r783:ef88c0a30f85
Thu, 05 Nov 2009 15:48:01
[Not Reviewed]
0 comments (0 inline)
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bin
bin
| 1 |
SET(COIN_ROOT_DIR "" CACHE PATH "COIN root directory") |
|
| 2 |
|
|
| 3 |
FIND_PATH(COIN_INCLUDE_DIR coin/CoinUtilsConfig.h |
|
| 4 |
HINTS ${COIN_ROOT_DIR}/include
|
|
| 5 |
) |
|
| 6 |
FIND_LIBRARY(COIN_CBC_LIBRARY |
|
| 7 |
NAMES Cbc libCbc |
|
| 8 |
HINTS ${COIN_ROOT_DIR}/lib
|
|
| 9 |
) |
|
| 10 |
FIND_LIBRARY(COIN_CBC_SOLVER_LIBRARY |
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| 11 |
NAMES CbcSolver libCbcSolver |
|
| 12 |
HINTS ${COIN_ROOT_DIR}/lib
|
|
| 13 |
) |
|
| 14 |
FIND_LIBRARY(COIN_CGL_LIBRARY |
|
| 15 |
NAMES Cgl libCgl |
|
| 16 |
HINTS ${COIN_ROOT_DIR}/lib
|
|
| 17 |
) |
|
| 18 |
FIND_LIBRARY(COIN_CLP_LIBRARY |
|
| 19 |
NAMES Clp libClp |
|
| 20 |
HINTS ${COIN_ROOT_DIR}/lib
|
|
| 21 |
) |
|
| 22 |
FIND_LIBRARY(COIN_COIN_UTILS_LIBRARY |
|
| 23 |
NAMES CoinUtils libCoinUtils |
|
| 24 |
HINTS ${COIN_ROOT_DIR}/lib
|
|
| 25 |
) |
|
| 26 |
FIND_LIBRARY(COIN_OSI_LIBRARY |
|
| 27 |
NAMES Osi libOsi |
|
| 28 |
HINTS ${COIN_ROOT_DIR}/lib
|
|
| 29 |
) |
|
| 30 |
FIND_LIBRARY(COIN_OSI_CBC_LIBRARY |
|
| 31 |
NAMES OsiCbc libOsiCbc |
|
| 32 |
HINTS ${COIN_ROOT_DIR}/lib
|
|
| 33 |
) |
|
| 34 |
FIND_LIBRARY(COIN_OSI_CLP_LIBRARY |
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| 35 |
NAMES OsiClp libOsiClp |
|
| 36 |
HINTS ${COIN_ROOT_DIR}/lib
|
|
| 37 |
) |
|
| 38 |
FIND_LIBRARY(COIN_OSI_VOL_LIBRARY |
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| 39 |
NAMES OsiVol libOsiVol |
|
| 40 |
HINTS ${COIN_ROOT_DIR}/lib
|
|
| 41 |
) |
|
| 42 |
FIND_LIBRARY(COIN_VOL_LIBRARY |
|
| 43 |
NAMES Vol libVol |
|
| 44 |
HINTS ${COIN_ROOT_DIR}/lib
|
|
| 45 |
) |
|
| 46 |
|
|
| 47 |
INCLUDE(FindPackageHandleStandardArgs) |
|
| 48 |
FIND_PACKAGE_HANDLE_STANDARD_ARGS(COIN DEFAULT_MSG |
|
| 49 |
COIN_INCLUDE_DIR |
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| 50 |
COIN_CBC_LIBRARY |
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| 51 |
COIN_CBC_SOLVER_LIBRARY |
|
| 52 |
COIN_CGL_LIBRARY |
|
| 53 |
COIN_CLP_LIBRARY |
|
| 54 |
COIN_COIN_UTILS_LIBRARY |
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| 55 |
COIN_OSI_LIBRARY |
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| 56 |
COIN_OSI_CBC_LIBRARY |
|
| 57 |
COIN_OSI_CLP_LIBRARY |
|
| 58 |
COIN_OSI_VOL_LIBRARY |
|
| 59 |
COIN_VOL_LIBRARY |
|
| 60 |
) |
|
| 61 |
|
|
| 62 |
IF(COIN_FOUND) |
|
| 63 |
SET(COIN_INCLUDE_DIRS ${COIN_INCLUDE_DIR})
|
|
| 64 |
SET(COIN_LIBRARIES "${COIN_CBC_LIBRARY};${COIN_CBC_SOLVER_LIBRARY};${COIN_CGL_LIBRARY};${COIN_CLP_LIBRARY};${COIN_COIN_UTILS_LIBRARY};${COIN_OSI_LIBRARY};${COIN_OSI_CBC_LIBRARY};${COIN_OSI_CLP_LIBRARY};${COIN_OSI_VOL_LIBRARY};${COIN_VOL_LIBRARY}")
|
|
| 65 |
SET(COIN_CLP_LIBRARIES "${COIN_CLP_LIBRARY};${COIN_COIN_UTILS_LIBRARY}")
|
|
| 66 |
SET(COIN_CBC_LIBRARIES ${COIN_LIBRARIES})
|
|
| 67 |
ENDIF(COIN_FOUND) |
|
| 68 |
|
|
| 69 |
MARK_AS_ADVANCED( |
|
| 70 |
COIN_INCLUDE_DIR |
|
| 71 |
COIN_CBC_LIBRARY |
|
| 72 |
COIN_CBC_SOLVER_LIBRARY |
|
| 73 |
COIN_CGL_LIBRARY |
|
| 74 |
COIN_CLP_LIBRARY |
|
| 75 |
COIN_COIN_UTILS_LIBRARY |
|
| 76 |
COIN_OSI_LIBRARY |
|
| 77 |
COIN_OSI_CBC_LIBRARY |
|
| 78 |
COIN_OSI_CLP_LIBRARY |
|
| 79 |
COIN_OSI_VOL_LIBRARY |
|
| 80 |
COIN_VOL_LIBRARY |
|
| 81 |
) |
|
| 82 |
|
|
| 83 |
IF(COIN_FOUND) |
|
| 84 |
SET(LEMON_HAVE_LP TRUE) |
|
| 85 |
SET(LEMON_HAVE_MIP TRUE) |
|
| 86 |
SET(LEMON_HAVE_CLP TRUE) |
|
| 87 |
SET(LEMON_HAVE_CBC TRUE) |
|
| 88 |
ENDIF(COIN_FOUND) |
| 1 |
SET(CPLEX_ROOT_DIR "" CACHE PATH "CPLEX root directory") |
|
| 2 |
|
|
| 3 |
FIND_PATH(CPLEX_INCLUDE_DIR |
|
| 4 |
ilcplex/cplex.h |
|
| 5 |
PATHS "C:/ILOG/CPLEX91/include" |
|
| 6 |
PATHS "/opt/ilog/cplex91/include" |
|
| 7 |
HINTS ${CPLEX_ROOT_DIR}/include
|
|
| 8 |
) |
|
| 9 |
FIND_LIBRARY(CPLEX_LIBRARY |
|
| 10 |
cplex91 |
|
| 11 |
PATHS "C:/ILOG/CPLEX91/lib/msvc7/stat_mda" |
|
| 12 |
PATHS "/opt/ilog/cplex91/bin" |
|
| 13 |
HINTS ${CPLEX_ROOT_DIR}/bin
|
|
| 14 |
) |
|
| 15 |
|
|
| 16 |
INCLUDE(FindPackageHandleStandardArgs) |
|
| 17 |
FIND_PACKAGE_HANDLE_STANDARD_ARGS(CPLEX DEFAULT_MSG CPLEX_LIBRARY CPLEX_INCLUDE_DIR) |
|
| 18 |
|
|
| 19 |
FIND_PATH(CPLEX_BIN_DIR |
|
| 20 |
cplex91.dll |
|
| 21 |
PATHS "C:/ILOG/CPLEX91/bin/x86_win32" |
|
| 22 |
) |
|
| 23 |
|
|
| 24 |
IF(CPLEX_FOUND) |
|
| 25 |
SET(CPLEX_INCLUDE_DIRS ${CPLEX_INCLUDE_DIR})
|
|
| 26 |
SET(CPLEX_LIBRARIES ${CPLEX_LIBRARY})
|
|
| 27 |
IF(CMAKE_SYSTEM_NAME STREQUAL "Linux") |
|
| 28 |
SET(CPLEX_LIBRARIES "${CPLEX_LIBRARIES};m;pthread")
|
|
| 29 |
ENDIF(CMAKE_SYSTEM_NAME STREQUAL "Linux") |
|
| 30 |
ENDIF(CPLEX_FOUND) |
|
| 31 |
|
|
| 32 |
MARK_AS_ADVANCED(CPLEX_LIBRARY CPLEX_INCLUDE_DIR CPLEX_BIN_DIR) |
|
| 33 |
|
|
| 34 |
IF(CPLEX_FOUND) |
|
| 35 |
SET(LEMON_HAVE_LP TRUE) |
|
| 36 |
SET(LEMON_HAVE_MIP TRUE) |
|
| 37 |
SET(LEMON_HAVE_CPLEX TRUE) |
|
| 38 |
ENDIF(CPLEX_FOUND) |
| 1 |
SET(GLPK_ROOT_DIR "" CACHE PATH "GLPK root directory") |
|
| 2 |
|
|
| 3 |
SET(GLPK_REGKEY "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Glpk;InstallPath]") |
|
| 4 |
GET_FILENAME_COMPONENT(GLPK_ROOT_PATH ${GLPK_REGKEY} ABSOLUTE)
|
|
| 5 |
|
|
| 6 |
FIND_PATH(GLPK_INCLUDE_DIR |
|
| 7 |
glpk.h |
|
| 8 |
PATHS ${GLPK_REGKEY}/include
|
|
| 9 |
HINTS ${GLPK_ROOT_DIR}/include
|
|
| 10 |
) |
|
| 11 |
FIND_LIBRARY(GLPK_LIBRARY |
|
| 12 |
glpk |
|
| 13 |
PATHS ${GLPK_REGKEY}/lib
|
|
| 14 |
HINTS ${GLPK_ROOT_DIR}/lib
|
|
| 15 |
) |
|
| 16 |
|
|
| 17 |
IF(GLPK_INCLUDE_DIR AND GLPK_LIBRARY) |
|
| 18 |
FILE(READ ${GLPK_INCLUDE_DIR}/glpk.h GLPK_GLPK_H)
|
|
| 19 |
|
|
| 20 |
STRING(REGEX MATCH "define[ ]+GLP_MAJOR_VERSION[ ]+[0-9]+" GLPK_MAJOR_VERSION_LINE "${GLPK_GLPK_H}")
|
|
| 21 |
STRING(REGEX REPLACE "define[ ]+GLP_MAJOR_VERSION[ ]+([0-9]+)" "\\1" GLPK_VERSION_MAJOR "${GLPK_MAJOR_VERSION_LINE}")
|
|
| 22 |
|
|
| 23 |
STRING(REGEX MATCH "define[ ]+GLP_MINOR_VERSION[ ]+[0-9]+" GLPK_MINOR_VERSION_LINE "${GLPK_GLPK_H}")
|
|
| 24 |
STRING(REGEX REPLACE "define[ ]+GLP_MINOR_VERSION[ ]+([0-9]+)" "\\1" GLPK_VERSION_MINOR "${GLPK_MINOR_VERSION_LINE}")
|
|
| 25 |
|
|
| 26 |
SET(GLPK_VERSION_STRING "${GLPK_VERSION_MAJOR}.${GLPK_VERSION_MINOR}")
|
|
| 27 |
|
|
| 28 |
IF(GLPK_FIND_VERSION) |
|
| 29 |
IF(GLPK_FIND_VERSION_COUNT GREATER 2) |
|
| 30 |
MESSAGE(SEND_ERROR "unexpected version string") |
|
| 31 |
ENDIF(GLPK_FIND_VERSION_COUNT GREATER 2) |
|
| 32 |
|
|
| 33 |
MATH(EXPR GLPK_REQUESTED_VERSION "${GLPK_FIND_VERSION_MAJOR}*100 + ${GLPK_FIND_VERSION_MINOR}")
|
|
| 34 |
MATH(EXPR GLPK_FOUND_VERSION "${GLPK_VERSION_MAJOR}*100 + ${GLPK_VERSION_MINOR}")
|
|
| 35 |
|
|
| 36 |
IF(GLPK_FOUND_VERSION LESS GLPK_REQUESTED_VERSION) |
|
| 37 |
SET(GLPK_PROPER_VERSION_FOUND FALSE) |
|
| 38 |
ELSE(GLPK_FOUND_VERSION LESS GLPK_REQUESTED_VERSION) |
|
| 39 |
SET(GLPK_PROPER_VERSION_FOUND TRUE) |
|
| 40 |
ENDIF(GLPK_FOUND_VERSION LESS GLPK_REQUESTED_VERSION) |
|
| 41 |
ELSE(GLPK_FIND_VERSION) |
|
| 42 |
SET(GLPK_PROPER_VERSION_FOUND TRUE) |
|
| 43 |
ENDIF(GLPK_FIND_VERSION) |
|
| 44 |
ENDIF(GLPK_INCLUDE_DIR AND GLPK_LIBRARY) |
|
| 45 |
|
|
| 46 |
INCLUDE(FindPackageHandleStandardArgs) |
|
| 47 |
FIND_PACKAGE_HANDLE_STANDARD_ARGS(GLPK DEFAULT_MSG GLPK_LIBRARY GLPK_INCLUDE_DIR GLPK_PROPER_VERSION_FOUND) |
|
| 48 |
|
|
| 49 |
IF(GLPK_FOUND) |
|
| 50 |
SET(GLPK_INCLUDE_DIRS ${GLPK_INCLUDE_DIR})
|
|
| 51 |
SET(GLPK_LIBRARIES ${GLPK_LIBRARY})
|
|
| 52 |
SET(GLPK_BIN_DIR ${GLPK_ROOT_PATH}/bin)
|
|
| 53 |
ENDIF(GLPK_FOUND) |
|
| 54 |
|
|
| 55 |
MARK_AS_ADVANCED(GLPK_LIBRARY GLPK_INCLUDE_DIR GLPK_BIN_DIR) |
|
| 56 |
|
|
| 57 |
IF(GLPK_FOUND) |
|
| 58 |
SET(LEMON_HAVE_LP TRUE) |
|
| 59 |
SET(LEMON_HAVE_MIP TRUE) |
|
| 60 |
SET(LEMON_HAVE_GLPK TRUE) |
|
| 61 |
ENDIF(GLPK_FOUND) |
| 1 |
SET(LEMON_INCLUDE_DIR "@CMAKE_INSTALL_PREFIX@/include" CACHE PATH "LEMON include directory") |
|
| 2 |
SET(LEMON_INCLUDE_DIRS "${LEMON_INCLUDE_DIR}")
|
|
| 3 |
|
|
| 4 |
IF(UNIX) |
|
| 5 |
SET(LEMON_LIB_NAME "libemon.a") |
|
| 6 |
ELSEIF(WIN32) |
|
| 7 |
SET(LEMON_LIB_NAME "lemon.lib") |
|
| 8 |
ENDIF(UNIX) |
|
| 9 |
|
|
| 10 |
SET(LEMON_LIBRARY "@CMAKE_INSTALL_PREFIX@/lib/${LEMON_LIB_NAME}" CACHE FILEPATH "LEMON library")
|
|
| 11 |
SET(LEMON_LIBRARIES "${LEMON_LIBRARY}")
|
|
| 12 |
|
|
| 13 |
MARK_AS_ADVANCED(LEMON_LIBRARY LEMON_INCLUDE_DIR) |
| 1 |
SET(LEMON_VERSION "@PACKAGE_VERSION@" CACHE STRING "LEMON version string.") |
| 1 |
%!PS-Adobe-3.0 EPSF-3.0 |
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| 2 |
%%BoundingBox: 15 18 829 570 |
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| 3 |
%%HiResBoundingBox: 15.1913 18.4493 828.078 569.438 |
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| 4 |
%%Creator: Karbon14 EPS Exportfilter 0.5 |
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| 5 |
%%CreationDate: (04/15/06 15:20:26) |
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| 6 |
%%For: (Balazs Dezso) () |
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| 7 |
%%Title: () |
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| 8 |
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| 9 |
/N {newpath} def
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| 10 |
/C {closepath} def
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| 11 |
/m {moveto} def
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| 12 |
/c {curveto} def
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| 13 |
/l {lineto} def
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| 14 |
/s {stroke} def
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/f {fill} def
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/w {setlinewidth} def
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/d {setdash} def
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/r {setrgbcolor} def
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| 19 |
/S {gsave} def
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| 20 |
/R {grestore} def
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| 21 |
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| 22 |
N |
|
| 23 |
251.402 32.047 m |
|
| 24 |
532.945 293.946 814.484 555.844 814.484 555.844 c |
|
| 25 |
[] 0 d 1 0 0 r 3.92814 w s |
|
| 26 |
|
|
| 27 |
N |
|
| 28 |
749.012 32.047 m |
|
| 29 |
742.465 293.946 735.918 555.844 735.918 555.844 c |
|
| 30 |
[] 0 d 0 0 0 r 1.96407 w s |
|
| 31 |
|
|
| 32 |
N |
|
| 33 |
539.492 32.047 m |
|
| 34 |
637.703 293.946 735.918 555.844 735.918 555.844 c |
|
| 35 |
[] 0 d 0 0 0 r 1.96407 w s |
|
| 36 |
|
|
| 37 |
N |
|
| 38 |
172.832 32.047 m |
|
| 39 |
454.375 293.946 735.918 555.844 735.918 555.844 c |
|
| 40 |
[] 0 d 0 0 0 r 1.96407 w s |
|
| 41 |
|
|
| 42 |
N |
|
| 43 |
107.355 32.047 m |
|
| 44 |
421.637 293.946 735.918 555.844 735.918 555.844 c |
|
| 45 |
[] 0 d 1 0 0 r 3.92814 w s |
|
| 46 |
|
|
| 47 |
N |
|
| 48 |
644.25 555.844 m |
|
| 49 |
696.633 293.946 749.012 32.047 749.012 32.047 c |
|
| 50 |
[] 0 d 0 0 0 r 1.96407 w s |
|
| 51 |
|
|
| 52 |
N |
|
| 53 |
474.016 555.844 m |
|
| 54 |
611.516 293.946 749.012 32.047 749.012 32.047 c |
|
| 55 |
[] 0 d 1 0 0 r 3.92814 w s |
|
| 56 |
|
|
| 57 |
N |
|
| 58 |
683.535 32.047 m |
|
| 59 |
663.894 293.946 644.25 555.844 644.25 555.844 c |
|
| 60 |
[] 0 d 0 0 0 r 1.96407 w s |
|
| 61 |
|
|
| 62 |
N |
|
| 63 |
120.453 555.844 m |
|
| 64 |
401.992 293.946 683.535 32.047 683.535 32.047 c |
|
| 65 |
[] 0 d 0 0 0 r 1.96407 w s |
|
| 66 |
|
|
| 67 |
N |
|
| 68 |
28.7853 555.844 m |
|
| 69 |
356.16 293.946 683.535 32.047 683.535 32.047 c |
|
| 70 |
[] 0 d 1 0 0 r 3.92814 w s |
|
| 71 |
|
|
| 72 |
N |
|
| 73 |
539.492 32.047 m |
|
| 74 |
546.039 293.946 552.586 555.844 552.586 555.844 c |
|
| 75 |
[] 0 d 1 0 0 r 3.92814 w s |
|
| 76 |
|
|
| 77 |
N |
|
| 78 |
316.875 32.047 m |
|
| 79 |
349.613 293.946 382.351 555.844 382.351 555.844 c |
|
| 80 |
[] 0 d 1 0 0 r 3.92814 w s |
|
| 81 |
|
|
| 82 |
N |
|
| 83 |
107.355 32.047 m |
|
| 84 |
244.855 293.946 382.351 555.844 382.351 555.844 c |
|
| 85 |
[] 0 d 0 0 0 r 1.96407 w s |
|
| 86 |
|
|
| 87 |
N |
|
| 88 |
290.687 555.844 m |
|
| 89 |
375.805 293.946 460.922 32.047 460.922 32.047 c |
|
| 90 |
[] 0 d 1 0 0 r 3.92814 w s |
|
| 91 |
|
|
| 92 |
N |
|
| 93 |
120.453 555.844 m |
|
| 94 |
290.687 293.946 460.922 32.047 460.922 32.047 c |
|
| 95 |
[] 0 d 0 0 0 r 1.96407 w s |
|
| 96 |
|
|
| 97 |
N |
|
| 98 |
172.832 32.047 m |
|
| 99 |
146.64 293.946 120.453 555.844 120.453 555.844 c |
|
| 100 |
[] 0 d 1 0 0 r 3.92814 w s |
|
| 101 |
|
|
| 102 |
N |
|
| 103 |
15.6913 555.844 m |
|
| 104 |
15.6913 555.844 l |
|
| 105 |
15.6913 548.614 21.5553 542.75 28.7853 542.75 c |
|
| 106 |
36.0163 542.75 41.8833 548.614 41.8833 555.844 c |
|
| 107 |
41.8833 563.075 36.0163 568.938 28.7853 568.938 c |
|
| 108 |
21.5553 568.938 15.6913 563.075 15.6913 555.844 c |
|
| 109 |
15.6913 555.844 l |
|
| 110 |
C |
|
| 111 |
S 0 0 0 r f R |
|
| 112 |
|
|
| 113 |
N |
|
| 114 |
16.8833 555.844 m |
|
| 115 |
16.8833 555.844 l |
|
| 116 |
16.8833 549.27 22.2113 543.942 28.7853 543.942 c |
|
| 117 |
35.3593 543.942 40.6913 549.27 40.6913 555.844 c |
|
| 118 |
40.6913 562.418 35.3593 567.747 28.7853 567.747 c |
|
| 119 |
22.2113 567.747 16.8833 562.418 16.8833 555.844 c |
|
| 120 |
16.8833 555.844 l |
|
| 121 |
C |
|
| 122 |
S 1 0.5 1 r f R |
|
| 123 |
|
|
| 124 |
N |
|
| 125 |
107.355 555.844 m |
|
| 126 |
107.355 555.844 l |
|
| 127 |
107.355 548.614 113.223 542.75 120.453 542.75 c |
|
| 128 |
127.683 542.75 133.547 548.614 133.547 555.844 c |
|
| 129 |
133.547 563.075 127.683 568.938 120.453 568.938 c |
|
| 130 |
113.223 568.938 107.355 563.075 107.355 555.844 c |
|
| 131 |
107.355 555.844 l |
|
| 132 |
C |
|
| 133 |
S 0 0 0 r f R |
|
| 134 |
|
|
| 135 |
N |
|
| 136 |
108.547 555.844 m |
|
| 137 |
108.547 555.844 l |
|
| 138 |
108.547 549.27 113.879 543.942 120.453 543.942 c |
|
| 139 |
127.027 543.942 132.355 549.27 132.355 555.844 c |
|
| 140 |
132.355 562.418 127.027 567.747 120.453 567.747 c |
|
| 141 |
113.879 567.747 108.547 562.418 108.547 555.844 c |
|
| 142 |
108.547 555.844 l |
|
| 143 |
C |
|
| 144 |
S 1 0 1 r f R |
|
| 145 |
|
|
| 146 |
N |
|
| 147 |
199.019 555.844 m |
|
| 148 |
199.019 555.844 l |
|
| 149 |
199.019 548.614 204.887 542.75 212.117 542.75 c |
|
| 150 |
219.348 542.75 225.211 548.614 225.211 555.844 c |
|
| 151 |
225.211 563.075 219.348 568.938 212.117 568.938 c |
|
| 152 |
204.887 568.938 199.019 563.075 199.019 555.844 c |
|
| 153 |
199.019 555.844 l |
|
| 154 |
C |
|
| 155 |
S 0 0 0 r f R |
|
| 156 |
|
|
| 157 |
N |
|
| 158 |
200.211 555.844 m |
|
| 159 |
200.211 555.844 l |
|
| 160 |
200.211 549.27 205.543 543.942 212.117 543.942 c |
|
| 161 |
218.691 543.942 224.019 549.27 224.019 555.844 c |
|
| 162 |
224.019 562.418 218.691 567.747 212.117 567.747 c |
|
| 163 |
205.543 567.747 200.211 562.418 200.211 555.844 c |
|
| 164 |
200.211 555.844 l |
|
| 165 |
C |
|
| 166 |
S 1 0.5 1 r f R |
|
| 167 |
|
|
| 168 |
N |
|
| 169 |
277.59 555.844 m |
|
| 170 |
277.59 555.844 l |
|
| 171 |
277.59 548.614 283.457 542.75 290.687 542.75 c |
|
| 172 |
297.918 542.75 303.781 548.614 303.781 555.844 c |
|
| 173 |
303.781 563.075 297.918 568.938 290.687 568.938 c |
|
| 174 |
283.457 568.938 277.59 563.075 277.59 555.844 c |
|
| 175 |
277.59 555.844 l |
|
| 176 |
C |
|
| 177 |
S 0 0 0 r f R |
|
| 178 |
|
|
| 179 |
N |
|
| 180 |
278.781 555.844 m |
|
| 181 |
278.781 555.844 l |
|
| 182 |
278.781 549.27 284.113 543.942 290.687 543.942 c |
|
| 183 |
297.262 543.942 302.59 549.27 302.59 555.844 c |
|
| 184 |
302.59 562.418 297.262 567.747 290.687 567.747 c |
|
| 185 |
284.113 567.747 278.781 562.418 278.781 555.844 c |
|
| 186 |
278.781 555.844 l |
|
| 187 |
C |
|
| 188 |
S 1 0 1 r f R |
|
| 189 |
|
|
| 190 |
N |
|
| 191 |
369.258 555.844 m |
|
| 192 |
369.258 555.844 l |
|
| 193 |
369.258 548.614 375.121 542.75 382.351 542.75 c |
|
| 194 |
389.582 542.75 395.445 548.614 395.445 555.844 c |
|
| 195 |
395.445 563.075 389.582 568.938 382.351 568.938 c |
|
| 196 |
375.121 568.938 369.258 563.075 369.258 555.844 c |
|
| 197 |
369.258 555.844 l |
|
| 198 |
C |
|
| 199 |
S 0 0 0 r f R |
|
| 200 |
|
|
| 201 |
N |
|
| 202 |
370.445 555.844 m |
|
| 203 |
370.445 555.844 l |
|
| 204 |
370.445 549.27 375.777 543.942 382.351 543.942 c |
|
| 205 |
388.926 543.942 394.258 549.27 394.258 555.844 c |
|
| 206 |
394.258 562.418 388.926 567.747 382.351 567.747 c |
|
| 207 |
375.777 567.747 370.445 562.418 370.445 555.844 c |
|
| 208 |
370.445 555.844 l |
|
| 209 |
C |
|
| 210 |
S 1 0 1 r f R |
|
| 211 |
|
|
| 212 |
N |
|
| 213 |
460.922 555.844 m |
|
| 214 |
460.922 555.844 l |
|
| 215 |
460.922 548.614 466.785 542.75 474.016 542.75 c |
|
| 216 |
481.246 542.75 487.109 548.614 487.109 555.844 c |
|
| 217 |
487.109 563.075 481.246 568.938 474.016 568.938 c |
|
| 218 |
466.785 568.938 460.922 563.075 460.922 555.844 c |
|
| 219 |
460.922 555.844 l |
|
| 220 |
C |
|
| 221 |
S 0 0 0 r f R |
|
| 222 |
|
|
| 223 |
N |
|
| 224 |
462.113 555.844 m |
|
| 225 |
462.113 555.844 l |
|
| 226 |
462.113 549.27 467.441 543.942 474.016 543.942 c |
|
| 227 |
480.59 543.942 485.922 549.27 485.922 555.844 c |
|
| 228 |
485.922 562.418 480.59 567.747 474.016 567.747 c |
|
| 229 |
467.441 567.747 462.113 562.418 462.113 555.844 c |
|
| 230 |
462.113 555.844 l |
|
| 231 |
C |
|
| 232 |
S 1 0.5 1 r f R |
|
| 233 |
|
|
| 234 |
N |
|
| 235 |
539.492 555.844 m |
|
| 236 |
539.492 555.844 l |
|
| 237 |
539.492 548.614 545.355 542.75 552.586 542.75 c |
|
| 238 |
559.816 542.75 565.68 548.614 565.68 555.844 c |
|
| 239 |
565.68 563.075 559.816 568.938 552.586 568.938 c |
|
| 240 |
545.355 568.938 539.492 563.075 539.492 555.844 c |
|
| 241 |
539.492 555.844 l |
|
| 242 |
C |
|
| 243 |
S 0 0 0 r f R |
|
| 244 |
|
|
| 245 |
N |
|
| 246 |
540.683 555.844 m |
|
| 247 |
540.683 555.844 l |
|
| 248 |
540.683 549.27 546.012 543.942 552.586 543.942 c |
|
| 249 |
559.16 543.942 564.492 549.27 564.492 555.844 c |
|
| 250 |
564.492 562.418 559.16 567.747 552.586 567.747 c |
|
| 251 |
546.012 567.747 540.683 562.418 540.683 555.844 c |
|
| 252 |
540.683 555.844 l |
|
| 253 |
C |
|
| 254 |
S 1 0 1 r f R |
|
| 255 |
|
|
| 256 |
N |
|
| 257 |
631.156 555.844 m |
|
| 258 |
631.156 555.844 l |
|
| 259 |
631.156 548.614 637.019 542.75 644.25 542.75 c |
|
| 260 |
651.48 542.75 657.348 548.614 657.348 555.844 c |
|
| 261 |
657.348 563.075 651.48 568.938 644.25 568.938 c |
|
| 262 |
637.019 568.938 631.156 563.075 631.156 555.844 c |
|
| 263 |
631.156 555.844 l |
|
| 264 |
C |
|
| 265 |
S 0 0 0 r f R |
|
| 266 |
|
|
| 267 |
N |
|
| 268 |
632.348 555.844 m |
|
| 269 |
632.348 555.844 l |
|
| 270 |
632.348 549.27 637.676 543.942 644.25 543.942 c |
|
| 271 |
650.824 543.942 656.156 549.27 656.156 555.844 c |
|
| 272 |
656.156 562.418 650.824 567.747 644.25 567.747 c |
|
| 273 |
637.676 567.747 632.348 562.418 632.348 555.844 c |
|
| 274 |
632.348 555.844 l |
|
| 275 |
C |
|
| 276 |
S 1 0.5 1 r f R |
|
| 277 |
|
|
| 278 |
N |
|
| 279 |
722.82 555.844 m |
|
| 280 |
722.82 555.844 l |
|
| 281 |
722.82 548.614 728.687 542.75 735.918 542.75 c |
|
| 282 |
743.149 542.75 749.012 548.614 749.012 555.844 c |
|
| 283 |
749.012 563.075 743.149 568.938 735.918 568.938 c |
|
| 284 |
728.687 568.938 722.82 563.075 722.82 555.844 c |
|
| 285 |
722.82 555.844 l |
|
| 286 |
C |
|
| 287 |
S 0 0 0 r f R |
|
| 288 |
|
|
| 289 |
N |
|
| 290 |
724.012 555.844 m |
|
| 291 |
724.012 555.844 l |
|
| 292 |
724.012 549.27 729.344 543.942 735.918 543.942 c |
|
| 293 |
742.492 543.942 747.82 549.27 747.82 555.844 c |
|
| 294 |
747.82 562.418 742.492 567.747 735.918 567.747 c |
|
| 295 |
729.344 567.747 724.012 562.418 724.012 555.844 c |
|
| 296 |
724.012 555.844 l |
|
| 297 |
C |
|
| 298 |
S 1 0 1 r f R |
|
| 299 |
|
|
| 300 |
N |
|
| 301 |
801.391 555.844 m |
|
| 302 |
801.391 555.844 l |
|
| 303 |
801.391 548.614 807.254 542.75 814.484 542.75 c |
|
| 304 |
821.715 542.75 827.578 548.614 827.578 555.844 c |
|
| 305 |
827.578 563.075 821.715 568.938 814.484 568.938 c |
|
| 306 |
807.254 568.938 801.391 563.075 801.391 555.844 c |
|
| 307 |
801.391 555.844 l |
|
| 308 |
C |
|
| 309 |
S 0 0 0 r f R |
|
| 310 |
|
|
| 311 |
N |
|
| 312 |
802.582 555.844 m |
|
| 313 |
802.582 555.844 l |
|
| 314 |
802.582 549.27 807.91 543.942 814.484 543.942 c |
|
| 315 |
821.059 543.942 826.387 549.27 826.387 555.844 c |
|
| 316 |
826.387 562.418 821.059 567.747 814.484 567.747 c |
|
| 317 |
807.91 567.747 802.582 562.418 802.582 555.844 c |
|
| 318 |
802.582 555.844 l |
|
| 319 |
C |
|
| 320 |
S 1 0 1 r f R |
|
| 321 |
|
|
| 322 |
N |
|
| 323 |
15.6913 32.047 m |
|
| 324 |
15.6913 32.047 l |
|
| 325 |
15.6913 24.8165 21.5553 18.9493 28.7853 18.9493 c |
|
| 326 |
36.0163 18.9493 41.8833 24.8165 41.8833 32.047 c |
|
| 327 |
41.8833 39.2775 36.0163 45.1407 28.7853 45.1407 c |
|
| 328 |
21.5553 45.1407 15.6913 39.2775 15.6913 32.047 c |
|
| 329 |
15.6913 32.047 l |
|
| 330 |
C |
|
| 331 |
S 0 0 0 r f R |
|
| 332 |
|
|
| 333 |
N |
|
| 334 |
16.8833 32.047 m |
|
| 335 |
16.8833 32.047 l |
|
| 336 |
16.8833 25.4728 22.2113 20.1407 28.7853 20.1407 c |
|
| 337 |
35.3593 20.1407 40.6913 25.4728 40.6913 32.047 c |
|
| 338 |
40.6913 38.6212 35.3593 43.9493 28.7853 43.9493 c |
|
| 339 |
22.2113 43.9493 16.8833 38.6212 16.8833 32.047 c |
|
| 340 |
16.8833 32.047 l |
|
| 341 |
C |
|
| 342 |
S 0.5 0.5 1 r f R |
|
| 343 |
|
|
| 344 |
N |
|
| 345 |
94.2623 32.047 m |
|
| 346 |
94.2623 32.047 l |
|
| 347 |
94.2623 24.8165 100.125 18.9493 107.355 18.9493 c |
|
| 348 |
114.586 18.9493 120.453 24.8165 120.453 32.047 c |
|
| 349 |
120.453 39.2775 114.586 45.1407 107.355 45.1407 c |
|
| 350 |
100.125 45.1407 94.2623 39.2775 94.2623 32.047 c |
|
| 351 |
94.2623 32.047 l |
|
| 352 |
C |
|
| 353 |
S 0 0 0 r f R |
|
| 354 |
|
|
| 355 |
N |
|
| 356 |
95.4533 32.047 m |
|
| 357 |
95.4533 32.047 l |
|
| 358 |
95.4533 25.4728 100.781 20.1407 107.355 20.1407 c |
|
| 359 |
113.93 20.1407 119.262 25.4728 119.262 32.047 c |
|
| 360 |
119.262 38.6212 113.93 43.9493 107.355 43.9493 c |
|
| 361 |
100.781 43.9493 95.4533 38.6212 95.4533 32.047 c |
|
| 362 |
95.4533 32.047 l |
|
| 363 |
C |
|
| 364 |
S 0.5 0.5 1 r f R |
|
| 365 |
|
|
| 366 |
N |
|
| 367 |
159.734 32.047 m |
|
| 368 |
159.734 32.047 l |
|
| 369 |
159.734 24.8165 165.601 18.9493 172.832 18.9493 c |
|
| 370 |
180.062 18.9493 185.926 24.8165 185.926 32.047 c |
|
| 371 |
185.926 39.2775 180.062 45.1407 172.832 45.1407 c |
|
| 372 |
165.601 45.1407 159.734 39.2775 159.734 32.047 c |
|
| 373 |
159.734 32.047 l |
|
| 374 |
C |
|
| 375 |
S 0 0 0 r f R |
|
| 376 |
|
|
| 377 |
N |
|
| 378 |
160.926 32.047 m |
|
| 379 |
160.926 32.047 l |
|
| 380 |
160.926 25.4728 166.258 20.1407 172.832 20.1407 c |
|
| 381 |
179.406 20.1407 184.734 25.4728 184.734 32.047 c |
|
| 382 |
184.734 38.6212 179.406 43.9493 172.832 43.9493 c |
|
| 383 |
166.258 43.9493 160.926 38.6212 160.926 32.047 c |
|
| 384 |
160.926 32.047 l |
|
| 385 |
C |
|
| 386 |
S 0.5 0.5 1 r f R |
|
| 387 |
|
|
| 388 |
N |
|
| 389 |
238.305 32.047 m |
|
| 390 |
238.305 32.047 l |
|
| 391 |
238.305 24.8165 244.172 18.9493 251.402 18.9493 c |
|
| 392 |
258.633 18.9493 264.496 24.8165 264.496 32.047 c |
|
| 393 |
264.496 39.2775 258.633 45.1407 251.402 45.1407 c |
|
| 394 |
244.172 45.1407 238.305 39.2775 238.305 32.047 c |
|
| 395 |
238.305 32.047 l |
|
| 396 |
C |
|
| 397 |
S 0 0 0 r f R |
|
| 398 |
|
|
| 399 |
N |
|
| 400 |
239.496 32.047 m |
|
| 401 |
239.496 32.047 l |
|
| 402 |
239.496 25.4728 244.828 20.1407 251.402 20.1407 c |
|
| 403 |
257.976 20.1407 263.305 25.4728 263.305 32.047 c |
|
| 404 |
263.305 38.6212 257.976 43.9493 251.402 43.9493 c |
|
| 405 |
244.828 43.9493 239.496 38.6212 239.496 32.047 c |
|
| 406 |
239.496 32.047 l |
|
| 407 |
C |
|
| 408 |
S 0.5 0.5 1 r f R |
|
| 409 |
|
|
| 410 |
N |
|
| 411 |
303.781 32.047 m |
|
| 412 |
303.781 32.047 l |
|
| 413 |
303.781 24.8165 309.644 18.9493 316.875 18.9493 c |
|
| 414 |
324.105 18.9493 329.973 24.8165 329.973 32.047 c |
|
| 415 |
329.973 39.2775 324.105 45.1407 316.875 45.1407 c |
|
| 416 |
309.644 45.1407 303.781 39.2775 303.781 32.047 c |
|
| 417 |
303.781 32.047 l |
|
| 418 |
C |
|
| 419 |
S 0 0 0 r f R |
|
| 420 |
|
|
| 421 |
N |
|
| 422 |
304.973 32.047 m |
|
| 423 |
304.973 32.047 l |
|
| 424 |
304.973 25.4728 310.301 20.1407 316.875 20.1407 c |
|
| 425 |
323.449 20.1407 328.781 25.4728 328.781 32.047 c |
|
| 426 |
328.781 38.6212 323.449 43.9493 316.875 43.9493 c |
|
| 427 |
310.301 43.9493 304.973 38.6212 304.973 32.047 c |
|
| 428 |
304.973 32.047 l |
|
| 429 |
C |
|
| 430 |
S 0.5 0.5 1 r f R |
|
| 431 |
|
|
| 432 |
N |
|
| 433 |
382.351 32.047 m |
|
| 434 |
382.351 32.047 l |
|
| 435 |
382.351 24.8165 388.215 18.9493 395.445 18.9493 c |
|
| 436 |
402.676 18.9493 408.543 24.8165 408.543 32.047 c |
|
| 437 |
408.543 39.2775 402.676 45.1407 395.445 45.1407 c |
|
| 438 |
388.215 45.1407 382.351 39.2775 382.351 32.047 c |
|
| 439 |
382.351 32.047 l |
|
| 440 |
C |
|
| 441 |
S 0 0 0 r f R |
|
| 442 |
|
|
| 443 |
N |
|
| 444 |
383.543 32.047 m |
|
| 445 |
383.543 32.047 l |
|
| 446 |
383.543 25.4728 388.871 20.1407 395.445 20.1407 c |
|
| 447 |
402.019 20.1407 407.351 25.4728 407.351 32.047 c |
|
| 448 |
407.351 38.6212 402.019 43.9493 395.445 43.9493 c |
|
| 449 |
388.871 43.9493 383.543 38.6212 383.543 32.047 c |
|
| 450 |
383.543 32.047 l |
|
| 451 |
C |
|
| 452 |
S 0.5 0.5 1 r f R |
|
| 453 |
|
|
| 454 |
N |
|
| 455 |
447.828 32.047 m |
|
| 456 |
447.828 32.047 l |
|
| 457 |
447.828 24.8165 453.691 18.9493 460.922 18.9493 c |
|
| 458 |
468.152 18.9493 474.016 24.8165 474.016 32.047 c |
|
| 459 |
474.016 39.2775 468.152 45.1407 460.922 45.1407 c |
|
| 460 |
453.691 45.1407 447.828 39.2775 447.828 32.047 c |
|
| 461 |
447.828 32.047 l |
|
| 462 |
C |
|
| 463 |
S 0 0 0 r f R |
|
| 464 |
|
|
| 465 |
N |
|
| 466 |
449.016 32.047 m |
|
| 467 |
449.016 32.047 l |
|
| 468 |
449.016 25.4728 454.348 20.1407 460.922 20.1407 c |
|
| 469 |
467.496 20.1407 472.824 25.4728 472.824 32.047 c |
|
| 470 |
472.824 38.6212 467.496 43.9493 460.922 43.9493 c |
|
| 471 |
454.348 43.9493 449.016 38.6212 449.016 32.047 c |
|
| 472 |
449.016 32.047 l |
|
| 473 |
C |
|
| 474 |
S 0.5 0.5 1 r f R |
|
| 475 |
|
|
| 476 |
N |
|
| 477 |
526.394 32.047 m |
|
| 478 |
526.394 32.047 l |
|
| 479 |
526.394 24.8165 532.262 18.9493 539.492 18.9493 c |
|
| 480 |
546.723 18.9493 552.586 24.8165 552.586 32.047 c |
|
| 481 |
552.586 39.2775 546.723 45.1407 539.492 45.1407 c |
|
| 482 |
532.262 45.1407 526.394 39.2775 526.394 32.047 c |
|
| 483 |
526.394 32.047 l |
|
| 484 |
C |
|
| 485 |
S 0 0 0 r f R |
|
| 486 |
|
|
| 487 |
N |
|
| 488 |
527.586 32.047 m |
|
| 489 |
527.586 32.047 l |
|
| 490 |
527.586 25.4728 532.918 20.1407 539.492 20.1407 c |
|
| 491 |
546.066 20.1407 551.394 25.4728 551.394 32.047 c |
|
| 492 |
551.394 38.6212 546.066 43.9493 539.492 43.9493 c |
|
| 493 |
532.918 43.9493 527.586 38.6212 527.586 32.047 c |
|
| 494 |
527.586 32.047 l |
|
| 495 |
C |
|
| 496 |
S 0.5 0.5 1 r f R |
|
| 497 |
|
|
| 498 |
N |
|
| 499 |
591.871 32.047 m |
|
| 500 |
591.871 32.047 l |
|
| 501 |
591.871 24.8165 597.734 18.9493 604.965 18.9493 c |
|
| 502 |
612.195 18.9493 618.062 24.8165 618.062 32.047 c |
|
| 503 |
618.062 39.2775 612.195 45.1407 604.965 45.1407 c |
|
| 504 |
597.734 45.1407 591.871 39.2775 591.871 32.047 c |
|
| 505 |
591.871 32.047 l |
|
| 506 |
C |
|
| 507 |
S 0 0 0 r f R |
|
| 508 |
|
|
| 509 |
N |
|
| 510 |
593.062 32.047 m |
|
| 511 |
593.062 32.047 l |
|
| 512 |
593.062 25.4728 598.39 20.1407 604.965 20.1407 c |
|
| 513 |
611.539 20.1407 616.871 25.4728 616.871 32.047 c |
|
| 514 |
616.871 38.6212 611.539 43.9493 604.965 43.9493 c |
|
| 515 |
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| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
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| 2 |
* |
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| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
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| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
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| 16 |
* |
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| 17 |
*/ |
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| 18 |
|
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| 19 |
namespace lemon {
|
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| 20 |
|
|
| 21 |
/** |
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| 22 |
\page min_cost_flow Minimum Cost Flow Problem |
|
| 23 |
|
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| 24 |
\section mcf_def Definition (GEQ form) |
|
| 25 |
|
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| 26 |
The \e minimum \e cost \e flow \e problem is to find a feasible flow of |
|
| 27 |
minimum total cost from a set of supply nodes to a set of demand nodes |
|
| 28 |
in a network with capacity constraints (lower and upper bounds) |
|
| 29 |
and arc costs \ref amo93networkflows. |
|
| 30 |
|
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| 31 |
Formally, let \f$G=(V,A)\f$ be a digraph, \f$lower: A\rightarrow\mathbf{R}\f$,
|
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| 32 |
\f$upper: A\rightarrow\mathbf{R}\cup\{+\infty\}\f$ denote the lower and
|
|
| 33 |
upper bounds for the flow values on the arcs, for which |
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| 34 |
\f$lower(uv) \leq upper(uv)\f$ must hold for all \f$uv\in A\f$, |
|
| 35 |
\f$cost: A\rightarrow\mathbf{R}\f$ denotes the cost per unit flow
|
|
| 36 |
on the arcs and \f$sup: V\rightarrow\mathbf{R}\f$ denotes the
|
|
| 37 |
signed supply values of the nodes. |
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| 38 |
If \f$sup(u)>0\f$, then \f$u\f$ is a supply node with \f$sup(u)\f$ |
|
| 39 |
supply, if \f$sup(u)<0\f$, then \f$u\f$ is a demand node with |
|
| 40 |
\f$-sup(u)\f$ demand. |
|
| 41 |
A minimum cost flow is an \f$f: A\rightarrow\mathbf{R}\f$ solution
|
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| 42 |
of the following optimization problem. |
|
| 43 |
|
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| 44 |
\f[ \min\sum_{uv\in A} f(uv) \cdot cost(uv) \f]
|
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| 45 |
\f[ \sum_{uv\in A} f(uv) - \sum_{vu\in A} f(vu) \geq
|
|
| 46 |
sup(u) \quad \forall u\in V \f] |
|
| 47 |
\f[ lower(uv) \leq f(uv) \leq upper(uv) \quad \forall uv\in A \f] |
|
| 48 |
|
|
| 49 |
The sum of the supply values, i.e. \f$\sum_{u\in V} sup(u)\f$ must be
|
|
| 50 |
zero or negative in order to have a feasible solution (since the sum |
|
| 51 |
of the expressions on the left-hand side of the inequalities is zero). |
|
| 52 |
It means that the total demand must be greater or equal to the total |
|
| 53 |
supply and all the supplies have to be carried out from the supply nodes, |
|
| 54 |
but there could be demands that are not satisfied. |
|
| 55 |
If \f$\sum_{u\in V} sup(u)\f$ is zero, then all the supply/demand
|
|
| 56 |
constraints have to be satisfied with equality, i.e. all demands |
|
| 57 |
have to be satisfied and all supplies have to be used. |
|
| 58 |
|
|
| 59 |
|
|
| 60 |
\section mcf_algs Algorithms |
|
| 61 |
|
|
| 62 |
LEMON contains several algorithms for solving this problem, for more |
|
| 63 |
information see \ref min_cost_flow_algs "Minimum Cost Flow Algorithms". |
|
| 64 |
|
|
| 65 |
A feasible solution for this problem can be found using \ref Circulation. |
|
| 66 |
|
|
| 67 |
|
|
| 68 |
\section mcf_dual Dual Solution |
|
| 69 |
|
|
| 70 |
The dual solution of the minimum cost flow problem is represented by |
|
| 71 |
node potentials \f$\pi: V\rightarrow\mathbf{R}\f$.
|
|
| 72 |
An \f$f: A\rightarrow\mathbf{R}\f$ primal feasible solution is optimal
|
|
| 73 |
if and only if for some \f$\pi: V\rightarrow\mathbf{R}\f$ node potentials
|
|
| 74 |
the following \e complementary \e slackness optimality conditions hold. |
|
| 75 |
|
|
| 76 |
- For all \f$uv\in A\f$ arcs: |
|
| 77 |
- if \f$cost^\pi(uv)>0\f$, then \f$f(uv)=lower(uv)\f$; |
|
| 78 |
- if \f$lower(uv)<f(uv)<upper(uv)\f$, then \f$cost^\pi(uv)=0\f$; |
|
| 79 |
- if \f$cost^\pi(uv)<0\f$, then \f$f(uv)=upper(uv)\f$. |
|
| 80 |
- For all \f$u\in V\f$ nodes: |
|
| 81 |
- \f$\pi(u)<=0\f$; |
|
| 82 |
- if \f$\sum_{uv\in A} f(uv) - \sum_{vu\in A} f(vu) \neq sup(u)\f$,
|
|
| 83 |
then \f$\pi(u)=0\f$. |
|
| 84 |
|
|
| 85 |
Here \f$cost^\pi(uv)\f$ denotes the \e reduced \e cost of the arc |
|
| 86 |
\f$uv\in A\f$ with respect to the potential function \f$\pi\f$, i.e. |
|
| 87 |
\f[ cost^\pi(uv) = cost(uv) + \pi(u) - \pi(v).\f] |
|
| 88 |
|
|
| 89 |
All algorithms provide dual solution (node potentials), as well, |
|
| 90 |
if an optimal flow is found. |
|
| 91 |
|
|
| 92 |
|
|
| 93 |
\section mcf_eq Equality Form |
|
| 94 |
|
|
| 95 |
The above \ref mcf_def "definition" is actually more general than the |
|
| 96 |
usual formulation of the minimum cost flow problem, in which strict |
|
| 97 |
equalities are required in the supply/demand contraints. |
|
| 98 |
|
|
| 99 |
\f[ \min\sum_{uv\in A} f(uv) \cdot cost(uv) \f]
|
|
| 100 |
\f[ \sum_{uv\in A} f(uv) - \sum_{vu\in A} f(vu) =
|
|
| 101 |
sup(u) \quad \forall u\in V \f] |
|
| 102 |
\f[ lower(uv) \leq f(uv) \leq upper(uv) \quad \forall uv\in A \f] |
|
| 103 |
|
|
| 104 |
However if the sum of the supply values is zero, then these two problems |
|
| 105 |
are equivalent. |
|
| 106 |
The \ref min_cost_flow_algs "algorithms" in LEMON support the general |
|
| 107 |
form, so if you need the equality form, you have to ensure this additional |
|
| 108 |
contraint manually. |
|
| 109 |
|
|
| 110 |
|
|
| 111 |
\section mcf_leq Opposite Inequalites (LEQ Form) |
|
| 112 |
|
|
| 113 |
Another possible definition of the minimum cost flow problem is |
|
| 114 |
when there are <em>"less or equal"</em> (LEQ) supply/demand constraints, |
|
| 115 |
instead of the <em>"greater or equal"</em> (GEQ) constraints. |
|
| 116 |
|
|
| 117 |
\f[ \min\sum_{uv\in A} f(uv) \cdot cost(uv) \f]
|
|
| 118 |
\f[ \sum_{uv\in A} f(uv) - \sum_{vu\in A} f(vu) \leq
|
|
| 119 |
sup(u) \quad \forall u\in V \f] |
|
| 120 |
\f[ lower(uv) \leq f(uv) \leq upper(uv) \quad \forall uv\in A \f] |
|
| 121 |
|
|
| 122 |
It means that the total demand must be less or equal to the |
|
| 123 |
total supply (i.e. \f$\sum_{u\in V} sup(u)\f$ must be zero or
|
|
| 124 |
positive) and all the demands have to be satisfied, but there |
|
| 125 |
could be supplies that are not carried out from the supply |
|
| 126 |
nodes. |
|
| 127 |
The equality form is also a special case of this form, of course. |
|
| 128 |
|
|
| 129 |
You could easily transform this case to the \ref mcf_def "GEQ form" |
|
| 130 |
of the problem by reversing the direction of the arcs and taking the |
|
| 131 |
negative of the supply values (e.g. using \ref ReverseDigraph and |
|
| 132 |
\ref NegMap adaptors). |
|
| 133 |
However \ref NetworkSimplex algorithm also supports this form directly |
|
| 134 |
for the sake of convenience. |
|
| 135 |
|
|
| 136 |
Note that the optimality conditions for this supply constraint type are |
|
| 137 |
slightly differ from the conditions that are discussed for the GEQ form, |
|
| 138 |
namely the potentials have to be non-negative instead of non-positive. |
|
| 139 |
An \f$f: A\rightarrow\mathbf{R}\f$ feasible solution of this problem
|
|
| 140 |
is optimal if and only if for some \f$\pi: V\rightarrow\mathbf{R}\f$
|
|
| 141 |
node potentials the following conditions hold. |
|
| 142 |
|
|
| 143 |
- For all \f$uv\in A\f$ arcs: |
|
| 144 |
- if \f$cost^\pi(uv)>0\f$, then \f$f(uv)=lower(uv)\f$; |
|
| 145 |
- if \f$lower(uv)<f(uv)<upper(uv)\f$, then \f$cost^\pi(uv)=0\f$; |
|
| 146 |
- if \f$cost^\pi(uv)<0\f$, then \f$f(uv)=upper(uv)\f$. |
|
| 147 |
- For all \f$u\in V\f$ nodes: |
|
| 148 |
- \f$\pi(u)>=0\f$; |
|
| 149 |
- if \f$\sum_{uv\in A} f(uv) - \sum_{vu\in A} f(vu) \neq sup(u)\f$,
|
|
| 150 |
then \f$\pi(u)=0\f$. |
|
| 151 |
|
|
| 152 |
*/ |
|
| 153 |
} |
| 1 |
%%%%% Defining LEMON %%%%% |
|
| 2 |
|
|
| 3 |
@misc{lemon,
|
|
| 4 |
key = {LEMON},
|
|
| 5 |
title = {{LEMON} -- {L}ibrary for {E}fficient {M}odeling and
|
|
| 6 |
{O}ptimization in {N}etworks},
|
|
| 7 |
howpublished = {\url{http://lemon.cs.elte.hu/}},
|
|
| 8 |
year = 2009 |
|
| 9 |
} |
|
| 10 |
|
|
| 11 |
@misc{egres,
|
|
| 12 |
key = {EGRES},
|
|
| 13 |
title = {{EGRES} -- {E}gerv{\'a}ry {R}esearch {G}roup on
|
|
| 14 |
{C}ombinatorial {O}ptimization},
|
|
| 15 |
url = {http://www.cs.elte.hu/egres/}
|
|
| 16 |
} |
|
| 17 |
|
|
| 18 |
@misc{coinor,
|
|
| 19 |
key = {COIN-OR},
|
|
| 20 |
title = {{COIN-OR} -- {C}omputational {I}nfrastructure for
|
|
| 21 |
{O}perations {R}esearch},
|
|
| 22 |
url = {http://www.coin-or.org/}
|
|
| 23 |
} |
|
| 24 |
|
|
| 25 |
|
|
| 26 |
%%%%% Other libraries %%%%%% |
|
| 27 |
|
|
| 28 |
@misc{boost,
|
|
| 29 |
key = {Boost},
|
|
| 30 |
title = {{B}oost {C++} {L}ibraries},
|
|
| 31 |
url = {http://www.boost.org/}
|
|
| 32 |
} |
|
| 33 |
|
|
| 34 |
@book{bglbook,
|
|
| 35 |
author = {Jeremy G. Siek and Lee-Quan Lee and Andrew
|
|
| 36 |
Lumsdaine}, |
|
| 37 |
title = {The Boost Graph Library: User Guide and Reference
|
|
| 38 |
Manual}, |
|
| 39 |
publisher = {Addison-Wesley},
|
|
| 40 |
year = 2002 |
|
| 41 |
} |
|
| 42 |
|
|
| 43 |
@misc{leda,
|
|
| 44 |
key = {LEDA},
|
|
| 45 |
title = {{LEDA} -- {L}ibrary of {E}fficient {D}ata {T}ypes and
|
|
| 46 |
{A}lgorithms},
|
|
| 47 |
url = {http://www.algorithmic-solutions.com/}
|
|
| 48 |
} |
|
| 49 |
|
|
| 50 |
@book{ledabook,
|
|
| 51 |
author = {Kurt Mehlhorn and Stefan N{\"a}her},
|
|
| 52 |
title = {{LEDA}: {A} platform for combinatorial and geometric
|
|
| 53 |
computing}, |
|
| 54 |
isbn = {0-521-56329-1},
|
|
| 55 |
publisher = {Cambridge University Press},
|
|
| 56 |
address = {New York, NY, USA},
|
|
| 57 |
year = 1999 |
|
| 58 |
} |
|
| 59 |
|
|
| 60 |
|
|
| 61 |
%%%%% Tools that LEMON depends on %%%%% |
|
| 62 |
|
|
| 63 |
@misc{cmake,
|
|
| 64 |
key = {CMake},
|
|
| 65 |
title = {{CMake} -- {C}ross {P}latform {M}ake},
|
|
| 66 |
url = {http://www.cmake.org/}
|
|
| 67 |
} |
|
| 68 |
|
|
| 69 |
@misc{doxygen,
|
|
| 70 |
key = {Doxygen},
|
|
| 71 |
title = {{Doxygen} -- {S}ource code documentation generator
|
|
| 72 |
tool}, |
|
| 73 |
url = {http://www.doxygen.org/}
|
|
| 74 |
} |
|
| 75 |
|
|
| 76 |
|
|
| 77 |
%%%%% LP/MIP libraries %%%%% |
|
| 78 |
|
|
| 79 |
@misc{glpk,
|
|
| 80 |
key = {GLPK},
|
|
| 81 |
title = {{GLPK} -- {GNU} {L}inear {P}rogramming {K}it},
|
|
| 82 |
url = {http://www.gnu.org/software/glpk/}
|
|
| 83 |
} |
|
| 84 |
|
|
| 85 |
@misc{clp,
|
|
| 86 |
key = {Clp},
|
|
| 87 |
title = {{Clp} -- {Coin-Or} {L}inear {P}rogramming},
|
|
| 88 |
url = {http://projects.coin-or.org/Clp/}
|
|
| 89 |
} |
|
| 90 |
|
|
| 91 |
@misc{cbc,
|
|
| 92 |
key = {Cbc},
|
|
| 93 |
title = {{Cbc} -- {Coin-Or} {B}ranch and {C}ut},
|
|
| 94 |
url = {http://projects.coin-or.org/Cbc/}
|
|
| 95 |
} |
|
| 96 |
|
|
| 97 |
@misc{cplex,
|
|
| 98 |
key = {CPLEX},
|
|
| 99 |
title = {{ILOG} {CPLEX}},
|
|
| 100 |
url = {http://www.ilog.com/}
|
|
| 101 |
} |
|
| 102 |
|
|
| 103 |
@misc{soplex,
|
|
| 104 |
key = {SoPlex},
|
|
| 105 |
title = {{SoPlex} -- {T}he {S}equential {O}bject-{O}riented
|
|
| 106 |
{S}implex},
|
|
| 107 |
url = {http://soplex.zib.de/}
|
|
| 108 |
} |
|
| 109 |
|
|
| 110 |
|
|
| 111 |
%%%%% General books %%%%% |
|
| 112 |
|
|
| 113 |
@book{amo93networkflows,
|
|
| 114 |
author = {Ravindra K. Ahuja and Thomas L. Magnanti and James
|
|
| 115 |
B. Orlin}, |
|
| 116 |
title = {Network Flows: Theory, Algorithms, and Applications},
|
|
| 117 |
publisher = {Prentice-Hall, Inc.},
|
|
| 118 |
year = 1993, |
|
| 119 |
month = feb, |
|
| 120 |
isbn = {978-0136175490}
|
|
| 121 |
} |
|
| 122 |
|
|
| 123 |
@book{schrijver03combinatorial,
|
|
| 124 |
author = {Alexander Schrijver},
|
|
| 125 |
title = {Combinatorial Optimization: Polyhedra and Efficiency},
|
|
| 126 |
publisher = {Springer-Verlag},
|
|
| 127 |
year = 2003, |
|
| 128 |
isbn = {978-3540443896}
|
|
| 129 |
} |
|
| 130 |
|
|
| 131 |
@book{clrs01algorithms,
|
|
| 132 |
author = {Thomas H. Cormen and Charles E. Leiserson and Ronald
|
|
| 133 |
L. Rivest and Clifford Stein}, |
|
| 134 |
title = {Introduction to Algorithms},
|
|
| 135 |
publisher = {The MIT Press},
|
|
| 136 |
year = 2001, |
|
| 137 |
edition = {2nd}
|
|
| 138 |
} |
|
| 139 |
|
|
| 140 |
@book{stroustrup00cpp,
|
|
| 141 |
author = {Bjarne Stroustrup},
|
|
| 142 |
title = {The C++ Programming Language},
|
|
| 143 |
edition = {3rd},
|
|
| 144 |
publisher = {Addison-Wesley Professional},
|
|
| 145 |
isbn = 0201700735, |
|
| 146 |
month = {February},
|
|
| 147 |
year = 2000 |
|
| 148 |
} |
|
| 149 |
|
|
| 150 |
|
|
| 151 |
%%%%% Maximum flow algorithms %%%%% |
|
| 152 |
|
|
| 153 |
@article{edmondskarp72theoretical,
|
|
| 154 |
author = {Jack Edmonds and Richard M. Karp},
|
|
| 155 |
title = {Theoretical improvements in algorithmic efficiency
|
|
| 156 |
for network flow problems}, |
|
| 157 |
journal = {Journal of the ACM},
|
|
| 158 |
year = 1972, |
|
| 159 |
volume = 19, |
|
| 160 |
number = 2, |
|
| 161 |
pages = {248-264}
|
|
| 162 |
} |
|
| 163 |
|
|
| 164 |
@article{goldberg88newapproach,
|
|
| 165 |
author = {Andrew V. Goldberg and Robert E. Tarjan},
|
|
| 166 |
title = {A new approach to the maximum flow problem},
|
|
| 167 |
journal = {Journal of the ACM},
|
|
| 168 |
year = 1988, |
|
| 169 |
volume = 35, |
|
| 170 |
number = 4, |
|
| 171 |
pages = {921-940}
|
|
| 172 |
} |
|
| 173 |
|
|
| 174 |
@article{dinic70algorithm,
|
|
| 175 |
author = {E. A. Dinic},
|
|
| 176 |
title = {Algorithm for solution of a problem of maximum flow
|
|
| 177 |
in a network with power estimation}, |
|
| 178 |
journal = {Soviet Math. Doklady},
|
|
| 179 |
year = 1970, |
|
| 180 |
volume = 11, |
|
| 181 |
pages = {1277-1280}
|
|
| 182 |
} |
|
| 183 |
|
|
| 184 |
@article{goldberg08partial,
|
|
| 185 |
author = {Andrew V. Goldberg},
|
|
| 186 |
title = {The Partial Augment-Relabel Algorithm for the
|
|
| 187 |
Maximum Flow Problem}, |
|
| 188 |
journal = {16th Annual European Symposium on Algorithms},
|
|
| 189 |
year = 2008, |
|
| 190 |
pages = {466-477}
|
|
| 191 |
} |
|
| 192 |
|
|
| 193 |
@article{sleator83dynamic,
|
|
| 194 |
author = {Daniel D. Sleator and Robert E. Tarjan},
|
|
| 195 |
title = {A data structure for dynamic trees},
|
|
| 196 |
journal = {Journal of Computer and System Sciences},
|
|
| 197 |
year = 1983, |
|
| 198 |
volume = 26, |
|
| 199 |
number = 3, |
|
| 200 |
pages = {362-391}
|
|
| 201 |
} |
|
| 202 |
|
|
| 203 |
|
|
| 204 |
%%%%% Minimum mean cycle algorithms %%%%% |
|
| 205 |
|
|
| 206 |
@article{karp78characterization,
|
|
| 207 |
author = {Richard M. Karp},
|
|
| 208 |
title = {A characterization of the minimum cycle mean in a
|
|
| 209 |
digraph}, |
|
| 210 |
journal = {Discrete Math.},
|
|
| 211 |
year = 1978, |
|
| 212 |
volume = 23, |
|
| 213 |
pages = {309-311}
|
|
| 214 |
} |
|
| 215 |
|
|
| 216 |
@article{dasdan98minmeancycle,
|
|
| 217 |
author = {Ali Dasdan and Rajesh K. Gupta},
|
|
| 218 |
title = {Faster Maximum and Minimum Mean Cycle Alogrithms for
|
|
| 219 |
System Performance Analysis}, |
|
| 220 |
journal = {IEEE Transactions on Computer-Aided Design of
|
|
| 221 |
Integrated Circuits and Systems}, |
|
| 222 |
year = 1998, |
|
| 223 |
volume = 17, |
|
| 224 |
number = 10, |
|
| 225 |
pages = {889-899}
|
|
| 226 |
} |
|
| 227 |
|
|
| 228 |
|
|
| 229 |
%%%%% Minimum cost flow algorithms %%%%% |
|
| 230 |
|
|
| 231 |
@article{klein67primal,
|
|
| 232 |
author = {Morton Klein},
|
|
| 233 |
title = {A primal method for minimal cost flows with
|
|
| 234 |
applications to the assignment and transportation |
|
| 235 |
problems}, |
|
| 236 |
journal = {Management Science},
|
|
| 237 |
year = 1967, |
|
| 238 |
volume = 14, |
|
| 239 |
pages = {205-220}
|
|
| 240 |
} |
|
| 241 |
|
|
| 242 |
@article{goldberg89cyclecanceling,
|
|
| 243 |
author = {Andrew V. Goldberg and Robert E. Tarjan},
|
|
| 244 |
title = {Finding minimum-cost circulations by canceling
|
|
| 245 |
negative cycles}, |
|
| 246 |
journal = {Journal of the ACM},
|
|
| 247 |
year = 1989, |
|
| 248 |
volume = 36, |
|
| 249 |
number = 4, |
|
| 250 |
pages = {873-886}
|
|
| 251 |
} |
|
| 252 |
|
|
| 253 |
@article{goldberg90approximation,
|
|
| 254 |
author = {Andrew V. Goldberg and Robert E. Tarjan},
|
|
| 255 |
title = {Finding Minimum-Cost Circulations by Successive
|
|
| 256 |
Approximation}, |
|
| 257 |
journal = {Mathematics of Operations Research},
|
|
| 258 |
year = 1990, |
|
| 259 |
volume = 15, |
|
| 260 |
number = 3, |
|
| 261 |
pages = {430-466}
|
|
| 262 |
} |
|
| 263 |
|
|
| 264 |
@article{goldberg97efficient,
|
|
| 265 |
author = {Andrew V. Goldberg},
|
|
| 266 |
title = {An Efficient Implementation of a Scaling
|
|
| 267 |
Minimum-Cost Flow Algorithm}, |
|
| 268 |
journal = {Journal of Algorithms},
|
|
| 269 |
year = 1997, |
|
| 270 |
volume = 22, |
|
| 271 |
number = 1, |
|
| 272 |
pages = {1-29}
|
|
| 273 |
} |
|
| 274 |
|
|
| 275 |
@article{bunnagel98efficient,
|
|
| 276 |
author = {Ursula B{\"u}nnagel and Bernhard Korte and Jens
|
|
| 277 |
Vygen}, |
|
| 278 |
title = {Efficient implementation of the {G}oldberg-{T}arjan
|
|
| 279 |
minimum-cost flow algorithm}, |
|
| 280 |
journal = {Optimization Methods and Software},
|
|
| 281 |
year = 1998, |
|
| 282 |
volume = 10, |
|
| 283 |
pages = {157-174}
|
|
| 284 |
} |
|
| 285 |
|
|
| 286 |
@book{dantzig63linearprog,
|
|
| 287 |
author = {George B. Dantzig},
|
|
| 288 |
title = {Linear Programming and Extensions},
|
|
| 289 |
publisher = {Princeton University Press},
|
|
| 290 |
year = 1963 |
|
| 291 |
} |
|
| 292 |
|
|
| 293 |
@mastersthesis{kellyoneill91netsimplex,
|
|
| 294 |
author = {Damian J. Kelly and Garrett M. O'Neill},
|
|
| 295 |
title = {The Minimum Cost Flow Problem and The Network
|
|
| 296 |
Simplex Method}, |
|
| 297 |
school = {University College},
|
|
| 298 |
address = {Dublin, Ireland},
|
|
| 299 |
year = 1991, |
|
| 300 |
month = sep, |
|
| 301 |
} |
| 1 |
/* -*- C++ -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2008 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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* (Egervary Research Group on Combinatorial Optimization, EGRES). |
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* |
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* Permission to use, modify and distribute this software is granted |
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* provided that this copyright notice appears in all copies. For |
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* precise terms see the accompanying LICENSE file. |
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* |
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* This software is provided "AS IS" with no warranty of any kind, |
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* express or implied, and with no claim as to its suitability for any |
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* purpose. |
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* |
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*/ |
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#ifndef LEMON_BELLMAN_FORD_H |
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#define LEMON_BELLMAN_FORD_H |
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/// \ingroup shortest_path |
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/// \file |
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/// \brief Bellman-Ford algorithm. |
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|
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#include <lemon/list_graph.h> |
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#include <lemon/bits/path_dump.h> |
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#include <lemon/core.h> |
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#include <lemon/error.h> |
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#include <lemon/maps.h> |
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#include <lemon/path.h> |
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|
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#include <limits> |
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|
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namespace lemon {
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/// \brief Default OperationTraits for the BellmanFord algorithm class. |
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/// |
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/// This operation traits class defines all computational operations |
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/// and constants that are used in the Bellman-Ford algorithm. |
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/// The default implementation is based on the \c numeric_limits class. |
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/// If the numeric type does not have infinity value, then the maximum |
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/// value is used as extremal infinity value. |
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template < |
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typename V, |
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bool has_inf = std::numeric_limits<V>::has_infinity> |
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struct BellmanFordDefaultOperationTraits {
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/// \e |
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typedef V Value; |
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/// \brief Gives back the zero value of the type. |
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static Value zero() {
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return static_cast<Value>(0); |
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} |
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/// \brief Gives back the positive infinity value of the type. |
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static Value infinity() {
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return std::numeric_limits<Value>::infinity(); |
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} |
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/// \brief Gives back the sum of the given two elements. |
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static Value plus(const Value& left, const Value& right) {
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return left + right; |
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} |
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/// \brief Gives back \c true only if the first value is less than |
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/// the second. |
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static bool less(const Value& left, const Value& right) {
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return left < right; |
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} |
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}; |
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template <typename V> |
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struct BellmanFordDefaultOperationTraits<V, false> {
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typedef V Value; |
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static Value zero() {
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return static_cast<Value>(0); |
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} |
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static Value infinity() {
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return std::numeric_limits<Value>::max(); |
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} |
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static Value plus(const Value& left, const Value& right) {
|
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if (left == infinity() || right == infinity()) return infinity(); |
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return left + right; |
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} |
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static bool less(const Value& left, const Value& right) {
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return left < right; |
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} |
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}; |
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|
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/// \brief Default traits class of BellmanFord class. |
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/// |
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/// Default traits class of BellmanFord class. |
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/// \param GR The type of the digraph. |
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/// \param LEN The type of the length map. |
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template<typename GR, typename LEN> |
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struct BellmanFordDefaultTraits {
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/// The type of the digraph the algorithm runs on. |
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typedef GR Digraph; |
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|
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/// \brief The type of the map that stores the arc lengths. |
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/// |
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/// The type of the map that stores the arc lengths. |
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/// It must conform to the \ref concepts::ReadMap "ReadMap" concept. |
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typedef LEN LengthMap; |
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|
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/// The type of the arc lengths. |
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typedef typename LEN::Value Value; |
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|
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/// \brief Operation traits for Bellman-Ford algorithm. |
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/// |
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/// It defines the used operations and the infinity value for the |
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/// given \c Value type. |
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/// \see BellmanFordDefaultOperationTraits |
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typedef BellmanFordDefaultOperationTraits<Value> OperationTraits; |
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|
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/// \brief The type of the map that stores the last arcs of the |
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/// shortest paths. |
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/// |
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/// The type of the map that stores the last |
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/// arcs of the shortest paths. |
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/// It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
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typedef typename GR::template NodeMap<typename GR::Arc> PredMap; |
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|
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/// \brief Instantiates a \c PredMap. |
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/// |
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/// This function instantiates a \ref PredMap. |
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/// \param g is the digraph to which we would like to define the |
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/// \ref PredMap. |
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static PredMap *createPredMap(const GR& g) {
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return new PredMap(g); |
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} |
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|
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/// \brief The type of the map that stores the distances of the nodes. |
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/// |
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/// The type of the map that stores the distances of the nodes. |
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/// It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
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typedef typename GR::template NodeMap<typename LEN::Value> DistMap; |
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|
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/// \brief Instantiates a \c DistMap. |
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/// |
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/// This function instantiates a \ref DistMap. |
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/// \param g is the digraph to which we would like to define the |
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/// \ref DistMap. |
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static DistMap *createDistMap(const GR& g) {
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return new DistMap(g); |
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} |
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|
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}; |
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|
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/// \brief %BellmanFord algorithm class. |
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/// |
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/// \ingroup shortest_path |
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/// This class provides an efficient implementation of the Bellman-Ford |
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/// algorithm. The maximum time complexity of the algorithm is |
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/// <tt>O(ne)</tt>. |
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/// |
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/// The Bellman-Ford algorithm solves the single-source shortest path |
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/// problem when the arcs can have negative lengths, but the digraph |
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/// should not contain directed cycles with negative total length. |
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/// If all arc costs are non-negative, consider to use the Dijkstra |
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/// algorithm instead, since it is more efficient. |
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/// |
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/// The arc lengths are passed to the algorithm using a |
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/// \ref concepts::ReadMap "ReadMap", so it is easy to change it to any |
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/// kind of length. The type of the length values is determined by the |
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/// \ref concepts::ReadMap::Value "Value" type of the length map. |
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/// |
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/// There is also a \ref bellmanFord() "function-type interface" for the |
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/// Bellman-Ford algorithm, which is convenient in the simplier cases and |
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/// it can be used easier. |
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/// |
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/// \tparam GR The type of the digraph the algorithm runs on. |
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/// The default type is \ref ListDigraph. |
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/// \tparam LEN A \ref concepts::ReadMap "readable" arc map that specifies |
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/// the lengths of the arcs. The default map type is |
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/// \ref concepts::Digraph::ArcMap "GR::ArcMap<int>". |
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#ifdef DOXYGEN |
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template <typename GR, typename LEN, typename TR> |
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#else |
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template <typename GR=ListDigraph, |
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typename LEN=typename GR::template ArcMap<int>, |
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typename TR=BellmanFordDefaultTraits<GR,LEN> > |
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#endif |
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class BellmanFord {
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public: |
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|
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///The type of the underlying digraph. |
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typedef typename TR::Digraph Digraph; |
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|
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/// \brief The type of the arc lengths. |
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typedef typename TR::LengthMap::Value Value; |
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/// \brief The type of the map that stores the arc lengths. |
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typedef typename TR::LengthMap LengthMap; |
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/// \brief The type of the map that stores the last |
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/// arcs of the shortest paths. |
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typedef typename TR::PredMap PredMap; |
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/// \brief The type of the map that stores the distances of the nodes. |
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typedef typename TR::DistMap DistMap; |
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/// The type of the paths. |
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typedef PredMapPath<Digraph, PredMap> Path; |
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///\brief The \ref BellmanFordDefaultOperationTraits |
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/// "operation traits class" of the algorithm. |
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typedef typename TR::OperationTraits OperationTraits; |
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|
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///The \ref BellmanFordDefaultTraits "traits class" of the algorithm. |
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typedef TR Traits; |
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|
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private: |
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|
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typedef typename Digraph::Node Node; |
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typedef typename Digraph::NodeIt NodeIt; |
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typedef typename Digraph::Arc Arc; |
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typedef typename Digraph::OutArcIt OutArcIt; |
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|
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// Pointer to the underlying digraph. |
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const Digraph *_gr; |
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// Pointer to the length map |
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const LengthMap *_length; |
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// Pointer to the map of predecessors arcs. |
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PredMap *_pred; |
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// Indicates if _pred is locally allocated (true) or not. |
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bool _local_pred; |
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// Pointer to the map of distances. |
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DistMap *_dist; |
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// Indicates if _dist is locally allocated (true) or not. |
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bool _local_dist; |
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|
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typedef typename Digraph::template NodeMap<bool> MaskMap; |
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MaskMap *_mask; |
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|
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std::vector<Node> _process; |
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|
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// Creates the maps if necessary. |
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void create_maps() {
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if(!_pred) {
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_local_pred = true; |
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_pred = Traits::createPredMap(*_gr); |
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} |
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if(!_dist) {
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_local_dist = true; |
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_dist = Traits::createDistMap(*_gr); |
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} |
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_mask = new MaskMap(*_gr, false); |
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} |
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|
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public : |
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|
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typedef BellmanFord Create; |
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|
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/// \name Named Template Parameters |
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| 248 |
|
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///@{
|
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|
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template <class T> |
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struct SetPredMapTraits : public Traits {
|
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typedef T PredMap; |
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static PredMap *createPredMap(const Digraph&) {
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LEMON_ASSERT(false, "PredMap is not initialized"); |
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return 0; // ignore warnings |
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} |
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}; |
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| 259 |
|
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/// \brief \ref named-templ-param "Named parameter" for setting |
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| 261 |
/// \c PredMap type. |
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| 262 |
/// |
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| 263 |
/// \ref named-templ-param "Named parameter" for setting |
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| 264 |
/// \c PredMap type. |
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| 265 |
/// It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
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template <class T> |
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struct SetPredMap |
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: public BellmanFord< Digraph, LengthMap, SetPredMapTraits<T> > {
|
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typedef BellmanFord< Digraph, LengthMap, SetPredMapTraits<T> > Create; |
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}; |
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| 271 |
|
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template <class T> |
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struct SetDistMapTraits : public Traits {
|
|
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typedef T DistMap; |
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| 275 |
static DistMap *createDistMap(const Digraph&) {
|
|
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LEMON_ASSERT(false, "DistMap is not initialized"); |
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return 0; // ignore warnings |
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} |
|
| 279 |
}; |
|
| 280 |
|
|
| 281 |
/// \brief \ref named-templ-param "Named parameter" for setting |
|
| 282 |
/// \c DistMap type. |
|
| 283 |
/// |
|
| 284 |
/// \ref named-templ-param "Named parameter" for setting |
|
| 285 |
/// \c DistMap type. |
|
| 286 |
/// It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
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| 287 |
template <class T> |
|
| 288 |
struct SetDistMap |
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| 289 |
: public BellmanFord< Digraph, LengthMap, SetDistMapTraits<T> > {
|
|
| 290 |
typedef BellmanFord< Digraph, LengthMap, SetDistMapTraits<T> > Create; |
|
| 291 |
}; |
|
| 292 |
|
|
| 293 |
template <class T> |
|
| 294 |
struct SetOperationTraitsTraits : public Traits {
|
|
| 295 |
typedef T OperationTraits; |
|
| 296 |
}; |
|
| 297 |
|
|
| 298 |
/// \brief \ref named-templ-param "Named parameter" for setting |
|
| 299 |
/// \c OperationTraits type. |
|
| 300 |
/// |
|
| 301 |
/// \ref named-templ-param "Named parameter" for setting |
|
| 302 |
/// \c OperationTraits type. |
|
| 303 |
/// For more information see \ref BellmanFordDefaultOperationTraits. |
|
| 304 |
template <class T> |
|
| 305 |
struct SetOperationTraits |
|
| 306 |
: public BellmanFord< Digraph, LengthMap, SetOperationTraitsTraits<T> > {
|
|
| 307 |
typedef BellmanFord< Digraph, LengthMap, SetOperationTraitsTraits<T> > |
|
| 308 |
Create; |
|
| 309 |
}; |
|
| 310 |
|
|
| 311 |
///@} |
|
| 312 |
|
|
| 313 |
protected: |
|
| 314 |
|
|
| 315 |
BellmanFord() {}
|
|
| 316 |
|
|
| 317 |
public: |
|
| 318 |
|
|
| 319 |
/// \brief Constructor. |
|
| 320 |
/// |
|
| 321 |
/// Constructor. |
|
| 322 |
/// \param g The digraph the algorithm runs on. |
|
| 323 |
/// \param length The length map used by the algorithm. |
|
| 324 |
BellmanFord(const Digraph& g, const LengthMap& length) : |
|
| 325 |
_gr(&g), _length(&length), |
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| 326 |
_pred(0), _local_pred(false), |
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| 327 |
_dist(0), _local_dist(false), _mask(0) {}
|
|
| 328 |
|
|
| 329 |
///Destructor. |
|
| 330 |
~BellmanFord() {
|
|
| 331 |
if(_local_pred) delete _pred; |
|
| 332 |
if(_local_dist) delete _dist; |
|
| 333 |
if(_mask) delete _mask; |
|
| 334 |
} |
|
| 335 |
|
|
| 336 |
/// \brief Sets the length map. |
|
| 337 |
/// |
|
| 338 |
/// Sets the length map. |
|
| 339 |
/// \return <tt>(*this)</tt> |
|
| 340 |
BellmanFord &lengthMap(const LengthMap &map) {
|
|
| 341 |
_length = ↦ |
|
| 342 |
return *this; |
|
| 343 |
} |
|
| 344 |
|
|
| 345 |
/// \brief Sets the map that stores the predecessor arcs. |
|
| 346 |
/// |
|
| 347 |
/// Sets the map that stores the predecessor arcs. |
|
| 348 |
/// If you don't use this function before calling \ref run() |
|
| 349 |
/// or \ref init(), an instance will be allocated automatically. |
|
| 350 |
/// The destructor deallocates this automatically allocated map, |
|
| 351 |
/// of course. |
|
| 352 |
/// \return <tt>(*this)</tt> |
|
| 353 |
BellmanFord &predMap(PredMap &map) {
|
|
| 354 |
if(_local_pred) {
|
|
| 355 |
delete _pred; |
|
| 356 |
_local_pred=false; |
|
| 357 |
} |
|
| 358 |
_pred = ↦ |
|
| 359 |
return *this; |
|
| 360 |
} |
|
| 361 |
|
|
| 362 |
/// \brief Sets the map that stores the distances of the nodes. |
|
| 363 |
/// |
|
| 364 |
/// Sets the map that stores the distances of the nodes calculated |
|
| 365 |
/// by the algorithm. |
|
| 366 |
/// If you don't use this function before calling \ref run() |
|
| 367 |
/// or \ref init(), an instance will be allocated automatically. |
|
| 368 |
/// The destructor deallocates this automatically allocated map, |
|
| 369 |
/// of course. |
|
| 370 |
/// \return <tt>(*this)</tt> |
|
| 371 |
BellmanFord &distMap(DistMap &map) {
|
|
| 372 |
if(_local_dist) {
|
|
| 373 |
delete _dist; |
|
| 374 |
_local_dist=false; |
|
| 375 |
} |
|
| 376 |
_dist = ↦ |
|
| 377 |
return *this; |
|
| 378 |
} |
|
| 379 |
|
|
| 380 |
/// \name Execution Control |
|
| 381 |
/// The simplest way to execute the Bellman-Ford algorithm is to use |
|
| 382 |
/// one of the member functions called \ref run().\n |
|
| 383 |
/// If you need better control on the execution, you have to call |
|
| 384 |
/// \ref init() first, then you can add several source nodes |
|
| 385 |
/// with \ref addSource(). Finally the actual path computation can be |
|
| 386 |
/// performed with \ref start(), \ref checkedStart() or |
|
| 387 |
/// \ref limitedStart(). |
|
| 388 |
|
|
| 389 |
///@{
|
|
| 390 |
|
|
| 391 |
/// \brief Initializes the internal data structures. |
|
| 392 |
/// |
|
| 393 |
/// Initializes the internal data structures. The optional parameter |
|
| 394 |
/// is the initial distance of each node. |
|
| 395 |
void init(const Value value = OperationTraits::infinity()) {
|
|
| 396 |
create_maps(); |
|
| 397 |
for (NodeIt it(*_gr); it != INVALID; ++it) {
|
|
| 398 |
_pred->set(it, INVALID); |
|
| 399 |
_dist->set(it, value); |
|
| 400 |
} |
|
| 401 |
_process.clear(); |
|
| 402 |
if (OperationTraits::less(value, OperationTraits::infinity())) {
|
|
| 403 |
for (NodeIt it(*_gr); it != INVALID; ++it) {
|
|
| 404 |
_process.push_back(it); |
|
| 405 |
_mask->set(it, true); |
|
| 406 |
} |
|
| 407 |
} |
|
| 408 |
} |
|
| 409 |
|
|
| 410 |
/// \brief Adds a new source node. |
|
| 411 |
/// |
|
| 412 |
/// This function adds a new source node. The optional second parameter |
|
| 413 |
/// is the initial distance of the node. |
|
| 414 |
void addSource(Node source, Value dst = OperationTraits::zero()) {
|
|
| 415 |
_dist->set(source, dst); |
|
| 416 |
if (!(*_mask)[source]) {
|
|
| 417 |
_process.push_back(source); |
|
| 418 |
_mask->set(source, true); |
|
| 419 |
} |
|
| 420 |
} |
|
| 421 |
|
|
| 422 |
/// \brief Executes one round from the Bellman-Ford algorithm. |
|
| 423 |
/// |
|
| 424 |
/// If the algoritm calculated the distances in the previous round |
|
| 425 |
/// exactly for the paths of at most \c k arcs, then this function |
|
| 426 |
/// will calculate the distances exactly for the paths of at most |
|
| 427 |
/// <tt>k+1</tt> arcs. Performing \c k iterations using this function |
|
| 428 |
/// calculates the shortest path distances exactly for the paths |
|
| 429 |
/// consisting of at most \c k arcs. |
|
| 430 |
/// |
|
| 431 |
/// \warning The paths with limited arc number cannot be retrieved |
|
| 432 |
/// easily with \ref path() or \ref predArc() functions. If you also |
|
| 433 |
/// need the shortest paths and not only the distances, you should |
|
| 434 |
/// store the \ref predMap() "predecessor map" after each iteration |
|
| 435 |
/// and build the path manually. |
|
| 436 |
/// |
|
| 437 |
/// \return \c true when the algorithm have not found more shorter |
|
| 438 |
/// paths. |
|
| 439 |
/// |
|
| 440 |
/// \see ActiveIt |
|
| 441 |
bool processNextRound() {
|
|
| 442 |
for (int i = 0; i < int(_process.size()); ++i) {
|
|
| 443 |
_mask->set(_process[i], false); |
|
| 444 |
} |
|
| 445 |
std::vector<Node> nextProcess; |
|
| 446 |
std::vector<Value> values(_process.size()); |
|
| 447 |
for (int i = 0; i < int(_process.size()); ++i) {
|
|
| 448 |
values[i] = (*_dist)[_process[i]]; |
|
| 449 |
} |
|
| 450 |
for (int i = 0; i < int(_process.size()); ++i) {
|
|
| 451 |
for (OutArcIt it(*_gr, _process[i]); it != INVALID; ++it) {
|
|
| 452 |
Node target = _gr->target(it); |
|
| 453 |
Value relaxed = OperationTraits::plus(values[i], (*_length)[it]); |
|
| 454 |
if (OperationTraits::less(relaxed, (*_dist)[target])) {
|
|
| 455 |
_pred->set(target, it); |
|
| 456 |
_dist->set(target, relaxed); |
|
| 457 |
if (!(*_mask)[target]) {
|
|
| 458 |
_mask->set(target, true); |
|
| 459 |
nextProcess.push_back(target); |
|
| 460 |
} |
|
| 461 |
} |
|
| 462 |
} |
|
| 463 |
} |
|
| 464 |
_process.swap(nextProcess); |
|
| 465 |
return _process.empty(); |
|
| 466 |
} |
|
| 467 |
|
|
| 468 |
/// \brief Executes one weak round from the Bellman-Ford algorithm. |
|
| 469 |
/// |
|
| 470 |
/// If the algorithm calculated the distances in the previous round |
|
| 471 |
/// at least for the paths of at most \c k arcs, then this function |
|
| 472 |
/// will calculate the distances at least for the paths of at most |
|
| 473 |
/// <tt>k+1</tt> arcs. |
|
| 474 |
/// This function does not make it possible to calculate the shortest |
|
| 475 |
/// path distances exactly for paths consisting of at most \c k arcs, |
|
| 476 |
/// this is why it is called weak round. |
|
| 477 |
/// |
|
| 478 |
/// \return \c true when the algorithm have not found more shorter |
|
| 479 |
/// paths. |
|
| 480 |
/// |
|
| 481 |
/// \see ActiveIt |
|
| 482 |
bool processNextWeakRound() {
|
|
| 483 |
for (int i = 0; i < int(_process.size()); ++i) {
|
|
| 484 |
_mask->set(_process[i], false); |
|
| 485 |
} |
|
| 486 |
std::vector<Node> nextProcess; |
|
| 487 |
for (int i = 0; i < int(_process.size()); ++i) {
|
|
| 488 |
for (OutArcIt it(*_gr, _process[i]); it != INVALID; ++it) {
|
|
| 489 |
Node target = _gr->target(it); |
|
| 490 |
Value relaxed = |
|
| 491 |
OperationTraits::plus((*_dist)[_process[i]], (*_length)[it]); |
|
| 492 |
if (OperationTraits::less(relaxed, (*_dist)[target])) {
|
|
| 493 |
_pred->set(target, it); |
|
| 494 |
_dist->set(target, relaxed); |
|
| 495 |
if (!(*_mask)[target]) {
|
|
| 496 |
_mask->set(target, true); |
|
| 497 |
nextProcess.push_back(target); |
|
| 498 |
} |
|
| 499 |
} |
|
| 500 |
} |
|
| 501 |
} |
|
| 502 |
_process.swap(nextProcess); |
|
| 503 |
return _process.empty(); |
|
| 504 |
} |
|
| 505 |
|
|
| 506 |
/// \brief Executes the algorithm. |
|
| 507 |
/// |
|
| 508 |
/// Executes the algorithm. |
|
| 509 |
/// |
|
| 510 |
/// This method runs the Bellman-Ford algorithm from the root node(s) |
|
| 511 |
/// in order to compute the shortest path to each node. |
|
| 512 |
/// |
|
| 513 |
/// The algorithm computes |
|
| 514 |
/// - the shortest path tree (forest), |
|
| 515 |
/// - the distance of each node from the root(s). |
|
| 516 |
/// |
|
| 517 |
/// \pre init() must be called and at least one root node should be |
|
| 518 |
/// added with addSource() before using this function. |
|
| 519 |
void start() {
|
|
| 520 |
int num = countNodes(*_gr) - 1; |
|
| 521 |
for (int i = 0; i < num; ++i) {
|
|
| 522 |
if (processNextWeakRound()) break; |
|
| 523 |
} |
|
| 524 |
} |
|
| 525 |
|
|
| 526 |
/// \brief Executes the algorithm and checks the negative cycles. |
|
| 527 |
/// |
|
| 528 |
/// Executes the algorithm and checks the negative cycles. |
|
| 529 |
/// |
|
| 530 |
/// This method runs the Bellman-Ford algorithm from the root node(s) |
|
| 531 |
/// in order to compute the shortest path to each node and also checks |
|
| 532 |
/// if the digraph contains cycles with negative total length. |
|
| 533 |
/// |
|
| 534 |
/// The algorithm computes |
|
| 535 |
/// - the shortest path tree (forest), |
|
| 536 |
/// - the distance of each node from the root(s). |
|
| 537 |
/// |
|
| 538 |
/// \return \c false if there is a negative cycle in the digraph. |
|
| 539 |
/// |
|
| 540 |
/// \pre init() must be called and at least one root node should be |
|
| 541 |
/// added with addSource() before using this function. |
|
| 542 |
bool checkedStart() {
|
|
| 543 |
int num = countNodes(*_gr); |
|
| 544 |
for (int i = 0; i < num; ++i) {
|
|
| 545 |
if (processNextWeakRound()) return true; |
|
| 546 |
} |
|
| 547 |
return _process.empty(); |
|
| 548 |
} |
|
| 549 |
|
|
| 550 |
/// \brief Executes the algorithm with arc number limit. |
|
| 551 |
/// |
|
| 552 |
/// Executes the algorithm with arc number limit. |
|
| 553 |
/// |
|
| 554 |
/// This method runs the Bellman-Ford algorithm from the root node(s) |
|
| 555 |
/// in order to compute the shortest path distance for each node |
|
| 556 |
/// using only the paths consisting of at most \c num arcs. |
|
| 557 |
/// |
|
| 558 |
/// The algorithm computes |
|
| 559 |
/// - the limited distance of each node from the root(s), |
|
| 560 |
/// - the predecessor arc for each node. |
|
| 561 |
/// |
|
| 562 |
/// \warning The paths with limited arc number cannot be retrieved |
|
| 563 |
/// easily with \ref path() or \ref predArc() functions. If you also |
|
| 564 |
/// need the shortest paths and not only the distances, you should |
|
| 565 |
/// store the \ref predMap() "predecessor map" after each iteration |
|
| 566 |
/// and build the path manually. |
|
| 567 |
/// |
|
| 568 |
/// \pre init() must be called and at least one root node should be |
|
| 569 |
/// added with addSource() before using this function. |
|
| 570 |
void limitedStart(int num) {
|
|
| 571 |
for (int i = 0; i < num; ++i) {
|
|
| 572 |
if (processNextRound()) break; |
|
| 573 |
} |
|
| 574 |
} |
|
| 575 |
|
|
| 576 |
/// \brief Runs the algorithm from the given root node. |
|
| 577 |
/// |
|
| 578 |
/// This method runs the Bellman-Ford algorithm from the given root |
|
| 579 |
/// node \c s in order to compute the shortest path to each node. |
|
| 580 |
/// |
|
| 581 |
/// The algorithm computes |
|
| 582 |
/// - the shortest path tree (forest), |
|
| 583 |
/// - the distance of each node from the root(s). |
|
| 584 |
/// |
|
| 585 |
/// \note bf.run(s) is just a shortcut of the following code. |
|
| 586 |
/// \code |
|
| 587 |
/// bf.init(); |
|
| 588 |
/// bf.addSource(s); |
|
| 589 |
/// bf.start(); |
|
| 590 |
/// \endcode |
|
| 591 |
void run(Node s) {
|
|
| 592 |
init(); |
|
| 593 |
addSource(s); |
|
| 594 |
start(); |
|
| 595 |
} |
|
| 596 |
|
|
| 597 |
/// \brief Runs the algorithm from the given root node with arc |
|
| 598 |
/// number limit. |
|
| 599 |
/// |
|
| 600 |
/// This method runs the Bellman-Ford algorithm from the given root |
|
| 601 |
/// node \c s in order to compute the shortest path distance for each |
|
| 602 |
/// node using only the paths consisting of at most \c num arcs. |
|
| 603 |
/// |
|
| 604 |
/// The algorithm computes |
|
| 605 |
/// - the limited distance of each node from the root(s), |
|
| 606 |
/// - the predecessor arc for each node. |
|
| 607 |
/// |
|
| 608 |
/// \warning The paths with limited arc number cannot be retrieved |
|
| 609 |
/// easily with \ref path() or \ref predArc() functions. If you also |
|
| 610 |
/// need the shortest paths and not only the distances, you should |
|
| 611 |
/// store the \ref predMap() "predecessor map" after each iteration |
|
| 612 |
/// and build the path manually. |
|
| 613 |
/// |
|
| 614 |
/// \note bf.run(s, num) is just a shortcut of the following code. |
|
| 615 |
/// \code |
|
| 616 |
/// bf.init(); |
|
| 617 |
/// bf.addSource(s); |
|
| 618 |
/// bf.limitedStart(num); |
|
| 619 |
/// \endcode |
|
| 620 |
void run(Node s, int num) {
|
|
| 621 |
init(); |
|
| 622 |
addSource(s); |
|
| 623 |
limitedStart(num); |
|
| 624 |
} |
|
| 625 |
|
|
| 626 |
///@} |
|
| 627 |
|
|
| 628 |
/// \brief LEMON iterator for getting the active nodes. |
|
| 629 |
/// |
|
| 630 |
/// This class provides a common style LEMON iterator that traverses |
|
| 631 |
/// the active nodes of the Bellman-Ford algorithm after the last |
|
| 632 |
/// phase. These nodes should be checked in the next phase to |
|
| 633 |
/// find augmenting arcs outgoing from them. |
|
| 634 |
class ActiveIt {
|
|
| 635 |
public: |
|
| 636 |
|
|
| 637 |
/// \brief Constructor. |
|
| 638 |
/// |
|
| 639 |
/// Constructor for getting the active nodes of the given BellmanFord |
|
| 640 |
/// instance. |
|
| 641 |
ActiveIt(const BellmanFord& algorithm) : _algorithm(&algorithm) |
|
| 642 |
{
|
|
| 643 |
_index = _algorithm->_process.size() - 1; |
|
| 644 |
} |
|
| 645 |
|
|
| 646 |
/// \brief Invalid constructor. |
|
| 647 |
/// |
|
| 648 |
/// Invalid constructor. |
|
| 649 |
ActiveIt(Invalid) : _algorithm(0), _index(-1) {}
|
|
| 650 |
|
|
| 651 |
/// \brief Conversion to \c Node. |
|
| 652 |
/// |
|
| 653 |
/// Conversion to \c Node. |
|
| 654 |
operator Node() const {
|
|
| 655 |
return _index >= 0 ? _algorithm->_process[_index] : INVALID; |
|
| 656 |
} |
|
| 657 |
|
|
| 658 |
/// \brief Increment operator. |
|
| 659 |
/// |
|
| 660 |
/// Increment operator. |
|
| 661 |
ActiveIt& operator++() {
|
|
| 662 |
--_index; |
|
| 663 |
return *this; |
|
| 664 |
} |
|
| 665 |
|
|
| 666 |
bool operator==(const ActiveIt& it) const {
|
|
| 667 |
return static_cast<Node>(*this) == static_cast<Node>(it); |
|
| 668 |
} |
|
| 669 |
bool operator!=(const ActiveIt& it) const {
|
|
| 670 |
return static_cast<Node>(*this) != static_cast<Node>(it); |
|
| 671 |
} |
|
| 672 |
bool operator<(const ActiveIt& it) const {
|
|
| 673 |
return static_cast<Node>(*this) < static_cast<Node>(it); |
|
| 674 |
} |
|
| 675 |
|
|
| 676 |
private: |
|
| 677 |
const BellmanFord* _algorithm; |
|
| 678 |
int _index; |
|
| 679 |
}; |
|
| 680 |
|
|
| 681 |
/// \name Query Functions |
|
| 682 |
/// The result of the Bellman-Ford algorithm can be obtained using these |
|
| 683 |
/// functions.\n |
|
| 684 |
/// Either \ref run() or \ref init() should be called before using them. |
|
| 685 |
|
|
| 686 |
///@{
|
|
| 687 |
|
|
| 688 |
/// \brief The shortest path to the given node. |
|
| 689 |
/// |
|
| 690 |
/// Gives back the shortest path to the given node from the root(s). |
|
| 691 |
/// |
|
| 692 |
/// \warning \c t should be reached from the root(s). |
|
| 693 |
/// |
|
| 694 |
/// \pre Either \ref run() or \ref init() must be called before |
|
| 695 |
/// using this function. |
|
| 696 |
Path path(Node t) const |
|
| 697 |
{
|
|
| 698 |
return Path(*_gr, *_pred, t); |
|
| 699 |
} |
|
| 700 |
|
|
| 701 |
/// \brief The distance of the given node from the root(s). |
|
| 702 |
/// |
|
| 703 |
/// Returns the distance of the given node from the root(s). |
|
| 704 |
/// |
|
| 705 |
/// \warning If node \c v is not reached from the root(s), then |
|
| 706 |
/// the return value of this function is undefined. |
|
| 707 |
/// |
|
| 708 |
/// \pre Either \ref run() or \ref init() must be called before |
|
| 709 |
/// using this function. |
|
| 710 |
Value dist(Node v) const { return (*_dist)[v]; }
|
|
| 711 |
|
|
| 712 |
/// \brief Returns the 'previous arc' of the shortest path tree for |
|
| 713 |
/// the given node. |
|
| 714 |
/// |
|
| 715 |
/// This function returns the 'previous arc' of the shortest path |
|
| 716 |
/// tree for node \c v, i.e. it returns the last arc of a |
|
| 717 |
/// shortest path from a root to \c v. It is \c INVALID if \c v |
|
| 718 |
/// is not reached from the root(s) or if \c v is a root. |
|
| 719 |
/// |
|
| 720 |
/// The shortest path tree used here is equal to the shortest path |
|
| 721 |
/// tree used in \ref predNode() and \predMap(). |
|
| 722 |
/// |
|
| 723 |
/// \pre Either \ref run() or \ref init() must be called before |
|
| 724 |
/// using this function. |
|
| 725 |
Arc predArc(Node v) const { return (*_pred)[v]; }
|
|
| 726 |
|
|
| 727 |
/// \brief Returns the 'previous node' of the shortest path tree for |
|
| 728 |
/// the given node. |
|
| 729 |
/// |
|
| 730 |
/// This function returns the 'previous node' of the shortest path |
|
| 731 |
/// tree for node \c v, i.e. it returns the last but one node of |
|
| 732 |
/// a shortest path from a root to \c v. It is \c INVALID if \c v |
|
| 733 |
/// is not reached from the root(s) or if \c v is a root. |
|
| 734 |
/// |
|
| 735 |
/// The shortest path tree used here is equal to the shortest path |
|
| 736 |
/// tree used in \ref predArc() and \predMap(). |
|
| 737 |
/// |
|
| 738 |
/// \pre Either \ref run() or \ref init() must be called before |
|
| 739 |
/// using this function. |
|
| 740 |
Node predNode(Node v) const {
|
|
| 741 |
return (*_pred)[v] == INVALID ? INVALID : _gr->source((*_pred)[v]); |
|
| 742 |
} |
|
| 743 |
|
|
| 744 |
/// \brief Returns a const reference to the node map that stores the |
|
| 745 |
/// distances of the nodes. |
|
| 746 |
/// |
|
| 747 |
/// Returns a const reference to the node map that stores the distances |
|
| 748 |
/// of the nodes calculated by the algorithm. |
|
| 749 |
/// |
|
| 750 |
/// \pre Either \ref run() or \ref init() must be called before |
|
| 751 |
/// using this function. |
|
| 752 |
const DistMap &distMap() const { return *_dist;}
|
|
| 753 |
|
|
| 754 |
/// \brief Returns a const reference to the node map that stores the |
|
| 755 |
/// predecessor arcs. |
|
| 756 |
/// |
|
| 757 |
/// Returns a const reference to the node map that stores the predecessor |
|
| 758 |
/// arcs, which form the shortest path tree (forest). |
|
| 759 |
/// |
|
| 760 |
/// \pre Either \ref run() or \ref init() must be called before |
|
| 761 |
/// using this function. |
|
| 762 |
const PredMap &predMap() const { return *_pred; }
|
|
| 763 |
|
|
| 764 |
/// \brief Checks if a node is reached from the root(s). |
|
| 765 |
/// |
|
| 766 |
/// Returns \c true if \c v is reached from the root(s). |
|
| 767 |
/// |
|
| 768 |
/// \pre Either \ref run() or \ref init() must be called before |
|
| 769 |
/// using this function. |
|
| 770 |
bool reached(Node v) const {
|
|
| 771 |
return (*_dist)[v] != OperationTraits::infinity(); |
|
| 772 |
} |
|
| 773 |
|
|
| 774 |
/// \brief Gives back a negative cycle. |
|
| 775 |
/// |
|
| 776 |
/// This function gives back a directed cycle with negative total |
|
| 777 |
/// length if the algorithm has already found one. |
|
| 778 |
/// Otherwise it gives back an empty path. |
|
| 779 |
lemon::Path<Digraph> negativeCycle() const {
|
|
| 780 |
typename Digraph::template NodeMap<int> state(*_gr, -1); |
|
| 781 |
lemon::Path<Digraph> cycle; |
|
| 782 |
for (int i = 0; i < int(_process.size()); ++i) {
|
|
| 783 |
if (state[_process[i]] != -1) continue; |
|
| 784 |
for (Node v = _process[i]; (*_pred)[v] != INVALID; |
|
| 785 |
v = _gr->source((*_pred)[v])) {
|
|
| 786 |
if (state[v] == i) {
|
|
| 787 |
cycle.addFront((*_pred)[v]); |
|
| 788 |
for (Node u = _gr->source((*_pred)[v]); u != v; |
|
| 789 |
u = _gr->source((*_pred)[u])) {
|
|
| 790 |
cycle.addFront((*_pred)[u]); |
|
| 791 |
} |
|
| 792 |
return cycle; |
|
| 793 |
} |
|
| 794 |
else if (state[v] >= 0) {
|
|
| 795 |
break; |
|
| 796 |
} |
|
| 797 |
state[v] = i; |
|
| 798 |
} |
|
| 799 |
} |
|
| 800 |
return cycle; |
|
| 801 |
} |
|
| 802 |
|
|
| 803 |
///@} |
|
| 804 |
}; |
|
| 805 |
|
|
| 806 |
/// \brief Default traits class of bellmanFord() function. |
|
| 807 |
/// |
|
| 808 |
/// Default traits class of bellmanFord() function. |
|
| 809 |
/// \tparam GR The type of the digraph. |
|
| 810 |
/// \tparam LEN The type of the length map. |
|
| 811 |
template <typename GR, typename LEN> |
|
| 812 |
struct BellmanFordWizardDefaultTraits {
|
|
| 813 |
/// The type of the digraph the algorithm runs on. |
|
| 814 |
typedef GR Digraph; |
|
| 815 |
|
|
| 816 |
/// \brief The type of the map that stores the arc lengths. |
|
| 817 |
/// |
|
| 818 |
/// The type of the map that stores the arc lengths. |
|
| 819 |
/// It must meet the \ref concepts::ReadMap "ReadMap" concept. |
|
| 820 |
typedef LEN LengthMap; |
|
| 821 |
|
|
| 822 |
/// The type of the arc lengths. |
|
| 823 |
typedef typename LEN::Value Value; |
|
| 824 |
|
|
| 825 |
/// \brief Operation traits for Bellman-Ford algorithm. |
|
| 826 |
/// |
|
| 827 |
/// It defines the used operations and the infinity value for the |
|
| 828 |
/// given \c Value type. |
|
| 829 |
/// \see BellmanFordDefaultOperationTraits |
|
| 830 |
typedef BellmanFordDefaultOperationTraits<Value> OperationTraits; |
|
| 831 |
|
|
| 832 |
/// \brief The type of the map that stores the last |
|
| 833 |
/// arcs of the shortest paths. |
|
| 834 |
/// |
|
| 835 |
/// The type of the map that stores the last arcs of the shortest paths. |
|
| 836 |
/// It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 837 |
typedef typename GR::template NodeMap<typename GR::Arc> PredMap; |
|
| 838 |
|
|
| 839 |
/// \brief Instantiates a \c PredMap. |
|
| 840 |
/// |
|
| 841 |
/// This function instantiates a \ref PredMap. |
|
| 842 |
/// \param g is the digraph to which we would like to define the |
|
| 843 |
/// \ref PredMap. |
|
| 844 |
static PredMap *createPredMap(const GR &g) {
|
|
| 845 |
return new PredMap(g); |
|
| 846 |
} |
|
| 847 |
|
|
| 848 |
/// \brief The type of the map that stores the distances of the nodes. |
|
| 849 |
/// |
|
| 850 |
/// The type of the map that stores the distances of the nodes. |
|
| 851 |
/// It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 852 |
typedef typename GR::template NodeMap<Value> DistMap; |
|
| 853 |
|
|
| 854 |
/// \brief Instantiates a \c DistMap. |
|
| 855 |
/// |
|
| 856 |
/// This function instantiates a \ref DistMap. |
|
| 857 |
/// \param g is the digraph to which we would like to define the |
|
| 858 |
/// \ref DistMap. |
|
| 859 |
static DistMap *createDistMap(const GR &g) {
|
|
| 860 |
return new DistMap(g); |
|
| 861 |
} |
|
| 862 |
|
|
| 863 |
///The type of the shortest paths. |
|
| 864 |
|
|
| 865 |
///The type of the shortest paths. |
|
| 866 |
///It must meet the \ref concepts::Path "Path" concept. |
|
| 867 |
typedef lemon::Path<Digraph> Path; |
|
| 868 |
}; |
|
| 869 |
|
|
| 870 |
/// \brief Default traits class used by BellmanFordWizard. |
|
| 871 |
/// |
|
| 872 |
/// Default traits class used by BellmanFordWizard. |
|
| 873 |
/// \tparam GR The type of the digraph. |
|
| 874 |
/// \tparam LEN The type of the length map. |
|
| 875 |
template <typename GR, typename LEN> |
|
| 876 |
class BellmanFordWizardBase |
|
| 877 |
: public BellmanFordWizardDefaultTraits<GR, LEN> {
|
|
| 878 |
|
|
| 879 |
typedef BellmanFordWizardDefaultTraits<GR, LEN> Base; |
|
| 880 |
protected: |
|
| 881 |
// Type of the nodes in the digraph. |
|
| 882 |
typedef typename Base::Digraph::Node Node; |
|
| 883 |
|
|
| 884 |
// Pointer to the underlying digraph. |
|
| 885 |
void *_graph; |
|
| 886 |
// Pointer to the length map |
|
| 887 |
void *_length; |
|
| 888 |
// Pointer to the map of predecessors arcs. |
|
| 889 |
void *_pred; |
|
| 890 |
// Pointer to the map of distances. |
|
| 891 |
void *_dist; |
|
| 892 |
//Pointer to the shortest path to the target node. |
|
| 893 |
void *_path; |
|
| 894 |
//Pointer to the distance of the target node. |
|
| 895 |
void *_di; |
|
| 896 |
|
|
| 897 |
public: |
|
| 898 |
/// Constructor. |
|
| 899 |
|
|
| 900 |
/// This constructor does not require parameters, it initiates |
|
| 901 |
/// all of the attributes to default values \c 0. |
|
| 902 |
BellmanFordWizardBase() : |
|
| 903 |
_graph(0), _length(0), _pred(0), _dist(0), _path(0), _di(0) {}
|
|
| 904 |
|
|
| 905 |
/// Constructor. |
|
| 906 |
|
|
| 907 |
/// This constructor requires two parameters, |
|
| 908 |
/// others are initiated to \c 0. |
|
| 909 |
/// \param gr The digraph the algorithm runs on. |
|
| 910 |
/// \param len The length map. |
|
| 911 |
BellmanFordWizardBase(const GR& gr, |
|
| 912 |
const LEN& len) : |
|
| 913 |
_graph(reinterpret_cast<void*>(const_cast<GR*>(&gr))), |
|
| 914 |
_length(reinterpret_cast<void*>(const_cast<LEN*>(&len))), |
|
| 915 |
_pred(0), _dist(0), _path(0), _di(0) {}
|
|
| 916 |
|
|
| 917 |
}; |
|
| 918 |
|
|
| 919 |
/// \brief Auxiliary class for the function-type interface of the |
|
| 920 |
/// \ref BellmanFord "Bellman-Ford" algorithm. |
|
| 921 |
/// |
|
| 922 |
/// This auxiliary class is created to implement the |
|
| 923 |
/// \ref bellmanFord() "function-type interface" of the |
|
| 924 |
/// \ref BellmanFord "Bellman-Ford" algorithm. |
|
| 925 |
/// It does not have own \ref run() method, it uses the |
|
| 926 |
/// functions and features of the plain \ref BellmanFord. |
|
| 927 |
/// |
|
| 928 |
/// This class should only be used through the \ref bellmanFord() |
|
| 929 |
/// function, which makes it easier to use the algorithm. |
|
| 930 |
template<class TR> |
|
| 931 |
class BellmanFordWizard : public TR {
|
|
| 932 |
typedef TR Base; |
|
| 933 |
|
|
| 934 |
typedef typename TR::Digraph Digraph; |
|
| 935 |
|
|
| 936 |
typedef typename Digraph::Node Node; |
|
| 937 |
typedef typename Digraph::NodeIt NodeIt; |
|
| 938 |
typedef typename Digraph::Arc Arc; |
|
| 939 |
typedef typename Digraph::OutArcIt ArcIt; |
|
| 940 |
|
|
| 941 |
typedef typename TR::LengthMap LengthMap; |
|
| 942 |
typedef typename LengthMap::Value Value; |
|
| 943 |
typedef typename TR::PredMap PredMap; |
|
| 944 |
typedef typename TR::DistMap DistMap; |
|
| 945 |
typedef typename TR::Path Path; |
|
| 946 |
|
|
| 947 |
public: |
|
| 948 |
/// Constructor. |
|
| 949 |
BellmanFordWizard() : TR() {}
|
|
| 950 |
|
|
| 951 |
/// \brief Constructor that requires parameters. |
|
| 952 |
/// |
|
| 953 |
/// Constructor that requires parameters. |
|
| 954 |
/// These parameters will be the default values for the traits class. |
|
| 955 |
/// \param gr The digraph the algorithm runs on. |
|
| 956 |
/// \param len The length map. |
|
| 957 |
BellmanFordWizard(const Digraph& gr, const LengthMap& len) |
|
| 958 |
: TR(gr, len) {}
|
|
| 959 |
|
|
| 960 |
/// \brief Copy constructor |
|
| 961 |
BellmanFordWizard(const TR &b) : TR(b) {}
|
|
| 962 |
|
|
| 963 |
~BellmanFordWizard() {}
|
|
| 964 |
|
|
| 965 |
/// \brief Runs the Bellman-Ford algorithm from the given source node. |
|
| 966 |
/// |
|
| 967 |
/// This method runs the Bellman-Ford algorithm from the given source |
|
| 968 |
/// node in order to compute the shortest path to each node. |
|
| 969 |
void run(Node s) {
|
|
| 970 |
BellmanFord<Digraph,LengthMap,TR> |
|
| 971 |
bf(*reinterpret_cast<const Digraph*>(Base::_graph), |
|
| 972 |
*reinterpret_cast<const LengthMap*>(Base::_length)); |
|
| 973 |
if (Base::_pred) bf.predMap(*reinterpret_cast<PredMap*>(Base::_pred)); |
|
| 974 |
if (Base::_dist) bf.distMap(*reinterpret_cast<DistMap*>(Base::_dist)); |
|
| 975 |
bf.run(s); |
|
| 976 |
} |
|
| 977 |
|
|
| 978 |
/// \brief Runs the Bellman-Ford algorithm to find the shortest path |
|
| 979 |
/// between \c s and \c t. |
|
| 980 |
/// |
|
| 981 |
/// This method runs the Bellman-Ford algorithm from node \c s |
|
| 982 |
/// in order to compute the shortest path to node \c t. |
|
| 983 |
/// Actually, it computes the shortest path to each node, but using |
|
| 984 |
/// this function you can retrieve the distance and the shortest path |
|
| 985 |
/// for a single target node easier. |
|
| 986 |
/// |
|
| 987 |
/// \return \c true if \c t is reachable form \c s. |
|
| 988 |
bool run(Node s, Node t) {
|
|
| 989 |
BellmanFord<Digraph,LengthMap,TR> |
|
| 990 |
bf(*reinterpret_cast<const Digraph*>(Base::_graph), |
|
| 991 |
*reinterpret_cast<const LengthMap*>(Base::_length)); |
|
| 992 |
if (Base::_pred) bf.predMap(*reinterpret_cast<PredMap*>(Base::_pred)); |
|
| 993 |
if (Base::_dist) bf.distMap(*reinterpret_cast<DistMap*>(Base::_dist)); |
|
| 994 |
bf.run(s); |
|
| 995 |
if (Base::_path) *reinterpret_cast<Path*>(Base::_path) = bf.path(t); |
|
| 996 |
if (Base::_di) *reinterpret_cast<Value*>(Base::_di) = bf.dist(t); |
|
| 997 |
return bf.reached(t); |
|
| 998 |
} |
|
| 999 |
|
|
| 1000 |
template<class T> |
|
| 1001 |
struct SetPredMapBase : public Base {
|
|
| 1002 |
typedef T PredMap; |
|
| 1003 |
static PredMap *createPredMap(const Digraph &) { return 0; };
|
|
| 1004 |
SetPredMapBase(const TR &b) : TR(b) {}
|
|
| 1005 |
}; |
|
| 1006 |
|
|
| 1007 |
/// \brief \ref named-templ-param "Named parameter" for setting |
|
| 1008 |
/// the predecessor map. |
|
| 1009 |
/// |
|
| 1010 |
/// \ref named-templ-param "Named parameter" for setting |
|
| 1011 |
/// the map that stores the predecessor arcs of the nodes. |
|
| 1012 |
template<class T> |
|
| 1013 |
BellmanFordWizard<SetPredMapBase<T> > predMap(const T &t) {
|
|
| 1014 |
Base::_pred=reinterpret_cast<void*>(const_cast<T*>(&t)); |
|
| 1015 |
return BellmanFordWizard<SetPredMapBase<T> >(*this); |
|
| 1016 |
} |
|
| 1017 |
|
|
| 1018 |
template<class T> |
|
| 1019 |
struct SetDistMapBase : public Base {
|
|
| 1020 |
typedef T DistMap; |
|
| 1021 |
static DistMap *createDistMap(const Digraph &) { return 0; };
|
|
| 1022 |
SetDistMapBase(const TR &b) : TR(b) {}
|
|
| 1023 |
}; |
|
| 1024 |
|
|
| 1025 |
/// \brief \ref named-templ-param "Named parameter" for setting |
|
| 1026 |
/// the distance map. |
|
| 1027 |
/// |
|
| 1028 |
/// \ref named-templ-param "Named parameter" for setting |
|
| 1029 |
/// the map that stores the distances of the nodes calculated |
|
| 1030 |
/// by the algorithm. |
|
| 1031 |
template<class T> |
|
| 1032 |
BellmanFordWizard<SetDistMapBase<T> > distMap(const T &t) {
|
|
| 1033 |
Base::_dist=reinterpret_cast<void*>(const_cast<T*>(&t)); |
|
| 1034 |
return BellmanFordWizard<SetDistMapBase<T> >(*this); |
|
| 1035 |
} |
|
| 1036 |
|
|
| 1037 |
template<class T> |
|
| 1038 |
struct SetPathBase : public Base {
|
|
| 1039 |
typedef T Path; |
|
| 1040 |
SetPathBase(const TR &b) : TR(b) {}
|
|
| 1041 |
}; |
|
| 1042 |
|
|
| 1043 |
/// \brief \ref named-func-param "Named parameter" for getting |
|
| 1044 |
/// the shortest path to the target node. |
|
| 1045 |
/// |
|
| 1046 |
/// \ref named-func-param "Named parameter" for getting |
|
| 1047 |
/// the shortest path to the target node. |
|
| 1048 |
template<class T> |
|
| 1049 |
BellmanFordWizard<SetPathBase<T> > path(const T &t) |
|
| 1050 |
{
|
|
| 1051 |
Base::_path=reinterpret_cast<void*>(const_cast<T*>(&t)); |
|
| 1052 |
return BellmanFordWizard<SetPathBase<T> >(*this); |
|
| 1053 |
} |
|
| 1054 |
|
|
| 1055 |
/// \brief \ref named-func-param "Named parameter" for getting |
|
| 1056 |
/// the distance of the target node. |
|
| 1057 |
/// |
|
| 1058 |
/// \ref named-func-param "Named parameter" for getting |
|
| 1059 |
/// the distance of the target node. |
|
| 1060 |
BellmanFordWizard dist(const Value &d) |
|
| 1061 |
{
|
|
| 1062 |
Base::_di=reinterpret_cast<void*>(const_cast<Value*>(&d)); |
|
| 1063 |
return *this; |
|
| 1064 |
} |
|
| 1065 |
|
|
| 1066 |
}; |
|
| 1067 |
|
|
| 1068 |
/// \brief Function type interface for the \ref BellmanFord "Bellman-Ford" |
|
| 1069 |
/// algorithm. |
|
| 1070 |
/// |
|
| 1071 |
/// \ingroup shortest_path |
|
| 1072 |
/// Function type interface for the \ref BellmanFord "Bellman-Ford" |
|
| 1073 |
/// algorithm. |
|
| 1074 |
/// |
|
| 1075 |
/// This function also has several \ref named-templ-func-param |
|
| 1076 |
/// "named parameters", they are declared as the members of class |
|
| 1077 |
/// \ref BellmanFordWizard. |
|
| 1078 |
/// The following examples show how to use these parameters. |
|
| 1079 |
/// \code |
|
| 1080 |
/// // Compute shortest path from node s to each node |
|
| 1081 |
/// bellmanFord(g,length).predMap(preds).distMap(dists).run(s); |
|
| 1082 |
/// |
|
| 1083 |
/// // Compute shortest path from s to t |
|
| 1084 |
/// bool reached = bellmanFord(g,length).path(p).dist(d).run(s,t); |
|
| 1085 |
/// \endcode |
|
| 1086 |
/// \warning Don't forget to put the \ref BellmanFordWizard::run() "run()" |
|
| 1087 |
/// to the end of the parameter list. |
|
| 1088 |
/// \sa BellmanFordWizard |
|
| 1089 |
/// \sa BellmanFord |
|
| 1090 |
template<typename GR, typename LEN> |
|
| 1091 |
BellmanFordWizard<BellmanFordWizardBase<GR,LEN> > |
|
| 1092 |
bellmanFord(const GR& digraph, |
|
| 1093 |
const LEN& length) |
|
| 1094 |
{
|
|
| 1095 |
return BellmanFordWizard<BellmanFordWizardBase<GR,LEN> >(digraph, length); |
|
| 1096 |
} |
|
| 1097 |
|
|
| 1098 |
} //END OF NAMESPACE LEMON |
|
| 1099 |
|
|
| 1100 |
#endif |
|
| 1101 |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_BINOM_HEAP_H |
|
| 20 |
#define LEMON_BINOM_HEAP_H |
|
| 21 |
|
|
| 22 |
///\file |
|
| 23 |
///\ingroup heaps |
|
| 24 |
///\brief Binomial Heap implementation. |
|
| 25 |
|
|
| 26 |
#include <vector> |
|
| 27 |
#include <utility> |
|
| 28 |
#include <functional> |
|
| 29 |
#include <lemon/math.h> |
|
| 30 |
#include <lemon/counter.h> |
|
| 31 |
|
|
| 32 |
namespace lemon {
|
|
| 33 |
|
|
| 34 |
/// \ingroup heaps |
|
| 35 |
/// |
|
| 36 |
///\brief Binomial heap data structure. |
|
| 37 |
/// |
|
| 38 |
/// This class implements the \e binomial \e heap data structure. |
|
| 39 |
/// It fully conforms to the \ref concepts::Heap "heap concept". |
|
| 40 |
/// |
|
| 41 |
/// The methods \ref increase() and \ref erase() are not efficient |
|
| 42 |
/// in a binomial heap. In case of many calls of these operations, |
|
| 43 |
/// it is better to use other heap structure, e.g. \ref BinHeap |
|
| 44 |
/// "binary heap". |
|
| 45 |
/// |
|
| 46 |
/// \tparam PR Type of the priorities of the items. |
|
| 47 |
/// \tparam IM A read-writable item map with \c int values, used |
|
| 48 |
/// internally to handle the cross references. |
|
| 49 |
/// \tparam CMP A functor class for comparing the priorities. |
|
| 50 |
/// The default is \c std::less<PR>. |
|
| 51 |
#ifdef DOXYGEN |
|
| 52 |
template <typename PR, typename IM, typename CMP> |
|
| 53 |
#else |
|
| 54 |
template <typename PR, typename IM, typename CMP = std::less<PR> > |
|
| 55 |
#endif |
|
| 56 |
class BinomHeap {
|
|
| 57 |
public: |
|
| 58 |
/// Type of the item-int map. |
|
| 59 |
typedef IM ItemIntMap; |
|
| 60 |
/// Type of the priorities. |
|
| 61 |
typedef PR Prio; |
|
| 62 |
/// Type of the items stored in the heap. |
|
| 63 |
typedef typename ItemIntMap::Key Item; |
|
| 64 |
/// Functor type for comparing the priorities. |
|
| 65 |
typedef CMP Compare; |
|
| 66 |
|
|
| 67 |
/// \brief Type to represent the states of the items. |
|
| 68 |
/// |
|
| 69 |
/// Each item has a state associated to it. It can be "in heap", |
|
| 70 |
/// "pre-heap" or "post-heap". The latter two are indifferent from the |
|
| 71 |
/// heap's point of view, but may be useful to the user. |
|
| 72 |
/// |
|
| 73 |
/// The item-int map must be initialized in such way that it assigns |
|
| 74 |
/// \c PRE_HEAP (<tt>-1</tt>) to any element to be put in the heap. |
|
| 75 |
enum State {
|
|
| 76 |
IN_HEAP = 0, ///< = 0. |
|
| 77 |
PRE_HEAP = -1, ///< = -1. |
|
| 78 |
POST_HEAP = -2 ///< = -2. |
|
| 79 |
}; |
|
| 80 |
|
|
| 81 |
private: |
|
| 82 |
class Store; |
|
| 83 |
|
|
| 84 |
std::vector<Store> _data; |
|
| 85 |
int _min, _head; |
|
| 86 |
ItemIntMap &_iim; |
|
| 87 |
Compare _comp; |
|
| 88 |
int _num_items; |
|
| 89 |
|
|
| 90 |
public: |
|
| 91 |
/// \brief Constructor. |
|
| 92 |
/// |
|
| 93 |
/// Constructor. |
|
| 94 |
/// \param map A map that assigns \c int values to the items. |
|
| 95 |
/// It is used internally to handle the cross references. |
|
| 96 |
/// The assigned value must be \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 97 |
explicit BinomHeap(ItemIntMap &map) |
|
| 98 |
: _min(0), _head(-1), _iim(map), _num_items(0) {}
|
|
| 99 |
|
|
| 100 |
/// \brief Constructor. |
|
| 101 |
/// |
|
| 102 |
/// Constructor. |
|
| 103 |
/// \param map A map that assigns \c int values to the items. |
|
| 104 |
/// It is used internally to handle the cross references. |
|
| 105 |
/// The assigned value must be \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 106 |
/// \param comp The function object used for comparing the priorities. |
|
| 107 |
BinomHeap(ItemIntMap &map, const Compare &comp) |
|
| 108 |
: _min(0), _head(-1), _iim(map), _comp(comp), _num_items(0) {}
|
|
| 109 |
|
|
| 110 |
/// \brief The number of items stored in the heap. |
|
| 111 |
/// |
|
| 112 |
/// This function returns the number of items stored in the heap. |
|
| 113 |
int size() const { return _num_items; }
|
|
| 114 |
|
|
| 115 |
/// \brief Check if the heap is empty. |
|
| 116 |
/// |
|
| 117 |
/// This function returns \c true if the heap is empty. |
|
| 118 |
bool empty() const { return _num_items==0; }
|
|
| 119 |
|
|
| 120 |
/// \brief Make the heap empty. |
|
| 121 |
/// |
|
| 122 |
/// This functon makes the heap empty. |
|
| 123 |
/// It does not change the cross reference map. If you want to reuse |
|
| 124 |
/// a heap that is not surely empty, you should first clear it and |
|
| 125 |
/// then you should set the cross reference map to \c PRE_HEAP |
|
| 126 |
/// for each item. |
|
| 127 |
void clear() {
|
|
| 128 |
_data.clear(); _min=0; _num_items=0; _head=-1; |
|
| 129 |
} |
|
| 130 |
|
|
| 131 |
/// \brief Set the priority of an item or insert it, if it is |
|
| 132 |
/// not stored in the heap. |
|
| 133 |
/// |
|
| 134 |
/// This method sets the priority of the given item if it is |
|
| 135 |
/// already stored in the heap. Otherwise it inserts the given |
|
| 136 |
/// item into the heap with the given priority. |
|
| 137 |
/// \param item The item. |
|
| 138 |
/// \param value The priority. |
|
| 139 |
void set (const Item& item, const Prio& value) {
|
|
| 140 |
int i=_iim[item]; |
|
| 141 |
if ( i >= 0 && _data[i].in ) {
|
|
| 142 |
if ( _comp(value, _data[i].prio) ) decrease(item, value); |
|
| 143 |
if ( _comp(_data[i].prio, value) ) increase(item, value); |
|
| 144 |
} else push(item, value); |
|
| 145 |
} |
|
| 146 |
|
|
| 147 |
/// \brief Insert an item into the heap with the given priority. |
|
| 148 |
/// |
|
| 149 |
/// This function inserts the given item into the heap with the |
|
| 150 |
/// given priority. |
|
| 151 |
/// \param item The item to insert. |
|
| 152 |
/// \param value The priority of the item. |
|
| 153 |
/// \pre \e item must not be stored in the heap. |
|
| 154 |
void push (const Item& item, const Prio& value) {
|
|
| 155 |
int i=_iim[item]; |
|
| 156 |
if ( i<0 ) {
|
|
| 157 |
int s=_data.size(); |
|
| 158 |
_iim.set( item,s ); |
|
| 159 |
Store st; |
|
| 160 |
st.name=item; |
|
| 161 |
st.prio=value; |
|
| 162 |
_data.push_back(st); |
|
| 163 |
i=s; |
|
| 164 |
} |
|
| 165 |
else {
|
|
| 166 |
_data[i].parent=_data[i].right_neighbor=_data[i].child=-1; |
|
| 167 |
_data[i].degree=0; |
|
| 168 |
_data[i].in=true; |
|
| 169 |
_data[i].prio=value; |
|
| 170 |
} |
|
| 171 |
|
|
| 172 |
if( 0==_num_items ) {
|
|
| 173 |
_head=i; |
|
| 174 |
_min=i; |
|
| 175 |
} else {
|
|
| 176 |
merge(i); |
|
| 177 |
if( _comp(_data[i].prio, _data[_min].prio) ) _min=i; |
|
| 178 |
} |
|
| 179 |
++_num_items; |
|
| 180 |
} |
|
| 181 |
|
|
| 182 |
/// \brief Return the item having minimum priority. |
|
| 183 |
/// |
|
| 184 |
/// This function returns the item having minimum priority. |
|
| 185 |
/// \pre The heap must be non-empty. |
|
| 186 |
Item top() const { return _data[_min].name; }
|
|
| 187 |
|
|
| 188 |
/// \brief The minimum priority. |
|
| 189 |
/// |
|
| 190 |
/// This function returns the minimum priority. |
|
| 191 |
/// \pre The heap must be non-empty. |
|
| 192 |
Prio prio() const { return _data[_min].prio; }
|
|
| 193 |
|
|
| 194 |
/// \brief The priority of the given item. |
|
| 195 |
/// |
|
| 196 |
/// This function returns the priority of the given item. |
|
| 197 |
/// \param item The item. |
|
| 198 |
/// \pre \e item must be in the heap. |
|
| 199 |
const Prio& operator[](const Item& item) const {
|
|
| 200 |
return _data[_iim[item]].prio; |
|
| 201 |
} |
|
| 202 |
|
|
| 203 |
/// \brief Remove the item having minimum priority. |
|
| 204 |
/// |
|
| 205 |
/// This function removes the item having minimum priority. |
|
| 206 |
/// \pre The heap must be non-empty. |
|
| 207 |
void pop() {
|
|
| 208 |
_data[_min].in=false; |
|
| 209 |
|
|
| 210 |
int head_child=-1; |
|
| 211 |
if ( _data[_min].child!=-1 ) {
|
|
| 212 |
int child=_data[_min].child; |
|
| 213 |
int neighb; |
|
| 214 |
while( child!=-1 ) {
|
|
| 215 |
neighb=_data[child].right_neighbor; |
|
| 216 |
_data[child].parent=-1; |
|
| 217 |
_data[child].right_neighbor=head_child; |
|
| 218 |
head_child=child; |
|
| 219 |
child=neighb; |
|
| 220 |
} |
|
| 221 |
} |
|
| 222 |
|
|
| 223 |
if ( _data[_head].right_neighbor==-1 ) {
|
|
| 224 |
// there was only one root |
|
| 225 |
_head=head_child; |
|
| 226 |
} |
|
| 227 |
else {
|
|
| 228 |
// there were more roots |
|
| 229 |
if( _head!=_min ) { unlace(_min); }
|
|
| 230 |
else { _head=_data[_head].right_neighbor; }
|
|
| 231 |
merge(head_child); |
|
| 232 |
} |
|
| 233 |
_min=findMin(); |
|
| 234 |
--_num_items; |
|
| 235 |
} |
|
| 236 |
|
|
| 237 |
/// \brief Remove the given item from the heap. |
|
| 238 |
/// |
|
| 239 |
/// This function removes the given item from the heap if it is |
|
| 240 |
/// already stored. |
|
| 241 |
/// \param item The item to delete. |
|
| 242 |
/// \pre \e item must be in the heap. |
|
| 243 |
void erase (const Item& item) {
|
|
| 244 |
int i=_iim[item]; |
|
| 245 |
if ( i >= 0 && _data[i].in ) {
|
|
| 246 |
decrease( item, _data[_min].prio-1 ); |
|
| 247 |
pop(); |
|
| 248 |
} |
|
| 249 |
} |
|
| 250 |
|
|
| 251 |
/// \brief Decrease the priority of an item to the given value. |
|
| 252 |
/// |
|
| 253 |
/// This function decreases the priority of an item to the given value. |
|
| 254 |
/// \param item The item. |
|
| 255 |
/// \param value The priority. |
|
| 256 |
/// \pre \e item must be stored in the heap with priority at least \e value. |
|
| 257 |
void decrease (Item item, const Prio& value) {
|
|
| 258 |
int i=_iim[item]; |
|
| 259 |
int p=_data[i].parent; |
|
| 260 |
_data[i].prio=value; |
|
| 261 |
|
|
| 262 |
while( p!=-1 && _comp(value, _data[p].prio) ) {
|
|
| 263 |
_data[i].name=_data[p].name; |
|
| 264 |
_data[i].prio=_data[p].prio; |
|
| 265 |
_data[p].name=item; |
|
| 266 |
_data[p].prio=value; |
|
| 267 |
_iim[_data[i].name]=i; |
|
| 268 |
i=p; |
|
| 269 |
p=_data[p].parent; |
|
| 270 |
} |
|
| 271 |
_iim[item]=i; |
|
| 272 |
if ( _comp(value, _data[_min].prio) ) _min=i; |
|
| 273 |
} |
|
| 274 |
|
|
| 275 |
/// \brief Increase the priority of an item to the given value. |
|
| 276 |
/// |
|
| 277 |
/// This function increases the priority of an item to the given value. |
|
| 278 |
/// \param item The item. |
|
| 279 |
/// \param value The priority. |
|
| 280 |
/// \pre \e item must be stored in the heap with priority at most \e value. |
|
| 281 |
void increase (Item item, const Prio& value) {
|
|
| 282 |
erase(item); |
|
| 283 |
push(item, value); |
|
| 284 |
} |
|
| 285 |
|
|
| 286 |
/// \brief Return the state of an item. |
|
| 287 |
/// |
|
| 288 |
/// This method returns \c PRE_HEAP if the given item has never |
|
| 289 |
/// been in the heap, \c IN_HEAP if it is in the heap at the moment, |
|
| 290 |
/// and \c POST_HEAP otherwise. |
|
| 291 |
/// In the latter case it is possible that the item will get back |
|
| 292 |
/// to the heap again. |
|
| 293 |
/// \param item The item. |
|
| 294 |
State state(const Item &item) const {
|
|
| 295 |
int i=_iim[item]; |
|
| 296 |
if( i>=0 ) {
|
|
| 297 |
if ( _data[i].in ) i=0; |
|
| 298 |
else i=-2; |
|
| 299 |
} |
|
| 300 |
return State(i); |
|
| 301 |
} |
|
| 302 |
|
|
| 303 |
/// \brief Set the state of an item in the heap. |
|
| 304 |
/// |
|
| 305 |
/// This function sets the state of the given item in the heap. |
|
| 306 |
/// It can be used to manually clear the heap when it is important |
|
| 307 |
/// to achive better time complexity. |
|
| 308 |
/// \param i The item. |
|
| 309 |
/// \param st The state. It should not be \c IN_HEAP. |
|
| 310 |
void state(const Item& i, State st) {
|
|
| 311 |
switch (st) {
|
|
| 312 |
case POST_HEAP: |
|
| 313 |
case PRE_HEAP: |
|
| 314 |
if (state(i) == IN_HEAP) {
|
|
| 315 |
erase(i); |
|
| 316 |
} |
|
| 317 |
_iim[i] = st; |
|
| 318 |
break; |
|
| 319 |
case IN_HEAP: |
|
| 320 |
break; |
|
| 321 |
} |
|
| 322 |
} |
|
| 323 |
|
|
| 324 |
private: |
|
| 325 |
|
|
| 326 |
// Find the minimum of the roots |
|
| 327 |
int findMin() {
|
|
| 328 |
if( _head!=-1 ) {
|
|
| 329 |
int min_loc=_head, min_val=_data[_head].prio; |
|
| 330 |
for( int x=_data[_head].right_neighbor; x!=-1; |
|
| 331 |
x=_data[x].right_neighbor ) {
|
|
| 332 |
if( _comp( _data[x].prio,min_val ) ) {
|
|
| 333 |
min_val=_data[x].prio; |
|
| 334 |
min_loc=x; |
|
| 335 |
} |
|
| 336 |
} |
|
| 337 |
return min_loc; |
|
| 338 |
} |
|
| 339 |
else return -1; |
|
| 340 |
} |
|
| 341 |
|
|
| 342 |
// Merge the heap with another heap starting at the given position |
|
| 343 |
void merge(int a) {
|
|
| 344 |
if( _head==-1 || a==-1 ) return; |
|
| 345 |
if( _data[a].right_neighbor==-1 && |
|
| 346 |
_data[a].degree<=_data[_head].degree ) {
|
|
| 347 |
_data[a].right_neighbor=_head; |
|
| 348 |
_head=a; |
|
| 349 |
} else {
|
|
| 350 |
interleave(a); |
|
| 351 |
} |
|
| 352 |
if( _data[_head].right_neighbor==-1 ) return; |
|
| 353 |
|
|
| 354 |
int x=_head; |
|
| 355 |
int x_prev=-1, x_next=_data[x].right_neighbor; |
|
| 356 |
while( x_next!=-1 ) {
|
|
| 357 |
if( _data[x].degree!=_data[x_next].degree || |
|
| 358 |
( _data[x_next].right_neighbor!=-1 && |
|
| 359 |
_data[_data[x_next].right_neighbor].degree==_data[x].degree ) ) {
|
|
| 360 |
x_prev=x; |
|
| 361 |
x=x_next; |
|
| 362 |
} |
|
| 363 |
else {
|
|
| 364 |
if( _comp(_data[x_next].prio,_data[x].prio) ) {
|
|
| 365 |
if( x_prev==-1 ) {
|
|
| 366 |
_head=x_next; |
|
| 367 |
} else {
|
|
| 368 |
_data[x_prev].right_neighbor=x_next; |
|
| 369 |
} |
|
| 370 |
fuse(x,x_next); |
|
| 371 |
x=x_next; |
|
| 372 |
} |
|
| 373 |
else {
|
|
| 374 |
_data[x].right_neighbor=_data[x_next].right_neighbor; |
|
| 375 |
fuse(x_next,x); |
|
| 376 |
} |
|
| 377 |
} |
|
| 378 |
x_next=_data[x].right_neighbor; |
|
| 379 |
} |
|
| 380 |
} |
|
| 381 |
|
|
| 382 |
// Interleave the elements of the given list into the list of the roots |
|
| 383 |
void interleave(int a) {
|
|
| 384 |
int p=_head, q=a; |
|
| 385 |
int curr=_data.size(); |
|
| 386 |
_data.push_back(Store()); |
|
| 387 |
|
|
| 388 |
while( p!=-1 || q!=-1 ) {
|
|
| 389 |
if( q==-1 || ( p!=-1 && _data[p].degree<_data[q].degree ) ) {
|
|
| 390 |
_data[curr].right_neighbor=p; |
|
| 391 |
curr=p; |
|
| 392 |
p=_data[p].right_neighbor; |
|
| 393 |
} |
|
| 394 |
else {
|
|
| 395 |
_data[curr].right_neighbor=q; |
|
| 396 |
curr=q; |
|
| 397 |
q=_data[q].right_neighbor; |
|
| 398 |
} |
|
| 399 |
} |
|
| 400 |
|
|
| 401 |
_head=_data.back().right_neighbor; |
|
| 402 |
_data.pop_back(); |
|
| 403 |
} |
|
| 404 |
|
|
| 405 |
// Lace node a under node b |
|
| 406 |
void fuse(int a, int b) {
|
|
| 407 |
_data[a].parent=b; |
|
| 408 |
_data[a].right_neighbor=_data[b].child; |
|
| 409 |
_data[b].child=a; |
|
| 410 |
|
|
| 411 |
++_data[b].degree; |
|
| 412 |
} |
|
| 413 |
|
|
| 414 |
// Unlace node a (if it has siblings) |
|
| 415 |
void unlace(int a) {
|
|
| 416 |
int neighb=_data[a].right_neighbor; |
|
| 417 |
int other=_head; |
|
| 418 |
|
|
| 419 |
while( _data[other].right_neighbor!=a ) |
|
| 420 |
other=_data[other].right_neighbor; |
|
| 421 |
_data[other].right_neighbor=neighb; |
|
| 422 |
} |
|
| 423 |
|
|
| 424 |
private: |
|
| 425 |
|
|
| 426 |
class Store {
|
|
| 427 |
friend class BinomHeap; |
|
| 428 |
|
|
| 429 |
Item name; |
|
| 430 |
int parent; |
|
| 431 |
int right_neighbor; |
|
| 432 |
int child; |
|
| 433 |
int degree; |
|
| 434 |
bool in; |
|
| 435 |
Prio prio; |
|
| 436 |
|
|
| 437 |
Store() : parent(-1), right_neighbor(-1), child(-1), degree(0), |
|
| 438 |
in(true) {}
|
|
| 439 |
}; |
|
| 440 |
}; |
|
| 441 |
|
|
| 442 |
} //namespace lemon |
|
| 443 |
|
|
| 444 |
#endif //LEMON_BINOM_HEAP_H |
|
| 445 |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
///\file |
|
| 20 |
///\brief Some basic non-inline functions and static global data. |
|
| 21 |
|
|
| 22 |
#include<lemon/bits/windows.h> |
|
| 23 |
|
|
| 24 |
#ifdef WIN32 |
|
| 25 |
#ifndef WIN32_LEAN_AND_MEAN |
|
| 26 |
#define WIN32_LEAN_AND_MEAN |
|
| 27 |
#endif |
|
| 28 |
#ifndef NOMINMAX |
|
| 29 |
#define NOMINMAX |
|
| 30 |
#endif |
|
| 31 |
#ifdef UNICODE |
|
| 32 |
#undef UNICODE |
|
| 33 |
#endif |
|
| 34 |
#include <windows.h> |
|
| 35 |
#ifdef LOCALE_INVARIANT |
|
| 36 |
#define MY_LOCALE LOCALE_INVARIANT |
|
| 37 |
#else |
|
| 38 |
#define MY_LOCALE LOCALE_NEUTRAL |
|
| 39 |
#endif |
|
| 40 |
#else |
|
| 41 |
#include <unistd.h> |
|
| 42 |
#include <ctime> |
|
| 43 |
#include <sys/times.h> |
|
| 44 |
#include <sys/time.h> |
|
| 45 |
#endif |
|
| 46 |
|
|
| 47 |
#include <cmath> |
|
| 48 |
#include <sstream> |
|
| 49 |
|
|
| 50 |
namespace lemon {
|
|
| 51 |
namespace bits {
|
|
| 52 |
void getWinProcTimes(double &rtime, |
|
| 53 |
double &utime, double &stime, |
|
| 54 |
double &cutime, double &cstime) |
|
| 55 |
{
|
|
| 56 |
#ifdef WIN32 |
|
| 57 |
static const double ch = 4294967296.0e-7; |
|
| 58 |
static const double cl = 1.0e-7; |
|
| 59 |
|
|
| 60 |
FILETIME system; |
|
| 61 |
GetSystemTimeAsFileTime(&system); |
|
| 62 |
rtime = ch * system.dwHighDateTime + cl * system.dwLowDateTime; |
|
| 63 |
|
|
| 64 |
FILETIME create, exit, kernel, user; |
|
| 65 |
if (GetProcessTimes(GetCurrentProcess(),&create, &exit, &kernel, &user)) {
|
|
| 66 |
utime = ch * user.dwHighDateTime + cl * user.dwLowDateTime; |
|
| 67 |
stime = ch * kernel.dwHighDateTime + cl * kernel.dwLowDateTime; |
|
| 68 |
cutime = 0; |
|
| 69 |
cstime = 0; |
|
| 70 |
} else {
|
|
| 71 |
rtime = 0; |
|
| 72 |
utime = 0; |
|
| 73 |
stime = 0; |
|
| 74 |
cutime = 0; |
|
| 75 |
cstime = 0; |
|
| 76 |
} |
|
| 77 |
#else |
|
| 78 |
timeval tv; |
|
| 79 |
gettimeofday(&tv, 0); |
|
| 80 |
rtime=tv.tv_sec+double(tv.tv_usec)/1e6; |
|
| 81 |
|
|
| 82 |
tms ts; |
|
| 83 |
double tck=sysconf(_SC_CLK_TCK); |
|
| 84 |
times(&ts); |
|
| 85 |
utime=ts.tms_utime/tck; |
|
| 86 |
stime=ts.tms_stime/tck; |
|
| 87 |
cutime=ts.tms_cutime/tck; |
|
| 88 |
cstime=ts.tms_cstime/tck; |
|
| 89 |
#endif |
|
| 90 |
} |
|
| 91 |
|
|
| 92 |
std::string getWinFormattedDate() |
|
| 93 |
{
|
|
| 94 |
std::ostringstream os; |
|
| 95 |
#ifdef WIN32 |
|
| 96 |
SYSTEMTIME time; |
|
| 97 |
GetSystemTime(&time); |
|
| 98 |
char buf1[11], buf2[9], buf3[5]; |
|
| 99 |
if (GetDateFormat(MY_LOCALE, 0, &time, |
|
| 100 |
("ddd MMM dd"), buf1, 11) &&
|
|
| 101 |
GetTimeFormat(MY_LOCALE, 0, &time, |
|
| 102 |
("HH':'mm':'ss"), buf2, 9) &&
|
|
| 103 |
GetDateFormat(MY_LOCALE, 0, &time, |
|
| 104 |
("yyyy"), buf3, 5)) {
|
|
| 105 |
os << buf1 << ' ' << buf2 << ' ' << buf3; |
|
| 106 |
} |
|
| 107 |
else os << "unknown"; |
|
| 108 |
#else |
|
| 109 |
timeval tv; |
|
| 110 |
gettimeofday(&tv, 0); |
|
| 111 |
|
|
| 112 |
char cbuf[26]; |
|
| 113 |
ctime_r(&tv.tv_sec,cbuf); |
|
| 114 |
os << cbuf; |
|
| 115 |
#endif |
|
| 116 |
return os.str(); |
|
| 117 |
} |
|
| 118 |
|
|
| 119 |
int getWinRndSeed() |
|
| 120 |
{
|
|
| 121 |
#ifdef WIN32 |
|
| 122 |
FILETIME time; |
|
| 123 |
GetSystemTimeAsFileTime(&time); |
|
| 124 |
return GetCurrentProcessId() + time.dwHighDateTime + time.dwLowDateTime; |
|
| 125 |
#else |
|
| 126 |
timeval tv; |
|
| 127 |
gettimeofday(&tv, 0); |
|
| 128 |
return getpid() + tv.tv_sec + tv.tv_usec; |
|
| 129 |
#endif |
|
| 130 |
} |
|
| 131 |
} |
|
| 132 |
} |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_BITS_WINDOWS_H |
|
| 20 |
#define LEMON_BITS_WINDOWS_H |
|
| 21 |
|
|
| 22 |
#include <string> |
|
| 23 |
|
|
| 24 |
namespace lemon {
|
|
| 25 |
namespace bits {
|
|
| 26 |
void getWinProcTimes(double &rtime, |
|
| 27 |
double &utime, double &stime, |
|
| 28 |
double &cutime, double &cstime); |
|
| 29 |
std::string getWinFormattedDate(); |
|
| 30 |
int getWinRndSeed(); |
|
| 31 |
} |
|
| 32 |
} |
|
| 33 |
|
|
| 34 |
#endif |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_BUCKET_HEAP_H |
|
| 20 |
#define LEMON_BUCKET_HEAP_H |
|
| 21 |
|
|
| 22 |
///\ingroup heaps |
|
| 23 |
///\file |
|
| 24 |
///\brief Bucket heap implementation. |
|
| 25 |
|
|
| 26 |
#include <vector> |
|
| 27 |
#include <utility> |
|
| 28 |
#include <functional> |
|
| 29 |
|
|
| 30 |
namespace lemon {
|
|
| 31 |
|
|
| 32 |
namespace _bucket_heap_bits {
|
|
| 33 |
|
|
| 34 |
template <bool MIN> |
|
| 35 |
struct DirectionTraits {
|
|
| 36 |
static bool less(int left, int right) {
|
|
| 37 |
return left < right; |
|
| 38 |
} |
|
| 39 |
static void increase(int& value) {
|
|
| 40 |
++value; |
|
| 41 |
} |
|
| 42 |
}; |
|
| 43 |
|
|
| 44 |
template <> |
|
| 45 |
struct DirectionTraits<false> {
|
|
| 46 |
static bool less(int left, int right) {
|
|
| 47 |
return left > right; |
|
| 48 |
} |
|
| 49 |
static void increase(int& value) {
|
|
| 50 |
--value; |
|
| 51 |
} |
|
| 52 |
}; |
|
| 53 |
|
|
| 54 |
} |
|
| 55 |
|
|
| 56 |
/// \ingroup heaps |
|
| 57 |
/// |
|
| 58 |
/// \brief Bucket heap data structure. |
|
| 59 |
/// |
|
| 60 |
/// This class implements the \e bucket \e heap data structure. |
|
| 61 |
/// It practically conforms to the \ref concepts::Heap "heap concept", |
|
| 62 |
/// but it has some limitations. |
|
| 63 |
/// |
|
| 64 |
/// The bucket heap is a very simple structure. It can store only |
|
| 65 |
/// \c int priorities and it maintains a list of items for each priority |
|
| 66 |
/// in the range <tt>[0..C)</tt>. So it should only be used when the |
|
| 67 |
/// priorities are small. It is not intended to use as a Dijkstra heap. |
|
| 68 |
/// |
|
| 69 |
/// \tparam IM A read-writable item map with \c int values, used |
|
| 70 |
/// internally to handle the cross references. |
|
| 71 |
/// \tparam MIN Indicate if the heap is a \e min-heap or a \e max-heap. |
|
| 72 |
/// The default is \e min-heap. If this parameter is set to \c false, |
|
| 73 |
/// then the comparison is reversed, so the top(), prio() and pop() |
|
| 74 |
/// functions deal with the item having maximum priority instead of the |
|
| 75 |
/// minimum. |
|
| 76 |
/// |
|
| 77 |
/// \sa SimpleBucketHeap |
|
| 78 |
template <typename IM, bool MIN = true> |
|
| 79 |
class BucketHeap {
|
|
| 80 |
|
|
| 81 |
public: |
|
| 82 |
|
|
| 83 |
/// Type of the item-int map. |
|
| 84 |
typedef IM ItemIntMap; |
|
| 85 |
/// Type of the priorities. |
|
| 86 |
typedef int Prio; |
|
| 87 |
/// Type of the items stored in the heap. |
|
| 88 |
typedef typename ItemIntMap::Key Item; |
|
| 89 |
/// Type of the item-priority pairs. |
|
| 90 |
typedef std::pair<Item,Prio> Pair; |
|
| 91 |
|
|
| 92 |
private: |
|
| 93 |
|
|
| 94 |
typedef _bucket_heap_bits::DirectionTraits<MIN> Direction; |
|
| 95 |
|
|
| 96 |
public: |
|
| 97 |
|
|
| 98 |
/// \brief Type to represent the states of the items. |
|
| 99 |
/// |
|
| 100 |
/// Each item has a state associated to it. It can be "in heap", |
|
| 101 |
/// "pre-heap" or "post-heap". The latter two are indifferent from the |
|
| 102 |
/// heap's point of view, but may be useful to the user. |
|
| 103 |
/// |
|
| 104 |
/// The item-int map must be initialized in such way that it assigns |
|
| 105 |
/// \c PRE_HEAP (<tt>-1</tt>) to any element to be put in the heap. |
|
| 106 |
enum State {
|
|
| 107 |
IN_HEAP = 0, ///< = 0. |
|
| 108 |
PRE_HEAP = -1, ///< = -1. |
|
| 109 |
POST_HEAP = -2 ///< = -2. |
|
| 110 |
}; |
|
| 111 |
|
|
| 112 |
public: |
|
| 113 |
|
|
| 114 |
/// \brief Constructor. |
|
| 115 |
/// |
|
| 116 |
/// Constructor. |
|
| 117 |
/// \param map A map that assigns \c int values to the items. |
|
| 118 |
/// It is used internally to handle the cross references. |
|
| 119 |
/// The assigned value must be \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 120 |
explicit BucketHeap(ItemIntMap &map) : _iim(map), _minimum(0) {}
|
|
| 121 |
|
|
| 122 |
/// \brief The number of items stored in the heap. |
|
| 123 |
/// |
|
| 124 |
/// This function returns the number of items stored in the heap. |
|
| 125 |
int size() const { return _data.size(); }
|
|
| 126 |
|
|
| 127 |
/// \brief Check if the heap is empty. |
|
| 128 |
/// |
|
| 129 |
/// This function returns \c true if the heap is empty. |
|
| 130 |
bool empty() const { return _data.empty(); }
|
|
| 131 |
|
|
| 132 |
/// \brief Make the heap empty. |
|
| 133 |
/// |
|
| 134 |
/// This functon makes the heap empty. |
|
| 135 |
/// It does not change the cross reference map. If you want to reuse |
|
| 136 |
/// a heap that is not surely empty, you should first clear it and |
|
| 137 |
/// then you should set the cross reference map to \c PRE_HEAP |
|
| 138 |
/// for each item. |
|
| 139 |
void clear() {
|
|
| 140 |
_data.clear(); _first.clear(); _minimum = 0; |
|
| 141 |
} |
|
| 142 |
|
|
| 143 |
private: |
|
| 144 |
|
|
| 145 |
void relocateLast(int idx) {
|
|
| 146 |
if (idx + 1 < int(_data.size())) {
|
|
| 147 |
_data[idx] = _data.back(); |
|
| 148 |
if (_data[idx].prev != -1) {
|
|
| 149 |
_data[_data[idx].prev].next = idx; |
|
| 150 |
} else {
|
|
| 151 |
_first[_data[idx].value] = idx; |
|
| 152 |
} |
|
| 153 |
if (_data[idx].next != -1) {
|
|
| 154 |
_data[_data[idx].next].prev = idx; |
|
| 155 |
} |
|
| 156 |
_iim[_data[idx].item] = idx; |
|
| 157 |
} |
|
| 158 |
_data.pop_back(); |
|
| 159 |
} |
|
| 160 |
|
|
| 161 |
void unlace(int idx) {
|
|
| 162 |
if (_data[idx].prev != -1) {
|
|
| 163 |
_data[_data[idx].prev].next = _data[idx].next; |
|
| 164 |
} else {
|
|
| 165 |
_first[_data[idx].value] = _data[idx].next; |
|
| 166 |
} |
|
| 167 |
if (_data[idx].next != -1) {
|
|
| 168 |
_data[_data[idx].next].prev = _data[idx].prev; |
|
| 169 |
} |
|
| 170 |
} |
|
| 171 |
|
|
| 172 |
void lace(int idx) {
|
|
| 173 |
if (int(_first.size()) <= _data[idx].value) {
|
|
| 174 |
_first.resize(_data[idx].value + 1, -1); |
|
| 175 |
} |
|
| 176 |
_data[idx].next = _first[_data[idx].value]; |
|
| 177 |
if (_data[idx].next != -1) {
|
|
| 178 |
_data[_data[idx].next].prev = idx; |
|
| 179 |
} |
|
| 180 |
_first[_data[idx].value] = idx; |
|
| 181 |
_data[idx].prev = -1; |
|
| 182 |
} |
|
| 183 |
|
|
| 184 |
public: |
|
| 185 |
|
|
| 186 |
/// \brief Insert a pair of item and priority into the heap. |
|
| 187 |
/// |
|
| 188 |
/// This function inserts \c p.first to the heap with priority |
|
| 189 |
/// \c p.second. |
|
| 190 |
/// \param p The pair to insert. |
|
| 191 |
/// \pre \c p.first must not be stored in the heap. |
|
| 192 |
void push(const Pair& p) {
|
|
| 193 |
push(p.first, p.second); |
|
| 194 |
} |
|
| 195 |
|
|
| 196 |
/// \brief Insert an item into the heap with the given priority. |
|
| 197 |
/// |
|
| 198 |
/// This function inserts the given item into the heap with the |
|
| 199 |
/// given priority. |
|
| 200 |
/// \param i The item to insert. |
|
| 201 |
/// \param p The priority of the item. |
|
| 202 |
/// \pre \e i must not be stored in the heap. |
|
| 203 |
void push(const Item &i, const Prio &p) {
|
|
| 204 |
int idx = _data.size(); |
|
| 205 |
_iim[i] = idx; |
|
| 206 |
_data.push_back(BucketItem(i, p)); |
|
| 207 |
lace(idx); |
|
| 208 |
if (Direction::less(p, _minimum)) {
|
|
| 209 |
_minimum = p; |
|
| 210 |
} |
|
| 211 |
} |
|
| 212 |
|
|
| 213 |
/// \brief Return the item having minimum priority. |
|
| 214 |
/// |
|
| 215 |
/// This function returns the item having minimum priority. |
|
| 216 |
/// \pre The heap must be non-empty. |
|
| 217 |
Item top() const {
|
|
| 218 |
while (_first[_minimum] == -1) {
|
|
| 219 |
Direction::increase(_minimum); |
|
| 220 |
} |
|
| 221 |
return _data[_first[_minimum]].item; |
|
| 222 |
} |
|
| 223 |
|
|
| 224 |
/// \brief The minimum priority. |
|
| 225 |
/// |
|
| 226 |
/// This function returns the minimum priority. |
|
| 227 |
/// \pre The heap must be non-empty. |
|
| 228 |
Prio prio() const {
|
|
| 229 |
while (_first[_minimum] == -1) {
|
|
| 230 |
Direction::increase(_minimum); |
|
| 231 |
} |
|
| 232 |
return _minimum; |
|
| 233 |
} |
|
| 234 |
|
|
| 235 |
/// \brief Remove the item having minimum priority. |
|
| 236 |
/// |
|
| 237 |
/// This function removes the item having minimum priority. |
|
| 238 |
/// \pre The heap must be non-empty. |
|
| 239 |
void pop() {
|
|
| 240 |
while (_first[_minimum] == -1) {
|
|
| 241 |
Direction::increase(_minimum); |
|
| 242 |
} |
|
| 243 |
int idx = _first[_minimum]; |
|
| 244 |
_iim[_data[idx].item] = -2; |
|
| 245 |
unlace(idx); |
|
| 246 |
relocateLast(idx); |
|
| 247 |
} |
|
| 248 |
|
|
| 249 |
/// \brief Remove the given item from the heap. |
|
| 250 |
/// |
|
| 251 |
/// This function removes the given item from the heap if it is |
|
| 252 |
/// already stored. |
|
| 253 |
/// \param i The item to delete. |
|
| 254 |
/// \pre \e i must be in the heap. |
|
| 255 |
void erase(const Item &i) {
|
|
| 256 |
int idx = _iim[i]; |
|
| 257 |
_iim[_data[idx].item] = -2; |
|
| 258 |
unlace(idx); |
|
| 259 |
relocateLast(idx); |
|
| 260 |
} |
|
| 261 |
|
|
| 262 |
/// \brief The priority of the given item. |
|
| 263 |
/// |
|
| 264 |
/// This function returns the priority of the given item. |
|
| 265 |
/// \param i The item. |
|
| 266 |
/// \pre \e i must be in the heap. |
|
| 267 |
Prio operator[](const Item &i) const {
|
|
| 268 |
int idx = _iim[i]; |
|
| 269 |
return _data[idx].value; |
|
| 270 |
} |
|
| 271 |
|
|
| 272 |
/// \brief Set the priority of an item or insert it, if it is |
|
| 273 |
/// not stored in the heap. |
|
| 274 |
/// |
|
| 275 |
/// This method sets the priority of the given item if it is |
|
| 276 |
/// already stored in the heap. Otherwise it inserts the given |
|
| 277 |
/// item into the heap with the given priority. |
|
| 278 |
/// \param i The item. |
|
| 279 |
/// \param p The priority. |
|
| 280 |
void set(const Item &i, const Prio &p) {
|
|
| 281 |
int idx = _iim[i]; |
|
| 282 |
if (idx < 0) {
|
|
| 283 |
push(i, p); |
|
| 284 |
} else if (Direction::less(p, _data[idx].value)) {
|
|
| 285 |
decrease(i, p); |
|
| 286 |
} else {
|
|
| 287 |
increase(i, p); |
|
| 288 |
} |
|
| 289 |
} |
|
| 290 |
|
|
| 291 |
/// \brief Decrease the priority of an item to the given value. |
|
| 292 |
/// |
|
| 293 |
/// This function decreases the priority of an item to the given value. |
|
| 294 |
/// \param i The item. |
|
| 295 |
/// \param p The priority. |
|
| 296 |
/// \pre \e i must be stored in the heap with priority at least \e p. |
|
| 297 |
void decrease(const Item &i, const Prio &p) {
|
|
| 298 |
int idx = _iim[i]; |
|
| 299 |
unlace(idx); |
|
| 300 |
_data[idx].value = p; |
|
| 301 |
if (Direction::less(p, _minimum)) {
|
|
| 302 |
_minimum = p; |
|
| 303 |
} |
|
| 304 |
lace(idx); |
|
| 305 |
} |
|
| 306 |
|
|
| 307 |
/// \brief Increase the priority of an item to the given value. |
|
| 308 |
/// |
|
| 309 |
/// This function increases the priority of an item to the given value. |
|
| 310 |
/// \param i The item. |
|
| 311 |
/// \param p The priority. |
|
| 312 |
/// \pre \e i must be stored in the heap with priority at most \e p. |
|
| 313 |
void increase(const Item &i, const Prio &p) {
|
|
| 314 |
int idx = _iim[i]; |
|
| 315 |
unlace(idx); |
|
| 316 |
_data[idx].value = p; |
|
| 317 |
lace(idx); |
|
| 318 |
} |
|
| 319 |
|
|
| 320 |
/// \brief Return the state of an item. |
|
| 321 |
/// |
|
| 322 |
/// This method returns \c PRE_HEAP if the given item has never |
|
| 323 |
/// been in the heap, \c IN_HEAP if it is in the heap at the moment, |
|
| 324 |
/// and \c POST_HEAP otherwise. |
|
| 325 |
/// In the latter case it is possible that the item will get back |
|
| 326 |
/// to the heap again. |
|
| 327 |
/// \param i The item. |
|
| 328 |
State state(const Item &i) const {
|
|
| 329 |
int idx = _iim[i]; |
|
| 330 |
if (idx >= 0) idx = 0; |
|
| 331 |
return State(idx); |
|
| 332 |
} |
|
| 333 |
|
|
| 334 |
/// \brief Set the state of an item in the heap. |
|
| 335 |
/// |
|
| 336 |
/// This function sets the state of the given item in the heap. |
|
| 337 |
/// It can be used to manually clear the heap when it is important |
|
| 338 |
/// to achive better time complexity. |
|
| 339 |
/// \param i The item. |
|
| 340 |
/// \param st The state. It should not be \c IN_HEAP. |
|
| 341 |
void state(const Item& i, State st) {
|
|
| 342 |
switch (st) {
|
|
| 343 |
case POST_HEAP: |
|
| 344 |
case PRE_HEAP: |
|
| 345 |
if (state(i) == IN_HEAP) {
|
|
| 346 |
erase(i); |
|
| 347 |
} |
|
| 348 |
_iim[i] = st; |
|
| 349 |
break; |
|
| 350 |
case IN_HEAP: |
|
| 351 |
break; |
|
| 352 |
} |
|
| 353 |
} |
|
| 354 |
|
|
| 355 |
private: |
|
| 356 |
|
|
| 357 |
struct BucketItem {
|
|
| 358 |
BucketItem(const Item& _item, int _value) |
|
| 359 |
: item(_item), value(_value) {}
|
|
| 360 |
|
|
| 361 |
Item item; |
|
| 362 |
int value; |
|
| 363 |
|
|
| 364 |
int prev, next; |
|
| 365 |
}; |
|
| 366 |
|
|
| 367 |
ItemIntMap& _iim; |
|
| 368 |
std::vector<int> _first; |
|
| 369 |
std::vector<BucketItem> _data; |
|
| 370 |
mutable int _minimum; |
|
| 371 |
|
|
| 372 |
}; // class BucketHeap |
|
| 373 |
|
|
| 374 |
/// \ingroup heaps |
|
| 375 |
/// |
|
| 376 |
/// \brief Simplified bucket heap data structure. |
|
| 377 |
/// |
|
| 378 |
/// This class implements a simplified \e bucket \e heap data |
|
| 379 |
/// structure. It does not provide some functionality, but it is |
|
| 380 |
/// faster and simpler than BucketHeap. The main difference is |
|
| 381 |
/// that BucketHeap stores a doubly-linked list for each key while |
|
| 382 |
/// this class stores only simply-linked lists. It supports erasing |
|
| 383 |
/// only for the item having minimum priority and it does not support |
|
| 384 |
/// key increasing and decreasing. |
|
| 385 |
/// |
|
| 386 |
/// Note that this implementation does not conform to the |
|
| 387 |
/// \ref concepts::Heap "heap concept" due to the lack of some |
|
| 388 |
/// functionality. |
|
| 389 |
/// |
|
| 390 |
/// \tparam IM A read-writable item map with \c int values, used |
|
| 391 |
/// internally to handle the cross references. |
|
| 392 |
/// \tparam MIN Indicate if the heap is a \e min-heap or a \e max-heap. |
|
| 393 |
/// The default is \e min-heap. If this parameter is set to \c false, |
|
| 394 |
/// then the comparison is reversed, so the top(), prio() and pop() |
|
| 395 |
/// functions deal with the item having maximum priority instead of the |
|
| 396 |
/// minimum. |
|
| 397 |
/// |
|
| 398 |
/// \sa BucketHeap |
|
| 399 |
template <typename IM, bool MIN = true > |
|
| 400 |
class SimpleBucketHeap {
|
|
| 401 |
|
|
| 402 |
public: |
|
| 403 |
|
|
| 404 |
/// Type of the item-int map. |
|
| 405 |
typedef IM ItemIntMap; |
|
| 406 |
/// Type of the priorities. |
|
| 407 |
typedef int Prio; |
|
| 408 |
/// Type of the items stored in the heap. |
|
| 409 |
typedef typename ItemIntMap::Key Item; |
|
| 410 |
/// Type of the item-priority pairs. |
|
| 411 |
typedef std::pair<Item,Prio> Pair; |
|
| 412 |
|
|
| 413 |
private: |
|
| 414 |
|
|
| 415 |
typedef _bucket_heap_bits::DirectionTraits<MIN> Direction; |
|
| 416 |
|
|
| 417 |
public: |
|
| 418 |
|
|
| 419 |
/// \brief Type to represent the states of the items. |
|
| 420 |
/// |
|
| 421 |
/// Each item has a state associated to it. It can be "in heap", |
|
| 422 |
/// "pre-heap" or "post-heap". The latter two are indifferent from the |
|
| 423 |
/// heap's point of view, but may be useful to the user. |
|
| 424 |
/// |
|
| 425 |
/// The item-int map must be initialized in such way that it assigns |
|
| 426 |
/// \c PRE_HEAP (<tt>-1</tt>) to any element to be put in the heap. |
|
| 427 |
enum State {
|
|
| 428 |
IN_HEAP = 0, ///< = 0. |
|
| 429 |
PRE_HEAP = -1, ///< = -1. |
|
| 430 |
POST_HEAP = -2 ///< = -2. |
|
| 431 |
}; |
|
| 432 |
|
|
| 433 |
public: |
|
| 434 |
|
|
| 435 |
/// \brief Constructor. |
|
| 436 |
/// |
|
| 437 |
/// Constructor. |
|
| 438 |
/// \param map A map that assigns \c int values to the items. |
|
| 439 |
/// It is used internally to handle the cross references. |
|
| 440 |
/// The assigned value must be \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 441 |
explicit SimpleBucketHeap(ItemIntMap &map) |
|
| 442 |
: _iim(map), _free(-1), _num(0), _minimum(0) {}
|
|
| 443 |
|
|
| 444 |
/// \brief The number of items stored in the heap. |
|
| 445 |
/// |
|
| 446 |
/// This function returns the number of items stored in the heap. |
|
| 447 |
int size() const { return _num; }
|
|
| 448 |
|
|
| 449 |
/// \brief Check if the heap is empty. |
|
| 450 |
/// |
|
| 451 |
/// This function returns \c true if the heap is empty. |
|
| 452 |
bool empty() const { return _num == 0; }
|
|
| 453 |
|
|
| 454 |
/// \brief Make the heap empty. |
|
| 455 |
/// |
|
| 456 |
/// This functon makes the heap empty. |
|
| 457 |
/// It does not change the cross reference map. If you want to reuse |
|
| 458 |
/// a heap that is not surely empty, you should first clear it and |
|
| 459 |
/// then you should set the cross reference map to \c PRE_HEAP |
|
| 460 |
/// for each item. |
|
| 461 |
void clear() {
|
|
| 462 |
_data.clear(); _first.clear(); _free = -1; _num = 0; _minimum = 0; |
|
| 463 |
} |
|
| 464 |
|
|
| 465 |
/// \brief Insert a pair of item and priority into the heap. |
|
| 466 |
/// |
|
| 467 |
/// This function inserts \c p.first to the heap with priority |
|
| 468 |
/// \c p.second. |
|
| 469 |
/// \param p The pair to insert. |
|
| 470 |
/// \pre \c p.first must not be stored in the heap. |
|
| 471 |
void push(const Pair& p) {
|
|
| 472 |
push(p.first, p.second); |
|
| 473 |
} |
|
| 474 |
|
|
| 475 |
/// \brief Insert an item into the heap with the given priority. |
|
| 476 |
/// |
|
| 477 |
/// This function inserts the given item into the heap with the |
|
| 478 |
/// given priority. |
|
| 479 |
/// \param i The item to insert. |
|
| 480 |
/// \param p The priority of the item. |
|
| 481 |
/// \pre \e i must not be stored in the heap. |
|
| 482 |
void push(const Item &i, const Prio &p) {
|
|
| 483 |
int idx; |
|
| 484 |
if (_free == -1) {
|
|
| 485 |
idx = _data.size(); |
|
| 486 |
_data.push_back(BucketItem(i)); |
|
| 487 |
} else {
|
|
| 488 |
idx = _free; |
|
| 489 |
_free = _data[idx].next; |
|
| 490 |
_data[idx].item = i; |
|
| 491 |
} |
|
| 492 |
_iim[i] = idx; |
|
| 493 |
if (p >= int(_first.size())) _first.resize(p + 1, -1); |
|
| 494 |
_data[idx].next = _first[p]; |
|
| 495 |
_first[p] = idx; |
|
| 496 |
if (Direction::less(p, _minimum)) {
|
|
| 497 |
_minimum = p; |
|
| 498 |
} |
|
| 499 |
++_num; |
|
| 500 |
} |
|
| 501 |
|
|
| 502 |
/// \brief Return the item having minimum priority. |
|
| 503 |
/// |
|
| 504 |
/// This function returns the item having minimum priority. |
|
| 505 |
/// \pre The heap must be non-empty. |
|
| 506 |
Item top() const {
|
|
| 507 |
while (_first[_minimum] == -1) {
|
|
| 508 |
Direction::increase(_minimum); |
|
| 509 |
} |
|
| 510 |
return _data[_first[_minimum]].item; |
|
| 511 |
} |
|
| 512 |
|
|
| 513 |
/// \brief The minimum priority. |
|
| 514 |
/// |
|
| 515 |
/// This function returns the minimum priority. |
|
| 516 |
/// \pre The heap must be non-empty. |
|
| 517 |
Prio prio() const {
|
|
| 518 |
while (_first[_minimum] == -1) {
|
|
| 519 |
Direction::increase(_minimum); |
|
| 520 |
} |
|
| 521 |
return _minimum; |
|
| 522 |
} |
|
| 523 |
|
|
| 524 |
/// \brief Remove the item having minimum priority. |
|
| 525 |
/// |
|
| 526 |
/// This function removes the item having minimum priority. |
|
| 527 |
/// \pre The heap must be non-empty. |
|
| 528 |
void pop() {
|
|
| 529 |
while (_first[_minimum] == -1) {
|
|
| 530 |
Direction::increase(_minimum); |
|
| 531 |
} |
|
| 532 |
int idx = _first[_minimum]; |
|
| 533 |
_iim[_data[idx].item] = -2; |
|
| 534 |
_first[_minimum] = _data[idx].next; |
|
| 535 |
_data[idx].next = _free; |
|
| 536 |
_free = idx; |
|
| 537 |
--_num; |
|
| 538 |
} |
|
| 539 |
|
|
| 540 |
/// \brief The priority of the given item. |
|
| 541 |
/// |
|
| 542 |
/// This function returns the priority of the given item. |
|
| 543 |
/// \param i The item. |
|
| 544 |
/// \pre \e i must be in the heap. |
|
| 545 |
/// \warning This operator is not a constant time function because |
|
| 546 |
/// it scans the whole data structure to find the proper value. |
|
| 547 |
Prio operator[](const Item &i) const {
|
|
| 548 |
for (int k = 0; k < int(_first.size()); ++k) {
|
|
| 549 |
int idx = _first[k]; |
|
| 550 |
while (idx != -1) {
|
|
| 551 |
if (_data[idx].item == i) {
|
|
| 552 |
return k; |
|
| 553 |
} |
|
| 554 |
idx = _data[idx].next; |
|
| 555 |
} |
|
| 556 |
} |
|
| 557 |
return -1; |
|
| 558 |
} |
|
| 559 |
|
|
| 560 |
/// \brief Return the state of an item. |
|
| 561 |
/// |
|
| 562 |
/// This method returns \c PRE_HEAP if the given item has never |
|
| 563 |
/// been in the heap, \c IN_HEAP if it is in the heap at the moment, |
|
| 564 |
/// and \c POST_HEAP otherwise. |
|
| 565 |
/// In the latter case it is possible that the item will get back |
|
| 566 |
/// to the heap again. |
|
| 567 |
/// \param i The item. |
|
| 568 |
State state(const Item &i) const {
|
|
| 569 |
int idx = _iim[i]; |
|
| 570 |
if (idx >= 0) idx = 0; |
|
| 571 |
return State(idx); |
|
| 572 |
} |
|
| 573 |
|
|
| 574 |
private: |
|
| 575 |
|
|
| 576 |
struct BucketItem {
|
|
| 577 |
BucketItem(const Item& _item) |
|
| 578 |
: item(_item) {}
|
|
| 579 |
|
|
| 580 |
Item item; |
|
| 581 |
int next; |
|
| 582 |
}; |
|
| 583 |
|
|
| 584 |
ItemIntMap& _iim; |
|
| 585 |
std::vector<int> _first; |
|
| 586 |
std::vector<BucketItem> _data; |
|
| 587 |
int _free, _num; |
|
| 588 |
mutable int _minimum; |
|
| 589 |
|
|
| 590 |
}; // class SimpleBucketHeap |
|
| 591 |
|
|
| 592 |
} |
|
| 593 |
|
|
| 594 |
#endif |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
///\file |
|
| 20 |
///\brief Implementation of the CBC MIP solver interface. |
|
| 21 |
|
|
| 22 |
#include "cbc.h" |
|
| 23 |
|
|
| 24 |
#include <coin/CoinModel.hpp> |
|
| 25 |
#include <coin/CbcModel.hpp> |
|
| 26 |
#include <coin/OsiSolverInterface.hpp> |
|
| 27 |
|
|
| 28 |
#ifdef COIN_HAS_CLP |
|
| 29 |
#include "coin/OsiClpSolverInterface.hpp" |
|
| 30 |
#endif |
|
| 31 |
#ifdef COIN_HAS_OSL |
|
| 32 |
#include "coin/OsiOslSolverInterface.hpp" |
|
| 33 |
#endif |
|
| 34 |
|
|
| 35 |
#include "coin/CbcCutGenerator.hpp" |
|
| 36 |
#include "coin/CbcHeuristicLocal.hpp" |
|
| 37 |
#include "coin/CbcHeuristicGreedy.hpp" |
|
| 38 |
#include "coin/CbcHeuristicFPump.hpp" |
|
| 39 |
#include "coin/CbcHeuristicRINS.hpp" |
|
| 40 |
|
|
| 41 |
#include "coin/CglGomory.hpp" |
|
| 42 |
#include "coin/CglProbing.hpp" |
|
| 43 |
#include "coin/CglKnapsackCover.hpp" |
|
| 44 |
#include "coin/CglOddHole.hpp" |
|
| 45 |
#include "coin/CglClique.hpp" |
|
| 46 |
#include "coin/CglFlowCover.hpp" |
|
| 47 |
#include "coin/CglMixedIntegerRounding.hpp" |
|
| 48 |
|
|
| 49 |
#include "coin/CbcHeuristic.hpp" |
|
| 50 |
|
|
| 51 |
namespace lemon {
|
|
| 52 |
|
|
| 53 |
CbcMip::CbcMip() {
|
|
| 54 |
_prob = new CoinModel(); |
|
| 55 |
_prob->setProblemName("LEMON");
|
|
| 56 |
_osi_solver = 0; |
|
| 57 |
_cbc_model = 0; |
|
| 58 |
messageLevel(MESSAGE_NOTHING); |
|
| 59 |
} |
|
| 60 |
|
|
| 61 |
CbcMip::CbcMip(const CbcMip& other) {
|
|
| 62 |
_prob = new CoinModel(*other._prob); |
|
| 63 |
_prob->setProblemName("LEMON");
|
|
| 64 |
_osi_solver = 0; |
|
| 65 |
_cbc_model = 0; |
|
| 66 |
messageLevel(MESSAGE_NOTHING); |
|
| 67 |
} |
|
| 68 |
|
|
| 69 |
CbcMip::~CbcMip() {
|
|
| 70 |
delete _prob; |
|
| 71 |
if (_osi_solver) delete _osi_solver; |
|
| 72 |
if (_cbc_model) delete _cbc_model; |
|
| 73 |
} |
|
| 74 |
|
|
| 75 |
const char* CbcMip::_solverName() const { return "CbcMip"; }
|
|
| 76 |
|
|
| 77 |
int CbcMip::_addCol() {
|
|
| 78 |
_prob->addColumn(0, 0, 0, -COIN_DBL_MAX, COIN_DBL_MAX, 0.0, 0, false); |
|
| 79 |
return _prob->numberColumns() - 1; |
|
| 80 |
} |
|
| 81 |
|
|
| 82 |
CbcMip* CbcMip::newSolver() const {
|
|
| 83 |
CbcMip* newlp = new CbcMip; |
|
| 84 |
return newlp; |
|
| 85 |
} |
|
| 86 |
|
|
| 87 |
CbcMip* CbcMip::cloneSolver() const {
|
|
| 88 |
CbcMip* copylp = new CbcMip(*this); |
|
| 89 |
return copylp; |
|
| 90 |
} |
|
| 91 |
|
|
| 92 |
int CbcMip::_addRow() {
|
|
| 93 |
_prob->addRow(0, 0, 0, -COIN_DBL_MAX, COIN_DBL_MAX); |
|
| 94 |
return _prob->numberRows() - 1; |
|
| 95 |
} |
|
| 96 |
|
|
| 97 |
int CbcMip::_addRow(Value l, ExprIterator b, ExprIterator e, Value u) {
|
|
| 98 |
std::vector<int> indexes; |
|
| 99 |
std::vector<Value> values; |
|
| 100 |
|
|
| 101 |
for(ExprIterator it = b; it != e; ++it) {
|
|
| 102 |
indexes.push_back(it->first); |
|
| 103 |
values.push_back(it->second); |
|
| 104 |
} |
|
| 105 |
|
|
| 106 |
_prob->addRow(values.size(), &indexes.front(), &values.front(), l, u); |
|
| 107 |
return _prob->numberRows() - 1; |
|
| 108 |
} |
|
| 109 |
|
|
| 110 |
void CbcMip::_eraseCol(int i) {
|
|
| 111 |
_prob->deleteColumn(i); |
|
| 112 |
} |
|
| 113 |
|
|
| 114 |
void CbcMip::_eraseRow(int i) {
|
|
| 115 |
_prob->deleteRow(i); |
|
| 116 |
} |
|
| 117 |
|
|
| 118 |
void CbcMip::_eraseColId(int i) {
|
|
| 119 |
cols.eraseIndex(i); |
|
| 120 |
} |
|
| 121 |
|
|
| 122 |
void CbcMip::_eraseRowId(int i) {
|
|
| 123 |
rows.eraseIndex(i); |
|
| 124 |
} |
|
| 125 |
|
|
| 126 |
void CbcMip::_getColName(int c, std::string& name) const {
|
|
| 127 |
name = _prob->getColumnName(c); |
|
| 128 |
} |
|
| 129 |
|
|
| 130 |
void CbcMip::_setColName(int c, const std::string& name) {
|
|
| 131 |
_prob->setColumnName(c, name.c_str()); |
|
| 132 |
} |
|
| 133 |
|
|
| 134 |
int CbcMip::_colByName(const std::string& name) const {
|
|
| 135 |
return _prob->column(name.c_str()); |
|
| 136 |
} |
|
| 137 |
|
|
| 138 |
void CbcMip::_getRowName(int r, std::string& name) const {
|
|
| 139 |
name = _prob->getRowName(r); |
|
| 140 |
} |
|
| 141 |
|
|
| 142 |
void CbcMip::_setRowName(int r, const std::string& name) {
|
|
| 143 |
_prob->setRowName(r, name.c_str()); |
|
| 144 |
} |
|
| 145 |
|
|
| 146 |
int CbcMip::_rowByName(const std::string& name) const {
|
|
| 147 |
return _prob->row(name.c_str()); |
|
| 148 |
} |
|
| 149 |
|
|
| 150 |
void CbcMip::_setRowCoeffs(int i, ExprIterator b, ExprIterator e) {
|
|
| 151 |
for (ExprIterator it = b; it != e; ++it) {
|
|
| 152 |
_prob->setElement(i, it->first, it->second); |
|
| 153 |
} |
|
| 154 |
} |
|
| 155 |
|
|
| 156 |
void CbcMip::_getRowCoeffs(int ix, InsertIterator b) const {
|
|
| 157 |
int length = _prob->numberRows(); |
|
| 158 |
|
|
| 159 |
std::vector<int> indices(length); |
|
| 160 |
std::vector<Value> values(length); |
|
| 161 |
|
|
| 162 |
length = _prob->getRow(ix, &indices[0], &values[0]); |
|
| 163 |
|
|
| 164 |
for (int i = 0; i < length; ++i) {
|
|
| 165 |
*b = std::make_pair(indices[i], values[i]); |
|
| 166 |
++b; |
|
| 167 |
} |
|
| 168 |
} |
|
| 169 |
|
|
| 170 |
void CbcMip::_setColCoeffs(int ix, ExprIterator b, ExprIterator e) {
|
|
| 171 |
for (ExprIterator it = b; it != e; ++it) {
|
|
| 172 |
_prob->setElement(it->first, ix, it->second); |
|
| 173 |
} |
|
| 174 |
} |
|
| 175 |
|
|
| 176 |
void CbcMip::_getColCoeffs(int ix, InsertIterator b) const {
|
|
| 177 |
int length = _prob->numberColumns(); |
|
| 178 |
|
|
| 179 |
std::vector<int> indices(length); |
|
| 180 |
std::vector<Value> values(length); |
|
| 181 |
|
|
| 182 |
length = _prob->getColumn(ix, &indices[0], &values[0]); |
|
| 183 |
|
|
| 184 |
for (int i = 0; i < length; ++i) {
|
|
| 185 |
*b = std::make_pair(indices[i], values[i]); |
|
| 186 |
++b; |
|
| 187 |
} |
|
| 188 |
} |
|
| 189 |
|
|
| 190 |
void CbcMip::_setCoeff(int ix, int jx, Value value) {
|
|
| 191 |
_prob->setElement(ix, jx, value); |
|
| 192 |
} |
|
| 193 |
|
|
| 194 |
CbcMip::Value CbcMip::_getCoeff(int ix, int jx) const {
|
|
| 195 |
return _prob->getElement(ix, jx); |
|
| 196 |
} |
|
| 197 |
|
|
| 198 |
|
|
| 199 |
void CbcMip::_setColLowerBound(int i, Value lo) {
|
|
| 200 |
LEMON_ASSERT(lo != INF, "Invalid bound"); |
|
| 201 |
_prob->setColumnLower(i, lo == - INF ? - COIN_DBL_MAX : lo); |
|
| 202 |
} |
|
| 203 |
|
|
| 204 |
CbcMip::Value CbcMip::_getColLowerBound(int i) const {
|
|
| 205 |
double val = _prob->getColumnLower(i); |
|
| 206 |
return val == - COIN_DBL_MAX ? - INF : val; |
|
| 207 |
} |
|
| 208 |
|
|
| 209 |
void CbcMip::_setColUpperBound(int i, Value up) {
|
|
| 210 |
LEMON_ASSERT(up != -INF, "Invalid bound"); |
|
| 211 |
_prob->setColumnUpper(i, up == INF ? COIN_DBL_MAX : up); |
|
| 212 |
} |
|
| 213 |
|
|
| 214 |
CbcMip::Value CbcMip::_getColUpperBound(int i) const {
|
|
| 215 |
double val = _prob->getColumnUpper(i); |
|
| 216 |
return val == COIN_DBL_MAX ? INF : val; |
|
| 217 |
} |
|
| 218 |
|
|
| 219 |
void CbcMip::_setRowLowerBound(int i, Value lo) {
|
|
| 220 |
LEMON_ASSERT(lo != INF, "Invalid bound"); |
|
| 221 |
_prob->setRowLower(i, lo == - INF ? - COIN_DBL_MAX : lo); |
|
| 222 |
} |
|
| 223 |
|
|
| 224 |
CbcMip::Value CbcMip::_getRowLowerBound(int i) const {
|
|
| 225 |
double val = _prob->getRowLower(i); |
|
| 226 |
return val == - COIN_DBL_MAX ? - INF : val; |
|
| 227 |
} |
|
| 228 |
|
|
| 229 |
void CbcMip::_setRowUpperBound(int i, Value up) {
|
|
| 230 |
LEMON_ASSERT(up != -INF, "Invalid bound"); |
|
| 231 |
_prob->setRowUpper(i, up == INF ? COIN_DBL_MAX : up); |
|
| 232 |
} |
|
| 233 |
|
|
| 234 |
CbcMip::Value CbcMip::_getRowUpperBound(int i) const {
|
|
| 235 |
double val = _prob->getRowUpper(i); |
|
| 236 |
return val == COIN_DBL_MAX ? INF : val; |
|
| 237 |
} |
|
| 238 |
|
|
| 239 |
void CbcMip::_setObjCoeffs(ExprIterator b, ExprIterator e) {
|
|
| 240 |
int num = _prob->numberColumns(); |
|
| 241 |
for (int i = 0; i < num; ++i) {
|
|
| 242 |
_prob->setColumnObjective(i, 0.0); |
|
| 243 |
} |
|
| 244 |
for (ExprIterator it = b; it != e; ++it) {
|
|
| 245 |
_prob->setColumnObjective(it->first, it->second); |
|
| 246 |
} |
|
| 247 |
} |
|
| 248 |
|
|
| 249 |
void CbcMip::_getObjCoeffs(InsertIterator b) const {
|
|
| 250 |
int num = _prob->numberColumns(); |
|
| 251 |
for (int i = 0; i < num; ++i) {
|
|
| 252 |
Value coef = _prob->getColumnObjective(i); |
|
| 253 |
if (coef != 0.0) {
|
|
| 254 |
*b = std::make_pair(i, coef); |
|
| 255 |
++b; |
|
| 256 |
} |
|
| 257 |
} |
|
| 258 |
} |
|
| 259 |
|
|
| 260 |
void CbcMip::_setObjCoeff(int i, Value obj_coef) {
|
|
| 261 |
_prob->setColumnObjective(i, obj_coef); |
|
| 262 |
} |
|
| 263 |
|
|
| 264 |
CbcMip::Value CbcMip::_getObjCoeff(int i) const {
|
|
| 265 |
return _prob->getColumnObjective(i); |
|
| 266 |
} |
|
| 267 |
|
|
| 268 |
CbcMip::SolveExitStatus CbcMip::_solve() {
|
|
| 269 |
|
|
| 270 |
if (_osi_solver) {
|
|
| 271 |
delete _osi_solver; |
|
| 272 |
} |
|
| 273 |
#ifdef COIN_HAS_CLP |
|
| 274 |
_osi_solver = new OsiClpSolverInterface(); |
|
| 275 |
#elif COIN_HAS_OSL |
|
| 276 |
_osi_solver = new OsiOslSolverInterface(); |
|
| 277 |
#else |
|
| 278 |
#error Cannot instantiate Osi solver |
|
| 279 |
#endif |
|
| 280 |
|
|
| 281 |
_osi_solver->loadFromCoinModel(*_prob); |
|
| 282 |
|
|
| 283 |
if (_cbc_model) {
|
|
| 284 |
delete _cbc_model; |
|
| 285 |
} |
|
| 286 |
_cbc_model= new CbcModel(*_osi_solver); |
|
| 287 |
|
|
| 288 |
_osi_solver->messageHandler()->setLogLevel(_message_level); |
|
| 289 |
_cbc_model->setLogLevel(_message_level); |
|
| 290 |
|
|
| 291 |
_cbc_model->initialSolve(); |
|
| 292 |
_cbc_model->solver()->setHintParam(OsiDoReducePrint, true, OsiHintTry); |
|
| 293 |
|
|
| 294 |
if (!_cbc_model->isInitialSolveAbandoned() && |
|
| 295 |
_cbc_model->isInitialSolveProvenOptimal() && |
|
| 296 |
!_cbc_model->isInitialSolveProvenPrimalInfeasible() && |
|
| 297 |
!_cbc_model->isInitialSolveProvenDualInfeasible()) {
|
|
| 298 |
|
|
| 299 |
CglProbing generator1; |
|
| 300 |
generator1.setUsingObjective(true); |
|
| 301 |
generator1.setMaxPass(3); |
|
| 302 |
generator1.setMaxProbe(100); |
|
| 303 |
generator1.setMaxLook(50); |
|
| 304 |
generator1.setRowCuts(3); |
|
| 305 |
_cbc_model->addCutGenerator(&generator1, -1, "Probing"); |
|
| 306 |
|
|
| 307 |
CglGomory generator2; |
|
| 308 |
generator2.setLimit(300); |
|
| 309 |
_cbc_model->addCutGenerator(&generator2, -1, "Gomory"); |
|
| 310 |
|
|
| 311 |
CglKnapsackCover generator3; |
|
| 312 |
_cbc_model->addCutGenerator(&generator3, -1, "Knapsack"); |
|
| 313 |
|
|
| 314 |
CglOddHole generator4; |
|
| 315 |
generator4.setMinimumViolation(0.005); |
|
| 316 |
generator4.setMinimumViolationPer(0.00002); |
|
| 317 |
generator4.setMaximumEntries(200); |
|
| 318 |
_cbc_model->addCutGenerator(&generator4, -1, "OddHole"); |
|
| 319 |
|
|
| 320 |
CglClique generator5; |
|
| 321 |
generator5.setStarCliqueReport(false); |
|
| 322 |
generator5.setRowCliqueReport(false); |
|
| 323 |
_cbc_model->addCutGenerator(&generator5, -1, "Clique"); |
|
| 324 |
|
|
| 325 |
CglMixedIntegerRounding mixedGen; |
|
| 326 |
_cbc_model->addCutGenerator(&mixedGen, -1, "MixedIntegerRounding"); |
|
| 327 |
|
|
| 328 |
CglFlowCover flowGen; |
|
| 329 |
_cbc_model->addCutGenerator(&flowGen, -1, "FlowCover"); |
|
| 330 |
|
|
| 331 |
#ifdef COIN_HAS_CLP |
|
| 332 |
OsiClpSolverInterface* osiclp = |
|
| 333 |
dynamic_cast<OsiClpSolverInterface*>(_cbc_model->solver()); |
|
| 334 |
if (osiclp->getNumRows() < 300 && osiclp->getNumCols() < 500) {
|
|
| 335 |
osiclp->setupForRepeatedUse(2, 0); |
|
| 336 |
} |
|
| 337 |
#endif |
|
| 338 |
|
|
| 339 |
CbcRounding heuristic1(*_cbc_model); |
|
| 340 |
heuristic1.setWhen(3); |
|
| 341 |
_cbc_model->addHeuristic(&heuristic1); |
|
| 342 |
|
|
| 343 |
CbcHeuristicLocal heuristic2(*_cbc_model); |
|
| 344 |
heuristic2.setWhen(3); |
|
| 345 |
_cbc_model->addHeuristic(&heuristic2); |
|
| 346 |
|
|
| 347 |
CbcHeuristicGreedyCover heuristic3(*_cbc_model); |
|
| 348 |
heuristic3.setAlgorithm(11); |
|
| 349 |
heuristic3.setWhen(3); |
|
| 350 |
_cbc_model->addHeuristic(&heuristic3); |
|
| 351 |
|
|
| 352 |
CbcHeuristicFPump heuristic4(*_cbc_model); |
|
| 353 |
heuristic4.setWhen(3); |
|
| 354 |
_cbc_model->addHeuristic(&heuristic4); |
|
| 355 |
|
|
| 356 |
CbcHeuristicRINS heuristic5(*_cbc_model); |
|
| 357 |
heuristic5.setWhen(3); |
|
| 358 |
_cbc_model->addHeuristic(&heuristic5); |
|
| 359 |
|
|
| 360 |
if (_cbc_model->getNumCols() < 500) {
|
|
| 361 |
_cbc_model->setMaximumCutPassesAtRoot(-100); |
|
| 362 |
} else if (_cbc_model->getNumCols() < 5000) {
|
|
| 363 |
_cbc_model->setMaximumCutPassesAtRoot(100); |
|
| 364 |
} else {
|
|
| 365 |
_cbc_model->setMaximumCutPassesAtRoot(20); |
|
| 366 |
} |
|
| 367 |
|
|
| 368 |
if (_cbc_model->getNumCols() < 5000) {
|
|
| 369 |
_cbc_model->setNumberStrong(10); |
|
| 370 |
} |
|
| 371 |
|
|
| 372 |
_cbc_model->solver()->setIntParam(OsiMaxNumIterationHotStart, 100); |
|
| 373 |
_cbc_model->branchAndBound(); |
|
| 374 |
} |
|
| 375 |
|
|
| 376 |
if (_cbc_model->isAbandoned()) {
|
|
| 377 |
return UNSOLVED; |
|
| 378 |
} else {
|
|
| 379 |
return SOLVED; |
|
| 380 |
} |
|
| 381 |
} |
|
| 382 |
|
|
| 383 |
CbcMip::Value CbcMip::_getSol(int i) const {
|
|
| 384 |
return _cbc_model->getColSolution()[i]; |
|
| 385 |
} |
|
| 386 |
|
|
| 387 |
CbcMip::Value CbcMip::_getSolValue() const {
|
|
| 388 |
return _cbc_model->getObjValue(); |
|
| 389 |
} |
|
| 390 |
|
|
| 391 |
CbcMip::ProblemType CbcMip::_getType() const {
|
|
| 392 |
if (_cbc_model->isProvenOptimal()) {
|
|
| 393 |
return OPTIMAL; |
|
| 394 |
} else if (_cbc_model->isContinuousUnbounded()) {
|
|
| 395 |
return UNBOUNDED; |
|
| 396 |
} |
|
| 397 |
return FEASIBLE; |
|
| 398 |
} |
|
| 399 |
|
|
| 400 |
void CbcMip::_setSense(Sense sense) {
|
|
| 401 |
switch (sense) {
|
|
| 402 |
case MIN: |
|
| 403 |
_prob->setOptimizationDirection(1.0); |
|
| 404 |
break; |
|
| 405 |
case MAX: |
|
| 406 |
_prob->setOptimizationDirection(- 1.0); |
|
| 407 |
break; |
|
| 408 |
} |
|
| 409 |
} |
|
| 410 |
|
|
| 411 |
CbcMip::Sense CbcMip::_getSense() const {
|
|
| 412 |
if (_prob->optimizationDirection() > 0.0) {
|
|
| 413 |
return MIN; |
|
| 414 |
} else if (_prob->optimizationDirection() < 0.0) {
|
|
| 415 |
return MAX; |
|
| 416 |
} else {
|
|
| 417 |
LEMON_ASSERT(false, "Wrong sense"); |
|
| 418 |
return CbcMip::Sense(); |
|
| 419 |
} |
|
| 420 |
} |
|
| 421 |
|
|
| 422 |
void CbcMip::_setColType(int i, CbcMip::ColTypes col_type) {
|
|
| 423 |
switch (col_type){
|
|
| 424 |
case INTEGER: |
|
| 425 |
_prob->setInteger(i); |
|
| 426 |
break; |
|
| 427 |
case REAL: |
|
| 428 |
_prob->setContinuous(i); |
|
| 429 |
break; |
|
| 430 |
default:; |
|
| 431 |
LEMON_ASSERT(false, "Wrong sense"); |
|
| 432 |
} |
|
| 433 |
} |
|
| 434 |
|
|
| 435 |
CbcMip::ColTypes CbcMip::_getColType(int i) const {
|
|
| 436 |
return _prob->getColumnIsInteger(i) ? INTEGER : REAL; |
|
| 437 |
} |
|
| 438 |
|
|
| 439 |
void CbcMip::_clear() {
|
|
| 440 |
delete _prob; |
|
| 441 |
if (_osi_solver) {
|
|
| 442 |
delete _osi_solver; |
|
| 443 |
_osi_solver = 0; |
|
| 444 |
} |
|
| 445 |
if (_cbc_model) {
|
|
| 446 |
delete _cbc_model; |
|
| 447 |
_cbc_model = 0; |
|
| 448 |
} |
|
| 449 |
|
|
| 450 |
_prob = new CoinModel(); |
|
| 451 |
rows.clear(); |
|
| 452 |
cols.clear(); |
|
| 453 |
} |
|
| 454 |
|
|
| 455 |
void CbcMip::_messageLevel(MessageLevel level) {
|
|
| 456 |
switch (level) {
|
|
| 457 |
case MESSAGE_NOTHING: |
|
| 458 |
_message_level = 0; |
|
| 459 |
break; |
|
| 460 |
case MESSAGE_ERROR: |
|
| 461 |
_message_level = 1; |
|
| 462 |
break; |
|
| 463 |
case MESSAGE_WARNING: |
|
| 464 |
_message_level = 1; |
|
| 465 |
break; |
|
| 466 |
case MESSAGE_NORMAL: |
|
| 467 |
_message_level = 2; |
|
| 468 |
break; |
|
| 469 |
case MESSAGE_VERBOSE: |
|
| 470 |
_message_level = 3; |
|
| 471 |
break; |
|
| 472 |
} |
|
| 473 |
} |
|
| 474 |
|
|
| 475 |
} //END OF NAMESPACE LEMON |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
// -*- C++ -*- |
|
| 20 |
#ifndef LEMON_CBC_H |
|
| 21 |
#define LEMON_CBC_H |
|
| 22 |
|
|
| 23 |
///\file |
|
| 24 |
///\brief Header of the LEMON-CBC mip solver interface. |
|
| 25 |
///\ingroup lp_group |
|
| 26 |
|
|
| 27 |
#include <lemon/lp_base.h> |
|
| 28 |
|
|
| 29 |
class CoinModel; |
|
| 30 |
class OsiSolverInterface; |
|
| 31 |
class CbcModel; |
|
| 32 |
|
|
| 33 |
namespace lemon {
|
|
| 34 |
|
|
| 35 |
/// \brief Interface for the CBC MIP solver |
|
| 36 |
/// |
|
| 37 |
/// This class implements an interface for the CBC MIP solver. |
|
| 38 |
///\ingroup lp_group |
|
| 39 |
class CbcMip : public MipSolver {
|
|
| 40 |
protected: |
|
| 41 |
|
|
| 42 |
CoinModel *_prob; |
|
| 43 |
OsiSolverInterface *_osi_solver; |
|
| 44 |
CbcModel *_cbc_model; |
|
| 45 |
|
|
| 46 |
public: |
|
| 47 |
|
|
| 48 |
/// \e |
|
| 49 |
CbcMip(); |
|
| 50 |
/// \e |
|
| 51 |
CbcMip(const CbcMip&); |
|
| 52 |
/// \e |
|
| 53 |
~CbcMip(); |
|
| 54 |
/// \e |
|
| 55 |
virtual CbcMip* newSolver() const; |
|
| 56 |
/// \e |
|
| 57 |
virtual CbcMip* cloneSolver() const; |
|
| 58 |
|
|
| 59 |
protected: |
|
| 60 |
|
|
| 61 |
virtual const char* _solverName() const; |
|
| 62 |
|
|
| 63 |
virtual int _addCol(); |
|
| 64 |
virtual int _addRow(); |
|
| 65 |
virtual int _addRow(Value l, ExprIterator b, ExprIterator e, Value u); |
|
| 66 |
|
|
| 67 |
virtual void _eraseCol(int i); |
|
| 68 |
virtual void _eraseRow(int i); |
|
| 69 |
|
|
| 70 |
virtual void _eraseColId(int i); |
|
| 71 |
virtual void _eraseRowId(int i); |
|
| 72 |
|
|
| 73 |
virtual void _getColName(int col, std::string& name) const; |
|
| 74 |
virtual void _setColName(int col, const std::string& name); |
|
| 75 |
virtual int _colByName(const std::string& name) const; |
|
| 76 |
|
|
| 77 |
virtual void _getRowName(int row, std::string& name) const; |
|
| 78 |
virtual void _setRowName(int row, const std::string& name); |
|
| 79 |
virtual int _rowByName(const std::string& name) const; |
|
| 80 |
|
|
| 81 |
virtual void _setRowCoeffs(int i, ExprIterator b, ExprIterator e); |
|
| 82 |
virtual void _getRowCoeffs(int i, InsertIterator b) const; |
|
| 83 |
|
|
| 84 |
virtual void _setColCoeffs(int i, ExprIterator b, ExprIterator e); |
|
| 85 |
virtual void _getColCoeffs(int i, InsertIterator b) const; |
|
| 86 |
|
|
| 87 |
virtual void _setCoeff(int row, int col, Value value); |
|
| 88 |
virtual Value _getCoeff(int row, int col) const; |
|
| 89 |
|
|
| 90 |
virtual void _setColLowerBound(int i, Value value); |
|
| 91 |
virtual Value _getColLowerBound(int i) const; |
|
| 92 |
virtual void _setColUpperBound(int i, Value value); |
|
| 93 |
virtual Value _getColUpperBound(int i) const; |
|
| 94 |
|
|
| 95 |
virtual void _setRowLowerBound(int i, Value value); |
|
| 96 |
virtual Value _getRowLowerBound(int i) const; |
|
| 97 |
virtual void _setRowUpperBound(int i, Value value); |
|
| 98 |
virtual Value _getRowUpperBound(int i) const; |
|
| 99 |
|
|
| 100 |
virtual void _setObjCoeffs(ExprIterator b, ExprIterator e); |
|
| 101 |
virtual void _getObjCoeffs(InsertIterator b) const; |
|
| 102 |
|
|
| 103 |
virtual void _setObjCoeff(int i, Value obj_coef); |
|
| 104 |
virtual Value _getObjCoeff(int i) const; |
|
| 105 |
|
|
| 106 |
virtual void _setSense(Sense sense); |
|
| 107 |
virtual Sense _getSense() const; |
|
| 108 |
|
|
| 109 |
virtual ColTypes _getColType(int col) const; |
|
| 110 |
virtual void _setColType(int col, ColTypes col_type); |
|
| 111 |
|
|
| 112 |
virtual SolveExitStatus _solve(); |
|
| 113 |
virtual ProblemType _getType() const; |
|
| 114 |
virtual Value _getSol(int i) const; |
|
| 115 |
virtual Value _getSolValue() const; |
|
| 116 |
|
|
| 117 |
virtual void _clear(); |
|
| 118 |
|
|
| 119 |
virtual void _messageLevel(MessageLevel level); |
|
| 120 |
void _applyMessageLevel(); |
|
| 121 |
|
|
| 122 |
int _message_level; |
|
| 123 |
|
|
| 124 |
|
|
| 125 |
|
|
| 126 |
}; |
|
| 127 |
|
|
| 128 |
} |
|
| 129 |
|
|
| 130 |
#endif |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_EULER_H |
|
| 20 |
#define LEMON_EULER_H |
|
| 21 |
|
|
| 22 |
#include<lemon/core.h> |
|
| 23 |
#include<lemon/adaptors.h> |
|
| 24 |
#include<lemon/connectivity.h> |
|
| 25 |
#include <list> |
|
| 26 |
|
|
| 27 |
/// \ingroup graph_properties |
|
| 28 |
/// \file |
|
| 29 |
/// \brief Euler tour iterators and a function for checking the \e Eulerian |
|
| 30 |
/// property. |
|
| 31 |
/// |
|
| 32 |
///This file provides Euler tour iterators and a function to check |
|
| 33 |
///if a (di)graph is \e Eulerian. |
|
| 34 |
|
|
| 35 |
namespace lemon {
|
|
| 36 |
|
|
| 37 |
///Euler tour iterator for digraphs. |
|
| 38 |
|
|
| 39 |
/// \ingroup graph_prop |
|
| 40 |
///This iterator provides an Euler tour (Eulerian circuit) of a \e directed |
|
| 41 |
///graph (if there exists) and it converts to the \c Arc type of the digraph. |
|
| 42 |
/// |
|
| 43 |
///For example, if the given digraph has an Euler tour (i.e it has only one |
|
| 44 |
///non-trivial component and the in-degree is equal to the out-degree |
|
| 45 |
///for all nodes), then the following code will put the arcs of \c g |
|
| 46 |
///to the vector \c et according to an Euler tour of \c g. |
|
| 47 |
///\code |
|
| 48 |
/// std::vector<ListDigraph::Arc> et; |
|
| 49 |
/// for(DiEulerIt<ListDigraph> e(g); e!=INVALID; ++e) |
|
| 50 |
/// et.push_back(e); |
|
| 51 |
///\endcode |
|
| 52 |
///If \c g has no Euler tour, then the resulted walk will not be closed |
|
| 53 |
///or not contain all arcs. |
|
| 54 |
///\sa EulerIt |
|
| 55 |
template<typename GR> |
|
| 56 |
class DiEulerIt |
|
| 57 |
{
|
|
| 58 |
typedef typename GR::Node Node; |
|
| 59 |
typedef typename GR::NodeIt NodeIt; |
|
| 60 |
typedef typename GR::Arc Arc; |
|
| 61 |
typedef typename GR::ArcIt ArcIt; |
|
| 62 |
typedef typename GR::OutArcIt OutArcIt; |
|
| 63 |
typedef typename GR::InArcIt InArcIt; |
|
| 64 |
|
|
| 65 |
const GR &g; |
|
| 66 |
typename GR::template NodeMap<OutArcIt> narc; |
|
| 67 |
std::list<Arc> euler; |
|
| 68 |
|
|
| 69 |
public: |
|
| 70 |
|
|
| 71 |
///Constructor |
|
| 72 |
|
|
| 73 |
///Constructor. |
|
| 74 |
///\param gr A digraph. |
|
| 75 |
///\param start The starting point of the tour. If it is not given, |
|
| 76 |
///the tour will start from the first node that has an outgoing arc. |
|
| 77 |
DiEulerIt(const GR &gr, typename GR::Node start = INVALID) |
|
| 78 |
: g(gr), narc(g) |
|
| 79 |
{
|
|
| 80 |
if (start==INVALID) {
|
|
| 81 |
NodeIt n(g); |
|
| 82 |
while (n!=INVALID && OutArcIt(g,n)==INVALID) ++n; |
|
| 83 |
start=n; |
|
| 84 |
} |
|
| 85 |
if (start!=INVALID) {
|
|
| 86 |
for (NodeIt n(g); n!=INVALID; ++n) narc[n]=OutArcIt(g,n); |
|
| 87 |
while (narc[start]!=INVALID) {
|
|
| 88 |
euler.push_back(narc[start]); |
|
| 89 |
Node next=g.target(narc[start]); |
|
| 90 |
++narc[start]; |
|
| 91 |
start=next; |
|
| 92 |
} |
|
| 93 |
} |
|
| 94 |
} |
|
| 95 |
|
|
| 96 |
///Arc conversion |
|
| 97 |
operator Arc() { return euler.empty()?INVALID:euler.front(); }
|
|
| 98 |
///Compare with \c INVALID |
|
| 99 |
bool operator==(Invalid) { return euler.empty(); }
|
|
| 100 |
///Compare with \c INVALID |
|
| 101 |
bool operator!=(Invalid) { return !euler.empty(); }
|
|
| 102 |
|
|
| 103 |
///Next arc of the tour |
|
| 104 |
|
|
| 105 |
///Next arc of the tour |
|
| 106 |
/// |
|
| 107 |
DiEulerIt &operator++() {
|
|
| 108 |
Node s=g.target(euler.front()); |
|
| 109 |
euler.pop_front(); |
|
| 110 |
typename std::list<Arc>::iterator next=euler.begin(); |
|
| 111 |
while(narc[s]!=INVALID) {
|
|
| 112 |
euler.insert(next,narc[s]); |
|
| 113 |
Node n=g.target(narc[s]); |
|
| 114 |
++narc[s]; |
|
| 115 |
s=n; |
|
| 116 |
} |
|
| 117 |
return *this; |
|
| 118 |
} |
|
| 119 |
///Postfix incrementation |
|
| 120 |
|
|
| 121 |
/// Postfix incrementation. |
|
| 122 |
/// |
|
| 123 |
///\warning This incrementation |
|
| 124 |
///returns an \c Arc, not a \ref DiEulerIt, as one may |
|
| 125 |
///expect. |
|
| 126 |
Arc operator++(int) |
|
| 127 |
{
|
|
| 128 |
Arc e=*this; |
|
| 129 |
++(*this); |
|
| 130 |
return e; |
|
| 131 |
} |
|
| 132 |
}; |
|
| 133 |
|
|
| 134 |
///Euler tour iterator for graphs. |
|
| 135 |
|
|
| 136 |
/// \ingroup graph_properties |
|
| 137 |
///This iterator provides an Euler tour (Eulerian circuit) of an |
|
| 138 |
///\e undirected graph (if there exists) and it converts to the \c Arc |
|
| 139 |
///and \c Edge types of the graph. |
|
| 140 |
/// |
|
| 141 |
///For example, if the given graph has an Euler tour (i.e it has only one |
|
| 142 |
///non-trivial component and the degree of each node is even), |
|
| 143 |
///the following code will print the arc IDs according to an |
|
| 144 |
///Euler tour of \c g. |
|
| 145 |
///\code |
|
| 146 |
/// for(EulerIt<ListGraph> e(g); e!=INVALID; ++e) {
|
|
| 147 |
/// std::cout << g.id(Edge(e)) << std::eol; |
|
| 148 |
/// } |
|
| 149 |
///\endcode |
|
| 150 |
///Although this iterator is for undirected graphs, it still returns |
|
| 151 |
///arcs in order to indicate the direction of the tour. |
|
| 152 |
///(But arcs convert to edges, of course.) |
|
| 153 |
/// |
|
| 154 |
///If \c g has no Euler tour, then the resulted walk will not be closed |
|
| 155 |
///or not contain all edges. |
|
| 156 |
template<typename GR> |
|
| 157 |
class EulerIt |
|
| 158 |
{
|
|
| 159 |
typedef typename GR::Node Node; |
|
| 160 |
typedef typename GR::NodeIt NodeIt; |
|
| 161 |
typedef typename GR::Arc Arc; |
|
| 162 |
typedef typename GR::Edge Edge; |
|
| 163 |
typedef typename GR::ArcIt ArcIt; |
|
| 164 |
typedef typename GR::OutArcIt OutArcIt; |
|
| 165 |
typedef typename GR::InArcIt InArcIt; |
|
| 166 |
|
|
| 167 |
const GR &g; |
|
| 168 |
typename GR::template NodeMap<OutArcIt> narc; |
|
| 169 |
typename GR::template EdgeMap<bool> visited; |
|
| 170 |
std::list<Arc> euler; |
|
| 171 |
|
|
| 172 |
public: |
|
| 173 |
|
|
| 174 |
///Constructor |
|
| 175 |
|
|
| 176 |
///Constructor. |
|
| 177 |
///\param gr A graph. |
|
| 178 |
///\param start The starting point of the tour. If it is not given, |
|
| 179 |
///the tour will start from the first node that has an incident edge. |
|
| 180 |
EulerIt(const GR &gr, typename GR::Node start = INVALID) |
|
| 181 |
: g(gr), narc(g), visited(g, false) |
|
| 182 |
{
|
|
| 183 |
if (start==INVALID) {
|
|
| 184 |
NodeIt n(g); |
|
| 185 |
while (n!=INVALID && OutArcIt(g,n)==INVALID) ++n; |
|
| 186 |
start=n; |
|
| 187 |
} |
|
| 188 |
if (start!=INVALID) {
|
|
| 189 |
for (NodeIt n(g); n!=INVALID; ++n) narc[n]=OutArcIt(g,n); |
|
| 190 |
while(narc[start]!=INVALID) {
|
|
| 191 |
euler.push_back(narc[start]); |
|
| 192 |
visited[narc[start]]=true; |
|
| 193 |
Node next=g.target(narc[start]); |
|
| 194 |
++narc[start]; |
|
| 195 |
start=next; |
|
| 196 |
while(narc[start]!=INVALID && visited[narc[start]]) ++narc[start]; |
|
| 197 |
} |
|
| 198 |
} |
|
| 199 |
} |
|
| 200 |
|
|
| 201 |
///Arc conversion |
|
| 202 |
operator Arc() const { return euler.empty()?INVALID:euler.front(); }
|
|
| 203 |
///Edge conversion |
|
| 204 |
operator Edge() const { return euler.empty()?INVALID:euler.front(); }
|
|
| 205 |
///Compare with \c INVALID |
|
| 206 |
bool operator==(Invalid) const { return euler.empty(); }
|
|
| 207 |
///Compare with \c INVALID |
|
| 208 |
bool operator!=(Invalid) const { return !euler.empty(); }
|
|
| 209 |
|
|
| 210 |
///Next arc of the tour |
|
| 211 |
|
|
| 212 |
///Next arc of the tour |
|
| 213 |
/// |
|
| 214 |
EulerIt &operator++() {
|
|
| 215 |
Node s=g.target(euler.front()); |
|
| 216 |
euler.pop_front(); |
|
| 217 |
typename std::list<Arc>::iterator next=euler.begin(); |
|
| 218 |
while(narc[s]!=INVALID) {
|
|
| 219 |
while(narc[s]!=INVALID && visited[narc[s]]) ++narc[s]; |
|
| 220 |
if(narc[s]==INVALID) break; |
|
| 221 |
else {
|
|
| 222 |
euler.insert(next,narc[s]); |
|
| 223 |
visited[narc[s]]=true; |
|
| 224 |
Node n=g.target(narc[s]); |
|
| 225 |
++narc[s]; |
|
| 226 |
s=n; |
|
| 227 |
} |
|
| 228 |
} |
|
| 229 |
return *this; |
|
| 230 |
} |
|
| 231 |
|
|
| 232 |
///Postfix incrementation |
|
| 233 |
|
|
| 234 |
/// Postfix incrementation. |
|
| 235 |
/// |
|
| 236 |
///\warning This incrementation returns an \c Arc (which converts to |
|
| 237 |
///an \c Edge), not an \ref EulerIt, as one may expect. |
|
| 238 |
Arc operator++(int) |
|
| 239 |
{
|
|
| 240 |
Arc e=*this; |
|
| 241 |
++(*this); |
|
| 242 |
return e; |
|
| 243 |
} |
|
| 244 |
}; |
|
| 245 |
|
|
| 246 |
|
|
| 247 |
///Check if the given graph is Eulerian |
|
| 248 |
|
|
| 249 |
/// \ingroup graph_properties |
|
| 250 |
///This function checks if the given graph is Eulerian. |
|
| 251 |
///It works for both directed and undirected graphs. |
|
| 252 |
/// |
|
| 253 |
///By definition, a digraph is called \e Eulerian if |
|
| 254 |
///and only if it is connected and the number of incoming and outgoing |
|
| 255 |
///arcs are the same for each node. |
|
| 256 |
///Similarly, an undirected graph is called \e Eulerian if |
|
| 257 |
///and only if it is connected and the number of incident edges is even |
|
| 258 |
///for each node. |
|
| 259 |
/// |
|
| 260 |
///\note There are (di)graphs that are not Eulerian, but still have an |
|
| 261 |
/// Euler tour, since they may contain isolated nodes. |
|
| 262 |
/// |
|
| 263 |
///\sa DiEulerIt, EulerIt |
|
| 264 |
template<typename GR> |
|
| 265 |
#ifdef DOXYGEN |
|
| 266 |
bool |
|
| 267 |
#else |
|
| 268 |
typename enable_if<UndirectedTagIndicator<GR>,bool>::type |
|
| 269 |
eulerian(const GR &g) |
|
| 270 |
{
|
|
| 271 |
for(typename GR::NodeIt n(g);n!=INVALID;++n) |
|
| 272 |
if(countIncEdges(g,n)%2) return false; |
|
| 273 |
return connected(g); |
|
| 274 |
} |
|
| 275 |
template<class GR> |
|
| 276 |
typename disable_if<UndirectedTagIndicator<GR>,bool>::type |
|
| 277 |
#endif |
|
| 278 |
eulerian(const GR &g) |
|
| 279 |
{
|
|
| 280 |
for(typename GR::NodeIt n(g);n!=INVALID;++n) |
|
| 281 |
if(countInArcs(g,n)!=countOutArcs(g,n)) return false; |
|
| 282 |
return connected(undirector(g)); |
|
| 283 |
} |
|
| 284 |
|
|
| 285 |
} |
|
| 286 |
|
|
| 287 |
#endif |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_FIB_HEAP_H |
|
| 20 |
#define LEMON_FIB_HEAP_H |
|
| 21 |
|
|
| 22 |
///\file |
|
| 23 |
///\ingroup heaps |
|
| 24 |
///\brief Fibonacci heap implementation. |
|
| 25 |
|
|
| 26 |
#include <vector> |
|
| 27 |
#include <utility> |
|
| 28 |
#include <functional> |
|
| 29 |
#include <lemon/math.h> |
|
| 30 |
|
|
| 31 |
namespace lemon {
|
|
| 32 |
|
|
| 33 |
/// \ingroup heaps |
|
| 34 |
/// |
|
| 35 |
/// \brief Fibonacci heap data structure. |
|
| 36 |
/// |
|
| 37 |
/// This class implements the \e Fibonacci \e heap data structure. |
|
| 38 |
/// It fully conforms to the \ref concepts::Heap "heap concept". |
|
| 39 |
/// |
|
| 40 |
/// The methods \ref increase() and \ref erase() are not efficient in a |
|
| 41 |
/// Fibonacci heap. In case of many calls of these operations, it is |
|
| 42 |
/// better to use other heap structure, e.g. \ref BinHeap "binary heap". |
|
| 43 |
/// |
|
| 44 |
/// \tparam PR Type of the priorities of the items. |
|
| 45 |
/// \tparam IM A read-writable item map with \c int values, used |
|
| 46 |
/// internally to handle the cross references. |
|
| 47 |
/// \tparam CMP A functor class for comparing the priorities. |
|
| 48 |
/// The default is \c std::less<PR>. |
|
| 49 |
#ifdef DOXYGEN |
|
| 50 |
template <typename PR, typename IM, typename CMP> |
|
| 51 |
#else |
|
| 52 |
template <typename PR, typename IM, typename CMP = std::less<PR> > |
|
| 53 |
#endif |
|
| 54 |
class FibHeap {
|
|
| 55 |
public: |
|
| 56 |
|
|
| 57 |
/// Type of the item-int map. |
|
| 58 |
typedef IM ItemIntMap; |
|
| 59 |
/// Type of the priorities. |
|
| 60 |
typedef PR Prio; |
|
| 61 |
/// Type of the items stored in the heap. |
|
| 62 |
typedef typename ItemIntMap::Key Item; |
|
| 63 |
/// Type of the item-priority pairs. |
|
| 64 |
typedef std::pair<Item,Prio> Pair; |
|
| 65 |
/// Functor type for comparing the priorities. |
|
| 66 |
typedef CMP Compare; |
|
| 67 |
|
|
| 68 |
private: |
|
| 69 |
class Store; |
|
| 70 |
|
|
| 71 |
std::vector<Store> _data; |
|
| 72 |
int _minimum; |
|
| 73 |
ItemIntMap &_iim; |
|
| 74 |
Compare _comp; |
|
| 75 |
int _num; |
|
| 76 |
|
|
| 77 |
public: |
|
| 78 |
|
|
| 79 |
/// \brief Type to represent the states of the items. |
|
| 80 |
/// |
|
| 81 |
/// Each item has a state associated to it. It can be "in heap", |
|
| 82 |
/// "pre-heap" or "post-heap". The latter two are indifferent from the |
|
| 83 |
/// heap's point of view, but may be useful to the user. |
|
| 84 |
/// |
|
| 85 |
/// The item-int map must be initialized in such way that it assigns |
|
| 86 |
/// \c PRE_HEAP (<tt>-1</tt>) to any element to be put in the heap. |
|
| 87 |
enum State {
|
|
| 88 |
IN_HEAP = 0, ///< = 0. |
|
| 89 |
PRE_HEAP = -1, ///< = -1. |
|
| 90 |
POST_HEAP = -2 ///< = -2. |
|
| 91 |
}; |
|
| 92 |
|
|
| 93 |
/// \brief Constructor. |
|
| 94 |
/// |
|
| 95 |
/// Constructor. |
|
| 96 |
/// \param map A map that assigns \c int values to the items. |
|
| 97 |
/// It is used internally to handle the cross references. |
|
| 98 |
/// The assigned value must be \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 99 |
explicit FibHeap(ItemIntMap &map) |
|
| 100 |
: _minimum(0), _iim(map), _num() {}
|
|
| 101 |
|
|
| 102 |
/// \brief Constructor. |
|
| 103 |
/// |
|
| 104 |
/// Constructor. |
|
| 105 |
/// \param map A map that assigns \c int values to the items. |
|
| 106 |
/// It is used internally to handle the cross references. |
|
| 107 |
/// The assigned value must be \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 108 |
/// \param comp The function object used for comparing the priorities. |
|
| 109 |
FibHeap(ItemIntMap &map, const Compare &comp) |
|
| 110 |
: _minimum(0), _iim(map), _comp(comp), _num() {}
|
|
| 111 |
|
|
| 112 |
/// \brief The number of items stored in the heap. |
|
| 113 |
/// |
|
| 114 |
/// This function returns the number of items stored in the heap. |
|
| 115 |
int size() const { return _num; }
|
|
| 116 |
|
|
| 117 |
/// \brief Check if the heap is empty. |
|
| 118 |
/// |
|
| 119 |
/// This function returns \c true if the heap is empty. |
|
| 120 |
bool empty() const { return _num==0; }
|
|
| 121 |
|
|
| 122 |
/// \brief Make the heap empty. |
|
| 123 |
/// |
|
| 124 |
/// This functon makes the heap empty. |
|
| 125 |
/// It does not change the cross reference map. If you want to reuse |
|
| 126 |
/// a heap that is not surely empty, you should first clear it and |
|
| 127 |
/// then you should set the cross reference map to \c PRE_HEAP |
|
| 128 |
/// for each item. |
|
| 129 |
void clear() {
|
|
| 130 |
_data.clear(); _minimum = 0; _num = 0; |
|
| 131 |
} |
|
| 132 |
|
|
| 133 |
/// \brief Insert an item into the heap with the given priority. |
|
| 134 |
/// |
|
| 135 |
/// This function inserts the given item into the heap with the |
|
| 136 |
/// given priority. |
|
| 137 |
/// \param item The item to insert. |
|
| 138 |
/// \param prio The priority of the item. |
|
| 139 |
/// \pre \e item must not be stored in the heap. |
|
| 140 |
void push (const Item& item, const Prio& prio) {
|
|
| 141 |
int i=_iim[item]; |
|
| 142 |
if ( i < 0 ) {
|
|
| 143 |
int s=_data.size(); |
|
| 144 |
_iim.set( item, s ); |
|
| 145 |
Store st; |
|
| 146 |
st.name=item; |
|
| 147 |
_data.push_back(st); |
|
| 148 |
i=s; |
|
| 149 |
} else {
|
|
| 150 |
_data[i].parent=_data[i].child=-1; |
|
| 151 |
_data[i].degree=0; |
|
| 152 |
_data[i].in=true; |
|
| 153 |
_data[i].marked=false; |
|
| 154 |
} |
|
| 155 |
|
|
| 156 |
if ( _num ) {
|
|
| 157 |
_data[_data[_minimum].right_neighbor].left_neighbor=i; |
|
| 158 |
_data[i].right_neighbor=_data[_minimum].right_neighbor; |
|
| 159 |
_data[_minimum].right_neighbor=i; |
|
| 160 |
_data[i].left_neighbor=_minimum; |
|
| 161 |
if ( _comp( prio, _data[_minimum].prio) ) _minimum=i; |
|
| 162 |
} else {
|
|
| 163 |
_data[i].right_neighbor=_data[i].left_neighbor=i; |
|
| 164 |
_minimum=i; |
|
| 165 |
} |
|
| 166 |
_data[i].prio=prio; |
|
| 167 |
++_num; |
|
| 168 |
} |
|
| 169 |
|
|
| 170 |
/// \brief Return the item having minimum priority. |
|
| 171 |
/// |
|
| 172 |
/// This function returns the item having minimum priority. |
|
| 173 |
/// \pre The heap must be non-empty. |
|
| 174 |
Item top() const { return _data[_minimum].name; }
|
|
| 175 |
|
|
| 176 |
/// \brief The minimum priority. |
|
| 177 |
/// |
|
| 178 |
/// This function returns the minimum priority. |
|
| 179 |
/// \pre The heap must be non-empty. |
|
| 180 |
Prio prio() const { return _data[_minimum].prio; }
|
|
| 181 |
|
|
| 182 |
/// \brief Remove the item having minimum priority. |
|
| 183 |
/// |
|
| 184 |
/// This function removes the item having minimum priority. |
|
| 185 |
/// \pre The heap must be non-empty. |
|
| 186 |
void pop() {
|
|
| 187 |
/*The first case is that there are only one root.*/ |
|
| 188 |
if ( _data[_minimum].left_neighbor==_minimum ) {
|
|
| 189 |
_data[_minimum].in=false; |
|
| 190 |
if ( _data[_minimum].degree!=0 ) {
|
|
| 191 |
makeRoot(_data[_minimum].child); |
|
| 192 |
_minimum=_data[_minimum].child; |
|
| 193 |
balance(); |
|
| 194 |
} |
|
| 195 |
} else {
|
|
| 196 |
int right=_data[_minimum].right_neighbor; |
|
| 197 |
unlace(_minimum); |
|
| 198 |
_data[_minimum].in=false; |
|
| 199 |
if ( _data[_minimum].degree > 0 ) {
|
|
| 200 |
int left=_data[_minimum].left_neighbor; |
|
| 201 |
int child=_data[_minimum].child; |
|
| 202 |
int last_child=_data[child].left_neighbor; |
|
| 203 |
|
|
| 204 |
makeRoot(child); |
|
| 205 |
|
|
| 206 |
_data[left].right_neighbor=child; |
|
| 207 |
_data[child].left_neighbor=left; |
|
| 208 |
_data[right].left_neighbor=last_child; |
|
| 209 |
_data[last_child].right_neighbor=right; |
|
| 210 |
} |
|
| 211 |
_minimum=right; |
|
| 212 |
balance(); |
|
| 213 |
} // the case where there are more roots |
|
| 214 |
--_num; |
|
| 215 |
} |
|
| 216 |
|
|
| 217 |
/// \brief Remove the given item from the heap. |
|
| 218 |
/// |
|
| 219 |
/// This function removes the given item from the heap if it is |
|
| 220 |
/// already stored. |
|
| 221 |
/// \param item The item to delete. |
|
| 222 |
/// \pre \e item must be in the heap. |
|
| 223 |
void erase (const Item& item) {
|
|
| 224 |
int i=_iim[item]; |
|
| 225 |
|
|
| 226 |
if ( i >= 0 && _data[i].in ) {
|
|
| 227 |
if ( _data[i].parent!=-1 ) {
|
|
| 228 |
int p=_data[i].parent; |
|
| 229 |
cut(i,p); |
|
| 230 |
cascade(p); |
|
| 231 |
} |
|
| 232 |
_minimum=i; //As if its prio would be -infinity |
|
| 233 |
pop(); |
|
| 234 |
} |
|
| 235 |
} |
|
| 236 |
|
|
| 237 |
/// \brief The priority of the given item. |
|
| 238 |
/// |
|
| 239 |
/// This function returns the priority of the given item. |
|
| 240 |
/// \param item The item. |
|
| 241 |
/// \pre \e item must be in the heap. |
|
| 242 |
Prio operator[](const Item& item) const {
|
|
| 243 |
return _data[_iim[item]].prio; |
|
| 244 |
} |
|
| 245 |
|
|
| 246 |
/// \brief Set the priority of an item or insert it, if it is |
|
| 247 |
/// not stored in the heap. |
|
| 248 |
/// |
|
| 249 |
/// This method sets the priority of the given item if it is |
|
| 250 |
/// already stored in the heap. Otherwise it inserts the given |
|
| 251 |
/// item into the heap with the given priority. |
|
| 252 |
/// \param item The item. |
|
| 253 |
/// \param prio The priority. |
|
| 254 |
void set (const Item& item, const Prio& prio) {
|
|
| 255 |
int i=_iim[item]; |
|
| 256 |
if ( i >= 0 && _data[i].in ) {
|
|
| 257 |
if ( _comp(prio, _data[i].prio) ) decrease(item, prio); |
|
| 258 |
if ( _comp(_data[i].prio, prio) ) increase(item, prio); |
|
| 259 |
} else push(item, prio); |
|
| 260 |
} |
|
| 261 |
|
|
| 262 |
/// \brief Decrease the priority of an item to the given value. |
|
| 263 |
/// |
|
| 264 |
/// This function decreases the priority of an item to the given value. |
|
| 265 |
/// \param item The item. |
|
| 266 |
/// \param prio The priority. |
|
| 267 |
/// \pre \e item must be stored in the heap with priority at least \e prio. |
|
| 268 |
void decrease (const Item& item, const Prio& prio) {
|
|
| 269 |
int i=_iim[item]; |
|
| 270 |
_data[i].prio=prio; |
|
| 271 |
int p=_data[i].parent; |
|
| 272 |
|
|
| 273 |
if ( p!=-1 && _comp(prio, _data[p].prio) ) {
|
|
| 274 |
cut(i,p); |
|
| 275 |
cascade(p); |
|
| 276 |
} |
|
| 277 |
if ( _comp(prio, _data[_minimum].prio) ) _minimum=i; |
|
| 278 |
} |
|
| 279 |
|
|
| 280 |
/// \brief Increase the priority of an item to the given value. |
|
| 281 |
/// |
|
| 282 |
/// This function increases the priority of an item to the given value. |
|
| 283 |
/// \param item The item. |
|
| 284 |
/// \param prio The priority. |
|
| 285 |
/// \pre \e item must be stored in the heap with priority at most \e prio. |
|
| 286 |
void increase (const Item& item, const Prio& prio) {
|
|
| 287 |
erase(item); |
|
| 288 |
push(item, prio); |
|
| 289 |
} |
|
| 290 |
|
|
| 291 |
/// \brief Return the state of an item. |
|
| 292 |
/// |
|
| 293 |
/// This method returns \c PRE_HEAP if the given item has never |
|
| 294 |
/// been in the heap, \c IN_HEAP if it is in the heap at the moment, |
|
| 295 |
/// and \c POST_HEAP otherwise. |
|
| 296 |
/// In the latter case it is possible that the item will get back |
|
| 297 |
/// to the heap again. |
|
| 298 |
/// \param item The item. |
|
| 299 |
State state(const Item &item) const {
|
|
| 300 |
int i=_iim[item]; |
|
| 301 |
if( i>=0 ) {
|
|
| 302 |
if ( _data[i].in ) i=0; |
|
| 303 |
else i=-2; |
|
| 304 |
} |
|
| 305 |
return State(i); |
|
| 306 |
} |
|
| 307 |
|
|
| 308 |
/// \brief Set the state of an item in the heap. |
|
| 309 |
/// |
|
| 310 |
/// This function sets the state of the given item in the heap. |
|
| 311 |
/// It can be used to manually clear the heap when it is important |
|
| 312 |
/// to achive better time complexity. |
|
| 313 |
/// \param i The item. |
|
| 314 |
/// \param st The state. It should not be \c IN_HEAP. |
|
| 315 |
void state(const Item& i, State st) {
|
|
| 316 |
switch (st) {
|
|
| 317 |
case POST_HEAP: |
|
| 318 |
case PRE_HEAP: |
|
| 319 |
if (state(i) == IN_HEAP) {
|
|
| 320 |
erase(i); |
|
| 321 |
} |
|
| 322 |
_iim[i] = st; |
|
| 323 |
break; |
|
| 324 |
case IN_HEAP: |
|
| 325 |
break; |
|
| 326 |
} |
|
| 327 |
} |
|
| 328 |
|
|
| 329 |
private: |
|
| 330 |
|
|
| 331 |
void balance() {
|
|
| 332 |
|
|
| 333 |
int maxdeg=int( std::floor( 2.08*log(double(_data.size()))))+1; |
|
| 334 |
|
|
| 335 |
std::vector<int> A(maxdeg,-1); |
|
| 336 |
|
|
| 337 |
/* |
|
| 338 |
*Recall that now minimum does not point to the minimum prio element. |
|
| 339 |
*We set minimum to this during balance(). |
|
| 340 |
*/ |
|
| 341 |
int anchor=_data[_minimum].left_neighbor; |
|
| 342 |
int next=_minimum; |
|
| 343 |
bool end=false; |
|
| 344 |
|
|
| 345 |
do {
|
|
| 346 |
int active=next; |
|
| 347 |
if ( anchor==active ) end=true; |
|
| 348 |
int d=_data[active].degree; |
|
| 349 |
next=_data[active].right_neighbor; |
|
| 350 |
|
|
| 351 |
while (A[d]!=-1) {
|
|
| 352 |
if( _comp(_data[active].prio, _data[A[d]].prio) ) {
|
|
| 353 |
fuse(active,A[d]); |
|
| 354 |
} else {
|
|
| 355 |
fuse(A[d],active); |
|
| 356 |
active=A[d]; |
|
| 357 |
} |
|
| 358 |
A[d]=-1; |
|
| 359 |
++d; |
|
| 360 |
} |
|
| 361 |
A[d]=active; |
|
| 362 |
} while ( !end ); |
|
| 363 |
|
|
| 364 |
|
|
| 365 |
while ( _data[_minimum].parent >=0 ) |
|
| 366 |
_minimum=_data[_minimum].parent; |
|
| 367 |
int s=_minimum; |
|
| 368 |
int m=_minimum; |
|
| 369 |
do {
|
|
| 370 |
if ( _comp(_data[s].prio, _data[_minimum].prio) ) _minimum=s; |
|
| 371 |
s=_data[s].right_neighbor; |
|
| 372 |
} while ( s != m ); |
|
| 373 |
} |
|
| 374 |
|
|
| 375 |
void makeRoot(int c) {
|
|
| 376 |
int s=c; |
|
| 377 |
do {
|
|
| 378 |
_data[s].parent=-1; |
|
| 379 |
s=_data[s].right_neighbor; |
|
| 380 |
} while ( s != c ); |
|
| 381 |
} |
|
| 382 |
|
|
| 383 |
void cut(int a, int b) {
|
|
| 384 |
/* |
|
| 385 |
*Replacing a from the children of b. |
|
| 386 |
*/ |
|
| 387 |
--_data[b].degree; |
|
| 388 |
|
|
| 389 |
if ( _data[b].degree !=0 ) {
|
|
| 390 |
int child=_data[b].child; |
|
| 391 |
if ( child==a ) |
|
| 392 |
_data[b].child=_data[child].right_neighbor; |
|
| 393 |
unlace(a); |
|
| 394 |
} |
|
| 395 |
|
|
| 396 |
|
|
| 397 |
/*Lacing a to the roots.*/ |
|
| 398 |
int right=_data[_minimum].right_neighbor; |
|
| 399 |
_data[_minimum].right_neighbor=a; |
|
| 400 |
_data[a].left_neighbor=_minimum; |
|
| 401 |
_data[a].right_neighbor=right; |
|
| 402 |
_data[right].left_neighbor=a; |
|
| 403 |
|
|
| 404 |
_data[a].parent=-1; |
|
| 405 |
_data[a].marked=false; |
|
| 406 |
} |
|
| 407 |
|
|
| 408 |
void cascade(int a) {
|
|
| 409 |
if ( _data[a].parent!=-1 ) {
|
|
| 410 |
int p=_data[a].parent; |
|
| 411 |
|
|
| 412 |
if ( _data[a].marked==false ) _data[a].marked=true; |
|
| 413 |
else {
|
|
| 414 |
cut(a,p); |
|
| 415 |
cascade(p); |
|
| 416 |
} |
|
| 417 |
} |
|
| 418 |
} |
|
| 419 |
|
|
| 420 |
void fuse(int a, int b) {
|
|
| 421 |
unlace(b); |
|
| 422 |
|
|
| 423 |
/*Lacing b under a.*/ |
|
| 424 |
_data[b].parent=a; |
|
| 425 |
|
|
| 426 |
if (_data[a].degree==0) {
|
|
| 427 |
_data[b].left_neighbor=b; |
|
| 428 |
_data[b].right_neighbor=b; |
|
| 429 |
_data[a].child=b; |
|
| 430 |
} else {
|
|
| 431 |
int child=_data[a].child; |
|
| 432 |
int last_child=_data[child].left_neighbor; |
|
| 433 |
_data[child].left_neighbor=b; |
|
| 434 |
_data[b].right_neighbor=child; |
|
| 435 |
_data[last_child].right_neighbor=b; |
|
| 436 |
_data[b].left_neighbor=last_child; |
|
| 437 |
} |
|
| 438 |
|
|
| 439 |
++_data[a].degree; |
|
| 440 |
|
|
| 441 |
_data[b].marked=false; |
|
| 442 |
} |
|
| 443 |
|
|
| 444 |
/* |
|
| 445 |
*It is invoked only if a has siblings. |
|
| 446 |
*/ |
|
| 447 |
void unlace(int a) {
|
|
| 448 |
int leftn=_data[a].left_neighbor; |
|
| 449 |
int rightn=_data[a].right_neighbor; |
|
| 450 |
_data[leftn].right_neighbor=rightn; |
|
| 451 |
_data[rightn].left_neighbor=leftn; |
|
| 452 |
} |
|
| 453 |
|
|
| 454 |
|
|
| 455 |
class Store {
|
|
| 456 |
friend class FibHeap; |
|
| 457 |
|
|
| 458 |
Item name; |
|
| 459 |
int parent; |
|
| 460 |
int left_neighbor; |
|
| 461 |
int right_neighbor; |
|
| 462 |
int child; |
|
| 463 |
int degree; |
|
| 464 |
bool marked; |
|
| 465 |
bool in; |
|
| 466 |
Prio prio; |
|
| 467 |
|
|
| 468 |
Store() : parent(-1), child(-1), degree(), marked(false), in(true) {}
|
|
| 469 |
}; |
|
| 470 |
}; |
|
| 471 |
|
|
| 472 |
} //namespace lemon |
|
| 473 |
|
|
| 474 |
#endif //LEMON_FIB_HEAP_H |
|
| 475 |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_FOURARY_HEAP_H |
|
| 20 |
#define LEMON_FOURARY_HEAP_H |
|
| 21 |
|
|
| 22 |
///\ingroup heaps |
|
| 23 |
///\file |
|
| 24 |
///\brief Fourary heap implementation. |
|
| 25 |
|
|
| 26 |
#include <vector> |
|
| 27 |
#include <utility> |
|
| 28 |
#include <functional> |
|
| 29 |
|
|
| 30 |
namespace lemon {
|
|
| 31 |
|
|
| 32 |
/// \ingroup heaps |
|
| 33 |
/// |
|
| 34 |
///\brief Fourary heap data structure. |
|
| 35 |
/// |
|
| 36 |
/// This class implements the \e fourary \e heap data structure. |
|
| 37 |
/// It fully conforms to the \ref concepts::Heap "heap concept". |
|
| 38 |
/// |
|
| 39 |
/// The fourary heap is a specialization of the \ref KaryHeap "K-ary heap" |
|
| 40 |
/// for <tt>K=4</tt>. It is similar to the \ref BinHeap "binary heap", |
|
| 41 |
/// but its nodes have at most four children, instead of two. |
|
| 42 |
/// |
|
| 43 |
/// \tparam PR Type of the priorities of the items. |
|
| 44 |
/// \tparam IM A read-writable item map with \c int values, used |
|
| 45 |
/// internally to handle the cross references. |
|
| 46 |
/// \tparam CMP A functor class for comparing the priorities. |
|
| 47 |
/// The default is \c std::less<PR>. |
|
| 48 |
/// |
|
| 49 |
///\sa BinHeap |
|
| 50 |
///\sa KaryHeap |
|
| 51 |
#ifdef DOXYGEN |
|
| 52 |
template <typename PR, typename IM, typename CMP> |
|
| 53 |
#else |
|
| 54 |
template <typename PR, typename IM, typename CMP = std::less<PR> > |
|
| 55 |
#endif |
|
| 56 |
class FouraryHeap {
|
|
| 57 |
public: |
|
| 58 |
/// Type of the item-int map. |
|
| 59 |
typedef IM ItemIntMap; |
|
| 60 |
/// Type of the priorities. |
|
| 61 |
typedef PR Prio; |
|
| 62 |
/// Type of the items stored in the heap. |
|
| 63 |
typedef typename ItemIntMap::Key Item; |
|
| 64 |
/// Type of the item-priority pairs. |
|
| 65 |
typedef std::pair<Item,Prio> Pair; |
|
| 66 |
/// Functor type for comparing the priorities. |
|
| 67 |
typedef CMP Compare; |
|
| 68 |
|
|
| 69 |
/// \brief Type to represent the states of the items. |
|
| 70 |
/// |
|
| 71 |
/// Each item has a state associated to it. It can be "in heap", |
|
| 72 |
/// "pre-heap" or "post-heap". The latter two are indifferent from the |
|
| 73 |
/// heap's point of view, but may be useful to the user. |
|
| 74 |
/// |
|
| 75 |
/// The item-int map must be initialized in such way that it assigns |
|
| 76 |
/// \c PRE_HEAP (<tt>-1</tt>) to any element to be put in the heap. |
|
| 77 |
enum State {
|
|
| 78 |
IN_HEAP = 0, ///< = 0. |
|
| 79 |
PRE_HEAP = -1, ///< = -1. |
|
| 80 |
POST_HEAP = -2 ///< = -2. |
|
| 81 |
}; |
|
| 82 |
|
|
| 83 |
private: |
|
| 84 |
std::vector<Pair> _data; |
|
| 85 |
Compare _comp; |
|
| 86 |
ItemIntMap &_iim; |
|
| 87 |
|
|
| 88 |
public: |
|
| 89 |
/// \brief Constructor. |
|
| 90 |
/// |
|
| 91 |
/// Constructor. |
|
| 92 |
/// \param map A map that assigns \c int values to the items. |
|
| 93 |
/// It is used internally to handle the cross references. |
|
| 94 |
/// The assigned value must be \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 95 |
explicit FouraryHeap(ItemIntMap &map) : _iim(map) {}
|
|
| 96 |
|
|
| 97 |
/// \brief Constructor. |
|
| 98 |
/// |
|
| 99 |
/// Constructor. |
|
| 100 |
/// \param map A map that assigns \c int values to the items. |
|
| 101 |
/// It is used internally to handle the cross references. |
|
| 102 |
/// The assigned value must be \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 103 |
/// \param comp The function object used for comparing the priorities. |
|
| 104 |
FouraryHeap(ItemIntMap &map, const Compare &comp) |
|
| 105 |
: _iim(map), _comp(comp) {}
|
|
| 106 |
|
|
| 107 |
/// \brief The number of items stored in the heap. |
|
| 108 |
/// |
|
| 109 |
/// This function returns the number of items stored in the heap. |
|
| 110 |
int size() const { return _data.size(); }
|
|
| 111 |
|
|
| 112 |
/// \brief Check if the heap is empty. |
|
| 113 |
/// |
|
| 114 |
/// This function returns \c true if the heap is empty. |
|
| 115 |
bool empty() const { return _data.empty(); }
|
|
| 116 |
|
|
| 117 |
/// \brief Make the heap empty. |
|
| 118 |
/// |
|
| 119 |
/// This functon makes the heap empty. |
|
| 120 |
/// It does not change the cross reference map. If you want to reuse |
|
| 121 |
/// a heap that is not surely empty, you should first clear it and |
|
| 122 |
/// then you should set the cross reference map to \c PRE_HEAP |
|
| 123 |
/// for each item. |
|
| 124 |
void clear() { _data.clear(); }
|
|
| 125 |
|
|
| 126 |
private: |
|
| 127 |
static int parent(int i) { return (i-1)/4; }
|
|
| 128 |
static int firstChild(int i) { return 4*i+1; }
|
|
| 129 |
|
|
| 130 |
bool less(const Pair &p1, const Pair &p2) const {
|
|
| 131 |
return _comp(p1.second, p2.second); |
|
| 132 |
} |
|
| 133 |
|
|
| 134 |
void bubbleUp(int hole, Pair p) {
|
|
| 135 |
int par = parent(hole); |
|
| 136 |
while( hole>0 && less(p,_data[par]) ) {
|
|
| 137 |
move(_data[par],hole); |
|
| 138 |
hole = par; |
|
| 139 |
par = parent(hole); |
|
| 140 |
} |
|
| 141 |
move(p, hole); |
|
| 142 |
} |
|
| 143 |
|
|
| 144 |
void bubbleDown(int hole, Pair p, int length) {
|
|
| 145 |
if( length>1 ) {
|
|
| 146 |
int child = firstChild(hole); |
|
| 147 |
while( child+3<length ) {
|
|
| 148 |
int min=child; |
|
| 149 |
if( less(_data[++child], _data[min]) ) min=child; |
|
| 150 |
if( less(_data[++child], _data[min]) ) min=child; |
|
| 151 |
if( less(_data[++child], _data[min]) ) min=child; |
|
| 152 |
if( !less(_data[min], p) ) |
|
| 153 |
goto ok; |
|
| 154 |
move(_data[min], hole); |
|
| 155 |
hole = min; |
|
| 156 |
child = firstChild(hole); |
|
| 157 |
} |
|
| 158 |
if ( child<length ) {
|
|
| 159 |
int min = child; |
|
| 160 |
if( ++child<length && less(_data[child], _data[min]) ) min=child; |
|
| 161 |
if( ++child<length && less(_data[child], _data[min]) ) min=child; |
|
| 162 |
if( less(_data[min], p) ) {
|
|
| 163 |
move(_data[min], hole); |
|
| 164 |
hole = min; |
|
| 165 |
} |
|
| 166 |
} |
|
| 167 |
} |
|
| 168 |
ok: |
|
| 169 |
move(p, hole); |
|
| 170 |
} |
|
| 171 |
|
|
| 172 |
void move(const Pair &p, int i) {
|
|
| 173 |
_data[i] = p; |
|
| 174 |
_iim.set(p.first, i); |
|
| 175 |
} |
|
| 176 |
|
|
| 177 |
public: |
|
| 178 |
/// \brief Insert a pair of item and priority into the heap. |
|
| 179 |
/// |
|
| 180 |
/// This function inserts \c p.first to the heap with priority |
|
| 181 |
/// \c p.second. |
|
| 182 |
/// \param p The pair to insert. |
|
| 183 |
/// \pre \c p.first must not be stored in the heap. |
|
| 184 |
void push(const Pair &p) {
|
|
| 185 |
int n = _data.size(); |
|
| 186 |
_data.resize(n+1); |
|
| 187 |
bubbleUp(n, p); |
|
| 188 |
} |
|
| 189 |
|
|
| 190 |
/// \brief Insert an item into the heap with the given priority. |
|
| 191 |
/// |
|
| 192 |
/// This function inserts the given item into the heap with the |
|
| 193 |
/// given priority. |
|
| 194 |
/// \param i The item to insert. |
|
| 195 |
/// \param p The priority of the item. |
|
| 196 |
/// \pre \e i must not be stored in the heap. |
|
| 197 |
void push(const Item &i, const Prio &p) { push(Pair(i,p)); }
|
|
| 198 |
|
|
| 199 |
/// \brief Return the item having minimum priority. |
|
| 200 |
/// |
|
| 201 |
/// This function returns the item having minimum priority. |
|
| 202 |
/// \pre The heap must be non-empty. |
|
| 203 |
Item top() const { return _data[0].first; }
|
|
| 204 |
|
|
| 205 |
/// \brief The minimum priority. |
|
| 206 |
/// |
|
| 207 |
/// This function returns the minimum priority. |
|
| 208 |
/// \pre The heap must be non-empty. |
|
| 209 |
Prio prio() const { return _data[0].second; }
|
|
| 210 |
|
|
| 211 |
/// \brief Remove the item having minimum priority. |
|
| 212 |
/// |
|
| 213 |
/// This function removes the item having minimum priority. |
|
| 214 |
/// \pre The heap must be non-empty. |
|
| 215 |
void pop() {
|
|
| 216 |
int n = _data.size()-1; |
|
| 217 |
_iim.set(_data[0].first, POST_HEAP); |
|
| 218 |
if (n>0) bubbleDown(0, _data[n], n); |
|
| 219 |
_data.pop_back(); |
|
| 220 |
} |
|
| 221 |
|
|
| 222 |
/// \brief Remove the given item from the heap. |
|
| 223 |
/// |
|
| 224 |
/// This function removes the given item from the heap if it is |
|
| 225 |
/// already stored. |
|
| 226 |
/// \param i The item to delete. |
|
| 227 |
/// \pre \e i must be in the heap. |
|
| 228 |
void erase(const Item &i) {
|
|
| 229 |
int h = _iim[i]; |
|
| 230 |
int n = _data.size()-1; |
|
| 231 |
_iim.set(_data[h].first, POST_HEAP); |
|
| 232 |
if( h<n ) {
|
|
| 233 |
if( less(_data[parent(h)], _data[n]) ) |
|
| 234 |
bubbleDown(h, _data[n], n); |
|
| 235 |
else |
|
| 236 |
bubbleUp(h, _data[n]); |
|
| 237 |
} |
|
| 238 |
_data.pop_back(); |
|
| 239 |
} |
|
| 240 |
|
|
| 241 |
/// \brief The priority of the given item. |
|
| 242 |
/// |
|
| 243 |
/// This function returns the priority of the given item. |
|
| 244 |
/// \param i The item. |
|
| 245 |
/// \pre \e i must be in the heap. |
|
| 246 |
Prio operator[](const Item &i) const {
|
|
| 247 |
int idx = _iim[i]; |
|
| 248 |
return _data[idx].second; |
|
| 249 |
} |
|
| 250 |
|
|
| 251 |
/// \brief Set the priority of an item or insert it, if it is |
|
| 252 |
/// not stored in the heap. |
|
| 253 |
/// |
|
| 254 |
/// This method sets the priority of the given item if it is |
|
| 255 |
/// already stored in the heap. Otherwise it inserts the given |
|
| 256 |
/// item into the heap with the given priority. |
|
| 257 |
/// \param i The item. |
|
| 258 |
/// \param p The priority. |
|
| 259 |
void set(const Item &i, const Prio &p) {
|
|
| 260 |
int idx = _iim[i]; |
|
| 261 |
if( idx < 0 ) |
|
| 262 |
push(i,p); |
|
| 263 |
else if( _comp(p, _data[idx].second) ) |
|
| 264 |
bubbleUp(idx, Pair(i,p)); |
|
| 265 |
else |
|
| 266 |
bubbleDown(idx, Pair(i,p), _data.size()); |
|
| 267 |
} |
|
| 268 |
|
|
| 269 |
/// \brief Decrease the priority of an item to the given value. |
|
| 270 |
/// |
|
| 271 |
/// This function decreases the priority of an item to the given value. |
|
| 272 |
/// \param i The item. |
|
| 273 |
/// \param p The priority. |
|
| 274 |
/// \pre \e i must be stored in the heap with priority at least \e p. |
|
| 275 |
void decrease(const Item &i, const Prio &p) {
|
|
| 276 |
int idx = _iim[i]; |
|
| 277 |
bubbleUp(idx, Pair(i,p)); |
|
| 278 |
} |
|
| 279 |
|
|
| 280 |
/// \brief Increase the priority of an item to the given value. |
|
| 281 |
/// |
|
| 282 |
/// This function increases the priority of an item to the given value. |
|
| 283 |
/// \param i The item. |
|
| 284 |
/// \param p The priority. |
|
| 285 |
/// \pre \e i must be stored in the heap with priority at most \e p. |
|
| 286 |
void increase(const Item &i, const Prio &p) {
|
|
| 287 |
int idx = _iim[i]; |
|
| 288 |
bubbleDown(idx, Pair(i,p), _data.size()); |
|
| 289 |
} |
|
| 290 |
|
|
| 291 |
/// \brief Return the state of an item. |
|
| 292 |
/// |
|
| 293 |
/// This method returns \c PRE_HEAP if the given item has never |
|
| 294 |
/// been in the heap, \c IN_HEAP if it is in the heap at the moment, |
|
| 295 |
/// and \c POST_HEAP otherwise. |
|
| 296 |
/// In the latter case it is possible that the item will get back |
|
| 297 |
/// to the heap again. |
|
| 298 |
/// \param i The item. |
|
| 299 |
State state(const Item &i) const {
|
|
| 300 |
int s = _iim[i]; |
|
| 301 |
if (s>=0) s=0; |
|
| 302 |
return State(s); |
|
| 303 |
} |
|
| 304 |
|
|
| 305 |
/// \brief Set the state of an item in the heap. |
|
| 306 |
/// |
|
| 307 |
/// This function sets the state of the given item in the heap. |
|
| 308 |
/// It can be used to manually clear the heap when it is important |
|
| 309 |
/// to achive better time complexity. |
|
| 310 |
/// \param i The item. |
|
| 311 |
/// \param st The state. It should not be \c IN_HEAP. |
|
| 312 |
void state(const Item& i, State st) {
|
|
| 313 |
switch (st) {
|
|
| 314 |
case POST_HEAP: |
|
| 315 |
case PRE_HEAP: |
|
| 316 |
if (state(i) == IN_HEAP) erase(i); |
|
| 317 |
_iim[i] = st; |
|
| 318 |
break; |
|
| 319 |
case IN_HEAP: |
|
| 320 |
break; |
|
| 321 |
} |
|
| 322 |
} |
|
| 323 |
|
|
| 324 |
/// \brief Replace an item in the heap. |
|
| 325 |
/// |
|
| 326 |
/// This function replaces item \c i with item \c j. |
|
| 327 |
/// Item \c i must be in the heap, while \c j must be out of the heap. |
|
| 328 |
/// After calling this method, item \c i will be out of the |
|
| 329 |
/// heap and \c j will be in the heap with the same prioriority |
|
| 330 |
/// as item \c i had before. |
|
| 331 |
void replace(const Item& i, const Item& j) {
|
|
| 332 |
int idx = _iim[i]; |
|
| 333 |
_iim.set(i, _iim[j]); |
|
| 334 |
_iim.set(j, idx); |
|
| 335 |
_data[idx].first = j; |
|
| 336 |
} |
|
| 337 |
|
|
| 338 |
}; // class FouraryHeap |
|
| 339 |
|
|
| 340 |
} // namespace lemon |
|
| 341 |
|
|
| 342 |
#endif // LEMON_FOURARY_HEAP_H |
| 1 |
/* -*- C++ -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2008 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_GOMORY_HU_TREE_H |
|
| 20 |
#define LEMON_GOMORY_HU_TREE_H |
|
| 21 |
|
|
| 22 |
#include <limits> |
|
| 23 |
|
|
| 24 |
#include <lemon/core.h> |
|
| 25 |
#include <lemon/preflow.h> |
|
| 26 |
#include <lemon/concept_check.h> |
|
| 27 |
#include <lemon/concepts/maps.h> |
|
| 28 |
|
|
| 29 |
/// \ingroup min_cut |
|
| 30 |
/// \file |
|
| 31 |
/// \brief Gomory-Hu cut tree in graphs. |
|
| 32 |
|
|
| 33 |
namespace lemon {
|
|
| 34 |
|
|
| 35 |
/// \ingroup min_cut |
|
| 36 |
/// |
|
| 37 |
/// \brief Gomory-Hu cut tree algorithm |
|
| 38 |
/// |
|
| 39 |
/// The Gomory-Hu tree is a tree on the node set of a given graph, but it |
|
| 40 |
/// may contain edges which are not in the original graph. It has the |
|
| 41 |
/// property that the minimum capacity edge of the path between two nodes |
|
| 42 |
/// in this tree has the same weight as the minimum cut in the graph |
|
| 43 |
/// between these nodes. Moreover the components obtained by removing |
|
| 44 |
/// this edge from the tree determine the corresponding minimum cut. |
|
| 45 |
/// Therefore once this tree is computed, the minimum cut between any pair |
|
| 46 |
/// of nodes can easily be obtained. |
|
| 47 |
/// |
|
| 48 |
/// The algorithm calculates \e n-1 distinct minimum cuts (currently with |
|
| 49 |
/// the \ref Preflow algorithm), thus it has \f$O(n^3\sqrt{e})\f$ overall
|
|
| 50 |
/// time complexity. It calculates a rooted Gomory-Hu tree. |
|
| 51 |
/// The structure of the tree and the edge weights can be |
|
| 52 |
/// obtained using \c predNode(), \c predValue() and \c rootDist(). |
|
| 53 |
/// The functions \c minCutMap() and \c minCutValue() calculate |
|
| 54 |
/// the minimum cut and the minimum cut value between any two nodes |
|
| 55 |
/// in the graph. You can also list (iterate on) the nodes and the |
|
| 56 |
/// edges of the cuts using \c MinCutNodeIt and \c MinCutEdgeIt. |
|
| 57 |
/// |
|
| 58 |
/// \tparam GR The type of the undirected graph the algorithm runs on. |
|
| 59 |
/// \tparam CAP The type of the edge map containing the capacities. |
|
| 60 |
/// The default map type is \ref concepts::Graph::EdgeMap "GR::EdgeMap<int>". |
|
| 61 |
#ifdef DOXYGEN |
|
| 62 |
template <typename GR, |
|
| 63 |
typename CAP> |
|
| 64 |
#else |
|
| 65 |
template <typename GR, |
|
| 66 |
typename CAP = typename GR::template EdgeMap<int> > |
|
| 67 |
#endif |
|
| 68 |
class GomoryHu {
|
|
| 69 |
public: |
|
| 70 |
|
|
| 71 |
/// The graph type of the algorithm |
|
| 72 |
typedef GR Graph; |
|
| 73 |
/// The capacity map type of the algorithm |
|
| 74 |
typedef CAP Capacity; |
|
| 75 |
/// The value type of capacities |
|
| 76 |
typedef typename Capacity::Value Value; |
|
| 77 |
|
|
| 78 |
private: |
|
| 79 |
|
|
| 80 |
TEMPLATE_GRAPH_TYPEDEFS(Graph); |
|
| 81 |
|
|
| 82 |
const Graph& _graph; |
|
| 83 |
const Capacity& _capacity; |
|
| 84 |
|
|
| 85 |
Node _root; |
|
| 86 |
typename Graph::template NodeMap<Node>* _pred; |
|
| 87 |
typename Graph::template NodeMap<Value>* _weight; |
|
| 88 |
typename Graph::template NodeMap<int>* _order; |
|
| 89 |
|
|
| 90 |
void createStructures() {
|
|
| 91 |
if (!_pred) {
|
|
| 92 |
_pred = new typename Graph::template NodeMap<Node>(_graph); |
|
| 93 |
} |
|
| 94 |
if (!_weight) {
|
|
| 95 |
_weight = new typename Graph::template NodeMap<Value>(_graph); |
|
| 96 |
} |
|
| 97 |
if (!_order) {
|
|
| 98 |
_order = new typename Graph::template NodeMap<int>(_graph); |
|
| 99 |
} |
|
| 100 |
} |
|
| 101 |
|
|
| 102 |
void destroyStructures() {
|
|
| 103 |
if (_pred) {
|
|
| 104 |
delete _pred; |
|
| 105 |
} |
|
| 106 |
if (_weight) {
|
|
| 107 |
delete _weight; |
|
| 108 |
} |
|
| 109 |
if (_order) {
|
|
| 110 |
delete _order; |
|
| 111 |
} |
|
| 112 |
} |
|
| 113 |
|
|
| 114 |
public: |
|
| 115 |
|
|
| 116 |
/// \brief Constructor |
|
| 117 |
/// |
|
| 118 |
/// Constructor. |
|
| 119 |
/// \param graph The undirected graph the algorithm runs on. |
|
| 120 |
/// \param capacity The edge capacity map. |
|
| 121 |
GomoryHu(const Graph& graph, const Capacity& capacity) |
|
| 122 |
: _graph(graph), _capacity(capacity), |
|
| 123 |
_pred(0), _weight(0), _order(0) |
|
| 124 |
{
|
|
| 125 |
checkConcept<concepts::ReadMap<Edge, Value>, Capacity>(); |
|
| 126 |
} |
|
| 127 |
|
|
| 128 |
|
|
| 129 |
/// \brief Destructor |
|
| 130 |
/// |
|
| 131 |
/// Destructor. |
|
| 132 |
~GomoryHu() {
|
|
| 133 |
destroyStructures(); |
|
| 134 |
} |
|
| 135 |
|
|
| 136 |
private: |
|
| 137 |
|
|
| 138 |
// Initialize the internal data structures |
|
| 139 |
void init() {
|
|
| 140 |
createStructures(); |
|
| 141 |
|
|
| 142 |
_root = NodeIt(_graph); |
|
| 143 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
|
| 144 |
(*_pred)[n] = _root; |
|
| 145 |
(*_order)[n] = -1; |
|
| 146 |
} |
|
| 147 |
(*_pred)[_root] = INVALID; |
|
| 148 |
(*_weight)[_root] = std::numeric_limits<Value>::max(); |
|
| 149 |
} |
|
| 150 |
|
|
| 151 |
|
|
| 152 |
// Start the algorithm |
|
| 153 |
void start() {
|
|
| 154 |
Preflow<Graph, Capacity> fa(_graph, _capacity, _root, INVALID); |
|
| 155 |
|
|
| 156 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
|
| 157 |
if (n == _root) continue; |
|
| 158 |
|
|
| 159 |
Node pn = (*_pred)[n]; |
|
| 160 |
fa.source(n); |
|
| 161 |
fa.target(pn); |
|
| 162 |
|
|
| 163 |
fa.runMinCut(); |
|
| 164 |
|
|
| 165 |
(*_weight)[n] = fa.flowValue(); |
|
| 166 |
|
|
| 167 |
for (NodeIt nn(_graph); nn != INVALID; ++nn) {
|
|
| 168 |
if (nn != n && fa.minCut(nn) && (*_pred)[nn] == pn) {
|
|
| 169 |
(*_pred)[nn] = n; |
|
| 170 |
} |
|
| 171 |
} |
|
| 172 |
if ((*_pred)[pn] != INVALID && fa.minCut((*_pred)[pn])) {
|
|
| 173 |
(*_pred)[n] = (*_pred)[pn]; |
|
| 174 |
(*_pred)[pn] = n; |
|
| 175 |
(*_weight)[n] = (*_weight)[pn]; |
|
| 176 |
(*_weight)[pn] = fa.flowValue(); |
|
| 177 |
} |
|
| 178 |
} |
|
| 179 |
|
|
| 180 |
(*_order)[_root] = 0; |
|
| 181 |
int index = 1; |
|
| 182 |
|
|
| 183 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
|
| 184 |
std::vector<Node> st; |
|
| 185 |
Node nn = n; |
|
| 186 |
while ((*_order)[nn] == -1) {
|
|
| 187 |
st.push_back(nn); |
|
| 188 |
nn = (*_pred)[nn]; |
|
| 189 |
} |
|
| 190 |
while (!st.empty()) {
|
|
| 191 |
(*_order)[st.back()] = index++; |
|
| 192 |
st.pop_back(); |
|
| 193 |
} |
|
| 194 |
} |
|
| 195 |
} |
|
| 196 |
|
|
| 197 |
public: |
|
| 198 |
|
|
| 199 |
///\name Execution Control |
|
| 200 |
|
|
| 201 |
///@{
|
|
| 202 |
|
|
| 203 |
/// \brief Run the Gomory-Hu algorithm. |
|
| 204 |
/// |
|
| 205 |
/// This function runs the Gomory-Hu algorithm. |
|
| 206 |
void run() {
|
|
| 207 |
init(); |
|
| 208 |
start(); |
|
| 209 |
} |
|
| 210 |
|
|
| 211 |
/// @} |
|
| 212 |
|
|
| 213 |
///\name Query Functions |
|
| 214 |
///The results of the algorithm can be obtained using these |
|
| 215 |
///functions.\n |
|
| 216 |
///\ref run() should be called before using them.\n |
|
| 217 |
///See also \ref MinCutNodeIt and \ref MinCutEdgeIt. |
|
| 218 |
|
|
| 219 |
///@{
|
|
| 220 |
|
|
| 221 |
/// \brief Return the predecessor node in the Gomory-Hu tree. |
|
| 222 |
/// |
|
| 223 |
/// This function returns the predecessor node of the given node |
|
| 224 |
/// in the Gomory-Hu tree. |
|
| 225 |
/// If \c node is the root of the tree, then it returns \c INVALID. |
|
| 226 |
/// |
|
| 227 |
/// \pre \ref run() must be called before using this function. |
|
| 228 |
Node predNode(const Node& node) const {
|
|
| 229 |
return (*_pred)[node]; |
|
| 230 |
} |
|
| 231 |
|
|
| 232 |
/// \brief Return the weight of the predecessor edge in the |
|
| 233 |
/// Gomory-Hu tree. |
|
| 234 |
/// |
|
| 235 |
/// This function returns the weight of the predecessor edge of the |
|
| 236 |
/// given node in the Gomory-Hu tree. |
|
| 237 |
/// If \c node is the root of the tree, the result is undefined. |
|
| 238 |
/// |
|
| 239 |
/// \pre \ref run() must be called before using this function. |
|
| 240 |
Value predValue(const Node& node) const {
|
|
| 241 |
return (*_weight)[node]; |
|
| 242 |
} |
|
| 243 |
|
|
| 244 |
/// \brief Return the distance from the root node in the Gomory-Hu tree. |
|
| 245 |
/// |
|
| 246 |
/// This function returns the distance of the given node from the root |
|
| 247 |
/// node in the Gomory-Hu tree. |
|
| 248 |
/// |
|
| 249 |
/// \pre \ref run() must be called before using this function. |
|
| 250 |
int rootDist(const Node& node) const {
|
|
| 251 |
return (*_order)[node]; |
|
| 252 |
} |
|
| 253 |
|
|
| 254 |
/// \brief Return the minimum cut value between two nodes |
|
| 255 |
/// |
|
| 256 |
/// This function returns the minimum cut value between the nodes |
|
| 257 |
/// \c s and \c t. |
|
| 258 |
/// It finds the nearest common ancestor of the given nodes in the |
|
| 259 |
/// Gomory-Hu tree and calculates the minimum weight edge on the |
|
| 260 |
/// paths to the ancestor. |
|
| 261 |
/// |
|
| 262 |
/// \pre \ref run() must be called before using this function. |
|
| 263 |
Value minCutValue(const Node& s, const Node& t) const {
|
|
| 264 |
Node sn = s, tn = t; |
|
| 265 |
Value value = std::numeric_limits<Value>::max(); |
|
| 266 |
|
|
| 267 |
while (sn != tn) {
|
|
| 268 |
if ((*_order)[sn] < (*_order)[tn]) {
|
|
| 269 |
if ((*_weight)[tn] <= value) value = (*_weight)[tn]; |
|
| 270 |
tn = (*_pred)[tn]; |
|
| 271 |
} else {
|
|
| 272 |
if ((*_weight)[sn] <= value) value = (*_weight)[sn]; |
|
| 273 |
sn = (*_pred)[sn]; |
|
| 274 |
} |
|
| 275 |
} |
|
| 276 |
return value; |
|
| 277 |
} |
|
| 278 |
|
|
| 279 |
/// \brief Return the minimum cut between two nodes |
|
| 280 |
/// |
|
| 281 |
/// This function returns the minimum cut between the nodes \c s and \c t |
|
| 282 |
/// in the \c cutMap parameter by setting the nodes in the component of |
|
| 283 |
/// \c s to \c true and the other nodes to \c false. |
|
| 284 |
/// |
|
| 285 |
/// For higher level interfaces see MinCutNodeIt and MinCutEdgeIt. |
|
| 286 |
/// |
|
| 287 |
/// \param s The base node. |
|
| 288 |
/// \param t The node you want to separate from node \c s. |
|
| 289 |
/// \param cutMap The cut will be returned in this map. |
|
| 290 |
/// It must be a \c bool (or convertible) \ref concepts::ReadWriteMap |
|
| 291 |
/// "ReadWriteMap" on the graph nodes. |
|
| 292 |
/// |
|
| 293 |
/// \return The value of the minimum cut between \c s and \c t. |
|
| 294 |
/// |
|
| 295 |
/// \pre \ref run() must be called before using this function. |
|
| 296 |
template <typename CutMap> |
|
| 297 |
Value minCutMap(const Node& s, ///< |
|
| 298 |
const Node& t, |
|
| 299 |
///< |
|
| 300 |
CutMap& cutMap |
|
| 301 |
///< |
|
| 302 |
) const {
|
|
| 303 |
Node sn = s, tn = t; |
|
| 304 |
bool s_root=false; |
|
| 305 |
Node rn = INVALID; |
|
| 306 |
Value value = std::numeric_limits<Value>::max(); |
|
| 307 |
|
|
| 308 |
while (sn != tn) {
|
|
| 309 |
if ((*_order)[sn] < (*_order)[tn]) {
|
|
| 310 |
if ((*_weight)[tn] <= value) {
|
|
| 311 |
rn = tn; |
|
| 312 |
s_root = false; |
|
| 313 |
value = (*_weight)[tn]; |
|
| 314 |
} |
|
| 315 |
tn = (*_pred)[tn]; |
|
| 316 |
} else {
|
|
| 317 |
if ((*_weight)[sn] <= value) {
|
|
| 318 |
rn = sn; |
|
| 319 |
s_root = true; |
|
| 320 |
value = (*_weight)[sn]; |
|
| 321 |
} |
|
| 322 |
sn = (*_pred)[sn]; |
|
| 323 |
} |
|
| 324 |
} |
|
| 325 |
|
|
| 326 |
typename Graph::template NodeMap<bool> reached(_graph, false); |
|
| 327 |
reached[_root] = true; |
|
| 328 |
cutMap.set(_root, !s_root); |
|
| 329 |
reached[rn] = true; |
|
| 330 |
cutMap.set(rn, s_root); |
|
| 331 |
|
|
| 332 |
std::vector<Node> st; |
|
| 333 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
|
| 334 |
st.clear(); |
|
| 335 |
Node nn = n; |
|
| 336 |
while (!reached[nn]) {
|
|
| 337 |
st.push_back(nn); |
|
| 338 |
nn = (*_pred)[nn]; |
|
| 339 |
} |
|
| 340 |
while (!st.empty()) {
|
|
| 341 |
cutMap.set(st.back(), cutMap[nn]); |
|
| 342 |
st.pop_back(); |
|
| 343 |
} |
|
| 344 |
} |
|
| 345 |
|
|
| 346 |
return value; |
|
| 347 |
} |
|
| 348 |
|
|
| 349 |
///@} |
|
| 350 |
|
|
| 351 |
friend class MinCutNodeIt; |
|
| 352 |
|
|
| 353 |
/// Iterate on the nodes of a minimum cut |
|
| 354 |
|
|
| 355 |
/// This iterator class lists the nodes of a minimum cut found by |
|
| 356 |
/// GomoryHu. Before using it, you must allocate a GomoryHu class |
|
| 357 |
/// and call its \ref GomoryHu::run() "run()" method. |
|
| 358 |
/// |
|
| 359 |
/// This example counts the nodes in the minimum cut separating \c s from |
|
| 360 |
/// \c t. |
|
| 361 |
/// \code |
|
| 362 |
/// GomoryHu<Graph> gom(g, capacities); |
|
| 363 |
/// gom.run(); |
|
| 364 |
/// int cnt=0; |
|
| 365 |
/// for(GomoryHu<Graph>::MinCutNodeIt n(gom,s,t); n!=INVALID; ++n) ++cnt; |
|
| 366 |
/// \endcode |
|
| 367 |
class MinCutNodeIt |
|
| 368 |
{
|
|
| 369 |
bool _side; |
|
| 370 |
typename Graph::NodeIt _node_it; |
|
| 371 |
typename Graph::template NodeMap<bool> _cut; |
|
| 372 |
public: |
|
| 373 |
/// Constructor |
|
| 374 |
|
|
| 375 |
/// Constructor. |
|
| 376 |
/// |
|
| 377 |
MinCutNodeIt(GomoryHu const &gomory, |
|
| 378 |
///< The GomoryHu class. You must call its |
|
| 379 |
/// run() method |
|
| 380 |
/// before initializing this iterator. |
|
| 381 |
const Node& s, ///< The base node. |
|
| 382 |
const Node& t, |
|
| 383 |
///< The node you want to separate from node \c s. |
|
| 384 |
bool side=true |
|
| 385 |
///< If it is \c true (default) then the iterator lists |
|
| 386 |
/// the nodes of the component containing \c s, |
|
| 387 |
/// otherwise it lists the other component. |
|
| 388 |
/// \note As the minimum cut is not always unique, |
|
| 389 |
/// \code |
|
| 390 |
/// MinCutNodeIt(gomory, s, t, true); |
|
| 391 |
/// \endcode |
|
| 392 |
/// and |
|
| 393 |
/// \code |
|
| 394 |
/// MinCutNodeIt(gomory, t, s, false); |
|
| 395 |
/// \endcode |
|
| 396 |
/// does not necessarily give the same set of nodes. |
|
| 397 |
/// However it is ensured that |
|
| 398 |
/// \code |
|
| 399 |
/// MinCutNodeIt(gomory, s, t, true); |
|
| 400 |
/// \endcode |
|
| 401 |
/// and |
|
| 402 |
/// \code |
|
| 403 |
/// MinCutNodeIt(gomory, s, t, false); |
|
| 404 |
/// \endcode |
|
| 405 |
/// together list each node exactly once. |
|
| 406 |
) |
|
| 407 |
: _side(side), _cut(gomory._graph) |
|
| 408 |
{
|
|
| 409 |
gomory.minCutMap(s,t,_cut); |
|
| 410 |
for(_node_it=typename Graph::NodeIt(gomory._graph); |
|
| 411 |
_node_it!=INVALID && _cut[_node_it]!=_side; |
|
| 412 |
++_node_it) {}
|
|
| 413 |
} |
|
| 414 |
/// Conversion to \c Node |
|
| 415 |
|
|
| 416 |
/// Conversion to \c Node. |
|
| 417 |
/// |
|
| 418 |
operator typename Graph::Node() const |
|
| 419 |
{
|
|
| 420 |
return _node_it; |
|
| 421 |
} |
|
| 422 |
bool operator==(Invalid) { return _node_it==INVALID; }
|
|
| 423 |
bool operator!=(Invalid) { return _node_it!=INVALID; }
|
|
| 424 |
/// Next node |
|
| 425 |
|
|
| 426 |
/// Next node. |
|
| 427 |
/// |
|
| 428 |
MinCutNodeIt &operator++() |
|
| 429 |
{
|
|
| 430 |
for(++_node_it;_node_it!=INVALID&&_cut[_node_it]!=_side;++_node_it) {}
|
|
| 431 |
return *this; |
|
| 432 |
} |
|
| 433 |
/// Postfix incrementation |
|
| 434 |
|
|
| 435 |
/// Postfix incrementation. |
|
| 436 |
/// |
|
| 437 |
/// \warning This incrementation |
|
| 438 |
/// returns a \c Node, not a \c MinCutNodeIt, as one may |
|
| 439 |
/// expect. |
|
| 440 |
typename Graph::Node operator++(int) |
|
| 441 |
{
|
|
| 442 |
typename Graph::Node n=*this; |
|
| 443 |
++(*this); |
|
| 444 |
return n; |
|
| 445 |
} |
|
| 446 |
}; |
|
| 447 |
|
|
| 448 |
friend class MinCutEdgeIt; |
|
| 449 |
|
|
| 450 |
/// Iterate on the edges of a minimum cut |
|
| 451 |
|
|
| 452 |
/// This iterator class lists the edges of a minimum cut found by |
|
| 453 |
/// GomoryHu. Before using it, you must allocate a GomoryHu class |
|
| 454 |
/// and call its \ref GomoryHu::run() "run()" method. |
|
| 455 |
/// |
|
| 456 |
/// This example computes the value of the minimum cut separating \c s from |
|
| 457 |
/// \c t. |
|
| 458 |
/// \code |
|
| 459 |
/// GomoryHu<Graph> gom(g, capacities); |
|
| 460 |
/// gom.run(); |
|
| 461 |
/// int value=0; |
|
| 462 |
/// for(GomoryHu<Graph>::MinCutEdgeIt e(gom,s,t); e!=INVALID; ++e) |
|
| 463 |
/// value+=capacities[e]; |
|
| 464 |
/// \endcode |
|
| 465 |
/// The result will be the same as the value returned by |
|
| 466 |
/// \ref GomoryHu::minCutValue() "gom.minCutValue(s,t)". |
|
| 467 |
class MinCutEdgeIt |
|
| 468 |
{
|
|
| 469 |
bool _side; |
|
| 470 |
const Graph &_graph; |
|
| 471 |
typename Graph::NodeIt _node_it; |
|
| 472 |
typename Graph::OutArcIt _arc_it; |
|
| 473 |
typename Graph::template NodeMap<bool> _cut; |
|
| 474 |
void step() |
|
| 475 |
{
|
|
| 476 |
++_arc_it; |
|
| 477 |
while(_node_it!=INVALID && _arc_it==INVALID) |
|
| 478 |
{
|
|
| 479 |
for(++_node_it;_node_it!=INVALID&&!_cut[_node_it];++_node_it) {}
|
|
| 480 |
if(_node_it!=INVALID) |
|
| 481 |
_arc_it=typename Graph::OutArcIt(_graph,_node_it); |
|
| 482 |
} |
|
| 483 |
} |
|
| 484 |
|
|
| 485 |
public: |
|
| 486 |
/// Constructor |
|
| 487 |
|
|
| 488 |
/// Constructor. |
|
| 489 |
/// |
|
| 490 |
MinCutEdgeIt(GomoryHu const &gomory, |
|
| 491 |
///< The GomoryHu class. You must call its |
|
| 492 |
/// run() method |
|
| 493 |
/// before initializing this iterator. |
|
| 494 |
const Node& s, ///< The base node. |
|
| 495 |
const Node& t, |
|
| 496 |
///< The node you want to separate from node \c s. |
|
| 497 |
bool side=true |
|
| 498 |
///< If it is \c true (default) then the listed arcs |
|
| 499 |
/// will be oriented from the |
|
| 500 |
/// nodes of the component containing \c s, |
|
| 501 |
/// otherwise they will be oriented in the opposite |
|
| 502 |
/// direction. |
|
| 503 |
) |
|
| 504 |
: _graph(gomory._graph), _cut(_graph) |
|
| 505 |
{
|
|
| 506 |
gomory.minCutMap(s,t,_cut); |
|
| 507 |
if(!side) |
|
| 508 |
for(typename Graph::NodeIt n(_graph);n!=INVALID;++n) |
|
| 509 |
_cut[n]=!_cut[n]; |
|
| 510 |
|
|
| 511 |
for(_node_it=typename Graph::NodeIt(_graph); |
|
| 512 |
_node_it!=INVALID && !_cut[_node_it]; |
|
| 513 |
++_node_it) {}
|
|
| 514 |
_arc_it = _node_it!=INVALID ? |
|
| 515 |
typename Graph::OutArcIt(_graph,_node_it) : INVALID; |
|
| 516 |
while(_node_it!=INVALID && _arc_it == INVALID) |
|
| 517 |
{
|
|
| 518 |
for(++_node_it; _node_it!=INVALID&&!_cut[_node_it]; ++_node_it) {}
|
|
| 519 |
if(_node_it!=INVALID) |
|
| 520 |
_arc_it= typename Graph::OutArcIt(_graph,_node_it); |
|
| 521 |
} |
|
| 522 |
while(_arc_it!=INVALID && _cut[_graph.target(_arc_it)]) step(); |
|
| 523 |
} |
|
| 524 |
/// Conversion to \c Arc |
|
| 525 |
|
|
| 526 |
/// Conversion to \c Arc. |
|
| 527 |
/// |
|
| 528 |
operator typename Graph::Arc() const |
|
| 529 |
{
|
|
| 530 |
return _arc_it; |
|
| 531 |
} |
|
| 532 |
/// Conversion to \c Edge |
|
| 533 |
|
|
| 534 |
/// Conversion to \c Edge. |
|
| 535 |
/// |
|
| 536 |
operator typename Graph::Edge() const |
|
| 537 |
{
|
|
| 538 |
return _arc_it; |
|
| 539 |
} |
|
| 540 |
bool operator==(Invalid) { return _node_it==INVALID; }
|
|
| 541 |
bool operator!=(Invalid) { return _node_it!=INVALID; }
|
|
| 542 |
/// Next edge |
|
| 543 |
|
|
| 544 |
/// Next edge. |
|
| 545 |
/// |
|
| 546 |
MinCutEdgeIt &operator++() |
|
| 547 |
{
|
|
| 548 |
step(); |
|
| 549 |
while(_arc_it!=INVALID && _cut[_graph.target(_arc_it)]) step(); |
|
| 550 |
return *this; |
|
| 551 |
} |
|
| 552 |
/// Postfix incrementation |
|
| 553 |
|
|
| 554 |
/// Postfix incrementation. |
|
| 555 |
/// |
|
| 556 |
/// \warning This incrementation |
|
| 557 |
/// returns an \c Arc, not a \c MinCutEdgeIt, as one may expect. |
|
| 558 |
typename Graph::Arc operator++(int) |
|
| 559 |
{
|
|
| 560 |
typename Graph::Arc e=*this; |
|
| 561 |
++(*this); |
|
| 562 |
return e; |
|
| 563 |
} |
|
| 564 |
}; |
|
| 565 |
|
|
| 566 |
}; |
|
| 567 |
|
|
| 568 |
} |
|
| 569 |
|
|
| 570 |
#endif |
| 1 |
/* -*- C++ -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2008 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_HARTMANN_ORLIN_H |
|
| 20 |
#define LEMON_HARTMANN_ORLIN_H |
|
| 21 |
|
|
| 22 |
/// \ingroup min_mean_cycle |
|
| 23 |
/// |
|
| 24 |
/// \file |
|
| 25 |
/// \brief Hartmann-Orlin's algorithm for finding a minimum mean cycle. |
|
| 26 |
|
|
| 27 |
#include <vector> |
|
| 28 |
#include <limits> |
|
| 29 |
#include <lemon/core.h> |
|
| 30 |
#include <lemon/path.h> |
|
| 31 |
#include <lemon/tolerance.h> |
|
| 32 |
#include <lemon/connectivity.h> |
|
| 33 |
|
|
| 34 |
namespace lemon {
|
|
| 35 |
|
|
| 36 |
/// \brief Default traits class of HartmannOrlin algorithm. |
|
| 37 |
/// |
|
| 38 |
/// Default traits class of HartmannOrlin algorithm. |
|
| 39 |
/// \tparam GR The type of the digraph. |
|
| 40 |
/// \tparam LEN The type of the length map. |
|
| 41 |
/// It must conform to the \ref concepts::Rea_data "Rea_data" concept. |
|
| 42 |
#ifdef DOXYGEN |
|
| 43 |
template <typename GR, typename LEN> |
|
| 44 |
#else |
|
| 45 |
template <typename GR, typename LEN, |
|
| 46 |
bool integer = std::numeric_limits<typename LEN::Value>::is_integer> |
|
| 47 |
#endif |
|
| 48 |
struct HartmannOrlinDefaultTraits |
|
| 49 |
{
|
|
| 50 |
/// The type of the digraph |
|
| 51 |
typedef GR Digraph; |
|
| 52 |
/// The type of the length map |
|
| 53 |
typedef LEN LengthMap; |
|
| 54 |
/// The type of the arc lengths |
|
| 55 |
typedef typename LengthMap::Value Value; |
|
| 56 |
|
|
| 57 |
/// \brief The large value type used for internal computations |
|
| 58 |
/// |
|
| 59 |
/// The large value type used for internal computations. |
|
| 60 |
/// It is \c long \c long if the \c Value type is integer, |
|
| 61 |
/// otherwise it is \c double. |
|
| 62 |
/// \c Value must be convertible to \c LargeValue. |
|
| 63 |
typedef double LargeValue; |
|
| 64 |
|
|
| 65 |
/// The tolerance type used for internal computations |
|
| 66 |
typedef lemon::Tolerance<LargeValue> Tolerance; |
|
| 67 |
|
|
| 68 |
/// \brief The path type of the found cycles |
|
| 69 |
/// |
|
| 70 |
/// The path type of the found cycles. |
|
| 71 |
/// It must conform to the \ref lemon::concepts::Path "Path" concept |
|
| 72 |
/// and it must have an \c addFront() function. |
|
| 73 |
typedef lemon::Path<Digraph> Path; |
|
| 74 |
}; |
|
| 75 |
|
|
| 76 |
// Default traits class for integer value types |
|
| 77 |
template <typename GR, typename LEN> |
|
| 78 |
struct HartmannOrlinDefaultTraits<GR, LEN, true> |
|
| 79 |
{
|
|
| 80 |
typedef GR Digraph; |
|
| 81 |
typedef LEN LengthMap; |
|
| 82 |
typedef typename LengthMap::Value Value; |
|
| 83 |
#ifdef LEMON_HAVE_LONG_LONG |
|
| 84 |
typedef long long LargeValue; |
|
| 85 |
#else |
|
| 86 |
typedef long LargeValue; |
|
| 87 |
#endif |
|
| 88 |
typedef lemon::Tolerance<LargeValue> Tolerance; |
|
| 89 |
typedef lemon::Path<Digraph> Path; |
|
| 90 |
}; |
|
| 91 |
|
|
| 92 |
|
|
| 93 |
/// \addtogroup min_mean_cycle |
|
| 94 |
/// @{
|
|
| 95 |
|
|
| 96 |
/// \brief Implementation of the Hartmann-Orlin algorithm for finding |
|
| 97 |
/// a minimum mean cycle. |
|
| 98 |
/// |
|
| 99 |
/// This class implements the Hartmann-Orlin algorithm for finding |
|
| 100 |
/// a directed cycle of minimum mean length (cost) in a digraph |
|
| 101 |
/// \ref amo93networkflows, \ref dasdan98minmeancycle. |
|
| 102 |
/// It is an improved version of \ref Karp "Karp"'s original algorithm, |
|
| 103 |
/// it applies an efficient early termination scheme. |
|
| 104 |
/// It runs in time O(ne) and uses space O(n<sup>2</sup>+e). |
|
| 105 |
/// |
|
| 106 |
/// \tparam GR The type of the digraph the algorithm runs on. |
|
| 107 |
/// \tparam LEN The type of the length map. The default |
|
| 108 |
/// map type is \ref concepts::Digraph::ArcMap "GR::ArcMap<int>". |
|
| 109 |
#ifdef DOXYGEN |
|
| 110 |
template <typename GR, typename LEN, typename TR> |
|
| 111 |
#else |
|
| 112 |
template < typename GR, |
|
| 113 |
typename LEN = typename GR::template ArcMap<int>, |
|
| 114 |
typename TR = HartmannOrlinDefaultTraits<GR, LEN> > |
|
| 115 |
#endif |
|
| 116 |
class HartmannOrlin |
|
| 117 |
{
|
|
| 118 |
public: |
|
| 119 |
|
|
| 120 |
/// The type of the digraph |
|
| 121 |
typedef typename TR::Digraph Digraph; |
|
| 122 |
/// The type of the length map |
|
| 123 |
typedef typename TR::LengthMap LengthMap; |
|
| 124 |
/// The type of the arc lengths |
|
| 125 |
typedef typename TR::Value Value; |
|
| 126 |
|
|
| 127 |
/// \brief The large value type |
|
| 128 |
/// |
|
| 129 |
/// The large value type used for internal computations. |
|
| 130 |
/// Using the \ref HartmannOrlinDefaultTraits "default traits class", |
|
| 131 |
/// it is \c long \c long if the \c Value type is integer, |
|
| 132 |
/// otherwise it is \c double. |
|
| 133 |
typedef typename TR::LargeValue LargeValue; |
|
| 134 |
|
|
| 135 |
/// The tolerance type |
|
| 136 |
typedef typename TR::Tolerance Tolerance; |
|
| 137 |
|
|
| 138 |
/// \brief The path type of the found cycles |
|
| 139 |
/// |
|
| 140 |
/// The path type of the found cycles. |
|
| 141 |
/// Using the \ref HartmannOrlinDefaultTraits "default traits class", |
|
| 142 |
/// it is \ref lemon::Path "Path<Digraph>". |
|
| 143 |
typedef typename TR::Path Path; |
|
| 144 |
|
|
| 145 |
/// The \ref HartmannOrlinDefaultTraits "traits class" of the algorithm |
|
| 146 |
typedef TR Traits; |
|
| 147 |
|
|
| 148 |
private: |
|
| 149 |
|
|
| 150 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
|
| 151 |
|
|
| 152 |
// Data sturcture for path data |
|
| 153 |
struct PathData |
|
| 154 |
{
|
|
| 155 |
LargeValue dist; |
|
| 156 |
Arc pred; |
|
| 157 |
PathData(LargeValue d, Arc p = INVALID) : |
|
| 158 |
dist(d), pred(p) {}
|
|
| 159 |
}; |
|
| 160 |
|
|
| 161 |
typedef typename Digraph::template NodeMap<std::vector<PathData> > |
|
| 162 |
PathDataNodeMap; |
|
| 163 |
|
|
| 164 |
private: |
|
| 165 |
|
|
| 166 |
// The digraph the algorithm runs on |
|
| 167 |
const Digraph &_gr; |
|
| 168 |
// The length of the arcs |
|
| 169 |
const LengthMap &_length; |
|
| 170 |
|
|
| 171 |
// Data for storing the strongly connected components |
|
| 172 |
int _comp_num; |
|
| 173 |
typename Digraph::template NodeMap<int> _comp; |
|
| 174 |
std::vector<std::vector<Node> > _comp_nodes; |
|
| 175 |
std::vector<Node>* _nodes; |
|
| 176 |
typename Digraph::template NodeMap<std::vector<Arc> > _out_arcs; |
|
| 177 |
|
|
| 178 |
// Data for the found cycles |
|
| 179 |
bool _curr_found, _best_found; |
|
| 180 |
LargeValue _curr_length, _best_length; |
|
| 181 |
int _curr_size, _best_size; |
|
| 182 |
Node _curr_node, _best_node; |
|
| 183 |
int _curr_level, _best_level; |
|
| 184 |
|
|
| 185 |
Path *_cycle_path; |
|
| 186 |
bool _local_path; |
|
| 187 |
|
|
| 188 |
// Node map for storing path data |
|
| 189 |
PathDataNodeMap _data; |
|
| 190 |
// The processed nodes in the last round |
|
| 191 |
std::vector<Node> _process; |
|
| 192 |
|
|
| 193 |
Tolerance _tolerance; |
|
| 194 |
|
|
| 195 |
// Infinite constant |
|
| 196 |
const LargeValue INF; |
|
| 197 |
|
|
| 198 |
public: |
|
| 199 |
|
|
| 200 |
/// \name Named Template Parameters |
|
| 201 |
/// @{
|
|
| 202 |
|
|
| 203 |
template <typename T> |
|
| 204 |
struct SetLargeValueTraits : public Traits {
|
|
| 205 |
typedef T LargeValue; |
|
| 206 |
typedef lemon::Tolerance<T> Tolerance; |
|
| 207 |
}; |
|
| 208 |
|
|
| 209 |
/// \brief \ref named-templ-param "Named parameter" for setting |
|
| 210 |
/// \c LargeValue type. |
|
| 211 |
/// |
|
| 212 |
/// \ref named-templ-param "Named parameter" for setting \c LargeValue |
|
| 213 |
/// type. It is used for internal computations in the algorithm. |
|
| 214 |
template <typename T> |
|
| 215 |
struct SetLargeValue |
|
| 216 |
: public HartmannOrlin<GR, LEN, SetLargeValueTraits<T> > {
|
|
| 217 |
typedef HartmannOrlin<GR, LEN, SetLargeValueTraits<T> > Create; |
|
| 218 |
}; |
|
| 219 |
|
|
| 220 |
template <typename T> |
|
| 221 |
struct SetPathTraits : public Traits {
|
|
| 222 |
typedef T Path; |
|
| 223 |
}; |
|
| 224 |
|
|
| 225 |
/// \brief \ref named-templ-param "Named parameter" for setting |
|
| 226 |
/// \c %Path type. |
|
| 227 |
/// |
|
| 228 |
/// \ref named-templ-param "Named parameter" for setting the \c %Path |
|
| 229 |
/// type of the found cycles. |
|
| 230 |
/// It must conform to the \ref lemon::concepts::Path "Path" concept |
|
| 231 |
/// and it must have an \c addFront() function. |
|
| 232 |
template <typename T> |
|
| 233 |
struct SetPath |
|
| 234 |
: public HartmannOrlin<GR, LEN, SetPathTraits<T> > {
|
|
| 235 |
typedef HartmannOrlin<GR, LEN, SetPathTraits<T> > Create; |
|
| 236 |
}; |
|
| 237 |
|
|
| 238 |
/// @} |
|
| 239 |
|
|
| 240 |
public: |
|
| 241 |
|
|
| 242 |
/// \brief Constructor. |
|
| 243 |
/// |
|
| 244 |
/// The constructor of the class. |
|
| 245 |
/// |
|
| 246 |
/// \param digraph The digraph the algorithm runs on. |
|
| 247 |
/// \param length The lengths (costs) of the arcs. |
|
| 248 |
HartmannOrlin( const Digraph &digraph, |
|
| 249 |
const LengthMap &length ) : |
|
| 250 |
_gr(digraph), _length(length), _comp(digraph), _out_arcs(digraph), |
|
| 251 |
_best_found(false), _best_length(0), _best_size(1), |
|
| 252 |
_cycle_path(NULL), _local_path(false), _data(digraph), |
|
| 253 |
INF(std::numeric_limits<LargeValue>::has_infinity ? |
|
| 254 |
std::numeric_limits<LargeValue>::infinity() : |
|
| 255 |
std::numeric_limits<LargeValue>::max()) |
|
| 256 |
{}
|
|
| 257 |
|
|
| 258 |
/// Destructor. |
|
| 259 |
~HartmannOrlin() {
|
|
| 260 |
if (_local_path) delete _cycle_path; |
|
| 261 |
} |
|
| 262 |
|
|
| 263 |
/// \brief Set the path structure for storing the found cycle. |
|
| 264 |
/// |
|
| 265 |
/// This function sets an external path structure for storing the |
|
| 266 |
/// found cycle. |
|
| 267 |
/// |
|
| 268 |
/// If you don't call this function before calling \ref run() or |
|
| 269 |
/// \ref findMinMean(), it will allocate a local \ref Path "path" |
|
| 270 |
/// structure. The destuctor deallocates this automatically |
|
| 271 |
/// allocated object, of course. |
|
| 272 |
/// |
|
| 273 |
/// \note The algorithm calls only the \ref lemon::Path::addFront() |
|
| 274 |
/// "addFront()" function of the given path structure. |
|
| 275 |
/// |
|
| 276 |
/// \return <tt>(*this)</tt> |
|
| 277 |
HartmannOrlin& cycle(Path &path) {
|
|
| 278 |
if (_local_path) {
|
|
| 279 |
delete _cycle_path; |
|
| 280 |
_local_path = false; |
|
| 281 |
} |
|
| 282 |
_cycle_path = &path; |
|
| 283 |
return *this; |
|
| 284 |
} |
|
| 285 |
|
|
| 286 |
/// \brief Set the tolerance used by the algorithm. |
|
| 287 |
/// |
|
| 288 |
/// This function sets the tolerance object used by the algorithm. |
|
| 289 |
/// |
|
| 290 |
/// \return <tt>(*this)</tt> |
|
| 291 |
HartmannOrlin& tolerance(const Tolerance& tolerance) {
|
|
| 292 |
_tolerance = tolerance; |
|
| 293 |
return *this; |
|
| 294 |
} |
|
| 295 |
|
|
| 296 |
/// \brief Return a const reference to the tolerance. |
|
| 297 |
/// |
|
| 298 |
/// This function returns a const reference to the tolerance object |
|
| 299 |
/// used by the algorithm. |
|
| 300 |
const Tolerance& tolerance() const {
|
|
| 301 |
return _tolerance; |
|
| 302 |
} |
|
| 303 |
|
|
| 304 |
/// \name Execution control |
|
| 305 |
/// The simplest way to execute the algorithm is to call the \ref run() |
|
| 306 |
/// function.\n |
|
| 307 |
/// If you only need the minimum mean length, you may call |
|
| 308 |
/// \ref findMinMean(). |
|
| 309 |
|
|
| 310 |
/// @{
|
|
| 311 |
|
|
| 312 |
/// \brief Run the algorithm. |
|
| 313 |
/// |
|
| 314 |
/// This function runs the algorithm. |
|
| 315 |
/// It can be called more than once (e.g. if the underlying digraph |
|
| 316 |
/// and/or the arc lengths have been modified). |
|
| 317 |
/// |
|
| 318 |
/// \return \c true if a directed cycle exists in the digraph. |
|
| 319 |
/// |
|
| 320 |
/// \note <tt>mmc.run()</tt> is just a shortcut of the following code. |
|
| 321 |
/// \code |
|
| 322 |
/// return mmc.findMinMean() && mmc.findCycle(); |
|
| 323 |
/// \endcode |
|
| 324 |
bool run() {
|
|
| 325 |
return findMinMean() && findCycle(); |
|
| 326 |
} |
|
| 327 |
|
|
| 328 |
/// \brief Find the minimum cycle mean. |
|
| 329 |
/// |
|
| 330 |
/// This function finds the minimum mean length of the directed |
|
| 331 |
/// cycles in the digraph. |
|
| 332 |
/// |
|
| 333 |
/// \return \c true if a directed cycle exists in the digraph. |
|
| 334 |
bool findMinMean() {
|
|
| 335 |
// Initialization and find strongly connected components |
|
| 336 |
init(); |
|
| 337 |
findComponents(); |
|
| 338 |
|
|
| 339 |
// Find the minimum cycle mean in the components |
|
| 340 |
for (int comp = 0; comp < _comp_num; ++comp) {
|
|
| 341 |
if (!initComponent(comp)) continue; |
|
| 342 |
processRounds(); |
|
| 343 |
|
|
| 344 |
// Update the best cycle (global minimum mean cycle) |
|
| 345 |
if ( _curr_found && (!_best_found || |
|
| 346 |
_curr_length * _best_size < _best_length * _curr_size) ) {
|
|
| 347 |
_best_found = true; |
|
| 348 |
_best_length = _curr_length; |
|
| 349 |
_best_size = _curr_size; |
|
| 350 |
_best_node = _curr_node; |
|
| 351 |
_best_level = _curr_level; |
|
| 352 |
} |
|
| 353 |
} |
|
| 354 |
return _best_found; |
|
| 355 |
} |
|
| 356 |
|
|
| 357 |
/// \brief Find a minimum mean directed cycle. |
|
| 358 |
/// |
|
| 359 |
/// This function finds a directed cycle of minimum mean length |
|
| 360 |
/// in the digraph using the data computed by findMinMean(). |
|
| 361 |
/// |
|
| 362 |
/// \return \c true if a directed cycle exists in the digraph. |
|
| 363 |
/// |
|
| 364 |
/// \pre \ref findMinMean() must be called before using this function. |
|
| 365 |
bool findCycle() {
|
|
| 366 |
if (!_best_found) return false; |
|
| 367 |
IntNodeMap reached(_gr, -1); |
|
| 368 |
int r = _best_level + 1; |
|
| 369 |
Node u = _best_node; |
|
| 370 |
while (reached[u] < 0) {
|
|
| 371 |
reached[u] = --r; |
|
| 372 |
u = _gr.source(_data[u][r].pred); |
|
| 373 |
} |
|
| 374 |
r = reached[u]; |
|
| 375 |
Arc e = _data[u][r].pred; |
|
| 376 |
_cycle_path->addFront(e); |
|
| 377 |
_best_length = _length[e]; |
|
| 378 |
_best_size = 1; |
|
| 379 |
Node v; |
|
| 380 |
while ((v = _gr.source(e)) != u) {
|
|
| 381 |
e = _data[v][--r].pred; |
|
| 382 |
_cycle_path->addFront(e); |
|
| 383 |
_best_length += _length[e]; |
|
| 384 |
++_best_size; |
|
| 385 |
} |
|
| 386 |
return true; |
|
| 387 |
} |
|
| 388 |
|
|
| 389 |
/// @} |
|
| 390 |
|
|
| 391 |
/// \name Query Functions |
|
| 392 |
/// The results of the algorithm can be obtained using these |
|
| 393 |
/// functions.\n |
|
| 394 |
/// The algorithm should be executed before using them. |
|
| 395 |
|
|
| 396 |
/// @{
|
|
| 397 |
|
|
| 398 |
/// \brief Return the total length of the found cycle. |
|
| 399 |
/// |
|
| 400 |
/// This function returns the total length of the found cycle. |
|
| 401 |
/// |
|
| 402 |
/// \pre \ref run() or \ref findMinMean() must be called before |
|
| 403 |
/// using this function. |
|
| 404 |
LargeValue cycleLength() const {
|
|
| 405 |
return _best_length; |
|
| 406 |
} |
|
| 407 |
|
|
| 408 |
/// \brief Return the number of arcs on the found cycle. |
|
| 409 |
/// |
|
| 410 |
/// This function returns the number of arcs on the found cycle. |
|
| 411 |
/// |
|
| 412 |
/// \pre \ref run() or \ref findMinMean() must be called before |
|
| 413 |
/// using this function. |
|
| 414 |
int cycleArcNum() const {
|
|
| 415 |
return _best_size; |
|
| 416 |
} |
|
| 417 |
|
|
| 418 |
/// \brief Return the mean length of the found cycle. |
|
| 419 |
/// |
|
| 420 |
/// This function returns the mean length of the found cycle. |
|
| 421 |
/// |
|
| 422 |
/// \note <tt>alg.cycleMean()</tt> is just a shortcut of the |
|
| 423 |
/// following code. |
|
| 424 |
/// \code |
|
| 425 |
/// return static_cast<double>(alg.cycleLength()) / alg.cycleArcNum(); |
|
| 426 |
/// \endcode |
|
| 427 |
/// |
|
| 428 |
/// \pre \ref run() or \ref findMinMean() must be called before |
|
| 429 |
/// using this function. |
|
| 430 |
double cycleMean() const {
|
|
| 431 |
return static_cast<double>(_best_length) / _best_size; |
|
| 432 |
} |
|
| 433 |
|
|
| 434 |
/// \brief Return the found cycle. |
|
| 435 |
/// |
|
| 436 |
/// This function returns a const reference to the path structure |
|
| 437 |
/// storing the found cycle. |
|
| 438 |
/// |
|
| 439 |
/// \pre \ref run() or \ref findCycle() must be called before using |
|
| 440 |
/// this function. |
|
| 441 |
const Path& cycle() const {
|
|
| 442 |
return *_cycle_path; |
|
| 443 |
} |
|
| 444 |
|
|
| 445 |
///@} |
|
| 446 |
|
|
| 447 |
private: |
|
| 448 |
|
|
| 449 |
// Initialization |
|
| 450 |
void init() {
|
|
| 451 |
if (!_cycle_path) {
|
|
| 452 |
_local_path = true; |
|
| 453 |
_cycle_path = new Path; |
|
| 454 |
} |
|
| 455 |
_cycle_path->clear(); |
|
| 456 |
_best_found = false; |
|
| 457 |
_best_length = 0; |
|
| 458 |
_best_size = 1; |
|
| 459 |
_cycle_path->clear(); |
|
| 460 |
for (NodeIt u(_gr); u != INVALID; ++u) |
|
| 461 |
_data[u].clear(); |
|
| 462 |
} |
|
| 463 |
|
|
| 464 |
// Find strongly connected components and initialize _comp_nodes |
|
| 465 |
// and _out_arcs |
|
| 466 |
void findComponents() {
|
|
| 467 |
_comp_num = stronglyConnectedComponents(_gr, _comp); |
|
| 468 |
_comp_nodes.resize(_comp_num); |
|
| 469 |
if (_comp_num == 1) {
|
|
| 470 |
_comp_nodes[0].clear(); |
|
| 471 |
for (NodeIt n(_gr); n != INVALID; ++n) {
|
|
| 472 |
_comp_nodes[0].push_back(n); |
|
| 473 |
_out_arcs[n].clear(); |
|
| 474 |
for (OutArcIt a(_gr, n); a != INVALID; ++a) {
|
|
| 475 |
_out_arcs[n].push_back(a); |
|
| 476 |
} |
|
| 477 |
} |
|
| 478 |
} else {
|
|
| 479 |
for (int i = 0; i < _comp_num; ++i) |
|
| 480 |
_comp_nodes[i].clear(); |
|
| 481 |
for (NodeIt n(_gr); n != INVALID; ++n) {
|
|
| 482 |
int k = _comp[n]; |
|
| 483 |
_comp_nodes[k].push_back(n); |
|
| 484 |
_out_arcs[n].clear(); |
|
| 485 |
for (OutArcIt a(_gr, n); a != INVALID; ++a) {
|
|
| 486 |
if (_comp[_gr.target(a)] == k) _out_arcs[n].push_back(a); |
|
| 487 |
} |
|
| 488 |
} |
|
| 489 |
} |
|
| 490 |
} |
|
| 491 |
|
|
| 492 |
// Initialize path data for the current component |
|
| 493 |
bool initComponent(int comp) {
|
|
| 494 |
_nodes = &(_comp_nodes[comp]); |
|
| 495 |
int n = _nodes->size(); |
|
| 496 |
if (n < 1 || (n == 1 && _out_arcs[(*_nodes)[0]].size() == 0)) {
|
|
| 497 |
return false; |
|
| 498 |
} |
|
| 499 |
for (int i = 0; i < n; ++i) {
|
|
| 500 |
_data[(*_nodes)[i]].resize(n + 1, PathData(INF)); |
|
| 501 |
} |
|
| 502 |
return true; |
|
| 503 |
} |
|
| 504 |
|
|
| 505 |
// Process all rounds of computing path data for the current component. |
|
| 506 |
// _data[v][k] is the length of a shortest directed walk from the root |
|
| 507 |
// node to node v containing exactly k arcs. |
|
| 508 |
void processRounds() {
|
|
| 509 |
Node start = (*_nodes)[0]; |
|
| 510 |
_data[start][0] = PathData(0); |
|
| 511 |
_process.clear(); |
|
| 512 |
_process.push_back(start); |
|
| 513 |
|
|
| 514 |
int k, n = _nodes->size(); |
|
| 515 |
int next_check = 4; |
|
| 516 |
bool terminate = false; |
|
| 517 |
for (k = 1; k <= n && int(_process.size()) < n && !terminate; ++k) {
|
|
| 518 |
processNextBuildRound(k); |
|
| 519 |
if (k == next_check || k == n) {
|
|
| 520 |
terminate = checkTermination(k); |
|
| 521 |
next_check = next_check * 3 / 2; |
|
| 522 |
} |
|
| 523 |
} |
|
| 524 |
for ( ; k <= n && !terminate; ++k) {
|
|
| 525 |
processNextFullRound(k); |
|
| 526 |
if (k == next_check || k == n) {
|
|
| 527 |
terminate = checkTermination(k); |
|
| 528 |
next_check = next_check * 3 / 2; |
|
| 529 |
} |
|
| 530 |
} |
|
| 531 |
} |
|
| 532 |
|
|
| 533 |
// Process one round and rebuild _process |
|
| 534 |
void processNextBuildRound(int k) {
|
|
| 535 |
std::vector<Node> next; |
|
| 536 |
Node u, v; |
|
| 537 |
Arc e; |
|
| 538 |
LargeValue d; |
|
| 539 |
for (int i = 0; i < int(_process.size()); ++i) {
|
|
| 540 |
u = _process[i]; |
|
| 541 |
for (int j = 0; j < int(_out_arcs[u].size()); ++j) {
|
|
| 542 |
e = _out_arcs[u][j]; |
|
| 543 |
v = _gr.target(e); |
|
| 544 |
d = _data[u][k-1].dist + _length[e]; |
|
| 545 |
if (_tolerance.less(d, _data[v][k].dist)) {
|
|
| 546 |
if (_data[v][k].dist == INF) next.push_back(v); |
|
| 547 |
_data[v][k] = PathData(d, e); |
|
| 548 |
} |
|
| 549 |
} |
|
| 550 |
} |
|
| 551 |
_process.swap(next); |
|
| 552 |
} |
|
| 553 |
|
|
| 554 |
// Process one round using _nodes instead of _process |
|
| 555 |
void processNextFullRound(int k) {
|
|
| 556 |
Node u, v; |
|
| 557 |
Arc e; |
|
| 558 |
LargeValue d; |
|
| 559 |
for (int i = 0; i < int(_nodes->size()); ++i) {
|
|
| 560 |
u = (*_nodes)[i]; |
|
| 561 |
for (int j = 0; j < int(_out_arcs[u].size()); ++j) {
|
|
| 562 |
e = _out_arcs[u][j]; |
|
| 563 |
v = _gr.target(e); |
|
| 564 |
d = _data[u][k-1].dist + _length[e]; |
|
| 565 |
if (_tolerance.less(d, _data[v][k].dist)) {
|
|
| 566 |
_data[v][k] = PathData(d, e); |
|
| 567 |
} |
|
| 568 |
} |
|
| 569 |
} |
|
| 570 |
} |
|
| 571 |
|
|
| 572 |
// Check early termination |
|
| 573 |
bool checkTermination(int k) {
|
|
| 574 |
typedef std::pair<int, int> Pair; |
|
| 575 |
typename GR::template NodeMap<Pair> level(_gr, Pair(-1, 0)); |
|
| 576 |
typename GR::template NodeMap<LargeValue> pi(_gr); |
|
| 577 |
int n = _nodes->size(); |
|
| 578 |
LargeValue length; |
|
| 579 |
int size; |
|
| 580 |
Node u; |
|
| 581 |
|
|
| 582 |
// Search for cycles that are already found |
|
| 583 |
_curr_found = false; |
|
| 584 |
for (int i = 0; i < n; ++i) {
|
|
| 585 |
u = (*_nodes)[i]; |
|
| 586 |
if (_data[u][k].dist == INF) continue; |
|
| 587 |
for (int j = k; j >= 0; --j) {
|
|
| 588 |
if (level[u].first == i && level[u].second > 0) {
|
|
| 589 |
// A cycle is found |
|
| 590 |
length = _data[u][level[u].second].dist - _data[u][j].dist; |
|
| 591 |
size = level[u].second - j; |
|
| 592 |
if (!_curr_found || length * _curr_size < _curr_length * size) {
|
|
| 593 |
_curr_length = length; |
|
| 594 |
_curr_size = size; |
|
| 595 |
_curr_node = u; |
|
| 596 |
_curr_level = level[u].second; |
|
| 597 |
_curr_found = true; |
|
| 598 |
} |
|
| 599 |
} |
|
| 600 |
level[u] = Pair(i, j); |
|
| 601 |
u = _gr.source(_data[u][j].pred); |
|
| 602 |
} |
|
| 603 |
} |
|
| 604 |
|
|
| 605 |
// If at least one cycle is found, check the optimality condition |
|
| 606 |
LargeValue d; |
|
| 607 |
if (_curr_found && k < n) {
|
|
| 608 |
// Find node potentials |
|
| 609 |
for (int i = 0; i < n; ++i) {
|
|
| 610 |
u = (*_nodes)[i]; |
|
| 611 |
pi[u] = INF; |
|
| 612 |
for (int j = 0; j <= k; ++j) {
|
|
| 613 |
if (_data[u][j].dist < INF) {
|
|
| 614 |
d = _data[u][j].dist * _curr_size - j * _curr_length; |
|
| 615 |
if (_tolerance.less(d, pi[u])) pi[u] = d; |
|
| 616 |
} |
|
| 617 |
} |
|
| 618 |
} |
|
| 619 |
|
|
| 620 |
// Check the optimality condition for all arcs |
|
| 621 |
bool done = true; |
|
| 622 |
for (ArcIt a(_gr); a != INVALID; ++a) {
|
|
| 623 |
if (_tolerance.less(_length[a] * _curr_size - _curr_length, |
|
| 624 |
pi[_gr.target(a)] - pi[_gr.source(a)]) ) {
|
|
| 625 |
done = false; |
|
| 626 |
break; |
|
| 627 |
} |
|
| 628 |
} |
|
| 629 |
return done; |
|
| 630 |
} |
|
| 631 |
return (k == n); |
|
| 632 |
} |
|
| 633 |
|
|
| 634 |
}; //class HartmannOrlin |
|
| 635 |
|
|
| 636 |
///@} |
|
| 637 |
|
|
| 638 |
} //namespace lemon |
|
| 639 |
|
|
| 640 |
#endif //LEMON_HARTMANN_ORLIN_H |
| 1 |
/* -*- C++ -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2008 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_HOWARD_H |
|
| 20 |
#define LEMON_HOWARD_H |
|
| 21 |
|
|
| 22 |
/// \ingroup min_mean_cycle |
|
| 23 |
/// |
|
| 24 |
/// \file |
|
| 25 |
/// \brief Howard's algorithm for finding a minimum mean cycle. |
|
| 26 |
|
|
| 27 |
#include <vector> |
|
| 28 |
#include <limits> |
|
| 29 |
#include <lemon/core.h> |
|
| 30 |
#include <lemon/path.h> |
|
| 31 |
#include <lemon/tolerance.h> |
|
| 32 |
#include <lemon/connectivity.h> |
|
| 33 |
|
|
| 34 |
namespace lemon {
|
|
| 35 |
|
|
| 36 |
/// \brief Default traits class of Howard class. |
|
| 37 |
/// |
|
| 38 |
/// Default traits class of Howard class. |
|
| 39 |
/// \tparam GR The type of the digraph. |
|
| 40 |
/// \tparam LEN The type of the length map. |
|
| 41 |
/// It must conform to the \ref concepts::ReadMap "ReadMap" concept. |
|
| 42 |
#ifdef DOXYGEN |
|
| 43 |
template <typename GR, typename LEN> |
|
| 44 |
#else |
|
| 45 |
template <typename GR, typename LEN, |
|
| 46 |
bool integer = std::numeric_limits<typename LEN::Value>::is_integer> |
|
| 47 |
#endif |
|
| 48 |
struct HowardDefaultTraits |
|
| 49 |
{
|
|
| 50 |
/// The type of the digraph |
|
| 51 |
typedef GR Digraph; |
|
| 52 |
/// The type of the length map |
|
| 53 |
typedef LEN LengthMap; |
|
| 54 |
/// The type of the arc lengths |
|
| 55 |
typedef typename LengthMap::Value Value; |
|
| 56 |
|
|
| 57 |
/// \brief The large value type used for internal computations |
|
| 58 |
/// |
|
| 59 |
/// The large value type used for internal computations. |
|
| 60 |
/// It is \c long \c long if the \c Value type is integer, |
|
| 61 |
/// otherwise it is \c double. |
|
| 62 |
/// \c Value must be convertible to \c LargeValue. |
|
| 63 |
typedef double LargeValue; |
|
| 64 |
|
|
| 65 |
/// The tolerance type used for internal computations |
|
| 66 |
typedef lemon::Tolerance<LargeValue> Tolerance; |
|
| 67 |
|
|
| 68 |
/// \brief The path type of the found cycles |
|
| 69 |
/// |
|
| 70 |
/// The path type of the found cycles. |
|
| 71 |
/// It must conform to the \ref lemon::concepts::Path "Path" concept |
|
| 72 |
/// and it must have an \c addBack() function. |
|
| 73 |
typedef lemon::Path<Digraph> Path; |
|
| 74 |
}; |
|
| 75 |
|
|
| 76 |
// Default traits class for integer value types |
|
| 77 |
template <typename GR, typename LEN> |
|
| 78 |
struct HowardDefaultTraits<GR, LEN, true> |
|
| 79 |
{
|
|
| 80 |
typedef GR Digraph; |
|
| 81 |
typedef LEN LengthMap; |
|
| 82 |
typedef typename LengthMap::Value Value; |
|
| 83 |
#ifdef LEMON_HAVE_LONG_LONG |
|
| 84 |
typedef long long LargeValue; |
|
| 85 |
#else |
|
| 86 |
typedef long LargeValue; |
|
| 87 |
#endif |
|
| 88 |
typedef lemon::Tolerance<LargeValue> Tolerance; |
|
| 89 |
typedef lemon::Path<Digraph> Path; |
|
| 90 |
}; |
|
| 91 |
|
|
| 92 |
|
|
| 93 |
/// \addtogroup min_mean_cycle |
|
| 94 |
/// @{
|
|
| 95 |
|
|
| 96 |
/// \brief Implementation of Howard's algorithm for finding a minimum |
|
| 97 |
/// mean cycle. |
|
| 98 |
/// |
|
| 99 |
/// This class implements Howard's policy iteration algorithm for finding |
|
| 100 |
/// a directed cycle of minimum mean length (cost) in a digraph |
|
| 101 |
/// \ref amo93networkflows, \ref dasdan98minmeancycle. |
|
| 102 |
/// This class provides the most efficient algorithm for the |
|
| 103 |
/// minimum mean cycle problem, though the best known theoretical |
|
| 104 |
/// bound on its running time is exponential. |
|
| 105 |
/// |
|
| 106 |
/// \tparam GR The type of the digraph the algorithm runs on. |
|
| 107 |
/// \tparam LEN The type of the length map. The default |
|
| 108 |
/// map type is \ref concepts::Digraph::ArcMap "GR::ArcMap<int>". |
|
| 109 |
#ifdef DOXYGEN |
|
| 110 |
template <typename GR, typename LEN, typename TR> |
|
| 111 |
#else |
|
| 112 |
template < typename GR, |
|
| 113 |
typename LEN = typename GR::template ArcMap<int>, |
|
| 114 |
typename TR = HowardDefaultTraits<GR, LEN> > |
|
| 115 |
#endif |
|
| 116 |
class Howard |
|
| 117 |
{
|
|
| 118 |
public: |
|
| 119 |
|
|
| 120 |
/// The type of the digraph |
|
| 121 |
typedef typename TR::Digraph Digraph; |
|
| 122 |
/// The type of the length map |
|
| 123 |
typedef typename TR::LengthMap LengthMap; |
|
| 124 |
/// The type of the arc lengths |
|
| 125 |
typedef typename TR::Value Value; |
|
| 126 |
|
|
| 127 |
/// \brief The large value type |
|
| 128 |
/// |
|
| 129 |
/// The large value type used for internal computations. |
|
| 130 |
/// Using the \ref HowardDefaultTraits "default traits class", |
|
| 131 |
/// it is \c long \c long if the \c Value type is integer, |
|
| 132 |
/// otherwise it is \c double. |
|
| 133 |
typedef typename TR::LargeValue LargeValue; |
|
| 134 |
|
|
| 135 |
/// The tolerance type |
|
| 136 |
typedef typename TR::Tolerance Tolerance; |
|
| 137 |
|
|
| 138 |
/// \brief The path type of the found cycles |
|
| 139 |
/// |
|
| 140 |
/// The path type of the found cycles. |
|
| 141 |
/// Using the \ref HowardDefaultTraits "default traits class", |
|
| 142 |
/// it is \ref lemon::Path "Path<Digraph>". |
|
| 143 |
typedef typename TR::Path Path; |
|
| 144 |
|
|
| 145 |
/// The \ref HowardDefaultTraits "traits class" of the algorithm |
|
| 146 |
typedef TR Traits; |
|
| 147 |
|
|
| 148 |
private: |
|
| 149 |
|
|
| 150 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
|
| 151 |
|
|
| 152 |
// The digraph the algorithm runs on |
|
| 153 |
const Digraph &_gr; |
|
| 154 |
// The length of the arcs |
|
| 155 |
const LengthMap &_length; |
|
| 156 |
|
|
| 157 |
// Data for the found cycles |
|
| 158 |
bool _curr_found, _best_found; |
|
| 159 |
LargeValue _curr_length, _best_length; |
|
| 160 |
int _curr_size, _best_size; |
|
| 161 |
Node _curr_node, _best_node; |
|
| 162 |
|
|
| 163 |
Path *_cycle_path; |
|
| 164 |
bool _local_path; |
|
| 165 |
|
|
| 166 |
// Internal data used by the algorithm |
|
| 167 |
typename Digraph::template NodeMap<Arc> _policy; |
|
| 168 |
typename Digraph::template NodeMap<bool> _reached; |
|
| 169 |
typename Digraph::template NodeMap<int> _level; |
|
| 170 |
typename Digraph::template NodeMap<LargeValue> _dist; |
|
| 171 |
|
|
| 172 |
// Data for storing the strongly connected components |
|
| 173 |
int _comp_num; |
|
| 174 |
typename Digraph::template NodeMap<int> _comp; |
|
| 175 |
std::vector<std::vector<Node> > _comp_nodes; |
|
| 176 |
std::vector<Node>* _nodes; |
|
| 177 |
typename Digraph::template NodeMap<std::vector<Arc> > _in_arcs; |
|
| 178 |
|
|
| 179 |
// Queue used for BFS search |
|
| 180 |
std::vector<Node> _queue; |
|
| 181 |
int _qfront, _qback; |
|
| 182 |
|
|
| 183 |
Tolerance _tolerance; |
|
| 184 |
|
|
| 185 |
// Infinite constant |
|
| 186 |
const LargeValue INF; |
|
| 187 |
|
|
| 188 |
public: |
|
| 189 |
|
|
| 190 |
/// \name Named Template Parameters |
|
| 191 |
/// @{
|
|
| 192 |
|
|
| 193 |
template <typename T> |
|
| 194 |
struct SetLargeValueTraits : public Traits {
|
|
| 195 |
typedef T LargeValue; |
|
| 196 |
typedef lemon::Tolerance<T> Tolerance; |
|
| 197 |
}; |
|
| 198 |
|
|
| 199 |
/// \brief \ref named-templ-param "Named parameter" for setting |
|
| 200 |
/// \c LargeValue type. |
|
| 201 |
/// |
|
| 202 |
/// \ref named-templ-param "Named parameter" for setting \c LargeValue |
|
| 203 |
/// type. It is used for internal computations in the algorithm. |
|
| 204 |
template <typename T> |
|
| 205 |
struct SetLargeValue |
|
| 206 |
: public Howard<GR, LEN, SetLargeValueTraits<T> > {
|
|
| 207 |
typedef Howard<GR, LEN, SetLargeValueTraits<T> > Create; |
|
| 208 |
}; |
|
| 209 |
|
|
| 210 |
template <typename T> |
|
| 211 |
struct SetPathTraits : public Traits {
|
|
| 212 |
typedef T Path; |
|
| 213 |
}; |
|
| 214 |
|
|
| 215 |
/// \brief \ref named-templ-param "Named parameter" for setting |
|
| 216 |
/// \c %Path type. |
|
| 217 |
/// |
|
| 218 |
/// \ref named-templ-param "Named parameter" for setting the \c %Path |
|
| 219 |
/// type of the found cycles. |
|
| 220 |
/// It must conform to the \ref lemon::concepts::Path "Path" concept |
|
| 221 |
/// and it must have an \c addBack() function. |
|
| 222 |
template <typename T> |
|
| 223 |
struct SetPath |
|
| 224 |
: public Howard<GR, LEN, SetPathTraits<T> > {
|
|
| 225 |
typedef Howard<GR, LEN, SetPathTraits<T> > Create; |
|
| 226 |
}; |
|
| 227 |
|
|
| 228 |
/// @} |
|
| 229 |
|
|
| 230 |
public: |
|
| 231 |
|
|
| 232 |
/// \brief Constructor. |
|
| 233 |
/// |
|
| 234 |
/// The constructor of the class. |
|
| 235 |
/// |
|
| 236 |
/// \param digraph The digraph the algorithm runs on. |
|
| 237 |
/// \param length The lengths (costs) of the arcs. |
|
| 238 |
Howard( const Digraph &digraph, |
|
| 239 |
const LengthMap &length ) : |
|
| 240 |
_gr(digraph), _length(length), _best_found(false), |
|
| 241 |
_best_length(0), _best_size(1), _cycle_path(NULL), _local_path(false), |
|
| 242 |
_policy(digraph), _reached(digraph), _level(digraph), _dist(digraph), |
|
| 243 |
_comp(digraph), _in_arcs(digraph), |
|
| 244 |
INF(std::numeric_limits<LargeValue>::has_infinity ? |
|
| 245 |
std::numeric_limits<LargeValue>::infinity() : |
|
| 246 |
std::numeric_limits<LargeValue>::max()) |
|
| 247 |
{}
|
|
| 248 |
|
|
| 249 |
/// Destructor. |
|
| 250 |
~Howard() {
|
|
| 251 |
if (_local_path) delete _cycle_path; |
|
| 252 |
} |
|
| 253 |
|
|
| 254 |
/// \brief Set the path structure for storing the found cycle. |
|
| 255 |
/// |
|
| 256 |
/// This function sets an external path structure for storing the |
|
| 257 |
/// found cycle. |
|
| 258 |
/// |
|
| 259 |
/// If you don't call this function before calling \ref run() or |
|
| 260 |
/// \ref findMinMean(), it will allocate a local \ref Path "path" |
|
| 261 |
/// structure. The destuctor deallocates this automatically |
|
| 262 |
/// allocated object, of course. |
|
| 263 |
/// |
|
| 264 |
/// \note The algorithm calls only the \ref lemon::Path::addBack() |
|
| 265 |
/// "addBack()" function of the given path structure. |
|
| 266 |
/// |
|
| 267 |
/// \return <tt>(*this)</tt> |
|
| 268 |
Howard& cycle(Path &path) {
|
|
| 269 |
if (_local_path) {
|
|
| 270 |
delete _cycle_path; |
|
| 271 |
_local_path = false; |
|
| 272 |
} |
|
| 273 |
_cycle_path = &path; |
|
| 274 |
return *this; |
|
| 275 |
} |
|
| 276 |
|
|
| 277 |
/// \brief Set the tolerance used by the algorithm. |
|
| 278 |
/// |
|
| 279 |
/// This function sets the tolerance object used by the algorithm. |
|
| 280 |
/// |
|
| 281 |
/// \return <tt>(*this)</tt> |
|
| 282 |
Howard& tolerance(const Tolerance& tolerance) {
|
|
| 283 |
_tolerance = tolerance; |
|
| 284 |
return *this; |
|
| 285 |
} |
|
| 286 |
|
|
| 287 |
/// \brief Return a const reference to the tolerance. |
|
| 288 |
/// |
|
| 289 |
/// This function returns a const reference to the tolerance object |
|
| 290 |
/// used by the algorithm. |
|
| 291 |
const Tolerance& tolerance() const {
|
|
| 292 |
return _tolerance; |
|
| 293 |
} |
|
| 294 |
|
|
| 295 |
/// \name Execution control |
|
| 296 |
/// The simplest way to execute the algorithm is to call the \ref run() |
|
| 297 |
/// function.\n |
|
| 298 |
/// If you only need the minimum mean length, you may call |
|
| 299 |
/// \ref findMinMean(). |
|
| 300 |
|
|
| 301 |
/// @{
|
|
| 302 |
|
|
| 303 |
/// \brief Run the algorithm. |
|
| 304 |
/// |
|
| 305 |
/// This function runs the algorithm. |
|
| 306 |
/// It can be called more than once (e.g. if the underlying digraph |
|
| 307 |
/// and/or the arc lengths have been modified). |
|
| 308 |
/// |
|
| 309 |
/// \return \c true if a directed cycle exists in the digraph. |
|
| 310 |
/// |
|
| 311 |
/// \note <tt>mmc.run()</tt> is just a shortcut of the following code. |
|
| 312 |
/// \code |
|
| 313 |
/// return mmc.findMinMean() && mmc.findCycle(); |
|
| 314 |
/// \endcode |
|
| 315 |
bool run() {
|
|
| 316 |
return findMinMean() && findCycle(); |
|
| 317 |
} |
|
| 318 |
|
|
| 319 |
/// \brief Find the minimum cycle mean. |
|
| 320 |
/// |
|
| 321 |
/// This function finds the minimum mean length of the directed |
|
| 322 |
/// cycles in the digraph. |
|
| 323 |
/// |
|
| 324 |
/// \return \c true if a directed cycle exists in the digraph. |
|
| 325 |
bool findMinMean() {
|
|
| 326 |
// Initialize and find strongly connected components |
|
| 327 |
init(); |
|
| 328 |
findComponents(); |
|
| 329 |
|
|
| 330 |
// Find the minimum cycle mean in the components |
|
| 331 |
for (int comp = 0; comp < _comp_num; ++comp) {
|
|
| 332 |
// Find the minimum mean cycle in the current component |
|
| 333 |
if (!buildPolicyGraph(comp)) continue; |
|
| 334 |
while (true) {
|
|
| 335 |
findPolicyCycle(); |
|
| 336 |
if (!computeNodeDistances()) break; |
|
| 337 |
} |
|
| 338 |
// Update the best cycle (global minimum mean cycle) |
|
| 339 |
if ( _curr_found && (!_best_found || |
|
| 340 |
_curr_length * _best_size < _best_length * _curr_size) ) {
|
|
| 341 |
_best_found = true; |
|
| 342 |
_best_length = _curr_length; |
|
| 343 |
_best_size = _curr_size; |
|
| 344 |
_best_node = _curr_node; |
|
| 345 |
} |
|
| 346 |
} |
|
| 347 |
return _best_found; |
|
| 348 |
} |
|
| 349 |
|
|
| 350 |
/// \brief Find a minimum mean directed cycle. |
|
| 351 |
/// |
|
| 352 |
/// This function finds a directed cycle of minimum mean length |
|
| 353 |
/// in the digraph using the data computed by findMinMean(). |
|
| 354 |
/// |
|
| 355 |
/// \return \c true if a directed cycle exists in the digraph. |
|
| 356 |
/// |
|
| 357 |
/// \pre \ref findMinMean() must be called before using this function. |
|
| 358 |
bool findCycle() {
|
|
| 359 |
if (!_best_found) return false; |
|
| 360 |
_cycle_path->addBack(_policy[_best_node]); |
|
| 361 |
for ( Node v = _best_node; |
|
| 362 |
(v = _gr.target(_policy[v])) != _best_node; ) {
|
|
| 363 |
_cycle_path->addBack(_policy[v]); |
|
| 364 |
} |
|
| 365 |
return true; |
|
| 366 |
} |
|
| 367 |
|
|
| 368 |
/// @} |
|
| 369 |
|
|
| 370 |
/// \name Query Functions |
|
| 371 |
/// The results of the algorithm can be obtained using these |
|
| 372 |
/// functions.\n |
|
| 373 |
/// The algorithm should be executed before using them. |
|
| 374 |
|
|
| 375 |
/// @{
|
|
| 376 |
|
|
| 377 |
/// \brief Return the total length of the found cycle. |
|
| 378 |
/// |
|
| 379 |
/// This function returns the total length of the found cycle. |
|
| 380 |
/// |
|
| 381 |
/// \pre \ref run() or \ref findMinMean() must be called before |
|
| 382 |
/// using this function. |
|
| 383 |
LargeValue cycleLength() const {
|
|
| 384 |
return _best_length; |
|
| 385 |
} |
|
| 386 |
|
|
| 387 |
/// \brief Return the number of arcs on the found cycle. |
|
| 388 |
/// |
|
| 389 |
/// This function returns the number of arcs on the found cycle. |
|
| 390 |
/// |
|
| 391 |
/// \pre \ref run() or \ref findMinMean() must be called before |
|
| 392 |
/// using this function. |
|
| 393 |
int cycleArcNum() const {
|
|
| 394 |
return _best_size; |
|
| 395 |
} |
|
| 396 |
|
|
| 397 |
/// \brief Return the mean length of the found cycle. |
|
| 398 |
/// |
|
| 399 |
/// This function returns the mean length of the found cycle. |
|
| 400 |
/// |
|
| 401 |
/// \note <tt>alg.cycleMean()</tt> is just a shortcut of the |
|
| 402 |
/// following code. |
|
| 403 |
/// \code |
|
| 404 |
/// return static_cast<double>(alg.cycleLength()) / alg.cycleArcNum(); |
|
| 405 |
/// \endcode |
|
| 406 |
/// |
|
| 407 |
/// \pre \ref run() or \ref findMinMean() must be called before |
|
| 408 |
/// using this function. |
|
| 409 |
double cycleMean() const {
|
|
| 410 |
return static_cast<double>(_best_length) / _best_size; |
|
| 411 |
} |
|
| 412 |
|
|
| 413 |
/// \brief Return the found cycle. |
|
| 414 |
/// |
|
| 415 |
/// This function returns a const reference to the path structure |
|
| 416 |
/// storing the found cycle. |
|
| 417 |
/// |
|
| 418 |
/// \pre \ref run() or \ref findCycle() must be called before using |
|
| 419 |
/// this function. |
|
| 420 |
const Path& cycle() const {
|
|
| 421 |
return *_cycle_path; |
|
| 422 |
} |
|
| 423 |
|
|
| 424 |
///@} |
|
| 425 |
|
|
| 426 |
private: |
|
| 427 |
|
|
| 428 |
// Initialize |
|
| 429 |
void init() {
|
|
| 430 |
if (!_cycle_path) {
|
|
| 431 |
_local_path = true; |
|
| 432 |
_cycle_path = new Path; |
|
| 433 |
} |
|
| 434 |
_queue.resize(countNodes(_gr)); |
|
| 435 |
_best_found = false; |
|
| 436 |
_best_length = 0; |
|
| 437 |
_best_size = 1; |
|
| 438 |
_cycle_path->clear(); |
|
| 439 |
} |
|
| 440 |
|
|
| 441 |
// Find strongly connected components and initialize _comp_nodes |
|
| 442 |
// and _in_arcs |
|
| 443 |
void findComponents() {
|
|
| 444 |
_comp_num = stronglyConnectedComponents(_gr, _comp); |
|
| 445 |
_comp_nodes.resize(_comp_num); |
|
| 446 |
if (_comp_num == 1) {
|
|
| 447 |
_comp_nodes[0].clear(); |
|
| 448 |
for (NodeIt n(_gr); n != INVALID; ++n) {
|
|
| 449 |
_comp_nodes[0].push_back(n); |
|
| 450 |
_in_arcs[n].clear(); |
|
| 451 |
for (InArcIt a(_gr, n); a != INVALID; ++a) {
|
|
| 452 |
_in_arcs[n].push_back(a); |
|
| 453 |
} |
|
| 454 |
} |
|
| 455 |
} else {
|
|
| 456 |
for (int i = 0; i < _comp_num; ++i) |
|
| 457 |
_comp_nodes[i].clear(); |
|
| 458 |
for (NodeIt n(_gr); n != INVALID; ++n) {
|
|
| 459 |
int k = _comp[n]; |
|
| 460 |
_comp_nodes[k].push_back(n); |
|
| 461 |
_in_arcs[n].clear(); |
|
| 462 |
for (InArcIt a(_gr, n); a != INVALID; ++a) {
|
|
| 463 |
if (_comp[_gr.source(a)] == k) _in_arcs[n].push_back(a); |
|
| 464 |
} |
|
| 465 |
} |
|
| 466 |
} |
|
| 467 |
} |
|
| 468 |
|
|
| 469 |
// Build the policy graph in the given strongly connected component |
|
| 470 |
// (the out-degree of every node is 1) |
|
| 471 |
bool buildPolicyGraph(int comp) {
|
|
| 472 |
_nodes = &(_comp_nodes[comp]); |
|
| 473 |
if (_nodes->size() < 1 || |
|
| 474 |
(_nodes->size() == 1 && _in_arcs[(*_nodes)[0]].size() == 0)) {
|
|
| 475 |
return false; |
|
| 476 |
} |
|
| 477 |
for (int i = 0; i < int(_nodes->size()); ++i) {
|
|
| 478 |
_dist[(*_nodes)[i]] = INF; |
|
| 479 |
} |
|
| 480 |
Node u, v; |
|
| 481 |
Arc e; |
|
| 482 |
for (int i = 0; i < int(_nodes->size()); ++i) {
|
|
| 483 |
v = (*_nodes)[i]; |
|
| 484 |
for (int j = 0; j < int(_in_arcs[v].size()); ++j) {
|
|
| 485 |
e = _in_arcs[v][j]; |
|
| 486 |
u = _gr.source(e); |
|
| 487 |
if (_length[e] < _dist[u]) {
|
|
| 488 |
_dist[u] = _length[e]; |
|
| 489 |
_policy[u] = e; |
|
| 490 |
} |
|
| 491 |
} |
|
| 492 |
} |
|
| 493 |
return true; |
|
| 494 |
} |
|
| 495 |
|
|
| 496 |
// Find the minimum mean cycle in the policy graph |
|
| 497 |
void findPolicyCycle() {
|
|
| 498 |
for (int i = 0; i < int(_nodes->size()); ++i) {
|
|
| 499 |
_level[(*_nodes)[i]] = -1; |
|
| 500 |
} |
|
| 501 |
LargeValue clength; |
|
| 502 |
int csize; |
|
| 503 |
Node u, v; |
|
| 504 |
_curr_found = false; |
|
| 505 |
for (int i = 0; i < int(_nodes->size()); ++i) {
|
|
| 506 |
u = (*_nodes)[i]; |
|
| 507 |
if (_level[u] >= 0) continue; |
|
| 508 |
for (; _level[u] < 0; u = _gr.target(_policy[u])) {
|
|
| 509 |
_level[u] = i; |
|
| 510 |
} |
|
| 511 |
if (_level[u] == i) {
|
|
| 512 |
// A cycle is found |
|
| 513 |
clength = _length[_policy[u]]; |
|
| 514 |
csize = 1; |
|
| 515 |
for (v = u; (v = _gr.target(_policy[v])) != u; ) {
|
|
| 516 |
clength += _length[_policy[v]]; |
|
| 517 |
++csize; |
|
| 518 |
} |
|
| 519 |
if ( !_curr_found || |
|
| 520 |
(clength * _curr_size < _curr_length * csize) ) {
|
|
| 521 |
_curr_found = true; |
|
| 522 |
_curr_length = clength; |
|
| 523 |
_curr_size = csize; |
|
| 524 |
_curr_node = u; |
|
| 525 |
} |
|
| 526 |
} |
|
| 527 |
} |
|
| 528 |
} |
|
| 529 |
|
|
| 530 |
// Contract the policy graph and compute node distances |
|
| 531 |
bool computeNodeDistances() {
|
|
| 532 |
// Find the component of the main cycle and compute node distances |
|
| 533 |
// using reverse BFS |
|
| 534 |
for (int i = 0; i < int(_nodes->size()); ++i) {
|
|
| 535 |
_reached[(*_nodes)[i]] = false; |
|
| 536 |
} |
|
| 537 |
_qfront = _qback = 0; |
|
| 538 |
_queue[0] = _curr_node; |
|
| 539 |
_reached[_curr_node] = true; |
|
| 540 |
_dist[_curr_node] = 0; |
|
| 541 |
Node u, v; |
|
| 542 |
Arc e; |
|
| 543 |
while (_qfront <= _qback) {
|
|
| 544 |
v = _queue[_qfront++]; |
|
| 545 |
for (int j = 0; j < int(_in_arcs[v].size()); ++j) {
|
|
| 546 |
e = _in_arcs[v][j]; |
|
| 547 |
u = _gr.source(e); |
|
| 548 |
if (_policy[u] == e && !_reached[u]) {
|
|
| 549 |
_reached[u] = true; |
|
| 550 |
_dist[u] = _dist[v] + _length[e] * _curr_size - _curr_length; |
|
| 551 |
_queue[++_qback] = u; |
|
| 552 |
} |
|
| 553 |
} |
|
| 554 |
} |
|
| 555 |
|
|
| 556 |
// Connect all other nodes to this component and compute node |
|
| 557 |
// distances using reverse BFS |
|
| 558 |
_qfront = 0; |
|
| 559 |
while (_qback < int(_nodes->size())-1) {
|
|
| 560 |
v = _queue[_qfront++]; |
|
| 561 |
for (int j = 0; j < int(_in_arcs[v].size()); ++j) {
|
|
| 562 |
e = _in_arcs[v][j]; |
|
| 563 |
u = _gr.source(e); |
|
| 564 |
if (!_reached[u]) {
|
|
| 565 |
_reached[u] = true; |
|
| 566 |
_policy[u] = e; |
|
| 567 |
_dist[u] = _dist[v] + _length[e] * _curr_size - _curr_length; |
|
| 568 |
_queue[++_qback] = u; |
|
| 569 |
} |
|
| 570 |
} |
|
| 571 |
} |
|
| 572 |
|
|
| 573 |
// Improve node distances |
|
| 574 |
bool improved = false; |
|
| 575 |
for (int i = 0; i < int(_nodes->size()); ++i) {
|
|
| 576 |
v = (*_nodes)[i]; |
|
| 577 |
for (int j = 0; j < int(_in_arcs[v].size()); ++j) {
|
|
| 578 |
e = _in_arcs[v][j]; |
|
| 579 |
u = _gr.source(e); |
|
| 580 |
LargeValue delta = _dist[v] + _length[e] * _curr_size - _curr_length; |
|
| 581 |
if (_tolerance.less(delta, _dist[u])) {
|
|
| 582 |
_dist[u] = delta; |
|
| 583 |
_policy[u] = e; |
|
| 584 |
improved = true; |
|
| 585 |
} |
|
| 586 |
} |
|
| 587 |
} |
|
| 588 |
return improved; |
|
| 589 |
} |
|
| 590 |
|
|
| 591 |
}; //class Howard |
|
| 592 |
|
|
| 593 |
///@} |
|
| 594 |
|
|
| 595 |
} //namespace lemon |
|
| 596 |
|
|
| 597 |
#endif //LEMON_HOWARD_H |
| 1 |
/* -*- C++ -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2008 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_KARP_H |
|
| 20 |
#define LEMON_KARP_H |
|
| 21 |
|
|
| 22 |
/// \ingroup min_mean_cycle |
|
| 23 |
/// |
|
| 24 |
/// \file |
|
| 25 |
/// \brief Karp's algorithm for finding a minimum mean cycle. |
|
| 26 |
|
|
| 27 |
#include <vector> |
|
| 28 |
#include <limits> |
|
| 29 |
#include <lemon/core.h> |
|
| 30 |
#include <lemon/path.h> |
|
| 31 |
#include <lemon/tolerance.h> |
|
| 32 |
#include <lemon/connectivity.h> |
|
| 33 |
|
|
| 34 |
namespace lemon {
|
|
| 35 |
|
|
| 36 |
/// \brief Default traits class of Karp algorithm. |
|
| 37 |
/// |
|
| 38 |
/// Default traits class of Karp algorithm. |
|
| 39 |
/// \tparam GR The type of the digraph. |
|
| 40 |
/// \tparam LEN The type of the length map. |
|
| 41 |
/// It must conform to the \ref concepts::ReadMap "ReadMap" concept. |
|
| 42 |
#ifdef DOXYGEN |
|
| 43 |
template <typename GR, typename LEN> |
|
| 44 |
#else |
|
| 45 |
template <typename GR, typename LEN, |
|
| 46 |
bool integer = std::numeric_limits<typename LEN::Value>::is_integer> |
|
| 47 |
#endif |
|
| 48 |
struct KarpDefaultTraits |
|
| 49 |
{
|
|
| 50 |
/// The type of the digraph |
|
| 51 |
typedef GR Digraph; |
|
| 52 |
/// The type of the length map |
|
| 53 |
typedef LEN LengthMap; |
|
| 54 |
/// The type of the arc lengths |
|
| 55 |
typedef typename LengthMap::Value Value; |
|
| 56 |
|
|
| 57 |
/// \brief The large value type used for internal computations |
|
| 58 |
/// |
|
| 59 |
/// The large value type used for internal computations. |
|
| 60 |
/// It is \c long \c long if the \c Value type is integer, |
|
| 61 |
/// otherwise it is \c double. |
|
| 62 |
/// \c Value must be convertible to \c LargeValue. |
|
| 63 |
typedef double LargeValue; |
|
| 64 |
|
|
| 65 |
/// The tolerance type used for internal computations |
|
| 66 |
typedef lemon::Tolerance<LargeValue> Tolerance; |
|
| 67 |
|
|
| 68 |
/// \brief The path type of the found cycles |
|
| 69 |
/// |
|
| 70 |
/// The path type of the found cycles. |
|
| 71 |
/// It must conform to the \ref lemon::concepts::Path "Path" concept |
|
| 72 |
/// and it must have an \c addFront() function. |
|
| 73 |
typedef lemon::Path<Digraph> Path; |
|
| 74 |
}; |
|
| 75 |
|
|
| 76 |
// Default traits class for integer value types |
|
| 77 |
template <typename GR, typename LEN> |
|
| 78 |
struct KarpDefaultTraits<GR, LEN, true> |
|
| 79 |
{
|
|
| 80 |
typedef GR Digraph; |
|
| 81 |
typedef LEN LengthMap; |
|
| 82 |
typedef typename LengthMap::Value Value; |
|
| 83 |
#ifdef LEMON_HAVE_LONG_LONG |
|
| 84 |
typedef long long LargeValue; |
|
| 85 |
#else |
|
| 86 |
typedef long LargeValue; |
|
| 87 |
#endif |
|
| 88 |
typedef lemon::Tolerance<LargeValue> Tolerance; |
|
| 89 |
typedef lemon::Path<Digraph> Path; |
|
| 90 |
}; |
|
| 91 |
|
|
| 92 |
|
|
| 93 |
/// \addtogroup min_mean_cycle |
|
| 94 |
/// @{
|
|
| 95 |
|
|
| 96 |
/// \brief Implementation of Karp's algorithm for finding a minimum |
|
| 97 |
/// mean cycle. |
|
| 98 |
/// |
|
| 99 |
/// This class implements Karp's algorithm for finding a directed |
|
| 100 |
/// cycle of minimum mean length (cost) in a digraph |
|
| 101 |
/// \ref amo93networkflows, \ref dasdan98minmeancycle. |
|
| 102 |
/// It runs in time O(ne) and uses space O(n<sup>2</sup>+e). |
|
| 103 |
/// |
|
| 104 |
/// \tparam GR The type of the digraph the algorithm runs on. |
|
| 105 |
/// \tparam LEN The type of the length map. The default |
|
| 106 |
/// map type is \ref concepts::Digraph::ArcMap "GR::ArcMap<int>". |
|
| 107 |
#ifdef DOXYGEN |
|
| 108 |
template <typename GR, typename LEN, typename TR> |
|
| 109 |
#else |
|
| 110 |
template < typename GR, |
|
| 111 |
typename LEN = typename GR::template ArcMap<int>, |
|
| 112 |
typename TR = KarpDefaultTraits<GR, LEN> > |
|
| 113 |
#endif |
|
| 114 |
class Karp |
|
| 115 |
{
|
|
| 116 |
public: |
|
| 117 |
|
|
| 118 |
/// The type of the digraph |
|
| 119 |
typedef typename TR::Digraph Digraph; |
|
| 120 |
/// The type of the length map |
|
| 121 |
typedef typename TR::LengthMap LengthMap; |
|
| 122 |
/// The type of the arc lengths |
|
| 123 |
typedef typename TR::Value Value; |
|
| 124 |
|
|
| 125 |
/// \brief The large value type |
|
| 126 |
/// |
|
| 127 |
/// The large value type used for internal computations. |
|
| 128 |
/// Using the \ref KarpDefaultTraits "default traits class", |
|
| 129 |
/// it is \c long \c long if the \c Value type is integer, |
|
| 130 |
/// otherwise it is \c double. |
|
| 131 |
typedef typename TR::LargeValue LargeValue; |
|
| 132 |
|
|
| 133 |
/// The tolerance type |
|
| 134 |
typedef typename TR::Tolerance Tolerance; |
|
| 135 |
|
|
| 136 |
/// \brief The path type of the found cycles |
|
| 137 |
/// |
|
| 138 |
/// The path type of the found cycles. |
|
| 139 |
/// Using the \ref KarpDefaultTraits "default traits class", |
|
| 140 |
/// it is \ref lemon::Path "Path<Digraph>". |
|
| 141 |
typedef typename TR::Path Path; |
|
| 142 |
|
|
| 143 |
/// The \ref KarpDefaultTraits "traits class" of the algorithm |
|
| 144 |
typedef TR Traits; |
|
| 145 |
|
|
| 146 |
private: |
|
| 147 |
|
|
| 148 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
|
| 149 |
|
|
| 150 |
// Data sturcture for path data |
|
| 151 |
struct PathData |
|
| 152 |
{
|
|
| 153 |
LargeValue dist; |
|
| 154 |
Arc pred; |
|
| 155 |
PathData(LargeValue d, Arc p = INVALID) : |
|
| 156 |
dist(d), pred(p) {}
|
|
| 157 |
}; |
|
| 158 |
|
|
| 159 |
typedef typename Digraph::template NodeMap<std::vector<PathData> > |
|
| 160 |
PathDataNodeMap; |
|
| 161 |
|
|
| 162 |
private: |
|
| 163 |
|
|
| 164 |
// The digraph the algorithm runs on |
|
| 165 |
const Digraph &_gr; |
|
| 166 |
// The length of the arcs |
|
| 167 |
const LengthMap &_length; |
|
| 168 |
|
|
| 169 |
// Data for storing the strongly connected components |
|
| 170 |
int _comp_num; |
|
| 171 |
typename Digraph::template NodeMap<int> _comp; |
|
| 172 |
std::vector<std::vector<Node> > _comp_nodes; |
|
| 173 |
std::vector<Node>* _nodes; |
|
| 174 |
typename Digraph::template NodeMap<std::vector<Arc> > _out_arcs; |
|
| 175 |
|
|
| 176 |
// Data for the found cycle |
|
| 177 |
LargeValue _cycle_length; |
|
| 178 |
int _cycle_size; |
|
| 179 |
Node _cycle_node; |
|
| 180 |
|
|
| 181 |
Path *_cycle_path; |
|
| 182 |
bool _local_path; |
|
| 183 |
|
|
| 184 |
// Node map for storing path data |
|
| 185 |
PathDataNodeMap _data; |
|
| 186 |
// The processed nodes in the last round |
|
| 187 |
std::vector<Node> _process; |
|
| 188 |
|
|
| 189 |
Tolerance _tolerance; |
|
| 190 |
|
|
| 191 |
// Infinite constant |
|
| 192 |
const LargeValue INF; |
|
| 193 |
|
|
| 194 |
public: |
|
| 195 |
|
|
| 196 |
/// \name Named Template Parameters |
|
| 197 |
/// @{
|
|
| 198 |
|
|
| 199 |
template <typename T> |
|
| 200 |
struct SetLargeValueTraits : public Traits {
|
|
| 201 |
typedef T LargeValue; |
|
| 202 |
typedef lemon::Tolerance<T> Tolerance; |
|
| 203 |
}; |
|
| 204 |
|
|
| 205 |
/// \brief \ref named-templ-param "Named parameter" for setting |
|
| 206 |
/// \c LargeValue type. |
|
| 207 |
/// |
|
| 208 |
/// \ref named-templ-param "Named parameter" for setting \c LargeValue |
|
| 209 |
/// type. It is used for internal computations in the algorithm. |
|
| 210 |
template <typename T> |
|
| 211 |
struct SetLargeValue |
|
| 212 |
: public Karp<GR, LEN, SetLargeValueTraits<T> > {
|
|
| 213 |
typedef Karp<GR, LEN, SetLargeValueTraits<T> > Create; |
|
| 214 |
}; |
|
| 215 |
|
|
| 216 |
template <typename T> |
|
| 217 |
struct SetPathTraits : public Traits {
|
|
| 218 |
typedef T Path; |
|
| 219 |
}; |
|
| 220 |
|
|
| 221 |
/// \brief \ref named-templ-param "Named parameter" for setting |
|
| 222 |
/// \c %Path type. |
|
| 223 |
/// |
|
| 224 |
/// \ref named-templ-param "Named parameter" for setting the \c %Path |
|
| 225 |
/// type of the found cycles. |
|
| 226 |
/// It must conform to the \ref lemon::concepts::Path "Path" concept |
|
| 227 |
/// and it must have an \c addFront() function. |
|
| 228 |
template <typename T> |
|
| 229 |
struct SetPath |
|
| 230 |
: public Karp<GR, LEN, SetPathTraits<T> > {
|
|
| 231 |
typedef Karp<GR, LEN, SetPathTraits<T> > Create; |
|
| 232 |
}; |
|
| 233 |
|
|
| 234 |
/// @} |
|
| 235 |
|
|
| 236 |
public: |
|
| 237 |
|
|
| 238 |
/// \brief Constructor. |
|
| 239 |
/// |
|
| 240 |
/// The constructor of the class. |
|
| 241 |
/// |
|
| 242 |
/// \param digraph The digraph the algorithm runs on. |
|
| 243 |
/// \param length The lengths (costs) of the arcs. |
|
| 244 |
Karp( const Digraph &digraph, |
|
| 245 |
const LengthMap &length ) : |
|
| 246 |
_gr(digraph), _length(length), _comp(digraph), _out_arcs(digraph), |
|
| 247 |
_cycle_length(0), _cycle_size(1), _cycle_node(INVALID), |
|
| 248 |
_cycle_path(NULL), _local_path(false), _data(digraph), |
|
| 249 |
INF(std::numeric_limits<LargeValue>::has_infinity ? |
|
| 250 |
std::numeric_limits<LargeValue>::infinity() : |
|
| 251 |
std::numeric_limits<LargeValue>::max()) |
|
| 252 |
{}
|
|
| 253 |
|
|
| 254 |
/// Destructor. |
|
| 255 |
~Karp() {
|
|
| 256 |
if (_local_path) delete _cycle_path; |
|
| 257 |
} |
|
| 258 |
|
|
| 259 |
/// \brief Set the path structure for storing the found cycle. |
|
| 260 |
/// |
|
| 261 |
/// This function sets an external path structure for storing the |
|
| 262 |
/// found cycle. |
|
| 263 |
/// |
|
| 264 |
/// If you don't call this function before calling \ref run() or |
|
| 265 |
/// \ref findMinMean(), it will allocate a local \ref Path "path" |
|
| 266 |
/// structure. The destuctor deallocates this automatically |
|
| 267 |
/// allocated object, of course. |
|
| 268 |
/// |
|
| 269 |
/// \note The algorithm calls only the \ref lemon::Path::addFront() |
|
| 270 |
/// "addFront()" function of the given path structure. |
|
| 271 |
/// |
|
| 272 |
/// \return <tt>(*this)</tt> |
|
| 273 |
Karp& cycle(Path &path) {
|
|
| 274 |
if (_local_path) {
|
|
| 275 |
delete _cycle_path; |
|
| 276 |
_local_path = false; |
|
| 277 |
} |
|
| 278 |
_cycle_path = &path; |
|
| 279 |
return *this; |
|
| 280 |
} |
|
| 281 |
|
|
| 282 |
/// \brief Set the tolerance used by the algorithm. |
|
| 283 |
/// |
|
| 284 |
/// This function sets the tolerance object used by the algorithm. |
|
| 285 |
/// |
|
| 286 |
/// \return <tt>(*this)</tt> |
|
| 287 |
Karp& tolerance(const Tolerance& tolerance) {
|
|
| 288 |
_tolerance = tolerance; |
|
| 289 |
return *this; |
|
| 290 |
} |
|
| 291 |
|
|
| 292 |
/// \brief Return a const reference to the tolerance. |
|
| 293 |
/// |
|
| 294 |
/// This function returns a const reference to the tolerance object |
|
| 295 |
/// used by the algorithm. |
|
| 296 |
const Tolerance& tolerance() const {
|
|
| 297 |
return _tolerance; |
|
| 298 |
} |
|
| 299 |
|
|
| 300 |
/// \name Execution control |
|
| 301 |
/// The simplest way to execute the algorithm is to call the \ref run() |
|
| 302 |
/// function.\n |
|
| 303 |
/// If you only need the minimum mean length, you may call |
|
| 304 |
/// \ref findMinMean(). |
|
| 305 |
|
|
| 306 |
/// @{
|
|
| 307 |
|
|
| 308 |
/// \brief Run the algorithm. |
|
| 309 |
/// |
|
| 310 |
/// This function runs the algorithm. |
|
| 311 |
/// It can be called more than once (e.g. if the underlying digraph |
|
| 312 |
/// and/or the arc lengths have been modified). |
|
| 313 |
/// |
|
| 314 |
/// \return \c true if a directed cycle exists in the digraph. |
|
| 315 |
/// |
|
| 316 |
/// \note <tt>mmc.run()</tt> is just a shortcut of the following code. |
|
| 317 |
/// \code |
|
| 318 |
/// return mmc.findMinMean() && mmc.findCycle(); |
|
| 319 |
/// \endcode |
|
| 320 |
bool run() {
|
|
| 321 |
return findMinMean() && findCycle(); |
|
| 322 |
} |
|
| 323 |
|
|
| 324 |
/// \brief Find the minimum cycle mean. |
|
| 325 |
/// |
|
| 326 |
/// This function finds the minimum mean length of the directed |
|
| 327 |
/// cycles in the digraph. |
|
| 328 |
/// |
|
| 329 |
/// \return \c true if a directed cycle exists in the digraph. |
|
| 330 |
bool findMinMean() {
|
|
| 331 |
// Initialization and find strongly connected components |
|
| 332 |
init(); |
|
| 333 |
findComponents(); |
|
| 334 |
|
|
| 335 |
// Find the minimum cycle mean in the components |
|
| 336 |
for (int comp = 0; comp < _comp_num; ++comp) {
|
|
| 337 |
if (!initComponent(comp)) continue; |
|
| 338 |
processRounds(); |
|
| 339 |
updateMinMean(); |
|
| 340 |
} |
|
| 341 |
return (_cycle_node != INVALID); |
|
| 342 |
} |
|
| 343 |
|
|
| 344 |
/// \brief Find a minimum mean directed cycle. |
|
| 345 |
/// |
|
| 346 |
/// This function finds a directed cycle of minimum mean length |
|
| 347 |
/// in the digraph using the data computed by findMinMean(). |
|
| 348 |
/// |
|
| 349 |
/// \return \c true if a directed cycle exists in the digraph. |
|
| 350 |
/// |
|
| 351 |
/// \pre \ref findMinMean() must be called before using this function. |
|
| 352 |
bool findCycle() {
|
|
| 353 |
if (_cycle_node == INVALID) return false; |
|
| 354 |
IntNodeMap reached(_gr, -1); |
|
| 355 |
int r = _data[_cycle_node].size(); |
|
| 356 |
Node u = _cycle_node; |
|
| 357 |
while (reached[u] < 0) {
|
|
| 358 |
reached[u] = --r; |
|
| 359 |
u = _gr.source(_data[u][r].pred); |
|
| 360 |
} |
|
| 361 |
r = reached[u]; |
|
| 362 |
Arc e = _data[u][r].pred; |
|
| 363 |
_cycle_path->addFront(e); |
|
| 364 |
_cycle_length = _length[e]; |
|
| 365 |
_cycle_size = 1; |
|
| 366 |
Node v; |
|
| 367 |
while ((v = _gr.source(e)) != u) {
|
|
| 368 |
e = _data[v][--r].pred; |
|
| 369 |
_cycle_path->addFront(e); |
|
| 370 |
_cycle_length += _length[e]; |
|
| 371 |
++_cycle_size; |
|
| 372 |
} |
|
| 373 |
return true; |
|
| 374 |
} |
|
| 375 |
|
|
| 376 |
/// @} |
|
| 377 |
|
|
| 378 |
/// \name Query Functions |
|
| 379 |
/// The results of the algorithm can be obtained using these |
|
| 380 |
/// functions.\n |
|
| 381 |
/// The algorithm should be executed before using them. |
|
| 382 |
|
|
| 383 |
/// @{
|
|
| 384 |
|
|
| 385 |
/// \brief Return the total length of the found cycle. |
|
| 386 |
/// |
|
| 387 |
/// This function returns the total length of the found cycle. |
|
| 388 |
/// |
|
| 389 |
/// \pre \ref run() or \ref findMinMean() must be called before |
|
| 390 |
/// using this function. |
|
| 391 |
LargeValue cycleLength() const {
|
|
| 392 |
return _cycle_length; |
|
| 393 |
} |
|
| 394 |
|
|
| 395 |
/// \brief Return the number of arcs on the found cycle. |
|
| 396 |
/// |
|
| 397 |
/// This function returns the number of arcs on the found cycle. |
|
| 398 |
/// |
|
| 399 |
/// \pre \ref run() or \ref findMinMean() must be called before |
|
| 400 |
/// using this function. |
|
| 401 |
int cycleArcNum() const {
|
|
| 402 |
return _cycle_size; |
|
| 403 |
} |
|
| 404 |
|
|
| 405 |
/// \brief Return the mean length of the found cycle. |
|
| 406 |
/// |
|
| 407 |
/// This function returns the mean length of the found cycle. |
|
| 408 |
/// |
|
| 409 |
/// \note <tt>alg.cycleMean()</tt> is just a shortcut of the |
|
| 410 |
/// following code. |
|
| 411 |
/// \code |
|
| 412 |
/// return static_cast<double>(alg.cycleLength()) / alg.cycleArcNum(); |
|
| 413 |
/// \endcode |
|
| 414 |
/// |
|
| 415 |
/// \pre \ref run() or \ref findMinMean() must be called before |
|
| 416 |
/// using this function. |
|
| 417 |
double cycleMean() const {
|
|
| 418 |
return static_cast<double>(_cycle_length) / _cycle_size; |
|
| 419 |
} |
|
| 420 |
|
|
| 421 |
/// \brief Return the found cycle. |
|
| 422 |
/// |
|
| 423 |
/// This function returns a const reference to the path structure |
|
| 424 |
/// storing the found cycle. |
|
| 425 |
/// |
|
| 426 |
/// \pre \ref run() or \ref findCycle() must be called before using |
|
| 427 |
/// this function. |
|
| 428 |
const Path& cycle() const {
|
|
| 429 |
return *_cycle_path; |
|
| 430 |
} |
|
| 431 |
|
|
| 432 |
///@} |
|
| 433 |
|
|
| 434 |
private: |
|
| 435 |
|
|
| 436 |
// Initialization |
|
| 437 |
void init() {
|
|
| 438 |
if (!_cycle_path) {
|
|
| 439 |
_local_path = true; |
|
| 440 |
_cycle_path = new Path; |
|
| 441 |
} |
|
| 442 |
_cycle_path->clear(); |
|
| 443 |
_cycle_length = 0; |
|
| 444 |
_cycle_size = 1; |
|
| 445 |
_cycle_node = INVALID; |
|
| 446 |
for (NodeIt u(_gr); u != INVALID; ++u) |
|
| 447 |
_data[u].clear(); |
|
| 448 |
} |
|
| 449 |
|
|
| 450 |
// Find strongly connected components and initialize _comp_nodes |
|
| 451 |
// and _out_arcs |
|
| 452 |
void findComponents() {
|
|
| 453 |
_comp_num = stronglyConnectedComponents(_gr, _comp); |
|
| 454 |
_comp_nodes.resize(_comp_num); |
|
| 455 |
if (_comp_num == 1) {
|
|
| 456 |
_comp_nodes[0].clear(); |
|
| 457 |
for (NodeIt n(_gr); n != INVALID; ++n) {
|
|
| 458 |
_comp_nodes[0].push_back(n); |
|
| 459 |
_out_arcs[n].clear(); |
|
| 460 |
for (OutArcIt a(_gr, n); a != INVALID; ++a) {
|
|
| 461 |
_out_arcs[n].push_back(a); |
|
| 462 |
} |
|
| 463 |
} |
|
| 464 |
} else {
|
|
| 465 |
for (int i = 0; i < _comp_num; ++i) |
|
| 466 |
_comp_nodes[i].clear(); |
|
| 467 |
for (NodeIt n(_gr); n != INVALID; ++n) {
|
|
| 468 |
int k = _comp[n]; |
|
| 469 |
_comp_nodes[k].push_back(n); |
|
| 470 |
_out_arcs[n].clear(); |
|
| 471 |
for (OutArcIt a(_gr, n); a != INVALID; ++a) {
|
|
| 472 |
if (_comp[_gr.target(a)] == k) _out_arcs[n].push_back(a); |
|
| 473 |
} |
|
| 474 |
} |
|
| 475 |
} |
|
| 476 |
} |
|
| 477 |
|
|
| 478 |
// Initialize path data for the current component |
|
| 479 |
bool initComponent(int comp) {
|
|
| 480 |
_nodes = &(_comp_nodes[comp]); |
|
| 481 |
int n = _nodes->size(); |
|
| 482 |
if (n < 1 || (n == 1 && _out_arcs[(*_nodes)[0]].size() == 0)) {
|
|
| 483 |
return false; |
|
| 484 |
} |
|
| 485 |
for (int i = 0; i < n; ++i) {
|
|
| 486 |
_data[(*_nodes)[i]].resize(n + 1, PathData(INF)); |
|
| 487 |
} |
|
| 488 |
return true; |
|
| 489 |
} |
|
| 490 |
|
|
| 491 |
// Process all rounds of computing path data for the current component. |
|
| 492 |
// _data[v][k] is the length of a shortest directed walk from the root |
|
| 493 |
// node to node v containing exactly k arcs. |
|
| 494 |
void processRounds() {
|
|
| 495 |
Node start = (*_nodes)[0]; |
|
| 496 |
_data[start][0] = PathData(0); |
|
| 497 |
_process.clear(); |
|
| 498 |
_process.push_back(start); |
|
| 499 |
|
|
| 500 |
int k, n = _nodes->size(); |
|
| 501 |
for (k = 1; k <= n && int(_process.size()) < n; ++k) {
|
|
| 502 |
processNextBuildRound(k); |
|
| 503 |
} |
|
| 504 |
for ( ; k <= n; ++k) {
|
|
| 505 |
processNextFullRound(k); |
|
| 506 |
} |
|
| 507 |
} |
|
| 508 |
|
|
| 509 |
// Process one round and rebuild _process |
|
| 510 |
void processNextBuildRound(int k) {
|
|
| 511 |
std::vector<Node> next; |
|
| 512 |
Node u, v; |
|
| 513 |
Arc e; |
|
| 514 |
LargeValue d; |
|
| 515 |
for (int i = 0; i < int(_process.size()); ++i) {
|
|
| 516 |
u = _process[i]; |
|
| 517 |
for (int j = 0; j < int(_out_arcs[u].size()); ++j) {
|
|
| 518 |
e = _out_arcs[u][j]; |
|
| 519 |
v = _gr.target(e); |
|
| 520 |
d = _data[u][k-1].dist + _length[e]; |
|
| 521 |
if (_tolerance.less(d, _data[v][k].dist)) {
|
|
| 522 |
if (_data[v][k].dist == INF) next.push_back(v); |
|
| 523 |
_data[v][k] = PathData(d, e); |
|
| 524 |
} |
|
| 525 |
} |
|
| 526 |
} |
|
| 527 |
_process.swap(next); |
|
| 528 |
} |
|
| 529 |
|
|
| 530 |
// Process one round using _nodes instead of _process |
|
| 531 |
void processNextFullRound(int k) {
|
|
| 532 |
Node u, v; |
|
| 533 |
Arc e; |
|
| 534 |
LargeValue d; |
|
| 535 |
for (int i = 0; i < int(_nodes->size()); ++i) {
|
|
| 536 |
u = (*_nodes)[i]; |
|
| 537 |
for (int j = 0; j < int(_out_arcs[u].size()); ++j) {
|
|
| 538 |
e = _out_arcs[u][j]; |
|
| 539 |
v = _gr.target(e); |
|
| 540 |
d = _data[u][k-1].dist + _length[e]; |
|
| 541 |
if (_tolerance.less(d, _data[v][k].dist)) {
|
|
| 542 |
_data[v][k] = PathData(d, e); |
|
| 543 |
} |
|
| 544 |
} |
|
| 545 |
} |
|
| 546 |
} |
|
| 547 |
|
|
| 548 |
// Update the minimum cycle mean |
|
| 549 |
void updateMinMean() {
|
|
| 550 |
int n = _nodes->size(); |
|
| 551 |
for (int i = 0; i < n; ++i) {
|
|
| 552 |
Node u = (*_nodes)[i]; |
|
| 553 |
if (_data[u][n].dist == INF) continue; |
|
| 554 |
LargeValue length, max_length = 0; |
|
| 555 |
int size, max_size = 1; |
|
| 556 |
bool found_curr = false; |
|
| 557 |
for (int k = 0; k < n; ++k) {
|
|
| 558 |
if (_data[u][k].dist == INF) continue; |
|
| 559 |
length = _data[u][n].dist - _data[u][k].dist; |
|
| 560 |
size = n - k; |
|
| 561 |
if (!found_curr || length * max_size > max_length * size) {
|
|
| 562 |
found_curr = true; |
|
| 563 |
max_length = length; |
|
| 564 |
max_size = size; |
|
| 565 |
} |
|
| 566 |
} |
|
| 567 |
if ( found_curr && (_cycle_node == INVALID || |
|
| 568 |
max_length * _cycle_size < _cycle_length * max_size) ) {
|
|
| 569 |
_cycle_length = max_length; |
|
| 570 |
_cycle_size = max_size; |
|
| 571 |
_cycle_node = u; |
|
| 572 |
} |
|
| 573 |
} |
|
| 574 |
} |
|
| 575 |
|
|
| 576 |
}; //class Karp |
|
| 577 |
|
|
| 578 |
///@} |
|
| 579 |
|
|
| 580 |
} //namespace lemon |
|
| 581 |
|
|
| 582 |
#endif //LEMON_KARP_H |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_KARY_HEAP_H |
|
| 20 |
#define LEMON_KARY_HEAP_H |
|
| 21 |
|
|
| 22 |
///\ingroup heaps |
|
| 23 |
///\file |
|
| 24 |
///\brief Fourary heap implementation. |
|
| 25 |
|
|
| 26 |
#include <vector> |
|
| 27 |
#include <utility> |
|
| 28 |
#include <functional> |
|
| 29 |
|
|
| 30 |
namespace lemon {
|
|
| 31 |
|
|
| 32 |
/// \ingroup heaps |
|
| 33 |
/// |
|
| 34 |
///\brief K-ary heap data structure. |
|
| 35 |
/// |
|
| 36 |
/// This class implements the \e K-ary \e heap data structure. |
|
| 37 |
/// It fully conforms to the \ref concepts::Heap "heap concept". |
|
| 38 |
/// |
|
| 39 |
/// The \ref KaryHeap "K-ary heap" is a generalization of the |
|
| 40 |
/// \ref BinHeap "binary heap" structure, its nodes have at most |
|
| 41 |
/// \c K children, instead of two. |
|
| 42 |
/// \ref BinHeap and \ref FouraryHeap are specialized implementations |
|
| 43 |
/// of this structure for <tt>K=2</tt> and <tt>K=4</tt>, respectively. |
|
| 44 |
/// |
|
| 45 |
/// \tparam PR Type of the priorities of the items. |
|
| 46 |
/// \tparam IM A read-writable item map with \c int values, used |
|
| 47 |
/// internally to handle the cross references. |
|
| 48 |
/// \tparam K The degree of the heap, each node have at most \e K |
|
| 49 |
/// children. The default is 16. Powers of two are suggested to use |
|
| 50 |
/// so that the multiplications and divisions needed to traverse the |
|
| 51 |
/// nodes of the heap could be performed faster. |
|
| 52 |
/// \tparam CMP A functor class for comparing the priorities. |
|
| 53 |
/// The default is \c std::less<PR>. |
|
| 54 |
/// |
|
| 55 |
///\sa BinHeap |
|
| 56 |
///\sa FouraryHeap |
|
| 57 |
#ifdef DOXYGEN |
|
| 58 |
template <typename PR, typename IM, int K, typename CMP> |
|
| 59 |
#else |
|
| 60 |
template <typename PR, typename IM, int K = 16, |
|
| 61 |
typename CMP = std::less<PR> > |
|
| 62 |
#endif |
|
| 63 |
class KaryHeap {
|
|
| 64 |
public: |
|
| 65 |
/// Type of the item-int map. |
|
| 66 |
typedef IM ItemIntMap; |
|
| 67 |
/// Type of the priorities. |
|
| 68 |
typedef PR Prio; |
|
| 69 |
/// Type of the items stored in the heap. |
|
| 70 |
typedef typename ItemIntMap::Key Item; |
|
| 71 |
/// Type of the item-priority pairs. |
|
| 72 |
typedef std::pair<Item,Prio> Pair; |
|
| 73 |
/// Functor type for comparing the priorities. |
|
| 74 |
typedef CMP Compare; |
|
| 75 |
|
|
| 76 |
/// \brief Type to represent the states of the items. |
|
| 77 |
/// |
|
| 78 |
/// Each item has a state associated to it. It can be "in heap", |
|
| 79 |
/// "pre-heap" or "post-heap". The latter two are indifferent from the |
|
| 80 |
/// heap's point of view, but may be useful to the user. |
|
| 81 |
/// |
|
| 82 |
/// The item-int map must be initialized in such way that it assigns |
|
| 83 |
/// \c PRE_HEAP (<tt>-1</tt>) to any element to be put in the heap. |
|
| 84 |
enum State {
|
|
| 85 |
IN_HEAP = 0, ///< = 0. |
|
| 86 |
PRE_HEAP = -1, ///< = -1. |
|
| 87 |
POST_HEAP = -2 ///< = -2. |
|
| 88 |
}; |
|
| 89 |
|
|
| 90 |
private: |
|
| 91 |
std::vector<Pair> _data; |
|
| 92 |
Compare _comp; |
|
| 93 |
ItemIntMap &_iim; |
|
| 94 |
|
|
| 95 |
public: |
|
| 96 |
/// \brief Constructor. |
|
| 97 |
/// |
|
| 98 |
/// Constructor. |
|
| 99 |
/// \param map A map that assigns \c int values to the items. |
|
| 100 |
/// It is used internally to handle the cross references. |
|
| 101 |
/// The assigned value must be \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 102 |
explicit KaryHeap(ItemIntMap &map) : _iim(map) {}
|
|
| 103 |
|
|
| 104 |
/// \brief Constructor. |
|
| 105 |
/// |
|
| 106 |
/// Constructor. |
|
| 107 |
/// \param map A map that assigns \c int values to the items. |
|
| 108 |
/// It is used internally to handle the cross references. |
|
| 109 |
/// The assigned value must be \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 110 |
/// \param comp The function object used for comparing the priorities. |
|
| 111 |
KaryHeap(ItemIntMap &map, const Compare &comp) |
|
| 112 |
: _iim(map), _comp(comp) {}
|
|
| 113 |
|
|
| 114 |
/// \brief The number of items stored in the heap. |
|
| 115 |
/// |
|
| 116 |
/// This function returns the number of items stored in the heap. |
|
| 117 |
int size() const { return _data.size(); }
|
|
| 118 |
|
|
| 119 |
/// \brief Check if the heap is empty. |
|
| 120 |
/// |
|
| 121 |
/// This function returns \c true if the heap is empty. |
|
| 122 |
bool empty() const { return _data.empty(); }
|
|
| 123 |
|
|
| 124 |
/// \brief Make the heap empty. |
|
| 125 |
/// |
|
| 126 |
/// This functon makes the heap empty. |
|
| 127 |
/// It does not change the cross reference map. If you want to reuse |
|
| 128 |
/// a heap that is not surely empty, you should first clear it and |
|
| 129 |
/// then you should set the cross reference map to \c PRE_HEAP |
|
| 130 |
/// for each item. |
|
| 131 |
void clear() { _data.clear(); }
|
|
| 132 |
|
|
| 133 |
private: |
|
| 134 |
int parent(int i) { return (i-1)/K; }
|
|
| 135 |
int firstChild(int i) { return K*i+1; }
|
|
| 136 |
|
|
| 137 |
bool less(const Pair &p1, const Pair &p2) const {
|
|
| 138 |
return _comp(p1.second, p2.second); |
|
| 139 |
} |
|
| 140 |
|
|
| 141 |
void bubbleUp(int hole, Pair p) {
|
|
| 142 |
int par = parent(hole); |
|
| 143 |
while( hole>0 && less(p,_data[par]) ) {
|
|
| 144 |
move(_data[par],hole); |
|
| 145 |
hole = par; |
|
| 146 |
par = parent(hole); |
|
| 147 |
} |
|
| 148 |
move(p, hole); |
|
| 149 |
} |
|
| 150 |
|
|
| 151 |
void bubbleDown(int hole, Pair p, int length) {
|
|
| 152 |
if( length>1 ) {
|
|
| 153 |
int child = firstChild(hole); |
|
| 154 |
while( child+K<=length ) {
|
|
| 155 |
int min=child; |
|
| 156 |
for (int i=1; i<K; ++i) {
|
|
| 157 |
if( less(_data[child+i], _data[min]) ) |
|
| 158 |
min=child+i; |
|
| 159 |
} |
|
| 160 |
if( !less(_data[min], p) ) |
|
| 161 |
goto ok; |
|
| 162 |
move(_data[min], hole); |
|
| 163 |
hole = min; |
|
| 164 |
child = firstChild(hole); |
|
| 165 |
} |
|
| 166 |
if ( child<length ) {
|
|
| 167 |
int min = child; |
|
| 168 |
while (++child < length) {
|
|
| 169 |
if( less(_data[child], _data[min]) ) |
|
| 170 |
min=child; |
|
| 171 |
} |
|
| 172 |
if( less(_data[min], p) ) {
|
|
| 173 |
move(_data[min], hole); |
|
| 174 |
hole = min; |
|
| 175 |
} |
|
| 176 |
} |
|
| 177 |
} |
|
| 178 |
ok: |
|
| 179 |
move(p, hole); |
|
| 180 |
} |
|
| 181 |
|
|
| 182 |
void move(const Pair &p, int i) {
|
|
| 183 |
_data[i] = p; |
|
| 184 |
_iim.set(p.first, i); |
|
| 185 |
} |
|
| 186 |
|
|
| 187 |
public: |
|
| 188 |
/// \brief Insert a pair of item and priority into the heap. |
|
| 189 |
/// |
|
| 190 |
/// This function inserts \c p.first to the heap with priority |
|
| 191 |
/// \c p.second. |
|
| 192 |
/// \param p The pair to insert. |
|
| 193 |
/// \pre \c p.first must not be stored in the heap. |
|
| 194 |
void push(const Pair &p) {
|
|
| 195 |
int n = _data.size(); |
|
| 196 |
_data.resize(n+1); |
|
| 197 |
bubbleUp(n, p); |
|
| 198 |
} |
|
| 199 |
|
|
| 200 |
/// \brief Insert an item into the heap with the given priority. |
|
| 201 |
/// |
|
| 202 |
/// This function inserts the given item into the heap with the |
|
| 203 |
/// given priority. |
|
| 204 |
/// \param i The item to insert. |
|
| 205 |
/// \param p The priority of the item. |
|
| 206 |
/// \pre \e i must not be stored in the heap. |
|
| 207 |
void push(const Item &i, const Prio &p) { push(Pair(i,p)); }
|
|
| 208 |
|
|
| 209 |
/// \brief Return the item having minimum priority. |
|
| 210 |
/// |
|
| 211 |
/// This function returns the item having minimum priority. |
|
| 212 |
/// \pre The heap must be non-empty. |
|
| 213 |
Item top() const { return _data[0].first; }
|
|
| 214 |
|
|
| 215 |
/// \brief The minimum priority. |
|
| 216 |
/// |
|
| 217 |
/// This function returns the minimum priority. |
|
| 218 |
/// \pre The heap must be non-empty. |
|
| 219 |
Prio prio() const { return _data[0].second; }
|
|
| 220 |
|
|
| 221 |
/// \brief Remove the item having minimum priority. |
|
| 222 |
/// |
|
| 223 |
/// This function removes the item having minimum priority. |
|
| 224 |
/// \pre The heap must be non-empty. |
|
| 225 |
void pop() {
|
|
| 226 |
int n = _data.size()-1; |
|
| 227 |
_iim.set(_data[0].first, POST_HEAP); |
|
| 228 |
if (n>0) bubbleDown(0, _data[n], n); |
|
| 229 |
_data.pop_back(); |
|
| 230 |
} |
|
| 231 |
|
|
| 232 |
/// \brief Remove the given item from the heap. |
|
| 233 |
/// |
|
| 234 |
/// This function removes the given item from the heap if it is |
|
| 235 |
/// already stored. |
|
| 236 |
/// \param i The item to delete. |
|
| 237 |
/// \pre \e i must be in the heap. |
|
| 238 |
void erase(const Item &i) {
|
|
| 239 |
int h = _iim[i]; |
|
| 240 |
int n = _data.size()-1; |
|
| 241 |
_iim.set(_data[h].first, POST_HEAP); |
|
| 242 |
if( h<n ) {
|
|
| 243 |
if( less(_data[parent(h)], _data[n]) ) |
|
| 244 |
bubbleDown(h, _data[n], n); |
|
| 245 |
else |
|
| 246 |
bubbleUp(h, _data[n]); |
|
| 247 |
} |
|
| 248 |
_data.pop_back(); |
|
| 249 |
} |
|
| 250 |
|
|
| 251 |
/// \brief The priority of the given item. |
|
| 252 |
/// |
|
| 253 |
/// This function returns the priority of the given item. |
|
| 254 |
/// \param i The item. |
|
| 255 |
/// \pre \e i must be in the heap. |
|
| 256 |
Prio operator[](const Item &i) const {
|
|
| 257 |
int idx = _iim[i]; |
|
| 258 |
return _data[idx].second; |
|
| 259 |
} |
|
| 260 |
|
|
| 261 |
/// \brief Set the priority of an item or insert it, if it is |
|
| 262 |
/// not stored in the heap. |
|
| 263 |
/// |
|
| 264 |
/// This method sets the priority of the given item if it is |
|
| 265 |
/// already stored in the heap. Otherwise it inserts the given |
|
| 266 |
/// item into the heap with the given priority. |
|
| 267 |
/// \param i The item. |
|
| 268 |
/// \param p The priority. |
|
| 269 |
void set(const Item &i, const Prio &p) {
|
|
| 270 |
int idx = _iim[i]; |
|
| 271 |
if( idx<0 ) |
|
| 272 |
push(i,p); |
|
| 273 |
else if( _comp(p, _data[idx].second) ) |
|
| 274 |
bubbleUp(idx, Pair(i,p)); |
|
| 275 |
else |
|
| 276 |
bubbleDown(idx, Pair(i,p), _data.size()); |
|
| 277 |
} |
|
| 278 |
|
|
| 279 |
/// \brief Decrease the priority of an item to the given value. |
|
| 280 |
/// |
|
| 281 |
/// This function decreases the priority of an item to the given value. |
|
| 282 |
/// \param i The item. |
|
| 283 |
/// \param p The priority. |
|
| 284 |
/// \pre \e i must be stored in the heap with priority at least \e p. |
|
| 285 |
void decrease(const Item &i, const Prio &p) {
|
|
| 286 |
int idx = _iim[i]; |
|
| 287 |
bubbleUp(idx, Pair(i,p)); |
|
| 288 |
} |
|
| 289 |
|
|
| 290 |
/// \brief Increase the priority of an item to the given value. |
|
| 291 |
/// |
|
| 292 |
/// This function increases the priority of an item to the given value. |
|
| 293 |
/// \param i The item. |
|
| 294 |
/// \param p The priority. |
|
| 295 |
/// \pre \e i must be stored in the heap with priority at most \e p. |
|
| 296 |
void increase(const Item &i, const Prio &p) {
|
|
| 297 |
int idx = _iim[i]; |
|
| 298 |
bubbleDown(idx, Pair(i,p), _data.size()); |
|
| 299 |
} |
|
| 300 |
|
|
| 301 |
/// \brief Return the state of an item. |
|
| 302 |
/// |
|
| 303 |
/// This method returns \c PRE_HEAP if the given item has never |
|
| 304 |
/// been in the heap, \c IN_HEAP if it is in the heap at the moment, |
|
| 305 |
/// and \c POST_HEAP otherwise. |
|
| 306 |
/// In the latter case it is possible that the item will get back |
|
| 307 |
/// to the heap again. |
|
| 308 |
/// \param i The item. |
|
| 309 |
State state(const Item &i) const {
|
|
| 310 |
int s = _iim[i]; |
|
| 311 |
if (s>=0) s=0; |
|
| 312 |
return State(s); |
|
| 313 |
} |
|
| 314 |
|
|
| 315 |
/// \brief Set the state of an item in the heap. |
|
| 316 |
/// |
|
| 317 |
/// This function sets the state of the given item in the heap. |
|
| 318 |
/// It can be used to manually clear the heap when it is important |
|
| 319 |
/// to achive better time complexity. |
|
| 320 |
/// \param i The item. |
|
| 321 |
/// \param st The state. It should not be \c IN_HEAP. |
|
| 322 |
void state(const Item& i, State st) {
|
|
| 323 |
switch (st) {
|
|
| 324 |
case POST_HEAP: |
|
| 325 |
case PRE_HEAP: |
|
| 326 |
if (state(i) == IN_HEAP) erase(i); |
|
| 327 |
_iim[i] = st; |
|
| 328 |
break; |
|
| 329 |
case IN_HEAP: |
|
| 330 |
break; |
|
| 331 |
} |
|
| 332 |
} |
|
| 333 |
|
|
| 334 |
/// \brief Replace an item in the heap. |
|
| 335 |
/// |
|
| 336 |
/// This function replaces item \c i with item \c j. |
|
| 337 |
/// Item \c i must be in the heap, while \c j must be out of the heap. |
|
| 338 |
/// After calling this method, item \c i will be out of the |
|
| 339 |
/// heap and \c j will be in the heap with the same prioriority |
|
| 340 |
/// as item \c i had before. |
|
| 341 |
void replace(const Item& i, const Item& j) {
|
|
| 342 |
int idx=_iim[i]; |
|
| 343 |
_iim.set(i, _iim[j]); |
|
| 344 |
_iim.set(j, idx); |
|
| 345 |
_data[idx].first=j; |
|
| 346 |
} |
|
| 347 |
|
|
| 348 |
}; // class KaryHeap |
|
| 349 |
|
|
| 350 |
} // namespace lemon |
|
| 351 |
|
|
| 352 |
#endif // LEMON_KARY_HEAP_H |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2008 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_MIN_COST_ARBORESCENCE_H |
|
| 20 |
#define LEMON_MIN_COST_ARBORESCENCE_H |
|
| 21 |
|
|
| 22 |
///\ingroup spantree |
|
| 23 |
///\file |
|
| 24 |
///\brief Minimum Cost Arborescence algorithm. |
|
| 25 |
|
|
| 26 |
#include <vector> |
|
| 27 |
|
|
| 28 |
#include <lemon/list_graph.h> |
|
| 29 |
#include <lemon/bin_heap.h> |
|
| 30 |
#include <lemon/assert.h> |
|
| 31 |
|
|
| 32 |
namespace lemon {
|
|
| 33 |
|
|
| 34 |
|
|
| 35 |
/// \brief Default traits class for MinCostArborescence class. |
|
| 36 |
/// |
|
| 37 |
/// Default traits class for MinCostArborescence class. |
|
| 38 |
/// \param GR Digraph type. |
|
| 39 |
/// \param CM Type of the cost map. |
|
| 40 |
template <class GR, class CM> |
|
| 41 |
struct MinCostArborescenceDefaultTraits{
|
|
| 42 |
|
|
| 43 |
/// \brief The digraph type the algorithm runs on. |
|
| 44 |
typedef GR Digraph; |
|
| 45 |
|
|
| 46 |
/// \brief The type of the map that stores the arc costs. |
|
| 47 |
/// |
|
| 48 |
/// The type of the map that stores the arc costs. |
|
| 49 |
/// It must conform to the \ref concepts::ReadMap "ReadMap" concept. |
|
| 50 |
typedef CM CostMap; |
|
| 51 |
|
|
| 52 |
/// \brief The value type of the costs. |
|
| 53 |
/// |
|
| 54 |
/// The value type of the costs. |
|
| 55 |
typedef typename CostMap::Value Value; |
|
| 56 |
|
|
| 57 |
/// \brief The type of the map that stores which arcs are in the |
|
| 58 |
/// arborescence. |
|
| 59 |
/// |
|
| 60 |
/// The type of the map that stores which arcs are in the |
|
| 61 |
/// arborescence. It must conform to the \ref concepts::WriteMap |
|
| 62 |
/// "WriteMap" concept, and its value type must be \c bool |
|
| 63 |
/// (or convertible). Initially it will be set to \c false on each |
|
| 64 |
/// arc, then it will be set on each arborescence arc once. |
|
| 65 |
typedef typename Digraph::template ArcMap<bool> ArborescenceMap; |
|
| 66 |
|
|
| 67 |
/// \brief Instantiates a \c ArborescenceMap. |
|
| 68 |
/// |
|
| 69 |
/// This function instantiates a \c ArborescenceMap. |
|
| 70 |
/// \param digraph The digraph to which we would like to calculate |
|
| 71 |
/// the \c ArborescenceMap. |
|
| 72 |
static ArborescenceMap *createArborescenceMap(const Digraph &digraph){
|
|
| 73 |
return new ArborescenceMap(digraph); |
|
| 74 |
} |
|
| 75 |
|
|
| 76 |
/// \brief The type of the \c PredMap |
|
| 77 |
/// |
|
| 78 |
/// The type of the \c PredMap. It must confrom to the |
|
| 79 |
/// \ref concepts::WriteMap "WriteMap" concept, and its value type |
|
| 80 |
/// must be the \c Arc type of the digraph. |
|
| 81 |
typedef typename Digraph::template NodeMap<typename Digraph::Arc> PredMap; |
|
| 82 |
|
|
| 83 |
/// \brief Instantiates a \c PredMap. |
|
| 84 |
/// |
|
| 85 |
/// This function instantiates a \c PredMap. |
|
| 86 |
/// \param digraph The digraph to which we would like to define the |
|
| 87 |
/// \c PredMap. |
|
| 88 |
static PredMap *createPredMap(const Digraph &digraph){
|
|
| 89 |
return new PredMap(digraph); |
|
| 90 |
} |
|
| 91 |
|
|
| 92 |
}; |
|
| 93 |
|
|
| 94 |
/// \ingroup spantree |
|
| 95 |
/// |
|
| 96 |
/// \brief Minimum Cost Arborescence algorithm class. |
|
| 97 |
/// |
|
| 98 |
/// This class provides an efficient implementation of the |
|
| 99 |
/// Minimum Cost Arborescence algorithm. The arborescence is a tree |
|
| 100 |
/// which is directed from a given source node of the digraph. One or |
|
| 101 |
/// more sources should be given to the algorithm and it will calculate |
|
| 102 |
/// the minimum cost subgraph that is the union of arborescences with the |
|
| 103 |
/// given sources and spans all the nodes which are reachable from the |
|
| 104 |
/// sources. The time complexity of the algorithm is O(n<sup>2</sup>+e). |
|
| 105 |
/// |
|
| 106 |
/// The algorithm also provides an optimal dual solution, therefore |
|
| 107 |
/// the optimality of the solution can be checked. |
|
| 108 |
/// |
|
| 109 |
/// \param GR The digraph type the algorithm runs on. |
|
| 110 |
/// \param CM A read-only arc map storing the costs of the |
|
| 111 |
/// arcs. It is read once for each arc, so the map may involve in |
|
| 112 |
/// relatively time consuming process to compute the arc costs if |
|
| 113 |
/// it is necessary. The default map type is \ref |
|
| 114 |
/// concepts::Digraph::ArcMap "Digraph::ArcMap<int>". |
|
| 115 |
/// \param TR Traits class to set various data types used |
|
| 116 |
/// by the algorithm. The default traits class is |
|
| 117 |
/// \ref MinCostArborescenceDefaultTraits |
|
| 118 |
/// "MinCostArborescenceDefaultTraits<GR, CM>". |
|
| 119 |
#ifndef DOXYGEN |
|
| 120 |
template <typename GR, |
|
| 121 |
typename CM = typename GR::template ArcMap<int>, |
|
| 122 |
typename TR = |
|
| 123 |
MinCostArborescenceDefaultTraits<GR, CM> > |
|
| 124 |
#else |
|
| 125 |
template <typename GR, typename CM, typedef TR> |
|
| 126 |
#endif |
|
| 127 |
class MinCostArborescence {
|
|
| 128 |
public: |
|
| 129 |
|
|
| 130 |
/// \brief The \ref MinCostArborescenceDefaultTraits "traits class" |
|
| 131 |
/// of the algorithm. |
|
| 132 |
typedef TR Traits; |
|
| 133 |
/// The type of the underlying digraph. |
|
| 134 |
typedef typename Traits::Digraph Digraph; |
|
| 135 |
/// The type of the map that stores the arc costs. |
|
| 136 |
typedef typename Traits::CostMap CostMap; |
|
| 137 |
///The type of the costs of the arcs. |
|
| 138 |
typedef typename Traits::Value Value; |
|
| 139 |
///The type of the predecessor map. |
|
| 140 |
typedef typename Traits::PredMap PredMap; |
|
| 141 |
///The type of the map that stores which arcs are in the arborescence. |
|
| 142 |
typedef typename Traits::ArborescenceMap ArborescenceMap; |
|
| 143 |
|
|
| 144 |
typedef MinCostArborescence Create; |
|
| 145 |
|
|
| 146 |
private: |
|
| 147 |
|
|
| 148 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
|
| 149 |
|
|
| 150 |
struct CostArc {
|
|
| 151 |
|
|
| 152 |
Arc arc; |
|
| 153 |
Value value; |
|
| 154 |
|
|
| 155 |
CostArc() {}
|
|
| 156 |
CostArc(Arc _arc, Value _value) : arc(_arc), value(_value) {}
|
|
| 157 |
|
|
| 158 |
}; |
|
| 159 |
|
|
| 160 |
const Digraph *_digraph; |
|
| 161 |
const CostMap *_cost; |
|
| 162 |
|
|
| 163 |
PredMap *_pred; |
|
| 164 |
bool local_pred; |
|
| 165 |
|
|
| 166 |
ArborescenceMap *_arborescence; |
|
| 167 |
bool local_arborescence; |
|
| 168 |
|
|
| 169 |
typedef typename Digraph::template ArcMap<int> ArcOrder; |
|
| 170 |
ArcOrder *_arc_order; |
|
| 171 |
|
|
| 172 |
typedef typename Digraph::template NodeMap<int> NodeOrder; |
|
| 173 |
NodeOrder *_node_order; |
|
| 174 |
|
|
| 175 |
typedef typename Digraph::template NodeMap<CostArc> CostArcMap; |
|
| 176 |
CostArcMap *_cost_arcs; |
|
| 177 |
|
|
| 178 |
struct StackLevel {
|
|
| 179 |
|
|
| 180 |
std::vector<CostArc> arcs; |
|
| 181 |
int node_level; |
|
| 182 |
|
|
| 183 |
}; |
|
| 184 |
|
|
| 185 |
std::vector<StackLevel> level_stack; |
|
| 186 |
std::vector<Node> queue; |
|
| 187 |
|
|
| 188 |
typedef std::vector<typename Digraph::Node> DualNodeList; |
|
| 189 |
|
|
| 190 |
DualNodeList _dual_node_list; |
|
| 191 |
|
|
| 192 |
struct DualVariable {
|
|
| 193 |
int begin, end; |
|
| 194 |
Value value; |
|
| 195 |
|
|
| 196 |
DualVariable(int _begin, int _end, Value _value) |
|
| 197 |
: begin(_begin), end(_end), value(_value) {}
|
|
| 198 |
|
|
| 199 |
}; |
|
| 200 |
|
|
| 201 |
typedef std::vector<DualVariable> DualVariables; |
|
| 202 |
|
|
| 203 |
DualVariables _dual_variables; |
|
| 204 |
|
|
| 205 |
typedef typename Digraph::template NodeMap<int> HeapCrossRef; |
|
| 206 |
|
|
| 207 |
HeapCrossRef *_heap_cross_ref; |
|
| 208 |
|
|
| 209 |
typedef BinHeap<int, HeapCrossRef> Heap; |
|
| 210 |
|
|
| 211 |
Heap *_heap; |
|
| 212 |
|
|
| 213 |
protected: |
|
| 214 |
|
|
| 215 |
MinCostArborescence() {}
|
|
| 216 |
|
|
| 217 |
private: |
|
| 218 |
|
|
| 219 |
void createStructures() {
|
|
| 220 |
if (!_pred) {
|
|
| 221 |
local_pred = true; |
|
| 222 |
_pred = Traits::createPredMap(*_digraph); |
|
| 223 |
} |
|
| 224 |
if (!_arborescence) {
|
|
| 225 |
local_arborescence = true; |
|
| 226 |
_arborescence = Traits::createArborescenceMap(*_digraph); |
|
| 227 |
} |
|
| 228 |
if (!_arc_order) {
|
|
| 229 |
_arc_order = new ArcOrder(*_digraph); |
|
| 230 |
} |
|
| 231 |
if (!_node_order) {
|
|
| 232 |
_node_order = new NodeOrder(*_digraph); |
|
| 233 |
} |
|
| 234 |
if (!_cost_arcs) {
|
|
| 235 |
_cost_arcs = new CostArcMap(*_digraph); |
|
| 236 |
} |
|
| 237 |
if (!_heap_cross_ref) {
|
|
| 238 |
_heap_cross_ref = new HeapCrossRef(*_digraph, -1); |
|
| 239 |
} |
|
| 240 |
if (!_heap) {
|
|
| 241 |
_heap = new Heap(*_heap_cross_ref); |
|
| 242 |
} |
|
| 243 |
} |
|
| 244 |
|
|
| 245 |
void destroyStructures() {
|
|
| 246 |
if (local_arborescence) {
|
|
| 247 |
delete _arborescence; |
|
| 248 |
} |
|
| 249 |
if (local_pred) {
|
|
| 250 |
delete _pred; |
|
| 251 |
} |
|
| 252 |
if (_arc_order) {
|
|
| 253 |
delete _arc_order; |
|
| 254 |
} |
|
| 255 |
if (_node_order) {
|
|
| 256 |
delete _node_order; |
|
| 257 |
} |
|
| 258 |
if (_cost_arcs) {
|
|
| 259 |
delete _cost_arcs; |
|
| 260 |
} |
|
| 261 |
if (_heap) {
|
|
| 262 |
delete _heap; |
|
| 263 |
} |
|
| 264 |
if (_heap_cross_ref) {
|
|
| 265 |
delete _heap_cross_ref; |
|
| 266 |
} |
|
| 267 |
} |
|
| 268 |
|
|
| 269 |
Arc prepare(Node node) {
|
|
| 270 |
std::vector<Node> nodes; |
|
| 271 |
(*_node_order)[node] = _dual_node_list.size(); |
|
| 272 |
StackLevel level; |
|
| 273 |
level.node_level = _dual_node_list.size(); |
|
| 274 |
_dual_node_list.push_back(node); |
|
| 275 |
for (InArcIt it(*_digraph, node); it != INVALID; ++it) {
|
|
| 276 |
Arc arc = it; |
|
| 277 |
Node source = _digraph->source(arc); |
|
| 278 |
Value value = (*_cost)[it]; |
|
| 279 |
if (source == node || (*_node_order)[source] == -3) continue; |
|
| 280 |
if ((*_cost_arcs)[source].arc == INVALID) {
|
|
| 281 |
(*_cost_arcs)[source].arc = arc; |
|
| 282 |
(*_cost_arcs)[source].value = value; |
|
| 283 |
nodes.push_back(source); |
|
| 284 |
} else {
|
|
| 285 |
if ((*_cost_arcs)[source].value > value) {
|
|
| 286 |
(*_cost_arcs)[source].arc = arc; |
|
| 287 |
(*_cost_arcs)[source].value = value; |
|
| 288 |
} |
|
| 289 |
} |
|
| 290 |
} |
|
| 291 |
CostArc minimum = (*_cost_arcs)[nodes[0]]; |
|
| 292 |
for (int i = 1; i < int(nodes.size()); ++i) {
|
|
| 293 |
if ((*_cost_arcs)[nodes[i]].value < minimum.value) {
|
|
| 294 |
minimum = (*_cost_arcs)[nodes[i]]; |
|
| 295 |
} |
|
| 296 |
} |
|
| 297 |
(*_arc_order)[minimum.arc] = _dual_variables.size(); |
|
| 298 |
DualVariable var(_dual_node_list.size() - 1, |
|
| 299 |
_dual_node_list.size(), minimum.value); |
|
| 300 |
_dual_variables.push_back(var); |
|
| 301 |
for (int i = 0; i < int(nodes.size()); ++i) {
|
|
| 302 |
(*_cost_arcs)[nodes[i]].value -= minimum.value; |
|
| 303 |
level.arcs.push_back((*_cost_arcs)[nodes[i]]); |
|
| 304 |
(*_cost_arcs)[nodes[i]].arc = INVALID; |
|
| 305 |
} |
|
| 306 |
level_stack.push_back(level); |
|
| 307 |
return minimum.arc; |
|
| 308 |
} |
|
| 309 |
|
|
| 310 |
Arc contract(Node node) {
|
|
| 311 |
int node_bottom = bottom(node); |
|
| 312 |
std::vector<Node> nodes; |
|
| 313 |
while (!level_stack.empty() && |
|
| 314 |
level_stack.back().node_level >= node_bottom) {
|
|
| 315 |
for (int i = 0; i < int(level_stack.back().arcs.size()); ++i) {
|
|
| 316 |
Arc arc = level_stack.back().arcs[i].arc; |
|
| 317 |
Node source = _digraph->source(arc); |
|
| 318 |
Value value = level_stack.back().arcs[i].value; |
|
| 319 |
if ((*_node_order)[source] >= node_bottom) continue; |
|
| 320 |
if ((*_cost_arcs)[source].arc == INVALID) {
|
|
| 321 |
(*_cost_arcs)[source].arc = arc; |
|
| 322 |
(*_cost_arcs)[source].value = value; |
|
| 323 |
nodes.push_back(source); |
|
| 324 |
} else {
|
|
| 325 |
if ((*_cost_arcs)[source].value > value) {
|
|
| 326 |
(*_cost_arcs)[source].arc = arc; |
|
| 327 |
(*_cost_arcs)[source].value = value; |
|
| 328 |
} |
|
| 329 |
} |
|
| 330 |
} |
|
| 331 |
level_stack.pop_back(); |
|
| 332 |
} |
|
| 333 |
CostArc minimum = (*_cost_arcs)[nodes[0]]; |
|
| 334 |
for (int i = 1; i < int(nodes.size()); ++i) {
|
|
| 335 |
if ((*_cost_arcs)[nodes[i]].value < minimum.value) {
|
|
| 336 |
minimum = (*_cost_arcs)[nodes[i]]; |
|
| 337 |
} |
|
| 338 |
} |
|
| 339 |
(*_arc_order)[minimum.arc] = _dual_variables.size(); |
|
| 340 |
DualVariable var(node_bottom, _dual_node_list.size(), minimum.value); |
|
| 341 |
_dual_variables.push_back(var); |
|
| 342 |
StackLevel level; |
|
| 343 |
level.node_level = node_bottom; |
|
| 344 |
for (int i = 0; i < int(nodes.size()); ++i) {
|
|
| 345 |
(*_cost_arcs)[nodes[i]].value -= minimum.value; |
|
| 346 |
level.arcs.push_back((*_cost_arcs)[nodes[i]]); |
|
| 347 |
(*_cost_arcs)[nodes[i]].arc = INVALID; |
|
| 348 |
} |
|
| 349 |
level_stack.push_back(level); |
|
| 350 |
return minimum.arc; |
|
| 351 |
} |
|
| 352 |
|
|
| 353 |
int bottom(Node node) {
|
|
| 354 |
int k = level_stack.size() - 1; |
|
| 355 |
while (level_stack[k].node_level > (*_node_order)[node]) {
|
|
| 356 |
--k; |
|
| 357 |
} |
|
| 358 |
return level_stack[k].node_level; |
|
| 359 |
} |
|
| 360 |
|
|
| 361 |
void finalize(Arc arc) {
|
|
| 362 |
Node node = _digraph->target(arc); |
|
| 363 |
_heap->push(node, (*_arc_order)[arc]); |
|
| 364 |
_pred->set(node, arc); |
|
| 365 |
while (!_heap->empty()) {
|
|
| 366 |
Node source = _heap->top(); |
|
| 367 |
_heap->pop(); |
|
| 368 |
(*_node_order)[source] = -1; |
|
| 369 |
for (OutArcIt it(*_digraph, source); it != INVALID; ++it) {
|
|
| 370 |
if ((*_arc_order)[it] < 0) continue; |
|
| 371 |
Node target = _digraph->target(it); |
|
| 372 |
switch(_heap->state(target)) {
|
|
| 373 |
case Heap::PRE_HEAP: |
|
| 374 |
_heap->push(target, (*_arc_order)[it]); |
|
| 375 |
_pred->set(target, it); |
|
| 376 |
break; |
|
| 377 |
case Heap::IN_HEAP: |
|
| 378 |
if ((*_arc_order)[it] < (*_heap)[target]) {
|
|
| 379 |
_heap->decrease(target, (*_arc_order)[it]); |
|
| 380 |
_pred->set(target, it); |
|
| 381 |
} |
|
| 382 |
break; |
|
| 383 |
case Heap::POST_HEAP: |
|
| 384 |
break; |
|
| 385 |
} |
|
| 386 |
} |
|
| 387 |
_arborescence->set((*_pred)[source], true); |
|
| 388 |
} |
|
| 389 |
} |
|
| 390 |
|
|
| 391 |
|
|
| 392 |
public: |
|
| 393 |
|
|
| 394 |
/// \name Named Template Parameters |
|
| 395 |
|
|
| 396 |
/// @{
|
|
| 397 |
|
|
| 398 |
template <class T> |
|
| 399 |
struct SetArborescenceMapTraits : public Traits {
|
|
| 400 |
typedef T ArborescenceMap; |
|
| 401 |
static ArborescenceMap *createArborescenceMap(const Digraph &) |
|
| 402 |
{
|
|
| 403 |
LEMON_ASSERT(false, "ArborescenceMap is not initialized"); |
|
| 404 |
return 0; // ignore warnings |
|
| 405 |
} |
|
| 406 |
}; |
|
| 407 |
|
|
| 408 |
/// \brief \ref named-templ-param "Named parameter" for |
|
| 409 |
/// setting \c ArborescenceMap type |
|
| 410 |
/// |
|
| 411 |
/// \ref named-templ-param "Named parameter" for setting |
|
| 412 |
/// \c ArborescenceMap type. |
|
| 413 |
/// It must conform to the \ref concepts::WriteMap "WriteMap" concept, |
|
| 414 |
/// and its value type must be \c bool (or convertible). |
|
| 415 |
/// Initially it will be set to \c false on each arc, |
|
| 416 |
/// then it will be set on each arborescence arc once. |
|
| 417 |
template <class T> |
|
| 418 |
struct SetArborescenceMap |
|
| 419 |
: public MinCostArborescence<Digraph, CostMap, |
|
| 420 |
SetArborescenceMapTraits<T> > {
|
|
| 421 |
}; |
|
| 422 |
|
|
| 423 |
template <class T> |
|
| 424 |
struct SetPredMapTraits : public Traits {
|
|
| 425 |
typedef T PredMap; |
|
| 426 |
static PredMap *createPredMap(const Digraph &) |
|
| 427 |
{
|
|
| 428 |
LEMON_ASSERT(false, "PredMap is not initialized"); |
|
| 429 |
return 0; // ignore warnings |
|
| 430 |
} |
|
| 431 |
}; |
|
| 432 |
|
|
| 433 |
/// \brief \ref named-templ-param "Named parameter" for |
|
| 434 |
/// setting \c PredMap type |
|
| 435 |
/// |
|
| 436 |
/// \ref named-templ-param "Named parameter" for setting |
|
| 437 |
/// \c PredMap type. |
|
| 438 |
/// It must meet the \ref concepts::WriteMap "WriteMap" concept, |
|
| 439 |
/// and its value type must be the \c Arc type of the digraph. |
|
| 440 |
template <class T> |
|
| 441 |
struct SetPredMap |
|
| 442 |
: public MinCostArborescence<Digraph, CostMap, SetPredMapTraits<T> > {
|
|
| 443 |
}; |
|
| 444 |
|
|
| 445 |
/// @} |
|
| 446 |
|
|
| 447 |
/// \brief Constructor. |
|
| 448 |
/// |
|
| 449 |
/// \param digraph The digraph the algorithm will run on. |
|
| 450 |
/// \param cost The cost map used by the algorithm. |
|
| 451 |
MinCostArborescence(const Digraph& digraph, const CostMap& cost) |
|
| 452 |
: _digraph(&digraph), _cost(&cost), _pred(0), local_pred(false), |
|
| 453 |
_arborescence(0), local_arborescence(false), |
|
| 454 |
_arc_order(0), _node_order(0), _cost_arcs(0), |
|
| 455 |
_heap_cross_ref(0), _heap(0) {}
|
|
| 456 |
|
|
| 457 |
/// \brief Destructor. |
|
| 458 |
~MinCostArborescence() {
|
|
| 459 |
destroyStructures(); |
|
| 460 |
} |
|
| 461 |
|
|
| 462 |
/// \brief Sets the arborescence map. |
|
| 463 |
/// |
|
| 464 |
/// Sets the arborescence map. |
|
| 465 |
/// \return <tt>(*this)</tt> |
|
| 466 |
MinCostArborescence& arborescenceMap(ArborescenceMap& m) {
|
|
| 467 |
if (local_arborescence) {
|
|
| 468 |
delete _arborescence; |
|
| 469 |
} |
|
| 470 |
local_arborescence = false; |
|
| 471 |
_arborescence = &m; |
|
| 472 |
return *this; |
|
| 473 |
} |
|
| 474 |
|
|
| 475 |
/// \brief Sets the predecessor map. |
|
| 476 |
/// |
|
| 477 |
/// Sets the predecessor map. |
|
| 478 |
/// \return <tt>(*this)</tt> |
|
| 479 |
MinCostArborescence& predMap(PredMap& m) {
|
|
| 480 |
if (local_pred) {
|
|
| 481 |
delete _pred; |
|
| 482 |
} |
|
| 483 |
local_pred = false; |
|
| 484 |
_pred = &m; |
|
| 485 |
return *this; |
|
| 486 |
} |
|
| 487 |
|
|
| 488 |
/// \name Execution Control |
|
| 489 |
/// The simplest way to execute the algorithm is to use |
|
| 490 |
/// one of the member functions called \c run(...). \n |
|
| 491 |
/// If you need better control on the execution, |
|
| 492 |
/// you have to call \ref init() first, then you can add several |
|
| 493 |
/// source nodes with \ref addSource(). |
|
| 494 |
/// Finally \ref start() will perform the arborescence |
|
| 495 |
/// computation. |
|
| 496 |
|
|
| 497 |
///@{
|
|
| 498 |
|
|
| 499 |
/// \brief Initializes the internal data structures. |
|
| 500 |
/// |
|
| 501 |
/// Initializes the internal data structures. |
|
| 502 |
/// |
|
| 503 |
void init() {
|
|
| 504 |
createStructures(); |
|
| 505 |
_heap->clear(); |
|
| 506 |
for (NodeIt it(*_digraph); it != INVALID; ++it) {
|
|
| 507 |
(*_cost_arcs)[it].arc = INVALID; |
|
| 508 |
(*_node_order)[it] = -3; |
|
| 509 |
(*_heap_cross_ref)[it] = Heap::PRE_HEAP; |
|
| 510 |
_pred->set(it, INVALID); |
|
| 511 |
} |
|
| 512 |
for (ArcIt it(*_digraph); it != INVALID; ++it) {
|
|
| 513 |
_arborescence->set(it, false); |
|
| 514 |
(*_arc_order)[it] = -1; |
|
| 515 |
} |
|
| 516 |
_dual_node_list.clear(); |
|
| 517 |
_dual_variables.clear(); |
|
| 518 |
} |
|
| 519 |
|
|
| 520 |
/// \brief Adds a new source node. |
|
| 521 |
/// |
|
| 522 |
/// Adds a new source node to the algorithm. |
|
| 523 |
void addSource(Node source) {
|
|
| 524 |
std::vector<Node> nodes; |
|
| 525 |
nodes.push_back(source); |
|
| 526 |
while (!nodes.empty()) {
|
|
| 527 |
Node node = nodes.back(); |
|
| 528 |
nodes.pop_back(); |
|
| 529 |
for (OutArcIt it(*_digraph, node); it != INVALID; ++it) {
|
|
| 530 |
Node target = _digraph->target(it); |
|
| 531 |
if ((*_node_order)[target] == -3) {
|
|
| 532 |
(*_node_order)[target] = -2; |
|
| 533 |
nodes.push_back(target); |
|
| 534 |
queue.push_back(target); |
|
| 535 |
} |
|
| 536 |
} |
|
| 537 |
} |
|
| 538 |
(*_node_order)[source] = -1; |
|
| 539 |
} |
|
| 540 |
|
|
| 541 |
/// \brief Processes the next node in the priority queue. |
|
| 542 |
/// |
|
| 543 |
/// Processes the next node in the priority queue. |
|
| 544 |
/// |
|
| 545 |
/// \return The processed node. |
|
| 546 |
/// |
|
| 547 |
/// \warning The queue must not be empty. |
|
| 548 |
Node processNextNode() {
|
|
| 549 |
Node node = queue.back(); |
|
| 550 |
queue.pop_back(); |
|
| 551 |
if ((*_node_order)[node] == -2) {
|
|
| 552 |
Arc arc = prepare(node); |
|
| 553 |
Node source = _digraph->source(arc); |
|
| 554 |
while ((*_node_order)[source] != -1) {
|
|
| 555 |
if ((*_node_order)[source] >= 0) {
|
|
| 556 |
arc = contract(source); |
|
| 557 |
} else {
|
|
| 558 |
arc = prepare(source); |
|
| 559 |
} |
|
| 560 |
source = _digraph->source(arc); |
|
| 561 |
} |
|
| 562 |
finalize(arc); |
|
| 563 |
level_stack.clear(); |
|
| 564 |
} |
|
| 565 |
return node; |
|
| 566 |
} |
|
| 567 |
|
|
| 568 |
/// \brief Returns the number of the nodes to be processed. |
|
| 569 |
/// |
|
| 570 |
/// Returns the number of the nodes to be processed in the priority |
|
| 571 |
/// queue. |
|
| 572 |
int queueSize() const {
|
|
| 573 |
return queue.size(); |
|
| 574 |
} |
|
| 575 |
|
|
| 576 |
/// \brief Returns \c false if there are nodes to be processed. |
|
| 577 |
/// |
|
| 578 |
/// Returns \c false if there are nodes to be processed. |
|
| 579 |
bool emptyQueue() const {
|
|
| 580 |
return queue.empty(); |
|
| 581 |
} |
|
| 582 |
|
|
| 583 |
/// \brief Executes the algorithm. |
|
| 584 |
/// |
|
| 585 |
/// Executes the algorithm. |
|
| 586 |
/// |
|
| 587 |
/// \pre init() must be called and at least one node should be added |
|
| 588 |
/// with addSource() before using this function. |
|
| 589 |
/// |
|
| 590 |
///\note mca.start() is just a shortcut of the following code. |
|
| 591 |
///\code |
|
| 592 |
///while (!mca.emptyQueue()) {
|
|
| 593 |
/// mca.processNextNode(); |
|
| 594 |
///} |
|
| 595 |
///\endcode |
|
| 596 |
void start() {
|
|
| 597 |
while (!emptyQueue()) {
|
|
| 598 |
processNextNode(); |
|
| 599 |
} |
|
| 600 |
} |
|
| 601 |
|
|
| 602 |
/// \brief Runs %MinCostArborescence algorithm from node \c s. |
|
| 603 |
/// |
|
| 604 |
/// This method runs the %MinCostArborescence algorithm from |
|
| 605 |
/// a root node \c s. |
|
| 606 |
/// |
|
| 607 |
/// \note mca.run(s) is just a shortcut of the following code. |
|
| 608 |
/// \code |
|
| 609 |
/// mca.init(); |
|
| 610 |
/// mca.addSource(s); |
|
| 611 |
/// mca.start(); |
|
| 612 |
/// \endcode |
|
| 613 |
void run(Node s) {
|
|
| 614 |
init(); |
|
| 615 |
addSource(s); |
|
| 616 |
start(); |
|
| 617 |
} |
|
| 618 |
|
|
| 619 |
///@} |
|
| 620 |
|
|
| 621 |
/// \name Query Functions |
|
| 622 |
/// The result of the %MinCostArborescence algorithm can be obtained |
|
| 623 |
/// using these functions.\n |
|
| 624 |
/// Either run() or start() must be called before using them. |
|
| 625 |
|
|
| 626 |
/// @{
|
|
| 627 |
|
|
| 628 |
/// \brief Returns the cost of the arborescence. |
|
| 629 |
/// |
|
| 630 |
/// Returns the cost of the arborescence. |
|
| 631 |
Value arborescenceCost() const {
|
|
| 632 |
Value sum = 0; |
|
| 633 |
for (ArcIt it(*_digraph); it != INVALID; ++it) {
|
|
| 634 |
if (arborescence(it)) {
|
|
| 635 |
sum += (*_cost)[it]; |
|
| 636 |
} |
|
| 637 |
} |
|
| 638 |
return sum; |
|
| 639 |
} |
|
| 640 |
|
|
| 641 |
/// \brief Returns \c true if the arc is in the arborescence. |
|
| 642 |
/// |
|
| 643 |
/// Returns \c true if the given arc is in the arborescence. |
|
| 644 |
/// \param arc An arc of the digraph. |
|
| 645 |
/// \pre \ref run() must be called before using this function. |
|
| 646 |
bool arborescence(Arc arc) const {
|
|
| 647 |
return (*_pred)[_digraph->target(arc)] == arc; |
|
| 648 |
} |
|
| 649 |
|
|
| 650 |
/// \brief Returns a const reference to the arborescence map. |
|
| 651 |
/// |
|
| 652 |
/// Returns a const reference to the arborescence map. |
|
| 653 |
/// \pre \ref run() must be called before using this function. |
|
| 654 |
const ArborescenceMap& arborescenceMap() const {
|
|
| 655 |
return *_arborescence; |
|
| 656 |
} |
|
| 657 |
|
|
| 658 |
/// \brief Returns the predecessor arc of the given node. |
|
| 659 |
/// |
|
| 660 |
/// Returns the predecessor arc of the given node. |
|
| 661 |
/// \pre \ref run() must be called before using this function. |
|
| 662 |
Arc pred(Node node) const {
|
|
| 663 |
return (*_pred)[node]; |
|
| 664 |
} |
|
| 665 |
|
|
| 666 |
/// \brief Returns a const reference to the pred map. |
|
| 667 |
/// |
|
| 668 |
/// Returns a const reference to the pred map. |
|
| 669 |
/// \pre \ref run() must be called before using this function. |
|
| 670 |
const PredMap& predMap() const {
|
|
| 671 |
return *_pred; |
|
| 672 |
} |
|
| 673 |
|
|
| 674 |
/// \brief Indicates that a node is reachable from the sources. |
|
| 675 |
/// |
|
| 676 |
/// Indicates that a node is reachable from the sources. |
|
| 677 |
bool reached(Node node) const {
|
|
| 678 |
return (*_node_order)[node] != -3; |
|
| 679 |
} |
|
| 680 |
|
|
| 681 |
/// \brief Indicates that a node is processed. |
|
| 682 |
/// |
|
| 683 |
/// Indicates that a node is processed. The arborescence path exists |
|
| 684 |
/// from the source to the given node. |
|
| 685 |
bool processed(Node node) const {
|
|
| 686 |
return (*_node_order)[node] == -1; |
|
| 687 |
} |
|
| 688 |
|
|
| 689 |
/// \brief Returns the number of the dual variables in basis. |
|
| 690 |
/// |
|
| 691 |
/// Returns the number of the dual variables in basis. |
|
| 692 |
int dualNum() const {
|
|
| 693 |
return _dual_variables.size(); |
|
| 694 |
} |
|
| 695 |
|
|
| 696 |
/// \brief Returns the value of the dual solution. |
|
| 697 |
/// |
|
| 698 |
/// Returns the value of the dual solution. It should be |
|
| 699 |
/// equal to the arborescence value. |
|
| 700 |
Value dualValue() const {
|
|
| 701 |
Value sum = 0; |
|
| 702 |
for (int i = 0; i < int(_dual_variables.size()); ++i) {
|
|
| 703 |
sum += _dual_variables[i].value; |
|
| 704 |
} |
|
| 705 |
return sum; |
|
| 706 |
} |
|
| 707 |
|
|
| 708 |
/// \brief Returns the number of the nodes in the dual variable. |
|
| 709 |
/// |
|
| 710 |
/// Returns the number of the nodes in the dual variable. |
|
| 711 |
int dualSize(int k) const {
|
|
| 712 |
return _dual_variables[k].end - _dual_variables[k].begin; |
|
| 713 |
} |
|
| 714 |
|
|
| 715 |
/// \brief Returns the value of the dual variable. |
|
| 716 |
/// |
|
| 717 |
/// Returns the the value of the dual variable. |
|
| 718 |
Value dualValue(int k) const {
|
|
| 719 |
return _dual_variables[k].value; |
|
| 720 |
} |
|
| 721 |
|
|
| 722 |
/// \brief LEMON iterator for getting a dual variable. |
|
| 723 |
/// |
|
| 724 |
/// This class provides a common style LEMON iterator for getting a |
|
| 725 |
/// dual variable of \ref MinCostArborescence algorithm. |
|
| 726 |
/// It iterates over a subset of the nodes. |
|
| 727 |
class DualIt {
|
|
| 728 |
public: |
|
| 729 |
|
|
| 730 |
/// \brief Constructor. |
|
| 731 |
/// |
|
| 732 |
/// Constructor for getting the nodeset of the dual variable |
|
| 733 |
/// of \ref MinCostArborescence algorithm. |
|
| 734 |
DualIt(const MinCostArborescence& algorithm, int variable) |
|
| 735 |
: _algorithm(&algorithm) |
|
| 736 |
{
|
|
| 737 |
_index = _algorithm->_dual_variables[variable].begin; |
|
| 738 |
_last = _algorithm->_dual_variables[variable].end; |
|
| 739 |
} |
|
| 740 |
|
|
| 741 |
/// \brief Conversion to \c Node. |
|
| 742 |
/// |
|
| 743 |
/// Conversion to \c Node. |
|
| 744 |
operator Node() const {
|
|
| 745 |
return _algorithm->_dual_node_list[_index]; |
|
| 746 |
} |
|
| 747 |
|
|
| 748 |
/// \brief Increment operator. |
|
| 749 |
/// |
|
| 750 |
/// Increment operator. |
|
| 751 |
DualIt& operator++() {
|
|
| 752 |
++_index; |
|
| 753 |
return *this; |
|
| 754 |
} |
|
| 755 |
|
|
| 756 |
/// \brief Validity checking |
|
| 757 |
/// |
|
| 758 |
/// Checks whether the iterator is invalid. |
|
| 759 |
bool operator==(Invalid) const {
|
|
| 760 |
return _index == _last; |
|
| 761 |
} |
|
| 762 |
|
|
| 763 |
/// \brief Validity checking |
|
| 764 |
/// |
|
| 765 |
/// Checks whether the iterator is valid. |
|
| 766 |
bool operator!=(Invalid) const {
|
|
| 767 |
return _index != _last; |
|
| 768 |
} |
|
| 769 |
|
|
| 770 |
private: |
|
| 771 |
const MinCostArborescence* _algorithm; |
|
| 772 |
int _index, _last; |
|
| 773 |
}; |
|
| 774 |
|
|
| 775 |
/// @} |
|
| 776 |
|
|
| 777 |
}; |
|
| 778 |
|
|
| 779 |
/// \ingroup spantree |
|
| 780 |
/// |
|
| 781 |
/// \brief Function type interface for MinCostArborescence algorithm. |
|
| 782 |
/// |
|
| 783 |
/// Function type interface for MinCostArborescence algorithm. |
|
| 784 |
/// \param digraph The digraph the algorithm runs on. |
|
| 785 |
/// \param cost An arc map storing the costs. |
|
| 786 |
/// \param source The source node of the arborescence. |
|
| 787 |
/// \retval arborescence An arc map with \c bool (or convertible) value |
|
| 788 |
/// type that stores the arborescence. |
|
| 789 |
/// \return The total cost of the arborescence. |
|
| 790 |
/// |
|
| 791 |
/// \sa MinCostArborescence |
|
| 792 |
template <typename Digraph, typename CostMap, typename ArborescenceMap> |
|
| 793 |
typename CostMap::Value minCostArborescence(const Digraph& digraph, |
|
| 794 |
const CostMap& cost, |
|
| 795 |
typename Digraph::Node source, |
|
| 796 |
ArborescenceMap& arborescence) {
|
|
| 797 |
typename MinCostArborescence<Digraph, CostMap> |
|
| 798 |
::template SetArborescenceMap<ArborescenceMap> |
|
| 799 |
::Create mca(digraph, cost); |
|
| 800 |
mca.arborescenceMap(arborescence); |
|
| 801 |
mca.run(source); |
|
| 802 |
return mca.arborescenceCost(); |
|
| 803 |
} |
|
| 804 |
|
|
| 805 |
} |
|
| 806 |
|
|
| 807 |
#endif |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_NETWORK_SIMPLEX_H |
|
| 20 |
#define LEMON_NETWORK_SIMPLEX_H |
|
| 21 |
|
|
| 22 |
/// \ingroup min_cost_flow_algs |
|
| 23 |
/// |
|
| 24 |
/// \file |
|
| 25 |
/// \brief Network Simplex algorithm for finding a minimum cost flow. |
|
| 26 |
|
|
| 27 |
#include <vector> |
|
| 28 |
#include <limits> |
|
| 29 |
#include <algorithm> |
|
| 30 |
|
|
| 31 |
#include <lemon/core.h> |
|
| 32 |
#include <lemon/math.h> |
|
| 33 |
|
|
| 34 |
namespace lemon {
|
|
| 35 |
|
|
| 36 |
/// \addtogroup min_cost_flow_algs |
|
| 37 |
/// @{
|
|
| 38 |
|
|
| 39 |
/// \brief Implementation of the primal Network Simplex algorithm |
|
| 40 |
/// for finding a \ref min_cost_flow "minimum cost flow". |
|
| 41 |
/// |
|
| 42 |
/// \ref NetworkSimplex implements the primal Network Simplex algorithm |
|
| 43 |
/// for finding a \ref min_cost_flow "minimum cost flow" |
|
| 44 |
/// \ref amo93networkflows, \ref dantzig63linearprog, |
|
| 45 |
/// \ref kellyoneill91netsimplex. |
|
| 46 |
/// This algorithm is a specialized version of the linear programming |
|
| 47 |
/// simplex method directly for the minimum cost flow problem. |
|
| 48 |
/// It is one of the most efficient solution methods. |
|
| 49 |
/// |
|
| 50 |
/// In general this class is the fastest implementation available |
|
| 51 |
/// in LEMON for the minimum cost flow problem. |
|
| 52 |
/// Moreover it supports both directions of the supply/demand inequality |
|
| 53 |
/// constraints. For more information see \ref SupplyType. |
|
| 54 |
/// |
|
| 55 |
/// Most of the parameters of the problem (except for the digraph) |
|
| 56 |
/// can be given using separate functions, and the algorithm can be |
|
| 57 |
/// executed using the \ref run() function. If some parameters are not |
|
| 58 |
/// specified, then default values will be used. |
|
| 59 |
/// |
|
| 60 |
/// \tparam GR The digraph type the algorithm runs on. |
|
| 61 |
/// \tparam V The value type used for flow amounts, capacity bounds |
|
| 62 |
/// and supply values in the algorithm. By default it is \c int. |
|
| 63 |
/// \tparam C The value type used for costs and potentials in the |
|
| 64 |
/// algorithm. By default it is the same as \c V. |
|
| 65 |
/// |
|
| 66 |
/// \warning Both value types must be signed and all input data must |
|
| 67 |
/// be integer. |
|
| 68 |
/// |
|
| 69 |
/// \note %NetworkSimplex provides five different pivot rule |
|
| 70 |
/// implementations, from which the most efficient one is used |
|
| 71 |
/// by default. For more information see \ref PivotRule. |
|
| 72 |
template <typename GR, typename V = int, typename C = V> |
|
| 73 |
class NetworkSimplex |
|
| 74 |
{
|
|
| 75 |
public: |
|
| 76 |
|
|
| 77 |
/// The type of the flow amounts, capacity bounds and supply values |
|
| 78 |
typedef V Value; |
|
| 79 |
/// The type of the arc costs |
|
| 80 |
typedef C Cost; |
|
| 81 |
|
|
| 82 |
public: |
|
| 83 |
|
|
| 84 |
/// \brief Problem type constants for the \c run() function. |
|
| 85 |
/// |
|
| 86 |
/// Enum type containing the problem type constants that can be |
|
| 87 |
/// returned by the \ref run() function of the algorithm. |
|
| 88 |
enum ProblemType {
|
|
| 89 |
/// The problem has no feasible solution (flow). |
|
| 90 |
INFEASIBLE, |
|
| 91 |
/// The problem has optimal solution (i.e. it is feasible and |
|
| 92 |
/// bounded), and the algorithm has found optimal flow and node |
|
| 93 |
/// potentials (primal and dual solutions). |
|
| 94 |
OPTIMAL, |
|
| 95 |
/// The objective function of the problem is unbounded, i.e. |
|
| 96 |
/// there is a directed cycle having negative total cost and |
|
| 97 |
/// infinite upper bound. |
|
| 98 |
UNBOUNDED |
|
| 99 |
}; |
|
| 100 |
|
|
| 101 |
/// \brief Constants for selecting the type of the supply constraints. |
|
| 102 |
/// |
|
| 103 |
/// Enum type containing constants for selecting the supply type, |
|
| 104 |
/// i.e. the direction of the inequalities in the supply/demand |
|
| 105 |
/// constraints of the \ref min_cost_flow "minimum cost flow problem". |
|
| 106 |
/// |
|
| 107 |
/// The default supply type is \c GEQ, the \c LEQ type can be |
|
| 108 |
/// selected using \ref supplyType(). |
|
| 109 |
/// The equality form is a special case of both supply types. |
|
| 110 |
enum SupplyType {
|
|
| 111 |
/// This option means that there are <em>"greater or equal"</em> |
|
| 112 |
/// supply/demand constraints in the definition of the problem. |
|
| 113 |
GEQ, |
|
| 114 |
/// This option means that there are <em>"less or equal"</em> |
|
| 115 |
/// supply/demand constraints in the definition of the problem. |
|
| 116 |
LEQ |
|
| 117 |
}; |
|
| 118 |
|
|
| 119 |
/// \brief Constants for selecting the pivot rule. |
|
| 120 |
/// |
|
| 121 |
/// Enum type containing constants for selecting the pivot rule for |
|
| 122 |
/// the \ref run() function. |
|
| 123 |
/// |
|
| 124 |
/// \ref NetworkSimplex provides five different pivot rule |
|
| 125 |
/// implementations that significantly affect the running time |
|
| 126 |
/// of the algorithm. |
|
| 127 |
/// By default \ref BLOCK_SEARCH "Block Search" is used, which |
|
| 128 |
/// proved to be the most efficient and the most robust on various |
|
| 129 |
/// test inputs according to our benchmark tests. |
|
| 130 |
/// However another pivot rule can be selected using the \ref run() |
|
| 131 |
/// function with the proper parameter. |
|
| 132 |
enum PivotRule {
|
|
| 133 |
|
|
| 134 |
/// The First Eligible pivot rule. |
|
| 135 |
/// The next eligible arc is selected in a wraparound fashion |
|
| 136 |
/// in every iteration. |
|
| 137 |
FIRST_ELIGIBLE, |
|
| 138 |
|
|
| 139 |
/// The Best Eligible pivot rule. |
|
| 140 |
/// The best eligible arc is selected in every iteration. |
|
| 141 |
BEST_ELIGIBLE, |
|
| 142 |
|
|
| 143 |
/// The Block Search pivot rule. |
|
| 144 |
/// A specified number of arcs are examined in every iteration |
|
| 145 |
/// in a wraparound fashion and the best eligible arc is selected |
|
| 146 |
/// from this block. |
|
| 147 |
BLOCK_SEARCH, |
|
| 148 |
|
|
| 149 |
/// The Candidate List pivot rule. |
|
| 150 |
/// In a major iteration a candidate list is built from eligible arcs |
|
| 151 |
/// in a wraparound fashion and in the following minor iterations |
|
| 152 |
/// the best eligible arc is selected from this list. |
|
| 153 |
CANDIDATE_LIST, |
|
| 154 |
|
|
| 155 |
/// The Altering Candidate List pivot rule. |
|
| 156 |
/// It is a modified version of the Candidate List method. |
|
| 157 |
/// It keeps only the several best eligible arcs from the former |
|
| 158 |
/// candidate list and extends this list in every iteration. |
|
| 159 |
ALTERING_LIST |
|
| 160 |
}; |
|
| 161 |
|
|
| 162 |
private: |
|
| 163 |
|
|
| 164 |
TEMPLATE_DIGRAPH_TYPEDEFS(GR); |
|
| 165 |
|
|
| 166 |
typedef std::vector<int> IntVector; |
|
| 167 |
typedef std::vector<bool> BoolVector; |
|
| 168 |
typedef std::vector<Value> ValueVector; |
|
| 169 |
typedef std::vector<Cost> CostVector; |
|
| 170 |
|
|
| 171 |
// State constants for arcs |
|
| 172 |
enum ArcStateEnum {
|
|
| 173 |
STATE_UPPER = -1, |
|
| 174 |
STATE_TREE = 0, |
|
| 175 |
STATE_LOWER = 1 |
|
| 176 |
}; |
|
| 177 |
|
|
| 178 |
private: |
|
| 179 |
|
|
| 180 |
// Data related to the underlying digraph |
|
| 181 |
const GR &_graph; |
|
| 182 |
int _node_num; |
|
| 183 |
int _arc_num; |
|
| 184 |
int _all_arc_num; |
|
| 185 |
int _search_arc_num; |
|
| 186 |
|
|
| 187 |
// Parameters of the problem |
|
| 188 |
bool _have_lower; |
|
| 189 |
SupplyType _stype; |
|
| 190 |
Value _sum_supply; |
|
| 191 |
|
|
| 192 |
// Data structures for storing the digraph |
|
| 193 |
IntNodeMap _node_id; |
|
| 194 |
IntArcMap _arc_id; |
|
| 195 |
IntVector _source; |
|
| 196 |
IntVector _target; |
|
| 197 |
|
|
| 198 |
// Node and arc data |
|
| 199 |
ValueVector _lower; |
|
| 200 |
ValueVector _upper; |
|
| 201 |
ValueVector _cap; |
|
| 202 |
CostVector _cost; |
|
| 203 |
ValueVector _supply; |
|
| 204 |
ValueVector _flow; |
|
| 205 |
CostVector _pi; |
|
| 206 |
|
|
| 207 |
// Data for storing the spanning tree structure |
|
| 208 |
IntVector _parent; |
|
| 209 |
IntVector _pred; |
|
| 210 |
IntVector _thread; |
|
| 211 |
IntVector _rev_thread; |
|
| 212 |
IntVector _succ_num; |
|
| 213 |
IntVector _last_succ; |
|
| 214 |
IntVector _dirty_revs; |
|
| 215 |
BoolVector _forward; |
|
| 216 |
IntVector _state; |
|
| 217 |
int _root; |
|
| 218 |
|
|
| 219 |
// Temporary data used in the current pivot iteration |
|
| 220 |
int in_arc, join, u_in, v_in, u_out, v_out; |
|
| 221 |
int first, second, right, last; |
|
| 222 |
int stem, par_stem, new_stem; |
|
| 223 |
Value delta; |
|
| 224 |
|
|
| 225 |
public: |
|
| 226 |
|
|
| 227 |
/// \brief Constant for infinite upper bounds (capacities). |
|
| 228 |
/// |
|
| 229 |
/// Constant for infinite upper bounds (capacities). |
|
| 230 |
/// It is \c std::numeric_limits<Value>::infinity() if available, |
|
| 231 |
/// \c std::numeric_limits<Value>::max() otherwise. |
|
| 232 |
const Value INF; |
|
| 233 |
|
|
| 234 |
private: |
|
| 235 |
|
|
| 236 |
// Implementation of the First Eligible pivot rule |
|
| 237 |
class FirstEligiblePivotRule |
|
| 238 |
{
|
|
| 239 |
private: |
|
| 240 |
|
|
| 241 |
// References to the NetworkSimplex class |
|
| 242 |
const IntVector &_source; |
|
| 243 |
const IntVector &_target; |
|
| 244 |
const CostVector &_cost; |
|
| 245 |
const IntVector &_state; |
|
| 246 |
const CostVector &_pi; |
|
| 247 |
int &_in_arc; |
|
| 248 |
int _search_arc_num; |
|
| 249 |
|
|
| 250 |
// Pivot rule data |
|
| 251 |
int _next_arc; |
|
| 252 |
|
|
| 253 |
public: |
|
| 254 |
|
|
| 255 |
// Constructor |
|
| 256 |
FirstEligiblePivotRule(NetworkSimplex &ns) : |
|
| 257 |
_source(ns._source), _target(ns._target), |
|
| 258 |
_cost(ns._cost), _state(ns._state), _pi(ns._pi), |
|
| 259 |
_in_arc(ns.in_arc), _search_arc_num(ns._search_arc_num), |
|
| 260 |
_next_arc(0) |
|
| 261 |
{}
|
|
| 262 |
|
|
| 263 |
// Find next entering arc |
|
| 264 |
bool findEnteringArc() {
|
|
| 265 |
Cost c; |
|
| 266 |
for (int e = _next_arc; e < _search_arc_num; ++e) {
|
|
| 267 |
c = _state[e] * (_cost[e] + _pi[_source[e]] - _pi[_target[e]]); |
|
| 268 |
if (c < 0) {
|
|
| 269 |
_in_arc = e; |
|
| 270 |
_next_arc = e + 1; |
|
| 271 |
return true; |
|
| 272 |
} |
|
| 273 |
} |
|
| 274 |
for (int e = 0; e < _next_arc; ++e) {
|
|
| 275 |
c = _state[e] * (_cost[e] + _pi[_source[e]] - _pi[_target[e]]); |
|
| 276 |
if (c < 0) {
|
|
| 277 |
_in_arc = e; |
|
| 278 |
_next_arc = e + 1; |
|
| 279 |
return true; |
|
| 280 |
} |
|
| 281 |
} |
|
| 282 |
return false; |
|
| 283 |
} |
|
| 284 |
|
|
| 285 |
}; //class FirstEligiblePivotRule |
|
| 286 |
|
|
| 287 |
|
|
| 288 |
// Implementation of the Best Eligible pivot rule |
|
| 289 |
class BestEligiblePivotRule |
|
| 290 |
{
|
|
| 291 |
private: |
|
| 292 |
|
|
| 293 |
// References to the NetworkSimplex class |
|
| 294 |
const IntVector &_source; |
|
| 295 |
const IntVector &_target; |
|
| 296 |
const CostVector &_cost; |
|
| 297 |
const IntVector &_state; |
|
| 298 |
const CostVector &_pi; |
|
| 299 |
int &_in_arc; |
|
| 300 |
int _search_arc_num; |
|
| 301 |
|
|
| 302 |
public: |
|
| 303 |
|
|
| 304 |
// Constructor |
|
| 305 |
BestEligiblePivotRule(NetworkSimplex &ns) : |
|
| 306 |
_source(ns._source), _target(ns._target), |
|
| 307 |
_cost(ns._cost), _state(ns._state), _pi(ns._pi), |
|
| 308 |
_in_arc(ns.in_arc), _search_arc_num(ns._search_arc_num) |
|
| 309 |
{}
|
|
| 310 |
|
|
| 311 |
// Find next entering arc |
|
| 312 |
bool findEnteringArc() {
|
|
| 313 |
Cost c, min = 0; |
|
| 314 |
for (int e = 0; e < _search_arc_num; ++e) {
|
|
| 315 |
c = _state[e] * (_cost[e] + _pi[_source[e]] - _pi[_target[e]]); |
|
| 316 |
if (c < min) {
|
|
| 317 |
min = c; |
|
| 318 |
_in_arc = e; |
|
| 319 |
} |
|
| 320 |
} |
|
| 321 |
return min < 0; |
|
| 322 |
} |
|
| 323 |
|
|
| 324 |
}; //class BestEligiblePivotRule |
|
| 325 |
|
|
| 326 |
|
|
| 327 |
// Implementation of the Block Search pivot rule |
|
| 328 |
class BlockSearchPivotRule |
|
| 329 |
{
|
|
| 330 |
private: |
|
| 331 |
|
|
| 332 |
// References to the NetworkSimplex class |
|
| 333 |
const IntVector &_source; |
|
| 334 |
const IntVector &_target; |
|
| 335 |
const CostVector &_cost; |
|
| 336 |
const IntVector &_state; |
|
| 337 |
const CostVector &_pi; |
|
| 338 |
int &_in_arc; |
|
| 339 |
int _search_arc_num; |
|
| 340 |
|
|
| 341 |
// Pivot rule data |
|
| 342 |
int _block_size; |
|
| 343 |
int _next_arc; |
|
| 344 |
|
|
| 345 |
public: |
|
| 346 |
|
|
| 347 |
// Constructor |
|
| 348 |
BlockSearchPivotRule(NetworkSimplex &ns) : |
|
| 349 |
_source(ns._source), _target(ns._target), |
|
| 350 |
_cost(ns._cost), _state(ns._state), _pi(ns._pi), |
|
| 351 |
_in_arc(ns.in_arc), _search_arc_num(ns._search_arc_num), |
|
| 352 |
_next_arc(0) |
|
| 353 |
{
|
|
| 354 |
// The main parameters of the pivot rule |
|
| 355 |
const double BLOCK_SIZE_FACTOR = 0.5; |
|
| 356 |
const int MIN_BLOCK_SIZE = 10; |
|
| 357 |
|
|
| 358 |
_block_size = std::max( int(BLOCK_SIZE_FACTOR * |
|
| 359 |
std::sqrt(double(_search_arc_num))), |
|
| 360 |
MIN_BLOCK_SIZE ); |
|
| 361 |
} |
|
| 362 |
|
|
| 363 |
// Find next entering arc |
|
| 364 |
bool findEnteringArc() {
|
|
| 365 |
Cost c, min = 0; |
|
| 366 |
int cnt = _block_size; |
|
| 367 |
int e; |
|
| 368 |
for (e = _next_arc; e < _search_arc_num; ++e) {
|
|
| 369 |
c = _state[e] * (_cost[e] + _pi[_source[e]] - _pi[_target[e]]); |
|
| 370 |
if (c < min) {
|
|
| 371 |
min = c; |
|
| 372 |
_in_arc = e; |
|
| 373 |
} |
|
| 374 |
if (--cnt == 0) {
|
|
| 375 |
if (min < 0) goto search_end; |
|
| 376 |
cnt = _block_size; |
|
| 377 |
} |
|
| 378 |
} |
|
| 379 |
for (e = 0; e < _next_arc; ++e) {
|
|
| 380 |
c = _state[e] * (_cost[e] + _pi[_source[e]] - _pi[_target[e]]); |
|
| 381 |
if (c < min) {
|
|
| 382 |
min = c; |
|
| 383 |
_in_arc = e; |
|
| 384 |
} |
|
| 385 |
if (--cnt == 0) {
|
|
| 386 |
if (min < 0) goto search_end; |
|
| 387 |
cnt = _block_size; |
|
| 388 |
} |
|
| 389 |
} |
|
| 390 |
if (min >= 0) return false; |
|
| 391 |
|
|
| 392 |
search_end: |
|
| 393 |
_next_arc = e; |
|
| 394 |
return true; |
|
| 395 |
} |
|
| 396 |
|
|
| 397 |
}; //class BlockSearchPivotRule |
|
| 398 |
|
|
| 399 |
|
|
| 400 |
// Implementation of the Candidate List pivot rule |
|
| 401 |
class CandidateListPivotRule |
|
| 402 |
{
|
|
| 403 |
private: |
|
| 404 |
|
|
| 405 |
// References to the NetworkSimplex class |
|
| 406 |
const IntVector &_source; |
|
| 407 |
const IntVector &_target; |
|
| 408 |
const CostVector &_cost; |
|
| 409 |
const IntVector &_state; |
|
| 410 |
const CostVector &_pi; |
|
| 411 |
int &_in_arc; |
|
| 412 |
int _search_arc_num; |
|
| 413 |
|
|
| 414 |
// Pivot rule data |
|
| 415 |
IntVector _candidates; |
|
| 416 |
int _list_length, _minor_limit; |
|
| 417 |
int _curr_length, _minor_count; |
|
| 418 |
int _next_arc; |
|
| 419 |
|
|
| 420 |
public: |
|
| 421 |
|
|
| 422 |
/// Constructor |
|
| 423 |
CandidateListPivotRule(NetworkSimplex &ns) : |
|
| 424 |
_source(ns._source), _target(ns._target), |
|
| 425 |
_cost(ns._cost), _state(ns._state), _pi(ns._pi), |
|
| 426 |
_in_arc(ns.in_arc), _search_arc_num(ns._search_arc_num), |
|
| 427 |
_next_arc(0) |
|
| 428 |
{
|
|
| 429 |
// The main parameters of the pivot rule |
|
| 430 |
const double LIST_LENGTH_FACTOR = 0.25; |
|
| 431 |
const int MIN_LIST_LENGTH = 10; |
|
| 432 |
const double MINOR_LIMIT_FACTOR = 0.1; |
|
| 433 |
const int MIN_MINOR_LIMIT = 3; |
|
| 434 |
|
|
| 435 |
_list_length = std::max( int(LIST_LENGTH_FACTOR * |
|
| 436 |
std::sqrt(double(_search_arc_num))), |
|
| 437 |
MIN_LIST_LENGTH ); |
|
| 438 |
_minor_limit = std::max( int(MINOR_LIMIT_FACTOR * _list_length), |
|
| 439 |
MIN_MINOR_LIMIT ); |
|
| 440 |
_curr_length = _minor_count = 0; |
|
| 441 |
_candidates.resize(_list_length); |
|
| 442 |
} |
|
| 443 |
|
|
| 444 |
/// Find next entering arc |
|
| 445 |
bool findEnteringArc() {
|
|
| 446 |
Cost min, c; |
|
| 447 |
int e; |
|
| 448 |
if (_curr_length > 0 && _minor_count < _minor_limit) {
|
|
| 449 |
// Minor iteration: select the best eligible arc from the |
|
| 450 |
// current candidate list |
|
| 451 |
++_minor_count; |
|
| 452 |
min = 0; |
|
| 453 |
for (int i = 0; i < _curr_length; ++i) {
|
|
| 454 |
e = _candidates[i]; |
|
| 455 |
c = _state[e] * (_cost[e] + _pi[_source[e]] - _pi[_target[e]]); |
|
| 456 |
if (c < min) {
|
|
| 457 |
min = c; |
|
| 458 |
_in_arc = e; |
|
| 459 |
} |
|
| 460 |
else if (c >= 0) {
|
|
| 461 |
_candidates[i--] = _candidates[--_curr_length]; |
|
| 462 |
} |
|
| 463 |
} |
|
| 464 |
if (min < 0) return true; |
|
| 465 |
} |
|
| 466 |
|
|
| 467 |
// Major iteration: build a new candidate list |
|
| 468 |
min = 0; |
|
| 469 |
_curr_length = 0; |
|
| 470 |
for (e = _next_arc; e < _search_arc_num; ++e) {
|
|
| 471 |
c = _state[e] * (_cost[e] + _pi[_source[e]] - _pi[_target[e]]); |
|
| 472 |
if (c < 0) {
|
|
| 473 |
_candidates[_curr_length++] = e; |
|
| 474 |
if (c < min) {
|
|
| 475 |
min = c; |
|
| 476 |
_in_arc = e; |
|
| 477 |
} |
|
| 478 |
if (_curr_length == _list_length) goto search_end; |
|
| 479 |
} |
|
| 480 |
} |
|
| 481 |
for (e = 0; e < _next_arc; ++e) {
|
|
| 482 |
c = _state[e] * (_cost[e] + _pi[_source[e]] - _pi[_target[e]]); |
|
| 483 |
if (c < 0) {
|
|
| 484 |
_candidates[_curr_length++] = e; |
|
| 485 |
if (c < min) {
|
|
| 486 |
min = c; |
|
| 487 |
_in_arc = e; |
|
| 488 |
} |
|
| 489 |
if (_curr_length == _list_length) goto search_end; |
|
| 490 |
} |
|
| 491 |
} |
|
| 492 |
if (_curr_length == 0) return false; |
|
| 493 |
|
|
| 494 |
search_end: |
|
| 495 |
_minor_count = 1; |
|
| 496 |
_next_arc = e; |
|
| 497 |
return true; |
|
| 498 |
} |
|
| 499 |
|
|
| 500 |
}; //class CandidateListPivotRule |
|
| 501 |
|
|
| 502 |
|
|
| 503 |
// Implementation of the Altering Candidate List pivot rule |
|
| 504 |
class AlteringListPivotRule |
|
| 505 |
{
|
|
| 506 |
private: |
|
| 507 |
|
|
| 508 |
// References to the NetworkSimplex class |
|
| 509 |
const IntVector &_source; |
|
| 510 |
const IntVector &_target; |
|
| 511 |
const CostVector &_cost; |
|
| 512 |
const IntVector &_state; |
|
| 513 |
const CostVector &_pi; |
|
| 514 |
int &_in_arc; |
|
| 515 |
int _search_arc_num; |
|
| 516 |
|
|
| 517 |
// Pivot rule data |
|
| 518 |
int _block_size, _head_length, _curr_length; |
|
| 519 |
int _next_arc; |
|
| 520 |
IntVector _candidates; |
|
| 521 |
CostVector _cand_cost; |
|
| 522 |
|
|
| 523 |
// Functor class to compare arcs during sort of the candidate list |
|
| 524 |
class SortFunc |
|
| 525 |
{
|
|
| 526 |
private: |
|
| 527 |
const CostVector &_map; |
|
| 528 |
public: |
|
| 529 |
SortFunc(const CostVector &map) : _map(map) {}
|
|
| 530 |
bool operator()(int left, int right) {
|
|
| 531 |
return _map[left] > _map[right]; |
|
| 532 |
} |
|
| 533 |
}; |
|
| 534 |
|
|
| 535 |
SortFunc _sort_func; |
|
| 536 |
|
|
| 537 |
public: |
|
| 538 |
|
|
| 539 |
// Constructor |
|
| 540 |
AlteringListPivotRule(NetworkSimplex &ns) : |
|
| 541 |
_source(ns._source), _target(ns._target), |
|
| 542 |
_cost(ns._cost), _state(ns._state), _pi(ns._pi), |
|
| 543 |
_in_arc(ns.in_arc), _search_arc_num(ns._search_arc_num), |
|
| 544 |
_next_arc(0), _cand_cost(ns._search_arc_num), _sort_func(_cand_cost) |
|
| 545 |
{
|
|
| 546 |
// The main parameters of the pivot rule |
|
| 547 |
const double BLOCK_SIZE_FACTOR = 1.0; |
|
| 548 |
const int MIN_BLOCK_SIZE = 10; |
|
| 549 |
const double HEAD_LENGTH_FACTOR = 0.1; |
|
| 550 |
const int MIN_HEAD_LENGTH = 3; |
|
| 551 |
|
|
| 552 |
_block_size = std::max( int(BLOCK_SIZE_FACTOR * |
|
| 553 |
std::sqrt(double(_search_arc_num))), |
|
| 554 |
MIN_BLOCK_SIZE ); |
|
| 555 |
_head_length = std::max( int(HEAD_LENGTH_FACTOR * _block_size), |
|
| 556 |
MIN_HEAD_LENGTH ); |
|
| 557 |
_candidates.resize(_head_length + _block_size); |
|
| 558 |
_curr_length = 0; |
|
| 559 |
} |
|
| 560 |
|
|
| 561 |
// Find next entering arc |
|
| 562 |
bool findEnteringArc() {
|
|
| 563 |
// Check the current candidate list |
|
| 564 |
int e; |
|
| 565 |
for (int i = 0; i < _curr_length; ++i) {
|
|
| 566 |
e = _candidates[i]; |
|
| 567 |
_cand_cost[e] = _state[e] * |
|
| 568 |
(_cost[e] + _pi[_source[e]] - _pi[_target[e]]); |
|
| 569 |
if (_cand_cost[e] >= 0) {
|
|
| 570 |
_candidates[i--] = _candidates[--_curr_length]; |
|
| 571 |
} |
|
| 572 |
} |
|
| 573 |
|
|
| 574 |
// Extend the list |
|
| 575 |
int cnt = _block_size; |
|
| 576 |
int limit = _head_length; |
|
| 577 |
|
|
| 578 |
for (e = _next_arc; e < _search_arc_num; ++e) {
|
|
| 579 |
_cand_cost[e] = _state[e] * |
|
| 580 |
(_cost[e] + _pi[_source[e]] - _pi[_target[e]]); |
|
| 581 |
if (_cand_cost[e] < 0) {
|
|
| 582 |
_candidates[_curr_length++] = e; |
|
| 583 |
} |
|
| 584 |
if (--cnt == 0) {
|
|
| 585 |
if (_curr_length > limit) goto search_end; |
|
| 586 |
limit = 0; |
|
| 587 |
cnt = _block_size; |
|
| 588 |
} |
|
| 589 |
} |
|
| 590 |
for (e = 0; e < _next_arc; ++e) {
|
|
| 591 |
_cand_cost[e] = _state[e] * |
|
| 592 |
(_cost[e] + _pi[_source[e]] - _pi[_target[e]]); |
|
| 593 |
if (_cand_cost[e] < 0) {
|
|
| 594 |
_candidates[_curr_length++] = e; |
|
| 595 |
} |
|
| 596 |
if (--cnt == 0) {
|
|
| 597 |
if (_curr_length > limit) goto search_end; |
|
| 598 |
limit = 0; |
|
| 599 |
cnt = _block_size; |
|
| 600 |
} |
|
| 601 |
} |
|
| 602 |
if (_curr_length == 0) return false; |
|
| 603 |
|
|
| 604 |
search_end: |
|
| 605 |
|
|
| 606 |
// Make heap of the candidate list (approximating a partial sort) |
|
| 607 |
make_heap( _candidates.begin(), _candidates.begin() + _curr_length, |
|
| 608 |
_sort_func ); |
|
| 609 |
|
|
| 610 |
// Pop the first element of the heap |
|
| 611 |
_in_arc = _candidates[0]; |
|
| 612 |
_next_arc = e; |
|
| 613 |
pop_heap( _candidates.begin(), _candidates.begin() + _curr_length, |
|
| 614 |
_sort_func ); |
|
| 615 |
_curr_length = std::min(_head_length, _curr_length - 1); |
|
| 616 |
return true; |
|
| 617 |
} |
|
| 618 |
|
|
| 619 |
}; //class AlteringListPivotRule |
|
| 620 |
|
|
| 621 |
public: |
|
| 622 |
|
|
| 623 |
/// \brief Constructor. |
|
| 624 |
/// |
|
| 625 |
/// The constructor of the class. |
|
| 626 |
/// |
|
| 627 |
/// \param graph The digraph the algorithm runs on. |
|
| 628 |
/// \param arc_mixing Indicate if the arcs have to be stored in a |
|
| 629 |
/// mixed order in the internal data structure. |
|
| 630 |
/// In special cases, it could lead to better overall performance, |
|
| 631 |
/// but it is usually slower. Therefore it is disabled by default. |
|
| 632 |
NetworkSimplex(const GR& graph, bool arc_mixing = false) : |
|
| 633 |
_graph(graph), _node_id(graph), _arc_id(graph), |
|
| 634 |
INF(std::numeric_limits<Value>::has_infinity ? |
|
| 635 |
std::numeric_limits<Value>::infinity() : |
|
| 636 |
std::numeric_limits<Value>::max()) |
|
| 637 |
{
|
|
| 638 |
// Check the value types |
|
| 639 |
LEMON_ASSERT(std::numeric_limits<Value>::is_signed, |
|
| 640 |
"The flow type of NetworkSimplex must be signed"); |
|
| 641 |
LEMON_ASSERT(std::numeric_limits<Cost>::is_signed, |
|
| 642 |
"The cost type of NetworkSimplex must be signed"); |
|
| 643 |
|
|
| 644 |
// Resize vectors |
|
| 645 |
_node_num = countNodes(_graph); |
|
| 646 |
_arc_num = countArcs(_graph); |
|
| 647 |
int all_node_num = _node_num + 1; |
|
| 648 |
int max_arc_num = _arc_num + 2 * _node_num; |
|
| 649 |
|
|
| 650 |
_source.resize(max_arc_num); |
|
| 651 |
_target.resize(max_arc_num); |
|
| 652 |
|
|
| 653 |
_lower.resize(_arc_num); |
|
| 654 |
_upper.resize(_arc_num); |
|
| 655 |
_cap.resize(max_arc_num); |
|
| 656 |
_cost.resize(max_arc_num); |
|
| 657 |
_supply.resize(all_node_num); |
|
| 658 |
_flow.resize(max_arc_num); |
|
| 659 |
_pi.resize(all_node_num); |
|
| 660 |
|
|
| 661 |
_parent.resize(all_node_num); |
|
| 662 |
_pred.resize(all_node_num); |
|
| 663 |
_forward.resize(all_node_num); |
|
| 664 |
_thread.resize(all_node_num); |
|
| 665 |
_rev_thread.resize(all_node_num); |
|
| 666 |
_succ_num.resize(all_node_num); |
|
| 667 |
_last_succ.resize(all_node_num); |
|
| 668 |
_state.resize(max_arc_num); |
|
| 669 |
|
|
| 670 |
// Copy the graph |
|
| 671 |
int i = 0; |
|
| 672 |
for (NodeIt n(_graph); n != INVALID; ++n, ++i) {
|
|
| 673 |
_node_id[n] = i; |
|
| 674 |
} |
|
| 675 |
if (arc_mixing) {
|
|
| 676 |
// Store the arcs in a mixed order |
|
| 677 |
int k = std::max(int(std::sqrt(double(_arc_num))), 10); |
|
| 678 |
int i = 0, j = 0; |
|
| 679 |
for (ArcIt a(_graph); a != INVALID; ++a) {
|
|
| 680 |
_arc_id[a] = i; |
|
| 681 |
_source[i] = _node_id[_graph.source(a)]; |
|
| 682 |
_target[i] = _node_id[_graph.target(a)]; |
|
| 683 |
if ((i += k) >= _arc_num) i = ++j; |
|
| 684 |
} |
|
| 685 |
} else {
|
|
| 686 |
// Store the arcs in the original order |
|
| 687 |
int i = 0; |
|
| 688 |
for (ArcIt a(_graph); a != INVALID; ++a, ++i) {
|
|
| 689 |
_arc_id[a] = i; |
|
| 690 |
_source[i] = _node_id[_graph.source(a)]; |
|
| 691 |
_target[i] = _node_id[_graph.target(a)]; |
|
| 692 |
} |
|
| 693 |
} |
|
| 694 |
|
|
| 695 |
// Reset parameters |
|
| 696 |
reset(); |
|
| 697 |
} |
|
| 698 |
|
|
| 699 |
/// \name Parameters |
|
| 700 |
/// The parameters of the algorithm can be specified using these |
|
| 701 |
/// functions. |
|
| 702 |
|
|
| 703 |
/// @{
|
|
| 704 |
|
|
| 705 |
/// \brief Set the lower bounds on the arcs. |
|
| 706 |
/// |
|
| 707 |
/// This function sets the lower bounds on the arcs. |
|
| 708 |
/// If it is not used before calling \ref run(), the lower bounds |
|
| 709 |
/// will be set to zero on all arcs. |
|
| 710 |
/// |
|
| 711 |
/// \param map An arc map storing the lower bounds. |
|
| 712 |
/// Its \c Value type must be convertible to the \c Value type |
|
| 713 |
/// of the algorithm. |
|
| 714 |
/// |
|
| 715 |
/// \return <tt>(*this)</tt> |
|
| 716 |
template <typename LowerMap> |
|
| 717 |
NetworkSimplex& lowerMap(const LowerMap& map) {
|
|
| 718 |
_have_lower = true; |
|
| 719 |
for (ArcIt a(_graph); a != INVALID; ++a) {
|
|
| 720 |
_lower[_arc_id[a]] = map[a]; |
|
| 721 |
} |
|
| 722 |
return *this; |
|
| 723 |
} |
|
| 724 |
|
|
| 725 |
/// \brief Set the upper bounds (capacities) on the arcs. |
|
| 726 |
/// |
|
| 727 |
/// This function sets the upper bounds (capacities) on the arcs. |
|
| 728 |
/// If it is not used before calling \ref run(), the upper bounds |
|
| 729 |
/// will be set to \ref INF on all arcs (i.e. the flow value will be |
|
| 730 |
/// unbounded from above on each arc). |
|
| 731 |
/// |
|
| 732 |
/// \param map An arc map storing the upper bounds. |
|
| 733 |
/// Its \c Value type must be convertible to the \c Value type |
|
| 734 |
/// of the algorithm. |
|
| 735 |
/// |
|
| 736 |
/// \return <tt>(*this)</tt> |
|
| 737 |
template<typename UpperMap> |
|
| 738 |
NetworkSimplex& upperMap(const UpperMap& map) {
|
|
| 739 |
for (ArcIt a(_graph); a != INVALID; ++a) {
|
|
| 740 |
_upper[_arc_id[a]] = map[a]; |
|
| 741 |
} |
|
| 742 |
return *this; |
|
| 743 |
} |
|
| 744 |
|
|
| 745 |
/// \brief Set the costs of the arcs. |
|
| 746 |
/// |
|
| 747 |
/// This function sets the costs of the arcs. |
|
| 748 |
/// If it is not used before calling \ref run(), the costs |
|
| 749 |
/// will be set to \c 1 on all arcs. |
|
| 750 |
/// |
|
| 751 |
/// \param map An arc map storing the costs. |
|
| 752 |
/// Its \c Value type must be convertible to the \c Cost type |
|
| 753 |
/// of the algorithm. |
|
| 754 |
/// |
|
| 755 |
/// \return <tt>(*this)</tt> |
|
| 756 |
template<typename CostMap> |
|
| 757 |
NetworkSimplex& costMap(const CostMap& map) {
|
|
| 758 |
for (ArcIt a(_graph); a != INVALID; ++a) {
|
|
| 759 |
_cost[_arc_id[a]] = map[a]; |
|
| 760 |
} |
|
| 761 |
return *this; |
|
| 762 |
} |
|
| 763 |
|
|
| 764 |
/// \brief Set the supply values of the nodes. |
|
| 765 |
/// |
|
| 766 |
/// This function sets the supply values of the nodes. |
|
| 767 |
/// If neither this function nor \ref stSupply() is used before |
|
| 768 |
/// calling \ref run(), the supply of each node will be set to zero. |
|
| 769 |
/// |
|
| 770 |
/// \param map A node map storing the supply values. |
|
| 771 |
/// Its \c Value type must be convertible to the \c Value type |
|
| 772 |
/// of the algorithm. |
|
| 773 |
/// |
|
| 774 |
/// \return <tt>(*this)</tt> |
|
| 775 |
template<typename SupplyMap> |
|
| 776 |
NetworkSimplex& supplyMap(const SupplyMap& map) {
|
|
| 777 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
|
| 778 |
_supply[_node_id[n]] = map[n]; |
|
| 779 |
} |
|
| 780 |
return *this; |
|
| 781 |
} |
|
| 782 |
|
|
| 783 |
/// \brief Set single source and target nodes and a supply value. |
|
| 784 |
/// |
|
| 785 |
/// This function sets a single source node and a single target node |
|
| 786 |
/// and the required flow value. |
|
| 787 |
/// If neither this function nor \ref supplyMap() is used before |
|
| 788 |
/// calling \ref run(), the supply of each node will be set to zero. |
|
| 789 |
/// |
|
| 790 |
/// Using this function has the same effect as using \ref supplyMap() |
|
| 791 |
/// with such a map in which \c k is assigned to \c s, \c -k is |
|
| 792 |
/// assigned to \c t and all other nodes have zero supply value. |
|
| 793 |
/// |
|
| 794 |
/// \param s The source node. |
|
| 795 |
/// \param t The target node. |
|
| 796 |
/// \param k The required amount of flow from node \c s to node \c t |
|
| 797 |
/// (i.e. the supply of \c s and the demand of \c t). |
|
| 798 |
/// |
|
| 799 |
/// \return <tt>(*this)</tt> |
|
| 800 |
NetworkSimplex& stSupply(const Node& s, const Node& t, Value k) {
|
|
| 801 |
for (int i = 0; i != _node_num; ++i) {
|
|
| 802 |
_supply[i] = 0; |
|
| 803 |
} |
|
| 804 |
_supply[_node_id[s]] = k; |
|
| 805 |
_supply[_node_id[t]] = -k; |
|
| 806 |
return *this; |
|
| 807 |
} |
|
| 808 |
|
|
| 809 |
/// \brief Set the type of the supply constraints. |
|
| 810 |
/// |
|
| 811 |
/// This function sets the type of the supply/demand constraints. |
|
| 812 |
/// If it is not used before calling \ref run(), the \ref GEQ supply |
|
| 813 |
/// type will be used. |
|
| 814 |
/// |
|
| 815 |
/// For more information see \ref SupplyType. |
|
| 816 |
/// |
|
| 817 |
/// \return <tt>(*this)</tt> |
|
| 818 |
NetworkSimplex& supplyType(SupplyType supply_type) {
|
|
| 819 |
_stype = supply_type; |
|
| 820 |
return *this; |
|
| 821 |
} |
|
| 822 |
|
|
| 823 |
/// @} |
|
| 824 |
|
|
| 825 |
/// \name Execution Control |
|
| 826 |
/// The algorithm can be executed using \ref run(). |
|
| 827 |
|
|
| 828 |
/// @{
|
|
| 829 |
|
|
| 830 |
/// \brief Run the algorithm. |
|
| 831 |
/// |
|
| 832 |
/// This function runs the algorithm. |
|
| 833 |
/// The paramters can be specified using functions \ref lowerMap(), |
|
| 834 |
/// \ref upperMap(), \ref costMap(), \ref supplyMap(), \ref stSupply(), |
|
| 835 |
/// \ref supplyType(). |
|
| 836 |
/// For example, |
|
| 837 |
/// \code |
|
| 838 |
/// NetworkSimplex<ListDigraph> ns(graph); |
|
| 839 |
/// ns.lowerMap(lower).upperMap(upper).costMap(cost) |
|
| 840 |
/// .supplyMap(sup).run(); |
|
| 841 |
/// \endcode |
|
| 842 |
/// |
|
| 843 |
/// This function can be called more than once. All the parameters |
|
| 844 |
/// that have been given are kept for the next call, unless |
|
| 845 |
/// \ref reset() is called, thus only the modified parameters |
|
| 846 |
/// have to be set again. See \ref reset() for examples. |
|
| 847 |
/// However the underlying digraph must not be modified after this |
|
| 848 |
/// class have been constructed, since it copies and extends the graph. |
|
| 849 |
/// |
|
| 850 |
/// \param pivot_rule The pivot rule that will be used during the |
|
| 851 |
/// algorithm. For more information see \ref PivotRule. |
|
| 852 |
/// |
|
| 853 |
/// \return \c INFEASIBLE if no feasible flow exists, |
|
| 854 |
/// \n \c OPTIMAL if the problem has optimal solution |
|
| 855 |
/// (i.e. it is feasible and bounded), and the algorithm has found |
|
| 856 |
/// optimal flow and node potentials (primal and dual solutions), |
|
| 857 |
/// \n \c UNBOUNDED if the objective function of the problem is |
|
| 858 |
/// unbounded, i.e. there is a directed cycle having negative total |
|
| 859 |
/// cost and infinite upper bound. |
|
| 860 |
/// |
|
| 861 |
/// \see ProblemType, PivotRule |
|
| 862 |
ProblemType run(PivotRule pivot_rule = BLOCK_SEARCH) {
|
|
| 863 |
if (!init()) return INFEASIBLE; |
|
| 864 |
return start(pivot_rule); |
|
| 865 |
} |
|
| 866 |
|
|
| 867 |
/// \brief Reset all the parameters that have been given before. |
|
| 868 |
/// |
|
| 869 |
/// This function resets all the paramaters that have been given |
|
| 870 |
/// before using functions \ref lowerMap(), \ref upperMap(), |
|
| 871 |
/// \ref costMap(), \ref supplyMap(), \ref stSupply(), \ref supplyType(). |
|
| 872 |
/// |
|
| 873 |
/// It is useful for multiple run() calls. If this function is not |
|
| 874 |
/// used, all the parameters given before are kept for the next |
|
| 875 |
/// \ref run() call. |
|
| 876 |
/// However the underlying digraph must not be modified after this |
|
| 877 |
/// class have been constructed, since it copies and extends the graph. |
|
| 878 |
/// |
|
| 879 |
/// For example, |
|
| 880 |
/// \code |
|
| 881 |
/// NetworkSimplex<ListDigraph> ns(graph); |
|
| 882 |
/// |
|
| 883 |
/// // First run |
|
| 884 |
/// ns.lowerMap(lower).upperMap(upper).costMap(cost) |
|
| 885 |
/// .supplyMap(sup).run(); |
|
| 886 |
/// |
|
| 887 |
/// // Run again with modified cost map (reset() is not called, |
|
| 888 |
/// // so only the cost map have to be set again) |
|
| 889 |
/// cost[e] += 100; |
|
| 890 |
/// ns.costMap(cost).run(); |
|
| 891 |
/// |
|
| 892 |
/// // Run again from scratch using reset() |
|
| 893 |
/// // (the lower bounds will be set to zero on all arcs) |
|
| 894 |
/// ns.reset(); |
|
| 895 |
/// ns.upperMap(capacity).costMap(cost) |
|
| 896 |
/// .supplyMap(sup).run(); |
|
| 897 |
/// \endcode |
|
| 898 |
/// |
|
| 899 |
/// \return <tt>(*this)</tt> |
|
| 900 |
NetworkSimplex& reset() {
|
|
| 901 |
for (int i = 0; i != _node_num; ++i) {
|
|
| 902 |
_supply[i] = 0; |
|
| 903 |
} |
|
| 904 |
for (int i = 0; i != _arc_num; ++i) {
|
|
| 905 |
_lower[i] = 0; |
|
| 906 |
_upper[i] = INF; |
|
| 907 |
_cost[i] = 1; |
|
| 908 |
} |
|
| 909 |
_have_lower = false; |
|
| 910 |
_stype = GEQ; |
|
| 911 |
return *this; |
|
| 912 |
} |
|
| 913 |
|
|
| 914 |
/// @} |
|
| 915 |
|
|
| 916 |
/// \name Query Functions |
|
| 917 |
/// The results of the algorithm can be obtained using these |
|
| 918 |
/// functions.\n |
|
| 919 |
/// The \ref run() function must be called before using them. |
|
| 920 |
|
|
| 921 |
/// @{
|
|
| 922 |
|
|
| 923 |
/// \brief Return the total cost of the found flow. |
|
| 924 |
/// |
|
| 925 |
/// This function returns the total cost of the found flow. |
|
| 926 |
/// Its complexity is O(e). |
|
| 927 |
/// |
|
| 928 |
/// \note The return type of the function can be specified as a |
|
| 929 |
/// template parameter. For example, |
|
| 930 |
/// \code |
|
| 931 |
/// ns.totalCost<double>(); |
|
| 932 |
/// \endcode |
|
| 933 |
/// It is useful if the total cost cannot be stored in the \c Cost |
|
| 934 |
/// type of the algorithm, which is the default return type of the |
|
| 935 |
/// function. |
|
| 936 |
/// |
|
| 937 |
/// \pre \ref run() must be called before using this function. |
|
| 938 |
template <typename Number> |
|
| 939 |
Number totalCost() const {
|
|
| 940 |
Number c = 0; |
|
| 941 |
for (ArcIt a(_graph); a != INVALID; ++a) {
|
|
| 942 |
int i = _arc_id[a]; |
|
| 943 |
c += Number(_flow[i]) * Number(_cost[i]); |
|
| 944 |
} |
|
| 945 |
return c; |
|
| 946 |
} |
|
| 947 |
|
|
| 948 |
#ifndef DOXYGEN |
|
| 949 |
Cost totalCost() const {
|
|
| 950 |
return totalCost<Cost>(); |
|
| 951 |
} |
|
| 952 |
#endif |
|
| 953 |
|
|
| 954 |
/// \brief Return the flow on the given arc. |
|
| 955 |
/// |
|
| 956 |
/// This function returns the flow on the given arc. |
|
| 957 |
/// |
|
| 958 |
/// \pre \ref run() must be called before using this function. |
|
| 959 |
Value flow(const Arc& a) const {
|
|
| 960 |
return _flow[_arc_id[a]]; |
|
| 961 |
} |
|
| 962 |
|
|
| 963 |
/// \brief Return the flow map (the primal solution). |
|
| 964 |
/// |
|
| 965 |
/// This function copies the flow value on each arc into the given |
|
| 966 |
/// map. The \c Value type of the algorithm must be convertible to |
|
| 967 |
/// the \c Value type of the map. |
|
| 968 |
/// |
|
| 969 |
/// \pre \ref run() must be called before using this function. |
|
| 970 |
template <typename FlowMap> |
|
| 971 |
void flowMap(FlowMap &map) const {
|
|
| 972 |
for (ArcIt a(_graph); a != INVALID; ++a) {
|
|
| 973 |
map.set(a, _flow[_arc_id[a]]); |
|
| 974 |
} |
|
| 975 |
} |
|
| 976 |
|
|
| 977 |
/// \brief Return the potential (dual value) of the given node. |
|
| 978 |
/// |
|
| 979 |
/// This function returns the potential (dual value) of the |
|
| 980 |
/// given node. |
|
| 981 |
/// |
|
| 982 |
/// \pre \ref run() must be called before using this function. |
|
| 983 |
Cost potential(const Node& n) const {
|
|
| 984 |
return _pi[_node_id[n]]; |
|
| 985 |
} |
|
| 986 |
|
|
| 987 |
/// \brief Return the potential map (the dual solution). |
|
| 988 |
/// |
|
| 989 |
/// This function copies the potential (dual value) of each node |
|
| 990 |
/// into the given map. |
|
| 991 |
/// The \c Cost type of the algorithm must be convertible to the |
|
| 992 |
/// \c Value type of the map. |
|
| 993 |
/// |
|
| 994 |
/// \pre \ref run() must be called before using this function. |
|
| 995 |
template <typename PotentialMap> |
|
| 996 |
void potentialMap(PotentialMap &map) const {
|
|
| 997 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
|
| 998 |
map.set(n, _pi[_node_id[n]]); |
|
| 999 |
} |
|
| 1000 |
} |
|
| 1001 |
|
|
| 1002 |
/// @} |
|
| 1003 |
|
|
| 1004 |
private: |
|
| 1005 |
|
|
| 1006 |
// Initialize internal data structures |
|
| 1007 |
bool init() {
|
|
| 1008 |
if (_node_num == 0) return false; |
|
| 1009 |
|
|
| 1010 |
// Check the sum of supply values |
|
| 1011 |
_sum_supply = 0; |
|
| 1012 |
for (int i = 0; i != _node_num; ++i) {
|
|
| 1013 |
_sum_supply += _supply[i]; |
|
| 1014 |
} |
|
| 1015 |
if ( !((_stype == GEQ && _sum_supply <= 0) || |
|
| 1016 |
(_stype == LEQ && _sum_supply >= 0)) ) return false; |
|
| 1017 |
|
|
| 1018 |
// Remove non-zero lower bounds |
|
| 1019 |
if (_have_lower) {
|
|
| 1020 |
for (int i = 0; i != _arc_num; ++i) {
|
|
| 1021 |
Value c = _lower[i]; |
|
| 1022 |
if (c >= 0) {
|
|
| 1023 |
_cap[i] = _upper[i] < INF ? _upper[i] - c : INF; |
|
| 1024 |
} else {
|
|
| 1025 |
_cap[i] = _upper[i] < INF + c ? _upper[i] - c : INF; |
|
| 1026 |
} |
|
| 1027 |
_supply[_source[i]] -= c; |
|
| 1028 |
_supply[_target[i]] += c; |
|
| 1029 |
} |
|
| 1030 |
} else {
|
|
| 1031 |
for (int i = 0; i != _arc_num; ++i) {
|
|
| 1032 |
_cap[i] = _upper[i]; |
|
| 1033 |
} |
|
| 1034 |
} |
|
| 1035 |
|
|
| 1036 |
// Initialize artifical cost |
|
| 1037 |
Cost ART_COST; |
|
| 1038 |
if (std::numeric_limits<Cost>::is_exact) {
|
|
| 1039 |
ART_COST = std::numeric_limits<Cost>::max() / 2 + 1; |
|
| 1040 |
} else {
|
|
| 1041 |
ART_COST = std::numeric_limits<Cost>::min(); |
|
| 1042 |
for (int i = 0; i != _arc_num; ++i) {
|
|
| 1043 |
if (_cost[i] > ART_COST) ART_COST = _cost[i]; |
|
| 1044 |
} |
|
| 1045 |
ART_COST = (ART_COST + 1) * _node_num; |
|
| 1046 |
} |
|
| 1047 |
|
|
| 1048 |
// Initialize arc maps |
|
| 1049 |
for (int i = 0; i != _arc_num; ++i) {
|
|
| 1050 |
_flow[i] = 0; |
|
| 1051 |
_state[i] = STATE_LOWER; |
|
| 1052 |
} |
|
| 1053 |
|
|
| 1054 |
// Set data for the artificial root node |
|
| 1055 |
_root = _node_num; |
|
| 1056 |
_parent[_root] = -1; |
|
| 1057 |
_pred[_root] = -1; |
|
| 1058 |
_thread[_root] = 0; |
|
| 1059 |
_rev_thread[0] = _root; |
|
| 1060 |
_succ_num[_root] = _node_num + 1; |
|
| 1061 |
_last_succ[_root] = _root - 1; |
|
| 1062 |
_supply[_root] = -_sum_supply; |
|
| 1063 |
_pi[_root] = 0; |
|
| 1064 |
|
|
| 1065 |
// Add artificial arcs and initialize the spanning tree data structure |
|
| 1066 |
if (_sum_supply == 0) {
|
|
| 1067 |
// EQ supply constraints |
|
| 1068 |
_search_arc_num = _arc_num; |
|
| 1069 |
_all_arc_num = _arc_num + _node_num; |
|
| 1070 |
for (int u = 0, e = _arc_num; u != _node_num; ++u, ++e) {
|
|
| 1071 |
_parent[u] = _root; |
|
| 1072 |
_pred[u] = e; |
|
| 1073 |
_thread[u] = u + 1; |
|
| 1074 |
_rev_thread[u + 1] = u; |
|
| 1075 |
_succ_num[u] = 1; |
|
| 1076 |
_last_succ[u] = u; |
|
| 1077 |
_cap[e] = INF; |
|
| 1078 |
_state[e] = STATE_TREE; |
|
| 1079 |
if (_supply[u] >= 0) {
|
|
| 1080 |
_forward[u] = true; |
|
| 1081 |
_pi[u] = 0; |
|
| 1082 |
_source[e] = u; |
|
| 1083 |
_target[e] = _root; |
|
| 1084 |
_flow[e] = _supply[u]; |
|
| 1085 |
_cost[e] = 0; |
|
| 1086 |
} else {
|
|
| 1087 |
_forward[u] = false; |
|
| 1088 |
_pi[u] = ART_COST; |
|
| 1089 |
_source[e] = _root; |
|
| 1090 |
_target[e] = u; |
|
| 1091 |
_flow[e] = -_supply[u]; |
|
| 1092 |
_cost[e] = ART_COST; |
|
| 1093 |
} |
|
| 1094 |
} |
|
| 1095 |
} |
|
| 1096 |
else if (_sum_supply > 0) {
|
|
| 1097 |
// LEQ supply constraints |
|
| 1098 |
_search_arc_num = _arc_num + _node_num; |
|
| 1099 |
int f = _arc_num + _node_num; |
|
| 1100 |
for (int u = 0, e = _arc_num; u != _node_num; ++u, ++e) {
|
|
| 1101 |
_parent[u] = _root; |
|
| 1102 |
_thread[u] = u + 1; |
|
| 1103 |
_rev_thread[u + 1] = u; |
|
| 1104 |
_succ_num[u] = 1; |
|
| 1105 |
_last_succ[u] = u; |
|
| 1106 |
if (_supply[u] >= 0) {
|
|
| 1107 |
_forward[u] = true; |
|
| 1108 |
_pi[u] = 0; |
|
| 1109 |
_pred[u] = e; |
|
| 1110 |
_source[e] = u; |
|
| 1111 |
_target[e] = _root; |
|
| 1112 |
_cap[e] = INF; |
|
| 1113 |
_flow[e] = _supply[u]; |
|
| 1114 |
_cost[e] = 0; |
|
| 1115 |
_state[e] = STATE_TREE; |
|
| 1116 |
} else {
|
|
| 1117 |
_forward[u] = false; |
|
| 1118 |
_pi[u] = ART_COST; |
|
| 1119 |
_pred[u] = f; |
|
| 1120 |
_source[f] = _root; |
|
| 1121 |
_target[f] = u; |
|
| 1122 |
_cap[f] = INF; |
|
| 1123 |
_flow[f] = -_supply[u]; |
|
| 1124 |
_cost[f] = ART_COST; |
|
| 1125 |
_state[f] = STATE_TREE; |
|
| 1126 |
_source[e] = u; |
|
| 1127 |
_target[e] = _root; |
|
| 1128 |
_cap[e] = INF; |
|
| 1129 |
_flow[e] = 0; |
|
| 1130 |
_cost[e] = 0; |
|
| 1131 |
_state[e] = STATE_LOWER; |
|
| 1132 |
++f; |
|
| 1133 |
} |
|
| 1134 |
} |
|
| 1135 |
_all_arc_num = f; |
|
| 1136 |
} |
|
| 1137 |
else {
|
|
| 1138 |
// GEQ supply constraints |
|
| 1139 |
_search_arc_num = _arc_num + _node_num; |
|
| 1140 |
int f = _arc_num + _node_num; |
|
| 1141 |
for (int u = 0, e = _arc_num; u != _node_num; ++u, ++e) {
|
|
| 1142 |
_parent[u] = _root; |
|
| 1143 |
_thread[u] = u + 1; |
|
| 1144 |
_rev_thread[u + 1] = u; |
|
| 1145 |
_succ_num[u] = 1; |
|
| 1146 |
_last_succ[u] = u; |
|
| 1147 |
if (_supply[u] <= 0) {
|
|
| 1148 |
_forward[u] = false; |
|
| 1149 |
_pi[u] = 0; |
|
| 1150 |
_pred[u] = e; |
|
| 1151 |
_source[e] = _root; |
|
| 1152 |
_target[e] = u; |
|
| 1153 |
_cap[e] = INF; |
|
| 1154 |
_flow[e] = -_supply[u]; |
|
| 1155 |
_cost[e] = 0; |
|
| 1156 |
_state[e] = STATE_TREE; |
|
| 1157 |
} else {
|
|
| 1158 |
_forward[u] = true; |
|
| 1159 |
_pi[u] = -ART_COST; |
|
| 1160 |
_pred[u] = f; |
|
| 1161 |
_source[f] = u; |
|
| 1162 |
_target[f] = _root; |
|
| 1163 |
_cap[f] = INF; |
|
| 1164 |
_flow[f] = _supply[u]; |
|
| 1165 |
_state[f] = STATE_TREE; |
|
| 1166 |
_cost[f] = ART_COST; |
|
| 1167 |
_source[e] = _root; |
|
| 1168 |
_target[e] = u; |
|
| 1169 |
_cap[e] = INF; |
|
| 1170 |
_flow[e] = 0; |
|
| 1171 |
_cost[e] = 0; |
|
| 1172 |
_state[e] = STATE_LOWER; |
|
| 1173 |
++f; |
|
| 1174 |
} |
|
| 1175 |
} |
|
| 1176 |
_all_arc_num = f; |
|
| 1177 |
} |
|
| 1178 |
|
|
| 1179 |
return true; |
|
| 1180 |
} |
|
| 1181 |
|
|
| 1182 |
// Find the join node |
|
| 1183 |
void findJoinNode() {
|
|
| 1184 |
int u = _source[in_arc]; |
|
| 1185 |
int v = _target[in_arc]; |
|
| 1186 |
while (u != v) {
|
|
| 1187 |
if (_succ_num[u] < _succ_num[v]) {
|
|
| 1188 |
u = _parent[u]; |
|
| 1189 |
} else {
|
|
| 1190 |
v = _parent[v]; |
|
| 1191 |
} |
|
| 1192 |
} |
|
| 1193 |
join = u; |
|
| 1194 |
} |
|
| 1195 |
|
|
| 1196 |
// Find the leaving arc of the cycle and returns true if the |
|
| 1197 |
// leaving arc is not the same as the entering arc |
|
| 1198 |
bool findLeavingArc() {
|
|
| 1199 |
// Initialize first and second nodes according to the direction |
|
| 1200 |
// of the cycle |
|
| 1201 |
if (_state[in_arc] == STATE_LOWER) {
|
|
| 1202 |
first = _source[in_arc]; |
|
| 1203 |
second = _target[in_arc]; |
|
| 1204 |
} else {
|
|
| 1205 |
first = _target[in_arc]; |
|
| 1206 |
second = _source[in_arc]; |
|
| 1207 |
} |
|
| 1208 |
delta = _cap[in_arc]; |
|
| 1209 |
int result = 0; |
|
| 1210 |
Value d; |
|
| 1211 |
int e; |
|
| 1212 |
|
|
| 1213 |
// Search the cycle along the path form the first node to the root |
|
| 1214 |
for (int u = first; u != join; u = _parent[u]) {
|
|
| 1215 |
e = _pred[u]; |
|
| 1216 |
d = _forward[u] ? |
|
| 1217 |
_flow[e] : (_cap[e] == INF ? INF : _cap[e] - _flow[e]); |
|
| 1218 |
if (d < delta) {
|
|
| 1219 |
delta = d; |
|
| 1220 |
u_out = u; |
|
| 1221 |
result = 1; |
|
| 1222 |
} |
|
| 1223 |
} |
|
| 1224 |
// Search the cycle along the path form the second node to the root |
|
| 1225 |
for (int u = second; u != join; u = _parent[u]) {
|
|
| 1226 |
e = _pred[u]; |
|
| 1227 |
d = _forward[u] ? |
|
| 1228 |
(_cap[e] == INF ? INF : _cap[e] - _flow[e]) : _flow[e]; |
|
| 1229 |
if (d <= delta) {
|
|
| 1230 |
delta = d; |
|
| 1231 |
u_out = u; |
|
| 1232 |
result = 2; |
|
| 1233 |
} |
|
| 1234 |
} |
|
| 1235 |
|
|
| 1236 |
if (result == 1) {
|
|
| 1237 |
u_in = first; |
|
| 1238 |
v_in = second; |
|
| 1239 |
} else {
|
|
| 1240 |
u_in = second; |
|
| 1241 |
v_in = first; |
|
| 1242 |
} |
|
| 1243 |
return result != 0; |
|
| 1244 |
} |
|
| 1245 |
|
|
| 1246 |
// Change _flow and _state vectors |
|
| 1247 |
void changeFlow(bool change) {
|
|
| 1248 |
// Augment along the cycle |
|
| 1249 |
if (delta > 0) {
|
|
| 1250 |
Value val = _state[in_arc] * delta; |
|
| 1251 |
_flow[in_arc] += val; |
|
| 1252 |
for (int u = _source[in_arc]; u != join; u = _parent[u]) {
|
|
| 1253 |
_flow[_pred[u]] += _forward[u] ? -val : val; |
|
| 1254 |
} |
|
| 1255 |
for (int u = _target[in_arc]; u != join; u = _parent[u]) {
|
|
| 1256 |
_flow[_pred[u]] += _forward[u] ? val : -val; |
|
| 1257 |
} |
|
| 1258 |
} |
|
| 1259 |
// Update the state of the entering and leaving arcs |
|
| 1260 |
if (change) {
|
|
| 1261 |
_state[in_arc] = STATE_TREE; |
|
| 1262 |
_state[_pred[u_out]] = |
|
| 1263 |
(_flow[_pred[u_out]] == 0) ? STATE_LOWER : STATE_UPPER; |
|
| 1264 |
} else {
|
|
| 1265 |
_state[in_arc] = -_state[in_arc]; |
|
| 1266 |
} |
|
| 1267 |
} |
|
| 1268 |
|
|
| 1269 |
// Update the tree structure |
|
| 1270 |
void updateTreeStructure() {
|
|
| 1271 |
int u, w; |
|
| 1272 |
int old_rev_thread = _rev_thread[u_out]; |
|
| 1273 |
int old_succ_num = _succ_num[u_out]; |
|
| 1274 |
int old_last_succ = _last_succ[u_out]; |
|
| 1275 |
v_out = _parent[u_out]; |
|
| 1276 |
|
|
| 1277 |
u = _last_succ[u_in]; // the last successor of u_in |
|
| 1278 |
right = _thread[u]; // the node after it |
|
| 1279 |
|
|
| 1280 |
// Handle the case when old_rev_thread equals to v_in |
|
| 1281 |
// (it also means that join and v_out coincide) |
|
| 1282 |
if (old_rev_thread == v_in) {
|
|
| 1283 |
last = _thread[_last_succ[u_out]]; |
|
| 1284 |
} else {
|
|
| 1285 |
last = _thread[v_in]; |
|
| 1286 |
} |
|
| 1287 |
|
|
| 1288 |
// Update _thread and _parent along the stem nodes (i.e. the nodes |
|
| 1289 |
// between u_in and u_out, whose parent have to be changed) |
|
| 1290 |
_thread[v_in] = stem = u_in; |
|
| 1291 |
_dirty_revs.clear(); |
|
| 1292 |
_dirty_revs.push_back(v_in); |
|
| 1293 |
par_stem = v_in; |
|
| 1294 |
while (stem != u_out) {
|
|
| 1295 |
// Insert the next stem node into the thread list |
|
| 1296 |
new_stem = _parent[stem]; |
|
| 1297 |
_thread[u] = new_stem; |
|
| 1298 |
_dirty_revs.push_back(u); |
|
| 1299 |
|
|
| 1300 |
// Remove the subtree of stem from the thread list |
|
| 1301 |
w = _rev_thread[stem]; |
|
| 1302 |
_thread[w] = right; |
|
| 1303 |
_rev_thread[right] = w; |
|
| 1304 |
|
|
| 1305 |
// Change the parent node and shift stem nodes |
|
| 1306 |
_parent[stem] = par_stem; |
|
| 1307 |
par_stem = stem; |
|
| 1308 |
stem = new_stem; |
|
| 1309 |
|
|
| 1310 |
// Update u and right |
|
| 1311 |
u = _last_succ[stem] == _last_succ[par_stem] ? |
|
| 1312 |
_rev_thread[par_stem] : _last_succ[stem]; |
|
| 1313 |
right = _thread[u]; |
|
| 1314 |
} |
|
| 1315 |
_parent[u_out] = par_stem; |
|
| 1316 |
_thread[u] = last; |
|
| 1317 |
_rev_thread[last] = u; |
|
| 1318 |
_last_succ[u_out] = u; |
|
| 1319 |
|
|
| 1320 |
// Remove the subtree of u_out from the thread list except for |
|
| 1321 |
// the case when old_rev_thread equals to v_in |
|
| 1322 |
// (it also means that join and v_out coincide) |
|
| 1323 |
if (old_rev_thread != v_in) {
|
|
| 1324 |
_thread[old_rev_thread] = right; |
|
| 1325 |
_rev_thread[right] = old_rev_thread; |
|
| 1326 |
} |
|
| 1327 |
|
|
| 1328 |
// Update _rev_thread using the new _thread values |
|
| 1329 |
for (int i = 0; i < int(_dirty_revs.size()); ++i) {
|
|
| 1330 |
u = _dirty_revs[i]; |
|
| 1331 |
_rev_thread[_thread[u]] = u; |
|
| 1332 |
} |
|
| 1333 |
|
|
| 1334 |
// Update _pred, _forward, _last_succ and _succ_num for the |
|
| 1335 |
// stem nodes from u_out to u_in |
|
| 1336 |
int tmp_sc = 0, tmp_ls = _last_succ[u_out]; |
|
| 1337 |
u = u_out; |
|
| 1338 |
while (u != u_in) {
|
|
| 1339 |
w = _parent[u]; |
|
| 1340 |
_pred[u] = _pred[w]; |
|
| 1341 |
_forward[u] = !_forward[w]; |
|
| 1342 |
tmp_sc += _succ_num[u] - _succ_num[w]; |
|
| 1343 |
_succ_num[u] = tmp_sc; |
|
| 1344 |
_last_succ[w] = tmp_ls; |
|
| 1345 |
u = w; |
|
| 1346 |
} |
|
| 1347 |
_pred[u_in] = in_arc; |
|
| 1348 |
_forward[u_in] = (u_in == _source[in_arc]); |
|
| 1349 |
_succ_num[u_in] = old_succ_num; |
|
| 1350 |
|
|
| 1351 |
// Set limits for updating _last_succ form v_in and v_out |
|
| 1352 |
// towards the root |
|
| 1353 |
int up_limit_in = -1; |
|
| 1354 |
int up_limit_out = -1; |
|
| 1355 |
if (_last_succ[join] == v_in) {
|
|
| 1356 |
up_limit_out = join; |
|
| 1357 |
} else {
|
|
| 1358 |
up_limit_in = join; |
|
| 1359 |
} |
|
| 1360 |
|
|
| 1361 |
// Update _last_succ from v_in towards the root |
|
| 1362 |
for (u = v_in; u != up_limit_in && _last_succ[u] == v_in; |
|
| 1363 |
u = _parent[u]) {
|
|
| 1364 |
_last_succ[u] = _last_succ[u_out]; |
|
| 1365 |
} |
|
| 1366 |
// Update _last_succ from v_out towards the root |
|
| 1367 |
if (join != old_rev_thread && v_in != old_rev_thread) {
|
|
| 1368 |
for (u = v_out; u != up_limit_out && _last_succ[u] == old_last_succ; |
|
| 1369 |
u = _parent[u]) {
|
|
| 1370 |
_last_succ[u] = old_rev_thread; |
|
| 1371 |
} |
|
| 1372 |
} else {
|
|
| 1373 |
for (u = v_out; u != up_limit_out && _last_succ[u] == old_last_succ; |
|
| 1374 |
u = _parent[u]) {
|
|
| 1375 |
_last_succ[u] = _last_succ[u_out]; |
|
| 1376 |
} |
|
| 1377 |
} |
|
| 1378 |
|
|
| 1379 |
// Update _succ_num from v_in to join |
|
| 1380 |
for (u = v_in; u != join; u = _parent[u]) {
|
|
| 1381 |
_succ_num[u] += old_succ_num; |
|
| 1382 |
} |
|
| 1383 |
// Update _succ_num from v_out to join |
|
| 1384 |
for (u = v_out; u != join; u = _parent[u]) {
|
|
| 1385 |
_succ_num[u] -= old_succ_num; |
|
| 1386 |
} |
|
| 1387 |
} |
|
| 1388 |
|
|
| 1389 |
// Update potentials |
|
| 1390 |
void updatePotential() {
|
|
| 1391 |
Cost sigma = _forward[u_in] ? |
|
| 1392 |
_pi[v_in] - _pi[u_in] - _cost[_pred[u_in]] : |
|
| 1393 |
_pi[v_in] - _pi[u_in] + _cost[_pred[u_in]]; |
|
| 1394 |
// Update potentials in the subtree, which has been moved |
|
| 1395 |
int end = _thread[_last_succ[u_in]]; |
|
| 1396 |
for (int u = u_in; u != end; u = _thread[u]) {
|
|
| 1397 |
_pi[u] += sigma; |
|
| 1398 |
} |
|
| 1399 |
} |
|
| 1400 |
|
|
| 1401 |
// Execute the algorithm |
|
| 1402 |
ProblemType start(PivotRule pivot_rule) {
|
|
| 1403 |
// Select the pivot rule implementation |
|
| 1404 |
switch (pivot_rule) {
|
|
| 1405 |
case FIRST_ELIGIBLE: |
|
| 1406 |
return start<FirstEligiblePivotRule>(); |
|
| 1407 |
case BEST_ELIGIBLE: |
|
| 1408 |
return start<BestEligiblePivotRule>(); |
|
| 1409 |
case BLOCK_SEARCH: |
|
| 1410 |
return start<BlockSearchPivotRule>(); |
|
| 1411 |
case CANDIDATE_LIST: |
|
| 1412 |
return start<CandidateListPivotRule>(); |
|
| 1413 |
case ALTERING_LIST: |
|
| 1414 |
return start<AlteringListPivotRule>(); |
|
| 1415 |
} |
|
| 1416 |
return INFEASIBLE; // avoid warning |
|
| 1417 |
} |
|
| 1418 |
|
|
| 1419 |
template <typename PivotRuleImpl> |
|
| 1420 |
ProblemType start() {
|
|
| 1421 |
PivotRuleImpl pivot(*this); |
|
| 1422 |
|
|
| 1423 |
// Execute the Network Simplex algorithm |
|
| 1424 |
while (pivot.findEnteringArc()) {
|
|
| 1425 |
findJoinNode(); |
|
| 1426 |
bool change = findLeavingArc(); |
|
| 1427 |
if (delta >= INF) return UNBOUNDED; |
|
| 1428 |
changeFlow(change); |
|
| 1429 |
if (change) {
|
|
| 1430 |
updateTreeStructure(); |
|
| 1431 |
updatePotential(); |
|
| 1432 |
} |
|
| 1433 |
} |
|
| 1434 |
|
|
| 1435 |
// Check feasibility |
|
| 1436 |
for (int e = _search_arc_num; e != _all_arc_num; ++e) {
|
|
| 1437 |
if (_flow[e] != 0) return INFEASIBLE; |
|
| 1438 |
} |
|
| 1439 |
|
|
| 1440 |
// Transform the solution and the supply map to the original form |
|
| 1441 |
if (_have_lower) {
|
|
| 1442 |
for (int i = 0; i != _arc_num; ++i) {
|
|
| 1443 |
Value c = _lower[i]; |
|
| 1444 |
if (c != 0) {
|
|
| 1445 |
_flow[i] += c; |
|
| 1446 |
_supply[_source[i]] += c; |
|
| 1447 |
_supply[_target[i]] -= c; |
|
| 1448 |
} |
|
| 1449 |
} |
|
| 1450 |
} |
|
| 1451 |
|
|
| 1452 |
// Shift potentials to meet the requirements of the GEQ/LEQ type |
|
| 1453 |
// optimality conditions |
|
| 1454 |
if (_sum_supply == 0) {
|
|
| 1455 |
if (_stype == GEQ) {
|
|
| 1456 |
Cost max_pot = std::numeric_limits<Cost>::min(); |
|
| 1457 |
for (int i = 0; i != _node_num; ++i) {
|
|
| 1458 |
if (_pi[i] > max_pot) max_pot = _pi[i]; |
|
| 1459 |
} |
|
| 1460 |
if (max_pot > 0) {
|
|
| 1461 |
for (int i = 0; i != _node_num; ++i) |
|
| 1462 |
_pi[i] -= max_pot; |
|
| 1463 |
} |
|
| 1464 |
} else {
|
|
| 1465 |
Cost min_pot = std::numeric_limits<Cost>::max(); |
|
| 1466 |
for (int i = 0; i != _node_num; ++i) {
|
|
| 1467 |
if (_pi[i] < min_pot) min_pot = _pi[i]; |
|
| 1468 |
} |
|
| 1469 |
if (min_pot < 0) {
|
|
| 1470 |
for (int i = 0; i != _node_num; ++i) |
|
| 1471 |
_pi[i] -= min_pot; |
|
| 1472 |
} |
|
| 1473 |
} |
|
| 1474 |
} |
|
| 1475 |
|
|
| 1476 |
return OPTIMAL; |
|
| 1477 |
} |
|
| 1478 |
|
|
| 1479 |
}; //class NetworkSimplex |
|
| 1480 |
|
|
| 1481 |
///@} |
|
| 1482 |
|
|
| 1483 |
} //namespace lemon |
|
| 1484 |
|
|
| 1485 |
#endif //LEMON_NETWORK_SIMPLEX_H |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_PAIRING_HEAP_H |
|
| 20 |
#define LEMON_PAIRING_HEAP_H |
|
| 21 |
|
|
| 22 |
///\file |
|
| 23 |
///\ingroup heaps |
|
| 24 |
///\brief Pairing heap implementation. |
|
| 25 |
|
|
| 26 |
#include <vector> |
|
| 27 |
#include <utility> |
|
| 28 |
#include <functional> |
|
| 29 |
#include <lemon/math.h> |
|
| 30 |
|
|
| 31 |
namespace lemon {
|
|
| 32 |
|
|
| 33 |
/// \ingroup heaps |
|
| 34 |
/// |
|
| 35 |
///\brief Pairing Heap. |
|
| 36 |
/// |
|
| 37 |
/// This class implements the \e pairing \e heap data structure. |
|
| 38 |
/// It fully conforms to the \ref concepts::Heap "heap concept". |
|
| 39 |
/// |
|
| 40 |
/// The methods \ref increase() and \ref erase() are not efficient |
|
| 41 |
/// in a pairing heap. In case of many calls of these operations, |
|
| 42 |
/// it is better to use other heap structure, e.g. \ref BinHeap |
|
| 43 |
/// "binary heap". |
|
| 44 |
/// |
|
| 45 |
/// \tparam PR Type of the priorities of the items. |
|
| 46 |
/// \tparam IM A read-writable item map with \c int values, used |
|
| 47 |
/// internally to handle the cross references. |
|
| 48 |
/// \tparam CMP A functor class for comparing the priorities. |
|
| 49 |
/// The default is \c std::less<PR>. |
|
| 50 |
#ifdef DOXYGEN |
|
| 51 |
template <typename PR, typename IM, typename CMP> |
|
| 52 |
#else |
|
| 53 |
template <typename PR, typename IM, typename CMP = std::less<PR> > |
|
| 54 |
#endif |
|
| 55 |
class PairingHeap {
|
|
| 56 |
public: |
|
| 57 |
/// Type of the item-int map. |
|
| 58 |
typedef IM ItemIntMap; |
|
| 59 |
/// Type of the priorities. |
|
| 60 |
typedef PR Prio; |
|
| 61 |
/// Type of the items stored in the heap. |
|
| 62 |
typedef typename ItemIntMap::Key Item; |
|
| 63 |
/// Functor type for comparing the priorities. |
|
| 64 |
typedef CMP Compare; |
|
| 65 |
|
|
| 66 |
/// \brief Type to represent the states of the items. |
|
| 67 |
/// |
|
| 68 |
/// Each item has a state associated to it. It can be "in heap", |
|
| 69 |
/// "pre-heap" or "post-heap". The latter two are indifferent from the |
|
| 70 |
/// heap's point of view, but may be useful to the user. |
|
| 71 |
/// |
|
| 72 |
/// The item-int map must be initialized in such way that it assigns |
|
| 73 |
/// \c PRE_HEAP (<tt>-1</tt>) to any element to be put in the heap. |
|
| 74 |
enum State {
|
|
| 75 |
IN_HEAP = 0, ///< = 0. |
|
| 76 |
PRE_HEAP = -1, ///< = -1. |
|
| 77 |
POST_HEAP = -2 ///< = -2. |
|
| 78 |
}; |
|
| 79 |
|
|
| 80 |
private: |
|
| 81 |
class store; |
|
| 82 |
|
|
| 83 |
std::vector<store> _data; |
|
| 84 |
int _min; |
|
| 85 |
ItemIntMap &_iim; |
|
| 86 |
Compare _comp; |
|
| 87 |
int _num_items; |
|
| 88 |
|
|
| 89 |
public: |
|
| 90 |
/// \brief Constructor. |
|
| 91 |
/// |
|
| 92 |
/// Constructor. |
|
| 93 |
/// \param map A map that assigns \c int values to the items. |
|
| 94 |
/// It is used internally to handle the cross references. |
|
| 95 |
/// The assigned value must be \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 96 |
explicit PairingHeap(ItemIntMap &map) |
|
| 97 |
: _min(0), _iim(map), _num_items(0) {}
|
|
| 98 |
|
|
| 99 |
/// \brief Constructor. |
|
| 100 |
/// |
|
| 101 |
/// Constructor. |
|
| 102 |
/// \param map A map that assigns \c int values to the items. |
|
| 103 |
/// It is used internally to handle the cross references. |
|
| 104 |
/// The assigned value must be \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 105 |
/// \param comp The function object used for comparing the priorities. |
|
| 106 |
PairingHeap(ItemIntMap &map, const Compare &comp) |
|
| 107 |
: _min(0), _iim(map), _comp(comp), _num_items(0) {}
|
|
| 108 |
|
|
| 109 |
/// \brief The number of items stored in the heap. |
|
| 110 |
/// |
|
| 111 |
/// This function returns the number of items stored in the heap. |
|
| 112 |
int size() const { return _num_items; }
|
|
| 113 |
|
|
| 114 |
/// \brief Check if the heap is empty. |
|
| 115 |
/// |
|
| 116 |
/// This function returns \c true if the heap is empty. |
|
| 117 |
bool empty() const { return _num_items==0; }
|
|
| 118 |
|
|
| 119 |
/// \brief Make the heap empty. |
|
| 120 |
/// |
|
| 121 |
/// This functon makes the heap empty. |
|
| 122 |
/// It does not change the cross reference map. If you want to reuse |
|
| 123 |
/// a heap that is not surely empty, you should first clear it and |
|
| 124 |
/// then you should set the cross reference map to \c PRE_HEAP |
|
| 125 |
/// for each item. |
|
| 126 |
void clear() {
|
|
| 127 |
_data.clear(); |
|
| 128 |
_min = 0; |
|
| 129 |
_num_items = 0; |
|
| 130 |
} |
|
| 131 |
|
|
| 132 |
/// \brief Set the priority of an item or insert it, if it is |
|
| 133 |
/// not stored in the heap. |
|
| 134 |
/// |
|
| 135 |
/// This method sets the priority of the given item if it is |
|
| 136 |
/// already stored in the heap. Otherwise it inserts the given |
|
| 137 |
/// item into the heap with the given priority. |
|
| 138 |
/// \param item The item. |
|
| 139 |
/// \param value The priority. |
|
| 140 |
void set (const Item& item, const Prio& value) {
|
|
| 141 |
int i=_iim[item]; |
|
| 142 |
if ( i>=0 && _data[i].in ) {
|
|
| 143 |
if ( _comp(value, _data[i].prio) ) decrease(item, value); |
|
| 144 |
if ( _comp(_data[i].prio, value) ) increase(item, value); |
|
| 145 |
} else push(item, value); |
|
| 146 |
} |
|
| 147 |
|
|
| 148 |
/// \brief Insert an item into the heap with the given priority. |
|
| 149 |
/// |
|
| 150 |
/// This function inserts the given item into the heap with the |
|
| 151 |
/// given priority. |
|
| 152 |
/// \param item The item to insert. |
|
| 153 |
/// \param value The priority of the item. |
|
| 154 |
/// \pre \e item must not be stored in the heap. |
|
| 155 |
void push (const Item& item, const Prio& value) {
|
|
| 156 |
int i=_iim[item]; |
|
| 157 |
if( i<0 ) {
|
|
| 158 |
int s=_data.size(); |
|
| 159 |
_iim.set(item, s); |
|
| 160 |
store st; |
|
| 161 |
st.name=item; |
|
| 162 |
_data.push_back(st); |
|
| 163 |
i=s; |
|
| 164 |
} else {
|
|
| 165 |
_data[i].parent=_data[i].child=-1; |
|
| 166 |
_data[i].left_child=false; |
|
| 167 |
_data[i].degree=0; |
|
| 168 |
_data[i].in=true; |
|
| 169 |
} |
|
| 170 |
|
|
| 171 |
_data[i].prio=value; |
|
| 172 |
|
|
| 173 |
if ( _num_items!=0 ) {
|
|
| 174 |
if ( _comp( value, _data[_min].prio) ) {
|
|
| 175 |
fuse(i,_min); |
|
| 176 |
_min=i; |
|
| 177 |
} |
|
| 178 |
else fuse(_min,i); |
|
| 179 |
} |
|
| 180 |
else _min=i; |
|
| 181 |
|
|
| 182 |
++_num_items; |
|
| 183 |
} |
|
| 184 |
|
|
| 185 |
/// \brief Return the item having minimum priority. |
|
| 186 |
/// |
|
| 187 |
/// This function returns the item having minimum priority. |
|
| 188 |
/// \pre The heap must be non-empty. |
|
| 189 |
Item top() const { return _data[_min].name; }
|
|
| 190 |
|
|
| 191 |
/// \brief The minimum priority. |
|
| 192 |
/// |
|
| 193 |
/// This function returns the minimum priority. |
|
| 194 |
/// \pre The heap must be non-empty. |
|
| 195 |
const Prio& prio() const { return _data[_min].prio; }
|
|
| 196 |
|
|
| 197 |
/// \brief The priority of the given item. |
|
| 198 |
/// |
|
| 199 |
/// This function returns the priority of the given item. |
|
| 200 |
/// \param item The item. |
|
| 201 |
/// \pre \e item must be in the heap. |
|
| 202 |
const Prio& operator[](const Item& item) const {
|
|
| 203 |
return _data[_iim[item]].prio; |
|
| 204 |
} |
|
| 205 |
|
|
| 206 |
/// \brief Remove the item having minimum priority. |
|
| 207 |
/// |
|
| 208 |
/// This function removes the item having minimum priority. |
|
| 209 |
/// \pre The heap must be non-empty. |
|
| 210 |
void pop() {
|
|
| 211 |
std::vector<int> trees; |
|
| 212 |
int i=0, child_right = 0; |
|
| 213 |
_data[_min].in=false; |
|
| 214 |
|
|
| 215 |
if( -1!=_data[_min].child ) {
|
|
| 216 |
i=_data[_min].child; |
|
| 217 |
trees.push_back(i); |
|
| 218 |
_data[i].parent = -1; |
|
| 219 |
_data[_min].child = -1; |
|
| 220 |
|
|
| 221 |
int ch=-1; |
|
| 222 |
while( _data[i].child!=-1 ) {
|
|
| 223 |
ch=_data[i].child; |
|
| 224 |
if( _data[ch].left_child && i==_data[ch].parent ) {
|
|
| 225 |
break; |
|
| 226 |
} else {
|
|
| 227 |
if( _data[ch].left_child ) {
|
|
| 228 |
child_right=_data[ch].parent; |
|
| 229 |
_data[ch].parent = i; |
|
| 230 |
--_data[i].degree; |
|
| 231 |
} |
|
| 232 |
else {
|
|
| 233 |
child_right=ch; |
|
| 234 |
_data[i].child=-1; |
|
| 235 |
_data[i].degree=0; |
|
| 236 |
} |
|
| 237 |
_data[child_right].parent = -1; |
|
| 238 |
trees.push_back(child_right); |
|
| 239 |
i = child_right; |
|
| 240 |
} |
|
| 241 |
} |
|
| 242 |
|
|
| 243 |
int num_child = trees.size(); |
|
| 244 |
int other; |
|
| 245 |
for( i=0; i<num_child-1; i+=2 ) {
|
|
| 246 |
if ( !_comp(_data[trees[i]].prio, _data[trees[i+1]].prio) ) {
|
|
| 247 |
other=trees[i]; |
|
| 248 |
trees[i]=trees[i+1]; |
|
| 249 |
trees[i+1]=other; |
|
| 250 |
} |
|
| 251 |
fuse( trees[i], trees[i+1] ); |
|
| 252 |
} |
|
| 253 |
|
|
| 254 |
i = (0==(num_child % 2)) ? num_child-2 : num_child-1; |
|
| 255 |
while(i>=2) {
|
|
| 256 |
if ( _comp(_data[trees[i]].prio, _data[trees[i-2]].prio) ) {
|
|
| 257 |
other=trees[i]; |
|
| 258 |
trees[i]=trees[i-2]; |
|
| 259 |
trees[i-2]=other; |
|
| 260 |
} |
|
| 261 |
fuse( trees[i-2], trees[i] ); |
|
| 262 |
i-=2; |
|
| 263 |
} |
|
| 264 |
_min = trees[0]; |
|
| 265 |
} |
|
| 266 |
else {
|
|
| 267 |
_min = _data[_min].child; |
|
| 268 |
} |
|
| 269 |
|
|
| 270 |
if (_min >= 0) _data[_min].left_child = false; |
|
| 271 |
--_num_items; |
|
| 272 |
} |
|
| 273 |
|
|
| 274 |
/// \brief Remove the given item from the heap. |
|
| 275 |
/// |
|
| 276 |
/// This function removes the given item from the heap if it is |
|
| 277 |
/// already stored. |
|
| 278 |
/// \param item The item to delete. |
|
| 279 |
/// \pre \e item must be in the heap. |
|
| 280 |
void erase (const Item& item) {
|
|
| 281 |
int i=_iim[item]; |
|
| 282 |
if ( i>=0 && _data[i].in ) {
|
|
| 283 |
decrease( item, _data[_min].prio-1 ); |
|
| 284 |
pop(); |
|
| 285 |
} |
|
| 286 |
} |
|
| 287 |
|
|
| 288 |
/// \brief Decrease the priority of an item to the given value. |
|
| 289 |
/// |
|
| 290 |
/// This function decreases the priority of an item to the given value. |
|
| 291 |
/// \param item The item. |
|
| 292 |
/// \param value The priority. |
|
| 293 |
/// \pre \e item must be stored in the heap with priority at least \e value. |
|
| 294 |
void decrease (Item item, const Prio& value) {
|
|
| 295 |
int i=_iim[item]; |
|
| 296 |
_data[i].prio=value; |
|
| 297 |
int p=_data[i].parent; |
|
| 298 |
|
|
| 299 |
if( _data[i].left_child && i!=_data[p].child ) {
|
|
| 300 |
p=_data[p].parent; |
|
| 301 |
} |
|
| 302 |
|
|
| 303 |
if ( p!=-1 && _comp(value,_data[p].prio) ) {
|
|
| 304 |
cut(i,p); |
|
| 305 |
if ( _comp(_data[_min].prio,value) ) {
|
|
| 306 |
fuse(_min,i); |
|
| 307 |
} else {
|
|
| 308 |
fuse(i,_min); |
|
| 309 |
_min=i; |
|
| 310 |
} |
|
| 311 |
} |
|
| 312 |
} |
|
| 313 |
|
|
| 314 |
/// \brief Increase the priority of an item to the given value. |
|
| 315 |
/// |
|
| 316 |
/// This function increases the priority of an item to the given value. |
|
| 317 |
/// \param item The item. |
|
| 318 |
/// \param value The priority. |
|
| 319 |
/// \pre \e item must be stored in the heap with priority at most \e value. |
|
| 320 |
void increase (Item item, const Prio& value) {
|
|
| 321 |
erase(item); |
|
| 322 |
push(item,value); |
|
| 323 |
} |
|
| 324 |
|
|
| 325 |
/// \brief Return the state of an item. |
|
| 326 |
/// |
|
| 327 |
/// This method returns \c PRE_HEAP if the given item has never |
|
| 328 |
/// been in the heap, \c IN_HEAP if it is in the heap at the moment, |
|
| 329 |
/// and \c POST_HEAP otherwise. |
|
| 330 |
/// In the latter case it is possible that the item will get back |
|
| 331 |
/// to the heap again. |
|
| 332 |
/// \param item The item. |
|
| 333 |
State state(const Item &item) const {
|
|
| 334 |
int i=_iim[item]; |
|
| 335 |
if( i>=0 ) {
|
|
| 336 |
if( _data[i].in ) i=0; |
|
| 337 |
else i=-2; |
|
| 338 |
} |
|
| 339 |
return State(i); |
|
| 340 |
} |
|
| 341 |
|
|
| 342 |
/// \brief Set the state of an item in the heap. |
|
| 343 |
/// |
|
| 344 |
/// This function sets the state of the given item in the heap. |
|
| 345 |
/// It can be used to manually clear the heap when it is important |
|
| 346 |
/// to achive better time complexity. |
|
| 347 |
/// \param i The item. |
|
| 348 |
/// \param st The state. It should not be \c IN_HEAP. |
|
| 349 |
void state(const Item& i, State st) {
|
|
| 350 |
switch (st) {
|
|
| 351 |
case POST_HEAP: |
|
| 352 |
case PRE_HEAP: |
|
| 353 |
if (state(i) == IN_HEAP) erase(i); |
|
| 354 |
_iim[i]=st; |
|
| 355 |
break; |
|
| 356 |
case IN_HEAP: |
|
| 357 |
break; |
|
| 358 |
} |
|
| 359 |
} |
|
| 360 |
|
|
| 361 |
private: |
|
| 362 |
|
|
| 363 |
void cut(int a, int b) {
|
|
| 364 |
int child_a; |
|
| 365 |
switch (_data[a].degree) {
|
|
| 366 |
case 2: |
|
| 367 |
child_a = _data[_data[a].child].parent; |
|
| 368 |
if( _data[a].left_child ) {
|
|
| 369 |
_data[child_a].left_child=true; |
|
| 370 |
_data[b].child=child_a; |
|
| 371 |
_data[child_a].parent=_data[a].parent; |
|
| 372 |
} |
|
| 373 |
else {
|
|
| 374 |
_data[child_a].left_child=false; |
|
| 375 |
_data[child_a].parent=b; |
|
| 376 |
if( a!=_data[b].child ) |
|
| 377 |
_data[_data[b].child].parent=child_a; |
|
| 378 |
else |
|
| 379 |
_data[b].child=child_a; |
|
| 380 |
} |
|
| 381 |
--_data[a].degree; |
|
| 382 |
_data[_data[a].child].parent=a; |
|
| 383 |
break; |
|
| 384 |
|
|
| 385 |
case 1: |
|
| 386 |
child_a = _data[a].child; |
|
| 387 |
if( !_data[child_a].left_child ) {
|
|
| 388 |
--_data[a].degree; |
|
| 389 |
if( _data[a].left_child ) {
|
|
| 390 |
_data[child_a].left_child=true; |
|
| 391 |
_data[child_a].parent=_data[a].parent; |
|
| 392 |
_data[b].child=child_a; |
|
| 393 |
} |
|
| 394 |
else {
|
|
| 395 |
_data[child_a].left_child=false; |
|
| 396 |
_data[child_a].parent=b; |
|
| 397 |
if( a!=_data[b].child ) |
|
| 398 |
_data[_data[b].child].parent=child_a; |
|
| 399 |
else |
|
| 400 |
_data[b].child=child_a; |
|
| 401 |
} |
|
| 402 |
_data[a].child=-1; |
|
| 403 |
} |
|
| 404 |
else {
|
|
| 405 |
--_data[b].degree; |
|
| 406 |
if( _data[a].left_child ) {
|
|
| 407 |
_data[b].child = |
|
| 408 |
(1==_data[b].degree) ? _data[a].parent : -1; |
|
| 409 |
} else {
|
|
| 410 |
if (1==_data[b].degree) |
|
| 411 |
_data[_data[b].child].parent=b; |
|
| 412 |
else |
|
| 413 |
_data[b].child=-1; |
|
| 414 |
} |
|
| 415 |
} |
|
| 416 |
break; |
|
| 417 |
|
|
| 418 |
case 0: |
|
| 419 |
--_data[b].degree; |
|
| 420 |
if( _data[a].left_child ) {
|
|
| 421 |
_data[b].child = |
|
| 422 |
(0!=_data[b].degree) ? _data[a].parent : -1; |
|
| 423 |
} else {
|
|
| 424 |
if( 0!=_data[b].degree ) |
|
| 425 |
_data[_data[b].child].parent=b; |
|
| 426 |
else |
|
| 427 |
_data[b].child=-1; |
|
| 428 |
} |
|
| 429 |
break; |
|
| 430 |
} |
|
| 431 |
_data[a].parent=-1; |
|
| 432 |
_data[a].left_child=false; |
|
| 433 |
} |
|
| 434 |
|
|
| 435 |
void fuse(int a, int b) {
|
|
| 436 |
int child_a = _data[a].child; |
|
| 437 |
int child_b = _data[b].child; |
|
| 438 |
_data[a].child=b; |
|
| 439 |
_data[b].parent=a; |
|
| 440 |
_data[b].left_child=true; |
|
| 441 |
|
|
| 442 |
if( -1!=child_a ) {
|
|
| 443 |
_data[b].child=child_a; |
|
| 444 |
_data[child_a].parent=b; |
|
| 445 |
_data[child_a].left_child=false; |
|
| 446 |
++_data[b].degree; |
|
| 447 |
|
|
| 448 |
if( -1!=child_b ) {
|
|
| 449 |
_data[b].child=child_b; |
|
| 450 |
_data[child_b].parent=child_a; |
|
| 451 |
} |
|
| 452 |
} |
|
| 453 |
else { ++_data[a].degree; }
|
|
| 454 |
} |
|
| 455 |
|
|
| 456 |
class store {
|
|
| 457 |
friend class PairingHeap; |
|
| 458 |
|
|
| 459 |
Item name; |
|
| 460 |
int parent; |
|
| 461 |
int child; |
|
| 462 |
bool left_child; |
|
| 463 |
int degree; |
|
| 464 |
bool in; |
|
| 465 |
Prio prio; |
|
| 466 |
|
|
| 467 |
store() : parent(-1), child(-1), left_child(false), degree(0), in(true) {}
|
|
| 468 |
}; |
|
| 469 |
}; |
|
| 470 |
|
|
| 471 |
} //namespace lemon |
|
| 472 |
|
|
| 473 |
#endif //LEMON_PAIRING_HEAP_H |
|
| 474 |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_RADIX_HEAP_H |
|
| 20 |
#define LEMON_RADIX_HEAP_H |
|
| 21 |
|
|
| 22 |
///\ingroup heaps |
|
| 23 |
///\file |
|
| 24 |
///\brief Radix heap implementation. |
|
| 25 |
|
|
| 26 |
#include <vector> |
|
| 27 |
#include <lemon/error.h> |
|
| 28 |
|
|
| 29 |
namespace lemon {
|
|
| 30 |
|
|
| 31 |
|
|
| 32 |
/// \ingroup heaps |
|
| 33 |
/// |
|
| 34 |
/// \brief Radix heap data structure. |
|
| 35 |
/// |
|
| 36 |
/// This class implements the \e radix \e heap data structure. |
|
| 37 |
/// It practically conforms to the \ref concepts::Heap "heap concept", |
|
| 38 |
/// but it has some limitations due its special implementation. |
|
| 39 |
/// The type of the priorities must be \c int and the priority of an |
|
| 40 |
/// item cannot be decreased under the priority of the last removed item. |
|
| 41 |
/// |
|
| 42 |
/// \tparam IM A read-writable item map with \c int values, used |
|
| 43 |
/// internally to handle the cross references. |
|
| 44 |
template <typename IM> |
|
| 45 |
class RadixHeap {
|
|
| 46 |
|
|
| 47 |
public: |
|
| 48 |
|
|
| 49 |
/// Type of the item-int map. |
|
| 50 |
typedef IM ItemIntMap; |
|
| 51 |
/// Type of the priorities. |
|
| 52 |
typedef int Prio; |
|
| 53 |
/// Type of the items stored in the heap. |
|
| 54 |
typedef typename ItemIntMap::Key Item; |
|
| 55 |
|
|
| 56 |
/// \brief Exception thrown by RadixHeap. |
|
| 57 |
/// |
|
| 58 |
/// This exception is thrown when an item is inserted into a |
|
| 59 |
/// RadixHeap with a priority smaller than the last erased one. |
|
| 60 |
/// \see RadixHeap |
|
| 61 |
class PriorityUnderflowError : public Exception {
|
|
| 62 |
public: |
|
| 63 |
virtual const char* what() const throw() {
|
|
| 64 |
return "lemon::RadixHeap::PriorityUnderflowError"; |
|
| 65 |
} |
|
| 66 |
}; |
|
| 67 |
|
|
| 68 |
/// \brief Type to represent the states of the items. |
|
| 69 |
/// |
|
| 70 |
/// Each item has a state associated to it. It can be "in heap", |
|
| 71 |
/// "pre-heap" or "post-heap". The latter two are indifferent from the |
|
| 72 |
/// heap's point of view, but may be useful to the user. |
|
| 73 |
/// |
|
| 74 |
/// The item-int map must be initialized in such way that it assigns |
|
| 75 |
/// \c PRE_HEAP (<tt>-1</tt>) to any element to be put in the heap. |
|
| 76 |
enum State {
|
|
| 77 |
IN_HEAP = 0, ///< = 0. |
|
| 78 |
PRE_HEAP = -1, ///< = -1. |
|
| 79 |
POST_HEAP = -2 ///< = -2. |
|
| 80 |
}; |
|
| 81 |
|
|
| 82 |
private: |
|
| 83 |
|
|
| 84 |
struct RadixItem {
|
|
| 85 |
int prev, next, box; |
|
| 86 |
Item item; |
|
| 87 |
int prio; |
|
| 88 |
RadixItem(Item _item, int _prio) : item(_item), prio(_prio) {}
|
|
| 89 |
}; |
|
| 90 |
|
|
| 91 |
struct RadixBox {
|
|
| 92 |
int first; |
|
| 93 |
int min, size; |
|
| 94 |
RadixBox(int _min, int _size) : first(-1), min(_min), size(_size) {}
|
|
| 95 |
}; |
|
| 96 |
|
|
| 97 |
std::vector<RadixItem> _data; |
|
| 98 |
std::vector<RadixBox> _boxes; |
|
| 99 |
|
|
| 100 |
ItemIntMap &_iim; |
|
| 101 |
|
|
| 102 |
public: |
|
| 103 |
|
|
| 104 |
/// \brief Constructor. |
|
| 105 |
/// |
|
| 106 |
/// Constructor. |
|
| 107 |
/// \param map A map that assigns \c int values to the items. |
|
| 108 |
/// It is used internally to handle the cross references. |
|
| 109 |
/// The assigned value must be \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 110 |
/// \param minimum The initial minimum value of the heap. |
|
| 111 |
/// \param capacity The initial capacity of the heap. |
|
| 112 |
RadixHeap(ItemIntMap &map, int minimum = 0, int capacity = 0) |
|
| 113 |
: _iim(map) |
|
| 114 |
{
|
|
| 115 |
_boxes.push_back(RadixBox(minimum, 1)); |
|
| 116 |
_boxes.push_back(RadixBox(minimum + 1, 1)); |
|
| 117 |
while (lower(_boxes.size() - 1, capacity + minimum - 1)) {
|
|
| 118 |
extend(); |
|
| 119 |
} |
|
| 120 |
} |
|
| 121 |
|
|
| 122 |
/// \brief The number of items stored in the heap. |
|
| 123 |
/// |
|
| 124 |
/// This function returns the number of items stored in the heap. |
|
| 125 |
int size() const { return _data.size(); }
|
|
| 126 |
|
|
| 127 |
/// \brief Check if the heap is empty. |
|
| 128 |
/// |
|
| 129 |
/// This function returns \c true if the heap is empty. |
|
| 130 |
bool empty() const { return _data.empty(); }
|
|
| 131 |
|
|
| 132 |
/// \brief Make the heap empty. |
|
| 133 |
/// |
|
| 134 |
/// This functon makes the heap empty. |
|
| 135 |
/// It does not change the cross reference map. If you want to reuse |
|
| 136 |
/// a heap that is not surely empty, you should first clear it and |
|
| 137 |
/// then you should set the cross reference map to \c PRE_HEAP |
|
| 138 |
/// for each item. |
|
| 139 |
/// \param minimum The minimum value of the heap. |
|
| 140 |
/// \param capacity The capacity of the heap. |
|
| 141 |
void clear(int minimum = 0, int capacity = 0) {
|
|
| 142 |
_data.clear(); _boxes.clear(); |
|
| 143 |
_boxes.push_back(RadixBox(minimum, 1)); |
|
| 144 |
_boxes.push_back(RadixBox(minimum + 1, 1)); |
|
| 145 |
while (lower(_boxes.size() - 1, capacity + minimum - 1)) {
|
|
| 146 |
extend(); |
|
| 147 |
} |
|
| 148 |
} |
|
| 149 |
|
|
| 150 |
private: |
|
| 151 |
|
|
| 152 |
bool upper(int box, Prio pr) {
|
|
| 153 |
return pr < _boxes[box].min; |
|
| 154 |
} |
|
| 155 |
|
|
| 156 |
bool lower(int box, Prio pr) {
|
|
| 157 |
return pr >= _boxes[box].min + _boxes[box].size; |
|
| 158 |
} |
|
| 159 |
|
|
| 160 |
// Remove item from the box list |
|
| 161 |
void remove(int index) {
|
|
| 162 |
if (_data[index].prev >= 0) {
|
|
| 163 |
_data[_data[index].prev].next = _data[index].next; |
|
| 164 |
} else {
|
|
| 165 |
_boxes[_data[index].box].first = _data[index].next; |
|
| 166 |
} |
|
| 167 |
if (_data[index].next >= 0) {
|
|
| 168 |
_data[_data[index].next].prev = _data[index].prev; |
|
| 169 |
} |
|
| 170 |
} |
|
| 171 |
|
|
| 172 |
// Insert item into the box list |
|
| 173 |
void insert(int box, int index) {
|
|
| 174 |
if (_boxes[box].first == -1) {
|
|
| 175 |
_boxes[box].first = index; |
|
| 176 |
_data[index].next = _data[index].prev = -1; |
|
| 177 |
} else {
|
|
| 178 |
_data[index].next = _boxes[box].first; |
|
| 179 |
_data[_boxes[box].first].prev = index; |
|
| 180 |
_data[index].prev = -1; |
|
| 181 |
_boxes[box].first = index; |
|
| 182 |
} |
|
| 183 |
_data[index].box = box; |
|
| 184 |
} |
|
| 185 |
|
|
| 186 |
// Add a new box to the box list |
|
| 187 |
void extend() {
|
|
| 188 |
int min = _boxes.back().min + _boxes.back().size; |
|
| 189 |
int bs = 2 * _boxes.back().size; |
|
| 190 |
_boxes.push_back(RadixBox(min, bs)); |
|
| 191 |
} |
|
| 192 |
|
|
| 193 |
// Move an item up into the proper box. |
|
| 194 |
void bubbleUp(int index) {
|
|
| 195 |
if (!lower(_data[index].box, _data[index].prio)) return; |
|
| 196 |
remove(index); |
|
| 197 |
int box = findUp(_data[index].box, _data[index].prio); |
|
| 198 |
insert(box, index); |
|
| 199 |
} |
|
| 200 |
|
|
| 201 |
// Find up the proper box for the item with the given priority |
|
| 202 |
int findUp(int start, int pr) {
|
|
| 203 |
while (lower(start, pr)) {
|
|
| 204 |
if (++start == int(_boxes.size())) {
|
|
| 205 |
extend(); |
|
| 206 |
} |
|
| 207 |
} |
|
| 208 |
return start; |
|
| 209 |
} |
|
| 210 |
|
|
| 211 |
// Move an item down into the proper box |
|
| 212 |
void bubbleDown(int index) {
|
|
| 213 |
if (!upper(_data[index].box, _data[index].prio)) return; |
|
| 214 |
remove(index); |
|
| 215 |
int box = findDown(_data[index].box, _data[index].prio); |
|
| 216 |
insert(box, index); |
|
| 217 |
} |
|
| 218 |
|
|
| 219 |
// Find down the proper box for the item with the given priority |
|
| 220 |
int findDown(int start, int pr) {
|
|
| 221 |
while (upper(start, pr)) {
|
|
| 222 |
if (--start < 0) throw PriorityUnderflowError(); |
|
| 223 |
} |
|
| 224 |
return start; |
|
| 225 |
} |
|
| 226 |
|
|
| 227 |
// Find the first non-empty box |
|
| 228 |
int findFirst() {
|
|
| 229 |
int first = 0; |
|
| 230 |
while (_boxes[first].first == -1) ++first; |
|
| 231 |
return first; |
|
| 232 |
} |
|
| 233 |
|
|
| 234 |
// Gives back the minimum priority of the given box |
|
| 235 |
int minValue(int box) {
|
|
| 236 |
int min = _data[_boxes[box].first].prio; |
|
| 237 |
for (int k = _boxes[box].first; k != -1; k = _data[k].next) {
|
|
| 238 |
if (_data[k].prio < min) min = _data[k].prio; |
|
| 239 |
} |
|
| 240 |
return min; |
|
| 241 |
} |
|
| 242 |
|
|
| 243 |
// Rearrange the items of the heap and make the first box non-empty |
|
| 244 |
void moveDown() {
|
|
| 245 |
int box = findFirst(); |
|
| 246 |
if (box == 0) return; |
|
| 247 |
int min = minValue(box); |
|
| 248 |
for (int i = 0; i <= box; ++i) {
|
|
| 249 |
_boxes[i].min = min; |
|
| 250 |
min += _boxes[i].size; |
|
| 251 |
} |
|
| 252 |
int curr = _boxes[box].first, next; |
|
| 253 |
while (curr != -1) {
|
|
| 254 |
next = _data[curr].next; |
|
| 255 |
bubbleDown(curr); |
|
| 256 |
curr = next; |
|
| 257 |
} |
|
| 258 |
} |
|
| 259 |
|
|
| 260 |
void relocateLast(int index) {
|
|
| 261 |
if (index != int(_data.size()) - 1) {
|
|
| 262 |
_data[index] = _data.back(); |
|
| 263 |
if (_data[index].prev != -1) {
|
|
| 264 |
_data[_data[index].prev].next = index; |
|
| 265 |
} else {
|
|
| 266 |
_boxes[_data[index].box].first = index; |
|
| 267 |
} |
|
| 268 |
if (_data[index].next != -1) {
|
|
| 269 |
_data[_data[index].next].prev = index; |
|
| 270 |
} |
|
| 271 |
_iim[_data[index].item] = index; |
|
| 272 |
} |
|
| 273 |
_data.pop_back(); |
|
| 274 |
} |
|
| 275 |
|
|
| 276 |
public: |
|
| 277 |
|
|
| 278 |
/// \brief Insert an item into the heap with the given priority. |
|
| 279 |
/// |
|
| 280 |
/// This function inserts the given item into the heap with the |
|
| 281 |
/// given priority. |
|
| 282 |
/// \param i The item to insert. |
|
| 283 |
/// \param p The priority of the item. |
|
| 284 |
/// \pre \e i must not be stored in the heap. |
|
| 285 |
/// \warning This method may throw an \c UnderFlowPriorityException. |
|
| 286 |
void push(const Item &i, const Prio &p) {
|
|
| 287 |
int n = _data.size(); |
|
| 288 |
_iim.set(i, n); |
|
| 289 |
_data.push_back(RadixItem(i, p)); |
|
| 290 |
while (lower(_boxes.size() - 1, p)) {
|
|
| 291 |
extend(); |
|
| 292 |
} |
|
| 293 |
int box = findDown(_boxes.size() - 1, p); |
|
| 294 |
insert(box, n); |
|
| 295 |
} |
|
| 296 |
|
|
| 297 |
/// \brief Return the item having minimum priority. |
|
| 298 |
/// |
|
| 299 |
/// This function returns the item having minimum priority. |
|
| 300 |
/// \pre The heap must be non-empty. |
|
| 301 |
Item top() const {
|
|
| 302 |
const_cast<RadixHeap<ItemIntMap>&>(*this).moveDown(); |
|
| 303 |
return _data[_boxes[0].first].item; |
|
| 304 |
} |
|
| 305 |
|
|
| 306 |
/// \brief The minimum priority. |
|
| 307 |
/// |
|
| 308 |
/// This function returns the minimum priority. |
|
| 309 |
/// \pre The heap must be non-empty. |
|
| 310 |
Prio prio() const {
|
|
| 311 |
const_cast<RadixHeap<ItemIntMap>&>(*this).moveDown(); |
|
| 312 |
return _data[_boxes[0].first].prio; |
|
| 313 |
} |
|
| 314 |
|
|
| 315 |
/// \brief Remove the item having minimum priority. |
|
| 316 |
/// |
|
| 317 |
/// This function removes the item having minimum priority. |
|
| 318 |
/// \pre The heap must be non-empty. |
|
| 319 |
void pop() {
|
|
| 320 |
moveDown(); |
|
| 321 |
int index = _boxes[0].first; |
|
| 322 |
_iim[_data[index].item] = POST_HEAP; |
|
| 323 |
remove(index); |
|
| 324 |
relocateLast(index); |
|
| 325 |
} |
|
| 326 |
|
|
| 327 |
/// \brief Remove the given item from the heap. |
|
| 328 |
/// |
|
| 329 |
/// This function removes the given item from the heap if it is |
|
| 330 |
/// already stored. |
|
| 331 |
/// \param i The item to delete. |
|
| 332 |
/// \pre \e i must be in the heap. |
|
| 333 |
void erase(const Item &i) {
|
|
| 334 |
int index = _iim[i]; |
|
| 335 |
_iim[i] = POST_HEAP; |
|
| 336 |
remove(index); |
|
| 337 |
relocateLast(index); |
|
| 338 |
} |
|
| 339 |
|
|
| 340 |
/// \brief The priority of the given item. |
|
| 341 |
/// |
|
| 342 |
/// This function returns the priority of the given item. |
|
| 343 |
/// \param i The item. |
|
| 344 |
/// \pre \e i must be in the heap. |
|
| 345 |
Prio operator[](const Item &i) const {
|
|
| 346 |
int idx = _iim[i]; |
|
| 347 |
return _data[idx].prio; |
|
| 348 |
} |
|
| 349 |
|
|
| 350 |
/// \brief Set the priority of an item or insert it, if it is |
|
| 351 |
/// not stored in the heap. |
|
| 352 |
/// |
|
| 353 |
/// This method sets the priority of the given item if it is |
|
| 354 |
/// already stored in the heap. Otherwise it inserts the given |
|
| 355 |
/// item into the heap with the given priority. |
|
| 356 |
/// \param i The item. |
|
| 357 |
/// \param p The priority. |
|
| 358 |
/// \pre \e i must be in the heap. |
|
| 359 |
/// \warning This method may throw an \c UnderFlowPriorityException. |
|
| 360 |
void set(const Item &i, const Prio &p) {
|
|
| 361 |
int idx = _iim[i]; |
|
| 362 |
if( idx < 0 ) {
|
|
| 363 |
push(i, p); |
|
| 364 |
} |
|
| 365 |
else if( p >= _data[idx].prio ) {
|
|
| 366 |
_data[idx].prio = p; |
|
| 367 |
bubbleUp(idx); |
|
| 368 |
} else {
|
|
| 369 |
_data[idx].prio = p; |
|
| 370 |
bubbleDown(idx); |
|
| 371 |
} |
|
| 372 |
} |
|
| 373 |
|
|
| 374 |
/// \brief Decrease the priority of an item to the given value. |
|
| 375 |
/// |
|
| 376 |
/// This function decreases the priority of an item to the given value. |
|
| 377 |
/// \param i The item. |
|
| 378 |
/// \param p The priority. |
|
| 379 |
/// \pre \e i must be stored in the heap with priority at least \e p. |
|
| 380 |
/// \warning This method may throw an \c UnderFlowPriorityException. |
|
| 381 |
void decrease(const Item &i, const Prio &p) {
|
|
| 382 |
int idx = _iim[i]; |
|
| 383 |
_data[idx].prio = p; |
|
| 384 |
bubbleDown(idx); |
|
| 385 |
} |
|
| 386 |
|
|
| 387 |
/// \brief Increase the priority of an item to the given value. |
|
| 388 |
/// |
|
| 389 |
/// This function increases the priority of an item to the given value. |
|
| 390 |
/// \param i The item. |
|
| 391 |
/// \param p The priority. |
|
| 392 |
/// \pre \e i must be stored in the heap with priority at most \e p. |
|
| 393 |
void increase(const Item &i, const Prio &p) {
|
|
| 394 |
int idx = _iim[i]; |
|
| 395 |
_data[idx].prio = p; |
|
| 396 |
bubbleUp(idx); |
|
| 397 |
} |
|
| 398 |
|
|
| 399 |
/// \brief Return the state of an item. |
|
| 400 |
/// |
|
| 401 |
/// This method returns \c PRE_HEAP if the given item has never |
|
| 402 |
/// been in the heap, \c IN_HEAP if it is in the heap at the moment, |
|
| 403 |
/// and \c POST_HEAP otherwise. |
|
| 404 |
/// In the latter case it is possible that the item will get back |
|
| 405 |
/// to the heap again. |
|
| 406 |
/// \param i The item. |
|
| 407 |
State state(const Item &i) const {
|
|
| 408 |
int s = _iim[i]; |
|
| 409 |
if( s >= 0 ) s = 0; |
|
| 410 |
return State(s); |
|
| 411 |
} |
|
| 412 |
|
|
| 413 |
/// \brief Set the state of an item in the heap. |
|
| 414 |
/// |
|
| 415 |
/// This function sets the state of the given item in the heap. |
|
| 416 |
/// It can be used to manually clear the heap when it is important |
|
| 417 |
/// to achive better time complexity. |
|
| 418 |
/// \param i The item. |
|
| 419 |
/// \param st The state. It should not be \c IN_HEAP. |
|
| 420 |
void state(const Item& i, State st) {
|
|
| 421 |
switch (st) {
|
|
| 422 |
case POST_HEAP: |
|
| 423 |
case PRE_HEAP: |
|
| 424 |
if (state(i) == IN_HEAP) {
|
|
| 425 |
erase(i); |
|
| 426 |
} |
|
| 427 |
_iim[i] = st; |
|
| 428 |
break; |
|
| 429 |
case IN_HEAP: |
|
| 430 |
break; |
|
| 431 |
} |
|
| 432 |
} |
|
| 433 |
|
|
| 434 |
}; // class RadixHeap |
|
| 435 |
|
|
| 436 |
} // namespace lemon |
|
| 437 |
|
|
| 438 |
#endif // LEMON_RADIX_HEAP_H |
| 1 |
/* -*- C++ -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2008 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_STATIC_GRAPH_H |
|
| 20 |
#define LEMON_STATIC_GRAPH_H |
|
| 21 |
|
|
| 22 |
///\ingroup graphs |
|
| 23 |
///\file |
|
| 24 |
///\brief StaticDigraph class. |
|
| 25 |
|
|
| 26 |
#include <lemon/core.h> |
|
| 27 |
#include <lemon/bits/graph_extender.h> |
|
| 28 |
|
|
| 29 |
namespace lemon {
|
|
| 30 |
|
|
| 31 |
class StaticDigraphBase {
|
|
| 32 |
public: |
|
| 33 |
|
|
| 34 |
StaticDigraphBase() |
|
| 35 |
: built(false), node_num(0), arc_num(0), |
|
| 36 |
node_first_out(NULL), node_first_in(NULL), |
|
| 37 |
arc_source(NULL), arc_target(NULL), |
|
| 38 |
arc_next_in(NULL), arc_next_out(NULL) {}
|
|
| 39 |
|
|
| 40 |
~StaticDigraphBase() {
|
|
| 41 |
if (built) {
|
|
| 42 |
delete[] node_first_out; |
|
| 43 |
delete[] node_first_in; |
|
| 44 |
delete[] arc_source; |
|
| 45 |
delete[] arc_target; |
|
| 46 |
delete[] arc_next_out; |
|
| 47 |
delete[] arc_next_in; |
|
| 48 |
} |
|
| 49 |
} |
|
| 50 |
|
|
| 51 |
class Node {
|
|
| 52 |
friend class StaticDigraphBase; |
|
| 53 |
protected: |
|
| 54 |
int id; |
|
| 55 |
Node(int _id) : id(_id) {}
|
|
| 56 |
public: |
|
| 57 |
Node() {}
|
|
| 58 |
Node (Invalid) : id(-1) {}
|
|
| 59 |
bool operator==(const Node& node) const { return id == node.id; }
|
|
| 60 |
bool operator!=(const Node& node) const { return id != node.id; }
|
|
| 61 |
bool operator<(const Node& node) const { return id < node.id; }
|
|
| 62 |
}; |
|
| 63 |
|
|
| 64 |
class Arc {
|
|
| 65 |
friend class StaticDigraphBase; |
|
| 66 |
protected: |
|
| 67 |
int id; |
|
| 68 |
Arc(int _id) : id(_id) {}
|
|
| 69 |
public: |
|
| 70 |
Arc() { }
|
|
| 71 |
Arc (Invalid) : id(-1) {}
|
|
| 72 |
bool operator==(const Arc& arc) const { return id == arc.id; }
|
|
| 73 |
bool operator!=(const Arc& arc) const { return id != arc.id; }
|
|
| 74 |
bool operator<(const Arc& arc) const { return id < arc.id; }
|
|
| 75 |
}; |
|
| 76 |
|
|
| 77 |
Node source(const Arc& e) const { return Node(arc_source[e.id]); }
|
|
| 78 |
Node target(const Arc& e) const { return Node(arc_target[e.id]); }
|
|
| 79 |
|
|
| 80 |
void first(Node& n) const { n.id = node_num - 1; }
|
|
| 81 |
static void next(Node& n) { --n.id; }
|
|
| 82 |
|
|
| 83 |
void first(Arc& e) const { e.id = arc_num - 1; }
|
|
| 84 |
static void next(Arc& e) { --e.id; }
|
|
| 85 |
|
|
| 86 |
void firstOut(Arc& e, const Node& n) const {
|
|
| 87 |
e.id = node_first_out[n.id] != node_first_out[n.id + 1] ? |
|
| 88 |
node_first_out[n.id] : -1; |
|
| 89 |
} |
|
| 90 |
void nextOut(Arc& e) const { e.id = arc_next_out[e.id]; }
|
|
| 91 |
|
|
| 92 |
void firstIn(Arc& e, const Node& n) const { e.id = node_first_in[n.id]; }
|
|
| 93 |
void nextIn(Arc& e) const { e.id = arc_next_in[e.id]; }
|
|
| 94 |
|
|
| 95 |
static int id(const Node& n) { return n.id; }
|
|
| 96 |
static Node nodeFromId(int id) { return Node(id); }
|
|
| 97 |
int maxNodeId() const { return node_num - 1; }
|
|
| 98 |
|
|
| 99 |
static int id(const Arc& e) { return e.id; }
|
|
| 100 |
static Arc arcFromId(int id) { return Arc(id); }
|
|
| 101 |
int maxArcId() const { return arc_num - 1; }
|
|
| 102 |
|
|
| 103 |
typedef True NodeNumTag; |
|
| 104 |
typedef True ArcNumTag; |
|
| 105 |
|
|
| 106 |
int nodeNum() const { return node_num; }
|
|
| 107 |
int arcNum() const { return arc_num; }
|
|
| 108 |
|
|
| 109 |
private: |
|
| 110 |
|
|
| 111 |
template <typename Digraph, typename NodeRefMap> |
|
| 112 |
class ArcLess {
|
|
| 113 |
public: |
|
| 114 |
typedef typename Digraph::Arc Arc; |
|
| 115 |
|
|
| 116 |
ArcLess(const Digraph &_graph, const NodeRefMap& _nodeRef) |
|
| 117 |
: digraph(_graph), nodeRef(_nodeRef) {}
|
|
| 118 |
|
|
| 119 |
bool operator()(const Arc& left, const Arc& right) const {
|
|
| 120 |
return nodeRef[digraph.target(left)] < nodeRef[digraph.target(right)]; |
|
| 121 |
} |
|
| 122 |
private: |
|
| 123 |
const Digraph& digraph; |
|
| 124 |
const NodeRefMap& nodeRef; |
|
| 125 |
}; |
|
| 126 |
|
|
| 127 |
public: |
|
| 128 |
|
|
| 129 |
typedef True BuildTag; |
|
| 130 |
|
|
| 131 |
void clear() {
|
|
| 132 |
if (built) {
|
|
| 133 |
delete[] node_first_out; |
|
| 134 |
delete[] node_first_in; |
|
| 135 |
delete[] arc_source; |
|
| 136 |
delete[] arc_target; |
|
| 137 |
delete[] arc_next_out; |
|
| 138 |
delete[] arc_next_in; |
|
| 139 |
} |
|
| 140 |
built = false; |
|
| 141 |
node_num = 0; |
|
| 142 |
arc_num = 0; |
|
| 143 |
} |
|
| 144 |
|
|
| 145 |
template <typename Digraph, typename NodeRefMap, typename ArcRefMap> |
|
| 146 |
void build(const Digraph& digraph, NodeRefMap& nodeRef, ArcRefMap& arcRef) {
|
|
| 147 |
typedef typename Digraph::Node GNode; |
|
| 148 |
typedef typename Digraph::Arc GArc; |
|
| 149 |
|
|
| 150 |
built = true; |
|
| 151 |
|
|
| 152 |
node_num = countNodes(digraph); |
|
| 153 |
arc_num = countArcs(digraph); |
|
| 154 |
|
|
| 155 |
node_first_out = new int[node_num + 1]; |
|
| 156 |
node_first_in = new int[node_num]; |
|
| 157 |
|
|
| 158 |
arc_source = new int[arc_num]; |
|
| 159 |
arc_target = new int[arc_num]; |
|
| 160 |
arc_next_out = new int[arc_num]; |
|
| 161 |
arc_next_in = new int[arc_num]; |
|
| 162 |
|
|
| 163 |
int node_index = 0; |
|
| 164 |
for (typename Digraph::NodeIt n(digraph); n != INVALID; ++n) {
|
|
| 165 |
nodeRef[n] = Node(node_index); |
|
| 166 |
node_first_in[node_index] = -1; |
|
| 167 |
++node_index; |
|
| 168 |
} |
|
| 169 |
|
|
| 170 |
ArcLess<Digraph, NodeRefMap> arcLess(digraph, nodeRef); |
|
| 171 |
|
|
| 172 |
int arc_index = 0; |
|
| 173 |
for (typename Digraph::NodeIt n(digraph); n != INVALID; ++n) {
|
|
| 174 |
int source = nodeRef[n].id; |
|
| 175 |
std::vector<GArc> arcs; |
|
| 176 |
for (typename Digraph::OutArcIt e(digraph, n); e != INVALID; ++e) {
|
|
| 177 |
arcs.push_back(e); |
|
| 178 |
} |
|
| 179 |
if (!arcs.empty()) {
|
|
| 180 |
node_first_out[source] = arc_index; |
|
| 181 |
std::sort(arcs.begin(), arcs.end(), arcLess); |
|
| 182 |
for (typename std::vector<GArc>::iterator it = arcs.begin(); |
|
| 183 |
it != arcs.end(); ++it) {
|
|
| 184 |
int target = nodeRef[digraph.target(*it)].id; |
|
| 185 |
arcRef[*it] = Arc(arc_index); |
|
| 186 |
arc_source[arc_index] = source; |
|
| 187 |
arc_target[arc_index] = target; |
|
| 188 |
arc_next_in[arc_index] = node_first_in[target]; |
|
| 189 |
node_first_in[target] = arc_index; |
|
| 190 |
arc_next_out[arc_index] = arc_index + 1; |
|
| 191 |
++arc_index; |
|
| 192 |
} |
|
| 193 |
arc_next_out[arc_index - 1] = -1; |
|
| 194 |
} else {
|
|
| 195 |
node_first_out[source] = arc_index; |
|
| 196 |
} |
|
| 197 |
} |
|
| 198 |
node_first_out[node_num] = arc_num; |
|
| 199 |
} |
|
| 200 |
|
|
| 201 |
template <typename ArcListIterator> |
|
| 202 |
void build(int n, ArcListIterator first, ArcListIterator last) {
|
|
| 203 |
built = true; |
|
| 204 |
|
|
| 205 |
node_num = n; |
|
| 206 |
arc_num = std::distance(first, last); |
|
| 207 |
|
|
| 208 |
node_first_out = new int[node_num + 1]; |
|
| 209 |
node_first_in = new int[node_num]; |
|
| 210 |
|
|
| 211 |
arc_source = new int[arc_num]; |
|
| 212 |
arc_target = new int[arc_num]; |
|
| 213 |
arc_next_out = new int[arc_num]; |
|
| 214 |
arc_next_in = new int[arc_num]; |
|
| 215 |
|
|
| 216 |
for (int i = 0; i != node_num; ++i) {
|
|
| 217 |
node_first_in[i] = -1; |
|
| 218 |
} |
|
| 219 |
|
|
| 220 |
int arc_index = 0; |
|
| 221 |
for (int i = 0; i != node_num; ++i) {
|
|
| 222 |
node_first_out[i] = arc_index; |
|
| 223 |
for ( ; first != last && (*first).first == i; ++first) {
|
|
| 224 |
int j = (*first).second; |
|
| 225 |
LEMON_ASSERT(j >= 0 && j < node_num, |
|
| 226 |
"Wrong arc list for StaticDigraph::build()"); |
|
| 227 |
arc_source[arc_index] = i; |
|
| 228 |
arc_target[arc_index] = j; |
|
| 229 |
arc_next_in[arc_index] = node_first_in[j]; |
|
| 230 |
node_first_in[j] = arc_index; |
|
| 231 |
arc_next_out[arc_index] = arc_index + 1; |
|
| 232 |
++arc_index; |
|
| 233 |
} |
|
| 234 |
if (arc_index > node_first_out[i]) |
|
| 235 |
arc_next_out[arc_index - 1] = -1; |
|
| 236 |
} |
|
| 237 |
LEMON_ASSERT(first == last, |
|
| 238 |
"Wrong arc list for StaticDigraph::build()"); |
|
| 239 |
node_first_out[node_num] = arc_num; |
|
| 240 |
} |
|
| 241 |
|
|
| 242 |
protected: |
|
| 243 |
|
|
| 244 |
void fastFirstOut(Arc& e, const Node& n) const {
|
|
| 245 |
e.id = node_first_out[n.id]; |
|
| 246 |
} |
|
| 247 |
|
|
| 248 |
static void fastNextOut(Arc& e) {
|
|
| 249 |
++e.id; |
|
| 250 |
} |
|
| 251 |
void fastLastOut(Arc& e, const Node& n) const {
|
|
| 252 |
e.id = node_first_out[n.id + 1]; |
|
| 253 |
} |
|
| 254 |
|
|
| 255 |
protected: |
|
| 256 |
bool built; |
|
| 257 |
int node_num; |
|
| 258 |
int arc_num; |
|
| 259 |
int *node_first_out; |
|
| 260 |
int *node_first_in; |
|
| 261 |
int *arc_source; |
|
| 262 |
int *arc_target; |
|
| 263 |
int *arc_next_in; |
|
| 264 |
int *arc_next_out; |
|
| 265 |
}; |
|
| 266 |
|
|
| 267 |
typedef DigraphExtender<StaticDigraphBase> ExtendedStaticDigraphBase; |
|
| 268 |
|
|
| 269 |
|
|
| 270 |
/// \ingroup graphs |
|
| 271 |
/// |
|
| 272 |
/// \brief A static directed graph class. |
|
| 273 |
/// |
|
| 274 |
/// \ref StaticDigraph is a highly efficient digraph implementation, |
|
| 275 |
/// but it is fully static. |
|
| 276 |
/// It stores only two \c int values for each node and only four \c int |
|
| 277 |
/// values for each arc. Moreover it provides faster item iteration than |
|
| 278 |
/// \ref ListDigraph and \ref SmartDigraph, especially using \c OutArcIt |
|
| 279 |
/// iterators, since its arcs are stored in an appropriate order. |
|
| 280 |
/// However it only provides build() and clear() functions and does not |
|
| 281 |
/// support any other modification of the digraph. |
|
| 282 |
/// |
|
| 283 |
/// Since this digraph structure is completely static, its nodes and arcs |
|
| 284 |
/// can be indexed with integers from the ranges <tt>[0..nodeNum()-1]</tt> |
|
| 285 |
/// and <tt>[0..arcNum()-1]</tt>, respectively. |
|
| 286 |
/// The index of an item is the same as its ID, it can be obtained |
|
| 287 |
/// using the corresponding \ref index() or \ref concepts::Digraph::id() |
|
| 288 |
/// "id()" function. A node or arc with a certain index can be obtained |
|
| 289 |
/// using node() or arc(). |
|
| 290 |
/// |
|
| 291 |
/// This type fully conforms to the \ref concepts::Digraph "Digraph concept". |
|
| 292 |
/// Most of its member functions and nested classes are documented |
|
| 293 |
/// only in the concept class. |
|
| 294 |
/// |
|
| 295 |
/// \sa concepts::Digraph |
|
| 296 |
class StaticDigraph : public ExtendedStaticDigraphBase {
|
|
| 297 |
public: |
|
| 298 |
|
|
| 299 |
typedef ExtendedStaticDigraphBase Parent; |
|
| 300 |
|
|
| 301 |
public: |
|
| 302 |
|
|
| 303 |
/// \brief Constructor |
|
| 304 |
/// |
|
| 305 |
/// Default constructor. |
|
| 306 |
StaticDigraph() : Parent() {}
|
|
| 307 |
|
|
| 308 |
/// \brief The node with the given index. |
|
| 309 |
/// |
|
| 310 |
/// This function returns the node with the given index. |
|
| 311 |
/// \sa index() |
|
| 312 |
static Node node(int ix) { return Parent::nodeFromId(ix); }
|
|
| 313 |
|
|
| 314 |
/// \brief The arc with the given index. |
|
| 315 |
/// |
|
| 316 |
/// This function returns the arc with the given index. |
|
| 317 |
/// \sa index() |
|
| 318 |
static Arc arc(int ix) { return Parent::arcFromId(ix); }
|
|
| 319 |
|
|
| 320 |
/// \brief The index of the given node. |
|
| 321 |
/// |
|
| 322 |
/// This function returns the index of the the given node. |
|
| 323 |
/// \sa node() |
|
| 324 |
static int index(Node node) { return Parent::id(node); }
|
|
| 325 |
|
|
| 326 |
/// \brief The index of the given arc. |
|
| 327 |
/// |
|
| 328 |
/// This function returns the index of the the given arc. |
|
| 329 |
/// \sa arc() |
|
| 330 |
static int index(Arc arc) { return Parent::id(arc); }
|
|
| 331 |
|
|
| 332 |
/// \brief Number of nodes. |
|
| 333 |
/// |
|
| 334 |
/// This function returns the number of nodes. |
|
| 335 |
int nodeNum() const { return node_num; }
|
|
| 336 |
|
|
| 337 |
/// \brief Number of arcs. |
|
| 338 |
/// |
|
| 339 |
/// This function returns the number of arcs. |
|
| 340 |
int arcNum() const { return arc_num; }
|
|
| 341 |
|
|
| 342 |
/// \brief Build the digraph copying another digraph. |
|
| 343 |
/// |
|
| 344 |
/// This function builds the digraph copying another digraph of any |
|
| 345 |
/// kind. It can be called more than once, but in such case, the whole |
|
| 346 |
/// structure and all maps will be cleared and rebuilt. |
|
| 347 |
/// |
|
| 348 |
/// This method also makes possible to copy a digraph to a StaticDigraph |
|
| 349 |
/// structure using \ref DigraphCopy. |
|
| 350 |
/// |
|
| 351 |
/// \param digraph An existing digraph to be copied. |
|
| 352 |
/// \param nodeRef The node references will be copied into this map. |
|
| 353 |
/// Its key type must be \c Digraph::Node and its value type must be |
|
| 354 |
/// \c StaticDigraph::Node. |
|
| 355 |
/// It must conform to the \ref concepts::ReadWriteMap "ReadWriteMap" |
|
| 356 |
/// concept. |
|
| 357 |
/// \param arcRef The arc references will be copied into this map. |
|
| 358 |
/// Its key type must be \c Digraph::Arc and its value type must be |
|
| 359 |
/// \c StaticDigraph::Arc. |
|
| 360 |
/// It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 361 |
/// |
|
| 362 |
/// \note If you do not need the arc references, then you could use |
|
| 363 |
/// \ref NullMap for the last parameter. However the node references |
|
| 364 |
/// are required by the function itself, thus they must be readable |
|
| 365 |
/// from the map. |
|
| 366 |
template <typename Digraph, typename NodeRefMap, typename ArcRefMap> |
|
| 367 |
void build(const Digraph& digraph, NodeRefMap& nodeRef, ArcRefMap& arcRef) {
|
|
| 368 |
if (built) Parent::clear(); |
|
| 369 |
Parent::build(digraph, nodeRef, arcRef); |
|
| 370 |
} |
|
| 371 |
|
|
| 372 |
/// \brief Build the digraph from an arc list. |
|
| 373 |
/// |
|
| 374 |
/// This function builds the digraph from the given arc list. |
|
| 375 |
/// It can be called more than once, but in such case, the whole |
|
| 376 |
/// structure and all maps will be cleared and rebuilt. |
|
| 377 |
/// |
|
| 378 |
/// The list of the arcs must be given in the range <tt>[begin, end)</tt> |
|
| 379 |
/// specified by STL compatible itartors whose \c value_type must be |
|
| 380 |
/// <tt>std::pair<int,int></tt>. |
|
| 381 |
/// Each arc must be specified by a pair of integer indices |
|
| 382 |
/// from the range <tt>[0..n-1]</tt>. <i>The pairs must be in a |
|
| 383 |
/// non-decreasing order with respect to their first values.</i> |
|
| 384 |
/// If the k-th pair in the list is <tt>(i,j)</tt>, then |
|
| 385 |
/// <tt>arc(k-1)</tt> will connect <tt>node(i)</tt> to <tt>node(j)</tt>. |
|
| 386 |
/// |
|
| 387 |
/// \param n The number of nodes. |
|
| 388 |
/// \param begin An iterator pointing to the beginning of the arc list. |
|
| 389 |
/// \param end An iterator pointing to the end of the arc list. |
|
| 390 |
/// |
|
| 391 |
/// For example, a simple digraph can be constructed like this. |
|
| 392 |
/// \code |
|
| 393 |
/// std::vector<std::pair<int,int> > arcs; |
|
| 394 |
/// arcs.push_back(std::make_pair(0,1)); |
|
| 395 |
/// arcs.push_back(std::make_pair(0,2)); |
|
| 396 |
/// arcs.push_back(std::make_pair(1,3)); |
|
| 397 |
/// arcs.push_back(std::make_pair(1,2)); |
|
| 398 |
/// arcs.push_back(std::make_pair(3,0)); |
|
| 399 |
/// StaticDigraph gr; |
|
| 400 |
/// gr.build(4, arcs.begin(), arcs.end()); |
|
| 401 |
/// \endcode |
|
| 402 |
template <typename ArcListIterator> |
|
| 403 |
void build(int n, ArcListIterator begin, ArcListIterator end) {
|
|
| 404 |
if (built) Parent::clear(); |
|
| 405 |
StaticDigraphBase::build(n, begin, end); |
|
| 406 |
notifier(Node()).build(); |
|
| 407 |
notifier(Arc()).build(); |
|
| 408 |
} |
|
| 409 |
|
|
| 410 |
/// \brief Clear the digraph. |
|
| 411 |
/// |
|
| 412 |
/// This function erases all nodes and arcs from the digraph. |
|
| 413 |
void clear() {
|
|
| 414 |
Parent::clear(); |
|
| 415 |
} |
|
| 416 |
|
|
| 417 |
protected: |
|
| 418 |
|
|
| 419 |
using Parent::fastFirstOut; |
|
| 420 |
using Parent::fastNextOut; |
|
| 421 |
using Parent::fastLastOut; |
|
| 422 |
|
|
| 423 |
public: |
|
| 424 |
|
|
| 425 |
class OutArcIt : public Arc {
|
|
| 426 |
public: |
|
| 427 |
|
|
| 428 |
OutArcIt() { }
|
|
| 429 |
|
|
| 430 |
OutArcIt(Invalid i) : Arc(i) { }
|
|
| 431 |
|
|
| 432 |
OutArcIt(const StaticDigraph& digraph, const Node& node) {
|
|
| 433 |
digraph.fastFirstOut(*this, node); |
|
| 434 |
digraph.fastLastOut(last, node); |
|
| 435 |
if (last == *this) *this = INVALID; |
|
| 436 |
} |
|
| 437 |
|
|
| 438 |
OutArcIt(const StaticDigraph& digraph, const Arc& arc) : Arc(arc) {
|
|
| 439 |
if (arc != INVALID) {
|
|
| 440 |
digraph.fastLastOut(last, digraph.source(arc)); |
|
| 441 |
} |
|
| 442 |
} |
|
| 443 |
|
|
| 444 |
OutArcIt& operator++() {
|
|
| 445 |
StaticDigraph::fastNextOut(*this); |
|
| 446 |
if (last == *this) *this = INVALID; |
|
| 447 |
return *this; |
|
| 448 |
} |
|
| 449 |
|
|
| 450 |
private: |
|
| 451 |
Arc last; |
|
| 452 |
}; |
|
| 453 |
|
|
| 454 |
Node baseNode(const OutArcIt &arc) const {
|
|
| 455 |
return Parent::source(static_cast<const Arc&>(arc)); |
|
| 456 |
} |
|
| 457 |
|
|
| 458 |
Node runningNode(const OutArcIt &arc) const {
|
|
| 459 |
return Parent::target(static_cast<const Arc&>(arc)); |
|
| 460 |
} |
|
| 461 |
|
|
| 462 |
Node baseNode(const InArcIt &arc) const {
|
|
| 463 |
return Parent::target(static_cast<const Arc&>(arc)); |
|
| 464 |
} |
|
| 465 |
|
|
| 466 |
Node runningNode(const InArcIt &arc) const {
|
|
| 467 |
return Parent::source(static_cast<const Arc&>(arc)); |
|
| 468 |
} |
|
| 469 |
|
|
| 470 |
}; |
|
| 471 |
|
|
| 472 |
} |
|
| 473 |
|
|
| 474 |
#endif |
| 1 |
AC_DEFUN([LX_CHECK_COIN], |
|
| 2 |
[ |
|
| 3 |
AC_ARG_WITH([coin], |
|
| 4 |
AS_HELP_STRING([--with-coin@<:@=PREFIX@:>@], [search for CLP under PREFIX or under the default search paths if PREFIX is not given @<:@default@:>@]) |
|
| 5 |
AS_HELP_STRING([--without-coin], [disable checking for CLP]), |
|
| 6 |
[], [with_coin=yes]) |
|
| 7 |
|
|
| 8 |
AC_ARG_WITH([coin-includedir], |
|
| 9 |
AS_HELP_STRING([--with-coin-includedir=DIR], [search for CLP headers in DIR]), |
|
| 10 |
[], [with_coin_includedir=no]) |
|
| 11 |
|
|
| 12 |
AC_ARG_WITH([coin-libdir], |
|
| 13 |
AS_HELP_STRING([--with-coin-libdir=DIR], [search for CLP libraries in DIR]), |
|
| 14 |
[], [with_coin_libdir=no]) |
|
| 15 |
|
|
| 16 |
lx_clp_found=no |
|
| 17 |
if test x"$with_coin" != x"no"; then |
|
| 18 |
AC_MSG_CHECKING([for CLP]) |
|
| 19 |
|
|
| 20 |
if test x"$with_coin_includedir" != x"no"; then |
|
| 21 |
CLP_CXXFLAGS="-I$with_coin_includedir" |
|
| 22 |
elif test x"$with_coin" != x"yes"; then |
|
| 23 |
CLP_CXXFLAGS="-I$with_coin/include" |
|
| 24 |
fi |
|
| 25 |
|
|
| 26 |
if test x"$with_coin_libdir" != x"no"; then |
|
| 27 |
CLP_LDFLAGS="-L$with_coin_libdir" |
|
| 28 |
elif test x"$with_coin" != x"yes"; then |
|
| 29 |
CLP_LDFLAGS="-L$with_coin/lib" |
|
| 30 |
fi |
|
| 31 |
CLP_LIBS="-lClp -lCoinUtils -lm" |
|
| 32 |
|
|
| 33 |
lx_save_cxxflags="$CXXFLAGS" |
|
| 34 |
lx_save_ldflags="$LDFLAGS" |
|
| 35 |
lx_save_libs="$LIBS" |
|
| 36 |
CXXFLAGS="$CLP_CXXFLAGS" |
|
| 37 |
LDFLAGS="$CLP_LDFLAGS" |
|
| 38 |
LIBS="$CLP_LIBS" |
|
| 39 |
|
|
| 40 |
lx_clp_test_prog=' |
|
| 41 |
#include <coin/ClpModel.hpp> |
|
| 42 |
|
|
| 43 |
int main(int argc, char** argv) |
|
| 44 |
{
|
|
| 45 |
ClpModel clp; |
|
| 46 |
return 0; |
|
| 47 |
}' |
|
| 48 |
|
|
| 49 |
AC_LANG_PUSH(C++) |
|
| 50 |
AC_LINK_IFELSE([$lx_clp_test_prog], [lx_clp_found=yes], [lx_clp_found=no]) |
|
| 51 |
AC_LANG_POP(C++) |
|
| 52 |
|
|
| 53 |
CXXFLAGS="$lx_save_cxxflags" |
|
| 54 |
LDFLAGS="$lx_save_ldflags" |
|
| 55 |
LIBS="$lx_save_libs" |
|
| 56 |
|
|
| 57 |
if test x"$lx_clp_found" = x"yes"; then |
|
| 58 |
AC_DEFINE([LEMON_HAVE_CLP], [1], [Define to 1 if you have CLP.]) |
|
| 59 |
lx_lp_found=yes |
|
| 60 |
AC_DEFINE([LEMON_HAVE_LP], [1], [Define to 1 if you have any LP solver.]) |
|
| 61 |
AC_MSG_RESULT([yes]) |
|
| 62 |
else |
|
| 63 |
CLP_CXXFLAGS="" |
|
| 64 |
CLP_LDFLAGS="" |
|
| 65 |
CLP_LIBS="" |
|
| 66 |
AC_MSG_RESULT([no]) |
|
| 67 |
fi |
|
| 68 |
fi |
|
| 69 |
CLP_LIBS="$CLP_LDFLAGS $CLP_LIBS" |
|
| 70 |
AC_SUBST(CLP_CXXFLAGS) |
|
| 71 |
AC_SUBST(CLP_LIBS) |
|
| 72 |
AM_CONDITIONAL([HAVE_CLP], [test x"$lx_clp_found" = x"yes"]) |
|
| 73 |
|
|
| 74 |
|
|
| 75 |
lx_cbc_found=no |
|
| 76 |
if test x"$lx_clp_found" = x"yes"; then |
|
| 77 |
if test x"$with_coin" != x"no"; then |
|
| 78 |
AC_MSG_CHECKING([for CBC]) |
|
| 79 |
|
|
| 80 |
if test x"$with_coin_includedir" != x"no"; then |
|
| 81 |
CBC_CXXFLAGS="-I$with_coin_includedir" |
|
| 82 |
elif test x"$with_coin" != x"yes"; then |
|
| 83 |
CBC_CXXFLAGS="-I$with_coin/include" |
|
| 84 |
fi |
|
| 85 |
|
|
| 86 |
if test x"$with_coin_libdir" != x"no"; then |
|
| 87 |
CBC_LDFLAGS="-L$with_coin_libdir" |
|
| 88 |
elif test x"$with_coin" != x"yes"; then |
|
| 89 |
CBC_LDFLAGS="-L$with_coin/lib" |
|
| 90 |
fi |
|
| 91 |
CBC_LIBS="-lOsi -lCbc -lCbcSolver -lClp -lOsiClp -lCoinUtils -lVol -lOsiVol -lCgl -lm -llapack -lblas" |
|
| 92 |
|
|
| 93 |
lx_save_cxxflags="$CXXFLAGS" |
|
| 94 |
lx_save_ldflags="$LDFLAGS" |
|
| 95 |
lx_save_libs="$LIBS" |
|
| 96 |
CXXFLAGS="$CBC_CXXFLAGS" |
|
| 97 |
LDFLAGS="$CBC_LDFLAGS" |
|
| 98 |
LIBS="$CBC_LIBS" |
|
| 99 |
|
|
| 100 |
lx_cbc_test_prog=' |
|
| 101 |
#include <coin/CbcModel.hpp> |
|
| 102 |
|
|
| 103 |
int main(int argc, char** argv) |
|
| 104 |
{
|
|
| 105 |
CbcModel cbc; |
|
| 106 |
return 0; |
|
| 107 |
}' |
|
| 108 |
|
|
| 109 |
AC_LANG_PUSH(C++) |
|
| 110 |
AC_LINK_IFELSE([$lx_cbc_test_prog], [lx_cbc_found=yes], [lx_cbc_found=no]) |
|
| 111 |
AC_LANG_POP(C++) |
|
| 112 |
|
|
| 113 |
CXXFLAGS="$lx_save_cxxflags" |
|
| 114 |
LDFLAGS="$lx_save_ldflags" |
|
| 115 |
LIBS="$lx_save_libs" |
|
| 116 |
|
|
| 117 |
if test x"$lx_cbc_found" = x"yes"; then |
|
| 118 |
AC_DEFINE([LEMON_HAVE_CBC], [1], [Define to 1 if you have CBC.]) |
|
| 119 |
lx_lp_found=yes |
|
| 120 |
AC_DEFINE([LEMON_HAVE_LP], [1], [Define to 1 if you have any LP solver.]) |
|
| 121 |
lx_mip_found=yes |
|
| 122 |
AC_DEFINE([LEMON_HAVE_MIP], [1], [Define to 1 if you have any MIP solver.]) |
|
| 123 |
AC_MSG_RESULT([yes]) |
|
| 124 |
else |
|
| 125 |
CBC_CXXFLAGS="" |
|
| 126 |
CBC_LDFLAGS="" |
|
| 127 |
CBC_LIBS="" |
|
| 128 |
AC_MSG_RESULT([no]) |
|
| 129 |
fi |
|
| 130 |
fi |
|
| 131 |
fi |
|
| 132 |
CBC_LIBS="$CBC_LDFLAGS $CBC_LIBS" |
|
| 133 |
AC_SUBST(CBC_CXXFLAGS) |
|
| 134 |
AC_SUBST(CBC_LIBS) |
|
| 135 |
AM_CONDITIONAL([HAVE_CBC], [test x"$lx_cbc_found" = x"yes"]) |
|
| 136 |
]) |
| 1 |
#!/usr/bin/env /usr/local/Python/bin/python2.1 |
|
| 2 |
""" |
|
| 3 |
BibTeX to Doxygen converter |
|
| 4 |
Usage: python bib2dox.py bibfile.bib > bibfile.dox |
|
| 5 |
|
|
| 6 |
This code is the modification of the BibTeX to XML converter |
|
| 7 |
by Vidar Bronken Gundersen et al. See the original copyright notices below. |
|
| 8 |
|
|
| 9 |
********************************************************************** |
|
| 10 |
|
|
| 11 |
Decoder for bibliographic data, BibTeX |
|
| 12 |
Usage: python bibtex2xml.py bibfile.bib > bibfile.xml |
|
| 13 |
|
|
| 14 |
v.8 |
|
| 15 |
(c)2002-06-23 Vidar Bronken Gundersen |
|
| 16 |
http://bibtexml.sf.net/ |
|
| 17 |
Reuse approved as long as this notification is kept. |
|
| 18 |
Licence: GPL. |
|
| 19 |
|
|
| 20 |
Contributions/thanks to: |
|
| 21 |
Egon Willighagen, http://sf.net/projects/jreferences/ |
|
| 22 |
Richard Mahoney (for providing a test case) |
|
| 23 |
|
|
| 24 |
Editted by Sara Sprenkle to be more robust and handle more bibtex features. |
|
| 25 |
(c) 2003-01-15 |
|
| 26 |
|
|
| 27 |
1. Changed bibtex: tags to bibxml: tags. |
|
| 28 |
2. Use xmlns:bibxml="http://bibtexml.sf.net/" |
|
| 29 |
3. Allow spaces between @type and first {
|
|
| 30 |
4. "author" fields with multiple authors split by " and " |
|
| 31 |
are put in separate xml "bibxml:author" tags. |
|
| 32 |
5. Option for Titles: words are capitalized |
|
| 33 |
only if first letter in title or capitalized inside braces |
|
| 34 |
6. Removes braces from within field values |
|
| 35 |
7. Ignores comments in bibtex file (including @comment{ or % )
|
|
| 36 |
8. Replaces some special latex tags, e.g., replaces ~ with ' ' |
|
| 37 |
9. Handles bibtex @string abbreviations |
|
| 38 |
--> includes bibtex's default abbreviations for months |
|
| 39 |
--> does concatenation of abbr # " more " and " more " # abbr |
|
| 40 |
10. Handles @type( ... ) or @type{ ... }
|
|
| 41 |
11. The keywords field is split on , or ; and put into separate xml |
|
| 42 |
"bibxml:keywords" tags |
|
| 43 |
12. Ignores @preamble |
|
| 44 |
|
|
| 45 |
Known Limitations |
|
| 46 |
1. Does not transform Latex encoding like math mode and special |
|
| 47 |
latex symbols. |
|
| 48 |
2. Does not parse author fields into first and last names. |
|
| 49 |
E.g., It does not do anything special to an author whose name is |
|
| 50 |
in the form LAST_NAME, FIRST_NAME |
|
| 51 |
In "author" tag, will show up as |
|
| 52 |
<bibxml:author>LAST_NAME, FIRST_NAME</bibxml:author> |
|
| 53 |
3. Does not handle "crossref" fields other than to print |
|
| 54 |
<bibxml:crossref>...</bibxml:crossref> |
|
| 55 |
4. Does not inform user of the input's format errors. You just won't |
|
| 56 |
be able to transform the file later with XSL |
|
| 57 |
|
|
| 58 |
You will have to manually edit the XML output if you need to handle |
|
| 59 |
these (and unknown) limitations. |
|
| 60 |
|
|
| 61 |
""" |
|
| 62 |
|
|
| 63 |
import string, re |
|
| 64 |
|
|
| 65 |
# set of valid name characters |
|
| 66 |
valid_name_chars = '[\w\-:]' |
|
| 67 |
|
|
| 68 |
# |
|
| 69 |
# define global regular expression variables |
|
| 70 |
# |
|
| 71 |
author_rex = re.compile('\s+and\s+')
|
|
| 72 |
rembraces_rex = re.compile('[{}]')
|
|
| 73 |
capitalize_rex = re.compile('({[^}]*})')
|
|
| 74 |
|
|
| 75 |
# used by bibtexkeywords(data) |
|
| 76 |
keywords_rex = re.compile('[,;]')
|
|
| 77 |
|
|
| 78 |
# used by concat_line(line) |
|
| 79 |
concatsplit_rex = re.compile('\s*#\s*')
|
|
| 80 |
|
|
| 81 |
# split on {, }, or " in verify_out_of_braces
|
|
| 82 |
delimiter_rex = re.compile('([{}"])',re.I)
|
|
| 83 |
|
|
| 84 |
field_rex = re.compile('\s*(\w*)\s*=\s*(.*)')
|
|
| 85 |
data_rex = re.compile('\s*(\w*)\s*=\s*([^,]*),?')
|
|
| 86 |
|
|
| 87 |
url_rex = re.compile('\\\url\{([^}]*)\}')
|
|
| 88 |
|
|
| 89 |
# |
|
| 90 |
# styles for html formatting |
|
| 91 |
# |
|
| 92 |
divstyle = 'margin-top: -4ex; margin-left: 8em;' |
|
| 93 |
|
|
| 94 |
# |
|
| 95 |
# return the string parameter without braces |
|
| 96 |
# |
|
| 97 |
def transformurls(str): |
|
| 98 |
return url_rex.sub(r'<a href="\1">\1</a>', str) |
|
| 99 |
|
|
| 100 |
# |
|
| 101 |
# return the string parameter without braces |
|
| 102 |
# |
|
| 103 |
def removebraces(str): |
|
| 104 |
return rembraces_rex.sub('', str)
|
|
| 105 |
|
|
| 106 |
# |
|
| 107 |
# latex-specific replacements |
|
| 108 |
# (do this after braces were removed) |
|
| 109 |
# |
|
| 110 |
def latexreplacements(line): |
|
| 111 |
line = string.replace(line, '~', ' ') |
|
| 112 |
line = string.replace(line, '\\\'a', 'á') |
|
| 113 |
line = string.replace(line, '\\"a', 'ä') |
|
| 114 |
line = string.replace(line, '\\\'e', 'é') |
|
| 115 |
line = string.replace(line, '\\"e', 'ë') |
|
| 116 |
line = string.replace(line, '\\\'i', 'í') |
|
| 117 |
line = string.replace(line, '\\"i', 'ï') |
|
| 118 |
line = string.replace(line, '\\\'o', 'ó') |
|
| 119 |
line = string.replace(line, '\\"o', 'ö') |
|
| 120 |
line = string.replace(line, '\\\'u', 'ú') |
|
| 121 |
line = string.replace(line, '\\"u', 'ü') |
|
| 122 |
line = string.replace(line, '\\H o', 'õ') |
|
| 123 |
line = string.replace(line, '\\H u', 'ü') # ũ does not exist |
|
| 124 |
line = string.replace(line, '\\\'A', 'Á') |
|
| 125 |
line = string.replace(line, '\\"A', 'Ä') |
|
| 126 |
line = string.replace(line, '\\\'E', 'É') |
|
| 127 |
line = string.replace(line, '\\"E', 'Ë') |
|
| 128 |
line = string.replace(line, '\\\'I', 'Í') |
|
| 129 |
line = string.replace(line, '\\"I', 'Ï') |
|
| 130 |
line = string.replace(line, '\\\'O', 'Ó') |
|
| 131 |
line = string.replace(line, '\\"O', 'Ö') |
|
| 132 |
line = string.replace(line, '\\\'U', 'Ú') |
|
| 133 |
line = string.replace(line, '\\"U', 'Ü') |
|
| 134 |
line = string.replace(line, '\\H O', 'Õ') |
|
| 135 |
line = string.replace(line, '\\H U', 'Ü') # Ũ does not exist |
|
| 136 |
|
|
| 137 |
return line |
|
| 138 |
|
|
| 139 |
# |
|
| 140 |
# copy characters form a string decoding html expressions (&xyz;) |
|
| 141 |
# |
|
| 142 |
def copychars(str, ifrom, count): |
|
| 143 |
result = '' |
|
| 144 |
i = ifrom |
|
| 145 |
c = 0 |
|
| 146 |
html_spec = False |
|
| 147 |
while (i < len(str)) and (c < count): |
|
| 148 |
if str[i] == '&': |
|
| 149 |
html_spec = True; |
|
| 150 |
if i+1 < len(str): |
|
| 151 |
result += str[i+1] |
|
| 152 |
c += 1 |
|
| 153 |
i += 2 |
|
| 154 |
else: |
|
| 155 |
if not html_spec: |
|
| 156 |
if ((str[i] >= 'A') and (str[i] <= 'Z')) or \ |
|
| 157 |
((str[i] >= 'a') and (str[i] <= 'z')): |
|
| 158 |
result += str[i] |
|
| 159 |
c += 1 |
|
| 160 |
elif str[i] == ';': |
|
| 161 |
html_spec = False; |
|
| 162 |
i += 1 |
|
| 163 |
|
|
| 164 |
return result |
|
| 165 |
|
|
| 166 |
|
|
| 167 |
# |
|
| 168 |
# Handle a list of authors (separated by 'and'). |
|
| 169 |
# It gives back an array of the follwing values: |
|
| 170 |
# - num: the number of authors, |
|
| 171 |
# - list: the list of the author names, |
|
| 172 |
# - text: the bibtex text (separated by commas and/or 'and') |
|
| 173 |
# - abbrev: abbreviation that can be used for indicate the |
|
| 174 |
# bibliography entries |
|
| 175 |
# |
|
| 176 |
def bibtexauthor(data): |
|
| 177 |
result = {}
|
|
| 178 |
bibtex = '' |
|
| 179 |
result['list'] = author_rex.split(data) |
|
| 180 |
result['num'] = len(result['list']) |
|
| 181 |
for i, author in enumerate(result['list']): |
|
| 182 |
# general transformations |
|
| 183 |
author = latexreplacements(removebraces(author.strip())) |
|
| 184 |
# transform "Xyz, A. B." to "A. B. Xyz" |
|
| 185 |
pos = author.find(',')
|
|
| 186 |
if pos != -1: |
|
| 187 |
author = author[pos+1:].strip() + ' ' + author[:pos].strip() |
|
| 188 |
result['list'][i] = author |
|
| 189 |
bibtex += author + '#' |
|
| 190 |
bibtex = bibtex[:-1] |
|
| 191 |
if result['num'] > 1: |
|
| 192 |
ix = bibtex.rfind('#')
|
|
| 193 |
if result['num'] == 2: |
|
| 194 |
bibtex = bibtex[:ix] + ' and ' + bibtex[ix+1:] |
|
| 195 |
else: |
|
| 196 |
bibtex = bibtex[:ix] + ', and ' + bibtex[ix+1:] |
|
| 197 |
bibtex = bibtex.replace('#', ', ')
|
|
| 198 |
result['text'] = bibtex |
|
| 199 |
|
|
| 200 |
result['abbrev'] = '' |
|
| 201 |
for author in result['list']: |
|
| 202 |
pos = author.rfind(' ') + 1
|
|
| 203 |
count = 1 |
|
| 204 |
if result['num'] == 1: |
|
| 205 |
count = 3 |
|
| 206 |
result['abbrev'] += copychars(author, pos, count) |
|
| 207 |
|
|
| 208 |
return result |
|
| 209 |
|
|
| 210 |
|
|
| 211 |
# |
|
| 212 |
# data = title string |
|
| 213 |
# @return the capitalized title (first letter is capitalized), rest are capitalized |
|
| 214 |
# only if capitalized inside braces |
|
| 215 |
# |
|
| 216 |
def capitalizetitle(data): |
|
| 217 |
title_list = capitalize_rex.split(data) |
|
| 218 |
title = '' |
|
| 219 |
count = 0 |
|
| 220 |
for phrase in title_list: |
|
| 221 |
check = string.lstrip(phrase) |
|
| 222 |
|
|
| 223 |
# keep phrase's capitalization the same |
|
| 224 |
if check.find('{') == 0:
|
|
| 225 |
title += removebraces(phrase) |
|
| 226 |
else: |
|
| 227 |
# first word --> capitalize first letter (after spaces) |
|
| 228 |
if count == 0: |
|
| 229 |
title += check.capitalize() |
|
| 230 |
else: |
|
| 231 |
title += phrase.lower() |
|
| 232 |
count = count + 1 |
|
| 233 |
|
|
| 234 |
return title |
|
| 235 |
|
|
| 236 |
|
|
| 237 |
# |
|
| 238 |
# @return the bibtex for the title |
|
| 239 |
# @param data --> title string |
|
| 240 |
# braces are removed from title |
|
| 241 |
# |
|
| 242 |
def bibtextitle(data, entrytype): |
|
| 243 |
if entrytype in ('book', 'inbook'):
|
|
| 244 |
title = removebraces(data.strip()) |
|
| 245 |
else: |
|
| 246 |
title = removebraces(capitalizetitle(data.strip())) |
|
| 247 |
bibtex = title |
|
| 248 |
return bibtex |
|
| 249 |
|
|
| 250 |
|
|
| 251 |
# |
|
| 252 |
# function to compare entry lists |
|
| 253 |
# |
|
| 254 |
def entry_cmp(x, y): |
|
| 255 |
return cmp(x[0], y[0]) |
|
| 256 |
|
|
| 257 |
|
|
| 258 |
# |
|
| 259 |
# print the XML for the transformed "filecont_source" |
|
| 260 |
# |
|
| 261 |
def bibtexdecoder(filecont_source): |
|
| 262 |
filecont = [] |
|
| 263 |
file = [] |
|
| 264 |
|
|
| 265 |
# want @<alphanumeric chars><spaces>{<spaces><any chars>,
|
|
| 266 |
pubtype_rex = re.compile('@(\w*)\s*{\s*(.*),')
|
|
| 267 |
endtype_rex = re.compile('}\s*$')
|
|
| 268 |
endtag_rex = re.compile('^\s*}\s*$')
|
|
| 269 |
|
|
| 270 |
bracefield_rex = re.compile('\s*(\w*)\s*=\s*(.*)')
|
|
| 271 |
bracedata_rex = re.compile('\s*(\w*)\s*=\s*{(.*)},?')
|
|
| 272 |
|
|
| 273 |
quotefield_rex = re.compile('\s*(\w*)\s*=\s*(.*)')
|
|
| 274 |
quotedata_rex = re.compile('\s*(\w*)\s*=\s*"(.*)",?')
|
|
| 275 |
|
|
| 276 |
for line in filecont_source: |
|
| 277 |
line = line[:-1] |
|
| 278 |
|
|
| 279 |
# encode character entities |
|
| 280 |
line = string.replace(line, '&', '&') |
|
| 281 |
line = string.replace(line, '<', '<') |
|
| 282 |
line = string.replace(line, '>', '>') |
|
| 283 |
|
|
| 284 |
# start entry: publication type (store for later use) |
|
| 285 |
if pubtype_rex.match(line): |
|
| 286 |
# want @<alphanumeric chars><spaces>{<spaces><any chars>,
|
|
| 287 |
entrycont = {}
|
|
| 288 |
entry = [] |
|
| 289 |
entrytype = pubtype_rex.sub('\g<1>',line)
|
|
| 290 |
entrytype = string.lower(entrytype) |
|
| 291 |
entryid = pubtype_rex.sub('\g<2>', line)
|
|
| 292 |
|
|
| 293 |
# end entry if just a } |
|
| 294 |
elif endtype_rex.match(line): |
|
| 295 |
# generate doxygen code for the entry |
|
| 296 |
|
|
| 297 |
# enty type related formattings |
|
| 298 |
if entrytype in ('book', 'inbook'):
|
|
| 299 |
entrycont['title'] = '<em>' + entrycont['title'] + '</em>' |
|
| 300 |
if not entrycont.has_key('author'):
|
|
| 301 |
entrycont['author'] = entrycont['editor'] |
|
| 302 |
entrycont['author']['text'] += ', editors' |
|
| 303 |
elif entrytype == 'article': |
|
| 304 |
entrycont['journal'] = '<em>' + entrycont['journal'] + '</em>' |
|
| 305 |
elif entrytype in ('inproceedings', 'incollection', 'conference'):
|
|
| 306 |
entrycont['booktitle'] = '<em>' + entrycont['booktitle'] + '</em>' |
|
| 307 |
elif entrytype == 'techreport': |
|
| 308 |
if not entrycont.has_key('type'):
|
|
| 309 |
entrycont['type'] = 'Technical report' |
|
| 310 |
elif entrytype == 'mastersthesis': |
|
| 311 |
entrycont['type'] = 'Master\'s thesis' |
|
| 312 |
elif entrytype == 'phdthesis': |
|
| 313 |
entrycont['type'] = 'PhD thesis' |
|
| 314 |
|
|
| 315 |
for eline in entrycont: |
|
| 316 |
if eline != '': |
|
| 317 |
eline = latexreplacements(eline) |
|
| 318 |
|
|
| 319 |
if entrycont.has_key('pages') and (entrycont['pages'] != ''):
|
|
| 320 |
entrycont['pages'] = string.replace(entrycont['pages'], '--', '-') |
|
| 321 |
|
|
| 322 |
if entrycont.has_key('author') and (entrycont['author'] != ''):
|
|
| 323 |
entry.append(entrycont['author']['text'] + '.') |
|
| 324 |
if entrycont.has_key('title') and (entrycont['title'] != ''):
|
|
| 325 |
entry.append(entrycont['title'] + '.') |
|
| 326 |
if entrycont.has_key('journal') and (entrycont['journal'] != ''):
|
|
| 327 |
entry.append(entrycont['journal'] + ',') |
|
| 328 |
if entrycont.has_key('booktitle') and (entrycont['booktitle'] != ''):
|
|
| 329 |
entry.append('In ' + entrycont['booktitle'] + ',')
|
|
| 330 |
if entrycont.has_key('type') and (entrycont['type'] != ''):
|
|
| 331 |
eline = entrycont['type'] |
|
| 332 |
if entrycont.has_key('number') and (entrycont['number'] != ''):
|
|
| 333 |
eline += ' ' + entrycont['number'] |
|
| 334 |
eline += ',' |
|
| 335 |
entry.append(eline) |
|
| 336 |
if entrycont.has_key('institution') and (entrycont['institution'] != ''):
|
|
| 337 |
entry.append(entrycont['institution'] + ',') |
|
| 338 |
if entrycont.has_key('publisher') and (entrycont['publisher'] != ''):
|
|
| 339 |
entry.append(entrycont['publisher'] + ',') |
|
| 340 |
if entrycont.has_key('school') and (entrycont['school'] != ''):
|
|
| 341 |
entry.append(entrycont['school'] + ',') |
|
| 342 |
if entrycont.has_key('address') and (entrycont['address'] != ''):
|
|
| 343 |
entry.append(entrycont['address'] + ',') |
|
| 344 |
if entrycont.has_key('edition') and (entrycont['edition'] != ''):
|
|
| 345 |
entry.append(entrycont['edition'] + ' edition,') |
|
| 346 |
if entrycont.has_key('howpublished') and (entrycont['howpublished'] != ''):
|
|
| 347 |
entry.append(entrycont['howpublished'] + ',') |
|
| 348 |
if entrycont.has_key('volume') and (entrycont['volume'] != ''):
|
|
| 349 |
eline = entrycont['volume']; |
|
| 350 |
if entrycont.has_key('number') and (entrycont['number'] != ''):
|
|
| 351 |
eline += '(' + entrycont['number'] + ')'
|
|
| 352 |
if entrycont.has_key('pages') and (entrycont['pages'] != ''):
|
|
| 353 |
eline += ':' + entrycont['pages'] |
|
| 354 |
eline += ',' |
|
| 355 |
entry.append(eline) |
|
| 356 |
else: |
|
| 357 |
if entrycont.has_key('pages') and (entrycont['pages'] != ''):
|
|
| 358 |
entry.append('pages ' + entrycont['pages'] + ',')
|
|
| 359 |
if entrycont.has_key('year') and (entrycont['year'] != ''):
|
|
| 360 |
if entrycont.has_key('month') and (entrycont['month'] != ''):
|
|
| 361 |
entry.append(entrycont['month'] + ' ' + entrycont['year'] + '.') |
|
| 362 |
else: |
|
| 363 |
entry.append(entrycont['year'] + '.') |
|
| 364 |
if entrycont.has_key('note') and (entrycont['note'] != ''):
|
|
| 365 |
entry.append(entrycont['note'] + '.') |
|
| 366 |
if entrycont.has_key('url') and (entrycont['url'] != ''):
|
|
| 367 |
entry.append(entrycont['url'] + '.') |
|
| 368 |
|
|
| 369 |
# generate keys for sorting and for the output |
|
| 370 |
sortkey = '' |
|
| 371 |
bibkey = '' |
|
| 372 |
if entrycont.has_key('author'):
|
|
| 373 |
for author in entrycont['author']['list']: |
|
| 374 |
sortkey += copychars(author, author.rfind(' ')+1, len(author))
|
|
| 375 |
bibkey = entrycont['author']['abbrev'] |
|
| 376 |
else: |
|
| 377 |
bibkey = 'x' |
|
| 378 |
if entrycont.has_key('year'):
|
|
| 379 |
sortkey += entrycont['year'] |
|
| 380 |
bibkey += entrycont['year'][-2:] |
|
| 381 |
if entrycont.has_key('title'):
|
|
| 382 |
sortkey += entrycont['title'] |
|
| 383 |
if entrycont.has_key('key'):
|
|
| 384 |
sortkey = entrycont['key'] + sortkey |
|
| 385 |
bibkey = entrycont['key'] |
|
| 386 |
entry.insert(0, sortkey) |
|
| 387 |
entry.insert(1, bibkey) |
|
| 388 |
entry.insert(2, entryid) |
|
| 389 |
|
|
| 390 |
# add the entry to the file contents |
|
| 391 |
filecont.append(entry) |
|
| 392 |
|
|
| 393 |
else: |
|
| 394 |
# field, publication info |
|
| 395 |
field = '' |
|
| 396 |
data = '' |
|
| 397 |
|
|
| 398 |
# field = {data} entries
|
|
| 399 |
if bracedata_rex.match(line): |
|
| 400 |
field = bracefield_rex.sub('\g<1>', line)
|
|
| 401 |
field = string.lower(field) |
|
| 402 |
data = bracedata_rex.sub('\g<2>', line)
|
|
| 403 |
|
|
| 404 |
# field = "data" entries |
|
| 405 |
elif quotedata_rex.match(line): |
|
| 406 |
field = quotefield_rex.sub('\g<1>', line)
|
|
| 407 |
field = string.lower(field) |
|
| 408 |
data = quotedata_rex.sub('\g<2>', line)
|
|
| 409 |
|
|
| 410 |
# field = data entries |
|
| 411 |
elif data_rex.match(line): |
|
| 412 |
field = field_rex.sub('\g<1>', line)
|
|
| 413 |
field = string.lower(field) |
|
| 414 |
data = data_rex.sub('\g<2>', line)
|
|
| 415 |
|
|
| 416 |
if field == 'url': |
|
| 417 |
data = '\\url{' + data.strip() + '}'
|
|
| 418 |
|
|
| 419 |
if field in ('author', 'editor'):
|
|
| 420 |
entrycont[field] = bibtexauthor(data) |
|
| 421 |
line = '' |
|
| 422 |
elif field == 'title': |
|
| 423 |
line = bibtextitle(data, entrytype) |
|
| 424 |
elif field != '': |
|
| 425 |
line = removebraces(transformurls(data.strip())) |
|
| 426 |
|
|
| 427 |
if line != '': |
|
| 428 |
line = latexreplacements(line) |
|
| 429 |
entrycont[field] = line |
|
| 430 |
|
|
| 431 |
|
|
| 432 |
# sort entries |
|
| 433 |
filecont.sort(entry_cmp) |
|
| 434 |
|
|
| 435 |
# count the bibtex keys |
|
| 436 |
keytable = {}
|
|
| 437 |
counttable = {}
|
|
| 438 |
for entry in filecont: |
|
| 439 |
bibkey = entry[1] |
|
| 440 |
if not keytable.has_key(bibkey): |
|
| 441 |
keytable[bibkey] = 1 |
|
| 442 |
else: |
|
| 443 |
keytable[bibkey] += 1 |
|
| 444 |
|
|
| 445 |
for bibkey in keytable.keys(): |
|
| 446 |
counttable[bibkey] = 0 |
|
| 447 |
|
|
| 448 |
# generate output |
|
| 449 |
for entry in filecont: |
|
| 450 |
# generate output key form the bibtex key |
|
| 451 |
bibkey = entry[1] |
|
| 452 |
entryid = entry[2] |
|
| 453 |
if keytable[bibkey] == 1: |
|
| 454 |
outkey = bibkey |
|
| 455 |
else: |
|
| 456 |
outkey = bibkey + chr(97 + counttable[bibkey]) |
|
| 457 |
counttable[bibkey] += 1 |
|
| 458 |
|
|
| 459 |
# append the entry code to the output |
|
| 460 |
file.append('\\section ' + entryid + ' [' + outkey + ']')
|
|
| 461 |
file.append('<div style="' + divstyle + '">')
|
|
| 462 |
for line in entry[3:]: |
|
| 463 |
file.append(line) |
|
| 464 |
file.append('</div>')
|
|
| 465 |
file.append('')
|
|
| 466 |
|
|
| 467 |
return file |
|
| 468 |
|
|
| 469 |
|
|
| 470 |
# |
|
| 471 |
# return 1 iff abbr is in line but not inside braces or quotes |
|
| 472 |
# assumes that abbr appears only once on the line (out of braces and quotes) |
|
| 473 |
# |
|
| 474 |
def verify_out_of_braces(line, abbr): |
|
| 475 |
|
|
| 476 |
phrase_split = delimiter_rex.split(line) |
|
| 477 |
|
|
| 478 |
abbr_rex = re.compile( '\\b' + abbr + '\\b', re.I) |
|
| 479 |
|
|
| 480 |
open_brace = 0 |
|
| 481 |
open_quote = 0 |
|
| 482 |
|
|
| 483 |
for phrase in phrase_split: |
|
| 484 |
if phrase == "{":
|
|
| 485 |
open_brace = open_brace + 1 |
|
| 486 |
elif phrase == "}": |
|
| 487 |
open_brace = open_brace - 1 |
|
| 488 |
elif phrase == '"': |
|
| 489 |
if open_quote == 1: |
|
| 490 |
open_quote = 0 |
|
| 491 |
else: |
|
| 492 |
open_quote = 1 |
|
| 493 |
elif abbr_rex.search(phrase): |
|
| 494 |
if open_brace == 0 and open_quote == 0: |
|
| 495 |
return 1 |
|
| 496 |
|
|
| 497 |
return 0 |
|
| 498 |
|
|
| 499 |
|
|
| 500 |
# |
|
| 501 |
# a line in the form phrase1 # phrase2 # ... # phrasen |
|
| 502 |
# is returned as phrase1 phrase2 ... phrasen |
|
| 503 |
# with the correct punctuation |
|
| 504 |
# Bug: Doesn't always work with multiple abbreviations plugged in |
|
| 505 |
# |
|
| 506 |
def concat_line(line): |
|
| 507 |
# only look at part after equals |
|
| 508 |
field = field_rex.sub('\g<1>',line)
|
|
| 509 |
rest = field_rex.sub('\g<2>',line)
|
|
| 510 |
|
|
| 511 |
concat_line = field + ' =' |
|
| 512 |
|
|
| 513 |
pound_split = concatsplit_rex.split(rest) |
|
| 514 |
|
|
| 515 |
phrase_count = 0 |
|
| 516 |
length = len(pound_split) |
|
| 517 |
|
|
| 518 |
for phrase in pound_split: |
|
| 519 |
phrase = phrase.strip() |
|
| 520 |
if phrase_count != 0: |
|
| 521 |
if phrase.startswith('"') or phrase.startswith('{'):
|
|
| 522 |
phrase = phrase[1:] |
|
| 523 |
elif phrase.startswith('"'):
|
|
| 524 |
phrase = phrase.replace('"','{',1)
|
|
| 525 |
|
|
| 526 |
if phrase_count != length-1: |
|
| 527 |
if phrase.endswith('"') or phrase.endswith('}'):
|
|
| 528 |
phrase = phrase[:-1] |
|
| 529 |
else: |
|
| 530 |
if phrase.endswith('"'):
|
|
| 531 |
phrase = phrase[:-1] |
|
| 532 |
phrase = phrase + "}" |
|
| 533 |
elif phrase.endswith('",'):
|
|
| 534 |
phrase = phrase[:-2] |
|
| 535 |
phrase = phrase + "}," |
|
| 536 |
|
|
| 537 |
# if phrase did have \#, add the \# back |
|
| 538 |
if phrase.endswith('\\'):
|
|
| 539 |
phrase = phrase + "#" |
|
| 540 |
concat_line = concat_line + ' ' + phrase |
|
| 541 |
|
|
| 542 |
phrase_count = phrase_count + 1 |
|
| 543 |
|
|
| 544 |
return concat_line |
|
| 545 |
|
|
| 546 |
|
|
| 547 |
# |
|
| 548 |
# substitute abbreviations into filecont |
|
| 549 |
# @param filecont_source - string of data from file |
|
| 550 |
# |
|
| 551 |
def bibtex_replace_abbreviations(filecont_source): |
|
| 552 |
filecont = filecont_source.splitlines() |
|
| 553 |
|
|
| 554 |
# These are defined in bibtex, so we'll define them too |
|
| 555 |
abbr_list = ['jan','feb','mar','apr','may','jun', |
|
| 556 |
'jul','aug','sep','oct','nov','dec'] |
|
| 557 |
value_list = ['January','February','March','April', |
|
| 558 |
'May','June','July','August','September', |
|
| 559 |
'October','November','December'] |
|
| 560 |
|
|
| 561 |
abbr_rex = [] |
|
| 562 |
total_abbr_count = 0 |
|
| 563 |
|
|
| 564 |
front = '\\b' |
|
| 565 |
back = '(,?)\\b' |
|
| 566 |
|
|
| 567 |
for x in abbr_list: |
|
| 568 |
abbr_rex.append( re.compile( front + abbr_list[total_abbr_count] + back, re.I ) ) |
|
| 569 |
total_abbr_count = total_abbr_count + 1 |
|
| 570 |
|
|
| 571 |
|
|
| 572 |
abbrdef_rex = re.compile('\s*@string\s*{\s*('+ valid_name_chars +'*)\s*=(.*)',
|
|
| 573 |
re.I) |
|
| 574 |
|
|
| 575 |
comment_rex = re.compile('@comment\s*{',re.I)
|
|
| 576 |
preamble_rex = re.compile('@preamble\s*{',re.I)
|
|
| 577 |
|
|
| 578 |
waiting_for_end_string = 0 |
|
| 579 |
i = 0 |
|
| 580 |
filecont2 = '' |
|
| 581 |
|
|
| 582 |
for line in filecont: |
|
| 583 |
if line == ' ' or line == '': |
|
| 584 |
continue |
|
| 585 |
|
|
| 586 |
if waiting_for_end_string: |
|
| 587 |
if re.search('}',line):
|
|
| 588 |
waiting_for_end_string = 0 |
|
| 589 |
continue |
|
| 590 |
|
|
| 591 |
if abbrdef_rex.search(line): |
|
| 592 |
abbr = abbrdef_rex.sub('\g<1>', line)
|
|
| 593 |
|
|
| 594 |
if abbr_list.count(abbr) == 0: |
|
| 595 |
val = abbrdef_rex.sub('\g<2>', line)
|
|
| 596 |
abbr_list.append(abbr) |
|
| 597 |
value_list.append(string.strip(val)) |
|
| 598 |
abbr_rex.append( re.compile( front + abbr_list[total_abbr_count] + back, re.I ) ) |
|
| 599 |
total_abbr_count = total_abbr_count + 1 |
|
| 600 |
waiting_for_end_string = 1 |
|
| 601 |
continue |
|
| 602 |
|
|
| 603 |
if comment_rex.search(line): |
|
| 604 |
waiting_for_end_string = 1 |
|
| 605 |
continue |
|
| 606 |
|
|
| 607 |
if preamble_rex.search(line): |
|
| 608 |
waiting_for_end_string = 1 |
|
| 609 |
continue |
|
| 610 |
|
|
| 611 |
|
|
| 612 |
# replace subsequent abbreviations with the value |
|
| 613 |
abbr_count = 0 |
|
| 614 |
|
|
| 615 |
for x in abbr_list: |
|
| 616 |
|
|
| 617 |
if abbr_rex[abbr_count].search(line): |
|
| 618 |
if verify_out_of_braces(line,abbr_list[abbr_count]) == 1: |
|
| 619 |
line = abbr_rex[abbr_count].sub( value_list[abbr_count] + '\g<1>', line) |
|
| 620 |
# Check for # concatenations |
|
| 621 |
if concatsplit_rex.search(line): |
|
| 622 |
line = concat_line(line) |
|
| 623 |
abbr_count = abbr_count + 1 |
|
| 624 |
|
|
| 625 |
|
|
| 626 |
filecont2 = filecont2 + line + '\n' |
|
| 627 |
i = i+1 |
|
| 628 |
|
|
| 629 |
|
|
| 630 |
# Do one final pass over file |
|
| 631 |
|
|
| 632 |
# make sure that didn't end up with {" or }" after the substitution
|
|
| 633 |
filecont2 = filecont2.replace('{"','{{')
|
|
| 634 |
filecont2 = filecont2.replace('"}','}}')
|
|
| 635 |
|
|
| 636 |
afterquotevalue_rex = re.compile('"\s*,\s*')
|
|
| 637 |
afterbrace_rex = re.compile('"\s*}')
|
|
| 638 |
afterbracevalue_rex = re.compile('(=\s*{[^=]*)},\s*')
|
|
| 639 |
|
|
| 640 |
# add new lines to data that changed because of abbreviation substitutions |
|
| 641 |
filecont2 = afterquotevalue_rex.sub('",\n', filecont2)
|
|
| 642 |
filecont2 = afterbrace_rex.sub('"\n}', filecont2)
|
|
| 643 |
filecont2 = afterbracevalue_rex.sub('\g<1>},\n', filecont2)
|
|
| 644 |
|
|
| 645 |
return filecont2 |
|
| 646 |
|
|
| 647 |
# |
|
| 648 |
# convert @type( ... ) to @type{ ... }
|
|
| 649 |
# |
|
| 650 |
def no_outer_parens(filecont): |
|
| 651 |
|
|
| 652 |
# do checking for open parens |
|
| 653 |
# will convert to braces |
|
| 654 |
paren_split = re.split('([(){}])',filecont)
|
|
| 655 |
|
|
| 656 |
open_paren_count = 0 |
|
| 657 |
open_type = 0 |
|
| 658 |
look_next = 0 |
|
| 659 |
|
|
| 660 |
# rebuild filecont |
|
| 661 |
filecont = '' |
|
| 662 |
|
|
| 663 |
at_rex = re.compile('@\w*')
|
|
| 664 |
|
|
| 665 |
for phrase in paren_split: |
|
| 666 |
if look_next == 1: |
|
| 667 |
if phrase == '(':
|
|
| 668 |
phrase = '{'
|
|
| 669 |
open_paren_count = open_paren_count + 1 |
|
| 670 |
else: |
|
| 671 |
open_type = 0 |
|
| 672 |
look_next = 0 |
|
| 673 |
|
|
| 674 |
if phrase == '(':
|
|
| 675 |
open_paren_count = open_paren_count + 1 |
|
| 676 |
|
|
| 677 |
elif phrase == ')': |
|
| 678 |
open_paren_count = open_paren_count - 1 |
|
| 679 |
if open_type == 1 and open_paren_count == 0: |
|
| 680 |
phrase = '}' |
|
| 681 |
open_type = 0 |
|
| 682 |
|
|
| 683 |
elif at_rex.search( phrase ): |
|
| 684 |
open_type = 1 |
|
| 685 |
look_next = 1 |
|
| 686 |
|
|
| 687 |
filecont = filecont + phrase |
|
| 688 |
|
|
| 689 |
return filecont |
|
| 690 |
|
|
| 691 |
|
|
| 692 |
# |
|
| 693 |
# make all whitespace into just one space |
|
| 694 |
# format the bibtex file into a usable form. |
|
| 695 |
# |
|
| 696 |
def bibtexwasher(filecont_source): |
|
| 697 |
|
|
| 698 |
space_rex = re.compile('\s+')
|
|
| 699 |
comment_rex = re.compile('\s*%')
|
|
| 700 |
|
|
| 701 |
filecont = [] |
|
| 702 |
|
|
| 703 |
# remove trailing and excessive whitespace |
|
| 704 |
# ignore comments |
|
| 705 |
for line in filecont_source: |
|
| 706 |
line = string.strip(line) |
|
| 707 |
line = space_rex.sub(' ', line)
|
|
| 708 |
# ignore comments |
|
| 709 |
if not comment_rex.match(line) and line != '': |
|
| 710 |
filecont.append(' '+ line)
|
|
| 711 |
|
|
| 712 |
filecont = string.join(filecont, '') |
|
| 713 |
|
|
| 714 |
# the file is in one long string |
|
| 715 |
|
|
| 716 |
filecont = no_outer_parens(filecont) |
|
| 717 |
|
|
| 718 |
# |
|
| 719 |
# split lines according to preferred syntax scheme |
|
| 720 |
# |
|
| 721 |
filecont = re.sub('(=\s*{[^=]*)},', '\g<1>},\n', filecont)
|
|
| 722 |
|
|
| 723 |
# add new lines after commas that are after values |
|
| 724 |
filecont = re.sub('"\s*,', '",\n', filecont)
|
|
| 725 |
filecont = re.sub('=\s*([\w\d]+)\s*,', '= \g<1>,\n', filecont)
|
|
| 726 |
filecont = re.sub('(@\w*)\s*({(\s*)[^,\s]*)\s*,',
|
|
| 727 |
'\n\n\g<1>\g<2>,\n', filecont) |
|
| 728 |
|
|
| 729 |
# add new lines after } |
|
| 730 |
filecont = re.sub('"\s*}','"\n}\n', filecont)
|
|
| 731 |
filecont = re.sub('}\s*,','},\n', filecont)
|
|
| 732 |
|
|
| 733 |
|
|
| 734 |
filecont = re.sub('@(\w*)', '\n@\g<1>', filecont)
|
|
| 735 |
|
|
| 736 |
# character encoding, reserved latex characters |
|
| 737 |
filecont = re.sub('{\\\&}', '&', filecont)
|
|
| 738 |
filecont = re.sub('\\\&', '&', filecont)
|
|
| 739 |
|
|
| 740 |
# do checking for open braces to get format correct |
|
| 741 |
open_brace_count = 0 |
|
| 742 |
brace_split = re.split('([{}])',filecont)
|
|
| 743 |
|
|
| 744 |
# rebuild filecont |
|
| 745 |
filecont = '' |
|
| 746 |
|
|
| 747 |
for phrase in brace_split: |
|
| 748 |
if phrase == '{':
|
|
| 749 |
open_brace_count = open_brace_count + 1 |
|
| 750 |
elif phrase == '}': |
|
| 751 |
open_brace_count = open_brace_count - 1 |
|
| 752 |
if open_brace_count == 0: |
|
| 753 |
filecont = filecont + '\n' |
|
| 754 |
|
|
| 755 |
filecont = filecont + phrase |
|
| 756 |
|
|
| 757 |
filecont2 = bibtex_replace_abbreviations(filecont) |
|
| 758 |
|
|
| 759 |
# gather |
|
| 760 |
filecont = filecont2.splitlines() |
|
| 761 |
i=0 |
|
| 762 |
j=0 # count the number of blank lines |
|
| 763 |
for line in filecont: |
|
| 764 |
# ignore blank lines |
|
| 765 |
if line == '' or line == ' ': |
|
| 766 |
j = j+1 |
|
| 767 |
continue |
|
| 768 |
filecont[i] = line + '\n' |
|
| 769 |
i = i+1 |
|
| 770 |
|
|
| 771 |
# get rid of the extra stuff at the end of the array |
|
| 772 |
# (The extra stuff are duplicates that are in the array because |
|
| 773 |
# blank lines were removed.) |
|
| 774 |
length = len( filecont) |
|
| 775 |
filecont[length-j:length] = [] |
|
| 776 |
|
|
| 777 |
return filecont |
|
| 778 |
|
|
| 779 |
|
|
| 780 |
def filehandler(filepath): |
|
| 781 |
try: |
|
| 782 |
fd = open(filepath, 'r') |
|
| 783 |
filecont_source = fd.readlines() |
|
| 784 |
fd.close() |
|
| 785 |
except: |
|
| 786 |
print 'Could not open file:', filepath |
|
| 787 |
washeddata = bibtexwasher(filecont_source) |
|
| 788 |
outdata = bibtexdecoder(washeddata) |
|
| 789 |
print '/**' |
|
| 790 |
print '\page references References' |
|
| 791 |
|
|
| 792 |
for line in outdata: |
|
| 793 |
print line |
|
| 794 |
print '*/' |
|
| 795 |
|
|
| 796 |
|
|
| 797 |
# main program |
|
| 798 |
|
|
| 799 |
def main(): |
|
| 800 |
import sys |
|
| 801 |
if sys.argv[1:]: |
|
| 802 |
filepath = sys.argv[1] |
|
| 803 |
else: |
|
| 804 |
print "No input file" |
|
| 805 |
sys.exit() |
|
| 806 |
filehandler(filepath) |
|
| 807 |
|
|
| 808 |
if __name__ == "__main__": main() |
|
| 809 |
|
|
| 810 |
|
|
| 811 |
# end python script |
| 1 |
#!/bin/bash |
|
| 2 |
# |
|
| 3 |
# This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
# |
|
| 5 |
# Copyright (C) 2003-2009 |
|
| 6 |
# Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
# (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
# |
|
| 9 |
# Permission to use, modify and distribute this software is granted |
|
| 10 |
# provided that this copyright notice appears in all copies. For |
|
| 11 |
# precise terms see the accompanying LICENSE file. |
|
| 12 |
# |
|
| 13 |
# This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
# express or implied, and with no claim as to its suitability for any |
|
| 15 |
# purpose. |
|
| 16 |
|
|
| 17 |
|
|
| 18 |
if [ ! -f ~/.lemon-bootstrap ]; then |
|
| 19 |
echo 'Create ~/.lemon-bootstrap'. |
|
| 20 |
cat >~/.lemon-bootstrap <<EOF |
|
| 21 |
# |
|
| 22 |
# Default settings for bootstraping the LEMON source code repository |
|
| 23 |
# |
|
| 24 |
EOF |
|
| 25 |
fi |
|
| 26 |
|
|
| 27 |
source ~/.lemon-bootstrap |
|
| 28 |
if [ -f ../../../.lemon-bootstrap ]; then source ../../../.lemon-bootstrap; fi |
|
| 29 |
if [ -f ../../.lemon-bootstrap ]; then source ../../.lemon-bootstrap; fi |
|
| 30 |
if [ -f ../.lemon-bootstrap ]; then source ../.lemon-bootstrap; fi |
|
| 31 |
if [ -f ./.lemon-bootstrap ]; then source ./.lemon-bootstrap; fi |
|
| 32 |
|
|
| 33 |
|
|
| 34 |
function augment_config() {
|
|
| 35 |
if [ "x${!1}" == "x" ]; then
|
|
| 36 |
eval $1=$2 |
|
| 37 |
echo Add "'$1'" to '~/.lemon-bootstrap'. |
|
| 38 |
echo >>~/.lemon-bootstrap |
|
| 39 |
echo $3 >>~/.lemon-bootstrap |
|
| 40 |
echo $1=$2 >>~/.lemon-bootstrap |
|
| 41 |
fi |
|
| 42 |
} |
|
| 43 |
|
|
| 44 |
augment_config LEMON_INSTALL_PREFIX /usr/local \ |
|
| 45 |
"# LEMON installation prefix" |
|
| 46 |
|
|
| 47 |
augment_config COIN_OR_PREFIX /usr/local/coin-or \ |
|
| 48 |
"# COIN-OR installation root prefix (used for CLP/CBC)" |
|
| 49 |
|
|
| 50 |
augment_config SOPLEX_PREFIX /usr/local/soplex \ |
|
| 51 |
"# Soplex build prefix" |
|
| 52 |
|
|
| 53 |
|
|
| 54 |
function ask() {
|
|
| 55 |
echo -n "$1 [$2]? " |
|
| 56 |
read _an |
|
| 57 |
if [ "x$_an" == "x" ]; then |
|
| 58 |
ret="$2" |
|
| 59 |
else |
|
| 60 |
ret=$_an |
|
| 61 |
fi |
|
| 62 |
} |
|
| 63 |
|
|
| 64 |
function yesorno() {
|
|
| 65 |
ret='rossz' |
|
| 66 |
while [ "$ret" != "y" -a "$ret" != "n" -a "$ret" != "yes" -a "$ret" != "no" ]; do |
|
| 67 |
ask "$1" "$2" |
|
| 68 |
done |
|
| 69 |
if [ "$ret" != "y" -a "$ret" != "yes" ]; then |
|
| 70 |
return 1 |
|
| 71 |
else |
|
| 72 |
return 0 |
|
| 73 |
fi |
|
| 74 |
} |
|
| 75 |
|
|
| 76 |
if yesorno "External build" "n" |
|
| 77 |
then |
|
| 78 |
CONFIGURE_PATH=".." |
|
| 79 |
else |
|
| 80 |
CONFIGURE_PATH="." |
|
| 81 |
if yesorno "Autoreconf" "y" |
|
| 82 |
then |
|
| 83 |
AUTORE=yes |
|
| 84 |
else |
|
| 85 |
AUTORE=no |
|
| 86 |
fi |
|
| 87 |
fi |
|
| 88 |
|
|
| 89 |
if yesorno "Optimize" "n" |
|
| 90 |
then |
|
| 91 |
opt_flags=' -O2' |
|
| 92 |
else |
|
| 93 |
opt_flags='' |
|
| 94 |
fi |
|
| 95 |
|
|
| 96 |
if yesorno "Stop on warning" "y" |
|
| 97 |
then |
|
| 98 |
werror_flags=' -Werror' |
|
| 99 |
else |
|
| 100 |
werror_flags='' |
|
| 101 |
fi |
|
| 102 |
|
|
| 103 |
cxx_flags="CXXFLAGS=-ggdb$opt_flags$werror_flags" |
|
| 104 |
|
|
| 105 |
if [ -f ${COIN_OR_PREFIX}/include/coin/config_coinutils.h ]; then
|
|
| 106 |
if yesorno "Use COIN-OR (CBC/CLP)" "n" |
|
| 107 |
then |
|
| 108 |
coin_flag="--with-coin=$COIN_OR_PREFIX" |
|
| 109 |
else |
|
| 110 |
coin_flag="" |
|
| 111 |
fi |
|
| 112 |
else |
|
| 113 |
coin_flag="" |
|
| 114 |
fi |
|
| 115 |
|
|
| 116 |
if [ -f ${SOPLEX_PREFIX}/src/soplex.h ]; then
|
|
| 117 |
if yesorno "Use Soplex" "n" |
|
| 118 |
then |
|
| 119 |
soplex_flag="--with-soplex=$SOPLEX_PREFIX" |
|
| 120 |
else |
|
| 121 |
soplex_flag="" |
|
| 122 |
fi |
|
| 123 |
else |
|
| 124 |
soplex_flag="" |
|
| 125 |
fi |
|
| 126 |
|
|
| 127 |
if [ "x$AUTORE" == "xyes" ]; then |
|
| 128 |
autoreconf -vif; |
|
| 129 |
fi |
|
| 130 |
${CONFIGURE_PATH}/configure --prefix=$LEMON_INSTALL_PREFIX \
|
|
| 131 |
"$cxx_flags" \ |
|
| 132 |
$coin_flag \ |
|
| 133 |
$soplex_flag \ |
|
| 134 |
$* |
| 1 |
#!/bin/bash |
|
| 2 |
# |
|
| 3 |
# This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
# |
|
| 5 |
# Copyright (C) 2003-2009 |
|
| 6 |
# Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
# (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
# |
|
| 9 |
# Permission to use, modify and distribute this software is granted |
|
| 10 |
# provided that this copyright notice appears in all copies. For |
|
| 11 |
# precise terms see the accompanying LICENSE file. |
|
| 12 |
# |
|
| 13 |
# This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
# express or implied, and with no claim as to its suitability for any |
|
| 15 |
# purpose. |
|
| 16 |
|
|
| 17 |
set -e |
|
| 18 |
|
|
| 19 |
if [ $# = 0 ]; then |
|
| 20 |
echo "Usage: $0 release-id" |
|
| 21 |
exit 1 |
|
| 22 |
else |
|
| 23 |
export LEMON_VERSION=$1 |
|
| 24 |
fi |
|
| 25 |
|
|
| 26 |
echo '*****************************************************************' |
|
| 27 |
echo ' Start making release tarballs for version '${LEMON_VERSION}
|
|
| 28 |
echo '*****************************************************************' |
|
| 29 |
|
|
| 30 |
autoreconf -vif |
|
| 31 |
./configure |
|
| 32 |
|
|
| 33 |
make |
|
| 34 |
make html |
|
| 35 |
make distcheck |
|
| 36 |
tar xf lemon-${LEMON_VERSION}.tar.gz
|
|
| 37 |
zip -r lemon-${LEMON_VERSION}.zip lemon-${LEMON_VERSION}
|
|
| 38 |
mv lemon-${LEMON_VERSION}/doc/html lemon-doc-${LEMON_VERSION}
|
|
| 39 |
tar czf lemon-doc-${LEMON_VERSION}.tar.gz lemon-doc-${LEMON_VERSION}
|
|
| 40 |
zip -r lemon-doc-${LEMON_VERSION}.zip lemon-doc-${LEMON_VERSION}
|
|
| 41 |
tar czf lemon-nodoc-${LEMON_VERSION}.tar.gz lemon-${LEMON_VERSION}
|
|
| 42 |
zip -r lemon-nodoc-${LEMON_VERSION}.zip lemon-${LEMON_VERSION}
|
|
| 43 |
hg tag -m 'LEMON '${LEMON_VERSION}' released ('$(hg par --template="{node|short}")' tagged as r'${LEMON_VERSION}')' r${LEMON_VERSION}
|
|
| 44 |
|
|
| 45 |
rm -rf lemon-${LEMON_VERSION} lemon-doc-${LEMON_VERSION}
|
|
| 46 |
|
|
| 47 |
echo '*****************************************************************' |
|
| 48 |
echo ' Release '${LEMON_VERSION}' has been created'
|
|
| 49 |
echo '*****************************************************************' |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#include <lemon/concepts/digraph.h> |
|
| 20 |
#include <lemon/smart_graph.h> |
|
| 21 |
#include <lemon/list_graph.h> |
|
| 22 |
#include <lemon/lgf_reader.h> |
|
| 23 |
#include <lemon/bellman_ford.h> |
|
| 24 |
#include <lemon/path.h> |
|
| 25 |
|
|
| 26 |
#include "graph_test.h" |
|
| 27 |
#include "test_tools.h" |
|
| 28 |
|
|
| 29 |
using namespace lemon; |
|
| 30 |
|
|
| 31 |
char test_lgf[] = |
|
| 32 |
"@nodes\n" |
|
| 33 |
"label\n" |
|
| 34 |
"0\n" |
|
| 35 |
"1\n" |
|
| 36 |
"2\n" |
|
| 37 |
"3\n" |
|
| 38 |
"4\n" |
|
| 39 |
"@arcs\n" |
|
| 40 |
" length\n" |
|
| 41 |
"0 1 3\n" |
|
| 42 |
"1 2 -3\n" |
|
| 43 |
"1 2 -5\n" |
|
| 44 |
"1 3 -2\n" |
|
| 45 |
"0 2 -1\n" |
|
| 46 |
"1 2 -4\n" |
|
| 47 |
"0 3 2\n" |
|
| 48 |
"4 2 -5\n" |
|
| 49 |
"2 3 1\n" |
|
| 50 |
"@attributes\n" |
|
| 51 |
"source 0\n" |
|
| 52 |
"target 3\n"; |
|
| 53 |
|
|
| 54 |
|
|
| 55 |
void checkBellmanFordCompile() |
|
| 56 |
{
|
|
| 57 |
typedef int Value; |
|
| 58 |
typedef concepts::Digraph Digraph; |
|
| 59 |
typedef concepts::ReadMap<Digraph::Arc,Value> LengthMap; |
|
| 60 |
typedef BellmanFord<Digraph, LengthMap> BF; |
|
| 61 |
typedef Digraph::Node Node; |
|
| 62 |
typedef Digraph::Arc Arc; |
|
| 63 |
|
|
| 64 |
Digraph gr; |
|
| 65 |
Node s, t, n; |
|
| 66 |
Arc e; |
|
| 67 |
Value l; |
|
| 68 |
int k; |
|
| 69 |
bool b; |
|
| 70 |
BF::DistMap d(gr); |
|
| 71 |
BF::PredMap p(gr); |
|
| 72 |
LengthMap length; |
|
| 73 |
concepts::Path<Digraph> pp; |
|
| 74 |
|
|
| 75 |
{
|
|
| 76 |
BF bf_test(gr,length); |
|
| 77 |
const BF& const_bf_test = bf_test; |
|
| 78 |
|
|
| 79 |
bf_test.run(s); |
|
| 80 |
bf_test.run(s,k); |
|
| 81 |
|
|
| 82 |
bf_test.init(); |
|
| 83 |
bf_test.addSource(s); |
|
| 84 |
bf_test.addSource(s, 1); |
|
| 85 |
b = bf_test.processNextRound(); |
|
| 86 |
b = bf_test.processNextWeakRound(); |
|
| 87 |
|
|
| 88 |
bf_test.start(); |
|
| 89 |
bf_test.checkedStart(); |
|
| 90 |
bf_test.limitedStart(k); |
|
| 91 |
|
|
| 92 |
l = const_bf_test.dist(t); |
|
| 93 |
e = const_bf_test.predArc(t); |
|
| 94 |
s = const_bf_test.predNode(t); |
|
| 95 |
b = const_bf_test.reached(t); |
|
| 96 |
d = const_bf_test.distMap(); |
|
| 97 |
p = const_bf_test.predMap(); |
|
| 98 |
pp = const_bf_test.path(t); |
|
| 99 |
pp = const_bf_test.negativeCycle(); |
|
| 100 |
|
|
| 101 |
for (BF::ActiveIt it(const_bf_test); it != INVALID; ++it) {}
|
|
| 102 |
} |
|
| 103 |
{
|
|
| 104 |
BF::SetPredMap<concepts::ReadWriteMap<Node,Arc> > |
|
| 105 |
::SetDistMap<concepts::ReadWriteMap<Node,Value> > |
|
| 106 |
::SetOperationTraits<BellmanFordDefaultOperationTraits<Value> > |
|
| 107 |
::Create bf_test(gr,length); |
|
| 108 |
|
|
| 109 |
LengthMap length_map; |
|
| 110 |
concepts::ReadWriteMap<Node,Arc> pred_map; |
|
| 111 |
concepts::ReadWriteMap<Node,Value> dist_map; |
|
| 112 |
|
|
| 113 |
bf_test |
|
| 114 |
.lengthMap(length_map) |
|
| 115 |
.predMap(pred_map) |
|
| 116 |
.distMap(dist_map); |
|
| 117 |
|
|
| 118 |
bf_test.run(s); |
|
| 119 |
bf_test.run(s,k); |
|
| 120 |
|
|
| 121 |
bf_test.init(); |
|
| 122 |
bf_test.addSource(s); |
|
| 123 |
bf_test.addSource(s, 1); |
|
| 124 |
b = bf_test.processNextRound(); |
|
| 125 |
b = bf_test.processNextWeakRound(); |
|
| 126 |
|
|
| 127 |
bf_test.start(); |
|
| 128 |
bf_test.checkedStart(); |
|
| 129 |
bf_test.limitedStart(k); |
|
| 130 |
|
|
| 131 |
l = bf_test.dist(t); |
|
| 132 |
e = bf_test.predArc(t); |
|
| 133 |
s = bf_test.predNode(t); |
|
| 134 |
b = bf_test.reached(t); |
|
| 135 |
pp = bf_test.path(t); |
|
| 136 |
pp = bf_test.negativeCycle(); |
|
| 137 |
} |
|
| 138 |
} |
|
| 139 |
|
|
| 140 |
void checkBellmanFordFunctionCompile() |
|
| 141 |
{
|
|
| 142 |
typedef int Value; |
|
| 143 |
typedef concepts::Digraph Digraph; |
|
| 144 |
typedef Digraph::Arc Arc; |
|
| 145 |
typedef Digraph::Node Node; |
|
| 146 |
typedef concepts::ReadMap<Digraph::Arc,Value> LengthMap; |
|
| 147 |
|
|
| 148 |
Digraph g; |
|
| 149 |
bool b; |
|
| 150 |
bellmanFord(g,LengthMap()).run(Node()); |
|
| 151 |
b = bellmanFord(g,LengthMap()).run(Node(),Node()); |
|
| 152 |
bellmanFord(g,LengthMap()) |
|
| 153 |
.predMap(concepts::ReadWriteMap<Node,Arc>()) |
|
| 154 |
.distMap(concepts::ReadWriteMap<Node,Value>()) |
|
| 155 |
.run(Node()); |
|
| 156 |
b=bellmanFord(g,LengthMap()) |
|
| 157 |
.predMap(concepts::ReadWriteMap<Node,Arc>()) |
|
| 158 |
.distMap(concepts::ReadWriteMap<Node,Value>()) |
|
| 159 |
.path(concepts::Path<Digraph>()) |
|
| 160 |
.dist(Value()) |
|
| 161 |
.run(Node(),Node()); |
|
| 162 |
} |
|
| 163 |
|
|
| 164 |
|
|
| 165 |
template <typename Digraph, typename Value> |
|
| 166 |
void checkBellmanFord() {
|
|
| 167 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
|
| 168 |
typedef typename Digraph::template ArcMap<Value> LengthMap; |
|
| 169 |
|
|
| 170 |
Digraph gr; |
|
| 171 |
Node s, t; |
|
| 172 |
LengthMap length(gr); |
|
| 173 |
|
|
| 174 |
std::istringstream input(test_lgf); |
|
| 175 |
digraphReader(gr, input). |
|
| 176 |
arcMap("length", length).
|
|
| 177 |
node("source", s).
|
|
| 178 |
node("target", t).
|
|
| 179 |
run(); |
|
| 180 |
|
|
| 181 |
BellmanFord<Digraph, LengthMap> |
|
| 182 |
bf(gr, length); |
|
| 183 |
bf.run(s); |
|
| 184 |
Path<Digraph> p = bf.path(t); |
|
| 185 |
|
|
| 186 |
check(bf.reached(t) && bf.dist(t) == -1, "Bellman-Ford found a wrong path."); |
|
| 187 |
check(p.length() == 3, "path() found a wrong path."); |
|
| 188 |
check(checkPath(gr, p), "path() found a wrong path."); |
|
| 189 |
check(pathSource(gr, p) == s, "path() found a wrong path."); |
|
| 190 |
check(pathTarget(gr, p) == t, "path() found a wrong path."); |
|
| 191 |
|
|
| 192 |
ListPath<Digraph> path; |
|
| 193 |
Value dist; |
|
| 194 |
bool reached = bellmanFord(gr,length).path(path).dist(dist).run(s,t); |
|
| 195 |
|
|
| 196 |
check(reached && dist == -1, "Bellman-Ford found a wrong path."); |
|
| 197 |
check(path.length() == 3, "path() found a wrong path."); |
|
| 198 |
check(checkPath(gr, path), "path() found a wrong path."); |
|
| 199 |
check(pathSource(gr, path) == s, "path() found a wrong path."); |
|
| 200 |
check(pathTarget(gr, path) == t, "path() found a wrong path."); |
|
| 201 |
|
|
| 202 |
for(ArcIt e(gr); e!=INVALID; ++e) {
|
|
| 203 |
Node u=gr.source(e); |
|
| 204 |
Node v=gr.target(e); |
|
| 205 |
check(!bf.reached(u) || (bf.dist(v) - bf.dist(u) <= length[e]), |
|
| 206 |
"Wrong output. dist(target)-dist(source)-arc_length=" << |
|
| 207 |
bf.dist(v) - bf.dist(u) - length[e]); |
|
| 208 |
} |
|
| 209 |
|
|
| 210 |
for(NodeIt v(gr); v!=INVALID; ++v) {
|
|
| 211 |
if (bf.reached(v)) {
|
|
| 212 |
check(v==s || bf.predArc(v)!=INVALID, "Wrong tree."); |
|
| 213 |
if (bf.predArc(v)!=INVALID ) {
|
|
| 214 |
Arc e=bf.predArc(v); |
|
| 215 |
Node u=gr.source(e); |
|
| 216 |
check(u==bf.predNode(v),"Wrong tree."); |
|
| 217 |
check(bf.dist(v) - bf.dist(u) == length[e], |
|
| 218 |
"Wrong distance! Difference: " << |
|
| 219 |
bf.dist(v) - bf.dist(u) - length[e]); |
|
| 220 |
} |
|
| 221 |
} |
|
| 222 |
} |
|
| 223 |
} |
|
| 224 |
|
|
| 225 |
void checkBellmanFordNegativeCycle() {
|
|
| 226 |
DIGRAPH_TYPEDEFS(SmartDigraph); |
|
| 227 |
|
|
| 228 |
SmartDigraph gr; |
|
| 229 |
IntArcMap length(gr); |
|
| 230 |
|
|
| 231 |
Node n1 = gr.addNode(); |
|
| 232 |
Node n2 = gr.addNode(); |
|
| 233 |
Node n3 = gr.addNode(); |
|
| 234 |
Node n4 = gr.addNode(); |
|
| 235 |
|
|
| 236 |
Arc a1 = gr.addArc(n1, n2); |
|
| 237 |
Arc a2 = gr.addArc(n2, n2); |
|
| 238 |
|
|
| 239 |
length[a1] = 2; |
|
| 240 |
length[a2] = -1; |
|
| 241 |
|
|
| 242 |
{
|
|
| 243 |
BellmanFord<SmartDigraph, IntArcMap> bf(gr, length); |
|
| 244 |
bf.run(n1); |
|
| 245 |
StaticPath<SmartDigraph> p = bf.negativeCycle(); |
|
| 246 |
check(p.length() == 1 && p.front() == p.back() && p.front() == a2, |
|
| 247 |
"Wrong negative cycle."); |
|
| 248 |
} |
|
| 249 |
|
|
| 250 |
length[a2] = 0; |
|
| 251 |
|
|
| 252 |
{
|
|
| 253 |
BellmanFord<SmartDigraph, IntArcMap> bf(gr, length); |
|
| 254 |
bf.run(n1); |
|
| 255 |
check(bf.negativeCycle().empty(), |
|
| 256 |
"Negative cycle should not be found."); |
|
| 257 |
} |
|
| 258 |
|
|
| 259 |
length[gr.addArc(n1, n3)] = 5; |
|
| 260 |
length[gr.addArc(n4, n3)] = 1; |
|
| 261 |
length[gr.addArc(n2, n4)] = 2; |
|
| 262 |
length[gr.addArc(n3, n2)] = -4; |
|
| 263 |
|
|
| 264 |
{
|
|
| 265 |
BellmanFord<SmartDigraph, IntArcMap> bf(gr, length); |
|
| 266 |
bf.init(); |
|
| 267 |
bf.addSource(n1); |
|
| 268 |
for (int i = 0; i < 4; ++i) {
|
|
| 269 |
check(bf.negativeCycle().empty(), |
|
| 270 |
"Negative cycle should not be found."); |
|
| 271 |
bf.processNextRound(); |
|
| 272 |
} |
|
| 273 |
StaticPath<SmartDigraph> p = bf.negativeCycle(); |
|
| 274 |
check(p.length() == 3, "Wrong negative cycle."); |
|
| 275 |
check(length[p.nth(0)] + length[p.nth(1)] + length[p.nth(2)] == -1, |
|
| 276 |
"Wrong negative cycle."); |
|
| 277 |
} |
|
| 278 |
} |
|
| 279 |
|
|
| 280 |
int main() {
|
|
| 281 |
checkBellmanFord<ListDigraph, int>(); |
|
| 282 |
checkBellmanFord<SmartDigraph, double>(); |
|
| 283 |
checkBellmanFordNegativeCycle(); |
|
| 284 |
return 0; |
|
| 285 |
} |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#include <lemon/connectivity.h> |
|
| 20 |
#include <lemon/list_graph.h> |
|
| 21 |
#include <lemon/adaptors.h> |
|
| 22 |
|
|
| 23 |
#include "test_tools.h" |
|
| 24 |
|
|
| 25 |
using namespace lemon; |
|
| 26 |
|
|
| 27 |
|
|
| 28 |
int main() |
|
| 29 |
{
|
|
| 30 |
typedef ListDigraph Digraph; |
|
| 31 |
typedef Undirector<Digraph> Graph; |
|
| 32 |
|
|
| 33 |
{
|
|
| 34 |
Digraph d; |
|
| 35 |
Digraph::NodeMap<int> order(d); |
|
| 36 |
Graph g(d); |
|
| 37 |
|
|
| 38 |
check(stronglyConnected(d), "The empty digraph is strongly connected"); |
|
| 39 |
check(countStronglyConnectedComponents(d) == 0, |
|
| 40 |
"The empty digraph has 0 strongly connected component"); |
|
| 41 |
check(connected(g), "The empty graph is connected"); |
|
| 42 |
check(countConnectedComponents(g) == 0, |
|
| 43 |
"The empty graph has 0 connected component"); |
|
| 44 |
|
|
| 45 |
check(biNodeConnected(g), "The empty graph is bi-node-connected"); |
|
| 46 |
check(countBiNodeConnectedComponents(g) == 0, |
|
| 47 |
"The empty graph has 0 bi-node-connected component"); |
|
| 48 |
check(biEdgeConnected(g), "The empty graph is bi-edge-connected"); |
|
| 49 |
check(countBiEdgeConnectedComponents(g) == 0, |
|
| 50 |
"The empty graph has 0 bi-edge-connected component"); |
|
| 51 |
|
|
| 52 |
check(dag(d), "The empty digraph is DAG."); |
|
| 53 |
check(checkedTopologicalSort(d, order), "The empty digraph is DAG."); |
|
| 54 |
check(loopFree(d), "The empty digraph is loop-free."); |
|
| 55 |
check(parallelFree(d), "The empty digraph is parallel-free."); |
|
| 56 |
check(simpleGraph(d), "The empty digraph is simple."); |
|
| 57 |
|
|
| 58 |
check(acyclic(g), "The empty graph is acyclic."); |
|
| 59 |
check(tree(g), "The empty graph is tree."); |
|
| 60 |
check(bipartite(g), "The empty graph is bipartite."); |
|
| 61 |
check(loopFree(g), "The empty graph is loop-free."); |
|
| 62 |
check(parallelFree(g), "The empty graph is parallel-free."); |
|
| 63 |
check(simpleGraph(g), "The empty graph is simple."); |
|
| 64 |
} |
|
| 65 |
|
|
| 66 |
{
|
|
| 67 |
Digraph d; |
|
| 68 |
Digraph::NodeMap<int> order(d); |
|
| 69 |
Graph g(d); |
|
| 70 |
Digraph::Node n = d.addNode(); |
|
| 71 |
|
|
| 72 |
check(stronglyConnected(d), "This digraph is strongly connected"); |
|
| 73 |
check(countStronglyConnectedComponents(d) == 1, |
|
| 74 |
"This digraph has 1 strongly connected component"); |
|
| 75 |
check(connected(g), "This graph is connected"); |
|
| 76 |
check(countConnectedComponents(g) == 1, |
|
| 77 |
"This graph has 1 connected component"); |
|
| 78 |
|
|
| 79 |
check(biNodeConnected(g), "This graph is bi-node-connected"); |
|
| 80 |
check(countBiNodeConnectedComponents(g) == 0, |
|
| 81 |
"This graph has 0 bi-node-connected component"); |
|
| 82 |
check(biEdgeConnected(g), "This graph is bi-edge-connected"); |
|
| 83 |
check(countBiEdgeConnectedComponents(g) == 1, |
|
| 84 |
"This graph has 1 bi-edge-connected component"); |
|
| 85 |
|
|
| 86 |
check(dag(d), "This digraph is DAG."); |
|
| 87 |
check(checkedTopologicalSort(d, order), "This digraph is DAG."); |
|
| 88 |
check(loopFree(d), "This digraph is loop-free."); |
|
| 89 |
check(parallelFree(d), "This digraph is parallel-free."); |
|
| 90 |
check(simpleGraph(d), "This digraph is simple."); |
|
| 91 |
|
|
| 92 |
check(acyclic(g), "This graph is acyclic."); |
|
| 93 |
check(tree(g), "This graph is tree."); |
|
| 94 |
check(bipartite(g), "This graph is bipartite."); |
|
| 95 |
check(loopFree(g), "This graph is loop-free."); |
|
| 96 |
check(parallelFree(g), "This graph is parallel-free."); |
|
| 97 |
check(simpleGraph(g), "This graph is simple."); |
|
| 98 |
} |
|
| 99 |
|
|
| 100 |
{
|
|
| 101 |
Digraph d; |
|
| 102 |
Digraph::NodeMap<int> order(d); |
|
| 103 |
Graph g(d); |
|
| 104 |
|
|
| 105 |
Digraph::Node n1 = d.addNode(); |
|
| 106 |
Digraph::Node n2 = d.addNode(); |
|
| 107 |
Digraph::Node n3 = d.addNode(); |
|
| 108 |
Digraph::Node n4 = d.addNode(); |
|
| 109 |
Digraph::Node n5 = d.addNode(); |
|
| 110 |
Digraph::Node n6 = d.addNode(); |
|
| 111 |
|
|
| 112 |
d.addArc(n1, n3); |
|
| 113 |
d.addArc(n3, n2); |
|
| 114 |
d.addArc(n2, n1); |
|
| 115 |
d.addArc(n4, n2); |
|
| 116 |
d.addArc(n4, n3); |
|
| 117 |
d.addArc(n5, n6); |
|
| 118 |
d.addArc(n6, n5); |
|
| 119 |
|
|
| 120 |
check(!stronglyConnected(d), "This digraph is not strongly connected"); |
|
| 121 |
check(countStronglyConnectedComponents(d) == 3, |
|
| 122 |
"This digraph has 3 strongly connected components"); |
|
| 123 |
check(!connected(g), "This graph is not connected"); |
|
| 124 |
check(countConnectedComponents(g) == 2, |
|
| 125 |
"This graph has 2 connected components"); |
|
| 126 |
|
|
| 127 |
check(!dag(d), "This digraph is not DAG."); |
|
| 128 |
check(!checkedTopologicalSort(d, order), "This digraph is not DAG."); |
|
| 129 |
check(loopFree(d), "This digraph is loop-free."); |
|
| 130 |
check(parallelFree(d), "This digraph is parallel-free."); |
|
| 131 |
check(simpleGraph(d), "This digraph is simple."); |
|
| 132 |
|
|
| 133 |
check(!acyclic(g), "This graph is not acyclic."); |
|
| 134 |
check(!tree(g), "This graph is not tree."); |
|
| 135 |
check(!bipartite(g), "This graph is not bipartite."); |
|
| 136 |
check(loopFree(g), "This graph is loop-free."); |
|
| 137 |
check(!parallelFree(g), "This graph is not parallel-free."); |
|
| 138 |
check(!simpleGraph(g), "This graph is not simple."); |
|
| 139 |
|
|
| 140 |
d.addArc(n3, n3); |
|
| 141 |
|
|
| 142 |
check(!loopFree(d), "This digraph is not loop-free."); |
|
| 143 |
check(!loopFree(g), "This graph is not loop-free."); |
|
| 144 |
check(!simpleGraph(d), "This digraph is not simple."); |
|
| 145 |
|
|
| 146 |
d.addArc(n3, n2); |
|
| 147 |
|
|
| 148 |
check(!parallelFree(d), "This digraph is not parallel-free."); |
|
| 149 |
} |
|
| 150 |
|
|
| 151 |
{
|
|
| 152 |
Digraph d; |
|
| 153 |
Digraph::ArcMap<bool> cutarcs(d, false); |
|
| 154 |
Graph g(d); |
|
| 155 |
|
|
| 156 |
Digraph::Node n1 = d.addNode(); |
|
| 157 |
Digraph::Node n2 = d.addNode(); |
|
| 158 |
Digraph::Node n3 = d.addNode(); |
|
| 159 |
Digraph::Node n4 = d.addNode(); |
|
| 160 |
Digraph::Node n5 = d.addNode(); |
|
| 161 |
Digraph::Node n6 = d.addNode(); |
|
| 162 |
Digraph::Node n7 = d.addNode(); |
|
| 163 |
Digraph::Node n8 = d.addNode(); |
|
| 164 |
|
|
| 165 |
d.addArc(n1, n2); |
|
| 166 |
d.addArc(n5, n1); |
|
| 167 |
d.addArc(n2, n8); |
|
| 168 |
d.addArc(n8, n5); |
|
| 169 |
d.addArc(n6, n4); |
|
| 170 |
d.addArc(n4, n6); |
|
| 171 |
d.addArc(n2, n5); |
|
| 172 |
d.addArc(n1, n8); |
|
| 173 |
d.addArc(n6, n7); |
|
| 174 |
d.addArc(n7, n6); |
|
| 175 |
|
|
| 176 |
check(!stronglyConnected(d), "This digraph is not strongly connected"); |
|
| 177 |
check(countStronglyConnectedComponents(d) == 3, |
|
| 178 |
"This digraph has 3 strongly connected components"); |
|
| 179 |
Digraph::NodeMap<int> scomp1(d); |
|
| 180 |
check(stronglyConnectedComponents(d, scomp1) == 3, |
|
| 181 |
"This digraph has 3 strongly connected components"); |
|
| 182 |
check(scomp1[n1] != scomp1[n3] && scomp1[n1] != scomp1[n4] && |
|
| 183 |
scomp1[n3] != scomp1[n4], "Wrong stronglyConnectedComponents()"); |
|
| 184 |
check(scomp1[n1] == scomp1[n2] && scomp1[n1] == scomp1[n5] && |
|
| 185 |
scomp1[n1] == scomp1[n8], "Wrong stronglyConnectedComponents()"); |
|
| 186 |
check(scomp1[n4] == scomp1[n6] && scomp1[n4] == scomp1[n7], |
|
| 187 |
"Wrong stronglyConnectedComponents()"); |
|
| 188 |
Digraph::ArcMap<bool> scut1(d, false); |
|
| 189 |
check(stronglyConnectedCutArcs(d, scut1) == 0, |
|
| 190 |
"This digraph has 0 strongly connected cut arc."); |
|
| 191 |
for (Digraph::ArcIt a(d); a != INVALID; ++a) {
|
|
| 192 |
check(!scut1[a], "Wrong stronglyConnectedCutArcs()"); |
|
| 193 |
} |
|
| 194 |
|
|
| 195 |
check(!connected(g), "This graph is not connected"); |
|
| 196 |
check(countConnectedComponents(g) == 3, |
|
| 197 |
"This graph has 3 connected components"); |
|
| 198 |
Graph::NodeMap<int> comp(g); |
|
| 199 |
check(connectedComponents(g, comp) == 3, |
|
| 200 |
"This graph has 3 connected components"); |
|
| 201 |
check(comp[n1] != comp[n3] && comp[n1] != comp[n4] && |
|
| 202 |
comp[n3] != comp[n4], "Wrong connectedComponents()"); |
|
| 203 |
check(comp[n1] == comp[n2] && comp[n1] == comp[n5] && |
|
| 204 |
comp[n1] == comp[n8], "Wrong connectedComponents()"); |
|
| 205 |
check(comp[n4] == comp[n6] && comp[n4] == comp[n7], |
|
| 206 |
"Wrong connectedComponents()"); |
|
| 207 |
|
|
| 208 |
cutarcs[d.addArc(n3, n1)] = true; |
|
| 209 |
cutarcs[d.addArc(n3, n5)] = true; |
|
| 210 |
cutarcs[d.addArc(n3, n8)] = true; |
|
| 211 |
cutarcs[d.addArc(n8, n6)] = true; |
|
| 212 |
cutarcs[d.addArc(n8, n7)] = true; |
|
| 213 |
|
|
| 214 |
check(!stronglyConnected(d), "This digraph is not strongly connected"); |
|
| 215 |
check(countStronglyConnectedComponents(d) == 3, |
|
| 216 |
"This digraph has 3 strongly connected components"); |
|
| 217 |
Digraph::NodeMap<int> scomp2(d); |
|
| 218 |
check(stronglyConnectedComponents(d, scomp2) == 3, |
|
| 219 |
"This digraph has 3 strongly connected components"); |
|
| 220 |
check(scomp2[n3] == 0, "Wrong stronglyConnectedComponents()"); |
|
| 221 |
check(scomp2[n1] == 1 && scomp2[n2] == 1 && scomp2[n5] == 1 && |
|
| 222 |
scomp2[n8] == 1, "Wrong stronglyConnectedComponents()"); |
|
| 223 |
check(scomp2[n4] == 2 && scomp2[n6] == 2 && scomp2[n7] == 2, |
|
| 224 |
"Wrong stronglyConnectedComponents()"); |
|
| 225 |
Digraph::ArcMap<bool> scut2(d, false); |
|
| 226 |
check(stronglyConnectedCutArcs(d, scut2) == 5, |
|
| 227 |
"This digraph has 5 strongly connected cut arcs."); |
|
| 228 |
for (Digraph::ArcIt a(d); a != INVALID; ++a) {
|
|
| 229 |
check(scut2[a] == cutarcs[a], "Wrong stronglyConnectedCutArcs()"); |
|
| 230 |
} |
|
| 231 |
} |
|
| 232 |
|
|
| 233 |
{
|
|
| 234 |
// DAG example for topological sort from the book New Algorithms |
|
| 235 |
// (T. H. Cormen, C. E. Leiserson, R. L. Rivest, C. Stein) |
|
| 236 |
Digraph d; |
|
| 237 |
Digraph::NodeMap<int> order(d); |
|
| 238 |
|
|
| 239 |
Digraph::Node belt = d.addNode(); |
|
| 240 |
Digraph::Node trousers = d.addNode(); |
|
| 241 |
Digraph::Node necktie = d.addNode(); |
|
| 242 |
Digraph::Node coat = d.addNode(); |
|
| 243 |
Digraph::Node socks = d.addNode(); |
|
| 244 |
Digraph::Node shirt = d.addNode(); |
|
| 245 |
Digraph::Node shoe = d.addNode(); |
|
| 246 |
Digraph::Node watch = d.addNode(); |
|
| 247 |
Digraph::Node pants = d.addNode(); |
|
| 248 |
|
|
| 249 |
d.addArc(socks, shoe); |
|
| 250 |
d.addArc(pants, shoe); |
|
| 251 |
d.addArc(pants, trousers); |
|
| 252 |
d.addArc(trousers, shoe); |
|
| 253 |
d.addArc(trousers, belt); |
|
| 254 |
d.addArc(belt, coat); |
|
| 255 |
d.addArc(shirt, belt); |
|
| 256 |
d.addArc(shirt, necktie); |
|
| 257 |
d.addArc(necktie, coat); |
|
| 258 |
|
|
| 259 |
check(dag(d), "This digraph is DAG."); |
|
| 260 |
topologicalSort(d, order); |
|
| 261 |
for (Digraph::ArcIt a(d); a != INVALID; ++a) {
|
|
| 262 |
check(order[d.source(a)] < order[d.target(a)], |
|
| 263 |
"Wrong topologicalSort()"); |
|
| 264 |
} |
|
| 265 |
} |
|
| 266 |
|
|
| 267 |
{
|
|
| 268 |
ListGraph g; |
|
| 269 |
ListGraph::NodeMap<bool> map(g); |
|
| 270 |
|
|
| 271 |
ListGraph::Node n1 = g.addNode(); |
|
| 272 |
ListGraph::Node n2 = g.addNode(); |
|
| 273 |
ListGraph::Node n3 = g.addNode(); |
|
| 274 |
ListGraph::Node n4 = g.addNode(); |
|
| 275 |
ListGraph::Node n5 = g.addNode(); |
|
| 276 |
ListGraph::Node n6 = g.addNode(); |
|
| 277 |
ListGraph::Node n7 = g.addNode(); |
|
| 278 |
|
|
| 279 |
g.addEdge(n1, n3); |
|
| 280 |
g.addEdge(n1, n4); |
|
| 281 |
g.addEdge(n2, n5); |
|
| 282 |
g.addEdge(n3, n6); |
|
| 283 |
g.addEdge(n4, n6); |
|
| 284 |
g.addEdge(n4, n7); |
|
| 285 |
g.addEdge(n5, n7); |
|
| 286 |
|
|
| 287 |
check(bipartite(g), "This graph is bipartite"); |
|
| 288 |
check(bipartitePartitions(g, map), "This graph is bipartite"); |
|
| 289 |
|
|
| 290 |
check(map[n1] == map[n2] && map[n1] == map[n6] && map[n1] == map[n7], |
|
| 291 |
"Wrong bipartitePartitions()"); |
|
| 292 |
check(map[n3] == map[n4] && map[n3] == map[n5], |
|
| 293 |
"Wrong bipartitePartitions()"); |
|
| 294 |
} |
|
| 295 |
|
|
| 296 |
return 0; |
|
| 297 |
} |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#include <lemon/euler.h> |
|
| 20 |
#include <lemon/list_graph.h> |
|
| 21 |
#include <lemon/adaptors.h> |
|
| 22 |
#include "test_tools.h" |
|
| 23 |
|
|
| 24 |
using namespace lemon; |
|
| 25 |
|
|
| 26 |
template <typename Digraph> |
|
| 27 |
void checkDiEulerIt(const Digraph& g, |
|
| 28 |
const typename Digraph::Node& start = INVALID) |
|
| 29 |
{
|
|
| 30 |
typename Digraph::template ArcMap<int> visitationNumber(g, 0); |
|
| 31 |
|
|
| 32 |
DiEulerIt<Digraph> e(g, start); |
|
| 33 |
if (e == INVALID) return; |
|
| 34 |
typename Digraph::Node firstNode = g.source(e); |
|
| 35 |
typename Digraph::Node lastNode = g.target(e); |
|
| 36 |
if (start != INVALID) {
|
|
| 37 |
check(firstNode == start, "checkDiEulerIt: Wrong first node"); |
|
| 38 |
} |
|
| 39 |
|
|
| 40 |
for (; e != INVALID; ++e) {
|
|
| 41 |
if (e != INVALID) lastNode = g.target(e); |
|
| 42 |
++visitationNumber[e]; |
|
| 43 |
} |
|
| 44 |
|
|
| 45 |
check(firstNode == lastNode, |
|
| 46 |
"checkDiEulerIt: First and last nodes are not the same"); |
|
| 47 |
|
|
| 48 |
for (typename Digraph::ArcIt a(g); a != INVALID; ++a) |
|
| 49 |
{
|
|
| 50 |
check(visitationNumber[a] == 1, |
|
| 51 |
"checkDiEulerIt: Not visited or multiple times visited arc found"); |
|
| 52 |
} |
|
| 53 |
} |
|
| 54 |
|
|
| 55 |
template <typename Graph> |
|
| 56 |
void checkEulerIt(const Graph& g, |
|
| 57 |
const typename Graph::Node& start = INVALID) |
|
| 58 |
{
|
|
| 59 |
typename Graph::template EdgeMap<int> visitationNumber(g, 0); |
|
| 60 |
|
|
| 61 |
EulerIt<Graph> e(g, start); |
|
| 62 |
if (e == INVALID) return; |
|
| 63 |
typename Graph::Node firstNode = g.source(typename Graph::Arc(e)); |
|
| 64 |
typename Graph::Node lastNode = g.target(typename Graph::Arc(e)); |
|
| 65 |
if (start != INVALID) {
|
|
| 66 |
check(firstNode == start, "checkEulerIt: Wrong first node"); |
|
| 67 |
} |
|
| 68 |
|
|
| 69 |
for (; e != INVALID; ++e) {
|
|
| 70 |
if (e != INVALID) lastNode = g.target(typename Graph::Arc(e)); |
|
| 71 |
++visitationNumber[e]; |
|
| 72 |
} |
|
| 73 |
|
|
| 74 |
check(firstNode == lastNode, |
|
| 75 |
"checkEulerIt: First and last nodes are not the same"); |
|
| 76 |
|
|
| 77 |
for (typename Graph::EdgeIt e(g); e != INVALID; ++e) |
|
| 78 |
{
|
|
| 79 |
check(visitationNumber[e] == 1, |
|
| 80 |
"checkEulerIt: Not visited or multiple times visited edge found"); |
|
| 81 |
} |
|
| 82 |
} |
|
| 83 |
|
|
| 84 |
int main() |
|
| 85 |
{
|
|
| 86 |
typedef ListDigraph Digraph; |
|
| 87 |
typedef Undirector<Digraph> Graph; |
|
| 88 |
|
|
| 89 |
{
|
|
| 90 |
Digraph d; |
|
| 91 |
Graph g(d); |
|
| 92 |
|
|
| 93 |
checkDiEulerIt(d); |
|
| 94 |
checkDiEulerIt(g); |
|
| 95 |
checkEulerIt(g); |
|
| 96 |
|
|
| 97 |
check(eulerian(d), "This graph is Eulerian"); |
|
| 98 |
check(eulerian(g), "This graph is Eulerian"); |
|
| 99 |
} |
|
| 100 |
{
|
|
| 101 |
Digraph d; |
|
| 102 |
Graph g(d); |
|
| 103 |
Digraph::Node n = d.addNode(); |
|
| 104 |
|
|
| 105 |
checkDiEulerIt(d); |
|
| 106 |
checkDiEulerIt(g); |
|
| 107 |
checkEulerIt(g); |
|
| 108 |
|
|
| 109 |
check(eulerian(d), "This graph is Eulerian"); |
|
| 110 |
check(eulerian(g), "This graph is Eulerian"); |
|
| 111 |
} |
|
| 112 |
{
|
|
| 113 |
Digraph d; |
|
| 114 |
Graph g(d); |
|
| 115 |
Digraph::Node n = d.addNode(); |
|
| 116 |
d.addArc(n, n); |
|
| 117 |
|
|
| 118 |
checkDiEulerIt(d); |
|
| 119 |
checkDiEulerIt(g); |
|
| 120 |
checkEulerIt(g); |
|
| 121 |
|
|
| 122 |
check(eulerian(d), "This graph is Eulerian"); |
|
| 123 |
check(eulerian(g), "This graph is Eulerian"); |
|
| 124 |
} |
|
| 125 |
{
|
|
| 126 |
Digraph d; |
|
| 127 |
Graph g(d); |
|
| 128 |
Digraph::Node n1 = d.addNode(); |
|
| 129 |
Digraph::Node n2 = d.addNode(); |
|
| 130 |
Digraph::Node n3 = d.addNode(); |
|
| 131 |
|
|
| 132 |
d.addArc(n1, n2); |
|
| 133 |
d.addArc(n2, n1); |
|
| 134 |
d.addArc(n2, n3); |
|
| 135 |
d.addArc(n3, n2); |
|
| 136 |
|
|
| 137 |
checkDiEulerIt(d); |
|
| 138 |
checkDiEulerIt(d, n2); |
|
| 139 |
checkDiEulerIt(g); |
|
| 140 |
checkDiEulerIt(g, n2); |
|
| 141 |
checkEulerIt(g); |
|
| 142 |
checkEulerIt(g, n2); |
|
| 143 |
|
|
| 144 |
check(eulerian(d), "This graph is Eulerian"); |
|
| 145 |
check(eulerian(g), "This graph is Eulerian"); |
|
| 146 |
} |
|
| 147 |
{
|
|
| 148 |
Digraph d; |
|
| 149 |
Graph g(d); |
|
| 150 |
Digraph::Node n1 = d.addNode(); |
|
| 151 |
Digraph::Node n2 = d.addNode(); |
|
| 152 |
Digraph::Node n3 = d.addNode(); |
|
| 153 |
Digraph::Node n4 = d.addNode(); |
|
| 154 |
Digraph::Node n5 = d.addNode(); |
|
| 155 |
Digraph::Node n6 = d.addNode(); |
|
| 156 |
|
|
| 157 |
d.addArc(n1, n2); |
|
| 158 |
d.addArc(n2, n4); |
|
| 159 |
d.addArc(n1, n3); |
|
| 160 |
d.addArc(n3, n4); |
|
| 161 |
d.addArc(n4, n1); |
|
| 162 |
d.addArc(n3, n5); |
|
| 163 |
d.addArc(n5, n2); |
|
| 164 |
d.addArc(n4, n6); |
|
| 165 |
d.addArc(n2, n6); |
|
| 166 |
d.addArc(n6, n1); |
|
| 167 |
d.addArc(n6, n3); |
|
| 168 |
|
|
| 169 |
checkDiEulerIt(d); |
|
| 170 |
checkDiEulerIt(d, n1); |
|
| 171 |
checkDiEulerIt(d, n5); |
|
| 172 |
|
|
| 173 |
checkDiEulerIt(g); |
|
| 174 |
checkDiEulerIt(g, n1); |
|
| 175 |
checkDiEulerIt(g, n5); |
|
| 176 |
checkEulerIt(g); |
|
| 177 |
checkEulerIt(g, n1); |
|
| 178 |
checkEulerIt(g, n5); |
|
| 179 |
|
|
| 180 |
check(eulerian(d), "This graph is Eulerian"); |
|
| 181 |
check(eulerian(g), "This graph is Eulerian"); |
|
| 182 |
} |
|
| 183 |
{
|
|
| 184 |
Digraph d; |
|
| 185 |
Graph g(d); |
|
| 186 |
Digraph::Node n0 = d.addNode(); |
|
| 187 |
Digraph::Node n1 = d.addNode(); |
|
| 188 |
Digraph::Node n2 = d.addNode(); |
|
| 189 |
Digraph::Node n3 = d.addNode(); |
|
| 190 |
Digraph::Node n4 = d.addNode(); |
|
| 191 |
Digraph::Node n5 = d.addNode(); |
|
| 192 |
|
|
| 193 |
d.addArc(n1, n2); |
|
| 194 |
d.addArc(n2, n3); |
|
| 195 |
d.addArc(n3, n1); |
|
| 196 |
|
|
| 197 |
checkDiEulerIt(d); |
|
| 198 |
checkDiEulerIt(d, n2); |
|
| 199 |
|
|
| 200 |
checkDiEulerIt(g); |
|
| 201 |
checkDiEulerIt(g, n2); |
|
| 202 |
checkEulerIt(g); |
|
| 203 |
checkEulerIt(g, n2); |
|
| 204 |
|
|
| 205 |
check(!eulerian(d), "This graph is not Eulerian"); |
|
| 206 |
check(!eulerian(g), "This graph is not Eulerian"); |
|
| 207 |
} |
|
| 208 |
{
|
|
| 209 |
Digraph d; |
|
| 210 |
Graph g(d); |
|
| 211 |
Digraph::Node n1 = d.addNode(); |
|
| 212 |
Digraph::Node n2 = d.addNode(); |
|
| 213 |
Digraph::Node n3 = d.addNode(); |
|
| 214 |
|
|
| 215 |
d.addArc(n1, n2); |
|
| 216 |
d.addArc(n2, n3); |
|
| 217 |
|
|
| 218 |
check(!eulerian(d), "This graph is not Eulerian"); |
|
| 219 |
check(!eulerian(g), "This graph is not Eulerian"); |
|
| 220 |
} |
|
| 221 |
|
|
| 222 |
return 0; |
|
| 223 |
} |
| 1 |
#include <iostream> |
|
| 2 |
|
|
| 3 |
#include "test_tools.h" |
|
| 4 |
#include <lemon/smart_graph.h> |
|
| 5 |
#include <lemon/concepts/graph.h> |
|
| 6 |
#include <lemon/concepts/maps.h> |
|
| 7 |
#include <lemon/lgf_reader.h> |
|
| 8 |
#include <lemon/gomory_hu.h> |
|
| 9 |
#include <cstdlib> |
|
| 10 |
|
|
| 11 |
using namespace std; |
|
| 12 |
using namespace lemon; |
|
| 13 |
|
|
| 14 |
typedef SmartGraph Graph; |
|
| 15 |
|
|
| 16 |
char test_lgf[] = |
|
| 17 |
"@nodes\n" |
|
| 18 |
"label\n" |
|
| 19 |
"0\n" |
|
| 20 |
"1\n" |
|
| 21 |
"2\n" |
|
| 22 |
"3\n" |
|
| 23 |
"4\n" |
|
| 24 |
"@arcs\n" |
|
| 25 |
" label capacity\n" |
|
| 26 |
"0 1 0 1\n" |
|
| 27 |
"1 2 1 1\n" |
|
| 28 |
"2 3 2 1\n" |
|
| 29 |
"0 3 4 5\n" |
|
| 30 |
"0 3 5 10\n" |
|
| 31 |
"0 3 6 7\n" |
|
| 32 |
"4 2 7 1\n" |
|
| 33 |
"@attributes\n" |
|
| 34 |
"source 0\n" |
|
| 35 |
"target 3\n"; |
|
| 36 |
|
|
| 37 |
void checkGomoryHuCompile() |
|
| 38 |
{
|
|
| 39 |
typedef int Value; |
|
| 40 |
typedef concepts::Graph Graph; |
|
| 41 |
|
|
| 42 |
typedef Graph::Node Node; |
|
| 43 |
typedef Graph::Edge Edge; |
|
| 44 |
typedef concepts::ReadMap<Edge, Value> CapMap; |
|
| 45 |
typedef concepts::ReadWriteMap<Node, bool> CutMap; |
|
| 46 |
|
|
| 47 |
Graph g; |
|
| 48 |
Node n; |
|
| 49 |
CapMap cap; |
|
| 50 |
CutMap cut; |
|
| 51 |
Value v; |
|
| 52 |
int d; |
|
| 53 |
|
|
| 54 |
GomoryHu<Graph, CapMap> gh_test(g, cap); |
|
| 55 |
const GomoryHu<Graph, CapMap>& |
|
| 56 |
const_gh_test = gh_test; |
|
| 57 |
|
|
| 58 |
gh_test.run(); |
|
| 59 |
|
|
| 60 |
n = const_gh_test.predNode(n); |
|
| 61 |
v = const_gh_test.predValue(n); |
|
| 62 |
d = const_gh_test.rootDist(n); |
|
| 63 |
v = const_gh_test.minCutValue(n, n); |
|
| 64 |
v = const_gh_test.minCutMap(n, n, cut); |
|
| 65 |
} |
|
| 66 |
|
|
| 67 |
GRAPH_TYPEDEFS(Graph); |
|
| 68 |
typedef Graph::EdgeMap<int> IntEdgeMap; |
|
| 69 |
typedef Graph::NodeMap<bool> BoolNodeMap; |
|
| 70 |
|
|
| 71 |
int cutValue(const Graph& graph, const BoolNodeMap& cut, |
|
| 72 |
const IntEdgeMap& capacity) {
|
|
| 73 |
|
|
| 74 |
int sum = 0; |
|
| 75 |
for (EdgeIt e(graph); e != INVALID; ++e) {
|
|
| 76 |
Node s = graph.u(e); |
|
| 77 |
Node t = graph.v(e); |
|
| 78 |
|
|
| 79 |
if (cut[s] != cut[t]) {
|
|
| 80 |
sum += capacity[e]; |
|
| 81 |
} |
|
| 82 |
} |
|
| 83 |
return sum; |
|
| 84 |
} |
|
| 85 |
|
|
| 86 |
|
|
| 87 |
int main() {
|
|
| 88 |
Graph graph; |
|
| 89 |
IntEdgeMap capacity(graph); |
|
| 90 |
|
|
| 91 |
std::istringstream input(test_lgf); |
|
| 92 |
GraphReader<Graph>(graph, input). |
|
| 93 |
edgeMap("capacity", capacity).run();
|
|
| 94 |
|
|
| 95 |
GomoryHu<Graph> ght(graph, capacity); |
|
| 96 |
ght.run(); |
|
| 97 |
|
|
| 98 |
for (NodeIt u(graph); u != INVALID; ++u) {
|
|
| 99 |
for (NodeIt v(graph); v != u; ++v) {
|
|
| 100 |
Preflow<Graph, IntEdgeMap> pf(graph, capacity, u, v); |
|
| 101 |
pf.runMinCut(); |
|
| 102 |
BoolNodeMap cm(graph); |
|
| 103 |
ght.minCutMap(u, v, cm); |
|
| 104 |
check(pf.flowValue() == ght.minCutValue(u, v), "Wrong cut 1"); |
|
| 105 |
check(cm[u] != cm[v], "Wrong cut 2"); |
|
| 106 |
check(pf.flowValue() == cutValue(graph, cm, capacity), "Wrong cut 3"); |
|
| 107 |
|
|
| 108 |
int sum=0; |
|
| 109 |
for(GomoryHu<Graph>::MinCutEdgeIt a(ght, u, v);a!=INVALID;++a) |
|
| 110 |
sum+=capacity[a]; |
|
| 111 |
check(sum == ght.minCutValue(u, v), "Problem with MinCutEdgeIt"); |
|
| 112 |
|
|
| 113 |
sum=0; |
|
| 114 |
for(GomoryHu<Graph>::MinCutNodeIt n(ght, u, v,true);n!=INVALID;++n) |
|
| 115 |
sum++; |
|
| 116 |
for(GomoryHu<Graph>::MinCutNodeIt n(ght, u, v,false);n!=INVALID;++n) |
|
| 117 |
sum++; |
|
| 118 |
check(sum == countNodes(graph), "Problem with MinCutNodeIt"); |
|
| 119 |
} |
|
| 120 |
} |
|
| 121 |
|
|
| 122 |
return 0; |
|
| 123 |
} |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2008 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#include <iostream> |
|
| 20 |
#include <set> |
|
| 21 |
#include <vector> |
|
| 22 |
#include <iterator> |
|
| 23 |
|
|
| 24 |
#include <lemon/smart_graph.h> |
|
| 25 |
#include <lemon/min_cost_arborescence.h> |
|
| 26 |
#include <lemon/lgf_reader.h> |
|
| 27 |
#include <lemon/concepts/digraph.h> |
|
| 28 |
|
|
| 29 |
#include "test_tools.h" |
|
| 30 |
|
|
| 31 |
using namespace lemon; |
|
| 32 |
using namespace std; |
|
| 33 |
|
|
| 34 |
const char test_lgf[] = |
|
| 35 |
"@nodes\n" |
|
| 36 |
"label\n" |
|
| 37 |
"0\n" |
|
| 38 |
"1\n" |
|
| 39 |
"2\n" |
|
| 40 |
"3\n" |
|
| 41 |
"4\n" |
|
| 42 |
"5\n" |
|
| 43 |
"6\n" |
|
| 44 |
"7\n" |
|
| 45 |
"8\n" |
|
| 46 |
"9\n" |
|
| 47 |
"@arcs\n" |
|
| 48 |
" label cost\n" |
|
| 49 |
"1 8 0 107\n" |
|
| 50 |
"0 3 1 70\n" |
|
| 51 |
"2 1 2 46\n" |
|
| 52 |
"4 1 3 28\n" |
|
| 53 |
"4 4 4 91\n" |
|
| 54 |
"3 9 5 76\n" |
|
| 55 |
"9 8 6 61\n" |
|
| 56 |
"8 1 7 39\n" |
|
| 57 |
"9 8 8 74\n" |
|
| 58 |
"8 0 9 39\n" |
|
| 59 |
"4 3 10 45\n" |
|
| 60 |
"2 2 11 34\n" |
|
| 61 |
"0 1 12 100\n" |
|
| 62 |
"6 3 13 95\n" |
|
| 63 |
"4 1 14 22\n" |
|
| 64 |
"1 1 15 31\n" |
|
| 65 |
"7 2 16 51\n" |
|
| 66 |
"2 6 17 29\n" |
|
| 67 |
"8 3 18 115\n" |
|
| 68 |
"6 9 19 32\n" |
|
| 69 |
"1 1 20 60\n" |
|
| 70 |
"0 3 21 40\n" |
|
| 71 |
"@attributes\n" |
|
| 72 |
"source 0\n"; |
|
| 73 |
|
|
| 74 |
|
|
| 75 |
void checkMinCostArborescenceCompile() |
|
| 76 |
{
|
|
| 77 |
typedef double VType; |
|
| 78 |
typedef concepts::Digraph Digraph; |
|
| 79 |
typedef concepts::ReadMap<Digraph::Arc, VType> CostMap; |
|
| 80 |
typedef Digraph::Node Node; |
|
| 81 |
typedef Digraph::Arc Arc; |
|
| 82 |
typedef concepts::WriteMap<Digraph::Arc, bool> ArbMap; |
|
| 83 |
typedef concepts::ReadWriteMap<Digraph::Node, Digraph::Arc> PredMap; |
|
| 84 |
|
|
| 85 |
typedef MinCostArborescence<Digraph, CostMap>:: |
|
| 86 |
SetArborescenceMap<ArbMap>:: |
|
| 87 |
SetPredMap<PredMap>::Create MinCostArbType; |
|
| 88 |
|
|
| 89 |
Digraph g; |
|
| 90 |
Node s, n; |
|
| 91 |
Arc e; |
|
| 92 |
VType c; |
|
| 93 |
bool b; |
|
| 94 |
int i; |
|
| 95 |
CostMap cost; |
|
| 96 |
ArbMap arb; |
|
| 97 |
PredMap pred; |
|
| 98 |
|
|
| 99 |
MinCostArbType mcarb_test(g, cost); |
|
| 100 |
const MinCostArbType& const_mcarb_test = mcarb_test; |
|
| 101 |
|
|
| 102 |
mcarb_test |
|
| 103 |
.arborescenceMap(arb) |
|
| 104 |
.predMap(pred) |
|
| 105 |
.run(s); |
|
| 106 |
|
|
| 107 |
mcarb_test.init(); |
|
| 108 |
mcarb_test.addSource(s); |
|
| 109 |
mcarb_test.start(); |
|
| 110 |
n = mcarb_test.processNextNode(); |
|
| 111 |
b = const_mcarb_test.emptyQueue(); |
|
| 112 |
i = const_mcarb_test.queueSize(); |
|
| 113 |
|
|
| 114 |
c = const_mcarb_test.arborescenceCost(); |
|
| 115 |
b = const_mcarb_test.arborescence(e); |
|
| 116 |
e = const_mcarb_test.pred(n); |
|
| 117 |
const MinCostArbType::ArborescenceMap &am = |
|
| 118 |
const_mcarb_test.arborescenceMap(); |
|
| 119 |
const MinCostArbType::PredMap &pm = |
|
| 120 |
const_mcarb_test.predMap(); |
|
| 121 |
b = const_mcarb_test.reached(n); |
|
| 122 |
b = const_mcarb_test.processed(n); |
|
| 123 |
|
|
| 124 |
i = const_mcarb_test.dualNum(); |
|
| 125 |
c = const_mcarb_test.dualValue(); |
|
| 126 |
i = const_mcarb_test.dualSize(i); |
|
| 127 |
c = const_mcarb_test.dualValue(i); |
|
| 128 |
|
|
| 129 |
ignore_unused_variable_warning(am); |
|
| 130 |
ignore_unused_variable_warning(pm); |
|
| 131 |
} |
|
| 132 |
|
|
| 133 |
int main() {
|
|
| 134 |
typedef SmartDigraph Digraph; |
|
| 135 |
DIGRAPH_TYPEDEFS(Digraph); |
|
| 136 |
|
|
| 137 |
typedef Digraph::ArcMap<double> CostMap; |
|
| 138 |
|
|
| 139 |
Digraph digraph; |
|
| 140 |
CostMap cost(digraph); |
|
| 141 |
Node source; |
|
| 142 |
|
|
| 143 |
std::istringstream is(test_lgf); |
|
| 144 |
digraphReader(digraph, is). |
|
| 145 |
arcMap("cost", cost).
|
|
| 146 |
node("source", source).run();
|
|
| 147 |
|
|
| 148 |
MinCostArborescence<Digraph, CostMap> mca(digraph, cost); |
|
| 149 |
mca.run(source); |
|
| 150 |
|
|
| 151 |
vector<pair<double, set<Node> > > dualSolution(mca.dualNum()); |
|
| 152 |
|
|
| 153 |
for (int i = 0; i < mca.dualNum(); ++i) {
|
|
| 154 |
dualSolution[i].first = mca.dualValue(i); |
|
| 155 |
for (MinCostArborescence<Digraph, CostMap>::DualIt it(mca, i); |
|
| 156 |
it != INVALID; ++it) {
|
|
| 157 |
dualSolution[i].second.insert(it); |
|
| 158 |
} |
|
| 159 |
} |
|
| 160 |
|
|
| 161 |
for (ArcIt it(digraph); it != INVALID; ++it) {
|
|
| 162 |
if (mca.reached(digraph.source(it))) {
|
|
| 163 |
double sum = 0.0; |
|
| 164 |
for (int i = 0; i < int(dualSolution.size()); ++i) {
|
|
| 165 |
if (dualSolution[i].second.find(digraph.target(it)) |
|
| 166 |
!= dualSolution[i].second.end() && |
|
| 167 |
dualSolution[i].second.find(digraph.source(it)) |
|
| 168 |
== dualSolution[i].second.end()) {
|
|
| 169 |
sum += dualSolution[i].first; |
|
| 170 |
} |
|
| 171 |
} |
|
| 172 |
if (mca.arborescence(it)) {
|
|
| 173 |
check(sum == cost[it], "Invalid dual solution"); |
|
| 174 |
} |
|
| 175 |
check(sum <= cost[it], "Invalid dual solution"); |
|
| 176 |
} |
|
| 177 |
} |
|
| 178 |
|
|
| 179 |
|
|
| 180 |
check(mca.dualValue() == mca.arborescenceCost(), "Invalid dual solution"); |
|
| 181 |
|
|
| 182 |
check(mca.reached(source), "Invalid arborescence"); |
|
| 183 |
for (ArcIt a(digraph); a != INVALID; ++a) {
|
|
| 184 |
check(!mca.reached(digraph.source(a)) || |
|
| 185 |
mca.reached(digraph.target(a)), "Invalid arborescence"); |
|
| 186 |
} |
|
| 187 |
|
|
| 188 |
for (NodeIt n(digraph); n != INVALID; ++n) {
|
|
| 189 |
if (!mca.reached(n)) continue; |
|
| 190 |
int cnt = 0; |
|
| 191 |
for (InArcIt a(digraph, n); a != INVALID; ++a) {
|
|
| 192 |
if (mca.arborescence(a)) {
|
|
| 193 |
check(mca.pred(n) == a, "Invalid arborescence"); |
|
| 194 |
++cnt; |
|
| 195 |
} |
|
| 196 |
} |
|
| 197 |
check((n == source ? cnt == 0 : cnt == 1), "Invalid arborescence"); |
|
| 198 |
} |
|
| 199 |
|
|
| 200 |
Digraph::ArcMap<bool> arborescence(digraph); |
|
| 201 |
check(mca.arborescenceCost() == |
|
| 202 |
minCostArborescence(digraph, cost, source, arborescence), |
|
| 203 |
"Wrong result of the function interface"); |
|
| 204 |
|
|
| 205 |
return 0; |
|
| 206 |
} |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#include <iostream> |
|
| 20 |
#include <fstream> |
|
| 21 |
#include <limits> |
|
| 22 |
|
|
| 23 |
#include <lemon/list_graph.h> |
|
| 24 |
#include <lemon/lgf_reader.h> |
|
| 25 |
|
|
| 26 |
#include <lemon/network_simplex.h> |
|
| 27 |
|
|
| 28 |
#include <lemon/concepts/digraph.h> |
|
| 29 |
#include <lemon/concept_check.h> |
|
| 30 |
|
|
| 31 |
#include "test_tools.h" |
|
| 32 |
|
|
| 33 |
using namespace lemon; |
|
| 34 |
|
|
| 35 |
char test_lgf[] = |
|
| 36 |
"@nodes\n" |
|
| 37 |
"label sup1 sup2 sup3 sup4 sup5 sup6\n" |
|
| 38 |
" 1 20 27 0 30 20 30\n" |
|
| 39 |
" 2 -4 0 0 0 -8 -3\n" |
|
| 40 |
" 3 0 0 0 0 0 0\n" |
|
| 41 |
" 4 0 0 0 0 0 0\n" |
|
| 42 |
" 5 9 0 0 0 6 11\n" |
|
| 43 |
" 6 -6 0 0 0 -5 -6\n" |
|
| 44 |
" 7 0 0 0 0 0 0\n" |
|
| 45 |
" 8 0 0 0 0 0 3\n" |
|
| 46 |
" 9 3 0 0 0 0 0\n" |
|
| 47 |
" 10 -2 0 0 0 -7 -2\n" |
|
| 48 |
" 11 0 0 0 0 -10 0\n" |
|
| 49 |
" 12 -20 -27 0 -30 -30 -20\n" |
|
| 50 |
"\n" |
|
| 51 |
"@arcs\n" |
|
| 52 |
" cost cap low1 low2 low3\n" |
|
| 53 |
" 1 2 70 11 0 8 8\n" |
|
| 54 |
" 1 3 150 3 0 1 0\n" |
|
| 55 |
" 1 4 80 15 0 2 2\n" |
|
| 56 |
" 2 8 80 12 0 0 0\n" |
|
| 57 |
" 3 5 140 5 0 3 1\n" |
|
| 58 |
" 4 6 60 10 0 1 0\n" |
|
| 59 |
" 4 7 80 2 0 0 0\n" |
|
| 60 |
" 4 8 110 3 0 0 0\n" |
|
| 61 |
" 5 7 60 14 0 0 0\n" |
|
| 62 |
" 5 11 120 12 0 0 0\n" |
|
| 63 |
" 6 3 0 3 0 0 0\n" |
|
| 64 |
" 6 9 140 4 0 0 0\n" |
|
| 65 |
" 6 10 90 8 0 0 0\n" |
|
| 66 |
" 7 1 30 5 0 0 -5\n" |
|
| 67 |
" 8 12 60 16 0 4 3\n" |
|
| 68 |
" 9 12 50 6 0 0 0\n" |
|
| 69 |
"10 12 70 13 0 5 2\n" |
|
| 70 |
"10 2 100 7 0 0 0\n" |
|
| 71 |
"10 7 60 10 0 0 -3\n" |
|
| 72 |
"11 10 20 14 0 6 -20\n" |
|
| 73 |
"12 11 30 10 0 0 -10\n" |
|
| 74 |
"\n" |
|
| 75 |
"@attributes\n" |
|
| 76 |
"source 1\n" |
|
| 77 |
"target 12\n"; |
|
| 78 |
|
|
| 79 |
|
|
| 80 |
enum SupplyType {
|
|
| 81 |
EQ, |
|
| 82 |
GEQ, |
|
| 83 |
LEQ |
|
| 84 |
}; |
|
| 85 |
|
|
| 86 |
// Check the interface of an MCF algorithm |
|
| 87 |
template <typename GR, typename Value, typename Cost> |
|
| 88 |
class McfClassConcept |
|
| 89 |
{
|
|
| 90 |
public: |
|
| 91 |
|
|
| 92 |
template <typename MCF> |
|
| 93 |
struct Constraints {
|
|
| 94 |
void constraints() {
|
|
| 95 |
checkConcept<concepts::Digraph, GR>(); |
|
| 96 |
|
|
| 97 |
const Constraints& me = *this; |
|
| 98 |
|
|
| 99 |
MCF mcf(me.g); |
|
| 100 |
const MCF& const_mcf = mcf; |
|
| 101 |
|
|
| 102 |
b = mcf.reset() |
|
| 103 |
.lowerMap(me.lower) |
|
| 104 |
.upperMap(me.upper) |
|
| 105 |
.costMap(me.cost) |
|
| 106 |
.supplyMap(me.sup) |
|
| 107 |
.stSupply(me.n, me.n, me.k) |
|
| 108 |
.run(); |
|
| 109 |
|
|
| 110 |
c = const_mcf.totalCost(); |
|
| 111 |
x = const_mcf.template totalCost<double>(); |
|
| 112 |
v = const_mcf.flow(me.a); |
|
| 113 |
c = const_mcf.potential(me.n); |
|
| 114 |
const_mcf.flowMap(fm); |
|
| 115 |
const_mcf.potentialMap(pm); |
|
| 116 |
} |
|
| 117 |
|
|
| 118 |
typedef typename GR::Node Node; |
|
| 119 |
typedef typename GR::Arc Arc; |
|
| 120 |
typedef concepts::ReadMap<Node, Value> NM; |
|
| 121 |
typedef concepts::ReadMap<Arc, Value> VAM; |
|
| 122 |
typedef concepts::ReadMap<Arc, Cost> CAM; |
|
| 123 |
typedef concepts::WriteMap<Arc, Value> FlowMap; |
|
| 124 |
typedef concepts::WriteMap<Node, Cost> PotMap; |
|
| 125 |
|
|
| 126 |
GR g; |
|
| 127 |
VAM lower; |
|
| 128 |
VAM upper; |
|
| 129 |
CAM cost; |
|
| 130 |
NM sup; |
|
| 131 |
Node n; |
|
| 132 |
Arc a; |
|
| 133 |
Value k; |
|
| 134 |
|
|
| 135 |
FlowMap fm; |
|
| 136 |
PotMap pm; |
|
| 137 |
bool b; |
|
| 138 |
double x; |
|
| 139 |
typename MCF::Value v; |
|
| 140 |
typename MCF::Cost c; |
|
| 141 |
}; |
|
| 142 |
|
|
| 143 |
}; |
|
| 144 |
|
|
| 145 |
|
|
| 146 |
// Check the feasibility of the given flow (primal soluiton) |
|
| 147 |
template < typename GR, typename LM, typename UM, |
|
| 148 |
typename SM, typename FM > |
|
| 149 |
bool checkFlow( const GR& gr, const LM& lower, const UM& upper, |
|
| 150 |
const SM& supply, const FM& flow, |
|
| 151 |
SupplyType type = EQ ) |
|
| 152 |
{
|
|
| 153 |
TEMPLATE_DIGRAPH_TYPEDEFS(GR); |
|
| 154 |
|
|
| 155 |
for (ArcIt e(gr); e != INVALID; ++e) {
|
|
| 156 |
if (flow[e] < lower[e] || flow[e] > upper[e]) return false; |
|
| 157 |
} |
|
| 158 |
|
|
| 159 |
for (NodeIt n(gr); n != INVALID; ++n) {
|
|
| 160 |
typename SM::Value sum = 0; |
|
| 161 |
for (OutArcIt e(gr, n); e != INVALID; ++e) |
|
| 162 |
sum += flow[e]; |
|
| 163 |
for (InArcIt e(gr, n); e != INVALID; ++e) |
|
| 164 |
sum -= flow[e]; |
|
| 165 |
bool b = (type == EQ && sum == supply[n]) || |
|
| 166 |
(type == GEQ && sum >= supply[n]) || |
|
| 167 |
(type == LEQ && sum <= supply[n]); |
|
| 168 |
if (!b) return false; |
|
| 169 |
} |
|
| 170 |
|
|
| 171 |
return true; |
|
| 172 |
} |
|
| 173 |
|
|
| 174 |
// Check the feasibility of the given potentials (dual soluiton) |
|
| 175 |
// using the "Complementary Slackness" optimality condition |
|
| 176 |
template < typename GR, typename LM, typename UM, |
|
| 177 |
typename CM, typename SM, typename FM, typename PM > |
|
| 178 |
bool checkPotential( const GR& gr, const LM& lower, const UM& upper, |
|
| 179 |
const CM& cost, const SM& supply, const FM& flow, |
|
| 180 |
const PM& pi, SupplyType type ) |
|
| 181 |
{
|
|
| 182 |
TEMPLATE_DIGRAPH_TYPEDEFS(GR); |
|
| 183 |
|
|
| 184 |
bool opt = true; |
|
| 185 |
for (ArcIt e(gr); opt && e != INVALID; ++e) {
|
|
| 186 |
typename CM::Value red_cost = |
|
| 187 |
cost[e] + pi[gr.source(e)] - pi[gr.target(e)]; |
|
| 188 |
opt = red_cost == 0 || |
|
| 189 |
(red_cost > 0 && flow[e] == lower[e]) || |
|
| 190 |
(red_cost < 0 && flow[e] == upper[e]); |
|
| 191 |
} |
|
| 192 |
|
|
| 193 |
for (NodeIt n(gr); opt && n != INVALID; ++n) {
|
|
| 194 |
typename SM::Value sum = 0; |
|
| 195 |
for (OutArcIt e(gr, n); e != INVALID; ++e) |
|
| 196 |
sum += flow[e]; |
|
| 197 |
for (InArcIt e(gr, n); e != INVALID; ++e) |
|
| 198 |
sum -= flow[e]; |
|
| 199 |
if (type != LEQ) {
|
|
| 200 |
opt = (pi[n] <= 0) && (sum == supply[n] || pi[n] == 0); |
|
| 201 |
} else {
|
|
| 202 |
opt = (pi[n] >= 0) && (sum == supply[n] || pi[n] == 0); |
|
| 203 |
} |
|
| 204 |
} |
|
| 205 |
|
|
| 206 |
return opt; |
|
| 207 |
} |
|
| 208 |
|
|
| 209 |
// Check whether the dual cost is equal to the primal cost |
|
| 210 |
template < typename GR, typename LM, typename UM, |
|
| 211 |
typename CM, typename SM, typename PM > |
|
| 212 |
bool checkDualCost( const GR& gr, const LM& lower, const UM& upper, |
|
| 213 |
const CM& cost, const SM& supply, const PM& pi, |
|
| 214 |
typename CM::Value total ) |
|
| 215 |
{
|
|
| 216 |
TEMPLATE_DIGRAPH_TYPEDEFS(GR); |
|
| 217 |
|
|
| 218 |
typename CM::Value dual_cost = 0; |
|
| 219 |
SM red_supply(gr); |
|
| 220 |
for (NodeIt n(gr); n != INVALID; ++n) {
|
|
| 221 |
red_supply[n] = supply[n]; |
|
| 222 |
} |
|
| 223 |
for (ArcIt a(gr); a != INVALID; ++a) {
|
|
| 224 |
if (lower[a] != 0) {
|
|
| 225 |
dual_cost += lower[a] * cost[a]; |
|
| 226 |
red_supply[gr.source(a)] -= lower[a]; |
|
| 227 |
red_supply[gr.target(a)] += lower[a]; |
|
| 228 |
} |
|
| 229 |
} |
|
| 230 |
|
|
| 231 |
for (NodeIt n(gr); n != INVALID; ++n) {
|
|
| 232 |
dual_cost -= red_supply[n] * pi[n]; |
|
| 233 |
} |
|
| 234 |
for (ArcIt a(gr); a != INVALID; ++a) {
|
|
| 235 |
typename CM::Value red_cost = |
|
| 236 |
cost[a] + pi[gr.source(a)] - pi[gr.target(a)]; |
|
| 237 |
dual_cost -= (upper[a] - lower[a]) * std::max(-red_cost, 0); |
|
| 238 |
} |
|
| 239 |
|
|
| 240 |
return dual_cost == total; |
|
| 241 |
} |
|
| 242 |
|
|
| 243 |
// Run a minimum cost flow algorithm and check the results |
|
| 244 |
template < typename MCF, typename GR, |
|
| 245 |
typename LM, typename UM, |
|
| 246 |
typename CM, typename SM, |
|
| 247 |
typename PT > |
|
| 248 |
void checkMcf( const MCF& mcf, PT mcf_result, |
|
| 249 |
const GR& gr, const LM& lower, const UM& upper, |
|
| 250 |
const CM& cost, const SM& supply, |
|
| 251 |
PT result, bool optimal, typename CM::Value total, |
|
| 252 |
const std::string &test_id = "", |
|
| 253 |
SupplyType type = EQ ) |
|
| 254 |
{
|
|
| 255 |
check(mcf_result == result, "Wrong result " + test_id); |
|
| 256 |
if (optimal) {
|
|
| 257 |
typename GR::template ArcMap<typename SM::Value> flow(gr); |
|
| 258 |
typename GR::template NodeMap<typename CM::Value> pi(gr); |
|
| 259 |
mcf.flowMap(flow); |
|
| 260 |
mcf.potentialMap(pi); |
|
| 261 |
check(checkFlow(gr, lower, upper, supply, flow, type), |
|
| 262 |
"The flow is not feasible " + test_id); |
|
| 263 |
check(mcf.totalCost() == total, "The flow is not optimal " + test_id); |
|
| 264 |
check(checkPotential(gr, lower, upper, cost, supply, flow, pi, type), |
|
| 265 |
"Wrong potentials " + test_id); |
|
| 266 |
check(checkDualCost(gr, lower, upper, cost, supply, pi, total), |
|
| 267 |
"Wrong dual cost " + test_id); |
|
| 268 |
} |
|
| 269 |
} |
|
| 270 |
|
|
| 271 |
int main() |
|
| 272 |
{
|
|
| 273 |
// Check the interfaces |
|
| 274 |
{
|
|
| 275 |
typedef concepts::Digraph GR; |
|
| 276 |
checkConcept< McfClassConcept<GR, int, int>, |
|
| 277 |
NetworkSimplex<GR> >(); |
|
| 278 |
checkConcept< McfClassConcept<GR, double, double>, |
|
| 279 |
NetworkSimplex<GR, double> >(); |
|
| 280 |
checkConcept< McfClassConcept<GR, int, double>, |
|
| 281 |
NetworkSimplex<GR, int, double> >(); |
|
| 282 |
} |
|
| 283 |
|
|
| 284 |
// Run various MCF tests |
|
| 285 |
typedef ListDigraph Digraph; |
|
| 286 |
DIGRAPH_TYPEDEFS(ListDigraph); |
|
| 287 |
|
|
| 288 |
// Read the test digraph |
|
| 289 |
Digraph gr; |
|
| 290 |
Digraph::ArcMap<int> c(gr), l1(gr), l2(gr), l3(gr), u(gr); |
|
| 291 |
Digraph::NodeMap<int> s1(gr), s2(gr), s3(gr), s4(gr), s5(gr), s6(gr); |
|
| 292 |
ConstMap<Arc, int> cc(1), cu(std::numeric_limits<int>::max()); |
|
| 293 |
Node v, w; |
|
| 294 |
|
|
| 295 |
std::istringstream input(test_lgf); |
|
| 296 |
DigraphReader<Digraph>(gr, input) |
|
| 297 |
.arcMap("cost", c)
|
|
| 298 |
.arcMap("cap", u)
|
|
| 299 |
.arcMap("low1", l1)
|
|
| 300 |
.arcMap("low2", l2)
|
|
| 301 |
.arcMap("low3", l3)
|
|
| 302 |
.nodeMap("sup1", s1)
|
|
| 303 |
.nodeMap("sup2", s2)
|
|
| 304 |
.nodeMap("sup3", s3)
|
|
| 305 |
.nodeMap("sup4", s4)
|
|
| 306 |
.nodeMap("sup5", s5)
|
|
| 307 |
.nodeMap("sup6", s6)
|
|
| 308 |
.node("source", v)
|
|
| 309 |
.node("target", w)
|
|
| 310 |
.run(); |
|
| 311 |
|
|
| 312 |
// Build test digraphs with negative costs |
|
| 313 |
Digraph neg_gr; |
|
| 314 |
Node n1 = neg_gr.addNode(); |
|
| 315 |
Node n2 = neg_gr.addNode(); |
|
| 316 |
Node n3 = neg_gr.addNode(); |
|
| 317 |
Node n4 = neg_gr.addNode(); |
|
| 318 |
Node n5 = neg_gr.addNode(); |
|
| 319 |
Node n6 = neg_gr.addNode(); |
|
| 320 |
Node n7 = neg_gr.addNode(); |
|
| 321 |
|
|
| 322 |
Arc a1 = neg_gr.addArc(n1, n2); |
|
| 323 |
Arc a2 = neg_gr.addArc(n1, n3); |
|
| 324 |
Arc a3 = neg_gr.addArc(n2, n4); |
|
| 325 |
Arc a4 = neg_gr.addArc(n3, n4); |
|
| 326 |
Arc a5 = neg_gr.addArc(n3, n2); |
|
| 327 |
Arc a6 = neg_gr.addArc(n5, n3); |
|
| 328 |
Arc a7 = neg_gr.addArc(n5, n6); |
|
| 329 |
Arc a8 = neg_gr.addArc(n6, n7); |
|
| 330 |
Arc a9 = neg_gr.addArc(n7, n5); |
|
| 331 |
|
|
| 332 |
Digraph::ArcMap<int> neg_c(neg_gr), neg_l1(neg_gr, 0), neg_l2(neg_gr, 0); |
|
| 333 |
ConstMap<Arc, int> neg_u1(std::numeric_limits<int>::max()), neg_u2(5000); |
|
| 334 |
Digraph::NodeMap<int> neg_s(neg_gr, 0); |
|
| 335 |
|
|
| 336 |
neg_l2[a7] = 1000; |
|
| 337 |
neg_l2[a8] = -1000; |
|
| 338 |
|
|
| 339 |
neg_s[n1] = 100; |
|
| 340 |
neg_s[n4] = -100; |
|
| 341 |
|
|
| 342 |
neg_c[a1] = 100; |
|
| 343 |
neg_c[a2] = 30; |
|
| 344 |
neg_c[a3] = 20; |
|
| 345 |
neg_c[a4] = 80; |
|
| 346 |
neg_c[a5] = 50; |
|
| 347 |
neg_c[a6] = 10; |
|
| 348 |
neg_c[a7] = 80; |
|
| 349 |
neg_c[a8] = 30; |
|
| 350 |
neg_c[a9] = -120; |
|
| 351 |
|
|
| 352 |
Digraph negs_gr; |
|
| 353 |
Digraph::NodeMap<int> negs_s(negs_gr); |
|
| 354 |
Digraph::ArcMap<int> negs_c(negs_gr); |
|
| 355 |
ConstMap<Arc, int> negs_l(0), negs_u(1000); |
|
| 356 |
n1 = negs_gr.addNode(); |
|
| 357 |
n2 = negs_gr.addNode(); |
|
| 358 |
negs_s[n1] = 100; |
|
| 359 |
negs_s[n2] = -300; |
|
| 360 |
negs_c[negs_gr.addArc(n1, n2)] = -1; |
|
| 361 |
|
|
| 362 |
|
|
| 363 |
// A. Test NetworkSimplex with the default pivot rule |
|
| 364 |
{
|
|
| 365 |
NetworkSimplex<Digraph> mcf(gr); |
|
| 366 |
|
|
| 367 |
// Check the equality form |
|
| 368 |
mcf.upperMap(u).costMap(c); |
|
| 369 |
checkMcf(mcf, mcf.supplyMap(s1).run(), |
|
| 370 |
gr, l1, u, c, s1, mcf.OPTIMAL, true, 5240, "#A1"); |
|
| 371 |
checkMcf(mcf, mcf.stSupply(v, w, 27).run(), |
|
| 372 |
gr, l1, u, c, s2, mcf.OPTIMAL, true, 7620, "#A2"); |
|
| 373 |
mcf.lowerMap(l2); |
|
| 374 |
checkMcf(mcf, mcf.supplyMap(s1).run(), |
|
| 375 |
gr, l2, u, c, s1, mcf.OPTIMAL, true, 5970, "#A3"); |
|
| 376 |
checkMcf(mcf, mcf.stSupply(v, w, 27).run(), |
|
| 377 |
gr, l2, u, c, s2, mcf.OPTIMAL, true, 8010, "#A4"); |
|
| 378 |
mcf.reset(); |
|
| 379 |
checkMcf(mcf, mcf.supplyMap(s1).run(), |
|
| 380 |
gr, l1, cu, cc, s1, mcf.OPTIMAL, true, 74, "#A5"); |
|
| 381 |
checkMcf(mcf, mcf.lowerMap(l2).stSupply(v, w, 27).run(), |
|
| 382 |
gr, l2, cu, cc, s2, mcf.OPTIMAL, true, 94, "#A6"); |
|
| 383 |
mcf.reset(); |
|
| 384 |
checkMcf(mcf, mcf.run(), |
|
| 385 |
gr, l1, cu, cc, s3, mcf.OPTIMAL, true, 0, "#A7"); |
|
| 386 |
checkMcf(mcf, mcf.lowerMap(l2).upperMap(u).run(), |
|
| 387 |
gr, l2, u, cc, s3, mcf.INFEASIBLE, false, 0, "#A8"); |
|
| 388 |
mcf.reset().lowerMap(l3).upperMap(u).costMap(c).supplyMap(s4); |
|
| 389 |
checkMcf(mcf, mcf.run(), |
|
| 390 |
gr, l3, u, c, s4, mcf.OPTIMAL, true, 6360, "#A9"); |
|
| 391 |
|
|
| 392 |
// Check the GEQ form |
|
| 393 |
mcf.reset().upperMap(u).costMap(c).supplyMap(s5); |
|
| 394 |
checkMcf(mcf, mcf.run(), |
|
| 395 |
gr, l1, u, c, s5, mcf.OPTIMAL, true, 3530, "#A10", GEQ); |
|
| 396 |
mcf.supplyType(mcf.GEQ); |
|
| 397 |
checkMcf(mcf, mcf.lowerMap(l2).run(), |
|
| 398 |
gr, l2, u, c, s5, mcf.OPTIMAL, true, 4540, "#A11", GEQ); |
|
| 399 |
mcf.supplyMap(s6); |
|
| 400 |
checkMcf(mcf, mcf.run(), |
|
| 401 |
gr, l2, u, c, s6, mcf.INFEASIBLE, false, 0, "#A12", GEQ); |
|
| 402 |
|
|
| 403 |
// Check the LEQ form |
|
| 404 |
mcf.reset().supplyType(mcf.LEQ); |
|
| 405 |
mcf.upperMap(u).costMap(c).supplyMap(s6); |
|
| 406 |
checkMcf(mcf, mcf.run(), |
|
| 407 |
gr, l1, u, c, s6, mcf.OPTIMAL, true, 5080, "#A13", LEQ); |
|
| 408 |
checkMcf(mcf, mcf.lowerMap(l2).run(), |
|
| 409 |
gr, l2, u, c, s6, mcf.OPTIMAL, true, 5930, "#A14", LEQ); |
|
| 410 |
mcf.supplyMap(s5); |
|
| 411 |
checkMcf(mcf, mcf.run(), |
|
| 412 |
gr, l2, u, c, s5, mcf.INFEASIBLE, false, 0, "#A15", LEQ); |
|
| 413 |
|
|
| 414 |
// Check negative costs |
|
| 415 |
NetworkSimplex<Digraph> neg_mcf(neg_gr); |
|
| 416 |
neg_mcf.lowerMap(neg_l1).costMap(neg_c).supplyMap(neg_s); |
|
| 417 |
checkMcf(neg_mcf, neg_mcf.run(), neg_gr, neg_l1, neg_u1, |
|
| 418 |
neg_c, neg_s, neg_mcf.UNBOUNDED, false, 0, "#A16"); |
|
| 419 |
neg_mcf.upperMap(neg_u2); |
|
| 420 |
checkMcf(neg_mcf, neg_mcf.run(), neg_gr, neg_l1, neg_u2, |
|
| 421 |
neg_c, neg_s, neg_mcf.OPTIMAL, true, -40000, "#A17"); |
|
| 422 |
neg_mcf.reset().lowerMap(neg_l2).costMap(neg_c).supplyMap(neg_s); |
|
| 423 |
checkMcf(neg_mcf, neg_mcf.run(), neg_gr, neg_l2, neg_u1, |
|
| 424 |
neg_c, neg_s, neg_mcf.UNBOUNDED, false, 0, "#A18"); |
|
| 425 |
|
|
| 426 |
NetworkSimplex<Digraph> negs_mcf(negs_gr); |
|
| 427 |
negs_mcf.costMap(negs_c).supplyMap(negs_s); |
|
| 428 |
checkMcf(negs_mcf, negs_mcf.run(), negs_gr, negs_l, negs_u, |
|
| 429 |
negs_c, negs_s, negs_mcf.OPTIMAL, true, -300, "#A19", GEQ); |
|
| 430 |
} |
|
| 431 |
|
|
| 432 |
// B. Test NetworkSimplex with each pivot rule |
|
| 433 |
{
|
|
| 434 |
NetworkSimplex<Digraph> mcf(gr); |
|
| 435 |
mcf.supplyMap(s1).costMap(c).upperMap(u).lowerMap(l2); |
|
| 436 |
|
|
| 437 |
checkMcf(mcf, mcf.run(NetworkSimplex<Digraph>::FIRST_ELIGIBLE), |
|
| 438 |
gr, l2, u, c, s1, mcf.OPTIMAL, true, 5970, "#B1"); |
|
| 439 |
checkMcf(mcf, mcf.run(NetworkSimplex<Digraph>::BEST_ELIGIBLE), |
|
| 440 |
gr, l2, u, c, s1, mcf.OPTIMAL, true, 5970, "#B2"); |
|
| 441 |
checkMcf(mcf, mcf.run(NetworkSimplex<Digraph>::BLOCK_SEARCH), |
|
| 442 |
gr, l2, u, c, s1, mcf.OPTIMAL, true, 5970, "#B3"); |
|
| 443 |
checkMcf(mcf, mcf.run(NetworkSimplex<Digraph>::CANDIDATE_LIST), |
|
| 444 |
gr, l2, u, c, s1, mcf.OPTIMAL, true, 5970, "#B4"); |
|
| 445 |
checkMcf(mcf, mcf.run(NetworkSimplex<Digraph>::ALTERING_LIST), |
|
| 446 |
gr, l2, u, c, s1, mcf.OPTIMAL, true, 5970, "#B5"); |
|
| 447 |
} |
|
| 448 |
|
|
| 449 |
return 0; |
|
| 450 |
} |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#include <iostream> |
|
| 20 |
#include <sstream> |
|
| 21 |
|
|
| 22 |
#include <lemon/smart_graph.h> |
|
| 23 |
#include <lemon/lgf_reader.h> |
|
| 24 |
#include <lemon/path.h> |
|
| 25 |
#include <lemon/concepts/digraph.h> |
|
| 26 |
#include <lemon/concept_check.h> |
|
| 27 |
|
|
| 28 |
#include <lemon/karp.h> |
|
| 29 |
#include <lemon/hartmann_orlin.h> |
|
| 30 |
#include <lemon/howard.h> |
|
| 31 |
|
|
| 32 |
#include "test_tools.h" |
|
| 33 |
|
|
| 34 |
using namespace lemon; |
|
| 35 |
|
|
| 36 |
char test_lgf[] = |
|
| 37 |
"@nodes\n" |
|
| 38 |
"label\n" |
|
| 39 |
"1\n" |
|
| 40 |
"2\n" |
|
| 41 |
"3\n" |
|
| 42 |
"4\n" |
|
| 43 |
"5\n" |
|
| 44 |
"6\n" |
|
| 45 |
"7\n" |
|
| 46 |
"@arcs\n" |
|
| 47 |
" len1 len2 len3 len4 c1 c2 c3 c4\n" |
|
| 48 |
"1 2 1 1 1 1 0 0 0 0\n" |
|
| 49 |
"2 4 5 5 5 5 1 0 0 0\n" |
|
| 50 |
"2 3 8 8 8 8 0 0 0 0\n" |
|
| 51 |
"3 2 -2 0 0 0 1 0 0 0\n" |
|
| 52 |
"3 4 4 4 4 4 0 0 0 0\n" |
|
| 53 |
"3 7 -4 -4 -4 -4 0 0 0 0\n" |
|
| 54 |
"4 1 2 2 2 2 0 0 0 0\n" |
|
| 55 |
"4 3 3 3 3 3 1 0 0 0\n" |
|
| 56 |
"4 4 3 3 0 0 0 0 1 0\n" |
|
| 57 |
"5 2 4 4 4 4 0 0 0 0\n" |
|
| 58 |
"5 6 3 3 3 3 0 1 0 0\n" |
|
| 59 |
"6 5 2 2 2 2 0 1 0 0\n" |
|
| 60 |
"6 4 -1 -1 -1 -1 0 0 0 0\n" |
|
| 61 |
"6 7 1 1 1 1 0 0 0 0\n" |
|
| 62 |
"7 7 4 4 4 -1 0 0 0 1\n"; |
|
| 63 |
|
|
| 64 |
|
|
| 65 |
// Check the interface of an MMC algorithm |
|
| 66 |
template <typename GR, typename Value> |
|
| 67 |
struct MmcClassConcept |
|
| 68 |
{
|
|
| 69 |
template <typename MMC> |
|
| 70 |
struct Constraints {
|
|
| 71 |
void constraints() {
|
|
| 72 |
const Constraints& me = *this; |
|
| 73 |
|
|
| 74 |
typedef typename MMC |
|
| 75 |
::template SetPath<ListPath<GR> > |
|
| 76 |
::template SetLargeValue<Value> |
|
| 77 |
::Create MmcAlg; |
|
| 78 |
MmcAlg mmc(me.g, me.length); |
|
| 79 |
const MmcAlg& const_mmc = mmc; |
|
| 80 |
|
|
| 81 |
typename MmcAlg::Tolerance tol = const_mmc.tolerance(); |
|
| 82 |
mmc.tolerance(tol); |
|
| 83 |
|
|
| 84 |
b = mmc.cycle(p).run(); |
|
| 85 |
b = mmc.findMinMean(); |
|
| 86 |
b = mmc.findCycle(); |
|
| 87 |
|
|
| 88 |
v = const_mmc.cycleLength(); |
|
| 89 |
i = const_mmc.cycleArcNum(); |
|
| 90 |
d = const_mmc.cycleMean(); |
|
| 91 |
p = const_mmc.cycle(); |
|
| 92 |
} |
|
| 93 |
|
|
| 94 |
typedef concepts::ReadMap<typename GR::Arc, Value> LM; |
|
| 95 |
|
|
| 96 |
GR g; |
|
| 97 |
LM length; |
|
| 98 |
ListPath<GR> p; |
|
| 99 |
Value v; |
|
| 100 |
int i; |
|
| 101 |
double d; |
|
| 102 |
bool b; |
|
| 103 |
}; |
|
| 104 |
}; |
|
| 105 |
|
|
| 106 |
// Perform a test with the given parameters |
|
| 107 |
template <typename MMC> |
|
| 108 |
void checkMmcAlg(const SmartDigraph& gr, |
|
| 109 |
const SmartDigraph::ArcMap<int>& lm, |
|
| 110 |
const SmartDigraph::ArcMap<int>& cm, |
|
| 111 |
int length, int size) {
|
|
| 112 |
MMC alg(gr, lm); |
|
| 113 |
alg.findMinMean(); |
|
| 114 |
check(alg.cycleMean() == static_cast<double>(length) / size, |
|
| 115 |
"Wrong cycle mean"); |
|
| 116 |
alg.findCycle(); |
|
| 117 |
check(alg.cycleLength() == length && alg.cycleArcNum() == size, |
|
| 118 |
"Wrong path"); |
|
| 119 |
SmartDigraph::ArcMap<int> cycle(gr, 0); |
|
| 120 |
for (typename MMC::Path::ArcIt a(alg.cycle()); a != INVALID; ++a) {
|
|
| 121 |
++cycle[a]; |
|
| 122 |
} |
|
| 123 |
for (SmartDigraph::ArcIt a(gr); a != INVALID; ++a) {
|
|
| 124 |
check(cm[a] == cycle[a], "Wrong path"); |
|
| 125 |
} |
|
| 126 |
} |
|
| 127 |
|
|
| 128 |
// Class for comparing types |
|
| 129 |
template <typename T1, typename T2> |
|
| 130 |
struct IsSameType {
|
|
| 131 |
static const int result = 0; |
|
| 132 |
}; |
|
| 133 |
|
|
| 134 |
template <typename T> |
|
| 135 |
struct IsSameType<T,T> {
|
|
| 136 |
static const int result = 1; |
|
| 137 |
}; |
|
| 138 |
|
|
| 139 |
|
|
| 140 |
int main() {
|
|
| 141 |
#ifdef LEMON_HAVE_LONG_LONG |
|
| 142 |
typedef long long long_int; |
|
| 143 |
#else |
|
| 144 |
typedef long long_int; |
|
| 145 |
#endif |
|
| 146 |
|
|
| 147 |
// Check the interface |
|
| 148 |
{
|
|
| 149 |
typedef concepts::Digraph GR; |
|
| 150 |
|
|
| 151 |
// Karp |
|
| 152 |
checkConcept< MmcClassConcept<GR, int>, |
|
| 153 |
Karp<GR, concepts::ReadMap<GR::Arc, int> > >(); |
|
| 154 |
checkConcept< MmcClassConcept<GR, float>, |
|
| 155 |
Karp<GR, concepts::ReadMap<GR::Arc, float> > >(); |
|
| 156 |
|
|
| 157 |
// HartmannOrlin |
|
| 158 |
checkConcept< MmcClassConcept<GR, int>, |
|
| 159 |
HartmannOrlin<GR, concepts::ReadMap<GR::Arc, int> > >(); |
|
| 160 |
checkConcept< MmcClassConcept<GR, float>, |
|
| 161 |
HartmannOrlin<GR, concepts::ReadMap<GR::Arc, float> > >(); |
|
| 162 |
|
|
| 163 |
// Howard |
|
| 164 |
checkConcept< MmcClassConcept<GR, int>, |
|
| 165 |
Howard<GR, concepts::ReadMap<GR::Arc, int> > >(); |
|
| 166 |
checkConcept< MmcClassConcept<GR, float>, |
|
| 167 |
Howard<GR, concepts::ReadMap<GR::Arc, float> > >(); |
|
| 168 |
|
|
| 169 |
if (IsSameType<Howard<GR, concepts::ReadMap<GR::Arc, int> >::LargeValue, |
|
| 170 |
long_int>::result == 0) check(false, "Wrong LargeValue type"); |
|
| 171 |
if (IsSameType<Howard<GR, concepts::ReadMap<GR::Arc, float> >::LargeValue, |
|
| 172 |
double>::result == 0) check(false, "Wrong LargeValue type"); |
|
| 173 |
} |
|
| 174 |
|
|
| 175 |
// Run various tests |
|
| 176 |
{
|
|
| 177 |
typedef SmartDigraph GR; |
|
| 178 |
DIGRAPH_TYPEDEFS(GR); |
|
| 179 |
|
|
| 180 |
GR gr; |
|
| 181 |
IntArcMap l1(gr), l2(gr), l3(gr), l4(gr); |
|
| 182 |
IntArcMap c1(gr), c2(gr), c3(gr), c4(gr); |
|
| 183 |
|
|
| 184 |
std::istringstream input(test_lgf); |
|
| 185 |
digraphReader(gr, input). |
|
| 186 |
arcMap("len1", l1).
|
|
| 187 |
arcMap("len2", l2).
|
|
| 188 |
arcMap("len3", l3).
|
|
| 189 |
arcMap("len4", l4).
|
|
| 190 |
arcMap("c1", c1).
|
|
| 191 |
arcMap("c2", c2).
|
|
| 192 |
arcMap("c3", c3).
|
|
| 193 |
arcMap("c4", c4).
|
|
| 194 |
run(); |
|
| 195 |
|
|
| 196 |
// Karp |
|
| 197 |
checkMmcAlg<Karp<GR, IntArcMap> >(gr, l1, c1, 6, 3); |
|
| 198 |
checkMmcAlg<Karp<GR, IntArcMap> >(gr, l2, c2, 5, 2); |
|
| 199 |
checkMmcAlg<Karp<GR, IntArcMap> >(gr, l3, c3, 0, 1); |
|
| 200 |
checkMmcAlg<Karp<GR, IntArcMap> >(gr, l4, c4, -1, 1); |
|
| 201 |
|
|
| 202 |
// HartmannOrlin |
|
| 203 |
checkMmcAlg<HartmannOrlin<GR, IntArcMap> >(gr, l1, c1, 6, 3); |
|
| 204 |
checkMmcAlg<HartmannOrlin<GR, IntArcMap> >(gr, l2, c2, 5, 2); |
|
| 205 |
checkMmcAlg<HartmannOrlin<GR, IntArcMap> >(gr, l3, c3, 0, 1); |
|
| 206 |
checkMmcAlg<HartmannOrlin<GR, IntArcMap> >(gr, l4, c4, -1, 1); |
|
| 207 |
|
|
| 208 |
// Howard |
|
| 209 |
checkMmcAlg<Howard<GR, IntArcMap> >(gr, l1, c1, 6, 3); |
|
| 210 |
checkMmcAlg<Howard<GR, IntArcMap> >(gr, l2, c2, 5, 2); |
|
| 211 |
checkMmcAlg<Howard<GR, IntArcMap> >(gr, l3, c3, 0, 1); |
|
| 212 |
checkMmcAlg<Howard<GR, IntArcMap> >(gr, l4, c4, -1, 1); |
|
| 213 |
} |
|
| 214 |
|
|
| 215 |
return 0; |
|
| 216 |
} |
| 1 |
INCLUDE_DIRECTORIES( |
|
| 2 |
${PROJECT_SOURCE_DIR}
|
|
| 3 |
${PROJECT_BINARY_DIR}
|
|
| 4 |
) |
|
| 5 |
|
|
| 6 |
LINK_DIRECTORIES( |
|
| 7 |
${PROJECT_BINARY_DIR}/lemon
|
|
| 8 |
) |
|
| 9 |
|
|
| 10 |
ADD_EXECUTABLE(lgf-gen lgf-gen.cc) |
|
| 11 |
TARGET_LINK_LIBRARIES(lgf-gen lemon) |
|
| 12 |
|
|
| 13 |
ADD_EXECUTABLE(dimacs-to-lgf dimacs-to-lgf.cc) |
|
| 14 |
TARGET_LINK_LIBRARIES(dimacs-to-lgf lemon) |
|
| 15 |
|
|
| 16 |
ADD_EXECUTABLE(dimacs-solver dimacs-solver.cc) |
|
| 17 |
TARGET_LINK_LIBRARIES(dimacs-solver lemon) |
|
| 18 |
|
|
| 19 |
INSTALL( |
|
| 20 |
TARGETS lgf-gen dimacs-to-lgf dimacs-solver |
|
| 21 |
RUNTIME DESTINATION bin |
|
| 22 |
COMPONENT bin |
|
| 23 |
) |
|
| 24 |
|
|
| 25 |
IF(NOT WIN32) |
|
| 26 |
INSTALL( |
|
| 27 |
PROGRAMS ${CMAKE_CURRENT_SOURCE_DIR}/lemon-0.x-to-1.x.sh
|
|
| 28 |
DESTINATION bin |
|
| 29 |
COMPONENT bin |
|
| 30 |
) |
|
| 31 |
ENDIF() |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
/// \ingroup tools |
|
| 20 |
/// \file |
|
| 21 |
/// \brief Special plane graph generator. |
|
| 22 |
/// |
|
| 23 |
/// Graph generator application for various types of plane graphs. |
|
| 24 |
/// |
|
| 25 |
/// See |
|
| 26 |
/// \code |
|
| 27 |
/// lgf-gen --help |
|
| 28 |
/// \endcode |
|
| 29 |
/// for more information on the usage. |
|
| 30 |
|
|
| 31 |
#include <algorithm> |
|
| 32 |
#include <set> |
|
| 33 |
#include <ctime> |
|
| 34 |
#include <lemon/list_graph.h> |
|
| 35 |
#include <lemon/random.h> |
|
| 36 |
#include <lemon/dim2.h> |
|
| 37 |
#include <lemon/bfs.h> |
|
| 38 |
#include <lemon/counter.h> |
|
| 39 |
#include <lemon/suurballe.h> |
|
| 40 |
#include <lemon/graph_to_eps.h> |
|
| 41 |
#include <lemon/lgf_writer.h> |
|
| 42 |
#include <lemon/arg_parser.h> |
|
| 43 |
#include <lemon/euler.h> |
|
| 44 |
#include <lemon/math.h> |
|
| 45 |
#include <lemon/kruskal.h> |
|
| 46 |
#include <lemon/time_measure.h> |
|
| 47 |
|
|
| 48 |
using namespace lemon; |
|
| 49 |
|
|
| 50 |
typedef dim2::Point<double> Point; |
|
| 51 |
|
|
| 52 |
GRAPH_TYPEDEFS(ListGraph); |
|
| 53 |
|
|
| 54 |
bool progress=true; |
|
| 55 |
|
|
| 56 |
int N; |
|
| 57 |
// int girth; |
|
| 58 |
|
|
| 59 |
ListGraph g; |
|
| 60 |
|
|
| 61 |
std::vector<Node> nodes; |
|
| 62 |
ListGraph::NodeMap<Point> coords(g); |
|
| 63 |
|
|
| 64 |
|
|
| 65 |
double totalLen(){
|
|
| 66 |
double tlen=0; |
|
| 67 |
for(EdgeIt e(g);e!=INVALID;++e) |
|
| 68 |
tlen+=std::sqrt((coords[g.v(e)]-coords[g.u(e)]).normSquare()); |
|
| 69 |
return tlen; |
|
| 70 |
} |
|
| 71 |
|
|
| 72 |
int tsp_impr_num=0; |
|
| 73 |
|
|
| 74 |
const double EPSILON=1e-8; |
|
| 75 |
bool tsp_improve(Node u, Node v) |
|
| 76 |
{
|
|
| 77 |
double luv=std::sqrt((coords[v]-coords[u]).normSquare()); |
|
| 78 |
Node u2=u; |
|
| 79 |
Node v2=v; |
|
| 80 |
do {
|
|
| 81 |
Node n; |
|
| 82 |
for(IncEdgeIt e(g,v2);(n=g.runningNode(e))==u2;++e) { }
|
|
| 83 |
u2=v2; |
|
| 84 |
v2=n; |
|
| 85 |
if(luv+std::sqrt((coords[v2]-coords[u2]).normSquare())-EPSILON> |
|
| 86 |
std::sqrt((coords[u]-coords[u2]).normSquare())+ |
|
| 87 |
std::sqrt((coords[v]-coords[v2]).normSquare())) |
|
| 88 |
{
|
|
| 89 |
g.erase(findEdge(g,u,v)); |
|
| 90 |
g.erase(findEdge(g,u2,v2)); |
|
| 91 |
g.addEdge(u2,u); |
|
| 92 |
g.addEdge(v,v2); |
|
| 93 |
tsp_impr_num++; |
|
| 94 |
return true; |
|
| 95 |
} |
|
| 96 |
} while(v2!=u); |
|
| 97 |
return false; |
|
| 98 |
} |
|
| 99 |
|
|
| 100 |
bool tsp_improve(Node u) |
|
| 101 |
{
|
|
| 102 |
for(IncEdgeIt e(g,u);e!=INVALID;++e) |
|
| 103 |
if(tsp_improve(u,g.runningNode(e))) return true; |
|
| 104 |
return false; |
|
| 105 |
} |
|
| 106 |
|
|
| 107 |
void tsp_improve() |
|
| 108 |
{
|
|
| 109 |
bool b; |
|
| 110 |
do {
|
|
| 111 |
b=false; |
|
| 112 |
for(NodeIt n(g);n!=INVALID;++n) |
|
| 113 |
if(tsp_improve(n)) b=true; |
|
| 114 |
} while(b); |
|
| 115 |
} |
|
| 116 |
|
|
| 117 |
void tsp() |
|
| 118 |
{
|
|
| 119 |
for(int i=0;i<N;i++) g.addEdge(nodes[i],nodes[(i+1)%N]); |
|
| 120 |
tsp_improve(); |
|
| 121 |
} |
|
| 122 |
|
|
| 123 |
class Line |
|
| 124 |
{
|
|
| 125 |
public: |
|
| 126 |
Point a; |
|
| 127 |
Point b; |
|
| 128 |
Line(Point _a,Point _b) :a(_a),b(_b) {}
|
|
| 129 |
Line(Node _a,Node _b) : a(coords[_a]),b(coords[_b]) {}
|
|
| 130 |
Line(const Arc &e) : a(coords[g.source(e)]),b(coords[g.target(e)]) {}
|
|
| 131 |
Line(const Edge &e) : a(coords[g.u(e)]),b(coords[g.v(e)]) {}
|
|
| 132 |
}; |
|
| 133 |
|
|
| 134 |
inline std::ostream& operator<<(std::ostream &os, const Line &l) |
|
| 135 |
{
|
|
| 136 |
os << l.a << "->" << l.b; |
|
| 137 |
return os; |
|
| 138 |
} |
|
| 139 |
|
|
| 140 |
bool cross(Line a, Line b) |
|
| 141 |
{
|
|
| 142 |
Point ao=rot90(a.b-a.a); |
|
| 143 |
Point bo=rot90(b.b-b.a); |
|
| 144 |
return (ao*(b.a-a.a))*(ao*(b.b-a.a))<0 && |
|
| 145 |
(bo*(a.a-b.a))*(bo*(a.b-b.a))<0; |
|
| 146 |
} |
|
| 147 |
|
|
| 148 |
struct Parc |
|
| 149 |
{
|
|
| 150 |
Node a; |
|
| 151 |
Node b; |
|
| 152 |
double len; |
|
| 153 |
}; |
|
| 154 |
|
|
| 155 |
bool pedgeLess(Parc a,Parc b) |
|
| 156 |
{
|
|
| 157 |
return a.len<b.len; |
|
| 158 |
} |
|
| 159 |
|
|
| 160 |
std::vector<Edge> arcs; |
|
| 161 |
|
|
| 162 |
namespace _delaunay_bits {
|
|
| 163 |
|
|
| 164 |
struct Part {
|
|
| 165 |
int prev, curr, next; |
|
| 166 |
|
|
| 167 |
Part(int p, int c, int n) : prev(p), curr(c), next(n) {}
|
|
| 168 |
}; |
|
| 169 |
|
|
| 170 |
inline std::ostream& operator<<(std::ostream& os, const Part& part) {
|
|
| 171 |
os << '(' << part.prev << ',' << part.curr << ',' << part.next << ')';
|
|
| 172 |
return os; |
|
| 173 |
} |
|
| 174 |
|
|
| 175 |
inline double circle_point(const Point& p, const Point& q, const Point& r) {
|
|
| 176 |
double a = p.x * (q.y - r.y) + q.x * (r.y - p.y) + r.x * (p.y - q.y); |
|
| 177 |
if (a == 0) return std::numeric_limits<double>::quiet_NaN(); |
|
| 178 |
|
|
| 179 |
double d = (p.x * p.x + p.y * p.y) * (q.y - r.y) + |
|
| 180 |
(q.x * q.x + q.y * q.y) * (r.y - p.y) + |
|
| 181 |
(r.x * r.x + r.y * r.y) * (p.y - q.y); |
|
| 182 |
|
|
| 183 |
double e = (p.x * p.x + p.y * p.y) * (q.x - r.x) + |
|
| 184 |
(q.x * q.x + q.y * q.y) * (r.x - p.x) + |
|
| 185 |
(r.x * r.x + r.y * r.y) * (p.x - q.x); |
|
| 186 |
|
|
| 187 |
double f = (p.x * p.x + p.y * p.y) * (q.x * r.y - r.x * q.y) + |
|
| 188 |
(q.x * q.x + q.y * q.y) * (r.x * p.y - p.x * r.y) + |
|
| 189 |
(r.x * r.x + r.y * r.y) * (p.x * q.y - q.x * p.y); |
|
| 190 |
|
|
| 191 |
return d / (2 * a) + std::sqrt((d * d + e * e) / (4 * a * a) + f / a); |
|
| 192 |
} |
|
| 193 |
|
|
| 194 |
inline bool circle_form(const Point& p, const Point& q, const Point& r) {
|
|
| 195 |
return rot90(q - p) * (r - q) < 0.0; |
|
| 196 |
} |
|
| 197 |
|
|
| 198 |
inline double intersection(const Point& p, const Point& q, double sx) {
|
|
| 199 |
const double epsilon = 1e-8; |
|
| 200 |
|
|
| 201 |
if (p.x == q.x) return (p.y + q.y) / 2.0; |
|
| 202 |
|
|
| 203 |
if (sx < p.x + epsilon) return p.y; |
|
| 204 |
if (sx < q.x + epsilon) return q.y; |
|
| 205 |
|
|
| 206 |
double a = q.x - p.x; |
|
| 207 |
double b = (q.x - sx) * p.y - (p.x - sx) * q.y; |
|
| 208 |
double d = (q.x - sx) * (p.x - sx) * (p - q).normSquare(); |
|
| 209 |
return (b - std::sqrt(d)) / a; |
|
| 210 |
} |
|
| 211 |
|
|
| 212 |
struct YLess {
|
|
| 213 |
|
|
| 214 |
|
|
| 215 |
YLess(const std::vector<Point>& points, double& sweep) |
|
| 216 |
: _points(points), _sweep(sweep) {}
|
|
| 217 |
|
|
| 218 |
bool operator()(const Part& l, const Part& r) const {
|
|
| 219 |
const double epsilon = 1e-8; |
|
| 220 |
|
|
| 221 |
// std::cerr << l << " vs " << r << std::endl; |
|
| 222 |
double lbx = l.prev != -1 ? |
|
| 223 |
intersection(_points[l.prev], _points[l.curr], _sweep) : |
|
| 224 |
- std::numeric_limits<double>::infinity(); |
|
| 225 |
double rbx = r.prev != -1 ? |
|
| 226 |
intersection(_points[r.prev], _points[r.curr], _sweep) : |
|
| 227 |
- std::numeric_limits<double>::infinity(); |
|
| 228 |
double lex = l.next != -1 ? |
|
| 229 |
intersection(_points[l.curr], _points[l.next], _sweep) : |
|
| 230 |
std::numeric_limits<double>::infinity(); |
|
| 231 |
double rex = r.next != -1 ? |
|
| 232 |
intersection(_points[r.curr], _points[r.next], _sweep) : |
|
| 233 |
std::numeric_limits<double>::infinity(); |
|
| 234 |
|
|
| 235 |
if (lbx > lex) std::swap(lbx, lex); |
|
| 236 |
if (rbx > rex) std::swap(rbx, rex); |
|
| 237 |
|
|
| 238 |
if (lex < epsilon + rex && lbx + epsilon < rex) return true; |
|
| 239 |
if (rex < epsilon + lex && rbx + epsilon < lex) return false; |
|
| 240 |
return lex < rex; |
|
| 241 |
} |
|
| 242 |
|
|
| 243 |
const std::vector<Point>& _points; |
|
| 244 |
double& _sweep; |
|
| 245 |
}; |
|
| 246 |
|
|
| 247 |
struct BeachIt; |
|
| 248 |
|
|
| 249 |
typedef std::multimap<double, BeachIt> SpikeHeap; |
|
| 250 |
|
|
| 251 |
typedef std::multimap<Part, SpikeHeap::iterator, YLess> Beach; |
|
| 252 |
|
|
| 253 |
struct BeachIt {
|
|
| 254 |
Beach::iterator it; |
|
| 255 |
|
|
| 256 |
BeachIt(Beach::iterator iter) : it(iter) {}
|
|
| 257 |
}; |
|
| 258 |
|
|
| 259 |
} |
|
| 260 |
|
|
| 261 |
inline void delaunay() {
|
|
| 262 |
Counter cnt("Number of arcs added: ");
|
|
| 263 |
|
|
| 264 |
using namespace _delaunay_bits; |
|
| 265 |
|
|
| 266 |
typedef _delaunay_bits::Part Part; |
|
| 267 |
typedef std::vector<std::pair<double, int> > SiteHeap; |
|
| 268 |
|
|
| 269 |
|
|
| 270 |
std::vector<Point> points; |
|
| 271 |
std::vector<Node> nodes; |
|
| 272 |
|
|
| 273 |
for (NodeIt it(g); it != INVALID; ++it) {
|
|
| 274 |
nodes.push_back(it); |
|
| 275 |
points.push_back(coords[it]); |
|
| 276 |
} |
|
| 277 |
|
|
| 278 |
SiteHeap siteheap(points.size()); |
|
| 279 |
|
|
| 280 |
double sweep; |
|
| 281 |
|
|
| 282 |
|
|
| 283 |
for (int i = 0; i < int(siteheap.size()); ++i) {
|
|
| 284 |
siteheap[i] = std::make_pair(points[i].x, i); |
|
| 285 |
} |
|
| 286 |
|
|
| 287 |
std::sort(siteheap.begin(), siteheap.end()); |
|
| 288 |
sweep = siteheap.front().first; |
|
| 289 |
|
|
| 290 |
YLess yless(points, sweep); |
|
| 291 |
Beach beach(yless); |
|
| 292 |
|
|
| 293 |
SpikeHeap spikeheap; |
|
| 294 |
|
|
| 295 |
std::set<std::pair<int, int> > arcs; |
|
| 296 |
|
|
| 297 |
int siteindex = 0; |
|
| 298 |
{
|
|
| 299 |
SiteHeap front; |
|
| 300 |
|
|
| 301 |
while (siteindex < int(siteheap.size()) && |
|
| 302 |
siteheap[0].first == siteheap[siteindex].first) {
|
|
| 303 |
front.push_back(std::make_pair(points[siteheap[siteindex].second].y, |
|
| 304 |
siteheap[siteindex].second)); |
|
| 305 |
++siteindex; |
|
| 306 |
} |
|
| 307 |
|
|
| 308 |
std::sort(front.begin(), front.end()); |
|
| 309 |
|
|
| 310 |
for (int i = 0; i < int(front.size()); ++i) {
|
|
| 311 |
int prev = (i == 0 ? -1 : front[i - 1].second); |
|
| 312 |
int curr = front[i].second; |
|
| 313 |
int next = (i + 1 == int(front.size()) ? -1 : front[i + 1].second); |
|
| 314 |
|
|
| 315 |
beach.insert(std::make_pair(Part(prev, curr, next), |
|
| 316 |
spikeheap.end())); |
|
| 317 |
} |
|
| 318 |
} |
|
| 319 |
|
|
| 320 |
while (siteindex < int(points.size()) || !spikeheap.empty()) {
|
|
| 321 |
|
|
| 322 |
SpikeHeap::iterator spit = spikeheap.begin(); |
|
| 323 |
|
|
| 324 |
if (siteindex < int(points.size()) && |
|
| 325 |
(spit == spikeheap.end() || siteheap[siteindex].first < spit->first)) {
|
|
| 326 |
int site = siteheap[siteindex].second; |
|
| 327 |
sweep = siteheap[siteindex].first; |
|
| 328 |
|
|
| 329 |
Beach::iterator bit = beach.upper_bound(Part(site, site, site)); |
|
| 330 |
|
|
| 331 |
if (bit->second != spikeheap.end()) {
|
|
| 332 |
spikeheap.erase(bit->second); |
|
| 333 |
} |
|
| 334 |
|
|
| 335 |
int prev = bit->first.prev; |
|
| 336 |
int curr = bit->first.curr; |
|
| 337 |
int next = bit->first.next; |
|
| 338 |
|
|
| 339 |
beach.erase(bit); |
|
| 340 |
|
|
| 341 |
SpikeHeap::iterator pit = spikeheap.end(); |
|
| 342 |
if (prev != -1 && |
|
| 343 |
circle_form(points[prev], points[curr], points[site])) {
|
|
| 344 |
double x = circle_point(points[prev], points[curr], points[site]); |
|
| 345 |
pit = spikeheap.insert(std::make_pair(x, BeachIt(beach.end()))); |
|
| 346 |
pit->second.it = |
|
| 347 |
beach.insert(std::make_pair(Part(prev, curr, site), pit)); |
|
| 348 |
} else {
|
|
| 349 |
beach.insert(std::make_pair(Part(prev, curr, site), pit)); |
|
| 350 |
} |
|
| 351 |
|
|
| 352 |
beach.insert(std::make_pair(Part(curr, site, curr), spikeheap.end())); |
|
| 353 |
|
|
| 354 |
SpikeHeap::iterator nit = spikeheap.end(); |
|
| 355 |
if (next != -1 && |
|
| 356 |
circle_form(points[site], points[curr],points[next])) {
|
|
| 357 |
double x = circle_point(points[site], points[curr], points[next]); |
|
| 358 |
nit = spikeheap.insert(std::make_pair(x, BeachIt(beach.end()))); |
|
| 359 |
nit->second.it = |
|
| 360 |
beach.insert(std::make_pair(Part(site, curr, next), nit)); |
|
| 361 |
} else {
|
|
| 362 |
beach.insert(std::make_pair(Part(site, curr, next), nit)); |
|
| 363 |
} |
|
| 364 |
|
|
| 365 |
++siteindex; |
|
| 366 |
} else {
|
|
| 367 |
sweep = spit->first; |
|
| 368 |
|
|
| 369 |
Beach::iterator bit = spit->second.it; |
|
| 370 |
|
|
| 371 |
int prev = bit->first.prev; |
|
| 372 |
int curr = bit->first.curr; |
|
| 373 |
int next = bit->first.next; |
|
| 374 |
|
|
| 375 |
{
|
|
| 376 |
std::pair<int, int> arc; |
|
| 377 |
|
|
| 378 |
arc = prev < curr ? |
|
| 379 |
std::make_pair(prev, curr) : std::make_pair(curr, prev); |
|
| 380 |
|
|
| 381 |
if (arcs.find(arc) == arcs.end()) {
|
|
| 382 |
arcs.insert(arc); |
|
| 383 |
g.addEdge(nodes[prev], nodes[curr]); |
|
| 384 |
++cnt; |
|
| 385 |
} |
|
| 386 |
|
|
| 387 |
arc = curr < next ? |
|
| 388 |
std::make_pair(curr, next) : std::make_pair(next, curr); |
|
| 389 |
|
|
| 390 |
if (arcs.find(arc) == arcs.end()) {
|
|
| 391 |
arcs.insert(arc); |
|
| 392 |
g.addEdge(nodes[curr], nodes[next]); |
|
| 393 |
++cnt; |
|
| 394 |
} |
|
| 395 |
} |
|
| 396 |
|
|
| 397 |
Beach::iterator pbit = bit; --pbit; |
|
| 398 |
int ppv = pbit->first.prev; |
|
| 399 |
Beach::iterator nbit = bit; ++nbit; |
|
| 400 |
int nnt = nbit->first.next; |
|
| 401 |
|
|
| 402 |
if (bit->second != spikeheap.end()) spikeheap.erase(bit->second); |
|
| 403 |
if (pbit->second != spikeheap.end()) spikeheap.erase(pbit->second); |
|
| 404 |
if (nbit->second != spikeheap.end()) spikeheap.erase(nbit->second); |
|
| 405 |
|
|
| 406 |
beach.erase(nbit); |
|
| 407 |
beach.erase(bit); |
|
| 408 |
beach.erase(pbit); |
|
| 409 |
|
|
| 410 |
SpikeHeap::iterator pit = spikeheap.end(); |
|
| 411 |
if (ppv != -1 && ppv != next && |
|
| 412 |
circle_form(points[ppv], points[prev], points[next])) {
|
|
| 413 |
double x = circle_point(points[ppv], points[prev], points[next]); |
|
| 414 |
if (x < sweep) x = sweep; |
|
| 415 |
pit = spikeheap.insert(std::make_pair(x, BeachIt(beach.end()))); |
|
| 416 |
pit->second.it = |
|
| 417 |
beach.insert(std::make_pair(Part(ppv, prev, next), pit)); |
|
| 418 |
} else {
|
|
| 419 |
beach.insert(std::make_pair(Part(ppv, prev, next), pit)); |
|
| 420 |
} |
|
| 421 |
|
|
| 422 |
SpikeHeap::iterator nit = spikeheap.end(); |
|
| 423 |
if (nnt != -1 && prev != nnt && |
|
| 424 |
circle_form(points[prev], points[next], points[nnt])) {
|
|
| 425 |
double x = circle_point(points[prev], points[next], points[nnt]); |
|
| 426 |
if (x < sweep) x = sweep; |
|
| 427 |
nit = spikeheap.insert(std::make_pair(x, BeachIt(beach.end()))); |
|
| 428 |
nit->second.it = |
|
| 429 |
beach.insert(std::make_pair(Part(prev, next, nnt), nit)); |
|
| 430 |
} else {
|
|
| 431 |
beach.insert(std::make_pair(Part(prev, next, nnt), nit)); |
|
| 432 |
} |
|
| 433 |
|
|
| 434 |
} |
|
| 435 |
} |
|
| 436 |
|
|
| 437 |
for (Beach::iterator it = beach.begin(); it != beach.end(); ++it) {
|
|
| 438 |
int curr = it->first.curr; |
|
| 439 |
int next = it->first.next; |
|
| 440 |
|
|
| 441 |
if (next == -1) continue; |
|
| 442 |
|
|
| 443 |
std::pair<int, int> arc; |
|
| 444 |
|
|
| 445 |
arc = curr < next ? |
|
| 446 |
std::make_pair(curr, next) : std::make_pair(next, curr); |
|
| 447 |
|
|
| 448 |
if (arcs.find(arc) == arcs.end()) {
|
|
| 449 |
arcs.insert(arc); |
|
| 450 |
g.addEdge(nodes[curr], nodes[next]); |
|
| 451 |
++cnt; |
|
| 452 |
} |
|
| 453 |
} |
|
| 454 |
} |
|
| 455 |
|
|
| 456 |
void sparse(int d) |
|
| 457 |
{
|
|
| 458 |
Counter cnt("Number of arcs removed: ");
|
|
| 459 |
Bfs<ListGraph> bfs(g); |
|
| 460 |
for(std::vector<Edge>::reverse_iterator ei=arcs.rbegin(); |
|
| 461 |
ei!=arcs.rend();++ei) |
|
| 462 |
{
|
|
| 463 |
Node a=g.u(*ei); |
|
| 464 |
Node b=g.v(*ei); |
|
| 465 |
g.erase(*ei); |
|
| 466 |
bfs.run(a,b); |
|
| 467 |
if(bfs.predArc(b)==INVALID || bfs.dist(b)>d) |
|
| 468 |
g.addEdge(a,b); |
|
| 469 |
else cnt++; |
|
| 470 |
} |
|
| 471 |
} |
|
| 472 |
|
|
| 473 |
void sparse2(int d) |
|
| 474 |
{
|
|
| 475 |
Counter cnt("Number of arcs removed: ");
|
|
| 476 |
for(std::vector<Edge>::reverse_iterator ei=arcs.rbegin(); |
|
| 477 |
ei!=arcs.rend();++ei) |
|
| 478 |
{
|
|
| 479 |
Node a=g.u(*ei); |
|
| 480 |
Node b=g.v(*ei); |
|
| 481 |
g.erase(*ei); |
|
| 482 |
ConstMap<Arc,int> cegy(1); |
|
| 483 |
Suurballe<ListGraph,ConstMap<Arc,int> > sur(g,cegy); |
|
| 484 |
int k=sur.run(a,b,2); |
|
| 485 |
if(k<2 || sur.totalLength()>d) |
|
| 486 |
g.addEdge(a,b); |
|
| 487 |
else cnt++; |
|
| 488 |
// else std::cout << "Remove arc " << g.id(a) << "-" << g.id(b) << '\n'; |
|
| 489 |
} |
|
| 490 |
} |
|
| 491 |
|
|
| 492 |
void sparseTriangle(int d) |
|
| 493 |
{
|
|
| 494 |
Counter cnt("Number of arcs added: ");
|
|
| 495 |
std::vector<Parc> pedges; |
|
| 496 |
for(NodeIt n(g);n!=INVALID;++n) |
|
| 497 |
for(NodeIt m=++(NodeIt(n));m!=INVALID;++m) |
|
| 498 |
{
|
|
| 499 |
Parc p; |
|
| 500 |
p.a=n; |
|
| 501 |
p.b=m; |
|
| 502 |
p.len=(coords[m]-coords[n]).normSquare(); |
|
| 503 |
pedges.push_back(p); |
|
| 504 |
} |
|
| 505 |
std::sort(pedges.begin(),pedges.end(),pedgeLess); |
|
| 506 |
for(std::vector<Parc>::iterator pi=pedges.begin();pi!=pedges.end();++pi) |
|
| 507 |
{
|
|
| 508 |
Line li(pi->a,pi->b); |
|
| 509 |
EdgeIt e(g); |
|
| 510 |
for(;e!=INVALID && !cross(e,li);++e) ; |
|
| 511 |
Edge ne; |
|
| 512 |
if(e==INVALID) {
|
|
| 513 |
ConstMap<Arc,int> cegy(1); |
|
| 514 |
Suurballe<ListGraph,ConstMap<Arc,int> > sur(g,cegy); |
|
| 515 |
int k=sur.run(pi->a,pi->b,2); |
|
| 516 |
if(k<2 || sur.totalLength()>d) |
|
| 517 |
{
|
|
| 518 |
ne=g.addEdge(pi->a,pi->b); |
|
| 519 |
arcs.push_back(ne); |
|
| 520 |
cnt++; |
|
| 521 |
} |
|
| 522 |
} |
|
| 523 |
} |
|
| 524 |
} |
|
| 525 |
|
|
| 526 |
template <typename Graph, typename CoordMap> |
|
| 527 |
class LengthSquareMap {
|
|
| 528 |
public: |
|
| 529 |
typedef typename Graph::Edge Key; |
|
| 530 |
typedef typename CoordMap::Value::Value Value; |
|
| 531 |
|
|
| 532 |
LengthSquareMap(const Graph& graph, const CoordMap& coords) |
|
| 533 |
: _graph(graph), _coords(coords) {}
|
|
| 534 |
|
|
| 535 |
Value operator[](const Key& key) const {
|
|
| 536 |
return (_coords[_graph.v(key)] - |
|
| 537 |
_coords[_graph.u(key)]).normSquare(); |
|
| 538 |
} |
|
| 539 |
|
|
| 540 |
private: |
|
| 541 |
|
|
| 542 |
const Graph& _graph; |
|
| 543 |
const CoordMap& _coords; |
|
| 544 |
}; |
|
| 545 |
|
|
| 546 |
void minTree() {
|
|
| 547 |
std::vector<Parc> pedges; |
|
| 548 |
Timer T; |
|
| 549 |
std::cout << T.realTime() << "s: Creating delaunay triangulation...\n"; |
|
| 550 |
delaunay(); |
|
| 551 |
std::cout << T.realTime() << "s: Calculating spanning tree...\n"; |
|
| 552 |
LengthSquareMap<ListGraph, ListGraph::NodeMap<Point> > ls(g, coords); |
|
| 553 |
ListGraph::EdgeMap<bool> tree(g); |
|
| 554 |
kruskal(g, ls, tree); |
|
| 555 |
std::cout << T.realTime() << "s: Removing non tree arcs...\n"; |
|
| 556 |
std::vector<Edge> remove; |
|
| 557 |
for (EdgeIt e(g); e != INVALID; ++e) {
|
|
| 558 |
if (!tree[e]) remove.push_back(e); |
|
| 559 |
} |
|
| 560 |
for(int i = 0; i < int(remove.size()); ++i) {
|
|
| 561 |
g.erase(remove[i]); |
|
| 562 |
} |
|
| 563 |
std::cout << T.realTime() << "s: Done\n"; |
|
| 564 |
} |
|
| 565 |
|
|
| 566 |
void tsp2() |
|
| 567 |
{
|
|
| 568 |
std::cout << "Find a tree..." << std::endl; |
|
| 569 |
|
|
| 570 |
minTree(); |
|
| 571 |
|
|
| 572 |
std::cout << "Total arc length (tree) : " << totalLen() << std::endl; |
|
| 573 |
|
|
| 574 |
std::cout << "Make it Euler..." << std::endl; |
|
| 575 |
|
|
| 576 |
{
|
|
| 577 |
std::vector<Node> leafs; |
|
| 578 |
for(NodeIt n(g);n!=INVALID;++n) |
|
| 579 |
if(countIncEdges(g,n)%2==1) leafs.push_back(n); |
|
| 580 |
|
|
| 581 |
// for(unsigned int i=0;i<leafs.size();i+=2) |
|
| 582 |
// g.addArc(leafs[i],leafs[i+1]); |
|
| 583 |
|
|
| 584 |
std::vector<Parc> pedges; |
|
| 585 |
for(unsigned int i=0;i<leafs.size()-1;i++) |
|
| 586 |
for(unsigned int j=i+1;j<leafs.size();j++) |
|
| 587 |
{
|
|
| 588 |
Node n=leafs[i]; |
|
| 589 |
Node m=leafs[j]; |
|
| 590 |
Parc p; |
|
| 591 |
p.a=n; |
|
| 592 |
p.b=m; |
|
| 593 |
p.len=(coords[m]-coords[n]).normSquare(); |
|
| 594 |
pedges.push_back(p); |
|
| 595 |
} |
|
| 596 |
std::sort(pedges.begin(),pedges.end(),pedgeLess); |
|
| 597 |
for(unsigned int i=0;i<pedges.size();i++) |
|
| 598 |
if(countIncEdges(g,pedges[i].a)%2 && |
|
| 599 |
countIncEdges(g,pedges[i].b)%2) |
|
| 600 |
g.addEdge(pedges[i].a,pedges[i].b); |
|
| 601 |
} |
|
| 602 |
|
|
| 603 |
for(NodeIt n(g);n!=INVALID;++n) |
|
| 604 |
if(countIncEdges(g,n)%2 || countIncEdges(g,n)==0 ) |
|
| 605 |
std::cout << "GEBASZ!!!" << std::endl; |
|
| 606 |
|
|
| 607 |
for(EdgeIt e(g);e!=INVALID;++e) |
|
| 608 |
if(g.u(e)==g.v(e)) |
|
| 609 |
std::cout << "LOOP GEBASZ!!!" << std::endl; |
|
| 610 |
|
|
| 611 |
std::cout << "Number of arcs : " << countEdges(g) << std::endl; |
|
| 612 |
|
|
| 613 |
std::cout << "Total arc length (euler) : " << totalLen() << std::endl; |
|
| 614 |
|
|
| 615 |
ListGraph::EdgeMap<Arc> enext(g); |
|
| 616 |
{
|
|
| 617 |
EulerIt<ListGraph> e(g); |
|
| 618 |
Arc eo=e; |
|
| 619 |
Arc ef=e; |
|
| 620 |
// std::cout << "Tour arc: " << g.id(Edge(e)) << std::endl; |
|
| 621 |
for(++e;e!=INVALID;++e) |
|
| 622 |
{
|
|
| 623 |
// std::cout << "Tour arc: " << g.id(Edge(e)) << std::endl; |
|
| 624 |
enext[eo]=e; |
|
| 625 |
eo=e; |
|
| 626 |
} |
|
| 627 |
enext[eo]=ef; |
|
| 628 |
} |
|
| 629 |
|
|
| 630 |
std::cout << "Creating a tour from that..." << std::endl; |
|
| 631 |
|
|
| 632 |
int nnum = countNodes(g); |
|
| 633 |
int ednum = countEdges(g); |
|
| 634 |
|
|
| 635 |
for(Arc p=enext[EdgeIt(g)];ednum>nnum;p=enext[p]) |
|
| 636 |
{
|
|
| 637 |
// std::cout << "Checking arc " << g.id(p) << std::endl; |
|
| 638 |
Arc e=enext[p]; |
|
| 639 |
Arc f=enext[e]; |
|
| 640 |
Node n2=g.source(f); |
|
| 641 |
Node n1=g.oppositeNode(n2,e); |
|
| 642 |
Node n3=g.oppositeNode(n2,f); |
|
| 643 |
if(countIncEdges(g,n2)>2) |
|
| 644 |
{
|
|
| 645 |
// std::cout << "Remove an Arc" << std::endl; |
|
| 646 |
Arc ff=enext[f]; |
|
| 647 |
g.erase(e); |
|
| 648 |
g.erase(f); |
|
| 649 |
if(n1!=n3) |
|
| 650 |
{
|
|
| 651 |
Arc ne=g.direct(g.addEdge(n1,n3),n1); |
|
| 652 |
enext[p]=ne; |
|
| 653 |
enext[ne]=ff; |
|
| 654 |
ednum--; |
|
| 655 |
} |
|
| 656 |
else {
|
|
| 657 |
enext[p]=ff; |
|
| 658 |
ednum-=2; |
|
| 659 |
} |
|
| 660 |
} |
|
| 661 |
} |
|
| 662 |
|
|
| 663 |
std::cout << "Total arc length (tour) : " << totalLen() << std::endl; |
|
| 664 |
|
|
| 665 |
std::cout << "2-opt the tour..." << std::endl; |
|
| 666 |
|
|
| 667 |
tsp_improve(); |
|
| 668 |
|
|
| 669 |
std::cout << "Total arc length (2-opt tour) : " << totalLen() << std::endl; |
|
| 670 |
} |
|
| 671 |
|
|
| 672 |
|
|
| 673 |
int main(int argc,const char **argv) |
|
| 674 |
{
|
|
| 675 |
ArgParser ap(argc,argv); |
|
| 676 |
|
|
| 677 |
// bool eps; |
|
| 678 |
bool disc_d, square_d, gauss_d; |
|
| 679 |
// bool tsp_a,two_a,tree_a; |
|
| 680 |
int num_of_cities=1; |
|
| 681 |
double area=1; |
|
| 682 |
N=100; |
|
| 683 |
// girth=10; |
|
| 684 |
std::string ndist("disc");
|
|
| 685 |
ap.refOption("n", "Number of nodes (default is 100)", N)
|
|
| 686 |
.intOption("g", "Girth parameter (default is 10)", 10)
|
|
| 687 |
.refOption("cities", "Number of cities (default is 1)", num_of_cities)
|
|
| 688 |
.refOption("area", "Full relative area of the cities (default is 1)", area)
|
|
| 689 |
.refOption("disc", "Nodes are evenly distributed on a unit disc (default)",
|
|
| 690 |
disc_d) |
|
| 691 |
.optionGroup("dist", "disc")
|
|
| 692 |
.refOption("square", "Nodes are evenly distributed on a unit square",
|
|
| 693 |
square_d) |
|
| 694 |
.optionGroup("dist", "square")
|
|
| 695 |
.refOption("gauss", "Nodes are located according to a two-dim Gauss "
|
|
| 696 |
"distribution", gauss_d) |
|
| 697 |
.optionGroup("dist", "gauss")
|
|
| 698 |
.onlyOneGroup("dist")
|
|
| 699 |
.boolOption("eps", "Also generate .eps output (<prefix>.eps)")
|
|
| 700 |
.boolOption("nonodes", "Draw only the edges in the generated .eps output")
|
|
| 701 |
.boolOption("dir", "Directed graph is generated (each edge is replaced by "
|
|
| 702 |
"two directed arcs)") |
|
| 703 |
.boolOption("2con", "Create a two connected planar graph")
|
|
| 704 |
.optionGroup("alg","2con")
|
|
| 705 |
.boolOption("tree", "Create a min. cost spanning tree")
|
|
| 706 |
.optionGroup("alg","tree")
|
|
| 707 |
.boolOption("tsp", "Create a TSP tour")
|
|
| 708 |
.optionGroup("alg","tsp")
|
|
| 709 |
.boolOption("tsp2", "Create a TSP tour (tree based)")
|
|
| 710 |
.optionGroup("alg","tsp2")
|
|
| 711 |
.boolOption("dela", "Delaunay triangulation graph")
|
|
| 712 |
.optionGroup("alg","dela")
|
|
| 713 |
.onlyOneGroup("alg")
|
|
| 714 |
.boolOption("rand", "Use time seed for random number generator")
|
|
| 715 |
.optionGroup("rand", "rand")
|
|
| 716 |
.intOption("seed", "Random seed", -1)
|
|
| 717 |
.optionGroup("rand", "seed")
|
|
| 718 |
.onlyOneGroup("rand")
|
|
| 719 |
.other("[prefix]","Prefix of the output files. Default is 'lgf-gen-out'")
|
|
| 720 |
.run(); |
|
| 721 |
|
|
| 722 |
if (ap["rand"]) {
|
|
| 723 |
int seed = int(time(0)); |
|
| 724 |
std::cout << "Random number seed: " << seed << std::endl; |
|
| 725 |
rnd = Random(seed); |
|
| 726 |
} |
|
| 727 |
if (ap.given("seed")) {
|
|
| 728 |
int seed = ap["seed"]; |
|
| 729 |
std::cout << "Random number seed: " << seed << std::endl; |
|
| 730 |
rnd = Random(seed); |
|
| 731 |
} |
|
| 732 |
|
|
| 733 |
std::string prefix; |
|
| 734 |
switch(ap.files().size()) |
|
| 735 |
{
|
|
| 736 |
case 0: |
|
| 737 |
prefix="lgf-gen-out"; |
|
| 738 |
break; |
|
| 739 |
case 1: |
|
| 740 |
prefix=ap.files()[0]; |
|
| 741 |
break; |
|
| 742 |
default: |
|
| 743 |
std::cerr << "\nAt most one prefix can be given\n\n"; |
|
| 744 |
exit(1); |
|
| 745 |
} |
|
| 746 |
|
|
| 747 |
double sum_sizes=0; |
|
| 748 |
std::vector<double> sizes; |
|
| 749 |
std::vector<double> cum_sizes; |
|
| 750 |
for(int s=0;s<num_of_cities;s++) |
|
| 751 |
{
|
|
| 752 |
// sum_sizes+=rnd.exponential(); |
|
| 753 |
double d=rnd(); |
|
| 754 |
sum_sizes+=d; |
|
| 755 |
sizes.push_back(d); |
|
| 756 |
cum_sizes.push_back(sum_sizes); |
|
| 757 |
} |
|
| 758 |
int i=0; |
|
| 759 |
for(int s=0;s<num_of_cities;s++) |
|
| 760 |
{
|
|
| 761 |
Point center=(num_of_cities==1?Point(0,0):rnd.disc()); |
|
| 762 |
if(gauss_d) |
|
| 763 |
for(;i<N*(cum_sizes[s]/sum_sizes);i++) {
|
|
| 764 |
Node n=g.addNode(); |
|
| 765 |
nodes.push_back(n); |
|
| 766 |
coords[n]=center+rnd.gauss2()*area* |
|
| 767 |
std::sqrt(sizes[s]/sum_sizes); |
|
| 768 |
} |
|
| 769 |
else if(square_d) |
|
| 770 |
for(;i<N*(cum_sizes[s]/sum_sizes);i++) {
|
|
| 771 |
Node n=g.addNode(); |
|
| 772 |
nodes.push_back(n); |
|
| 773 |
coords[n]=center+Point(rnd()*2-1,rnd()*2-1)*area* |
|
| 774 |
std::sqrt(sizes[s]/sum_sizes); |
|
| 775 |
} |
|
| 776 |
else if(disc_d || true) |
|
| 777 |
for(;i<N*(cum_sizes[s]/sum_sizes);i++) {
|
|
| 778 |
Node n=g.addNode(); |
|
| 779 |
nodes.push_back(n); |
|
| 780 |
coords[n]=center+rnd.disc()*area* |
|
| 781 |
std::sqrt(sizes[s]/sum_sizes); |
|
| 782 |
} |
|
| 783 |
} |
|
| 784 |
|
|
| 785 |
// for (ListGraph::NodeIt n(g); n != INVALID; ++n) {
|
|
| 786 |
// std::cerr << coords[n] << std::endl; |
|
| 787 |
// } |
|
| 788 |
|
|
| 789 |
if(ap["tsp"]) {
|
|
| 790 |
tsp(); |
|
| 791 |
std::cout << "#2-opt improvements: " << tsp_impr_num << std::endl; |
|
| 792 |
} |
|
| 793 |
if(ap["tsp2"]) {
|
|
| 794 |
tsp2(); |
|
| 795 |
std::cout << "#2-opt improvements: " << tsp_impr_num << std::endl; |
|
| 796 |
} |
|
| 797 |
else if(ap["2con"]) {
|
|
| 798 |
std::cout << "Make triangles\n"; |
|
| 799 |
// triangle(); |
|
| 800 |
sparseTriangle(ap["g"]); |
|
| 801 |
std::cout << "Make it sparser\n"; |
|
| 802 |
sparse2(ap["g"]); |
|
| 803 |
} |
|
| 804 |
else if(ap["tree"]) {
|
|
| 805 |
minTree(); |
|
| 806 |
} |
|
| 807 |
else if(ap["dela"]) {
|
|
| 808 |
delaunay(); |
|
| 809 |
} |
|
| 810 |
|
|
| 811 |
|
|
| 812 |
std::cout << "Number of nodes : " << countNodes(g) << std::endl; |
|
| 813 |
std::cout << "Number of arcs : " << countEdges(g) << std::endl; |
|
| 814 |
double tlen=0; |
|
| 815 |
for(EdgeIt e(g);e!=INVALID;++e) |
|
| 816 |
tlen+=std::sqrt((coords[g.v(e)]-coords[g.u(e)]).normSquare()); |
|
| 817 |
std::cout << "Total arc length : " << tlen << std::endl; |
|
| 818 |
|
|
| 819 |
if(ap["eps"]) |
|
| 820 |
graphToEps(g,prefix+".eps").scaleToA4(). |
|
| 821 |
scale(600).nodeScale(.005).arcWidthScale(.001).preScale(false). |
|
| 822 |
coords(coords).hideNodes(ap.given("nonodes")).run();
|
|
| 823 |
|
|
| 824 |
if(ap["dir"]) |
|
| 825 |
DigraphWriter<ListGraph>(g,prefix+".lgf"). |
|
| 826 |
nodeMap("coordinates_x",scaleMap(xMap(coords),600)).
|
|
| 827 |
nodeMap("coordinates_y",scaleMap(yMap(coords),600)).
|
|
| 828 |
run(); |
|
| 829 |
else GraphWriter<ListGraph>(g,prefix+".lgf"). |
|
| 830 |
nodeMap("coordinates_x",scaleMap(xMap(coords),600)).
|
|
| 831 |
nodeMap("coordinates_y",scaleMap(yMap(coords),600)).
|
|
| 832 |
run(); |
|
| 833 |
} |
|
| 834 |
|
| 1 | 1 |
syntax: glob |
| 2 | 2 |
*.obj |
| 3 | 3 |
*.orig |
| 4 | 4 |
*.rej |
| 5 | 5 |
*~ |
| 6 | 6 |
*.o |
| 7 | 7 |
*.log |
| 8 | 8 |
*.lo |
| 9 | 9 |
*.tar.* |
| 10 | 10 |
*.bak |
| 11 | 11 |
Makefile.in |
| 12 | 12 |
aclocal.m4 |
| 13 | 13 |
config.h.in |
| 14 | 14 |
configure |
| 15 | 15 |
Makefile |
| 16 | 16 |
config.h |
| 17 | 17 |
config.log |
| 18 | 18 |
config.status |
| 19 | 19 |
libtool |
| 20 | 20 |
stamp-h1 |
| 21 | 21 |
lemon/lemon.pc |
| 22 | 22 |
lemon/libemon.la |
| 23 | 23 |
lemon/stamp-h2 |
| 24 | 24 |
doc/Doxyfile |
| 25 |
cmake/version.cmake |
|
| 25 | 26 |
.dirstamp |
| 26 | 27 |
.libs/* |
| 27 | 28 |
.deps/* |
| 28 | 29 |
demo/*.eps |
| 29 | 30 |
m4/libtool.m4 |
| 30 | 31 |
m4/ltoptions.m4 |
| 31 | 32 |
m4/ltsugar.m4 |
| 32 | 33 |
m4/ltversion.m4 |
| 33 | 34 |
m4/lt~obsolete.m4 |
| 34 | 35 |
|
| 35 | 36 |
syntax: regexp |
| 36 | 37 |
(.*/)?\#[^/]*\#$ |
| 37 | 38 |
(.*/)?\.\#[^/]*$ |
| 38 | 39 |
^doc/html/.* |
| 39 | 40 |
^doc/.*\.tag |
| 40 | 41 |
^autom4te.cache/.* |
| 41 | 42 |
^build-aux/.* |
| 42 |
^objs.*/.* |
|
| 43 |
^.*objs.*/.* |
|
| 43 | 44 |
^test/[a-z_]*$ |
| 44 | 45 |
^tools/[a-z-_]*$ |
| 45 | 46 |
^demo/.*_demo$ |
| 46 |
^build/.* |
|
| 47 |
^.*build.*/.* |
|
| 47 | 48 |
^doc/gen-images/.* |
| 48 | 49 |
CMakeFiles |
| 49 | 50 |
DartTestfile.txt |
| 50 | 51 |
cmake_install.cmake |
| 51 | 52 |
CMakeCache.txt |
| 1 | 1 |
CMAKE_MINIMUM_REQUIRED(VERSION 2.6) |
| 2 | 2 |
|
| 3 | 3 |
SET(PROJECT_NAME "LEMON") |
| 4 |
SET(PROJECT_VERSION "hg-tip" CACHE STRING "The version string.") |
|
| 5 |
|
|
| 6 | 4 |
PROJECT(${PROJECT_NAME})
|
| 7 | 5 |
|
| 8 |
|
|
| 6 |
IF(EXISTS ${PROJECT_SOURCE_DIR}/cmake/version.cmake)
|
|
| 7 |
INCLUDE(${PROJECT_SOURCE_DIR}/cmake/version.cmake)
|
|
| 8 |
ELSEIF(DEFINED ENV{LEMON_VERSION})
|
|
| 9 |
SET(LEMON_VERSION $ENV{LEMON_VERSION} CACHE STRING "LEMON version string.")
|
|
| 10 |
ELSE() |
|
| 11 |
EXECUTE_PROCESS( |
|
| 12 |
COMMAND hg id -i |
|
| 13 |
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
|
|
| 14 |
OUTPUT_VARIABLE HG_REVISION |
|
| 15 |
ERROR_QUIET |
|
| 16 |
OUTPUT_STRIP_TRAILING_WHITESPACE |
|
| 17 |
) |
|
| 18 |
IF(HG_REVISION STREQUAL "") |
|
| 19 |
SET(HG_REVISION "hg-tip") |
|
| 20 |
ENDIF() |
|
| 21 |
SET(LEMON_VERSION ${HG_REVISION} CACHE STRING "LEMON version string.")
|
|
| 22 |
ENDIF() |
|
| 9 | 23 |
|
| 10 |
INCLUDE(FindDoxygen) |
|
| 11 |
INCLUDE(FindGhostscript) |
|
| 24 |
SET(PROJECT_VERSION ${LEMON_VERSION})
|
|
| 25 |
|
|
| 26 |
SET(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
|
|
| 27 |
|
|
| 28 |
FIND_PACKAGE(Doxygen) |
|
| 29 |
FIND_PACKAGE(Ghostscript) |
|
| 30 |
FIND_PACKAGE(GLPK 4.33) |
|
| 31 |
FIND_PACKAGE(CPLEX) |
|
| 32 |
FIND_PACKAGE(COIN) |
|
| 33 |
|
|
| 34 |
INCLUDE(CheckTypeSize) |
|
| 35 |
CHECK_TYPE_SIZE("long long" LONG_LONG)
|
|
| 36 |
SET(LEMON_HAVE_LONG_LONG ${HAVE_LONG_LONG})
|
|
| 37 |
|
|
| 38 |
INCLUDE(FindPythonInterp) |
|
| 12 | 39 |
|
| 13 | 40 |
ENABLE_TESTING() |
| 14 | 41 |
|
| 15 | 42 |
ADD_SUBDIRECTORY(lemon) |
| 16 |
ADD_SUBDIRECTORY(demo) |
|
| 17 |
ADD_SUBDIRECTORY(doc) |
|
| 18 |
|
|
| 43 |
IF(${CMAKE_SOURCE_DIR} STREQUAL ${PROJECT_SOURCE_DIR})
|
|
| 44 |
ADD_SUBDIRECTORY(demo) |
|
| 45 |
ADD_SUBDIRECTORY(tools) |
|
| 46 |
ADD_SUBDIRECTORY(doc) |
|
| 47 |
ADD_SUBDIRECTORY(test) |
|
| 48 |
ENDIF() |
|
| 19 | 49 |
|
| 20 |
IF(WIN32) |
|
| 21 |
INSTALL(FILES ${CMAKE_SOURCE_DIR}/cmake/nsis/lemon.ico
|
|
| 22 |
DESTINATION bin) |
|
| 23 |
ENDIF(WIN32) |
|
| 50 |
CONFIGURE_FILE( |
|
| 51 |
${PROJECT_SOURCE_DIR}/cmake/LEMONConfig.cmake.in
|
|
| 52 |
${PROJECT_BINARY_DIR}/cmake/LEMONConfig.cmake
|
|
| 53 |
@ONLY |
|
| 54 |
) |
|
| 55 |
IF(UNIX) |
|
| 56 |
INSTALL( |
|
| 57 |
FILES ${PROJECT_BINARY_DIR}/cmake/LEMONConfig.cmake
|
|
| 58 |
DESTINATION share/lemon/cmake |
|
| 59 |
) |
|
| 60 |
ELSEIF(WIN32) |
|
| 61 |
INSTALL( |
|
| 62 |
FILES ${PROJECT_BINARY_DIR}/cmake/LEMONConfig.cmake
|
|
| 63 |
DESTINATION cmake |
|
| 64 |
) |
|
| 65 |
ENDIF() |
|
| 24 | 66 |
|
| 25 |
IF(WIN32) |
|
| 67 |
IF(${CMAKE_SOURCE_DIR} STREQUAL ${PROJECT_SOURCE_DIR} AND WIN32)
|
|
| 26 | 68 |
SET(CPACK_PACKAGE_NAME ${PROJECT_NAME})
|
| 27 |
SET(CPACK_PACKAGE_VENDOR |
|
| 28 |
"EGRES - Egervary Research Group on Combinatorial Optimization") |
|
| 69 |
SET(CPACK_PACKAGE_VENDOR "EGRES") |
|
| 29 | 70 |
SET(CPACK_PACKAGE_DESCRIPTION_SUMMARY |
| 30 |
"LEMON - Library of Efficient Models and Optimization in Networks") |
|
| 31 |
SET(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_SOURCE_DIR}/LICENSE")
|
|
| 71 |
"LEMON - Library for Efficient Modeling and Optimization in Networks") |
|
| 72 |
SET(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE")
|
|
| 32 | 73 |
|
| 33 | 74 |
SET(CPACK_PACKAGE_VERSION ${PROJECT_VERSION})
|
| 34 | 75 |
|
| 35 | 76 |
SET(CPACK_PACKAGE_INSTALL_DIRECTORY |
| 36 | 77 |
"${PROJECT_NAME} ${PROJECT_VERSION}")
|
| 37 | 78 |
SET(CPACK_PACKAGE_INSTALL_REGISTRY_KEY |
| 38 | 79 |
"${PROJECT_NAME} ${PROJECT_VERSION}")
|
| 39 | 80 |
|
| 40 |
# Variables to generate a component-based installer. |
|
| 41 |
#SET(CPACK_COMPONENTS_ALL headers library html_documentation) |
|
| 81 |
SET(CPACK_COMPONENTS_ALL headers library html_documentation bin) |
|
| 42 | 82 |
|
| 43 |
#SET(CPACK_COMPONENT_HEADERS_DISPLAY_NAME "C++ headers") |
|
| 44 |
#SET(CPACK_COMPONENT_LIBRARY_DISPLAY_NAME "Static library") |
|
| 45 |
|
|
| 83 |
SET(CPACK_COMPONENT_HEADERS_DISPLAY_NAME "C++ headers") |
|
| 84 |
SET(CPACK_COMPONENT_LIBRARY_DISPLAY_NAME "Dynamic-link library") |
|
| 85 |
SET(CPACK_COMPONENT_BIN_DISPLAY_NAME "Command line utilities") |
|
| 86 |
SET(CPACK_COMPONENT_HTML_DOCUMENTATION_DISPLAY_NAME "HTML documentation") |
|
| 46 | 87 |
|
| 47 |
#SET(CPACK_COMPONENT_HEADERS_DESCRIPTION |
|
| 48 |
# "C++ header files for use with the LEMON library") |
|
| 49 |
#SET(CPACK_COMPONENT_LIBRARY_DESCRIPTION |
|
| 50 |
# "Static library used to build programs with LEMON") |
|
| 51 |
#SET(CPACK_COMPONENT_HTML_DOCUMENTATION_DESCRIPTION |
|
| 52 |
# "Doxygen generated documentation") |
|
| 88 |
SET(CPACK_COMPONENT_HEADERS_DESCRIPTION |
|
| 89 |
"C++ header files") |
|
| 90 |
SET(CPACK_COMPONENT_LIBRARY_DESCRIPTION |
|
| 91 |
"DLL and import library") |
|
| 92 |
SET(CPACK_COMPONENT_BIN_DESCRIPTION |
|
| 93 |
"Command line utilities") |
|
| 94 |
SET(CPACK_COMPONENT_HTML_DOCUMENTATION_DESCRIPTION |
|
| 95 |
"Doxygen generated documentation") |
|
| 53 | 96 |
|
| 54 |
|
|
| 97 |
SET(CPACK_COMPONENT_HEADERS_DEPENDS library) |
|
| 55 | 98 |
|
| 56 |
#SET(CPACK_COMPONENT_HEADERS_GROUP "Development") |
|
| 57 |
#SET(CPACK_COMPONENT_LIBRARY_GROUP "Development") |
|
| 58 |
|
|
| 99 |
SET(CPACK_COMPONENT_HEADERS_GROUP "Development") |
|
| 100 |
SET(CPACK_COMPONENT_LIBRARY_GROUP "Development") |
|
| 101 |
SET(CPACK_COMPONENT_HTML_DOCUMENTATION_GROUP "Documentation") |
|
| 59 | 102 |
|
| 60 |
#SET(CPACK_COMPONENT_GROUP_DEVELOPMENT_DESCRIPTION |
|
| 61 |
# "Components needed to develop software using LEMON") |
|
| 62 |
#SET(CPACK_COMPONENT_GROUP_DOCUMENTATION_DESCRIPTION |
|
| 63 |
# "Documentation of LEMON") |
|
| 103 |
SET(CPACK_COMPONENT_GROUP_DEVELOPMENT_DESCRIPTION |
|
| 104 |
"Components needed to develop software using LEMON") |
|
| 105 |
SET(CPACK_COMPONENT_GROUP_DOCUMENTATION_DESCRIPTION |
|
| 106 |
"Documentation of LEMON") |
|
| 64 | 107 |
|
| 65 |
|
|
| 108 |
SET(CPACK_ALL_INSTALL_TYPES Full Developer) |
|
| 66 | 109 |
|
| 67 |
#SET(CPACK_COMPONENT_HEADERS_INSTALL_TYPES Developer Full) |
|
| 68 |
#SET(CPACK_COMPONENT_LIBRARY_INSTALL_TYPES Developer Full) |
|
| 69 |
|
|
| 110 |
SET(CPACK_COMPONENT_HEADERS_INSTALL_TYPES Developer Full) |
|
| 111 |
SET(CPACK_COMPONENT_LIBRARY_INSTALL_TYPES Developer Full) |
|
| 112 |
SET(CPACK_COMPONENT_HTML_DOCUMENTATION_INSTALL_TYPES Full) |
|
| 70 | 113 |
|
| 71 | 114 |
SET(CPACK_GENERATOR "NSIS") |
| 72 |
SET(CPACK_NSIS_MUI_ICON "${CMAKE_SOURCE_DIR}/cmake/nsis/lemon.ico")
|
|
| 73 |
SET(CPACK_NSIS_MUI_UNIICON "${CMAKE_SOURCE_DIR}/cmake/nsis/uninstall.ico")
|
|
| 74 |
|
|
| 115 |
SET(CPACK_NSIS_MUI_ICON "${PROJECT_SOURCE_DIR}/cmake/nsis/lemon.ico")
|
|
| 116 |
SET(CPACK_NSIS_MUI_UNIICON "${PROJECT_SOURCE_DIR}/cmake/nsis/uninstall.ico")
|
|
| 117 |
#SET(CPACK_PACKAGE_ICON "${PROJECT_SOURCE_DIR}/cmake/nsis\\\\installer.bmp")
|
|
| 75 | 118 |
SET(CPACK_NSIS_INSTALLED_ICON_NAME "bin\\\\lemon.ico") |
| 76 | 119 |
SET(CPACK_NSIS_DISPLAY_NAME "${CPACK_PACKAGE_INSTALL_DIRECTORY} ${PROJECT_NAME}")
|
| 77 | 120 |
SET(CPACK_NSIS_HELP_LINK "http:\\\\\\\\lemon.cs.elte.hu") |
| 78 | 121 |
SET(CPACK_NSIS_URL_INFO_ABOUT "http:\\\\\\\\lemon.cs.elte.hu") |
| 79 | 122 |
SET(CPACK_NSIS_CONTACT "lemon-user@lemon.cs.elte.hu") |
| 80 | 123 |
SET(CPACK_NSIS_CREATE_ICONS_EXTRA " |
| 81 |
CreateShortCut \\\"$SMPROGRAMS\\\\$STARTMENU_FOLDER\\\\Documentation.lnk\\\" \\\"$INSTDIR\\\\doc\\\\index.html\\\" |
|
| 124 |
CreateShortCut \\\"$SMPROGRAMS\\\\$STARTMENU_FOLDER\\\\Documentation.lnk\\\" \\\"$INSTDIR\\\\share\\\\doc\\\\index.html\\\" |
|
| 82 | 125 |
") |
| 83 | 126 |
SET(CPACK_NSIS_DELETE_ICONS_EXTRA " |
| 84 | 127 |
!insertmacro MUI_STARTMENU_GETFOLDER Application $MUI_TEMP |
| 85 | 128 |
Delete \\\"$SMPROGRAMS\\\\$MUI_TEMP\\\\Documentation.lnk\\\" |
| 86 | 129 |
") |
| 87 | 130 |
|
| 88 | 131 |
INCLUDE(CPack) |
| 89 |
ENDIF( |
|
| 132 |
ENDIF() |
| 1 | 1 |
Installation Instructions |
| 2 | 2 |
========================= |
| 3 | 3 |
|
| 4 | 4 |
Since you are reading this I assume you already obtained one of the release |
| 5 | 5 |
tarballs and successfully extracted it. The latest version of LEMON is |
| 6 | 6 |
available at our web page (http://lemon.cs.elte.hu/). |
| 7 | 7 |
|
| 8 |
LEMON provides two different build environments, one is based on "autotool", |
|
| 9 |
while the other is based on "cmake". This file contains instructions only for |
|
| 10 |
the former one, which is the recommended build environment on Linux, Mac OSX |
|
| 11 |
and other unices or if you use Cygwin on Windows. For cmake installation |
|
| 12 |
instructions visit http://lemon.cs.elte.hu. |
|
| 13 |
|
|
| 8 | 14 |
In order to install LEMON from the extracted source tarball you have to |
| 9 | 15 |
issue the following commands: |
| 10 | 16 |
|
| 11 | 17 |
1. `cd lemon-x.y.z' |
| 12 | 18 |
|
| 13 | 19 |
This command changes to the directory which was created when you |
| 14 | 20 |
extracted the sources. The x.y.z part is a version number. |
| 15 | 21 |
|
| 16 | 22 |
2. `./configure' |
| 17 | 23 |
|
| 18 | 24 |
This command runs the configure shell script, which does some checks and |
| 19 | 25 |
creates the makefiles. |
| 20 | 26 |
|
| 21 | 27 |
3. `make' |
| 22 | 28 |
|
| 23 | 29 |
This command compiles the non-template part of LEMON into libemon.a |
| 24 |
file. It also compiles the programs in the tools and demo subdirectories |
|
| 25 |
when enabled. |
|
| 30 |
file. It also compiles the programs in the tools subdirectory by |
|
| 31 |
default. |
|
| 26 | 32 |
|
| 27 | 33 |
4. `make check' |
| 28 | 34 |
|
| 29 | 35 |
This step is optional, but recommended. It runs the test programs that |
| 30 | 36 |
we developed for LEMON to check whether the library works properly on |
| 31 | 37 |
your platform. |
| 32 | 38 |
|
| 33 | 39 |
5. `make install' |
| 34 | 40 |
|
| 35 | 41 |
This command installs LEMON under /usr/local (you will need root |
| 36 | 42 |
privileges to be able to do that). If you want to install it to some |
| 37 | 43 |
other location, then pass the --prefix=DIRECTORY flag to configure in |
| 38 | 44 |
step 2. For example: `./configure --prefix=/home/username/lemon'. |
| 39 | 45 |
|
| 40 | 46 |
6. `make install-html' |
| 41 | 47 |
|
| 42 | 48 |
This command installs the documentation under share/doc/lemon/docs. The |
| 43 | 49 |
generated documentation is included in the tarball. If you want to |
| 44 | 50 |
generate it yourself, then run `make html'. Note that for this you need |
| 45 | 51 |
to have the following programs installed: Doxygen, Graphviz, Ghostscript, |
| 46 | 52 |
Latex. |
| 47 | 53 |
|
| 48 | 54 |
|
| 49 | 55 |
Configure Options and Variables |
| 50 | 56 |
=============================== |
| 51 | 57 |
|
| 52 | 58 |
In step 2 you can customize the actions of configure by setting variables |
| 53 | 59 |
and passing options to it. This can be done like this: |
| 54 | 60 |
`./configure [OPTION]... [VARIABLE=VALUE]...' |
| 55 | 61 |
|
| 56 | 62 |
Below you will find some useful variables and options (see `./configure --help' |
| 57 | 63 |
for more): |
| 58 | 64 |
|
| 59 | 65 |
CXX='comp' |
| 60 | 66 |
|
| 61 | 67 |
Change the C++ compiler to 'comp'. |
| 62 | 68 |
|
| 63 | 69 |
CXXFLAGS='flags' |
| 64 | 70 |
|
| 65 | 71 |
Pass the 'flags' to the compiler. For example CXXFLAGS='-O3 -march=pentium-m' |
| 66 | 72 |
turns on generation of aggressively optimized Pentium-M specific code. |
| 67 | 73 |
|
| 68 | 74 |
--prefix=PREFIX |
| 69 | 75 |
|
| 70 | 76 |
Set the installation prefix to PREFIX. By default it is /usr/local. |
| 71 | 77 |
|
| 72 |
--enable-demo |
|
| 73 |
|
|
| 74 |
Build the examples in the demo subdirectory. |
|
| 75 |
|
|
| 76 |
--disable-demo |
|
| 77 |
|
|
| 78 |
Do not build the examples in the demo subdirectory (default). |
|
| 79 |
|
|
| 80 | 78 |
--enable-tools |
| 81 | 79 |
|
| 82 | 80 |
Build the programs in the tools subdirectory (default). |
| 83 | 81 |
|
| 84 | 82 |
--disable-tools |
| 85 | 83 |
|
| 86 | 84 |
Do not build the programs in the tools subdirectory. |
| 87 | 85 |
|
| 88 | 86 |
--with-glpk[=PREFIX] |
| 89 | 87 |
|
| 90 | 88 |
Enable GLPK support (default). You should specify the prefix too if |
| 91 | 89 |
you installed GLPK to some non-standard location (e.g. your home |
| 92 | 90 |
directory). If it is not found, GLPK support will be disabled. |
| 93 | 91 |
|
| 94 | 92 |
--with-glpk-includedir=DIR |
| 95 | 93 |
|
| 96 | 94 |
The directory where the GLPK header files are located. This is only |
| 97 | 95 |
useful when the GLPK headers and libraries are not under the same |
| 98 | 96 |
prefix (which is unlikely). |
| 99 | 97 |
|
| 100 | 98 |
--with-glpk-libdir=DIR |
| 101 | 99 |
|
| 102 | 100 |
The directory where the GLPK libraries are located. This is only |
| 103 | 101 |
useful when the GLPK headers and libraries are not under the same |
| 104 | 102 |
prefix (which is unlikely). |
| 105 | 103 |
|
| 106 | 104 |
--without-glpk |
| 107 | 105 |
|
| 108 | 106 |
Disable GLPK support. |
| 109 | 107 |
|
| 110 | 108 |
--with-cplex[=PREFIX] |
| 111 | 109 |
|
| 112 | 110 |
Enable CPLEX support (default). You should specify the prefix too |
| 113 | 111 |
if you installed CPLEX to some non-standard location |
| 114 | 112 |
(e.g. /opt/ilog/cplex75). If it is not found, CPLEX support will be |
| 115 | 113 |
disabled. |
| 116 | 114 |
|
| 117 | 115 |
--with-cplex-includedir=DIR |
| 118 | 116 |
|
| 119 | 117 |
The directory where the CPLEX header files are located. This is |
| 120 | 118 |
only useful when the CPLEX headers and libraries are not under the |
| 121 | 119 |
same prefix (e.g. /usr/local/cplex/cplex75/include). |
| 122 | 120 |
|
| 123 | 121 |
--with-cplex-libdir=DIR |
| 124 | 122 |
|
| 125 | 123 |
The directory where the CPLEX libraries are located. This is only |
| 126 | 124 |
useful when the CPLEX headers and libraries are not under the same |
| 127 | 125 |
prefix (e.g. |
| 128 | 126 |
/usr/local/cplex/cplex75/lib/i86_linux2_glibc2.2_gcc3.0/static_pic_mt). |
| 129 | 127 |
|
| 130 | 128 |
--without-cplex |
| 131 | 129 |
|
| 132 | 130 |
Disable CPLEX support. |
| 133 | 131 |
|
| 134 | 132 |
--with-soplex[=PREFIX] |
| 135 | 133 |
|
| 136 | 134 |
Enable SoPlex support (default). You should specify the prefix too if |
| 137 | 135 |
you installed SoPlex to some non-standard location (e.g. your home |
| 138 | 136 |
directory). If it is not found, SoPlex support will be disabled. |
| 139 | 137 |
|
| 140 | 138 |
--with-soplex-includedir=DIR |
| 141 | 139 |
|
| 142 | 140 |
The directory where the SoPlex header files are located. This is only |
| 143 | 141 |
useful when the SoPlex headers and libraries are not under the same |
| 144 | 142 |
prefix (which is unlikely). |
| 145 | 143 |
|
| 146 | 144 |
--with-soplex-libdir=DIR |
| 147 | 145 |
|
| 148 | 146 |
The directory where the SoPlex libraries are located. This is only |
| 149 | 147 |
useful when the SoPlex headers and libraries are not under the same |
| 150 | 148 |
prefix (which is unlikely). |
| 151 | 149 |
|
| 152 | 150 |
--without-soplex |
| 153 | 151 |
|
| 154 | 152 |
Disable SoPlex support. |
| 153 |
|
|
| 154 |
--with-coin[=PREFIX] |
|
| 155 |
|
|
| 156 |
Enable support for COIN-OR solvers (CLP and CBC). You should |
|
| 157 |
specify the prefix too. (by default, COIN-OR tools install |
|
| 158 |
themselves to the source code directory). This command enables the |
|
| 159 |
solvers that are actually found. |
|
| 160 |
|
|
| 161 |
--with-coin-includedir=DIR |
|
| 162 |
|
|
| 163 |
The directory where the COIN-OR header files are located. This is |
|
| 164 |
only useful when the COIN-OR headers and libraries are not under |
|
| 165 |
the same prefix (which is unlikely). |
|
| 166 |
|
|
| 167 |
--with-coin-libdir=DIR |
|
| 168 |
|
|
| 169 |
The directory where the COIN-OR libraries are located. This is only |
|
| 170 |
useful when the COIN-OR headers and libraries are not under the |
|
| 171 |
same prefix (which is unlikely). |
|
| 172 |
|
|
| 173 |
--without-coin |
|
| 174 |
|
|
| 175 |
Disable COIN-OR support. |
| 1 |
LEMON code without an explicit copyright is covered by the following |
|
| 1 |
LEMON code without an explicit copyright notice is covered by the following |
|
| 2 | 2 |
copyright/license. |
| 3 | 3 |
|
| 4 | 4 |
Copyright (C) 2003-2009 Egervary Jeno Kombinatorikus Optimalizalasi |
| 5 | 5 |
Kutatocsoport (Egervary Combinatorial Optimization Research Group, |
| 6 | 6 |
EGRES). |
| 7 | 7 |
|
| 8 |
=========================================================================== |
|
| 9 |
Boost Software License, Version 1.0 |
|
| 10 |
=========================================================================== |
|
| 11 |
|
|
| 8 | 12 |
Permission is hereby granted, free of charge, to any person or organization |
| 9 | 13 |
obtaining a copy of the software and accompanying documentation covered by |
| 10 | 14 |
this license (the "Software") to use, reproduce, display, distribute, |
| 11 | 15 |
execute, and transmit the Software, and to prepare derivative works of the |
| 12 | 16 |
Software, and to permit third-parties to whom the Software is furnished to |
| 13 | 17 |
do so, all subject to the following: |
| 14 | 18 |
|
| 15 | 19 |
The copyright notices in the Software and this entire statement, including |
| 16 | 20 |
the above license grant, this restriction and the following disclaimer, |
| 17 | 21 |
must be included in all copies of the Software, in whole or in part, and |
| 18 | 22 |
all derivative works of the Software, unless such copies or derivative |
| 19 | 23 |
works are solely in the form of machine-executable object code generated by |
| 20 | 24 |
a source language processor. |
| 21 | 25 |
|
| 22 | 26 |
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 23 | 27 |
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 24 | 28 |
FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
| 25 | 29 |
SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
| 26 | 30 |
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
| 27 | 31 |
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 28 | 32 |
DEALINGS IN THE SOFTWARE. |
| 29 |
|
|
| 30 |
=========================================================================== |
|
| 31 |
This license is a verbatim copy of the Boost Software License, Version 1.0. |
|
| 32 |
|
|
| 33 |
| 1 | 1 |
ACLOCAL_AMFLAGS = -I m4 |
| 2 | 2 |
|
| 3 | 3 |
AM_CXXFLAGS = $(WARNINGCXXFLAGS) |
| 4 | 4 |
|
| 5 | 5 |
AM_CPPFLAGS = -I$(top_srcdir) -I$(top_builddir) |
| 6 | 6 |
LDADD = $(top_builddir)/lemon/libemon.la |
| 7 | 7 |
|
| 8 | 8 |
EXTRA_DIST = \ |
| 9 | 9 |
AUTHORS \ |
| 10 | 10 |
LICENSE \ |
| 11 | 11 |
m4/lx_check_cplex.m4 \ |
| 12 | 12 |
m4/lx_check_glpk.m4 \ |
| 13 | 13 |
m4/lx_check_soplex.m4 \ |
| 14 |
m4/lx_check_coin.m4 \ |
|
| 14 | 15 |
CMakeLists.txt \ |
| 15 |
cmake |
|
| 16 |
cmake/FindGhostscript.cmake \ |
|
| 17 |
cmake/FindCPLEX.cmake \ |
|
| 18 |
cmake/FindGLPK.cmake \ |
|
| 19 |
cmake/FindCOIN.cmake \ |
|
| 20 |
cmake/LEMONConfig.cmake.in \ |
|
| 21 |
cmake/version.cmake.in \ |
|
| 22 |
cmake/version.cmake \ |
|
| 23 |
cmake/nsis/lemon.ico \ |
|
| 24 |
cmake/nsis/uninstall.ico |
|
| 16 | 25 |
|
| 17 | 26 |
pkgconfigdir = $(libdir)/pkgconfig |
| 18 | 27 |
lemondir = $(pkgincludedir) |
| 19 | 28 |
bitsdir = $(lemondir)/bits |
| 20 | 29 |
conceptdir = $(lemondir)/concepts |
| 21 | 30 |
pkgconfig_DATA = |
| 22 | 31 |
lib_LTLIBRARIES = |
| 23 | 32 |
lemon_HEADERS = |
| 24 | 33 |
bits_HEADERS = |
| 25 | 34 |
concept_HEADERS = |
| 26 | 35 |
noinst_HEADERS = |
| 27 | 36 |
noinst_PROGRAMS = |
| 28 | 37 |
bin_PROGRAMS = |
| 29 | 38 |
check_PROGRAMS = |
| 30 | 39 |
dist_bin_SCRIPTS = |
| 31 | 40 |
TESTS = |
| 32 | 41 |
XFAIL_TESTS = |
| 33 | 42 |
|
| 34 | 43 |
include lemon/Makefile.am |
| 35 | 44 |
include test/Makefile.am |
| 36 | 45 |
include doc/Makefile.am |
| 37 |
include demo/Makefile.am |
|
| 38 | 46 |
include tools/Makefile.am |
| 39 | 47 |
|
| 48 |
DIST_SUBDIRS = demo |
|
| 49 |
|
|
| 50 |
demo: |
|
| 51 |
$(MAKE) $(AM_MAKEFLAGS) -C demo |
|
| 52 |
|
|
| 40 | 53 |
MRPROPERFILES = \ |
| 41 | 54 |
aclocal.m4 \ |
| 42 | 55 |
config.h.in \ |
| 43 | 56 |
config.h.in~ \ |
| 44 | 57 |
configure \ |
| 45 | 58 |
Makefile.in \ |
| 46 | 59 |
build-aux/config.guess \ |
| 47 | 60 |
build-aux/config.sub \ |
| 48 | 61 |
build-aux/depcomp \ |
| 49 | 62 |
build-aux/install-sh \ |
| 50 | 63 |
build-aux/ltmain.sh \ |
| 51 | 64 |
build-aux/missing \ |
| 52 | 65 |
doc/doxygen.log |
| 53 | 66 |
|
| 54 | 67 |
mrproper: |
| 55 | 68 |
$(MAKE) $(AM_MAKEFLAGS) maintainer-clean |
| 56 | 69 |
-rm -f $(MRPROPERFILES) |
| 57 | 70 |
|
| 58 | 71 |
dist-bz2: dist |
| 59 | 72 |
zcat $(PACKAGE)-$(VERSION).tar.gz | \ |
| 60 | 73 |
bzip2 --best -c > $(PACKAGE)-$(VERSION).tar.bz2 |
| 61 | 74 |
|
| 62 | 75 |
distcheck-bz2: distcheck |
| 63 | 76 |
zcat $(PACKAGE)-$(VERSION).tar.gz | \ |
| 64 | 77 |
bzip2 --best -c > $(PACKAGE)-$(VERSION).tar.bz2 |
| 65 | 78 |
|
| 66 |
.PHONY: mrproper dist-bz2 distcheck-bz2 |
|
| 79 |
.PHONY: demo mrproper dist-bz2 distcheck-bz2 |
| 1 |
2009-05-13 Version 1.1 released |
|
| 2 |
|
|
| 3 |
This is the second stable release of the 1.x series. It |
|
| 4 |
features a better coverage of the tools available in the 0.x |
|
| 5 |
series, a thoroughly reworked LP/MIP interface plus various |
|
| 6 |
improvements in the existing tools. |
|
| 7 |
|
|
| 8 |
* Much improved M$ Windows support |
|
| 9 |
* Various improvements in the CMAKE build system |
|
| 10 |
* Compilation warnings are fixed/suppressed |
|
| 11 |
* Support IBM xlC compiler |
|
| 12 |
* New algorithms |
|
| 13 |
* Connectivity related algorithms (#61) |
|
| 14 |
* Euler walks (#65) |
|
| 15 |
* Preflow push-relabel max. flow algorithm (#176) |
|
| 16 |
* Circulation algorithm (push-relabel based) (#175) |
|
| 17 |
* Suurballe algorithm (#47) |
|
| 18 |
* Gomory-Hu algorithm (#66) |
|
| 19 |
* Hao-Orlin algorithm (#58) |
|
| 20 |
* Edmond's maximum cardinality and weighted matching algorithms |
|
| 21 |
in general graphs (#48,#265) |
|
| 22 |
* Minimum cost arborescence/branching (#60) |
|
| 23 |
* Network Simplex min. cost flow algorithm (#234) |
|
| 24 |
* New data structures |
|
| 25 |
* Full graph structure (#57) |
|
| 26 |
* Grid graph structure (#57) |
|
| 27 |
* Hypercube graph structure (#57) |
|
| 28 |
* Graph adaptors (#67) |
|
| 29 |
* ArcSet and EdgeSet classes (#67) |
|
| 30 |
* Elevator class (#174) |
|
| 31 |
* Other new tools |
|
| 32 |
* LP/MIP interface (#44) |
|
| 33 |
* Support for GLPK, CPLEX, Soplex, COIN-OR CLP and CBC |
|
| 34 |
* Reader for the Nauty file format (#55) |
|
| 35 |
* DIMACS readers (#167) |
|
| 36 |
* Radix sort algorithms (#72) |
|
| 37 |
* RangeIdMap and CrossRefMap (#160) |
|
| 38 |
* New command line tools |
|
| 39 |
* DIMACS to LGF converter (#182) |
|
| 40 |
* lgf-gen - a graph generator (#45) |
|
| 41 |
* DIMACS solver utility (#226) |
|
| 42 |
* Other code improvements |
|
| 43 |
* Lognormal distribution added to Random (#102) |
|
| 44 |
* Better (i.e. O(1) time) item counting in SmartGraph (#3) |
|
| 45 |
* The standard maps of graphs are guaranteed to be |
|
| 46 |
reference maps (#190) |
|
| 47 |
* Miscellaneous |
|
| 48 |
* Various doc improvements |
|
| 49 |
* Improved 0.x -> 1.x converter script |
|
| 50 |
|
|
| 51 |
* Several bugfixes (compared to release 1.0): |
|
| 52 |
#170: Bugfix SmartDigraph::split() |
|
| 53 |
#171: Bugfix in SmartGraph::restoreSnapshot() |
|
| 54 |
#172: Extended test cases for graphs and digraphs |
|
| 55 |
#173: Bugfix in Random |
|
| 56 |
* operator()s always return a double now |
|
| 57 |
* the faulty real<Num>(Num) and real<Num>(Num,Num) |
|
| 58 |
have been removed |
|
| 59 |
#187: Remove DijkstraWidestPathOperationTraits |
|
| 60 |
#61: Bugfix in DfsVisit |
|
| 61 |
#193: Bugfix in GraphReader::skipSection() |
|
| 62 |
#195: Bugfix in ConEdgeIt() |
|
| 63 |
#197: Bugfix in heap unionfind |
|
| 64 |
* This bug affects Edmond's general matching algorithms |
|
| 65 |
#207: Fix 'make install' without 'make html' using CMAKE |
|
| 66 |
#208: Suppress or fix VS2008 compilation warnings |
|
| 67 |
----: Update the LEMON icon |
|
| 68 |
----: Enable the component-based installer |
|
| 69 |
(in installers made by CPACK) |
|
| 70 |
----: Set the proper version for CMAKE in the tarballs |
|
| 71 |
(made by autotools) |
|
| 72 |
----: Minor clarification in the LICENSE file |
|
| 73 |
----: Add missing unistd.h include to time_measure.h |
|
| 74 |
#204: Compilation bug fixed in graph_to_eps.h with VS2005 |
|
| 75 |
#214,#215: windows.h should never be included by lemon headers |
|
| 76 |
#230: Build systems check the availability of 'long long' type |
|
| 77 |
#229: Default implementation of Tolerance<> is used for integer types |
|
| 78 |
#211,#212: Various fixes for compiling on AIX |
|
| 79 |
----: Improvements in CMAKE config |
|
| 80 |
- docs is installed in share/doc/ |
|
| 81 |
- detects newer versions of Ghostscript |
|
| 82 |
#239: Fix missing 'inline' specifier in time_measure.h |
|
| 83 |
#274,#280: Install lemon/config.h |
|
| 84 |
#275: Prefix macro names with LEMON_ in lemon/config.h |
|
| 85 |
----: Small script for making the release tarballs added |
|
| 86 |
----: Minor improvement in unify-sources.sh (a76f55d7d397) |
|
| 87 |
|
|
| 88 |
2009-03-27 LEMON joins to the COIN-OR initiative |
|
| 89 |
|
|
| 90 |
COIN-OR (Computational Infrastructure for Operations Research, |
|
| 91 |
http://www.coin-or.org) project is an initiative to spur the |
|
| 92 |
development of open-source software for the operations research |
|
| 93 |
community. |
|
| 94 |
|
|
| 1 | 95 |
2008-10-13 Version 1.0 released |
| 2 | 96 |
|
| 3 | 97 |
This is the first stable release of LEMON. Compared to the 0.x |
| 4 | 98 |
release series, it features a considerably smaller but more |
| 5 | 99 |
matured set of tools. The API has also completely revised and |
| 6 | 100 |
changed in several places. |
| 7 | 101 |
|
| 8 | 102 |
* The major name changes compared to the 0.x series (see the |
| 9 | 103 |
Migration Guide in the doc for more details) |
| 10 | 104 |
* Graph -> Digraph, UGraph -> Graph |
| 11 | 105 |
* Edge -> Arc, UEdge -> Edge |
| 12 | 106 |
* source(UEdge)/target(UEdge) -> u(Edge)/v(Edge) |
| 13 | 107 |
* Other improvements |
| 14 | 108 |
* Better documentation |
| 15 | 109 |
* Reviewed and cleaned up codebase |
| 16 | 110 |
* CMake based build system (along with the autotools based one) |
| 17 | 111 |
* Contents of the library (ported from 0.x) |
| 18 | 112 |
* Algorithms |
| 19 | 113 |
* breadth-first search (bfs.h) |
| 20 | 114 |
* depth-first search (dfs.h) |
| 21 | 115 |
* Dijkstra's algorithm (dijkstra.h) |
| 22 | 116 |
* Kruskal's algorithm (kruskal.h) |
| 23 | 117 |
* Data structures |
| 24 | 118 |
* graph data structures (list_graph.h, smart_graph.h) |
| 25 | 119 |
* path data structures (path.h) |
| 26 | 120 |
* binary heap data structure (bin_heap.h) |
| 27 | 121 |
* union-find data structures (unionfind.h) |
| 28 | 122 |
* miscellaneous property maps (maps.h) |
| 29 | 123 |
* two dimensional vector and bounding box (dim2.h) |
| 30 | 124 |
* Concepts |
| 31 | 125 |
* graph structure concepts (concepts/digraph.h, concepts/graph.h, |
| 32 | 126 |
concepts/graph_components.h) |
| 33 | 127 |
* concepts for other structures (concepts/heap.h, concepts/maps.h, |
| 34 | 128 |
concepts/path.h) |
| 35 | 129 |
* Tools |
| 36 | 130 |
* Mersenne twister random number generator (random.h) |
| 37 | 131 |
* tools for measuring cpu and wall clock time (time_measure.h) |
| 38 | 132 |
* tools for counting steps and events (counter.h) |
| 39 | 133 |
* tool for parsing command line arguments (arg_parser.h) |
| 40 | 134 |
* tool for visualizing graphs (graph_to_eps.h) |
| 41 | 135 |
* tools for reading and writing data in LEMON Graph Format |
| 42 | 136 |
(lgf_reader.h, lgf_writer.h) |
| 43 | 137 |
* tools to handle the anomalies of calculations with |
| 44 | 138 |
floating point numbers (tolerance.h) |
| 45 | 139 |
* tools to manage RGB colors (color.h) |
| 46 | 140 |
* Infrastructure |
| 47 | 141 |
* extended assertion handling (assert.h) |
| 48 | 142 |
* exception classes and error handling (error.h) |
| 49 | 143 |
* concept checking (concept_check.h) |
| 50 | 144 |
* commonly used mathematical constants (math.h) |
| 1 |
================================================================== |
|
| 2 |
LEMON - a Library of Efficient Models and Optimization in Networks |
|
| 3 |
================================================================== |
|
| 1 |
===================================================================== |
|
| 2 |
LEMON - a Library for Efficient Modeling and Optimization in Networks |
|
| 3 |
===================================================================== |
|
| 4 | 4 |
|
| 5 | 5 |
LEMON is an open source library written in C++. It provides |
| 6 | 6 |
easy-to-use implementations of common data structures and algorithms |
| 7 | 7 |
in the area of optimization and helps implementing new ones. The main |
| 8 | 8 |
focus is on graphs and graph algorithms, thus it is especially |
| 9 | 9 |
suitable for solving design and optimization problems of |
| 10 | 10 |
telecommunication networks. To achieve wide usability its data |
| 11 | 11 |
structures and algorithms provide generic interfaces. |
| 12 | 12 |
|
| 13 | 13 |
Contents |
| 14 | 14 |
======== |
| 15 | 15 |
|
| 16 | 16 |
LICENSE |
| 17 | 17 |
|
| 18 | 18 |
Copying, distribution and modification conditions and terms. |
| 19 | 19 |
|
| 20 | 20 |
INSTALL |
| 21 | 21 |
|
| 22 | 22 |
General building and installation instructions. |
| 23 | 23 |
|
| 24 | 24 |
lemon/ |
| 25 | 25 |
|
| 26 | 26 |
Source code of LEMON library. |
| 27 | 27 |
|
| 28 | 28 |
doc/ |
| 29 | 29 |
|
| 30 | 30 |
Documentation of LEMON. The starting page is doc/html/index.html. |
| 31 | 31 |
|
| 32 | 32 |
demo/ |
| 33 | 33 |
|
| 34 | 34 |
Some example programs to make you easier to get familiar with LEMON. |
| 35 | 35 |
|
| 36 | 36 |
test/ |
| 37 | 37 |
|
| 38 | 38 |
Programs to check the integrity and correctness of LEMON. |
| 39 | 39 |
|
| 40 | 40 |
tools/ |
| 41 | 41 |
|
| 42 | 42 |
Various utilities related to LEMON. |
| 1 | 1 |
INCLUDE(FindPackageHandleStandardArgs) |
| 2 | 2 |
|
| 3 | 3 |
FIND_PROGRAM(GHOSTSCRIPT_EXECUTABLE |
| 4 | 4 |
NAMES gs gswin32c |
| 5 | 5 |
PATHS "$ENV{ProgramFiles}/gs"
|
| 6 |
PATH_SUFFIXES gs8.61/bin gs8.62/bin |
|
| 6 |
PATH_SUFFIXES gs8.61/bin gs8.62/bin gs8.63/bin gs8.64/bin gs8.65/bin |
|
| 7 | 7 |
DOC "Ghostscript: PostScript and PDF language interpreter and previewer." |
| 8 | 8 |
) |
| 9 | 9 |
|
| 10 | 10 |
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Ghostscript DEFAULT_MSG GHOSTSCRIPT_EXECUTABLE) |
| 1 | 1 |
dnl Process this file with autoconf to produce a configure script. |
| 2 | 2 |
|
| 3 | 3 |
dnl Version information. |
| 4 | 4 |
m4_define([lemon_version_number], |
| 5 |
|
|
| 5 |
[m4_normalize(esyscmd([echo ${LEMON_VERSION}]))])
|
|
| 6 | 6 |
dnl m4_define([lemon_version_number], []) |
| 7 | 7 |
m4_define([lemon_hg_path], [m4_normalize(esyscmd([./scripts/chg-len.py]))]) |
| 8 |
m4_define([lemon_hg_revision], [m4_normalize(esyscmd([hg id -i]))]) |
|
| 8 |
m4_define([lemon_hg_revision], [m4_normalize(esyscmd([hg id -i 2> /dev/null]))]) |
|
| 9 | 9 |
m4_define([lemon_version], [ifelse(lemon_version_number(), |
| 10 |
[], |
|
| 11 |
[lemon_hg_path().lemon_hg_revision()], |
|
| 12 |
|
|
| 10 |
[], |
|
| 11 |
[ifelse(lemon_hg_revision(), |
|
| 12 |
[], |
|
| 13 |
[hg-tip], |
|
| 14 |
[lemon_hg_path().lemon_hg_revision()])], |
|
| 15 |
[lemon_version_number()])]) |
|
| 13 | 16 |
|
| 14 | 17 |
AC_PREREQ([2.59]) |
| 15 | 18 |
AC_INIT([LEMON], [lemon_version()], [lemon-user@lemon.cs.elte.hu], [lemon]) |
| 16 | 19 |
AC_CONFIG_AUX_DIR([build-aux]) |
| 17 | 20 |
AC_CONFIG_MACRO_DIR([m4]) |
| 18 | 21 |
AM_INIT_AUTOMAKE([-Wall -Werror foreign subdir-objects nostdinc]) |
| 19 | 22 |
AC_CONFIG_SRCDIR([lemon/list_graph.h]) |
| 20 | 23 |
AC_CONFIG_HEADERS([config.h lemon/config.h]) |
| 21 | 24 |
|
| 25 |
AC_DEFINE([LEMON_VERSION], [lemon_version()], [The version string]) |
|
| 26 |
|
|
| 22 | 27 |
dnl Do compilation tests using the C++ compiler. |
| 23 | 28 |
AC_LANG([C++]) |
| 24 | 29 |
|
| 30 |
dnl Check the existence of long long type. |
|
| 31 |
AC_CHECK_TYPE(long long, [long_long_found=yes], [long_long_found=no]) |
|
| 32 |
if test x"$long_long_found" = x"yes"; then |
|
| 33 |
AC_DEFINE([LEMON_HAVE_LONG_LONG], [1], [Define to 1 if you have long long.]) |
|
| 34 |
fi |
|
| 35 |
|
|
| 25 | 36 |
dnl Checks for programs. |
| 26 | 37 |
AC_PROG_CXX |
| 27 | 38 |
AC_PROG_CXXCPP |
| 28 | 39 |
AC_PROG_INSTALL |
| 29 | 40 |
AC_DISABLE_SHARED |
| 30 | 41 |
AC_PROG_LIBTOOL |
| 31 | 42 |
|
| 32 | 43 |
AC_CHECK_PROG([doxygen_found],[doxygen],[yes],[no]) |
| 44 |
AC_CHECK_PROG([python_found],[python],[yes],[no]) |
|
| 33 | 45 |
AC_CHECK_PROG([gs_found],[gs],[yes],[no]) |
| 34 | 46 |
|
| 35 | 47 |
dnl Detect Intel compiler. |
| 36 | 48 |
AC_MSG_CHECKING([whether we are using the Intel C++ compiler]) |
| 37 | 49 |
AC_COMPILE_IFELSE([#ifndef __INTEL_COMPILER |
| 38 | 50 |
choke me |
| 39 | 51 |
#endif], [ICC=[yes]], [ICC=[no]]) |
| 40 | 52 |
if test x"$ICC" = x"yes"; then |
| 41 | 53 |
AC_MSG_RESULT([yes]) |
| 42 | 54 |
else |
| 43 | 55 |
AC_MSG_RESULT([no]) |
| 44 | 56 |
fi |
| 45 | 57 |
|
| 46 | 58 |
dnl Set custom compiler flags when using g++. |
| 47 | 59 |
if test "$GXX" = yes -a "$ICC" = no; then |
| 48 | 60 |
WARNINGCXXFLAGS="-Wall -W -Wall -W -Wunused -Wformat=2 -Wctor-dtor-privacy -Wnon-virtual-dtor -Wno-char-subscripts -Wwrite-strings -Wno-char-subscripts -Wreturn-type -Wcast-qual -Wcast-align -Wsign-promo -Woverloaded-virtual -ansi -fno-strict-aliasing -Wold-style-cast -Wno-unknown-pragmas" |
| 49 | 61 |
fi |
| 50 | 62 |
AC_SUBST([WARNINGCXXFLAGS]) |
| 51 | 63 |
|
| 52 | 64 |
dnl Checks for libraries. |
| 53 | 65 |
LX_CHECK_GLPK |
| 54 | 66 |
LX_CHECK_CPLEX |
| 55 | 67 |
LX_CHECK_SOPLEX |
| 56 |
|
|
| 68 |
LX_CHECK_COIN |
|
| 57 | 69 |
|
| 58 | 70 |
AM_CONDITIONAL([HAVE_LP], [test x"$lx_lp_found" = x"yes"]) |
| 59 | 71 |
AM_CONDITIONAL([HAVE_MIP], [test x"$lx_mip_found" = x"yes"]) |
| 60 | 72 |
|
| 61 |
dnl Disable/enable building the demo programs. |
|
| 62 |
AC_ARG_ENABLE([demo], |
|
| 63 |
AS_HELP_STRING([--enable-demo], [build the demo programs]) |
|
| 64 |
AS_HELP_STRING([--disable-demo], [do not build the demo programs @<:@default@:>@]), |
|
| 65 |
[], [enable_demo=no]) |
|
| 66 |
AC_MSG_CHECKING([whether to build the demo programs]) |
|
| 67 |
if test x"$enable_demo" != x"no"; then |
|
| 68 |
AC_MSG_RESULT([yes]) |
|
| 69 |
else |
|
| 70 |
AC_MSG_RESULT([no]) |
|
| 71 |
fi |
|
| 72 |
AM_CONDITIONAL([WANT_DEMO], [test x"$enable_demo" != x"no"]) |
|
| 73 |
|
|
| 74 | 73 |
dnl Disable/enable building the binary tools. |
| 75 | 74 |
AC_ARG_ENABLE([tools], |
| 76 | 75 |
AS_HELP_STRING([--enable-tools], [build additional tools @<:@default@:>@]) |
| 77 | 76 |
AS_HELP_STRING([--disable-tools], [do not build additional tools]), |
| 78 | 77 |
[], [enable_tools=yes]) |
| 79 | 78 |
AC_MSG_CHECKING([whether to build the additional tools]) |
| 80 | 79 |
if test x"$enable_tools" != x"no"; then |
| 81 | 80 |
AC_MSG_RESULT([yes]) |
| 82 | 81 |
else |
| 83 | 82 |
AC_MSG_RESULT([no]) |
| 84 | 83 |
fi |
| 85 | 84 |
AM_CONDITIONAL([WANT_TOOLS], [test x"$enable_tools" != x"no"]) |
| 86 | 85 |
|
| 87 | 86 |
dnl Checks for header files. |
| 88 | 87 |
AC_CHECK_HEADERS(limits.h sys/time.h sys/times.h unistd.h) |
| 89 | 88 |
|
| 90 | 89 |
dnl Checks for typedefs, structures, and compiler characteristics. |
| 91 | 90 |
AC_C_CONST |
| 92 | 91 |
AC_C_INLINE |
| 93 | 92 |
AC_TYPE_SIZE_T |
| 94 | 93 |
AC_HEADER_TIME |
| 95 | 94 |
AC_STRUCT_TM |
| 96 | 95 |
|
| 97 | 96 |
dnl Checks for library functions. |
| 98 | 97 |
AC_HEADER_STDC |
| 99 | 98 |
AC_CHECK_FUNCS(gettimeofday times ctime_r) |
| 100 | 99 |
|
| 101 | 100 |
dnl Add dependencies on files generated by configure. |
| 102 | 101 |
AC_SUBST([CONFIG_STATUS_DEPENDENCIES], |
| 103 |
['$(top_srcdir)/doc/Doxyfile.in $(top_srcdir)/lemon/lemon.pc.in']) |
|
| 102 |
['$(top_srcdir)/doc/Doxyfile.in $(top_srcdir)/lemon/lemon.pc.in $(top_srcdir)/cmake/version.cmake.in']) |
|
| 104 | 103 |
|
| 105 | 104 |
AC_CONFIG_FILES([ |
| 106 | 105 |
Makefile |
| 106 |
demo/Makefile |
|
| 107 |
cmake/version.cmake |
|
| 107 | 108 |
doc/Doxyfile |
| 108 | 109 |
lemon/lemon.pc |
| 109 | 110 |
]) |
| 110 | 111 |
|
| 111 | 112 |
AC_OUTPUT |
| 112 | 113 |
|
| 113 | 114 |
echo |
| 114 | 115 |
echo '****************************** SUMMARY ******************************' |
| 115 | 116 |
echo |
| 116 | 117 |
echo Package version............... : $PACKAGE-$VERSION |
| 117 | 118 |
echo |
| 118 | 119 |
echo C++ compiler.................. : $CXX |
| 119 | 120 |
echo C++ compiles flags............ : $WARNINGCXXFLAGS $CXXFLAGS |
| 120 | 121 |
echo |
| 122 |
echo Compiler supports long long... : $long_long_found |
|
| 123 |
echo |
|
| 121 | 124 |
echo GLPK support.................. : $lx_glpk_found |
| 122 | 125 |
echo CPLEX support................. : $lx_cplex_found |
| 123 | 126 |
echo SOPLEX support................ : $lx_soplex_found |
| 124 | 127 |
echo CLP support................... : $lx_clp_found |
| 128 |
echo CBC support................... : $lx_cbc_found |
|
| 125 | 129 |
echo |
| 126 |
echo Build demo programs........... : $enable_demo |
|
| 127 | 130 |
echo Build additional tools........ : $enable_tools |
| 128 | 131 |
echo |
| 129 | 132 |
echo The packace will be installed in |
| 130 | 133 |
echo -n ' ' |
| 131 | 134 |
echo $prefix. |
| 132 | 135 |
echo |
| 133 | 136 |
echo '*********************************************************************' |
| 134 | 137 |
|
| 135 | 138 |
echo |
| 136 | 139 |
echo Configure complete, now type \'make\' and then \'make install\'. |
| 137 | 140 |
echo |
| 1 |
INCLUDE_DIRECTORIES( |
|
| 1 |
INCLUDE_DIRECTORIES( |
|
| 2 |
${PROJECT_SOURCE_DIR}
|
|
| 3 |
${PROJECT_BINARY_DIR}
|
|
| 4 |
) |
|
| 2 | 5 |
|
| 3 |
LINK_DIRECTORIES( |
|
| 6 |
LINK_DIRECTORIES( |
|
| 7 |
${PROJECT_BINARY_DIR}/lemon
|
|
| 8 |
) |
|
| 4 | 9 |
|
| 5 | 10 |
SET(DEMOS |
| 6 | 11 |
arg_parser_demo |
| 7 | 12 |
graph_to_eps_demo |
| 8 |
lgf_demo |
|
| 13 |
lgf_demo |
|
| 14 |
) |
|
| 9 | 15 |
|
| 10 | 16 |
FOREACH(DEMO_NAME ${DEMOS})
|
| 11 | 17 |
ADD_EXECUTABLE(${DEMO_NAME} ${DEMO_NAME}.cc)
|
| 12 | 18 |
TARGET_LINK_LIBRARIES(${DEMO_NAME} lemon)
|
| 13 |
ENDFOREACH( |
|
| 19 |
ENDFOREACH() |
| 1 |
EXTRA_DIST += \ |
|
| 2 |
demo/CMakeLists.txt \ |
|
| 3 |
|
|
| 1 |
AM_CXXFLAGS = $(WARNINGCXXFLAGS) |
|
| 4 | 2 |
|
| 5 |
|
|
| 3 |
AM_CPPFLAGS = -I$(top_srcdir) -I$(top_builddir) |
|
| 4 |
LDADD = $(top_builddir)/lemon/libemon.la |
|
| 6 | 5 |
|
| 7 |
noinst_PROGRAMS += \ |
|
| 8 |
demo/arg_parser_demo \ |
|
| 9 |
demo/graph_to_eps_demo \ |
|
| 10 |
demo/lgf_demo |
|
| 6 |
EXTRA_DIST = \ |
|
| 7 |
CMakeLists.txt \ |
|
| 8 |
digraph.lgf |
|
| 11 | 9 |
|
| 12 |
|
|
| 10 |
noinst_PROGRAMS = \ |
|
| 11 |
arg_parser_demo \ |
|
| 12 |
graph_to_eps_demo \ |
|
| 13 |
lgf_demo |
|
| 13 | 14 |
|
| 14 |
demo_arg_parser_demo_SOURCES = demo/arg_parser_demo.cc |
|
| 15 |
demo_graph_to_eps_demo_SOURCES = demo/graph_to_eps_demo.cc |
|
| 16 |
|
|
| 15 |
arg_parser_demo_SOURCES = arg_parser_demo.cc |
|
| 16 |
graph_to_eps_demo_SOURCES = graph_to_eps_demo.cc |
|
| 17 |
lgf_demo_SOURCES = lgf_demo.cc |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
/// \ingroup demos |
| 20 | 20 |
/// \file |
| 21 | 21 |
/// \brief Demo of the graph drawing function \ref graphToEps() |
| 22 | 22 |
/// |
| 23 | 23 |
/// This demo program shows examples how to use the function \ref |
| 24 | 24 |
/// graphToEps(). It takes no input but simply creates seven |
| 25 | 25 |
/// <tt>.eps</tt> files demonstrating the capability of \ref |
| 26 | 26 |
/// graphToEps(), and showing how to draw directed graphs, |
| 27 | 27 |
/// how to handle parallel egdes, how to change the properties (like |
| 28 | 28 |
/// color, shape, size, title etc.) of nodes and arcs individually |
| 29 | 29 |
/// using appropriate graph maps. |
| 30 | 30 |
/// |
| 31 | 31 |
/// \include graph_to_eps_demo.cc |
| 32 | 32 |
|
| 33 | 33 |
#include<lemon/list_graph.h> |
| 34 | 34 |
#include<lemon/graph_to_eps.h> |
| 35 | 35 |
#include<lemon/math.h> |
| 36 | 36 |
|
| 37 | 37 |
using namespace std; |
| 38 | 38 |
using namespace lemon; |
| 39 | 39 |
|
| 40 | 40 |
int main() |
| 41 | 41 |
{
|
| 42 | 42 |
Palette palette; |
| 43 | 43 |
Palette paletteW(true); |
| 44 | 44 |
|
| 45 | 45 |
// Create a small digraph |
| 46 | 46 |
ListDigraph g; |
| 47 | 47 |
typedef ListDigraph::Node Node; |
| 48 | 48 |
typedef ListDigraph::NodeIt NodeIt; |
| 49 | 49 |
typedef ListDigraph::Arc Arc; |
| 50 | 50 |
typedef dim2::Point<int> Point; |
| 51 | 51 |
|
| 52 | 52 |
Node n1=g.addNode(); |
| 53 | 53 |
Node n2=g.addNode(); |
| 54 | 54 |
Node n3=g.addNode(); |
| 55 | 55 |
Node n4=g.addNode(); |
| 56 | 56 |
Node n5=g.addNode(); |
| 57 | 57 |
|
| 58 | 58 |
ListDigraph::NodeMap<Point> coords(g); |
| 59 | 59 |
ListDigraph::NodeMap<double> sizes(g); |
| 60 | 60 |
ListDigraph::NodeMap<int> colors(g); |
| 61 | 61 |
ListDigraph::NodeMap<int> shapes(g); |
| 62 | 62 |
ListDigraph::ArcMap<int> acolors(g); |
| 63 | 63 |
ListDigraph::ArcMap<int> widths(g); |
| 64 | 64 |
|
| 65 | 65 |
coords[n1]=Point(50,50); sizes[n1]=1; colors[n1]=1; shapes[n1]=0; |
| 66 | 66 |
coords[n2]=Point(50,70); sizes[n2]=2; colors[n2]=2; shapes[n2]=2; |
| 67 | 67 |
coords[n3]=Point(70,70); sizes[n3]=1; colors[n3]=3; shapes[n3]=0; |
| 68 | 68 |
coords[n4]=Point(70,50); sizes[n4]=2; colors[n4]=4; shapes[n4]=1; |
| 69 | 69 |
coords[n5]=Point(85,60); sizes[n5]=3; colors[n5]=5; shapes[n5]=2; |
| 70 | 70 |
|
| 71 | 71 |
Arc a; |
| 72 | 72 |
|
| 73 | 73 |
a=g.addArc(n1,n2); acolors[a]=0; widths[a]=1; |
| 74 | 74 |
a=g.addArc(n2,n3); acolors[a]=0; widths[a]=1; |
| 75 | 75 |
a=g.addArc(n3,n5); acolors[a]=0; widths[a]=3; |
| 76 | 76 |
a=g.addArc(n5,n4); acolors[a]=0; widths[a]=1; |
| 77 | 77 |
a=g.addArc(n4,n1); acolors[a]=0; widths[a]=1; |
| 78 | 78 |
a=g.addArc(n2,n4); acolors[a]=1; widths[a]=2; |
| 79 | 79 |
a=g.addArc(n3,n4); acolors[a]=2; widths[a]=1; |
| 80 | 80 |
|
| 81 | 81 |
IdMap<ListDigraph,Node> id(g); |
| 82 | 82 |
|
| 83 | 83 |
// Create .eps files showing the digraph with different options |
| 84 | 84 |
cout << "Create 'graph_to_eps_demo_out_1_pure.eps'" << endl; |
| 85 | 85 |
graphToEps(g,"graph_to_eps_demo_out_1_pure.eps"). |
| 86 | 86 |
coords(coords). |
| 87 | 87 |
title("Sample .eps figure").
|
| 88 | 88 |
copyright("(C) 2003-2009 LEMON Project").
|
| 89 | 89 |
run(); |
| 90 | 90 |
|
| 91 | 91 |
cout << "Create 'graph_to_eps_demo_out_2.eps'" << endl; |
| 92 | 92 |
graphToEps(g,"graph_to_eps_demo_out_2.eps"). |
| 93 | 93 |
coords(coords). |
| 94 | 94 |
title("Sample .eps figure").
|
| 95 | 95 |
copyright("(C) 2003-2009 LEMON Project").
|
| 96 | 96 |
absoluteNodeSizes().absoluteArcWidths(). |
| 97 | 97 |
nodeScale(2).nodeSizes(sizes). |
| 98 | 98 |
nodeShapes(shapes). |
| 99 | 99 |
nodeColors(composeMap(palette,colors)). |
| 100 | 100 |
arcColors(composeMap(palette,acolors)). |
| 101 | 101 |
arcWidthScale(.4).arcWidths(widths). |
| 102 | 102 |
nodeTexts(id).nodeTextSize(3). |
| 103 | 103 |
run(); |
| 104 | 104 |
|
| 105 | 105 |
cout << "Create 'graph_to_eps_demo_out_3_arr.eps'" << endl; |
| 106 | 106 |
graphToEps(g,"graph_to_eps_demo_out_3_arr.eps"). |
| 107 | 107 |
title("Sample .eps figure (with arrowheads)").
|
| 108 | 108 |
copyright("(C) 2003-2009 LEMON Project").
|
| 109 | 109 |
absoluteNodeSizes().absoluteArcWidths(). |
| 110 | 110 |
nodeColors(composeMap(palette,colors)). |
| 111 | 111 |
coords(coords). |
| 112 | 112 |
nodeScale(2).nodeSizes(sizes). |
| 113 | 113 |
nodeShapes(shapes). |
| 114 | 114 |
arcColors(composeMap(palette,acolors)). |
| 115 | 115 |
arcWidthScale(.4).arcWidths(widths). |
| 116 | 116 |
nodeTexts(id).nodeTextSize(3). |
| 117 | 117 |
drawArrows().arrowWidth(2).arrowLength(2). |
| 118 | 118 |
run(); |
| 119 | 119 |
|
| 120 | 120 |
// Add more arcs to the digraph |
| 121 | 121 |
a=g.addArc(n1,n4); acolors[a]=2; widths[a]=1; |
| 122 | 122 |
a=g.addArc(n4,n1); acolors[a]=1; widths[a]=2; |
| 123 | 123 |
|
| 124 | 124 |
a=g.addArc(n1,n2); acolors[a]=1; widths[a]=1; |
| 125 | 125 |
a=g.addArc(n1,n2); acolors[a]=2; widths[a]=1; |
| 126 | 126 |
a=g.addArc(n1,n2); acolors[a]=3; widths[a]=1; |
| 127 | 127 |
a=g.addArc(n1,n2); acolors[a]=4; widths[a]=1; |
| 128 | 128 |
a=g.addArc(n1,n2); acolors[a]=5; widths[a]=1; |
| 129 | 129 |
a=g.addArc(n1,n2); acolors[a]=6; widths[a]=1; |
| 130 | 130 |
a=g.addArc(n1,n2); acolors[a]=7; widths[a]=1; |
| 131 | 131 |
|
| 132 | 132 |
cout << "Create 'graph_to_eps_demo_out_4_par.eps'" << endl; |
| 133 | 133 |
graphToEps(g,"graph_to_eps_demo_out_4_par.eps"). |
| 134 | 134 |
title("Sample .eps figure (parallel arcs)").
|
| 135 | 135 |
copyright("(C) 2003-2009 LEMON Project").
|
| 136 | 136 |
absoluteNodeSizes().absoluteArcWidths(). |
| 137 | 137 |
nodeShapes(shapes). |
| 138 | 138 |
coords(coords). |
| 139 | 139 |
nodeScale(2).nodeSizes(sizes). |
| 140 | 140 |
nodeColors(composeMap(palette,colors)). |
| 141 | 141 |
arcColors(composeMap(palette,acolors)). |
| 142 | 142 |
arcWidthScale(.4).arcWidths(widths). |
| 143 | 143 |
nodeTexts(id).nodeTextSize(3). |
| 144 | 144 |
enableParallel().parArcDist(1.5). |
| 145 | 145 |
run(); |
| 146 | 146 |
|
| 147 | 147 |
cout << "Create 'graph_to_eps_demo_out_5_par_arr.eps'" << endl; |
| 148 | 148 |
graphToEps(g,"graph_to_eps_demo_out_5_par_arr.eps"). |
| 149 | 149 |
title("Sample .eps figure (parallel arcs and arrowheads)").
|
| 150 | 150 |
copyright("(C) 2003-2009 LEMON Project").
|
| 151 | 151 |
absoluteNodeSizes().absoluteArcWidths(). |
| 152 | 152 |
nodeScale(2).nodeSizes(sizes). |
| 153 | 153 |
coords(coords). |
| 154 | 154 |
nodeShapes(shapes). |
| 155 | 155 |
nodeColors(composeMap(palette,colors)). |
| 156 | 156 |
arcColors(composeMap(palette,acolors)). |
| 157 | 157 |
arcWidthScale(.3).arcWidths(widths). |
| 158 | 158 |
nodeTexts(id).nodeTextSize(3). |
| 159 | 159 |
enableParallel().parArcDist(1). |
| 160 | 160 |
drawArrows().arrowWidth(1).arrowLength(1). |
| 161 | 161 |
run(); |
| 162 | 162 |
|
| 163 | 163 |
cout << "Create 'graph_to_eps_demo_out_6_par_arr_a4.eps'" << endl; |
| 164 | 164 |
graphToEps(g,"graph_to_eps_demo_out_6_par_arr_a4.eps"). |
| 165 | 165 |
title("Sample .eps figure (fits to A4)").
|
| 166 | 166 |
copyright("(C) 2003-2009 LEMON Project").
|
| 167 | 167 |
scaleToA4(). |
| 168 | 168 |
absoluteNodeSizes().absoluteArcWidths(). |
| 169 | 169 |
nodeScale(2).nodeSizes(sizes). |
| 170 | 170 |
coords(coords). |
| 171 | 171 |
nodeShapes(shapes). |
| 172 | 172 |
nodeColors(composeMap(palette,colors)). |
| 173 | 173 |
arcColors(composeMap(palette,acolors)). |
| 174 | 174 |
arcWidthScale(.3).arcWidths(widths). |
| 175 | 175 |
nodeTexts(id).nodeTextSize(3). |
| 176 | 176 |
enableParallel().parArcDist(1). |
| 177 | 177 |
drawArrows().arrowWidth(1).arrowLength(1). |
| 178 | 178 |
run(); |
| 179 | 179 |
|
| 180 | 180 |
// Create an .eps file showing the colors of a default Palette |
| 181 | 181 |
ListDigraph h; |
| 182 | 182 |
ListDigraph::NodeMap<int> hcolors(h); |
| 183 | 183 |
ListDigraph::NodeMap<Point> hcoords(h); |
| 184 | 184 |
|
| 185 |
int cols=int(sqrt(double(palette.size()))); |
|
| 185 |
int cols=int(std::sqrt(double(palette.size()))); |
|
| 186 | 186 |
for(int i=0;i<int(paletteW.size());i++) {
|
| 187 | 187 |
Node n=h.addNode(); |
| 188 | 188 |
hcoords[n]=Point(1+i%cols,1+i/cols); |
| 189 | 189 |
hcolors[n]=i; |
| 190 | 190 |
} |
| 191 | 191 |
|
| 192 | 192 |
cout << "Create 'graph_to_eps_demo_out_7_colors.eps'" << endl; |
| 193 | 193 |
graphToEps(h,"graph_to_eps_demo_out_7_colors.eps"). |
| 194 | 194 |
scale(60). |
| 195 | 195 |
title("Sample .eps figure (Palette demo)").
|
| 196 | 196 |
copyright("(C) 2003-2009 LEMON Project").
|
| 197 | 197 |
coords(hcoords). |
| 198 | 198 |
absoluteNodeSizes().absoluteArcWidths(). |
| 199 | 199 |
nodeScale(.45). |
| 200 | 200 |
distantColorNodeTexts(). |
| 201 | 201 |
nodeTexts(hcolors).nodeTextSize(.6). |
| 202 | 202 |
nodeColors(composeMap(paletteW,hcolors)). |
| 203 | 203 |
run(); |
| 204 | 204 |
|
| 205 | 205 |
return 0; |
| 206 | 206 |
} |
| 1 | 1 |
SET(PACKAGE_NAME ${PROJECT_NAME})
|
| 2 | 2 |
SET(PACKAGE_VERSION ${PROJECT_VERSION})
|
| 3 |
SET(abs_top_srcdir ${CMAKE_SOURCE_DIR})
|
|
| 4 |
SET(abs_top_builddir ${CMAKE_BINARY_DIR})
|
|
| 3 |
SET(abs_top_srcdir ${PROJECT_SOURCE_DIR})
|
|
| 4 |
SET(abs_top_builddir ${PROJECT_BINARY_DIR})
|
|
| 5 | 5 |
|
| 6 | 6 |
CONFIGURE_FILE( |
| 7 |
${CMAKE_SOURCE_DIR}/doc/Doxyfile.in
|
|
| 8 |
${CMAKE_BINARY_DIR}/doc/Doxyfile
|
|
| 9 |
|
|
| 7 |
${PROJECT_SOURCE_DIR}/doc/Doxyfile.in
|
|
| 8 |
${PROJECT_BINARY_DIR}/doc/Doxyfile
|
|
| 9 |
@ONLY |
|
| 10 |
) |
|
| 10 | 11 |
|
| 11 |
IF(DOXYGEN_EXECUTABLE AND GHOSTSCRIPT_EXECUTABLE) |
|
| 12 |
IF(DOXYGEN_EXECUTABLE AND PYTHONINTERP_FOUND AND GHOSTSCRIPT_EXECUTABLE) |
|
| 13 |
FILE(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/html/)
|
|
| 14 |
SET(GHOSTSCRIPT_OPTIONS -dNOPAUSE -dBATCH -q -dEPSCrop -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sDEVICE=pngalpha) |
|
| 15 |
ADD_CUSTOM_TARGET(html |
|
| 16 |
COMMAND ${CMAKE_COMMAND} -E remove_directory gen-images
|
|
| 17 |
COMMAND ${CMAKE_COMMAND} -E make_directory gen-images
|
|
| 18 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} ${GHOSTSCRIPT_OPTIONS} -r18 -sOutputFile=gen-images/bipartite_matching.png ${CMAKE_CURRENT_SOURCE_DIR}/images/bipartite_matching.eps
|
|
| 19 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} ${GHOSTSCRIPT_OPTIONS} -r18 -sOutputFile=gen-images/bipartite_partitions.png ${CMAKE_CURRENT_SOURCE_DIR}/images/bipartite_partitions.eps
|
|
| 20 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} ${GHOSTSCRIPT_OPTIONS} -r18 -sOutputFile=gen-images/connected_components.png ${CMAKE_CURRENT_SOURCE_DIR}/images/connected_components.eps
|
|
| 21 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} ${GHOSTSCRIPT_OPTIONS} -r18 -sOutputFile=gen-images/edge_biconnected_components.png ${CMAKE_CURRENT_SOURCE_DIR}/images/edge_biconnected_components.eps
|
|
| 22 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} ${GHOSTSCRIPT_OPTIONS} -r18 -sOutputFile=gen-images/grid_graph.png ${CMAKE_CURRENT_SOURCE_DIR}/images/grid_graph.eps
|
|
| 23 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} ${GHOSTSCRIPT_OPTIONS} -r18 -sOutputFile=gen-images/node_biconnected_components.png ${CMAKE_CURRENT_SOURCE_DIR}/images/node_biconnected_components.eps
|
|
| 24 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} ${GHOSTSCRIPT_OPTIONS} -r18 -sOutputFile=gen-images/nodeshape_0.png ${CMAKE_CURRENT_SOURCE_DIR}/images/nodeshape_0.eps
|
|
| 25 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} ${GHOSTSCRIPT_OPTIONS} -r18 -sOutputFile=gen-images/nodeshape_1.png ${CMAKE_CURRENT_SOURCE_DIR}/images/nodeshape_1.eps
|
|
| 26 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} ${GHOSTSCRIPT_OPTIONS} -r18 -sOutputFile=gen-images/nodeshape_2.png ${CMAKE_CURRENT_SOURCE_DIR}/images/nodeshape_2.eps
|
|
| 27 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} ${GHOSTSCRIPT_OPTIONS} -r18 -sOutputFile=gen-images/nodeshape_3.png ${CMAKE_CURRENT_SOURCE_DIR}/images/nodeshape_3.eps
|
|
| 28 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} ${GHOSTSCRIPT_OPTIONS} -r18 -sOutputFile=gen-images/nodeshape_4.png ${CMAKE_CURRENT_SOURCE_DIR}/images/nodeshape_4.eps
|
|
| 29 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} ${GHOSTSCRIPT_OPTIONS} -r18 -sOutputFile=gen-images/strongly_connected_components.png ${CMAKE_CURRENT_SOURCE_DIR}/images/strongly_connected_components.eps
|
|
| 30 |
COMMAND ${CMAKE_COMMAND} -E remove_directory html
|
|
| 31 |
COMMAND ${PYTHON_EXECUTABLE} ${PROJECT_SOURCE_DIR}/scripts/bib2dox.py ${CMAKE_CURRENT_SOURCE_DIR}/references.bib >references.dox
|
|
| 32 |
COMMAND ${DOXYGEN_EXECUTABLE} Doxyfile
|
|
| 33 |
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
|
|
| 34 |
) |
|
| 35 |
|
|
| 36 |
SET_TARGET_PROPERTIES(html PROPERTIES PROJECT_LABEL BUILD_DOC) |
|
| 37 |
|
|
| 12 | 38 |
IF(UNIX) |
| 13 |
ADD_CUSTOM_TARGET(html |
|
| 14 |
COMMAND rm -rf gen-images |
|
| 15 |
COMMAND mkdir gen-images |
|
| 16 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} -dNOPAUSE -dBATCH -q -dEPSCrop -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sDEVICE=pngalpha -r18 -sOutputFile=gen-images/grid_graph.png ${CMAKE_CURRENT_SOURCE_DIR}/images/grid_graph.eps
|
|
| 17 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} -dNOPAUSE -dBATCH -q -dEPSCrop -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sDEVICE=pngalpha -r18 -sOutputFile=gen-images/nodeshape_0.png ${CMAKE_CURRENT_SOURCE_DIR}/images/nodeshape_0.eps
|
|
| 18 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} -dNOPAUSE -dBATCH -q -dEPSCrop -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sDEVICE=pngalpha -r18 -sOutputFile=gen-images/nodeshape_1.png ${CMAKE_CURRENT_SOURCE_DIR}/images/nodeshape_1.eps
|
|
| 19 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} -dNOPAUSE -dBATCH -q -dEPSCrop -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sDEVICE=pngalpha -r18 -sOutputFile=gen-images/nodeshape_2.png ${CMAKE_CURRENT_SOURCE_DIR}/images/nodeshape_2.eps
|
|
| 20 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} -dNOPAUSE -dBATCH -q -dEPSCrop -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sDEVICE=pngalpha -r18 -sOutputFile=gen-images/nodeshape_3.png ${CMAKE_CURRENT_SOURCE_DIR}/images/nodeshape_3.eps
|
|
| 21 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} -dNOPAUSE -dBATCH -q -dEPSCrop -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sDEVICE=pngalpha -r18 -sOutputFile=gen-images/nodeshape_4.png ${CMAKE_CURRENT_SOURCE_DIR}/images/nodeshape_4.eps
|
|
| 22 |
COMMAND rm -rf html |
|
| 23 |
COMMAND ${DOXYGEN_EXECUTABLE} Doxyfile
|
|
| 24 |
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
|
|
| 39 |
INSTALL( |
|
| 40 |
DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/html/
|
|
| 41 |
DESTINATION share/doc/lemon/html |
|
| 42 |
COMPONENT html_documentation |
|
| 43 |
) |
|
| 25 | 44 |
ELSEIF(WIN32) |
| 26 |
ADD_CUSTOM_TARGET(html |
|
| 27 |
COMMAND if exist gen-images rmdir /s /q gen-images |
|
| 28 |
COMMAND mkdir gen-images |
|
| 29 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} -dNOPAUSE -dBATCH -q -dEPSCrop -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sDEVICE=pngalpha -r18 -sOutputFile=gen-images/nodeshape_0.png ${CMAKE_CURRENT_SOURCE_DIR}/images/nodeshape_0.eps
|
|
| 30 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} -dNOPAUSE -dBATCH -q -dEPSCrop -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sDEVICE=pngalpha -r18 -sOutputFile=gen-images/nodeshape_1.png ${CMAKE_CURRENT_SOURCE_DIR}/images/nodeshape_1.eps
|
|
| 31 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} -dNOPAUSE -dBATCH -q -dEPSCrop -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sDEVICE=pngalpha -r18 -sOutputFile=gen-images/nodeshape_2.png ${CMAKE_CURRENT_SOURCE_DIR}/images/nodeshape_2.eps
|
|
| 32 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} -dNOPAUSE -dBATCH -q -dEPSCrop -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sDEVICE=pngalpha -r18 -sOutputFile=gen-images/nodeshape_3.png ${CMAKE_CURRENT_SOURCE_DIR}/images/nodeshape_3.eps
|
|
| 33 |
COMMAND ${GHOSTSCRIPT_EXECUTABLE} -dNOPAUSE -dBATCH -q -dEPSCrop -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -sDEVICE=pngalpha -r18 -sOutputFile=gen-images/nodeshape_4.png ${CMAKE_CURRENT_SOURCE_DIR}/images/nodeshape_4.eps
|
|
| 34 |
COMMAND if exist html rmdir /s /q html |
|
| 35 |
COMMAND ${DOXYGEN_EXECUTABLE} Doxyfile
|
|
| 36 |
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
|
|
| 37 |
ENDIF(UNIX) |
|
| 38 |
|
|
| 45 |
INSTALL( |
|
| 46 |
DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/html/
|
|
| 47 |
DESTINATION doc |
|
| 48 |
COMPONENT html_documentation |
|
| 49 |
) |
|
| 50 |
ENDIF() |
|
| 39 | 51 |
|
| 40 |
INSTALL( |
|
| 41 |
DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/html/
|
|
| 42 |
DESTINATION doc |
|
| 43 |
COMPONENT html_documentation) |
|
| 52 |
ENDIF() |
| 1 |
# Doxyfile 1.5. |
|
| 1 |
# Doxyfile 1.5.9 |
|
| 2 | 2 |
|
| 3 | 3 |
#--------------------------------------------------------------------------- |
| 4 | 4 |
# Project related configuration options |
| 5 | 5 |
#--------------------------------------------------------------------------- |
| 6 | 6 |
DOXYFILE_ENCODING = UTF-8 |
| 7 | 7 |
PROJECT_NAME = @PACKAGE_NAME@ |
| 8 | 8 |
PROJECT_NUMBER = @PACKAGE_VERSION@ |
| 9 | 9 |
OUTPUT_DIRECTORY = |
| 10 | 10 |
CREATE_SUBDIRS = NO |
| 11 | 11 |
OUTPUT_LANGUAGE = English |
| 12 | 12 |
BRIEF_MEMBER_DESC = YES |
| 13 | 13 |
REPEAT_BRIEF = NO |
| 14 | 14 |
ABBREVIATE_BRIEF = |
| 15 | 15 |
ALWAYS_DETAILED_SEC = NO |
| 16 | 16 |
INLINE_INHERITED_MEMB = NO |
| 17 | 17 |
FULL_PATH_NAMES = YES |
| 18 | 18 |
STRIP_FROM_PATH = "@abs_top_srcdir@" |
| 19 | 19 |
STRIP_FROM_INC_PATH = "@abs_top_srcdir@" |
| 20 | 20 |
SHORT_NAMES = YES |
| 21 | 21 |
JAVADOC_AUTOBRIEF = NO |
| 22 | 22 |
QT_AUTOBRIEF = NO |
| 23 | 23 |
MULTILINE_CPP_IS_BRIEF = NO |
| 24 |
DETAILS_AT_TOP = YES |
|
| 25 | 24 |
INHERIT_DOCS = NO |
| 26 | 25 |
SEPARATE_MEMBER_PAGES = NO |
| 27 | 26 |
TAB_SIZE = 8 |
| 28 | 27 |
ALIASES = |
| 29 | 28 |
OPTIMIZE_OUTPUT_FOR_C = NO |
| 30 | 29 |
OPTIMIZE_OUTPUT_JAVA = NO |
| 31 | 30 |
OPTIMIZE_FOR_FORTRAN = NO |
| 32 | 31 |
OPTIMIZE_OUTPUT_VHDL = NO |
| 33 | 32 |
BUILTIN_STL_SUPPORT = YES |
| 34 | 33 |
CPP_CLI_SUPPORT = NO |
| 35 | 34 |
SIP_SUPPORT = NO |
| 36 | 35 |
IDL_PROPERTY_SUPPORT = YES |
| 37 | 36 |
DISTRIBUTE_GROUP_DOC = NO |
| 38 | 37 |
SUBGROUPING = YES |
| 39 | 38 |
TYPEDEF_HIDES_STRUCT = NO |
| 40 | 39 |
SYMBOL_CACHE_SIZE = 0 |
| 41 | 40 |
#--------------------------------------------------------------------------- |
| 42 | 41 |
# Build related configuration options |
| 43 | 42 |
#--------------------------------------------------------------------------- |
| 44 | 43 |
EXTRACT_ALL = NO |
| 45 | 44 |
EXTRACT_PRIVATE = YES |
| 46 | 45 |
EXTRACT_STATIC = YES |
| 47 | 46 |
EXTRACT_LOCAL_CLASSES = NO |
| 48 | 47 |
EXTRACT_LOCAL_METHODS = NO |
| 49 | 48 |
EXTRACT_ANON_NSPACES = NO |
| 50 | 49 |
HIDE_UNDOC_MEMBERS = YES |
| 51 | 50 |
HIDE_UNDOC_CLASSES = YES |
| 52 | 51 |
HIDE_FRIEND_COMPOUNDS = NO |
| 53 | 52 |
HIDE_IN_BODY_DOCS = NO |
| 54 | 53 |
INTERNAL_DOCS = NO |
| 55 | 54 |
CASE_SENSE_NAMES = YES |
| 56 | 55 |
HIDE_SCOPE_NAMES = YES |
| 57 | 56 |
SHOW_INCLUDE_FILES = YES |
| 58 | 57 |
INLINE_INFO = YES |
| 59 | 58 |
SORT_MEMBER_DOCS = NO |
| 60 | 59 |
SORT_BRIEF_DOCS = NO |
| 61 | 60 |
SORT_GROUP_NAMES = NO |
| 62 | 61 |
SORT_BY_SCOPE_NAME = NO |
| 63 | 62 |
GENERATE_TODOLIST = YES |
| 64 | 63 |
GENERATE_TESTLIST = YES |
| 65 | 64 |
GENERATE_BUGLIST = YES |
| 66 | 65 |
GENERATE_DEPRECATEDLIST= YES |
| 67 | 66 |
ENABLED_SECTIONS = |
| 68 | 67 |
MAX_INITIALIZER_LINES = 5 |
| 69 | 68 |
SHOW_USED_FILES = NO |
| 70 | 69 |
SHOW_DIRECTORIES = YES |
| 71 | 70 |
SHOW_FILES = YES |
| 72 | 71 |
SHOW_NAMESPACES = YES |
| 73 | 72 |
FILE_VERSION_FILTER = |
| 74 | 73 |
LAYOUT_FILE = DoxygenLayout.xml |
| 75 | 74 |
#--------------------------------------------------------------------------- |
| 76 | 75 |
# configuration options related to warning and progress messages |
| 77 | 76 |
#--------------------------------------------------------------------------- |
| 78 | 77 |
QUIET = NO |
| 79 | 78 |
WARNINGS = YES |
| 80 | 79 |
WARN_IF_UNDOCUMENTED = YES |
| 81 | 80 |
WARN_IF_DOC_ERROR = YES |
| 82 | 81 |
WARN_NO_PARAMDOC = NO |
| 83 | 82 |
WARN_FORMAT = "$file:$line: $text" |
| 84 | 83 |
WARN_LOGFILE = doxygen.log |
| 85 | 84 |
#--------------------------------------------------------------------------- |
| 86 | 85 |
# configuration options related to the input files |
| 87 | 86 |
#--------------------------------------------------------------------------- |
| 88 | 87 |
INPUT = "@abs_top_srcdir@/doc" \ |
| 89 | 88 |
"@abs_top_srcdir@/lemon" \ |
| 90 | 89 |
"@abs_top_srcdir@/lemon/bits" \ |
| 91 | 90 |
"@abs_top_srcdir@/lemon/concepts" \ |
| 92 | 91 |
"@abs_top_srcdir@/demo" \ |
| 93 | 92 |
"@abs_top_srcdir@/tools" \ |
| 94 |
"@abs_top_srcdir@/test/test_tools.h" |
|
| 93 |
"@abs_top_srcdir@/test/test_tools.h" \ |
|
| 94 |
"@abs_top_builddir@/doc/references.dox" |
|
| 95 | 95 |
INPUT_ENCODING = UTF-8 |
| 96 | 96 |
FILE_PATTERNS = *.h \ |
| 97 | 97 |
*.cc \ |
| 98 | 98 |
*.dox |
| 99 | 99 |
RECURSIVE = NO |
| 100 | 100 |
EXCLUDE = |
| 101 | 101 |
EXCLUDE_SYMLINKS = NO |
| 102 | 102 |
EXCLUDE_PATTERNS = |
| 103 | 103 |
EXCLUDE_SYMBOLS = |
| 104 | 104 |
EXAMPLE_PATH = "@abs_top_srcdir@/demo" \ |
| 105 | 105 |
"@abs_top_srcdir@/LICENSE" \ |
| 106 | 106 |
"@abs_top_srcdir@/doc" |
| 107 | 107 |
EXAMPLE_PATTERNS = |
| 108 | 108 |
EXAMPLE_RECURSIVE = NO |
| 109 | 109 |
IMAGE_PATH = "@abs_top_srcdir@/doc/images" \ |
| 110 | 110 |
"@abs_top_builddir@/doc/gen-images" |
| 111 | 111 |
INPUT_FILTER = |
| 112 | 112 |
FILTER_PATTERNS = |
| 113 | 113 |
FILTER_SOURCE_FILES = NO |
| 114 | 114 |
#--------------------------------------------------------------------------- |
| 115 | 115 |
# configuration options related to source browsing |
| 116 | 116 |
#--------------------------------------------------------------------------- |
| 117 | 117 |
SOURCE_BROWSER = NO |
| 118 | 118 |
INLINE_SOURCES = NO |
| 119 | 119 |
STRIP_CODE_COMMENTS = YES |
| 120 | 120 |
REFERENCED_BY_RELATION = NO |
| 121 | 121 |
REFERENCES_RELATION = NO |
| 122 | 122 |
REFERENCES_LINK_SOURCE = YES |
| 123 | 123 |
USE_HTAGS = NO |
| 124 | 124 |
VERBATIM_HEADERS = NO |
| 125 | 125 |
#--------------------------------------------------------------------------- |
| 126 | 126 |
# configuration options related to the alphabetical class index |
| 127 | 127 |
#--------------------------------------------------------------------------- |
| 128 | 128 |
ALPHABETICAL_INDEX = YES |
| 129 | 129 |
COLS_IN_ALPHA_INDEX = 2 |
| 130 | 130 |
IGNORE_PREFIX = |
| 131 | 131 |
#--------------------------------------------------------------------------- |
| 132 | 132 |
# configuration options related to the HTML output |
| 133 | 133 |
#--------------------------------------------------------------------------- |
| 134 | 134 |
GENERATE_HTML = YES |
| 135 | 135 |
HTML_OUTPUT = html |
| 136 | 136 |
HTML_FILE_EXTENSION = .html |
| 137 | 137 |
HTML_HEADER = |
| 138 | 138 |
HTML_FOOTER = |
| 139 | 139 |
HTML_STYLESHEET = |
| 140 | 140 |
HTML_ALIGN_MEMBERS = YES |
| 141 | 141 |
HTML_DYNAMIC_SECTIONS = NO |
| 142 | 142 |
GENERATE_DOCSET = NO |
| 143 | 143 |
DOCSET_FEEDNAME = "Doxygen generated docs" |
| 144 | 144 |
DOCSET_BUNDLE_ID = org.doxygen.Project |
| 145 | 145 |
GENERATE_HTMLHELP = NO |
| 146 | 146 |
CHM_FILE = |
| 147 | 147 |
HHC_LOCATION = |
| 148 | 148 |
GENERATE_CHI = NO |
| 149 | 149 |
CHM_INDEX_ENCODING = |
| 150 | 150 |
BINARY_TOC = NO |
| 151 | 151 |
TOC_EXPAND = NO |
| 152 | 152 |
GENERATE_QHP = NO |
| 153 | 153 |
QCH_FILE = |
| 154 | 154 |
QHP_NAMESPACE = org.doxygen.Project |
| 155 | 155 |
QHP_VIRTUAL_FOLDER = doc |
| 156 | 156 |
QHG_LOCATION = |
| 157 | 157 |
DISABLE_INDEX = NO |
| 158 | 158 |
ENUM_VALUES_PER_LINE = 4 |
| 159 | 159 |
GENERATE_TREEVIEW = NO |
| 160 | 160 |
TREEVIEW_WIDTH = 250 |
| 161 | 161 |
FORMULA_FONTSIZE = 10 |
| 162 | 162 |
#--------------------------------------------------------------------------- |
| 163 | 163 |
# configuration options related to the LaTeX output |
| 164 | 164 |
#--------------------------------------------------------------------------- |
| 165 | 165 |
GENERATE_LATEX = NO |
| 166 | 166 |
LATEX_OUTPUT = latex |
| 167 | 167 |
LATEX_CMD_NAME = latex |
| 168 | 168 |
MAKEINDEX_CMD_NAME = makeindex |
| 169 | 169 |
COMPACT_LATEX = YES |
| 170 | 170 |
PAPER_TYPE = a4wide |
| 171 | 171 |
EXTRA_PACKAGES = amsmath \ |
| 172 | 172 |
amssymb |
| 173 | 173 |
LATEX_HEADER = |
| 174 | 174 |
PDF_HYPERLINKS = YES |
| 175 | 175 |
USE_PDFLATEX = YES |
| 176 | 176 |
LATEX_BATCHMODE = NO |
| 177 | 177 |
LATEX_HIDE_INDICES = NO |
| 178 | 178 |
#--------------------------------------------------------------------------- |
| 179 | 179 |
# configuration options related to the RTF output |
| 180 | 180 |
#--------------------------------------------------------------------------- |
| 181 | 181 |
GENERATE_RTF = NO |
| 182 | 182 |
RTF_OUTPUT = rtf |
| 183 | 183 |
COMPACT_RTF = NO |
| 184 | 184 |
RTF_HYPERLINKS = NO |
| 185 | 185 |
RTF_STYLESHEET_FILE = |
| 186 | 186 |
RTF_EXTENSIONS_FILE = |
| 187 | 187 |
#--------------------------------------------------------------------------- |
| 188 | 188 |
# configuration options related to the man page output |
| 189 | 189 |
#--------------------------------------------------------------------------- |
| 190 | 190 |
GENERATE_MAN = NO |
| 191 | 191 |
MAN_OUTPUT = man |
| 192 | 192 |
MAN_EXTENSION = .3 |
| 193 | 193 |
MAN_LINKS = NO |
| 194 | 194 |
#--------------------------------------------------------------------------- |
| 195 | 195 |
# configuration options related to the XML output |
| 196 | 196 |
#--------------------------------------------------------------------------- |
| 197 | 197 |
GENERATE_XML = NO |
| 198 | 198 |
XML_OUTPUT = xml |
| 199 | 199 |
XML_SCHEMA = |
| 200 | 200 |
XML_DTD = |
| 201 | 201 |
XML_PROGRAMLISTING = YES |
| 202 | 202 |
#--------------------------------------------------------------------------- |
| 203 | 203 |
# configuration options for the AutoGen Definitions output |
| 204 | 204 |
#--------------------------------------------------------------------------- |
| 205 | 205 |
GENERATE_AUTOGEN_DEF = NO |
| 206 | 206 |
#--------------------------------------------------------------------------- |
| 207 | 207 |
# configuration options related to the Perl module output |
| 208 | 208 |
#--------------------------------------------------------------------------- |
| 209 | 209 |
GENERATE_PERLMOD = NO |
| 210 | 210 |
PERLMOD_LATEX = NO |
| 211 | 211 |
PERLMOD_PRETTY = YES |
| 212 | 212 |
PERLMOD_MAKEVAR_PREFIX = |
| 213 | 213 |
#--------------------------------------------------------------------------- |
| 214 | 214 |
# Configuration options related to the preprocessor |
| 215 | 215 |
#--------------------------------------------------------------------------- |
| 216 | 216 |
ENABLE_PREPROCESSING = YES |
| 217 | 217 |
MACRO_EXPANSION = NO |
| 218 | 218 |
EXPAND_ONLY_PREDEF = NO |
| 219 | 219 |
SEARCH_INCLUDES = YES |
| 220 | 220 |
INCLUDE_PATH = |
| 221 | 221 |
INCLUDE_FILE_PATTERNS = |
| 222 | 222 |
PREDEFINED = DOXYGEN |
| 223 | 223 |
EXPAND_AS_DEFINED = |
| 224 | 224 |
SKIP_FUNCTION_MACROS = YES |
| 225 | 225 |
#--------------------------------------------------------------------------- |
| 226 |
# |
|
| 226 |
# Options related to the search engine |
|
| 227 | 227 |
#--------------------------------------------------------------------------- |
| 228 | 228 |
TAGFILES = "@abs_top_srcdir@/doc/libstdc++.tag = http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/ " |
| 229 | 229 |
GENERATE_TAGFILE = html/lemon.tag |
| 230 | 230 |
ALLEXTERNALS = NO |
| 231 | 231 |
EXTERNAL_GROUPS = NO |
| 232 | 232 |
PERL_PATH = /usr/bin/perl |
| 233 | 233 |
#--------------------------------------------------------------------------- |
| 234 | 234 |
# Configuration options related to the dot tool |
| 235 | 235 |
#--------------------------------------------------------------------------- |
| 236 | 236 |
CLASS_DIAGRAMS = YES |
| 237 | 237 |
MSCGEN_PATH = |
| 238 | 238 |
HIDE_UNDOC_RELATIONS = YES |
| 239 | 239 |
HAVE_DOT = YES |
| 240 | 240 |
DOT_FONTNAME = FreeSans |
| 241 | 241 |
DOT_FONTSIZE = 10 |
| 242 | 242 |
DOT_FONTPATH = |
| 243 | 243 |
CLASS_GRAPH = YES |
| 244 | 244 |
COLLABORATION_GRAPH = NO |
| 245 | 245 |
GROUP_GRAPHS = NO |
| 246 | 246 |
UML_LOOK = NO |
| 247 | 247 |
TEMPLATE_RELATIONS = NO |
| 248 | 248 |
INCLUDE_GRAPH = NO |
| 249 | 249 |
INCLUDED_BY_GRAPH = NO |
| 250 | 250 |
CALL_GRAPH = NO |
| 251 | 251 |
CALLER_GRAPH = NO |
| 252 | 252 |
GRAPHICAL_HIERARCHY = NO |
| 253 | 253 |
DIRECTORY_GRAPH = NO |
| 254 | 254 |
DOT_IMAGE_FORMAT = png |
| 255 | 255 |
DOT_PATH = |
| 256 | 256 |
DOTFILE_DIRS = |
| 257 | 257 |
DOT_GRAPH_MAX_NODES = 50 |
| 258 | 258 |
MAX_DOT_GRAPH_DEPTH = 0 |
| 259 | 259 |
DOT_TRANSPARENT = NO |
| 260 | 260 |
DOT_MULTI_TARGETS = NO |
| 261 | 261 |
GENERATE_LEGEND = YES |
| 262 | 262 |
DOT_CLEANUP = YES |
| 263 | 263 |
#--------------------------------------------------------------------------- |
| 264 | 264 |
# Configuration::additions related to the search engine |
| 265 | 265 |
#--------------------------------------------------------------------------- |
| 266 | 266 |
SEARCHENGINE = NO |
| 1 | 1 |
EXTRA_DIST += \ |
| 2 | 2 |
doc/Doxyfile.in \ |
| 3 | 3 |
doc/DoxygenLayout.xml \ |
| 4 | 4 |
doc/coding_style.dox \ |
| 5 | 5 |
doc/dirs.dox \ |
| 6 | 6 |
doc/groups.dox \ |
| 7 | 7 |
doc/lgf.dox \ |
| 8 | 8 |
doc/license.dox \ |
| 9 | 9 |
doc/mainpage.dox \ |
| 10 | 10 |
doc/migration.dox \ |
| 11 |
doc/min_cost_flow.dox \ |
|
| 11 | 12 |
doc/named-param.dox \ |
| 12 | 13 |
doc/namespaces.dox \ |
| 13 | 14 |
doc/html \ |
| 14 | 15 |
doc/CMakeLists.txt |
| 15 | 16 |
|
| 16 | 17 |
DOC_EPS_IMAGES18 = \ |
| 17 | 18 |
grid_graph.eps \ |
| 18 | 19 |
nodeshape_0.eps \ |
| 19 | 20 |
nodeshape_1.eps \ |
| 20 | 21 |
nodeshape_2.eps \ |
| 21 | 22 |
nodeshape_3.eps \ |
| 22 | 23 |
nodeshape_4.eps |
| 23 | 24 |
|
| 25 |
DOC_EPS_IMAGES27 = \ |
|
| 26 |
bipartite_matching.eps \ |
|
| 27 |
bipartite_partitions.eps \ |
|
| 28 |
connected_components.eps \ |
|
| 29 |
edge_biconnected_components.eps \ |
|
| 30 |
node_biconnected_components.eps \ |
|
| 31 |
strongly_connected_components.eps |
|
| 32 |
|
|
| 24 | 33 |
DOC_EPS_IMAGES = \ |
| 25 |
$(DOC_EPS_IMAGES18) |
|
| 34 |
$(DOC_EPS_IMAGES18) \ |
|
| 35 |
$(DOC_EPS_IMAGES27) |
|
| 26 | 36 |
|
| 27 | 37 |
DOC_PNG_IMAGES = \ |
| 28 | 38 |
$(DOC_EPS_IMAGES:%.eps=doc/gen-images/%.png) |
| 29 | 39 |
|
| 30 | 40 |
EXTRA_DIST += $(DOC_EPS_IMAGES:%=doc/images/%) |
| 31 | 41 |
|
| 32 | 42 |
doc/html: |
| 33 | 43 |
$(MAKE) $(AM_MAKEFLAGS) html |
| 34 | 44 |
|
| 35 | 45 |
GS_COMMAND=gs -dNOPAUSE -dBATCH -q -dEPSCrop -dTextAlphaBits=4 -dGraphicsAlphaBits=4 |
| 36 | 46 |
|
| 37 | 47 |
$(DOC_EPS_IMAGES18:%.eps=doc/gen-images/%.png): doc/gen-images/%.png: doc/images/%.eps |
| 38 | 48 |
-mkdir doc/gen-images |
| 39 | 49 |
if test ${gs_found} = yes; then \
|
| 40 | 50 |
$(GS_COMMAND) -sDEVICE=pngalpha -r18 -sOutputFile=$@ $<; \ |
| 41 | 51 |
else \ |
| 42 | 52 |
echo; \ |
| 43 | 53 |
echo "Ghostscript not found."; \ |
| 44 | 54 |
echo; \ |
| 45 | 55 |
exit 1; \ |
| 46 | 56 |
fi |
| 47 | 57 |
|
| 48 |
|
|
| 58 |
$(DOC_EPS_IMAGES27:%.eps=doc/gen-images/%.png): doc/gen-images/%.png: doc/images/%.eps |
|
| 59 |
-mkdir doc/gen-images |
|
| 60 |
if test ${gs_found} = yes; then \
|
|
| 61 |
$(GS_COMMAND) -sDEVICE=pngalpha -r27 -sOutputFile=$@ $<; \ |
|
| 62 |
else \ |
|
| 63 |
echo; \ |
|
| 64 |
echo "Ghostscript not found."; \ |
|
| 65 |
echo; \ |
|
| 66 |
exit 1; \ |
|
| 67 |
fi |
|
| 68 |
|
|
| 69 |
references.dox: doc/references.bib |
|
| 70 |
if test ${python_found} = yes; then \
|
|
| 71 |
cd doc; \ |
|
| 72 |
python @abs_top_srcdir@/scripts/bib2dox.py @abs_top_builddir@/$< >$@; \ |
|
| 73 |
cd ..; \ |
|
| 74 |
else \ |
|
| 75 |
echo; \ |
|
| 76 |
echo "Python not found."; \ |
|
| 77 |
echo; \ |
|
| 78 |
exit 1; \ |
|
| 79 |
fi |
|
| 80 |
|
|
| 81 |
html-local: $(DOC_PNG_IMAGES) references.dox |
|
| 49 | 82 |
if test ${doxygen_found} = yes; then \
|
| 50 | 83 |
cd doc; \ |
| 51 | 84 |
doxygen Doxyfile; \ |
| 52 | 85 |
cd ..; \ |
| 53 | 86 |
else \ |
| 54 | 87 |
echo; \ |
| 55 | 88 |
echo "Doxygen not found."; \ |
| 56 | 89 |
echo; \ |
| 57 | 90 |
exit 1; \ |
| 58 | 91 |
fi |
| 59 | 92 |
|
| 60 | 93 |
clean-local: |
| 61 | 94 |
-rm -rf doc/html |
| 62 | 95 |
-rm -f doc/doxygen.log |
| 63 | 96 |
-rm -f $(DOC_PNG_IMAGES) |
| 64 | 97 |
-rm -rf doc/gen-images |
| 65 | 98 |
|
| 66 | 99 |
update-external-tags: |
| 67 | 100 |
wget -O doc/libstdc++.tag.tmp http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/libstdc++.tag && \ |
| 68 | 101 |
mv doc/libstdc++.tag.tmp doc/libstdc++.tag || \ |
| 69 | 102 |
rm doc/libstdc++.tag.tmp |
| 70 | 103 |
|
| 71 | 104 |
install-html-local: doc/html |
| 72 | 105 |
@$(NORMAL_INSTALL) |
| 73 |
$(mkinstalldirs) $(DESTDIR)$(htmldir)/ |
|
| 106 |
$(mkinstalldirs) $(DESTDIR)$(htmldir)/html |
|
| 74 | 107 |
for p in doc/html/*.{html,css,png,map,gif,tag} ; do \
|
| 75 | 108 |
f="`echo $$p | sed -e 's|^.*/||'`"; \ |
| 76 |
echo " $(INSTALL_DATA) $$p $(DESTDIR)$(htmldir)/docs/$$f"; \ |
|
| 77 |
$(INSTALL_DATA) $$p $(DESTDIR)$(htmldir)/docs/$$f; \ |
|
| 109 |
echo " $(INSTALL_DATA) $$p $(DESTDIR)$(htmldir)/html/$$f"; \ |
|
| 110 |
$(INSTALL_DATA) $$p $(DESTDIR)$(htmldir)/html/$$f; \ |
|
| 78 | 111 |
done |
| 79 | 112 |
|
| 80 | 113 |
uninstall-local: |
| 81 | 114 |
@$(NORMAL_UNINSTALL) |
| 82 | 115 |
for p in doc/html/*.{html,css,png,map,gif,tag} ; do \
|
| 83 | 116 |
f="`echo $$p | sed -e 's|^.*/||'`"; \ |
| 84 |
echo " rm -f $(DESTDIR)$(htmldir)/docs/$$f"; \ |
|
| 85 |
rm -f $(DESTDIR)$(htmldir)/docs/$$f; \ |
|
| 117 |
echo " rm -f $(DESTDIR)$(htmldir)/html/$$f"; \ |
|
| 118 |
rm -f $(DESTDIR)$(htmldir)/html/$$f; \ |
|
| 86 | 119 |
done |
| 87 | 120 |
|
| 88 | 121 |
.PHONY: update-external-tags |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
namespace lemon {
|
| 20 | 20 |
|
| 21 | 21 |
/** |
| 22 | 22 |
@defgroup datas Data Structures |
| 23 |
This group |
|
| 23 |
This group contains the several data structures implemented in LEMON. |
|
| 24 | 24 |
*/ |
| 25 | 25 |
|
| 26 | 26 |
/** |
| 27 | 27 |
@defgroup graphs Graph Structures |
| 28 | 28 |
@ingroup datas |
| 29 | 29 |
\brief Graph structures implemented in LEMON. |
| 30 | 30 |
|
| 31 | 31 |
The implementation of combinatorial algorithms heavily relies on |
| 32 | 32 |
efficient graph implementations. LEMON offers data structures which are |
| 33 | 33 |
planned to be easily used in an experimental phase of implementation studies, |
| 34 | 34 |
and thereafter the program code can be made efficient by small modifications. |
| 35 | 35 |
|
| 36 | 36 |
The most efficient implementation of diverse applications require the |
| 37 | 37 |
usage of different physical graph implementations. These differences |
| 38 | 38 |
appear in the size of graph we require to handle, memory or time usage |
| 39 | 39 |
limitations or in the set of operations through which the graph can be |
| 40 | 40 |
accessed. LEMON provides several physical graph structures to meet |
| 41 | 41 |
the diverging requirements of the possible users. In order to save on |
| 42 | 42 |
running time or on memory usage, some structures may fail to provide |
| 43 | 43 |
some graph features like arc/edge or node deletion. |
| 44 | 44 |
|
| 45 | 45 |
Alteration of standard containers need a very limited number of |
| 46 | 46 |
operations, these together satisfy the everyday requirements. |
| 47 | 47 |
In the case of graph structures, different operations are needed which do |
| 48 | 48 |
not alter the physical graph, but gives another view. If some nodes or |
| 49 | 49 |
arcs have to be hidden or the reverse oriented graph have to be used, then |
| 50 | 50 |
this is the case. It also may happen that in a flow implementation |
| 51 | 51 |
the residual graph can be accessed by another algorithm, or a node-set |
| 52 | 52 |
is to be shrunk for another algorithm. |
| 53 | 53 |
LEMON also provides a variety of graphs for these requirements called |
| 54 | 54 |
\ref graph_adaptors "graph adaptors". Adaptors cannot be used alone but only |
| 55 | 55 |
in conjunction with other graph representations. |
| 56 | 56 |
|
| 57 | 57 |
You are free to use the graph structure that fit your requirements |
| 58 | 58 |
the best, most graph algorithms and auxiliary data structures can be used |
| 59 | 59 |
with any graph structure. |
| 60 | 60 |
|
| 61 | 61 |
<b>See also:</b> \ref graph_concepts "Graph Structure Concepts". |
| 62 | 62 |
*/ |
| 63 | 63 |
|
| 64 | 64 |
/** |
| 65 | 65 |
@defgroup graph_adaptors Adaptor Classes for Graphs |
| 66 | 66 |
@ingroup graphs |
| 67 | 67 |
\brief Adaptor classes for digraphs and graphs |
| 68 | 68 |
|
| 69 | 69 |
This group contains several useful adaptor classes for digraphs and graphs. |
| 70 | 70 |
|
| 71 | 71 |
The main parts of LEMON are the different graph structures, generic |
| 72 | 72 |
graph algorithms, graph concepts, which couple them, and graph |
| 73 | 73 |
adaptors. While the previous notions are more or less clear, the |
| 74 | 74 |
latter one needs further explanation. Graph adaptors are graph classes |
| 75 | 75 |
which serve for considering graph structures in different ways. |
| 76 | 76 |
|
| 77 | 77 |
A short example makes this much clearer. Suppose that we have an |
| 78 | 78 |
instance \c g of a directed graph type, say ListDigraph and an algorithm |
| 79 | 79 |
\code |
| 80 | 80 |
template <typename Digraph> |
| 81 | 81 |
int algorithm(const Digraph&); |
| 82 | 82 |
\endcode |
| 83 | 83 |
is needed to run on the reverse oriented graph. It may be expensive |
| 84 | 84 |
(in time or in memory usage) to copy \c g with the reversed |
| 85 | 85 |
arcs. In this case, an adaptor class is used, which (according |
| 86 | 86 |
to LEMON \ref concepts::Digraph "digraph concepts") works as a digraph. |
| 87 | 87 |
The adaptor uses the original digraph structure and digraph operations when |
| 88 | 88 |
methods of the reversed oriented graph are called. This means that the adaptor |
| 89 | 89 |
have minor memory usage, and do not perform sophisticated algorithmic |
| 90 | 90 |
actions. The purpose of it is to give a tool for the cases when a |
| 91 | 91 |
graph have to be used in a specific alteration. If this alteration is |
| 92 | 92 |
obtained by a usual construction like filtering the node or the arc set or |
| 93 | 93 |
considering a new orientation, then an adaptor is worthwhile to use. |
| 94 | 94 |
To come back to the reverse oriented graph, in this situation |
| 95 | 95 |
\code |
| 96 | 96 |
template<typename Digraph> class ReverseDigraph; |
| 97 | 97 |
\endcode |
| 98 | 98 |
template class can be used. The code looks as follows |
| 99 | 99 |
\code |
| 100 | 100 |
ListDigraph g; |
| 101 | 101 |
ReverseDigraph<ListDigraph> rg(g); |
| 102 | 102 |
int result = algorithm(rg); |
| 103 | 103 |
\endcode |
| 104 | 104 |
During running the algorithm, the original digraph \c g is untouched. |
| 105 | 105 |
This techniques give rise to an elegant code, and based on stable |
| 106 | 106 |
graph adaptors, complex algorithms can be implemented easily. |
| 107 | 107 |
|
| 108 | 108 |
In flow, circulation and matching problems, the residual |
| 109 | 109 |
graph is of particular importance. Combining an adaptor implementing |
| 110 | 110 |
this with shortest path algorithms or minimum mean cycle algorithms, |
| 111 | 111 |
a range of weighted and cardinality optimization algorithms can be |
| 112 | 112 |
obtained. For other examples, the interested user is referred to the |
| 113 | 113 |
detailed documentation of particular adaptors. |
| 114 | 114 |
|
| 115 | 115 |
The behavior of graph adaptors can be very different. Some of them keep |
| 116 | 116 |
capabilities of the original graph while in other cases this would be |
| 117 | 117 |
meaningless. This means that the concepts that they meet depend |
| 118 | 118 |
on the graph adaptor, and the wrapped graph. |
| 119 | 119 |
For example, if an arc of a reversed digraph is deleted, this is carried |
| 120 | 120 |
out by deleting the corresponding arc of the original digraph, thus the |
| 121 | 121 |
adaptor modifies the original digraph. |
| 122 | 122 |
However in case of a residual digraph, this operation has no sense. |
| 123 | 123 |
|
| 124 | 124 |
Let us stand one more example here to simplify your work. |
| 125 | 125 |
ReverseDigraph has constructor |
| 126 | 126 |
\code |
| 127 | 127 |
ReverseDigraph(Digraph& digraph); |
| 128 | 128 |
\endcode |
| 129 | 129 |
This means that in a situation, when a <tt>const %ListDigraph&</tt> |
| 130 | 130 |
reference to a graph is given, then it have to be instantiated with |
| 131 | 131 |
<tt>Digraph=const %ListDigraph</tt>. |
| 132 | 132 |
\code |
| 133 | 133 |
int algorithm1(const ListDigraph& g) {
|
| 134 | 134 |
ReverseDigraph<const ListDigraph> rg(g); |
| 135 | 135 |
return algorithm2(rg); |
| 136 | 136 |
} |
| 137 | 137 |
\endcode |
| 138 | 138 |
*/ |
| 139 | 139 |
|
| 140 | 140 |
/** |
| 141 |
@defgroup semi_adaptors Semi-Adaptor Classes for Graphs |
|
| 142 |
@ingroup graphs |
|
| 143 |
\brief Graph types between real graphs and graph adaptors. |
|
| 144 |
|
|
| 145 |
This group describes some graph types between real graphs and graph adaptors. |
|
| 146 |
These classes wrap graphs to give new functionality as the adaptors do it. |
|
| 147 |
On the other hand they are not light-weight structures as the adaptors. |
|
| 148 |
*/ |
|
| 149 |
|
|
| 150 |
/** |
|
| 151 | 141 |
@defgroup maps Maps |
| 152 | 142 |
@ingroup datas |
| 153 | 143 |
\brief Map structures implemented in LEMON. |
| 154 | 144 |
|
| 155 |
This group |
|
| 145 |
This group contains the map structures implemented in LEMON. |
|
| 156 | 146 |
|
| 157 | 147 |
LEMON provides several special purpose maps and map adaptors that e.g. combine |
| 158 | 148 |
new maps from existing ones. |
| 159 | 149 |
|
| 160 | 150 |
<b>See also:</b> \ref map_concepts "Map Concepts". |
| 161 | 151 |
*/ |
| 162 | 152 |
|
| 163 | 153 |
/** |
| 164 | 154 |
@defgroup graph_maps Graph Maps |
| 165 | 155 |
@ingroup maps |
| 166 | 156 |
\brief Special graph-related maps. |
| 167 | 157 |
|
| 168 |
This group |
|
| 158 |
This group contains maps that are specifically designed to assign |
|
| 169 | 159 |
values to the nodes and arcs/edges of graphs. |
| 170 | 160 |
|
| 171 | 161 |
If you are looking for the standard graph maps (\c NodeMap, \c ArcMap, |
| 172 | 162 |
\c EdgeMap), see the \ref graph_concepts "Graph Structure Concepts". |
| 173 | 163 |
*/ |
| 174 | 164 |
|
| 175 | 165 |
/** |
| 176 | 166 |
\defgroup map_adaptors Map Adaptors |
| 177 | 167 |
\ingroup maps |
| 178 | 168 |
\brief Tools to create new maps from existing ones |
| 179 | 169 |
|
| 180 |
This group |
|
| 170 |
This group contains map adaptors that are used to create "implicit" |
|
| 181 | 171 |
maps from other maps. |
| 182 | 172 |
|
| 183 | 173 |
Most of them are \ref concepts::ReadMap "read-only maps". |
| 184 | 174 |
They can make arithmetic and logical operations between one or two maps |
| 185 | 175 |
(negation, shifting, addition, multiplication, logical 'and', 'or', |
| 186 | 176 |
'not' etc.) or e.g. convert a map to another one of different Value type. |
| 187 | 177 |
|
| 188 | 178 |
The typical usage of this classes is passing implicit maps to |
| 189 | 179 |
algorithms. If a function type algorithm is called then the function |
| 190 | 180 |
type map adaptors can be used comfortable. For example let's see the |
| 191 | 181 |
usage of map adaptors with the \c graphToEps() function. |
| 192 | 182 |
\code |
| 193 | 183 |
Color nodeColor(int deg) {
|
| 194 | 184 |
if (deg >= 2) {
|
| 195 | 185 |
return Color(0.5, 0.0, 0.5); |
| 196 | 186 |
} else if (deg == 1) {
|
| 197 | 187 |
return Color(1.0, 0.5, 1.0); |
| 198 | 188 |
} else {
|
| 199 | 189 |
return Color(0.0, 0.0, 0.0); |
| 200 | 190 |
} |
| 201 | 191 |
} |
| 202 | 192 |
|
| 203 | 193 |
Digraph::NodeMap<int> degree_map(graph); |
| 204 | 194 |
|
| 205 | 195 |
graphToEps(graph, "graph.eps") |
| 206 | 196 |
.coords(coords).scaleToA4().undirected() |
| 207 | 197 |
.nodeColors(composeMap(functorToMap(nodeColor), degree_map)) |
| 208 | 198 |
.run(); |
| 209 | 199 |
\endcode |
| 210 | 200 |
The \c functorToMap() function makes an \c int to \c Color map from the |
| 211 | 201 |
\c nodeColor() function. The \c composeMap() compose the \c degree_map |
| 212 | 202 |
and the previously created map. The composed map is a proper function to |
| 213 | 203 |
get the color of each node. |
| 214 | 204 |
|
| 215 | 205 |
The usage with class type algorithms is little bit harder. In this |
| 216 | 206 |
case the function type map adaptors can not be used, because the |
| 217 | 207 |
function map adaptors give back temporary objects. |
| 218 | 208 |
\code |
| 219 | 209 |
Digraph graph; |
| 220 | 210 |
|
| 221 | 211 |
typedef Digraph::ArcMap<double> DoubleArcMap; |
| 222 | 212 |
DoubleArcMap length(graph); |
| 223 | 213 |
DoubleArcMap speed(graph); |
| 224 | 214 |
|
| 225 | 215 |
typedef DivMap<DoubleArcMap, DoubleArcMap> TimeMap; |
| 226 | 216 |
TimeMap time(length, speed); |
| 227 | 217 |
|
| 228 | 218 |
Dijkstra<Digraph, TimeMap> dijkstra(graph, time); |
| 229 | 219 |
dijkstra.run(source, target); |
| 230 | 220 |
\endcode |
| 231 | 221 |
We have a length map and a maximum speed map on the arcs of a digraph. |
| 232 | 222 |
The minimum time to pass the arc can be calculated as the division of |
| 233 | 223 |
the two maps which can be done implicitly with the \c DivMap template |
| 234 | 224 |
class. We use the implicit minimum time map as the length map of the |
| 235 | 225 |
\c Dijkstra algorithm. |
| 236 | 226 |
*/ |
| 237 | 227 |
|
| 238 | 228 |
/** |
| 239 |
@defgroup matrices Matrices |
|
| 240 |
@ingroup datas |
|
| 241 |
\brief Two dimensional data storages implemented in LEMON. |
|
| 242 |
|
|
| 243 |
This group describes two dimensional data storages implemented in LEMON. |
|
| 244 |
*/ |
|
| 245 |
|
|
| 246 |
/** |
|
| 247 | 229 |
@defgroup paths Path Structures |
| 248 | 230 |
@ingroup datas |
| 249 | 231 |
\brief %Path structures implemented in LEMON. |
| 250 | 232 |
|
| 251 |
This group |
|
| 233 |
This group contains the path structures implemented in LEMON. |
|
| 252 | 234 |
|
| 253 | 235 |
LEMON provides flexible data structures to work with paths. |
| 254 | 236 |
All of them have similar interfaces and they can be copied easily with |
| 255 | 237 |
assignment operators and copy constructors. This makes it easy and |
| 256 | 238 |
efficient to have e.g. the Dijkstra algorithm to store its result in |
| 257 | 239 |
any kind of path structure. |
| 258 | 240 |
|
| 259 |
\sa |
|
| 241 |
\sa \ref concepts::Path "Path concept" |
|
| 242 |
*/ |
|
| 243 |
|
|
| 244 |
/** |
|
| 245 |
@defgroup heaps Heap Structures |
|
| 246 |
@ingroup datas |
|
| 247 |
\brief %Heap structures implemented in LEMON. |
|
| 248 |
|
|
| 249 |
This group contains the heap structures implemented in LEMON. |
|
| 250 |
|
|
| 251 |
LEMON provides several heap classes. They are efficient implementations |
|
| 252 |
of the abstract data type \e priority \e queue. They store items with |
|
| 253 |
specified values called \e priorities in such a way that finding and |
|
| 254 |
removing the item with minimum priority are efficient. |
|
| 255 |
The basic operations are adding and erasing items, changing the priority |
|
| 256 |
of an item, etc. |
|
| 257 |
|
|
| 258 |
Heaps are crucial in several algorithms, such as Dijkstra and Prim. |
|
| 259 |
The heap implementations have the same interface, thus any of them can be |
|
| 260 |
used easily in such algorithms. |
|
| 261 |
|
|
| 262 |
\sa \ref concepts::Heap "Heap concept" |
|
| 263 |
*/ |
|
| 264 |
|
|
| 265 |
/** |
|
| 266 |
@defgroup matrices Matrices |
|
| 267 |
@ingroup datas |
|
| 268 |
\brief Two dimensional data storages implemented in LEMON. |
|
| 269 |
|
|
| 270 |
This group contains two dimensional data storages implemented in LEMON. |
|
| 260 | 271 |
*/ |
| 261 | 272 |
|
| 262 | 273 |
/** |
| 263 | 274 |
@defgroup auxdat Auxiliary Data Structures |
| 264 | 275 |
@ingroup datas |
| 265 | 276 |
\brief Auxiliary data structures implemented in LEMON. |
| 266 | 277 |
|
| 267 |
This group |
|
| 278 |
This group contains some data structures implemented in LEMON in |
|
| 268 | 279 |
order to make it easier to implement combinatorial algorithms. |
| 269 | 280 |
*/ |
| 270 | 281 |
|
| 271 | 282 |
/** |
| 283 |
@defgroup geomdat Geometric Data Structures |
|
| 284 |
@ingroup auxdat |
|
| 285 |
\brief Geometric data structures implemented in LEMON. |
|
| 286 |
|
|
| 287 |
This group contains geometric data structures implemented in LEMON. |
|
| 288 |
|
|
| 289 |
- \ref lemon::dim2::Point "dim2::Point" implements a two dimensional |
|
| 290 |
vector with the usual operations. |
|
| 291 |
- \ref lemon::dim2::Box "dim2::Box" can be used to determine the |
|
| 292 |
rectangular bounding box of a set of \ref lemon::dim2::Point |
|
| 293 |
"dim2::Point"'s. |
|
| 294 |
*/ |
|
| 295 |
|
|
| 296 |
/** |
|
| 297 |
@defgroup matrices Matrices |
|
| 298 |
@ingroup auxdat |
|
| 299 |
\brief Two dimensional data storages implemented in LEMON. |
|
| 300 |
|
|
| 301 |
This group contains two dimensional data storages implemented in LEMON. |
|
| 302 |
*/ |
|
| 303 |
|
|
| 304 |
/** |
|
| 272 | 305 |
@defgroup algs Algorithms |
| 273 |
\brief This group |
|
| 306 |
\brief This group contains the several algorithms |
|
| 274 | 307 |
implemented in LEMON. |
| 275 | 308 |
|
| 276 |
This group |
|
| 309 |
This group contains the several algorithms |
|
| 277 | 310 |
implemented in LEMON. |
| 278 | 311 |
*/ |
| 279 | 312 |
|
| 280 | 313 |
/** |
| 281 | 314 |
@defgroup search Graph Search |
| 282 | 315 |
@ingroup algs |
| 283 | 316 |
\brief Common graph search algorithms. |
| 284 | 317 |
|
| 285 |
This group describes the common graph search algorithms, namely |
|
| 286 |
\e breadth-first \e search (BFS) and \e depth-first \e search (DFS). |
|
| 318 |
This group contains the common graph search algorithms, namely |
|
| 319 |
\e breadth-first \e search (BFS) and \e depth-first \e search (DFS) |
|
| 320 |
\ref clrs01algorithms. |
|
| 287 | 321 |
*/ |
| 288 | 322 |
|
| 289 | 323 |
/** |
| 290 | 324 |
@defgroup shortest_path Shortest Path Algorithms |
| 291 | 325 |
@ingroup algs |
| 292 | 326 |
\brief Algorithms for finding shortest paths. |
| 293 | 327 |
|
| 294 |
This group |
|
| 328 |
This group contains the algorithms for finding shortest paths in digraphs |
|
| 329 |
\ref clrs01algorithms. |
|
| 295 | 330 |
|
| 296 | 331 |
- \ref Dijkstra algorithm for finding shortest paths from a source node |
| 297 | 332 |
when all arc lengths are non-negative. |
| 298 | 333 |
- \ref BellmanFord "Bellman-Ford" algorithm for finding shortest paths |
| 299 | 334 |
from a source node when arc lenghts can be either positive or negative, |
| 300 | 335 |
but the digraph should not contain directed cycles with negative total |
| 301 | 336 |
length. |
| 302 | 337 |
- \ref FloydWarshall "Floyd-Warshall" and \ref Johnson "Johnson" algorithms |
| 303 | 338 |
for solving the \e all-pairs \e shortest \e paths \e problem when arc |
| 304 | 339 |
lenghts can be either positive or negative, but the digraph should |
| 305 | 340 |
not contain directed cycles with negative total length. |
| 306 | 341 |
- \ref Suurballe A successive shortest path algorithm for finding |
| 307 | 342 |
arc-disjoint paths between two nodes having minimum total length. |
| 308 | 343 |
*/ |
| 309 | 344 |
|
| 310 | 345 |
/** |
| 346 |
@defgroup spantree Minimum Spanning Tree Algorithms |
|
| 347 |
@ingroup algs |
|
| 348 |
\brief Algorithms for finding minimum cost spanning trees and arborescences. |
|
| 349 |
|
|
| 350 |
This group contains the algorithms for finding minimum cost spanning |
|
| 351 |
trees and arborescences \ref clrs01algorithms. |
|
| 352 |
*/ |
|
| 353 |
|
|
| 354 |
/** |
|
| 311 | 355 |
@defgroup max_flow Maximum Flow Algorithms |
| 312 | 356 |
@ingroup algs |
| 313 | 357 |
\brief Algorithms for finding maximum flows. |
| 314 | 358 |
|
| 315 |
This group describes the algorithms for finding maximum flows and |
|
| 316 |
feasible circulations. |
|
| 359 |
This group contains the algorithms for finding maximum flows and |
|
| 360 |
feasible circulations \ref clrs01algorithms, \ref amo93networkflows. |
|
| 317 | 361 |
|
| 318 | 362 |
The \e maximum \e flow \e problem is to find a flow of maximum value between |
| 319 | 363 |
a single source and a single target. Formally, there is a \f$G=(V,A)\f$ |
| 320 |
digraph, a \f$cap:A\rightarrow\mathbf{R}^+_0\f$ capacity function and
|
|
| 364 |
digraph, a \f$cap: A\rightarrow\mathbf{R}^+_0\f$ capacity function and
|
|
| 321 | 365 |
\f$s, t \in V\f$ source and target nodes. |
| 322 |
A maximum flow is an \f$f:A\rightarrow\mathbf{R}^+_0\f$ solution of the
|
|
| 366 |
A maximum flow is an \f$f: A\rightarrow\mathbf{R}^+_0\f$ solution of the
|
|
| 323 | 367 |
following optimization problem. |
| 324 | 368 |
|
| 325 |
\f[ \max\sum_{a\in\delta_{out}(s)}f(a) - \sum_{a\in\delta_{in}(s)}f(a) \f]
|
|
| 326 |
\f[ \sum_{a\in\delta_{out}(v)} f(a) = \sum_{a\in\delta_{in}(v)} f(a)
|
|
| 327 |
\qquad \forall v\in V\setminus\{s,t\} \f]
|
|
| 328 |
\f[ 0 \leq f(a) \leq cap(a) \qquad \forall a\in A \f] |
|
| 369 |
\f[ \max\sum_{sv\in A} f(sv) - \sum_{vs\in A} f(vs) \f]
|
|
| 370 |
\f[ \sum_{uv\in A} f(uv) = \sum_{vu\in A} f(vu)
|
|
| 371 |
\quad \forall u\in V\setminus\{s,t\} \f]
|
|
| 372 |
\f[ 0 \leq f(uv) \leq cap(uv) \quad \forall uv\in A \f] |
|
| 329 | 373 |
|
| 330 | 374 |
LEMON contains several algorithms for solving maximum flow problems: |
| 331 |
- \ref EdmondsKarp Edmonds-Karp algorithm. |
|
| 332 |
- \ref Preflow Goldberg-Tarjan's preflow push-relabel algorithm. |
|
| 333 |
- \ref DinitzSleatorTarjan Dinitz's blocking flow algorithm with dynamic trees. |
|
| 334 |
- \ref GoldbergTarjan Preflow push-relabel algorithm with dynamic trees. |
|
| 375 |
- \ref EdmondsKarp Edmonds-Karp algorithm |
|
| 376 |
\ref edmondskarp72theoretical. |
|
| 377 |
- \ref Preflow Goldberg-Tarjan's preflow push-relabel algorithm |
|
| 378 |
\ref goldberg88newapproach. |
|
| 379 |
- \ref DinitzSleatorTarjan Dinitz's blocking flow algorithm with dynamic trees |
|
| 380 |
\ref dinic70algorithm, \ref sleator83dynamic. |
|
| 381 |
- \ref GoldbergTarjan !Preflow push-relabel algorithm with dynamic trees |
|
| 382 |
\ref goldberg88newapproach, \ref sleator83dynamic. |
|
| 335 | 383 |
|
| 336 |
In most cases the \ref Preflow |
|
| 384 |
In most cases the \ref Preflow algorithm provides the |
|
| 337 | 385 |
fastest method for computing a maximum flow. All implementations |
| 338 |
provides functions to also query the minimum cut, which is the dual |
|
| 339 |
problem of the maximum flow. |
|
| 386 |
also provide functions to query the minimum cut, which is the dual |
|
| 387 |
problem of maximum flow. |
|
| 388 |
|
|
| 389 |
\ref Circulation is a preflow push-relabel algorithm implemented directly |
|
| 390 |
for finding feasible circulations, which is a somewhat different problem, |
|
| 391 |
but it is strongly related to maximum flow. |
|
| 392 |
For more information, see \ref Circulation. |
|
| 340 | 393 |
*/ |
| 341 | 394 |
|
| 342 | 395 |
/** |
| 343 |
@defgroup |
|
| 396 |
@defgroup min_cost_flow_algs Minimum Cost Flow Algorithms |
|
| 344 | 397 |
@ingroup algs |
| 345 | 398 |
|
| 346 | 399 |
\brief Algorithms for finding minimum cost flows and circulations. |
| 347 | 400 |
|
| 348 |
This group describes the algorithms for finding minimum cost flows and |
|
| 349 |
circulations. |
|
| 401 |
This group contains the algorithms for finding minimum cost flows and |
|
| 402 |
circulations \ref amo93networkflows. For more information about this |
|
| 403 |
problem and its dual solution, see \ref min_cost_flow |
|
| 404 |
"Minimum Cost Flow Problem". |
|
| 350 | 405 |
|
| 351 |
The \e minimum \e cost \e flow \e problem is to find a feasible flow of |
|
| 352 |
minimum total cost from a set of supply nodes to a set of demand nodes |
|
| 353 |
in a network with capacity constraints and arc costs. |
|
| 354 |
Formally, let \f$G=(V,A)\f$ be a digraph, |
|
| 355 |
\f$lower, upper: A\rightarrow\mathbf{Z}^+_0\f$ denote the lower and
|
|
| 356 |
upper bounds for the flow values on the arcs, |
|
| 357 |
\f$cost: A\rightarrow\mathbf{Z}^+_0\f$ denotes the cost per unit flow
|
|
| 358 |
on the arcs, and |
|
| 359 |
\f$supply: V\rightarrow\mathbf{Z}\f$ denotes the supply/demand values
|
|
| 360 |
of the nodes. |
|
| 361 |
A minimum cost flow is an \f$f:A\rightarrow\mathbf{R}^+_0\f$ solution of
|
|
| 362 |
the following optimization problem. |
|
| 406 |
LEMON contains several algorithms for this problem. |
|
| 407 |
- \ref NetworkSimplex Primal Network Simplex algorithm with various |
|
| 408 |
pivot strategies \ref dantzig63linearprog, \ref kellyoneill91netsimplex. |
|
| 409 |
- \ref CostScaling Push-Relabel and Augment-Relabel algorithms based on |
|
| 410 |
cost scaling \ref goldberg90approximation, \ref goldberg97efficient, |
|
| 411 |
\ref bunnagel98efficient. |
|
| 412 |
- \ref CapacityScaling Successive Shortest %Path algorithm with optional |
|
| 413 |
capacity scaling \ref edmondskarp72theoretical. |
|
| 414 |
- \ref CancelAndTighten The Cancel and Tighten algorithm |
|
| 415 |
\ref goldberg89cyclecanceling. |
|
| 416 |
- \ref CycleCanceling Cycle-Canceling algorithms |
|
| 417 |
\ref klein67primal, \ref goldberg89cyclecanceling. |
|
| 363 | 418 |
|
| 364 |
\f[ \min\sum_{a\in A} f(a) cost(a) \f]
|
|
| 365 |
\f[ \sum_{a\in\delta_{out}(v)} f(a) - \sum_{a\in\delta_{in}(v)} f(a) =
|
|
| 366 |
supply(v) \qquad \forall v\in V \f] |
|
| 367 |
\f[ lower(a) \leq f(a) \leq upper(a) \qquad \forall a\in A \f] |
|
| 368 |
|
|
| 369 |
LEMON contains several algorithms for solving minimum cost flow problems: |
|
| 370 |
- \ref CycleCanceling Cycle-canceling algorithms. |
|
| 371 |
- \ref CapacityScaling Successive shortest path algorithm with optional |
|
| 372 |
capacity scaling. |
|
| 373 |
- \ref CostScaling Push-relabel and augment-relabel algorithms based on |
|
| 374 |
cost scaling. |
|
| 375 |
- \ref NetworkSimplex Primal network simplex algorithm with various |
|
| 376 |
|
|
| 419 |
In general NetworkSimplex is the most efficient implementation, |
|
| 420 |
but in special cases other algorithms could be faster. |
|
| 421 |
For example, if the total supply and/or capacities are rather small, |
|
| 422 |
CapacityScaling is usually the fastest algorithm (without effective scaling). |
|
| 377 | 423 |
*/ |
| 378 | 424 |
|
| 379 | 425 |
/** |
| 380 | 426 |
@defgroup min_cut Minimum Cut Algorithms |
| 381 | 427 |
@ingroup algs |
| 382 | 428 |
|
| 383 | 429 |
\brief Algorithms for finding minimum cut in graphs. |
| 384 | 430 |
|
| 385 |
This group |
|
| 431 |
This group contains the algorithms for finding minimum cut in graphs. |
|
| 386 | 432 |
|
| 387 | 433 |
The \e minimum \e cut \e problem is to find a non-empty and non-complete |
| 388 | 434 |
\f$X\f$ subset of the nodes with minimum overall capacity on |
| 389 | 435 |
outgoing arcs. Formally, there is a \f$G=(V,A)\f$ digraph, a |
| 390 | 436 |
\f$cap: A\rightarrow\mathbf{R}^+_0\f$ capacity function. The minimum
|
| 391 | 437 |
cut is the \f$X\f$ solution of the next optimization problem: |
| 392 | 438 |
|
| 393 | 439 |
\f[ \min_{X \subset V, X\not\in \{\emptyset, V\}}
|
| 394 |
\sum_{uv\in A
|
|
| 440 |
\sum_{uv\in A: u\in X, v\not\in X}cap(uv) \f]
|
|
| 395 | 441 |
|
| 396 | 442 |
LEMON contains several algorithms related to minimum cut problems: |
| 397 | 443 |
|
| 398 | 444 |
- \ref HaoOrlin "Hao-Orlin algorithm" for calculating minimum cut |
| 399 | 445 |
in directed graphs. |
| 400 | 446 |
- \ref NagamochiIbaraki "Nagamochi-Ibaraki algorithm" for |
| 401 | 447 |
calculating minimum cut in undirected graphs. |
| 402 |
- \ref |
|
| 448 |
- \ref GomoryHu "Gomory-Hu tree computation" for calculating |
|
| 403 | 449 |
all-pairs minimum cut in undirected graphs. |
| 404 | 450 |
|
| 405 | 451 |
If you want to find minimum cut just between two distinict nodes, |
| 406 | 452 |
see the \ref max_flow "maximum flow problem". |
| 407 | 453 |
*/ |
| 408 | 454 |
|
| 409 | 455 |
/** |
| 410 |
@defgroup |
|
| 456 |
@defgroup min_mean_cycle Minimum Mean Cycle Algorithms |
|
| 411 | 457 |
@ingroup algs |
| 412 |
\brief Algorithms for |
|
| 458 |
\brief Algorithms for finding minimum mean cycles. |
|
| 413 | 459 |
|
| 414 |
This group describes the algorithms for discovering the graph properties |
|
| 415 |
like connectivity, bipartiteness, euler property, simplicity etc. |
|
| 460 |
This group contains the algorithms for finding minimum mean cycles |
|
| 461 |
\ref clrs01algorithms, \ref amo93networkflows. |
|
| 416 | 462 |
|
| 417 |
\image html edge_biconnected_components.png |
|
| 418 |
\image latex edge_biconnected_components.eps "bi-edge-connected components" width=\textwidth |
|
| 419 |
|
|
| 463 |
The \e minimum \e mean \e cycle \e problem is to find a directed cycle |
|
| 464 |
of minimum mean length (cost) in a digraph. |
|
| 465 |
The mean length of a cycle is the average length of its arcs, i.e. the |
|
| 466 |
ratio between the total length of the cycle and the number of arcs on it. |
|
| 420 | 467 |
|
| 421 |
/** |
|
| 422 |
@defgroup planar Planarity Embedding and Drawing |
|
| 423 |
@ingroup algs |
|
| 424 |
\brief Algorithms for planarity checking, embedding and drawing |
|
| 468 |
This problem has an important connection to \e conservative \e length |
|
| 469 |
\e functions, too. A length function on the arcs of a digraph is called |
|
| 470 |
conservative if and only if there is no directed cycle of negative total |
|
| 471 |
length. For an arbitrary length function, the negative of the minimum |
|
| 472 |
cycle mean is the smallest \f$\epsilon\f$ value so that increasing the |
|
| 473 |
arc lengths uniformly by \f$\epsilon\f$ results in a conservative length |
|
| 474 |
function. |
|
| 425 | 475 |
|
| 426 |
This group describes the algorithms for planarity checking, |
|
| 427 |
embedding and drawing. |
|
| 476 |
LEMON contains three algorithms for solving the minimum mean cycle problem: |
|
| 477 |
- \ref Karp "Karp"'s original algorithm \ref amo93networkflows, |
|
| 478 |
\ref dasdan98minmeancycle. |
|
| 479 |
- \ref HartmannOrlin "Hartmann-Orlin"'s algorithm, which is an improved |
|
| 480 |
version of Karp's algorithm \ref dasdan98minmeancycle. |
|
| 481 |
- \ref Howard "Howard"'s policy iteration algorithm |
|
| 482 |
\ref dasdan98minmeancycle. |
|
| 428 | 483 |
|
| 429 |
\image html planar.png |
|
| 430 |
\image latex planar.eps "Plane graph" width=\textwidth |
|
| 484 |
In practice, the Howard algorithm proved to be by far the most efficient |
|
| 485 |
one, though the best known theoretical bound on its running time is |
|
| 486 |
exponential. |
|
| 487 |
Both Karp and HartmannOrlin algorithms run in time O(ne) and use space |
|
| 488 |
O(n<sup>2</sup>+e), but the latter one is typically faster due to the |
|
| 489 |
applied early termination scheme. |
|
| 431 | 490 |
*/ |
| 432 | 491 |
|
| 433 | 492 |
/** |
| 434 | 493 |
@defgroup matching Matching Algorithms |
| 435 | 494 |
@ingroup algs |
| 436 | 495 |
\brief Algorithms for finding matchings in graphs and bipartite graphs. |
| 437 | 496 |
|
| 438 |
This group contains |
|
| 497 |
This group contains the algorithms for calculating |
|
| 439 | 498 |
matchings in graphs and bipartite graphs. The general matching problem is |
| 440 |
finding a subset of the |
|
| 499 |
finding a subset of the edges for which each node has at most one incident |
|
| 500 |
edge. |
|
| 441 | 501 |
|
| 442 | 502 |
There are several different algorithms for calculate matchings in |
| 443 | 503 |
graphs. The matching problems in bipartite graphs are generally |
| 444 | 504 |
easier than in general graphs. The goal of the matching optimization |
| 445 | 505 |
can be finding maximum cardinality, maximum weight or minimum cost |
| 446 | 506 |
matching. The search can be constrained to find perfect or |
| 447 | 507 |
maximum cardinality matching. |
| 448 | 508 |
|
| 449 | 509 |
The matching algorithms implemented in LEMON: |
| 450 | 510 |
- \ref MaxBipartiteMatching Hopcroft-Karp augmenting path algorithm |
| 451 | 511 |
for calculating maximum cardinality matching in bipartite graphs. |
| 452 | 512 |
- \ref PrBipartiteMatching Push-relabel algorithm |
| 453 | 513 |
for calculating maximum cardinality matching in bipartite graphs. |
| 454 | 514 |
- \ref MaxWeightedBipartiteMatching |
| 455 | 515 |
Successive shortest path algorithm for calculating maximum weighted |
| 456 | 516 |
matching and maximum weighted bipartite matching in bipartite graphs. |
| 457 | 517 |
- \ref MinCostMaxBipartiteMatching |
| 458 | 518 |
Successive shortest path algorithm for calculating minimum cost maximum |
| 459 | 519 |
matching in bipartite graphs. |
| 460 | 520 |
- \ref MaxMatching Edmond's blossom shrinking algorithm for calculating |
| 461 | 521 |
maximum cardinality matching in general graphs. |
| 462 | 522 |
- \ref MaxWeightedMatching Edmond's blossom shrinking algorithm for calculating |
| 463 | 523 |
maximum weighted matching in general graphs. |
| 464 | 524 |
- \ref MaxWeightedPerfectMatching |
| 465 | 525 |
Edmond's blossom shrinking algorithm for calculating maximum weighted |
| 466 | 526 |
perfect matching in general graphs. |
| 467 | 527 |
|
| 468 | 528 |
\image html bipartite_matching.png |
| 469 | 529 |
\image latex bipartite_matching.eps "Bipartite Matching" width=\textwidth |
| 470 | 530 |
*/ |
| 471 | 531 |
|
| 472 | 532 |
/** |
| 473 |
@defgroup |
|
| 533 |
@defgroup graph_properties Connectivity and Other Graph Properties |
|
| 474 | 534 |
@ingroup algs |
| 475 |
\brief Algorithms for |
|
| 535 |
\brief Algorithms for discovering the graph properties |
|
| 476 | 536 |
|
| 477 |
This group describes the algorithms for finding a minimum cost spanning |
|
| 478 |
tree in a graph. |
|
| 537 |
This group contains the algorithms for discovering the graph properties |
|
| 538 |
like connectivity, bipartiteness, euler property, simplicity etc. |
|
| 539 |
|
|
| 540 |
\image html connected_components.png |
|
| 541 |
\image latex connected_components.eps "Connected components" width=\textwidth |
|
| 542 |
*/ |
|
| 543 |
|
|
| 544 |
/** |
|
| 545 |
@defgroup planar Planarity Embedding and Drawing |
|
| 546 |
@ingroup algs |
|
| 547 |
\brief Algorithms for planarity checking, embedding and drawing |
|
| 548 |
|
|
| 549 |
This group contains the algorithms for planarity checking, |
|
| 550 |
embedding and drawing. |
|
| 551 |
|
|
| 552 |
\image html planar.png |
|
| 553 |
\image latex planar.eps "Plane graph" width=\textwidth |
|
| 554 |
*/ |
|
| 555 |
|
|
| 556 |
/** |
|
| 557 |
@defgroup approx Approximation Algorithms |
|
| 558 |
@ingroup algs |
|
| 559 |
\brief Approximation algorithms. |
|
| 560 |
|
|
| 561 |
This group contains the approximation and heuristic algorithms |
|
| 562 |
implemented in LEMON. |
|
| 479 | 563 |
*/ |
| 480 | 564 |
|
| 481 | 565 |
/** |
| 482 | 566 |
@defgroup auxalg Auxiliary Algorithms |
| 483 | 567 |
@ingroup algs |
| 484 | 568 |
\brief Auxiliary algorithms implemented in LEMON. |
| 485 | 569 |
|
| 486 |
This group |
|
| 570 |
This group contains some algorithms implemented in LEMON |
|
| 487 | 571 |
in order to make it easier to implement complex algorithms. |
| 488 | 572 |
*/ |
| 489 | 573 |
|
| 490 | 574 |
/** |
| 491 |
@defgroup approx Approximation Algorithms |
|
| 492 |
@ingroup algs |
|
| 493 |
|
|
| 575 |
@defgroup gen_opt_group General Optimization Tools |
|
| 576 |
\brief This group contains some general optimization frameworks |
|
| 577 |
implemented in LEMON. |
|
| 494 | 578 |
|
| 495 |
This group |
|
| 579 |
This group contains some general optimization frameworks |
|
| 496 | 580 |
implemented in LEMON. |
| 497 | 581 |
*/ |
| 498 | 582 |
|
| 499 | 583 |
/** |
| 500 |
@defgroup gen_opt_group General Optimization Tools |
|
| 501 |
\brief This group describes some general optimization frameworks |
|
| 502 |
|
|
| 584 |
@defgroup lp_group LP and MIP Solvers |
|
| 585 |
@ingroup gen_opt_group |
|
| 586 |
\brief LP and MIP solver interfaces for LEMON. |
|
| 503 | 587 |
|
| 504 |
This group describes some general optimization frameworks |
|
| 505 |
implemented in LEMON. |
|
| 506 |
|
|
| 588 |
This group contains LP and MIP solver interfaces for LEMON. |
|
| 589 |
Various LP solvers could be used in the same manner with this |
|
| 590 |
high-level interface. |
|
| 507 | 591 |
|
| 508 |
/** |
|
| 509 |
@defgroup lp_group Lp and Mip Solvers |
|
| 510 |
@ingroup gen_opt_group |
|
| 511 |
\brief Lp and Mip solver interfaces for LEMON. |
|
| 512 |
|
|
| 513 |
This group describes Lp and Mip solver interfaces for LEMON. The |
|
| 514 |
various LP solvers could be used in the same manner with this |
|
| 515 |
interface. |
|
| 592 |
The currently supported solvers are \ref glpk, \ref clp, \ref cbc, |
|
| 593 |
\ref cplex, \ref soplex. |
|
| 516 | 594 |
*/ |
| 517 | 595 |
|
| 518 | 596 |
/** |
| 519 | 597 |
@defgroup lp_utils Tools for Lp and Mip Solvers |
| 520 | 598 |
@ingroup lp_group |
| 521 | 599 |
\brief Helper tools to the Lp and Mip solvers. |
| 522 | 600 |
|
| 523 | 601 |
This group adds some helper tools to general optimization framework |
| 524 | 602 |
implemented in LEMON. |
| 525 | 603 |
*/ |
| 526 | 604 |
|
| 527 | 605 |
/** |
| 528 | 606 |
@defgroup metah Metaheuristics |
| 529 | 607 |
@ingroup gen_opt_group |
| 530 | 608 |
\brief Metaheuristics for LEMON library. |
| 531 | 609 |
|
| 532 |
This group |
|
| 610 |
This group contains some metaheuristic optimization tools. |
|
| 533 | 611 |
*/ |
| 534 | 612 |
|
| 535 | 613 |
/** |
| 536 | 614 |
@defgroup utils Tools and Utilities |
| 537 | 615 |
\brief Tools and utilities for programming in LEMON |
| 538 | 616 |
|
| 539 | 617 |
Tools and utilities for programming in LEMON. |
| 540 | 618 |
*/ |
| 541 | 619 |
|
| 542 | 620 |
/** |
| 543 | 621 |
@defgroup gutils Basic Graph Utilities |
| 544 | 622 |
@ingroup utils |
| 545 | 623 |
\brief Simple basic graph utilities. |
| 546 | 624 |
|
| 547 |
This group |
|
| 625 |
This group contains some simple basic graph utilities. |
|
| 548 | 626 |
*/ |
| 549 | 627 |
|
| 550 | 628 |
/** |
| 551 | 629 |
@defgroup misc Miscellaneous Tools |
| 552 | 630 |
@ingroup utils |
| 553 | 631 |
\brief Tools for development, debugging and testing. |
| 554 | 632 |
|
| 555 |
This group |
|
| 633 |
This group contains several useful tools for development, |
|
| 556 | 634 |
debugging and testing. |
| 557 | 635 |
*/ |
| 558 | 636 |
|
| 559 | 637 |
/** |
| 560 | 638 |
@defgroup timecount Time Measuring and Counting |
| 561 | 639 |
@ingroup misc |
| 562 | 640 |
\brief Simple tools for measuring the performance of algorithms. |
| 563 | 641 |
|
| 564 |
This group |
|
| 642 |
This group contains simple tools for measuring the performance |
|
| 565 | 643 |
of algorithms. |
| 566 | 644 |
*/ |
| 567 | 645 |
|
| 568 | 646 |
/** |
| 569 | 647 |
@defgroup exceptions Exceptions |
| 570 | 648 |
@ingroup utils |
| 571 | 649 |
\brief Exceptions defined in LEMON. |
| 572 | 650 |
|
| 573 |
This group |
|
| 651 |
This group contains the exceptions defined in LEMON. |
|
| 574 | 652 |
*/ |
| 575 | 653 |
|
| 576 | 654 |
/** |
| 577 | 655 |
@defgroup io_group Input-Output |
| 578 | 656 |
\brief Graph Input-Output methods |
| 579 | 657 |
|
| 580 |
This group |
|
| 658 |
This group contains the tools for importing and exporting graphs |
|
| 581 | 659 |
and graph related data. Now it supports the \ref lgf-format |
| 582 | 660 |
"LEMON Graph Format", the \c DIMACS format and the encapsulated |
| 583 | 661 |
postscript (EPS) format. |
| 584 | 662 |
*/ |
| 585 | 663 |
|
| 586 | 664 |
/** |
| 587 | 665 |
@defgroup lemon_io LEMON Graph Format |
| 588 | 666 |
@ingroup io_group |
| 589 | 667 |
\brief Reading and writing LEMON Graph Format. |
| 590 | 668 |
|
| 591 |
This group |
|
| 669 |
This group contains methods for reading and writing |
|
| 592 | 670 |
\ref lgf-format "LEMON Graph Format". |
| 593 | 671 |
*/ |
| 594 | 672 |
|
| 595 | 673 |
/** |
| 596 | 674 |
@defgroup eps_io Postscript Exporting |
| 597 | 675 |
@ingroup io_group |
| 598 | 676 |
\brief General \c EPS drawer and graph exporter |
| 599 | 677 |
|
| 600 |
This group |
|
| 678 |
This group contains general \c EPS drawing methods and special |
|
| 601 | 679 |
graph exporting tools. |
| 602 | 680 |
*/ |
| 603 | 681 |
|
| 604 | 682 |
/** |
| 605 |
@defgroup dimacs_group DIMACS |
|
| 683 |
@defgroup dimacs_group DIMACS Format |
|
| 606 | 684 |
@ingroup io_group |
| 607 | 685 |
\brief Read and write files in DIMACS format |
| 608 | 686 |
|
| 609 | 687 |
Tools to read a digraph from or write it to a file in DIMACS format data. |
| 610 | 688 |
*/ |
| 611 | 689 |
|
| 612 | 690 |
/** |
| 613 | 691 |
@defgroup nauty_group NAUTY Format |
| 614 | 692 |
@ingroup io_group |
| 615 | 693 |
\brief Read \e Nauty format |
| 616 | 694 |
|
| 617 | 695 |
Tool to read graphs from \e Nauty format data. |
| 618 | 696 |
*/ |
| 619 | 697 |
|
| 620 | 698 |
/** |
| 621 | 699 |
@defgroup concept Concepts |
| 622 | 700 |
\brief Skeleton classes and concept checking classes |
| 623 | 701 |
|
| 624 |
This group |
|
| 702 |
This group contains the data/algorithm skeletons and concept checking |
|
| 625 | 703 |
classes implemented in LEMON. |
| 626 | 704 |
|
| 627 | 705 |
The purpose of the classes in this group is fourfold. |
| 628 | 706 |
|
| 629 | 707 |
- These classes contain the documentations of the %concepts. In order |
| 630 | 708 |
to avoid document multiplications, an implementation of a concept |
| 631 | 709 |
simply refers to the corresponding concept class. |
| 632 | 710 |
|
| 633 | 711 |
- These classes declare every functions, <tt>typedef</tt>s etc. an |
| 634 | 712 |
implementation of the %concepts should provide, however completely |
| 635 | 713 |
without implementations and real data structures behind the |
| 636 | 714 |
interface. On the other hand they should provide nothing else. All |
| 637 | 715 |
the algorithms working on a data structure meeting a certain concept |
| 638 | 716 |
should compile with these classes. (Though it will not run properly, |
| 639 | 717 |
of course.) In this way it is easily to check if an algorithm |
| 640 | 718 |
doesn't use any extra feature of a certain implementation. |
| 641 | 719 |
|
| 642 | 720 |
- The concept descriptor classes also provide a <em>checker class</em> |
| 643 | 721 |
that makes it possible to check whether a certain implementation of a |
| 644 | 722 |
concept indeed provides all the required features. |
| 645 | 723 |
|
| 646 | 724 |
- Finally, They can serve as a skeleton of a new implementation of a concept. |
| 647 | 725 |
*/ |
| 648 | 726 |
|
| 649 | 727 |
/** |
| 650 | 728 |
@defgroup graph_concepts Graph Structure Concepts |
| 651 | 729 |
@ingroup concept |
| 652 | 730 |
\brief Skeleton and concept checking classes for graph structures |
| 653 | 731 |
|
| 654 |
This group describes the skeletons and concept checking classes of LEMON's |
|
| 655 |
graph structures and helper classes used to implement these. |
|
| 732 |
This group contains the skeletons and concept checking classes of |
|
| 733 |
graph structures. |
|
| 656 | 734 |
*/ |
| 657 | 735 |
|
| 658 | 736 |
/** |
| 659 | 737 |
@defgroup map_concepts Map Concepts |
| 660 | 738 |
@ingroup concept |
| 661 | 739 |
\brief Skeleton and concept checking classes for maps |
| 662 | 740 |
|
| 663 |
This group describes the skeletons and concept checking classes of maps. |
|
| 664 |
*/ |
|
| 665 |
|
|
| 666 |
/** |
|
| 667 |
\anchor demoprograms |
|
| 668 |
|
|
| 669 |
@defgroup demos Demo Programs |
|
| 670 |
|
|
| 671 |
Some demo programs are listed here. Their full source codes can be found in |
|
| 672 |
the \c demo subdirectory of the source tree. |
|
| 673 |
|
|
| 674 |
It order to compile them, use <tt>--enable-demo</tt> configure option when |
|
| 675 |
|
|
| 741 |
This group contains the skeletons and concept checking classes of maps. |
|
| 676 | 742 |
*/ |
| 677 | 743 |
|
| 678 | 744 |
/** |
| 679 | 745 |
@defgroup tools Standalone Utility Applications |
| 680 | 746 |
|
| 681 | 747 |
Some utility applications are listed here. |
| 682 | 748 |
|
| 683 | 749 |
The standard compilation procedure (<tt>./configure;make</tt>) will compile |
| 684 | 750 |
them, as well. |
| 685 | 751 |
*/ |
| 686 | 752 |
|
| 753 |
/** |
|
| 754 |
\anchor demoprograms |
|
| 755 |
|
|
| 756 |
@defgroup demos Demo Programs |
|
| 757 |
|
|
| 758 |
Some demo programs are listed here. Their full source codes can be found in |
|
| 759 |
the \c demo subdirectory of the source tree. |
|
| 760 |
|
|
| 761 |
In order to compile them, use the <tt>make demo</tt> or the |
|
| 762 |
<tt>make check</tt> commands. |
|
| 763 |
*/ |
|
| 764 |
|
|
| 687 | 765 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
/** |
| 20 | 20 |
\mainpage LEMON Documentation |
| 21 | 21 |
|
| 22 | 22 |
\section intro Introduction |
| 23 | 23 |
|
| 24 |
\subsection whatis What is LEMON |
|
| 25 |
|
|
| 26 |
LEMON stands for |
|
| 27 |
<b>L</b>ibrary of <b>E</b>fficient <b>M</b>odels |
|
| 28 |
and <b>O</b>ptimization in <b>N</b>etworks. |
|
| 29 |
It is a C++ template |
|
| 30 |
library aimed at combinatorial optimization tasks which |
|
| 31 |
often involve in working |
|
| 32 |
|
|
| 24 |
<b>LEMON</b> stands for <i><b>L</b>ibrary for <b>E</b>fficient <b>M</b>odeling |
|
| 25 |
and <b>O</b>ptimization in <b>N</b>etworks</i>. |
|
| 26 |
It is a C++ template library providing efficient implementation of common |
|
| 27 |
data structures and algorithms with focus on combinatorial optimization |
|
| 28 |
problems in graphs and networks. |
|
| 33 | 29 |
|
| 34 | 30 |
<b> |
| 35 | 31 |
LEMON is an <a class="el" href="http://opensource.org/">open source</a> |
| 36 | 32 |
project. |
| 37 | 33 |
You are free to use it in your commercial or |
| 38 | 34 |
non-commercial applications under very permissive |
| 39 | 35 |
\ref license "license terms". |
| 40 | 36 |
</b> |
| 41 | 37 |
|
| 42 |
|
|
| 38 |
The project is maintained by the |
|
| 39 |
<a href="http://www.cs.elte.hu/egres/">Egerváry Research Group on |
|
| 40 |
Combinatorial Optimization</a> \ref egres |
|
| 41 |
at the Operations Research Department of the |
|
| 42 |
<a href="http://www.elte.hu/">Eötvös Loránd University, |
|
| 43 |
Budapest</a>, Hungary. |
|
| 44 |
LEMON is also a member of the <a href="http://www.coin-or.org/">COIN-OR</a> |
|
| 45 |
initiative \ref coinor. |
|
| 43 | 46 |
|
| 44 |
If you want to get a quick start and see the most important features then |
|
| 45 |
take a look at our \ref quicktour |
|
| 46 |
|
|
| 47 |
\section howtoread How to Read the Documentation |
|
| 47 | 48 |
|
| 48 |
If you already feel like using our library, see the page that tells you |
|
| 49 |
\ref getstart "How to start using LEMON". |
|
| 49 |
If you would like to get to know the library, see |
|
| 50 |
<a class="el" href="http://lemon.cs.elte.hu/pub/tutorial/">LEMON Tutorial</a>. |
|
| 50 | 51 |
|
| 51 |
If you |
|
| 52 |
want to see how LEMON works, see |
|
| 53 |
some \ref demoprograms "demo programs". |
|
| 54 |
|
|
| 55 |
If you know what you are looking for then try to find it under the |
|
| 56 |
<a class="el" href="modules.html">Modules</a> |
|
| 57 |
|
|
| 52 |
If you know what you are looking for, then try to find it under the |
|
| 53 |
<a class="el" href="modules.html">Modules</a> section. |
|
| 58 | 54 |
|
| 59 | 55 |
If you are a user of the old (0.x) series of LEMON, please check out the |
| 60 | 56 |
\ref migration "Migration Guide" for the backward incompatibilities. |
| 61 | 57 |
*/ |
| 1 |
INCLUDE_DIRECTORIES( |
|
| 1 |
INCLUDE_DIRECTORIES( |
|
| 2 |
${PROJECT_SOURCE_DIR}
|
|
| 3 |
${PROJECT_BINARY_DIR}
|
|
| 4 |
) |
|
| 2 | 5 |
|
| 3 |
|
|
| 6 |
CONFIGURE_FILE( |
|
| 7 |
${CMAKE_CURRENT_SOURCE_DIR}/config.h.cmake
|
|
| 8 |
${CMAKE_CURRENT_BINARY_DIR}/config.h
|
|
| 9 |
) |
|
| 10 |
|
|
| 11 |
SET(LEMON_SOURCES |
|
| 4 | 12 |
arg_parser.cc |
| 5 | 13 |
base.cc |
| 6 | 14 |
color.cc |
| 7 |
|
|
| 15 |
lp_base.cc |
|
| 16 |
lp_skeleton.cc |
|
| 17 |
random.cc |
|
| 18 |
bits/windows.cc |
|
| 19 |
) |
|
| 20 |
|
|
| 21 |
IF(LEMON_HAVE_GLPK) |
|
| 22 |
SET(LEMON_SOURCES ${LEMON_SOURCES} glpk.cc)
|
|
| 23 |
INCLUDE_DIRECTORIES(${GLPK_INCLUDE_DIRS})
|
|
| 24 |
IF(WIN32) |
|
| 25 |
INSTALL(FILES ${GLPK_BIN_DIR}/glpk.dll DESTINATION bin)
|
|
| 26 |
INSTALL(FILES ${GLPK_BIN_DIR}/libltdl3.dll DESTINATION bin)
|
|
| 27 |
INSTALL(FILES ${GLPK_BIN_DIR}/zlib1.dll DESTINATION bin)
|
|
| 28 |
ENDIF() |
|
| 29 |
ENDIF() |
|
| 30 |
|
|
| 31 |
IF(LEMON_HAVE_CPLEX) |
|
| 32 |
SET(LEMON_SOURCES ${LEMON_SOURCES} cplex.cc)
|
|
| 33 |
INCLUDE_DIRECTORIES(${CPLEX_INCLUDE_DIRS})
|
|
| 34 |
ENDIF() |
|
| 35 |
|
|
| 36 |
IF(LEMON_HAVE_CLP) |
|
| 37 |
SET(LEMON_SOURCES ${LEMON_SOURCES} clp.cc)
|
|
| 38 |
INCLUDE_DIRECTORIES(${COIN_INCLUDE_DIRS})
|
|
| 39 |
ENDIF() |
|
| 40 |
|
|
| 41 |
IF(LEMON_HAVE_CBC) |
|
| 42 |
SET(LEMON_SOURCES ${LEMON_SOURCES} cbc.cc)
|
|
| 43 |
INCLUDE_DIRECTORIES(${COIN_INCLUDE_DIRS})
|
|
| 44 |
ENDIF() |
|
| 45 |
|
|
| 46 |
ADD_LIBRARY(lemon ${LEMON_SOURCES})
|
|
| 47 |
IF(UNIX) |
|
| 48 |
SET_TARGET_PROPERTIES(lemon PROPERTIES OUTPUT_NAME emon) |
|
| 49 |
ENDIF() |
|
| 8 | 50 |
|
| 9 | 51 |
INSTALL( |
| 10 | 52 |
TARGETS lemon |
| 11 | 53 |
ARCHIVE DESTINATION lib |
| 12 |
COMPONENT library |
|
| 54 |
COMPONENT library |
|
| 55 |
) |
|
| 13 | 56 |
|
| 14 | 57 |
INSTALL( |
| 15 | 58 |
DIRECTORY . bits concepts |
| 16 | 59 |
DESTINATION include/lemon |
| 17 | 60 |
COMPONENT headers |
| 18 |
FILES_MATCHING PATTERN "*.h" |
|
| 61 |
FILES_MATCHING PATTERN "*.h" |
|
| 62 |
) |
|
| 63 |
|
|
| 64 |
INSTALL( |
|
| 65 |
FILES ${CMAKE_CURRENT_BINARY_DIR}/config.h
|
|
| 66 |
DESTINATION include/lemon |
|
| 67 |
COMPONENT headers |
|
| 68 |
) |
| 1 | 1 |
EXTRA_DIST += \ |
| 2 | 2 |
lemon/lemon.pc.in \ |
| 3 |
lemon/CMakeLists.txt |
|
| 3 |
lemon/CMakeLists.txt \ |
|
| 4 |
lemon/config.h.cmake |
|
| 4 | 5 |
|
| 5 | 6 |
pkgconfig_DATA += lemon/lemon.pc |
| 6 | 7 |
|
| 7 | 8 |
lib_LTLIBRARIES += lemon/libemon.la |
| 8 | 9 |
|
| 9 | 10 |
lemon_libemon_la_SOURCES = \ |
| 10 | 11 |
lemon/arg_parser.cc \ |
| 11 | 12 |
lemon/base.cc \ |
| 12 | 13 |
lemon/color.cc \ |
| 13 | 14 |
lemon/lp_base.cc \ |
| 14 | 15 |
lemon/lp_skeleton.cc \ |
| 15 |
lemon/random.cc |
|
| 16 |
lemon/random.cc \ |
|
| 17 |
lemon/bits/windows.cc |
|
| 16 | 18 |
|
| 19 |
nodist_lemon_HEADERS = lemon/config.h |
|
| 17 | 20 |
|
| 18 | 21 |
lemon_libemon_la_CXXFLAGS = \ |
| 22 |
$(AM_CXXFLAGS) \ |
|
| 19 | 23 |
$(GLPK_CFLAGS) \ |
| 20 | 24 |
$(CPLEX_CFLAGS) \ |
| 21 | 25 |
$(SOPLEX_CXXFLAGS) \ |
| 22 |
$(CLP_CXXFLAGS) |
|
| 26 |
$(CLP_CXXFLAGS) \ |
|
| 27 |
$(CBC_CXXFLAGS) |
|
| 23 | 28 |
|
| 24 | 29 |
lemon_libemon_la_LDFLAGS = \ |
| 25 | 30 |
$(GLPK_LIBS) \ |
| 26 | 31 |
$(CPLEX_LIBS) \ |
| 27 | 32 |
$(SOPLEX_LIBS) \ |
| 28 |
$(CLP_LIBS) |
|
| 33 |
$(CLP_LIBS) \ |
|
| 34 |
$(CBC_LIBS) |
|
| 29 | 35 |
|
| 30 | 36 |
if HAVE_GLPK |
| 31 | 37 |
lemon_libemon_la_SOURCES += lemon/glpk.cc |
| 32 | 38 |
endif |
| 33 | 39 |
|
| 34 | 40 |
if HAVE_CPLEX |
| 35 | 41 |
lemon_libemon_la_SOURCES += lemon/cplex.cc |
| 36 | 42 |
endif |
| 37 | 43 |
|
| 38 | 44 |
if HAVE_SOPLEX |
| 39 | 45 |
lemon_libemon_la_SOURCES += lemon/soplex.cc |
| 40 | 46 |
endif |
| 41 | 47 |
|
| 42 | 48 |
if HAVE_CLP |
| 43 | 49 |
lemon_libemon_la_SOURCES += lemon/clp.cc |
| 44 | 50 |
endif |
| 45 | 51 |
|
| 52 |
if HAVE_CBC |
|
| 53 |
lemon_libemon_la_SOURCES += lemon/cbc.cc |
|
| 54 |
endif |
|
| 55 |
|
|
| 46 | 56 |
lemon_HEADERS += \ |
| 47 | 57 |
lemon/adaptors.h \ |
| 48 | 58 |
lemon/arg_parser.h \ |
| 49 | 59 |
lemon/assert.h \ |
| 60 |
lemon/bellman_ford.h \ |
|
| 50 | 61 |
lemon/bfs.h \ |
| 51 | 62 |
lemon/bin_heap.h \ |
| 63 |
lemon/binom_heap.h \ |
|
| 64 |
lemon/bucket_heap.h \ |
|
| 65 |
lemon/cbc.h \ |
|
| 52 | 66 |
lemon/circulation.h \ |
| 53 | 67 |
lemon/clp.h \ |
| 54 | 68 |
lemon/color.h \ |
| 55 | 69 |
lemon/concept_check.h \ |
| 70 |
lemon/connectivity.h \ |
|
| 56 | 71 |
lemon/counter.h \ |
| 57 | 72 |
lemon/core.h \ |
| 58 | 73 |
lemon/cplex.h \ |
| 59 | 74 |
lemon/dfs.h \ |
| 60 | 75 |
lemon/dijkstra.h \ |
| 61 | 76 |
lemon/dim2.h \ |
| 62 | 77 |
lemon/dimacs.h \ |
| 63 | 78 |
lemon/edge_set.h \ |
| 64 | 79 |
lemon/elevator.h \ |
| 65 | 80 |
lemon/error.h \ |
| 81 |
lemon/euler.h \ |
|
| 82 |
lemon/fib_heap.h \ |
|
| 83 |
lemon/fourary_heap.h \ |
|
| 66 | 84 |
lemon/full_graph.h \ |
| 67 | 85 |
lemon/glpk.h \ |
| 86 |
lemon/gomory_hu.h \ |
|
| 68 | 87 |
lemon/graph_to_eps.h \ |
| 69 | 88 |
lemon/grid_graph.h \ |
| 89 |
lemon/hartmann_orlin.h \ |
|
| 90 |
lemon/howard.h \ |
|
| 70 | 91 |
lemon/hypercube_graph.h \ |
| 92 |
lemon/karp.h \ |
|
| 93 |
lemon/kary_heap.h \ |
|
| 71 | 94 |
lemon/kruskal.h \ |
| 72 | 95 |
lemon/hao_orlin.h \ |
| 73 | 96 |
lemon/lgf_reader.h \ |
| 74 | 97 |
lemon/lgf_writer.h \ |
| 75 | 98 |
lemon/list_graph.h \ |
| 76 | 99 |
lemon/lp.h \ |
| 77 | 100 |
lemon/lp_base.h \ |
| 78 | 101 |
lemon/lp_skeleton.h \ |
| 79 |
lemon/list_graph.h \ |
|
| 80 | 102 |
lemon/maps.h \ |
| 103 |
lemon/matching.h \ |
|
| 81 | 104 |
lemon/math.h \ |
| 82 |
lemon/ |
|
| 105 |
lemon/min_cost_arborescence.h \ |
|
| 83 | 106 |
lemon/nauty_reader.h \ |
| 107 |
lemon/network_simplex.h \ |
|
| 108 |
lemon/pairing_heap.h \ |
|
| 84 | 109 |
lemon/path.h \ |
| 85 | 110 |
lemon/preflow.h \ |
| 111 |
lemon/radix_heap.h \ |
|
| 86 | 112 |
lemon/radix_sort.h \ |
| 87 | 113 |
lemon/random.h \ |
| 88 | 114 |
lemon/smart_graph.h \ |
| 89 | 115 |
lemon/soplex.h \ |
| 116 |
lemon/static_graph.h \ |
|
| 90 | 117 |
lemon/suurballe.h \ |
| 91 | 118 |
lemon/time_measure.h \ |
| 92 | 119 |
lemon/tolerance.h \ |
| 93 |
lemon/unionfind.h |
|
| 120 |
lemon/unionfind.h \ |
|
| 121 |
lemon/bits/windows.h |
|
| 94 | 122 |
|
| 95 | 123 |
bits_HEADERS += \ |
| 96 | 124 |
lemon/bits/alteration_notifier.h \ |
| 97 | 125 |
lemon/bits/array_map.h \ |
| 98 |
lemon/bits/base_extender.h \ |
|
| 99 | 126 |
lemon/bits/bezier.h \ |
| 100 | 127 |
lemon/bits/default_map.h \ |
| 101 | 128 |
lemon/bits/edge_set_extender.h \ |
| 102 | 129 |
lemon/bits/enable_if.h \ |
| 103 | 130 |
lemon/bits/graph_adaptor_extender.h \ |
| 104 | 131 |
lemon/bits/graph_extender.h \ |
| 105 | 132 |
lemon/bits/map_extender.h \ |
| 106 | 133 |
lemon/bits/path_dump.h \ |
| 107 | 134 |
lemon/bits/solver_bits.h \ |
| 108 | 135 |
lemon/bits/traits.h \ |
| 109 | 136 |
lemon/bits/variant.h \ |
| 110 | 137 |
lemon/bits/vector_map.h |
| 111 | 138 |
|
| 112 | 139 |
concept_HEADERS += \ |
| 113 | 140 |
lemon/concepts/digraph.h \ |
| 114 | 141 |
lemon/concepts/graph.h \ |
| 115 | 142 |
lemon/concepts/graph_components.h \ |
| 116 | 143 |
lemon/concepts/heap.h \ |
| 117 | 144 |
lemon/concepts/maps.h \ |
| 118 | 145 |
lemon/concepts/path.h |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_ADAPTORS_H |
| 20 | 20 |
#define LEMON_ADAPTORS_H |
| 21 | 21 |
|
| 22 | 22 |
/// \ingroup graph_adaptors |
| 23 | 23 |
/// \file |
| 24 | 24 |
/// \brief Adaptor classes for digraphs and graphs |
| 25 | 25 |
/// |
| 26 | 26 |
/// This file contains several useful adaptors for digraphs and graphs. |
| 27 | 27 |
|
| 28 | 28 |
#include <lemon/core.h> |
| 29 | 29 |
#include <lemon/maps.h> |
| 30 | 30 |
#include <lemon/bits/variant.h> |
| 31 | 31 |
|
| 32 | 32 |
#include <lemon/bits/graph_adaptor_extender.h> |
| 33 |
#include <lemon/bits/map_extender.h> |
|
| 33 | 34 |
#include <lemon/tolerance.h> |
| 34 | 35 |
|
| 35 | 36 |
#include <algorithm> |
| 36 | 37 |
|
| 37 | 38 |
namespace lemon {
|
| 38 | 39 |
|
| 39 |
|
|
| 40 |
#ifdef _MSC_VER |
|
| 41 |
#define LEMON_SCOPE_FIX(OUTER, NESTED) OUTER::NESTED |
|
| 42 |
#else |
|
| 43 |
#define LEMON_SCOPE_FIX(OUTER, NESTED) typename OUTER::template NESTED |
|
| 44 |
#endif |
|
| 45 |
|
|
| 46 |
template<typename DGR> |
|
| 40 | 47 |
class DigraphAdaptorBase {
|
| 41 | 48 |
public: |
| 42 |
typedef |
|
| 49 |
typedef DGR Digraph; |
|
| 43 | 50 |
typedef DigraphAdaptorBase Adaptor; |
| 44 |
typedef Digraph ParentDigraph; |
|
| 45 | 51 |
|
| 46 | 52 |
protected: |
| 47 |
|
|
| 53 |
DGR* _digraph; |
|
| 48 | 54 |
DigraphAdaptorBase() : _digraph(0) { }
|
| 49 |
void |
|
| 55 |
void initialize(DGR& digraph) { _digraph = &digraph; }
|
|
| 50 | 56 |
|
| 51 | 57 |
public: |
| 52 |
DigraphAdaptorBase(Digraph& digraph) : _digraph(&digraph) { }
|
|
| 53 |
|
|
| 54 |
typedef typename Digraph::Node Node; |
|
| 55 |
typedef typename Digraph::Arc Arc; |
|
| 58 |
DigraphAdaptorBase(DGR& digraph) : _digraph(&digraph) { }
|
|
| 59 |
|
|
| 60 |
typedef typename DGR::Node Node; |
|
| 61 |
typedef typename DGR::Arc Arc; |
|
| 56 | 62 |
|
| 57 | 63 |
void first(Node& i) const { _digraph->first(i); }
|
| 58 | 64 |
void first(Arc& i) const { _digraph->first(i); }
|
| 59 | 65 |
void firstIn(Arc& i, const Node& n) const { _digraph->firstIn(i, n); }
|
| 60 | 66 |
void firstOut(Arc& i, const Node& n ) const { _digraph->firstOut(i, n); }
|
| 61 | 67 |
|
| 62 | 68 |
void next(Node& i) const { _digraph->next(i); }
|
| 63 | 69 |
void next(Arc& i) const { _digraph->next(i); }
|
| 64 | 70 |
void nextIn(Arc& i) const { _digraph->nextIn(i); }
|
| 65 | 71 |
void nextOut(Arc& i) const { _digraph->nextOut(i); }
|
| 66 | 72 |
|
| 67 | 73 |
Node source(const Arc& a) const { return _digraph->source(a); }
|
| 68 | 74 |
Node target(const Arc& a) const { return _digraph->target(a); }
|
| 69 | 75 |
|
| 70 |
typedef NodeNumTagIndicator< |
|
| 76 |
typedef NodeNumTagIndicator<DGR> NodeNumTag; |
|
| 71 | 77 |
int nodeNum() const { return _digraph->nodeNum(); }
|
| 72 | 78 |
|
| 73 |
typedef ArcNumTagIndicator< |
|
| 79 |
typedef ArcNumTagIndicator<DGR> ArcNumTag; |
|
| 74 | 80 |
int arcNum() const { return _digraph->arcNum(); }
|
| 75 | 81 |
|
| 76 |
typedef FindArcTagIndicator< |
|
| 82 |
typedef FindArcTagIndicator<DGR> FindArcTag; |
|
| 77 | 83 |
Arc findArc(const Node& u, const Node& v, const Arc& prev = INVALID) const {
|
| 78 | 84 |
return _digraph->findArc(u, v, prev); |
| 79 | 85 |
} |
| 80 | 86 |
|
| 81 | 87 |
Node addNode() { return _digraph->addNode(); }
|
| 82 | 88 |
Arc addArc(const Node& u, const Node& v) { return _digraph->addArc(u, v); }
|
| 83 | 89 |
|
| 84 | 90 |
void erase(const Node& n) { _digraph->erase(n); }
|
| 85 | 91 |
void erase(const Arc& a) { _digraph->erase(a); }
|
| 86 | 92 |
|
| 87 | 93 |
void clear() { _digraph->clear(); }
|
| 88 | 94 |
|
| 89 | 95 |
int id(const Node& n) const { return _digraph->id(n); }
|
| 90 | 96 |
int id(const Arc& a) const { return _digraph->id(a); }
|
| 91 | 97 |
|
| 92 | 98 |
Node nodeFromId(int ix) const { return _digraph->nodeFromId(ix); }
|
| 93 | 99 |
Arc arcFromId(int ix) const { return _digraph->arcFromId(ix); }
|
| 94 | 100 |
|
| 95 | 101 |
int maxNodeId() const { return _digraph->maxNodeId(); }
|
| 96 | 102 |
int maxArcId() const { return _digraph->maxArcId(); }
|
| 97 | 103 |
|
| 98 |
typedef typename ItemSetTraits< |
|
| 104 |
typedef typename ItemSetTraits<DGR, Node>::ItemNotifier NodeNotifier; |
|
| 99 | 105 |
NodeNotifier& notifier(Node) const { return _digraph->notifier(Node()); }
|
| 100 | 106 |
|
| 101 |
typedef typename ItemSetTraits< |
|
| 107 |
typedef typename ItemSetTraits<DGR, Arc>::ItemNotifier ArcNotifier; |
|
| 102 | 108 |
ArcNotifier& notifier(Arc) const { return _digraph->notifier(Arc()); }
|
| 103 | 109 |
|
| 104 |
template <typename _Value> |
|
| 105 |
class NodeMap : public Digraph::template NodeMap<_Value> {
|
|
| 110 |
template <typename V> |
|
| 111 |
class NodeMap : public DGR::template NodeMap<V> {
|
|
| 112 |
typedef typename DGR::template NodeMap<V> Parent; |
|
| 113 |
|
|
| 106 | 114 |
public: |
| 107 |
|
|
| 108 |
typedef typename Digraph::template NodeMap<_Value> Parent; |
|
| 109 |
|
|
| 110 | 115 |
explicit NodeMap(const Adaptor& adaptor) |
| 111 | 116 |
: Parent(*adaptor._digraph) {}
|
| 112 |
|
|
| 113 |
NodeMap(const Adaptor& adaptor, const _Value& value) |
|
| 117 |
NodeMap(const Adaptor& adaptor, const V& value) |
|
| 114 | 118 |
: Parent(*adaptor._digraph, value) { }
|
| 115 | 119 |
|
| 116 | 120 |
private: |
| 117 | 121 |
NodeMap& operator=(const NodeMap& cmap) {
|
| 118 | 122 |
return operator=<NodeMap>(cmap); |
| 119 | 123 |
} |
| 120 | 124 |
|
| 121 | 125 |
template <typename CMap> |
| 122 | 126 |
NodeMap& operator=(const CMap& cmap) {
|
| 123 | 127 |
Parent::operator=(cmap); |
| 124 | 128 |
return *this; |
| 125 | 129 |
} |
| 126 | 130 |
|
| 127 | 131 |
}; |
| 128 | 132 |
|
| 129 |
template <typename _Value> |
|
| 130 |
class ArcMap : public Digraph::template ArcMap<_Value> {
|
|
| 133 |
template <typename V> |
|
| 134 |
class ArcMap : public DGR::template ArcMap<V> {
|
|
| 135 |
typedef typename DGR::template ArcMap<V> Parent; |
|
| 136 |
|
|
| 131 | 137 |
public: |
| 132 |
|
|
| 133 |
typedef typename Digraph::template ArcMap<_Value> Parent; |
|
| 134 |
|
|
| 135 |
explicit ArcMap(const Adaptor& adaptor) |
|
| 138 |
explicit ArcMap(const DigraphAdaptorBase<DGR>& adaptor) |
|
| 136 | 139 |
: Parent(*adaptor._digraph) {}
|
| 137 |
|
|
| 138 |
ArcMap(const Adaptor& adaptor, const _Value& value) |
|
| 140 |
ArcMap(const DigraphAdaptorBase<DGR>& adaptor, const V& value) |
|
| 139 | 141 |
: Parent(*adaptor._digraph, value) {}
|
| 140 | 142 |
|
| 141 | 143 |
private: |
| 142 | 144 |
ArcMap& operator=(const ArcMap& cmap) {
|
| 143 | 145 |
return operator=<ArcMap>(cmap); |
| 144 | 146 |
} |
| 145 | 147 |
|
| 146 | 148 |
template <typename CMap> |
| 147 | 149 |
ArcMap& operator=(const CMap& cmap) {
|
| 148 | 150 |
Parent::operator=(cmap); |
| 149 | 151 |
return *this; |
| 150 | 152 |
} |
| 151 | 153 |
|
| 152 | 154 |
}; |
| 153 | 155 |
|
| 154 | 156 |
}; |
| 155 | 157 |
|
| 156 |
template<typename |
|
| 158 |
template<typename GR> |
|
| 157 | 159 |
class GraphAdaptorBase {
|
| 158 | 160 |
public: |
| 159 |
typedef _Graph Graph; |
|
| 160 |
typedef Graph ParentGraph; |
|
| 161 |
typedef GR Graph; |
|
| 161 | 162 |
|
| 162 | 163 |
protected: |
| 163 |
|
|
| 164 |
GR* _graph; |
|
| 164 | 165 |
|
| 165 | 166 |
GraphAdaptorBase() : _graph(0) {}
|
| 166 | 167 |
|
| 167 |
void |
|
| 168 |
void initialize(GR& graph) { _graph = &graph; }
|
|
| 168 | 169 |
|
| 169 | 170 |
public: |
| 170 |
GraphAdaptorBase(Graph& graph) : _graph(&graph) {}
|
|
| 171 |
|
|
| 172 |
typedef typename Graph::Node Node; |
|
| 173 |
typedef typename Graph::Arc Arc; |
|
| 174 |
|
|
| 171 |
GraphAdaptorBase(GR& graph) : _graph(&graph) {}
|
|
| 172 |
|
|
| 173 |
typedef typename GR::Node Node; |
|
| 174 |
typedef typename GR::Arc Arc; |
|
| 175 |
typedef typename GR::Edge Edge; |
|
| 175 | 176 |
|
| 176 | 177 |
void first(Node& i) const { _graph->first(i); }
|
| 177 | 178 |
void first(Arc& i) const { _graph->first(i); }
|
| 178 | 179 |
void first(Edge& i) const { _graph->first(i); }
|
| 179 | 180 |
void firstIn(Arc& i, const Node& n) const { _graph->firstIn(i, n); }
|
| 180 | 181 |
void firstOut(Arc& i, const Node& n ) const { _graph->firstOut(i, n); }
|
| 181 | 182 |
void firstInc(Edge &i, bool &d, const Node &n) const {
|
| 182 | 183 |
_graph->firstInc(i, d, n); |
| 183 | 184 |
} |
| 184 | 185 |
|
| 185 | 186 |
void next(Node& i) const { _graph->next(i); }
|
| 186 | 187 |
void next(Arc& i) const { _graph->next(i); }
|
| 187 | 188 |
void next(Edge& i) const { _graph->next(i); }
|
| 188 | 189 |
void nextIn(Arc& i) const { _graph->nextIn(i); }
|
| 189 | 190 |
void nextOut(Arc& i) const { _graph->nextOut(i); }
|
| 190 | 191 |
void nextInc(Edge &i, bool &d) const { _graph->nextInc(i, d); }
|
| 191 | 192 |
|
| 192 | 193 |
Node u(const Edge& e) const { return _graph->u(e); }
|
| 193 | 194 |
Node v(const Edge& e) const { return _graph->v(e); }
|
| 194 | 195 |
|
| 195 | 196 |
Node source(const Arc& a) const { return _graph->source(a); }
|
| 196 | 197 |
Node target(const Arc& a) const { return _graph->target(a); }
|
| 197 | 198 |
|
| 198 | 199 |
typedef NodeNumTagIndicator<Graph> NodeNumTag; |
| 199 | 200 |
int nodeNum() const { return _graph->nodeNum(); }
|
| 200 | 201 |
|
| 201 | 202 |
typedef ArcNumTagIndicator<Graph> ArcNumTag; |
| 202 | 203 |
int arcNum() const { return _graph->arcNum(); }
|
| 203 | 204 |
|
| 204 | 205 |
typedef EdgeNumTagIndicator<Graph> EdgeNumTag; |
| 205 | 206 |
int edgeNum() const { return _graph->edgeNum(); }
|
| 206 | 207 |
|
| 207 | 208 |
typedef FindArcTagIndicator<Graph> FindArcTag; |
| 208 | 209 |
Arc findArc(const Node& u, const Node& v, |
| 209 | 210 |
const Arc& prev = INVALID) const {
|
| 210 | 211 |
return _graph->findArc(u, v, prev); |
| 211 | 212 |
} |
| 212 | 213 |
|
| 213 | 214 |
typedef FindEdgeTagIndicator<Graph> FindEdgeTag; |
| 214 | 215 |
Edge findEdge(const Node& u, const Node& v, |
| 215 | 216 |
const Edge& prev = INVALID) const {
|
| 216 | 217 |
return _graph->findEdge(u, v, prev); |
| 217 | 218 |
} |
| 218 | 219 |
|
| 219 | 220 |
Node addNode() { return _graph->addNode(); }
|
| 220 | 221 |
Edge addEdge(const Node& u, const Node& v) { return _graph->addEdge(u, v); }
|
| 221 | 222 |
|
| 222 | 223 |
void erase(const Node& i) { _graph->erase(i); }
|
| 223 | 224 |
void erase(const Edge& i) { _graph->erase(i); }
|
| 224 | 225 |
|
| 225 | 226 |
void clear() { _graph->clear(); }
|
| 226 | 227 |
|
| 227 | 228 |
bool direction(const Arc& a) const { return _graph->direction(a); }
|
| 228 | 229 |
Arc direct(const Edge& e, bool d) const { return _graph->direct(e, d); }
|
| 229 | 230 |
|
| 230 | 231 |
int id(const Node& v) const { return _graph->id(v); }
|
| 231 | 232 |
int id(const Arc& a) const { return _graph->id(a); }
|
| 232 | 233 |
int id(const Edge& e) const { return _graph->id(e); }
|
| 233 | 234 |
|
| 234 | 235 |
Node nodeFromId(int ix) const { return _graph->nodeFromId(ix); }
|
| 235 | 236 |
Arc arcFromId(int ix) const { return _graph->arcFromId(ix); }
|
| 236 | 237 |
Edge edgeFromId(int ix) const { return _graph->edgeFromId(ix); }
|
| 237 | 238 |
|
| 238 | 239 |
int maxNodeId() const { return _graph->maxNodeId(); }
|
| 239 | 240 |
int maxArcId() const { return _graph->maxArcId(); }
|
| 240 | 241 |
int maxEdgeId() const { return _graph->maxEdgeId(); }
|
| 241 | 242 |
|
| 242 |
typedef typename ItemSetTraits< |
|
| 243 |
typedef typename ItemSetTraits<GR, Node>::ItemNotifier NodeNotifier; |
|
| 243 | 244 |
NodeNotifier& notifier(Node) const { return _graph->notifier(Node()); }
|
| 244 | 245 |
|
| 245 |
typedef typename ItemSetTraits< |
|
| 246 |
typedef typename ItemSetTraits<GR, Arc>::ItemNotifier ArcNotifier; |
|
| 246 | 247 |
ArcNotifier& notifier(Arc) const { return _graph->notifier(Arc()); }
|
| 247 | 248 |
|
| 248 |
typedef typename ItemSetTraits< |
|
| 249 |
typedef typename ItemSetTraits<GR, Edge>::ItemNotifier EdgeNotifier; |
|
| 249 | 250 |
EdgeNotifier& notifier(Edge) const { return _graph->notifier(Edge()); }
|
| 250 | 251 |
|
| 251 |
template <typename _Value> |
|
| 252 |
class NodeMap : public Graph::template NodeMap<_Value> {
|
|
| 252 |
template <typename V> |
|
| 253 |
class NodeMap : public GR::template NodeMap<V> {
|
|
| 254 |
typedef typename GR::template NodeMap<V> Parent; |
|
| 255 |
|
|
| 253 | 256 |
public: |
| 254 |
typedef typename Graph::template NodeMap<_Value> Parent; |
|
| 255 |
explicit NodeMap(const GraphAdaptorBase<Graph>& adapter) |
|
| 257 |
explicit NodeMap(const GraphAdaptorBase<GR>& adapter) |
|
| 256 | 258 |
: Parent(*adapter._graph) {}
|
| 257 |
NodeMap(const GraphAdaptorBase< |
|
| 259 |
NodeMap(const GraphAdaptorBase<GR>& adapter, const V& value) |
|
| 258 | 260 |
: Parent(*adapter._graph, value) {}
|
| 259 | 261 |
|
| 260 | 262 |
private: |
| 261 | 263 |
NodeMap& operator=(const NodeMap& cmap) {
|
| 262 | 264 |
return operator=<NodeMap>(cmap); |
| 263 | 265 |
} |
| 264 | 266 |
|
| 265 | 267 |
template <typename CMap> |
| 266 | 268 |
NodeMap& operator=(const CMap& cmap) {
|
| 267 | 269 |
Parent::operator=(cmap); |
| 268 | 270 |
return *this; |
| 269 | 271 |
} |
| 270 | 272 |
|
| 271 | 273 |
}; |
| 272 | 274 |
|
| 273 |
template <typename _Value> |
|
| 274 |
class ArcMap : public Graph::template ArcMap<_Value> {
|
|
| 275 |
template <typename V> |
|
| 276 |
class ArcMap : public GR::template ArcMap<V> {
|
|
| 277 |
typedef typename GR::template ArcMap<V> Parent; |
|
| 278 |
|
|
| 275 | 279 |
public: |
| 276 |
typedef typename Graph::template ArcMap<_Value> Parent; |
|
| 277 |
explicit ArcMap(const GraphAdaptorBase<Graph>& adapter) |
|
| 280 |
explicit ArcMap(const GraphAdaptorBase<GR>& adapter) |
|
| 278 | 281 |
: Parent(*adapter._graph) {}
|
| 279 |
ArcMap(const GraphAdaptorBase< |
|
| 282 |
ArcMap(const GraphAdaptorBase<GR>& adapter, const V& value) |
|
| 280 | 283 |
: Parent(*adapter._graph, value) {}
|
| 281 | 284 |
|
| 282 | 285 |
private: |
| 283 | 286 |
ArcMap& operator=(const ArcMap& cmap) {
|
| 284 | 287 |
return operator=<ArcMap>(cmap); |
| 285 | 288 |
} |
| 286 | 289 |
|
| 287 | 290 |
template <typename CMap> |
| 288 | 291 |
ArcMap& operator=(const CMap& cmap) {
|
| 289 | 292 |
Parent::operator=(cmap); |
| 290 | 293 |
return *this; |
| 291 | 294 |
} |
| 292 | 295 |
}; |
| 293 | 296 |
|
| 294 |
template <typename _Value> |
|
| 295 |
class EdgeMap : public Graph::template EdgeMap<_Value> {
|
|
| 297 |
template <typename V> |
|
| 298 |
class EdgeMap : public GR::template EdgeMap<V> {
|
|
| 299 |
typedef typename GR::template EdgeMap<V> Parent; |
|
| 300 |
|
|
| 296 | 301 |
public: |
| 297 |
typedef typename Graph::template EdgeMap<_Value> Parent; |
|
| 298 |
explicit EdgeMap(const GraphAdaptorBase<Graph>& adapter) |
|
| 302 |
explicit EdgeMap(const GraphAdaptorBase<GR>& adapter) |
|
| 299 | 303 |
: Parent(*adapter._graph) {}
|
| 300 |
EdgeMap(const GraphAdaptorBase< |
|
| 304 |
EdgeMap(const GraphAdaptorBase<GR>& adapter, const V& value) |
|
| 301 | 305 |
: Parent(*adapter._graph, value) {}
|
| 302 | 306 |
|
| 303 | 307 |
private: |
| 304 | 308 |
EdgeMap& operator=(const EdgeMap& cmap) {
|
| 305 | 309 |
return operator=<EdgeMap>(cmap); |
| 306 | 310 |
} |
| 307 | 311 |
|
| 308 | 312 |
template <typename CMap> |
| 309 | 313 |
EdgeMap& operator=(const CMap& cmap) {
|
| 310 | 314 |
Parent::operator=(cmap); |
| 311 | 315 |
return *this; |
| 312 | 316 |
} |
| 313 | 317 |
}; |
| 314 | 318 |
|
| 315 | 319 |
}; |
| 316 | 320 |
|
| 317 |
template <typename _Digraph> |
|
| 318 |
class ReverseDigraphBase : public DigraphAdaptorBase<_Digraph> {
|
|
| 321 |
template <typename DGR> |
|
| 322 |
class ReverseDigraphBase : public DigraphAdaptorBase<DGR> {
|
|
| 323 |
typedef DigraphAdaptorBase<DGR> Parent; |
|
| 319 | 324 |
public: |
| 320 |
typedef _Digraph Digraph; |
|
| 321 |
typedef DigraphAdaptorBase<_Digraph> Parent; |
|
| 325 |
typedef DGR Digraph; |
|
| 322 | 326 |
protected: |
| 323 | 327 |
ReverseDigraphBase() : Parent() { }
|
| 324 | 328 |
public: |
| 325 | 329 |
typedef typename Parent::Node Node; |
| 326 | 330 |
typedef typename Parent::Arc Arc; |
| 327 | 331 |
|
| 328 | 332 |
void firstIn(Arc& a, const Node& n) const { Parent::firstOut(a, n); }
|
| 329 | 333 |
void firstOut(Arc& a, const Node& n ) const { Parent::firstIn(a, n); }
|
| 330 | 334 |
|
| 331 | 335 |
void nextIn(Arc& a) const { Parent::nextOut(a); }
|
| 332 | 336 |
void nextOut(Arc& a) const { Parent::nextIn(a); }
|
| 333 | 337 |
|
| 334 | 338 |
Node source(const Arc& a) const { return Parent::target(a); }
|
| 335 | 339 |
Node target(const Arc& a) const { return Parent::source(a); }
|
| 336 | 340 |
|
| 337 | 341 |
Arc addArc(const Node& u, const Node& v) { return Parent::addArc(v, u); }
|
| 338 | 342 |
|
| 339 |
typedef FindArcTagIndicator< |
|
| 343 |
typedef FindArcTagIndicator<DGR> FindArcTag; |
|
| 340 | 344 |
Arc findArc(const Node& u, const Node& v, |
| 341 | 345 |
const Arc& prev = INVALID) const {
|
| 342 | 346 |
return Parent::findArc(v, u, prev); |
| 343 | 347 |
} |
| 344 | 348 |
|
| 345 | 349 |
}; |
| 346 | 350 |
|
| 347 | 351 |
/// \ingroup graph_adaptors |
| 348 | 352 |
/// |
| 349 | 353 |
/// \brief Adaptor class for reversing the orientation of the arcs in |
| 350 | 354 |
/// a digraph. |
| 351 | 355 |
/// |
| 352 | 356 |
/// ReverseDigraph can be used for reversing the arcs in a digraph. |
| 353 | 357 |
/// It conforms to the \ref concepts::Digraph "Digraph" concept. |
| 354 | 358 |
/// |
| 355 | 359 |
/// The adapted digraph can also be modified through this adaptor |
| 356 | 360 |
/// by adding or removing nodes or arcs, unless the \c GR template |
| 357 | 361 |
/// parameter is set to be \c const. |
| 358 | 362 |
/// |
| 359 |
/// \tparam |
|
| 363 |
/// \tparam DGR The type of the adapted digraph. |
|
| 360 | 364 |
/// It must conform to the \ref concepts::Digraph "Digraph" concept. |
| 361 | 365 |
/// It can also be specified to be \c const. |
| 362 | 366 |
/// |
| 363 | 367 |
/// \note The \c Node and \c Arc types of this adaptor and the adapted |
| 364 | 368 |
/// digraph are convertible to each other. |
| 365 |
template<typename |
|
| 369 |
template<typename DGR> |
|
| 366 | 370 |
#ifdef DOXYGEN |
| 367 | 371 |
class ReverseDigraph {
|
| 368 | 372 |
#else |
| 369 | 373 |
class ReverseDigraph : |
| 370 |
public DigraphAdaptorExtender<ReverseDigraphBase< |
|
| 374 |
public DigraphAdaptorExtender<ReverseDigraphBase<DGR> > {
|
|
| 371 | 375 |
#endif |
| 376 |
typedef DigraphAdaptorExtender<ReverseDigraphBase<DGR> > Parent; |
|
| 372 | 377 |
public: |
| 373 | 378 |
/// The type of the adapted digraph. |
| 374 |
typedef GR Digraph; |
|
| 375 |
typedef DigraphAdaptorExtender<ReverseDigraphBase<GR> > Parent; |
|
| 379 |
typedef DGR Digraph; |
|
| 376 | 380 |
protected: |
| 377 | 381 |
ReverseDigraph() { }
|
| 378 | 382 |
public: |
| 379 | 383 |
|
| 380 | 384 |
/// \brief Constructor |
| 381 | 385 |
/// |
| 382 | 386 |
/// Creates a reverse digraph adaptor for the given digraph. |
| 383 |
explicit ReverseDigraph(Digraph& digraph) {
|
|
| 384 |
Parent::setDigraph(digraph); |
|
| 387 |
explicit ReverseDigraph(DGR& digraph) {
|
|
| 388 |
Parent::initialize(digraph); |
|
| 385 | 389 |
} |
| 386 | 390 |
}; |
| 387 | 391 |
|
| 388 | 392 |
/// \brief Returns a read-only ReverseDigraph adaptor |
| 389 | 393 |
/// |
| 390 | 394 |
/// This function just returns a read-only \ref ReverseDigraph adaptor. |
| 391 | 395 |
/// \ingroup graph_adaptors |
| 392 | 396 |
/// \relates ReverseDigraph |
| 393 |
template<typename GR> |
|
| 394 |
ReverseDigraph<const GR> reverseDigraph(const GR& digraph) {
|
|
| 395 |
|
|
| 397 |
template<typename DGR> |
|
| 398 |
ReverseDigraph<const DGR> reverseDigraph(const DGR& digraph) {
|
|
| 399 |
return ReverseDigraph<const DGR>(digraph); |
|
| 396 | 400 |
} |
| 397 | 401 |
|
| 398 | 402 |
|
| 399 |
template <typename _Digraph, typename _NodeFilterMap, |
|
| 400 |
typename _ArcFilterMap, bool _checked = true> |
|
| 401 |
|
|
| 403 |
template <typename DGR, typename NF, typename AF, bool ch = true> |
|
| 404 |
class SubDigraphBase : public DigraphAdaptorBase<DGR> {
|
|
| 405 |
typedef DigraphAdaptorBase<DGR> Parent; |
|
| 402 | 406 |
public: |
| 403 |
typedef _Digraph Digraph; |
|
| 404 |
typedef _NodeFilterMap NodeFilterMap; |
|
| 405 |
typedef |
|
| 407 |
typedef DGR Digraph; |
|
| 408 |
typedef NF NodeFilterMap; |
|
| 409 |
typedef AF ArcFilterMap; |
|
| 406 | 410 |
|
| 407 | 411 |
typedef SubDigraphBase Adaptor; |
| 408 |
typedef DigraphAdaptorBase<_Digraph> Parent; |
|
| 409 | 412 |
protected: |
| 410 |
NodeFilterMap* _node_filter; |
|
| 411 |
ArcFilterMap* _arc_filter; |
|
| 413 |
NF* _node_filter; |
|
| 414 |
AF* _arc_filter; |
|
| 412 | 415 |
SubDigraphBase() |
| 413 | 416 |
: Parent(), _node_filter(0), _arc_filter(0) { }
|
| 414 | 417 |
|
| 415 |
void |
|
| 418 |
void initialize(DGR& digraph, NF& node_filter, AF& arc_filter) {
|
|
| 419 |
Parent::initialize(digraph); |
|
| 416 | 420 |
_node_filter = &node_filter; |
| 417 |
} |
|
| 418 |
void setArcFilterMap(ArcFilterMap& arc_filter) {
|
|
| 419 |
_arc_filter = &arc_filter; |
|
| 421 |
_arc_filter = &arc_filter; |
|
| 420 | 422 |
} |
| 421 | 423 |
|
| 422 | 424 |
public: |
| 423 | 425 |
|
| 424 | 426 |
typedef typename Parent::Node Node; |
| 425 | 427 |
typedef typename Parent::Arc Arc; |
| 426 | 428 |
|
| 427 | 429 |
void first(Node& i) const {
|
| 428 | 430 |
Parent::first(i); |
| 429 | 431 |
while (i != INVALID && !(*_node_filter)[i]) Parent::next(i); |
| 430 | 432 |
} |
| 431 | 433 |
|
| 432 | 434 |
void first(Arc& i) const {
|
| 433 | 435 |
Parent::first(i); |
| 434 | 436 |
while (i != INVALID && (!(*_arc_filter)[i] |
| 435 | 437 |
|| !(*_node_filter)[Parent::source(i)] |
| 436 | 438 |
|| !(*_node_filter)[Parent::target(i)])) |
| 437 | 439 |
Parent::next(i); |
| 438 | 440 |
} |
| 439 | 441 |
|
| 440 | 442 |
void firstIn(Arc& i, const Node& n) const {
|
| 441 | 443 |
Parent::firstIn(i, n); |
| 442 | 444 |
while (i != INVALID && (!(*_arc_filter)[i] |
| 443 | 445 |
|| !(*_node_filter)[Parent::source(i)])) |
| 444 | 446 |
Parent::nextIn(i); |
| 445 | 447 |
} |
| 446 | 448 |
|
| 447 | 449 |
void firstOut(Arc& i, const Node& n) const {
|
| 448 | 450 |
Parent::firstOut(i, n); |
| 449 | 451 |
while (i != INVALID && (!(*_arc_filter)[i] |
| 450 | 452 |
|| !(*_node_filter)[Parent::target(i)])) |
| 451 | 453 |
Parent::nextOut(i); |
| 452 | 454 |
} |
| 453 | 455 |
|
| 454 | 456 |
void next(Node& i) const {
|
| 455 | 457 |
Parent::next(i); |
| 456 | 458 |
while (i != INVALID && !(*_node_filter)[i]) Parent::next(i); |
| 457 | 459 |
} |
| 458 | 460 |
|
| 459 | 461 |
void next(Arc& i) const {
|
| 460 | 462 |
Parent::next(i); |
| 461 | 463 |
while (i != INVALID && (!(*_arc_filter)[i] |
| 462 | 464 |
|| !(*_node_filter)[Parent::source(i)] |
| 463 | 465 |
|| !(*_node_filter)[Parent::target(i)])) |
| 464 | 466 |
Parent::next(i); |
| 465 | 467 |
} |
| 466 | 468 |
|
| 467 | 469 |
void nextIn(Arc& i) const {
|
| 468 | 470 |
Parent::nextIn(i); |
| 469 | 471 |
while (i != INVALID && (!(*_arc_filter)[i] |
| 470 | 472 |
|| !(*_node_filter)[Parent::source(i)])) |
| 471 | 473 |
Parent::nextIn(i); |
| 472 | 474 |
} |
| 473 | 475 |
|
| 474 | 476 |
void nextOut(Arc& i) const {
|
| 475 | 477 |
Parent::nextOut(i); |
| 476 | 478 |
while (i != INVALID && (!(*_arc_filter)[i] |
| 477 | 479 |
|| !(*_node_filter)[Parent::target(i)])) |
| 478 | 480 |
Parent::nextOut(i); |
| 479 | 481 |
} |
| 480 | 482 |
|
| 481 | 483 |
void status(const Node& n, bool v) const { _node_filter->set(n, v); }
|
| 482 | 484 |
void status(const Arc& a, bool v) const { _arc_filter->set(a, v); }
|
| 483 | 485 |
|
| 484 | 486 |
bool status(const Node& n) const { return (*_node_filter)[n]; }
|
| 485 | 487 |
bool status(const Arc& a) const { return (*_arc_filter)[a]; }
|
| 486 | 488 |
|
| 487 | 489 |
typedef False NodeNumTag; |
| 488 | 490 |
typedef False ArcNumTag; |
| 489 | 491 |
|
| 490 |
typedef FindArcTagIndicator< |
|
| 492 |
typedef FindArcTagIndicator<DGR> FindArcTag; |
|
| 491 | 493 |
Arc findArc(const Node& source, const Node& target, |
| 492 | 494 |
const Arc& prev = INVALID) const {
|
| 493 | 495 |
if (!(*_node_filter)[source] || !(*_node_filter)[target]) {
|
| 494 | 496 |
return INVALID; |
| 495 | 497 |
} |
| 496 | 498 |
Arc arc = Parent::findArc(source, target, prev); |
| 497 | 499 |
while (arc != INVALID && !(*_arc_filter)[arc]) {
|
| 498 | 500 |
arc = Parent::findArc(source, target, arc); |
| 499 | 501 |
} |
| 500 | 502 |
return arc; |
| 501 | 503 |
} |
| 502 | 504 |
|
| 503 |
template <typename _Value> |
|
| 504 |
class NodeMap : public SubMapExtender<Adaptor, |
|
| 505 |
|
|
| 505 |
public: |
|
| 506 |
|
|
| 507 |
template <typename V> |
|
| 508 |
class NodeMap |
|
| 509 |
: public SubMapExtender<SubDigraphBase<DGR, NF, AF, ch>, |
|
| 510 |
LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, NodeMap<V>)> {
|
|
| 511 |
typedef SubMapExtender<SubDigraphBase<DGR, NF, AF, ch>, |
|
| 512 |
LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, NodeMap<V>)> Parent; |
|
| 513 |
|
|
| 506 | 514 |
public: |
| 507 |
typedef _Value Value; |
|
| 508 |
typedef SubMapExtender<Adaptor, typename Parent:: |
|
| 509 |
template NodeMap<Value> > MapParent; |
|
| 510 |
|
|
| 511 |
NodeMap(const Adaptor& adaptor) |
|
| 512 |
: MapParent(adaptor) {}
|
|
| 513 |
NodeMap(const Adaptor& adaptor, const Value& value) |
|
| 514 |
: MapParent(adaptor, value) {}
|
|
| 515 |
typedef V Value; |
|
| 516 |
|
|
| 517 |
NodeMap(const SubDigraphBase<DGR, NF, AF, ch>& adaptor) |
|
| 518 |
: Parent(adaptor) {}
|
|
| 519 |
NodeMap(const SubDigraphBase<DGR, NF, AF, ch>& adaptor, const V& value) |
|
| 520 |
: Parent(adaptor, value) {}
|
|
| 515 | 521 |
|
| 516 | 522 |
private: |
| 517 | 523 |
NodeMap& operator=(const NodeMap& cmap) {
|
| 518 | 524 |
return operator=<NodeMap>(cmap); |
| 519 | 525 |
} |
| 520 | 526 |
|
| 521 | 527 |
template <typename CMap> |
| 522 | 528 |
NodeMap& operator=(const CMap& cmap) {
|
| 523 |
|
|
| 529 |
Parent::operator=(cmap); |
|
| 524 | 530 |
return *this; |
| 525 | 531 |
} |
| 526 | 532 |
}; |
| 527 | 533 |
|
| 528 |
template <typename _Value> |
|
| 529 |
class ArcMap : public SubMapExtender<Adaptor, |
|
| 530 |
|
|
| 534 |
template <typename V> |
|
| 535 |
class ArcMap |
|
| 536 |
: public SubMapExtender<SubDigraphBase<DGR, NF, AF, ch>, |
|
| 537 |
LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, ArcMap<V>)> {
|
|
| 538 |
typedef SubMapExtender<SubDigraphBase<DGR, NF, AF, ch>, |
|
| 539 |
LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, ArcMap<V>)> Parent; |
|
| 540 |
|
|
| 531 | 541 |
public: |
| 532 |
typedef _Value Value; |
|
| 533 |
typedef SubMapExtender<Adaptor, typename Parent:: |
|
| 534 |
template ArcMap<Value> > MapParent; |
|
| 535 |
|
|
| 536 |
ArcMap(const Adaptor& adaptor) |
|
| 537 |
: MapParent(adaptor) {}
|
|
| 538 |
ArcMap(const Adaptor& adaptor, const Value& value) |
|
| 539 |
: MapParent(adaptor, value) {}
|
|
| 542 |
typedef V Value; |
|
| 543 |
|
|
| 544 |
ArcMap(const SubDigraphBase<DGR, NF, AF, ch>& adaptor) |
|
| 545 |
: Parent(adaptor) {}
|
|
| 546 |
ArcMap(const SubDigraphBase<DGR, NF, AF, ch>& adaptor, const V& value) |
|
| 547 |
: Parent(adaptor, value) {}
|
|
| 540 | 548 |
|
| 541 | 549 |
private: |
| 542 | 550 |
ArcMap& operator=(const ArcMap& cmap) {
|
| 543 | 551 |
return operator=<ArcMap>(cmap); |
| 544 | 552 |
} |
| 545 | 553 |
|
| 546 | 554 |
template <typename CMap> |
| 547 | 555 |
ArcMap& operator=(const CMap& cmap) {
|
| 548 |
|
|
| 556 |
Parent::operator=(cmap); |
|
| 549 | 557 |
return *this; |
| 550 | 558 |
} |
| 551 | 559 |
}; |
| 552 | 560 |
|
| 553 | 561 |
}; |
| 554 | 562 |
|
| 555 |
template <typename _Digraph, typename _NodeFilterMap, typename _ArcFilterMap> |
|
| 556 |
class SubDigraphBase<_Digraph, _NodeFilterMap, _ArcFilterMap, false> |
|
| 557 |
|
|
| 563 |
template <typename DGR, typename NF, typename AF> |
|
| 564 |
class SubDigraphBase<DGR, NF, AF, false> |
|
| 565 |
: public DigraphAdaptorBase<DGR> {
|
|
| 566 |
typedef DigraphAdaptorBase<DGR> Parent; |
|
| 558 | 567 |
public: |
| 559 |
typedef _Digraph Digraph; |
|
| 560 |
typedef _NodeFilterMap NodeFilterMap; |
|
| 561 |
typedef |
|
| 568 |
typedef DGR Digraph; |
|
| 569 |
typedef NF NodeFilterMap; |
|
| 570 |
typedef AF ArcFilterMap; |
|
| 562 | 571 |
|
| 563 | 572 |
typedef SubDigraphBase Adaptor; |
| 564 |
typedef DigraphAdaptorBase<Digraph> Parent; |
|
| 565 | 573 |
protected: |
| 566 |
NodeFilterMap* _node_filter; |
|
| 567 |
ArcFilterMap* _arc_filter; |
|
| 574 |
NF* _node_filter; |
|
| 575 |
AF* _arc_filter; |
|
| 568 | 576 |
SubDigraphBase() |
| 569 | 577 |
: Parent(), _node_filter(0), _arc_filter(0) { }
|
| 570 | 578 |
|
| 571 |
void |
|
| 579 |
void initialize(DGR& digraph, NF& node_filter, AF& arc_filter) {
|
|
| 580 |
Parent::initialize(digraph); |
|
| 572 | 581 |
_node_filter = &node_filter; |
| 573 |
} |
|
| 574 |
void setArcFilterMap(ArcFilterMap& arc_filter) {
|
|
| 575 |
_arc_filter = &arc_filter; |
|
| 582 |
_arc_filter = &arc_filter; |
|
| 576 | 583 |
} |
| 577 | 584 |
|
| 578 | 585 |
public: |
| 579 | 586 |
|
| 580 | 587 |
typedef typename Parent::Node Node; |
| 581 | 588 |
typedef typename Parent::Arc Arc; |
| 582 | 589 |
|
| 583 | 590 |
void first(Node& i) const {
|
| 584 | 591 |
Parent::first(i); |
| 585 | 592 |
while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
| 586 | 593 |
} |
| 587 | 594 |
|
| 588 | 595 |
void first(Arc& i) const {
|
| 589 | 596 |
Parent::first(i); |
| 590 | 597 |
while (i!=INVALID && !(*_arc_filter)[i]) Parent::next(i); |
| 591 | 598 |
} |
| 592 | 599 |
|
| 593 | 600 |
void firstIn(Arc& i, const Node& n) const {
|
| 594 | 601 |
Parent::firstIn(i, n); |
| 595 | 602 |
while (i!=INVALID && !(*_arc_filter)[i]) Parent::nextIn(i); |
| 596 | 603 |
} |
| 597 | 604 |
|
| 598 | 605 |
void firstOut(Arc& i, const Node& n) const {
|
| 599 | 606 |
Parent::firstOut(i, n); |
| 600 | 607 |
while (i!=INVALID && !(*_arc_filter)[i]) Parent::nextOut(i); |
| 601 | 608 |
} |
| 602 | 609 |
|
| 603 | 610 |
void next(Node& i) const {
|
| 604 | 611 |
Parent::next(i); |
| 605 | 612 |
while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
| 606 | 613 |
} |
| 607 | 614 |
void next(Arc& i) const {
|
| 608 | 615 |
Parent::next(i); |
| 609 | 616 |
while (i!=INVALID && !(*_arc_filter)[i]) Parent::next(i); |
| 610 | 617 |
} |
| 611 | 618 |
void nextIn(Arc& i) const {
|
| 612 | 619 |
Parent::nextIn(i); |
| 613 | 620 |
while (i!=INVALID && !(*_arc_filter)[i]) Parent::nextIn(i); |
| 614 | 621 |
} |
| 615 | 622 |
|
| 616 | 623 |
void nextOut(Arc& i) const {
|
| 617 | 624 |
Parent::nextOut(i); |
| 618 | 625 |
while (i!=INVALID && !(*_arc_filter)[i]) Parent::nextOut(i); |
| 619 | 626 |
} |
| 620 | 627 |
|
| 621 | 628 |
void status(const Node& n, bool v) const { _node_filter->set(n, v); }
|
| 622 | 629 |
void status(const Arc& a, bool v) const { _arc_filter->set(a, v); }
|
| 623 | 630 |
|
| 624 | 631 |
bool status(const Node& n) const { return (*_node_filter)[n]; }
|
| 625 | 632 |
bool status(const Arc& a) const { return (*_arc_filter)[a]; }
|
| 626 | 633 |
|
| 627 | 634 |
typedef False NodeNumTag; |
| 628 | 635 |
typedef False ArcNumTag; |
| 629 | 636 |
|
| 630 |
typedef FindArcTagIndicator< |
|
| 637 |
typedef FindArcTagIndicator<DGR> FindArcTag; |
|
| 631 | 638 |
Arc findArc(const Node& source, const Node& target, |
| 632 | 639 |
const Arc& prev = INVALID) const {
|
| 633 | 640 |
if (!(*_node_filter)[source] || !(*_node_filter)[target]) {
|
| 634 | 641 |
return INVALID; |
| 635 | 642 |
} |
| 636 | 643 |
Arc arc = Parent::findArc(source, target, prev); |
| 637 | 644 |
while (arc != INVALID && !(*_arc_filter)[arc]) {
|
| 638 | 645 |
arc = Parent::findArc(source, target, arc); |
| 639 | 646 |
} |
| 640 | 647 |
return arc; |
| 641 | 648 |
} |
| 642 | 649 |
|
| 643 |
template <typename _Value> |
|
| 644 |
class NodeMap : public SubMapExtender<Adaptor, |
|
| 645 |
|
|
| 650 |
template <typename V> |
|
| 651 |
class NodeMap |
|
| 652 |
: public SubMapExtender<SubDigraphBase<DGR, NF, AF, false>, |
|
| 653 |
LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, NodeMap<V>)> {
|
|
| 654 |
typedef SubMapExtender<SubDigraphBase<DGR, NF, AF, false>, |
|
| 655 |
LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, NodeMap<V>)> Parent; |
|
| 656 |
|
|
| 646 | 657 |
public: |
| 647 |
typedef _Value Value; |
|
| 648 |
typedef SubMapExtender<Adaptor, typename Parent:: |
|
| 649 |
template NodeMap<Value> > MapParent; |
|
| 650 |
|
|
| 651 |
NodeMap(const Adaptor& adaptor) |
|
| 652 |
: MapParent(adaptor) {}
|
|
| 653 |
NodeMap(const Adaptor& adaptor, const Value& value) |
|
| 654 |
: MapParent(adaptor, value) {}
|
|
| 658 |
typedef V Value; |
|
| 659 |
|
|
| 660 |
NodeMap(const SubDigraphBase<DGR, NF, AF, false>& adaptor) |
|
| 661 |
: Parent(adaptor) {}
|
|
| 662 |
NodeMap(const SubDigraphBase<DGR, NF, AF, false>& adaptor, const V& value) |
|
| 663 |
: Parent(adaptor, value) {}
|
|
| 655 | 664 |
|
| 656 | 665 |
private: |
| 657 | 666 |
NodeMap& operator=(const NodeMap& cmap) {
|
| 658 | 667 |
return operator=<NodeMap>(cmap); |
| 659 | 668 |
} |
| 660 | 669 |
|
| 661 | 670 |
template <typename CMap> |
| 662 | 671 |
NodeMap& operator=(const CMap& cmap) {
|
| 663 |
|
|
| 672 |
Parent::operator=(cmap); |
|
| 664 | 673 |
return *this; |
| 665 | 674 |
} |
| 666 | 675 |
}; |
| 667 | 676 |
|
| 668 |
template <typename _Value> |
|
| 669 |
class ArcMap : public SubMapExtender<Adaptor, |
|
| 670 |
|
|
| 677 |
template <typename V> |
|
| 678 |
class ArcMap |
|
| 679 |
: public SubMapExtender<SubDigraphBase<DGR, NF, AF, false>, |
|
| 680 |
LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, ArcMap<V>)> {
|
|
| 681 |
typedef SubMapExtender<SubDigraphBase<DGR, NF, AF, false>, |
|
| 682 |
LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, ArcMap<V>)> Parent; |
|
| 683 |
|
|
| 671 | 684 |
public: |
| 672 |
typedef _Value Value; |
|
| 673 |
typedef SubMapExtender<Adaptor, typename Parent:: |
|
| 674 |
template ArcMap<Value> > MapParent; |
|
| 675 |
|
|
| 676 |
ArcMap(const Adaptor& adaptor) |
|
| 677 |
: MapParent(adaptor) {}
|
|
| 678 |
ArcMap(const Adaptor& adaptor, const Value& value) |
|
| 679 |
: MapParent(adaptor, value) {}
|
|
| 685 |
typedef V Value; |
|
| 686 |
|
|
| 687 |
ArcMap(const SubDigraphBase<DGR, NF, AF, false>& adaptor) |
|
| 688 |
: Parent(adaptor) {}
|
|
| 689 |
ArcMap(const SubDigraphBase<DGR, NF, AF, false>& adaptor, const V& value) |
|
| 690 |
: Parent(adaptor, value) {}
|
|
| 680 | 691 |
|
| 681 | 692 |
private: |
| 682 | 693 |
ArcMap& operator=(const ArcMap& cmap) {
|
| 683 | 694 |
return operator=<ArcMap>(cmap); |
| 684 | 695 |
} |
| 685 | 696 |
|
| 686 | 697 |
template <typename CMap> |
| 687 | 698 |
ArcMap& operator=(const CMap& cmap) {
|
| 688 |
|
|
| 699 |
Parent::operator=(cmap); |
|
| 689 | 700 |
return *this; |
| 690 | 701 |
} |
| 691 | 702 |
}; |
| 692 | 703 |
|
| 693 | 704 |
}; |
| 694 | 705 |
|
| 695 | 706 |
/// \ingroup graph_adaptors |
| 696 | 707 |
/// |
| 697 | 708 |
/// \brief Adaptor class for hiding nodes and arcs in a digraph |
| 698 | 709 |
/// |
| 699 | 710 |
/// SubDigraph can be used for hiding nodes and arcs in a digraph. |
| 700 | 711 |
/// A \c bool node map and a \c bool arc map must be specified, which |
| 701 | 712 |
/// define the filters for nodes and arcs. |
| 702 | 713 |
/// Only the nodes and arcs with \c true filter value are |
| 703 | 714 |
/// shown in the subdigraph. The arcs that are incident to hidden |
| 704 | 715 |
/// nodes are also filtered out. |
| 705 | 716 |
/// This adaptor conforms to the \ref concepts::Digraph "Digraph" concept. |
| 706 | 717 |
/// |
| 707 | 718 |
/// The adapted digraph can also be modified through this adaptor |
| 708 | 719 |
/// by adding or removing nodes or arcs, unless the \c GR template |
| 709 | 720 |
/// parameter is set to be \c const. |
| 710 | 721 |
/// |
| 711 |
/// \tparam |
|
| 722 |
/// \tparam DGR The type of the adapted digraph. |
|
| 712 | 723 |
/// It must conform to the \ref concepts::Digraph "Digraph" concept. |
| 713 | 724 |
/// It can also be specified to be \c const. |
| 714 | 725 |
/// \tparam NF The type of the node filter map. |
| 715 | 726 |
/// It must be a \c bool (or convertible) node map of the |
| 716 | 727 |
/// adapted digraph. The default type is |
| 717 |
/// \ref concepts::Digraph::NodeMap " |
|
| 728 |
/// \ref concepts::Digraph::NodeMap "DGR::NodeMap<bool>". |
|
| 718 | 729 |
/// \tparam AF The type of the arc filter map. |
| 719 | 730 |
/// It must be \c bool (or convertible) arc map of the |
| 720 | 731 |
/// adapted digraph. The default type is |
| 721 |
/// \ref concepts::Digraph::ArcMap " |
|
| 732 |
/// \ref concepts::Digraph::ArcMap "DGR::ArcMap<bool>". |
|
| 722 | 733 |
/// |
| 723 | 734 |
/// \note The \c Node and \c Arc types of this adaptor and the adapted |
| 724 | 735 |
/// digraph are convertible to each other. |
| 725 | 736 |
/// |
| 726 | 737 |
/// \see FilterNodes |
| 727 | 738 |
/// \see FilterArcs |
| 728 | 739 |
#ifdef DOXYGEN |
| 729 |
template<typename |
|
| 740 |
template<typename DGR, typename NF, typename AF> |
|
| 730 | 741 |
class SubDigraph {
|
| 731 | 742 |
#else |
| 732 |
template<typename GR, |
|
| 733 |
typename NF = typename GR::template NodeMap<bool>, |
|
| 734 |
|
|
| 743 |
template<typename DGR, |
|
| 744 |
typename NF = typename DGR::template NodeMap<bool>, |
|
| 745 |
typename AF = typename DGR::template ArcMap<bool> > |
|
| 735 | 746 |
class SubDigraph : |
| 736 |
public DigraphAdaptorExtender<SubDigraphBase< |
|
| 747 |
public DigraphAdaptorExtender<SubDigraphBase<DGR, NF, AF, true> > {
|
|
| 737 | 748 |
#endif |
| 738 | 749 |
public: |
| 739 | 750 |
/// The type of the adapted digraph. |
| 740 |
typedef |
|
| 751 |
typedef DGR Digraph; |
|
| 741 | 752 |
/// The type of the node filter map. |
| 742 | 753 |
typedef NF NodeFilterMap; |
| 743 | 754 |
/// The type of the arc filter map. |
| 744 | 755 |
typedef AF ArcFilterMap; |
| 745 | 756 |
|
| 746 |
typedef DigraphAdaptorExtender<SubDigraphBase< |
|
| 757 |
typedef DigraphAdaptorExtender<SubDigraphBase<DGR, NF, AF, true> > |
|
| 747 | 758 |
Parent; |
| 748 | 759 |
|
| 749 | 760 |
typedef typename Parent::Node Node; |
| 750 | 761 |
typedef typename Parent::Arc Arc; |
| 751 | 762 |
|
| 752 | 763 |
protected: |
| 753 | 764 |
SubDigraph() { }
|
| 754 | 765 |
public: |
| 755 | 766 |
|
| 756 | 767 |
/// \brief Constructor |
| 757 | 768 |
/// |
| 758 | 769 |
/// Creates a subdigraph for the given digraph with the |
| 759 | 770 |
/// given node and arc filter maps. |
| 760 |
SubDigraph(Digraph& digraph, NodeFilterMap& node_filter, |
|
| 761 |
ArcFilterMap& arc_filter) {
|
|
| 762 |
setDigraph(digraph); |
|
| 763 |
setNodeFilterMap(node_filter); |
|
| 764 |
|
|
| 771 |
SubDigraph(DGR& digraph, NF& node_filter, AF& arc_filter) {
|
|
| 772 |
Parent::initialize(digraph, node_filter, arc_filter); |
|
| 765 | 773 |
} |
| 766 | 774 |
|
| 767 | 775 |
/// \brief Sets the status of the given node |
| 768 | 776 |
/// |
| 769 | 777 |
/// This function sets the status of the given node. |
| 770 | 778 |
/// It is done by simply setting the assigned value of \c n |
| 771 | 779 |
/// to \c v in the node filter map. |
| 772 | 780 |
void status(const Node& n, bool v) const { Parent::status(n, v); }
|
| 773 | 781 |
|
| 774 | 782 |
/// \brief Sets the status of the given arc |
| 775 | 783 |
/// |
| 776 | 784 |
/// This function sets the status of the given arc. |
| 777 | 785 |
/// It is done by simply setting the assigned value of \c a |
| 778 | 786 |
/// to \c v in the arc filter map. |
| 779 | 787 |
void status(const Arc& a, bool v) const { Parent::status(a, v); }
|
| 780 | 788 |
|
| 781 | 789 |
/// \brief Returns the status of the given node |
| 782 | 790 |
/// |
| 783 | 791 |
/// This function returns the status of the given node. |
| 784 | 792 |
/// It is \c true if the given node is enabled (i.e. not hidden). |
| 785 | 793 |
bool status(const Node& n) const { return Parent::status(n); }
|
| 786 | 794 |
|
| 787 | 795 |
/// \brief Returns the status of the given arc |
| 788 | 796 |
/// |
| 789 | 797 |
/// This function returns the status of the given arc. |
| 790 | 798 |
/// It is \c true if the given arc is enabled (i.e. not hidden). |
| 791 | 799 |
bool status(const Arc& a) const { return Parent::status(a); }
|
| 792 | 800 |
|
| 793 | 801 |
/// \brief Disables the given node |
| 794 | 802 |
/// |
| 795 | 803 |
/// This function disables the given node in the subdigraph, |
| 796 | 804 |
/// so the iteration jumps over it. |
| 797 | 805 |
/// It is the same as \ref status() "status(n, false)". |
| 798 | 806 |
void disable(const Node& n) const { Parent::status(n, false); }
|
| 799 | 807 |
|
| 800 | 808 |
/// \brief Disables the given arc |
| 801 | 809 |
/// |
| 802 | 810 |
/// This function disables the given arc in the subdigraph, |
| 803 | 811 |
/// so the iteration jumps over it. |
| 804 | 812 |
/// It is the same as \ref status() "status(a, false)". |
| 805 | 813 |
void disable(const Arc& a) const { Parent::status(a, false); }
|
| 806 | 814 |
|
| 807 | 815 |
/// \brief Enables the given node |
| 808 | 816 |
/// |
| 809 | 817 |
/// This function enables the given node in the subdigraph. |
| 810 | 818 |
/// It is the same as \ref status() "status(n, true)". |
| 811 | 819 |
void enable(const Node& n) const { Parent::status(n, true); }
|
| 812 | 820 |
|
| 813 | 821 |
/// \brief Enables the given arc |
| 814 | 822 |
/// |
| 815 | 823 |
/// This function enables the given arc in the subdigraph. |
| 816 | 824 |
/// It is the same as \ref status() "status(a, true)". |
| 817 | 825 |
void enable(const Arc& a) const { Parent::status(a, true); }
|
| 818 | 826 |
|
| 819 | 827 |
}; |
| 820 | 828 |
|
| 821 | 829 |
/// \brief Returns a read-only SubDigraph adaptor |
| 822 | 830 |
/// |
| 823 | 831 |
/// This function just returns a read-only \ref SubDigraph adaptor. |
| 824 | 832 |
/// \ingroup graph_adaptors |
| 825 | 833 |
/// \relates SubDigraph |
| 826 |
template<typename GR, typename NF, typename AF> |
|
| 827 |
SubDigraph<const GR, NF, AF> |
|
| 828 |
subDigraph(const GR& digraph, |
|
| 829 |
NF& node_filter_map, AF& arc_filter_map) {
|
|
| 830 |
return SubDigraph<const GR, NF, AF> |
|
| 831 |
(digraph, node_filter_map, arc_filter_map); |
|
| 834 |
template<typename DGR, typename NF, typename AF> |
|
| 835 |
SubDigraph<const DGR, NF, AF> |
|
| 836 |
subDigraph(const DGR& digraph, |
|
| 837 |
NF& node_filter, AF& arc_filter) {
|
|
| 838 |
return SubDigraph<const DGR, NF, AF> |
|
| 839 |
(digraph, node_filter, arc_filter); |
|
| 832 | 840 |
} |
| 833 | 841 |
|
| 834 |
template<typename GR, typename NF, typename AF> |
|
| 835 |
SubDigraph<const GR, const NF, AF> |
|
| 836 |
subDigraph(const GR& digraph, |
|
| 837 |
const NF& node_filter_map, AF& arc_filter_map) {
|
|
| 838 |
return SubDigraph<const GR, const NF, AF> |
|
| 839 |
(digraph, node_filter_map, arc_filter_map); |
|
| 842 |
template<typename DGR, typename NF, typename AF> |
|
| 843 |
SubDigraph<const DGR, const NF, AF> |
|
| 844 |
subDigraph(const DGR& digraph, |
|
| 845 |
const NF& node_filter, AF& arc_filter) {
|
|
| 846 |
return SubDigraph<const DGR, const NF, AF> |
|
| 847 |
(digraph, node_filter, arc_filter); |
|
| 840 | 848 |
} |
| 841 | 849 |
|
| 842 |
template<typename GR, typename NF, typename AF> |
|
| 843 |
SubDigraph<const GR, NF, const AF> |
|
| 844 |
subDigraph(const GR& digraph, |
|
| 845 |
NF& node_filter_map, const AF& arc_filter_map) {
|
|
| 846 |
return SubDigraph<const GR, NF, const AF> |
|
| 847 |
(digraph, node_filter_map, arc_filter_map); |
|
| 850 |
template<typename DGR, typename NF, typename AF> |
|
| 851 |
SubDigraph<const DGR, NF, const AF> |
|
| 852 |
subDigraph(const DGR& digraph, |
|
| 853 |
NF& node_filter, const AF& arc_filter) {
|
|
| 854 |
return SubDigraph<const DGR, NF, const AF> |
|
| 855 |
(digraph, node_filter, arc_filter); |
|
| 848 | 856 |
} |
| 849 | 857 |
|
| 850 |
template<typename GR, typename NF, typename AF> |
|
| 851 |
SubDigraph<const GR, const NF, const AF> |
|
| 852 |
subDigraph(const GR& digraph, |
|
| 853 |
const NF& node_filter_map, const AF& arc_filter_map) {
|
|
| 854 |
return SubDigraph<const GR, const NF, const AF> |
|
| 855 |
(digraph, node_filter_map, arc_filter_map); |
|
| 858 |
template<typename DGR, typename NF, typename AF> |
|
| 859 |
SubDigraph<const DGR, const NF, const AF> |
|
| 860 |
subDigraph(const DGR& digraph, |
|
| 861 |
const NF& node_filter, const AF& arc_filter) {
|
|
| 862 |
return SubDigraph<const DGR, const NF, const AF> |
|
| 863 |
(digraph, node_filter, arc_filter); |
|
| 856 | 864 |
} |
| 857 | 865 |
|
| 858 | 866 |
|
| 859 |
template <typename _Graph, typename _NodeFilterMap, |
|
| 860 |
typename _EdgeFilterMap, bool _checked = true> |
|
| 861 |
|
|
| 867 |
template <typename GR, typename NF, typename EF, bool ch = true> |
|
| 868 |
class SubGraphBase : public GraphAdaptorBase<GR> {
|
|
| 869 |
typedef GraphAdaptorBase<GR> Parent; |
|
| 862 | 870 |
public: |
| 863 |
typedef _Graph Graph; |
|
| 864 |
typedef _NodeFilterMap NodeFilterMap; |
|
| 865 |
typedef |
|
| 871 |
typedef GR Graph; |
|
| 872 |
typedef NF NodeFilterMap; |
|
| 873 |
typedef EF EdgeFilterMap; |
|
| 866 | 874 |
|
| 867 | 875 |
typedef SubGraphBase Adaptor; |
| 868 |
typedef GraphAdaptorBase<_Graph> Parent; |
|
| 869 | 876 |
protected: |
| 870 | 877 |
|
| 871 |
NodeFilterMap* _node_filter_map; |
|
| 872 |
EdgeFilterMap* _edge_filter_map; |
|
| 878 |
NF* _node_filter; |
|
| 879 |
EF* _edge_filter; |
|
| 873 | 880 |
|
| 874 | 881 |
SubGraphBase() |
| 875 |
: Parent(), _node_filter_map(0), _edge_filter_map(0) { }
|
|
| 876 |
|
|
| 877 |
void setNodeFilterMap(NodeFilterMap& node_filter_map) {
|
|
| 878 |
_node_filter_map=&node_filter_map; |
|
| 879 |
} |
|
| 880 |
void setEdgeFilterMap(EdgeFilterMap& edge_filter_map) {
|
|
| 881 |
|
|
| 882 |
: Parent(), _node_filter(0), _edge_filter(0) { }
|
|
| 883 |
|
|
| 884 |
void initialize(GR& graph, NF& node_filter, EF& edge_filter) {
|
|
| 885 |
Parent::initialize(graph); |
|
| 886 |
_node_filter = &node_filter; |
|
| 887 |
_edge_filter = &edge_filter; |
|
| 882 | 888 |
} |
| 883 | 889 |
|
| 884 | 890 |
public: |
| 885 | 891 |
|
| 886 | 892 |
typedef typename Parent::Node Node; |
| 887 | 893 |
typedef typename Parent::Arc Arc; |
| 888 | 894 |
typedef typename Parent::Edge Edge; |
| 889 | 895 |
|
| 890 | 896 |
void first(Node& i) const {
|
| 891 | 897 |
Parent::first(i); |
| 892 |
while (i!=INVALID && !(* |
|
| 898 |
while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
|
| 893 | 899 |
} |
| 894 | 900 |
|
| 895 | 901 |
void first(Arc& i) const {
|
| 896 | 902 |
Parent::first(i); |
| 897 |
while (i!=INVALID && (!(*_edge_filter_map)[i] |
|
| 898 |
|| !(*_node_filter_map)[Parent::source(i)] |
|
| 899 |
|
|
| 903 |
while (i!=INVALID && (!(*_edge_filter)[i] |
|
| 904 |
|| !(*_node_filter)[Parent::source(i)] |
|
| 905 |
|| !(*_node_filter)[Parent::target(i)])) |
|
| 900 | 906 |
Parent::next(i); |
| 901 | 907 |
} |
| 902 | 908 |
|
| 903 | 909 |
void first(Edge& i) const {
|
| 904 | 910 |
Parent::first(i); |
| 905 |
while (i!=INVALID && (!(*_edge_filter_map)[i] |
|
| 906 |
|| !(*_node_filter_map)[Parent::u(i)] |
|
| 907 |
|
|
| 911 |
while (i!=INVALID && (!(*_edge_filter)[i] |
|
| 912 |
|| !(*_node_filter)[Parent::u(i)] |
|
| 913 |
|| !(*_node_filter)[Parent::v(i)])) |
|
| 908 | 914 |
Parent::next(i); |
| 909 | 915 |
} |
| 910 | 916 |
|
| 911 | 917 |
void firstIn(Arc& i, const Node& n) const {
|
| 912 | 918 |
Parent::firstIn(i, n); |
| 913 |
while (i!=INVALID && (!(*_edge_filter_map)[i] |
|
| 914 |
|| !(*_node_filter_map)[Parent::source(i)])) |
|
| 919 |
while (i!=INVALID && (!(*_edge_filter)[i] |
|
| 920 |
|| !(*_node_filter)[Parent::source(i)])) |
|
| 915 | 921 |
Parent::nextIn(i); |
| 916 | 922 |
} |
| 917 | 923 |
|
| 918 | 924 |
void firstOut(Arc& i, const Node& n) const {
|
| 919 | 925 |
Parent::firstOut(i, n); |
| 920 |
while (i!=INVALID && (!(*_edge_filter_map)[i] |
|
| 921 |
|| !(*_node_filter_map)[Parent::target(i)])) |
|
| 926 |
while (i!=INVALID && (!(*_edge_filter)[i] |
|
| 927 |
|| !(*_node_filter)[Parent::target(i)])) |
|
| 922 | 928 |
Parent::nextOut(i); |
| 923 | 929 |
} |
| 924 | 930 |
|
| 925 | 931 |
void firstInc(Edge& i, bool& d, const Node& n) const {
|
| 926 | 932 |
Parent::firstInc(i, d, n); |
| 927 |
while (i!=INVALID && (!(*_edge_filter_map)[i] |
|
| 928 |
|| !(*_node_filter_map)[Parent::u(i)] |
|
| 929 |
|
|
| 933 |
while (i!=INVALID && (!(*_edge_filter)[i] |
|
| 934 |
|| !(*_node_filter)[Parent::u(i)] |
|
| 935 |
|| !(*_node_filter)[Parent::v(i)])) |
|
| 930 | 936 |
Parent::nextInc(i, d); |
| 931 | 937 |
} |
| 932 | 938 |
|
| 933 | 939 |
void next(Node& i) const {
|
| 934 | 940 |
Parent::next(i); |
| 935 |
while (i!=INVALID && !(* |
|
| 941 |
while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
|
| 936 | 942 |
} |
| 937 | 943 |
|
| 938 | 944 |
void next(Arc& i) const {
|
| 939 | 945 |
Parent::next(i); |
| 940 |
while (i!=INVALID && (!(*_edge_filter_map)[i] |
|
| 941 |
|| !(*_node_filter_map)[Parent::source(i)] |
|
| 942 |
|
|
| 946 |
while (i!=INVALID && (!(*_edge_filter)[i] |
|
| 947 |
|| !(*_node_filter)[Parent::source(i)] |
|
| 948 |
|| !(*_node_filter)[Parent::target(i)])) |
|
| 943 | 949 |
Parent::next(i); |
| 944 | 950 |
} |
| 945 | 951 |
|
| 946 | 952 |
void next(Edge& i) const {
|
| 947 | 953 |
Parent::next(i); |
| 948 |
while (i!=INVALID && (!(*_edge_filter_map)[i] |
|
| 949 |
|| !(*_node_filter_map)[Parent::u(i)] |
|
| 950 |
|
|
| 954 |
while (i!=INVALID && (!(*_edge_filter)[i] |
|
| 955 |
|| !(*_node_filter)[Parent::u(i)] |
|
| 956 |
|| !(*_node_filter)[Parent::v(i)])) |
|
| 951 | 957 |
Parent::next(i); |
| 952 | 958 |
} |
| 953 | 959 |
|
| 954 | 960 |
void nextIn(Arc& i) const {
|
| 955 | 961 |
Parent::nextIn(i); |
| 956 |
while (i!=INVALID && (!(*_edge_filter_map)[i] |
|
| 957 |
|| !(*_node_filter_map)[Parent::source(i)])) |
|
| 962 |
while (i!=INVALID && (!(*_edge_filter)[i] |
|
| 963 |
|| !(*_node_filter)[Parent::source(i)])) |
|
| 958 | 964 |
Parent::nextIn(i); |
| 959 | 965 |
} |
| 960 | 966 |
|
| 961 | 967 |
void nextOut(Arc& i) const {
|
| 962 | 968 |
Parent::nextOut(i); |
| 963 |
while (i!=INVALID && (!(*_edge_filter_map)[i] |
|
| 964 |
|| !(*_node_filter_map)[Parent::target(i)])) |
|
| 969 |
while (i!=INVALID && (!(*_edge_filter)[i] |
|
| 970 |
|| !(*_node_filter)[Parent::target(i)])) |
|
| 965 | 971 |
Parent::nextOut(i); |
| 966 | 972 |
} |
| 967 | 973 |
|
| 968 | 974 |
void nextInc(Edge& i, bool& d) const {
|
| 969 | 975 |
Parent::nextInc(i, d); |
| 970 |
while (i!=INVALID && (!(*_edge_filter_map)[i] |
|
| 971 |
|| !(*_node_filter_map)[Parent::u(i)] |
|
| 972 |
|
|
| 976 |
while (i!=INVALID && (!(*_edge_filter)[i] |
|
| 977 |
|| !(*_node_filter)[Parent::u(i)] |
|
| 978 |
|| !(*_node_filter)[Parent::v(i)])) |
|
| 973 | 979 |
Parent::nextInc(i, d); |
| 974 | 980 |
} |
| 975 | 981 |
|
| 976 |
void status(const Node& n, bool v) const { _node_filter_map->set(n, v); }
|
|
| 977 |
void status(const Edge& e, bool v) const { _edge_filter_map->set(e, v); }
|
|
| 978 |
|
|
| 979 |
bool status(const Node& n) const { return (*_node_filter_map)[n]; }
|
|
| 980 |
|
|
| 982 |
void status(const Node& n, bool v) const { _node_filter->set(n, v); }
|
|
| 983 |
void status(const Edge& e, bool v) const { _edge_filter->set(e, v); }
|
|
| 984 |
|
|
| 985 |
bool status(const Node& n) const { return (*_node_filter)[n]; }
|
|
| 986 |
bool status(const Edge& e) const { return (*_edge_filter)[e]; }
|
|
| 981 | 987 |
|
| 982 | 988 |
typedef False NodeNumTag; |
| 983 | 989 |
typedef False ArcNumTag; |
| 984 | 990 |
typedef False EdgeNumTag; |
| 985 | 991 |
|
| 986 | 992 |
typedef FindArcTagIndicator<Graph> FindArcTag; |
| 987 | 993 |
Arc findArc(const Node& u, const Node& v, |
| 988 | 994 |
const Arc& prev = INVALID) const {
|
| 989 |
if (!(* |
|
| 995 |
if (!(*_node_filter)[u] || !(*_node_filter)[v]) {
|
|
| 990 | 996 |
return INVALID; |
| 991 | 997 |
} |
| 992 | 998 |
Arc arc = Parent::findArc(u, v, prev); |
| 993 |
while (arc != INVALID && !(* |
|
| 999 |
while (arc != INVALID && !(*_edge_filter)[arc]) {
|
|
| 994 | 1000 |
arc = Parent::findArc(u, v, arc); |
| 995 | 1001 |
} |
| 996 | 1002 |
return arc; |
| 997 | 1003 |
} |
| 998 | 1004 |
|
| 999 | 1005 |
typedef FindEdgeTagIndicator<Graph> FindEdgeTag; |
| 1000 | 1006 |
Edge findEdge(const Node& u, const Node& v, |
| 1001 | 1007 |
const Edge& prev = INVALID) const {
|
| 1002 |
if (!(* |
|
| 1008 |
if (!(*_node_filter)[u] || !(*_node_filter)[v]) {
|
|
| 1003 | 1009 |
return INVALID; |
| 1004 | 1010 |
} |
| 1005 | 1011 |
Edge edge = Parent::findEdge(u, v, prev); |
| 1006 |
while (edge != INVALID && !(* |
|
| 1012 |
while (edge != INVALID && !(*_edge_filter)[edge]) {
|
|
| 1007 | 1013 |
edge = Parent::findEdge(u, v, edge); |
| 1008 | 1014 |
} |
| 1009 | 1015 |
return edge; |
| 1010 | 1016 |
} |
| 1011 | 1017 |
|
| 1012 |
template <typename _Value> |
|
| 1013 |
class NodeMap : public SubMapExtender<Adaptor, |
|
| 1014 |
|
|
| 1018 |
template <typename V> |
|
| 1019 |
class NodeMap |
|
| 1020 |
: public SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
|
| 1021 |
LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, NodeMap<V>)> {
|
|
| 1022 |
typedef SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
|
| 1023 |
LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, NodeMap<V>)> Parent; |
|
| 1024 |
|
|
| 1015 | 1025 |
public: |
| 1016 |
typedef _Value Value; |
|
| 1017 |
typedef SubMapExtender<Adaptor, typename Parent:: |
|
| 1018 |
template NodeMap<Value> > MapParent; |
|
| 1019 |
|
|
| 1020 |
NodeMap(const Adaptor& adaptor) |
|
| 1021 |
: MapParent(adaptor) {}
|
|
| 1022 |
NodeMap(const Adaptor& adaptor, const Value& value) |
|
| 1023 |
: MapParent(adaptor, value) {}
|
|
| 1026 |
typedef V Value; |
|
| 1027 |
|
|
| 1028 |
NodeMap(const SubGraphBase<GR, NF, EF, ch>& adaptor) |
|
| 1029 |
: Parent(adaptor) {}
|
|
| 1030 |
NodeMap(const SubGraphBase<GR, NF, EF, ch>& adaptor, const V& value) |
|
| 1031 |
: Parent(adaptor, value) {}
|
|
| 1024 | 1032 |
|
| 1025 | 1033 |
private: |
| 1026 | 1034 |
NodeMap& operator=(const NodeMap& cmap) {
|
| 1027 | 1035 |
return operator=<NodeMap>(cmap); |
| 1028 | 1036 |
} |
| 1029 | 1037 |
|
| 1030 | 1038 |
template <typename CMap> |
| 1031 | 1039 |
NodeMap& operator=(const CMap& cmap) {
|
| 1032 |
|
|
| 1040 |
Parent::operator=(cmap); |
|
| 1033 | 1041 |
return *this; |
| 1034 | 1042 |
} |
| 1035 | 1043 |
}; |
| 1036 | 1044 |
|
| 1037 |
template <typename _Value> |
|
| 1038 |
class ArcMap : public SubMapExtender<Adaptor, |
|
| 1039 |
|
|
| 1045 |
template <typename V> |
|
| 1046 |
class ArcMap |
|
| 1047 |
: public SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
|
| 1048 |
LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, ArcMap<V>)> {
|
|
| 1049 |
typedef SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
|
| 1050 |
LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, ArcMap<V>)> Parent; |
|
| 1051 |
|
|
| 1040 | 1052 |
public: |
| 1041 |
typedef _Value Value; |
|
| 1042 |
typedef SubMapExtender<Adaptor, typename Parent:: |
|
| 1043 |
template ArcMap<Value> > MapParent; |
|
| 1044 |
|
|
| 1045 |
ArcMap(const Adaptor& adaptor) |
|
| 1046 |
: MapParent(adaptor) {}
|
|
| 1047 |
ArcMap(const Adaptor& adaptor, const Value& value) |
|
| 1048 |
: MapParent(adaptor, value) {}
|
|
| 1053 |
typedef V Value; |
|
| 1054 |
|
|
| 1055 |
ArcMap(const SubGraphBase<GR, NF, EF, ch>& adaptor) |
|
| 1056 |
: Parent(adaptor) {}
|
|
| 1057 |
ArcMap(const SubGraphBase<GR, NF, EF, ch>& adaptor, const V& value) |
|
| 1058 |
: Parent(adaptor, value) {}
|
|
| 1049 | 1059 |
|
| 1050 | 1060 |
private: |
| 1051 | 1061 |
ArcMap& operator=(const ArcMap& cmap) {
|
| 1052 | 1062 |
return operator=<ArcMap>(cmap); |
| 1053 | 1063 |
} |
| 1054 | 1064 |
|
| 1055 | 1065 |
template <typename CMap> |
| 1056 | 1066 |
ArcMap& operator=(const CMap& cmap) {
|
| 1057 |
|
|
| 1067 |
Parent::operator=(cmap); |
|
| 1058 | 1068 |
return *this; |
| 1059 | 1069 |
} |
| 1060 | 1070 |
}; |
| 1061 | 1071 |
|
| 1062 |
template <typename _Value> |
|
| 1063 |
class EdgeMap : public SubMapExtender<Adaptor, |
|
| 1064 |
|
|
| 1072 |
template <typename V> |
|
| 1073 |
class EdgeMap |
|
| 1074 |
: public SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
|
| 1075 |
LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, EdgeMap<V>)> {
|
|
| 1076 |
typedef SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
|
| 1077 |
LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, EdgeMap<V>)> Parent; |
|
| 1078 |
|
|
| 1065 | 1079 |
public: |
| 1066 |
typedef _Value Value; |
|
| 1067 |
typedef SubMapExtender<Adaptor, typename Parent:: |
|
| 1068 |
template EdgeMap<Value> > MapParent; |
|
| 1069 |
|
|
| 1070 |
EdgeMap(const Adaptor& adaptor) |
|
| 1071 |
: MapParent(adaptor) {}
|
|
| 1072 |
|
|
| 1073 |
EdgeMap(const Adaptor& adaptor, const Value& value) |
|
| 1074 |
|
|
| 1080 |
typedef V Value; |
|
| 1081 |
|
|
| 1082 |
EdgeMap(const SubGraphBase<GR, NF, EF, ch>& adaptor) |
|
| 1083 |
: Parent(adaptor) {}
|
|
| 1084 |
|
|
| 1085 |
EdgeMap(const SubGraphBase<GR, NF, EF, ch>& adaptor, const V& value) |
|
| 1086 |
: Parent(adaptor, value) {}
|
|
| 1075 | 1087 |
|
| 1076 | 1088 |
private: |
| 1077 | 1089 |
EdgeMap& operator=(const EdgeMap& cmap) {
|
| 1078 | 1090 |
return operator=<EdgeMap>(cmap); |
| 1079 | 1091 |
} |
| 1080 | 1092 |
|
| 1081 | 1093 |
template <typename CMap> |
| 1082 | 1094 |
EdgeMap& operator=(const CMap& cmap) {
|
| 1083 |
|
|
| 1095 |
Parent::operator=(cmap); |
|
| 1084 | 1096 |
return *this; |
| 1085 | 1097 |
} |
| 1086 | 1098 |
}; |
| 1087 | 1099 |
|
| 1088 | 1100 |
}; |
| 1089 | 1101 |
|
| 1090 |
template <typename _Graph, typename _NodeFilterMap, typename _EdgeFilterMap> |
|
| 1091 |
class SubGraphBase<_Graph, _NodeFilterMap, _EdgeFilterMap, false> |
|
| 1092 |
|
|
| 1102 |
template <typename GR, typename NF, typename EF> |
|
| 1103 |
class SubGraphBase<GR, NF, EF, false> |
|
| 1104 |
: public GraphAdaptorBase<GR> {
|
|
| 1105 |
typedef GraphAdaptorBase<GR> Parent; |
|
| 1093 | 1106 |
public: |
| 1094 |
typedef _Graph Graph; |
|
| 1095 |
typedef _NodeFilterMap NodeFilterMap; |
|
| 1096 |
typedef |
|
| 1107 |
typedef GR Graph; |
|
| 1108 |
typedef NF NodeFilterMap; |
|
| 1109 |
typedef EF EdgeFilterMap; |
|
| 1097 | 1110 |
|
| 1098 | 1111 |
typedef SubGraphBase Adaptor; |
| 1099 |
typedef GraphAdaptorBase<_Graph> Parent; |
|
| 1100 | 1112 |
protected: |
| 1101 |
NodeFilterMap* _node_filter_map; |
|
| 1102 |
EdgeFilterMap* _edge_filter_map; |
|
| 1103 |
SubGraphBase() : Parent(), |
|
| 1104 |
_node_filter_map(0), _edge_filter_map(0) { }
|
|
| 1105 |
|
|
| 1106 |
void setNodeFilterMap(NodeFilterMap& node_filter_map) {
|
|
| 1107 |
_node_filter_map=&node_filter_map; |
|
| 1108 |
} |
|
| 1109 |
void setEdgeFilterMap(EdgeFilterMap& edge_filter_map) {
|
|
| 1110 |
_edge_filter_map=&edge_filter_map; |
|
| 1113 |
NF* _node_filter; |
|
| 1114 |
EF* _edge_filter; |
|
| 1115 |
SubGraphBase() |
|
| 1116 |
: Parent(), _node_filter(0), _edge_filter(0) { }
|
|
| 1117 |
|
|
| 1118 |
void initialize(GR& graph, NF& node_filter, EF& edge_filter) {
|
|
| 1119 |
Parent::initialize(graph); |
|
| 1120 |
_node_filter = &node_filter; |
|
| 1121 |
_edge_filter = &edge_filter; |
|
| 1111 | 1122 |
} |
| 1112 | 1123 |
|
| 1113 | 1124 |
public: |
| 1114 | 1125 |
|
| 1115 | 1126 |
typedef typename Parent::Node Node; |
| 1116 | 1127 |
typedef typename Parent::Arc Arc; |
| 1117 | 1128 |
typedef typename Parent::Edge Edge; |
| 1118 | 1129 |
|
| 1119 | 1130 |
void first(Node& i) const {
|
| 1120 | 1131 |
Parent::first(i); |
| 1121 |
while (i!=INVALID && !(* |
|
| 1132 |
while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
|
| 1122 | 1133 |
} |
| 1123 | 1134 |
|
| 1124 | 1135 |
void first(Arc& i) const {
|
| 1125 | 1136 |
Parent::first(i); |
| 1126 |
while (i!=INVALID && !(* |
|
| 1137 |
while (i!=INVALID && !(*_edge_filter)[i]) Parent::next(i); |
|
| 1127 | 1138 |
} |
| 1128 | 1139 |
|
| 1129 | 1140 |
void first(Edge& i) const {
|
| 1130 | 1141 |
Parent::first(i); |
| 1131 |
while (i!=INVALID && !(* |
|
| 1142 |
while (i!=INVALID && !(*_edge_filter)[i]) Parent::next(i); |
|
| 1132 | 1143 |
} |
| 1133 | 1144 |
|
| 1134 | 1145 |
void firstIn(Arc& i, const Node& n) const {
|
| 1135 | 1146 |
Parent::firstIn(i, n); |
| 1136 |
while (i!=INVALID && !(* |
|
| 1147 |
while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextIn(i); |
|
| 1137 | 1148 |
} |
| 1138 | 1149 |
|
| 1139 | 1150 |
void firstOut(Arc& i, const Node& n) const {
|
| 1140 | 1151 |
Parent::firstOut(i, n); |
| 1141 |
while (i!=INVALID && !(* |
|
| 1152 |
while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextOut(i); |
|
| 1142 | 1153 |
} |
| 1143 | 1154 |
|
| 1144 | 1155 |
void firstInc(Edge& i, bool& d, const Node& n) const {
|
| 1145 | 1156 |
Parent::firstInc(i, d, n); |
| 1146 |
while (i!=INVALID && !(* |
|
| 1157 |
while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextInc(i, d); |
|
| 1147 | 1158 |
} |
| 1148 | 1159 |
|
| 1149 | 1160 |
void next(Node& i) const {
|
| 1150 | 1161 |
Parent::next(i); |
| 1151 |
while (i!=INVALID && !(* |
|
| 1162 |
while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
|
| 1152 | 1163 |
} |
| 1153 | 1164 |
void next(Arc& i) const {
|
| 1154 | 1165 |
Parent::next(i); |
| 1155 |
while (i!=INVALID && !(* |
|
| 1166 |
while (i!=INVALID && !(*_edge_filter)[i]) Parent::next(i); |
|
| 1156 | 1167 |
} |
| 1157 | 1168 |
void next(Edge& i) const {
|
| 1158 | 1169 |
Parent::next(i); |
| 1159 |
while (i!=INVALID && !(* |
|
| 1170 |
while (i!=INVALID && !(*_edge_filter)[i]) Parent::next(i); |
|
| 1160 | 1171 |
} |
| 1161 | 1172 |
void nextIn(Arc& i) const {
|
| 1162 | 1173 |
Parent::nextIn(i); |
| 1163 |
while (i!=INVALID && !(* |
|
| 1174 |
while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextIn(i); |
|
| 1164 | 1175 |
} |
| 1165 | 1176 |
|
| 1166 | 1177 |
void nextOut(Arc& i) const {
|
| 1167 | 1178 |
Parent::nextOut(i); |
| 1168 |
while (i!=INVALID && !(* |
|
| 1179 |
while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextOut(i); |
|
| 1169 | 1180 |
} |
| 1170 | 1181 |
void nextInc(Edge& i, bool& d) const {
|
| 1171 | 1182 |
Parent::nextInc(i, d); |
| 1172 |
while (i!=INVALID && !(* |
|
| 1183 |
while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextInc(i, d); |
|
| 1173 | 1184 |
} |
| 1174 | 1185 |
|
| 1175 |
void status(const Node& n, bool v) const { _node_filter_map->set(n, v); }
|
|
| 1176 |
void status(const Edge& e, bool v) const { _edge_filter_map->set(e, v); }
|
|
| 1177 |
|
|
| 1178 |
bool status(const Node& n) const { return (*_node_filter_map)[n]; }
|
|
| 1179 |
|
|
| 1186 |
void status(const Node& n, bool v) const { _node_filter->set(n, v); }
|
|
| 1187 |
void status(const Edge& e, bool v) const { _edge_filter->set(e, v); }
|
|
| 1188 |
|
|
| 1189 |
bool status(const Node& n) const { return (*_node_filter)[n]; }
|
|
| 1190 |
bool status(const Edge& e) const { return (*_edge_filter)[e]; }
|
|
| 1180 | 1191 |
|
| 1181 | 1192 |
typedef False NodeNumTag; |
| 1182 | 1193 |
typedef False ArcNumTag; |
| 1183 | 1194 |
typedef False EdgeNumTag; |
| 1184 | 1195 |
|
| 1185 | 1196 |
typedef FindArcTagIndicator<Graph> FindArcTag; |
| 1186 | 1197 |
Arc findArc(const Node& u, const Node& v, |
| 1187 | 1198 |
const Arc& prev = INVALID) const {
|
| 1188 | 1199 |
Arc arc = Parent::findArc(u, v, prev); |
| 1189 |
while (arc != INVALID && !(* |
|
| 1200 |
while (arc != INVALID && !(*_edge_filter)[arc]) {
|
|
| 1190 | 1201 |
arc = Parent::findArc(u, v, arc); |
| 1191 | 1202 |
} |
| 1192 | 1203 |
return arc; |
| 1193 | 1204 |
} |
| 1194 | 1205 |
|
| 1195 | 1206 |
typedef FindEdgeTagIndicator<Graph> FindEdgeTag; |
| 1196 | 1207 |
Edge findEdge(const Node& u, const Node& v, |
| 1197 | 1208 |
const Edge& prev = INVALID) const {
|
| 1198 | 1209 |
Edge edge = Parent::findEdge(u, v, prev); |
| 1199 |
while (edge != INVALID && !(* |
|
| 1210 |
while (edge != INVALID && !(*_edge_filter)[edge]) {
|
|
| 1200 | 1211 |
edge = Parent::findEdge(u, v, edge); |
| 1201 | 1212 |
} |
| 1202 | 1213 |
return edge; |
| 1203 | 1214 |
} |
| 1204 | 1215 |
|
| 1205 |
template <typename _Value> |
|
| 1206 |
class NodeMap : public SubMapExtender<Adaptor, |
|
| 1207 |
|
|
| 1216 |
template <typename V> |
|
| 1217 |
class NodeMap |
|
| 1218 |
: public SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
|
| 1219 |
LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, NodeMap<V>)> {
|
|
| 1220 |
typedef SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
|
| 1221 |
LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, NodeMap<V>)> Parent; |
|
| 1222 |
|
|
| 1208 | 1223 |
public: |
| 1209 |
typedef _Value Value; |
|
| 1210 |
typedef SubMapExtender<Adaptor, typename Parent:: |
|
| 1211 |
template NodeMap<Value> > MapParent; |
|
| 1212 |
|
|
| 1213 |
NodeMap(const Adaptor& adaptor) |
|
| 1214 |
: MapParent(adaptor) {}
|
|
| 1215 |
NodeMap(const Adaptor& adaptor, const Value& value) |
|
| 1216 |
: MapParent(adaptor, value) {}
|
|
| 1224 |
typedef V Value; |
|
| 1225 |
|
|
| 1226 |
NodeMap(const SubGraphBase<GR, NF, EF, false>& adaptor) |
|
| 1227 |
: Parent(adaptor) {}
|
|
| 1228 |
NodeMap(const SubGraphBase<GR, NF, EF, false>& adaptor, const V& value) |
|
| 1229 |
: Parent(adaptor, value) {}
|
|
| 1217 | 1230 |
|
| 1218 | 1231 |
private: |
| 1219 | 1232 |
NodeMap& operator=(const NodeMap& cmap) {
|
| 1220 | 1233 |
return operator=<NodeMap>(cmap); |
| 1221 | 1234 |
} |
| 1222 | 1235 |
|
| 1223 | 1236 |
template <typename CMap> |
| 1224 | 1237 |
NodeMap& operator=(const CMap& cmap) {
|
| 1225 |
|
|
| 1238 |
Parent::operator=(cmap); |
|
| 1226 | 1239 |
return *this; |
| 1227 | 1240 |
} |
| 1228 | 1241 |
}; |
| 1229 | 1242 |
|
| 1230 |
template <typename _Value> |
|
| 1231 |
class ArcMap : public SubMapExtender<Adaptor, |
|
| 1232 |
|
|
| 1243 |
template <typename V> |
|
| 1244 |
class ArcMap |
|
| 1245 |
: public SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
|
| 1246 |
LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, ArcMap<V>)> {
|
|
| 1247 |
typedef SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
|
| 1248 |
LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, ArcMap<V>)> Parent; |
|
| 1249 |
|
|
| 1233 | 1250 |
public: |
| 1234 |
typedef _Value Value; |
|
| 1235 |
typedef SubMapExtender<Adaptor, typename Parent:: |
|
| 1236 |
template ArcMap<Value> > MapParent; |
|
| 1237 |
|
|
| 1238 |
ArcMap(const Adaptor& adaptor) |
|
| 1239 |
: MapParent(adaptor) {}
|
|
| 1240 |
ArcMap(const Adaptor& adaptor, const Value& value) |
|
| 1241 |
: MapParent(adaptor, value) {}
|
|
| 1251 |
typedef V Value; |
|
| 1252 |
|
|
| 1253 |
ArcMap(const SubGraphBase<GR, NF, EF, false>& adaptor) |
|
| 1254 |
: Parent(adaptor) {}
|
|
| 1255 |
ArcMap(const SubGraphBase<GR, NF, EF, false>& adaptor, const V& value) |
|
| 1256 |
: Parent(adaptor, value) {}
|
|
| 1242 | 1257 |
|
| 1243 | 1258 |
private: |
| 1244 | 1259 |
ArcMap& operator=(const ArcMap& cmap) {
|
| 1245 | 1260 |
return operator=<ArcMap>(cmap); |
| 1246 | 1261 |
} |
| 1247 | 1262 |
|
| 1248 | 1263 |
template <typename CMap> |
| 1249 | 1264 |
ArcMap& operator=(const CMap& cmap) {
|
| 1250 |
|
|
| 1265 |
Parent::operator=(cmap); |
|
| 1251 | 1266 |
return *this; |
| 1252 | 1267 |
} |
| 1253 | 1268 |
}; |
| 1254 | 1269 |
|
| 1255 |
template <typename _Value> |
|
| 1256 |
class EdgeMap : public SubMapExtender<Adaptor, |
|
| 1257 |
|
|
| 1270 |
template <typename V> |
|
| 1271 |
class EdgeMap |
|
| 1272 |
: public SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
|
| 1273 |
LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, EdgeMap<V>)> {
|
|
| 1274 |
typedef SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
|
| 1275 |
LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, EdgeMap<V>)> Parent; |
|
| 1276 |
|
|
| 1258 | 1277 |
public: |
| 1259 |
typedef _Value Value; |
|
| 1260 |
typedef SubMapExtender<Adaptor, typename Parent:: |
|
| 1261 |
template EdgeMap<Value> > MapParent; |
|
| 1262 |
|
|
| 1263 |
EdgeMap(const Adaptor& adaptor) |
|
| 1264 |
: MapParent(adaptor) {}
|
|
| 1265 |
|
|
| 1266 |
EdgeMap(const Adaptor& adaptor, const _Value& value) |
|
| 1267 |
|
|
| 1278 |
typedef V Value; |
|
| 1279 |
|
|
| 1280 |
EdgeMap(const SubGraphBase<GR, NF, EF, false>& adaptor) |
|
| 1281 |
: Parent(adaptor) {}
|
|
| 1282 |
|
|
| 1283 |
EdgeMap(const SubGraphBase<GR, NF, EF, false>& adaptor, const V& value) |
|
| 1284 |
: Parent(adaptor, value) {}
|
|
| 1268 | 1285 |
|
| 1269 | 1286 |
private: |
| 1270 | 1287 |
EdgeMap& operator=(const EdgeMap& cmap) {
|
| 1271 | 1288 |
return operator=<EdgeMap>(cmap); |
| 1272 | 1289 |
} |
| 1273 | 1290 |
|
| 1274 | 1291 |
template <typename CMap> |
| 1275 | 1292 |
EdgeMap& operator=(const CMap& cmap) {
|
| 1276 |
|
|
| 1293 |
Parent::operator=(cmap); |
|
| 1277 | 1294 |
return *this; |
| 1278 | 1295 |
} |
| 1279 | 1296 |
}; |
| 1280 | 1297 |
|
| 1281 | 1298 |
}; |
| 1282 | 1299 |
|
| 1283 | 1300 |
/// \ingroup graph_adaptors |
| 1284 | 1301 |
/// |
| 1285 | 1302 |
/// \brief Adaptor class for hiding nodes and edges in an undirected |
| 1286 | 1303 |
/// graph. |
| 1287 | 1304 |
/// |
| 1288 | 1305 |
/// SubGraph can be used for hiding nodes and edges in a graph. |
| 1289 | 1306 |
/// A \c bool node map and a \c bool edge map must be specified, which |
| 1290 | 1307 |
/// define the filters for nodes and edges. |
| 1291 | 1308 |
/// Only the nodes and edges with \c true filter value are |
| 1292 | 1309 |
/// shown in the subgraph. The edges that are incident to hidden |
| 1293 | 1310 |
/// nodes are also filtered out. |
| 1294 | 1311 |
/// This adaptor conforms to the \ref concepts::Graph "Graph" concept. |
| 1295 | 1312 |
/// |
| 1296 | 1313 |
/// The adapted graph can also be modified through this adaptor |
| 1297 | 1314 |
/// by adding or removing nodes or edges, unless the \c GR template |
| 1298 | 1315 |
/// parameter is set to be \c const. |
| 1299 | 1316 |
/// |
| 1300 | 1317 |
/// \tparam GR The type of the adapted graph. |
| 1301 | 1318 |
/// It must conform to the \ref concepts::Graph "Graph" concept. |
| 1302 | 1319 |
/// It can also be specified to be \c const. |
| 1303 | 1320 |
/// \tparam NF The type of the node filter map. |
| 1304 | 1321 |
/// It must be a \c bool (or convertible) node map of the |
| 1305 | 1322 |
/// adapted graph. The default type is |
| 1306 | 1323 |
/// \ref concepts::Graph::NodeMap "GR::NodeMap<bool>". |
| 1307 | 1324 |
/// \tparam EF The type of the edge filter map. |
| 1308 | 1325 |
/// It must be a \c bool (or convertible) edge map of the |
| 1309 | 1326 |
/// adapted graph. The default type is |
| 1310 | 1327 |
/// \ref concepts::Graph::EdgeMap "GR::EdgeMap<bool>". |
| 1311 | 1328 |
/// |
| 1312 | 1329 |
/// \note The \c Node, \c Edge and \c Arc types of this adaptor and the |
| 1313 | 1330 |
/// adapted graph are convertible to each other. |
| 1314 | 1331 |
/// |
| 1315 | 1332 |
/// \see FilterNodes |
| 1316 | 1333 |
/// \see FilterEdges |
| 1317 | 1334 |
#ifdef DOXYGEN |
| 1318 | 1335 |
template<typename GR, typename NF, typename EF> |
| 1319 | 1336 |
class SubGraph {
|
| 1320 | 1337 |
#else |
| 1321 | 1338 |
template<typename GR, |
| 1322 | 1339 |
typename NF = typename GR::template NodeMap<bool>, |
| 1323 | 1340 |
typename EF = typename GR::template EdgeMap<bool> > |
| 1324 | 1341 |
class SubGraph : |
| 1325 | 1342 |
public GraphAdaptorExtender<SubGraphBase<GR, NF, EF, true> > {
|
| 1326 | 1343 |
#endif |
| 1327 | 1344 |
public: |
| 1328 | 1345 |
/// The type of the adapted graph. |
| 1329 | 1346 |
typedef GR Graph; |
| 1330 | 1347 |
/// The type of the node filter map. |
| 1331 | 1348 |
typedef NF NodeFilterMap; |
| 1332 | 1349 |
/// The type of the edge filter map. |
| 1333 | 1350 |
typedef EF EdgeFilterMap; |
| 1334 | 1351 |
|
| 1335 |
typedef GraphAdaptorExtender< |
|
| 1352 |
typedef GraphAdaptorExtender<SubGraphBase<GR, NF, EF, true> > |
|
| 1336 | 1353 |
Parent; |
| 1337 | 1354 |
|
| 1338 | 1355 |
typedef typename Parent::Node Node; |
| 1339 | 1356 |
typedef typename Parent::Edge Edge; |
| 1340 | 1357 |
|
| 1341 | 1358 |
protected: |
| 1342 | 1359 |
SubGraph() { }
|
| 1343 | 1360 |
public: |
| 1344 | 1361 |
|
| 1345 | 1362 |
/// \brief Constructor |
| 1346 | 1363 |
/// |
| 1347 | 1364 |
/// Creates a subgraph for the given graph with the given node |
| 1348 | 1365 |
/// and edge filter maps. |
| 1349 |
SubGraph(Graph& graph, NodeFilterMap& node_filter_map, |
|
| 1350 |
EdgeFilterMap& edge_filter_map) {
|
|
| 1351 |
setGraph(graph); |
|
| 1352 |
setNodeFilterMap(node_filter_map); |
|
| 1353 |
|
|
| 1366 |
SubGraph(GR& graph, NF& node_filter, EF& edge_filter) {
|
|
| 1367 |
initialize(graph, node_filter, edge_filter); |
|
| 1354 | 1368 |
} |
| 1355 | 1369 |
|
| 1356 | 1370 |
/// \brief Sets the status of the given node |
| 1357 | 1371 |
/// |
| 1358 | 1372 |
/// This function sets the status of the given node. |
| 1359 | 1373 |
/// It is done by simply setting the assigned value of \c n |
| 1360 | 1374 |
/// to \c v in the node filter map. |
| 1361 | 1375 |
void status(const Node& n, bool v) const { Parent::status(n, v); }
|
| 1362 | 1376 |
|
| 1363 | 1377 |
/// \brief Sets the status of the given edge |
| 1364 | 1378 |
/// |
| 1365 | 1379 |
/// This function sets the status of the given edge. |
| 1366 | 1380 |
/// It is done by simply setting the assigned value of \c e |
| 1367 | 1381 |
/// to \c v in the edge filter map. |
| 1368 | 1382 |
void status(const Edge& e, bool v) const { Parent::status(e, v); }
|
| 1369 | 1383 |
|
| 1370 | 1384 |
/// \brief Returns the status of the given node |
| 1371 | 1385 |
/// |
| 1372 | 1386 |
/// This function returns the status of the given node. |
| 1373 | 1387 |
/// It is \c true if the given node is enabled (i.e. not hidden). |
| 1374 | 1388 |
bool status(const Node& n) const { return Parent::status(n); }
|
| 1375 | 1389 |
|
| 1376 | 1390 |
/// \brief Returns the status of the given edge |
| 1377 | 1391 |
/// |
| 1378 | 1392 |
/// This function returns the status of the given edge. |
| 1379 | 1393 |
/// It is \c true if the given edge is enabled (i.e. not hidden). |
| 1380 | 1394 |
bool status(const Edge& e) const { return Parent::status(e); }
|
| 1381 | 1395 |
|
| 1382 | 1396 |
/// \brief Disables the given node |
| 1383 | 1397 |
/// |
| 1384 | 1398 |
/// This function disables the given node in the subdigraph, |
| 1385 | 1399 |
/// so the iteration jumps over it. |
| 1386 | 1400 |
/// It is the same as \ref status() "status(n, false)". |
| 1387 | 1401 |
void disable(const Node& n) const { Parent::status(n, false); }
|
| 1388 | 1402 |
|
| 1389 | 1403 |
/// \brief Disables the given edge |
| 1390 | 1404 |
/// |
| 1391 | 1405 |
/// This function disables the given edge in the subgraph, |
| 1392 | 1406 |
/// so the iteration jumps over it. |
| 1393 | 1407 |
/// It is the same as \ref status() "status(e, false)". |
| 1394 | 1408 |
void disable(const Edge& e) const { Parent::status(e, false); }
|
| 1395 | 1409 |
|
| 1396 | 1410 |
/// \brief Enables the given node |
| 1397 | 1411 |
/// |
| 1398 | 1412 |
/// This function enables the given node in the subdigraph. |
| 1399 | 1413 |
/// It is the same as \ref status() "status(n, true)". |
| 1400 | 1414 |
void enable(const Node& n) const { Parent::status(n, true); }
|
| 1401 | 1415 |
|
| 1402 | 1416 |
/// \brief Enables the given edge |
| 1403 | 1417 |
/// |
| 1404 | 1418 |
/// This function enables the given edge in the subgraph. |
| 1405 | 1419 |
/// It is the same as \ref status() "status(e, true)". |
| 1406 | 1420 |
void enable(const Edge& e) const { Parent::status(e, true); }
|
| 1407 | 1421 |
|
| 1408 | 1422 |
}; |
| 1409 | 1423 |
|
| 1410 | 1424 |
/// \brief Returns a read-only SubGraph adaptor |
| 1411 | 1425 |
/// |
| 1412 | 1426 |
/// This function just returns a read-only \ref SubGraph adaptor. |
| 1413 | 1427 |
/// \ingroup graph_adaptors |
| 1414 | 1428 |
/// \relates SubGraph |
| 1415 | 1429 |
template<typename GR, typename NF, typename EF> |
| 1416 | 1430 |
SubGraph<const GR, NF, EF> |
| 1417 |
subGraph(const GR& graph, |
|
| 1418 |
NF& node_filter_map, EF& edge_filter_map) {
|
|
| 1431 |
subGraph(const GR& graph, NF& node_filter, EF& edge_filter) {
|
|
| 1419 | 1432 |
return SubGraph<const GR, NF, EF> |
| 1420 |
(graph, |
|
| 1433 |
(graph, node_filter, edge_filter); |
|
| 1421 | 1434 |
} |
| 1422 | 1435 |
|
| 1423 | 1436 |
template<typename GR, typename NF, typename EF> |
| 1424 | 1437 |
SubGraph<const GR, const NF, EF> |
| 1425 |
subGraph(const GR& graph, |
|
| 1426 |
const NF& node_filter_map, EF& edge_filter_map) {
|
|
| 1438 |
subGraph(const GR& graph, const NF& node_filter, EF& edge_filter) {
|
|
| 1427 | 1439 |
return SubGraph<const GR, const NF, EF> |
| 1428 |
(graph, |
|
| 1440 |
(graph, node_filter, edge_filter); |
|
| 1429 | 1441 |
} |
| 1430 | 1442 |
|
| 1431 | 1443 |
template<typename GR, typename NF, typename EF> |
| 1432 | 1444 |
SubGraph<const GR, NF, const EF> |
| 1433 |
subGraph(const GR& graph, |
|
| 1434 |
NF& node_filter_map, const EF& edge_filter_map) {
|
|
| 1445 |
subGraph(const GR& graph, NF& node_filter, const EF& edge_filter) {
|
|
| 1435 | 1446 |
return SubGraph<const GR, NF, const EF> |
| 1436 |
(graph, |
|
| 1447 |
(graph, node_filter, edge_filter); |
|
| 1437 | 1448 |
} |
| 1438 | 1449 |
|
| 1439 | 1450 |
template<typename GR, typename NF, typename EF> |
| 1440 | 1451 |
SubGraph<const GR, const NF, const EF> |
| 1441 |
subGraph(const GR& graph, |
|
| 1442 |
const NF& node_filter_map, const EF& edge_filter_map) {
|
|
| 1452 |
subGraph(const GR& graph, const NF& node_filter, const EF& edge_filter) {
|
|
| 1443 | 1453 |
return SubGraph<const GR, const NF, const EF> |
| 1444 |
(graph, |
|
| 1454 |
(graph, node_filter, edge_filter); |
|
| 1445 | 1455 |
} |
| 1446 | 1456 |
|
| 1447 | 1457 |
|
| 1448 | 1458 |
/// \ingroup graph_adaptors |
| 1449 | 1459 |
/// |
| 1450 | 1460 |
/// \brief Adaptor class for hiding nodes in a digraph or a graph. |
| 1451 | 1461 |
/// |
| 1452 | 1462 |
/// FilterNodes adaptor can be used for hiding nodes in a digraph or a |
| 1453 | 1463 |
/// graph. A \c bool node map must be specified, which defines the filter |
| 1454 | 1464 |
/// for the nodes. Only the nodes with \c true filter value and the |
| 1455 | 1465 |
/// arcs/edges incident to nodes both with \c true filter value are shown |
| 1456 | 1466 |
/// in the subgraph. This adaptor conforms to the \ref concepts::Digraph |
| 1457 | 1467 |
/// "Digraph" concept or the \ref concepts::Graph "Graph" concept |
| 1458 | 1468 |
/// depending on the \c GR template parameter. |
| 1459 | 1469 |
/// |
| 1460 | 1470 |
/// The adapted (di)graph can also be modified through this adaptor |
| 1461 | 1471 |
/// by adding or removing nodes or arcs/edges, unless the \c GR template |
| 1462 | 1472 |
/// parameter is set to be \c const. |
| 1463 | 1473 |
/// |
| 1464 | 1474 |
/// \tparam GR The type of the adapted digraph or graph. |
| 1465 | 1475 |
/// It must conform to the \ref concepts::Digraph "Digraph" concept |
| 1466 | 1476 |
/// or the \ref concepts::Graph "Graph" concept. |
| 1467 | 1477 |
/// It can also be specified to be \c const. |
| 1468 | 1478 |
/// \tparam NF The type of the node filter map. |
| 1469 | 1479 |
/// It must be a \c bool (or convertible) node map of the |
| 1470 | 1480 |
/// adapted (di)graph. The default type is |
| 1471 | 1481 |
/// \ref concepts::Graph::NodeMap "GR::NodeMap<bool>". |
| 1472 | 1482 |
/// |
| 1473 | 1483 |
/// \note The \c Node and <tt>Arc/Edge</tt> types of this adaptor and the |
| 1474 | 1484 |
/// adapted (di)graph are convertible to each other. |
| 1475 | 1485 |
#ifdef DOXYGEN |
| 1476 | 1486 |
template<typename GR, typename NF> |
| 1477 | 1487 |
class FilterNodes {
|
| 1478 | 1488 |
#else |
| 1479 | 1489 |
template<typename GR, |
| 1480 | 1490 |
typename NF = typename GR::template NodeMap<bool>, |
| 1481 | 1491 |
typename Enable = void> |
| 1482 | 1492 |
class FilterNodes : |
| 1483 | 1493 |
public DigraphAdaptorExtender< |
| 1484 |
SubDigraphBase<GR, NF, ConstMap<typename GR::Arc, bool |
|
| 1494 |
SubDigraphBase<GR, NF, ConstMap<typename GR::Arc, Const<bool, true> >, |
|
| 1495 |
true> > {
|
|
| 1485 | 1496 |
#endif |
| 1497 |
typedef DigraphAdaptorExtender< |
|
| 1498 |
SubDigraphBase<GR, NF, ConstMap<typename GR::Arc, Const<bool, true> >, |
|
| 1499 |
true> > Parent; |
|
| 1500 |
|
|
| 1486 | 1501 |
public: |
| 1487 | 1502 |
|
| 1488 | 1503 |
typedef GR Digraph; |
| 1489 | 1504 |
typedef NF NodeFilterMap; |
| 1490 | 1505 |
|
| 1491 |
typedef DigraphAdaptorExtender< |
|
| 1492 |
SubDigraphBase<GR, NF, ConstMap<typename GR::Arc, bool>, true> > |
|
| 1493 |
Parent; |
|
| 1494 |
|
|
| 1495 | 1506 |
typedef typename Parent::Node Node; |
| 1496 | 1507 |
|
| 1497 | 1508 |
protected: |
| 1498 |
ConstMap<typename Digraph::Arc, bool> const_true_map; |
|
| 1499 |
|
|
| 1500 |
FilterNodes() : const_true_map(true) {
|
|
| 1501 |
Parent::setArcFilterMap(const_true_map); |
|
| 1502 |
|
|
| 1509 |
ConstMap<typename Digraph::Arc, Const<bool, true> > const_true_map; |
|
| 1510 |
|
|
| 1511 |
FilterNodes() : const_true_map() {}
|
|
| 1503 | 1512 |
|
| 1504 | 1513 |
public: |
| 1505 | 1514 |
|
| 1506 | 1515 |
/// \brief Constructor |
| 1507 | 1516 |
/// |
| 1508 | 1517 |
/// Creates a subgraph for the given digraph or graph with the |
| 1509 | 1518 |
/// given node filter map. |
| 1510 |
FilterNodes(GR& graph, NodeFilterMap& node_filter) : |
|
| 1511 |
Parent(), const_true_map(true) |
|
| 1519 |
FilterNodes(GR& graph, NF& node_filter) |
|
| 1520 |
: Parent(), const_true_map() |
|
| 1512 | 1521 |
{
|
| 1513 |
Parent::setDigraph(graph); |
|
| 1514 |
Parent::setNodeFilterMap(node_filter); |
|
| 1515 |
Parent:: |
|
| 1522 |
Parent::initialize(graph, node_filter, const_true_map); |
|
| 1516 | 1523 |
} |
| 1517 | 1524 |
|
| 1518 | 1525 |
/// \brief Sets the status of the given node |
| 1519 | 1526 |
/// |
| 1520 | 1527 |
/// This function sets the status of the given node. |
| 1521 | 1528 |
/// It is done by simply setting the assigned value of \c n |
| 1522 | 1529 |
/// to \c v in the node filter map. |
| 1523 | 1530 |
void status(const Node& n, bool v) const { Parent::status(n, v); }
|
| 1524 | 1531 |
|
| 1525 | 1532 |
/// \brief Returns the status of the given node |
| 1526 | 1533 |
/// |
| 1527 | 1534 |
/// This function returns the status of the given node. |
| 1528 | 1535 |
/// It is \c true if the given node is enabled (i.e. not hidden). |
| 1529 | 1536 |
bool status(const Node& n) const { return Parent::status(n); }
|
| 1530 | 1537 |
|
| 1531 | 1538 |
/// \brief Disables the given node |
| 1532 | 1539 |
/// |
| 1533 | 1540 |
/// This function disables the given node, so the iteration |
| 1534 | 1541 |
/// jumps over it. |
| 1535 | 1542 |
/// It is the same as \ref status() "status(n, false)". |
| 1536 | 1543 |
void disable(const Node& n) const { Parent::status(n, false); }
|
| 1537 | 1544 |
|
| 1538 | 1545 |
/// \brief Enables the given node |
| 1539 | 1546 |
/// |
| 1540 | 1547 |
/// This function enables the given node. |
| 1541 | 1548 |
/// It is the same as \ref status() "status(n, true)". |
| 1542 | 1549 |
void enable(const Node& n) const { Parent::status(n, true); }
|
| 1543 | 1550 |
|
| 1544 | 1551 |
}; |
| 1545 | 1552 |
|
| 1546 | 1553 |
template<typename GR, typename NF> |
| 1547 | 1554 |
class FilterNodes<GR, NF, |
| 1548 | 1555 |
typename enable_if<UndirectedTagIndicator<GR> >::type> : |
| 1549 | 1556 |
public GraphAdaptorExtender< |
| 1550 |
SubGraphBase<GR, NF, ConstMap<typename GR::Edge, bool |
|
| 1557 |
SubGraphBase<GR, NF, ConstMap<typename GR::Edge, Const<bool, true> >, |
|
| 1558 |
true> > {
|
|
| 1559 |
|
|
| 1560 |
typedef GraphAdaptorExtender< |
|
| 1561 |
SubGraphBase<GR, NF, ConstMap<typename GR::Edge, Const<bool, true> >, |
|
| 1562 |
true> > Parent; |
|
| 1551 | 1563 |
|
| 1552 | 1564 |
public: |
| 1565 |
|
|
| 1553 | 1566 |
typedef GR Graph; |
| 1554 | 1567 |
typedef NF NodeFilterMap; |
| 1555 |
typedef GraphAdaptorExtender< |
|
| 1556 |
SubGraphBase<GR, NF, ConstMap<typename GR::Edge, bool>, true> > |
|
| 1557 |
Parent; |
|
| 1558 | 1568 |
|
| 1559 | 1569 |
typedef typename Parent::Node Node; |
| 1570 |
|
|
| 1560 | 1571 |
protected: |
| 1561 |
ConstMap<typename Graph::Edge, bool> const_true_map; |
|
| 1562 |
|
|
| 1563 |
FilterNodes() : const_true_map(true) {
|
|
| 1564 |
Parent::setEdgeFilterMap(const_true_map); |
|
| 1565 |
|
|
| 1572 |
ConstMap<typename GR::Edge, Const<bool, true> > const_true_map; |
|
| 1573 |
|
|
| 1574 |
FilterNodes() : const_true_map() {}
|
|
| 1566 | 1575 |
|
| 1567 | 1576 |
public: |
| 1568 | 1577 |
|
| 1569 |
FilterNodes(Graph& _graph, NodeFilterMap& node_filter_map) : |
|
| 1570 |
Parent(), const_true_map(true) {
|
|
| 1571 |
Parent::setGraph(_graph); |
|
| 1572 |
Parent::setNodeFilterMap(node_filter_map); |
|
| 1573 |
|
|
| 1578 |
FilterNodes(GR& graph, NodeFilterMap& node_filter) : |
|
| 1579 |
Parent(), const_true_map() {
|
|
| 1580 |
Parent::initialize(graph, node_filter, const_true_map); |
|
| 1574 | 1581 |
} |
| 1575 | 1582 |
|
| 1576 | 1583 |
void status(const Node& n, bool v) const { Parent::status(n, v); }
|
| 1577 | 1584 |
bool status(const Node& n) const { return Parent::status(n); }
|
| 1578 | 1585 |
void disable(const Node& n) const { Parent::status(n, false); }
|
| 1579 | 1586 |
void enable(const Node& n) const { Parent::status(n, true); }
|
| 1580 | 1587 |
|
| 1581 | 1588 |
}; |
| 1582 | 1589 |
|
| 1583 | 1590 |
|
| 1584 | 1591 |
/// \brief Returns a read-only FilterNodes adaptor |
| 1585 | 1592 |
/// |
| 1586 | 1593 |
/// This function just returns a read-only \ref FilterNodes adaptor. |
| 1587 | 1594 |
/// \ingroup graph_adaptors |
| 1588 | 1595 |
/// \relates FilterNodes |
| 1589 | 1596 |
template<typename GR, typename NF> |
| 1590 | 1597 |
FilterNodes<const GR, NF> |
| 1591 |
filterNodes(const GR& graph, NF& node_filter_map) {
|
|
| 1592 |
return FilterNodes<const GR, NF>(graph, node_filter_map); |
|
| 1598 |
filterNodes(const GR& graph, NF& node_filter) {
|
|
| 1599 |
return FilterNodes<const GR, NF>(graph, node_filter); |
|
| 1593 | 1600 |
} |
| 1594 | 1601 |
|
| 1595 | 1602 |
template<typename GR, typename NF> |
| 1596 | 1603 |
FilterNodes<const GR, const NF> |
| 1597 |
filterNodes(const GR& graph, const NF& node_filter_map) {
|
|
| 1598 |
return FilterNodes<const GR, const NF>(graph, node_filter_map); |
|
| 1604 |
filterNodes(const GR& graph, const NF& node_filter) {
|
|
| 1605 |
return FilterNodes<const GR, const NF>(graph, node_filter); |
|
| 1599 | 1606 |
} |
| 1600 | 1607 |
|
| 1601 | 1608 |
/// \ingroup graph_adaptors |
| 1602 | 1609 |
/// |
| 1603 | 1610 |
/// \brief Adaptor class for hiding arcs in a digraph. |
| 1604 | 1611 |
/// |
| 1605 | 1612 |
/// FilterArcs adaptor can be used for hiding arcs in a digraph. |
| 1606 | 1613 |
/// A \c bool arc map must be specified, which defines the filter for |
| 1607 | 1614 |
/// the arcs. Only the arcs with \c true filter value are shown in the |
| 1608 | 1615 |
/// subdigraph. This adaptor conforms to the \ref concepts::Digraph |
| 1609 | 1616 |
/// "Digraph" concept. |
| 1610 | 1617 |
/// |
| 1611 | 1618 |
/// The adapted digraph can also be modified through this adaptor |
| 1612 | 1619 |
/// by adding or removing nodes or arcs, unless the \c GR template |
| 1613 | 1620 |
/// parameter is set to be \c const. |
| 1614 | 1621 |
/// |
| 1615 |
/// \tparam |
|
| 1622 |
/// \tparam DGR The type of the adapted digraph. |
|
| 1616 | 1623 |
/// It must conform to the \ref concepts::Digraph "Digraph" concept. |
| 1617 | 1624 |
/// It can also be specified to be \c const. |
| 1618 | 1625 |
/// \tparam AF The type of the arc filter map. |
| 1619 | 1626 |
/// It must be a \c bool (or convertible) arc map of the |
| 1620 | 1627 |
/// adapted digraph. The default type is |
| 1621 |
/// \ref concepts::Digraph::ArcMap " |
|
| 1628 |
/// \ref concepts::Digraph::ArcMap "DGR::ArcMap<bool>". |
|
| 1622 | 1629 |
/// |
| 1623 | 1630 |
/// \note The \c Node and \c Arc types of this adaptor and the adapted |
| 1624 | 1631 |
/// digraph are convertible to each other. |
| 1625 | 1632 |
#ifdef DOXYGEN |
| 1626 |
template<typename |
|
| 1633 |
template<typename DGR, |
|
| 1627 | 1634 |
typename AF> |
| 1628 | 1635 |
class FilterArcs {
|
| 1629 | 1636 |
#else |
| 1630 |
template<typename GR, |
|
| 1631 |
typename AF = typename GR::template ArcMap<bool> > |
|
| 1637 |
template<typename DGR, |
|
| 1638 |
typename AF = typename DGR::template ArcMap<bool> > |
|
| 1632 | 1639 |
class FilterArcs : |
| 1633 | 1640 |
public DigraphAdaptorExtender< |
| 1634 |
SubDigraphBase< |
|
| 1641 |
SubDigraphBase<DGR, ConstMap<typename DGR::Node, Const<bool, true> >, |
|
| 1642 |
AF, false> > {
|
|
| 1635 | 1643 |
#endif |
| 1644 |
typedef DigraphAdaptorExtender< |
|
| 1645 |
SubDigraphBase<DGR, ConstMap<typename DGR::Node, Const<bool, true> >, |
|
| 1646 |
AF, false> > Parent; |
|
| 1647 |
|
|
| 1636 | 1648 |
public: |
| 1649 |
|
|
| 1637 | 1650 |
/// The type of the adapted digraph. |
| 1638 |
typedef |
|
| 1651 |
typedef DGR Digraph; |
|
| 1639 | 1652 |
/// The type of the arc filter map. |
| 1640 | 1653 |
typedef AF ArcFilterMap; |
| 1641 | 1654 |
|
| 1642 |
typedef DigraphAdaptorExtender< |
|
| 1643 |
SubDigraphBase<GR, ConstMap<typename GR::Node, bool>, AF, false> > |
|
| 1644 |
Parent; |
|
| 1645 |
|
|
| 1646 | 1655 |
typedef typename Parent::Arc Arc; |
| 1647 | 1656 |
|
| 1648 | 1657 |
protected: |
| 1649 |
ConstMap<typename Digraph::Node, bool> const_true_map; |
|
| 1650 |
|
|
| 1651 |
FilterArcs() : const_true_map(true) {
|
|
| 1652 |
Parent::setNodeFilterMap(const_true_map); |
|
| 1653 |
|
|
| 1658 |
ConstMap<typename DGR::Node, Const<bool, true> > const_true_map; |
|
| 1659 |
|
|
| 1660 |
FilterArcs() : const_true_map() {}
|
|
| 1654 | 1661 |
|
| 1655 | 1662 |
public: |
| 1656 | 1663 |
|
| 1657 | 1664 |
/// \brief Constructor |
| 1658 | 1665 |
/// |
| 1659 | 1666 |
/// Creates a subdigraph for the given digraph with the given arc |
| 1660 | 1667 |
/// filter map. |
| 1661 |
FilterArcs(Digraph& digraph, ArcFilterMap& arc_filter) |
|
| 1662 |
: Parent(), const_true_map(true) {
|
|
| 1663 |
Parent::setDigraph(digraph); |
|
| 1664 |
Parent::setNodeFilterMap(const_true_map); |
|
| 1665 |
|
|
| 1668 |
FilterArcs(DGR& digraph, ArcFilterMap& arc_filter) |
|
| 1669 |
: Parent(), const_true_map() {
|
|
| 1670 |
Parent::initialize(digraph, const_true_map, arc_filter); |
|
| 1666 | 1671 |
} |
| 1667 | 1672 |
|
| 1668 | 1673 |
/// \brief Sets the status of the given arc |
| 1669 | 1674 |
/// |
| 1670 | 1675 |
/// This function sets the status of the given arc. |
| 1671 | 1676 |
/// It is done by simply setting the assigned value of \c a |
| 1672 | 1677 |
/// to \c v in the arc filter map. |
| 1673 | 1678 |
void status(const Arc& a, bool v) const { Parent::status(a, v); }
|
| 1674 | 1679 |
|
| 1675 | 1680 |
/// \brief Returns the status of the given arc |
| 1676 | 1681 |
/// |
| 1677 | 1682 |
/// This function returns the status of the given arc. |
| 1678 | 1683 |
/// It is \c true if the given arc is enabled (i.e. not hidden). |
| 1679 | 1684 |
bool status(const Arc& a) const { return Parent::status(a); }
|
| 1680 | 1685 |
|
| 1681 | 1686 |
/// \brief Disables the given arc |
| 1682 | 1687 |
/// |
| 1683 | 1688 |
/// This function disables the given arc in the subdigraph, |
| 1684 | 1689 |
/// so the iteration jumps over it. |
| 1685 | 1690 |
/// It is the same as \ref status() "status(a, false)". |
| 1686 | 1691 |
void disable(const Arc& a) const { Parent::status(a, false); }
|
| 1687 | 1692 |
|
| 1688 | 1693 |
/// \brief Enables the given arc |
| 1689 | 1694 |
/// |
| 1690 | 1695 |
/// This function enables the given arc in the subdigraph. |
| 1691 | 1696 |
/// It is the same as \ref status() "status(a, true)". |
| 1692 | 1697 |
void enable(const Arc& a) const { Parent::status(a, true); }
|
| 1693 | 1698 |
|
| 1694 | 1699 |
}; |
| 1695 | 1700 |
|
| 1696 | 1701 |
/// \brief Returns a read-only FilterArcs adaptor |
| 1697 | 1702 |
/// |
| 1698 | 1703 |
/// This function just returns a read-only \ref FilterArcs adaptor. |
| 1699 | 1704 |
/// \ingroup graph_adaptors |
| 1700 | 1705 |
/// \relates FilterArcs |
| 1701 |
template<typename GR, typename AF> |
|
| 1702 |
FilterArcs<const GR, AF> |
|
| 1703 |
filterArcs(const GR& digraph, AF& arc_filter_map) {
|
|
| 1704 |
return FilterArcs<const GR, AF>(digraph, arc_filter_map); |
|
| 1706 |
template<typename DGR, typename AF> |
|
| 1707 |
FilterArcs<const DGR, AF> |
|
| 1708 |
filterArcs(const DGR& digraph, AF& arc_filter) {
|
|
| 1709 |
return FilterArcs<const DGR, AF>(digraph, arc_filter); |
|
| 1705 | 1710 |
} |
| 1706 | 1711 |
|
| 1707 |
template<typename GR, typename AF> |
|
| 1708 |
FilterArcs<const GR, const AF> |
|
| 1709 |
filterArcs(const GR& digraph, const AF& arc_filter_map) {
|
|
| 1710 |
return FilterArcs<const GR, const AF>(digraph, arc_filter_map); |
|
| 1712 |
template<typename DGR, typename AF> |
|
| 1713 |
FilterArcs<const DGR, const AF> |
|
| 1714 |
filterArcs(const DGR& digraph, const AF& arc_filter) {
|
|
| 1715 |
return FilterArcs<const DGR, const AF>(digraph, arc_filter); |
|
| 1711 | 1716 |
} |
| 1712 | 1717 |
|
| 1713 | 1718 |
/// \ingroup graph_adaptors |
| 1714 | 1719 |
/// |
| 1715 | 1720 |
/// \brief Adaptor class for hiding edges in a graph. |
| 1716 | 1721 |
/// |
| 1717 | 1722 |
/// FilterEdges adaptor can be used for hiding edges in a graph. |
| 1718 | 1723 |
/// A \c bool edge map must be specified, which defines the filter for |
| 1719 | 1724 |
/// the edges. Only the edges with \c true filter value are shown in the |
| 1720 | 1725 |
/// subgraph. This adaptor conforms to the \ref concepts::Graph |
| 1721 | 1726 |
/// "Graph" concept. |
| 1722 | 1727 |
/// |
| 1723 | 1728 |
/// The adapted graph can also be modified through this adaptor |
| 1724 | 1729 |
/// by adding or removing nodes or edges, unless the \c GR template |
| 1725 | 1730 |
/// parameter is set to be \c const. |
| 1726 | 1731 |
/// |
| 1727 | 1732 |
/// \tparam GR The type of the adapted graph. |
| 1728 | 1733 |
/// It must conform to the \ref concepts::Graph "Graph" concept. |
| 1729 | 1734 |
/// It can also be specified to be \c const. |
| 1730 | 1735 |
/// \tparam EF The type of the edge filter map. |
| 1731 | 1736 |
/// It must be a \c bool (or convertible) edge map of the |
| 1732 | 1737 |
/// adapted graph. The default type is |
| 1733 | 1738 |
/// \ref concepts::Graph::EdgeMap "GR::EdgeMap<bool>". |
| 1734 | 1739 |
/// |
| 1735 | 1740 |
/// \note The \c Node, \c Edge and \c Arc types of this adaptor and the |
| 1736 | 1741 |
/// adapted graph are convertible to each other. |
| 1737 | 1742 |
#ifdef DOXYGEN |
| 1738 | 1743 |
template<typename GR, |
| 1739 | 1744 |
typename EF> |
| 1740 | 1745 |
class FilterEdges {
|
| 1741 | 1746 |
#else |
| 1742 | 1747 |
template<typename GR, |
| 1743 | 1748 |
typename EF = typename GR::template EdgeMap<bool> > |
| 1744 | 1749 |
class FilterEdges : |
| 1745 | 1750 |
public GraphAdaptorExtender< |
| 1746 |
SubGraphBase<GR, ConstMap<typename GR::Node,bool |
|
| 1751 |
SubGraphBase<GR, ConstMap<typename GR::Node, Const<bool, true> >, |
|
| 1752 |
EF, false> > {
|
|
| 1747 | 1753 |
#endif |
| 1754 |
typedef GraphAdaptorExtender< |
|
| 1755 |
SubGraphBase<GR, ConstMap<typename GR::Node, Const<bool, true > >, |
|
| 1756 |
EF, false> > Parent; |
|
| 1757 |
|
|
| 1748 | 1758 |
public: |
| 1759 |
|
|
| 1749 | 1760 |
/// The type of the adapted graph. |
| 1750 | 1761 |
typedef GR Graph; |
| 1751 | 1762 |
/// The type of the edge filter map. |
| 1752 | 1763 |
typedef EF EdgeFilterMap; |
| 1753 | 1764 |
|
| 1754 |
typedef GraphAdaptorExtender< |
|
| 1755 |
SubGraphBase<GR, ConstMap<typename GR::Node,bool>, EF, false> > |
|
| 1756 |
Parent; |
|
| 1757 |
|
|
| 1758 | 1765 |
typedef typename Parent::Edge Edge; |
| 1759 | 1766 |
|
| 1760 | 1767 |
protected: |
| 1761 |
ConstMap<typename |
|
| 1768 |
ConstMap<typename GR::Node, Const<bool, true> > const_true_map; |
|
| 1762 | 1769 |
|
| 1763 | 1770 |
FilterEdges() : const_true_map(true) {
|
| 1764 | 1771 |
Parent::setNodeFilterMap(const_true_map); |
| 1765 | 1772 |
} |
| 1766 | 1773 |
|
| 1767 | 1774 |
public: |
| 1768 | 1775 |
|
| 1769 | 1776 |
/// \brief Constructor |
| 1770 | 1777 |
/// |
| 1771 | 1778 |
/// Creates a subgraph for the given graph with the given edge |
| 1772 | 1779 |
/// filter map. |
| 1773 |
FilterEdges(Graph& graph, EdgeFilterMap& edge_filter_map) : |
|
| 1774 |
Parent(), const_true_map(true) {
|
|
| 1775 |
Parent::setGraph(graph); |
|
| 1776 |
Parent::setNodeFilterMap(const_true_map); |
|
| 1777 |
|
|
| 1780 |
FilterEdges(GR& graph, EF& edge_filter) |
|
| 1781 |
: Parent(), const_true_map() {
|
|
| 1782 |
Parent::initialize(graph, const_true_map, edge_filter); |
|
| 1778 | 1783 |
} |
| 1779 | 1784 |
|
| 1780 | 1785 |
/// \brief Sets the status of the given edge |
| 1781 | 1786 |
/// |
| 1782 | 1787 |
/// This function sets the status of the given edge. |
| 1783 | 1788 |
/// It is done by simply setting the assigned value of \c e |
| 1784 | 1789 |
/// to \c v in the edge filter map. |
| 1785 | 1790 |
void status(const Edge& e, bool v) const { Parent::status(e, v); }
|
| 1786 | 1791 |
|
| 1787 | 1792 |
/// \brief Returns the status of the given edge |
| 1788 | 1793 |
/// |
| 1789 | 1794 |
/// This function returns the status of the given edge. |
| 1790 | 1795 |
/// It is \c true if the given edge is enabled (i.e. not hidden). |
| 1791 | 1796 |
bool status(const Edge& e) const { return Parent::status(e); }
|
| 1792 | 1797 |
|
| 1793 | 1798 |
/// \brief Disables the given edge |
| 1794 | 1799 |
/// |
| 1795 | 1800 |
/// This function disables the given edge in the subgraph, |
| 1796 | 1801 |
/// so the iteration jumps over it. |
| 1797 | 1802 |
/// It is the same as \ref status() "status(e, false)". |
| 1798 | 1803 |
void disable(const Edge& e) const { Parent::status(e, false); }
|
| 1799 | 1804 |
|
| 1800 | 1805 |
/// \brief Enables the given edge |
| 1801 | 1806 |
/// |
| 1802 | 1807 |
/// This function enables the given edge in the subgraph. |
| 1803 | 1808 |
/// It is the same as \ref status() "status(e, true)". |
| 1804 | 1809 |
void enable(const Edge& e) const { Parent::status(e, true); }
|
| 1805 | 1810 |
|
| 1806 | 1811 |
}; |
| 1807 | 1812 |
|
| 1808 | 1813 |
/// \brief Returns a read-only FilterEdges adaptor |
| 1809 | 1814 |
/// |
| 1810 | 1815 |
/// This function just returns a read-only \ref FilterEdges adaptor. |
| 1811 | 1816 |
/// \ingroup graph_adaptors |
| 1812 | 1817 |
/// \relates FilterEdges |
| 1813 | 1818 |
template<typename GR, typename EF> |
| 1814 | 1819 |
FilterEdges<const GR, EF> |
| 1815 |
filterEdges(const GR& graph, EF& edge_filter_map) {
|
|
| 1816 |
return FilterEdges<const GR, EF>(graph, edge_filter_map); |
|
| 1820 |
filterEdges(const GR& graph, EF& edge_filter) {
|
|
| 1821 |
return FilterEdges<const GR, EF>(graph, edge_filter); |
|
| 1817 | 1822 |
} |
| 1818 | 1823 |
|
| 1819 | 1824 |
template<typename GR, typename EF> |
| 1820 | 1825 |
FilterEdges<const GR, const EF> |
| 1821 |
filterEdges(const GR& graph, const EF& edge_filter_map) {
|
|
| 1822 |
return FilterEdges<const GR, const EF>(graph, edge_filter_map); |
|
| 1826 |
filterEdges(const GR& graph, const EF& edge_filter) {
|
|
| 1827 |
return FilterEdges<const GR, const EF>(graph, edge_filter); |
|
| 1823 | 1828 |
} |
| 1824 | 1829 |
|
| 1825 | 1830 |
|
| 1826 |
template <typename |
|
| 1831 |
template <typename DGR> |
|
| 1827 | 1832 |
class UndirectorBase {
|
| 1828 | 1833 |
public: |
| 1829 |
typedef |
|
| 1834 |
typedef DGR Digraph; |
|
| 1830 | 1835 |
typedef UndirectorBase Adaptor; |
| 1831 | 1836 |
|
| 1832 | 1837 |
typedef True UndirectedTag; |
| 1833 | 1838 |
|
| 1834 | 1839 |
typedef typename Digraph::Arc Edge; |
| 1835 | 1840 |
typedef typename Digraph::Node Node; |
| 1836 | 1841 |
|
| 1837 |
class Arc |
|
| 1842 |
class Arc {
|
|
| 1838 | 1843 |
friend class UndirectorBase; |
| 1839 | 1844 |
protected: |
| 1845 |
Edge _edge; |
|
| 1840 | 1846 |
bool _forward; |
| 1841 | 1847 |
|
| 1842 |
Arc(const Edge& edge, bool forward) : |
|
| 1843 |
Edge(edge), _forward(forward) {}
|
|
| 1848 |
Arc(const Edge& edge, bool forward) |
|
| 1849 |
: _edge(edge), _forward(forward) {}
|
|
| 1844 | 1850 |
|
| 1845 | 1851 |
public: |
| 1846 | 1852 |
Arc() {}
|
| 1847 | 1853 |
|
| 1848 |
Arc(Invalid) : |
|
| 1854 |
Arc(Invalid) : _edge(INVALID), _forward(true) {}
|
|
| 1855 |
|
|
| 1856 |
operator const Edge&() const { return _edge; }
|
|
| 1849 | 1857 |
|
| 1850 | 1858 |
bool operator==(const Arc &other) const {
|
| 1851 |
return _forward == other._forward && |
|
| 1852 |
static_cast<const Edge&>(*this) == static_cast<const Edge&>(other); |
|
| 1859 |
return _forward == other._forward && _edge == other._edge; |
|
| 1853 | 1860 |
} |
| 1854 | 1861 |
bool operator!=(const Arc &other) const {
|
| 1855 |
return _forward != other._forward || |
|
| 1856 |
static_cast<const Edge&>(*this) != static_cast<const Edge&>(other); |
|
| 1862 |
return _forward != other._forward || _edge != other._edge; |
|
| 1857 | 1863 |
} |
| 1858 | 1864 |
bool operator<(const Arc &other) const {
|
| 1859 | 1865 |
return _forward < other._forward || |
| 1860 |
(_forward == other._forward && |
|
| 1861 |
static_cast<const Edge&>(*this) < static_cast<const Edge&>(other)); |
|
| 1866 |
(_forward == other._forward && _edge < other._edge); |
|
| 1862 | 1867 |
} |
| 1863 | 1868 |
}; |
| 1864 | 1869 |
|
| 1865 | 1870 |
void first(Node& n) const {
|
| 1866 | 1871 |
_digraph->first(n); |
| 1867 | 1872 |
} |
| 1868 | 1873 |
|
| 1869 | 1874 |
void next(Node& n) const {
|
| 1870 | 1875 |
_digraph->next(n); |
| 1871 | 1876 |
} |
| 1872 | 1877 |
|
| 1873 | 1878 |
void first(Arc& a) const {
|
| 1874 |
_digraph->first(a); |
|
| 1879 |
_digraph->first(a._edge); |
|
| 1875 | 1880 |
a._forward = true; |
| 1876 | 1881 |
} |
| 1877 | 1882 |
|
| 1878 | 1883 |
void next(Arc& a) const {
|
| 1879 | 1884 |
if (a._forward) {
|
| 1880 | 1885 |
a._forward = false; |
| 1881 | 1886 |
} else {
|
| 1882 |
_digraph->next(a); |
|
| 1887 |
_digraph->next(a._edge); |
|
| 1883 | 1888 |
a._forward = true; |
| 1884 | 1889 |
} |
| 1885 | 1890 |
} |
| 1886 | 1891 |
|
| 1887 | 1892 |
void first(Edge& e) const {
|
| 1888 | 1893 |
_digraph->first(e); |
| 1889 | 1894 |
} |
| 1890 | 1895 |
|
| 1891 | 1896 |
void next(Edge& e) const {
|
| 1892 | 1897 |
_digraph->next(e); |
| 1893 | 1898 |
} |
| 1894 | 1899 |
|
| 1895 | 1900 |
void firstOut(Arc& a, const Node& n) const {
|
| 1896 |
_digraph->firstIn(a, n); |
|
| 1897 |
if( static_cast<const Edge&>(a) != INVALID ) {
|
|
| 1901 |
_digraph->firstIn(a._edge, n); |
|
| 1902 |
if (a._edge != INVALID ) {
|
|
| 1898 | 1903 |
a._forward = false; |
| 1899 | 1904 |
} else {
|
| 1900 |
_digraph->firstOut(a, n); |
|
| 1905 |
_digraph->firstOut(a._edge, n); |
|
| 1901 | 1906 |
a._forward = true; |
| 1902 | 1907 |
} |
| 1903 | 1908 |
} |
| 1904 | 1909 |
void nextOut(Arc &a) const {
|
| 1905 | 1910 |
if (!a._forward) {
|
| 1906 |
Node n = _digraph->target(a); |
|
| 1907 |
_digraph->nextIn(a); |
|
| 1908 |
if (static_cast<const Edge&>(a) == INVALID ) {
|
|
| 1909 |
_digraph->firstOut(a, n); |
|
| 1911 |
Node n = _digraph->target(a._edge); |
|
| 1912 |
_digraph->nextIn(a._edge); |
|
| 1913 |
if (a._edge == INVALID) {
|
|
| 1914 |
_digraph->firstOut(a._edge, n); |
|
| 1910 | 1915 |
a._forward = true; |
| 1911 | 1916 |
} |
| 1912 | 1917 |
} |
| 1913 | 1918 |
else {
|
| 1914 |
_digraph->nextOut(a); |
|
| 1919 |
_digraph->nextOut(a._edge); |
|
| 1915 | 1920 |
} |
| 1916 | 1921 |
} |
| 1917 | 1922 |
|
| 1918 | 1923 |
void firstIn(Arc &a, const Node &n) const {
|
| 1919 |
_digraph->firstOut(a, n); |
|
| 1920 |
if (static_cast<const Edge&>(a) != INVALID ) {
|
|
| 1924 |
_digraph->firstOut(a._edge, n); |
|
| 1925 |
if (a._edge != INVALID ) {
|
|
| 1921 | 1926 |
a._forward = false; |
| 1922 | 1927 |
} else {
|
| 1923 |
_digraph->firstIn(a, n); |
|
| 1928 |
_digraph->firstIn(a._edge, n); |
|
| 1924 | 1929 |
a._forward = true; |
| 1925 | 1930 |
} |
| 1926 | 1931 |
} |
| 1927 | 1932 |
void nextIn(Arc &a) const {
|
| 1928 | 1933 |
if (!a._forward) {
|
| 1929 |
Node n = _digraph->source(a); |
|
| 1930 |
_digraph->nextOut(a); |
|
| 1931 |
if( static_cast<const Edge&>(a) == INVALID ) {
|
|
| 1932 |
_digraph->firstIn(a, n); |
|
| 1934 |
Node n = _digraph->source(a._edge); |
|
| 1935 |
_digraph->nextOut(a._edge); |
|
| 1936 |
if (a._edge == INVALID ) {
|
|
| 1937 |
_digraph->firstIn(a._edge, n); |
|
| 1933 | 1938 |
a._forward = true; |
| 1934 | 1939 |
} |
| 1935 | 1940 |
} |
| 1936 | 1941 |
else {
|
| 1937 |
_digraph->nextIn(a); |
|
| 1942 |
_digraph->nextIn(a._edge); |
|
| 1938 | 1943 |
} |
| 1939 | 1944 |
} |
| 1940 | 1945 |
|
| 1941 | 1946 |
void firstInc(Edge &e, bool &d, const Node &n) const {
|
| 1942 | 1947 |
d = true; |
| 1943 | 1948 |
_digraph->firstOut(e, n); |
| 1944 | 1949 |
if (e != INVALID) return; |
| 1945 | 1950 |
d = false; |
| 1946 | 1951 |
_digraph->firstIn(e, n); |
| 1947 | 1952 |
} |
| 1948 | 1953 |
|
| 1949 | 1954 |
void nextInc(Edge &e, bool &d) const {
|
| 1950 | 1955 |
if (d) {
|
| 1951 | 1956 |
Node s = _digraph->source(e); |
| 1952 | 1957 |
_digraph->nextOut(e); |
| 1953 | 1958 |
if (e != INVALID) return; |
| 1954 | 1959 |
d = false; |
| 1955 | 1960 |
_digraph->firstIn(e, s); |
| 1956 | 1961 |
} else {
|
| 1957 | 1962 |
_digraph->nextIn(e); |
| 1958 | 1963 |
} |
| 1959 | 1964 |
} |
| 1960 | 1965 |
|
| 1961 | 1966 |
Node u(const Edge& e) const {
|
| 1962 | 1967 |
return _digraph->source(e); |
| 1963 | 1968 |
} |
| 1964 | 1969 |
|
| 1965 | 1970 |
Node v(const Edge& e) const {
|
| 1966 | 1971 |
return _digraph->target(e); |
| 1967 | 1972 |
} |
| 1968 | 1973 |
|
| 1969 | 1974 |
Node source(const Arc &a) const {
|
| 1970 |
return a._forward ? _digraph->source(a) : _digraph->target(a); |
|
| 1975 |
return a._forward ? _digraph->source(a._edge) : _digraph->target(a._edge); |
|
| 1971 | 1976 |
} |
| 1972 | 1977 |
|
| 1973 | 1978 |
Node target(const Arc &a) const {
|
| 1974 |
return a._forward ? _digraph->target(a) : _digraph->source(a); |
|
| 1979 |
return a._forward ? _digraph->target(a._edge) : _digraph->source(a._edge); |
|
| 1975 | 1980 |
} |
| 1976 | 1981 |
|
| 1977 | 1982 |
static Arc direct(const Edge &e, bool d) {
|
| 1978 | 1983 |
return Arc(e, d); |
| 1979 | 1984 |
} |
| 1980 |
Arc direct(const Edge &e, const Node& n) const {
|
|
| 1981 |
return Arc(e, _digraph->source(e) == n); |
|
| 1982 |
} |
|
| 1983 | 1985 |
|
| 1984 | 1986 |
static bool direction(const Arc &a) { return a._forward; }
|
| 1985 | 1987 |
|
| 1986 | 1988 |
Node nodeFromId(int ix) const { return _digraph->nodeFromId(ix); }
|
| 1987 | 1989 |
Arc arcFromId(int ix) const {
|
| 1988 | 1990 |
return direct(_digraph->arcFromId(ix >> 1), bool(ix & 1)); |
| 1989 | 1991 |
} |
| 1990 | 1992 |
Edge edgeFromId(int ix) const { return _digraph->arcFromId(ix); }
|
| 1991 | 1993 |
|
| 1992 | 1994 |
int id(const Node &n) const { return _digraph->id(n); }
|
| 1993 | 1995 |
int id(const Arc &a) const {
|
| 1994 | 1996 |
return (_digraph->id(a) << 1) | (a._forward ? 1 : 0); |
| 1995 | 1997 |
} |
| 1996 | 1998 |
int id(const Edge &e) const { return _digraph->id(e); }
|
| 1997 | 1999 |
|
| 1998 | 2000 |
int maxNodeId() const { return _digraph->maxNodeId(); }
|
| 1999 | 2001 |
int maxArcId() const { return (_digraph->maxArcId() << 1) | 1; }
|
| 2000 | 2002 |
int maxEdgeId() const { return _digraph->maxArcId(); }
|
| 2001 | 2003 |
|
| 2002 | 2004 |
Node addNode() { return _digraph->addNode(); }
|
| 2003 | 2005 |
Edge addEdge(const Node& u, const Node& v) {
|
| 2004 | 2006 |
return _digraph->addArc(u, v); |
| 2005 | 2007 |
} |
| 2006 | 2008 |
|
| 2007 | 2009 |
void erase(const Node& i) { _digraph->erase(i); }
|
| 2008 | 2010 |
void erase(const Edge& i) { _digraph->erase(i); }
|
| 2009 | 2011 |
|
| 2010 | 2012 |
void clear() { _digraph->clear(); }
|
| 2011 | 2013 |
|
| 2012 | 2014 |
typedef NodeNumTagIndicator<Digraph> NodeNumTag; |
| 2013 | 2015 |
int nodeNum() const { return _digraph->nodeNum(); }
|
| 2014 | 2016 |
|
| 2015 | 2017 |
typedef ArcNumTagIndicator<Digraph> ArcNumTag; |
| 2016 | 2018 |
int arcNum() const { return 2 * _digraph->arcNum(); }
|
| 2017 | 2019 |
|
| 2018 | 2020 |
typedef ArcNumTag EdgeNumTag; |
| 2019 | 2021 |
int edgeNum() const { return _digraph->arcNum(); }
|
| 2020 | 2022 |
|
| 2021 | 2023 |
typedef FindArcTagIndicator<Digraph> FindArcTag; |
| 2022 | 2024 |
Arc findArc(Node s, Node t, Arc p = INVALID) const {
|
| 2023 | 2025 |
if (p == INVALID) {
|
| 2024 | 2026 |
Edge arc = _digraph->findArc(s, t); |
| 2025 | 2027 |
if (arc != INVALID) return direct(arc, true); |
| 2026 | 2028 |
arc = _digraph->findArc(t, s); |
| 2027 | 2029 |
if (arc != INVALID) return direct(arc, false); |
| 2028 | 2030 |
} else if (direction(p)) {
|
| 2029 | 2031 |
Edge arc = _digraph->findArc(s, t, p); |
| 2030 | 2032 |
if (arc != INVALID) return direct(arc, true); |
| 2031 | 2033 |
arc = _digraph->findArc(t, s); |
| 2032 | 2034 |
if (arc != INVALID) return direct(arc, false); |
| 2033 | 2035 |
} else {
|
| 2034 | 2036 |
Edge arc = _digraph->findArc(t, s, p); |
| 2035 | 2037 |
if (arc != INVALID) return direct(arc, false); |
| 2036 | 2038 |
} |
| 2037 | 2039 |
return INVALID; |
| 2038 | 2040 |
} |
| 2039 | 2041 |
|
| 2040 | 2042 |
typedef FindArcTag FindEdgeTag; |
| 2041 | 2043 |
Edge findEdge(Node s, Node t, Edge p = INVALID) const {
|
| 2042 | 2044 |
if (s != t) {
|
| 2043 | 2045 |
if (p == INVALID) {
|
| 2044 | 2046 |
Edge arc = _digraph->findArc(s, t); |
| 2045 | 2047 |
if (arc != INVALID) return arc; |
| 2046 | 2048 |
arc = _digraph->findArc(t, s); |
| 2047 | 2049 |
if (arc != INVALID) return arc; |
| 2048 | 2050 |
} else if (_digraph->source(p) == s) {
|
| 2049 | 2051 |
Edge arc = _digraph->findArc(s, t, p); |
| 2050 | 2052 |
if (arc != INVALID) return arc; |
| 2051 | 2053 |
arc = _digraph->findArc(t, s); |
| 2052 | 2054 |
if (arc != INVALID) return arc; |
| 2053 | 2055 |
} else {
|
| 2054 | 2056 |
Edge arc = _digraph->findArc(t, s, p); |
| 2055 | 2057 |
if (arc != INVALID) return arc; |
| 2056 | 2058 |
} |
| 2057 | 2059 |
} else {
|
| 2058 | 2060 |
return _digraph->findArc(s, t, p); |
| 2059 | 2061 |
} |
| 2060 | 2062 |
return INVALID; |
| 2061 | 2063 |
} |
| 2062 | 2064 |
|
| 2063 | 2065 |
private: |
| 2064 | 2066 |
|
| 2065 |
template <typename |
|
| 2067 |
template <typename V> |
|
| 2066 | 2068 |
class ArcMapBase {
|
| 2067 | 2069 |
private: |
| 2068 | 2070 |
|
| 2069 |
typedef typename |
|
| 2071 |
typedef typename DGR::template ArcMap<V> MapImpl; |
|
| 2070 | 2072 |
|
| 2071 | 2073 |
public: |
| 2072 | 2074 |
|
| 2073 | 2075 |
typedef typename MapTraits<MapImpl>::ReferenceMapTag ReferenceMapTag; |
| 2074 | 2076 |
|
| 2075 |
typedef |
|
| 2077 |
typedef V Value; |
|
| 2076 | 2078 |
typedef Arc Key; |
| 2077 | 2079 |
typedef typename MapTraits<MapImpl>::ConstReturnValue ConstReturnValue; |
| 2078 | 2080 |
typedef typename MapTraits<MapImpl>::ReturnValue ReturnValue; |
| 2079 | 2081 |
typedef typename MapTraits<MapImpl>::ConstReturnValue ConstReference; |
| 2080 | 2082 |
typedef typename MapTraits<MapImpl>::ReturnValue Reference; |
| 2081 | 2083 |
|
| 2082 |
ArcMapBase(const |
|
| 2084 |
ArcMapBase(const UndirectorBase<DGR>& adaptor) : |
|
| 2083 | 2085 |
_forward(*adaptor._digraph), _backward(*adaptor._digraph) {}
|
| 2084 | 2086 |
|
| 2085 |
ArcMapBase(const Adaptor& adaptor, const Value& v) |
|
| 2086 |
: _forward(*adaptor._digraph, v), _backward(*adaptor._digraph, v) {}
|
|
| 2087 |
|
|
| 2088 |
void set(const Arc& a, const Value& v) {
|
|
| 2087 |
ArcMapBase(const UndirectorBase<DGR>& adaptor, const V& value) |
|
| 2088 |
: _forward(*adaptor._digraph, value), |
|
| 2089 |
_backward(*adaptor._digraph, value) {}
|
|
| 2090 |
|
|
| 2091 |
void set(const Arc& a, const V& value) {
|
|
| 2089 | 2092 |
if (direction(a)) {
|
| 2090 |
_forward.set(a, |
|
| 2093 |
_forward.set(a, value); |
|
| 2091 | 2094 |
} else {
|
| 2092 |
_backward.set(a, |
|
| 2095 |
_backward.set(a, value); |
|
| 2093 | 2096 |
} |
| 2094 | 2097 |
} |
| 2095 | 2098 |
|
| 2096 | 2099 |
ConstReturnValue operator[](const Arc& a) const {
|
| 2097 | 2100 |
if (direction(a)) {
|
| 2098 | 2101 |
return _forward[a]; |
| 2099 | 2102 |
} else {
|
| 2100 | 2103 |
return _backward[a]; |
| 2101 | 2104 |
} |
| 2102 | 2105 |
} |
| 2103 | 2106 |
|
| 2104 | 2107 |
ReturnValue operator[](const Arc& a) {
|
| 2105 | 2108 |
if (direction(a)) {
|
| 2106 | 2109 |
return _forward[a]; |
| 2107 | 2110 |
} else {
|
| 2108 | 2111 |
return _backward[a]; |
| 2109 | 2112 |
} |
| 2110 | 2113 |
} |
| 2111 | 2114 |
|
| 2112 | 2115 |
protected: |
| 2113 | 2116 |
|
| 2114 | 2117 |
MapImpl _forward, _backward; |
| 2115 | 2118 |
|
| 2116 | 2119 |
}; |
| 2117 | 2120 |
|
| 2118 | 2121 |
public: |
| 2119 | 2122 |
|
| 2120 |
template <typename _Value> |
|
| 2121 |
class NodeMap : public Digraph::template NodeMap<_Value> {
|
|
| 2123 |
template <typename V> |
|
| 2124 |
class NodeMap : public DGR::template NodeMap<V> {
|
|
| 2125 |
typedef typename DGR::template NodeMap<V> Parent; |
|
| 2126 |
|
|
| 2122 | 2127 |
public: |
| 2123 |
|
|
| 2124 |
typedef _Value Value; |
|
| 2125 |
typedef typename Digraph::template NodeMap<Value> Parent; |
|
| 2126 |
|
|
| 2127 |
|
|
| 2128 |
typedef V Value; |
|
| 2129 |
|
|
| 2130 |
explicit NodeMap(const UndirectorBase<DGR>& adaptor) |
|
| 2128 | 2131 |
: Parent(*adaptor._digraph) {}
|
| 2129 | 2132 |
|
| 2130 |
NodeMap(const |
|
| 2133 |
NodeMap(const UndirectorBase<DGR>& adaptor, const V& value) |
|
| 2131 | 2134 |
: Parent(*adaptor._digraph, value) { }
|
| 2132 | 2135 |
|
| 2133 | 2136 |
private: |
| 2134 | 2137 |
NodeMap& operator=(const NodeMap& cmap) {
|
| 2135 | 2138 |
return operator=<NodeMap>(cmap); |
| 2136 | 2139 |
} |
| 2137 | 2140 |
|
| 2138 | 2141 |
template <typename CMap> |
| 2139 | 2142 |
NodeMap& operator=(const CMap& cmap) {
|
| 2140 | 2143 |
Parent::operator=(cmap); |
| 2141 | 2144 |
return *this; |
| 2142 | 2145 |
} |
| 2143 | 2146 |
|
| 2144 | 2147 |
}; |
| 2145 | 2148 |
|
| 2146 |
template <typename |
|
| 2149 |
template <typename V> |
|
| 2147 | 2150 |
class ArcMap |
| 2148 |
: public SubMapExtender<Adaptor, ArcMapBase<_Value> > |
|
| 2149 |
{
|
|
| 2151 |
: public SubMapExtender<UndirectorBase<DGR>, ArcMapBase<V> > {
|
|
| 2152 |
typedef SubMapExtender<UndirectorBase<DGR>, ArcMapBase<V> > Parent; |
|
| 2153 |
|
|
| 2150 | 2154 |
public: |
| 2151 |
typedef _Value Value; |
|
| 2152 |
typedef SubMapExtender<Adaptor, ArcMapBase<Value> > Parent; |
|
| 2153 |
|
|
| 2154 |
explicit ArcMap(const Adaptor& adaptor) |
|
| 2155 |
typedef V Value; |
|
| 2156 |
|
|
| 2157 |
explicit ArcMap(const UndirectorBase<DGR>& adaptor) |
|
| 2155 | 2158 |
: Parent(adaptor) {}
|
| 2156 | 2159 |
|
| 2157 |
ArcMap(const |
|
| 2160 |
ArcMap(const UndirectorBase<DGR>& adaptor, const V& value) |
|
| 2158 | 2161 |
: Parent(adaptor, value) {}
|
| 2159 | 2162 |
|
| 2160 | 2163 |
private: |
| 2161 | 2164 |
ArcMap& operator=(const ArcMap& cmap) {
|
| 2162 | 2165 |
return operator=<ArcMap>(cmap); |
| 2163 | 2166 |
} |
| 2164 | 2167 |
|
| 2165 | 2168 |
template <typename CMap> |
| 2166 | 2169 |
ArcMap& operator=(const CMap& cmap) {
|
| 2167 | 2170 |
Parent::operator=(cmap); |
| 2168 | 2171 |
return *this; |
| 2169 | 2172 |
} |
| 2170 | 2173 |
}; |
| 2171 | 2174 |
|
| 2172 |
template <typename _Value> |
|
| 2173 |
class EdgeMap : public Digraph::template ArcMap<_Value> {
|
|
| 2175 |
template <typename V> |
|
| 2176 |
class EdgeMap : public Digraph::template ArcMap<V> {
|
|
| 2177 |
typedef typename Digraph::template ArcMap<V> Parent; |
|
| 2178 |
|
|
| 2174 | 2179 |
public: |
| 2175 |
|
|
| 2176 |
typedef _Value Value; |
|
| 2177 |
typedef typename Digraph::template ArcMap<Value> Parent; |
|
| 2178 |
|
|
| 2179 |
|
|
| 2180 |
typedef V Value; |
|
| 2181 |
|
|
| 2182 |
explicit EdgeMap(const UndirectorBase<DGR>& adaptor) |
|
| 2180 | 2183 |
: Parent(*adaptor._digraph) {}
|
| 2181 | 2184 |
|
| 2182 |
EdgeMap(const |
|
| 2185 |
EdgeMap(const UndirectorBase<DGR>& adaptor, const V& value) |
|
| 2183 | 2186 |
: Parent(*adaptor._digraph, value) {}
|
| 2184 | 2187 |
|
| 2185 | 2188 |
private: |
| 2186 | 2189 |
EdgeMap& operator=(const EdgeMap& cmap) {
|
| 2187 | 2190 |
return operator=<EdgeMap>(cmap); |
| 2188 | 2191 |
} |
| 2189 | 2192 |
|
| 2190 | 2193 |
template <typename CMap> |
| 2191 | 2194 |
EdgeMap& operator=(const CMap& cmap) {
|
| 2192 | 2195 |
Parent::operator=(cmap); |
| 2193 | 2196 |
return *this; |
| 2194 | 2197 |
} |
| 2195 | 2198 |
|
| 2196 | 2199 |
}; |
| 2197 | 2200 |
|
| 2198 |
typedef typename ItemSetTraits< |
|
| 2201 |
typedef typename ItemSetTraits<DGR, Node>::ItemNotifier NodeNotifier; |
|
| 2199 | 2202 |
NodeNotifier& notifier(Node) const { return _digraph->notifier(Node()); }
|
| 2200 | 2203 |
|
| 2201 |
typedef typename ItemSetTraits< |
|
| 2204 |
typedef typename ItemSetTraits<DGR, Edge>::ItemNotifier EdgeNotifier; |
|
| 2202 | 2205 |
EdgeNotifier& notifier(Edge) const { return _digraph->notifier(Edge()); }
|
| 2206 |
|
|
| 2207 |
typedef EdgeNotifier ArcNotifier; |
|
| 2208 |
ArcNotifier& notifier(Arc) const { return _digraph->notifier(Edge()); }
|
|
| 2203 | 2209 |
|
| 2204 | 2210 |
protected: |
| 2205 | 2211 |
|
| 2206 | 2212 |
UndirectorBase() : _digraph(0) {}
|
| 2207 | 2213 |
|
| 2208 |
Digraph* _digraph; |
|
| 2209 |
|
|
| 2210 |
|
|
| 2214 |
DGR* _digraph; |
|
| 2215 |
|
|
| 2216 |
void initialize(DGR& digraph) {
|
|
| 2211 | 2217 |
_digraph = &digraph; |
| 2212 | 2218 |
} |
| 2213 | 2219 |
|
| 2214 | 2220 |
}; |
| 2215 | 2221 |
|
| 2216 | 2222 |
/// \ingroup graph_adaptors |
| 2217 | 2223 |
/// |
| 2218 | 2224 |
/// \brief Adaptor class for viewing a digraph as an undirected graph. |
| 2219 | 2225 |
/// |
| 2220 | 2226 |
/// Undirector adaptor can be used for viewing a digraph as an undirected |
| 2221 | 2227 |
/// graph. All arcs of the underlying digraph are showed in the |
| 2222 | 2228 |
/// adaptor as an edge (and also as a pair of arcs, of course). |
| 2223 | 2229 |
/// This adaptor conforms to the \ref concepts::Graph "Graph" concept. |
| 2224 | 2230 |
/// |
| 2225 | 2231 |
/// The adapted digraph can also be modified through this adaptor |
| 2226 | 2232 |
/// by adding or removing nodes or edges, unless the \c GR template |
| 2227 | 2233 |
/// parameter is set to be \c const. |
| 2228 | 2234 |
/// |
| 2229 |
/// \tparam |
|
| 2235 |
/// \tparam DGR The type of the adapted digraph. |
|
| 2230 | 2236 |
/// It must conform to the \ref concepts::Digraph "Digraph" concept. |
| 2231 | 2237 |
/// It can also be specified to be \c const. |
| 2232 | 2238 |
/// |
| 2233 | 2239 |
/// \note The \c Node type of this adaptor and the adapted digraph are |
| 2234 | 2240 |
/// convertible to each other, moreover the \c Edge type of the adaptor |
| 2235 | 2241 |
/// and the \c Arc type of the adapted digraph are also convertible to |
| 2236 | 2242 |
/// each other. |
| 2237 | 2243 |
/// (Thus the \c Arc type of the adaptor is convertible to the \c Arc type |
| 2238 | 2244 |
/// of the adapted digraph.) |
| 2239 |
template<typename |
|
| 2245 |
template<typename DGR> |
|
| 2240 | 2246 |
#ifdef DOXYGEN |
| 2241 | 2247 |
class Undirector {
|
| 2242 | 2248 |
#else |
| 2243 | 2249 |
class Undirector : |
| 2244 |
public GraphAdaptorExtender<UndirectorBase< |
|
| 2250 |
public GraphAdaptorExtender<UndirectorBase<DGR> > {
|
|
| 2245 | 2251 |
#endif |
| 2252 |
typedef GraphAdaptorExtender<UndirectorBase<DGR> > Parent; |
|
| 2246 | 2253 |
public: |
| 2247 | 2254 |
/// The type of the adapted digraph. |
| 2248 |
typedef GR Digraph; |
|
| 2249 |
typedef GraphAdaptorExtender<UndirectorBase<GR> > Parent; |
|
| 2255 |
typedef DGR Digraph; |
|
| 2250 | 2256 |
protected: |
| 2251 | 2257 |
Undirector() { }
|
| 2252 | 2258 |
public: |
| 2253 | 2259 |
|
| 2254 | 2260 |
/// \brief Constructor |
| 2255 | 2261 |
/// |
| 2256 | 2262 |
/// Creates an undirected graph from the given digraph. |
| 2257 |
Undirector(Digraph& digraph) {
|
|
| 2258 |
setDigraph(digraph); |
|
| 2263 |
Undirector(DGR& digraph) {
|
|
| 2264 |
initialize(digraph); |
|
| 2259 | 2265 |
} |
| 2260 | 2266 |
|
| 2261 | 2267 |
/// \brief Arc map combined from two original arc maps |
| 2262 | 2268 |
/// |
| 2263 | 2269 |
/// This map adaptor class adapts two arc maps of the underlying |
| 2264 | 2270 |
/// digraph to get an arc map of the undirected graph. |
| 2265 |
/// Its value type is inherited from the first arc map type |
|
| 2266 |
/// (\c %ForwardMap). |
|
| 2267 |
|
|
| 2271 |
/// Its value type is inherited from the first arc map type (\c FW). |
|
| 2272 |
/// \tparam FW The type of the "foward" arc map. |
|
| 2273 |
/// \tparam BK The type of the "backward" arc map. |
|
| 2274 |
template <typename FW, typename BK> |
|
| 2268 | 2275 |
class CombinedArcMap {
|
| 2269 | 2276 |
public: |
| 2270 | 2277 |
|
| 2271 | 2278 |
/// The key type of the map |
| 2272 | 2279 |
typedef typename Parent::Arc Key; |
| 2273 | 2280 |
/// The value type of the map |
| 2274 |
typedef typename ForwardMap::Value Value; |
|
| 2275 |
|
|
| 2276 |
typedef typename MapTraits<ForwardMap>::ReferenceMapTag ReferenceMapTag; |
|
| 2277 |
|
|
| 2278 |
typedef typename MapTraits<ForwardMap>::ReturnValue ReturnValue; |
|
| 2279 |
typedef typename MapTraits<ForwardMap>::ConstReturnValue ConstReturnValue; |
|
| 2280 |
typedef typename MapTraits<ForwardMap>::ReturnValue Reference; |
|
| 2281 |
typedef typename MapTraits<ForwardMap>::ConstReturnValue ConstReference; |
|
| 2281 |
typedef typename FW::Value Value; |
|
| 2282 |
|
|
| 2283 |
typedef typename MapTraits<FW>::ReferenceMapTag ReferenceMapTag; |
|
| 2284 |
|
|
| 2285 |
typedef typename MapTraits<FW>::ReturnValue ReturnValue; |
|
| 2286 |
typedef typename MapTraits<FW>::ConstReturnValue ConstReturnValue; |
|
| 2287 |
typedef typename MapTraits<FW>::ReturnValue Reference; |
|
| 2288 |
typedef typename MapTraits<FW>::ConstReturnValue ConstReference; |
|
| 2282 | 2289 |
|
| 2283 | 2290 |
/// Constructor |
| 2284 |
CombinedArcMap( |
|
| 2291 |
CombinedArcMap(FW& forward, BK& backward) |
|
| 2285 | 2292 |
: _forward(&forward), _backward(&backward) {}
|
| 2286 | 2293 |
|
| 2287 | 2294 |
/// Sets the value associated with the given key. |
| 2288 | 2295 |
void set(const Key& e, const Value& a) {
|
| 2289 | 2296 |
if (Parent::direction(e)) {
|
| 2290 | 2297 |
_forward->set(e, a); |
| 2291 | 2298 |
} else {
|
| 2292 | 2299 |
_backward->set(e, a); |
| 2293 | 2300 |
} |
| 2294 | 2301 |
} |
| 2295 | 2302 |
|
| 2296 | 2303 |
/// Returns the value associated with the given key. |
| 2297 | 2304 |
ConstReturnValue operator[](const Key& e) const {
|
| 2298 | 2305 |
if (Parent::direction(e)) {
|
| 2299 | 2306 |
return (*_forward)[e]; |
| 2300 | 2307 |
} else {
|
| 2301 | 2308 |
return (*_backward)[e]; |
| 2302 | 2309 |
} |
| 2303 | 2310 |
} |
| 2304 | 2311 |
|
| 2305 | 2312 |
/// Returns a reference to the value associated with the given key. |
| 2306 | 2313 |
ReturnValue operator[](const Key& e) {
|
| 2307 | 2314 |
if (Parent::direction(e)) {
|
| 2308 | 2315 |
return (*_forward)[e]; |
| 2309 | 2316 |
} else {
|
| 2310 | 2317 |
return (*_backward)[e]; |
| 2311 | 2318 |
} |
| 2312 | 2319 |
} |
| 2313 | 2320 |
|
| 2314 | 2321 |
protected: |
| 2315 | 2322 |
|
| 2316 |
ForwardMap* _forward; |
|
| 2317 |
BackwardMap* _backward; |
|
| 2323 |
FW* _forward; |
|
| 2324 |
BK* _backward; |
|
| 2318 | 2325 |
|
| 2319 | 2326 |
}; |
| 2320 | 2327 |
|
| 2321 | 2328 |
/// \brief Returns a combined arc map |
| 2322 | 2329 |
/// |
| 2323 | 2330 |
/// This function just returns a combined arc map. |
| 2324 |
template <typename ForwardMap, typename BackwardMap> |
|
| 2325 |
static CombinedArcMap<ForwardMap, BackwardMap> |
|
| 2326 |
combinedArcMap(ForwardMap& forward, BackwardMap& backward) {
|
|
| 2327 |
return CombinedArcMap<ForwardMap, BackwardMap>(forward, backward); |
|
| 2331 |
template <typename FW, typename BK> |
|
| 2332 |
static CombinedArcMap<FW, BK> |
|
| 2333 |
combinedArcMap(FW& forward, BK& backward) {
|
|
| 2334 |
return CombinedArcMap<FW, BK>(forward, backward); |
|
| 2328 | 2335 |
} |
| 2329 | 2336 |
|
| 2330 |
template <typename ForwardMap, typename BackwardMap> |
|
| 2331 |
static CombinedArcMap<const ForwardMap, BackwardMap> |
|
| 2332 |
combinedArcMap(const ForwardMap& forward, BackwardMap& backward) {
|
|
| 2333 |
return CombinedArcMap<const ForwardMap, |
|
| 2334 |
|
|
| 2337 |
template <typename FW, typename BK> |
|
| 2338 |
static CombinedArcMap<const FW, BK> |
|
| 2339 |
combinedArcMap(const FW& forward, BK& backward) {
|
|
| 2340 |
return CombinedArcMap<const FW, BK>(forward, backward); |
|
| 2335 | 2341 |
} |
| 2336 | 2342 |
|
| 2337 |
template <typename ForwardMap, typename BackwardMap> |
|
| 2338 |
static CombinedArcMap<ForwardMap, const BackwardMap> |
|
| 2339 |
combinedArcMap(ForwardMap& forward, const BackwardMap& backward) {
|
|
| 2340 |
return CombinedArcMap<ForwardMap, |
|
| 2341 |
|
|
| 2343 |
template <typename FW, typename BK> |
|
| 2344 |
static CombinedArcMap<FW, const BK> |
|
| 2345 |
combinedArcMap(FW& forward, const BK& backward) {
|
|
| 2346 |
return CombinedArcMap<FW, const BK>(forward, backward); |
|
| 2342 | 2347 |
} |
| 2343 | 2348 |
|
| 2344 |
template <typename ForwardMap, typename BackwardMap> |
|
| 2345 |
static CombinedArcMap<const ForwardMap, const BackwardMap> |
|
| 2346 |
combinedArcMap(const ForwardMap& forward, const BackwardMap& backward) {
|
|
| 2347 |
return CombinedArcMap<const ForwardMap, |
|
| 2348 |
|
|
| 2349 |
template <typename FW, typename BK> |
|
| 2350 |
static CombinedArcMap<const FW, const BK> |
|
| 2351 |
combinedArcMap(const FW& forward, const BK& backward) {
|
|
| 2352 |
return CombinedArcMap<const FW, const BK>(forward, backward); |
|
| 2349 | 2353 |
} |
| 2350 | 2354 |
|
| 2351 | 2355 |
}; |
| 2352 | 2356 |
|
| 2353 | 2357 |
/// \brief Returns a read-only Undirector adaptor |
| 2354 | 2358 |
/// |
| 2355 | 2359 |
/// This function just returns a read-only \ref Undirector adaptor. |
| 2356 | 2360 |
/// \ingroup graph_adaptors |
| 2357 | 2361 |
/// \relates Undirector |
| 2358 |
template<typename GR> |
|
| 2359 |
Undirector<const GR> undirector(const GR& digraph) {
|
|
| 2360 |
|
|
| 2362 |
template<typename DGR> |
|
| 2363 |
Undirector<const DGR> undirector(const DGR& digraph) {
|
|
| 2364 |
return Undirector<const DGR>(digraph); |
|
| 2361 | 2365 |
} |
| 2362 | 2366 |
|
| 2363 | 2367 |
|
| 2364 |
template <typename |
|
| 2368 |
template <typename GR, typename DM> |
|
| 2365 | 2369 |
class OrienterBase {
|
| 2366 | 2370 |
public: |
| 2367 | 2371 |
|
| 2368 |
typedef _Graph Graph; |
|
| 2369 |
typedef _DirectionMap DirectionMap; |
|
| 2370 |
|
|
| 2371 |
typedef typename Graph::Node Node; |
|
| 2372 |
typedef |
|
| 2372 |
typedef GR Graph; |
|
| 2373 |
typedef DM DirectionMap; |
|
| 2374 |
|
|
| 2375 |
typedef typename GR::Node Node; |
|
| 2376 |
typedef typename GR::Edge Arc; |
|
| 2373 | 2377 |
|
| 2374 | 2378 |
void reverseArc(const Arc& arc) {
|
| 2375 | 2379 |
_direction->set(arc, !(*_direction)[arc]); |
| 2376 | 2380 |
} |
| 2377 | 2381 |
|
| 2378 | 2382 |
void first(Node& i) const { _graph->first(i); }
|
| 2379 | 2383 |
void first(Arc& i) const { _graph->first(i); }
|
| 2380 | 2384 |
void firstIn(Arc& i, const Node& n) const {
|
| 2381 | 2385 |
bool d = true; |
| 2382 | 2386 |
_graph->firstInc(i, d, n); |
| 2383 | 2387 |
while (i != INVALID && d == (*_direction)[i]) _graph->nextInc(i, d); |
| 2384 | 2388 |
} |
| 2385 | 2389 |
void firstOut(Arc& i, const Node& n ) const {
|
| 2386 | 2390 |
bool d = true; |
| 2387 | 2391 |
_graph->firstInc(i, d, n); |
| 2388 | 2392 |
while (i != INVALID && d != (*_direction)[i]) _graph->nextInc(i, d); |
| 2389 | 2393 |
} |
| 2390 | 2394 |
|
| 2391 | 2395 |
void next(Node& i) const { _graph->next(i); }
|
| 2392 | 2396 |
void next(Arc& i) const { _graph->next(i); }
|
| 2393 | 2397 |
void nextIn(Arc& i) const {
|
| 2394 | 2398 |
bool d = !(*_direction)[i]; |
| 2395 | 2399 |
_graph->nextInc(i, d); |
| 2396 | 2400 |
while (i != INVALID && d == (*_direction)[i]) _graph->nextInc(i, d); |
| 2397 | 2401 |
} |
| 2398 | 2402 |
void nextOut(Arc& i) const {
|
| 2399 | 2403 |
bool d = (*_direction)[i]; |
| 2400 | 2404 |
_graph->nextInc(i, d); |
| 2401 | 2405 |
while (i != INVALID && d != (*_direction)[i]) _graph->nextInc(i, d); |
| 2402 | 2406 |
} |
| 2403 | 2407 |
|
| 2404 | 2408 |
Node source(const Arc& e) const {
|
| 2405 | 2409 |
return (*_direction)[e] ? _graph->u(e) : _graph->v(e); |
| 2406 | 2410 |
} |
| 2407 | 2411 |
Node target(const Arc& e) const {
|
| 2408 | 2412 |
return (*_direction)[e] ? _graph->v(e) : _graph->u(e); |
| 2409 | 2413 |
} |
| 2410 | 2414 |
|
| 2411 | 2415 |
typedef NodeNumTagIndicator<Graph> NodeNumTag; |
| 2412 | 2416 |
int nodeNum() const { return _graph->nodeNum(); }
|
| 2413 | 2417 |
|
| 2414 | 2418 |
typedef EdgeNumTagIndicator<Graph> ArcNumTag; |
| 2415 | 2419 |
int arcNum() const { return _graph->edgeNum(); }
|
| 2416 | 2420 |
|
| 2417 | 2421 |
typedef FindEdgeTagIndicator<Graph> FindArcTag; |
| 2418 | 2422 |
Arc findArc(const Node& u, const Node& v, |
| 2419 | 2423 |
const Arc& prev = INVALID) const {
|
| 2420 | 2424 |
Arc arc = _graph->findEdge(u, v, prev); |
| 2421 | 2425 |
while (arc != INVALID && source(arc) != u) {
|
| 2422 | 2426 |
arc = _graph->findEdge(u, v, arc); |
| 2423 | 2427 |
} |
| 2424 | 2428 |
return arc; |
| 2425 | 2429 |
} |
| 2426 | 2430 |
|
| 2427 | 2431 |
Node addNode() {
|
| 2428 | 2432 |
return Node(_graph->addNode()); |
| 2429 | 2433 |
} |
| 2430 | 2434 |
|
| 2431 | 2435 |
Arc addArc(const Node& u, const Node& v) {
|
| 2432 | 2436 |
Arc arc = _graph->addEdge(u, v); |
| 2433 | 2437 |
_direction->set(arc, _graph->u(arc) == u); |
| 2434 | 2438 |
return arc; |
| 2435 | 2439 |
} |
| 2436 | 2440 |
|
| 2437 | 2441 |
void erase(const Node& i) { _graph->erase(i); }
|
| 2438 | 2442 |
void erase(const Arc& i) { _graph->erase(i); }
|
| 2439 | 2443 |
|
| 2440 | 2444 |
void clear() { _graph->clear(); }
|
| 2441 | 2445 |
|
| 2442 | 2446 |
int id(const Node& v) const { return _graph->id(v); }
|
| 2443 | 2447 |
int id(const Arc& e) const { return _graph->id(e); }
|
| 2444 | 2448 |
|
| 2445 | 2449 |
Node nodeFromId(int idx) const { return _graph->nodeFromId(idx); }
|
| 2446 | 2450 |
Arc arcFromId(int idx) const { return _graph->edgeFromId(idx); }
|
| 2447 | 2451 |
|
| 2448 | 2452 |
int maxNodeId() const { return _graph->maxNodeId(); }
|
| 2449 | 2453 |
int maxArcId() const { return _graph->maxEdgeId(); }
|
| 2450 | 2454 |
|
| 2451 |
typedef typename ItemSetTraits< |
|
| 2455 |
typedef typename ItemSetTraits<GR, Node>::ItemNotifier NodeNotifier; |
|
| 2452 | 2456 |
NodeNotifier& notifier(Node) const { return _graph->notifier(Node()); }
|
| 2453 | 2457 |
|
| 2454 |
typedef typename ItemSetTraits< |
|
| 2458 |
typedef typename ItemSetTraits<GR, Arc>::ItemNotifier ArcNotifier; |
|
| 2455 | 2459 |
ArcNotifier& notifier(Arc) const { return _graph->notifier(Arc()); }
|
| 2456 | 2460 |
|
| 2457 |
template <typename _Value> |
|
| 2458 |
class NodeMap : public _Graph::template NodeMap<_Value> {
|
|
| 2461 |
template <typename V> |
|
| 2462 |
class NodeMap : public GR::template NodeMap<V> {
|
|
| 2463 |
typedef typename GR::template NodeMap<V> Parent; |
|
| 2464 |
|
|
| 2459 | 2465 |
public: |
| 2460 | 2466 |
|
| 2461 |
typedef typename _Graph::template NodeMap<_Value> Parent; |
|
| 2462 |
|
|
| 2463 |
explicit NodeMap(const OrienterBase& adapter) |
|
| 2467 |
explicit NodeMap(const OrienterBase<GR, DM>& adapter) |
|
| 2464 | 2468 |
: Parent(*adapter._graph) {}
|
| 2465 | 2469 |
|
| 2466 |
NodeMap(const OrienterBase& adapter, const |
|
| 2470 |
NodeMap(const OrienterBase<GR, DM>& adapter, const V& value) |
|
| 2467 | 2471 |
: Parent(*adapter._graph, value) {}
|
| 2468 | 2472 |
|
| 2469 | 2473 |
private: |
| 2470 | 2474 |
NodeMap& operator=(const NodeMap& cmap) {
|
| 2471 | 2475 |
return operator=<NodeMap>(cmap); |
| 2472 | 2476 |
} |
| 2473 | 2477 |
|
| 2474 | 2478 |
template <typename CMap> |
| 2475 | 2479 |
NodeMap& operator=(const CMap& cmap) {
|
| 2476 | 2480 |
Parent::operator=(cmap); |
| 2477 | 2481 |
return *this; |
| 2478 | 2482 |
} |
| 2479 | 2483 |
|
| 2480 | 2484 |
}; |
| 2481 | 2485 |
|
| 2482 |
template <typename _Value> |
|
| 2483 |
class ArcMap : public _Graph::template EdgeMap<_Value> {
|
|
| 2486 |
template <typename V> |
|
| 2487 |
class ArcMap : public GR::template EdgeMap<V> {
|
|
| 2488 |
typedef typename Graph::template EdgeMap<V> Parent; |
|
| 2489 |
|
|
| 2484 | 2490 |
public: |
| 2485 | 2491 |
|
| 2486 |
typedef typename Graph::template EdgeMap<_Value> Parent; |
|
| 2487 |
|
|
| 2488 |
explicit ArcMap(const OrienterBase& adapter) |
|
| 2492 |
explicit ArcMap(const OrienterBase<GR, DM>& adapter) |
|
| 2489 | 2493 |
: Parent(*adapter._graph) { }
|
| 2490 | 2494 |
|
| 2491 |
ArcMap(const OrienterBase& adapter, const |
|
| 2495 |
ArcMap(const OrienterBase<GR, DM>& adapter, const V& value) |
|
| 2492 | 2496 |
: Parent(*adapter._graph, value) { }
|
| 2493 | 2497 |
|
| 2494 | 2498 |
private: |
| 2495 | 2499 |
ArcMap& operator=(const ArcMap& cmap) {
|
| 2496 | 2500 |
return operator=<ArcMap>(cmap); |
| 2497 | 2501 |
} |
| 2498 | 2502 |
|
| 2499 | 2503 |
template <typename CMap> |
| 2500 | 2504 |
ArcMap& operator=(const CMap& cmap) {
|
| 2501 | 2505 |
Parent::operator=(cmap); |
| 2502 | 2506 |
return *this; |
| 2503 | 2507 |
} |
| 2504 | 2508 |
}; |
| 2505 | 2509 |
|
| 2506 | 2510 |
|
| 2507 | 2511 |
|
| 2508 | 2512 |
protected: |
| 2509 | 2513 |
Graph* _graph; |
| 2510 |
DirectionMap* _direction; |
|
| 2511 |
|
|
| 2512 |
|
|
| 2514 |
DM* _direction; |
|
| 2515 |
|
|
| 2516 |
void initialize(GR& graph, DM& direction) {
|
|
| 2517 |
_graph = &graph; |
|
| 2513 | 2518 |
_direction = &direction; |
| 2514 | 2519 |
} |
| 2515 | 2520 |
|
| 2516 |
void setGraph(Graph& graph) {
|
|
| 2517 |
_graph = &graph; |
|
| 2518 |
} |
|
| 2519 |
|
|
| 2520 | 2521 |
}; |
| 2521 | 2522 |
|
| 2522 | 2523 |
/// \ingroup graph_adaptors |
| 2523 | 2524 |
/// |
| 2524 | 2525 |
/// \brief Adaptor class for orienting the edges of a graph to get a digraph |
| 2525 | 2526 |
/// |
| 2526 | 2527 |
/// Orienter adaptor can be used for orienting the edges of a graph to |
| 2527 | 2528 |
/// get a digraph. A \c bool edge map of the underlying graph must be |
| 2528 | 2529 |
/// specified, which define the direction of the arcs in the adaptor. |
| 2529 | 2530 |
/// The arcs can be easily reversed by the \c reverseArc() member function |
| 2530 | 2531 |
/// of the adaptor. |
| 2531 | 2532 |
/// This class conforms to the \ref concepts::Digraph "Digraph" concept. |
| 2532 | 2533 |
/// |
| 2533 | 2534 |
/// The adapted graph can also be modified through this adaptor |
| 2534 | 2535 |
/// by adding or removing nodes or arcs, unless the \c GR template |
| 2535 | 2536 |
/// parameter is set to be \c const. |
| 2536 | 2537 |
/// |
| 2537 | 2538 |
/// \tparam GR The type of the adapted graph. |
| 2538 | 2539 |
/// It must conform to the \ref concepts::Graph "Graph" concept. |
| 2539 | 2540 |
/// It can also be specified to be \c const. |
| 2540 | 2541 |
/// \tparam DM The type of the direction map. |
| 2541 | 2542 |
/// It must be a \c bool (or convertible) edge map of the |
| 2542 | 2543 |
/// adapted graph. The default type is |
| 2543 | 2544 |
/// \ref concepts::Graph::EdgeMap "GR::EdgeMap<bool>". |
| 2544 | 2545 |
/// |
| 2545 | 2546 |
/// \note The \c Node type of this adaptor and the adapted graph are |
| 2546 | 2547 |
/// convertible to each other, moreover the \c Arc type of the adaptor |
| 2547 | 2548 |
/// and the \c Edge type of the adapted graph are also convertible to |
| 2548 | 2549 |
/// each other. |
| 2549 | 2550 |
#ifdef DOXYGEN |
| 2550 | 2551 |
template<typename GR, |
| 2551 | 2552 |
typename DM> |
| 2552 | 2553 |
class Orienter {
|
| 2553 | 2554 |
#else |
| 2554 | 2555 |
template<typename GR, |
| 2555 | 2556 |
typename DM = typename GR::template EdgeMap<bool> > |
| 2556 | 2557 |
class Orienter : |
| 2557 | 2558 |
public DigraphAdaptorExtender<OrienterBase<GR, DM> > {
|
| 2558 | 2559 |
#endif |
| 2560 |
typedef DigraphAdaptorExtender<OrienterBase<GR, DM> > Parent; |
|
| 2559 | 2561 |
public: |
| 2560 | 2562 |
|
| 2561 | 2563 |
/// The type of the adapted graph. |
| 2562 | 2564 |
typedef GR Graph; |
| 2563 | 2565 |
/// The type of the direction edge map. |
| 2564 | 2566 |
typedef DM DirectionMap; |
| 2565 | 2567 |
|
| 2566 |
typedef DigraphAdaptorExtender<OrienterBase<GR, DM> > Parent; |
|
| 2567 | 2568 |
typedef typename Parent::Arc Arc; |
| 2569 |
|
|
| 2568 | 2570 |
protected: |
| 2569 | 2571 |
Orienter() { }
|
| 2572 |
|
|
| 2570 | 2573 |
public: |
| 2571 | 2574 |
|
| 2572 | 2575 |
/// \brief Constructor |
| 2573 | 2576 |
/// |
| 2574 | 2577 |
/// Constructor of the adaptor. |
| 2575 |
Orienter(Graph& graph, DirectionMap& direction) {
|
|
| 2576 |
setGraph(graph); |
|
| 2577 |
|
|
| 2578 |
Orienter(GR& graph, DM& direction) {
|
|
| 2579 |
Parent::initialize(graph, direction); |
|
| 2578 | 2580 |
} |
| 2579 | 2581 |
|
| 2580 | 2582 |
/// \brief Reverses the given arc |
| 2581 | 2583 |
/// |
| 2582 | 2584 |
/// This function reverses the given arc. |
| 2583 | 2585 |
/// It is done by simply negate the assigned value of \c a |
| 2584 | 2586 |
/// in the direction map. |
| 2585 | 2587 |
void reverseArc(const Arc& a) {
|
| 2586 | 2588 |
Parent::reverseArc(a); |
| 2587 | 2589 |
} |
| 2588 | 2590 |
}; |
| 2589 | 2591 |
|
| 2590 | 2592 |
/// \brief Returns a read-only Orienter adaptor |
| 2591 | 2593 |
/// |
| 2592 | 2594 |
/// This function just returns a read-only \ref Orienter adaptor. |
| 2593 | 2595 |
/// \ingroup graph_adaptors |
| 2594 | 2596 |
/// \relates Orienter |
| 2595 | 2597 |
template<typename GR, typename DM> |
| 2596 | 2598 |
Orienter<const GR, DM> |
| 2597 |
orienter(const GR& graph, DM& direction_map) {
|
|
| 2598 |
return Orienter<const GR, DM>(graph, direction_map); |
|
| 2599 |
orienter(const GR& graph, DM& direction) {
|
|
| 2600 |
return Orienter<const GR, DM>(graph, direction); |
|
| 2599 | 2601 |
} |
| 2600 | 2602 |
|
| 2601 | 2603 |
template<typename GR, typename DM> |
| 2602 | 2604 |
Orienter<const GR, const DM> |
| 2603 |
orienter(const GR& graph, const DM& direction_map) {
|
|
| 2604 |
return Orienter<const GR, const DM>(graph, direction_map); |
|
| 2605 |
orienter(const GR& graph, const DM& direction) {
|
|
| 2606 |
return Orienter<const GR, const DM>(graph, direction); |
|
| 2605 | 2607 |
} |
| 2606 | 2608 |
|
| 2607 | 2609 |
namespace _adaptor_bits {
|
| 2608 | 2610 |
|
| 2609 |
template<typename Digraph, |
|
| 2610 |
typename CapacityMap, |
|
| 2611 |
typename FlowMap, |
|
| 2612 |
typename Tolerance> |
|
| 2611 |
template <typename DGR, typename CM, typename FM, typename TL> |
|
| 2613 | 2612 |
class ResForwardFilter {
|
| 2614 | 2613 |
public: |
| 2615 | 2614 |
|
| 2616 |
typedef typename |
|
| 2615 |
typedef typename DGR::Arc Key; |
|
| 2617 | 2616 |
typedef bool Value; |
| 2618 | 2617 |
|
| 2619 | 2618 |
private: |
| 2620 | 2619 |
|
| 2621 |
const CapacityMap* _capacity; |
|
| 2622 |
const FlowMap* _flow; |
|
| 2623 |
|
|
| 2620 |
const CM* _capacity; |
|
| 2621 |
const FM* _flow; |
|
| 2622 |
TL _tolerance; |
|
| 2623 |
|
|
| 2624 | 2624 |
public: |
| 2625 | 2625 |
|
| 2626 |
ResForwardFilter(const CapacityMap& capacity, const FlowMap& flow, |
|
| 2627 |
const Tolerance& tolerance = Tolerance()) |
|
| 2626 |
ResForwardFilter(const CM& capacity, const FM& flow, |
|
| 2627 |
const TL& tolerance = TL()) |
|
| 2628 | 2628 |
: _capacity(&capacity), _flow(&flow), _tolerance(tolerance) { }
|
| 2629 | 2629 |
|
| 2630 |
bool operator[](const typename |
|
| 2630 |
bool operator[](const typename DGR::Arc& a) const {
|
|
| 2631 | 2631 |
return _tolerance.positive((*_capacity)[a] - (*_flow)[a]); |
| 2632 | 2632 |
} |
| 2633 | 2633 |
}; |
| 2634 | 2634 |
|
| 2635 |
template<typename Digraph, |
|
| 2636 |
typename CapacityMap, |
|
| 2637 |
typename FlowMap, |
|
| 2638 |
typename Tolerance> |
|
| 2635 |
template<typename DGR,typename CM, typename FM, typename TL> |
|
| 2639 | 2636 |
class ResBackwardFilter {
|
| 2640 | 2637 |
public: |
| 2641 | 2638 |
|
| 2642 |
typedef typename |
|
| 2639 |
typedef typename DGR::Arc Key; |
|
| 2643 | 2640 |
typedef bool Value; |
| 2644 | 2641 |
|
| 2645 | 2642 |
private: |
| 2646 | 2643 |
|
| 2647 |
const CapacityMap* _capacity; |
|
| 2648 |
const FlowMap* _flow; |
|
| 2649 |
|
|
| 2644 |
const CM* _capacity; |
|
| 2645 |
const FM* _flow; |
|
| 2646 |
TL _tolerance; |
|
| 2650 | 2647 |
|
| 2651 | 2648 |
public: |
| 2652 | 2649 |
|
| 2653 |
ResBackwardFilter(const CapacityMap& capacity, const FlowMap& flow, |
|
| 2654 |
const Tolerance& tolerance = Tolerance()) |
|
| 2650 |
ResBackwardFilter(const CM& capacity, const FM& flow, |
|
| 2651 |
const TL& tolerance = TL()) |
|
| 2655 | 2652 |
: _capacity(&capacity), _flow(&flow), _tolerance(tolerance) { }
|
| 2656 | 2653 |
|
| 2657 |
bool operator[](const typename |
|
| 2654 |
bool operator[](const typename DGR::Arc& a) const {
|
|
| 2658 | 2655 |
return _tolerance.positive((*_flow)[a]); |
| 2659 | 2656 |
} |
| 2660 | 2657 |
}; |
| 2661 | 2658 |
|
| 2662 | 2659 |
} |
| 2663 | 2660 |
|
| 2664 | 2661 |
/// \ingroup graph_adaptors |
| 2665 | 2662 |
/// |
| 2666 | 2663 |
/// \brief Adaptor class for composing the residual digraph for directed |
| 2667 | 2664 |
/// flow and circulation problems. |
| 2668 | 2665 |
/// |
| 2669 | 2666 |
/// ResidualDigraph can be used for composing the \e residual digraph |
| 2670 | 2667 |
/// for directed flow and circulation problems. Let \f$ G=(V, A) \f$ |
| 2671 | 2668 |
/// be a directed graph and let \f$ F \f$ be a number type. |
| 2672 | 2669 |
/// Let \f$ flow, cap: A\to F \f$ be functions on the arcs. |
| 2673 | 2670 |
/// This adaptor implements a digraph structure with node set \f$ V \f$ |
| 2674 | 2671 |
/// and arc set \f$ A_{forward}\cup A_{backward} \f$,
|
| 2675 | 2672 |
/// where \f$ A_{forward}=\{uv : uv\in A, flow(uv)<cap(uv)\} \f$ and
|
| 2676 | 2673 |
/// \f$ A_{backward}=\{vu : uv\in A, flow(uv)>0\} \f$, i.e. the so
|
| 2677 | 2674 |
/// called residual digraph. |
| 2678 | 2675 |
/// When the union \f$ A_{forward}\cup A_{backward} \f$ is taken,
|
| 2679 | 2676 |
/// multiplicities are counted, i.e. the adaptor has exactly |
| 2680 | 2677 |
/// \f$ |A_{forward}| + |A_{backward}|\f$ arcs (it may have parallel
|
| 2681 | 2678 |
/// arcs). |
| 2682 | 2679 |
/// This class conforms to the \ref concepts::Digraph "Digraph" concept. |
| 2683 | 2680 |
/// |
| 2684 |
/// \tparam |
|
| 2681 |
/// \tparam DGR The type of the adapted digraph. |
|
| 2685 | 2682 |
/// It must conform to the \ref concepts::Digraph "Digraph" concept. |
| 2686 | 2683 |
/// It is implicitly \c const. |
| 2687 | 2684 |
/// \tparam CM The type of the capacity map. |
| 2688 | 2685 |
/// It must be an arc map of some numerical type, which defines |
| 2689 | 2686 |
/// the capacities in the flow problem. It is implicitly \c const. |
| 2690 | 2687 |
/// The default type is |
| 2691 | 2688 |
/// \ref concepts::Digraph::ArcMap "GR::ArcMap<int>". |
| 2692 | 2689 |
/// \tparam FM The type of the flow map. |
| 2693 | 2690 |
/// It must be an arc map of some numerical type, which defines |
| 2694 | 2691 |
/// the flow values in the flow problem. The default type is \c CM. |
| 2695 | 2692 |
/// \tparam TL The tolerance type for handling inexact computation. |
| 2696 | 2693 |
/// The default tolerance type depends on the value type of the |
| 2697 | 2694 |
/// capacity map. |
| 2698 | 2695 |
/// |
| 2699 | 2696 |
/// \note This adaptor is implemented using Undirector and FilterArcs |
| 2700 | 2697 |
/// adaptors. |
| 2701 | 2698 |
/// |
| 2702 | 2699 |
/// \note The \c Node type of this adaptor and the adapted digraph are |
| 2703 | 2700 |
/// convertible to each other, moreover the \c Arc type of the adaptor |
| 2704 | 2701 |
/// is convertible to the \c Arc type of the adapted digraph. |
| 2705 | 2702 |
#ifdef DOXYGEN |
| 2706 |
template<typename |
|
| 2703 |
template<typename DGR, typename CM, typename FM, typename TL> |
|
| 2707 | 2704 |
class ResidualDigraph |
| 2708 | 2705 |
#else |
| 2709 |
template<typename GR, |
|
| 2710 |
typename CM = typename GR::template ArcMap<int>, |
|
| 2706 |
template<typename DGR, |
|
| 2707 |
typename CM = typename DGR::template ArcMap<int>, |
|
| 2711 | 2708 |
typename FM = CM, |
| 2712 | 2709 |
typename TL = Tolerance<typename CM::Value> > |
| 2713 |
class ResidualDigraph : |
|
| 2714 |
public FilterArcs< |
|
| 2715 |
Undirector<const GR>, |
|
| 2716 |
typename Undirector<const GR>::template CombinedArcMap< |
|
| 2717 |
_adaptor_bits::ResForwardFilter<const GR, CM, FM, TL>, |
|
| 2718 |
_adaptor_bits::ResBackwardFilter<const GR, CM, FM, TL> > > |
|
| 2710 |
class ResidualDigraph |
|
| 2711 |
: public SubDigraph< |
|
| 2712 |
Undirector<const DGR>, |
|
| 2713 |
ConstMap<typename DGR::Node, Const<bool, true> >, |
|
| 2714 |
typename Undirector<const DGR>::template CombinedArcMap< |
|
| 2715 |
_adaptor_bits::ResForwardFilter<const DGR, CM, FM, TL>, |
|
| 2716 |
_adaptor_bits::ResBackwardFilter<const DGR, CM, FM, TL> > > |
|
| 2719 | 2717 |
#endif |
| 2720 | 2718 |
{
|
| 2721 | 2719 |
public: |
| 2722 | 2720 |
|
| 2723 | 2721 |
/// The type of the underlying digraph. |
| 2724 |
typedef |
|
| 2722 |
typedef DGR Digraph; |
|
| 2725 | 2723 |
/// The type of the capacity map. |
| 2726 | 2724 |
typedef CM CapacityMap; |
| 2727 | 2725 |
/// The type of the flow map. |
| 2728 | 2726 |
typedef FM FlowMap; |
| 2729 | 2727 |
/// The tolerance type. |
| 2730 | 2728 |
typedef TL Tolerance; |
| 2731 | 2729 |
|
| 2732 | 2730 |
typedef typename CapacityMap::Value Value; |
| 2733 | 2731 |
typedef ResidualDigraph Adaptor; |
| 2734 | 2732 |
|
| 2735 | 2733 |
protected: |
| 2736 | 2734 |
|
| 2737 | 2735 |
typedef Undirector<const Digraph> Undirected; |
| 2738 | 2736 |
|
| 2739 |
typedef _adaptor_bits::ResForwardFilter<const Digraph, CapacityMap, |
|
| 2740 |
FlowMap, Tolerance> ForwardFilter; |
|
| 2741 |
|
|
| 2742 |
typedef _adaptor_bits::ResBackwardFilter<const Digraph, CapacityMap, |
|
| 2743 |
|
|
| 2737 |
typedef ConstMap<typename DGR::Node, Const<bool, true> > NodeFilter; |
|
| 2738 |
|
|
| 2739 |
typedef _adaptor_bits::ResForwardFilter<const DGR, CM, |
|
| 2740 |
FM, TL> ForwardFilter; |
|
| 2741 |
|
|
| 2742 |
typedef _adaptor_bits::ResBackwardFilter<const DGR, CM, |
|
| 2743 |
FM, TL> BackwardFilter; |
|
| 2744 | 2744 |
|
| 2745 | 2745 |
typedef typename Undirected:: |
| 2746 | 2746 |
template CombinedArcMap<ForwardFilter, BackwardFilter> ArcFilter; |
| 2747 | 2747 |
|
| 2748 |
typedef |
|
| 2748 |
typedef SubDigraph<Undirected, NodeFilter, ArcFilter> Parent; |
|
| 2749 | 2749 |
|
| 2750 | 2750 |
const CapacityMap* _capacity; |
| 2751 | 2751 |
FlowMap* _flow; |
| 2752 | 2752 |
|
| 2753 | 2753 |
Undirected _graph; |
| 2754 |
NodeFilter _node_filter; |
|
| 2754 | 2755 |
ForwardFilter _forward_filter; |
| 2755 | 2756 |
BackwardFilter _backward_filter; |
| 2756 | 2757 |
ArcFilter _arc_filter; |
| 2757 | 2758 |
|
| 2758 | 2759 |
public: |
| 2759 | 2760 |
|
| 2760 | 2761 |
/// \brief Constructor |
| 2761 | 2762 |
/// |
| 2762 | 2763 |
/// Constructor of the residual digraph adaptor. The parameters are the |
| 2763 | 2764 |
/// digraph, the capacity map, the flow map, and a tolerance object. |
| 2764 |
ResidualDigraph(const Digraph& digraph, const CapacityMap& capacity, |
|
| 2765 |
FlowMap& flow, const Tolerance& tolerance = Tolerance()) |
|
| 2766 |
|
|
| 2765 |
ResidualDigraph(const DGR& digraph, const CM& capacity, |
|
| 2766 |
FM& flow, const TL& tolerance = Tolerance()) |
|
| 2767 |
: Parent(), _capacity(&capacity), _flow(&flow), |
|
| 2768 |
_graph(digraph), _node_filter(), |
|
| 2767 | 2769 |
_forward_filter(capacity, flow, tolerance), |
| 2768 | 2770 |
_backward_filter(capacity, flow, tolerance), |
| 2769 | 2771 |
_arc_filter(_forward_filter, _backward_filter) |
| 2770 | 2772 |
{
|
| 2771 |
Parent::setDigraph(_graph); |
|
| 2772 |
Parent::setArcFilterMap(_arc_filter); |
|
| 2773 |
Parent::initialize(_graph, _node_filter, _arc_filter); |
|
| 2773 | 2774 |
} |
| 2774 | 2775 |
|
| 2775 | 2776 |
typedef typename Parent::Arc Arc; |
| 2776 | 2777 |
|
| 2777 | 2778 |
/// \brief Returns the residual capacity of the given arc. |
| 2778 | 2779 |
/// |
| 2779 | 2780 |
/// Returns the residual capacity of the given arc. |
| 2780 | 2781 |
Value residualCapacity(const Arc& a) const {
|
| 2781 | 2782 |
if (Undirected::direction(a)) {
|
| 2782 | 2783 |
return (*_capacity)[a] - (*_flow)[a]; |
| 2783 | 2784 |
} else {
|
| 2784 | 2785 |
return (*_flow)[a]; |
| 2785 | 2786 |
} |
| 2786 | 2787 |
} |
| 2787 | 2788 |
|
| 2788 | 2789 |
/// \brief Augments on the given arc in the residual digraph. |
| 2789 | 2790 |
/// |
| 2790 | 2791 |
/// Augments on the given arc in the residual digraph. It increases |
| 2791 | 2792 |
/// or decreases the flow value on the original arc according to the |
| 2792 | 2793 |
/// direction of the residual arc. |
| 2793 | 2794 |
void augment(const Arc& a, const Value& v) const {
|
| 2794 | 2795 |
if (Undirected::direction(a)) {
|
| 2795 | 2796 |
_flow->set(a, (*_flow)[a] + v); |
| 2796 | 2797 |
} else {
|
| 2797 | 2798 |
_flow->set(a, (*_flow)[a] - v); |
| 2798 | 2799 |
} |
| 2799 | 2800 |
} |
| 2800 | 2801 |
|
| 2801 | 2802 |
/// \brief Returns \c true if the given residual arc is a forward arc. |
| 2802 | 2803 |
/// |
| 2803 | 2804 |
/// Returns \c true if the given residual arc has the same orientation |
| 2804 | 2805 |
/// as the original arc, i.e. it is a so called forward arc. |
| 2805 | 2806 |
static bool forward(const Arc& a) {
|
| 2806 | 2807 |
return Undirected::direction(a); |
| 2807 | 2808 |
} |
| 2808 | 2809 |
|
| 2809 | 2810 |
/// \brief Returns \c true if the given residual arc is a backward arc. |
| 2810 | 2811 |
/// |
| 2811 | 2812 |
/// Returns \c true if the given residual arc has the opposite orientation |
| 2812 | 2813 |
/// than the original arc, i.e. it is a so called backward arc. |
| 2813 | 2814 |
static bool backward(const Arc& a) {
|
| 2814 | 2815 |
return !Undirected::direction(a); |
| 2815 | 2816 |
} |
| 2816 | 2817 |
|
| 2817 | 2818 |
/// \brief Returns the forward oriented residual arc. |
| 2818 | 2819 |
/// |
| 2819 | 2820 |
/// Returns the forward oriented residual arc related to the given |
| 2820 | 2821 |
/// arc of the underlying digraph. |
| 2821 | 2822 |
static Arc forward(const typename Digraph::Arc& a) {
|
| 2822 | 2823 |
return Undirected::direct(a, true); |
| 2823 | 2824 |
} |
| 2824 | 2825 |
|
| 2825 | 2826 |
/// \brief Returns the backward oriented residual arc. |
| 2826 | 2827 |
/// |
| 2827 | 2828 |
/// Returns the backward oriented residual arc related to the given |
| 2828 | 2829 |
/// arc of the underlying digraph. |
| 2829 | 2830 |
static Arc backward(const typename Digraph::Arc& a) {
|
| 2830 | 2831 |
return Undirected::direct(a, false); |
| 2831 | 2832 |
} |
| 2832 | 2833 |
|
| 2833 | 2834 |
/// \brief Residual capacity map. |
| 2834 | 2835 |
/// |
| 2835 | 2836 |
/// This map adaptor class can be used for obtaining the residual |
| 2836 | 2837 |
/// capacities as an arc map of the residual digraph. |
| 2837 | 2838 |
/// Its value type is inherited from the capacity map. |
| 2838 | 2839 |
class ResidualCapacity {
|
| 2839 | 2840 |
protected: |
| 2840 | 2841 |
const Adaptor* _adaptor; |
| 2841 | 2842 |
public: |
| 2842 | 2843 |
/// The key type of the map |
| 2843 | 2844 |
typedef Arc Key; |
| 2844 | 2845 |
/// The value type of the map |
| 2845 | 2846 |
typedef typename CapacityMap::Value Value; |
| 2846 | 2847 |
|
| 2847 | 2848 |
/// Constructor |
| 2848 |
ResidualCapacity(const |
|
| 2849 |
ResidualCapacity(const ResidualDigraph<DGR, CM, FM, TL>& adaptor) |
|
| 2850 |
: _adaptor(&adaptor) {}
|
|
| 2849 | 2851 |
|
| 2850 | 2852 |
/// Returns the value associated with the given residual arc |
| 2851 | 2853 |
Value operator[](const Arc& a) const {
|
| 2852 | 2854 |
return _adaptor->residualCapacity(a); |
| 2853 | 2855 |
} |
| 2854 | 2856 |
|
| 2855 | 2857 |
}; |
| 2856 | 2858 |
|
| 2857 | 2859 |
/// \brief Returns a residual capacity map |
| 2858 | 2860 |
/// |
| 2859 | 2861 |
/// This function just returns a residual capacity map. |
| 2860 | 2862 |
ResidualCapacity residualCapacity() const {
|
| 2861 | 2863 |
return ResidualCapacity(*this); |
| 2862 | 2864 |
} |
| 2863 | 2865 |
|
| 2864 | 2866 |
}; |
| 2865 | 2867 |
|
| 2866 | 2868 |
/// \brief Returns a (read-only) Residual adaptor |
| 2867 | 2869 |
/// |
| 2868 |
/// This function just returns a (read-only) \ref |
|
| 2870 |
/// This function just returns a (read-only) \ref ResidualDigraph adaptor. |
|
| 2869 | 2871 |
/// \ingroup graph_adaptors |
| 2870 |
/// \relates Residual |
|
| 2871 |
template<typename GR, typename CM, typename FM> |
|
| 2872 |
ResidualDigraph<GR, CM, FM> |
|
| 2873 |
residualDigraph(const GR& digraph, const CM& capacity_map, FM& flow_map) {
|
|
| 2874 |
|
|
| 2872 |
/// \relates ResidualDigraph |
|
| 2873 |
template<typename DGR, typename CM, typename FM> |
|
| 2874 |
ResidualDigraph<DGR, CM, FM> |
|
| 2875 |
residualDigraph(const DGR& digraph, const CM& capacity_map, FM& flow_map) {
|
|
| 2876 |
return ResidualDigraph<DGR, CM, FM> (digraph, capacity_map, flow_map); |
|
| 2875 | 2877 |
} |
| 2876 | 2878 |
|
| 2877 | 2879 |
|
| 2878 |
template <typename |
|
| 2880 |
template <typename DGR> |
|
| 2879 | 2881 |
class SplitNodesBase {
|
| 2882 |
typedef DigraphAdaptorBase<const DGR> Parent; |
|
| 2883 |
|
|
| 2880 | 2884 |
public: |
| 2881 | 2885 |
|
| 2882 |
typedef _Digraph Digraph; |
|
| 2883 |
typedef DigraphAdaptorBase<const _Digraph> Parent; |
|
| 2886 |
typedef DGR Digraph; |
|
| 2884 | 2887 |
typedef SplitNodesBase Adaptor; |
| 2885 | 2888 |
|
| 2886 |
typedef typename Digraph::Node DigraphNode; |
|
| 2887 |
typedef typename Digraph::Arc DigraphArc; |
|
| 2889 |
typedef typename DGR::Node DigraphNode; |
|
| 2890 |
typedef typename DGR::Arc DigraphArc; |
|
| 2888 | 2891 |
|
| 2889 | 2892 |
class Node; |
| 2890 | 2893 |
class Arc; |
| 2891 | 2894 |
|
| 2892 | 2895 |
private: |
| 2893 | 2896 |
|
| 2894 | 2897 |
template <typename T> class NodeMapBase; |
| 2895 | 2898 |
template <typename T> class ArcMapBase; |
| 2896 | 2899 |
|
| 2897 | 2900 |
public: |
| 2898 | 2901 |
|
| 2899 | 2902 |
class Node : public DigraphNode {
|
| 2900 | 2903 |
friend class SplitNodesBase; |
| 2901 | 2904 |
template <typename T> friend class NodeMapBase; |
| 2902 | 2905 |
private: |
| 2903 | 2906 |
|
| 2904 | 2907 |
bool _in; |
| 2905 | 2908 |
Node(DigraphNode node, bool in) |
| 2906 | 2909 |
: DigraphNode(node), _in(in) {}
|
| 2907 | 2910 |
|
| 2908 | 2911 |
public: |
| 2909 | 2912 |
|
| 2910 | 2913 |
Node() {}
|
| 2911 | 2914 |
Node(Invalid) : DigraphNode(INVALID), _in(true) {}
|
| 2912 | 2915 |
|
| 2913 | 2916 |
bool operator==(const Node& node) const {
|
| 2914 | 2917 |
return DigraphNode::operator==(node) && _in == node._in; |
| 2915 | 2918 |
} |
| 2916 | 2919 |
|
| 2917 | 2920 |
bool operator!=(const Node& node) const {
|
| 2918 | 2921 |
return !(*this == node); |
| 2919 | 2922 |
} |
| 2920 | 2923 |
|
| 2921 | 2924 |
bool operator<(const Node& node) const {
|
| 2922 | 2925 |
return DigraphNode::operator<(node) || |
| 2923 | 2926 |
(DigraphNode::operator==(node) && _in < node._in); |
| 2924 | 2927 |
} |
| 2925 | 2928 |
}; |
| 2926 | 2929 |
|
| 2927 | 2930 |
class Arc {
|
| 2928 | 2931 |
friend class SplitNodesBase; |
| 2929 | 2932 |
template <typename T> friend class ArcMapBase; |
| 2930 | 2933 |
private: |
| 2931 | 2934 |
typedef BiVariant<DigraphArc, DigraphNode> ArcImpl; |
| 2932 | 2935 |
|
| 2933 | 2936 |
explicit Arc(const DigraphArc& arc) : _item(arc) {}
|
| 2934 | 2937 |
explicit Arc(const DigraphNode& node) : _item(node) {}
|
| 2935 | 2938 |
|
| 2936 | 2939 |
ArcImpl _item; |
| 2937 | 2940 |
|
| 2938 | 2941 |
public: |
| 2939 | 2942 |
Arc() {}
|
| 2940 | 2943 |
Arc(Invalid) : _item(DigraphArc(INVALID)) {}
|
| 2941 | 2944 |
|
| 2942 | 2945 |
bool operator==(const Arc& arc) const {
|
| 2943 | 2946 |
if (_item.firstState()) {
|
| 2944 | 2947 |
if (arc._item.firstState()) {
|
| 2945 | 2948 |
return _item.first() == arc._item.first(); |
| 2946 | 2949 |
} |
| 2947 | 2950 |
} else {
|
| 2948 | 2951 |
if (arc._item.secondState()) {
|
| 2949 | 2952 |
return _item.second() == arc._item.second(); |
| 2950 | 2953 |
} |
| 2951 | 2954 |
} |
| 2952 | 2955 |
return false; |
| 2953 | 2956 |
} |
| 2954 | 2957 |
|
| 2955 | 2958 |
bool operator!=(const Arc& arc) const {
|
| 2956 | 2959 |
return !(*this == arc); |
| 2957 | 2960 |
} |
| 2958 | 2961 |
|
| 2959 | 2962 |
bool operator<(const Arc& arc) const {
|
| 2960 | 2963 |
if (_item.firstState()) {
|
| 2961 | 2964 |
if (arc._item.firstState()) {
|
| 2962 | 2965 |
return _item.first() < arc._item.first(); |
| 2963 | 2966 |
} |
| 2964 | 2967 |
return false; |
| 2965 | 2968 |
} else {
|
| 2966 | 2969 |
if (arc._item.secondState()) {
|
| 2967 | 2970 |
return _item.second() < arc._item.second(); |
| 2968 | 2971 |
} |
| 2969 | 2972 |
return true; |
| 2970 | 2973 |
} |
| 2971 | 2974 |
} |
| 2972 | 2975 |
|
| 2973 | 2976 |
operator DigraphArc() const { return _item.first(); }
|
| 2974 | 2977 |
operator DigraphNode() const { return _item.second(); }
|
| 2975 | 2978 |
|
| 2976 | 2979 |
}; |
| 2977 | 2980 |
|
| 2978 | 2981 |
void first(Node& n) const {
|
| 2979 | 2982 |
_digraph->first(n); |
| 2980 | 2983 |
n._in = true; |
| 2981 | 2984 |
} |
| 2982 | 2985 |
|
| 2983 | 2986 |
void next(Node& n) const {
|
| 2984 | 2987 |
if (n._in) {
|
| 2985 | 2988 |
n._in = false; |
| 2986 | 2989 |
} else {
|
| 2987 | 2990 |
n._in = true; |
| 2988 | 2991 |
_digraph->next(n); |
| 2989 | 2992 |
} |
| 2990 | 2993 |
} |
| 2991 | 2994 |
|
| 2992 | 2995 |
void first(Arc& e) const {
|
| 2993 | 2996 |
e._item.setSecond(); |
| 2994 | 2997 |
_digraph->first(e._item.second()); |
| 2995 | 2998 |
if (e._item.second() == INVALID) {
|
| 2996 | 2999 |
e._item.setFirst(); |
| 2997 | 3000 |
_digraph->first(e._item.first()); |
| 2998 | 3001 |
} |
| 2999 | 3002 |
} |
| 3000 | 3003 |
|
| 3001 | 3004 |
void next(Arc& e) const {
|
| 3002 | 3005 |
if (e._item.secondState()) {
|
| 3003 | 3006 |
_digraph->next(e._item.second()); |
| 3004 | 3007 |
if (e._item.second() == INVALID) {
|
| 3005 | 3008 |
e._item.setFirst(); |
| 3006 | 3009 |
_digraph->first(e._item.first()); |
| 3007 | 3010 |
} |
| 3008 | 3011 |
} else {
|
| 3009 | 3012 |
_digraph->next(e._item.first()); |
| 3010 | 3013 |
} |
| 3011 | 3014 |
} |
| 3012 | 3015 |
|
| 3013 | 3016 |
void firstOut(Arc& e, const Node& n) const {
|
| 3014 | 3017 |
if (n._in) {
|
| 3015 | 3018 |
e._item.setSecond(n); |
| 3016 | 3019 |
} else {
|
| 3017 | 3020 |
e._item.setFirst(); |
| 3018 | 3021 |
_digraph->firstOut(e._item.first(), n); |
| 3019 | 3022 |
} |
| 3020 | 3023 |
} |
| 3021 | 3024 |
|
| 3022 | 3025 |
void nextOut(Arc& e) const {
|
| 3023 | 3026 |
if (!e._item.firstState()) {
|
| 3024 | 3027 |
e._item.setFirst(INVALID); |
| 3025 | 3028 |
} else {
|
| 3026 | 3029 |
_digraph->nextOut(e._item.first()); |
| 3027 | 3030 |
} |
| 3028 | 3031 |
} |
| 3029 | 3032 |
|
| 3030 | 3033 |
void firstIn(Arc& e, const Node& n) const {
|
| 3031 | 3034 |
if (!n._in) {
|
| 3032 | 3035 |
e._item.setSecond(n); |
| 3033 | 3036 |
} else {
|
| 3034 | 3037 |
e._item.setFirst(); |
| 3035 | 3038 |
_digraph->firstIn(e._item.first(), n); |
| 3036 | 3039 |
} |
| 3037 | 3040 |
} |
| 3038 | 3041 |
|
| 3039 | 3042 |
void nextIn(Arc& e) const {
|
| 3040 | 3043 |
if (!e._item.firstState()) {
|
| 3041 | 3044 |
e._item.setFirst(INVALID); |
| 3042 | 3045 |
} else {
|
| 3043 | 3046 |
_digraph->nextIn(e._item.first()); |
| 3044 | 3047 |
} |
| 3045 | 3048 |
} |
| 3046 | 3049 |
|
| 3047 | 3050 |
Node source(const Arc& e) const {
|
| 3048 | 3051 |
if (e._item.firstState()) {
|
| 3049 | 3052 |
return Node(_digraph->source(e._item.first()), false); |
| 3050 | 3053 |
} else {
|
| 3051 | 3054 |
return Node(e._item.second(), true); |
| 3052 | 3055 |
} |
| 3053 | 3056 |
} |
| 3054 | 3057 |
|
| 3055 | 3058 |
Node target(const Arc& e) const {
|
| 3056 | 3059 |
if (e._item.firstState()) {
|
| 3057 | 3060 |
return Node(_digraph->target(e._item.first()), true); |
| 3058 | 3061 |
} else {
|
| 3059 | 3062 |
return Node(e._item.second(), false); |
| 3060 | 3063 |
} |
| 3061 | 3064 |
} |
| 3062 | 3065 |
|
| 3063 | 3066 |
int id(const Node& n) const {
|
| 3064 | 3067 |
return (_digraph->id(n) << 1) | (n._in ? 0 : 1); |
| 3065 | 3068 |
} |
| 3066 | 3069 |
Node nodeFromId(int ix) const {
|
| 3067 | 3070 |
return Node(_digraph->nodeFromId(ix >> 1), (ix & 1) == 0); |
| 3068 | 3071 |
} |
| 3069 | 3072 |
int maxNodeId() const {
|
| 3070 | 3073 |
return 2 * _digraph->maxNodeId() + 1; |
| 3071 | 3074 |
} |
| 3072 | 3075 |
|
| 3073 | 3076 |
int id(const Arc& e) const {
|
| 3074 | 3077 |
if (e._item.firstState()) {
|
| 3075 | 3078 |
return _digraph->id(e._item.first()) << 1; |
| 3076 | 3079 |
} else {
|
| 3077 | 3080 |
return (_digraph->id(e._item.second()) << 1) | 1; |
| 3078 | 3081 |
} |
| 3079 | 3082 |
} |
| 3080 | 3083 |
Arc arcFromId(int ix) const {
|
| 3081 | 3084 |
if ((ix & 1) == 0) {
|
| 3082 | 3085 |
return Arc(_digraph->arcFromId(ix >> 1)); |
| 3083 | 3086 |
} else {
|
| 3084 | 3087 |
return Arc(_digraph->nodeFromId(ix >> 1)); |
| 3085 | 3088 |
} |
| 3086 | 3089 |
} |
| 3087 | 3090 |
int maxArcId() const {
|
| 3088 | 3091 |
return std::max(_digraph->maxNodeId() << 1, |
| 3089 | 3092 |
(_digraph->maxArcId() << 1) | 1); |
| 3090 | 3093 |
} |
| 3091 | 3094 |
|
| 3092 | 3095 |
static bool inNode(const Node& n) {
|
| 3093 | 3096 |
return n._in; |
| 3094 | 3097 |
} |
| 3095 | 3098 |
|
| 3096 | 3099 |
static bool outNode(const Node& n) {
|
| 3097 | 3100 |
return !n._in; |
| 3098 | 3101 |
} |
| 3099 | 3102 |
|
| 3100 | 3103 |
static bool origArc(const Arc& e) {
|
| 3101 | 3104 |
return e._item.firstState(); |
| 3102 | 3105 |
} |
| 3103 | 3106 |
|
| 3104 | 3107 |
static bool bindArc(const Arc& e) {
|
| 3105 | 3108 |
return e._item.secondState(); |
| 3106 | 3109 |
} |
| 3107 | 3110 |
|
| 3108 | 3111 |
static Node inNode(const DigraphNode& n) {
|
| 3109 | 3112 |
return Node(n, true); |
| 3110 | 3113 |
} |
| 3111 | 3114 |
|
| 3112 | 3115 |
static Node outNode(const DigraphNode& n) {
|
| 3113 | 3116 |
return Node(n, false); |
| 3114 | 3117 |
} |
| 3115 | 3118 |
|
| 3116 | 3119 |
static Arc arc(const DigraphNode& n) {
|
| 3117 | 3120 |
return Arc(n); |
| 3118 | 3121 |
} |
| 3119 | 3122 |
|
| 3120 | 3123 |
static Arc arc(const DigraphArc& e) {
|
| 3121 | 3124 |
return Arc(e); |
| 3122 | 3125 |
} |
| 3123 | 3126 |
|
| 3124 | 3127 |
typedef True NodeNumTag; |
| 3125 | 3128 |
int nodeNum() const {
|
| 3126 | 3129 |
return 2 * countNodes(*_digraph); |
| 3127 | 3130 |
} |
| 3128 | 3131 |
|
| 3129 | 3132 |
typedef True ArcNumTag; |
| 3130 | 3133 |
int arcNum() const {
|
| 3131 | 3134 |
return countArcs(*_digraph) + countNodes(*_digraph); |
| 3132 | 3135 |
} |
| 3133 | 3136 |
|
| 3134 | 3137 |
typedef True FindArcTag; |
| 3135 | 3138 |
Arc findArc(const Node& u, const Node& v, |
| 3136 | 3139 |
const Arc& prev = INVALID) const {
|
| 3137 | 3140 |
if (inNode(u) && outNode(v)) {
|
| 3138 | 3141 |
if (static_cast<const DigraphNode&>(u) == |
| 3139 | 3142 |
static_cast<const DigraphNode&>(v) && prev == INVALID) {
|
| 3140 | 3143 |
return Arc(u); |
| 3141 | 3144 |
} |
| 3142 | 3145 |
} |
| 3143 | 3146 |
else if (outNode(u) && inNode(v)) {
|
| 3144 | 3147 |
return Arc(::lemon::findArc(*_digraph, u, v, prev)); |
| 3145 | 3148 |
} |
| 3146 | 3149 |
return INVALID; |
| 3147 | 3150 |
} |
| 3148 | 3151 |
|
| 3149 | 3152 |
private: |
| 3150 | 3153 |
|
| 3151 |
template <typename |
|
| 3154 |
template <typename V> |
|
| 3152 | 3155 |
class NodeMapBase |
| 3153 |
: public MapTraits<typename Parent::template NodeMap<_Value> > {
|
|
| 3154 |
typedef typename Parent::template NodeMap<_Value> NodeImpl; |
|
| 3156 |
: public MapTraits<typename Parent::template NodeMap<V> > {
|
|
| 3157 |
typedef typename Parent::template NodeMap<V> NodeImpl; |
|
| 3155 | 3158 |
public: |
| 3156 | 3159 |
typedef Node Key; |
| 3157 |
typedef |
|
| 3160 |
typedef V Value; |
|
| 3158 | 3161 |
typedef typename MapTraits<NodeImpl>::ReferenceMapTag ReferenceMapTag; |
| 3159 | 3162 |
typedef typename MapTraits<NodeImpl>::ReturnValue ReturnValue; |
| 3160 | 3163 |
typedef typename MapTraits<NodeImpl>::ConstReturnValue ConstReturnValue; |
| 3161 | 3164 |
typedef typename MapTraits<NodeImpl>::ReturnValue Reference; |
| 3162 | 3165 |
typedef typename MapTraits<NodeImpl>::ConstReturnValue ConstReference; |
| 3163 | 3166 |
|
| 3164 |
NodeMapBase(const |
|
| 3167 |
NodeMapBase(const SplitNodesBase<DGR>& adaptor) |
|
| 3165 | 3168 |
: _in_map(*adaptor._digraph), _out_map(*adaptor._digraph) {}
|
| 3166 |
NodeMapBase(const |
|
| 3169 |
NodeMapBase(const SplitNodesBase<DGR>& adaptor, const V& value) |
|
| 3167 | 3170 |
: _in_map(*adaptor._digraph, value), |
| 3168 | 3171 |
_out_map(*adaptor._digraph, value) {}
|
| 3169 | 3172 |
|
| 3170 |
void set(const Node& key, const Value& val) {
|
|
| 3171 |
if (Adaptor::inNode(key)) { _in_map.set(key, val); }
|
|
| 3173 |
void set(const Node& key, const V& val) {
|
|
| 3174 |
if (SplitNodesBase<DGR>::inNode(key)) { _in_map.set(key, val); }
|
|
| 3172 | 3175 |
else {_out_map.set(key, val); }
|
| 3173 | 3176 |
} |
| 3174 | 3177 |
|
| 3175 | 3178 |
ReturnValue operator[](const Node& key) {
|
| 3176 |
if ( |
|
| 3179 |
if (SplitNodesBase<DGR>::inNode(key)) { return _in_map[key]; }
|
|
| 3177 | 3180 |
else { return _out_map[key]; }
|
| 3178 | 3181 |
} |
| 3179 | 3182 |
|
| 3180 | 3183 |
ConstReturnValue operator[](const Node& key) const {
|
| 3181 | 3184 |
if (Adaptor::inNode(key)) { return _in_map[key]; }
|
| 3182 | 3185 |
else { return _out_map[key]; }
|
| 3183 | 3186 |
} |
| 3184 | 3187 |
|
| 3185 | 3188 |
private: |
| 3186 | 3189 |
NodeImpl _in_map, _out_map; |
| 3187 | 3190 |
}; |
| 3188 | 3191 |
|
| 3189 |
template <typename |
|
| 3192 |
template <typename V> |
|
| 3190 | 3193 |
class ArcMapBase |
| 3191 |
: public MapTraits<typename Parent::template ArcMap<_Value> > {
|
|
| 3192 |
typedef typename Parent::template ArcMap<_Value> ArcImpl; |
|
| 3193 |
|
|
| 3194 |
: public MapTraits<typename Parent::template ArcMap<V> > {
|
|
| 3195 |
typedef typename Parent::template ArcMap<V> ArcImpl; |
|
| 3196 |
typedef typename Parent::template NodeMap<V> NodeImpl; |
|
| 3194 | 3197 |
public: |
| 3195 | 3198 |
typedef Arc Key; |
| 3196 |
typedef |
|
| 3199 |
typedef V Value; |
|
| 3197 | 3200 |
typedef typename MapTraits<ArcImpl>::ReferenceMapTag ReferenceMapTag; |
| 3198 | 3201 |
typedef typename MapTraits<ArcImpl>::ReturnValue ReturnValue; |
| 3199 | 3202 |
typedef typename MapTraits<ArcImpl>::ConstReturnValue ConstReturnValue; |
| 3200 | 3203 |
typedef typename MapTraits<ArcImpl>::ReturnValue Reference; |
| 3201 | 3204 |
typedef typename MapTraits<ArcImpl>::ConstReturnValue ConstReference; |
| 3202 | 3205 |
|
| 3203 |
ArcMapBase(const |
|
| 3206 |
ArcMapBase(const SplitNodesBase<DGR>& adaptor) |
|
| 3204 | 3207 |
: _arc_map(*adaptor._digraph), _node_map(*adaptor._digraph) {}
|
| 3205 |
ArcMapBase(const |
|
| 3208 |
ArcMapBase(const SplitNodesBase<DGR>& adaptor, const V& value) |
|
| 3206 | 3209 |
: _arc_map(*adaptor._digraph, value), |
| 3207 | 3210 |
_node_map(*adaptor._digraph, value) {}
|
| 3208 | 3211 |
|
| 3209 |
void set(const Arc& key, const Value& val) {
|
|
| 3210 |
if (Adaptor::origArc(key)) {
|
|
| 3211 |
|
|
| 3212 |
void set(const Arc& key, const V& val) {
|
|
| 3213 |
if (SplitNodesBase<DGR>::origArc(key)) {
|
|
| 3214 |
_arc_map.set(static_cast<const DigraphArc&>(key), val); |
|
| 3212 | 3215 |
} else {
|
| 3213 |
_node_map.set( |
|
| 3216 |
_node_map.set(static_cast<const DigraphNode&>(key), val); |
|
| 3214 | 3217 |
} |
| 3215 | 3218 |
} |
| 3216 | 3219 |
|
| 3217 | 3220 |
ReturnValue operator[](const Arc& key) {
|
| 3218 |
if (Adaptor::origArc(key)) {
|
|
| 3219 |
return _arc_map[key._item.first()]; |
|
| 3221 |
if (SplitNodesBase<DGR>::origArc(key)) {
|
|
| 3222 |
return _arc_map[static_cast<const DigraphArc&>(key)]; |
|
| 3220 | 3223 |
} else {
|
| 3221 |
return _node_map[ |
|
| 3224 |
return _node_map[static_cast<const DigraphNode&>(key)]; |
|
| 3222 | 3225 |
} |
| 3223 | 3226 |
} |
| 3224 | 3227 |
|
| 3225 | 3228 |
ConstReturnValue operator[](const Arc& key) const {
|
| 3226 |
if (Adaptor::origArc(key)) {
|
|
| 3227 |
return _arc_map[key._item.first()]; |
|
| 3229 |
if (SplitNodesBase<DGR>::origArc(key)) {
|
|
| 3230 |
return _arc_map[static_cast<const DigraphArc&>(key)]; |
|
| 3228 | 3231 |
} else {
|
| 3229 |
return _node_map[ |
|
| 3232 |
return _node_map[static_cast<const DigraphNode&>(key)]; |
|
| 3230 | 3233 |
} |
| 3231 | 3234 |
} |
| 3232 | 3235 |
|
| 3233 | 3236 |
private: |
| 3234 | 3237 |
ArcImpl _arc_map; |
| 3235 | 3238 |
NodeImpl _node_map; |
| 3236 | 3239 |
}; |
| 3237 | 3240 |
|
| 3238 | 3241 |
public: |
| 3239 | 3242 |
|
| 3240 |
template <typename |
|
| 3243 |
template <typename V> |
|
| 3241 | 3244 |
class NodeMap |
| 3242 |
: public SubMapExtender<Adaptor, NodeMapBase<_Value> > |
|
| 3243 |
{
|
|
| 3245 |
: public SubMapExtender<SplitNodesBase<DGR>, NodeMapBase<V> > {
|
|
| 3246 |
typedef SubMapExtender<SplitNodesBase<DGR>, NodeMapBase<V> > Parent; |
|
| 3247 |
|
|
| 3244 | 3248 |
public: |
| 3245 |
typedef _Value Value; |
|
| 3246 |
typedef SubMapExtender<Adaptor, NodeMapBase<Value> > Parent; |
|
| 3247 |
|
|
| 3248 |
NodeMap(const Adaptor& adaptor) |
|
| 3249 |
typedef V Value; |
|
| 3250 |
|
|
| 3251 |
NodeMap(const SplitNodesBase<DGR>& adaptor) |
|
| 3249 | 3252 |
: Parent(adaptor) {}
|
| 3250 | 3253 |
|
| 3251 |
NodeMap(const |
|
| 3254 |
NodeMap(const SplitNodesBase<DGR>& adaptor, const V& value) |
|
| 3252 | 3255 |
: Parent(adaptor, value) {}
|
| 3253 | 3256 |
|
| 3254 | 3257 |
private: |
| 3255 | 3258 |
NodeMap& operator=(const NodeMap& cmap) {
|
| 3256 | 3259 |
return operator=<NodeMap>(cmap); |
| 3257 | 3260 |
} |
| 3258 | 3261 |
|
| 3259 | 3262 |
template <typename CMap> |
| 3260 | 3263 |
NodeMap& operator=(const CMap& cmap) {
|
| 3261 | 3264 |
Parent::operator=(cmap); |
| 3262 | 3265 |
return *this; |
| 3263 | 3266 |
} |
| 3264 | 3267 |
}; |
| 3265 | 3268 |
|
| 3266 |
template <typename |
|
| 3269 |
template <typename V> |
|
| 3267 | 3270 |
class ArcMap |
| 3268 |
: public SubMapExtender<Adaptor, ArcMapBase<_Value> > |
|
| 3269 |
{
|
|
| 3271 |
: public SubMapExtender<SplitNodesBase<DGR>, ArcMapBase<V> > {
|
|
| 3272 |
typedef SubMapExtender<SplitNodesBase<DGR>, ArcMapBase<V> > Parent; |
|
| 3273 |
|
|
| 3270 | 3274 |
public: |
| 3271 |
typedef _Value Value; |
|
| 3272 |
typedef SubMapExtender<Adaptor, ArcMapBase<Value> > Parent; |
|
| 3273 |
|
|
| 3274 |
ArcMap(const Adaptor& adaptor) |
|
| 3275 |
typedef V Value; |
|
| 3276 |
|
|
| 3277 |
ArcMap(const SplitNodesBase<DGR>& adaptor) |
|
| 3275 | 3278 |
: Parent(adaptor) {}
|
| 3276 | 3279 |
|
| 3277 |
ArcMap(const |
|
| 3280 |
ArcMap(const SplitNodesBase<DGR>& adaptor, const V& value) |
|
| 3278 | 3281 |
: Parent(adaptor, value) {}
|
| 3279 | 3282 |
|
| 3280 | 3283 |
private: |
| 3281 | 3284 |
ArcMap& operator=(const ArcMap& cmap) {
|
| 3282 | 3285 |
return operator=<ArcMap>(cmap); |
| 3283 | 3286 |
} |
| 3284 | 3287 |
|
| 3285 | 3288 |
template <typename CMap> |
| 3286 | 3289 |
ArcMap& operator=(const CMap& cmap) {
|
| 3287 | 3290 |
Parent::operator=(cmap); |
| 3288 | 3291 |
return *this; |
| 3289 | 3292 |
} |
| 3290 | 3293 |
}; |
| 3291 | 3294 |
|
| 3292 | 3295 |
protected: |
| 3293 | 3296 |
|
| 3294 | 3297 |
SplitNodesBase() : _digraph(0) {}
|
| 3295 | 3298 |
|
| 3296 |
Digraph* _digraph; |
|
| 3297 |
|
|
| 3298 |
|
|
| 3299 |
DGR* _digraph; |
|
| 3300 |
|
|
| 3301 |
void initialize(Digraph& digraph) {
|
|
| 3299 | 3302 |
_digraph = &digraph; |
| 3300 | 3303 |
} |
| 3301 | 3304 |
|
| 3302 | 3305 |
}; |
| 3303 | 3306 |
|
| 3304 | 3307 |
/// \ingroup graph_adaptors |
| 3305 | 3308 |
/// |
| 3306 | 3309 |
/// \brief Adaptor class for splitting the nodes of a digraph. |
| 3307 | 3310 |
/// |
| 3308 | 3311 |
/// SplitNodes adaptor can be used for splitting each node into an |
| 3309 | 3312 |
/// \e in-node and an \e out-node in a digraph. Formaly, the adaptor |
| 3310 | 3313 |
/// replaces each node \f$ u \f$ in the digraph with two nodes, |
| 3311 | 3314 |
/// namely node \f$ u_{in} \f$ and node \f$ u_{out} \f$.
|
| 3312 | 3315 |
/// If there is a \f$ (v, u) \f$ arc in the original digraph, then the |
| 3313 | 3316 |
/// new target of the arc will be \f$ u_{in} \f$ and similarly the
|
| 3314 | 3317 |
/// source of each original \f$ (u, v) \f$ arc will be \f$ u_{out} \f$.
|
| 3315 | 3318 |
/// The adaptor adds an additional \e bind \e arc from \f$ u_{in} \f$
|
| 3316 | 3319 |
/// to \f$ u_{out} \f$ for each node \f$ u \f$ of the original digraph.
|
| 3317 | 3320 |
/// |
| 3318 | 3321 |
/// The aim of this class is running an algorithm with respect to node |
| 3319 | 3322 |
/// costs or capacities if the algorithm considers only arc costs or |
| 3320 | 3323 |
/// capacities directly. |
| 3321 | 3324 |
/// In this case you can use \c SplitNodes adaptor, and set the node |
| 3322 | 3325 |
/// costs/capacities of the original digraph to the \e bind \e arcs |
| 3323 | 3326 |
/// in the adaptor. |
| 3324 | 3327 |
/// |
| 3325 |
/// \tparam |
|
| 3328 |
/// \tparam DGR The type of the adapted digraph. |
|
| 3326 | 3329 |
/// It must conform to the \ref concepts::Digraph "Digraph" concept. |
| 3327 | 3330 |
/// It is implicitly \c const. |
| 3328 | 3331 |
/// |
| 3329 | 3332 |
/// \note The \c Node type of this adaptor is converible to the \c Node |
| 3330 | 3333 |
/// type of the adapted digraph. |
| 3331 |
template <typename |
|
| 3334 |
template <typename DGR> |
|
| 3332 | 3335 |
#ifdef DOXYGEN |
| 3333 | 3336 |
class SplitNodes {
|
| 3334 | 3337 |
#else |
| 3335 | 3338 |
class SplitNodes |
| 3336 |
: public DigraphAdaptorExtender<SplitNodesBase<const |
|
| 3339 |
: public DigraphAdaptorExtender<SplitNodesBase<const DGR> > {
|
|
| 3337 | 3340 |
#endif |
| 3341 |
typedef DigraphAdaptorExtender<SplitNodesBase<const DGR> > Parent; |
|
| 3342 |
|
|
| 3338 | 3343 |
public: |
| 3339 |
typedef GR Digraph; |
|
| 3340 |
typedef DigraphAdaptorExtender<SplitNodesBase<const GR> > Parent; |
|
| 3341 |
|
|
| 3342 |
typedef typename Digraph::Node DigraphNode; |
|
| 3343 |
typedef |
|
| 3344 |
typedef DGR Digraph; |
|
| 3345 |
|
|
| 3346 |
typedef typename DGR::Node DigraphNode; |
|
| 3347 |
typedef typename DGR::Arc DigraphArc; |
|
| 3344 | 3348 |
|
| 3345 | 3349 |
typedef typename Parent::Node Node; |
| 3346 | 3350 |
typedef typename Parent::Arc Arc; |
| 3347 | 3351 |
|
| 3348 | 3352 |
/// \brief Constructor |
| 3349 | 3353 |
/// |
| 3350 | 3354 |
/// Constructor of the adaptor. |
| 3351 |
SplitNodes(const Digraph& g) {
|
|
| 3352 |
Parent::setDigraph(g); |
|
| 3355 |
SplitNodes(const DGR& g) {
|
|
| 3356 |
Parent::initialize(g); |
|
| 3353 | 3357 |
} |
| 3354 | 3358 |
|
| 3355 | 3359 |
/// \brief Returns \c true if the given node is an in-node. |
| 3356 | 3360 |
/// |
| 3357 | 3361 |
/// Returns \c true if the given node is an in-node. |
| 3358 | 3362 |
static bool inNode(const Node& n) {
|
| 3359 | 3363 |
return Parent::inNode(n); |
| 3360 | 3364 |
} |
| 3361 | 3365 |
|
| 3362 | 3366 |
/// \brief Returns \c true if the given node is an out-node. |
| 3363 | 3367 |
/// |
| 3364 | 3368 |
/// Returns \c true if the given node is an out-node. |
| 3365 | 3369 |
static bool outNode(const Node& n) {
|
| 3366 | 3370 |
return Parent::outNode(n); |
| 3367 | 3371 |
} |
| 3368 | 3372 |
|
| 3369 | 3373 |
/// \brief Returns \c true if the given arc is an original arc. |
| 3370 | 3374 |
/// |
| 3371 | 3375 |
/// Returns \c true if the given arc is one of the arcs in the |
| 3372 | 3376 |
/// original digraph. |
| 3373 | 3377 |
static bool origArc(const Arc& a) {
|
| 3374 | 3378 |
return Parent::origArc(a); |
| 3375 | 3379 |
} |
| 3376 | 3380 |
|
| 3377 | 3381 |
/// \brief Returns \c true if the given arc is a bind arc. |
| 3378 | 3382 |
/// |
| 3379 | 3383 |
/// Returns \c true if the given arc is a bind arc, i.e. it connects |
| 3380 | 3384 |
/// an in-node and an out-node. |
| 3381 | 3385 |
static bool bindArc(const Arc& a) {
|
| 3382 | 3386 |
return Parent::bindArc(a); |
| 3383 | 3387 |
} |
| 3384 | 3388 |
|
| 3385 | 3389 |
/// \brief Returns the in-node created from the given original node. |
| 3386 | 3390 |
/// |
| 3387 | 3391 |
/// Returns the in-node created from the given original node. |
| 3388 | 3392 |
static Node inNode(const DigraphNode& n) {
|
| 3389 | 3393 |
return Parent::inNode(n); |
| 3390 | 3394 |
} |
| 3391 | 3395 |
|
| 3392 | 3396 |
/// \brief Returns the out-node created from the given original node. |
| 3393 | 3397 |
/// |
| 3394 | 3398 |
/// Returns the out-node created from the given original node. |
| 3395 | 3399 |
static Node outNode(const DigraphNode& n) {
|
| 3396 | 3400 |
return Parent::outNode(n); |
| 3397 | 3401 |
} |
| 3398 | 3402 |
|
| 3399 | 3403 |
/// \brief Returns the bind arc that corresponds to the given |
| 3400 | 3404 |
/// original node. |
| 3401 | 3405 |
/// |
| 3402 | 3406 |
/// Returns the bind arc in the adaptor that corresponds to the given |
| 3403 | 3407 |
/// original node, i.e. the arc connecting the in-node and out-node |
| 3404 | 3408 |
/// of \c n. |
| 3405 | 3409 |
static Arc arc(const DigraphNode& n) {
|
| 3406 | 3410 |
return Parent::arc(n); |
| 3407 | 3411 |
} |
| 3408 | 3412 |
|
| 3409 | 3413 |
/// \brief Returns the arc that corresponds to the given original arc. |
| 3410 | 3414 |
/// |
| 3411 | 3415 |
/// Returns the arc in the adaptor that corresponds to the given |
| 3412 | 3416 |
/// original arc. |
| 3413 | 3417 |
static Arc arc(const DigraphArc& a) {
|
| 3414 | 3418 |
return Parent::arc(a); |
| 3415 | 3419 |
} |
| 3416 | 3420 |
|
| 3417 | 3421 |
/// \brief Node map combined from two original node maps |
| 3418 | 3422 |
/// |
| 3419 | 3423 |
/// This map adaptor class adapts two node maps of the original digraph |
| 3420 | 3424 |
/// to get a node map of the split digraph. |
| 3421 |
/// Its value type is inherited from the first node map type |
|
| 3422 |
/// (\c InNodeMap). |
|
| 3423 |
|
|
| 3425 |
/// Its value type is inherited from the first node map type (\c IN). |
|
| 3426 |
/// \tparam IN The type of the node map for the in-nodes. |
|
| 3427 |
/// \tparam OUT The type of the node map for the out-nodes. |
|
| 3428 |
template <typename IN, typename OUT> |
|
| 3424 | 3429 |
class CombinedNodeMap {
|
| 3425 | 3430 |
public: |
| 3426 | 3431 |
|
| 3427 | 3432 |
/// The key type of the map |
| 3428 | 3433 |
typedef Node Key; |
| 3429 | 3434 |
/// The value type of the map |
| 3430 |
typedef typename InNodeMap::Value Value; |
|
| 3431 |
|
|
| 3432 |
typedef typename MapTraits<InNodeMap>::ReferenceMapTag ReferenceMapTag; |
|
| 3433 |
typedef typename MapTraits<InNodeMap>::ReturnValue ReturnValue; |
|
| 3434 |
typedef typename MapTraits<InNodeMap>::ConstReturnValue ConstReturnValue; |
|
| 3435 |
typedef typename MapTraits<InNodeMap>::ReturnValue Reference; |
|
| 3436 |
typedef typename |
|
| 3435 |
typedef typename IN::Value Value; |
|
| 3436 |
|
|
| 3437 |
typedef typename MapTraits<IN>::ReferenceMapTag ReferenceMapTag; |
|
| 3438 |
typedef typename MapTraits<IN>::ReturnValue ReturnValue; |
|
| 3439 |
typedef typename MapTraits<IN>::ConstReturnValue ConstReturnValue; |
|
| 3440 |
typedef typename MapTraits<IN>::ReturnValue Reference; |
|
| 3441 |
typedef typename MapTraits<IN>::ConstReturnValue ConstReference; |
|
| 3437 | 3442 |
|
| 3438 | 3443 |
/// Constructor |
| 3439 |
CombinedNodeMap( |
|
| 3444 |
CombinedNodeMap(IN& in_map, OUT& out_map) |
|
| 3440 | 3445 |
: _in_map(in_map), _out_map(out_map) {}
|
| 3441 | 3446 |
|
| 3442 | 3447 |
/// Returns the value associated with the given key. |
| 3443 | 3448 |
Value operator[](const Key& key) const {
|
| 3444 |
if ( |
|
| 3449 |
if (SplitNodesBase<const DGR>::inNode(key)) {
|
|
| 3445 | 3450 |
return _in_map[key]; |
| 3446 | 3451 |
} else {
|
| 3447 | 3452 |
return _out_map[key]; |
| 3448 | 3453 |
} |
| 3449 | 3454 |
} |
| 3450 | 3455 |
|
| 3451 | 3456 |
/// Returns a reference to the value associated with the given key. |
| 3452 | 3457 |
Value& operator[](const Key& key) {
|
| 3453 |
if ( |
|
| 3458 |
if (SplitNodesBase<const DGR>::inNode(key)) {
|
|
| 3454 | 3459 |
return _in_map[key]; |
| 3455 | 3460 |
} else {
|
| 3456 | 3461 |
return _out_map[key]; |
| 3457 | 3462 |
} |
| 3458 | 3463 |
} |
| 3459 | 3464 |
|
| 3460 | 3465 |
/// Sets the value associated with the given key. |
| 3461 | 3466 |
void set(const Key& key, const Value& value) {
|
| 3462 |
if ( |
|
| 3467 |
if (SplitNodesBase<const DGR>::inNode(key)) {
|
|
| 3463 | 3468 |
_in_map.set(key, value); |
| 3464 | 3469 |
} else {
|
| 3465 | 3470 |
_out_map.set(key, value); |
| 3466 | 3471 |
} |
| 3467 | 3472 |
} |
| 3468 | 3473 |
|
| 3469 | 3474 |
private: |
| 3470 | 3475 |
|
| 3471 |
InNodeMap& _in_map; |
|
| 3472 |
OutNodeMap& _out_map; |
|
| 3476 |
IN& _in_map; |
|
| 3477 |
OUT& _out_map; |
|
| 3473 | 3478 |
|
| 3474 | 3479 |
}; |
| 3475 | 3480 |
|
| 3476 | 3481 |
|
| 3477 | 3482 |
/// \brief Returns a combined node map |
| 3478 | 3483 |
/// |
| 3479 | 3484 |
/// This function just returns a combined node map. |
| 3480 |
template <typename InNodeMap, typename OutNodeMap> |
|
| 3481 |
static CombinedNodeMap<InNodeMap, OutNodeMap> |
|
| 3482 |
combinedNodeMap(InNodeMap& in_map, OutNodeMap& out_map) {
|
|
| 3483 |
return CombinedNodeMap<InNodeMap, OutNodeMap>(in_map, out_map); |
|
| 3485 |
template <typename IN, typename OUT> |
|
| 3486 |
static CombinedNodeMap<IN, OUT> |
|
| 3487 |
combinedNodeMap(IN& in_map, OUT& out_map) {
|
|
| 3488 |
return CombinedNodeMap<IN, OUT>(in_map, out_map); |
|
| 3484 | 3489 |
} |
| 3485 | 3490 |
|
| 3486 |
template <typename InNodeMap, typename OutNodeMap> |
|
| 3487 |
static CombinedNodeMap<const InNodeMap, OutNodeMap> |
|
| 3488 |
combinedNodeMap(const InNodeMap& in_map, OutNodeMap& out_map) {
|
|
| 3489 |
return CombinedNodeMap<const InNodeMap, OutNodeMap>(in_map, out_map); |
|
| 3491 |
template <typename IN, typename OUT> |
|
| 3492 |
static CombinedNodeMap<const IN, OUT> |
|
| 3493 |
combinedNodeMap(const IN& in_map, OUT& out_map) {
|
|
| 3494 |
return CombinedNodeMap<const IN, OUT>(in_map, out_map); |
|
| 3490 | 3495 |
} |
| 3491 | 3496 |
|
| 3492 |
template <typename InNodeMap, typename OutNodeMap> |
|
| 3493 |
static CombinedNodeMap<InNodeMap, const OutNodeMap> |
|
| 3494 |
combinedNodeMap(InNodeMap& in_map, const OutNodeMap& out_map) {
|
|
| 3495 |
return CombinedNodeMap<InNodeMap, const OutNodeMap>(in_map, out_map); |
|
| 3497 |
template <typename IN, typename OUT> |
|
| 3498 |
static CombinedNodeMap<IN, const OUT> |
|
| 3499 |
combinedNodeMap(IN& in_map, const OUT& out_map) {
|
|
| 3500 |
return CombinedNodeMap<IN, const OUT>(in_map, out_map); |
|
| 3496 | 3501 |
} |
| 3497 | 3502 |
|
| 3498 |
template <typename InNodeMap, typename OutNodeMap> |
|
| 3499 |
static CombinedNodeMap<const InNodeMap, const OutNodeMap> |
|
| 3500 |
combinedNodeMap(const InNodeMap& in_map, const OutNodeMap& out_map) {
|
|
| 3501 |
return CombinedNodeMap<const InNodeMap, |
|
| 3502 |
|
|
| 3503 |
template <typename IN, typename OUT> |
|
| 3504 |
static CombinedNodeMap<const IN, const OUT> |
|
| 3505 |
combinedNodeMap(const IN& in_map, const OUT& out_map) {
|
|
| 3506 |
return CombinedNodeMap<const IN, const OUT>(in_map, out_map); |
|
| 3503 | 3507 |
} |
| 3504 | 3508 |
|
| 3505 | 3509 |
/// \brief Arc map combined from an arc map and a node map of the |
| 3506 | 3510 |
/// original digraph. |
| 3507 | 3511 |
/// |
| 3508 | 3512 |
/// This map adaptor class adapts an arc map and a node map of the |
| 3509 | 3513 |
/// original digraph to get an arc map of the split digraph. |
| 3510 |
/// Its value type is inherited from the original arc map type |
|
| 3511 |
/// (\c ArcMap). |
|
| 3512 |
|
|
| 3514 |
/// Its value type is inherited from the original arc map type (\c AM). |
|
| 3515 |
/// \tparam AM The type of the arc map. |
|
| 3516 |
/// \tparam NM the type of the node map. |
|
| 3517 |
template <typename AM, typename NM> |
|
| 3513 | 3518 |
class CombinedArcMap {
|
| 3514 | 3519 |
public: |
| 3515 | 3520 |
|
| 3516 | 3521 |
/// The key type of the map |
| 3517 | 3522 |
typedef Arc Key; |
| 3518 | 3523 |
/// The value type of the map |
| 3519 |
typedef typename ArcMap::Value Value; |
|
| 3520 |
|
|
| 3521 |
typedef typename MapTraits<ArcMap>::ReferenceMapTag ReferenceMapTag; |
|
| 3522 |
typedef typename MapTraits<ArcMap>::ReturnValue ReturnValue; |
|
| 3523 |
typedef typename MapTraits<ArcMap>::ConstReturnValue ConstReturnValue; |
|
| 3524 |
typedef typename MapTraits<ArcMap>::ReturnValue Reference; |
|
| 3525 |
typedef typename |
|
| 3524 |
typedef typename AM::Value Value; |
|
| 3525 |
|
|
| 3526 |
typedef typename MapTraits<AM>::ReferenceMapTag ReferenceMapTag; |
|
| 3527 |
typedef typename MapTraits<AM>::ReturnValue ReturnValue; |
|
| 3528 |
typedef typename MapTraits<AM>::ConstReturnValue ConstReturnValue; |
|
| 3529 |
typedef typename MapTraits<AM>::ReturnValue Reference; |
|
| 3530 |
typedef typename MapTraits<AM>::ConstReturnValue ConstReference; |
|
| 3526 | 3531 |
|
| 3527 | 3532 |
/// Constructor |
| 3528 |
CombinedArcMap( |
|
| 3533 |
CombinedArcMap(AM& arc_map, NM& node_map) |
|
| 3529 | 3534 |
: _arc_map(arc_map), _node_map(node_map) {}
|
| 3530 | 3535 |
|
| 3531 | 3536 |
/// Returns the value associated with the given key. |
| 3532 | 3537 |
Value operator[](const Key& arc) const {
|
| 3533 |
if ( |
|
| 3538 |
if (SplitNodesBase<const DGR>::origArc(arc)) {
|
|
| 3534 | 3539 |
return _arc_map[arc]; |
| 3535 | 3540 |
} else {
|
| 3536 | 3541 |
return _node_map[arc]; |
| 3537 | 3542 |
} |
| 3538 | 3543 |
} |
| 3539 | 3544 |
|
| 3540 | 3545 |
/// Returns a reference to the value associated with the given key. |
| 3541 | 3546 |
Value& operator[](const Key& arc) {
|
| 3542 |
if ( |
|
| 3547 |
if (SplitNodesBase<const DGR>::origArc(arc)) {
|
|
| 3543 | 3548 |
return _arc_map[arc]; |
| 3544 | 3549 |
} else {
|
| 3545 | 3550 |
return _node_map[arc]; |
| 3546 | 3551 |
} |
| 3547 | 3552 |
} |
| 3548 | 3553 |
|
| 3549 | 3554 |
/// Sets the value associated with the given key. |
| 3550 | 3555 |
void set(const Arc& arc, const Value& val) {
|
| 3551 |
if ( |
|
| 3556 |
if (SplitNodesBase<const DGR>::origArc(arc)) {
|
|
| 3552 | 3557 |
_arc_map.set(arc, val); |
| 3553 | 3558 |
} else {
|
| 3554 | 3559 |
_node_map.set(arc, val); |
| 3555 | 3560 |
} |
| 3556 | 3561 |
} |
| 3557 | 3562 |
|
| 3558 | 3563 |
private: |
| 3559 |
ArcMap& _arc_map; |
|
| 3560 |
NodeMap& _node_map; |
|
| 3564 |
|
|
| 3565 |
AM& _arc_map; |
|
| 3566 |
NM& _node_map; |
|
| 3567 |
|
|
| 3561 | 3568 |
}; |
| 3562 | 3569 |
|
| 3563 | 3570 |
/// \brief Returns a combined arc map |
| 3564 | 3571 |
/// |
| 3565 | 3572 |
/// This function just returns a combined arc map. |
| 3566 | 3573 |
template <typename ArcMap, typename NodeMap> |
| 3567 | 3574 |
static CombinedArcMap<ArcMap, NodeMap> |
| 3568 | 3575 |
combinedArcMap(ArcMap& arc_map, NodeMap& node_map) {
|
| 3569 | 3576 |
return CombinedArcMap<ArcMap, NodeMap>(arc_map, node_map); |
| 3570 | 3577 |
} |
| 3571 | 3578 |
|
| 3572 | 3579 |
template <typename ArcMap, typename NodeMap> |
| 3573 | 3580 |
static CombinedArcMap<const ArcMap, NodeMap> |
| 3574 | 3581 |
combinedArcMap(const ArcMap& arc_map, NodeMap& node_map) {
|
| 3575 | 3582 |
return CombinedArcMap<const ArcMap, NodeMap>(arc_map, node_map); |
| 3576 | 3583 |
} |
| 3577 | 3584 |
|
| 3578 | 3585 |
template <typename ArcMap, typename NodeMap> |
| 3579 | 3586 |
static CombinedArcMap<ArcMap, const NodeMap> |
| 3580 | 3587 |
combinedArcMap(ArcMap& arc_map, const NodeMap& node_map) {
|
| 3581 | 3588 |
return CombinedArcMap<ArcMap, const NodeMap>(arc_map, node_map); |
| 3582 | 3589 |
} |
| 3583 | 3590 |
|
| 3584 | 3591 |
template <typename ArcMap, typename NodeMap> |
| 3585 | 3592 |
static CombinedArcMap<const ArcMap, const NodeMap> |
| 3586 | 3593 |
combinedArcMap(const ArcMap& arc_map, const NodeMap& node_map) {
|
| 3587 | 3594 |
return CombinedArcMap<const ArcMap, const NodeMap>(arc_map, node_map); |
| 3588 | 3595 |
} |
| 3589 | 3596 |
|
| 3590 | 3597 |
}; |
| 3591 | 3598 |
|
| 3592 | 3599 |
/// \brief Returns a (read-only) SplitNodes adaptor |
| 3593 | 3600 |
/// |
| 3594 | 3601 |
/// This function just returns a (read-only) \ref SplitNodes adaptor. |
| 3595 | 3602 |
/// \ingroup graph_adaptors |
| 3596 | 3603 |
/// \relates SplitNodes |
| 3597 |
template<typename GR> |
|
| 3598 |
SplitNodes<GR> |
|
| 3599 |
splitNodes(const GR& digraph) {
|
|
| 3600 |
return SplitNodes<GR>(digraph); |
|
| 3604 |
template<typename DGR> |
|
| 3605 |
SplitNodes<DGR> |
|
| 3606 |
splitNodes(const DGR& digraph) {
|
|
| 3607 |
return SplitNodes<DGR>(digraph); |
|
| 3601 | 3608 |
} |
| 3602 | 3609 |
|
| 3610 |
#undef LEMON_SCOPE_FIX |
|
| 3611 |
|
|
| 3603 | 3612 |
} //namespace lemon |
| 3604 | 3613 |
|
| 3605 | 3614 |
#endif //LEMON_ADAPTORS_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
///\file |
| 20 | 20 |
///\brief Some basic non-inline functions and static global data. |
| 21 | 21 |
|
| 22 | 22 |
#include<lemon/tolerance.h> |
| 23 | 23 |
#include<lemon/core.h> |
| 24 | 24 |
namespace lemon {
|
| 25 | 25 |
|
| 26 |
float Tolerance<float>::def_epsilon = 1e-4; |
|
| 26 |
float Tolerance<float>::def_epsilon = static_cast<float>(1e-4); |
|
| 27 | 27 |
double Tolerance<double>::def_epsilon = 1e-10; |
| 28 | 28 |
long double Tolerance<long double>::def_epsilon = 1e-14; |
| 29 | 29 |
|
| 30 | 30 |
#ifndef LEMON_ONLY_TEMPLATES |
| 31 | 31 |
const Invalid INVALID = Invalid(); |
| 32 | 32 |
#endif |
| 33 | 33 |
|
| 34 | 34 |
} //namespace lemon |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_BFS_H |
| 20 | 20 |
#define LEMON_BFS_H |
| 21 | 21 |
|
| 22 | 22 |
///\ingroup search |
| 23 | 23 |
///\file |
| 24 | 24 |
///\brief BFS algorithm. |
| 25 | 25 |
|
| 26 | 26 |
#include <lemon/list_graph.h> |
| 27 | 27 |
#include <lemon/bits/path_dump.h> |
| 28 | 28 |
#include <lemon/core.h> |
| 29 | 29 |
#include <lemon/error.h> |
| 30 | 30 |
#include <lemon/maps.h> |
| 31 | 31 |
#include <lemon/path.h> |
| 32 | 32 |
|
| 33 | 33 |
namespace lemon {
|
| 34 | 34 |
|
| 35 | 35 |
///Default traits class of Bfs class. |
| 36 | 36 |
|
| 37 | 37 |
///Default traits class of Bfs class. |
| 38 | 38 |
///\tparam GR Digraph type. |
| 39 | 39 |
template<class GR> |
| 40 | 40 |
struct BfsDefaultTraits |
| 41 | 41 |
{
|
| 42 | 42 |
///The type of the digraph the algorithm runs on. |
| 43 | 43 |
typedef GR Digraph; |
| 44 | 44 |
|
| 45 | 45 |
///\brief The type of the map that stores the predecessor |
| 46 | 46 |
///arcs of the shortest paths. |
| 47 | 47 |
/// |
| 48 | 48 |
///The type of the map that stores the predecessor |
| 49 | 49 |
///arcs of the shortest paths. |
| 50 |
///It must |
|
| 50 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 51 | 51 |
typedef typename Digraph::template NodeMap<typename Digraph::Arc> PredMap; |
| 52 |
///Instantiates a PredMap. |
|
| 52 |
///Instantiates a \c PredMap. |
|
| 53 | 53 |
|
| 54 |
///This function instantiates a PredMap. |
|
| 54 |
///This function instantiates a \ref PredMap. |
|
| 55 | 55 |
///\param g is the digraph, to which we would like to define the |
| 56 |
///PredMap. |
|
| 56 |
///\ref PredMap. |
|
| 57 | 57 |
static PredMap *createPredMap(const Digraph &g) |
| 58 | 58 |
{
|
| 59 | 59 |
return new PredMap(g); |
| 60 | 60 |
} |
| 61 | 61 |
|
| 62 | 62 |
///The type of the map that indicates which nodes are processed. |
| 63 | 63 |
|
| 64 | 64 |
///The type of the map that indicates which nodes are processed. |
| 65 |
///It must |
|
| 65 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 66 |
///By default it is a NullMap. |
|
| 66 | 67 |
typedef NullMap<typename Digraph::Node,bool> ProcessedMap; |
| 67 |
///Instantiates a ProcessedMap. |
|
| 68 |
///Instantiates a \c ProcessedMap. |
|
| 68 | 69 |
|
| 69 |
///This function instantiates a ProcessedMap. |
|
| 70 |
///This function instantiates a \ref ProcessedMap. |
|
| 70 | 71 |
///\param g is the digraph, to which |
| 71 |
///we would like to define the ProcessedMap |
|
| 72 |
///we would like to define the \ref ProcessedMap |
|
| 72 | 73 |
#ifdef DOXYGEN |
| 73 | 74 |
static ProcessedMap *createProcessedMap(const Digraph &g) |
| 74 | 75 |
#else |
| 75 | 76 |
static ProcessedMap *createProcessedMap(const Digraph &) |
| 76 | 77 |
#endif |
| 77 | 78 |
{
|
| 78 | 79 |
return new ProcessedMap(); |
| 79 | 80 |
} |
| 80 | 81 |
|
| 81 | 82 |
///The type of the map that indicates which nodes are reached. |
| 82 | 83 |
|
| 83 | 84 |
///The type of the map that indicates which nodes are reached. |
| 84 |
///It must |
|
| 85 |
///It must conform to the \ref concepts::ReadWriteMap "ReadWriteMap" concept. |
|
| 85 | 86 |
typedef typename Digraph::template NodeMap<bool> ReachedMap; |
| 86 |
///Instantiates a ReachedMap. |
|
| 87 |
///Instantiates a \c ReachedMap. |
|
| 87 | 88 |
|
| 88 |
///This function instantiates a ReachedMap. |
|
| 89 |
///This function instantiates a \ref ReachedMap. |
|
| 89 | 90 |
///\param g is the digraph, to which |
| 90 |
///we would like to define the ReachedMap. |
|
| 91 |
///we would like to define the \ref ReachedMap. |
|
| 91 | 92 |
static ReachedMap *createReachedMap(const Digraph &g) |
| 92 | 93 |
{
|
| 93 | 94 |
return new ReachedMap(g); |
| 94 | 95 |
} |
| 95 | 96 |
|
| 96 | 97 |
///The type of the map that stores the distances of the nodes. |
| 97 | 98 |
|
| 98 | 99 |
///The type of the map that stores the distances of the nodes. |
| 99 |
///It must |
|
| 100 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 100 | 101 |
typedef typename Digraph::template NodeMap<int> DistMap; |
| 101 |
///Instantiates a DistMap. |
|
| 102 |
///Instantiates a \c DistMap. |
|
| 102 | 103 |
|
| 103 |
///This function instantiates a DistMap. |
|
| 104 |
///This function instantiates a \ref DistMap. |
|
| 104 | 105 |
///\param g is the digraph, to which we would like to define the |
| 105 |
///DistMap. |
|
| 106 |
///\ref DistMap. |
|
| 106 | 107 |
static DistMap *createDistMap(const Digraph &g) |
| 107 | 108 |
{
|
| 108 | 109 |
return new DistMap(g); |
| 109 | 110 |
} |
| 110 | 111 |
}; |
| 111 | 112 |
|
| 112 | 113 |
///%BFS algorithm class. |
| 113 | 114 |
|
| 114 | 115 |
///\ingroup search |
| 115 | 116 |
///This class provides an efficient implementation of the %BFS algorithm. |
| 116 | 117 |
/// |
| 117 | 118 |
///There is also a \ref bfs() "function-type interface" for the BFS |
| 118 | 119 |
///algorithm, which is convenient in the simplier cases and it can be |
| 119 | 120 |
///used easier. |
| 120 | 121 |
/// |
| 121 | 122 |
///\tparam GR The type of the digraph the algorithm runs on. |
| 122 | 123 |
///The default type is \ref ListDigraph. |
| 123 | 124 |
#ifdef DOXYGEN |
| 124 | 125 |
template <typename GR, |
| 125 | 126 |
typename TR> |
| 126 | 127 |
#else |
| 127 | 128 |
template <typename GR=ListDigraph, |
| 128 | 129 |
typename TR=BfsDefaultTraits<GR> > |
| 129 | 130 |
#endif |
| 130 | 131 |
class Bfs {
|
| 131 | 132 |
public: |
| 132 | 133 |
|
| 133 | 134 |
///The type of the digraph the algorithm runs on. |
| 134 | 135 |
typedef typename TR::Digraph Digraph; |
| 135 | 136 |
|
| 136 | 137 |
///\brief The type of the map that stores the predecessor arcs of the |
| 137 | 138 |
///shortest paths. |
| 138 | 139 |
typedef typename TR::PredMap PredMap; |
| 139 | 140 |
///The type of the map that stores the distances of the nodes. |
| 140 | 141 |
typedef typename TR::DistMap DistMap; |
| 141 | 142 |
///The type of the map that indicates which nodes are reached. |
| 142 | 143 |
typedef typename TR::ReachedMap ReachedMap; |
| 143 | 144 |
///The type of the map that indicates which nodes are processed. |
| 144 | 145 |
typedef typename TR::ProcessedMap ProcessedMap; |
| 145 | 146 |
///The type of the paths. |
| 146 | 147 |
typedef PredMapPath<Digraph, PredMap> Path; |
| 147 | 148 |
|
| 148 | 149 |
///The \ref BfsDefaultTraits "traits class" of the algorithm. |
| 149 | 150 |
typedef TR Traits; |
| 150 | 151 |
|
| 151 | 152 |
private: |
| 152 | 153 |
|
| 153 | 154 |
typedef typename Digraph::Node Node; |
| 154 | 155 |
typedef typename Digraph::NodeIt NodeIt; |
| 155 | 156 |
typedef typename Digraph::Arc Arc; |
| 156 | 157 |
typedef typename Digraph::OutArcIt OutArcIt; |
| 157 | 158 |
|
| 158 | 159 |
//Pointer to the underlying digraph. |
| 159 | 160 |
const Digraph *G; |
| 160 | 161 |
//Pointer to the map of predecessor arcs. |
| 161 | 162 |
PredMap *_pred; |
| 162 | 163 |
//Indicates if _pred is locally allocated (true) or not. |
| 163 | 164 |
bool local_pred; |
| 164 | 165 |
//Pointer to the map of distances. |
| 165 | 166 |
DistMap *_dist; |
| 166 | 167 |
//Indicates if _dist is locally allocated (true) or not. |
| 167 | 168 |
bool local_dist; |
| 168 | 169 |
//Pointer to the map of reached status of the nodes. |
| 169 | 170 |
ReachedMap *_reached; |
| 170 | 171 |
//Indicates if _reached is locally allocated (true) or not. |
| 171 | 172 |
bool local_reached; |
| 172 | 173 |
//Pointer to the map of processed status of the nodes. |
| 173 | 174 |
ProcessedMap *_processed; |
| 174 | 175 |
//Indicates if _processed is locally allocated (true) or not. |
| 175 | 176 |
bool local_processed; |
| 176 | 177 |
|
| 177 | 178 |
std::vector<typename Digraph::Node> _queue; |
| 178 | 179 |
int _queue_head,_queue_tail,_queue_next_dist; |
| 179 | 180 |
int _curr_dist; |
| 180 | 181 |
|
| 181 | 182 |
//Creates the maps if necessary. |
| 182 | 183 |
void create_maps() |
| 183 | 184 |
{
|
| 184 | 185 |
if(!_pred) {
|
| 185 | 186 |
local_pred = true; |
| 186 | 187 |
_pred = Traits::createPredMap(*G); |
| 187 | 188 |
} |
| 188 | 189 |
if(!_dist) {
|
| 189 | 190 |
local_dist = true; |
| 190 | 191 |
_dist = Traits::createDistMap(*G); |
| 191 | 192 |
} |
| 192 | 193 |
if(!_reached) {
|
| 193 | 194 |
local_reached = true; |
| 194 | 195 |
_reached = Traits::createReachedMap(*G); |
| 195 | 196 |
} |
| 196 | 197 |
if(!_processed) {
|
| 197 | 198 |
local_processed = true; |
| 198 | 199 |
_processed = Traits::createProcessedMap(*G); |
| 199 | 200 |
} |
| 200 | 201 |
} |
| 201 | 202 |
|
| 202 | 203 |
protected: |
| 203 | 204 |
|
| 204 | 205 |
Bfs() {}
|
| 205 | 206 |
|
| 206 | 207 |
public: |
| 207 | 208 |
|
| 208 | 209 |
typedef Bfs Create; |
| 209 | 210 |
|
| 210 | 211 |
///\name Named Template Parameters |
| 211 | 212 |
|
| 212 | 213 |
///@{
|
| 213 | 214 |
|
| 214 | 215 |
template <class T> |
| 215 | 216 |
struct SetPredMapTraits : public Traits {
|
| 216 | 217 |
typedef T PredMap; |
| 217 | 218 |
static PredMap *createPredMap(const Digraph &) |
| 218 | 219 |
{
|
| 219 | 220 |
LEMON_ASSERT(false, "PredMap is not initialized"); |
| 220 | 221 |
return 0; // ignore warnings |
| 221 | 222 |
} |
| 222 | 223 |
}; |
| 223 | 224 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 224 |
///PredMap type. |
|
| 225 |
///\c PredMap type. |
|
| 225 | 226 |
/// |
| 226 | 227 |
///\ref named-templ-param "Named parameter" for setting |
| 227 |
///PredMap type. |
|
| 228 |
///It must meet the \ref concepts::WriteMap "WriteMap" concept. |
|
| 228 |
///\c PredMap type. |
|
| 229 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 229 | 230 |
template <class T> |
| 230 | 231 |
struct SetPredMap : public Bfs< Digraph, SetPredMapTraits<T> > {
|
| 231 | 232 |
typedef Bfs< Digraph, SetPredMapTraits<T> > Create; |
| 232 | 233 |
}; |
| 233 | 234 |
|
| 234 | 235 |
template <class T> |
| 235 | 236 |
struct SetDistMapTraits : public Traits {
|
| 236 | 237 |
typedef T DistMap; |
| 237 | 238 |
static DistMap *createDistMap(const Digraph &) |
| 238 | 239 |
{
|
| 239 | 240 |
LEMON_ASSERT(false, "DistMap is not initialized"); |
| 240 | 241 |
return 0; // ignore warnings |
| 241 | 242 |
} |
| 242 | 243 |
}; |
| 243 | 244 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 244 |
///DistMap type. |
|
| 245 |
///\c DistMap type. |
|
| 245 | 246 |
/// |
| 246 | 247 |
///\ref named-templ-param "Named parameter" for setting |
| 247 |
///DistMap type. |
|
| 248 |
///It must meet the \ref concepts::WriteMap "WriteMap" concept. |
|
| 248 |
///\c DistMap type. |
|
| 249 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 249 | 250 |
template <class T> |
| 250 | 251 |
struct SetDistMap : public Bfs< Digraph, SetDistMapTraits<T> > {
|
| 251 | 252 |
typedef Bfs< Digraph, SetDistMapTraits<T> > Create; |
| 252 | 253 |
}; |
| 253 | 254 |
|
| 254 | 255 |
template <class T> |
| 255 | 256 |
struct SetReachedMapTraits : public Traits {
|
| 256 | 257 |
typedef T ReachedMap; |
| 257 | 258 |
static ReachedMap *createReachedMap(const Digraph &) |
| 258 | 259 |
{
|
| 259 | 260 |
LEMON_ASSERT(false, "ReachedMap is not initialized"); |
| 260 | 261 |
return 0; // ignore warnings |
| 261 | 262 |
} |
| 262 | 263 |
}; |
| 263 | 264 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 264 |
///ReachedMap type. |
|
| 265 |
///\c ReachedMap type. |
|
| 265 | 266 |
/// |
| 266 | 267 |
///\ref named-templ-param "Named parameter" for setting |
| 267 |
///ReachedMap type. |
|
| 268 |
///It must meet the \ref concepts::ReadWriteMap "ReadWriteMap" concept. |
|
| 268 |
///\c ReachedMap type. |
|
| 269 |
///It must conform to the \ref concepts::ReadWriteMap "ReadWriteMap" concept. |
|
| 269 | 270 |
template <class T> |
| 270 | 271 |
struct SetReachedMap : public Bfs< Digraph, SetReachedMapTraits<T> > {
|
| 271 | 272 |
typedef Bfs< Digraph, SetReachedMapTraits<T> > Create; |
| 272 | 273 |
}; |
| 273 | 274 |
|
| 274 | 275 |
template <class T> |
| 275 | 276 |
struct SetProcessedMapTraits : public Traits {
|
| 276 | 277 |
typedef T ProcessedMap; |
| 277 | 278 |
static ProcessedMap *createProcessedMap(const Digraph &) |
| 278 | 279 |
{
|
| 279 | 280 |
LEMON_ASSERT(false, "ProcessedMap is not initialized"); |
| 280 | 281 |
return 0; // ignore warnings |
| 281 | 282 |
} |
| 282 | 283 |
}; |
| 283 | 284 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 284 |
///ProcessedMap type. |
|
| 285 |
///\c ProcessedMap type. |
|
| 285 | 286 |
/// |
| 286 | 287 |
///\ref named-templ-param "Named parameter" for setting |
| 287 |
///ProcessedMap type. |
|
| 288 |
///It must meet the \ref concepts::WriteMap "WriteMap" concept. |
|
| 288 |
///\c ProcessedMap type. |
|
| 289 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 289 | 290 |
template <class T> |
| 290 | 291 |
struct SetProcessedMap : public Bfs< Digraph, SetProcessedMapTraits<T> > {
|
| 291 | 292 |
typedef Bfs< Digraph, SetProcessedMapTraits<T> > Create; |
| 292 | 293 |
}; |
| 293 | 294 |
|
| 294 | 295 |
struct SetStandardProcessedMapTraits : public Traits {
|
| 295 | 296 |
typedef typename Digraph::template NodeMap<bool> ProcessedMap; |
| 296 | 297 |
static ProcessedMap *createProcessedMap(const Digraph &g) |
| 297 | 298 |
{
|
| 298 | 299 |
return new ProcessedMap(g); |
| 299 | 300 |
return 0; // ignore warnings |
| 300 | 301 |
} |
| 301 | 302 |
}; |
| 302 | 303 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 303 |
///ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>. |
|
| 304 |
///\c ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>. |
|
| 304 | 305 |
/// |
| 305 | 306 |
///\ref named-templ-param "Named parameter" for setting |
| 306 |
///ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>. |
|
| 307 |
///\c ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>. |
|
| 307 | 308 |
///If you don't set it explicitly, it will be automatically allocated. |
| 308 | 309 |
struct SetStandardProcessedMap : |
| 309 | 310 |
public Bfs< Digraph, SetStandardProcessedMapTraits > {
|
| 310 | 311 |
typedef Bfs< Digraph, SetStandardProcessedMapTraits > Create; |
| 311 | 312 |
}; |
| 312 | 313 |
|
| 313 | 314 |
///@} |
| 314 | 315 |
|
| 315 | 316 |
public: |
| 316 | 317 |
|
| 317 | 318 |
///Constructor. |
| 318 | 319 |
|
| 319 | 320 |
///Constructor. |
| 320 | 321 |
///\param g The digraph the algorithm runs on. |
| 321 | 322 |
Bfs(const Digraph &g) : |
| 322 | 323 |
G(&g), |
| 323 | 324 |
_pred(NULL), local_pred(false), |
| 324 | 325 |
_dist(NULL), local_dist(false), |
| 325 | 326 |
_reached(NULL), local_reached(false), |
| 326 | 327 |
_processed(NULL), local_processed(false) |
| 327 | 328 |
{ }
|
| 328 | 329 |
|
| 329 | 330 |
///Destructor. |
| 330 | 331 |
~Bfs() |
| 331 | 332 |
{
|
| 332 | 333 |
if(local_pred) delete _pred; |
| 333 | 334 |
if(local_dist) delete _dist; |
| 334 | 335 |
if(local_reached) delete _reached; |
| 335 | 336 |
if(local_processed) delete _processed; |
| 336 | 337 |
} |
| 337 | 338 |
|
| 338 | 339 |
///Sets the map that stores the predecessor arcs. |
| 339 | 340 |
|
| 340 | 341 |
///Sets the map that stores the predecessor arcs. |
| 341 | 342 |
///If you don't use this function before calling \ref run(Node) "run()" |
| 342 | 343 |
///or \ref init(), an instance will be allocated automatically. |
| 343 | 344 |
///The destructor deallocates this automatically allocated map, |
| 344 | 345 |
///of course. |
| 345 | 346 |
///\return <tt> (*this) </tt> |
| 346 | 347 |
Bfs &predMap(PredMap &m) |
| 347 | 348 |
{
|
| 348 | 349 |
if(local_pred) {
|
| 349 | 350 |
delete _pred; |
| 350 | 351 |
local_pred=false; |
| 351 | 352 |
} |
| 352 | 353 |
_pred = &m; |
| 353 | 354 |
return *this; |
| 354 | 355 |
} |
| 355 | 356 |
|
| 356 | 357 |
///Sets the map that indicates which nodes are reached. |
| 357 | 358 |
|
| 358 | 359 |
///Sets the map that indicates which nodes are reached. |
| 359 | 360 |
///If you don't use this function before calling \ref run(Node) "run()" |
| 360 | 361 |
///or \ref init(), an instance will be allocated automatically. |
| 361 | 362 |
///The destructor deallocates this automatically allocated map, |
| 362 | 363 |
///of course. |
| 363 | 364 |
///\return <tt> (*this) </tt> |
| 364 | 365 |
Bfs &reachedMap(ReachedMap &m) |
| 365 | 366 |
{
|
| 366 | 367 |
if(local_reached) {
|
| 367 | 368 |
delete _reached; |
| 368 | 369 |
local_reached=false; |
| 369 | 370 |
} |
| 370 | 371 |
_reached = &m; |
| 371 | 372 |
return *this; |
| 372 | 373 |
} |
| 373 | 374 |
|
| 374 | 375 |
///Sets the map that indicates which nodes are processed. |
| 375 | 376 |
|
| 376 | 377 |
///Sets the map that indicates which nodes are processed. |
| 377 | 378 |
///If you don't use this function before calling \ref run(Node) "run()" |
| 378 | 379 |
///or \ref init(), an instance will be allocated automatically. |
| 379 | 380 |
///The destructor deallocates this automatically allocated map, |
| 380 | 381 |
///of course. |
| 381 | 382 |
///\return <tt> (*this) </tt> |
| 382 | 383 |
Bfs &processedMap(ProcessedMap &m) |
| 383 | 384 |
{
|
| 384 | 385 |
if(local_processed) {
|
| 385 | 386 |
delete _processed; |
| 386 | 387 |
local_processed=false; |
| 387 | 388 |
} |
| 388 | 389 |
_processed = &m; |
| 389 | 390 |
return *this; |
| 390 | 391 |
} |
| 391 | 392 |
|
| 392 | 393 |
///Sets the map that stores the distances of the nodes. |
| 393 | 394 |
|
| 394 | 395 |
///Sets the map that stores the distances of the nodes calculated by |
| 395 | 396 |
///the algorithm. |
| 396 | 397 |
///If you don't use this function before calling \ref run(Node) "run()" |
| 397 | 398 |
///or \ref init(), an instance will be allocated automatically. |
| 398 | 399 |
///The destructor deallocates this automatically allocated map, |
| 399 | 400 |
///of course. |
| 400 | 401 |
///\return <tt> (*this) </tt> |
| 401 | 402 |
Bfs &distMap(DistMap &m) |
| 402 | 403 |
{
|
| 403 | 404 |
if(local_dist) {
|
| 404 | 405 |
delete _dist; |
| 405 | 406 |
local_dist=false; |
| 406 | 407 |
} |
| 407 | 408 |
_dist = &m; |
| 408 | 409 |
return *this; |
| 409 | 410 |
} |
| 410 | 411 |
|
| 411 | 412 |
public: |
| 412 | 413 |
|
| 413 | 414 |
///\name Execution Control |
| 414 | 415 |
///The simplest way to execute the BFS algorithm is to use one of the |
| 415 | 416 |
///member functions called \ref run(Node) "run()".\n |
| 416 |
///If you need more control on the execution, first you have to call |
|
| 417 |
///\ref init(), then you can add several source nodes with |
|
| 417 |
///If you need better control on the execution, you have to call |
|
| 418 |
///\ref init() first, then you can add several source nodes with |
|
| 418 | 419 |
///\ref addSource(). Finally the actual path computation can be |
| 419 | 420 |
///performed with one of the \ref start() functions. |
| 420 | 421 |
|
| 421 | 422 |
///@{
|
| 422 | 423 |
|
| 423 | 424 |
///\brief Initializes the internal data structures. |
| 424 | 425 |
/// |
| 425 | 426 |
///Initializes the internal data structures. |
| 426 | 427 |
void init() |
| 427 | 428 |
{
|
| 428 | 429 |
create_maps(); |
| 429 | 430 |
_queue.resize(countNodes(*G)); |
| 430 | 431 |
_queue_head=_queue_tail=0; |
| 431 | 432 |
_curr_dist=1; |
| 432 | 433 |
for ( NodeIt u(*G) ; u!=INVALID ; ++u ) {
|
| 433 | 434 |
_pred->set(u,INVALID); |
| 434 | 435 |
_reached->set(u,false); |
| 435 | 436 |
_processed->set(u,false); |
| 436 | 437 |
} |
| 437 | 438 |
} |
| 438 | 439 |
|
| 439 | 440 |
///Adds a new source node. |
| 440 | 441 |
|
| 441 | 442 |
///Adds a new source node to the set of nodes to be processed. |
| 442 | 443 |
/// |
| 443 | 444 |
void addSource(Node s) |
| 444 | 445 |
{
|
| 445 | 446 |
if(!(*_reached)[s]) |
| 446 | 447 |
{
|
| 447 | 448 |
_reached->set(s,true); |
| 448 | 449 |
_pred->set(s,INVALID); |
| 449 | 450 |
_dist->set(s,0); |
| 450 | 451 |
_queue[_queue_head++]=s; |
| 451 | 452 |
_queue_next_dist=_queue_head; |
| 452 | 453 |
} |
| 453 | 454 |
} |
| 454 | 455 |
|
| 455 | 456 |
///Processes the next node. |
| 456 | 457 |
|
| 457 | 458 |
///Processes the next node. |
| 458 | 459 |
/// |
| 459 | 460 |
///\return The processed node. |
| 460 | 461 |
/// |
| 461 | 462 |
///\pre The queue must not be empty. |
| 462 | 463 |
Node processNextNode() |
| 463 | 464 |
{
|
| 464 | 465 |
if(_queue_tail==_queue_next_dist) {
|
| 465 | 466 |
_curr_dist++; |
| 466 | 467 |
_queue_next_dist=_queue_head; |
| 467 | 468 |
} |
| 468 | 469 |
Node n=_queue[_queue_tail++]; |
| 469 | 470 |
_processed->set(n,true); |
| 470 | 471 |
Node m; |
| 471 | 472 |
for(OutArcIt e(*G,n);e!=INVALID;++e) |
| 472 | 473 |
if(!(*_reached)[m=G->target(e)]) {
|
| 473 | 474 |
_queue[_queue_head++]=m; |
| 474 | 475 |
_reached->set(m,true); |
| 475 | 476 |
_pred->set(m,e); |
| 476 | 477 |
_dist->set(m,_curr_dist); |
| 477 | 478 |
} |
| 478 | 479 |
return n; |
| 479 | 480 |
} |
| 480 | 481 |
|
| 481 | 482 |
///Processes the next node. |
| 482 | 483 |
|
| 483 | 484 |
///Processes the next node and checks if the given target node |
| 484 | 485 |
///is reached. If the target node is reachable from the processed |
| 485 | 486 |
///node, then the \c reach parameter will be set to \c true. |
| 486 | 487 |
/// |
| 487 | 488 |
///\param target The target node. |
| 488 | 489 |
///\retval reach Indicates if the target node is reached. |
| 489 | 490 |
///It should be initially \c false. |
| 490 | 491 |
/// |
| 491 | 492 |
///\return The processed node. |
| 492 | 493 |
/// |
| 493 | 494 |
///\pre The queue must not be empty. |
| 494 | 495 |
Node processNextNode(Node target, bool& reach) |
| 495 | 496 |
{
|
| 496 | 497 |
if(_queue_tail==_queue_next_dist) {
|
| 497 | 498 |
_curr_dist++; |
| 498 | 499 |
_queue_next_dist=_queue_head; |
| 499 | 500 |
} |
| 500 | 501 |
Node n=_queue[_queue_tail++]; |
| 501 | 502 |
_processed->set(n,true); |
| 502 | 503 |
Node m; |
| 503 | 504 |
for(OutArcIt e(*G,n);e!=INVALID;++e) |
| 504 | 505 |
if(!(*_reached)[m=G->target(e)]) {
|
| 505 | 506 |
_queue[_queue_head++]=m; |
| 506 | 507 |
_reached->set(m,true); |
| 507 | 508 |
_pred->set(m,e); |
| 508 | 509 |
_dist->set(m,_curr_dist); |
| 509 | 510 |
reach = reach || (target == m); |
| 510 | 511 |
} |
| 511 | 512 |
return n; |
| 512 | 513 |
} |
| 513 | 514 |
|
| 514 | 515 |
///Processes the next node. |
| 515 | 516 |
|
| 516 | 517 |
///Processes the next node and checks if at least one of reached |
| 517 | 518 |
///nodes has \c true value in the \c nm node map. If one node |
| 518 | 519 |
///with \c true value is reachable from the processed node, then the |
| 519 | 520 |
///\c rnode parameter will be set to the first of such nodes. |
| 520 | 521 |
/// |
| 521 | 522 |
///\param nm A \c bool (or convertible) node map that indicates the |
| 522 | 523 |
///possible targets. |
| 523 | 524 |
///\retval rnode The reached target node. |
| 524 | 525 |
///It should be initially \c INVALID. |
| 525 | 526 |
/// |
| 526 | 527 |
///\return The processed node. |
| 527 | 528 |
/// |
| 528 | 529 |
///\pre The queue must not be empty. |
| 529 | 530 |
template<class NM> |
| 530 | 531 |
Node processNextNode(const NM& nm, Node& rnode) |
| 531 | 532 |
{
|
| 532 | 533 |
if(_queue_tail==_queue_next_dist) {
|
| 533 | 534 |
_curr_dist++; |
| 534 | 535 |
_queue_next_dist=_queue_head; |
| 535 | 536 |
} |
| 536 | 537 |
Node n=_queue[_queue_tail++]; |
| 537 | 538 |
_processed->set(n,true); |
| 538 | 539 |
Node m; |
| 539 | 540 |
for(OutArcIt e(*G,n);e!=INVALID;++e) |
| 540 | 541 |
if(!(*_reached)[m=G->target(e)]) {
|
| 541 | 542 |
_queue[_queue_head++]=m; |
| 542 | 543 |
_reached->set(m,true); |
| 543 | 544 |
_pred->set(m,e); |
| 544 | 545 |
_dist->set(m,_curr_dist); |
| 545 | 546 |
if (nm[m] && rnode == INVALID) rnode = m; |
| 546 | 547 |
} |
| 547 | 548 |
return n; |
| 548 | 549 |
} |
| 549 | 550 |
|
| 550 | 551 |
///The next node to be processed. |
| 551 | 552 |
|
| 552 | 553 |
///Returns the next node to be processed or \c INVALID if the queue |
| 553 | 554 |
///is empty. |
| 554 | 555 |
Node nextNode() const |
| 555 | 556 |
{
|
| 556 | 557 |
return _queue_tail<_queue_head?_queue[_queue_tail]:INVALID; |
| 557 | 558 |
} |
| 558 | 559 |
|
| 559 | 560 |
///Returns \c false if there are nodes to be processed. |
| 560 | 561 |
|
| 561 | 562 |
///Returns \c false if there are nodes to be processed |
| 562 | 563 |
///in the queue. |
| 563 | 564 |
bool emptyQueue() const { return _queue_tail==_queue_head; }
|
| 564 | 565 |
|
| 565 | 566 |
///Returns the number of the nodes to be processed. |
| 566 | 567 |
|
| 567 | 568 |
///Returns the number of the nodes to be processed |
| 568 | 569 |
///in the queue. |
| 569 | 570 |
int queueSize() const { return _queue_head-_queue_tail; }
|
| 570 | 571 |
|
| 571 | 572 |
///Executes the algorithm. |
| 572 | 573 |
|
| 573 | 574 |
///Executes the algorithm. |
| 574 | 575 |
/// |
| 575 | 576 |
///This method runs the %BFS algorithm from the root node(s) |
| 576 | 577 |
///in order to compute the shortest path to each node. |
| 577 | 578 |
/// |
| 578 | 579 |
///The algorithm computes |
| 579 | 580 |
///- the shortest path tree (forest), |
| 580 | 581 |
///- the distance of each node from the root(s). |
| 581 | 582 |
/// |
| 582 | 583 |
///\pre init() must be called and at least one root node should be |
| 583 | 584 |
///added with addSource() before using this function. |
| 584 | 585 |
/// |
| 585 | 586 |
///\note <tt>b.start()</tt> is just a shortcut of the following code. |
| 586 | 587 |
///\code |
| 587 | 588 |
/// while ( !b.emptyQueue() ) {
|
| 588 | 589 |
/// b.processNextNode(); |
| 589 | 590 |
/// } |
| 590 | 591 |
///\endcode |
| 591 | 592 |
void start() |
| 592 | 593 |
{
|
| 593 | 594 |
while ( !emptyQueue() ) processNextNode(); |
| 594 | 595 |
} |
| 595 | 596 |
|
| 596 | 597 |
///Executes the algorithm until the given target node is reached. |
| 597 | 598 |
|
| 598 | 599 |
///Executes the algorithm until the given target node is reached. |
| 599 | 600 |
/// |
| 600 | 601 |
///This method runs the %BFS algorithm from the root node(s) |
| 601 | 602 |
///in order to compute the shortest path to \c t. |
| 602 | 603 |
/// |
| 603 | 604 |
///The algorithm computes |
| 604 | 605 |
///- the shortest path to \c t, |
| 605 | 606 |
///- the distance of \c t from the root(s). |
| 606 | 607 |
/// |
| 607 | 608 |
///\pre init() must be called and at least one root node should be |
| 608 | 609 |
///added with addSource() before using this function. |
| 609 | 610 |
/// |
| 610 | 611 |
///\note <tt>b.start(t)</tt> is just a shortcut of the following code. |
| 611 | 612 |
///\code |
| 612 | 613 |
/// bool reach = false; |
| 613 | 614 |
/// while ( !b.emptyQueue() && !reach ) {
|
| 614 | 615 |
/// b.processNextNode(t, reach); |
| 615 | 616 |
/// } |
| 616 | 617 |
///\endcode |
| 617 | 618 |
void start(Node t) |
| 618 | 619 |
{
|
| 619 | 620 |
bool reach = false; |
| 620 | 621 |
while ( !emptyQueue() && !reach ) processNextNode(t, reach); |
| 621 | 622 |
} |
| 622 | 623 |
|
| 623 | 624 |
///Executes the algorithm until a condition is met. |
| 624 | 625 |
|
| 625 | 626 |
///Executes the algorithm until a condition is met. |
| 626 | 627 |
/// |
| 627 | 628 |
///This method runs the %BFS algorithm from the root node(s) in |
| 628 | 629 |
///order to compute the shortest path to a node \c v with |
| 629 | 630 |
/// <tt>nm[v]</tt> true, if such a node can be found. |
| 630 | 631 |
/// |
| 631 | 632 |
///\param nm A \c bool (or convertible) node map. The algorithm |
| 632 | 633 |
///will stop when it reaches a node \c v with <tt>nm[v]</tt> true. |
| 633 | 634 |
/// |
| 634 | 635 |
///\return The reached node \c v with <tt>nm[v]</tt> true or |
| 635 | 636 |
///\c INVALID if no such node was found. |
| 636 | 637 |
/// |
| 637 | 638 |
///\pre init() must be called and at least one root node should be |
| 638 | 639 |
///added with addSource() before using this function. |
| 639 | 640 |
/// |
| 640 | 641 |
///\note <tt>b.start(nm)</tt> is just a shortcut of the following code. |
| 641 | 642 |
///\code |
| 642 | 643 |
/// Node rnode = INVALID; |
| 643 | 644 |
/// while ( !b.emptyQueue() && rnode == INVALID ) {
|
| 644 | 645 |
/// b.processNextNode(nm, rnode); |
| 645 | 646 |
/// } |
| 646 | 647 |
/// return rnode; |
| 647 | 648 |
///\endcode |
| 648 | 649 |
template<class NodeBoolMap> |
| 649 | 650 |
Node start(const NodeBoolMap &nm) |
| 650 | 651 |
{
|
| 651 | 652 |
Node rnode = INVALID; |
| 652 | 653 |
while ( !emptyQueue() && rnode == INVALID ) {
|
| 653 | 654 |
processNextNode(nm, rnode); |
| 654 | 655 |
} |
| 655 | 656 |
return rnode; |
| 656 | 657 |
} |
| 657 | 658 |
|
| 658 | 659 |
///Runs the algorithm from the given source node. |
| 659 | 660 |
|
| 660 | 661 |
///This method runs the %BFS algorithm from node \c s |
| 661 | 662 |
///in order to compute the shortest path to each node. |
| 662 | 663 |
/// |
| 663 | 664 |
///The algorithm computes |
| 664 | 665 |
///- the shortest path tree, |
| 665 | 666 |
///- the distance of each node from the root. |
| 666 | 667 |
/// |
| 667 | 668 |
///\note <tt>b.run(s)</tt> is just a shortcut of the following code. |
| 668 | 669 |
///\code |
| 669 | 670 |
/// b.init(); |
| 670 | 671 |
/// b.addSource(s); |
| 671 | 672 |
/// b.start(); |
| 672 | 673 |
///\endcode |
| 673 | 674 |
void run(Node s) {
|
| 674 | 675 |
init(); |
| 675 | 676 |
addSource(s); |
| 676 | 677 |
start(); |
| 677 | 678 |
} |
| 678 | 679 |
|
| 679 | 680 |
///Finds the shortest path between \c s and \c t. |
| 680 | 681 |
|
| 681 | 682 |
///This method runs the %BFS algorithm from node \c s |
| 682 | 683 |
///in order to compute the shortest path to node \c t |
| 683 | 684 |
///(it stops searching when \c t is processed). |
| 684 | 685 |
/// |
| 685 | 686 |
///\return \c true if \c t is reachable form \c s. |
| 686 | 687 |
/// |
| 687 | 688 |
///\note Apart from the return value, <tt>b.run(s,t)</tt> is just a |
| 688 | 689 |
///shortcut of the following code. |
| 689 | 690 |
///\code |
| 690 | 691 |
/// b.init(); |
| 691 | 692 |
/// b.addSource(s); |
| 692 | 693 |
/// b.start(t); |
| 693 | 694 |
///\endcode |
| 694 | 695 |
bool run(Node s,Node t) {
|
| 695 | 696 |
init(); |
| 696 | 697 |
addSource(s); |
| 697 | 698 |
start(t); |
| 698 | 699 |
return reached(t); |
| 699 | 700 |
} |
| 700 | 701 |
|
| 701 | 702 |
///Runs the algorithm to visit all nodes in the digraph. |
| 702 | 703 |
|
| 703 | 704 |
///This method runs the %BFS algorithm in order to |
| 704 | 705 |
///compute the shortest path to each node. |
| 705 | 706 |
/// |
| 706 | 707 |
///The algorithm computes |
| 707 | 708 |
///- the shortest path tree (forest), |
| 708 | 709 |
///- the distance of each node from the root(s). |
| 709 | 710 |
/// |
| 710 | 711 |
///\note <tt>b.run(s)</tt> is just a shortcut of the following code. |
| 711 | 712 |
///\code |
| 712 | 713 |
/// b.init(); |
| 713 | 714 |
/// for (NodeIt n(gr); n != INVALID; ++n) {
|
| 714 | 715 |
/// if (!b.reached(n)) {
|
| 715 | 716 |
/// b.addSource(n); |
| 716 | 717 |
/// b.start(); |
| 717 | 718 |
/// } |
| 718 | 719 |
/// } |
| 719 | 720 |
///\endcode |
| 720 | 721 |
void run() {
|
| 721 | 722 |
init(); |
| 722 | 723 |
for (NodeIt n(*G); n != INVALID; ++n) {
|
| 723 | 724 |
if (!reached(n)) {
|
| 724 | 725 |
addSource(n); |
| 725 | 726 |
start(); |
| 726 | 727 |
} |
| 727 | 728 |
} |
| 728 | 729 |
} |
| 729 | 730 |
|
| 730 | 731 |
///@} |
| 731 | 732 |
|
| 732 | 733 |
///\name Query Functions |
| 733 | 734 |
///The results of the BFS algorithm can be obtained using these |
| 734 | 735 |
///functions.\n |
| 735 | 736 |
///Either \ref run(Node) "run()" or \ref start() should be called |
| 736 | 737 |
///before using them. |
| 737 | 738 |
|
| 738 | 739 |
///@{
|
| 739 | 740 |
|
| 740 |
///The shortest path to |
|
| 741 |
///The shortest path to the given node. |
|
| 741 | 742 |
|
| 742 |
///Returns the shortest path to |
|
| 743 |
///Returns the shortest path to the given node from the root(s). |
|
| 743 | 744 |
/// |
| 744 | 745 |
///\warning \c t should be reached from the root(s). |
| 745 | 746 |
/// |
| 746 | 747 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 747 | 748 |
///must be called before using this function. |
| 748 | 749 |
Path path(Node t) const { return Path(*G, *_pred, t); }
|
| 749 | 750 |
|
| 750 |
///The distance of |
|
| 751 |
///The distance of the given node from the root(s). |
|
| 751 | 752 |
|
| 752 |
///Returns the distance of |
|
| 753 |
///Returns the distance of the given node from the root(s). |
|
| 753 | 754 |
/// |
| 754 | 755 |
///\warning If node \c v is not reached from the root(s), then |
| 755 | 756 |
///the return value of this function is undefined. |
| 756 | 757 |
/// |
| 757 | 758 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 758 | 759 |
///must be called before using this function. |
| 759 | 760 |
int dist(Node v) const { return (*_dist)[v]; }
|
| 760 | 761 |
|
| 761 |
///Returns the 'previous arc' of the shortest path tree for a node. |
|
| 762 |
|
|
| 762 |
///\brief Returns the 'previous arc' of the shortest path tree for |
|
| 763 |
///the given node. |
|
| 764 |
/// |
|
| 763 | 765 |
///This function returns the 'previous arc' of the shortest path |
| 764 | 766 |
///tree for the node \c v, i.e. it returns the last arc of a |
| 765 | 767 |
///shortest path from a root to \c v. It is \c INVALID if \c v |
| 766 | 768 |
///is not reached from the root(s) or if \c v is a root. |
| 767 | 769 |
/// |
| 768 | 770 |
///The shortest path tree used here is equal to the shortest path |
| 769 |
///tree used in \ref predNode(). |
|
| 771 |
///tree used in \ref predNode() and \ref predMap(). |
|
| 770 | 772 |
/// |
| 771 | 773 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 772 | 774 |
///must be called before using this function. |
| 773 | 775 |
Arc predArc(Node v) const { return (*_pred)[v];}
|
| 774 | 776 |
|
| 775 |
///Returns the 'previous node' of the shortest path tree for a node. |
|
| 776 |
|
|
| 777 |
///\brief Returns the 'previous node' of the shortest path tree for |
|
| 778 |
///the given node. |
|
| 779 |
/// |
|
| 777 | 780 |
///This function returns the 'previous node' of the shortest path |
| 778 | 781 |
///tree for the node \c v, i.e. it returns the last but one node |
| 779 |
/// |
|
| 782 |
///of a shortest path from a root to \c v. It is \c INVALID |
|
| 780 | 783 |
///if \c v is not reached from the root(s) or if \c v is a root. |
| 781 | 784 |
/// |
| 782 | 785 |
///The shortest path tree used here is equal to the shortest path |
| 783 |
///tree used in \ref predArc(). |
|
| 786 |
///tree used in \ref predArc() and \ref predMap(). |
|
| 784 | 787 |
/// |
| 785 | 788 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 786 | 789 |
///must be called before using this function. |
| 787 | 790 |
Node predNode(Node v) const { return (*_pred)[v]==INVALID ? INVALID:
|
| 788 | 791 |
G->source((*_pred)[v]); } |
| 789 | 792 |
|
| 790 | 793 |
///\brief Returns a const reference to the node map that stores the |
| 791 | 794 |
/// distances of the nodes. |
| 792 | 795 |
/// |
| 793 | 796 |
///Returns a const reference to the node map that stores the distances |
| 794 | 797 |
///of the nodes calculated by the algorithm. |
| 795 | 798 |
/// |
| 796 | 799 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 797 | 800 |
///must be called before using this function. |
| 798 | 801 |
const DistMap &distMap() const { return *_dist;}
|
| 799 | 802 |
|
| 800 | 803 |
///\brief Returns a const reference to the node map that stores the |
| 801 | 804 |
///predecessor arcs. |
| 802 | 805 |
/// |
| 803 | 806 |
///Returns a const reference to the node map that stores the predecessor |
| 804 |
///arcs, which form the shortest path tree. |
|
| 807 |
///arcs, which form the shortest path tree (forest). |
|
| 805 | 808 |
/// |
| 806 | 809 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 807 | 810 |
///must be called before using this function. |
| 808 | 811 |
const PredMap &predMap() const { return *_pred;}
|
| 809 | 812 |
|
| 810 |
///Checks if |
|
| 813 |
///Checks if the given node is reached from the root(s). |
|
| 811 | 814 |
|
| 812 | 815 |
///Returns \c true if \c v is reached from the root(s). |
| 813 | 816 |
/// |
| 814 | 817 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 815 | 818 |
///must be called before using this function. |
| 816 | 819 |
bool reached(Node v) const { return (*_reached)[v]; }
|
| 817 | 820 |
|
| 818 | 821 |
///@} |
| 819 | 822 |
}; |
| 820 | 823 |
|
| 821 | 824 |
///Default traits class of bfs() function. |
| 822 | 825 |
|
| 823 | 826 |
///Default traits class of bfs() function. |
| 824 | 827 |
///\tparam GR Digraph type. |
| 825 | 828 |
template<class GR> |
| 826 | 829 |
struct BfsWizardDefaultTraits |
| 827 | 830 |
{
|
| 828 | 831 |
///The type of the digraph the algorithm runs on. |
| 829 | 832 |
typedef GR Digraph; |
| 830 | 833 |
|
| 831 | 834 |
///\brief The type of the map that stores the predecessor |
| 832 | 835 |
///arcs of the shortest paths. |
| 833 | 836 |
/// |
| 834 | 837 |
///The type of the map that stores the predecessor |
| 835 | 838 |
///arcs of the shortest paths. |
| 836 |
///It must |
|
| 839 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 837 | 840 |
typedef typename Digraph::template NodeMap<typename Digraph::Arc> PredMap; |
| 838 | 841 |
///Instantiates a PredMap. |
| 839 | 842 |
|
| 840 | 843 |
///This function instantiates a PredMap. |
| 841 | 844 |
///\param g is the digraph, to which we would like to define the |
| 842 | 845 |
///PredMap. |
| 843 | 846 |
static PredMap *createPredMap(const Digraph &g) |
| 844 | 847 |
{
|
| 845 | 848 |
return new PredMap(g); |
| 846 | 849 |
} |
| 847 | 850 |
|
| 848 | 851 |
///The type of the map that indicates which nodes are processed. |
| 849 | 852 |
|
| 850 | 853 |
///The type of the map that indicates which nodes are processed. |
| 851 |
///It must |
|
| 854 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 852 | 855 |
///By default it is a NullMap. |
| 853 | 856 |
typedef NullMap<typename Digraph::Node,bool> ProcessedMap; |
| 854 | 857 |
///Instantiates a ProcessedMap. |
| 855 | 858 |
|
| 856 | 859 |
///This function instantiates a ProcessedMap. |
| 857 | 860 |
///\param g is the digraph, to which |
| 858 | 861 |
///we would like to define the ProcessedMap. |
| 859 | 862 |
#ifdef DOXYGEN |
| 860 | 863 |
static ProcessedMap *createProcessedMap(const Digraph &g) |
| 861 | 864 |
#else |
| 862 | 865 |
static ProcessedMap *createProcessedMap(const Digraph &) |
| 863 | 866 |
#endif |
| 864 | 867 |
{
|
| 865 | 868 |
return new ProcessedMap(); |
| 866 | 869 |
} |
| 867 | 870 |
|
| 868 | 871 |
///The type of the map that indicates which nodes are reached. |
| 869 | 872 |
|
| 870 | 873 |
///The type of the map that indicates which nodes are reached. |
| 871 |
///It must |
|
| 874 |
///It must conform to the \ref concepts::ReadWriteMap "ReadWriteMap" concept. |
|
| 872 | 875 |
typedef typename Digraph::template NodeMap<bool> ReachedMap; |
| 873 | 876 |
///Instantiates a ReachedMap. |
| 874 | 877 |
|
| 875 | 878 |
///This function instantiates a ReachedMap. |
| 876 | 879 |
///\param g is the digraph, to which |
| 877 | 880 |
///we would like to define the ReachedMap. |
| 878 | 881 |
static ReachedMap *createReachedMap(const Digraph &g) |
| 879 | 882 |
{
|
| 880 | 883 |
return new ReachedMap(g); |
| 881 | 884 |
} |
| 882 | 885 |
|
| 883 | 886 |
///The type of the map that stores the distances of the nodes. |
| 884 | 887 |
|
| 885 | 888 |
///The type of the map that stores the distances of the nodes. |
| 886 |
///It must |
|
| 889 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 887 | 890 |
typedef typename Digraph::template NodeMap<int> DistMap; |
| 888 | 891 |
///Instantiates a DistMap. |
| 889 | 892 |
|
| 890 | 893 |
///This function instantiates a DistMap. |
| 891 | 894 |
///\param g is the digraph, to which we would like to define |
| 892 | 895 |
///the DistMap |
| 893 | 896 |
static DistMap *createDistMap(const Digraph &g) |
| 894 | 897 |
{
|
| 895 | 898 |
return new DistMap(g); |
| 896 | 899 |
} |
| 897 | 900 |
|
| 898 | 901 |
///The type of the shortest paths. |
| 899 | 902 |
|
| 900 | 903 |
///The type of the shortest paths. |
| 901 |
///It must |
|
| 904 |
///It must conform to the \ref concepts::Path "Path" concept. |
|
| 902 | 905 |
typedef lemon::Path<Digraph> Path; |
| 903 | 906 |
}; |
| 904 | 907 |
|
| 905 | 908 |
/// Default traits class used by BfsWizard |
| 906 | 909 |
|
| 907 |
/// To make it easier to use Bfs algorithm |
|
| 908 |
/// we have created a wizard class. |
|
| 909 |
/// This \ref BfsWizard class needs default traits, |
|
| 910 |
/// as well as the \ref Bfs class. |
|
| 911 |
/// The \ref BfsWizardBase is a class to be the default traits of the |
|
| 912 |
/// \ref BfsWizard class. |
|
| 910 |
/// Default traits class used by BfsWizard. |
|
| 911 |
/// \tparam GR The type of the digraph. |
|
| 913 | 912 |
template<class GR> |
| 914 | 913 |
class BfsWizardBase : public BfsWizardDefaultTraits<GR> |
| 915 | 914 |
{
|
| 916 | 915 |
|
| 917 | 916 |
typedef BfsWizardDefaultTraits<GR> Base; |
| 918 | 917 |
protected: |
| 919 | 918 |
//The type of the nodes in the digraph. |
| 920 | 919 |
typedef typename Base::Digraph::Node Node; |
| 921 | 920 |
|
| 922 | 921 |
//Pointer to the digraph the algorithm runs on. |
| 923 | 922 |
void *_g; |
| 924 | 923 |
//Pointer to the map of reached nodes. |
| 925 | 924 |
void *_reached; |
| 926 | 925 |
//Pointer to the map of processed nodes. |
| 927 | 926 |
void *_processed; |
| 928 | 927 |
//Pointer to the map of predecessors arcs. |
| 929 | 928 |
void *_pred; |
| 930 | 929 |
//Pointer to the map of distances. |
| 931 | 930 |
void *_dist; |
| 932 | 931 |
//Pointer to the shortest path to the target node. |
| 933 | 932 |
void *_path; |
| 934 | 933 |
//Pointer to the distance of the target node. |
| 935 | 934 |
int *_di; |
| 936 | 935 |
|
| 937 | 936 |
public: |
| 938 | 937 |
/// Constructor. |
| 939 | 938 |
|
| 940 |
/// This constructor does not require parameters, |
|
| 939 |
/// This constructor does not require parameters, it initiates |
|
| 941 | 940 |
/// all of the attributes to \c 0. |
| 942 | 941 |
BfsWizardBase() : _g(0), _reached(0), _processed(0), _pred(0), |
| 943 | 942 |
_dist(0), _path(0), _di(0) {}
|
| 944 | 943 |
|
| 945 | 944 |
/// Constructor. |
| 946 | 945 |
|
| 947 | 946 |
/// This constructor requires one parameter, |
| 948 | 947 |
/// others are initiated to \c 0. |
| 949 | 948 |
/// \param g The digraph the algorithm runs on. |
| 950 | 949 |
BfsWizardBase(const GR &g) : |
| 951 | 950 |
_g(reinterpret_cast<void*>(const_cast<GR*>(&g))), |
| 952 | 951 |
_reached(0), _processed(0), _pred(0), _dist(0), _path(0), _di(0) {}
|
| 953 | 952 |
|
| 954 | 953 |
}; |
| 955 | 954 |
|
| 956 | 955 |
/// Auxiliary class for the function-type interface of BFS algorithm. |
| 957 | 956 |
|
| 958 | 957 |
/// This auxiliary class is created to implement the |
| 959 | 958 |
/// \ref bfs() "function-type interface" of \ref Bfs algorithm. |
| 960 | 959 |
/// It does not have own \ref run(Node) "run()" method, it uses the |
| 961 | 960 |
/// functions and features of the plain \ref Bfs. |
| 962 | 961 |
/// |
| 963 | 962 |
/// This class should only be used through the \ref bfs() function, |
| 964 | 963 |
/// which makes it easier to use the algorithm. |
| 965 | 964 |
template<class TR> |
| 966 | 965 |
class BfsWizard : public TR |
| 967 | 966 |
{
|
| 968 | 967 |
typedef TR Base; |
| 969 | 968 |
|
| 970 |
///The type of the digraph the algorithm runs on. |
|
| 971 | 969 |
typedef typename TR::Digraph Digraph; |
| 972 | 970 |
|
| 973 | 971 |
typedef typename Digraph::Node Node; |
| 974 | 972 |
typedef typename Digraph::NodeIt NodeIt; |
| 975 | 973 |
typedef typename Digraph::Arc Arc; |
| 976 | 974 |
typedef typename Digraph::OutArcIt OutArcIt; |
| 977 | 975 |
|
| 978 |
///\brief The type of the map that stores the predecessor |
|
| 979 |
///arcs of the shortest paths. |
|
| 980 | 976 |
typedef typename TR::PredMap PredMap; |
| 981 |
///\brief The type of the map that stores the distances of the nodes. |
|
| 982 | 977 |
typedef typename TR::DistMap DistMap; |
| 983 |
///\brief The type of the map that indicates which nodes are reached. |
|
| 984 | 978 |
typedef typename TR::ReachedMap ReachedMap; |
| 985 |
///\brief The type of the map that indicates which nodes are processed. |
|
| 986 | 979 |
typedef typename TR::ProcessedMap ProcessedMap; |
| 987 |
///The type of the shortest paths |
|
| 988 | 980 |
typedef typename TR::Path Path; |
| 989 | 981 |
|
| 990 | 982 |
public: |
| 991 | 983 |
|
| 992 | 984 |
/// Constructor. |
| 993 | 985 |
BfsWizard() : TR() {}
|
| 994 | 986 |
|
| 995 | 987 |
/// Constructor that requires parameters. |
| 996 | 988 |
|
| 997 | 989 |
/// Constructor that requires parameters. |
| 998 | 990 |
/// These parameters will be the default values for the traits class. |
| 999 | 991 |
/// \param g The digraph the algorithm runs on. |
| 1000 | 992 |
BfsWizard(const Digraph &g) : |
| 1001 | 993 |
TR(g) {}
|
| 1002 | 994 |
|
| 1003 | 995 |
///Copy constructor |
| 1004 | 996 |
BfsWizard(const TR &b) : TR(b) {}
|
| 1005 | 997 |
|
| 1006 | 998 |
~BfsWizard() {}
|
| 1007 | 999 |
|
| 1008 | 1000 |
///Runs BFS algorithm from the given source node. |
| 1009 | 1001 |
|
| 1010 | 1002 |
///This method runs BFS algorithm from node \c s |
| 1011 | 1003 |
///in order to compute the shortest path to each node. |
| 1012 | 1004 |
void run(Node s) |
| 1013 | 1005 |
{
|
| 1014 | 1006 |
Bfs<Digraph,TR> alg(*reinterpret_cast<const Digraph*>(Base::_g)); |
| 1015 | 1007 |
if (Base::_pred) |
| 1016 | 1008 |
alg.predMap(*reinterpret_cast<PredMap*>(Base::_pred)); |
| 1017 | 1009 |
if (Base::_dist) |
| 1018 | 1010 |
alg.distMap(*reinterpret_cast<DistMap*>(Base::_dist)); |
| 1019 | 1011 |
if (Base::_reached) |
| 1020 | 1012 |
alg.reachedMap(*reinterpret_cast<ReachedMap*>(Base::_reached)); |
| 1021 | 1013 |
if (Base::_processed) |
| 1022 | 1014 |
alg.processedMap(*reinterpret_cast<ProcessedMap*>(Base::_processed)); |
| 1023 | 1015 |
if (s!=INVALID) |
| 1024 | 1016 |
alg.run(s); |
| 1025 | 1017 |
else |
| 1026 | 1018 |
alg.run(); |
| 1027 | 1019 |
} |
| 1028 | 1020 |
|
| 1029 | 1021 |
///Finds the shortest path between \c s and \c t. |
| 1030 | 1022 |
|
| 1031 | 1023 |
///This method runs BFS algorithm from node \c s |
| 1032 | 1024 |
///in order to compute the shortest path to node \c t |
| 1033 | 1025 |
///(it stops searching when \c t is processed). |
| 1034 | 1026 |
/// |
| 1035 | 1027 |
///\return \c true if \c t is reachable form \c s. |
| 1036 | 1028 |
bool run(Node s, Node t) |
| 1037 | 1029 |
{
|
| 1038 | 1030 |
Bfs<Digraph,TR> alg(*reinterpret_cast<const Digraph*>(Base::_g)); |
| 1039 | 1031 |
if (Base::_pred) |
| 1040 | 1032 |
alg.predMap(*reinterpret_cast<PredMap*>(Base::_pred)); |
| 1041 | 1033 |
if (Base::_dist) |
| 1042 | 1034 |
alg.distMap(*reinterpret_cast<DistMap*>(Base::_dist)); |
| 1043 | 1035 |
if (Base::_reached) |
| 1044 | 1036 |
alg.reachedMap(*reinterpret_cast<ReachedMap*>(Base::_reached)); |
| 1045 | 1037 |
if (Base::_processed) |
| 1046 | 1038 |
alg.processedMap(*reinterpret_cast<ProcessedMap*>(Base::_processed)); |
| 1047 | 1039 |
alg.run(s,t); |
| 1048 | 1040 |
if (Base::_path) |
| 1049 | 1041 |
*reinterpret_cast<Path*>(Base::_path) = alg.path(t); |
| 1050 | 1042 |
if (Base::_di) |
| 1051 | 1043 |
*Base::_di = alg.dist(t); |
| 1052 | 1044 |
return alg.reached(t); |
| 1053 | 1045 |
} |
| 1054 | 1046 |
|
| 1055 | 1047 |
///Runs BFS algorithm to visit all nodes in the digraph. |
| 1056 | 1048 |
|
| 1057 | 1049 |
///This method runs BFS algorithm in order to compute |
| 1058 | 1050 |
///the shortest path to each node. |
| 1059 | 1051 |
void run() |
| 1060 | 1052 |
{
|
| 1061 | 1053 |
run(INVALID); |
| 1062 | 1054 |
} |
| 1063 | 1055 |
|
| 1064 | 1056 |
template<class T> |
| 1065 | 1057 |
struct SetPredMapBase : public Base {
|
| 1066 | 1058 |
typedef T PredMap; |
| 1067 | 1059 |
static PredMap *createPredMap(const Digraph &) { return 0; };
|
| 1068 | 1060 |
SetPredMapBase(const TR &b) : TR(b) {}
|
| 1069 | 1061 |
}; |
| 1070 |
///\brief \ref named-func-param "Named parameter" |
|
| 1071 |
///for setting PredMap object. |
|
| 1062 |
|
|
| 1063 |
///\brief \ref named-templ-param "Named parameter" for setting |
|
| 1064 |
///the predecessor map. |
|
| 1072 | 1065 |
/// |
| 1073 |
///\ref named-func-param "Named parameter" |
|
| 1074 |
///for setting PredMap object. |
|
| 1066 |
///\ref named-templ-param "Named parameter" function for setting |
|
| 1067 |
///the map that stores the predecessor arcs of the nodes. |
|
| 1075 | 1068 |
template<class T> |
| 1076 | 1069 |
BfsWizard<SetPredMapBase<T> > predMap(const T &t) |
| 1077 | 1070 |
{
|
| 1078 | 1071 |
Base::_pred=reinterpret_cast<void*>(const_cast<T*>(&t)); |
| 1079 | 1072 |
return BfsWizard<SetPredMapBase<T> >(*this); |
| 1080 | 1073 |
} |
| 1081 | 1074 |
|
| 1082 | 1075 |
template<class T> |
| 1083 | 1076 |
struct SetReachedMapBase : public Base {
|
| 1084 | 1077 |
typedef T ReachedMap; |
| 1085 | 1078 |
static ReachedMap *createReachedMap(const Digraph &) { return 0; };
|
| 1086 | 1079 |
SetReachedMapBase(const TR &b) : TR(b) {}
|
| 1087 | 1080 |
}; |
| 1088 |
///\brief \ref named-func-param "Named parameter" |
|
| 1089 |
///for setting ReachedMap object. |
|
| 1081 |
|
|
| 1082 |
///\brief \ref named-templ-param "Named parameter" for setting |
|
| 1083 |
///the reached map. |
|
| 1090 | 1084 |
/// |
| 1091 |
/// \ref named-func-param "Named parameter" |
|
| 1092 |
///for setting ReachedMap object. |
|
| 1085 |
///\ref named-templ-param "Named parameter" function for setting |
|
| 1086 |
///the map that indicates which nodes are reached. |
|
| 1093 | 1087 |
template<class T> |
| 1094 | 1088 |
BfsWizard<SetReachedMapBase<T> > reachedMap(const T &t) |
| 1095 | 1089 |
{
|
| 1096 | 1090 |
Base::_reached=reinterpret_cast<void*>(const_cast<T*>(&t)); |
| 1097 | 1091 |
return BfsWizard<SetReachedMapBase<T> >(*this); |
| 1098 | 1092 |
} |
| 1099 | 1093 |
|
| 1100 | 1094 |
template<class T> |
| 1101 | 1095 |
struct SetDistMapBase : public Base {
|
| 1102 | 1096 |
typedef T DistMap; |
| 1103 | 1097 |
static DistMap *createDistMap(const Digraph &) { return 0; };
|
| 1104 | 1098 |
SetDistMapBase(const TR &b) : TR(b) {}
|
| 1105 | 1099 |
}; |
| 1106 |
///\brief \ref named-func-param "Named parameter" |
|
| 1107 |
///for setting DistMap object. |
|
| 1100 |
|
|
| 1101 |
///\brief \ref named-templ-param "Named parameter" for setting |
|
| 1102 |
///the distance map. |
|
| 1108 | 1103 |
/// |
| 1109 |
/// \ref named-func-param "Named parameter" |
|
| 1110 |
///for setting DistMap object. |
|
| 1104 |
///\ref named-templ-param "Named parameter" function for setting |
|
| 1105 |
///the map that stores the distances of the nodes calculated |
|
| 1106 |
///by the algorithm. |
|
| 1111 | 1107 |
template<class T> |
| 1112 | 1108 |
BfsWizard<SetDistMapBase<T> > distMap(const T &t) |
| 1113 | 1109 |
{
|
| 1114 | 1110 |
Base::_dist=reinterpret_cast<void*>(const_cast<T*>(&t)); |
| 1115 | 1111 |
return BfsWizard<SetDistMapBase<T> >(*this); |
| 1116 | 1112 |
} |
| 1117 | 1113 |
|
| 1118 | 1114 |
template<class T> |
| 1119 | 1115 |
struct SetProcessedMapBase : public Base {
|
| 1120 | 1116 |
typedef T ProcessedMap; |
| 1121 | 1117 |
static ProcessedMap *createProcessedMap(const Digraph &) { return 0; };
|
| 1122 | 1118 |
SetProcessedMapBase(const TR &b) : TR(b) {}
|
| 1123 | 1119 |
}; |
| 1124 |
///\brief \ref named-func-param "Named parameter" |
|
| 1125 |
///for setting ProcessedMap object. |
|
| 1120 |
|
|
| 1121 |
///\brief \ref named-func-param "Named parameter" for setting |
|
| 1122 |
///the processed map. |
|
| 1126 | 1123 |
/// |
| 1127 |
/// \ref named-func-param "Named parameter" |
|
| 1128 |
///for setting ProcessedMap object. |
|
| 1124 |
///\ref named-templ-param "Named parameter" function for setting |
|
| 1125 |
///the map that indicates which nodes are processed. |
|
| 1129 | 1126 |
template<class T> |
| 1130 | 1127 |
BfsWizard<SetProcessedMapBase<T> > processedMap(const T &t) |
| 1131 | 1128 |
{
|
| 1132 | 1129 |
Base::_processed=reinterpret_cast<void*>(const_cast<T*>(&t)); |
| 1133 | 1130 |
return BfsWizard<SetProcessedMapBase<T> >(*this); |
| 1134 | 1131 |
} |
| 1135 | 1132 |
|
| 1136 | 1133 |
template<class T> |
| 1137 | 1134 |
struct SetPathBase : public Base {
|
| 1138 | 1135 |
typedef T Path; |
| 1139 | 1136 |
SetPathBase(const TR &b) : TR(b) {}
|
| 1140 | 1137 |
}; |
| 1141 | 1138 |
///\brief \ref named-func-param "Named parameter" |
| 1142 | 1139 |
///for getting the shortest path to the target node. |
| 1143 | 1140 |
/// |
| 1144 | 1141 |
///\ref named-func-param "Named parameter" |
| 1145 | 1142 |
///for getting the shortest path to the target node. |
| 1146 | 1143 |
template<class T> |
| 1147 | 1144 |
BfsWizard<SetPathBase<T> > path(const T &t) |
| 1148 | 1145 |
{
|
| 1149 | 1146 |
Base::_path=reinterpret_cast<void*>(const_cast<T*>(&t)); |
| 1150 | 1147 |
return BfsWizard<SetPathBase<T> >(*this); |
| 1151 | 1148 |
} |
| 1152 | 1149 |
|
| 1153 | 1150 |
///\brief \ref named-func-param "Named parameter" |
| 1154 | 1151 |
///for getting the distance of the target node. |
| 1155 | 1152 |
/// |
| 1156 | 1153 |
///\ref named-func-param "Named parameter" |
| 1157 | 1154 |
///for getting the distance of the target node. |
| 1158 | 1155 |
BfsWizard dist(const int &d) |
| 1159 | 1156 |
{
|
| 1160 | 1157 |
Base::_di=const_cast<int*>(&d); |
| 1161 | 1158 |
return *this; |
| 1162 | 1159 |
} |
| 1163 | 1160 |
|
| 1164 | 1161 |
}; |
| 1165 | 1162 |
|
| 1166 | 1163 |
///Function-type interface for BFS algorithm. |
| 1167 | 1164 |
|
| 1168 | 1165 |
/// \ingroup search |
| 1169 | 1166 |
///Function-type interface for BFS algorithm. |
| 1170 | 1167 |
/// |
| 1171 | 1168 |
///This function also has several \ref named-func-param "named parameters", |
| 1172 | 1169 |
///they are declared as the members of class \ref BfsWizard. |
| 1173 | 1170 |
///The following examples show how to use these parameters. |
| 1174 | 1171 |
///\code |
| 1175 | 1172 |
/// // Compute shortest path from node s to each node |
| 1176 | 1173 |
/// bfs(g).predMap(preds).distMap(dists).run(s); |
| 1177 | 1174 |
/// |
| 1178 | 1175 |
/// // Compute shortest path from s to t |
| 1179 | 1176 |
/// bool reached = bfs(g).path(p).dist(d).run(s,t); |
| 1180 | 1177 |
///\endcode |
| 1181 | 1178 |
///\warning Don't forget to put the \ref BfsWizard::run(Node) "run()" |
| 1182 | 1179 |
///to the end of the parameter list. |
| 1183 | 1180 |
///\sa BfsWizard |
| 1184 | 1181 |
///\sa Bfs |
| 1185 | 1182 |
template<class GR> |
| 1186 | 1183 |
BfsWizard<BfsWizardBase<GR> > |
| 1187 | 1184 |
bfs(const GR &digraph) |
| 1188 | 1185 |
{
|
| 1189 | 1186 |
return BfsWizard<BfsWizardBase<GR> >(digraph); |
| 1190 | 1187 |
} |
| 1191 | 1188 |
|
| 1192 | 1189 |
#ifdef DOXYGEN |
| 1193 | 1190 |
/// \brief Visitor class for BFS. |
| 1194 | 1191 |
/// |
| 1195 | 1192 |
/// This class defines the interface of the BfsVisit events, and |
| 1196 | 1193 |
/// it could be the base of a real visitor class. |
| 1197 |
template <typename |
|
| 1194 |
template <typename GR> |
|
| 1198 | 1195 |
struct BfsVisitor {
|
| 1199 |
typedef |
|
| 1196 |
typedef GR Digraph; |
|
| 1200 | 1197 |
typedef typename Digraph::Arc Arc; |
| 1201 | 1198 |
typedef typename Digraph::Node Node; |
| 1202 | 1199 |
/// \brief Called for the source node(s) of the BFS. |
| 1203 | 1200 |
/// |
| 1204 | 1201 |
/// This function is called for the source node(s) of the BFS. |
| 1205 | 1202 |
void start(const Node& node) {}
|
| 1206 | 1203 |
/// \brief Called when a node is reached first time. |
| 1207 | 1204 |
/// |
| 1208 | 1205 |
/// This function is called when a node is reached first time. |
| 1209 | 1206 |
void reach(const Node& node) {}
|
| 1210 | 1207 |
/// \brief Called when a node is processed. |
| 1211 | 1208 |
/// |
| 1212 | 1209 |
/// This function is called when a node is processed. |
| 1213 | 1210 |
void process(const Node& node) {}
|
| 1214 | 1211 |
/// \brief Called when an arc reaches a new node. |
| 1215 | 1212 |
/// |
| 1216 | 1213 |
/// This function is called when the BFS finds an arc whose target node |
| 1217 | 1214 |
/// is not reached yet. |
| 1218 | 1215 |
void discover(const Arc& arc) {}
|
| 1219 | 1216 |
/// \brief Called when an arc is examined but its target node is |
| 1220 | 1217 |
/// already discovered. |
| 1221 | 1218 |
/// |
| 1222 | 1219 |
/// This function is called when an arc is examined but its target node is |
| 1223 | 1220 |
/// already discovered. |
| 1224 | 1221 |
void examine(const Arc& arc) {}
|
| 1225 | 1222 |
}; |
| 1226 | 1223 |
#else |
| 1227 |
template <typename |
|
| 1224 |
template <typename GR> |
|
| 1228 | 1225 |
struct BfsVisitor {
|
| 1229 |
typedef |
|
| 1226 |
typedef GR Digraph; |
|
| 1230 | 1227 |
typedef typename Digraph::Arc Arc; |
| 1231 | 1228 |
typedef typename Digraph::Node Node; |
| 1232 | 1229 |
void start(const Node&) {}
|
| 1233 | 1230 |
void reach(const Node&) {}
|
| 1234 | 1231 |
void process(const Node&) {}
|
| 1235 | 1232 |
void discover(const Arc&) {}
|
| 1236 | 1233 |
void examine(const Arc&) {}
|
| 1237 | 1234 |
|
| 1238 | 1235 |
template <typename _Visitor> |
| 1239 | 1236 |
struct Constraints {
|
| 1240 | 1237 |
void constraints() {
|
| 1241 | 1238 |
Arc arc; |
| 1242 | 1239 |
Node node; |
| 1243 | 1240 |
visitor.start(node); |
| 1244 | 1241 |
visitor.reach(node); |
| 1245 | 1242 |
visitor.process(node); |
| 1246 | 1243 |
visitor.discover(arc); |
| 1247 | 1244 |
visitor.examine(arc); |
| 1248 | 1245 |
} |
| 1249 | 1246 |
_Visitor& visitor; |
| 1250 | 1247 |
}; |
| 1251 | 1248 |
}; |
| 1252 | 1249 |
#endif |
| 1253 | 1250 |
|
| 1254 | 1251 |
/// \brief Default traits class of BfsVisit class. |
| 1255 | 1252 |
/// |
| 1256 | 1253 |
/// Default traits class of BfsVisit class. |
| 1257 |
/// \tparam _Digraph The type of the digraph the algorithm runs on. |
|
| 1258 |
template<class _Digraph> |
|
| 1254 |
/// \tparam GR The type of the digraph the algorithm runs on. |
|
| 1255 |
template<class GR> |
|
| 1259 | 1256 |
struct BfsVisitDefaultTraits {
|
| 1260 | 1257 |
|
| 1261 | 1258 |
/// \brief The type of the digraph the algorithm runs on. |
| 1262 |
typedef |
|
| 1259 |
typedef GR Digraph; |
|
| 1263 | 1260 |
|
| 1264 | 1261 |
/// \brief The type of the map that indicates which nodes are reached. |
| 1265 | 1262 |
/// |
| 1266 | 1263 |
/// The type of the map that indicates which nodes are reached. |
| 1267 |
/// It must |
|
| 1264 |
/// It must conform to the \ref concepts::ReadWriteMap "ReadWriteMap" concept. |
|
| 1268 | 1265 |
typedef typename Digraph::template NodeMap<bool> ReachedMap; |
| 1269 | 1266 |
|
| 1270 | 1267 |
/// \brief Instantiates a ReachedMap. |
| 1271 | 1268 |
/// |
| 1272 | 1269 |
/// This function instantiates a ReachedMap. |
| 1273 | 1270 |
/// \param digraph is the digraph, to which |
| 1274 | 1271 |
/// we would like to define the ReachedMap. |
| 1275 | 1272 |
static ReachedMap *createReachedMap(const Digraph &digraph) {
|
| 1276 | 1273 |
return new ReachedMap(digraph); |
| 1277 | 1274 |
} |
| 1278 | 1275 |
|
| 1279 | 1276 |
}; |
| 1280 | 1277 |
|
| 1281 | 1278 |
/// \ingroup search |
| 1282 | 1279 |
/// |
| 1283 |
/// \brief |
|
| 1280 |
/// \brief BFS algorithm class with visitor interface. |
|
| 1284 | 1281 |
/// |
| 1285 |
/// This class provides an efficient implementation of the |
|
| 1282 |
/// This class provides an efficient implementation of the BFS algorithm |
|
| 1286 | 1283 |
/// with visitor interface. |
| 1287 | 1284 |
/// |
| 1288 |
/// The |
|
| 1285 |
/// The BfsVisit class provides an alternative interface to the Bfs |
|
| 1289 | 1286 |
/// class. It works with callback mechanism, the BfsVisit object calls |
| 1290 | 1287 |
/// the member functions of the \c Visitor class on every BFS event. |
| 1291 | 1288 |
/// |
| 1292 | 1289 |
/// This interface of the BFS algorithm should be used in special cases |
| 1293 | 1290 |
/// when extra actions have to be performed in connection with certain |
| 1294 | 1291 |
/// events of the BFS algorithm. Otherwise consider to use Bfs or bfs() |
| 1295 | 1292 |
/// instead. |
| 1296 | 1293 |
/// |
| 1297 |
/// \tparam _Digraph The type of the digraph the algorithm runs on. |
|
| 1298 |
/// The default value is |
|
| 1299 |
/// \ref ListDigraph. The value of _Digraph is not used directly by |
|
| 1300 |
/// \ref BfsVisit, it is only passed to \ref BfsVisitDefaultTraits. |
|
| 1301 |
/// \tparam _Visitor The Visitor type that is used by the algorithm. |
|
| 1302 |
/// \ref BfsVisitor "BfsVisitor<_Digraph>" is an empty visitor, which |
|
| 1294 |
/// \tparam GR The type of the digraph the algorithm runs on. |
|
| 1295 |
/// The default type is \ref ListDigraph. |
|
| 1296 |
/// The value of GR is not used directly by \ref BfsVisit, |
|
| 1297 |
/// it is only passed to \ref BfsVisitDefaultTraits. |
|
| 1298 |
/// \tparam VS The Visitor type that is used by the algorithm. |
|
| 1299 |
/// \ref BfsVisitor "BfsVisitor<GR>" is an empty visitor, which |
|
| 1303 | 1300 |
/// does not observe the BFS events. If you want to observe the BFS |
| 1304 | 1301 |
/// events, you should implement your own visitor class. |
| 1305 |
/// \tparam |
|
| 1302 |
/// \tparam TR Traits class to set various data types used by the |
|
| 1306 | 1303 |
/// algorithm. The default traits class is |
| 1307 |
/// \ref BfsVisitDefaultTraits "BfsVisitDefaultTraits< |
|
| 1304 |
/// \ref BfsVisitDefaultTraits "BfsVisitDefaultTraits<GR>". |
|
| 1308 | 1305 |
/// See \ref BfsVisitDefaultTraits for the documentation of |
| 1309 | 1306 |
/// a BFS visit traits class. |
| 1310 | 1307 |
#ifdef DOXYGEN |
| 1311 |
template <typename |
|
| 1308 |
template <typename GR, typename VS, typename TR> |
|
| 1312 | 1309 |
#else |
| 1313 |
template <typename _Digraph = ListDigraph, |
|
| 1314 |
typename _Visitor = BfsVisitor<_Digraph>, |
|
| 1315 |
|
|
| 1310 |
template <typename GR = ListDigraph, |
|
| 1311 |
typename VS = BfsVisitor<GR>, |
|
| 1312 |
typename TR = BfsVisitDefaultTraits<GR> > |
|
| 1316 | 1313 |
#endif |
| 1317 | 1314 |
class BfsVisit {
|
| 1318 | 1315 |
public: |
| 1319 | 1316 |
|
| 1320 | 1317 |
///The traits class. |
| 1321 |
typedef |
|
| 1318 |
typedef TR Traits; |
|
| 1322 | 1319 |
|
| 1323 | 1320 |
///The type of the digraph the algorithm runs on. |
| 1324 | 1321 |
typedef typename Traits::Digraph Digraph; |
| 1325 | 1322 |
|
| 1326 | 1323 |
///The visitor type used by the algorithm. |
| 1327 |
typedef |
|
| 1324 |
typedef VS Visitor; |
|
| 1328 | 1325 |
|
| 1329 | 1326 |
///The type of the map that indicates which nodes are reached. |
| 1330 | 1327 |
typedef typename Traits::ReachedMap ReachedMap; |
| 1331 | 1328 |
|
| 1332 | 1329 |
private: |
| 1333 | 1330 |
|
| 1334 | 1331 |
typedef typename Digraph::Node Node; |
| 1335 | 1332 |
typedef typename Digraph::NodeIt NodeIt; |
| 1336 | 1333 |
typedef typename Digraph::Arc Arc; |
| 1337 | 1334 |
typedef typename Digraph::OutArcIt OutArcIt; |
| 1338 | 1335 |
|
| 1339 | 1336 |
//Pointer to the underlying digraph. |
| 1340 | 1337 |
const Digraph *_digraph; |
| 1341 | 1338 |
//Pointer to the visitor object. |
| 1342 | 1339 |
Visitor *_visitor; |
| 1343 | 1340 |
//Pointer to the map of reached status of the nodes. |
| 1344 | 1341 |
ReachedMap *_reached; |
| 1345 | 1342 |
//Indicates if _reached is locally allocated (true) or not. |
| 1346 | 1343 |
bool local_reached; |
| 1347 | 1344 |
|
| 1348 | 1345 |
std::vector<typename Digraph::Node> _list; |
| 1349 | 1346 |
int _list_front, _list_back; |
| 1350 | 1347 |
|
| 1351 | 1348 |
//Creates the maps if necessary. |
| 1352 | 1349 |
void create_maps() {
|
| 1353 | 1350 |
if(!_reached) {
|
| 1354 | 1351 |
local_reached = true; |
| 1355 | 1352 |
_reached = Traits::createReachedMap(*_digraph); |
| 1356 | 1353 |
} |
| 1357 | 1354 |
} |
| 1358 | 1355 |
|
| 1359 | 1356 |
protected: |
| 1360 | 1357 |
|
| 1361 | 1358 |
BfsVisit() {}
|
| 1362 | 1359 |
|
| 1363 | 1360 |
public: |
| 1364 | 1361 |
|
| 1365 | 1362 |
typedef BfsVisit Create; |
| 1366 | 1363 |
|
| 1367 | 1364 |
/// \name Named Template Parameters |
| 1368 | 1365 |
|
| 1369 | 1366 |
///@{
|
| 1370 | 1367 |
template <class T> |
| 1371 | 1368 |
struct SetReachedMapTraits : public Traits {
|
| 1372 | 1369 |
typedef T ReachedMap; |
| 1373 | 1370 |
static ReachedMap *createReachedMap(const Digraph &digraph) {
|
| 1374 | 1371 |
LEMON_ASSERT(false, "ReachedMap is not initialized"); |
| 1375 | 1372 |
return 0; // ignore warnings |
| 1376 | 1373 |
} |
| 1377 | 1374 |
}; |
| 1378 | 1375 |
/// \brief \ref named-templ-param "Named parameter" for setting |
| 1379 | 1376 |
/// ReachedMap type. |
| 1380 | 1377 |
/// |
| 1381 | 1378 |
/// \ref named-templ-param "Named parameter" for setting ReachedMap type. |
| 1382 | 1379 |
template <class T> |
| 1383 | 1380 |
struct SetReachedMap : public BfsVisit< Digraph, Visitor, |
| 1384 | 1381 |
SetReachedMapTraits<T> > {
|
| 1385 | 1382 |
typedef BfsVisit< Digraph, Visitor, SetReachedMapTraits<T> > Create; |
| 1386 | 1383 |
}; |
| 1387 | 1384 |
///@} |
| 1388 | 1385 |
|
| 1389 | 1386 |
public: |
| 1390 | 1387 |
|
| 1391 | 1388 |
/// \brief Constructor. |
| 1392 | 1389 |
/// |
| 1393 | 1390 |
/// Constructor. |
| 1394 | 1391 |
/// |
| 1395 | 1392 |
/// \param digraph The digraph the algorithm runs on. |
| 1396 | 1393 |
/// \param visitor The visitor object of the algorithm. |
| 1397 | 1394 |
BfsVisit(const Digraph& digraph, Visitor& visitor) |
| 1398 | 1395 |
: _digraph(&digraph), _visitor(&visitor), |
| 1399 | 1396 |
_reached(0), local_reached(false) {}
|
| 1400 | 1397 |
|
| 1401 | 1398 |
/// \brief Destructor. |
| 1402 | 1399 |
~BfsVisit() {
|
| 1403 | 1400 |
if(local_reached) delete _reached; |
| 1404 | 1401 |
} |
| 1405 | 1402 |
|
| 1406 | 1403 |
/// \brief Sets the map that indicates which nodes are reached. |
| 1407 | 1404 |
/// |
| 1408 | 1405 |
/// Sets the map that indicates which nodes are reached. |
| 1409 | 1406 |
/// If you don't use this function before calling \ref run(Node) "run()" |
| 1410 | 1407 |
/// or \ref init(), an instance will be allocated automatically. |
| 1411 | 1408 |
/// The destructor deallocates this automatically allocated map, |
| 1412 | 1409 |
/// of course. |
| 1413 | 1410 |
/// \return <tt> (*this) </tt> |
| 1414 | 1411 |
BfsVisit &reachedMap(ReachedMap &m) {
|
| 1415 | 1412 |
if(local_reached) {
|
| 1416 | 1413 |
delete _reached; |
| 1417 | 1414 |
local_reached = false; |
| 1418 | 1415 |
} |
| 1419 | 1416 |
_reached = &m; |
| 1420 | 1417 |
return *this; |
| 1421 | 1418 |
} |
| 1422 | 1419 |
|
| 1423 | 1420 |
public: |
| 1424 | 1421 |
|
| 1425 | 1422 |
/// \name Execution Control |
| 1426 | 1423 |
/// The simplest way to execute the BFS algorithm is to use one of the |
| 1427 | 1424 |
/// member functions called \ref run(Node) "run()".\n |
| 1428 |
/// If you need more control on the execution, first you have to call |
|
| 1429 |
/// \ref init(), then you can add several source nodes with |
|
| 1425 |
/// If you need better control on the execution, you have to call |
|
| 1426 |
/// \ref init() first, then you can add several source nodes with |
|
| 1430 | 1427 |
/// \ref addSource(). Finally the actual path computation can be |
| 1431 | 1428 |
/// performed with one of the \ref start() functions. |
| 1432 | 1429 |
|
| 1433 | 1430 |
/// @{
|
| 1434 | 1431 |
|
| 1435 | 1432 |
/// \brief Initializes the internal data structures. |
| 1436 | 1433 |
/// |
| 1437 | 1434 |
/// Initializes the internal data structures. |
| 1438 | 1435 |
void init() {
|
| 1439 | 1436 |
create_maps(); |
| 1440 | 1437 |
_list.resize(countNodes(*_digraph)); |
| 1441 | 1438 |
_list_front = _list_back = -1; |
| 1442 | 1439 |
for (NodeIt u(*_digraph) ; u != INVALID ; ++u) {
|
| 1443 | 1440 |
_reached->set(u, false); |
| 1444 | 1441 |
} |
| 1445 | 1442 |
} |
| 1446 | 1443 |
|
| 1447 | 1444 |
/// \brief Adds a new source node. |
| 1448 | 1445 |
/// |
| 1449 | 1446 |
/// Adds a new source node to the set of nodes to be processed. |
| 1450 | 1447 |
void addSource(Node s) {
|
| 1451 | 1448 |
if(!(*_reached)[s]) {
|
| 1452 | 1449 |
_reached->set(s,true); |
| 1453 | 1450 |
_visitor->start(s); |
| 1454 | 1451 |
_visitor->reach(s); |
| 1455 | 1452 |
_list[++_list_back] = s; |
| 1456 | 1453 |
} |
| 1457 | 1454 |
} |
| 1458 | 1455 |
|
| 1459 | 1456 |
/// \brief Processes the next node. |
| 1460 | 1457 |
/// |
| 1461 | 1458 |
/// Processes the next node. |
| 1462 | 1459 |
/// |
| 1463 | 1460 |
/// \return The processed node. |
| 1464 | 1461 |
/// |
| 1465 | 1462 |
/// \pre The queue must not be empty. |
| 1466 | 1463 |
Node processNextNode() {
|
| 1467 | 1464 |
Node n = _list[++_list_front]; |
| 1468 | 1465 |
_visitor->process(n); |
| 1469 | 1466 |
Arc e; |
| 1470 | 1467 |
for (_digraph->firstOut(e, n); e != INVALID; _digraph->nextOut(e)) {
|
| 1471 | 1468 |
Node m = _digraph->target(e); |
| 1472 | 1469 |
if (!(*_reached)[m]) {
|
| 1473 | 1470 |
_visitor->discover(e); |
| 1474 | 1471 |
_visitor->reach(m); |
| 1475 | 1472 |
_reached->set(m, true); |
| 1476 | 1473 |
_list[++_list_back] = m; |
| 1477 | 1474 |
} else {
|
| 1478 | 1475 |
_visitor->examine(e); |
| 1479 | 1476 |
} |
| 1480 | 1477 |
} |
| 1481 | 1478 |
return n; |
| 1482 | 1479 |
} |
| 1483 | 1480 |
|
| 1484 | 1481 |
/// \brief Processes the next node. |
| 1485 | 1482 |
/// |
| 1486 | 1483 |
/// Processes the next node and checks if the given target node |
| 1487 | 1484 |
/// is reached. If the target node is reachable from the processed |
| 1488 | 1485 |
/// node, then the \c reach parameter will be set to \c true. |
| 1489 | 1486 |
/// |
| 1490 | 1487 |
/// \param target The target node. |
| 1491 | 1488 |
/// \retval reach Indicates if the target node is reached. |
| 1492 | 1489 |
/// It should be initially \c false. |
| 1493 | 1490 |
/// |
| 1494 | 1491 |
/// \return The processed node. |
| 1495 | 1492 |
/// |
| 1496 | 1493 |
/// \pre The queue must not be empty. |
| 1497 | 1494 |
Node processNextNode(Node target, bool& reach) {
|
| 1498 | 1495 |
Node n = _list[++_list_front]; |
| 1499 | 1496 |
_visitor->process(n); |
| 1500 | 1497 |
Arc e; |
| 1501 | 1498 |
for (_digraph->firstOut(e, n); e != INVALID; _digraph->nextOut(e)) {
|
| 1502 | 1499 |
Node m = _digraph->target(e); |
| 1503 | 1500 |
if (!(*_reached)[m]) {
|
| 1504 | 1501 |
_visitor->discover(e); |
| 1505 | 1502 |
_visitor->reach(m); |
| 1506 | 1503 |
_reached->set(m, true); |
| 1507 | 1504 |
_list[++_list_back] = m; |
| 1508 | 1505 |
reach = reach || (target == m); |
| 1509 | 1506 |
} else {
|
| 1510 | 1507 |
_visitor->examine(e); |
| 1511 | 1508 |
} |
| 1512 | 1509 |
} |
| 1513 | 1510 |
return n; |
| 1514 | 1511 |
} |
| 1515 | 1512 |
|
| 1516 | 1513 |
/// \brief Processes the next node. |
| 1517 | 1514 |
/// |
| 1518 | 1515 |
/// Processes the next node and checks if at least one of reached |
| 1519 | 1516 |
/// nodes has \c true value in the \c nm node map. If one node |
| 1520 | 1517 |
/// with \c true value is reachable from the processed node, then the |
| 1521 | 1518 |
/// \c rnode parameter will be set to the first of such nodes. |
| 1522 | 1519 |
/// |
| 1523 | 1520 |
/// \param nm A \c bool (or convertible) node map that indicates the |
| 1524 | 1521 |
/// possible targets. |
| 1525 | 1522 |
/// \retval rnode The reached target node. |
| 1526 | 1523 |
/// It should be initially \c INVALID. |
| 1527 | 1524 |
/// |
| 1528 | 1525 |
/// \return The processed node. |
| 1529 | 1526 |
/// |
| 1530 | 1527 |
/// \pre The queue must not be empty. |
| 1531 | 1528 |
template <typename NM> |
| 1532 | 1529 |
Node processNextNode(const NM& nm, Node& rnode) {
|
| 1533 | 1530 |
Node n = _list[++_list_front]; |
| 1534 | 1531 |
_visitor->process(n); |
| 1535 | 1532 |
Arc e; |
| 1536 | 1533 |
for (_digraph->firstOut(e, n); e != INVALID; _digraph->nextOut(e)) {
|
| 1537 | 1534 |
Node m = _digraph->target(e); |
| 1538 | 1535 |
if (!(*_reached)[m]) {
|
| 1539 | 1536 |
_visitor->discover(e); |
| 1540 | 1537 |
_visitor->reach(m); |
| 1541 | 1538 |
_reached->set(m, true); |
| 1542 | 1539 |
_list[++_list_back] = m; |
| 1543 | 1540 |
if (nm[m] && rnode == INVALID) rnode = m; |
| 1544 | 1541 |
} else {
|
| 1545 | 1542 |
_visitor->examine(e); |
| 1546 | 1543 |
} |
| 1547 | 1544 |
} |
| 1548 | 1545 |
return n; |
| 1549 | 1546 |
} |
| 1550 | 1547 |
|
| 1551 | 1548 |
/// \brief The next node to be processed. |
| 1552 | 1549 |
/// |
| 1553 | 1550 |
/// Returns the next node to be processed or \c INVALID if the queue |
| 1554 | 1551 |
/// is empty. |
| 1555 | 1552 |
Node nextNode() const {
|
| 1556 | 1553 |
return _list_front != _list_back ? _list[_list_front + 1] : INVALID; |
| 1557 | 1554 |
} |
| 1558 | 1555 |
|
| 1559 | 1556 |
/// \brief Returns \c false if there are nodes |
| 1560 | 1557 |
/// to be processed. |
| 1561 | 1558 |
/// |
| 1562 | 1559 |
/// Returns \c false if there are nodes |
| 1563 | 1560 |
/// to be processed in the queue. |
| 1564 | 1561 |
bool emptyQueue() const { return _list_front == _list_back; }
|
| 1565 | 1562 |
|
| 1566 | 1563 |
/// \brief Returns the number of the nodes to be processed. |
| 1567 | 1564 |
/// |
| 1568 | 1565 |
/// Returns the number of the nodes to be processed in the queue. |
| 1569 | 1566 |
int queueSize() const { return _list_back - _list_front; }
|
| 1570 | 1567 |
|
| 1571 | 1568 |
/// \brief Executes the algorithm. |
| 1572 | 1569 |
/// |
| 1573 | 1570 |
/// Executes the algorithm. |
| 1574 | 1571 |
/// |
| 1575 | 1572 |
/// This method runs the %BFS algorithm from the root node(s) |
| 1576 | 1573 |
/// in order to compute the shortest path to each node. |
| 1577 | 1574 |
/// |
| 1578 | 1575 |
/// The algorithm computes |
| 1579 | 1576 |
/// - the shortest path tree (forest), |
| 1580 | 1577 |
/// - the distance of each node from the root(s). |
| 1581 | 1578 |
/// |
| 1582 | 1579 |
/// \pre init() must be called and at least one root node should be added |
| 1583 | 1580 |
/// with addSource() before using this function. |
| 1584 | 1581 |
/// |
| 1585 | 1582 |
/// \note <tt>b.start()</tt> is just a shortcut of the following code. |
| 1586 | 1583 |
/// \code |
| 1587 | 1584 |
/// while ( !b.emptyQueue() ) {
|
| 1588 | 1585 |
/// b.processNextNode(); |
| 1589 | 1586 |
/// } |
| 1590 | 1587 |
/// \endcode |
| 1591 | 1588 |
void start() {
|
| 1592 | 1589 |
while ( !emptyQueue() ) processNextNode(); |
| 1593 | 1590 |
} |
| 1594 | 1591 |
|
| 1595 | 1592 |
/// \brief Executes the algorithm until the given target node is reached. |
| 1596 | 1593 |
/// |
| 1597 | 1594 |
/// Executes the algorithm until the given target node is reached. |
| 1598 | 1595 |
/// |
| 1599 | 1596 |
/// This method runs the %BFS algorithm from the root node(s) |
| 1600 | 1597 |
/// in order to compute the shortest path to \c t. |
| 1601 | 1598 |
/// |
| 1602 | 1599 |
/// The algorithm computes |
| 1603 | 1600 |
/// - the shortest path to \c t, |
| 1604 | 1601 |
/// - the distance of \c t from the root(s). |
| 1605 | 1602 |
/// |
| 1606 | 1603 |
/// \pre init() must be called and at least one root node should be |
| 1607 | 1604 |
/// added with addSource() before using this function. |
| 1608 | 1605 |
/// |
| 1609 | 1606 |
/// \note <tt>b.start(t)</tt> is just a shortcut of the following code. |
| 1610 | 1607 |
/// \code |
| 1611 | 1608 |
/// bool reach = false; |
| 1612 | 1609 |
/// while ( !b.emptyQueue() && !reach ) {
|
| 1613 | 1610 |
/// b.processNextNode(t, reach); |
| 1614 | 1611 |
/// } |
| 1615 | 1612 |
/// \endcode |
| 1616 | 1613 |
void start(Node t) {
|
| 1617 | 1614 |
bool reach = false; |
| 1618 | 1615 |
while ( !emptyQueue() && !reach ) processNextNode(t, reach); |
| 1619 | 1616 |
} |
| 1620 | 1617 |
|
| 1621 | 1618 |
/// \brief Executes the algorithm until a condition is met. |
| 1622 | 1619 |
/// |
| 1623 | 1620 |
/// Executes the algorithm until a condition is met. |
| 1624 | 1621 |
/// |
| 1625 | 1622 |
/// This method runs the %BFS algorithm from the root node(s) in |
| 1626 | 1623 |
/// order to compute the shortest path to a node \c v with |
| 1627 | 1624 |
/// <tt>nm[v]</tt> true, if such a node can be found. |
| 1628 | 1625 |
/// |
| 1629 | 1626 |
/// \param nm must be a bool (or convertible) node map. The |
| 1630 | 1627 |
/// algorithm will stop when it reaches a node \c v with |
| 1631 | 1628 |
/// <tt>nm[v]</tt> true. |
| 1632 | 1629 |
/// |
| 1633 | 1630 |
/// \return The reached node \c v with <tt>nm[v]</tt> true or |
| 1634 | 1631 |
/// \c INVALID if no such node was found. |
| 1635 | 1632 |
/// |
| 1636 | 1633 |
/// \pre init() must be called and at least one root node should be |
| 1637 | 1634 |
/// added with addSource() before using this function. |
| 1638 | 1635 |
/// |
| 1639 | 1636 |
/// \note <tt>b.start(nm)</tt> is just a shortcut of the following code. |
| 1640 | 1637 |
/// \code |
| 1641 | 1638 |
/// Node rnode = INVALID; |
| 1642 | 1639 |
/// while ( !b.emptyQueue() && rnode == INVALID ) {
|
| 1643 | 1640 |
/// b.processNextNode(nm, rnode); |
| 1644 | 1641 |
/// } |
| 1645 | 1642 |
/// return rnode; |
| 1646 | 1643 |
/// \endcode |
| 1647 | 1644 |
template <typename NM> |
| 1648 | 1645 |
Node start(const NM &nm) {
|
| 1649 | 1646 |
Node rnode = INVALID; |
| 1650 | 1647 |
while ( !emptyQueue() && rnode == INVALID ) {
|
| 1651 | 1648 |
processNextNode(nm, rnode); |
| 1652 | 1649 |
} |
| 1653 | 1650 |
return rnode; |
| 1654 | 1651 |
} |
| 1655 | 1652 |
|
| 1656 | 1653 |
/// \brief Runs the algorithm from the given source node. |
| 1657 | 1654 |
/// |
| 1658 | 1655 |
/// This method runs the %BFS algorithm from node \c s |
| 1659 | 1656 |
/// in order to compute the shortest path to each node. |
| 1660 | 1657 |
/// |
| 1661 | 1658 |
/// The algorithm computes |
| 1662 | 1659 |
/// - the shortest path tree, |
| 1663 | 1660 |
/// - the distance of each node from the root. |
| 1664 | 1661 |
/// |
| 1665 | 1662 |
/// \note <tt>b.run(s)</tt> is just a shortcut of the following code. |
| 1666 | 1663 |
///\code |
| 1667 | 1664 |
/// b.init(); |
| 1668 | 1665 |
/// b.addSource(s); |
| 1669 | 1666 |
/// b.start(); |
| 1670 | 1667 |
///\endcode |
| 1671 | 1668 |
void run(Node s) {
|
| 1672 | 1669 |
init(); |
| 1673 | 1670 |
addSource(s); |
| 1674 | 1671 |
start(); |
| 1675 | 1672 |
} |
| 1676 | 1673 |
|
| 1677 | 1674 |
/// \brief Finds the shortest path between \c s and \c t. |
| 1678 | 1675 |
/// |
| 1679 | 1676 |
/// This method runs the %BFS algorithm from node \c s |
| 1680 | 1677 |
/// in order to compute the shortest path to node \c t |
| 1681 | 1678 |
/// (it stops searching when \c t is processed). |
| 1682 | 1679 |
/// |
| 1683 | 1680 |
/// \return \c true if \c t is reachable form \c s. |
| 1684 | 1681 |
/// |
| 1685 | 1682 |
/// \note Apart from the return value, <tt>b.run(s,t)</tt> is just a |
| 1686 | 1683 |
/// shortcut of the following code. |
| 1687 | 1684 |
///\code |
| 1688 | 1685 |
/// b.init(); |
| 1689 | 1686 |
/// b.addSource(s); |
| 1690 | 1687 |
/// b.start(t); |
| 1691 | 1688 |
///\endcode |
| 1692 | 1689 |
bool run(Node s,Node t) {
|
| 1693 | 1690 |
init(); |
| 1694 | 1691 |
addSource(s); |
| 1695 | 1692 |
start(t); |
| 1696 | 1693 |
return reached(t); |
| 1697 | 1694 |
} |
| 1698 | 1695 |
|
| 1699 | 1696 |
/// \brief Runs the algorithm to visit all nodes in the digraph. |
| 1700 | 1697 |
/// |
| 1701 | 1698 |
/// This method runs the %BFS algorithm in order to |
| 1702 | 1699 |
/// compute the shortest path to each node. |
| 1703 | 1700 |
/// |
| 1704 | 1701 |
/// The algorithm computes |
| 1705 | 1702 |
/// - the shortest path tree (forest), |
| 1706 | 1703 |
/// - the distance of each node from the root(s). |
| 1707 | 1704 |
/// |
| 1708 | 1705 |
/// \note <tt>b.run(s)</tt> is just a shortcut of the following code. |
| 1709 | 1706 |
///\code |
| 1710 | 1707 |
/// b.init(); |
| 1711 | 1708 |
/// for (NodeIt n(gr); n != INVALID; ++n) {
|
| 1712 | 1709 |
/// if (!b.reached(n)) {
|
| 1713 | 1710 |
/// b.addSource(n); |
| 1714 | 1711 |
/// b.start(); |
| 1715 | 1712 |
/// } |
| 1716 | 1713 |
/// } |
| 1717 | 1714 |
///\endcode |
| 1718 | 1715 |
void run() {
|
| 1719 | 1716 |
init(); |
| 1720 | 1717 |
for (NodeIt it(*_digraph); it != INVALID; ++it) {
|
| 1721 | 1718 |
if (!reached(it)) {
|
| 1722 | 1719 |
addSource(it); |
| 1723 | 1720 |
start(); |
| 1724 | 1721 |
} |
| 1725 | 1722 |
} |
| 1726 | 1723 |
} |
| 1727 | 1724 |
|
| 1728 | 1725 |
///@} |
| 1729 | 1726 |
|
| 1730 | 1727 |
/// \name Query Functions |
| 1731 | 1728 |
/// The results of the BFS algorithm can be obtained using these |
| 1732 | 1729 |
/// functions.\n |
| 1733 | 1730 |
/// Either \ref run(Node) "run()" or \ref start() should be called |
| 1734 | 1731 |
/// before using them. |
| 1735 | 1732 |
|
| 1736 | 1733 |
///@{
|
| 1737 | 1734 |
|
| 1738 |
/// \brief Checks if |
|
| 1735 |
/// \brief Checks if the given node is reached from the root(s). |
|
| 1739 | 1736 |
/// |
| 1740 | 1737 |
/// Returns \c true if \c v is reached from the root(s). |
| 1741 | 1738 |
/// |
| 1742 | 1739 |
/// \pre Either \ref run(Node) "run()" or \ref init() |
| 1743 | 1740 |
/// must be called before using this function. |
| 1744 | 1741 |
bool reached(Node v) const { return (*_reached)[v]; }
|
| 1745 | 1742 |
|
| 1746 | 1743 |
///@} |
| 1747 | 1744 |
|
| 1748 | 1745 |
}; |
| 1749 | 1746 |
|
| 1750 | 1747 |
} //END OF NAMESPACE LEMON |
| 1751 | 1748 |
|
| 1752 | 1749 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_BIN_HEAP_H |
| 20 | 20 |
#define LEMON_BIN_HEAP_H |
| 21 | 21 |
|
| 22 |
///\ingroup |
|
| 22 |
///\ingroup heaps |
|
| 23 | 23 |
///\file |
| 24 |
///\brief Binary |
|
| 24 |
///\brief Binary heap implementation. |
|
| 25 | 25 |
|
| 26 | 26 |
#include <vector> |
| 27 | 27 |
#include <utility> |
| 28 | 28 |
#include <functional> |
| 29 | 29 |
|
| 30 | 30 |
namespace lemon {
|
| 31 | 31 |
|
| 32 |
///\ingroup |
|
| 32 |
/// \ingroup heaps |
|
| 33 | 33 |
/// |
| 34 |
///\brief |
|
| 34 |
/// \brief Binary heap data structure. |
|
| 35 | 35 |
/// |
| 36 |
///This class implements the \e binary \e heap data structure. A \e heap |
|
| 37 |
///is a data structure for storing items with specified values called \e |
|
| 38 |
///priorities in such a way that finding the item with minimum priority is |
|
| 39 |
///efficient. \c Compare specifies the ordering of the priorities. In a heap |
|
| 40 |
/// |
|
| 36 |
/// This class implements the \e binary \e heap data structure. |
|
| 37 |
/// It fully conforms to the \ref concepts::Heap "heap concept". |
|
| 41 | 38 |
/// |
| 42 |
///\tparam _Prio Type of the priority of the items. |
|
| 43 |
///\tparam _ItemIntMap A read and writable Item int map, used internally |
|
| 44 |
///to handle the cross references. |
|
| 45 |
///\tparam _Compare A class for the ordering of the priorities. The |
|
| 46 |
///default is \c std::less<_Prio>. |
|
| 47 |
/// |
|
| 48 |
///\sa FibHeap |
|
| 49 |
///\sa Dijkstra |
|
| 50 |
template <typename _Prio, typename _ItemIntMap, |
|
| 51 |
typename _Compare = std::less<_Prio> > |
|
| 39 |
/// \tparam PR Type of the priorities of the items. |
|
| 40 |
/// \tparam IM A read-writable item map with \c int values, used |
|
| 41 |
/// internally to handle the cross references. |
|
| 42 |
/// \tparam CMP A functor class for comparing the priorities. |
|
| 43 |
/// The default is \c std::less<PR>. |
|
| 44 |
#ifdef DOXYGEN |
|
| 45 |
template <typename PR, typename IM, typename CMP> |
|
| 46 |
#else |
|
| 47 |
template <typename PR, typename IM, typename CMP = std::less<PR> > |
|
| 48 |
#endif |
|
| 52 | 49 |
class BinHeap {
|
| 50 |
public: |
|
| 53 | 51 |
|
| 54 |
public: |
|
| 55 |
///\e |
|
| 56 |
typedef _ItemIntMap ItemIntMap; |
|
| 57 |
///\e |
|
| 58 |
typedef _Prio Prio; |
|
| 59 |
///\e |
|
| 52 |
/// Type of the item-int map. |
|
| 53 |
typedef IM ItemIntMap; |
|
| 54 |
/// Type of the priorities. |
|
| 55 |
typedef PR Prio; |
|
| 56 |
/// Type of the items stored in the heap. |
|
| 60 | 57 |
typedef typename ItemIntMap::Key Item; |
| 61 |
/// |
|
| 58 |
/// Type of the item-priority pairs. |
|
| 62 | 59 |
typedef std::pair<Item,Prio> Pair; |
| 63 |
///\e |
|
| 64 |
typedef _Compare Compare; |
|
| 60 |
/// Functor type for comparing the priorities. |
|
| 61 |
typedef CMP Compare; |
|
| 65 | 62 |
|
| 66 |
/// \brief Type to represent the |
|
| 63 |
/// \brief Type to represent the states of the items. |
|
| 67 | 64 |
/// |
| 68 |
/// Each Item element have a state associated to it. It may be "in heap", |
|
| 69 |
/// "pre heap" or "post heap". The latter two are indifferent from the |
|
| 65 |
/// Each item has a state associated to it. It can be "in heap", |
|
| 66 |
/// "pre-heap" or "post-heap". The latter two are indifferent from the |
|
| 70 | 67 |
/// heap's point of view, but may be useful to the user. |
| 71 | 68 |
/// |
| 72 |
/// The ItemIntMap \e should be initialized in such way that it maps |
|
| 73 |
/// PRE_HEAP (-1) to any element to be put in the heap... |
|
| 69 |
/// The item-int map must be initialized in such way that it assigns |
|
| 70 |
/// \c PRE_HEAP (<tt>-1</tt>) to any element to be put in the heap. |
|
| 74 | 71 |
enum State {
|
| 75 |
IN_HEAP = 0, |
|
| 76 |
PRE_HEAP = -1, |
|
| 77 |
|
|
| 72 |
IN_HEAP = 0, ///< = 0. |
|
| 73 |
PRE_HEAP = -1, ///< = -1. |
|
| 74 |
POST_HEAP = -2 ///< = -2. |
|
| 78 | 75 |
}; |
| 79 | 76 |
|
| 80 | 77 |
private: |
| 81 |
std::vector<Pair> data; |
|
| 82 |
Compare comp; |
|
| 83 |
|
|
| 78 |
std::vector<Pair> _data; |
|
| 79 |
Compare _comp; |
|
| 80 |
ItemIntMap &_iim; |
|
| 84 | 81 |
|
| 85 | 82 |
public: |
| 86 |
|
|
| 83 |
|
|
| 84 |
/// \brief Constructor. |
|
| 87 | 85 |
/// |
| 88 |
/// The constructor. |
|
| 89 |
/// \param _iim should be given to the constructor, since it is used |
|
| 90 |
/// internally to handle the cross references. The value of the map |
|
| 91 |
/// should be PRE_HEAP (-1) for each element. |
|
| 92 |
|
|
| 86 |
/// Constructor. |
|
| 87 |
/// \param map A map that assigns \c int values to the items. |
|
| 88 |
/// It is used internally to handle the cross references. |
|
| 89 |
/// The assigned value must be \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 90 |
explicit BinHeap(ItemIntMap &map) : _iim(map) {}
|
|
| 93 | 91 |
|
| 94 |
/// \brief |
|
| 92 |
/// \brief Constructor. |
|
| 95 | 93 |
/// |
| 96 |
/// The constructor. |
|
| 97 |
/// \param _iim should be given to the constructor, since it is used |
|
| 98 |
/// internally to handle the cross references. The value of the map |
|
| 99 |
/// should be PRE_HEAP (-1) for each element. |
|
| 94 |
/// Constructor. |
|
| 95 |
/// \param map A map that assigns \c int values to the items. |
|
| 96 |
/// It is used internally to handle the cross references. |
|
| 97 |
/// The assigned value must be \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 98 |
/// \param comp The function object used for comparing the priorities. |
|
| 99 |
BinHeap(ItemIntMap &map, const Compare &comp) |
|
| 100 |
: _iim(map), _comp(comp) {}
|
|
| 101 |
|
|
| 102 |
|
|
| 103 |
/// \brief The number of items stored in the heap. |
|
| 100 | 104 |
/// |
| 101 |
/// \param _comp The comparator function object. |
|
| 102 |
BinHeap(ItemIntMap &_iim, const Compare &_comp) |
|
| 103 |
|
|
| 105 |
/// This function returns the number of items stored in the heap. |
|
| 106 |
int size() const { return _data.size(); }
|
|
| 104 | 107 |
|
| 108 |
/// \brief Check if the heap is empty. |
|
| 109 |
/// |
|
| 110 |
/// This function returns \c true if the heap is empty. |
|
| 111 |
bool empty() const { return _data.empty(); }
|
|
| 105 | 112 |
|
| 106 |
/// |
|
| 113 |
/// \brief Make the heap empty. |
|
| 107 | 114 |
/// |
| 108 |
/// \brief Returns the number of items stored in the heap. |
|
| 109 |
int size() const { return data.size(); }
|
|
| 110 |
|
|
| 111 |
/// \brief Checks if the heap stores no items. |
|
| 112 |
/// |
|
| 113 |
/// Returns \c true if and only if the heap stores no items. |
|
| 114 |
bool empty() const { return data.empty(); }
|
|
| 115 |
|
|
| 116 |
/// \brief Make empty this heap. |
|
| 117 |
/// |
|
| 118 |
/// Make empty this heap. It does not change the cross reference map. |
|
| 119 |
/// If you want to reuse what is not surely empty you should first clear |
|
| 120 |
/// the heap and after that you should set the cross reference map for |
|
| 121 |
/// each item to \c PRE_HEAP. |
|
| 115 |
/// This functon makes the heap empty. |
|
| 116 |
/// It does not change the cross reference map. If you want to reuse |
|
| 117 |
/// a heap that is not surely empty, you should first clear it and |
|
| 118 |
/// then you should set the cross reference map to \c PRE_HEAP |
|
| 119 |
/// for each item. |
|
| 122 | 120 |
void clear() {
|
| 123 |
|
|
| 121 |
_data.clear(); |
|
| 124 | 122 |
} |
| 125 | 123 |
|
| 126 | 124 |
private: |
| 127 | 125 |
static int parent(int i) { return (i-1)/2; }
|
| 128 | 126 |
|
| 129 |
static int |
|
| 127 |
static int secondChild(int i) { return 2*i+2; }
|
|
| 130 | 128 |
bool less(const Pair &p1, const Pair &p2) const {
|
| 131 |
return |
|
| 129 |
return _comp(p1.second, p2.second); |
|
| 132 | 130 |
} |
| 133 | 131 |
|
| 134 |
int |
|
| 132 |
int bubbleUp(int hole, Pair p) {
|
|
| 135 | 133 |
int par = parent(hole); |
| 136 |
while( hole>0 && less(p,data[par]) ) {
|
|
| 137 |
move(data[par],hole); |
|
| 134 |
while( hole>0 && less(p,_data[par]) ) {
|
|
| 135 |
move(_data[par],hole); |
|
| 138 | 136 |
hole = par; |
| 139 | 137 |
par = parent(hole); |
| 140 | 138 |
} |
| 141 | 139 |
move(p, hole); |
| 142 | 140 |
return hole; |
| 143 | 141 |
} |
| 144 | 142 |
|
| 145 |
int bubble_down(int hole, Pair p, int length) {
|
|
| 146 |
int child = second_child(hole); |
|
| 143 |
int bubbleDown(int hole, Pair p, int length) {
|
|
| 144 |
int child = secondChild(hole); |
|
| 147 | 145 |
while(child < length) {
|
| 148 |
if( less( |
|
| 146 |
if( less(_data[child-1], _data[child]) ) {
|
|
| 149 | 147 |
--child; |
| 150 | 148 |
} |
| 151 |
if( !less( |
|
| 149 |
if( !less(_data[child], p) ) |
|
| 152 | 150 |
goto ok; |
| 153 |
move( |
|
| 151 |
move(_data[child], hole); |
|
| 154 | 152 |
hole = child; |
| 155 |
child = |
|
| 153 |
child = secondChild(hole); |
|
| 156 | 154 |
} |
| 157 | 155 |
child--; |
| 158 |
if( child<length && less(data[child], p) ) {
|
|
| 159 |
move(data[child], hole); |
|
| 156 |
if( child<length && less(_data[child], p) ) {
|
|
| 157 |
move(_data[child], hole); |
|
| 160 | 158 |
hole=child; |
| 161 | 159 |
} |
| 162 | 160 |
ok: |
| 163 | 161 |
move(p, hole); |
| 164 | 162 |
return hole; |
| 165 | 163 |
} |
| 166 | 164 |
|
| 167 | 165 |
void move(const Pair &p, int i) {
|
| 168 |
data[i] = p; |
|
| 169 |
iim.set(p.first, i); |
|
| 166 |
_data[i] = p; |
|
| 167 |
_iim.set(p.first, i); |
|
| 170 | 168 |
} |
| 171 | 169 |
|
| 172 | 170 |
public: |
| 171 |
|
|
| 173 | 172 |
/// \brief Insert a pair of item and priority into the heap. |
| 174 | 173 |
/// |
| 175 |
/// |
|
| 174 |
/// This function inserts \c p.first to the heap with priority |
|
| 175 |
/// \c p.second. |
|
| 176 | 176 |
/// \param p The pair to insert. |
| 177 |
/// \pre \c p.first must not be stored in the heap. |
|
| 177 | 178 |
void push(const Pair &p) {
|
| 178 |
int n = data.size(); |
|
| 179 |
data.resize(n+1); |
|
| 180 |
|
|
| 179 |
int n = _data.size(); |
|
| 180 |
_data.resize(n+1); |
|
| 181 |
bubbleUp(n, p); |
|
| 181 | 182 |
} |
| 182 | 183 |
|
| 183 |
/// \brief Insert an item into the heap with the given |
|
| 184 |
/// \brief Insert an item into the heap with the given priority. |
|
| 184 | 185 |
/// |
| 185 |
/// |
|
| 186 |
/// This function inserts the given item into the heap with the |
|
| 187 |
/// given priority. |
|
| 186 | 188 |
/// \param i The item to insert. |
| 187 | 189 |
/// \param p The priority of the item. |
| 190 |
/// \pre \e i must not be stored in the heap. |
|
| 188 | 191 |
void push(const Item &i, const Prio &p) { push(Pair(i,p)); }
|
| 189 | 192 |
|
| 190 |
/// \brief |
|
| 193 |
/// \brief Return the item having minimum priority. |
|
| 191 | 194 |
/// |
| 192 |
/// This method returns the item with minimum priority relative to \c |
|
| 193 |
/// Compare. |
|
| 194 |
/// |
|
| 195 |
/// This function returns the item having minimum priority. |
|
| 196 |
/// \pre The heap must be non-empty. |
|
| 195 | 197 |
Item top() const {
|
| 196 |
return |
|
| 198 |
return _data[0].first; |
|
| 197 | 199 |
} |
| 198 | 200 |
|
| 199 |
/// \brief |
|
| 201 |
/// \brief The minimum priority. |
|
| 200 | 202 |
/// |
| 201 |
/// It returns the minimum priority relative to \c Compare. |
|
| 202 |
/// \pre The heap must be nonempty. |
|
| 203 |
/// This function returns the minimum priority. |
|
| 204 |
/// \pre The heap must be non-empty. |
|
| 203 | 205 |
Prio prio() const {
|
| 204 |
return |
|
| 206 |
return _data[0].second; |
|
| 205 | 207 |
} |
| 206 | 208 |
|
| 207 |
/// \brief |
|
| 209 |
/// \brief Remove the item having minimum priority. |
|
| 208 | 210 |
/// |
| 209 |
/// This method deletes the item with minimum priority relative to \c |
|
| 210 |
/// Compare from the heap. |
|
| 211 |
/// This function removes the item having minimum priority. |
|
| 211 | 212 |
/// \pre The heap must be non-empty. |
| 212 | 213 |
void pop() {
|
| 213 |
int n = data.size()-1; |
|
| 214 |
iim.set(data[0].first, POST_HEAP); |
|
| 214 |
int n = _data.size()-1; |
|
| 215 |
_iim.set(_data[0].first, POST_HEAP); |
|
| 215 | 216 |
if (n > 0) {
|
| 216 |
|
|
| 217 |
bubbleDown(0, _data[n], n); |
|
| 217 | 218 |
} |
| 218 |
|
|
| 219 |
_data.pop_back(); |
|
| 219 | 220 |
} |
| 220 | 221 |
|
| 221 |
/// \brief |
|
| 222 |
/// \brief Remove the given item from the heap. |
|
| 222 | 223 |
/// |
| 223 |
/// This method deletes item \c i from the heap. |
|
| 224 |
/// \param i The item to erase. |
|
| 225 |
/// |
|
| 224 |
/// This function removes the given item from the heap if it is |
|
| 225 |
/// already stored. |
|
| 226 |
/// \param i The item to delete. |
|
| 227 |
/// \pre \e i must be in the heap. |
|
| 226 | 228 |
void erase(const Item &i) {
|
| 227 |
int h = iim[i]; |
|
| 228 |
int n = data.size()-1; |
|
| 229 |
|
|
| 229 |
int h = _iim[i]; |
|
| 230 |
int n = _data.size()-1; |
|
| 231 |
_iim.set(_data[h].first, POST_HEAP); |
|
| 230 | 232 |
if( h < n ) {
|
| 231 |
if ( bubble_up(h, data[n]) == h) {
|
|
| 232 |
bubble_down(h, data[n], n); |
|
| 233 |
if ( bubbleUp(h, _data[n]) == h) {
|
|
| 234 |
bubbleDown(h, _data[n], n); |
|
| 233 | 235 |
} |
| 234 | 236 |
} |
| 235 |
|
|
| 237 |
_data.pop_back(); |
|
| 236 | 238 |
} |
| 237 | 239 |
|
| 238 |
|
|
| 239 |
/// \brief Returns the priority of \c i. |
|
| 240 |
/// \brief The priority of the given item. |
|
| 240 | 241 |
/// |
| 241 |
/// This function returns the priority of item \c i. |
|
| 242 |
/// \pre \c i must be in the heap. |
|
| 242 |
/// This function returns the priority of the given item. |
|
| 243 | 243 |
/// \param i The item. |
| 244 |
/// \pre \e i must be in the heap. |
|
| 244 | 245 |
Prio operator[](const Item &i) const {
|
| 245 |
int idx = iim[i]; |
|
| 246 |
return data[idx].second; |
|
| 246 |
int idx = _iim[i]; |
|
| 247 |
return _data[idx].second; |
|
| 247 | 248 |
} |
| 248 | 249 |
|
| 249 |
/// \brief \c i gets to the heap with priority \c p independently |
|
| 250 |
/// if \c i was already there. |
|
| 250 |
/// \brief Set the priority of an item or insert it, if it is |
|
| 251 |
/// not stored in the heap. |
|
| 251 | 252 |
/// |
| 252 |
/// This method calls \ref push(\c i, \c p) if \c i is not stored |
|
| 253 |
/// in the heap and sets the priority of \c i to \c p otherwise. |
|
| 253 |
/// This method sets the priority of the given item if it is |
|
| 254 |
/// already stored in the heap. Otherwise it inserts the given |
|
| 255 |
/// item into the heap with the given priority. |
|
| 254 | 256 |
/// \param i The item. |
| 255 | 257 |
/// \param p The priority. |
| 256 | 258 |
void set(const Item &i, const Prio &p) {
|
| 257 |
int idx = |
|
| 259 |
int idx = _iim[i]; |
|
| 258 | 260 |
if( idx < 0 ) {
|
| 259 | 261 |
push(i,p); |
| 260 | 262 |
} |
| 261 |
else if( comp(p, data[idx].second) ) {
|
|
| 262 |
bubble_up(idx, Pair(i,p)); |
|
| 263 |
else if( _comp(p, _data[idx].second) ) {
|
|
| 264 |
bubbleUp(idx, Pair(i,p)); |
|
| 263 | 265 |
} |
| 264 | 266 |
else {
|
| 265 |
|
|
| 267 |
bubbleDown(idx, Pair(i,p), _data.size()); |
|
| 266 | 268 |
} |
| 267 | 269 |
} |
| 268 | 270 |
|
| 269 |
/// \brief |
|
| 271 |
/// \brief Decrease the priority of an item to the given value. |
|
| 270 | 272 |
/// |
| 271 |
/// This method decreases the priority of item \c i to \c p. |
|
| 272 |
/// \pre \c i must be stored in the heap with priority at least \c |
|
| 273 |
/// |
|
| 273 |
/// This function decreases the priority of an item to the given value. |
|
| 274 | 274 |
/// \param i The item. |
| 275 | 275 |
/// \param p The priority. |
| 276 |
/// \pre \e i must be stored in the heap with priority at least \e p. |
|
| 276 | 277 |
void decrease(const Item &i, const Prio &p) {
|
| 277 |
int idx = iim[i]; |
|
| 278 |
bubble_up(idx, Pair(i,p)); |
|
| 278 |
int idx = _iim[i]; |
|
| 279 |
bubbleUp(idx, Pair(i,p)); |
|
| 279 | 280 |
} |
| 280 | 281 |
|
| 281 |
/// \brief |
|
| 282 |
/// \brief Increase the priority of an item to the given value. |
|
| 282 | 283 |
/// |
| 283 |
/// This method sets the priority of item \c i to \c p. |
|
| 284 |
/// \pre \c i must be stored in the heap with priority at most \c |
|
| 285 |
/// |
|
| 284 |
/// This function increases the priority of an item to the given value. |
|
| 286 | 285 |
/// \param i The item. |
| 287 | 286 |
/// \param p The priority. |
| 287 |
/// \pre \e i must be stored in the heap with priority at most \e p. |
|
| 288 | 288 |
void increase(const Item &i, const Prio &p) {
|
| 289 |
int idx = iim[i]; |
|
| 290 |
bubble_down(idx, Pair(i,p), data.size()); |
|
| 289 |
int idx = _iim[i]; |
|
| 290 |
bubbleDown(idx, Pair(i,p), _data.size()); |
|
| 291 | 291 |
} |
| 292 | 292 |
|
| 293 |
/// \brief Returns if \c item is in, has already been in, or has |
|
| 294 |
/// never been in the heap. |
|
| 293 |
/// \brief Return the state of an item. |
|
| 295 | 294 |
/// |
| 296 |
/// This method returns PRE_HEAP if \c item has never been in the |
|
| 297 |
/// heap, IN_HEAP if it is in the heap at the moment, and POST_HEAP |
|
| 298 |
/// otherwise. In the latter case it is possible that \c item will |
|
| 299 |
/// get back to the heap again. |
|
| 295 |
/// This method returns \c PRE_HEAP if the given item has never |
|
| 296 |
/// been in the heap, \c IN_HEAP if it is in the heap at the moment, |
|
| 297 |
/// and \c POST_HEAP otherwise. |
|
| 298 |
/// In the latter case it is possible that the item will get back |
|
| 299 |
/// to the heap again. |
|
| 300 | 300 |
/// \param i The item. |
| 301 | 301 |
State state(const Item &i) const {
|
| 302 |
int s = |
|
| 302 |
int s = _iim[i]; |
|
| 303 | 303 |
if( s>=0 ) |
| 304 | 304 |
s=0; |
| 305 | 305 |
return State(s); |
| 306 | 306 |
} |
| 307 | 307 |
|
| 308 |
/// \brief |
|
| 308 |
/// \brief Set the state of an item in the heap. |
|
| 309 | 309 |
/// |
| 310 |
/// Sets the state of the \c item in the heap. It can be used to |
|
| 311 |
/// manually clear the heap when it is important to achive the |
|
| 312 |
/// |
|
| 310 |
/// This function sets the state of the given item in the heap. |
|
| 311 |
/// It can be used to manually clear the heap when it is important |
|
| 312 |
/// to achive better time complexity. |
|
| 313 | 313 |
/// \param i The item. |
| 314 | 314 |
/// \param st The state. It should not be \c IN_HEAP. |
| 315 | 315 |
void state(const Item& i, State st) {
|
| 316 | 316 |
switch (st) {
|
| 317 | 317 |
case POST_HEAP: |
| 318 | 318 |
case PRE_HEAP: |
| 319 | 319 |
if (state(i) == IN_HEAP) {
|
| 320 | 320 |
erase(i); |
| 321 | 321 |
} |
| 322 |
|
|
| 322 |
_iim[i] = st; |
|
| 323 | 323 |
break; |
| 324 | 324 |
case IN_HEAP: |
| 325 | 325 |
break; |
| 326 | 326 |
} |
| 327 | 327 |
} |
| 328 | 328 |
|
| 329 |
/// \brief |
|
| 329 |
/// \brief Replace an item in the heap. |
|
| 330 | 330 |
/// |
| 331 |
/// The \c i item is replaced with \c j item. The \c i item should |
|
| 332 |
/// be in the heap, while the \c j should be out of the heap. The |
|
| 333 |
/// \c i item will out of the heap and \c j will be in the heap |
|
| 334 |
/// with the same prioriority as prevoiusly the \c i item. |
|
| 331 |
/// This function replaces item \c i with item \c j. |
|
| 332 |
/// Item \c i must be in the heap, while \c j must be out of the heap. |
|
| 333 |
/// After calling this method, item \c i will be out of the |
|
| 334 |
/// heap and \c j will be in the heap with the same prioriority |
|
| 335 |
/// as item \c i had before. |
|
| 335 | 336 |
void replace(const Item& i, const Item& j) {
|
| 336 |
int idx = iim[i]; |
|
| 337 |
iim.set(i, iim[j]); |
|
| 338 |
iim.set(j, idx); |
|
| 339 |
data[idx].first = j; |
|
| 337 |
int idx = _iim[i]; |
|
| 338 |
_iim.set(i, _iim[j]); |
|
| 339 |
_iim.set(j, idx); |
|
| 340 |
_data[idx].first = j; |
|
| 340 | 341 |
} |
| 341 | 342 |
|
| 342 | 343 |
}; // class BinHeap |
| 343 | 344 |
|
| 344 | 345 |
} // namespace lemon |
| 345 | 346 |
|
| 346 | 347 |
#endif // LEMON_BIN_HEAP_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_BITS_ARRAY_MAP_H |
| 20 | 20 |
#define LEMON_BITS_ARRAY_MAP_H |
| 21 | 21 |
|
| 22 | 22 |
#include <memory> |
| 23 | 23 |
|
| 24 | 24 |
#include <lemon/bits/traits.h> |
| 25 | 25 |
#include <lemon/bits/alteration_notifier.h> |
| 26 | 26 |
#include <lemon/concept_check.h> |
| 27 | 27 |
#include <lemon/concepts/maps.h> |
| 28 | 28 |
|
| 29 | 29 |
// \ingroup graphbits |
| 30 | 30 |
// \file |
| 31 | 31 |
// \brief Graph map based on the array storage. |
| 32 | 32 |
|
| 33 | 33 |
namespace lemon {
|
| 34 | 34 |
|
| 35 | 35 |
// \ingroup graphbits |
| 36 | 36 |
// |
| 37 | 37 |
// \brief Graph map based on the array storage. |
| 38 | 38 |
// |
| 39 | 39 |
// The ArrayMap template class is graph map structure that automatically |
| 40 | 40 |
// updates the map when a key is added to or erased from the graph. |
| 41 | 41 |
// This map uses the allocators to implement the container functionality. |
| 42 | 42 |
// |
| 43 | 43 |
// The template parameters are the Graph, the current Item type and |
| 44 | 44 |
// the Value type of the map. |
| 45 | 45 |
template <typename _Graph, typename _Item, typename _Value> |
| 46 | 46 |
class ArrayMap |
| 47 | 47 |
: public ItemSetTraits<_Graph, _Item>::ItemNotifier::ObserverBase {
|
| 48 | 48 |
public: |
| 49 | 49 |
// The graph type. |
| 50 |
typedef _Graph |
|
| 50 |
typedef _Graph GraphType; |
|
| 51 | 51 |
// The item type. |
| 52 | 52 |
typedef _Item Item; |
| 53 | 53 |
// The reference map tag. |
| 54 | 54 |
typedef True ReferenceMapTag; |
| 55 | 55 |
|
| 56 | 56 |
// The key type of the map. |
| 57 | 57 |
typedef _Item Key; |
| 58 | 58 |
// The value type of the map. |
| 59 | 59 |
typedef _Value Value; |
| 60 | 60 |
|
| 61 | 61 |
// The const reference type of the map. |
| 62 | 62 |
typedef const _Value& ConstReference; |
| 63 | 63 |
// The reference type of the map. |
| 64 | 64 |
typedef _Value& Reference; |
| 65 | 65 |
|
| 66 |
// The map type. |
|
| 67 |
typedef ArrayMap Map; |
|
| 68 |
|
|
| 66 | 69 |
// The notifier type. |
| 67 | 70 |
typedef typename ItemSetTraits<_Graph, _Item>::ItemNotifier Notifier; |
| 68 | 71 |
|
| 72 |
private: |
|
| 73 |
|
|
| 69 | 74 |
// The MapBase of the Map which imlements the core regisitry function. |
| 70 | 75 |
typedef typename Notifier::ObserverBase Parent; |
| 71 | 76 |
|
| 72 |
private: |
|
| 73 | 77 |
typedef std::allocator<Value> Allocator; |
| 74 | 78 |
|
| 75 | 79 |
public: |
| 76 | 80 |
|
| 77 | 81 |
// \brief Graph initialized map constructor. |
| 78 | 82 |
// |
| 79 | 83 |
// Graph initialized map constructor. |
| 80 |
explicit ArrayMap(const |
|
| 84 |
explicit ArrayMap(const GraphType& graph) {
|
|
| 81 | 85 |
Parent::attach(graph.notifier(Item())); |
| 82 | 86 |
allocate_memory(); |
| 83 | 87 |
Notifier* nf = Parent::notifier(); |
| 84 | 88 |
Item it; |
| 85 | 89 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
| 86 | 90 |
int id = nf->id(it);; |
| 87 | 91 |
allocator.construct(&(values[id]), Value()); |
| 88 | 92 |
} |
| 89 | 93 |
} |
| 90 | 94 |
|
| 91 | 95 |
// \brief Constructor to use default value to initialize the map. |
| 92 | 96 |
// |
| 93 | 97 |
// It constructs a map and initialize all of the the map. |
| 94 |
ArrayMap(const |
|
| 98 |
ArrayMap(const GraphType& graph, const Value& value) {
|
|
| 95 | 99 |
Parent::attach(graph.notifier(Item())); |
| 96 | 100 |
allocate_memory(); |
| 97 | 101 |
Notifier* nf = Parent::notifier(); |
| 98 | 102 |
Item it; |
| 99 | 103 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
| 100 | 104 |
int id = nf->id(it);; |
| 101 | 105 |
allocator.construct(&(values[id]), value); |
| 102 | 106 |
} |
| 103 | 107 |
} |
| 104 | 108 |
|
| 105 | 109 |
private: |
| 106 | 110 |
// \brief Constructor to copy a map of the same map type. |
| 107 | 111 |
// |
| 108 | 112 |
// Constructor to copy a map of the same map type. |
| 109 | 113 |
ArrayMap(const ArrayMap& copy) : Parent() {
|
| 110 | 114 |
if (copy.attached()) {
|
| 111 | 115 |
attach(*copy.notifier()); |
| 112 | 116 |
} |
| 113 | 117 |
capacity = copy.capacity; |
| 114 | 118 |
if (capacity == 0) return; |
| 115 | 119 |
values = allocator.allocate(capacity); |
| 116 | 120 |
Notifier* nf = Parent::notifier(); |
| 117 | 121 |
Item it; |
| 118 | 122 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
| 119 | 123 |
int id = nf->id(it);; |
| 120 | 124 |
allocator.construct(&(values[id]), copy.values[id]); |
| 121 | 125 |
} |
| 122 | 126 |
} |
| 123 | 127 |
|
| 124 | 128 |
// \brief Assign operator. |
| 125 | 129 |
// |
| 126 | 130 |
// This operator assigns for each item in the map the |
| 127 | 131 |
// value mapped to the same item in the copied map. |
| 128 | 132 |
// The parameter map should be indiced with the same |
| 129 | 133 |
// itemset because this assign operator does not change |
| 130 | 134 |
// the container of the map. |
| 131 | 135 |
ArrayMap& operator=(const ArrayMap& cmap) {
|
| 132 | 136 |
return operator=<ArrayMap>(cmap); |
| 133 | 137 |
} |
| 134 | 138 |
|
| 135 | 139 |
|
| 136 | 140 |
// \brief Template assign operator. |
| 137 | 141 |
// |
| 138 |
// The given parameter should |
|
| 142 |
// The given parameter should conform to the ReadMap |
|
| 139 | 143 |
// concecpt and could be indiced by the current item set of |
| 140 | 144 |
// the NodeMap. In this case the value for each item |
| 141 | 145 |
// is assigned by the value of the given ReadMap. |
| 142 | 146 |
template <typename CMap> |
| 143 | 147 |
ArrayMap& operator=(const CMap& cmap) {
|
| 144 | 148 |
checkConcept<concepts::ReadMap<Key, _Value>, CMap>(); |
| 145 | 149 |
const typename Parent::Notifier* nf = Parent::notifier(); |
| 146 | 150 |
Item it; |
| 147 | 151 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
| 148 | 152 |
set(it, cmap[it]); |
| 149 | 153 |
} |
| 150 | 154 |
return *this; |
| 151 | 155 |
} |
| 152 | 156 |
|
| 153 | 157 |
public: |
| 154 | 158 |
// \brief The destructor of the map. |
| 155 | 159 |
// |
| 156 | 160 |
// The destructor of the map. |
| 157 | 161 |
virtual ~ArrayMap() {
|
| 158 | 162 |
if (attached()) {
|
| 159 | 163 |
clear(); |
| 160 | 164 |
detach(); |
| 161 | 165 |
} |
| 162 | 166 |
} |
| 163 | 167 |
|
| 164 | 168 |
protected: |
| 165 | 169 |
|
| 166 | 170 |
using Parent::attach; |
| 167 | 171 |
using Parent::detach; |
| 168 | 172 |
using Parent::attached; |
| 169 | 173 |
|
| 170 | 174 |
public: |
| 171 | 175 |
|
| 172 | 176 |
// \brief The subscript operator. |
| 173 | 177 |
// |
| 174 | 178 |
// The subscript operator. The map can be subscripted by the |
| 175 | 179 |
// actual keys of the graph. |
| 176 | 180 |
Value& operator[](const Key& key) {
|
| 177 | 181 |
int id = Parent::notifier()->id(key); |
| 178 | 182 |
return values[id]; |
| 179 | 183 |
} |
| 180 | 184 |
|
| 181 | 185 |
// \brief The const subscript operator. |
| 182 | 186 |
// |
| 183 | 187 |
// The const subscript operator. The map can be subscripted by the |
| 184 | 188 |
// actual keys of the graph. |
| 185 | 189 |
const Value& operator[](const Key& key) const {
|
| 186 | 190 |
int id = Parent::notifier()->id(key); |
| 187 | 191 |
return values[id]; |
| 188 | 192 |
} |
| 189 | 193 |
|
| 190 | 194 |
// \brief Setter function of the map. |
| 191 | 195 |
// |
| 192 | 196 |
// Setter function of the map. Equivalent with map[key] = val. |
| 193 | 197 |
// This is a compatibility feature with the not dereferable maps. |
| 194 | 198 |
void set(const Key& key, const Value& val) {
|
| 195 | 199 |
(*this)[key] = val; |
| 196 | 200 |
} |
| 197 | 201 |
|
| 198 | 202 |
protected: |
| 199 | 203 |
|
| 200 | 204 |
// \brief Adds a new key to the map. |
| 201 | 205 |
// |
| 202 | 206 |
// It adds a new key to the map. It is called by the observer notifier |
| 203 | 207 |
// and it overrides the add() member function of the observer base. |
| 204 | 208 |
virtual void add(const Key& key) {
|
| 205 | 209 |
Notifier* nf = Parent::notifier(); |
| 206 | 210 |
int id = nf->id(key); |
| 207 | 211 |
if (id >= capacity) {
|
| 208 | 212 |
int new_capacity = (capacity == 0 ? 1 : capacity); |
| 209 | 213 |
while (new_capacity <= id) {
|
| 210 | 214 |
new_capacity <<= 1; |
| 211 | 215 |
} |
| 212 | 216 |
Value* new_values = allocator.allocate(new_capacity); |
| 213 | 217 |
Item it; |
| 214 | 218 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
| 215 | 219 |
int jd = nf->id(it);; |
| 216 | 220 |
if (id != jd) {
|
| 217 | 221 |
allocator.construct(&(new_values[jd]), values[jd]); |
| 218 | 222 |
allocator.destroy(&(values[jd])); |
| 219 | 223 |
} |
| 220 | 224 |
} |
| 221 | 225 |
if (capacity != 0) allocator.deallocate(values, capacity); |
| 222 | 226 |
values = new_values; |
| 223 | 227 |
capacity = new_capacity; |
| 224 | 228 |
} |
| 225 | 229 |
allocator.construct(&(values[id]), Value()); |
| 226 | 230 |
} |
| 227 | 231 |
|
| 228 | 232 |
// \brief Adds more new keys to the map. |
| 229 | 233 |
// |
| 230 | 234 |
// It adds more new keys to the map. It is called by the observer notifier |
| 231 | 235 |
// and it overrides the add() member function of the observer base. |
| 232 | 236 |
virtual void add(const std::vector<Key>& keys) {
|
| 233 | 237 |
Notifier* nf = Parent::notifier(); |
| 234 | 238 |
int max_id = -1; |
| 235 | 239 |
for (int i = 0; i < int(keys.size()); ++i) {
|
| 236 | 240 |
int id = nf->id(keys[i]); |
| 237 | 241 |
if (id > max_id) {
|
| 238 | 242 |
max_id = id; |
| 239 | 243 |
} |
| 240 | 244 |
} |
| 241 | 245 |
if (max_id >= capacity) {
|
| 242 | 246 |
int new_capacity = (capacity == 0 ? 1 : capacity); |
| 243 | 247 |
while (new_capacity <= max_id) {
|
| 244 | 248 |
new_capacity <<= 1; |
| 245 | 249 |
} |
| 246 | 250 |
Value* new_values = allocator.allocate(new_capacity); |
| 247 | 251 |
Item it; |
| 248 | 252 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
| 249 | 253 |
int id = nf->id(it); |
| 250 | 254 |
bool found = false; |
| 251 | 255 |
for (int i = 0; i < int(keys.size()); ++i) {
|
| 252 | 256 |
int jd = nf->id(keys[i]); |
| 253 | 257 |
if (id == jd) {
|
| 254 | 258 |
found = true; |
| 255 | 259 |
break; |
| 256 | 260 |
} |
| 257 | 261 |
} |
| 258 | 262 |
if (found) continue; |
| 259 | 263 |
allocator.construct(&(new_values[id]), values[id]); |
| 260 | 264 |
allocator.destroy(&(values[id])); |
| 261 | 265 |
} |
| 262 | 266 |
if (capacity != 0) allocator.deallocate(values, capacity); |
| 263 | 267 |
values = new_values; |
| 264 | 268 |
capacity = new_capacity; |
| 265 | 269 |
} |
| 266 | 270 |
for (int i = 0; i < int(keys.size()); ++i) {
|
| 267 | 271 |
int id = nf->id(keys[i]); |
| 268 | 272 |
allocator.construct(&(values[id]), Value()); |
| 269 | 273 |
} |
| 270 | 274 |
} |
| 271 | 275 |
|
| 272 | 276 |
// \brief Erase a key from the map. |
| 273 | 277 |
// |
| 274 | 278 |
// Erase a key from the map. It is called by the observer notifier |
| 275 | 279 |
// and it overrides the erase() member function of the observer base. |
| 276 | 280 |
virtual void erase(const Key& key) {
|
| 277 | 281 |
int id = Parent::notifier()->id(key); |
| 278 | 282 |
allocator.destroy(&(values[id])); |
| 279 | 283 |
} |
| 280 | 284 |
|
| 281 | 285 |
// \brief Erase more keys from the map. |
| 282 | 286 |
// |
| 283 | 287 |
// Erase more keys from the map. It is called by the observer notifier |
| 284 | 288 |
// and it overrides the erase() member function of the observer base. |
| 285 | 289 |
virtual void erase(const std::vector<Key>& keys) {
|
| 286 | 290 |
for (int i = 0; i < int(keys.size()); ++i) {
|
| 287 | 291 |
int id = Parent::notifier()->id(keys[i]); |
| 288 | 292 |
allocator.destroy(&(values[id])); |
| 289 | 293 |
} |
| 290 | 294 |
} |
| 291 | 295 |
|
| 292 | 296 |
// \brief Builds the map. |
| 293 | 297 |
// |
| 294 | 298 |
// It builds the map. It is called by the observer notifier |
| 295 | 299 |
// and it overrides the build() member function of the observer base. |
| 296 | 300 |
virtual void build() {
|
| 297 | 301 |
Notifier* nf = Parent::notifier(); |
| 298 | 302 |
allocate_memory(); |
| 299 | 303 |
Item it; |
| 300 | 304 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
| 301 | 305 |
int id = nf->id(it);; |
| 302 | 306 |
allocator.construct(&(values[id]), Value()); |
| 303 | 307 |
} |
| 304 | 308 |
} |
| 305 | 309 |
|
| 306 | 310 |
// \brief Clear the map. |
| 307 | 311 |
// |
| 308 | 312 |
// It erase all items from the map. It is called by the observer notifier |
| 309 | 313 |
// and it overrides the clear() member function of the observer base. |
| 310 | 314 |
virtual void clear() {
|
| 311 | 315 |
Notifier* nf = Parent::notifier(); |
| 312 | 316 |
if (capacity != 0) {
|
| 313 | 317 |
Item it; |
| 314 | 318 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
| 315 | 319 |
int id = nf->id(it); |
| 316 | 320 |
allocator.destroy(&(values[id])); |
| 317 | 321 |
} |
| 318 | 322 |
allocator.deallocate(values, capacity); |
| 319 | 323 |
capacity = 0; |
| 320 | 324 |
} |
| 321 | 325 |
} |
| 322 | 326 |
|
| 323 | 327 |
private: |
| 324 | 328 |
|
| 325 | 329 |
void allocate_memory() {
|
| 326 | 330 |
int max_id = Parent::notifier()->maxId(); |
| 327 | 331 |
if (max_id == -1) {
|
| 328 | 332 |
capacity = 0; |
| 329 | 333 |
values = 0; |
| 330 | 334 |
return; |
| 331 | 335 |
} |
| 332 | 336 |
capacity = 1; |
| 333 | 337 |
while (capacity <= max_id) {
|
| 334 | 338 |
capacity <<= 1; |
| 335 | 339 |
} |
| 336 | 340 |
values = allocator.allocate(capacity); |
| 337 | 341 |
} |
| 338 | 342 |
|
| 339 | 343 |
int capacity; |
| 340 | 344 |
Value* values; |
| 341 | 345 |
Allocator allocator; |
| 342 | 346 |
|
| 343 | 347 |
}; |
| 344 | 348 |
|
| 345 | 349 |
} |
| 346 | 350 |
|
| 347 | 351 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_BITS_DEFAULT_MAP_H |
| 20 | 20 |
#define LEMON_BITS_DEFAULT_MAP_H |
| 21 | 21 |
|
| 22 |
#include <lemon/config.h> |
|
| 22 | 23 |
#include <lemon/bits/array_map.h> |
| 23 | 24 |
#include <lemon/bits/vector_map.h> |
| 24 | 25 |
//#include <lemon/bits/debug_map.h> |
| 25 | 26 |
|
| 26 | 27 |
//\ingroup graphbits |
| 27 | 28 |
//\file |
| 28 | 29 |
//\brief Graph maps that construct and destruct their elements dynamically. |
| 29 | 30 |
|
| 30 | 31 |
namespace lemon {
|
| 31 | 32 |
|
| 32 | 33 |
|
| 33 | 34 |
//#ifndef LEMON_USE_DEBUG_MAP |
| 34 | 35 |
|
| 35 | 36 |
template <typename _Graph, typename _Item, typename _Value> |
| 36 | 37 |
struct DefaultMapSelector {
|
| 37 | 38 |
typedef ArrayMap<_Graph, _Item, _Value> Map; |
| 38 | 39 |
}; |
| 39 | 40 |
|
| 40 | 41 |
// bool |
| 41 | 42 |
template <typename _Graph, typename _Item> |
| 42 | 43 |
struct DefaultMapSelector<_Graph, _Item, bool> {
|
| 43 | 44 |
typedef VectorMap<_Graph, _Item, bool> Map; |
| 44 | 45 |
}; |
| 45 | 46 |
|
| 46 | 47 |
// char |
| 47 | 48 |
template <typename _Graph, typename _Item> |
| 48 | 49 |
struct DefaultMapSelector<_Graph, _Item, char> {
|
| 49 | 50 |
typedef VectorMap<_Graph, _Item, char> Map; |
| 50 | 51 |
}; |
| 51 | 52 |
|
| 52 | 53 |
template <typename _Graph, typename _Item> |
| 53 | 54 |
struct DefaultMapSelector<_Graph, _Item, signed char> {
|
| 54 | 55 |
typedef VectorMap<_Graph, _Item, signed char> Map; |
| 55 | 56 |
}; |
| 56 | 57 |
|
| 57 | 58 |
template <typename _Graph, typename _Item> |
| 58 | 59 |
struct DefaultMapSelector<_Graph, _Item, unsigned char> {
|
| 59 | 60 |
typedef VectorMap<_Graph, _Item, unsigned char> Map; |
| 60 | 61 |
}; |
| 61 | 62 |
|
| 62 | 63 |
|
| 63 | 64 |
// int |
| 64 | 65 |
template <typename _Graph, typename _Item> |
| 65 | 66 |
struct DefaultMapSelector<_Graph, _Item, signed int> {
|
| 66 | 67 |
typedef VectorMap<_Graph, _Item, signed int> Map; |
| 67 | 68 |
}; |
| 68 | 69 |
|
| 69 | 70 |
template <typename _Graph, typename _Item> |
| 70 | 71 |
struct DefaultMapSelector<_Graph, _Item, unsigned int> {
|
| 71 | 72 |
typedef VectorMap<_Graph, _Item, unsigned int> Map; |
| 72 | 73 |
}; |
| 73 | 74 |
|
| 74 | 75 |
|
| 75 | 76 |
// short |
| 76 | 77 |
template <typename _Graph, typename _Item> |
| 77 | 78 |
struct DefaultMapSelector<_Graph, _Item, signed short> {
|
| 78 | 79 |
typedef VectorMap<_Graph, _Item, signed short> Map; |
| 79 | 80 |
}; |
| 80 | 81 |
|
| 81 | 82 |
template <typename _Graph, typename _Item> |
| 82 | 83 |
struct DefaultMapSelector<_Graph, _Item, unsigned short> {
|
| 83 | 84 |
typedef VectorMap<_Graph, _Item, unsigned short> Map; |
| 84 | 85 |
}; |
| 85 | 86 |
|
| 86 | 87 |
|
| 87 | 88 |
// long |
| 88 | 89 |
template <typename _Graph, typename _Item> |
| 89 | 90 |
struct DefaultMapSelector<_Graph, _Item, signed long> {
|
| 90 | 91 |
typedef VectorMap<_Graph, _Item, signed long> Map; |
| 91 | 92 |
}; |
| 92 | 93 |
|
| 93 | 94 |
template <typename _Graph, typename _Item> |
| 94 | 95 |
struct DefaultMapSelector<_Graph, _Item, unsigned long> {
|
| 95 | 96 |
typedef VectorMap<_Graph, _Item, unsigned long> Map; |
| 96 | 97 |
}; |
| 97 | 98 |
|
| 98 | 99 |
|
| 99 |
#if defined |
|
| 100 |
#if defined LEMON_HAVE_LONG_LONG |
|
| 100 | 101 |
|
| 101 | 102 |
// long long |
| 102 | 103 |
template <typename _Graph, typename _Item> |
| 103 | 104 |
struct DefaultMapSelector<_Graph, _Item, signed long long> {
|
| 104 | 105 |
typedef VectorMap<_Graph, _Item, signed long long> Map; |
| 105 | 106 |
}; |
| 106 | 107 |
|
| 107 | 108 |
template <typename _Graph, typename _Item> |
| 108 | 109 |
struct DefaultMapSelector<_Graph, _Item, unsigned long long> {
|
| 109 | 110 |
typedef VectorMap<_Graph, _Item, unsigned long long> Map; |
| 110 | 111 |
}; |
| 111 | 112 |
|
| 112 | 113 |
#endif |
| 113 | 114 |
|
| 114 | 115 |
|
| 115 | 116 |
// float |
| 116 | 117 |
template <typename _Graph, typename _Item> |
| 117 | 118 |
struct DefaultMapSelector<_Graph, _Item, float> {
|
| 118 | 119 |
typedef VectorMap<_Graph, _Item, float> Map; |
| 119 | 120 |
}; |
| 120 | 121 |
|
| 121 | 122 |
|
| 122 | 123 |
// double |
| 123 | 124 |
template <typename _Graph, typename _Item> |
| 124 | 125 |
struct DefaultMapSelector<_Graph, _Item, double> {
|
| 125 | 126 |
typedef VectorMap<_Graph, _Item, double> Map; |
| 126 | 127 |
}; |
| 127 | 128 |
|
| 128 | 129 |
|
| 129 | 130 |
// long double |
| 130 | 131 |
template <typename _Graph, typename _Item> |
| 131 | 132 |
struct DefaultMapSelector<_Graph, _Item, long double> {
|
| 132 | 133 |
typedef VectorMap<_Graph, _Item, long double> Map; |
| 133 | 134 |
}; |
| 134 | 135 |
|
| 135 | 136 |
|
| 136 | 137 |
// pointer |
| 137 | 138 |
template <typename _Graph, typename _Item, typename _Ptr> |
| 138 | 139 |
struct DefaultMapSelector<_Graph, _Item, _Ptr*> {
|
| 139 | 140 |
typedef VectorMap<_Graph, _Item, _Ptr*> Map; |
| 140 | 141 |
}; |
| 141 | 142 |
|
| 142 | 143 |
// #else |
| 143 | 144 |
|
| 144 | 145 |
// template <typename _Graph, typename _Item, typename _Value> |
| 145 | 146 |
// struct DefaultMapSelector {
|
| 146 | 147 |
// typedef DebugMap<_Graph, _Item, _Value> Map; |
| 147 | 148 |
// }; |
| 148 | 149 |
|
| 149 | 150 |
// #endif |
| 150 | 151 |
|
| 151 | 152 |
// DefaultMap class |
| 152 | 153 |
template <typename _Graph, typename _Item, typename _Value> |
| 153 | 154 |
class DefaultMap |
| 154 | 155 |
: public DefaultMapSelector<_Graph, _Item, _Value>::Map {
|
| 156 |
typedef typename DefaultMapSelector<_Graph, _Item, _Value>::Map Parent; |
|
| 157 |
|
|
| 155 | 158 |
public: |
| 156 |
typedef typename DefaultMapSelector<_Graph, _Item, _Value>::Map Parent; |
|
| 157 | 159 |
typedef DefaultMap<_Graph, _Item, _Value> Map; |
| 158 |
|
|
| 159 |
typedef typename Parent::Graph Graph; |
|
| 160 |
|
|
| 161 |
typedef typename Parent::GraphType GraphType; |
|
| 160 | 162 |
typedef typename Parent::Value Value; |
| 161 | 163 |
|
| 162 |
explicit DefaultMap(const Graph& graph) : Parent(graph) {}
|
|
| 163 |
DefaultMap(const Graph& graph, const Value& value) |
|
| 164 |
explicit DefaultMap(const GraphType& graph) : Parent(graph) {}
|
|
| 165 |
DefaultMap(const GraphType& graph, const Value& value) |
|
| 164 | 166 |
: Parent(graph, value) {}
|
| 165 | 167 |
|
| 166 | 168 |
DefaultMap& operator=(const DefaultMap& cmap) {
|
| 167 | 169 |
return operator=<DefaultMap>(cmap); |
| 168 | 170 |
} |
| 169 | 171 |
|
| 170 | 172 |
template <typename CMap> |
| 171 | 173 |
DefaultMap& operator=(const CMap& cmap) {
|
| 172 | 174 |
Parent::operator=(cmap); |
| 173 | 175 |
return *this; |
| 174 | 176 |
} |
| 175 | 177 |
|
| 176 | 178 |
}; |
| 177 | 179 |
|
| 178 | 180 |
} |
| 179 | 181 |
|
| 180 | 182 |
#endif |
| 1 | 1 |
/* -*- C++ -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2008 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_BITS_EDGE_SET_EXTENDER_H |
| 20 | 20 |
#define LEMON_BITS_EDGE_SET_EXTENDER_H |
| 21 | 21 |
|
| 22 |
#include <lemon/core.h> |
|
| 22 | 23 |
#include <lemon/error.h> |
| 23 | 24 |
#include <lemon/bits/default_map.h> |
| 25 |
#include <lemon/bits/map_extender.h> |
|
| 24 | 26 |
|
| 25 |
///\ingroup digraphbits |
|
| 26 |
///\file |
|
| 27 |
|
|
| 27 |
//\ingroup digraphbits |
|
| 28 |
//\file |
|
| 29 |
//\brief Extenders for the arc set types |
|
| 28 | 30 |
namespace lemon {
|
| 29 | 31 |
|
| 30 |
/// \ingroup digraphbits |
|
| 31 |
/// |
|
| 32 |
// |
|
| 32 |
// \ingroup digraphbits |
|
| 33 |
// |
|
| 34 |
// \brief Extender for the ArcSets |
|
| 33 | 35 |
template <typename Base> |
| 34 | 36 |
class ArcSetExtender : public Base {
|
| 37 |
typedef Base Parent; |
|
| 38 |
|
|
| 35 | 39 |
public: |
| 36 | 40 |
|
| 37 |
typedef Base Parent; |
|
| 38 | 41 |
typedef ArcSetExtender Digraph; |
| 39 | 42 |
|
| 40 | 43 |
// Base extensions |
| 41 | 44 |
|
| 42 | 45 |
typedef typename Parent::Node Node; |
| 43 | 46 |
typedef typename Parent::Arc Arc; |
| 44 | 47 |
|
| 45 | 48 |
int maxId(Node) const {
|
| 46 | 49 |
return Parent::maxNodeId(); |
| 47 | 50 |
} |
| 48 | 51 |
|
| 49 | 52 |
int maxId(Arc) const {
|
| 50 | 53 |
return Parent::maxArcId(); |
| 51 | 54 |
} |
| 52 | 55 |
|
| 53 | 56 |
Node fromId(int id, Node) const {
|
| 54 | 57 |
return Parent::nodeFromId(id); |
| 55 | 58 |
} |
| 56 | 59 |
|
| 57 | 60 |
Arc fromId(int id, Arc) const {
|
| 58 | 61 |
return Parent::arcFromId(id); |
| 59 | 62 |
} |
| 60 | 63 |
|
| 61 | 64 |
Node oppositeNode(const Node &n, const Arc &e) const {
|
| 62 | 65 |
if (n == Parent::source(e)) |
| 63 | 66 |
return Parent::target(e); |
| 64 | 67 |
else if(n==Parent::target(e)) |
| 65 | 68 |
return Parent::source(e); |
| 66 | 69 |
else |
| 67 | 70 |
return INVALID; |
| 68 | 71 |
} |
| 69 | 72 |
|
| 70 | 73 |
|
| 71 | 74 |
// Alteration notifier extensions |
| 72 | 75 |
|
| 73 |
|
|
| 76 |
// The arc observer registry. |
|
| 74 | 77 |
typedef AlterationNotifier<ArcSetExtender, Arc> ArcNotifier; |
| 75 | 78 |
|
| 76 | 79 |
protected: |
| 77 | 80 |
|
| 78 | 81 |
mutable ArcNotifier arc_notifier; |
| 79 | 82 |
|
| 80 | 83 |
public: |
| 81 | 84 |
|
| 82 | 85 |
using Parent::notifier; |
| 83 | 86 |
|
| 84 |
/// \brief Gives back the arc alteration notifier. |
|
| 85 |
/// |
|
| 86 |
|
|
| 87 |
// Gives back the arc alteration notifier. |
|
| 87 | 88 |
ArcNotifier& notifier(Arc) const {
|
| 88 | 89 |
return arc_notifier; |
| 89 | 90 |
} |
| 90 | 91 |
|
| 91 | 92 |
// Iterable extensions |
| 92 | 93 |
|
| 93 | 94 |
class NodeIt : public Node {
|
| 94 | 95 |
const Digraph* digraph; |
| 95 | 96 |
public: |
| 96 | 97 |
|
| 97 | 98 |
NodeIt() {}
|
| 98 | 99 |
|
| 99 | 100 |
NodeIt(Invalid i) : Node(i) { }
|
| 100 | 101 |
|
| 101 | 102 |
explicit NodeIt(const Digraph& _graph) : digraph(&_graph) {
|
| 102 | 103 |
_graph.first(static_cast<Node&>(*this)); |
| 103 | 104 |
} |
| 104 | 105 |
|
| 105 | 106 |
NodeIt(const Digraph& _graph, const Node& node) |
| 106 | 107 |
: Node(node), digraph(&_graph) {}
|
| 107 | 108 |
|
| 108 | 109 |
NodeIt& operator++() {
|
| 109 | 110 |
digraph->next(*this); |
| 110 | 111 |
return *this; |
| 111 | 112 |
} |
| 112 | 113 |
|
| 113 | 114 |
}; |
| 114 | 115 |
|
| 115 | 116 |
|
| 116 | 117 |
class ArcIt : public Arc {
|
| 117 | 118 |
const Digraph* digraph; |
| 118 | 119 |
public: |
| 119 | 120 |
|
| 120 | 121 |
ArcIt() { }
|
| 121 | 122 |
|
| 122 | 123 |
ArcIt(Invalid i) : Arc(i) { }
|
| 123 | 124 |
|
| 124 | 125 |
explicit ArcIt(const Digraph& _graph) : digraph(&_graph) {
|
| 125 | 126 |
_graph.first(static_cast<Arc&>(*this)); |
| 126 | 127 |
} |
| 127 | 128 |
|
| 128 | 129 |
ArcIt(const Digraph& _graph, const Arc& e) : |
| 129 | 130 |
Arc(e), digraph(&_graph) { }
|
| 130 | 131 |
|
| 131 | 132 |
ArcIt& operator++() {
|
| 132 | 133 |
digraph->next(*this); |
| 133 | 134 |
return *this; |
| 134 | 135 |
} |
| 135 | 136 |
|
| 136 | 137 |
}; |
| 137 | 138 |
|
| 138 | 139 |
|
| 139 | 140 |
class OutArcIt : public Arc {
|
| 140 | 141 |
const Digraph* digraph; |
| 141 | 142 |
public: |
| 142 | 143 |
|
| 143 | 144 |
OutArcIt() { }
|
| 144 | 145 |
|
| 145 | 146 |
OutArcIt(Invalid i) : Arc(i) { }
|
| 146 | 147 |
|
| 147 | 148 |
OutArcIt(const Digraph& _graph, const Node& node) |
| 148 | 149 |
: digraph(&_graph) {
|
| 149 | 150 |
_graph.firstOut(*this, node); |
| 150 | 151 |
} |
| 151 | 152 |
|
| 152 | 153 |
OutArcIt(const Digraph& _graph, const Arc& arc) |
| 153 | 154 |
: Arc(arc), digraph(&_graph) {}
|
| 154 | 155 |
|
| 155 | 156 |
OutArcIt& operator++() {
|
| 156 | 157 |
digraph->nextOut(*this); |
| 157 | 158 |
return *this; |
| 158 | 159 |
} |
| 159 | 160 |
|
| 160 | 161 |
}; |
| 161 | 162 |
|
| 162 | 163 |
|
| 163 | 164 |
class InArcIt : public Arc {
|
| 164 | 165 |
const Digraph* digraph; |
| 165 | 166 |
public: |
| 166 | 167 |
|
| 167 | 168 |
InArcIt() { }
|
| 168 | 169 |
|
| 169 | 170 |
InArcIt(Invalid i) : Arc(i) { }
|
| 170 | 171 |
|
| 171 | 172 |
InArcIt(const Digraph& _graph, const Node& node) |
| 172 | 173 |
: digraph(&_graph) {
|
| 173 | 174 |
_graph.firstIn(*this, node); |
| 174 | 175 |
} |
| 175 | 176 |
|
| 176 | 177 |
InArcIt(const Digraph& _graph, const Arc& arc) : |
| 177 | 178 |
Arc(arc), digraph(&_graph) {}
|
| 178 | 179 |
|
| 179 | 180 |
InArcIt& operator++() {
|
| 180 | 181 |
digraph->nextIn(*this); |
| 181 | 182 |
return *this; |
| 182 | 183 |
} |
| 183 | 184 |
|
| 184 | 185 |
}; |
| 185 | 186 |
|
| 186 |
/// \brief Base node of the iterator |
|
| 187 |
/// |
|
| 188 |
// |
|
| 187 |
// \brief Base node of the iterator |
|
| 188 |
// |
|
| 189 |
// Returns the base node (ie. the source in this case) of the iterator |
|
| 189 | 190 |
Node baseNode(const OutArcIt &e) const {
|
| 190 | 191 |
return Parent::source(static_cast<const Arc&>(e)); |
| 191 | 192 |
} |
| 192 |
/// \brief Running node of the iterator |
|
| 193 |
/// |
|
| 194 |
/// Returns the running node (ie. the target in this case) of the |
|
| 195 |
/// iterator |
|
| 193 |
// \brief Running node of the iterator |
|
| 194 |
// |
|
| 195 |
// Returns the running node (ie. the target in this case) of the |
|
| 196 |
// iterator |
|
| 196 | 197 |
Node runningNode(const OutArcIt &e) const {
|
| 197 | 198 |
return Parent::target(static_cast<const Arc&>(e)); |
| 198 | 199 |
} |
| 199 | 200 |
|
| 200 |
/// \brief Base node of the iterator |
|
| 201 |
/// |
|
| 202 |
// |
|
| 201 |
// \brief Base node of the iterator |
|
| 202 |
// |
|
| 203 |
// Returns the base node (ie. the target in this case) of the iterator |
|
| 203 | 204 |
Node baseNode(const InArcIt &e) const {
|
| 204 | 205 |
return Parent::target(static_cast<const Arc&>(e)); |
| 205 | 206 |
} |
| 206 |
/// \brief Running node of the iterator |
|
| 207 |
/// |
|
| 208 |
/// Returns the running node (ie. the source in this case) of the |
|
| 209 |
/// iterator |
|
| 207 |
// \brief Running node of the iterator |
|
| 208 |
// |
|
| 209 |
// Returns the running node (ie. the source in this case) of the |
|
| 210 |
// iterator |
|
| 210 | 211 |
Node runningNode(const InArcIt &e) const {
|
| 211 | 212 |
return Parent::source(static_cast<const Arc&>(e)); |
| 212 | 213 |
} |
| 213 | 214 |
|
| 214 | 215 |
using Parent::first; |
| 215 | 216 |
|
| 216 | 217 |
// Mappable extension |
| 217 | 218 |
|
| 218 | 219 |
template <typename _Value> |
| 219 | 220 |
class ArcMap |
| 220 | 221 |
: public MapExtender<DefaultMap<Digraph, Arc, _Value> > {
|
| 221 |
public: |
|
| 222 |
typedef ArcSetExtender Digraph; |
|
| 223 | 222 |
typedef MapExtender<DefaultMap<Digraph, Arc, _Value> > Parent; |
| 224 | 223 |
|
| 224 |
public: |
|
| 225 | 225 |
explicit ArcMap(const Digraph& _g) |
| 226 | 226 |
: Parent(_g) {}
|
| 227 | 227 |
ArcMap(const Digraph& _g, const _Value& _v) |
| 228 | 228 |
: Parent(_g, _v) {}
|
| 229 | 229 |
|
| 230 | 230 |
ArcMap& operator=(const ArcMap& cmap) {
|
| 231 | 231 |
return operator=<ArcMap>(cmap); |
| 232 | 232 |
} |
| 233 | 233 |
|
| 234 | 234 |
template <typename CMap> |
| 235 | 235 |
ArcMap& operator=(const CMap& cmap) {
|
| 236 | 236 |
Parent::operator=(cmap); |
| 237 | 237 |
return *this; |
| 238 | 238 |
} |
| 239 | 239 |
|
| 240 | 240 |
}; |
| 241 | 241 |
|
| 242 | 242 |
|
| 243 | 243 |
// Alteration extension |
| 244 | 244 |
|
| 245 | 245 |
Arc addArc(const Node& from, const Node& to) {
|
| 246 | 246 |
Arc arc = Parent::addArc(from, to); |
| 247 | 247 |
notifier(Arc()).add(arc); |
| 248 | 248 |
return arc; |
| 249 | 249 |
} |
| 250 | 250 |
|
| 251 | 251 |
void clear() {
|
| 252 | 252 |
notifier(Arc()).clear(); |
| 253 | 253 |
Parent::clear(); |
| 254 | 254 |
} |
| 255 | 255 |
|
| 256 | 256 |
void erase(const Arc& arc) {
|
| 257 | 257 |
notifier(Arc()).erase(arc); |
| 258 | 258 |
Parent::erase(arc); |
| 259 | 259 |
} |
| 260 | 260 |
|
| 261 | 261 |
ArcSetExtender() {
|
| 262 | 262 |
arc_notifier.setContainer(*this); |
| 263 | 263 |
} |
| 264 | 264 |
|
| 265 | 265 |
~ArcSetExtender() {
|
| 266 | 266 |
arc_notifier.clear(); |
| 267 | 267 |
} |
| 268 | 268 |
|
| 269 | 269 |
}; |
| 270 | 270 |
|
| 271 | 271 |
|
| 272 |
/// \ingroup digraphbits |
|
| 273 |
/// |
|
| 274 |
// |
|
| 272 |
// \ingroup digraphbits |
|
| 273 |
// |
|
| 274 |
// \brief Extender for the EdgeSets |
|
| 275 | 275 |
template <typename Base> |
| 276 | 276 |
class EdgeSetExtender : public Base {
|
| 277 |
typedef Base Parent; |
|
| 277 | 278 |
|
| 278 | 279 |
public: |
| 279 | 280 |
|
| 280 |
typedef Base Parent; |
|
| 281 |
typedef EdgeSetExtender Digraph; |
|
| 281 |
typedef EdgeSetExtender Graph; |
|
| 282 | 282 |
|
| 283 | 283 |
typedef typename Parent::Node Node; |
| 284 | 284 |
typedef typename Parent::Arc Arc; |
| 285 | 285 |
typedef typename Parent::Edge Edge; |
| 286 | 286 |
|
| 287 |
|
|
| 288 | 287 |
int maxId(Node) const {
|
| 289 | 288 |
return Parent::maxNodeId(); |
| 290 | 289 |
} |
| 291 | 290 |
|
| 292 | 291 |
int maxId(Arc) const {
|
| 293 | 292 |
return Parent::maxArcId(); |
| 294 | 293 |
} |
| 295 | 294 |
|
| 296 | 295 |
int maxId(Edge) const {
|
| 297 | 296 |
return Parent::maxEdgeId(); |
| 298 | 297 |
} |
| 299 | 298 |
|
| 300 | 299 |
Node fromId(int id, Node) const {
|
| 301 | 300 |
return Parent::nodeFromId(id); |
| 302 | 301 |
} |
| 303 | 302 |
|
| 304 | 303 |
Arc fromId(int id, Arc) const {
|
| 305 | 304 |
return Parent::arcFromId(id); |
| 306 | 305 |
} |
| 307 | 306 |
|
| 308 | 307 |
Edge fromId(int id, Edge) const {
|
| 309 | 308 |
return Parent::edgeFromId(id); |
| 310 | 309 |
} |
| 311 | 310 |
|
| 312 | 311 |
Node oppositeNode(const Node &n, const Edge &e) const {
|
| 313 | 312 |
if( n == Parent::u(e)) |
| 314 | 313 |
return Parent::v(e); |
| 315 | 314 |
else if( n == Parent::v(e)) |
| 316 | 315 |
return Parent::u(e); |
| 317 | 316 |
else |
| 318 | 317 |
return INVALID; |
| 319 | 318 |
} |
| 320 | 319 |
|
| 321 | 320 |
Arc oppositeArc(const Arc &e) const {
|
| 322 | 321 |
return Parent::direct(e, !Parent::direction(e)); |
| 323 | 322 |
} |
| 324 | 323 |
|
| 325 | 324 |
using Parent::direct; |
| 326 | 325 |
Arc direct(const Edge &e, const Node &s) const {
|
| 327 | 326 |
return Parent::direct(e, Parent::u(e) == s); |
| 328 | 327 |
} |
| 329 | 328 |
|
| 330 | 329 |
typedef AlterationNotifier<EdgeSetExtender, Arc> ArcNotifier; |
| 331 | 330 |
typedef AlterationNotifier<EdgeSetExtender, Edge> EdgeNotifier; |
| 332 | 331 |
|
| 333 | 332 |
|
| 334 | 333 |
protected: |
| 335 | 334 |
|
| 336 | 335 |
mutable ArcNotifier arc_notifier; |
| 337 | 336 |
mutable EdgeNotifier edge_notifier; |
| 338 | 337 |
|
| 339 | 338 |
public: |
| 340 | 339 |
|
| 341 | 340 |
using Parent::notifier; |
| 342 | 341 |
|
| 343 | 342 |
ArcNotifier& notifier(Arc) const {
|
| 344 | 343 |
return arc_notifier; |
| 345 | 344 |
} |
| 346 | 345 |
|
| 347 | 346 |
EdgeNotifier& notifier(Edge) const {
|
| 348 | 347 |
return edge_notifier; |
| 349 | 348 |
} |
| 350 | 349 |
|
| 351 | 350 |
|
| 352 | 351 |
class NodeIt : public Node {
|
| 353 |
const |
|
| 352 |
const Graph* graph; |
|
| 354 | 353 |
public: |
| 355 | 354 |
|
| 356 | 355 |
NodeIt() {}
|
| 357 | 356 |
|
| 358 | 357 |
NodeIt(Invalid i) : Node(i) { }
|
| 359 | 358 |
|
| 360 |
explicit NodeIt(const |
|
| 359 |
explicit NodeIt(const Graph& _graph) : graph(&_graph) {
|
|
| 361 | 360 |
_graph.first(static_cast<Node&>(*this)); |
| 362 | 361 |
} |
| 363 | 362 |
|
| 364 |
NodeIt(const Digraph& _graph, const Node& node) |
|
| 365 |
: Node(node), digraph(&_graph) {}
|
|
| 363 |
NodeIt(const Graph& _graph, const Node& node) |
|
| 364 |
: Node(node), graph(&_graph) {}
|
|
| 366 | 365 |
|
| 367 | 366 |
NodeIt& operator++() {
|
| 368 |
|
|
| 367 |
graph->next(*this); |
|
| 369 | 368 |
return *this; |
| 370 | 369 |
} |
| 371 | 370 |
|
| 372 | 371 |
}; |
| 373 | 372 |
|
| 374 | 373 |
|
| 375 | 374 |
class ArcIt : public Arc {
|
| 376 |
const |
|
| 375 |
const Graph* graph; |
|
| 377 | 376 |
public: |
| 378 | 377 |
|
| 379 | 378 |
ArcIt() { }
|
| 380 | 379 |
|
| 381 | 380 |
ArcIt(Invalid i) : Arc(i) { }
|
| 382 | 381 |
|
| 383 |
explicit ArcIt(const |
|
| 382 |
explicit ArcIt(const Graph& _graph) : graph(&_graph) {
|
|
| 384 | 383 |
_graph.first(static_cast<Arc&>(*this)); |
| 385 | 384 |
} |
| 386 | 385 |
|
| 387 |
ArcIt(const Digraph& _graph, const Arc& e) : |
|
| 388 |
Arc(e), digraph(&_graph) { }
|
|
| 386 |
ArcIt(const Graph& _graph, const Arc& e) : |
|
| 387 |
Arc(e), graph(&_graph) { }
|
|
| 389 | 388 |
|
| 390 | 389 |
ArcIt& operator++() {
|
| 391 |
|
|
| 390 |
graph->next(*this); |
|
| 392 | 391 |
return *this; |
| 393 | 392 |
} |
| 394 | 393 |
|
| 395 | 394 |
}; |
| 396 | 395 |
|
| 397 | 396 |
|
| 398 | 397 |
class OutArcIt : public Arc {
|
| 399 |
const |
|
| 398 |
const Graph* graph; |
|
| 400 | 399 |
public: |
| 401 | 400 |
|
| 402 | 401 |
OutArcIt() { }
|
| 403 | 402 |
|
| 404 | 403 |
OutArcIt(Invalid i) : Arc(i) { }
|
| 405 | 404 |
|
| 406 |
OutArcIt(const Digraph& _graph, const Node& node) |
|
| 407 |
: digraph(&_graph) {
|
|
| 405 |
OutArcIt(const Graph& _graph, const Node& node) |
|
| 406 |
: graph(&_graph) {
|
|
| 408 | 407 |
_graph.firstOut(*this, node); |
| 409 | 408 |
} |
| 410 | 409 |
|
| 411 |
OutArcIt(const Digraph& _graph, const Arc& arc) |
|
| 412 |
: Arc(arc), digraph(&_graph) {}
|
|
| 410 |
OutArcIt(const Graph& _graph, const Arc& arc) |
|
| 411 |
: Arc(arc), graph(&_graph) {}
|
|
| 413 | 412 |
|
| 414 | 413 |
OutArcIt& operator++() {
|
| 415 |
|
|
| 414 |
graph->nextOut(*this); |
|
| 416 | 415 |
return *this; |
| 417 | 416 |
} |
| 418 | 417 |
|
| 419 | 418 |
}; |
| 420 | 419 |
|
| 421 | 420 |
|
| 422 | 421 |
class InArcIt : public Arc {
|
| 423 |
const |
|
| 422 |
const Graph* graph; |
|
| 424 | 423 |
public: |
| 425 | 424 |
|
| 426 | 425 |
InArcIt() { }
|
| 427 | 426 |
|
| 428 | 427 |
InArcIt(Invalid i) : Arc(i) { }
|
| 429 | 428 |
|
| 430 |
InArcIt(const Digraph& _graph, const Node& node) |
|
| 431 |
: digraph(&_graph) {
|
|
| 429 |
InArcIt(const Graph& _graph, const Node& node) |
|
| 430 |
: graph(&_graph) {
|
|
| 432 | 431 |
_graph.firstIn(*this, node); |
| 433 | 432 |
} |
| 434 | 433 |
|
| 435 |
InArcIt(const Digraph& _graph, const Arc& arc) : |
|
| 436 |
Arc(arc), digraph(&_graph) {}
|
|
| 434 |
InArcIt(const Graph& _graph, const Arc& arc) : |
|
| 435 |
Arc(arc), graph(&_graph) {}
|
|
| 437 | 436 |
|
| 438 | 437 |
InArcIt& operator++() {
|
| 439 |
|
|
| 438 |
graph->nextIn(*this); |
|
| 440 | 439 |
return *this; |
| 441 | 440 |
} |
| 442 | 441 |
|
| 443 | 442 |
}; |
| 444 | 443 |
|
| 445 | 444 |
|
| 446 | 445 |
class EdgeIt : public Parent::Edge {
|
| 447 |
const |
|
| 446 |
const Graph* graph; |
|
| 448 | 447 |
public: |
| 449 | 448 |
|
| 450 | 449 |
EdgeIt() { }
|
| 451 | 450 |
|
| 452 | 451 |
EdgeIt(Invalid i) : Edge(i) { }
|
| 453 | 452 |
|
| 454 |
explicit EdgeIt(const |
|
| 453 |
explicit EdgeIt(const Graph& _graph) : graph(&_graph) {
|
|
| 455 | 454 |
_graph.first(static_cast<Edge&>(*this)); |
| 456 | 455 |
} |
| 457 | 456 |
|
| 458 |
EdgeIt(const Digraph& _graph, const Edge& e) : |
|
| 459 |
Edge(e), digraph(&_graph) { }
|
|
| 457 |
EdgeIt(const Graph& _graph, const Edge& e) : |
|
| 458 |
Edge(e), graph(&_graph) { }
|
|
| 460 | 459 |
|
| 461 | 460 |
EdgeIt& operator++() {
|
| 462 |
|
|
| 461 |
graph->next(*this); |
|
| 463 | 462 |
return *this; |
| 464 | 463 |
} |
| 465 | 464 |
|
| 466 | 465 |
}; |
| 467 | 466 |
|
| 468 | 467 |
class IncEdgeIt : public Parent::Edge {
|
| 469 | 468 |
friend class EdgeSetExtender; |
| 470 |
const |
|
| 469 |
const Graph* graph; |
|
| 471 | 470 |
bool direction; |
| 472 | 471 |
public: |
| 473 | 472 |
|
| 474 | 473 |
IncEdgeIt() { }
|
| 475 | 474 |
|
| 476 | 475 |
IncEdgeIt(Invalid i) : Edge(i), direction(false) { }
|
| 477 | 476 |
|
| 478 |
IncEdgeIt(const |
|
| 477 |
IncEdgeIt(const Graph& _graph, const Node &n) : graph(&_graph) {
|
|
| 479 | 478 |
_graph.firstInc(*this, direction, n); |
| 480 | 479 |
} |
| 481 | 480 |
|
| 482 |
IncEdgeIt(const Digraph& _graph, const Edge &ue, const Node &n) |
|
| 483 |
: digraph(&_graph), Edge(ue) {
|
|
| 481 |
IncEdgeIt(const Graph& _graph, const Edge &ue, const Node &n) |
|
| 482 |
: graph(&_graph), Edge(ue) {
|
|
| 484 | 483 |
direction = (_graph.source(ue) == n); |
| 485 | 484 |
} |
| 486 | 485 |
|
| 487 | 486 |
IncEdgeIt& operator++() {
|
| 488 |
|
|
| 487 |
graph->nextInc(*this, direction); |
|
| 489 | 488 |
return *this; |
| 490 | 489 |
} |
| 491 | 490 |
}; |
| 492 | 491 |
|
| 493 |
/// \brief Base node of the iterator |
|
| 494 |
/// |
|
| 495 |
// |
|
| 492 |
// \brief Base node of the iterator |
|
| 493 |
// |
|
| 494 |
// Returns the base node (ie. the source in this case) of the iterator |
|
| 496 | 495 |
Node baseNode(const OutArcIt &e) const {
|
| 497 | 496 |
return Parent::source(static_cast<const Arc&>(e)); |
| 498 | 497 |
} |
| 499 |
/// \brief Running node of the iterator |
|
| 500 |
/// |
|
| 501 |
/// Returns the running node (ie. the target in this case) of the |
|
| 502 |
/// iterator |
|
| 498 |
// \brief Running node of the iterator |
|
| 499 |
// |
|
| 500 |
// Returns the running node (ie. the target in this case) of the |
|
| 501 |
// iterator |
|
| 503 | 502 |
Node runningNode(const OutArcIt &e) const {
|
| 504 | 503 |
return Parent::target(static_cast<const Arc&>(e)); |
| 505 | 504 |
} |
| 506 | 505 |
|
| 507 |
/// \brief Base node of the iterator |
|
| 508 |
/// |
|
| 509 |
// |
|
| 506 |
// \brief Base node of the iterator |
|
| 507 |
// |
|
| 508 |
// Returns the base node (ie. the target in this case) of the iterator |
|
| 510 | 509 |
Node baseNode(const InArcIt &e) const {
|
| 511 | 510 |
return Parent::target(static_cast<const Arc&>(e)); |
| 512 | 511 |
} |
| 513 |
/// \brief Running node of the iterator |
|
| 514 |
/// |
|
| 515 |
/// Returns the running node (ie. the source in this case) of the |
|
| 516 |
/// iterator |
|
| 512 |
// \brief Running node of the iterator |
|
| 513 |
// |
|
| 514 |
// Returns the running node (ie. the source in this case) of the |
|
| 515 |
// iterator |
|
| 517 | 516 |
Node runningNode(const InArcIt &e) const {
|
| 518 | 517 |
return Parent::source(static_cast<const Arc&>(e)); |
| 519 | 518 |
} |
| 520 | 519 |
|
| 521 |
/// Base node of the iterator |
|
| 522 |
/// |
|
| 523 |
// |
|
| 520 |
// Base node of the iterator |
|
| 521 |
// |
|
| 522 |
// Returns the base node of the iterator |
|
| 524 | 523 |
Node baseNode(const IncEdgeIt &e) const {
|
| 525 | 524 |
return e.direction ? u(e) : v(e); |
| 526 | 525 |
} |
| 527 |
/// Running node of the iterator |
|
| 528 |
/// |
|
| 529 |
// |
|
| 526 |
// Running node of the iterator |
|
| 527 |
// |
|
| 528 |
// Returns the running node of the iterator |
|
| 530 | 529 |
Node runningNode(const IncEdgeIt &e) const {
|
| 531 | 530 |
return e.direction ? v(e) : u(e); |
| 532 | 531 |
} |
| 533 | 532 |
|
| 534 | 533 |
|
| 535 | 534 |
template <typename _Value> |
| 536 | 535 |
class ArcMap |
| 537 |
: public MapExtender<DefaultMap< |
|
| 536 |
: public MapExtender<DefaultMap<Graph, Arc, _Value> > {
|
|
| 537 |
typedef MapExtender<DefaultMap<Graph, Arc, _Value> > Parent; |
|
| 538 |
|
|
| 538 | 539 |
public: |
| 539 |
typedef EdgeSetExtender Digraph; |
|
| 540 |
typedef MapExtender<DefaultMap<Digraph, Arc, _Value> > Parent; |
|
| 541 |
|
|
| 542 |
ArcMap(const Digraph& _g) |
|
| 540 |
explicit ArcMap(const Graph& _g) |
|
| 543 | 541 |
: Parent(_g) {}
|
| 544 |
ArcMap(const |
|
| 542 |
ArcMap(const Graph& _g, const _Value& _v) |
|
| 545 | 543 |
: Parent(_g, _v) {}
|
| 546 | 544 |
|
| 547 | 545 |
ArcMap& operator=(const ArcMap& cmap) {
|
| 548 | 546 |
return operator=<ArcMap>(cmap); |
| 549 | 547 |
} |
| 550 | 548 |
|
| 551 | 549 |
template <typename CMap> |
| 552 | 550 |
ArcMap& operator=(const CMap& cmap) {
|
| 553 | 551 |
Parent::operator=(cmap); |
| 554 | 552 |
return *this; |
| 555 | 553 |
} |
| 556 | 554 |
|
| 557 | 555 |
}; |
| 558 | 556 |
|
| 559 | 557 |
|
| 560 | 558 |
template <typename _Value> |
| 561 | 559 |
class EdgeMap |
| 562 |
: public MapExtender<DefaultMap< |
|
| 560 |
: public MapExtender<DefaultMap<Graph, Edge, _Value> > {
|
|
| 561 |
typedef MapExtender<DefaultMap<Graph, Edge, _Value> > Parent; |
|
| 562 |
|
|
| 563 | 563 |
public: |
| 564 |
typedef EdgeSetExtender Digraph; |
|
| 565 |
typedef MapExtender<DefaultMap<Digraph, Edge, _Value> > Parent; |
|
| 566 |
|
|
| 567 |
EdgeMap(const Digraph& _g) |
|
| 564 |
explicit EdgeMap(const Graph& _g) |
|
| 568 | 565 |
: Parent(_g) {}
|
| 569 | 566 |
|
| 570 |
EdgeMap(const |
|
| 567 |
EdgeMap(const Graph& _g, const _Value& _v) |
|
| 571 | 568 |
: Parent(_g, _v) {}
|
| 572 | 569 |
|
| 573 | 570 |
EdgeMap& operator=(const EdgeMap& cmap) {
|
| 574 | 571 |
return operator=<EdgeMap>(cmap); |
| 575 | 572 |
} |
| 576 | 573 |
|
| 577 | 574 |
template <typename CMap> |
| 578 | 575 |
EdgeMap& operator=(const CMap& cmap) {
|
| 579 | 576 |
Parent::operator=(cmap); |
| 580 | 577 |
return *this; |
| 581 | 578 |
} |
| 582 | 579 |
|
| 583 | 580 |
}; |
| 584 | 581 |
|
| 585 | 582 |
|
| 586 | 583 |
// Alteration extension |
| 587 | 584 |
|
| 588 | 585 |
Edge addEdge(const Node& from, const Node& to) {
|
| 589 | 586 |
Edge edge = Parent::addEdge(from, to); |
| 590 | 587 |
notifier(Edge()).add(edge); |
| 591 | 588 |
std::vector<Arc> arcs; |
| 592 | 589 |
arcs.push_back(Parent::direct(edge, true)); |
| 593 | 590 |
arcs.push_back(Parent::direct(edge, false)); |
| 594 | 591 |
notifier(Arc()).add(arcs); |
| 595 | 592 |
return edge; |
| 596 | 593 |
} |
| 597 | 594 |
|
| 598 | 595 |
void clear() {
|
| 599 | 596 |
notifier(Arc()).clear(); |
| 600 | 597 |
notifier(Edge()).clear(); |
| 601 | 598 |
Parent::clear(); |
| 602 | 599 |
} |
| 603 | 600 |
|
| 604 | 601 |
void erase(const Edge& edge) {
|
| 605 | 602 |
std::vector<Arc> arcs; |
| 606 | 603 |
arcs.push_back(Parent::direct(edge, true)); |
| 607 | 604 |
arcs.push_back(Parent::direct(edge, false)); |
| 608 | 605 |
notifier(Arc()).erase(arcs); |
| 609 | 606 |
notifier(Edge()).erase(edge); |
| 610 | 607 |
Parent::erase(edge); |
| 611 | 608 |
} |
| 612 | 609 |
|
| 613 | 610 |
|
| 614 | 611 |
EdgeSetExtender() {
|
| 615 | 612 |
arc_notifier.setContainer(*this); |
| 616 | 613 |
edge_notifier.setContainer(*this); |
| 617 | 614 |
} |
| 618 | 615 |
|
| 619 | 616 |
~EdgeSetExtender() {
|
| 620 | 617 |
edge_notifier.clear(); |
| 621 | 618 |
arc_notifier.clear(); |
| 622 | 619 |
} |
| 623 | 620 |
|
| 624 | 621 |
}; |
| 625 | 622 |
|
| 626 | 623 |
} |
| 627 | 624 |
|
| 628 | 625 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_BITS_GRAPH_ADAPTOR_EXTENDER_H |
| 20 | 20 |
#define LEMON_BITS_GRAPH_ADAPTOR_EXTENDER_H |
| 21 | 21 |
|
| 22 | 22 |
#include <lemon/core.h> |
| 23 | 23 |
#include <lemon/error.h> |
| 24 | 24 |
|
| 25 |
#include <lemon/bits/default_map.h> |
|
| 26 |
|
|
| 27 | 25 |
namespace lemon {
|
| 28 | 26 |
|
| 29 | 27 |
template <typename _Digraph> |
| 30 | 28 |
class DigraphAdaptorExtender : public _Digraph {
|
| 29 |
typedef _Digraph Parent; |
|
| 30 |
|
|
| 31 | 31 |
public: |
| 32 | 32 |
|
| 33 |
typedef _Digraph Parent; |
|
| 34 | 33 |
typedef _Digraph Digraph; |
| 35 | 34 |
typedef DigraphAdaptorExtender Adaptor; |
| 36 | 35 |
|
| 37 | 36 |
// Base extensions |
| 38 | 37 |
|
| 39 | 38 |
typedef typename Parent::Node Node; |
| 40 | 39 |
typedef typename Parent::Arc Arc; |
| 41 | 40 |
|
| 42 | 41 |
int maxId(Node) const {
|
| 43 | 42 |
return Parent::maxNodeId(); |
| 44 | 43 |
} |
| 45 | 44 |
|
| 46 | 45 |
int maxId(Arc) const {
|
| 47 | 46 |
return Parent::maxArcId(); |
| 48 | 47 |
} |
| 49 | 48 |
|
| 50 | 49 |
Node fromId(int id, Node) const {
|
| 51 | 50 |
return Parent::nodeFromId(id); |
| 52 | 51 |
} |
| 53 | 52 |
|
| 54 | 53 |
Arc fromId(int id, Arc) const {
|
| 55 | 54 |
return Parent::arcFromId(id); |
| 56 | 55 |
} |
| 57 | 56 |
|
| 58 | 57 |
Node oppositeNode(const Node &n, const Arc &e) const {
|
| 59 | 58 |
if (n == Parent::source(e)) |
| 60 | 59 |
return Parent::target(e); |
| 61 | 60 |
else if(n==Parent::target(e)) |
| 62 | 61 |
return Parent::source(e); |
| 63 | 62 |
else |
| 64 | 63 |
return INVALID; |
| 65 | 64 |
} |
| 66 | 65 |
|
| 67 | 66 |
class NodeIt : public Node {
|
| 68 | 67 |
const Adaptor* _adaptor; |
| 69 | 68 |
public: |
| 70 | 69 |
|
| 71 | 70 |
NodeIt() {}
|
| 72 | 71 |
|
| 73 | 72 |
NodeIt(Invalid i) : Node(i) { }
|
| 74 | 73 |
|
| 75 | 74 |
explicit NodeIt(const Adaptor& adaptor) : _adaptor(&adaptor) {
|
| 76 | 75 |
_adaptor->first(static_cast<Node&>(*this)); |
| 77 | 76 |
} |
| 78 | 77 |
|
| 79 | 78 |
NodeIt(const Adaptor& adaptor, const Node& node) |
| 80 | 79 |
: Node(node), _adaptor(&adaptor) {}
|
| 81 | 80 |
|
| 82 | 81 |
NodeIt& operator++() {
|
| 83 | 82 |
_adaptor->next(*this); |
| 84 | 83 |
return *this; |
| 85 | 84 |
} |
| 86 | 85 |
|
| 87 | 86 |
}; |
| 88 | 87 |
|
| 89 | 88 |
|
| 90 | 89 |
class ArcIt : public Arc {
|
| 91 | 90 |
const Adaptor* _adaptor; |
| 92 | 91 |
public: |
| 93 | 92 |
|
| 94 | 93 |
ArcIt() { }
|
| 95 | 94 |
|
| 96 | 95 |
ArcIt(Invalid i) : Arc(i) { }
|
| 97 | 96 |
|
| 98 | 97 |
explicit ArcIt(const Adaptor& adaptor) : _adaptor(&adaptor) {
|
| 99 | 98 |
_adaptor->first(static_cast<Arc&>(*this)); |
| 100 | 99 |
} |
| 101 | 100 |
|
| 102 | 101 |
ArcIt(const Adaptor& adaptor, const Arc& e) : |
| 103 | 102 |
Arc(e), _adaptor(&adaptor) { }
|
| 104 | 103 |
|
| 105 | 104 |
ArcIt& operator++() {
|
| 106 | 105 |
_adaptor->next(*this); |
| 107 | 106 |
return *this; |
| 108 | 107 |
} |
| 109 | 108 |
|
| 110 | 109 |
}; |
| 111 | 110 |
|
| 112 | 111 |
|
| 113 | 112 |
class OutArcIt : public Arc {
|
| 114 | 113 |
const Adaptor* _adaptor; |
| 115 | 114 |
public: |
| 116 | 115 |
|
| 117 | 116 |
OutArcIt() { }
|
| 118 | 117 |
|
| 119 | 118 |
OutArcIt(Invalid i) : Arc(i) { }
|
| 120 | 119 |
|
| 121 | 120 |
OutArcIt(const Adaptor& adaptor, const Node& node) |
| 122 | 121 |
: _adaptor(&adaptor) {
|
| 123 | 122 |
_adaptor->firstOut(*this, node); |
| 124 | 123 |
} |
| 125 | 124 |
|
| 126 | 125 |
OutArcIt(const Adaptor& adaptor, const Arc& arc) |
| 127 | 126 |
: Arc(arc), _adaptor(&adaptor) {}
|
| 128 | 127 |
|
| 129 | 128 |
OutArcIt& operator++() {
|
| 130 | 129 |
_adaptor->nextOut(*this); |
| 131 | 130 |
return *this; |
| 132 | 131 |
} |
| 133 | 132 |
|
| 134 | 133 |
}; |
| 135 | 134 |
|
| 136 | 135 |
|
| 137 | 136 |
class InArcIt : public Arc {
|
| 138 | 137 |
const Adaptor* _adaptor; |
| 139 | 138 |
public: |
| 140 | 139 |
|
| 141 | 140 |
InArcIt() { }
|
| 142 | 141 |
|
| 143 | 142 |
InArcIt(Invalid i) : Arc(i) { }
|
| 144 | 143 |
|
| 145 | 144 |
InArcIt(const Adaptor& adaptor, const Node& node) |
| 146 | 145 |
: _adaptor(&adaptor) {
|
| 147 | 146 |
_adaptor->firstIn(*this, node); |
| 148 | 147 |
} |
| 149 | 148 |
|
| 150 | 149 |
InArcIt(const Adaptor& adaptor, const Arc& arc) : |
| 151 | 150 |
Arc(arc), _adaptor(&adaptor) {}
|
| 152 | 151 |
|
| 153 | 152 |
InArcIt& operator++() {
|
| 154 | 153 |
_adaptor->nextIn(*this); |
| 155 | 154 |
return *this; |
| 156 | 155 |
} |
| 157 | 156 |
|
| 158 | 157 |
}; |
| 159 | 158 |
|
| 160 | 159 |
Node baseNode(const OutArcIt &e) const {
|
| 161 | 160 |
return Parent::source(e); |
| 162 | 161 |
} |
| 163 | 162 |
Node runningNode(const OutArcIt &e) const {
|
| 164 | 163 |
return Parent::target(e); |
| 165 | 164 |
} |
| 166 | 165 |
|
| 167 | 166 |
Node baseNode(const InArcIt &e) const {
|
| 168 | 167 |
return Parent::target(e); |
| 169 | 168 |
} |
| 170 | 169 |
Node runningNode(const InArcIt &e) const {
|
| 171 | 170 |
return Parent::source(e); |
| 172 | 171 |
} |
| 173 | 172 |
|
| 174 | 173 |
}; |
| 175 | 174 |
|
| 176 | 175 |
template <typename _Graph> |
| 177 | 176 |
class GraphAdaptorExtender : public _Graph {
|
| 177 |
typedef _Graph Parent; |
|
| 178 |
|
|
| 178 | 179 |
public: |
| 179 | 180 |
|
| 180 |
typedef _Graph Parent; |
|
| 181 | 181 |
typedef _Graph Graph; |
| 182 | 182 |
typedef GraphAdaptorExtender Adaptor; |
| 183 | 183 |
|
| 184 | 184 |
typedef typename Parent::Node Node; |
| 185 | 185 |
typedef typename Parent::Arc Arc; |
| 186 | 186 |
typedef typename Parent::Edge Edge; |
| 187 | 187 |
|
| 188 | 188 |
// Graph extension |
| 189 | 189 |
|
| 190 | 190 |
int maxId(Node) const {
|
| 191 | 191 |
return Parent::maxNodeId(); |
| 192 | 192 |
} |
| 193 | 193 |
|
| 194 | 194 |
int maxId(Arc) const {
|
| 195 | 195 |
return Parent::maxArcId(); |
| 196 | 196 |
} |
| 197 | 197 |
|
| 198 | 198 |
int maxId(Edge) const {
|
| 199 | 199 |
return Parent::maxEdgeId(); |
| 200 | 200 |
} |
| 201 | 201 |
|
| 202 | 202 |
Node fromId(int id, Node) const {
|
| 203 | 203 |
return Parent::nodeFromId(id); |
| 204 | 204 |
} |
| 205 | 205 |
|
| 206 | 206 |
Arc fromId(int id, Arc) const {
|
| 207 | 207 |
return Parent::arcFromId(id); |
| 208 | 208 |
} |
| 209 | 209 |
|
| 210 | 210 |
Edge fromId(int id, Edge) const {
|
| 211 | 211 |
return Parent::edgeFromId(id); |
| 212 | 212 |
} |
| 213 | 213 |
|
| 214 | 214 |
Node oppositeNode(const Node &n, const Edge &e) const {
|
| 215 | 215 |
if( n == Parent::u(e)) |
| 216 | 216 |
return Parent::v(e); |
| 217 | 217 |
else if( n == Parent::v(e)) |
| 218 | 218 |
return Parent::u(e); |
| 219 | 219 |
else |
| 220 | 220 |
return INVALID; |
| 221 | 221 |
} |
| 222 | 222 |
|
| 223 | 223 |
Arc oppositeArc(const Arc &a) const {
|
| 224 | 224 |
return Parent::direct(a, !Parent::direction(a)); |
| 225 | 225 |
} |
| 226 | 226 |
|
| 227 | 227 |
using Parent::direct; |
| 228 | 228 |
Arc direct(const Edge &e, const Node &s) const {
|
| 229 | 229 |
return Parent::direct(e, Parent::u(e) == s); |
| 230 | 230 |
} |
| 231 | 231 |
|
| 232 | 232 |
|
| 233 | 233 |
class NodeIt : public Node {
|
| 234 | 234 |
const Adaptor* _adaptor; |
| 235 | 235 |
public: |
| 236 | 236 |
|
| 237 | 237 |
NodeIt() {}
|
| 238 | 238 |
|
| 239 | 239 |
NodeIt(Invalid i) : Node(i) { }
|
| 240 | 240 |
|
| 241 | 241 |
explicit NodeIt(const Adaptor& adaptor) : _adaptor(&adaptor) {
|
| 242 | 242 |
_adaptor->first(static_cast<Node&>(*this)); |
| 243 | 243 |
} |
| 244 | 244 |
|
| 245 | 245 |
NodeIt(const Adaptor& adaptor, const Node& node) |
| 246 | 246 |
: Node(node), _adaptor(&adaptor) {}
|
| 247 | 247 |
|
| 248 | 248 |
NodeIt& operator++() {
|
| 249 | 249 |
_adaptor->next(*this); |
| 250 | 250 |
return *this; |
| 251 | 251 |
} |
| 252 | 252 |
|
| 253 | 253 |
}; |
| 254 | 254 |
|
| 255 | 255 |
|
| 256 | 256 |
class ArcIt : public Arc {
|
| 257 | 257 |
const Adaptor* _adaptor; |
| 258 | 258 |
public: |
| 259 | 259 |
|
| 260 | 260 |
ArcIt() { }
|
| 261 | 261 |
|
| 262 | 262 |
ArcIt(Invalid i) : Arc(i) { }
|
| 263 | 263 |
|
| 264 | 264 |
explicit ArcIt(const Adaptor& adaptor) : _adaptor(&adaptor) {
|
| 265 | 265 |
_adaptor->first(static_cast<Arc&>(*this)); |
| 266 | 266 |
} |
| 267 | 267 |
|
| 268 | 268 |
ArcIt(const Adaptor& adaptor, const Arc& e) : |
| 269 | 269 |
Arc(e), _adaptor(&adaptor) { }
|
| 270 | 270 |
|
| 271 | 271 |
ArcIt& operator++() {
|
| 272 | 272 |
_adaptor->next(*this); |
| 273 | 273 |
return *this; |
| 274 | 274 |
} |
| 275 | 275 |
|
| 276 | 276 |
}; |
| 277 | 277 |
|
| 278 | 278 |
|
| 279 | 279 |
class OutArcIt : public Arc {
|
| 280 | 280 |
const Adaptor* _adaptor; |
| 281 | 281 |
public: |
| 282 | 282 |
|
| 283 | 283 |
OutArcIt() { }
|
| 284 | 284 |
|
| 285 | 285 |
OutArcIt(Invalid i) : Arc(i) { }
|
| 286 | 286 |
|
| 287 | 287 |
OutArcIt(const Adaptor& adaptor, const Node& node) |
| 288 | 288 |
: _adaptor(&adaptor) {
|
| 289 | 289 |
_adaptor->firstOut(*this, node); |
| 290 | 290 |
} |
| 291 | 291 |
|
| 292 | 292 |
OutArcIt(const Adaptor& adaptor, const Arc& arc) |
| 293 | 293 |
: Arc(arc), _adaptor(&adaptor) {}
|
| 294 | 294 |
|
| 295 | 295 |
OutArcIt& operator++() {
|
| 296 | 296 |
_adaptor->nextOut(*this); |
| 297 | 297 |
return *this; |
| 298 | 298 |
} |
| 299 | 299 |
|
| 300 | 300 |
}; |
| 301 | 301 |
|
| 302 | 302 |
|
| 303 | 303 |
class InArcIt : public Arc {
|
| 304 | 304 |
const Adaptor* _adaptor; |
| 305 | 305 |
public: |
| 306 | 306 |
|
| 307 | 307 |
InArcIt() { }
|
| 308 | 308 |
|
| 309 | 309 |
InArcIt(Invalid i) : Arc(i) { }
|
| 310 | 310 |
|
| 311 | 311 |
InArcIt(const Adaptor& adaptor, const Node& node) |
| 312 | 312 |
: _adaptor(&adaptor) {
|
| 313 | 313 |
_adaptor->firstIn(*this, node); |
| 314 | 314 |
} |
| 315 | 315 |
|
| 316 | 316 |
InArcIt(const Adaptor& adaptor, const Arc& arc) : |
| 317 | 317 |
Arc(arc), _adaptor(&adaptor) {}
|
| 318 | 318 |
|
| 319 | 319 |
InArcIt& operator++() {
|
| 320 | 320 |
_adaptor->nextIn(*this); |
| 321 | 321 |
return *this; |
| 322 | 322 |
} |
| 323 | 323 |
|
| 324 | 324 |
}; |
| 325 | 325 |
|
| 326 | 326 |
class EdgeIt : public Parent::Edge {
|
| 327 | 327 |
const Adaptor* _adaptor; |
| 328 | 328 |
public: |
| 329 | 329 |
|
| 330 | 330 |
EdgeIt() { }
|
| 331 | 331 |
|
| 332 | 332 |
EdgeIt(Invalid i) : Edge(i) { }
|
| 333 | 333 |
|
| 334 | 334 |
explicit EdgeIt(const Adaptor& adaptor) : _adaptor(&adaptor) {
|
| 335 | 335 |
_adaptor->first(static_cast<Edge&>(*this)); |
| 336 | 336 |
} |
| 337 | 337 |
|
| 338 | 338 |
EdgeIt(const Adaptor& adaptor, const Edge& e) : |
| 339 | 339 |
Edge(e), _adaptor(&adaptor) { }
|
| 340 | 340 |
|
| 341 | 341 |
EdgeIt& operator++() {
|
| 342 | 342 |
_adaptor->next(*this); |
| 343 | 343 |
return *this; |
| 344 | 344 |
} |
| 345 | 345 |
|
| 346 | 346 |
}; |
| 347 | 347 |
|
| 348 | 348 |
class IncEdgeIt : public Edge {
|
| 349 | 349 |
friend class GraphAdaptorExtender; |
| 350 | 350 |
const Adaptor* _adaptor; |
| 351 | 351 |
bool direction; |
| 352 | 352 |
public: |
| 353 | 353 |
|
| 354 | 354 |
IncEdgeIt() { }
|
| 355 | 355 |
|
| 356 | 356 |
IncEdgeIt(Invalid i) : Edge(i), direction(false) { }
|
| 357 | 357 |
|
| 358 | 358 |
IncEdgeIt(const Adaptor& adaptor, const Node &n) : _adaptor(&adaptor) {
|
| 359 | 359 |
_adaptor->firstInc(static_cast<Edge&>(*this), direction, n); |
| 360 | 360 |
} |
| 361 | 361 |
|
| 362 | 362 |
IncEdgeIt(const Adaptor& adaptor, const Edge &e, const Node &n) |
| 363 | 363 |
: _adaptor(&adaptor), Edge(e) {
|
| 364 | 364 |
direction = (_adaptor->u(e) == n); |
| 365 | 365 |
} |
| 366 | 366 |
|
| 367 | 367 |
IncEdgeIt& operator++() {
|
| 368 | 368 |
_adaptor->nextInc(*this, direction); |
| 369 | 369 |
return *this; |
| 370 | 370 |
} |
| 371 | 371 |
}; |
| 372 | 372 |
|
| 373 | 373 |
Node baseNode(const OutArcIt &a) const {
|
| 374 | 374 |
return Parent::source(a); |
| 375 | 375 |
} |
| 376 | 376 |
Node runningNode(const OutArcIt &a) const {
|
| 377 | 377 |
return Parent::target(a); |
| 378 | 378 |
} |
| 379 | 379 |
|
| 380 | 380 |
Node baseNode(const InArcIt &a) const {
|
| 381 | 381 |
return Parent::target(a); |
| 382 | 382 |
} |
| 383 | 383 |
Node runningNode(const InArcIt &a) const {
|
| 384 | 384 |
return Parent::source(a); |
| 385 | 385 |
} |
| 386 | 386 |
|
| 387 | 387 |
Node baseNode(const IncEdgeIt &e) const {
|
| 388 | 388 |
return e.direction ? Parent::u(e) : Parent::v(e); |
| 389 | 389 |
} |
| 390 | 390 |
Node runningNode(const IncEdgeIt &e) const {
|
| 391 | 391 |
return e.direction ? Parent::v(e) : Parent::u(e); |
| 392 | 392 |
} |
| 393 | 393 |
|
| 394 | 394 |
}; |
| 395 | 395 |
|
| 396 | 396 |
} |
| 397 | 397 |
|
| 398 | 398 |
|
| 399 | 399 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_BITS_GRAPH_EXTENDER_H |
| 20 | 20 |
#define LEMON_BITS_GRAPH_EXTENDER_H |
| 21 | 21 |
|
| 22 | 22 |
#include <lemon/core.h> |
| 23 | 23 |
|
| 24 | 24 |
#include <lemon/bits/map_extender.h> |
| 25 | 25 |
#include <lemon/bits/default_map.h> |
| 26 | 26 |
|
| 27 | 27 |
#include <lemon/concept_check.h> |
| 28 | 28 |
#include <lemon/concepts/maps.h> |
| 29 | 29 |
|
| 30 | 30 |
//\ingroup graphbits |
| 31 | 31 |
//\file |
| 32 | 32 |
//\brief Extenders for the graph types |
| 33 | 33 |
namespace lemon {
|
| 34 | 34 |
|
| 35 | 35 |
// \ingroup graphbits |
| 36 | 36 |
// |
| 37 | 37 |
// \brief Extender for the digraph implementations |
| 38 | 38 |
template <typename Base> |
| 39 | 39 |
class DigraphExtender : public Base {
|
| 40 |
typedef Base Parent; |
|
| 41 |
|
|
| 40 | 42 |
public: |
| 41 | 43 |
|
| 42 |
typedef Base Parent; |
|
| 43 | 44 |
typedef DigraphExtender Digraph; |
| 44 | 45 |
|
| 45 | 46 |
// Base extensions |
| 46 | 47 |
|
| 47 | 48 |
typedef typename Parent::Node Node; |
| 48 | 49 |
typedef typename Parent::Arc Arc; |
| 49 | 50 |
|
| 50 | 51 |
int maxId(Node) const {
|
| 51 | 52 |
return Parent::maxNodeId(); |
| 52 | 53 |
} |
| 53 | 54 |
|
| 54 | 55 |
int maxId(Arc) const {
|
| 55 | 56 |
return Parent::maxArcId(); |
| 56 | 57 |
} |
| 57 | 58 |
|
| 58 |
Node fromId(int id, Node) |
|
| 59 |
static Node fromId(int id, Node) {
|
|
| 59 | 60 |
return Parent::nodeFromId(id); |
| 60 | 61 |
} |
| 61 | 62 |
|
| 62 |
Arc fromId(int id, Arc) |
|
| 63 |
static Arc fromId(int id, Arc) {
|
|
| 63 | 64 |
return Parent::arcFromId(id); |
| 64 | 65 |
} |
| 65 | 66 |
|
| 66 | 67 |
Node oppositeNode(const Node &node, const Arc &arc) const {
|
| 67 | 68 |
if (node == Parent::source(arc)) |
| 68 | 69 |
return Parent::target(arc); |
| 69 | 70 |
else if(node == Parent::target(arc)) |
| 70 | 71 |
return Parent::source(arc); |
| 71 | 72 |
else |
| 72 | 73 |
return INVALID; |
| 73 | 74 |
} |
| 74 | 75 |
|
| 75 | 76 |
// Alterable extension |
| 76 | 77 |
|
| 77 | 78 |
typedef AlterationNotifier<DigraphExtender, Node> NodeNotifier; |
| 78 | 79 |
typedef AlterationNotifier<DigraphExtender, Arc> ArcNotifier; |
| 79 | 80 |
|
| 80 | 81 |
|
| 81 | 82 |
protected: |
| 82 | 83 |
|
| 83 | 84 |
mutable NodeNotifier node_notifier; |
| 84 | 85 |
mutable ArcNotifier arc_notifier; |
| 85 | 86 |
|
| 86 | 87 |
public: |
| 87 | 88 |
|
| 88 | 89 |
NodeNotifier& notifier(Node) const {
|
| 89 | 90 |
return node_notifier; |
| 90 | 91 |
} |
| 91 | 92 |
|
| 92 | 93 |
ArcNotifier& notifier(Arc) const {
|
| 93 | 94 |
return arc_notifier; |
| 94 | 95 |
} |
| 95 | 96 |
|
| 96 | 97 |
class NodeIt : public Node {
|
| 97 | 98 |
const Digraph* _digraph; |
| 98 | 99 |
public: |
| 99 | 100 |
|
| 100 | 101 |
NodeIt() {}
|
| 101 | 102 |
|
| 102 | 103 |
NodeIt(Invalid i) : Node(i) { }
|
| 103 | 104 |
|
| 104 | 105 |
explicit NodeIt(const Digraph& digraph) : _digraph(&digraph) {
|
| 105 | 106 |
_digraph->first(static_cast<Node&>(*this)); |
| 106 | 107 |
} |
| 107 | 108 |
|
| 108 | 109 |
NodeIt(const Digraph& digraph, const Node& node) |
| 109 | 110 |
: Node(node), _digraph(&digraph) {}
|
| 110 | 111 |
|
| 111 | 112 |
NodeIt& operator++() {
|
| 112 | 113 |
_digraph->next(*this); |
| 113 | 114 |
return *this; |
| 114 | 115 |
} |
| 115 | 116 |
|
| 116 | 117 |
}; |
| 117 | 118 |
|
| 118 | 119 |
|
| 119 | 120 |
class ArcIt : public Arc {
|
| 120 | 121 |
const Digraph* _digraph; |
| 121 | 122 |
public: |
| 122 | 123 |
|
| 123 | 124 |
ArcIt() { }
|
| 124 | 125 |
|
| 125 | 126 |
ArcIt(Invalid i) : Arc(i) { }
|
| 126 | 127 |
|
| 127 | 128 |
explicit ArcIt(const Digraph& digraph) : _digraph(&digraph) {
|
| 128 | 129 |
_digraph->first(static_cast<Arc&>(*this)); |
| 129 | 130 |
} |
| 130 | 131 |
|
| 131 | 132 |
ArcIt(const Digraph& digraph, const Arc& arc) : |
| 132 | 133 |
Arc(arc), _digraph(&digraph) { }
|
| 133 | 134 |
|
| 134 | 135 |
ArcIt& operator++() {
|
| 135 | 136 |
_digraph->next(*this); |
| 136 | 137 |
return *this; |
| 137 | 138 |
} |
| 138 | 139 |
|
| 139 | 140 |
}; |
| 140 | 141 |
|
| 141 | 142 |
|
| 142 | 143 |
class OutArcIt : public Arc {
|
| 143 | 144 |
const Digraph* _digraph; |
| 144 | 145 |
public: |
| 145 | 146 |
|
| 146 | 147 |
OutArcIt() { }
|
| 147 | 148 |
|
| 148 | 149 |
OutArcIt(Invalid i) : Arc(i) { }
|
| 149 | 150 |
|
| 150 | 151 |
OutArcIt(const Digraph& digraph, const Node& node) |
| 151 | 152 |
: _digraph(&digraph) {
|
| 152 | 153 |
_digraph->firstOut(*this, node); |
| 153 | 154 |
} |
| 154 | 155 |
|
| 155 | 156 |
OutArcIt(const Digraph& digraph, const Arc& arc) |
| 156 | 157 |
: Arc(arc), _digraph(&digraph) {}
|
| 157 | 158 |
|
| 158 | 159 |
OutArcIt& operator++() {
|
| 159 | 160 |
_digraph->nextOut(*this); |
| 160 | 161 |
return *this; |
| 161 | 162 |
} |
| 162 | 163 |
|
| 163 | 164 |
}; |
| 164 | 165 |
|
| 165 | 166 |
|
| 166 | 167 |
class InArcIt : public Arc {
|
| 167 | 168 |
const Digraph* _digraph; |
| 168 | 169 |
public: |
| 169 | 170 |
|
| 170 | 171 |
InArcIt() { }
|
| 171 | 172 |
|
| 172 | 173 |
InArcIt(Invalid i) : Arc(i) { }
|
| 173 | 174 |
|
| 174 | 175 |
InArcIt(const Digraph& digraph, const Node& node) |
| 175 | 176 |
: _digraph(&digraph) {
|
| 176 | 177 |
_digraph->firstIn(*this, node); |
| 177 | 178 |
} |
| 178 | 179 |
|
| 179 | 180 |
InArcIt(const Digraph& digraph, const Arc& arc) : |
| 180 | 181 |
Arc(arc), _digraph(&digraph) {}
|
| 181 | 182 |
|
| 182 | 183 |
InArcIt& operator++() {
|
| 183 | 184 |
_digraph->nextIn(*this); |
| 184 | 185 |
return *this; |
| 185 | 186 |
} |
| 186 | 187 |
|
| 187 | 188 |
}; |
| 188 | 189 |
|
| 189 | 190 |
// \brief Base node of the iterator |
| 190 | 191 |
// |
| 191 | 192 |
// Returns the base node (i.e. the source in this case) of the iterator |
| 192 | 193 |
Node baseNode(const OutArcIt &arc) const {
|
| 193 | 194 |
return Parent::source(arc); |
| 194 | 195 |
} |
| 195 | 196 |
// \brief Running node of the iterator |
| 196 | 197 |
// |
| 197 | 198 |
// Returns the running node (i.e. the target in this case) of the |
| 198 | 199 |
// iterator |
| 199 | 200 |
Node runningNode(const OutArcIt &arc) const {
|
| 200 | 201 |
return Parent::target(arc); |
| 201 | 202 |
} |
| 202 | 203 |
|
| 203 | 204 |
// \brief Base node of the iterator |
| 204 | 205 |
// |
| 205 | 206 |
// Returns the base node (i.e. the target in this case) of the iterator |
| 206 | 207 |
Node baseNode(const InArcIt &arc) const {
|
| 207 | 208 |
return Parent::target(arc); |
| 208 | 209 |
} |
| 209 | 210 |
// \brief Running node of the iterator |
| 210 | 211 |
// |
| 211 | 212 |
// Returns the running node (i.e. the source in this case) of the |
| 212 | 213 |
// iterator |
| 213 | 214 |
Node runningNode(const InArcIt &arc) const {
|
| 214 | 215 |
return Parent::source(arc); |
| 215 | 216 |
} |
| 216 | 217 |
|
| 217 | 218 |
|
| 218 | 219 |
template <typename _Value> |
| 219 | 220 |
class NodeMap |
| 220 | 221 |
: public MapExtender<DefaultMap<Digraph, Node, _Value> > {
|
| 221 |
public: |
|
| 222 |
typedef DigraphExtender Digraph; |
|
| 223 | 222 |
typedef MapExtender<DefaultMap<Digraph, Node, _Value> > Parent; |
| 224 | 223 |
|
| 224 |
public: |
|
| 225 | 225 |
explicit NodeMap(const Digraph& digraph) |
| 226 | 226 |
: Parent(digraph) {}
|
| 227 | 227 |
NodeMap(const Digraph& digraph, const _Value& value) |
| 228 | 228 |
: Parent(digraph, value) {}
|
| 229 | 229 |
|
| 230 | 230 |
private: |
| 231 | 231 |
NodeMap& operator=(const NodeMap& cmap) {
|
| 232 | 232 |
return operator=<NodeMap>(cmap); |
| 233 | 233 |
} |
| 234 | 234 |
|
| 235 | 235 |
template <typename CMap> |
| 236 | 236 |
NodeMap& operator=(const CMap& cmap) {
|
| 237 | 237 |
Parent::operator=(cmap); |
| 238 | 238 |
return *this; |
| 239 | 239 |
} |
| 240 | 240 |
|
| 241 | 241 |
}; |
| 242 | 242 |
|
| 243 | 243 |
template <typename _Value> |
| 244 | 244 |
class ArcMap |
| 245 | 245 |
: public MapExtender<DefaultMap<Digraph, Arc, _Value> > {
|
| 246 |
public: |
|
| 247 |
typedef DigraphExtender Digraph; |
|
| 248 | 246 |
typedef MapExtender<DefaultMap<Digraph, Arc, _Value> > Parent; |
| 249 | 247 |
|
| 248 |
public: |
|
| 250 | 249 |
explicit ArcMap(const Digraph& digraph) |
| 251 | 250 |
: Parent(digraph) {}
|
| 252 | 251 |
ArcMap(const Digraph& digraph, const _Value& value) |
| 253 | 252 |
: Parent(digraph, value) {}
|
| 254 | 253 |
|
| 255 | 254 |
private: |
| 256 | 255 |
ArcMap& operator=(const ArcMap& cmap) {
|
| 257 | 256 |
return operator=<ArcMap>(cmap); |
| 258 | 257 |
} |
| 259 | 258 |
|
| 260 | 259 |
template <typename CMap> |
| 261 | 260 |
ArcMap& operator=(const CMap& cmap) {
|
| 262 | 261 |
Parent::operator=(cmap); |
| 263 | 262 |
return *this; |
| 264 | 263 |
} |
| 265 | 264 |
}; |
| 266 | 265 |
|
| 267 | 266 |
|
| 268 | 267 |
Node addNode() {
|
| 269 | 268 |
Node node = Parent::addNode(); |
| 270 | 269 |
notifier(Node()).add(node); |
| 271 | 270 |
return node; |
| 272 | 271 |
} |
| 273 | 272 |
|
| 274 | 273 |
Arc addArc(const Node& from, const Node& to) {
|
| 275 | 274 |
Arc arc = Parent::addArc(from, to); |
| 276 | 275 |
notifier(Arc()).add(arc); |
| 277 | 276 |
return arc; |
| 278 | 277 |
} |
| 279 | 278 |
|
| 280 | 279 |
void clear() {
|
| 281 | 280 |
notifier(Arc()).clear(); |
| 282 | 281 |
notifier(Node()).clear(); |
| 283 | 282 |
Parent::clear(); |
| 284 | 283 |
} |
| 285 | 284 |
|
| 286 | 285 |
template <typename Digraph, typename NodeRefMap, typename ArcRefMap> |
| 287 | 286 |
void build(const Digraph& digraph, NodeRefMap& nodeRef, ArcRefMap& arcRef) {
|
| 288 | 287 |
Parent::build(digraph, nodeRef, arcRef); |
| 289 | 288 |
notifier(Node()).build(); |
| 290 | 289 |
notifier(Arc()).build(); |
| 291 | 290 |
} |
| 292 | 291 |
|
| 293 | 292 |
void erase(const Node& node) {
|
| 294 | 293 |
Arc arc; |
| 295 | 294 |
Parent::firstOut(arc, node); |
| 296 | 295 |
while (arc != INVALID ) {
|
| 297 | 296 |
erase(arc); |
| 298 | 297 |
Parent::firstOut(arc, node); |
| 299 | 298 |
} |
| 300 | 299 |
|
| 301 | 300 |
Parent::firstIn(arc, node); |
| 302 | 301 |
while (arc != INVALID ) {
|
| 303 | 302 |
erase(arc); |
| 304 | 303 |
Parent::firstIn(arc, node); |
| 305 | 304 |
} |
| 306 | 305 |
|
| 307 | 306 |
notifier(Node()).erase(node); |
| 308 | 307 |
Parent::erase(node); |
| 309 | 308 |
} |
| 310 | 309 |
|
| 311 | 310 |
void erase(const Arc& arc) {
|
| 312 | 311 |
notifier(Arc()).erase(arc); |
| 313 | 312 |
Parent::erase(arc); |
| 314 | 313 |
} |
| 315 | 314 |
|
| 316 | 315 |
DigraphExtender() {
|
| 317 | 316 |
node_notifier.setContainer(*this); |
| 318 | 317 |
arc_notifier.setContainer(*this); |
| 319 | 318 |
} |
| 320 | 319 |
|
| 321 | 320 |
|
| 322 | 321 |
~DigraphExtender() {
|
| 323 | 322 |
arc_notifier.clear(); |
| 324 | 323 |
node_notifier.clear(); |
| 325 | 324 |
} |
| 326 | 325 |
}; |
| 327 | 326 |
|
| 328 | 327 |
// \ingroup _graphbits |
| 329 | 328 |
// |
| 330 | 329 |
// \brief Extender for the Graphs |
| 331 | 330 |
template <typename Base> |
| 332 | 331 |
class GraphExtender : public Base {
|
| 332 |
typedef Base Parent; |
|
| 333 |
|
|
| 333 | 334 |
public: |
| 334 | 335 |
|
| 335 |
typedef Base Parent; |
|
| 336 | 336 |
typedef GraphExtender Graph; |
| 337 | 337 |
|
| 338 | 338 |
typedef True UndirectedTag; |
| 339 | 339 |
|
| 340 | 340 |
typedef typename Parent::Node Node; |
| 341 | 341 |
typedef typename Parent::Arc Arc; |
| 342 | 342 |
typedef typename Parent::Edge Edge; |
| 343 | 343 |
|
| 344 | 344 |
// Graph extension |
| 345 | 345 |
|
| 346 | 346 |
int maxId(Node) const {
|
| 347 | 347 |
return Parent::maxNodeId(); |
| 348 | 348 |
} |
| 349 | 349 |
|
| 350 | 350 |
int maxId(Arc) const {
|
| 351 | 351 |
return Parent::maxArcId(); |
| 352 | 352 |
} |
| 353 | 353 |
|
| 354 | 354 |
int maxId(Edge) const {
|
| 355 | 355 |
return Parent::maxEdgeId(); |
| 356 | 356 |
} |
| 357 | 357 |
|
| 358 |
Node fromId(int id, Node) |
|
| 358 |
static Node fromId(int id, Node) {
|
|
| 359 | 359 |
return Parent::nodeFromId(id); |
| 360 | 360 |
} |
| 361 | 361 |
|
| 362 |
Arc fromId(int id, Arc) |
|
| 362 |
static Arc fromId(int id, Arc) {
|
|
| 363 | 363 |
return Parent::arcFromId(id); |
| 364 | 364 |
} |
| 365 | 365 |
|
| 366 |
Edge fromId(int id, Edge) |
|
| 366 |
static Edge fromId(int id, Edge) {
|
|
| 367 | 367 |
return Parent::edgeFromId(id); |
| 368 | 368 |
} |
| 369 | 369 |
|
| 370 | 370 |
Node oppositeNode(const Node &n, const Edge &e) const {
|
| 371 | 371 |
if( n == Parent::u(e)) |
| 372 | 372 |
return Parent::v(e); |
| 373 | 373 |
else if( n == Parent::v(e)) |
| 374 | 374 |
return Parent::u(e); |
| 375 | 375 |
else |
| 376 | 376 |
return INVALID; |
| 377 | 377 |
} |
| 378 | 378 |
|
| 379 | 379 |
Arc oppositeArc(const Arc &arc) const {
|
| 380 | 380 |
return Parent::direct(arc, !Parent::direction(arc)); |
| 381 | 381 |
} |
| 382 | 382 |
|
| 383 | 383 |
using Parent::direct; |
| 384 | 384 |
Arc direct(const Edge &edge, const Node &node) const {
|
| 385 | 385 |
return Parent::direct(edge, Parent::u(edge) == node); |
| 386 | 386 |
} |
| 387 | 387 |
|
| 388 | 388 |
// Alterable extension |
| 389 | 389 |
|
| 390 | 390 |
typedef AlterationNotifier<GraphExtender, Node> NodeNotifier; |
| 391 | 391 |
typedef AlterationNotifier<GraphExtender, Arc> ArcNotifier; |
| 392 | 392 |
typedef AlterationNotifier<GraphExtender, Edge> EdgeNotifier; |
| 393 | 393 |
|
| 394 | 394 |
|
| 395 | 395 |
protected: |
| 396 | 396 |
|
| 397 | 397 |
mutable NodeNotifier node_notifier; |
| 398 | 398 |
mutable ArcNotifier arc_notifier; |
| 399 | 399 |
mutable EdgeNotifier edge_notifier; |
| 400 | 400 |
|
| 401 | 401 |
public: |
| 402 | 402 |
|
| 403 | 403 |
NodeNotifier& notifier(Node) const {
|
| 404 | 404 |
return node_notifier; |
| 405 | 405 |
} |
| 406 | 406 |
|
| 407 | 407 |
ArcNotifier& notifier(Arc) const {
|
| 408 | 408 |
return arc_notifier; |
| 409 | 409 |
} |
| 410 | 410 |
|
| 411 | 411 |
EdgeNotifier& notifier(Edge) const {
|
| 412 | 412 |
return edge_notifier; |
| 413 | 413 |
} |
| 414 | 414 |
|
| 415 | 415 |
|
| 416 | 416 |
|
| 417 | 417 |
class NodeIt : public Node {
|
| 418 | 418 |
const Graph* _graph; |
| 419 | 419 |
public: |
| 420 | 420 |
|
| 421 | 421 |
NodeIt() {}
|
| 422 | 422 |
|
| 423 | 423 |
NodeIt(Invalid i) : Node(i) { }
|
| 424 | 424 |
|
| 425 | 425 |
explicit NodeIt(const Graph& graph) : _graph(&graph) {
|
| 426 | 426 |
_graph->first(static_cast<Node&>(*this)); |
| 427 | 427 |
} |
| 428 | 428 |
|
| 429 | 429 |
NodeIt(const Graph& graph, const Node& node) |
| 430 | 430 |
: Node(node), _graph(&graph) {}
|
| 431 | 431 |
|
| 432 | 432 |
NodeIt& operator++() {
|
| 433 | 433 |
_graph->next(*this); |
| 434 | 434 |
return *this; |
| 435 | 435 |
} |
| 436 | 436 |
|
| 437 | 437 |
}; |
| 438 | 438 |
|
| 439 | 439 |
|
| 440 | 440 |
class ArcIt : public Arc {
|
| 441 | 441 |
const Graph* _graph; |
| 442 | 442 |
public: |
| 443 | 443 |
|
| 444 | 444 |
ArcIt() { }
|
| 445 | 445 |
|
| 446 | 446 |
ArcIt(Invalid i) : Arc(i) { }
|
| 447 | 447 |
|
| 448 | 448 |
explicit ArcIt(const Graph& graph) : _graph(&graph) {
|
| 449 | 449 |
_graph->first(static_cast<Arc&>(*this)); |
| 450 | 450 |
} |
| 451 | 451 |
|
| 452 | 452 |
ArcIt(const Graph& graph, const Arc& arc) : |
| 453 | 453 |
Arc(arc), _graph(&graph) { }
|
| 454 | 454 |
|
| 455 | 455 |
ArcIt& operator++() {
|
| 456 | 456 |
_graph->next(*this); |
| 457 | 457 |
return *this; |
| 458 | 458 |
} |
| 459 | 459 |
|
| 460 | 460 |
}; |
| 461 | 461 |
|
| 462 | 462 |
|
| 463 | 463 |
class OutArcIt : public Arc {
|
| 464 | 464 |
const Graph* _graph; |
| 465 | 465 |
public: |
| 466 | 466 |
|
| 467 | 467 |
OutArcIt() { }
|
| 468 | 468 |
|
| 469 | 469 |
OutArcIt(Invalid i) : Arc(i) { }
|
| 470 | 470 |
|
| 471 | 471 |
OutArcIt(const Graph& graph, const Node& node) |
| 472 | 472 |
: _graph(&graph) {
|
| 473 | 473 |
_graph->firstOut(*this, node); |
| 474 | 474 |
} |
| 475 | 475 |
|
| 476 | 476 |
OutArcIt(const Graph& graph, const Arc& arc) |
| 477 | 477 |
: Arc(arc), _graph(&graph) {}
|
| 478 | 478 |
|
| 479 | 479 |
OutArcIt& operator++() {
|
| 480 | 480 |
_graph->nextOut(*this); |
| 481 | 481 |
return *this; |
| 482 | 482 |
} |
| 483 | 483 |
|
| 484 | 484 |
}; |
| 485 | 485 |
|
| 486 | 486 |
|
| 487 | 487 |
class InArcIt : public Arc {
|
| 488 | 488 |
const Graph* _graph; |
| 489 | 489 |
public: |
| 490 | 490 |
|
| 491 | 491 |
InArcIt() { }
|
| 492 | 492 |
|
| 493 | 493 |
InArcIt(Invalid i) : Arc(i) { }
|
| 494 | 494 |
|
| 495 | 495 |
InArcIt(const Graph& graph, const Node& node) |
| 496 | 496 |
: _graph(&graph) {
|
| 497 | 497 |
_graph->firstIn(*this, node); |
| 498 | 498 |
} |
| 499 | 499 |
|
| 500 | 500 |
InArcIt(const Graph& graph, const Arc& arc) : |
| 501 | 501 |
Arc(arc), _graph(&graph) {}
|
| 502 | 502 |
|
| 503 | 503 |
InArcIt& operator++() {
|
| 504 | 504 |
_graph->nextIn(*this); |
| 505 | 505 |
return *this; |
| 506 | 506 |
} |
| 507 | 507 |
|
| 508 | 508 |
}; |
| 509 | 509 |
|
| 510 | 510 |
|
| 511 | 511 |
class EdgeIt : public Parent::Edge {
|
| 512 | 512 |
const Graph* _graph; |
| 513 | 513 |
public: |
| 514 | 514 |
|
| 515 | 515 |
EdgeIt() { }
|
| 516 | 516 |
|
| 517 | 517 |
EdgeIt(Invalid i) : Edge(i) { }
|
| 518 | 518 |
|
| 519 | 519 |
explicit EdgeIt(const Graph& graph) : _graph(&graph) {
|
| 520 | 520 |
_graph->first(static_cast<Edge&>(*this)); |
| 521 | 521 |
} |
| 522 | 522 |
|
| 523 | 523 |
EdgeIt(const Graph& graph, const Edge& edge) : |
| 524 | 524 |
Edge(edge), _graph(&graph) { }
|
| 525 | 525 |
|
| 526 | 526 |
EdgeIt& operator++() {
|
| 527 | 527 |
_graph->next(*this); |
| 528 | 528 |
return *this; |
| 529 | 529 |
} |
| 530 | 530 |
|
| 531 | 531 |
}; |
| 532 | 532 |
|
| 533 | 533 |
class IncEdgeIt : public Parent::Edge {
|
| 534 | 534 |
friend class GraphExtender; |
| 535 | 535 |
const Graph* _graph; |
| 536 | 536 |
bool _direction; |
| 537 | 537 |
public: |
| 538 | 538 |
|
| 539 | 539 |
IncEdgeIt() { }
|
| 540 | 540 |
|
| 541 | 541 |
IncEdgeIt(Invalid i) : Edge(i), _direction(false) { }
|
| 542 | 542 |
|
| 543 | 543 |
IncEdgeIt(const Graph& graph, const Node &node) : _graph(&graph) {
|
| 544 | 544 |
_graph->firstInc(*this, _direction, node); |
| 545 | 545 |
} |
| 546 | 546 |
|
| 547 | 547 |
IncEdgeIt(const Graph& graph, const Edge &edge, const Node &node) |
| 548 | 548 |
: _graph(&graph), Edge(edge) {
|
| 549 | 549 |
_direction = (_graph->source(edge) == node); |
| 550 | 550 |
} |
| 551 | 551 |
|
| 552 | 552 |
IncEdgeIt& operator++() {
|
| 553 | 553 |
_graph->nextInc(*this, _direction); |
| 554 | 554 |
return *this; |
| 555 | 555 |
} |
| 556 | 556 |
}; |
| 557 | 557 |
|
| 558 | 558 |
// \brief Base node of the iterator |
| 559 | 559 |
// |
| 560 | 560 |
// Returns the base node (ie. the source in this case) of the iterator |
| 561 | 561 |
Node baseNode(const OutArcIt &arc) const {
|
| 562 | 562 |
return Parent::source(static_cast<const Arc&>(arc)); |
| 563 | 563 |
} |
| 564 | 564 |
// \brief Running node of the iterator |
| 565 | 565 |
// |
| 566 | 566 |
// Returns the running node (ie. the target in this case) of the |
| 567 | 567 |
// iterator |
| 568 | 568 |
Node runningNode(const OutArcIt &arc) const {
|
| 569 | 569 |
return Parent::target(static_cast<const Arc&>(arc)); |
| 570 | 570 |
} |
| 571 | 571 |
|
| 572 | 572 |
// \brief Base node of the iterator |
| 573 | 573 |
// |
| 574 | 574 |
// Returns the base node (ie. the target in this case) of the iterator |
| 575 | 575 |
Node baseNode(const InArcIt &arc) const {
|
| 576 | 576 |
return Parent::target(static_cast<const Arc&>(arc)); |
| 577 | 577 |
} |
| 578 | 578 |
// \brief Running node of the iterator |
| 579 | 579 |
// |
| 580 | 580 |
// Returns the running node (ie. the source in this case) of the |
| 581 | 581 |
// iterator |
| 582 | 582 |
Node runningNode(const InArcIt &arc) const {
|
| 583 | 583 |
return Parent::source(static_cast<const Arc&>(arc)); |
| 584 | 584 |
} |
| 585 | 585 |
|
| 586 | 586 |
// Base node of the iterator |
| 587 | 587 |
// |
| 588 | 588 |
// Returns the base node of the iterator |
| 589 | 589 |
Node baseNode(const IncEdgeIt &edge) const {
|
| 590 | 590 |
return edge._direction ? u(edge) : v(edge); |
| 591 | 591 |
} |
| 592 | 592 |
// Running node of the iterator |
| 593 | 593 |
// |
| 594 | 594 |
// Returns the running node of the iterator |
| 595 | 595 |
Node runningNode(const IncEdgeIt &edge) const {
|
| 596 | 596 |
return edge._direction ? v(edge) : u(edge); |
| 597 | 597 |
} |
| 598 | 598 |
|
| 599 | 599 |
// Mappable extension |
| 600 | 600 |
|
| 601 | 601 |
template <typename _Value> |
| 602 | 602 |
class NodeMap |
| 603 | 603 |
: public MapExtender<DefaultMap<Graph, Node, _Value> > {
|
| 604 |
public: |
|
| 605 |
typedef GraphExtender Graph; |
|
| 606 | 604 |
typedef MapExtender<DefaultMap<Graph, Node, _Value> > Parent; |
| 607 | 605 |
|
| 608 |
|
|
| 606 |
public: |
|
| 607 |
explicit NodeMap(const Graph& graph) |
|
| 609 | 608 |
: Parent(graph) {}
|
| 610 | 609 |
NodeMap(const Graph& graph, const _Value& value) |
| 611 | 610 |
: Parent(graph, value) {}
|
| 612 | 611 |
|
| 613 | 612 |
private: |
| 614 | 613 |
NodeMap& operator=(const NodeMap& cmap) {
|
| 615 | 614 |
return operator=<NodeMap>(cmap); |
| 616 | 615 |
} |
| 617 | 616 |
|
| 618 | 617 |
template <typename CMap> |
| 619 | 618 |
NodeMap& operator=(const CMap& cmap) {
|
| 620 | 619 |
Parent::operator=(cmap); |
| 621 | 620 |
return *this; |
| 622 | 621 |
} |
| 623 | 622 |
|
| 624 | 623 |
}; |
| 625 | 624 |
|
| 626 | 625 |
template <typename _Value> |
| 627 | 626 |
class ArcMap |
| 628 | 627 |
: public MapExtender<DefaultMap<Graph, Arc, _Value> > {
|
| 629 |
public: |
|
| 630 |
typedef GraphExtender Graph; |
|
| 631 | 628 |
typedef MapExtender<DefaultMap<Graph, Arc, _Value> > Parent; |
| 632 | 629 |
|
| 633 |
|
|
| 630 |
public: |
|
| 631 |
explicit ArcMap(const Graph& graph) |
|
| 634 | 632 |
: Parent(graph) {}
|
| 635 | 633 |
ArcMap(const Graph& graph, const _Value& value) |
| 636 | 634 |
: Parent(graph, value) {}
|
| 637 | 635 |
|
| 638 | 636 |
private: |
| 639 | 637 |
ArcMap& operator=(const ArcMap& cmap) {
|
| 640 | 638 |
return operator=<ArcMap>(cmap); |
| 641 | 639 |
} |
| 642 | 640 |
|
| 643 | 641 |
template <typename CMap> |
| 644 | 642 |
ArcMap& operator=(const CMap& cmap) {
|
| 645 | 643 |
Parent::operator=(cmap); |
| 646 | 644 |
return *this; |
| 647 | 645 |
} |
| 648 | 646 |
}; |
| 649 | 647 |
|
| 650 | 648 |
|
| 651 | 649 |
template <typename _Value> |
| 652 | 650 |
class EdgeMap |
| 653 | 651 |
: public MapExtender<DefaultMap<Graph, Edge, _Value> > {
|
| 654 |
public: |
|
| 655 |
typedef GraphExtender Graph; |
|
| 656 | 652 |
typedef MapExtender<DefaultMap<Graph, Edge, _Value> > Parent; |
| 657 | 653 |
|
| 658 |
|
|
| 654 |
public: |
|
| 655 |
explicit EdgeMap(const Graph& graph) |
|
| 659 | 656 |
: Parent(graph) {}
|
| 660 | 657 |
|
| 661 | 658 |
EdgeMap(const Graph& graph, const _Value& value) |
| 662 | 659 |
: Parent(graph, value) {}
|
| 663 | 660 |
|
| 664 | 661 |
private: |
| 665 | 662 |
EdgeMap& operator=(const EdgeMap& cmap) {
|
| 666 | 663 |
return operator=<EdgeMap>(cmap); |
| 667 | 664 |
} |
| 668 | 665 |
|
| 669 | 666 |
template <typename CMap> |
| 670 | 667 |
EdgeMap& operator=(const CMap& cmap) {
|
| 671 | 668 |
Parent::operator=(cmap); |
| 672 | 669 |
return *this; |
| 673 | 670 |
} |
| 674 | 671 |
|
| 675 | 672 |
}; |
| 676 | 673 |
|
| 677 | 674 |
// Alteration extension |
| 678 | 675 |
|
| 679 | 676 |
Node addNode() {
|
| 680 | 677 |
Node node = Parent::addNode(); |
| 681 | 678 |
notifier(Node()).add(node); |
| 682 | 679 |
return node; |
| 683 | 680 |
} |
| 684 | 681 |
|
| 685 | 682 |
Edge addEdge(const Node& from, const Node& to) {
|
| 686 | 683 |
Edge edge = Parent::addEdge(from, to); |
| 687 | 684 |
notifier(Edge()).add(edge); |
| 688 | 685 |
std::vector<Arc> ev; |
| 689 | 686 |
ev.push_back(Parent::direct(edge, true)); |
| 690 | 687 |
ev.push_back(Parent::direct(edge, false)); |
| 691 | 688 |
notifier(Arc()).add(ev); |
| 692 | 689 |
return edge; |
| 693 | 690 |
} |
| 694 | 691 |
|
| 695 | 692 |
void clear() {
|
| 696 | 693 |
notifier(Arc()).clear(); |
| 697 | 694 |
notifier(Edge()).clear(); |
| 698 | 695 |
notifier(Node()).clear(); |
| 699 | 696 |
Parent::clear(); |
| 700 | 697 |
} |
| 701 | 698 |
|
| 702 | 699 |
template <typename Graph, typename NodeRefMap, typename EdgeRefMap> |
| 703 | 700 |
void build(const Graph& graph, NodeRefMap& nodeRef, |
| 704 | 701 |
EdgeRefMap& edgeRef) {
|
| 705 | 702 |
Parent::build(graph, nodeRef, edgeRef); |
| 706 | 703 |
notifier(Node()).build(); |
| 707 | 704 |
notifier(Edge()).build(); |
| 708 | 705 |
notifier(Arc()).build(); |
| 709 | 706 |
} |
| 710 | 707 |
|
| 711 | 708 |
void erase(const Node& node) {
|
| 712 | 709 |
Arc arc; |
| 713 | 710 |
Parent::firstOut(arc, node); |
| 714 | 711 |
while (arc != INVALID ) {
|
| 715 | 712 |
erase(arc); |
| 716 | 713 |
Parent::firstOut(arc, node); |
| 717 | 714 |
} |
| 718 | 715 |
|
| 719 | 716 |
Parent::firstIn(arc, node); |
| 720 | 717 |
while (arc != INVALID ) {
|
| 721 | 718 |
erase(arc); |
| 722 | 719 |
Parent::firstIn(arc, node); |
| 723 | 720 |
} |
| 724 | 721 |
|
| 725 | 722 |
notifier(Node()).erase(node); |
| 726 | 723 |
Parent::erase(node); |
| 727 | 724 |
} |
| 728 | 725 |
|
| 729 | 726 |
void erase(const Edge& edge) {
|
| 730 | 727 |
std::vector<Arc> av; |
| 731 | 728 |
av.push_back(Parent::direct(edge, true)); |
| 732 | 729 |
av.push_back(Parent::direct(edge, false)); |
| 733 | 730 |
notifier(Arc()).erase(av); |
| 734 | 731 |
notifier(Edge()).erase(edge); |
| 735 | 732 |
Parent::erase(edge); |
| 736 | 733 |
} |
| 737 | 734 |
|
| 738 | 735 |
GraphExtender() {
|
| 739 | 736 |
node_notifier.setContainer(*this); |
| 740 | 737 |
arc_notifier.setContainer(*this); |
| 741 | 738 |
edge_notifier.setContainer(*this); |
| 742 | 739 |
} |
| 743 | 740 |
|
| 744 | 741 |
~GraphExtender() {
|
| 745 | 742 |
edge_notifier.clear(); |
| 746 | 743 |
arc_notifier.clear(); |
| 747 | 744 |
node_notifier.clear(); |
| 748 | 745 |
} |
| 749 | 746 |
|
| 750 | 747 |
}; |
| 751 | 748 |
|
| 752 | 749 |
} |
| 753 | 750 |
|
| 754 | 751 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_BITS_MAP_EXTENDER_H |
| 20 | 20 |
#define LEMON_BITS_MAP_EXTENDER_H |
| 21 | 21 |
|
| 22 | 22 |
#include <iterator> |
| 23 | 23 |
|
| 24 | 24 |
#include <lemon/bits/traits.h> |
| 25 | 25 |
|
| 26 | 26 |
#include <lemon/concept_check.h> |
| 27 | 27 |
#include <lemon/concepts/maps.h> |
| 28 | 28 |
|
| 29 | 29 |
//\file |
| 30 | 30 |
//\brief Extenders for iterable maps. |
| 31 | 31 |
|
| 32 | 32 |
namespace lemon {
|
| 33 | 33 |
|
| 34 | 34 |
// \ingroup graphbits |
| 35 | 35 |
// |
| 36 | 36 |
// \brief Extender for maps |
| 37 | 37 |
template <typename _Map> |
| 38 | 38 |
class MapExtender : public _Map {
|
| 39 |
typedef _Map Parent; |
|
| 40 |
typedef typename Parent::GraphType GraphType; |
|
| 41 |
|
|
| 39 | 42 |
public: |
| 40 | 43 |
|
| 41 |
typedef _Map Parent; |
|
| 42 | 44 |
typedef MapExtender Map; |
| 43 |
|
|
| 44 |
|
|
| 45 |
typedef typename Parent::Graph Graph; |
|
| 46 | 45 |
typedef typename Parent::Key Item; |
| 47 | 46 |
|
| 48 | 47 |
typedef typename Parent::Key Key; |
| 49 | 48 |
typedef typename Parent::Value Value; |
| 49 |
typedef typename Parent::Reference Reference; |
|
| 50 |
typedef typename Parent::ConstReference ConstReference; |
|
| 51 |
|
|
| 52 |
typedef typename Parent::ReferenceMapTag ReferenceMapTag; |
|
| 50 | 53 |
|
| 51 | 54 |
class MapIt; |
| 52 | 55 |
class ConstMapIt; |
| 53 | 56 |
|
| 54 | 57 |
friend class MapIt; |
| 55 | 58 |
friend class ConstMapIt; |
| 56 | 59 |
|
| 57 | 60 |
public: |
| 58 | 61 |
|
| 59 |
MapExtender(const |
|
| 62 |
MapExtender(const GraphType& graph) |
|
| 60 | 63 |
: Parent(graph) {}
|
| 61 | 64 |
|
| 62 |
MapExtender(const |
|
| 65 |
MapExtender(const GraphType& graph, const Value& value) |
|
| 63 | 66 |
: Parent(graph, value) {}
|
| 64 | 67 |
|
| 65 | 68 |
private: |
| 66 | 69 |
MapExtender& operator=(const MapExtender& cmap) {
|
| 67 | 70 |
return operator=<MapExtender>(cmap); |
| 68 | 71 |
} |
| 69 | 72 |
|
| 70 | 73 |
template <typename CMap> |
| 71 | 74 |
MapExtender& operator=(const CMap& cmap) {
|
| 72 | 75 |
Parent::operator=(cmap); |
| 73 | 76 |
return *this; |
| 74 | 77 |
} |
| 75 | 78 |
|
| 76 | 79 |
public: |
| 77 | 80 |
class MapIt : public Item {
|
| 81 |
typedef Item Parent; |
|
| 82 |
|
|
| 78 | 83 |
public: |
| 79 | 84 |
|
| 80 |
typedef Item Parent; |
|
| 81 | 85 |
typedef typename Map::Value Value; |
| 82 | 86 |
|
| 83 | 87 |
MapIt() {}
|
| 84 | 88 |
|
| 85 | 89 |
MapIt(Invalid i) : Parent(i) { }
|
| 86 | 90 |
|
| 87 | 91 |
explicit MapIt(Map& _map) : map(_map) {
|
| 88 | 92 |
map.notifier()->first(*this); |
| 89 | 93 |
} |
| 90 | 94 |
|
| 91 | 95 |
MapIt(const Map& _map, const Item& item) |
| 92 | 96 |
: Parent(item), map(_map) {}
|
| 93 | 97 |
|
| 94 | 98 |
MapIt& operator++() {
|
| 95 | 99 |
map.notifier()->next(*this); |
| 96 | 100 |
return *this; |
| 97 | 101 |
} |
| 98 | 102 |
|
| 99 | 103 |
typename MapTraits<Map>::ConstReturnValue operator*() const {
|
| 100 | 104 |
return map[*this]; |
| 101 | 105 |
} |
| 102 | 106 |
|
| 103 | 107 |
typename MapTraits<Map>::ReturnValue operator*() {
|
| 104 | 108 |
return map[*this]; |
| 105 | 109 |
} |
| 106 | 110 |
|
| 107 | 111 |
void set(const Value& value) {
|
| 108 | 112 |
map.set(*this, value); |
| 109 | 113 |
} |
| 110 | 114 |
|
| 111 | 115 |
protected: |
| 112 | 116 |
Map& map; |
| 113 | 117 |
|
| 114 | 118 |
}; |
| 115 | 119 |
|
| 116 | 120 |
class ConstMapIt : public Item {
|
| 121 |
typedef Item Parent; |
|
| 122 |
|
|
| 117 | 123 |
public: |
| 118 | 124 |
|
| 119 |
typedef Item Parent; |
|
| 120 |
|
|
| 121 | 125 |
typedef typename Map::Value Value; |
| 122 | 126 |
|
| 123 | 127 |
ConstMapIt() {}
|
| 124 | 128 |
|
| 125 | 129 |
ConstMapIt(Invalid i) : Parent(i) { }
|
| 126 | 130 |
|
| 127 | 131 |
explicit ConstMapIt(Map& _map) : map(_map) {
|
| 128 | 132 |
map.notifier()->first(*this); |
| 129 | 133 |
} |
| 130 | 134 |
|
| 131 | 135 |
ConstMapIt(const Map& _map, const Item& item) |
| 132 | 136 |
: Parent(item), map(_map) {}
|
| 133 | 137 |
|
| 134 | 138 |
ConstMapIt& operator++() {
|
| 135 | 139 |
map.notifier()->next(*this); |
| 136 | 140 |
return *this; |
| 137 | 141 |
} |
| 138 | 142 |
|
| 139 | 143 |
typename MapTraits<Map>::ConstReturnValue operator*() const {
|
| 140 | 144 |
return map[*this]; |
| 141 | 145 |
} |
| 142 | 146 |
|
| 143 | 147 |
protected: |
| 144 | 148 |
const Map& map; |
| 145 | 149 |
}; |
| 146 | 150 |
|
| 147 | 151 |
class ItemIt : public Item {
|
| 152 |
typedef Item Parent; |
|
| 153 |
|
|
| 148 | 154 |
public: |
| 149 | 155 |
|
| 150 |
typedef Item Parent; |
|
| 151 |
|
|
| 152 | 156 |
ItemIt() {}
|
| 153 | 157 |
|
| 154 | 158 |
ItemIt(Invalid i) : Parent(i) { }
|
| 155 | 159 |
|
| 156 | 160 |
explicit ItemIt(Map& _map) : map(_map) {
|
| 157 | 161 |
map.notifier()->first(*this); |
| 158 | 162 |
} |
| 159 | 163 |
|
| 160 | 164 |
ItemIt(const Map& _map, const Item& item) |
| 161 | 165 |
: Parent(item), map(_map) {}
|
| 162 | 166 |
|
| 163 | 167 |
ItemIt& operator++() {
|
| 164 | 168 |
map.notifier()->next(*this); |
| 165 | 169 |
return *this; |
| 166 | 170 |
} |
| 167 | 171 |
|
| 168 | 172 |
protected: |
| 169 | 173 |
const Map& map; |
| 170 | 174 |
|
| 171 | 175 |
}; |
| 172 | 176 |
}; |
| 173 | 177 |
|
| 174 | 178 |
// \ingroup graphbits |
| 175 | 179 |
// |
| 176 | 180 |
// \brief Extender for maps which use a subset of the items. |
| 177 | 181 |
template <typename _Graph, typename _Map> |
| 178 | 182 |
class SubMapExtender : public _Map {
|
| 183 |
typedef _Map Parent; |
|
| 184 |
typedef _Graph GraphType; |
|
| 185 |
|
|
| 179 | 186 |
public: |
| 180 | 187 |
|
| 181 |
typedef _Map Parent; |
|
| 182 | 188 |
typedef SubMapExtender Map; |
| 183 |
|
|
| 184 |
typedef _Graph Graph; |
|
| 185 |
|
|
| 186 | 189 |
typedef typename Parent::Key Item; |
| 187 | 190 |
|
| 188 | 191 |
typedef typename Parent::Key Key; |
| 189 | 192 |
typedef typename Parent::Value Value; |
| 193 |
typedef typename Parent::Reference Reference; |
|
| 194 |
typedef typename Parent::ConstReference ConstReference; |
|
| 195 |
|
|
| 196 |
typedef typename Parent::ReferenceMapTag ReferenceMapTag; |
|
| 190 | 197 |
|
| 191 | 198 |
class MapIt; |
| 192 | 199 |
class ConstMapIt; |
| 193 | 200 |
|
| 194 | 201 |
friend class MapIt; |
| 195 | 202 |
friend class ConstMapIt; |
| 196 | 203 |
|
| 197 | 204 |
public: |
| 198 | 205 |
|
| 199 |
SubMapExtender(const |
|
| 206 |
SubMapExtender(const GraphType& _graph) |
|
| 200 | 207 |
: Parent(_graph), graph(_graph) {}
|
| 201 | 208 |
|
| 202 |
SubMapExtender(const |
|
| 209 |
SubMapExtender(const GraphType& _graph, const Value& _value) |
|
| 203 | 210 |
: Parent(_graph, _value), graph(_graph) {}
|
| 204 | 211 |
|
| 205 | 212 |
private: |
| 206 | 213 |
SubMapExtender& operator=(const SubMapExtender& cmap) {
|
| 207 | 214 |
return operator=<MapExtender>(cmap); |
| 208 | 215 |
} |
| 209 | 216 |
|
| 210 | 217 |
template <typename CMap> |
| 211 | 218 |
SubMapExtender& operator=(const CMap& cmap) {
|
| 212 | 219 |
checkConcept<concepts::ReadMap<Key, Value>, CMap>(); |
| 213 | 220 |
Item it; |
| 214 | 221 |
for (graph.first(it); it != INVALID; graph.next(it)) {
|
| 215 | 222 |
Parent::set(it, cmap[it]); |
| 216 | 223 |
} |
| 217 | 224 |
return *this; |
| 218 | 225 |
} |
| 219 | 226 |
|
| 220 | 227 |
public: |
| 221 | 228 |
class MapIt : public Item {
|
| 229 |
typedef Item Parent; |
|
| 230 |
|
|
| 222 | 231 |
public: |
| 223 |
|
|
| 224 |
typedef Item Parent; |
|
| 225 | 232 |
typedef typename Map::Value Value; |
| 226 | 233 |
|
| 227 | 234 |
MapIt() {}
|
| 228 | 235 |
|
| 229 | 236 |
MapIt(Invalid i) : Parent(i) { }
|
| 230 | 237 |
|
| 231 | 238 |
explicit MapIt(Map& _map) : map(_map) {
|
| 232 | 239 |
map.graph.first(*this); |
| 233 | 240 |
} |
| 234 | 241 |
|
| 235 | 242 |
MapIt(const Map& _map, const Item& item) |
| 236 | 243 |
: Parent(item), map(_map) {}
|
| 237 | 244 |
|
| 238 | 245 |
MapIt& operator++() {
|
| 239 | 246 |
map.graph.next(*this); |
| 240 | 247 |
return *this; |
| 241 | 248 |
} |
| 242 | 249 |
|
| 243 | 250 |
typename MapTraits<Map>::ConstReturnValue operator*() const {
|
| 244 | 251 |
return map[*this]; |
| 245 | 252 |
} |
| 246 | 253 |
|
| 247 | 254 |
typename MapTraits<Map>::ReturnValue operator*() {
|
| 248 | 255 |
return map[*this]; |
| 249 | 256 |
} |
| 250 | 257 |
|
| 251 | 258 |
void set(const Value& value) {
|
| 252 | 259 |
map.set(*this, value); |
| 253 | 260 |
} |
| 254 | 261 |
|
| 255 | 262 |
protected: |
| 256 | 263 |
Map& map; |
| 257 | 264 |
|
| 258 | 265 |
}; |
| 259 | 266 |
|
| 260 | 267 |
class ConstMapIt : public Item {
|
| 268 |
typedef Item Parent; |
|
| 269 |
|
|
| 261 | 270 |
public: |
| 262 | 271 |
|
| 263 |
typedef Item Parent; |
|
| 264 |
|
|
| 265 | 272 |
typedef typename Map::Value Value; |
| 266 | 273 |
|
| 267 | 274 |
ConstMapIt() {}
|
| 268 | 275 |
|
| 269 | 276 |
ConstMapIt(Invalid i) : Parent(i) { }
|
| 270 | 277 |
|
| 271 | 278 |
explicit ConstMapIt(Map& _map) : map(_map) {
|
| 272 | 279 |
map.graph.first(*this); |
| 273 | 280 |
} |
| 274 | 281 |
|
| 275 | 282 |
ConstMapIt(const Map& _map, const Item& item) |
| 276 | 283 |
: Parent(item), map(_map) {}
|
| 277 | 284 |
|
| 278 | 285 |
ConstMapIt& operator++() {
|
| 279 | 286 |
map.graph.next(*this); |
| 280 | 287 |
return *this; |
| 281 | 288 |
} |
| 282 | 289 |
|
| 283 | 290 |
typename MapTraits<Map>::ConstReturnValue operator*() const {
|
| 284 | 291 |
return map[*this]; |
| 285 | 292 |
} |
| 286 | 293 |
|
| 287 | 294 |
protected: |
| 288 | 295 |
const Map& map; |
| 289 | 296 |
}; |
| 290 | 297 |
|
| 291 | 298 |
class ItemIt : public Item {
|
| 299 |
typedef Item Parent; |
|
| 300 |
|
|
| 292 | 301 |
public: |
| 293 | 302 |
|
| 294 |
typedef Item Parent; |
|
| 295 |
|
|
| 296 | 303 |
ItemIt() {}
|
| 297 | 304 |
|
| 298 | 305 |
ItemIt(Invalid i) : Parent(i) { }
|
| 299 | 306 |
|
| 300 | 307 |
explicit ItemIt(Map& _map) : map(_map) {
|
| 301 | 308 |
map.graph.first(*this); |
| 302 | 309 |
} |
| 303 | 310 |
|
| 304 | 311 |
ItemIt(const Map& _map, const Item& item) |
| 305 | 312 |
: Parent(item), map(_map) {}
|
| 306 | 313 |
|
| 307 | 314 |
ItemIt& operator++() {
|
| 308 | 315 |
map.graph.next(*this); |
| 309 | 316 |
return *this; |
| 310 | 317 |
} |
| 311 | 318 |
|
| 312 | 319 |
protected: |
| 313 | 320 |
const Map& map; |
| 314 | 321 |
|
| 315 | 322 |
}; |
| 316 | 323 |
|
| 317 | 324 |
private: |
| 318 | 325 |
|
| 319 |
const |
|
| 326 |
const GraphType& graph; |
|
| 320 | 327 |
|
| 321 | 328 |
}; |
| 322 | 329 |
|
| 323 | 330 |
} |
| 324 | 331 |
|
| 325 | 332 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 |
#ifndef LEMON_BITS_PRED_MAP_PATH_H |
|
| 20 |
#define LEMON_BITS_PRED_MAP_PATH_H |
|
| 19 |
#ifndef LEMON_BITS_PATH_DUMP_H |
|
| 20 |
#define LEMON_BITS_PATH_DUMP_H |
|
| 21 |
|
|
| 22 |
#include <lemon/core.h> |
|
| 23 |
#include <lemon/concept_check.h> |
|
| 21 | 24 |
|
| 22 | 25 |
namespace lemon {
|
| 23 | 26 |
|
| 24 | 27 |
template <typename _Digraph, typename _PredMap> |
| 25 | 28 |
class PredMapPath {
|
| 26 | 29 |
public: |
| 27 | 30 |
typedef True RevPathTag; |
| 28 | 31 |
|
| 29 | 32 |
typedef _Digraph Digraph; |
| 30 | 33 |
typedef typename Digraph::Arc Arc; |
| 31 | 34 |
typedef _PredMap PredMap; |
| 32 | 35 |
|
| 33 | 36 |
PredMapPath(const Digraph& _digraph, const PredMap& _predMap, |
| 34 | 37 |
typename Digraph::Node _target) |
| 35 | 38 |
: digraph(_digraph), predMap(_predMap), target(_target) {}
|
| 36 | 39 |
|
| 37 | 40 |
int length() const {
|
| 38 | 41 |
int len = 0; |
| 39 | 42 |
typename Digraph::Node node = target; |
| 40 | 43 |
typename Digraph::Arc arc; |
| 41 | 44 |
while ((arc = predMap[node]) != INVALID) {
|
| 42 | 45 |
node = digraph.source(arc); |
| 43 | 46 |
++len; |
| 44 | 47 |
} |
| 45 | 48 |
return len; |
| 46 | 49 |
} |
| 47 | 50 |
|
| 48 | 51 |
bool empty() const {
|
| 49 | 52 |
return predMap[target] != INVALID; |
| 50 | 53 |
} |
| 51 | 54 |
|
| 52 | 55 |
class RevArcIt {
|
| 53 | 56 |
public: |
| 54 | 57 |
RevArcIt() {}
|
| 55 | 58 |
RevArcIt(Invalid) : path(0), current(INVALID) {}
|
| 56 | 59 |
RevArcIt(const PredMapPath& _path) |
| 57 | 60 |
: path(&_path), current(_path.target) {
|
| 58 | 61 |
if (path->predMap[current] == INVALID) current = INVALID; |
| 59 | 62 |
} |
| 60 | 63 |
|
| 61 | 64 |
operator const typename Digraph::Arc() const {
|
| 62 | 65 |
return path->predMap[current]; |
| 63 | 66 |
} |
| 64 | 67 |
|
| 65 | 68 |
RevArcIt& operator++() {
|
| 66 | 69 |
current = path->digraph.source(path->predMap[current]); |
| 67 | 70 |
if (path->predMap[current] == INVALID) current = INVALID; |
| 68 | 71 |
return *this; |
| 69 | 72 |
} |
| 70 | 73 |
|
| 71 | 74 |
bool operator==(const RevArcIt& e) const {
|
| 72 | 75 |
return current == e.current; |
| 73 | 76 |
} |
| 74 | 77 |
|
| 75 | 78 |
bool operator!=(const RevArcIt& e) const {
|
| 76 | 79 |
return current != e.current; |
| 77 | 80 |
} |
| 78 | 81 |
|
| 79 | 82 |
bool operator<(const RevArcIt& e) const {
|
| 80 | 83 |
return current < e.current; |
| 81 | 84 |
} |
| 82 | 85 |
|
| 83 | 86 |
private: |
| 84 | 87 |
const PredMapPath* path; |
| 85 | 88 |
typename Digraph::Node current; |
| 86 | 89 |
}; |
| 87 | 90 |
|
| 88 | 91 |
private: |
| 89 | 92 |
const Digraph& digraph; |
| 90 | 93 |
const PredMap& predMap; |
| 91 | 94 |
typename Digraph::Node target; |
| 92 | 95 |
}; |
| 93 | 96 |
|
| 94 | 97 |
|
| 95 | 98 |
template <typename _Digraph, typename _PredMatrixMap> |
| 96 | 99 |
class PredMatrixMapPath {
|
| 97 | 100 |
public: |
| 98 | 101 |
typedef True RevPathTag; |
| 99 | 102 |
|
| 100 | 103 |
typedef _Digraph Digraph; |
| 101 | 104 |
typedef typename Digraph::Arc Arc; |
| 102 | 105 |
typedef _PredMatrixMap PredMatrixMap; |
| 103 | 106 |
|
| 104 | 107 |
PredMatrixMapPath(const Digraph& _digraph, |
| 105 | 108 |
const PredMatrixMap& _predMatrixMap, |
| 106 | 109 |
typename Digraph::Node _source, |
| 107 | 110 |
typename Digraph::Node _target) |
| 108 | 111 |
: digraph(_digraph), predMatrixMap(_predMatrixMap), |
| 109 | 112 |
source(_source), target(_target) {}
|
| 110 | 113 |
|
| 111 | 114 |
int length() const {
|
| 112 | 115 |
int len = 0; |
| 113 | 116 |
typename Digraph::Node node = target; |
| 114 | 117 |
typename Digraph::Arc arc; |
| 115 | 118 |
while ((arc = predMatrixMap(source, node)) != INVALID) {
|
| 116 | 119 |
node = digraph.source(arc); |
| 117 | 120 |
++len; |
| 118 | 121 |
} |
| 119 | 122 |
return len; |
| 120 | 123 |
} |
| 121 | 124 |
|
| 122 | 125 |
bool empty() const {
|
| 123 | 126 |
return source != target; |
| 124 | 127 |
} |
| 125 | 128 |
|
| 126 | 129 |
class RevArcIt {
|
| 127 | 130 |
public: |
| 128 | 131 |
RevArcIt() {}
|
| 129 | 132 |
RevArcIt(Invalid) : path(0), current(INVALID) {}
|
| 130 | 133 |
RevArcIt(const PredMatrixMapPath& _path) |
| 131 | 134 |
: path(&_path), current(_path.target) {
|
| 132 | 135 |
if (path->predMatrixMap(path->source, current) == INVALID) |
| 133 | 136 |
current = INVALID; |
| 134 | 137 |
} |
| 135 | 138 |
|
| 136 | 139 |
operator const typename Digraph::Arc() const {
|
| 137 | 140 |
return path->predMatrixMap(path->source, current); |
| 138 | 141 |
} |
| 139 | 142 |
|
| 140 | 143 |
RevArcIt& operator++() {
|
| 141 | 144 |
current = |
| 142 | 145 |
path->digraph.source(path->predMatrixMap(path->source, current)); |
| 143 | 146 |
if (path->predMatrixMap(path->source, current) == INVALID) |
| 144 | 147 |
current = INVALID; |
| 145 | 148 |
return *this; |
| 146 | 149 |
} |
| 147 | 150 |
|
| 148 | 151 |
bool operator==(const RevArcIt& e) const {
|
| 149 | 152 |
return current == e.current; |
| 150 | 153 |
} |
| 151 | 154 |
|
| 152 | 155 |
bool operator!=(const RevArcIt& e) const {
|
| 153 | 156 |
return current != e.current; |
| 154 | 157 |
} |
| 155 | 158 |
|
| 156 | 159 |
bool operator<(const RevArcIt& e) const {
|
| 157 | 160 |
return current < e.current; |
| 158 | 161 |
} |
| 159 | 162 |
|
| 160 | 163 |
private: |
| 161 | 164 |
const PredMatrixMapPath* path; |
| 162 | 165 |
typename Digraph::Node current; |
| 163 | 166 |
}; |
| 164 | 167 |
|
| 165 | 168 |
private: |
| 166 | 169 |
const Digraph& digraph; |
| 167 | 170 |
const PredMatrixMap& predMatrixMap; |
| 168 | 171 |
typename Digraph::Node source; |
| 169 | 172 |
typename Digraph::Node target; |
| 170 | 173 |
}; |
| 171 | 174 |
|
| 172 | 175 |
} |
| 173 | 176 |
|
| 174 | 177 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2008 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_BITS_SOLVER_BITS_H |
| 20 | 20 |
#define LEMON_BITS_SOLVER_BITS_H |
| 21 | 21 |
|
| 22 |
#include <vector> |
|
| 23 |
|
|
| 22 | 24 |
namespace lemon {
|
| 23 | 25 |
|
| 24 | 26 |
namespace _solver_bits {
|
| 25 | 27 |
|
| 26 | 28 |
class VarIndex {
|
| 27 | 29 |
private: |
| 28 | 30 |
struct ItemT {
|
| 29 | 31 |
int prev, next; |
| 30 | 32 |
int index; |
| 31 | 33 |
}; |
| 32 | 34 |
std::vector<ItemT> items; |
| 33 | 35 |
int first_item, last_item, first_free_item; |
| 34 | 36 |
|
| 35 | 37 |
std::vector<int> cross; |
| 36 | 38 |
|
| 37 | 39 |
public: |
| 38 | 40 |
|
| 39 | 41 |
VarIndex() |
| 40 | 42 |
: first_item(-1), last_item(-1), first_free_item(-1) {
|
| 41 | 43 |
} |
| 42 | 44 |
|
| 43 | 45 |
void clear() {
|
| 44 | 46 |
first_item = -1; |
| 45 | 47 |
first_free_item = -1; |
| 46 | 48 |
items.clear(); |
| 47 | 49 |
cross.clear(); |
| 48 | 50 |
} |
| 49 | 51 |
|
| 50 | 52 |
int addIndex(int idx) {
|
| 51 | 53 |
int n; |
| 52 | 54 |
if (first_free_item == -1) {
|
| 53 | 55 |
n = items.size(); |
| 54 | 56 |
items.push_back(ItemT()); |
| 55 | 57 |
} else {
|
| 56 | 58 |
n = first_free_item; |
| 57 | 59 |
first_free_item = items[n].next; |
| 58 | 60 |
if (first_free_item != -1) {
|
| 59 | 61 |
items[first_free_item].prev = -1; |
| 60 | 62 |
} |
| 61 | 63 |
} |
| 62 | 64 |
items[n].index = idx; |
| 63 | 65 |
if (static_cast<int>(cross.size()) <= idx) {
|
| 64 | 66 |
cross.resize(idx + 1, -1); |
| 65 | 67 |
} |
| 66 | 68 |
cross[idx] = n; |
| 67 | 69 |
|
| 68 | 70 |
items[n].prev = last_item; |
| 69 | 71 |
items[n].next = -1; |
| 70 | 72 |
if (last_item != -1) {
|
| 71 | 73 |
items[last_item].next = n; |
| 72 | 74 |
} else {
|
| 73 | 75 |
first_item = n; |
| 74 | 76 |
} |
| 75 | 77 |
last_item = n; |
| 76 | 78 |
|
| 77 | 79 |
return n; |
| 78 | 80 |
} |
| 79 | 81 |
|
| 80 | 82 |
int addIndex(int idx, int n) {
|
| 81 | 83 |
while (n >= static_cast<int>(items.size())) {
|
| 82 | 84 |
items.push_back(ItemT()); |
| 83 | 85 |
items.back().prev = -1; |
| 84 | 86 |
items.back().next = first_free_item; |
| 85 | 87 |
if (first_free_item != -1) {
|
| 86 | 88 |
items[first_free_item].prev = items.size() - 1; |
| 87 | 89 |
} |
| 88 | 90 |
first_free_item = items.size() - 1; |
| 89 | 91 |
} |
| 90 | 92 |
if (items[n].next != -1) {
|
| 91 | 93 |
items[items[n].next].prev = items[n].prev; |
| 92 | 94 |
} |
| 93 | 95 |
if (items[n].prev != -1) {
|
| 94 | 96 |
items[items[n].prev].next = items[n].next; |
| 95 | 97 |
} else {
|
| 96 | 98 |
first_free_item = items[n].next; |
| 97 | 99 |
} |
| 98 | 100 |
|
| 99 | 101 |
items[n].index = idx; |
| 100 | 102 |
if (static_cast<int>(cross.size()) <= idx) {
|
| 101 | 103 |
cross.resize(idx + 1, -1); |
| 102 | 104 |
} |
| 103 | 105 |
cross[idx] = n; |
| 104 | 106 |
|
| 105 | 107 |
items[n].prev = last_item; |
| 106 | 108 |
items[n].next = -1; |
| 107 | 109 |
if (last_item != -1) {
|
| 108 | 110 |
items[last_item].next = n; |
| 109 | 111 |
} else {
|
| 110 | 112 |
first_item = n; |
| 111 | 113 |
} |
| 112 | 114 |
last_item = n; |
| 113 | 115 |
|
| 114 | 116 |
return n; |
| 115 | 117 |
} |
| 116 | 118 |
|
| 117 | 119 |
void eraseIndex(int idx) {
|
| 118 | 120 |
int n = cross[idx]; |
| 119 | 121 |
|
| 120 | 122 |
if (items[n].prev != -1) {
|
| 121 | 123 |
items[items[n].prev].next = items[n].next; |
| 122 | 124 |
} else {
|
| 123 | 125 |
first_item = items[n].next; |
| 124 | 126 |
} |
| 125 | 127 |
if (items[n].next != -1) {
|
| 126 | 128 |
items[items[n].next].prev = items[n].prev; |
| 127 | 129 |
} else {
|
| 128 | 130 |
last_item = items[n].prev; |
| 129 | 131 |
} |
| 130 | 132 |
|
| 131 | 133 |
if (first_free_item != -1) {
|
| 132 | 134 |
items[first_free_item].prev = n; |
| 133 | 135 |
} |
| 134 | 136 |
items[n].next = first_free_item; |
| 135 | 137 |
items[n].prev = -1; |
| 136 | 138 |
first_free_item = n; |
| 137 | 139 |
|
| 138 | 140 |
while (!cross.empty() && cross.back() == -1) {
|
| 139 | 141 |
cross.pop_back(); |
| 140 | 142 |
} |
| 141 | 143 |
} |
| 142 | 144 |
|
| 143 | 145 |
int maxIndex() const {
|
| 144 | 146 |
return cross.size() - 1; |
| 145 | 147 |
} |
| 146 | 148 |
|
| 147 | 149 |
void shiftIndices(int idx) {
|
| 148 | 150 |
for (int i = idx + 1; i < static_cast<int>(cross.size()); ++i) {
|
| 149 | 151 |
cross[i - 1] = cross[i]; |
| 150 | 152 |
if (cross[i] != -1) {
|
| 151 | 153 |
--items[cross[i]].index; |
| 152 | 154 |
} |
| 153 | 155 |
} |
| 154 | 156 |
cross.back() = -1; |
| 155 | 157 |
cross.pop_back(); |
| 156 | 158 |
while (!cross.empty() && cross.back() == -1) {
|
| 157 | 159 |
cross.pop_back(); |
| 158 | 160 |
} |
| 159 | 161 |
} |
| 160 | 162 |
|
| 161 | 163 |
void relocateIndex(int idx, int jdx) {
|
| 162 | 164 |
cross[idx] = cross[jdx]; |
| 163 | 165 |
items[cross[jdx]].index = idx; |
| 164 | 166 |
cross[jdx] = -1; |
| 165 | 167 |
|
| 166 | 168 |
while (!cross.empty() && cross.back() == -1) {
|
| 167 | 169 |
cross.pop_back(); |
| 168 | 170 |
} |
| 169 | 171 |
} |
| 170 | 172 |
|
| 171 | 173 |
int operator[](int idx) const {
|
| 172 | 174 |
return cross[idx]; |
| 173 | 175 |
} |
| 174 | 176 |
|
| 175 | 177 |
int operator()(int fdx) const {
|
| 176 | 178 |
return items[fdx].index; |
| 177 | 179 |
} |
| 178 | 180 |
|
| 179 | 181 |
void firstItem(int& fdx) const {
|
| 180 | 182 |
fdx = first_item; |
| 181 | 183 |
} |
| 182 | 184 |
|
| 183 | 185 |
void nextItem(int& fdx) const {
|
| 184 | 186 |
fdx = items[fdx].next; |
| 185 | 187 |
} |
| 186 | 188 |
|
| 187 | 189 |
}; |
| 188 | 190 |
} |
| 189 | 191 |
} |
| 190 | 192 |
|
| 191 | 193 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_BITS_TRAITS_H |
| 20 | 20 |
#define LEMON_BITS_TRAITS_H |
| 21 | 21 |
|
| 22 | 22 |
//\file |
| 23 | 23 |
//\brief Traits for graphs and maps |
| 24 | 24 |
// |
| 25 | 25 |
|
| 26 | 26 |
#include <lemon/bits/enable_if.h> |
| 27 | 27 |
|
| 28 | 28 |
namespace lemon {
|
| 29 | 29 |
|
| 30 | 30 |
struct InvalidType {};
|
| 31 | 31 |
|
| 32 |
template <typename |
|
| 32 |
template <typename GR, typename _Item> |
|
| 33 | 33 |
class ItemSetTraits {};
|
| 34 | 34 |
|
| 35 | 35 |
|
| 36 |
template <typename |
|
| 36 |
template <typename GR, typename Enable = void> |
|
| 37 | 37 |
struct NodeNotifierIndicator {
|
| 38 | 38 |
typedef InvalidType Type; |
| 39 | 39 |
}; |
| 40 |
template <typename |
|
| 40 |
template <typename GR> |
|
| 41 | 41 |
struct NodeNotifierIndicator< |
| 42 |
Graph, |
|
| 43 |
typename enable_if<typename Graph::NodeNotifier::Notifier, void>::type |
|
| 42 |
GR, |
|
| 43 |
typename enable_if<typename GR::NodeNotifier::Notifier, void>::type |
|
| 44 | 44 |
> {
|
| 45 |
typedef typename |
|
| 45 |
typedef typename GR::NodeNotifier Type; |
|
| 46 | 46 |
}; |
| 47 | 47 |
|
| 48 |
template <typename _Graph> |
|
| 49 |
class ItemSetTraits<_Graph, typename _Graph::Node> {
|
|
| 48 |
template <typename GR> |
|
| 49 |
class ItemSetTraits<GR, typename GR::Node> {
|
|
| 50 | 50 |
public: |
| 51 | 51 |
|
| 52 |
typedef |
|
| 52 |
typedef GR Graph; |
|
| 53 |
typedef GR Digraph; |
|
| 53 | 54 |
|
| 54 |
typedef typename Graph::Node Item; |
|
| 55 |
typedef typename Graph::NodeIt ItemIt; |
|
| 55 |
typedef typename GR::Node Item; |
|
| 56 |
typedef typename GR::NodeIt ItemIt; |
|
| 56 | 57 |
|
| 57 |
typedef typename NodeNotifierIndicator< |
|
| 58 |
typedef typename NodeNotifierIndicator<GR>::Type ItemNotifier; |
|
| 58 | 59 |
|
| 59 |
template <typename _Value> |
|
| 60 |
class Map : public Graph::template NodeMap<_Value> {
|
|
| 60 |
template <typename V> |
|
| 61 |
class Map : public GR::template NodeMap<V> {
|
|
| 62 |
typedef typename GR::template NodeMap<V> Parent; |
|
| 63 |
|
|
| 61 | 64 |
public: |
| 62 |
typedef typename Graph::template NodeMap<_Value> Parent; |
|
| 63 |
typedef typename Graph::template NodeMap<_Value> Type; |
|
| 65 |
typedef typename GR::template NodeMap<V> Type; |
|
| 64 | 66 |
typedef typename Parent::Value Value; |
| 65 | 67 |
|
| 66 |
Map(const Graph& _digraph) : Parent(_digraph) {}
|
|
| 67 |
Map(const Graph& _digraph, const Value& _value) |
|
| 68 |
Map(const GR& _digraph) : Parent(_digraph) {}
|
|
| 69 |
Map(const GR& _digraph, const Value& _value) |
|
| 68 | 70 |
: Parent(_digraph, _value) {}
|
| 69 | 71 |
|
| 70 | 72 |
}; |
| 71 | 73 |
|
| 72 | 74 |
}; |
| 73 | 75 |
|
| 74 |
template <typename |
|
| 76 |
template <typename GR, typename Enable = void> |
|
| 75 | 77 |
struct ArcNotifierIndicator {
|
| 76 | 78 |
typedef InvalidType Type; |
| 77 | 79 |
}; |
| 78 |
template <typename |
|
| 80 |
template <typename GR> |
|
| 79 | 81 |
struct ArcNotifierIndicator< |
| 80 |
Graph, |
|
| 81 |
typename enable_if<typename Graph::ArcNotifier::Notifier, void>::type |
|
| 82 |
GR, |
|
| 83 |
typename enable_if<typename GR::ArcNotifier::Notifier, void>::type |
|
| 82 | 84 |
> {
|
| 83 |
typedef typename |
|
| 85 |
typedef typename GR::ArcNotifier Type; |
|
| 84 | 86 |
}; |
| 85 | 87 |
|
| 86 |
template <typename _Graph> |
|
| 87 |
class ItemSetTraits<_Graph, typename _Graph::Arc> {
|
|
| 88 |
template <typename GR> |
|
| 89 |
class ItemSetTraits<GR, typename GR::Arc> {
|
|
| 88 | 90 |
public: |
| 89 | 91 |
|
| 90 |
typedef |
|
| 92 |
typedef GR Graph; |
|
| 93 |
typedef GR Digraph; |
|
| 91 | 94 |
|
| 92 |
typedef typename Graph::Arc Item; |
|
| 93 |
typedef typename Graph::ArcIt ItemIt; |
|
| 95 |
typedef typename GR::Arc Item; |
|
| 96 |
typedef typename GR::ArcIt ItemIt; |
|
| 94 | 97 |
|
| 95 |
typedef typename ArcNotifierIndicator< |
|
| 98 |
typedef typename ArcNotifierIndicator<GR>::Type ItemNotifier; |
|
| 96 | 99 |
|
| 97 |
template <typename _Value> |
|
| 98 |
class Map : public Graph::template ArcMap<_Value> {
|
|
| 100 |
template <typename V> |
|
| 101 |
class Map : public GR::template ArcMap<V> {
|
|
| 102 |
typedef typename GR::template ArcMap<V> Parent; |
|
| 103 |
|
|
| 99 | 104 |
public: |
| 100 |
typedef typename Graph::template ArcMap<_Value> Parent; |
|
| 101 |
typedef typename Graph::template ArcMap<_Value> Type; |
|
| 105 |
typedef typename GR::template ArcMap<V> Type; |
|
| 102 | 106 |
typedef typename Parent::Value Value; |
| 103 | 107 |
|
| 104 |
Map(const Graph& _digraph) : Parent(_digraph) {}
|
|
| 105 |
Map(const Graph& _digraph, const Value& _value) |
|
| 108 |
Map(const GR& _digraph) : Parent(_digraph) {}
|
|
| 109 |
Map(const GR& _digraph, const Value& _value) |
|
| 106 | 110 |
: Parent(_digraph, _value) {}
|
| 107 | 111 |
}; |
| 108 | 112 |
|
| 109 | 113 |
}; |
| 110 | 114 |
|
| 111 |
template <typename |
|
| 115 |
template <typename GR, typename Enable = void> |
|
| 112 | 116 |
struct EdgeNotifierIndicator {
|
| 113 | 117 |
typedef InvalidType Type; |
| 114 | 118 |
}; |
| 115 |
template <typename |
|
| 119 |
template <typename GR> |
|
| 116 | 120 |
struct EdgeNotifierIndicator< |
| 117 |
Graph, |
|
| 118 |
typename enable_if<typename Graph::EdgeNotifier::Notifier, void>::type |
|
| 121 |
GR, |
|
| 122 |
typename enable_if<typename GR::EdgeNotifier::Notifier, void>::type |
|
| 119 | 123 |
> {
|
| 120 |
typedef typename |
|
| 124 |
typedef typename GR::EdgeNotifier Type; |
|
| 121 | 125 |
}; |
| 122 | 126 |
|
| 123 |
template <typename _Graph> |
|
| 124 |
class ItemSetTraits<_Graph, typename _Graph::Edge> {
|
|
| 127 |
template <typename GR> |
|
| 128 |
class ItemSetTraits<GR, typename GR::Edge> {
|
|
| 125 | 129 |
public: |
| 126 | 130 |
|
| 127 |
typedef |
|
| 131 |
typedef GR Graph; |
|
| 132 |
typedef GR Digraph; |
|
| 128 | 133 |
|
| 129 |
typedef typename Graph::Edge Item; |
|
| 130 |
typedef typename Graph::EdgeIt ItemIt; |
|
| 134 |
typedef typename GR::Edge Item; |
|
| 135 |
typedef typename GR::EdgeIt ItemIt; |
|
| 131 | 136 |
|
| 132 |
typedef typename EdgeNotifierIndicator< |
|
| 137 |
typedef typename EdgeNotifierIndicator<GR>::Type ItemNotifier; |
|
| 133 | 138 |
|
| 134 |
template <typename _Value> |
|
| 135 |
class Map : public Graph::template EdgeMap<_Value> {
|
|
| 139 |
template <typename V> |
|
| 140 |
class Map : public GR::template EdgeMap<V> {
|
|
| 141 |
typedef typename GR::template EdgeMap<V> Parent; |
|
| 142 |
|
|
| 136 | 143 |
public: |
| 137 |
typedef typename Graph::template EdgeMap<_Value> Parent; |
|
| 138 |
typedef typename Graph::template EdgeMap<_Value> Type; |
|
| 144 |
typedef typename GR::template EdgeMap<V> Type; |
|
| 139 | 145 |
typedef typename Parent::Value Value; |
| 140 | 146 |
|
| 141 |
Map(const Graph& _digraph) : Parent(_digraph) {}
|
|
| 142 |
Map(const Graph& _digraph, const Value& _value) |
|
| 147 |
Map(const GR& _digraph) : Parent(_digraph) {}
|
|
| 148 |
Map(const GR& _digraph, const Value& _value) |
|
| 143 | 149 |
: Parent(_digraph, _value) {}
|
| 144 | 150 |
}; |
| 145 | 151 |
|
| 146 | 152 |
}; |
| 147 | 153 |
|
| 148 | 154 |
template <typename Map, typename Enable = void> |
| 149 | 155 |
struct MapTraits {
|
| 150 | 156 |
typedef False ReferenceMapTag; |
| 151 | 157 |
|
| 152 | 158 |
typedef typename Map::Key Key; |
| 153 | 159 |
typedef typename Map::Value Value; |
| 154 | 160 |
|
| 155 | 161 |
typedef Value ConstReturnValue; |
| 156 | 162 |
typedef Value ReturnValue; |
| 157 | 163 |
}; |
| 158 | 164 |
|
| 159 | 165 |
template <typename Map> |
| 160 | 166 |
struct MapTraits< |
| 161 | 167 |
Map, typename enable_if<typename Map::ReferenceMapTag, void>::type > |
| 162 | 168 |
{
|
| 163 | 169 |
typedef True ReferenceMapTag; |
| 164 | 170 |
|
| 165 | 171 |
typedef typename Map::Key Key; |
| 166 | 172 |
typedef typename Map::Value Value; |
| 167 | 173 |
|
| 168 | 174 |
typedef typename Map::ConstReference ConstReturnValue; |
| 169 | 175 |
typedef typename Map::Reference ReturnValue; |
| 170 | 176 |
|
| 171 | 177 |
typedef typename Map::ConstReference ConstReference; |
| 172 | 178 |
typedef typename Map::Reference Reference; |
| 173 | 179 |
}; |
| 174 | 180 |
|
| 175 | 181 |
template <typename MatrixMap, typename Enable = void> |
| 176 | 182 |
struct MatrixMapTraits {
|
| 177 | 183 |
typedef False ReferenceMapTag; |
| 178 | 184 |
|
| 179 | 185 |
typedef typename MatrixMap::FirstKey FirstKey; |
| 180 | 186 |
typedef typename MatrixMap::SecondKey SecondKey; |
| 181 | 187 |
typedef typename MatrixMap::Value Value; |
| 182 | 188 |
|
| 183 | 189 |
typedef Value ConstReturnValue; |
| 184 | 190 |
typedef Value ReturnValue; |
| 185 | 191 |
}; |
| 186 | 192 |
|
| 187 | 193 |
template <typename MatrixMap> |
| 188 | 194 |
struct MatrixMapTraits< |
| 189 | 195 |
MatrixMap, typename enable_if<typename MatrixMap::ReferenceMapTag, |
| 190 | 196 |
void>::type > |
| 191 | 197 |
{
|
| 192 | 198 |
typedef True ReferenceMapTag; |
| 193 | 199 |
|
| 194 | 200 |
typedef typename MatrixMap::FirstKey FirstKey; |
| 195 | 201 |
typedef typename MatrixMap::SecondKey SecondKey; |
| 196 | 202 |
typedef typename MatrixMap::Value Value; |
| 197 | 203 |
|
| 198 | 204 |
typedef typename MatrixMap::ConstReference ConstReturnValue; |
| 199 | 205 |
typedef typename MatrixMap::Reference ReturnValue; |
| 200 | 206 |
|
| 201 | 207 |
typedef typename MatrixMap::ConstReference ConstReference; |
| 202 | 208 |
typedef typename MatrixMap::Reference Reference; |
| 203 | 209 |
}; |
| 204 | 210 |
|
| 205 | 211 |
// Indicators for the tags |
| 206 | 212 |
|
| 207 |
template <typename |
|
| 213 |
template <typename GR, typename Enable = void> |
|
| 208 | 214 |
struct NodeNumTagIndicator {
|
| 209 | 215 |
static const bool value = false; |
| 210 | 216 |
}; |
| 211 | 217 |
|
| 212 |
template <typename |
|
| 218 |
template <typename GR> |
|
| 213 | 219 |
struct NodeNumTagIndicator< |
| 214 |
Graph, |
|
| 215 |
typename enable_if<typename Graph::NodeNumTag, void>::type |
|
| 220 |
GR, |
|
| 221 |
typename enable_if<typename GR::NodeNumTag, void>::type |
|
| 216 | 222 |
> {
|
| 217 | 223 |
static const bool value = true; |
| 218 | 224 |
}; |
| 219 | 225 |
|
| 220 |
template <typename |
|
| 226 |
template <typename GR, typename Enable = void> |
|
| 221 | 227 |
struct ArcNumTagIndicator {
|
| 222 | 228 |
static const bool value = false; |
| 223 | 229 |
}; |
| 224 | 230 |
|
| 225 |
template <typename |
|
| 231 |
template <typename GR> |
|
| 226 | 232 |
struct ArcNumTagIndicator< |
| 227 |
Graph, |
|
| 228 |
typename enable_if<typename Graph::ArcNumTag, void>::type |
|
| 233 |
GR, |
|
| 234 |
typename enable_if<typename GR::ArcNumTag, void>::type |
|
| 229 | 235 |
> {
|
| 230 | 236 |
static const bool value = true; |
| 231 | 237 |
}; |
| 232 | 238 |
|
| 233 |
template <typename |
|
| 239 |
template <typename GR, typename Enable = void> |
|
| 234 | 240 |
struct EdgeNumTagIndicator {
|
| 235 | 241 |
static const bool value = false; |
| 236 | 242 |
}; |
| 237 | 243 |
|
| 238 |
template <typename |
|
| 244 |
template <typename GR> |
|
| 239 | 245 |
struct EdgeNumTagIndicator< |
| 240 |
Graph, |
|
| 241 |
typename enable_if<typename Graph::EdgeNumTag, void>::type |
|
| 246 |
GR, |
|
| 247 |
typename enable_if<typename GR::EdgeNumTag, void>::type |
|
| 242 | 248 |
> {
|
| 243 | 249 |
static const bool value = true; |
| 244 | 250 |
}; |
| 245 | 251 |
|
| 246 |
template <typename |
|
| 252 |
template <typename GR, typename Enable = void> |
|
| 247 | 253 |
struct FindArcTagIndicator {
|
| 248 | 254 |
static const bool value = false; |
| 249 | 255 |
}; |
| 250 | 256 |
|
| 251 |
template <typename |
|
| 257 |
template <typename GR> |
|
| 252 | 258 |
struct FindArcTagIndicator< |
| 253 |
Graph, |
|
| 254 |
typename enable_if<typename Graph::FindArcTag, void>::type |
|
| 259 |
GR, |
|
| 260 |
typename enable_if<typename GR::FindArcTag, void>::type |
|
| 255 | 261 |
> {
|
| 256 | 262 |
static const bool value = true; |
| 257 | 263 |
}; |
| 258 | 264 |
|
| 259 |
template <typename |
|
| 265 |
template <typename GR, typename Enable = void> |
|
| 260 | 266 |
struct FindEdgeTagIndicator {
|
| 261 | 267 |
static const bool value = false; |
| 262 | 268 |
}; |
| 263 | 269 |
|
| 264 |
template <typename |
|
| 270 |
template <typename GR> |
|
| 265 | 271 |
struct FindEdgeTagIndicator< |
| 266 |
Graph, |
|
| 267 |
typename enable_if<typename Graph::FindEdgeTag, void>::type |
|
| 272 |
GR, |
|
| 273 |
typename enable_if<typename GR::FindEdgeTag, void>::type |
|
| 268 | 274 |
> {
|
| 269 | 275 |
static const bool value = true; |
| 270 | 276 |
}; |
| 271 | 277 |
|
| 272 |
template <typename |
|
| 278 |
template <typename GR, typename Enable = void> |
|
| 273 | 279 |
struct UndirectedTagIndicator {
|
| 274 | 280 |
static const bool value = false; |
| 275 | 281 |
}; |
| 276 | 282 |
|
| 277 |
template <typename |
|
| 283 |
template <typename GR> |
|
| 278 | 284 |
struct UndirectedTagIndicator< |
| 279 |
Graph, |
|
| 280 |
typename enable_if<typename Graph::UndirectedTag, void>::type |
|
| 285 |
GR, |
|
| 286 |
typename enable_if<typename GR::UndirectedTag, void>::type |
|
| 281 | 287 |
> {
|
| 282 | 288 |
static const bool value = true; |
| 283 | 289 |
}; |
| 284 | 290 |
|
| 285 |
template <typename |
|
| 291 |
template <typename GR, typename Enable = void> |
|
| 286 | 292 |
struct BuildTagIndicator {
|
| 287 | 293 |
static const bool value = false; |
| 288 | 294 |
}; |
| 289 | 295 |
|
| 290 |
template <typename |
|
| 296 |
template <typename GR> |
|
| 291 | 297 |
struct BuildTagIndicator< |
| 292 |
Graph, |
|
| 293 |
typename enable_if<typename Graph::BuildTag, void>::type |
|
| 298 |
GR, |
|
| 299 |
typename enable_if<typename GR::BuildTag, void>::type |
|
| 294 | 300 |
> {
|
| 295 | 301 |
static const bool value = true; |
| 296 | 302 |
}; |
| 297 | 303 |
|
| 298 | 304 |
} |
| 299 | 305 |
|
| 300 | 306 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_BITS_VECTOR_MAP_H |
| 20 | 20 |
#define LEMON_BITS_VECTOR_MAP_H |
| 21 | 21 |
|
| 22 | 22 |
#include <vector> |
| 23 | 23 |
#include <algorithm> |
| 24 | 24 |
|
| 25 | 25 |
#include <lemon/core.h> |
| 26 | 26 |
#include <lemon/bits/alteration_notifier.h> |
| 27 | 27 |
|
| 28 | 28 |
#include <lemon/concept_check.h> |
| 29 | 29 |
#include <lemon/concepts/maps.h> |
| 30 | 30 |
|
| 31 | 31 |
//\ingroup graphbits |
| 32 | 32 |
// |
| 33 | 33 |
//\file |
| 34 | 34 |
//\brief Vector based graph maps. |
| 35 | 35 |
namespace lemon {
|
| 36 | 36 |
|
| 37 | 37 |
// \ingroup graphbits |
| 38 | 38 |
// |
| 39 | 39 |
// \brief Graph map based on the std::vector storage. |
| 40 | 40 |
// |
| 41 | 41 |
// The VectorMap template class is graph map structure that automatically |
| 42 | 42 |
// updates the map when a key is added to or erased from the graph. |
| 43 | 43 |
// This map type uses std::vector to store the values. |
| 44 | 44 |
// |
| 45 | 45 |
// \tparam _Graph The graph this map is attached to. |
| 46 | 46 |
// \tparam _Item The item type of the graph items. |
| 47 | 47 |
// \tparam _Value The value type of the map. |
| 48 | 48 |
template <typename _Graph, typename _Item, typename _Value> |
| 49 | 49 |
class VectorMap |
| 50 | 50 |
: public ItemSetTraits<_Graph, _Item>::ItemNotifier::ObserverBase {
|
| 51 | 51 |
private: |
| 52 | 52 |
|
| 53 | 53 |
// The container type of the map. |
| 54 | 54 |
typedef std::vector<_Value> Container; |
| 55 | 55 |
|
| 56 | 56 |
public: |
| 57 | 57 |
|
| 58 | 58 |
// The graph type of the map. |
| 59 |
typedef _Graph |
|
| 59 |
typedef _Graph GraphType; |
|
| 60 | 60 |
// The item type of the map. |
| 61 | 61 |
typedef _Item Item; |
| 62 | 62 |
// The reference map tag. |
| 63 | 63 |
typedef True ReferenceMapTag; |
| 64 | 64 |
|
| 65 | 65 |
// The key type of the map. |
| 66 | 66 |
typedef _Item Key; |
| 67 | 67 |
// The value type of the map. |
| 68 | 68 |
typedef _Value Value; |
| 69 | 69 |
|
| 70 | 70 |
// The notifier type. |
| 71 | 71 |
typedef typename ItemSetTraits<_Graph, _Item>::ItemNotifier Notifier; |
| 72 | 72 |
|
| 73 | 73 |
// The map type. |
| 74 | 74 |
typedef VectorMap Map; |
| 75 |
// The base class of the map. |
|
| 76 |
typedef typename Notifier::ObserverBase Parent; |
|
| 77 | 75 |
|
| 78 | 76 |
// The reference type of the map; |
| 79 | 77 |
typedef typename Container::reference Reference; |
| 80 | 78 |
// The const reference type of the map; |
| 81 | 79 |
typedef typename Container::const_reference ConstReference; |
| 82 | 80 |
|
| 81 |
private: |
|
| 82 |
|
|
| 83 |
// The base class of the map. |
|
| 84 |
typedef typename Notifier::ObserverBase Parent; |
|
| 85 |
|
|
| 86 |
public: |
|
| 83 | 87 |
|
| 84 | 88 |
// \brief Constructor to attach the new map into the notifier. |
| 85 | 89 |
// |
| 86 | 90 |
// It constructs a map and attachs it into the notifier. |
| 87 | 91 |
// It adds all the items of the graph to the map. |
| 88 |
VectorMap(const |
|
| 92 |
VectorMap(const GraphType& graph) {
|
|
| 89 | 93 |
Parent::attach(graph.notifier(Item())); |
| 90 | 94 |
container.resize(Parent::notifier()->maxId() + 1); |
| 91 | 95 |
} |
| 92 | 96 |
|
| 93 | 97 |
// \brief Constructor uses given value to initialize the map. |
| 94 | 98 |
// |
| 95 | 99 |
// It constructs a map uses a given value to initialize the map. |
| 96 | 100 |
// It adds all the items of the graph to the map. |
| 97 |
VectorMap(const |
|
| 101 |
VectorMap(const GraphType& graph, const Value& value) {
|
|
| 98 | 102 |
Parent::attach(graph.notifier(Item())); |
| 99 | 103 |
container.resize(Parent::notifier()->maxId() + 1, value); |
| 100 | 104 |
} |
| 101 | 105 |
|
| 102 | 106 |
private: |
| 103 | 107 |
// \brief Copy constructor |
| 104 | 108 |
// |
| 105 | 109 |
// Copy constructor. |
| 106 | 110 |
VectorMap(const VectorMap& _copy) : Parent() {
|
| 107 | 111 |
if (_copy.attached()) {
|
| 108 | 112 |
Parent::attach(*_copy.notifier()); |
| 109 | 113 |
container = _copy.container; |
| 110 | 114 |
} |
| 111 | 115 |
} |
| 112 | 116 |
|
| 113 | 117 |
// \brief Assign operator. |
| 114 | 118 |
// |
| 115 | 119 |
// This operator assigns for each item in the map the |
| 116 | 120 |
// value mapped to the same item in the copied map. |
| 117 | 121 |
// The parameter map should be indiced with the same |
| 118 | 122 |
// itemset because this assign operator does not change |
| 119 | 123 |
// the container of the map. |
| 120 | 124 |
VectorMap& operator=(const VectorMap& cmap) {
|
| 121 | 125 |
return operator=<VectorMap>(cmap); |
| 122 | 126 |
} |
| 123 | 127 |
|
| 124 | 128 |
|
| 125 | 129 |
// \brief Template assign operator. |
| 126 | 130 |
// |
| 127 |
// The given parameter should |
|
| 131 |
// The given parameter should conform to the ReadMap |
|
| 128 | 132 |
// concecpt and could be indiced by the current item set of |
| 129 | 133 |
// the NodeMap. In this case the value for each item |
| 130 | 134 |
// is assigned by the value of the given ReadMap. |
| 131 | 135 |
template <typename CMap> |
| 132 | 136 |
VectorMap& operator=(const CMap& cmap) {
|
| 133 | 137 |
checkConcept<concepts::ReadMap<Key, _Value>, CMap>(); |
| 134 | 138 |
const typename Parent::Notifier* nf = Parent::notifier(); |
| 135 | 139 |
Item it; |
| 136 | 140 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
| 137 | 141 |
set(it, cmap[it]); |
| 138 | 142 |
} |
| 139 | 143 |
return *this; |
| 140 | 144 |
} |
| 141 | 145 |
|
| 142 | 146 |
public: |
| 143 | 147 |
|
| 144 | 148 |
// \brief The subcript operator. |
| 145 | 149 |
// |
| 146 | 150 |
// The subscript operator. The map can be subscripted by the |
| 147 | 151 |
// actual items of the graph. |
| 148 | 152 |
Reference operator[](const Key& key) {
|
| 149 | 153 |
return container[Parent::notifier()->id(key)]; |
| 150 | 154 |
} |
| 151 | 155 |
|
| 152 | 156 |
// \brief The const subcript operator. |
| 153 | 157 |
// |
| 154 | 158 |
// The const subscript operator. The map can be subscripted by the |
| 155 | 159 |
// actual items of the graph. |
| 156 | 160 |
ConstReference operator[](const Key& key) const {
|
| 157 | 161 |
return container[Parent::notifier()->id(key)]; |
| 158 | 162 |
} |
| 159 | 163 |
|
| 160 | 164 |
|
| 161 | 165 |
// \brief The setter function of the map. |
| 162 | 166 |
// |
| 163 | 167 |
// It the same as operator[](key) = value expression. |
| 164 | 168 |
void set(const Key& key, const Value& value) {
|
| 165 | 169 |
(*this)[key] = value; |
| 166 | 170 |
} |
| 167 | 171 |
|
| 168 | 172 |
protected: |
| 169 | 173 |
|
| 170 | 174 |
// \brief Adds a new key to the map. |
| 171 | 175 |
// |
| 172 | 176 |
// It adds a new key to the map. It is called by the observer notifier |
| 173 | 177 |
// and it overrides the add() member function of the observer base. |
| 174 | 178 |
virtual void add(const Key& key) {
|
| 175 | 179 |
int id = Parent::notifier()->id(key); |
| 176 | 180 |
if (id >= int(container.size())) {
|
| 177 | 181 |
container.resize(id + 1); |
| 178 | 182 |
} |
| 179 | 183 |
} |
| 180 | 184 |
|
| 181 | 185 |
// \brief Adds more new keys to the map. |
| 182 | 186 |
// |
| 183 | 187 |
// It adds more new keys to the map. It is called by the observer notifier |
| 184 | 188 |
// and it overrides the add() member function of the observer base. |
| 185 | 189 |
virtual void add(const std::vector<Key>& keys) {
|
| 186 | 190 |
int max = container.size() - 1; |
| 187 | 191 |
for (int i = 0; i < int(keys.size()); ++i) {
|
| 188 | 192 |
int id = Parent::notifier()->id(keys[i]); |
| 189 | 193 |
if (id >= max) {
|
| 190 | 194 |
max = id; |
| 191 | 195 |
} |
| 192 | 196 |
} |
| 193 | 197 |
container.resize(max + 1); |
| 194 | 198 |
} |
| 195 | 199 |
|
| 196 | 200 |
// \brief Erase a key from the map. |
| 197 | 201 |
// |
| 198 | 202 |
// Erase a key from the map. It is called by the observer notifier |
| 199 | 203 |
// and it overrides the erase() member function of the observer base. |
| 200 | 204 |
virtual void erase(const Key& key) {
|
| 201 | 205 |
container[Parent::notifier()->id(key)] = Value(); |
| 202 | 206 |
} |
| 203 | 207 |
|
| 204 | 208 |
// \brief Erase more keys from the map. |
| 205 | 209 |
// |
| 206 | 210 |
// It erases more keys from the map. It is called by the observer notifier |
| 207 | 211 |
// and it overrides the erase() member function of the observer base. |
| 208 | 212 |
virtual void erase(const std::vector<Key>& keys) {
|
| 209 | 213 |
for (int i = 0; i < int(keys.size()); ++i) {
|
| 210 | 214 |
container[Parent::notifier()->id(keys[i])] = Value(); |
| 211 | 215 |
} |
| 212 | 216 |
} |
| 213 | 217 |
|
| 214 | 218 |
// \brief Build the map. |
| 215 | 219 |
// |
| 216 | 220 |
// It builds the map. It is called by the observer notifier |
| 217 | 221 |
// and it overrides the build() member function of the observer base. |
| 218 | 222 |
virtual void build() {
|
| 219 | 223 |
int size = Parent::notifier()->maxId() + 1; |
| 220 | 224 |
container.reserve(size); |
| 221 | 225 |
container.resize(size); |
| 222 | 226 |
} |
| 223 | 227 |
|
| 224 | 228 |
// \brief Clear the map. |
| 225 | 229 |
// |
| 226 | 230 |
// It erases all items from the map. It is called by the observer notifier |
| 227 | 231 |
// and it overrides the clear() member function of the observer base. |
| 228 | 232 |
virtual void clear() {
|
| 229 | 233 |
container.clear(); |
| 230 | 234 |
} |
| 231 | 235 |
|
| 232 | 236 |
private: |
| 233 | 237 |
|
| 234 | 238 |
Container container; |
| 235 | 239 |
|
| 236 | 240 |
}; |
| 237 | 241 |
|
| 238 | 242 |
} |
| 239 | 243 |
|
| 240 | 244 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_CIRCULATION_H |
| 20 | 20 |
#define LEMON_CIRCULATION_H |
| 21 | 21 |
|
| 22 | 22 |
#include <lemon/tolerance.h> |
| 23 | 23 |
#include <lemon/elevator.h> |
| 24 |
#include <limits> |
|
| 24 | 25 |
|
| 25 | 26 |
///\ingroup max_flow |
| 26 | 27 |
///\file |
| 27 | 28 |
///\brief Push-relabel algorithm for finding a feasible circulation. |
| 28 | 29 |
/// |
| 29 | 30 |
namespace lemon {
|
| 30 | 31 |
|
| 31 | 32 |
/// \brief Default traits class of Circulation class. |
| 32 | 33 |
/// |
| 33 | 34 |
/// Default traits class of Circulation class. |
| 34 |
/// \tparam _Diraph Digraph type. |
|
| 35 |
/// \tparam _LCapMap Lower bound capacity map type. |
|
| 36 |
/// \tparam _UCapMap Upper bound capacity map type. |
|
| 37 |
/// \tparam _DeltaMap Delta map type. |
|
| 38 |
template <typename _Diraph, typename _LCapMap, |
|
| 39 |
typename _UCapMap, typename _DeltaMap> |
|
| 35 |
/// |
|
| 36 |
/// \tparam GR Type of the digraph the algorithm runs on. |
|
| 37 |
/// \tparam LM The type of the lower bound map. |
|
| 38 |
/// \tparam UM The type of the upper bound (capacity) map. |
|
| 39 |
/// \tparam SM The type of the supply map. |
|
| 40 |
template <typename GR, typename LM, |
|
| 41 |
typename UM, typename SM> |
|
| 40 | 42 |
struct CirculationDefaultTraits {
|
| 41 | 43 |
|
| 42 | 44 |
/// \brief The type of the digraph the algorithm runs on. |
| 43 |
typedef |
|
| 45 |
typedef GR Digraph; |
|
| 44 | 46 |
|
| 45 |
/// \brief The type of the map that stores the circulation lower |
|
| 46 |
/// bound. |
|
| 47 |
/// \brief The type of the lower bound map. |
|
| 47 | 48 |
/// |
| 48 |
/// The type of the map that stores the circulation lower bound. |
|
| 49 |
/// It must meet the \ref concepts::ReadMap "ReadMap" concept. |
|
| 50 |
|
|
| 49 |
/// The type of the map that stores the lower bounds on the arcs. |
|
| 50 |
/// It must conform to the \ref concepts::ReadMap "ReadMap" concept. |
|
| 51 |
typedef LM LowerMap; |
|
| 51 | 52 |
|
| 52 |
/// \brief The type of the map that stores the circulation upper |
|
| 53 |
/// bound. |
|
| 53 |
/// \brief The type of the upper bound (capacity) map. |
|
| 54 | 54 |
/// |
| 55 |
/// The type of the map that stores the circulation upper bound. |
|
| 56 |
/// It must meet the \ref concepts::ReadMap "ReadMap" concept. |
|
| 57 |
|
|
| 55 |
/// The type of the map that stores the upper bounds (capacities) |
|
| 56 |
/// on the arcs. |
|
| 57 |
/// It must conform to the \ref concepts::ReadMap "ReadMap" concept. |
|
| 58 |
typedef UM UpperMap; |
|
| 58 | 59 |
|
| 59 |
/// \brief The type of the map that stores the lower bound for |
|
| 60 |
/// the supply of the nodes. |
|
| 60 |
/// \brief The type of supply map. |
|
| 61 | 61 |
/// |
| 62 |
/// The type of the map that stores the lower bound for the supply |
|
| 63 |
/// of the nodes. It must meet the \ref concepts::ReadMap "ReadMap" |
|
| 64 |
/// concept. |
|
| 65 |
typedef _DeltaMap DeltaMap; |
|
| 62 |
/// The type of the map that stores the signed supply values of the |
|
| 63 |
/// nodes. |
|
| 64 |
/// It must conform to the \ref concepts::ReadMap "ReadMap" concept. |
|
| 65 |
typedef SM SupplyMap; |
|
| 66 | 66 |
|
| 67 |
/// \brief The type of the flow values. |
|
| 68 |
typedef typename DeltaMap::Value Value; |
|
| 67 |
/// \brief The type of the flow and supply values. |
|
| 68 |
typedef typename SupplyMap::Value Value; |
|
| 69 | 69 |
|
| 70 | 70 |
/// \brief The type of the map that stores the flow values. |
| 71 | 71 |
/// |
| 72 | 72 |
/// The type of the map that stores the flow values. |
| 73 |
/// It must |
|
| 73 |
/// It must conform to the \ref concepts::ReadWriteMap "ReadWriteMap" |
|
| 74 |
/// concept. |
|
| 75 |
#ifdef DOXYGEN |
|
| 76 |
typedef GR::ArcMap<Value> FlowMap; |
|
| 77 |
#else |
|
| 74 | 78 |
typedef typename Digraph::template ArcMap<Value> FlowMap; |
| 79 |
#endif |
|
| 75 | 80 |
|
| 76 | 81 |
/// \brief Instantiates a FlowMap. |
| 77 | 82 |
/// |
| 78 | 83 |
/// This function instantiates a \ref FlowMap. |
| 79 |
/// \param digraph The digraph |
|
| 84 |
/// \param digraph The digraph for which we would like to define |
|
| 80 | 85 |
/// the flow map. |
| 81 | 86 |
static FlowMap* createFlowMap(const Digraph& digraph) {
|
| 82 | 87 |
return new FlowMap(digraph); |
| 83 | 88 |
} |
| 84 | 89 |
|
| 85 | 90 |
/// \brief The elevator type used by the algorithm. |
| 86 | 91 |
/// |
| 87 | 92 |
/// The elevator type used by the algorithm. |
| 88 | 93 |
/// |
| 89 |
/// \sa Elevator |
|
| 90 |
/// \sa LinkedElevator |
|
| 94 |
/// \sa Elevator, LinkedElevator |
|
| 95 |
#ifdef DOXYGEN |
|
| 96 |
typedef lemon::Elevator<GR, GR::Node> Elevator; |
|
| 97 |
#else |
|
| 91 | 98 |
typedef lemon::Elevator<Digraph, typename Digraph::Node> Elevator; |
| 99 |
#endif |
|
| 92 | 100 |
|
| 93 | 101 |
/// \brief Instantiates an Elevator. |
| 94 | 102 |
/// |
| 95 | 103 |
/// This function instantiates an \ref Elevator. |
| 96 |
/// \param digraph The digraph |
|
| 104 |
/// \param digraph The digraph for which we would like to define |
|
| 97 | 105 |
/// the elevator. |
| 98 | 106 |
/// \param max_level The maximum level of the elevator. |
| 99 | 107 |
static Elevator* createElevator(const Digraph& digraph, int max_level) {
|
| 100 | 108 |
return new Elevator(digraph, max_level); |
| 101 | 109 |
} |
| 102 | 110 |
|
| 103 | 111 |
/// \brief The tolerance used by the algorithm |
| 104 | 112 |
/// |
| 105 | 113 |
/// The tolerance used by the algorithm to handle inexact computation. |
| 106 | 114 |
typedef lemon::Tolerance<Value> Tolerance; |
| 107 | 115 |
|
| 108 | 116 |
}; |
| 109 | 117 |
|
| 110 | 118 |
/** |
| 111 | 119 |
\brief Push-relabel algorithm for the network circulation problem. |
| 112 | 120 |
|
| 113 | 121 |
\ingroup max_flow |
| 114 |
This class implements a push-relabel algorithm for the network |
|
| 115 |
circulation problem. |
|
| 122 |
This class implements a push-relabel algorithm for the \e network |
|
| 123 |
\e circulation problem. |
|
| 116 | 124 |
It is to find a feasible circulation when lower and upper bounds |
| 117 |
are given for the flow values on the arcs and lower bounds |
|
| 118 |
are given for the supply values of the nodes. |
|
| 125 |
are given for the flow values on the arcs and lower bounds are |
|
| 126 |
given for the difference between the outgoing and incoming flow |
|
| 127 |
at the nodes. |
|
| 119 | 128 |
|
| 120 | 129 |
The exact formulation of this problem is the following. |
| 121 |
Let \f$G=(V,A)\f$ be a digraph, |
|
| 122 |
\f$lower, upper: A\rightarrow\mathbf{R}^+_0\f$,
|
|
| 123 |
\f$delta: V\rightarrow\mathbf{R}\f$. Find a feasible circulation
|
|
| 124 |
\f$f: A\rightarrow\mathbf{R}^+_0\f$ so that
|
|
| 125 |
\f[ \sum_{a\in\delta_{out}(v)} f(a) - \sum_{a\in\delta_{in}(v)} f(a)
|
|
| 126 |
\geq delta(v) \quad \forall v\in V, \f] |
|
| 127 |
\f[ lower(a)\leq f(a) \leq upper(a) \quad \forall a\in A. \f] |
|
| 128 |
\note \f$delta(v)\f$ specifies a lower bound for the supply of node |
|
| 129 |
\f$v\f$. It can be either positive or negative, however note that |
|
| 130 |
\f$\sum_{v\in V}delta(v)\f$ should be zero or negative in order to
|
|
| 131 |
|
|
| 130 |
Let \f$G=(V,A)\f$ be a digraph, \f$lower: A\rightarrow\mathbf{R}\f$
|
|
| 131 |
\f$upper: A\rightarrow\mathbf{R}\cup\{\infty\}\f$ denote the lower and
|
|
| 132 |
upper bounds on the arcs, for which \f$lower(uv) \leq upper(uv)\f$ |
|
| 133 |
holds for all \f$uv\in A\f$, and \f$sup: V\rightarrow\mathbf{R}\f$
|
|
| 134 |
denotes the signed supply values of the nodes. |
|
| 135 |
If \f$sup(u)>0\f$, then \f$u\f$ is a supply node with \f$sup(u)\f$ |
|
| 136 |
supply, if \f$sup(u)<0\f$, then \f$u\f$ is a demand node with |
|
| 137 |
\f$-sup(u)\f$ demand. |
|
| 138 |
A feasible circulation is an \f$f: A\rightarrow\mathbf{R}\f$
|
|
| 139 |
solution of the following problem. |
|
| 132 | 140 |
|
| 133 |
\note A special case of this problem is when |
|
| 134 |
\f$\sum_{v\in V}delta(v) = 0\f$. Then the supply of each node \f$v\f$
|
|
| 135 |
will be \e equal \e to \f$delta(v)\f$, if a circulation can be found. |
|
| 136 |
Thus a feasible solution for the |
|
| 137 |
\ref min_cost_flow "minimum cost flow" problem can be calculated |
|
| 138 |
in this way. |
|
| 141 |
\f[ \sum_{uv\in A} f(uv) - \sum_{vu\in A} f(vu)
|
|
| 142 |
\geq sup(u) \quad \forall u\in V, \f] |
|
| 143 |
\f[ lower(uv) \leq f(uv) \leq upper(uv) \quad \forall uv\in A. \f] |
|
| 144 |
|
|
| 145 |
The sum of the supply values, i.e. \f$\sum_{u\in V} sup(u)\f$ must be
|
|
| 146 |
zero or negative in order to have a feasible solution (since the sum |
|
| 147 |
of the expressions on the left-hand side of the inequalities is zero). |
|
| 148 |
It means that the total demand must be greater or equal to the total |
|
| 149 |
supply and all the supplies have to be carried out from the supply nodes, |
|
| 150 |
but there could be demands that are not satisfied. |
|
| 151 |
If \f$\sum_{u\in V} sup(u)\f$ is zero, then all the supply/demand
|
|
| 152 |
constraints have to be satisfied with equality, i.e. all demands |
|
| 153 |
have to be satisfied and all supplies have to be used. |
|
| 154 |
|
|
| 155 |
If you need the opposite inequalities in the supply/demand constraints |
|
| 156 |
(i.e. the total demand is less than the total supply and all the demands |
|
| 157 |
have to be satisfied while there could be supplies that are not used), |
|
| 158 |
then you could easily transform the problem to the above form by reversing |
|
| 159 |
the direction of the arcs and taking the negative of the supply values |
|
| 160 |
(e.g. using \ref ReverseDigraph and \ref NegMap adaptors). |
|
| 139 | 161 |
|
| 140 |
\tparam _Digraph The type of the digraph the algorithm runs on. |
|
| 141 |
\tparam _LCapMap The type of the lower bound capacity map. The default |
|
| 142 |
map type is \ref concepts::Digraph::ArcMap "_Digraph::ArcMap<int>". |
|
| 143 |
\tparam _UCapMap The type of the upper bound capacity map. The default |
|
| 144 |
map type is \c _LCapMap. |
|
| 145 |
\tparam _DeltaMap The type of the map that stores the lower bound |
|
| 146 |
for the supply of the nodes. The default map type is |
|
| 147 |
\c _Digraph::ArcMap<_UCapMap::Value>. |
|
| 162 |
This algorithm either calculates a feasible circulation, or provides |
|
| 163 |
a \ref barrier() "barrier", which prooves that a feasible soultion |
|
| 164 |
cannot exist. |
|
| 165 |
|
|
| 166 |
Note that this algorithm also provides a feasible solution for the |
|
| 167 |
\ref min_cost_flow "minimum cost flow problem". |
|
| 168 |
|
|
| 169 |
\tparam GR The type of the digraph the algorithm runs on. |
|
| 170 |
\tparam LM The type of the lower bound map. The default |
|
| 171 |
map type is \ref concepts::Digraph::ArcMap "GR::ArcMap<int>". |
|
| 172 |
\tparam UM The type of the upper bound (capacity) map. |
|
| 173 |
The default map type is \c LM. |
|
| 174 |
\tparam SM The type of the supply map. The default map type is |
|
| 175 |
\ref concepts::Digraph::NodeMap "GR::NodeMap<UM::Value>". |
|
| 148 | 176 |
*/ |
| 149 | 177 |
#ifdef DOXYGEN |
| 150 |
template< typename _Digraph, |
|
| 151 |
typename _LCapMap, |
|
| 152 |
typename _UCapMap, |
|
| 153 |
typename _DeltaMap, |
|
| 154 |
|
|
| 178 |
template< typename GR, |
|
| 179 |
typename LM, |
|
| 180 |
typename UM, |
|
| 181 |
typename SM, |
|
| 182 |
typename TR > |
|
| 155 | 183 |
#else |
| 156 |
template< typename _Digraph, |
|
| 157 |
typename _LCapMap = typename _Digraph::template ArcMap<int>, |
|
| 158 |
typename _UCapMap = _LCapMap, |
|
| 159 |
typename _DeltaMap = typename _Digraph:: |
|
| 160 |
template NodeMap<typename _UCapMap::Value>, |
|
| 161 |
typename _Traits=CirculationDefaultTraits<_Digraph, _LCapMap, |
|
| 162 |
|
|
| 184 |
template< typename GR, |
|
| 185 |
typename LM = typename GR::template ArcMap<int>, |
|
| 186 |
typename UM = LM, |
|
| 187 |
typename SM = typename GR::template NodeMap<typename UM::Value>, |
|
| 188 |
typename TR = CirculationDefaultTraits<GR, LM, UM, SM> > |
|
| 163 | 189 |
#endif |
| 164 | 190 |
class Circulation {
|
| 165 | 191 |
public: |
| 166 | 192 |
|
| 167 | 193 |
///The \ref CirculationDefaultTraits "traits class" of the algorithm. |
| 168 |
typedef |
|
| 194 |
typedef TR Traits; |
|
| 169 | 195 |
///The type of the digraph the algorithm runs on. |
| 170 | 196 |
typedef typename Traits::Digraph Digraph; |
| 171 |
///The type of the flow values. |
|
| 197 |
///The type of the flow and supply values. |
|
| 172 | 198 |
typedef typename Traits::Value Value; |
| 173 | 199 |
|
| 174 |
/// The type of the lower bound capacity map. |
|
| 175 |
typedef typename Traits::LCapMap LCapMap; |
|
| 176 |
/// The type of the upper bound capacity map. |
|
| 177 |
typedef typename Traits::UCapMap UCapMap; |
|
| 178 |
/// \brief The type of the map that stores the lower bound for |
|
| 179 |
/// the supply of the nodes. |
|
| 180 |
|
|
| 200 |
///The type of the lower bound map. |
|
| 201 |
typedef typename Traits::LowerMap LowerMap; |
|
| 202 |
///The type of the upper bound (capacity) map. |
|
| 203 |
typedef typename Traits::UpperMap UpperMap; |
|
| 204 |
///The type of the supply map. |
|
| 205 |
typedef typename Traits::SupplyMap SupplyMap; |
|
| 181 | 206 |
///The type of the flow map. |
| 182 | 207 |
typedef typename Traits::FlowMap FlowMap; |
| 183 | 208 |
|
| 184 | 209 |
///The type of the elevator. |
| 185 | 210 |
typedef typename Traits::Elevator Elevator; |
| 186 | 211 |
///The type of the tolerance. |
| 187 | 212 |
typedef typename Traits::Tolerance Tolerance; |
| 188 | 213 |
|
| 189 | 214 |
private: |
| 190 | 215 |
|
| 191 | 216 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 192 | 217 |
|
| 193 | 218 |
const Digraph &_g; |
| 194 | 219 |
int _node_num; |
| 195 | 220 |
|
| 196 |
const LCapMap *_lo; |
|
| 197 |
const UCapMap *_up; |
|
| 198 |
const |
|
| 221 |
const LowerMap *_lo; |
|
| 222 |
const UpperMap *_up; |
|
| 223 |
const SupplyMap *_supply; |
|
| 199 | 224 |
|
| 200 | 225 |
FlowMap *_flow; |
| 201 | 226 |
bool _local_flow; |
| 202 | 227 |
|
| 203 | 228 |
Elevator* _level; |
| 204 | 229 |
bool _local_level; |
| 205 | 230 |
|
| 206 | 231 |
typedef typename Digraph::template NodeMap<Value> ExcessMap; |
| 207 | 232 |
ExcessMap* _excess; |
| 208 | 233 |
|
| 209 | 234 |
Tolerance _tol; |
| 210 | 235 |
int _el; |
| 211 | 236 |
|
| 212 | 237 |
public: |
| 213 | 238 |
|
| 214 | 239 |
typedef Circulation Create; |
| 215 | 240 |
|
| 216 | 241 |
///\name Named Template Parameters |
| 217 | 242 |
|
| 218 | 243 |
///@{
|
| 219 | 244 |
|
| 220 |
template <typename |
|
| 245 |
template <typename T> |
|
| 221 | 246 |
struct SetFlowMapTraits : public Traits {
|
| 222 |
typedef |
|
| 247 |
typedef T FlowMap; |
|
| 223 | 248 |
static FlowMap *createFlowMap(const Digraph&) {
|
| 224 | 249 |
LEMON_ASSERT(false, "FlowMap is not initialized"); |
| 225 | 250 |
return 0; // ignore warnings |
| 226 | 251 |
} |
| 227 | 252 |
}; |
| 228 | 253 |
|
| 229 | 254 |
/// \brief \ref named-templ-param "Named parameter" for setting |
| 230 | 255 |
/// FlowMap type |
| 231 | 256 |
/// |
| 232 | 257 |
/// \ref named-templ-param "Named parameter" for setting FlowMap |
| 233 | 258 |
/// type. |
| 234 |
template <typename |
|
| 259 |
template <typename T> |
|
| 235 | 260 |
struct SetFlowMap |
| 236 |
: public Circulation<Digraph, LCapMap, UCapMap, DeltaMap, |
|
| 237 |
SetFlowMapTraits<_FlowMap> > {
|
|
| 238 |
typedef Circulation<Digraph, LCapMap, UCapMap, DeltaMap, |
|
| 239 |
SetFlowMapTraits<_FlowMap> > Create; |
|
| 261 |
: public Circulation<Digraph, LowerMap, UpperMap, SupplyMap, |
|
| 262 |
SetFlowMapTraits<T> > {
|
|
| 263 |
typedef Circulation<Digraph, LowerMap, UpperMap, SupplyMap, |
|
| 264 |
SetFlowMapTraits<T> > Create; |
|
| 240 | 265 |
}; |
| 241 | 266 |
|
| 242 |
template <typename |
|
| 267 |
template <typename T> |
|
| 243 | 268 |
struct SetElevatorTraits : public Traits {
|
| 244 |
typedef |
|
| 269 |
typedef T Elevator; |
|
| 245 | 270 |
static Elevator *createElevator(const Digraph&, int) {
|
| 246 | 271 |
LEMON_ASSERT(false, "Elevator is not initialized"); |
| 247 | 272 |
return 0; // ignore warnings |
| 248 | 273 |
} |
| 249 | 274 |
}; |
| 250 | 275 |
|
| 251 | 276 |
/// \brief \ref named-templ-param "Named parameter" for setting |
| 252 | 277 |
/// Elevator type |
| 253 | 278 |
/// |
| 254 | 279 |
/// \ref named-templ-param "Named parameter" for setting Elevator |
| 255 | 280 |
/// type. If this named parameter is used, then an external |
| 256 | 281 |
/// elevator object must be passed to the algorithm using the |
| 257 | 282 |
/// \ref elevator(Elevator&) "elevator()" function before calling |
| 258 | 283 |
/// \ref run() or \ref init(). |
| 259 | 284 |
/// \sa SetStandardElevator |
| 260 |
template <typename |
|
| 285 |
template <typename T> |
|
| 261 | 286 |
struct SetElevator |
| 262 |
: public Circulation<Digraph, LCapMap, UCapMap, DeltaMap, |
|
| 263 |
SetElevatorTraits<_Elevator> > {
|
|
| 264 |
typedef Circulation<Digraph, LCapMap, UCapMap, DeltaMap, |
|
| 265 |
SetElevatorTraits<_Elevator> > Create; |
|
| 287 |
: public Circulation<Digraph, LowerMap, UpperMap, SupplyMap, |
|
| 288 |
SetElevatorTraits<T> > {
|
|
| 289 |
typedef Circulation<Digraph, LowerMap, UpperMap, SupplyMap, |
|
| 290 |
SetElevatorTraits<T> > Create; |
|
| 266 | 291 |
}; |
| 267 | 292 |
|
| 268 |
template <typename |
|
| 293 |
template <typename T> |
|
| 269 | 294 |
struct SetStandardElevatorTraits : public Traits {
|
| 270 |
typedef |
|
| 295 |
typedef T Elevator; |
|
| 271 | 296 |
static Elevator *createElevator(const Digraph& digraph, int max_level) {
|
| 272 | 297 |
return new Elevator(digraph, max_level); |
| 273 | 298 |
} |
| 274 | 299 |
}; |
| 275 | 300 |
|
| 276 | 301 |
/// \brief \ref named-templ-param "Named parameter" for setting |
| 277 | 302 |
/// Elevator type with automatic allocation |
| 278 | 303 |
/// |
| 279 | 304 |
/// \ref named-templ-param "Named parameter" for setting Elevator |
| 280 | 305 |
/// type with automatic allocation. |
| 281 | 306 |
/// The Elevator should have standard constructor interface to be |
| 282 | 307 |
/// able to automatically created by the algorithm (i.e. the |
| 283 | 308 |
/// digraph and the maximum level should be passed to it). |
| 284 | 309 |
/// However an external elevator object could also be passed to the |
| 285 | 310 |
/// algorithm with the \ref elevator(Elevator&) "elevator()" function |
| 286 | 311 |
/// before calling \ref run() or \ref init(). |
| 287 | 312 |
/// \sa SetElevator |
| 288 |
template <typename |
|
| 313 |
template <typename T> |
|
| 289 | 314 |
struct SetStandardElevator |
| 290 |
: public Circulation<Digraph, LCapMap, UCapMap, DeltaMap, |
|
| 291 |
SetStandardElevatorTraits<_Elevator> > {
|
|
| 292 |
typedef Circulation<Digraph, LCapMap, UCapMap, DeltaMap, |
|
| 293 |
SetStandardElevatorTraits<_Elevator> > Create; |
|
| 315 |
: public Circulation<Digraph, LowerMap, UpperMap, SupplyMap, |
|
| 316 |
SetStandardElevatorTraits<T> > {
|
|
| 317 |
typedef Circulation<Digraph, LowerMap, UpperMap, SupplyMap, |
|
| 318 |
SetStandardElevatorTraits<T> > Create; |
|
| 294 | 319 |
}; |
| 295 | 320 |
|
| 296 | 321 |
/// @} |
| 297 | 322 |
|
| 298 | 323 |
protected: |
| 299 | 324 |
|
| 300 | 325 |
Circulation() {}
|
| 301 | 326 |
|
| 302 | 327 |
public: |
| 303 | 328 |
|
| 304 |
/// |
|
| 329 |
/// Constructor. |
|
| 305 | 330 |
|
| 306 | 331 |
/// The constructor of the class. |
| 307 |
/// \param g The digraph the algorithm runs on. |
|
| 308 |
/// \param lo The lower bound capacity of the arcs. |
|
| 309 |
/// \param up The upper bound capacity of the arcs. |
|
| 310 |
/// \param delta The lower bound for the supply of the nodes. |
|
| 311 |
Circulation(const Digraph &g,const LCapMap &lo, |
|
| 312 |
const UCapMap &up,const DeltaMap &delta) |
|
| 313 |
: _g(g), _node_num(), |
|
| 314 |
_lo(&lo),_up(&up),_delta(&delta),_flow(0),_local_flow(false), |
|
| 315 |
|
|
| 332 |
/// |
|
| 333 |
/// \param graph The digraph the algorithm runs on. |
|
| 334 |
/// \param lower The lower bounds for the flow values on the arcs. |
|
| 335 |
/// \param upper The upper bounds (capacities) for the flow values |
|
| 336 |
/// on the arcs. |
|
| 337 |
/// \param supply The signed supply values of the nodes. |
|
| 338 |
Circulation(const Digraph &graph, const LowerMap &lower, |
|
| 339 |
const UpperMap &upper, const SupplyMap &supply) |
|
| 340 |
: _g(graph), _lo(&lower), _up(&upper), _supply(&supply), |
|
| 341 |
_flow(NULL), _local_flow(false), _level(NULL), _local_level(false), |
|
| 342 |
_excess(NULL) {}
|
|
| 316 | 343 |
|
| 317 | 344 |
/// Destructor. |
| 318 | 345 |
~Circulation() {
|
| 319 | 346 |
destroyStructures(); |
| 320 | 347 |
} |
| 321 | 348 |
|
| 322 | 349 |
|
| 323 | 350 |
private: |
| 324 | 351 |
|
| 352 |
bool checkBoundMaps() {
|
|
| 353 |
for (ArcIt e(_g);e!=INVALID;++e) {
|
|
| 354 |
if (_tol.less((*_up)[e], (*_lo)[e])) return false; |
|
| 355 |
} |
|
| 356 |
return true; |
|
| 357 |
} |
|
| 358 |
|
|
| 325 | 359 |
void createStructures() {
|
| 326 | 360 |
_node_num = _el = countNodes(_g); |
| 327 | 361 |
|
| 328 | 362 |
if (!_flow) {
|
| 329 | 363 |
_flow = Traits::createFlowMap(_g); |
| 330 | 364 |
_local_flow = true; |
| 331 | 365 |
} |
| 332 | 366 |
if (!_level) {
|
| 333 | 367 |
_level = Traits::createElevator(_g, _node_num); |
| 334 | 368 |
_local_level = true; |
| 335 | 369 |
} |
| 336 | 370 |
if (!_excess) {
|
| 337 | 371 |
_excess = new ExcessMap(_g); |
| 338 | 372 |
} |
| 339 | 373 |
} |
| 340 | 374 |
|
| 341 | 375 |
void destroyStructures() {
|
| 342 | 376 |
if (_local_flow) {
|
| 343 | 377 |
delete _flow; |
| 344 | 378 |
} |
| 345 | 379 |
if (_local_level) {
|
| 346 | 380 |
delete _level; |
| 347 | 381 |
} |
| 348 | 382 |
if (_excess) {
|
| 349 | 383 |
delete _excess; |
| 350 | 384 |
} |
| 351 | 385 |
} |
| 352 | 386 |
|
| 353 | 387 |
public: |
| 354 | 388 |
|
| 355 |
/// Sets the lower bound |
|
| 389 |
/// Sets the lower bound map. |
|
| 356 | 390 |
|
| 357 |
/// Sets the lower bound |
|
| 391 |
/// Sets the lower bound map. |
|
| 358 | 392 |
/// \return <tt>(*this)</tt> |
| 359 |
Circulation& |
|
| 393 |
Circulation& lowerMap(const LowerMap& map) {
|
|
| 360 | 394 |
_lo = ↦ |
| 361 | 395 |
return *this; |
| 362 | 396 |
} |
| 363 | 397 |
|
| 364 |
/// Sets the upper bound capacity map. |
|
| 398 |
/// Sets the upper bound (capacity) map. |
|
| 365 | 399 |
|
| 366 |
/// Sets the upper bound capacity map. |
|
| 400 |
/// Sets the upper bound (capacity) map. |
|
| 367 | 401 |
/// \return <tt>(*this)</tt> |
| 368 |
Circulation& |
|
| 402 |
Circulation& upperMap(const UpperMap& map) {
|
|
| 369 | 403 |
_up = ↦ |
| 370 | 404 |
return *this; |
| 371 | 405 |
} |
| 372 | 406 |
|
| 373 |
/// Sets the |
|
| 407 |
/// Sets the supply map. |
|
| 374 | 408 |
|
| 375 |
/// Sets the |
|
| 409 |
/// Sets the supply map. |
|
| 376 | 410 |
/// \return <tt>(*this)</tt> |
| 377 |
Circulation& deltaMap(const DeltaMap& map) {
|
|
| 378 |
_delta = ↦ |
|
| 411 |
Circulation& supplyMap(const SupplyMap& map) {
|
|
| 412 |
_supply = ↦ |
|
| 379 | 413 |
return *this; |
| 380 | 414 |
} |
| 381 | 415 |
|
| 382 | 416 |
/// \brief Sets the flow map. |
| 383 | 417 |
/// |
| 384 | 418 |
/// Sets the flow map. |
| 385 | 419 |
/// If you don't use this function before calling \ref run() or |
| 386 | 420 |
/// \ref init(), an instance will be allocated automatically. |
| 387 | 421 |
/// The destructor deallocates this automatically allocated map, |
| 388 | 422 |
/// of course. |
| 389 | 423 |
/// \return <tt>(*this)</tt> |
| 390 | 424 |
Circulation& flowMap(FlowMap& map) {
|
| 391 | 425 |
if (_local_flow) {
|
| 392 | 426 |
delete _flow; |
| 393 | 427 |
_local_flow = false; |
| 394 | 428 |
} |
| 395 | 429 |
_flow = ↦ |
| 396 | 430 |
return *this; |
| 397 | 431 |
} |
| 398 | 432 |
|
| 399 | 433 |
/// \brief Sets the elevator used by algorithm. |
| 400 | 434 |
/// |
| 401 | 435 |
/// Sets the elevator used by algorithm. |
| 402 | 436 |
/// If you don't use this function before calling \ref run() or |
| 403 | 437 |
/// \ref init(), an instance will be allocated automatically. |
| 404 | 438 |
/// The destructor deallocates this automatically allocated elevator, |
| 405 | 439 |
/// of course. |
| 406 | 440 |
/// \return <tt>(*this)</tt> |
| 407 | 441 |
Circulation& elevator(Elevator& elevator) {
|
| 408 | 442 |
if (_local_level) {
|
| 409 | 443 |
delete _level; |
| 410 | 444 |
_local_level = false; |
| 411 | 445 |
} |
| 412 | 446 |
_level = &elevator; |
| 413 | 447 |
return *this; |
| 414 | 448 |
} |
| 415 | 449 |
|
| 416 | 450 |
/// \brief Returns a const reference to the elevator. |
| 417 | 451 |
/// |
| 418 | 452 |
/// Returns a const reference to the elevator. |
| 419 | 453 |
/// |
| 420 | 454 |
/// \pre Either \ref run() or \ref init() must be called before |
| 421 | 455 |
/// using this function. |
| 422 | 456 |
const Elevator& elevator() const {
|
| 423 | 457 |
return *_level; |
| 424 | 458 |
} |
| 425 | 459 |
|
| 426 |
/// \brief Sets the tolerance used by algorithm. |
|
| 460 |
/// \brief Sets the tolerance used by the algorithm. |
|
| 427 | 461 |
/// |
| 428 |
/// Sets the tolerance used by algorithm. |
|
| 429 |
Circulation& tolerance(const Tolerance& tolerance) const {
|
|
| 462 |
/// Sets the tolerance object used by the algorithm. |
|
| 463 |
/// \return <tt>(*this)</tt> |
|
| 464 |
Circulation& tolerance(const Tolerance& tolerance) {
|
|
| 430 | 465 |
_tol = tolerance; |
| 431 | 466 |
return *this; |
| 432 | 467 |
} |
| 433 | 468 |
|
| 434 | 469 |
/// \brief Returns a const reference to the tolerance. |
| 435 | 470 |
/// |
| 436 |
/// Returns a const reference to the tolerance |
|
| 471 |
/// Returns a const reference to the tolerance object used by |
|
| 472 |
/// the algorithm. |
|
| 437 | 473 |
const Tolerance& tolerance() const {
|
| 438 |
return |
|
| 474 |
return _tol; |
|
| 439 | 475 |
} |
| 440 | 476 |
|
| 441 | 477 |
/// \name Execution Control |
| 442 | 478 |
/// The simplest way to execute the algorithm is to call \ref run().\n |
| 443 |
/// If you need more control on the initial solution or the execution, |
|
| 444 |
/// first you have to call one of the \ref init() functions, then |
|
| 479 |
/// If you need better control on the initial solution or the execution, |
|
| 480 |
/// you have to call one of the \ref init() functions first, then |
|
| 445 | 481 |
/// the \ref start() function. |
| 446 | 482 |
|
| 447 | 483 |
///@{
|
| 448 | 484 |
|
| 449 | 485 |
/// Initializes the internal data structures. |
| 450 | 486 |
|
| 451 | 487 |
/// Initializes the internal data structures and sets all flow values |
| 452 | 488 |
/// to the lower bound. |
| 453 | 489 |
void init() |
| 454 | 490 |
{
|
| 491 |
LEMON_DEBUG(checkBoundMaps(), |
|
| 492 |
"Upper bounds must be greater or equal to the lower bounds"); |
|
| 493 |
|
|
| 455 | 494 |
createStructures(); |
| 456 | 495 |
|
| 457 | 496 |
for(NodeIt n(_g);n!=INVALID;++n) {
|
| 458 |
|
|
| 497 |
(*_excess)[n] = (*_supply)[n]; |
|
| 459 | 498 |
} |
| 460 | 499 |
|
| 461 | 500 |
for (ArcIt e(_g);e!=INVALID;++e) {
|
| 462 | 501 |
_flow->set(e, (*_lo)[e]); |
| 463 |
_excess->set(_g.target(e), (*_excess)[_g.target(e)] + (*_flow)[e]); |
|
| 464 |
_excess->set(_g.source(e), (*_excess)[_g.source(e)] - (*_flow)[e]); |
|
| 502 |
(*_excess)[_g.target(e)] += (*_flow)[e]; |
|
| 503 |
(*_excess)[_g.source(e)] -= (*_flow)[e]; |
|
| 465 | 504 |
} |
| 466 | 505 |
|
| 467 | 506 |
// global relabeling tested, but in general case it provides |
| 468 | 507 |
// worse performance for random digraphs |
| 469 | 508 |
_level->initStart(); |
| 470 | 509 |
for(NodeIt n(_g);n!=INVALID;++n) |
| 471 | 510 |
_level->initAddItem(n); |
| 472 | 511 |
_level->initFinish(); |
| 473 | 512 |
for(NodeIt n(_g);n!=INVALID;++n) |
| 474 | 513 |
if(_tol.positive((*_excess)[n])) |
| 475 | 514 |
_level->activate(n); |
| 476 | 515 |
} |
| 477 | 516 |
|
| 478 | 517 |
/// Initializes the internal data structures using a greedy approach. |
| 479 | 518 |
|
| 480 | 519 |
/// Initializes the internal data structures using a greedy approach |
| 481 | 520 |
/// to construct the initial solution. |
| 482 | 521 |
void greedyInit() |
| 483 | 522 |
{
|
| 523 |
LEMON_DEBUG(checkBoundMaps(), |
|
| 524 |
"Upper bounds must be greater or equal to the lower bounds"); |
|
| 525 |
|
|
| 484 | 526 |
createStructures(); |
| 485 | 527 |
|
| 486 | 528 |
for(NodeIt n(_g);n!=INVALID;++n) {
|
| 487 |
|
|
| 529 |
(*_excess)[n] = (*_supply)[n]; |
|
| 488 | 530 |
} |
| 489 | 531 |
|
| 490 | 532 |
for (ArcIt e(_g);e!=INVALID;++e) {
|
| 491 |
if (!_tol. |
|
| 533 |
if (!_tol.less(-(*_excess)[_g.target(e)], (*_up)[e])) {
|
|
| 492 | 534 |
_flow->set(e, (*_up)[e]); |
| 493 |
_excess->set(_g.target(e), (*_excess)[_g.target(e)] + (*_up)[e]); |
|
| 494 |
_excess->set(_g.source(e), (*_excess)[_g.source(e)] - (*_up)[e]); |
|
| 495 |
|
|
| 535 |
(*_excess)[_g.target(e)] += (*_up)[e]; |
|
| 536 |
(*_excess)[_g.source(e)] -= (*_up)[e]; |
|
| 537 |
} else if (_tol.less(-(*_excess)[_g.target(e)], (*_lo)[e])) {
|
|
| 496 | 538 |
_flow->set(e, (*_lo)[e]); |
| 497 |
_excess->set(_g.target(e), (*_excess)[_g.target(e)] + (*_lo)[e]); |
|
| 498 |
_excess->set(_g.source(e), (*_excess)[_g.source(e)] - (*_lo)[e]); |
|
| 539 |
(*_excess)[_g.target(e)] += (*_lo)[e]; |
|
| 540 |
(*_excess)[_g.source(e)] -= (*_lo)[e]; |
|
| 499 | 541 |
} else {
|
| 500 | 542 |
Value fc = -(*_excess)[_g.target(e)]; |
| 501 | 543 |
_flow->set(e, fc); |
| 502 |
_excess->set(_g.target(e), 0); |
|
| 503 |
_excess->set(_g.source(e), (*_excess)[_g.source(e)] - fc); |
|
| 544 |
(*_excess)[_g.target(e)] = 0; |
|
| 545 |
(*_excess)[_g.source(e)] -= fc; |
|
| 504 | 546 |
} |
| 505 | 547 |
} |
| 506 | 548 |
|
| 507 | 549 |
_level->initStart(); |
| 508 | 550 |
for(NodeIt n(_g);n!=INVALID;++n) |
| 509 | 551 |
_level->initAddItem(n); |
| 510 | 552 |
_level->initFinish(); |
| 511 | 553 |
for(NodeIt n(_g);n!=INVALID;++n) |
| 512 | 554 |
if(_tol.positive((*_excess)[n])) |
| 513 | 555 |
_level->activate(n); |
| 514 | 556 |
} |
| 515 | 557 |
|
| 516 | 558 |
///Executes the algorithm |
| 517 | 559 |
|
| 518 | 560 |
///This function executes the algorithm. |
| 519 | 561 |
/// |
| 520 | 562 |
///\return \c true if a feasible circulation is found. |
| 521 | 563 |
/// |
| 522 | 564 |
///\sa barrier() |
| 523 | 565 |
///\sa barrierMap() |
| 524 | 566 |
bool start() |
| 525 | 567 |
{
|
| 526 | 568 |
|
| 527 | 569 |
Node act; |
| 528 | 570 |
Node bact=INVALID; |
| 529 | 571 |
Node last_activated=INVALID; |
| 530 | 572 |
while((act=_level->highestActive())!=INVALID) {
|
| 531 | 573 |
int actlevel=(*_level)[act]; |
| 532 | 574 |
int mlevel=_node_num; |
| 533 | 575 |
Value exc=(*_excess)[act]; |
| 534 | 576 |
|
| 535 | 577 |
for(OutArcIt e(_g,act);e!=INVALID; ++e) {
|
| 536 | 578 |
Node v = _g.target(e); |
| 537 | 579 |
Value fc=(*_up)[e]-(*_flow)[e]; |
| 538 | 580 |
if(!_tol.positive(fc)) continue; |
| 539 | 581 |
if((*_level)[v]<actlevel) {
|
| 540 | 582 |
if(!_tol.less(fc, exc)) {
|
| 541 | 583 |
_flow->set(e, (*_flow)[e] + exc); |
| 542 |
|
|
| 584 |
(*_excess)[v] += exc; |
|
| 543 | 585 |
if(!_level->active(v) && _tol.positive((*_excess)[v])) |
| 544 | 586 |
_level->activate(v); |
| 545 |
|
|
| 587 |
(*_excess)[act] = 0; |
|
| 546 | 588 |
_level->deactivate(act); |
| 547 | 589 |
goto next_l; |
| 548 | 590 |
} |
| 549 | 591 |
else {
|
| 550 | 592 |
_flow->set(e, (*_up)[e]); |
| 551 |
|
|
| 593 |
(*_excess)[v] += fc; |
|
| 552 | 594 |
if(!_level->active(v) && _tol.positive((*_excess)[v])) |
| 553 | 595 |
_level->activate(v); |
| 554 | 596 |
exc-=fc; |
| 555 | 597 |
} |
| 556 | 598 |
} |
| 557 | 599 |
else if((*_level)[v]<mlevel) mlevel=(*_level)[v]; |
| 558 | 600 |
} |
| 559 | 601 |
for(InArcIt e(_g,act);e!=INVALID; ++e) {
|
| 560 | 602 |
Node v = _g.source(e); |
| 561 | 603 |
Value fc=(*_flow)[e]-(*_lo)[e]; |
| 562 | 604 |
if(!_tol.positive(fc)) continue; |
| 563 | 605 |
if((*_level)[v]<actlevel) {
|
| 564 | 606 |
if(!_tol.less(fc, exc)) {
|
| 565 | 607 |
_flow->set(e, (*_flow)[e] - exc); |
| 566 |
|
|
| 608 |
(*_excess)[v] += exc; |
|
| 567 | 609 |
if(!_level->active(v) && _tol.positive((*_excess)[v])) |
| 568 | 610 |
_level->activate(v); |
| 569 |
|
|
| 611 |
(*_excess)[act] = 0; |
|
| 570 | 612 |
_level->deactivate(act); |
| 571 | 613 |
goto next_l; |
| 572 | 614 |
} |
| 573 | 615 |
else {
|
| 574 | 616 |
_flow->set(e, (*_lo)[e]); |
| 575 |
|
|
| 617 |
(*_excess)[v] += fc; |
|
| 576 | 618 |
if(!_level->active(v) && _tol.positive((*_excess)[v])) |
| 577 | 619 |
_level->activate(v); |
| 578 | 620 |
exc-=fc; |
| 579 | 621 |
} |
| 580 | 622 |
} |
| 581 | 623 |
else if((*_level)[v]<mlevel) mlevel=(*_level)[v]; |
| 582 | 624 |
} |
| 583 | 625 |
|
| 584 |
_excess |
|
| 626 |
(*_excess)[act] = exc; |
|
| 585 | 627 |
if(!_tol.positive(exc)) _level->deactivate(act); |
| 586 | 628 |
else if(mlevel==_node_num) {
|
| 587 | 629 |
_level->liftHighestActiveToTop(); |
| 588 | 630 |
_el = _node_num; |
| 589 | 631 |
return false; |
| 590 | 632 |
} |
| 591 | 633 |
else {
|
| 592 | 634 |
_level->liftHighestActive(mlevel+1); |
| 593 | 635 |
if(_level->onLevel(actlevel)==0) {
|
| 594 | 636 |
_el = actlevel; |
| 595 | 637 |
return false; |
| 596 | 638 |
} |
| 597 | 639 |
} |
| 598 | 640 |
next_l: |
| 599 | 641 |
; |
| 600 | 642 |
} |
| 601 | 643 |
return true; |
| 602 | 644 |
} |
| 603 | 645 |
|
| 604 | 646 |
/// Runs the algorithm. |
| 605 | 647 |
|
| 606 | 648 |
/// This function runs the algorithm. |
| 607 | 649 |
/// |
| 608 | 650 |
/// \return \c true if a feasible circulation is found. |
| 609 | 651 |
/// |
| 610 | 652 |
/// \note Apart from the return value, c.run() is just a shortcut of |
| 611 | 653 |
/// the following code. |
| 612 | 654 |
/// \code |
| 613 | 655 |
/// c.greedyInit(); |
| 614 | 656 |
/// c.start(); |
| 615 | 657 |
/// \endcode |
| 616 | 658 |
bool run() {
|
| 617 | 659 |
greedyInit(); |
| 618 | 660 |
return start(); |
| 619 | 661 |
} |
| 620 | 662 |
|
| 621 | 663 |
/// @} |
| 622 | 664 |
|
| 623 | 665 |
/// \name Query Functions |
| 624 | 666 |
/// The results of the circulation algorithm can be obtained using |
| 625 | 667 |
/// these functions.\n |
| 626 | 668 |
/// Either \ref run() or \ref start() should be called before |
| 627 | 669 |
/// using them. |
| 628 | 670 |
|
| 629 | 671 |
///@{
|
| 630 | 672 |
|
| 631 |
/// \brief Returns the flow on the given arc. |
|
| 673 |
/// \brief Returns the flow value on the given arc. |
|
| 632 | 674 |
/// |
| 633 |
/// Returns the flow on the given arc. |
|
| 675 |
/// Returns the flow value on the given arc. |
|
| 634 | 676 |
/// |
| 635 | 677 |
/// \pre Either \ref run() or \ref init() must be called before |
| 636 | 678 |
/// using this function. |
| 637 | 679 |
Value flow(const Arc& arc) const {
|
| 638 | 680 |
return (*_flow)[arc]; |
| 639 | 681 |
} |
| 640 | 682 |
|
| 641 | 683 |
/// \brief Returns a const reference to the flow map. |
| 642 | 684 |
/// |
| 643 | 685 |
/// Returns a const reference to the arc map storing the found flow. |
| 644 | 686 |
/// |
| 645 | 687 |
/// \pre Either \ref run() or \ref init() must be called before |
| 646 | 688 |
/// using this function. |
| 647 | 689 |
const FlowMap& flowMap() const {
|
| 648 | 690 |
return *_flow; |
| 649 | 691 |
} |
| 650 | 692 |
|
| 651 | 693 |
/** |
| 652 | 694 |
\brief Returns \c true if the given node is in a barrier. |
| 653 | 695 |
|
| 654 | 696 |
Barrier is a set \e B of nodes for which |
| 655 | 697 |
|
| 656 |
\f[ \sum_{a\in\delta_{out}(B)} upper(a) -
|
|
| 657 |
\sum_{a\in\delta_{in}(B)} lower(a) < \sum_{v\in B}delta(v) \f]
|
|
| 698 |
\f[ \sum_{uv\in A: u\in B} upper(uv) -
|
|
| 699 |
\sum_{uv\in A: v\in B} lower(uv) < \sum_{v\in B} sup(v) \f]
|
|
| 658 | 700 |
|
| 659 | 701 |
holds. The existence of a set with this property prooves that a |
| 660 | 702 |
feasible circualtion cannot exist. |
| 661 | 703 |
|
| 662 | 704 |
This function returns \c true if the given node is in the found |
| 663 | 705 |
barrier. If a feasible circulation is found, the function |
| 664 | 706 |
gives back \c false for every node. |
| 665 | 707 |
|
| 666 | 708 |
\pre Either \ref run() or \ref init() must be called before |
| 667 | 709 |
using this function. |
| 668 | 710 |
|
| 669 | 711 |
\sa barrierMap() |
| 670 | 712 |
\sa checkBarrier() |
| 671 | 713 |
*/ |
| 672 | 714 |
bool barrier(const Node& node) const |
| 673 | 715 |
{
|
| 674 | 716 |
return (*_level)[node] >= _el; |
| 675 | 717 |
} |
| 676 | 718 |
|
| 677 | 719 |
/// \brief Gives back a barrier. |
| 678 | 720 |
/// |
| 679 | 721 |
/// This function sets \c bar to the characteristic vector of the |
| 680 | 722 |
/// found barrier. \c bar should be a \ref concepts::WriteMap "writable" |
| 681 | 723 |
/// node map with \c bool (or convertible) value type. |
| 682 | 724 |
/// |
| 683 | 725 |
/// If a feasible circulation is found, the function gives back an |
| 684 | 726 |
/// empty set, so \c bar[v] will be \c false for all nodes \c v. |
| 685 | 727 |
/// |
| 686 | 728 |
/// \note This function calls \ref barrier() for each node, |
| 687 |
/// so it runs in |
|
| 729 |
/// so it runs in O(n) time. |
|
| 688 | 730 |
/// |
| 689 | 731 |
/// \pre Either \ref run() or \ref init() must be called before |
| 690 | 732 |
/// using this function. |
| 691 | 733 |
/// |
| 692 | 734 |
/// \sa barrier() |
| 693 | 735 |
/// \sa checkBarrier() |
| 694 | 736 |
template<class BarrierMap> |
| 695 | 737 |
void barrierMap(BarrierMap &bar) const |
| 696 | 738 |
{
|
| 697 | 739 |
for(NodeIt n(_g);n!=INVALID;++n) |
| 698 | 740 |
bar.set(n, (*_level)[n] >= _el); |
| 699 | 741 |
} |
| 700 | 742 |
|
| 701 | 743 |
/// @} |
| 702 | 744 |
|
| 703 | 745 |
/// \name Checker Functions |
| 704 | 746 |
/// The feasibility of the results can be checked using |
| 705 | 747 |
/// these functions.\n |
| 706 | 748 |
/// Either \ref run() or \ref start() should be called before |
| 707 | 749 |
/// using them. |
| 708 | 750 |
|
| 709 | 751 |
///@{
|
| 710 | 752 |
|
| 711 | 753 |
///Check if the found flow is a feasible circulation |
| 712 | 754 |
|
| 713 | 755 |
///Check if the found flow is a feasible circulation, |
| 714 | 756 |
/// |
| 715 | 757 |
bool checkFlow() const {
|
| 716 | 758 |
for(ArcIt e(_g);e!=INVALID;++e) |
| 717 | 759 |
if((*_flow)[e]<(*_lo)[e]||(*_flow)[e]>(*_up)[e]) return false; |
| 718 | 760 |
for(NodeIt n(_g);n!=INVALID;++n) |
| 719 | 761 |
{
|
| 720 |
Value dif=-(* |
|
| 762 |
Value dif=-(*_supply)[n]; |
|
| 721 | 763 |
for(InArcIt e(_g,n);e!=INVALID;++e) dif-=(*_flow)[e]; |
| 722 | 764 |
for(OutArcIt e(_g,n);e!=INVALID;++e) dif+=(*_flow)[e]; |
| 723 | 765 |
if(_tol.negative(dif)) return false; |
| 724 | 766 |
} |
| 725 | 767 |
return true; |
| 726 | 768 |
} |
| 727 | 769 |
|
| 728 | 770 |
///Check whether or not the last execution provides a barrier |
| 729 | 771 |
|
| 730 | 772 |
///Check whether or not the last execution provides a barrier. |
| 731 | 773 |
///\sa barrier() |
| 732 | 774 |
///\sa barrierMap() |
| 733 | 775 |
bool checkBarrier() const |
| 734 | 776 |
{
|
| 735 | 777 |
Value delta=0; |
| 778 |
Value inf_cap = std::numeric_limits<Value>::has_infinity ? |
|
| 779 |
std::numeric_limits<Value>::infinity() : |
|
| 780 |
std::numeric_limits<Value>::max(); |
|
| 736 | 781 |
for(NodeIt n(_g);n!=INVALID;++n) |
| 737 | 782 |
if(barrier(n)) |
| 738 |
delta-=(* |
|
| 783 |
delta-=(*_supply)[n]; |
|
| 739 | 784 |
for(ArcIt e(_g);e!=INVALID;++e) |
| 740 | 785 |
{
|
| 741 | 786 |
Node s=_g.source(e); |
| 742 | 787 |
Node t=_g.target(e); |
| 743 |
if(barrier(s)&&!barrier(t)) |
|
| 788 |
if(barrier(s)&&!barrier(t)) {
|
|
| 789 |
if (_tol.less(inf_cap - (*_up)[e], delta)) return false; |
|
| 790 |
delta+=(*_up)[e]; |
|
| 791 |
} |
|
| 744 | 792 |
else if(barrier(t)&&!barrier(s)) delta-=(*_lo)[e]; |
| 745 | 793 |
} |
| 746 | 794 |
return _tol.negative(delta); |
| 747 | 795 |
} |
| 748 | 796 |
|
| 749 | 797 |
/// @} |
| 750 | 798 |
|
| 751 | 799 |
}; |
| 752 | 800 |
|
| 753 | 801 |
} |
| 754 | 802 |
|
| 755 | 803 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2008 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <lemon/clp.h> |
| 20 | 20 |
#include <coin/ClpSimplex.hpp> |
| 21 | 21 |
|
| 22 | 22 |
namespace lemon {
|
| 23 | 23 |
|
| 24 | 24 |
ClpLp::ClpLp() {
|
| 25 | 25 |
_prob = new ClpSimplex(); |
| 26 | 26 |
_init_temporals(); |
| 27 |
messageLevel( |
|
| 27 |
messageLevel(MESSAGE_NOTHING); |
|
| 28 | 28 |
} |
| 29 | 29 |
|
| 30 | 30 |
ClpLp::ClpLp(const ClpLp& other) {
|
| 31 | 31 |
_prob = new ClpSimplex(*other._prob); |
| 32 | 32 |
rows = other.rows; |
| 33 | 33 |
cols = other.cols; |
| 34 | 34 |
_init_temporals(); |
| 35 |
messageLevel( |
|
| 35 |
messageLevel(MESSAGE_NOTHING); |
|
| 36 | 36 |
} |
| 37 | 37 |
|
| 38 | 38 |
ClpLp::~ClpLp() {
|
| 39 | 39 |
delete _prob; |
| 40 | 40 |
_clear_temporals(); |
| 41 | 41 |
} |
| 42 | 42 |
|
| 43 | 43 |
void ClpLp::_init_temporals() {
|
| 44 | 44 |
_primal_ray = 0; |
| 45 | 45 |
_dual_ray = 0; |
| 46 | 46 |
} |
| 47 | 47 |
|
| 48 | 48 |
void ClpLp::_clear_temporals() {
|
| 49 | 49 |
if (_primal_ray) {
|
| 50 | 50 |
delete[] _primal_ray; |
| 51 | 51 |
_primal_ray = 0; |
| 52 | 52 |
} |
| 53 | 53 |
if (_dual_ray) {
|
| 54 | 54 |
delete[] _dual_ray; |
| 55 | 55 |
_dual_ray = 0; |
| 56 | 56 |
} |
| 57 | 57 |
} |
| 58 | 58 |
|
| 59 |
ClpLp* ClpLp:: |
|
| 59 |
ClpLp* ClpLp::newSolver() const {
|
|
| 60 | 60 |
ClpLp* newlp = new ClpLp; |
| 61 | 61 |
return newlp; |
| 62 | 62 |
} |
| 63 | 63 |
|
| 64 |
ClpLp* ClpLp:: |
|
| 64 |
ClpLp* ClpLp::cloneSolver() const {
|
|
| 65 | 65 |
ClpLp* copylp = new ClpLp(*this); |
| 66 | 66 |
return copylp; |
| 67 | 67 |
} |
| 68 | 68 |
|
| 69 | 69 |
const char* ClpLp::_solverName() const { return "ClpLp"; }
|
| 70 | 70 |
|
| 71 | 71 |
int ClpLp::_addCol() {
|
| 72 | 72 |
_prob->addColumn(0, 0, 0, -COIN_DBL_MAX, COIN_DBL_MAX, 0.0); |
| 73 | 73 |
return _prob->numberColumns() - 1; |
| 74 | 74 |
} |
| 75 | 75 |
|
| 76 | 76 |
int ClpLp::_addRow() {
|
| 77 | 77 |
_prob->addRow(0, 0, 0, -COIN_DBL_MAX, COIN_DBL_MAX); |
| 78 | 78 |
return _prob->numberRows() - 1; |
| 79 | 79 |
} |
| 80 | 80 |
|
| 81 |
int ClpLp::_addRow(Value l, ExprIterator b, ExprIterator e, Value u) {
|
|
| 82 |
std::vector<int> indexes; |
|
| 83 |
std::vector<Value> values; |
|
| 84 |
|
|
| 85 |
for(ExprIterator it = b; it != e; ++it) {
|
|
| 86 |
indexes.push_back(it->first); |
|
| 87 |
values.push_back(it->second); |
|
| 88 |
} |
|
| 89 |
|
|
| 90 |
_prob->addRow(values.size(), &indexes.front(), &values.front(), l, u); |
|
| 91 |
return _prob->numberRows() - 1; |
|
| 92 |
} |
|
| 93 |
|
|
| 81 | 94 |
|
| 82 | 95 |
void ClpLp::_eraseCol(int c) {
|
| 83 | 96 |
_col_names_ref.erase(_prob->getColumnName(c)); |
| 84 | 97 |
_prob->deleteColumns(1, &c); |
| 85 | 98 |
} |
| 86 | 99 |
|
| 87 | 100 |
void ClpLp::_eraseRow(int r) {
|
| 88 | 101 |
_row_names_ref.erase(_prob->getRowName(r)); |
| 89 | 102 |
_prob->deleteRows(1, &r); |
| 90 | 103 |
} |
| 91 | 104 |
|
| 92 | 105 |
void ClpLp::_eraseColId(int i) {
|
| 93 | 106 |
cols.eraseIndex(i); |
| 94 | 107 |
cols.shiftIndices(i); |
| 95 | 108 |
} |
| 96 | 109 |
|
| 97 | 110 |
void ClpLp::_eraseRowId(int i) {
|
| 98 | 111 |
rows.eraseIndex(i); |
| 99 | 112 |
rows.shiftIndices(i); |
| 100 | 113 |
} |
| 101 | 114 |
|
| 102 | 115 |
void ClpLp::_getColName(int c, std::string& name) const {
|
| 103 | 116 |
name = _prob->getColumnName(c); |
| 104 | 117 |
} |
| 105 | 118 |
|
| 106 | 119 |
void ClpLp::_setColName(int c, const std::string& name) {
|
| 107 | 120 |
_prob->setColumnName(c, const_cast<std::string&>(name)); |
| 108 | 121 |
_col_names_ref[name] = c; |
| 109 | 122 |
} |
| 110 | 123 |
|
| 111 | 124 |
int ClpLp::_colByName(const std::string& name) const {
|
| 112 | 125 |
std::map<std::string, int>::const_iterator it = _col_names_ref.find(name); |
| 113 | 126 |
return it != _col_names_ref.end() ? it->second : -1; |
| 114 | 127 |
} |
| 115 | 128 |
|
| 116 | 129 |
void ClpLp::_getRowName(int r, std::string& name) const {
|
| 117 | 130 |
name = _prob->getRowName(r); |
| 118 | 131 |
} |
| 119 | 132 |
|
| 120 | 133 |
void ClpLp::_setRowName(int r, const std::string& name) {
|
| 121 | 134 |
_prob->setRowName(r, const_cast<std::string&>(name)); |
| 122 | 135 |
_row_names_ref[name] = r; |
| 123 | 136 |
} |
| 124 | 137 |
|
| 125 | 138 |
int ClpLp::_rowByName(const std::string& name) const {
|
| 126 | 139 |
std::map<std::string, int>::const_iterator it = _row_names_ref.find(name); |
| 127 | 140 |
return it != _row_names_ref.end() ? it->second : -1; |
| 128 | 141 |
} |
| 129 | 142 |
|
| 130 | 143 |
|
| 131 | 144 |
void ClpLp::_setRowCoeffs(int ix, ExprIterator b, ExprIterator e) {
|
| 132 | 145 |
std::map<int, Value> coeffs; |
| 133 | 146 |
|
| 134 | 147 |
int n = _prob->clpMatrix()->getNumCols(); |
| 135 | 148 |
|
| 136 | 149 |
const int* indices = _prob->clpMatrix()->getIndices(); |
| 137 | 150 |
const double* elements = _prob->clpMatrix()->getElements(); |
| 138 | 151 |
|
| 139 | 152 |
for (int i = 0; i < n; ++i) {
|
| 140 | 153 |
CoinBigIndex begin = _prob->clpMatrix()->getVectorStarts()[i]; |
| 141 | 154 |
CoinBigIndex end = begin + _prob->clpMatrix()->getVectorLengths()[i]; |
| 142 | 155 |
|
| 143 | 156 |
const int* it = std::lower_bound(indices + begin, indices + end, ix); |
| 144 | 157 |
if (it != indices + end && *it == ix && elements[it - indices] != 0.0) {
|
| 145 | 158 |
coeffs[i] = 0.0; |
| 146 | 159 |
} |
| 147 | 160 |
} |
| 148 | 161 |
|
| 149 | 162 |
for (ExprIterator it = b; it != e; ++it) {
|
| 150 | 163 |
coeffs[it->first] = it->second; |
| 151 | 164 |
} |
| 152 | 165 |
|
| 153 | 166 |
for (std::map<int, Value>::iterator it = coeffs.begin(); |
| 154 | 167 |
it != coeffs.end(); ++it) {
|
| 155 | 168 |
_prob->modifyCoefficient(ix, it->first, it->second); |
| 156 | 169 |
} |
| 157 | 170 |
} |
| 158 | 171 |
|
| 159 | 172 |
void ClpLp::_getRowCoeffs(int ix, InsertIterator b) const {
|
| 160 | 173 |
int n = _prob->clpMatrix()->getNumCols(); |
| 161 | 174 |
|
| 162 | 175 |
const int* indices = _prob->clpMatrix()->getIndices(); |
| 163 | 176 |
const double* elements = _prob->clpMatrix()->getElements(); |
| 164 | 177 |
|
| 165 | 178 |
for (int i = 0; i < n; ++i) {
|
| 166 | 179 |
CoinBigIndex begin = _prob->clpMatrix()->getVectorStarts()[i]; |
| 167 | 180 |
CoinBigIndex end = begin + _prob->clpMatrix()->getVectorLengths()[i]; |
| 168 | 181 |
|
| 169 | 182 |
const int* it = std::lower_bound(indices + begin, indices + end, ix); |
| 170 | 183 |
if (it != indices + end && *it == ix) {
|
| 171 | 184 |
*b = std::make_pair(i, elements[it - indices]); |
| 172 | 185 |
} |
| 173 | 186 |
} |
| 174 | 187 |
} |
| 175 | 188 |
|
| 176 | 189 |
void ClpLp::_setColCoeffs(int ix, ExprIterator b, ExprIterator e) {
|
| 177 | 190 |
std::map<int, Value> coeffs; |
| 178 | 191 |
|
| 179 | 192 |
CoinBigIndex begin = _prob->clpMatrix()->getVectorStarts()[ix]; |
| 180 | 193 |
CoinBigIndex end = begin + _prob->clpMatrix()->getVectorLengths()[ix]; |
| 181 | 194 |
|
| 182 | 195 |
const int* indices = _prob->clpMatrix()->getIndices(); |
| 183 | 196 |
const double* elements = _prob->clpMatrix()->getElements(); |
| 184 | 197 |
|
| 185 | 198 |
for (CoinBigIndex i = begin; i != end; ++i) {
|
| 186 | 199 |
if (elements[i] != 0.0) {
|
| 187 | 200 |
coeffs[indices[i]] = 0.0; |
| 188 | 201 |
} |
| 189 | 202 |
} |
| 190 | 203 |
for (ExprIterator it = b; it != e; ++it) {
|
| 191 | 204 |
coeffs[it->first] = it->second; |
| 192 | 205 |
} |
| 193 | 206 |
for (std::map<int, Value>::iterator it = coeffs.begin(); |
| 194 | 207 |
it != coeffs.end(); ++it) {
|
| 195 | 208 |
_prob->modifyCoefficient(it->first, ix, it->second); |
| 196 | 209 |
} |
| 197 | 210 |
} |
| 198 | 211 |
|
| 199 | 212 |
void ClpLp::_getColCoeffs(int ix, InsertIterator b) const {
|
| 200 | 213 |
CoinBigIndex begin = _prob->clpMatrix()->getVectorStarts()[ix]; |
| 201 | 214 |
CoinBigIndex end = begin + _prob->clpMatrix()->getVectorLengths()[ix]; |
| 202 | 215 |
|
| 203 | 216 |
const int* indices = _prob->clpMatrix()->getIndices(); |
| 204 | 217 |
const double* elements = _prob->clpMatrix()->getElements(); |
| 205 | 218 |
|
| 206 | 219 |
for (CoinBigIndex i = begin; i != end; ++i) {
|
| 207 | 220 |
*b = std::make_pair(indices[i], elements[i]); |
| 208 | 221 |
++b; |
| 209 | 222 |
} |
| 210 | 223 |
} |
| 211 | 224 |
|
| 212 | 225 |
void ClpLp::_setCoeff(int ix, int jx, Value value) {
|
| 213 | 226 |
_prob->modifyCoefficient(ix, jx, value); |
| 214 | 227 |
} |
| 215 | 228 |
|
| 216 | 229 |
ClpLp::Value ClpLp::_getCoeff(int ix, int jx) const {
|
| 217 | 230 |
CoinBigIndex begin = _prob->clpMatrix()->getVectorStarts()[ix]; |
| 218 | 231 |
CoinBigIndex end = begin + _prob->clpMatrix()->getVectorLengths()[ix]; |
| 219 | 232 |
|
| 220 | 233 |
const int* indices = _prob->clpMatrix()->getIndices(); |
| 221 | 234 |
const double* elements = _prob->clpMatrix()->getElements(); |
| 222 | 235 |
|
| 223 | 236 |
const int* it = std::lower_bound(indices + begin, indices + end, jx); |
| 224 | 237 |
if (it != indices + end && *it == jx) {
|
| 225 | 238 |
return elements[it - indices]; |
| 226 | 239 |
} else {
|
| 227 | 240 |
return 0.0; |
| 228 | 241 |
} |
| 229 | 242 |
} |
| 230 | 243 |
|
| 231 | 244 |
void ClpLp::_setColLowerBound(int i, Value lo) {
|
| 232 | 245 |
_prob->setColumnLower(i, lo == - INF ? - COIN_DBL_MAX : lo); |
| 233 | 246 |
} |
| 234 | 247 |
|
| 235 | 248 |
ClpLp::Value ClpLp::_getColLowerBound(int i) const {
|
| 236 | 249 |
double val = _prob->getColLower()[i]; |
| 237 | 250 |
return val == - COIN_DBL_MAX ? - INF : val; |
| 238 | 251 |
} |
| 239 | 252 |
|
| 240 | 253 |
void ClpLp::_setColUpperBound(int i, Value up) {
|
| 241 | 254 |
_prob->setColumnUpper(i, up == INF ? COIN_DBL_MAX : up); |
| 242 | 255 |
} |
| 243 | 256 |
|
| 244 | 257 |
ClpLp::Value ClpLp::_getColUpperBound(int i) const {
|
| 245 | 258 |
double val = _prob->getColUpper()[i]; |
| 246 | 259 |
return val == COIN_DBL_MAX ? INF : val; |
| 247 | 260 |
} |
| 248 | 261 |
|
| 249 | 262 |
void ClpLp::_setRowLowerBound(int i, Value lo) {
|
| 250 | 263 |
_prob->setRowLower(i, lo == - INF ? - COIN_DBL_MAX : lo); |
| 251 | 264 |
} |
| 252 | 265 |
|
| 253 | 266 |
ClpLp::Value ClpLp::_getRowLowerBound(int i) const {
|
| 254 | 267 |
double val = _prob->getRowLower()[i]; |
| 255 | 268 |
return val == - COIN_DBL_MAX ? - INF : val; |
| 256 | 269 |
} |
| 257 | 270 |
|
| 258 | 271 |
void ClpLp::_setRowUpperBound(int i, Value up) {
|
| 259 | 272 |
_prob->setRowUpper(i, up == INF ? COIN_DBL_MAX : up); |
| 260 | 273 |
} |
| 261 | 274 |
|
| 262 | 275 |
ClpLp::Value ClpLp::_getRowUpperBound(int i) const {
|
| 263 | 276 |
double val = _prob->getRowUpper()[i]; |
| 264 | 277 |
return val == COIN_DBL_MAX ? INF : val; |
| 265 | 278 |
} |
| 266 | 279 |
|
| 267 | 280 |
void ClpLp::_setObjCoeffs(ExprIterator b, ExprIterator e) {
|
| 268 | 281 |
int num = _prob->clpMatrix()->getNumCols(); |
| 269 | 282 |
for (int i = 0; i < num; ++i) {
|
| 270 | 283 |
_prob->setObjectiveCoefficient(i, 0.0); |
| 271 | 284 |
} |
| 272 | 285 |
for (ExprIterator it = b; it != e; ++it) {
|
| 273 | 286 |
_prob->setObjectiveCoefficient(it->first, it->second); |
| 274 | 287 |
} |
| 275 | 288 |
} |
| 276 | 289 |
|
| 277 | 290 |
void ClpLp::_getObjCoeffs(InsertIterator b) const {
|
| 278 | 291 |
int num = _prob->clpMatrix()->getNumCols(); |
| 279 | 292 |
for (int i = 0; i < num; ++i) {
|
| 280 | 293 |
Value coef = _prob->getObjCoefficients()[i]; |
| 281 | 294 |
if (coef != 0.0) {
|
| 282 | 295 |
*b = std::make_pair(i, coef); |
| 283 | 296 |
++b; |
| 284 | 297 |
} |
| 285 | 298 |
} |
| 286 | 299 |
} |
| 287 | 300 |
|
| 288 | 301 |
void ClpLp::_setObjCoeff(int i, Value obj_coef) {
|
| 289 | 302 |
_prob->setObjectiveCoefficient(i, obj_coef); |
| 290 | 303 |
} |
| 291 | 304 |
|
| 292 | 305 |
ClpLp::Value ClpLp::_getObjCoeff(int i) const {
|
| 293 | 306 |
return _prob->getObjCoefficients()[i]; |
| 294 | 307 |
} |
| 295 | 308 |
|
| 296 | 309 |
ClpLp::SolveExitStatus ClpLp::_solve() {
|
| 297 | 310 |
return _prob->primal() >= 0 ? SOLVED : UNSOLVED; |
| 298 | 311 |
} |
| 299 | 312 |
|
| 300 | 313 |
ClpLp::SolveExitStatus ClpLp::solvePrimal() {
|
| 301 | 314 |
return _prob->primal() >= 0 ? SOLVED : UNSOLVED; |
| 302 | 315 |
} |
| 303 | 316 |
|
| 304 | 317 |
ClpLp::SolveExitStatus ClpLp::solveDual() {
|
| 305 | 318 |
return _prob->dual() >= 0 ? SOLVED : UNSOLVED; |
| 306 | 319 |
} |
| 307 | 320 |
|
| 308 | 321 |
ClpLp::SolveExitStatus ClpLp::solveBarrier() {
|
| 309 | 322 |
return _prob->barrier() >= 0 ? SOLVED : UNSOLVED; |
| 310 | 323 |
} |
| 311 | 324 |
|
| 312 | 325 |
ClpLp::Value ClpLp::_getPrimal(int i) const {
|
| 313 | 326 |
return _prob->primalColumnSolution()[i]; |
| 314 | 327 |
} |
| 315 | 328 |
ClpLp::Value ClpLp::_getPrimalValue() const {
|
| 316 | 329 |
return _prob->objectiveValue(); |
| 317 | 330 |
} |
| 318 | 331 |
|
| 319 | 332 |
ClpLp::Value ClpLp::_getDual(int i) const {
|
| 320 | 333 |
return _prob->dualRowSolution()[i]; |
| 321 | 334 |
} |
| 322 | 335 |
|
| 323 | 336 |
ClpLp::Value ClpLp::_getPrimalRay(int i) const {
|
| 324 | 337 |
if (!_primal_ray) {
|
| 325 | 338 |
_primal_ray = _prob->unboundedRay(); |
| 326 | 339 |
LEMON_ASSERT(_primal_ray != 0, "Primal ray is not provided"); |
| 327 | 340 |
} |
| 328 | 341 |
return _primal_ray[i]; |
| 329 | 342 |
} |
| 330 | 343 |
|
| 331 | 344 |
ClpLp::Value ClpLp::_getDualRay(int i) const {
|
| 332 | 345 |
if (!_dual_ray) {
|
| 333 | 346 |
_dual_ray = _prob->infeasibilityRay(); |
| 334 | 347 |
LEMON_ASSERT(_dual_ray != 0, "Dual ray is not provided"); |
| 335 | 348 |
} |
| 336 | 349 |
return _dual_ray[i]; |
| 337 | 350 |
} |
| 338 | 351 |
|
| 339 | 352 |
ClpLp::VarStatus ClpLp::_getColStatus(int i) const {
|
| 340 | 353 |
switch (_prob->getColumnStatus(i)) {
|
| 341 | 354 |
case ClpSimplex::basic: |
| 342 | 355 |
return BASIC; |
| 343 | 356 |
case ClpSimplex::isFree: |
| 344 | 357 |
return FREE; |
| 345 | 358 |
case ClpSimplex::atUpperBound: |
| 346 | 359 |
return UPPER; |
| 347 | 360 |
case ClpSimplex::atLowerBound: |
| 348 | 361 |
return LOWER; |
| 349 | 362 |
case ClpSimplex::isFixed: |
| 350 | 363 |
return FIXED; |
| 351 | 364 |
case ClpSimplex::superBasic: |
| 352 | 365 |
return FREE; |
| 353 | 366 |
default: |
| 354 | 367 |
LEMON_ASSERT(false, "Wrong column status"); |
| 355 | 368 |
return VarStatus(); |
| 356 | 369 |
} |
| 357 | 370 |
} |
| 358 | 371 |
|
| 359 | 372 |
ClpLp::VarStatus ClpLp::_getRowStatus(int i) const {
|
| 360 | 373 |
switch (_prob->getColumnStatus(i)) {
|
| 361 | 374 |
case ClpSimplex::basic: |
| 362 | 375 |
return BASIC; |
| 363 | 376 |
case ClpSimplex::isFree: |
| 364 | 377 |
return FREE; |
| 365 | 378 |
case ClpSimplex::atUpperBound: |
| 366 | 379 |
return UPPER; |
| 367 | 380 |
case ClpSimplex::atLowerBound: |
| 368 | 381 |
return LOWER; |
| 369 | 382 |
case ClpSimplex::isFixed: |
| 370 | 383 |
return FIXED; |
| 371 | 384 |
case ClpSimplex::superBasic: |
| 372 | 385 |
return FREE; |
| 373 | 386 |
default: |
| 374 | 387 |
LEMON_ASSERT(false, "Wrong row status"); |
| 375 | 388 |
return VarStatus(); |
| 376 | 389 |
} |
| 377 | 390 |
} |
| 378 | 391 |
|
| 379 | 392 |
|
| 380 | 393 |
ClpLp::ProblemType ClpLp::_getPrimalType() const {
|
| 381 | 394 |
if (_prob->isProvenOptimal()) {
|
| 382 | 395 |
return OPTIMAL; |
| 383 | 396 |
} else if (_prob->isProvenPrimalInfeasible()) {
|
| 384 | 397 |
return INFEASIBLE; |
| 385 | 398 |
} else if (_prob->isProvenDualInfeasible()) {
|
| 386 | 399 |
return UNBOUNDED; |
| 387 | 400 |
} else {
|
| 388 | 401 |
return UNDEFINED; |
| 389 | 402 |
} |
| 390 | 403 |
} |
| 391 | 404 |
|
| 392 | 405 |
ClpLp::ProblemType ClpLp::_getDualType() const {
|
| 393 | 406 |
if (_prob->isProvenOptimal()) {
|
| 394 | 407 |
return OPTIMAL; |
| 395 | 408 |
} else if (_prob->isProvenDualInfeasible()) {
|
| 396 | 409 |
return INFEASIBLE; |
| 397 | 410 |
} else if (_prob->isProvenPrimalInfeasible()) {
|
| 398 | 411 |
return INFEASIBLE; |
| 399 | 412 |
} else {
|
| 400 | 413 |
return UNDEFINED; |
| 401 | 414 |
} |
| 402 | 415 |
} |
| 403 | 416 |
|
| 404 | 417 |
void ClpLp::_setSense(ClpLp::Sense sense) {
|
| 405 | 418 |
switch (sense) {
|
| 406 | 419 |
case MIN: |
| 407 | 420 |
_prob->setOptimizationDirection(1); |
| 408 | 421 |
break; |
| 409 | 422 |
case MAX: |
| 410 | 423 |
_prob->setOptimizationDirection(-1); |
| 411 | 424 |
break; |
| 412 | 425 |
} |
| 413 | 426 |
} |
| 414 | 427 |
|
| 415 | 428 |
ClpLp::Sense ClpLp::_getSense() const {
|
| 416 | 429 |
double dir = _prob->optimizationDirection(); |
| 417 | 430 |
if (dir > 0.0) {
|
| 418 | 431 |
return MIN; |
| 419 | 432 |
} else {
|
| 420 | 433 |
return MAX; |
| 421 | 434 |
} |
| 422 | 435 |
} |
| 423 | 436 |
|
| 424 | 437 |
void ClpLp::_clear() {
|
| 425 | 438 |
delete _prob; |
| 426 | 439 |
_prob = new ClpSimplex(); |
| 427 | 440 |
rows.clear(); |
| 428 | 441 |
cols.clear(); |
| 429 | 442 |
_col_names_ref.clear(); |
| 430 | 443 |
_clear_temporals(); |
| 431 | 444 |
} |
| 432 | 445 |
|
| 433 |
void ClpLp::messageLevel(MessageLevel m) {
|
|
| 434 |
_prob->setLogLevel(static_cast<int>(m)); |
|
| 446 |
void ClpLp::_messageLevel(MessageLevel level) {
|
|
| 447 |
switch (level) {
|
|
| 448 |
case MESSAGE_NOTHING: |
|
| 449 |
_prob->setLogLevel(0); |
|
| 450 |
break; |
|
| 451 |
case MESSAGE_ERROR: |
|
| 452 |
_prob->setLogLevel(1); |
|
| 453 |
break; |
|
| 454 |
case MESSAGE_WARNING: |
|
| 455 |
_prob->setLogLevel(2); |
|
| 456 |
break; |
|
| 457 |
case MESSAGE_NORMAL: |
|
| 458 |
_prob->setLogLevel(3); |
|
| 459 |
break; |
|
| 460 |
case MESSAGE_VERBOSE: |
|
| 461 |
_prob->setLogLevel(4); |
|
| 462 |
break; |
|
| 463 |
} |
|
| 435 | 464 |
} |
| 436 | 465 |
|
| 437 | 466 |
} //END OF NAMESPACE LEMON |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2008 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_CLP_H |
| 20 | 20 |
#define LEMON_CLP_H |
| 21 | 21 |
|
| 22 | 22 |
///\file |
| 23 | 23 |
///\brief Header of the LEMON-CLP lp solver interface. |
| 24 | 24 |
|
| 25 | 25 |
#include <vector> |
| 26 | 26 |
#include <string> |
| 27 | 27 |
|
| 28 | 28 |
#include <lemon/lp_base.h> |
| 29 | 29 |
|
| 30 | 30 |
class ClpSimplex; |
| 31 | 31 |
|
| 32 | 32 |
namespace lemon {
|
| 33 | 33 |
|
| 34 | 34 |
/// \ingroup lp_group |
| 35 | 35 |
/// |
| 36 | 36 |
/// \brief Interface for the CLP solver |
| 37 | 37 |
/// |
| 38 | 38 |
/// This class implements an interface for the Clp LP solver. The |
| 39 | 39 |
/// Clp library is an object oriented lp solver library developed at |
| 40 | 40 |
/// the IBM. The CLP is part of the COIN-OR package and it can be |
| 41 | 41 |
/// used with Common Public License. |
| 42 | 42 |
class ClpLp : public LpSolver {
|
| 43 | 43 |
protected: |
| 44 | 44 |
|
| 45 | 45 |
ClpSimplex* _prob; |
| 46 | 46 |
|
| 47 | 47 |
std::map<std::string, int> _col_names_ref; |
| 48 | 48 |
std::map<std::string, int> _row_names_ref; |
| 49 | 49 |
|
| 50 | 50 |
public: |
| 51 | 51 |
|
| 52 | 52 |
/// \e |
| 53 | 53 |
ClpLp(); |
| 54 | 54 |
/// \e |
| 55 | 55 |
ClpLp(const ClpLp&); |
| 56 | 56 |
/// \e |
| 57 | 57 |
~ClpLp(); |
| 58 | 58 |
|
| 59 |
/// \e |
|
| 60 |
virtual ClpLp* newSolver() const; |
|
| 61 |
/// \e |
|
| 62 |
virtual ClpLp* cloneSolver() const; |
|
| 63 |
|
|
| 59 | 64 |
protected: |
| 60 | 65 |
|
| 61 | 66 |
mutable double* _primal_ray; |
| 62 | 67 |
mutable double* _dual_ray; |
| 63 | 68 |
|
| 64 | 69 |
void _init_temporals(); |
| 65 | 70 |
void _clear_temporals(); |
| 66 | 71 |
|
| 67 | 72 |
protected: |
| 68 | 73 |
|
| 69 |
virtual ClpLp* _newSolver() const; |
|
| 70 |
virtual ClpLp* _cloneSolver() const; |
|
| 71 |
|
|
| 72 | 74 |
virtual const char* _solverName() const; |
| 73 | 75 |
|
| 74 | 76 |
virtual int _addCol(); |
| 75 | 77 |
virtual int _addRow(); |
| 78 |
virtual int _addRow(Value l, ExprIterator b, ExprIterator e, Value u); |
|
| 76 | 79 |
|
| 77 | 80 |
virtual void _eraseCol(int i); |
| 78 | 81 |
virtual void _eraseRow(int i); |
| 79 | 82 |
|
| 80 | 83 |
virtual void _eraseColId(int i); |
| 81 | 84 |
virtual void _eraseRowId(int i); |
| 82 | 85 |
|
| 83 | 86 |
virtual void _getColName(int col, std::string& name) const; |
| 84 | 87 |
virtual void _setColName(int col, const std::string& name); |
| 85 | 88 |
virtual int _colByName(const std::string& name) const; |
| 86 | 89 |
|
| 87 | 90 |
virtual void _getRowName(int row, std::string& name) const; |
| 88 | 91 |
virtual void _setRowName(int row, const std::string& name); |
| 89 | 92 |
virtual int _rowByName(const std::string& name) const; |
| 90 | 93 |
|
| 91 | 94 |
virtual void _setRowCoeffs(int i, ExprIterator b, ExprIterator e); |
| 92 | 95 |
virtual void _getRowCoeffs(int i, InsertIterator b) const; |
| 93 | 96 |
|
| 94 | 97 |
virtual void _setColCoeffs(int i, ExprIterator b, ExprIterator e); |
| 95 | 98 |
virtual void _getColCoeffs(int i, InsertIterator b) const; |
| 96 | 99 |
|
| 97 | 100 |
virtual void _setCoeff(int row, int col, Value value); |
| 98 | 101 |
virtual Value _getCoeff(int row, int col) const; |
| 99 | 102 |
|
| 100 | 103 |
virtual void _setColLowerBound(int i, Value value); |
| 101 | 104 |
virtual Value _getColLowerBound(int i) const; |
| 102 | 105 |
virtual void _setColUpperBound(int i, Value value); |
| 103 | 106 |
virtual Value _getColUpperBound(int i) const; |
| 104 | 107 |
|
| 105 | 108 |
virtual void _setRowLowerBound(int i, Value value); |
| 106 | 109 |
virtual Value _getRowLowerBound(int i) const; |
| 107 | 110 |
virtual void _setRowUpperBound(int i, Value value); |
| 108 | 111 |
virtual Value _getRowUpperBound(int i) const; |
| 109 | 112 |
|
| 110 | 113 |
virtual void _setObjCoeffs(ExprIterator, ExprIterator); |
| 111 | 114 |
virtual void _getObjCoeffs(InsertIterator) const; |
| 112 | 115 |
|
| 113 | 116 |
virtual void _setObjCoeff(int i, Value obj_coef); |
| 114 | 117 |
virtual Value _getObjCoeff(int i) const; |
| 115 | 118 |
|
| 116 | 119 |
virtual void _setSense(Sense sense); |
| 117 | 120 |
virtual Sense _getSense() const; |
| 118 | 121 |
|
| 119 | 122 |
virtual SolveExitStatus _solve(); |
| 120 | 123 |
|
| 121 | 124 |
virtual Value _getPrimal(int i) const; |
| 122 | 125 |
virtual Value _getDual(int i) const; |
| 123 | 126 |
|
| 124 | 127 |
virtual Value _getPrimalValue() const; |
| 125 | 128 |
|
| 126 | 129 |
virtual Value _getPrimalRay(int i) const; |
| 127 | 130 |
virtual Value _getDualRay(int i) const; |
| 128 | 131 |
|
| 129 | 132 |
virtual VarStatus _getColStatus(int i) const; |
| 130 | 133 |
virtual VarStatus _getRowStatus(int i) const; |
| 131 | 134 |
|
| 132 | 135 |
virtual ProblemType _getPrimalType() const; |
| 133 | 136 |
virtual ProblemType _getDualType() const; |
| 134 | 137 |
|
| 135 | 138 |
virtual void _clear(); |
| 136 | 139 |
|
| 140 |
virtual void _messageLevel(MessageLevel); |
|
| 141 |
|
|
| 137 | 142 |
public: |
| 138 | 143 |
|
| 139 | 144 |
///Solves LP with primal simplex method. |
| 140 | 145 |
SolveExitStatus solvePrimal(); |
| 141 | 146 |
|
| 142 | 147 |
///Solves LP with dual simplex method. |
| 143 | 148 |
SolveExitStatus solveDual(); |
| 144 | 149 |
|
| 145 | 150 |
///Solves LP with barrier method. |
| 146 | 151 |
SolveExitStatus solveBarrier(); |
| 147 | 152 |
|
| 148 | 153 |
///Returns the constraint identifier understood by CLP. |
| 149 | 154 |
int clpRow(Row r) const { return rows(id(r)); }
|
| 150 | 155 |
|
| 151 | 156 |
///Returns the variable identifier understood by CLP. |
| 152 | 157 |
int clpCol(Col c) const { return cols(id(c)); }
|
| 153 | 158 |
|
| 154 |
///Enum for \c messageLevel() parameter |
|
| 155 |
enum MessageLevel {
|
|
| 156 |
/// no output (default value) |
|
| 157 |
MESSAGE_NO_OUTPUT = 0, |
|
| 158 |
/// print final solution |
|
| 159 |
MESSAGE_FINAL_SOLUTION = 1, |
|
| 160 |
/// print factorization |
|
| 161 |
MESSAGE_FACTORIZATION = 2, |
|
| 162 |
/// normal output |
|
| 163 |
MESSAGE_NORMAL_OUTPUT = 3, |
|
| 164 |
/// verbose output |
|
| 165 |
MESSAGE_VERBOSE_OUTPUT = 4 |
|
| 166 |
}; |
|
| 167 |
///Set the verbosity of the messages |
|
| 168 |
|
|
| 169 |
///Set the verbosity of the messages |
|
| 170 |
/// |
|
| 171 |
///\param m is the level of the messages output by the solver routines. |
|
| 172 |
void messageLevel(MessageLevel m); |
|
| 173 |
|
|
| 174 | 159 |
}; |
| 175 | 160 |
|
| 176 | 161 |
} //END OF NAMESPACE LEMON |
| 177 | 162 |
|
| 178 | 163 |
#endif //LEMON_CLP_H |
| 179 | 164 |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 |
#ifndef LEMON_CONCEPT_DIGRAPH_H |
|
| 20 |
#define LEMON_CONCEPT_DIGRAPH_H |
|
| 19 |
#ifndef LEMON_CONCEPTS_DIGRAPH_H |
|
| 20 |
#define LEMON_CONCEPTS_DIGRAPH_H |
|
| 21 | 21 |
|
| 22 | 22 |
///\ingroup graph_concepts |
| 23 | 23 |
///\file |
| 24 | 24 |
///\brief The concept of directed graphs. |
| 25 | 25 |
|
| 26 | 26 |
#include <lemon/core.h> |
| 27 | 27 |
#include <lemon/concepts/maps.h> |
| 28 | 28 |
#include <lemon/concept_check.h> |
| 29 | 29 |
#include <lemon/concepts/graph_components.h> |
| 30 | 30 |
|
| 31 | 31 |
namespace lemon {
|
| 32 | 32 |
namespace concepts {
|
| 33 | 33 |
|
| 34 | 34 |
/// \ingroup graph_concepts |
| 35 | 35 |
/// |
| 36 | 36 |
/// \brief Class describing the concept of directed graphs. |
| 37 | 37 |
/// |
| 38 |
/// This class describes the \ref concept "concept" of the |
|
| 39 |
/// immutable directed digraphs. |
|
| 38 |
/// This class describes the common interface of all directed |
|
| 39 |
/// graphs (digraphs). |
|
| 40 | 40 |
/// |
| 41 |
/// Note that actual digraph implementation like @ref ListDigraph or |
|
| 42 |
/// @ref SmartDigraph may have several additional functionality. |
|
| 41 |
/// Like all concept classes, it only provides an interface |
|
| 42 |
/// without any sensible implementation. So any general algorithm for |
|
| 43 |
/// directed graphs should compile with this class, but it will not |
|
| 44 |
/// run properly, of course. |
|
| 45 |
/// An actual digraph implementation like \ref ListDigraph or |
|
| 46 |
/// \ref SmartDigraph may have additional functionality. |
|
| 43 | 47 |
/// |
| 44 |
/// \sa |
|
| 48 |
/// \sa Graph |
|
| 45 | 49 |
class Digraph {
|
| 46 | 50 |
private: |
| 47 |
/// |
|
| 51 |
/// Diraphs are \e not copy constructible. Use DigraphCopy instead. |
|
| 52 |
Digraph(const Digraph &) {}
|
|
| 53 |
/// \brief Assignment of a digraph to another one is \e not allowed. |
|
| 54 |
/// Use DigraphCopy instead. |
|
| 55 |
void operator=(const Digraph &) {}
|
|
| 48 | 56 |
|
| 49 |
///Digraphs are \e not copy constructible. Use DigraphCopy() instead. |
|
| 50 |
/// |
|
| 51 |
Digraph(const Digraph &) {};
|
|
| 52 |
///\brief Assignment of \ref Digraph "Digraph"s to another ones are |
|
| 53 |
|
|
| 57 |
public: |
|
| 58 |
/// Default constructor. |
|
| 59 |
Digraph() { }
|
|
| 54 | 60 |
|
| 55 |
///Assignment of \ref Digraph "Digraph"s to another ones are |
|
| 56 |
///\e not allowed. Use DigraphCopy() instead. |
|
| 57 |
|
|
| 58 |
void operator=(const Digraph &) {}
|
|
| 59 |
public: |
|
| 60 |
///\e |
|
| 61 |
|
|
| 62 |
/// Defalult constructor. |
|
| 63 |
|
|
| 64 |
/// Defalult constructor. |
|
| 65 |
/// |
|
| 66 |
Digraph() { }
|
|
| 67 |
/// |
|
| 61 |
/// The node type of the digraph |
|
| 68 | 62 |
|
| 69 | 63 |
/// This class identifies a node of the digraph. It also serves |
| 70 | 64 |
/// as a base class of the node iterators, |
| 71 |
/// thus they |
|
| 65 |
/// thus they convert to this type. |
|
| 72 | 66 |
class Node {
|
| 73 | 67 |
public: |
| 74 | 68 |
/// Default constructor |
| 75 | 69 |
|
| 76 |
/// @warning The default constructor sets the iterator |
|
| 77 |
/// to an undefined value. |
|
| 70 |
/// Default constructor. |
|
| 71 |
/// \warning It sets the object to an undefined value. |
|
| 78 | 72 |
Node() { }
|
| 79 | 73 |
/// Copy constructor. |
| 80 | 74 |
|
| 81 | 75 |
/// Copy constructor. |
| 82 | 76 |
/// |
| 83 | 77 |
Node(const Node&) { }
|
| 84 | 78 |
|
| 85 |
/// Invalid constructor \& conversion. |
|
| 79 |
/// %Invalid constructor \& conversion. |
|
| 86 | 80 |
|
| 87 |
/// |
|
| 81 |
/// Initializes the object to be invalid. |
|
| 88 | 82 |
/// \sa Invalid for more details. |
| 89 | 83 |
Node(Invalid) { }
|
| 90 | 84 |
/// Equality operator |
| 91 | 85 |
|
| 86 |
/// Equality operator. |
|
| 87 |
/// |
|
| 92 | 88 |
/// Two iterators are equal if and only if they point to the |
| 93 |
/// same object or both are |
|
| 89 |
/// same object or both are \c INVALID. |
|
| 94 | 90 |
bool operator==(Node) const { return true; }
|
| 95 | 91 |
|
| 96 | 92 |
/// Inequality operator |
| 97 | 93 |
|
| 98 |
/// \sa operator==(Node n) |
|
| 99 |
/// |
|
| 94 |
/// Inequality operator. |
|
| 100 | 95 |
bool operator!=(Node) const { return true; }
|
| 101 | 96 |
|
| 102 | 97 |
/// Artificial ordering operator. |
| 103 | 98 |
|
| 104 |
/// To allow the use of digraph descriptors as key type in std::map or |
|
| 105 |
/// similar associative container we require this. |
|
| 99 |
/// Artificial ordering operator. |
|
| 106 | 100 |
/// |
| 107 |
/// \note This operator only have to define some strict ordering of |
|
| 108 |
/// the items; this order has nothing to do with the iteration |
|
| 109 |
/// ordering of |
|
| 101 |
/// \note This operator only has to define some strict ordering of |
|
| 102 |
/// the nodes; this order has nothing to do with the iteration |
|
| 103 |
/// ordering of the nodes. |
|
| 110 | 104 |
bool operator<(Node) const { return false; }
|
| 111 |
|
|
| 112 | 105 |
}; |
| 113 | 106 |
|
| 114 |
/// |
|
| 107 |
/// Iterator class for the nodes. |
|
| 115 | 108 |
|
| 116 |
/// This iterator goes through each node. |
|
| 109 |
/// This iterator goes through each node of the digraph. |
|
| 117 | 110 |
/// Its usage is quite simple, for example you can count the number |
| 118 |
/// of nodes in digraph \c g of type \c Digraph like this: |
|
| 111 |
/// of nodes in a digraph \c g of type \c %Digraph like this: |
|
| 119 | 112 |
///\code |
| 120 | 113 |
/// int count=0; |
| 121 | 114 |
/// for (Digraph::NodeIt n(g); n!=INVALID; ++n) ++count; |
| 122 | 115 |
///\endcode |
| 123 | 116 |
class NodeIt : public Node {
|
| 124 | 117 |
public: |
| 125 | 118 |
/// Default constructor |
| 126 | 119 |
|
| 127 |
/// @warning The default constructor sets the iterator |
|
| 128 |
/// to an undefined value. |
|
| 120 |
/// Default constructor. |
|
| 121 |
/// \warning It sets the iterator to an undefined value. |
|
| 129 | 122 |
NodeIt() { }
|
| 130 | 123 |
/// Copy constructor. |
| 131 | 124 |
|
| 132 | 125 |
/// Copy constructor. |
| 133 | 126 |
/// |
| 134 | 127 |
NodeIt(const NodeIt& n) : Node(n) { }
|
| 135 |
/// Invalid constructor \& conversion. |
|
| 128 |
/// %Invalid constructor \& conversion. |
|
| 136 | 129 |
|
| 137 |
/// |
|
| 130 |
/// Initializes the iterator to be invalid. |
|
| 138 | 131 |
/// \sa Invalid for more details. |
| 139 | 132 |
NodeIt(Invalid) { }
|
| 140 | 133 |
/// Sets the iterator to the first node. |
| 141 | 134 |
|
| 142 |
/// Sets the iterator to the first node of |
|
| 135 |
/// Sets the iterator to the first node of the given digraph. |
|
| 143 | 136 |
/// |
| 144 |
NodeIt(const Digraph&) { }
|
|
| 145 |
/// Node -> NodeIt conversion. |
|
| 137 |
explicit NodeIt(const Digraph&) { }
|
|
| 138 |
/// Sets the iterator to the given node. |
|
| 146 | 139 |
|
| 147 |
/// Sets the iterator to the node of \c the digraph pointed by |
|
| 148 |
/// the trivial iterator. |
|
| 149 |
/// This feature necessitates that each time we |
|
| 150 |
/// iterate the arc-set, the iteration order is the same. |
|
| 140 |
/// Sets the iterator to the given node of the given digraph. |
|
| 141 |
/// |
|
| 151 | 142 |
NodeIt(const Digraph&, const Node&) { }
|
| 152 | 143 |
/// Next node. |
| 153 | 144 |
|
| 154 | 145 |
/// Assign the iterator to the next node. |
| 155 | 146 |
/// |
| 156 | 147 |
NodeIt& operator++() { return *this; }
|
| 157 | 148 |
}; |
| 158 | 149 |
|
| 159 | 150 |
|
| 160 |
/// |
|
| 151 |
/// The arc type of the digraph |
|
| 161 | 152 |
|
| 162 | 153 |
/// This class identifies an arc of the digraph. It also serves |
| 163 | 154 |
/// as a base class of the arc iterators, |
| 164 | 155 |
/// thus they will convert to this type. |
| 165 | 156 |
class Arc {
|
| 166 | 157 |
public: |
| 167 | 158 |
/// Default constructor |
| 168 | 159 |
|
| 169 |
/// @warning The default constructor sets the iterator |
|
| 170 |
/// to an undefined value. |
|
| 160 |
/// Default constructor. |
|
| 161 |
/// \warning It sets the object to an undefined value. |
|
| 171 | 162 |
Arc() { }
|
| 172 | 163 |
/// Copy constructor. |
| 173 | 164 |
|
| 174 | 165 |
/// Copy constructor. |
| 175 | 166 |
/// |
| 176 | 167 |
Arc(const Arc&) { }
|
| 177 |
/// |
|
| 168 |
/// %Invalid constructor \& conversion. |
|
| 178 | 169 |
|
| 179 |
/// Initialize the iterator to be invalid. |
|
| 180 |
/// |
|
| 170 |
/// Initializes the object to be invalid. |
|
| 171 |
/// \sa Invalid for more details. |
|
| 181 | 172 |
Arc(Invalid) { }
|
| 182 | 173 |
/// Equality operator |
| 183 | 174 |
|
| 175 |
/// Equality operator. |
|
| 176 |
/// |
|
| 184 | 177 |
/// Two iterators are equal if and only if they point to the |
| 185 |
/// same object or both are |
|
| 178 |
/// same object or both are \c INVALID. |
|
| 186 | 179 |
bool operator==(Arc) const { return true; }
|
| 187 | 180 |
/// Inequality operator |
| 188 | 181 |
|
| 189 |
/// \sa operator==(Arc n) |
|
| 190 |
/// |
|
| 182 |
/// Inequality operator. |
|
| 191 | 183 |
bool operator!=(Arc) const { return true; }
|
| 192 | 184 |
|
| 193 | 185 |
/// Artificial ordering operator. |
| 194 | 186 |
|
| 195 |
/// To allow the use of digraph descriptors as key type in std::map or |
|
| 196 |
/// similar associative container we require this. |
|
| 187 |
/// Artificial ordering operator. |
|
| 197 | 188 |
/// |
| 198 |
/// \note This operator only have to define some strict ordering of |
|
| 199 |
/// the items; this order has nothing to do with the iteration |
|
| 200 |
/// ordering of |
|
| 189 |
/// \note This operator only has to define some strict ordering of |
|
| 190 |
/// the arcs; this order has nothing to do with the iteration |
|
| 191 |
/// ordering of the arcs. |
|
| 201 | 192 |
bool operator<(Arc) const { return false; }
|
| 202 | 193 |
}; |
| 203 | 194 |
|
| 204 |
/// |
|
| 195 |
/// Iterator class for the outgoing arcs of a node. |
|
| 205 | 196 |
|
| 206 | 197 |
/// This iterator goes trough the \e outgoing arcs of a certain node |
| 207 | 198 |
/// of a digraph. |
| 208 | 199 |
/// Its usage is quite simple, for example you can count the number |
| 209 | 200 |
/// of outgoing arcs of a node \c n |
| 210 |
/// in digraph \c g of type \c Digraph as follows. |
|
| 201 |
/// in a digraph \c g of type \c %Digraph as follows. |
|
| 211 | 202 |
///\code |
| 212 | 203 |
/// int count=0; |
| 213 |
/// for (Digraph::OutArcIt |
|
| 204 |
/// for (Digraph::OutArcIt a(g, n); a!=INVALID; ++a) ++count; |
|
| 214 | 205 |
///\endcode |
| 215 |
|
|
| 216 | 206 |
class OutArcIt : public Arc {
|
| 217 | 207 |
public: |
| 218 | 208 |
/// Default constructor |
| 219 | 209 |
|
| 220 |
/// @warning The default constructor sets the iterator |
|
| 221 |
/// to an undefined value. |
|
| 210 |
/// Default constructor. |
|
| 211 |
/// \warning It sets the iterator to an undefined value. |
|
| 222 | 212 |
OutArcIt() { }
|
| 223 | 213 |
/// Copy constructor. |
| 224 | 214 |
|
| 225 | 215 |
/// Copy constructor. |
| 226 | 216 |
/// |
| 227 | 217 |
OutArcIt(const OutArcIt& e) : Arc(e) { }
|
| 228 |
/// |
|
| 218 |
/// %Invalid constructor \& conversion. |
|
| 229 | 219 |
|
| 230 |
/// |
|
| 220 |
/// Initializes the iterator to be invalid. |
|
| 221 |
/// \sa Invalid for more details. |
|
| 222 |
OutArcIt(Invalid) { }
|
|
| 223 |
/// Sets the iterator to the first outgoing arc. |
|
| 224 |
|
|
| 225 |
/// Sets the iterator to the first outgoing arc of the given node. |
|
| 231 | 226 |
/// |
| 232 |
OutArcIt(Invalid) { }
|
|
| 233 |
/// This constructor sets the iterator to the first outgoing arc. |
|
| 227 |
OutArcIt(const Digraph&, const Node&) { }
|
|
| 228 |
/// Sets the iterator to the given arc. |
|
| 234 | 229 |
|
| 235 |
/// This constructor sets the iterator to the first outgoing arc of |
|
| 236 |
/// the node. |
|
| 237 |
OutArcIt(const Digraph&, const Node&) { }
|
|
| 238 |
/// Arc -> OutArcIt conversion |
|
| 239 |
|
|
| 240 |
/// Sets the iterator to the value of the trivial iterator. |
|
| 241 |
/// This feature necessitates that each time we |
|
| 242 |
/// iterate the arc-set, the iteration order is the same. |
|
| 230 |
/// Sets the iterator to the given arc of the given digraph. |
|
| 231 |
/// |
|
| 243 | 232 |
OutArcIt(const Digraph&, const Arc&) { }
|
| 244 |
///Next outgoing arc |
|
| 233 |
/// Next outgoing arc |
|
| 245 | 234 |
|
| 246 | 235 |
/// Assign the iterator to the next |
| 247 | 236 |
/// outgoing arc of the corresponding node. |
| 248 | 237 |
OutArcIt& operator++() { return *this; }
|
| 249 | 238 |
}; |
| 250 | 239 |
|
| 251 |
/// |
|
| 240 |
/// Iterator class for the incoming arcs of a node. |
|
| 252 | 241 |
|
| 253 | 242 |
/// This iterator goes trough the \e incoming arcs of a certain node |
| 254 | 243 |
/// of a digraph. |
| 255 | 244 |
/// Its usage is quite simple, for example you can count the number |
| 256 |
/// of outgoing arcs of a node \c n |
|
| 257 |
/// in digraph \c g of type \c Digraph as follows. |
|
| 245 |
/// of incoming arcs of a node \c n |
|
| 246 |
/// in a digraph \c g of type \c %Digraph as follows. |
|
| 258 | 247 |
///\code |
| 259 | 248 |
/// int count=0; |
| 260 |
/// for(Digraph::InArcIt |
|
| 249 |
/// for(Digraph::InArcIt a(g, n); a!=INVALID; ++a) ++count; |
|
| 261 | 250 |
///\endcode |
| 262 |
|
|
| 263 | 251 |
class InArcIt : public Arc {
|
| 264 | 252 |
public: |
| 265 | 253 |
/// Default constructor |
| 266 | 254 |
|
| 267 |
/// @warning The default constructor sets the iterator |
|
| 268 |
/// to an undefined value. |
|
| 255 |
/// Default constructor. |
|
| 256 |
/// \warning It sets the iterator to an undefined value. |
|
| 269 | 257 |
InArcIt() { }
|
| 270 | 258 |
/// Copy constructor. |
| 271 | 259 |
|
| 272 | 260 |
/// Copy constructor. |
| 273 | 261 |
/// |
| 274 | 262 |
InArcIt(const InArcIt& e) : Arc(e) { }
|
| 275 |
/// |
|
| 263 |
/// %Invalid constructor \& conversion. |
|
| 276 | 264 |
|
| 277 |
/// |
|
| 265 |
/// Initializes the iterator to be invalid. |
|
| 266 |
/// \sa Invalid for more details. |
|
| 267 |
InArcIt(Invalid) { }
|
|
| 268 |
/// Sets the iterator to the first incoming arc. |
|
| 269 |
|
|
| 270 |
/// Sets the iterator to the first incoming arc of the given node. |
|
| 278 | 271 |
/// |
| 279 |
InArcIt(Invalid) { }
|
|
| 280 |
/// This constructor sets the iterator to first incoming arc. |
|
| 272 |
InArcIt(const Digraph&, const Node&) { }
|
|
| 273 |
/// Sets the iterator to the given arc. |
|
| 281 | 274 |
|
| 282 |
/// This constructor set the iterator to the first incoming arc of |
|
| 283 |
/// the node. |
|
| 284 |
InArcIt(const Digraph&, const Node&) { }
|
|
| 285 |
/// Arc -> InArcIt conversion |
|
| 286 |
|
|
| 287 |
/// Sets the iterator to the value of the trivial iterator \c e. |
|
| 288 |
/// This feature necessitates that each time we |
|
| 289 |
/// iterate the arc-set, the iteration order is the same. |
|
| 275 |
/// Sets the iterator to the given arc of the given digraph. |
|
| 276 |
/// |
|
| 290 | 277 |
InArcIt(const Digraph&, const Arc&) { }
|
| 291 | 278 |
/// Next incoming arc |
| 292 | 279 |
|
| 293 |
/// Assign the iterator to the next inarc of the corresponding node. |
|
| 294 |
/// |
|
| 280 |
/// Assign the iterator to the next |
|
| 281 |
/// incoming arc of the corresponding node. |
|
| 295 | 282 |
InArcIt& operator++() { return *this; }
|
| 296 | 283 |
}; |
| 297 |
/// This iterator goes through each arc. |
|
| 298 | 284 |
|
| 299 |
/// |
|
| 285 |
/// Iterator class for the arcs. |
|
| 286 |
|
|
| 287 |
/// This iterator goes through each arc of the digraph. |
|
| 300 | 288 |
/// Its usage is quite simple, for example you can count the number |
| 301 |
/// of arcs in a digraph \c g of type \c Digraph as follows: |
|
| 289 |
/// of arcs in a digraph \c g of type \c %Digraph as follows: |
|
| 302 | 290 |
///\code |
| 303 | 291 |
/// int count=0; |
| 304 |
/// for(Digraph::ArcIt |
|
| 292 |
/// for(Digraph::ArcIt a(g); a!=INVALID; ++a) ++count; |
|
| 305 | 293 |
///\endcode |
| 306 | 294 |
class ArcIt : public Arc {
|
| 307 | 295 |
public: |
| 308 | 296 |
/// Default constructor |
| 309 | 297 |
|
| 310 |
/// @warning The default constructor sets the iterator |
|
| 311 |
/// to an undefined value. |
|
| 298 |
/// Default constructor. |
|
| 299 |
/// \warning It sets the iterator to an undefined value. |
|
| 312 | 300 |
ArcIt() { }
|
| 313 | 301 |
/// Copy constructor. |
| 314 | 302 |
|
| 315 | 303 |
/// Copy constructor. |
| 316 | 304 |
/// |
| 317 | 305 |
ArcIt(const ArcIt& e) : Arc(e) { }
|
| 318 |
/// |
|
| 306 |
/// %Invalid constructor \& conversion. |
|
| 319 | 307 |
|
| 320 |
/// |
|
| 308 |
/// Initializes the iterator to be invalid. |
|
| 309 |
/// \sa Invalid for more details. |
|
| 310 |
ArcIt(Invalid) { }
|
|
| 311 |
/// Sets the iterator to the first arc. |
|
| 312 |
|
|
| 313 |
/// Sets the iterator to the first arc of the given digraph. |
|
| 321 | 314 |
/// |
| 322 |
ArcIt(Invalid) { }
|
|
| 323 |
/// This constructor sets the iterator to the first arc. |
|
| 315 |
explicit ArcIt(const Digraph& g) { ignore_unused_variable_warning(g); }
|
|
| 316 |
/// Sets the iterator to the given arc. |
|
| 324 | 317 |
|
| 325 |
/// This constructor sets the iterator to the first arc of \c g. |
|
| 326 |
///@param g the digraph |
|
| 327 |
ArcIt(const Digraph& g) { ignore_unused_variable_warning(g); }
|
|
| 328 |
/// Arc -> ArcIt conversion |
|
| 329 |
|
|
| 330 |
/// Sets the iterator to the value of the trivial iterator \c e. |
|
| 331 |
/// This feature necessitates that each time we |
|
| 332 |
/// iterate the arc-set, the iteration order is the same. |
|
| 318 |
/// Sets the iterator to the given arc of the given digraph. |
|
| 319 |
/// |
|
| 333 | 320 |
ArcIt(const Digraph&, const Arc&) { }
|
| 334 |
///Next arc |
|
| 321 |
/// Next arc |
|
| 335 | 322 |
|
| 336 | 323 |
/// Assign the iterator to the next arc. |
| 324 |
/// |
|
| 337 | 325 |
ArcIt& operator++() { return *this; }
|
| 338 | 326 |
}; |
| 339 |
///Gives back the target node of an arc. |
|
| 340 | 327 |
|
| 341 |
/// |
|
| 328 |
/// \brief The source node of the arc. |
|
| 342 | 329 |
/// |
| 343 |
Node target(Arc) const { return INVALID; }
|
|
| 344 |
///Gives back the source node of an arc. |
|
| 345 |
|
|
| 346 |
///Gives back the source node of an arc. |
|
| 347 |
/// |
|
| 330 |
/// Returns the source node of the given arc. |
|
| 348 | 331 |
Node source(Arc) const { return INVALID; }
|
| 349 | 332 |
|
| 350 |
/// \brief |
|
| 333 |
/// \brief The target node of the arc. |
|
| 334 |
/// |
|
| 335 |
/// Returns the target node of the given arc. |
|
| 336 |
Node target(Arc) const { return INVALID; }
|
|
| 337 |
|
|
| 338 |
/// \brief The ID of the node. |
|
| 339 |
/// |
|
| 340 |
/// Returns the ID of the given node. |
|
| 351 | 341 |
int id(Node) const { return -1; }
|
| 352 | 342 |
|
| 353 |
/// \brief |
|
| 343 |
/// \brief The ID of the arc. |
|
| 344 |
/// |
|
| 345 |
/// Returns the ID of the given arc. |
|
| 354 | 346 |
int id(Arc) const { return -1; }
|
| 355 | 347 |
|
| 356 |
/// \brief |
|
| 348 |
/// \brief The node with the given ID. |
|
| 357 | 349 |
/// |
| 358 |
/// |
|
| 350 |
/// Returns the node with the given ID. |
|
| 351 |
/// \pre The argument should be a valid node ID in the digraph. |
|
| 359 | 352 |
Node nodeFromId(int) const { return INVALID; }
|
| 360 | 353 |
|
| 361 |
/// \brief |
|
| 354 |
/// \brief The arc with the given ID. |
|
| 362 | 355 |
/// |
| 363 |
/// |
|
| 356 |
/// Returns the arc with the given ID. |
|
| 357 |
/// \pre The argument should be a valid arc ID in the digraph. |
|
| 364 | 358 |
Arc arcFromId(int) const { return INVALID; }
|
| 365 | 359 |
|
| 366 |
/// \brief |
|
| 360 |
/// \brief An upper bound on the node IDs. |
|
| 361 |
/// |
|
| 362 |
/// Returns an upper bound on the node IDs. |
|
| 367 | 363 |
int maxNodeId() const { return -1; }
|
| 368 | 364 |
|
| 369 |
/// \brief |
|
| 365 |
/// \brief An upper bound on the arc IDs. |
|
| 366 |
/// |
|
| 367 |
/// Returns an upper bound on the arc IDs. |
|
| 370 | 368 |
int maxArcId() const { return -1; }
|
| 371 | 369 |
|
| 372 | 370 |
void first(Node&) const {}
|
| 373 | 371 |
void next(Node&) const {}
|
| 374 | 372 |
|
| 375 | 373 |
void first(Arc&) const {}
|
| 376 | 374 |
void next(Arc&) const {}
|
| 377 | 375 |
|
| 378 | 376 |
|
| 379 | 377 |
void firstIn(Arc&, const Node&) const {}
|
| 380 | 378 |
void nextIn(Arc&) const {}
|
| 381 | 379 |
|
| 382 | 380 |
void firstOut(Arc&, const Node&) const {}
|
| 383 | 381 |
void nextOut(Arc&) const {}
|
| 384 | 382 |
|
| 385 | 383 |
// The second parameter is dummy. |
| 386 | 384 |
Node fromId(int, Node) const { return INVALID; }
|
| 387 | 385 |
// The second parameter is dummy. |
| 388 | 386 |
Arc fromId(int, Arc) const { return INVALID; }
|
| 389 | 387 |
|
| 390 | 388 |
// Dummy parameter. |
| 391 | 389 |
int maxId(Node) const { return -1; }
|
| 392 | 390 |
// Dummy parameter. |
| 393 | 391 |
int maxId(Arc) const { return -1; }
|
| 394 | 392 |
|
| 393 |
/// \brief The opposite node on the arc. |
|
| 394 |
/// |
|
| 395 |
/// Returns the opposite node on the given arc. |
|
| 396 |
Node oppositeNode(Node, Arc) const { return INVALID; }
|
|
| 397 |
|
|
| 395 | 398 |
/// \brief The base node of the iterator. |
| 396 | 399 |
/// |
| 397 |
/// Gives back the base node of the iterator. |
|
| 398 |
/// It is always the target of the pointed arc. |
|
| 399 |
|
|
| 400 |
/// Returns the base node of the given outgoing arc iterator |
|
| 401 |
/// (i.e. the source node of the corresponding arc). |
|
| 402 |
Node baseNode(OutArcIt) const { return INVALID; }
|
|
| 400 | 403 |
|
| 401 | 404 |
/// \brief The running node of the iterator. |
| 402 | 405 |
/// |
| 403 |
/// Gives back the running node of the iterator. |
|
| 404 |
/// It is always the source of the pointed arc. |
|
| 405 |
|
|
| 406 |
/// Returns the running node of the given outgoing arc iterator |
|
| 407 |
/// (i.e. the target node of the corresponding arc). |
|
| 408 |
Node runningNode(OutArcIt) const { return INVALID; }
|
|
| 406 | 409 |
|
| 407 | 410 |
/// \brief The base node of the iterator. |
| 408 | 411 |
/// |
| 409 |
/// Gives back the base node of the iterator. |
|
| 410 |
/// It is always the source of the pointed arc. |
|
| 411 |
|
|
| 412 |
/// Returns the base node of the given incomming arc iterator |
|
| 413 |
/// (i.e. the target node of the corresponding arc). |
|
| 414 |
Node baseNode(InArcIt) const { return INVALID; }
|
|
| 412 | 415 |
|
| 413 | 416 |
/// \brief The running node of the iterator. |
| 414 | 417 |
/// |
| 415 |
/// Gives back the running node of the iterator. |
|
| 416 |
/// It is always the target of the pointed arc. |
|
| 417 |
|
|
| 418 |
/// Returns the running node of the given incomming arc iterator |
|
| 419 |
/// (i.e. the source node of the corresponding arc). |
|
| 420 |
Node runningNode(InArcIt) const { return INVALID; }
|
|
| 418 | 421 |
|
| 419 |
/// \brief |
|
| 422 |
/// \brief Standard graph map type for the nodes. |
|
| 420 | 423 |
/// |
| 421 |
/// Gives back the opposite node on the given arc. |
|
| 422 |
Node oppositeNode(const Node&, const Arc&) const { return INVALID; }
|
|
| 423 |
|
|
| 424 |
/// \brief Read write map of the nodes to type \c T. |
|
| 425 |
/// |
|
| 426 |
/// ReadWrite map of the nodes to type \c T. |
|
| 427 |
/// |
|
| 424 |
/// Standard graph map type for the nodes. |
|
| 425 |
/// It conforms to the ReferenceMap concept. |
|
| 428 | 426 |
template<class T> |
| 429 |
class NodeMap : public |
|
| 427 |
class NodeMap : public ReferenceMap<Node, T, T&, const T&> {
|
|
| 430 | 428 |
public: |
| 431 | 429 |
|
| 432 |
///\e |
|
| 433 |
NodeMap(const Digraph&) { }
|
|
| 434 |
/// |
|
| 430 |
/// Constructor |
|
| 431 |
explicit NodeMap(const Digraph&) { }
|
|
| 432 |
/// Constructor with given initial value |
|
| 435 | 433 |
NodeMap(const Digraph&, T) { }
|
| 436 | 434 |
|
| 437 | 435 |
private: |
| 438 | 436 |
///Copy constructor |
| 439 |
NodeMap(const NodeMap& nm) : |
|
| 437 |
NodeMap(const NodeMap& nm) : |
|
| 438 |
ReferenceMap<Node, T, T&, const T&>(nm) { }
|
|
| 440 | 439 |
///Assignment operator |
| 441 | 440 |
template <typename CMap> |
| 442 | 441 |
NodeMap& operator=(const CMap&) {
|
| 443 | 442 |
checkConcept<ReadMap<Node, T>, CMap>(); |
| 444 | 443 |
return *this; |
| 445 | 444 |
} |
| 446 | 445 |
}; |
| 447 | 446 |
|
| 448 |
/// \brief |
|
| 447 |
/// \brief Standard graph map type for the arcs. |
|
| 449 | 448 |
/// |
| 450 |
/// Reference map of the arcs to type \c T. |
|
| 451 |
/// \sa Reference |
|
| 449 |
/// Standard graph map type for the arcs. |
|
| 450 |
/// It conforms to the ReferenceMap concept. |
|
| 452 | 451 |
template<class T> |
| 453 |
class ArcMap : public |
|
| 452 |
class ArcMap : public ReferenceMap<Arc, T, T&, const T&> {
|
|
| 454 | 453 |
public: |
| 455 | 454 |
|
| 456 |
///\e |
|
| 457 |
ArcMap(const Digraph&) { }
|
|
| 458 |
/// |
|
| 455 |
/// Constructor |
|
| 456 |
explicit ArcMap(const Digraph&) { }
|
|
| 457 |
/// Constructor with given initial value |
|
| 459 | 458 |
ArcMap(const Digraph&, T) { }
|
| 459 |
|
|
| 460 | 460 |
private: |
| 461 | 461 |
///Copy constructor |
| 462 |
ArcMap(const ArcMap& em) : |
|
| 462 |
ArcMap(const ArcMap& em) : |
|
| 463 |
ReferenceMap<Arc, T, T&, const T&>(em) { }
|
|
| 463 | 464 |
///Assignment operator |
| 464 | 465 |
template <typename CMap> |
| 465 | 466 |
ArcMap& operator=(const CMap&) {
|
| 466 | 467 |
checkConcept<ReadMap<Arc, T>, CMap>(); |
| 467 | 468 |
return *this; |
| 468 | 469 |
} |
| 469 | 470 |
}; |
| 470 | 471 |
|
| 471 | 472 |
template <typename _Digraph> |
| 472 | 473 |
struct Constraints {
|
| 473 | 474 |
void constraints() {
|
| 475 |
checkConcept<BaseDigraphComponent, _Digraph>(); |
|
| 474 | 476 |
checkConcept<IterableDigraphComponent<>, _Digraph>(); |
| 475 | 477 |
checkConcept<IDableDigraphComponent<>, _Digraph>(); |
| 476 | 478 |
checkConcept<MappableDigraphComponent<>, _Digraph>(); |
| 477 | 479 |
} |
| 478 | 480 |
}; |
| 479 | 481 |
|
| 480 | 482 |
}; |
| 481 | 483 |
|
| 482 | 484 |
} //namespace concepts |
| 483 | 485 |
} //namespace lemon |
| 484 | 486 |
|
| 485 | 487 |
|
| 486 | 488 |
|
| 487 |
#endif |
|
| 489 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
///\ingroup graph_concepts |
| 20 | 20 |
///\file |
| 21 |
///\brief The concept of |
|
| 21 |
///\brief The concept of undirected graphs. |
|
| 22 | 22 |
|
| 23 |
#ifndef LEMON_CONCEPT_GRAPH_H |
|
| 24 |
#define LEMON_CONCEPT_GRAPH_H |
|
| 23 |
#ifndef LEMON_CONCEPTS_GRAPH_H |
|
| 24 |
#define LEMON_CONCEPTS_GRAPH_H |
|
| 25 | 25 |
|
| 26 | 26 |
#include <lemon/concepts/graph_components.h> |
| 27 |
#include <lemon/concepts/ |
|
| 27 |
#include <lemon/concepts/maps.h> |
|
| 28 |
#include <lemon/concept_check.h> |
|
| 28 | 29 |
#include <lemon/core.h> |
| 29 | 30 |
|
| 30 | 31 |
namespace lemon {
|
| 31 | 32 |
namespace concepts {
|
| 32 | 33 |
|
| 33 | 34 |
/// \ingroup graph_concepts |
| 34 | 35 |
/// |
| 35 |
/// \brief Class describing the concept of |
|
| 36 |
/// \brief Class describing the concept of undirected graphs. |
|
| 36 | 37 |
/// |
| 37 |
/// This class describes the common interface of all Undirected |
|
| 38 |
/// Graphs. |
|
| 38 |
/// This class describes the common interface of all undirected |
|
| 39 |
/// graphs. |
|
| 39 | 40 |
/// |
| 40 |
/// As all concept describing classes it provides only interface |
|
| 41 |
/// without any sensible implementation. So any algorithm for |
|
| 42 |
/// |
|
| 41 |
/// Like all concept classes, it only provides an interface |
|
| 42 |
/// without any sensible implementation. So any general algorithm for |
|
| 43 |
/// undirected graphs should compile with this class, but it will not |
|
| 43 | 44 |
/// run properly, of course. |
| 45 |
/// An actual graph implementation like \ref ListGraph or |
|
| 46 |
/// \ref SmartGraph may have additional functionality. |
|
| 44 | 47 |
/// |
| 45 |
/// The LEMON undirected graphs also fulfill the concept of |
|
| 46 |
/// directed graphs (\ref lemon::concepts::Digraph "Digraph |
|
| 47 |
/// Concept"). Each edges can be seen as two opposite |
|
| 48 |
/// directed arc and consequently the undirected graph can be |
|
| 49 |
/// seen as the direceted graph of these directed arcs. The |
|
| 50 |
/// Graph has the Edge inner class for the edges and |
|
| 51 |
/// the Arc type for the directed arcs. The Arc type is |
|
| 52 |
/// convertible to Edge or inherited from it so from a directed |
|
| 53 |
/// |
|
| 48 |
/// The undirected graphs also fulfill the concept of \ref Digraph |
|
| 49 |
/// "directed graphs", since each edge can also be regarded as two |
|
| 50 |
/// oppositely directed arcs. |
|
| 51 |
/// Undirected graphs provide an Edge type for the undirected edges and |
|
| 52 |
/// an Arc type for the directed arcs. The Arc type is convertible to |
|
| 53 |
/// Edge or inherited from it, i.e. the corresponding edge can be |
|
| 54 |
/// obtained from an arc. |
|
| 55 |
/// EdgeIt and EdgeMap classes can be used for the edges, while ArcIt |
|
| 56 |
/// and ArcMap classes can be used for the arcs (just like in digraphs). |
|
| 57 |
/// Both InArcIt and OutArcIt iterates on the same edges but with |
|
| 58 |
/// opposite direction. IncEdgeIt also iterates on the same edges |
|
| 59 |
/// as OutArcIt and InArcIt, but it is not convertible to Arc, |
|
| 60 |
/// only to Edge. |
|
| 54 | 61 |
/// |
| 55 |
/// In the sense of the LEMON each edge has a default |
|
| 56 |
/// direction (it should be in every computer implementation, |
|
| 57 |
/// because the order of edge's nodes defines an |
|
| 58 |
/// orientation). With the default orientation we can define that |
|
| 59 |
/// the directed arc is forward or backward directed. With the \c |
|
| 60 |
/// direction() and \c direct() function we can get the direction |
|
| 61 |
/// |
|
| 62 |
/// In LEMON, each undirected edge has an inherent orientation. |
|
| 63 |
/// Thus it can defined if an arc is forward or backward oriented in |
|
| 64 |
/// an undirected graph with respect to this default oriantation of |
|
| 65 |
/// the represented edge. |
|
| 66 |
/// With the direction() and direct() functions the direction |
|
| 67 |
/// of an arc can be obtained and set, respectively. |
|
| 62 | 68 |
/// |
| 63 |
/// The EdgeIt is an iterator for the edges. We can use |
|
| 64 |
/// the EdgeMap to map values for the edges. The InArcIt and |
|
| 65 |
/// OutArcIt iterates on the same edges but with opposite |
|
| 66 |
/// direction. The IncEdgeIt iterates also on the same edges |
|
| 67 |
/// as the OutArcIt and InArcIt but it is not convertible to Arc just |
|
| 68 |
/// to Edge. |
|
| 69 |
/// Only nodes and edges can be added to or removed from an undirected |
|
| 70 |
/// graph and the corresponding arcs are added or removed automatically. |
|
| 71 |
/// |
|
| 72 |
/// \sa Digraph |
|
| 69 | 73 |
class Graph {
|
| 74 |
private: |
|
| 75 |
/// Graphs are \e not copy constructible. Use DigraphCopy instead. |
|
| 76 |
Graph(const Graph&) {}
|
|
| 77 |
/// \brief Assignment of a graph to another one is \e not allowed. |
|
| 78 |
/// Use DigraphCopy instead. |
|
| 79 |
void operator=(const Graph&) {}
|
|
| 80 |
|
|
| 70 | 81 |
public: |
| 71 |
/// \brief The undirected graph should be tagged by the |
|
| 72 |
/// UndirectedTag. |
|
| 82 |
/// Default constructor. |
|
| 83 |
Graph() {}
|
|
| 84 |
|
|
| 85 |
/// \brief Undirected graphs should be tagged with \c UndirectedTag. |
|
| 73 | 86 |
/// |
| 74 |
/// The undirected graph should be tagged by the UndirectedTag. This |
|
| 75 |
/// tag helps the enable_if technics to make compile time |
|
| 87 |
/// Undirected graphs should be tagged with \c UndirectedTag. |
|
| 88 |
/// |
|
| 89 |
/// This tag helps the \c enable_if technics to make compile time |
|
| 76 | 90 |
/// specializations for undirected graphs. |
| 77 | 91 |
typedef True UndirectedTag; |
| 78 | 92 |
|
| 79 |
/// \brief The base type of node iterators, |
|
| 80 |
/// or in other words, the trivial node iterator. |
|
| 81 |
/// |
|
| 82 |
/// This is the base type of each node iterator, |
|
| 83 |
/// thus each kind of node iterator converts to this. |
|
| 84 |
/// More precisely each kind of node iterator should be inherited |
|
| 85 |
/// |
|
| 93 |
/// The node type of the graph |
|
| 94 |
|
|
| 95 |
/// This class identifies a node of the graph. It also serves |
|
| 96 |
/// as a base class of the node iterators, |
|
| 97 |
/// thus they convert to this type. |
|
| 86 | 98 |
class Node {
|
| 87 | 99 |
public: |
| 88 | 100 |
/// Default constructor |
| 89 | 101 |
|
| 90 |
/// @warning The default constructor sets the iterator |
|
| 91 |
/// to an undefined value. |
|
| 102 |
/// Default constructor. |
|
| 103 |
/// \warning It sets the object to an undefined value. |
|
| 92 | 104 |
Node() { }
|
| 93 | 105 |
/// Copy constructor. |
| 94 | 106 |
|
| 95 | 107 |
/// Copy constructor. |
| 96 | 108 |
/// |
| 97 | 109 |
Node(const Node&) { }
|
| 98 | 110 |
|
| 99 |
/// Invalid constructor \& conversion. |
|
| 111 |
/// %Invalid constructor \& conversion. |
|
| 100 | 112 |
|
| 101 |
/// |
|
| 113 |
/// Initializes the object to be invalid. |
|
| 102 | 114 |
/// \sa Invalid for more details. |
| 103 | 115 |
Node(Invalid) { }
|
| 104 | 116 |
/// Equality operator |
| 105 | 117 |
|
| 118 |
/// Equality operator. |
|
| 119 |
/// |
|
| 106 | 120 |
/// Two iterators are equal if and only if they point to the |
| 107 |
/// same object or both are |
|
| 121 |
/// same object or both are \c INVALID. |
|
| 108 | 122 |
bool operator==(Node) const { return true; }
|
| 109 | 123 |
|
| 110 | 124 |
/// Inequality operator |
| 111 | 125 |
|
| 112 |
/// \sa operator==(Node n) |
|
| 113 |
/// |
|
| 126 |
/// Inequality operator. |
|
| 114 | 127 |
bool operator!=(Node) const { return true; }
|
| 115 | 128 |
|
| 116 | 129 |
/// Artificial ordering operator. |
| 117 | 130 |
|
| 118 |
/// To allow the use of graph descriptors as key type in std::map or |
|
| 119 |
/// similar associative container we require this. |
|
| 131 |
/// Artificial ordering operator. |
|
| 120 | 132 |
/// |
| 121 |
/// \note This operator only |
|
| 133 |
/// \note This operator only has to define some strict ordering of |
|
| 122 | 134 |
/// the items; this order has nothing to do with the iteration |
| 123 | 135 |
/// ordering of the items. |
| 124 | 136 |
bool operator<(Node) const { return false; }
|
| 125 | 137 |
|
| 126 | 138 |
}; |
| 127 | 139 |
|
| 128 |
/// |
|
| 140 |
/// Iterator class for the nodes. |
|
| 129 | 141 |
|
| 130 |
/// This iterator goes through each node. |
|
| 142 |
/// This iterator goes through each node of the graph. |
|
| 131 | 143 |
/// Its usage is quite simple, for example you can count the number |
| 132 |
/// of nodes in graph \c g of type \c Graph like this: |
|
| 144 |
/// of nodes in a graph \c g of type \c %Graph like this: |
|
| 133 | 145 |
///\code |
| 134 | 146 |
/// int count=0; |
| 135 | 147 |
/// for (Graph::NodeIt n(g); n!=INVALID; ++n) ++count; |
| 136 | 148 |
///\endcode |
| 137 | 149 |
class NodeIt : public Node {
|
| 138 | 150 |
public: |
| 139 | 151 |
/// Default constructor |
| 140 | 152 |
|
| 141 |
/// @warning The default constructor sets the iterator |
|
| 142 |
/// to an undefined value. |
|
| 153 |
/// Default constructor. |
|
| 154 |
/// \warning It sets the iterator to an undefined value. |
|
| 143 | 155 |
NodeIt() { }
|
| 144 | 156 |
/// Copy constructor. |
| 145 | 157 |
|
| 146 | 158 |
/// Copy constructor. |
| 147 | 159 |
/// |
| 148 | 160 |
NodeIt(const NodeIt& n) : Node(n) { }
|
| 149 |
/// Invalid constructor \& conversion. |
|
| 161 |
/// %Invalid constructor \& conversion. |
|
| 150 | 162 |
|
| 151 |
/// |
|
| 163 |
/// Initializes the iterator to be invalid. |
|
| 152 | 164 |
/// \sa Invalid for more details. |
| 153 | 165 |
NodeIt(Invalid) { }
|
| 154 | 166 |
/// Sets the iterator to the first node. |
| 155 | 167 |
|
| 156 |
/// Sets the iterator to the first node of |
|
| 168 |
/// Sets the iterator to the first node of the given digraph. |
|
| 157 | 169 |
/// |
| 158 |
NodeIt(const Graph&) { }
|
|
| 159 |
/// Node -> NodeIt conversion. |
|
| 170 |
explicit NodeIt(const Graph&) { }
|
|
| 171 |
/// Sets the iterator to the given node. |
|
| 160 | 172 |
|
| 161 |
/// Sets the iterator to the node of \c the graph pointed by |
|
| 162 |
/// the trivial iterator. |
|
| 163 |
/// This feature necessitates that each time we |
|
| 164 |
/// iterate the arc-set, the iteration order is the same. |
|
| 173 |
/// Sets the iterator to the given node of the given digraph. |
|
| 174 |
/// |
|
| 165 | 175 |
NodeIt(const Graph&, const Node&) { }
|
| 166 | 176 |
/// Next node. |
| 167 | 177 |
|
| 168 | 178 |
/// Assign the iterator to the next node. |
| 169 | 179 |
/// |
| 170 | 180 |
NodeIt& operator++() { return *this; }
|
| 171 | 181 |
}; |
| 172 | 182 |
|
| 173 | 183 |
|
| 174 |
/// The |
|
| 184 |
/// The edge type of the graph |
|
| 175 | 185 |
|
| 176 |
/// The base type of the edge iterators. |
|
| 177 |
/// |
|
| 186 |
/// This class identifies an edge of the graph. It also serves |
|
| 187 |
/// as a base class of the edge iterators, |
|
| 188 |
/// thus they will convert to this type. |
|
| 178 | 189 |
class Edge {
|
| 179 | 190 |
public: |
| 180 | 191 |
/// Default constructor |
| 181 | 192 |
|
| 182 |
/// @warning The default constructor sets the iterator |
|
| 183 |
/// to an undefined value. |
|
| 193 |
/// Default constructor. |
|
| 194 |
/// \warning It sets the object to an undefined value. |
|
| 184 | 195 |
Edge() { }
|
| 185 | 196 |
/// Copy constructor. |
| 186 | 197 |
|
| 187 | 198 |
/// Copy constructor. |
| 188 | 199 |
/// |
| 189 | 200 |
Edge(const Edge&) { }
|
| 190 |
/// |
|
| 201 |
/// %Invalid constructor \& conversion. |
|
| 191 | 202 |
|
| 192 |
/// Initialize the iterator to be invalid. |
|
| 193 |
/// |
|
| 203 |
/// Initializes the object to be invalid. |
|
| 204 |
/// \sa Invalid for more details. |
|
| 194 | 205 |
Edge(Invalid) { }
|
| 195 | 206 |
/// Equality operator |
| 196 | 207 |
|
| 208 |
/// Equality operator. |
|
| 209 |
/// |
|
| 197 | 210 |
/// Two iterators are equal if and only if they point to the |
| 198 |
/// same object or both are |
|
| 211 |
/// same object or both are \c INVALID. |
|
| 199 | 212 |
bool operator==(Edge) const { return true; }
|
| 200 | 213 |
/// Inequality operator |
| 201 | 214 |
|
| 202 |
/// \sa operator==(Edge n) |
|
| 203 |
/// |
|
| 215 |
/// Inequality operator. |
|
| 204 | 216 |
bool operator!=(Edge) const { return true; }
|
| 205 | 217 |
|
| 206 | 218 |
/// Artificial ordering operator. |
| 207 | 219 |
|
| 208 |
/// To allow the use of graph descriptors as key type in std::map or |
|
| 209 |
/// similar associative container we require this. |
|
| 220 |
/// Artificial ordering operator. |
|
| 210 | 221 |
/// |
| 211 |
/// \note This operator only have to define some strict ordering of |
|
| 212 |
/// the items; this order has nothing to do with the iteration |
|
| 213 |
/// ordering of |
|
| 222 |
/// \note This operator only has to define some strict ordering of |
|
| 223 |
/// the edges; this order has nothing to do with the iteration |
|
| 224 |
/// ordering of the edges. |
|
| 214 | 225 |
bool operator<(Edge) const { return false; }
|
| 215 | 226 |
}; |
| 216 | 227 |
|
| 217 |
/// |
|
| 228 |
/// Iterator class for the edges. |
|
| 218 | 229 |
|
| 219 |
/// This iterator goes through each edge of |
|
| 230 |
/// This iterator goes through each edge of the graph. |
|
| 220 | 231 |
/// Its usage is quite simple, for example you can count the number |
| 221 |
/// of edges in a graph \c g of type \c Graph as follows: |
|
| 232 |
/// of edges in a graph \c g of type \c %Graph as follows: |
|
| 222 | 233 |
///\code |
| 223 | 234 |
/// int count=0; |
| 224 | 235 |
/// for(Graph::EdgeIt e(g); e!=INVALID; ++e) ++count; |
| 225 | 236 |
///\endcode |
| 226 | 237 |
class EdgeIt : public Edge {
|
| 227 | 238 |
public: |
| 228 | 239 |
/// Default constructor |
| 229 | 240 |
|
| 230 |
/// @warning The default constructor sets the iterator |
|
| 231 |
/// to an undefined value. |
|
| 241 |
/// Default constructor. |
|
| 242 |
/// \warning It sets the iterator to an undefined value. |
|
| 232 | 243 |
EdgeIt() { }
|
| 233 | 244 |
/// Copy constructor. |
| 234 | 245 |
|
| 235 | 246 |
/// Copy constructor. |
| 236 | 247 |
/// |
| 237 | 248 |
EdgeIt(const EdgeIt& e) : Edge(e) { }
|
| 238 |
/// |
|
| 249 |
/// %Invalid constructor \& conversion. |
|
| 239 | 250 |
|
| 240 |
/// |
|
| 251 |
/// Initializes the iterator to be invalid. |
|
| 252 |
/// \sa Invalid for more details. |
|
| 253 |
EdgeIt(Invalid) { }
|
|
| 254 |
/// Sets the iterator to the first edge. |
|
| 255 |
|
|
| 256 |
/// Sets the iterator to the first edge of the given graph. |
|
| 241 | 257 |
/// |
| 242 |
EdgeIt(Invalid) { }
|
|
| 243 |
/// This constructor sets the iterator to the first edge. |
|
| 258 |
explicit EdgeIt(const Graph&) { }
|
|
| 259 |
/// Sets the iterator to the given edge. |
|
| 244 | 260 |
|
| 245 |
/// This constructor sets the iterator to the first edge. |
|
| 246 |
EdgeIt(const Graph&) { }
|
|
| 247 |
/// Edge -> EdgeIt conversion |
|
| 248 |
|
|
| 249 |
/// Sets the iterator to the value of the trivial iterator. |
|
| 250 |
/// This feature necessitates that each time we |
|
| 251 |
/// iterate the edge-set, the iteration order is the |
|
| 252 |
/// same. |
|
| 261 |
/// Sets the iterator to the given edge of the given graph. |
|
| 262 |
/// |
|
| 253 | 263 |
EdgeIt(const Graph&, const Edge&) { }
|
| 254 | 264 |
/// Next edge |
| 255 | 265 |
|
| 256 | 266 |
/// Assign the iterator to the next edge. |
| 267 |
/// |
|
| 257 | 268 |
EdgeIt& operator++() { return *this; }
|
| 258 | 269 |
}; |
| 259 | 270 |
|
| 260 |
/// \brief This iterator goes trough the incident undirected |
|
| 261 |
/// arcs of a node. |
|
| 262 |
/// |
|
| 263 |
/// This iterator goes trough the incident edges |
|
| 264 |
/// of a certain node of a graph. You should assume that the |
|
| 265 |
/// loop arcs will be iterated twice. |
|
| 266 |
/// |
|
| 271 |
/// Iterator class for the incident edges of a node. |
|
| 272 |
|
|
| 273 |
/// This iterator goes trough the incident undirected edges |
|
| 274 |
/// of a certain node of a graph. |
|
| 267 | 275 |
/// Its usage is quite simple, for example you can compute the |
| 268 |
/// degree (i.e. count the number of incident arcs of a node \c n |
|
| 269 |
/// in graph \c g of type \c Graph as follows. |
|
| 276 |
/// degree (i.e. the number of incident edges) of a node \c n |
|
| 277 |
/// in a graph \c g of type \c %Graph as follows. |
|
| 270 | 278 |
/// |
| 271 | 279 |
///\code |
| 272 | 280 |
/// int count=0; |
| 273 | 281 |
/// for(Graph::IncEdgeIt e(g, n); e!=INVALID; ++e) ++count; |
| 274 | 282 |
///\endcode |
| 283 |
/// |
|
| 284 |
/// \warning Loop edges will be iterated twice. |
|
| 275 | 285 |
class IncEdgeIt : public Edge {
|
| 276 | 286 |
public: |
| 277 | 287 |
/// Default constructor |
| 278 | 288 |
|
| 279 |
/// @warning The default constructor sets the iterator |
|
| 280 |
/// to an undefined value. |
|
| 289 |
/// Default constructor. |
|
| 290 |
/// \warning It sets the iterator to an undefined value. |
|
| 281 | 291 |
IncEdgeIt() { }
|
| 282 | 292 |
/// Copy constructor. |
| 283 | 293 |
|
| 284 | 294 |
/// Copy constructor. |
| 285 | 295 |
/// |
| 286 | 296 |
IncEdgeIt(const IncEdgeIt& e) : Edge(e) { }
|
| 287 |
/// |
|
| 297 |
/// %Invalid constructor \& conversion. |
|
| 288 | 298 |
|
| 289 |
/// |
|
| 299 |
/// Initializes the iterator to be invalid. |
|
| 300 |
/// \sa Invalid for more details. |
|
| 301 |
IncEdgeIt(Invalid) { }
|
|
| 302 |
/// Sets the iterator to the first incident edge. |
|
| 303 |
|
|
| 304 |
/// Sets the iterator to the first incident edge of the given node. |
|
| 290 | 305 |
/// |
| 291 |
IncEdgeIt(Invalid) { }
|
|
| 292 |
/// This constructor sets the iterator to first incident arc. |
|
| 306 |
IncEdgeIt(const Graph&, const Node&) { }
|
|
| 307 |
/// Sets the iterator to the given edge. |
|
| 293 | 308 |
|
| 294 |
/// This constructor set the iterator to the first incident arc of |
|
| 295 |
/// the node. |
|
| 296 |
IncEdgeIt(const Graph&, const Node&) { }
|
|
| 297 |
/// Edge -> IncEdgeIt conversion |
|
| 309 |
/// Sets the iterator to the given edge of the given graph. |
|
| 310 |
/// |
|
| 311 |
IncEdgeIt(const Graph&, const Edge&) { }
|
|
| 312 |
/// Next incident edge |
|
| 298 | 313 |
|
| 299 |
/// Sets the iterator to the value of the trivial iterator \c e. |
|
| 300 |
/// This feature necessitates that each time we |
|
| 301 |
/// iterate the arc-set, the iteration order is the same. |
|
| 302 |
IncEdgeIt(const Graph&, const Edge&) { }
|
|
| 303 |
/// Next incident arc |
|
| 304 |
|
|
| 305 |
/// Assign the iterator to the next incident |
|
| 314 |
/// Assign the iterator to the next incident edge |
|
| 306 | 315 |
/// of the corresponding node. |
| 307 | 316 |
IncEdgeIt& operator++() { return *this; }
|
| 308 | 317 |
}; |
| 309 | 318 |
|
| 310 |
/// The |
|
| 319 |
/// The arc type of the graph |
|
| 311 | 320 |
|
| 312 |
/// The directed arc type. It can be converted to the |
|
| 313 |
/// edge or it should be inherited from the undirected |
|
| 314 |
/// arc. |
|
| 315 |
class Arc : public Edge {
|
|
| 321 |
/// This class identifies a directed arc of the graph. It also serves |
|
| 322 |
/// as a base class of the arc iterators, |
|
| 323 |
/// thus they will convert to this type. |
|
| 324 |
class Arc {
|
|
| 316 | 325 |
public: |
| 317 | 326 |
/// Default constructor |
| 318 | 327 |
|
| 319 |
/// @warning The default constructor sets the iterator |
|
| 320 |
/// to an undefined value. |
|
| 328 |
/// Default constructor. |
|
| 329 |
/// \warning It sets the object to an undefined value. |
|
| 321 | 330 |
Arc() { }
|
| 322 | 331 |
/// Copy constructor. |
| 323 | 332 |
|
| 324 | 333 |
/// Copy constructor. |
| 325 | 334 |
/// |
| 326 |
Arc(const Arc& e) : Edge(e) { }
|
|
| 327 |
/// Initialize the iterator to be invalid. |
|
| 335 |
Arc(const Arc&) { }
|
|
| 336 |
/// %Invalid constructor \& conversion. |
|
| 328 | 337 |
|
| 329 |
/// Initialize the iterator to be invalid. |
|
| 330 |
/// |
|
| 338 |
/// Initializes the object to be invalid. |
|
| 339 |
/// \sa Invalid for more details. |
|
| 331 | 340 |
Arc(Invalid) { }
|
| 332 | 341 |
/// Equality operator |
| 333 | 342 |
|
| 343 |
/// Equality operator. |
|
| 344 |
/// |
|
| 334 | 345 |
/// Two iterators are equal if and only if they point to the |
| 335 |
/// same object or both are |
|
| 346 |
/// same object or both are \c INVALID. |
|
| 336 | 347 |
bool operator==(Arc) const { return true; }
|
| 337 | 348 |
/// Inequality operator |
| 338 | 349 |
|
| 339 |
/// \sa operator==(Arc n) |
|
| 340 |
/// |
|
| 350 |
/// Inequality operator. |
|
| 341 | 351 |
bool operator!=(Arc) const { return true; }
|
| 342 | 352 |
|
| 343 | 353 |
/// Artificial ordering operator. |
| 344 | 354 |
|
| 345 |
/// To allow the use of graph descriptors as key type in std::map or |
|
| 346 |
/// similar associative container we require this. |
|
| 355 |
/// Artificial ordering operator. |
|
| 347 | 356 |
/// |
| 348 |
/// \note This operator only have to define some strict ordering of |
|
| 349 |
/// the items; this order has nothing to do with the iteration |
|
| 350 |
/// ordering of |
|
| 357 |
/// \note This operator only has to define some strict ordering of |
|
| 358 |
/// the arcs; this order has nothing to do with the iteration |
|
| 359 |
/// ordering of the arcs. |
|
| 351 | 360 |
bool operator<(Arc) const { return false; }
|
| 352 | 361 |
|
| 362 |
/// Converison to \c Edge |
|
| 363 |
|
|
| 364 |
/// Converison to \c Edge. |
|
| 365 |
/// |
|
| 366 |
operator Edge() const { return Edge(); }
|
|
| 353 | 367 |
}; |
| 354 |
/// This iterator goes through each directed arc. |
|
| 355 | 368 |
|
| 356 |
/// |
|
| 369 |
/// Iterator class for the arcs. |
|
| 370 |
|
|
| 371 |
/// This iterator goes through each directed arc of the graph. |
|
| 357 | 372 |
/// Its usage is quite simple, for example you can count the number |
| 358 |
/// of arcs in a graph \c g of type \c Graph as follows: |
|
| 373 |
/// of arcs in a graph \c g of type \c %Graph as follows: |
|
| 359 | 374 |
///\code |
| 360 | 375 |
/// int count=0; |
| 361 |
/// for(Graph::ArcIt |
|
| 376 |
/// for(Graph::ArcIt a(g); a!=INVALID; ++a) ++count; |
|
| 362 | 377 |
///\endcode |
| 363 | 378 |
class ArcIt : public Arc {
|
| 364 | 379 |
public: |
| 365 | 380 |
/// Default constructor |
| 366 | 381 |
|
| 367 |
/// @warning The default constructor sets the iterator |
|
| 368 |
/// to an undefined value. |
|
| 382 |
/// Default constructor. |
|
| 383 |
/// \warning It sets the iterator to an undefined value. |
|
| 369 | 384 |
ArcIt() { }
|
| 370 | 385 |
/// Copy constructor. |
| 371 | 386 |
|
| 372 | 387 |
/// Copy constructor. |
| 373 | 388 |
/// |
| 374 | 389 |
ArcIt(const ArcIt& e) : Arc(e) { }
|
| 375 |
/// |
|
| 390 |
/// %Invalid constructor \& conversion. |
|
| 376 | 391 |
|
| 377 |
/// |
|
| 392 |
/// Initializes the iterator to be invalid. |
|
| 393 |
/// \sa Invalid for more details. |
|
| 394 |
ArcIt(Invalid) { }
|
|
| 395 |
/// Sets the iterator to the first arc. |
|
| 396 |
|
|
| 397 |
/// Sets the iterator to the first arc of the given graph. |
|
| 378 | 398 |
/// |
| 379 |
ArcIt(Invalid) { }
|
|
| 380 |
/// This constructor sets the iterator to the first arc. |
|
| 399 |
explicit ArcIt(const Graph &g) { ignore_unused_variable_warning(g); }
|
|
| 400 |
/// Sets the iterator to the given arc. |
|
| 381 | 401 |
|
| 382 |
/// This constructor sets the iterator to the first arc of \c g. |
|
| 383 |
///@param g the graph |
|
| 384 |
ArcIt(const Graph &g) { ignore_unused_variable_warning(g); }
|
|
| 385 |
/// Arc -> ArcIt conversion |
|
| 386 |
|
|
| 387 |
/// Sets the iterator to the value of the trivial iterator \c e. |
|
| 388 |
/// This feature necessitates that each time we |
|
| 389 |
/// iterate the arc-set, the iteration order is the same. |
|
| 402 |
/// Sets the iterator to the given arc of the given graph. |
|
| 403 |
/// |
|
| 390 | 404 |
ArcIt(const Graph&, const Arc&) { }
|
| 391 |
///Next arc |
|
| 405 |
/// Next arc |
|
| 392 | 406 |
|
| 393 | 407 |
/// Assign the iterator to the next arc. |
| 408 |
/// |
|
| 394 | 409 |
ArcIt& operator++() { return *this; }
|
| 395 | 410 |
}; |
| 396 | 411 |
|
| 397 |
/// |
|
| 412 |
/// Iterator class for the outgoing arcs of a node. |
|
| 398 | 413 |
|
| 399 |
/// This iterator goes trough the \e outgoing arcs of a certain node |
|
| 400 |
/// of a graph. |
|
| 414 |
/// This iterator goes trough the \e outgoing directed arcs of a |
|
| 415 |
/// certain node of a graph. |
|
| 401 | 416 |
/// Its usage is quite simple, for example you can count the number |
| 402 | 417 |
/// of outgoing arcs of a node \c n |
| 403 |
/// in graph \c g of type \c Graph as follows. |
|
| 418 |
/// in a graph \c g of type \c %Graph as follows. |
|
| 404 | 419 |
///\code |
| 405 | 420 |
/// int count=0; |
| 406 |
/// for ( |
|
| 421 |
/// for (Digraph::OutArcIt a(g, n); a!=INVALID; ++a) ++count; |
|
| 407 | 422 |
///\endcode |
| 408 |
|
|
| 409 | 423 |
class OutArcIt : public Arc {
|
| 410 | 424 |
public: |
| 411 | 425 |
/// Default constructor |
| 412 | 426 |
|
| 413 |
/// @warning The default constructor sets the iterator |
|
| 414 |
/// to an undefined value. |
|
| 427 |
/// Default constructor. |
|
| 428 |
/// \warning It sets the iterator to an undefined value. |
|
| 415 | 429 |
OutArcIt() { }
|
| 416 | 430 |
/// Copy constructor. |
| 417 | 431 |
|
| 418 | 432 |
/// Copy constructor. |
| 419 | 433 |
/// |
| 420 | 434 |
OutArcIt(const OutArcIt& e) : Arc(e) { }
|
| 421 |
/// |
|
| 435 |
/// %Invalid constructor \& conversion. |
|
| 422 | 436 |
|
| 423 |
/// |
|
| 437 |
/// Initializes the iterator to be invalid. |
|
| 438 |
/// \sa Invalid for more details. |
|
| 439 |
OutArcIt(Invalid) { }
|
|
| 440 |
/// Sets the iterator to the first outgoing arc. |
|
| 441 |
|
|
| 442 |
/// Sets the iterator to the first outgoing arc of the given node. |
|
| 424 | 443 |
/// |
| 425 |
OutArcIt(Invalid) { }
|
|
| 426 |
/// This constructor sets the iterator to the first outgoing arc. |
|
| 427 |
|
|
| 428 |
/// This constructor sets the iterator to the first outgoing arc of |
|
| 429 |
/// the node. |
|
| 430 |
///@param n the node |
|
| 431 |
///@param g the graph |
|
| 432 | 444 |
OutArcIt(const Graph& n, const Node& g) {
|
| 433 | 445 |
ignore_unused_variable_warning(n); |
| 434 | 446 |
ignore_unused_variable_warning(g); |
| 435 | 447 |
} |
| 436 |
/// |
|
| 448 |
/// Sets the iterator to the given arc. |
|
| 437 | 449 |
|
| 438 |
/// Sets the iterator to the value of the trivial iterator. |
|
| 439 |
/// This feature necessitates that each time we |
|
| 440 |
/// |
|
| 450 |
/// Sets the iterator to the given arc of the given graph. |
|
| 451 |
/// |
|
| 441 | 452 |
OutArcIt(const Graph&, const Arc&) { }
|
| 442 |
///Next outgoing arc |
|
| 453 |
/// Next outgoing arc |
|
| 443 | 454 |
|
| 444 | 455 |
/// Assign the iterator to the next |
| 445 | 456 |
/// outgoing arc of the corresponding node. |
| 446 | 457 |
OutArcIt& operator++() { return *this; }
|
| 447 | 458 |
}; |
| 448 | 459 |
|
| 449 |
/// |
|
| 460 |
/// Iterator class for the incoming arcs of a node. |
|
| 450 | 461 |
|
| 451 |
/// This iterator goes trough the \e incoming arcs of a certain node |
|
| 452 |
/// of a graph. |
|
| 462 |
/// This iterator goes trough the \e incoming directed arcs of a |
|
| 463 |
/// certain node of a graph. |
|
| 453 | 464 |
/// Its usage is quite simple, for example you can count the number |
| 454 |
/// of outgoing arcs of a node \c n |
|
| 455 |
/// in graph \c g of type \c Graph as follows. |
|
| 465 |
/// of incoming arcs of a node \c n |
|
| 466 |
/// in a graph \c g of type \c %Graph as follows. |
|
| 456 | 467 |
///\code |
| 457 | 468 |
/// int count=0; |
| 458 |
/// for( |
|
| 469 |
/// for (Digraph::InArcIt a(g, n); a!=INVALID; ++a) ++count; |
|
| 459 | 470 |
///\endcode |
| 460 |
|
|
| 461 | 471 |
class InArcIt : public Arc {
|
| 462 | 472 |
public: |
| 463 | 473 |
/// Default constructor |
| 464 | 474 |
|
| 465 |
/// @warning The default constructor sets the iterator |
|
| 466 |
/// to an undefined value. |
|
| 475 |
/// Default constructor. |
|
| 476 |
/// \warning It sets the iterator to an undefined value. |
|
| 467 | 477 |
InArcIt() { }
|
| 468 | 478 |
/// Copy constructor. |
| 469 | 479 |
|
| 470 | 480 |
/// Copy constructor. |
| 471 | 481 |
/// |
| 472 | 482 |
InArcIt(const InArcIt& e) : Arc(e) { }
|
| 473 |
/// |
|
| 483 |
/// %Invalid constructor \& conversion. |
|
| 474 | 484 |
|
| 475 |
/// |
|
| 485 |
/// Initializes the iterator to be invalid. |
|
| 486 |
/// \sa Invalid for more details. |
|
| 487 |
InArcIt(Invalid) { }
|
|
| 488 |
/// Sets the iterator to the first incoming arc. |
|
| 489 |
|
|
| 490 |
/// Sets the iterator to the first incoming arc of the given node. |
|
| 476 | 491 |
/// |
| 477 |
InArcIt(Invalid) { }
|
|
| 478 |
/// This constructor sets the iterator to first incoming arc. |
|
| 479 |
|
|
| 480 |
/// This constructor set the iterator to the first incoming arc of |
|
| 481 |
/// the node. |
|
| 482 |
///@param n the node |
|
| 483 |
///@param g the graph |
|
| 484 | 492 |
InArcIt(const Graph& g, const Node& n) {
|
| 485 | 493 |
ignore_unused_variable_warning(n); |
| 486 | 494 |
ignore_unused_variable_warning(g); |
| 487 | 495 |
} |
| 488 |
/// |
|
| 496 |
/// Sets the iterator to the given arc. |
|
| 489 | 497 |
|
| 490 |
/// Sets the iterator to the value of the trivial iterator \c e. |
|
| 491 |
/// This feature necessitates that each time we |
|
| 492 |
/// |
|
| 498 |
/// Sets the iterator to the given arc of the given graph. |
|
| 499 |
/// |
|
| 493 | 500 |
InArcIt(const Graph&, const Arc&) { }
|
| 494 | 501 |
/// Next incoming arc |
| 495 | 502 |
|
| 496 |
/// Assign the iterator to the next inarc of the corresponding node. |
|
| 497 |
/// |
|
| 503 |
/// Assign the iterator to the next |
|
| 504 |
/// incoming arc of the corresponding node. |
|
| 498 | 505 |
InArcIt& operator++() { return *this; }
|
| 499 | 506 |
}; |
| 500 | 507 |
|
| 501 |
/// \brief |
|
| 508 |
/// \brief Standard graph map type for the nodes. |
|
| 502 | 509 |
/// |
| 503 |
/// ReadWrite map of the nodes to type \c T. |
|
| 504 |
/// \sa Reference |
|
| 510 |
/// Standard graph map type for the nodes. |
|
| 511 |
/// It conforms to the ReferenceMap concept. |
|
| 505 | 512 |
template<class T> |
| 506 |
class NodeMap : public |
|
| 513 |
class NodeMap : public ReferenceMap<Node, T, T&, const T&> |
|
| 507 | 514 |
{
|
| 508 | 515 |
public: |
| 509 | 516 |
|
| 510 |
///\e |
|
| 511 |
NodeMap(const Graph&) { }
|
|
| 512 |
/// |
|
| 517 |
/// Constructor |
|
| 518 |
explicit NodeMap(const Graph&) { }
|
|
| 519 |
/// Constructor with given initial value |
|
| 513 | 520 |
NodeMap(const Graph&, T) { }
|
| 514 | 521 |
|
| 515 | 522 |
private: |
| 516 | 523 |
///Copy constructor |
| 517 |
NodeMap(const NodeMap& nm) : |
|
| 524 |
NodeMap(const NodeMap& nm) : |
|
| 525 |
ReferenceMap<Node, T, T&, const T&>(nm) { }
|
|
| 518 | 526 |
///Assignment operator |
| 519 | 527 |
template <typename CMap> |
| 520 | 528 |
NodeMap& operator=(const CMap&) {
|
| 521 | 529 |
checkConcept<ReadMap<Node, T>, CMap>(); |
| 522 | 530 |
return *this; |
| 523 | 531 |
} |
| 524 | 532 |
}; |
| 525 | 533 |
|
| 526 |
/// \brief |
|
| 534 |
/// \brief Standard graph map type for the arcs. |
|
| 527 | 535 |
/// |
| 528 |
/// Reference map of the directed arcs to type \c T. |
|
| 529 |
/// \sa Reference |
|
| 536 |
/// Standard graph map type for the arcs. |
|
| 537 |
/// It conforms to the ReferenceMap concept. |
|
| 530 | 538 |
template<class T> |
| 531 |
class ArcMap : public |
|
| 539 |
class ArcMap : public ReferenceMap<Arc, T, T&, const T&> |
|
| 532 | 540 |
{
|
| 533 | 541 |
public: |
| 534 | 542 |
|
| 535 |
///\e |
|
| 536 |
ArcMap(const Graph&) { }
|
|
| 537 |
/// |
|
| 543 |
/// Constructor |
|
| 544 |
explicit ArcMap(const Graph&) { }
|
|
| 545 |
/// Constructor with given initial value |
|
| 538 | 546 |
ArcMap(const Graph&, T) { }
|
| 547 |
|
|
| 539 | 548 |
private: |
| 540 | 549 |
///Copy constructor |
| 541 |
ArcMap(const ArcMap& em) : |
|
| 550 |
ArcMap(const ArcMap& em) : |
|
| 551 |
ReferenceMap<Arc, T, T&, const T&>(em) { }
|
|
| 542 | 552 |
///Assignment operator |
| 543 | 553 |
template <typename CMap> |
| 544 | 554 |
ArcMap& operator=(const CMap&) {
|
| 545 | 555 |
checkConcept<ReadMap<Arc, T>, CMap>(); |
| 546 | 556 |
return *this; |
| 547 | 557 |
} |
| 548 | 558 |
}; |
| 549 | 559 |
|
| 550 |
/// Read write map of the edges to type \c T. |
|
| 551 |
|
|
| 552 |
/// Reference map of the arcs to type \c T. |
|
| 553 |
/// \sa Reference |
|
| 560 |
/// \brief Standard graph map type for the edges. |
|
| 561 |
/// |
|
| 562 |
/// Standard graph map type for the edges. |
|
| 563 |
/// It conforms to the ReferenceMap concept. |
|
| 554 | 564 |
template<class T> |
| 555 |
class EdgeMap : public |
|
| 565 |
class EdgeMap : public ReferenceMap<Edge, T, T&, const T&> |
|
| 556 | 566 |
{
|
| 557 | 567 |
public: |
| 558 | 568 |
|
| 559 |
///\e |
|
| 560 |
EdgeMap(const Graph&) { }
|
|
| 561 |
/// |
|
| 569 |
/// Constructor |
|
| 570 |
explicit EdgeMap(const Graph&) { }
|
|
| 571 |
/// Constructor with given initial value |
|
| 562 | 572 |
EdgeMap(const Graph&, T) { }
|
| 573 |
|
|
| 563 | 574 |
private: |
| 564 | 575 |
///Copy constructor |
| 565 |
EdgeMap(const EdgeMap& em) : |
|
| 576 |
EdgeMap(const EdgeMap& em) : |
|
| 577 |
ReferenceMap<Edge, T, T&, const T&>(em) {}
|
|
| 566 | 578 |
///Assignment operator |
| 567 | 579 |
template <typename CMap> |
| 568 | 580 |
EdgeMap& operator=(const CMap&) {
|
| 569 | 581 |
checkConcept<ReadMap<Edge, T>, CMap>(); |
| 570 | 582 |
return *this; |
| 571 | 583 |
} |
| 572 | 584 |
}; |
| 573 | 585 |
|
| 574 |
/// \brief |
|
| 586 |
/// \brief The first node of the edge. |
|
| 575 | 587 |
/// |
| 576 |
/// Direct the given edge. The returned arc source |
|
| 577 |
/// will be the given node. |
|
| 578 |
|
|
| 588 |
/// Returns the first node of the given edge. |
|
| 589 |
/// |
|
| 590 |
/// Edges don't have source and target nodes, however methods |
|
| 591 |
/// u() and v() are used to query the two end-nodes of an edge. |
|
| 592 |
/// The orientation of an edge that arises this way is called |
|
| 593 |
/// the inherent direction, it is used to define the default |
|
| 594 |
/// direction for the corresponding arcs. |
|
| 595 |
/// \sa v() |
|
| 596 |
/// \sa direction() |
|
| 597 |
Node u(Edge) const { return INVALID; }
|
|
| 598 |
|
|
| 599 |
/// \brief The second node of the edge. |
|
| 600 |
/// |
|
| 601 |
/// Returns the second node of the given edge. |
|
| 602 |
/// |
|
| 603 |
/// Edges don't have source and target nodes, however methods |
|
| 604 |
/// u() and v() are used to query the two end-nodes of an edge. |
|
| 605 |
/// The orientation of an edge that arises this way is called |
|
| 606 |
/// the inherent direction, it is used to define the default |
|
| 607 |
/// direction for the corresponding arcs. |
|
| 608 |
/// \sa u() |
|
| 609 |
/// \sa direction() |
|
| 610 |
Node v(Edge) const { return INVALID; }
|
|
| 611 |
|
|
| 612 |
/// \brief The source node of the arc. |
|
| 613 |
/// |
|
| 614 |
/// Returns the source node of the given arc. |
|
| 615 |
Node source(Arc) const { return INVALID; }
|
|
| 616 |
|
|
| 617 |
/// \brief The target node of the arc. |
|
| 618 |
/// |
|
| 619 |
/// Returns the target node of the given arc. |
|
| 620 |
Node target(Arc) const { return INVALID; }
|
|
| 621 |
|
|
| 622 |
/// \brief The ID of the node. |
|
| 623 |
/// |
|
| 624 |
/// Returns the ID of the given node. |
|
| 625 |
int id(Node) const { return -1; }
|
|
| 626 |
|
|
| 627 |
/// \brief The ID of the edge. |
|
| 628 |
/// |
|
| 629 |
/// Returns the ID of the given edge. |
|
| 630 |
int id(Edge) const { return -1; }
|
|
| 631 |
|
|
| 632 |
/// \brief The ID of the arc. |
|
| 633 |
/// |
|
| 634 |
/// Returns the ID of the given arc. |
|
| 635 |
int id(Arc) const { return -1; }
|
|
| 636 |
|
|
| 637 |
/// \brief The node with the given ID. |
|
| 638 |
/// |
|
| 639 |
/// Returns the node with the given ID. |
|
| 640 |
/// \pre The argument should be a valid node ID in the graph. |
|
| 641 |
Node nodeFromId(int) const { return INVALID; }
|
|
| 642 |
|
|
| 643 |
/// \brief The edge with the given ID. |
|
| 644 |
/// |
|
| 645 |
/// Returns the edge with the given ID. |
|
| 646 |
/// \pre The argument should be a valid edge ID in the graph. |
|
| 647 |
Edge edgeFromId(int) const { return INVALID; }
|
|
| 648 |
|
|
| 649 |
/// \brief The arc with the given ID. |
|
| 650 |
/// |
|
| 651 |
/// Returns the arc with the given ID. |
|
| 652 |
/// \pre The argument should be a valid arc ID in the graph. |
|
| 653 |
Arc arcFromId(int) const { return INVALID; }
|
|
| 654 |
|
|
| 655 |
/// \brief An upper bound on the node IDs. |
|
| 656 |
/// |
|
| 657 |
/// Returns an upper bound on the node IDs. |
|
| 658 |
int maxNodeId() const { return -1; }
|
|
| 659 |
|
|
| 660 |
/// \brief An upper bound on the edge IDs. |
|
| 661 |
/// |
|
| 662 |
/// Returns an upper bound on the edge IDs. |
|
| 663 |
int maxEdgeId() const { return -1; }
|
|
| 664 |
|
|
| 665 |
/// \brief An upper bound on the arc IDs. |
|
| 666 |
/// |
|
| 667 |
/// Returns an upper bound on the arc IDs. |
|
| 668 |
int maxArcId() const { return -1; }
|
|
| 669 |
|
|
| 670 |
/// \brief The direction of the arc. |
|
| 671 |
/// |
|
| 672 |
/// Returns \c true if the direction of the given arc is the same as |
|
| 673 |
/// the inherent orientation of the represented edge. |
|
| 674 |
bool direction(Arc) const { return true; }
|
|
| 675 |
|
|
| 676 |
/// \brief Direct the edge. |
|
| 677 |
/// |
|
| 678 |
/// Direct the given edge. The returned arc |
|
| 679 |
/// represents the given edge and its direction comes |
|
| 680 |
/// from the bool parameter. If it is \c true, then the direction |
|
| 681 |
/// of the arc is the same as the inherent orientation of the edge. |
|
| 682 |
Arc direct(Edge, bool) const {
|
|
| 579 | 683 |
return INVALID; |
| 580 | 684 |
} |
| 581 | 685 |
|
| 582 |
/// \brief Direct the |
|
| 686 |
/// \brief Direct the edge. |
|
| 583 | 687 |
/// |
| 584 |
/// Direct the given edge. The returned arc |
|
| 585 |
/// represents the given edge and the direction comes |
|
| 586 |
/// from the bool parameter. The source of the edge and |
|
| 587 |
/// the directed arc is the same when the given bool is true. |
|
| 588 |
|
|
| 688 |
/// Direct the given edge. The returned arc represents the given |
|
| 689 |
/// edge and its source node is the given node. |
|
| 690 |
Arc direct(Edge, Node) const {
|
|
| 589 | 691 |
return INVALID; |
| 590 | 692 |
} |
| 591 | 693 |
|
| 592 |
/// \brief |
|
| 694 |
/// \brief The oppositely directed arc. |
|
| 593 | 695 |
/// |
| 594 |
/// Returns whether the given directed arc is same orientation as |
|
| 595 |
/// the corresponding edge's default orientation. |
|
| 596 |
bool direction(Arc) const { return true; }
|
|
| 597 |
|
|
| 598 |
/// \brief Returns the opposite directed arc. |
|
| 599 |
/// |
|
| 600 |
/// Returns the |
|
| 696 |
/// Returns the oppositely directed arc representing the same edge. |
|
| 601 | 697 |
Arc oppositeArc(Arc) const { return INVALID; }
|
| 602 | 698 |
|
| 603 |
/// \brief |
|
| 699 |
/// \brief The opposite node on the edge. |
|
| 604 | 700 |
/// |
| 605 |
/// |
|
| 701 |
/// Returns the opposite node on the given edge. |
|
| 606 | 702 |
Node oppositeNode(Node, Edge) const { return INVALID; }
|
| 607 | 703 |
|
| 608 |
/// \brief First node of the edge. |
|
| 609 |
/// |
|
| 610 |
/// \return the first node of the given Edge. |
|
| 611 |
/// |
|
| 612 |
/// Naturally edges don't have direction and thus |
|
| 613 |
/// don't have source and target node. But we use these two methods |
|
| 614 |
/// to query the two nodes of the arc. The direction of the arc |
|
| 615 |
/// which arises this way is called the inherent direction of the |
|
| 616 |
/// edge, and is used to define the "default" direction |
|
| 617 |
/// of the directed versions of the arcs. |
|
| 618 |
/// \sa direction |
|
| 619 |
Node u(Edge) const { return INVALID; }
|
|
| 620 |
|
|
| 621 |
/// \brief Second node of the edge. |
|
| 622 |
Node v(Edge) const { return INVALID; }
|
|
| 623 |
|
|
| 624 |
/// \brief Source node of the directed arc. |
|
| 625 |
Node source(Arc) const { return INVALID; }
|
|
| 626 |
|
|
| 627 |
/// \brief Target node of the directed arc. |
|
| 628 |
Node target(Arc) const { return INVALID; }
|
|
| 629 |
|
|
| 630 |
/// \brief Returns the id of the node. |
|
| 631 |
int id(Node) const { return -1; }
|
|
| 632 |
|
|
| 633 |
/// \brief Returns the id of the edge. |
|
| 634 |
int id(Edge) const { return -1; }
|
|
| 635 |
|
|
| 636 |
/// \brief Returns the id of the arc. |
|
| 637 |
int id(Arc) const { return -1; }
|
|
| 638 |
|
|
| 639 |
/// \brief Returns the node with the given id. |
|
| 640 |
/// |
|
| 641 |
/// \pre The argument should be a valid node id in the graph. |
|
| 642 |
Node nodeFromId(int) const { return INVALID; }
|
|
| 643 |
|
|
| 644 |
/// \brief Returns the edge with the given id. |
|
| 645 |
/// |
|
| 646 |
/// \pre The argument should be a valid edge id in the graph. |
|
| 647 |
Edge edgeFromId(int) const { return INVALID; }
|
|
| 648 |
|
|
| 649 |
/// \brief Returns the arc with the given id. |
|
| 650 |
/// |
|
| 651 |
/// \pre The argument should be a valid arc id in the graph. |
|
| 652 |
Arc arcFromId(int) const { return INVALID; }
|
|
| 653 |
|
|
| 654 |
/// \brief Returns an upper bound on the node IDs. |
|
| 655 |
int maxNodeId() const { return -1; }
|
|
| 656 |
|
|
| 657 |
/// \brief Returns an upper bound on the edge IDs. |
|
| 658 |
int maxEdgeId() const { return -1; }
|
|
| 659 |
|
|
| 660 |
/// \brief Returns an upper bound on the arc IDs. |
|
| 661 |
int maxArcId() const { return -1; }
|
|
| 662 |
|
|
| 663 | 704 |
void first(Node&) const {}
|
| 664 | 705 |
void next(Node&) const {}
|
| 665 | 706 |
|
| 666 | 707 |
void first(Edge&) const {}
|
| 667 | 708 |
void next(Edge&) const {}
|
| 668 | 709 |
|
| 669 | 710 |
void first(Arc&) const {}
|
| 670 | 711 |
void next(Arc&) const {}
|
| 671 | 712 |
|
| 672 | 713 |
void firstOut(Arc&, Node) const {}
|
| 673 | 714 |
void nextOut(Arc&) const {}
|
| 674 | 715 |
|
| 675 | 716 |
void firstIn(Arc&, Node) const {}
|
| 676 | 717 |
void nextIn(Arc&) const {}
|
| 677 | 718 |
|
| 678 | 719 |
void firstInc(Edge &, bool &, const Node &) const {}
|
| 679 | 720 |
void nextInc(Edge &, bool &) const {}
|
| 680 | 721 |
|
| 681 | 722 |
// The second parameter is dummy. |
| 682 | 723 |
Node fromId(int, Node) const { return INVALID; }
|
| 683 | 724 |
// The second parameter is dummy. |
| 684 | 725 |
Edge fromId(int, Edge) const { return INVALID; }
|
| 685 | 726 |
// The second parameter is dummy. |
| 686 | 727 |
Arc fromId(int, Arc) const { return INVALID; }
|
| 687 | 728 |
|
| 688 | 729 |
// Dummy parameter. |
| 689 | 730 |
int maxId(Node) const { return -1; }
|
| 690 | 731 |
// Dummy parameter. |
| 691 | 732 |
int maxId(Edge) const { return -1; }
|
| 692 | 733 |
// Dummy parameter. |
| 693 | 734 |
int maxId(Arc) const { return -1; }
|
| 694 | 735 |
|
| 695 |
/// \brief |
|
| 736 |
/// \brief The base node of the iterator. |
|
| 696 | 737 |
/// |
| 697 |
/// Returns the base node (the source in this case) of the iterator |
|
| 698 |
Node baseNode(OutArcIt e) const {
|
|
| 699 |
return source(e); |
|
| 700 |
} |
|
| 701 |
/// |
|
| 738 |
/// Returns the base node of the given incident edge iterator. |
|
| 739 |
Node baseNode(IncEdgeIt) const { return INVALID; }
|
|
| 740 |
|
|
| 741 |
/// \brief The running node of the iterator. |
|
| 702 | 742 |
/// |
| 703 |
/// Returns the running node (the target in this case) of the |
|
| 704 |
/// iterator |
|
| 705 |
Node runningNode(OutArcIt e) const {
|
|
| 706 |
return target(e); |
|
| 707 |
|
|
| 743 |
/// Returns the running node of the given incident edge iterator. |
|
| 744 |
Node runningNode(IncEdgeIt) const { return INVALID; }
|
|
| 708 | 745 |
|
| 709 |
/// \brief |
|
| 746 |
/// \brief The base node of the iterator. |
|
| 710 | 747 |
/// |
| 711 |
/// Returns the base node (the target in this case) of the iterator |
|
| 712 |
Node baseNode(InArcIt e) const {
|
|
| 713 |
return target(e); |
|
| 714 |
} |
|
| 715 |
/// |
|
| 748 |
/// Returns the base node of the given outgoing arc iterator |
|
| 749 |
/// (i.e. the source node of the corresponding arc). |
|
| 750 |
Node baseNode(OutArcIt) const { return INVALID; }
|
|
| 751 |
|
|
| 752 |
/// \brief The running node of the iterator. |
|
| 716 | 753 |
/// |
| 717 |
/// Returns the running node (the source in this case) of the |
|
| 718 |
/// iterator |
|
| 719 |
Node runningNode(InArcIt e) const {
|
|
| 720 |
return source(e); |
|
| 721 |
|
|
| 754 |
/// Returns the running node of the given outgoing arc iterator |
|
| 755 |
/// (i.e. the target node of the corresponding arc). |
|
| 756 |
Node runningNode(OutArcIt) const { return INVALID; }
|
|
| 722 | 757 |
|
| 723 |
/// \brief |
|
| 758 |
/// \brief The base node of the iterator. |
|
| 724 | 759 |
/// |
| 725 |
/// Returns the base node of the iterator |
|
| 726 |
Node baseNode(IncEdgeIt) const {
|
|
| 727 |
return INVALID; |
|
| 728 |
} |
|
| 760 |
/// Returns the base node of the given incomming arc iterator |
|
| 761 |
/// (i.e. the target node of the corresponding arc). |
|
| 762 |
Node baseNode(InArcIt) const { return INVALID; }
|
|
| 729 | 763 |
|
| 730 |
/// \brief |
|
| 764 |
/// \brief The running node of the iterator. |
|
| 731 | 765 |
/// |
| 732 |
/// Returns the running node of the iterator |
|
| 733 |
Node runningNode(IncEdgeIt) const {
|
|
| 734 |
return INVALID; |
|
| 735 |
} |
|
| 766 |
/// Returns the running node of the given incomming arc iterator |
|
| 767 |
/// (i.e. the source node of the corresponding arc). |
|
| 768 |
Node runningNode(InArcIt) const { return INVALID; }
|
|
| 736 | 769 |
|
| 737 | 770 |
template <typename _Graph> |
| 738 | 771 |
struct Constraints {
|
| 739 | 772 |
void constraints() {
|
| 773 |
checkConcept<BaseGraphComponent, _Graph>(); |
|
| 740 | 774 |
checkConcept<IterableGraphComponent<>, _Graph>(); |
| 741 | 775 |
checkConcept<IDableGraphComponent<>, _Graph>(); |
| 742 | 776 |
checkConcept<MappableGraphComponent<>, _Graph>(); |
| 743 | 777 |
} |
| 744 | 778 |
}; |
| 745 | 779 |
|
| 746 | 780 |
}; |
| 747 | 781 |
|
| 748 | 782 |
} |
| 749 | 783 |
|
| 750 | 784 |
} |
| 751 | 785 |
|
| 752 | 786 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
///\ingroup graph_concepts |
| 20 | 20 |
///\file |
| 21 | 21 |
///\brief The concept of graph components. |
| 22 | 22 |
|
| 23 |
|
|
| 24 |
#ifndef LEMON_CONCEPT_GRAPH_COMPONENTS_H |
|
| 25 |
# |
|
| 23 |
#ifndef LEMON_CONCEPTS_GRAPH_COMPONENTS_H |
|
| 24 |
#define LEMON_CONCEPTS_GRAPH_COMPONENTS_H |
|
| 26 | 25 |
|
| 27 | 26 |
#include <lemon/core.h> |
| 28 | 27 |
#include <lemon/concepts/maps.h> |
| 29 | 28 |
|
| 30 | 29 |
#include <lemon/bits/alteration_notifier.h> |
| 31 | 30 |
|
| 32 | 31 |
namespace lemon {
|
| 33 | 32 |
namespace concepts {
|
| 34 | 33 |
|
| 35 |
/// \brief |
|
| 34 |
/// \brief Concept class for \c Node, \c Arc and \c Edge types. |
|
| 36 | 35 |
/// |
| 37 |
/// This class describes the interface of Node and Arc (and Edge |
|
| 38 |
/// in undirected graphs) subtypes of graph types. |
|
| 36 |
/// This class describes the concept of \c Node, \c Arc and \c Edge |
|
| 37 |
/// subtypes of digraph and graph types. |
|
| 39 | 38 |
/// |
| 40 | 39 |
/// \note This class is a template class so that we can use it to |
| 41 |
/// create graph skeleton classes. The reason for this is than Node |
|
| 42 |
/// and Arc types should \em not derive from the same base class. |
|
| 43 |
/// For Node you should instantiate it with character 'n' and for Arc |
|
| 44 |
/// with 'a'. |
|
| 45 |
|
|
| 40 |
/// create graph skeleton classes. The reason for this is that \c Node |
|
| 41 |
/// and \c Arc (or \c Edge) types should \e not derive from the same |
|
| 42 |
/// base class. For \c Node you should instantiate it with character |
|
| 43 |
/// \c 'n', for \c Arc with \c 'a' and for \c Edge with \c 'e'. |
|
| 46 | 44 |
#ifndef DOXYGEN |
| 47 |
template <char |
|
| 45 |
template <char sel = '0'> |
|
| 48 | 46 |
#endif |
| 49 | 47 |
class GraphItem {
|
| 50 | 48 |
public: |
| 51 | 49 |
/// \brief Default constructor. |
| 52 | 50 |
/// |
| 51 |
/// Default constructor. |
|
| 53 | 52 |
/// \warning The default constructor is not required to set |
| 54 | 53 |
/// the item to some well-defined value. So you should consider it |
| 55 | 54 |
/// as uninitialized. |
| 56 | 55 |
GraphItem() {}
|
| 56 |
|
|
| 57 | 57 |
/// \brief Copy constructor. |
| 58 | 58 |
/// |
| 59 | 59 |
/// Copy constructor. |
| 60 |
GraphItem(const GraphItem &) {}
|
|
| 61 |
|
|
| 62 |
/// \brief Constructor for conversion from \c INVALID. |
|
| 60 | 63 |
/// |
| 61 |
GraphItem(const GraphItem &) {}
|
|
| 62 |
/// \brief Invalid constructor \& conversion. |
|
| 63 |
/// |
|
| 64 |
/// This constructor initializes the item to be invalid. |
|
| 64 |
/// Constructor for conversion from \c INVALID. |
|
| 65 |
/// It initializes the item to be invalid. |
|
| 65 | 66 |
/// \sa Invalid for more details. |
| 66 | 67 |
GraphItem(Invalid) {}
|
| 67 |
|
|
| 68 |
|
|
| 69 |
/// \brief Assignment operator. |
|
| 68 | 70 |
/// |
| 69 |
/// |
|
| 71 |
/// Assignment operator for the item. |
|
| 72 |
GraphItem& operator=(const GraphItem&) { return *this; }
|
|
| 73 |
|
|
| 74 |
/// \brief Assignment operator for INVALID. |
|
| 70 | 75 |
/// |
| 71 |
|
|
| 76 |
/// This operator makes the item invalid. |
|
| 77 |
GraphItem& operator=(Invalid) { return *this; }
|
|
| 78 |
|
|
| 72 | 79 |
/// \brief Equality operator. |
| 73 | 80 |
/// |
| 74 |
/// Two iterators are equal if and only if they represents the |
|
| 75 |
/// same node in the graph or both are invalid. |
|
| 76 |
|
|
| 81 |
/// Equality operator. |
|
| 82 |
bool operator==(const GraphItem&) const { return false; }
|
|
| 83 |
|
|
| 77 | 84 |
/// \brief Inequality operator. |
| 78 | 85 |
/// |
| 79 |
/// |
|
| 86 |
/// Inequality operator. |
|
| 87 |
bool operator!=(const GraphItem&) const { return false; }
|
|
| 88 |
|
|
| 89 |
/// \brief Ordering operator. |
|
| 80 | 90 |
/// |
| 81 |
bool operator!=(GraphItem) const { return false; }
|
|
| 82 |
|
|
| 83 |
/// |
|
| 91 |
/// This operator defines an ordering of the items. |
|
| 92 |
/// It makes possible to use graph item types as key types in |
|
| 93 |
/// associative containers (e.g. \c std::map). |
|
| 84 | 94 |
/// |
| 85 |
/// To allow the use of graph descriptors as key type in std::map or |
|
| 86 |
/// similar associative container we require this. |
|
| 87 |
/// |
|
| 88 |
/// \note This operator only have to define some strict ordering of |
|
| 95 |
/// \note This operator only has to define some strict ordering of |
|
| 89 | 96 |
/// the items; this order has nothing to do with the iteration |
| 90 | 97 |
/// ordering of the items. |
| 91 |
bool operator<(GraphItem) const { return false; }
|
|
| 98 |
bool operator<(const GraphItem&) const { return false; }
|
|
| 92 | 99 |
|
| 93 | 100 |
template<typename _GraphItem> |
| 94 | 101 |
struct Constraints {
|
| 95 | 102 |
void constraints() {
|
| 96 | 103 |
_GraphItem i1; |
| 104 |
i1=INVALID; |
|
| 97 | 105 |
_GraphItem i2 = i1; |
| 98 | 106 |
_GraphItem i3 = INVALID; |
| 99 | 107 |
|
| 100 | 108 |
i1 = i2 = i3; |
| 101 | 109 |
|
| 102 | 110 |
bool b; |
| 103 |
// b = (ia == ib) && (ia != ib) && (ia < ib); |
|
| 104 | 111 |
b = (ia == ib) && (ia != ib); |
| 105 | 112 |
b = (ia == INVALID) && (ib != INVALID); |
| 106 | 113 |
b = (ia < ib); |
| 107 | 114 |
} |
| 108 | 115 |
|
| 109 | 116 |
const _GraphItem &ia; |
| 110 | 117 |
const _GraphItem &ib; |
| 111 | 118 |
}; |
| 112 | 119 |
}; |
| 113 | 120 |
|
| 114 |
/// \brief |
|
| 121 |
/// \brief Base skeleton class for directed graphs. |
|
| 115 | 122 |
/// |
| 116 |
/// This class provides the minimal set of features needed for a |
|
| 117 |
/// directed graph structure. All digraph concepts have to be |
|
| 118 |
/// conform to this base directed graph. It just provides types |
|
| 119 |
/// for nodes and arcs and functions to get the source and the |
|
| 120 |
/// |
|
| 123 |
/// This class describes the base interface of directed graph types. |
|
| 124 |
/// All digraph %concepts have to conform to this class. |
|
| 125 |
/// It just provides types for nodes and arcs and functions |
|
| 126 |
/// to get the source and the target nodes of arcs. |
|
| 121 | 127 |
class BaseDigraphComponent {
|
| 122 | 128 |
public: |
| 123 | 129 |
|
| 124 | 130 |
typedef BaseDigraphComponent Digraph; |
| 125 | 131 |
|
| 126 | 132 |
/// \brief Node class of the digraph. |
| 127 | 133 |
/// |
| 128 |
/// This class represents the Nodes of the digraph. |
|
| 129 |
/// |
|
| 134 |
/// This class represents the nodes of the digraph. |
|
| 130 | 135 |
typedef GraphItem<'n'> Node; |
| 131 | 136 |
|
| 132 | 137 |
/// \brief Arc class of the digraph. |
| 133 | 138 |
/// |
| 134 |
/// This class represents the |
|
| 139 |
/// This class represents the arcs of the digraph. |
|
| 140 |
typedef GraphItem<'a'> Arc; |
|
| 141 |
|
|
| 142 |
/// \brief Return the source node of an arc. |
|
| 135 | 143 |
/// |
| 136 |
|
|
| 144 |
/// This function returns the source node of an arc. |
|
| 145 |
Node source(const Arc&) const { return INVALID; }
|
|
| 137 | 146 |
|
| 138 |
/// \brief |
|
| 147 |
/// \brief Return the target node of an arc. |
|
| 139 | 148 |
/// |
| 140 |
/// |
|
| 149 |
/// This function returns the target node of an arc. |
|
| 150 |
Node target(const Arc&) const { return INVALID; }
|
|
| 151 |
|
|
| 152 |
/// \brief Return the opposite node on the given arc. |
|
| 141 | 153 |
/// |
| 142 |
Node target(const Arc&) const { return INVALID;}
|
|
| 143 |
|
|
| 144 |
/// \brief Gives back the source node of an arc. |
|
| 145 |
/// |
|
| 146 |
/// Gives back the source node of an arc. |
|
| 147 |
/// |
|
| 148 |
Node source(const Arc&) const { return INVALID;}
|
|
| 149 |
|
|
| 150 |
/// \brief Gives back the opposite node on the given arc. |
|
| 151 |
/// |
|
| 152 |
/// |
|
| 154 |
/// This function returns the opposite node on the given arc. |
|
| 153 | 155 |
Node oppositeNode(const Node&, const Arc&) const {
|
| 154 | 156 |
return INVALID; |
| 155 | 157 |
} |
| 156 | 158 |
|
| 157 | 159 |
template <typename _Digraph> |
| 158 | 160 |
struct Constraints {
|
| 159 | 161 |
typedef typename _Digraph::Node Node; |
| 160 | 162 |
typedef typename _Digraph::Arc Arc; |
| 161 | 163 |
|
| 162 | 164 |
void constraints() {
|
| 163 | 165 |
checkConcept<GraphItem<'n'>, Node>(); |
| 164 | 166 |
checkConcept<GraphItem<'a'>, Arc>(); |
| 165 | 167 |
{
|
| 166 | 168 |
Node n; |
| 167 | 169 |
Arc e(INVALID); |
| 168 | 170 |
n = digraph.source(e); |
| 169 | 171 |
n = digraph.target(e); |
| 170 | 172 |
n = digraph.oppositeNode(n, e); |
| 171 | 173 |
} |
| 172 | 174 |
} |
| 173 | 175 |
|
| 174 | 176 |
const _Digraph& digraph; |
| 175 | 177 |
}; |
| 176 | 178 |
}; |
| 177 | 179 |
|
| 178 |
/// \brief |
|
| 180 |
/// \brief Base skeleton class for undirected graphs. |
|
| 179 | 181 |
/// |
| 180 |
/// This class provides the minimal set of features needed for an |
|
| 181 |
/// undirected graph structure. All undirected graph concepts have |
|
| 182 |
/// to be conform to this base graph. It just provides types for |
|
| 183 |
/// nodes, arcs and edges and functions to get the |
|
| 184 |
/// source and the target of the arcs and edges, |
|
| 185 |
/// conversion from arcs to edges and function to get |
|
| 186 |
/// |
|
| 182 |
/// This class describes the base interface of undirected graph types. |
|
| 183 |
/// All graph %concepts have to conform to this class. |
|
| 184 |
/// It extends the interface of \ref BaseDigraphComponent with an |
|
| 185 |
/// \c Edge type and functions to get the end nodes of edges, |
|
| 186 |
/// to convert from arcs to edges and to get both direction of edges. |
|
| 187 | 187 |
class BaseGraphComponent : public BaseDigraphComponent {
|
| 188 | 188 |
public: |
| 189 |
|
|
| 190 |
typedef BaseGraphComponent Graph; |
|
| 191 |
|
|
| 189 | 192 |
typedef BaseDigraphComponent::Node Node; |
| 190 | 193 |
typedef BaseDigraphComponent::Arc Arc; |
| 191 |
|
|
| 194 |
|
|
| 195 |
/// \brief Undirected edge class of the graph. |
|
| 192 | 196 |
/// |
| 193 |
/// This class represents the edges of the graph. |
|
| 194 |
/// The undirected graphs can be used as a directed graph which |
|
| 195 |
/// for each arc contains the opposite arc too so the graph is |
|
| 196 |
/// bidirected. The edge represents two opposite |
|
| 197 |
/// directed arcs. |
|
| 198 |
class Edge : public GraphItem<'u'> {
|
|
| 197 |
/// This class represents the undirected edges of the graph. |
|
| 198 |
/// Undirected graphs can be used as directed graphs, each edge is |
|
| 199 |
/// represented by two opposite directed arcs. |
|
| 200 |
class Edge : public GraphItem<'e'> {
|
|
| 201 |
typedef GraphItem<'e'> Parent; |
|
| 202 |
|
|
| 199 | 203 |
public: |
| 200 |
typedef GraphItem<'u'> Parent; |
|
| 201 | 204 |
/// \brief Default constructor. |
| 202 | 205 |
/// |
| 206 |
/// Default constructor. |
|
| 203 | 207 |
/// \warning The default constructor is not required to set |
| 204 | 208 |
/// the item to some well-defined value. So you should consider it |
| 205 | 209 |
/// as uninitialized. |
| 206 | 210 |
Edge() {}
|
| 211 |
|
|
| 207 | 212 |
/// \brief Copy constructor. |
| 208 | 213 |
/// |
| 209 | 214 |
/// Copy constructor. |
| 215 |
Edge(const Edge &) : Parent() {}
|
|
| 216 |
|
|
| 217 |
/// \brief Constructor for conversion from \c INVALID. |
|
| 210 | 218 |
/// |
| 211 |
Edge(const Edge &) : Parent() {}
|
|
| 212 |
/// \brief Invalid constructor \& conversion. |
|
| 213 |
/// |
|
| 214 |
/// This constructor initializes the item to be invalid. |
|
| 219 |
/// Constructor for conversion from \c INVALID. |
|
| 220 |
/// It initializes the item to be invalid. |
|
| 215 | 221 |
/// \sa Invalid for more details. |
| 216 | 222 |
Edge(Invalid) {}
|
| 217 |
|
|
| 223 |
|
|
| 224 |
/// \brief Constructor for conversion from an arc. |
|
| 218 | 225 |
/// |
| 226 |
/// Constructor for conversion from an arc. |
|
| 219 | 227 |
/// Besides the core graph item functionality each arc should |
| 220 | 228 |
/// be convertible to the represented edge. |
| 221 | 229 |
Edge(const Arc&) {}
|
| 222 |
/// \brief Assign arc to edge. |
|
| 223 |
/// |
|
| 224 |
/// Besides the core graph item functionality each arc should |
|
| 225 |
/// be convertible to the represented edge. |
|
| 226 |
Edge& operator=(const Arc&) { return *this; }
|
|
| 227 |
}; |
|
| 230 |
}; |
|
| 228 | 231 |
|
| 229 |
/// \brief |
|
| 232 |
/// \brief Return one end node of an edge. |
|
| 233 |
/// |
|
| 234 |
/// This function returns one end node of an edge. |
|
| 235 |
Node u(const Edge&) const { return INVALID; }
|
|
| 236 |
|
|
| 237 |
/// \brief Return the other end node of an edge. |
|
| 238 |
/// |
|
| 239 |
/// This function returns the other end node of an edge. |
|
| 240 |
Node v(const Edge&) const { return INVALID; }
|
|
| 241 |
|
|
| 242 |
/// \brief Return a directed arc related to an edge. |
|
| 243 |
/// |
|
| 244 |
/// This function returns a directed arc from its direction and the |
|
| 245 |
/// represented edge. |
|
| 246 |
Arc direct(const Edge&, bool) const { return INVALID; }
|
|
| 247 |
|
|
| 248 |
/// \brief Return a directed arc related to an edge. |
|
| 249 |
/// |
|
| 250 |
/// This function returns a directed arc from its source node and the |
|
| 251 |
/// represented edge. |
|
| 252 |
Arc direct(const Edge&, const Node&) const { return INVALID; }
|
|
| 253 |
|
|
| 254 |
/// \brief Return the direction of the arc. |
|
| 230 | 255 |
/// |
| 231 | 256 |
/// Returns the direction of the arc. Each arc represents an |
| 232 | 257 |
/// edge with a direction. It gives back the |
| 233 | 258 |
/// direction. |
| 234 | 259 |
bool direction(const Arc&) const { return true; }
|
| 235 | 260 |
|
| 236 |
/// \brief |
|
| 261 |
/// \brief Return the opposite arc. |
|
| 237 | 262 |
/// |
| 238 |
/// Returns the directed arc from its direction and the |
|
| 239 |
/// represented edge. |
|
| 240 |
Arc direct(const Edge&, bool) const { return INVALID;}
|
|
| 241 |
|
|
| 242 |
/// \brief Returns the directed arc. |
|
| 243 |
/// |
|
| 244 |
/// Returns the directed arc from its source and the |
|
| 245 |
/// represented edge. |
|
| 246 |
Arc direct(const Edge&, const Node&) const { return INVALID;}
|
|
| 247 |
|
|
| 248 |
/// \brief Returns the opposite arc. |
|
| 249 |
/// |
|
| 250 |
/// Returns the opposite arc. It is the arc representing the |
|
| 251 |
/// same edge and has opposite direction. |
|
| 252 |
Arc oppositeArc(const Arc&) const { return INVALID;}
|
|
| 253 |
|
|
| 254 |
/// \brief Gives back one ending of an edge. |
|
| 255 |
/// |
|
| 256 |
/// Gives back one ending of an edge. |
|
| 257 |
Node u(const Edge&) const { return INVALID;}
|
|
| 258 |
|
|
| 259 |
/// \brief Gives back the other ending of an edge. |
|
| 260 |
/// |
|
| 261 |
/// Gives back the other ending of an edge. |
|
| 262 |
|
|
| 263 |
/// This function returns the opposite arc, i.e. the arc representing |
|
| 264 |
/// the same edge and has opposite direction. |
|
| 265 |
Arc oppositeArc(const Arc&) const { return INVALID; }
|
|
| 263 | 266 |
|
| 264 | 267 |
template <typename _Graph> |
| 265 | 268 |
struct Constraints {
|
| 266 | 269 |
typedef typename _Graph::Node Node; |
| 267 | 270 |
typedef typename _Graph::Arc Arc; |
| 268 | 271 |
typedef typename _Graph::Edge Edge; |
| 269 | 272 |
|
| 270 | 273 |
void constraints() {
|
| 271 | 274 |
checkConcept<BaseDigraphComponent, _Graph>(); |
| 272 |
checkConcept<GraphItem<' |
|
| 275 |
checkConcept<GraphItem<'e'>, Edge>(); |
|
| 273 | 276 |
{
|
| 274 | 277 |
Node n; |
| 275 | 278 |
Edge ue(INVALID); |
| 276 | 279 |
Arc e; |
| 277 | 280 |
n = graph.u(ue); |
| 278 | 281 |
n = graph.v(ue); |
| 279 | 282 |
e = graph.direct(ue, true); |
| 283 |
e = graph.direct(ue, false); |
|
| 280 | 284 |
e = graph.direct(ue, n); |
| 281 | 285 |
e = graph.oppositeArc(e); |
| 282 | 286 |
ue = e; |
| 283 | 287 |
bool d = graph.direction(e); |
| 284 | 288 |
ignore_unused_variable_warning(d); |
| 285 | 289 |
} |
| 286 | 290 |
} |
| 287 | 291 |
|
| 288 | 292 |
const _Graph& graph; |
| 289 | 293 |
}; |
| 290 | 294 |
|
| 291 | 295 |
}; |
| 292 | 296 |
|
| 293 |
/// \brief |
|
| 297 |
/// \brief Skeleton class for \e idable directed graphs. |
|
| 294 | 298 |
/// |
| 295 |
/// This class provides beside the core digraph features |
|
| 296 |
/// core id functions for the digraph structure. |
|
| 297 |
/// The most of the base digraphs should be conform to this concept. |
|
| 298 |
/// The id's are unique and immutable. |
|
| 299 |
template <typename _Base = BaseDigraphComponent> |
|
| 300 |
class IDableDigraphComponent : public _Base {
|
|
| 299 |
/// This class describes the interface of \e idable directed graphs. |
|
| 300 |
/// It extends \ref BaseDigraphComponent with the core ID functions. |
|
| 301 |
/// The ids of the items must be unique and immutable. |
|
| 302 |
/// This concept is part of the Digraph concept. |
|
| 303 |
template <typename BAS = BaseDigraphComponent> |
|
| 304 |
class IDableDigraphComponent : public BAS {
|
|
| 301 | 305 |
public: |
| 302 | 306 |
|
| 303 |
typedef |
|
| 307 |
typedef BAS Base; |
|
| 304 | 308 |
typedef typename Base::Node Node; |
| 305 | 309 |
typedef typename Base::Arc Arc; |
| 306 | 310 |
|
| 307 |
/// \brief |
|
| 311 |
/// \brief Return a unique integer id for the given node. |
|
| 308 | 312 |
/// |
| 309 |
/// |
|
| 313 |
/// This function returns a unique integer id for the given node. |
|
| 314 |
int id(const Node&) const { return -1; }
|
|
| 315 |
|
|
| 316 |
/// \brief Return the node by its unique id. |
|
| 310 | 317 |
/// |
| 311 |
|
|
| 318 |
/// This function returns the node by its unique id. |
|
| 319 |
/// If the digraph does not contain a node with the given id, |
|
| 320 |
/// then the result of the function is undefined. |
|
| 321 |
Node nodeFromId(int) const { return INVALID; }
|
|
| 312 | 322 |
|
| 313 |
/// \brief |
|
| 323 |
/// \brief Return a unique integer id for the given arc. |
|
| 314 | 324 |
/// |
| 315 |
/// Gives back the node by the unique id. |
|
| 316 |
/// If the digraph does not contain node with the given id |
|
| 317 |
/// then the result of the function is undetermined. |
|
| 318 |
Node nodeFromId(int) const { return INVALID;}
|
|
| 325 |
/// This function returns a unique integer id for the given arc. |
|
| 326 |
int id(const Arc&) const { return -1; }
|
|
| 319 | 327 |
|
| 320 |
/// \brief |
|
| 328 |
/// \brief Return the arc by its unique id. |
|
| 321 | 329 |
/// |
| 322 |
/// |
|
| 330 |
/// This function returns the arc by its unique id. |
|
| 331 |
/// If the digraph does not contain an arc with the given id, |
|
| 332 |
/// then the result of the function is undefined. |
|
| 333 |
Arc arcFromId(int) const { return INVALID; }
|
|
| 334 |
|
|
| 335 |
/// \brief Return an integer greater or equal to the maximum |
|
| 336 |
/// node id. |
|
| 323 | 337 |
/// |
| 324 |
|
|
| 338 |
/// This function returns an integer greater or equal to the |
|
| 339 |
/// maximum node id. |
|
| 340 |
int maxNodeId() const { return -1; }
|
|
| 325 | 341 |
|
| 326 |
/// \brief |
|
| 342 |
/// \brief Return an integer greater or equal to the maximum |
|
| 343 |
/// arc id. |
|
| 327 | 344 |
/// |
| 328 |
/// Gives back the arc by the unique id. |
|
| 329 |
/// If the digraph does not contain arc with the given id |
|
| 330 |
/// then the result of the function is undetermined. |
|
| 331 |
Arc arcFromId(int) const { return INVALID;}
|
|
| 332 |
|
|
| 333 |
/// \brief Gives back an integer greater or equal to the maximum |
|
| 334 |
/// Node id. |
|
| 335 |
/// |
|
| 336 |
/// Gives back an integer greater or equal to the maximum Node |
|
| 337 |
/// id. |
|
| 338 |
int maxNodeId() const { return -1;}
|
|
| 339 |
|
|
| 340 |
/// \brief Gives back an integer greater or equal to the maximum |
|
| 341 |
/// Arc id. |
|
| 342 |
/// |
|
| 343 |
/// Gives back an integer greater or equal to the maximum Arc |
|
| 344 |
/// id. |
|
| 345 |
int maxArcId() const { return -1;}
|
|
| 345 |
/// This function returns an integer greater or equal to the |
|
| 346 |
/// maximum arc id. |
|
| 347 |
int maxArcId() const { return -1; }
|
|
| 346 | 348 |
|
| 347 | 349 |
template <typename _Digraph> |
| 348 | 350 |
struct Constraints {
|
| 349 | 351 |
|
| 350 | 352 |
void constraints() {
|
| 351 | 353 |
checkConcept<Base, _Digraph >(); |
| 352 | 354 |
typename _Digraph::Node node; |
| 355 |
node=INVALID; |
|
| 353 | 356 |
int nid = digraph.id(node); |
| 354 | 357 |
nid = digraph.id(node); |
| 355 | 358 |
node = digraph.nodeFromId(nid); |
| 356 | 359 |
typename _Digraph::Arc arc; |
| 360 |
arc=INVALID; |
|
| 357 | 361 |
int eid = digraph.id(arc); |
| 358 | 362 |
eid = digraph.id(arc); |
| 359 | 363 |
arc = digraph.arcFromId(eid); |
| 360 | 364 |
|
| 361 | 365 |
nid = digraph.maxNodeId(); |
| 362 | 366 |
ignore_unused_variable_warning(nid); |
| 363 | 367 |
eid = digraph.maxArcId(); |
| 364 | 368 |
ignore_unused_variable_warning(eid); |
| 365 | 369 |
} |
| 366 | 370 |
|
| 367 | 371 |
const _Digraph& digraph; |
| 368 | 372 |
}; |
| 369 | 373 |
}; |
| 370 | 374 |
|
| 371 |
/// \brief |
|
| 375 |
/// \brief Skeleton class for \e idable undirected graphs. |
|
| 372 | 376 |
/// |
| 373 |
/// This class provides beside the core undirected graph features |
|
| 374 |
/// core id functions for the undirected graph structure. The |
|
| 375 |
/// most of the base undirected graphs should be conform to this |
|
| 376 |
/// concept. The id's are unique and immutable. |
|
| 377 |
template <typename _Base = BaseGraphComponent> |
|
| 378 |
class IDableGraphComponent : public IDableDigraphComponent<_Base> {
|
|
| 377 |
/// This class describes the interface of \e idable undirected |
|
| 378 |
/// graphs. It extends \ref IDableDigraphComponent with the core ID |
|
| 379 |
/// functions of undirected graphs. |
|
| 380 |
/// The ids of the items must be unique and immutable. |
|
| 381 |
/// This concept is part of the Graph concept. |
|
| 382 |
template <typename BAS = BaseGraphComponent> |
|
| 383 |
class IDableGraphComponent : public IDableDigraphComponent<BAS> {
|
|
| 379 | 384 |
public: |
| 380 | 385 |
|
| 381 |
typedef |
|
| 386 |
typedef BAS Base; |
|
| 382 | 387 |
typedef typename Base::Edge Edge; |
| 383 | 388 |
|
| 384 |
using IDableDigraphComponent< |
|
| 389 |
using IDableDigraphComponent<Base>::id; |
|
| 385 | 390 |
|
| 386 |
/// \brief |
|
| 391 |
/// \brief Return a unique integer id for the given edge. |
|
| 387 | 392 |
/// |
| 388 |
/// |
|
| 393 |
/// This function returns a unique integer id for the given edge. |
|
| 394 |
int id(const Edge&) const { return -1; }
|
|
| 395 |
|
|
| 396 |
/// \brief Return the edge by its unique id. |
|
| 389 | 397 |
/// |
| 390 |
|
|
| 398 |
/// This function returns the edge by its unique id. |
|
| 399 |
/// If the graph does not contain an edge with the given id, |
|
| 400 |
/// then the result of the function is undefined. |
|
| 401 |
Edge edgeFromId(int) const { return INVALID; }
|
|
| 391 | 402 |
|
| 392 |
/// \brief |
|
| 403 |
/// \brief Return an integer greater or equal to the maximum |
|
| 404 |
/// edge id. |
|
| 393 | 405 |
/// |
| 394 |
/// Gives back the edge by the unique id. If the |
|
| 395 |
/// graph does not contain arc with the given id then the |
|
| 396 |
/// result of the function is undetermined. |
|
| 397 |
Edge edgeFromId(int) const { return INVALID;}
|
|
| 398 |
|
|
| 399 |
/// \brief Gives back an integer greater or equal to the maximum |
|
| 400 |
/// Edge id. |
|
| 401 |
/// |
|
| 402 |
/// Gives back an integer greater or equal to the maximum Edge |
|
| 403 |
/// id. |
|
| 404 |
|
|
| 406 |
/// This function returns an integer greater or equal to the |
|
| 407 |
/// maximum edge id. |
|
| 408 |
int maxEdgeId() const { return -1; }
|
|
| 405 | 409 |
|
| 406 | 410 |
template <typename _Graph> |
| 407 | 411 |
struct Constraints {
|
| 408 | 412 |
|
| 409 | 413 |
void constraints() {
|
| 410 |
checkConcept<Base, _Graph >(); |
|
| 411 | 414 |
checkConcept<IDableDigraphComponent<Base>, _Graph >(); |
| 412 | 415 |
typename _Graph::Edge edge; |
| 413 | 416 |
int ueid = graph.id(edge); |
| 414 | 417 |
ueid = graph.id(edge); |
| 415 | 418 |
edge = graph.edgeFromId(ueid); |
| 416 | 419 |
ueid = graph.maxEdgeId(); |
| 417 | 420 |
ignore_unused_variable_warning(ueid); |
| 418 | 421 |
} |
| 419 | 422 |
|
| 420 | 423 |
const _Graph& graph; |
| 421 | 424 |
}; |
| 422 | 425 |
}; |
| 423 | 426 |
|
| 424 |
/// \brief |
|
| 427 |
/// \brief Concept class for \c NodeIt, \c ArcIt and \c EdgeIt types. |
|
| 425 | 428 |
/// |
| 426 |
/// Skeleton class for graph NodeIt and ArcIt. |
|
| 427 |
/// |
|
| 428 |
template <typename _Graph, typename _Item> |
|
| 429 |
class GraphItemIt : public _Item {
|
|
| 429 |
/// This class describes the concept of \c NodeIt, \c ArcIt and |
|
| 430 |
/// \c EdgeIt subtypes of digraph and graph types. |
|
| 431 |
template <typename GR, typename Item> |
|
| 432 |
class GraphItemIt : public Item {
|
|
| 430 | 433 |
public: |
| 431 | 434 |
/// \brief Default constructor. |
| 432 | 435 |
/// |
| 433 |
/// @warning The default constructor sets the iterator |
|
| 434 |
/// to an undefined value. |
|
| 436 |
/// Default constructor. |
|
| 437 |
/// \warning The default constructor is not required to set |
|
| 438 |
/// the iterator to some well-defined value. So you should consider it |
|
| 439 |
/// as uninitialized. |
|
| 435 | 440 |
GraphItemIt() {}
|
| 441 |
|
|
| 436 | 442 |
/// \brief Copy constructor. |
| 437 | 443 |
/// |
| 438 | 444 |
/// Copy constructor. |
| 445 |
GraphItemIt(const GraphItemIt& it) : Item(it) {}
|
|
| 446 |
|
|
| 447 |
/// \brief Constructor that sets the iterator to the first item. |
|
| 439 | 448 |
/// |
| 440 |
GraphItemIt(const GraphItemIt& ) {}
|
|
| 441 |
/// \brief Sets the iterator to the first item. |
|
| 449 |
/// Constructor that sets the iterator to the first item. |
|
| 450 |
explicit GraphItemIt(const GR&) {}
|
|
| 451 |
|
|
| 452 |
/// \brief Constructor for conversion from \c INVALID. |
|
| 442 | 453 |
/// |
| 443 |
/// Sets the iterator to the first item of \c the graph. |
|
| 444 |
/// |
|
| 445 |
explicit GraphItemIt(const _Graph&) {}
|
|
| 446 |
/// \brief Invalid constructor \& conversion. |
|
| 447 |
/// |
|
| 448 |
/// This constructor initializes the item to be invalid. |
|
| 454 |
/// Constructor for conversion from \c INVALID. |
|
| 455 |
/// It initializes the iterator to be invalid. |
|
| 449 | 456 |
/// \sa Invalid for more details. |
| 450 | 457 |
GraphItemIt(Invalid) {}
|
| 451 |
|
|
| 458 |
|
|
| 459 |
/// \brief Assignment operator. |
|
| 452 | 460 |
/// |
| 453 |
/// |
|
| 461 |
/// Assignment operator for the iterator. |
|
| 462 |
GraphItemIt& operator=(const GraphItemIt&) { return *this; }
|
|
| 463 |
|
|
| 464 |
/// \brief Increment the iterator. |
|
| 454 | 465 |
/// |
| 455 |
GraphItemIt& operator=(const GraphItemIt&) { return *this; }
|
|
| 456 |
/// \brief Next item. |
|
| 457 |
/// |
|
| 458 |
/// Assign the iterator to the next item. |
|
| 459 |
/// |
|
| 466 |
/// This operator increments the iterator, i.e. assigns it to the |
|
| 467 |
/// next item. |
|
| 460 | 468 |
GraphItemIt& operator++() { return *this; }
|
| 469 |
|
|
| 461 | 470 |
/// \brief Equality operator |
| 462 | 471 |
/// |
| 472 |
/// Equality operator. |
|
| 463 | 473 |
/// Two iterators are equal if and only if they point to the |
| 464 | 474 |
/// same object or both are invalid. |
| 465 | 475 |
bool operator==(const GraphItemIt&) const { return true;}
|
| 476 |
|
|
| 466 | 477 |
/// \brief Inequality operator |
| 467 | 478 |
/// |
| 468 |
/// \sa operator==(Node n) |
|
| 469 |
/// |
|
| 479 |
/// Inequality operator. |
|
| 480 |
/// Two iterators are equal if and only if they point to the |
|
| 481 |
/// same object or both are invalid. |
|
| 470 | 482 |
bool operator!=(const GraphItemIt&) const { return true;}
|
| 471 | 483 |
|
| 472 | 484 |
template<typename _GraphItemIt> |
| 473 | 485 |
struct Constraints {
|
| 474 | 486 |
void constraints() {
|
| 487 |
checkConcept<GraphItem<>, _GraphItemIt>(); |
|
| 475 | 488 |
_GraphItemIt it1(g); |
| 476 | 489 |
_GraphItemIt it2; |
| 490 |
_GraphItemIt it3 = it1; |
|
| 491 |
_GraphItemIt it4 = INVALID; |
|
| 477 | 492 |
|
| 478 | 493 |
it2 = ++it1; |
| 479 | 494 |
++it2 = it1; |
| 480 | 495 |
++(++it1); |
| 481 | 496 |
|
| 482 |
|
|
| 497 |
Item bi = it1; |
|
| 483 | 498 |
bi = it2; |
| 484 | 499 |
} |
| 485 |
|
|
| 500 |
const GR& g; |
|
| 486 | 501 |
}; |
| 487 | 502 |
}; |
| 488 | 503 |
|
| 489 |
/// \brief |
|
| 504 |
/// \brief Concept class for \c InArcIt, \c OutArcIt and |
|
| 505 |
/// \c IncEdgeIt types. |
|
| 490 | 506 |
/// |
| 491 |
/// \note Because InArcIt and OutArcIt may not inherit from the same |
|
| 492 |
/// base class, the _selector is a additional template parameter. For |
|
| 493 |
/// InArcIt you should instantiate it with character 'i' and for |
|
| 494 |
/// OutArcIt with 'o'. |
|
| 495 |
template <typename _Graph, |
|
| 496 |
typename _Item = typename _Graph::Arc, |
|
| 497 |
typename _Base = typename _Graph::Node, |
|
| 498 |
char _selector = '0'> |
|
| 499 |
class |
|
| 507 |
/// This class describes the concept of \c InArcIt, \c OutArcIt |
|
| 508 |
/// and \c IncEdgeIt subtypes of digraph and graph types. |
|
| 509 |
/// |
|
| 510 |
/// \note Since these iterator classes do not inherit from the same |
|
| 511 |
/// base class, there is an additional template parameter (selector) |
|
| 512 |
/// \c sel. For \c InArcIt you should instantiate it with character |
|
| 513 |
/// \c 'i', for \c OutArcIt with \c 'o' and for \c IncEdgeIt with \c 'e'. |
|
| 514 |
template <typename GR, |
|
| 515 |
typename Item = typename GR::Arc, |
|
| 516 |
typename Base = typename GR::Node, |
|
| 517 |
char sel = '0'> |
|
| 518 |
class GraphIncIt : public Item {
|
|
| 500 | 519 |
public: |
| 501 | 520 |
/// \brief Default constructor. |
| 502 | 521 |
/// |
| 503 |
/// @warning The default constructor sets the iterator |
|
| 504 |
/// to an undefined value. |
|
| 522 |
/// Default constructor. |
|
| 523 |
/// \warning The default constructor is not required to set |
|
| 524 |
/// the iterator to some well-defined value. So you should consider it |
|
| 525 |
/// as uninitialized. |
|
| 505 | 526 |
GraphIncIt() {}
|
| 527 |
|
|
| 506 | 528 |
/// \brief Copy constructor. |
| 507 | 529 |
/// |
| 508 | 530 |
/// Copy constructor. |
| 531 |
GraphIncIt(const GraphIncIt& it) : Item(it) {}
|
|
| 532 |
|
|
| 533 |
/// \brief Constructor that sets the iterator to the first |
|
| 534 |
/// incoming or outgoing arc. |
|
| 509 | 535 |
/// |
| 510 |
GraphIncIt(GraphIncIt const& gi) : _Item(gi) {}
|
|
| 511 |
/// \brief Sets the iterator to the first arc incoming into or outgoing |
|
| 512 |
/// |
|
| 536 |
/// Constructor that sets the iterator to the first arc |
|
| 537 |
/// incoming to or outgoing from the given node. |
|
| 538 |
explicit GraphIncIt(const GR&, const Base&) {}
|
|
| 539 |
|
|
| 540 |
/// \brief Constructor for conversion from \c INVALID. |
|
| 513 | 541 |
/// |
| 514 |
/// Sets the iterator to the first arc incoming into or outgoing |
|
| 515 |
/// from the node. |
|
| 516 |
/// |
|
| 517 |
explicit GraphIncIt(const _Graph&, const _Base&) {}
|
|
| 518 |
/// \brief Invalid constructor \& conversion. |
|
| 519 |
/// |
|
| 520 |
/// |
|
| 542 |
/// Constructor for conversion from \c INVALID. |
|
| 543 |
/// It initializes the iterator to be invalid. |
|
| 521 | 544 |
/// \sa Invalid for more details. |
| 522 | 545 |
GraphIncIt(Invalid) {}
|
| 523 |
|
|
| 546 |
|
|
| 547 |
/// \brief Assignment operator. |
|
| 524 | 548 |
/// |
| 525 |
/// |
|
| 549 |
/// Assignment operator for the iterator. |
|
| 550 |
GraphIncIt& operator=(const GraphIncIt&) { return *this; }
|
|
| 551 |
|
|
| 552 |
/// \brief Increment the iterator. |
|
| 526 | 553 |
/// |
| 527 |
GraphIncIt& operator=(GraphIncIt const&) { return *this; }
|
|
| 528 |
/// \brief Next item. |
|
| 529 |
/// |
|
| 530 |
/// Assign the iterator to the next item. |
|
| 531 |
/// |
|
| 554 |
/// This operator increments the iterator, i.e. assigns it to the |
|
| 555 |
/// next arc incoming to or outgoing from the given node. |
|
| 532 | 556 |
GraphIncIt& operator++() { return *this; }
|
| 533 | 557 |
|
| 534 | 558 |
/// \brief Equality operator |
| 535 | 559 |
/// |
| 560 |
/// Equality operator. |
|
| 536 | 561 |
/// Two iterators are equal if and only if they point to the |
| 537 | 562 |
/// same object or both are invalid. |
| 538 | 563 |
bool operator==(const GraphIncIt&) const { return true;}
|
| 539 | 564 |
|
| 540 | 565 |
/// \brief Inequality operator |
| 541 | 566 |
/// |
| 542 |
/// \sa operator==(Node n) |
|
| 543 |
/// |
|
| 567 |
/// Inequality operator. |
|
| 568 |
/// Two iterators are equal if and only if they point to the |
|
| 569 |
/// same object or both are invalid. |
|
| 544 | 570 |
bool operator!=(const GraphIncIt&) const { return true;}
|
| 545 | 571 |
|
| 546 | 572 |
template <typename _GraphIncIt> |
| 547 | 573 |
struct Constraints {
|
| 548 | 574 |
void constraints() {
|
| 549 |
checkConcept<GraphItem< |
|
| 575 |
checkConcept<GraphItem<sel>, _GraphIncIt>(); |
|
| 550 | 576 |
_GraphIncIt it1(graph, node); |
| 551 | 577 |
_GraphIncIt it2; |
| 578 |
_GraphIncIt it3 = it1; |
|
| 579 |
_GraphIncIt it4 = INVALID; |
|
| 552 | 580 |
|
| 553 | 581 |
it2 = ++it1; |
| 554 | 582 |
++it2 = it1; |
| 555 | 583 |
++(++it1); |
| 556 |
|
|
| 584 |
Item e = it1; |
|
| 557 | 585 |
e = it2; |
| 558 |
|
|
| 559 | 586 |
} |
| 560 |
|
|
| 561 |
_Item arc; |
|
| 562 |
_Base node; |
|
| 563 |
_Graph graph; |
|
| 564 |
|
|
| 587 |
const Base& node; |
|
| 588 |
const GR& graph; |
|
| 565 | 589 |
}; |
| 566 | 590 |
}; |
| 567 | 591 |
|
| 568 |
|
|
| 569 |
/// \brief An empty iterable digraph class. |
|
| 592 |
/// \brief Skeleton class for iterable directed graphs. |
|
| 570 | 593 |
/// |
| 571 |
/// This class provides beside the core digraph features |
|
| 572 |
/// iterator based iterable interface for the digraph structure. |
|
| 594 |
/// This class describes the interface of iterable directed |
|
| 595 |
/// graphs. It extends \ref BaseDigraphComponent with the core |
|
| 596 |
/// iterable interface. |
|
| 573 | 597 |
/// This concept is part of the Digraph concept. |
| 574 |
template <typename _Base = BaseDigraphComponent> |
|
| 575 |
class IterableDigraphComponent : public _Base {
|
|
| 598 |
template <typename BAS = BaseDigraphComponent> |
|
| 599 |
class IterableDigraphComponent : public BAS {
|
|
| 576 | 600 |
|
| 577 | 601 |
public: |
| 578 | 602 |
|
| 579 |
typedef |
|
| 603 |
typedef BAS Base; |
|
| 580 | 604 |
typedef typename Base::Node Node; |
| 581 | 605 |
typedef typename Base::Arc Arc; |
| 582 | 606 |
|
| 583 | 607 |
typedef IterableDigraphComponent Digraph; |
| 584 | 608 |
|
| 585 |
/// \name Base |
|
| 609 |
/// \name Base Iteration |
|
| 586 | 610 |
/// |
| 587 |
/// This interface provides functions for iteration on digraph items |
|
| 611 |
/// This interface provides functions for iteration on digraph items. |
|
| 588 | 612 |
/// |
| 589 | 613 |
/// @{
|
| 590 | 614 |
|
| 591 |
/// \brief |
|
| 615 |
/// \brief Return the first node. |
|
| 592 | 616 |
/// |
| 593 |
/// Gives back the first node in the iterating order. |
|
| 594 |
/// |
|
| 617 |
/// This function gives back the first node in the iteration order. |
|
| 595 | 618 |
void first(Node&) const {}
|
| 596 | 619 |
|
| 597 |
/// \brief |
|
| 620 |
/// \brief Return the next node. |
|
| 598 | 621 |
/// |
| 599 |
/// Gives back the next node in the iterating order. |
|
| 600 |
/// |
|
| 622 |
/// This function gives back the next node in the iteration order. |
|
| 601 | 623 |
void next(Node&) const {}
|
| 602 | 624 |
|
| 603 |
/// \brief |
|
| 625 |
/// \brief Return the first arc. |
|
| 604 | 626 |
/// |
| 605 |
/// Gives back the first arc in the iterating order. |
|
| 606 |
/// |
|
| 627 |
/// This function gives back the first arc in the iteration order. |
|
| 607 | 628 |
void first(Arc&) const {}
|
| 608 | 629 |
|
| 609 |
/// \brief |
|
| 630 |
/// \brief Return the next arc. |
|
| 610 | 631 |
/// |
| 611 |
/// Gives back the next arc in the iterating order. |
|
| 612 |
/// |
|
| 632 |
/// This function gives back the next arc in the iteration order. |
|
| 613 | 633 |
void next(Arc&) const {}
|
| 614 | 634 |
|
| 615 |
|
|
| 616 |
/// \brief Gives back the first of the arcs point to the given |
|
| 617 |
/// node. |
|
| 635 |
/// \brief Return the first arc incomming to the given node. |
|
| 618 | 636 |
/// |
| 619 |
/// Gives back the first of the arcs point to the given node. |
|
| 620 |
/// |
|
| 637 |
/// This function gives back the first arc incomming to the |
|
| 638 |
/// given node. |
|
| 621 | 639 |
void firstIn(Arc&, const Node&) const {}
|
| 622 | 640 |
|
| 623 |
/// \brief Gives back the next of the arcs points to the given |
|
| 624 |
/// node. |
|
| 641 |
/// \brief Return the next arc incomming to the given node. |
|
| 625 | 642 |
/// |
| 626 |
/// Gives back the next of the arcs points to the given node. |
|
| 627 |
/// |
|
| 643 |
/// This function gives back the next arc incomming to the |
|
| 644 |
/// given node. |
|
| 628 | 645 |
void nextIn(Arc&) const {}
|
| 629 | 646 |
|
| 630 |
/// \brief |
|
| 647 |
/// \brief Return the first arc outgoing form the given node. |
|
| 648 |
/// |
|
| 649 |
/// This function gives back the first arc outgoing form the |
|
| 631 | 650 |
/// given node. |
| 632 |
/// |
|
| 633 |
/// Gives back the first of the arcs start from the given node. |
|
| 634 |
/// |
|
| 635 | 651 |
void firstOut(Arc&, const Node&) const {}
|
| 636 | 652 |
|
| 637 |
/// \brief Gives back the next of the arcs start from the given |
|
| 638 |
/// node. |
|
| 653 |
/// \brief Return the next arc outgoing form the given node. |
|
| 639 | 654 |
/// |
| 640 |
/// Gives back the next of the arcs start from the given node. |
|
| 641 |
/// |
|
| 655 |
/// This function gives back the next arc outgoing form the |
|
| 656 |
/// given node. |
|
| 642 | 657 |
void nextOut(Arc&) const {}
|
| 643 | 658 |
|
| 644 | 659 |
/// @} |
| 645 | 660 |
|
| 646 |
/// \name Class |
|
| 661 |
/// \name Class Based Iteration |
|
| 647 | 662 |
/// |
| 648 |
/// This interface provides |
|
| 663 |
/// This interface provides iterator classes for digraph items. |
|
| 649 | 664 |
/// |
| 650 | 665 |
/// @{
|
| 651 | 666 |
|
| 652 | 667 |
/// \brief This iterator goes through each node. |
| 653 | 668 |
/// |
| 654 | 669 |
/// This iterator goes through each node. |
| 655 | 670 |
/// |
| 656 | 671 |
typedef GraphItemIt<Digraph, Node> NodeIt; |
| 657 | 672 |
|
| 658 |
/// \brief This iterator goes through each |
|
| 673 |
/// \brief This iterator goes through each arc. |
|
| 659 | 674 |
/// |
| 660 |
/// This iterator goes through each |
|
| 675 |
/// This iterator goes through each arc. |
|
| 661 | 676 |
/// |
| 662 | 677 |
typedef GraphItemIt<Digraph, Arc> ArcIt; |
| 663 | 678 |
|
| 664 | 679 |
/// \brief This iterator goes trough the incoming arcs of a node. |
| 665 | 680 |
/// |
| 666 |
/// This iterator goes trough the \e |
|
| 681 |
/// This iterator goes trough the \e incoming arcs of a certain node |
|
| 667 | 682 |
/// of a digraph. |
| 668 | 683 |
typedef GraphIncIt<Digraph, Arc, Node, 'i'> InArcIt; |
| 669 | 684 |
|
| 670 | 685 |
/// \brief This iterator goes trough the outgoing arcs of a node. |
| 671 | 686 |
/// |
| 672 | 687 |
/// This iterator goes trough the \e outgoing arcs of a certain node |
| 673 | 688 |
/// of a digraph. |
| 674 | 689 |
typedef GraphIncIt<Digraph, Arc, Node, 'o'> OutArcIt; |
| 675 | 690 |
|
| 676 | 691 |
/// \brief The base node of the iterator. |
| 677 | 692 |
/// |
| 678 |
/// Gives back the base node of the iterator. |
|
| 679 |
/// It is always the target of the pointed arc. |
|
| 693 |
/// This function gives back the base node of the iterator. |
|
| 694 |
/// It is always the target node of the pointed arc. |
|
| 680 | 695 |
Node baseNode(const InArcIt&) const { return INVALID; }
|
| 681 | 696 |
|
| 682 | 697 |
/// \brief The running node of the iterator. |
| 683 | 698 |
/// |
| 684 |
/// Gives back the running node of the iterator. |
|
| 685 |
/// It is always the source of the pointed arc. |
|
| 699 |
/// This function gives back the running node of the iterator. |
|
| 700 |
/// It is always the source node of the pointed arc. |
|
| 686 | 701 |
Node runningNode(const InArcIt&) const { return INVALID; }
|
| 687 | 702 |
|
| 688 | 703 |
/// \brief The base node of the iterator. |
| 689 | 704 |
/// |
| 690 |
/// Gives back the base node of the iterator. |
|
| 691 |
/// It is always the source of the pointed arc. |
|
| 705 |
/// This function gives back the base node of the iterator. |
|
| 706 |
/// It is always the source node of the pointed arc. |
|
| 692 | 707 |
Node baseNode(const OutArcIt&) const { return INVALID; }
|
| 693 | 708 |
|
| 694 | 709 |
/// \brief The running node of the iterator. |
| 695 | 710 |
/// |
| 696 |
/// Gives back the running node of the iterator. |
|
| 697 |
/// It is always the target of the pointed arc. |
|
| 711 |
/// This function gives back the running node of the iterator. |
|
| 712 |
/// It is always the target node of the pointed arc. |
|
| 698 | 713 |
Node runningNode(const OutArcIt&) const { return INVALID; }
|
| 699 | 714 |
|
| 700 | 715 |
/// @} |
| 701 | 716 |
|
| 702 | 717 |
template <typename _Digraph> |
| 703 | 718 |
struct Constraints {
|
| 704 | 719 |
void constraints() {
|
| 705 | 720 |
checkConcept<Base, _Digraph>(); |
| 706 | 721 |
|
| 707 | 722 |
{
|
| 708 | 723 |
typename _Digraph::Node node(INVALID); |
| 709 | 724 |
typename _Digraph::Arc arc(INVALID); |
| 710 | 725 |
{
|
| 711 | 726 |
digraph.first(node); |
| 712 | 727 |
digraph.next(node); |
| 713 | 728 |
} |
| 714 | 729 |
{
|
| 715 | 730 |
digraph.first(arc); |
| 716 | 731 |
digraph.next(arc); |
| 717 | 732 |
} |
| 718 | 733 |
{
|
| 719 | 734 |
digraph.firstIn(arc, node); |
| 720 | 735 |
digraph.nextIn(arc); |
| 721 | 736 |
} |
| 722 | 737 |
{
|
| 723 | 738 |
digraph.firstOut(arc, node); |
| 724 | 739 |
digraph.nextOut(arc); |
| 725 | 740 |
} |
| 726 | 741 |
} |
| 727 | 742 |
|
| 728 | 743 |
{
|
| 729 | 744 |
checkConcept<GraphItemIt<_Digraph, typename _Digraph::Arc>, |
| 730 | 745 |
typename _Digraph::ArcIt >(); |
| 731 | 746 |
checkConcept<GraphItemIt<_Digraph, typename _Digraph::Node>, |
| 732 | 747 |
typename _Digraph::NodeIt >(); |
| 733 | 748 |
checkConcept<GraphIncIt<_Digraph, typename _Digraph::Arc, |
| 734 | 749 |
typename _Digraph::Node, 'i'>, typename _Digraph::InArcIt>(); |
| 735 | 750 |
checkConcept<GraphIncIt<_Digraph, typename _Digraph::Arc, |
| 736 | 751 |
typename _Digraph::Node, 'o'>, typename _Digraph::OutArcIt>(); |
| 737 | 752 |
|
| 738 | 753 |
typename _Digraph::Node n; |
| 739 |
typename _Digraph::InArcIt ieit(INVALID); |
|
| 740 |
typename _Digraph::OutArcIt oeit(INVALID); |
|
| 741 |
n = digraph.baseNode(ieit); |
|
| 742 |
n = digraph.runningNode(ieit); |
|
| 743 |
n = digraph.baseNode(oeit); |
|
| 744 |
n = digraph.runningNode(oeit); |
|
| 754 |
const typename _Digraph::InArcIt iait(INVALID); |
|
| 755 |
const typename _Digraph::OutArcIt oait(INVALID); |
|
| 756 |
n = digraph.baseNode(iait); |
|
| 757 |
n = digraph.runningNode(iait); |
|
| 758 |
n = digraph.baseNode(oait); |
|
| 759 |
n = digraph.runningNode(oait); |
|
| 745 | 760 |
ignore_unused_variable_warning(n); |
| 746 | 761 |
} |
| 747 | 762 |
} |
| 748 | 763 |
|
| 749 | 764 |
const _Digraph& digraph; |
| 750 |
|
|
| 751 | 765 |
}; |
| 752 | 766 |
}; |
| 753 | 767 |
|
| 754 |
/// \brief |
|
| 768 |
/// \brief Skeleton class for iterable undirected graphs. |
|
| 755 | 769 |
/// |
| 756 |
/// This class provides beside the core graph features iterator |
|
| 757 |
/// based iterable interface for the undirected graph structure. |
|
| 770 |
/// This class describes the interface of iterable undirected |
|
| 771 |
/// graphs. It extends \ref IterableDigraphComponent with the core |
|
| 772 |
/// iterable interface of undirected graphs. |
|
| 758 | 773 |
/// This concept is part of the Graph concept. |
| 759 |
template <typename _Base = BaseGraphComponent> |
|
| 760 |
class IterableGraphComponent : public IterableDigraphComponent<_Base> {
|
|
| 774 |
template <typename BAS = BaseGraphComponent> |
|
| 775 |
class IterableGraphComponent : public IterableDigraphComponent<BAS> {
|
|
| 761 | 776 |
public: |
| 762 | 777 |
|
| 763 |
typedef |
|
| 778 |
typedef BAS Base; |
|
| 764 | 779 |
typedef typename Base::Node Node; |
| 765 | 780 |
typedef typename Base::Arc Arc; |
| 766 | 781 |
typedef typename Base::Edge Edge; |
| 767 | 782 |
|
| 768 | 783 |
|
| 769 | 784 |
typedef IterableGraphComponent Graph; |
| 770 | 785 |
|
| 771 |
/// \name Base |
|
| 786 |
/// \name Base Iteration |
|
| 772 | 787 |
/// |
| 773 |
/// This interface provides functions for iteration on |
|
| 788 |
/// This interface provides functions for iteration on edges. |
|
| 789 |
/// |
|
| 774 | 790 |
/// @{
|
| 775 | 791 |
|
| 776 |
using IterableDigraphComponent<_Base>::first; |
|
| 777 |
using IterableDigraphComponent<_Base>::next; |
|
| 792 |
using IterableDigraphComponent<Base>::first; |
|
| 793 |
using IterableDigraphComponent<Base>::next; |
|
| 778 | 794 |
|
| 779 |
/// \brief Gives back the first edge in the iterating |
|
| 780 |
/// order. |
|
| 795 |
/// \brief Return the first edge. |
|
| 781 | 796 |
/// |
| 782 |
/// Gives back the first edge in the iterating order. |
|
| 783 |
/// |
|
| 797 |
/// This function gives back the first edge in the iteration order. |
|
| 784 | 798 |
void first(Edge&) const {}
|
| 785 | 799 |
|
| 786 |
/// \brief Gives back the next edge in the iterating |
|
| 787 |
/// order. |
|
| 800 |
/// \brief Return the next edge. |
|
| 788 | 801 |
/// |
| 789 |
/// Gives back the next edge in the iterating order. |
|
| 790 |
/// |
|
| 802 |
/// This function gives back the next edge in the iteration order. |
|
| 791 | 803 |
void next(Edge&) const {}
|
| 792 | 804 |
|
| 793 |
|
|
| 794 |
/// \brief Gives back the first of the edges from the |
|
| 805 |
/// \brief Return the first edge incident to the given node. |
|
| 806 |
/// |
|
| 807 |
/// This function gives back the first edge incident to the given |
|
| 808 |
/// node. The bool parameter gives back the direction for which the |
|
| 809 |
/// source node of the directed arc representing the edge is the |
|
| 795 | 810 |
/// given node. |
| 796 |
/// |
|
| 797 |
/// Gives back the first of the edges from the given |
|
| 798 |
/// node. The bool parameter gives back that direction which |
|
| 799 |
/// gives a good direction of the edge so the source of the |
|
| 800 |
/// directed arc is the given node. |
|
| 801 | 811 |
void firstInc(Edge&, bool&, const Node&) const {}
|
| 802 | 812 |
|
| 803 | 813 |
/// \brief Gives back the next of the edges from the |
| 804 | 814 |
/// given node. |
| 805 | 815 |
/// |
| 806 |
/// Gives back the next of the edges from the given |
|
| 807 |
/// node. The bool parameter should be used as the \c firstInc() |
|
| 808 |
/// |
|
| 816 |
/// This function gives back the next edge incident to the given |
|
| 817 |
/// node. The bool parameter should be used as \c firstInc() use it. |
|
| 809 | 818 |
void nextInc(Edge&, bool&) const {}
|
| 810 | 819 |
|
| 811 |
using IterableDigraphComponent<_Base>::baseNode; |
|
| 812 |
using IterableDigraphComponent<_Base>::runningNode; |
|
| 820 |
using IterableDigraphComponent<Base>::baseNode; |
|
| 821 |
using IterableDigraphComponent<Base>::runningNode; |
|
| 813 | 822 |
|
| 814 | 823 |
/// @} |
| 815 | 824 |
|
| 816 |
/// \name Class |
|
| 825 |
/// \name Class Based Iteration |
|
| 817 | 826 |
/// |
| 818 |
/// This interface provides |
|
| 827 |
/// This interface provides iterator classes for edges. |
|
| 819 | 828 |
/// |
| 820 | 829 |
/// @{
|
| 821 | 830 |
|
| 822 |
/// \brief This iterator goes through each |
|
| 831 |
/// \brief This iterator goes through each edge. |
|
| 823 | 832 |
/// |
| 824 |
/// This iterator goes through each |
|
| 833 |
/// This iterator goes through each edge. |
|
| 825 | 834 |
typedef GraphItemIt<Graph, Edge> EdgeIt; |
| 826 |
|
|
| 835 |
|
|
| 836 |
/// \brief This iterator goes trough the incident edges of a |
|
| 827 | 837 |
/// node. |
| 828 | 838 |
/// |
| 829 |
/// This iterator goes trough the incident |
|
| 839 |
/// This iterator goes trough the incident edges of a certain |
|
| 830 | 840 |
/// node of a graph. |
| 831 |
typedef GraphIncIt<Graph, Edge, Node, ' |
|
| 841 |
typedef GraphIncIt<Graph, Edge, Node, 'e'> IncEdgeIt; |
|
| 842 |
|
|
| 832 | 843 |
/// \brief The base node of the iterator. |
| 833 | 844 |
/// |
| 834 |
/// |
|
| 845 |
/// This function gives back the base node of the iterator. |
|
| 835 | 846 |
Node baseNode(const IncEdgeIt&) const { return INVALID; }
|
| 836 | 847 |
|
| 837 | 848 |
/// \brief The running node of the iterator. |
| 838 | 849 |
/// |
| 839 |
/// |
|
| 850 |
/// This function gives back the running node of the iterator. |
|
| 840 | 851 |
Node runningNode(const IncEdgeIt&) const { return INVALID; }
|
| 841 | 852 |
|
| 842 | 853 |
/// @} |
| 843 | 854 |
|
| 844 | 855 |
template <typename _Graph> |
| 845 | 856 |
struct Constraints {
|
| 846 | 857 |
void constraints() {
|
| 847 | 858 |
checkConcept<IterableDigraphComponent<Base>, _Graph>(); |
| 848 | 859 |
|
| 849 | 860 |
{
|
| 850 | 861 |
typename _Graph::Node node(INVALID); |
| 851 | 862 |
typename _Graph::Edge edge(INVALID); |
| 852 | 863 |
bool dir; |
| 853 | 864 |
{
|
| 854 | 865 |
graph.first(edge); |
| 855 | 866 |
graph.next(edge); |
| 856 | 867 |
} |
| 857 | 868 |
{
|
| 858 | 869 |
graph.firstInc(edge, dir, node); |
| 859 | 870 |
graph.nextInc(edge, dir); |
| 860 | 871 |
} |
| 861 | 872 |
|
| 862 | 873 |
} |
| 863 | 874 |
|
| 864 | 875 |
{
|
| 865 | 876 |
checkConcept<GraphItemIt<_Graph, typename _Graph::Edge>, |
| 866 | 877 |
typename _Graph::EdgeIt >(); |
| 867 | 878 |
checkConcept<GraphIncIt<_Graph, typename _Graph::Edge, |
| 868 |
typename _Graph::Node, ' |
|
| 879 |
typename _Graph::Node, 'e'>, typename _Graph::IncEdgeIt>(); |
|
| 869 | 880 |
|
| 870 | 881 |
typename _Graph::Node n; |
| 871 |
typename _Graph::IncEdgeIt ueit(INVALID); |
|
| 872 |
n = graph.baseNode(ueit); |
|
| 873 |
|
|
| 882 |
const typename _Graph::IncEdgeIt ieit(INVALID); |
|
| 883 |
n = graph.baseNode(ieit); |
|
| 884 |
n = graph.runningNode(ieit); |
|
| 874 | 885 |
} |
| 875 | 886 |
} |
| 876 | 887 |
|
| 877 | 888 |
const _Graph& graph; |
| 878 |
|
|
| 879 | 889 |
}; |
| 880 | 890 |
}; |
| 881 | 891 |
|
| 882 |
/// \brief |
|
| 892 |
/// \brief Skeleton class for alterable directed graphs. |
|
| 883 | 893 |
/// |
| 884 |
/// This class provides beside the core digraph features alteration |
|
| 885 |
/// notifier interface for the digraph structure. This implements |
|
| 894 |
/// This class describes the interface of alterable directed |
|
| 895 |
/// graphs. It extends \ref BaseDigraphComponent with the alteration |
|
| 896 |
/// notifier interface. It implements |
|
| 886 | 897 |
/// an observer-notifier pattern for each digraph item. More |
| 887 | 898 |
/// obsevers can be registered into the notifier and whenever an |
| 888 |
/// alteration occured in the digraph all the observers will |
|
| 899 |
/// alteration occured in the digraph all the observers will be |
|
| 889 | 900 |
/// notified about it. |
| 890 |
template <typename _Base = BaseDigraphComponent> |
|
| 891 |
class AlterableDigraphComponent : public _Base {
|
|
| 901 |
template <typename BAS = BaseDigraphComponent> |
|
| 902 |
class AlterableDigraphComponent : public BAS {
|
|
| 892 | 903 |
public: |
| 893 | 904 |
|
| 894 |
typedef |
|
| 905 |
typedef BAS Base; |
|
| 895 | 906 |
typedef typename Base::Node Node; |
| 896 | 907 |
typedef typename Base::Arc Arc; |
| 897 | 908 |
|
| 898 | 909 |
|
| 899 |
/// |
|
| 910 |
/// Node alteration notifier class. |
|
| 900 | 911 |
typedef AlterationNotifier<AlterableDigraphComponent, Node> |
| 901 | 912 |
NodeNotifier; |
| 902 |
/// |
|
| 913 |
/// Arc alteration notifier class. |
|
| 903 | 914 |
typedef AlterationNotifier<AlterableDigraphComponent, Arc> |
| 904 | 915 |
ArcNotifier; |
| 905 | 916 |
|
| 906 |
/// \brief |
|
| 917 |
/// \brief Return the node alteration notifier. |
|
| 907 | 918 |
/// |
| 908 |
/// |
|
| 919 |
/// This function gives back the node alteration notifier. |
|
| 909 | 920 |
NodeNotifier& notifier(Node) const {
|
| 910 |
return NodeNotifier(); |
|
| 921 |
return NodeNotifier(); |
|
| 911 | 922 |
} |
| 912 | 923 |
|
| 913 |
/// \brief |
|
| 924 |
/// \brief Return the arc alteration notifier. |
|
| 914 | 925 |
/// |
| 915 |
/// |
|
| 926 |
/// This function gives back the arc alteration notifier. |
|
| 916 | 927 |
ArcNotifier& notifier(Arc) const {
|
| 917 | 928 |
return ArcNotifier(); |
| 918 | 929 |
} |
| 919 | 930 |
|
| 920 | 931 |
template <typename _Digraph> |
| 921 | 932 |
struct Constraints {
|
| 922 | 933 |
void constraints() {
|
| 923 | 934 |
checkConcept<Base, _Digraph>(); |
| 924 | 935 |
typename _Digraph::NodeNotifier& nn |
| 925 | 936 |
= digraph.notifier(typename _Digraph::Node()); |
| 926 | 937 |
|
| 927 | 938 |
typename _Digraph::ArcNotifier& en |
| 928 | 939 |
= digraph.notifier(typename _Digraph::Arc()); |
| 929 | 940 |
|
| 930 | 941 |
ignore_unused_variable_warning(nn); |
| 931 | 942 |
ignore_unused_variable_warning(en); |
| 932 | 943 |
} |
| 933 | 944 |
|
| 934 | 945 |
const _Digraph& digraph; |
| 935 |
|
|
| 936 | 946 |
}; |
| 937 |
|
|
| 938 | 947 |
}; |
| 939 | 948 |
|
| 940 |
/// \brief |
|
| 949 |
/// \brief Skeleton class for alterable undirected graphs. |
|
| 941 | 950 |
/// |
| 942 |
/// This class provides beside the core graph features alteration |
|
| 943 |
/// notifier interface for the graph structure. This implements |
|
| 944 |
/// |
|
| 951 |
/// This class describes the interface of alterable undirected |
|
| 952 |
/// graphs. It extends \ref AlterableDigraphComponent with the alteration |
|
| 953 |
/// notifier interface of undirected graphs. It implements |
|
| 954 |
/// an observer-notifier pattern for the edges. More |
|
| 945 | 955 |
/// obsevers can be registered into the notifier and whenever an |
| 946 |
/// alteration occured in the graph all the observers will |
|
| 956 |
/// alteration occured in the graph all the observers will be |
|
| 947 | 957 |
/// notified about it. |
| 948 |
template <typename _Base = BaseGraphComponent> |
|
| 949 |
class AlterableGraphComponent : public AlterableDigraphComponent<_Base> {
|
|
| 958 |
template <typename BAS = BaseGraphComponent> |
|
| 959 |
class AlterableGraphComponent : public AlterableDigraphComponent<BAS> {
|
|
| 950 | 960 |
public: |
| 951 | 961 |
|
| 952 |
typedef |
|
| 962 |
typedef BAS Base; |
|
| 953 | 963 |
typedef typename Base::Edge Edge; |
| 954 | 964 |
|
| 955 | 965 |
|
| 956 |
/// |
|
| 966 |
/// Edge alteration notifier class. |
|
| 957 | 967 |
typedef AlterationNotifier<AlterableGraphComponent, Edge> |
| 958 | 968 |
EdgeNotifier; |
| 959 | 969 |
|
| 960 |
/// \brief |
|
| 970 |
/// \brief Return the edge alteration notifier. |
|
| 961 | 971 |
/// |
| 962 |
/// |
|
| 972 |
/// This function gives back the edge alteration notifier. |
|
| 963 | 973 |
EdgeNotifier& notifier(Edge) const {
|
| 964 | 974 |
return EdgeNotifier(); |
| 965 | 975 |
} |
| 966 | 976 |
|
| 967 | 977 |
template <typename _Graph> |
| 968 | 978 |
struct Constraints {
|
| 969 | 979 |
void constraints() {
|
| 970 |
checkConcept< |
|
| 980 |
checkConcept<AlterableDigraphComponent<Base>, _Graph>(); |
|
| 971 | 981 |
typename _Graph::EdgeNotifier& uen |
| 972 | 982 |
= graph.notifier(typename _Graph::Edge()); |
| 973 | 983 |
ignore_unused_variable_warning(uen); |
| 974 | 984 |
} |
| 975 | 985 |
|
| 976 | 986 |
const _Graph& graph; |
| 977 |
|
|
| 978 | 987 |
}; |
| 979 |
|
|
| 980 | 988 |
}; |
| 981 | 989 |
|
| 982 |
/// \brief |
|
| 990 |
/// \brief Concept class for standard graph maps. |
|
| 983 | 991 |
/// |
| 984 |
/// This class describes the common interface of the graph maps |
|
| 985 |
/// (NodeMap, ArcMap), that is maps that can be used to |
|
| 986 |
/// associate data to graph descriptors (nodes or arcs). |
|
| 987 |
template <typename _Graph, typename _Item, typename _Value> |
|
| 988 |
class |
|
| 992 |
/// This class describes the concept of standard graph maps, i.e. |
|
| 993 |
/// the \c NodeMap, \c ArcMap and \c EdgeMap subtypes of digraph and |
|
| 994 |
/// graph types, which can be used for associating data to graph items. |
|
| 995 |
/// The standard graph maps must conform to the ReferenceMap concept. |
|
| 996 |
template <typename GR, typename K, typename V> |
|
| 997 |
class GraphMap : public ReferenceMap<K, V, V&, const V&> {
|
|
| 998 |
typedef ReferenceMap<K, V, V&, const V&> Parent; |
|
| 999 |
|
|
| 989 | 1000 |
public: |
| 990 | 1001 |
|
| 991 |
|
|
| 1002 |
/// The key type of the map. |
|
| 1003 |
typedef K Key; |
|
| 1004 |
/// The value type of the map. |
|
| 1005 |
typedef V Value; |
|
| 1006 |
/// The reference type of the map. |
|
| 1007 |
typedef Value& Reference; |
|
| 1008 |
/// The const reference type of the map. |
|
| 1009 |
typedef const Value& ConstReference; |
|
| 992 | 1010 |
|
| 993 |
/// The graph type of the map. |
|
| 994 |
typedef _Graph Graph; |
|
| 995 |
/// The key type of the map. |
|
| 996 |
typedef _Item Key; |
|
| 997 |
/// The value type of the map. |
|
| 998 |
typedef _Value Value; |
|
| 1011 |
// The reference map tag. |
|
| 1012 |
typedef True ReferenceMapTag; |
|
| 999 | 1013 |
|
| 1000 | 1014 |
/// \brief Construct a new map. |
| 1001 | 1015 |
/// |
| 1002 | 1016 |
/// Construct a new map for the graph. |
| 1003 |
explicit GraphMap(const |
|
| 1017 |
explicit GraphMap(const GR&) {}
|
|
| 1004 | 1018 |
/// \brief Construct a new map with default value. |
| 1005 | 1019 |
/// |
| 1006 |
/// Construct a new map for the graph and initalise the values. |
|
| 1007 |
GraphMap(const Graph&, const Value&) {}
|
|
| 1020 |
/// Construct a new map for the graph and initalize the values. |
|
| 1021 |
GraphMap(const GR&, const Value&) {}
|
|
| 1008 | 1022 |
|
| 1009 | 1023 |
private: |
| 1010 | 1024 |
/// \brief Copy constructor. |
| 1011 | 1025 |
/// |
| 1012 | 1026 |
/// Copy Constructor. |
| 1013 | 1027 |
GraphMap(const GraphMap&) : Parent() {}
|
| 1014 | 1028 |
|
| 1015 |
/// \brief |
|
| 1029 |
/// \brief Assignment operator. |
|
| 1016 | 1030 |
/// |
| 1017 |
/// |
|
| 1031 |
/// Assignment operator. It does not mofify the underlying graph, |
|
| 1018 | 1032 |
/// it just iterates on the current item set and set the map |
| 1019 | 1033 |
/// with the value returned by the assigned map. |
| 1020 | 1034 |
template <typename CMap> |
| 1021 | 1035 |
GraphMap& operator=(const CMap&) {
|
| 1022 | 1036 |
checkConcept<ReadMap<Key, Value>, CMap>(); |
| 1023 | 1037 |
return *this; |
| 1024 | 1038 |
} |
| 1025 | 1039 |
|
| 1026 | 1040 |
public: |
| 1027 | 1041 |
template<typename _Map> |
| 1028 | 1042 |
struct Constraints {
|
| 1029 | 1043 |
void constraints() {
|
| 1030 |
checkConcept<ReadWriteMap<Key, Value>, _Map >(); |
|
| 1031 |
// Construction with a graph parameter |
|
| 1032 |
_Map a(g); |
|
| 1033 |
// Constructor with a graph and a default value parameter |
|
| 1034 |
_Map a2(g,t); |
|
| 1035 |
// Copy constructor. |
|
| 1036 |
|
|
| 1044 |
checkConcept |
|
| 1045 |
<ReferenceMap<Key, Value, Value&, const Value&>, _Map>(); |
|
| 1046 |
_Map m1(g); |
|
| 1047 |
_Map m2(g,t); |
|
| 1048 |
|
|
| 1049 |
// Copy constructor |
|
| 1050 |
// _Map m3(m); |
|
| 1037 | 1051 |
|
| 1052 |
// Assignment operator |
|
| 1038 | 1053 |
// ReadMap<Key, Value> cmap; |
| 1039 |
// |
|
| 1054 |
// m3 = cmap; |
|
| 1040 | 1055 |
|
| 1041 |
ignore_unused_variable_warning(a); |
|
| 1042 |
ignore_unused_variable_warning(a2); |
|
| 1043 |
|
|
| 1056 |
ignore_unused_variable_warning(m1); |
|
| 1057 |
ignore_unused_variable_warning(m2); |
|
| 1058 |
// ignore_unused_variable_warning(m3); |
|
| 1044 | 1059 |
} |
| 1045 | 1060 |
|
| 1046 |
const _Map &c; |
|
| 1047 |
const Graph &g; |
|
| 1061 |
const _Map &m; |
|
| 1062 |
const GR &g; |
|
| 1048 | 1063 |
const typename GraphMap::Value &t; |
| 1049 | 1064 |
}; |
| 1050 | 1065 |
|
| 1051 | 1066 |
}; |
| 1052 | 1067 |
|
| 1053 |
/// \brief |
|
| 1068 |
/// \brief Skeleton class for mappable directed graphs. |
|
| 1054 | 1069 |
/// |
| 1055 |
/// This class provides beside the core digraph features |
|
| 1056 |
/// map interface for the digraph structure. |
|
| 1070 |
/// This class describes the interface of mappable directed graphs. |
|
| 1071 |
/// It extends \ref BaseDigraphComponent with the standard digraph |
|
| 1072 |
/// map classes, namely \c NodeMap and \c ArcMap. |
|
| 1057 | 1073 |
/// This concept is part of the Digraph concept. |
| 1058 |
template <typename _Base = BaseDigraphComponent> |
|
| 1059 |
class MappableDigraphComponent : public _Base {
|
|
| 1074 |
template <typename BAS = BaseDigraphComponent> |
|
| 1075 |
class MappableDigraphComponent : public BAS {
|
|
| 1060 | 1076 |
public: |
| 1061 | 1077 |
|
| 1062 |
typedef |
|
| 1078 |
typedef BAS Base; |
|
| 1063 | 1079 |
typedef typename Base::Node Node; |
| 1064 | 1080 |
typedef typename Base::Arc Arc; |
| 1065 | 1081 |
|
| 1066 | 1082 |
typedef MappableDigraphComponent Digraph; |
| 1067 | 1083 |
|
| 1068 |
/// \brief |
|
| 1084 |
/// \brief Standard graph map for the nodes. |
|
| 1069 | 1085 |
/// |
| 1070 |
/// ReadWrite map of the nodes. |
|
| 1071 |
/// |
|
| 1072 |
template <typename _Value> |
|
| 1073 |
class NodeMap : public GraphMap<Digraph, Node, _Value> {
|
|
| 1086 |
/// Standard graph map for the nodes. |
|
| 1087 |
/// It conforms to the ReferenceMap concept. |
|
| 1088 |
template <typename V> |
|
| 1089 |
class NodeMap : public GraphMap<MappableDigraphComponent, Node, V> {
|
|
| 1090 |
typedef GraphMap<MappableDigraphComponent, Node, V> Parent; |
|
| 1091 |
|
|
| 1074 | 1092 |
public: |
| 1075 |
typedef GraphMap<MappableDigraphComponent, Node, _Value> Parent; |
|
| 1076 |
|
|
| 1077 | 1093 |
/// \brief Construct a new map. |
| 1078 | 1094 |
/// |
| 1079 | 1095 |
/// Construct a new map for the digraph. |
| 1080 | 1096 |
explicit NodeMap(const MappableDigraphComponent& digraph) |
| 1081 | 1097 |
: Parent(digraph) {}
|
| 1082 | 1098 |
|
| 1083 | 1099 |
/// \brief Construct a new map with default value. |
| 1084 | 1100 |
/// |
| 1085 |
/// Construct a new map for the digraph and initalise the values. |
|
| 1086 |
NodeMap(const MappableDigraphComponent& digraph, const _Value& value) |
|
| 1101 |
/// Construct a new map for the digraph and initalize the values. |
|
| 1102 |
NodeMap(const MappableDigraphComponent& digraph, const V& value) |
|
| 1087 | 1103 |
: Parent(digraph, value) {}
|
| 1088 | 1104 |
|
| 1089 | 1105 |
private: |
| 1090 | 1106 |
/// \brief Copy constructor. |
| 1091 | 1107 |
/// |
| 1092 | 1108 |
/// Copy Constructor. |
| 1093 | 1109 |
NodeMap(const NodeMap& nm) : Parent(nm) {}
|
| 1094 | 1110 |
|
| 1095 |
/// \brief |
|
| 1111 |
/// \brief Assignment operator. |
|
| 1096 | 1112 |
/// |
| 1097 |
/// |
|
| 1113 |
/// Assignment operator. |
|
| 1098 | 1114 |
template <typename CMap> |
| 1099 | 1115 |
NodeMap& operator=(const CMap&) {
|
| 1100 |
checkConcept<ReadMap<Node, |
|
| 1116 |
checkConcept<ReadMap<Node, V>, CMap>(); |
|
| 1101 | 1117 |
return *this; |
| 1102 | 1118 |
} |
| 1103 | 1119 |
|
| 1104 | 1120 |
}; |
| 1105 | 1121 |
|
| 1106 |
/// \brief |
|
| 1122 |
/// \brief Standard graph map for the arcs. |
|
| 1107 | 1123 |
/// |
| 1108 |
/// ReadWrite map of the arcs. |
|
| 1109 |
/// |
|
| 1110 |
template <typename _Value> |
|
| 1111 |
class ArcMap : public GraphMap<Digraph, Arc, _Value> {
|
|
| 1124 |
/// Standard graph map for the arcs. |
|
| 1125 |
/// It conforms to the ReferenceMap concept. |
|
| 1126 |
template <typename V> |
|
| 1127 |
class ArcMap : public GraphMap<MappableDigraphComponent, Arc, V> {
|
|
| 1128 |
typedef GraphMap<MappableDigraphComponent, Arc, V> Parent; |
|
| 1129 |
|
|
| 1112 | 1130 |
public: |
| 1113 |
typedef GraphMap<MappableDigraphComponent, Arc, _Value> Parent; |
|
| 1114 |
|
|
| 1115 | 1131 |
/// \brief Construct a new map. |
| 1116 | 1132 |
/// |
| 1117 | 1133 |
/// Construct a new map for the digraph. |
| 1118 | 1134 |
explicit ArcMap(const MappableDigraphComponent& digraph) |
| 1119 | 1135 |
: Parent(digraph) {}
|
| 1120 | 1136 |
|
| 1121 | 1137 |
/// \brief Construct a new map with default value. |
| 1122 | 1138 |
/// |
| 1123 |
/// Construct a new map for the digraph and initalise the values. |
|
| 1124 |
ArcMap(const MappableDigraphComponent& digraph, const _Value& value) |
|
| 1139 |
/// Construct a new map for the digraph and initalize the values. |
|
| 1140 |
ArcMap(const MappableDigraphComponent& digraph, const V& value) |
|
| 1125 | 1141 |
: Parent(digraph, value) {}
|
| 1126 | 1142 |
|
| 1127 | 1143 |
private: |
| 1128 | 1144 |
/// \brief Copy constructor. |
| 1129 | 1145 |
/// |
| 1130 | 1146 |
/// Copy Constructor. |
| 1131 | 1147 |
ArcMap(const ArcMap& nm) : Parent(nm) {}
|
| 1132 | 1148 |
|
| 1133 |
/// \brief |
|
| 1149 |
/// \brief Assignment operator. |
|
| 1134 | 1150 |
/// |
| 1135 |
/// |
|
| 1151 |
/// Assignment operator. |
|
| 1136 | 1152 |
template <typename CMap> |
| 1137 | 1153 |
ArcMap& operator=(const CMap&) {
|
| 1138 |
checkConcept<ReadMap<Arc, |
|
| 1154 |
checkConcept<ReadMap<Arc, V>, CMap>(); |
|
| 1139 | 1155 |
return *this; |
| 1140 | 1156 |
} |
| 1141 | 1157 |
|
| 1142 | 1158 |
}; |
| 1143 | 1159 |
|
| 1144 | 1160 |
|
| 1145 | 1161 |
template <typename _Digraph> |
| 1146 | 1162 |
struct Constraints {
|
| 1147 | 1163 |
|
| 1148 | 1164 |
struct Dummy {
|
| 1149 | 1165 |
int value; |
| 1150 | 1166 |
Dummy() : value(0) {}
|
| 1151 | 1167 |
Dummy(int _v) : value(_v) {}
|
| 1152 | 1168 |
}; |
| 1153 | 1169 |
|
| 1154 | 1170 |
void constraints() {
|
| 1155 | 1171 |
checkConcept<Base, _Digraph>(); |
| 1156 | 1172 |
{ // int map test
|
| 1157 | 1173 |
typedef typename _Digraph::template NodeMap<int> IntNodeMap; |
| 1158 | 1174 |
checkConcept<GraphMap<_Digraph, typename _Digraph::Node, int>, |
| 1159 | 1175 |
IntNodeMap >(); |
| 1160 | 1176 |
} { // bool map test
|
| 1161 | 1177 |
typedef typename _Digraph::template NodeMap<bool> BoolNodeMap; |
| 1162 | 1178 |
checkConcept<GraphMap<_Digraph, typename _Digraph::Node, bool>, |
| 1163 | 1179 |
BoolNodeMap >(); |
| 1164 | 1180 |
} { // Dummy map test
|
| 1165 | 1181 |
typedef typename _Digraph::template NodeMap<Dummy> DummyNodeMap; |
| 1166 | 1182 |
checkConcept<GraphMap<_Digraph, typename _Digraph::Node, Dummy>, |
| 1167 | 1183 |
DummyNodeMap >(); |
| 1168 | 1184 |
} |
| 1169 | 1185 |
|
| 1170 | 1186 |
{ // int map test
|
| 1171 | 1187 |
typedef typename _Digraph::template ArcMap<int> IntArcMap; |
| 1172 | 1188 |
checkConcept<GraphMap<_Digraph, typename _Digraph::Arc, int>, |
| 1173 | 1189 |
IntArcMap >(); |
| 1174 | 1190 |
} { // bool map test
|
| 1175 | 1191 |
typedef typename _Digraph::template ArcMap<bool> BoolArcMap; |
| 1176 | 1192 |
checkConcept<GraphMap<_Digraph, typename _Digraph::Arc, bool>, |
| 1177 | 1193 |
BoolArcMap >(); |
| 1178 | 1194 |
} { // Dummy map test
|
| 1179 | 1195 |
typedef typename _Digraph::template ArcMap<Dummy> DummyArcMap; |
| 1180 | 1196 |
checkConcept<GraphMap<_Digraph, typename _Digraph::Arc, Dummy>, |
| 1181 | 1197 |
DummyArcMap >(); |
| 1182 | 1198 |
} |
| 1183 | 1199 |
} |
| 1184 | 1200 |
|
| 1185 |
_Digraph& digraph; |
|
| 1201 |
const _Digraph& digraph; |
|
| 1186 | 1202 |
}; |
| 1187 | 1203 |
}; |
| 1188 | 1204 |
|
| 1189 |
/// \brief |
|
| 1205 |
/// \brief Skeleton class for mappable undirected graphs. |
|
| 1190 | 1206 |
/// |
| 1191 |
/// This class provides beside the core graph features |
|
| 1192 |
/// map interface for the graph structure. |
|
| 1207 |
/// This class describes the interface of mappable undirected graphs. |
|
| 1208 |
/// It extends \ref MappableDigraphComponent with the standard graph |
|
| 1209 |
/// map class for edges (\c EdgeMap). |
|
| 1193 | 1210 |
/// This concept is part of the Graph concept. |
| 1194 |
template <typename _Base = BaseGraphComponent> |
|
| 1195 |
class MappableGraphComponent : public MappableDigraphComponent<_Base> {
|
|
| 1211 |
template <typename BAS = BaseGraphComponent> |
|
| 1212 |
class MappableGraphComponent : public MappableDigraphComponent<BAS> {
|
|
| 1196 | 1213 |
public: |
| 1197 | 1214 |
|
| 1198 |
typedef |
|
| 1215 |
typedef BAS Base; |
|
| 1199 | 1216 |
typedef typename Base::Edge Edge; |
| 1200 | 1217 |
|
| 1201 | 1218 |
typedef MappableGraphComponent Graph; |
| 1202 | 1219 |
|
| 1203 |
/// \brief |
|
| 1220 |
/// \brief Standard graph map for the edges. |
|
| 1204 | 1221 |
/// |
| 1205 |
/// ReadWrite map of the edges. |
|
| 1206 |
/// |
|
| 1207 |
template <typename _Value> |
|
| 1208 |
class EdgeMap : public GraphMap<Graph, Edge, _Value> {
|
|
| 1222 |
/// Standard graph map for the edges. |
|
| 1223 |
/// It conforms to the ReferenceMap concept. |
|
| 1224 |
template <typename V> |
|
| 1225 |
class EdgeMap : public GraphMap<MappableGraphComponent, Edge, V> {
|
|
| 1226 |
typedef GraphMap<MappableGraphComponent, Edge, V> Parent; |
|
| 1227 |
|
|
| 1209 | 1228 |
public: |
| 1210 |
typedef GraphMap<MappableGraphComponent, Edge, _Value> Parent; |
|
| 1211 |
|
|
| 1212 | 1229 |
/// \brief Construct a new map. |
| 1213 | 1230 |
/// |
| 1214 | 1231 |
/// Construct a new map for the graph. |
| 1215 | 1232 |
explicit EdgeMap(const MappableGraphComponent& graph) |
| 1216 | 1233 |
: Parent(graph) {}
|
| 1217 | 1234 |
|
| 1218 | 1235 |
/// \brief Construct a new map with default value. |
| 1219 | 1236 |
/// |
| 1220 |
/// Construct a new map for the graph and initalise the values. |
|
| 1221 |
EdgeMap(const MappableGraphComponent& graph, const _Value& value) |
|
| 1237 |
/// Construct a new map for the graph and initalize the values. |
|
| 1238 |
EdgeMap(const MappableGraphComponent& graph, const V& value) |
|
| 1222 | 1239 |
: Parent(graph, value) {}
|
| 1223 | 1240 |
|
| 1224 | 1241 |
private: |
| 1225 | 1242 |
/// \brief Copy constructor. |
| 1226 | 1243 |
/// |
| 1227 | 1244 |
/// Copy Constructor. |
| 1228 | 1245 |
EdgeMap(const EdgeMap& nm) : Parent(nm) {}
|
| 1229 | 1246 |
|
| 1230 |
/// \brief |
|
| 1247 |
/// \brief Assignment operator. |
|
| 1231 | 1248 |
/// |
| 1232 |
/// |
|
| 1249 |
/// Assignment operator. |
|
| 1233 | 1250 |
template <typename CMap> |
| 1234 | 1251 |
EdgeMap& operator=(const CMap&) {
|
| 1235 |
checkConcept<ReadMap<Edge, |
|
| 1252 |
checkConcept<ReadMap<Edge, V>, CMap>(); |
|
| 1236 | 1253 |
return *this; |
| 1237 | 1254 |
} |
| 1238 | 1255 |
|
| 1239 | 1256 |
}; |
| 1240 | 1257 |
|
| 1241 | 1258 |
|
| 1242 | 1259 |
template <typename _Graph> |
| 1243 | 1260 |
struct Constraints {
|
| 1244 | 1261 |
|
| 1245 | 1262 |
struct Dummy {
|
| 1246 | 1263 |
int value; |
| 1247 | 1264 |
Dummy() : value(0) {}
|
| 1248 | 1265 |
Dummy(int _v) : value(_v) {}
|
| 1249 | 1266 |
}; |
| 1250 | 1267 |
|
| 1251 | 1268 |
void constraints() {
|
| 1252 |
checkConcept< |
|
| 1269 |
checkConcept<MappableDigraphComponent<Base>, _Graph>(); |
|
| 1253 | 1270 |
|
| 1254 | 1271 |
{ // int map test
|
| 1255 | 1272 |
typedef typename _Graph::template EdgeMap<int> IntEdgeMap; |
| 1256 | 1273 |
checkConcept<GraphMap<_Graph, typename _Graph::Edge, int>, |
| 1257 | 1274 |
IntEdgeMap >(); |
| 1258 | 1275 |
} { // bool map test
|
| 1259 | 1276 |
typedef typename _Graph::template EdgeMap<bool> BoolEdgeMap; |
| 1260 | 1277 |
checkConcept<GraphMap<_Graph, typename _Graph::Edge, bool>, |
| 1261 | 1278 |
BoolEdgeMap >(); |
| 1262 | 1279 |
} { // Dummy map test
|
| 1263 | 1280 |
typedef typename _Graph::template EdgeMap<Dummy> DummyEdgeMap; |
| 1264 | 1281 |
checkConcept<GraphMap<_Graph, typename _Graph::Edge, Dummy>, |
| 1265 | 1282 |
DummyEdgeMap >(); |
| 1266 | 1283 |
} |
| 1267 | 1284 |
} |
| 1268 | 1285 |
|
| 1269 |
_Graph& graph; |
|
| 1286 |
const _Graph& graph; |
|
| 1270 | 1287 |
}; |
| 1271 | 1288 |
}; |
| 1272 | 1289 |
|
| 1273 |
/// \brief |
|
| 1290 |
/// \brief Skeleton class for extendable directed graphs. |
|
| 1274 | 1291 |
/// |
| 1275 |
/// This class provides beside the core digraph features digraph |
|
| 1276 |
/// extendable interface for the digraph structure. The main |
|
| 1277 |
/// difference between the base and this interface is that the |
|
| 1278 |
/// digraph alterations should handled already on this level. |
|
| 1279 |
template <typename _Base = BaseDigraphComponent> |
|
| 1280 |
class ExtendableDigraphComponent : public _Base {
|
|
| 1292 |
/// This class describes the interface of extendable directed graphs. |
|
| 1293 |
/// It extends \ref BaseDigraphComponent with functions for adding |
|
| 1294 |
/// nodes and arcs to the digraph. |
|
| 1295 |
/// This concept requires \ref AlterableDigraphComponent. |
|
| 1296 |
template <typename BAS = BaseDigraphComponent> |
|
| 1297 |
class ExtendableDigraphComponent : public BAS {
|
|
| 1281 | 1298 |
public: |
| 1282 |
typedef |
|
| 1299 |
typedef BAS Base; |
|
| 1283 | 1300 |
|
| 1284 |
typedef typename _Base::Node Node; |
|
| 1285 |
typedef typename _Base::Arc Arc; |
|
| 1301 |
typedef typename Base::Node Node; |
|
| 1302 |
typedef typename Base::Arc Arc; |
|
| 1286 | 1303 |
|
| 1287 |
/// \brief |
|
| 1304 |
/// \brief Add a new node to the digraph. |
|
| 1288 | 1305 |
/// |
| 1289 |
/// Adds a new node to the digraph. |
|
| 1290 |
/// |
|
| 1306 |
/// This function adds a new node to the digraph. |
|
| 1291 | 1307 |
Node addNode() {
|
| 1292 | 1308 |
return INVALID; |
| 1293 | 1309 |
} |
| 1294 | 1310 |
|
| 1295 |
/// \brief |
|
| 1311 |
/// \brief Add a new arc connecting the given two nodes. |
|
| 1296 | 1312 |
/// |
| 1297 |
/// |
|
| 1313 |
/// This function adds a new arc connecting the given two nodes |
|
| 1314 |
/// of the digraph. |
|
| 1298 | 1315 |
Arc addArc(const Node&, const Node&) {
|
| 1299 | 1316 |
return INVALID; |
| 1300 | 1317 |
} |
| 1301 | 1318 |
|
| 1302 | 1319 |
template <typename _Digraph> |
| 1303 | 1320 |
struct Constraints {
|
| 1304 | 1321 |
void constraints() {
|
| 1305 | 1322 |
checkConcept<Base, _Digraph>(); |
| 1306 | 1323 |
typename _Digraph::Node node_a, node_b; |
| 1307 | 1324 |
node_a = digraph.addNode(); |
| 1308 | 1325 |
node_b = digraph.addNode(); |
| 1309 | 1326 |
typename _Digraph::Arc arc; |
| 1310 | 1327 |
arc = digraph.addArc(node_a, node_b); |
| 1311 | 1328 |
} |
| 1312 | 1329 |
|
| 1313 | 1330 |
_Digraph& digraph; |
| 1314 | 1331 |
}; |
| 1315 | 1332 |
}; |
| 1316 | 1333 |
|
| 1317 |
/// \brief |
|
| 1334 |
/// \brief Skeleton class for extendable undirected graphs. |
|
| 1318 | 1335 |
/// |
| 1319 |
/// This class provides beside the core undirected graph features |
|
| 1320 |
/// core undircted graph extend interface for the graph structure. |
|
| 1321 |
/// The main difference between the base and this interface is |
|
| 1322 |
/// that the graph alterations should handled already on this |
|
| 1323 |
/// level. |
|
| 1324 |
template <typename _Base = BaseGraphComponent> |
|
| 1325 |
class |
|
| 1336 |
/// This class describes the interface of extendable undirected graphs. |
|
| 1337 |
/// It extends \ref BaseGraphComponent with functions for adding |
|
| 1338 |
/// nodes and edges to the graph. |
|
| 1339 |
/// This concept requires \ref AlterableGraphComponent. |
|
| 1340 |
template <typename BAS = BaseGraphComponent> |
|
| 1341 |
class ExtendableGraphComponent : public BAS {
|
|
| 1326 | 1342 |
public: |
| 1327 | 1343 |
|
| 1328 |
typedef _Base Base; |
|
| 1329 |
typedef typename _Base::Node Node; |
|
| 1330 |
typedef |
|
| 1344 |
typedef BAS Base; |
|
| 1345 |
typedef typename Base::Node Node; |
|
| 1346 |
typedef typename Base::Edge Edge; |
|
| 1331 | 1347 |
|
| 1332 |
/// \brief |
|
| 1348 |
/// \brief Add a new node to the digraph. |
|
| 1333 | 1349 |
/// |
| 1334 |
/// Adds a new node to the graph. |
|
| 1335 |
/// |
|
| 1350 |
/// This function adds a new node to the digraph. |
|
| 1336 | 1351 |
Node addNode() {
|
| 1337 | 1352 |
return INVALID; |
| 1338 | 1353 |
} |
| 1339 | 1354 |
|
| 1340 |
/// \brief |
|
| 1355 |
/// \brief Add a new edge connecting the given two nodes. |
|
| 1341 | 1356 |
/// |
| 1342 |
/// Adds a new arc connects the the given two nodes. |
|
| 1343 |
Edge addArc(const Node&, const Node&) {
|
|
| 1357 |
/// This function adds a new edge connecting the given two nodes |
|
| 1358 |
/// of the graph. |
|
| 1359 |
Edge addEdge(const Node&, const Node&) {
|
|
| 1344 | 1360 |
return INVALID; |
| 1345 | 1361 |
} |
| 1346 | 1362 |
|
| 1347 | 1363 |
template <typename _Graph> |
| 1348 | 1364 |
struct Constraints {
|
| 1349 | 1365 |
void constraints() {
|
| 1350 | 1366 |
checkConcept<Base, _Graph>(); |
| 1351 | 1367 |
typename _Graph::Node node_a, node_b; |
| 1352 | 1368 |
node_a = graph.addNode(); |
| 1353 | 1369 |
node_b = graph.addNode(); |
| 1354 | 1370 |
typename _Graph::Edge edge; |
| 1355 | 1371 |
edge = graph.addEdge(node_a, node_b); |
| 1356 | 1372 |
} |
| 1357 | 1373 |
|
| 1358 | 1374 |
_Graph& graph; |
| 1359 | 1375 |
}; |
| 1360 | 1376 |
}; |
| 1361 | 1377 |
|
| 1362 |
/// \brief |
|
| 1378 |
/// \brief Skeleton class for erasable directed graphs. |
|
| 1363 | 1379 |
/// |
| 1364 |
/// This class provides beside the core digraph features core erase |
|
| 1365 |
/// functions for the digraph structure. The main difference between |
|
| 1366 |
/// the base and this interface is that the digraph alterations |
|
| 1367 |
/// should handled already on this level. |
|
| 1368 |
template <typename _Base = BaseDigraphComponent> |
|
| 1369 |
class ErasableDigraphComponent : public _Base {
|
|
| 1380 |
/// This class describes the interface of erasable directed graphs. |
|
| 1381 |
/// It extends \ref BaseDigraphComponent with functions for removing |
|
| 1382 |
/// nodes and arcs from the digraph. |
|
| 1383 |
/// This concept requires \ref AlterableDigraphComponent. |
|
| 1384 |
template <typename BAS = BaseDigraphComponent> |
|
| 1385 |
class ErasableDigraphComponent : public BAS {
|
|
| 1370 | 1386 |
public: |
| 1371 | 1387 |
|
| 1372 |
typedef |
|
| 1388 |
typedef BAS Base; |
|
| 1373 | 1389 |
typedef typename Base::Node Node; |
| 1374 | 1390 |
typedef typename Base::Arc Arc; |
| 1375 | 1391 |
|
| 1376 | 1392 |
/// \brief Erase a node from the digraph. |
| 1377 | 1393 |
/// |
| 1378 |
/// Erase a node from the digraph. This function should |
|
| 1379 |
/// erase all arcs connecting to the node. |
|
| 1394 |
/// This function erases the given node from the digraph and all arcs |
|
| 1395 |
/// connected to the node. |
|
| 1380 | 1396 |
void erase(const Node&) {}
|
| 1381 | 1397 |
|
| 1382 | 1398 |
/// \brief Erase an arc from the digraph. |
| 1383 | 1399 |
/// |
| 1384 |
/// Erase an arc from the digraph. |
|
| 1385 |
/// |
|
| 1400 |
/// This function erases the given arc from the digraph. |
|
| 1386 | 1401 |
void erase(const Arc&) {}
|
| 1387 | 1402 |
|
| 1388 | 1403 |
template <typename _Digraph> |
| 1389 | 1404 |
struct Constraints {
|
| 1390 | 1405 |
void constraints() {
|
| 1391 | 1406 |
checkConcept<Base, _Digraph>(); |
| 1392 |
typename _Digraph::Node node; |
|
| 1407 |
const typename _Digraph::Node node(INVALID); |
|
| 1393 | 1408 |
digraph.erase(node); |
| 1394 |
typename _Digraph::Arc arc; |
|
| 1409 |
const typename _Digraph::Arc arc(INVALID); |
|
| 1395 | 1410 |
digraph.erase(arc); |
| 1396 | 1411 |
} |
| 1397 | 1412 |
|
| 1398 | 1413 |
_Digraph& digraph; |
| 1399 | 1414 |
}; |
| 1400 | 1415 |
}; |
| 1401 | 1416 |
|
| 1402 |
/// \brief |
|
| 1417 |
/// \brief Skeleton class for erasable undirected graphs. |
|
| 1403 | 1418 |
/// |
| 1404 |
/// This class provides beside the core undirected graph features |
|
| 1405 |
/// core erase functions for the undirceted graph structure. The |
|
| 1406 |
/// main difference between the base and this interface is that |
|
| 1407 |
/// the graph alterations should handled already on this level. |
|
| 1408 |
template <typename _Base = BaseGraphComponent> |
|
| 1409 |
class ErasableGraphComponent : public _Base {
|
|
| 1419 |
/// This class describes the interface of erasable undirected graphs. |
|
| 1420 |
/// It extends \ref BaseGraphComponent with functions for removing |
|
| 1421 |
/// nodes and edges from the graph. |
|
| 1422 |
/// This concept requires \ref AlterableGraphComponent. |
|
| 1423 |
template <typename BAS = BaseGraphComponent> |
|
| 1424 |
class ErasableGraphComponent : public BAS {
|
|
| 1410 | 1425 |
public: |
| 1411 | 1426 |
|
| 1412 |
typedef |
|
| 1427 |
typedef BAS Base; |
|
| 1413 | 1428 |
typedef typename Base::Node Node; |
| 1414 | 1429 |
typedef typename Base::Edge Edge; |
| 1415 | 1430 |
|
| 1416 | 1431 |
/// \brief Erase a node from the graph. |
| 1417 | 1432 |
/// |
| 1418 |
/// Erase a node from the graph. This function should erase |
|
| 1419 |
/// arcs connecting to the node. |
|
| 1433 |
/// This function erases the given node from the graph and all edges |
|
| 1434 |
/// connected to the node. |
|
| 1420 | 1435 |
void erase(const Node&) {}
|
| 1421 | 1436 |
|
| 1422 |
/// \brief Erase an |
|
| 1437 |
/// \brief Erase an edge from the digraph. |
|
| 1423 | 1438 |
/// |
| 1424 |
/// Erase an arc from the graph. |
|
| 1425 |
/// |
|
| 1439 |
/// This function erases the given edge from the digraph. |
|
| 1426 | 1440 |
void erase(const Edge&) {}
|
| 1427 | 1441 |
|
| 1428 | 1442 |
template <typename _Graph> |
| 1429 | 1443 |
struct Constraints {
|
| 1430 | 1444 |
void constraints() {
|
| 1431 | 1445 |
checkConcept<Base, _Graph>(); |
| 1432 |
typename _Graph::Node node; |
|
| 1446 |
const typename _Graph::Node node(INVALID); |
|
| 1433 | 1447 |
graph.erase(node); |
| 1434 |
typename _Graph::Edge edge; |
|
| 1448 |
const typename _Graph::Edge edge(INVALID); |
|
| 1435 | 1449 |
graph.erase(edge); |
| 1436 | 1450 |
} |
| 1437 | 1451 |
|
| 1438 | 1452 |
_Graph& graph; |
| 1439 | 1453 |
}; |
| 1440 | 1454 |
}; |
| 1441 | 1455 |
|
| 1442 |
/// \brief |
|
| 1456 |
/// \brief Skeleton class for clearable directed graphs. |
|
| 1443 | 1457 |
/// |
| 1444 |
/// This class provides beside the core digraph features core clear |
|
| 1445 |
/// functions for the digraph structure. The main difference between |
|
| 1446 |
/// the base and this interface is that the digraph alterations |
|
| 1447 |
/// should handled already on this level. |
|
| 1448 |
template <typename _Base = BaseDigraphComponent> |
|
| 1449 |
class ClearableDigraphComponent : public _Base {
|
|
| 1458 |
/// This class describes the interface of clearable directed graphs. |
|
| 1459 |
/// It extends \ref BaseDigraphComponent with a function for clearing |
|
| 1460 |
/// the digraph. |
|
| 1461 |
/// This concept requires \ref AlterableDigraphComponent. |
|
| 1462 |
template <typename BAS = BaseDigraphComponent> |
|
| 1463 |
class ClearableDigraphComponent : public BAS {
|
|
| 1450 | 1464 |
public: |
| 1451 | 1465 |
|
| 1452 |
typedef |
|
| 1466 |
typedef BAS Base; |
|
| 1453 | 1467 |
|
| 1454 | 1468 |
/// \brief Erase all nodes and arcs from the digraph. |
| 1455 | 1469 |
/// |
| 1456 |
/// Erase all nodes and arcs from the digraph. |
|
| 1457 |
/// |
|
| 1470 |
/// This function erases all nodes and arcs from the digraph. |
|
| 1458 | 1471 |
void clear() {}
|
| 1459 | 1472 |
|
| 1460 | 1473 |
template <typename _Digraph> |
| 1461 | 1474 |
struct Constraints {
|
| 1462 | 1475 |
void constraints() {
|
| 1463 | 1476 |
checkConcept<Base, _Digraph>(); |
| 1464 | 1477 |
digraph.clear(); |
| 1465 | 1478 |
} |
| 1466 | 1479 |
|
| 1467 |
_Digraph digraph; |
|
| 1480 |
_Digraph& digraph; |
|
| 1468 | 1481 |
}; |
| 1469 | 1482 |
}; |
| 1470 | 1483 |
|
| 1471 |
/// \brief |
|
| 1484 |
/// \brief Skeleton class for clearable undirected graphs. |
|
| 1472 | 1485 |
/// |
| 1473 |
/// This class provides beside the core undirected graph features |
|
| 1474 |
/// core clear functions for the undirected graph structure. The |
|
| 1475 |
/// main difference between the base and this interface is that |
|
| 1476 |
/// the graph alterations should handled already on this level. |
|
| 1477 |
template <typename _Base = BaseGraphComponent> |
|
| 1478 |
class ClearableGraphComponent : public ClearableDigraphComponent<_Base> {
|
|
| 1486 |
/// This class describes the interface of clearable undirected graphs. |
|
| 1487 |
/// It extends \ref BaseGraphComponent with a function for clearing |
|
| 1488 |
/// the graph. |
|
| 1489 |
/// This concept requires \ref AlterableGraphComponent. |
|
| 1490 |
template <typename BAS = BaseGraphComponent> |
|
| 1491 |
class ClearableGraphComponent : public ClearableDigraphComponent<BAS> {
|
|
| 1479 | 1492 |
public: |
| 1480 | 1493 |
|
| 1481 |
typedef |
|
| 1494 |
typedef BAS Base; |
|
| 1495 |
|
|
| 1496 |
/// \brief Erase all nodes and edges from the graph. |
|
| 1497 |
/// |
|
| 1498 |
/// This function erases all nodes and edges from the graph. |
|
| 1499 |
void clear() {}
|
|
| 1482 | 1500 |
|
| 1483 | 1501 |
template <typename _Graph> |
| 1484 | 1502 |
struct Constraints {
|
| 1485 | 1503 |
void constraints() {
|
| 1486 |
checkConcept< |
|
| 1504 |
checkConcept<Base, _Graph>(); |
|
| 1505 |
graph.clear(); |
|
| 1487 | 1506 |
} |
| 1488 | 1507 |
|
| 1489 |
_Graph graph; |
|
| 1508 |
_Graph& graph; |
|
| 1490 | 1509 |
}; |
| 1491 | 1510 |
}; |
| 1492 | 1511 |
|
| 1493 | 1512 |
} |
| 1494 | 1513 |
|
| 1495 | 1514 |
} |
| 1496 | 1515 |
|
| 1497 | 1516 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 |
#ifndef LEMON_CONCEPTS_HEAP_H |
|
| 20 |
#define LEMON_CONCEPTS_HEAP_H |
|
| 21 |
|
|
| 19 | 22 |
///\ingroup concept |
| 20 | 23 |
///\file |
| 21 | 24 |
///\brief The concept of heaps. |
| 22 | 25 |
|
| 23 |
#ifndef LEMON_CONCEPT_HEAP_H |
|
| 24 |
#define LEMON_CONCEPT_HEAP_H |
|
| 25 |
|
|
| 26 | 26 |
#include <lemon/core.h> |
| 27 |
#include <lemon/concept_check.h> |
|
| 27 | 28 |
|
| 28 | 29 |
namespace lemon {
|
| 29 | 30 |
|
| 30 | 31 |
namespace concepts {
|
| 31 | 32 |
|
| 32 | 33 |
/// \addtogroup concept |
| 33 | 34 |
/// @{
|
| 34 | 35 |
|
| 35 | 36 |
/// \brief The heap concept. |
| 36 | 37 |
/// |
| 37 |
/// Concept class describing the main interface of heaps. |
|
| 38 |
template <typename Priority, typename ItemIntMap> |
|
| 38 |
/// This concept class describes the main interface of heaps. |
|
| 39 |
/// The various \ref heaps "heap structures" are efficient |
|
| 40 |
/// implementations of the abstract data type \e priority \e queue. |
|
| 41 |
/// They store items with specified values called \e priorities |
|
| 42 |
/// in such a way that finding and removing the item with minimum |
|
| 43 |
/// priority are efficient. The basic operations are adding and |
|
| 44 |
/// erasing items, changing the priority of an item, etc. |
|
| 45 |
/// |
|
| 46 |
/// Heaps are crucial in several algorithms, such as Dijkstra and Prim. |
|
| 47 |
/// Any class that conforms to this concept can be used easily in such |
|
| 48 |
/// algorithms. |
|
| 49 |
/// |
|
| 50 |
/// \tparam PR Type of the priorities of the items. |
|
| 51 |
/// \tparam IM A read-writable item map with \c int values, used |
|
| 52 |
/// internally to handle the cross references. |
|
| 53 |
/// \tparam CMP A functor class for comparing the priorities. |
|
| 54 |
/// The default is \c std::less<PR>. |
|
| 55 |
#ifdef DOXYGEN |
|
| 56 |
template <typename PR, typename IM, typename CMP> |
|
| 57 |
#else |
|
| 58 |
template <typename PR, typename IM, typename CMP = std::less<PR> > |
|
| 59 |
#endif |
|
| 39 | 60 |
class Heap {
|
| 40 | 61 |
public: |
| 41 | 62 |
|
| 63 |
/// Type of the item-int map. |
|
| 64 |
typedef IM ItemIntMap; |
|
| 65 |
/// Type of the priorities. |
|
| 66 |
typedef PR Prio; |
|
| 42 | 67 |
/// Type of the items stored in the heap. |
| 43 | 68 |
typedef typename ItemIntMap::Key Item; |
| 44 | 69 |
|
| 45 |
/// Type of the priorities. |
|
| 46 |
typedef Priority Prio; |
|
| 47 |
|
|
| 48 | 70 |
/// \brief Type to represent the states of the items. |
| 49 | 71 |
/// |
| 50 | 72 |
/// Each item has a state associated to it. It can be "in heap", |
| 51 |
/// "pre heap" or "post heap". The later two are indifferent |
|
| 52 |
/// from the point of view of the heap, but may be useful for |
|
| 53 |
/// |
|
| 73 |
/// "pre-heap" or "post-heap". The latter two are indifferent from the |
|
| 74 |
/// heap's point of view, but may be useful to the user. |
|
| 54 | 75 |
/// |
| 55 |
/// The \c ItemIntMap must be initialized in such a way, that it |
|
| 56 |
/// assigns \c PRE_HEAP (<tt>-1</tt>) to every item. |
|
| 76 |
/// The item-int map must be initialized in such way that it assigns |
|
| 77 |
/// \c PRE_HEAP (<tt>-1</tt>) to any element to be put in the heap. |
|
| 57 | 78 |
enum State {
|
| 58 |
IN_HEAP = 0, |
|
| 59 |
PRE_HEAP = -1, |
|
| 60 |
|
|
| 79 |
IN_HEAP = 0, ///< = 0. The "in heap" state constant. |
|
| 80 |
PRE_HEAP = -1, ///< = -1. The "pre-heap" state constant. |
|
| 81 |
POST_HEAP = -2 ///< = -2. The "post-heap" state constant. |
|
| 61 | 82 |
}; |
| 62 | 83 |
|
| 63 |
/// \brief |
|
| 84 |
/// \brief Constructor. |
|
| 64 | 85 |
/// |
| 65 |
/// |
|
| 86 |
/// Constructor. |
|
| 66 | 87 |
/// \param map A map that assigns \c int values to keys of type |
| 67 | 88 |
/// \c Item. It is used internally by the heap implementations to |
| 68 | 89 |
/// handle the cross references. The assigned value must be |
| 69 |
/// \c PRE_HEAP (<tt>-1</tt>) for |
|
| 90 |
/// \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 70 | 91 |
explicit Heap(ItemIntMap &map) {}
|
| 71 | 92 |
|
| 93 |
/// \brief Constructor. |
|
| 94 |
/// |
|
| 95 |
/// Constructor. |
|
| 96 |
/// \param map A map that assigns \c int values to keys of type |
|
| 97 |
/// \c Item. It is used internally by the heap implementations to |
|
| 98 |
/// handle the cross references. The assigned value must be |
|
| 99 |
/// \c PRE_HEAP (<tt>-1</tt>) for each item. |
|
| 100 |
/// \param comp The function object used for comparing the priorities. |
|
| 101 |
explicit Heap(ItemIntMap &map, const CMP &comp) {}
|
|
| 102 |
|
|
| 72 | 103 |
/// \brief The number of items stored in the heap. |
| 73 | 104 |
/// |
| 74 |
/// |
|
| 105 |
/// This function returns the number of items stored in the heap. |
|
| 75 | 106 |
int size() const { return 0; }
|
| 76 | 107 |
|
| 77 |
/// \brief |
|
| 108 |
/// \brief Check if the heap is empty. |
|
| 78 | 109 |
/// |
| 79 |
/// |
|
| 110 |
/// This function returns \c true if the heap is empty. |
|
| 80 | 111 |
bool empty() const { return false; }
|
| 81 | 112 |
|
| 82 |
/// \brief |
|
| 113 |
/// \brief Make the heap empty. |
|
| 83 | 114 |
/// |
| 84 |
/// Makes the heap empty. |
|
| 85 |
void clear(); |
|
| 115 |
/// This functon makes the heap empty. |
|
| 116 |
/// It does not change the cross reference map. If you want to reuse |
|
| 117 |
/// a heap that is not surely empty, you should first clear it and |
|
| 118 |
/// then you should set the cross reference map to \c PRE_HEAP |
|
| 119 |
/// for each item. |
|
| 120 |
void clear() {}
|
|
| 86 | 121 |
|
| 87 |
/// \brief |
|
| 122 |
/// \brief Insert an item into the heap with the given priority. |
|
| 88 | 123 |
/// |
| 89 |
/// |
|
| 124 |
/// This function inserts the given item into the heap with the |
|
| 125 |
/// given priority. |
|
| 90 | 126 |
/// \param i The item to insert. |
| 91 | 127 |
/// \param p The priority of the item. |
| 128 |
/// \pre \e i must not be stored in the heap. |
|
| 92 | 129 |
void push(const Item &i, const Prio &p) {}
|
| 93 | 130 |
|
| 94 |
/// \brief |
|
| 131 |
/// \brief Return the item having minimum priority. |
|
| 95 | 132 |
/// |
| 96 |
/// |
|
| 133 |
/// This function returns the item having minimum priority. |
|
| 97 | 134 |
/// \pre The heap must be non-empty. |
| 98 | 135 |
Item top() const {}
|
| 99 | 136 |
|
| 100 | 137 |
/// \brief The minimum priority. |
| 101 | 138 |
/// |
| 102 |
/// |
|
| 139 |
/// This function returns the minimum priority. |
|
| 103 | 140 |
/// \pre The heap must be non-empty. |
| 104 | 141 |
Prio prio() const {}
|
| 105 | 142 |
|
| 106 |
/// \brief |
|
| 143 |
/// \brief Remove the item having minimum priority. |
|
| 107 | 144 |
/// |
| 108 |
/// |
|
| 145 |
/// This function removes the item having minimum priority. |
|
| 109 | 146 |
/// \pre The heap must be non-empty. |
| 110 | 147 |
void pop() {}
|
| 111 | 148 |
|
| 112 |
/// \brief |
|
| 149 |
/// \brief Remove the given item from the heap. |
|
| 113 | 150 |
/// |
| 114 |
/// |
|
| 151 |
/// This function removes the given item from the heap if it is |
|
| 152 |
/// already stored. |
|
| 115 | 153 |
/// \param i The item to delete. |
| 154 |
/// \pre \e i must be in the heap. |
|
| 116 | 155 |
void erase(const Item &i) {}
|
| 117 | 156 |
|
| 118 |
/// \brief The priority of |
|
| 157 |
/// \brief The priority of the given item. |
|
| 119 | 158 |
/// |
| 120 |
/// Returns the priority of the given item. |
|
| 121 |
/// \pre \c i must be in the heap. |
|
| 159 |
/// This function returns the priority of the given item. |
|
| 122 | 160 |
/// \param i The item. |
| 161 |
/// \pre \e i must be in the heap. |
|
| 123 | 162 |
Prio operator[](const Item &i) const {}
|
| 124 | 163 |
|
| 125 |
/// \brief |
|
| 164 |
/// \brief Set the priority of an item or insert it, if it is |
|
| 126 | 165 |
/// not stored in the heap. |
| 127 | 166 |
/// |
| 128 | 167 |
/// This method sets the priority of the given item if it is |
| 129 |
/// already stored in the heap. |
|
| 130 |
/// Otherwise it inserts the given item with the given priority. |
|
| 168 |
/// already stored in the heap. Otherwise it inserts the given |
|
| 169 |
/// item into the heap with the given priority. |
|
| 131 | 170 |
/// |
| 132 | 171 |
/// \param i The item. |
| 133 | 172 |
/// \param p The priority. |
| 134 | 173 |
void set(const Item &i, const Prio &p) {}
|
| 135 | 174 |
|
| 136 |
/// \brief |
|
| 175 |
/// \brief Decrease the priority of an item to the given value. |
|
| 137 | 176 |
/// |
| 138 |
/// Decreases the priority of an item to the given value. |
|
| 139 |
/// \pre \c i must be stored in the heap with priority at least \c p. |
|
| 177 |
/// This function decreases the priority of an item to the given value. |
|
| 140 | 178 |
/// \param i The item. |
| 141 | 179 |
/// \param p The priority. |
| 180 |
/// \pre \e i must be stored in the heap with priority at least \e p. |
|
| 142 | 181 |
void decrease(const Item &i, const Prio &p) {}
|
| 143 | 182 |
|
| 144 |
/// \brief |
|
| 183 |
/// \brief Increase the priority of an item to the given value. |
|
| 145 | 184 |
/// |
| 146 |
/// Increases the priority of an item to the given value. |
|
| 147 |
/// \pre \c i must be stored in the heap with priority at most \c p. |
|
| 185 |
/// This function increases the priority of an item to the given value. |
|
| 148 | 186 |
/// \param i The item. |
| 149 | 187 |
/// \param p The priority. |
| 188 |
/// \pre \e i must be stored in the heap with priority at most \e p. |
|
| 150 | 189 |
void increase(const Item &i, const Prio &p) {}
|
| 151 | 190 |
|
| 152 |
/// \brief Returns if an item is in, has already been in, or has |
|
| 153 |
/// never been in the heap. |
|
| 191 |
/// \brief Return the state of an item. |
|
| 154 | 192 |
/// |
| 155 | 193 |
/// This method returns \c PRE_HEAP if the given item has never |
| 156 | 194 |
/// been in the heap, \c IN_HEAP if it is in the heap at the moment, |
| 157 | 195 |
/// and \c POST_HEAP otherwise. |
| 158 | 196 |
/// In the latter case it is possible that the item will get back |
| 159 | 197 |
/// to the heap again. |
| 160 | 198 |
/// \param i The item. |
| 161 | 199 |
State state(const Item &i) const {}
|
| 162 | 200 |
|
| 163 |
/// \brief |
|
| 201 |
/// \brief Set the state of an item in the heap. |
|
| 164 | 202 |
/// |
| 165 |
/// Sets the state of the given item in the heap. It can be used |
|
| 166 |
/// to manually clear the heap when it is important to achive the |
|
| 167 |
/// |
|
| 203 |
/// This function sets the state of the given item in the heap. |
|
| 204 |
/// It can be used to manually clear the heap when it is important |
|
| 205 |
/// to achive better time complexity. |
|
| 168 | 206 |
/// \param i The item. |
| 169 | 207 |
/// \param st The state. It should not be \c IN_HEAP. |
| 170 | 208 |
void state(const Item& i, State st) {}
|
| 171 | 209 |
|
| 172 | 210 |
|
| 173 | 211 |
template <typename _Heap> |
| 174 | 212 |
struct Constraints {
|
| 175 | 213 |
public: |
| 176 | 214 |
void constraints() {
|
| 177 | 215 |
typedef typename _Heap::Item OwnItem; |
| 178 | 216 |
typedef typename _Heap::Prio OwnPrio; |
| 179 | 217 |
typedef typename _Heap::State OwnState; |
| 180 | 218 |
|
| 181 | 219 |
Item item; |
| 182 | 220 |
Prio prio; |
| 183 | 221 |
item=Item(); |
| 184 | 222 |
prio=Prio(); |
| 185 | 223 |
ignore_unused_variable_warning(item); |
| 186 | 224 |
ignore_unused_variable_warning(prio); |
| 187 | 225 |
|
| 188 | 226 |
OwnItem own_item; |
| 189 | 227 |
OwnPrio own_prio; |
| 190 | 228 |
OwnState own_state; |
| 191 | 229 |
own_item=Item(); |
| 192 | 230 |
own_prio=Prio(); |
| 193 | 231 |
ignore_unused_variable_warning(own_item); |
| 194 | 232 |
ignore_unused_variable_warning(own_prio); |
| 195 | 233 |
ignore_unused_variable_warning(own_state); |
| 196 | 234 |
|
| 197 | 235 |
_Heap heap1(map); |
| 198 | 236 |
_Heap heap2 = heap1; |
| 199 | 237 |
ignore_unused_variable_warning(heap1); |
| 200 | 238 |
ignore_unused_variable_warning(heap2); |
| 201 | 239 |
|
| 202 | 240 |
int s = heap.size(); |
| 203 | 241 |
ignore_unused_variable_warning(s); |
| 204 | 242 |
bool e = heap.empty(); |
| 205 | 243 |
ignore_unused_variable_warning(e); |
| 206 | 244 |
|
| 207 | 245 |
prio = heap.prio(); |
| 208 | 246 |
item = heap.top(); |
| 209 | 247 |
prio = heap[item]; |
| 210 | 248 |
own_prio = heap.prio(); |
| 211 | 249 |
own_item = heap.top(); |
| 212 | 250 |
own_prio = heap[own_item]; |
| 213 | 251 |
|
| 214 | 252 |
heap.push(item, prio); |
| 215 | 253 |
heap.push(own_item, own_prio); |
| 216 | 254 |
heap.pop(); |
| 217 | 255 |
|
| 218 | 256 |
heap.set(item, prio); |
| 219 | 257 |
heap.decrease(item, prio); |
| 220 | 258 |
heap.increase(item, prio); |
| 221 | 259 |
heap.set(own_item, own_prio); |
| 222 | 260 |
heap.decrease(own_item, own_prio); |
| 223 | 261 |
heap.increase(own_item, own_prio); |
| 224 | 262 |
|
| 225 | 263 |
heap.erase(item); |
| 226 | 264 |
heap.erase(own_item); |
| 227 | 265 |
heap.clear(); |
| 228 | 266 |
|
| 229 | 267 |
own_state = heap.state(own_item); |
| 230 | 268 |
heap.state(own_item, own_state); |
| 231 | 269 |
|
| 232 | 270 |
own_state = _Heap::PRE_HEAP; |
| 233 | 271 |
own_state = _Heap::IN_HEAP; |
| 234 | 272 |
own_state = _Heap::POST_HEAP; |
| 235 | 273 |
} |
| 236 | 274 |
|
| 237 | 275 |
_Heap& heap; |
| 238 | 276 |
ItemIntMap& map; |
| 239 | 277 |
}; |
| 240 | 278 |
}; |
| 241 | 279 |
|
| 242 | 280 |
/// @} |
| 243 | 281 |
} // namespace lemon |
| 244 | 282 |
} |
| 245 |
#endif |
|
| 283 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 |
#ifndef LEMON_CONCEPT_MAPS_H |
|
| 20 |
#define LEMON_CONCEPT_MAPS_H |
|
| 19 |
#ifndef LEMON_CONCEPTS_MAPS_H |
|
| 20 |
#define LEMON_CONCEPTS_MAPS_H |
|
| 21 | 21 |
|
| 22 | 22 |
#include <lemon/core.h> |
| 23 | 23 |
#include <lemon/concept_check.h> |
| 24 | 24 |
|
| 25 | 25 |
///\ingroup map_concepts |
| 26 | 26 |
///\file |
| 27 | 27 |
///\brief The concept of maps. |
| 28 | 28 |
|
| 29 | 29 |
namespace lemon {
|
| 30 | 30 |
|
| 31 | 31 |
namespace concepts {
|
| 32 | 32 |
|
| 33 | 33 |
/// \addtogroup map_concepts |
| 34 | 34 |
/// @{
|
| 35 | 35 |
|
| 36 | 36 |
/// Readable map concept |
| 37 | 37 |
|
| 38 | 38 |
/// Readable map concept. |
| 39 | 39 |
/// |
| 40 | 40 |
template<typename K, typename T> |
| 41 | 41 |
class ReadMap |
| 42 | 42 |
{
|
| 43 | 43 |
public: |
| 44 | 44 |
/// The key type of the map. |
| 45 | 45 |
typedef K Key; |
| 46 | 46 |
/// \brief The value type of the map. |
| 47 | 47 |
/// (The type of objects associated with the keys). |
| 48 | 48 |
typedef T Value; |
| 49 | 49 |
|
| 50 | 50 |
/// Returns the value associated with the given key. |
| 51 | 51 |
Value operator[](const Key &) const {
|
| 52 | 52 |
return *static_cast<Value *>(0); |
| 53 | 53 |
} |
| 54 | 54 |
|
| 55 | 55 |
template<typename _ReadMap> |
| 56 | 56 |
struct Constraints {
|
| 57 | 57 |
void constraints() {
|
| 58 | 58 |
Value val = m[key]; |
| 59 | 59 |
val = m[key]; |
| 60 | 60 |
typename _ReadMap::Value own_val = m[own_key]; |
| 61 | 61 |
own_val = m[own_key]; |
| 62 | 62 |
|
| 63 | 63 |
ignore_unused_variable_warning(key); |
| 64 | 64 |
ignore_unused_variable_warning(val); |
| 65 | 65 |
ignore_unused_variable_warning(own_key); |
| 66 | 66 |
ignore_unused_variable_warning(own_val); |
| 67 | 67 |
} |
| 68 | 68 |
const Key& key; |
| 69 | 69 |
const typename _ReadMap::Key& own_key; |
| 70 | 70 |
const _ReadMap& m; |
| 71 | 71 |
}; |
| 72 | 72 |
|
| 73 | 73 |
}; |
| 74 | 74 |
|
| 75 | 75 |
|
| 76 | 76 |
/// Writable map concept |
| 77 | 77 |
|
| 78 | 78 |
/// Writable map concept. |
| 79 | 79 |
/// |
| 80 | 80 |
template<typename K, typename T> |
| 81 | 81 |
class WriteMap |
| 82 | 82 |
{
|
| 83 | 83 |
public: |
| 84 | 84 |
/// The key type of the map. |
| 85 | 85 |
typedef K Key; |
| 86 | 86 |
/// \brief The value type of the map. |
| 87 | 87 |
/// (The type of objects associated with the keys). |
| 88 | 88 |
typedef T Value; |
| 89 | 89 |
|
| 90 | 90 |
/// Sets the value associated with the given key. |
| 91 | 91 |
void set(const Key &, const Value &) {}
|
| 92 | 92 |
|
| 93 | 93 |
/// Default constructor. |
| 94 | 94 |
WriteMap() {}
|
| 95 | 95 |
|
| 96 | 96 |
template <typename _WriteMap> |
| 97 | 97 |
struct Constraints {
|
| 98 | 98 |
void constraints() {
|
| 99 | 99 |
m.set(key, val); |
| 100 | 100 |
m.set(own_key, own_val); |
| 101 | 101 |
|
| 102 | 102 |
ignore_unused_variable_warning(key); |
| 103 | 103 |
ignore_unused_variable_warning(val); |
| 104 | 104 |
ignore_unused_variable_warning(own_key); |
| 105 | 105 |
ignore_unused_variable_warning(own_val); |
| 106 | 106 |
} |
| 107 | 107 |
const Key& key; |
| 108 | 108 |
const Value& val; |
| 109 | 109 |
const typename _WriteMap::Key& own_key; |
| 110 | 110 |
const typename _WriteMap::Value& own_val; |
| 111 | 111 |
_WriteMap& m; |
| 112 | 112 |
}; |
| 113 | 113 |
}; |
| 114 | 114 |
|
| 115 | 115 |
/// Read/writable map concept |
| 116 | 116 |
|
| 117 | 117 |
/// Read/writable map concept. |
| 118 | 118 |
/// |
| 119 | 119 |
template<typename K, typename T> |
| 120 | 120 |
class ReadWriteMap : public ReadMap<K,T>, |
| 121 | 121 |
public WriteMap<K,T> |
| 122 | 122 |
{
|
| 123 | 123 |
public: |
| 124 | 124 |
/// The key type of the map. |
| 125 | 125 |
typedef K Key; |
| 126 | 126 |
/// \brief The value type of the map. |
| 127 | 127 |
/// (The type of objects associated with the keys). |
| 128 | 128 |
typedef T Value; |
| 129 | 129 |
|
| 130 | 130 |
/// Returns the value associated with the given key. |
| 131 | 131 |
Value operator[](const Key &) const {
|
| 132 | 132 |
return *static_cast<Value *>(0); |
| 133 | 133 |
} |
| 134 | 134 |
|
| 135 | 135 |
/// Sets the value associated with the given key. |
| 136 | 136 |
void set(const Key &, const Value &) {}
|
| 137 | 137 |
|
| 138 | 138 |
template<typename _ReadWriteMap> |
| 139 | 139 |
struct Constraints {
|
| 140 | 140 |
void constraints() {
|
| 141 | 141 |
checkConcept<ReadMap<K, T>, _ReadWriteMap >(); |
| 142 | 142 |
checkConcept<WriteMap<K, T>, _ReadWriteMap >(); |
| 143 | 143 |
} |
| 144 | 144 |
}; |
| 145 | 145 |
}; |
| 146 | 146 |
|
| 147 | 147 |
|
| 148 | 148 |
/// Dereferable map concept |
| 149 | 149 |
|
| 150 | 150 |
/// Dereferable map concept. |
| 151 | 151 |
/// |
| 152 | 152 |
template<typename K, typename T, typename R, typename CR> |
| 153 | 153 |
class ReferenceMap : public ReadWriteMap<K,T> |
| 154 | 154 |
{
|
| 155 | 155 |
public: |
| 156 | 156 |
/// Tag for reference maps. |
| 157 | 157 |
typedef True ReferenceMapTag; |
| 158 | 158 |
/// The key type of the map. |
| 159 | 159 |
typedef K Key; |
| 160 | 160 |
/// \brief The value type of the map. |
| 161 | 161 |
/// (The type of objects associated with the keys). |
| 162 | 162 |
typedef T Value; |
| 163 | 163 |
/// The reference type of the map. |
| 164 | 164 |
typedef R Reference; |
| 165 | 165 |
/// The const reference type of the map. |
| 166 | 166 |
typedef CR ConstReference; |
| 167 | 167 |
|
| 168 | 168 |
public: |
| 169 | 169 |
|
| 170 | 170 |
/// Returns a reference to the value associated with the given key. |
| 171 | 171 |
Reference operator[](const Key &) {
|
| 172 | 172 |
return *static_cast<Value *>(0); |
| 173 | 173 |
} |
| 174 | 174 |
|
| 175 | 175 |
/// Returns a const reference to the value associated with the given key. |
| 176 | 176 |
ConstReference operator[](const Key &) const {
|
| 177 | 177 |
return *static_cast<Value *>(0); |
| 178 | 178 |
} |
| 179 | 179 |
|
| 180 | 180 |
/// Sets the value associated with the given key. |
| 181 | 181 |
void set(const Key &k,const Value &t) { operator[](k)=t; }
|
| 182 | 182 |
|
| 183 | 183 |
template<typename _ReferenceMap> |
| 184 | 184 |
struct Constraints {
|
| 185 |
|
|
| 185 |
typename enable_if<typename _ReferenceMap::ReferenceMapTag, void>::type |
|
| 186 |
constraints() {
|
|
| 186 | 187 |
checkConcept<ReadWriteMap<K, T>, _ReferenceMap >(); |
| 187 | 188 |
ref = m[key]; |
| 188 | 189 |
m[key] = val; |
| 189 | 190 |
m[key] = ref; |
| 190 | 191 |
m[key] = cref; |
| 191 | 192 |
own_ref = m[own_key]; |
| 192 | 193 |
m[own_key] = own_val; |
| 193 | 194 |
m[own_key] = own_ref; |
| 194 | 195 |
m[own_key] = own_cref; |
| 195 | 196 |
m[key] = m[own_key]; |
| 196 | 197 |
m[own_key] = m[key]; |
| 197 | 198 |
} |
| 198 | 199 |
const Key& key; |
| 199 | 200 |
Value& val; |
| 200 | 201 |
Reference ref; |
| 201 | 202 |
ConstReference cref; |
| 202 | 203 |
const typename _ReferenceMap::Key& own_key; |
| 203 | 204 |
typename _ReferenceMap::Value& own_val; |
| 204 | 205 |
typename _ReferenceMap::Reference own_ref; |
| 205 | 206 |
typename _ReferenceMap::ConstReference own_cref; |
| 206 | 207 |
_ReferenceMap& m; |
| 207 | 208 |
}; |
| 208 | 209 |
}; |
| 209 | 210 |
|
| 210 | 211 |
// @} |
| 211 | 212 |
|
| 212 | 213 |
} //namespace concepts |
| 213 | 214 |
|
| 214 | 215 |
} //namespace lemon |
| 215 | 216 |
|
| 216 |
#endif |
|
| 217 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
///\ingroup concept |
| 20 | 20 |
///\file |
| 21 | 21 |
///\brief Classes for representing paths in digraphs. |
| 22 | 22 |
/// |
| 23 | 23 |
|
| 24 |
#ifndef LEMON_CONCEPT_PATH_H |
|
| 25 |
#define LEMON_CONCEPT_PATH_H |
|
| 24 |
#ifndef LEMON_CONCEPTS_PATH_H |
|
| 25 |
#define LEMON_CONCEPTS_PATH_H |
|
| 26 | 26 |
|
| 27 | 27 |
#include <lemon/core.h> |
| 28 | 28 |
#include <lemon/concept_check.h> |
| 29 | 29 |
|
| 30 | 30 |
namespace lemon {
|
| 31 | 31 |
namespace concepts {
|
| 32 | 32 |
|
| 33 | 33 |
/// \addtogroup concept |
| 34 | 34 |
/// @{
|
| 35 | 35 |
|
| 36 | 36 |
/// \brief A skeleton structure for representing directed paths in |
| 37 | 37 |
/// a digraph. |
| 38 | 38 |
/// |
| 39 | 39 |
/// A skeleton structure for representing directed paths in a |
| 40 | 40 |
/// digraph. |
| 41 |
/// \tparam |
|
| 41 |
/// \tparam GR The digraph type in which the path is. |
|
| 42 | 42 |
/// |
| 43 | 43 |
/// In a sense, the path can be treated as a list of arcs. The |
| 44 | 44 |
/// lemon path type stores just this list. As a consequence it |
| 45 | 45 |
/// cannot enumerate the nodes in the path and the zero length |
| 46 | 46 |
/// paths cannot store the source. |
| 47 | 47 |
/// |
| 48 |
template <typename |
|
| 48 |
template <typename GR> |
|
| 49 | 49 |
class Path {
|
| 50 | 50 |
public: |
| 51 | 51 |
|
| 52 | 52 |
/// Type of the underlying digraph. |
| 53 |
typedef |
|
| 53 |
typedef GR Digraph; |
|
| 54 | 54 |
/// Arc type of the underlying digraph. |
| 55 | 55 |
typedef typename Digraph::Arc Arc; |
| 56 | 56 |
|
| 57 | 57 |
class ArcIt; |
| 58 | 58 |
|
| 59 | 59 |
/// \brief Default constructor |
| 60 | 60 |
Path() {}
|
| 61 | 61 |
|
| 62 | 62 |
/// \brief Template constructor |
| 63 | 63 |
template <typename CPath> |
| 64 | 64 |
Path(const CPath& cpath) {}
|
| 65 | 65 |
|
| 66 | 66 |
/// \brief Template assigment |
| 67 | 67 |
template <typename CPath> |
| 68 | 68 |
Path& operator=(const CPath& cpath) {
|
| 69 | 69 |
ignore_unused_variable_warning(cpath); |
| 70 | 70 |
return *this; |
| 71 | 71 |
} |
| 72 | 72 |
|
| 73 | 73 |
/// Length of the path ie. the number of arcs in the path. |
| 74 | 74 |
int length() const { return 0;}
|
| 75 | 75 |
|
| 76 | 76 |
/// Returns whether the path is empty. |
| 77 | 77 |
bool empty() const { return true;}
|
| 78 | 78 |
|
| 79 | 79 |
/// Resets the path to an empty path. |
| 80 | 80 |
void clear() {}
|
| 81 | 81 |
|
| 82 | 82 |
/// \brief LEMON style iterator for path arcs |
| 83 | 83 |
/// |
| 84 | 84 |
/// This class is used to iterate on the arcs of the paths. |
| 85 | 85 |
class ArcIt {
|
| 86 | 86 |
public: |
| 87 | 87 |
/// Default constructor |
| 88 | 88 |
ArcIt() {}
|
| 89 | 89 |
/// Invalid constructor |
| 90 | 90 |
ArcIt(Invalid) {}
|
| 91 | 91 |
/// Constructor for first arc |
| 92 | 92 |
ArcIt(const Path &) {}
|
| 93 | 93 |
|
| 94 | 94 |
/// Conversion to Arc |
| 95 | 95 |
operator Arc() const { return INVALID; }
|
| 96 | 96 |
|
| 97 | 97 |
/// Next arc |
| 98 | 98 |
ArcIt& operator++() {return *this;}
|
| 99 | 99 |
|
| 100 | 100 |
/// Comparison operator |
| 101 | 101 |
bool operator==(const ArcIt&) const {return true;}
|
| 102 | 102 |
/// Comparison operator |
| 103 | 103 |
bool operator!=(const ArcIt&) const {return true;}
|
| 104 | 104 |
/// Comparison operator |
| 105 | 105 |
bool operator<(const ArcIt&) const {return false;}
|
| 106 | 106 |
|
| 107 | 107 |
}; |
| 108 | 108 |
|
| 109 | 109 |
template <typename _Path> |
| 110 | 110 |
struct Constraints {
|
| 111 | 111 |
void constraints() {
|
| 112 | 112 |
Path<Digraph> pc; |
| 113 | 113 |
_Path p, pp(pc); |
| 114 | 114 |
int l = p.length(); |
| 115 | 115 |
int e = p.empty(); |
| 116 | 116 |
p.clear(); |
| 117 | 117 |
|
| 118 | 118 |
p = pc; |
| 119 | 119 |
|
| 120 | 120 |
typename _Path::ArcIt id, ii(INVALID), i(p); |
| 121 | 121 |
|
| 122 | 122 |
++i; |
| 123 | 123 |
typename Digraph::Arc ed = i; |
| 124 | 124 |
|
| 125 | 125 |
e = (i == ii); |
| 126 | 126 |
e = (i != ii); |
| 127 | 127 |
e = (i < ii); |
| 128 | 128 |
|
| 129 | 129 |
ignore_unused_variable_warning(l); |
| 130 | 130 |
ignore_unused_variable_warning(pp); |
| 131 | 131 |
ignore_unused_variable_warning(e); |
| 132 | 132 |
ignore_unused_variable_warning(id); |
| 133 | 133 |
ignore_unused_variable_warning(ii); |
| 134 | 134 |
ignore_unused_variable_warning(ed); |
| 135 | 135 |
} |
| 136 | 136 |
}; |
| 137 | 137 |
|
| 138 | 138 |
}; |
| 139 | 139 |
|
| 140 | 140 |
namespace _path_bits {
|
| 141 | 141 |
|
| 142 | 142 |
template <typename _Digraph, typename _Path, typename RevPathTag = void> |
| 143 | 143 |
struct PathDumperConstraints {
|
| 144 | 144 |
void constraints() {
|
| 145 | 145 |
int l = p.length(); |
| 146 | 146 |
int e = p.empty(); |
| 147 | 147 |
|
| 148 | 148 |
typename _Path::ArcIt id, i(p); |
| 149 | 149 |
|
| 150 | 150 |
++i; |
| 151 | 151 |
typename _Digraph::Arc ed = i; |
| 152 | 152 |
|
| 153 | 153 |
e = (i == INVALID); |
| 154 | 154 |
e = (i != INVALID); |
| 155 | 155 |
|
| 156 | 156 |
ignore_unused_variable_warning(l); |
| 157 | 157 |
ignore_unused_variable_warning(e); |
| 158 | 158 |
ignore_unused_variable_warning(id); |
| 159 | 159 |
ignore_unused_variable_warning(ed); |
| 160 | 160 |
} |
| 161 | 161 |
_Path& p; |
| 162 | 162 |
}; |
| 163 | 163 |
|
| 164 | 164 |
template <typename _Digraph, typename _Path> |
| 165 | 165 |
struct PathDumperConstraints< |
| 166 | 166 |
_Digraph, _Path, |
| 167 | 167 |
typename enable_if<typename _Path::RevPathTag, void>::type |
| 168 | 168 |
> {
|
| 169 | 169 |
void constraints() {
|
| 170 | 170 |
int l = p.length(); |
| 171 | 171 |
int e = p.empty(); |
| 172 | 172 |
|
| 173 | 173 |
typename _Path::RevArcIt id, i(p); |
| 174 | 174 |
|
| 175 | 175 |
++i; |
| 176 | 176 |
typename _Digraph::Arc ed = i; |
| 177 | 177 |
|
| 178 | 178 |
e = (i == INVALID); |
| 179 | 179 |
e = (i != INVALID); |
| 180 | 180 |
|
| 181 | 181 |
ignore_unused_variable_warning(l); |
| 182 | 182 |
ignore_unused_variable_warning(e); |
| 183 | 183 |
ignore_unused_variable_warning(id); |
| 184 | 184 |
ignore_unused_variable_warning(ed); |
| 185 | 185 |
} |
| 186 | 186 |
_Path& p; |
| 187 | 187 |
}; |
| 188 | 188 |
|
| 189 | 189 |
} |
| 190 | 190 |
|
| 191 | 191 |
|
| 192 | 192 |
/// \brief A skeleton structure for path dumpers. |
| 193 | 193 |
/// |
| 194 | 194 |
/// A skeleton structure for path dumpers. The path dumpers are |
| 195 | 195 |
/// the generalization of the paths. The path dumpers can |
| 196 | 196 |
/// enumerate the arcs of the path wheter in forward or in |
| 197 | 197 |
/// backward order. In most time these classes are not used |
| 198 | 198 |
/// directly rather it used to assign a dumped class to a real |
| 199 | 199 |
/// path type. |
| 200 | 200 |
/// |
| 201 | 201 |
/// The main purpose of this concept is that the shortest path |
| 202 | 202 |
/// algorithms can enumerate easily the arcs in reverse order. |
| 203 | 203 |
/// If we would like to give back a real path from these |
| 204 | 204 |
/// algorithms then we should create a temporarly path object. In |
| 205 | 205 |
/// LEMON such algorithms gives back a path dumper what can |
| 206 | 206 |
/// assigned to a real path and the dumpers can be implemented as |
| 207 | 207 |
/// an adaptor class to the predecessor map. |
| 208 |
|
|
| 209 |
/// \tparam _Digraph The digraph type in which the path is. |
|
| 208 |
/// |
|
| 209 |
/// \tparam GR The digraph type in which the path is. |
|
| 210 | 210 |
/// |
| 211 | 211 |
/// The paths can be constructed from any path type by a |
| 212 | 212 |
/// template constructor or a template assignment operator. |
| 213 |
/// |
|
| 214 |
template <typename _Digraph> |
|
| 213 |
template <typename GR> |
|
| 215 | 214 |
class PathDumper {
|
| 216 | 215 |
public: |
| 217 | 216 |
|
| 218 | 217 |
/// Type of the underlying digraph. |
| 219 |
typedef |
|
| 218 |
typedef GR Digraph; |
|
| 220 | 219 |
/// Arc type of the underlying digraph. |
| 221 | 220 |
typedef typename Digraph::Arc Arc; |
| 222 | 221 |
|
| 223 | 222 |
/// Length of the path ie. the number of arcs in the path. |
| 224 | 223 |
int length() const { return 0;}
|
| 225 | 224 |
|
| 226 | 225 |
/// Returns whether the path is empty. |
| 227 | 226 |
bool empty() const { return true;}
|
| 228 | 227 |
|
| 229 | 228 |
/// \brief Forward or reverse dumping |
| 230 | 229 |
/// |
| 231 | 230 |
/// If the RevPathTag is defined and true then reverse dumping |
| 232 | 231 |
/// is provided in the path dumper. In this case instead of the |
| 233 | 232 |
/// ArcIt the RevArcIt iterator should be implemented in the |
| 234 | 233 |
/// dumper. |
| 235 | 234 |
typedef False RevPathTag; |
| 236 | 235 |
|
| 237 | 236 |
/// \brief LEMON style iterator for path arcs |
| 238 | 237 |
/// |
| 239 | 238 |
/// This class is used to iterate on the arcs of the paths. |
| 240 | 239 |
class ArcIt {
|
| 241 | 240 |
public: |
| 242 | 241 |
/// Default constructor |
| 243 | 242 |
ArcIt() {}
|
| 244 | 243 |
/// Invalid constructor |
| 245 | 244 |
ArcIt(Invalid) {}
|
| 246 | 245 |
/// Constructor for first arc |
| 247 | 246 |
ArcIt(const PathDumper&) {}
|
| 248 | 247 |
|
| 249 | 248 |
/// Conversion to Arc |
| 250 | 249 |
operator Arc() const { return INVALID; }
|
| 251 | 250 |
|
| 252 | 251 |
/// Next arc |
| 253 | 252 |
ArcIt& operator++() {return *this;}
|
| 254 | 253 |
|
| 255 | 254 |
/// Comparison operator |
| 256 | 255 |
bool operator==(const ArcIt&) const {return true;}
|
| 257 | 256 |
/// Comparison operator |
| 258 | 257 |
bool operator!=(const ArcIt&) const {return true;}
|
| 259 | 258 |
/// Comparison operator |
| 260 | 259 |
bool operator<(const ArcIt&) const {return false;}
|
| 261 | 260 |
|
| 262 | 261 |
}; |
| 263 | 262 |
|
| 264 | 263 |
/// \brief LEMON style iterator for path arcs |
| 265 | 264 |
/// |
| 266 | 265 |
/// This class is used to iterate on the arcs of the paths in |
| 267 | 266 |
/// reverse direction. |
| 268 | 267 |
class RevArcIt {
|
| 269 | 268 |
public: |
| 270 | 269 |
/// Default constructor |
| 271 | 270 |
RevArcIt() {}
|
| 272 | 271 |
/// Invalid constructor |
| 273 | 272 |
RevArcIt(Invalid) {}
|
| 274 | 273 |
/// Constructor for first arc |
| 275 | 274 |
RevArcIt(const PathDumper &) {}
|
| 276 | 275 |
|
| 277 | 276 |
/// Conversion to Arc |
| 278 | 277 |
operator Arc() const { return INVALID; }
|
| 279 | 278 |
|
| 280 | 279 |
/// Next arc |
| 281 | 280 |
RevArcIt& operator++() {return *this;}
|
| 282 | 281 |
|
| 283 | 282 |
/// Comparison operator |
| 284 | 283 |
bool operator==(const RevArcIt&) const {return true;}
|
| 285 | 284 |
/// Comparison operator |
| 286 | 285 |
bool operator!=(const RevArcIt&) const {return true;}
|
| 287 | 286 |
/// Comparison operator |
| 288 | 287 |
bool operator<(const RevArcIt&) const {return false;}
|
| 289 | 288 |
|
| 290 | 289 |
}; |
| 291 | 290 |
|
| 292 | 291 |
template <typename _Path> |
| 293 | 292 |
struct Constraints {
|
| 294 | 293 |
void constraints() {
|
| 295 | 294 |
function_requires<_path_bits:: |
| 296 | 295 |
PathDumperConstraints<Digraph, _Path> >(); |
| 297 | 296 |
} |
| 298 | 297 |
}; |
| 299 | 298 |
|
| 300 | 299 |
}; |
| 301 | 300 |
|
| 302 | 301 |
|
| 303 | 302 |
///@} |
| 304 | 303 |
} |
| 305 | 304 |
|
| 306 | 305 |
} // namespace lemon |
| 307 | 306 |
|
| 308 |
#endif |
|
| 307 |
#endif |
| 1 |
/* The version string */ |
|
| 2 |
#undef LEMON_VERSION |
|
| 3 |
|
|
| 4 |
/* Define to 1 if you have long long */ |
|
| 5 |
#undef LEMON_HAVE_LONG_LONG |
|
| 6 |
|
|
| 1 | 7 |
/* Define to 1 if you have any LP solver. */ |
| 2 |
#undef |
|
| 8 |
#undef LEMON_HAVE_LP |
|
| 3 | 9 |
|
| 4 | 10 |
/* Define to 1 if you have any MIP solver. */ |
| 5 |
#undef |
|
| 11 |
#undef LEMON_HAVE_MIP |
|
| 6 | 12 |
|
| 7 | 13 |
/* Define to 1 if you have CPLEX. */ |
| 8 |
#undef |
|
| 14 |
#undef LEMON_HAVE_CPLEX |
|
| 9 | 15 |
|
| 10 | 16 |
/* Define to 1 if you have GLPK. */ |
| 11 |
#undef |
|
| 17 |
#undef LEMON_HAVE_GLPK |
|
| 12 | 18 |
|
| 13 | 19 |
/* Define to 1 if you have SOPLEX */ |
| 14 |
#undef |
|
| 20 |
#undef LEMON_HAVE_SOPLEX |
|
| 15 | 21 |
|
| 16 | 22 |
/* Define to 1 if you have CLP */ |
| 17 |
#undef |
|
| 23 |
#undef LEMON_HAVE_CLP |
|
| 24 |
|
|
| 25 |
/* Define to 1 if you have CBC */ |
|
| 26 |
#undef LEMON_HAVE_CBC |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_CONNECTIVITY_H |
| 20 | 20 |
#define LEMON_CONNECTIVITY_H |
| 21 | 21 |
|
| 22 | 22 |
#include <lemon/dfs.h> |
| 23 | 23 |
#include <lemon/bfs.h> |
| 24 | 24 |
#include <lemon/core.h> |
| 25 | 25 |
#include <lemon/maps.h> |
| 26 | 26 |
#include <lemon/adaptors.h> |
| 27 | 27 |
|
| 28 | 28 |
#include <lemon/concepts/digraph.h> |
| 29 | 29 |
#include <lemon/concepts/graph.h> |
| 30 | 30 |
#include <lemon/concept_check.h> |
| 31 | 31 |
|
| 32 | 32 |
#include <stack> |
| 33 | 33 |
#include <functional> |
| 34 | 34 |
|
| 35 |
/// \ingroup |
|
| 35 |
/// \ingroup graph_properties |
|
| 36 | 36 |
/// \file |
| 37 | 37 |
/// \brief Connectivity algorithms |
| 38 | 38 |
/// |
| 39 | 39 |
/// Connectivity algorithms |
| 40 | 40 |
|
| 41 | 41 |
namespace lemon {
|
| 42 | 42 |
|
| 43 |
/// \ingroup |
|
| 43 |
/// \ingroup graph_properties |
|
| 44 | 44 |
/// |
| 45 |
/// \brief Check whether |
|
| 45 |
/// \brief Check whether an undirected graph is connected. |
|
| 46 | 46 |
/// |
| 47 |
/// Check whether the given undirected graph is connected. |
|
| 48 |
/// \param graph The undirected graph. |
|
| 49 |
/// |
|
| 47 |
/// This function checks whether the given undirected graph is connected, |
|
| 48 |
/// i.e. there is a path between any two nodes in the graph. |
|
| 49 |
/// |
|
| 50 |
/// \return \c true if the graph is connected. |
|
| 50 | 51 |
/// \note By definition, the empty graph is connected. |
| 52 |
/// |
|
| 53 |
/// \see countConnectedComponents(), connectedComponents() |
|
| 54 |
/// \see stronglyConnected() |
|
| 51 | 55 |
template <typename Graph> |
| 52 | 56 |
bool connected(const Graph& graph) {
|
| 53 | 57 |
checkConcept<concepts::Graph, Graph>(); |
| 54 | 58 |
typedef typename Graph::NodeIt NodeIt; |
| 55 | 59 |
if (NodeIt(graph) == INVALID) return true; |
| 56 | 60 |
Dfs<Graph> dfs(graph); |
| 57 | 61 |
dfs.run(NodeIt(graph)); |
| 58 | 62 |
for (NodeIt it(graph); it != INVALID; ++it) {
|
| 59 | 63 |
if (!dfs.reached(it)) {
|
| 60 | 64 |
return false; |
| 61 | 65 |
} |
| 62 | 66 |
} |
| 63 | 67 |
return true; |
| 64 | 68 |
} |
| 65 | 69 |
|
| 66 |
/// \ingroup |
|
| 70 |
/// \ingroup graph_properties |
|
| 67 | 71 |
/// |
| 68 | 72 |
/// \brief Count the number of connected components of an undirected graph |
| 69 | 73 |
/// |
| 70 |
/// |
|
| 74 |
/// This function counts the number of connected components of the given |
|
| 75 |
/// undirected graph. |
|
| 71 | 76 |
/// |
| 72 |
/// \param graph The graph. It must be undirected. |
|
| 73 |
/// \return The number of components |
|
| 77 |
/// The connected components are the classes of an equivalence relation |
|
| 78 |
/// on the nodes of an undirected graph. Two nodes are in the same class |
|
| 79 |
/// if they are connected with a path. |
|
| 80 |
/// |
|
| 81 |
/// \return The number of connected components. |
|
| 74 | 82 |
/// \note By definition, the empty graph consists |
| 75 | 83 |
/// of zero connected components. |
| 84 |
/// |
|
| 85 |
/// \see connected(), connectedComponents() |
|
| 76 | 86 |
template <typename Graph> |
| 77 | 87 |
int countConnectedComponents(const Graph &graph) {
|
| 78 | 88 |
checkConcept<concepts::Graph, Graph>(); |
| 79 | 89 |
typedef typename Graph::Node Node; |
| 80 | 90 |
typedef typename Graph::Arc Arc; |
| 81 | 91 |
|
| 82 | 92 |
typedef NullMap<Node, Arc> PredMap; |
| 83 | 93 |
typedef NullMap<Node, int> DistMap; |
| 84 | 94 |
|
| 85 | 95 |
int compNum = 0; |
| 86 | 96 |
typename Bfs<Graph>:: |
| 87 | 97 |
template SetPredMap<PredMap>:: |
| 88 | 98 |
template SetDistMap<DistMap>:: |
| 89 | 99 |
Create bfs(graph); |
| 90 | 100 |
|
| 91 | 101 |
PredMap predMap; |
| 92 | 102 |
bfs.predMap(predMap); |
| 93 | 103 |
|
| 94 | 104 |
DistMap distMap; |
| 95 | 105 |
bfs.distMap(distMap); |
| 96 | 106 |
|
| 97 | 107 |
bfs.init(); |
| 98 | 108 |
for(typename Graph::NodeIt n(graph); n != INVALID; ++n) {
|
| 99 | 109 |
if (!bfs.reached(n)) {
|
| 100 | 110 |
bfs.addSource(n); |
| 101 | 111 |
bfs.start(); |
| 102 | 112 |
++compNum; |
| 103 | 113 |
} |
| 104 | 114 |
} |
| 105 | 115 |
return compNum; |
| 106 | 116 |
} |
| 107 | 117 |
|
| 108 |
/// \ingroup |
|
| 118 |
/// \ingroup graph_properties |
|
| 109 | 119 |
/// |
| 110 | 120 |
/// \brief Find the connected components of an undirected graph |
| 111 | 121 |
/// |
| 112 |
/// |
|
| 122 |
/// This function finds the connected components of the given undirected |
|
| 123 |
/// graph. |
|
| 113 | 124 |
/// |
| 114 |
/// |
|
| 125 |
/// The connected components are the classes of an equivalence relation |
|
| 126 |
/// on the nodes of an undirected graph. Two nodes are in the same class |
|
| 127 |
/// if they are connected with a path. |
|
| 128 |
/// |
|
| 129 |
/// \image html connected_components.png |
|
| 130 |
/// \image latex connected_components.eps "Connected components" width=\textwidth |
|
| 131 |
/// |
|
| 132 |
/// \param graph The undirected graph. |
|
| 115 | 133 |
/// \retval compMap A writable node map. The values will be set from 0 to |
| 116 |
/// the number of the connected components minus one. Each values of the map |
|
| 117 |
/// will be set exactly once, the values of a certain component will be |
|
| 134 |
/// the number of the connected components minus one. Each value of the map |
|
| 135 |
/// will be set exactly once, and the values of a certain component will be |
|
| 118 | 136 |
/// set continuously. |
| 119 |
/// \return The number of components |
|
| 137 |
/// \return The number of connected components. |
|
| 138 |
/// \note By definition, the empty graph consists |
|
| 139 |
/// of zero connected components. |
|
| 120 | 140 |
/// |
| 141 |
/// \see connected(), countConnectedComponents() |
|
| 121 | 142 |
template <class Graph, class NodeMap> |
| 122 | 143 |
int connectedComponents(const Graph &graph, NodeMap &compMap) {
|
| 123 | 144 |
checkConcept<concepts::Graph, Graph>(); |
| 124 | 145 |
typedef typename Graph::Node Node; |
| 125 | 146 |
typedef typename Graph::Arc Arc; |
| 126 | 147 |
checkConcept<concepts::WriteMap<Node, int>, NodeMap>(); |
| 127 | 148 |
|
| 128 | 149 |
typedef NullMap<Node, Arc> PredMap; |
| 129 | 150 |
typedef NullMap<Node, int> DistMap; |
| 130 | 151 |
|
| 131 | 152 |
int compNum = 0; |
| 132 | 153 |
typename Bfs<Graph>:: |
| 133 | 154 |
template SetPredMap<PredMap>:: |
| 134 | 155 |
template SetDistMap<DistMap>:: |
| 135 | 156 |
Create bfs(graph); |
| 136 | 157 |
|
| 137 | 158 |
PredMap predMap; |
| 138 | 159 |
bfs.predMap(predMap); |
| 139 | 160 |
|
| 140 | 161 |
DistMap distMap; |
| 141 | 162 |
bfs.distMap(distMap); |
| 142 | 163 |
|
| 143 | 164 |
bfs.init(); |
| 144 | 165 |
for(typename Graph::NodeIt n(graph); n != INVALID; ++n) {
|
| 145 | 166 |
if(!bfs.reached(n)) {
|
| 146 | 167 |
bfs.addSource(n); |
| 147 | 168 |
while (!bfs.emptyQueue()) {
|
| 148 | 169 |
compMap.set(bfs.nextNode(), compNum); |
| 149 | 170 |
bfs.processNextNode(); |
| 150 | 171 |
} |
| 151 | 172 |
++compNum; |
| 152 | 173 |
} |
| 153 | 174 |
} |
| 154 | 175 |
return compNum; |
| 155 | 176 |
} |
| 156 | 177 |
|
| 157 | 178 |
namespace _connectivity_bits {
|
| 158 | 179 |
|
| 159 | 180 |
template <typename Digraph, typename Iterator > |
| 160 | 181 |
struct LeaveOrderVisitor : public DfsVisitor<Digraph> {
|
| 161 | 182 |
public: |
| 162 | 183 |
typedef typename Digraph::Node Node; |
| 163 | 184 |
LeaveOrderVisitor(Iterator it) : _it(it) {}
|
| 164 | 185 |
|
| 165 | 186 |
void leave(const Node& node) {
|
| 166 | 187 |
*(_it++) = node; |
| 167 | 188 |
} |
| 168 | 189 |
|
| 169 | 190 |
private: |
| 170 | 191 |
Iterator _it; |
| 171 | 192 |
}; |
| 172 | 193 |
|
| 173 | 194 |
template <typename Digraph, typename Map> |
| 174 | 195 |
struct FillMapVisitor : public DfsVisitor<Digraph> {
|
| 175 | 196 |
public: |
| 176 | 197 |
typedef typename Digraph::Node Node; |
| 177 | 198 |
typedef typename Map::Value Value; |
| 178 | 199 |
|
| 179 | 200 |
FillMapVisitor(Map& map, Value& value) |
| 180 | 201 |
: _map(map), _value(value) {}
|
| 181 | 202 |
|
| 182 | 203 |
void reach(const Node& node) {
|
| 183 | 204 |
_map.set(node, _value); |
| 184 | 205 |
} |
| 185 | 206 |
private: |
| 186 | 207 |
Map& _map; |
| 187 | 208 |
Value& _value; |
| 188 | 209 |
}; |
| 189 | 210 |
|
| 190 | 211 |
template <typename Digraph, typename ArcMap> |
| 191 | 212 |
struct StronglyConnectedCutArcsVisitor : public DfsVisitor<Digraph> {
|
| 192 | 213 |
public: |
| 193 | 214 |
typedef typename Digraph::Node Node; |
| 194 | 215 |
typedef typename Digraph::Arc Arc; |
| 195 | 216 |
|
| 196 | 217 |
StronglyConnectedCutArcsVisitor(const Digraph& digraph, |
| 197 | 218 |
ArcMap& cutMap, |
| 198 | 219 |
int& cutNum) |
| 199 | 220 |
: _digraph(digraph), _cutMap(cutMap), _cutNum(cutNum), |
| 200 | 221 |
_compMap(digraph, -1), _num(-1) {
|
| 201 | 222 |
} |
| 202 | 223 |
|
| 203 | 224 |
void start(const Node&) {
|
| 204 | 225 |
++_num; |
| 205 | 226 |
} |
| 206 | 227 |
|
| 207 | 228 |
void reach(const Node& node) {
|
| 208 | 229 |
_compMap.set(node, _num); |
| 209 | 230 |
} |
| 210 | 231 |
|
| 211 | 232 |
void examine(const Arc& arc) {
|
| 212 | 233 |
if (_compMap[_digraph.source(arc)] != |
| 213 | 234 |
_compMap[_digraph.target(arc)]) {
|
| 214 | 235 |
_cutMap.set(arc, true); |
| 215 | 236 |
++_cutNum; |
| 216 | 237 |
} |
| 217 | 238 |
} |
| 218 | 239 |
private: |
| 219 | 240 |
const Digraph& _digraph; |
| 220 | 241 |
ArcMap& _cutMap; |
| 221 | 242 |
int& _cutNum; |
| 222 | 243 |
|
| 223 | 244 |
typename Digraph::template NodeMap<int> _compMap; |
| 224 | 245 |
int _num; |
| 225 | 246 |
}; |
| 226 | 247 |
|
| 227 | 248 |
} |
| 228 | 249 |
|
| 229 | 250 |
|
| 230 |
/// \ingroup |
|
| 251 |
/// \ingroup graph_properties |
|
| 231 | 252 |
/// |
| 232 |
/// \brief Check whether |
|
| 253 |
/// \brief Check whether a directed graph is strongly connected. |
|
| 233 | 254 |
/// |
| 234 |
/// Check whether the given directed graph is strongly connected. The |
|
| 235 |
/// graph is strongly connected when any two nodes of the graph are |
|
| 255 |
/// This function checks whether the given directed graph is strongly |
|
| 256 |
/// connected, i.e. any two nodes of the digraph are |
|
| 236 | 257 |
/// connected with directed paths in both direction. |
| 237 |
/// \return %False when the graph is not strongly connected. |
|
| 238 |
/// \see connected |
|
| 239 | 258 |
/// |
| 240 |
/// \ |
|
| 259 |
/// \return \c true if the digraph is strongly connected. |
|
| 260 |
/// \note By definition, the empty digraph is strongly connected. |
|
| 261 |
/// |
|
| 262 |
/// \see countStronglyConnectedComponents(), stronglyConnectedComponents() |
|
| 263 |
/// \see connected() |
|
| 241 | 264 |
template <typename Digraph> |
| 242 | 265 |
bool stronglyConnected(const Digraph& digraph) {
|
| 243 | 266 |
checkConcept<concepts::Digraph, Digraph>(); |
| 244 | 267 |
|
| 245 | 268 |
typedef typename Digraph::Node Node; |
| 246 | 269 |
typedef typename Digraph::NodeIt NodeIt; |
| 247 | 270 |
|
| 248 | 271 |
typename Digraph::Node source = NodeIt(digraph); |
| 249 | 272 |
if (source == INVALID) return true; |
| 250 | 273 |
|
| 251 | 274 |
using namespace _connectivity_bits; |
| 252 | 275 |
|
| 253 | 276 |
typedef DfsVisitor<Digraph> Visitor; |
| 254 | 277 |
Visitor visitor; |
| 255 | 278 |
|
| 256 | 279 |
DfsVisit<Digraph, Visitor> dfs(digraph, visitor); |
| 257 | 280 |
dfs.init(); |
| 258 | 281 |
dfs.addSource(source); |
| 259 | 282 |
dfs.start(); |
| 260 | 283 |
|
| 261 | 284 |
for (NodeIt it(digraph); it != INVALID; ++it) {
|
| 262 | 285 |
if (!dfs.reached(it)) {
|
| 263 | 286 |
return false; |
| 264 | 287 |
} |
| 265 | 288 |
} |
| 266 | 289 |
|
| 267 | 290 |
typedef ReverseDigraph<const Digraph> RDigraph; |
| 268 | 291 |
typedef typename RDigraph::NodeIt RNodeIt; |
| 269 | 292 |
RDigraph rdigraph(digraph); |
| 270 | 293 |
|
| 271 |
typedef DfsVisitor< |
|
| 294 |
typedef DfsVisitor<RDigraph> RVisitor; |
|
| 272 | 295 |
RVisitor rvisitor; |
| 273 | 296 |
|
| 274 | 297 |
DfsVisit<RDigraph, RVisitor> rdfs(rdigraph, rvisitor); |
| 275 | 298 |
rdfs.init(); |
| 276 | 299 |
rdfs.addSource(source); |
| 277 | 300 |
rdfs.start(); |
| 278 | 301 |
|
| 279 | 302 |
for (RNodeIt it(rdigraph); it != INVALID; ++it) {
|
| 280 | 303 |
if (!rdfs.reached(it)) {
|
| 281 | 304 |
return false; |
| 282 | 305 |
} |
| 283 | 306 |
} |
| 284 | 307 |
|
| 285 | 308 |
return true; |
| 286 | 309 |
} |
| 287 | 310 |
|
| 288 |
/// \ingroup |
|
| 311 |
/// \ingroup graph_properties |
|
| 289 | 312 |
/// |
| 290 |
/// \brief Count the strongly connected components of a |
|
| 313 |
/// \brief Count the number of strongly connected components of a |
|
| 314 |
/// directed graph |
|
| 291 | 315 |
/// |
| 292 |
/// |
|
| 316 |
/// This function counts the number of strongly connected components of |
|
| 317 |
/// the given directed graph. |
|
| 318 |
/// |
|
| 293 | 319 |
/// The strongly connected components are the classes of an |
| 294 |
/// equivalence relation on the nodes of |
|
| 320 |
/// equivalence relation on the nodes of a digraph. Two nodes are in |
|
| 295 | 321 |
/// the same class if they are connected with directed paths in both |
| 296 | 322 |
/// direction. |
| 297 | 323 |
/// |
| 298 |
/// \param digraph The graph. |
|
| 299 |
/// \return The number of components |
|
| 300 |
/// \ |
|
| 324 |
/// \return The number of strongly connected components. |
|
| 325 |
/// \note By definition, the empty digraph has zero |
|
| 301 | 326 |
/// strongly connected components. |
| 327 |
/// |
|
| 328 |
/// \see stronglyConnected(), stronglyConnectedComponents() |
|
| 302 | 329 |
template <typename Digraph> |
| 303 | 330 |
int countStronglyConnectedComponents(const Digraph& digraph) {
|
| 304 | 331 |
checkConcept<concepts::Digraph, Digraph>(); |
| 305 | 332 |
|
| 306 | 333 |
using namespace _connectivity_bits; |
| 307 | 334 |
|
| 308 | 335 |
typedef typename Digraph::Node Node; |
| 309 | 336 |
typedef typename Digraph::Arc Arc; |
| 310 | 337 |
typedef typename Digraph::NodeIt NodeIt; |
| 311 | 338 |
typedef typename Digraph::ArcIt ArcIt; |
| 312 | 339 |
|
| 313 | 340 |
typedef std::vector<Node> Container; |
| 314 | 341 |
typedef typename Container::iterator Iterator; |
| 315 | 342 |
|
| 316 | 343 |
Container nodes(countNodes(digraph)); |
| 317 | 344 |
typedef LeaveOrderVisitor<Digraph, Iterator> Visitor; |
| 318 | 345 |
Visitor visitor(nodes.begin()); |
| 319 | 346 |
|
| 320 | 347 |
DfsVisit<Digraph, Visitor> dfs(digraph, visitor); |
| 321 | 348 |
dfs.init(); |
| 322 | 349 |
for (NodeIt it(digraph); it != INVALID; ++it) {
|
| 323 | 350 |
if (!dfs.reached(it)) {
|
| 324 | 351 |
dfs.addSource(it); |
| 325 | 352 |
dfs.start(); |
| 326 | 353 |
} |
| 327 | 354 |
} |
| 328 | 355 |
|
| 329 | 356 |
typedef typename Container::reverse_iterator RIterator; |
| 330 | 357 |
typedef ReverseDigraph<const Digraph> RDigraph; |
| 331 | 358 |
|
| 332 | 359 |
RDigraph rdigraph(digraph); |
| 333 | 360 |
|
| 334 | 361 |
typedef DfsVisitor<Digraph> RVisitor; |
| 335 | 362 |
RVisitor rvisitor; |
| 336 | 363 |
|
| 337 | 364 |
DfsVisit<RDigraph, RVisitor> rdfs(rdigraph, rvisitor); |
| 338 | 365 |
|
| 339 | 366 |
int compNum = 0; |
| 340 | 367 |
|
| 341 | 368 |
rdfs.init(); |
| 342 | 369 |
for (RIterator it = nodes.rbegin(); it != nodes.rend(); ++it) {
|
| 343 | 370 |
if (!rdfs.reached(*it)) {
|
| 344 | 371 |
rdfs.addSource(*it); |
| 345 | 372 |
rdfs.start(); |
| 346 | 373 |
++compNum; |
| 347 | 374 |
} |
| 348 | 375 |
} |
| 349 | 376 |
return compNum; |
| 350 | 377 |
} |
| 351 | 378 |
|
| 352 |
/// \ingroup |
|
| 379 |
/// \ingroup graph_properties |
|
| 353 | 380 |
/// |
| 354 | 381 |
/// \brief Find the strongly connected components of a directed graph |
| 355 | 382 |
/// |
| 356 |
/// Find the strongly connected components of a directed graph. The |
|
| 357 |
/// strongly connected components are the classes of an equivalence |
|
| 358 |
/// relation on the nodes of the graph. Two nodes are in |
|
| 359 |
/// relationship when there are directed paths between them in both |
|
| 360 |
/// direction. In addition, the numbering of components will satisfy |
|
| 361 |
/// that there is no arc going from a higher numbered component to |
|
| 362 |
/// |
|
| 383 |
/// This function finds the strongly connected components of the given |
|
| 384 |
/// directed graph. In addition, the numbering of the components will |
|
| 385 |
/// satisfy that there is no arc going from a higher numbered component |
|
| 386 |
/// to a lower one (i.e. it provides a topological order of the components). |
|
| 387 |
/// |
|
| 388 |
/// The strongly connected components are the classes of an |
|
| 389 |
/// equivalence relation on the nodes of a digraph. Two nodes are in |
|
| 390 |
/// the same class if they are connected with directed paths in both |
|
| 391 |
/// direction. |
|
| 392 |
/// |
|
| 393 |
/// \image html strongly_connected_components.png |
|
| 394 |
/// \image latex strongly_connected_components.eps "Strongly connected components" width=\textwidth |
|
| 363 | 395 |
/// |
| 364 | 396 |
/// \param digraph The digraph. |
| 365 | 397 |
/// \retval compMap A writable node map. The values will be set from 0 to |
| 366 | 398 |
/// the number of the strongly connected components minus one. Each value |
| 367 |
/// of the map will be set exactly once, the values of a certain component |
|
| 368 |
/// will be set continuously. |
|
| 369 |
/// |
|
| 399 |
/// of the map will be set exactly once, and the values of a certain |
|
| 400 |
/// component will be set continuously. |
|
| 401 |
/// \return The number of strongly connected components. |
|
| 402 |
/// \note By definition, the empty digraph has zero |
|
| 403 |
/// strongly connected components. |
|
| 370 | 404 |
/// |
| 405 |
/// \see stronglyConnected(), countStronglyConnectedComponents() |
|
| 371 | 406 |
template <typename Digraph, typename NodeMap> |
| 372 | 407 |
int stronglyConnectedComponents(const Digraph& digraph, NodeMap& compMap) {
|
| 373 | 408 |
checkConcept<concepts::Digraph, Digraph>(); |
| 374 | 409 |
typedef typename Digraph::Node Node; |
| 375 | 410 |
typedef typename Digraph::NodeIt NodeIt; |
| 376 | 411 |
checkConcept<concepts::WriteMap<Node, int>, NodeMap>(); |
| 377 | 412 |
|
| 378 | 413 |
using namespace _connectivity_bits; |
| 379 | 414 |
|
| 380 | 415 |
typedef std::vector<Node> Container; |
| 381 | 416 |
typedef typename Container::iterator Iterator; |
| 382 | 417 |
|
| 383 | 418 |
Container nodes(countNodes(digraph)); |
| 384 | 419 |
typedef LeaveOrderVisitor<Digraph, Iterator> Visitor; |
| 385 | 420 |
Visitor visitor(nodes.begin()); |
| 386 | 421 |
|
| 387 | 422 |
DfsVisit<Digraph, Visitor> dfs(digraph, visitor); |
| 388 | 423 |
dfs.init(); |
| 389 | 424 |
for (NodeIt it(digraph); it != INVALID; ++it) {
|
| 390 | 425 |
if (!dfs.reached(it)) {
|
| 391 | 426 |
dfs.addSource(it); |
| 392 | 427 |
dfs.start(); |
| 393 | 428 |
} |
| 394 | 429 |
} |
| 395 | 430 |
|
| 396 | 431 |
typedef typename Container::reverse_iterator RIterator; |
| 397 | 432 |
typedef ReverseDigraph<const Digraph> RDigraph; |
| 398 | 433 |
|
| 399 | 434 |
RDigraph rdigraph(digraph); |
| 400 | 435 |
|
| 401 | 436 |
int compNum = 0; |
| 402 | 437 |
|
| 403 | 438 |
typedef FillMapVisitor<RDigraph, NodeMap> RVisitor; |
| 404 | 439 |
RVisitor rvisitor(compMap, compNum); |
| 405 | 440 |
|
| 406 | 441 |
DfsVisit<RDigraph, RVisitor> rdfs(rdigraph, rvisitor); |
| 407 | 442 |
|
| 408 | 443 |
rdfs.init(); |
| 409 | 444 |
for (RIterator it = nodes.rbegin(); it != nodes.rend(); ++it) {
|
| 410 | 445 |
if (!rdfs.reached(*it)) {
|
| 411 | 446 |
rdfs.addSource(*it); |
| 412 | 447 |
rdfs.start(); |
| 413 | 448 |
++compNum; |
| 414 | 449 |
} |
| 415 | 450 |
} |
| 416 | 451 |
return compNum; |
| 417 | 452 |
} |
| 418 | 453 |
|
| 419 |
/// \ingroup |
|
| 454 |
/// \ingroup graph_properties |
|
| 420 | 455 |
/// |
| 421 | 456 |
/// \brief Find the cut arcs of the strongly connected components. |
| 422 | 457 |
/// |
| 423 |
/// Find the cut arcs of the strongly connected components. |
|
| 424 |
/// The strongly connected components are the classes of an equivalence |
|
| 425 |
/// relation on the nodes of the graph. Two nodes are in relationship |
|
| 426 |
/// when there are directed paths between them in both direction. |
|
| 458 |
/// This function finds the cut arcs of the strongly connected components |
|
| 459 |
/// of the given digraph. |
|
| 460 |
/// |
|
| 461 |
/// The strongly connected components are the classes of an |
|
| 462 |
/// equivalence relation on the nodes of a digraph. Two nodes are in |
|
| 463 |
/// the same class if they are connected with directed paths in both |
|
| 464 |
/// direction. |
|
| 427 | 465 |
/// The strongly connected components are separated by the cut arcs. |
| 428 | 466 |
/// |
| 429 |
/// \param graph The graph. |
|
| 430 |
/// \retval cutMap A writable node map. The values will be set true when the |
|
| 431 |
/// |
|
| 467 |
/// \param digraph The digraph. |
|
| 468 |
/// \retval cutMap A writable arc map. The values will be set to \c true |
|
| 469 |
/// for the cut arcs (exactly once for each cut arc), and will not be |
|
| 470 |
/// changed for other arcs. |
|
| 471 |
/// \return The number of cut arcs. |
|
| 432 | 472 |
/// |
| 433 |
/// \ |
|
| 473 |
/// \see stronglyConnected(), stronglyConnectedComponents() |
|
| 434 | 474 |
template <typename Digraph, typename ArcMap> |
| 435 |
int stronglyConnectedCutArcs(const Digraph& |
|
| 475 |
int stronglyConnectedCutArcs(const Digraph& digraph, ArcMap& cutMap) {
|
|
| 436 | 476 |
checkConcept<concepts::Digraph, Digraph>(); |
| 437 | 477 |
typedef typename Digraph::Node Node; |
| 438 | 478 |
typedef typename Digraph::Arc Arc; |
| 439 | 479 |
typedef typename Digraph::NodeIt NodeIt; |
| 440 | 480 |
checkConcept<concepts::WriteMap<Arc, bool>, ArcMap>(); |
| 441 | 481 |
|
| 442 | 482 |
using namespace _connectivity_bits; |
| 443 | 483 |
|
| 444 | 484 |
typedef std::vector<Node> Container; |
| 445 | 485 |
typedef typename Container::iterator Iterator; |
| 446 | 486 |
|
| 447 |
Container nodes(countNodes( |
|
| 487 |
Container nodes(countNodes(digraph)); |
|
| 448 | 488 |
typedef LeaveOrderVisitor<Digraph, Iterator> Visitor; |
| 449 | 489 |
Visitor visitor(nodes.begin()); |
| 450 | 490 |
|
| 451 |
DfsVisit<Digraph, Visitor> dfs( |
|
| 491 |
DfsVisit<Digraph, Visitor> dfs(digraph, visitor); |
|
| 452 | 492 |
dfs.init(); |
| 453 |
for (NodeIt it( |
|
| 493 |
for (NodeIt it(digraph); it != INVALID; ++it) {
|
|
| 454 | 494 |
if (!dfs.reached(it)) {
|
| 455 | 495 |
dfs.addSource(it); |
| 456 | 496 |
dfs.start(); |
| 457 | 497 |
} |
| 458 | 498 |
} |
| 459 | 499 |
|
| 460 | 500 |
typedef typename Container::reverse_iterator RIterator; |
| 461 | 501 |
typedef ReverseDigraph<const Digraph> RDigraph; |
| 462 | 502 |
|
| 463 |
RDigraph |
|
| 503 |
RDigraph rdigraph(digraph); |
|
| 464 | 504 |
|
| 465 | 505 |
int cutNum = 0; |
| 466 | 506 |
|
| 467 | 507 |
typedef StronglyConnectedCutArcsVisitor<RDigraph, ArcMap> RVisitor; |
| 468 |
RVisitor rvisitor( |
|
| 508 |
RVisitor rvisitor(rdigraph, cutMap, cutNum); |
|
| 469 | 509 |
|
| 470 |
DfsVisit<RDigraph, RVisitor> rdfs( |
|
| 510 |
DfsVisit<RDigraph, RVisitor> rdfs(rdigraph, rvisitor); |
|
| 471 | 511 |
|
| 472 | 512 |
rdfs.init(); |
| 473 | 513 |
for (RIterator it = nodes.rbegin(); it != nodes.rend(); ++it) {
|
| 474 | 514 |
if (!rdfs.reached(*it)) {
|
| 475 | 515 |
rdfs.addSource(*it); |
| 476 | 516 |
rdfs.start(); |
| 477 | 517 |
} |
| 478 | 518 |
} |
| 479 | 519 |
return cutNum; |
| 480 | 520 |
} |
| 481 | 521 |
|
| 482 | 522 |
namespace _connectivity_bits {
|
| 483 | 523 |
|
| 484 | 524 |
template <typename Digraph> |
| 485 | 525 |
class CountBiNodeConnectedComponentsVisitor : public DfsVisitor<Digraph> {
|
| 486 | 526 |
public: |
| 487 | 527 |
typedef typename Digraph::Node Node; |
| 488 | 528 |
typedef typename Digraph::Arc Arc; |
| 489 | 529 |
typedef typename Digraph::Edge Edge; |
| 490 | 530 |
|
| 491 | 531 |
CountBiNodeConnectedComponentsVisitor(const Digraph& graph, int &compNum) |
| 492 | 532 |
: _graph(graph), _compNum(compNum), |
| 493 | 533 |
_numMap(graph), _retMap(graph), _predMap(graph), _num(0) {}
|
| 494 | 534 |
|
| 495 | 535 |
void start(const Node& node) {
|
| 496 | 536 |
_predMap.set(node, INVALID); |
| 497 | 537 |
} |
| 498 | 538 |
|
| 499 | 539 |
void reach(const Node& node) {
|
| 500 | 540 |
_numMap.set(node, _num); |
| 501 | 541 |
_retMap.set(node, _num); |
| 502 | 542 |
++_num; |
| 503 | 543 |
} |
| 504 | 544 |
|
| 505 | 545 |
void discover(const Arc& edge) {
|
| 506 | 546 |
_predMap.set(_graph.target(edge), _graph.source(edge)); |
| 507 | 547 |
} |
| 508 | 548 |
|
| 509 | 549 |
void examine(const Arc& edge) {
|
| 510 | 550 |
if (_graph.source(edge) == _graph.target(edge) && |
| 511 | 551 |
_graph.direction(edge)) {
|
| 512 | 552 |
++_compNum; |
| 513 | 553 |
return; |
| 514 | 554 |
} |
| 515 | 555 |
if (_predMap[_graph.source(edge)] == _graph.target(edge)) {
|
| 516 | 556 |
return; |
| 517 | 557 |
} |
| 518 | 558 |
if (_retMap[_graph.source(edge)] > _numMap[_graph.target(edge)]) {
|
| 519 | 559 |
_retMap.set(_graph.source(edge), _numMap[_graph.target(edge)]); |
| 520 | 560 |
} |
| 521 | 561 |
} |
| 522 | 562 |
|
| 523 | 563 |
void backtrack(const Arc& edge) {
|
| 524 | 564 |
if (_retMap[_graph.source(edge)] > _retMap[_graph.target(edge)]) {
|
| 525 | 565 |
_retMap.set(_graph.source(edge), _retMap[_graph.target(edge)]); |
| 526 | 566 |
} |
| 527 | 567 |
if (_numMap[_graph.source(edge)] <= _retMap[_graph.target(edge)]) {
|
| 528 | 568 |
++_compNum; |
| 529 | 569 |
} |
| 530 | 570 |
} |
| 531 | 571 |
|
| 532 | 572 |
private: |
| 533 | 573 |
const Digraph& _graph; |
| 534 | 574 |
int& _compNum; |
| 535 | 575 |
|
| 536 | 576 |
typename Digraph::template NodeMap<int> _numMap; |
| 537 | 577 |
typename Digraph::template NodeMap<int> _retMap; |
| 538 | 578 |
typename Digraph::template NodeMap<Node> _predMap; |
| 539 | 579 |
int _num; |
| 540 | 580 |
}; |
| 541 | 581 |
|
| 542 | 582 |
template <typename Digraph, typename ArcMap> |
| 543 | 583 |
class BiNodeConnectedComponentsVisitor : public DfsVisitor<Digraph> {
|
| 544 | 584 |
public: |
| 545 | 585 |
typedef typename Digraph::Node Node; |
| 546 | 586 |
typedef typename Digraph::Arc Arc; |
| 547 | 587 |
typedef typename Digraph::Edge Edge; |
| 548 | 588 |
|
| 549 | 589 |
BiNodeConnectedComponentsVisitor(const Digraph& graph, |
| 550 | 590 |
ArcMap& compMap, int &compNum) |
| 551 | 591 |
: _graph(graph), _compMap(compMap), _compNum(compNum), |
| 552 | 592 |
_numMap(graph), _retMap(graph), _predMap(graph), _num(0) {}
|
| 553 | 593 |
|
| 554 | 594 |
void start(const Node& node) {
|
| 555 | 595 |
_predMap.set(node, INVALID); |
| 556 | 596 |
} |
| 557 | 597 |
|
| 558 | 598 |
void reach(const Node& node) {
|
| 559 | 599 |
_numMap.set(node, _num); |
| 560 | 600 |
_retMap.set(node, _num); |
| 561 | 601 |
++_num; |
| 562 | 602 |
} |
| 563 | 603 |
|
| 564 | 604 |
void discover(const Arc& edge) {
|
| 565 | 605 |
Node target = _graph.target(edge); |
| 566 | 606 |
_predMap.set(target, edge); |
| 567 | 607 |
_edgeStack.push(edge); |
| 568 | 608 |
} |
| 569 | 609 |
|
| 570 | 610 |
void examine(const Arc& edge) {
|
| 571 | 611 |
Node source = _graph.source(edge); |
| 572 | 612 |
Node target = _graph.target(edge); |
| 573 | 613 |
if (source == target && _graph.direction(edge)) {
|
| 574 | 614 |
_compMap.set(edge, _compNum); |
| 575 | 615 |
++_compNum; |
| 576 | 616 |
return; |
| 577 | 617 |
} |
| 578 | 618 |
if (_numMap[target] < _numMap[source]) {
|
| 579 | 619 |
if (_predMap[source] != _graph.oppositeArc(edge)) {
|
| 580 | 620 |
_edgeStack.push(edge); |
| 581 | 621 |
} |
| 582 | 622 |
} |
| 583 | 623 |
if (_predMap[source] != INVALID && |
| 584 | 624 |
target == _graph.source(_predMap[source])) {
|
| 585 | 625 |
return; |
| 586 | 626 |
} |
| 587 | 627 |
if (_retMap[source] > _numMap[target]) {
|
| 588 | 628 |
_retMap.set(source, _numMap[target]); |
| 589 | 629 |
} |
| 590 | 630 |
} |
| 591 | 631 |
|
| 592 | 632 |
void backtrack(const Arc& edge) {
|
| 593 | 633 |
Node source = _graph.source(edge); |
| 594 | 634 |
Node target = _graph.target(edge); |
| 595 | 635 |
if (_retMap[source] > _retMap[target]) {
|
| 596 | 636 |
_retMap.set(source, _retMap[target]); |
| 597 | 637 |
} |
| 598 | 638 |
if (_numMap[source] <= _retMap[target]) {
|
| 599 | 639 |
while (_edgeStack.top() != edge) {
|
| 600 | 640 |
_compMap.set(_edgeStack.top(), _compNum); |
| 601 | 641 |
_edgeStack.pop(); |
| 602 | 642 |
} |
| 603 | 643 |
_compMap.set(edge, _compNum); |
| 604 | 644 |
_edgeStack.pop(); |
| 605 | 645 |
++_compNum; |
| 606 | 646 |
} |
| 607 | 647 |
} |
| 608 | 648 |
|
| 609 | 649 |
private: |
| 610 | 650 |
const Digraph& _graph; |
| 611 | 651 |
ArcMap& _compMap; |
| 612 | 652 |
int& _compNum; |
| 613 | 653 |
|
| 614 | 654 |
typename Digraph::template NodeMap<int> _numMap; |
| 615 | 655 |
typename Digraph::template NodeMap<int> _retMap; |
| 616 | 656 |
typename Digraph::template NodeMap<Arc> _predMap; |
| 617 | 657 |
std::stack<Edge> _edgeStack; |
| 618 | 658 |
int _num; |
| 619 | 659 |
}; |
| 620 | 660 |
|
| 621 | 661 |
|
| 622 | 662 |
template <typename Digraph, typename NodeMap> |
| 623 | 663 |
class BiNodeConnectedCutNodesVisitor : public DfsVisitor<Digraph> {
|
| 624 | 664 |
public: |
| 625 | 665 |
typedef typename Digraph::Node Node; |
| 626 | 666 |
typedef typename Digraph::Arc Arc; |
| 627 | 667 |
typedef typename Digraph::Edge Edge; |
| 628 | 668 |
|
| 629 | 669 |
BiNodeConnectedCutNodesVisitor(const Digraph& graph, NodeMap& cutMap, |
| 630 | 670 |
int& cutNum) |
| 631 | 671 |
: _graph(graph), _cutMap(cutMap), _cutNum(cutNum), |
| 632 | 672 |
_numMap(graph), _retMap(graph), _predMap(graph), _num(0) {}
|
| 633 | 673 |
|
| 634 | 674 |
void start(const Node& node) {
|
| 635 | 675 |
_predMap.set(node, INVALID); |
| 636 | 676 |
rootCut = false; |
| 637 | 677 |
} |
| 638 | 678 |
|
| 639 | 679 |
void reach(const Node& node) {
|
| 640 | 680 |
_numMap.set(node, _num); |
| 641 | 681 |
_retMap.set(node, _num); |
| 642 | 682 |
++_num; |
| 643 | 683 |
} |
| 644 | 684 |
|
| 645 | 685 |
void discover(const Arc& edge) {
|
| 646 | 686 |
_predMap.set(_graph.target(edge), _graph.source(edge)); |
| 647 | 687 |
} |
| 648 | 688 |
|
| 649 | 689 |
void examine(const Arc& edge) {
|
| 650 | 690 |
if (_graph.source(edge) == _graph.target(edge) && |
| 651 | 691 |
_graph.direction(edge)) {
|
| 652 | 692 |
if (!_cutMap[_graph.source(edge)]) {
|
| 653 | 693 |
_cutMap.set(_graph.source(edge), true); |
| 654 | 694 |
++_cutNum; |
| 655 | 695 |
} |
| 656 | 696 |
return; |
| 657 | 697 |
} |
| 658 | 698 |
if (_predMap[_graph.source(edge)] == _graph.target(edge)) return; |
| 659 | 699 |
if (_retMap[_graph.source(edge)] > _numMap[_graph.target(edge)]) {
|
| 660 | 700 |
_retMap.set(_graph.source(edge), _numMap[_graph.target(edge)]); |
| 661 | 701 |
} |
| 662 | 702 |
} |
| 663 | 703 |
|
| 664 | 704 |
void backtrack(const Arc& edge) {
|
| 665 | 705 |
if (_retMap[_graph.source(edge)] > _retMap[_graph.target(edge)]) {
|
| 666 | 706 |
_retMap.set(_graph.source(edge), _retMap[_graph.target(edge)]); |
| 667 | 707 |
} |
| 668 | 708 |
if (_numMap[_graph.source(edge)] <= _retMap[_graph.target(edge)]) {
|
| 669 | 709 |
if (_predMap[_graph.source(edge)] != INVALID) {
|
| 670 | 710 |
if (!_cutMap[_graph.source(edge)]) {
|
| 671 | 711 |
_cutMap.set(_graph.source(edge), true); |
| 672 | 712 |
++_cutNum; |
| 673 | 713 |
} |
| 674 | 714 |
} else if (rootCut) {
|
| 675 | 715 |
if (!_cutMap[_graph.source(edge)]) {
|
| 676 | 716 |
_cutMap.set(_graph.source(edge), true); |
| 677 | 717 |
++_cutNum; |
| 678 | 718 |
} |
| 679 | 719 |
} else {
|
| 680 | 720 |
rootCut = true; |
| 681 | 721 |
} |
| 682 | 722 |
} |
| 683 | 723 |
} |
| 684 | 724 |
|
| 685 | 725 |
private: |
| 686 | 726 |
const Digraph& _graph; |
| 687 | 727 |
NodeMap& _cutMap; |
| 688 | 728 |
int& _cutNum; |
| 689 | 729 |
|
| 690 | 730 |
typename Digraph::template NodeMap<int> _numMap; |
| 691 | 731 |
typename Digraph::template NodeMap<int> _retMap; |
| 692 | 732 |
typename Digraph::template NodeMap<Node> _predMap; |
| 693 | 733 |
std::stack<Edge> _edgeStack; |
| 694 | 734 |
int _num; |
| 695 | 735 |
bool rootCut; |
| 696 | 736 |
}; |
| 697 | 737 |
|
| 698 | 738 |
} |
| 699 | 739 |
|
| 700 | 740 |
template <typename Graph> |
| 701 | 741 |
int countBiNodeConnectedComponents(const Graph& graph); |
| 702 | 742 |
|
| 703 |
/// \ingroup |
|
| 743 |
/// \ingroup graph_properties |
|
| 704 | 744 |
/// |
| 705 |
/// \brief |
|
| 745 |
/// \brief Check whether an undirected graph is bi-node-connected. |
|
| 706 | 746 |
/// |
| 707 |
/// This function checks that the undirected graph is bi-node-connected |
|
| 708 |
/// graph. The graph is bi-node-connected if any two undirected edge is |
|
| 709 |
/// |
|
| 747 |
/// This function checks whether the given undirected graph is |
|
| 748 |
/// bi-node-connected, i.e. any two edges are on same circle. |
|
| 710 | 749 |
/// |
| 711 |
/// \param graph The graph. |
|
| 712 |
/// \return %True when the graph bi-node-connected. |
|
| 750 |
/// \return \c true if the graph bi-node-connected. |
|
| 751 |
/// \note By definition, the empty graph is bi-node-connected. |
|
| 752 |
/// |
|
| 753 |
/// \see countBiNodeConnectedComponents(), biNodeConnectedComponents() |
|
| 713 | 754 |
template <typename Graph> |
| 714 | 755 |
bool biNodeConnected(const Graph& graph) {
|
| 715 | 756 |
return countBiNodeConnectedComponents(graph) <= 1; |
| 716 | 757 |
} |
| 717 | 758 |
|
| 718 |
/// \ingroup |
|
| 759 |
/// \ingroup graph_properties |
|
| 719 | 760 |
/// |
| 720 |
/// \brief Count the |
|
| 761 |
/// \brief Count the number of bi-node-connected components of an |
|
| 762 |
/// undirected graph. |
|
| 721 | 763 |
/// |
| 722 |
/// This function finds the bi-node-connected components in an undirected |
|
| 723 |
/// graph. The biconnected components are the classes of an equivalence |
|
| 724 |
/// relation on the undirected edges. Two undirected edge is in relationship |
|
| 725 |
/// when they are on same circle. |
|
| 764 |
/// This function counts the number of bi-node-connected components of |
|
| 765 |
/// the given undirected graph. |
|
| 726 | 766 |
/// |
| 727 |
/// \param graph The graph. |
|
| 728 |
/// \return The number of components. |
|
| 767 |
/// The bi-node-connected components are the classes of an equivalence |
|
| 768 |
/// relation on the edges of a undirected graph. Two edges are in the |
|
| 769 |
/// same class if they are on same circle. |
|
| 770 |
/// |
|
| 771 |
/// \return The number of bi-node-connected components. |
|
| 772 |
/// |
|
| 773 |
/// \see biNodeConnected(), biNodeConnectedComponents() |
|
| 729 | 774 |
template <typename Graph> |
| 730 | 775 |
int countBiNodeConnectedComponents(const Graph& graph) {
|
| 731 | 776 |
checkConcept<concepts::Graph, Graph>(); |
| 732 | 777 |
typedef typename Graph::NodeIt NodeIt; |
| 733 | 778 |
|
| 734 | 779 |
using namespace _connectivity_bits; |
| 735 | 780 |
|
| 736 | 781 |
typedef CountBiNodeConnectedComponentsVisitor<Graph> Visitor; |
| 737 | 782 |
|
| 738 | 783 |
int compNum = 0; |
| 739 | 784 |
Visitor visitor(graph, compNum); |
| 740 | 785 |
|
| 741 | 786 |
DfsVisit<Graph, Visitor> dfs(graph, visitor); |
| 742 | 787 |
dfs.init(); |
| 743 | 788 |
|
| 744 | 789 |
for (NodeIt it(graph); it != INVALID; ++it) {
|
| 745 | 790 |
if (!dfs.reached(it)) {
|
| 746 | 791 |
dfs.addSource(it); |
| 747 | 792 |
dfs.start(); |
| 748 | 793 |
} |
| 749 | 794 |
} |
| 750 | 795 |
return compNum; |
| 751 | 796 |
} |
| 752 | 797 |
|
| 753 |
/// \ingroup |
|
| 798 |
/// \ingroup graph_properties |
|
| 754 | 799 |
/// |
| 755 |
/// \brief Find the bi-node-connected components. |
|
| 800 |
/// \brief Find the bi-node-connected components of an undirected graph. |
|
| 756 | 801 |
/// |
| 757 |
/// This function finds the bi-node-connected components in an undirected |
|
| 758 |
/// graph. The bi-node-connected components are the classes of an equivalence |
|
| 759 |
/// relation on the undirected edges. Two undirected edge are in relationship |
|
| 760 |
/// when they are on same circle. |
|
| 802 |
/// This function finds the bi-node-connected components of the given |
|
| 803 |
/// undirected graph. |
|
| 761 | 804 |
/// |
| 762 |
/// \param graph The graph. |
|
| 763 |
/// \retval compMap A writable uedge map. The values will be set from 0 |
|
| 764 |
/// to the number of the biconnected components minus one. Each values |
|
| 765 |
/// of the map will be set exactly once, the values of a certain component |
|
| 766 |
/// will be set continuously. |
|
| 767 |
/// \return The number of components. |
|
| 805 |
/// The bi-node-connected components are the classes of an equivalence |
|
| 806 |
/// relation on the edges of a undirected graph. Two edges are in the |
|
| 807 |
/// same class if they are on same circle. |
|
| 768 | 808 |
/// |
| 809 |
/// \image html node_biconnected_components.png |
|
| 810 |
/// \image latex node_biconnected_components.eps "bi-node-connected components" width=\textwidth |
|
| 811 |
/// |
|
| 812 |
/// \param graph The undirected graph. |
|
| 813 |
/// \retval compMap A writable edge map. The values will be set from 0 |
|
| 814 |
/// to the number of the bi-node-connected components minus one. Each |
|
| 815 |
/// value of the map will be set exactly once, and the values of a |
|
| 816 |
/// certain component will be set continuously. |
|
| 817 |
/// \return The number of bi-node-connected components. |
|
| 818 |
/// |
|
| 819 |
/// \see biNodeConnected(), countBiNodeConnectedComponents() |
|
| 769 | 820 |
template <typename Graph, typename EdgeMap> |
| 770 | 821 |
int biNodeConnectedComponents(const Graph& graph, |
| 771 | 822 |
EdgeMap& compMap) {
|
| 772 | 823 |
checkConcept<concepts::Graph, Graph>(); |
| 773 | 824 |
typedef typename Graph::NodeIt NodeIt; |
| 774 | 825 |
typedef typename Graph::Edge Edge; |
| 775 | 826 |
checkConcept<concepts::WriteMap<Edge, int>, EdgeMap>(); |
| 776 | 827 |
|
| 777 | 828 |
using namespace _connectivity_bits; |
| 778 | 829 |
|
| 779 | 830 |
typedef BiNodeConnectedComponentsVisitor<Graph, EdgeMap> Visitor; |
| 780 | 831 |
|
| 781 | 832 |
int compNum = 0; |
| 782 | 833 |
Visitor visitor(graph, compMap, compNum); |
| 783 | 834 |
|
| 784 | 835 |
DfsVisit<Graph, Visitor> dfs(graph, visitor); |
| 785 | 836 |
dfs.init(); |
| 786 | 837 |
|
| 787 | 838 |
for (NodeIt it(graph); it != INVALID; ++it) {
|
| 788 | 839 |
if (!dfs.reached(it)) {
|
| 789 | 840 |
dfs.addSource(it); |
| 790 | 841 |
dfs.start(); |
| 791 | 842 |
} |
| 792 | 843 |
} |
| 793 | 844 |
return compNum; |
| 794 | 845 |
} |
| 795 | 846 |
|
| 796 |
/// \ingroup |
|
| 847 |
/// \ingroup graph_properties |
|
| 797 | 848 |
/// |
| 798 |
/// \brief Find the bi-node-connected cut nodes. |
|
| 849 |
/// \brief Find the bi-node-connected cut nodes in an undirected graph. |
|
| 799 | 850 |
/// |
| 800 |
/// This function finds the bi-node-connected cut nodes in an undirected |
|
| 801 |
/// graph. The bi-node-connected components are the classes of an equivalence |
|
| 802 |
/// relation on the undirected edges. Two undirected edges are in |
|
| 803 |
/// relationship when they are on same circle. The biconnected components |
|
| 804 |
/// |
|
| 851 |
/// This function finds the bi-node-connected cut nodes in the given |
|
| 852 |
/// undirected graph. |
|
| 805 | 853 |
/// |
| 806 |
/// \param graph The graph. |
|
| 807 |
/// \retval cutMap A writable edge map. The values will be set true when |
|
| 808 |
/// |
|
| 854 |
/// The bi-node-connected components are the classes of an equivalence |
|
| 855 |
/// relation on the edges of a undirected graph. Two edges are in the |
|
| 856 |
/// same class if they are on same circle. |
|
| 857 |
/// The bi-node-connected components are separted by the cut nodes of |
|
| 858 |
/// the components. |
|
| 859 |
/// |
|
| 860 |
/// \param graph The undirected graph. |
|
| 861 |
/// \retval cutMap A writable node map. The values will be set to |
|
| 862 |
/// \c true for the nodes that separate two or more components |
|
| 863 |
/// (exactly once for each cut node), and will not be changed for |
|
| 864 |
/// other nodes. |
|
| 809 | 865 |
/// \return The number of the cut nodes. |
| 866 |
/// |
|
| 867 |
/// \see biNodeConnected(), biNodeConnectedComponents() |
|
| 810 | 868 |
template <typename Graph, typename NodeMap> |
| 811 | 869 |
int biNodeConnectedCutNodes(const Graph& graph, NodeMap& cutMap) {
|
| 812 | 870 |
checkConcept<concepts::Graph, Graph>(); |
| 813 | 871 |
typedef typename Graph::Node Node; |
| 814 | 872 |
typedef typename Graph::NodeIt NodeIt; |
| 815 | 873 |
checkConcept<concepts::WriteMap<Node, bool>, NodeMap>(); |
| 816 | 874 |
|
| 817 | 875 |
using namespace _connectivity_bits; |
| 818 | 876 |
|
| 819 | 877 |
typedef BiNodeConnectedCutNodesVisitor<Graph, NodeMap> Visitor; |
| 820 | 878 |
|
| 821 | 879 |
int cutNum = 0; |
| 822 | 880 |
Visitor visitor(graph, cutMap, cutNum); |
| 823 | 881 |
|
| 824 | 882 |
DfsVisit<Graph, Visitor> dfs(graph, visitor); |
| 825 | 883 |
dfs.init(); |
| 826 | 884 |
|
| 827 | 885 |
for (NodeIt it(graph); it != INVALID; ++it) {
|
| 828 | 886 |
if (!dfs.reached(it)) {
|
| 829 | 887 |
dfs.addSource(it); |
| 830 | 888 |
dfs.start(); |
| 831 | 889 |
} |
| 832 | 890 |
} |
| 833 | 891 |
return cutNum; |
| 834 | 892 |
} |
| 835 | 893 |
|
| 836 | 894 |
namespace _connectivity_bits {
|
| 837 | 895 |
|
| 838 | 896 |
template <typename Digraph> |
| 839 | 897 |
class CountBiEdgeConnectedComponentsVisitor : public DfsVisitor<Digraph> {
|
| 840 | 898 |
public: |
| 841 | 899 |
typedef typename Digraph::Node Node; |
| 842 | 900 |
typedef typename Digraph::Arc Arc; |
| 843 | 901 |
typedef typename Digraph::Edge Edge; |
| 844 | 902 |
|
| 845 | 903 |
CountBiEdgeConnectedComponentsVisitor(const Digraph& graph, int &compNum) |
| 846 | 904 |
: _graph(graph), _compNum(compNum), |
| 847 | 905 |
_numMap(graph), _retMap(graph), _predMap(graph), _num(0) {}
|
| 848 | 906 |
|
| 849 | 907 |
void start(const Node& node) {
|
| 850 | 908 |
_predMap.set(node, INVALID); |
| 851 | 909 |
} |
| 852 | 910 |
|
| 853 | 911 |
void reach(const Node& node) {
|
| 854 | 912 |
_numMap.set(node, _num); |
| 855 | 913 |
_retMap.set(node, _num); |
| 856 | 914 |
++_num; |
| 857 | 915 |
} |
| 858 | 916 |
|
| 859 | 917 |
void leave(const Node& node) {
|
| 860 | 918 |
if (_numMap[node] <= _retMap[node]) {
|
| 861 | 919 |
++_compNum; |
| 862 | 920 |
} |
| 863 | 921 |
} |
| 864 | 922 |
|
| 865 | 923 |
void discover(const Arc& edge) {
|
| 866 | 924 |
_predMap.set(_graph.target(edge), edge); |
| 867 | 925 |
} |
| 868 | 926 |
|
| 869 | 927 |
void examine(const Arc& edge) {
|
| 870 | 928 |
if (_predMap[_graph.source(edge)] == _graph.oppositeArc(edge)) {
|
| 871 | 929 |
return; |
| 872 | 930 |
} |
| 873 | 931 |
if (_retMap[_graph.source(edge)] > _retMap[_graph.target(edge)]) {
|
| 874 | 932 |
_retMap.set(_graph.source(edge), _retMap[_graph.target(edge)]); |
| 875 | 933 |
} |
| 876 | 934 |
} |
| 877 | 935 |
|
| 878 | 936 |
void backtrack(const Arc& edge) {
|
| 879 | 937 |
if (_retMap[_graph.source(edge)] > _retMap[_graph.target(edge)]) {
|
| 880 | 938 |
_retMap.set(_graph.source(edge), _retMap[_graph.target(edge)]); |
| 881 | 939 |
} |
| 882 | 940 |
} |
| 883 | 941 |
|
| 884 | 942 |
private: |
| 885 | 943 |
const Digraph& _graph; |
| 886 | 944 |
int& _compNum; |
| 887 | 945 |
|
| 888 | 946 |
typename Digraph::template NodeMap<int> _numMap; |
| 889 | 947 |
typename Digraph::template NodeMap<int> _retMap; |
| 890 | 948 |
typename Digraph::template NodeMap<Arc> _predMap; |
| 891 | 949 |
int _num; |
| 892 | 950 |
}; |
| 893 | 951 |
|
| 894 | 952 |
template <typename Digraph, typename NodeMap> |
| 895 | 953 |
class BiEdgeConnectedComponentsVisitor : public DfsVisitor<Digraph> {
|
| 896 | 954 |
public: |
| 897 | 955 |
typedef typename Digraph::Node Node; |
| 898 | 956 |
typedef typename Digraph::Arc Arc; |
| 899 | 957 |
typedef typename Digraph::Edge Edge; |
| 900 | 958 |
|
| 901 | 959 |
BiEdgeConnectedComponentsVisitor(const Digraph& graph, |
| 902 | 960 |
NodeMap& compMap, int &compNum) |
| 903 | 961 |
: _graph(graph), _compMap(compMap), _compNum(compNum), |
| 904 | 962 |
_numMap(graph), _retMap(graph), _predMap(graph), _num(0) {}
|
| 905 | 963 |
|
| 906 | 964 |
void start(const Node& node) {
|
| 907 | 965 |
_predMap.set(node, INVALID); |
| 908 | 966 |
} |
| 909 | 967 |
|
| 910 | 968 |
void reach(const Node& node) {
|
| 911 | 969 |
_numMap.set(node, _num); |
| 912 | 970 |
_retMap.set(node, _num); |
| 913 | 971 |
_nodeStack.push(node); |
| 914 | 972 |
++_num; |
| 915 | 973 |
} |
| 916 | 974 |
|
| 917 | 975 |
void leave(const Node& node) {
|
| 918 | 976 |
if (_numMap[node] <= _retMap[node]) {
|
| 919 | 977 |
while (_nodeStack.top() != node) {
|
| 920 | 978 |
_compMap.set(_nodeStack.top(), _compNum); |
| 921 | 979 |
_nodeStack.pop(); |
| 922 | 980 |
} |
| 923 | 981 |
_compMap.set(node, _compNum); |
| 924 | 982 |
_nodeStack.pop(); |
| 925 | 983 |
++_compNum; |
| 926 | 984 |
} |
| 927 | 985 |
} |
| 928 | 986 |
|
| 929 | 987 |
void discover(const Arc& edge) {
|
| 930 | 988 |
_predMap.set(_graph.target(edge), edge); |
| 931 | 989 |
} |
| 932 | 990 |
|
| 933 | 991 |
void examine(const Arc& edge) {
|
| 934 | 992 |
if (_predMap[_graph.source(edge)] == _graph.oppositeArc(edge)) {
|
| 935 | 993 |
return; |
| 936 | 994 |
} |
| 937 | 995 |
if (_retMap[_graph.source(edge)] > _retMap[_graph.target(edge)]) {
|
| 938 | 996 |
_retMap.set(_graph.source(edge), _retMap[_graph.target(edge)]); |
| 939 | 997 |
} |
| 940 | 998 |
} |
| 941 | 999 |
|
| 942 | 1000 |
void backtrack(const Arc& edge) {
|
| 943 | 1001 |
if (_retMap[_graph.source(edge)] > _retMap[_graph.target(edge)]) {
|
| 944 | 1002 |
_retMap.set(_graph.source(edge), _retMap[_graph.target(edge)]); |
| 945 | 1003 |
} |
| 946 | 1004 |
} |
| 947 | 1005 |
|
| 948 | 1006 |
private: |
| 949 | 1007 |
const Digraph& _graph; |
| 950 | 1008 |
NodeMap& _compMap; |
| 951 | 1009 |
int& _compNum; |
| 952 | 1010 |
|
| 953 | 1011 |
typename Digraph::template NodeMap<int> _numMap; |
| 954 | 1012 |
typename Digraph::template NodeMap<int> _retMap; |
| 955 | 1013 |
typename Digraph::template NodeMap<Arc> _predMap; |
| 956 | 1014 |
std::stack<Node> _nodeStack; |
| 957 | 1015 |
int _num; |
| 958 | 1016 |
}; |
| 959 | 1017 |
|
| 960 | 1018 |
|
| 961 | 1019 |
template <typename Digraph, typename ArcMap> |
| 962 | 1020 |
class BiEdgeConnectedCutEdgesVisitor : public DfsVisitor<Digraph> {
|
| 963 | 1021 |
public: |
| 964 | 1022 |
typedef typename Digraph::Node Node; |
| 965 | 1023 |
typedef typename Digraph::Arc Arc; |
| 966 | 1024 |
typedef typename Digraph::Edge Edge; |
| 967 | 1025 |
|
| 968 | 1026 |
BiEdgeConnectedCutEdgesVisitor(const Digraph& graph, |
| 969 | 1027 |
ArcMap& cutMap, int &cutNum) |
| 970 | 1028 |
: _graph(graph), _cutMap(cutMap), _cutNum(cutNum), |
| 971 | 1029 |
_numMap(graph), _retMap(graph), _predMap(graph), _num(0) {}
|
| 972 | 1030 |
|
| 973 | 1031 |
void start(const Node& node) {
|
| 974 | 1032 |
_predMap[node] = INVALID; |
| 975 | 1033 |
} |
| 976 | 1034 |
|
| 977 | 1035 |
void reach(const Node& node) {
|
| 978 | 1036 |
_numMap.set(node, _num); |
| 979 | 1037 |
_retMap.set(node, _num); |
| 980 | 1038 |
++_num; |
| 981 | 1039 |
} |
| 982 | 1040 |
|
| 983 | 1041 |
void leave(const Node& node) {
|
| 984 | 1042 |
if (_numMap[node] <= _retMap[node]) {
|
| 985 | 1043 |
if (_predMap[node] != INVALID) {
|
| 986 | 1044 |
_cutMap.set(_predMap[node], true); |
| 987 | 1045 |
++_cutNum; |
| 988 | 1046 |
} |
| 989 | 1047 |
} |
| 990 | 1048 |
} |
| 991 | 1049 |
|
| 992 | 1050 |
void discover(const Arc& edge) {
|
| 993 | 1051 |
_predMap.set(_graph.target(edge), edge); |
| 994 | 1052 |
} |
| 995 | 1053 |
|
| 996 | 1054 |
void examine(const Arc& edge) {
|
| 997 | 1055 |
if (_predMap[_graph.source(edge)] == _graph.oppositeArc(edge)) {
|
| 998 | 1056 |
return; |
| 999 | 1057 |
} |
| 1000 | 1058 |
if (_retMap[_graph.source(edge)] > _retMap[_graph.target(edge)]) {
|
| 1001 | 1059 |
_retMap.set(_graph.source(edge), _retMap[_graph.target(edge)]); |
| 1002 | 1060 |
} |
| 1003 | 1061 |
} |
| 1004 | 1062 |
|
| 1005 | 1063 |
void backtrack(const Arc& edge) {
|
| 1006 | 1064 |
if (_retMap[_graph.source(edge)] > _retMap[_graph.target(edge)]) {
|
| 1007 | 1065 |
_retMap.set(_graph.source(edge), _retMap[_graph.target(edge)]); |
| 1008 | 1066 |
} |
| 1009 | 1067 |
} |
| 1010 | 1068 |
|
| 1011 | 1069 |
private: |
| 1012 | 1070 |
const Digraph& _graph; |
| 1013 | 1071 |
ArcMap& _cutMap; |
| 1014 | 1072 |
int& _cutNum; |
| 1015 | 1073 |
|
| 1016 | 1074 |
typename Digraph::template NodeMap<int> _numMap; |
| 1017 | 1075 |
typename Digraph::template NodeMap<int> _retMap; |
| 1018 | 1076 |
typename Digraph::template NodeMap<Arc> _predMap; |
| 1019 | 1077 |
int _num; |
| 1020 | 1078 |
}; |
| 1021 | 1079 |
} |
| 1022 | 1080 |
|
| 1023 | 1081 |
template <typename Graph> |
| 1024 | 1082 |
int countBiEdgeConnectedComponents(const Graph& graph); |
| 1025 | 1083 |
|
| 1026 |
/// \ingroup |
|
| 1084 |
/// \ingroup graph_properties |
|
| 1027 | 1085 |
/// |
| 1028 |
/// \brief |
|
| 1086 |
/// \brief Check whether an undirected graph is bi-edge-connected. |
|
| 1029 | 1087 |
/// |
| 1030 |
/// This function checks that the graph is bi-edge-connected. The undirected |
|
| 1031 |
/// graph is bi-edge-connected when any two nodes are connected with two |
|
| 1032 |
/// |
|
| 1088 |
/// This function checks whether the given undirected graph is |
|
| 1089 |
/// bi-edge-connected, i.e. any two nodes are connected with at least |
|
| 1090 |
/// two edge-disjoint paths. |
|
| 1033 | 1091 |
/// |
| 1034 |
/// \param graph The undirected graph. |
|
| 1035 |
/// \return The number of components. |
|
| 1092 |
/// \return \c true if the graph is bi-edge-connected. |
|
| 1093 |
/// \note By definition, the empty graph is bi-edge-connected. |
|
| 1094 |
/// |
|
| 1095 |
/// \see countBiEdgeConnectedComponents(), biEdgeConnectedComponents() |
|
| 1036 | 1096 |
template <typename Graph> |
| 1037 | 1097 |
bool biEdgeConnected(const Graph& graph) {
|
| 1038 | 1098 |
return countBiEdgeConnectedComponents(graph) <= 1; |
| 1039 | 1099 |
} |
| 1040 | 1100 |
|
| 1041 |
/// \ingroup |
|
| 1101 |
/// \ingroup graph_properties |
|
| 1042 | 1102 |
/// |
| 1043 |
/// \brief Count the bi-edge-connected components |
|
| 1103 |
/// \brief Count the number of bi-edge-connected components of an |
|
| 1104 |
/// undirected graph. |
|
| 1044 | 1105 |
/// |
| 1045 |
/// This function count the bi-edge-connected components in an undirected |
|
| 1046 |
/// graph. The bi-edge-connected components are the classes of an equivalence |
|
| 1047 |
/// relation on the nodes. Two nodes are in relationship when they are |
|
| 1048 |
/// connected with at least two edge-disjoint paths. |
|
| 1106 |
/// This function counts the number of bi-edge-connected components of |
|
| 1107 |
/// the given undirected graph. |
|
| 1049 | 1108 |
/// |
| 1050 |
/// \param graph The undirected graph. |
|
| 1051 |
/// \return The number of components. |
|
| 1109 |
/// The bi-edge-connected components are the classes of an equivalence |
|
| 1110 |
/// relation on the nodes of an undirected graph. Two nodes are in the |
|
| 1111 |
/// same class if they are connected with at least two edge-disjoint |
|
| 1112 |
/// paths. |
|
| 1113 |
/// |
|
| 1114 |
/// \return The number of bi-edge-connected components. |
|
| 1115 |
/// |
|
| 1116 |
/// \see biEdgeConnected(), biEdgeConnectedComponents() |
|
| 1052 | 1117 |
template <typename Graph> |
| 1053 | 1118 |
int countBiEdgeConnectedComponents(const Graph& graph) {
|
| 1054 | 1119 |
checkConcept<concepts::Graph, Graph>(); |
| 1055 | 1120 |
typedef typename Graph::NodeIt NodeIt; |
| 1056 | 1121 |
|
| 1057 | 1122 |
using namespace _connectivity_bits; |
| 1058 | 1123 |
|
| 1059 | 1124 |
typedef CountBiEdgeConnectedComponentsVisitor<Graph> Visitor; |
| 1060 | 1125 |
|
| 1061 | 1126 |
int compNum = 0; |
| 1062 | 1127 |
Visitor visitor(graph, compNum); |
| 1063 | 1128 |
|
| 1064 | 1129 |
DfsVisit<Graph, Visitor> dfs(graph, visitor); |
| 1065 | 1130 |
dfs.init(); |
| 1066 | 1131 |
|
| 1067 | 1132 |
for (NodeIt it(graph); it != INVALID; ++it) {
|
| 1068 | 1133 |
if (!dfs.reached(it)) {
|
| 1069 | 1134 |
dfs.addSource(it); |
| 1070 | 1135 |
dfs.start(); |
| 1071 | 1136 |
} |
| 1072 | 1137 |
} |
| 1073 | 1138 |
return compNum; |
| 1074 | 1139 |
} |
| 1075 | 1140 |
|
| 1076 |
/// \ingroup |
|
| 1141 |
/// \ingroup graph_properties |
|
| 1077 | 1142 |
/// |
| 1078 |
/// \brief Find the bi-edge-connected components. |
|
| 1143 |
/// \brief Find the bi-edge-connected components of an undirected graph. |
|
| 1079 | 1144 |
/// |
| 1080 |
/// This function finds the bi-edge-connected components in an undirected |
|
| 1081 |
/// graph. The bi-edge-connected components are the classes of an equivalence |
|
| 1082 |
/// relation on the nodes. Two nodes are in relationship when they are |
|
| 1083 |
/// connected at least two edge-disjoint paths. |
|
| 1145 |
/// This function finds the bi-edge-connected components of the given |
|
| 1146 |
/// undirected graph. |
|
| 1084 | 1147 |
/// |
| 1085 |
/// |
|
| 1148 |
/// The bi-edge-connected components are the classes of an equivalence |
|
| 1149 |
/// relation on the nodes of an undirected graph. Two nodes are in the |
|
| 1150 |
/// same class if they are connected with at least two edge-disjoint |
|
| 1151 |
/// paths. |
|
| 1152 |
/// |
|
| 1153 |
/// \image html edge_biconnected_components.png |
|
| 1154 |
/// \image latex edge_biconnected_components.eps "bi-edge-connected components" width=\textwidth |
|
| 1155 |
/// |
|
| 1156 |
/// \param graph The undirected graph. |
|
| 1086 | 1157 |
/// \retval compMap A writable node map. The values will be set from 0 to |
| 1087 |
/// the number of the biconnected components minus one. Each values |
|
| 1088 |
/// of the map will be set exactly once, the values of a certain component |
|
| 1089 |
/// will be set continuously. |
|
| 1090 |
/// \return The number of components. |
|
| 1158 |
/// the number of the bi-edge-connected components minus one. Each value |
|
| 1159 |
/// of the map will be set exactly once, and the values of a certain |
|
| 1160 |
/// component will be set continuously. |
|
| 1161 |
/// \return The number of bi-edge-connected components. |
|
| 1091 | 1162 |
/// |
| 1163 |
/// \see biEdgeConnected(), countBiEdgeConnectedComponents() |
|
| 1092 | 1164 |
template <typename Graph, typename NodeMap> |
| 1093 | 1165 |
int biEdgeConnectedComponents(const Graph& graph, NodeMap& compMap) {
|
| 1094 | 1166 |
checkConcept<concepts::Graph, Graph>(); |
| 1095 | 1167 |
typedef typename Graph::NodeIt NodeIt; |
| 1096 | 1168 |
typedef typename Graph::Node Node; |
| 1097 | 1169 |
checkConcept<concepts::WriteMap<Node, int>, NodeMap>(); |
| 1098 | 1170 |
|
| 1099 | 1171 |
using namespace _connectivity_bits; |
| 1100 | 1172 |
|
| 1101 | 1173 |
typedef BiEdgeConnectedComponentsVisitor<Graph, NodeMap> Visitor; |
| 1102 | 1174 |
|
| 1103 | 1175 |
int compNum = 0; |
| 1104 | 1176 |
Visitor visitor(graph, compMap, compNum); |
| 1105 | 1177 |
|
| 1106 | 1178 |
DfsVisit<Graph, Visitor> dfs(graph, visitor); |
| 1107 | 1179 |
dfs.init(); |
| 1108 | 1180 |
|
| 1109 | 1181 |
for (NodeIt it(graph); it != INVALID; ++it) {
|
| 1110 | 1182 |
if (!dfs.reached(it)) {
|
| 1111 | 1183 |
dfs.addSource(it); |
| 1112 | 1184 |
dfs.start(); |
| 1113 | 1185 |
} |
| 1114 | 1186 |
} |
| 1115 | 1187 |
return compNum; |
| 1116 | 1188 |
} |
| 1117 | 1189 |
|
| 1118 |
/// \ingroup |
|
| 1190 |
/// \ingroup graph_properties |
|
| 1119 | 1191 |
/// |
| 1120 |
/// \brief Find the bi-edge-connected cut edges. |
|
| 1192 |
/// \brief Find the bi-edge-connected cut edges in an undirected graph. |
|
| 1121 | 1193 |
/// |
| 1122 |
/// This function finds the bi-edge-connected components in an undirected |
|
| 1123 |
/// graph. The bi-edge-connected components are the classes of an equivalence |
|
| 1124 |
/// relation on the nodes. Two nodes are in relationship when they are |
|
| 1125 |
/// connected with at least two edge-disjoint paths. The bi-edge-connected |
|
| 1126 |
/// components are separted by edges which are the cut edges of the |
|
| 1127 |
/// components. |
|
| 1194 |
/// This function finds the bi-edge-connected cut edges in the given |
|
| 1195 |
/// undirected graph. |
|
| 1128 | 1196 |
/// |
| 1129 |
/// \param graph The graph. |
|
| 1130 |
/// \retval cutMap A writable node map. The values will be set true when the |
|
| 1131 |
/// edge |
|
| 1197 |
/// The bi-edge-connected components are the classes of an equivalence |
|
| 1198 |
/// relation on the nodes of an undirected graph. Two nodes are in the |
|
| 1199 |
/// same class if they are connected with at least two edge-disjoint |
|
| 1200 |
/// paths. |
|
| 1201 |
/// The bi-edge-connected components are separted by the cut edges of |
|
| 1202 |
/// the components. |
|
| 1203 |
/// |
|
| 1204 |
/// \param graph The undirected graph. |
|
| 1205 |
/// \retval cutMap A writable edge map. The values will be set to \c true |
|
| 1206 |
/// for the cut edges (exactly once for each cut edge), and will not be |
|
| 1207 |
/// changed for other edges. |
|
| 1132 | 1208 |
/// \return The number of cut edges. |
| 1209 |
/// |
|
| 1210 |
/// \see biEdgeConnected(), biEdgeConnectedComponents() |
|
| 1133 | 1211 |
template <typename Graph, typename EdgeMap> |
| 1134 | 1212 |
int biEdgeConnectedCutEdges(const Graph& graph, EdgeMap& cutMap) {
|
| 1135 | 1213 |
checkConcept<concepts::Graph, Graph>(); |
| 1136 | 1214 |
typedef typename Graph::NodeIt NodeIt; |
| 1137 | 1215 |
typedef typename Graph::Edge Edge; |
| 1138 | 1216 |
checkConcept<concepts::WriteMap<Edge, bool>, EdgeMap>(); |
| 1139 | 1217 |
|
| 1140 | 1218 |
using namespace _connectivity_bits; |
| 1141 | 1219 |
|
| 1142 | 1220 |
typedef BiEdgeConnectedCutEdgesVisitor<Graph, EdgeMap> Visitor; |
| 1143 | 1221 |
|
| 1144 | 1222 |
int cutNum = 0; |
| 1145 | 1223 |
Visitor visitor(graph, cutMap, cutNum); |
| 1146 | 1224 |
|
| 1147 | 1225 |
DfsVisit<Graph, Visitor> dfs(graph, visitor); |
| 1148 | 1226 |
dfs.init(); |
| 1149 | 1227 |
|
| 1150 | 1228 |
for (NodeIt it(graph); it != INVALID; ++it) {
|
| 1151 | 1229 |
if (!dfs.reached(it)) {
|
| 1152 | 1230 |
dfs.addSource(it); |
| 1153 | 1231 |
dfs.start(); |
| 1154 | 1232 |
} |
| 1155 | 1233 |
} |
| 1156 | 1234 |
return cutNum; |
| 1157 | 1235 |
} |
| 1158 | 1236 |
|
| 1159 | 1237 |
|
| 1160 | 1238 |
namespace _connectivity_bits {
|
| 1161 | 1239 |
|
| 1162 | 1240 |
template <typename Digraph, typename IntNodeMap> |
| 1163 | 1241 |
class TopologicalSortVisitor : public DfsVisitor<Digraph> {
|
| 1164 | 1242 |
public: |
| 1165 | 1243 |
typedef typename Digraph::Node Node; |
| 1166 | 1244 |
typedef typename Digraph::Arc edge; |
| 1167 | 1245 |
|
| 1168 | 1246 |
TopologicalSortVisitor(IntNodeMap& order, int num) |
| 1169 | 1247 |
: _order(order), _num(num) {}
|
| 1170 | 1248 |
|
| 1171 | 1249 |
void leave(const Node& node) {
|
| 1172 | 1250 |
_order.set(node, --_num); |
| 1173 | 1251 |
} |
| 1174 | 1252 |
|
| 1175 | 1253 |
private: |
| 1176 | 1254 |
IntNodeMap& _order; |
| 1177 | 1255 |
int _num; |
| 1178 | 1256 |
}; |
| 1179 | 1257 |
|
| 1180 | 1258 |
} |
| 1181 | 1259 |
|
| 1182 |
/// \ingroup |
|
| 1260 |
/// \ingroup graph_properties |
|
| 1261 |
/// |
|
| 1262 |
/// \brief Check whether a digraph is DAG. |
|
| 1263 |
/// |
|
| 1264 |
/// This function checks whether the given digraph is DAG, i.e. |
|
| 1265 |
/// \e Directed \e Acyclic \e Graph. |
|
| 1266 |
/// \return \c true if there is no directed cycle in the digraph. |
|
| 1267 |
/// \see acyclic() |
|
| 1268 |
template <typename Digraph> |
|
| 1269 |
bool dag(const Digraph& digraph) {
|
|
| 1270 |
|
|
| 1271 |
checkConcept<concepts::Digraph, Digraph>(); |
|
| 1272 |
|
|
| 1273 |
typedef typename Digraph::Node Node; |
|
| 1274 |
typedef typename Digraph::NodeIt NodeIt; |
|
| 1275 |
typedef typename Digraph::Arc Arc; |
|
| 1276 |
|
|
| 1277 |
typedef typename Digraph::template NodeMap<bool> ProcessedMap; |
|
| 1278 |
|
|
| 1279 |
typename Dfs<Digraph>::template SetProcessedMap<ProcessedMap>:: |
|
| 1280 |
Create dfs(digraph); |
|
| 1281 |
|
|
| 1282 |
ProcessedMap processed(digraph); |
|
| 1283 |
dfs.processedMap(processed); |
|
| 1284 |
|
|
| 1285 |
dfs.init(); |
|
| 1286 |
for (NodeIt it(digraph); it != INVALID; ++it) {
|
|
| 1287 |
if (!dfs.reached(it)) {
|
|
| 1288 |
dfs.addSource(it); |
|
| 1289 |
while (!dfs.emptyQueue()) {
|
|
| 1290 |
Arc arc = dfs.nextArc(); |
|
| 1291 |
Node target = digraph.target(arc); |
|
| 1292 |
if (dfs.reached(target) && !processed[target]) {
|
|
| 1293 |
return false; |
|
| 1294 |
} |
|
| 1295 |
dfs.processNextArc(); |
|
| 1296 |
} |
|
| 1297 |
} |
|
| 1298 |
} |
|
| 1299 |
return true; |
|
| 1300 |
} |
|
| 1301 |
|
|
| 1302 |
/// \ingroup graph_properties |
|
| 1183 | 1303 |
/// |
| 1184 | 1304 |
/// \brief Sort the nodes of a DAG into topolgical order. |
| 1185 | 1305 |
/// |
| 1186 |
/// |
|
| 1306 |
/// This function sorts the nodes of the given acyclic digraph (DAG) |
|
| 1307 |
/// into topolgical order. |
|
| 1187 | 1308 |
/// |
| 1188 |
/// \param |
|
| 1309 |
/// \param digraph The digraph, which must be DAG. |
|
| 1189 | 1310 |
/// \retval order A writable node map. The values will be set from 0 to |
| 1190 |
/// the number of the nodes in the graph minus one. Each values of the map |
|
| 1191 |
/// will be set exactly once, the values will be set descending order. |
|
| 1311 |
/// the number of the nodes in the digraph minus one. Each value of the |
|
| 1312 |
/// map will be set exactly once, and the values will be set descending |
|
| 1313 |
/// order. |
|
| 1192 | 1314 |
/// |
| 1193 |
/// \see checkedTopologicalSort |
|
| 1194 |
/// \see dag |
|
| 1315 |
/// \see dag(), checkedTopologicalSort() |
|
| 1195 | 1316 |
template <typename Digraph, typename NodeMap> |
| 1196 |
void topologicalSort(const Digraph& |
|
| 1317 |
void topologicalSort(const Digraph& digraph, NodeMap& order) {
|
|
| 1197 | 1318 |
using namespace _connectivity_bits; |
| 1198 | 1319 |
|
| 1199 | 1320 |
checkConcept<concepts::Digraph, Digraph>(); |
| 1200 | 1321 |
checkConcept<concepts::WriteMap<typename Digraph::Node, int>, NodeMap>(); |
| 1201 | 1322 |
|
| 1202 | 1323 |
typedef typename Digraph::Node Node; |
| 1203 | 1324 |
typedef typename Digraph::NodeIt NodeIt; |
| 1204 | 1325 |
typedef typename Digraph::Arc Arc; |
| 1205 | 1326 |
|
| 1206 | 1327 |
TopologicalSortVisitor<Digraph, NodeMap> |
| 1207 |
visitor(order, countNodes( |
|
| 1328 |
visitor(order, countNodes(digraph)); |
|
| 1208 | 1329 |
|
| 1209 | 1330 |
DfsVisit<Digraph, TopologicalSortVisitor<Digraph, NodeMap> > |
| 1210 |
dfs( |
|
| 1331 |
dfs(digraph, visitor); |
|
| 1211 | 1332 |
|
| 1212 | 1333 |
dfs.init(); |
| 1213 |
for (NodeIt it( |
|
| 1334 |
for (NodeIt it(digraph); it != INVALID; ++it) {
|
|
| 1214 | 1335 |
if (!dfs.reached(it)) {
|
| 1215 | 1336 |
dfs.addSource(it); |
| 1216 | 1337 |
dfs.start(); |
| 1217 | 1338 |
} |
| 1218 | 1339 |
} |
| 1219 | 1340 |
} |
| 1220 | 1341 |
|
| 1221 |
/// \ingroup |
|
| 1342 |
/// \ingroup graph_properties |
|
| 1222 | 1343 |
/// |
| 1223 | 1344 |
/// \brief Sort the nodes of a DAG into topolgical order. |
| 1224 | 1345 |
/// |
| 1225 |
/// Sort the nodes of a DAG into topolgical order. It also checks |
|
| 1226 |
/// that the given graph is DAG. |
|
| 1346 |
/// This function sorts the nodes of the given acyclic digraph (DAG) |
|
| 1347 |
/// into topolgical order and also checks whether the given digraph |
|
| 1348 |
/// is DAG. |
|
| 1227 | 1349 |
/// |
| 1228 |
/// \param digraph The graph. It must be directed and acyclic. |
|
| 1229 |
/// \retval order A readable - writable node map. The values will be set |
|
| 1230 |
/// from 0 to the number of the nodes in the graph minus one. Each values |
|
| 1231 |
/// of the map will be set exactly once, the values will be set descending |
|
| 1232 |
/// order. |
|
| 1233 |
/// \return %False when the graph is not DAG. |
|
| 1350 |
/// \param digraph The digraph. |
|
| 1351 |
/// \retval order A readable and writable node map. The values will be |
|
| 1352 |
/// set from 0 to the number of the nodes in the digraph minus one. |
|
| 1353 |
/// Each value of the map will be set exactly once, and the values will |
|
| 1354 |
/// be set descending order. |
|
| 1355 |
/// \return \c false if the digraph is not DAG. |
|
| 1234 | 1356 |
/// |
| 1235 |
/// \see topologicalSort |
|
| 1236 |
/// \see dag |
|
| 1357 |
/// \see dag(), topologicalSort() |
|
| 1237 | 1358 |
template <typename Digraph, typename NodeMap> |
| 1238 | 1359 |
bool checkedTopologicalSort(const Digraph& digraph, NodeMap& order) {
|
| 1239 | 1360 |
using namespace _connectivity_bits; |
| 1240 | 1361 |
|
| 1241 | 1362 |
checkConcept<concepts::Digraph, Digraph>(); |
| 1242 | 1363 |
checkConcept<concepts::ReadWriteMap<typename Digraph::Node, int>, |
| 1243 | 1364 |
NodeMap>(); |
| 1244 | 1365 |
|
| 1245 | 1366 |
typedef typename Digraph::Node Node; |
| 1246 | 1367 |
typedef typename Digraph::NodeIt NodeIt; |
| 1247 | 1368 |
typedef typename Digraph::Arc Arc; |
| 1248 | 1369 |
|
| 1249 | 1370 |
for (NodeIt it(digraph); it != INVALID; ++it) {
|
| 1250 | 1371 |
order.set(it, -1); |
| 1251 | 1372 |
} |
| 1252 | 1373 |
|
| 1253 | 1374 |
TopologicalSortVisitor<Digraph, NodeMap> |
| 1254 | 1375 |
visitor(order, countNodes(digraph)); |
| 1255 | 1376 |
|
| 1256 | 1377 |
DfsVisit<Digraph, TopologicalSortVisitor<Digraph, NodeMap> > |
| 1257 | 1378 |
dfs(digraph, visitor); |
| 1258 | 1379 |
|
| 1259 | 1380 |
dfs.init(); |
| 1260 | 1381 |
for (NodeIt it(digraph); it != INVALID; ++it) {
|
| 1261 | 1382 |
if (!dfs.reached(it)) {
|
| 1262 | 1383 |
dfs.addSource(it); |
| 1263 | 1384 |
while (!dfs.emptyQueue()) {
|
| 1264 | 1385 |
Arc arc = dfs.nextArc(); |
| 1265 | 1386 |
Node target = digraph.target(arc); |
| 1266 | 1387 |
if (dfs.reached(target) && order[target] == -1) {
|
| 1267 | 1388 |
return false; |
| 1268 | 1389 |
} |
| 1269 | 1390 |
dfs.processNextArc(); |
| 1270 | 1391 |
} |
| 1271 | 1392 |
} |
| 1272 | 1393 |
} |
| 1273 | 1394 |
return true; |
| 1274 | 1395 |
} |
| 1275 | 1396 |
|
| 1276 |
/// \ingroup |
|
| 1397 |
/// \ingroup graph_properties |
|
| 1277 | 1398 |
/// |
| 1278 |
/// \brief Check |
|
| 1399 |
/// \brief Check whether an undirected graph is acyclic. |
|
| 1279 | 1400 |
/// |
| 1280 |
/// Check that the given directed graph is a DAG. The DAG is |
|
| 1281 |
/// an Directed Acyclic Digraph. |
|
| 1282 |
/// \return %False when the graph is not DAG. |
|
| 1283 |
/// \see acyclic |
|
| 1284 |
template <typename Digraph> |
|
| 1285 |
bool dag(const Digraph& digraph) {
|
|
| 1286 |
|
|
| 1287 |
checkConcept<concepts::Digraph, Digraph>(); |
|
| 1288 |
|
|
| 1289 |
typedef typename Digraph::Node Node; |
|
| 1290 |
typedef typename Digraph::NodeIt NodeIt; |
|
| 1291 |
typedef typename Digraph::Arc Arc; |
|
| 1292 |
|
|
| 1293 |
typedef typename Digraph::template NodeMap<bool> ProcessedMap; |
|
| 1294 |
|
|
| 1295 |
typename Dfs<Digraph>::template SetProcessedMap<ProcessedMap>:: |
|
| 1296 |
Create dfs(digraph); |
|
| 1297 |
|
|
| 1298 |
ProcessedMap processed(digraph); |
|
| 1299 |
dfs.processedMap(processed); |
|
| 1300 |
|
|
| 1301 |
dfs.init(); |
|
| 1302 |
for (NodeIt it(digraph); it != INVALID; ++it) {
|
|
| 1303 |
if (!dfs.reached(it)) {
|
|
| 1304 |
dfs.addSource(it); |
|
| 1305 |
while (!dfs.emptyQueue()) {
|
|
| 1306 |
Arc edge = dfs.nextArc(); |
|
| 1307 |
Node target = digraph.target(edge); |
|
| 1308 |
if (dfs.reached(target) && !processed[target]) {
|
|
| 1309 |
return false; |
|
| 1310 |
} |
|
| 1311 |
dfs.processNextArc(); |
|
| 1312 |
} |
|
| 1313 |
} |
|
| 1314 |
} |
|
| 1315 |
return true; |
|
| 1316 |
} |
|
| 1317 |
|
|
| 1318 |
/// \ingroup connectivity |
|
| 1319 |
/// |
|
| 1320 |
/// \brief Check that the given undirected graph is acyclic. |
|
| 1321 |
/// |
|
| 1322 |
/// Check that the given undirected graph acyclic. |
|
| 1323 |
/// \param graph The undirected graph. |
|
| 1324 |
/// \return %True when there is no circle in the graph. |
|
| 1325 |
/// \see dag |
|
| 1401 |
/// This function checks whether the given undirected graph is acyclic. |
|
| 1402 |
/// \return \c true if there is no cycle in the graph. |
|
| 1403 |
/// \see dag() |
|
| 1326 | 1404 |
template <typename Graph> |
| 1327 | 1405 |
bool acyclic(const Graph& graph) {
|
| 1328 | 1406 |
checkConcept<concepts::Graph, Graph>(); |
| 1329 | 1407 |
typedef typename Graph::Node Node; |
| 1330 | 1408 |
typedef typename Graph::NodeIt NodeIt; |
| 1331 | 1409 |
typedef typename Graph::Arc Arc; |
| 1332 | 1410 |
Dfs<Graph> dfs(graph); |
| 1333 | 1411 |
dfs.init(); |
| 1334 | 1412 |
for (NodeIt it(graph); it != INVALID; ++it) {
|
| 1335 | 1413 |
if (!dfs.reached(it)) {
|
| 1336 | 1414 |
dfs.addSource(it); |
| 1337 | 1415 |
while (!dfs.emptyQueue()) {
|
| 1338 |
Arc edge = dfs.nextArc(); |
|
| 1339 |
Node source = graph.source(edge); |
|
| 1340 |
|
|
| 1416 |
Arc arc = dfs.nextArc(); |
|
| 1417 |
Node source = graph.source(arc); |
|
| 1418 |
Node target = graph.target(arc); |
|
| 1341 | 1419 |
if (dfs.reached(target) && |
| 1342 |
dfs.predArc(source) != graph.oppositeArc( |
|
| 1420 |
dfs.predArc(source) != graph.oppositeArc(arc)) {
|
|
| 1343 | 1421 |
return false; |
| 1344 | 1422 |
} |
| 1345 | 1423 |
dfs.processNextArc(); |
| 1346 | 1424 |
} |
| 1347 | 1425 |
} |
| 1348 | 1426 |
} |
| 1349 | 1427 |
return true; |
| 1350 | 1428 |
} |
| 1351 | 1429 |
|
| 1352 |
/// \ingroup |
|
| 1430 |
/// \ingroup graph_properties |
|
| 1353 | 1431 |
/// |
| 1354 |
/// \brief Check |
|
| 1432 |
/// \brief Check whether an undirected graph is tree. |
|
| 1355 | 1433 |
/// |
| 1356 |
/// Check that the given undirected graph is tree. |
|
| 1357 |
/// \param graph The undirected graph. |
|
| 1358 |
/// |
|
| 1434 |
/// This function checks whether the given undirected graph is tree. |
|
| 1435 |
/// \return \c true if the graph is acyclic and connected. |
|
| 1436 |
/// \see acyclic(), connected() |
|
| 1359 | 1437 |
template <typename Graph> |
| 1360 | 1438 |
bool tree(const Graph& graph) {
|
| 1361 | 1439 |
checkConcept<concepts::Graph, Graph>(); |
| 1362 | 1440 |
typedef typename Graph::Node Node; |
| 1363 | 1441 |
typedef typename Graph::NodeIt NodeIt; |
| 1364 | 1442 |
typedef typename Graph::Arc Arc; |
| 1443 |
if (NodeIt(graph) == INVALID) return true; |
|
| 1365 | 1444 |
Dfs<Graph> dfs(graph); |
| 1366 | 1445 |
dfs.init(); |
| 1367 | 1446 |
dfs.addSource(NodeIt(graph)); |
| 1368 | 1447 |
while (!dfs.emptyQueue()) {
|
| 1369 |
Arc edge = dfs.nextArc(); |
|
| 1370 |
Node source = graph.source(edge); |
|
| 1371 |
|
|
| 1448 |
Arc arc = dfs.nextArc(); |
|
| 1449 |
Node source = graph.source(arc); |
|
| 1450 |
Node target = graph.target(arc); |
|
| 1372 | 1451 |
if (dfs.reached(target) && |
| 1373 |
dfs.predArc(source) != graph.oppositeArc( |
|
| 1452 |
dfs.predArc(source) != graph.oppositeArc(arc)) {
|
|
| 1374 | 1453 |
return false; |
| 1375 | 1454 |
} |
| 1376 | 1455 |
dfs.processNextArc(); |
| 1377 | 1456 |
} |
| 1378 | 1457 |
for (NodeIt it(graph); it != INVALID; ++it) {
|
| 1379 | 1458 |
if (!dfs.reached(it)) {
|
| 1380 | 1459 |
return false; |
| 1381 | 1460 |
} |
| 1382 | 1461 |
} |
| 1383 | 1462 |
return true; |
| 1384 | 1463 |
} |
| 1385 | 1464 |
|
| 1386 | 1465 |
namespace _connectivity_bits {
|
| 1387 | 1466 |
|
| 1388 | 1467 |
template <typename Digraph> |
| 1389 | 1468 |
class BipartiteVisitor : public BfsVisitor<Digraph> {
|
| 1390 | 1469 |
public: |
| 1391 | 1470 |
typedef typename Digraph::Arc Arc; |
| 1392 | 1471 |
typedef typename Digraph::Node Node; |
| 1393 | 1472 |
|
| 1394 | 1473 |
BipartiteVisitor(const Digraph& graph, bool& bipartite) |
| 1395 | 1474 |
: _graph(graph), _part(graph), _bipartite(bipartite) {}
|
| 1396 | 1475 |
|
| 1397 | 1476 |
void start(const Node& node) {
|
| 1398 | 1477 |
_part[node] = true; |
| 1399 | 1478 |
} |
| 1400 | 1479 |
void discover(const Arc& edge) {
|
| 1401 | 1480 |
_part.set(_graph.target(edge), !_part[_graph.source(edge)]); |
| 1402 | 1481 |
} |
| 1403 | 1482 |
void examine(const Arc& edge) {
|
| 1404 | 1483 |
_bipartite = _bipartite && |
| 1405 | 1484 |
_part[_graph.target(edge)] != _part[_graph.source(edge)]; |
| 1406 | 1485 |
} |
| 1407 | 1486 |
|
| 1408 | 1487 |
private: |
| 1409 | 1488 |
|
| 1410 | 1489 |
const Digraph& _graph; |
| 1411 | 1490 |
typename Digraph::template NodeMap<bool> _part; |
| 1412 | 1491 |
bool& _bipartite; |
| 1413 | 1492 |
}; |
| 1414 | 1493 |
|
| 1415 | 1494 |
template <typename Digraph, typename PartMap> |
| 1416 | 1495 |
class BipartitePartitionsVisitor : public BfsVisitor<Digraph> {
|
| 1417 | 1496 |
public: |
| 1418 | 1497 |
typedef typename Digraph::Arc Arc; |
| 1419 | 1498 |
typedef typename Digraph::Node Node; |
| 1420 | 1499 |
|
| 1421 | 1500 |
BipartitePartitionsVisitor(const Digraph& graph, |
| 1422 | 1501 |
PartMap& part, bool& bipartite) |
| 1423 | 1502 |
: _graph(graph), _part(part), _bipartite(bipartite) {}
|
| 1424 | 1503 |
|
| 1425 | 1504 |
void start(const Node& node) {
|
| 1426 | 1505 |
_part.set(node, true); |
| 1427 | 1506 |
} |
| 1428 | 1507 |
void discover(const Arc& edge) {
|
| 1429 | 1508 |
_part.set(_graph.target(edge), !_part[_graph.source(edge)]); |
| 1430 | 1509 |
} |
| 1431 | 1510 |
void examine(const Arc& edge) {
|
| 1432 | 1511 |
_bipartite = _bipartite && |
| 1433 | 1512 |
_part[_graph.target(edge)] != _part[_graph.source(edge)]; |
| 1434 | 1513 |
} |
| 1435 | 1514 |
|
| 1436 | 1515 |
private: |
| 1437 | 1516 |
|
| 1438 | 1517 |
const Digraph& _graph; |
| 1439 | 1518 |
PartMap& _part; |
| 1440 | 1519 |
bool& _bipartite; |
| 1441 | 1520 |
}; |
| 1442 | 1521 |
} |
| 1443 | 1522 |
|
| 1444 |
/// \ingroup |
|
| 1523 |
/// \ingroup graph_properties |
|
| 1445 | 1524 |
/// |
| 1446 |
/// \brief Check |
|
| 1525 |
/// \brief Check whether an undirected graph is bipartite. |
|
| 1447 | 1526 |
/// |
| 1448 |
/// The function checks if the given undirected \c graph graph is bipartite |
|
| 1449 |
/// or not. The \ref Bfs algorithm is used to calculate the result. |
|
| 1450 |
/// \param graph The undirected graph. |
|
| 1451 |
/// \return %True if \c graph is bipartite, %false otherwise. |
|
| 1452 |
/// |
|
| 1527 |
/// The function checks whether the given undirected graph is bipartite. |
|
| 1528 |
/// \return \c true if the graph is bipartite. |
|
| 1529 |
/// |
|
| 1530 |
/// \see bipartitePartitions() |
|
| 1453 | 1531 |
template<typename Graph> |
| 1454 |
|
|
| 1532 |
bool bipartite(const Graph &graph){
|
|
| 1455 | 1533 |
using namespace _connectivity_bits; |
| 1456 | 1534 |
|
| 1457 | 1535 |
checkConcept<concepts::Graph, Graph>(); |
| 1458 | 1536 |
|
| 1459 | 1537 |
typedef typename Graph::NodeIt NodeIt; |
| 1460 | 1538 |
typedef typename Graph::ArcIt ArcIt; |
| 1461 | 1539 |
|
| 1462 | 1540 |
bool bipartite = true; |
| 1463 | 1541 |
|
| 1464 | 1542 |
BipartiteVisitor<Graph> |
| 1465 | 1543 |
visitor(graph, bipartite); |
| 1466 | 1544 |
BfsVisit<Graph, BipartiteVisitor<Graph> > |
| 1467 | 1545 |
bfs(graph, visitor); |
| 1468 | 1546 |
bfs.init(); |
| 1469 | 1547 |
for(NodeIt it(graph); it != INVALID; ++it) {
|
| 1470 | 1548 |
if(!bfs.reached(it)){
|
| 1471 | 1549 |
bfs.addSource(it); |
| 1472 | 1550 |
while (!bfs.emptyQueue()) {
|
| 1473 | 1551 |
bfs.processNextNode(); |
| 1474 | 1552 |
if (!bipartite) return false; |
| 1475 | 1553 |
} |
| 1476 | 1554 |
} |
| 1477 | 1555 |
} |
| 1478 | 1556 |
return true; |
| 1479 | 1557 |
} |
| 1480 | 1558 |
|
| 1481 |
/// \ingroup |
|
| 1559 |
/// \ingroup graph_properties |
|
| 1482 | 1560 |
/// |
| 1483 |
/// \brief |
|
| 1561 |
/// \brief Find the bipartite partitions of an undirected graph. |
|
| 1484 | 1562 |
/// |
| 1485 |
/// The function checks if the given undirected graph is bipartite |
|
| 1486 |
/// or not. The \ref Bfs algorithm is used to calculate the result. |
|
| 1487 |
/// During the execution, the \c partMap will be set as the two |
|
| 1488 |
/// partitions of the graph. |
|
| 1563 |
/// This function checks whether the given undirected graph is bipartite |
|
| 1564 |
/// and gives back the bipartite partitions. |
|
| 1565 |
/// |
|
| 1566 |
/// \image html bipartite_partitions.png |
|
| 1567 |
/// \image latex bipartite_partitions.eps "Bipartite partititions" width=\textwidth |
|
| 1568 |
/// |
|
| 1489 | 1569 |
/// \param graph The undirected graph. |
| 1490 |
/// \retval partMap A writable bool map of nodes. It will be set as the |
|
| 1491 |
/// two partitions of the graph. |
|
| 1492 |
/// \ |
|
| 1570 |
/// \retval partMap A writable node map of \c bool (or convertible) value |
|
| 1571 |
/// type. The values will be set to \c true for one component and |
|
| 1572 |
/// \c false for the other one. |
|
| 1573 |
/// \return \c true if the graph is bipartite, \c false otherwise. |
|
| 1574 |
/// |
|
| 1575 |
/// \see bipartite() |
|
| 1493 | 1576 |
template<typename Graph, typename NodeMap> |
| 1494 |
|
|
| 1577 |
bool bipartitePartitions(const Graph &graph, NodeMap &partMap){
|
|
| 1495 | 1578 |
using namespace _connectivity_bits; |
| 1496 | 1579 |
|
| 1497 | 1580 |
checkConcept<concepts::Graph, Graph>(); |
| 1581 |
checkConcept<concepts::WriteMap<typename Graph::Node, bool>, NodeMap>(); |
|
| 1498 | 1582 |
|
| 1499 | 1583 |
typedef typename Graph::Node Node; |
| 1500 | 1584 |
typedef typename Graph::NodeIt NodeIt; |
| 1501 | 1585 |
typedef typename Graph::ArcIt ArcIt; |
| 1502 | 1586 |
|
| 1503 | 1587 |
bool bipartite = true; |
| 1504 | 1588 |
|
| 1505 | 1589 |
BipartitePartitionsVisitor<Graph, NodeMap> |
| 1506 | 1590 |
visitor(graph, partMap, bipartite); |
| 1507 | 1591 |
BfsVisit<Graph, BipartitePartitionsVisitor<Graph, NodeMap> > |
| 1508 | 1592 |
bfs(graph, visitor); |
| 1509 | 1593 |
bfs.init(); |
| 1510 | 1594 |
for(NodeIt it(graph); it != INVALID; ++it) {
|
| 1511 | 1595 |
if(!bfs.reached(it)){
|
| 1512 | 1596 |
bfs.addSource(it); |
| 1513 | 1597 |
while (!bfs.emptyQueue()) {
|
| 1514 | 1598 |
bfs.processNextNode(); |
| 1515 | 1599 |
if (!bipartite) return false; |
| 1516 | 1600 |
} |
| 1517 | 1601 |
} |
| 1518 | 1602 |
} |
| 1519 | 1603 |
return true; |
| 1520 | 1604 |
} |
| 1521 | 1605 |
|
| 1522 |
/// \ |
|
| 1606 |
/// \ingroup graph_properties |
|
| 1523 | 1607 |
/// |
| 1524 |
/// Returns true when there are not loop edges in the graph. |
|
| 1525 |
template <typename Digraph> |
|
| 1526 |
bool loopFree(const Digraph& digraph) {
|
|
| 1527 |
for (typename Digraph::ArcIt it(digraph); it != INVALID; ++it) {
|
|
| 1528 |
|
|
| 1608 |
/// \brief Check whether the given graph contains no loop arcs/edges. |
|
| 1609 |
/// |
|
| 1610 |
/// This function returns \c true if there are no loop arcs/edges in |
|
| 1611 |
/// the given graph. It works for both directed and undirected graphs. |
|
| 1612 |
template <typename Graph> |
|
| 1613 |
bool loopFree(const Graph& graph) {
|
|
| 1614 |
for (typename Graph::ArcIt it(graph); it != INVALID; ++it) {
|
|
| 1615 |
if (graph.source(it) == graph.target(it)) return false; |
|
| 1529 | 1616 |
} |
| 1530 | 1617 |
return true; |
| 1531 | 1618 |
} |
| 1532 | 1619 |
|
| 1533 |
/// \ |
|
| 1620 |
/// \ingroup graph_properties |
|
| 1534 | 1621 |
/// |
| 1535 |
/// Returns true when there are not parallel edges in the graph. |
|
| 1536 |
template <typename Digraph> |
|
| 1537 |
bool parallelFree(const Digraph& digraph) {
|
|
| 1538 |
typename Digraph::template NodeMap<bool> reached(digraph, false); |
|
| 1539 |
for (typename Digraph::NodeIt n(digraph); n != INVALID; ++n) {
|
|
| 1540 |
for (typename Digraph::OutArcIt a(digraph, n); a != INVALID; ++a) {
|
|
| 1541 |
if (reached[digraph.target(a)]) return false; |
|
| 1542 |
reached.set(digraph.target(a), true); |
|
| 1622 |
/// \brief Check whether the given graph contains no parallel arcs/edges. |
|
| 1623 |
/// |
|
| 1624 |
/// This function returns \c true if there are no parallel arcs/edges in |
|
| 1625 |
/// the given graph. It works for both directed and undirected graphs. |
|
| 1626 |
template <typename Graph> |
|
| 1627 |
bool parallelFree(const Graph& graph) {
|
|
| 1628 |
typename Graph::template NodeMap<int> reached(graph, 0); |
|
| 1629 |
int cnt = 1; |
|
| 1630 |
for (typename Graph::NodeIt n(graph); n != INVALID; ++n) {
|
|
| 1631 |
for (typename Graph::OutArcIt a(graph, n); a != INVALID; ++a) {
|
|
| 1632 |
if (reached[graph.target(a)] == cnt) return false; |
|
| 1633 |
reached[graph.target(a)] = cnt; |
|
| 1543 | 1634 |
} |
| 1544 |
for (typename Digraph::OutArcIt a(digraph, n); a != INVALID; ++a) {
|
|
| 1545 |
reached.set(digraph.target(a), false); |
|
| 1546 |
|
|
| 1635 |
++cnt; |
|
| 1547 | 1636 |
} |
| 1548 | 1637 |
return true; |
| 1549 | 1638 |
} |
| 1550 | 1639 |
|
| 1551 |
/// \brief Returns true when there are not loop edges and parallel |
|
| 1552 |
/// edges in the graph. |
|
| 1640 |
/// \ingroup graph_properties |
|
| 1553 | 1641 |
/// |
| 1554 |
/// Returns true when there are not loop edges and parallel edges in |
|
| 1555 |
/// the graph. |
|
| 1556 |
template <typename Digraph> |
|
| 1557 |
bool simpleDigraph(const Digraph& digraph) {
|
|
| 1558 |
typename Digraph::template NodeMap<bool> reached(digraph, false); |
|
| 1559 |
for (typename Digraph::NodeIt n(digraph); n != INVALID; ++n) {
|
|
| 1560 |
reached.set(n, true); |
|
| 1561 |
for (typename Digraph::OutArcIt a(digraph, n); a != INVALID; ++a) {
|
|
| 1562 |
if (reached[digraph.target(a)]) return false; |
|
| 1563 |
reached.set(digraph.target(a), true); |
|
| 1642 |
/// \brief Check whether the given graph is simple. |
|
| 1643 |
/// |
|
| 1644 |
/// This function returns \c true if the given graph is simple, i.e. |
|
| 1645 |
/// it contains no loop arcs/edges and no parallel arcs/edges. |
|
| 1646 |
/// The function works for both directed and undirected graphs. |
|
| 1647 |
/// \see loopFree(), parallelFree() |
|
| 1648 |
template <typename Graph> |
|
| 1649 |
bool simpleGraph(const Graph& graph) {
|
|
| 1650 |
typename Graph::template NodeMap<int> reached(graph, 0); |
|
| 1651 |
int cnt = 1; |
|
| 1652 |
for (typename Graph::NodeIt n(graph); n != INVALID; ++n) {
|
|
| 1653 |
reached[n] = cnt; |
|
| 1654 |
for (typename Graph::OutArcIt a(graph, n); a != INVALID; ++a) {
|
|
| 1655 |
if (reached[graph.target(a)] == cnt) return false; |
|
| 1656 |
reached[graph.target(a)] = cnt; |
|
| 1564 | 1657 |
} |
| 1565 |
for (typename Digraph::OutArcIt a(digraph, n); a != INVALID; ++a) {
|
|
| 1566 |
reached.set(digraph.target(a), false); |
|
| 1567 |
} |
|
| 1568 |
reached.set(n, false); |
|
| 1658 |
++cnt; |
|
| 1569 | 1659 |
} |
| 1570 | 1660 |
return true; |
| 1571 | 1661 |
} |
| 1572 | 1662 |
|
| 1573 | 1663 |
} //namespace lemon |
| 1574 | 1664 |
|
| 1575 | 1665 |
#endif //LEMON_CONNECTIVITY_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_CORE_H |
| 20 | 20 |
#define LEMON_CORE_H |
| 21 | 21 |
|
| 22 | 22 |
#include <vector> |
| 23 | 23 |
#include <algorithm> |
| 24 | 24 |
|
| 25 |
#include <lemon/config.h> |
|
| 25 | 26 |
#include <lemon/bits/enable_if.h> |
| 26 | 27 |
#include <lemon/bits/traits.h> |
| 27 | 28 |
#include <lemon/assert.h> |
| 28 | 29 |
|
| 30 |
// Disable the following warnings when compiling with MSVC: |
|
| 31 |
// C4250: 'class1' : inherits 'class2::member' via dominance |
|
| 32 |
// C4355: 'this' : used in base member initializer list |
|
| 33 |
// C4503: 'function' : decorated name length exceeded, name was truncated |
|
| 34 |
// C4800: 'type' : forcing value to bool 'true' or 'false' (performance warning) |
|
| 35 |
// C4996: 'function': was declared deprecated |
|
| 36 |
#ifdef _MSC_VER |
|
| 37 |
#pragma warning( disable : 4250 4355 4503 4800 4996 ) |
|
| 38 |
#endif |
|
| 39 |
|
|
| 29 | 40 |
///\file |
| 30 | 41 |
///\brief LEMON core utilities. |
| 31 | 42 |
/// |
| 32 | 43 |
///This header file contains core utilities for LEMON. |
| 33 | 44 |
///It is automatically included by all graph types, therefore it usually |
| 34 | 45 |
///do not have to be included directly. |
| 35 | 46 |
|
| 36 | 47 |
namespace lemon {
|
| 37 | 48 |
|
| 38 | 49 |
/// \brief Dummy type to make it easier to create invalid iterators. |
| 39 | 50 |
/// |
| 40 | 51 |
/// Dummy type to make it easier to create invalid iterators. |
| 41 | 52 |
/// See \ref INVALID for the usage. |
| 42 | 53 |
struct Invalid {
|
| 43 | 54 |
public: |
| 44 | 55 |
bool operator==(Invalid) { return true; }
|
| 45 | 56 |
bool operator!=(Invalid) { return false; }
|
| 46 | 57 |
bool operator< (Invalid) { return false; }
|
| 47 | 58 |
}; |
| 48 | 59 |
|
| 49 | 60 |
/// \brief Invalid iterators. |
| 50 | 61 |
/// |
| 51 | 62 |
/// \ref Invalid is a global type that converts to each iterator |
| 52 | 63 |
/// in such a way that the value of the target iterator will be invalid. |
| 53 | 64 |
#ifdef LEMON_ONLY_TEMPLATES |
| 54 | 65 |
const Invalid INVALID = Invalid(); |
| 55 | 66 |
#else |
| 56 | 67 |
extern const Invalid INVALID; |
| 57 | 68 |
#endif |
| 58 | 69 |
|
| 59 | 70 |
/// \addtogroup gutils |
| 60 | 71 |
/// @{
|
| 61 | 72 |
|
| 62 | 73 |
///Create convenience typedefs for the digraph types and iterators |
| 63 | 74 |
|
| 64 | 75 |
///This \c \#define creates convenient type definitions for the following |
| 65 | 76 |
///types of \c Digraph: \c Node, \c NodeIt, \c Arc, \c ArcIt, \c InArcIt, |
| 66 | 77 |
///\c OutArcIt, \c BoolNodeMap, \c IntNodeMap, \c DoubleNodeMap, |
| 67 | 78 |
///\c BoolArcMap, \c IntArcMap, \c DoubleArcMap. |
| 68 | 79 |
/// |
| 69 | 80 |
///\note If the graph type is a dependent type, ie. the graph type depend |
| 70 | 81 |
///on a template parameter, then use \c TEMPLATE_DIGRAPH_TYPEDEFS() |
| 71 | 82 |
///macro. |
| 72 | 83 |
#define DIGRAPH_TYPEDEFS(Digraph) \ |
| 73 | 84 |
typedef Digraph::Node Node; \ |
| 74 | 85 |
typedef Digraph::NodeIt NodeIt; \ |
| 75 | 86 |
typedef Digraph::Arc Arc; \ |
| 76 | 87 |
typedef Digraph::ArcIt ArcIt; \ |
| 77 | 88 |
typedef Digraph::InArcIt InArcIt; \ |
| 78 | 89 |
typedef Digraph::OutArcIt OutArcIt; \ |
| 79 | 90 |
typedef Digraph::NodeMap<bool> BoolNodeMap; \ |
| 80 | 91 |
typedef Digraph::NodeMap<int> IntNodeMap; \ |
| 81 | 92 |
typedef Digraph::NodeMap<double> DoubleNodeMap; \ |
| 82 | 93 |
typedef Digraph::ArcMap<bool> BoolArcMap; \ |
| 83 | 94 |
typedef Digraph::ArcMap<int> IntArcMap; \ |
| 84 | 95 |
typedef Digraph::ArcMap<double> DoubleArcMap |
| 85 | 96 |
|
| 86 | 97 |
///Create convenience typedefs for the digraph types and iterators |
| 87 | 98 |
|
| 88 | 99 |
///\see DIGRAPH_TYPEDEFS |
| 89 | 100 |
/// |
| 90 | 101 |
///\note Use this macro, if the graph type is a dependent type, |
| 91 | 102 |
///ie. the graph type depend on a template parameter. |
| 92 | 103 |
#define TEMPLATE_DIGRAPH_TYPEDEFS(Digraph) \ |
| 93 | 104 |
typedef typename Digraph::Node Node; \ |
| 94 | 105 |
typedef typename Digraph::NodeIt NodeIt; \ |
| 95 | 106 |
typedef typename Digraph::Arc Arc; \ |
| 96 | 107 |
typedef typename Digraph::ArcIt ArcIt; \ |
| 97 | 108 |
typedef typename Digraph::InArcIt InArcIt; \ |
| 98 | 109 |
typedef typename Digraph::OutArcIt OutArcIt; \ |
| 99 | 110 |
typedef typename Digraph::template NodeMap<bool> BoolNodeMap; \ |
| 100 | 111 |
typedef typename Digraph::template NodeMap<int> IntNodeMap; \ |
| 101 | 112 |
typedef typename Digraph::template NodeMap<double> DoubleNodeMap; \ |
| 102 | 113 |
typedef typename Digraph::template ArcMap<bool> BoolArcMap; \ |
| 103 | 114 |
typedef typename Digraph::template ArcMap<int> IntArcMap; \ |
| 104 | 115 |
typedef typename Digraph::template ArcMap<double> DoubleArcMap |
| 105 | 116 |
|
| 106 | 117 |
///Create convenience typedefs for the graph types and iterators |
| 107 | 118 |
|
| 108 | 119 |
///This \c \#define creates the same convenient type definitions as defined |
| 109 | 120 |
///by \ref DIGRAPH_TYPEDEFS(Graph) and six more, namely it creates |
| 110 | 121 |
///\c Edge, \c EdgeIt, \c IncEdgeIt, \c BoolEdgeMap, \c IntEdgeMap, |
| 111 | 122 |
///\c DoubleEdgeMap. |
| 112 | 123 |
/// |
| 113 | 124 |
///\note If the graph type is a dependent type, ie. the graph type depend |
| 114 | 125 |
///on a template parameter, then use \c TEMPLATE_GRAPH_TYPEDEFS() |
| 115 | 126 |
///macro. |
| 116 | 127 |
#define GRAPH_TYPEDEFS(Graph) \ |
| 117 | 128 |
DIGRAPH_TYPEDEFS(Graph); \ |
| 118 | 129 |
typedef Graph::Edge Edge; \ |
| 119 | 130 |
typedef Graph::EdgeIt EdgeIt; \ |
| 120 | 131 |
typedef Graph::IncEdgeIt IncEdgeIt; \ |
| 121 | 132 |
typedef Graph::EdgeMap<bool> BoolEdgeMap; \ |
| 122 | 133 |
typedef Graph::EdgeMap<int> IntEdgeMap; \ |
| 123 | 134 |
typedef Graph::EdgeMap<double> DoubleEdgeMap |
| 124 | 135 |
|
| 125 | 136 |
///Create convenience typedefs for the graph types and iterators |
| 126 | 137 |
|
| 127 | 138 |
///\see GRAPH_TYPEDEFS |
| 128 | 139 |
/// |
| 129 | 140 |
///\note Use this macro, if the graph type is a dependent type, |
| 130 | 141 |
///ie. the graph type depend on a template parameter. |
| 131 | 142 |
#define TEMPLATE_GRAPH_TYPEDEFS(Graph) \ |
| 132 | 143 |
TEMPLATE_DIGRAPH_TYPEDEFS(Graph); \ |
| 133 | 144 |
typedef typename Graph::Edge Edge; \ |
| 134 | 145 |
typedef typename Graph::EdgeIt EdgeIt; \ |
| 135 | 146 |
typedef typename Graph::IncEdgeIt IncEdgeIt; \ |
| 136 | 147 |
typedef typename Graph::template EdgeMap<bool> BoolEdgeMap; \ |
| 137 | 148 |
typedef typename Graph::template EdgeMap<int> IntEdgeMap; \ |
| 138 | 149 |
typedef typename Graph::template EdgeMap<double> DoubleEdgeMap |
| 139 | 150 |
|
| 140 | 151 |
/// \brief Function to count the items in a graph. |
| 141 | 152 |
/// |
| 142 | 153 |
/// This function counts the items (nodes, arcs etc.) in a graph. |
| 143 | 154 |
/// The complexity of the function is linear because |
| 144 | 155 |
/// it iterates on all of the items. |
| 145 | 156 |
template <typename Graph, typename Item> |
| 146 | 157 |
inline int countItems(const Graph& g) {
|
| 147 | 158 |
typedef typename ItemSetTraits<Graph, Item>::ItemIt ItemIt; |
| 148 | 159 |
int num = 0; |
| 149 | 160 |
for (ItemIt it(g); it != INVALID; ++it) {
|
| 150 | 161 |
++num; |
| 151 | 162 |
} |
| 152 | 163 |
return num; |
| 153 | 164 |
} |
| 154 | 165 |
|
| 155 | 166 |
// Node counting: |
| 156 | 167 |
|
| 157 | 168 |
namespace _core_bits {
|
| 158 | 169 |
|
| 159 | 170 |
template <typename Graph, typename Enable = void> |
| 160 | 171 |
struct CountNodesSelector {
|
| 161 | 172 |
static int count(const Graph &g) {
|
| 162 | 173 |
return countItems<Graph, typename Graph::Node>(g); |
| 163 | 174 |
} |
| 164 | 175 |
}; |
| 165 | 176 |
|
| 166 | 177 |
template <typename Graph> |
| 167 | 178 |
struct CountNodesSelector< |
| 168 | 179 |
Graph, typename |
| 169 | 180 |
enable_if<typename Graph::NodeNumTag, void>::type> |
| 170 | 181 |
{
|
| 171 | 182 |
static int count(const Graph &g) {
|
| 172 | 183 |
return g.nodeNum(); |
| 173 | 184 |
} |
| 174 | 185 |
}; |
| 175 | 186 |
} |
| 176 | 187 |
|
| 177 | 188 |
/// \brief Function to count the nodes in the graph. |
| 178 | 189 |
/// |
| 179 | 190 |
/// This function counts the nodes in the graph. |
| 180 | 191 |
/// The complexity of the function is <em>O</em>(<em>n</em>), but for some |
| 181 | 192 |
/// graph structures it is specialized to run in <em>O</em>(1). |
| 182 | 193 |
/// |
| 183 | 194 |
/// \note If the graph contains a \c nodeNum() member function and a |
| 184 | 195 |
/// \c NodeNumTag tag then this function calls directly the member |
| 185 | 196 |
/// function to query the cardinality of the node set. |
| 186 | 197 |
template <typename Graph> |
| 187 | 198 |
inline int countNodes(const Graph& g) {
|
| 188 | 199 |
return _core_bits::CountNodesSelector<Graph>::count(g); |
| 189 | 200 |
} |
| 190 | 201 |
|
| 191 | 202 |
// Arc counting: |
| 192 | 203 |
|
| 193 | 204 |
namespace _core_bits {
|
| 194 | 205 |
|
| 195 | 206 |
template <typename Graph, typename Enable = void> |
| 196 | 207 |
struct CountArcsSelector {
|
| 197 | 208 |
static int count(const Graph &g) {
|
| 198 | 209 |
return countItems<Graph, typename Graph::Arc>(g); |
| 199 | 210 |
} |
| 200 | 211 |
}; |
| 201 | 212 |
|
| 202 | 213 |
template <typename Graph> |
| 203 | 214 |
struct CountArcsSelector< |
| 204 | 215 |
Graph, |
| 205 | 216 |
typename enable_if<typename Graph::ArcNumTag, void>::type> |
| 206 | 217 |
{
|
| 207 | 218 |
static int count(const Graph &g) {
|
| 208 | 219 |
return g.arcNum(); |
| 209 | 220 |
} |
| 210 | 221 |
}; |
| 211 | 222 |
} |
| 212 | 223 |
|
| 213 | 224 |
/// \brief Function to count the arcs in the graph. |
| 214 | 225 |
/// |
| 215 | 226 |
/// This function counts the arcs in the graph. |
| 216 | 227 |
/// The complexity of the function is <em>O</em>(<em>m</em>), but for some |
| 217 | 228 |
/// graph structures it is specialized to run in <em>O</em>(1). |
| 218 | 229 |
/// |
| 219 | 230 |
/// \note If the graph contains a \c arcNum() member function and a |
| 220 | 231 |
/// \c ArcNumTag tag then this function calls directly the member |
| 221 | 232 |
/// function to query the cardinality of the arc set. |
| 222 | 233 |
template <typename Graph> |
| 223 | 234 |
inline int countArcs(const Graph& g) {
|
| 224 | 235 |
return _core_bits::CountArcsSelector<Graph>::count(g); |
| 225 | 236 |
} |
| 226 | 237 |
|
| 227 | 238 |
// Edge counting: |
| 228 | 239 |
|
| 229 | 240 |
namespace _core_bits {
|
| 230 | 241 |
|
| 231 | 242 |
template <typename Graph, typename Enable = void> |
| 232 | 243 |
struct CountEdgesSelector {
|
| 233 | 244 |
static int count(const Graph &g) {
|
| 234 | 245 |
return countItems<Graph, typename Graph::Edge>(g); |
| 235 | 246 |
} |
| 236 | 247 |
}; |
| 237 | 248 |
|
| 238 | 249 |
template <typename Graph> |
| 239 | 250 |
struct CountEdgesSelector< |
| 240 | 251 |
Graph, |
| 241 | 252 |
typename enable_if<typename Graph::EdgeNumTag, void>::type> |
| 242 | 253 |
{
|
| 243 | 254 |
static int count(const Graph &g) {
|
| 244 | 255 |
return g.edgeNum(); |
| 245 | 256 |
} |
| 246 | 257 |
}; |
| 247 | 258 |
} |
| 248 | 259 |
|
| 249 | 260 |
/// \brief Function to count the edges in the graph. |
| 250 | 261 |
/// |
| 251 | 262 |
/// This function counts the edges in the graph. |
| 252 | 263 |
/// The complexity of the function is <em>O</em>(<em>m</em>), but for some |
| 253 | 264 |
/// graph structures it is specialized to run in <em>O</em>(1). |
| 254 | 265 |
/// |
| 255 | 266 |
/// \note If the graph contains a \c edgeNum() member function and a |
| 256 | 267 |
/// \c EdgeNumTag tag then this function calls directly the member |
| 257 | 268 |
/// function to query the cardinality of the edge set. |
| 258 | 269 |
template <typename Graph> |
| 259 | 270 |
inline int countEdges(const Graph& g) {
|
| 260 | 271 |
return _core_bits::CountEdgesSelector<Graph>::count(g); |
| 261 | 272 |
|
| 262 | 273 |
} |
| 263 | 274 |
|
| 264 | 275 |
|
| 265 | 276 |
template <typename Graph, typename DegIt> |
| 266 | 277 |
inline int countNodeDegree(const Graph& _g, const typename Graph::Node& _n) {
|
| 267 | 278 |
int num = 0; |
| 268 | 279 |
for (DegIt it(_g, _n); it != INVALID; ++it) {
|
| 269 | 280 |
++num; |
| 270 | 281 |
} |
| 271 | 282 |
return num; |
| 272 | 283 |
} |
| 273 | 284 |
|
| 274 | 285 |
/// \brief Function to count the number of the out-arcs from node \c n. |
| 275 | 286 |
/// |
| 276 | 287 |
/// This function counts the number of the out-arcs from node \c n |
| 277 | 288 |
/// in the graph \c g. |
| 278 | 289 |
template <typename Graph> |
| 279 | 290 |
inline int countOutArcs(const Graph& g, const typename Graph::Node& n) {
|
| 280 | 291 |
return countNodeDegree<Graph, typename Graph::OutArcIt>(g, n); |
| 281 | 292 |
} |
| 282 | 293 |
|
| 283 | 294 |
/// \brief Function to count the number of the in-arcs to node \c n. |
| 284 | 295 |
/// |
| 285 | 296 |
/// This function counts the number of the in-arcs to node \c n |
| 286 | 297 |
/// in the graph \c g. |
| 287 | 298 |
template <typename Graph> |
| 288 | 299 |
inline int countInArcs(const Graph& g, const typename Graph::Node& n) {
|
| 289 | 300 |
return countNodeDegree<Graph, typename Graph::InArcIt>(g, n); |
| 290 | 301 |
} |
| 291 | 302 |
|
| 292 | 303 |
/// \brief Function to count the number of the inc-edges to node \c n. |
| 293 | 304 |
/// |
| 294 | 305 |
/// This function counts the number of the inc-edges to node \c n |
| 295 | 306 |
/// in the undirected graph \c g. |
| 296 | 307 |
template <typename Graph> |
| 297 | 308 |
inline int countIncEdges(const Graph& g, const typename Graph::Node& n) {
|
| 298 | 309 |
return countNodeDegree<Graph, typename Graph::IncEdgeIt>(g, n); |
| 299 | 310 |
} |
| 300 | 311 |
|
| 301 | 312 |
namespace _core_bits {
|
| 302 | 313 |
|
| 303 | 314 |
template <typename Digraph, typename Item, typename RefMap> |
| 304 | 315 |
class MapCopyBase {
|
| 305 | 316 |
public: |
| 306 | 317 |
virtual void copy(const Digraph& from, const RefMap& refMap) = 0; |
| 307 | 318 |
|
| 308 | 319 |
virtual ~MapCopyBase() {}
|
| 309 | 320 |
}; |
| 310 | 321 |
|
| 311 | 322 |
template <typename Digraph, typename Item, typename RefMap, |
| 312 | 323 |
typename FromMap, typename ToMap> |
| 313 | 324 |
class MapCopy : public MapCopyBase<Digraph, Item, RefMap> {
|
| 314 | 325 |
public: |
| 315 | 326 |
|
| 316 | 327 |
MapCopy(const FromMap& map, ToMap& tmap) |
| 317 | 328 |
: _map(map), _tmap(tmap) {}
|
| 318 | 329 |
|
| 319 | 330 |
virtual void copy(const Digraph& digraph, const RefMap& refMap) {
|
| 320 | 331 |
typedef typename ItemSetTraits<Digraph, Item>::ItemIt ItemIt; |
| 321 | 332 |
for (ItemIt it(digraph); it != INVALID; ++it) {
|
| 322 | 333 |
_tmap.set(refMap[it], _map[it]); |
| 323 | 334 |
} |
| 324 | 335 |
} |
| 325 | 336 |
|
| 326 | 337 |
private: |
| 327 | 338 |
const FromMap& _map; |
| 328 | 339 |
ToMap& _tmap; |
| 329 | 340 |
}; |
| 330 | 341 |
|
| 331 | 342 |
template <typename Digraph, typename Item, typename RefMap, typename It> |
| 332 | 343 |
class ItemCopy : public MapCopyBase<Digraph, Item, RefMap> {
|
| 333 | 344 |
public: |
| 334 | 345 |
|
| 335 | 346 |
ItemCopy(const Item& item, It& it) : _item(item), _it(it) {}
|
| 336 | 347 |
|
| 337 | 348 |
virtual void copy(const Digraph&, const RefMap& refMap) {
|
| 338 | 349 |
_it = refMap[_item]; |
| 339 | 350 |
} |
| 340 | 351 |
|
| 341 | 352 |
private: |
| 342 | 353 |
Item _item; |
| 343 | 354 |
It& _it; |
| 344 | 355 |
}; |
| 345 | 356 |
|
| 346 | 357 |
template <typename Digraph, typename Item, typename RefMap, typename Ref> |
| 347 | 358 |
class RefCopy : public MapCopyBase<Digraph, Item, RefMap> {
|
| 348 | 359 |
public: |
| 349 | 360 |
|
| 350 | 361 |
RefCopy(Ref& map) : _map(map) {}
|
| 351 | 362 |
|
| 352 | 363 |
virtual void copy(const Digraph& digraph, const RefMap& refMap) {
|
| 353 | 364 |
typedef typename ItemSetTraits<Digraph, Item>::ItemIt ItemIt; |
| 354 | 365 |
for (ItemIt it(digraph); it != INVALID; ++it) {
|
| 355 | 366 |
_map.set(it, refMap[it]); |
| 356 | 367 |
} |
| 357 | 368 |
} |
| 358 | 369 |
|
| 359 | 370 |
private: |
| 360 | 371 |
Ref& _map; |
| 361 | 372 |
}; |
| 362 | 373 |
|
| 363 | 374 |
template <typename Digraph, typename Item, typename RefMap, |
| 364 | 375 |
typename CrossRef> |
| 365 | 376 |
class CrossRefCopy : public MapCopyBase<Digraph, Item, RefMap> {
|
| 366 | 377 |
public: |
| 367 | 378 |
|
| 368 | 379 |
CrossRefCopy(CrossRef& cmap) : _cmap(cmap) {}
|
| 369 | 380 |
|
| 370 | 381 |
virtual void copy(const Digraph& digraph, const RefMap& refMap) {
|
| 371 | 382 |
typedef typename ItemSetTraits<Digraph, Item>::ItemIt ItemIt; |
| 372 | 383 |
for (ItemIt it(digraph); it != INVALID; ++it) {
|
| 373 | 384 |
_cmap.set(refMap[it], it); |
| 374 | 385 |
} |
| 375 | 386 |
} |
| 376 | 387 |
|
| 377 | 388 |
private: |
| 378 | 389 |
CrossRef& _cmap; |
| 379 | 390 |
}; |
| 380 | 391 |
|
| 381 | 392 |
template <typename Digraph, typename Enable = void> |
| 382 | 393 |
struct DigraphCopySelector {
|
| 383 | 394 |
template <typename From, typename NodeRefMap, typename ArcRefMap> |
| 384 | 395 |
static void copy(const From& from, Digraph &to, |
| 385 | 396 |
NodeRefMap& nodeRefMap, ArcRefMap& arcRefMap) {
|
| 386 | 397 |
for (typename From::NodeIt it(from); it != INVALID; ++it) {
|
| 387 | 398 |
nodeRefMap[it] = to.addNode(); |
| 388 | 399 |
} |
| 389 | 400 |
for (typename From::ArcIt it(from); it != INVALID; ++it) {
|
| 390 | 401 |
arcRefMap[it] = to.addArc(nodeRefMap[from.source(it)], |
| 391 | 402 |
nodeRefMap[from.target(it)]); |
| 392 | 403 |
} |
| 393 | 404 |
} |
| 394 | 405 |
}; |
| 395 | 406 |
|
| 396 | 407 |
template <typename Digraph> |
| 397 | 408 |
struct DigraphCopySelector< |
| 398 | 409 |
Digraph, |
| 399 | 410 |
typename enable_if<typename Digraph::BuildTag, void>::type> |
| 400 | 411 |
{
|
| 401 | 412 |
template <typename From, typename NodeRefMap, typename ArcRefMap> |
| 402 | 413 |
static void copy(const From& from, Digraph &to, |
| 403 | 414 |
NodeRefMap& nodeRefMap, ArcRefMap& arcRefMap) {
|
| 404 | 415 |
to.build(from, nodeRefMap, arcRefMap); |
| 405 | 416 |
} |
| 406 | 417 |
}; |
| 407 | 418 |
|
| 408 | 419 |
template <typename Graph, typename Enable = void> |
| 409 | 420 |
struct GraphCopySelector {
|
| 410 | 421 |
template <typename From, typename NodeRefMap, typename EdgeRefMap> |
| 411 | 422 |
static void copy(const From& from, Graph &to, |
| 412 | 423 |
NodeRefMap& nodeRefMap, EdgeRefMap& edgeRefMap) {
|
| ... | ... |
@@ -652,1194 +663,1203 @@ |
| 652 | 663 |
template <typename From, typename To> |
| 653 | 664 |
DigraphCopy<From, To> digraphCopy(const From& from, To& to) {
|
| 654 | 665 |
return DigraphCopy<From, To>(from, to); |
| 655 | 666 |
} |
| 656 | 667 |
|
| 657 | 668 |
/// \brief Class to copy a graph. |
| 658 | 669 |
/// |
| 659 | 670 |
/// Class to copy a graph to another graph (duplicate a graph). The |
| 660 | 671 |
/// simplest way of using it is through the \c graphCopy() function. |
| 661 | 672 |
/// |
| 662 | 673 |
/// This class not only make a copy of a graph, but it can create |
| 663 | 674 |
/// references and cross references between the nodes, edges and arcs of |
| 664 | 675 |
/// the two graphs, and it can copy maps for using with the newly created |
| 665 | 676 |
/// graph. |
| 666 | 677 |
/// |
| 667 | 678 |
/// To make a copy from a graph, first an instance of GraphCopy |
| 668 | 679 |
/// should be created, then the data belongs to the graph should |
| 669 | 680 |
/// assigned to copy. In the end, the \c run() member should be |
| 670 | 681 |
/// called. |
| 671 | 682 |
/// |
| 672 | 683 |
/// The next code copies a graph with several data: |
| 673 | 684 |
///\code |
| 674 | 685 |
/// GraphCopy<OrigGraph, NewGraph> cg(orig_graph, new_graph); |
| 675 | 686 |
/// // Create references for the nodes |
| 676 | 687 |
/// OrigGraph::NodeMap<NewGraph::Node> nr(orig_graph); |
| 677 | 688 |
/// cg.nodeRef(nr); |
| 678 | 689 |
/// // Create cross references (inverse) for the edges |
| 679 | 690 |
/// NewGraph::EdgeMap<OrigGraph::Edge> ecr(new_graph); |
| 680 | 691 |
/// cg.edgeCrossRef(ecr); |
| 681 | 692 |
/// // Copy an edge map |
| 682 | 693 |
/// OrigGraph::EdgeMap<double> oemap(orig_graph); |
| 683 | 694 |
/// NewGraph::EdgeMap<double> nemap(new_graph); |
| 684 | 695 |
/// cg.edgeMap(oemap, nemap); |
| 685 | 696 |
/// // Copy a node |
| 686 | 697 |
/// OrigGraph::Node on; |
| 687 | 698 |
/// NewGraph::Node nn; |
| 688 | 699 |
/// cg.node(on, nn); |
| 689 | 700 |
/// // Execute copying |
| 690 | 701 |
/// cg.run(); |
| 691 | 702 |
///\endcode |
| 692 | 703 |
template <typename From, typename To> |
| 693 | 704 |
class GraphCopy {
|
| 694 | 705 |
private: |
| 695 | 706 |
|
| 696 | 707 |
typedef typename From::Node Node; |
| 697 | 708 |
typedef typename From::NodeIt NodeIt; |
| 698 | 709 |
typedef typename From::Arc Arc; |
| 699 | 710 |
typedef typename From::ArcIt ArcIt; |
| 700 | 711 |
typedef typename From::Edge Edge; |
| 701 | 712 |
typedef typename From::EdgeIt EdgeIt; |
| 702 | 713 |
|
| 703 | 714 |
typedef typename To::Node TNode; |
| 704 | 715 |
typedef typename To::Arc TArc; |
| 705 | 716 |
typedef typename To::Edge TEdge; |
| 706 | 717 |
|
| 707 | 718 |
typedef typename From::template NodeMap<TNode> NodeRefMap; |
| 708 | 719 |
typedef typename From::template EdgeMap<TEdge> EdgeRefMap; |
| 709 | 720 |
|
| 710 | 721 |
struct ArcRefMap {
|
| 711 | 722 |
ArcRefMap(const From& from, const To& to, |
| 712 | 723 |
const EdgeRefMap& edge_ref, const NodeRefMap& node_ref) |
| 713 | 724 |
: _from(from), _to(to), |
| 714 | 725 |
_edge_ref(edge_ref), _node_ref(node_ref) {}
|
| 715 | 726 |
|
| 716 | 727 |
typedef typename From::Arc Key; |
| 717 | 728 |
typedef typename To::Arc Value; |
| 718 | 729 |
|
| 719 | 730 |
Value operator[](const Key& key) const {
|
| 720 | 731 |
bool forward = _from.u(key) != _from.v(key) ? |
| 721 | 732 |
_node_ref[_from.source(key)] == |
| 722 | 733 |
_to.source(_to.direct(_edge_ref[key], true)) : |
| 723 | 734 |
_from.direction(key); |
| 724 | 735 |
return _to.direct(_edge_ref[key], forward); |
| 725 | 736 |
} |
| 726 | 737 |
|
| 727 | 738 |
const From& _from; |
| 728 | 739 |
const To& _to; |
| 729 | 740 |
const EdgeRefMap& _edge_ref; |
| 730 | 741 |
const NodeRefMap& _node_ref; |
| 731 | 742 |
}; |
| 732 | 743 |
|
| 733 | 744 |
public: |
| 734 | 745 |
|
| 735 | 746 |
/// \brief Constructor of GraphCopy. |
| 736 | 747 |
/// |
| 737 | 748 |
/// Constructor of GraphCopy for copying the content of the |
| 738 | 749 |
/// \c from graph into the \c to graph. |
| 739 | 750 |
GraphCopy(const From& from, To& to) |
| 740 | 751 |
: _from(from), _to(to) {}
|
| 741 | 752 |
|
| 742 | 753 |
/// \brief Destructor of GraphCopy |
| 743 | 754 |
/// |
| 744 | 755 |
/// Destructor of GraphCopy. |
| 745 | 756 |
~GraphCopy() {
|
| 746 | 757 |
for (int i = 0; i < int(_node_maps.size()); ++i) {
|
| 747 | 758 |
delete _node_maps[i]; |
| 748 | 759 |
} |
| 749 | 760 |
for (int i = 0; i < int(_arc_maps.size()); ++i) {
|
| 750 | 761 |
delete _arc_maps[i]; |
| 751 | 762 |
} |
| 752 | 763 |
for (int i = 0; i < int(_edge_maps.size()); ++i) {
|
| 753 | 764 |
delete _edge_maps[i]; |
| 754 | 765 |
} |
| 755 | 766 |
} |
| 756 | 767 |
|
| 757 | 768 |
/// \brief Copy the node references into the given map. |
| 758 | 769 |
/// |
| 759 | 770 |
/// This function copies the node references into the given map. |
| 760 | 771 |
/// The parameter should be a map, whose key type is the Node type of |
| 761 | 772 |
/// the source graph, while the value type is the Node type of the |
| 762 | 773 |
/// destination graph. |
| 763 | 774 |
template <typename NodeRef> |
| 764 | 775 |
GraphCopy& nodeRef(NodeRef& map) {
|
| 765 | 776 |
_node_maps.push_back(new _core_bits::RefCopy<From, Node, |
| 766 | 777 |
NodeRefMap, NodeRef>(map)); |
| 767 | 778 |
return *this; |
| 768 | 779 |
} |
| 769 | 780 |
|
| 770 | 781 |
/// \brief Copy the node cross references into the given map. |
| 771 | 782 |
/// |
| 772 | 783 |
/// This function copies the node cross references (reverse references) |
| 773 | 784 |
/// into the given map. The parameter should be a map, whose key type |
| 774 | 785 |
/// is the Node type of the destination graph, while the value type is |
| 775 | 786 |
/// the Node type of the source graph. |
| 776 | 787 |
template <typename NodeCrossRef> |
| 777 | 788 |
GraphCopy& nodeCrossRef(NodeCrossRef& map) {
|
| 778 | 789 |
_node_maps.push_back(new _core_bits::CrossRefCopy<From, Node, |
| 779 | 790 |
NodeRefMap, NodeCrossRef>(map)); |
| 780 | 791 |
return *this; |
| 781 | 792 |
} |
| 782 | 793 |
|
| 783 | 794 |
/// \brief Make a copy of the given node map. |
| 784 | 795 |
/// |
| 785 | 796 |
/// This function makes a copy of the given node map for the newly |
| 786 | 797 |
/// created graph. |
| 787 | 798 |
/// The key type of the new map \c tmap should be the Node type of the |
| 788 | 799 |
/// destination graph, and the key type of the original map \c map |
| 789 | 800 |
/// should be the Node type of the source graph. |
| 790 | 801 |
template <typename FromMap, typename ToMap> |
| 791 | 802 |
GraphCopy& nodeMap(const FromMap& map, ToMap& tmap) {
|
| 792 | 803 |
_node_maps.push_back(new _core_bits::MapCopy<From, Node, |
| 793 | 804 |
NodeRefMap, FromMap, ToMap>(map, tmap)); |
| 794 | 805 |
return *this; |
| 795 | 806 |
} |
| 796 | 807 |
|
| 797 | 808 |
/// \brief Make a copy of the given node. |
| 798 | 809 |
/// |
| 799 | 810 |
/// This function makes a copy of the given node. |
| 800 | 811 |
GraphCopy& node(const Node& node, TNode& tnode) {
|
| 801 | 812 |
_node_maps.push_back(new _core_bits::ItemCopy<From, Node, |
| 802 | 813 |
NodeRefMap, TNode>(node, tnode)); |
| 803 | 814 |
return *this; |
| 804 | 815 |
} |
| 805 | 816 |
|
| 806 | 817 |
/// \brief Copy the arc references into the given map. |
| 807 | 818 |
/// |
| 808 | 819 |
/// This function copies the arc references into the given map. |
| 809 | 820 |
/// The parameter should be a map, whose key type is the Arc type of |
| 810 | 821 |
/// the source graph, while the value type is the Arc type of the |
| 811 | 822 |
/// destination graph. |
| 812 | 823 |
template <typename ArcRef> |
| 813 | 824 |
GraphCopy& arcRef(ArcRef& map) {
|
| 814 | 825 |
_arc_maps.push_back(new _core_bits::RefCopy<From, Arc, |
| 815 | 826 |
ArcRefMap, ArcRef>(map)); |
| 816 | 827 |
return *this; |
| 817 | 828 |
} |
| 818 | 829 |
|
| 819 | 830 |
/// \brief Copy the arc cross references into the given map. |
| 820 | 831 |
/// |
| 821 | 832 |
/// This function copies the arc cross references (reverse references) |
| 822 | 833 |
/// into the given map. The parameter should be a map, whose key type |
| 823 | 834 |
/// is the Arc type of the destination graph, while the value type is |
| 824 | 835 |
/// the Arc type of the source graph. |
| 825 | 836 |
template <typename ArcCrossRef> |
| 826 | 837 |
GraphCopy& arcCrossRef(ArcCrossRef& map) {
|
| 827 | 838 |
_arc_maps.push_back(new _core_bits::CrossRefCopy<From, Arc, |
| 828 | 839 |
ArcRefMap, ArcCrossRef>(map)); |
| 829 | 840 |
return *this; |
| 830 | 841 |
} |
| 831 | 842 |
|
| 832 | 843 |
/// \brief Make a copy of the given arc map. |
| 833 | 844 |
/// |
| 834 | 845 |
/// This function makes a copy of the given arc map for the newly |
| 835 | 846 |
/// created graph. |
| 836 | 847 |
/// The key type of the new map \c tmap should be the Arc type of the |
| 837 | 848 |
/// destination graph, and the key type of the original map \c map |
| 838 | 849 |
/// should be the Arc type of the source graph. |
| 839 | 850 |
template <typename FromMap, typename ToMap> |
| 840 | 851 |
GraphCopy& arcMap(const FromMap& map, ToMap& tmap) {
|
| 841 | 852 |
_arc_maps.push_back(new _core_bits::MapCopy<From, Arc, |
| 842 | 853 |
ArcRefMap, FromMap, ToMap>(map, tmap)); |
| 843 | 854 |
return *this; |
| 844 | 855 |
} |
| 845 | 856 |
|
| 846 | 857 |
/// \brief Make a copy of the given arc. |
| 847 | 858 |
/// |
| 848 | 859 |
/// This function makes a copy of the given arc. |
| 849 | 860 |
GraphCopy& arc(const Arc& arc, TArc& tarc) {
|
| 850 | 861 |
_arc_maps.push_back(new _core_bits::ItemCopy<From, Arc, |
| 851 | 862 |
ArcRefMap, TArc>(arc, tarc)); |
| 852 | 863 |
return *this; |
| 853 | 864 |
} |
| 854 | 865 |
|
| 855 | 866 |
/// \brief Copy the edge references into the given map. |
| 856 | 867 |
/// |
| 857 | 868 |
/// This function copies the edge references into the given map. |
| 858 | 869 |
/// The parameter should be a map, whose key type is the Edge type of |
| 859 | 870 |
/// the source graph, while the value type is the Edge type of the |
| 860 | 871 |
/// destination graph. |
| 861 | 872 |
template <typename EdgeRef> |
| 862 | 873 |
GraphCopy& edgeRef(EdgeRef& map) {
|
| 863 | 874 |
_edge_maps.push_back(new _core_bits::RefCopy<From, Edge, |
| 864 | 875 |
EdgeRefMap, EdgeRef>(map)); |
| 865 | 876 |
return *this; |
| 866 | 877 |
} |
| 867 | 878 |
|
| 868 | 879 |
/// \brief Copy the edge cross references into the given map. |
| 869 | 880 |
/// |
| 870 | 881 |
/// This function copies the edge cross references (reverse references) |
| 871 | 882 |
/// into the given map. The parameter should be a map, whose key type |
| 872 | 883 |
/// is the Edge type of the destination graph, while the value type is |
| 873 | 884 |
/// the Edge type of the source graph. |
| 874 | 885 |
template <typename EdgeCrossRef> |
| 875 | 886 |
GraphCopy& edgeCrossRef(EdgeCrossRef& map) {
|
| 876 | 887 |
_edge_maps.push_back(new _core_bits::CrossRefCopy<From, |
| 877 | 888 |
Edge, EdgeRefMap, EdgeCrossRef>(map)); |
| 878 | 889 |
return *this; |
| 879 | 890 |
} |
| 880 | 891 |
|
| 881 | 892 |
/// \brief Make a copy of the given edge map. |
| 882 | 893 |
/// |
| 883 | 894 |
/// This function makes a copy of the given edge map for the newly |
| 884 | 895 |
/// created graph. |
| 885 | 896 |
/// The key type of the new map \c tmap should be the Edge type of the |
| 886 | 897 |
/// destination graph, and the key type of the original map \c map |
| 887 | 898 |
/// should be the Edge type of the source graph. |
| 888 | 899 |
template <typename FromMap, typename ToMap> |
| 889 | 900 |
GraphCopy& edgeMap(const FromMap& map, ToMap& tmap) {
|
| 890 | 901 |
_edge_maps.push_back(new _core_bits::MapCopy<From, Edge, |
| 891 | 902 |
EdgeRefMap, FromMap, ToMap>(map, tmap)); |
| 892 | 903 |
return *this; |
| 893 | 904 |
} |
| 894 | 905 |
|
| 895 | 906 |
/// \brief Make a copy of the given edge. |
| 896 | 907 |
/// |
| 897 | 908 |
/// This function makes a copy of the given edge. |
| 898 | 909 |
GraphCopy& edge(const Edge& edge, TEdge& tedge) {
|
| 899 | 910 |
_edge_maps.push_back(new _core_bits::ItemCopy<From, Edge, |
| 900 | 911 |
EdgeRefMap, TEdge>(edge, tedge)); |
| 901 | 912 |
return *this; |
| 902 | 913 |
} |
| 903 | 914 |
|
| 904 | 915 |
/// \brief Execute copying. |
| 905 | 916 |
/// |
| 906 | 917 |
/// This function executes the copying of the graph along with the |
| 907 | 918 |
/// copying of the assigned data. |
| 908 | 919 |
void run() {
|
| 909 | 920 |
NodeRefMap nodeRefMap(_from); |
| 910 | 921 |
EdgeRefMap edgeRefMap(_from); |
| 911 | 922 |
ArcRefMap arcRefMap(_from, _to, edgeRefMap, nodeRefMap); |
| 912 | 923 |
_core_bits::GraphCopySelector<To>:: |
| 913 | 924 |
copy(_from, _to, nodeRefMap, edgeRefMap); |
| 914 | 925 |
for (int i = 0; i < int(_node_maps.size()); ++i) {
|
| 915 | 926 |
_node_maps[i]->copy(_from, nodeRefMap); |
| 916 | 927 |
} |
| 917 | 928 |
for (int i = 0; i < int(_edge_maps.size()); ++i) {
|
| 918 | 929 |
_edge_maps[i]->copy(_from, edgeRefMap); |
| 919 | 930 |
} |
| 920 | 931 |
for (int i = 0; i < int(_arc_maps.size()); ++i) {
|
| 921 | 932 |
_arc_maps[i]->copy(_from, arcRefMap); |
| 922 | 933 |
} |
| 923 | 934 |
} |
| 924 | 935 |
|
| 925 | 936 |
private: |
| 926 | 937 |
|
| 927 | 938 |
const From& _from; |
| 928 | 939 |
To& _to; |
| 929 | 940 |
|
| 930 | 941 |
std::vector<_core_bits::MapCopyBase<From, Node, NodeRefMap>* > |
| 931 | 942 |
_node_maps; |
| 932 | 943 |
|
| 933 | 944 |
std::vector<_core_bits::MapCopyBase<From, Arc, ArcRefMap>* > |
| 934 | 945 |
_arc_maps; |
| 935 | 946 |
|
| 936 | 947 |
std::vector<_core_bits::MapCopyBase<From, Edge, EdgeRefMap>* > |
| 937 | 948 |
_edge_maps; |
| 938 | 949 |
|
| 939 | 950 |
}; |
| 940 | 951 |
|
| 941 | 952 |
/// \brief Copy a graph to another graph. |
| 942 | 953 |
/// |
| 943 | 954 |
/// This function copies a graph to another graph. |
| 944 | 955 |
/// The complete usage of it is detailed in the GraphCopy class, |
| 945 | 956 |
/// but a short example shows a basic work: |
| 946 | 957 |
///\code |
| 947 | 958 |
/// graphCopy(src, trg).nodeRef(nr).edgeCrossRef(ecr).run(); |
| 948 | 959 |
///\endcode |
| 949 | 960 |
/// |
| 950 | 961 |
/// After the copy the \c nr map will contain the mapping from the |
| 951 | 962 |
/// nodes of the \c from graph to the nodes of the \c to graph and |
| 952 | 963 |
/// \c ecr will contain the mapping from the edges of the \c to graph |
| 953 | 964 |
/// to the edges of the \c from graph. |
| 954 | 965 |
/// |
| 955 | 966 |
/// \see GraphCopy |
| 956 | 967 |
template <typename From, typename To> |
| 957 | 968 |
GraphCopy<From, To> |
| 958 | 969 |
graphCopy(const From& from, To& to) {
|
| 959 | 970 |
return GraphCopy<From, To>(from, to); |
| 960 | 971 |
} |
| 961 | 972 |
|
| 962 | 973 |
namespace _core_bits {
|
| 963 | 974 |
|
| 964 | 975 |
template <typename Graph, typename Enable = void> |
| 965 | 976 |
struct FindArcSelector {
|
| 966 | 977 |
typedef typename Graph::Node Node; |
| 967 | 978 |
typedef typename Graph::Arc Arc; |
| 968 | 979 |
static Arc find(const Graph &g, Node u, Node v, Arc e) {
|
| 969 | 980 |
if (e == INVALID) {
|
| 970 | 981 |
g.firstOut(e, u); |
| 971 | 982 |
} else {
|
| 972 | 983 |
g.nextOut(e); |
| 973 | 984 |
} |
| 974 | 985 |
while (e != INVALID && g.target(e) != v) {
|
| 975 | 986 |
g.nextOut(e); |
| 976 | 987 |
} |
| 977 | 988 |
return e; |
| 978 | 989 |
} |
| 979 | 990 |
}; |
| 980 | 991 |
|
| 981 | 992 |
template <typename Graph> |
| 982 | 993 |
struct FindArcSelector< |
| 983 | 994 |
Graph, |
| 984 | 995 |
typename enable_if<typename Graph::FindArcTag, void>::type> |
| 985 | 996 |
{
|
| 986 | 997 |
typedef typename Graph::Node Node; |
| 987 | 998 |
typedef typename Graph::Arc Arc; |
| 988 | 999 |
static Arc find(const Graph &g, Node u, Node v, Arc prev) {
|
| 989 | 1000 |
return g.findArc(u, v, prev); |
| 990 | 1001 |
} |
| 991 | 1002 |
}; |
| 992 | 1003 |
} |
| 993 | 1004 |
|
| 994 | 1005 |
/// \brief Find an arc between two nodes of a digraph. |
| 995 | 1006 |
/// |
| 996 | 1007 |
/// This function finds an arc from node \c u to node \c v in the |
| 997 | 1008 |
/// digraph \c g. |
| 998 | 1009 |
/// |
| 999 | 1010 |
/// If \c prev is \ref INVALID (this is the default value), then |
| 1000 | 1011 |
/// it finds the first arc from \c u to \c v. Otherwise it looks for |
| 1001 | 1012 |
/// the next arc from \c u to \c v after \c prev. |
| 1002 | 1013 |
/// \return The found arc or \ref INVALID if there is no such an arc. |
| 1003 | 1014 |
/// |
| 1004 | 1015 |
/// Thus you can iterate through each arc from \c u to \c v as it follows. |
| 1005 | 1016 |
///\code |
| 1006 | 1017 |
/// for(Arc e = findArc(g,u,v); e != INVALID; e = findArc(g,u,v,e)) {
|
| 1007 | 1018 |
/// ... |
| 1008 | 1019 |
/// } |
| 1009 | 1020 |
///\endcode |
| 1010 | 1021 |
/// |
| 1011 | 1022 |
/// \note \ref ConArcIt provides iterator interface for the same |
| 1012 | 1023 |
/// functionality. |
| 1013 | 1024 |
/// |
| 1014 | 1025 |
///\sa ConArcIt |
| 1015 | 1026 |
///\sa ArcLookUp, AllArcLookUp, DynArcLookUp |
| 1016 | 1027 |
template <typename Graph> |
| 1017 | 1028 |
inline typename Graph::Arc |
| 1018 | 1029 |
findArc(const Graph &g, typename Graph::Node u, typename Graph::Node v, |
| 1019 | 1030 |
typename Graph::Arc prev = INVALID) {
|
| 1020 | 1031 |
return _core_bits::FindArcSelector<Graph>::find(g, u, v, prev); |
| 1021 | 1032 |
} |
| 1022 | 1033 |
|
| 1023 | 1034 |
/// \brief Iterator for iterating on parallel arcs connecting the same nodes. |
| 1024 | 1035 |
/// |
| 1025 | 1036 |
/// Iterator for iterating on parallel arcs connecting the same nodes. It is |
| 1026 | 1037 |
/// a higher level interface for the \ref findArc() function. You can |
| 1027 | 1038 |
/// use it the following way: |
| 1028 | 1039 |
///\code |
| 1029 | 1040 |
/// for (ConArcIt<Graph> it(g, src, trg); it != INVALID; ++it) {
|
| 1030 | 1041 |
/// ... |
| 1031 | 1042 |
/// } |
| 1032 | 1043 |
///\endcode |
| 1033 | 1044 |
/// |
| 1034 | 1045 |
///\sa findArc() |
| 1035 | 1046 |
///\sa ArcLookUp, AllArcLookUp, DynArcLookUp |
| 1036 |
template <typename _Graph> |
|
| 1037 |
class ConArcIt : public _Graph::Arc {
|
|
| 1047 |
template <typename GR> |
|
| 1048 |
class ConArcIt : public GR::Arc {
|
|
| 1049 |
typedef typename GR::Arc Parent; |
|
| 1050 |
|
|
| 1038 | 1051 |
public: |
| 1039 | 1052 |
|
| 1040 |
typedef _Graph Graph; |
|
| 1041 |
typedef typename Graph::Arc Parent; |
|
| 1042 |
|
|
| 1043 |
typedef typename Graph::Arc Arc; |
|
| 1044 |
typedef typename |
|
| 1053 |
typedef typename GR::Arc Arc; |
|
| 1054 |
typedef typename GR::Node Node; |
|
| 1045 | 1055 |
|
| 1046 | 1056 |
/// \brief Constructor. |
| 1047 | 1057 |
/// |
| 1048 | 1058 |
/// Construct a new ConArcIt iterating on the arcs that |
| 1049 | 1059 |
/// connects nodes \c u and \c v. |
| 1050 |
ConArcIt(const |
|
| 1060 |
ConArcIt(const GR& g, Node u, Node v) : _graph(g) {
|
|
| 1051 | 1061 |
Parent::operator=(findArc(_graph, u, v)); |
| 1052 | 1062 |
} |
| 1053 | 1063 |
|
| 1054 | 1064 |
/// \brief Constructor. |
| 1055 | 1065 |
/// |
| 1056 | 1066 |
/// Construct a new ConArcIt that continues the iterating from arc \c a. |
| 1057 |
ConArcIt(const |
|
| 1067 |
ConArcIt(const GR& g, Arc a) : Parent(a), _graph(g) {}
|
|
| 1058 | 1068 |
|
| 1059 | 1069 |
/// \brief Increment operator. |
| 1060 | 1070 |
/// |
| 1061 | 1071 |
/// It increments the iterator and gives back the next arc. |
| 1062 | 1072 |
ConArcIt& operator++() {
|
| 1063 | 1073 |
Parent::operator=(findArc(_graph, _graph.source(*this), |
| 1064 | 1074 |
_graph.target(*this), *this)); |
| 1065 | 1075 |
return *this; |
| 1066 | 1076 |
} |
| 1067 | 1077 |
private: |
| 1068 |
const |
|
| 1078 |
const GR& _graph; |
|
| 1069 | 1079 |
}; |
| 1070 | 1080 |
|
| 1071 | 1081 |
namespace _core_bits {
|
| 1072 | 1082 |
|
| 1073 | 1083 |
template <typename Graph, typename Enable = void> |
| 1074 | 1084 |
struct FindEdgeSelector {
|
| 1075 | 1085 |
typedef typename Graph::Node Node; |
| 1076 | 1086 |
typedef typename Graph::Edge Edge; |
| 1077 | 1087 |
static Edge find(const Graph &g, Node u, Node v, Edge e) {
|
| 1078 | 1088 |
bool b; |
| 1079 | 1089 |
if (u != v) {
|
| 1080 | 1090 |
if (e == INVALID) {
|
| 1081 | 1091 |
g.firstInc(e, b, u); |
| 1082 | 1092 |
} else {
|
| 1083 | 1093 |
b = g.u(e) == u; |
| 1084 | 1094 |
g.nextInc(e, b); |
| 1085 | 1095 |
} |
| 1086 | 1096 |
while (e != INVALID && (b ? g.v(e) : g.u(e)) != v) {
|
| 1087 | 1097 |
g.nextInc(e, b); |
| 1088 | 1098 |
} |
| 1089 | 1099 |
} else {
|
| 1090 | 1100 |
if (e == INVALID) {
|
| 1091 | 1101 |
g.firstInc(e, b, u); |
| 1092 | 1102 |
} else {
|
| 1093 | 1103 |
b = true; |
| 1094 | 1104 |
g.nextInc(e, b); |
| 1095 | 1105 |
} |
| 1096 | 1106 |
while (e != INVALID && (!b || g.v(e) != v)) {
|
| 1097 | 1107 |
g.nextInc(e, b); |
| 1098 | 1108 |
} |
| 1099 | 1109 |
} |
| 1100 | 1110 |
return e; |
| 1101 | 1111 |
} |
| 1102 | 1112 |
}; |
| 1103 | 1113 |
|
| 1104 | 1114 |
template <typename Graph> |
| 1105 | 1115 |
struct FindEdgeSelector< |
| 1106 | 1116 |
Graph, |
| 1107 | 1117 |
typename enable_if<typename Graph::FindEdgeTag, void>::type> |
| 1108 | 1118 |
{
|
| 1109 | 1119 |
typedef typename Graph::Node Node; |
| 1110 | 1120 |
typedef typename Graph::Edge Edge; |
| 1111 | 1121 |
static Edge find(const Graph &g, Node u, Node v, Edge prev) {
|
| 1112 | 1122 |
return g.findEdge(u, v, prev); |
| 1113 | 1123 |
} |
| 1114 | 1124 |
}; |
| 1115 | 1125 |
} |
| 1116 | 1126 |
|
| 1117 | 1127 |
/// \brief Find an edge between two nodes of a graph. |
| 1118 | 1128 |
/// |
| 1119 | 1129 |
/// This function finds an edge from node \c u to node \c v in graph \c g. |
| 1120 | 1130 |
/// If node \c u and node \c v is equal then each loop edge |
| 1121 | 1131 |
/// will be enumerated once. |
| 1122 | 1132 |
/// |
| 1123 | 1133 |
/// If \c prev is \ref INVALID (this is the default value), then |
| 1124 | 1134 |
/// it finds the first edge from \c u to \c v. Otherwise it looks for |
| 1125 | 1135 |
/// the next edge from \c u to \c v after \c prev. |
| 1126 | 1136 |
/// \return The found edge or \ref INVALID if there is no such an edge. |
| 1127 | 1137 |
/// |
| 1128 | 1138 |
/// Thus you can iterate through each edge between \c u and \c v |
| 1129 | 1139 |
/// as it follows. |
| 1130 | 1140 |
///\code |
| 1131 | 1141 |
/// for(Edge e = findEdge(g,u,v); e != INVALID; e = findEdge(g,u,v,e)) {
|
| 1132 | 1142 |
/// ... |
| 1133 | 1143 |
/// } |
| 1134 | 1144 |
///\endcode |
| 1135 | 1145 |
/// |
| 1136 | 1146 |
/// \note \ref ConEdgeIt provides iterator interface for the same |
| 1137 | 1147 |
/// functionality. |
| 1138 | 1148 |
/// |
| 1139 | 1149 |
///\sa ConEdgeIt |
| 1140 | 1150 |
template <typename Graph> |
| 1141 | 1151 |
inline typename Graph::Edge |
| 1142 | 1152 |
findEdge(const Graph &g, typename Graph::Node u, typename Graph::Node v, |
| 1143 | 1153 |
typename Graph::Edge p = INVALID) {
|
| 1144 | 1154 |
return _core_bits::FindEdgeSelector<Graph>::find(g, u, v, p); |
| 1145 | 1155 |
} |
| 1146 | 1156 |
|
| 1147 | 1157 |
/// \brief Iterator for iterating on parallel edges connecting the same nodes. |
| 1148 | 1158 |
/// |
| 1149 | 1159 |
/// Iterator for iterating on parallel edges connecting the same nodes. |
| 1150 | 1160 |
/// It is a higher level interface for the findEdge() function. You can |
| 1151 | 1161 |
/// use it the following way: |
| 1152 | 1162 |
///\code |
| 1153 | 1163 |
/// for (ConEdgeIt<Graph> it(g, u, v); it != INVALID; ++it) {
|
| 1154 | 1164 |
/// ... |
| 1155 | 1165 |
/// } |
| 1156 | 1166 |
///\endcode |
| 1157 | 1167 |
/// |
| 1158 | 1168 |
///\sa findEdge() |
| 1159 |
template <typename _Graph> |
|
| 1160 |
class ConEdgeIt : public _Graph::Edge {
|
|
| 1169 |
template <typename GR> |
|
| 1170 |
class ConEdgeIt : public GR::Edge {
|
|
| 1171 |
typedef typename GR::Edge Parent; |
|
| 1172 |
|
|
| 1161 | 1173 |
public: |
| 1162 | 1174 |
|
| 1163 |
typedef _Graph Graph; |
|
| 1164 |
typedef typename Graph::Edge Parent; |
|
| 1165 |
|
|
| 1166 |
typedef typename Graph::Edge Edge; |
|
| 1167 |
typedef typename |
|
| 1175 |
typedef typename GR::Edge Edge; |
|
| 1176 |
typedef typename GR::Node Node; |
|
| 1168 | 1177 |
|
| 1169 | 1178 |
/// \brief Constructor. |
| 1170 | 1179 |
/// |
| 1171 | 1180 |
/// Construct a new ConEdgeIt iterating on the edges that |
| 1172 | 1181 |
/// connects nodes \c u and \c v. |
| 1173 |
ConEdgeIt(const |
|
| 1182 |
ConEdgeIt(const GR& g, Node u, Node v) : _graph(g), _u(u), _v(v) {
|
|
| 1174 | 1183 |
Parent::operator=(findEdge(_graph, _u, _v)); |
| 1175 | 1184 |
} |
| 1176 | 1185 |
|
| 1177 | 1186 |
/// \brief Constructor. |
| 1178 | 1187 |
/// |
| 1179 | 1188 |
/// Construct a new ConEdgeIt that continues iterating from edge \c e. |
| 1180 |
ConEdgeIt(const |
|
| 1189 |
ConEdgeIt(const GR& g, Edge e) : Parent(e), _graph(g) {}
|
|
| 1181 | 1190 |
|
| 1182 | 1191 |
/// \brief Increment operator. |
| 1183 | 1192 |
/// |
| 1184 | 1193 |
/// It increments the iterator and gives back the next edge. |
| 1185 | 1194 |
ConEdgeIt& operator++() {
|
| 1186 | 1195 |
Parent::operator=(findEdge(_graph, _u, _v, *this)); |
| 1187 | 1196 |
return *this; |
| 1188 | 1197 |
} |
| 1189 | 1198 |
private: |
| 1190 |
const |
|
| 1199 |
const GR& _graph; |
|
| 1191 | 1200 |
Node _u, _v; |
| 1192 | 1201 |
}; |
| 1193 | 1202 |
|
| 1194 | 1203 |
|
| 1195 | 1204 |
///Dynamic arc look-up between given endpoints. |
| 1196 | 1205 |
|
| 1197 | 1206 |
///Using this class, you can find an arc in a digraph from a given |
| 1198 | 1207 |
///source to a given target in amortized time <em>O</em>(log<em>d</em>), |
| 1199 | 1208 |
///where <em>d</em> is the out-degree of the source node. |
| 1200 | 1209 |
/// |
| 1201 | 1210 |
///It is possible to find \e all parallel arcs between two nodes with |
| 1202 | 1211 |
///the \c operator() member. |
| 1203 | 1212 |
/// |
| 1204 | 1213 |
///This is a dynamic data structure. Consider to use \ref ArcLookUp or |
| 1205 | 1214 |
///\ref AllArcLookUp if your digraph is not changed so frequently. |
| 1206 | 1215 |
/// |
| 1207 | 1216 |
///This class uses a self-adjusting binary search tree, the Splay tree |
| 1208 | 1217 |
///of Sleator and Tarjan to guarantee the logarithmic amortized |
| 1209 | 1218 |
///time bound for arc look-ups. This class also guarantees the |
| 1210 | 1219 |
///optimal time bound in a constant factor for any distribution of |
| 1211 | 1220 |
///queries. |
| 1212 | 1221 |
/// |
| 1213 |
///\tparam |
|
| 1222 |
///\tparam GR The type of the underlying digraph. |
|
| 1214 | 1223 |
/// |
| 1215 | 1224 |
///\sa ArcLookUp |
| 1216 | 1225 |
///\sa AllArcLookUp |
| 1217 |
template< |
|
| 1226 |
template <typename GR> |
|
| 1218 | 1227 |
class DynArcLookUp |
| 1219 |
: protected ItemSetTraits< |
|
| 1228 |
: protected ItemSetTraits<GR, typename GR::Arc>::ItemNotifier::ObserverBase |
|
| 1220 | 1229 |
{
|
| 1221 |
public: |
|
| 1222 |
typedef typename ItemSetTraits<G, typename G::Arc> |
|
| 1230 |
typedef typename ItemSetTraits<GR, typename GR::Arc> |
|
| 1223 | 1231 |
::ItemNotifier::ObserverBase Parent; |
| 1224 | 1232 |
|
| 1225 |
TEMPLATE_DIGRAPH_TYPEDEFS(G); |
|
| 1226 |
typedef G Digraph; |
|
| 1233 |
TEMPLATE_DIGRAPH_TYPEDEFS(GR); |
|
| 1234 |
|
|
| 1235 |
public: |
|
| 1236 |
|
|
| 1237 |
/// The Digraph type |
|
| 1238 |
typedef GR Digraph; |
|
| 1227 | 1239 |
|
| 1228 | 1240 |
protected: |
| 1229 | 1241 |
|
| 1230 |
class AutoNodeMap : public ItemSetTraits< |
|
| 1242 |
class AutoNodeMap : public ItemSetTraits<GR, Node>::template Map<Arc>::Type {
|
|
| 1243 |
typedef typename ItemSetTraits<GR, Node>::template Map<Arc>::Type Parent; |
|
| 1244 |
|
|
| 1231 | 1245 |
public: |
| 1232 | 1246 |
|
| 1233 |
typedef typename ItemSetTraits<G, Node>::template Map<Arc>::Type Parent; |
|
| 1234 |
|
|
| 1235 |
AutoNodeMap(const |
|
| 1247 |
AutoNodeMap(const GR& digraph) : Parent(digraph, INVALID) {}
|
|
| 1236 | 1248 |
|
| 1237 | 1249 |
virtual void add(const Node& node) {
|
| 1238 | 1250 |
Parent::add(node); |
| 1239 | 1251 |
Parent::set(node, INVALID); |
| 1240 | 1252 |
} |
| 1241 | 1253 |
|
| 1242 | 1254 |
virtual void add(const std::vector<Node>& nodes) {
|
| 1243 | 1255 |
Parent::add(nodes); |
| 1244 | 1256 |
for (int i = 0; i < int(nodes.size()); ++i) {
|
| 1245 | 1257 |
Parent::set(nodes[i], INVALID); |
| 1246 | 1258 |
} |
| 1247 | 1259 |
} |
| 1248 | 1260 |
|
| 1249 | 1261 |
virtual void build() {
|
| 1250 | 1262 |
Parent::build(); |
| 1251 | 1263 |
Node it; |
| 1252 | 1264 |
typename Parent::Notifier* nf = Parent::notifier(); |
| 1253 | 1265 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
| 1254 | 1266 |
Parent::set(it, INVALID); |
| 1255 | 1267 |
} |
| 1256 | 1268 |
} |
| 1257 | 1269 |
}; |
| 1258 | 1270 |
|
| 1259 |
const Digraph &_g; |
|
| 1260 |
AutoNodeMap _head; |
|
| 1261 |
typename Digraph::template ArcMap<Arc> _parent; |
|
| 1262 |
typename Digraph::template ArcMap<Arc> _left; |
|
| 1263 |
typename Digraph::template ArcMap<Arc> _right; |
|
| 1264 |
|
|
| 1265 | 1271 |
class ArcLess {
|
| 1266 | 1272 |
const Digraph &g; |
| 1267 | 1273 |
public: |
| 1268 | 1274 |
ArcLess(const Digraph &_g) : g(_g) {}
|
| 1269 | 1275 |
bool operator()(Arc a,Arc b) const |
| 1270 | 1276 |
{
|
| 1271 | 1277 |
return g.target(a)<g.target(b); |
| 1272 | 1278 |
} |
| 1273 | 1279 |
}; |
| 1274 | 1280 |
|
| 1281 |
protected: |
|
| 1282 |
|
|
| 1283 |
const Digraph &_g; |
|
| 1284 |
AutoNodeMap _head; |
|
| 1285 |
typename Digraph::template ArcMap<Arc> _parent; |
|
| 1286 |
typename Digraph::template ArcMap<Arc> _left; |
|
| 1287 |
typename Digraph::template ArcMap<Arc> _right; |
|
| 1288 |
|
|
| 1275 | 1289 |
public: |
| 1276 | 1290 |
|
| 1277 | 1291 |
///Constructor |
| 1278 | 1292 |
|
| 1279 | 1293 |
///Constructor. |
| 1280 | 1294 |
/// |
| 1281 | 1295 |
///It builds up the search database. |
| 1282 | 1296 |
DynArcLookUp(const Digraph &g) |
| 1283 | 1297 |
: _g(g),_head(g),_parent(g),_left(g),_right(g) |
| 1284 | 1298 |
{
|
| 1285 | 1299 |
Parent::attach(_g.notifier(typename Digraph::Arc())); |
| 1286 | 1300 |
refresh(); |
| 1287 | 1301 |
} |
| 1288 | 1302 |
|
| 1289 | 1303 |
protected: |
| 1290 | 1304 |
|
| 1291 | 1305 |
virtual void add(const Arc& arc) {
|
| 1292 | 1306 |
insert(arc); |
| 1293 | 1307 |
} |
| 1294 | 1308 |
|
| 1295 | 1309 |
virtual void add(const std::vector<Arc>& arcs) {
|
| 1296 | 1310 |
for (int i = 0; i < int(arcs.size()); ++i) {
|
| 1297 | 1311 |
insert(arcs[i]); |
| 1298 | 1312 |
} |
| 1299 | 1313 |
} |
| 1300 | 1314 |
|
| 1301 | 1315 |
virtual void erase(const Arc& arc) {
|
| 1302 | 1316 |
remove(arc); |
| 1303 | 1317 |
} |
| 1304 | 1318 |
|
| 1305 | 1319 |
virtual void erase(const std::vector<Arc>& arcs) {
|
| 1306 | 1320 |
for (int i = 0; i < int(arcs.size()); ++i) {
|
| 1307 | 1321 |
remove(arcs[i]); |
| 1308 | 1322 |
} |
| 1309 | 1323 |
} |
| 1310 | 1324 |
|
| 1311 | 1325 |
virtual void build() {
|
| 1312 | 1326 |
refresh(); |
| 1313 | 1327 |
} |
| 1314 | 1328 |
|
| 1315 | 1329 |
virtual void clear() {
|
| 1316 | 1330 |
for(NodeIt n(_g);n!=INVALID;++n) {
|
| 1317 |
_head |
|
| 1331 |
_head[n] = INVALID; |
|
| 1318 | 1332 |
} |
| 1319 | 1333 |
} |
| 1320 | 1334 |
|
| 1321 | 1335 |
void insert(Arc arc) {
|
| 1322 | 1336 |
Node s = _g.source(arc); |
| 1323 | 1337 |
Node t = _g.target(arc); |
| 1324 |
_left.set(arc, INVALID); |
|
| 1325 |
_right.set(arc, INVALID); |
|
| 1338 |
_left[arc] = INVALID; |
|
| 1339 |
_right[arc] = INVALID; |
|
| 1326 | 1340 |
|
| 1327 | 1341 |
Arc e = _head[s]; |
| 1328 | 1342 |
if (e == INVALID) {
|
| 1329 |
_head.set(s, arc); |
|
| 1330 |
_parent.set(arc, INVALID); |
|
| 1343 |
_head[s] = arc; |
|
| 1344 |
_parent[arc] = INVALID; |
|
| 1331 | 1345 |
return; |
| 1332 | 1346 |
} |
| 1333 | 1347 |
while (true) {
|
| 1334 | 1348 |
if (t < _g.target(e)) {
|
| 1335 | 1349 |
if (_left[e] == INVALID) {
|
| 1336 |
_left.set(e, arc); |
|
| 1337 |
_parent.set(arc, e); |
|
| 1350 |
_left[e] = arc; |
|
| 1351 |
_parent[arc] = e; |
|
| 1338 | 1352 |
splay(arc); |
| 1339 | 1353 |
return; |
| 1340 | 1354 |
} else {
|
| 1341 | 1355 |
e = _left[e]; |
| 1342 | 1356 |
} |
| 1343 | 1357 |
} else {
|
| 1344 | 1358 |
if (_right[e] == INVALID) {
|
| 1345 |
_right.set(e, arc); |
|
| 1346 |
_parent.set(arc, e); |
|
| 1359 |
_right[e] = arc; |
|
| 1360 |
_parent[arc] = e; |
|
| 1347 | 1361 |
splay(arc); |
| 1348 | 1362 |
return; |
| 1349 | 1363 |
} else {
|
| 1350 | 1364 |
e = _right[e]; |
| 1351 | 1365 |
} |
| 1352 | 1366 |
} |
| 1353 | 1367 |
} |
| 1354 | 1368 |
} |
| 1355 | 1369 |
|
| 1356 | 1370 |
void remove(Arc arc) {
|
| 1357 | 1371 |
if (_left[arc] == INVALID) {
|
| 1358 | 1372 |
if (_right[arc] != INVALID) {
|
| 1359 |
_parent |
|
| 1373 |
_parent[_right[arc]] = _parent[arc]; |
|
| 1360 | 1374 |
} |
| 1361 | 1375 |
if (_parent[arc] != INVALID) {
|
| 1362 | 1376 |
if (_left[_parent[arc]] == arc) {
|
| 1363 |
_left |
|
| 1377 |
_left[_parent[arc]] = _right[arc]; |
|
| 1364 | 1378 |
} else {
|
| 1365 |
_right |
|
| 1379 |
_right[_parent[arc]] = _right[arc]; |
|
| 1366 | 1380 |
} |
| 1367 | 1381 |
} else {
|
| 1368 |
_head |
|
| 1382 |
_head[_g.source(arc)] = _right[arc]; |
|
| 1369 | 1383 |
} |
| 1370 | 1384 |
} else if (_right[arc] == INVALID) {
|
| 1371 |
_parent |
|
| 1385 |
_parent[_left[arc]] = _parent[arc]; |
|
| 1372 | 1386 |
if (_parent[arc] != INVALID) {
|
| 1373 | 1387 |
if (_left[_parent[arc]] == arc) {
|
| 1374 |
_left |
|
| 1388 |
_left[_parent[arc]] = _left[arc]; |
|
| 1375 | 1389 |
} else {
|
| 1376 |
_right |
|
| 1390 |
_right[_parent[arc]] = _left[arc]; |
|
| 1377 | 1391 |
} |
| 1378 | 1392 |
} else {
|
| 1379 |
_head |
|
| 1393 |
_head[_g.source(arc)] = _left[arc]; |
|
| 1380 | 1394 |
} |
| 1381 | 1395 |
} else {
|
| 1382 | 1396 |
Arc e = _left[arc]; |
| 1383 | 1397 |
if (_right[e] != INVALID) {
|
| 1384 | 1398 |
e = _right[e]; |
| 1385 | 1399 |
while (_right[e] != INVALID) {
|
| 1386 | 1400 |
e = _right[e]; |
| 1387 | 1401 |
} |
| 1388 | 1402 |
Arc s = _parent[e]; |
| 1389 |
_right |
|
| 1403 |
_right[_parent[e]] = _left[e]; |
|
| 1390 | 1404 |
if (_left[e] != INVALID) {
|
| 1391 |
_parent |
|
| 1405 |
_parent[_left[e]] = _parent[e]; |
|
| 1392 | 1406 |
} |
| 1393 | 1407 |
|
| 1394 |
_left.set(e, _left[arc]); |
|
| 1395 |
_parent.set(_left[arc], e); |
|
| 1396 |
_right.set(e, _right[arc]); |
|
| 1397 |
_parent.set(_right[arc], e); |
|
| 1408 |
_left[e] = _left[arc]; |
|
| 1409 |
_parent[_left[arc]] = e; |
|
| 1410 |
_right[e] = _right[arc]; |
|
| 1411 |
_parent[_right[arc]] = e; |
|
| 1398 | 1412 |
|
| 1399 |
_parent |
|
| 1413 |
_parent[e] = _parent[arc]; |
|
| 1400 | 1414 |
if (_parent[arc] != INVALID) {
|
| 1401 | 1415 |
if (_left[_parent[arc]] == arc) {
|
| 1402 |
_left |
|
| 1416 |
_left[_parent[arc]] = e; |
|
| 1403 | 1417 |
} else {
|
| 1404 |
_right |
|
| 1418 |
_right[_parent[arc]] = e; |
|
| 1405 | 1419 |
} |
| 1406 | 1420 |
} |
| 1407 | 1421 |
splay(s); |
| 1408 | 1422 |
} else {
|
| 1409 |
_right.set(e, _right[arc]); |
|
| 1410 |
_parent.set(_right[arc], e); |
|
| 1411 |
|
|
| 1423 |
_right[e] = _right[arc]; |
|
| 1424 |
_parent[_right[arc]] = e; |
|
| 1425 |
_parent[e] = _parent[arc]; |
|
| 1412 | 1426 |
|
| 1413 | 1427 |
if (_parent[arc] != INVALID) {
|
| 1414 | 1428 |
if (_left[_parent[arc]] == arc) {
|
| 1415 |
_left |
|
| 1429 |
_left[_parent[arc]] = e; |
|
| 1416 | 1430 |
} else {
|
| 1417 |
_right |
|
| 1431 |
_right[_parent[arc]] = e; |
|
| 1418 | 1432 |
} |
| 1419 | 1433 |
} else {
|
| 1420 |
_head |
|
| 1434 |
_head[_g.source(arc)] = e; |
|
| 1421 | 1435 |
} |
| 1422 | 1436 |
} |
| 1423 | 1437 |
} |
| 1424 | 1438 |
} |
| 1425 | 1439 |
|
| 1426 | 1440 |
Arc refreshRec(std::vector<Arc> &v,int a,int b) |
| 1427 | 1441 |
{
|
| 1428 | 1442 |
int m=(a+b)/2; |
| 1429 | 1443 |
Arc me=v[m]; |
| 1430 | 1444 |
if (a < m) {
|
| 1431 | 1445 |
Arc left = refreshRec(v,a,m-1); |
| 1432 |
_left.set(me, left); |
|
| 1433 |
_parent.set(left, me); |
|
| 1446 |
_left[me] = left; |
|
| 1447 |
_parent[left] = me; |
|
| 1434 | 1448 |
} else {
|
| 1435 |
_left |
|
| 1449 |
_left[me] = INVALID; |
|
| 1436 | 1450 |
} |
| 1437 | 1451 |
if (m < b) {
|
| 1438 | 1452 |
Arc right = refreshRec(v,m+1,b); |
| 1439 |
_right.set(me, right); |
|
| 1440 |
_parent.set(right, me); |
|
| 1453 |
_right[me] = right; |
|
| 1454 |
_parent[right] = me; |
|
| 1441 | 1455 |
} else {
|
| 1442 |
_right |
|
| 1456 |
_right[me] = INVALID; |
|
| 1443 | 1457 |
} |
| 1444 | 1458 |
return me; |
| 1445 | 1459 |
} |
| 1446 | 1460 |
|
| 1447 | 1461 |
void refresh() {
|
| 1448 | 1462 |
for(NodeIt n(_g);n!=INVALID;++n) {
|
| 1449 | 1463 |
std::vector<Arc> v; |
| 1450 | 1464 |
for(OutArcIt a(_g,n);a!=INVALID;++a) v.push_back(a); |
| 1451 | 1465 |
if (!v.empty()) {
|
| 1452 | 1466 |
std::sort(v.begin(),v.end(),ArcLess(_g)); |
| 1453 | 1467 |
Arc head = refreshRec(v,0,v.size()-1); |
| 1454 |
_head.set(n, head); |
|
| 1455 |
_parent.set(head, INVALID); |
|
| 1468 |
_head[n] = head; |
|
| 1469 |
_parent[head] = INVALID; |
|
| 1456 | 1470 |
} |
| 1457 |
else _head |
|
| 1471 |
else _head[n] = INVALID; |
|
| 1458 | 1472 |
} |
| 1459 | 1473 |
} |
| 1460 | 1474 |
|
| 1461 | 1475 |
void zig(Arc v) {
|
| 1462 | 1476 |
Arc w = _parent[v]; |
| 1463 |
_parent.set(v, _parent[w]); |
|
| 1464 |
_parent.set(w, v); |
|
| 1465 |
_left.set(w, _right[v]); |
|
| 1466 |
_right.set(v, w); |
|
| 1477 |
_parent[v] = _parent[w]; |
|
| 1478 |
_parent[w] = v; |
|
| 1479 |
_left[w] = _right[v]; |
|
| 1480 |
_right[v] = w; |
|
| 1467 | 1481 |
if (_parent[v] != INVALID) {
|
| 1468 | 1482 |
if (_right[_parent[v]] == w) {
|
| 1469 |
_right |
|
| 1483 |
_right[_parent[v]] = v; |
|
| 1470 | 1484 |
} else {
|
| 1471 |
_left |
|
| 1485 |
_left[_parent[v]] = v; |
|
| 1472 | 1486 |
} |
| 1473 | 1487 |
} |
| 1474 | 1488 |
if (_left[w] != INVALID){
|
| 1475 |
_parent |
|
| 1489 |
_parent[_left[w]] = w; |
|
| 1476 | 1490 |
} |
| 1477 | 1491 |
} |
| 1478 | 1492 |
|
| 1479 | 1493 |
void zag(Arc v) {
|
| 1480 | 1494 |
Arc w = _parent[v]; |
| 1481 |
_parent.set(v, _parent[w]); |
|
| 1482 |
_parent.set(w, v); |
|
| 1483 |
_right.set(w, _left[v]); |
|
| 1484 |
_left.set(v, w); |
|
| 1495 |
_parent[v] = _parent[w]; |
|
| 1496 |
_parent[w] = v; |
|
| 1497 |
_right[w] = _left[v]; |
|
| 1498 |
_left[v] = w; |
|
| 1485 | 1499 |
if (_parent[v] != INVALID){
|
| 1486 | 1500 |
if (_left[_parent[v]] == w) {
|
| 1487 |
_left |
|
| 1501 |
_left[_parent[v]] = v; |
|
| 1488 | 1502 |
} else {
|
| 1489 |
_right |
|
| 1503 |
_right[_parent[v]] = v; |
|
| 1490 | 1504 |
} |
| 1491 | 1505 |
} |
| 1492 | 1506 |
if (_right[w] != INVALID){
|
| 1493 |
_parent |
|
| 1507 |
_parent[_right[w]] = w; |
|
| 1494 | 1508 |
} |
| 1495 | 1509 |
} |
| 1496 | 1510 |
|
| 1497 | 1511 |
void splay(Arc v) {
|
| 1498 | 1512 |
while (_parent[v] != INVALID) {
|
| 1499 | 1513 |
if (v == _left[_parent[v]]) {
|
| 1500 | 1514 |
if (_parent[_parent[v]] == INVALID) {
|
| 1501 | 1515 |
zig(v); |
| 1502 | 1516 |
} else {
|
| 1503 | 1517 |
if (_parent[v] == _left[_parent[_parent[v]]]) {
|
| 1504 | 1518 |
zig(_parent[v]); |
| 1505 | 1519 |
zig(v); |
| 1506 | 1520 |
} else {
|
| 1507 | 1521 |
zig(v); |
| 1508 | 1522 |
zag(v); |
| 1509 | 1523 |
} |
| 1510 | 1524 |
} |
| 1511 | 1525 |
} else {
|
| 1512 | 1526 |
if (_parent[_parent[v]] == INVALID) {
|
| 1513 | 1527 |
zag(v); |
| 1514 | 1528 |
} else {
|
| 1515 | 1529 |
if (_parent[v] == _left[_parent[_parent[v]]]) {
|
| 1516 | 1530 |
zag(v); |
| 1517 | 1531 |
zig(v); |
| 1518 | 1532 |
} else {
|
| 1519 | 1533 |
zag(_parent[v]); |
| 1520 | 1534 |
zag(v); |
| 1521 | 1535 |
} |
| 1522 | 1536 |
} |
| 1523 | 1537 |
} |
| 1524 | 1538 |
} |
| 1525 | 1539 |
_head[_g.source(v)] = v; |
| 1526 | 1540 |
} |
| 1527 | 1541 |
|
| 1528 | 1542 |
|
| 1529 | 1543 |
public: |
| 1530 | 1544 |
|
| 1531 | 1545 |
///Find an arc between two nodes. |
| 1532 | 1546 |
|
| 1533 | 1547 |
///Find an arc between two nodes. |
| 1534 | 1548 |
///\param s The source node. |
| 1535 | 1549 |
///\param t The target node. |
| 1536 | 1550 |
///\param p The previous arc between \c s and \c t. It it is INVALID or |
| 1537 | 1551 |
///not given, the operator finds the first appropriate arc. |
| 1538 | 1552 |
///\return An arc from \c s to \c t after \c p or |
| 1539 | 1553 |
///\ref INVALID if there is no more. |
| 1540 | 1554 |
/// |
| 1541 | 1555 |
///For example, you can count the number of arcs from \c u to \c v in the |
| 1542 | 1556 |
///following way. |
| 1543 | 1557 |
///\code |
| 1544 | 1558 |
///DynArcLookUp<ListDigraph> ae(g); |
| 1545 | 1559 |
///... |
| 1546 | 1560 |
///int n = 0; |
| 1547 | 1561 |
///for(Arc a = ae(u,v); a != INVALID; a = ae(u,v,a)) n++; |
| 1548 | 1562 |
///\endcode |
| 1549 | 1563 |
/// |
| 1550 | 1564 |
///Finding the arcs take at most <em>O</em>(log<em>d</em>) |
| 1551 | 1565 |
///amortized time, specifically, the time complexity of the lookups |
| 1552 | 1566 |
///is equal to the optimal search tree implementation for the |
| 1553 | 1567 |
///current query distribution in a constant factor. |
| 1554 | 1568 |
/// |
| 1555 | 1569 |
///\note This is a dynamic data structure, therefore the data |
| 1556 | 1570 |
///structure is updated after each graph alteration. Thus although |
| 1557 | 1571 |
///this data structure is theoretically faster than \ref ArcLookUp |
| 1558 | 1572 |
///and \ref AllArcLookUp, it often provides worse performance than |
| 1559 | 1573 |
///them. |
| 1560 | 1574 |
Arc operator()(Node s, Node t, Arc p = INVALID) const {
|
| 1561 | 1575 |
if (p == INVALID) {
|
| 1562 | 1576 |
Arc a = _head[s]; |
| 1563 | 1577 |
if (a == INVALID) return INVALID; |
| 1564 | 1578 |
Arc r = INVALID; |
| 1565 | 1579 |
while (true) {
|
| 1566 | 1580 |
if (_g.target(a) < t) {
|
| 1567 | 1581 |
if (_right[a] == INVALID) {
|
| 1568 | 1582 |
const_cast<DynArcLookUp&>(*this).splay(a); |
| 1569 | 1583 |
return r; |
| 1570 | 1584 |
} else {
|
| 1571 | 1585 |
a = _right[a]; |
| 1572 | 1586 |
} |
| 1573 | 1587 |
} else {
|
| 1574 | 1588 |
if (_g.target(a) == t) {
|
| 1575 | 1589 |
r = a; |
| 1576 | 1590 |
} |
| 1577 | 1591 |
if (_left[a] == INVALID) {
|
| 1578 | 1592 |
const_cast<DynArcLookUp&>(*this).splay(a); |
| 1579 | 1593 |
return r; |
| 1580 | 1594 |
} else {
|
| 1581 | 1595 |
a = _left[a]; |
| 1582 | 1596 |
} |
| 1583 | 1597 |
} |
| 1584 | 1598 |
} |
| 1585 | 1599 |
} else {
|
| 1586 | 1600 |
Arc a = p; |
| 1587 | 1601 |
if (_right[a] != INVALID) {
|
| 1588 | 1602 |
a = _right[a]; |
| 1589 | 1603 |
while (_left[a] != INVALID) {
|
| 1590 | 1604 |
a = _left[a]; |
| 1591 | 1605 |
} |
| 1592 | 1606 |
const_cast<DynArcLookUp&>(*this).splay(a); |
| 1593 | 1607 |
} else {
|
| 1594 | 1608 |
while (_parent[a] != INVALID && _right[_parent[a]] == a) {
|
| 1595 | 1609 |
a = _parent[a]; |
| 1596 | 1610 |
} |
| 1597 | 1611 |
if (_parent[a] == INVALID) {
|
| 1598 | 1612 |
return INVALID; |
| 1599 | 1613 |
} else {
|
| 1600 | 1614 |
a = _parent[a]; |
| 1601 | 1615 |
const_cast<DynArcLookUp&>(*this).splay(a); |
| 1602 | 1616 |
} |
| 1603 | 1617 |
} |
| 1604 | 1618 |
if (_g.target(a) == t) return a; |
| 1605 | 1619 |
else return INVALID; |
| 1606 | 1620 |
} |
| 1607 | 1621 |
} |
| 1608 | 1622 |
|
| 1609 | 1623 |
}; |
| 1610 | 1624 |
|
| 1611 | 1625 |
///Fast arc look-up between given endpoints. |
| 1612 | 1626 |
|
| 1613 | 1627 |
///Using this class, you can find an arc in a digraph from a given |
| 1614 | 1628 |
///source to a given target in time <em>O</em>(log<em>d</em>), |
| 1615 | 1629 |
///where <em>d</em> is the out-degree of the source node. |
| 1616 | 1630 |
/// |
| 1617 | 1631 |
///It is not possible to find \e all parallel arcs between two nodes. |
| 1618 | 1632 |
///Use \ref AllArcLookUp for this purpose. |
| 1619 | 1633 |
/// |
| 1620 | 1634 |
///\warning This class is static, so you should call refresh() (or at |
| 1621 | 1635 |
///least refresh(Node)) to refresh this data structure whenever the |
| 1622 | 1636 |
///digraph changes. This is a time consuming (superlinearly proportional |
| 1623 | 1637 |
///(<em>O</em>(<em>m</em> log<em>m</em>)) to the number of arcs). |
| 1624 | 1638 |
/// |
| 1625 |
///\tparam |
|
| 1639 |
///\tparam GR The type of the underlying digraph. |
|
| 1626 | 1640 |
/// |
| 1627 | 1641 |
///\sa DynArcLookUp |
| 1628 | 1642 |
///\sa AllArcLookUp |
| 1629 |
template<class |
|
| 1643 |
template<class GR> |
|
| 1630 | 1644 |
class ArcLookUp |
| 1631 | 1645 |
{
|
| 1646 |
TEMPLATE_DIGRAPH_TYPEDEFS(GR); |
|
| 1647 |
|
|
| 1632 | 1648 |
public: |
| 1633 |
TEMPLATE_DIGRAPH_TYPEDEFS(G); |
|
| 1634 |
typedef G Digraph; |
|
| 1649 |
|
|
| 1650 |
/// The Digraph type |
|
| 1651 |
typedef GR Digraph; |
|
| 1635 | 1652 |
|
| 1636 | 1653 |
protected: |
| 1637 | 1654 |
const Digraph &_g; |
| 1638 | 1655 |
typename Digraph::template NodeMap<Arc> _head; |
| 1639 | 1656 |
typename Digraph::template ArcMap<Arc> _left; |
| 1640 | 1657 |
typename Digraph::template ArcMap<Arc> _right; |
| 1641 | 1658 |
|
| 1642 | 1659 |
class ArcLess {
|
| 1643 | 1660 |
const Digraph &g; |
| 1644 | 1661 |
public: |
| 1645 | 1662 |
ArcLess(const Digraph &_g) : g(_g) {}
|
| 1646 | 1663 |
bool operator()(Arc a,Arc b) const |
| 1647 | 1664 |
{
|
| 1648 | 1665 |
return g.target(a)<g.target(b); |
| 1649 | 1666 |
} |
| 1650 | 1667 |
}; |
| 1651 | 1668 |
|
| 1652 | 1669 |
public: |
| 1653 | 1670 |
|
| 1654 | 1671 |
///Constructor |
| 1655 | 1672 |
|
| 1656 | 1673 |
///Constructor. |
| 1657 | 1674 |
/// |
| 1658 | 1675 |
///It builds up the search database, which remains valid until the digraph |
| 1659 | 1676 |
///changes. |
| 1660 | 1677 |
ArcLookUp(const Digraph &g) :_g(g),_head(g),_left(g),_right(g) {refresh();}
|
| 1661 | 1678 |
|
| 1662 | 1679 |
private: |
| 1663 | 1680 |
Arc refreshRec(std::vector<Arc> &v,int a,int b) |
| 1664 | 1681 |
{
|
| 1665 | 1682 |
int m=(a+b)/2; |
| 1666 | 1683 |
Arc me=v[m]; |
| 1667 | 1684 |
_left[me] = a<m?refreshRec(v,a,m-1):INVALID; |
| 1668 | 1685 |
_right[me] = m<b?refreshRec(v,m+1,b):INVALID; |
| 1669 | 1686 |
return me; |
| 1670 | 1687 |
} |
| 1671 | 1688 |
public: |
| 1672 | 1689 |
///Refresh the search data structure at a node. |
| 1673 | 1690 |
|
| 1674 | 1691 |
///Build up the search database of node \c n. |
| 1675 | 1692 |
/// |
| 1676 | 1693 |
///It runs in time <em>O</em>(<em>d</em> log<em>d</em>), where <em>d</em> |
| 1677 | 1694 |
///is the number of the outgoing arcs of \c n. |
| 1678 | 1695 |
void refresh(Node n) |
| 1679 | 1696 |
{
|
| 1680 | 1697 |
std::vector<Arc> v; |
| 1681 | 1698 |
for(OutArcIt e(_g,n);e!=INVALID;++e) v.push_back(e); |
| 1682 | 1699 |
if(v.size()) {
|
| 1683 | 1700 |
std::sort(v.begin(),v.end(),ArcLess(_g)); |
| 1684 | 1701 |
_head[n]=refreshRec(v,0,v.size()-1); |
| 1685 | 1702 |
} |
| 1686 | 1703 |
else _head[n]=INVALID; |
| 1687 | 1704 |
} |
| 1688 | 1705 |
///Refresh the full data structure. |
| 1689 | 1706 |
|
| 1690 | 1707 |
///Build up the full search database. In fact, it simply calls |
| 1691 | 1708 |
///\ref refresh(Node) "refresh(n)" for each node \c n. |
| 1692 | 1709 |
/// |
| 1693 | 1710 |
///It runs in time <em>O</em>(<em>m</em> log<em>D</em>), where <em>m</em> is |
| 1694 | 1711 |
///the number of the arcs in the digraph and <em>D</em> is the maximum |
| 1695 | 1712 |
///out-degree of the digraph. |
| 1696 | 1713 |
void refresh() |
| 1697 | 1714 |
{
|
| 1698 | 1715 |
for(NodeIt n(_g);n!=INVALID;++n) refresh(n); |
| 1699 | 1716 |
} |
| 1700 | 1717 |
|
| 1701 | 1718 |
///Find an arc between two nodes. |
| 1702 | 1719 |
|
| 1703 | 1720 |
///Find an arc between two nodes in time <em>O</em>(log<em>d</em>), |
| 1704 | 1721 |
///where <em>d</em> is the number of outgoing arcs of \c s. |
| 1705 | 1722 |
///\param s The source node. |
| 1706 | 1723 |
///\param t The target node. |
| 1707 | 1724 |
///\return An arc from \c s to \c t if there exists, |
| 1708 | 1725 |
///\ref INVALID otherwise. |
| 1709 | 1726 |
/// |
| 1710 | 1727 |
///\warning If you change the digraph, refresh() must be called before using |
| 1711 | 1728 |
///this operator. If you change the outgoing arcs of |
| 1712 | 1729 |
///a single node \c n, then \ref refresh(Node) "refresh(n)" is enough. |
| 1713 | 1730 |
Arc operator()(Node s, Node t) const |
| 1714 | 1731 |
{
|
| 1715 | 1732 |
Arc e; |
| 1716 | 1733 |
for(e=_head[s]; |
| 1717 | 1734 |
e!=INVALID&&_g.target(e)!=t; |
| 1718 | 1735 |
e = t < _g.target(e)?_left[e]:_right[e]) ; |
| 1719 | 1736 |
return e; |
| 1720 | 1737 |
} |
| 1721 | 1738 |
|
| 1722 | 1739 |
}; |
| 1723 | 1740 |
|
| 1724 | 1741 |
///Fast look-up of all arcs between given endpoints. |
| 1725 | 1742 |
|
| 1726 | 1743 |
///This class is the same as \ref ArcLookUp, with the addition |
| 1727 | 1744 |
///that it makes it possible to find all parallel arcs between given |
| 1728 | 1745 |
///endpoints. |
| 1729 | 1746 |
/// |
| 1730 | 1747 |
///\warning This class is static, so you should call refresh() (or at |
| 1731 | 1748 |
///least refresh(Node)) to refresh this data structure whenever the |
| 1732 | 1749 |
///digraph changes. This is a time consuming (superlinearly proportional |
| 1733 | 1750 |
///(<em>O</em>(<em>m</em> log<em>m</em>)) to the number of arcs). |
| 1734 | 1751 |
/// |
| 1735 |
///\tparam |
|
| 1752 |
///\tparam GR The type of the underlying digraph. |
|
| 1736 | 1753 |
/// |
| 1737 | 1754 |
///\sa DynArcLookUp |
| 1738 | 1755 |
///\sa ArcLookUp |
| 1739 |
template<class G> |
|
| 1740 |
class AllArcLookUp : public ArcLookUp<G> |
|
| 1756 |
template<class GR> |
|
| 1757 |
class AllArcLookUp : public ArcLookUp<GR> |
|
| 1741 | 1758 |
{
|
| 1742 |
using ArcLookUp<G>::_g; |
|
| 1743 |
using ArcLookUp<G>::_right; |
|
| 1744 |
using ArcLookUp<G>::_left; |
|
| 1745 |
using ArcLookUp<G>::_head; |
|
| 1759 |
using ArcLookUp<GR>::_g; |
|
| 1760 |
using ArcLookUp<GR>::_right; |
|
| 1761 |
using ArcLookUp<GR>::_left; |
|
| 1762 |
using ArcLookUp<GR>::_head; |
|
| 1746 | 1763 |
|
| 1747 |
TEMPLATE_DIGRAPH_TYPEDEFS(G); |
|
| 1748 |
typedef G Digraph; |
|
| 1764 |
TEMPLATE_DIGRAPH_TYPEDEFS(GR); |
|
| 1749 | 1765 |
|
| 1750 |
typename |
|
| 1766 |
typename GR::template ArcMap<Arc> _next; |
|
| 1751 | 1767 |
|
| 1752 | 1768 |
Arc refreshNext(Arc head,Arc next=INVALID) |
| 1753 | 1769 |
{
|
| 1754 | 1770 |
if(head==INVALID) return next; |
| 1755 | 1771 |
else {
|
| 1756 | 1772 |
next=refreshNext(_right[head],next); |
| 1757 | 1773 |
_next[head]=( next!=INVALID && _g.target(next)==_g.target(head)) |
| 1758 | 1774 |
? next : INVALID; |
| 1759 | 1775 |
return refreshNext(_left[head],head); |
| 1760 | 1776 |
} |
| 1761 | 1777 |
} |
| 1762 | 1778 |
|
| 1763 | 1779 |
void refreshNext() |
| 1764 | 1780 |
{
|
| 1765 | 1781 |
for(NodeIt n(_g);n!=INVALID;++n) refreshNext(_head[n]); |
| 1766 | 1782 |
} |
| 1767 | 1783 |
|
| 1768 | 1784 |
public: |
| 1785 |
|
|
| 1786 |
/// The Digraph type |
|
| 1787 |
typedef GR Digraph; |
|
| 1788 |
|
|
| 1769 | 1789 |
///Constructor |
| 1770 | 1790 |
|
| 1771 | 1791 |
///Constructor. |
| 1772 | 1792 |
/// |
| 1773 | 1793 |
///It builds up the search database, which remains valid until the digraph |
| 1774 | 1794 |
///changes. |
| 1775 |
AllArcLookUp(const Digraph &g) : ArcLookUp< |
|
| 1795 |
AllArcLookUp(const Digraph &g) : ArcLookUp<GR>(g), _next(g) {refreshNext();}
|
|
| 1776 | 1796 |
|
| 1777 | 1797 |
///Refresh the data structure at a node. |
| 1778 | 1798 |
|
| 1779 | 1799 |
///Build up the search database of node \c n. |
| 1780 | 1800 |
/// |
| 1781 | 1801 |
///It runs in time <em>O</em>(<em>d</em> log<em>d</em>), where <em>d</em> is |
| 1782 | 1802 |
///the number of the outgoing arcs of \c n. |
| 1783 | 1803 |
void refresh(Node n) |
| 1784 | 1804 |
{
|
| 1785 |
ArcLookUp< |
|
| 1805 |
ArcLookUp<GR>::refresh(n); |
|
| 1786 | 1806 |
refreshNext(_head[n]); |
| 1787 | 1807 |
} |
| 1788 | 1808 |
|
| 1789 | 1809 |
///Refresh the full data structure. |
| 1790 | 1810 |
|
| 1791 | 1811 |
///Build up the full search database. In fact, it simply calls |
| 1792 | 1812 |
///\ref refresh(Node) "refresh(n)" for each node \c n. |
| 1793 | 1813 |
/// |
| 1794 | 1814 |
///It runs in time <em>O</em>(<em>m</em> log<em>D</em>), where <em>m</em> is |
| 1795 | 1815 |
///the number of the arcs in the digraph and <em>D</em> is the maximum |
| 1796 | 1816 |
///out-degree of the digraph. |
| 1797 | 1817 |
void refresh() |
| 1798 | 1818 |
{
|
| 1799 | 1819 |
for(NodeIt n(_g);n!=INVALID;++n) refresh(_head[n]); |
| 1800 | 1820 |
} |
| 1801 | 1821 |
|
| 1802 | 1822 |
///Find an arc between two nodes. |
| 1803 | 1823 |
|
| 1804 | 1824 |
///Find an arc between two nodes. |
| 1805 | 1825 |
///\param s The source node. |
| 1806 | 1826 |
///\param t The target node. |
| 1807 | 1827 |
///\param prev The previous arc between \c s and \c t. It it is INVALID or |
| 1808 | 1828 |
///not given, the operator finds the first appropriate arc. |
| 1809 | 1829 |
///\return An arc from \c s to \c t after \c prev or |
| 1810 | 1830 |
///\ref INVALID if there is no more. |
| 1811 | 1831 |
/// |
| 1812 | 1832 |
///For example, you can count the number of arcs from \c u to \c v in the |
| 1813 | 1833 |
///following way. |
| 1814 | 1834 |
///\code |
| 1815 | 1835 |
///AllArcLookUp<ListDigraph> ae(g); |
| 1816 | 1836 |
///... |
| 1817 | 1837 |
///int n = 0; |
| 1818 | 1838 |
///for(Arc a = ae(u,v); a != INVALID; a=ae(u,v,a)) n++; |
| 1819 | 1839 |
///\endcode |
| 1820 | 1840 |
/// |
| 1821 | 1841 |
///Finding the first arc take <em>O</em>(log<em>d</em>) time, |
| 1822 | 1842 |
///where <em>d</em> is the number of outgoing arcs of \c s. Then the |
| 1823 | 1843 |
///consecutive arcs are found in constant time. |
| 1824 | 1844 |
/// |
| 1825 | 1845 |
///\warning If you change the digraph, refresh() must be called before using |
| 1826 | 1846 |
///this operator. If you change the outgoing arcs of |
| 1827 | 1847 |
///a single node \c n, then \ref refresh(Node) "refresh(n)" is enough. |
| 1828 | 1848 |
/// |
| 1829 | 1849 |
#ifdef DOXYGEN |
| 1830 | 1850 |
Arc operator()(Node s, Node t, Arc prev=INVALID) const {}
|
| 1831 | 1851 |
#else |
| 1832 |
using ArcLookUp< |
|
| 1852 |
using ArcLookUp<GR>::operator() ; |
|
| 1833 | 1853 |
Arc operator()(Node s, Node t, Arc prev) const |
| 1834 | 1854 |
{
|
| 1835 | 1855 |
return prev==INVALID?(*this)(s,t):_next[prev]; |
| 1836 | 1856 |
} |
| 1837 | 1857 |
#endif |
| 1838 | 1858 |
|
| 1839 | 1859 |
}; |
| 1840 | 1860 |
|
| 1841 | 1861 |
/// @} |
| 1842 | 1862 |
|
| 1843 | 1863 |
} //namespace lemon |
| 1844 | 1864 |
|
| 1845 | 1865 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 |
* Copyright (C) 2003- |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <iostream> |
| 20 | 20 |
#include <vector> |
| 21 | 21 |
#include <cstring> |
| 22 | 22 |
|
| 23 | 23 |
#include <lemon/cplex.h> |
| 24 | 24 |
|
| 25 | 25 |
extern "C" {
|
| 26 | 26 |
#include <ilcplex/cplex.h> |
| 27 | 27 |
} |
| 28 | 28 |
|
| 29 | 29 |
|
| 30 | 30 |
///\file |
| 31 | 31 |
///\brief Implementation of the LEMON-CPLEX lp solver interface. |
| 32 | 32 |
namespace lemon {
|
| 33 | 33 |
|
| 34 | 34 |
CplexEnv::LicenseError::LicenseError(int status) {
|
| 35 | 35 |
if (!CPXgeterrorstring(0, status, _message)) {
|
| 36 | 36 |
std::strcpy(_message, "Cplex unknown error"); |
| 37 | 37 |
} |
| 38 | 38 |
} |
| 39 | 39 |
|
| 40 | 40 |
CplexEnv::CplexEnv() {
|
| 41 | 41 |
int status; |
| 42 | 42 |
_cnt = new int; |
| 43 | 43 |
_env = CPXopenCPLEX(&status); |
| 44 | 44 |
if (_env == 0) {
|
| 45 | 45 |
delete _cnt; |
| 46 | 46 |
_cnt = 0; |
| 47 | 47 |
throw LicenseError(status); |
| 48 | 48 |
} |
| 49 | 49 |
} |
| 50 | 50 |
|
| 51 | 51 |
CplexEnv::CplexEnv(const CplexEnv& other) {
|
| 52 | 52 |
_env = other._env; |
| 53 | 53 |
_cnt = other._cnt; |
| 54 | 54 |
++(*_cnt); |
| 55 | 55 |
} |
| 56 | 56 |
|
| 57 | 57 |
CplexEnv& CplexEnv::operator=(const CplexEnv& other) {
|
| 58 | 58 |
_env = other._env; |
| 59 | 59 |
_cnt = other._cnt; |
| 60 | 60 |
++(*_cnt); |
| 61 | 61 |
return *this; |
| 62 | 62 |
} |
| 63 | 63 |
|
| 64 | 64 |
CplexEnv::~CplexEnv() {
|
| 65 | 65 |
--(*_cnt); |
| 66 | 66 |
if (*_cnt == 0) {
|
| 67 | 67 |
delete _cnt; |
| 68 | 68 |
CPXcloseCPLEX(&_env); |
| 69 | 69 |
} |
| 70 | 70 |
} |
| 71 | 71 |
|
| 72 | 72 |
CplexBase::CplexBase() : LpBase() {
|
| 73 | 73 |
int status; |
| 74 | 74 |
_prob = CPXcreateprob(cplexEnv(), &status, "Cplex problem"); |
| 75 |
messageLevel(MESSAGE_NOTHING); |
|
| 75 | 76 |
} |
| 76 | 77 |
|
| 77 | 78 |
CplexBase::CplexBase(const CplexEnv& env) |
| 78 | 79 |
: LpBase(), _env(env) {
|
| 79 | 80 |
int status; |
| 80 | 81 |
_prob = CPXcreateprob(cplexEnv(), &status, "Cplex problem"); |
| 82 |
messageLevel(MESSAGE_NOTHING); |
|
| 81 | 83 |
} |
| 82 | 84 |
|
| 83 | 85 |
CplexBase::CplexBase(const CplexBase& cplex) |
| 84 | 86 |
: LpBase() {
|
| 85 | 87 |
int status; |
| 86 | 88 |
_prob = CPXcloneprob(cplexEnv(), cplex._prob, &status); |
| 87 | 89 |
rows = cplex.rows; |
| 88 | 90 |
cols = cplex.cols; |
| 91 |
messageLevel(MESSAGE_NOTHING); |
|
| 89 | 92 |
} |
| 90 | 93 |
|
| 91 | 94 |
CplexBase::~CplexBase() {
|
| 92 | 95 |
CPXfreeprob(cplexEnv(),&_prob); |
| 93 | 96 |
} |
| 94 | 97 |
|
| 95 | 98 |
int CplexBase::_addCol() {
|
| 96 | 99 |
int i = CPXgetnumcols(cplexEnv(), _prob); |
| 97 | 100 |
double lb = -INF, ub = INF; |
| 98 | 101 |
CPXnewcols(cplexEnv(), _prob, 1, 0, &lb, &ub, 0, 0); |
| 99 | 102 |
return i; |
| 100 | 103 |
} |
| 101 | 104 |
|
| 102 | 105 |
|
| 103 | 106 |
int CplexBase::_addRow() {
|
| 104 | 107 |
int i = CPXgetnumrows(cplexEnv(), _prob); |
| 105 | 108 |
const double ub = INF; |
| 106 | 109 |
const char s = 'L'; |
| 107 | 110 |
CPXnewrows(cplexEnv(), _prob, 1, &ub, &s, 0, 0); |
| 108 | 111 |
return i; |
| 109 | 112 |
} |
| 110 | 113 |
|
| 114 |
int CplexBase::_addRow(Value lb, ExprIterator b, |
|
| 115 |
ExprIterator e, Value ub) {
|
|
| 116 |
int i = CPXgetnumrows(cplexEnv(), _prob); |
|
| 117 |
if (lb == -INF) {
|
|
| 118 |
const char s = 'L'; |
|
| 119 |
CPXnewrows(cplexEnv(), _prob, 1, &ub, &s, 0, 0); |
|
| 120 |
} else if (ub == INF) {
|
|
| 121 |
const char s = 'G'; |
|
| 122 |
CPXnewrows(cplexEnv(), _prob, 1, &lb, &s, 0, 0); |
|
| 123 |
} else if (lb == ub){
|
|
| 124 |
const char s = 'E'; |
|
| 125 |
CPXnewrows(cplexEnv(), _prob, 1, &lb, &s, 0, 0); |
|
| 126 |
} else {
|
|
| 127 |
const char s = 'R'; |
|
| 128 |
double len = ub - lb; |
|
| 129 |
CPXnewrows(cplexEnv(), _prob, 1, &lb, &s, &len, 0); |
|
| 130 |
} |
|
| 131 |
|
|
| 132 |
std::vector<int> indices; |
|
| 133 |
std::vector<int> rowlist; |
|
| 134 |
std::vector<Value> values; |
|
| 135 |
|
|
| 136 |
for(ExprIterator it=b; it!=e; ++it) {
|
|
| 137 |
indices.push_back(it->first); |
|
| 138 |
values.push_back(it->second); |
|
| 139 |
rowlist.push_back(i); |
|
| 140 |
} |
|
| 141 |
|
|
| 142 |
CPXchgcoeflist(cplexEnv(), _prob, values.size(), |
|
| 143 |
&rowlist.front(), &indices.front(), &values.front()); |
|
| 144 |
|
|
| 145 |
return i; |
|
| 146 |
} |
|
| 111 | 147 |
|
| 112 | 148 |
void CplexBase::_eraseCol(int i) {
|
| 113 | 149 |
CPXdelcols(cplexEnv(), _prob, i, i); |
| 114 | 150 |
} |
| 115 | 151 |
|
| 116 | 152 |
void CplexBase::_eraseRow(int i) {
|
| 117 | 153 |
CPXdelrows(cplexEnv(), _prob, i, i); |
| 118 | 154 |
} |
| 119 | 155 |
|
| 120 | 156 |
void CplexBase::_eraseColId(int i) {
|
| 121 | 157 |
cols.eraseIndex(i); |
| 122 | 158 |
cols.shiftIndices(i); |
| 123 | 159 |
} |
| 124 | 160 |
void CplexBase::_eraseRowId(int i) {
|
| 125 | 161 |
rows.eraseIndex(i); |
| 126 | 162 |
rows.shiftIndices(i); |
| 127 | 163 |
} |
| 128 | 164 |
|
| 129 | 165 |
void CplexBase::_getColName(int col, std::string &name) const {
|
| 130 | 166 |
int size; |
| 131 | 167 |
CPXgetcolname(cplexEnv(), _prob, 0, 0, 0, &size, col, col); |
| 132 | 168 |
if (size == 0) {
|
| 133 | 169 |
name.clear(); |
| 134 | 170 |
return; |
| 135 | 171 |
} |
| 136 | 172 |
|
| 137 | 173 |
size *= -1; |
| 138 | 174 |
std::vector<char> buf(size); |
| 139 | 175 |
char *cname; |
| 140 | 176 |
int tmp; |
| 141 | 177 |
CPXgetcolname(cplexEnv(), _prob, &cname, &buf.front(), size, |
| 142 | 178 |
&tmp, col, col); |
| 143 | 179 |
name = cname; |
| 144 | 180 |
} |
| 145 | 181 |
|
| 146 | 182 |
void CplexBase::_setColName(int col, const std::string &name) {
|
| 147 | 183 |
char *cname; |
| 148 | 184 |
cname = const_cast<char*>(name.c_str()); |
| 149 | 185 |
CPXchgcolname(cplexEnv(), _prob, 1, &col, &cname); |
| 150 | 186 |
} |
| 151 | 187 |
|
| 152 | 188 |
int CplexBase::_colByName(const std::string& name) const {
|
| 153 | 189 |
int index; |
| 154 | 190 |
if (CPXgetcolindex(cplexEnv(), _prob, |
| 155 | 191 |
const_cast<char*>(name.c_str()), &index) == 0) {
|
| 156 | 192 |
return index; |
| 157 | 193 |
} |
| 158 | 194 |
return -1; |
| 159 | 195 |
} |
| 160 | 196 |
|
| 161 | 197 |
void CplexBase::_getRowName(int row, std::string &name) const {
|
| 162 | 198 |
int size; |
| 163 | 199 |
CPXgetrowname(cplexEnv(), _prob, 0, 0, 0, &size, row, row); |
| 164 | 200 |
if (size == 0) {
|
| 165 | 201 |
name.clear(); |
| 166 | 202 |
return; |
| 167 | 203 |
} |
| 168 | 204 |
|
| 169 | 205 |
size *= -1; |
| 170 | 206 |
std::vector<char> buf(size); |
| 171 | 207 |
char *cname; |
| 172 | 208 |
int tmp; |
| 173 | 209 |
CPXgetrowname(cplexEnv(), _prob, &cname, &buf.front(), size, |
| 174 | 210 |
&tmp, row, row); |
| 175 | 211 |
name = cname; |
| 176 | 212 |
} |
| 177 | 213 |
|
| 178 | 214 |
void CplexBase::_setRowName(int row, const std::string &name) {
|
| 179 | 215 |
char *cname; |
| 180 | 216 |
cname = const_cast<char*>(name.c_str()); |
| 181 | 217 |
CPXchgrowname(cplexEnv(), _prob, 1, &row, &cname); |
| 182 | 218 |
} |
| 183 | 219 |
|
| 184 | 220 |
int CplexBase::_rowByName(const std::string& name) const {
|
| 185 | 221 |
int index; |
| 186 | 222 |
if (CPXgetrowindex(cplexEnv(), _prob, |
| 187 | 223 |
const_cast<char*>(name.c_str()), &index) == 0) {
|
| 188 | 224 |
return index; |
| 189 | 225 |
} |
| 190 | 226 |
return -1; |
| 191 | 227 |
} |
| 192 | 228 |
|
| 193 | 229 |
void CplexBase::_setRowCoeffs(int i, ExprIterator b, |
| 194 | 230 |
ExprIterator e) |
| 195 | 231 |
{
|
| 196 | 232 |
std::vector<int> indices; |
| 197 | 233 |
std::vector<int> rowlist; |
| 198 | 234 |
std::vector<Value> values; |
| 199 | 235 |
|
| 200 | 236 |
for(ExprIterator it=b; it!=e; ++it) {
|
| 201 | 237 |
indices.push_back(it->first); |
| 202 | 238 |
values.push_back(it->second); |
| 203 | 239 |
rowlist.push_back(i); |
| 204 | 240 |
} |
| 205 | 241 |
|
| 206 | 242 |
CPXchgcoeflist(cplexEnv(), _prob, values.size(), |
| 207 | 243 |
&rowlist.front(), &indices.front(), &values.front()); |
| 208 | 244 |
} |
| 209 | 245 |
|
| 210 | 246 |
void CplexBase::_getRowCoeffs(int i, InsertIterator b) const {
|
| 211 | 247 |
int tmp1, tmp2, tmp3, length; |
| 212 | 248 |
CPXgetrows(cplexEnv(), _prob, &tmp1, &tmp2, 0, 0, 0, &length, i, i); |
| 213 | 249 |
|
| 214 | 250 |
length = -length; |
| 215 | 251 |
std::vector<int> indices(length); |
| 216 | 252 |
std::vector<double> values(length); |
| 217 | 253 |
|
| 218 | 254 |
CPXgetrows(cplexEnv(), _prob, &tmp1, &tmp2, |
| 219 | 255 |
&indices.front(), &values.front(), |
| 220 | 256 |
length, &tmp3, i, i); |
| 221 | 257 |
|
| 222 | 258 |
for (int i = 0; i < length; ++i) {
|
| 223 | 259 |
*b = std::make_pair(indices[i], values[i]); |
| 224 | 260 |
++b; |
| 225 | 261 |
} |
| 226 | 262 |
} |
| 227 | 263 |
|
| 228 | 264 |
void CplexBase::_setColCoeffs(int i, ExprIterator b, ExprIterator e) {
|
| 229 | 265 |
std::vector<int> indices; |
| 230 | 266 |
std::vector<int> collist; |
| 231 | 267 |
std::vector<Value> values; |
| 232 | 268 |
|
| 233 | 269 |
for(ExprIterator it=b; it!=e; ++it) {
|
| 234 | 270 |
indices.push_back(it->first); |
| 235 | 271 |
values.push_back(it->second); |
| 236 | 272 |
collist.push_back(i); |
| 237 | 273 |
} |
| 238 | 274 |
|
| 239 | 275 |
CPXchgcoeflist(cplexEnv(), _prob, values.size(), |
| 240 | 276 |
&indices.front(), &collist.front(), &values.front()); |
| 241 | 277 |
} |
| 242 | 278 |
|
| 243 | 279 |
void CplexBase::_getColCoeffs(int i, InsertIterator b) const {
|
| 244 | 280 |
|
| 245 | 281 |
int tmp1, tmp2, tmp3, length; |
| 246 | 282 |
CPXgetcols(cplexEnv(), _prob, &tmp1, &tmp2, 0, 0, 0, &length, i, i); |
| 247 | 283 |
|
| 248 | 284 |
length = -length; |
| 249 | 285 |
std::vector<int> indices(length); |
| 250 | 286 |
std::vector<double> values(length); |
| 251 | 287 |
|
| 252 | 288 |
CPXgetcols(cplexEnv(), _prob, &tmp1, &tmp2, |
| 253 | 289 |
&indices.front(), &values.front(), |
| 254 | 290 |
length, &tmp3, i, i); |
| 255 | 291 |
|
| 256 | 292 |
for (int i = 0; i < length; ++i) {
|
| 257 | 293 |
*b = std::make_pair(indices[i], values[i]); |
| 258 | 294 |
++b; |
| 259 | 295 |
} |
| 260 | 296 |
|
| 261 | 297 |
} |
| 262 | 298 |
|
| 263 | 299 |
void CplexBase::_setCoeff(int row, int col, Value value) {
|
| 264 | 300 |
CPXchgcoef(cplexEnv(), _prob, row, col, value); |
| 265 | 301 |
} |
| 266 | 302 |
|
| 267 | 303 |
CplexBase::Value CplexBase::_getCoeff(int row, int col) const {
|
| 268 | 304 |
CplexBase::Value value; |
| 269 | 305 |
CPXgetcoef(cplexEnv(), _prob, row, col, &value); |
| 270 | 306 |
return value; |
| 271 | 307 |
} |
| 272 | 308 |
|
| 273 | 309 |
void CplexBase::_setColLowerBound(int i, Value value) {
|
| 274 | 310 |
const char s = 'L'; |
| 275 | 311 |
CPXchgbds(cplexEnv(), _prob, 1, &i, &s, &value); |
| 276 | 312 |
} |
| 277 | 313 |
|
| 278 | 314 |
CplexBase::Value CplexBase::_getColLowerBound(int i) const {
|
| 279 | 315 |
CplexBase::Value res; |
| 280 | 316 |
CPXgetlb(cplexEnv(), _prob, &res, i, i); |
| 281 | 317 |
return res <= -CPX_INFBOUND ? -INF : res; |
| 282 | 318 |
} |
| 283 | 319 |
|
| 284 | 320 |
void CplexBase::_setColUpperBound(int i, Value value) |
| 285 | 321 |
{
|
| 286 | 322 |
const char s = 'U'; |
| 287 | 323 |
CPXchgbds(cplexEnv(), _prob, 1, &i, &s, &value); |
| 288 | 324 |
} |
| 289 | 325 |
|
| 290 | 326 |
CplexBase::Value CplexBase::_getColUpperBound(int i) const {
|
| 291 | 327 |
CplexBase::Value res; |
| 292 | 328 |
CPXgetub(cplexEnv(), _prob, &res, i, i); |
| 293 | 329 |
return res >= CPX_INFBOUND ? INF : res; |
| 294 | 330 |
} |
| 295 | 331 |
|
| 296 | 332 |
CplexBase::Value CplexBase::_getRowLowerBound(int i) const {
|
| 297 | 333 |
char s; |
| 298 | 334 |
CPXgetsense(cplexEnv(), _prob, &s, i, i); |
| 299 | 335 |
CplexBase::Value res; |
| 300 | 336 |
|
| 301 | 337 |
switch (s) {
|
| 302 | 338 |
case 'G': |
| 303 | 339 |
case 'R': |
| 304 | 340 |
case 'E': |
| 305 | 341 |
CPXgetrhs(cplexEnv(), _prob, &res, i, i); |
| 306 | 342 |
return res <= -CPX_INFBOUND ? -INF : res; |
| 307 | 343 |
default: |
| 308 | 344 |
return -INF; |
| 309 | 345 |
} |
| 310 | 346 |
} |
| 311 | 347 |
|
| 312 | 348 |
CplexBase::Value CplexBase::_getRowUpperBound(int i) const {
|
| 313 | 349 |
char s; |
| 314 | 350 |
CPXgetsense(cplexEnv(), _prob, &s, i, i); |
| 315 | 351 |
CplexBase::Value res; |
| 316 | 352 |
|
| 317 | 353 |
switch (s) {
|
| 318 | 354 |
case 'L': |
| 319 | 355 |
case 'E': |
| 320 | 356 |
CPXgetrhs(cplexEnv(), _prob, &res, i, i); |
| 321 | 357 |
return res >= CPX_INFBOUND ? INF : res; |
| 322 | 358 |
case 'R': |
| 323 | 359 |
CPXgetrhs(cplexEnv(), _prob, &res, i, i); |
| 324 | 360 |
{
|
| 325 | 361 |
double rng; |
| 326 | 362 |
CPXgetrngval(cplexEnv(), _prob, &rng, i, i); |
| 327 | 363 |
res += rng; |
| 328 | 364 |
} |
| 329 | 365 |
return res >= CPX_INFBOUND ? INF : res; |
| 330 | 366 |
default: |
| 331 | 367 |
return INF; |
| 332 | 368 |
} |
| 333 | 369 |
} |
| 334 | 370 |
|
| 335 | 371 |
//This is easier to implement |
| 336 | 372 |
void CplexBase::_set_row_bounds(int i, Value lb, Value ub) {
|
| 337 | 373 |
if (lb == -INF) {
|
| 338 | 374 |
const char s = 'L'; |
| 339 | 375 |
CPXchgsense(cplexEnv(), _prob, 1, &i, &s); |
| 340 | 376 |
CPXchgrhs(cplexEnv(), _prob, 1, &i, &ub); |
| 341 | 377 |
} else if (ub == INF) {
|
| 342 | 378 |
const char s = 'G'; |
| 343 | 379 |
CPXchgsense(cplexEnv(), _prob, 1, &i, &s); |
| 344 | 380 |
CPXchgrhs(cplexEnv(), _prob, 1, &i, &lb); |
| 345 | 381 |
} else if (lb == ub){
|
| 346 | 382 |
const char s = 'E'; |
| 347 | 383 |
CPXchgsense(cplexEnv(), _prob, 1, &i, &s); |
| 348 | 384 |
CPXchgrhs(cplexEnv(), _prob, 1, &i, &lb); |
| 349 | 385 |
} else {
|
| 350 | 386 |
const char s = 'R'; |
| 351 | 387 |
CPXchgsense(cplexEnv(), _prob, 1, &i, &s); |
| 352 | 388 |
CPXchgrhs(cplexEnv(), _prob, 1, &i, &lb); |
| 353 | 389 |
double len = ub - lb; |
| 354 | 390 |
CPXchgrngval(cplexEnv(), _prob, 1, &i, &len); |
| 355 | 391 |
} |
| 356 | 392 |
} |
| 357 | 393 |
|
| 358 | 394 |
void CplexBase::_setRowLowerBound(int i, Value lb) |
| 359 | 395 |
{
|
| 360 | 396 |
LEMON_ASSERT(lb != INF, "Invalid bound"); |
| 361 | 397 |
_set_row_bounds(i, lb, CplexBase::_getRowUpperBound(i)); |
| 362 | 398 |
} |
| 363 | 399 |
|
| 364 | 400 |
void CplexBase::_setRowUpperBound(int i, Value ub) |
| 365 | 401 |
{
|
| 366 | 402 |
|
| 367 | 403 |
LEMON_ASSERT(ub != -INF, "Invalid bound"); |
| 368 | 404 |
_set_row_bounds(i, CplexBase::_getRowLowerBound(i), ub); |
| 369 | 405 |
} |
| 370 | 406 |
|
| 371 | 407 |
void CplexBase::_setObjCoeffs(ExprIterator b, ExprIterator e) |
| 372 | 408 |
{
|
| 373 | 409 |
std::vector<int> indices; |
| 374 | 410 |
std::vector<Value> values; |
| 375 | 411 |
for(ExprIterator it=b; it!=e; ++it) {
|
| 376 | 412 |
indices.push_back(it->first); |
| 377 | 413 |
values.push_back(it->second); |
| 378 | 414 |
} |
| 379 | 415 |
CPXchgobj(cplexEnv(), _prob, values.size(), |
| 380 | 416 |
&indices.front(), &values.front()); |
| 381 | 417 |
|
| 382 | 418 |
} |
| 383 | 419 |
|
| 384 | 420 |
void CplexBase::_getObjCoeffs(InsertIterator b) const |
| 385 | 421 |
{
|
| 386 | 422 |
int num = CPXgetnumcols(cplexEnv(), _prob); |
| 387 | 423 |
std::vector<Value> x(num); |
| 388 | 424 |
|
| 389 | 425 |
CPXgetobj(cplexEnv(), _prob, &x.front(), 0, num - 1); |
| 390 | 426 |
for (int i = 0; i < num; ++i) {
|
| 391 | 427 |
if (x[i] != 0.0) {
|
| 392 | 428 |
*b = std::make_pair(i, x[i]); |
| 393 | 429 |
++b; |
| 394 | 430 |
} |
| 395 | 431 |
} |
| 396 | 432 |
} |
| 397 | 433 |
|
| 398 | 434 |
void CplexBase::_setObjCoeff(int i, Value obj_coef) |
| 399 | 435 |
{
|
| 400 | 436 |
CPXchgobj(cplexEnv(), _prob, 1, &i, &obj_coef); |
| 401 | 437 |
} |
| 402 | 438 |
|
| 403 | 439 |
CplexBase::Value CplexBase::_getObjCoeff(int i) const |
| 404 | 440 |
{
|
| 405 | 441 |
Value x; |
| 406 | 442 |
CPXgetobj(cplexEnv(), _prob, &x, i, i); |
| 407 | 443 |
return x; |
| 408 | 444 |
} |
| 409 | 445 |
|
| 410 | 446 |
void CplexBase::_setSense(CplexBase::Sense sense) {
|
| 411 | 447 |
switch (sense) {
|
| 412 | 448 |
case MIN: |
| 413 | 449 |
CPXchgobjsen(cplexEnv(), _prob, CPX_MIN); |
| 414 | 450 |
break; |
| 415 | 451 |
case MAX: |
| 416 | 452 |
CPXchgobjsen(cplexEnv(), _prob, CPX_MAX); |
| 417 | 453 |
break; |
| 418 | 454 |
} |
| 419 | 455 |
} |
| 420 | 456 |
|
| 421 | 457 |
CplexBase::Sense CplexBase::_getSense() const {
|
| 422 | 458 |
switch (CPXgetobjsen(cplexEnv(), _prob)) {
|
| 423 | 459 |
case CPX_MIN: |
| 424 | 460 |
return MIN; |
| 425 | 461 |
case CPX_MAX: |
| 426 | 462 |
return MAX; |
| 427 | 463 |
default: |
| 428 | 464 |
LEMON_ASSERT(false, "Invalid sense"); |
| 429 | 465 |
return CplexBase::Sense(); |
| 430 | 466 |
} |
| 431 | 467 |
} |
| 432 | 468 |
|
| 433 | 469 |
void CplexBase::_clear() {
|
| 434 | 470 |
CPXfreeprob(cplexEnv(),&_prob); |
| 435 | 471 |
int status; |
| 436 | 472 |
_prob = CPXcreateprob(cplexEnv(), &status, "Cplex problem"); |
| 437 | 473 |
rows.clear(); |
| 438 | 474 |
cols.clear(); |
| 439 | 475 |
} |
| 440 | 476 |
|
| 477 |
void CplexBase::_messageLevel(MessageLevel level) {
|
|
| 478 |
switch (level) {
|
|
| 479 |
case MESSAGE_NOTHING: |
|
| 480 |
_message_enabled = false; |
|
| 481 |
break; |
|
| 482 |
case MESSAGE_ERROR: |
|
| 483 |
case MESSAGE_WARNING: |
|
| 484 |
case MESSAGE_NORMAL: |
|
| 485 |
case MESSAGE_VERBOSE: |
|
| 486 |
_message_enabled = true; |
|
| 487 |
break; |
|
| 488 |
} |
|
| 489 |
} |
|
| 490 |
|
|
| 491 |
void CplexBase::_applyMessageLevel() {
|
|
| 492 |
CPXsetintparam(cplexEnv(), CPX_PARAM_SCRIND, |
|
| 493 |
_message_enabled ? CPX_ON : CPX_OFF); |
|
| 494 |
} |
|
| 495 |
|
|
| 441 | 496 |
// CplexLp members |
| 442 | 497 |
|
| 443 | 498 |
CplexLp::CplexLp() |
| 444 |
: LpBase(), |
|
| 499 |
: LpBase(), LpSolver(), CplexBase() {}
|
|
| 445 | 500 |
|
| 446 | 501 |
CplexLp::CplexLp(const CplexEnv& env) |
| 447 |
: LpBase(), |
|
| 502 |
: LpBase(), LpSolver(), CplexBase(env) {}
|
|
| 448 | 503 |
|
| 449 | 504 |
CplexLp::CplexLp(const CplexLp& other) |
| 450 |
: LpBase(), |
|
| 505 |
: LpBase(), LpSolver(), CplexBase(other) {}
|
|
| 451 | 506 |
|
| 452 | 507 |
CplexLp::~CplexLp() {}
|
| 453 | 508 |
|
| 454 |
CplexLp* CplexLp::_newSolver() const { return new CplexLp; }
|
|
| 455 |
CplexLp* CplexLp::_cloneSolver() const {return new CplexLp(*this); }
|
|
| 509 |
CplexLp* CplexLp::newSolver() const { return new CplexLp; }
|
|
| 510 |
CplexLp* CplexLp::cloneSolver() const {return new CplexLp(*this); }
|
|
| 456 | 511 |
|
| 457 | 512 |
const char* CplexLp::_solverName() const { return "CplexLp"; }
|
| 458 | 513 |
|
| 459 | 514 |
void CplexLp::_clear_temporals() {
|
| 460 | 515 |
_col_status.clear(); |
| 461 | 516 |
_row_status.clear(); |
| 462 | 517 |
_primal_ray.clear(); |
| 463 | 518 |
_dual_ray.clear(); |
| 464 | 519 |
} |
| 465 | 520 |
|
| 466 | 521 |
// The routine returns zero unless an error occurred during the |
| 467 | 522 |
// optimization. Examples of errors include exhausting available |
| 468 | 523 |
// memory (CPXERR_NO_MEMORY) or encountering invalid data in the |
| 469 | 524 |
// CPLEX problem object (CPXERR_NO_PROBLEM). Exceeding a |
| 470 | 525 |
// user-specified CPLEX limit, or proving the model infeasible or |
| 471 | 526 |
// unbounded, are not considered errors. Note that a zero return |
| 472 | 527 |
// value does not necessarily mean that a solution exists. Use query |
| 473 | 528 |
// routines CPXsolninfo, CPXgetstat, and CPXsolution to obtain |
| 474 | 529 |
// further information about the status of the optimization. |
| 475 | 530 |
CplexLp::SolveExitStatus CplexLp::convertStatus(int status) {
|
| 476 | 531 |
#if CPX_VERSION >= 800 |
| 477 | 532 |
if (status == 0) {
|
| 478 | 533 |
switch (CPXgetstat(cplexEnv(), _prob)) {
|
| 479 | 534 |
case CPX_STAT_OPTIMAL: |
| 480 | 535 |
case CPX_STAT_INFEASIBLE: |
| 481 | 536 |
case CPX_STAT_UNBOUNDED: |
| 482 | 537 |
return SOLVED; |
| 483 | 538 |
default: |
| 484 | 539 |
return UNSOLVED; |
| 485 | 540 |
} |
| 486 | 541 |
} else {
|
| 487 | 542 |
return UNSOLVED; |
| 488 | 543 |
} |
| 489 | 544 |
#else |
| 490 | 545 |
if (status == 0) {
|
| 491 | 546 |
//We want to exclude some cases |
| 492 | 547 |
switch (CPXgetstat(cplexEnv(), _prob)) {
|
| 493 | 548 |
case CPX_OBJ_LIM: |
| 494 | 549 |
case CPX_IT_LIM_FEAS: |
| 495 | 550 |
case CPX_IT_LIM_INFEAS: |
| 496 | 551 |
case CPX_TIME_LIM_FEAS: |
| 497 | 552 |
case CPX_TIME_LIM_INFEAS: |
| 498 | 553 |
return UNSOLVED; |
| 499 | 554 |
default: |
| 500 | 555 |
return SOLVED; |
| 501 | 556 |
} |
| 502 | 557 |
} else {
|
| 503 | 558 |
return UNSOLVED; |
| 504 | 559 |
} |
| 505 | 560 |
#endif |
| 506 | 561 |
} |
| 507 | 562 |
|
| 508 | 563 |
CplexLp::SolveExitStatus CplexLp::_solve() {
|
| 509 | 564 |
_clear_temporals(); |
| 565 |
_applyMessageLevel(); |
|
| 510 | 566 |
return convertStatus(CPXlpopt(cplexEnv(), _prob)); |
| 511 | 567 |
} |
| 512 | 568 |
|
| 513 | 569 |
CplexLp::SolveExitStatus CplexLp::solvePrimal() {
|
| 514 | 570 |
_clear_temporals(); |
| 571 |
_applyMessageLevel(); |
|
| 515 | 572 |
return convertStatus(CPXprimopt(cplexEnv(), _prob)); |
| 516 | 573 |
} |
| 517 | 574 |
|
| 518 | 575 |
CplexLp::SolveExitStatus CplexLp::solveDual() {
|
| 519 | 576 |
_clear_temporals(); |
| 577 |
_applyMessageLevel(); |
|
| 520 | 578 |
return convertStatus(CPXdualopt(cplexEnv(), _prob)); |
| 521 | 579 |
} |
| 522 | 580 |
|
| 523 | 581 |
CplexLp::SolveExitStatus CplexLp::solveBarrier() {
|
| 524 | 582 |
_clear_temporals(); |
| 583 |
_applyMessageLevel(); |
|
| 525 | 584 |
return convertStatus(CPXbaropt(cplexEnv(), _prob)); |
| 526 | 585 |
} |
| 527 | 586 |
|
| 528 | 587 |
CplexLp::Value CplexLp::_getPrimal(int i) const {
|
| 529 | 588 |
Value x; |
| 530 | 589 |
CPXgetx(cplexEnv(), _prob, &x, i, i); |
| 531 | 590 |
return x; |
| 532 | 591 |
} |
| 533 | 592 |
|
| 534 | 593 |
CplexLp::Value CplexLp::_getDual(int i) const {
|
| 535 | 594 |
Value y; |
| 536 | 595 |
CPXgetpi(cplexEnv(), _prob, &y, i, i); |
| 537 | 596 |
return y; |
| 538 | 597 |
} |
| 539 | 598 |
|
| 540 | 599 |
CplexLp::Value CplexLp::_getPrimalValue() const {
|
| 541 | 600 |
Value objval; |
| 542 | 601 |
CPXgetobjval(cplexEnv(), _prob, &objval); |
| 543 | 602 |
return objval; |
| 544 | 603 |
} |
| 545 | 604 |
|
| 546 | 605 |
CplexLp::VarStatus CplexLp::_getColStatus(int i) const {
|
| 547 | 606 |
if (_col_status.empty()) {
|
| 548 | 607 |
_col_status.resize(CPXgetnumcols(cplexEnv(), _prob)); |
| 549 | 608 |
CPXgetbase(cplexEnv(), _prob, &_col_status.front(), 0); |
| 550 | 609 |
} |
| 551 | 610 |
switch (_col_status[i]) {
|
| 552 | 611 |
case CPX_BASIC: |
| 553 | 612 |
return BASIC; |
| 554 | 613 |
case CPX_FREE_SUPER: |
| 555 | 614 |
return FREE; |
| 556 | 615 |
case CPX_AT_LOWER: |
| 557 | 616 |
return LOWER; |
| 558 | 617 |
case CPX_AT_UPPER: |
| 559 | 618 |
return UPPER; |
| 560 | 619 |
default: |
| 561 | 620 |
LEMON_ASSERT(false, "Wrong column status"); |
| 562 | 621 |
return CplexLp::VarStatus(); |
| 563 | 622 |
} |
| 564 | 623 |
} |
| 565 | 624 |
|
| 566 | 625 |
CplexLp::VarStatus CplexLp::_getRowStatus(int i) const {
|
| 567 | 626 |
if (_row_status.empty()) {
|
| 568 | 627 |
_row_status.resize(CPXgetnumrows(cplexEnv(), _prob)); |
| 569 | 628 |
CPXgetbase(cplexEnv(), _prob, 0, &_row_status.front()); |
| 570 | 629 |
} |
| 571 | 630 |
switch (_row_status[i]) {
|
| 572 | 631 |
case CPX_BASIC: |
| 573 | 632 |
return BASIC; |
| 574 | 633 |
case CPX_AT_LOWER: |
| 575 | 634 |
{
|
| 576 | 635 |
char s; |
| 577 | 636 |
CPXgetsense(cplexEnv(), _prob, &s, i, i); |
| 578 | 637 |
return s != 'L' ? LOWER : UPPER; |
| 579 | 638 |
} |
| 580 | 639 |
case CPX_AT_UPPER: |
| 581 | 640 |
return UPPER; |
| 582 | 641 |
default: |
| 583 | 642 |
LEMON_ASSERT(false, "Wrong row status"); |
| 584 | 643 |
return CplexLp::VarStatus(); |
| 585 | 644 |
} |
| 586 | 645 |
} |
| 587 | 646 |
|
| 588 | 647 |
CplexLp::Value CplexLp::_getPrimalRay(int i) const {
|
| 589 | 648 |
if (_primal_ray.empty()) {
|
| 590 | 649 |
_primal_ray.resize(CPXgetnumcols(cplexEnv(), _prob)); |
| 591 | 650 |
CPXgetray(cplexEnv(), _prob, &_primal_ray.front()); |
| 592 | 651 |
} |
| 593 | 652 |
return _primal_ray[i]; |
| 594 | 653 |
} |
| 595 | 654 |
|
| 596 | 655 |
CplexLp::Value CplexLp::_getDualRay(int i) const {
|
| 597 | 656 |
if (_dual_ray.empty()) {
|
| 598 | 657 |
|
| 599 | 658 |
} |
| 600 | 659 |
return _dual_ray[i]; |
| 601 | 660 |
} |
| 602 | 661 |
|
| 603 |
// |
|
| 662 |
// Cplex 7.0 status values |
|
| 604 | 663 |
// This table lists the statuses, returned by the CPXgetstat() |
| 605 | 664 |
// routine, for solutions to LP problems or mixed integer problems. If |
| 606 | 665 |
// no solution exists, the return value is zero. |
| 607 | 666 |
|
| 608 | 667 |
// For Simplex, Barrier |
| 609 | 668 |
// 1 CPX_OPTIMAL |
| 610 | 669 |
// Optimal solution found |
| 611 | 670 |
// 2 CPX_INFEASIBLE |
| 612 | 671 |
// Problem infeasible |
| 613 | 672 |
// 3 CPX_UNBOUNDED |
| 614 | 673 |
// Problem unbounded |
| 615 | 674 |
// 4 CPX_OBJ_LIM |
| 616 | 675 |
// Objective limit exceeded in Phase II |
| 617 | 676 |
// 5 CPX_IT_LIM_FEAS |
| 618 | 677 |
// Iteration limit exceeded in Phase II |
| 619 | 678 |
// 6 CPX_IT_LIM_INFEAS |
| 620 | 679 |
// Iteration limit exceeded in Phase I |
| 621 | 680 |
// 7 CPX_TIME_LIM_FEAS |
| 622 | 681 |
// Time limit exceeded in Phase II |
| 623 | 682 |
// 8 CPX_TIME_LIM_INFEAS |
| 624 | 683 |
// Time limit exceeded in Phase I |
| 625 | 684 |
// 9 CPX_NUM_BEST_FEAS |
| 626 | 685 |
// Problem non-optimal, singularities in Phase II |
| 627 | 686 |
// 10 CPX_NUM_BEST_INFEAS |
| 628 | 687 |
// Problem non-optimal, singularities in Phase I |
| 629 | 688 |
// 11 CPX_OPTIMAL_INFEAS |
| 630 | 689 |
// Optimal solution found, unscaled infeasibilities |
| 631 | 690 |
// 12 CPX_ABORT_FEAS |
| 632 | 691 |
// Aborted in Phase II |
| 633 | 692 |
// 13 CPX_ABORT_INFEAS |
| 634 | 693 |
// Aborted in Phase I |
| 635 | 694 |
// 14 CPX_ABORT_DUAL_INFEAS |
| 636 | 695 |
// Aborted in barrier, dual infeasible |
| 637 | 696 |
// 15 CPX_ABORT_PRIM_INFEAS |
| 638 | 697 |
// Aborted in barrier, primal infeasible |
| 639 | 698 |
// 16 CPX_ABORT_PRIM_DUAL_INFEAS |
| 640 | 699 |
// Aborted in barrier, primal and dual infeasible |
| 641 | 700 |
// 17 CPX_ABORT_PRIM_DUAL_FEAS |
| 642 | 701 |
// Aborted in barrier, primal and dual feasible |
| 643 | 702 |
// 18 CPX_ABORT_CROSSOVER |
| 644 | 703 |
// Aborted in crossover |
| 645 | 704 |
// 19 CPX_INForUNBD |
| 646 | 705 |
// Infeasible or unbounded |
| 647 | 706 |
// 20 CPX_PIVOT |
| 648 | 707 |
// User pivot used |
| 649 | 708 |
// |
| 650 |
// |
|
| 709 |
// Pending return values |
|
| 651 | 710 |
// ??case CPX_ABORT_DUAL_INFEAS |
| 652 | 711 |
// ??case CPX_ABORT_CROSSOVER |
| 653 | 712 |
// ??case CPX_INForUNBD |
| 654 | 713 |
// ??case CPX_PIVOT |
| 655 | 714 |
|
| 656 | 715 |
//Some more interesting stuff: |
| 657 | 716 |
|
| 658 | 717 |
// CPX_PARAM_PROBMETHOD 1062 int LPMETHOD |
| 659 | 718 |
// 0 Automatic |
| 660 | 719 |
// 1 Primal Simplex |
| 661 | 720 |
// 2 Dual Simplex |
| 662 | 721 |
// 3 Network Simplex |
| 663 | 722 |
// 4 Standard Barrier |
| 664 | 723 |
// Default: 0 |
| 665 | 724 |
// Description: Method for linear optimization. |
| 666 | 725 |
// Determines which algorithm is used when CPXlpopt() (or "optimize" |
| 667 | 726 |
// in the Interactive Optimizer) is called. Currently the behavior of |
| 668 | 727 |
// the "Automatic" setting is that CPLEX simply invokes the dual |
| 669 | 728 |
// simplex method, but this capability may be expanded in the future |
| 670 | 729 |
// so that CPLEX chooses the method based on problem characteristics |
| 671 | 730 |
#if CPX_VERSION < 900 |
| 672 | 731 |
void statusSwitch(CPXENVptr cplexEnv(),int& stat){
|
| 673 | 732 |
int lpmethod; |
| 674 | 733 |
CPXgetintparam (cplexEnv(),CPX_PARAM_PROBMETHOD,&lpmethod); |
| 675 | 734 |
if (lpmethod==2){
|
| 676 | 735 |
if (stat==CPX_UNBOUNDED){
|
| 677 | 736 |
stat=CPX_INFEASIBLE; |
| 678 | 737 |
} |
| 679 | 738 |
else{
|
| 680 | 739 |
if (stat==CPX_INFEASIBLE) |
| 681 | 740 |
stat=CPX_UNBOUNDED; |
| 682 | 741 |
} |
| 683 | 742 |
} |
| 684 | 743 |
} |
| 685 | 744 |
#else |
| 686 | 745 |
void statusSwitch(CPXENVptr,int&){}
|
| 687 | 746 |
#endif |
| 688 | 747 |
|
| 689 | 748 |
CplexLp::ProblemType CplexLp::_getPrimalType() const {
|
| 690 | 749 |
// Unboundedness not treated well: the following is from cplex 9.0 doc |
| 691 | 750 |
// About Unboundedness |
| 692 | 751 |
|
| 693 | 752 |
// The treatment of models that are unbounded involves a few |
| 694 | 753 |
// subtleties. Specifically, a declaration of unboundedness means that |
| 695 | 754 |
// ILOG CPLEX has determined that the model has an unbounded |
| 696 | 755 |
// ray. Given any feasible solution x with objective z, a multiple of |
| 697 | 756 |
// the unbounded ray can be added to x to give a feasible solution |
| 698 | 757 |
// with objective z-1 (or z+1 for maximization models). Thus, if a |
| 699 | 758 |
// feasible solution exists, then the optimal objective is |
| 700 | 759 |
// unbounded. Note that ILOG CPLEX has not necessarily concluded that |
| 701 | 760 |
// a feasible solution exists. Users can call the routine CPXsolninfo |
| 702 | 761 |
// to determine whether ILOG CPLEX has also concluded that the model |
| 703 | 762 |
// has a feasible solution. |
| 704 | 763 |
|
| 705 | 764 |
int stat = CPXgetstat(cplexEnv(), _prob); |
| 706 | 765 |
#if CPX_VERSION >= 800 |
| 707 | 766 |
switch (stat) |
| 708 | 767 |
{
|
| 709 | 768 |
case CPX_STAT_OPTIMAL: |
| 710 | 769 |
return OPTIMAL; |
| 711 | 770 |
case CPX_STAT_UNBOUNDED: |
| 712 | 771 |
return UNBOUNDED; |
| 713 | 772 |
case CPX_STAT_INFEASIBLE: |
| 714 | 773 |
return INFEASIBLE; |
| 715 | 774 |
default: |
| 716 | 775 |
return UNDEFINED; |
| 717 | 776 |
} |
| 718 | 777 |
#else |
| 719 | 778 |
statusSwitch(cplexEnv(),stat); |
| 720 | 779 |
//CPXgetstat(cplexEnv(), _prob); |
| 721 |
//printf("A primal status: %d, CPX_OPTIMAL=%d \n",stat,CPX_OPTIMAL);
|
|
| 722 | 780 |
switch (stat) {
|
| 723 | 781 |
case 0: |
| 724 | 782 |
return UNDEFINED; //Undefined |
| 725 | 783 |
case CPX_OPTIMAL://Optimal |
| 726 | 784 |
return OPTIMAL; |
| 727 | 785 |
case CPX_UNBOUNDED://Unbounded |
| 728 | 786 |
return INFEASIBLE;//In case of dual simplex |
| 729 | 787 |
//return UNBOUNDED; |
| 730 | 788 |
case CPX_INFEASIBLE://Infeasible |
| 731 | 789 |
// case CPX_IT_LIM_INFEAS: |
| 732 | 790 |
// case CPX_TIME_LIM_INFEAS: |
| 733 | 791 |
// case CPX_NUM_BEST_INFEAS: |
| 734 | 792 |
// case CPX_OPTIMAL_INFEAS: |
| 735 | 793 |
// case CPX_ABORT_INFEAS: |
| 736 | 794 |
// case CPX_ABORT_PRIM_INFEAS: |
| 737 | 795 |
// case CPX_ABORT_PRIM_DUAL_INFEAS: |
| 738 | 796 |
return UNBOUNDED;//In case of dual simplex |
| 739 | 797 |
//return INFEASIBLE; |
| 740 | 798 |
// case CPX_OBJ_LIM: |
| 741 | 799 |
// case CPX_IT_LIM_FEAS: |
| 742 | 800 |
// case CPX_TIME_LIM_FEAS: |
| 743 | 801 |
// case CPX_NUM_BEST_FEAS: |
| 744 | 802 |
// case CPX_ABORT_FEAS: |
| 745 | 803 |
// case CPX_ABORT_PRIM_DUAL_FEAS: |
| 746 | 804 |
// return FEASIBLE; |
| 747 | 805 |
default: |
| 748 | 806 |
return UNDEFINED; //Everything else comes here |
| 749 | 807 |
//FIXME error |
| 750 | 808 |
} |
| 751 | 809 |
#endif |
| 752 | 810 |
} |
| 753 | 811 |
|
| 754 |
//9.0 |
|
| 812 |
// Cplex 9.0 status values |
|
| 755 | 813 |
// CPX_STAT_ABORT_DUAL_OBJ_LIM |
| 756 | 814 |
// CPX_STAT_ABORT_IT_LIM |
| 757 | 815 |
// CPX_STAT_ABORT_OBJ_LIM |
| 758 | 816 |
// CPX_STAT_ABORT_PRIM_OBJ_LIM |
| 759 | 817 |
// CPX_STAT_ABORT_TIME_LIM |
| 760 | 818 |
// CPX_STAT_ABORT_USER |
| 761 | 819 |
// CPX_STAT_FEASIBLE_RELAXED |
| 762 | 820 |
// CPX_STAT_INFEASIBLE |
| 763 | 821 |
// CPX_STAT_INForUNBD |
| 764 | 822 |
// CPX_STAT_NUM_BEST |
| 765 | 823 |
// CPX_STAT_OPTIMAL |
| 766 | 824 |
// CPX_STAT_OPTIMAL_FACE_UNBOUNDED |
| 767 | 825 |
// CPX_STAT_OPTIMAL_INFEAS |
| 768 | 826 |
// CPX_STAT_OPTIMAL_RELAXED |
| 769 | 827 |
// CPX_STAT_UNBOUNDED |
| 770 | 828 |
|
| 771 | 829 |
CplexLp::ProblemType CplexLp::_getDualType() const {
|
| 772 | 830 |
int stat = CPXgetstat(cplexEnv(), _prob); |
| 773 | 831 |
#if CPX_VERSION >= 800 |
| 774 | 832 |
switch (stat) {
|
| 775 | 833 |
case CPX_STAT_OPTIMAL: |
| 776 | 834 |
return OPTIMAL; |
| 777 | 835 |
case CPX_STAT_UNBOUNDED: |
| 778 | 836 |
return INFEASIBLE; |
| 779 | 837 |
default: |
| 780 | 838 |
return UNDEFINED; |
| 781 | 839 |
} |
| 782 | 840 |
#else |
| 783 | 841 |
statusSwitch(cplexEnv(),stat); |
| 784 | 842 |
switch (stat) {
|
| 785 | 843 |
case 0: |
| 786 | 844 |
return UNDEFINED; //Undefined |
| 787 | 845 |
case CPX_OPTIMAL://Optimal |
| 788 | 846 |
return OPTIMAL; |
| 789 | 847 |
case CPX_UNBOUNDED: |
| 790 | 848 |
return INFEASIBLE; |
| 791 | 849 |
default: |
| 792 | 850 |
return UNDEFINED; //Everything else comes here |
| 793 | 851 |
//FIXME error |
| 794 | 852 |
} |
| 795 | 853 |
#endif |
| 796 | 854 |
} |
| 797 | 855 |
|
| 798 | 856 |
// CplexMip members |
| 799 | 857 |
|
| 800 | 858 |
CplexMip::CplexMip() |
| 801 |
: LpBase(), |
|
| 859 |
: LpBase(), MipSolver(), CplexBase() {
|
|
| 802 | 860 |
|
| 803 | 861 |
#if CPX_VERSION < 800 |
| 804 | 862 |
CPXchgprobtype(cplexEnv(), _prob, CPXPROB_MIP); |
| 805 | 863 |
#else |
| 806 | 864 |
CPXchgprobtype(cplexEnv(), _prob, CPXPROB_MILP); |
| 807 | 865 |
#endif |
| 808 | 866 |
} |
| 809 | 867 |
|
| 810 | 868 |
CplexMip::CplexMip(const CplexEnv& env) |
| 811 |
: LpBase(), |
|
| 869 |
: LpBase(), MipSolver(), CplexBase(env) {
|
|
| 812 | 870 |
|
| 813 | 871 |
#if CPX_VERSION < 800 |
| 814 | 872 |
CPXchgprobtype(cplexEnv(), _prob, CPXPROB_MIP); |
| 815 | 873 |
#else |
| 816 | 874 |
CPXchgprobtype(cplexEnv(), _prob, CPXPROB_MILP); |
| 817 | 875 |
#endif |
| 818 | 876 |
|
| 819 | 877 |
} |
| 820 | 878 |
|
| 821 | 879 |
CplexMip::CplexMip(const CplexMip& other) |
| 822 |
: LpBase(), |
|
| 880 |
: LpBase(), MipSolver(), CplexBase(other) {}
|
|
| 823 | 881 |
|
| 824 | 882 |
CplexMip::~CplexMip() {}
|
| 825 | 883 |
|
| 826 |
CplexMip* CplexMip::_newSolver() const { return new CplexMip; }
|
|
| 827 |
CplexMip* CplexMip::_cloneSolver() const {return new CplexMip(*this); }
|
|
| 884 |
CplexMip* CplexMip::newSolver() const { return new CplexMip; }
|
|
| 885 |
CplexMip* CplexMip::cloneSolver() const {return new CplexMip(*this); }
|
|
| 828 | 886 |
|
| 829 | 887 |
const char* CplexMip::_solverName() const { return "CplexMip"; }
|
| 830 | 888 |
|
| 831 | 889 |
void CplexMip::_setColType(int i, CplexMip::ColTypes col_type) {
|
| 832 | 890 |
|
| 833 | 891 |
// Note If a variable is to be changed to binary, a call to CPXchgbds |
| 834 | 892 |
// should also be made to change the bounds to 0 and 1. |
| 835 | 893 |
|
| 836 | 894 |
switch (col_type){
|
| 837 | 895 |
case INTEGER: {
|
| 838 | 896 |
const char t = 'I'; |
| 839 | 897 |
CPXchgctype (cplexEnv(), _prob, 1, &i, &t); |
| 840 | 898 |
} break; |
| 841 | 899 |
case REAL: {
|
| 842 | 900 |
const char t = 'C'; |
| 843 | 901 |
CPXchgctype (cplexEnv(), _prob, 1, &i, &t); |
| 844 | 902 |
} break; |
| 845 | 903 |
default: |
| 846 | 904 |
break; |
| 847 | 905 |
} |
| 848 | 906 |
} |
| 849 | 907 |
|
| 850 | 908 |
CplexMip::ColTypes CplexMip::_getColType(int i) const {
|
| 851 | 909 |
char t; |
| 852 | 910 |
CPXgetctype (cplexEnv(), _prob, &t, i, i); |
| 853 | 911 |
switch (t) {
|
| 854 | 912 |
case 'I': |
| 855 | 913 |
return INTEGER; |
| 856 | 914 |
case 'C': |
| 857 | 915 |
return REAL; |
| 858 | 916 |
default: |
| 859 | 917 |
LEMON_ASSERT(false, "Invalid column type"); |
| 860 | 918 |
return ColTypes(); |
| 861 | 919 |
} |
| 862 | 920 |
|
| 863 | 921 |
} |
| 864 | 922 |
|
| 865 | 923 |
CplexMip::SolveExitStatus CplexMip::_solve() {
|
| 866 | 924 |
int status; |
| 925 |
_applyMessageLevel(); |
|
| 867 | 926 |
status = CPXmipopt (cplexEnv(), _prob); |
| 868 | 927 |
if (status==0) |
| 869 | 928 |
return SOLVED; |
| 870 | 929 |
else |
| 871 | 930 |
return UNSOLVED; |
| 872 | 931 |
|
| 873 | 932 |
} |
| 874 | 933 |
|
| 875 | 934 |
|
| 876 | 935 |
CplexMip::ProblemType CplexMip::_getType() const {
|
| 877 | 936 |
|
| 878 | 937 |
int stat = CPXgetstat(cplexEnv(), _prob); |
| 879 | 938 |
|
| 880 | 939 |
//Fortunately, MIP statuses did not change for cplex 8.0 |
| 881 | 940 |
switch (stat) {
|
| 882 | 941 |
case CPXMIP_OPTIMAL: |
| 883 | 942 |
// Optimal integer solution has been found. |
| 884 | 943 |
case CPXMIP_OPTIMAL_TOL: |
| 885 | 944 |
// Optimal soluton with the tolerance defined by epgap or epagap has |
| 886 | 945 |
// been found. |
| 887 | 946 |
return OPTIMAL; |
| 888 | 947 |
//This also exists in later issues |
| 889 | 948 |
// case CPXMIP_UNBOUNDED: |
| 890 | 949 |
//return UNBOUNDED; |
| 891 | 950 |
case CPXMIP_INFEASIBLE: |
| 892 | 951 |
return INFEASIBLE; |
| 893 | 952 |
default: |
| 894 | 953 |
return UNDEFINED; |
| 895 | 954 |
} |
| 896 | 955 |
//Unboundedness not treated well: the following is from cplex 9.0 doc |
| 897 | 956 |
// About Unboundedness |
| 898 | 957 |
|
| 899 | 958 |
// The treatment of models that are unbounded involves a few |
| 900 | 959 |
// subtleties. Specifically, a declaration of unboundedness means that |
| 901 | 960 |
// ILOG CPLEX has determined that the model has an unbounded |
| 902 | 961 |
// ray. Given any feasible solution x with objective z, a multiple of |
| 903 | 962 |
// the unbounded ray can be added to x to give a feasible solution |
| 904 | 963 |
// with objective z-1 (or z+1 for maximization models). Thus, if a |
| 905 | 964 |
// feasible solution exists, then the optimal objective is |
| 906 | 965 |
// unbounded. Note that ILOG CPLEX has not necessarily concluded that |
| 907 | 966 |
// a feasible solution exists. Users can call the routine CPXsolninfo |
| 908 | 967 |
// to determine whether ILOG CPLEX has also concluded that the model |
| 909 | 968 |
// has a feasible solution. |
| 910 | 969 |
} |
| 911 | 970 |
|
| 912 | 971 |
CplexMip::Value CplexMip::_getSol(int i) const {
|
| 913 | 972 |
Value x; |
| 914 | 973 |
CPXgetmipx(cplexEnv(), _prob, &x, i, i); |
| 915 | 974 |
return x; |
| 916 | 975 |
} |
| 917 | 976 |
|
| 918 | 977 |
CplexMip::Value CplexMip::_getSolValue() const {
|
| 919 | 978 |
Value objval; |
| 920 | 979 |
CPXgetmipobjval(cplexEnv(), _prob, &objval); |
| 921 | 980 |
return objval; |
| 922 | 981 |
} |
| 923 | 982 |
|
| 924 | 983 |
} //namespace lemon |
| 925 | 984 |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 |
* Copyright (C) 2003- |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_CPLEX_H |
| 20 | 20 |
#define LEMON_CPLEX_H |
| 21 | 21 |
|
| 22 | 22 |
///\file |
| 23 | 23 |
///\brief Header of the LEMON-CPLEX lp solver interface. |
| 24 | 24 |
|
| 25 | 25 |
#include <lemon/lp_base.h> |
| 26 | 26 |
|
| 27 | 27 |
struct cpxenv; |
| 28 | 28 |
struct cpxlp; |
| 29 | 29 |
|
| 30 | 30 |
namespace lemon {
|
| 31 | 31 |
|
| 32 | 32 |
/// \brief Reference counted wrapper around cpxenv pointer |
| 33 | 33 |
/// |
| 34 | 34 |
/// The cplex uses environment object which is responsible for |
| 35 | 35 |
/// checking the proper license usage. This class provides a simple |
| 36 | 36 |
/// interface for share the environment object between different |
| 37 | 37 |
/// problems. |
| 38 | 38 |
class CplexEnv {
|
| 39 | 39 |
friend class CplexBase; |
| 40 | 40 |
private: |
| 41 | 41 |
cpxenv* _env; |
| 42 | 42 |
mutable int* _cnt; |
| 43 | 43 |
|
| 44 | 44 |
public: |
| 45 | 45 |
|
| 46 | 46 |
/// \brief This exception is thrown when the license check is not |
| 47 | 47 |
/// sufficient |
| 48 | 48 |
class LicenseError : public Exception {
|
| 49 | 49 |
friend class CplexEnv; |
| 50 | 50 |
private: |
| 51 | 51 |
|
| 52 | 52 |
LicenseError(int status); |
| 53 | 53 |
char _message[510]; |
| 54 | 54 |
|
| 55 | 55 |
public: |
| 56 | 56 |
|
| 57 | 57 |
/// The short error message |
| 58 | 58 |
virtual const char* what() const throw() {
|
| 59 | 59 |
return _message; |
| 60 | 60 |
} |
| 61 | 61 |
}; |
| 62 | 62 |
|
| 63 | 63 |
/// Constructor |
| 64 | 64 |
CplexEnv(); |
| 65 | 65 |
/// Shallow copy constructor |
| 66 | 66 |
CplexEnv(const CplexEnv&); |
| 67 | 67 |
/// Shallow assignement |
| 68 | 68 |
CplexEnv& operator=(const CplexEnv&); |
| 69 | 69 |
/// Destructor |
| 70 | 70 |
virtual ~CplexEnv(); |
| 71 | 71 |
|
| 72 | 72 |
protected: |
| 73 | 73 |
|
| 74 | 74 |
cpxenv* cplexEnv() { return _env; }
|
| 75 | 75 |
const cpxenv* cplexEnv() const { return _env; }
|
| 76 | 76 |
}; |
| 77 | 77 |
|
| 78 | 78 |
/// \brief Base interface for the CPLEX LP and MIP solver |
| 79 | 79 |
/// |
| 80 | 80 |
/// This class implements the common interface of the CPLEX LP and |
| 81 |
/// MIP solvers. |
|
| 81 |
/// MIP solvers. |
|
| 82 | 82 |
/// \ingroup lp_group |
| 83 | 83 |
class CplexBase : virtual public LpBase {
|
| 84 | 84 |
protected: |
| 85 | 85 |
|
| 86 | 86 |
CplexEnv _env; |
| 87 | 87 |
cpxlp* _prob; |
| 88 | 88 |
|
| 89 | 89 |
CplexBase(); |
| 90 | 90 |
CplexBase(const CplexEnv&); |
| 91 | 91 |
CplexBase(const CplexBase &); |
| 92 | 92 |
virtual ~CplexBase(); |
| 93 | 93 |
|
| 94 | 94 |
virtual int _addCol(); |
| 95 | 95 |
virtual int _addRow(); |
| 96 |
virtual int _addRow(Value l, ExprIterator b, ExprIterator e, Value u); |
|
| 96 | 97 |
|
| 97 | 98 |
virtual void _eraseCol(int i); |
| 98 | 99 |
virtual void _eraseRow(int i); |
| 99 | 100 |
|
| 100 | 101 |
virtual void _eraseColId(int i); |
| 101 | 102 |
virtual void _eraseRowId(int i); |
| 102 | 103 |
|
| 103 | 104 |
virtual void _getColName(int col, std::string& name) const; |
| 104 | 105 |
virtual void _setColName(int col, const std::string& name); |
| 105 | 106 |
virtual int _colByName(const std::string& name) const; |
| 106 | 107 |
|
| 107 | 108 |
virtual void _getRowName(int row, std::string& name) const; |
| 108 | 109 |
virtual void _setRowName(int row, const std::string& name); |
| 109 | 110 |
virtual int _rowByName(const std::string& name) const; |
| 110 | 111 |
|
| 111 | 112 |
virtual void _setRowCoeffs(int i, ExprIterator b, ExprIterator e); |
| 112 | 113 |
virtual void _getRowCoeffs(int i, InsertIterator b) const; |
| 113 | 114 |
|
| 114 | 115 |
virtual void _setColCoeffs(int i, ExprIterator b, ExprIterator e); |
| 115 | 116 |
virtual void _getColCoeffs(int i, InsertIterator b) const; |
| 116 | 117 |
|
| 117 | 118 |
virtual void _setCoeff(int row, int col, Value value); |
| 118 | 119 |
virtual Value _getCoeff(int row, int col) const; |
| 119 | 120 |
|
| 120 | 121 |
virtual void _setColLowerBound(int i, Value value); |
| 121 | 122 |
virtual Value _getColLowerBound(int i) const; |
| 122 | 123 |
|
| 123 | 124 |
virtual void _setColUpperBound(int i, Value value); |
| 124 | 125 |
virtual Value _getColUpperBound(int i) const; |
| 125 | 126 |
|
| 126 | 127 |
private: |
| 127 | 128 |
void _set_row_bounds(int i, Value lb, Value ub); |
| 128 | 129 |
protected: |
| 129 | 130 |
|
| 130 | 131 |
virtual void _setRowLowerBound(int i, Value value); |
| 131 | 132 |
virtual Value _getRowLowerBound(int i) const; |
| 132 | 133 |
|
| 133 | 134 |
virtual void _setRowUpperBound(int i, Value value); |
| 134 | 135 |
virtual Value _getRowUpperBound(int i) const; |
| 135 | 136 |
|
| 136 | 137 |
virtual void _setObjCoeffs(ExprIterator b, ExprIterator e); |
| 137 | 138 |
virtual void _getObjCoeffs(InsertIterator b) const; |
| 138 | 139 |
|
| 139 | 140 |
virtual void _setObjCoeff(int i, Value obj_coef); |
| 140 | 141 |
virtual Value _getObjCoeff(int i) const; |
| 141 | 142 |
|
| 142 | 143 |
virtual void _setSense(Sense sense); |
| 143 | 144 |
virtual Sense _getSense() const; |
| 144 | 145 |
|
| 145 | 146 |
virtual void _clear(); |
| 146 | 147 |
|
| 148 |
virtual void _messageLevel(MessageLevel level); |
|
| 149 |
void _applyMessageLevel(); |
|
| 150 |
|
|
| 151 |
bool _message_enabled; |
|
| 152 |
|
|
| 147 | 153 |
public: |
| 148 | 154 |
|
| 149 | 155 |
/// Returns the used \c CplexEnv instance |
| 150 | 156 |
const CplexEnv& env() const { return _env; }
|
| 157 |
|
|
| 158 |
/// \brief Returns the const cpxenv pointer |
|
| 151 | 159 |
/// |
| 160 |
/// \note The cpxenv might be destructed with the solver. |
|
| 152 | 161 |
const cpxenv* cplexEnv() const { return _env.cplexEnv(); }
|
| 153 | 162 |
|
| 163 |
/// \brief Returns the const cpxenv pointer |
|
| 164 |
/// |
|
| 165 |
/// \note The cpxenv might be destructed with the solver. |
|
| 166 |
cpxenv* cplexEnv() { return _env.cplexEnv(); }
|
|
| 167 |
|
|
| 168 |
/// Returns the cplex problem object |
|
| 154 | 169 |
cpxlp* cplexLp() { return _prob; }
|
| 170 |
/// Returns the cplex problem object |
|
| 155 | 171 |
const cpxlp* cplexLp() const { return _prob; }
|
| 156 | 172 |
|
| 157 | 173 |
}; |
| 158 | 174 |
|
| 159 | 175 |
/// \brief Interface for the CPLEX LP solver |
| 160 | 176 |
/// |
| 161 | 177 |
/// This class implements an interface for the CPLEX LP solver. |
| 162 | 178 |
///\ingroup lp_group |
| 163 |
class CplexLp : public |
|
| 179 |
class CplexLp : public LpSolver, public CplexBase {
|
|
| 164 | 180 |
public: |
| 165 | 181 |
/// \e |
| 166 | 182 |
CplexLp(); |
| 167 | 183 |
/// \e |
| 168 | 184 |
CplexLp(const CplexEnv&); |
| 169 | 185 |
/// \e |
| 170 | 186 |
CplexLp(const CplexLp&); |
| 171 | 187 |
/// \e |
| 172 | 188 |
virtual ~CplexLp(); |
| 173 | 189 |
|
| 190 |
/// \e |
|
| 191 |
virtual CplexLp* cloneSolver() const; |
|
| 192 |
/// \e |
|
| 193 |
virtual CplexLp* newSolver() const; |
|
| 194 |
|
|
| 174 | 195 |
private: |
| 175 | 196 |
|
| 176 | 197 |
// these values cannot retrieved element by element |
| 177 | 198 |
mutable std::vector<int> _col_status; |
| 178 | 199 |
mutable std::vector<int> _row_status; |
| 179 | 200 |
|
| 180 | 201 |
mutable std::vector<Value> _primal_ray; |
| 181 | 202 |
mutable std::vector<Value> _dual_ray; |
| 182 | 203 |
|
| 183 | 204 |
void _clear_temporals(); |
| 184 | 205 |
|
| 185 | 206 |
SolveExitStatus convertStatus(int status); |
| 186 | 207 |
|
| 187 | 208 |
protected: |
| 188 | 209 |
|
| 189 |
virtual CplexLp* _cloneSolver() const; |
|
| 190 |
virtual CplexLp* _newSolver() const; |
|
| 191 |
|
|
| 192 | 210 |
virtual const char* _solverName() const; |
| 193 | 211 |
|
| 194 | 212 |
virtual SolveExitStatus _solve(); |
| 195 | 213 |
virtual Value _getPrimal(int i) const; |
| 196 | 214 |
virtual Value _getDual(int i) const; |
| 197 | 215 |
virtual Value _getPrimalValue() const; |
| 198 | 216 |
|
| 199 | 217 |
virtual VarStatus _getColStatus(int i) const; |
| 200 | 218 |
virtual VarStatus _getRowStatus(int i) const; |
| 201 | 219 |
|
| 202 | 220 |
virtual Value _getPrimalRay(int i) const; |
| 203 | 221 |
virtual Value _getDualRay(int i) const; |
| 204 | 222 |
|
| 205 | 223 |
virtual ProblemType _getPrimalType() const; |
| 206 | 224 |
virtual ProblemType _getDualType() const; |
| 207 | 225 |
|
| 208 | 226 |
public: |
| 209 | 227 |
|
| 210 | 228 |
/// Solve with primal simplex method |
| 211 | 229 |
SolveExitStatus solvePrimal(); |
| 212 | 230 |
|
| 213 | 231 |
/// Solve with dual simplex method |
| 214 | 232 |
SolveExitStatus solveDual(); |
| 215 | 233 |
|
| 216 | 234 |
/// Solve with barrier method |
| 217 | 235 |
SolveExitStatus solveBarrier(); |
| 218 | 236 |
|
| 219 | 237 |
}; |
| 220 | 238 |
|
| 221 | 239 |
/// \brief Interface for the CPLEX MIP solver |
| 222 | 240 |
/// |
| 223 | 241 |
/// This class implements an interface for the CPLEX MIP solver. |
| 224 | 242 |
///\ingroup lp_group |
| 225 |
class CplexMip : public |
|
| 243 |
class CplexMip : public MipSolver, public CplexBase {
|
|
| 226 | 244 |
public: |
| 227 | 245 |
/// \e |
| 228 | 246 |
CplexMip(); |
| 229 | 247 |
/// \e |
| 230 | 248 |
CplexMip(const CplexEnv&); |
| 231 | 249 |
/// \e |
| 232 | 250 |
CplexMip(const CplexMip&); |
| 233 | 251 |
/// \e |
| 234 | 252 |
virtual ~CplexMip(); |
| 235 | 253 |
|
| 254 |
/// \e |
|
| 255 |
virtual CplexMip* cloneSolver() const; |
|
| 256 |
/// \e |
|
| 257 |
virtual CplexMip* newSolver() const; |
|
| 258 |
|
|
| 236 | 259 |
protected: |
| 237 | 260 |
|
| 238 |
virtual CplexMip* _cloneSolver() const; |
|
| 239 |
virtual CplexMip* _newSolver() const; |
|
| 240 | 261 |
|
| 241 | 262 |
virtual const char* _solverName() const; |
| 242 | 263 |
|
| 243 | 264 |
virtual ColTypes _getColType(int col) const; |
| 244 | 265 |
virtual void _setColType(int col, ColTypes col_type); |
| 245 | 266 |
|
| 246 | 267 |
virtual SolveExitStatus _solve(); |
| 247 | 268 |
virtual ProblemType _getType() const; |
| 248 | 269 |
virtual Value _getSol(int i) const; |
| 249 | 270 |
virtual Value _getSolValue() const; |
| 250 | 271 |
|
| 251 | 272 |
}; |
| 252 | 273 |
|
| 253 | 274 |
} //END OF NAMESPACE LEMON |
| 254 | 275 |
|
| 255 | 276 |
#endif //LEMON_CPLEX_H |
| 256 | 277 |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_DFS_H |
| 20 | 20 |
#define LEMON_DFS_H |
| 21 | 21 |
|
| 22 | 22 |
///\ingroup search |
| 23 | 23 |
///\file |
| 24 | 24 |
///\brief DFS algorithm. |
| 25 | 25 |
|
| 26 | 26 |
#include <lemon/list_graph.h> |
| 27 | 27 |
#include <lemon/bits/path_dump.h> |
| 28 | 28 |
#include <lemon/core.h> |
| 29 | 29 |
#include <lemon/error.h> |
| 30 | 30 |
#include <lemon/maps.h> |
| 31 | 31 |
#include <lemon/path.h> |
| 32 | 32 |
|
| 33 | 33 |
namespace lemon {
|
| 34 | 34 |
|
| 35 | 35 |
///Default traits class of Dfs class. |
| 36 | 36 |
|
| 37 | 37 |
///Default traits class of Dfs class. |
| 38 | 38 |
///\tparam GR Digraph type. |
| 39 | 39 |
template<class GR> |
| 40 | 40 |
struct DfsDefaultTraits |
| 41 | 41 |
{
|
| 42 | 42 |
///The type of the digraph the algorithm runs on. |
| 43 | 43 |
typedef GR Digraph; |
| 44 | 44 |
|
| 45 | 45 |
///\brief The type of the map that stores the predecessor |
| 46 | 46 |
///arcs of the %DFS paths. |
| 47 | 47 |
/// |
| 48 | 48 |
///The type of the map that stores the predecessor |
| 49 | 49 |
///arcs of the %DFS paths. |
| 50 |
///It must |
|
| 50 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 51 | 51 |
typedef typename Digraph::template NodeMap<typename Digraph::Arc> PredMap; |
| 52 |
///Instantiates a PredMap. |
|
| 52 |
///Instantiates a \c PredMap. |
|
| 53 | 53 |
|
| 54 |
///This function instantiates a PredMap. |
|
| 54 |
///This function instantiates a \ref PredMap. |
|
| 55 | 55 |
///\param g is the digraph, to which we would like to define the |
| 56 |
///PredMap. |
|
| 56 |
///\ref PredMap. |
|
| 57 | 57 |
static PredMap *createPredMap(const Digraph &g) |
| 58 | 58 |
{
|
| 59 | 59 |
return new PredMap(g); |
| 60 | 60 |
} |
| 61 | 61 |
|
| 62 | 62 |
///The type of the map that indicates which nodes are processed. |
| 63 | 63 |
|
| 64 | 64 |
///The type of the map that indicates which nodes are processed. |
| 65 |
///It must |
|
| 65 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 66 |
///By default it is a NullMap. |
|
| 66 | 67 |
typedef NullMap<typename Digraph::Node,bool> ProcessedMap; |
| 67 |
///Instantiates a ProcessedMap. |
|
| 68 |
///Instantiates a \c ProcessedMap. |
|
| 68 | 69 |
|
| 69 |
///This function instantiates a ProcessedMap. |
|
| 70 |
///This function instantiates a \ref ProcessedMap. |
|
| 70 | 71 |
///\param g is the digraph, to which |
| 71 |
///we would like to define the ProcessedMap |
|
| 72 |
///we would like to define the \ref ProcessedMap. |
|
| 72 | 73 |
#ifdef DOXYGEN |
| 73 | 74 |
static ProcessedMap *createProcessedMap(const Digraph &g) |
| 74 | 75 |
#else |
| 75 | 76 |
static ProcessedMap *createProcessedMap(const Digraph &) |
| 76 | 77 |
#endif |
| 77 | 78 |
{
|
| 78 | 79 |
return new ProcessedMap(); |
| 79 | 80 |
} |
| 80 | 81 |
|
| 81 | 82 |
///The type of the map that indicates which nodes are reached. |
| 82 | 83 |
|
| 83 | 84 |
///The type of the map that indicates which nodes are reached. |
| 84 |
///It must |
|
| 85 |
///It must conform to the \ref concepts::ReadWriteMap "ReadWriteMap" concept. |
|
| 85 | 86 |
typedef typename Digraph::template NodeMap<bool> ReachedMap; |
| 86 |
///Instantiates a ReachedMap. |
|
| 87 |
///Instantiates a \c ReachedMap. |
|
| 87 | 88 |
|
| 88 |
///This function instantiates a ReachedMap. |
|
| 89 |
///This function instantiates a \ref ReachedMap. |
|
| 89 | 90 |
///\param g is the digraph, to which |
| 90 |
///we would like to define the ReachedMap. |
|
| 91 |
///we would like to define the \ref ReachedMap. |
|
| 91 | 92 |
static ReachedMap *createReachedMap(const Digraph &g) |
| 92 | 93 |
{
|
| 93 | 94 |
return new ReachedMap(g); |
| 94 | 95 |
} |
| 95 | 96 |
|
| 96 | 97 |
///The type of the map that stores the distances of the nodes. |
| 97 | 98 |
|
| 98 | 99 |
///The type of the map that stores the distances of the nodes. |
| 99 |
///It must |
|
| 100 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 100 | 101 |
typedef typename Digraph::template NodeMap<int> DistMap; |
| 101 |
///Instantiates a DistMap. |
|
| 102 |
///Instantiates a \c DistMap. |
|
| 102 | 103 |
|
| 103 |
///This function instantiates a DistMap. |
|
| 104 |
///This function instantiates a \ref DistMap. |
|
| 104 | 105 |
///\param g is the digraph, to which we would like to define the |
| 105 |
///DistMap. |
|
| 106 |
///\ref DistMap. |
|
| 106 | 107 |
static DistMap *createDistMap(const Digraph &g) |
| 107 | 108 |
{
|
| 108 | 109 |
return new DistMap(g); |
| 109 | 110 |
} |
| 110 | 111 |
}; |
| 111 | 112 |
|
| 112 | 113 |
///%DFS algorithm class. |
| 113 | 114 |
|
| 114 | 115 |
///\ingroup search |
| 115 | 116 |
///This class provides an efficient implementation of the %DFS algorithm. |
| 116 | 117 |
/// |
| 117 | 118 |
///There is also a \ref dfs() "function-type interface" for the DFS |
| 118 | 119 |
///algorithm, which is convenient in the simplier cases and it can be |
| 119 | 120 |
///used easier. |
| 120 | 121 |
/// |
| 121 | 122 |
///\tparam GR The type of the digraph the algorithm runs on. |
| 122 | 123 |
///The default type is \ref ListDigraph. |
| 123 | 124 |
#ifdef DOXYGEN |
| 124 | 125 |
template <typename GR, |
| 125 | 126 |
typename TR> |
| 126 | 127 |
#else |
| 127 | 128 |
template <typename GR=ListDigraph, |
| 128 | 129 |
typename TR=DfsDefaultTraits<GR> > |
| 129 | 130 |
#endif |
| 130 | 131 |
class Dfs {
|
| 131 | 132 |
public: |
| 132 | 133 |
|
| 133 | 134 |
///The type of the digraph the algorithm runs on. |
| 134 | 135 |
typedef typename TR::Digraph Digraph; |
| 135 | 136 |
|
| 136 | 137 |
///\brief The type of the map that stores the predecessor arcs of the |
| 137 | 138 |
///DFS paths. |
| 138 | 139 |
typedef typename TR::PredMap PredMap; |
| 139 | 140 |
///The type of the map that stores the distances of the nodes. |
| 140 | 141 |
typedef typename TR::DistMap DistMap; |
| 141 | 142 |
///The type of the map that indicates which nodes are reached. |
| 142 | 143 |
typedef typename TR::ReachedMap ReachedMap; |
| 143 | 144 |
///The type of the map that indicates which nodes are processed. |
| 144 | 145 |
typedef typename TR::ProcessedMap ProcessedMap; |
| 145 | 146 |
///The type of the paths. |
| 146 | 147 |
typedef PredMapPath<Digraph, PredMap> Path; |
| 147 | 148 |
|
| 148 | 149 |
///The \ref DfsDefaultTraits "traits class" of the algorithm. |
| 149 | 150 |
typedef TR Traits; |
| 150 | 151 |
|
| 151 | 152 |
private: |
| 152 | 153 |
|
| 153 | 154 |
typedef typename Digraph::Node Node; |
| 154 | 155 |
typedef typename Digraph::NodeIt NodeIt; |
| 155 | 156 |
typedef typename Digraph::Arc Arc; |
| 156 | 157 |
typedef typename Digraph::OutArcIt OutArcIt; |
| 157 | 158 |
|
| 158 | 159 |
//Pointer to the underlying digraph. |
| 159 | 160 |
const Digraph *G; |
| 160 | 161 |
//Pointer to the map of predecessor arcs. |
| 161 | 162 |
PredMap *_pred; |
| 162 | 163 |
//Indicates if _pred is locally allocated (true) or not. |
| 163 | 164 |
bool local_pred; |
| 164 | 165 |
//Pointer to the map of distances. |
| 165 | 166 |
DistMap *_dist; |
| 166 | 167 |
//Indicates if _dist is locally allocated (true) or not. |
| 167 | 168 |
bool local_dist; |
| 168 | 169 |
//Pointer to the map of reached status of the nodes. |
| 169 | 170 |
ReachedMap *_reached; |
| 170 | 171 |
//Indicates if _reached is locally allocated (true) or not. |
| 171 | 172 |
bool local_reached; |
| 172 | 173 |
//Pointer to the map of processed status of the nodes. |
| 173 | 174 |
ProcessedMap *_processed; |
| 174 | 175 |
//Indicates if _processed is locally allocated (true) or not. |
| 175 | 176 |
bool local_processed; |
| 176 | 177 |
|
| 177 | 178 |
std::vector<typename Digraph::OutArcIt> _stack; |
| 178 | 179 |
int _stack_head; |
| 179 | 180 |
|
| 180 | 181 |
//Creates the maps if necessary. |
| 181 | 182 |
void create_maps() |
| 182 | 183 |
{
|
| 183 | 184 |
if(!_pred) {
|
| 184 | 185 |
local_pred = true; |
| 185 | 186 |
_pred = Traits::createPredMap(*G); |
| 186 | 187 |
} |
| 187 | 188 |
if(!_dist) {
|
| 188 | 189 |
local_dist = true; |
| 189 | 190 |
_dist = Traits::createDistMap(*G); |
| 190 | 191 |
} |
| 191 | 192 |
if(!_reached) {
|
| 192 | 193 |
local_reached = true; |
| 193 | 194 |
_reached = Traits::createReachedMap(*G); |
| 194 | 195 |
} |
| 195 | 196 |
if(!_processed) {
|
| 196 | 197 |
local_processed = true; |
| 197 | 198 |
_processed = Traits::createProcessedMap(*G); |
| 198 | 199 |
} |
| 199 | 200 |
} |
| 200 | 201 |
|
| 201 | 202 |
protected: |
| 202 | 203 |
|
| 203 | 204 |
Dfs() {}
|
| 204 | 205 |
|
| 205 | 206 |
public: |
| 206 | 207 |
|
| 207 | 208 |
typedef Dfs Create; |
| 208 | 209 |
|
| 209 |
///\name Named |
|
| 210 |
///\name Named Template Parameters |
|
| 210 | 211 |
|
| 211 | 212 |
///@{
|
| 212 | 213 |
|
| 213 | 214 |
template <class T> |
| 214 | 215 |
struct SetPredMapTraits : public Traits {
|
| 215 | 216 |
typedef T PredMap; |
| 216 | 217 |
static PredMap *createPredMap(const Digraph &) |
| 217 | 218 |
{
|
| 218 | 219 |
LEMON_ASSERT(false, "PredMap is not initialized"); |
| 219 | 220 |
return 0; // ignore warnings |
| 220 | 221 |
} |
| 221 | 222 |
}; |
| 222 | 223 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 223 |
///PredMap type. |
|
| 224 |
///\c PredMap type. |
|
| 224 | 225 |
/// |
| 225 | 226 |
///\ref named-templ-param "Named parameter" for setting |
| 226 |
///PredMap type. |
|
| 227 |
///It must meet the \ref concepts::WriteMap "WriteMap" concept. |
|
| 227 |
///\c PredMap type. |
|
| 228 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 228 | 229 |
template <class T> |
| 229 | 230 |
struct SetPredMap : public Dfs<Digraph, SetPredMapTraits<T> > {
|
| 230 | 231 |
typedef Dfs<Digraph, SetPredMapTraits<T> > Create; |
| 231 | 232 |
}; |
| 232 | 233 |
|
| 233 | 234 |
template <class T> |
| 234 | 235 |
struct SetDistMapTraits : public Traits {
|
| 235 | 236 |
typedef T DistMap; |
| 236 | 237 |
static DistMap *createDistMap(const Digraph &) |
| 237 | 238 |
{
|
| 238 | 239 |
LEMON_ASSERT(false, "DistMap is not initialized"); |
| 239 | 240 |
return 0; // ignore warnings |
| 240 | 241 |
} |
| 241 | 242 |
}; |
| 242 | 243 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 243 |
///DistMap type. |
|
| 244 |
///\c DistMap type. |
|
| 244 | 245 |
/// |
| 245 | 246 |
///\ref named-templ-param "Named parameter" for setting |
| 246 |
///DistMap type. |
|
| 247 |
///It must meet the \ref concepts::WriteMap "WriteMap" concept. |
|
| 247 |
///\c DistMap type. |
|
| 248 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 248 | 249 |
template <class T> |
| 249 | 250 |
struct SetDistMap : public Dfs< Digraph, SetDistMapTraits<T> > {
|
| 250 | 251 |
typedef Dfs<Digraph, SetDistMapTraits<T> > Create; |
| 251 | 252 |
}; |
| 252 | 253 |
|
| 253 | 254 |
template <class T> |
| 254 | 255 |
struct SetReachedMapTraits : public Traits {
|
| 255 | 256 |
typedef T ReachedMap; |
| 256 | 257 |
static ReachedMap *createReachedMap(const Digraph &) |
| 257 | 258 |
{
|
| 258 | 259 |
LEMON_ASSERT(false, "ReachedMap is not initialized"); |
| 259 | 260 |
return 0; // ignore warnings |
| 260 | 261 |
} |
| 261 | 262 |
}; |
| 262 | 263 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 263 |
///ReachedMap type. |
|
| 264 |
///\c ReachedMap type. |
|
| 264 | 265 |
/// |
| 265 | 266 |
///\ref named-templ-param "Named parameter" for setting |
| 266 |
///ReachedMap type. |
|
| 267 |
///It must meet the \ref concepts::ReadWriteMap "ReadWriteMap" concept. |
|
| 267 |
///\c ReachedMap type. |
|
| 268 |
///It must conform to the \ref concepts::ReadWriteMap "ReadWriteMap" concept. |
|
| 268 | 269 |
template <class T> |
| 269 | 270 |
struct SetReachedMap : public Dfs< Digraph, SetReachedMapTraits<T> > {
|
| 270 | 271 |
typedef Dfs< Digraph, SetReachedMapTraits<T> > Create; |
| 271 | 272 |
}; |
| 272 | 273 |
|
| 273 | 274 |
template <class T> |
| 274 | 275 |
struct SetProcessedMapTraits : public Traits {
|
| 275 | 276 |
typedef T ProcessedMap; |
| 276 | 277 |
static ProcessedMap *createProcessedMap(const Digraph &) |
| 277 | 278 |
{
|
| 278 | 279 |
LEMON_ASSERT(false, "ProcessedMap is not initialized"); |
| 279 | 280 |
return 0; // ignore warnings |
| 280 | 281 |
} |
| 281 | 282 |
}; |
| 282 | 283 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 283 |
///ProcessedMap type. |
|
| 284 |
///\c ProcessedMap type. |
|
| 284 | 285 |
/// |
| 285 | 286 |
///\ref named-templ-param "Named parameter" for setting |
| 286 |
///ProcessedMap type. |
|
| 287 |
///It must meet the \ref concepts::WriteMap "WriteMap" concept. |
|
| 287 |
///\c ProcessedMap type. |
|
| 288 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 288 | 289 |
template <class T> |
| 289 | 290 |
struct SetProcessedMap : public Dfs< Digraph, SetProcessedMapTraits<T> > {
|
| 290 | 291 |
typedef Dfs< Digraph, SetProcessedMapTraits<T> > Create; |
| 291 | 292 |
}; |
| 292 | 293 |
|
| 293 | 294 |
struct SetStandardProcessedMapTraits : public Traits {
|
| 294 | 295 |
typedef typename Digraph::template NodeMap<bool> ProcessedMap; |
| 295 | 296 |
static ProcessedMap *createProcessedMap(const Digraph &g) |
| 296 | 297 |
{
|
| 297 | 298 |
return new ProcessedMap(g); |
| 298 | 299 |
} |
| 299 | 300 |
}; |
| 300 | 301 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 301 |
///ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>. |
|
| 302 |
///\c ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>. |
|
| 302 | 303 |
/// |
| 303 | 304 |
///\ref named-templ-param "Named parameter" for setting |
| 304 |
///ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>. |
|
| 305 |
///\c ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>. |
|
| 305 | 306 |
///If you don't set it explicitly, it will be automatically allocated. |
| 306 | 307 |
struct SetStandardProcessedMap : |
| 307 | 308 |
public Dfs< Digraph, SetStandardProcessedMapTraits > {
|
| 308 | 309 |
typedef Dfs< Digraph, SetStandardProcessedMapTraits > Create; |
| 309 | 310 |
}; |
| 310 | 311 |
|
| 311 | 312 |
///@} |
| 312 | 313 |
|
| 313 | 314 |
public: |
| 314 | 315 |
|
| 315 | 316 |
///Constructor. |
| 316 | 317 |
|
| 317 | 318 |
///Constructor. |
| 318 | 319 |
///\param g The digraph the algorithm runs on. |
| 319 | 320 |
Dfs(const Digraph &g) : |
| 320 | 321 |
G(&g), |
| 321 | 322 |
_pred(NULL), local_pred(false), |
| 322 | 323 |
_dist(NULL), local_dist(false), |
| 323 | 324 |
_reached(NULL), local_reached(false), |
| 324 | 325 |
_processed(NULL), local_processed(false) |
| 325 | 326 |
{ }
|
| 326 | 327 |
|
| 327 | 328 |
///Destructor. |
| 328 | 329 |
~Dfs() |
| 329 | 330 |
{
|
| 330 | 331 |
if(local_pred) delete _pred; |
| 331 | 332 |
if(local_dist) delete _dist; |
| 332 | 333 |
if(local_reached) delete _reached; |
| 333 | 334 |
if(local_processed) delete _processed; |
| 334 | 335 |
} |
| 335 | 336 |
|
| 336 | 337 |
///Sets the map that stores the predecessor arcs. |
| 337 | 338 |
|
| 338 | 339 |
///Sets the map that stores the predecessor arcs. |
| 339 | 340 |
///If you don't use this function before calling \ref run(Node) "run()" |
| 340 | 341 |
///or \ref init(), an instance will be allocated automatically. |
| 341 | 342 |
///The destructor deallocates this automatically allocated map, |
| 342 | 343 |
///of course. |
| 343 | 344 |
///\return <tt> (*this) </tt> |
| 344 | 345 |
Dfs &predMap(PredMap &m) |
| 345 | 346 |
{
|
| 346 | 347 |
if(local_pred) {
|
| 347 | 348 |
delete _pred; |
| 348 | 349 |
local_pred=false; |
| 349 | 350 |
} |
| 350 | 351 |
_pred = &m; |
| 351 | 352 |
return *this; |
| 352 | 353 |
} |
| 353 | 354 |
|
| 354 | 355 |
///Sets the map that indicates which nodes are reached. |
| 355 | 356 |
|
| 356 | 357 |
///Sets the map that indicates which nodes are reached. |
| 357 | 358 |
///If you don't use this function before calling \ref run(Node) "run()" |
| 358 | 359 |
///or \ref init(), an instance will be allocated automatically. |
| 359 | 360 |
///The destructor deallocates this automatically allocated map, |
| 360 | 361 |
///of course. |
| 361 | 362 |
///\return <tt> (*this) </tt> |
| 362 | 363 |
Dfs &reachedMap(ReachedMap &m) |
| 363 | 364 |
{
|
| 364 | 365 |
if(local_reached) {
|
| 365 | 366 |
delete _reached; |
| 366 | 367 |
local_reached=false; |
| 367 | 368 |
} |
| 368 | 369 |
_reached = &m; |
| 369 | 370 |
return *this; |
| 370 | 371 |
} |
| 371 | 372 |
|
| 372 | 373 |
///Sets the map that indicates which nodes are processed. |
| 373 | 374 |
|
| 374 | 375 |
///Sets the map that indicates which nodes are processed. |
| 375 | 376 |
///If you don't use this function before calling \ref run(Node) "run()" |
| 376 | 377 |
///or \ref init(), an instance will be allocated automatically. |
| 377 | 378 |
///The destructor deallocates this automatically allocated map, |
| 378 | 379 |
///of course. |
| 379 | 380 |
///\return <tt> (*this) </tt> |
| 380 | 381 |
Dfs &processedMap(ProcessedMap &m) |
| 381 | 382 |
{
|
| 382 | 383 |
if(local_processed) {
|
| 383 | 384 |
delete _processed; |
| 384 | 385 |
local_processed=false; |
| 385 | 386 |
} |
| 386 | 387 |
_processed = &m; |
| 387 | 388 |
return *this; |
| 388 | 389 |
} |
| 389 | 390 |
|
| 390 | 391 |
///Sets the map that stores the distances of the nodes. |
| 391 | 392 |
|
| 392 | 393 |
///Sets the map that stores the distances of the nodes calculated by |
| 393 | 394 |
///the algorithm. |
| 394 | 395 |
///If you don't use this function before calling \ref run(Node) "run()" |
| 395 | 396 |
///or \ref init(), an instance will be allocated automatically. |
| 396 | 397 |
///The destructor deallocates this automatically allocated map, |
| 397 | 398 |
///of course. |
| 398 | 399 |
///\return <tt> (*this) </tt> |
| 399 | 400 |
Dfs &distMap(DistMap &m) |
| 400 | 401 |
{
|
| 401 | 402 |
if(local_dist) {
|
| 402 | 403 |
delete _dist; |
| 403 | 404 |
local_dist=false; |
| 404 | 405 |
} |
| 405 | 406 |
_dist = &m; |
| 406 | 407 |
return *this; |
| 407 | 408 |
} |
| 408 | 409 |
|
| 409 | 410 |
public: |
| 410 | 411 |
|
| 411 | 412 |
///\name Execution Control |
| 412 | 413 |
///The simplest way to execute the DFS algorithm is to use one of the |
| 413 | 414 |
///member functions called \ref run(Node) "run()".\n |
| 414 |
///If you need more control on the execution, first you have to call |
|
| 415 |
///\ref init(), then you can add a source node with \ref addSource() |
|
| 415 |
///If you need better control on the execution, you have to call |
|
| 416 |
///\ref init() first, then you can add a source node with \ref addSource() |
|
| 416 | 417 |
///and perform the actual computation with \ref start(). |
| 417 | 418 |
///This procedure can be repeated if there are nodes that have not |
| 418 | 419 |
///been reached. |
| 419 | 420 |
|
| 420 | 421 |
///@{
|
| 421 | 422 |
|
| 422 | 423 |
///\brief Initializes the internal data structures. |
| 423 | 424 |
/// |
| 424 | 425 |
///Initializes the internal data structures. |
| 425 | 426 |
void init() |
| 426 | 427 |
{
|
| 427 | 428 |
create_maps(); |
| 428 | 429 |
_stack.resize(countNodes(*G)); |
| 429 | 430 |
_stack_head=-1; |
| 430 | 431 |
for ( NodeIt u(*G) ; u!=INVALID ; ++u ) {
|
| 431 | 432 |
_pred->set(u,INVALID); |
| 432 | 433 |
_reached->set(u,false); |
| 433 | 434 |
_processed->set(u,false); |
| 434 | 435 |
} |
| 435 | 436 |
} |
| 436 | 437 |
|
| 437 | 438 |
///Adds a new source node. |
| 438 | 439 |
|
| 439 | 440 |
///Adds a new source node to the set of nodes to be processed. |
| 440 | 441 |
/// |
| 441 | 442 |
///\pre The stack must be empty. Otherwise the algorithm gives |
| 442 | 443 |
///wrong results. (One of the outgoing arcs of all the source nodes |
| 443 | 444 |
///except for the last one will not be visited and distances will |
| 444 | 445 |
///also be wrong.) |
| 445 | 446 |
void addSource(Node s) |
| 446 | 447 |
{
|
| 447 | 448 |
LEMON_DEBUG(emptyQueue(), "The stack is not empty."); |
| 448 | 449 |
if(!(*_reached)[s]) |
| 449 | 450 |
{
|
| 450 | 451 |
_reached->set(s,true); |
| 451 | 452 |
_pred->set(s,INVALID); |
| 452 | 453 |
OutArcIt e(*G,s); |
| 453 | 454 |
if(e!=INVALID) {
|
| 454 | 455 |
_stack[++_stack_head]=e; |
| 455 | 456 |
_dist->set(s,_stack_head); |
| 456 | 457 |
} |
| 457 | 458 |
else {
|
| 458 | 459 |
_processed->set(s,true); |
| 459 | 460 |
_dist->set(s,0); |
| 460 | 461 |
} |
| 461 | 462 |
} |
| 462 | 463 |
} |
| 463 | 464 |
|
| 464 | 465 |
///Processes the next arc. |
| 465 | 466 |
|
| 466 | 467 |
///Processes the next arc. |
| 467 | 468 |
/// |
| 468 | 469 |
///\return The processed arc. |
| 469 | 470 |
/// |
| 470 | 471 |
///\pre The stack must not be empty. |
| 471 | 472 |
Arc processNextArc() |
| 472 | 473 |
{
|
| 473 | 474 |
Node m; |
| 474 | 475 |
Arc e=_stack[_stack_head]; |
| 475 | 476 |
if(!(*_reached)[m=G->target(e)]) {
|
| 476 | 477 |
_pred->set(m,e); |
| 477 | 478 |
_reached->set(m,true); |
| 478 | 479 |
++_stack_head; |
| 479 | 480 |
_stack[_stack_head] = OutArcIt(*G, m); |
| 480 | 481 |
_dist->set(m,_stack_head); |
| 481 | 482 |
} |
| 482 | 483 |
else {
|
| 483 | 484 |
m=G->source(e); |
| 484 | 485 |
++_stack[_stack_head]; |
| 485 | 486 |
} |
| 486 | 487 |
while(_stack_head>=0 && _stack[_stack_head]==INVALID) {
|
| 487 | 488 |
_processed->set(m,true); |
| 488 | 489 |
--_stack_head; |
| 489 | 490 |
if(_stack_head>=0) {
|
| 490 | 491 |
m=G->source(_stack[_stack_head]); |
| 491 | 492 |
++_stack[_stack_head]; |
| 492 | 493 |
} |
| 493 | 494 |
} |
| 494 | 495 |
return e; |
| 495 | 496 |
} |
| 496 | 497 |
|
| 497 | 498 |
///Next arc to be processed. |
| 498 | 499 |
|
| 499 | 500 |
///Next arc to be processed. |
| 500 | 501 |
/// |
| 501 | 502 |
///\return The next arc to be processed or \c INVALID if the stack |
| 502 | 503 |
///is empty. |
| 503 | 504 |
OutArcIt nextArc() const |
| 504 | 505 |
{
|
| 505 | 506 |
return _stack_head>=0?_stack[_stack_head]:INVALID; |
| 506 | 507 |
} |
| 507 | 508 |
|
| 508 | 509 |
///Returns \c false if there are nodes to be processed. |
| 509 | 510 |
|
| 510 | 511 |
///Returns \c false if there are nodes to be processed |
| 511 | 512 |
///in the queue (stack). |
| 512 | 513 |
bool emptyQueue() const { return _stack_head<0; }
|
| 513 | 514 |
|
| 514 | 515 |
///Returns the number of the nodes to be processed. |
| 515 | 516 |
|
| 516 | 517 |
///Returns the number of the nodes to be processed |
| 517 | 518 |
///in the queue (stack). |
| 518 | 519 |
int queueSize() const { return _stack_head+1; }
|
| 519 | 520 |
|
| 520 | 521 |
///Executes the algorithm. |
| 521 | 522 |
|
| 522 | 523 |
///Executes the algorithm. |
| 523 | 524 |
/// |
| 524 | 525 |
///This method runs the %DFS algorithm from the root node |
| 525 | 526 |
///in order to compute the DFS path to each node. |
| 526 | 527 |
/// |
| 527 | 528 |
/// The algorithm computes |
| 528 | 529 |
///- the %DFS tree, |
| 529 | 530 |
///- the distance of each node from the root in the %DFS tree. |
| 530 | 531 |
/// |
| 531 | 532 |
///\pre init() must be called and a root node should be |
| 532 | 533 |
///added with addSource() before using this function. |
| 533 | 534 |
/// |
| 534 | 535 |
///\note <tt>d.start()</tt> is just a shortcut of the following code. |
| 535 | 536 |
///\code |
| 536 | 537 |
/// while ( !d.emptyQueue() ) {
|
| 537 | 538 |
/// d.processNextArc(); |
| 538 | 539 |
/// } |
| 539 | 540 |
///\endcode |
| 540 | 541 |
void start() |
| 541 | 542 |
{
|
| 542 | 543 |
while ( !emptyQueue() ) processNextArc(); |
| 543 | 544 |
} |
| 544 | 545 |
|
| 545 | 546 |
///Executes the algorithm until the given target node is reached. |
| 546 | 547 |
|
| 547 | 548 |
///Executes the algorithm until the given target node is reached. |
| 548 | 549 |
/// |
| 549 | 550 |
///This method runs the %DFS algorithm from the root node |
| 550 | 551 |
///in order to compute the DFS path to \c t. |
| 551 | 552 |
/// |
| 552 | 553 |
///The algorithm computes |
| 553 | 554 |
///- the %DFS path to \c t, |
| 554 | 555 |
///- the distance of \c t from the root in the %DFS tree. |
| 555 | 556 |
/// |
| 556 | 557 |
///\pre init() must be called and a root node should be |
| 557 | 558 |
///added with addSource() before using this function. |
| 558 | 559 |
void start(Node t) |
| 559 | 560 |
{
|
| 560 | 561 |
while ( !emptyQueue() && G->target(_stack[_stack_head])!=t ) |
| 561 | 562 |
processNextArc(); |
| 562 | 563 |
} |
| 563 | 564 |
|
| 564 | 565 |
///Executes the algorithm until a condition is met. |
| 565 | 566 |
|
| 566 | 567 |
///Executes the algorithm until a condition is met. |
| 567 | 568 |
/// |
| 568 | 569 |
///This method runs the %DFS algorithm from the root node |
| 569 | 570 |
///until an arc \c a with <tt>am[a]</tt> true is found. |
| 570 | 571 |
/// |
| 571 | 572 |
///\param am A \c bool (or convertible) arc map. The algorithm |
| 572 | 573 |
///will stop when it reaches an arc \c a with <tt>am[a]</tt> true. |
| 573 | 574 |
/// |
| 574 | 575 |
///\return The reached arc \c a with <tt>am[a]</tt> true or |
| 575 | 576 |
///\c INVALID if no such arc was found. |
| 576 | 577 |
/// |
| 577 | 578 |
///\pre init() must be called and a root node should be |
| 578 | 579 |
///added with addSource() before using this function. |
| 579 | 580 |
/// |
| 580 | 581 |
///\warning Contrary to \ref Bfs and \ref Dijkstra, \c am is an arc map, |
| 581 | 582 |
///not a node map. |
| 582 | 583 |
template<class ArcBoolMap> |
| 583 | 584 |
Arc start(const ArcBoolMap &am) |
| 584 | 585 |
{
|
| 585 | 586 |
while ( !emptyQueue() && !am[_stack[_stack_head]] ) |
| 586 | 587 |
processNextArc(); |
| 587 | 588 |
return emptyQueue() ? INVALID : _stack[_stack_head]; |
| 588 | 589 |
} |
| 589 | 590 |
|
| 590 | 591 |
///Runs the algorithm from the given source node. |
| 591 | 592 |
|
| 592 | 593 |
///This method runs the %DFS algorithm from node \c s |
| 593 | 594 |
///in order to compute the DFS path to each node. |
| 594 | 595 |
/// |
| 595 | 596 |
///The algorithm computes |
| 596 | 597 |
///- the %DFS tree, |
| 597 | 598 |
///- the distance of each node from the root in the %DFS tree. |
| 598 | 599 |
/// |
| 599 | 600 |
///\note <tt>d.run(s)</tt> is just a shortcut of the following code. |
| 600 | 601 |
///\code |
| 601 | 602 |
/// d.init(); |
| 602 | 603 |
/// d.addSource(s); |
| 603 | 604 |
/// d.start(); |
| 604 | 605 |
///\endcode |
| 605 | 606 |
void run(Node s) {
|
| 606 | 607 |
init(); |
| 607 | 608 |
addSource(s); |
| 608 | 609 |
start(); |
| 609 | 610 |
} |
| 610 | 611 |
|
| 611 | 612 |
///Finds the %DFS path between \c s and \c t. |
| 612 | 613 |
|
| 613 | 614 |
///This method runs the %DFS algorithm from node \c s |
| 614 | 615 |
///in order to compute the DFS path to node \c t |
| 615 | 616 |
///(it stops searching when \c t is processed) |
| 616 | 617 |
/// |
| 617 | 618 |
///\return \c true if \c t is reachable form \c s. |
| 618 | 619 |
/// |
| 619 | 620 |
///\note Apart from the return value, <tt>d.run(s,t)</tt> is |
| 620 | 621 |
///just a shortcut of the following code. |
| 621 | 622 |
///\code |
| 622 | 623 |
/// d.init(); |
| 623 | 624 |
/// d.addSource(s); |
| 624 | 625 |
/// d.start(t); |
| 625 | 626 |
///\endcode |
| 626 | 627 |
bool run(Node s,Node t) {
|
| 627 | 628 |
init(); |
| 628 | 629 |
addSource(s); |
| 629 | 630 |
start(t); |
| 630 | 631 |
return reached(t); |
| 631 | 632 |
} |
| 632 | 633 |
|
| 633 | 634 |
///Runs the algorithm to visit all nodes in the digraph. |
| 634 | 635 |
|
| 635 | 636 |
///This method runs the %DFS algorithm in order to compute the |
| 636 | 637 |
///%DFS path to each node. |
| 637 | 638 |
/// |
| 638 | 639 |
///The algorithm computes |
| 639 | 640 |
///- the %DFS tree (forest), |
| 640 | 641 |
///- the distance of each node from the root(s) in the %DFS tree. |
| 641 | 642 |
/// |
| 642 | 643 |
///\note <tt>d.run()</tt> is just a shortcut of the following code. |
| 643 | 644 |
///\code |
| 644 | 645 |
/// d.init(); |
| 645 | 646 |
/// for (NodeIt n(digraph); n != INVALID; ++n) {
|
| 646 | 647 |
/// if (!d.reached(n)) {
|
| 647 | 648 |
/// d.addSource(n); |
| 648 | 649 |
/// d.start(); |
| 649 | 650 |
/// } |
| 650 | 651 |
/// } |
| 651 | 652 |
///\endcode |
| 652 | 653 |
void run() {
|
| 653 | 654 |
init(); |
| 654 | 655 |
for (NodeIt it(*G); it != INVALID; ++it) {
|
| 655 | 656 |
if (!reached(it)) {
|
| 656 | 657 |
addSource(it); |
| 657 | 658 |
start(); |
| 658 | 659 |
} |
| 659 | 660 |
} |
| 660 | 661 |
} |
| 661 | 662 |
|
| 662 | 663 |
///@} |
| 663 | 664 |
|
| 664 | 665 |
///\name Query Functions |
| 665 | 666 |
///The results of the DFS algorithm can be obtained using these |
| 666 | 667 |
///functions.\n |
| 667 | 668 |
///Either \ref run(Node) "run()" or \ref start() should be called |
| 668 | 669 |
///before using them. |
| 669 | 670 |
|
| 670 | 671 |
///@{
|
| 671 | 672 |
|
| 672 |
///The DFS path to |
|
| 673 |
///The DFS path to the given node. |
|
| 673 | 674 |
|
| 674 |
///Returns the DFS path to |
|
| 675 |
///Returns the DFS path to the given node from the root(s). |
|
| 675 | 676 |
/// |
| 676 | 677 |
///\warning \c t should be reached from the root(s). |
| 677 | 678 |
/// |
| 678 | 679 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 679 | 680 |
///must be called before using this function. |
| 680 | 681 |
Path path(Node t) const { return Path(*G, *_pred, t); }
|
| 681 | 682 |
|
| 682 |
///The distance of |
|
| 683 |
///The distance of the given node from the root(s). |
|
| 683 | 684 |
|
| 684 |
///Returns the distance of |
|
| 685 |
///Returns the distance of the given node from the root(s). |
|
| 685 | 686 |
/// |
| 686 | 687 |
///\warning If node \c v is not reached from the root(s), then |
| 687 | 688 |
///the return value of this function is undefined. |
| 688 | 689 |
/// |
| 689 | 690 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 690 | 691 |
///must be called before using this function. |
| 691 | 692 |
int dist(Node v) const { return (*_dist)[v]; }
|
| 692 | 693 |
|
| 693 |
///Returns the 'previous arc' of the %DFS tree for |
|
| 694 |
///Returns the 'previous arc' of the %DFS tree for the given node. |
|
| 694 | 695 |
|
| 695 | 696 |
///This function returns the 'previous arc' of the %DFS tree for the |
| 696 | 697 |
///node \c v, i.e. it returns the last arc of a %DFS path from a |
| 697 | 698 |
///root to \c v. It is \c INVALID if \c v is not reached from the |
| 698 | 699 |
///root(s) or if \c v is a root. |
| 699 | 700 |
/// |
| 700 | 701 |
///The %DFS tree used here is equal to the %DFS tree used in |
| 701 |
///\ref predNode(). |
|
| 702 |
///\ref predNode() and \ref predMap(). |
|
| 702 | 703 |
/// |
| 703 | 704 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 704 | 705 |
///must be called before using this function. |
| 705 | 706 |
Arc predArc(Node v) const { return (*_pred)[v];}
|
| 706 | 707 |
|
| 707 |
///Returns the 'previous node' of the %DFS tree. |
|
| 708 |
///Returns the 'previous node' of the %DFS tree for the given node. |
|
| 708 | 709 |
|
| 709 | 710 |
///This function returns the 'previous node' of the %DFS |
| 710 | 711 |
///tree for the node \c v, i.e. it returns the last but one node |
| 711 |
/// |
|
| 712 |
///of a %DFS path from a root to \c v. It is \c INVALID |
|
| 712 | 713 |
///if \c v is not reached from the root(s) or if \c v is a root. |
| 713 | 714 |
/// |
| 714 | 715 |
///The %DFS tree used here is equal to the %DFS tree used in |
| 715 |
///\ref predArc(). |
|
| 716 |
///\ref predArc() and \ref predMap(). |
|
| 716 | 717 |
/// |
| 717 | 718 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 718 | 719 |
///must be called before using this function. |
| 719 | 720 |
Node predNode(Node v) const { return (*_pred)[v]==INVALID ? INVALID:
|
| 720 | 721 |
G->source((*_pred)[v]); } |
| 721 | 722 |
|
| 722 | 723 |
///\brief Returns a const reference to the node map that stores the |
| 723 | 724 |
///distances of the nodes. |
| 724 | 725 |
/// |
| 725 | 726 |
///Returns a const reference to the node map that stores the |
| 726 | 727 |
///distances of the nodes calculated by the algorithm. |
| 727 | 728 |
/// |
| 728 | 729 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 729 | 730 |
///must be called before using this function. |
| 730 | 731 |
const DistMap &distMap() const { return *_dist;}
|
| 731 | 732 |
|
| 732 | 733 |
///\brief Returns a const reference to the node map that stores the |
| 733 | 734 |
///predecessor arcs. |
| 734 | 735 |
/// |
| 735 | 736 |
///Returns a const reference to the node map that stores the predecessor |
| 736 |
///arcs, which form the DFS tree. |
|
| 737 |
///arcs, which form the DFS tree (forest). |
|
| 737 | 738 |
/// |
| 738 | 739 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 739 | 740 |
///must be called before using this function. |
| 740 | 741 |
const PredMap &predMap() const { return *_pred;}
|
| 741 | 742 |
|
| 742 |
///Checks if |
|
| 743 |
///Checks if the given node. node is reached from the root(s). |
|
| 743 | 744 |
|
| 744 | 745 |
///Returns \c true if \c v is reached from the root(s). |
| 745 | 746 |
/// |
| 746 | 747 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 747 | 748 |
///must be called before using this function. |
| 748 | 749 |
bool reached(Node v) const { return (*_reached)[v]; }
|
| 749 | 750 |
|
| 750 | 751 |
///@} |
| 751 | 752 |
}; |
| 752 | 753 |
|
| 753 | 754 |
///Default traits class of dfs() function. |
| 754 | 755 |
|
| 755 | 756 |
///Default traits class of dfs() function. |
| 756 | 757 |
///\tparam GR Digraph type. |
| 757 | 758 |
template<class GR> |
| 758 | 759 |
struct DfsWizardDefaultTraits |
| 759 | 760 |
{
|
| 760 | 761 |
///The type of the digraph the algorithm runs on. |
| 761 | 762 |
typedef GR Digraph; |
| 762 | 763 |
|
| 763 | 764 |
///\brief The type of the map that stores the predecessor |
| 764 | 765 |
///arcs of the %DFS paths. |
| 765 | 766 |
/// |
| 766 | 767 |
///The type of the map that stores the predecessor |
| 767 | 768 |
///arcs of the %DFS paths. |
| 768 |
///It must |
|
| 769 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 769 | 770 |
typedef typename Digraph::template NodeMap<typename Digraph::Arc> PredMap; |
| 770 | 771 |
///Instantiates a PredMap. |
| 771 | 772 |
|
| 772 | 773 |
///This function instantiates a PredMap. |
| 773 | 774 |
///\param g is the digraph, to which we would like to define the |
| 774 | 775 |
///PredMap. |
| 775 | 776 |
static PredMap *createPredMap(const Digraph &g) |
| 776 | 777 |
{
|
| 777 | 778 |
return new PredMap(g); |
| 778 | 779 |
} |
| 779 | 780 |
|
| 780 | 781 |
///The type of the map that indicates which nodes are processed. |
| 781 | 782 |
|
| 782 | 783 |
///The type of the map that indicates which nodes are processed. |
| 783 |
///It must |
|
| 784 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 784 | 785 |
///By default it is a NullMap. |
| 785 | 786 |
typedef NullMap<typename Digraph::Node,bool> ProcessedMap; |
| 786 | 787 |
///Instantiates a ProcessedMap. |
| 787 | 788 |
|
| 788 | 789 |
///This function instantiates a ProcessedMap. |
| 789 | 790 |
///\param g is the digraph, to which |
| 790 | 791 |
///we would like to define the ProcessedMap. |
| 791 | 792 |
#ifdef DOXYGEN |
| 792 | 793 |
static ProcessedMap *createProcessedMap(const Digraph &g) |
| 793 | 794 |
#else |
| 794 | 795 |
static ProcessedMap *createProcessedMap(const Digraph &) |
| 795 | 796 |
#endif |
| 796 | 797 |
{
|
| 797 | 798 |
return new ProcessedMap(); |
| 798 | 799 |
} |
| 799 | 800 |
|
| 800 | 801 |
///The type of the map that indicates which nodes are reached. |
| 801 | 802 |
|
| 802 | 803 |
///The type of the map that indicates which nodes are reached. |
| 803 |
///It must |
|
| 804 |
///It must conform to the \ref concepts::ReadWriteMap "ReadWriteMap" concept. |
|
| 804 | 805 |
typedef typename Digraph::template NodeMap<bool> ReachedMap; |
| 805 | 806 |
///Instantiates a ReachedMap. |
| 806 | 807 |
|
| 807 | 808 |
///This function instantiates a ReachedMap. |
| 808 | 809 |
///\param g is the digraph, to which |
| 809 | 810 |
///we would like to define the ReachedMap. |
| 810 | 811 |
static ReachedMap *createReachedMap(const Digraph &g) |
| 811 | 812 |
{
|
| 812 | 813 |
return new ReachedMap(g); |
| 813 | 814 |
} |
| 814 | 815 |
|
| 815 | 816 |
///The type of the map that stores the distances of the nodes. |
| 816 | 817 |
|
| 817 | 818 |
///The type of the map that stores the distances of the nodes. |
| 818 |
///It must |
|
| 819 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 819 | 820 |
typedef typename Digraph::template NodeMap<int> DistMap; |
| 820 | 821 |
///Instantiates a DistMap. |
| 821 | 822 |
|
| 822 | 823 |
///This function instantiates a DistMap. |
| 823 | 824 |
///\param g is the digraph, to which we would like to define |
| 824 | 825 |
///the DistMap |
| 825 | 826 |
static DistMap *createDistMap(const Digraph &g) |
| 826 | 827 |
{
|
| 827 | 828 |
return new DistMap(g); |
| 828 | 829 |
} |
| 829 | 830 |
|
| 830 | 831 |
///The type of the DFS paths. |
| 831 | 832 |
|
| 832 | 833 |
///The type of the DFS paths. |
| 833 |
///It must |
|
| 834 |
///It must conform to the \ref concepts::Path "Path" concept. |
|
| 834 | 835 |
typedef lemon::Path<Digraph> Path; |
| 835 | 836 |
}; |
| 836 | 837 |
|
| 837 | 838 |
/// Default traits class used by DfsWizard |
| 838 | 839 |
|
| 839 |
/// To make it easier to use Dfs algorithm |
|
| 840 |
/// we have created a wizard class. |
|
| 841 |
/// This \ref DfsWizard class needs default traits, |
|
| 842 |
/// as well as the \ref Dfs class. |
|
| 843 |
/// The \ref DfsWizardBase is a class to be the default traits of the |
|
| 844 |
/// \ref DfsWizard class. |
|
| 840 |
/// Default traits class used by DfsWizard. |
|
| 841 |
/// \tparam GR The type of the digraph. |
|
| 845 | 842 |
template<class GR> |
| 846 | 843 |
class DfsWizardBase : public DfsWizardDefaultTraits<GR> |
| 847 | 844 |
{
|
| 848 | 845 |
|
| 849 | 846 |
typedef DfsWizardDefaultTraits<GR> Base; |
| 850 | 847 |
protected: |
| 851 | 848 |
//The type of the nodes in the digraph. |
| 852 | 849 |
typedef typename Base::Digraph::Node Node; |
| 853 | 850 |
|
| 854 | 851 |
//Pointer to the digraph the algorithm runs on. |
| 855 | 852 |
void *_g; |
| 856 | 853 |
//Pointer to the map of reached nodes. |
| 857 | 854 |
void *_reached; |
| 858 | 855 |
//Pointer to the map of processed nodes. |
| 859 | 856 |
void *_processed; |
| 860 | 857 |
//Pointer to the map of predecessors arcs. |
| 861 | 858 |
void *_pred; |
| 862 | 859 |
//Pointer to the map of distances. |
| 863 | 860 |
void *_dist; |
| 864 | 861 |
//Pointer to the DFS path to the target node. |
| 865 | 862 |
void *_path; |
| 866 | 863 |
//Pointer to the distance of the target node. |
| 867 | 864 |
int *_di; |
| 868 | 865 |
|
| 869 | 866 |
public: |
| 870 | 867 |
/// Constructor. |
| 871 | 868 |
|
| 872 |
/// This constructor does not require parameters, |
|
| 869 |
/// This constructor does not require parameters, it initiates |
|
| 873 | 870 |
/// all of the attributes to \c 0. |
| 874 | 871 |
DfsWizardBase() : _g(0), _reached(0), _processed(0), _pred(0), |
| 875 | 872 |
_dist(0), _path(0), _di(0) {}
|
| 876 | 873 |
|
| 877 | 874 |
/// Constructor. |
| 878 | 875 |
|
| 879 | 876 |
/// This constructor requires one parameter, |
| 880 | 877 |
/// others are initiated to \c 0. |
| 881 | 878 |
/// \param g The digraph the algorithm runs on. |
| 882 | 879 |
DfsWizardBase(const GR &g) : |
| 883 | 880 |
_g(reinterpret_cast<void*>(const_cast<GR*>(&g))), |
| 884 | 881 |
_reached(0), _processed(0), _pred(0), _dist(0), _path(0), _di(0) {}
|
| 885 | 882 |
|
| 886 | 883 |
}; |
| 887 | 884 |
|
| 888 | 885 |
/// Auxiliary class for the function-type interface of DFS algorithm. |
| 889 | 886 |
|
| 890 | 887 |
/// This auxiliary class is created to implement the |
| 891 | 888 |
/// \ref dfs() "function-type interface" of \ref Dfs algorithm. |
| 892 | 889 |
/// It does not have own \ref run(Node) "run()" method, it uses the |
| 893 | 890 |
/// functions and features of the plain \ref Dfs. |
| 894 | 891 |
/// |
| 895 | 892 |
/// This class should only be used through the \ref dfs() function, |
| 896 | 893 |
/// which makes it easier to use the algorithm. |
| 897 | 894 |
template<class TR> |
| 898 | 895 |
class DfsWizard : public TR |
| 899 | 896 |
{
|
| 900 | 897 |
typedef TR Base; |
| 901 | 898 |
|
| 902 |
///The type of the digraph the algorithm runs on. |
|
| 903 | 899 |
typedef typename TR::Digraph Digraph; |
| 904 | 900 |
|
| 905 | 901 |
typedef typename Digraph::Node Node; |
| 906 | 902 |
typedef typename Digraph::NodeIt NodeIt; |
| 907 | 903 |
typedef typename Digraph::Arc Arc; |
| 908 | 904 |
typedef typename Digraph::OutArcIt OutArcIt; |
| 909 | 905 |
|
| 910 |
///\brief The type of the map that stores the predecessor |
|
| 911 |
///arcs of the DFS paths. |
|
| 912 | 906 |
typedef typename TR::PredMap PredMap; |
| 913 |
///\brief The type of the map that stores the distances of the nodes. |
|
| 914 | 907 |
typedef typename TR::DistMap DistMap; |
| 915 |
///\brief The type of the map that indicates which nodes are reached. |
|
| 916 | 908 |
typedef typename TR::ReachedMap ReachedMap; |
| 917 |
///\brief The type of the map that indicates which nodes are processed. |
|
| 918 | 909 |
typedef typename TR::ProcessedMap ProcessedMap; |
| 919 |
///The type of the DFS paths |
|
| 920 | 910 |
typedef typename TR::Path Path; |
| 921 | 911 |
|
| 922 | 912 |
public: |
| 923 | 913 |
|
| 924 | 914 |
/// Constructor. |
| 925 | 915 |
DfsWizard() : TR() {}
|
| 926 | 916 |
|
| 927 | 917 |
/// Constructor that requires parameters. |
| 928 | 918 |
|
| 929 | 919 |
/// Constructor that requires parameters. |
| 930 | 920 |
/// These parameters will be the default values for the traits class. |
| 931 | 921 |
/// \param g The digraph the algorithm runs on. |
| 932 | 922 |
DfsWizard(const Digraph &g) : |
| 933 | 923 |
TR(g) {}
|
| 934 | 924 |
|
| 935 | 925 |
///Copy constructor |
| 936 | 926 |
DfsWizard(const TR &b) : TR(b) {}
|
| 937 | 927 |
|
| 938 | 928 |
~DfsWizard() {}
|
| 939 | 929 |
|
| 940 | 930 |
///Runs DFS algorithm from the given source node. |
| 941 | 931 |
|
| 942 | 932 |
///This method runs DFS algorithm from node \c s |
| 943 | 933 |
///in order to compute the DFS path to each node. |
| 944 | 934 |
void run(Node s) |
| 945 | 935 |
{
|
| 946 | 936 |
Dfs<Digraph,TR> alg(*reinterpret_cast<const Digraph*>(Base::_g)); |
| 947 | 937 |
if (Base::_pred) |
| 948 | 938 |
alg.predMap(*reinterpret_cast<PredMap*>(Base::_pred)); |
| 949 | 939 |
if (Base::_dist) |
| 950 | 940 |
alg.distMap(*reinterpret_cast<DistMap*>(Base::_dist)); |
| 951 | 941 |
if (Base::_reached) |
| 952 | 942 |
alg.reachedMap(*reinterpret_cast<ReachedMap*>(Base::_reached)); |
| 953 | 943 |
if (Base::_processed) |
| 954 | 944 |
alg.processedMap(*reinterpret_cast<ProcessedMap*>(Base::_processed)); |
| 955 | 945 |
if (s!=INVALID) |
| 956 | 946 |
alg.run(s); |
| 957 | 947 |
else |
| 958 | 948 |
alg.run(); |
| 959 | 949 |
} |
| 960 | 950 |
|
| 961 | 951 |
///Finds the DFS path between \c s and \c t. |
| 962 | 952 |
|
| 963 | 953 |
///This method runs DFS algorithm from node \c s |
| 964 | 954 |
///in order to compute the DFS path to node \c t |
| 965 | 955 |
///(it stops searching when \c t is processed). |
| 966 | 956 |
/// |
| 967 | 957 |
///\return \c true if \c t is reachable form \c s. |
| 968 | 958 |
bool run(Node s, Node t) |
| 969 | 959 |
{
|
| 970 | 960 |
Dfs<Digraph,TR> alg(*reinterpret_cast<const Digraph*>(Base::_g)); |
| 971 | 961 |
if (Base::_pred) |
| 972 | 962 |
alg.predMap(*reinterpret_cast<PredMap*>(Base::_pred)); |
| 973 | 963 |
if (Base::_dist) |
| 974 | 964 |
alg.distMap(*reinterpret_cast<DistMap*>(Base::_dist)); |
| 975 | 965 |
if (Base::_reached) |
| 976 | 966 |
alg.reachedMap(*reinterpret_cast<ReachedMap*>(Base::_reached)); |
| 977 | 967 |
if (Base::_processed) |
| 978 | 968 |
alg.processedMap(*reinterpret_cast<ProcessedMap*>(Base::_processed)); |
| 979 | 969 |
alg.run(s,t); |
| 980 | 970 |
if (Base::_path) |
| 981 | 971 |
*reinterpret_cast<Path*>(Base::_path) = alg.path(t); |
| 982 | 972 |
if (Base::_di) |
| 983 | 973 |
*Base::_di = alg.dist(t); |
| 984 | 974 |
return alg.reached(t); |
| 985 | 975 |
} |
| 986 | 976 |
|
| 987 | 977 |
///Runs DFS algorithm to visit all nodes in the digraph. |
| 988 | 978 |
|
| 989 | 979 |
///This method runs DFS algorithm in order to compute |
| 990 | 980 |
///the DFS path to each node. |
| 991 | 981 |
void run() |
| 992 | 982 |
{
|
| 993 | 983 |
run(INVALID); |
| 994 | 984 |
} |
| 995 | 985 |
|
| 996 | 986 |
template<class T> |
| 997 | 987 |
struct SetPredMapBase : public Base {
|
| 998 | 988 |
typedef T PredMap; |
| 999 | 989 |
static PredMap *createPredMap(const Digraph &) { return 0; };
|
| 1000 | 990 |
SetPredMapBase(const TR &b) : TR(b) {}
|
| 1001 | 991 |
}; |
| 1002 |
///\brief \ref named-func-param "Named parameter" |
|
| 1003 |
///for setting PredMap object. |
|
| 992 |
|
|
| 993 |
///\brief \ref named-templ-param "Named parameter" for setting |
|
| 994 |
///the predecessor map. |
|
| 1004 | 995 |
/// |
| 1005 |
///\ref named-func-param "Named parameter" |
|
| 1006 |
///for setting PredMap object. |
|
| 996 |
///\ref named-templ-param "Named parameter" function for setting |
|
| 997 |
///the map that stores the predecessor arcs of the nodes. |
|
| 1007 | 998 |
template<class T> |
| 1008 | 999 |
DfsWizard<SetPredMapBase<T> > predMap(const T &t) |
| 1009 | 1000 |
{
|
| 1010 | 1001 |
Base::_pred=reinterpret_cast<void*>(const_cast<T*>(&t)); |
| 1011 | 1002 |
return DfsWizard<SetPredMapBase<T> >(*this); |
| 1012 | 1003 |
} |
| 1013 | 1004 |
|
| 1014 | 1005 |
template<class T> |
| 1015 | 1006 |
struct SetReachedMapBase : public Base {
|
| 1016 | 1007 |
typedef T ReachedMap; |
| 1017 | 1008 |
static ReachedMap *createReachedMap(const Digraph &) { return 0; };
|
| 1018 | 1009 |
SetReachedMapBase(const TR &b) : TR(b) {}
|
| 1019 | 1010 |
}; |
| 1020 |
///\brief \ref named-func-param "Named parameter" |
|
| 1021 |
///for setting ReachedMap object. |
|
| 1011 |
|
|
| 1012 |
///\brief \ref named-templ-param "Named parameter" for setting |
|
| 1013 |
///the reached map. |
|
| 1022 | 1014 |
/// |
| 1023 |
/// \ref named-func-param "Named parameter" |
|
| 1024 |
///for setting ReachedMap object. |
|
| 1015 |
///\ref named-templ-param "Named parameter" function for setting |
|
| 1016 |
///the map that indicates which nodes are reached. |
|
| 1025 | 1017 |
template<class T> |
| 1026 | 1018 |
DfsWizard<SetReachedMapBase<T> > reachedMap(const T &t) |
| 1027 | 1019 |
{
|
| 1028 | 1020 |
Base::_reached=reinterpret_cast<void*>(const_cast<T*>(&t)); |
| 1029 | 1021 |
return DfsWizard<SetReachedMapBase<T> >(*this); |
| 1030 | 1022 |
} |
| 1031 | 1023 |
|
| 1032 | 1024 |
template<class T> |
| 1033 | 1025 |
struct SetDistMapBase : public Base {
|
| 1034 | 1026 |
typedef T DistMap; |
| 1035 | 1027 |
static DistMap *createDistMap(const Digraph &) { return 0; };
|
| 1036 | 1028 |
SetDistMapBase(const TR &b) : TR(b) {}
|
| 1037 | 1029 |
}; |
| 1038 |
///\brief \ref named-func-param "Named parameter" |
|
| 1039 |
///for setting DistMap object. |
|
| 1030 |
|
|
| 1031 |
///\brief \ref named-templ-param "Named parameter" for setting |
|
| 1032 |
///the distance map. |
|
| 1040 | 1033 |
/// |
| 1041 |
/// \ref named-func-param "Named parameter" |
|
| 1042 |
///for setting DistMap object. |
|
| 1034 |
///\ref named-templ-param "Named parameter" function for setting |
|
| 1035 |
///the map that stores the distances of the nodes calculated |
|
| 1036 |
///by the algorithm. |
|
| 1043 | 1037 |
template<class T> |
| 1044 | 1038 |
DfsWizard<SetDistMapBase<T> > distMap(const T &t) |
| 1045 | 1039 |
{
|
| 1046 | 1040 |
Base::_dist=reinterpret_cast<void*>(const_cast<T*>(&t)); |
| 1047 | 1041 |
return DfsWizard<SetDistMapBase<T> >(*this); |
| 1048 | 1042 |
} |
| 1049 | 1043 |
|
| 1050 | 1044 |
template<class T> |
| 1051 | 1045 |
struct SetProcessedMapBase : public Base {
|
| 1052 | 1046 |
typedef T ProcessedMap; |
| 1053 | 1047 |
static ProcessedMap *createProcessedMap(const Digraph &) { return 0; };
|
| 1054 | 1048 |
SetProcessedMapBase(const TR &b) : TR(b) {}
|
| 1055 | 1049 |
}; |
| 1056 |
///\brief \ref named-func-param "Named parameter" |
|
| 1057 |
///for setting ProcessedMap object. |
|
| 1050 |
|
|
| 1051 |
///\brief \ref named-func-param "Named parameter" for setting |
|
| 1052 |
///the processed map. |
|
| 1058 | 1053 |
/// |
| 1059 |
/// \ref named-func-param "Named parameter" |
|
| 1060 |
///for setting ProcessedMap object. |
|
| 1054 |
///\ref named-templ-param "Named parameter" function for setting |
|
| 1055 |
///the map that indicates which nodes are processed. |
|
| 1061 | 1056 |
template<class T> |
| 1062 | 1057 |
DfsWizard<SetProcessedMapBase<T> > processedMap(const T &t) |
| 1063 | 1058 |
{
|
| 1064 | 1059 |
Base::_processed=reinterpret_cast<void*>(const_cast<T*>(&t)); |
| 1065 | 1060 |
return DfsWizard<SetProcessedMapBase<T> >(*this); |
| 1066 | 1061 |
} |
| 1067 | 1062 |
|
| 1068 | 1063 |
template<class T> |
| 1069 | 1064 |
struct SetPathBase : public Base {
|
| 1070 | 1065 |
typedef T Path; |
| 1071 | 1066 |
SetPathBase(const TR &b) : TR(b) {}
|
| 1072 | 1067 |
}; |
| 1073 | 1068 |
///\brief \ref named-func-param "Named parameter" |
| 1074 | 1069 |
///for getting the DFS path to the target node. |
| 1075 | 1070 |
/// |
| 1076 | 1071 |
///\ref named-func-param "Named parameter" |
| 1077 | 1072 |
///for getting the DFS path to the target node. |
| 1078 | 1073 |
template<class T> |
| 1079 | 1074 |
DfsWizard<SetPathBase<T> > path(const T &t) |
| 1080 | 1075 |
{
|
| 1081 | 1076 |
Base::_path=reinterpret_cast<void*>(const_cast<T*>(&t)); |
| 1082 | 1077 |
return DfsWizard<SetPathBase<T> >(*this); |
| 1083 | 1078 |
} |
| 1084 | 1079 |
|
| 1085 | 1080 |
///\brief \ref named-func-param "Named parameter" |
| 1086 | 1081 |
///for getting the distance of the target node. |
| 1087 | 1082 |
/// |
| 1088 | 1083 |
///\ref named-func-param "Named parameter" |
| 1089 | 1084 |
///for getting the distance of the target node. |
| 1090 | 1085 |
DfsWizard dist(const int &d) |
| 1091 | 1086 |
{
|
| 1092 | 1087 |
Base::_di=const_cast<int*>(&d); |
| 1093 | 1088 |
return *this; |
| 1094 | 1089 |
} |
| 1095 | 1090 |
|
| 1096 | 1091 |
}; |
| 1097 | 1092 |
|
| 1098 | 1093 |
///Function-type interface for DFS algorithm. |
| 1099 | 1094 |
|
| 1100 | 1095 |
///\ingroup search |
| 1101 | 1096 |
///Function-type interface for DFS algorithm. |
| 1102 | 1097 |
/// |
| 1103 | 1098 |
///This function also has several \ref named-func-param "named parameters", |
| 1104 | 1099 |
///they are declared as the members of class \ref DfsWizard. |
| 1105 | 1100 |
///The following examples show how to use these parameters. |
| 1106 | 1101 |
///\code |
| 1107 | 1102 |
/// // Compute the DFS tree |
| 1108 | 1103 |
/// dfs(g).predMap(preds).distMap(dists).run(s); |
| 1109 | 1104 |
/// |
| 1110 | 1105 |
/// // Compute the DFS path from s to t |
| 1111 | 1106 |
/// bool reached = dfs(g).path(p).dist(d).run(s,t); |
| 1112 | 1107 |
///\endcode |
| 1113 | 1108 |
///\warning Don't forget to put the \ref DfsWizard::run(Node) "run()" |
| 1114 | 1109 |
///to the end of the parameter list. |
| 1115 | 1110 |
///\sa DfsWizard |
| 1116 | 1111 |
///\sa Dfs |
| 1117 | 1112 |
template<class GR> |
| 1118 | 1113 |
DfsWizard<DfsWizardBase<GR> > |
| 1119 | 1114 |
dfs(const GR &digraph) |
| 1120 | 1115 |
{
|
| 1121 | 1116 |
return DfsWizard<DfsWizardBase<GR> >(digraph); |
| 1122 | 1117 |
} |
| 1123 | 1118 |
|
| 1124 | 1119 |
#ifdef DOXYGEN |
| 1125 | 1120 |
/// \brief Visitor class for DFS. |
| 1126 | 1121 |
/// |
| 1127 | 1122 |
/// This class defines the interface of the DfsVisit events, and |
| 1128 | 1123 |
/// it could be the base of a real visitor class. |
| 1129 |
template <typename |
|
| 1124 |
template <typename GR> |
|
| 1130 | 1125 |
struct DfsVisitor {
|
| 1131 |
typedef |
|
| 1126 |
typedef GR Digraph; |
|
| 1132 | 1127 |
typedef typename Digraph::Arc Arc; |
| 1133 | 1128 |
typedef typename Digraph::Node Node; |
| 1134 | 1129 |
/// \brief Called for the source node of the DFS. |
| 1135 | 1130 |
/// |
| 1136 | 1131 |
/// This function is called for the source node of the DFS. |
| 1137 | 1132 |
void start(const Node& node) {}
|
| 1138 | 1133 |
/// \brief Called when the source node is leaved. |
| 1139 | 1134 |
/// |
| 1140 | 1135 |
/// This function is called when the source node is leaved. |
| 1141 | 1136 |
void stop(const Node& node) {}
|
| 1142 | 1137 |
/// \brief Called when a node is reached first time. |
| 1143 | 1138 |
/// |
| 1144 | 1139 |
/// This function is called when a node is reached first time. |
| 1145 | 1140 |
void reach(const Node& node) {}
|
| 1146 | 1141 |
/// \brief Called when an arc reaches a new node. |
| 1147 | 1142 |
/// |
| 1148 | 1143 |
/// This function is called when the DFS finds an arc whose target node |
| 1149 | 1144 |
/// is not reached yet. |
| 1150 | 1145 |
void discover(const Arc& arc) {}
|
| 1151 | 1146 |
/// \brief Called when an arc is examined but its target node is |
| 1152 | 1147 |
/// already discovered. |
| 1153 | 1148 |
/// |
| 1154 | 1149 |
/// This function is called when an arc is examined but its target node is |
| 1155 | 1150 |
/// already discovered. |
| 1156 | 1151 |
void examine(const Arc& arc) {}
|
| 1157 | 1152 |
/// \brief Called when the DFS steps back from a node. |
| 1158 | 1153 |
/// |
| 1159 | 1154 |
/// This function is called when the DFS steps back from a node. |
| 1160 | 1155 |
void leave(const Node& node) {}
|
| 1161 | 1156 |
/// \brief Called when the DFS steps back on an arc. |
| 1162 | 1157 |
/// |
| 1163 | 1158 |
/// This function is called when the DFS steps back on an arc. |
| 1164 | 1159 |
void backtrack(const Arc& arc) {}
|
| 1165 | 1160 |
}; |
| 1166 | 1161 |
#else |
| 1167 |
template <typename |
|
| 1162 |
template <typename GR> |
|
| 1168 | 1163 |
struct DfsVisitor {
|
| 1169 |
typedef |
|
| 1164 |
typedef GR Digraph; |
|
| 1170 | 1165 |
typedef typename Digraph::Arc Arc; |
| 1171 | 1166 |
typedef typename Digraph::Node Node; |
| 1172 | 1167 |
void start(const Node&) {}
|
| 1173 | 1168 |
void stop(const Node&) {}
|
| 1174 | 1169 |
void reach(const Node&) {}
|
| 1175 | 1170 |
void discover(const Arc&) {}
|
| 1176 | 1171 |
void examine(const Arc&) {}
|
| 1177 | 1172 |
void leave(const Node&) {}
|
| 1178 | 1173 |
void backtrack(const Arc&) {}
|
| 1179 | 1174 |
|
| 1180 | 1175 |
template <typename _Visitor> |
| 1181 | 1176 |
struct Constraints {
|
| 1182 | 1177 |
void constraints() {
|
| 1183 | 1178 |
Arc arc; |
| 1184 | 1179 |
Node node; |
| 1185 | 1180 |
visitor.start(node); |
| 1186 | 1181 |
visitor.stop(arc); |
| 1187 | 1182 |
visitor.reach(node); |
| 1188 | 1183 |
visitor.discover(arc); |
| 1189 | 1184 |
visitor.examine(arc); |
| 1190 | 1185 |
visitor.leave(node); |
| 1191 | 1186 |
visitor.backtrack(arc); |
| 1192 | 1187 |
} |
| 1193 | 1188 |
_Visitor& visitor; |
| 1194 | 1189 |
}; |
| 1195 | 1190 |
}; |
| 1196 | 1191 |
#endif |
| 1197 | 1192 |
|
| 1198 | 1193 |
/// \brief Default traits class of DfsVisit class. |
| 1199 | 1194 |
/// |
| 1200 | 1195 |
/// Default traits class of DfsVisit class. |
| 1201 | 1196 |
/// \tparam _Digraph The type of the digraph the algorithm runs on. |
| 1202 |
template<class |
|
| 1197 |
template<class GR> |
|
| 1203 | 1198 |
struct DfsVisitDefaultTraits {
|
| 1204 | 1199 |
|
| 1205 | 1200 |
/// \brief The type of the digraph the algorithm runs on. |
| 1206 |
typedef |
|
| 1201 |
typedef GR Digraph; |
|
| 1207 | 1202 |
|
| 1208 | 1203 |
/// \brief The type of the map that indicates which nodes are reached. |
| 1209 | 1204 |
/// |
| 1210 | 1205 |
/// The type of the map that indicates which nodes are reached. |
| 1211 |
/// It must |
|
| 1206 |
/// It must conform to the \ref concepts::ReadWriteMap "ReadWriteMap" concept. |
|
| 1212 | 1207 |
typedef typename Digraph::template NodeMap<bool> ReachedMap; |
| 1213 | 1208 |
|
| 1214 | 1209 |
/// \brief Instantiates a ReachedMap. |
| 1215 | 1210 |
/// |
| 1216 | 1211 |
/// This function instantiates a ReachedMap. |
| 1217 | 1212 |
/// \param digraph is the digraph, to which |
| 1218 | 1213 |
/// we would like to define the ReachedMap. |
| 1219 | 1214 |
static ReachedMap *createReachedMap(const Digraph &digraph) {
|
| 1220 | 1215 |
return new ReachedMap(digraph); |
| 1221 | 1216 |
} |
| 1222 | 1217 |
|
| 1223 | 1218 |
}; |
| 1224 | 1219 |
|
| 1225 | 1220 |
/// \ingroup search |
| 1226 | 1221 |
/// |
| 1227 |
/// \brief |
|
| 1222 |
/// \brief DFS algorithm class with visitor interface. |
|
| 1228 | 1223 |
/// |
| 1229 |
/// This class provides an efficient implementation of the |
|
| 1224 |
/// This class provides an efficient implementation of the DFS algorithm |
|
| 1230 | 1225 |
/// with visitor interface. |
| 1231 | 1226 |
/// |
| 1232 |
/// The |
|
| 1227 |
/// The DfsVisit class provides an alternative interface to the Dfs |
|
| 1233 | 1228 |
/// class. It works with callback mechanism, the DfsVisit object calls |
| 1234 | 1229 |
/// the member functions of the \c Visitor class on every DFS event. |
| 1235 | 1230 |
/// |
| 1236 | 1231 |
/// This interface of the DFS algorithm should be used in special cases |
| 1237 | 1232 |
/// when extra actions have to be performed in connection with certain |
| 1238 | 1233 |
/// events of the DFS algorithm. Otherwise consider to use Dfs or dfs() |
| 1239 | 1234 |
/// instead. |
| 1240 | 1235 |
/// |
| 1241 |
/// \tparam _Digraph The type of the digraph the algorithm runs on. |
|
| 1242 |
/// The default value is |
|
| 1243 |
/// \ref ListDigraph. The value of _Digraph is not used directly by |
|
| 1244 |
/// \ref DfsVisit, it is only passed to \ref DfsVisitDefaultTraits. |
|
| 1245 |
/// \tparam _Visitor The Visitor type that is used by the algorithm. |
|
| 1246 |
/// \ref DfsVisitor "DfsVisitor<_Digraph>" is an empty visitor, which |
|
| 1236 |
/// \tparam GR The type of the digraph the algorithm runs on. |
|
| 1237 |
/// The default type is \ref ListDigraph. |
|
| 1238 |
/// The value of GR is not used directly by \ref DfsVisit, |
|
| 1239 |
/// it is only passed to \ref DfsVisitDefaultTraits. |
|
| 1240 |
/// \tparam VS The Visitor type that is used by the algorithm. |
|
| 1241 |
/// \ref DfsVisitor "DfsVisitor<GR>" is an empty visitor, which |
|
| 1247 | 1242 |
/// does not observe the DFS events. If you want to observe the DFS |
| 1248 | 1243 |
/// events, you should implement your own visitor class. |
| 1249 |
/// \tparam |
|
| 1244 |
/// \tparam TR Traits class to set various data types used by the |
|
| 1250 | 1245 |
/// algorithm. The default traits class is |
| 1251 |
/// \ref DfsVisitDefaultTraits "DfsVisitDefaultTraits< |
|
| 1246 |
/// \ref DfsVisitDefaultTraits "DfsVisitDefaultTraits<GR>". |
|
| 1252 | 1247 |
/// See \ref DfsVisitDefaultTraits for the documentation of |
| 1253 | 1248 |
/// a DFS visit traits class. |
| 1254 | 1249 |
#ifdef DOXYGEN |
| 1255 |
template <typename |
|
| 1250 |
template <typename GR, typename VS, typename TR> |
|
| 1256 | 1251 |
#else |
| 1257 |
template <typename _Digraph = ListDigraph, |
|
| 1258 |
typename _Visitor = DfsVisitor<_Digraph>, |
|
| 1259 |
|
|
| 1252 |
template <typename GR = ListDigraph, |
|
| 1253 |
typename VS = DfsVisitor<GR>, |
|
| 1254 |
typename TR = DfsVisitDefaultTraits<GR> > |
|
| 1260 | 1255 |
#endif |
| 1261 | 1256 |
class DfsVisit {
|
| 1262 | 1257 |
public: |
| 1263 | 1258 |
|
| 1264 | 1259 |
///The traits class. |
| 1265 |
typedef |
|
| 1260 |
typedef TR Traits; |
|
| 1266 | 1261 |
|
| 1267 | 1262 |
///The type of the digraph the algorithm runs on. |
| 1268 | 1263 |
typedef typename Traits::Digraph Digraph; |
| 1269 | 1264 |
|
| 1270 | 1265 |
///The visitor type used by the algorithm. |
| 1271 |
typedef |
|
| 1266 |
typedef VS Visitor; |
|
| 1272 | 1267 |
|
| 1273 | 1268 |
///The type of the map that indicates which nodes are reached. |
| 1274 | 1269 |
typedef typename Traits::ReachedMap ReachedMap; |
| 1275 | 1270 |
|
| 1276 | 1271 |
private: |
| 1277 | 1272 |
|
| 1278 | 1273 |
typedef typename Digraph::Node Node; |
| 1279 | 1274 |
typedef typename Digraph::NodeIt NodeIt; |
| 1280 | 1275 |
typedef typename Digraph::Arc Arc; |
| 1281 | 1276 |
typedef typename Digraph::OutArcIt OutArcIt; |
| 1282 | 1277 |
|
| 1283 | 1278 |
//Pointer to the underlying digraph. |
| 1284 | 1279 |
const Digraph *_digraph; |
| 1285 | 1280 |
//Pointer to the visitor object. |
| 1286 | 1281 |
Visitor *_visitor; |
| 1287 | 1282 |
//Pointer to the map of reached status of the nodes. |
| 1288 | 1283 |
ReachedMap *_reached; |
| 1289 | 1284 |
//Indicates if _reached is locally allocated (true) or not. |
| 1290 | 1285 |
bool local_reached; |
| 1291 | 1286 |
|
| 1292 | 1287 |
std::vector<typename Digraph::Arc> _stack; |
| 1293 | 1288 |
int _stack_head; |
| 1294 | 1289 |
|
| 1295 | 1290 |
//Creates the maps if necessary. |
| 1296 | 1291 |
void create_maps() {
|
| 1297 | 1292 |
if(!_reached) {
|
| 1298 | 1293 |
local_reached = true; |
| 1299 | 1294 |
_reached = Traits::createReachedMap(*_digraph); |
| 1300 | 1295 |
} |
| 1301 | 1296 |
} |
| 1302 | 1297 |
|
| 1303 | 1298 |
protected: |
| 1304 | 1299 |
|
| 1305 | 1300 |
DfsVisit() {}
|
| 1306 | 1301 |
|
| 1307 | 1302 |
public: |
| 1308 | 1303 |
|
| 1309 | 1304 |
typedef DfsVisit Create; |
| 1310 | 1305 |
|
| 1311 | 1306 |
/// \name Named Template Parameters |
| 1312 | 1307 |
|
| 1313 | 1308 |
///@{
|
| 1314 | 1309 |
template <class T> |
| 1315 | 1310 |
struct SetReachedMapTraits : public Traits {
|
| 1316 | 1311 |
typedef T ReachedMap; |
| 1317 | 1312 |
static ReachedMap *createReachedMap(const Digraph &digraph) {
|
| 1318 | 1313 |
LEMON_ASSERT(false, "ReachedMap is not initialized"); |
| 1319 | 1314 |
return 0; // ignore warnings |
| 1320 | 1315 |
} |
| 1321 | 1316 |
}; |
| 1322 | 1317 |
/// \brief \ref named-templ-param "Named parameter" for setting |
| 1323 | 1318 |
/// ReachedMap type. |
| 1324 | 1319 |
/// |
| 1325 | 1320 |
/// \ref named-templ-param "Named parameter" for setting ReachedMap type. |
| 1326 | 1321 |
template <class T> |
| 1327 | 1322 |
struct SetReachedMap : public DfsVisit< Digraph, Visitor, |
| 1328 | 1323 |
SetReachedMapTraits<T> > {
|
| 1329 | 1324 |
typedef DfsVisit< Digraph, Visitor, SetReachedMapTraits<T> > Create; |
| 1330 | 1325 |
}; |
| 1331 | 1326 |
///@} |
| 1332 | 1327 |
|
| 1333 | 1328 |
public: |
| 1334 | 1329 |
|
| 1335 | 1330 |
/// \brief Constructor. |
| 1336 | 1331 |
/// |
| 1337 | 1332 |
/// Constructor. |
| 1338 | 1333 |
/// |
| 1339 | 1334 |
/// \param digraph The digraph the algorithm runs on. |
| 1340 | 1335 |
/// \param visitor The visitor object of the algorithm. |
| 1341 | 1336 |
DfsVisit(const Digraph& digraph, Visitor& visitor) |
| 1342 | 1337 |
: _digraph(&digraph), _visitor(&visitor), |
| 1343 | 1338 |
_reached(0), local_reached(false) {}
|
| 1344 | 1339 |
|
| 1345 | 1340 |
/// \brief Destructor. |
| 1346 | 1341 |
~DfsVisit() {
|
| 1347 | 1342 |
if(local_reached) delete _reached; |
| 1348 | 1343 |
} |
| 1349 | 1344 |
|
| 1350 | 1345 |
/// \brief Sets the map that indicates which nodes are reached. |
| 1351 | 1346 |
/// |
| 1352 | 1347 |
/// Sets the map that indicates which nodes are reached. |
| 1353 | 1348 |
/// If you don't use this function before calling \ref run(Node) "run()" |
| 1354 | 1349 |
/// or \ref init(), an instance will be allocated automatically. |
| 1355 | 1350 |
/// The destructor deallocates this automatically allocated map, |
| 1356 | 1351 |
/// of course. |
| 1357 | 1352 |
/// \return <tt> (*this) </tt> |
| 1358 | 1353 |
DfsVisit &reachedMap(ReachedMap &m) {
|
| 1359 | 1354 |
if(local_reached) {
|
| 1360 | 1355 |
delete _reached; |
| 1361 | 1356 |
local_reached=false; |
| 1362 | 1357 |
} |
| 1363 | 1358 |
_reached = &m; |
| 1364 | 1359 |
return *this; |
| 1365 | 1360 |
} |
| 1366 | 1361 |
|
| 1367 | 1362 |
public: |
| 1368 | 1363 |
|
| 1369 | 1364 |
/// \name Execution Control |
| 1370 | 1365 |
/// The simplest way to execute the DFS algorithm is to use one of the |
| 1371 | 1366 |
/// member functions called \ref run(Node) "run()".\n |
| 1372 |
/// If you need more control on the execution, first you have to call |
|
| 1373 |
/// \ref init(), then you can add a source node with \ref addSource() |
|
| 1367 |
/// If you need better control on the execution, you have to call |
|
| 1368 |
/// \ref init() first, then you can add a source node with \ref addSource() |
|
| 1374 | 1369 |
/// and perform the actual computation with \ref start(). |
| 1375 | 1370 |
/// This procedure can be repeated if there are nodes that have not |
| 1376 | 1371 |
/// been reached. |
| 1377 | 1372 |
|
| 1378 | 1373 |
/// @{
|
| 1379 | 1374 |
|
| 1380 | 1375 |
/// \brief Initializes the internal data structures. |
| 1381 | 1376 |
/// |
| 1382 | 1377 |
/// Initializes the internal data structures. |
| 1383 | 1378 |
void init() {
|
| 1384 | 1379 |
create_maps(); |
| 1385 | 1380 |
_stack.resize(countNodes(*_digraph)); |
| 1386 | 1381 |
_stack_head = -1; |
| 1387 | 1382 |
for (NodeIt u(*_digraph) ; u != INVALID ; ++u) {
|
| 1388 | 1383 |
_reached->set(u, false); |
| 1389 | 1384 |
} |
| 1390 | 1385 |
} |
| 1391 | 1386 |
|
| 1392 | 1387 |
/// \brief Adds a new source node. |
| 1393 | 1388 |
/// |
| 1394 | 1389 |
/// Adds a new source node to the set of nodes to be processed. |
| 1395 | 1390 |
/// |
| 1396 | 1391 |
/// \pre The stack must be empty. Otherwise the algorithm gives |
| 1397 | 1392 |
/// wrong results. (One of the outgoing arcs of all the source nodes |
| 1398 | 1393 |
/// except for the last one will not be visited and distances will |
| 1399 | 1394 |
/// also be wrong.) |
| 1400 | 1395 |
void addSource(Node s) |
| 1401 | 1396 |
{
|
| 1402 | 1397 |
LEMON_DEBUG(emptyQueue(), "The stack is not empty."); |
| 1403 | 1398 |
if(!(*_reached)[s]) {
|
| 1404 | 1399 |
_reached->set(s,true); |
| 1405 | 1400 |
_visitor->start(s); |
| 1406 | 1401 |
_visitor->reach(s); |
| 1407 | 1402 |
Arc e; |
| 1408 | 1403 |
_digraph->firstOut(e, s); |
| 1409 | 1404 |
if (e != INVALID) {
|
| 1410 | 1405 |
_stack[++_stack_head] = e; |
| 1411 | 1406 |
} else {
|
| 1412 | 1407 |
_visitor->leave(s); |
| 1413 | 1408 |
_visitor->stop(s); |
| 1414 | 1409 |
} |
| 1415 | 1410 |
} |
| 1416 | 1411 |
} |
| 1417 | 1412 |
|
| 1418 | 1413 |
/// \brief Processes the next arc. |
| 1419 | 1414 |
/// |
| 1420 | 1415 |
/// Processes the next arc. |
| 1421 | 1416 |
/// |
| 1422 | 1417 |
/// \return The processed arc. |
| 1423 | 1418 |
/// |
| 1424 | 1419 |
/// \pre The stack must not be empty. |
| 1425 | 1420 |
Arc processNextArc() {
|
| 1426 | 1421 |
Arc e = _stack[_stack_head]; |
| 1427 | 1422 |
Node m = _digraph->target(e); |
| 1428 | 1423 |
if(!(*_reached)[m]) {
|
| 1429 | 1424 |
_visitor->discover(e); |
| 1430 | 1425 |
_visitor->reach(m); |
| 1431 | 1426 |
_reached->set(m, true); |
| 1432 | 1427 |
_digraph->firstOut(_stack[++_stack_head], m); |
| 1433 | 1428 |
} else {
|
| 1434 | 1429 |
_visitor->examine(e); |
| 1435 | 1430 |
m = _digraph->source(e); |
| 1436 | 1431 |
_digraph->nextOut(_stack[_stack_head]); |
| 1437 | 1432 |
} |
| 1438 | 1433 |
while (_stack_head>=0 && _stack[_stack_head] == INVALID) {
|
| 1439 | 1434 |
_visitor->leave(m); |
| 1440 | 1435 |
--_stack_head; |
| 1441 | 1436 |
if (_stack_head >= 0) {
|
| 1442 | 1437 |
_visitor->backtrack(_stack[_stack_head]); |
| 1443 | 1438 |
m = _digraph->source(_stack[_stack_head]); |
| 1444 | 1439 |
_digraph->nextOut(_stack[_stack_head]); |
| 1445 | 1440 |
} else {
|
| 1446 | 1441 |
_visitor->stop(m); |
| 1447 | 1442 |
} |
| 1448 | 1443 |
} |
| 1449 | 1444 |
return e; |
| 1450 | 1445 |
} |
| 1451 | 1446 |
|
| 1452 | 1447 |
/// \brief Next arc to be processed. |
| 1453 | 1448 |
/// |
| 1454 | 1449 |
/// Next arc to be processed. |
| 1455 | 1450 |
/// |
| 1456 | 1451 |
/// \return The next arc to be processed or INVALID if the stack is |
| 1457 | 1452 |
/// empty. |
| 1458 | 1453 |
Arc nextArc() const {
|
| 1459 | 1454 |
return _stack_head >= 0 ? _stack[_stack_head] : INVALID; |
| 1460 | 1455 |
} |
| 1461 | 1456 |
|
| 1462 | 1457 |
/// \brief Returns \c false if there are nodes |
| 1463 | 1458 |
/// to be processed. |
| 1464 | 1459 |
/// |
| 1465 | 1460 |
/// Returns \c false if there are nodes |
| 1466 | 1461 |
/// to be processed in the queue (stack). |
| 1467 | 1462 |
bool emptyQueue() const { return _stack_head < 0; }
|
| 1468 | 1463 |
|
| 1469 | 1464 |
/// \brief Returns the number of the nodes to be processed. |
| 1470 | 1465 |
/// |
| 1471 | 1466 |
/// Returns the number of the nodes to be processed in the queue (stack). |
| 1472 | 1467 |
int queueSize() const { return _stack_head + 1; }
|
| 1473 | 1468 |
|
| 1474 | 1469 |
/// \brief Executes the algorithm. |
| 1475 | 1470 |
/// |
| 1476 | 1471 |
/// Executes the algorithm. |
| 1477 | 1472 |
/// |
| 1478 | 1473 |
/// This method runs the %DFS algorithm from the root node |
| 1479 | 1474 |
/// in order to compute the %DFS path to each node. |
| 1480 | 1475 |
/// |
| 1481 | 1476 |
/// The algorithm computes |
| 1482 | 1477 |
/// - the %DFS tree, |
| 1483 | 1478 |
/// - the distance of each node from the root in the %DFS tree. |
| 1484 | 1479 |
/// |
| 1485 | 1480 |
/// \pre init() must be called and a root node should be |
| 1486 | 1481 |
/// added with addSource() before using this function. |
| 1487 | 1482 |
/// |
| 1488 | 1483 |
/// \note <tt>d.start()</tt> is just a shortcut of the following code. |
| 1489 | 1484 |
/// \code |
| 1490 | 1485 |
/// while ( !d.emptyQueue() ) {
|
| 1491 | 1486 |
/// d.processNextArc(); |
| 1492 | 1487 |
/// } |
| 1493 | 1488 |
/// \endcode |
| 1494 | 1489 |
void start() {
|
| 1495 | 1490 |
while ( !emptyQueue() ) processNextArc(); |
| 1496 | 1491 |
} |
| 1497 | 1492 |
|
| 1498 | 1493 |
/// \brief Executes the algorithm until the given target node is reached. |
| 1499 | 1494 |
/// |
| 1500 | 1495 |
/// Executes the algorithm until the given target node is reached. |
| 1501 | 1496 |
/// |
| 1502 | 1497 |
/// This method runs the %DFS algorithm from the root node |
| 1503 | 1498 |
/// in order to compute the DFS path to \c t. |
| 1504 | 1499 |
/// |
| 1505 | 1500 |
/// The algorithm computes |
| 1506 | 1501 |
/// - the %DFS path to \c t, |
| 1507 | 1502 |
/// - the distance of \c t from the root in the %DFS tree. |
| 1508 | 1503 |
/// |
| 1509 | 1504 |
/// \pre init() must be called and a root node should be added |
| 1510 | 1505 |
/// with addSource() before using this function. |
| 1511 | 1506 |
void start(Node t) {
|
| 1512 | 1507 |
while ( !emptyQueue() && _digraph->target(_stack[_stack_head]) != t ) |
| 1513 | 1508 |
processNextArc(); |
| 1514 | 1509 |
} |
| 1515 | 1510 |
|
| 1516 | 1511 |
/// \brief Executes the algorithm until a condition is met. |
| 1517 | 1512 |
/// |
| 1518 | 1513 |
/// Executes the algorithm until a condition is met. |
| 1519 | 1514 |
/// |
| 1520 | 1515 |
/// This method runs the %DFS algorithm from the root node |
| 1521 | 1516 |
/// until an arc \c a with <tt>am[a]</tt> true is found. |
| 1522 | 1517 |
/// |
| 1523 | 1518 |
/// \param am A \c bool (or convertible) arc map. The algorithm |
| 1524 | 1519 |
/// will stop when it reaches an arc \c a with <tt>am[a]</tt> true. |
| 1525 | 1520 |
/// |
| 1526 | 1521 |
/// \return The reached arc \c a with <tt>am[a]</tt> true or |
| 1527 | 1522 |
/// \c INVALID if no such arc was found. |
| 1528 | 1523 |
/// |
| 1529 | 1524 |
/// \pre init() must be called and a root node should be added |
| 1530 | 1525 |
/// with addSource() before using this function. |
| 1531 | 1526 |
/// |
| 1532 | 1527 |
/// \warning Contrary to \ref Bfs and \ref Dijkstra, \c am is an arc map, |
| 1533 | 1528 |
/// not a node map. |
| 1534 | 1529 |
template <typename AM> |
| 1535 | 1530 |
Arc start(const AM &am) {
|
| 1536 | 1531 |
while ( !emptyQueue() && !am[_stack[_stack_head]] ) |
| 1537 | 1532 |
processNextArc(); |
| 1538 | 1533 |
return emptyQueue() ? INVALID : _stack[_stack_head]; |
| 1539 | 1534 |
} |
| 1540 | 1535 |
|
| 1541 | 1536 |
/// \brief Runs the algorithm from the given source node. |
| 1542 | 1537 |
/// |
| 1543 | 1538 |
/// This method runs the %DFS algorithm from node \c s. |
| 1544 | 1539 |
/// in order to compute the DFS path to each node. |
| 1545 | 1540 |
/// |
| 1546 | 1541 |
/// The algorithm computes |
| 1547 | 1542 |
/// - the %DFS tree, |
| 1548 | 1543 |
/// - the distance of each node from the root in the %DFS tree. |
| 1549 | 1544 |
/// |
| 1550 | 1545 |
/// \note <tt>d.run(s)</tt> is just a shortcut of the following code. |
| 1551 | 1546 |
///\code |
| 1552 | 1547 |
/// d.init(); |
| 1553 | 1548 |
/// d.addSource(s); |
| 1554 | 1549 |
/// d.start(); |
| 1555 | 1550 |
///\endcode |
| 1556 | 1551 |
void run(Node s) {
|
| 1557 | 1552 |
init(); |
| 1558 | 1553 |
addSource(s); |
| 1559 | 1554 |
start(); |
| 1560 | 1555 |
} |
| 1561 | 1556 |
|
| 1562 | 1557 |
/// \brief Finds the %DFS path between \c s and \c t. |
| 1563 | 1558 |
|
| 1564 | 1559 |
/// This method runs the %DFS algorithm from node \c s |
| 1565 | 1560 |
/// in order to compute the DFS path to node \c t |
| 1566 | 1561 |
/// (it stops searching when \c t is processed). |
| 1567 | 1562 |
/// |
| 1568 | 1563 |
/// \return \c true if \c t is reachable form \c s. |
| 1569 | 1564 |
/// |
| 1570 | 1565 |
/// \note Apart from the return value, <tt>d.run(s,t)</tt> is |
| 1571 | 1566 |
/// just a shortcut of the following code. |
| 1572 | 1567 |
///\code |
| 1573 | 1568 |
/// d.init(); |
| 1574 | 1569 |
/// d.addSource(s); |
| 1575 | 1570 |
/// d.start(t); |
| 1576 | 1571 |
///\endcode |
| 1577 | 1572 |
bool run(Node s,Node t) {
|
| 1578 | 1573 |
init(); |
| 1579 | 1574 |
addSource(s); |
| 1580 | 1575 |
start(t); |
| 1581 | 1576 |
return reached(t); |
| 1582 | 1577 |
} |
| 1583 | 1578 |
|
| 1584 | 1579 |
/// \brief Runs the algorithm to visit all nodes in the digraph. |
| 1585 | 1580 |
|
| 1586 | 1581 |
/// This method runs the %DFS algorithm in order to |
| 1587 | 1582 |
/// compute the %DFS path to each node. |
| 1588 | 1583 |
/// |
| 1589 | 1584 |
/// The algorithm computes |
| 1590 | 1585 |
/// - the %DFS tree (forest), |
| 1591 | 1586 |
/// - the distance of each node from the root(s) in the %DFS tree. |
| 1592 | 1587 |
/// |
| 1593 | 1588 |
/// \note <tt>d.run()</tt> is just a shortcut of the following code. |
| 1594 | 1589 |
///\code |
| 1595 | 1590 |
/// d.init(); |
| 1596 | 1591 |
/// for (NodeIt n(digraph); n != INVALID; ++n) {
|
| 1597 | 1592 |
/// if (!d.reached(n)) {
|
| 1598 | 1593 |
/// d.addSource(n); |
| 1599 | 1594 |
/// d.start(); |
| 1600 | 1595 |
/// } |
| 1601 | 1596 |
/// } |
| 1602 | 1597 |
///\endcode |
| 1603 | 1598 |
void run() {
|
| 1604 | 1599 |
init(); |
| 1605 | 1600 |
for (NodeIt it(*_digraph); it != INVALID; ++it) {
|
| 1606 | 1601 |
if (!reached(it)) {
|
| 1607 | 1602 |
addSource(it); |
| 1608 | 1603 |
start(); |
| 1609 | 1604 |
} |
| 1610 | 1605 |
} |
| 1611 | 1606 |
} |
| 1612 | 1607 |
|
| 1613 | 1608 |
///@} |
| 1614 | 1609 |
|
| 1615 | 1610 |
/// \name Query Functions |
| 1616 | 1611 |
/// The results of the DFS algorithm can be obtained using these |
| 1617 | 1612 |
/// functions.\n |
| 1618 | 1613 |
/// Either \ref run(Node) "run()" or \ref start() should be called |
| 1619 | 1614 |
/// before using them. |
| 1620 | 1615 |
|
| 1621 | 1616 |
///@{
|
| 1622 | 1617 |
|
| 1623 |
/// \brief Checks if |
|
| 1618 |
/// \brief Checks if the given node is reached from the root(s). |
|
| 1624 | 1619 |
/// |
| 1625 | 1620 |
/// Returns \c true if \c v is reached from the root(s). |
| 1626 | 1621 |
/// |
| 1627 | 1622 |
/// \pre Either \ref run(Node) "run()" or \ref init() |
| 1628 | 1623 |
/// must be called before using this function. |
| 1629 | 1624 |
bool reached(Node v) const { return (*_reached)[v]; }
|
| 1630 | 1625 |
|
| 1631 | 1626 |
///@} |
| 1632 | 1627 |
|
| 1633 | 1628 |
}; |
| 1634 | 1629 |
|
| 1635 | 1630 |
} //END OF NAMESPACE LEMON |
| 1636 | 1631 |
|
| 1637 | 1632 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_DIJKSTRA_H |
| 20 | 20 |
#define LEMON_DIJKSTRA_H |
| 21 | 21 |
|
| 22 | 22 |
///\ingroup shortest_path |
| 23 | 23 |
///\file |
| 24 | 24 |
///\brief Dijkstra algorithm. |
| 25 | 25 |
|
| 26 | 26 |
#include <limits> |
| 27 | 27 |
#include <lemon/list_graph.h> |
| 28 | 28 |
#include <lemon/bin_heap.h> |
| 29 | 29 |
#include <lemon/bits/path_dump.h> |
| 30 | 30 |
#include <lemon/core.h> |
| 31 | 31 |
#include <lemon/error.h> |
| 32 | 32 |
#include <lemon/maps.h> |
| 33 | 33 |
#include <lemon/path.h> |
| 34 | 34 |
|
| 35 | 35 |
namespace lemon {
|
| 36 | 36 |
|
| 37 | 37 |
/// \brief Default operation traits for the Dijkstra algorithm class. |
| 38 | 38 |
/// |
| 39 | 39 |
/// This operation traits class defines all computational operations and |
| 40 | 40 |
/// constants which are used in the Dijkstra algorithm. |
| 41 |
template <typename |
|
| 41 |
template <typename V> |
|
| 42 | 42 |
struct DijkstraDefaultOperationTraits {
|
| 43 |
/// \e |
|
| 44 |
typedef V Value; |
|
| 43 | 45 |
/// \brief Gives back the zero value of the type. |
| 44 | 46 |
static Value zero() {
|
| 45 | 47 |
return static_cast<Value>(0); |
| 46 | 48 |
} |
| 47 | 49 |
/// \brief Gives back the sum of the given two elements. |
| 48 | 50 |
static Value plus(const Value& left, const Value& right) {
|
| 49 | 51 |
return left + right; |
| 50 | 52 |
} |
| 51 | 53 |
/// \brief Gives back true only if the first value is less than the second. |
| 52 | 54 |
static bool less(const Value& left, const Value& right) {
|
| 53 | 55 |
return left < right; |
| 54 | 56 |
} |
| 55 | 57 |
}; |
| 56 | 58 |
|
| 57 | 59 |
///Default traits class of Dijkstra class. |
| 58 | 60 |
|
| 59 | 61 |
///Default traits class of Dijkstra class. |
| 60 | 62 |
///\tparam GR The type of the digraph. |
| 61 |
///\tparam LM The type of the length map. |
|
| 62 |
template<class GR, class LM> |
|
| 63 |
///\tparam LEN The type of the length map. |
|
| 64 |
template<typename GR, typename LEN> |
|
| 63 | 65 |
struct DijkstraDefaultTraits |
| 64 | 66 |
{
|
| 65 | 67 |
///The type of the digraph the algorithm runs on. |
| 66 | 68 |
typedef GR Digraph; |
| 67 | 69 |
|
| 68 | 70 |
///The type of the map that stores the arc lengths. |
| 69 | 71 |
|
| 70 | 72 |
///The type of the map that stores the arc lengths. |
| 71 |
///It must meet the \ref concepts::ReadMap "ReadMap" concept. |
|
| 72 |
typedef LM LengthMap; |
|
| 73 |
///The type of the length of the arcs. |
|
| 74 |
typedef typename LM::Value Value; |
|
| 73 |
///It must conform to the \ref concepts::ReadMap "ReadMap" concept. |
|
| 74 |
typedef LEN LengthMap; |
|
| 75 |
///The type of the arc lengths. |
|
| 76 |
typedef typename LEN::Value Value; |
|
| 75 | 77 |
|
| 76 |
/// Operation traits for Dijkstra algorithm. |
|
| 78 |
/// Operation traits for %Dijkstra algorithm. |
|
| 77 | 79 |
|
| 78 | 80 |
/// This class defines the operations that are used in the algorithm. |
| 79 | 81 |
/// \see DijkstraDefaultOperationTraits |
| 80 | 82 |
typedef DijkstraDefaultOperationTraits<Value> OperationTraits; |
| 81 | 83 |
|
| 82 | 84 |
/// The cross reference type used by the heap. |
| 83 | 85 |
|
| 84 | 86 |
/// The cross reference type used by the heap. |
| 85 | 87 |
/// Usually it is \c Digraph::NodeMap<int>. |
| 86 | 88 |
typedef typename Digraph::template NodeMap<int> HeapCrossRef; |
| 87 |
///Instantiates a \ |
|
| 89 |
///Instantiates a \c HeapCrossRef. |
|
| 88 | 90 |
|
| 89 | 91 |
///This function instantiates a \ref HeapCrossRef. |
| 90 | 92 |
/// \param g is the digraph, to which we would like to define the |
| 91 | 93 |
/// \ref HeapCrossRef. |
| 92 | 94 |
static HeapCrossRef *createHeapCrossRef(const Digraph &g) |
| 93 | 95 |
{
|
| 94 | 96 |
return new HeapCrossRef(g); |
| 95 | 97 |
} |
| 96 | 98 |
|
| 97 |
///The heap type used by the Dijkstra algorithm. |
|
| 99 |
///The heap type used by the %Dijkstra algorithm. |
|
| 98 | 100 |
|
| 99 | 101 |
///The heap type used by the Dijkstra algorithm. |
| 100 | 102 |
/// |
| 101 | 103 |
///\sa BinHeap |
| 102 | 104 |
///\sa Dijkstra |
| 103 |
typedef BinHeap<typename LM::Value, HeapCrossRef, std::less<Value> > Heap; |
|
| 104 |
///Instantiates a \ref Heap. |
|
| 105 |
typedef BinHeap<typename LEN::Value, HeapCrossRef, std::less<Value> > Heap; |
|
| 106 |
///Instantiates a \c Heap. |
|
| 105 | 107 |
|
| 106 | 108 |
///This function instantiates a \ref Heap. |
| 107 | 109 |
static Heap *createHeap(HeapCrossRef& r) |
| 108 | 110 |
{
|
| 109 | 111 |
return new Heap(r); |
| 110 | 112 |
} |
| 111 | 113 |
|
| 112 | 114 |
///\brief The type of the map that stores the predecessor |
| 113 | 115 |
///arcs of the shortest paths. |
| 114 | 116 |
/// |
| 115 | 117 |
///The type of the map that stores the predecessor |
| 116 | 118 |
///arcs of the shortest paths. |
| 117 |
///It must |
|
| 119 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 118 | 120 |
typedef typename Digraph::template NodeMap<typename Digraph::Arc> PredMap; |
| 119 |
///Instantiates a PredMap. |
|
| 121 |
///Instantiates a \c PredMap. |
|
| 120 | 122 |
|
| 121 |
///This function instantiates a PredMap. |
|
| 123 |
///This function instantiates a \ref PredMap. |
|
| 122 | 124 |
///\param g is the digraph, to which we would like to define the |
| 123 |
///PredMap. |
|
| 125 |
///\ref PredMap. |
|
| 124 | 126 |
static PredMap *createPredMap(const Digraph &g) |
| 125 | 127 |
{
|
| 126 | 128 |
return new PredMap(g); |
| 127 | 129 |
} |
| 128 | 130 |
|
| 129 | 131 |
///The type of the map that indicates which nodes are processed. |
| 130 | 132 |
|
| 131 | 133 |
///The type of the map that indicates which nodes are processed. |
| 132 |
///It must |
|
| 134 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 133 | 135 |
///By default it is a NullMap. |
| 134 | 136 |
typedef NullMap<typename Digraph::Node,bool> ProcessedMap; |
| 135 |
///Instantiates a ProcessedMap. |
|
| 137 |
///Instantiates a \c ProcessedMap. |
|
| 136 | 138 |
|
| 137 |
///This function instantiates a ProcessedMap. |
|
| 139 |
///This function instantiates a \ref ProcessedMap. |
|
| 138 | 140 |
///\param g is the digraph, to which |
| 139 |
///we would like to define the ProcessedMap |
|
| 141 |
///we would like to define the \ref ProcessedMap. |
|
| 140 | 142 |
#ifdef DOXYGEN |
| 141 | 143 |
static ProcessedMap *createProcessedMap(const Digraph &g) |
| 142 | 144 |
#else |
| 143 | 145 |
static ProcessedMap *createProcessedMap(const Digraph &) |
| 144 | 146 |
#endif |
| 145 | 147 |
{
|
| 146 | 148 |
return new ProcessedMap(); |
| 147 | 149 |
} |
| 148 | 150 |
|
| 149 | 151 |
///The type of the map that stores the distances of the nodes. |
| 150 | 152 |
|
| 151 | 153 |
///The type of the map that stores the distances of the nodes. |
| 152 |
///It must meet the \ref concepts::WriteMap "WriteMap" concept. |
|
| 153 |
typedef typename Digraph::template NodeMap<typename LM::Value> DistMap; |
|
| 154 |
/// |
|
| 154 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 155 |
typedef typename Digraph::template NodeMap<typename LEN::Value> DistMap; |
|
| 156 |
///Instantiates a \c DistMap. |
|
| 155 | 157 |
|
| 156 |
///This function instantiates a DistMap. |
|
| 158 |
///This function instantiates a \ref DistMap. |
|
| 157 | 159 |
///\param g is the digraph, to which we would like to define |
| 158 |
///the DistMap |
|
| 160 |
///the \ref DistMap. |
|
| 159 | 161 |
static DistMap *createDistMap(const Digraph &g) |
| 160 | 162 |
{
|
| 161 | 163 |
return new DistMap(g); |
| 162 | 164 |
} |
| 163 | 165 |
}; |
| 164 | 166 |
|
| 165 | 167 |
///%Dijkstra algorithm class. |
| 166 | 168 |
|
| 167 | 169 |
/// \ingroup shortest_path |
| 168 | 170 |
///This class provides an efficient implementation of the %Dijkstra algorithm. |
| 169 | 171 |
/// |
| 172 |
///The %Dijkstra algorithm solves the single-source shortest path problem |
|
| 173 |
///when all arc lengths are non-negative. If there are negative lengths, |
|
| 174 |
///the BellmanFord algorithm should be used instead. |
|
| 175 |
/// |
|
| 170 | 176 |
///The arc lengths are passed to the algorithm using a |
| 171 | 177 |
///\ref concepts::ReadMap "ReadMap", |
| 172 | 178 |
///so it is easy to change it to any kind of length. |
| 173 | 179 |
///The type of the length is determined by the |
| 174 | 180 |
///\ref concepts::ReadMap::Value "Value" of the length map. |
| 175 | 181 |
///It is also possible to change the underlying priority heap. |
| 176 | 182 |
/// |
| 177 | 183 |
///There is also a \ref dijkstra() "function-type interface" for the |
| 178 | 184 |
///%Dijkstra algorithm, which is convenient in the simplier cases and |
| 179 | 185 |
///it can be used easier. |
| 180 | 186 |
/// |
| 181 | 187 |
///\tparam GR The type of the digraph the algorithm runs on. |
| 182 | 188 |
///The default type is \ref ListDigraph. |
| 183 |
///\tparam |
|
| 189 |
///\tparam LEN A \ref concepts::ReadMap "readable" arc map that specifies |
|
| 184 | 190 |
///the lengths of the arcs. |
| 185 | 191 |
///It is read once for each arc, so the map may involve in |
| 186 | 192 |
///relatively time consuming process to compute the arc lengths if |
| 187 | 193 |
///it is necessary. The default map type is \ref |
| 188 | 194 |
///concepts::Digraph::ArcMap "GR::ArcMap<int>". |
| 189 | 195 |
#ifdef DOXYGEN |
| 190 |
template <typename GR, typename |
|
| 196 |
template <typename GR, typename LEN, typename TR> |
|
| 191 | 197 |
#else |
| 192 | 198 |
template <typename GR=ListDigraph, |
| 193 |
typename LM=typename GR::template ArcMap<int>, |
|
| 194 |
typename TR=DijkstraDefaultTraits<GR,LM> > |
|
| 199 |
typename LEN=typename GR::template ArcMap<int>, |
|
| 200 |
typename TR=DijkstraDefaultTraits<GR,LEN> > |
|
| 195 | 201 |
#endif |
| 196 | 202 |
class Dijkstra {
|
| 197 | 203 |
public: |
| 198 | 204 |
|
| 199 | 205 |
///The type of the digraph the algorithm runs on. |
| 200 | 206 |
typedef typename TR::Digraph Digraph; |
| 201 | 207 |
|
| 202 |
///The type of the |
|
| 208 |
///The type of the arc lengths. |
|
| 203 | 209 |
typedef typename TR::LengthMap::Value Value; |
| 204 | 210 |
///The type of the map that stores the arc lengths. |
| 205 | 211 |
typedef typename TR::LengthMap LengthMap; |
| 206 | 212 |
///\brief The type of the map that stores the predecessor arcs of the |
| 207 | 213 |
///shortest paths. |
| 208 | 214 |
typedef typename TR::PredMap PredMap; |
| 209 | 215 |
///The type of the map that stores the distances of the nodes. |
| 210 | 216 |
typedef typename TR::DistMap DistMap; |
| 211 | 217 |
///The type of the map that indicates which nodes are processed. |
| 212 | 218 |
typedef typename TR::ProcessedMap ProcessedMap; |
| 213 | 219 |
///The type of the paths. |
| 214 | 220 |
typedef PredMapPath<Digraph, PredMap> Path; |
| 215 | 221 |
///The cross reference type used for the current heap. |
| 216 | 222 |
typedef typename TR::HeapCrossRef HeapCrossRef; |
| 217 | 223 |
///The heap type used by the algorithm. |
| 218 | 224 |
typedef typename TR::Heap Heap; |
| 219 |
///The operation traits class |
|
| 225 |
///\brief The \ref DijkstraDefaultOperationTraits "operation traits class" |
|
| 226 |
///of the algorithm. |
|
| 220 | 227 |
typedef typename TR::OperationTraits OperationTraits; |
| 221 | 228 |
|
| 222 | 229 |
///The \ref DijkstraDefaultTraits "traits class" of the algorithm. |
| 223 | 230 |
typedef TR Traits; |
| 224 | 231 |
|
| 225 | 232 |
private: |
| 226 | 233 |
|
| 227 | 234 |
typedef typename Digraph::Node Node; |
| 228 | 235 |
typedef typename Digraph::NodeIt NodeIt; |
| 229 | 236 |
typedef typename Digraph::Arc Arc; |
| 230 | 237 |
typedef typename Digraph::OutArcIt OutArcIt; |
| 231 | 238 |
|
| 232 | 239 |
//Pointer to the underlying digraph. |
| 233 | 240 |
const Digraph *G; |
| 234 | 241 |
//Pointer to the length map. |
| 235 |
const LengthMap * |
|
| 242 |
const LengthMap *_length; |
|
| 236 | 243 |
//Pointer to the map of predecessors arcs. |
| 237 | 244 |
PredMap *_pred; |
| 238 | 245 |
//Indicates if _pred is locally allocated (true) or not. |
| 239 | 246 |
bool local_pred; |
| 240 | 247 |
//Pointer to the map of distances. |
| 241 | 248 |
DistMap *_dist; |
| 242 | 249 |
//Indicates if _dist is locally allocated (true) or not. |
| 243 | 250 |
bool local_dist; |
| 244 | 251 |
//Pointer to the map of processed status of the nodes. |
| 245 | 252 |
ProcessedMap *_processed; |
| 246 | 253 |
//Indicates if _processed is locally allocated (true) or not. |
| 247 | 254 |
bool local_processed; |
| 248 | 255 |
//Pointer to the heap cross references. |
| 249 | 256 |
HeapCrossRef *_heap_cross_ref; |
| 250 | 257 |
//Indicates if _heap_cross_ref is locally allocated (true) or not. |
| 251 | 258 |
bool local_heap_cross_ref; |
| 252 | 259 |
//Pointer to the heap. |
| 253 | 260 |
Heap *_heap; |
| 254 | 261 |
//Indicates if _heap is locally allocated (true) or not. |
| 255 | 262 |
bool local_heap; |
| 256 | 263 |
|
| 257 | 264 |
//Creates the maps if necessary. |
| 258 | 265 |
void create_maps() |
| 259 | 266 |
{
|
| 260 | 267 |
if(!_pred) {
|
| 261 | 268 |
local_pred = true; |
| 262 | 269 |
_pred = Traits::createPredMap(*G); |
| 263 | 270 |
} |
| 264 | 271 |
if(!_dist) {
|
| 265 | 272 |
local_dist = true; |
| 266 | 273 |
_dist = Traits::createDistMap(*G); |
| 267 | 274 |
} |
| 268 | 275 |
if(!_processed) {
|
| 269 | 276 |
local_processed = true; |
| 270 | 277 |
_processed = Traits::createProcessedMap(*G); |
| 271 | 278 |
} |
| 272 | 279 |
if (!_heap_cross_ref) {
|
| 273 | 280 |
local_heap_cross_ref = true; |
| 274 | 281 |
_heap_cross_ref = Traits::createHeapCrossRef(*G); |
| 275 | 282 |
} |
| 276 | 283 |
if (!_heap) {
|
| 277 | 284 |
local_heap = true; |
| 278 | 285 |
_heap = Traits::createHeap(*_heap_cross_ref); |
| 279 | 286 |
} |
| 280 | 287 |
} |
| 281 | 288 |
|
| 282 | 289 |
public: |
| 283 | 290 |
|
| 284 | 291 |
typedef Dijkstra Create; |
| 285 | 292 |
|
| 286 |
///\name Named |
|
| 293 |
///\name Named Template Parameters |
|
| 287 | 294 |
|
| 288 | 295 |
///@{
|
| 289 | 296 |
|
| 290 | 297 |
template <class T> |
| 291 | 298 |
struct SetPredMapTraits : public Traits {
|
| 292 | 299 |
typedef T PredMap; |
| 293 | 300 |
static PredMap *createPredMap(const Digraph &) |
| 294 | 301 |
{
|
| 295 | 302 |
LEMON_ASSERT(false, "PredMap is not initialized"); |
| 296 | 303 |
return 0; // ignore warnings |
| 297 | 304 |
} |
| 298 | 305 |
}; |
| 299 | 306 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 300 |
///PredMap type. |
|
| 307 |
///\c PredMap type. |
|
| 301 | 308 |
/// |
| 302 | 309 |
///\ref named-templ-param "Named parameter" for setting |
| 303 |
///PredMap type. |
|
| 304 |
///It must meet the \ref concepts::WriteMap "WriteMap" concept. |
|
| 310 |
///\c PredMap type. |
|
| 311 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 305 | 312 |
template <class T> |
| 306 | 313 |
struct SetPredMap |
| 307 | 314 |
: public Dijkstra< Digraph, LengthMap, SetPredMapTraits<T> > {
|
| 308 | 315 |
typedef Dijkstra< Digraph, LengthMap, SetPredMapTraits<T> > Create; |
| 309 | 316 |
}; |
| 310 | 317 |
|
| 311 | 318 |
template <class T> |
| 312 | 319 |
struct SetDistMapTraits : public Traits {
|
| 313 | 320 |
typedef T DistMap; |
| 314 | 321 |
static DistMap *createDistMap(const Digraph &) |
| 315 | 322 |
{
|
| 316 | 323 |
LEMON_ASSERT(false, "DistMap is not initialized"); |
| 317 | 324 |
return 0; // ignore warnings |
| 318 | 325 |
} |
| 319 | 326 |
}; |
| 320 | 327 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 321 |
///DistMap type. |
|
| 328 |
///\c DistMap type. |
|
| 322 | 329 |
/// |
| 323 | 330 |
///\ref named-templ-param "Named parameter" for setting |
| 324 |
///DistMap type. |
|
| 325 |
///It must meet the \ref concepts::WriteMap "WriteMap" concept. |
|
| 331 |
///\c DistMap type. |
|
| 332 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 326 | 333 |
template <class T> |
| 327 | 334 |
struct SetDistMap |
| 328 | 335 |
: public Dijkstra< Digraph, LengthMap, SetDistMapTraits<T> > {
|
| 329 | 336 |
typedef Dijkstra< Digraph, LengthMap, SetDistMapTraits<T> > Create; |
| 330 | 337 |
}; |
| 331 | 338 |
|
| 332 | 339 |
template <class T> |
| 333 | 340 |
struct SetProcessedMapTraits : public Traits {
|
| 334 | 341 |
typedef T ProcessedMap; |
| 335 | 342 |
static ProcessedMap *createProcessedMap(const Digraph &) |
| 336 | 343 |
{
|
| 337 | 344 |
LEMON_ASSERT(false, "ProcessedMap is not initialized"); |
| 338 | 345 |
return 0; // ignore warnings |
| 339 | 346 |
} |
| 340 | 347 |
}; |
| 341 | 348 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 342 |
///ProcessedMap type. |
|
| 349 |
///\c ProcessedMap type. |
|
| 343 | 350 |
/// |
| 344 | 351 |
///\ref named-templ-param "Named parameter" for setting |
| 345 |
///ProcessedMap type. |
|
| 346 |
///It must meet the \ref concepts::WriteMap "WriteMap" concept. |
|
| 352 |
///\c ProcessedMap type. |
|
| 353 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 347 | 354 |
template <class T> |
| 348 | 355 |
struct SetProcessedMap |
| 349 | 356 |
: public Dijkstra< Digraph, LengthMap, SetProcessedMapTraits<T> > {
|
| 350 | 357 |
typedef Dijkstra< Digraph, LengthMap, SetProcessedMapTraits<T> > Create; |
| 351 | 358 |
}; |
| 352 | 359 |
|
| 353 | 360 |
struct SetStandardProcessedMapTraits : public Traits {
|
| 354 | 361 |
typedef typename Digraph::template NodeMap<bool> ProcessedMap; |
| 355 | 362 |
static ProcessedMap *createProcessedMap(const Digraph &g) |
| 356 | 363 |
{
|
| 357 | 364 |
return new ProcessedMap(g); |
| 358 | 365 |
} |
| 359 | 366 |
}; |
| 360 | 367 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 361 |
///ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>. |
|
| 368 |
///\c ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>. |
|
| 362 | 369 |
/// |
| 363 | 370 |
///\ref named-templ-param "Named parameter" for setting |
| 364 |
///ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>. |
|
| 371 |
///\c ProcessedMap type to be <tt>Digraph::NodeMap<bool></tt>. |
|
| 365 | 372 |
///If you don't set it explicitly, it will be automatically allocated. |
| 366 | 373 |
struct SetStandardProcessedMap |
| 367 | 374 |
: public Dijkstra< Digraph, LengthMap, SetStandardProcessedMapTraits > {
|
| 368 | 375 |
typedef Dijkstra< Digraph, LengthMap, SetStandardProcessedMapTraits > |
| 369 | 376 |
Create; |
| 370 | 377 |
}; |
| 371 | 378 |
|
| 372 | 379 |
template <class H, class CR> |
| 373 | 380 |
struct SetHeapTraits : public Traits {
|
| 374 | 381 |
typedef CR HeapCrossRef; |
| 375 | 382 |
typedef H Heap; |
| 376 | 383 |
static HeapCrossRef *createHeapCrossRef(const Digraph &) {
|
| 377 | 384 |
LEMON_ASSERT(false, "HeapCrossRef is not initialized"); |
| 378 | 385 |
return 0; // ignore warnings |
| 379 | 386 |
} |
| 380 | 387 |
static Heap *createHeap(HeapCrossRef &) |
| 381 | 388 |
{
|
| 382 | 389 |
LEMON_ASSERT(false, "Heap is not initialized"); |
| 383 | 390 |
return 0; // ignore warnings |
| 384 | 391 |
} |
| 385 | 392 |
}; |
| 386 | 393 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 387 | 394 |
///heap and cross reference types |
| 388 | 395 |
/// |
| 389 | 396 |
///\ref named-templ-param "Named parameter" for setting heap and cross |
| 390 | 397 |
///reference types. If this named parameter is used, then external |
| 391 | 398 |
///heap and cross reference objects must be passed to the algorithm |
| 392 | 399 |
///using the \ref heap() function before calling \ref run(Node) "run()" |
| 393 | 400 |
///or \ref init(). |
| 394 | 401 |
///\sa SetStandardHeap |
| 395 | 402 |
template <class H, class CR = typename Digraph::template NodeMap<int> > |
| 396 | 403 |
struct SetHeap |
| 397 | 404 |
: public Dijkstra< Digraph, LengthMap, SetHeapTraits<H, CR> > {
|
| 398 | 405 |
typedef Dijkstra< Digraph, LengthMap, SetHeapTraits<H, CR> > Create; |
| 399 | 406 |
}; |
| 400 | 407 |
|
| 401 | 408 |
template <class H, class CR> |
| 402 | 409 |
struct SetStandardHeapTraits : public Traits {
|
| 403 | 410 |
typedef CR HeapCrossRef; |
| 404 | 411 |
typedef H Heap; |
| 405 | 412 |
static HeapCrossRef *createHeapCrossRef(const Digraph &G) {
|
| 406 | 413 |
return new HeapCrossRef(G); |
| 407 | 414 |
} |
| 408 | 415 |
static Heap *createHeap(HeapCrossRef &R) |
| 409 | 416 |
{
|
| 410 | 417 |
return new Heap(R); |
| 411 | 418 |
} |
| 412 | 419 |
}; |
| 413 | 420 |
///\brief \ref named-templ-param "Named parameter" for setting |
| 414 | 421 |
///heap and cross reference types with automatic allocation |
| 415 | 422 |
/// |
| 416 | 423 |
///\ref named-templ-param "Named parameter" for setting heap and cross |
| 417 | 424 |
///reference types with automatic allocation. |
| 418 | 425 |
///They should have standard constructor interfaces to be able to |
| 419 | 426 |
///automatically created by the algorithm (i.e. the digraph should be |
| 420 | 427 |
///passed to the constructor of the cross reference and the cross |
| 421 | 428 |
///reference should be passed to the constructor of the heap). |
| 422 | 429 |
///However external heap and cross reference objects could also be |
| 423 | 430 |
///passed to the algorithm using the \ref heap() function before |
| 424 | 431 |
///calling \ref run(Node) "run()" or \ref init(). |
| 425 | 432 |
///\sa SetHeap |
| 426 | 433 |
template <class H, class CR = typename Digraph::template NodeMap<int> > |
| 427 | 434 |
struct SetStandardHeap |
| 428 | 435 |
: public Dijkstra< Digraph, LengthMap, SetStandardHeapTraits<H, CR> > {
|
| 429 | 436 |
typedef Dijkstra< Digraph, LengthMap, SetStandardHeapTraits<H, CR> > |
| 430 | 437 |
Create; |
| 431 | 438 |
}; |
| 432 | 439 |
|
| 433 | 440 |
template <class T> |
| 434 | 441 |
struct SetOperationTraitsTraits : public Traits {
|
| 435 | 442 |
typedef T OperationTraits; |
| 436 | 443 |
}; |
| 437 | 444 |
|
| 438 | 445 |
/// \brief \ref named-templ-param "Named parameter" for setting |
| 439 | 446 |
///\c OperationTraits type |
| 440 | 447 |
/// |
| 441 | 448 |
///\ref named-templ-param "Named parameter" for setting |
| 442 |
///\ |
|
| 449 |
///\c OperationTraits type. |
|
| 450 |
/// For more information see \ref DijkstraDefaultOperationTraits. |
|
| 443 | 451 |
template <class T> |
| 444 | 452 |
struct SetOperationTraits |
| 445 | 453 |
: public Dijkstra<Digraph, LengthMap, SetOperationTraitsTraits<T> > {
|
| 446 | 454 |
typedef Dijkstra<Digraph, LengthMap, SetOperationTraitsTraits<T> > |
| 447 | 455 |
Create; |
| 448 | 456 |
}; |
| 449 | 457 |
|
| 450 | 458 |
///@} |
| 451 | 459 |
|
| 452 | 460 |
protected: |
| 453 | 461 |
|
| 454 | 462 |
Dijkstra() {}
|
| 455 | 463 |
|
| 456 | 464 |
public: |
| 457 | 465 |
|
| 458 | 466 |
///Constructor. |
| 459 | 467 |
|
| 460 | 468 |
///Constructor. |
| 461 |
///\param _g The digraph the algorithm runs on. |
|
| 462 |
///\param _length The length map used by the algorithm. |
|
| 463 |
Dijkstra(const Digraph& _g, const LengthMap& _length) : |
|
| 464 |
G(&_g), length(&_length), |
|
| 469 |
///\param g The digraph the algorithm runs on. |
|
| 470 |
///\param length The length map used by the algorithm. |
|
| 471 |
Dijkstra(const Digraph& g, const LengthMap& length) : |
|
| 472 |
G(&g), _length(&length), |
|
| 465 | 473 |
_pred(NULL), local_pred(false), |
| 466 | 474 |
_dist(NULL), local_dist(false), |
| 467 | 475 |
_processed(NULL), local_processed(false), |
| 468 | 476 |
_heap_cross_ref(NULL), local_heap_cross_ref(false), |
| 469 | 477 |
_heap(NULL), local_heap(false) |
| 470 | 478 |
{ }
|
| 471 | 479 |
|
| 472 | 480 |
///Destructor. |
| 473 | 481 |
~Dijkstra() |
| 474 | 482 |
{
|
| 475 | 483 |
if(local_pred) delete _pred; |
| 476 | 484 |
if(local_dist) delete _dist; |
| 477 | 485 |
if(local_processed) delete _processed; |
| 478 | 486 |
if(local_heap_cross_ref) delete _heap_cross_ref; |
| 479 | 487 |
if(local_heap) delete _heap; |
| 480 | 488 |
} |
| 481 | 489 |
|
| 482 | 490 |
///Sets the length map. |
| 483 | 491 |
|
| 484 | 492 |
///Sets the length map. |
| 485 | 493 |
///\return <tt> (*this) </tt> |
| 486 | 494 |
Dijkstra &lengthMap(const LengthMap &m) |
| 487 | 495 |
{
|
| 488 |
|
|
| 496 |
_length = &m; |
|
| 489 | 497 |
return *this; |
| 490 | 498 |
} |
| 491 | 499 |
|
| 492 | 500 |
///Sets the map that stores the predecessor arcs. |
| 493 | 501 |
|
| 494 | 502 |
///Sets the map that stores the predecessor arcs. |
| 495 | 503 |
///If you don't use this function before calling \ref run(Node) "run()" |
| 496 | 504 |
///or \ref init(), an instance will be allocated automatically. |
| 497 | 505 |
///The destructor deallocates this automatically allocated map, |
| 498 | 506 |
///of course. |
| 499 | 507 |
///\return <tt> (*this) </tt> |
| 500 | 508 |
Dijkstra &predMap(PredMap &m) |
| 501 | 509 |
{
|
| 502 | 510 |
if(local_pred) {
|
| 503 | 511 |
delete _pred; |
| 504 | 512 |
local_pred=false; |
| 505 | 513 |
} |
| 506 | 514 |
_pred = &m; |
| 507 | 515 |
return *this; |
| 508 | 516 |
} |
| 509 | 517 |
|
| 510 | 518 |
///Sets the map that indicates which nodes are processed. |
| 511 | 519 |
|
| 512 | 520 |
///Sets the map that indicates which nodes are processed. |
| 513 | 521 |
///If you don't use this function before calling \ref run(Node) "run()" |
| 514 | 522 |
///or \ref init(), an instance will be allocated automatically. |
| 515 | 523 |
///The destructor deallocates this automatically allocated map, |
| 516 | 524 |
///of course. |
| 517 | 525 |
///\return <tt> (*this) </tt> |
| 518 | 526 |
Dijkstra &processedMap(ProcessedMap &m) |
| 519 | 527 |
{
|
| 520 | 528 |
if(local_processed) {
|
| 521 | 529 |
delete _processed; |
| 522 | 530 |
local_processed=false; |
| 523 | 531 |
} |
| 524 | 532 |
_processed = &m; |
| 525 | 533 |
return *this; |
| 526 | 534 |
} |
| 527 | 535 |
|
| 528 | 536 |
///Sets the map that stores the distances of the nodes. |
| 529 | 537 |
|
| 530 | 538 |
///Sets the map that stores the distances of the nodes calculated by the |
| 531 | 539 |
///algorithm. |
| 532 | 540 |
///If you don't use this function before calling \ref run(Node) "run()" |
| 533 | 541 |
///or \ref init(), an instance will be allocated automatically. |
| 534 | 542 |
///The destructor deallocates this automatically allocated map, |
| 535 | 543 |
///of course. |
| 536 | 544 |
///\return <tt> (*this) </tt> |
| 537 | 545 |
Dijkstra &distMap(DistMap &m) |
| 538 | 546 |
{
|
| 539 | 547 |
if(local_dist) {
|
| 540 | 548 |
delete _dist; |
| 541 | 549 |
local_dist=false; |
| 542 | 550 |
} |
| 543 | 551 |
_dist = &m; |
| 544 | 552 |
return *this; |
| 545 | 553 |
} |
| 546 | 554 |
|
| 547 | 555 |
///Sets the heap and the cross reference used by algorithm. |
| 548 | 556 |
|
| 549 | 557 |
///Sets the heap and the cross reference used by algorithm. |
| 550 | 558 |
///If you don't use this function before calling \ref run(Node) "run()" |
| 551 | 559 |
///or \ref init(), heap and cross reference instances will be |
| 552 | 560 |
///allocated automatically. |
| 553 | 561 |
///The destructor deallocates these automatically allocated objects, |
| 554 | 562 |
///of course. |
| 555 | 563 |
///\return <tt> (*this) </tt> |
| 556 | 564 |
Dijkstra &heap(Heap& hp, HeapCrossRef &cr) |
| 557 | 565 |
{
|
| 558 | 566 |
if(local_heap_cross_ref) {
|
| 559 | 567 |
delete _heap_cross_ref; |
| 560 | 568 |
local_heap_cross_ref=false; |
| 561 | 569 |
} |
| 562 | 570 |
_heap_cross_ref = &cr; |
| 563 | 571 |
if(local_heap) {
|
| 564 | 572 |
delete _heap; |
| 565 | 573 |
local_heap=false; |
| 566 | 574 |
} |
| 567 | 575 |
_heap = &hp; |
| 568 | 576 |
return *this; |
| 569 | 577 |
} |
| 570 | 578 |
|
| 571 | 579 |
private: |
| 572 | 580 |
|
| 573 | 581 |
void finalizeNodeData(Node v,Value dst) |
| 574 | 582 |
{
|
| 575 | 583 |
_processed->set(v,true); |
| 576 | 584 |
_dist->set(v, dst); |
| 577 | 585 |
} |
| 578 | 586 |
|
| 579 | 587 |
public: |
| 580 | 588 |
|
| 581 | 589 |
///\name Execution Control |
| 582 | 590 |
///The simplest way to execute the %Dijkstra algorithm is to use |
| 583 | 591 |
///one of the member functions called \ref run(Node) "run()".\n |
| 584 |
///If you need more control on the execution, first you have to call |
|
| 585 |
///\ref init(), then you can add several source nodes with |
|
| 592 |
///If you need better control on the execution, you have to call |
|
| 593 |
///\ref init() first, then you can add several source nodes with |
|
| 586 | 594 |
///\ref addSource(). Finally the actual path computation can be |
| 587 | 595 |
///performed with one of the \ref start() functions. |
| 588 | 596 |
|
| 589 | 597 |
///@{
|
| 590 | 598 |
|
| 591 | 599 |
///\brief Initializes the internal data structures. |
| 592 | 600 |
/// |
| 593 | 601 |
///Initializes the internal data structures. |
| 594 | 602 |
void init() |
| 595 | 603 |
{
|
| 596 | 604 |
create_maps(); |
| 597 | 605 |
_heap->clear(); |
| 598 | 606 |
for ( NodeIt u(*G) ; u!=INVALID ; ++u ) {
|
| 599 | 607 |
_pred->set(u,INVALID); |
| 600 | 608 |
_processed->set(u,false); |
| 601 | 609 |
_heap_cross_ref->set(u,Heap::PRE_HEAP); |
| 602 | 610 |
} |
| 603 | 611 |
} |
| 604 | 612 |
|
| 605 | 613 |
///Adds a new source node. |
| 606 | 614 |
|
| 607 | 615 |
///Adds a new source node to the priority heap. |
| 608 | 616 |
///The optional second parameter is the initial distance of the node. |
| 609 | 617 |
/// |
| 610 | 618 |
///The function checks if the node has already been added to the heap and |
| 611 | 619 |
///it is pushed to the heap only if either it was not in the heap |
| 612 | 620 |
///or the shortest path found till then is shorter than \c dst. |
| 613 | 621 |
void addSource(Node s,Value dst=OperationTraits::zero()) |
| 614 | 622 |
{
|
| 615 | 623 |
if(_heap->state(s) != Heap::IN_HEAP) {
|
| 616 | 624 |
_heap->push(s,dst); |
| 617 | 625 |
} else if(OperationTraits::less((*_heap)[s], dst)) {
|
| 618 | 626 |
_heap->set(s,dst); |
| 619 | 627 |
_pred->set(s,INVALID); |
| 620 | 628 |
} |
| 621 | 629 |
} |
| 622 | 630 |
|
| 623 | 631 |
///Processes the next node in the priority heap |
| 624 | 632 |
|
| 625 | 633 |
///Processes the next node in the priority heap. |
| 626 | 634 |
/// |
| 627 | 635 |
///\return The processed node. |
| 628 | 636 |
/// |
| 629 | 637 |
///\warning The priority heap must not be empty. |
| 630 | 638 |
Node processNextNode() |
| 631 | 639 |
{
|
| 632 | 640 |
Node v=_heap->top(); |
| 633 | 641 |
Value oldvalue=_heap->prio(); |
| 634 | 642 |
_heap->pop(); |
| 635 | 643 |
finalizeNodeData(v,oldvalue); |
| 636 | 644 |
|
| 637 | 645 |
for(OutArcIt e(*G,v); e!=INVALID; ++e) {
|
| 638 | 646 |
Node w=G->target(e); |
| 639 | 647 |
switch(_heap->state(w)) {
|
| 640 | 648 |
case Heap::PRE_HEAP: |
| 641 |
_heap->push(w,OperationTraits::plus(oldvalue, (* |
|
| 649 |
_heap->push(w,OperationTraits::plus(oldvalue, (*_length)[e])); |
|
| 642 | 650 |
_pred->set(w,e); |
| 643 | 651 |
break; |
| 644 | 652 |
case Heap::IN_HEAP: |
| 645 | 653 |
{
|
| 646 |
Value newvalue = OperationTraits::plus(oldvalue, (* |
|
| 654 |
Value newvalue = OperationTraits::plus(oldvalue, (*_length)[e]); |
|
| 647 | 655 |
if ( OperationTraits::less(newvalue, (*_heap)[w]) ) {
|
| 648 | 656 |
_heap->decrease(w, newvalue); |
| 649 | 657 |
_pred->set(w,e); |
| 650 | 658 |
} |
| 651 | 659 |
} |
| 652 | 660 |
break; |
| 653 | 661 |
case Heap::POST_HEAP: |
| 654 | 662 |
break; |
| 655 | 663 |
} |
| 656 | 664 |
} |
| 657 | 665 |
return v; |
| 658 | 666 |
} |
| 659 | 667 |
|
| 660 | 668 |
///The next node to be processed. |
| 661 | 669 |
|
| 662 | 670 |
///Returns the next node to be processed or \c INVALID if the |
| 663 | 671 |
///priority heap is empty. |
| 664 | 672 |
Node nextNode() const |
| 665 | 673 |
{
|
| 666 | 674 |
return !_heap->empty()?_heap->top():INVALID; |
| 667 | 675 |
} |
| 668 | 676 |
|
| 669 | 677 |
///Returns \c false if there are nodes to be processed. |
| 670 | 678 |
|
| 671 | 679 |
///Returns \c false if there are nodes to be processed |
| 672 | 680 |
///in the priority heap. |
| 673 | 681 |
bool emptyQueue() const { return _heap->empty(); }
|
| 674 | 682 |
|
| 675 | 683 |
///Returns the number of the nodes to be processed. |
| 676 | 684 |
|
| 677 | 685 |
///Returns the number of the nodes to be processed |
| 678 | 686 |
///in the priority heap. |
| 679 | 687 |
int queueSize() const { return _heap->size(); }
|
| 680 | 688 |
|
| 681 | 689 |
///Executes the algorithm. |
| 682 | 690 |
|
| 683 | 691 |
///Executes the algorithm. |
| 684 | 692 |
/// |
| 685 | 693 |
///This method runs the %Dijkstra algorithm from the root node(s) |
| 686 | 694 |
///in order to compute the shortest path to each node. |
| 687 | 695 |
/// |
| 688 | 696 |
///The algorithm computes |
| 689 | 697 |
///- the shortest path tree (forest), |
| 690 | 698 |
///- the distance of each node from the root(s). |
| 691 | 699 |
/// |
| 692 | 700 |
///\pre init() must be called and at least one root node should be |
| 693 | 701 |
///added with addSource() before using this function. |
| 694 | 702 |
/// |
| 695 | 703 |
///\note <tt>d.start()</tt> is just a shortcut of the following code. |
| 696 | 704 |
///\code |
| 697 | 705 |
/// while ( !d.emptyQueue() ) {
|
| 698 | 706 |
/// d.processNextNode(); |
| 699 | 707 |
/// } |
| 700 | 708 |
///\endcode |
| 701 | 709 |
void start() |
| 702 | 710 |
{
|
| 703 | 711 |
while ( !emptyQueue() ) processNextNode(); |
| 704 | 712 |
} |
| 705 | 713 |
|
| 706 | 714 |
///Executes the algorithm until the given target node is processed. |
| 707 | 715 |
|
| 708 | 716 |
///Executes the algorithm until the given target node is processed. |
| 709 | 717 |
/// |
| 710 | 718 |
///This method runs the %Dijkstra algorithm from the root node(s) |
| 711 | 719 |
///in order to compute the shortest path to \c t. |
| 712 | 720 |
/// |
| 713 | 721 |
///The algorithm computes |
| 714 | 722 |
///- the shortest path to \c t, |
| 715 | 723 |
///- the distance of \c t from the root(s). |
| 716 | 724 |
/// |
| 717 | 725 |
///\pre init() must be called and at least one root node should be |
| 718 | 726 |
///added with addSource() before using this function. |
| 719 | 727 |
void start(Node t) |
| 720 | 728 |
{
|
| 721 | 729 |
while ( !_heap->empty() && _heap->top()!=t ) processNextNode(); |
| 722 | 730 |
if ( !_heap->empty() ) {
|
| 723 | 731 |
finalizeNodeData(_heap->top(),_heap->prio()); |
| 724 | 732 |
_heap->pop(); |
| 725 | 733 |
} |
| 726 | 734 |
} |
| 727 | 735 |
|
| 728 | 736 |
///Executes the algorithm until a condition is met. |
| 729 | 737 |
|
| 730 | 738 |
///Executes the algorithm until a condition is met. |
| 731 | 739 |
/// |
| 732 | 740 |
///This method runs the %Dijkstra algorithm from the root node(s) in |
| 733 | 741 |
///order to compute the shortest path to a node \c v with |
| 734 | 742 |
/// <tt>nm[v]</tt> true, if such a node can be found. |
| 735 | 743 |
/// |
| 736 | 744 |
///\param nm A \c bool (or convertible) node map. The algorithm |
| 737 | 745 |
///will stop when it reaches a node \c v with <tt>nm[v]</tt> true. |
| 738 | 746 |
/// |
| 739 | 747 |
///\return The reached node \c v with <tt>nm[v]</tt> true or |
| 740 | 748 |
///\c INVALID if no such node was found. |
| 741 | 749 |
/// |
| 742 | 750 |
///\pre init() must be called and at least one root node should be |
| 743 | 751 |
///added with addSource() before using this function. |
| 744 | 752 |
template<class NodeBoolMap> |
| 745 | 753 |
Node start(const NodeBoolMap &nm) |
| 746 | 754 |
{
|
| 747 | 755 |
while ( !_heap->empty() && !nm[_heap->top()] ) processNextNode(); |
| 748 | 756 |
if ( _heap->empty() ) return INVALID; |
| 749 | 757 |
finalizeNodeData(_heap->top(),_heap->prio()); |
| 750 | 758 |
return _heap->top(); |
| 751 | 759 |
} |
| 752 | 760 |
|
| 753 | 761 |
///Runs the algorithm from the given source node. |
| 754 | 762 |
|
| 755 | 763 |
///This method runs the %Dijkstra algorithm from node \c s |
| 756 | 764 |
///in order to compute the shortest path to each node. |
| 757 | 765 |
/// |
| 758 | 766 |
///The algorithm computes |
| 759 | 767 |
///- the shortest path tree, |
| 760 | 768 |
///- the distance of each node from the root. |
| 761 | 769 |
/// |
| 762 | 770 |
///\note <tt>d.run(s)</tt> is just a shortcut of the following code. |
| 763 | 771 |
///\code |
| 764 | 772 |
/// d.init(); |
| 765 | 773 |
/// d.addSource(s); |
| 766 | 774 |
/// d.start(); |
| 767 | 775 |
///\endcode |
| 768 | 776 |
void run(Node s) {
|
| 769 | 777 |
init(); |
| 770 | 778 |
addSource(s); |
| 771 | 779 |
start(); |
| 772 | 780 |
} |
| 773 | 781 |
|
| 774 | 782 |
///Finds the shortest path between \c s and \c t. |
| 775 | 783 |
|
| 776 | 784 |
///This method runs the %Dijkstra algorithm from node \c s |
| 777 | 785 |
///in order to compute the shortest path to node \c t |
| 778 | 786 |
///(it stops searching when \c t is processed). |
| 779 | 787 |
/// |
| 780 | 788 |
///\return \c true if \c t is reachable form \c s. |
| 781 | 789 |
/// |
| 782 | 790 |
///\note Apart from the return value, <tt>d.run(s,t)</tt> is just a |
| 783 | 791 |
///shortcut of the following code. |
| 784 | 792 |
///\code |
| 785 | 793 |
/// d.init(); |
| 786 | 794 |
/// d.addSource(s); |
| 787 | 795 |
/// d.start(t); |
| 788 | 796 |
///\endcode |
| 789 | 797 |
bool run(Node s,Node t) {
|
| 790 | 798 |
init(); |
| 791 | 799 |
addSource(s); |
| 792 | 800 |
start(t); |
| 793 | 801 |
return (*_heap_cross_ref)[t] == Heap::POST_HEAP; |
| 794 | 802 |
} |
| 795 | 803 |
|
| 796 | 804 |
///@} |
| 797 | 805 |
|
| 798 | 806 |
///\name Query Functions |
| 799 | 807 |
///The results of the %Dijkstra algorithm can be obtained using these |
| 800 | 808 |
///functions.\n |
| 801 |
///Either \ref run(Node) "run()" or \ref |
|
| 809 |
///Either \ref run(Node) "run()" or \ref init() should be called |
|
| 802 | 810 |
///before using them. |
| 803 | 811 |
|
| 804 | 812 |
///@{
|
| 805 | 813 |
|
| 806 |
///The shortest path to |
|
| 814 |
///The shortest path to the given node. |
|
| 807 | 815 |
|
| 808 |
///Returns the shortest path to |
|
| 816 |
///Returns the shortest path to the given node from the root(s). |
|
| 809 | 817 |
/// |
| 810 | 818 |
///\warning \c t should be reached from the root(s). |
| 811 | 819 |
/// |
| 812 | 820 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 813 | 821 |
///must be called before using this function. |
| 814 | 822 |
Path path(Node t) const { return Path(*G, *_pred, t); }
|
| 815 | 823 |
|
| 816 |
///The distance of |
|
| 824 |
///The distance of the given node from the root(s). |
|
| 817 | 825 |
|
| 818 |
///Returns the distance of |
|
| 826 |
///Returns the distance of the given node from the root(s). |
|
| 819 | 827 |
/// |
| 820 | 828 |
///\warning If node \c v is not reached from the root(s), then |
| 821 | 829 |
///the return value of this function is undefined. |
| 822 | 830 |
/// |
| 823 | 831 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 824 | 832 |
///must be called before using this function. |
| 825 | 833 |
Value dist(Node v) const { return (*_dist)[v]; }
|
| 826 | 834 |
|
| 827 |
///Returns the 'previous arc' of the shortest path tree for a node. |
|
| 828 |
|
|
| 835 |
///\brief Returns the 'previous arc' of the shortest path tree for |
|
| 836 |
///the given node. |
|
| 837 |
/// |
|
| 829 | 838 |
///This function returns the 'previous arc' of the shortest path |
| 830 | 839 |
///tree for the node \c v, i.e. it returns the last arc of a |
| 831 | 840 |
///shortest path from a root to \c v. It is \c INVALID if \c v |
| 832 | 841 |
///is not reached from the root(s) or if \c v is a root. |
| 833 | 842 |
/// |
| 834 | 843 |
///The shortest path tree used here is equal to the shortest path |
| 835 |
///tree used in \ref predNode(). |
|
| 844 |
///tree used in \ref predNode() and \ref predMap(). |
|
| 836 | 845 |
/// |
| 837 | 846 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 838 | 847 |
///must be called before using this function. |
| 839 | 848 |
Arc predArc(Node v) const { return (*_pred)[v]; }
|
| 840 | 849 |
|
| 841 |
///Returns the 'previous node' of the shortest path tree for a node. |
|
| 842 |
|
|
| 850 |
///\brief Returns the 'previous node' of the shortest path tree for |
|
| 851 |
///the given node. |
|
| 852 |
/// |
|
| 843 | 853 |
///This function returns the 'previous node' of the shortest path |
| 844 | 854 |
///tree for the node \c v, i.e. it returns the last but one node |
| 845 |
/// |
|
| 855 |
///of a shortest path from a root to \c v. It is \c INVALID |
|
| 846 | 856 |
///if \c v is not reached from the root(s) or if \c v is a root. |
| 847 | 857 |
/// |
| 848 | 858 |
///The shortest path tree used here is equal to the shortest path |
| 849 |
///tree used in \ref predArc(). |
|
| 859 |
///tree used in \ref predArc() and \ref predMap(). |
|
| 850 | 860 |
/// |
| 851 | 861 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 852 | 862 |
///must be called before using this function. |
| 853 | 863 |
Node predNode(Node v) const { return (*_pred)[v]==INVALID ? INVALID:
|
| 854 | 864 |
G->source((*_pred)[v]); } |
| 855 | 865 |
|
| 856 | 866 |
///\brief Returns a const reference to the node map that stores the |
| 857 | 867 |
///distances of the nodes. |
| 858 | 868 |
/// |
| 859 | 869 |
///Returns a const reference to the node map that stores the distances |
| 860 | 870 |
///of the nodes calculated by the algorithm. |
| 861 | 871 |
/// |
| 862 | 872 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 863 | 873 |
///must be called before using this function. |
| 864 | 874 |
const DistMap &distMap() const { return *_dist;}
|
| 865 | 875 |
|
| 866 | 876 |
///\brief Returns a const reference to the node map that stores the |
| 867 | 877 |
///predecessor arcs. |
| 868 | 878 |
/// |
| 869 | 879 |
///Returns a const reference to the node map that stores the predecessor |
| 870 |
///arcs, which form the shortest path tree. |
|
| 880 |
///arcs, which form the shortest path tree (forest). |
|
| 871 | 881 |
/// |
| 872 | 882 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 873 | 883 |
///must be called before using this function. |
| 874 | 884 |
const PredMap &predMap() const { return *_pred;}
|
| 875 | 885 |
|
| 876 |
///Checks if |
|
| 886 |
///Checks if the given node is reached from the root(s). |
|
| 877 | 887 |
|
| 878 | 888 |
///Returns \c true if \c v is reached from the root(s). |
| 879 | 889 |
/// |
| 880 | 890 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 881 | 891 |
///must be called before using this function. |
| 882 | 892 |
bool reached(Node v) const { return (*_heap_cross_ref)[v] !=
|
| 883 | 893 |
Heap::PRE_HEAP; } |
| 884 | 894 |
|
| 885 | 895 |
///Checks if a node is processed. |
| 886 | 896 |
|
| 887 | 897 |
///Returns \c true if \c v is processed, i.e. the shortest |
| 888 | 898 |
///path to \c v has already found. |
| 889 | 899 |
/// |
| 890 | 900 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 891 | 901 |
///must be called before using this function. |
| 892 | 902 |
bool processed(Node v) const { return (*_heap_cross_ref)[v] ==
|
| 893 | 903 |
Heap::POST_HEAP; } |
| 894 | 904 |
|
| 895 |
///The current distance of |
|
| 905 |
///The current distance of the given node from the root(s). |
|
| 896 | 906 |
|
| 897 |
///Returns the current distance of |
|
| 907 |
///Returns the current distance of the given node from the root(s). |
|
| 898 | 908 |
///It may be decreased in the following processes. |
| 899 | 909 |
/// |
| 900 | 910 |
///\pre Either \ref run(Node) "run()" or \ref init() |
| 901 | 911 |
///must be called before using this function and |
| 902 | 912 |
///node \c v must be reached but not necessarily processed. |
| 903 | 913 |
Value currentDist(Node v) const {
|
| 904 | 914 |
return processed(v) ? (*_dist)[v] : (*_heap)[v]; |
| 905 | 915 |
} |
| 906 | 916 |
|
| 907 | 917 |
///@} |
| 908 | 918 |
}; |
| 909 | 919 |
|
| 910 | 920 |
|
| 911 | 921 |
///Default traits class of dijkstra() function. |
| 912 | 922 |
|
| 913 | 923 |
///Default traits class of dijkstra() function. |
| 914 | 924 |
///\tparam GR The type of the digraph. |
| 915 |
///\tparam LM The type of the length map. |
|
| 916 |
template<class GR, class LM> |
|
| 925 |
///\tparam LEN The type of the length map. |
|
| 926 |
template<class GR, class LEN> |
|
| 917 | 927 |
struct DijkstraWizardDefaultTraits |
| 918 | 928 |
{
|
| 919 | 929 |
///The type of the digraph the algorithm runs on. |
| 920 | 930 |
typedef GR Digraph; |
| 921 | 931 |
///The type of the map that stores the arc lengths. |
| 922 | 932 |
|
| 923 | 933 |
///The type of the map that stores the arc lengths. |
| 924 |
///It must meet the \ref concepts::ReadMap "ReadMap" concept. |
|
| 925 |
typedef LM LengthMap; |
|
| 926 |
///The type of the length of the arcs. |
|
| 927 |
typedef typename LM::Value Value; |
|
| 934 |
///It must conform to the \ref concepts::ReadMap "ReadMap" concept. |
|
| 935 |
typedef LEN LengthMap; |
|
| 936 |
///The type of the arc lengths. |
|
| 937 |
typedef typename LEN::Value Value; |
|
| 928 | 938 |
|
| 929 | 939 |
/// Operation traits for Dijkstra algorithm. |
| 930 | 940 |
|
| 931 | 941 |
/// This class defines the operations that are used in the algorithm. |
| 932 | 942 |
/// \see DijkstraDefaultOperationTraits |
| 933 | 943 |
typedef DijkstraDefaultOperationTraits<Value> OperationTraits; |
| 934 | 944 |
|
| 935 | 945 |
/// The cross reference type used by the heap. |
| 936 | 946 |
|
| 937 | 947 |
/// The cross reference type used by the heap. |
| 938 | 948 |
/// Usually it is \c Digraph::NodeMap<int>. |
| 939 | 949 |
typedef typename Digraph::template NodeMap<int> HeapCrossRef; |
| 940 | 950 |
///Instantiates a \ref HeapCrossRef. |
| 941 | 951 |
|
| 942 | 952 |
///This function instantiates a \ref HeapCrossRef. |
| 943 | 953 |
/// \param g is the digraph, to which we would like to define the |
| 944 | 954 |
/// HeapCrossRef. |
| 945 | 955 |
static HeapCrossRef *createHeapCrossRef(const Digraph &g) |
| 946 | 956 |
{
|
| 947 | 957 |
return new HeapCrossRef(g); |
| 948 | 958 |
} |
| 949 | 959 |
|
| 950 | 960 |
///The heap type used by the Dijkstra algorithm. |
| 951 | 961 |
|
| 952 | 962 |
///The heap type used by the Dijkstra algorithm. |
| 953 | 963 |
/// |
| 954 | 964 |
///\sa BinHeap |
| 955 | 965 |
///\sa Dijkstra |
| 956 | 966 |
typedef BinHeap<Value, typename Digraph::template NodeMap<int>, |
| 957 | 967 |
std::less<Value> > Heap; |
| 958 | 968 |
|
| 959 | 969 |
///Instantiates a \ref Heap. |
| 960 | 970 |
|
| 961 | 971 |
///This function instantiates a \ref Heap. |
| 962 | 972 |
/// \param r is the HeapCrossRef which is used. |
| 963 | 973 |
static Heap *createHeap(HeapCrossRef& r) |
| 964 | 974 |
{
|
| 965 | 975 |
return new Heap(r); |
| 966 | 976 |
} |
| 967 | 977 |
|
| 968 | 978 |
///\brief The type of the map that stores the predecessor |
| 969 | 979 |
///arcs of the shortest paths. |
| 970 | 980 |
/// |
| 971 | 981 |
///The type of the map that stores the predecessor |
| 972 | 982 |
///arcs of the shortest paths. |
| 973 |
///It must |
|
| 983 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 974 | 984 |
typedef typename Digraph::template NodeMap<typename Digraph::Arc> PredMap; |
| 975 | 985 |
///Instantiates a PredMap. |
| 976 | 986 |
|
| 977 | 987 |
///This function instantiates a PredMap. |
| 978 | 988 |
///\param g is the digraph, to which we would like to define the |
| 979 | 989 |
///PredMap. |
| 980 | 990 |
static PredMap *createPredMap(const Digraph &g) |
| 981 | 991 |
{
|
| 982 | 992 |
return new PredMap(g); |
| 983 | 993 |
} |
| 984 | 994 |
|
| 985 | 995 |
///The type of the map that indicates which nodes are processed. |
| 986 | 996 |
|
| 987 | 997 |
///The type of the map that indicates which nodes are processed. |
| 988 |
///It must |
|
| 998 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 989 | 999 |
///By default it is a NullMap. |
| 990 | 1000 |
typedef NullMap<typename Digraph::Node,bool> ProcessedMap; |
| 991 | 1001 |
///Instantiates a ProcessedMap. |
| 992 | 1002 |
|
| 993 | 1003 |
///This function instantiates a ProcessedMap. |
| 994 | 1004 |
///\param g is the digraph, to which |
| 995 | 1005 |
///we would like to define the ProcessedMap. |
| 996 | 1006 |
#ifdef DOXYGEN |
| 997 | 1007 |
static ProcessedMap *createProcessedMap(const Digraph &g) |
| 998 | 1008 |
#else |
| 999 | 1009 |
static ProcessedMap *createProcessedMap(const Digraph &) |
| 1000 | 1010 |
#endif |
| 1001 | 1011 |
{
|
| 1002 | 1012 |
return new ProcessedMap(); |
| 1003 | 1013 |
} |
| 1004 | 1014 |
|
| 1005 | 1015 |
///The type of the map that stores the distances of the nodes. |
| 1006 | 1016 |
|
| 1007 | 1017 |
///The type of the map that stores the distances of the nodes. |
| 1008 |
///It must meet the \ref concepts::WriteMap "WriteMap" concept. |
|
| 1009 |
typedef typename Digraph::template NodeMap<typename LM::Value> DistMap; |
|
| 1018 |
///It must conform to the \ref concepts::WriteMap "WriteMap" concept. |
|
| 1019 |
typedef typename Digraph::template NodeMap<typename LEN::Value> DistMap; |
|
| 1010 | 1020 |
///Instantiates a DistMap. |
| 1011 | 1021 |
|
| 1012 | 1022 |
///This function instantiates a DistMap. |
| 1013 | 1023 |
///\param g is the digraph, to which we would like to define |
| 1014 | 1024 |
///the DistMap |
| 1015 | 1025 |
static DistMap *createDistMap(const Digraph &g) |
| 1016 | 1026 |
{
|
| 1017 | 1027 |
return new DistMap(g); |
| 1018 | 1028 |
} |
| 1019 | 1029 |
|
| 1020 | 1030 |
///The type of the shortest paths. |
| 1021 | 1031 |
|
| 1022 | 1032 |
///The type of the shortest paths. |
| 1023 |
///It must |
|
| 1033 |
///It must conform to the \ref concepts::Path "Path" concept. |
|
| 1024 | 1034 |
typedef lemon::Path<Digraph> Path; |
| 1025 | 1035 |
}; |
| 1026 | 1036 |
|
| 1027 | 1037 |
/// Default traits class used by DijkstraWizard |
| 1028 | 1038 |
|
| 1029 |
/// To make it easier to use Dijkstra algorithm |
|
| 1030 |
/// we have created a wizard class. |
|
| 1031 |
/// This \ref DijkstraWizard class needs default traits, |
|
| 1032 |
/// as well as the \ref Dijkstra class. |
|
| 1033 |
/// The \ref DijkstraWizardBase is a class to be the default traits of the |
|
| 1034 |
/// \ref DijkstraWizard class. |
|
| 1035 |
template<class GR,class LM> |
|
| 1036 |
class DijkstraWizardBase : public DijkstraWizardDefaultTraits<GR,LM> |
|
| 1039 |
/// Default traits class used by DijkstraWizard. |
|
| 1040 |
/// \tparam GR The type of the digraph. |
|
| 1041 |
/// \tparam LEN The type of the length map. |
|
| 1042 |
template<typename GR, typename LEN> |
|
| 1043 |
class DijkstraWizardBase : public DijkstraWizardDefaultTraits<GR,LEN> |
|
| 1037 | 1044 |
{
|
| 1038 |
typedef DijkstraWizardDefaultTraits<GR, |
|
| 1045 |
typedef DijkstraWizardDefaultTraits<GR,LEN> Base; |
|
| 1039 | 1046 |
protected: |
| 1040 | 1047 |
//The type of the nodes in the digraph. |
| 1041 | 1048 |
typedef typename Base::Digraph::Node Node; |
| 1042 | 1049 |
|
| 1043 | 1050 |
//Pointer to the digraph the algorithm runs on. |
| 1044 | 1051 |
void *_g; |
| 1045 | 1052 |
//Pointer to the length map. |
| 1046 | 1053 |
void *_length; |
| 1047 | 1054 |
//Pointer to the map of processed nodes. |
| 1048 | 1055 |
void *_processed; |
| 1049 | 1056 |
//Pointer to the map of predecessors arcs. |
| 1050 | 1057 |
void *_pred; |
| 1051 | 1058 |
//Pointer to the map of distances. |
| 1052 | 1059 |
void *_dist; |
| 1053 | 1060 |
//Pointer to the shortest path to the target node. |
| 1054 | 1061 |
void *_path; |
| 1055 | 1062 |
//Pointer to the distance of the target node. |
| 1056 | 1063 |
void *_di; |
| 1057 | 1064 |
|
| 1058 | 1065 |
public: |
| 1059 | 1066 |
/// Constructor. |
| 1060 | 1067 |
|
| 1061 | 1068 |
/// This constructor does not require parameters, therefore it initiates |
| 1062 | 1069 |
/// all of the attributes to \c 0. |
| 1063 | 1070 |
DijkstraWizardBase() : _g(0), _length(0), _processed(0), _pred(0), |
| 1064 | 1071 |
_dist(0), _path(0), _di(0) {}
|
| 1065 | 1072 |
|
| 1066 | 1073 |
/// Constructor. |
| 1067 | 1074 |
|
| 1068 | 1075 |
/// This constructor requires two parameters, |
| 1069 | 1076 |
/// others are initiated to \c 0. |
| 1070 | 1077 |
/// \param g The digraph the algorithm runs on. |
| 1071 | 1078 |
/// \param l The length map. |
| 1072 |
DijkstraWizardBase(const GR &g,const |
|
| 1079 |
DijkstraWizardBase(const GR &g,const LEN &l) : |
|
| 1073 | 1080 |
_g(reinterpret_cast<void*>(const_cast<GR*>(&g))), |
| 1074 |
_length(reinterpret_cast<void*>(const_cast< |
|
| 1081 |
_length(reinterpret_cast<void*>(const_cast<LEN*>(&l))), |
|
| 1075 | 1082 |
_processed(0), _pred(0), _dist(0), _path(0), _di(0) {}
|
| 1076 | 1083 |
|
| 1077 | 1084 |
}; |
| 1078 | 1085 |
|
| 1079 | 1086 |
/// Auxiliary class for the function-type interface of Dijkstra algorithm. |
| 1080 | 1087 |
|
| 1081 | 1088 |
/// This auxiliary class is created to implement the |
| 1082 | 1089 |
/// \ref dijkstra() "function-type interface" of \ref Dijkstra algorithm. |
| 1083 | 1090 |
/// It does not have own \ref run(Node) "run()" method, it uses the |
| 1084 | 1091 |
/// functions and features of the plain \ref Dijkstra. |
| 1085 | 1092 |
/// |
| 1086 | 1093 |
/// This class should only be used through the \ref dijkstra() function, |
| 1087 | 1094 |
/// which makes it easier to use the algorithm. |
| 1088 | 1095 |
template<class TR> |
| 1089 | 1096 |
class DijkstraWizard : public TR |
| 1090 | 1097 |
{
|
| 1091 | 1098 |
typedef TR Base; |
| 1092 | 1099 |
|
| 1093 |
///The type of the digraph the algorithm runs on. |
|
| 1094 | 1100 |
typedef typename TR::Digraph Digraph; |
| 1095 | 1101 |
|
| 1096 | 1102 |
typedef typename Digraph::Node Node; |
| 1097 | 1103 |
typedef typename Digraph::NodeIt NodeIt; |
| 1098 | 1104 |
typedef typename Digraph::Arc Arc; |
| 1099 | 1105 |
typedef typename Digraph::OutArcIt OutArcIt; |
| 1100 | 1106 |
|
| 1101 |
///The type of the map that stores the arc lengths. |
|
| 1102 | 1107 |
typedef typename TR::LengthMap LengthMap; |
| 1103 |
///The type of the length of the arcs. |
|
| 1104 | 1108 |
typedef typename LengthMap::Value Value; |
| 1105 |
///\brief The type of the map that stores the predecessor |
|
| 1106 |
///arcs of the shortest paths. |
|
| 1107 | 1109 |
typedef typename TR::PredMap PredMap; |
| 1108 |
///The type of the map that stores the distances of the nodes. |
|
| 1109 | 1110 |
typedef typename TR::DistMap DistMap; |
| 1110 |
///The type of the map that indicates which nodes are processed. |
|
| 1111 | 1111 |
typedef typename TR::ProcessedMap ProcessedMap; |
| 1112 |
///The type of the shortest paths |
|
| 1113 | 1112 |
typedef typename TR::Path Path; |
| 1114 |
///The heap type used by the dijkstra algorithm. |
|
| 1115 | 1113 |
typedef typename TR::Heap Heap; |
| 1116 | 1114 |
|
| 1117 | 1115 |
public: |
| 1118 | 1116 |
|
| 1119 | 1117 |
/// Constructor. |
| 1120 | 1118 |
DijkstraWizard() : TR() {}
|
| 1121 | 1119 |
|
| 1122 | 1120 |
/// Constructor that requires parameters. |
| 1123 | 1121 |
|
| 1124 | 1122 |
/// Constructor that requires parameters. |
| 1125 | 1123 |
/// These parameters will be the default values for the traits class. |
| 1126 | 1124 |
/// \param g The digraph the algorithm runs on. |
| 1127 | 1125 |
/// \param l The length map. |
| 1128 | 1126 |
DijkstraWizard(const Digraph &g, const LengthMap &l) : |
| 1129 | 1127 |
TR(g,l) {}
|
| 1130 | 1128 |
|
| 1131 | 1129 |
///Copy constructor |
| 1132 | 1130 |
DijkstraWizard(const TR &b) : TR(b) {}
|
| 1133 | 1131 |
|
| 1134 | 1132 |
~DijkstraWizard() {}
|
| 1135 | 1133 |
|
| 1136 | 1134 |
///Runs Dijkstra algorithm from the given source node. |
| 1137 | 1135 |
|
| 1138 | 1136 |
///This method runs %Dijkstra algorithm from the given source node |
| 1139 | 1137 |
///in order to compute the shortest path to each node. |
| 1140 | 1138 |
void run(Node s) |
| 1141 | 1139 |
{
|
| 1142 | 1140 |
Dijkstra<Digraph,LengthMap,TR> |
| 1143 | 1141 |
dijk(*reinterpret_cast<const Digraph*>(Base::_g), |
| 1144 | 1142 |
*reinterpret_cast<const LengthMap*>(Base::_length)); |
| 1145 | 1143 |
if (Base::_pred) |
| 1146 | 1144 |
dijk.predMap(*reinterpret_cast<PredMap*>(Base::_pred)); |
| 1147 | 1145 |
if (Base::_dist) |
| 1148 | 1146 |
dijk.distMap(*reinterpret_cast<DistMap*>(Base::_dist)); |
| 1149 | 1147 |
if (Base::_processed) |
| 1150 | 1148 |
dijk.processedMap(*reinterpret_cast<ProcessedMap*>(Base::_processed)); |
| 1151 | 1149 |
dijk.run(s); |
| 1152 | 1150 |
} |
| 1153 | 1151 |
|
| 1154 | 1152 |
///Finds the shortest path between \c s and \c t. |
| 1155 | 1153 |
|
| 1156 | 1154 |
///This method runs the %Dijkstra algorithm from node \c s |
| 1157 | 1155 |
///in order to compute the shortest path to node \c t |
| 1158 | 1156 |
///(it stops searching when \c t is processed). |
| 1159 | 1157 |
/// |
| 1160 | 1158 |
///\return \c true if \c t is reachable form \c s. |
| 1161 | 1159 |
bool run(Node s, Node t) |
| 1162 | 1160 |
{
|
| 1163 | 1161 |
Dijkstra<Digraph,LengthMap,TR> |
| 1164 | 1162 |
dijk(*reinterpret_cast<const Digraph*>(Base::_g), |
| 1165 | 1163 |
*reinterpret_cast<const LengthMap*>(Base::_length)); |
| 1166 | 1164 |
if (Base::_pred) |
| 1167 | 1165 |
dijk.predMap(*reinterpret_cast<PredMap*>(Base::_pred)); |
| 1168 | 1166 |
if (Base::_dist) |
| 1169 | 1167 |
dijk.distMap(*reinterpret_cast<DistMap*>(Base::_dist)); |
| 1170 | 1168 |
if (Base::_processed) |
| 1171 | 1169 |
dijk.processedMap(*reinterpret_cast<ProcessedMap*>(Base::_processed)); |
| 1172 | 1170 |
dijk.run(s,t); |
| 1173 | 1171 |
if (Base::_path) |
| 1174 | 1172 |
*reinterpret_cast<Path*>(Base::_path) = dijk.path(t); |
| 1175 | 1173 |
if (Base::_di) |
| 1176 | 1174 |
*reinterpret_cast<Value*>(Base::_di) = dijk.dist(t); |
| 1177 | 1175 |
return dijk.reached(t); |
| 1178 | 1176 |
} |
| 1179 | 1177 |
|
| 1180 | 1178 |
template<class T> |
| 1181 | 1179 |
struct SetPredMapBase : public Base {
|
| 1182 | 1180 |
typedef T PredMap; |
| 1183 | 1181 |
static PredMap *createPredMap(const Digraph &) { return 0; };
|
| 1184 | 1182 |
SetPredMapBase(const TR &b) : TR(b) {}
|
| 1185 | 1183 |
}; |
| 1186 |
///\brief \ref named-func-param "Named parameter" |
|
| 1187 |
///for setting PredMap object. |
|
| 1184 |
|
|
| 1185 |
///\brief \ref named-templ-param "Named parameter" for setting |
|
| 1186 |
///the predecessor map. |
|
| 1188 | 1187 |
/// |
| 1189 |
///\ref named-func-param "Named parameter" |
|
| 1190 |
///for setting PredMap object. |
|
| 1188 |
///\ref named-templ-param "Named parameter" function for setting |
|
| 1189 |
///the map that stores the predecessor arcs of the nodes. |
|
| 1191 | 1190 |
template<class T> |
| 1192 | 1191 |
DijkstraWizard<SetPredMapBase<T> > predMap(const T &t) |
| 1193 | 1192 |
{
|
| 1194 | 1193 |
Base::_pred=reinterpret_cast<void*>(const_cast<T*>(&t)); |
| 1195 | 1194 |
return DijkstraWizard<SetPredMapBase<T> >(*this); |
| 1196 | 1195 |
} |
| 1197 | 1196 |
|
| 1198 | 1197 |
template<class T> |
| 1199 | 1198 |
struct SetDistMapBase : public Base {
|
| 1200 | 1199 |
typedef T DistMap; |
| 1201 | 1200 |
static DistMap *createDistMap(const Digraph &) { return 0; };
|
| 1202 | 1201 |
SetDistMapBase(const TR &b) : TR(b) {}
|
| 1203 | 1202 |
}; |
| 1204 |
///\brief \ref named-func-param "Named parameter" |
|
| 1205 |
///for setting DistMap object. |
|
| 1203 |
|
|
| 1204 |
///\brief \ref named-templ-param "Named parameter" for setting |
|
| 1205 |
///the distance map. |
|
| 1206 | 1206 |
/// |
| 1207 |
///\ref named-func-param "Named parameter" |
|
| 1208 |
///for setting DistMap object. |
|
| 1207 |
///\ref named-templ-param "Named parameter" function for setting |
|
| 1208 |
///the map that stores the distances of the nodes calculated |
|
| 1209 |
///by the algorithm. |
|
| 1209 | 1210 |
template<class T> |
| 1210 | 1211 |
DijkstraWizard<SetDistMapBase<T> > distMap(const T &t) |
| 1211 | 1212 |
{
|
| 1212 | 1213 |
Base::_dist=reinterpret_cast<void*>(const_cast<T*>(&t)); |
| 1213 | 1214 |
return DijkstraWizard<SetDistMapBase<T> >(*this); |
| 1214 | 1215 |
} |
| 1215 | 1216 |
|
| 1216 | 1217 |
template<class T> |
| 1217 | 1218 |
struct SetProcessedMapBase : public Base {
|
| 1218 | 1219 |
typedef T ProcessedMap; |
| 1219 | 1220 |
static ProcessedMap *createProcessedMap(const Digraph &) { return 0; };
|
| 1220 | 1221 |
SetProcessedMapBase(const TR &b) : TR(b) {}
|
| 1221 | 1222 |
}; |
| 1222 |
///\brief \ref named-func-param "Named parameter" |
|
| 1223 |
///for setting ProcessedMap object. |
|
| 1223 |
|
|
| 1224 |
///\brief \ref named-func-param "Named parameter" for setting |
|
| 1225 |
///the processed map. |
|
| 1224 | 1226 |
/// |
| 1225 |
/// \ref named-func-param "Named parameter" |
|
| 1226 |
///for setting ProcessedMap object. |
|
| 1227 |
///\ref named-templ-param "Named parameter" function for setting |
|
| 1228 |
///the map that indicates which nodes are processed. |
|
| 1227 | 1229 |
template<class T> |
| 1228 | 1230 |
DijkstraWizard<SetProcessedMapBase<T> > processedMap(const T &t) |
| 1229 | 1231 |
{
|
| 1230 | 1232 |
Base::_processed=reinterpret_cast<void*>(const_cast<T*>(&t)); |
| 1231 | 1233 |
return DijkstraWizard<SetProcessedMapBase<T> >(*this); |
| 1232 | 1234 |
} |
| 1233 | 1235 |
|
| 1234 | 1236 |
template<class T> |
| 1235 | 1237 |
struct SetPathBase : public Base {
|
| 1236 | 1238 |
typedef T Path; |
| 1237 | 1239 |
SetPathBase(const TR &b) : TR(b) {}
|
| 1238 | 1240 |
}; |
| 1241 |
|
|
| 1239 | 1242 |
///\brief \ref named-func-param "Named parameter" |
| 1240 | 1243 |
///for getting the shortest path to the target node. |
| 1241 | 1244 |
/// |
| 1242 | 1245 |
///\ref named-func-param "Named parameter" |
| 1243 | 1246 |
///for getting the shortest path to the target node. |
| 1244 | 1247 |
template<class T> |
| 1245 | 1248 |
DijkstraWizard<SetPathBase<T> > path(const T &t) |
| 1246 | 1249 |
{
|
| 1247 | 1250 |
Base::_path=reinterpret_cast<void*>(const_cast<T*>(&t)); |
| 1248 | 1251 |
return DijkstraWizard<SetPathBase<T> >(*this); |
| 1249 | 1252 |
} |
| 1250 | 1253 |
|
| 1251 | 1254 |
///\brief \ref named-func-param "Named parameter" |
| 1252 | 1255 |
///for getting the distance of the target node. |
| 1253 | 1256 |
/// |
| 1254 | 1257 |
///\ref named-func-param "Named parameter" |
| 1255 | 1258 |
///for getting the distance of the target node. |
| 1256 | 1259 |
DijkstraWizard dist(const Value &d) |
| 1257 | 1260 |
{
|
| 1258 | 1261 |
Base::_di=reinterpret_cast<void*>(const_cast<Value*>(&d)); |
| 1259 | 1262 |
return *this; |
| 1260 | 1263 |
} |
| 1261 | 1264 |
|
| 1262 | 1265 |
}; |
| 1263 | 1266 |
|
| 1264 | 1267 |
///Function-type interface for Dijkstra algorithm. |
| 1265 | 1268 |
|
| 1266 | 1269 |
/// \ingroup shortest_path |
| 1267 | 1270 |
///Function-type interface for Dijkstra algorithm. |
| 1268 | 1271 |
/// |
| 1269 | 1272 |
///This function also has several \ref named-func-param "named parameters", |
| 1270 | 1273 |
///they are declared as the members of class \ref DijkstraWizard. |
| 1271 | 1274 |
///The following examples show how to use these parameters. |
| 1272 | 1275 |
///\code |
| 1273 | 1276 |
/// // Compute shortest path from node s to each node |
| 1274 | 1277 |
/// dijkstra(g,length).predMap(preds).distMap(dists).run(s); |
| 1275 | 1278 |
/// |
| 1276 | 1279 |
/// // Compute shortest path from s to t |
| 1277 | 1280 |
/// bool reached = dijkstra(g,length).path(p).dist(d).run(s,t); |
| 1278 | 1281 |
///\endcode |
| 1279 | 1282 |
///\warning Don't forget to put the \ref DijkstraWizard::run(Node) "run()" |
| 1280 | 1283 |
///to the end of the parameter list. |
| 1281 | 1284 |
///\sa DijkstraWizard |
| 1282 | 1285 |
///\sa Dijkstra |
| 1283 |
template<class GR, class LM> |
|
| 1284 |
DijkstraWizard<DijkstraWizardBase<GR,LM> > |
|
| 1285 |
|
|
| 1286 |
template<typename GR, typename LEN> |
|
| 1287 |
DijkstraWizard<DijkstraWizardBase<GR,LEN> > |
|
| 1288 |
dijkstra(const GR &digraph, const LEN &length) |
|
| 1286 | 1289 |
{
|
| 1287 |
return DijkstraWizard<DijkstraWizardBase<GR, |
|
| 1290 |
return DijkstraWizard<DijkstraWizardBase<GR,LEN> >(digraph,length); |
|
| 1288 | 1291 |
} |
| 1289 | 1292 |
|
| 1290 | 1293 |
} //END OF NAMESPACE LEMON |
| 1291 | 1294 |
|
| 1292 | 1295 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_DIM2_H |
| 20 | 20 |
#define LEMON_DIM2_H |
| 21 | 21 |
|
| 22 | 22 |
#include <iostream> |
| 23 | 23 |
|
| 24 |
///\ingroup |
|
| 24 |
///\ingroup geomdat |
|
| 25 | 25 |
///\file |
| 26 | 26 |
///\brief A simple two dimensional vector and a bounding box implementation |
| 27 |
/// |
|
| 28 |
/// The class \ref lemon::dim2::Point "dim2::Point" implements |
|
| 29 |
/// a two dimensional vector with the usual operations. |
|
| 30 |
/// |
|
| 31 |
/// The class \ref lemon::dim2::Box "dim2::Box" can be used to determine |
|
| 32 |
/// the rectangular bounding box of a set of |
|
| 33 |
/// \ref lemon::dim2::Point "dim2::Point"'s. |
|
| 34 | 27 |
|
| 35 | 28 |
namespace lemon {
|
| 36 | 29 |
|
| 37 | 30 |
///Tools for handling two dimensional coordinates |
| 38 | 31 |
|
| 39 | 32 |
///This namespace is a storage of several |
| 40 | 33 |
///tools for handling two dimensional coordinates |
| 41 | 34 |
namespace dim2 {
|
| 42 | 35 |
|
| 43 |
/// \addtogroup |
|
| 36 |
/// \addtogroup geomdat |
|
| 44 | 37 |
/// @{
|
| 45 | 38 |
|
| 46 | 39 |
/// Two dimensional vector (plain vector) |
| 47 | 40 |
|
| 48 | 41 |
/// A simple two dimensional vector (plain vector) implementation |
| 49 | 42 |
/// with the usual vector operations. |
| 50 | 43 |
template<typename T> |
| 51 | 44 |
class Point {
|
| 52 | 45 |
|
| 53 | 46 |
public: |
| 54 | 47 |
|
| 55 | 48 |
typedef T Value; |
| 56 | 49 |
|
| 57 | 50 |
///First coordinate |
| 58 | 51 |
T x; |
| 59 | 52 |
///Second coordinate |
| 60 | 53 |
T y; |
| 61 | 54 |
|
| 62 | 55 |
///Default constructor |
| 63 | 56 |
Point() {}
|
| 64 | 57 |
|
| 65 | 58 |
///Construct an instance from coordinates |
| 66 | 59 |
Point(T a, T b) : x(a), y(b) { }
|
| 67 | 60 |
|
| 68 | 61 |
///Returns the dimension of the vector (i.e. returns 2). |
| 69 | 62 |
|
| 70 | 63 |
///The dimension of the vector. |
| 71 | 64 |
///This function always returns 2. |
| 72 | 65 |
int size() const { return 2; }
|
| 73 | 66 |
|
| 74 | 67 |
///Subscripting operator |
| 75 | 68 |
|
| 76 | 69 |
///\c p[0] is \c p.x and \c p[1] is \c p.y |
| 77 | 70 |
/// |
| 78 | 71 |
T& operator[](int idx) { return idx == 0 ? x : y; }
|
| 79 | 72 |
|
| 80 | 73 |
///Const subscripting operator |
| 81 | 74 |
|
| 82 | 75 |
///\c p[0] is \c p.x and \c p[1] is \c p.y |
| 83 | 76 |
/// |
| 84 | 77 |
const T& operator[](int idx) const { return idx == 0 ? x : y; }
|
| 85 | 78 |
|
| 86 | 79 |
///Conversion constructor |
| 87 | 80 |
template<class TT> Point(const Point<TT> &p) : x(p.x), y(p.y) {}
|
| 88 | 81 |
|
| 89 | 82 |
///Give back the square of the norm of the vector |
| 90 | 83 |
T normSquare() const {
|
| 91 | 84 |
return x*x+y*y; |
| 92 | 85 |
} |
| 93 | 86 |
|
| 94 | 87 |
///Increment the left hand side by \c u |
| 95 | 88 |
Point<T>& operator +=(const Point<T>& u) {
|
| 96 | 89 |
x += u.x; |
| 97 | 90 |
y += u.y; |
| 98 | 91 |
return *this; |
| 99 | 92 |
} |
| 100 | 93 |
|
| 101 | 94 |
///Decrement the left hand side by \c u |
| 102 | 95 |
Point<T>& operator -=(const Point<T>& u) {
|
| 103 | 96 |
x -= u.x; |
| 104 | 97 |
y -= u.y; |
| 105 | 98 |
return *this; |
| 106 | 99 |
} |
| 107 | 100 |
|
| 108 | 101 |
///Multiply the left hand side with a scalar |
| 109 | 102 |
Point<T>& operator *=(const T &u) {
|
| 110 | 103 |
x *= u; |
| 111 | 104 |
y *= u; |
| 112 | 105 |
return *this; |
| 113 | 106 |
} |
| 114 | 107 |
|
| 115 | 108 |
///Divide the left hand side by a scalar |
| 116 | 109 |
Point<T>& operator /=(const T &u) {
|
| 117 | 110 |
x /= u; |
| 118 | 111 |
y /= u; |
| 119 | 112 |
return *this; |
| 120 | 113 |
} |
| 121 | 114 |
|
| 122 | 115 |
///Return the scalar product of two vectors |
| 123 | 116 |
T operator *(const Point<T>& u) const {
|
| 124 | 117 |
return x*u.x+y*u.y; |
| 125 | 118 |
} |
| 126 | 119 |
|
| 127 | 120 |
///Return the sum of two vectors |
| 128 | 121 |
Point<T> operator+(const Point<T> &u) const {
|
| 129 | 122 |
Point<T> b=*this; |
| 130 | 123 |
return b+=u; |
| 131 | 124 |
} |
| 132 | 125 |
|
| 133 | 126 |
///Return the negative of the vector |
| 134 | 127 |
Point<T> operator-() const {
|
| 135 | 128 |
Point<T> b=*this; |
| 136 | 129 |
b.x=-b.x; b.y=-b.y; |
| 137 | 130 |
return b; |
| 138 | 131 |
} |
| 139 | 132 |
|
| 140 | 133 |
///Return the difference of two vectors |
| 141 | 134 |
Point<T> operator-(const Point<T> &u) const {
|
| 142 | 135 |
Point<T> b=*this; |
| 143 | 136 |
return b-=u; |
| 144 | 137 |
} |
| 145 | 138 |
|
| 146 | 139 |
///Return a vector multiplied by a scalar |
| 147 | 140 |
Point<T> operator*(const T &u) const {
|
| 148 | 141 |
Point<T> b=*this; |
| 149 | 142 |
return b*=u; |
| 150 | 143 |
} |
| 151 | 144 |
|
| 152 | 145 |
///Return a vector divided by a scalar |
| 153 | 146 |
Point<T> operator/(const T &u) const {
|
| 154 | 147 |
Point<T> b=*this; |
| 155 | 148 |
return b/=u; |
| 156 | 149 |
} |
| 157 | 150 |
|
| 158 | 151 |
///Test equality |
| 159 | 152 |
bool operator==(const Point<T> &u) const {
|
| 160 | 153 |
return (x==u.x) && (y==u.y); |
| 161 | 154 |
} |
| 162 | 155 |
|
| 163 | 156 |
///Test inequality |
| 164 | 157 |
bool operator!=(Point u) const {
|
| 165 | 158 |
return (x!=u.x) || (y!=u.y); |
| 166 | 159 |
} |
| 167 | 160 |
|
| 168 | 161 |
}; |
| 169 | 162 |
|
| 170 | 163 |
///Return a Point |
| 171 | 164 |
|
| 172 | 165 |
///Return a Point. |
| 173 | 166 |
///\relates Point |
| 174 | 167 |
template <typename T> |
| 175 | 168 |
inline Point<T> makePoint(const T& x, const T& y) {
|
| 176 | 169 |
return Point<T>(x, y); |
| 177 | 170 |
} |
| 178 | 171 |
|
| 179 | 172 |
///Return a vector multiplied by a scalar |
| 180 | 173 |
|
| 181 | 174 |
///Return a vector multiplied by a scalar. |
| 182 | 175 |
///\relates Point |
| 183 | 176 |
template<typename T> Point<T> operator*(const T &u,const Point<T> &x) {
|
| 184 | 177 |
return x*u; |
| 185 | 178 |
} |
| 186 | 179 |
|
| 187 | 180 |
///Read a plain vector from a stream |
| 188 | 181 |
|
| 189 | 182 |
///Read a plain vector from a stream. |
| 190 | 183 |
///\relates Point |
| 191 | 184 |
/// |
| 192 | 185 |
template<typename T> |
| 193 | 186 |
inline std::istream& operator>>(std::istream &is, Point<T> &z) {
|
| 194 | 187 |
char c; |
| 195 | 188 |
if (is >> c) {
|
| 196 | 189 |
if (c != '(') is.putback(c);
|
| 197 | 190 |
} else {
|
| 198 | 191 |
is.clear(); |
| 199 | 192 |
} |
| 200 | 193 |
if (!(is >> z.x)) return is; |
| 201 | 194 |
if (is >> c) {
|
| 202 | 195 |
if (c != ',') is.putback(c); |
| 203 | 196 |
} else {
|
| 204 | 197 |
is.clear(); |
| 205 | 198 |
} |
| 206 | 199 |
if (!(is >> z.y)) return is; |
| 207 | 200 |
if (is >> c) {
|
| 208 | 201 |
if (c != ')') is.putback(c); |
| 209 | 202 |
} else {
|
| 210 | 203 |
is.clear(); |
| 211 | 204 |
} |
| 212 | 205 |
return is; |
| 213 | 206 |
} |
| 214 | 207 |
|
| 215 | 208 |
///Write a plain vector to a stream |
| 216 | 209 |
|
| 217 | 210 |
///Write a plain vector to a stream. |
| 218 | 211 |
///\relates Point |
| 219 | 212 |
/// |
| 220 | 213 |
template<typename T> |
| 221 | 214 |
inline std::ostream& operator<<(std::ostream &os, const Point<T>& z) |
| 222 | 215 |
{
|
| 223 | 216 |
os << "(" << z.x << "," << z.y << ")";
|
| 224 | 217 |
return os; |
| 225 | 218 |
} |
| 226 | 219 |
|
| 227 | 220 |
///Rotate by 90 degrees |
| 228 | 221 |
|
| 229 | 222 |
///Returns the parameter rotated by 90 degrees in positive direction. |
| 230 | 223 |
///\relates Point |
| 231 | 224 |
/// |
| 232 | 225 |
template<typename T> |
| 233 | 226 |
inline Point<T> rot90(const Point<T> &z) |
| 234 | 227 |
{
|
| 235 | 228 |
return Point<T>(-z.y,z.x); |
| 236 | 229 |
} |
| 237 | 230 |
|
| 238 | 231 |
///Rotate by 180 degrees |
| 239 | 232 |
|
| 240 | 233 |
///Returns the parameter rotated by 180 degrees. |
| 241 | 234 |
///\relates Point |
| 242 | 235 |
/// |
| 243 | 236 |
template<typename T> |
| 244 | 237 |
inline Point<T> rot180(const Point<T> &z) |
| 245 | 238 |
{
|
| 246 | 239 |
return Point<T>(-z.x,-z.y); |
| 247 | 240 |
} |
| 248 | 241 |
|
| 249 | 242 |
///Rotate by 270 degrees |
| 250 | 243 |
|
| 251 | 244 |
///Returns the parameter rotated by 90 degrees in negative direction. |
| 252 | 245 |
///\relates Point |
| 253 | 246 |
/// |
| 254 | 247 |
template<typename T> |
| 255 | 248 |
inline Point<T> rot270(const Point<T> &z) |
| 256 | 249 |
{
|
| 257 | 250 |
return Point<T>(z.y,-z.x); |
| 258 | 251 |
} |
| 259 | 252 |
|
| 260 | 253 |
|
| 261 | 254 |
|
| 262 | 255 |
/// Bounding box of plain vectors (points). |
| 263 | 256 |
|
| 264 | 257 |
/// A class to calculate or store the bounding box of plain vectors |
| 265 | 258 |
/// (\ref Point "points"). |
| 266 | 259 |
template<typename T> |
| 267 | 260 |
class Box {
|
| 268 | 261 |
Point<T> _bottom_left, _top_right; |
| 269 | 262 |
bool _empty; |
| 270 | 263 |
public: |
| 271 | 264 |
|
| 272 | 265 |
///Default constructor: creates an empty box |
| 273 | 266 |
Box() { _empty = true; }
|
| 274 | 267 |
|
| 275 | 268 |
///Construct a box from one point |
| 276 | 269 |
Box(Point<T> a) {
|
| 277 | 270 |
_bottom_left = _top_right = a; |
| 278 | 271 |
_empty = false; |
| 279 | 272 |
} |
| 280 | 273 |
|
| 281 | 274 |
///Construct a box from two points |
| 282 | 275 |
|
| 283 | 276 |
///Construct a box from two points. |
| 284 | 277 |
///\param a The bottom left corner. |
| 285 | 278 |
///\param b The top right corner. |
| 286 | 279 |
///\warning The coordinates of the bottom left corner must be no more |
| 287 | 280 |
///than those of the top right one. |
| 288 | 281 |
Box(Point<T> a,Point<T> b) |
| 289 | 282 |
{
|
| 290 | 283 |
_bottom_left = a; |
| 291 | 284 |
_top_right = b; |
| 292 | 285 |
_empty = false; |
| 293 | 286 |
} |
| 294 | 287 |
|
| 295 | 288 |
///Construct a box from four numbers |
| 296 | 289 |
|
| 297 | 290 |
///Construct a box from four numbers. |
| 298 | 291 |
///\param l The left side of the box. |
| 299 | 292 |
///\param b The bottom of the box. |
| 300 | 293 |
///\param r The right side of the box. |
| 301 | 294 |
///\param t The top of the box. |
| 302 | 295 |
///\warning The left side must be no more than the right side and |
| 303 | 296 |
///bottom must be no more than the top. |
| 304 | 297 |
Box(T l,T b,T r,T t) |
| 305 | 298 |
{
|
| 306 | 299 |
_bottom_left=Point<T>(l,b); |
| 307 | 300 |
_top_right=Point<T>(r,t); |
| 308 | 301 |
_empty = false; |
| 309 | 302 |
} |
| 310 | 303 |
|
| 311 | 304 |
///Return \c true if the box is empty. |
| 312 | 305 |
|
| 313 | 306 |
///Return \c true if the box is empty (i.e. return \c false |
| 314 | 307 |
///if at least one point was added to the box or the coordinates of |
| 315 | 308 |
///the box were set). |
| 316 | 309 |
/// |
| 317 | 310 |
///The coordinates of an empty box are not defined. |
| 318 | 311 |
bool empty() const {
|
| 319 | 312 |
return _empty; |
| 320 | 313 |
} |
| 321 | 314 |
|
| 322 | 315 |
///Make the box empty |
| 323 | 316 |
void clear() {
|
| 324 | 317 |
_empty = true; |
| 325 | 318 |
} |
| 326 | 319 |
|
| 327 | 320 |
///Give back the bottom left corner of the box |
| 328 | 321 |
|
| 329 | 322 |
///Give back the bottom left corner of the box. |
| 330 | 323 |
///If the box is empty, then the return value is not defined. |
| 331 | 324 |
Point<T> bottomLeft() const {
|
| 332 | 325 |
return _bottom_left; |
| 333 | 326 |
} |
| 334 | 327 |
|
| 335 | 328 |
///Set the bottom left corner of the box |
| 336 | 329 |
|
| 337 | 330 |
///Set the bottom left corner of the box. |
| 338 | 331 |
///\pre The box must not be empty. |
| 339 | 332 |
void bottomLeft(Point<T> p) {
|
| 340 | 333 |
_bottom_left = p; |
| 341 | 334 |
} |
| 342 | 335 |
|
| 343 | 336 |
///Give back the top right corner of the box |
| 344 | 337 |
|
| 345 | 338 |
///Give back the top right corner of the box. |
| 346 | 339 |
///If the box is empty, then the return value is not defined. |
| 347 | 340 |
Point<T> topRight() const {
|
| 348 | 341 |
return _top_right; |
| 349 | 342 |
} |
| 350 | 343 |
|
| 351 | 344 |
///Set the top right corner of the box |
| 352 | 345 |
|
| 353 | 346 |
///Set the top right corner of the box. |
| 354 | 347 |
///\pre The box must not be empty. |
| 355 | 348 |
void topRight(Point<T> p) {
|
| 356 | 349 |
_top_right = p; |
| 357 | 350 |
} |
| 358 | 351 |
|
| 359 | 352 |
///Give back the bottom right corner of the box |
| 360 | 353 |
|
| 361 | 354 |
///Give back the bottom right corner of the box. |
| 362 | 355 |
///If the box is empty, then the return value is not defined. |
| 363 | 356 |
Point<T> bottomRight() const {
|
| 364 | 357 |
return Point<T>(_top_right.x,_bottom_left.y); |
| 365 | 358 |
} |
| 366 | 359 |
|
| 367 | 360 |
///Set the bottom right corner of the box |
| 368 | 361 |
|
| 369 | 362 |
///Set the bottom right corner of the box. |
| 370 | 363 |
///\pre The box must not be empty. |
| 371 | 364 |
void bottomRight(Point<T> p) {
|
| 372 | 365 |
_top_right.x = p.x; |
| 373 | 366 |
_bottom_left.y = p.y; |
| 374 | 367 |
} |
| 375 | 368 |
|
| 376 | 369 |
///Give back the top left corner of the box |
| 377 | 370 |
|
| 378 | 371 |
///Give back the top left corner of the box. |
| 379 | 372 |
///If the box is empty, then the return value is not defined. |
| 380 | 373 |
Point<T> topLeft() const {
|
| 381 | 374 |
return Point<T>(_bottom_left.x,_top_right.y); |
| 382 | 375 |
} |
| 383 | 376 |
|
| 384 | 377 |
///Set the top left corner of the box |
| 385 | 378 |
|
| 386 | 379 |
///Set the top left corner of the box. |
| 387 | 380 |
///\pre The box must not be empty. |
| 388 | 381 |
void topLeft(Point<T> p) {
|
| 389 | 382 |
_top_right.y = p.y; |
| 390 | 383 |
_bottom_left.x = p.x; |
| 391 | 384 |
} |
| 392 | 385 |
|
| 393 | 386 |
///Give back the bottom of the box |
| 394 | 387 |
|
| 395 | 388 |
///Give back the bottom of the box. |
| 396 | 389 |
///If the box is empty, then the return value is not defined. |
| 397 | 390 |
T bottom() const {
|
| 398 | 391 |
return _bottom_left.y; |
| 399 | 392 |
} |
| 400 | 393 |
|
| 401 | 394 |
///Set the bottom of the box |
| 402 | 395 |
|
| 403 | 396 |
///Set the bottom of the box. |
| 404 | 397 |
///\pre The box must not be empty. |
| 405 | 398 |
void bottom(T t) {
|
| 406 | 399 |
_bottom_left.y = t; |
| 407 | 400 |
} |
| 408 | 401 |
|
| 409 | 402 |
///Give back the top of the box |
| 410 | 403 |
|
| 411 | 404 |
///Give back the top of the box. |
| 412 | 405 |
///If the box is empty, then the return value is not defined. |
| 413 | 406 |
T top() const {
|
| 414 | 407 |
return _top_right.y; |
| 415 | 408 |
} |
| 416 | 409 |
|
| 417 | 410 |
///Set the top of the box |
| 418 | 411 |
|
| 419 | 412 |
///Set the top of the box. |
| 420 | 413 |
///\pre The box must not be empty. |
| 421 | 414 |
void top(T t) {
|
| 422 | 415 |
_top_right.y = t; |
| 423 | 416 |
} |
| 424 | 417 |
|
| 425 | 418 |
///Give back the left side of the box |
| 426 | 419 |
|
| 427 | 420 |
///Give back the left side of the box. |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_DIMACS_H |
| 20 | 20 |
#define LEMON_DIMACS_H |
| 21 | 21 |
|
| 22 | 22 |
#include <iostream> |
| 23 | 23 |
#include <string> |
| 24 | 24 |
#include <vector> |
| 25 |
#include <limits> |
|
| 25 | 26 |
#include <lemon/maps.h> |
| 26 | 27 |
#include <lemon/error.h> |
| 27 |
|
|
| 28 | 28 |
/// \ingroup dimacs_group |
| 29 | 29 |
/// \file |
| 30 | 30 |
/// \brief DIMACS file format reader. |
| 31 | 31 |
|
| 32 | 32 |
namespace lemon {
|
| 33 | 33 |
|
| 34 | 34 |
/// \addtogroup dimacs_group |
| 35 | 35 |
/// @{
|
| 36 | 36 |
|
| 37 | 37 |
/// DIMACS file type descriptor. |
| 38 | 38 |
struct DimacsDescriptor |
| 39 | 39 |
{
|
| 40 |
///File type enum |
|
| 41 |
enum Type |
|
| 42 |
{
|
|
| 43 |
NONE, MIN, MAX, SP, MAT |
|
| 44 |
|
|
| 40 |
///\brief DIMACS file type enum |
|
| 41 |
/// |
|
| 42 |
///DIMACS file type enum. |
|
| 43 |
enum Type {
|
|
| 44 |
NONE, ///< Undefined type. |
|
| 45 |
MIN, ///< DIMACS file type for minimum cost flow problems. |
|
| 46 |
MAX, ///< DIMACS file type for maximum flow problems. |
|
| 47 |
SP, ///< DIMACS file type for shostest path problems. |
|
| 48 |
MAT ///< DIMACS file type for plain graphs and matching problems. |
|
| 49 |
}; |
|
| 45 | 50 |
///The file type |
| 46 | 51 |
Type type; |
| 47 | 52 |
///The number of nodes in the graph |
| 48 | 53 |
int nodeNum; |
| 49 | 54 |
///The number of edges in the graph |
| 50 | 55 |
int edgeNum; |
| 51 | 56 |
int lineShift; |
| 52 |
/// |
|
| 57 |
///Constructor. It sets the type to \c NONE. |
|
| 53 | 58 |
DimacsDescriptor() : type(NONE) {}
|
| 54 | 59 |
}; |
| 55 | 60 |
|
| 56 | 61 |
///Discover the type of a DIMACS file |
| 57 | 62 |
|
| 58 |
///It starts seeking the begining of the file for the problem type |
|
| 59 |
///and size info. The found data is returned in a special struct |
|
| 60 |
///that can be evaluated and passed to the appropriate reader |
|
| 61 |
///function. |
|
| 63 |
///This function starts seeking the beginning of the given file for the |
|
| 64 |
///problem type and size info. |
|
| 65 |
///The found data is returned in a special struct that can be evaluated |
|
| 66 |
///and passed to the appropriate reader function. |
|
| 62 | 67 |
DimacsDescriptor dimacsType(std::istream& is) |
| 63 | 68 |
{
|
| 64 | 69 |
DimacsDescriptor r; |
| 65 | 70 |
std::string problem,str; |
| 66 | 71 |
char c; |
| 67 | 72 |
r.lineShift=0; |
| 68 | 73 |
while (is >> c) |
| 69 | 74 |
switch(c) |
| 70 | 75 |
{
|
| 71 | 76 |
case 'p': |
| 72 | 77 |
if(is >> problem >> r.nodeNum >> r.edgeNum) |
| 73 | 78 |
{
|
| 74 | 79 |
getline(is, str); |
| 75 | 80 |
r.lineShift++; |
| 76 | 81 |
if(problem=="min") r.type=DimacsDescriptor::MIN; |
| 77 | 82 |
else if(problem=="max") r.type=DimacsDescriptor::MAX; |
| 78 | 83 |
else if(problem=="sp") r.type=DimacsDescriptor::SP; |
| 79 | 84 |
else if(problem=="mat") r.type=DimacsDescriptor::MAT; |
| 80 | 85 |
else throw FormatError("Unknown problem type");
|
| 81 | 86 |
return r; |
| 82 | 87 |
} |
| 83 | 88 |
else |
| 84 | 89 |
{
|
| 85 | 90 |
throw FormatError("Missing or wrong problem type declaration.");
|
| 86 | 91 |
} |
| 87 | 92 |
break; |
| 88 | 93 |
case 'c': |
| 89 | 94 |
getline(is, str); |
| 90 | 95 |
r.lineShift++; |
| 91 | 96 |
break; |
| 92 | 97 |
default: |
| 93 | 98 |
throw FormatError("Unknown DIMACS declaration.");
|
| 94 | 99 |
} |
| 95 | 100 |
throw FormatError("Missing problem type declaration.");
|
| 96 | 101 |
} |
| 97 | 102 |
|
| 98 | 103 |
|
| 99 |
|
|
| 100 |
/// DIMACS minimum cost flow reader function. |
|
| 104 |
/// \brief DIMACS minimum cost flow reader function. |
|
| 101 | 105 |
/// |
| 102 | 106 |
/// This function reads a minimum cost flow instance from DIMACS format, |
| 103 | 107 |
/// i.e. from a DIMACS file having a line starting with |
| 104 | 108 |
/// \code |
| 105 | 109 |
/// p min |
| 106 | 110 |
/// \endcode |
| 107 | 111 |
/// At the beginning, \c g is cleared by \c g.clear(). The supply |
| 108 |
/// amount of the nodes are written to \c supply (signed). The |
|
| 109 |
/// lower bounds, capacities and costs of the arcs are written to |
|
| 110 |
/// |
|
| 112 |
/// amount of the nodes are written to the \c supply node map |
|
| 113 |
/// (they are signed values). The lower bounds, capacities and costs |
|
| 114 |
/// of the arcs are written to the \c lower, \c capacity and \c cost |
|
| 115 |
/// arc maps. |
|
| 116 |
/// |
|
| 117 |
/// If the capacity of an arc is less than the lower bound, it will |
|
| 118 |
/// be set to "infinite" instead. The actual value of "infinite" is |
|
| 119 |
/// contolled by the \c infty parameter. If it is 0 (the default value), |
|
| 120 |
/// \c std::numeric_limits<Capacity>::infinity() will be used if available, |
|
| 121 |
/// \c std::numeric_limits<Capacity>::max() otherwise. If \c infty is set to |
|
| 122 |
/// a non-zero value, that value will be used as "infinite". |
|
| 111 | 123 |
/// |
| 112 | 124 |
/// If the file type was previously evaluated by dimacsType(), then |
| 113 | 125 |
/// the descriptor struct should be given by the \c dest parameter. |
| 114 | 126 |
template <typename Digraph, typename LowerMap, |
| 115 | 127 |
typename CapacityMap, typename CostMap, |
| 116 | 128 |
typename SupplyMap> |
| 117 | 129 |
void readDimacsMin(std::istream& is, |
| 118 | 130 |
Digraph &g, |
| 119 | 131 |
LowerMap& lower, |
| 120 | 132 |
CapacityMap& capacity, |
| 121 | 133 |
CostMap& cost, |
| 122 | 134 |
SupplyMap& supply, |
| 135 |
typename CapacityMap::Value infty = 0, |
|
| 123 | 136 |
DimacsDescriptor desc=DimacsDescriptor()) |
| 124 | 137 |
{
|
| 125 | 138 |
g.clear(); |
| 126 | 139 |
std::vector<typename Digraph::Node> nodes; |
| 127 | 140 |
typename Digraph::Arc e; |
| 128 | 141 |
std::string problem, str; |
| 129 | 142 |
char c; |
| 130 | 143 |
int i, j; |
| 131 | 144 |
if(desc.type==DimacsDescriptor::NONE) desc=dimacsType(is); |
| 132 | 145 |
if(desc.type!=DimacsDescriptor::MIN) |
| 133 | 146 |
throw FormatError("Problem type mismatch");
|
| 134 | 147 |
|
| 135 | 148 |
nodes.resize(desc.nodeNum + 1); |
| 136 | 149 |
for (int k = 1; k <= desc.nodeNum; ++k) {
|
| 137 | 150 |
nodes[k] = g.addNode(); |
| 138 | 151 |
supply.set(nodes[k], 0); |
| 139 | 152 |
} |
| 140 | 153 |
|
| 141 | 154 |
typename SupplyMap::Value sup; |
| 142 | 155 |
typename CapacityMap::Value low; |
| 143 | 156 |
typename CapacityMap::Value cap; |
| 144 | 157 |
typename CostMap::Value co; |
| 158 |
typedef typename CapacityMap::Value Capacity; |
|
| 159 |
if(infty==0) |
|
| 160 |
infty = std::numeric_limits<Capacity>::has_infinity ? |
|
| 161 |
std::numeric_limits<Capacity>::infinity() : |
|
| 162 |
std::numeric_limits<Capacity>::max(); |
|
| 163 |
|
|
| 145 | 164 |
while (is >> c) {
|
| 146 | 165 |
switch (c) {
|
| 147 | 166 |
case 'c': // comment line |
| 148 | 167 |
getline(is, str); |
| 149 | 168 |
break; |
| 150 | 169 |
case 'n': // node definition line |
| 151 | 170 |
is >> i >> sup; |
| 152 | 171 |
getline(is, str); |
| 153 | 172 |
supply.set(nodes[i], sup); |
| 154 | 173 |
break; |
| 155 |
case 'a': // arc |
|
| 174 |
case 'a': // arc definition line |
|
| 156 | 175 |
is >> i >> j >> low >> cap >> co; |
| 157 | 176 |
getline(is, str); |
| 158 | 177 |
e = g.addArc(nodes[i], nodes[j]); |
| 159 | 178 |
lower.set(e, low); |
| 160 |
if (cap >= |
|
| 179 |
if (cap >= low) |
|
| 161 | 180 |
capacity.set(e, cap); |
| 162 | 181 |
else |
| 163 |
capacity.set(e, |
|
| 182 |
capacity.set(e, infty); |
|
| 164 | 183 |
cost.set(e, co); |
| 165 | 184 |
break; |
| 166 | 185 |
} |
| 167 | 186 |
} |
| 168 | 187 |
} |
| 169 | 188 |
|
| 170 | 189 |
template<typename Digraph, typename CapacityMap> |
| 171 | 190 |
void _readDimacs(std::istream& is, |
| 172 | 191 |
Digraph &g, |
| 173 | 192 |
CapacityMap& capacity, |
| 174 | 193 |
typename Digraph::Node &s, |
| 175 | 194 |
typename Digraph::Node &t, |
| 195 |
typename CapacityMap::Value infty = 0, |
|
| 176 | 196 |
DimacsDescriptor desc=DimacsDescriptor()) {
|
| 177 | 197 |
g.clear(); |
| 178 | 198 |
s=t=INVALID; |
| 179 | 199 |
std::vector<typename Digraph::Node> nodes; |
| 180 | 200 |
typename Digraph::Arc e; |
| 181 | 201 |
char c, d; |
| 182 | 202 |
int i, j; |
| 183 | 203 |
typename CapacityMap::Value _cap; |
| 184 | 204 |
std::string str; |
| 185 | 205 |
nodes.resize(desc.nodeNum + 1); |
| 186 | 206 |
for (int k = 1; k <= desc.nodeNum; ++k) {
|
| 187 | 207 |
nodes[k] = g.addNode(); |
| 188 | 208 |
} |
| 209 |
typedef typename CapacityMap::Value Capacity; |
|
| 189 | 210 |
|
| 211 |
if(infty==0) |
|
| 212 |
infty = std::numeric_limits<Capacity>::has_infinity ? |
|
| 213 |
std::numeric_limits<Capacity>::infinity() : |
|
| 214 |
std::numeric_limits<Capacity>::max(); |
|
| 215 |
|
|
| 190 | 216 |
while (is >> c) {
|
| 191 | 217 |
switch (c) {
|
| 192 | 218 |
case 'c': // comment line |
| 193 | 219 |
getline(is, str); |
| 194 | 220 |
break; |
| 195 | 221 |
case 'n': // node definition line |
| 196 | 222 |
if (desc.type==DimacsDescriptor::SP) { // shortest path problem
|
| 197 | 223 |
is >> i; |
| 198 | 224 |
getline(is, str); |
| 199 | 225 |
s = nodes[i]; |
| 200 | 226 |
} |
| 201 | 227 |
if (desc.type==DimacsDescriptor::MAX) { // max flow problem
|
| 202 | 228 |
is >> i >> d; |
| 203 | 229 |
getline(is, str); |
| 204 | 230 |
if (d == 's') s = nodes[i]; |
| 205 | 231 |
if (d == 't') t = nodes[i]; |
| 206 | 232 |
} |
| 207 | 233 |
break; |
| 208 |
case 'a': // arc (arc) definition line |
|
| 209 |
if (desc.type==DimacsDescriptor::SP || |
|
| 210 |
|
|
| 234 |
case 'a': // arc definition line |
|
| 235 |
if (desc.type==DimacsDescriptor::SP) {
|
|
| 211 | 236 |
is >> i >> j >> _cap; |
| 212 | 237 |
getline(is, str); |
| 213 | 238 |
e = g.addArc(nodes[i], nodes[j]); |
| 214 | 239 |
capacity.set(e, _cap); |
| 215 |
} |
|
| 240 |
} |
|
| 241 |
else if (desc.type==DimacsDescriptor::MAX) {
|
|
| 242 |
is >> i >> j >> _cap; |
|
| 243 |
getline(is, str); |
|
| 244 |
e = g.addArc(nodes[i], nodes[j]); |
|
| 245 |
if (_cap >= 0) |
|
| 246 |
capacity.set(e, _cap); |
|
| 247 |
else |
|
| 248 |
capacity.set(e, infty); |
|
| 249 |
} |
|
| 250 |
else {
|
|
| 216 | 251 |
is >> i >> j; |
| 217 | 252 |
getline(is, str); |
| 218 | 253 |
g.addArc(nodes[i], nodes[j]); |
| 219 | 254 |
} |
| 220 | 255 |
break; |
| 221 | 256 |
} |
| 222 | 257 |
} |
| 223 | 258 |
} |
| 224 | 259 |
|
| 225 |
/// DIMACS maximum flow reader function. |
|
| 260 |
/// \brief DIMACS maximum flow reader function. |
|
| 226 | 261 |
/// |
| 227 | 262 |
/// This function reads a maximum flow instance from DIMACS format, |
| 228 | 263 |
/// i.e. from a DIMACS file having a line starting with |
| 229 | 264 |
/// \code |
| 230 | 265 |
/// p max |
| 231 | 266 |
/// \endcode |
| 232 | 267 |
/// At the beginning, \c g is cleared by \c g.clear(). The arc |
| 233 |
/// capacities are written to \c capacity and \c s and \c t are |
|
| 234 |
/// set to the source and the target nodes. |
|
| 268 |
/// capacities are written to the \c capacity arc map and \c s and |
|
| 269 |
/// \c t are set to the source and the target nodes. |
|
| 270 |
/// |
|
| 271 |
/// If the capacity of an arc is negative, it will |
|
| 272 |
/// be set to "infinite" instead. The actual value of "infinite" is |
|
| 273 |
/// contolled by the \c infty parameter. If it is 0 (the default value), |
|
| 274 |
/// \c std::numeric_limits<Capacity>::infinity() will be used if available, |
|
| 275 |
/// \c std::numeric_limits<Capacity>::max() otherwise. If \c infty is set to |
|
| 276 |
/// a non-zero value, that value will be used as "infinite". |
|
| 235 | 277 |
/// |
| 236 | 278 |
/// If the file type was previously evaluated by dimacsType(), then |
| 237 | 279 |
/// the descriptor struct should be given by the \c dest parameter. |
| 238 | 280 |
template<typename Digraph, typename CapacityMap> |
| 239 | 281 |
void readDimacsMax(std::istream& is, |
| 240 | 282 |
Digraph &g, |
| 241 | 283 |
CapacityMap& capacity, |
| 242 | 284 |
typename Digraph::Node &s, |
| 243 | 285 |
typename Digraph::Node &t, |
| 286 |
typename CapacityMap::Value infty = 0, |
|
| 244 | 287 |
DimacsDescriptor desc=DimacsDescriptor()) {
|
| 245 | 288 |
if(desc.type==DimacsDescriptor::NONE) desc=dimacsType(is); |
| 246 | 289 |
if(desc.type!=DimacsDescriptor::MAX) |
| 247 | 290 |
throw FormatError("Problem type mismatch");
|
| 248 |
_readDimacs(is,g,capacity,s,t,desc); |
|
| 291 |
_readDimacs(is,g,capacity,s,t,infty,desc); |
|
| 249 | 292 |
} |
| 250 | 293 |
|
| 251 |
/// DIMACS shortest path reader function. |
|
| 294 |
/// \brief DIMACS shortest path reader function. |
|
| 252 | 295 |
/// |
| 253 | 296 |
/// This function reads a shortest path instance from DIMACS format, |
| 254 | 297 |
/// i.e. from a DIMACS file having a line starting with |
| 255 | 298 |
/// \code |
| 256 | 299 |
/// p sp |
| 257 | 300 |
/// \endcode |
| 258 | 301 |
/// At the beginning, \c g is cleared by \c g.clear(). The arc |
| 259 |
/// lengths are written to \c length and \c s is set to the |
|
| 302 |
/// lengths are written to the \c length arc map and \c s is set to the |
|
| 260 | 303 |
/// source node. |
| 261 | 304 |
/// |
| 262 | 305 |
/// If the file type was previously evaluated by dimacsType(), then |
| 263 | 306 |
/// the descriptor struct should be given by the \c dest parameter. |
| 264 | 307 |
template<typename Digraph, typename LengthMap> |
| 265 | 308 |
void readDimacsSp(std::istream& is, |
| 266 | 309 |
Digraph &g, |
| 267 | 310 |
LengthMap& length, |
| 268 | 311 |
typename Digraph::Node &s, |
| 269 | 312 |
DimacsDescriptor desc=DimacsDescriptor()) {
|
| 270 | 313 |
typename Digraph::Node t; |
| 271 | 314 |
if(desc.type==DimacsDescriptor::NONE) desc=dimacsType(is); |
| 272 | 315 |
if(desc.type!=DimacsDescriptor::SP) |
| 273 | 316 |
throw FormatError("Problem type mismatch");
|
| 274 |
_readDimacs(is, g, length, s, t,desc); |
|
| 317 |
_readDimacs(is, g, length, s, t, 0, desc); |
|
| 275 | 318 |
} |
| 276 | 319 |
|
| 277 |
/// DIMACS capacitated digraph reader function. |
|
| 320 |
/// \brief DIMACS capacitated digraph reader function. |
|
| 278 | 321 |
/// |
| 279 | 322 |
/// This function reads an arc capacitated digraph instance from |
| 280 |
/// DIMACS ' |
|
| 323 |
/// DIMACS 'max' or 'sp' format. |
|
| 281 | 324 |
/// At the beginning, \c g is cleared by \c g.clear() |
| 282 |
/// and the arc capacities/lengths are written to \c capacity |
|
| 325 |
/// and the arc capacities/lengths are written to the \c capacity |
|
| 326 |
/// arc map. |
|
| 327 |
/// |
|
| 328 |
/// In case of the 'max' format, if the capacity of an arc is negative, |
|
| 329 |
/// it will |
|
| 330 |
/// be set to "infinite" instead. The actual value of "infinite" is |
|
| 331 |
/// contolled by the \c infty parameter. If it is 0 (the default value), |
|
| 332 |
/// \c std::numeric_limits<Capacity>::infinity() will be used if available, |
|
| 333 |
/// \c std::numeric_limits<Capacity>::max() otherwise. If \c infty is set to |
|
| 334 |
/// a non-zero value, that value will be used as "infinite". |
|
| 283 | 335 |
/// |
| 284 | 336 |
/// If the file type was previously evaluated by dimacsType(), then |
| 285 | 337 |
/// the descriptor struct should be given by the \c dest parameter. |
| 286 | 338 |
template<typename Digraph, typename CapacityMap> |
| 287 | 339 |
void readDimacsCap(std::istream& is, |
| 288 | 340 |
Digraph &g, |
| 289 | 341 |
CapacityMap& capacity, |
| 342 |
typename CapacityMap::Value infty = 0, |
|
| 290 | 343 |
DimacsDescriptor desc=DimacsDescriptor()) {
|
| 291 | 344 |
typename Digraph::Node u,v; |
| 292 | 345 |
if(desc.type==DimacsDescriptor::NONE) desc=dimacsType(is); |
| 293 | 346 |
if(desc.type!=DimacsDescriptor::MAX || desc.type!=DimacsDescriptor::SP) |
| 294 | 347 |
throw FormatError("Problem type mismatch");
|
| 295 |
_readDimacs(is, g, capacity, u, v, desc); |
|
| 348 |
_readDimacs(is, g, capacity, u, v, infty, desc); |
|
| 296 | 349 |
} |
| 297 | 350 |
|
| 298 |
|
|
| 351 |
template<typename Graph> |
|
| 352 |
typename enable_if<lemon::UndirectedTagIndicator<Graph>,void>::type |
|
| 353 |
_addArcEdge(Graph &g, typename Graph::Node s, typename Graph::Node t, |
|
| 354 |
dummy<0> = 0) |
|
| 355 |
{
|
|
| 356 |
g.addEdge(s,t); |
|
| 357 |
} |
|
| 358 |
template<typename Graph> |
|
| 359 |
typename disable_if<lemon::UndirectedTagIndicator<Graph>,void>::type |
|
| 360 |
_addArcEdge(Graph &g, typename Graph::Node s, typename Graph::Node t, |
|
| 361 |
dummy<1> = 1) |
|
| 362 |
{
|
|
| 363 |
g.addArc(s,t); |
|
| 364 |
} |
|
| 365 |
|
|
| 366 |
/// \brief DIMACS plain (di)graph reader function. |
|
| 299 | 367 |
/// |
| 300 |
/// This function reads a digraph without any designated nodes and |
|
| 301 |
/// maps from DIMACS format, i.e. from DIMACS files having a line |
|
| 302 |
/// |
|
| 368 |
/// This function reads a plain (di)graph without any designated nodes |
|
| 369 |
/// and maps (e.g. a matching instance) from DIMACS format, i.e. from |
|
| 370 |
/// DIMACS files having a line starting with |
|
| 303 | 371 |
/// \code |
| 304 | 372 |
/// p mat |
| 305 | 373 |
/// \endcode |
| 306 | 374 |
/// At the beginning, \c g is cleared by \c g.clear(). |
| 307 | 375 |
/// |
| 308 | 376 |
/// If the file type was previously evaluated by dimacsType(), then |
| 309 | 377 |
/// the descriptor struct should be given by the \c dest parameter. |
| 310 |
template<typename Digraph> |
|
| 311 |
void readDimacsMat(std::istream& is, Digraph &g, |
|
| 312 |
DimacsDescriptor desc=DimacsDescriptor()) {
|
|
| 313 |
typename Digraph::Node u,v; |
|
| 314 |
|
|
| 378 |
template<typename Graph> |
|
| 379 |
void readDimacsMat(std::istream& is, Graph &g, |
|
| 380 |
DimacsDescriptor desc=DimacsDescriptor()) |
|
| 381 |
{
|
|
| 315 | 382 |
if(desc.type==DimacsDescriptor::NONE) desc=dimacsType(is); |
| 316 | 383 |
if(desc.type!=DimacsDescriptor::MAT) |
| 317 | 384 |
throw FormatError("Problem type mismatch");
|
| 318 |
|
|
| 385 |
|
|
| 386 |
g.clear(); |
|
| 387 |
std::vector<typename Graph::Node> nodes; |
|
| 388 |
char c; |
|
| 389 |
int i, j; |
|
| 390 |
std::string str; |
|
| 391 |
nodes.resize(desc.nodeNum + 1); |
|
| 392 |
for (int k = 1; k <= desc.nodeNum; ++k) {
|
|
| 393 |
nodes[k] = g.addNode(); |
|
| 394 |
} |
|
| 395 |
|
|
| 396 |
while (is >> c) {
|
|
| 397 |
switch (c) {
|
|
| 398 |
case 'c': // comment line |
|
| 399 |
getline(is, str); |
|
| 400 |
break; |
|
| 401 |
case 'n': // node definition line |
|
| 402 |
break; |
|
| 403 |
case 'a': // arc definition line |
|
| 404 |
is >> i >> j; |
|
| 405 |
getline(is, str); |
|
| 406 |
_addArcEdge(g,nodes[i], nodes[j]); |
|
| 407 |
break; |
|
| 408 |
} |
|
| 409 |
} |
|
| 319 | 410 |
} |
| 320 | 411 |
|
| 321 | 412 |
/// DIMACS plain digraph writer function. |
| 322 | 413 |
/// |
| 323 | 414 |
/// This function writes a digraph without any designated nodes and |
| 324 | 415 |
/// maps into DIMACS format, i.e. into DIMACS file having a line |
| 325 | 416 |
/// starting with |
| 326 | 417 |
/// \code |
| 327 | 418 |
/// p mat |
| 328 | 419 |
/// \endcode |
| 329 | 420 |
/// If \c comment is not empty, then it will be printed in the first line |
| 330 | 421 |
/// prefixed by 'c'. |
| 331 | 422 |
template<typename Digraph> |
| 332 | 423 |
void writeDimacsMat(std::ostream& os, const Digraph &g, |
| 333 | 424 |
std::string comment="") {
|
| 334 | 425 |
typedef typename Digraph::NodeIt NodeIt; |
| 335 | 426 |
typedef typename Digraph::ArcIt ArcIt; |
| 336 | 427 |
|
| 337 | 428 |
if(!comment.empty()) |
| 338 | 429 |
os << "c " << comment << std::endl; |
| 339 | 430 |
os << "p mat " << g.nodeNum() << " " << g.arcNum() << std::endl; |
| 340 | 431 |
|
| 341 | 432 |
typename Digraph::template NodeMap<int> nodes(g); |
| 342 | 433 |
int i = 1; |
| 343 | 434 |
for(NodeIt v(g); v != INVALID; ++v) {
|
| 344 | 435 |
nodes.set(v, i); |
| 345 | 436 |
++i; |
| 346 | 437 |
} |
| 347 | 438 |
for(ArcIt e(g); e != INVALID; ++e) {
|
| 348 | 439 |
os << "a " << nodes[g.source(e)] << " " << nodes[g.target(e)] |
| 349 | 440 |
<< std::endl; |
| 350 | 441 |
} |
| 351 | 442 |
} |
| 352 | 443 |
|
| 353 | 444 |
/// @} |
| 354 | 445 |
|
| 355 | 446 |
} //namespace lemon |
| 356 | 447 |
|
| 357 | 448 |
#endif //LEMON_DIMACS_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2008 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_EDGE_SET_H |
| 20 | 20 |
#define LEMON_EDGE_SET_H |
| 21 | 21 |
|
| 22 | 22 |
#include <lemon/core.h> |
| 23 | 23 |
#include <lemon/bits/edge_set_extender.h> |
| 24 | 24 |
|
| 25 |
/// \ingroup |
|
| 25 |
/// \ingroup graphs |
|
| 26 | 26 |
/// \file |
| 27 | 27 |
/// \brief ArcSet and EdgeSet classes. |
| 28 | 28 |
/// |
| 29 | 29 |
/// Graphs which use another graph's node-set as own. |
| 30 | 30 |
namespace lemon {
|
| 31 | 31 |
|
| 32 |
template <typename |
|
| 32 |
template <typename GR> |
|
| 33 | 33 |
class ListArcSetBase {
|
| 34 | 34 |
public: |
| 35 | 35 |
|
| 36 |
typedef _Graph Graph; |
|
| 37 |
typedef typename Graph::Node Node; |
|
| 38 |
typedef typename |
|
| 36 |
typedef typename GR::Node Node; |
|
| 37 |
typedef typename GR::NodeIt NodeIt; |
|
| 39 | 38 |
|
| 40 | 39 |
protected: |
| 41 | 40 |
|
| 42 | 41 |
struct NodeT {
|
| 43 | 42 |
int first_out, first_in; |
| 44 | 43 |
NodeT() : first_out(-1), first_in(-1) {}
|
| 45 | 44 |
}; |
| 46 | 45 |
|
| 47 |
typedef typename ItemSetTraits< |
|
| 46 |
typedef typename ItemSetTraits<GR, Node>:: |
|
| 48 | 47 |
template Map<NodeT>::Type NodesImplBase; |
| 49 | 48 |
|
| 50 |
NodesImplBase* |
|
| 49 |
NodesImplBase* _nodes; |
|
| 51 | 50 |
|
| 52 | 51 |
struct ArcT {
|
| 53 | 52 |
Node source, target; |
| 54 | 53 |
int next_out, next_in; |
| 55 | 54 |
int prev_out, prev_in; |
| 56 | 55 |
ArcT() : prev_out(-1), prev_in(-1) {}
|
| 57 | 56 |
}; |
| 58 | 57 |
|
| 59 | 58 |
std::vector<ArcT> arcs; |
| 60 | 59 |
|
| 61 | 60 |
int first_arc; |
| 62 | 61 |
int first_free_arc; |
| 63 | 62 |
|
| 64 |
const |
|
| 63 |
const GR* _graph; |
|
| 65 | 64 |
|
| 66 |
void initalize(const Graph& _graph, NodesImplBase& _nodes) {
|
|
| 67 |
graph = &_graph; |
|
| 68 |
|
|
| 65 |
void initalize(const GR& graph, NodesImplBase& nodes) {
|
|
| 66 |
_graph = &graph; |
|
| 67 |
_nodes = &nodes; |
|
| 69 | 68 |
} |
| 70 | 69 |
|
| 71 | 70 |
public: |
| 72 | 71 |
|
| 73 | 72 |
class Arc {
|
| 74 |
friend class ListArcSetBase< |
|
| 73 |
friend class ListArcSetBase<GR>; |
|
| 75 | 74 |
protected: |
| 76 | 75 |
Arc(int _id) : id(_id) {}
|
| 77 | 76 |
int id; |
| 78 | 77 |
public: |
| 79 | 78 |
Arc() {}
|
| 80 | 79 |
Arc(Invalid) : id(-1) {}
|
| 81 | 80 |
bool operator==(const Arc& arc) const { return id == arc.id; }
|
| 82 | 81 |
bool operator!=(const Arc& arc) const { return id != arc.id; }
|
| 83 | 82 |
bool operator<(const Arc& arc) const { return id < arc.id; }
|
| 84 | 83 |
}; |
| 85 | 84 |
|
| 86 | 85 |
ListArcSetBase() : first_arc(-1), first_free_arc(-1) {}
|
| 87 | 86 |
|
| 87 |
Node addNode() {
|
|
| 88 |
LEMON_ASSERT(false, |
|
| 89 |
"This graph structure does not support node insertion"); |
|
| 90 |
return INVALID; // avoid warning |
|
| 91 |
} |
|
| 92 |
|
|
| 88 | 93 |
Arc addArc(const Node& u, const Node& v) {
|
| 89 | 94 |
int n; |
| 90 | 95 |
if (first_free_arc == -1) {
|
| 91 | 96 |
n = arcs.size(); |
| 92 | 97 |
arcs.push_back(ArcT()); |
| 93 | 98 |
} else {
|
| 94 | 99 |
n = first_free_arc; |
| 95 | 100 |
first_free_arc = arcs[first_free_arc].next_in; |
| 96 | 101 |
} |
| 97 |
arcs[n].next_in = (*nodes)[v].first_in; |
|
| 98 |
if ((*nodes)[v].first_in != -1) {
|
|
| 99 |
|
|
| 102 |
arcs[n].next_in = (*_nodes)[v].first_in; |
|
| 103 |
if ((*_nodes)[v].first_in != -1) {
|
|
| 104 |
arcs[(*_nodes)[v].first_in].prev_in = n; |
|
| 100 | 105 |
} |
| 101 |
(*nodes)[v].first_in = n; |
|
| 102 |
arcs[n].next_out = (*nodes)[u].first_out; |
|
| 103 |
if ((*nodes)[u].first_out != -1) {
|
|
| 104 |
arcs[(*nodes)[u].first_out].prev_out = n; |
|
| 106 |
(*_nodes)[v].first_in = n; |
|
| 107 |
arcs[n].next_out = (*_nodes)[u].first_out; |
|
| 108 |
if ((*_nodes)[u].first_out != -1) {
|
|
| 109 |
arcs[(*_nodes)[u].first_out].prev_out = n; |
|
| 105 | 110 |
} |
| 106 |
(* |
|
| 111 |
(*_nodes)[u].first_out = n; |
|
| 107 | 112 |
arcs[n].source = u; |
| 108 | 113 |
arcs[n].target = v; |
| 109 | 114 |
return Arc(n); |
| 110 | 115 |
} |
| 111 | 116 |
|
| 112 | 117 |
void erase(const Arc& arc) {
|
| 113 | 118 |
int n = arc.id; |
| 114 | 119 |
if (arcs[n].prev_in != -1) {
|
| 115 | 120 |
arcs[arcs[n].prev_in].next_in = arcs[n].next_in; |
| 116 | 121 |
} else {
|
| 117 |
(* |
|
| 122 |
(*_nodes)[arcs[n].target].first_in = arcs[n].next_in; |
|
| 118 | 123 |
} |
| 119 | 124 |
if (arcs[n].next_in != -1) {
|
| 120 | 125 |
arcs[arcs[n].next_in].prev_in = arcs[n].prev_in; |
| 121 | 126 |
} |
| 122 | 127 |
|
| 123 | 128 |
if (arcs[n].prev_out != -1) {
|
| 124 | 129 |
arcs[arcs[n].prev_out].next_out = arcs[n].next_out; |
| 125 | 130 |
} else {
|
| 126 |
(* |
|
| 131 |
(*_nodes)[arcs[n].source].first_out = arcs[n].next_out; |
|
| 127 | 132 |
} |
| 128 | 133 |
if (arcs[n].next_out != -1) {
|
| 129 | 134 |
arcs[arcs[n].next_out].prev_out = arcs[n].prev_out; |
| 130 | 135 |
} |
| 131 | 136 |
|
| 132 | 137 |
} |
| 133 | 138 |
|
| 134 | 139 |
void clear() {
|
| 135 | 140 |
Node node; |
| 136 | 141 |
for (first(node); node != INVALID; next(node)) {
|
| 137 |
(*nodes)[node].first_in = -1; |
|
| 138 |
(*nodes)[node].first_out = -1; |
|
| 142 |
(*_nodes)[node].first_in = -1; |
|
| 143 |
(*_nodes)[node].first_out = -1; |
|
| 139 | 144 |
} |
| 140 | 145 |
arcs.clear(); |
| 141 | 146 |
first_arc = -1; |
| 142 | 147 |
first_free_arc = -1; |
| 143 | 148 |
} |
| 144 | 149 |
|
| 145 | 150 |
void first(Node& node) const {
|
| 146 |
|
|
| 151 |
_graph->first(node); |
|
| 147 | 152 |
} |
| 148 | 153 |
|
| 149 | 154 |
void next(Node& node) const {
|
| 150 |
|
|
| 155 |
_graph->next(node); |
|
| 151 | 156 |
} |
| 152 | 157 |
|
| 153 | 158 |
void first(Arc& arc) const {
|
| 154 | 159 |
Node node; |
| 155 | 160 |
first(node); |
| 156 |
while (node != INVALID && (* |
|
| 161 |
while (node != INVALID && (*_nodes)[node].first_in == -1) {
|
|
| 157 | 162 |
next(node); |
| 158 | 163 |
} |
| 159 |
arc.id = (node == INVALID) ? -1 : (* |
|
| 164 |
arc.id = (node == INVALID) ? -1 : (*_nodes)[node].first_in; |
|
| 160 | 165 |
} |
| 161 | 166 |
|
| 162 | 167 |
void next(Arc& arc) const {
|
| 163 | 168 |
if (arcs[arc.id].next_in != -1) {
|
| 164 | 169 |
arc.id = arcs[arc.id].next_in; |
| 165 | 170 |
} else {
|
| 166 | 171 |
Node node = arcs[arc.id].target; |
| 167 | 172 |
next(node); |
| 168 |
while (node != INVALID && (* |
|
| 173 |
while (node != INVALID && (*_nodes)[node].first_in == -1) {
|
|
| 169 | 174 |
next(node); |
| 170 | 175 |
} |
| 171 |
arc.id = (node == INVALID) ? -1 : (* |
|
| 176 |
arc.id = (node == INVALID) ? -1 : (*_nodes)[node].first_in; |
|
| 172 | 177 |
} |
| 173 | 178 |
} |
| 174 | 179 |
|
| 175 | 180 |
void firstOut(Arc& arc, const Node& node) const {
|
| 176 |
arc.id = (* |
|
| 181 |
arc.id = (*_nodes)[node].first_out; |
|
| 177 | 182 |
} |
| 178 | 183 |
|
| 179 | 184 |
void nextOut(Arc& arc) const {
|
| 180 | 185 |
arc.id = arcs[arc.id].next_out; |
| 181 | 186 |
} |
| 182 | 187 |
|
| 183 | 188 |
void firstIn(Arc& arc, const Node& node) const {
|
| 184 |
arc.id = (* |
|
| 189 |
arc.id = (*_nodes)[node].first_in; |
|
| 185 | 190 |
} |
| 186 | 191 |
|
| 187 | 192 |
void nextIn(Arc& arc) const {
|
| 188 | 193 |
arc.id = arcs[arc.id].next_in; |
| 189 | 194 |
} |
| 190 | 195 |
|
| 191 |
int id(const Node& node) const { return
|
|
| 196 |
int id(const Node& node) const { return _graph->id(node); }
|
|
| 192 | 197 |
int id(const Arc& arc) const { return arc.id; }
|
| 193 | 198 |
|
| 194 |
Node nodeFromId(int ix) const { return
|
|
| 199 |
Node nodeFromId(int ix) const { return _graph->nodeFromId(ix); }
|
|
| 195 | 200 |
Arc arcFromId(int ix) const { return Arc(ix); }
|
| 196 | 201 |
|
| 197 |
int maxNodeId() const { return
|
|
| 202 |
int maxNodeId() const { return _graph->maxNodeId(); };
|
|
| 198 | 203 |
int maxArcId() const { return arcs.size() - 1; }
|
| 199 | 204 |
|
| 200 | 205 |
Node source(const Arc& arc) const { return arcs[arc.id].source;}
|
| 201 | 206 |
Node target(const Arc& arc) const { return arcs[arc.id].target;}
|
| 202 | 207 |
|
| 203 |
typedef typename ItemSetTraits< |
|
| 208 |
typedef typename ItemSetTraits<GR, Node>::ItemNotifier NodeNotifier; |
|
| 204 | 209 |
|
| 205 | 210 |
NodeNotifier& notifier(Node) const {
|
| 206 |
return |
|
| 211 |
return _graph->notifier(Node()); |
|
| 207 | 212 |
} |
| 208 | 213 |
|
| 209 |
template <typename _Value> |
|
| 210 |
class NodeMap : public Graph::template NodeMap<_Value> {
|
|
| 214 |
template <typename V> |
|
| 215 |
class NodeMap : public GR::template NodeMap<V> {
|
|
| 216 |
typedef typename GR::template NodeMap<V> Parent; |
|
| 217 |
|
|
| 211 | 218 |
public: |
| 212 | 219 |
|
| 213 |
|
|
| 220 |
explicit NodeMap(const ListArcSetBase<GR>& arcset) |
|
| 221 |
: Parent(*arcset._graph) {}
|
|
| 214 | 222 |
|
| 215 |
explicit NodeMap(const ListArcSetBase<Graph>& arcset) |
|
| 216 |
: Parent(*arcset.graph) {}
|
|
| 217 |
|
|
| 218 |
NodeMap(const ListArcSetBase<Graph>& arcset, const _Value& value) |
|
| 219 |
|
|
| 223 |
NodeMap(const ListArcSetBase<GR>& arcset, const V& value) |
|
| 224 |
: Parent(*arcset._graph, value) {}
|
|
| 220 | 225 |
|
| 221 | 226 |
NodeMap& operator=(const NodeMap& cmap) {
|
| 222 | 227 |
return operator=<NodeMap>(cmap); |
| 223 | 228 |
} |
| 224 | 229 |
|
| 225 | 230 |
template <typename CMap> |
| 226 | 231 |
NodeMap& operator=(const CMap& cmap) {
|
| 227 | 232 |
Parent::operator=(cmap); |
| 228 | 233 |
return *this; |
| 229 | 234 |
} |
| 230 | 235 |
}; |
| 231 | 236 |
|
| 232 | 237 |
}; |
| 233 | 238 |
|
| 234 |
/// \ingroup |
|
| 239 |
/// \ingroup graphs |
|
| 235 | 240 |
/// |
| 236 | 241 |
/// \brief Digraph using a node set of another digraph or graph and |
| 237 | 242 |
/// an own arc set. |
| 238 | 243 |
/// |
| 239 | 244 |
/// This structure can be used to establish another directed graph |
| 240 | 245 |
/// over a node set of an existing one. This class uses the same |
| 241 | 246 |
/// Node type as the underlying graph, and each valid node of the |
| 242 | 247 |
/// original graph is valid in this arc set, therefore the node |
| 243 | 248 |
/// objects of the original graph can be used directly with this |
| 244 | 249 |
/// class. The node handling functions (id handling, observing, and |
| 245 | 250 |
/// iterators) works equivalently as in the original graph. |
| 246 | 251 |
/// |
| 247 | 252 |
/// This implementation is based on doubly-linked lists, from each |
| 248 | 253 |
/// node the outgoing and the incoming arcs make up lists, therefore |
| 249 | 254 |
/// one arc can be erased in constant time. It also makes possible, |
| 250 | 255 |
/// that node can be removed from the underlying graph, in this case |
| 251 | 256 |
/// all arcs incident to the given node is erased from the arc set. |
| 252 | 257 |
/// |
| 253 |
/// \param |
|
| 258 |
/// \param GR The type of the graph which shares its node set with |
|
| 254 | 259 |
/// this class. Its interface must conform to the |
| 255 | 260 |
/// \ref concepts::Digraph "Digraph" or \ref concepts::Graph "Graph" |
| 256 | 261 |
/// concept. |
| 257 | 262 |
/// |
| 258 |
/// This class |
|
| 263 |
/// This class fully conforms to the \ref concepts::Digraph |
|
| 259 | 264 |
/// "Digraph" concept. |
| 260 |
template <typename _Graph> |
|
| 261 |
class ListArcSet : public ArcSetExtender<ListArcSetBase<_Graph> > {
|
|
| 265 |
template <typename GR> |
|
| 266 |
class ListArcSet : public ArcSetExtender<ListArcSetBase<GR> > {
|
|
| 267 |
typedef ArcSetExtender<ListArcSetBase<GR> > Parent; |
|
| 262 | 268 |
|
| 263 | 269 |
public: |
| 264 | 270 |
|
| 265 |
typedef ArcSetExtender<ListArcSetBase<_Graph> > Parent; |
|
| 266 |
|
|
| 267 | 271 |
typedef typename Parent::Node Node; |
| 268 | 272 |
typedef typename Parent::Arc Arc; |
| 269 | 273 |
|
| 270 |
typedef _Graph Graph; |
|
| 271 |
|
|
| 272 |
|
|
| 273 | 274 |
typedef typename Parent::NodesImplBase NodesImplBase; |
| 274 | 275 |
|
| 275 | 276 |
void eraseNode(const Node& node) {
|
| 276 | 277 |
Arc arc; |
| 277 | 278 |
Parent::firstOut(arc, node); |
| 278 | 279 |
while (arc != INVALID ) {
|
| 279 | 280 |
erase(arc); |
| 280 | 281 |
Parent::firstOut(arc, node); |
| 281 | 282 |
} |
| 282 | 283 |
|
| 283 | 284 |
Parent::firstIn(arc, node); |
| 284 | 285 |
while (arc != INVALID ) {
|
| 285 | 286 |
erase(arc); |
| 286 | 287 |
Parent::firstIn(arc, node); |
| 287 | 288 |
} |
| 288 | 289 |
} |
| 289 | 290 |
|
| 290 | 291 |
void clearNodes() {
|
| 291 | 292 |
Parent::clear(); |
| 292 | 293 |
} |
| 293 | 294 |
|
| 294 | 295 |
class NodesImpl : public NodesImplBase {
|
| 295 |
public: |
|
| 296 | 296 |
typedef NodesImplBase Parent; |
| 297 | 297 |
|
| 298 |
|
|
| 298 |
public: |
|
| 299 |
NodesImpl(const GR& graph, ListArcSet& arcset) |
|
| 299 | 300 |
: Parent(graph), _arcset(arcset) {}
|
| 300 | 301 |
|
| 301 | 302 |
virtual ~NodesImpl() {}
|
| 302 | 303 |
|
| 303 | 304 |
protected: |
| 304 | 305 |
|
| 305 | 306 |
virtual void erase(const Node& node) {
|
| 306 | 307 |
_arcset.eraseNode(node); |
| 307 | 308 |
Parent::erase(node); |
| 308 | 309 |
} |
| 309 | 310 |
virtual void erase(const std::vector<Node>& nodes) {
|
| 310 | 311 |
for (int i = 0; i < int(nodes.size()); ++i) {
|
| 311 | 312 |
_arcset.eraseNode(nodes[i]); |
| 312 | 313 |
} |
| 313 | 314 |
Parent::erase(nodes); |
| 314 | 315 |
} |
| 315 | 316 |
virtual void clear() {
|
| 316 | 317 |
_arcset.clearNodes(); |
| 317 | 318 |
Parent::clear(); |
| 318 | 319 |
} |
| 319 | 320 |
|
| 320 | 321 |
private: |
| 321 | 322 |
ListArcSet& _arcset; |
| 322 | 323 |
}; |
| 323 | 324 |
|
| 324 |
NodesImpl |
|
| 325 |
NodesImpl _nodes; |
|
| 325 | 326 |
|
| 326 | 327 |
public: |
| 327 | 328 |
|
| 328 | 329 |
/// \brief Constructor of the ArcSet. |
| 329 | 330 |
/// |
| 330 | 331 |
/// Constructor of the ArcSet. |
| 331 |
ListArcSet(const Graph& graph) : nodes(graph, *this) {
|
|
| 332 |
Parent::initalize(graph, nodes); |
|
| 332 |
ListArcSet(const GR& graph) : _nodes(graph, *this) {
|
|
| 333 |
Parent::initalize(graph, _nodes); |
|
| 333 | 334 |
} |
| 334 | 335 |
|
| 335 | 336 |
/// \brief Add a new arc to the digraph. |
| 336 | 337 |
/// |
| 337 | 338 |
/// Add a new arc to the digraph with source node \c s |
| 338 | 339 |
/// and target node \c t. |
| 339 |
/// \return |
|
| 340 |
/// \return The new arc. |
|
| 340 | 341 |
Arc addArc(const Node& s, const Node& t) {
|
| 341 | 342 |
return Parent::addArc(s, t); |
| 342 | 343 |
} |
| 343 | 344 |
|
| 344 | 345 |
/// \brief Erase an arc from the digraph. |
| 345 | 346 |
/// |
| 346 | 347 |
/// Erase an arc \c a from the digraph. |
| 347 | 348 |
void erase(const Arc& a) {
|
| 348 | 349 |
return Parent::erase(a); |
| 349 | 350 |
} |
| 350 | 351 |
|
| 351 | 352 |
}; |
| 352 | 353 |
|
| 353 |
template <typename |
|
| 354 |
template <typename GR> |
|
| 354 | 355 |
class ListEdgeSetBase {
|
| 355 | 356 |
public: |
| 356 | 357 |
|
| 357 |
typedef _Graph Graph; |
|
| 358 |
typedef typename Graph::Node Node; |
|
| 359 |
typedef typename |
|
| 358 |
typedef typename GR::Node Node; |
|
| 359 |
typedef typename GR::NodeIt NodeIt; |
|
| 360 | 360 |
|
| 361 | 361 |
protected: |
| 362 | 362 |
|
| 363 | 363 |
struct NodeT {
|
| 364 | 364 |
int first_out; |
| 365 | 365 |
NodeT() : first_out(-1) {}
|
| 366 | 366 |
}; |
| 367 | 367 |
|
| 368 |
typedef typename ItemSetTraits< |
|
| 368 |
typedef typename ItemSetTraits<GR, Node>:: |
|
| 369 | 369 |
template Map<NodeT>::Type NodesImplBase; |
| 370 | 370 |
|
| 371 |
NodesImplBase* |
|
| 371 |
NodesImplBase* _nodes; |
|
| 372 | 372 |
|
| 373 | 373 |
struct ArcT {
|
| 374 | 374 |
Node target; |
| 375 | 375 |
int prev_out, next_out; |
| 376 | 376 |
ArcT() : prev_out(-1), next_out(-1) {}
|
| 377 | 377 |
}; |
| 378 | 378 |
|
| 379 | 379 |
std::vector<ArcT> arcs; |
| 380 | 380 |
|
| 381 | 381 |
int first_arc; |
| 382 | 382 |
int first_free_arc; |
| 383 | 383 |
|
| 384 |
const |
|
| 384 |
const GR* _graph; |
|
| 385 | 385 |
|
| 386 |
void initalize(const Graph& _graph, NodesImplBase& _nodes) {
|
|
| 387 |
graph = &_graph; |
|
| 388 |
|
|
| 386 |
void initalize(const GR& graph, NodesImplBase& nodes) {
|
|
| 387 |
_graph = &graph; |
|
| 388 |
_nodes = &nodes; |
|
| 389 | 389 |
} |
| 390 | 390 |
|
| 391 | 391 |
public: |
| 392 | 392 |
|
| 393 | 393 |
class Edge {
|
| 394 | 394 |
friend class ListEdgeSetBase; |
| 395 | 395 |
protected: |
| 396 | 396 |
|
| 397 | 397 |
int id; |
| 398 | 398 |
explicit Edge(int _id) { id = _id;}
|
| 399 | 399 |
|
| 400 | 400 |
public: |
| 401 | 401 |
Edge() {}
|
| 402 | 402 |
Edge (Invalid) { id = -1; }
|
| 403 | 403 |
bool operator==(const Edge& arc) const {return id == arc.id;}
|
| 404 | 404 |
bool operator!=(const Edge& arc) const {return id != arc.id;}
|
| 405 | 405 |
bool operator<(const Edge& arc) const {return id < arc.id;}
|
| 406 | 406 |
}; |
| 407 | 407 |
|
| 408 | 408 |
class Arc {
|
| 409 | 409 |
friend class ListEdgeSetBase; |
| 410 | 410 |
protected: |
| 411 | 411 |
Arc(int _id) : id(_id) {}
|
| 412 | 412 |
int id; |
| 413 | 413 |
public: |
| 414 | 414 |
operator Edge() const { return edgeFromId(id / 2); }
|
| 415 | 415 |
|
| 416 | 416 |
Arc() {}
|
| 417 | 417 |
Arc(Invalid) : id(-1) {}
|
| 418 | 418 |
bool operator==(const Arc& arc) const { return id == arc.id; }
|
| 419 | 419 |
bool operator!=(const Arc& arc) const { return id != arc.id; }
|
| 420 | 420 |
bool operator<(const Arc& arc) const { return id < arc.id; }
|
| 421 | 421 |
}; |
| 422 | 422 |
|
| 423 | 423 |
ListEdgeSetBase() : first_arc(-1), first_free_arc(-1) {}
|
| 424 | 424 |
|
| 425 |
Node addNode() {
|
|
| 426 |
LEMON_ASSERT(false, |
|
| 427 |
"This graph structure does not support node insertion"); |
|
| 428 |
return INVALID; // avoid warning |
|
| 429 |
} |
|
| 430 |
|
|
| 425 | 431 |
Edge addEdge(const Node& u, const Node& v) {
|
| 426 | 432 |
int n; |
| 427 | 433 |
|
| 428 | 434 |
if (first_free_arc == -1) {
|
| 429 | 435 |
n = arcs.size(); |
| 430 | 436 |
arcs.push_back(ArcT()); |
| 431 | 437 |
arcs.push_back(ArcT()); |
| 432 | 438 |
} else {
|
| 433 | 439 |
n = first_free_arc; |
| 434 | 440 |
first_free_arc = arcs[n].next_out; |
| 435 | 441 |
} |
| 436 | 442 |
|
| 437 | 443 |
arcs[n].target = u; |
| 438 | 444 |
arcs[n | 1].target = v; |
| 439 | 445 |
|
| 440 |
arcs[n].next_out = (*nodes)[v].first_out; |
|
| 441 |
if ((*nodes)[v].first_out != -1) {
|
|
| 442 |
|
|
| 446 |
arcs[n].next_out = (*_nodes)[v].first_out; |
|
| 447 |
if ((*_nodes)[v].first_out != -1) {
|
|
| 448 |
arcs[(*_nodes)[v].first_out].prev_out = n; |
|
| 443 | 449 |
} |
| 444 |
(* |
|
| 450 |
(*_nodes)[v].first_out = n; |
|
| 445 | 451 |
arcs[n].prev_out = -1; |
| 446 | 452 |
|
| 447 |
if ((*nodes)[u].first_out != -1) {
|
|
| 448 |
arcs[(*nodes)[u].first_out].prev_out = (n | 1); |
|
| 453 |
if ((*_nodes)[u].first_out != -1) {
|
|
| 454 |
arcs[(*_nodes)[u].first_out].prev_out = (n | 1); |
|
| 449 | 455 |
} |
| 450 |
arcs[n | 1].next_out = (*nodes)[u].first_out; |
|
| 451 |
(*nodes)[u].first_out = (n | 1); |
|
| 456 |
arcs[n | 1].next_out = (*_nodes)[u].first_out; |
|
| 457 |
(*_nodes)[u].first_out = (n | 1); |
|
| 452 | 458 |
arcs[n | 1].prev_out = -1; |
| 453 | 459 |
|
| 454 | 460 |
return Edge(n / 2); |
| 455 | 461 |
} |
| 456 | 462 |
|
| 457 | 463 |
void erase(const Edge& arc) {
|
| 458 | 464 |
int n = arc.id * 2; |
| 459 | 465 |
|
| 460 | 466 |
if (arcs[n].next_out != -1) {
|
| 461 | 467 |
arcs[arcs[n].next_out].prev_out = arcs[n].prev_out; |
| 462 | 468 |
} |
| 463 | 469 |
|
| 464 | 470 |
if (arcs[n].prev_out != -1) {
|
| 465 | 471 |
arcs[arcs[n].prev_out].next_out = arcs[n].next_out; |
| 466 | 472 |
} else {
|
| 467 |
(* |
|
| 473 |
(*_nodes)[arcs[n | 1].target].first_out = arcs[n].next_out; |
|
| 468 | 474 |
} |
| 469 | 475 |
|
| 470 | 476 |
if (arcs[n | 1].next_out != -1) {
|
| 471 | 477 |
arcs[arcs[n | 1].next_out].prev_out = arcs[n | 1].prev_out; |
| 472 | 478 |
} |
| 473 | 479 |
|
| 474 | 480 |
if (arcs[n | 1].prev_out != -1) {
|
| 475 | 481 |
arcs[arcs[n | 1].prev_out].next_out = arcs[n | 1].next_out; |
| 476 | 482 |
} else {
|
| 477 |
(* |
|
| 483 |
(*_nodes)[arcs[n].target].first_out = arcs[n | 1].next_out; |
|
| 478 | 484 |
} |
| 479 | 485 |
|
| 480 | 486 |
arcs[n].next_out = first_free_arc; |
| 481 | 487 |
first_free_arc = n; |
| 482 | 488 |
|
| 483 | 489 |
} |
| 484 | 490 |
|
| 485 | 491 |
void clear() {
|
| 486 | 492 |
Node node; |
| 487 | 493 |
for (first(node); node != INVALID; next(node)) {
|
| 488 |
(* |
|
| 494 |
(*_nodes)[node].first_out = -1; |
|
| 489 | 495 |
} |
| 490 | 496 |
arcs.clear(); |
| 491 | 497 |
first_arc = -1; |
| 492 | 498 |
first_free_arc = -1; |
| 493 | 499 |
} |
| 494 | 500 |
|
| 495 | 501 |
void first(Node& node) const {
|
| 496 |
|
|
| 502 |
_graph->first(node); |
|
| 497 | 503 |
} |
| 498 | 504 |
|
| 499 | 505 |
void next(Node& node) const {
|
| 500 |
|
|
| 506 |
_graph->next(node); |
|
| 501 | 507 |
} |
| 502 | 508 |
|
| 503 | 509 |
void first(Arc& arc) const {
|
| 504 | 510 |
Node node; |
| 505 | 511 |
first(node); |
| 506 |
while (node != INVALID && (* |
|
| 512 |
while (node != INVALID && (*_nodes)[node].first_out == -1) {
|
|
| 507 | 513 |
next(node); |
| 508 | 514 |
} |
| 509 |
arc.id = (node == INVALID) ? -1 : (* |
|
| 515 |
arc.id = (node == INVALID) ? -1 : (*_nodes)[node].first_out; |
|
| 510 | 516 |
} |
| 511 | 517 |
|
| 512 | 518 |
void next(Arc& arc) const {
|
| 513 | 519 |
if (arcs[arc.id].next_out != -1) {
|
| 514 | 520 |
arc.id = arcs[arc.id].next_out; |
| 515 | 521 |
} else {
|
| 516 | 522 |
Node node = arcs[arc.id ^ 1].target; |
| 517 | 523 |
next(node); |
| 518 |
while(node != INVALID && (* |
|
| 524 |
while(node != INVALID && (*_nodes)[node].first_out == -1) {
|
|
| 519 | 525 |
next(node); |
| 520 | 526 |
} |
| 521 |
arc.id = (node == INVALID) ? -1 : (* |
|
| 527 |
arc.id = (node == INVALID) ? -1 : (*_nodes)[node].first_out; |
|
| 522 | 528 |
} |
| 523 | 529 |
} |
| 524 | 530 |
|
| 525 | 531 |
void first(Edge& edge) const {
|
| 526 | 532 |
Node node; |
| 527 | 533 |
first(node); |
| 528 | 534 |
while (node != INVALID) {
|
| 529 |
edge.id = (* |
|
| 535 |
edge.id = (*_nodes)[node].first_out; |
|
| 530 | 536 |
while ((edge.id & 1) != 1) {
|
| 531 | 537 |
edge.id = arcs[edge.id].next_out; |
| 532 | 538 |
} |
| 533 | 539 |
if (edge.id != -1) {
|
| 534 | 540 |
edge.id /= 2; |
| 535 | 541 |
return; |
| 536 | 542 |
} |
| 537 | 543 |
next(node); |
| 538 | 544 |
} |
| 539 | 545 |
edge.id = -1; |
| 540 | 546 |
} |
| 541 | 547 |
|
| 542 | 548 |
void next(Edge& edge) const {
|
| 543 | 549 |
Node node = arcs[edge.id * 2].target; |
| 544 | 550 |
edge.id = arcs[(edge.id * 2) | 1].next_out; |
| 545 | 551 |
while ((edge.id & 1) != 1) {
|
| 546 | 552 |
edge.id = arcs[edge.id].next_out; |
| 547 | 553 |
} |
| 548 | 554 |
if (edge.id != -1) {
|
| 549 | 555 |
edge.id /= 2; |
| 550 | 556 |
return; |
| 551 | 557 |
} |
| 552 | 558 |
next(node); |
| 553 | 559 |
while (node != INVALID) {
|
| 554 |
edge.id = (* |
|
| 560 |
edge.id = (*_nodes)[node].first_out; |
|
| 555 | 561 |
while ((edge.id & 1) != 1) {
|
| 556 | 562 |
edge.id = arcs[edge.id].next_out; |
| 557 | 563 |
} |
| 558 | 564 |
if (edge.id != -1) {
|
| 559 | 565 |
edge.id /= 2; |
| 560 | 566 |
return; |
| 561 | 567 |
} |
| 562 | 568 |
next(node); |
| 563 | 569 |
} |
| 564 | 570 |
edge.id = -1; |
| 565 | 571 |
} |
| 566 | 572 |
|
| 567 | 573 |
void firstOut(Arc& arc, const Node& node) const {
|
| 568 |
arc.id = (* |
|
| 574 |
arc.id = (*_nodes)[node].first_out; |
|
| 569 | 575 |
} |
| 570 | 576 |
|
| 571 | 577 |
void nextOut(Arc& arc) const {
|
| 572 | 578 |
arc.id = arcs[arc.id].next_out; |
| 573 | 579 |
} |
| 574 | 580 |
|
| 575 | 581 |
void firstIn(Arc& arc, const Node& node) const {
|
| 576 |
arc.id = (((* |
|
| 582 |
arc.id = (((*_nodes)[node].first_out) ^ 1); |
|
| 577 | 583 |
if (arc.id == -2) arc.id = -1; |
| 578 | 584 |
} |
| 579 | 585 |
|
| 580 | 586 |
void nextIn(Arc& arc) const {
|
| 581 | 587 |
arc.id = ((arcs[arc.id ^ 1].next_out) ^ 1); |
| 582 | 588 |
if (arc.id == -2) arc.id = -1; |
| 583 | 589 |
} |
| 584 | 590 |
|
| 585 | 591 |
void firstInc(Edge &arc, bool& dir, const Node& node) const {
|
| 586 |
int de = (* |
|
| 592 |
int de = (*_nodes)[node].first_out; |
|
| 587 | 593 |
if (de != -1 ) {
|
| 588 | 594 |
arc.id = de / 2; |
| 589 | 595 |
dir = ((de & 1) == 1); |
| 590 | 596 |
} else {
|
| 591 | 597 |
arc.id = -1; |
| 592 | 598 |
dir = true; |
| 593 | 599 |
} |
| 594 | 600 |
} |
| 595 | 601 |
void nextInc(Edge &arc, bool& dir) const {
|
| 596 | 602 |
int de = (arcs[(arc.id * 2) | (dir ? 1 : 0)].next_out); |
| 597 | 603 |
if (de != -1 ) {
|
| 598 | 604 |
arc.id = de / 2; |
| 599 | 605 |
dir = ((de & 1) == 1); |
| 600 | 606 |
} else {
|
| 601 | 607 |
arc.id = -1; |
| 602 | 608 |
dir = true; |
| 603 | 609 |
} |
| 604 | 610 |
} |
| 605 | 611 |
|
| 606 | 612 |
static bool direction(Arc arc) {
|
| 607 | 613 |
return (arc.id & 1) == 1; |
| 608 | 614 |
} |
| 609 | 615 |
|
| 610 | 616 |
static Arc direct(Edge edge, bool dir) {
|
| 611 | 617 |
return Arc(edge.id * 2 + (dir ? 1 : 0)); |
| 612 | 618 |
} |
| 613 | 619 |
|
| 614 |
int id(const Node& node) const { return
|
|
| 620 |
int id(const Node& node) const { return _graph->id(node); }
|
|
| 615 | 621 |
static int id(Arc e) { return e.id; }
|
| 616 | 622 |
static int id(Edge e) { return e.id; }
|
| 617 | 623 |
|
| 618 |
Node nodeFromId(int id) const { return
|
|
| 624 |
Node nodeFromId(int id) const { return _graph->nodeFromId(id); }
|
|
| 619 | 625 |
static Arc arcFromId(int id) { return Arc(id);}
|
| 620 | 626 |
static Edge edgeFromId(int id) { return Edge(id);}
|
| 621 | 627 |
|
| 622 |
int maxNodeId() const { return
|
|
| 628 |
int maxNodeId() const { return _graph->maxNodeId(); };
|
|
| 623 | 629 |
int maxEdgeId() const { return arcs.size() / 2 - 1; }
|
| 624 | 630 |
int maxArcId() const { return arcs.size()-1; }
|
| 625 | 631 |
|
| 626 | 632 |
Node source(Arc e) const { return arcs[e.id ^ 1].target; }
|
| 627 | 633 |
Node target(Arc e) const { return arcs[e.id].target; }
|
| 628 | 634 |
|
| 629 | 635 |
Node u(Edge e) const { return arcs[2 * e.id].target; }
|
| 630 | 636 |
Node v(Edge e) const { return arcs[2 * e.id + 1].target; }
|
| 631 | 637 |
|
| 632 |
typedef typename ItemSetTraits< |
|
| 638 |
typedef typename ItemSetTraits<GR, Node>::ItemNotifier NodeNotifier; |
|
| 633 | 639 |
|
| 634 | 640 |
NodeNotifier& notifier(Node) const {
|
| 635 |
return |
|
| 641 |
return _graph->notifier(Node()); |
|
| 636 | 642 |
} |
| 637 | 643 |
|
| 638 |
template <typename _Value> |
|
| 639 |
class NodeMap : public Graph::template NodeMap<_Value> {
|
|
| 644 |
template <typename V> |
|
| 645 |
class NodeMap : public GR::template NodeMap<V> {
|
|
| 646 |
typedef typename GR::template NodeMap<V> Parent; |
|
| 647 |
|
|
| 640 | 648 |
public: |
| 641 | 649 |
|
| 642 |
|
|
| 650 |
explicit NodeMap(const ListEdgeSetBase<GR>& arcset) |
|
| 651 |
: Parent(*arcset._graph) {}
|
|
| 643 | 652 |
|
| 644 |
explicit NodeMap(const ListEdgeSetBase<Graph>& arcset) |
|
| 645 |
: Parent(*arcset.graph) {}
|
|
| 646 |
|
|
| 647 |
NodeMap(const ListEdgeSetBase<Graph>& arcset, const _Value& value) |
|
| 648 |
|
|
| 653 |
NodeMap(const ListEdgeSetBase<GR>& arcset, const V& value) |
|
| 654 |
: Parent(*arcset._graph, value) {}
|
|
| 649 | 655 |
|
| 650 | 656 |
NodeMap& operator=(const NodeMap& cmap) {
|
| 651 | 657 |
return operator=<NodeMap>(cmap); |
| 652 | 658 |
} |
| 653 | 659 |
|
| 654 | 660 |
template <typename CMap> |
| 655 | 661 |
NodeMap& operator=(const CMap& cmap) {
|
| 656 | 662 |
Parent::operator=(cmap); |
| 657 | 663 |
return *this; |
| 658 | 664 |
} |
| 659 | 665 |
}; |
| 660 | 666 |
|
| 661 | 667 |
}; |
| 662 | 668 |
|
| 663 |
/// \ingroup |
|
| 669 |
/// \ingroup graphs |
|
| 664 | 670 |
/// |
| 665 | 671 |
/// \brief Graph using a node set of another digraph or graph and an |
| 666 | 672 |
/// own edge set. |
| 667 | 673 |
/// |
| 668 | 674 |
/// This structure can be used to establish another graph over a |
| 669 | 675 |
/// node set of an existing one. This class uses the same Node type |
| 670 | 676 |
/// as the underlying graph, and each valid node of the original |
| 671 | 677 |
/// graph is valid in this arc set, therefore the node objects of |
| 672 | 678 |
/// the original graph can be used directly with this class. The |
| 673 | 679 |
/// node handling functions (id handling, observing, and iterators) |
| 674 | 680 |
/// works equivalently as in the original graph. |
| 675 | 681 |
/// |
| 676 | 682 |
/// This implementation is based on doubly-linked lists, from each |
| 677 | 683 |
/// node the incident edges make up lists, therefore one edge can be |
| 678 | 684 |
/// erased in constant time. It also makes possible, that node can |
| 679 | 685 |
/// be removed from the underlying graph, in this case all edges |
| 680 | 686 |
/// incident to the given node is erased from the arc set. |
| 681 | 687 |
/// |
| 682 |
/// \param |
|
| 688 |
/// \param GR The type of the graph which shares its node set |
|
| 683 | 689 |
/// with this class. Its interface must conform to the |
| 684 | 690 |
/// \ref concepts::Digraph "Digraph" or \ref concepts::Graph "Graph" |
| 685 | 691 |
/// concept. |
| 686 | 692 |
/// |
| 687 |
/// This class |
|
| 693 |
/// This class fully conforms to the \ref concepts::Graph "Graph" |
|
| 688 | 694 |
/// concept. |
| 689 |
template <typename _Graph> |
|
| 690 |
class ListEdgeSet : public EdgeSetExtender<ListEdgeSetBase<_Graph> > {
|
|
| 695 |
template <typename GR> |
|
| 696 |
class ListEdgeSet : public EdgeSetExtender<ListEdgeSetBase<GR> > {
|
|
| 697 |
typedef EdgeSetExtender<ListEdgeSetBase<GR> > Parent; |
|
| 691 | 698 |
|
| 692 | 699 |
public: |
| 693 | 700 |
|
| 694 |
typedef EdgeSetExtender<ListEdgeSetBase<_Graph> > Parent; |
|
| 695 |
|
|
| 696 | 701 |
typedef typename Parent::Node Node; |
| 697 | 702 |
typedef typename Parent::Arc Arc; |
| 698 | 703 |
typedef typename Parent::Edge Edge; |
| 699 | 704 |
|
| 700 |
typedef _Graph Graph; |
|
| 701 |
|
|
| 702 |
|
|
| 703 | 705 |
typedef typename Parent::NodesImplBase NodesImplBase; |
| 704 | 706 |
|
| 705 | 707 |
void eraseNode(const Node& node) {
|
| 706 | 708 |
Arc arc; |
| 707 | 709 |
Parent::firstOut(arc, node); |
| 708 | 710 |
while (arc != INVALID ) {
|
| 709 | 711 |
erase(arc); |
| 710 | 712 |
Parent::firstOut(arc, node); |
| 711 | 713 |
} |
| 712 | 714 |
|
| 713 | 715 |
} |
| 714 | 716 |
|
| 715 | 717 |
void clearNodes() {
|
| 716 | 718 |
Parent::clear(); |
| 717 | 719 |
} |
| 718 | 720 |
|
| 719 | 721 |
class NodesImpl : public NodesImplBase {
|
| 720 |
public: |
|
| 721 | 722 |
typedef NodesImplBase Parent; |
| 722 | 723 |
|
| 723 |
|
|
| 724 |
public: |
|
| 725 |
NodesImpl(const GR& graph, ListEdgeSet& arcset) |
|
| 724 | 726 |
: Parent(graph), _arcset(arcset) {}
|
| 725 | 727 |
|
| 726 | 728 |
virtual ~NodesImpl() {}
|
| 727 | 729 |
|
| 728 | 730 |
protected: |
| 729 | 731 |
|
| 730 | 732 |
virtual void erase(const Node& node) {
|
| 731 | 733 |
_arcset.eraseNode(node); |
| 732 | 734 |
Parent::erase(node); |
| 733 | 735 |
} |
| 734 | 736 |
virtual void erase(const std::vector<Node>& nodes) {
|
| 735 | 737 |
for (int i = 0; i < int(nodes.size()); ++i) {
|
| 736 | 738 |
_arcset.eraseNode(nodes[i]); |
| 737 | 739 |
} |
| 738 | 740 |
Parent::erase(nodes); |
| 739 | 741 |
} |
| 740 | 742 |
virtual void clear() {
|
| 741 | 743 |
_arcset.clearNodes(); |
| 742 | 744 |
Parent::clear(); |
| 743 | 745 |
} |
| 744 | 746 |
|
| 745 | 747 |
private: |
| 746 | 748 |
ListEdgeSet& _arcset; |
| 747 | 749 |
}; |
| 748 | 750 |
|
| 749 |
NodesImpl |
|
| 751 |
NodesImpl _nodes; |
|
| 750 | 752 |
|
| 751 | 753 |
public: |
| 752 | 754 |
|
| 753 | 755 |
/// \brief Constructor of the EdgeSet. |
| 754 | 756 |
/// |
| 755 | 757 |
/// Constructor of the EdgeSet. |
| 756 |
ListEdgeSet(const Graph& graph) : nodes(graph, *this) {
|
|
| 757 |
Parent::initalize(graph, nodes); |
|
| 758 |
ListEdgeSet(const GR& graph) : _nodes(graph, *this) {
|
|
| 759 |
Parent::initalize(graph, _nodes); |
|
| 758 | 760 |
} |
| 759 | 761 |
|
| 760 | 762 |
/// \brief Add a new edge to the graph. |
| 761 | 763 |
/// |
| 762 | 764 |
/// Add a new edge to the graph with node \c u |
| 763 | 765 |
/// and node \c v endpoints. |
| 764 |
/// \return |
|
| 766 |
/// \return The new edge. |
|
| 765 | 767 |
Edge addEdge(const Node& u, const Node& v) {
|
| 766 | 768 |
return Parent::addEdge(u, v); |
| 767 | 769 |
} |
| 768 | 770 |
|
| 769 | 771 |
/// \brief Erase an edge from the graph. |
| 770 | 772 |
/// |
| 771 | 773 |
/// Erase the edge \c e from the graph. |
| 772 | 774 |
void erase(const Edge& e) {
|
| 773 | 775 |
return Parent::erase(e); |
| 774 | 776 |
} |
| 775 | 777 |
|
| 776 | 778 |
}; |
| 777 | 779 |
|
| 778 |
template <typename |
|
| 780 |
template <typename GR> |
|
| 779 | 781 |
class SmartArcSetBase {
|
| 780 | 782 |
public: |
| 781 | 783 |
|
| 782 |
typedef _Graph Graph; |
|
| 783 |
typedef typename Graph::Node Node; |
|
| 784 |
typedef typename |
|
| 784 |
typedef typename GR::Node Node; |
|
| 785 |
typedef typename GR::NodeIt NodeIt; |
|
| 785 | 786 |
|
| 786 | 787 |
protected: |
| 787 | 788 |
|
| 788 | 789 |
struct NodeT {
|
| 789 | 790 |
int first_out, first_in; |
| 790 | 791 |
NodeT() : first_out(-1), first_in(-1) {}
|
| 791 | 792 |
}; |
| 792 | 793 |
|
| 793 |
typedef typename ItemSetTraits< |
|
| 794 |
typedef typename ItemSetTraits<GR, Node>:: |
|
| 794 | 795 |
template Map<NodeT>::Type NodesImplBase; |
| 795 | 796 |
|
| 796 |
NodesImplBase* |
|
| 797 |
NodesImplBase* _nodes; |
|
| 797 | 798 |
|
| 798 | 799 |
struct ArcT {
|
| 799 | 800 |
Node source, target; |
| 800 | 801 |
int next_out, next_in; |
| 801 | 802 |
ArcT() {}
|
| 802 | 803 |
}; |
| 803 | 804 |
|
| 804 | 805 |
std::vector<ArcT> arcs; |
| 805 | 806 |
|
| 806 |
const |
|
| 807 |
const GR* _graph; |
|
| 807 | 808 |
|
| 808 |
void initalize(const Graph& _graph, NodesImplBase& _nodes) {
|
|
| 809 |
graph = &_graph; |
|
| 810 |
|
|
| 809 |
void initalize(const GR& graph, NodesImplBase& nodes) {
|
|
| 810 |
_graph = &graph; |
|
| 811 |
_nodes = &nodes; |
|
| 811 | 812 |
} |
| 812 | 813 |
|
| 813 | 814 |
public: |
| 814 | 815 |
|
| 815 | 816 |
class Arc {
|
| 816 |
friend class SmartArcSetBase< |
|
| 817 |
friend class SmartArcSetBase<GR>; |
|
| 817 | 818 |
protected: |
| 818 | 819 |
Arc(int _id) : id(_id) {}
|
| 819 | 820 |
int id; |
| 820 | 821 |
public: |
| 821 | 822 |
Arc() {}
|
| 822 | 823 |
Arc(Invalid) : id(-1) {}
|
| 823 | 824 |
bool operator==(const Arc& arc) const { return id == arc.id; }
|
| 824 | 825 |
bool operator!=(const Arc& arc) const { return id != arc.id; }
|
| 825 | 826 |
bool operator<(const Arc& arc) const { return id < arc.id; }
|
| 826 | 827 |
}; |
| 827 | 828 |
|
| 828 | 829 |
SmartArcSetBase() {}
|
| 829 | 830 |
|
| 831 |
Node addNode() {
|
|
| 832 |
LEMON_ASSERT(false, |
|
| 833 |
"This graph structure does not support node insertion"); |
|
| 834 |
return INVALID; // avoid warning |
|
| 835 |
} |
|
| 836 |
|
|
| 830 | 837 |
Arc addArc(const Node& u, const Node& v) {
|
| 831 | 838 |
int n = arcs.size(); |
| 832 | 839 |
arcs.push_back(ArcT()); |
| 833 |
arcs[n].next_in = (*nodes)[v].first_in; |
|
| 834 |
(*nodes)[v].first_in = n; |
|
| 835 |
arcs[n].next_out = (*nodes)[u].first_out; |
|
| 836 |
(*nodes)[u].first_out = n; |
|
| 840 |
arcs[n].next_in = (*_nodes)[v].first_in; |
|
| 841 |
(*_nodes)[v].first_in = n; |
|
| 842 |
arcs[n].next_out = (*_nodes)[u].first_out; |
|
| 843 |
(*_nodes)[u].first_out = n; |
|
| 837 | 844 |
arcs[n].source = u; |
| 838 | 845 |
arcs[n].target = v; |
| 839 | 846 |
return Arc(n); |
| 840 | 847 |
} |
| 841 | 848 |
|
| 842 | 849 |
void clear() {
|
| 843 | 850 |
Node node; |
| 844 | 851 |
for (first(node); node != INVALID; next(node)) {
|
| 845 |
(*nodes)[node].first_in = -1; |
|
| 846 |
(*nodes)[node].first_out = -1; |
|
| 852 |
(*_nodes)[node].first_in = -1; |
|
| 853 |
(*_nodes)[node].first_out = -1; |
|
| 847 | 854 |
} |
| 848 | 855 |
arcs.clear(); |
| 849 | 856 |
} |
| 850 | 857 |
|
| 851 | 858 |
void first(Node& node) const {
|
| 852 |
|
|
| 859 |
_graph->first(node); |
|
| 853 | 860 |
} |
| 854 | 861 |
|
| 855 | 862 |
void next(Node& node) const {
|
| 856 |
|
|
| 863 |
_graph->next(node); |
|
| 857 | 864 |
} |
| 858 | 865 |
|
| 859 | 866 |
void first(Arc& arc) const {
|
| 860 | 867 |
arc.id = arcs.size() - 1; |
| 861 | 868 |
} |
| 862 | 869 |
|
| 863 |
void next(Arc& arc) |
|
| 870 |
static void next(Arc& arc) {
|
|
| 864 | 871 |
--arc.id; |
| 865 | 872 |
} |
| 866 | 873 |
|
| 867 | 874 |
void firstOut(Arc& arc, const Node& node) const {
|
| 868 |
arc.id = (* |
|
| 875 |
arc.id = (*_nodes)[node].first_out; |
|
| 869 | 876 |
} |
| 870 | 877 |
|
| 871 | 878 |
void nextOut(Arc& arc) const {
|
| 872 | 879 |
arc.id = arcs[arc.id].next_out; |
| 873 | 880 |
} |
| 874 | 881 |
|
| 875 | 882 |
void firstIn(Arc& arc, const Node& node) const {
|
| 876 |
arc.id = (* |
|
| 883 |
arc.id = (*_nodes)[node].first_in; |
|
| 877 | 884 |
} |
| 878 | 885 |
|
| 879 | 886 |
void nextIn(Arc& arc) const {
|
| 880 | 887 |
arc.id = arcs[arc.id].next_in; |
| 881 | 888 |
} |
| 882 | 889 |
|
| 883 |
int id(const Node& node) const { return
|
|
| 890 |
int id(const Node& node) const { return _graph->id(node); }
|
|
| 884 | 891 |
int id(const Arc& arc) const { return arc.id; }
|
| 885 | 892 |
|
| 886 |
Node nodeFromId(int ix) const { return
|
|
| 893 |
Node nodeFromId(int ix) const { return _graph->nodeFromId(ix); }
|
|
| 887 | 894 |
Arc arcFromId(int ix) const { return Arc(ix); }
|
| 888 | 895 |
|
| 889 |
int maxNodeId() const { return
|
|
| 896 |
int maxNodeId() const { return _graph->maxNodeId(); };
|
|
| 890 | 897 |
int maxArcId() const { return arcs.size() - 1; }
|
| 891 | 898 |
|
| 892 | 899 |
Node source(const Arc& arc) const { return arcs[arc.id].source;}
|
| 893 | 900 |
Node target(const Arc& arc) const { return arcs[arc.id].target;}
|
| 894 | 901 |
|
| 895 |
typedef typename ItemSetTraits< |
|
| 902 |
typedef typename ItemSetTraits<GR, Node>::ItemNotifier NodeNotifier; |
|
| 896 | 903 |
|
| 897 | 904 |
NodeNotifier& notifier(Node) const {
|
| 898 |
return |
|
| 905 |
return _graph->notifier(Node()); |
|
| 899 | 906 |
} |
| 900 | 907 |
|
| 901 |
template <typename _Value> |
|
| 902 |
class NodeMap : public Graph::template NodeMap<_Value> {
|
|
| 908 |
template <typename V> |
|
| 909 |
class NodeMap : public GR::template NodeMap<V> {
|
|
| 910 |
typedef typename GR::template NodeMap<V> Parent; |
|
| 911 |
|
|
| 903 | 912 |
public: |
| 904 | 913 |
|
| 905 |
|
|
| 914 |
explicit NodeMap(const SmartArcSetBase<GR>& arcset) |
|
| 915 |
: Parent(*arcset._graph) { }
|
|
| 906 | 916 |
|
| 907 |
explicit NodeMap(const SmartArcSetBase<Graph>& arcset) |
|
| 908 |
: Parent(*arcset.graph) { }
|
|
| 909 |
|
|
| 910 |
NodeMap(const SmartArcSetBase<Graph>& arcset, const _Value& value) |
|
| 911 |
|
|
| 917 |
NodeMap(const SmartArcSetBase<GR>& arcset, const V& value) |
|
| 918 |
: Parent(*arcset._graph, value) { }
|
|
| 912 | 919 |
|
| 913 | 920 |
NodeMap& operator=(const NodeMap& cmap) {
|
| 914 | 921 |
return operator=<NodeMap>(cmap); |
| 915 | 922 |
} |
| 916 | 923 |
|
| 917 | 924 |
template <typename CMap> |
| 918 | 925 |
NodeMap& operator=(const CMap& cmap) {
|
| 919 | 926 |
Parent::operator=(cmap); |
| 920 | 927 |
return *this; |
| 921 | 928 |
} |
| 922 | 929 |
}; |
| 923 | 930 |
|
| 924 | 931 |
}; |
| 925 | 932 |
|
| 926 | 933 |
|
| 927 |
/// \ingroup |
|
| 934 |
/// \ingroup graphs |
|
| 928 | 935 |
/// |
| 929 | 936 |
/// \brief Digraph using a node set of another digraph or graph and |
| 930 | 937 |
/// an own arc set. |
| 931 | 938 |
/// |
| 932 | 939 |
/// This structure can be used to establish another directed graph |
| 933 | 940 |
/// over a node set of an existing one. This class uses the same |
| 934 | 941 |
/// Node type as the underlying graph, and each valid node of the |
| 935 | 942 |
/// original graph is valid in this arc set, therefore the node |
| 936 | 943 |
/// objects of the original graph can be used directly with this |
| 937 | 944 |
/// class. The node handling functions (id handling, observing, and |
| 938 | 945 |
/// iterators) works equivalently as in the original graph. |
| 939 | 946 |
/// |
| 940 |
/// \param |
|
| 947 |
/// \param GR The type of the graph which shares its node set with |
|
| 941 | 948 |
/// this class. Its interface must conform to the |
| 942 | 949 |
/// \ref concepts::Digraph "Digraph" or \ref concepts::Graph "Graph" |
| 943 | 950 |
/// concept. |
| 944 | 951 |
/// |
| 945 | 952 |
/// This implementation is slightly faster than the \c ListArcSet, |
| 946 | 953 |
/// because it uses continuous storage for arcs and it uses just |
| 947 | 954 |
/// single-linked lists for enumerate outgoing and incoming |
| 948 | 955 |
/// arcs. Therefore the arcs cannot be erased from the arc sets. |
| 949 | 956 |
/// |
| 950 | 957 |
/// \warning If a node is erased from the underlying graph and this |
| 951 | 958 |
/// node is the source or target of one arc in the arc set, then |
| 952 | 959 |
/// the arc set is invalidated, and it cannot be used anymore. The |
| 953 | 960 |
/// validity can be checked with the \c valid() member function. |
| 954 | 961 |
/// |
| 955 |
/// This class |
|
| 962 |
/// This class fully conforms to the \ref concepts::Digraph |
|
| 956 | 963 |
/// "Digraph" concept. |
| 957 |
template <typename _Graph> |
|
| 958 |
class SmartArcSet : public ArcSetExtender<SmartArcSetBase<_Graph> > {
|
|
| 964 |
template <typename GR> |
|
| 965 |
class SmartArcSet : public ArcSetExtender<SmartArcSetBase<GR> > {
|
|
| 966 |
typedef ArcSetExtender<SmartArcSetBase<GR> > Parent; |
|
| 959 | 967 |
|
| 960 | 968 |
public: |
| 961 | 969 |
|
| 962 |
typedef ArcSetExtender<SmartArcSetBase<_Graph> > Parent; |
|
| 963 |
|
|
| 964 | 970 |
typedef typename Parent::Node Node; |
| 965 | 971 |
typedef typename Parent::Arc Arc; |
| 966 | 972 |
|
| 967 |
typedef _Graph Graph; |
|
| 968 |
|
|
| 969 | 973 |
protected: |
| 970 | 974 |
|
| 971 | 975 |
typedef typename Parent::NodesImplBase NodesImplBase; |
| 972 | 976 |
|
| 973 | 977 |
void eraseNode(const Node& node) {
|
| 974 | 978 |
if (typename Parent::InArcIt(*this, node) == INVALID && |
| 975 | 979 |
typename Parent::OutArcIt(*this, node) == INVALID) {
|
| 976 | 980 |
return; |
| 977 | 981 |
} |
| 978 | 982 |
throw typename NodesImplBase::Notifier::ImmediateDetach(); |
| 979 | 983 |
} |
| 980 | 984 |
|
| 981 | 985 |
void clearNodes() {
|
| 982 | 986 |
Parent::clear(); |
| 983 | 987 |
} |
| 984 | 988 |
|
| 985 | 989 |
class NodesImpl : public NodesImplBase {
|
| 986 |
public: |
|
| 987 | 990 |
typedef NodesImplBase Parent; |
| 988 | 991 |
|
| 989 |
|
|
| 992 |
public: |
|
| 993 |
NodesImpl(const GR& graph, SmartArcSet& arcset) |
|
| 990 | 994 |
: Parent(graph), _arcset(arcset) {}
|
| 991 | 995 |
|
| 992 | 996 |
virtual ~NodesImpl() {}
|
| 993 | 997 |
|
| 994 | 998 |
bool attached() const {
|
| 995 | 999 |
return Parent::attached(); |
| 996 | 1000 |
} |
| 997 | 1001 |
|
| 998 | 1002 |
protected: |
| 999 | 1003 |
|
| 1000 | 1004 |
virtual void erase(const Node& node) {
|
| 1001 | 1005 |
try {
|
| 1002 | 1006 |
_arcset.eraseNode(node); |
| 1003 | 1007 |
Parent::erase(node); |
| 1004 | 1008 |
} catch (const typename NodesImplBase::Notifier::ImmediateDetach&) {
|
| 1005 | 1009 |
Parent::clear(); |
| 1006 | 1010 |
throw; |
| 1007 | 1011 |
} |
| 1008 | 1012 |
} |
| 1009 | 1013 |
virtual void erase(const std::vector<Node>& nodes) {
|
| 1010 | 1014 |
try {
|
| 1011 | 1015 |
for (int i = 0; i < int(nodes.size()); ++i) {
|
| 1012 | 1016 |
_arcset.eraseNode(nodes[i]); |
| 1013 | 1017 |
} |
| 1014 | 1018 |
Parent::erase(nodes); |
| 1015 | 1019 |
} catch (const typename NodesImplBase::Notifier::ImmediateDetach&) {
|
| 1016 | 1020 |
Parent::clear(); |
| 1017 | 1021 |
throw; |
| 1018 | 1022 |
} |
| 1019 | 1023 |
} |
| 1020 | 1024 |
virtual void clear() {
|
| 1021 | 1025 |
_arcset.clearNodes(); |
| 1022 | 1026 |
Parent::clear(); |
| 1023 | 1027 |
} |
| 1024 | 1028 |
|
| 1025 | 1029 |
private: |
| 1026 | 1030 |
SmartArcSet& _arcset; |
| 1027 | 1031 |
}; |
| 1028 | 1032 |
|
| 1029 |
NodesImpl |
|
| 1033 |
NodesImpl _nodes; |
|
| 1030 | 1034 |
|
| 1031 | 1035 |
public: |
| 1032 | 1036 |
|
| 1033 | 1037 |
/// \brief Constructor of the ArcSet. |
| 1034 | 1038 |
/// |
| 1035 | 1039 |
/// Constructor of the ArcSet. |
| 1036 |
SmartArcSet(const Graph& graph) : nodes(graph, *this) {
|
|
| 1037 |
Parent::initalize(graph, nodes); |
|
| 1040 |
SmartArcSet(const GR& graph) : _nodes(graph, *this) {
|
|
| 1041 |
Parent::initalize(graph, _nodes); |
|
| 1038 | 1042 |
} |
| 1039 | 1043 |
|
| 1040 | 1044 |
/// \brief Add a new arc to the digraph. |
| 1041 | 1045 |
/// |
| 1042 | 1046 |
/// Add a new arc to the digraph with source node \c s |
| 1043 | 1047 |
/// and target node \c t. |
| 1044 |
/// \return |
|
| 1048 |
/// \return The new arc. |
|
| 1045 | 1049 |
Arc addArc(const Node& s, const Node& t) {
|
| 1046 | 1050 |
return Parent::addArc(s, t); |
| 1047 | 1051 |
} |
| 1048 | 1052 |
|
| 1049 | 1053 |
/// \brief Validity check |
| 1050 | 1054 |
/// |
| 1051 | 1055 |
/// This functions gives back false if the ArcSet is |
| 1052 | 1056 |
/// invalidated. It occurs when a node in the underlying graph is |
| 1053 | 1057 |
/// erased and it is not isolated in the ArcSet. |
| 1054 | 1058 |
bool valid() const {
|
| 1055 |
return |
|
| 1059 |
return _nodes.attached(); |
|
| 1056 | 1060 |
} |
| 1057 | 1061 |
|
| 1058 | 1062 |
}; |
| 1059 | 1063 |
|
| 1060 | 1064 |
|
| 1061 |
template <typename |
|
| 1065 |
template <typename GR> |
|
| 1062 | 1066 |
class SmartEdgeSetBase {
|
| 1063 | 1067 |
public: |
| 1064 | 1068 |
|
| 1065 |
typedef _Graph Graph; |
|
| 1066 |
typedef typename Graph::Node Node; |
|
| 1067 |
typedef typename |
|
| 1069 |
typedef typename GR::Node Node; |
|
| 1070 |
typedef typename GR::NodeIt NodeIt; |
|
| 1068 | 1071 |
|
| 1069 | 1072 |
protected: |
| 1070 | 1073 |
|
| 1071 | 1074 |
struct NodeT {
|
| 1072 | 1075 |
int first_out; |
| 1073 | 1076 |
NodeT() : first_out(-1) {}
|
| 1074 | 1077 |
}; |
| 1075 | 1078 |
|
| 1076 |
typedef typename ItemSetTraits< |
|
| 1079 |
typedef typename ItemSetTraits<GR, Node>:: |
|
| 1077 | 1080 |
template Map<NodeT>::Type NodesImplBase; |
| 1078 | 1081 |
|
| 1079 |
NodesImplBase* |
|
| 1082 |
NodesImplBase* _nodes; |
|
| 1080 | 1083 |
|
| 1081 | 1084 |
struct ArcT {
|
| 1082 | 1085 |
Node target; |
| 1083 | 1086 |
int next_out; |
| 1084 | 1087 |
ArcT() {}
|
| 1085 | 1088 |
}; |
| 1086 | 1089 |
|
| 1087 | 1090 |
std::vector<ArcT> arcs; |
| 1088 | 1091 |
|
| 1089 |
const |
|
| 1092 |
const GR* _graph; |
|
| 1090 | 1093 |
|
| 1091 |
void initalize(const Graph& _graph, NodesImplBase& _nodes) {
|
|
| 1092 |
graph = &_graph; |
|
| 1093 |
|
|
| 1094 |
void initalize(const GR& graph, NodesImplBase& nodes) {
|
|
| 1095 |
_graph = &graph; |
|
| 1096 |
_nodes = &nodes; |
|
| 1094 | 1097 |
} |
| 1095 | 1098 |
|
| 1096 | 1099 |
public: |
| 1097 | 1100 |
|
| 1098 | 1101 |
class Edge {
|
| 1099 | 1102 |
friend class SmartEdgeSetBase; |
| 1100 | 1103 |
protected: |
| 1101 | 1104 |
|
| 1102 | 1105 |
int id; |
| 1103 | 1106 |
explicit Edge(int _id) { id = _id;}
|
| 1104 | 1107 |
|
| 1105 | 1108 |
public: |
| 1106 | 1109 |
Edge() {}
|
| 1107 | 1110 |
Edge (Invalid) { id = -1; }
|
| 1108 | 1111 |
bool operator==(const Edge& arc) const {return id == arc.id;}
|
| 1109 | 1112 |
bool operator!=(const Edge& arc) const {return id != arc.id;}
|
| 1110 | 1113 |
bool operator<(const Edge& arc) const {return id < arc.id;}
|
| 1111 | 1114 |
}; |
| 1112 | 1115 |
|
| 1113 | 1116 |
class Arc {
|
| 1114 | 1117 |
friend class SmartEdgeSetBase; |
| 1115 | 1118 |
protected: |
| 1116 | 1119 |
Arc(int _id) : id(_id) {}
|
| 1117 | 1120 |
int id; |
| 1118 | 1121 |
public: |
| 1119 | 1122 |
operator Edge() const { return edgeFromId(id / 2); }
|
| 1120 | 1123 |
|
| 1121 | 1124 |
Arc() {}
|
| 1122 | 1125 |
Arc(Invalid) : id(-1) {}
|
| 1123 | 1126 |
bool operator==(const Arc& arc) const { return id == arc.id; }
|
| 1124 | 1127 |
bool operator!=(const Arc& arc) const { return id != arc.id; }
|
| 1125 | 1128 |
bool operator<(const Arc& arc) const { return id < arc.id; }
|
| 1126 | 1129 |
}; |
| 1127 | 1130 |
|
| 1128 | 1131 |
SmartEdgeSetBase() {}
|
| 1129 | 1132 |
|
| 1133 |
Node addNode() {
|
|
| 1134 |
LEMON_ASSERT(false, |
|
| 1135 |
"This graph structure does not support node insertion"); |
|
| 1136 |
return INVALID; // avoid warning |
|
| 1137 |
} |
|
| 1138 |
|
|
| 1130 | 1139 |
Edge addEdge(const Node& u, const Node& v) {
|
| 1131 | 1140 |
int n = arcs.size(); |
| 1132 | 1141 |
arcs.push_back(ArcT()); |
| 1133 | 1142 |
arcs.push_back(ArcT()); |
| 1134 | 1143 |
|
| 1135 | 1144 |
arcs[n].target = u; |
| 1136 | 1145 |
arcs[n | 1].target = v; |
| 1137 | 1146 |
|
| 1138 |
arcs[n].next_out = (*nodes)[v].first_out; |
|
| 1139 |
(*nodes)[v].first_out = n; |
|
| 1147 |
arcs[n].next_out = (*_nodes)[v].first_out; |
|
| 1148 |
(*_nodes)[v].first_out = n; |
|
| 1140 | 1149 |
|
| 1141 |
arcs[n | 1].next_out = (*nodes)[u].first_out; |
|
| 1142 |
(*nodes)[u].first_out = (n | 1); |
|
| 1150 |
arcs[n | 1].next_out = (*_nodes)[u].first_out; |
|
| 1151 |
(*_nodes)[u].first_out = (n | 1); |
|
| 1143 | 1152 |
|
| 1144 | 1153 |
return Edge(n / 2); |
| 1145 | 1154 |
} |
| 1146 | 1155 |
|
| 1147 | 1156 |
void clear() {
|
| 1148 | 1157 |
Node node; |
| 1149 | 1158 |
for (first(node); node != INVALID; next(node)) {
|
| 1150 |
(* |
|
| 1159 |
(*_nodes)[node].first_out = -1; |
|
| 1151 | 1160 |
} |
| 1152 | 1161 |
arcs.clear(); |
| 1153 | 1162 |
} |
| 1154 | 1163 |
|
| 1155 | 1164 |
void first(Node& node) const {
|
| 1156 |
|
|
| 1165 |
_graph->first(node); |
|
| 1157 | 1166 |
} |
| 1158 | 1167 |
|
| 1159 | 1168 |
void next(Node& node) const {
|
| 1160 |
|
|
| 1169 |
_graph->next(node); |
|
| 1161 | 1170 |
} |
| 1162 | 1171 |
|
| 1163 | 1172 |
void first(Arc& arc) const {
|
| 1164 | 1173 |
arc.id = arcs.size() - 1; |
| 1165 | 1174 |
} |
| 1166 | 1175 |
|
| 1167 |
void next(Arc& arc) |
|
| 1176 |
static void next(Arc& arc) {
|
|
| 1168 | 1177 |
--arc.id; |
| 1169 | 1178 |
} |
| 1170 | 1179 |
|
| 1171 | 1180 |
void first(Edge& arc) const {
|
| 1172 | 1181 |
arc.id = arcs.size() / 2 - 1; |
| 1173 | 1182 |
} |
| 1174 | 1183 |
|
| 1175 |
void next(Edge& arc) |
|
| 1184 |
static void next(Edge& arc) {
|
|
| 1176 | 1185 |
--arc.id; |
| 1177 | 1186 |
} |
| 1178 | 1187 |
|
| 1179 | 1188 |
void firstOut(Arc& arc, const Node& node) const {
|
| 1180 |
arc.id = (* |
|
| 1189 |
arc.id = (*_nodes)[node].first_out; |
|
| 1181 | 1190 |
} |
| 1182 | 1191 |
|
| 1183 | 1192 |
void nextOut(Arc& arc) const {
|
| 1184 | 1193 |
arc.id = arcs[arc.id].next_out; |
| 1185 | 1194 |
} |
| 1186 | 1195 |
|
| 1187 | 1196 |
void firstIn(Arc& arc, const Node& node) const {
|
| 1188 |
arc.id = (((* |
|
| 1197 |
arc.id = (((*_nodes)[node].first_out) ^ 1); |
|
| 1189 | 1198 |
if (arc.id == -2) arc.id = -1; |
| 1190 | 1199 |
} |
| 1191 | 1200 |
|
| 1192 | 1201 |
void nextIn(Arc& arc) const {
|
| 1193 | 1202 |
arc.id = ((arcs[arc.id ^ 1].next_out) ^ 1); |
| 1194 | 1203 |
if (arc.id == -2) arc.id = -1; |
| 1195 | 1204 |
} |
| 1196 | 1205 |
|
| 1197 | 1206 |
void firstInc(Edge &arc, bool& dir, const Node& node) const {
|
| 1198 |
int de = (* |
|
| 1207 |
int de = (*_nodes)[node].first_out; |
|
| 1199 | 1208 |
if (de != -1 ) {
|
| 1200 | 1209 |
arc.id = de / 2; |
| 1201 | 1210 |
dir = ((de & 1) == 1); |
| 1202 | 1211 |
} else {
|
| 1203 | 1212 |
arc.id = -1; |
| 1204 | 1213 |
dir = true; |
| 1205 | 1214 |
} |
| 1206 | 1215 |
} |
| 1207 | 1216 |
void nextInc(Edge &arc, bool& dir) const {
|
| 1208 | 1217 |
int de = (arcs[(arc.id * 2) | (dir ? 1 : 0)].next_out); |
| 1209 | 1218 |
if (de != -1 ) {
|
| 1210 | 1219 |
arc.id = de / 2; |
| 1211 | 1220 |
dir = ((de & 1) == 1); |
| 1212 | 1221 |
} else {
|
| 1213 | 1222 |
arc.id = -1; |
| 1214 | 1223 |
dir = true; |
| 1215 | 1224 |
} |
| 1216 | 1225 |
} |
| 1217 | 1226 |
|
| 1218 | 1227 |
static bool direction(Arc arc) {
|
| 1219 | 1228 |
return (arc.id & 1) == 1; |
| 1220 | 1229 |
} |
| 1221 | 1230 |
|
| 1222 | 1231 |
static Arc direct(Edge edge, bool dir) {
|
| 1223 | 1232 |
return Arc(edge.id * 2 + (dir ? 1 : 0)); |
| 1224 | 1233 |
} |
| 1225 | 1234 |
|
| 1226 |
int id(Node node) const { return
|
|
| 1235 |
int id(Node node) const { return _graph->id(node); }
|
|
| 1227 | 1236 |
static int id(Arc arc) { return arc.id; }
|
| 1228 | 1237 |
static int id(Edge arc) { return arc.id; }
|
| 1229 | 1238 |
|
| 1230 |
Node nodeFromId(int id) const { return
|
|
| 1239 |
Node nodeFromId(int id) const { return _graph->nodeFromId(id); }
|
|
| 1231 | 1240 |
static Arc arcFromId(int id) { return Arc(id); }
|
| 1232 | 1241 |
static Edge edgeFromId(int id) { return Edge(id);}
|
| 1233 | 1242 |
|
| 1234 |
int maxNodeId() const { return
|
|
| 1243 |
int maxNodeId() const { return _graph->maxNodeId(); };
|
|
| 1235 | 1244 |
int maxArcId() const { return arcs.size() - 1; }
|
| 1236 | 1245 |
int maxEdgeId() const { return arcs.size() / 2 - 1; }
|
| 1237 | 1246 |
|
| 1238 | 1247 |
Node source(Arc e) const { return arcs[e.id ^ 1].target; }
|
| 1239 | 1248 |
Node target(Arc e) const { return arcs[e.id].target; }
|
| 1240 | 1249 |
|
| 1241 | 1250 |
Node u(Edge e) const { return arcs[2 * e.id].target; }
|
| 1242 | 1251 |
Node v(Edge e) const { return arcs[2 * e.id + 1].target; }
|
| 1243 | 1252 |
|
| 1244 |
typedef typename ItemSetTraits< |
|
| 1253 |
typedef typename ItemSetTraits<GR, Node>::ItemNotifier NodeNotifier; |
|
| 1245 | 1254 |
|
| 1246 | 1255 |
NodeNotifier& notifier(Node) const {
|
| 1247 |
return |
|
| 1256 |
return _graph->notifier(Node()); |
|
| 1248 | 1257 |
} |
| 1249 | 1258 |
|
| 1250 |
template <typename _Value> |
|
| 1251 |
class NodeMap : public Graph::template NodeMap<_Value> {
|
|
| 1259 |
template <typename V> |
|
| 1260 |
class NodeMap : public GR::template NodeMap<V> {
|
|
| 1261 |
typedef typename GR::template NodeMap<V> Parent; |
|
| 1262 |
|
|
| 1252 | 1263 |
public: |
| 1253 | 1264 |
|
| 1254 |
|
|
| 1265 |
explicit NodeMap(const SmartEdgeSetBase<GR>& arcset) |
|
| 1266 |
: Parent(*arcset._graph) { }
|
|
| 1255 | 1267 |
|
| 1256 |
explicit NodeMap(const SmartEdgeSetBase<Graph>& arcset) |
|
| 1257 |
: Parent(*arcset.graph) { }
|
|
| 1258 |
|
|
| 1259 |
NodeMap(const SmartEdgeSetBase<Graph>& arcset, const _Value& value) |
|
| 1260 |
|
|
| 1268 |
NodeMap(const SmartEdgeSetBase<GR>& arcset, const V& value) |
|
| 1269 |
: Parent(*arcset._graph, value) { }
|
|
| 1261 | 1270 |
|
| 1262 | 1271 |
NodeMap& operator=(const NodeMap& cmap) {
|
| 1263 | 1272 |
return operator=<NodeMap>(cmap); |
| 1264 | 1273 |
} |
| 1265 | 1274 |
|
| 1266 | 1275 |
template <typename CMap> |
| 1267 | 1276 |
NodeMap& operator=(const CMap& cmap) {
|
| 1268 | 1277 |
Parent::operator=(cmap); |
| 1269 | 1278 |
return *this; |
| 1270 | 1279 |
} |
| 1271 | 1280 |
}; |
| 1272 | 1281 |
|
| 1273 | 1282 |
}; |
| 1274 | 1283 |
|
| 1275 |
/// \ingroup |
|
| 1284 |
/// \ingroup graphs |
|
| 1276 | 1285 |
/// |
| 1277 | 1286 |
/// \brief Graph using a node set of another digraph or graph and an |
| 1278 | 1287 |
/// own edge set. |
| 1279 | 1288 |
/// |
| 1280 | 1289 |
/// This structure can be used to establish another graph over a |
| 1281 | 1290 |
/// node set of an existing one. This class uses the same Node type |
| 1282 | 1291 |
/// as the underlying graph, and each valid node of the original |
| 1283 | 1292 |
/// graph is valid in this arc set, therefore the node objects of |
| 1284 | 1293 |
/// the original graph can be used directly with this class. The |
| 1285 | 1294 |
/// node handling functions (id handling, observing, and iterators) |
| 1286 | 1295 |
/// works equivalently as in the original graph. |
| 1287 | 1296 |
/// |
| 1288 |
/// \param |
|
| 1297 |
/// \param GR The type of the graph which shares its node set |
|
| 1289 | 1298 |
/// with this class. Its interface must conform to the |
| 1290 | 1299 |
/// \ref concepts::Digraph "Digraph" or \ref concepts::Graph "Graph" |
| 1291 | 1300 |
/// concept. |
| 1292 | 1301 |
/// |
| 1293 | 1302 |
/// This implementation is slightly faster than the \c ListEdgeSet, |
| 1294 | 1303 |
/// because it uses continuous storage for edges and it uses just |
| 1295 | 1304 |
/// single-linked lists for enumerate incident edges. Therefore the |
| 1296 | 1305 |
/// edges cannot be erased from the edge sets. |
| 1297 | 1306 |
/// |
| 1298 | 1307 |
/// \warning If a node is erased from the underlying graph and this |
| 1299 | 1308 |
/// node is incident to one edge in the edge set, then the edge set |
| 1300 | 1309 |
/// is invalidated, and it cannot be used anymore. The validity can |
| 1301 | 1310 |
/// be checked with the \c valid() member function. |
| 1302 | 1311 |
/// |
| 1303 |
/// This class |
|
| 1312 |
/// This class fully conforms to the \ref concepts::Graph |
|
| 1304 | 1313 |
/// "Graph" concept. |
| 1305 |
template <typename _Graph> |
|
| 1306 |
class SmartEdgeSet : public EdgeSetExtender<SmartEdgeSetBase<_Graph> > {
|
|
| 1314 |
template <typename GR> |
|
| 1315 |
class SmartEdgeSet : public EdgeSetExtender<SmartEdgeSetBase<GR> > {
|
|
| 1316 |
typedef EdgeSetExtender<SmartEdgeSetBase<GR> > Parent; |
|
| 1307 | 1317 |
|
| 1308 | 1318 |
public: |
| 1309 | 1319 |
|
| 1310 |
typedef EdgeSetExtender<SmartEdgeSetBase<_Graph> > Parent; |
|
| 1311 |
|
|
| 1312 | 1320 |
typedef typename Parent::Node Node; |
| 1313 | 1321 |
typedef typename Parent::Arc Arc; |
| 1314 | 1322 |
typedef typename Parent::Edge Edge; |
| 1315 | 1323 |
|
| 1316 |
typedef _Graph Graph; |
|
| 1317 |
|
|
| 1318 | 1324 |
protected: |
| 1319 | 1325 |
|
| 1320 | 1326 |
typedef typename Parent::NodesImplBase NodesImplBase; |
| 1321 | 1327 |
|
| 1322 | 1328 |
void eraseNode(const Node& node) {
|
| 1323 | 1329 |
if (typename Parent::IncEdgeIt(*this, node) == INVALID) {
|
| 1324 | 1330 |
return; |
| 1325 | 1331 |
} |
| 1326 | 1332 |
throw typename NodesImplBase::Notifier::ImmediateDetach(); |
| 1327 | 1333 |
} |
| 1328 | 1334 |
|
| 1329 | 1335 |
void clearNodes() {
|
| 1330 | 1336 |
Parent::clear(); |
| 1331 | 1337 |
} |
| 1332 | 1338 |
|
| 1333 | 1339 |
class NodesImpl : public NodesImplBase {
|
| 1334 |
public: |
|
| 1335 | 1340 |
typedef NodesImplBase Parent; |
| 1336 | 1341 |
|
| 1337 |
|
|
| 1342 |
public: |
|
| 1343 |
NodesImpl(const GR& graph, SmartEdgeSet& arcset) |
|
| 1338 | 1344 |
: Parent(graph), _arcset(arcset) {}
|
| 1339 | 1345 |
|
| 1340 | 1346 |
virtual ~NodesImpl() {}
|
| 1341 | 1347 |
|
| 1342 | 1348 |
bool attached() const {
|
| 1343 | 1349 |
return Parent::attached(); |
| 1344 | 1350 |
} |
| 1345 | 1351 |
|
| 1346 | 1352 |
protected: |
| 1347 | 1353 |
|
| 1348 | 1354 |
virtual void erase(const Node& node) {
|
| 1349 | 1355 |
try {
|
| 1350 | 1356 |
_arcset.eraseNode(node); |
| 1351 | 1357 |
Parent::erase(node); |
| 1352 | 1358 |
} catch (const typename NodesImplBase::Notifier::ImmediateDetach&) {
|
| 1353 | 1359 |
Parent::clear(); |
| 1354 | 1360 |
throw; |
| 1355 | 1361 |
} |
| 1356 | 1362 |
} |
| 1357 | 1363 |
virtual void erase(const std::vector<Node>& nodes) {
|
| 1358 | 1364 |
try {
|
| 1359 | 1365 |
for (int i = 0; i < int(nodes.size()); ++i) {
|
| 1360 | 1366 |
_arcset.eraseNode(nodes[i]); |
| 1361 | 1367 |
} |
| 1362 | 1368 |
Parent::erase(nodes); |
| 1363 | 1369 |
} catch (const typename NodesImplBase::Notifier::ImmediateDetach&) {
|
| 1364 | 1370 |
Parent::clear(); |
| 1365 | 1371 |
throw; |
| 1366 | 1372 |
} |
| 1367 | 1373 |
} |
| 1368 | 1374 |
virtual void clear() {
|
| 1369 | 1375 |
_arcset.clearNodes(); |
| 1370 | 1376 |
Parent::clear(); |
| 1371 | 1377 |
} |
| 1372 | 1378 |
|
| 1373 | 1379 |
private: |
| 1374 | 1380 |
SmartEdgeSet& _arcset; |
| 1375 | 1381 |
}; |
| 1376 | 1382 |
|
| 1377 |
NodesImpl |
|
| 1383 |
NodesImpl _nodes; |
|
| 1378 | 1384 |
|
| 1379 | 1385 |
public: |
| 1380 | 1386 |
|
| 1381 | 1387 |
/// \brief Constructor of the EdgeSet. |
| 1382 | 1388 |
/// |
| 1383 | 1389 |
/// Constructor of the EdgeSet. |
| 1384 |
SmartEdgeSet(const Graph& graph) : nodes(graph, *this) {
|
|
| 1385 |
Parent::initalize(graph, nodes); |
|
| 1390 |
SmartEdgeSet(const GR& graph) : _nodes(graph, *this) {
|
|
| 1391 |
Parent::initalize(graph, _nodes); |
|
| 1386 | 1392 |
} |
| 1387 | 1393 |
|
| 1388 | 1394 |
/// \brief Add a new edge to the graph. |
| 1389 | 1395 |
/// |
| 1390 | 1396 |
/// Add a new edge to the graph with node \c u |
| 1391 | 1397 |
/// and node \c v endpoints. |
| 1392 |
/// \return |
|
| 1398 |
/// \return The new edge. |
|
| 1393 | 1399 |
Edge addEdge(const Node& u, const Node& v) {
|
| 1394 | 1400 |
return Parent::addEdge(u, v); |
| 1395 | 1401 |
} |
| 1396 | 1402 |
|
| 1397 | 1403 |
/// \brief Validity check |
| 1398 | 1404 |
/// |
| 1399 | 1405 |
/// This functions gives back false if the EdgeSet is |
| 1400 | 1406 |
/// invalidated. It occurs when a node in the underlying graph is |
| 1401 | 1407 |
/// erased and it is not isolated in the EdgeSet. |
| 1402 | 1408 |
bool valid() const {
|
| 1403 |
return |
|
| 1409 |
return _nodes.attached(); |
|
| 1404 | 1410 |
} |
| 1405 | 1411 |
|
| 1406 | 1412 |
}; |
| 1407 | 1413 |
|
| 1408 | 1414 |
} |
| 1409 | 1415 |
|
| 1410 | 1416 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_ELEVATOR_H |
| 20 | 20 |
#define LEMON_ELEVATOR_H |
| 21 | 21 |
|
| 22 | 22 |
///\ingroup auxdat |
| 23 | 23 |
///\file |
| 24 | 24 |
///\brief Elevator class |
| 25 | 25 |
/// |
| 26 | 26 |
///Elevator class implements an efficient data structure |
| 27 | 27 |
///for labeling items in push-relabel type algorithms. |
| 28 | 28 |
/// |
| 29 | 29 |
|
| 30 |
#include <lemon/core.h> |
|
| 30 | 31 |
#include <lemon/bits/traits.h> |
| 31 | 32 |
|
| 32 | 33 |
namespace lemon {
|
| 33 | 34 |
|
| 34 | 35 |
///Class for handling "labels" in push-relabel type algorithms. |
| 35 | 36 |
|
| 36 | 37 |
///A class for handling "labels" in push-relabel type algorithms. |
| 37 | 38 |
/// |
| 38 | 39 |
///\ingroup auxdat |
| 39 | 40 |
///Using this class you can assign "labels" (nonnegative integer numbers) |
| 40 | 41 |
///to the edges or nodes of a graph, manipulate and query them through |
| 41 | 42 |
///operations typically arising in "push-relabel" type algorithms. |
| 42 | 43 |
/// |
| 43 | 44 |
///Each item is either \em active or not, and you can also choose a |
| 44 | 45 |
///highest level active item. |
| 45 | 46 |
/// |
| 46 | 47 |
///\sa LinkedElevator |
| 47 | 48 |
/// |
| 48 |
///\param Graph Type of the underlying graph. |
|
| 49 |
///\param Item Type of the items the data is assigned to (Graph::Node, |
|
| 50 |
///Graph::Arc, Graph::Edge). |
|
| 51 |
template<class Graph, class Item> |
|
| 49 |
///\param GR Type of the underlying graph. |
|
| 50 |
///\param Item Type of the items the data is assigned to (\c GR::Node, |
|
| 51 |
///\c GR::Arc or \c GR::Edge). |
|
| 52 |
template<class GR, class Item> |
|
| 52 | 53 |
class Elevator |
| 53 | 54 |
{
|
| 54 | 55 |
public: |
| 55 | 56 |
|
| 56 | 57 |
typedef Item Key; |
| 57 | 58 |
typedef int Value; |
| 58 | 59 |
|
| 59 | 60 |
private: |
| 60 | 61 |
|
| 61 | 62 |
typedef Item *Vit; |
| 62 |
typedef typename ItemSetTraits<Graph,Item>::template Map<Vit>::Type VitMap; |
|
| 63 |
typedef typename ItemSetTraits<Graph,Item>::template Map<int>::Type IntMap; |
|
| 63 |
typedef typename ItemSetTraits<GR,Item>::template Map<Vit>::Type VitMap; |
|
| 64 |
typedef typename ItemSetTraits<GR,Item>::template Map<int>::Type IntMap; |
|
| 64 | 65 |
|
| 65 |
const |
|
| 66 |
const GR &_g; |
|
| 66 | 67 |
int _max_level; |
| 67 | 68 |
int _item_num; |
| 68 | 69 |
VitMap _where; |
| 69 | 70 |
IntMap _level; |
| 70 | 71 |
std::vector<Item> _items; |
| 71 | 72 |
std::vector<Vit> _first; |
| 72 | 73 |
std::vector<Vit> _last_active; |
| 73 | 74 |
|
| 74 | 75 |
int _highest_active; |
| 75 | 76 |
|
| 76 | 77 |
void copy(Item i, Vit p) |
| 77 | 78 |
{
|
| 78 |
_where |
|
| 79 |
_where[*p=i] = p; |
|
| 79 | 80 |
} |
| 80 | 81 |
void copy(Vit s, Vit p) |
| 81 | 82 |
{
|
| 82 | 83 |
if(s!=p) |
| 83 | 84 |
{
|
| 84 | 85 |
Item i=*s; |
| 85 | 86 |
*p=i; |
| 86 |
_where |
|
| 87 |
_where[i] = p; |
|
| 87 | 88 |
} |
| 88 | 89 |
} |
| 89 | 90 |
void swap(Vit i, Vit j) |
| 90 | 91 |
{
|
| 91 | 92 |
Item ti=*i; |
| 92 | 93 |
Vit ct = _where[ti]; |
| 93 |
_where.set(ti,_where[*i=*j]); |
|
| 94 |
_where.set(*j,ct); |
|
| 94 |
_where[ti] = _where[*i=*j]; |
|
| 95 |
_where[*j] = ct; |
|
| 95 | 96 |
*j=ti; |
| 96 | 97 |
} |
| 97 | 98 |
|
| 98 | 99 |
public: |
| 99 | 100 |
|
| 100 | 101 |
///Constructor with given maximum level. |
| 101 | 102 |
|
| 102 | 103 |
///Constructor with given maximum level. |
| 103 | 104 |
/// |
| 104 | 105 |
///\param graph The underlying graph. |
| 105 | 106 |
///\param max_level The maximum allowed level. |
| 106 | 107 |
///Set the range of the possible labels to <tt>[0..max_level]</tt>. |
| 107 |
Elevator(const |
|
| 108 |
Elevator(const GR &graph,int max_level) : |
|
| 108 | 109 |
_g(graph), |
| 109 | 110 |
_max_level(max_level), |
| 110 | 111 |
_item_num(_max_level), |
| 111 | 112 |
_where(graph), |
| 112 | 113 |
_level(graph,0), |
| 113 | 114 |
_items(_max_level), |
| 114 | 115 |
_first(_max_level+2), |
| 115 | 116 |
_last_active(_max_level+2), |
| 116 | 117 |
_highest_active(-1) {}
|
| 117 | 118 |
///Constructor. |
| 118 | 119 |
|
| 119 | 120 |
///Constructor. |
| 120 | 121 |
/// |
| 121 | 122 |
///\param graph The underlying graph. |
| 122 | 123 |
///Set the range of the possible labels to <tt>[0..max_level]</tt>, |
| 123 | 124 |
///where \c max_level is equal to the number of labeled items in the graph. |
| 124 |
Elevator(const |
|
| 125 |
Elevator(const GR &graph) : |
|
| 125 | 126 |
_g(graph), |
| 126 |
_max_level(countItems< |
|
| 127 |
_max_level(countItems<GR, Item>(graph)), |
|
| 127 | 128 |
_item_num(_max_level), |
| 128 | 129 |
_where(graph), |
| 129 | 130 |
_level(graph,0), |
| 130 | 131 |
_items(_max_level), |
| 131 | 132 |
_first(_max_level+2), |
| 132 | 133 |
_last_active(_max_level+2), |
| 133 | 134 |
_highest_active(-1) |
| 134 | 135 |
{
|
| 135 | 136 |
} |
| 136 | 137 |
|
| 137 | 138 |
///Activate item \c i. |
| 138 | 139 |
|
| 139 | 140 |
///Activate item \c i. |
| 140 | 141 |
///\pre Item \c i shouldn't be active before. |
| 141 | 142 |
void activate(Item i) |
| 142 | 143 |
{
|
| 143 | 144 |
const int l=_level[i]; |
| 144 | 145 |
swap(_where[i],++_last_active[l]); |
| 145 | 146 |
if(l>_highest_active) _highest_active=l; |
| 146 | 147 |
} |
| 147 | 148 |
|
| 148 | 149 |
///Deactivate item \c i. |
| 149 | 150 |
|
| 150 | 151 |
///Deactivate item \c i. |
| 151 | 152 |
///\pre Item \c i must be active before. |
| 152 | 153 |
void deactivate(Item i) |
| 153 | 154 |
{
|
| 154 | 155 |
swap(_where[i],_last_active[_level[i]]--); |
| 155 | 156 |
while(_highest_active>=0 && |
| 156 | 157 |
_last_active[_highest_active]<_first[_highest_active]) |
| 157 | 158 |
_highest_active--; |
| 158 | 159 |
} |
| 159 | 160 |
|
| 160 | 161 |
///Query whether item \c i is active |
| 161 | 162 |
bool active(Item i) const { return _where[i]<=_last_active[_level[i]]; }
|
| 162 | 163 |
|
| 163 | 164 |
///Return the level of item \c i. |
| 164 | 165 |
int operator[](Item i) const { return _level[i]; }
|
| 165 | 166 |
|
| 166 | 167 |
///Return the number of items on level \c l. |
| 167 | 168 |
int onLevel(int l) const |
| 168 | 169 |
{
|
| 169 | 170 |
return _first[l+1]-_first[l]; |
| 170 | 171 |
} |
| 171 | 172 |
///Return true if level \c l is empty. |
| 172 | 173 |
bool emptyLevel(int l) const |
| 173 | 174 |
{
|
| 174 | 175 |
return _first[l+1]-_first[l]==0; |
| 175 | 176 |
} |
| 176 | 177 |
///Return the number of items above level \c l. |
| 177 | 178 |
int aboveLevel(int l) const |
| 178 | 179 |
{
|
| 179 | 180 |
return _first[_max_level+1]-_first[l+1]; |
| 180 | 181 |
} |
| 181 | 182 |
///Return the number of active items on level \c l. |
| 182 | 183 |
int activesOnLevel(int l) const |
| 183 | 184 |
{
|
| 184 | 185 |
return _last_active[l]-_first[l]+1; |
| 185 | 186 |
} |
| 186 | 187 |
///Return true if there is no active item on level \c l. |
| 187 | 188 |
bool activeFree(int l) const |
| 188 | 189 |
{
|
| 189 | 190 |
return _last_active[l]<_first[l]; |
| 190 | 191 |
} |
| 191 | 192 |
///Return the maximum allowed level. |
| 192 | 193 |
int maxLevel() const |
| 193 | 194 |
{
|
| 194 | 195 |
return _max_level; |
| 195 | 196 |
} |
| 196 | 197 |
|
| 197 | 198 |
///\name Highest Active Item |
| 198 | 199 |
///Functions for working with the highest level |
| 199 | 200 |
///active item. |
| 200 | 201 |
|
| 201 | 202 |
///@{
|
| 202 | 203 |
|
| 203 | 204 |
///Return a highest level active item. |
| 204 | 205 |
|
| 205 | 206 |
///Return a highest level active item or INVALID if there is no active |
| 206 | 207 |
///item. |
| 207 | 208 |
Item highestActive() const |
| 208 | 209 |
{
|
| 209 | 210 |
return _highest_active>=0?*_last_active[_highest_active]:INVALID; |
| 210 | 211 |
} |
| 211 | 212 |
|
| 212 | 213 |
///Return the highest active level. |
| 213 | 214 |
|
| 214 | 215 |
///Return the level of the highest active item or -1 if there is no active |
| 215 | 216 |
///item. |
| 216 | 217 |
int highestActiveLevel() const |
| 217 | 218 |
{
|
| 218 | 219 |
return _highest_active; |
| 219 | 220 |
} |
| 220 | 221 |
|
| 221 | 222 |
///Lift the highest active item by one. |
| 222 | 223 |
|
| 223 | 224 |
///Lift the item returned by highestActive() by one. |
| 224 | 225 |
/// |
| 225 | 226 |
void liftHighestActive() |
| 226 | 227 |
{
|
| 227 | 228 |
Item it = *_last_active[_highest_active]; |
| 228 |
|
|
| 229 |
++_level[it]; |
|
| 229 | 230 |
swap(_last_active[_highest_active]--,_last_active[_highest_active+1]); |
| 230 | 231 |
--_first[++_highest_active]; |
| 231 | 232 |
} |
| 232 | 233 |
|
| 233 | 234 |
///Lift the highest active item to the given level. |
| 234 | 235 |
|
| 235 | 236 |
///Lift the item returned by highestActive() to level \c new_level. |
| 236 | 237 |
/// |
| 237 | 238 |
///\warning \c new_level must be strictly higher |
| 238 | 239 |
///than the current level. |
| 239 | 240 |
/// |
| 240 | 241 |
void liftHighestActive(int new_level) |
| 241 | 242 |
{
|
| 242 | 243 |
const Item li = *_last_active[_highest_active]; |
| 243 | 244 |
|
| 244 | 245 |
copy(--_first[_highest_active+1],_last_active[_highest_active]--); |
| 245 | 246 |
for(int l=_highest_active+1;l<new_level;l++) |
| 246 | 247 |
{
|
| 247 | 248 |
copy(--_first[l+1],_first[l]); |
| 248 | 249 |
--_last_active[l]; |
| 249 | 250 |
} |
| 250 | 251 |
copy(li,_first[new_level]); |
| 251 |
_level |
|
| 252 |
_level[li] = new_level; |
|
| 252 | 253 |
_highest_active=new_level; |
| 253 | 254 |
} |
| 254 | 255 |
|
| 255 | 256 |
///Lift the highest active item to the top level. |
| 256 | 257 |
|
| 257 | 258 |
///Lift the item returned by highestActive() to the top level and |
| 258 | 259 |
///deactivate it. |
| 259 | 260 |
void liftHighestActiveToTop() |
| 260 | 261 |
{
|
| 261 | 262 |
const Item li = *_last_active[_highest_active]; |
| 262 | 263 |
|
| 263 | 264 |
copy(--_first[_highest_active+1],_last_active[_highest_active]--); |
| 264 | 265 |
for(int l=_highest_active+1;l<_max_level;l++) |
| 265 | 266 |
{
|
| 266 | 267 |
copy(--_first[l+1],_first[l]); |
| 267 | 268 |
--_last_active[l]; |
| 268 | 269 |
} |
| 269 | 270 |
copy(li,_first[_max_level]); |
| 270 | 271 |
--_last_active[_max_level]; |
| 271 |
_level |
|
| 272 |
_level[li] = _max_level; |
|
| 272 | 273 |
|
| 273 | 274 |
while(_highest_active>=0 && |
| 274 | 275 |
_last_active[_highest_active]<_first[_highest_active]) |
| 275 | 276 |
_highest_active--; |
| 276 | 277 |
} |
| 277 | 278 |
|
| 278 | 279 |
///@} |
| 279 | 280 |
|
| 280 | 281 |
///\name Active Item on Certain Level |
| 281 | 282 |
///Functions for working with the active items. |
| 282 | 283 |
|
| 283 | 284 |
///@{
|
| 284 | 285 |
|
| 285 | 286 |
///Return an active item on level \c l. |
| 286 | 287 |
|
| 287 | 288 |
///Return an active item on level \c l or \ref INVALID if there is no such |
| 288 | 289 |
///an item. (\c l must be from the range [0...\c max_level]. |
| 289 | 290 |
Item activeOn(int l) const |
| 290 | 291 |
{
|
| 291 | 292 |
return _last_active[l]>=_first[l]?*_last_active[l]:INVALID; |
| 292 | 293 |
} |
| 293 | 294 |
|
| 294 | 295 |
///Lift the active item returned by \c activeOn(level) by one. |
| 295 | 296 |
|
| 296 | 297 |
///Lift the active item returned by \ref activeOn() "activeOn(level)" |
| 297 | 298 |
///by one. |
| 298 | 299 |
Item liftActiveOn(int level) |
| 299 | 300 |
{
|
| 300 | 301 |
Item it =*_last_active[level]; |
| 301 |
|
|
| 302 |
++_level[it]; |
|
| 302 | 303 |
swap(_last_active[level]--, --_first[level+1]); |
| 303 | 304 |
if (level+1>_highest_active) ++_highest_active; |
| 304 | 305 |
} |
| 305 | 306 |
|
| 306 | 307 |
///Lift the active item returned by \c activeOn(level) to the given level. |
| 307 | 308 |
|
| 308 | 309 |
///Lift the active item returned by \ref activeOn() "activeOn(level)" |
| 309 | 310 |
///to the given level. |
| 310 | 311 |
void liftActiveOn(int level, int new_level) |
| 311 | 312 |
{
|
| 312 | 313 |
const Item ai = *_last_active[level]; |
| 313 | 314 |
|
| 314 | 315 |
copy(--_first[level+1], _last_active[level]--); |
| 315 | 316 |
for(int l=level+1;l<new_level;l++) |
| 316 | 317 |
{
|
| 317 | 318 |
copy(_last_active[l],_first[l]); |
| 318 | 319 |
copy(--_first[l+1], _last_active[l]--); |
| 319 | 320 |
} |
| 320 | 321 |
copy(ai,_first[new_level]); |
| 321 |
_level |
|
| 322 |
_level[ai] = new_level; |
|
| 322 | 323 |
if (new_level>_highest_active) _highest_active=new_level; |
| 323 | 324 |
} |
| 324 | 325 |
|
| 325 | 326 |
///Lift the active item returned by \c activeOn(level) to the top level. |
| 326 | 327 |
|
| 327 | 328 |
///Lift the active item returned by \ref activeOn() "activeOn(level)" |
| 328 | 329 |
///to the top level and deactivate it. |
| 329 | 330 |
void liftActiveToTop(int level) |
| 330 | 331 |
{
|
| 331 | 332 |
const Item ai = *_last_active[level]; |
| 332 | 333 |
|
| 333 | 334 |
copy(--_first[level+1],_last_active[level]--); |
| 334 | 335 |
for(int l=level+1;l<_max_level;l++) |
| 335 | 336 |
{
|
| 336 | 337 |
copy(_last_active[l],_first[l]); |
| 337 | 338 |
copy(--_first[l+1], _last_active[l]--); |
| 338 | 339 |
} |
| 339 | 340 |
copy(ai,_first[_max_level]); |
| 340 | 341 |
--_last_active[_max_level]; |
| 341 |
_level |
|
| 342 |
_level[ai] = _max_level; |
|
| 342 | 343 |
|
| 343 | 344 |
if (_highest_active==level) {
|
| 344 | 345 |
while(_highest_active>=0 && |
| 345 | 346 |
_last_active[_highest_active]<_first[_highest_active]) |
| 346 | 347 |
_highest_active--; |
| 347 | 348 |
} |
| 348 | 349 |
} |
| 349 | 350 |
|
| 350 | 351 |
///@} |
| 351 | 352 |
|
| 352 | 353 |
///Lift an active item to a higher level. |
| 353 | 354 |
|
| 354 | 355 |
///Lift an active item to a higher level. |
| 355 | 356 |
///\param i The item to be lifted. It must be active. |
| 356 | 357 |
///\param new_level The new level of \c i. It must be strictly higher |
| 357 | 358 |
///than the current level. |
| 358 | 359 |
/// |
| 359 | 360 |
void lift(Item i, int new_level) |
| 360 | 361 |
{
|
| 361 | 362 |
const int lo = _level[i]; |
| 362 | 363 |
const Vit w = _where[i]; |
| 363 | 364 |
|
| 364 | 365 |
copy(_last_active[lo],w); |
| 365 | 366 |
copy(--_first[lo+1],_last_active[lo]--); |
| 366 | 367 |
for(int l=lo+1;l<new_level;l++) |
| 367 | 368 |
{
|
| 368 | 369 |
copy(_last_active[l],_first[l]); |
| 369 | 370 |
copy(--_first[l+1],_last_active[l]--); |
| 370 | 371 |
} |
| 371 | 372 |
copy(i,_first[new_level]); |
| 372 |
_level |
|
| 373 |
_level[i] = new_level; |
|
| 373 | 374 |
if(new_level>_highest_active) _highest_active=new_level; |
| 374 | 375 |
} |
| 375 | 376 |
|
| 376 | 377 |
///Move an inactive item to the top but one level (in a dirty way). |
| 377 | 378 |
|
| 378 | 379 |
///This function moves an inactive item from the top level to the top |
| 379 | 380 |
///but one level (in a dirty way). |
| 380 | 381 |
///\warning It makes the underlying datastructure corrupt, so use it |
| 381 | 382 |
///only if you really know what it is for. |
| 382 | 383 |
///\pre The item is on the top level. |
| 383 | 384 |
void dirtyTopButOne(Item i) {
|
| 384 |
_level |
|
| 385 |
_level[i] = _max_level - 1; |
|
| 385 | 386 |
} |
| 386 | 387 |
|
| 387 | 388 |
///Lift all items on and above the given level to the top level. |
| 388 | 389 |
|
| 389 | 390 |
///This function lifts all items on and above level \c l to the top |
| 390 | 391 |
///level and deactivates them. |
| 391 | 392 |
void liftToTop(int l) |
| 392 | 393 |
{
|
| 393 | 394 |
const Vit f=_first[l]; |
| 394 | 395 |
const Vit tl=_first[_max_level]; |
| 395 | 396 |
for(Vit i=f;i!=tl;++i) |
| 396 |
_level |
|
| 397 |
_level[*i] = _max_level; |
|
| 397 | 398 |
for(int i=l;i<=_max_level;i++) |
| 398 | 399 |
{
|
| 399 | 400 |
_first[i]=f; |
| 400 | 401 |
_last_active[i]=f-1; |
| 401 | 402 |
} |
| 402 | 403 |
for(_highest_active=l-1; |
| 403 | 404 |
_highest_active>=0 && |
| 404 | 405 |
_last_active[_highest_active]<_first[_highest_active]; |
| 405 | 406 |
_highest_active--) ; |
| 406 | 407 |
} |
| 407 | 408 |
|
| 408 | 409 |
private: |
| 409 | 410 |
int _init_lev; |
| 410 | 411 |
Vit _init_num; |
| 411 | 412 |
|
| 412 | 413 |
public: |
| 413 | 414 |
|
| 414 | 415 |
///\name Initialization |
| 415 | 416 |
///Using these functions you can initialize the levels of the items. |
| 416 | 417 |
///\n |
| 417 | 418 |
///The initialization must be started with calling \c initStart(). |
| 418 | 419 |
///Then the items should be listed level by level starting with the |
| 419 | 420 |
///lowest one (level 0) using \c initAddItem() and \c initNewLevel(). |
| 420 | 421 |
///Finally \c initFinish() must be called. |
| 421 | 422 |
///The items not listed are put on the highest level. |
| 422 | 423 |
///@{
|
| 423 | 424 |
|
| 424 | 425 |
///Start the initialization process. |
| 425 | 426 |
void initStart() |
| 426 | 427 |
{
|
| 427 | 428 |
_init_lev=0; |
| 428 | 429 |
_init_num=&_items[0]; |
| 429 | 430 |
_first[0]=&_items[0]; |
| 430 | 431 |
_last_active[0]=&_items[0]-1; |
| 431 | 432 |
Vit n=&_items[0]; |
| 432 |
for(typename ItemSetTraits< |
|
| 433 |
for(typename ItemSetTraits<GR,Item>::ItemIt i(_g);i!=INVALID;++i) |
|
| 433 | 434 |
{
|
| 434 | 435 |
*n=i; |
| 435 |
_where.set(i,n); |
|
| 436 |
_level.set(i,_max_level); |
|
| 436 |
_where[i] = n; |
|
| 437 |
_level[i] = _max_level; |
|
| 437 | 438 |
++n; |
| 438 | 439 |
} |
| 439 | 440 |
} |
| 440 | 441 |
|
| 441 | 442 |
///Add an item to the current level. |
| 442 | 443 |
void initAddItem(Item i) |
| 443 | 444 |
{
|
| 444 | 445 |
swap(_where[i],_init_num); |
| 445 |
_level |
|
| 446 |
_level[i] = _init_lev; |
|
| 446 | 447 |
++_init_num; |
| 447 | 448 |
} |
| 448 | 449 |
|
| 449 | 450 |
///Start a new level. |
| 450 | 451 |
|
| 451 | 452 |
///Start a new level. |
| 452 | 453 |
///It shouldn't be used before the items on level 0 are listed. |
| 453 | 454 |
void initNewLevel() |
| 454 | 455 |
{
|
| 455 | 456 |
_init_lev++; |
| 456 | 457 |
_first[_init_lev]=_init_num; |
| 457 | 458 |
_last_active[_init_lev]=_init_num-1; |
| 458 | 459 |
} |
| 459 | 460 |
|
| 460 | 461 |
///Finalize the initialization process. |
| 461 | 462 |
void initFinish() |
| 462 | 463 |
{
|
| 463 | 464 |
for(_init_lev++;_init_lev<=_max_level;_init_lev++) |
| 464 | 465 |
{
|
| 465 | 466 |
_first[_init_lev]=_init_num; |
| 466 | 467 |
_last_active[_init_lev]=_init_num-1; |
| 467 | 468 |
} |
| 468 | 469 |
_first[_max_level+1]=&_items[0]+_item_num; |
| 469 | 470 |
_last_active[_max_level+1]=&_items[0]+_item_num-1; |
| 470 | 471 |
_highest_active = -1; |
| 471 | 472 |
} |
| 472 | 473 |
|
| 473 | 474 |
///@} |
| 474 | 475 |
|
| 475 | 476 |
}; |
| 476 | 477 |
|
| 477 | 478 |
///Class for handling "labels" in push-relabel type algorithms. |
| 478 | 479 |
|
| 479 | 480 |
///A class for handling "labels" in push-relabel type algorithms. |
| 480 | 481 |
/// |
| 481 | 482 |
///\ingroup auxdat |
| 482 | 483 |
///Using this class you can assign "labels" (nonnegative integer numbers) |
| 483 | 484 |
///to the edges or nodes of a graph, manipulate and query them through |
| 484 | 485 |
///operations typically arising in "push-relabel" type algorithms. |
| 485 | 486 |
/// |
| 486 | 487 |
///Each item is either \em active or not, and you can also choose a |
| 487 | 488 |
///highest level active item. |
| 488 | 489 |
/// |
| 489 | 490 |
///\sa Elevator |
| 490 | 491 |
/// |
| 491 |
///\param Graph Type of the underlying graph. |
|
| 492 |
///\param Item Type of the items the data is assigned to (Graph::Node, |
|
| 493 |
///Graph::Arc, Graph::Edge). |
|
| 494 |
template <class Graph, class Item> |
|
| 492 |
///\param GR Type of the underlying graph. |
|
| 493 |
///\param Item Type of the items the data is assigned to (\c GR::Node, |
|
| 494 |
///\c GR::Arc or \c GR::Edge). |
|
| 495 |
template <class GR, class Item> |
|
| 495 | 496 |
class LinkedElevator {
|
| 496 | 497 |
public: |
| 497 | 498 |
|
| 498 | 499 |
typedef Item Key; |
| 499 | 500 |
typedef int Value; |
| 500 | 501 |
|
| 501 | 502 |
private: |
| 502 | 503 |
|
| 503 |
typedef typename ItemSetTraits< |
|
| 504 |
typedef typename ItemSetTraits<GR,Item>:: |
|
| 504 | 505 |
template Map<Item>::Type ItemMap; |
| 505 |
typedef typename ItemSetTraits< |
|
| 506 |
typedef typename ItemSetTraits<GR,Item>:: |
|
| 506 | 507 |
template Map<int>::Type IntMap; |
| 507 |
typedef typename ItemSetTraits< |
|
| 508 |
typedef typename ItemSetTraits<GR,Item>:: |
|
| 508 | 509 |
template Map<bool>::Type BoolMap; |
| 509 | 510 |
|
| 510 |
const |
|
| 511 |
const GR &_graph; |
|
| 511 | 512 |
int _max_level; |
| 512 | 513 |
int _item_num; |
| 513 | 514 |
std::vector<Item> _first, _last; |
| 514 | 515 |
ItemMap _prev, _next; |
| 515 | 516 |
int _highest_active; |
| 516 | 517 |
IntMap _level; |
| 517 | 518 |
BoolMap _active; |
| 518 | 519 |
|
| 519 | 520 |
public: |
| 520 | 521 |
///Constructor with given maximum level. |
| 521 | 522 |
|
| 522 | 523 |
///Constructor with given maximum level. |
| 523 | 524 |
/// |
| 524 | 525 |
///\param graph The underlying graph. |
| 525 | 526 |
///\param max_level The maximum allowed level. |
| 526 | 527 |
///Set the range of the possible labels to <tt>[0..max_level]</tt>. |
| 527 |
LinkedElevator(const |
|
| 528 |
LinkedElevator(const GR& graph, int max_level) |
|
| 528 | 529 |
: _graph(graph), _max_level(max_level), _item_num(_max_level), |
| 529 | 530 |
_first(_max_level + 1), _last(_max_level + 1), |
| 530 | 531 |
_prev(graph), _next(graph), |
| 531 | 532 |
_highest_active(-1), _level(graph), _active(graph) {}
|
| 532 | 533 |
|
| 533 | 534 |
///Constructor. |
| 534 | 535 |
|
| 535 | 536 |
///Constructor. |
| 536 | 537 |
/// |
| 537 | 538 |
///\param graph The underlying graph. |
| 538 | 539 |
///Set the range of the possible labels to <tt>[0..max_level]</tt>, |
| 539 | 540 |
///where \c max_level is equal to the number of labeled items in the graph. |
| 540 |
LinkedElevator(const Graph& graph) |
|
| 541 |
: _graph(graph), _max_level(countItems<Graph, Item>(graph)), |
|
| 541 |
LinkedElevator(const GR& graph) |
|
| 542 |
: _graph(graph), _max_level(countItems<GR, Item>(graph)), |
|
| 542 | 543 |
_item_num(_max_level), |
| 543 | 544 |
_first(_max_level + 1), _last(_max_level + 1), |
| 544 | 545 |
_prev(graph, INVALID), _next(graph, INVALID), |
| 545 | 546 |
_highest_active(-1), _level(graph), _active(graph) {}
|
| 546 | 547 |
|
| 547 | 548 |
|
| 548 | 549 |
///Activate item \c i. |
| 549 | 550 |
|
| 550 | 551 |
///Activate item \c i. |
| 551 | 552 |
///\pre Item \c i shouldn't be active before. |
| 552 | 553 |
void activate(Item i) {
|
| 553 |
_active |
|
| 554 |
_active[i] = true; |
|
| 554 | 555 |
|
| 555 | 556 |
int level = _level[i]; |
| 556 | 557 |
if (level > _highest_active) {
|
| 557 | 558 |
_highest_active = level; |
| 558 | 559 |
} |
| 559 | 560 |
|
| 560 | 561 |
if (_prev[i] == INVALID || _active[_prev[i]]) return; |
| 561 | 562 |
//unlace |
| 562 |
_next |
|
| 563 |
_next[_prev[i]] = _next[i]; |
|
| 563 | 564 |
if (_next[i] != INVALID) {
|
| 564 |
_prev |
|
| 565 |
_prev[_next[i]] = _prev[i]; |
|
| 565 | 566 |
} else {
|
| 566 | 567 |
_last[level] = _prev[i]; |
| 567 | 568 |
} |
| 568 | 569 |
//lace |
| 569 |
_next.set(i, _first[level]); |
|
| 570 |
_prev.set(_first[level], i); |
|
| 571 |
|
|
| 570 |
_next[i] = _first[level]; |
|
| 571 |
_prev[_first[level]] = i; |
|
| 572 |
_prev[i] = INVALID; |
|
| 572 | 573 |
_first[level] = i; |
| 573 | 574 |
|
| 574 | 575 |
} |
| 575 | 576 |
|
| 576 | 577 |
///Deactivate item \c i. |
| 577 | 578 |
|
| 578 | 579 |
///Deactivate item \c i. |
| 579 | 580 |
///\pre Item \c i must be active before. |
| 580 | 581 |
void deactivate(Item i) {
|
| 581 |
_active |
|
| 582 |
_active[i] = false; |
|
| 582 | 583 |
int level = _level[i]; |
| 583 | 584 |
|
| 584 | 585 |
if (_next[i] == INVALID || !_active[_next[i]]) |
| 585 | 586 |
goto find_highest_level; |
| 586 | 587 |
|
| 587 | 588 |
//unlace |
| 588 |
_prev |
|
| 589 |
_prev[_next[i]] = _prev[i]; |
|
| 589 | 590 |
if (_prev[i] != INVALID) {
|
| 590 |
_next |
|
| 591 |
_next[_prev[i]] = _next[i]; |
|
| 591 | 592 |
} else {
|
| 592 | 593 |
_first[_level[i]] = _next[i]; |
| 593 | 594 |
} |
| 594 | 595 |
//lace |
| 595 |
_prev.set(i, _last[level]); |
|
| 596 |
_next.set(_last[level], i); |
|
| 597 |
|
|
| 596 |
_prev[i] = _last[level]; |
|
| 597 |
_next[_last[level]] = i; |
|
| 598 |
_next[i] = INVALID; |
|
| 598 | 599 |
_last[level] = i; |
| 599 | 600 |
|
| 600 | 601 |
find_highest_level: |
| 601 | 602 |
if (level == _highest_active) {
|
| 602 | 603 |
while (_highest_active >= 0 && activeFree(_highest_active)) |
| 603 | 604 |
--_highest_active; |
| 604 | 605 |
} |
| 605 | 606 |
} |
| 606 | 607 |
|
| 607 | 608 |
///Query whether item \c i is active |
| 608 | 609 |
bool active(Item i) const { return _active[i]; }
|
| 609 | 610 |
|
| 610 | 611 |
///Return the level of item \c i. |
| 611 | 612 |
int operator[](Item i) const { return _level[i]; }
|
| 612 | 613 |
|
| 613 | 614 |
///Return the number of items on level \c l. |
| 614 | 615 |
int onLevel(int l) const {
|
| 615 | 616 |
int num = 0; |
| 616 | 617 |
Item n = _first[l]; |
| 617 | 618 |
while (n != INVALID) {
|
| 618 | 619 |
++num; |
| 619 | 620 |
n = _next[n]; |
| 620 | 621 |
} |
| 621 | 622 |
return num; |
| 622 | 623 |
} |
| 623 | 624 |
|
| 624 | 625 |
///Return true if the level is empty. |
| 625 | 626 |
bool emptyLevel(int l) const {
|
| 626 | 627 |
return _first[l] == INVALID; |
| 627 | 628 |
} |
| 628 | 629 |
|
| 629 | 630 |
///Return the number of items above level \c l. |
| 630 | 631 |
int aboveLevel(int l) const {
|
| 631 | 632 |
int num = 0; |
| 632 | 633 |
for (int level = l + 1; level < _max_level; ++level) |
| 633 | 634 |
num += onLevel(level); |
| 634 | 635 |
return num; |
| 635 | 636 |
} |
| 636 | 637 |
|
| 637 | 638 |
///Return the number of active items on level \c l. |
| 638 | 639 |
int activesOnLevel(int l) const {
|
| 639 | 640 |
int num = 0; |
| 640 | 641 |
Item n = _first[l]; |
| 641 | 642 |
while (n != INVALID && _active[n]) {
|
| 642 | 643 |
++num; |
| 643 | 644 |
n = _next[n]; |
| 644 | 645 |
} |
| 645 | 646 |
return num; |
| 646 | 647 |
} |
| 647 | 648 |
|
| 648 | 649 |
///Return true if there is no active item on level \c l. |
| 649 | 650 |
bool activeFree(int l) const {
|
| 650 | 651 |
return _first[l] == INVALID || !_active[_first[l]]; |
| 651 | 652 |
} |
| 652 | 653 |
|
| 653 | 654 |
///Return the maximum allowed level. |
| 654 | 655 |
int maxLevel() const {
|
| 655 | 656 |
return _max_level; |
| 656 | 657 |
} |
| 657 | 658 |
|
| 658 | 659 |
///\name Highest Active Item |
| 659 | 660 |
///Functions for working with the highest level |
| 660 | 661 |
///active item. |
| 661 | 662 |
|
| 662 | 663 |
///@{
|
| 663 | 664 |
|
| 664 | 665 |
///Return a highest level active item. |
| 665 | 666 |
|
| 666 | 667 |
///Return a highest level active item or INVALID if there is no active |
| 667 | 668 |
///item. |
| 668 | 669 |
Item highestActive() const {
|
| 669 | 670 |
return _highest_active >= 0 ? _first[_highest_active] : INVALID; |
| 670 | 671 |
} |
| 671 | 672 |
|
| 672 | 673 |
///Return the highest active level. |
| 673 | 674 |
|
| 674 | 675 |
///Return the level of the highest active item or -1 if there is no active |
| 675 | 676 |
///item. |
| 676 | 677 |
int highestActiveLevel() const {
|
| 677 | 678 |
return _highest_active; |
| 678 | 679 |
} |
| 679 | 680 |
|
| 680 | 681 |
///Lift the highest active item by one. |
| 681 | 682 |
|
| 682 | 683 |
///Lift the item returned by highestActive() by one. |
| 683 | 684 |
/// |
| 684 | 685 |
void liftHighestActive() {
|
| 685 | 686 |
Item i = _first[_highest_active]; |
| 686 | 687 |
if (_next[i] != INVALID) {
|
| 687 |
_prev |
|
| 688 |
_prev[_next[i]] = INVALID; |
|
| 688 | 689 |
_first[_highest_active] = _next[i]; |
| 689 | 690 |
} else {
|
| 690 | 691 |
_first[_highest_active] = INVALID; |
| 691 | 692 |
_last[_highest_active] = INVALID; |
| 692 | 693 |
} |
| 693 |
_level |
|
| 694 |
_level[i] = ++_highest_active; |
|
| 694 | 695 |
if (_first[_highest_active] == INVALID) {
|
| 695 | 696 |
_first[_highest_active] = i; |
| 696 | 697 |
_last[_highest_active] = i; |
| 697 |
_prev.set(i, INVALID); |
|
| 698 |
_next.set(i, INVALID); |
|
| 698 |
_prev[i] = INVALID; |
|
| 699 |
_next[i] = INVALID; |
|
| 699 | 700 |
} else {
|
| 700 |
_prev.set(_first[_highest_active], i); |
|
| 701 |
_next.set(i, _first[_highest_active]); |
|
| 701 |
_prev[_first[_highest_active]] = i; |
|
| 702 |
_next[i] = _first[_highest_active]; |
|
| 702 | 703 |
_first[_highest_active] = i; |
| 703 | 704 |
} |
| 704 | 705 |
} |
| 705 | 706 |
|
| 706 | 707 |
///Lift the highest active item to the given level. |
| 707 | 708 |
|
| 708 | 709 |
///Lift the item returned by highestActive() to level \c new_level. |
| 709 | 710 |
/// |
| 710 | 711 |
///\warning \c new_level must be strictly higher |
| 711 | 712 |
///than the current level. |
| 712 | 713 |
/// |
| 713 | 714 |
void liftHighestActive(int new_level) {
|
| 714 | 715 |
Item i = _first[_highest_active]; |
| 715 | 716 |
if (_next[i] != INVALID) {
|
| 716 |
_prev |
|
| 717 |
_prev[_next[i]] = INVALID; |
|
| 717 | 718 |
_first[_highest_active] = _next[i]; |
| 718 | 719 |
} else {
|
| 719 | 720 |
_first[_highest_active] = INVALID; |
| 720 | 721 |
_last[_highest_active] = INVALID; |
| 721 | 722 |
} |
| 722 |
_level |
|
| 723 |
_level[i] = _highest_active = new_level; |
|
| 723 | 724 |
if (_first[_highest_active] == INVALID) {
|
| 724 | 725 |
_first[_highest_active] = _last[_highest_active] = i; |
| 725 |
_prev.set(i, INVALID); |
|
| 726 |
_next.set(i, INVALID); |
|
| 726 |
_prev[i] = INVALID; |
|
| 727 |
_next[i] = INVALID; |
|
| 727 | 728 |
} else {
|
| 728 |
_prev.set(_first[_highest_active], i); |
|
| 729 |
_next.set(i, _first[_highest_active]); |
|
| 729 |
_prev[_first[_highest_active]] = i; |
|
| 730 |
_next[i] = _first[_highest_active]; |
|
| 730 | 731 |
_first[_highest_active] = i; |
| 731 | 732 |
} |
| 732 | 733 |
} |
| 733 | 734 |
|
| 734 | 735 |
///Lift the highest active item to the top level. |
| 735 | 736 |
|
| 736 | 737 |
///Lift the item returned by highestActive() to the top level and |
| 737 | 738 |
///deactivate it. |
| 738 | 739 |
void liftHighestActiveToTop() {
|
| 739 | 740 |
Item i = _first[_highest_active]; |
| 740 |
_level |
|
| 741 |
_level[i] = _max_level; |
|
| 741 | 742 |
if (_next[i] != INVALID) {
|
| 742 |
_prev |
|
| 743 |
_prev[_next[i]] = INVALID; |
|
| 743 | 744 |
_first[_highest_active] = _next[i]; |
| 744 | 745 |
} else {
|
| 745 | 746 |
_first[_highest_active] = INVALID; |
| 746 | 747 |
_last[_highest_active] = INVALID; |
| 747 | 748 |
} |
| 748 | 749 |
while (_highest_active >= 0 && activeFree(_highest_active)) |
| 749 | 750 |
--_highest_active; |
| 750 | 751 |
} |
| 751 | 752 |
|
| 752 | 753 |
///@} |
| 753 | 754 |
|
| 754 | 755 |
///\name Active Item on Certain Level |
| 755 | 756 |
///Functions for working with the active items. |
| 756 | 757 |
|
| 757 | 758 |
///@{
|
| 758 | 759 |
|
| 759 | 760 |
///Return an active item on level \c l. |
| 760 | 761 |
|
| 761 | 762 |
///Return an active item on level \c l or \ref INVALID if there is no such |
| 762 | 763 |
///an item. (\c l must be from the range [0...\c max_level]. |
| 763 | 764 |
Item activeOn(int l) const |
| 764 | 765 |
{
|
| 765 | 766 |
return _active[_first[l]] ? _first[l] : INVALID; |
| 766 | 767 |
} |
| 767 | 768 |
|
| 768 | 769 |
///Lift the active item returned by \c activeOn(l) by one. |
| 769 | 770 |
|
| 770 | 771 |
///Lift the active item returned by \ref activeOn() "activeOn(l)" |
| 771 | 772 |
///by one. |
| 772 | 773 |
Item liftActiveOn(int l) |
| 773 | 774 |
{
|
| 774 | 775 |
Item i = _first[l]; |
| 775 | 776 |
if (_next[i] != INVALID) {
|
| 776 |
_prev |
|
| 777 |
_prev[_next[i]] = INVALID; |
|
| 777 | 778 |
_first[l] = _next[i]; |
| 778 | 779 |
} else {
|
| 779 | 780 |
_first[l] = INVALID; |
| 780 | 781 |
_last[l] = INVALID; |
| 781 | 782 |
} |
| 782 |
_level |
|
| 783 |
_level[i] = ++l; |
|
| 783 | 784 |
if (_first[l] == INVALID) {
|
| 784 | 785 |
_first[l] = _last[l] = i; |
| 785 |
_prev.set(i, INVALID); |
|
| 786 |
_next.set(i, INVALID); |
|
| 786 |
_prev[i] = INVALID; |
|
| 787 |
_next[i] = INVALID; |
|
| 787 | 788 |
} else {
|
| 788 |
_prev.set(_first[l], i); |
|
| 789 |
_next.set(i, _first[l]); |
|
| 789 |
_prev[_first[l]] = i; |
|
| 790 |
_next[i] = _first[l]; |
|
| 790 | 791 |
_first[l] = i; |
| 791 | 792 |
} |
| 792 | 793 |
if (_highest_active < l) {
|
| 793 | 794 |
_highest_active = l; |
| 794 | 795 |
} |
| 795 | 796 |
} |
| 796 | 797 |
|
| 797 | 798 |
///Lift the active item returned by \c activeOn(l) to the given level. |
| 798 | 799 |
|
| 799 | 800 |
///Lift the active item returned by \ref activeOn() "activeOn(l)" |
| 800 | 801 |
///to the given level. |
| 801 | 802 |
void liftActiveOn(int l, int new_level) |
| 802 | 803 |
{
|
| 803 | 804 |
Item i = _first[l]; |
| 804 | 805 |
if (_next[i] != INVALID) {
|
| 805 |
_prev |
|
| 806 |
_prev[_next[i]] = INVALID; |
|
| 806 | 807 |
_first[l] = _next[i]; |
| 807 | 808 |
} else {
|
| 808 | 809 |
_first[l] = INVALID; |
| 809 | 810 |
_last[l] = INVALID; |
| 810 | 811 |
} |
| 811 |
_level |
|
| 812 |
_level[i] = l = new_level; |
|
| 812 | 813 |
if (_first[l] == INVALID) {
|
| 813 | 814 |
_first[l] = _last[l] = i; |
| 814 |
_prev.set(i, INVALID); |
|
| 815 |
_next.set(i, INVALID); |
|
| 815 |
_prev[i] = INVALID; |
|
| 816 |
_next[i] = INVALID; |
|
| 816 | 817 |
} else {
|
| 817 |
_prev.set(_first[l], i); |
|
| 818 |
_next.set(i, _first[l]); |
|
| 818 |
_prev[_first[l]] = i; |
|
| 819 |
_next[i] = _first[l]; |
|
| 819 | 820 |
_first[l] = i; |
| 820 | 821 |
} |
| 821 | 822 |
if (_highest_active < l) {
|
| 822 | 823 |
_highest_active = l; |
| 823 | 824 |
} |
| 824 | 825 |
} |
| 825 | 826 |
|
| 826 | 827 |
///Lift the active item returned by \c activeOn(l) to the top level. |
| 827 | 828 |
|
| 828 | 829 |
///Lift the active item returned by \ref activeOn() "activeOn(l)" |
| 829 | 830 |
///to the top level and deactivate it. |
| 830 | 831 |
void liftActiveToTop(int l) |
| 831 | 832 |
{
|
| 832 | 833 |
Item i = _first[l]; |
| 833 | 834 |
if (_next[i] != INVALID) {
|
| 834 |
_prev |
|
| 835 |
_prev[_next[i]] = INVALID; |
|
| 835 | 836 |
_first[l] = _next[i]; |
| 836 | 837 |
} else {
|
| 837 | 838 |
_first[l] = INVALID; |
| 838 | 839 |
_last[l] = INVALID; |
| 839 | 840 |
} |
| 840 |
_level |
|
| 841 |
_level[i] = _max_level; |
|
| 841 | 842 |
if (l == _highest_active) {
|
| 842 | 843 |
while (_highest_active >= 0 && activeFree(_highest_active)) |
| 843 | 844 |
--_highest_active; |
| 844 | 845 |
} |
| 845 | 846 |
} |
| 846 | 847 |
|
| 847 | 848 |
///@} |
| 848 | 849 |
|
| 849 | 850 |
/// \brief Lift an active item to a higher level. |
| 850 | 851 |
/// |
| 851 | 852 |
/// Lift an active item to a higher level. |
| 852 | 853 |
/// \param i The item to be lifted. It must be active. |
| 853 | 854 |
/// \param new_level The new level of \c i. It must be strictly higher |
| 854 | 855 |
/// than the current level. |
| 855 | 856 |
/// |
| 856 | 857 |
void lift(Item i, int new_level) {
|
| 857 | 858 |
if (_next[i] != INVALID) {
|
| 858 |
_prev |
|
| 859 |
_prev[_next[i]] = _prev[i]; |
|
| 859 | 860 |
} else {
|
| 860 | 861 |
_last[new_level] = _prev[i]; |
| 861 | 862 |
} |
| 862 | 863 |
if (_prev[i] != INVALID) {
|
| 863 |
_next |
|
| 864 |
_next[_prev[i]] = _next[i]; |
|
| 864 | 865 |
} else {
|
| 865 | 866 |
_first[new_level] = _next[i]; |
| 866 | 867 |
} |
| 867 |
_level |
|
| 868 |
_level[i] = new_level; |
|
| 868 | 869 |
if (_first[new_level] == INVALID) {
|
| 869 | 870 |
_first[new_level] = _last[new_level] = i; |
| 870 |
_prev.set(i, INVALID); |
|
| 871 |
_next.set(i, INVALID); |
|
| 871 |
_prev[i] = INVALID; |
|
| 872 |
_next[i] = INVALID; |
|
| 872 | 873 |
} else {
|
| 873 |
_prev.set(_first[new_level], i); |
|
| 874 |
_next.set(i, _first[new_level]); |
|
| 874 |
_prev[_first[new_level]] = i; |
|
| 875 |
_next[i] = _first[new_level]; |
|
| 875 | 876 |
_first[new_level] = i; |
| 876 | 877 |
} |
| 877 | 878 |
if (_highest_active < new_level) {
|
| 878 | 879 |
_highest_active = new_level; |
| 879 | 880 |
} |
| 880 | 881 |
} |
| 881 | 882 |
|
| 882 | 883 |
///Move an inactive item to the top but one level (in a dirty way). |
| 883 | 884 |
|
| 884 | 885 |
///This function moves an inactive item from the top level to the top |
| 885 | 886 |
///but one level (in a dirty way). |
| 886 | 887 |
///\warning It makes the underlying datastructure corrupt, so use it |
| 887 | 888 |
///only if you really know what it is for. |
| 888 | 889 |
///\pre The item is on the top level. |
| 889 | 890 |
void dirtyTopButOne(Item i) {
|
| 890 |
_level |
|
| 891 |
_level[i] = _max_level - 1; |
|
| 891 | 892 |
} |
| 892 | 893 |
|
| 893 | 894 |
///Lift all items on and above the given level to the top level. |
| 894 | 895 |
|
| 895 | 896 |
///This function lifts all items on and above level \c l to the top |
| 896 | 897 |
///level and deactivates them. |
| 897 | 898 |
void liftToTop(int l) {
|
| 898 | 899 |
for (int i = l + 1; _first[i] != INVALID; ++i) {
|
| 899 | 900 |
Item n = _first[i]; |
| 900 | 901 |
while (n != INVALID) {
|
| 901 |
_level |
|
| 902 |
_level[n] = _max_level; |
|
| 902 | 903 |
n = _next[n]; |
| 903 | 904 |
} |
| 904 | 905 |
_first[i] = INVALID; |
| 905 | 906 |
_last[i] = INVALID; |
| 906 | 907 |
} |
| 907 | 908 |
if (_highest_active > l - 1) {
|
| 908 | 909 |
_highest_active = l - 1; |
| 909 | 910 |
while (_highest_active >= 0 && activeFree(_highest_active)) |
| 910 | 911 |
--_highest_active; |
| 911 | 912 |
} |
| 912 | 913 |
} |
| 913 | 914 |
|
| 914 | 915 |
private: |
| 915 | 916 |
|
| 916 | 917 |
int _init_level; |
| 917 | 918 |
|
| 918 | 919 |
public: |
| 919 | 920 |
|
| 920 | 921 |
///\name Initialization |
| 921 | 922 |
///Using these functions you can initialize the levels of the items. |
| 922 | 923 |
///\n |
| 923 | 924 |
///The initialization must be started with calling \c initStart(). |
| 924 | 925 |
///Then the items should be listed level by level starting with the |
| 925 | 926 |
///lowest one (level 0) using \c initAddItem() and \c initNewLevel(). |
| 926 | 927 |
///Finally \c initFinish() must be called. |
| 927 | 928 |
///The items not listed are put on the highest level. |
| 928 | 929 |
///@{
|
| 929 | 930 |
|
| 930 | 931 |
///Start the initialization process. |
| 931 | 932 |
void initStart() {
|
| 932 | 933 |
|
| 933 | 934 |
for (int i = 0; i <= _max_level; ++i) {
|
| 934 | 935 |
_first[i] = _last[i] = INVALID; |
| 935 | 936 |
} |
| 936 | 937 |
_init_level = 0; |
| 937 |
for(typename ItemSetTraits< |
|
| 938 |
for(typename ItemSetTraits<GR,Item>::ItemIt i(_graph); |
|
| 938 | 939 |
i != INVALID; ++i) {
|
| 939 |
_level.set(i, _max_level); |
|
| 940 |
_active.set(i, false); |
|
| 940 |
_level[i] = _max_level; |
|
| 941 |
_active[i] = false; |
|
| 941 | 942 |
} |
| 942 | 943 |
} |
| 943 | 944 |
|
| 944 | 945 |
///Add an item to the current level. |
| 945 | 946 |
void initAddItem(Item i) {
|
| 946 |
_level |
|
| 947 |
_level[i] = _init_level; |
|
| 947 | 948 |
if (_last[_init_level] == INVALID) {
|
| 948 | 949 |
_first[_init_level] = i; |
| 949 | 950 |
_last[_init_level] = i; |
| 950 |
_prev.set(i, INVALID); |
|
| 951 |
_next.set(i, INVALID); |
|
| 951 |
_prev[i] = INVALID; |
|
| 952 |
_next[i] = INVALID; |
|
| 952 | 953 |
} else {
|
| 953 |
_prev.set(i, _last[_init_level]); |
|
| 954 |
_next.set(i, INVALID); |
|
| 955 |
|
|
| 954 |
_prev[i] = _last[_init_level]; |
|
| 955 |
_next[i] = INVALID; |
|
| 956 |
_next[_last[_init_level]] = i; |
|
| 956 | 957 |
_last[_init_level] = i; |
| 957 | 958 |
} |
| 958 | 959 |
} |
| 959 | 960 |
|
| 960 | 961 |
///Start a new level. |
| 961 | 962 |
|
| 962 | 963 |
///Start a new level. |
| 963 | 964 |
///It shouldn't be used before the items on level 0 are listed. |
| 964 | 965 |
void initNewLevel() {
|
| 965 | 966 |
++_init_level; |
| 966 | 967 |
} |
| 967 | 968 |
|
| 968 | 969 |
///Finalize the initialization process. |
| 969 | 970 |
void initFinish() {
|
| 970 | 971 |
_highest_active = -1; |
| 971 | 972 |
} |
| 972 | 973 |
|
| 973 | 974 |
///@} |
| 974 | 975 |
|
| 975 | 976 |
}; |
| 976 | 977 |
|
| 977 | 978 |
|
| 978 | 979 |
} //END OF NAMESPACE LEMON |
| 979 | 980 |
|
| 980 | 981 |
#endif |
| 981 | 982 |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_FULL_GRAPH_H |
| 20 | 20 |
#define LEMON_FULL_GRAPH_H |
| 21 | 21 |
|
| 22 | 22 |
#include <lemon/core.h> |
| 23 | 23 |
#include <lemon/bits/graph_extender.h> |
| 24 | 24 |
|
| 25 | 25 |
///\ingroup graphs |
| 26 | 26 |
///\file |
| 27 |
///\brief |
|
| 27 |
///\brief FullDigraph and FullGraph classes. |
|
| 28 | 28 |
|
| 29 | 29 |
namespace lemon {
|
| 30 | 30 |
|
| 31 | 31 |
class FullDigraphBase {
|
| 32 | 32 |
public: |
| 33 | 33 |
|
| 34 |
typedef FullDigraphBase |
|
| 34 |
typedef FullDigraphBase Digraph; |
|
| 35 | 35 |
|
| 36 | 36 |
class Node; |
| 37 | 37 |
class Arc; |
| 38 | 38 |
|
| 39 | 39 |
protected: |
| 40 | 40 |
|
| 41 | 41 |
int _node_num; |
| 42 | 42 |
int _arc_num; |
| 43 | 43 |
|
| 44 | 44 |
FullDigraphBase() {}
|
| 45 | 45 |
|
| 46 | 46 |
void construct(int n) { _node_num = n; _arc_num = n * n; }
|
| 47 | 47 |
|
| 48 | 48 |
public: |
| 49 | 49 |
|
| 50 | 50 |
typedef True NodeNumTag; |
| 51 | 51 |
typedef True ArcNumTag; |
| 52 | 52 |
|
| 53 | 53 |
Node operator()(int ix) const { return Node(ix); }
|
| 54 |
int index(const Node& node) |
|
| 54 |
static int index(const Node& node) { return node._id; }
|
|
| 55 | 55 |
|
| 56 | 56 |
Arc arc(const Node& s, const Node& t) const {
|
| 57 | 57 |
return Arc(s._id * _node_num + t._id); |
| 58 | 58 |
} |
| 59 | 59 |
|
| 60 | 60 |
int nodeNum() const { return _node_num; }
|
| 61 | 61 |
int arcNum() const { return _arc_num; }
|
| 62 | 62 |
|
| 63 | 63 |
int maxNodeId() const { return _node_num - 1; }
|
| 64 | 64 |
int maxArcId() const { return _arc_num - 1; }
|
| 65 | 65 |
|
| 66 | 66 |
Node source(Arc arc) const { return arc._id / _node_num; }
|
| 67 | 67 |
Node target(Arc arc) const { return arc._id % _node_num; }
|
| 68 | 68 |
|
| 69 | 69 |
static int id(Node node) { return node._id; }
|
| 70 | 70 |
static int id(Arc arc) { return arc._id; }
|
| 71 | 71 |
|
| 72 | 72 |
static Node nodeFromId(int id) { return Node(id);}
|
| 73 | 73 |
static Arc arcFromId(int id) { return Arc(id);}
|
| 74 | 74 |
|
| 75 | 75 |
typedef True FindArcTag; |
| 76 | 76 |
|
| 77 | 77 |
Arc findArc(Node s, Node t, Arc prev = INVALID) const {
|
| 78 | 78 |
return prev == INVALID ? arc(s, t) : INVALID; |
| 79 | 79 |
} |
| 80 | 80 |
|
| 81 | 81 |
class Node {
|
| 82 | 82 |
friend class FullDigraphBase; |
| 83 | 83 |
|
| 84 | 84 |
protected: |
| 85 | 85 |
int _id; |
| 86 | 86 |
Node(int id) : _id(id) {}
|
| 87 | 87 |
public: |
| 88 | 88 |
Node() {}
|
| 89 | 89 |
Node (Invalid) : _id(-1) {}
|
| 90 | 90 |
bool operator==(const Node node) const {return _id == node._id;}
|
| 91 | 91 |
bool operator!=(const Node node) const {return _id != node._id;}
|
| 92 | 92 |
bool operator<(const Node node) const {return _id < node._id;}
|
| 93 | 93 |
}; |
| 94 | 94 |
|
| 95 | 95 |
class Arc {
|
| 96 | 96 |
friend class FullDigraphBase; |
| 97 | 97 |
|
| 98 | 98 |
protected: |
| 99 | 99 |
int _id; // _node_num * source + target; |
| 100 | 100 |
|
| 101 | 101 |
Arc(int id) : _id(id) {}
|
| 102 | 102 |
|
| 103 | 103 |
public: |
| 104 | 104 |
Arc() { }
|
| 105 | 105 |
Arc (Invalid) { _id = -1; }
|
| 106 | 106 |
bool operator==(const Arc arc) const {return _id == arc._id;}
|
| 107 | 107 |
bool operator!=(const Arc arc) const {return _id != arc._id;}
|
| 108 | 108 |
bool operator<(const Arc arc) const {return _id < arc._id;}
|
| 109 | 109 |
}; |
| 110 | 110 |
|
| 111 | 111 |
void first(Node& node) const {
|
| 112 | 112 |
node._id = _node_num - 1; |
| 113 | 113 |
} |
| 114 | 114 |
|
| 115 | 115 |
static void next(Node& node) {
|
| 116 | 116 |
--node._id; |
| 117 | 117 |
} |
| 118 | 118 |
|
| 119 | 119 |
void first(Arc& arc) const {
|
| 120 | 120 |
arc._id = _arc_num - 1; |
| 121 | 121 |
} |
| 122 | 122 |
|
| 123 | 123 |
static void next(Arc& arc) {
|
| 124 | 124 |
--arc._id; |
| 125 | 125 |
} |
| 126 | 126 |
|
| 127 | 127 |
void firstOut(Arc& arc, const Node& node) const {
|
| 128 | 128 |
arc._id = (node._id + 1) * _node_num - 1; |
| 129 | 129 |
} |
| 130 | 130 |
|
| 131 | 131 |
void nextOut(Arc& arc) const {
|
| 132 | 132 |
if (arc._id % _node_num == 0) arc._id = 0; |
| 133 | 133 |
--arc._id; |
| 134 | 134 |
} |
| 135 | 135 |
|
| 136 | 136 |
void firstIn(Arc& arc, const Node& node) const {
|
| 137 | 137 |
arc._id = _arc_num + node._id - _node_num; |
| 138 | 138 |
} |
| 139 | 139 |
|
| 140 | 140 |
void nextIn(Arc& arc) const {
|
| 141 | 141 |
arc._id -= _node_num; |
| 142 | 142 |
if (arc._id < 0) arc._id = -1; |
| 143 | 143 |
} |
| 144 | 144 |
|
| 145 | 145 |
}; |
| 146 | 146 |
|
| 147 | 147 |
typedef DigraphExtender<FullDigraphBase> ExtendedFullDigraphBase; |
| 148 | 148 |
|
| 149 | 149 |
/// \ingroup graphs |
| 150 | 150 |
/// |
| 151 |
/// \brief A full |
|
| 151 |
/// \brief A directed full graph class. |
|
| 152 | 152 |
/// |
| 153 |
/// This is a simple and fast directed full graph implementation. |
|
| 154 |
/// From each node go arcs to each node (including the source node), |
|
| 155 |
/// therefore the number of the arcs in the digraph is the square of |
|
| 156 |
/// the node number. This digraph type is completely static, so you |
|
| 157 |
/// can neither add nor delete either arcs or nodes, and it needs |
|
| 158 |
/// constant space in memory. |
|
| 153 |
/// FullDigraph is a simple and fast implmenetation of directed full |
|
| 154 |
/// (complete) graphs. It contains an arc from each node to each node |
|
| 155 |
/// (including a loop for each node), therefore the number of arcs |
|
| 156 |
/// is the square of the number of nodes. |
|
| 157 |
/// This class is completely static and it needs constant memory space. |
|
| 158 |
/// Thus you can neither add nor delete nodes or arcs, however |
|
| 159 |
/// the structure can be resized using resize(). |
|
| 159 | 160 |
/// |
| 160 |
/// This class conforms to the \ref concepts::Digraph "Digraph" concept |
|
| 161 |
/// and it also has an important extra feature that its maps are |
|
| 162 |
/// |
|
| 161 |
/// This type fully conforms to the \ref concepts::Digraph "Digraph concept". |
|
| 162 |
/// Most of its member functions and nested classes are documented |
|
| 163 |
/// only in the concept class. |
|
| 163 | 164 |
/// |
| 164 |
/// |
|
| 165 |
/// \note FullDigraph and FullGraph classes are very similar, |
|
| 165 | 166 |
/// but there are two differences. While this class conforms only |
| 166 |
/// to the \ref concepts::Digraph "Digraph" concept, the \c FullGraph |
|
| 167 |
/// class conforms to the \ref concepts::Graph "Graph" concept, |
|
| 168 |
/// moreover \c FullGraph does not contain a loop arc for each |
|
| 169 |
/// node as \c FullDigraph does. |
|
| 167 |
/// to the \ref concepts::Digraph "Digraph" concept, FullGraph |
|
| 168 |
/// conforms to the \ref concepts::Graph "Graph" concept, |
|
| 169 |
/// moreover FullGraph does not contain a loop for each |
|
| 170 |
/// node as this class does. |
|
| 170 | 171 |
/// |
| 171 | 172 |
/// \sa FullGraph |
| 172 | 173 |
class FullDigraph : public ExtendedFullDigraphBase {
|
| 174 |
typedef ExtendedFullDigraphBase Parent; |
|
| 175 |
|
|
| 173 | 176 |
public: |
| 174 | 177 |
|
| 175 |
typedef ExtendedFullDigraphBase Parent; |
|
| 176 |
|
|
| 177 |
/// \brief |
|
| 178 |
/// \brief Default constructor. |
|
| 179 |
/// |
|
| 180 |
/// Default constructor. The number of nodes and arcs will be zero. |
|
| 178 | 181 |
FullDigraph() { construct(0); }
|
| 179 | 182 |
|
| 180 | 183 |
/// \brief Constructor |
| 181 | 184 |
/// |
| 182 | 185 |
/// Constructor. |
| 183 | 186 |
/// \param n The number of the nodes. |
| 184 | 187 |
FullDigraph(int n) { construct(n); }
|
| 185 | 188 |
|
| 186 | 189 |
/// \brief Resizes the digraph |
| 187 | 190 |
/// |
| 188 |
/// Resizes the digraph. The function will fully destroy and |
|
| 189 |
/// rebuild the digraph. This cause that the maps of the digraph will |
|
| 191 |
/// This function resizes the digraph. It fully destroys and |
|
| 192 |
/// rebuilds the structure, therefore the maps of the digraph will be |
|
| 190 | 193 |
/// reallocated automatically and the previous values will be lost. |
| 191 | 194 |
void resize(int n) {
|
| 192 | 195 |
Parent::notifier(Arc()).clear(); |
| 193 | 196 |
Parent::notifier(Node()).clear(); |
| 194 | 197 |
construct(n); |
| 195 | 198 |
Parent::notifier(Node()).build(); |
| 196 | 199 |
Parent::notifier(Arc()).build(); |
| 197 | 200 |
} |
| 198 | 201 |
|
| 199 | 202 |
/// \brief Returns the node with the given index. |
| 200 | 203 |
/// |
| 201 |
/// Returns the node with the given index. Since it is a static |
|
| 202 |
/// digraph its nodes can be indexed with integers from the range |
|
| 203 |
/// |
|
| 204 |
/// Returns the node with the given index. Since this structure is |
|
| 205 |
/// completely static, the nodes can be indexed with integers from |
|
| 206 |
/// the range <tt>[0..nodeNum()-1]</tt>. |
|
| 204 | 207 |
/// \sa index() |
| 205 | 208 |
Node operator()(int ix) const { return Parent::operator()(ix); }
|
| 206 | 209 |
|
| 207 | 210 |
/// \brief Returns the index of the given node. |
| 208 | 211 |
/// |
| 209 |
/// Returns the index of the given node. Since it is a static |
|
| 210 |
/// digraph its nodes can be indexed with integers from the range |
|
| 211 |
/// <tt>[0..nodeNum()-1]</tt>. |
|
| 212 |
/// \sa operator() |
|
| 213 |
|
|
| 212 |
/// Returns the index of the given node. Since this structure is |
|
| 213 |
/// completely static, the nodes can be indexed with integers from |
|
| 214 |
/// the range <tt>[0..nodeNum()-1]</tt>. |
|
| 215 |
/// \sa operator()() |
|
| 216 |
static int index(const Node& node) { return Parent::index(node); }
|
|
| 214 | 217 |
|
| 215 | 218 |
/// \brief Returns the arc connecting the given nodes. |
| 216 | 219 |
/// |
| 217 | 220 |
/// Returns the arc connecting the given nodes. |
| 218 |
Arc arc( |
|
| 221 |
Arc arc(Node u, Node v) const {
|
|
| 219 | 222 |
return Parent::arc(u, v); |
| 220 | 223 |
} |
| 221 | 224 |
|
| 222 | 225 |
/// \brief Number of nodes. |
| 223 | 226 |
int nodeNum() const { return Parent::nodeNum(); }
|
| 224 | 227 |
/// \brief Number of arcs. |
| 225 | 228 |
int arcNum() const { return Parent::arcNum(); }
|
| 226 | 229 |
}; |
| 227 | 230 |
|
| 228 | 231 |
|
| 229 | 232 |
class FullGraphBase {
|
| 230 |
int _node_num; |
|
| 231 |
int _edge_num; |
|
| 232 | 233 |
public: |
| 233 | 234 |
|
| 234 | 235 |
typedef FullGraphBase Graph; |
| 235 | 236 |
|
| 236 | 237 |
class Node; |
| 237 | 238 |
class Arc; |
| 238 | 239 |
class Edge; |
| 239 | 240 |
|
| 240 | 241 |
protected: |
| 241 | 242 |
|
| 243 |
int _node_num; |
|
| 244 |
int _edge_num; |
|
| 245 |
|
|
| 242 | 246 |
FullGraphBase() {}
|
| 243 | 247 |
|
| 244 | 248 |
void construct(int n) { _node_num = n; _edge_num = n * (n - 1) / 2; }
|
| 245 | 249 |
|
| 246 | 250 |
int _uid(int e) const {
|
| 247 | 251 |
int u = e / _node_num; |
| 248 | 252 |
int v = e % _node_num; |
| 249 | 253 |
return u < v ? u : _node_num - 2 - u; |
| 250 | 254 |
} |
| 251 | 255 |
|
| 252 | 256 |
int _vid(int e) const {
|
| 253 | 257 |
int u = e / _node_num; |
| 254 | 258 |
int v = e % _node_num; |
| 255 | 259 |
return u < v ? v : _node_num - 1 - v; |
| 256 | 260 |
} |
| 257 | 261 |
|
| 258 | 262 |
void _uvid(int e, int& u, int& v) const {
|
| 259 | 263 |
u = e / _node_num; |
| 260 | 264 |
v = e % _node_num; |
| 261 | 265 |
if (u >= v) {
|
| 262 | 266 |
u = _node_num - 2 - u; |
| 263 | 267 |
v = _node_num - 1 - v; |
| 264 | 268 |
} |
| 265 | 269 |
} |
| 266 | 270 |
|
| 267 | 271 |
void _stid(int a, int& s, int& t) const {
|
| 268 | 272 |
if ((a & 1) == 1) {
|
| 269 | 273 |
_uvid(a >> 1, s, t); |
| 270 | 274 |
} else {
|
| 271 | 275 |
_uvid(a >> 1, t, s); |
| 272 | 276 |
} |
| 273 | 277 |
} |
| 274 | 278 |
|
| 275 | 279 |
int _eid(int u, int v) const {
|
| 276 | 280 |
if (u < (_node_num - 1) / 2) {
|
| 277 | 281 |
return u * _node_num + v; |
| 278 | 282 |
} else {
|
| 279 | 283 |
return (_node_num - 1 - u) * _node_num - v - 1; |
| 280 | 284 |
} |
| 281 | 285 |
} |
| 282 | 286 |
|
| 283 | 287 |
public: |
| 284 | 288 |
|
| 285 | 289 |
Node operator()(int ix) const { return Node(ix); }
|
| 286 |
int index(const Node& node) |
|
| 290 |
static int index(const Node& node) { return node._id; }
|
|
| 287 | 291 |
|
| 288 | 292 |
Edge edge(const Node& u, const Node& v) const {
|
| 289 | 293 |
if (u._id < v._id) {
|
| 290 | 294 |
return Edge(_eid(u._id, v._id)); |
| 291 | 295 |
} else if (u._id != v._id) {
|
| 292 | 296 |
return Edge(_eid(v._id, u._id)); |
| 293 | 297 |
} else {
|
| 294 | 298 |
return INVALID; |
| 295 | 299 |
} |
| 296 | 300 |
} |
| 297 | 301 |
|
| 298 | 302 |
Arc arc(const Node& s, const Node& t) const {
|
| 299 | 303 |
if (s._id < t._id) {
|
| 300 | 304 |
return Arc((_eid(s._id, t._id) << 1) | 1); |
| 301 | 305 |
} else if (s._id != t._id) {
|
| 302 | 306 |
return Arc(_eid(t._id, s._id) << 1); |
| 303 | 307 |
} else {
|
| 304 | 308 |
return INVALID; |
| 305 | 309 |
} |
| 306 | 310 |
} |
| 307 | 311 |
|
| 308 | 312 |
typedef True NodeNumTag; |
| 309 | 313 |
typedef True ArcNumTag; |
| 310 | 314 |
typedef True EdgeNumTag; |
| 311 | 315 |
|
| 312 | 316 |
int nodeNum() const { return _node_num; }
|
| 313 | 317 |
int arcNum() const { return 2 * _edge_num; }
|
| 314 | 318 |
int edgeNum() const { return _edge_num; }
|
| 315 | 319 |
|
| 316 | 320 |
static int id(Node node) { return node._id; }
|
| 317 | 321 |
static int id(Arc arc) { return arc._id; }
|
| 318 | 322 |
static int id(Edge edge) { return edge._id; }
|
| 319 | 323 |
|
| 320 | 324 |
int maxNodeId() const { return _node_num-1; }
|
| 321 | 325 |
int maxArcId() const { return 2 * _edge_num-1; }
|
| 322 | 326 |
int maxEdgeId() const { return _edge_num-1; }
|
| 323 | 327 |
|
| 324 | 328 |
static Node nodeFromId(int id) { return Node(id);}
|
| 325 | 329 |
static Arc arcFromId(int id) { return Arc(id);}
|
| 326 | 330 |
static Edge edgeFromId(int id) { return Edge(id);}
|
| 327 | 331 |
|
| 328 | 332 |
Node u(Edge edge) const {
|
| 329 | 333 |
return Node(_uid(edge._id)); |
| 330 | 334 |
} |
| 331 | 335 |
|
| 332 | 336 |
Node v(Edge edge) const {
|
| 333 | 337 |
return Node(_vid(edge._id)); |
| 334 | 338 |
} |
| 335 | 339 |
|
| 336 | 340 |
Node source(Arc arc) const {
|
| 337 | 341 |
return Node((arc._id & 1) == 1 ? |
| 338 | 342 |
_uid(arc._id >> 1) : _vid(arc._id >> 1)); |
| 339 | 343 |
} |
| 340 | 344 |
|
| 341 | 345 |
Node target(Arc arc) const {
|
| 342 | 346 |
return Node((arc._id & 1) == 1 ? |
| 343 | 347 |
_vid(arc._id >> 1) : _uid(arc._id >> 1)); |
| 344 | 348 |
} |
| 345 | 349 |
|
| 346 | 350 |
typedef True FindEdgeTag; |
| 347 | 351 |
typedef True FindArcTag; |
| 348 | 352 |
|
| 349 | 353 |
Edge findEdge(Node u, Node v, Edge prev = INVALID) const {
|
| 350 | 354 |
return prev != INVALID ? INVALID : edge(u, v); |
| 351 | 355 |
} |
| 352 | 356 |
|
| 353 | 357 |
Arc findArc(Node s, Node t, Arc prev = INVALID) const {
|
| 354 | 358 |
return prev != INVALID ? INVALID : arc(s, t); |
| 355 | 359 |
} |
| 356 | 360 |
|
| 357 | 361 |
class Node {
|
| 358 | 362 |
friend class FullGraphBase; |
| 359 | 363 |
|
| 360 | 364 |
protected: |
| 361 | 365 |
int _id; |
| 362 | 366 |
Node(int id) : _id(id) {}
|
| 363 | 367 |
public: |
| 364 | 368 |
Node() {}
|
| 365 | 369 |
Node (Invalid) { _id = -1; }
|
| 366 | 370 |
bool operator==(const Node node) const {return _id == node._id;}
|
| 367 | 371 |
bool operator!=(const Node node) const {return _id != node._id;}
|
| 368 | 372 |
bool operator<(const Node node) const {return _id < node._id;}
|
| 369 | 373 |
}; |
| 370 | 374 |
|
| 371 | 375 |
class Edge {
|
| 372 | 376 |
friend class FullGraphBase; |
| 373 | 377 |
friend class Arc; |
| 374 | 378 |
|
| 375 | 379 |
protected: |
| 376 | 380 |
int _id; |
| 377 | 381 |
|
| 378 | 382 |
Edge(int id) : _id(id) {}
|
| 379 | 383 |
|
| 380 | 384 |
public: |
| 381 | 385 |
Edge() { }
|
| 382 | 386 |
Edge (Invalid) { _id = -1; }
|
| 383 | 387 |
|
| 384 | 388 |
bool operator==(const Edge edge) const {return _id == edge._id;}
|
| 385 | 389 |
bool operator!=(const Edge edge) const {return _id != edge._id;}
|
| 386 | 390 |
bool operator<(const Edge edge) const {return _id < edge._id;}
|
| 387 | 391 |
}; |
| 388 | 392 |
|
| 389 | 393 |
class Arc {
|
| 390 | 394 |
friend class FullGraphBase; |
| 391 | 395 |
|
| 392 | 396 |
protected: |
| 393 | 397 |
int _id; |
| 394 | 398 |
|
| 395 | 399 |
Arc(int id) : _id(id) {}
|
| 396 | 400 |
|
| 397 | 401 |
public: |
| 398 | 402 |
Arc() { }
|
| 399 | 403 |
Arc (Invalid) { _id = -1; }
|
| 400 | 404 |
|
| 401 | 405 |
operator Edge() const { return Edge(_id != -1 ? (_id >> 1) : -1); }
|
| 402 | 406 |
|
| 403 | 407 |
bool operator==(const Arc arc) const {return _id == arc._id;}
|
| 404 | 408 |
bool operator!=(const Arc arc) const {return _id != arc._id;}
|
| 405 | 409 |
bool operator<(const Arc arc) const {return _id < arc._id;}
|
| 406 | 410 |
}; |
| 407 | 411 |
|
| 408 | 412 |
static bool direction(Arc arc) {
|
| 409 | 413 |
return (arc._id & 1) == 1; |
| 410 | 414 |
} |
| 411 | 415 |
|
| 412 | 416 |
static Arc direct(Edge edge, bool dir) {
|
| 413 | 417 |
return Arc((edge._id << 1) | (dir ? 1 : 0)); |
| 414 | 418 |
} |
| 415 | 419 |
|
| 416 | 420 |
void first(Node& node) const {
|
| 417 | 421 |
node._id = _node_num - 1; |
| 418 | 422 |
} |
| 419 | 423 |
|
| 420 | 424 |
static void next(Node& node) {
|
| 421 | 425 |
--node._id; |
| 422 | 426 |
} |
| 423 | 427 |
|
| 424 | 428 |
void first(Arc& arc) const {
|
| 425 | 429 |
arc._id = (_edge_num << 1) - 1; |
| 426 | 430 |
} |
| 427 | 431 |
|
| 428 | 432 |
static void next(Arc& arc) {
|
| 429 | 433 |
--arc._id; |
| 430 | 434 |
} |
| 431 | 435 |
|
| 432 | 436 |
void first(Edge& edge) const {
|
| 433 | 437 |
edge._id = _edge_num - 1; |
| 434 | 438 |
} |
| 435 | 439 |
|
| 436 | 440 |
static void next(Edge& edge) {
|
| 437 | 441 |
--edge._id; |
| 438 | 442 |
} |
| 439 | 443 |
|
| 440 | 444 |
void firstOut(Arc& arc, const Node& node) const {
|
| 441 | 445 |
int s = node._id, t = _node_num - 1; |
| 442 | 446 |
if (s < t) {
|
| 443 | 447 |
arc._id = (_eid(s, t) << 1) | 1; |
| 444 | 448 |
} else {
|
| 445 | 449 |
--t; |
| 446 | 450 |
arc._id = (t != -1 ? (_eid(t, s) << 1) : -1); |
| 447 | 451 |
} |
| 448 | 452 |
} |
| 449 | 453 |
|
| 450 | 454 |
void nextOut(Arc& arc) const {
|
| 451 | 455 |
int s, t; |
| 452 | 456 |
_stid(arc._id, s, t); |
| 453 | 457 |
--t; |
| 454 | 458 |
if (s < t) {
|
| 455 | 459 |
arc._id = (_eid(s, t) << 1) | 1; |
| 456 | 460 |
} else {
|
| 457 | 461 |
if (s == t) --t; |
| 458 | 462 |
arc._id = (t != -1 ? (_eid(t, s) << 1) : -1); |
| 459 | 463 |
} |
| 460 | 464 |
} |
| 461 | 465 |
|
| 462 | 466 |
void firstIn(Arc& arc, const Node& node) const {
|
| 463 | 467 |
int s = _node_num - 1, t = node._id; |
| 464 | 468 |
if (s > t) {
|
| 465 | 469 |
arc._id = (_eid(t, s) << 1); |
| 466 | 470 |
} else {
|
| 467 | 471 |
--s; |
| 468 | 472 |
arc._id = (s != -1 ? (_eid(s, t) << 1) | 1 : -1); |
| 469 | 473 |
} |
| 470 | 474 |
} |
| 471 | 475 |
|
| 472 | 476 |
void nextIn(Arc& arc) const {
|
| 473 | 477 |
int s, t; |
| 474 | 478 |
_stid(arc._id, s, t); |
| 475 | 479 |
--s; |
| 476 | 480 |
if (s > t) {
|
| 477 | 481 |
arc._id = (_eid(t, s) << 1); |
| 478 | 482 |
} else {
|
| 479 | 483 |
if (s == t) --s; |
| 480 | 484 |
arc._id = (s != -1 ? (_eid(s, t) << 1) | 1 : -1); |
| 481 | 485 |
} |
| 482 | 486 |
} |
| 483 | 487 |
|
| 484 | 488 |
void firstInc(Edge& edge, bool& dir, const Node& node) const {
|
| 485 | 489 |
int u = node._id, v = _node_num - 1; |
| 486 | 490 |
if (u < v) {
|
| 487 | 491 |
edge._id = _eid(u, v); |
| 488 | 492 |
dir = true; |
| 489 | 493 |
} else {
|
| 490 | 494 |
--v; |
| 491 | 495 |
edge._id = (v != -1 ? _eid(v, u) : -1); |
| 492 | 496 |
dir = false; |
| 493 | 497 |
} |
| 494 | 498 |
} |
| 495 | 499 |
|
| 496 | 500 |
void nextInc(Edge& edge, bool& dir) const {
|
| 497 | 501 |
int u, v; |
| 498 | 502 |
if (dir) {
|
| 499 | 503 |
_uvid(edge._id, u, v); |
| 500 | 504 |
--v; |
| 501 | 505 |
if (u < v) {
|
| 502 | 506 |
edge._id = _eid(u, v); |
| 503 | 507 |
} else {
|
| 504 | 508 |
--v; |
| 505 | 509 |
edge._id = (v != -1 ? _eid(v, u) : -1); |
| 506 | 510 |
dir = false; |
| 507 | 511 |
} |
| 508 | 512 |
} else {
|
| 509 | 513 |
_uvid(edge._id, v, u); |
| 510 | 514 |
--v; |
| 511 | 515 |
edge._id = (v != -1 ? _eid(v, u) : -1); |
| 512 | 516 |
} |
| 513 | 517 |
} |
| 514 | 518 |
|
| 515 | 519 |
}; |
| 516 | 520 |
|
| 517 | 521 |
typedef GraphExtender<FullGraphBase> ExtendedFullGraphBase; |
| 518 | 522 |
|
| 519 | 523 |
/// \ingroup graphs |
| 520 | 524 |
/// |
| 521 | 525 |
/// \brief An undirected full graph class. |
| 522 | 526 |
/// |
| 523 |
/// This is a simple and fast undirected full graph |
|
| 524 |
/// implementation. From each node go edge to each other node, |
|
| 525 |
/// therefore the number of edges in the graph is \f$n(n-1)/2\f$. |
|
| 526 |
/// This graph type is completely static, so you can neither |
|
| 527 |
/// add nor delete either edges or nodes, and it needs constant |
|
| 528 |
/// space in memory. |
|
| 527 |
/// FullGraph is a simple and fast implmenetation of undirected full |
|
| 528 |
/// (complete) graphs. It contains an edge between every distinct pair |
|
| 529 |
/// of nodes, therefore the number of edges is <tt>n(n-1)/2</tt>. |
|
| 530 |
/// This class is completely static and it needs constant memory space. |
|
| 531 |
/// Thus you can neither add nor delete nodes or edges, however |
|
| 532 |
/// the structure can be resized using resize(). |
|
| 529 | 533 |
/// |
| 530 |
/// This class conforms to the \ref concepts::Graph "Graph" concept |
|
| 531 |
/// and it also has an important extra feature that its maps are |
|
| 532 |
/// |
|
| 534 |
/// This type fully conforms to the \ref concepts::Graph "Graph concept". |
|
| 535 |
/// Most of its member functions and nested classes are documented |
|
| 536 |
/// only in the concept class. |
|
| 533 | 537 |
/// |
| 534 |
/// The \c FullGraph and \c FullDigraph classes are very similar, |
|
| 535 |
/// but there are two differences. While the \c FullDigraph class |
|
| 538 |
/// \note FullDigraph and FullGraph classes are very similar, |
|
| 539 |
/// but there are two differences. While FullDigraph |
|
| 536 | 540 |
/// conforms only to the \ref concepts::Digraph "Digraph" concept, |
| 537 | 541 |
/// this class conforms to the \ref concepts::Graph "Graph" concept, |
| 538 |
/// moreover \c FullGraph does not contain a loop arc for each |
|
| 539 |
/// node as \c FullDigraph does. |
|
| 542 |
/// moreover this class does not contain a loop for each |
|
| 543 |
/// node as FullDigraph does. |
|
| 540 | 544 |
/// |
| 541 | 545 |
/// \sa FullDigraph |
| 542 | 546 |
class FullGraph : public ExtendedFullGraphBase {
|
| 547 |
typedef ExtendedFullGraphBase Parent; |
|
| 548 |
|
|
| 543 | 549 |
public: |
| 544 | 550 |
|
| 545 |
typedef ExtendedFullGraphBase Parent; |
|
| 546 |
|
|
| 547 |
/// \brief |
|
| 551 |
/// \brief Default constructor. |
|
| 552 |
/// |
|
| 553 |
/// Default constructor. The number of nodes and edges will be zero. |
|
| 548 | 554 |
FullGraph() { construct(0); }
|
| 549 | 555 |
|
| 550 | 556 |
/// \brief Constructor |
| 551 | 557 |
/// |
| 552 | 558 |
/// Constructor. |
| 553 | 559 |
/// \param n The number of the nodes. |
| 554 | 560 |
FullGraph(int n) { construct(n); }
|
| 555 | 561 |
|
| 556 | 562 |
/// \brief Resizes the graph |
| 557 | 563 |
/// |
| 558 |
/// Resizes the graph. The function will fully destroy and |
|
| 559 |
/// rebuild the graph. This cause that the maps of the graph will |
|
| 564 |
/// This function resizes the graph. It fully destroys and |
|
| 565 |
/// rebuilds the structure, therefore the maps of the graph will be |
|
| 560 | 566 |
/// reallocated automatically and the previous values will be lost. |
| 561 | 567 |
void resize(int n) {
|
| 562 | 568 |
Parent::notifier(Arc()).clear(); |
| 563 | 569 |
Parent::notifier(Edge()).clear(); |
| 564 | 570 |
Parent::notifier(Node()).clear(); |
| 565 | 571 |
construct(n); |
| 566 | 572 |
Parent::notifier(Node()).build(); |
| 567 | 573 |
Parent::notifier(Edge()).build(); |
| 568 | 574 |
Parent::notifier(Arc()).build(); |
| 569 | 575 |
} |
| 570 | 576 |
|
| 571 | 577 |
/// \brief Returns the node with the given index. |
| 572 | 578 |
/// |
| 573 |
/// Returns the node with the given index. Since it is a static |
|
| 574 |
/// graph its nodes can be indexed with integers from the range |
|
| 575 |
/// |
|
| 579 |
/// Returns the node with the given index. Since this structure is |
|
| 580 |
/// completely static, the nodes can be indexed with integers from |
|
| 581 |
/// the range <tt>[0..nodeNum()-1]</tt>. |
|
| 576 | 582 |
/// \sa index() |
| 577 | 583 |
Node operator()(int ix) const { return Parent::operator()(ix); }
|
| 578 | 584 |
|
| 579 | 585 |
/// \brief Returns the index of the given node. |
| 580 | 586 |
/// |
| 581 |
/// Returns the index of the given node. Since it is a static |
|
| 582 |
/// graph its nodes can be indexed with integers from the range |
|
| 583 |
/// <tt>[0..nodeNum()-1]</tt>. |
|
| 584 |
/// \sa operator() |
|
| 585 |
|
|
| 587 |
/// Returns the index of the given node. Since this structure is |
|
| 588 |
/// completely static, the nodes can be indexed with integers from |
|
| 589 |
/// the range <tt>[0..nodeNum()-1]</tt>. |
|
| 590 |
/// \sa operator()() |
|
| 591 |
static int index(const Node& node) { return Parent::index(node); }
|
|
| 586 | 592 |
|
| 587 | 593 |
/// \brief Returns the arc connecting the given nodes. |
| 588 | 594 |
/// |
| 589 | 595 |
/// Returns the arc connecting the given nodes. |
| 590 |
Arc arc( |
|
| 596 |
Arc arc(Node s, Node t) const {
|
|
| 591 | 597 |
return Parent::arc(s, t); |
| 592 | 598 |
} |
| 593 | 599 |
|
| 594 |
/// \brief Returns the edge |
|
| 600 |
/// \brief Returns the edge connecting the given nodes. |
|
| 595 | 601 |
/// |
| 596 |
/// Returns the edge connects the given nodes. |
|
| 597 |
Edge edge(const Node& u, const Node& v) const {
|
|
| 602 |
/// Returns the edge connecting the given nodes. |
|
| 603 |
Edge edge(Node u, Node v) const {
|
|
| 598 | 604 |
return Parent::edge(u, v); |
| 599 | 605 |
} |
| 600 | 606 |
|
| 601 | 607 |
/// \brief Number of nodes. |
| 602 | 608 |
int nodeNum() const { return Parent::nodeNum(); }
|
| 603 | 609 |
/// \brief Number of arcs. |
| 604 | 610 |
int arcNum() const { return Parent::arcNum(); }
|
| 605 | 611 |
/// \brief Number of edges. |
| 606 | 612 |
int edgeNum() const { return Parent::edgeNum(); }
|
| 607 | 613 |
|
| 608 | 614 |
}; |
| 609 | 615 |
|
| 610 | 616 |
|
| 611 | 617 |
} //namespace lemon |
| 612 | 618 |
|
| 613 | 619 |
|
| 614 | 620 |
#endif //LEMON_FULL_GRAPH_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 |
* Copyright (C) 2003- |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
///\file |
| 20 | 20 |
///\brief Implementation of the LEMON GLPK LP and MIP solver interface. |
| 21 | 21 |
|
| 22 | 22 |
#include <lemon/glpk.h> |
| 23 | 23 |
#include <glpk.h> |
| 24 | 24 |
|
| 25 | 25 |
#include <lemon/assert.h> |
| 26 | 26 |
|
| 27 | 27 |
namespace lemon {
|
| 28 | 28 |
|
| 29 | 29 |
// GlpkBase members |
| 30 | 30 |
|
| 31 | 31 |
GlpkBase::GlpkBase() : LpBase() {
|
| 32 | 32 |
lp = glp_create_prob(); |
| 33 | 33 |
glp_create_index(lp); |
| 34 |
messageLevel(MESSAGE_NOTHING); |
|
| 34 | 35 |
} |
| 35 | 36 |
|
| 36 | 37 |
GlpkBase::GlpkBase(const GlpkBase &other) : LpBase() {
|
| 37 | 38 |
lp = glp_create_prob(); |
| 38 | 39 |
glp_copy_prob(lp, other.lp, GLP_ON); |
| 39 | 40 |
glp_create_index(lp); |
| 40 | 41 |
rows = other.rows; |
| 41 | 42 |
cols = other.cols; |
| 43 |
messageLevel(MESSAGE_NOTHING); |
|
| 42 | 44 |
} |
| 43 | 45 |
|
| 44 | 46 |
GlpkBase::~GlpkBase() {
|
| 45 | 47 |
glp_delete_prob(lp); |
| 46 | 48 |
} |
| 47 | 49 |
|
| 48 | 50 |
int GlpkBase::_addCol() {
|
| 49 | 51 |
int i = glp_add_cols(lp, 1); |
| 50 | 52 |
glp_set_col_bnds(lp, i, GLP_FR, 0.0, 0.0); |
| 51 | 53 |
return i; |
| 52 | 54 |
} |
| 53 | 55 |
|
| 54 | 56 |
int GlpkBase::_addRow() {
|
| 55 | 57 |
int i = glp_add_rows(lp, 1); |
| 56 | 58 |
glp_set_row_bnds(lp, i, GLP_FR, 0.0, 0.0); |
| 57 | 59 |
return i; |
| 58 | 60 |
} |
| 59 | 61 |
|
| 62 |
int GlpkBase::_addRow(Value lo, ExprIterator b, |
|
| 63 |
ExprIterator e, Value up) {
|
|
| 64 |
int i = glp_add_rows(lp, 1); |
|
| 65 |
|
|
| 66 |
if (lo == -INF) {
|
|
| 67 |
if (up == INF) {
|
|
| 68 |
glp_set_row_bnds(lp, i, GLP_FR, lo, up); |
|
| 69 |
} else {
|
|
| 70 |
glp_set_row_bnds(lp, i, GLP_UP, lo, up); |
|
| 71 |
} |
|
| 72 |
} else {
|
|
| 73 |
if (up == INF) {
|
|
| 74 |
glp_set_row_bnds(lp, i, GLP_LO, lo, up); |
|
| 75 |
} else if (lo != up) {
|
|
| 76 |
glp_set_row_bnds(lp, i, GLP_DB, lo, up); |
|
| 77 |
} else {
|
|
| 78 |
glp_set_row_bnds(lp, i, GLP_FX, lo, up); |
|
| 79 |
} |
|
| 80 |
} |
|
| 81 |
|
|
| 82 |
std::vector<int> indexes; |
|
| 83 |
std::vector<Value> values; |
|
| 84 |
|
|
| 85 |
indexes.push_back(0); |
|
| 86 |
values.push_back(0); |
|
| 87 |
|
|
| 88 |
for(ExprIterator it = b; it != e; ++it) {
|
|
| 89 |
indexes.push_back(it->first); |
|
| 90 |
values.push_back(it->second); |
|
| 91 |
} |
|
| 92 |
|
|
| 93 |
glp_set_mat_row(lp, i, values.size() - 1, |
|
| 94 |
&indexes.front(), &values.front()); |
|
| 95 |
return i; |
|
| 96 |
} |
|
| 97 |
|
|
| 60 | 98 |
void GlpkBase::_eraseCol(int i) {
|
| 61 | 99 |
int ca[2]; |
| 62 | 100 |
ca[1] = i; |
| 63 | 101 |
glp_del_cols(lp, 1, ca); |
| 64 | 102 |
} |
| 65 | 103 |
|
| 66 | 104 |
void GlpkBase::_eraseRow(int i) {
|
| 67 | 105 |
int ra[2]; |
| 68 | 106 |
ra[1] = i; |
| 69 | 107 |
glp_del_rows(lp, 1, ra); |
| 70 | 108 |
} |
| 71 | 109 |
|
| 72 | 110 |
void GlpkBase::_eraseColId(int i) {
|
| 73 | 111 |
cols.eraseIndex(i); |
| 74 | 112 |
cols.shiftIndices(i); |
| 75 | 113 |
} |
| 76 | 114 |
|
| 77 | 115 |
void GlpkBase::_eraseRowId(int i) {
|
| 78 | 116 |
rows.eraseIndex(i); |
| 79 | 117 |
rows.shiftIndices(i); |
| 80 | 118 |
} |
| 81 | 119 |
|
| 82 | 120 |
void GlpkBase::_getColName(int c, std::string& name) const {
|
| 83 | 121 |
const char *str = glp_get_col_name(lp, c); |
| 84 | 122 |
if (str) name = str; |
| 85 | 123 |
else name.clear(); |
| 86 | 124 |
} |
| 87 | 125 |
|
| 88 | 126 |
void GlpkBase::_setColName(int c, const std::string & name) {
|
| 89 | 127 |
glp_set_col_name(lp, c, const_cast<char*>(name.c_str())); |
| 90 | 128 |
|
| 91 | 129 |
} |
| 92 | 130 |
|
| 93 | 131 |
int GlpkBase::_colByName(const std::string& name) const {
|
| 94 | 132 |
int k = glp_find_col(lp, const_cast<char*>(name.c_str())); |
| 95 | 133 |
return k > 0 ? k : -1; |
| 96 | 134 |
} |
| 97 | 135 |
|
| 98 | 136 |
void GlpkBase::_getRowName(int r, std::string& name) const {
|
| 99 | 137 |
const char *str = glp_get_row_name(lp, r); |
| 100 | 138 |
if (str) name = str; |
| 101 | 139 |
else name.clear(); |
| 102 | 140 |
} |
| 103 | 141 |
|
| 104 | 142 |
void GlpkBase::_setRowName(int r, const std::string & name) {
|
| 105 | 143 |
glp_set_row_name(lp, r, const_cast<char*>(name.c_str())); |
| 106 | 144 |
|
| 107 | 145 |
} |
| 108 | 146 |
|
| 109 | 147 |
int GlpkBase::_rowByName(const std::string& name) const {
|
| 110 | 148 |
int k = glp_find_row(lp, const_cast<char*>(name.c_str())); |
| 111 | 149 |
return k > 0 ? k : -1; |
| 112 | 150 |
} |
| 113 | 151 |
|
| 114 | 152 |
void GlpkBase::_setRowCoeffs(int i, ExprIterator b, ExprIterator e) {
|
| 115 | 153 |
std::vector<int> indexes; |
| 116 | 154 |
std::vector<Value> values; |
| 117 | 155 |
|
| 118 | 156 |
indexes.push_back(0); |
| 119 | 157 |
values.push_back(0); |
| 120 | 158 |
|
| 121 | 159 |
for(ExprIterator it = b; it != e; ++it) {
|
| 122 | 160 |
indexes.push_back(it->first); |
| 123 | 161 |
values.push_back(it->second); |
| 124 | 162 |
} |
| 125 | 163 |
|
| 126 | 164 |
glp_set_mat_row(lp, i, values.size() - 1, |
| 127 | 165 |
&indexes.front(), &values.front()); |
| 128 | 166 |
} |
| 129 | 167 |
|
| 130 | 168 |
void GlpkBase::_getRowCoeffs(int ix, InsertIterator b) const {
|
| 131 | 169 |
int length = glp_get_mat_row(lp, ix, 0, 0); |
| 132 | 170 |
|
| 133 | 171 |
std::vector<int> indexes(length + 1); |
| 134 | 172 |
std::vector<Value> values(length + 1); |
| 135 | 173 |
|
| 136 | 174 |
glp_get_mat_row(lp, ix, &indexes.front(), &values.front()); |
| 137 | 175 |
|
| 138 | 176 |
for (int i = 1; i <= length; ++i) {
|
| 139 | 177 |
*b = std::make_pair(indexes[i], values[i]); |
| 140 | 178 |
++b; |
| 141 | 179 |
} |
| 142 | 180 |
} |
| 143 | 181 |
|
| 144 | 182 |
void GlpkBase::_setColCoeffs(int ix, ExprIterator b, |
| 145 | 183 |
ExprIterator e) {
|
| 146 | 184 |
|
| 147 | 185 |
std::vector<int> indexes; |
| 148 | 186 |
std::vector<Value> values; |
| 149 | 187 |
|
| 150 | 188 |
indexes.push_back(0); |
| 151 | 189 |
values.push_back(0); |
| 152 | 190 |
|
| 153 | 191 |
for(ExprIterator it = b; it != e; ++it) {
|
| 154 | 192 |
indexes.push_back(it->first); |
| 155 | 193 |
values.push_back(it->second); |
| 156 | 194 |
} |
| 157 | 195 |
|
| 158 | 196 |
glp_set_mat_col(lp, ix, values.size() - 1, |
| 159 | 197 |
&indexes.front(), &values.front()); |
| 160 | 198 |
} |
| 161 | 199 |
|
| 162 | 200 |
void GlpkBase::_getColCoeffs(int ix, InsertIterator b) const {
|
| 163 | 201 |
int length = glp_get_mat_col(lp, ix, 0, 0); |
| 164 | 202 |
|
| 165 | 203 |
std::vector<int> indexes(length + 1); |
| 166 | 204 |
std::vector<Value> values(length + 1); |
| 167 | 205 |
|
| 168 | 206 |
glp_get_mat_col(lp, ix, &indexes.front(), &values.front()); |
| 169 | 207 |
|
| 170 | 208 |
for (int i = 1; i <= length; ++i) {
|
| 171 | 209 |
*b = std::make_pair(indexes[i], values[i]); |
| 172 | 210 |
++b; |
| 173 | 211 |
} |
| 174 | 212 |
} |
| 175 | 213 |
|
| 176 | 214 |
void GlpkBase::_setCoeff(int ix, int jx, Value value) {
|
| 177 | 215 |
|
| 178 | 216 |
if (glp_get_num_cols(lp) < glp_get_num_rows(lp)) {
|
| 179 | 217 |
|
| 180 | 218 |
int length = glp_get_mat_row(lp, ix, 0, 0); |
| 181 | 219 |
|
| 182 | 220 |
std::vector<int> indexes(length + 2); |
| 183 | 221 |
std::vector<Value> values(length + 2); |
| 184 | 222 |
|
| 185 | 223 |
glp_get_mat_row(lp, ix, &indexes.front(), &values.front()); |
| 186 | 224 |
|
| 187 | 225 |
//The following code does not suppose that the elements of the |
| 188 | 226 |
//array indexes are sorted |
| 189 | 227 |
bool found = false; |
| 190 | 228 |
for (int i = 1; i <= length; ++i) {
|
| 191 | 229 |
if (indexes[i] == jx) {
|
| 192 | 230 |
found = true; |
| 193 | 231 |
values[i] = value; |
| 194 | 232 |
break; |
| 195 | 233 |
} |
| 196 | 234 |
} |
| 197 | 235 |
if (!found) {
|
| 198 | 236 |
++length; |
| 199 | 237 |
indexes[length] = jx; |
| 200 | 238 |
values[length] = value; |
| 201 | 239 |
} |
| 202 | 240 |
|
| 203 | 241 |
glp_set_mat_row(lp, ix, length, &indexes.front(), &values.front()); |
| 204 | 242 |
|
| 205 | 243 |
} else {
|
| 206 | 244 |
|
| 207 | 245 |
int length = glp_get_mat_col(lp, jx, 0, 0); |
| 208 | 246 |
|
| 209 | 247 |
std::vector<int> indexes(length + 2); |
| 210 | 248 |
std::vector<Value> values(length + 2); |
| 211 | 249 |
|
| 212 | 250 |
glp_get_mat_col(lp, jx, &indexes.front(), &values.front()); |
| 213 | 251 |
|
| 214 | 252 |
//The following code does not suppose that the elements of the |
| 215 | 253 |
//array indexes are sorted |
| 216 | 254 |
bool found = false; |
| 217 | 255 |
for (int i = 1; i <= length; ++i) {
|
| 218 | 256 |
if (indexes[i] == ix) {
|
| 219 | 257 |
found = true; |
| 220 | 258 |
values[i] = value; |
| 221 | 259 |
break; |
| 222 | 260 |
} |
| 223 | 261 |
} |
| 224 | 262 |
if (!found) {
|
| 225 | 263 |
++length; |
| 226 | 264 |
indexes[length] = ix; |
| 227 | 265 |
values[length] = value; |
| 228 | 266 |
} |
| 229 | 267 |
|
| 230 | 268 |
glp_set_mat_col(lp, jx, length, &indexes.front(), &values.front()); |
| 231 | 269 |
} |
| 232 | 270 |
|
| 233 | 271 |
} |
| 234 | 272 |
|
| 235 | 273 |
GlpkBase::Value GlpkBase::_getCoeff(int ix, int jx) const {
|
| 236 | 274 |
|
| 237 | 275 |
int length = glp_get_mat_row(lp, ix, 0, 0); |
| 238 | 276 |
|
| 239 | 277 |
std::vector<int> indexes(length + 1); |
| 240 | 278 |
std::vector<Value> values(length + 1); |
| 241 | 279 |
|
| 242 | 280 |
glp_get_mat_row(lp, ix, &indexes.front(), &values.front()); |
| 243 | 281 |
|
| 244 | 282 |
for (int i = 1; i <= length; ++i) {
|
| 245 | 283 |
if (indexes[i] == jx) {
|
| 246 | 284 |
return values[i]; |
| 247 | 285 |
} |
| 248 | 286 |
} |
| 249 | 287 |
|
| 250 | 288 |
return 0; |
| 251 | 289 |
} |
| 252 | 290 |
|
| 253 | 291 |
void GlpkBase::_setColLowerBound(int i, Value lo) {
|
| 254 | 292 |
LEMON_ASSERT(lo != INF, "Invalid bound"); |
| 255 | 293 |
|
| 256 | 294 |
int b = glp_get_col_type(lp, i); |
| 257 | 295 |
double up = glp_get_col_ub(lp, i); |
| 258 | 296 |
if (lo == -INF) {
|
| 259 | 297 |
switch (b) {
|
| 260 | 298 |
case GLP_FR: |
| 261 | 299 |
case GLP_LO: |
| 262 | 300 |
glp_set_col_bnds(lp, i, GLP_FR, lo, up); |
| 263 | 301 |
break; |
| 264 | 302 |
case GLP_UP: |
| 265 | 303 |
break; |
| 266 | 304 |
case GLP_DB: |
| 267 | 305 |
case GLP_FX: |
| 268 | 306 |
glp_set_col_bnds(lp, i, GLP_UP, lo, up); |
| 269 | 307 |
break; |
| 270 | 308 |
default: |
| 271 | 309 |
break; |
| 272 | 310 |
} |
| 273 | 311 |
} else {
|
| 274 | 312 |
switch (b) {
|
| 275 | 313 |
case GLP_FR: |
| 276 | 314 |
case GLP_LO: |
| 277 | 315 |
glp_set_col_bnds(lp, i, GLP_LO, lo, up); |
| 278 | 316 |
break; |
| 279 | 317 |
case GLP_UP: |
| 280 | 318 |
case GLP_DB: |
| 281 | 319 |
case GLP_FX: |
| 282 | 320 |
if (lo == up) |
| 283 | 321 |
glp_set_col_bnds(lp, i, GLP_FX, lo, up); |
| 284 | 322 |
else |
| 285 | 323 |
glp_set_col_bnds(lp, i, GLP_DB, lo, up); |
| 286 | 324 |
break; |
| 287 | 325 |
default: |
| 288 | 326 |
break; |
| 289 | 327 |
} |
| 290 | 328 |
} |
| 291 | 329 |
} |
| 292 | 330 |
|
| 293 | 331 |
GlpkBase::Value GlpkBase::_getColLowerBound(int i) const {
|
| 294 | 332 |
int b = glp_get_col_type(lp, i); |
| 295 | 333 |
switch (b) {
|
| 296 | 334 |
case GLP_LO: |
| 297 | 335 |
case GLP_DB: |
| 298 | 336 |
case GLP_FX: |
| 299 | 337 |
return glp_get_col_lb(lp, i); |
| 300 | 338 |
default: |
| 301 | 339 |
return -INF; |
| 302 | 340 |
} |
| 303 | 341 |
} |
| 304 | 342 |
|
| 305 | 343 |
void GlpkBase::_setColUpperBound(int i, Value up) {
|
| 306 | 344 |
LEMON_ASSERT(up != -INF, "Invalid bound"); |
| 307 | 345 |
|
| 308 | 346 |
int b = glp_get_col_type(lp, i); |
| 309 | 347 |
double lo = glp_get_col_lb(lp, i); |
| 310 | 348 |
if (up == INF) {
|
| 311 | 349 |
switch (b) {
|
| 312 | 350 |
case GLP_FR: |
| 313 | 351 |
case GLP_LO: |
| 314 | 352 |
break; |
| 315 | 353 |
case GLP_UP: |
| 316 | 354 |
glp_set_col_bnds(lp, i, GLP_FR, lo, up); |
| 317 | 355 |
break; |
| 318 | 356 |
case GLP_DB: |
| 319 | 357 |
case GLP_FX: |
| 320 | 358 |
glp_set_col_bnds(lp, i, GLP_LO, lo, up); |
| 321 | 359 |
break; |
| 322 | 360 |
default: |
| 323 | 361 |
break; |
| 324 | 362 |
} |
| 325 | 363 |
} else {
|
| 326 | 364 |
switch (b) {
|
| 327 | 365 |
case GLP_FR: |
| 328 | 366 |
glp_set_col_bnds(lp, i, GLP_UP, lo, up); |
| 329 | 367 |
break; |
| 330 | 368 |
case GLP_UP: |
| 331 | 369 |
glp_set_col_bnds(lp, i, GLP_UP, lo, up); |
| 332 | 370 |
break; |
| 333 | 371 |
case GLP_LO: |
| 334 | 372 |
case GLP_DB: |
| 335 | 373 |
case GLP_FX: |
| 336 | 374 |
if (lo == up) |
| 337 | 375 |
glp_set_col_bnds(lp, i, GLP_FX, lo, up); |
| 338 | 376 |
else |
| 339 | 377 |
glp_set_col_bnds(lp, i, GLP_DB, lo, up); |
| 340 | 378 |
break; |
| 341 | 379 |
default: |
| 342 | 380 |
break; |
| 343 | 381 |
} |
| 344 | 382 |
} |
| 345 | 383 |
|
| 346 | 384 |
} |
| 347 | 385 |
|
| 348 | 386 |
GlpkBase::Value GlpkBase::_getColUpperBound(int i) const {
|
| 349 | 387 |
int b = glp_get_col_type(lp, i); |
| 350 | 388 |
switch (b) {
|
| 351 | 389 |
case GLP_UP: |
| 352 | 390 |
case GLP_DB: |
| 353 | 391 |
case GLP_FX: |
| 354 | 392 |
return glp_get_col_ub(lp, i); |
| 355 | 393 |
default: |
| 356 | 394 |
return INF; |
| 357 | 395 |
} |
| 358 | 396 |
} |
| 359 | 397 |
|
| 360 | 398 |
void GlpkBase::_setRowLowerBound(int i, Value lo) {
|
| 361 | 399 |
LEMON_ASSERT(lo != INF, "Invalid bound"); |
| 362 | 400 |
|
| 363 | 401 |
int b = glp_get_row_type(lp, i); |
| 364 | 402 |
double up = glp_get_row_ub(lp, i); |
| 365 | 403 |
if (lo == -INF) {
|
| 366 | 404 |
switch (b) {
|
| 367 | 405 |
case GLP_FR: |
| 368 | 406 |
case GLP_LO: |
| 369 | 407 |
glp_set_row_bnds(lp, i, GLP_FR, lo, up); |
| 370 | 408 |
break; |
| 371 | 409 |
case GLP_UP: |
| 372 | 410 |
break; |
| 373 | 411 |
case GLP_DB: |
| 374 | 412 |
case GLP_FX: |
| 375 | 413 |
glp_set_row_bnds(lp, i, GLP_UP, lo, up); |
| 376 | 414 |
break; |
| 377 | 415 |
default: |
| 378 | 416 |
break; |
| 379 | 417 |
} |
| 380 | 418 |
} else {
|
| 381 | 419 |
switch (b) {
|
| 382 | 420 |
case GLP_FR: |
| 383 | 421 |
case GLP_LO: |
| 384 | 422 |
glp_set_row_bnds(lp, i, GLP_LO, lo, up); |
| 385 | 423 |
break; |
| 386 | 424 |
case GLP_UP: |
| 387 | 425 |
case GLP_DB: |
| 388 | 426 |
case GLP_FX: |
| 389 | 427 |
if (lo == up) |
| 390 | 428 |
glp_set_row_bnds(lp, i, GLP_FX, lo, up); |
| 391 | 429 |
else |
| 392 | 430 |
glp_set_row_bnds(lp, i, GLP_DB, lo, up); |
| 393 | 431 |
break; |
| 394 | 432 |
default: |
| 395 | 433 |
break; |
| 396 | 434 |
} |
| 397 | 435 |
} |
| 398 | 436 |
|
| 399 | 437 |
} |
| 400 | 438 |
|
| 401 | 439 |
GlpkBase::Value GlpkBase::_getRowLowerBound(int i) const {
|
| 402 | 440 |
int b = glp_get_row_type(lp, i); |
| 403 | 441 |
switch (b) {
|
| 404 | 442 |
case GLP_LO: |
| 405 | 443 |
case GLP_DB: |
| 406 | 444 |
case GLP_FX: |
| 407 | 445 |
return glp_get_row_lb(lp, i); |
| 408 | 446 |
default: |
| 409 | 447 |
return -INF; |
| 410 | 448 |
} |
| 411 | 449 |
} |
| 412 | 450 |
|
| 413 | 451 |
void GlpkBase::_setRowUpperBound(int i, Value up) {
|
| 414 | 452 |
LEMON_ASSERT(up != -INF, "Invalid bound"); |
| 415 | 453 |
|
| 416 | 454 |
int b = glp_get_row_type(lp, i); |
| 417 | 455 |
double lo = glp_get_row_lb(lp, i); |
| 418 | 456 |
if (up == INF) {
|
| 419 | 457 |
switch (b) {
|
| 420 | 458 |
case GLP_FR: |
| 421 | 459 |
case GLP_LO: |
| 422 | 460 |
break; |
| 423 | 461 |
case GLP_UP: |
| 424 | 462 |
glp_set_row_bnds(lp, i, GLP_FR, lo, up); |
| 425 | 463 |
break; |
| 426 | 464 |
case GLP_DB: |
| 427 | 465 |
case GLP_FX: |
| 428 | 466 |
glp_set_row_bnds(lp, i, GLP_LO, lo, up); |
| 429 | 467 |
break; |
| 430 | 468 |
default: |
| 431 | 469 |
break; |
| 432 | 470 |
} |
| 433 | 471 |
} else {
|
| 434 | 472 |
switch (b) {
|
| 435 | 473 |
case GLP_FR: |
| 436 | 474 |
glp_set_row_bnds(lp, i, GLP_UP, lo, up); |
| 437 | 475 |
break; |
| 438 | 476 |
case GLP_UP: |
| 439 | 477 |
glp_set_row_bnds(lp, i, GLP_UP, lo, up); |
| 440 | 478 |
break; |
| 441 | 479 |
case GLP_LO: |
| 442 | 480 |
case GLP_DB: |
| 443 | 481 |
case GLP_FX: |
| 444 | 482 |
if (lo == up) |
| 445 | 483 |
glp_set_row_bnds(lp, i, GLP_FX, lo, up); |
| 446 | 484 |
else |
| 447 | 485 |
glp_set_row_bnds(lp, i, GLP_DB, lo, up); |
| 448 | 486 |
break; |
| 449 | 487 |
default: |
| 450 | 488 |
break; |
| 451 | 489 |
} |
| 452 | 490 |
} |
| 453 | 491 |
} |
| 454 | 492 |
|
| 455 | 493 |
GlpkBase::Value GlpkBase::_getRowUpperBound(int i) const {
|
| 456 | 494 |
int b = glp_get_row_type(lp, i); |
| 457 | 495 |
switch (b) {
|
| 458 | 496 |
case GLP_UP: |
| 459 | 497 |
case GLP_DB: |
| 460 | 498 |
case GLP_FX: |
| 461 | 499 |
return glp_get_row_ub(lp, i); |
| 462 | 500 |
default: |
| 463 | 501 |
return INF; |
| 464 | 502 |
} |
| 465 | 503 |
} |
| 466 | 504 |
|
| 467 | 505 |
void GlpkBase::_setObjCoeffs(ExprIterator b, ExprIterator e) {
|
| 468 | 506 |
for (int i = 1; i <= glp_get_num_cols(lp); ++i) {
|
| 469 | 507 |
glp_set_obj_coef(lp, i, 0.0); |
| 470 | 508 |
} |
| 471 | 509 |
for (ExprIterator it = b; it != e; ++it) {
|
| 472 | 510 |
glp_set_obj_coef(lp, it->first, it->second); |
| 473 | 511 |
} |
| 474 | 512 |
} |
| 475 | 513 |
|
| 476 | 514 |
void GlpkBase::_getObjCoeffs(InsertIterator b) const {
|
| 477 | 515 |
for (int i = 1; i <= glp_get_num_cols(lp); ++i) {
|
| 478 | 516 |
Value val = glp_get_obj_coef(lp, i); |
| 479 | 517 |
if (val != 0.0) {
|
| 480 | 518 |
*b = std::make_pair(i, val); |
| 481 | 519 |
++b; |
| 482 | 520 |
} |
| 483 | 521 |
} |
| 484 | 522 |
} |
| 485 | 523 |
|
| 486 | 524 |
void GlpkBase::_setObjCoeff(int i, Value obj_coef) {
|
| 487 | 525 |
//i = 0 means the constant term (shift) |
| 488 | 526 |
glp_set_obj_coef(lp, i, obj_coef); |
| 489 | 527 |
} |
| 490 | 528 |
|
| 491 | 529 |
GlpkBase::Value GlpkBase::_getObjCoeff(int i) const {
|
| 492 | 530 |
//i = 0 means the constant term (shift) |
| 493 | 531 |
return glp_get_obj_coef(lp, i); |
| 494 | 532 |
} |
| 495 | 533 |
|
| 496 | 534 |
void GlpkBase::_setSense(GlpkBase::Sense sense) {
|
| 497 | 535 |
switch (sense) {
|
| 498 | 536 |
case MIN: |
| 499 | 537 |
glp_set_obj_dir(lp, GLP_MIN); |
| 500 | 538 |
break; |
| 501 | 539 |
case MAX: |
| 502 | 540 |
glp_set_obj_dir(lp, GLP_MAX); |
| 503 | 541 |
break; |
| 504 | 542 |
} |
| 505 | 543 |
} |
| 506 | 544 |
|
| 507 | 545 |
GlpkBase::Sense GlpkBase::_getSense() const {
|
| 508 | 546 |
switch(glp_get_obj_dir(lp)) {
|
| 509 | 547 |
case GLP_MIN: |
| 510 | 548 |
return MIN; |
| 511 | 549 |
case GLP_MAX: |
| 512 | 550 |
return MAX; |
| 513 | 551 |
default: |
| 514 | 552 |
LEMON_ASSERT(false, "Wrong sense"); |
| 515 | 553 |
return GlpkBase::Sense(); |
| 516 | 554 |
} |
| 517 | 555 |
} |
| 518 | 556 |
|
| 519 | 557 |
void GlpkBase::_clear() {
|
| 520 | 558 |
glp_erase_prob(lp); |
| 521 | 559 |
rows.clear(); |
| 522 | 560 |
cols.clear(); |
| 523 | 561 |
} |
| 524 | 562 |
|
| 563 |
void GlpkBase::freeEnv() {
|
|
| 564 |
glp_free_env(); |
|
| 565 |
} |
|
| 566 |
|
|
| 567 |
void GlpkBase::_messageLevel(MessageLevel level) {
|
|
| 568 |
switch (level) {
|
|
| 569 |
case MESSAGE_NOTHING: |
|
| 570 |
_message_level = GLP_MSG_OFF; |
|
| 571 |
break; |
|
| 572 |
case MESSAGE_ERROR: |
|
| 573 |
_message_level = GLP_MSG_ERR; |
|
| 574 |
break; |
|
| 575 |
case MESSAGE_WARNING: |
|
| 576 |
_message_level = GLP_MSG_ERR; |
|
| 577 |
break; |
|
| 578 |
case MESSAGE_NORMAL: |
|
| 579 |
_message_level = GLP_MSG_ON; |
|
| 580 |
break; |
|
| 581 |
case MESSAGE_VERBOSE: |
|
| 582 |
_message_level = GLP_MSG_ALL; |
|
| 583 |
break; |
|
| 584 |
} |
|
| 585 |
} |
|
| 586 |
|
|
| 587 |
GlpkBase::FreeEnvHelper GlpkBase::freeEnvHelper; |
|
| 588 |
|
|
| 525 | 589 |
// GlpkLp members |
| 526 | 590 |
|
| 527 | 591 |
GlpkLp::GlpkLp() |
| 528 |
: LpBase(), GlpkBase(), LpSolver() {
|
|
| 529 |
messageLevel(MESSAGE_NO_OUTPUT); |
|
| 592 |
: LpBase(), LpSolver(), GlpkBase() {
|
|
| 593 |
presolver(false); |
|
| 530 | 594 |
} |
| 531 | 595 |
|
| 532 | 596 |
GlpkLp::GlpkLp(const GlpkLp& other) |
| 533 |
: LpBase(other), GlpkBase(other), LpSolver(other) {
|
|
| 534 |
messageLevel(MESSAGE_NO_OUTPUT); |
|
| 597 |
: LpBase(other), LpSolver(other), GlpkBase(other) {
|
|
| 598 |
presolver(false); |
|
| 535 | 599 |
} |
| 536 | 600 |
|
| 537 |
GlpkLp* GlpkLp::_newSolver() const { return new GlpkLp; }
|
|
| 538 |
GlpkLp* GlpkLp::_cloneSolver() const { return new GlpkLp(*this); }
|
|
| 601 |
GlpkLp* GlpkLp::newSolver() const { return new GlpkLp; }
|
|
| 602 |
GlpkLp* GlpkLp::cloneSolver() const { return new GlpkLp(*this); }
|
|
| 539 | 603 |
|
| 540 | 604 |
const char* GlpkLp::_solverName() const { return "GlpkLp"; }
|
| 541 | 605 |
|
| 542 | 606 |
void GlpkLp::_clear_temporals() {
|
| 543 | 607 |
_primal_ray.clear(); |
| 544 | 608 |
_dual_ray.clear(); |
| 545 | 609 |
} |
| 546 | 610 |
|
| 547 | 611 |
GlpkLp::SolveExitStatus GlpkLp::_solve() {
|
| 548 | 612 |
return solvePrimal(); |
| 549 | 613 |
} |
| 550 | 614 |
|
| 551 | 615 |
GlpkLp::SolveExitStatus GlpkLp::solvePrimal() {
|
| 552 | 616 |
_clear_temporals(); |
| 553 | 617 |
|
| 554 | 618 |
glp_smcp smcp; |
| 555 | 619 |
glp_init_smcp(&smcp); |
| 556 | 620 |
|
| 557 |
switch (_message_level) {
|
|
| 558 |
case MESSAGE_NO_OUTPUT: |
|
| 559 |
|
|
| 621 |
smcp.msg_lev = _message_level; |
|
| 622 |
smcp.presolve = _presolve; |
|
| 623 |
|
|
| 624 |
// If the basis is not valid we get an error return value. |
|
| 625 |
// In this case we can try to create a new basis. |
|
| 626 |
switch (glp_simplex(lp, &smcp)) {
|
|
| 627 |
case 0: |
|
| 560 | 628 |
break; |
| 561 |
case MESSAGE_ERROR_MESSAGE: |
|
| 562 |
smcp.msg_lev = GLP_MSG_ERR; |
|
| 629 |
case GLP_EBADB: |
|
| 630 |
case GLP_ESING: |
|
| 631 |
case GLP_ECOND: |
|
| 632 |
glp_term_out(false); |
|
| 633 |
glp_adv_basis(lp, 0); |
|
| 634 |
glp_term_out(true); |
|
| 635 |
if (glp_simplex(lp, &smcp) != 0) return UNSOLVED; |
|
| 563 | 636 |
break; |
| 564 |
case MESSAGE_NORMAL_OUTPUT: |
|
| 565 |
smcp.msg_lev = GLP_MSG_ON; |
|
| 566 |
break; |
|
| 567 |
case MESSAGE_FULL_OUTPUT: |
|
| 568 |
smcp.msg_lev = GLP_MSG_ALL; |
|
| 569 |
break; |
|
| 637 |
default: |
|
| 638 |
return UNSOLVED; |
|
| 570 | 639 |
} |
| 571 | 640 |
|
| 572 |
if (glp_simplex(lp, &smcp) != 0) return UNSOLVED; |
|
| 573 | 641 |
return SOLVED; |
| 574 | 642 |
} |
| 575 | 643 |
|
| 576 | 644 |
GlpkLp::SolveExitStatus GlpkLp::solveDual() {
|
| 577 | 645 |
_clear_temporals(); |
| 578 | 646 |
|
| 579 | 647 |
glp_smcp smcp; |
| 580 | 648 |
glp_init_smcp(&smcp); |
| 581 | 649 |
|
| 582 |
switch (_message_level) {
|
|
| 583 |
case MESSAGE_NO_OUTPUT: |
|
| 584 |
|
|
| 650 |
smcp.msg_lev = _message_level; |
|
| 651 |
smcp.meth = GLP_DUAL; |
|
| 652 |
smcp.presolve = _presolve; |
|
| 653 |
|
|
| 654 |
// If the basis is not valid we get an error return value. |
|
| 655 |
// In this case we can try to create a new basis. |
|
| 656 |
switch (glp_simplex(lp, &smcp)) {
|
|
| 657 |
case 0: |
|
| 585 | 658 |
break; |
| 586 |
case MESSAGE_ERROR_MESSAGE: |
|
| 587 |
smcp.msg_lev = GLP_MSG_ERR; |
|
| 659 |
case GLP_EBADB: |
|
| 660 |
case GLP_ESING: |
|
| 661 |
case GLP_ECOND: |
|
| 662 |
glp_term_out(false); |
|
| 663 |
glp_adv_basis(lp, 0); |
|
| 664 |
glp_term_out(true); |
|
| 665 |
if (glp_simplex(lp, &smcp) != 0) return UNSOLVED; |
|
| 588 | 666 |
break; |
| 589 |
case MESSAGE_NORMAL_OUTPUT: |
|
| 590 |
smcp.msg_lev = GLP_MSG_ON; |
|
| 591 |
break; |
|
| 592 |
case MESSAGE_FULL_OUTPUT: |
|
| 593 |
smcp.msg_lev = GLP_MSG_ALL; |
|
| 594 |
break; |
|
| 667 |
default: |
|
| 668 |
return UNSOLVED; |
|
| 595 | 669 |
} |
| 596 |
smcp.meth = GLP_DUAL; |
|
| 597 |
|
|
| 598 |
if (glp_simplex(lp, &smcp) != 0) return UNSOLVED; |
|
| 599 | 670 |
return SOLVED; |
| 600 | 671 |
} |
| 601 | 672 |
|
| 602 | 673 |
GlpkLp::Value GlpkLp::_getPrimal(int i) const {
|
| 603 | 674 |
return glp_get_col_prim(lp, i); |
| 604 | 675 |
} |
| 605 | 676 |
|
| 606 | 677 |
GlpkLp::Value GlpkLp::_getDual(int i) const {
|
| 607 | 678 |
return glp_get_row_dual(lp, i); |
| 608 | 679 |
} |
| 609 | 680 |
|
| 610 | 681 |
GlpkLp::Value GlpkLp::_getPrimalValue() const {
|
| 611 | 682 |
return glp_get_obj_val(lp); |
| 612 | 683 |
} |
| 613 | 684 |
|
| 614 | 685 |
GlpkLp::VarStatus GlpkLp::_getColStatus(int i) const {
|
| 615 | 686 |
switch (glp_get_col_stat(lp, i)) {
|
| 616 | 687 |
case GLP_BS: |
| 617 | 688 |
return BASIC; |
| 618 | 689 |
case GLP_UP: |
| 619 | 690 |
return UPPER; |
| 620 | 691 |
case GLP_LO: |
| 621 | 692 |
return LOWER; |
| 622 | 693 |
case GLP_NF: |
| 623 | 694 |
return FREE; |
| 624 | 695 |
case GLP_NS: |
| 625 | 696 |
return FIXED; |
| 626 | 697 |
default: |
| 627 | 698 |
LEMON_ASSERT(false, "Wrong column status"); |
| 628 | 699 |
return GlpkLp::VarStatus(); |
| 629 | 700 |
} |
| 630 | 701 |
} |
| 631 | 702 |
|
| 632 | 703 |
GlpkLp::VarStatus GlpkLp::_getRowStatus(int i) const {
|
| 633 | 704 |
switch (glp_get_row_stat(lp, i)) {
|
| 634 | 705 |
case GLP_BS: |
| 635 | 706 |
return BASIC; |
| 636 | 707 |
case GLP_UP: |
| 637 | 708 |
return UPPER; |
| 638 | 709 |
case GLP_LO: |
| 639 | 710 |
return LOWER; |
| 640 | 711 |
case GLP_NF: |
| 641 | 712 |
return FREE; |
| 642 | 713 |
case GLP_NS: |
| 643 | 714 |
return FIXED; |
| 644 | 715 |
default: |
| 645 | 716 |
LEMON_ASSERT(false, "Wrong row status"); |
| 646 | 717 |
return GlpkLp::VarStatus(); |
| 647 | 718 |
} |
| 648 | 719 |
} |
| 649 | 720 |
|
| 650 | 721 |
GlpkLp::Value GlpkLp::_getPrimalRay(int i) const {
|
| 651 | 722 |
if (_primal_ray.empty()) {
|
| 652 | 723 |
int row_num = glp_get_num_rows(lp); |
| 653 | 724 |
int col_num = glp_get_num_cols(lp); |
| 654 | 725 |
|
| 655 | 726 |
_primal_ray.resize(col_num + 1, 0.0); |
| 656 | 727 |
|
| 657 | 728 |
int index = glp_get_unbnd_ray(lp); |
| 658 | 729 |
if (index != 0) {
|
| 659 | 730 |
// The primal ray is found in primal simplex second phase |
| 660 | 731 |
LEMON_ASSERT((index <= row_num ? glp_get_row_stat(lp, index) : |
| 661 | 732 |
glp_get_col_stat(lp, index - row_num)) != GLP_BS, |
| 662 | 733 |
"Wrong primal ray"); |
| 663 | 734 |
|
| 664 | 735 |
bool negate = glp_get_obj_dir(lp) == GLP_MAX; |
| 665 | 736 |
|
| 666 | 737 |
if (index > row_num) {
|
| 667 | 738 |
_primal_ray[index - row_num] = 1.0; |
| 668 | 739 |
if (glp_get_col_dual(lp, index - row_num) > 0) {
|
| 669 | 740 |
negate = !negate; |
| 670 | 741 |
} |
| 671 | 742 |
} else {
|
| 672 | 743 |
if (glp_get_row_dual(lp, index) > 0) {
|
| 673 | 744 |
negate = !negate; |
| 674 | 745 |
} |
| 675 | 746 |
} |
| 676 | 747 |
|
| 677 | 748 |
std::vector<int> ray_indexes(row_num + 1); |
| 678 | 749 |
std::vector<Value> ray_values(row_num + 1); |
| 679 | 750 |
int ray_length = glp_eval_tab_col(lp, index, &ray_indexes.front(), |
| 680 | 751 |
&ray_values.front()); |
| 681 | 752 |
|
| 682 | 753 |
for (int i = 1; i <= ray_length; ++i) {
|
| 683 | 754 |
if (ray_indexes[i] > row_num) {
|
| 684 | 755 |
_primal_ray[ray_indexes[i] - row_num] = ray_values[i]; |
| 685 | 756 |
} |
| 686 | 757 |
} |
| 687 | 758 |
|
| 688 | 759 |
if (negate) {
|
| 689 | 760 |
for (int i = 1; i <= col_num; ++i) {
|
| 690 | 761 |
_primal_ray[i] = - _primal_ray[i]; |
| 691 | 762 |
} |
| 692 | 763 |
} |
| 693 | 764 |
} else {
|
| 694 | 765 |
for (int i = 1; i <= col_num; ++i) {
|
| 695 | 766 |
_primal_ray[i] = glp_get_col_prim(lp, i); |
| 696 | 767 |
} |
| 697 | 768 |
} |
| 698 | 769 |
} |
| 699 | 770 |
return _primal_ray[i]; |
| 700 | 771 |
} |
| 701 | 772 |
|
| 702 | 773 |
GlpkLp::Value GlpkLp::_getDualRay(int i) const {
|
| 703 | 774 |
if (_dual_ray.empty()) {
|
| 704 | 775 |
int row_num = glp_get_num_rows(lp); |
| 705 | 776 |
|
| 706 | 777 |
_dual_ray.resize(row_num + 1, 0.0); |
| 707 | 778 |
|
| 708 | 779 |
int index = glp_get_unbnd_ray(lp); |
| 709 | 780 |
if (index != 0) {
|
| 710 | 781 |
// The dual ray is found in dual simplex second phase |
| 711 | 782 |
LEMON_ASSERT((index <= row_num ? glp_get_row_stat(lp, index) : |
| 712 | 783 |
glp_get_col_stat(lp, index - row_num)) == GLP_BS, |
| 713 | 784 |
|
| 714 | 785 |
"Wrong dual ray"); |
| 715 | 786 |
|
| 716 | 787 |
int idx; |
| 717 | 788 |
bool negate = false; |
| 718 | 789 |
|
| 719 | 790 |
if (index > row_num) {
|
| 720 | 791 |
idx = glp_get_col_bind(lp, index - row_num); |
| 721 | 792 |
if (glp_get_col_prim(lp, index - row_num) > |
| 722 | 793 |
glp_get_col_ub(lp, index - row_num)) {
|
| 723 | 794 |
negate = true; |
| 724 | 795 |
} |
| 725 | 796 |
} else {
|
| 726 | 797 |
idx = glp_get_row_bind(lp, index); |
| 727 | 798 |
if (glp_get_row_prim(lp, index) > glp_get_row_ub(lp, index)) {
|
| 728 | 799 |
negate = true; |
| 729 | 800 |
} |
| 730 | 801 |
} |
| 731 | 802 |
|
| 732 | 803 |
_dual_ray[idx] = negate ? - 1.0 : 1.0; |
| 733 | 804 |
|
| 734 | 805 |
glp_btran(lp, &_dual_ray.front()); |
| 735 | 806 |
} else {
|
| 736 | 807 |
double eps = 1e-7; |
| 737 | 808 |
// The dual ray is found in primal simplex first phase |
| 738 | 809 |
// We assume that the glpk minimizes the slack to get feasible solution |
| 739 | 810 |
for (int i = 1; i <= row_num; ++i) {
|
| 740 | 811 |
int index = glp_get_bhead(lp, i); |
| 741 | 812 |
if (index <= row_num) {
|
| 742 | 813 |
double res = glp_get_row_prim(lp, index); |
| 743 | 814 |
if (res > glp_get_row_ub(lp, index) + eps) {
|
| 744 | 815 |
_dual_ray[i] = -1; |
| 745 | 816 |
} else if (res < glp_get_row_lb(lp, index) - eps) {
|
| 746 | 817 |
_dual_ray[i] = 1; |
| 747 | 818 |
} else {
|
| 748 | 819 |
_dual_ray[i] = 0; |
| 749 | 820 |
} |
| 750 | 821 |
_dual_ray[i] *= glp_get_rii(lp, index); |
| 751 | 822 |
} else {
|
| 752 | 823 |
double res = glp_get_col_prim(lp, index - row_num); |
| 753 | 824 |
if (res > glp_get_col_ub(lp, index - row_num) + eps) {
|
| 754 | 825 |
_dual_ray[i] = -1; |
| 755 | 826 |
} else if (res < glp_get_col_lb(lp, index - row_num) - eps) {
|
| 756 | 827 |
_dual_ray[i] = 1; |
| 757 | 828 |
} else {
|
| 758 | 829 |
_dual_ray[i] = 0; |
| 759 | 830 |
} |
| 760 | 831 |
_dual_ray[i] /= glp_get_sjj(lp, index - row_num); |
| 761 | 832 |
} |
| 762 | 833 |
} |
| 763 | 834 |
|
| 764 | 835 |
glp_btran(lp, &_dual_ray.front()); |
| 765 | 836 |
|
| 766 | 837 |
for (int i = 1; i <= row_num; ++i) {
|
| 767 | 838 |
_dual_ray[i] /= glp_get_rii(lp, i); |
| 768 | 839 |
} |
| 769 | 840 |
} |
| 770 | 841 |
} |
| 771 | 842 |
return _dual_ray[i]; |
| 772 | 843 |
} |
| 773 | 844 |
|
| 774 | 845 |
GlpkLp::ProblemType GlpkLp::_getPrimalType() const {
|
| 775 | 846 |
if (glp_get_status(lp) == GLP_OPT) |
| 776 | 847 |
return OPTIMAL; |
| 777 | 848 |
switch (glp_get_prim_stat(lp)) {
|
| 778 | 849 |
case GLP_UNDEF: |
| 779 | 850 |
return UNDEFINED; |
| 780 | 851 |
case GLP_FEAS: |
| 781 | 852 |
case GLP_INFEAS: |
| 782 | 853 |
if (glp_get_dual_stat(lp) == GLP_NOFEAS) {
|
| 783 | 854 |
return UNBOUNDED; |
| 784 | 855 |
} else {
|
| 785 | 856 |
return UNDEFINED; |
| 786 | 857 |
} |
| 787 | 858 |
case GLP_NOFEAS: |
| 788 | 859 |
return INFEASIBLE; |
| 789 | 860 |
default: |
| 790 | 861 |
LEMON_ASSERT(false, "Wrong primal type"); |
| 791 | 862 |
return GlpkLp::ProblemType(); |
| 792 | 863 |
} |
| 793 | 864 |
} |
| 794 | 865 |
|
| 795 | 866 |
GlpkLp::ProblemType GlpkLp::_getDualType() const {
|
| 796 | 867 |
if (glp_get_status(lp) == GLP_OPT) |
| 797 | 868 |
return OPTIMAL; |
| 798 | 869 |
switch (glp_get_dual_stat(lp)) {
|
| 799 | 870 |
case GLP_UNDEF: |
| 800 | 871 |
return UNDEFINED; |
| 801 | 872 |
case GLP_FEAS: |
| 802 | 873 |
case GLP_INFEAS: |
| 803 | 874 |
if (glp_get_prim_stat(lp) == GLP_NOFEAS) {
|
| 804 | 875 |
return UNBOUNDED; |
| 805 | 876 |
} else {
|
| 806 | 877 |
return UNDEFINED; |
| 807 | 878 |
} |
| 808 | 879 |
case GLP_NOFEAS: |
| 809 | 880 |
return INFEASIBLE; |
| 810 | 881 |
default: |
| 811 | 882 |
LEMON_ASSERT(false, "Wrong primal type"); |
| 812 | 883 |
return GlpkLp::ProblemType(); |
| 813 | 884 |
} |
| 814 | 885 |
} |
| 815 | 886 |
|
| 816 |
void GlpkLp::presolver(bool b) {
|
|
| 817 |
lpx_set_int_parm(lp, LPX_K_PRESOL, b ? 1 : 0); |
|
| 818 |
} |
|
| 819 |
|
|
| 820 |
void GlpkLp::messageLevel(MessageLevel m) {
|
|
| 821 |
_message_level = m; |
|
| 887 |
void GlpkLp::presolver(bool presolve) {
|
|
| 888 |
_presolve = presolve; |
|
| 822 | 889 |
} |
| 823 | 890 |
|
| 824 | 891 |
// GlpkMip members |
| 825 | 892 |
|
| 826 | 893 |
GlpkMip::GlpkMip() |
| 827 |
: LpBase(), GlpkBase(), MipSolver() {
|
|
| 828 |
messageLevel(MESSAGE_NO_OUTPUT); |
|
| 894 |
: LpBase(), MipSolver(), GlpkBase() {
|
|
| 829 | 895 |
} |
| 830 | 896 |
|
| 831 | 897 |
GlpkMip::GlpkMip(const GlpkMip& other) |
| 832 |
: LpBase(), GlpkBase(other), MipSolver() {
|
|
| 833 |
messageLevel(MESSAGE_NO_OUTPUT); |
|
| 898 |
: LpBase(), MipSolver(), GlpkBase(other) {
|
|
| 834 | 899 |
} |
| 835 | 900 |
|
| 836 | 901 |
void GlpkMip::_setColType(int i, GlpkMip::ColTypes col_type) {
|
| 837 | 902 |
switch (col_type) {
|
| 838 | 903 |
case INTEGER: |
| 839 | 904 |
glp_set_col_kind(lp, i, GLP_IV); |
| 840 | 905 |
break; |
| 841 | 906 |
case REAL: |
| 842 | 907 |
glp_set_col_kind(lp, i, GLP_CV); |
| 843 | 908 |
break; |
| 844 | 909 |
} |
| 845 | 910 |
} |
| 846 | 911 |
|
| 847 | 912 |
GlpkMip::ColTypes GlpkMip::_getColType(int i) const {
|
| 848 | 913 |
switch (glp_get_col_kind(lp, i)) {
|
| 849 | 914 |
case GLP_IV: |
| 850 | 915 |
case GLP_BV: |
| 851 | 916 |
return INTEGER; |
| 852 | 917 |
default: |
| 853 | 918 |
return REAL; |
| 854 | 919 |
} |
| 855 | 920 |
|
| 856 | 921 |
} |
| 857 | 922 |
|
| 858 | 923 |
GlpkMip::SolveExitStatus GlpkMip::_solve() {
|
| 859 | 924 |
glp_smcp smcp; |
| 860 | 925 |
glp_init_smcp(&smcp); |
| 861 | 926 |
|
| 862 |
switch (_message_level) {
|
|
| 863 |
case MESSAGE_NO_OUTPUT: |
|
| 864 |
smcp.msg_lev = GLP_MSG_OFF; |
|
| 865 |
break; |
|
| 866 |
case MESSAGE_ERROR_MESSAGE: |
|
| 867 |
smcp.msg_lev = GLP_MSG_ERR; |
|
| 868 |
break; |
|
| 869 |
case MESSAGE_NORMAL_OUTPUT: |
|
| 870 |
smcp.msg_lev = GLP_MSG_ON; |
|
| 871 |
break; |
|
| 872 |
case MESSAGE_FULL_OUTPUT: |
|
| 873 |
smcp.msg_lev = GLP_MSG_ALL; |
|
| 874 |
break; |
|
| 875 |
} |
|
| 927 |
smcp.msg_lev = _message_level; |
|
| 876 | 928 |
smcp.meth = GLP_DUAL; |
| 877 | 929 |
|
| 878 |
|
|
| 930 |
// If the basis is not valid we get an error return value. |
|
| 931 |
// In this case we can try to create a new basis. |
|
| 932 |
switch (glp_simplex(lp, &smcp)) {
|
|
| 933 |
case 0: |
|
| 934 |
break; |
|
| 935 |
case GLP_EBADB: |
|
| 936 |
case GLP_ESING: |
|
| 937 |
case GLP_ECOND: |
|
| 938 |
glp_term_out(false); |
|
| 939 |
glp_adv_basis(lp, 0); |
|
| 940 |
glp_term_out(true); |
|
| 941 |
if (glp_simplex(lp, &smcp) != 0) return UNSOLVED; |
|
| 942 |
break; |
|
| 943 |
default: |
|
| 944 |
return UNSOLVED; |
|
| 945 |
} |
|
| 946 |
|
|
| 879 | 947 |
if (glp_get_status(lp) != GLP_OPT) return SOLVED; |
| 880 | 948 |
|
| 881 | 949 |
glp_iocp iocp; |
| 882 | 950 |
glp_init_iocp(&iocp); |
| 883 | 951 |
|
| 884 |
switch (_message_level) {
|
|
| 885 |
case MESSAGE_NO_OUTPUT: |
|
| 886 |
iocp.msg_lev = GLP_MSG_OFF; |
|
| 887 |
break; |
|
| 888 |
case MESSAGE_ERROR_MESSAGE: |
|
| 889 |
iocp.msg_lev = GLP_MSG_ERR; |
|
| 890 |
break; |
|
| 891 |
case MESSAGE_NORMAL_OUTPUT: |
|
| 892 |
iocp.msg_lev = GLP_MSG_ON; |
|
| 893 |
break; |
|
| 894 |
case MESSAGE_FULL_OUTPUT: |
|
| 895 |
iocp.msg_lev = GLP_MSG_ALL; |
|
| 896 |
break; |
|
| 897 |
} |
|
| 952 |
iocp.msg_lev = _message_level; |
|
| 898 | 953 |
|
| 899 | 954 |
if (glp_intopt(lp, &iocp) != 0) return UNSOLVED; |
| 900 | 955 |
return SOLVED; |
| 901 | 956 |
} |
| 902 | 957 |
|
| 903 | 958 |
|
| 904 | 959 |
GlpkMip::ProblemType GlpkMip::_getType() const {
|
| 905 | 960 |
switch (glp_get_status(lp)) {
|
| 906 | 961 |
case GLP_OPT: |
| 907 | 962 |
switch (glp_mip_status(lp)) {
|
| 908 | 963 |
case GLP_UNDEF: |
| 909 | 964 |
return UNDEFINED; |
| 910 | 965 |
case GLP_NOFEAS: |
| 911 | 966 |
return INFEASIBLE; |
| 912 | 967 |
case GLP_FEAS: |
| 913 | 968 |
return FEASIBLE; |
| 914 | 969 |
case GLP_OPT: |
| 915 | 970 |
return OPTIMAL; |
| 916 | 971 |
default: |
| 917 | 972 |
LEMON_ASSERT(false, "Wrong problem type."); |
| 918 | 973 |
return GlpkMip::ProblemType(); |
| 919 | 974 |
} |
| 920 | 975 |
case GLP_NOFEAS: |
| 921 | 976 |
return INFEASIBLE; |
| 922 | 977 |
case GLP_INFEAS: |
| 923 | 978 |
case GLP_FEAS: |
| 924 | 979 |
if (glp_get_dual_stat(lp) == GLP_NOFEAS) {
|
| 925 | 980 |
return UNBOUNDED; |
| 926 | 981 |
} else {
|
| 927 | 982 |
return UNDEFINED; |
| 928 | 983 |
} |
| 929 | 984 |
default: |
| 930 | 985 |
LEMON_ASSERT(false, "Wrong problem type."); |
| 931 | 986 |
return GlpkMip::ProblemType(); |
| 932 | 987 |
} |
| 933 | 988 |
} |
| 934 | 989 |
|
| 935 | 990 |
GlpkMip::Value GlpkMip::_getSol(int i) const {
|
| 936 | 991 |
return glp_mip_col_val(lp, i); |
| 937 | 992 |
} |
| 938 | 993 |
|
| 939 | 994 |
GlpkMip::Value GlpkMip::_getSolValue() const {
|
| 940 | 995 |
return glp_mip_obj_val(lp); |
| 941 | 996 |
} |
| 942 | 997 |
|
| 943 |
GlpkMip* GlpkMip::_newSolver() const { return new GlpkMip; }
|
|
| 944 |
GlpkMip* GlpkMip::_cloneSolver() const {return new GlpkMip(*this); }
|
|
| 998 |
GlpkMip* GlpkMip::newSolver() const { return new GlpkMip; }
|
|
| 999 |
GlpkMip* GlpkMip::cloneSolver() const {return new GlpkMip(*this); }
|
|
| 945 | 1000 |
|
| 946 | 1001 |
const char* GlpkMip::_solverName() const { return "GlpkMip"; }
|
| 947 | 1002 |
|
| 948 |
void GlpkMip::messageLevel(MessageLevel m) {
|
|
| 949 |
_message_level = m; |
|
| 950 |
} |
|
| 951 |
|
|
| 952 | 1003 |
} //END OF NAMESPACE LEMON |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2008 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_GLPK_H |
| 20 | 20 |
#define LEMON_GLPK_H |
| 21 | 21 |
|
| 22 | 22 |
///\file |
| 23 | 23 |
///\brief Header of the LEMON-GLPK lp solver interface. |
| 24 | 24 |
///\ingroup lp_group |
| 25 | 25 |
|
| 26 | 26 |
#include <lemon/lp_base.h> |
| 27 | 27 |
|
| 28 | 28 |
// forward declaration |
| 29 |
# |
|
| 29 |
#if !defined _GLP_PROB && !defined GLP_PROB |
|
| 30 | 30 |
#define _GLP_PROB |
| 31 |
|
|
| 31 |
#define GLP_PROB |
|
| 32 |
typedef struct { double _opaque_prob; } glp_prob;
|
|
| 32 | 33 |
/* LP/MIP problem object */ |
| 33 | 34 |
#endif |
| 34 | 35 |
|
| 35 | 36 |
namespace lemon {
|
| 36 | 37 |
|
| 37 | 38 |
|
| 38 | 39 |
/// \brief Base interface for the GLPK LP and MIP solver |
| 39 | 40 |
/// |
| 40 | 41 |
/// This class implements the common interface of the GLPK LP and MIP solver. |
| 41 | 42 |
/// \ingroup lp_group |
| 42 | 43 |
class GlpkBase : virtual public LpBase {
|
| 43 | 44 |
protected: |
| 44 | 45 |
|
| 45 | 46 |
typedef glp_prob LPX; |
| 46 | 47 |
glp_prob* lp; |
| 47 | 48 |
|
| 48 | 49 |
GlpkBase(); |
| 49 | 50 |
GlpkBase(const GlpkBase&); |
| 50 | 51 |
virtual ~GlpkBase(); |
| 51 | 52 |
|
| 52 | 53 |
protected: |
| 53 | 54 |
|
| 54 | 55 |
virtual int _addCol(); |
| 55 | 56 |
virtual int _addRow(); |
| 57 |
virtual int _addRow(Value l, ExprIterator b, ExprIterator e, Value u); |
|
| 56 | 58 |
|
| 57 | 59 |
virtual void _eraseCol(int i); |
| 58 | 60 |
virtual void _eraseRow(int i); |
| 59 | 61 |
|
| 60 | 62 |
virtual void _eraseColId(int i); |
| 61 | 63 |
virtual void _eraseRowId(int i); |
| 62 | 64 |
|
| 63 | 65 |
virtual void _getColName(int col, std::string& name) const; |
| 64 | 66 |
virtual void _setColName(int col, const std::string& name); |
| 65 | 67 |
virtual int _colByName(const std::string& name) const; |
| 66 | 68 |
|
| 67 | 69 |
virtual void _getRowName(int row, std::string& name) const; |
| 68 | 70 |
virtual void _setRowName(int row, const std::string& name); |
| 69 | 71 |
virtual int _rowByName(const std::string& name) const; |
| 70 | 72 |
|
| 71 | 73 |
virtual void _setRowCoeffs(int i, ExprIterator b, ExprIterator e); |
| 72 | 74 |
virtual void _getRowCoeffs(int i, InsertIterator b) const; |
| 73 | 75 |
|
| 74 | 76 |
virtual void _setColCoeffs(int i, ExprIterator b, ExprIterator e); |
| 75 | 77 |
virtual void _getColCoeffs(int i, InsertIterator b) const; |
| 76 | 78 |
|
| 77 | 79 |
virtual void _setCoeff(int row, int col, Value value); |
| 78 | 80 |
virtual Value _getCoeff(int row, int col) const; |
| 79 | 81 |
|
| 80 | 82 |
virtual void _setColLowerBound(int i, Value value); |
| 81 | 83 |
virtual Value _getColLowerBound(int i) const; |
| 82 | 84 |
|
| 83 | 85 |
virtual void _setColUpperBound(int i, Value value); |
| 84 | 86 |
virtual Value _getColUpperBound(int i) const; |
| 85 | 87 |
|
| 86 | 88 |
virtual void _setRowLowerBound(int i, Value value); |
| 87 | 89 |
virtual Value _getRowLowerBound(int i) const; |
| 88 | 90 |
|
| 89 | 91 |
virtual void _setRowUpperBound(int i, Value value); |
| 90 | 92 |
virtual Value _getRowUpperBound(int i) const; |
| 91 | 93 |
|
| 92 | 94 |
virtual void _setObjCoeffs(ExprIterator b, ExprIterator e); |
| 93 | 95 |
virtual void _getObjCoeffs(InsertIterator b) const; |
| 94 | 96 |
|
| 95 | 97 |
virtual void _setObjCoeff(int i, Value obj_coef); |
| 96 | 98 |
virtual Value _getObjCoeff(int i) const; |
| 97 | 99 |
|
| 98 | 100 |
virtual void _setSense(Sense); |
| 99 | 101 |
virtual Sense _getSense() const; |
| 100 | 102 |
|
| 101 | 103 |
virtual void _clear(); |
| 102 | 104 |
|
| 105 |
virtual void _messageLevel(MessageLevel level); |
|
| 106 |
|
|
| 107 |
private: |
|
| 108 |
|
|
| 109 |
static void freeEnv(); |
|
| 110 |
|
|
| 111 |
struct FreeEnvHelper {
|
|
| 112 |
~FreeEnvHelper() {
|
|
| 113 |
freeEnv(); |
|
| 114 |
} |
|
| 115 |
}; |
|
| 116 |
|
|
| 117 |
static FreeEnvHelper freeEnvHelper; |
|
| 118 |
|
|
| 119 |
protected: |
|
| 120 |
|
|
| 121 |
int _message_level; |
|
| 122 |
|
|
| 103 | 123 |
public: |
| 104 | 124 |
|
| 105 | 125 |
///Pointer to the underlying GLPK data structure. |
| 106 | 126 |
LPX *lpx() {return lp;}
|
| 107 | 127 |
///Const pointer to the underlying GLPK data structure. |
| 108 | 128 |
const LPX *lpx() const {return lp;}
|
| 109 | 129 |
|
| 110 | 130 |
///Returns the constraint identifier understood by GLPK. |
| 111 | 131 |
int lpxRow(Row r) const { return rows(id(r)); }
|
| 112 | 132 |
|
| 113 | 133 |
///Returns the variable identifier understood by GLPK. |
| 114 | 134 |
int lpxCol(Col c) const { return cols(id(c)); }
|
| 115 | 135 |
|
| 116 | 136 |
}; |
| 117 | 137 |
|
| 118 | 138 |
/// \brief Interface for the GLPK LP solver |
| 119 | 139 |
/// |
| 120 | 140 |
/// This class implements an interface for the GLPK LP solver. |
| 121 | 141 |
///\ingroup lp_group |
| 122 |
class GlpkLp : public |
|
| 142 |
class GlpkLp : public LpSolver, public GlpkBase {
|
|
| 123 | 143 |
public: |
| 124 | 144 |
|
| 125 | 145 |
///\e |
| 126 | 146 |
GlpkLp(); |
| 127 | 147 |
///\e |
| 128 | 148 |
GlpkLp(const GlpkLp&); |
| 129 | 149 |
|
| 150 |
///\e |
|
| 151 |
virtual GlpkLp* cloneSolver() const; |
|
| 152 |
///\e |
|
| 153 |
virtual GlpkLp* newSolver() const; |
|
| 154 |
|
|
| 130 | 155 |
private: |
| 131 | 156 |
|
| 132 | 157 |
mutable std::vector<double> _primal_ray; |
| 133 | 158 |
mutable std::vector<double> _dual_ray; |
| 134 | 159 |
|
| 135 | 160 |
void _clear_temporals(); |
| 136 | 161 |
|
| 137 | 162 |
protected: |
| 138 | 163 |
|
| 139 |
virtual GlpkLp* _cloneSolver() const; |
|
| 140 |
virtual GlpkLp* _newSolver() const; |
|
| 141 |
|
|
| 142 | 164 |
virtual const char* _solverName() const; |
| 143 | 165 |
|
| 144 | 166 |
virtual SolveExitStatus _solve(); |
| 145 | 167 |
virtual Value _getPrimal(int i) const; |
| 146 | 168 |
virtual Value _getDual(int i) const; |
| 147 | 169 |
|
| 148 | 170 |
virtual Value _getPrimalValue() const; |
| 149 | 171 |
|
| 150 | 172 |
virtual VarStatus _getColStatus(int i) const; |
| 151 | 173 |
virtual VarStatus _getRowStatus(int i) const; |
| 152 | 174 |
|
| 153 | 175 |
virtual Value _getPrimalRay(int i) const; |
| 154 | 176 |
virtual Value _getDualRay(int i) const; |
| 155 | 177 |
|
| 156 |
///\todo It should be clarified |
|
| 157 |
/// |
|
| 158 | 178 |
virtual ProblemType _getPrimalType() const; |
| 159 | 179 |
virtual ProblemType _getDualType() const; |
| 160 | 180 |
|
| 161 | 181 |
public: |
| 162 | 182 |
|
| 163 | 183 |
///Solve with primal simplex |
| 164 | 184 |
SolveExitStatus solvePrimal(); |
| 165 | 185 |
|
| 166 | 186 |
///Solve with dual simplex |
| 167 | 187 |
SolveExitStatus solveDual(); |
| 168 | 188 |
|
| 189 |
private: |
|
| 190 |
|
|
| 191 |
bool _presolve; |
|
| 192 |
|
|
| 193 |
public: |
|
| 194 |
|
|
| 169 | 195 |
///Turns on or off the presolver |
| 170 | 196 |
|
| 171 | 197 |
///Turns on (\c b is \c true) or off (\c b is \c false) the presolver |
| 172 | 198 |
/// |
| 173 | 199 |
///The presolver is off by default. |
| 174 |
void presolver(bool |
|
| 200 |
void presolver(bool presolve); |
|
| 175 | 201 |
|
| 176 |
///Enum for \c messageLevel() parameter |
|
| 177 |
enum MessageLevel {
|
|
| 178 |
/// no output (default value) |
|
| 179 |
MESSAGE_NO_OUTPUT = 0, |
|
| 180 |
/// error messages only |
|
| 181 |
MESSAGE_ERROR_MESSAGE = 1, |
|
| 182 |
/// normal output |
|
| 183 |
MESSAGE_NORMAL_OUTPUT = 2, |
|
| 184 |
/// full output (includes informational messages) |
|
| 185 |
MESSAGE_FULL_OUTPUT = 3 |
|
| 186 |
}; |
|
| 187 |
|
|
| 188 |
private: |
|
| 189 |
|
|
| 190 |
MessageLevel _message_level; |
|
| 191 |
|
|
| 192 |
public: |
|
| 193 |
|
|
| 194 |
///Set the verbosity of the messages |
|
| 195 |
|
|
| 196 |
///Set the verbosity of the messages |
|
| 197 |
/// |
|
| 198 |
///\param m is the level of the messages output by the solver routines. |
|
| 199 |
void messageLevel(MessageLevel m); |
|
| 200 | 202 |
}; |
| 201 | 203 |
|
| 202 | 204 |
/// \brief Interface for the GLPK MIP solver |
| 203 | 205 |
/// |
| 204 | 206 |
/// This class implements an interface for the GLPK MIP solver. |
| 205 | 207 |
///\ingroup lp_group |
| 206 |
class GlpkMip : public |
|
| 208 |
class GlpkMip : public MipSolver, public GlpkBase {
|
|
| 207 | 209 |
public: |
| 208 | 210 |
|
| 209 | 211 |
///\e |
| 210 | 212 |
GlpkMip(); |
| 211 | 213 |
///\e |
| 212 | 214 |
GlpkMip(const GlpkMip&); |
| 213 | 215 |
|
| 216 |
virtual GlpkMip* cloneSolver() const; |
|
| 217 |
virtual GlpkMip* newSolver() const; |
|
| 218 |
|
|
| 214 | 219 |
protected: |
| 215 | 220 |
|
| 216 |
virtual GlpkMip* _cloneSolver() const; |
|
| 217 |
virtual GlpkMip* _newSolver() const; |
|
| 218 |
|
|
| 219 | 221 |
virtual const char* _solverName() const; |
| 220 | 222 |
|
| 221 | 223 |
virtual ColTypes _getColType(int col) const; |
| 222 | 224 |
virtual void _setColType(int col, ColTypes col_type); |
| 223 | 225 |
|
| 224 | 226 |
virtual SolveExitStatus _solve(); |
| 225 | 227 |
virtual ProblemType _getType() const; |
| 226 | 228 |
virtual Value _getSol(int i) const; |
| 227 | 229 |
virtual Value _getSolValue() const; |
| 228 | 230 |
|
| 229 |
///Enum for \c messageLevel() parameter |
|
| 230 |
enum MessageLevel {
|
|
| 231 |
/// no output (default value) |
|
| 232 |
MESSAGE_NO_OUTPUT = 0, |
|
| 233 |
/// error messages only |
|
| 234 |
MESSAGE_ERROR_MESSAGE = 1, |
|
| 235 |
/// normal output |
|
| 236 |
MESSAGE_NORMAL_OUTPUT = 2, |
|
| 237 |
/// full output (includes informational messages) |
|
| 238 |
MESSAGE_FULL_OUTPUT = 3 |
|
| 239 |
}; |
|
| 240 |
|
|
| 241 |
private: |
|
| 242 |
|
|
| 243 |
MessageLevel _message_level; |
|
| 244 |
|
|
| 245 |
public: |
|
| 246 |
|
|
| 247 |
///Set the verbosity of the messages |
|
| 248 |
|
|
| 249 |
///Set the verbosity of the messages |
|
| 250 |
/// |
|
| 251 |
///\param m is the level of the messages output by the solver routines. |
|
| 252 |
void messageLevel(MessageLevel m); |
|
| 253 | 231 |
}; |
| 254 | 232 |
|
| 255 | 233 |
|
| 256 | 234 |
} //END OF NAMESPACE LEMON |
| 257 | 235 |
|
| 258 | 236 |
#endif //LEMON_GLPK_H |
| 259 | 237 |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_GRAPH_TO_EPS_H |
| 20 | 20 |
#define LEMON_GRAPH_TO_EPS_H |
| 21 | 21 |
|
| 22 | 22 |
#include<iostream> |
| 23 | 23 |
#include<fstream> |
| 24 | 24 |
#include<sstream> |
| 25 | 25 |
#include<algorithm> |
| 26 | 26 |
#include<vector> |
| 27 | 27 |
|
| 28 | 28 |
#ifndef WIN32 |
| 29 | 29 |
#include<sys/time.h> |
| 30 | 30 |
#include<ctime> |
| 31 | 31 |
#else |
| 32 |
#define WIN32_LEAN_AND_MEAN |
|
| 33 |
#define NOMINMAX |
|
| 34 |
#include<windows.h> |
|
| 32 |
#include<lemon/bits/windows.h> |
|
| 35 | 33 |
#endif |
| 36 | 34 |
|
| 37 | 35 |
#include<lemon/math.h> |
| 38 | 36 |
#include<lemon/core.h> |
| 39 | 37 |
#include<lemon/dim2.h> |
| 40 | 38 |
#include<lemon/maps.h> |
| 41 | 39 |
#include<lemon/color.h> |
| 42 | 40 |
#include<lemon/bits/bezier.h> |
| 43 | 41 |
#include<lemon/error.h> |
| 44 | 42 |
|
| 45 | 43 |
|
| 46 | 44 |
///\ingroup eps_io |
| 47 | 45 |
///\file |
| 48 | 46 |
///\brief A well configurable tool for visualizing graphs |
| 49 | 47 |
|
| 50 | 48 |
namespace lemon {
|
| 51 | 49 |
|
| 52 | 50 |
namespace _graph_to_eps_bits {
|
| 53 | 51 |
template<class MT> |
| 54 | 52 |
class _NegY {
|
| 55 | 53 |
public: |
| 56 | 54 |
typedef typename MT::Key Key; |
| 57 | 55 |
typedef typename MT::Value Value; |
| 58 | 56 |
const MT ↦ |
| 59 | 57 |
int yscale; |
| 60 | 58 |
_NegY(const MT &m,bool b) : map(m), yscale(1-b*2) {}
|
| 61 | 59 |
Value operator[](Key n) { return Value(map[n].x,map[n].y*yscale);}
|
| 62 | 60 |
}; |
| 63 | 61 |
} |
| 64 | 62 |
|
| 65 | 63 |
///Default traits class of GraphToEps |
| 66 | 64 |
|
| 67 | 65 |
///Default traits class of \ref GraphToEps. |
| 68 | 66 |
/// |
| 69 |
///\c G is the type of the underlying graph. |
|
| 70 |
template<class G> |
|
| 67 |
///\param GR is the type of the underlying graph. |
|
| 68 |
template<class GR> |
|
| 71 | 69 |
struct DefaultGraphToEpsTraits |
| 72 | 70 |
{
|
| 73 |
typedef |
|
| 71 |
typedef GR Graph; |
|
| 72 |
typedef GR Digraph; |
|
| 74 | 73 |
typedef typename Graph::Node Node; |
| 75 | 74 |
typedef typename Graph::NodeIt NodeIt; |
| 76 | 75 |
typedef typename Graph::Arc Arc; |
| 77 | 76 |
typedef typename Graph::ArcIt ArcIt; |
| 78 | 77 |
typedef typename Graph::InArcIt InArcIt; |
| 79 | 78 |
typedef typename Graph::OutArcIt OutArcIt; |
| 80 | 79 |
|
| 81 | 80 |
|
| 82 | 81 |
const Graph &g; |
| 83 | 82 |
|
| 84 | 83 |
std::ostream& os; |
| 85 | 84 |
|
| 86 | 85 |
typedef ConstMap<typename Graph::Node,dim2::Point<double> > CoordsMapType; |
| 87 | 86 |
CoordsMapType _coords; |
| 88 | 87 |
ConstMap<typename Graph::Node,double > _nodeSizes; |
| 89 | 88 |
ConstMap<typename Graph::Node,int > _nodeShapes; |
| 90 | 89 |
|
| 91 | 90 |
ConstMap<typename Graph::Node,Color > _nodeColors; |
| 92 | 91 |
ConstMap<typename Graph::Arc,Color > _arcColors; |
| 93 | 92 |
|
| 94 | 93 |
ConstMap<typename Graph::Arc,double > _arcWidths; |
| 95 | 94 |
|
| 96 | 95 |
double _arcWidthScale; |
| 97 | 96 |
|
| 98 | 97 |
double _nodeScale; |
| 99 | 98 |
double _xBorder, _yBorder; |
| 100 | 99 |
double _scale; |
| 101 | 100 |
double _nodeBorderQuotient; |
| 102 | 101 |
|
| 103 | 102 |
bool _drawArrows; |
| 104 | 103 |
double _arrowLength, _arrowWidth; |
| 105 | 104 |
|
| 106 | 105 |
bool _showNodes, _showArcs; |
| 107 | 106 |
|
| 108 | 107 |
bool _enableParallel; |
| 109 | 108 |
double _parArcDist; |
| 110 | 109 |
|
| 111 | 110 |
bool _showNodeText; |
| 112 | 111 |
ConstMap<typename Graph::Node,bool > _nodeTexts; |
| 113 | 112 |
double _nodeTextSize; |
| 114 | 113 |
|
| 115 | 114 |
bool _showNodePsText; |
| 116 | 115 |
ConstMap<typename Graph::Node,bool > _nodePsTexts; |
| 117 | 116 |
char *_nodePsTextsPreamble; |
| 118 | 117 |
|
| 119 | 118 |
bool _undirected; |
| 120 | 119 |
|
| 121 | 120 |
bool _pleaseRemoveOsStream; |
| 122 | 121 |
|
| 123 | 122 |
bool _scaleToA4; |
| 124 | 123 |
|
| 125 | 124 |
std::string _title; |
| 126 | 125 |
std::string _copyright; |
| 127 | 126 |
|
| 128 | 127 |
enum NodeTextColorType |
| 129 | 128 |
{ DIST_COL=0, DIST_BW=1, CUST_COL=2, SAME_COL=3 } _nodeTextColorType;
|
| 130 | 129 |
ConstMap<typename Graph::Node,Color > _nodeTextColors; |
| 131 | 130 |
|
| 132 | 131 |
bool _autoNodeScale; |
| 133 | 132 |
bool _autoArcWidthScale; |
| 134 | 133 |
|
| 135 | 134 |
bool _absoluteNodeSizes; |
| 136 | 135 |
bool _absoluteArcWidths; |
| 137 | 136 |
|
| 138 | 137 |
bool _negY; |
| 139 | 138 |
|
| 140 | 139 |
bool _preScale; |
| 141 | 140 |
///Constructor |
| 142 | 141 |
|
| 143 | 142 |
///Constructor |
| 144 |
///\param _g Reference to the graph to be printed. |
|
| 145 |
///\param _os Reference to the output stream. |
|
| 146 |
///\param |
|
| 143 |
///\param gr Reference to the graph to be printed. |
|
| 144 |
///\param ost Reference to the output stream. |
|
| 147 | 145 |
///By default it is <tt>std::cout</tt>. |
| 148 |
///\param |
|
| 146 |
///\param pros If it is \c true, then the \c ostream referenced by \c os |
|
| 149 | 147 |
///will be explicitly deallocated by the destructor. |
| 150 |
DefaultGraphToEpsTraits(const G &_g,std::ostream& _os=std::cout, |
|
| 151 |
bool _pros=false) : |
|
| 152 |
|
|
| 148 |
DefaultGraphToEpsTraits(const GR &gr, std::ostream& ost = std::cout, |
|
| 149 |
bool pros = false) : |
|
| 150 |
g(gr), os(ost), |
|
| 153 | 151 |
_coords(dim2::Point<double>(1,1)), _nodeSizes(1), _nodeShapes(0), |
| 154 | 152 |
_nodeColors(WHITE), _arcColors(BLACK), |
| 155 | 153 |
_arcWidths(1.0), _arcWidthScale(0.003), |
| 156 | 154 |
_nodeScale(.01), _xBorder(10), _yBorder(10), _scale(1.0), |
| 157 | 155 |
_nodeBorderQuotient(.1), |
| 158 | 156 |
_drawArrows(false), _arrowLength(1), _arrowWidth(0.3), |
| 159 | 157 |
_showNodes(true), _showArcs(true), |
| 160 | 158 |
_enableParallel(false), _parArcDist(1), |
| 161 | 159 |
_showNodeText(false), _nodeTexts(false), _nodeTextSize(1), |
| 162 | 160 |
_showNodePsText(false), _nodePsTexts(false), _nodePsTextsPreamble(0), |
| 163 |
_undirected(lemon::UndirectedTagIndicator<G>::value), |
|
| 164 |
_pleaseRemoveOsStream(_pros), _scaleToA4(false), |
|
| 161 |
_undirected(lemon::UndirectedTagIndicator<GR>::value), |
|
| 162 |
_pleaseRemoveOsStream(pros), _scaleToA4(false), |
|
| 165 | 163 |
_nodeTextColorType(SAME_COL), _nodeTextColors(BLACK), |
| 166 | 164 |
_autoNodeScale(false), |
| 167 | 165 |
_autoArcWidthScale(false), |
| 168 | 166 |
_absoluteNodeSizes(false), |
| 169 | 167 |
_absoluteArcWidths(false), |
| 170 | 168 |
_negY(false), |
| 171 | 169 |
_preScale(true) |
| 172 | 170 |
{}
|
| 173 | 171 |
}; |
| 174 | 172 |
|
| 175 | 173 |
///Auxiliary class to implement the named parameters of \ref graphToEps() |
| 176 | 174 |
|
| 177 | 175 |
///Auxiliary class to implement the named parameters of \ref graphToEps(). |
| 178 | 176 |
/// |
| 179 | 177 |
///For detailed examples see the \ref graph_to_eps_demo.cc demo file. |
| 180 | 178 |
template<class T> class GraphToEps : public T |
| 181 | 179 |
{
|
| 182 | 180 |
// Can't believe it is required by the C++ standard |
| 183 | 181 |
using T::g; |
| 184 | 182 |
using T::os; |
| 185 | 183 |
|
| 186 | 184 |
using T::_coords; |
| 187 | 185 |
using T::_nodeSizes; |
| 188 | 186 |
using T::_nodeShapes; |
| 189 | 187 |
using T::_nodeColors; |
| 190 | 188 |
using T::_arcColors; |
| 191 | 189 |
using T::_arcWidths; |
| 192 | 190 |
|
| 193 | 191 |
using T::_arcWidthScale; |
| 194 | 192 |
using T::_nodeScale; |
| 195 | 193 |
using T::_xBorder; |
| 196 | 194 |
using T::_yBorder; |
| 197 | 195 |
using T::_scale; |
| 198 | 196 |
using T::_nodeBorderQuotient; |
| 199 | 197 |
|
| 200 | 198 |
using T::_drawArrows; |
| 201 | 199 |
using T::_arrowLength; |
| 202 | 200 |
using T::_arrowWidth; |
| 203 | 201 |
|
| 204 | 202 |
using T::_showNodes; |
| 205 | 203 |
using T::_showArcs; |
| 206 | 204 |
|
| 207 | 205 |
using T::_enableParallel; |
| 208 | 206 |
using T::_parArcDist; |
| 209 | 207 |
|
| 210 | 208 |
using T::_showNodeText; |
| 211 | 209 |
using T::_nodeTexts; |
| 212 | 210 |
using T::_nodeTextSize; |
| 213 | 211 |
|
| 214 | 212 |
using T::_showNodePsText; |
| 215 | 213 |
using T::_nodePsTexts; |
| 216 | 214 |
using T::_nodePsTextsPreamble; |
| 217 | 215 |
|
| 218 | 216 |
using T::_undirected; |
| 219 | 217 |
|
| 220 | 218 |
using T::_pleaseRemoveOsStream; |
| 221 | 219 |
|
| 222 | 220 |
using T::_scaleToA4; |
| 223 | 221 |
|
| 224 | 222 |
using T::_title; |
| 225 | 223 |
using T::_copyright; |
| 226 | 224 |
|
| 227 | 225 |
using T::NodeTextColorType; |
| 228 | 226 |
using T::CUST_COL; |
| 229 | 227 |
using T::DIST_COL; |
| 230 | 228 |
using T::DIST_BW; |
| 231 | 229 |
using T::_nodeTextColorType; |
| 232 | 230 |
using T::_nodeTextColors; |
| 233 | 231 |
|
| 234 | 232 |
using T::_autoNodeScale; |
| 235 | 233 |
using T::_autoArcWidthScale; |
| 236 | 234 |
|
| 237 | 235 |
using T::_absoluteNodeSizes; |
| 238 | 236 |
using T::_absoluteArcWidths; |
| 239 | 237 |
|
| 240 | 238 |
|
| 241 | 239 |
using T::_negY; |
| 242 | 240 |
using T::_preScale; |
| 243 | 241 |
|
| 244 | 242 |
// dradnats ++C eht yb deriuqer si ti eveileb t'naC |
| 245 | 243 |
|
| 246 | 244 |
typedef typename T::Graph Graph; |
| 245 |
typedef typename T::Digraph Digraph; |
|
| 247 | 246 |
typedef typename Graph::Node Node; |
| 248 | 247 |
typedef typename Graph::NodeIt NodeIt; |
| 249 | 248 |
typedef typename Graph::Arc Arc; |
| 250 | 249 |
typedef typename Graph::ArcIt ArcIt; |
| 251 | 250 |
typedef typename Graph::InArcIt InArcIt; |
| 252 | 251 |
typedef typename Graph::OutArcIt OutArcIt; |
| 253 | 252 |
|
| 254 | 253 |
static const int INTERPOL_PREC; |
| 255 | 254 |
static const double A4HEIGHT; |
| 256 | 255 |
static const double A4WIDTH; |
| 257 | 256 |
static const double A4BORDER; |
| 258 | 257 |
|
| 259 | 258 |
bool dontPrint; |
| 260 | 259 |
|
| 261 | 260 |
public: |
| 262 | 261 |
///Node shapes |
| 263 | 262 |
|
| 264 | 263 |
///Node shapes. |
| 265 | 264 |
/// |
| 266 | 265 |
enum NodeShapes {
|
| 267 | 266 |
/// = 0 |
| 268 | 267 |
///\image html nodeshape_0.png |
| 269 | 268 |
///\image latex nodeshape_0.eps "CIRCLE shape (0)" width=2cm |
| 270 | 269 |
CIRCLE=0, |
| 271 | 270 |
/// = 1 |
| 272 | 271 |
///\image html nodeshape_1.png |
| 273 | 272 |
///\image latex nodeshape_1.eps "SQUARE shape (1)" width=2cm |
| 274 |
/// |
|
| 275 | 273 |
SQUARE=1, |
| 276 | 274 |
/// = 2 |
| 277 | 275 |
///\image html nodeshape_2.png |
| 278 | 276 |
///\image latex nodeshape_2.eps "DIAMOND shape (2)" width=2cm |
| 279 |
/// |
|
| 280 | 277 |
DIAMOND=2, |
| 281 | 278 |
/// = 3 |
| 282 | 279 |
///\image html nodeshape_3.png |
| 283 |
///\image latex nodeshape_2.eps "MALE shape (4)" width=2cm |
|
| 284 |
/// |
|
| 280 |
///\image latex nodeshape_3.eps "MALE shape (3)" width=2cm |
|
| 285 | 281 |
MALE=3, |
| 286 | 282 |
/// = 4 |
| 287 | 283 |
///\image html nodeshape_4.png |
| 288 |
///\image latex nodeshape_2.eps "FEMALE shape (4)" width=2cm |
|
| 289 |
/// |
|
| 284 |
///\image latex nodeshape_4.eps "FEMALE shape (4)" width=2cm |
|
| 290 | 285 |
FEMALE=4 |
| 291 | 286 |
}; |
| 292 | 287 |
|
| 293 | 288 |
private: |
| 294 | 289 |
class arcLess {
|
| 295 | 290 |
const Graph &g; |
| 296 | 291 |
public: |
| 297 | 292 |
arcLess(const Graph &_g) : g(_g) {}
|
| 298 | 293 |
bool operator()(Arc a,Arc b) const |
| 299 | 294 |
{
|
| 300 | 295 |
Node ai=std::min(g.source(a),g.target(a)); |
| 301 | 296 |
Node aa=std::max(g.source(a),g.target(a)); |
| 302 | 297 |
Node bi=std::min(g.source(b),g.target(b)); |
| 303 | 298 |
Node ba=std::max(g.source(b),g.target(b)); |
| 304 | 299 |
return ai<bi || |
| 305 | 300 |
(ai==bi && (aa < ba || |
| 306 | 301 |
(aa==ba && ai==g.source(a) && bi==g.target(b)))); |
| 307 | 302 |
} |
| 308 | 303 |
}; |
| 309 | 304 |
bool isParallel(Arc e,Arc f) const |
| 310 | 305 |
{
|
| 311 | 306 |
return (g.source(e)==g.source(f)&& |
| 312 | 307 |
g.target(e)==g.target(f)) || |
| 313 | 308 |
(g.source(e)==g.target(f)&& |
| 314 | 309 |
g.target(e)==g.source(f)); |
| 315 | 310 |
} |
| 316 | 311 |
template<class TT> |
| 317 | 312 |
static std::string psOut(const dim2::Point<TT> &p) |
| 318 | 313 |
{
|
| 319 | 314 |
std::ostringstream os; |
| 320 | 315 |
os << p.x << ' ' << p.y; |
| 321 | 316 |
return os.str(); |
| 322 | 317 |
} |
| 323 | 318 |
static std::string psOut(const Color &c) |
| 324 | 319 |
{
|
| 325 | 320 |
std::ostringstream os; |
| 326 | 321 |
os << c.red() << ' ' << c.green() << ' ' << c.blue(); |
| 327 | 322 |
return os.str(); |
| 328 | 323 |
} |
| 329 | 324 |
|
| 330 | 325 |
public: |
| 331 | 326 |
GraphToEps(const T &t) : T(t), dontPrint(false) {};
|
| 332 | 327 |
|
| 333 | 328 |
template<class X> struct CoordsTraits : public T {
|
| 334 | 329 |
typedef X CoordsMapType; |
| 335 | 330 |
const X &_coords; |
| 336 | 331 |
CoordsTraits(const T &t,const X &x) : T(t), _coords(x) {}
|
| 337 | 332 |
}; |
| 338 | 333 |
///Sets the map of the node coordinates |
| 339 | 334 |
|
| 340 | 335 |
///Sets the map of the node coordinates. |
| 341 | 336 |
///\param x must be a node map with \ref dim2::Point "dim2::Point<double>" or |
| 342 | 337 |
///\ref dim2::Point "dim2::Point<int>" values. |
| 343 | 338 |
template<class X> GraphToEps<CoordsTraits<X> > coords(const X &x) {
|
| 344 | 339 |
dontPrint=true; |
| 345 | 340 |
return GraphToEps<CoordsTraits<X> >(CoordsTraits<X>(*this,x)); |
| 346 | 341 |
} |
| 347 | 342 |
template<class X> struct NodeSizesTraits : public T {
|
| 348 | 343 |
const X &_nodeSizes; |
| 349 | 344 |
NodeSizesTraits(const T &t,const X &x) : T(t), _nodeSizes(x) {}
|
| 350 | 345 |
}; |
| 351 | 346 |
///Sets the map of the node sizes |
| 352 | 347 |
|
| 353 | 348 |
///Sets the map of the node sizes. |
| 354 | 349 |
///\param x must be a node map with \c double (or convertible) values. |
| 355 | 350 |
template<class X> GraphToEps<NodeSizesTraits<X> > nodeSizes(const X &x) |
| 356 | 351 |
{
|
| 357 | 352 |
dontPrint=true; |
| 358 | 353 |
return GraphToEps<NodeSizesTraits<X> >(NodeSizesTraits<X>(*this,x)); |
| 359 | 354 |
} |
| 360 | 355 |
template<class X> struct NodeShapesTraits : public T {
|
| 361 | 356 |
const X &_nodeShapes; |
| 362 | 357 |
NodeShapesTraits(const T &t,const X &x) : T(t), _nodeShapes(x) {}
|
| 363 | 358 |
}; |
| 364 | 359 |
///Sets the map of the node shapes |
| 365 | 360 |
|
| 366 | 361 |
///Sets the map of the node shapes. |
| 367 | 362 |
///The available shape values |
| 368 | 363 |
///can be found in \ref NodeShapes "enum NodeShapes". |
| 369 | 364 |
///\param x must be a node map with \c int (or convertible) values. |
| 370 | 365 |
///\sa NodeShapes |
| 371 | 366 |
template<class X> GraphToEps<NodeShapesTraits<X> > nodeShapes(const X &x) |
| 372 | 367 |
{
|
| 373 | 368 |
dontPrint=true; |
| 374 | 369 |
return GraphToEps<NodeShapesTraits<X> >(NodeShapesTraits<X>(*this,x)); |
| 375 | 370 |
} |
| 376 | 371 |
template<class X> struct NodeTextsTraits : public T {
|
| 377 | 372 |
const X &_nodeTexts; |
| 378 | 373 |
NodeTextsTraits(const T &t,const X &x) : T(t), _nodeTexts(x) {}
|
| 379 | 374 |
}; |
| 380 | 375 |
///Sets the text printed on the nodes |
| 381 | 376 |
|
| 382 | 377 |
///Sets the text printed on the nodes. |
| 383 | 378 |
///\param x must be a node map with type that can be pushed to a standard |
| 384 | 379 |
///\c ostream. |
| 385 | 380 |
template<class X> GraphToEps<NodeTextsTraits<X> > nodeTexts(const X &x) |
| 386 | 381 |
{
|
| 387 | 382 |
dontPrint=true; |
| 388 | 383 |
_showNodeText=true; |
| 389 | 384 |
return GraphToEps<NodeTextsTraits<X> >(NodeTextsTraits<X>(*this,x)); |
| 390 | 385 |
} |
| 391 | 386 |
template<class X> struct NodePsTextsTraits : public T {
|
| 392 | 387 |
const X &_nodePsTexts; |
| 393 | 388 |
NodePsTextsTraits(const T &t,const X &x) : T(t), _nodePsTexts(x) {}
|
| 394 | 389 |
}; |
| 395 | 390 |
///Inserts a PostScript block to the nodes |
| 396 | 391 |
|
| 397 | 392 |
///With this command it is possible to insert a verbatim PostScript |
| 398 | 393 |
///block to the nodes. |
| 399 | 394 |
///The PS current point will be moved to the center of the node before |
| 400 | 395 |
///the PostScript block inserted. |
| 401 | 396 |
/// |
| 402 | 397 |
///Before and after the block a newline character is inserted so you |
| 403 | 398 |
///don't have to bother with the separators. |
| 404 | 399 |
/// |
| 405 | 400 |
///\param x must be a node map with type that can be pushed to a standard |
| 406 | 401 |
///\c ostream. |
| 407 | 402 |
/// |
| 408 | 403 |
///\sa nodePsTextsPreamble() |
| 409 | 404 |
template<class X> GraphToEps<NodePsTextsTraits<X> > nodePsTexts(const X &x) |
| 410 | 405 |
{
|
| 411 | 406 |
dontPrint=true; |
| 412 | 407 |
_showNodePsText=true; |
| 413 | 408 |
return GraphToEps<NodePsTextsTraits<X> >(NodePsTextsTraits<X>(*this,x)); |
| 414 | 409 |
} |
| 415 | 410 |
template<class X> struct ArcWidthsTraits : public T {
|
| 416 | 411 |
const X &_arcWidths; |
| 417 | 412 |
ArcWidthsTraits(const T &t,const X &x) : T(t), _arcWidths(x) {}
|
| 418 | 413 |
}; |
| 419 | 414 |
///Sets the map of the arc widths |
| 420 | 415 |
|
| 421 | 416 |
///Sets the map of the arc widths. |
| 422 | 417 |
///\param x must be an arc map with \c double (or convertible) values. |
| 423 | 418 |
template<class X> GraphToEps<ArcWidthsTraits<X> > arcWidths(const X &x) |
| 424 | 419 |
{
|
| 425 | 420 |
dontPrint=true; |
| 426 | 421 |
return GraphToEps<ArcWidthsTraits<X> >(ArcWidthsTraits<X>(*this,x)); |
| 427 | 422 |
} |
| 428 | 423 |
|
| 429 | 424 |
template<class X> struct NodeColorsTraits : public T {
|
| 430 | 425 |
const X &_nodeColors; |
| 431 | 426 |
NodeColorsTraits(const T &t,const X &x) : T(t), _nodeColors(x) {}
|
| 432 | 427 |
}; |
| 433 | 428 |
///Sets the map of the node colors |
| 434 | 429 |
|
| 435 | 430 |
///Sets the map of the node colors. |
| 436 | 431 |
///\param x must be a node map with \ref Color values. |
| 437 | 432 |
/// |
| 438 | 433 |
///\sa Palette |
| 439 | 434 |
template<class X> GraphToEps<NodeColorsTraits<X> > |
| 440 | 435 |
nodeColors(const X &x) |
| 441 | 436 |
{
|
| 442 | 437 |
dontPrint=true; |
| 443 | 438 |
return GraphToEps<NodeColorsTraits<X> >(NodeColorsTraits<X>(*this,x)); |
| 444 | 439 |
} |
| 445 | 440 |
template<class X> struct NodeTextColorsTraits : public T {
|
| 446 | 441 |
const X &_nodeTextColors; |
| 447 | 442 |
NodeTextColorsTraits(const T &t,const X &x) : T(t), _nodeTextColors(x) {}
|
| 448 | 443 |
}; |
| 449 | 444 |
///Sets the map of the node text colors |
| 450 | 445 |
|
| 451 | 446 |
///Sets the map of the node text colors. |
| 452 | 447 |
///\param x must be a node map with \ref Color values. |
| 453 | 448 |
/// |
| 454 | 449 |
///\sa Palette |
| 455 | 450 |
template<class X> GraphToEps<NodeTextColorsTraits<X> > |
| 456 | 451 |
nodeTextColors(const X &x) |
| 457 | 452 |
{
|
| 458 | 453 |
dontPrint=true; |
| 459 | 454 |
_nodeTextColorType=CUST_COL; |
| 460 | 455 |
return GraphToEps<NodeTextColorsTraits<X> > |
| 461 | 456 |
(NodeTextColorsTraits<X>(*this,x)); |
| 462 | 457 |
} |
| 463 | 458 |
template<class X> struct ArcColorsTraits : public T {
|
| 464 | 459 |
const X &_arcColors; |
| 465 | 460 |
ArcColorsTraits(const T &t,const X &x) : T(t), _arcColors(x) {}
|
| 466 | 461 |
}; |
| 467 | 462 |
///Sets the map of the arc colors |
| 468 | 463 |
|
| 469 | 464 |
///Sets the map of the arc colors. |
| 470 | 465 |
///\param x must be an arc map with \ref Color values. |
| 471 | 466 |
/// |
| 472 | 467 |
///\sa Palette |
| 473 | 468 |
template<class X> GraphToEps<ArcColorsTraits<X> > |
| 474 | 469 |
arcColors(const X &x) |
| 475 | 470 |
{
|
| 476 | 471 |
dontPrint=true; |
| 477 | 472 |
return GraphToEps<ArcColorsTraits<X> >(ArcColorsTraits<X>(*this,x)); |
| 478 | 473 |
} |
| 479 | 474 |
///Sets a global scale factor for node sizes |
| 480 | 475 |
|
| 481 | 476 |
///Sets a global scale factor for node sizes. |
| 482 | 477 |
/// |
| 483 | 478 |
/// If nodeSizes() is not given, this function simply sets the node |
| 484 | 479 |
/// sizes to \c d. If nodeSizes() is given, but |
| 485 | 480 |
/// autoNodeScale() is not, then the node size given by |
| 486 | 481 |
/// nodeSizes() will be multiplied by the value \c d. |
| 487 | 482 |
/// If both nodeSizes() and autoNodeScale() are used, then the |
| 488 | 483 |
/// node sizes will be scaled in such a way that the greatest size will be |
| 489 | 484 |
/// equal to \c d. |
| 490 | 485 |
/// \sa nodeSizes() |
| 491 | 486 |
/// \sa autoNodeScale() |
| 492 | 487 |
GraphToEps<T> &nodeScale(double d=.01) {_nodeScale=d;return *this;}
|
| 493 | 488 |
///Turns on/off the automatic node size scaling. |
| 494 | 489 |
|
| 495 | 490 |
///Turns on/off the automatic node size scaling. |
| 496 | 491 |
/// |
| 497 | 492 |
///\sa nodeScale() |
| 498 | 493 |
/// |
| 499 | 494 |
GraphToEps<T> &autoNodeScale(bool b=true) {
|
| 500 | 495 |
_autoNodeScale=b;return *this; |
| 501 | 496 |
} |
| 502 | 497 |
|
| 503 | 498 |
///Turns on/off the absolutematic node size scaling. |
| 504 | 499 |
|
| 505 | 500 |
///Turns on/off the absolutematic node size scaling. |
| 506 | 501 |
/// |
| 507 | 502 |
///\sa nodeScale() |
| 508 | 503 |
/// |
| 509 | 504 |
GraphToEps<T> &absoluteNodeSizes(bool b=true) {
|
| 510 | 505 |
_absoluteNodeSizes=b;return *this; |
| 511 | 506 |
} |
| 512 | 507 |
|
| 513 | 508 |
///Negates the Y coordinates. |
| 514 | 509 |
GraphToEps<T> &negateY(bool b=true) {
|
| 515 | 510 |
_negY=b;return *this; |
| 516 | 511 |
} |
| 517 | 512 |
|
| 518 | 513 |
///Turn on/off pre-scaling |
| 519 | 514 |
|
| 520 | 515 |
///By default graphToEps() rescales the whole image in order to avoid |
| 521 | 516 |
///very big or very small bounding boxes. |
| 522 | 517 |
/// |
| 523 | 518 |
///This (p)rescaling can be turned off with this function. |
| 524 | 519 |
/// |
| 525 | 520 |
GraphToEps<T> &preScale(bool b=true) {
|
| 526 | 521 |
_preScale=b;return *this; |
| 527 | 522 |
} |
| 528 | 523 |
|
| 529 | 524 |
///Sets a global scale factor for arc widths |
| 530 | 525 |
|
| 531 | 526 |
/// Sets a global scale factor for arc widths. |
| 532 | 527 |
/// |
| 533 | 528 |
/// If arcWidths() is not given, this function simply sets the arc |
| 534 | 529 |
/// widths to \c d. If arcWidths() is given, but |
| 535 | 530 |
/// autoArcWidthScale() is not, then the arc withs given by |
| 536 | 531 |
/// arcWidths() will be multiplied by the value \c d. |
| 537 | 532 |
/// If both arcWidths() and autoArcWidthScale() are used, then the |
| 538 | 533 |
/// arc withs will be scaled in such a way that the greatest width will be |
| 539 | 534 |
/// equal to \c d. |
| 540 | 535 |
GraphToEps<T> &arcWidthScale(double d=.003) {_arcWidthScale=d;return *this;}
|
| 541 | 536 |
///Turns on/off the automatic arc width scaling. |
| 542 | 537 |
|
| 543 | 538 |
///Turns on/off the automatic arc width scaling. |
| 544 | 539 |
/// |
| 545 | 540 |
///\sa arcWidthScale() |
| 546 | 541 |
/// |
| 547 | 542 |
GraphToEps<T> &autoArcWidthScale(bool b=true) {
|
| 548 | 543 |
_autoArcWidthScale=b;return *this; |
| 549 | 544 |
} |
| 550 | 545 |
///Turns on/off the absolutematic arc width scaling. |
| 551 | 546 |
|
| 552 | 547 |
///Turns on/off the absolutematic arc width scaling. |
| 553 | 548 |
/// |
| 554 | 549 |
///\sa arcWidthScale() |
| 555 | 550 |
/// |
| 556 | 551 |
GraphToEps<T> &absoluteArcWidths(bool b=true) {
|
| 557 | 552 |
_absoluteArcWidths=b;return *this; |
| 558 | 553 |
} |
| 559 | 554 |
///Sets a global scale factor for the whole picture |
| 560 | 555 |
GraphToEps<T> &scale(double d) {_scale=d;return *this;}
|
| 561 | 556 |
///Sets the width of the border around the picture |
| 562 | 557 |
GraphToEps<T> &border(double b=10) {_xBorder=_yBorder=b;return *this;}
|
| 563 | 558 |
///Sets the width of the border around the picture |
| 564 | 559 |
GraphToEps<T> &border(double x, double y) {
|
| 565 | 560 |
_xBorder=x;_yBorder=y;return *this; |
| 566 | 561 |
} |
| 567 | 562 |
///Sets whether to draw arrows |
| 568 | 563 |
GraphToEps<T> &drawArrows(bool b=true) {_drawArrows=b;return *this;}
|
| 569 | 564 |
///Sets the length of the arrowheads |
| 570 | 565 |
GraphToEps<T> &arrowLength(double d=1.0) {_arrowLength*=d;return *this;}
|
| 571 | 566 |
///Sets the width of the arrowheads |
| 572 | 567 |
GraphToEps<T> &arrowWidth(double d=.3) {_arrowWidth*=d;return *this;}
|
| 573 | 568 |
|
| 574 | 569 |
///Scales the drawing to fit to A4 page |
| 575 | 570 |
GraphToEps<T> &scaleToA4() {_scaleToA4=true;return *this;}
|
| 576 | 571 |
|
| 577 | 572 |
///Enables parallel arcs |
| 578 | 573 |
GraphToEps<T> &enableParallel(bool b=true) {_enableParallel=b;return *this;}
|
| 579 | 574 |
|
| 580 | 575 |
///Sets the distance between parallel arcs |
| 581 | 576 |
GraphToEps<T> &parArcDist(double d) {_parArcDist*=d;return *this;}
|
| 582 | 577 |
|
| 583 | 578 |
///Hides the arcs |
| 584 | 579 |
GraphToEps<T> &hideArcs(bool b=true) {_showArcs=!b;return *this;}
|
| 585 | 580 |
///Hides the nodes |
| 586 | 581 |
GraphToEps<T> &hideNodes(bool b=true) {_showNodes=!b;return *this;}
|
| 587 | 582 |
|
| 588 | 583 |
///Sets the size of the node texts |
| 589 | 584 |
GraphToEps<T> &nodeTextSize(double d) {_nodeTextSize=d;return *this;}
|
| 590 | 585 |
|
| 591 | 586 |
///Sets the color of the node texts to be different from the node color |
| 592 | 587 |
|
| 593 | 588 |
///Sets the color of the node texts to be as different from the node color |
| 594 | 589 |
///as it is possible. |
| 595 | 590 |
GraphToEps<T> &distantColorNodeTexts() |
| 596 | 591 |
{_nodeTextColorType=DIST_COL;return *this;}
|
| 597 | 592 |
///Sets the color of the node texts to be black or white and always visible. |
| 598 | 593 |
|
| 599 | 594 |
///Sets the color of the node texts to be black or white according to |
| 600 | 595 |
///which is more different from the node color. |
| 601 | 596 |
GraphToEps<T> &distantBWNodeTexts() |
| 602 | 597 |
{_nodeTextColorType=DIST_BW;return *this;}
|
| 603 | 598 |
|
| 604 | 599 |
///Gives a preamble block for node Postscript block. |
| 605 | 600 |
|
| 606 | 601 |
///Gives a preamble block for node Postscript block. |
| 607 | 602 |
/// |
| 608 | 603 |
///\sa nodePsTexts() |
| 609 | 604 |
GraphToEps<T> & nodePsTextsPreamble(const char *str) {
|
| 610 | 605 |
_nodePsTextsPreamble=str ;return *this; |
| 611 | 606 |
} |
| 612 | 607 |
///Sets whether the graph is undirected |
| 613 | 608 |
|
| 614 | 609 |
///Sets whether the graph is undirected. |
| 615 | 610 |
/// |
| 616 | 611 |
///This setting is the default for undirected graphs. |
| 617 | 612 |
/// |
| 618 | 613 |
///\sa directed() |
| 619 | 614 |
GraphToEps<T> &undirected(bool b=true) {_undirected=b;return *this;}
|
| 620 | 615 |
|
| 621 | 616 |
///Sets whether the graph is directed |
| 622 | 617 |
|
| 623 | 618 |
///Sets whether the graph is directed. |
| 624 | 619 |
///Use it to show the edges as a pair of directed ones. |
| 625 | 620 |
/// |
| 626 | 621 |
///This setting is the default for digraphs. |
| 627 | 622 |
/// |
| 628 | 623 |
///\sa undirected() |
| 629 | 624 |
GraphToEps<T> &directed(bool b=true) {_undirected=!b;return *this;}
|
| 630 | 625 |
|
| 631 | 626 |
///Sets the title. |
| 632 | 627 |
|
| 633 | 628 |
///Sets the title of the generated image, |
| 634 | 629 |
///namely it inserts a <tt>%%Title:</tt> DSC field to the header of |
| 635 | 630 |
///the EPS file. |
| 636 | 631 |
GraphToEps<T> &title(const std::string &t) {_title=t;return *this;}
|
| 637 | 632 |
///Sets the copyright statement. |
| 638 | 633 |
|
| 639 | 634 |
///Sets the copyright statement of the generated image, |
| 640 | 635 |
///namely it inserts a <tt>%%Copyright:</tt> DSC field to the header of |
| 641 | 636 |
///the EPS file. |
| 642 | 637 |
GraphToEps<T> ©right(const std::string &t) {_copyright=t;return *this;}
|
| 643 | 638 |
|
| 644 | 639 |
protected: |
| 645 | 640 |
bool isInsideNode(dim2::Point<double> p, double r,int t) |
| 646 | 641 |
{
|
| 647 | 642 |
switch(t) {
|
| 648 | 643 |
case CIRCLE: |
| 649 | 644 |
case MALE: |
| 650 | 645 |
case FEMALE: |
| 651 | 646 |
return p.normSquare()<=r*r; |
| 652 | 647 |
case SQUARE: |
| 653 | 648 |
return p.x<=r&&p.x>=-r&&p.y<=r&&p.y>=-r; |
| 654 | 649 |
case DIAMOND: |
| 655 | 650 |
return p.x+p.y<=r && p.x-p.y<=r && -p.x+p.y<=r && -p.x-p.y<=r; |
| 656 | 651 |
} |
| 657 | 652 |
return false; |
| 658 | 653 |
} |
| 659 | 654 |
|
| 660 | 655 |
public: |
| 661 | 656 |
~GraphToEps() { }
|
| 662 | 657 |
|
| 663 | 658 |
///Draws the graph. |
| 664 | 659 |
|
| 665 | 660 |
///Like other functions using |
| 666 | 661 |
///\ref named-templ-func-param "named template parameters", |
| 667 | 662 |
///this function calls the algorithm itself, i.e. in this case |
| 668 | 663 |
///it draws the graph. |
| 669 | 664 |
void run() {
|
| 670 | 665 |
const double EPSILON=1e-9; |
| 671 | 666 |
if(dontPrint) return; |
| 672 | 667 |
|
| 673 | 668 |
_graph_to_eps_bits::_NegY<typename T::CoordsMapType> |
| 674 | 669 |
mycoords(_coords,_negY); |
| 675 | 670 |
|
| 676 | 671 |
os << "%!PS-Adobe-2.0 EPSF-2.0\n"; |
| 677 | 672 |
if(_title.size()>0) os << "%%Title: " << _title << '\n'; |
| 678 | 673 |
if(_copyright.size()>0) os << "%%Copyright: " << _copyright << '\n'; |
| 679 | 674 |
os << "%%Creator: LEMON, graphToEps()\n"; |
| 680 | 675 |
|
| 681 | 676 |
{
|
| 677 |
os << "%%CreationDate: "; |
|
| 682 | 678 |
#ifndef WIN32 |
| 683 | 679 |
timeval tv; |
| 684 | 680 |
gettimeofday(&tv, 0); |
| 685 | 681 |
|
| 686 | 682 |
char cbuf[26]; |
| 687 | 683 |
ctime_r(&tv.tv_sec,cbuf); |
| 688 |
os << |
|
| 684 |
os << cbuf; |
|
| 689 | 685 |
#else |
| 690 |
SYSTEMTIME time; |
|
| 691 |
char buf1[11], buf2[9], buf3[5]; |
|
| 692 |
|
|
| 693 |
GetSystemTime(&time); |
|
| 694 |
if (GetDateFormat(LOCALE_USER_DEFAULT, 0, &time, |
|
| 695 |
"ddd MMM dd", buf1, 11) && |
|
| 696 |
GetTimeFormat(LOCALE_USER_DEFAULT, 0, &time, |
|
| 697 |
"HH':'mm':'ss", buf2, 9) && |
|
| 698 |
GetDateFormat(LOCALE_USER_DEFAULT, 0, &time, |
|
| 699 |
"yyyy", buf3, 5)) {
|
|
| 700 |
os << "%%CreationDate: " << buf1 << ' ' |
|
| 701 |
<< buf2 << ' ' << buf3 << std::endl; |
|
| 702 |
|
|
| 686 |
os << bits::getWinFormattedDate(); |
|
| 703 | 687 |
#endif |
| 704 | 688 |
} |
| 689 |
os << std::endl; |
|
| 705 | 690 |
|
| 706 | 691 |
if (_autoArcWidthScale) {
|
| 707 | 692 |
double max_w=0; |
| 708 | 693 |
for(ArcIt e(g);e!=INVALID;++e) |
| 709 | 694 |
max_w=std::max(double(_arcWidths[e]),max_w); |
| 710 | 695 |
if(max_w>EPSILON) {
|
| 711 | 696 |
_arcWidthScale/=max_w; |
| 712 | 697 |
} |
| 713 | 698 |
} |
| 714 | 699 |
|
| 715 | 700 |
if (_autoNodeScale) {
|
| 716 | 701 |
double max_s=0; |
| 717 | 702 |
for(NodeIt n(g);n!=INVALID;++n) |
| 718 | 703 |
max_s=std::max(double(_nodeSizes[n]),max_s); |
| 719 | 704 |
if(max_s>EPSILON) {
|
| 720 | 705 |
_nodeScale/=max_s; |
| 721 | 706 |
} |
| 722 | 707 |
} |
| 723 | 708 |
|
| 724 | 709 |
double diag_len = 1; |
| 725 | 710 |
if(!(_absoluteNodeSizes&&_absoluteArcWidths)) {
|
| 726 | 711 |
dim2::Box<double> bb; |
| 727 | 712 |
for(NodeIt n(g);n!=INVALID;++n) bb.add(mycoords[n]); |
| 728 | 713 |
if (bb.empty()) {
|
| 729 | 714 |
bb = dim2::Box<double>(dim2::Point<double>(0,0)); |
| 730 | 715 |
} |
| 731 | 716 |
diag_len = std::sqrt((bb.bottomLeft()-bb.topRight()).normSquare()); |
| 732 | 717 |
if(diag_len<EPSILON) diag_len = 1; |
| 733 | 718 |
if(!_absoluteNodeSizes) _nodeScale*=diag_len; |
| 734 | 719 |
if(!_absoluteArcWidths) _arcWidthScale*=diag_len; |
| 735 | 720 |
} |
| 736 | 721 |
|
| 737 | 722 |
dim2::Box<double> bb; |
| 738 | 723 |
for(NodeIt n(g);n!=INVALID;++n) {
|
| 739 | 724 |
double ns=_nodeSizes[n]*_nodeScale; |
| 740 | 725 |
dim2::Point<double> p(ns,ns); |
| 741 | 726 |
switch(_nodeShapes[n]) {
|
| 742 | 727 |
case CIRCLE: |
| 743 | 728 |
case SQUARE: |
| 744 | 729 |
case DIAMOND: |
| 745 | 730 |
bb.add(p+mycoords[n]); |
| 746 | 731 |
bb.add(-p+mycoords[n]); |
| 747 | 732 |
break; |
| 748 | 733 |
case MALE: |
| 749 | 734 |
bb.add(-p+mycoords[n]); |
| 750 | 735 |
bb.add(dim2::Point<double>(1.5*ns,1.5*std::sqrt(3.0)*ns)+mycoords[n]); |
| 751 | 736 |
break; |
| 752 | 737 |
case FEMALE: |
| 753 | 738 |
bb.add(p+mycoords[n]); |
| 754 | 739 |
bb.add(dim2::Point<double>(-ns,-3.01*ns)+mycoords[n]); |
| 755 | 740 |
break; |
| 756 | 741 |
} |
| 757 | 742 |
} |
| 758 | 743 |
if (bb.empty()) {
|
| 759 | 744 |
bb = dim2::Box<double>(dim2::Point<double>(0,0)); |
| 760 | 745 |
} |
| 761 | 746 |
|
| 762 | 747 |
if(_scaleToA4) |
| 763 | 748 |
os <<"%%BoundingBox: 0 0 596 842\n%%DocumentPaperSizes: a4\n"; |
| 764 | 749 |
else {
|
| 765 | 750 |
if(_preScale) {
|
| 766 | 751 |
//Rescale so that BoundingBox won't be neither to big nor too small. |
| 767 | 752 |
while(bb.height()*_scale>1000||bb.width()*_scale>1000) _scale/=10; |
| 768 | 753 |
while(bb.height()*_scale<100||bb.width()*_scale<100) _scale*=10; |
| 769 | 754 |
} |
| 770 | 755 |
|
| 771 | 756 |
os << "%%BoundingBox: " |
| 772 | 757 |
<< int(floor(bb.left() * _scale - _xBorder)) << ' ' |
| 773 | 758 |
<< int(floor(bb.bottom() * _scale - _yBorder)) << ' ' |
| 774 | 759 |
<< int(ceil(bb.right() * _scale + _xBorder)) << ' ' |
| 775 | 760 |
<< int(ceil(bb.top() * _scale + _yBorder)) << '\n'; |
| 776 | 761 |
} |
| 777 | 762 |
|
| 778 | 763 |
os << "%%EndComments\n"; |
| 779 | 764 |
|
| 780 | 765 |
//x1 y1 x2 y2 x3 y3 cr cg cb w |
| 781 | 766 |
os << "/lb { setlinewidth setrgbcolor newpath moveto\n"
|
| 782 | 767 |
<< " 4 2 roll 1 index 1 index curveto stroke } bind def\n"; |
| 783 | 768 |
os << "/l { setlinewidth setrgbcolor newpath moveto lineto stroke }"
|
| 784 | 769 |
<< " bind def\n"; |
| 785 | 770 |
//x y r |
| 786 | 771 |
os << "/c { newpath dup 3 index add 2 index moveto 0 360 arc closepath }"
|
| 787 | 772 |
<< " bind def\n"; |
| 788 | 773 |
//x y r |
| 789 | 774 |
os << "/sq { newpath 2 index 1 index add 2 index 2 index add moveto\n"
|
| 790 | 775 |
<< " 2 index 1 index sub 2 index 2 index add lineto\n" |
| 791 | 776 |
<< " 2 index 1 index sub 2 index 2 index sub lineto\n" |
| 792 | 777 |
<< " 2 index 1 index add 2 index 2 index sub lineto\n" |
| 793 | 778 |
<< " closepath pop pop pop} bind def\n"; |
| 794 | 779 |
//x y r |
| 795 | 780 |
os << "/di { newpath 2 index 1 index add 2 index moveto\n"
|
| 796 | 781 |
<< " 2 index 2 index 2 index add lineto\n" |
| 797 | 782 |
<< " 2 index 1 index sub 2 index lineto\n" |
| 798 | 783 |
<< " 2 index 2 index 2 index sub lineto\n" |
| 799 | 784 |
<< " closepath pop pop pop} bind def\n"; |
| 800 | 785 |
// x y r cr cg cb |
| 801 | 786 |
os << "/nc { 0 0 0 setrgbcolor 5 index 5 index 5 index c fill\n"
|
| 802 | 787 |
<< " setrgbcolor " << 1+_nodeBorderQuotient << " div c fill\n" |
| 803 | 788 |
<< " } bind def\n"; |
| 804 | 789 |
os << "/nsq { 0 0 0 setrgbcolor 5 index 5 index 5 index sq fill\n"
|
| 805 | 790 |
<< " setrgbcolor " << 1+_nodeBorderQuotient << " div sq fill\n" |
| 806 | 791 |
<< " } bind def\n"; |
| 807 | 792 |
os << "/ndi { 0 0 0 setrgbcolor 5 index 5 index 5 index di fill\n"
|
| 808 | 793 |
<< " setrgbcolor " << 1+_nodeBorderQuotient << " div di fill\n" |
| 809 | 794 |
<< " } bind def\n"; |
| 810 | 795 |
os << "/nfemale { 0 0 0 setrgbcolor 3 index "
|
| 811 | 796 |
<< _nodeBorderQuotient/(1+_nodeBorderQuotient) |
| 812 | 797 |
<< " 1.5 mul mul setlinewidth\n" |
| 813 | 798 |
<< " newpath 5 index 5 index moveto " |
| 814 | 799 |
<< "5 index 5 index 5 index 3.01 mul sub\n" |
| 815 | 800 |
<< " lineto 5 index 4 index .7 mul sub 5 index 5 index 2.2 mul sub" |
| 816 | 801 |
<< " moveto\n" |
| 817 | 802 |
<< " 5 index 4 index .7 mul add 5 index 5 index 2.2 mul sub lineto " |
| 818 | 803 |
<< "stroke\n" |
| 819 | 804 |
<< " 5 index 5 index 5 index c fill\n" |
| 820 | 805 |
<< " setrgbcolor " << 1+_nodeBorderQuotient << " div c fill\n" |
| 821 | 806 |
<< " } bind def\n"; |
| 822 | 807 |
os << "/nmale {\n"
|
| 823 | 808 |
<< " 0 0 0 setrgbcolor 3 index " |
| 824 | 809 |
<< _nodeBorderQuotient/(1+_nodeBorderQuotient) |
| 825 | 810 |
<<" 1.5 mul mul setlinewidth\n" |
| 826 | 811 |
<< " newpath 5 index 5 index moveto\n" |
| 827 | 812 |
<< " 5 index 4 index 1 mul 1.5 mul add\n" |
| 828 | 813 |
<< " 5 index 5 index 3 sqrt 1.5 mul mul add\n" |
| 829 | 814 |
<< " 1 index 1 index lineto\n" |
| 830 | 815 |
<< " 1 index 1 index 7 index sub moveto\n" |
| 831 | 816 |
<< " 1 index 1 index lineto\n" |
| 832 | 817 |
<< " exch 5 index 3 sqrt .5 mul mul sub exch 5 index .5 mul sub" |
| 833 | 818 |
<< " lineto\n" |
| 834 | 819 |
<< " stroke\n" |
| 835 | 820 |
<< " 5 index 5 index 5 index c fill\n" |
| 836 | 821 |
<< " setrgbcolor " << 1+_nodeBorderQuotient << " div c fill\n" |
| 837 | 822 |
<< " } bind def\n"; |
| 838 | 823 |
|
| 839 | 824 |
|
| 840 | 825 |
os << "/arrl " << _arrowLength << " def\n"; |
| 841 | 826 |
os << "/arrw " << _arrowWidth << " def\n"; |
| 842 | 827 |
// l dx_norm dy_norm |
| 843 | 828 |
os << "/lrl { 2 index mul exch 2 index mul exch rlineto pop} bind def\n";
|
| 844 | 829 |
//len w dx_norm dy_norm x1 y1 cr cg cb |
| 845 | 830 |
os << "/arr { setrgbcolor /y1 exch def /x1 exch def /dy exch def /dx "
|
| 846 | 831 |
<< "exch def\n" |
| 847 | 832 |
<< " /w exch def /len exch def\n" |
| 848 | 833 |
//<< "0.1 setlinewidth x1 y1 moveto dx len mul dy len mul rlineto stroke" |
| 849 | 834 |
<< " newpath x1 dy w 2 div mul add y1 dx w 2 div mul sub moveto\n" |
| 850 | 835 |
<< " len w sub arrl sub dx dy lrl\n" |
| 851 | 836 |
<< " arrw dy dx neg lrl\n" |
| 852 | 837 |
<< " dx arrl w add mul dy w 2 div arrw add mul sub\n" |
| 853 | 838 |
<< " dy arrl w add mul dx w 2 div arrw add mul add rlineto\n" |
| 854 | 839 |
<< " dx arrl w add mul neg dy w 2 div arrw add mul sub\n" |
| 855 | 840 |
<< " dy arrl w add mul neg dx w 2 div arrw add mul add rlineto\n" |
| 856 | 841 |
<< " arrw dy dx neg lrl\n" |
| 857 | 842 |
<< " len w sub arrl sub neg dx dy lrl\n" |
| 858 | 843 |
<< " closepath fill } bind def\n"; |
| 859 | 844 |
os << "/cshow { 2 index 2 index moveto dup stringwidth pop\n"
|
| 860 | 845 |
<< " neg 2 div fosi .35 mul neg rmoveto show pop pop} def\n"; |
| 861 | 846 |
|
| 862 | 847 |
os << "\ngsave\n"; |
| 863 | 848 |
if(_scaleToA4) |
| 864 | 849 |
if(bb.height()>bb.width()) {
|
| 865 | 850 |
double sc= std::min((A4HEIGHT-2*A4BORDER)/bb.height(), |
| 866 | 851 |
(A4WIDTH-2*A4BORDER)/bb.width()); |
| 867 | 852 |
os << ((A4WIDTH -2*A4BORDER)-sc*bb.width())/2 + A4BORDER << ' ' |
| 868 | 853 |
<< ((A4HEIGHT-2*A4BORDER)-sc*bb.height())/2 + A4BORDER |
| 869 | 854 |
<< " translate\n" |
| 870 | 855 |
<< sc << " dup scale\n" |
| 871 | 856 |
<< -bb.left() << ' ' << -bb.bottom() << " translate\n"; |
| 872 | 857 |
} |
| 873 | 858 |
else {
|
| 874 | 859 |
double sc= std::min((A4HEIGHT-2*A4BORDER)/bb.width(), |
| 875 | 860 |
(A4WIDTH-2*A4BORDER)/bb.height()); |
| 876 | 861 |
os << ((A4WIDTH -2*A4BORDER)-sc*bb.height())/2 + A4BORDER << ' ' |
| 877 | 862 |
<< ((A4HEIGHT-2*A4BORDER)-sc*bb.width())/2 + A4BORDER |
| 878 | 863 |
<< " translate\n" |
| 879 | 864 |
<< sc << " dup scale\n90 rotate\n" |
| 880 | 865 |
<< -bb.left() << ' ' << -bb.top() << " translate\n"; |
| 881 | 866 |
} |
| 882 | 867 |
else if(_scale!=1.0) os << _scale << " dup scale\n"; |
| 883 | 868 |
|
| 884 | 869 |
if(_showArcs) {
|
| 885 | 870 |
os << "%Arcs:\ngsave\n"; |
| 886 | 871 |
if(_enableParallel) {
|
| 887 | 872 |
std::vector<Arc> el; |
| 888 | 873 |
for(ArcIt e(g);e!=INVALID;++e) |
| 889 | 874 |
if((!_undirected||g.source(e)<g.target(e))&&_arcWidths[e]>0 |
| 890 | 875 |
&&g.source(e)!=g.target(e)) |
| 891 | 876 |
el.push_back(e); |
| 892 | 877 |
std::sort(el.begin(),el.end(),arcLess(g)); |
| 893 | 878 |
|
| 894 | 879 |
typename std::vector<Arc>::iterator j; |
| 895 | 880 |
for(typename std::vector<Arc>::iterator i=el.begin();i!=el.end();i=j) {
|
| 896 | 881 |
for(j=i+1;j!=el.end()&&isParallel(*i,*j);++j) ; |
| 897 | 882 |
|
| 898 | 883 |
double sw=0; |
| 899 | 884 |
for(typename std::vector<Arc>::iterator e=i;e!=j;++e) |
| 900 | 885 |
sw+=_arcWidths[*e]*_arcWidthScale+_parArcDist; |
| 901 | 886 |
sw-=_parArcDist; |
| 902 | 887 |
sw/=-2.0; |
| 903 | 888 |
dim2::Point<double> |
| 904 | 889 |
dvec(mycoords[g.target(*i)]-mycoords[g.source(*i)]); |
| 905 | 890 |
double l=std::sqrt(dvec.normSquare()); |
| 906 | 891 |
dim2::Point<double> d(dvec/std::max(l,EPSILON)); |
| 907 | 892 |
dim2::Point<double> m; |
| 908 | 893 |
// m=dim2::Point<double>(mycoords[g.target(*i)]+ |
| 909 | 894 |
// mycoords[g.source(*i)])/2.0; |
| 910 | 895 |
|
| 911 | 896 |
// m=dim2::Point<double>(mycoords[g.source(*i)])+ |
| 912 | 897 |
// dvec*(double(_nodeSizes[g.source(*i)])/ |
| 913 | 898 |
// (_nodeSizes[g.source(*i)]+_nodeSizes[g.target(*i)])); |
| 914 | 899 |
|
| 915 | 900 |
m=dim2::Point<double>(mycoords[g.source(*i)])+ |
| 916 | 901 |
d*(l+_nodeSizes[g.source(*i)]-_nodeSizes[g.target(*i)])/2.0; |
| 917 | 902 |
|
| 918 | 903 |
for(typename std::vector<Arc>::iterator e=i;e!=j;++e) {
|
| 919 | 904 |
sw+=_arcWidths[*e]*_arcWidthScale/2.0; |
| 920 | 905 |
dim2::Point<double> mm=m+rot90(d)*sw/.75; |
| 921 | 906 |
if(_drawArrows) {
|
| 922 | 907 |
int node_shape; |
| 923 | 908 |
dim2::Point<double> s=mycoords[g.source(*e)]; |
| 924 | 909 |
dim2::Point<double> t=mycoords[g.target(*e)]; |
| 925 | 910 |
double rn=_nodeSizes[g.target(*e)]*_nodeScale; |
| 926 | 911 |
node_shape=_nodeShapes[g.target(*e)]; |
| 927 | 912 |
dim2::Bezier3 bez(s,mm,mm,t); |
| 928 | 913 |
double t1=0,t2=1; |
| 929 | 914 |
for(int ii=0;ii<INTERPOL_PREC;++ii) |
| 930 | 915 |
if(isInsideNode(bez((t1+t2)/2)-t,rn,node_shape)) t2=(t1+t2)/2; |
| 931 | 916 |
else t1=(t1+t2)/2; |
| 932 | 917 |
dim2::Point<double> apoint=bez((t1+t2)/2); |
| 933 | 918 |
rn = _arrowLength+_arcWidths[*e]*_arcWidthScale; |
| 934 | 919 |
rn*=rn; |
| 935 | 920 |
t2=(t1+t2)/2;t1=0; |
| 936 | 921 |
for(int ii=0;ii<INTERPOL_PREC;++ii) |
| 937 | 922 |
if((bez((t1+t2)/2)-apoint).normSquare()>rn) t1=(t1+t2)/2; |
| 938 | 923 |
else t2=(t1+t2)/2; |
| 939 | 924 |
dim2::Point<double> linend=bez((t1+t2)/2); |
| 940 | 925 |
bez=bez.before((t1+t2)/2); |
| 941 | 926 |
// rn=_nodeSizes[g.source(*e)]*_nodeScale; |
| 942 | 927 |
// node_shape=_nodeShapes[g.source(*e)]; |
| 943 | 928 |
// t1=0;t2=1; |
| 944 | 929 |
// for(int i=0;i<INTERPOL_PREC;++i) |
| 945 | 930 |
// if(isInsideNode(bez((t1+t2)/2)-t,rn,node_shape)) |
| 946 | 931 |
// t1=(t1+t2)/2; |
| 947 | 932 |
// else t2=(t1+t2)/2; |
| 948 | 933 |
// bez=bez.after((t1+t2)/2); |
| 949 | 934 |
os << _arcWidths[*e]*_arcWidthScale << " setlinewidth " |
| 950 | 935 |
<< _arcColors[*e].red() << ' ' |
| 951 | 936 |
<< _arcColors[*e].green() << ' ' |
| 952 | 937 |
<< _arcColors[*e].blue() << " setrgbcolor newpath\n" |
| 953 | 938 |
<< bez.p1.x << ' ' << bez.p1.y << " moveto\n" |
| 954 | 939 |
<< bez.p2.x << ' ' << bez.p2.y << ' ' |
| 955 | 940 |
<< bez.p3.x << ' ' << bez.p3.y << ' ' |
| 956 | 941 |
<< bez.p4.x << ' ' << bez.p4.y << " curveto stroke\n"; |
| 957 | 942 |
dim2::Point<double> dd(rot90(linend-apoint)); |
| 958 | 943 |
dd*=(.5*_arcWidths[*e]*_arcWidthScale+_arrowWidth)/ |
| 959 | 944 |
std::sqrt(dd.normSquare()); |
| 960 | 945 |
os << "newpath " << psOut(apoint) << " moveto " |
| 961 | 946 |
<< psOut(linend+dd) << " lineto " |
| 962 | 947 |
<< psOut(linend-dd) << " lineto closepath fill\n"; |
| 963 | 948 |
} |
| 964 | 949 |
else {
|
| 965 | 950 |
os << mycoords[g.source(*e)].x << ' ' |
| 966 | 951 |
<< mycoords[g.source(*e)].y << ' ' |
| 967 | 952 |
<< mm.x << ' ' << mm.y << ' ' |
| 968 | 953 |
<< mycoords[g.target(*e)].x << ' ' |
| 969 | 954 |
<< mycoords[g.target(*e)].y << ' ' |
| 970 | 955 |
<< _arcColors[*e].red() << ' ' |
| 971 | 956 |
<< _arcColors[*e].green() << ' ' |
| 972 | 957 |
<< _arcColors[*e].blue() << ' ' |
| 973 | 958 |
<< _arcWidths[*e]*_arcWidthScale << " lb\n"; |
| 974 | 959 |
} |
| 975 | 960 |
sw+=_arcWidths[*e]*_arcWidthScale/2.0+_parArcDist; |
| 976 | 961 |
} |
| 977 | 962 |
} |
| 978 | 963 |
} |
| 979 | 964 |
else for(ArcIt e(g);e!=INVALID;++e) |
| 980 | 965 |
if((!_undirected||g.source(e)<g.target(e))&&_arcWidths[e]>0 |
| 981 | 966 |
&&g.source(e)!=g.target(e)) {
|
| 982 | 967 |
if(_drawArrows) {
|
| 983 | 968 |
dim2::Point<double> d(mycoords[g.target(e)]-mycoords[g.source(e)]); |
| 984 | 969 |
double rn=_nodeSizes[g.target(e)]*_nodeScale; |
| 985 | 970 |
int node_shape=_nodeShapes[g.target(e)]; |
| 986 | 971 |
double t1=0,t2=1; |
| 987 | 972 |
for(int i=0;i<INTERPOL_PREC;++i) |
| 988 | 973 |
if(isInsideNode((-(t1+t2)/2)*d,rn,node_shape)) t1=(t1+t2)/2; |
| 989 | 974 |
else t2=(t1+t2)/2; |
| 990 | 975 |
double l=std::sqrt(d.normSquare()); |
| 991 | 976 |
d/=l; |
| 992 | 977 |
|
| 993 | 978 |
os << l*(1-(t1+t2)/2) << ' ' |
| 994 | 979 |
<< _arcWidths[e]*_arcWidthScale << ' ' |
| 995 | 980 |
<< d.x << ' ' << d.y << ' ' |
| 996 | 981 |
<< mycoords[g.source(e)].x << ' ' |
| 997 | 982 |
<< mycoords[g.source(e)].y << ' ' |
| 998 | 983 |
<< _arcColors[e].red() << ' ' |
| 999 | 984 |
<< _arcColors[e].green() << ' ' |
| 1000 | 985 |
<< _arcColors[e].blue() << " arr\n"; |
| 1001 | 986 |
} |
| 1002 | 987 |
else os << mycoords[g.source(e)].x << ' ' |
| 1003 | 988 |
<< mycoords[g.source(e)].y << ' ' |
| 1004 | 989 |
<< mycoords[g.target(e)].x << ' ' |
| 1005 | 990 |
<< mycoords[g.target(e)].y << ' ' |
| 1006 | 991 |
<< _arcColors[e].red() << ' ' |
| 1007 | 992 |
<< _arcColors[e].green() << ' ' |
| 1008 | 993 |
<< _arcColors[e].blue() << ' ' |
| 1009 | 994 |
<< _arcWidths[e]*_arcWidthScale << " l\n"; |
| 1010 | 995 |
} |
| 1011 | 996 |
os << "grestore\n"; |
| 1012 | 997 |
} |
| 1013 | 998 |
if(_showNodes) {
|
| 1014 | 999 |
os << "%Nodes:\ngsave\n"; |
| 1015 | 1000 |
for(NodeIt n(g);n!=INVALID;++n) {
|
| 1016 | 1001 |
os << mycoords[n].x << ' ' << mycoords[n].y << ' ' |
| 1017 | 1002 |
<< _nodeSizes[n]*_nodeScale << ' ' |
| 1018 | 1003 |
<< _nodeColors[n].red() << ' ' |
| 1019 | 1004 |
<< _nodeColors[n].green() << ' ' |
| 1020 | 1005 |
<< _nodeColors[n].blue() << ' '; |
| 1021 | 1006 |
switch(_nodeShapes[n]) {
|
| 1022 | 1007 |
case CIRCLE: |
| 1023 | 1008 |
os<< "nc";break; |
| 1024 | 1009 |
case SQUARE: |
| 1025 | 1010 |
os<< "nsq";break; |
| 1026 | 1011 |
case DIAMOND: |
| 1027 | 1012 |
os<< "ndi";break; |
| 1028 | 1013 |
case MALE: |
| 1029 | 1014 |
os<< "nmale";break; |
| 1030 | 1015 |
case FEMALE: |
| 1031 | 1016 |
os<< "nfemale";break; |
| 1032 | 1017 |
} |
| 1033 | 1018 |
os<<'\n'; |
| 1034 | 1019 |
} |
| 1035 | 1020 |
os << "grestore\n"; |
| 1036 | 1021 |
} |
| 1037 | 1022 |
if(_showNodeText) {
|
| 1038 | 1023 |
os << "%Node texts:\ngsave\n"; |
| 1039 | 1024 |
os << "/fosi " << _nodeTextSize << " def\n"; |
| 1040 | 1025 |
os << "(Helvetica) findfont fosi scalefont setfont\n"; |
| 1041 | 1026 |
for(NodeIt n(g);n!=INVALID;++n) {
|
| 1042 | 1027 |
switch(_nodeTextColorType) {
|
| 1043 | 1028 |
case DIST_COL: |
| 1044 | 1029 |
os << psOut(distantColor(_nodeColors[n])) << " setrgbcolor\n"; |
| 1045 | 1030 |
break; |
| 1046 | 1031 |
case DIST_BW: |
| 1047 | 1032 |
os << psOut(distantBW(_nodeColors[n])) << " setrgbcolor\n"; |
| 1048 | 1033 |
break; |
| 1049 | 1034 |
case CUST_COL: |
| 1050 | 1035 |
os << psOut(distantColor(_nodeTextColors[n])) << " setrgbcolor\n"; |
| 1051 | 1036 |
break; |
| 1052 | 1037 |
default: |
| 1053 | 1038 |
os << "0 0 0 setrgbcolor\n"; |
| 1054 | 1039 |
} |
| 1055 | 1040 |
os << mycoords[n].x << ' ' << mycoords[n].y |
| 1056 | 1041 |
<< " (" << _nodeTexts[n] << ") cshow\n";
|
| 1057 | 1042 |
} |
| 1058 | 1043 |
os << "grestore\n"; |
| 1059 | 1044 |
} |
| 1060 | 1045 |
if(_showNodePsText) {
|
| 1061 | 1046 |
os << "%Node PS blocks:\ngsave\n"; |
| 1062 | 1047 |
for(NodeIt n(g);n!=INVALID;++n) |
| 1063 | 1048 |
os << mycoords[n].x << ' ' << mycoords[n].y |
| 1064 | 1049 |
<< " moveto\n" << _nodePsTexts[n] << "\n"; |
| 1065 | 1050 |
os << "grestore\n"; |
| 1066 | 1051 |
} |
| 1067 | 1052 |
|
| 1068 | 1053 |
os << "grestore\nshowpage\n"; |
| 1069 | 1054 |
|
| 1070 | 1055 |
//CleanUp: |
| 1071 | 1056 |
if(_pleaseRemoveOsStream) {delete &os;}
|
| 1072 | 1057 |
} |
| 1073 | 1058 |
|
| 1074 | 1059 |
///\name Aliases |
| 1075 | 1060 |
///These are just some aliases to other parameter setting functions. |
| 1076 | 1061 |
|
| 1077 | 1062 |
///@{
|
| 1078 | 1063 |
|
| 1079 | 1064 |
///An alias for arcWidths() |
| 1080 | 1065 |
template<class X> GraphToEps<ArcWidthsTraits<X> > edgeWidths(const X &x) |
| 1081 | 1066 |
{
|
| 1082 | 1067 |
return arcWidths(x); |
| 1083 | 1068 |
} |
| 1084 | 1069 |
|
| 1085 | 1070 |
///An alias for arcColors() |
| 1086 | 1071 |
template<class X> GraphToEps<ArcColorsTraits<X> > |
| 1087 | 1072 |
edgeColors(const X &x) |
| 1088 | 1073 |
{
|
| 1089 | 1074 |
return arcColors(x); |
| 1090 | 1075 |
} |
| 1091 | 1076 |
|
| 1092 | 1077 |
///An alias for arcWidthScale() |
| 1093 | 1078 |
GraphToEps<T> &edgeWidthScale(double d) {return arcWidthScale(d);}
|
| 1094 | 1079 |
|
| 1095 | 1080 |
///An alias for autoArcWidthScale() |
| 1096 | 1081 |
GraphToEps<T> &autoEdgeWidthScale(bool b=true) |
| 1097 | 1082 |
{
|
| 1098 | 1083 |
return autoArcWidthScale(b); |
| 1099 | 1084 |
} |
| 1100 | 1085 |
|
| 1101 | 1086 |
///An alias for absoluteArcWidths() |
| 1102 | 1087 |
GraphToEps<T> &absoluteEdgeWidths(bool b=true) |
| 1103 | 1088 |
{
|
| 1104 | 1089 |
return absoluteArcWidths(b); |
| 1105 | 1090 |
} |
| 1106 | 1091 |
|
| 1107 | 1092 |
///An alias for parArcDist() |
| 1108 | 1093 |
GraphToEps<T> &parEdgeDist(double d) {return parArcDist(d);}
|
| 1109 | 1094 |
|
| 1110 | 1095 |
///An alias for hideArcs() |
| 1111 | 1096 |
GraphToEps<T> &hideEdges(bool b=true) {return hideArcs(b);}
|
| 1112 | 1097 |
|
| 1113 | 1098 |
///@} |
| 1114 | 1099 |
}; |
| 1115 | 1100 |
|
| 1116 | 1101 |
template<class T> |
| 1117 | 1102 |
const int GraphToEps<T>::INTERPOL_PREC = 20; |
| 1118 | 1103 |
template<class T> |
| 1119 | 1104 |
const double GraphToEps<T>::A4HEIGHT = 841.8897637795276; |
| 1120 | 1105 |
template<class T> |
| 1121 | 1106 |
const double GraphToEps<T>::A4WIDTH = 595.275590551181; |
| 1122 | 1107 |
template<class T> |
| 1123 | 1108 |
const double GraphToEps<T>::A4BORDER = 15; |
| 1124 | 1109 |
|
| 1125 | 1110 |
|
| 1126 | 1111 |
///Generates an EPS file from a graph |
| 1127 | 1112 |
|
| 1128 | 1113 |
///\ingroup eps_io |
| 1129 | 1114 |
///Generates an EPS file from a graph. |
| 1130 | 1115 |
///\param g Reference to the graph to be printed. |
| 1131 | 1116 |
///\param os Reference to the output stream. |
| 1132 | 1117 |
///By default it is <tt>std::cout</tt>. |
| 1133 | 1118 |
/// |
| 1134 | 1119 |
///This function also has a lot of |
| 1135 | 1120 |
///\ref named-templ-func-param "named parameters", |
| 1136 | 1121 |
///they are declared as the members of class \ref GraphToEps. The following |
| 1137 | 1122 |
///example shows how to use these parameters. |
| 1138 | 1123 |
///\code |
| 1139 | 1124 |
/// graphToEps(g,os).scale(10).coords(coords) |
| 1140 | 1125 |
/// .nodeScale(2).nodeSizes(sizes) |
| 1141 | 1126 |
/// .arcWidthScale(.4).run(); |
| 1142 | 1127 |
///\endcode |
| 1143 | 1128 |
/// |
| 1144 | 1129 |
///For more detailed examples see the \ref graph_to_eps_demo.cc demo file. |
| 1145 | 1130 |
/// |
| 1146 | 1131 |
///\warning Don't forget to put the \ref GraphToEps::run() "run()" |
| 1147 | 1132 |
///to the end of the parameter list. |
| 1148 | 1133 |
///\sa GraphToEps |
| 1149 |
///\sa graphToEps(G &g, const char *file_name) |
|
| 1150 |
template<class G> |
|
| 1151 |
GraphToEps<DefaultGraphToEpsTraits<G> > |
|
| 1152 |
graphToEps(G &g, std::ostream& os=std::cout) |
|
| 1134 |
///\sa graphToEps(GR &g, const char *file_name) |
|
| 1135 |
template<class GR> |
|
| 1136 |
GraphToEps<DefaultGraphToEpsTraits<GR> > |
|
| 1137 |
graphToEps(GR &g, std::ostream& os=std::cout) |
|
| 1153 | 1138 |
{
|
| 1154 | 1139 |
return |
| 1155 |
GraphToEps<DefaultGraphToEpsTraits< |
|
| 1140 |
GraphToEps<DefaultGraphToEpsTraits<GR> >(DefaultGraphToEpsTraits<GR>(g,os)); |
|
| 1156 | 1141 |
} |
| 1157 | 1142 |
|
| 1158 | 1143 |
///Generates an EPS file from a graph |
| 1159 | 1144 |
|
| 1160 | 1145 |
///\ingroup eps_io |
| 1161 | 1146 |
///This function does the same as |
| 1162 |
///\ref graphToEps( |
|
| 1147 |
///\ref graphToEps(GR &g,std::ostream& os) |
|
| 1163 | 1148 |
///but it writes its output into the file \c file_name |
| 1164 | 1149 |
///instead of a stream. |
| 1165 |
///\sa graphToEps(G &g, std::ostream& os) |
|
| 1166 |
template<class G> |
|
| 1167 |
GraphToEps<DefaultGraphToEpsTraits<G> > |
|
| 1168 |
graphToEps(G &g,const char *file_name) |
|
| 1150 |
///\sa graphToEps(GR &g, std::ostream& os) |
|
| 1151 |
template<class GR> |
|
| 1152 |
GraphToEps<DefaultGraphToEpsTraits<GR> > |
|
| 1153 |
graphToEps(GR &g,const char *file_name) |
|
| 1169 | 1154 |
{
|
| 1170 | 1155 |
std::ostream* os = new std::ofstream(file_name); |
| 1171 | 1156 |
if (!(*os)) {
|
| 1172 | 1157 |
delete os; |
| 1173 | 1158 |
throw IoError("Cannot write file", file_name);
|
| 1174 | 1159 |
} |
| 1175 |
return GraphToEps<DefaultGraphToEpsTraits<G> > |
|
| 1176 |
(DefaultGraphToEpsTraits<G>(g,*os,true)); |
|
| 1160 |
return GraphToEps<DefaultGraphToEpsTraits<GR> > |
|
| 1161 |
(DefaultGraphToEpsTraits<GR>(g,*os,true)); |
|
| 1177 | 1162 |
} |
| 1178 | 1163 |
|
| 1179 | 1164 |
///Generates an EPS file from a graph |
| 1180 | 1165 |
|
| 1181 | 1166 |
///\ingroup eps_io |
| 1182 | 1167 |
///This function does the same as |
| 1183 |
///\ref graphToEps( |
|
| 1168 |
///\ref graphToEps(GR &g,std::ostream& os) |
|
| 1184 | 1169 |
///but it writes its output into the file \c file_name |
| 1185 | 1170 |
///instead of a stream. |
| 1186 |
///\sa graphToEps(G &g, std::ostream& os) |
|
| 1187 |
template<class G> |
|
| 1188 |
GraphToEps<DefaultGraphToEpsTraits<G> > |
|
| 1189 |
graphToEps(G &g,const std::string& file_name) |
|
| 1171 |
///\sa graphToEps(GR &g, std::ostream& os) |
|
| 1172 |
template<class GR> |
|
| 1173 |
GraphToEps<DefaultGraphToEpsTraits<GR> > |
|
| 1174 |
graphToEps(GR &g,const std::string& file_name) |
|
| 1190 | 1175 |
{
|
| 1191 | 1176 |
std::ostream* os = new std::ofstream(file_name.c_str()); |
| 1192 | 1177 |
if (!(*os)) {
|
| 1193 | 1178 |
delete os; |
| 1194 | 1179 |
throw IoError("Cannot write file", file_name);
|
| 1195 | 1180 |
} |
| 1196 |
return GraphToEps<DefaultGraphToEpsTraits<G> > |
|
| 1197 |
(DefaultGraphToEpsTraits<G>(g,*os,true)); |
|
| 1181 |
return GraphToEps<DefaultGraphToEpsTraits<GR> > |
|
| 1182 |
(DefaultGraphToEpsTraits<GR>(g,*os,true)); |
|
| 1198 | 1183 |
} |
| 1199 | 1184 |
|
| 1200 | 1185 |
} //END OF NAMESPACE LEMON |
| 1201 | 1186 |
|
| 1202 | 1187 |
#endif // LEMON_GRAPH_TO_EPS_H |
| ... | ... |
@@ -89,617 +89,609 @@ |
| 89 | 89 |
int edgeNum() const { return _edge_num; }
|
| 90 | 90 |
int arcNum() const { return 2 * _edge_num; }
|
| 91 | 91 |
|
| 92 | 92 |
Node u(Edge edge) const {
|
| 93 | 93 |
if (edge._id < _edge_limit) {
|
| 94 | 94 |
return edge._id; |
| 95 | 95 |
} else {
|
| 96 | 96 |
return (edge._id - _edge_limit) % (_width - 1) + |
| 97 | 97 |
(edge._id - _edge_limit) / (_width - 1) * _width; |
| 98 | 98 |
} |
| 99 | 99 |
} |
| 100 | 100 |
|
| 101 | 101 |
Node v(Edge edge) const {
|
| 102 | 102 |
if (edge._id < _edge_limit) {
|
| 103 | 103 |
return edge._id + _width; |
| 104 | 104 |
} else {
|
| 105 | 105 |
return (edge._id - _edge_limit) % (_width - 1) + |
| 106 | 106 |
(edge._id - _edge_limit) / (_width - 1) * _width + 1; |
| 107 | 107 |
} |
| 108 | 108 |
} |
| 109 | 109 |
|
| 110 | 110 |
Node source(Arc arc) const {
|
| 111 | 111 |
return (arc._id & 1) == 1 ? u(arc) : v(arc); |
| 112 | 112 |
} |
| 113 | 113 |
|
| 114 | 114 |
Node target(Arc arc) const {
|
| 115 | 115 |
return (arc._id & 1) == 1 ? v(arc) : u(arc); |
| 116 | 116 |
} |
| 117 | 117 |
|
| 118 | 118 |
static int id(Node node) { return node._id; }
|
| 119 | 119 |
static int id(Edge edge) { return edge._id; }
|
| 120 | 120 |
static int id(Arc arc) { return arc._id; }
|
| 121 | 121 |
|
| 122 | 122 |
int maxNodeId() const { return _node_num - 1; }
|
| 123 | 123 |
int maxEdgeId() const { return _edge_num - 1; }
|
| 124 | 124 |
int maxArcId() const { return 2 * _edge_num - 1; }
|
| 125 | 125 |
|
| 126 | 126 |
static Node nodeFromId(int id) { return Node(id);}
|
| 127 | 127 |
static Edge edgeFromId(int id) { return Edge(id);}
|
| 128 | 128 |
static Arc arcFromId(int id) { return Arc(id);}
|
| 129 | 129 |
|
| 130 | 130 |
typedef True FindEdgeTag; |
| 131 | 131 |
typedef True FindArcTag; |
| 132 | 132 |
|
| 133 | 133 |
Edge findEdge(Node u, Node v, Edge prev = INVALID) const {
|
| 134 | 134 |
if (prev != INVALID) return INVALID; |
| 135 | 135 |
if (v._id > u._id) {
|
| 136 | 136 |
if (v._id - u._id == _width) |
| 137 | 137 |
return Edge(u._id); |
| 138 | 138 |
if (v._id - u._id == 1 && u._id % _width < _width - 1) {
|
| 139 | 139 |
return Edge(u._id / _width * (_width - 1) + |
| 140 | 140 |
u._id % _width + _edge_limit); |
| 141 | 141 |
} |
| 142 | 142 |
} else {
|
| 143 | 143 |
if (u._id - v._id == _width) |
| 144 | 144 |
return Edge(v._id); |
| 145 | 145 |
if (u._id - v._id == 1 && v._id % _width < _width - 1) {
|
| 146 | 146 |
return Edge(v._id / _width * (_width - 1) + |
| 147 | 147 |
v._id % _width + _edge_limit); |
| 148 | 148 |
} |
| 149 | 149 |
} |
| 150 | 150 |
return INVALID; |
| 151 | 151 |
} |
| 152 | 152 |
|
| 153 | 153 |
Arc findArc(Node u, Node v, Arc prev = INVALID) const {
|
| 154 | 154 |
if (prev != INVALID) return INVALID; |
| 155 | 155 |
if (v._id > u._id) {
|
| 156 | 156 |
if (v._id - u._id == _width) |
| 157 | 157 |
return Arc((u._id << 1) | 1); |
| 158 | 158 |
if (v._id - u._id == 1 && u._id % _width < _width - 1) {
|
| 159 | 159 |
return Arc(((u._id / _width * (_width - 1) + |
| 160 | 160 |
u._id % _width + _edge_limit) << 1) | 1); |
| 161 | 161 |
} |
| 162 | 162 |
} else {
|
| 163 | 163 |
if (u._id - v._id == _width) |
| 164 | 164 |
return Arc(v._id << 1); |
| 165 | 165 |
if (u._id - v._id == 1 && v._id % _width < _width - 1) {
|
| 166 | 166 |
return Arc((v._id / _width * (_width - 1) + |
| 167 | 167 |
v._id % _width + _edge_limit) << 1); |
| 168 | 168 |
} |
| 169 | 169 |
} |
| 170 | 170 |
return INVALID; |
| 171 | 171 |
} |
| 172 | 172 |
|
| 173 | 173 |
class Node {
|
| 174 | 174 |
friend class GridGraphBase; |
| 175 | 175 |
|
| 176 | 176 |
protected: |
| 177 | 177 |
int _id; |
| 178 | 178 |
Node(int id) : _id(id) {}
|
| 179 | 179 |
public: |
| 180 | 180 |
Node() {}
|
| 181 | 181 |
Node (Invalid) : _id(-1) {}
|
| 182 | 182 |
bool operator==(const Node node) const {return _id == node._id;}
|
| 183 | 183 |
bool operator!=(const Node node) const {return _id != node._id;}
|
| 184 | 184 |
bool operator<(const Node node) const {return _id < node._id;}
|
| 185 | 185 |
}; |
| 186 | 186 |
|
| 187 | 187 |
class Edge {
|
| 188 | 188 |
friend class GridGraphBase; |
| 189 | 189 |
friend class Arc; |
| 190 | 190 |
|
| 191 | 191 |
protected: |
| 192 | 192 |
int _id; |
| 193 | 193 |
|
| 194 | 194 |
Edge(int id) : _id(id) {}
|
| 195 | 195 |
|
| 196 | 196 |
public: |
| 197 | 197 |
Edge() {}
|
| 198 | 198 |
Edge (Invalid) : _id(-1) {}
|
| 199 | 199 |
bool operator==(const Edge edge) const {return _id == edge._id;}
|
| 200 | 200 |
bool operator!=(const Edge edge) const {return _id != edge._id;}
|
| 201 | 201 |
bool operator<(const Edge edge) const {return _id < edge._id;}
|
| 202 | 202 |
}; |
| 203 | 203 |
|
| 204 | 204 |
class Arc {
|
| 205 | 205 |
friend class GridGraphBase; |
| 206 | 206 |
|
| 207 | 207 |
protected: |
| 208 | 208 |
int _id; |
| 209 | 209 |
|
| 210 | 210 |
Arc(int id) : _id(id) {}
|
| 211 | 211 |
|
| 212 | 212 |
public: |
| 213 | 213 |
Arc() {}
|
| 214 | 214 |
Arc (Invalid) : _id(-1) {}
|
| 215 | 215 |
operator Edge() const { return _id != -1 ? Edge(_id >> 1) : INVALID; }
|
| 216 | 216 |
bool operator==(const Arc arc) const {return _id == arc._id;}
|
| 217 | 217 |
bool operator!=(const Arc arc) const {return _id != arc._id;}
|
| 218 | 218 |
bool operator<(const Arc arc) const {return _id < arc._id;}
|
| 219 | 219 |
}; |
| 220 | 220 |
|
| 221 | 221 |
static bool direction(Arc arc) {
|
| 222 | 222 |
return (arc._id & 1) == 1; |
| 223 | 223 |
} |
| 224 | 224 |
|
| 225 | 225 |
static Arc direct(Edge edge, bool dir) {
|
| 226 | 226 |
return Arc((edge._id << 1) | (dir ? 1 : 0)); |
| 227 | 227 |
} |
| 228 | 228 |
|
| 229 | 229 |
void first(Node& node) const {
|
| 230 | 230 |
node._id = _node_num - 1; |
| 231 | 231 |
} |
| 232 | 232 |
|
| 233 | 233 |
static void next(Node& node) {
|
| 234 | 234 |
--node._id; |
| 235 | 235 |
} |
| 236 | 236 |
|
| 237 | 237 |
void first(Edge& edge) const {
|
| 238 | 238 |
edge._id = _edge_num - 1; |
| 239 | 239 |
} |
| 240 | 240 |
|
| 241 | 241 |
static void next(Edge& edge) {
|
| 242 | 242 |
--edge._id; |
| 243 | 243 |
} |
| 244 | 244 |
|
| 245 | 245 |
void first(Arc& arc) const {
|
| 246 | 246 |
arc._id = 2 * _edge_num - 1; |
| 247 | 247 |
} |
| 248 | 248 |
|
| 249 | 249 |
static void next(Arc& arc) {
|
| 250 | 250 |
--arc._id; |
| 251 | 251 |
} |
| 252 | 252 |
|
| 253 | 253 |
void firstOut(Arc& arc, const Node& node) const {
|
| 254 | 254 |
if (node._id % _width < _width - 1) {
|
| 255 | 255 |
arc._id = (_edge_limit + node._id % _width + |
| 256 | 256 |
(node._id / _width) * (_width - 1)) << 1 | 1; |
| 257 | 257 |
return; |
| 258 | 258 |
} |
| 259 | 259 |
if (node._id < _node_num - _width) {
|
| 260 | 260 |
arc._id = node._id << 1 | 1; |
| 261 | 261 |
return; |
| 262 | 262 |
} |
| 263 | 263 |
if (node._id % _width > 0) {
|
| 264 | 264 |
arc._id = (_edge_limit + node._id % _width + |
| 265 | 265 |
(node._id / _width) * (_width - 1) - 1) << 1; |
| 266 | 266 |
return; |
| 267 | 267 |
} |
| 268 | 268 |
if (node._id >= _width) {
|
| 269 | 269 |
arc._id = (node._id - _width) << 1; |
| 270 | 270 |
return; |
| 271 | 271 |
} |
| 272 | 272 |
arc._id = -1; |
| 273 | 273 |
} |
| 274 | 274 |
|
| 275 | 275 |
void nextOut(Arc& arc) const {
|
| 276 | 276 |
int nid = arc._id >> 1; |
| 277 | 277 |
if ((arc._id & 1) == 1) {
|
| 278 | 278 |
if (nid >= _edge_limit) {
|
| 279 | 279 |
nid = (nid - _edge_limit) % (_width - 1) + |
| 280 | 280 |
(nid - _edge_limit) / (_width - 1) * _width; |
| 281 | 281 |
if (nid < _node_num - _width) {
|
| 282 | 282 |
arc._id = nid << 1 | 1; |
| 283 | 283 |
return; |
| 284 | 284 |
} |
| 285 | 285 |
} |
| 286 | 286 |
if (nid % _width > 0) {
|
| 287 | 287 |
arc._id = (_edge_limit + nid % _width + |
| 288 | 288 |
(nid / _width) * (_width - 1) - 1) << 1; |
| 289 | 289 |
return; |
| 290 | 290 |
} |
| 291 | 291 |
if (nid >= _width) {
|
| 292 | 292 |
arc._id = (nid - _width) << 1; |
| 293 | 293 |
return; |
| 294 | 294 |
} |
| 295 | 295 |
} else {
|
| 296 | 296 |
if (nid >= _edge_limit) {
|
| 297 | 297 |
nid = (nid - _edge_limit) % (_width - 1) + |
| 298 | 298 |
(nid - _edge_limit) / (_width - 1) * _width + 1; |
| 299 | 299 |
if (nid >= _width) {
|
| 300 | 300 |
arc._id = (nid - _width) << 1; |
| 301 | 301 |
return; |
| 302 | 302 |
} |
| 303 | 303 |
} |
| 304 | 304 |
} |
| 305 | 305 |
arc._id = -1; |
| 306 | 306 |
} |
| 307 | 307 |
|
| 308 | 308 |
void firstIn(Arc& arc, const Node& node) const {
|
| 309 | 309 |
if (node._id % _width < _width - 1) {
|
| 310 | 310 |
arc._id = (_edge_limit + node._id % _width + |
| 311 | 311 |
(node._id / _width) * (_width - 1)) << 1; |
| 312 | 312 |
return; |
| 313 | 313 |
} |
| 314 | 314 |
if (node._id < _node_num - _width) {
|
| 315 | 315 |
arc._id = node._id << 1; |
| 316 | 316 |
return; |
| 317 | 317 |
} |
| 318 | 318 |
if (node._id % _width > 0) {
|
| 319 | 319 |
arc._id = (_edge_limit + node._id % _width + |
| 320 | 320 |
(node._id / _width) * (_width - 1) - 1) << 1 | 1; |
| 321 | 321 |
return; |
| 322 | 322 |
} |
| 323 | 323 |
if (node._id >= _width) {
|
| 324 | 324 |
arc._id = (node._id - _width) << 1 | 1; |
| 325 | 325 |
return; |
| 326 | 326 |
} |
| 327 | 327 |
arc._id = -1; |
| 328 | 328 |
} |
| 329 | 329 |
|
| 330 | 330 |
void nextIn(Arc& arc) const {
|
| 331 | 331 |
int nid = arc._id >> 1; |
| 332 | 332 |
if ((arc._id & 1) == 0) {
|
| 333 | 333 |
if (nid >= _edge_limit) {
|
| 334 | 334 |
nid = (nid - _edge_limit) % (_width - 1) + |
| 335 | 335 |
(nid - _edge_limit) / (_width - 1) * _width; |
| 336 | 336 |
if (nid < _node_num - _width) {
|
| 337 | 337 |
arc._id = nid << 1; |
| 338 | 338 |
return; |
| 339 | 339 |
} |
| 340 | 340 |
} |
| 341 | 341 |
if (nid % _width > 0) {
|
| 342 | 342 |
arc._id = (_edge_limit + nid % _width + |
| 343 | 343 |
(nid / _width) * (_width - 1) - 1) << 1 | 1; |
| 344 | 344 |
return; |
| 345 | 345 |
} |
| 346 | 346 |
if (nid >= _width) {
|
| 347 | 347 |
arc._id = (nid - _width) << 1 | 1; |
| 348 | 348 |
return; |
| 349 | 349 |
} |
| 350 | 350 |
} else {
|
| 351 | 351 |
if (nid >= _edge_limit) {
|
| 352 | 352 |
nid = (nid - _edge_limit) % (_width - 1) + |
| 353 | 353 |
(nid - _edge_limit) / (_width - 1) * _width + 1; |
| 354 | 354 |
if (nid >= _width) {
|
| 355 | 355 |
arc._id = (nid - _width) << 1 | 1; |
| 356 | 356 |
return; |
| 357 | 357 |
} |
| 358 | 358 |
} |
| 359 | 359 |
} |
| 360 | 360 |
arc._id = -1; |
| 361 | 361 |
} |
| 362 | 362 |
|
| 363 | 363 |
void firstInc(Edge& edge, bool& dir, const Node& node) const {
|
| 364 | 364 |
if (node._id % _width < _width - 1) {
|
| 365 | 365 |
edge._id = _edge_limit + node._id % _width + |
| 366 | 366 |
(node._id / _width) * (_width - 1); |
| 367 | 367 |
dir = true; |
| 368 | 368 |
return; |
| 369 | 369 |
} |
| 370 | 370 |
if (node._id < _node_num - _width) {
|
| 371 | 371 |
edge._id = node._id; |
| 372 | 372 |
dir = true; |
| 373 | 373 |
return; |
| 374 | 374 |
} |
| 375 | 375 |
if (node._id % _width > 0) {
|
| 376 | 376 |
edge._id = _edge_limit + node._id % _width + |
| 377 | 377 |
(node._id / _width) * (_width - 1) - 1; |
| 378 | 378 |
dir = false; |
| 379 | 379 |
return; |
| 380 | 380 |
} |
| 381 | 381 |
if (node._id >= _width) {
|
| 382 | 382 |
edge._id = node._id - _width; |
| 383 | 383 |
dir = false; |
| 384 | 384 |
return; |
| 385 | 385 |
} |
| 386 | 386 |
edge._id = -1; |
| 387 | 387 |
dir = true; |
| 388 | 388 |
} |
| 389 | 389 |
|
| 390 | 390 |
void nextInc(Edge& edge, bool& dir) const {
|
| 391 | 391 |
int nid = edge._id; |
| 392 | 392 |
if (dir) {
|
| 393 | 393 |
if (nid >= _edge_limit) {
|
| 394 | 394 |
nid = (nid - _edge_limit) % (_width - 1) + |
| 395 | 395 |
(nid - _edge_limit) / (_width - 1) * _width; |
| 396 | 396 |
if (nid < _node_num - _width) {
|
| 397 | 397 |
edge._id = nid; |
| 398 | 398 |
return; |
| 399 | 399 |
} |
| 400 | 400 |
} |
| 401 | 401 |
if (nid % _width > 0) {
|
| 402 | 402 |
edge._id = _edge_limit + nid % _width + |
| 403 | 403 |
(nid / _width) * (_width - 1) - 1; |
| 404 | 404 |
dir = false; |
| 405 | 405 |
return; |
| 406 | 406 |
} |
| 407 | 407 |
if (nid >= _width) {
|
| 408 | 408 |
edge._id = nid - _width; |
| 409 | 409 |
dir = false; |
| 410 | 410 |
return; |
| 411 | 411 |
} |
| 412 | 412 |
} else {
|
| 413 | 413 |
if (nid >= _edge_limit) {
|
| 414 | 414 |
nid = (nid - _edge_limit) % (_width - 1) + |
| 415 | 415 |
(nid - _edge_limit) / (_width - 1) * _width + 1; |
| 416 | 416 |
if (nid >= _width) {
|
| 417 | 417 |
edge._id = nid - _width; |
| 418 | 418 |
return; |
| 419 | 419 |
} |
| 420 | 420 |
} |
| 421 | 421 |
} |
| 422 | 422 |
edge._id = -1; |
| 423 | 423 |
dir = true; |
| 424 | 424 |
} |
| 425 | 425 |
|
| 426 | 426 |
Arc right(Node n) const {
|
| 427 | 427 |
if (n._id % _width < _width - 1) {
|
| 428 | 428 |
return Arc(((_edge_limit + n._id % _width + |
| 429 | 429 |
(n._id / _width) * (_width - 1)) << 1) | 1); |
| 430 | 430 |
} else {
|
| 431 | 431 |
return INVALID; |
| 432 | 432 |
} |
| 433 | 433 |
} |
| 434 | 434 |
|
| 435 | 435 |
Arc left(Node n) const {
|
| 436 | 436 |
if (n._id % _width > 0) {
|
| 437 | 437 |
return Arc((_edge_limit + n._id % _width + |
| 438 | 438 |
(n._id / _width) * (_width - 1) - 1) << 1); |
| 439 | 439 |
} else {
|
| 440 | 440 |
return INVALID; |
| 441 | 441 |
} |
| 442 | 442 |
} |
| 443 | 443 |
|
| 444 | 444 |
Arc up(Node n) const {
|
| 445 | 445 |
if (n._id < _edge_limit) {
|
| 446 | 446 |
return Arc((n._id << 1) | 1); |
| 447 | 447 |
} else {
|
| 448 | 448 |
return INVALID; |
| 449 | 449 |
} |
| 450 | 450 |
} |
| 451 | 451 |
|
| 452 | 452 |
Arc down(Node n) const {
|
| 453 | 453 |
if (n._id >= _width) {
|
| 454 | 454 |
return Arc((n._id - _width) << 1); |
| 455 | 455 |
} else {
|
| 456 | 456 |
return INVALID; |
| 457 | 457 |
} |
| 458 | 458 |
} |
| 459 | 459 |
|
| 460 | 460 |
private: |
| 461 | 461 |
int _width, _height; |
| 462 | 462 |
int _node_num, _edge_num; |
| 463 | 463 |
int _edge_limit; |
| 464 | 464 |
}; |
| 465 | 465 |
|
| 466 | 466 |
|
| 467 | 467 |
typedef GraphExtender<GridGraphBase> ExtendedGridGraphBase; |
| 468 | 468 |
|
| 469 | 469 |
/// \ingroup graphs |
| 470 | 470 |
/// |
| 471 | 471 |
/// \brief Grid graph class |
| 472 | 472 |
/// |
| 473 |
/// This class implements a special graph type. The nodes of the |
|
| 474 |
/// graph can be indexed by two integer \c (i,j) value where \c i is |
|
| 475 |
/// in the \c [0..width()-1] range and j is in the \c |
|
| 476 |
/// [0..height()-1] range. Two nodes are connected in the graph if |
|
| 477 |
/// the indexes differ exactly on one position and exactly one is |
|
| 478 |
/// the difference. The nodes of the graph can be indexed by position |
|
| 479 |
/// with the \c operator()() function. The positions of the nodes can be |
|
| 480 |
/// get with \c pos(), \c col() and \c row() members. The outgoing |
|
| 473 |
/// GridGraph implements a special graph type. The nodes of the |
|
| 474 |
/// graph can be indexed by two integer values \c (i,j) where \c i is |
|
| 475 |
/// in the range <tt>[0..width()-1]</tt> and j is in the range |
|
| 476 |
/// <tt>[0..height()-1]</tt>. Two nodes are connected in the graph if |
|
| 477 |
/// the indices differ exactly on one position and the difference is |
|
| 478 |
/// also exactly one. The nodes of the graph can be obtained by position |
|
| 479 |
/// using the \c operator()() function and the indices of the nodes can |
|
| 480 |
/// be obtained using \c pos(), \c col() and \c row() members. The outgoing |
|
| 481 | 481 |
/// arcs can be retrieved with the \c right(), \c up(), \c left() |
| 482 | 482 |
/// and \c down() functions, where the bottom-left corner is the |
| 483 | 483 |
/// origin. |
| 484 | 484 |
/// |
| 485 |
/// This class is completely static and it needs constant memory space. |
|
| 486 |
/// Thus you can neither add nor delete nodes or edges, however |
|
| 487 |
/// the structure can be resized using resize(). |
|
| 488 |
/// |
|
| 485 | 489 |
/// \image html grid_graph.png |
| 486 | 490 |
/// \image latex grid_graph.eps "Grid graph" width=\textwidth |
| 487 | 491 |
/// |
| 488 | 492 |
/// A short example about the basic usage: |
| 489 | 493 |
///\code |
| 490 | 494 |
/// GridGraph graph(rows, cols); |
| 491 | 495 |
/// GridGraph::NodeMap<int> val(graph); |
| 492 | 496 |
/// for (int i = 0; i < graph.width(); ++i) {
|
| 493 | 497 |
/// for (int j = 0; j < graph.height(); ++j) {
|
| 494 | 498 |
/// val[graph(i, j)] = i + j; |
| 495 | 499 |
/// } |
| 496 | 500 |
/// } |
| 497 | 501 |
///\endcode |
| 498 | 502 |
/// |
| 499 |
/// This graph type is fully conform to the \ref concepts::Graph |
|
| 500 |
/// "Graph" concept, and it also has an important extra feature |
|
| 501 |
/// that its maps are real \ref concepts::ReferenceMap |
|
| 502 |
/// "reference map"s. |
|
| 503 |
/// This type fully conforms to the \ref concepts::Graph "Graph concept". |
|
| 504 |
/// Most of its member functions and nested classes are documented |
|
| 505 |
/// only in the concept class. |
|
| 503 | 506 |
class GridGraph : public ExtendedGridGraphBase {
|
| 507 |
typedef ExtendedGridGraphBase Parent; |
|
| 508 |
|
|
| 504 | 509 |
public: |
| 505 | 510 |
|
| 506 |
typedef ExtendedGridGraphBase Parent; |
|
| 507 |
|
|
| 508 |
/// \brief Map to get the indices of the nodes as dim2::Point |
|
| 511 |
/// \brief Map to get the indices of the nodes as \ref dim2::Point |
|
| 512 |
/// "dim2::Point<int>". |
|
| 509 | 513 |
/// |
| 510 |
/// Map to get the indices of the nodes as dim2::Point |
|
| 514 |
/// Map to get the indices of the nodes as \ref dim2::Point |
|
| 515 |
/// "dim2::Point<int>". |
|
| 511 | 516 |
class IndexMap {
|
| 512 | 517 |
public: |
| 513 | 518 |
/// \brief The key type of the map |
| 514 | 519 |
typedef GridGraph::Node Key; |
| 515 | 520 |
/// \brief The value type of the map |
| 516 | 521 |
typedef dim2::Point<int> Value; |
| 517 | 522 |
|
| 518 | 523 |
/// \brief Constructor |
| 519 |
/// |
|
| 520 |
/// Constructor |
|
| 521 | 524 |
IndexMap(const GridGraph& graph) : _graph(graph) {}
|
| 522 | 525 |
|
| 523 | 526 |
/// \brief The subscript operator |
| 524 |
/// |
|
| 525 |
/// The subscript operator. |
|
| 526 | 527 |
Value operator[](Key key) const {
|
| 527 | 528 |
return _graph.pos(key); |
| 528 | 529 |
} |
| 529 | 530 |
|
| 530 | 531 |
private: |
| 531 | 532 |
const GridGraph& _graph; |
| 532 | 533 |
}; |
| 533 | 534 |
|
| 534 | 535 |
/// \brief Map to get the column of the nodes. |
| 535 | 536 |
/// |
| 536 | 537 |
/// Map to get the column of the nodes. |
| 537 | 538 |
class ColMap {
|
| 538 | 539 |
public: |
| 539 | 540 |
/// \brief The key type of the map |
| 540 | 541 |
typedef GridGraph::Node Key; |
| 541 | 542 |
/// \brief The value type of the map |
| 542 | 543 |
typedef int Value; |
| 543 | 544 |
|
| 544 | 545 |
/// \brief Constructor |
| 545 |
/// |
|
| 546 |
/// Constructor |
|
| 547 | 546 |
ColMap(const GridGraph& graph) : _graph(graph) {}
|
| 548 | 547 |
|
| 549 | 548 |
/// \brief The subscript operator |
| 550 |
/// |
|
| 551 |
/// The subscript operator. |
|
| 552 | 549 |
Value operator[](Key key) const {
|
| 553 | 550 |
return _graph.col(key); |
| 554 | 551 |
} |
| 555 | 552 |
|
| 556 | 553 |
private: |
| 557 | 554 |
const GridGraph& _graph; |
| 558 | 555 |
}; |
| 559 | 556 |
|
| 560 | 557 |
/// \brief Map to get the row of the nodes. |
| 561 | 558 |
/// |
| 562 | 559 |
/// Map to get the row of the nodes. |
| 563 | 560 |
class RowMap {
|
| 564 | 561 |
public: |
| 565 | 562 |
/// \brief The key type of the map |
| 566 | 563 |
typedef GridGraph::Node Key; |
| 567 | 564 |
/// \brief The value type of the map |
| 568 | 565 |
typedef int Value; |
| 569 | 566 |
|
| 570 | 567 |
/// \brief Constructor |
| 571 |
/// |
|
| 572 |
/// Constructor |
|
| 573 | 568 |
RowMap(const GridGraph& graph) : _graph(graph) {}
|
| 574 | 569 |
|
| 575 | 570 |
/// \brief The subscript operator |
| 576 |
/// |
|
| 577 |
/// The subscript operator. |
|
| 578 | 571 |
Value operator[](Key key) const {
|
| 579 | 572 |
return _graph.row(key); |
| 580 | 573 |
} |
| 581 | 574 |
|
| 582 | 575 |
private: |
| 583 | 576 |
const GridGraph& _graph; |
| 584 | 577 |
}; |
| 585 | 578 |
|
| 586 | 579 |
/// \brief Constructor |
| 587 | 580 |
/// |
| 588 |
/// Construct a grid graph with given size. |
|
| 581 |
/// Construct a grid graph with the given size. |
|
| 589 | 582 |
GridGraph(int width, int height) { construct(width, height); }
|
| 590 | 583 |
|
| 591 |
/// \brief |
|
| 584 |
/// \brief Resizes the graph |
|
| 592 | 585 |
/// |
| 593 |
/// Resize the graph. The function will fully destroy and rebuild |
|
| 594 |
/// the graph. This cause that the maps of the graph will |
|
| 595 |
/// reallocated automatically and the previous values will be |
|
| 596 |
/// lost. |
|
| 586 |
/// This function resizes the graph. It fully destroys and |
|
| 587 |
/// rebuilds the structure, therefore the maps of the graph will be |
|
| 588 |
/// reallocated automatically and the previous values will be lost. |
|
| 597 | 589 |
void resize(int width, int height) {
|
| 598 | 590 |
Parent::notifier(Arc()).clear(); |
| 599 | 591 |
Parent::notifier(Edge()).clear(); |
| 600 | 592 |
Parent::notifier(Node()).clear(); |
| 601 | 593 |
construct(width, height); |
| 602 | 594 |
Parent::notifier(Node()).build(); |
| 603 | 595 |
Parent::notifier(Edge()).build(); |
| 604 | 596 |
Parent::notifier(Arc()).build(); |
| 605 | 597 |
} |
| 606 | 598 |
|
| 607 | 599 |
/// \brief The node on the given position. |
| 608 | 600 |
/// |
| 609 | 601 |
/// Gives back the node on the given position. |
| 610 | 602 |
Node operator()(int i, int j) const {
|
| 611 | 603 |
return Parent::operator()(i, j); |
| 612 | 604 |
} |
| 613 | 605 |
|
| 614 |
/// \brief |
|
| 606 |
/// \brief The column index of the node. |
|
| 615 | 607 |
/// |
| 616 | 608 |
/// Gives back the column index of the node. |
| 617 | 609 |
int col(Node n) const {
|
| 618 | 610 |
return Parent::col(n); |
| 619 | 611 |
} |
| 620 | 612 |
|
| 621 |
/// \brief |
|
| 613 |
/// \brief The row index of the node. |
|
| 622 | 614 |
/// |
| 623 | 615 |
/// Gives back the row index of the node. |
| 624 | 616 |
int row(Node n) const {
|
| 625 | 617 |
return Parent::row(n); |
| 626 | 618 |
} |
| 627 | 619 |
|
| 628 |
/// \brief |
|
| 620 |
/// \brief The position of the node. |
|
| 629 | 621 |
/// |
| 630 | 622 |
/// Gives back the position of the node, ie. the <tt>(col,row)</tt> pair. |
| 631 | 623 |
dim2::Point<int> pos(Node n) const {
|
| 632 | 624 |
return Parent::pos(n); |
| 633 | 625 |
} |
| 634 | 626 |
|
| 635 |
/// \brief |
|
| 627 |
/// \brief The number of the columns. |
|
| 636 | 628 |
/// |
| 637 | 629 |
/// Gives back the number of the columns. |
| 638 | 630 |
int width() const {
|
| 639 | 631 |
return Parent::width(); |
| 640 | 632 |
} |
| 641 | 633 |
|
| 642 |
/// \brief |
|
| 634 |
/// \brief The number of the rows. |
|
| 643 | 635 |
/// |
| 644 | 636 |
/// Gives back the number of the rows. |
| 645 | 637 |
int height() const {
|
| 646 | 638 |
return Parent::height(); |
| 647 | 639 |
} |
| 648 | 640 |
|
| 649 |
/// \brief |
|
| 641 |
/// \brief The arc goes right from the node. |
|
| 650 | 642 |
/// |
| 651 | 643 |
/// Gives back the arc goes right from the node. If there is not |
| 652 | 644 |
/// outgoing arc then it gives back INVALID. |
| 653 | 645 |
Arc right(Node n) const {
|
| 654 | 646 |
return Parent::right(n); |
| 655 | 647 |
} |
| 656 | 648 |
|
| 657 |
/// \brief |
|
| 649 |
/// \brief The arc goes left from the node. |
|
| 658 | 650 |
/// |
| 659 | 651 |
/// Gives back the arc goes left from the node. If there is not |
| 660 | 652 |
/// outgoing arc then it gives back INVALID. |
| 661 | 653 |
Arc left(Node n) const {
|
| 662 | 654 |
return Parent::left(n); |
| 663 | 655 |
} |
| 664 | 656 |
|
| 665 |
/// \brief |
|
| 657 |
/// \brief The arc goes up from the node. |
|
| 666 | 658 |
/// |
| 667 | 659 |
/// Gives back the arc goes up from the node. If there is not |
| 668 | 660 |
/// outgoing arc then it gives back INVALID. |
| 669 | 661 |
Arc up(Node n) const {
|
| 670 | 662 |
return Parent::up(n); |
| 671 | 663 |
} |
| 672 | 664 |
|
| 673 |
/// \brief |
|
| 665 |
/// \brief The arc goes down from the node. |
|
| 674 | 666 |
/// |
| 675 | 667 |
/// Gives back the arc goes down from the node. If there is not |
| 676 | 668 |
/// outgoing arc then it gives back INVALID. |
| 677 | 669 |
Arc down(Node n) const {
|
| 678 | 670 |
return Parent::down(n); |
| 679 | 671 |
} |
| 680 | 672 |
|
| 681 | 673 |
/// \brief Index map of the grid graph |
| 682 | 674 |
/// |
| 683 | 675 |
/// Just returns an IndexMap for the grid graph. |
| 684 | 676 |
IndexMap indexMap() const {
|
| 685 | 677 |
return IndexMap(*this); |
| 686 | 678 |
} |
| 687 | 679 |
|
| 688 | 680 |
/// \brief Row map of the grid graph |
| 689 | 681 |
/// |
| 690 | 682 |
/// Just returns a RowMap for the grid graph. |
| 691 | 683 |
RowMap rowMap() const {
|
| 692 | 684 |
return RowMap(*this); |
| 693 | 685 |
} |
| 694 | 686 |
|
| 695 | 687 |
/// \brief Column map of the grid graph |
| 696 | 688 |
/// |
| 697 | 689 |
/// Just returns a ColMap for the grid graph. |
| 698 | 690 |
ColMap colMap() const {
|
| 699 | 691 |
return ColMap(*this); |
| 700 | 692 |
} |
| 701 | 693 |
|
| 702 | 694 |
}; |
| 703 | 695 |
|
| 704 | 696 |
} |
| 705 | 697 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_HAO_ORLIN_H |
| 20 | 20 |
#define LEMON_HAO_ORLIN_H |
| 21 | 21 |
|
| 22 | 22 |
#include <vector> |
| 23 | 23 |
#include <list> |
| 24 | 24 |
#include <limits> |
| 25 | 25 |
|
| 26 | 26 |
#include <lemon/maps.h> |
| 27 | 27 |
#include <lemon/core.h> |
| 28 | 28 |
#include <lemon/tolerance.h> |
| 29 | 29 |
|
| 30 | 30 |
/// \file |
| 31 | 31 |
/// \ingroup min_cut |
| 32 | 32 |
/// \brief Implementation of the Hao-Orlin algorithm. |
| 33 | 33 |
/// |
| 34 |
/// Implementation of the Hao-Orlin algorithm class for testing network |
|
| 35 |
/// reliability. |
|
| 34 |
/// Implementation of the Hao-Orlin algorithm for finding a minimum cut |
|
| 35 |
/// in a digraph. |
|
| 36 | 36 |
|
| 37 | 37 |
namespace lemon {
|
| 38 | 38 |
|
| 39 | 39 |
/// \ingroup min_cut |
| 40 | 40 |
/// |
| 41 |
/// \brief |
|
| 41 |
/// \brief Hao-Orlin algorithm for finding a minimum cut in a digraph. |
|
| 42 | 42 |
/// |
| 43 |
/// Hao-Orlin calculates a minimum cut in a directed graph |
|
| 44 |
/// \f$D=(V,A)\f$. It takes a fixed node \f$ source \in V \f$ and |
|
| 43 |
/// This class implements the Hao-Orlin algorithm for finding a minimum |
|
| 44 |
/// value cut in a directed graph \f$D=(V,A)\f$. |
|
| 45 |
/// It takes a fixed node \f$ source \in V \f$ and |
|
| 45 | 46 |
/// consists of two phases: in the first phase it determines a |
| 46 | 47 |
/// minimum cut with \f$ source \f$ on the source-side (i.e. a set |
| 47 |
/// \f$ X\subsetneq V \f$ with \f$ source \in X \f$ and minimal |
|
| 48 |
/// out-degree) and in the second phase it determines a minimum cut |
|
| 48 |
/// \f$ X\subsetneq V \f$ with \f$ source \in X \f$ and minimal outgoing |
|
| 49 |
/// capacity) and in the second phase it determines a minimum cut |
|
| 49 | 50 |
/// with \f$ source \f$ on the sink-side (i.e. a set |
| 50 |
/// \f$ X\subsetneq V \f$ with \f$ source \notin X \f$ and minimal |
|
| 51 |
/// out-degree). Obviously, the smaller of these two cuts will be a |
|
| 51 |
/// \f$ X\subsetneq V \f$ with \f$ source \notin X \f$ and minimal outgoing |
|
| 52 |
/// capacity). Obviously, the smaller of these two cuts will be a |
|
| 52 | 53 |
/// minimum cut of \f$ D \f$. The algorithm is a modified |
| 53 |
/// push-relabel |
|
| 54 |
/// preflow push-relabel algorithm. Our implementation calculates |
|
| 54 | 55 |
/// the minimum cut in \f$ O(n^2\sqrt{m}) \f$ time (we use the
|
| 55 | 56 |
/// highest-label rule), or in \f$O(nm)\f$ for unit capacities. The |
| 56 |
/// purpose of such algorithm is testing network reliability. For an |
|
| 57 |
/// undirected graph you can run just the first phase of the |
|
| 58 |
/// algorithm or you can use the algorithm of Nagamochi and Ibaraki |
|
| 59 |
/// which solves the undirected problem in |
|
| 60 |
/// \f$ O(nm + n^2 \log(n)) \f$ time: it is implemented in the |
|
| 61 |
/// NagamochiIbaraki algorithm class. |
|
| 57 |
/// purpose of such algorithm is e.g. testing network reliability. |
|
| 62 | 58 |
/// |
| 63 |
/// \param _Digraph is the graph type of the algorithm. |
|
| 64 |
/// \param _CapacityMap is an edge map of capacities which should |
|
| 65 |
/// be any numreric type. The default type is _Digraph::ArcMap<int>. |
|
| 66 |
/// \param _Tolerance is the handler of the inexact computation. The |
|
| 67 |
/// |
|
| 59 |
/// For an undirected graph you can run just the first phase of the |
|
| 60 |
/// algorithm or you can use the algorithm of Nagamochi and Ibaraki, |
|
| 61 |
/// which solves the undirected problem in \f$ O(nm + n^2 \log n) \f$ |
|
| 62 |
/// time. It is implemented in the NagamochiIbaraki algorithm class. |
|
| 63 |
/// |
|
| 64 |
/// \tparam GR The type of the digraph the algorithm runs on. |
|
| 65 |
/// \tparam CAP The type of the arc map containing the capacities, |
|
| 66 |
/// which can be any numreric type. The default map type is |
|
| 67 |
/// \ref concepts::Digraph::ArcMap "GR::ArcMap<int>". |
|
| 68 |
/// \tparam TOL Tolerance class for handling inexact computations. The |
|
| 69 |
/// default tolerance type is \ref Tolerance "Tolerance<CAP::Value>". |
|
| 68 | 70 |
#ifdef DOXYGEN |
| 69 |
template <typename |
|
| 71 |
template <typename GR, typename CAP, typename TOL> |
|
| 70 | 72 |
#else |
| 71 |
template <typename _Digraph, |
|
| 72 |
typename _CapacityMap = typename _Digraph::template ArcMap<int>, |
|
| 73 |
|
|
| 73 |
template <typename GR, |
|
| 74 |
typename CAP = typename GR::template ArcMap<int>, |
|
| 75 |
typename TOL = Tolerance<typename CAP::Value> > |
|
| 74 | 76 |
#endif |
| 75 | 77 |
class HaoOrlin {
|
| 78 |
public: |
|
| 79 |
|
|
| 80 |
/// The digraph type of the algorithm |
|
| 81 |
typedef GR Digraph; |
|
| 82 |
/// The capacity map type of the algorithm |
|
| 83 |
typedef CAP CapacityMap; |
|
| 84 |
/// The tolerance type of the algorithm |
|
| 85 |
typedef TOL Tolerance; |
|
| 86 |
|
|
| 76 | 87 |
private: |
| 77 | 88 |
|
| 78 |
typedef _Digraph Digraph; |
|
| 79 |
typedef _CapacityMap CapacityMap; |
|
| 80 |
typedef _Tolerance Tolerance; |
|
| 81 |
|
|
| 82 | 89 |
typedef typename CapacityMap::Value Value; |
| 83 | 90 |
|
| 84 |
|
|
| 91 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
|
| 85 | 92 |
|
| 86 | 93 |
const Digraph& _graph; |
| 87 | 94 |
const CapacityMap* _capacity; |
| 88 | 95 |
|
| 89 | 96 |
typedef typename Digraph::template ArcMap<Value> FlowMap; |
| 90 | 97 |
FlowMap* _flow; |
| 91 | 98 |
|
| 92 | 99 |
Node _source; |
| 93 | 100 |
|
| 94 | 101 |
int _node_num; |
| 95 | 102 |
|
| 96 | 103 |
// Bucketing structure |
| 97 | 104 |
std::vector<Node> _first, _last; |
| 98 | 105 |
typename Digraph::template NodeMap<Node>* _next; |
| 99 | 106 |
typename Digraph::template NodeMap<Node>* _prev; |
| 100 | 107 |
typename Digraph::template NodeMap<bool>* _active; |
| 101 | 108 |
typename Digraph::template NodeMap<int>* _bucket; |
| 102 | 109 |
|
| 103 | 110 |
std::vector<bool> _dormant; |
| 104 | 111 |
|
| 105 | 112 |
std::list<std::list<int> > _sets; |
| 106 | 113 |
std::list<int>::iterator _highest; |
| 107 | 114 |
|
| 108 | 115 |
typedef typename Digraph::template NodeMap<Value> ExcessMap; |
| 109 | 116 |
ExcessMap* _excess; |
| 110 | 117 |
|
| 111 | 118 |
typedef typename Digraph::template NodeMap<bool> SourceSetMap; |
| 112 | 119 |
SourceSetMap* _source_set; |
| 113 | 120 |
|
| 114 | 121 |
Value _min_cut; |
| 115 | 122 |
|
| 116 | 123 |
typedef typename Digraph::template NodeMap<bool> MinCutMap; |
| 117 | 124 |
MinCutMap* _min_cut_map; |
| 118 | 125 |
|
| 119 | 126 |
Tolerance _tolerance; |
| 120 | 127 |
|
| 121 | 128 |
public: |
| 122 | 129 |
|
| 123 | 130 |
/// \brief Constructor |
| 124 | 131 |
/// |
| 125 | 132 |
/// Constructor of the algorithm class. |
| 126 | 133 |
HaoOrlin(const Digraph& graph, const CapacityMap& capacity, |
| 127 | 134 |
const Tolerance& tolerance = Tolerance()) : |
| 128 | 135 |
_graph(graph), _capacity(&capacity), _flow(0), _source(), |
| 129 | 136 |
_node_num(), _first(), _last(), _next(0), _prev(0), |
| 130 | 137 |
_active(0), _bucket(0), _dormant(), _sets(), _highest(), |
| 131 | 138 |
_excess(0), _source_set(0), _min_cut(), _min_cut_map(0), |
| 132 | 139 |
_tolerance(tolerance) {}
|
| 133 | 140 |
|
| 134 | 141 |
~HaoOrlin() {
|
| 135 | 142 |
if (_min_cut_map) {
|
| 136 | 143 |
delete _min_cut_map; |
| 137 | 144 |
} |
| 138 | 145 |
if (_source_set) {
|
| 139 | 146 |
delete _source_set; |
| 140 | 147 |
} |
| 141 | 148 |
if (_excess) {
|
| 142 | 149 |
delete _excess; |
| 143 | 150 |
} |
| 144 | 151 |
if (_next) {
|
| 145 | 152 |
delete _next; |
| 146 | 153 |
} |
| 147 | 154 |
if (_prev) {
|
| 148 | 155 |
delete _prev; |
| 149 | 156 |
} |
| 150 | 157 |
if (_active) {
|
| 151 | 158 |
delete _active; |
| 152 | 159 |
} |
| 153 | 160 |
if (_bucket) {
|
| 154 | 161 |
delete _bucket; |
| 155 | 162 |
} |
| 156 | 163 |
if (_flow) {
|
| 157 | 164 |
delete _flow; |
| 158 | 165 |
} |
| 159 | 166 |
} |
| 160 | 167 |
|
| 161 | 168 |
private: |
| 162 | 169 |
|
| 163 | 170 |
void activate(const Node& i) {
|
| 164 |
_active |
|
| 171 |
(*_active)[i] = true; |
|
| 165 | 172 |
|
| 166 | 173 |
int bucket = (*_bucket)[i]; |
| 167 | 174 |
|
| 168 | 175 |
if ((*_prev)[i] == INVALID || (*_active)[(*_prev)[i]]) return; |
| 169 | 176 |
//unlace |
| 170 |
_next |
|
| 177 |
(*_next)[(*_prev)[i]] = (*_next)[i]; |
|
| 171 | 178 |
if ((*_next)[i] != INVALID) {
|
| 172 |
_prev |
|
| 179 |
(*_prev)[(*_next)[i]] = (*_prev)[i]; |
|
| 173 | 180 |
} else {
|
| 174 | 181 |
_last[bucket] = (*_prev)[i]; |
| 175 | 182 |
} |
| 176 | 183 |
//lace |
| 177 |
_next->set(i, _first[bucket]); |
|
| 178 |
_prev->set(_first[bucket], i); |
|
| 179 |
|
|
| 184 |
(*_next)[i] = _first[bucket]; |
|
| 185 |
(*_prev)[_first[bucket]] = i; |
|
| 186 |
(*_prev)[i] = INVALID; |
|
| 180 | 187 |
_first[bucket] = i; |
| 181 | 188 |
} |
| 182 | 189 |
|
| 183 | 190 |
void deactivate(const Node& i) {
|
| 184 |
_active |
|
| 191 |
(*_active)[i] = false; |
|
| 185 | 192 |
int bucket = (*_bucket)[i]; |
| 186 | 193 |
|
| 187 | 194 |
if ((*_next)[i] == INVALID || !(*_active)[(*_next)[i]]) return; |
| 188 | 195 |
|
| 189 | 196 |
//unlace |
| 190 |
_prev |
|
| 197 |
(*_prev)[(*_next)[i]] = (*_prev)[i]; |
|
| 191 | 198 |
if ((*_prev)[i] != INVALID) {
|
| 192 |
_next |
|
| 199 |
(*_next)[(*_prev)[i]] = (*_next)[i]; |
|
| 193 | 200 |
} else {
|
| 194 | 201 |
_first[bucket] = (*_next)[i]; |
| 195 | 202 |
} |
| 196 | 203 |
//lace |
| 197 |
_prev->set(i, _last[bucket]); |
|
| 198 |
_next->set(_last[bucket], i); |
|
| 199 |
|
|
| 204 |
(*_prev)[i] = _last[bucket]; |
|
| 205 |
(*_next)[_last[bucket]] = i; |
|
| 206 |
(*_next)[i] = INVALID; |
|
| 200 | 207 |
_last[bucket] = i; |
| 201 | 208 |
} |
| 202 | 209 |
|
| 203 | 210 |
void addItem(const Node& i, int bucket) {
|
| 204 | 211 |
(*_bucket)[i] = bucket; |
| 205 | 212 |
if (_last[bucket] != INVALID) {
|
| 206 |
_prev->set(i, _last[bucket]); |
|
| 207 |
_next->set(_last[bucket], i); |
|
| 208 |
|
|
| 213 |
(*_prev)[i] = _last[bucket]; |
|
| 214 |
(*_next)[_last[bucket]] = i; |
|
| 215 |
(*_next)[i] = INVALID; |
|
| 209 | 216 |
_last[bucket] = i; |
| 210 | 217 |
} else {
|
| 211 |
_prev |
|
| 218 |
(*_prev)[i] = INVALID; |
|
| 212 | 219 |
_first[bucket] = i; |
| 213 |
_next |
|
| 220 |
(*_next)[i] = INVALID; |
|
| 214 | 221 |
_last[bucket] = i; |
| 215 | 222 |
} |
| 216 | 223 |
} |
| 217 | 224 |
|
| 218 | 225 |
void findMinCutOut() {
|
| 219 | 226 |
|
| 220 | 227 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 221 |
_excess |
|
| 228 |
(*_excess)[n] = 0; |
|
| 229 |
(*_source_set)[n] = false; |
|
| 222 | 230 |
} |
| 223 | 231 |
|
| 224 | 232 |
for (ArcIt a(_graph); a != INVALID; ++a) {
|
| 225 |
_flow |
|
| 233 |
(*_flow)[a] = 0; |
|
| 226 | 234 |
} |
| 227 | 235 |
|
| 228 | 236 |
int bucket_num = 0; |
| 229 | 237 |
std::vector<Node> queue(_node_num); |
| 230 | 238 |
int qfirst = 0, qlast = 0, qsep = 0; |
| 231 | 239 |
|
| 232 | 240 |
{
|
| 233 | 241 |
typename Digraph::template NodeMap<bool> reached(_graph, false); |
| 234 | 242 |
|
| 235 |
reached |
|
| 243 |
reached[_source] = true; |
|
| 236 | 244 |
bool first_set = true; |
| 237 | 245 |
|
| 238 | 246 |
for (NodeIt t(_graph); t != INVALID; ++t) {
|
| 239 | 247 |
if (reached[t]) continue; |
| 240 | 248 |
_sets.push_front(std::list<int>()); |
| 241 | 249 |
|
| 242 | 250 |
queue[qlast++] = t; |
| 243 |
reached |
|
| 251 |
reached[t] = true; |
|
| 244 | 252 |
|
| 245 | 253 |
while (qfirst != qlast) {
|
| 246 | 254 |
if (qsep == qfirst) {
|
| 247 | 255 |
++bucket_num; |
| 248 | 256 |
_sets.front().push_front(bucket_num); |
| 249 | 257 |
_dormant[bucket_num] = !first_set; |
| 250 | 258 |
_first[bucket_num] = _last[bucket_num] = INVALID; |
| 251 | 259 |
qsep = qlast; |
| 252 | 260 |
} |
| 253 | 261 |
|
| 254 | 262 |
Node n = queue[qfirst++]; |
| 255 | 263 |
addItem(n, bucket_num); |
| 256 | 264 |
|
| 257 | 265 |
for (InArcIt a(_graph, n); a != INVALID; ++a) {
|
| 258 | 266 |
Node u = _graph.source(a); |
| 259 | 267 |
if (!reached[u] && _tolerance.positive((*_capacity)[a])) {
|
| 260 |
reached |
|
| 268 |
reached[u] = true; |
|
| 261 | 269 |
queue[qlast++] = u; |
| 262 | 270 |
} |
| 263 | 271 |
} |
| 264 | 272 |
} |
| 265 | 273 |
first_set = false; |
| 266 | 274 |
} |
| 267 | 275 |
|
| 268 | 276 |
++bucket_num; |
| 269 |
_bucket |
|
| 277 |
(*_bucket)[_source] = 0; |
|
| 270 | 278 |
_dormant[0] = true; |
| 271 | 279 |
} |
| 272 |
_source_set |
|
| 280 |
(*_source_set)[_source] = true; |
|
| 273 | 281 |
|
| 274 | 282 |
Node target = _last[_sets.back().back()]; |
| 275 | 283 |
{
|
| 276 | 284 |
for (OutArcIt a(_graph, _source); a != INVALID; ++a) {
|
| 277 | 285 |
if (_tolerance.positive((*_capacity)[a])) {
|
| 278 | 286 |
Node u = _graph.target(a); |
| 279 |
_flow->set(a, (*_capacity)[a]); |
|
| 280 |
_excess->set(u, (*_excess)[u] + (*_capacity)[a]); |
|
| 287 |
(*_flow)[a] = (*_capacity)[a]; |
|
| 288 |
(*_excess)[u] += (*_capacity)[a]; |
|
| 281 | 289 |
if (!(*_active)[u] && u != _source) {
|
| 282 | 290 |
activate(u); |
| 283 | 291 |
} |
| 284 | 292 |
} |
| 285 | 293 |
} |
| 286 | 294 |
|
| 287 | 295 |
if ((*_active)[target]) {
|
| 288 | 296 |
deactivate(target); |
| 289 | 297 |
} |
| 290 | 298 |
|
| 291 | 299 |
_highest = _sets.back().begin(); |
| 292 | 300 |
while (_highest != _sets.back().end() && |
| 293 | 301 |
!(*_active)[_first[*_highest]]) {
|
| 294 | 302 |
++_highest; |
| 295 | 303 |
} |
| 296 | 304 |
} |
| 297 | 305 |
|
| 298 | 306 |
while (true) {
|
| 299 | 307 |
while (_highest != _sets.back().end()) {
|
| 300 | 308 |
Node n = _first[*_highest]; |
| 301 | 309 |
Value excess = (*_excess)[n]; |
| 302 | 310 |
int next_bucket = _node_num; |
| 303 | 311 |
|
| 304 | 312 |
int under_bucket; |
| 305 | 313 |
if (++std::list<int>::iterator(_highest) == _sets.back().end()) {
|
| 306 | 314 |
under_bucket = -1; |
| 307 | 315 |
} else {
|
| 308 | 316 |
under_bucket = *(++std::list<int>::iterator(_highest)); |
| 309 | 317 |
} |
| 310 | 318 |
|
| 311 | 319 |
for (OutArcIt a(_graph, n); a != INVALID; ++a) {
|
| 312 | 320 |
Node v = _graph.target(a); |
| 313 | 321 |
if (_dormant[(*_bucket)[v]]) continue; |
| 314 | 322 |
Value rem = (*_capacity)[a] - (*_flow)[a]; |
| 315 | 323 |
if (!_tolerance.positive(rem)) continue; |
| 316 | 324 |
if ((*_bucket)[v] == under_bucket) {
|
| 317 | 325 |
if (!(*_active)[v] && v != target) {
|
| 318 | 326 |
activate(v); |
| 319 | 327 |
} |
| 320 | 328 |
if (!_tolerance.less(rem, excess)) {
|
| 321 |
_flow->set(a, (*_flow)[a] + excess); |
|
| 322 |
_excess->set(v, (*_excess)[v] + excess); |
|
| 329 |
(*_flow)[a] += excess; |
|
| 330 |
(*_excess)[v] += excess; |
|
| 323 | 331 |
excess = 0; |
| 324 | 332 |
goto no_more_push; |
| 325 | 333 |
} else {
|
| 326 | 334 |
excess -= rem; |
| 327 |
_excess->set(v, (*_excess)[v] + rem); |
|
| 328 |
_flow->set(a, (*_capacity)[a]); |
|
| 335 |
(*_excess)[v] += rem; |
|
| 336 |
(*_flow)[a] = (*_capacity)[a]; |
|
| 329 | 337 |
} |
| 330 | 338 |
} else if (next_bucket > (*_bucket)[v]) {
|
| 331 | 339 |
next_bucket = (*_bucket)[v]; |
| 332 | 340 |
} |
| 333 | 341 |
} |
| 334 | 342 |
|
| 335 | 343 |
for (InArcIt a(_graph, n); a != INVALID; ++a) {
|
| 336 | 344 |
Node v = _graph.source(a); |
| 337 | 345 |
if (_dormant[(*_bucket)[v]]) continue; |
| 338 | 346 |
Value rem = (*_flow)[a]; |
| 339 | 347 |
if (!_tolerance.positive(rem)) continue; |
| 340 | 348 |
if ((*_bucket)[v] == under_bucket) {
|
| 341 | 349 |
if (!(*_active)[v] && v != target) {
|
| 342 | 350 |
activate(v); |
| 343 | 351 |
} |
| 344 | 352 |
if (!_tolerance.less(rem, excess)) {
|
| 345 |
_flow->set(a, (*_flow)[a] - excess); |
|
| 346 |
_excess->set(v, (*_excess)[v] + excess); |
|
| 353 |
(*_flow)[a] -= excess; |
|
| 354 |
(*_excess)[v] += excess; |
|
| 347 | 355 |
excess = 0; |
| 348 | 356 |
goto no_more_push; |
| 349 | 357 |
} else {
|
| 350 | 358 |
excess -= rem; |
| 351 |
_excess->set(v, (*_excess)[v] + rem); |
|
| 352 |
_flow->set(a, 0); |
|
| 359 |
(*_excess)[v] += rem; |
|
| 360 |
(*_flow)[a] = 0; |
|
| 353 | 361 |
} |
| 354 | 362 |
} else if (next_bucket > (*_bucket)[v]) {
|
| 355 | 363 |
next_bucket = (*_bucket)[v]; |
| 356 | 364 |
} |
| 357 | 365 |
} |
| 358 | 366 |
|
| 359 | 367 |
no_more_push: |
| 360 | 368 |
|
| 361 |
_excess |
|
| 369 |
(*_excess)[n] = excess; |
|
| 362 | 370 |
|
| 363 | 371 |
if (excess != 0) {
|
| 364 | 372 |
if ((*_next)[n] == INVALID) {
|
| 365 | 373 |
typename std::list<std::list<int> >::iterator new_set = |
| 366 | 374 |
_sets.insert(--_sets.end(), std::list<int>()); |
| 367 | 375 |
new_set->splice(new_set->end(), _sets.back(), |
| 368 | 376 |
_sets.back().begin(), ++_highest); |
| 369 | 377 |
for (std::list<int>::iterator it = new_set->begin(); |
| 370 | 378 |
it != new_set->end(); ++it) {
|
| 371 | 379 |
_dormant[*it] = true; |
| 372 | 380 |
} |
| 373 | 381 |
while (_highest != _sets.back().end() && |
| 374 | 382 |
!(*_active)[_first[*_highest]]) {
|
| 375 | 383 |
++_highest; |
| 376 | 384 |
} |
| 377 | 385 |
} else if (next_bucket == _node_num) {
|
| 378 | 386 |
_first[(*_bucket)[n]] = (*_next)[n]; |
| 379 |
_prev |
|
| 387 |
(*_prev)[(*_next)[n]] = INVALID; |
|
| 380 | 388 |
|
| 381 | 389 |
std::list<std::list<int> >::iterator new_set = |
| 382 | 390 |
_sets.insert(--_sets.end(), std::list<int>()); |
| 383 | 391 |
|
| 384 | 392 |
new_set->push_front(bucket_num); |
| 385 |
_bucket |
|
| 393 |
(*_bucket)[n] = bucket_num; |
|
| 386 | 394 |
_first[bucket_num] = _last[bucket_num] = n; |
| 387 |
_next->set(n, INVALID); |
|
| 388 |
_prev->set(n, INVALID); |
|
| 395 |
(*_next)[n] = INVALID; |
|
| 396 |
(*_prev)[n] = INVALID; |
|
| 389 | 397 |
_dormant[bucket_num] = true; |
| 390 | 398 |
++bucket_num; |
| 391 | 399 |
|
| 392 | 400 |
while (_highest != _sets.back().end() && |
| 393 | 401 |
!(*_active)[_first[*_highest]]) {
|
| 394 | 402 |
++_highest; |
| 395 | 403 |
} |
| 396 | 404 |
} else {
|
| 397 | 405 |
_first[*_highest] = (*_next)[n]; |
| 398 |
_prev |
|
| 406 |
(*_prev)[(*_next)[n]] = INVALID; |
|
| 399 | 407 |
|
| 400 | 408 |
while (next_bucket != *_highest) {
|
| 401 | 409 |
--_highest; |
| 402 | 410 |
} |
| 403 | 411 |
|
| 404 | 412 |
if (_highest == _sets.back().begin()) {
|
| 405 | 413 |
_sets.back().push_front(bucket_num); |
| 406 | 414 |
_dormant[bucket_num] = false; |
| 407 | 415 |
_first[bucket_num] = _last[bucket_num] = INVALID; |
| 408 | 416 |
++bucket_num; |
| 409 | 417 |
} |
| 410 | 418 |
--_highest; |
| 411 | 419 |
|
| 412 |
_bucket->set(n, *_highest); |
|
| 413 |
_next->set(n, _first[*_highest]); |
|
| 420 |
(*_bucket)[n] = *_highest; |
|
| 421 |
(*_next)[n] = _first[*_highest]; |
|
| 414 | 422 |
if (_first[*_highest] != INVALID) {
|
| 415 |
_prev |
|
| 423 |
(*_prev)[_first[*_highest]] = n; |
|
| 416 | 424 |
} else {
|
| 417 | 425 |
_last[*_highest] = n; |
| 418 | 426 |
} |
| 419 | 427 |
_first[*_highest] = n; |
| 420 | 428 |
} |
| 421 | 429 |
} else {
|
| 422 | 430 |
|
| 423 | 431 |
deactivate(n); |
| 424 | 432 |
if (!(*_active)[_first[*_highest]]) {
|
| 425 | 433 |
++_highest; |
| 426 | 434 |
if (_highest != _sets.back().end() && |
| 427 | 435 |
!(*_active)[_first[*_highest]]) {
|
| 428 | 436 |
_highest = _sets.back().end(); |
| 429 | 437 |
} |
| 430 | 438 |
} |
| 431 | 439 |
} |
| 432 | 440 |
} |
| 433 | 441 |
|
| 434 | 442 |
if ((*_excess)[target] < _min_cut) {
|
| 435 | 443 |
_min_cut = (*_excess)[target]; |
| 436 | 444 |
for (NodeIt i(_graph); i != INVALID; ++i) {
|
| 437 |
_min_cut_map |
|
| 445 |
(*_min_cut_map)[i] = true; |
|
| 438 | 446 |
} |
| 439 | 447 |
for (std::list<int>::iterator it = _sets.back().begin(); |
| 440 | 448 |
it != _sets.back().end(); ++it) {
|
| 441 | 449 |
Node n = _first[*it]; |
| 442 | 450 |
while (n != INVALID) {
|
| 443 |
_min_cut_map |
|
| 451 |
(*_min_cut_map)[n] = false; |
|
| 444 | 452 |
n = (*_next)[n]; |
| 445 | 453 |
} |
| 446 | 454 |
} |
| 447 | 455 |
} |
| 448 | 456 |
|
| 449 | 457 |
{
|
| 450 | 458 |
Node new_target; |
| 451 | 459 |
if ((*_prev)[target] != INVALID || (*_next)[target] != INVALID) {
|
| 452 | 460 |
if ((*_next)[target] == INVALID) {
|
| 453 | 461 |
_last[(*_bucket)[target]] = (*_prev)[target]; |
| 454 | 462 |
new_target = (*_prev)[target]; |
| 455 | 463 |
} else {
|
| 456 |
_prev |
|
| 464 |
(*_prev)[(*_next)[target]] = (*_prev)[target]; |
|
| 457 | 465 |
new_target = (*_next)[target]; |
| 458 | 466 |
} |
| 459 | 467 |
if ((*_prev)[target] == INVALID) {
|
| 460 | 468 |
_first[(*_bucket)[target]] = (*_next)[target]; |
| 461 | 469 |
} else {
|
| 462 |
_next |
|
| 470 |
(*_next)[(*_prev)[target]] = (*_next)[target]; |
|
| 463 | 471 |
} |
| 464 | 472 |
} else {
|
| 465 | 473 |
_sets.back().pop_back(); |
| 466 | 474 |
if (_sets.back().empty()) {
|
| 467 | 475 |
_sets.pop_back(); |
| 468 | 476 |
if (_sets.empty()) |
| 469 | 477 |
break; |
| 470 | 478 |
for (std::list<int>::iterator it = _sets.back().begin(); |
| 471 | 479 |
it != _sets.back().end(); ++it) {
|
| 472 | 480 |
_dormant[*it] = false; |
| 473 | 481 |
} |
| 474 | 482 |
} |
| 475 | 483 |
new_target = _last[_sets.back().back()]; |
| 476 | 484 |
} |
| 477 | 485 |
|
| 478 |
_bucket |
|
| 486 |
(*_bucket)[target] = 0; |
|
| 479 | 487 |
|
| 480 |
_source_set |
|
| 488 |
(*_source_set)[target] = true; |
|
| 481 | 489 |
for (OutArcIt a(_graph, target); a != INVALID; ++a) {
|
| 482 | 490 |
Value rem = (*_capacity)[a] - (*_flow)[a]; |
| 483 | 491 |
if (!_tolerance.positive(rem)) continue; |
| 484 | 492 |
Node v = _graph.target(a); |
| 485 | 493 |
if (!(*_active)[v] && !(*_source_set)[v]) {
|
| 486 | 494 |
activate(v); |
| 487 | 495 |
} |
| 488 |
_excess->set(v, (*_excess)[v] + rem); |
|
| 489 |
_flow->set(a, (*_capacity)[a]); |
|
| 496 |
(*_excess)[v] += rem; |
|
| 497 |
(*_flow)[a] = (*_capacity)[a]; |
|
| 490 | 498 |
} |
| 491 | 499 |
|
| 492 | 500 |
for (InArcIt a(_graph, target); a != INVALID; ++a) {
|
| 493 | 501 |
Value rem = (*_flow)[a]; |
| 494 | 502 |
if (!_tolerance.positive(rem)) continue; |
| 495 | 503 |
Node v = _graph.source(a); |
| 496 | 504 |
if (!(*_active)[v] && !(*_source_set)[v]) {
|
| 497 | 505 |
activate(v); |
| 498 | 506 |
} |
| 499 |
_excess->set(v, (*_excess)[v] + rem); |
|
| 500 |
_flow->set(a, 0); |
|
| 507 |
(*_excess)[v] += rem; |
|
| 508 |
(*_flow)[a] = 0; |
|
| 501 | 509 |
} |
| 502 | 510 |
|
| 503 | 511 |
target = new_target; |
| 504 | 512 |
if ((*_active)[target]) {
|
| 505 | 513 |
deactivate(target); |
| 506 | 514 |
} |
| 507 | 515 |
|
| 508 | 516 |
_highest = _sets.back().begin(); |
| 509 | 517 |
while (_highest != _sets.back().end() && |
| 510 | 518 |
!(*_active)[_first[*_highest]]) {
|
| 511 | 519 |
++_highest; |
| 512 | 520 |
} |
| 513 | 521 |
} |
| 514 | 522 |
} |
| 515 | 523 |
} |
| 516 | 524 |
|
| 517 | 525 |
void findMinCutIn() {
|
| 518 | 526 |
|
| 519 | 527 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 520 |
_excess |
|
| 528 |
(*_excess)[n] = 0; |
|
| 529 |
(*_source_set)[n] = false; |
|
| 521 | 530 |
} |
| 522 | 531 |
|
| 523 | 532 |
for (ArcIt a(_graph); a != INVALID; ++a) {
|
| 524 |
_flow |
|
| 533 |
(*_flow)[a] = 0; |
|
| 525 | 534 |
} |
| 526 | 535 |
|
| 527 | 536 |
int bucket_num = 0; |
| 528 | 537 |
std::vector<Node> queue(_node_num); |
| 529 | 538 |
int qfirst = 0, qlast = 0, qsep = 0; |
| 530 | 539 |
|
| 531 | 540 |
{
|
| 532 | 541 |
typename Digraph::template NodeMap<bool> reached(_graph, false); |
| 533 | 542 |
|
| 534 |
reached |
|
| 543 |
reached[_source] = true; |
|
| 535 | 544 |
|
| 536 | 545 |
bool first_set = true; |
| 537 | 546 |
|
| 538 | 547 |
for (NodeIt t(_graph); t != INVALID; ++t) {
|
| 539 | 548 |
if (reached[t]) continue; |
| 540 | 549 |
_sets.push_front(std::list<int>()); |
| 541 | 550 |
|
| 542 | 551 |
queue[qlast++] = t; |
| 543 |
reached |
|
| 552 |
reached[t] = true; |
|
| 544 | 553 |
|
| 545 | 554 |
while (qfirst != qlast) {
|
| 546 | 555 |
if (qsep == qfirst) {
|
| 547 | 556 |
++bucket_num; |
| 548 | 557 |
_sets.front().push_front(bucket_num); |
| 549 | 558 |
_dormant[bucket_num] = !first_set; |
| 550 | 559 |
_first[bucket_num] = _last[bucket_num] = INVALID; |
| 551 | 560 |
qsep = qlast; |
| 552 | 561 |
} |
| 553 | 562 |
|
| 554 | 563 |
Node n = queue[qfirst++]; |
| 555 | 564 |
addItem(n, bucket_num); |
| 556 | 565 |
|
| 557 | 566 |
for (OutArcIt a(_graph, n); a != INVALID; ++a) {
|
| 558 | 567 |
Node u = _graph.target(a); |
| 559 | 568 |
if (!reached[u] && _tolerance.positive((*_capacity)[a])) {
|
| 560 |
reached |
|
| 569 |
reached[u] = true; |
|
| 561 | 570 |
queue[qlast++] = u; |
| 562 | 571 |
} |
| 563 | 572 |
} |
| 564 | 573 |
} |
| 565 | 574 |
first_set = false; |
| 566 | 575 |
} |
| 567 | 576 |
|
| 568 | 577 |
++bucket_num; |
| 569 |
_bucket |
|
| 578 |
(*_bucket)[_source] = 0; |
|
| 570 | 579 |
_dormant[0] = true; |
| 571 | 580 |
} |
| 572 |
_source_set |
|
| 581 |
(*_source_set)[_source] = true; |
|
| 573 | 582 |
|
| 574 | 583 |
Node target = _last[_sets.back().back()]; |
| 575 | 584 |
{
|
| 576 | 585 |
for (InArcIt a(_graph, _source); a != INVALID; ++a) {
|
| 577 | 586 |
if (_tolerance.positive((*_capacity)[a])) {
|
| 578 | 587 |
Node u = _graph.source(a); |
| 579 |
_flow->set(a, (*_capacity)[a]); |
|
| 580 |
_excess->set(u, (*_excess)[u] + (*_capacity)[a]); |
|
| 588 |
(*_flow)[a] = (*_capacity)[a]; |
|
| 589 |
(*_excess)[u] += (*_capacity)[a]; |
|
| 581 | 590 |
if (!(*_active)[u] && u != _source) {
|
| 582 | 591 |
activate(u); |
| 583 | 592 |
} |
| 584 | 593 |
} |
| 585 | 594 |
} |
| 586 | 595 |
if ((*_active)[target]) {
|
| 587 | 596 |
deactivate(target); |
| 588 | 597 |
} |
| 589 | 598 |
|
| 590 | 599 |
_highest = _sets.back().begin(); |
| 591 | 600 |
while (_highest != _sets.back().end() && |
| 592 | 601 |
!(*_active)[_first[*_highest]]) {
|
| 593 | 602 |
++_highest; |
| 594 | 603 |
} |
| 595 | 604 |
} |
| 596 | 605 |
|
| 597 | 606 |
|
| 598 | 607 |
while (true) {
|
| 599 | 608 |
while (_highest != _sets.back().end()) {
|
| 600 | 609 |
Node n = _first[*_highest]; |
| 601 | 610 |
Value excess = (*_excess)[n]; |
| 602 | 611 |
int next_bucket = _node_num; |
| 603 | 612 |
|
| 604 | 613 |
int under_bucket; |
| 605 | 614 |
if (++std::list<int>::iterator(_highest) == _sets.back().end()) {
|
| 606 | 615 |
under_bucket = -1; |
| 607 | 616 |
} else {
|
| 608 | 617 |
under_bucket = *(++std::list<int>::iterator(_highest)); |
| 609 | 618 |
} |
| 610 | 619 |
|
| 611 | 620 |
for (InArcIt a(_graph, n); a != INVALID; ++a) {
|
| 612 | 621 |
Node v = _graph.source(a); |
| 613 | 622 |
if (_dormant[(*_bucket)[v]]) continue; |
| 614 | 623 |
Value rem = (*_capacity)[a] - (*_flow)[a]; |
| 615 | 624 |
if (!_tolerance.positive(rem)) continue; |
| 616 | 625 |
if ((*_bucket)[v] == under_bucket) {
|
| 617 | 626 |
if (!(*_active)[v] && v != target) {
|
| 618 | 627 |
activate(v); |
| 619 | 628 |
} |
| 620 | 629 |
if (!_tolerance.less(rem, excess)) {
|
| 621 |
_flow->set(a, (*_flow)[a] + excess); |
|
| 622 |
_excess->set(v, (*_excess)[v] + excess); |
|
| 630 |
(*_flow)[a] += excess; |
|
| 631 |
(*_excess)[v] += excess; |
|
| 623 | 632 |
excess = 0; |
| 624 | 633 |
goto no_more_push; |
| 625 | 634 |
} else {
|
| 626 | 635 |
excess -= rem; |
| 627 |
_excess->set(v, (*_excess)[v] + rem); |
|
| 628 |
_flow->set(a, (*_capacity)[a]); |
|
| 636 |
(*_excess)[v] += rem; |
|
| 637 |
(*_flow)[a] = (*_capacity)[a]; |
|
| 629 | 638 |
} |
| 630 | 639 |
} else if (next_bucket > (*_bucket)[v]) {
|
| 631 | 640 |
next_bucket = (*_bucket)[v]; |
| 632 | 641 |
} |
| 633 | 642 |
} |
| 634 | 643 |
|
| 635 | 644 |
for (OutArcIt a(_graph, n); a != INVALID; ++a) {
|
| 636 | 645 |
Node v = _graph.target(a); |
| 637 | 646 |
if (_dormant[(*_bucket)[v]]) continue; |
| 638 | 647 |
Value rem = (*_flow)[a]; |
| 639 | 648 |
if (!_tolerance.positive(rem)) continue; |
| 640 | 649 |
if ((*_bucket)[v] == under_bucket) {
|
| 641 | 650 |
if (!(*_active)[v] && v != target) {
|
| 642 | 651 |
activate(v); |
| 643 | 652 |
} |
| 644 | 653 |
if (!_tolerance.less(rem, excess)) {
|
| 645 |
_flow->set(a, (*_flow)[a] - excess); |
|
| 646 |
_excess->set(v, (*_excess)[v] + excess); |
|
| 654 |
(*_flow)[a] -= excess; |
|
| 655 |
(*_excess)[v] += excess; |
|
| 647 | 656 |
excess = 0; |
| 648 | 657 |
goto no_more_push; |
| 649 | 658 |
} else {
|
| 650 | 659 |
excess -= rem; |
| 651 |
_excess->set(v, (*_excess)[v] + rem); |
|
| 652 |
_flow->set(a, 0); |
|
| 660 |
(*_excess)[v] += rem; |
|
| 661 |
(*_flow)[a] = 0; |
|
| 653 | 662 |
} |
| 654 | 663 |
} else if (next_bucket > (*_bucket)[v]) {
|
| 655 | 664 |
next_bucket = (*_bucket)[v]; |
| 656 | 665 |
} |
| 657 | 666 |
} |
| 658 | 667 |
|
| 659 | 668 |
no_more_push: |
| 660 | 669 |
|
| 661 |
_excess |
|
| 670 |
(*_excess)[n] = excess; |
|
| 662 | 671 |
|
| 663 | 672 |
if (excess != 0) {
|
| 664 | 673 |
if ((*_next)[n] == INVALID) {
|
| 665 | 674 |
typename std::list<std::list<int> >::iterator new_set = |
| 666 | 675 |
_sets.insert(--_sets.end(), std::list<int>()); |
| 667 | 676 |
new_set->splice(new_set->end(), _sets.back(), |
| 668 | 677 |
_sets.back().begin(), ++_highest); |
| 669 | 678 |
for (std::list<int>::iterator it = new_set->begin(); |
| 670 | 679 |
it != new_set->end(); ++it) {
|
| 671 | 680 |
_dormant[*it] = true; |
| 672 | 681 |
} |
| 673 | 682 |
while (_highest != _sets.back().end() && |
| 674 | 683 |
!(*_active)[_first[*_highest]]) {
|
| 675 | 684 |
++_highest; |
| 676 | 685 |
} |
| 677 | 686 |
} else if (next_bucket == _node_num) {
|
| 678 | 687 |
_first[(*_bucket)[n]] = (*_next)[n]; |
| 679 |
_prev |
|
| 688 |
(*_prev)[(*_next)[n]] = INVALID; |
|
| 680 | 689 |
|
| 681 | 690 |
std::list<std::list<int> >::iterator new_set = |
| 682 | 691 |
_sets.insert(--_sets.end(), std::list<int>()); |
| 683 | 692 |
|
| 684 | 693 |
new_set->push_front(bucket_num); |
| 685 |
_bucket |
|
| 694 |
(*_bucket)[n] = bucket_num; |
|
| 686 | 695 |
_first[bucket_num] = _last[bucket_num] = n; |
| 687 |
_next->set(n, INVALID); |
|
| 688 |
_prev->set(n, INVALID); |
|
| 696 |
(*_next)[n] = INVALID; |
|
| 697 |
(*_prev)[n] = INVALID; |
|
| 689 | 698 |
_dormant[bucket_num] = true; |
| 690 | 699 |
++bucket_num; |
| 691 | 700 |
|
| 692 | 701 |
while (_highest != _sets.back().end() && |
| 693 | 702 |
!(*_active)[_first[*_highest]]) {
|
| 694 | 703 |
++_highest; |
| 695 | 704 |
} |
| 696 | 705 |
} else {
|
| 697 | 706 |
_first[*_highest] = (*_next)[n]; |
| 698 |
_prev |
|
| 707 |
(*_prev)[(*_next)[n]] = INVALID; |
|
| 699 | 708 |
|
| 700 | 709 |
while (next_bucket != *_highest) {
|
| 701 | 710 |
--_highest; |
| 702 | 711 |
} |
| 703 | 712 |
if (_highest == _sets.back().begin()) {
|
| 704 | 713 |
_sets.back().push_front(bucket_num); |
| 705 | 714 |
_dormant[bucket_num] = false; |
| 706 | 715 |
_first[bucket_num] = _last[bucket_num] = INVALID; |
| 707 | 716 |
++bucket_num; |
| 708 | 717 |
} |
| 709 | 718 |
--_highest; |
| 710 | 719 |
|
| 711 |
_bucket->set(n, *_highest); |
|
| 712 |
_next->set(n, _first[*_highest]); |
|
| 720 |
(*_bucket)[n] = *_highest; |
|
| 721 |
(*_next)[n] = _first[*_highest]; |
|
| 713 | 722 |
if (_first[*_highest] != INVALID) {
|
| 714 |
_prev |
|
| 723 |
(*_prev)[_first[*_highest]] = n; |
|
| 715 | 724 |
} else {
|
| 716 | 725 |
_last[*_highest] = n; |
| 717 | 726 |
} |
| 718 | 727 |
_first[*_highest] = n; |
| 719 | 728 |
} |
| 720 | 729 |
} else {
|
| 721 | 730 |
|
| 722 | 731 |
deactivate(n); |
| 723 | 732 |
if (!(*_active)[_first[*_highest]]) {
|
| 724 | 733 |
++_highest; |
| 725 | 734 |
if (_highest != _sets.back().end() && |
| 726 | 735 |
!(*_active)[_first[*_highest]]) {
|
| 727 | 736 |
_highest = _sets.back().end(); |
| 728 | 737 |
} |
| 729 | 738 |
} |
| 730 | 739 |
} |
| 731 | 740 |
} |
| 732 | 741 |
|
| 733 | 742 |
if ((*_excess)[target] < _min_cut) {
|
| 734 | 743 |
_min_cut = (*_excess)[target]; |
| 735 | 744 |
for (NodeIt i(_graph); i != INVALID; ++i) {
|
| 736 |
_min_cut_map |
|
| 745 |
(*_min_cut_map)[i] = false; |
|
| 737 | 746 |
} |
| 738 | 747 |
for (std::list<int>::iterator it = _sets.back().begin(); |
| 739 | 748 |
it != _sets.back().end(); ++it) {
|
| 740 | 749 |
Node n = _first[*it]; |
| 741 | 750 |
while (n != INVALID) {
|
| 742 |
_min_cut_map |
|
| 751 |
(*_min_cut_map)[n] = true; |
|
| 743 | 752 |
n = (*_next)[n]; |
| 744 | 753 |
} |
| 745 | 754 |
} |
| 746 | 755 |
} |
| 747 | 756 |
|
| 748 | 757 |
{
|
| 749 | 758 |
Node new_target; |
| 750 | 759 |
if ((*_prev)[target] != INVALID || (*_next)[target] != INVALID) {
|
| 751 | 760 |
if ((*_next)[target] == INVALID) {
|
| 752 | 761 |
_last[(*_bucket)[target]] = (*_prev)[target]; |
| 753 | 762 |
new_target = (*_prev)[target]; |
| 754 | 763 |
} else {
|
| 755 |
_prev |
|
| 764 |
(*_prev)[(*_next)[target]] = (*_prev)[target]; |
|
| 756 | 765 |
new_target = (*_next)[target]; |
| 757 | 766 |
} |
| 758 | 767 |
if ((*_prev)[target] == INVALID) {
|
| 759 | 768 |
_first[(*_bucket)[target]] = (*_next)[target]; |
| 760 | 769 |
} else {
|
| 761 |
_next |
|
| 770 |
(*_next)[(*_prev)[target]] = (*_next)[target]; |
|
| 762 | 771 |
} |
| 763 | 772 |
} else {
|
| 764 | 773 |
_sets.back().pop_back(); |
| 765 | 774 |
if (_sets.back().empty()) {
|
| 766 | 775 |
_sets.pop_back(); |
| 767 | 776 |
if (_sets.empty()) |
| 768 | 777 |
break; |
| 769 | 778 |
for (std::list<int>::iterator it = _sets.back().begin(); |
| 770 | 779 |
it != _sets.back().end(); ++it) {
|
| 771 | 780 |
_dormant[*it] = false; |
| 772 | 781 |
} |
| 773 | 782 |
} |
| 774 | 783 |
new_target = _last[_sets.back().back()]; |
| 775 | 784 |
} |
| 776 | 785 |
|
| 777 |
_bucket |
|
| 786 |
(*_bucket)[target] = 0; |
|
| 778 | 787 |
|
| 779 |
_source_set |
|
| 788 |
(*_source_set)[target] = true; |
|
| 780 | 789 |
for (InArcIt a(_graph, target); a != INVALID; ++a) {
|
| 781 | 790 |
Value rem = (*_capacity)[a] - (*_flow)[a]; |
| 782 | 791 |
if (!_tolerance.positive(rem)) continue; |
| 783 | 792 |
Node v = _graph.source(a); |
| 784 | 793 |
if (!(*_active)[v] && !(*_source_set)[v]) {
|
| 785 | 794 |
activate(v); |
| 786 | 795 |
} |
| 787 |
_excess->set(v, (*_excess)[v] + rem); |
|
| 788 |
_flow->set(a, (*_capacity)[a]); |
|
| 796 |
(*_excess)[v] += rem; |
|
| 797 |
(*_flow)[a] = (*_capacity)[a]; |
|
| 789 | 798 |
} |
| 790 | 799 |
|
| 791 | 800 |
for (OutArcIt a(_graph, target); a != INVALID; ++a) {
|
| 792 | 801 |
Value rem = (*_flow)[a]; |
| 793 | 802 |
if (!_tolerance.positive(rem)) continue; |
| 794 | 803 |
Node v = _graph.target(a); |
| 795 | 804 |
if (!(*_active)[v] && !(*_source_set)[v]) {
|
| 796 | 805 |
activate(v); |
| 797 | 806 |
} |
| 798 |
_excess->set(v, (*_excess)[v] + rem); |
|
| 799 |
_flow->set(a, 0); |
|
| 807 |
(*_excess)[v] += rem; |
|
| 808 |
(*_flow)[a] = 0; |
|
| 800 | 809 |
} |
| 801 | 810 |
|
| 802 | 811 |
target = new_target; |
| 803 | 812 |
if ((*_active)[target]) {
|
| 804 | 813 |
deactivate(target); |
| 805 | 814 |
} |
| 806 | 815 |
|
| 807 | 816 |
_highest = _sets.back().begin(); |
| 808 | 817 |
while (_highest != _sets.back().end() && |
| 809 | 818 |
!(*_active)[_first[*_highest]]) {
|
| 810 | 819 |
++_highest; |
| 811 | 820 |
} |
| 812 | 821 |
} |
| 813 | 822 |
} |
| 814 | 823 |
} |
| 815 | 824 |
|
| 816 | 825 |
public: |
| 817 | 826 |
|
| 818 |
/// \name Execution |
|
| 827 |
/// \name Execution Control |
|
| 819 | 828 |
/// The simplest way to execute the algorithm is to use |
| 820 |
/// one of the member functions called \ |
|
| 829 |
/// one of the member functions called \ref run(). |
|
| 821 | 830 |
/// \n |
| 822 |
/// If you need more control on the execution, |
|
| 823 |
/// first you must call \ref init(), then the \ref calculateIn() or |
|
| 824 |
/// |
|
| 831 |
/// If you need better control on the execution, |
|
| 832 |
/// you have to call one of the \ref init() functions first, then |
|
| 833 |
/// \ref calculateOut() and/or \ref calculateIn(). |
|
| 825 | 834 |
|
| 826 | 835 |
/// @{
|
| 827 | 836 |
|
| 828 |
/// \brief |
|
| 837 |
/// \brief Initialize the internal data structures. |
|
| 829 | 838 |
/// |
| 830 |
/// Initializes the internal data structures. It creates |
|
| 831 |
/// the maps, residual graph adaptors and some bucket structures |
|
| 832 |
/// |
|
| 839 |
/// This function initializes the internal data structures. It creates |
|
| 840 |
/// the maps and some bucket structures for the algorithm. |
|
| 841 |
/// The first node is used as the source node for the push-relabel |
|
| 842 |
/// algorithm. |
|
| 833 | 843 |
void init() {
|
| 834 | 844 |
init(NodeIt(_graph)); |
| 835 | 845 |
} |
| 836 | 846 |
|
| 837 |
/// \brief |
|
| 847 |
/// \brief Initialize the internal data structures. |
|
| 838 | 848 |
/// |
| 839 |
/// Initializes the internal data structures. It creates |
|
| 840 |
/// the maps, residual graph adaptor and some bucket structures |
|
| 841 |
/// for the algorithm. Node \c source is used as the push-relabel |
|
| 842 |
/// algorithm's source. |
|
| 849 |
/// This function initializes the internal data structures. It creates |
|
| 850 |
/// the maps and some bucket structures for the algorithm. |
|
| 851 |
/// The given node is used as the source node for the push-relabel |
|
| 852 |
/// algorithm. |
|
| 843 | 853 |
void init(const Node& source) {
|
| 844 | 854 |
_source = source; |
| 845 | 855 |
|
| 846 | 856 |
_node_num = countNodes(_graph); |
| 847 | 857 |
|
| 848 | 858 |
_first.resize(_node_num); |
| 849 | 859 |
_last.resize(_node_num); |
| 850 | 860 |
|
| 851 | 861 |
_dormant.resize(_node_num); |
| 852 | 862 |
|
| 853 | 863 |
if (!_flow) {
|
| 854 | 864 |
_flow = new FlowMap(_graph); |
| 855 | 865 |
} |
| 856 | 866 |
if (!_next) {
|
| 857 | 867 |
_next = new typename Digraph::template NodeMap<Node>(_graph); |
| 858 | 868 |
} |
| 859 | 869 |
if (!_prev) {
|
| 860 | 870 |
_prev = new typename Digraph::template NodeMap<Node>(_graph); |
| 861 | 871 |
} |
| 862 | 872 |
if (!_active) {
|
| 863 | 873 |
_active = new typename Digraph::template NodeMap<bool>(_graph); |
| 864 | 874 |
} |
| 865 | 875 |
if (!_bucket) {
|
| 866 | 876 |
_bucket = new typename Digraph::template NodeMap<int>(_graph); |
| 867 | 877 |
} |
| 868 | 878 |
if (!_excess) {
|
| 869 | 879 |
_excess = new ExcessMap(_graph); |
| 870 | 880 |
} |
| 871 | 881 |
if (!_source_set) {
|
| 872 | 882 |
_source_set = new SourceSetMap(_graph); |
| 873 | 883 |
} |
| 874 | 884 |
if (!_min_cut_map) {
|
| 875 | 885 |
_min_cut_map = new MinCutMap(_graph); |
| 876 | 886 |
} |
| 877 | 887 |
|
| 878 | 888 |
_min_cut = std::numeric_limits<Value>::max(); |
| 879 | 889 |
} |
| 880 | 890 |
|
| 881 | 891 |
|
| 882 |
/// \brief |
|
| 892 |
/// \brief Calculate a minimum cut with \f$ source \f$ on the |
|
| 883 | 893 |
/// source-side. |
| 884 | 894 |
/// |
| 885 |
/// |
|
| 895 |
/// This function calculates a minimum cut with \f$ source \f$ on the |
|
| 886 | 896 |
/// source-side (i.e. a set \f$ X\subsetneq V \f$ with |
| 887 |
/// \f$ source \in X \f$ and minimal |
|
| 897 |
/// \f$ source \in X \f$ and minimal outgoing capacity). |
|
| 898 |
/// |
|
| 899 |
/// \pre \ref init() must be called before using this function. |
|
| 888 | 900 |
void calculateOut() {
|
| 889 | 901 |
findMinCutOut(); |
| 890 | 902 |
} |
| 891 | 903 |
|
| 892 |
/// \brief Calculates a minimum cut with \f$ source \f$ on the |
|
| 893 |
/// target-side. |
|
| 904 |
/// \brief Calculate a minimum cut with \f$ source \f$ on the |
|
| 905 |
/// sink-side. |
|
| 894 | 906 |
/// |
| 895 |
/// Calculates a minimum cut with \f$ source \f$ on the |
|
| 896 |
/// target-side (i.e. a set \f$ X\subsetneq V \f$ with |
|
| 897 |
/// \f$ source \ |
|
| 907 |
/// This function calculates a minimum cut with \f$ source \f$ on the |
|
| 908 |
/// sink-side (i.e. a set \f$ X\subsetneq V \f$ with |
|
| 909 |
/// \f$ source \notin X \f$ and minimal outgoing capacity). |
|
| 910 |
/// |
|
| 911 |
/// \pre \ref init() must be called before using this function. |
|
| 898 | 912 |
void calculateIn() {
|
| 899 | 913 |
findMinCutIn(); |
| 900 | 914 |
} |
| 901 | 915 |
|
| 902 | 916 |
|
| 903 |
/// \brief |
|
| 917 |
/// \brief Run the algorithm. |
|
| 904 | 918 |
/// |
| 905 |
/// Runs the algorithm. It finds nodes \c source and \c target |
|
| 906 |
/// arbitrarily and then calls \ref init(), \ref calculateOut() |
|
| 919 |
/// This function runs the algorithm. It finds nodes \c source and |
|
| 920 |
/// \c target arbitrarily and then calls \ref init(), \ref calculateOut() |
|
| 907 | 921 |
/// and \ref calculateIn(). |
| 908 | 922 |
void run() {
|
| 909 | 923 |
init(); |
| 910 | 924 |
calculateOut(); |
| 911 | 925 |
calculateIn(); |
| 912 | 926 |
} |
| 913 | 927 |
|
| 914 |
/// \brief |
|
| 928 |
/// \brief Run the algorithm. |
|
| 915 | 929 |
/// |
| 916 |
/// Runs the algorithm. It uses the given \c source node, finds a |
|
| 917 |
/// proper \c target and then calls the \ref init(), \ref |
|
| 918 |
/// |
|
| 930 |
/// This function runs the algorithm. It uses the given \c source node, |
|
| 931 |
/// finds a proper \c target node and then calls the \ref init(), |
|
| 932 |
/// \ref calculateOut() and \ref calculateIn(). |
|
| 919 | 933 |
void run(const Node& s) {
|
| 920 | 934 |
init(s); |
| 921 | 935 |
calculateOut(); |
| 922 | 936 |
calculateIn(); |
| 923 | 937 |
} |
| 924 | 938 |
|
| 925 | 939 |
/// @} |
| 926 | 940 |
|
| 927 | 941 |
/// \name Query Functions |
| 928 | 942 |
/// The result of the %HaoOrlin algorithm |
| 929 |
/// can be obtained using these functions. |
|
| 930 |
/// \n |
|
| 931 |
/// Before using these functions, either \ref run(), \ref |
|
| 932 |
/// calculateOut() or \ref calculateIn() must be called. |
|
| 943 |
/// can be obtained using these functions.\n |
|
| 944 |
/// \ref run(), \ref calculateOut() or \ref calculateIn() |
|
| 945 |
/// should be called before using them. |
|
| 933 | 946 |
|
| 934 | 947 |
/// @{
|
| 935 | 948 |
|
| 936 |
/// \brief |
|
| 949 |
/// \brief Return the value of the minimum cut. |
|
| 937 | 950 |
/// |
| 938 |
/// |
|
| 951 |
/// This function returns the value of the minimum cut. |
|
| 952 |
/// |
|
| 953 |
/// \pre \ref run(), \ref calculateOut() or \ref calculateIn() |
|
| 954 |
/// must be called before using this function. |
|
| 939 | 955 |
Value minCutValue() const {
|
| 940 | 956 |
return _min_cut; |
| 941 | 957 |
} |
| 942 | 958 |
|
| 943 | 959 |
|
| 944 |
/// \brief |
|
| 960 |
/// \brief Return a minimum cut. |
|
| 945 | 961 |
/// |
| 946 |
/// Sets \c nodeMap to the characteristic vector of a minimum |
|
| 947 |
/// value cut: it will give a nonempty set \f$ X\subsetneq V \f$ |
|
| 948 |
/// with minimal out-degree (i.e. \c nodeMap will be true exactly |
|
| 949 |
/// for the nodes of \f$ X \f$). \pre nodeMap should be a |
|
| 950 |
/// bool-valued node-map. |
|
| 951 |
template <typename NodeMap> |
|
| 952 |
|
|
| 962 |
/// This function sets \c cutMap to the characteristic vector of a |
|
| 963 |
/// minimum value cut: it will give a non-empty set \f$ X\subsetneq V \f$ |
|
| 964 |
/// with minimal outgoing capacity (i.e. \c cutMap will be \c true exactly |
|
| 965 |
/// for the nodes of \f$ X \f$). |
|
| 966 |
/// |
|
| 967 |
/// \param cutMap A \ref concepts::WriteMap "writable" node map with |
|
| 968 |
/// \c bool (or convertible) value type. |
|
| 969 |
/// |
|
| 970 |
/// \return The value of the minimum cut. |
|
| 971 |
/// |
|
| 972 |
/// \pre \ref run(), \ref calculateOut() or \ref calculateIn() |
|
| 973 |
/// must be called before using this function. |
|
| 974 |
template <typename CutMap> |
|
| 975 |
Value minCutMap(CutMap& cutMap) const {
|
|
| 953 | 976 |
for (NodeIt it(_graph); it != INVALID; ++it) {
|
| 954 |
|
|
| 977 |
cutMap.set(it, (*_min_cut_map)[it]); |
|
| 955 | 978 |
} |
| 956 | 979 |
return _min_cut; |
| 957 | 980 |
} |
| 958 | 981 |
|
| 959 | 982 |
/// @} |
| 960 | 983 |
|
| 961 | 984 |
}; //class HaoOrlin |
| 962 | 985 |
|
| 963 |
|
|
| 964 | 986 |
} //namespace lemon |
| 965 | 987 |
|
| 966 | 988 |
#endif //LEMON_HAO_ORLIN_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef HYPERCUBE_GRAPH_H |
| 20 | 20 |
#define HYPERCUBE_GRAPH_H |
| 21 | 21 |
|
| 22 | 22 |
#include <vector> |
| 23 | 23 |
#include <lemon/core.h> |
| 24 | 24 |
#include <lemon/assert.h> |
| 25 | 25 |
#include <lemon/bits/graph_extender.h> |
| 26 | 26 |
|
| 27 | 27 |
///\ingroup graphs |
| 28 | 28 |
///\file |
| 29 | 29 |
///\brief HypercubeGraph class. |
| 30 | 30 |
|
| 31 | 31 |
namespace lemon {
|
| 32 | 32 |
|
| 33 | 33 |
class HypercubeGraphBase {
|
| 34 | 34 |
|
| 35 | 35 |
public: |
| 36 | 36 |
|
| 37 | 37 |
typedef HypercubeGraphBase Graph; |
| 38 | 38 |
|
| 39 | 39 |
class Node; |
| 40 | 40 |
class Edge; |
| 41 | 41 |
class Arc; |
| 42 | 42 |
|
| 43 | 43 |
public: |
| 44 | 44 |
|
| 45 | 45 |
HypercubeGraphBase() {}
|
| 46 | 46 |
|
| 47 | 47 |
protected: |
| 48 | 48 |
|
| 49 | 49 |
void construct(int dim) {
|
| 50 | 50 |
LEMON_ASSERT(dim >= 1, "The number of dimensions must be at least 1."); |
| 51 | 51 |
_dim = dim; |
| 52 | 52 |
_node_num = 1 << dim; |
| 53 | 53 |
_edge_num = dim * (1 << (dim-1)); |
| 54 | 54 |
} |
| 55 | 55 |
|
| 56 | 56 |
public: |
| 57 | 57 |
|
| 58 | 58 |
typedef True NodeNumTag; |
| 59 | 59 |
typedef True EdgeNumTag; |
| 60 | 60 |
typedef True ArcNumTag; |
| 61 | 61 |
|
| 62 | 62 |
int nodeNum() const { return _node_num; }
|
| 63 | 63 |
int edgeNum() const { return _edge_num; }
|
| 64 | 64 |
int arcNum() const { return 2 * _edge_num; }
|
| 65 | 65 |
|
| 66 | 66 |
int maxNodeId() const { return _node_num - 1; }
|
| 67 | 67 |
int maxEdgeId() const { return _edge_num - 1; }
|
| 68 | 68 |
int maxArcId() const { return 2 * _edge_num - 1; }
|
| 69 | 69 |
|
| 70 | 70 |
static Node nodeFromId(int id) { return Node(id); }
|
| 71 | 71 |
static Edge edgeFromId(int id) { return Edge(id); }
|
| 72 | 72 |
static Arc arcFromId(int id) { return Arc(id); }
|
| 73 | 73 |
|
| 74 | 74 |
static int id(Node node) { return node._id; }
|
| 75 | 75 |
static int id(Edge edge) { return edge._id; }
|
| 76 | 76 |
static int id(Arc arc) { return arc._id; }
|
| 77 | 77 |
|
| 78 | 78 |
Node u(Edge edge) const {
|
| 79 | 79 |
int base = edge._id & ((1 << (_dim-1)) - 1); |
| 80 | 80 |
int k = edge._id >> (_dim-1); |
| 81 | 81 |
return ((base >> k) << (k+1)) | (base & ((1 << k) - 1)); |
| 82 | 82 |
} |
| 83 | 83 |
|
| 84 | 84 |
Node v(Edge edge) const {
|
| 85 | 85 |
int base = edge._id & ((1 << (_dim-1)) - 1); |
| 86 | 86 |
int k = edge._id >> (_dim-1); |
| 87 | 87 |
return ((base >> k) << (k+1)) | (base & ((1 << k) - 1)) | (1 << k); |
| 88 | 88 |
} |
| 89 | 89 |
|
| 90 | 90 |
Node source(Arc arc) const {
|
| 91 | 91 |
return (arc._id & 1) == 1 ? u(arc) : v(arc); |
| 92 | 92 |
} |
| 93 | 93 |
|
| 94 | 94 |
Node target(Arc arc) const {
|
| 95 | 95 |
return (arc._id & 1) == 1 ? v(arc) : u(arc); |
| 96 | 96 |
} |
| 97 | 97 |
|
| 98 | 98 |
typedef True FindEdgeTag; |
| 99 | 99 |
typedef True FindArcTag; |
| 100 | 100 |
|
| 101 | 101 |
Edge findEdge(Node u, Node v, Edge prev = INVALID) const {
|
| 102 | 102 |
if (prev != INVALID) return INVALID; |
| 103 | 103 |
int d = u._id ^ v._id; |
| 104 | 104 |
int k = 0; |
| 105 | 105 |
if (d == 0) return INVALID; |
| 106 | 106 |
for ( ; (d & 1) == 0; d >>= 1) ++k; |
| 107 | 107 |
if (d >> 1 != 0) return INVALID; |
| 108 | 108 |
return (k << (_dim-1)) | ((u._id >> (k+1)) << k) | |
| 109 | 109 |
(u._id & ((1 << k) - 1)); |
| 110 | 110 |
} |
| 111 | 111 |
|
| 112 | 112 |
Arc findArc(Node u, Node v, Arc prev = INVALID) const {
|
| 113 | 113 |
Edge edge = findEdge(u, v, prev); |
| 114 | 114 |
if (edge == INVALID) return INVALID; |
| 115 | 115 |
int k = edge._id >> (_dim-1); |
| 116 | 116 |
return ((u._id >> k) & 1) == 1 ? edge._id << 1 : (edge._id << 1) | 1; |
| 117 | 117 |
} |
| 118 | 118 |
|
| 119 | 119 |
class Node {
|
| 120 | 120 |
friend class HypercubeGraphBase; |
| 121 | 121 |
|
| 122 | 122 |
protected: |
| 123 | 123 |
int _id; |
| 124 | 124 |
Node(int id) : _id(id) {}
|
| 125 | 125 |
public: |
| 126 | 126 |
Node() {}
|
| 127 | 127 |
Node (Invalid) : _id(-1) {}
|
| 128 | 128 |
bool operator==(const Node node) const {return _id == node._id;}
|
| 129 | 129 |
bool operator!=(const Node node) const {return _id != node._id;}
|
| 130 | 130 |
bool operator<(const Node node) const {return _id < node._id;}
|
| 131 | 131 |
}; |
| 132 | 132 |
|
| 133 | 133 |
class Edge {
|
| 134 | 134 |
friend class HypercubeGraphBase; |
| 135 | 135 |
friend class Arc; |
| 136 | 136 |
|
| 137 | 137 |
protected: |
| 138 | 138 |
int _id; |
| 139 | 139 |
|
| 140 | 140 |
Edge(int id) : _id(id) {}
|
| 141 | 141 |
|
| 142 | 142 |
public: |
| 143 | 143 |
Edge() {}
|
| 144 | 144 |
Edge (Invalid) : _id(-1) {}
|
| 145 | 145 |
bool operator==(const Edge edge) const {return _id == edge._id;}
|
| 146 | 146 |
bool operator!=(const Edge edge) const {return _id != edge._id;}
|
| 147 | 147 |
bool operator<(const Edge edge) const {return _id < edge._id;}
|
| 148 | 148 |
}; |
| 149 | 149 |
|
| 150 | 150 |
class Arc {
|
| 151 | 151 |
friend class HypercubeGraphBase; |
| 152 | 152 |
|
| 153 | 153 |
protected: |
| 154 | 154 |
int _id; |
| 155 | 155 |
|
| 156 | 156 |
Arc(int id) : _id(id) {}
|
| 157 | 157 |
|
| 158 | 158 |
public: |
| 159 | 159 |
Arc() {}
|
| 160 | 160 |
Arc (Invalid) : _id(-1) {}
|
| 161 | 161 |
operator Edge() const { return _id != -1 ? Edge(_id >> 1) : INVALID; }
|
| 162 | 162 |
bool operator==(const Arc arc) const {return _id == arc._id;}
|
| 163 | 163 |
bool operator!=(const Arc arc) const {return _id != arc._id;}
|
| 164 | 164 |
bool operator<(const Arc arc) const {return _id < arc._id;}
|
| 165 | 165 |
}; |
| 166 | 166 |
|
| 167 | 167 |
void first(Node& node) const {
|
| 168 | 168 |
node._id = _node_num - 1; |
| 169 | 169 |
} |
| 170 | 170 |
|
| 171 | 171 |
static void next(Node& node) {
|
| 172 | 172 |
--node._id; |
| 173 | 173 |
} |
| 174 | 174 |
|
| 175 | 175 |
void first(Edge& edge) const {
|
| 176 | 176 |
edge._id = _edge_num - 1; |
| 177 | 177 |
} |
| 178 | 178 |
|
| 179 | 179 |
static void next(Edge& edge) {
|
| 180 | 180 |
--edge._id; |
| 181 | 181 |
} |
| 182 | 182 |
|
| 183 | 183 |
void first(Arc& arc) const {
|
| 184 | 184 |
arc._id = 2 * _edge_num - 1; |
| 185 | 185 |
} |
| 186 | 186 |
|
| 187 | 187 |
static void next(Arc& arc) {
|
| 188 | 188 |
--arc._id; |
| 189 | 189 |
} |
| 190 | 190 |
|
| 191 | 191 |
void firstInc(Edge& edge, bool& dir, const Node& node) const {
|
| 192 | 192 |
edge._id = node._id >> 1; |
| 193 | 193 |
dir = (node._id & 1) == 0; |
| 194 | 194 |
} |
| 195 | 195 |
|
| 196 | 196 |
void nextInc(Edge& edge, bool& dir) const {
|
| 197 | 197 |
Node n = dir ? u(edge) : v(edge); |
| 198 | 198 |
int k = (edge._id >> (_dim-1)) + 1; |
| 199 | 199 |
if (k < _dim) {
|
| 200 | 200 |
edge._id = (k << (_dim-1)) | |
| 201 | 201 |
((n._id >> (k+1)) << k) | (n._id & ((1 << k) - 1)); |
| 202 | 202 |
dir = ((n._id >> k) & 1) == 0; |
| 203 | 203 |
} else {
|
| 204 | 204 |
edge._id = -1; |
| 205 | 205 |
dir = true; |
| 206 | 206 |
} |
| 207 | 207 |
} |
| 208 | 208 |
|
| 209 | 209 |
void firstOut(Arc& arc, const Node& node) const {
|
| 210 | 210 |
arc._id = ((node._id >> 1) << 1) | (~node._id & 1); |
| 211 | 211 |
} |
| 212 | 212 |
|
| 213 | 213 |
void nextOut(Arc& arc) const {
|
| 214 | 214 |
Node n = (arc._id & 1) == 1 ? u(arc) : v(arc); |
| 215 | 215 |
int k = (arc._id >> _dim) + 1; |
| 216 | 216 |
if (k < _dim) {
|
| 217 | 217 |
arc._id = (k << (_dim-1)) | |
| 218 | 218 |
((n._id >> (k+1)) << k) | (n._id & ((1 << k) - 1)); |
| 219 | 219 |
arc._id = (arc._id << 1) | (~(n._id >> k) & 1); |
| 220 | 220 |
} else {
|
| 221 | 221 |
arc._id = -1; |
| 222 | 222 |
} |
| 223 | 223 |
} |
| 224 | 224 |
|
| 225 | 225 |
void firstIn(Arc& arc, const Node& node) const {
|
| 226 | 226 |
arc._id = ((node._id >> 1) << 1) | (node._id & 1); |
| 227 | 227 |
} |
| 228 | 228 |
|
| 229 | 229 |
void nextIn(Arc& arc) const {
|
| 230 | 230 |
Node n = (arc._id & 1) == 1 ? v(arc) : u(arc); |
| 231 | 231 |
int k = (arc._id >> _dim) + 1; |
| 232 | 232 |
if (k < _dim) {
|
| 233 | 233 |
arc._id = (k << (_dim-1)) | |
| 234 | 234 |
((n._id >> (k+1)) << k) | (n._id & ((1 << k) - 1)); |
| 235 | 235 |
arc._id = (arc._id << 1) | ((n._id >> k) & 1); |
| 236 | 236 |
} else {
|
| 237 | 237 |
arc._id = -1; |
| 238 | 238 |
} |
| 239 | 239 |
} |
| 240 | 240 |
|
| 241 | 241 |
static bool direction(Arc arc) {
|
| 242 | 242 |
return (arc._id & 1) == 1; |
| 243 | 243 |
} |
| 244 | 244 |
|
| 245 | 245 |
static Arc direct(Edge edge, bool dir) {
|
| 246 | 246 |
return Arc((edge._id << 1) | (dir ? 1 : 0)); |
| 247 | 247 |
} |
| 248 | 248 |
|
| 249 | 249 |
int dimension() const {
|
| 250 | 250 |
return _dim; |
| 251 | 251 |
} |
| 252 | 252 |
|
| 253 | 253 |
bool projection(Node node, int n) const {
|
| 254 | 254 |
return static_cast<bool>(node._id & (1 << n)); |
| 255 | 255 |
} |
| 256 | 256 |
|
| 257 | 257 |
int dimension(Edge edge) const {
|
| 258 | 258 |
return edge._id >> (_dim-1); |
| 259 | 259 |
} |
| 260 | 260 |
|
| 261 | 261 |
int dimension(Arc arc) const {
|
| 262 | 262 |
return arc._id >> _dim; |
| 263 | 263 |
} |
| 264 | 264 |
|
| 265 |
int index(Node node) |
|
| 265 |
static int index(Node node) {
|
|
| 266 | 266 |
return node._id; |
| 267 | 267 |
} |
| 268 | 268 |
|
| 269 | 269 |
Node operator()(int ix) const {
|
| 270 | 270 |
return Node(ix); |
| 271 | 271 |
} |
| 272 | 272 |
|
| 273 | 273 |
private: |
| 274 | 274 |
int _dim; |
| 275 | 275 |
int _node_num, _edge_num; |
| 276 | 276 |
}; |
| 277 | 277 |
|
| 278 | 278 |
|
| 279 | 279 |
typedef GraphExtender<HypercubeGraphBase> ExtendedHypercubeGraphBase; |
| 280 | 280 |
|
| 281 | 281 |
/// \ingroup graphs |
| 282 | 282 |
/// |
| 283 | 283 |
/// \brief Hypercube graph class |
| 284 | 284 |
/// |
| 285 |
/// This class implements a special graph type. The nodes of the graph |
|
| 286 |
/// are indiced with integers with at most \c dim binary digits. |
|
| 285 |
/// HypercubeGraph implements a special graph type. The nodes of the |
|
| 286 |
/// graph are indexed with integers having at most \c dim binary digits. |
|
| 287 | 287 |
/// Two nodes are connected in the graph if and only if their indices |
| 288 | 288 |
/// differ only on one position in the binary form. |
| 289 |
/// This class is completely static and it needs constant memory space. |
|
| 290 |
/// Thus you can neither add nor delete nodes or edges, however |
|
| 291 |
/// the structure can be resized using resize(). |
|
| 292 |
/// |
|
| 293 |
/// This type fully conforms to the \ref concepts::Graph "Graph concept". |
|
| 294 |
/// Most of its member functions and nested classes are documented |
|
| 295 |
/// only in the concept class. |
|
| 289 | 296 |
/// |
| 290 | 297 |
/// \note The type of the indices is chosen to \c int for efficiency |
| 291 | 298 |
/// reasons. Thus the maximum dimension of this implementation is 26 |
| 292 | 299 |
/// (assuming that the size of \c int is 32 bit). |
| 293 |
/// |
|
| 294 |
/// This graph type is fully conform to the \ref concepts::Graph |
|
| 295 |
/// "Graph" concept, and it also has an important extra feature |
|
| 296 |
/// that its maps are real \ref concepts::ReferenceMap |
|
| 297 |
/// "reference map"s. |
|
| 298 | 300 |
class HypercubeGraph : public ExtendedHypercubeGraphBase {
|
| 301 |
typedef ExtendedHypercubeGraphBase Parent; |
|
| 302 |
|
|
| 299 | 303 |
public: |
| 300 | 304 |
|
| 301 |
typedef ExtendedHypercubeGraphBase Parent; |
|
| 302 |
|
|
| 303 | 305 |
/// \brief Constructs a hypercube graph with \c dim dimensions. |
| 304 | 306 |
/// |
| 305 | 307 |
/// Constructs a hypercube graph with \c dim dimensions. |
| 306 | 308 |
HypercubeGraph(int dim) { construct(dim); }
|
| 307 | 309 |
|
| 310 |
/// \brief Resizes the graph |
|
| 311 |
/// |
|
| 312 |
/// This function resizes the graph. It fully destroys and |
|
| 313 |
/// rebuilds the structure, therefore the maps of the graph will be |
|
| 314 |
/// reallocated automatically and the previous values will be lost. |
|
| 315 |
void resize(int dim) {
|
|
| 316 |
Parent::notifier(Arc()).clear(); |
|
| 317 |
Parent::notifier(Edge()).clear(); |
|
| 318 |
Parent::notifier(Node()).clear(); |
|
| 319 |
construct(dim); |
|
| 320 |
Parent::notifier(Node()).build(); |
|
| 321 |
Parent::notifier(Edge()).build(); |
|
| 322 |
Parent::notifier(Arc()).build(); |
|
| 323 |
} |
|
| 324 |
|
|
| 308 | 325 |
/// \brief The number of dimensions. |
| 309 | 326 |
/// |
| 310 | 327 |
/// Gives back the number of dimensions. |
| 311 | 328 |
int dimension() const {
|
| 312 | 329 |
return Parent::dimension(); |
| 313 | 330 |
} |
| 314 | 331 |
|
| 315 | 332 |
/// \brief Returns \c true if the n'th bit of the node is one. |
| 316 | 333 |
/// |
| 317 | 334 |
/// Returns \c true if the n'th bit of the node is one. |
| 318 | 335 |
bool projection(Node node, int n) const {
|
| 319 | 336 |
return Parent::projection(node, n); |
| 320 | 337 |
} |
| 321 | 338 |
|
| 322 | 339 |
/// \brief The dimension id of an edge. |
| 323 | 340 |
/// |
| 324 | 341 |
/// Gives back the dimension id of the given edge. |
| 325 |
/// It is in the [0..dim-1] |
|
| 342 |
/// It is in the range <tt>[0..dim-1]</tt>. |
|
| 326 | 343 |
int dimension(Edge edge) const {
|
| 327 | 344 |
return Parent::dimension(edge); |
| 328 | 345 |
} |
| 329 | 346 |
|
| 330 | 347 |
/// \brief The dimension id of an arc. |
| 331 | 348 |
/// |
| 332 | 349 |
/// Gives back the dimension id of the given arc. |
| 333 |
/// It is in the [0..dim-1] |
|
| 350 |
/// It is in the range <tt>[0..dim-1]</tt>. |
|
| 334 | 351 |
int dimension(Arc arc) const {
|
| 335 | 352 |
return Parent::dimension(arc); |
| 336 | 353 |
} |
| 337 | 354 |
|
| 338 | 355 |
/// \brief The index of a node. |
| 339 | 356 |
/// |
| 340 | 357 |
/// Gives back the index of the given node. |
| 341 | 358 |
/// The lower bits of the integer describes the node. |
| 342 |
int index(Node node) |
|
| 359 |
static int index(Node node) {
|
|
| 343 | 360 |
return Parent::index(node); |
| 344 | 361 |
} |
| 345 | 362 |
|
| 346 | 363 |
/// \brief Gives back a node by its index. |
| 347 | 364 |
/// |
| 348 | 365 |
/// Gives back a node by its index. |
| 349 | 366 |
Node operator()(int ix) const {
|
| 350 | 367 |
return Parent::operator()(ix); |
| 351 | 368 |
} |
| 352 | 369 |
|
| 353 | 370 |
/// \brief Number of nodes. |
| 354 | 371 |
int nodeNum() const { return Parent::nodeNum(); }
|
| 355 | 372 |
/// \brief Number of edges. |
| 356 | 373 |
int edgeNum() const { return Parent::edgeNum(); }
|
| 357 | 374 |
/// \brief Number of arcs. |
| 358 | 375 |
int arcNum() const { return Parent::arcNum(); }
|
| 359 | 376 |
|
| 360 | 377 |
/// \brief Linear combination map. |
| 361 | 378 |
/// |
| 362 | 379 |
/// This map makes possible to give back a linear combination |
| 363 | 380 |
/// for each node. It works like the \c std::accumulate function, |
| 364 | 381 |
/// so it accumulates the \c bf binary function with the \c fv first |
| 365 | 382 |
/// value. The map accumulates only on that positions (dimensions) |
| 366 | 383 |
/// where the index of the node is one. The values that have to be |
| 367 | 384 |
/// accumulated should be given by the \c begin and \c end iterators |
| 368 | 385 |
/// and the length of this range should be equal to the dimension |
| 369 | 386 |
/// number of the graph. |
| 370 | 387 |
/// |
| 371 | 388 |
///\code |
| 372 | 389 |
/// const int DIM = 3; |
| 373 | 390 |
/// HypercubeGraph graph(DIM); |
| 374 | 391 |
/// dim2::Point<double> base[DIM]; |
| 375 | 392 |
/// for (int k = 0; k < DIM; ++k) {
|
| 376 | 393 |
/// base[k].x = rnd(); |
| 377 | 394 |
/// base[k].y = rnd(); |
| 378 | 395 |
/// } |
| 379 | 396 |
/// HypercubeGraph::HyperMap<dim2::Point<double> > |
| 380 | 397 |
/// pos(graph, base, base + DIM, dim2::Point<double>(0.0, 0.0)); |
| 381 | 398 |
///\endcode |
| 382 | 399 |
/// |
| 383 | 400 |
/// \see HypercubeGraph |
| 384 | 401 |
template <typename T, typename BF = std::plus<T> > |
| 385 | 402 |
class HyperMap {
|
| 386 | 403 |
public: |
| 387 | 404 |
|
| 388 | 405 |
/// \brief The key type of the map |
| 389 | 406 |
typedef Node Key; |
| 390 | 407 |
/// \brief The value type of the map |
| 391 | 408 |
typedef T Value; |
| 392 | 409 |
|
| 393 | 410 |
/// \brief Constructor for HyperMap. |
| 394 | 411 |
/// |
| 395 | 412 |
/// Construct a HyperMap for the given graph. The values that have |
| 396 | 413 |
/// to be accumulated should be given by the \c begin and \c end |
| 397 | 414 |
/// iterators and the length of this range should be equal to the |
| 398 | 415 |
/// dimension number of the graph. |
| 399 | 416 |
/// |
| 400 | 417 |
/// This map accumulates the \c bf binary function with the \c fv |
| 401 | 418 |
/// first value on that positions (dimensions) where the index of |
| 402 | 419 |
/// the node is one. |
| 403 | 420 |
template <typename It> |
| 404 | 421 |
HyperMap(const Graph& graph, It begin, It end, |
| 405 | 422 |
T fv = 0, const BF& bf = BF()) |
| 406 | 423 |
: _graph(graph), _values(begin, end), _first_value(fv), _bin_func(bf) |
| 407 | 424 |
{
|
| 408 | 425 |
LEMON_ASSERT(_values.size() == graph.dimension(), |
| 409 | 426 |
"Wrong size of range"); |
| 410 | 427 |
} |
| 411 | 428 |
|
| 412 | 429 |
/// \brief The partial accumulated value. |
| 413 | 430 |
/// |
| 414 | 431 |
/// Gives back the partial accumulated value. |
| 415 | 432 |
Value operator[](const Key& k) const {
|
| 416 | 433 |
Value val = _first_value; |
| 417 | 434 |
int id = _graph.index(k); |
| 418 | 435 |
int n = 0; |
| 419 | 436 |
while (id != 0) {
|
| 420 | 437 |
if (id & 1) {
|
| 421 | 438 |
val = _bin_func(val, _values[n]); |
| 422 | 439 |
} |
| 423 | 440 |
id >>= 1; |
| 424 | 441 |
++n; |
| 425 | 442 |
} |
| 426 | 443 |
return val; |
| 427 | 444 |
} |
| 428 | 445 |
|
| 429 | 446 |
private: |
| 430 | 447 |
const Graph& _graph; |
| 431 | 448 |
std::vector<T> _values; |
| 432 | 449 |
T _first_value; |
| 433 | 450 |
BF _bin_func; |
| 434 | 451 |
}; |
| 435 | 452 |
|
| 436 | 453 |
}; |
| 437 | 454 |
|
| 438 | 455 |
} |
| 439 | 456 |
|
| 440 | 457 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_KRUSKAL_H |
| 20 | 20 |
#define LEMON_KRUSKAL_H |
| 21 | 21 |
|
| 22 | 22 |
#include <algorithm> |
| 23 | 23 |
#include <vector> |
| 24 | 24 |
#include <lemon/unionfind.h> |
| 25 | 25 |
#include <lemon/maps.h> |
| 26 | 26 |
|
| 27 | 27 |
#include <lemon/core.h> |
| 28 | 28 |
#include <lemon/bits/traits.h> |
| 29 | 29 |
|
| 30 | 30 |
///\ingroup spantree |
| 31 | 31 |
///\file |
| 32 | 32 |
///\brief Kruskal's algorithm to compute a minimum cost spanning tree |
| 33 | 33 |
/// |
| 34 | 34 |
///Kruskal's algorithm to compute a minimum cost spanning tree. |
| 35 | 35 |
/// |
| 36 | 36 |
|
| 37 | 37 |
namespace lemon {
|
| 38 | 38 |
|
| 39 | 39 |
namespace _kruskal_bits {
|
| 40 | 40 |
|
| 41 | 41 |
// Kruskal for directed graphs. |
| 42 | 42 |
|
| 43 | 43 |
template <typename Digraph, typename In, typename Out> |
| 44 | 44 |
typename disable_if<lemon::UndirectedTagIndicator<Digraph>, |
| 45 | 45 |
typename In::value_type::second_type >::type |
| 46 | 46 |
kruskal(const Digraph& digraph, const In& in, Out& out,dummy<0> = 0) {
|
| 47 | 47 |
typedef typename In::value_type::second_type Value; |
| 48 | 48 |
typedef typename Digraph::template NodeMap<int> IndexMap; |
| 49 | 49 |
typedef typename Digraph::Node Node; |
| 50 | 50 |
|
| 51 | 51 |
IndexMap index(digraph); |
| 52 | 52 |
UnionFind<IndexMap> uf(index); |
| 53 | 53 |
for (typename Digraph::NodeIt it(digraph); it != INVALID; ++it) {
|
| 54 | 54 |
uf.insert(it); |
| 55 | 55 |
} |
| 56 | 56 |
|
| 57 | 57 |
Value tree_value = 0; |
| 58 | 58 |
for (typename In::const_iterator it = in.begin(); it != in.end(); ++it) {
|
| 59 | 59 |
if (uf.join(digraph.target(it->first),digraph.source(it->first))) {
|
| 60 | 60 |
out.set(it->first, true); |
| 61 | 61 |
tree_value += it->second; |
| 62 | 62 |
} |
| 63 | 63 |
else {
|
| 64 | 64 |
out.set(it->first, false); |
| 65 | 65 |
} |
| 66 | 66 |
} |
| 67 | 67 |
return tree_value; |
| 68 | 68 |
} |
| 69 | 69 |
|
| 70 | 70 |
// Kruskal for undirected graphs. |
| 71 | 71 |
|
| 72 | 72 |
template <typename Graph, typename In, typename Out> |
| 73 | 73 |
typename enable_if<lemon::UndirectedTagIndicator<Graph>, |
| 74 | 74 |
typename In::value_type::second_type >::type |
| 75 | 75 |
kruskal(const Graph& graph, const In& in, Out& out,dummy<1> = 1) {
|
| 76 | 76 |
typedef typename In::value_type::second_type Value; |
| 77 | 77 |
typedef typename Graph::template NodeMap<int> IndexMap; |
| 78 | 78 |
typedef typename Graph::Node Node; |
| 79 | 79 |
|
| 80 | 80 |
IndexMap index(graph); |
| 81 | 81 |
UnionFind<IndexMap> uf(index); |
| 82 | 82 |
for (typename Graph::NodeIt it(graph); it != INVALID; ++it) {
|
| 83 | 83 |
uf.insert(it); |
| 84 | 84 |
} |
| 85 | 85 |
|
| 86 | 86 |
Value tree_value = 0; |
| 87 | 87 |
for (typename In::const_iterator it = in.begin(); it != in.end(); ++it) {
|
| 88 | 88 |
if (uf.join(graph.u(it->first),graph.v(it->first))) {
|
| 89 | 89 |
out.set(it->first, true); |
| 90 | 90 |
tree_value += it->second; |
| 91 | 91 |
} |
| 92 | 92 |
else {
|
| 93 | 93 |
out.set(it->first, false); |
| 94 | 94 |
} |
| 95 | 95 |
} |
| 96 | 96 |
return tree_value; |
| 97 | 97 |
} |
| 98 | 98 |
|
| 99 | 99 |
|
| 100 | 100 |
template <typename Sequence> |
| 101 | 101 |
struct PairComp {
|
| 102 | 102 |
typedef typename Sequence::value_type Value; |
| 103 | 103 |
bool operator()(const Value& left, const Value& right) {
|
| 104 | 104 |
return left.second < right.second; |
| 105 | 105 |
} |
| 106 | 106 |
}; |
| 107 | 107 |
|
| 108 | 108 |
template <typename In, typename Enable = void> |
| 109 | 109 |
struct SequenceInputIndicator {
|
| 110 | 110 |
static const bool value = false; |
| 111 | 111 |
}; |
| 112 | 112 |
|
| 113 | 113 |
template <typename In> |
| 114 | 114 |
struct SequenceInputIndicator<In, |
| 115 | 115 |
typename exists<typename In::value_type::first_type>::type> {
|
| 116 | 116 |
static const bool value = true; |
| 117 | 117 |
}; |
| 118 | 118 |
|
| 119 | 119 |
template <typename In, typename Enable = void> |
| 120 | 120 |
struct MapInputIndicator {
|
| 121 | 121 |
static const bool value = false; |
| 122 | 122 |
}; |
| 123 | 123 |
|
| 124 | 124 |
template <typename In> |
| 125 | 125 |
struct MapInputIndicator<In, |
| 126 | 126 |
typename exists<typename In::Value>::type> {
|
| 127 | 127 |
static const bool value = true; |
| 128 | 128 |
}; |
| 129 | 129 |
|
| 130 | 130 |
template <typename In, typename Enable = void> |
| 131 | 131 |
struct SequenceOutputIndicator {
|
| 132 | 132 |
static const bool value = false; |
| 133 | 133 |
}; |
| 134 | 134 |
|
| 135 | 135 |
template <typename Out> |
| 136 | 136 |
struct SequenceOutputIndicator<Out, |
| 137 | 137 |
typename exists<typename Out::value_type>::type> {
|
| 138 | 138 |
static const bool value = true; |
| 139 | 139 |
}; |
| 140 | 140 |
|
| 141 | 141 |
template <typename Out, typename Enable = void> |
| 142 | 142 |
struct MapOutputIndicator {
|
| 143 | 143 |
static const bool value = false; |
| 144 | 144 |
}; |
| 145 | 145 |
|
| 146 | 146 |
template <typename Out> |
| 147 | 147 |
struct MapOutputIndicator<Out, |
| 148 | 148 |
typename exists<typename Out::Value>::type> {
|
| 149 | 149 |
static const bool value = true; |
| 150 | 150 |
}; |
| 151 | 151 |
|
| 152 | 152 |
template <typename In, typename InEnable = void> |
| 153 | 153 |
struct KruskalValueSelector {};
|
| 154 | 154 |
|
| 155 | 155 |
template <typename In> |
| 156 | 156 |
struct KruskalValueSelector<In, |
| 157 | 157 |
typename enable_if<SequenceInputIndicator<In>, void>::type> |
| 158 | 158 |
{
|
| 159 | 159 |
typedef typename In::value_type::second_type Value; |
| 160 | 160 |
}; |
| 161 | 161 |
|
| 162 | 162 |
template <typename In> |
| 163 | 163 |
struct KruskalValueSelector<In, |
| 164 | 164 |
typename enable_if<MapInputIndicator<In>, void>::type> |
| 165 | 165 |
{
|
| 166 | 166 |
typedef typename In::Value Value; |
| 167 | 167 |
}; |
| 168 | 168 |
|
| 169 | 169 |
template <typename Graph, typename In, typename Out, |
| 170 | 170 |
typename InEnable = void> |
| 171 | 171 |
struct KruskalInputSelector {};
|
| 172 | 172 |
|
| 173 | 173 |
template <typename Graph, typename In, typename Out, |
| 174 | 174 |
typename InEnable = void> |
| 175 | 175 |
struct KruskalOutputSelector {};
|
| 176 | 176 |
|
| 177 | 177 |
template <typename Graph, typename In, typename Out> |
| 178 | 178 |
struct KruskalInputSelector<Graph, In, Out, |
| 179 | 179 |
typename enable_if<SequenceInputIndicator<In>, void>::type > |
| 180 | 180 |
{
|
| 181 | 181 |
typedef typename In::value_type::second_type Value; |
| 182 | 182 |
|
| 183 | 183 |
static Value kruskal(const Graph& graph, const In& in, Out& out) {
|
| 184 | 184 |
return KruskalOutputSelector<Graph, In, Out>:: |
| 185 | 185 |
kruskal(graph, in, out); |
| 186 | 186 |
} |
| 187 | 187 |
|
| 188 | 188 |
}; |
| 189 | 189 |
|
| 190 | 190 |
template <typename Graph, typename In, typename Out> |
| 191 | 191 |
struct KruskalInputSelector<Graph, In, Out, |
| 192 | 192 |
typename enable_if<MapInputIndicator<In>, void>::type > |
| 193 | 193 |
{
|
| 194 | 194 |
typedef typename In::Value Value; |
| 195 | 195 |
static Value kruskal(const Graph& graph, const In& in, Out& out) {
|
| 196 | 196 |
typedef typename In::Key MapArc; |
| 197 | 197 |
typedef typename In::Value Value; |
| 198 | 198 |
typedef typename ItemSetTraits<Graph, MapArc>::ItemIt MapArcIt; |
| 199 | 199 |
typedef std::vector<std::pair<MapArc, Value> > Sequence; |
| 200 | 200 |
Sequence seq; |
| 201 | 201 |
|
| 202 | 202 |
for (MapArcIt it(graph); it != INVALID; ++it) {
|
| 203 | 203 |
seq.push_back(std::make_pair(it, in[it])); |
| 204 | 204 |
} |
| 205 | 205 |
|
| 206 | 206 |
std::sort(seq.begin(), seq.end(), PairComp<Sequence>()); |
| 207 | 207 |
return KruskalOutputSelector<Graph, Sequence, Out>:: |
| 208 | 208 |
kruskal(graph, seq, out); |
| 209 | 209 |
} |
| 210 | 210 |
}; |
| 211 | 211 |
|
| 212 | 212 |
template <typename T> |
| 213 | 213 |
struct RemoveConst {
|
| 214 | 214 |
typedef T type; |
| 215 | 215 |
}; |
| 216 | 216 |
|
| 217 | 217 |
template <typename T> |
| 218 | 218 |
struct RemoveConst<const T> {
|
| 219 | 219 |
typedef T type; |
| 220 | 220 |
}; |
| 221 | 221 |
|
| 222 | 222 |
template <typename Graph, typename In, typename Out> |
| 223 | 223 |
struct KruskalOutputSelector<Graph, In, Out, |
| 224 | 224 |
typename enable_if<SequenceOutputIndicator<Out>, void>::type > |
| 225 | 225 |
{
|
| 226 | 226 |
typedef typename In::value_type::second_type Value; |
| 227 | 227 |
|
| 228 | 228 |
static Value kruskal(const Graph& graph, const In& in, Out& out) {
|
| 229 | 229 |
typedef LoggerBoolMap<typename RemoveConst<Out>::type> Map; |
| 230 | 230 |
Map map(out); |
| 231 | 231 |
return _kruskal_bits::kruskal(graph, in, map); |
| 232 | 232 |
} |
| 233 | 233 |
|
| 234 | 234 |
}; |
| 235 | 235 |
|
| 236 | 236 |
template <typename Graph, typename In, typename Out> |
| 237 | 237 |
struct KruskalOutputSelector<Graph, In, Out, |
| 238 | 238 |
typename enable_if<MapOutputIndicator<Out>, void>::type > |
| 239 | 239 |
{
|
| 240 | 240 |
typedef typename In::value_type::second_type Value; |
| 241 | 241 |
|
| 242 | 242 |
static Value kruskal(const Graph& graph, const In& in, Out& out) {
|
| 243 | 243 |
return _kruskal_bits::kruskal(graph, in, out); |
| 244 | 244 |
} |
| 245 | 245 |
}; |
| 246 | 246 |
|
| 247 | 247 |
} |
| 248 | 248 |
|
| 249 | 249 |
/// \ingroup spantree |
| 250 | 250 |
/// |
| 251 |
/// \brief Kruskal algorithm |
|
| 251 |
/// \brief Kruskal's algorithm for finding a minimum cost spanning tree of |
|
| 252 | 252 |
/// a graph. |
| 253 | 253 |
/// |
| 254 | 254 |
/// This function runs Kruskal's algorithm to find a minimum cost |
| 255 |
/// spanning tree. |
|
| 255 |
/// spanning tree of a graph. |
|
| 256 | 256 |
/// Due to some C++ hacking, it accepts various input and output types. |
| 257 | 257 |
/// |
| 258 | 258 |
/// \param g The graph the algorithm runs on. |
| 259 | 259 |
/// It can be either \ref concepts::Digraph "directed" or |
| 260 | 260 |
/// \ref concepts::Graph "undirected". |
| 261 | 261 |
/// If the graph is directed, the algorithm consider it to be |
| 262 | 262 |
/// undirected by disregarding the direction of the arcs. |
| 263 | 263 |
/// |
| 264 | 264 |
/// \param in This object is used to describe the arc/edge costs. |
| 265 | 265 |
/// It can be one of the following choices. |
| 266 | 266 |
/// - An STL compatible 'Forward Container' with |
| 267 |
/// <tt>std::pair<GR::Arc,X></tt> or |
|
| 268 |
/// <tt>std::pair<GR::Edge,X></tt> as its <tt>value_type</tt>, where |
|
| 269 |
/// |
|
| 267 |
/// <tt>std::pair<GR::Arc,C></tt> or |
|
| 268 |
/// <tt>std::pair<GR::Edge,C></tt> as its <tt>value_type</tt>, where |
|
| 269 |
/// \c C is the type of the costs. The pairs indicates the arcs/edges |
|
| 270 | 270 |
/// along with the assigned cost. <em>They must be in a |
| 271 | 271 |
/// cost-ascending order.</em> |
| 272 | 272 |
/// - Any readable arc/edge map. The values of the map indicate the |
| 273 | 273 |
/// arc/edge costs. |
| 274 | 274 |
/// |
| 275 | 275 |
/// \retval out Here we also have a choice. |
| 276 |
/// - It can be a writable \c bool arc/edge map. After running the |
|
| 277 |
/// algorithm it will contain the found minimum cost spanning |
|
| 276 |
/// - It can be a writable arc/edge map with \c bool value type. After |
|
| 277 |
/// running the algorithm it will contain the found minimum cost spanning |
|
| 278 | 278 |
/// tree: the value of an arc/edge will be set to \c true if it belongs |
| 279 | 279 |
/// to the tree, otherwise it will be set to \c false. The value of |
| 280 | 280 |
/// each arc/edge will be set exactly once. |
| 281 | 281 |
/// - It can also be an iteraror of an STL Container with |
| 282 | 282 |
/// <tt>GR::Arc</tt> or <tt>GR::Edge</tt> as its |
| 283 | 283 |
/// <tt>value_type</tt>. The algorithm copies the elements of the |
| 284 | 284 |
/// found tree into this sequence. For example, if we know that the |
| 285 | 285 |
/// spanning tree of the graph \c g has say 53 arcs, then we can |
| 286 | 286 |
/// put its arcs into an STL vector \c tree with a code like this. |
| 287 | 287 |
///\code |
| 288 | 288 |
/// std::vector<Arc> tree(53); |
| 289 | 289 |
/// kruskal(g,cost,tree.begin()); |
| 290 | 290 |
///\endcode |
| 291 | 291 |
/// Or if we don't know in advance the size of the tree, we can |
| 292 | 292 |
/// write this. |
| 293 | 293 |
///\code |
| 294 | 294 |
/// std::vector<Arc> tree; |
| 295 | 295 |
/// kruskal(g,cost,std::back_inserter(tree)); |
| 296 | 296 |
///\endcode |
| 297 | 297 |
/// |
| 298 | 298 |
/// \return The total cost of the found spanning tree. |
| 299 | 299 |
/// |
| 300 | 300 |
/// \note If the input graph is not (weakly) connected, a spanning |
| 301 | 301 |
/// forest is calculated instead of a spanning tree. |
| 302 | 302 |
|
| 303 | 303 |
#ifdef DOXYGEN |
| 304 |
template <class Graph, class In, class Out> |
|
| 305 |
Value kruskal(GR const& g, const In& in, Out& out) |
|
| 304 |
template <typename Graph, typename In, typename Out> |
|
| 305 |
Value kruskal(const Graph& g, const In& in, Out& out) |
|
| 306 | 306 |
#else |
| 307 | 307 |
template <class Graph, class In, class Out> |
| 308 | 308 |
inline typename _kruskal_bits::KruskalValueSelector<In>::Value |
| 309 | 309 |
kruskal(const Graph& graph, const In& in, Out& out) |
| 310 | 310 |
#endif |
| 311 | 311 |
{
|
| 312 | 312 |
return _kruskal_bits::KruskalInputSelector<Graph, In, Out>:: |
| 313 | 313 |
kruskal(graph, in, out); |
| 314 | 314 |
} |
| 315 | 315 |
|
| 316 | 316 |
|
| 317 |
|
|
| 318 |
|
|
| 319 | 317 |
template <class Graph, class In, class Out> |
| 320 | 318 |
inline typename _kruskal_bits::KruskalValueSelector<In>::Value |
| 321 | 319 |
kruskal(const Graph& graph, const In& in, const Out& out) |
| 322 | 320 |
{
|
| 323 | 321 |
return _kruskal_bits::KruskalInputSelector<Graph, In, const Out>:: |
| 324 | 322 |
kruskal(graph, in, out); |
| 325 | 323 |
} |
| 326 | 324 |
|
| 327 | 325 |
} //namespace lemon |
| 328 | 326 |
|
| 329 | 327 |
#endif //LEMON_KRUSKAL_H |
| 1 | 1 |
prefix=@prefix@ |
| 2 | 2 |
exec_prefix=@exec_prefix@ |
| 3 | 3 |
libdir=@libdir@ |
| 4 | 4 |
includedir=@includedir@ |
| 5 | 5 |
|
| 6 | 6 |
Name: @PACKAGE_NAME@ |
| 7 |
Description: Library |
|
| 7 |
Description: Library for Efficient Modeling and Optimization in Networks |
|
| 8 | 8 |
Version: @PACKAGE_VERSION@ |
| 9 |
Libs: -L${libdir} -lemon
|
|
| 9 |
Libs: -L${libdir} -lemon @GLPK_LIBS@ @CPLEX_LIBS@ @SOPLEX_LIBS@ @CLP_LIBS@ @CBC_LIBS@
|
|
| 10 | 10 |
Cflags: -I${includedir}
|
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
///\ingroup lemon_io |
| 20 | 20 |
///\file |
| 21 | 21 |
///\brief \ref lgf-format "LEMON Graph Format" reader. |
| 22 | 22 |
|
| 23 | 23 |
|
| 24 | 24 |
#ifndef LEMON_LGF_READER_H |
| 25 | 25 |
#define LEMON_LGF_READER_H |
| 26 | 26 |
|
| 27 | 27 |
#include <iostream> |
| 28 | 28 |
#include <fstream> |
| 29 | 29 |
#include <sstream> |
| 30 | 30 |
|
| 31 | 31 |
#include <set> |
| 32 | 32 |
#include <map> |
| 33 | 33 |
|
| 34 | 34 |
#include <lemon/core.h> |
| 35 | 35 |
|
| 36 | 36 |
#include <lemon/lgf_writer.h> |
| 37 | 37 |
|
| 38 | 38 |
#include <lemon/concept_check.h> |
| 39 | 39 |
#include <lemon/concepts/maps.h> |
| 40 | 40 |
|
| 41 | 41 |
namespace lemon {
|
| 42 | 42 |
|
| 43 | 43 |
namespace _reader_bits {
|
| 44 | 44 |
|
| 45 | 45 |
template <typename Value> |
| 46 | 46 |
struct DefaultConverter {
|
| 47 | 47 |
Value operator()(const std::string& str) {
|
| 48 | 48 |
std::istringstream is(str); |
| 49 | 49 |
Value value; |
| 50 | 50 |
if (!(is >> value)) {
|
| 51 | 51 |
throw FormatError("Cannot read token");
|
| 52 | 52 |
} |
| 53 | 53 |
|
| 54 | 54 |
char c; |
| 55 | 55 |
if (is >> std::ws >> c) {
|
| 56 | 56 |
throw FormatError("Remaining characters in token");
|
| 57 | 57 |
} |
| 58 | 58 |
return value; |
| 59 | 59 |
} |
| 60 | 60 |
}; |
| 61 | 61 |
|
| 62 | 62 |
template <> |
| 63 | 63 |
struct DefaultConverter<std::string> {
|
| 64 | 64 |
std::string operator()(const std::string& str) {
|
| 65 | 65 |
return str; |
| 66 | 66 |
} |
| 67 | 67 |
}; |
| 68 | 68 |
|
| 69 | 69 |
template <typename _Item> |
| 70 | 70 |
class MapStorageBase {
|
| 71 | 71 |
public: |
| 72 | 72 |
typedef _Item Item; |
| 73 | 73 |
|
| 74 | 74 |
public: |
| 75 | 75 |
MapStorageBase() {}
|
| 76 | 76 |
virtual ~MapStorageBase() {}
|
| 77 | 77 |
|
| 78 | 78 |
virtual void set(const Item& item, const std::string& value) = 0; |
| 79 | 79 |
|
| 80 | 80 |
}; |
| 81 | 81 |
|
| 82 | 82 |
template <typename _Item, typename _Map, |
| 83 | 83 |
typename _Converter = DefaultConverter<typename _Map::Value> > |
| 84 | 84 |
class MapStorage : public MapStorageBase<_Item> {
|
| 85 | 85 |
public: |
| 86 | 86 |
typedef _Map Map; |
| 87 | 87 |
typedef _Converter Converter; |
| 88 | 88 |
typedef _Item Item; |
| 89 | 89 |
|
| 90 | 90 |
private: |
| 91 | 91 |
Map& _map; |
| 92 | 92 |
Converter _converter; |
| 93 | 93 |
|
| 94 | 94 |
public: |
| 95 | 95 |
MapStorage(Map& map, const Converter& converter = Converter()) |
| 96 | 96 |
: _map(map), _converter(converter) {}
|
| 97 | 97 |
virtual ~MapStorage() {}
|
| 98 | 98 |
|
| 99 | 99 |
virtual void set(const Item& item ,const std::string& value) {
|
| 100 | 100 |
_map.set(item, _converter(value)); |
| 101 | 101 |
} |
| 102 | 102 |
}; |
| 103 | 103 |
|
| 104 |
template <typename |
|
| 104 |
template <typename _GR, bool _dir, typename _Map, |
|
| 105 | 105 |
typename _Converter = DefaultConverter<typename _Map::Value> > |
| 106 |
class GraphArcMapStorage : public MapStorageBase<typename |
|
| 106 |
class GraphArcMapStorage : public MapStorageBase<typename _GR::Edge> {
|
|
| 107 | 107 |
public: |
| 108 | 108 |
typedef _Map Map; |
| 109 | 109 |
typedef _Converter Converter; |
| 110 |
typedef _Graph Graph; |
|
| 111 |
typedef typename Graph::Edge Item; |
|
| 110 |
typedef _GR GR; |
|
| 111 |
typedef typename GR::Edge Item; |
|
| 112 | 112 |
static const bool dir = _dir; |
| 113 | 113 |
|
| 114 | 114 |
private: |
| 115 |
const |
|
| 115 |
const GR& _graph; |
|
| 116 | 116 |
Map& _map; |
| 117 | 117 |
Converter _converter; |
| 118 | 118 |
|
| 119 | 119 |
public: |
| 120 |
GraphArcMapStorage(const |
|
| 120 |
GraphArcMapStorage(const GR& graph, Map& map, |
|
| 121 | 121 |
const Converter& converter = Converter()) |
| 122 | 122 |
: _graph(graph), _map(map), _converter(converter) {}
|
| 123 | 123 |
virtual ~GraphArcMapStorage() {}
|
| 124 | 124 |
|
| 125 | 125 |
virtual void set(const Item& item ,const std::string& value) {
|
| 126 | 126 |
_map.set(_graph.direct(item, dir), _converter(value)); |
| 127 | 127 |
} |
| 128 | 128 |
}; |
| 129 | 129 |
|
| 130 | 130 |
class ValueStorageBase {
|
| 131 | 131 |
public: |
| 132 | 132 |
ValueStorageBase() {}
|
| 133 | 133 |
virtual ~ValueStorageBase() {}
|
| 134 | 134 |
|
| 135 | 135 |
virtual void set(const std::string&) = 0; |
| 136 | 136 |
}; |
| 137 | 137 |
|
| 138 | 138 |
template <typename _Value, typename _Converter = DefaultConverter<_Value> > |
| 139 | 139 |
class ValueStorage : public ValueStorageBase {
|
| 140 | 140 |
public: |
| 141 | 141 |
typedef _Value Value; |
| 142 | 142 |
typedef _Converter Converter; |
| 143 | 143 |
|
| 144 | 144 |
private: |
| 145 | 145 |
Value& _value; |
| 146 | 146 |
Converter _converter; |
| 147 | 147 |
|
| 148 | 148 |
public: |
| 149 | 149 |
ValueStorage(Value& value, const Converter& converter = Converter()) |
| 150 | 150 |
: _value(value), _converter(converter) {}
|
| 151 | 151 |
|
| 152 | 152 |
virtual void set(const std::string& value) {
|
| 153 | 153 |
_value = _converter(value); |
| 154 | 154 |
} |
| 155 | 155 |
}; |
| 156 | 156 |
|
| 157 | 157 |
template <typename Value> |
| 158 | 158 |
struct MapLookUpConverter {
|
| 159 | 159 |
const std::map<std::string, Value>& _map; |
| 160 | 160 |
|
| 161 | 161 |
MapLookUpConverter(const std::map<std::string, Value>& map) |
| 162 | 162 |
: _map(map) {}
|
| 163 | 163 |
|
| 164 | 164 |
Value operator()(const std::string& str) {
|
| 165 | 165 |
typename std::map<std::string, Value>::const_iterator it = |
| 166 | 166 |
_map.find(str); |
| 167 | 167 |
if (it == _map.end()) {
|
| 168 | 168 |
std::ostringstream msg; |
| 169 | 169 |
msg << "Item not found: " << str; |
| 170 | 170 |
throw FormatError(msg.str()); |
| 171 | 171 |
} |
| 172 | 172 |
return it->second; |
| 173 | 173 |
} |
| 174 | 174 |
}; |
| 175 | 175 |
|
| 176 |
template <typename |
|
| 176 |
template <typename GR> |
|
| 177 | 177 |
struct GraphArcLookUpConverter {
|
| 178 |
const Graph& _graph; |
|
| 179 |
const std::map<std::string, typename Graph::Edge>& _map; |
|
| 180 |
|
|
| 181 |
GraphArcLookUpConverter(const Graph& graph, |
|
| 178 |
const GR& _graph; |
|
| 179 |
const std::map<std::string, typename GR::Edge>& _map; |
|
| 180 |
|
|
| 181 |
GraphArcLookUpConverter(const GR& graph, |
|
| 182 | 182 |
const std::map<std::string, |
| 183 |
typename |
|
| 183 |
typename GR::Edge>& map) |
|
| 184 | 184 |
: _graph(graph), _map(map) {}
|
| 185 | 185 |
|
| 186 |
typename |
|
| 186 |
typename GR::Arc operator()(const std::string& str) {
|
|
| 187 | 187 |
if (str.empty() || (str[0] != '+' && str[0] != '-')) {
|
| 188 | 188 |
throw FormatError("Item must start with '+' or '-'");
|
| 189 | 189 |
} |
| 190 |
typename std::map<std::string, typename |
|
| 190 |
typename std::map<std::string, typename GR::Edge> |
|
| 191 | 191 |
::const_iterator it = _map.find(str.substr(1)); |
| 192 | 192 |
if (it == _map.end()) {
|
| 193 | 193 |
throw FormatError("Item not found");
|
| 194 | 194 |
} |
| 195 | 195 |
return _graph.direct(it->second, str[0] == '+'); |
| 196 | 196 |
} |
| 197 | 197 |
}; |
| 198 | 198 |
|
| 199 | 199 |
inline bool isWhiteSpace(char c) {
|
| 200 | 200 |
return c == ' ' || c == '\t' || c == '\v' || |
| 201 | 201 |
c == '\n' || c == '\r' || c == '\f'; |
| 202 | 202 |
} |
| 203 | 203 |
|
| 204 | 204 |
inline bool isOct(char c) {
|
| 205 | 205 |
return '0' <= c && c <='7'; |
| 206 | 206 |
} |
| 207 | 207 |
|
| 208 | 208 |
inline int valueOct(char c) {
|
| 209 | 209 |
LEMON_ASSERT(isOct(c), "The character is not octal."); |
| 210 | 210 |
return c - '0'; |
| 211 | 211 |
} |
| 212 | 212 |
|
| 213 | 213 |
inline bool isHex(char c) {
|
| 214 | 214 |
return ('0' <= c && c <= '9') ||
|
| 215 | 215 |
('a' <= c && c <= 'z') ||
|
| 216 | 216 |
('A' <= c && c <= 'Z');
|
| 217 | 217 |
} |
| 218 | 218 |
|
| 219 | 219 |
inline int valueHex(char c) {
|
| 220 | 220 |
LEMON_ASSERT(isHex(c), "The character is not hexadecimal."); |
| 221 | 221 |
if ('0' <= c && c <= '9') return c - '0';
|
| 222 | 222 |
if ('a' <= c && c <= 'z') return c - 'a' + 10;
|
| 223 | 223 |
return c - 'A' + 10; |
| 224 | 224 |
} |
| 225 | 225 |
|
| 226 | 226 |
inline bool isIdentifierFirstChar(char c) {
|
| 227 | 227 |
return ('a' <= c && c <= 'z') ||
|
| 228 | 228 |
('A' <= c && c <= 'Z') || c == '_';
|
| 229 | 229 |
} |
| 230 | 230 |
|
| 231 | 231 |
inline bool isIdentifierChar(char c) {
|
| 232 | 232 |
return isIdentifierFirstChar(c) || |
| 233 | 233 |
('0' <= c && c <= '9');
|
| 234 | 234 |
} |
| 235 | 235 |
|
| 236 | 236 |
inline char readEscape(std::istream& is) {
|
| 237 | 237 |
char c; |
| 238 | 238 |
if (!is.get(c)) |
| 239 | 239 |
throw FormatError("Escape format error");
|
| 240 | 240 |
|
| 241 | 241 |
switch (c) {
|
| 242 | 242 |
case '\\': |
| 243 | 243 |
return '\\'; |
| 244 | 244 |
case '\"': |
| 245 | 245 |
return '\"'; |
| 246 | 246 |
case '\'': |
| 247 | 247 |
return '\''; |
| 248 | 248 |
case '\?': |
| 249 | 249 |
return '\?'; |
| 250 | 250 |
case 'a': |
| 251 | 251 |
return '\a'; |
| 252 | 252 |
case 'b': |
| 253 | 253 |
return '\b'; |
| 254 | 254 |
case 'f': |
| 255 | 255 |
return '\f'; |
| 256 | 256 |
case 'n': |
| 257 | 257 |
return '\n'; |
| 258 | 258 |
case 'r': |
| 259 | 259 |
return '\r'; |
| 260 | 260 |
case 't': |
| 261 | 261 |
return '\t'; |
| 262 | 262 |
case 'v': |
| 263 | 263 |
return '\v'; |
| 264 | 264 |
case 'x': |
| 265 | 265 |
{
|
| 266 | 266 |
int code; |
| 267 | 267 |
if (!is.get(c) || !isHex(c)) |
| 268 | 268 |
throw FormatError("Escape format error");
|
| 269 | 269 |
else if (code = valueHex(c), !is.get(c) || !isHex(c)) is.putback(c); |
| 270 | 270 |
else code = code * 16 + valueHex(c); |
| 271 | 271 |
return code; |
| 272 | 272 |
} |
| 273 | 273 |
default: |
| 274 | 274 |
{
|
| 275 | 275 |
int code; |
| 276 | 276 |
if (!isOct(c)) |
| 277 | 277 |
throw FormatError("Escape format error");
|
| 278 | 278 |
else if (code = valueOct(c), !is.get(c) || !isOct(c)) |
| 279 | 279 |
is.putback(c); |
| 280 | 280 |
else if (code = code * 8 + valueOct(c), !is.get(c) || !isOct(c)) |
| 281 | 281 |
is.putback(c); |
| 282 | 282 |
else code = code * 8 + valueOct(c); |
| 283 | 283 |
return code; |
| 284 | 284 |
} |
| 285 | 285 |
} |
| 286 | 286 |
} |
| 287 | 287 |
|
| 288 | 288 |
inline std::istream& readToken(std::istream& is, std::string& str) {
|
| 289 | 289 |
std::ostringstream os; |
| 290 | 290 |
|
| 291 | 291 |
char c; |
| 292 | 292 |
is >> std::ws; |
| 293 | 293 |
|
| 294 | 294 |
if (!is.get(c)) |
| 295 | 295 |
return is; |
| 296 | 296 |
|
| 297 | 297 |
if (c == '\"') {
|
| 298 | 298 |
while (is.get(c) && c != '\"') {
|
| 299 | 299 |
if (c == '\\') |
| 300 | 300 |
c = readEscape(is); |
| 301 | 301 |
os << c; |
| 302 | 302 |
} |
| 303 | 303 |
if (!is) |
| 304 | 304 |
throw FormatError("Quoted format error");
|
| 305 | 305 |
} else {
|
| 306 | 306 |
is.putback(c); |
| 307 | 307 |
while (is.get(c) && !isWhiteSpace(c)) {
|
| 308 | 308 |
if (c == '\\') |
| 309 | 309 |
c = readEscape(is); |
| 310 | 310 |
os << c; |
| 311 | 311 |
} |
| 312 | 312 |
if (!is) {
|
| 313 | 313 |
is.clear(); |
| 314 | 314 |
} else {
|
| 315 | 315 |
is.putback(c); |
| 316 | 316 |
} |
| 317 | 317 |
} |
| 318 | 318 |
str = os.str(); |
| 319 | 319 |
return is; |
| 320 | 320 |
} |
| 321 | 321 |
|
| 322 | 322 |
class Section {
|
| 323 | 323 |
public: |
| 324 | 324 |
virtual ~Section() {}
|
| 325 | 325 |
virtual void process(std::istream& is, int& line_num) = 0; |
| 326 | 326 |
}; |
| 327 | 327 |
|
| 328 | 328 |
template <typename Functor> |
| 329 | 329 |
class LineSection : public Section {
|
| 330 | 330 |
private: |
| 331 | 331 |
|
| 332 | 332 |
Functor _functor; |
| 333 | 333 |
|
| 334 | 334 |
public: |
| 335 | 335 |
|
| 336 | 336 |
LineSection(const Functor& functor) : _functor(functor) {}
|
| 337 | 337 |
virtual ~LineSection() {}
|
| 338 | 338 |
|
| 339 | 339 |
virtual void process(std::istream& is, int& line_num) {
|
| 340 | 340 |
char c; |
| 341 | 341 |
std::string line; |
| 342 | 342 |
while (is.get(c) && c != '@') {
|
| 343 | 343 |
if (c == '\n') {
|
| 344 | 344 |
++line_num; |
| 345 | 345 |
} else if (c == '#') {
|
| 346 | 346 |
getline(is, line); |
| 347 | 347 |
++line_num; |
| 348 | 348 |
} else if (!isWhiteSpace(c)) {
|
| 349 | 349 |
is.putback(c); |
| 350 | 350 |
getline(is, line); |
| 351 | 351 |
_functor(line); |
| 352 | 352 |
++line_num; |
| 353 | 353 |
} |
| 354 | 354 |
} |
| 355 | 355 |
if (is) is.putback(c); |
| 356 | 356 |
else if (is.eof()) is.clear(); |
| 357 | 357 |
} |
| 358 | 358 |
}; |
| 359 | 359 |
|
| 360 | 360 |
template <typename Functor> |
| 361 | 361 |
class StreamSection : public Section {
|
| 362 | 362 |
private: |
| 363 | 363 |
|
| 364 | 364 |
Functor _functor; |
| 365 | 365 |
|
| 366 | 366 |
public: |
| 367 | 367 |
|
| 368 | 368 |
StreamSection(const Functor& functor) : _functor(functor) {}
|
| 369 | 369 |
virtual ~StreamSection() {}
|
| 370 | 370 |
|
| 371 | 371 |
virtual void process(std::istream& is, int& line_num) {
|
| 372 | 372 |
_functor(is, line_num); |
| 373 | 373 |
char c; |
| 374 | 374 |
std::string line; |
| 375 | 375 |
while (is.get(c) && c != '@') {
|
| 376 | 376 |
if (c == '\n') {
|
| 377 | 377 |
++line_num; |
| 378 | 378 |
} else if (!isWhiteSpace(c)) {
|
| 379 | 379 |
getline(is, line); |
| 380 | 380 |
++line_num; |
| 381 | 381 |
} |
| 382 | 382 |
} |
| 383 | 383 |
if (is) is.putback(c); |
| 384 | 384 |
else if (is.eof()) is.clear(); |
| 385 | 385 |
} |
| 386 | 386 |
}; |
| 387 | 387 |
|
| 388 | 388 |
} |
| 389 | 389 |
|
| 390 |
template <typename |
|
| 390 |
template <typename DGR> |
|
| 391 | 391 |
class DigraphReader; |
| 392 | 392 |
|
| 393 |
/// \brief Return a \ref DigraphReader class |
|
| 394 |
/// |
|
| 395 |
/// This function just returns a \ref DigraphReader class. |
|
| 396 |
/// \relates DigraphReader |
|
| 397 |
template <typename Digraph> |
|
| 398 |
DigraphReader<Digraph> digraphReader(Digraph& digraph, |
|
| 399 |
std::istream& is = std::cin) {
|
|
| 400 |
DigraphReader<Digraph> tmp(digraph, is); |
|
| 401 |
return tmp; |
|
| 402 |
} |
|
| 403 |
|
|
| 404 |
/// \brief Return a \ref DigraphReader class |
|
| 405 |
/// |
|
| 406 |
/// This function just returns a \ref DigraphReader class. |
|
| 407 |
/// \relates DigraphReader |
|
| 408 |
template <typename Digraph> |
|
| 409 |
DigraphReader<Digraph> digraphReader(Digraph& digraph, |
|
| 410 |
const std::string& fn) {
|
|
| 411 |
DigraphReader<Digraph> tmp(digraph, fn); |
|
| 412 |
return tmp; |
|
| 413 |
} |
|
| 414 |
|
|
| 415 |
/// \brief Return a \ref DigraphReader class |
|
| 416 |
/// |
|
| 417 |
/// This function just returns a \ref DigraphReader class. |
|
| 418 |
/// \relates DigraphReader |
|
| 419 |
template <typename Digraph> |
|
| 420 |
DigraphReader<Digraph> digraphReader(Digraph& digraph, const char* fn) {
|
|
| 421 |
DigraphReader<Digraph> tmp(digraph, fn); |
|
| 422 |
return tmp; |
|
| 423 |
|
|
| 393 |
template <typename TDGR> |
|
| 394 |
DigraphReader<TDGR> digraphReader(TDGR& digraph, std::istream& is = std::cin); |
|
| 395 |
template <typename TDGR> |
|
| 396 |
DigraphReader<TDGR> digraphReader(TDGR& digraph, const std::string& fn); |
|
| 397 |
template <typename TDGR> |
|
| 398 |
DigraphReader<TDGR> digraphReader(TDGR& digraph, const char *fn); |
|
| 424 | 399 |
|
| 425 | 400 |
/// \ingroup lemon_io |
| 426 | 401 |
/// |
| 427 | 402 |
/// \brief \ref lgf-format "LGF" reader for directed graphs |
| 428 | 403 |
/// |
| 429 | 404 |
/// This utility reads an \ref lgf-format "LGF" file. |
| 430 | 405 |
/// |
| 431 | 406 |
/// The reading method does a batch processing. The user creates a |
| 432 | 407 |
/// reader object, then various reading rules can be added to the |
| 433 | 408 |
/// reader, and eventually the reading is executed with the \c run() |
| 434 | 409 |
/// member function. A map reading rule can be added to the reader |
| 435 | 410 |
/// with the \c nodeMap() or \c arcMap() members. An optional |
| 436 | 411 |
/// converter parameter can also be added as a standard functor |
| 437 | 412 |
/// converting from \c std::string to the value type of the map. If it |
| 438 | 413 |
/// is set, it will determine how the tokens in the file should be |
| 439 | 414 |
/// converted to the value type of the map. If the functor is not set, |
| 440 | 415 |
/// then a default conversion will be used. One map can be read into |
| 441 | 416 |
/// multiple map objects at the same time. The \c attribute(), \c |
| 442 | 417 |
/// node() and \c arc() functions are used to add attribute reading |
| 443 | 418 |
/// rules. |
| 444 | 419 |
/// |
| 445 | 420 |
///\code |
| 446 |
/// DigraphReader< |
|
| 421 |
/// DigraphReader<DGR>(digraph, std::cin). |
|
| 447 | 422 |
/// nodeMap("coordinates", coord_map).
|
| 448 | 423 |
/// arcMap("capacity", cap_map).
|
| 449 | 424 |
/// node("source", src).
|
| 450 | 425 |
/// node("target", trg).
|
| 451 | 426 |
/// attribute("caption", caption).
|
| 452 | 427 |
/// run(); |
| 453 | 428 |
///\endcode |
| 454 | 429 |
/// |
| 455 | 430 |
/// By default the reader uses the first section in the file of the |
| 456 | 431 |
/// proper type. If a section has an optional name, then it can be |
| 457 | 432 |
/// selected for reading by giving an optional name parameter to the |
| 458 | 433 |
/// \c nodes(), \c arcs() or \c attributes() functions. |
| 459 | 434 |
/// |
| 460 | 435 |
/// The \c useNodes() and \c useArcs() functions are used to tell the reader |
| 461 | 436 |
/// that the nodes or arcs should not be constructed (added to the |
| 462 | 437 |
/// graph) during the reading, but instead the label map of the items |
| 463 | 438 |
/// are given as a parameter of these functions. An |
| 464 | 439 |
/// application of these functions is multipass reading, which is |
| 465 | 440 |
/// important if two \c \@arcs sections must be read from the |
| 466 | 441 |
/// file. In this case the first phase would read the node set and one |
| 467 | 442 |
/// of the arc sets, while the second phase would read the second arc |
| 468 | 443 |
/// set into an \e ArcSet class (\c SmartArcSet or \c ListArcSet). |
| 469 | 444 |
/// The previously read label node map should be passed to the \c |
| 470 | 445 |
/// useNodes() functions. Another application of multipass reading when |
| 471 | 446 |
/// paths are given as a node map or an arc map. |
| 472 | 447 |
/// It is impossible to read this in |
| 473 | 448 |
/// a single pass, because the arcs are not constructed when the node |
| 474 | 449 |
/// maps are read. |
| 475 |
template <typename |
|
| 450 |
template <typename DGR> |
|
| 476 | 451 |
class DigraphReader {
|
| 477 | 452 |
public: |
| 478 | 453 |
|
| 479 |
typedef _Digraph Digraph; |
|
| 480 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
|
| 454 |
typedef DGR Digraph; |
|
| 481 | 455 |
|
| 482 | 456 |
private: |
| 483 | 457 |
|
| 458 |
TEMPLATE_DIGRAPH_TYPEDEFS(DGR); |
|
| 484 | 459 |
|
| 485 | 460 |
std::istream* _is; |
| 486 | 461 |
bool local_is; |
| 487 | 462 |
std::string _filename; |
| 488 | 463 |
|
| 489 |
|
|
| 464 |
DGR& _digraph; |
|
| 490 | 465 |
|
| 491 | 466 |
std::string _nodes_caption; |
| 492 | 467 |
std::string _arcs_caption; |
| 493 | 468 |
std::string _attributes_caption; |
| 494 | 469 |
|
| 495 | 470 |
typedef std::map<std::string, Node> NodeIndex; |
| 496 | 471 |
NodeIndex _node_index; |
| 497 | 472 |
typedef std::map<std::string, Arc> ArcIndex; |
| 498 | 473 |
ArcIndex _arc_index; |
| 499 | 474 |
|
| 500 | 475 |
typedef std::vector<std::pair<std::string, |
| 501 | 476 |
_reader_bits::MapStorageBase<Node>*> > NodeMaps; |
| 502 | 477 |
NodeMaps _node_maps; |
| 503 | 478 |
|
| 504 | 479 |
typedef std::vector<std::pair<std::string, |
| 505 | 480 |
_reader_bits::MapStorageBase<Arc>*> >ArcMaps; |
| 506 | 481 |
ArcMaps _arc_maps; |
| 507 | 482 |
|
| 508 | 483 |
typedef std::multimap<std::string, _reader_bits::ValueStorageBase*> |
| 509 | 484 |
Attributes; |
| 510 | 485 |
Attributes _attributes; |
| 511 | 486 |
|
| 512 | 487 |
bool _use_nodes; |
| 513 | 488 |
bool _use_arcs; |
| 514 | 489 |
|
| 515 | 490 |
bool _skip_nodes; |
| 516 | 491 |
bool _skip_arcs; |
| 517 | 492 |
|
| 518 | 493 |
int line_num; |
| 519 | 494 |
std::istringstream line; |
| 520 | 495 |
|
| 521 | 496 |
public: |
| 522 | 497 |
|
| 523 | 498 |
/// \brief Constructor |
| 524 | 499 |
/// |
| 525 | 500 |
/// Construct a directed graph reader, which reads from the given |
| 526 | 501 |
/// input stream. |
| 527 |
DigraphReader( |
|
| 502 |
DigraphReader(DGR& digraph, std::istream& is = std::cin) |
|
| 528 | 503 |
: _is(&is), local_is(false), _digraph(digraph), |
| 529 | 504 |
_use_nodes(false), _use_arcs(false), |
| 530 | 505 |
_skip_nodes(false), _skip_arcs(false) {}
|
| 531 | 506 |
|
| 532 | 507 |
/// \brief Constructor |
| 533 | 508 |
/// |
| 534 | 509 |
/// Construct a directed graph reader, which reads from the given |
| 535 | 510 |
/// file. |
| 536 |
DigraphReader( |
|
| 511 |
DigraphReader(DGR& digraph, const std::string& fn) |
|
| 537 | 512 |
: _is(new std::ifstream(fn.c_str())), local_is(true), |
| 538 | 513 |
_filename(fn), _digraph(digraph), |
| 539 | 514 |
_use_nodes(false), _use_arcs(false), |
| 540 | 515 |
_skip_nodes(false), _skip_arcs(false) {
|
| 541 | 516 |
if (!(*_is)) {
|
| 542 | 517 |
delete _is; |
| 543 | 518 |
throw IoError("Cannot open file", fn);
|
| 544 | 519 |
} |
| 545 | 520 |
} |
| 546 | 521 |
|
| 547 | 522 |
/// \brief Constructor |
| 548 | 523 |
/// |
| 549 | 524 |
/// Construct a directed graph reader, which reads from the given |
| 550 | 525 |
/// file. |
| 551 |
DigraphReader( |
|
| 526 |
DigraphReader(DGR& digraph, const char* fn) |
|
| 552 | 527 |
: _is(new std::ifstream(fn)), local_is(true), |
| 553 | 528 |
_filename(fn), _digraph(digraph), |
| 554 | 529 |
_use_nodes(false), _use_arcs(false), |
| 555 | 530 |
_skip_nodes(false), _skip_arcs(false) {
|
| 556 | 531 |
if (!(*_is)) {
|
| 557 | 532 |
delete _is; |
| 558 | 533 |
throw IoError("Cannot open file", fn);
|
| 559 | 534 |
} |
| 560 | 535 |
} |
| 561 | 536 |
|
| 562 | 537 |
/// \brief Destructor |
| 563 | 538 |
~DigraphReader() {
|
| 564 | 539 |
for (typename NodeMaps::iterator it = _node_maps.begin(); |
| 565 | 540 |
it != _node_maps.end(); ++it) {
|
| 566 | 541 |
delete it->second; |
| 567 | 542 |
} |
| 568 | 543 |
|
| 569 | 544 |
for (typename ArcMaps::iterator it = _arc_maps.begin(); |
| 570 | 545 |
it != _arc_maps.end(); ++it) {
|
| 571 | 546 |
delete it->second; |
| 572 | 547 |
} |
| 573 | 548 |
|
| 574 | 549 |
for (typename Attributes::iterator it = _attributes.begin(); |
| 575 | 550 |
it != _attributes.end(); ++it) {
|
| 576 | 551 |
delete it->second; |
| 577 | 552 |
} |
| 578 | 553 |
|
| 579 | 554 |
if (local_is) {
|
| 580 | 555 |
delete _is; |
| 581 | 556 |
} |
| 582 | 557 |
|
| 583 | 558 |
} |
| 584 | 559 |
|
| 585 | 560 |
private: |
| 586 | 561 |
|
| 587 |
friend DigraphReader<Digraph> digraphReader<>(Digraph& digraph, |
|
| 588 |
std::istream& is); |
|
| 589 |
friend DigraphReader<Digraph> digraphReader<>(Digraph& digraph, |
|
| 590 |
const std::string& fn); |
|
| 591 |
friend DigraphReader<Digraph> digraphReader<>(Digraph& digraph, |
|
| 592 |
const char *fn); |
|
| 562 |
template <typename TDGR> |
|
| 563 |
friend DigraphReader<TDGR> digraphReader(TDGR& digraph, std::istream& is); |
|
| 564 |
template <typename TDGR> |
|
| 565 |
friend DigraphReader<TDGR> digraphReader(TDGR& digraph, |
|
| 566 |
const std::string& fn); |
|
| 567 |
template <typename TDGR> |
|
| 568 |
friend DigraphReader<TDGR> digraphReader(TDGR& digraph, const char *fn); |
|
| 593 | 569 |
|
| 594 | 570 |
DigraphReader(DigraphReader& other) |
| 595 | 571 |
: _is(other._is), local_is(other.local_is), _digraph(other._digraph), |
| 596 | 572 |
_use_nodes(other._use_nodes), _use_arcs(other._use_arcs), |
| 597 | 573 |
_skip_nodes(other._skip_nodes), _skip_arcs(other._skip_arcs) {
|
| 598 | 574 |
|
| 599 | 575 |
other._is = 0; |
| 600 | 576 |
other.local_is = false; |
| 601 | 577 |
|
| 602 | 578 |
_node_index.swap(other._node_index); |
| 603 | 579 |
_arc_index.swap(other._arc_index); |
| 604 | 580 |
|
| 605 | 581 |
_node_maps.swap(other._node_maps); |
| 606 | 582 |
_arc_maps.swap(other._arc_maps); |
| 607 | 583 |
_attributes.swap(other._attributes); |
| 608 | 584 |
|
| 609 | 585 |
_nodes_caption = other._nodes_caption; |
| 610 | 586 |
_arcs_caption = other._arcs_caption; |
| 611 | 587 |
_attributes_caption = other._attributes_caption; |
| 612 | 588 |
|
| 613 | 589 |
} |
| 614 | 590 |
|
| 615 | 591 |
DigraphReader& operator=(const DigraphReader&); |
| 616 | 592 |
|
| 617 | 593 |
public: |
| 618 | 594 |
|
| 619 |
/// \name Reading |
|
| 595 |
/// \name Reading Rules |
|
| 620 | 596 |
/// @{
|
| 621 | 597 |
|
| 622 | 598 |
/// \brief Node map reading rule |
| 623 | 599 |
/// |
| 624 | 600 |
/// Add a node map reading rule to the reader. |
| 625 | 601 |
template <typename Map> |
| 626 | 602 |
DigraphReader& nodeMap(const std::string& caption, Map& map) {
|
| 627 | 603 |
checkConcept<concepts::WriteMap<Node, typename Map::Value>, Map>(); |
| 628 | 604 |
_reader_bits::MapStorageBase<Node>* storage = |
| 629 | 605 |
new _reader_bits::MapStorage<Node, Map>(map); |
| 630 | 606 |
_node_maps.push_back(std::make_pair(caption, storage)); |
| 631 | 607 |
return *this; |
| 632 | 608 |
} |
| 633 | 609 |
|
| 634 | 610 |
/// \brief Node map reading rule |
| 635 | 611 |
/// |
| 636 | 612 |
/// Add a node map reading rule with specialized converter to the |
| 637 | 613 |
/// reader. |
| 638 | 614 |
template <typename Map, typename Converter> |
| 639 | 615 |
DigraphReader& nodeMap(const std::string& caption, Map& map, |
| 640 | 616 |
const Converter& converter = Converter()) {
|
| 641 | 617 |
checkConcept<concepts::WriteMap<Node, typename Map::Value>, Map>(); |
| 642 | 618 |
_reader_bits::MapStorageBase<Node>* storage = |
| 643 | 619 |
new _reader_bits::MapStorage<Node, Map, Converter>(map, converter); |
| 644 | 620 |
_node_maps.push_back(std::make_pair(caption, storage)); |
| 645 | 621 |
return *this; |
| 646 | 622 |
} |
| 647 | 623 |
|
| 648 | 624 |
/// \brief Arc map reading rule |
| 649 | 625 |
/// |
| 650 | 626 |
/// Add an arc map reading rule to the reader. |
| 651 | 627 |
template <typename Map> |
| 652 | 628 |
DigraphReader& arcMap(const std::string& caption, Map& map) {
|
| 653 | 629 |
checkConcept<concepts::WriteMap<Arc, typename Map::Value>, Map>(); |
| 654 | 630 |
_reader_bits::MapStorageBase<Arc>* storage = |
| 655 | 631 |
new _reader_bits::MapStorage<Arc, Map>(map); |
| 656 | 632 |
_arc_maps.push_back(std::make_pair(caption, storage)); |
| 657 | 633 |
return *this; |
| 658 | 634 |
} |
| 659 | 635 |
|
| 660 | 636 |
/// \brief Arc map reading rule |
| 661 | 637 |
/// |
| 662 | 638 |
/// Add an arc map reading rule with specialized converter to the |
| 663 | 639 |
/// reader. |
| 664 | 640 |
template <typename Map, typename Converter> |
| 665 | 641 |
DigraphReader& arcMap(const std::string& caption, Map& map, |
| 666 | 642 |
const Converter& converter = Converter()) {
|
| 667 | 643 |
checkConcept<concepts::WriteMap<Arc, typename Map::Value>, Map>(); |
| 668 | 644 |
_reader_bits::MapStorageBase<Arc>* storage = |
| 669 | 645 |
new _reader_bits::MapStorage<Arc, Map, Converter>(map, converter); |
| 670 | 646 |
_arc_maps.push_back(std::make_pair(caption, storage)); |
| 671 | 647 |
return *this; |
| 672 | 648 |
} |
| 673 | 649 |
|
| 674 | 650 |
/// \brief Attribute reading rule |
| 675 | 651 |
/// |
| 676 | 652 |
/// Add an attribute reading rule to the reader. |
| 677 | 653 |
template <typename Value> |
| 678 | 654 |
DigraphReader& attribute(const std::string& caption, Value& value) {
|
| 679 | 655 |
_reader_bits::ValueStorageBase* storage = |
| 680 | 656 |
new _reader_bits::ValueStorage<Value>(value); |
| 681 | 657 |
_attributes.insert(std::make_pair(caption, storage)); |
| 682 | 658 |
return *this; |
| 683 | 659 |
} |
| 684 | 660 |
|
| 685 | 661 |
/// \brief Attribute reading rule |
| 686 | 662 |
/// |
| 687 | 663 |
/// Add an attribute reading rule with specialized converter to the |
| 688 | 664 |
/// reader. |
| 689 | 665 |
template <typename Value, typename Converter> |
| 690 | 666 |
DigraphReader& attribute(const std::string& caption, Value& value, |
| 691 | 667 |
const Converter& converter = Converter()) {
|
| 692 | 668 |
_reader_bits::ValueStorageBase* storage = |
| 693 | 669 |
new _reader_bits::ValueStorage<Value, Converter>(value, converter); |
| 694 | 670 |
_attributes.insert(std::make_pair(caption, storage)); |
| 695 | 671 |
return *this; |
| 696 | 672 |
} |
| 697 | 673 |
|
| 698 | 674 |
/// \brief Node reading rule |
| 699 | 675 |
/// |
| 700 | 676 |
/// Add a node reading rule to reader. |
| 701 | 677 |
DigraphReader& node(const std::string& caption, Node& node) {
|
| 702 | 678 |
typedef _reader_bits::MapLookUpConverter<Node> Converter; |
| 703 | 679 |
Converter converter(_node_index); |
| 704 | 680 |
_reader_bits::ValueStorageBase* storage = |
| 705 | 681 |
new _reader_bits::ValueStorage<Node, Converter>(node, converter); |
| 706 | 682 |
_attributes.insert(std::make_pair(caption, storage)); |
| 707 | 683 |
return *this; |
| 708 | 684 |
} |
| 709 | 685 |
|
| 710 | 686 |
/// \brief Arc reading rule |
| 711 | 687 |
/// |
| 712 | 688 |
/// Add an arc reading rule to reader. |
| 713 | 689 |
DigraphReader& arc(const std::string& caption, Arc& arc) {
|
| 714 | 690 |
typedef _reader_bits::MapLookUpConverter<Arc> Converter; |
| 715 | 691 |
Converter converter(_arc_index); |
| 716 | 692 |
_reader_bits::ValueStorageBase* storage = |
| 717 | 693 |
new _reader_bits::ValueStorage<Arc, Converter>(arc, converter); |
| 718 | 694 |
_attributes.insert(std::make_pair(caption, storage)); |
| 719 | 695 |
return *this; |
| 720 | 696 |
} |
| 721 | 697 |
|
| 722 | 698 |
/// @} |
| 723 | 699 |
|
| 724 |
/// \name Select |
|
| 700 |
/// \name Select Section by Name |
|
| 725 | 701 |
/// @{
|
| 726 | 702 |
|
| 727 | 703 |
/// \brief Set \c \@nodes section to be read |
| 728 | 704 |
/// |
| 729 | 705 |
/// Set \c \@nodes section to be read |
| 730 | 706 |
DigraphReader& nodes(const std::string& caption) {
|
| 731 | 707 |
_nodes_caption = caption; |
| 732 | 708 |
return *this; |
| 733 | 709 |
} |
| 734 | 710 |
|
| 735 | 711 |
/// \brief Set \c \@arcs section to be read |
| 736 | 712 |
/// |
| 737 | 713 |
/// Set \c \@arcs section to be read |
| 738 | 714 |
DigraphReader& arcs(const std::string& caption) {
|
| 739 | 715 |
_arcs_caption = caption; |
| 740 | 716 |
return *this; |
| 741 | 717 |
} |
| 742 | 718 |
|
| 743 | 719 |
/// \brief Set \c \@attributes section to be read |
| 744 | 720 |
/// |
| 745 | 721 |
/// Set \c \@attributes section to be read |
| 746 | 722 |
DigraphReader& attributes(const std::string& caption) {
|
| 747 | 723 |
_attributes_caption = caption; |
| 748 | 724 |
return *this; |
| 749 | 725 |
} |
| 750 | 726 |
|
| 751 | 727 |
/// @} |
| 752 | 728 |
|
| 753 |
/// \name Using |
|
| 729 |
/// \name Using Previously Constructed Node or Arc Set |
|
| 754 | 730 |
/// @{
|
| 755 | 731 |
|
| 756 | 732 |
/// \brief Use previously constructed node set |
| 757 | 733 |
/// |
| 758 | 734 |
/// Use previously constructed node set, and specify the node |
| 759 | 735 |
/// label map. |
| 760 | 736 |
template <typename Map> |
| 761 | 737 |
DigraphReader& useNodes(const Map& map) {
|
| 762 | 738 |
checkConcept<concepts::ReadMap<Node, typename Map::Value>, Map>(); |
| 763 | 739 |
LEMON_ASSERT(!_use_nodes, "Multiple usage of useNodes() member"); |
| 764 | 740 |
_use_nodes = true; |
| 765 | 741 |
_writer_bits::DefaultConverter<typename Map::Value> converter; |
| 766 | 742 |
for (NodeIt n(_digraph); n != INVALID; ++n) {
|
| 767 | 743 |
_node_index.insert(std::make_pair(converter(map[n]), n)); |
| 768 | 744 |
} |
| 769 | 745 |
return *this; |
| 770 | 746 |
} |
| 771 | 747 |
|
| 772 | 748 |
/// \brief Use previously constructed node set |
| 773 | 749 |
/// |
| 774 | 750 |
/// Use previously constructed node set, and specify the node |
| 775 | 751 |
/// label map and a functor which converts the label map values to |
| 776 | 752 |
/// \c std::string. |
| 777 | 753 |
template <typename Map, typename Converter> |
| 778 | 754 |
DigraphReader& useNodes(const Map& map, |
| 779 | 755 |
const Converter& converter = Converter()) {
|
| 780 | 756 |
checkConcept<concepts::ReadMap<Node, typename Map::Value>, Map>(); |
| 781 | 757 |
LEMON_ASSERT(!_use_nodes, "Multiple usage of useNodes() member"); |
| 782 | 758 |
_use_nodes = true; |
| 783 | 759 |
for (NodeIt n(_digraph); n != INVALID; ++n) {
|
| 784 | 760 |
_node_index.insert(std::make_pair(converter(map[n]), n)); |
| 785 | 761 |
} |
| 786 | 762 |
return *this; |
| 787 | 763 |
} |
| 788 | 764 |
|
| 789 | 765 |
/// \brief Use previously constructed arc set |
| 790 | 766 |
/// |
| 791 | 767 |
/// Use previously constructed arc set, and specify the arc |
| 792 | 768 |
/// label map. |
| 793 | 769 |
template <typename Map> |
| 794 | 770 |
DigraphReader& useArcs(const Map& map) {
|
| 795 | 771 |
checkConcept<concepts::ReadMap<Arc, typename Map::Value>, Map>(); |
| 796 | 772 |
LEMON_ASSERT(!_use_arcs, "Multiple usage of useArcs() member"); |
| 797 | 773 |
_use_arcs = true; |
| 798 | 774 |
_writer_bits::DefaultConverter<typename Map::Value> converter; |
| 799 | 775 |
for (ArcIt a(_digraph); a != INVALID; ++a) {
|
| 800 | 776 |
_arc_index.insert(std::make_pair(converter(map[a]), a)); |
| 801 | 777 |
} |
| 802 | 778 |
return *this; |
| 803 | 779 |
} |
| 804 | 780 |
|
| 805 | 781 |
/// \brief Use previously constructed arc set |
| 806 | 782 |
/// |
| 807 | 783 |
/// Use previously constructed arc set, and specify the arc |
| 808 | 784 |
/// label map and a functor which converts the label map values to |
| 809 | 785 |
/// \c std::string. |
| 810 | 786 |
template <typename Map, typename Converter> |
| 811 | 787 |
DigraphReader& useArcs(const Map& map, |
| 812 | 788 |
const Converter& converter = Converter()) {
|
| 813 | 789 |
checkConcept<concepts::ReadMap<Arc, typename Map::Value>, Map>(); |
| 814 | 790 |
LEMON_ASSERT(!_use_arcs, "Multiple usage of useArcs() member"); |
| 815 | 791 |
_use_arcs = true; |
| 816 | 792 |
for (ArcIt a(_digraph); a != INVALID; ++a) {
|
| 817 | 793 |
_arc_index.insert(std::make_pair(converter(map[a]), a)); |
| 818 | 794 |
} |
| 819 | 795 |
return *this; |
| 820 | 796 |
} |
| 821 | 797 |
|
| 822 | 798 |
/// \brief Skips the reading of node section |
| 823 | 799 |
/// |
| 824 | 800 |
/// Omit the reading of the node section. This implies that each node |
| 825 | 801 |
/// map reading rule will be abandoned, and the nodes of the graph |
| 826 | 802 |
/// will not be constructed, which usually cause that the arc set |
| 827 | 803 |
/// could not be read due to lack of node name resolving. |
| 828 | 804 |
/// Therefore \c skipArcs() function should also be used, or |
| 829 | 805 |
/// \c useNodes() should be used to specify the label of the nodes. |
| 830 | 806 |
DigraphReader& skipNodes() {
|
| 831 | 807 |
LEMON_ASSERT(!_skip_nodes, "Skip nodes already set"); |
| 832 | 808 |
_skip_nodes = true; |
| 833 | 809 |
return *this; |
| 834 | 810 |
} |
| 835 | 811 |
|
| 836 | 812 |
/// \brief Skips the reading of arc section |
| 837 | 813 |
/// |
| 838 | 814 |
/// Omit the reading of the arc section. This implies that each arc |
| 839 | 815 |
/// map reading rule will be abandoned, and the arcs of the graph |
| 840 | 816 |
/// will not be constructed. |
| 841 | 817 |
DigraphReader& skipArcs() {
|
| 842 | 818 |
LEMON_ASSERT(!_skip_arcs, "Skip arcs already set"); |
| 843 | 819 |
_skip_arcs = true; |
| 844 | 820 |
return *this; |
| 845 | 821 |
} |
| 846 | 822 |
|
| 847 | 823 |
/// @} |
| 848 | 824 |
|
| 849 | 825 |
private: |
| 850 | 826 |
|
| 851 | 827 |
bool readLine() {
|
| 852 | 828 |
std::string str; |
| 853 | 829 |
while(++line_num, std::getline(*_is, str)) {
|
| 854 | 830 |
line.clear(); line.str(str); |
| 855 | 831 |
char c; |
| 856 | 832 |
if (line >> std::ws >> c && c != '#') {
|
| 857 | 833 |
line.putback(c); |
| 858 | 834 |
return true; |
| 859 | 835 |
} |
| 860 | 836 |
} |
| 861 | 837 |
return false; |
| 862 | 838 |
} |
| 863 | 839 |
|
| 864 | 840 |
bool readSuccess() {
|
| 865 | 841 |
return static_cast<bool>(*_is); |
| 866 | 842 |
} |
| 867 | 843 |
|
| 868 | 844 |
void skipSection() {
|
| 869 | 845 |
char c; |
| 870 | 846 |
while (readSuccess() && line >> c && c != '@') {
|
| 871 | 847 |
readLine(); |
| 872 | 848 |
} |
| 873 | 849 |
if (readSuccess()) {
|
| 874 | 850 |
line.putback(c); |
| 875 | 851 |
} |
| 876 | 852 |
} |
| 877 | 853 |
|
| 878 | 854 |
void readNodes() {
|
| 879 | 855 |
|
| 880 | 856 |
std::vector<int> map_index(_node_maps.size()); |
| 881 | 857 |
int map_num, label_index; |
| 882 | 858 |
|
| 883 | 859 |
char c; |
| 884 | 860 |
if (!readLine() || !(line >> c) || c == '@') {
|
| 885 | 861 |
if (readSuccess() && line) line.putback(c); |
| 886 | 862 |
if (!_node_maps.empty()) |
| 887 | 863 |
throw FormatError("Cannot find map names");
|
| 888 | 864 |
return; |
| 889 | 865 |
} |
| 890 | 866 |
line.putback(c); |
| 891 | 867 |
|
| 892 | 868 |
{
|
| 893 | 869 |
std::map<std::string, int> maps; |
| 894 | 870 |
|
| 895 | 871 |
std::string map; |
| 896 | 872 |
int index = 0; |
| 897 | 873 |
while (_reader_bits::readToken(line, map)) {
|
| 898 | 874 |
if (maps.find(map) != maps.end()) {
|
| 899 | 875 |
std::ostringstream msg; |
| 900 | 876 |
msg << "Multiple occurence of node map: " << map; |
| 901 | 877 |
throw FormatError(msg.str()); |
| 902 | 878 |
} |
| 903 | 879 |
maps.insert(std::make_pair(map, index)); |
| 904 | 880 |
++index; |
| 905 | 881 |
} |
| 906 | 882 |
|
| 907 | 883 |
for (int i = 0; i < static_cast<int>(_node_maps.size()); ++i) {
|
| 908 | 884 |
std::map<std::string, int>::iterator jt = |
| 909 | 885 |
maps.find(_node_maps[i].first); |
| 910 | 886 |
if (jt == maps.end()) {
|
| 911 | 887 |
std::ostringstream msg; |
| 912 | 888 |
msg << "Map not found: " << _node_maps[i].first; |
| 913 | 889 |
throw FormatError(msg.str()); |
| 914 | 890 |
} |
| 915 | 891 |
map_index[i] = jt->second; |
| 916 | 892 |
} |
| 917 | 893 |
|
| 918 | 894 |
{
|
| 919 | 895 |
std::map<std::string, int>::iterator jt = maps.find("label");
|
| 920 | 896 |
if (jt != maps.end()) {
|
| 921 | 897 |
label_index = jt->second; |
| 922 | 898 |
} else {
|
| 923 | 899 |
label_index = -1; |
| 924 | 900 |
} |
| 925 | 901 |
} |
| 926 | 902 |
map_num = maps.size(); |
| 927 | 903 |
} |
| 928 | 904 |
|
| 929 | 905 |
while (readLine() && line >> c && c != '@') {
|
| 930 | 906 |
line.putback(c); |
| 931 | 907 |
|
| 932 | 908 |
std::vector<std::string> tokens(map_num); |
| 933 | 909 |
for (int i = 0; i < map_num; ++i) {
|
| 934 | 910 |
if (!_reader_bits::readToken(line, tokens[i])) {
|
| 935 | 911 |
std::ostringstream msg; |
| 936 | 912 |
msg << "Column not found (" << i + 1 << ")";
|
| 937 | 913 |
throw FormatError(msg.str()); |
| 938 | 914 |
} |
| 939 | 915 |
} |
| 940 | 916 |
if (line >> std::ws >> c) |
| 941 | 917 |
throw FormatError("Extra character at the end of line");
|
| 942 | 918 |
|
| 943 | 919 |
Node n; |
| 944 | 920 |
if (!_use_nodes) {
|
| 945 | 921 |
n = _digraph.addNode(); |
| 946 | 922 |
if (label_index != -1) |
| 947 | 923 |
_node_index.insert(std::make_pair(tokens[label_index], n)); |
| 948 | 924 |
} else {
|
| 949 | 925 |
if (label_index == -1) |
| 950 | 926 |
throw FormatError("Label map not found");
|
| 951 | 927 |
typename std::map<std::string, Node>::iterator it = |
| 952 | 928 |
_node_index.find(tokens[label_index]); |
| 953 | 929 |
if (it == _node_index.end()) {
|
| 954 | 930 |
std::ostringstream msg; |
| 955 | 931 |
msg << "Node with label not found: " << tokens[label_index]; |
| 956 | 932 |
throw FormatError(msg.str()); |
| 957 | 933 |
} |
| 958 | 934 |
n = it->second; |
| 959 | 935 |
} |
| 960 | 936 |
|
| 961 | 937 |
for (int i = 0; i < static_cast<int>(_node_maps.size()); ++i) {
|
| 962 | 938 |
_node_maps[i].second->set(n, tokens[map_index[i]]); |
| 963 | 939 |
} |
| 964 | 940 |
|
| 965 | 941 |
} |
| 966 | 942 |
if (readSuccess()) {
|
| 967 | 943 |
line.putback(c); |
| 968 | 944 |
} |
| 969 | 945 |
} |
| 970 | 946 |
|
| 971 | 947 |
void readArcs() {
|
| 972 | 948 |
|
| 973 | 949 |
std::vector<int> map_index(_arc_maps.size()); |
| 974 | 950 |
int map_num, label_index; |
| 975 | 951 |
|
| 976 | 952 |
char c; |
| 977 | 953 |
if (!readLine() || !(line >> c) || c == '@') {
|
| 978 | 954 |
if (readSuccess() && line) line.putback(c); |
| 979 | 955 |
if (!_arc_maps.empty()) |
| 980 | 956 |
throw FormatError("Cannot find map names");
|
| 981 | 957 |
return; |
| 982 | 958 |
} |
| 983 | 959 |
line.putback(c); |
| 984 | 960 |
|
| 985 | 961 |
{
|
| 986 | 962 |
std::map<std::string, int> maps; |
| 987 | 963 |
|
| 988 | 964 |
std::string map; |
| 989 | 965 |
int index = 0; |
| 990 | 966 |
while (_reader_bits::readToken(line, map)) {
|
| 991 | 967 |
if (maps.find(map) != maps.end()) {
|
| 992 | 968 |
std::ostringstream msg; |
| 993 | 969 |
msg << "Multiple occurence of arc map: " << map; |
| 994 | 970 |
throw FormatError(msg.str()); |
| 995 | 971 |
} |
| 996 | 972 |
maps.insert(std::make_pair(map, index)); |
| 997 | 973 |
++index; |
| 998 | 974 |
} |
| 999 | 975 |
|
| 1000 | 976 |
for (int i = 0; i < static_cast<int>(_arc_maps.size()); ++i) {
|
| 1001 | 977 |
std::map<std::string, int>::iterator jt = |
| 1002 | 978 |
maps.find(_arc_maps[i].first); |
| 1003 | 979 |
if (jt == maps.end()) {
|
| 1004 | 980 |
std::ostringstream msg; |
| 1005 | 981 |
msg << "Map not found: " << _arc_maps[i].first; |
| 1006 | 982 |
throw FormatError(msg.str()); |
| 1007 | 983 |
} |
| 1008 | 984 |
map_index[i] = jt->second; |
| 1009 | 985 |
} |
| 1010 | 986 |
|
| 1011 | 987 |
{
|
| 1012 | 988 |
std::map<std::string, int>::iterator jt = maps.find("label");
|
| 1013 | 989 |
if (jt != maps.end()) {
|
| 1014 | 990 |
label_index = jt->second; |
| 1015 | 991 |
} else {
|
| 1016 | 992 |
label_index = -1; |
| 1017 | 993 |
} |
| 1018 | 994 |
} |
| 1019 | 995 |
map_num = maps.size(); |
| 1020 | 996 |
} |
| 1021 | 997 |
|
| 1022 | 998 |
while (readLine() && line >> c && c != '@') {
|
| 1023 | 999 |
line.putback(c); |
| 1024 | 1000 |
|
| 1025 | 1001 |
std::string source_token; |
| 1026 | 1002 |
std::string target_token; |
| 1027 | 1003 |
|
| 1028 | 1004 |
if (!_reader_bits::readToken(line, source_token)) |
| 1029 | 1005 |
throw FormatError("Source not found");
|
| 1030 | 1006 |
|
| 1031 | 1007 |
if (!_reader_bits::readToken(line, target_token)) |
| 1032 | 1008 |
throw FormatError("Target not found");
|
| 1033 | 1009 |
|
| 1034 | 1010 |
std::vector<std::string> tokens(map_num); |
| 1035 | 1011 |
for (int i = 0; i < map_num; ++i) {
|
| 1036 | 1012 |
if (!_reader_bits::readToken(line, tokens[i])) {
|
| 1037 | 1013 |
std::ostringstream msg; |
| 1038 | 1014 |
msg << "Column not found (" << i + 1 << ")";
|
| 1039 | 1015 |
throw FormatError(msg.str()); |
| 1040 | 1016 |
} |
| 1041 | 1017 |
} |
| 1042 | 1018 |
if (line >> std::ws >> c) |
| 1043 | 1019 |
throw FormatError("Extra character at the end of line");
|
| 1044 | 1020 |
|
| 1045 | 1021 |
Arc a; |
| 1046 | 1022 |
if (!_use_arcs) {
|
| 1047 | 1023 |
|
| 1048 | 1024 |
typename NodeIndex::iterator it; |
| 1049 | 1025 |
|
| 1050 | 1026 |
it = _node_index.find(source_token); |
| 1051 | 1027 |
if (it == _node_index.end()) {
|
| 1052 | 1028 |
std::ostringstream msg; |
| 1053 | 1029 |
msg << "Item not found: " << source_token; |
| 1054 | 1030 |
throw FormatError(msg.str()); |
| 1055 | 1031 |
} |
| 1056 | 1032 |
Node source = it->second; |
| 1057 | 1033 |
|
| 1058 | 1034 |
it = _node_index.find(target_token); |
| 1059 | 1035 |
if (it == _node_index.end()) {
|
| 1060 | 1036 |
std::ostringstream msg; |
| 1061 | 1037 |
msg << "Item not found: " << target_token; |
| 1062 | 1038 |
throw FormatError(msg.str()); |
| 1063 | 1039 |
} |
| 1064 | 1040 |
Node target = it->second; |
| 1065 | 1041 |
|
| 1066 | 1042 |
a = _digraph.addArc(source, target); |
| 1067 | 1043 |
if (label_index != -1) |
| 1068 | 1044 |
_arc_index.insert(std::make_pair(tokens[label_index], a)); |
| 1069 | 1045 |
} else {
|
| 1070 | 1046 |
if (label_index == -1) |
| 1071 | 1047 |
throw FormatError("Label map not found");
|
| 1072 | 1048 |
typename std::map<std::string, Arc>::iterator it = |
| 1073 | 1049 |
_arc_index.find(tokens[label_index]); |
| 1074 | 1050 |
if (it == _arc_index.end()) {
|
| 1075 | 1051 |
std::ostringstream msg; |
| 1076 | 1052 |
msg << "Arc with label not found: " << tokens[label_index]; |
| 1077 | 1053 |
throw FormatError(msg.str()); |
| 1078 | 1054 |
} |
| 1079 | 1055 |
a = it->second; |
| 1080 | 1056 |
} |
| 1081 | 1057 |
|
| 1082 | 1058 |
for (int i = 0; i < static_cast<int>(_arc_maps.size()); ++i) {
|
| 1083 | 1059 |
_arc_maps[i].second->set(a, tokens[map_index[i]]); |
| 1084 | 1060 |
} |
| 1085 | 1061 |
|
| 1086 | 1062 |
} |
| 1087 | 1063 |
if (readSuccess()) {
|
| 1088 | 1064 |
line.putback(c); |
| 1089 | 1065 |
} |
| 1090 | 1066 |
} |
| 1091 | 1067 |
|
| 1092 | 1068 |
void readAttributes() {
|
| 1093 | 1069 |
|
| 1094 | 1070 |
std::set<std::string> read_attr; |
| 1095 | 1071 |
|
| 1096 | 1072 |
char c; |
| 1097 | 1073 |
while (readLine() && line >> c && c != '@') {
|
| 1098 | 1074 |
line.putback(c); |
| 1099 | 1075 |
|
| 1100 | 1076 |
std::string attr, token; |
| 1101 | 1077 |
if (!_reader_bits::readToken(line, attr)) |
| 1102 | 1078 |
throw FormatError("Attribute name not found");
|
| 1103 | 1079 |
if (!_reader_bits::readToken(line, token)) |
| 1104 | 1080 |
throw FormatError("Attribute value not found");
|
| 1105 | 1081 |
if (line >> c) |
| 1106 | 1082 |
throw FormatError("Extra character at the end of line");
|
| 1107 | 1083 |
|
| 1108 | 1084 |
{
|
| 1109 | 1085 |
std::set<std::string>::iterator it = read_attr.find(attr); |
| 1110 | 1086 |
if (it != read_attr.end()) {
|
| 1111 | 1087 |
std::ostringstream msg; |
| 1112 | 1088 |
msg << "Multiple occurence of attribute: " << attr; |
| 1113 | 1089 |
throw FormatError(msg.str()); |
| 1114 | 1090 |
} |
| 1115 | 1091 |
read_attr.insert(attr); |
| 1116 | 1092 |
} |
| 1117 | 1093 |
|
| 1118 | 1094 |
{
|
| 1119 | 1095 |
typename Attributes::iterator it = _attributes.lower_bound(attr); |
| 1120 | 1096 |
while (it != _attributes.end() && it->first == attr) {
|
| 1121 | 1097 |
it->second->set(token); |
| 1122 | 1098 |
++it; |
| 1123 | 1099 |
} |
| 1124 | 1100 |
} |
| 1125 | 1101 |
|
| 1126 | 1102 |
} |
| 1127 | 1103 |
if (readSuccess()) {
|
| 1128 | 1104 |
line.putback(c); |
| 1129 | 1105 |
} |
| 1130 | 1106 |
for (typename Attributes::iterator it = _attributes.begin(); |
| 1131 | 1107 |
it != _attributes.end(); ++it) {
|
| 1132 | 1108 |
if (read_attr.find(it->first) == read_attr.end()) {
|
| 1133 | 1109 |
std::ostringstream msg; |
| 1134 | 1110 |
msg << "Attribute not found: " << it->first; |
| 1135 | 1111 |
throw FormatError(msg.str()); |
| 1136 | 1112 |
} |
| 1137 | 1113 |
} |
| 1138 | 1114 |
} |
| 1139 | 1115 |
|
| 1140 | 1116 |
public: |
| 1141 | 1117 |
|
| 1142 |
/// \name Execution of the |
|
| 1118 |
/// \name Execution of the Reader |
|
| 1143 | 1119 |
/// @{
|
| 1144 | 1120 |
|
| 1145 | 1121 |
/// \brief Start the batch processing |
| 1146 | 1122 |
/// |
| 1147 | 1123 |
/// This function starts the batch processing |
| 1148 | 1124 |
void run() {
|
| 1149 | 1125 |
LEMON_ASSERT(_is != 0, "This reader assigned to an other reader"); |
| 1150 | 1126 |
|
| 1151 | 1127 |
bool nodes_done = _skip_nodes; |
| 1152 | 1128 |
bool arcs_done = _skip_arcs; |
| 1153 | 1129 |
bool attributes_done = false; |
| 1154 | 1130 |
|
| 1155 | 1131 |
line_num = 0; |
| 1156 | 1132 |
readLine(); |
| 1157 | 1133 |
skipSection(); |
| 1158 | 1134 |
|
| 1159 | 1135 |
while (readSuccess()) {
|
| 1160 | 1136 |
try {
|
| 1161 | 1137 |
char c; |
| 1162 | 1138 |
std::string section, caption; |
| 1163 | 1139 |
line >> c; |
| 1164 | 1140 |
_reader_bits::readToken(line, section); |
| 1165 | 1141 |
_reader_bits::readToken(line, caption); |
| 1166 | 1142 |
|
| 1167 | 1143 |
if (line >> c) |
| 1168 | 1144 |
throw FormatError("Extra character at the end of line");
|
| 1169 | 1145 |
|
| 1170 | 1146 |
if (section == "nodes" && !nodes_done) {
|
| 1171 | 1147 |
if (_nodes_caption.empty() || _nodes_caption == caption) {
|
| 1172 | 1148 |
readNodes(); |
| 1173 | 1149 |
nodes_done = true; |
| 1174 | 1150 |
} |
| 1175 | 1151 |
} else if ((section == "arcs" || section == "edges") && |
| 1176 | 1152 |
!arcs_done) {
|
| 1177 | 1153 |
if (_arcs_caption.empty() || _arcs_caption == caption) {
|
| 1178 | 1154 |
readArcs(); |
| 1179 | 1155 |
arcs_done = true; |
| 1180 | 1156 |
} |
| 1181 | 1157 |
} else if (section == "attributes" && !attributes_done) {
|
| 1182 | 1158 |
if (_attributes_caption.empty() || _attributes_caption == caption) {
|
| 1183 | 1159 |
readAttributes(); |
| 1184 | 1160 |
attributes_done = true; |
| 1185 | 1161 |
} |
| 1186 | 1162 |
} else {
|
| 1187 | 1163 |
readLine(); |
| 1188 | 1164 |
skipSection(); |
| 1189 | 1165 |
} |
| 1190 | 1166 |
} catch (FormatError& error) {
|
| 1191 | 1167 |
error.line(line_num); |
| 1192 | 1168 |
error.file(_filename); |
| 1193 | 1169 |
throw; |
| 1194 | 1170 |
} |
| 1195 | 1171 |
} |
| 1196 | 1172 |
|
| 1197 | 1173 |
if (!nodes_done) {
|
| 1198 | 1174 |
throw FormatError("Section @nodes not found");
|
| 1199 | 1175 |
} |
| 1200 | 1176 |
|
| 1201 | 1177 |
if (!arcs_done) {
|
| 1202 | 1178 |
throw FormatError("Section @arcs not found");
|
| 1203 | 1179 |
} |
| 1204 | 1180 |
|
| 1205 | 1181 |
if (!attributes_done && !_attributes.empty()) {
|
| 1206 | 1182 |
throw FormatError("Section @attributes not found");
|
| 1207 | 1183 |
} |
| 1208 | 1184 |
|
| 1209 | 1185 |
} |
| 1210 | 1186 |
|
| 1211 | 1187 |
/// @} |
| 1212 | 1188 |
|
| 1213 | 1189 |
}; |
| 1214 |
|
|
| 1215 |
template <typename Graph> |
|
| 1216 |
class GraphReader; |
|
| 1217 |
|
|
| 1218 |
|
|
| 1190 |
|
|
| 1191 |
/// \ingroup lemon_io |
|
| 1219 | 1192 |
/// |
| 1220 |
/// This function just returns a \ref GraphReader class. |
|
| 1221 |
/// \relates GraphReader |
|
| 1222 |
template <typename Graph> |
|
| 1223 |
GraphReader<Graph> graphReader(Graph& graph, std::istream& is = std::cin) {
|
|
| 1224 |
|
|
| 1193 |
/// \brief Return a \ref DigraphReader class |
|
| 1194 |
/// |
|
| 1195 |
/// This function just returns a \ref DigraphReader class. |
|
| 1196 |
/// |
|
| 1197 |
/// With this function a digraph can be read from an |
|
| 1198 |
/// \ref lgf-format "LGF" file or input stream with several maps and |
|
| 1199 |
/// attributes. For example, there is network flow problem on a |
|
| 1200 |
/// digraph, i.e. a digraph with a \e capacity map on the arcs and |
|
| 1201 |
/// \e source and \e target nodes. This digraph can be read with the |
|
| 1202 |
/// following code: |
|
| 1203 |
/// |
|
| 1204 |
///\code |
|
| 1205 |
///ListDigraph digraph; |
|
| 1206 |
///ListDigraph::ArcMap<int> cm(digraph); |
|
| 1207 |
///ListDigraph::Node src, trg; |
|
| 1208 |
///digraphReader(digraph, std::cin). |
|
| 1209 |
/// arcMap("capacity", cap).
|
|
| 1210 |
/// node("source", src).
|
|
| 1211 |
/// node("target", trg).
|
|
| 1212 |
/// run(); |
|
| 1213 |
///\endcode |
|
| 1214 |
/// |
|
| 1215 |
/// For a complete documentation, please see the \ref DigraphReader |
|
| 1216 |
/// class documentation. |
|
| 1217 |
/// \warning Don't forget to put the \ref DigraphReader::run() "run()" |
|
| 1218 |
/// to the end of the parameter list. |
|
| 1219 |
/// \relates DigraphReader |
|
| 1220 |
/// \sa digraphReader(TDGR& digraph, const std::string& fn) |
|
| 1221 |
/// \sa digraphReader(TDGR& digraph, const char* fn) |
|
| 1222 |
template <typename TDGR> |
|
| 1223 |
DigraphReader<TDGR> digraphReader(TDGR& digraph, std::istream& is) {
|
|
| 1224 |
DigraphReader<TDGR> tmp(digraph, is); |
|
| 1225 | 1225 |
return tmp; |
| 1226 | 1226 |
} |
| 1227 | 1227 |
|
| 1228 |
/// \brief Return a \ref |
|
| 1228 |
/// \brief Return a \ref DigraphReader class |
|
| 1229 | 1229 |
/// |
| 1230 |
/// This function just returns a \ref GraphReader class. |
|
| 1231 |
/// \relates GraphReader |
|
| 1232 |
template <typename Graph> |
|
| 1233 |
GraphReader<Graph> graphReader(Graph& graph, const std::string& fn) {
|
|
| 1234 |
|
|
| 1230 |
/// This function just returns a \ref DigraphReader class. |
|
| 1231 |
/// \relates DigraphReader |
|
| 1232 |
/// \sa digraphReader(TDGR& digraph, std::istream& is) |
|
| 1233 |
template <typename TDGR> |
|
| 1234 |
DigraphReader<TDGR> digraphReader(TDGR& digraph, const std::string& fn) {
|
|
| 1235 |
DigraphReader<TDGR> tmp(digraph, fn); |
|
| 1235 | 1236 |
return tmp; |
| 1236 | 1237 |
} |
| 1237 | 1238 |
|
| 1238 |
/// \brief Return a \ref |
|
| 1239 |
/// \brief Return a \ref DigraphReader class |
|
| 1239 | 1240 |
/// |
| 1240 |
/// This function just returns a \ref GraphReader class. |
|
| 1241 |
/// \relates GraphReader |
|
| 1242 |
template <typename Graph> |
|
| 1243 |
GraphReader<Graph> graphReader(Graph& graph, const char* fn) {
|
|
| 1244 |
|
|
| 1241 |
/// This function just returns a \ref DigraphReader class. |
|
| 1242 |
/// \relates DigraphReader |
|
| 1243 |
/// \sa digraphReader(TDGR& digraph, std::istream& is) |
|
| 1244 |
template <typename TDGR> |
|
| 1245 |
DigraphReader<TDGR> digraphReader(TDGR& digraph, const char* fn) {
|
|
| 1246 |
DigraphReader<TDGR> tmp(digraph, fn); |
|
| 1245 | 1247 |
return tmp; |
| 1246 | 1248 |
} |
| 1247 | 1249 |
|
| 1250 |
template <typename GR> |
|
| 1251 |
class GraphReader; |
|
| 1252 |
|
|
| 1253 |
template <typename TGR> |
|
| 1254 |
GraphReader<TGR> graphReader(TGR& graph, std::istream& is = std::cin); |
|
| 1255 |
template <typename TGR> |
|
| 1256 |
GraphReader<TGR> graphReader(TGR& graph, const std::string& fn); |
|
| 1257 |
template <typename TGR> |
|
| 1258 |
GraphReader<TGR> graphReader(TGR& graph, const char *fn); |
|
| 1259 |
|
|
| 1248 | 1260 |
/// \ingroup lemon_io |
| 1249 | 1261 |
/// |
| 1250 | 1262 |
/// \brief \ref lgf-format "LGF" reader for undirected graphs |
| 1251 | 1263 |
/// |
| 1252 | 1264 |
/// This utility reads an \ref lgf-format "LGF" file. |
| 1253 | 1265 |
/// |
| 1254 | 1266 |
/// It can be used almost the same way as \c DigraphReader. |
| 1255 | 1267 |
/// The only difference is that this class can handle edges and |
| 1256 | 1268 |
/// edge maps as well as arcs and arc maps. |
| 1257 | 1269 |
/// |
| 1258 | 1270 |
/// The columns in the \c \@edges (or \c \@arcs) section are the |
| 1259 | 1271 |
/// edge maps. However, if there are two maps with the same name |
| 1260 | 1272 |
/// prefixed with \c '+' and \c '-', then these can be read into an |
| 1261 | 1273 |
/// arc map. Similarly, an attribute can be read into an arc, if |
| 1262 | 1274 |
/// it's value is an edge label prefixed with \c '+' or \c '-'. |
| 1263 |
template <typename |
|
| 1275 |
template <typename GR> |
|
| 1264 | 1276 |
class GraphReader {
|
| 1265 | 1277 |
public: |
| 1266 | 1278 |
|
| 1267 |
typedef _Graph Graph; |
|
| 1268 |
TEMPLATE_GRAPH_TYPEDEFS(Graph); |
|
| 1279 |
typedef GR Graph; |
|
| 1269 | 1280 |
|
| 1270 | 1281 |
private: |
| 1271 | 1282 |
|
| 1283 |
TEMPLATE_GRAPH_TYPEDEFS(GR); |
|
| 1284 |
|
|
| 1272 | 1285 |
std::istream* _is; |
| 1273 | 1286 |
bool local_is; |
| 1274 | 1287 |
std::string _filename; |
| 1275 | 1288 |
|
| 1276 |
|
|
| 1289 |
GR& _graph; |
|
| 1277 | 1290 |
|
| 1278 | 1291 |
std::string _nodes_caption; |
| 1279 | 1292 |
std::string _edges_caption; |
| 1280 | 1293 |
std::string _attributes_caption; |
| 1281 | 1294 |
|
| 1282 | 1295 |
typedef std::map<std::string, Node> NodeIndex; |
| 1283 | 1296 |
NodeIndex _node_index; |
| 1284 | 1297 |
typedef std::map<std::string, Edge> EdgeIndex; |
| 1285 | 1298 |
EdgeIndex _edge_index; |
| 1286 | 1299 |
|
| 1287 | 1300 |
typedef std::vector<std::pair<std::string, |
| 1288 | 1301 |
_reader_bits::MapStorageBase<Node>*> > NodeMaps; |
| 1289 | 1302 |
NodeMaps _node_maps; |
| 1290 | 1303 |
|
| 1291 | 1304 |
typedef std::vector<std::pair<std::string, |
| 1292 | 1305 |
_reader_bits::MapStorageBase<Edge>*> > EdgeMaps; |
| 1293 | 1306 |
EdgeMaps _edge_maps; |
| 1294 | 1307 |
|
| 1295 | 1308 |
typedef std::multimap<std::string, _reader_bits::ValueStorageBase*> |
| 1296 | 1309 |
Attributes; |
| 1297 | 1310 |
Attributes _attributes; |
| 1298 | 1311 |
|
| 1299 | 1312 |
bool _use_nodes; |
| 1300 | 1313 |
bool _use_edges; |
| 1301 | 1314 |
|
| 1302 | 1315 |
bool _skip_nodes; |
| 1303 | 1316 |
bool _skip_edges; |
| 1304 | 1317 |
|
| 1305 | 1318 |
int line_num; |
| 1306 | 1319 |
std::istringstream line; |
| 1307 | 1320 |
|
| 1308 | 1321 |
public: |
| 1309 | 1322 |
|
| 1310 | 1323 |
/// \brief Constructor |
| 1311 | 1324 |
/// |
| 1312 | 1325 |
/// Construct an undirected graph reader, which reads from the given |
| 1313 | 1326 |
/// input stream. |
| 1314 |
GraphReader( |
|
| 1327 |
GraphReader(GR& graph, std::istream& is = std::cin) |
|
| 1315 | 1328 |
: _is(&is), local_is(false), _graph(graph), |
| 1316 | 1329 |
_use_nodes(false), _use_edges(false), |
| 1317 | 1330 |
_skip_nodes(false), _skip_edges(false) {}
|
| 1318 | 1331 |
|
| 1319 | 1332 |
/// \brief Constructor |
| 1320 | 1333 |
/// |
| 1321 | 1334 |
/// Construct an undirected graph reader, which reads from the given |
| 1322 | 1335 |
/// file. |
| 1323 |
GraphReader( |
|
| 1336 |
GraphReader(GR& graph, const std::string& fn) |
|
| 1324 | 1337 |
: _is(new std::ifstream(fn.c_str())), local_is(true), |
| 1325 | 1338 |
_filename(fn), _graph(graph), |
| 1326 | 1339 |
_use_nodes(false), _use_edges(false), |
| 1327 | 1340 |
_skip_nodes(false), _skip_edges(false) {
|
| 1328 | 1341 |
if (!(*_is)) {
|
| 1329 | 1342 |
delete _is; |
| 1330 | 1343 |
throw IoError("Cannot open file", fn);
|
| 1331 | 1344 |
} |
| 1332 | 1345 |
} |
| 1333 | 1346 |
|
| 1334 | 1347 |
/// \brief Constructor |
| 1335 | 1348 |
/// |
| 1336 | 1349 |
/// Construct an undirected graph reader, which reads from the given |
| 1337 | 1350 |
/// file. |
| 1338 |
GraphReader( |
|
| 1351 |
GraphReader(GR& graph, const char* fn) |
|
| 1339 | 1352 |
: _is(new std::ifstream(fn)), local_is(true), |
| 1340 | 1353 |
_filename(fn), _graph(graph), |
| 1341 | 1354 |
_use_nodes(false), _use_edges(false), |
| 1342 | 1355 |
_skip_nodes(false), _skip_edges(false) {
|
| 1343 | 1356 |
if (!(*_is)) {
|
| 1344 | 1357 |
delete _is; |
| 1345 | 1358 |
throw IoError("Cannot open file", fn);
|
| 1346 | 1359 |
} |
| 1347 | 1360 |
} |
| 1348 | 1361 |
|
| 1349 | 1362 |
/// \brief Destructor |
| 1350 | 1363 |
~GraphReader() {
|
| 1351 | 1364 |
for (typename NodeMaps::iterator it = _node_maps.begin(); |
| 1352 | 1365 |
it != _node_maps.end(); ++it) {
|
| 1353 | 1366 |
delete it->second; |
| 1354 | 1367 |
} |
| 1355 | 1368 |
|
| 1356 | 1369 |
for (typename EdgeMaps::iterator it = _edge_maps.begin(); |
| 1357 | 1370 |
it != _edge_maps.end(); ++it) {
|
| 1358 | 1371 |
delete it->second; |
| 1359 | 1372 |
} |
| 1360 | 1373 |
|
| 1361 | 1374 |
for (typename Attributes::iterator it = _attributes.begin(); |
| 1362 | 1375 |
it != _attributes.end(); ++it) {
|
| 1363 | 1376 |
delete it->second; |
| 1364 | 1377 |
} |
| 1365 | 1378 |
|
| 1366 | 1379 |
if (local_is) {
|
| 1367 | 1380 |
delete _is; |
| 1368 | 1381 |
} |
| 1369 | 1382 |
|
| 1370 | 1383 |
} |
| 1371 | 1384 |
|
| 1372 | 1385 |
private: |
| 1373 |
friend GraphReader<Graph> graphReader<>(Graph& graph, std::istream& is); |
|
| 1374 |
friend GraphReader<Graph> graphReader<>(Graph& graph, |
|
| 1375 |
const std::string& fn); |
|
| 1376 |
friend GraphReader<Graph> graphReader<>(Graph& graph, const char *fn); |
|
| 1386 |
template <typename TGR> |
|
| 1387 |
friend GraphReader<TGR> graphReader(TGR& graph, std::istream& is); |
|
| 1388 |
template <typename TGR> |
|
| 1389 |
friend GraphReader<TGR> graphReader(TGR& graph, const std::string& fn); |
|
| 1390 |
template <typename TGR> |
|
| 1391 |
friend GraphReader<TGR> graphReader(TGR& graph, const char *fn); |
|
| 1377 | 1392 |
|
| 1378 | 1393 |
GraphReader(GraphReader& other) |
| 1379 | 1394 |
: _is(other._is), local_is(other.local_is), _graph(other._graph), |
| 1380 | 1395 |
_use_nodes(other._use_nodes), _use_edges(other._use_edges), |
| 1381 | 1396 |
_skip_nodes(other._skip_nodes), _skip_edges(other._skip_edges) {
|
| 1382 | 1397 |
|
| 1383 | 1398 |
other._is = 0; |
| 1384 | 1399 |
other.local_is = false; |
| 1385 | 1400 |
|
| 1386 | 1401 |
_node_index.swap(other._node_index); |
| 1387 | 1402 |
_edge_index.swap(other._edge_index); |
| 1388 | 1403 |
|
| 1389 | 1404 |
_node_maps.swap(other._node_maps); |
| 1390 | 1405 |
_edge_maps.swap(other._edge_maps); |
| 1391 | 1406 |
_attributes.swap(other._attributes); |
| 1392 | 1407 |
|
| 1393 | 1408 |
_nodes_caption = other._nodes_caption; |
| 1394 | 1409 |
_edges_caption = other._edges_caption; |
| 1395 | 1410 |
_attributes_caption = other._attributes_caption; |
| 1396 | 1411 |
|
| 1397 | 1412 |
} |
| 1398 | 1413 |
|
| 1399 | 1414 |
GraphReader& operator=(const GraphReader&); |
| 1400 | 1415 |
|
| 1401 | 1416 |
public: |
| 1402 | 1417 |
|
| 1403 |
/// \name Reading |
|
| 1418 |
/// \name Reading Rules |
|
| 1404 | 1419 |
/// @{
|
| 1405 | 1420 |
|
| 1406 | 1421 |
/// \brief Node map reading rule |
| 1407 | 1422 |
/// |
| 1408 | 1423 |
/// Add a node map reading rule to the reader. |
| 1409 | 1424 |
template <typename Map> |
| 1410 | 1425 |
GraphReader& nodeMap(const std::string& caption, Map& map) {
|
| 1411 | 1426 |
checkConcept<concepts::WriteMap<Node, typename Map::Value>, Map>(); |
| 1412 | 1427 |
_reader_bits::MapStorageBase<Node>* storage = |
| 1413 | 1428 |
new _reader_bits::MapStorage<Node, Map>(map); |
| 1414 | 1429 |
_node_maps.push_back(std::make_pair(caption, storage)); |
| 1415 | 1430 |
return *this; |
| 1416 | 1431 |
} |
| 1417 | 1432 |
|
| 1418 | 1433 |
/// \brief Node map reading rule |
| 1419 | 1434 |
/// |
| 1420 | 1435 |
/// Add a node map reading rule with specialized converter to the |
| 1421 | 1436 |
/// reader. |
| 1422 | 1437 |
template <typename Map, typename Converter> |
| 1423 | 1438 |
GraphReader& nodeMap(const std::string& caption, Map& map, |
| 1424 | 1439 |
const Converter& converter = Converter()) {
|
| 1425 | 1440 |
checkConcept<concepts::WriteMap<Node, typename Map::Value>, Map>(); |
| 1426 | 1441 |
_reader_bits::MapStorageBase<Node>* storage = |
| 1427 | 1442 |
new _reader_bits::MapStorage<Node, Map, Converter>(map, converter); |
| 1428 | 1443 |
_node_maps.push_back(std::make_pair(caption, storage)); |
| 1429 | 1444 |
return *this; |
| 1430 | 1445 |
} |
| 1431 | 1446 |
|
| 1432 | 1447 |
/// \brief Edge map reading rule |
| 1433 | 1448 |
/// |
| 1434 | 1449 |
/// Add an edge map reading rule to the reader. |
| 1435 | 1450 |
template <typename Map> |
| 1436 | 1451 |
GraphReader& edgeMap(const std::string& caption, Map& map) {
|
| 1437 | 1452 |
checkConcept<concepts::WriteMap<Edge, typename Map::Value>, Map>(); |
| 1438 | 1453 |
_reader_bits::MapStorageBase<Edge>* storage = |
| 1439 | 1454 |
new _reader_bits::MapStorage<Edge, Map>(map); |
| 1440 | 1455 |
_edge_maps.push_back(std::make_pair(caption, storage)); |
| 1441 | 1456 |
return *this; |
| 1442 | 1457 |
} |
| 1443 | 1458 |
|
| 1444 | 1459 |
/// \brief Edge map reading rule |
| 1445 | 1460 |
/// |
| 1446 | 1461 |
/// Add an edge map reading rule with specialized converter to the |
| 1447 | 1462 |
/// reader. |
| 1448 | 1463 |
template <typename Map, typename Converter> |
| 1449 | 1464 |
GraphReader& edgeMap(const std::string& caption, Map& map, |
| 1450 | 1465 |
const Converter& converter = Converter()) {
|
| 1451 | 1466 |
checkConcept<concepts::WriteMap<Edge, typename Map::Value>, Map>(); |
| 1452 | 1467 |
_reader_bits::MapStorageBase<Edge>* storage = |
| 1453 | 1468 |
new _reader_bits::MapStorage<Edge, Map, Converter>(map, converter); |
| 1454 | 1469 |
_edge_maps.push_back(std::make_pair(caption, storage)); |
| 1455 | 1470 |
return *this; |
| 1456 | 1471 |
} |
| 1457 | 1472 |
|
| 1458 | 1473 |
/// \brief Arc map reading rule |
| 1459 | 1474 |
/// |
| 1460 | 1475 |
/// Add an arc map reading rule to the reader. |
| 1461 | 1476 |
template <typename Map> |
| 1462 | 1477 |
GraphReader& arcMap(const std::string& caption, Map& map) {
|
| 1463 | 1478 |
checkConcept<concepts::WriteMap<Arc, typename Map::Value>, Map>(); |
| 1464 | 1479 |
_reader_bits::MapStorageBase<Edge>* forward_storage = |
| 1465 | 1480 |
new _reader_bits::GraphArcMapStorage<Graph, true, Map>(_graph, map); |
| 1466 | 1481 |
_edge_maps.push_back(std::make_pair('+' + caption, forward_storage));
|
| 1467 | 1482 |
_reader_bits::MapStorageBase<Edge>* backward_storage = |
| 1468 |
new _reader_bits::GraphArcMapStorage< |
|
| 1483 |
new _reader_bits::GraphArcMapStorage<GR, false, Map>(_graph, map); |
|
| 1469 | 1484 |
_edge_maps.push_back(std::make_pair('-' + caption, backward_storage));
|
| 1470 | 1485 |
return *this; |
| 1471 | 1486 |
} |
| 1472 | 1487 |
|
| 1473 | 1488 |
/// \brief Arc map reading rule |
| 1474 | 1489 |
/// |
| 1475 | 1490 |
/// Add an arc map reading rule with specialized converter to the |
| 1476 | 1491 |
/// reader. |
| 1477 | 1492 |
template <typename Map, typename Converter> |
| 1478 | 1493 |
GraphReader& arcMap(const std::string& caption, Map& map, |
| 1479 | 1494 |
const Converter& converter = Converter()) {
|
| 1480 | 1495 |
checkConcept<concepts::WriteMap<Arc, typename Map::Value>, Map>(); |
| 1481 | 1496 |
_reader_bits::MapStorageBase<Edge>* forward_storage = |
| 1482 |
new _reader_bits::GraphArcMapStorage< |
|
| 1497 |
new _reader_bits::GraphArcMapStorage<GR, true, Map, Converter> |
|
| 1483 | 1498 |
(_graph, map, converter); |
| 1484 | 1499 |
_edge_maps.push_back(std::make_pair('+' + caption, forward_storage));
|
| 1485 | 1500 |
_reader_bits::MapStorageBase<Edge>* backward_storage = |
| 1486 |
new _reader_bits::GraphArcMapStorage< |
|
| 1501 |
new _reader_bits::GraphArcMapStorage<GR, false, Map, Converter> |
|
| 1487 | 1502 |
(_graph, map, converter); |
| 1488 | 1503 |
_edge_maps.push_back(std::make_pair('-' + caption, backward_storage));
|
| 1489 | 1504 |
return *this; |
| 1490 | 1505 |
} |
| 1491 | 1506 |
|
| 1492 | 1507 |
/// \brief Attribute reading rule |
| 1493 | 1508 |
/// |
| 1494 | 1509 |
/// Add an attribute reading rule to the reader. |
| 1495 | 1510 |
template <typename Value> |
| 1496 | 1511 |
GraphReader& attribute(const std::string& caption, Value& value) {
|
| 1497 | 1512 |
_reader_bits::ValueStorageBase* storage = |
| 1498 | 1513 |
new _reader_bits::ValueStorage<Value>(value); |
| 1499 | 1514 |
_attributes.insert(std::make_pair(caption, storage)); |
| 1500 | 1515 |
return *this; |
| 1501 | 1516 |
} |
| 1502 | 1517 |
|
| 1503 | 1518 |
/// \brief Attribute reading rule |
| 1504 | 1519 |
/// |
| 1505 | 1520 |
/// Add an attribute reading rule with specialized converter to the |
| 1506 | 1521 |
/// reader. |
| 1507 | 1522 |
template <typename Value, typename Converter> |
| 1508 | 1523 |
GraphReader& attribute(const std::string& caption, Value& value, |
| 1509 | 1524 |
const Converter& converter = Converter()) {
|
| 1510 | 1525 |
_reader_bits::ValueStorageBase* storage = |
| 1511 | 1526 |
new _reader_bits::ValueStorage<Value, Converter>(value, converter); |
| 1512 | 1527 |
_attributes.insert(std::make_pair(caption, storage)); |
| 1513 | 1528 |
return *this; |
| 1514 | 1529 |
} |
| 1515 | 1530 |
|
| 1516 | 1531 |
/// \brief Node reading rule |
| 1517 | 1532 |
/// |
| 1518 | 1533 |
/// Add a node reading rule to reader. |
| 1519 | 1534 |
GraphReader& node(const std::string& caption, Node& node) {
|
| 1520 | 1535 |
typedef _reader_bits::MapLookUpConverter<Node> Converter; |
| 1521 | 1536 |
Converter converter(_node_index); |
| 1522 | 1537 |
_reader_bits::ValueStorageBase* storage = |
| 1523 | 1538 |
new _reader_bits::ValueStorage<Node, Converter>(node, converter); |
| 1524 | 1539 |
_attributes.insert(std::make_pair(caption, storage)); |
| 1525 | 1540 |
return *this; |
| 1526 | 1541 |
} |
| 1527 | 1542 |
|
| 1528 | 1543 |
/// \brief Edge reading rule |
| 1529 | 1544 |
/// |
| 1530 | 1545 |
/// Add an edge reading rule to reader. |
| 1531 | 1546 |
GraphReader& edge(const std::string& caption, Edge& edge) {
|
| 1532 | 1547 |
typedef _reader_bits::MapLookUpConverter<Edge> Converter; |
| 1533 | 1548 |
Converter converter(_edge_index); |
| 1534 | 1549 |
_reader_bits::ValueStorageBase* storage = |
| 1535 | 1550 |
new _reader_bits::ValueStorage<Edge, Converter>(edge, converter); |
| 1536 | 1551 |
_attributes.insert(std::make_pair(caption, storage)); |
| 1537 | 1552 |
return *this; |
| 1538 | 1553 |
} |
| 1539 | 1554 |
|
| 1540 | 1555 |
/// \brief Arc reading rule |
| 1541 | 1556 |
/// |
| 1542 | 1557 |
/// Add an arc reading rule to reader. |
| 1543 | 1558 |
GraphReader& arc(const std::string& caption, Arc& arc) {
|
| 1544 |
typedef _reader_bits::GraphArcLookUpConverter< |
|
| 1559 |
typedef _reader_bits::GraphArcLookUpConverter<GR> Converter; |
|
| 1545 | 1560 |
Converter converter(_graph, _edge_index); |
| 1546 | 1561 |
_reader_bits::ValueStorageBase* storage = |
| 1547 | 1562 |
new _reader_bits::ValueStorage<Arc, Converter>(arc, converter); |
| 1548 | 1563 |
_attributes.insert(std::make_pair(caption, storage)); |
| 1549 | 1564 |
return *this; |
| 1550 | 1565 |
} |
| 1551 | 1566 |
|
| 1552 | 1567 |
/// @} |
| 1553 | 1568 |
|
| 1554 |
/// \name Select |
|
| 1569 |
/// \name Select Section by Name |
|
| 1555 | 1570 |
/// @{
|
| 1556 | 1571 |
|
| 1557 | 1572 |
/// \brief Set \c \@nodes section to be read |
| 1558 | 1573 |
/// |
| 1559 | 1574 |
/// Set \c \@nodes section to be read. |
| 1560 | 1575 |
GraphReader& nodes(const std::string& caption) {
|
| 1561 | 1576 |
_nodes_caption = caption; |
| 1562 | 1577 |
return *this; |
| 1563 | 1578 |
} |
| 1564 | 1579 |
|
| 1565 | 1580 |
/// \brief Set \c \@edges section to be read |
| 1566 | 1581 |
/// |
| 1567 | 1582 |
/// Set \c \@edges section to be read. |
| 1568 | 1583 |
GraphReader& edges(const std::string& caption) {
|
| 1569 | 1584 |
_edges_caption = caption; |
| 1570 | 1585 |
return *this; |
| 1571 | 1586 |
} |
| 1572 | 1587 |
|
| 1573 | 1588 |
/// \brief Set \c \@attributes section to be read |
| 1574 | 1589 |
/// |
| 1575 | 1590 |
/// Set \c \@attributes section to be read. |
| 1576 | 1591 |
GraphReader& attributes(const std::string& caption) {
|
| 1577 | 1592 |
_attributes_caption = caption; |
| 1578 | 1593 |
return *this; |
| 1579 | 1594 |
} |
| 1580 | 1595 |
|
| 1581 | 1596 |
/// @} |
| 1582 | 1597 |
|
| 1583 |
/// \name Using |
|
| 1598 |
/// \name Using Previously Constructed Node or Edge Set |
|
| 1584 | 1599 |
/// @{
|
| 1585 | 1600 |
|
| 1586 | 1601 |
/// \brief Use previously constructed node set |
| 1587 | 1602 |
/// |
| 1588 | 1603 |
/// Use previously constructed node set, and specify the node |
| 1589 | 1604 |
/// label map. |
| 1590 | 1605 |
template <typename Map> |
| 1591 | 1606 |
GraphReader& useNodes(const Map& map) {
|
| 1592 | 1607 |
checkConcept<concepts::ReadMap<Node, typename Map::Value>, Map>(); |
| 1593 | 1608 |
LEMON_ASSERT(!_use_nodes, "Multiple usage of useNodes() member"); |
| 1594 | 1609 |
_use_nodes = true; |
| 1595 | 1610 |
_writer_bits::DefaultConverter<typename Map::Value> converter; |
| 1596 | 1611 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 1597 | 1612 |
_node_index.insert(std::make_pair(converter(map[n]), n)); |
| 1598 | 1613 |
} |
| 1599 | 1614 |
return *this; |
| 1600 | 1615 |
} |
| 1601 | 1616 |
|
| 1602 | 1617 |
/// \brief Use previously constructed node set |
| 1603 | 1618 |
/// |
| 1604 | 1619 |
/// Use previously constructed node set, and specify the node |
| 1605 | 1620 |
/// label map and a functor which converts the label map values to |
| 1606 | 1621 |
/// \c std::string. |
| 1607 | 1622 |
template <typename Map, typename Converter> |
| 1608 | 1623 |
GraphReader& useNodes(const Map& map, |
| 1609 | 1624 |
const Converter& converter = Converter()) {
|
| 1610 | 1625 |
checkConcept<concepts::ReadMap<Node, typename Map::Value>, Map>(); |
| 1611 | 1626 |
LEMON_ASSERT(!_use_nodes, "Multiple usage of useNodes() member"); |
| 1612 | 1627 |
_use_nodes = true; |
| 1613 | 1628 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 1614 | 1629 |
_node_index.insert(std::make_pair(converter(map[n]), n)); |
| 1615 | 1630 |
} |
| 1616 | 1631 |
return *this; |
| 1617 | 1632 |
} |
| 1618 | 1633 |
|
| 1619 | 1634 |
/// \brief Use previously constructed edge set |
| 1620 | 1635 |
/// |
| 1621 | 1636 |
/// Use previously constructed edge set, and specify the edge |
| 1622 | 1637 |
/// label map. |
| 1623 | 1638 |
template <typename Map> |
| 1624 | 1639 |
GraphReader& useEdges(const Map& map) {
|
| 1625 | 1640 |
checkConcept<concepts::ReadMap<Edge, typename Map::Value>, Map>(); |
| 1626 | 1641 |
LEMON_ASSERT(!_use_edges, "Multiple usage of useEdges() member"); |
| 1627 | 1642 |
_use_edges = true; |
| 1628 | 1643 |
_writer_bits::DefaultConverter<typename Map::Value> converter; |
| 1629 | 1644 |
for (EdgeIt a(_graph); a != INVALID; ++a) {
|
| 1630 | 1645 |
_edge_index.insert(std::make_pair(converter(map[a]), a)); |
| 1631 | 1646 |
} |
| 1632 | 1647 |
return *this; |
| 1633 | 1648 |
} |
| 1634 | 1649 |
|
| 1635 | 1650 |
/// \brief Use previously constructed edge set |
| 1636 | 1651 |
/// |
| 1637 | 1652 |
/// Use previously constructed edge set, and specify the edge |
| 1638 | 1653 |
/// label map and a functor which converts the label map values to |
| 1639 | 1654 |
/// \c std::string. |
| 1640 | 1655 |
template <typename Map, typename Converter> |
| 1641 | 1656 |
GraphReader& useEdges(const Map& map, |
| 1642 | 1657 |
const Converter& converter = Converter()) {
|
| 1643 | 1658 |
checkConcept<concepts::ReadMap<Edge, typename Map::Value>, Map>(); |
| 1644 | 1659 |
LEMON_ASSERT(!_use_edges, "Multiple usage of useEdges() member"); |
| 1645 | 1660 |
_use_edges = true; |
| 1646 | 1661 |
for (EdgeIt a(_graph); a != INVALID; ++a) {
|
| 1647 | 1662 |
_edge_index.insert(std::make_pair(converter(map[a]), a)); |
| 1648 | 1663 |
} |
| 1649 | 1664 |
return *this; |
| 1650 | 1665 |
} |
| 1651 | 1666 |
|
| 1652 | 1667 |
/// \brief Skip the reading of node section |
| 1653 | 1668 |
/// |
| 1654 | 1669 |
/// Omit the reading of the node section. This implies that each node |
| 1655 | 1670 |
/// map reading rule will be abandoned, and the nodes of the graph |
| 1656 | 1671 |
/// will not be constructed, which usually cause that the edge set |
| 1657 | 1672 |
/// could not be read due to lack of node name |
| 1658 | 1673 |
/// could not be read due to lack of node name resolving. |
| 1659 | 1674 |
/// Therefore \c skipEdges() function should also be used, or |
| 1660 | 1675 |
/// \c useNodes() should be used to specify the label of the nodes. |
| 1661 | 1676 |
GraphReader& skipNodes() {
|
| 1662 | 1677 |
LEMON_ASSERT(!_skip_nodes, "Skip nodes already set"); |
| 1663 | 1678 |
_skip_nodes = true; |
| 1664 | 1679 |
return *this; |
| 1665 | 1680 |
} |
| 1666 | 1681 |
|
| 1667 | 1682 |
/// \brief Skip the reading of edge section |
| 1668 | 1683 |
/// |
| 1669 | 1684 |
/// Omit the reading of the edge section. This implies that each edge |
| 1670 | 1685 |
/// map reading rule will be abandoned, and the edges of the graph |
| 1671 | 1686 |
/// will not be constructed. |
| 1672 | 1687 |
GraphReader& skipEdges() {
|
| 1673 | 1688 |
LEMON_ASSERT(!_skip_edges, "Skip edges already set"); |
| 1674 | 1689 |
_skip_edges = true; |
| 1675 | 1690 |
return *this; |
| 1676 | 1691 |
} |
| 1677 | 1692 |
|
| 1678 | 1693 |
/// @} |
| 1679 | 1694 |
|
| 1680 | 1695 |
private: |
| 1681 | 1696 |
|
| 1682 | 1697 |
bool readLine() {
|
| 1683 | 1698 |
std::string str; |
| 1684 | 1699 |
while(++line_num, std::getline(*_is, str)) {
|
| 1685 | 1700 |
line.clear(); line.str(str); |
| 1686 | 1701 |
char c; |
| 1687 | 1702 |
if (line >> std::ws >> c && c != '#') {
|
| 1688 | 1703 |
line.putback(c); |
| 1689 | 1704 |
return true; |
| 1690 | 1705 |
} |
| 1691 | 1706 |
} |
| 1692 | 1707 |
return false; |
| 1693 | 1708 |
} |
| 1694 | 1709 |
|
| 1695 | 1710 |
bool readSuccess() {
|
| 1696 | 1711 |
return static_cast<bool>(*_is); |
| 1697 | 1712 |
} |
| 1698 | 1713 |
|
| 1699 | 1714 |
void skipSection() {
|
| 1700 | 1715 |
char c; |
| 1701 | 1716 |
while (readSuccess() && line >> c && c != '@') {
|
| 1702 | 1717 |
readLine(); |
| 1703 | 1718 |
} |
| 1704 | 1719 |
if (readSuccess()) {
|
| 1705 | 1720 |
line.putback(c); |
| 1706 | 1721 |
} |
| 1707 | 1722 |
} |
| 1708 | 1723 |
|
| 1709 | 1724 |
void readNodes() {
|
| 1710 | 1725 |
|
| 1711 | 1726 |
std::vector<int> map_index(_node_maps.size()); |
| 1712 | 1727 |
int map_num, label_index; |
| 1713 | 1728 |
|
| 1714 | 1729 |
char c; |
| 1715 | 1730 |
if (!readLine() || !(line >> c) || c == '@') {
|
| 1716 | 1731 |
if (readSuccess() && line) line.putback(c); |
| 1717 | 1732 |
if (!_node_maps.empty()) |
| 1718 | 1733 |
throw FormatError("Cannot find map names");
|
| 1719 | 1734 |
return; |
| 1720 | 1735 |
} |
| 1721 | 1736 |
line.putback(c); |
| 1722 | 1737 |
|
| 1723 | 1738 |
{
|
| 1724 | 1739 |
std::map<std::string, int> maps; |
| 1725 | 1740 |
|
| 1726 | 1741 |
std::string map; |
| 1727 | 1742 |
int index = 0; |
| 1728 | 1743 |
while (_reader_bits::readToken(line, map)) {
|
| 1729 | 1744 |
if (maps.find(map) != maps.end()) {
|
| 1730 | 1745 |
std::ostringstream msg; |
| 1731 | 1746 |
msg << "Multiple occurence of node map: " << map; |
| 1732 | 1747 |
throw FormatError(msg.str()); |
| 1733 | 1748 |
} |
| 1734 | 1749 |
maps.insert(std::make_pair(map, index)); |
| 1735 | 1750 |
++index; |
| 1736 | 1751 |
} |
| 1737 | 1752 |
|
| 1738 | 1753 |
for (int i = 0; i < static_cast<int>(_node_maps.size()); ++i) {
|
| 1739 | 1754 |
std::map<std::string, int>::iterator jt = |
| 1740 | 1755 |
maps.find(_node_maps[i].first); |
| 1741 | 1756 |
if (jt == maps.end()) {
|
| 1742 | 1757 |
std::ostringstream msg; |
| 1743 | 1758 |
msg << "Map not found: " << _node_maps[i].first; |
| 1744 | 1759 |
throw FormatError(msg.str()); |
| 1745 | 1760 |
} |
| 1746 | 1761 |
map_index[i] = jt->second; |
| 1747 | 1762 |
} |
| 1748 | 1763 |
|
| 1749 | 1764 |
{
|
| 1750 | 1765 |
std::map<std::string, int>::iterator jt = maps.find("label");
|
| 1751 | 1766 |
if (jt != maps.end()) {
|
| 1752 | 1767 |
label_index = jt->second; |
| 1753 | 1768 |
} else {
|
| 1754 | 1769 |
label_index = -1; |
| 1755 | 1770 |
} |
| 1756 | 1771 |
} |
| 1757 | 1772 |
map_num = maps.size(); |
| 1758 | 1773 |
} |
| 1759 | 1774 |
|
| 1760 | 1775 |
while (readLine() && line >> c && c != '@') {
|
| 1761 | 1776 |
line.putback(c); |
| 1762 | 1777 |
|
| 1763 | 1778 |
std::vector<std::string> tokens(map_num); |
| 1764 | 1779 |
for (int i = 0; i < map_num; ++i) {
|
| 1765 | 1780 |
if (!_reader_bits::readToken(line, tokens[i])) {
|
| 1766 | 1781 |
std::ostringstream msg; |
| 1767 | 1782 |
msg << "Column not found (" << i + 1 << ")";
|
| 1768 | 1783 |
throw FormatError(msg.str()); |
| 1769 | 1784 |
} |
| 1770 | 1785 |
} |
| 1771 | 1786 |
if (line >> std::ws >> c) |
| 1772 | 1787 |
throw FormatError("Extra character at the end of line");
|
| 1773 | 1788 |
|
| 1774 | 1789 |
Node n; |
| 1775 | 1790 |
if (!_use_nodes) {
|
| 1776 | 1791 |
n = _graph.addNode(); |
| 1777 | 1792 |
if (label_index != -1) |
| 1778 | 1793 |
_node_index.insert(std::make_pair(tokens[label_index], n)); |
| 1779 | 1794 |
} else {
|
| 1780 | 1795 |
if (label_index == -1) |
| 1781 | 1796 |
throw FormatError("Label map not found");
|
| 1782 | 1797 |
typename std::map<std::string, Node>::iterator it = |
| 1783 | 1798 |
_node_index.find(tokens[label_index]); |
| 1784 | 1799 |
if (it == _node_index.end()) {
|
| 1785 | 1800 |
std::ostringstream msg; |
| 1786 | 1801 |
msg << "Node with label not found: " << tokens[label_index]; |
| 1787 | 1802 |
throw FormatError(msg.str()); |
| 1788 | 1803 |
} |
| 1789 | 1804 |
n = it->second; |
| 1790 | 1805 |
} |
| 1791 | 1806 |
|
| 1792 | 1807 |
for (int i = 0; i < static_cast<int>(_node_maps.size()); ++i) {
|
| 1793 | 1808 |
_node_maps[i].second->set(n, tokens[map_index[i]]); |
| 1794 | 1809 |
} |
| 1795 | 1810 |
|
| 1796 | 1811 |
} |
| 1797 | 1812 |
if (readSuccess()) {
|
| 1798 | 1813 |
line.putback(c); |
| 1799 | 1814 |
} |
| 1800 | 1815 |
} |
| 1801 | 1816 |
|
| 1802 | 1817 |
void readEdges() {
|
| 1803 | 1818 |
|
| 1804 | 1819 |
std::vector<int> map_index(_edge_maps.size()); |
| 1805 | 1820 |
int map_num, label_index; |
| 1806 | 1821 |
|
| 1807 | 1822 |
char c; |
| 1808 | 1823 |
if (!readLine() || !(line >> c) || c == '@') {
|
| 1809 | 1824 |
if (readSuccess() && line) line.putback(c); |
| 1810 | 1825 |
if (!_edge_maps.empty()) |
| 1811 | 1826 |
throw FormatError("Cannot find map names");
|
| 1812 | 1827 |
return; |
| 1813 | 1828 |
} |
| 1814 | 1829 |
line.putback(c); |
| 1815 | 1830 |
|
| 1816 | 1831 |
{
|
| 1817 | 1832 |
std::map<std::string, int> maps; |
| 1818 | 1833 |
|
| 1819 | 1834 |
std::string map; |
| 1820 | 1835 |
int index = 0; |
| 1821 | 1836 |
while (_reader_bits::readToken(line, map)) {
|
| 1822 | 1837 |
if (maps.find(map) != maps.end()) {
|
| 1823 | 1838 |
std::ostringstream msg; |
| 1824 | 1839 |
msg << "Multiple occurence of edge map: " << map; |
| 1825 | 1840 |
throw FormatError(msg.str()); |
| 1826 | 1841 |
} |
| 1827 | 1842 |
maps.insert(std::make_pair(map, index)); |
| 1828 | 1843 |
++index; |
| 1829 | 1844 |
} |
| 1830 | 1845 |
|
| 1831 | 1846 |
for (int i = 0; i < static_cast<int>(_edge_maps.size()); ++i) {
|
| 1832 | 1847 |
std::map<std::string, int>::iterator jt = |
| 1833 | 1848 |
maps.find(_edge_maps[i].first); |
| 1834 | 1849 |
if (jt == maps.end()) {
|
| 1835 | 1850 |
std::ostringstream msg; |
| 1836 | 1851 |
msg << "Map not found: " << _edge_maps[i].first; |
| 1837 | 1852 |
throw FormatError(msg.str()); |
| 1838 | 1853 |
} |
| 1839 | 1854 |
map_index[i] = jt->second; |
| 1840 | 1855 |
} |
| 1841 | 1856 |
|
| 1842 | 1857 |
{
|
| 1843 | 1858 |
std::map<std::string, int>::iterator jt = maps.find("label");
|
| 1844 | 1859 |
if (jt != maps.end()) {
|
| 1845 | 1860 |
label_index = jt->second; |
| 1846 | 1861 |
} else {
|
| 1847 | 1862 |
label_index = -1; |
| 1848 | 1863 |
} |
| 1849 | 1864 |
} |
| 1850 | 1865 |
map_num = maps.size(); |
| 1851 | 1866 |
} |
| 1852 | 1867 |
|
| 1853 | 1868 |
while (readLine() && line >> c && c != '@') {
|
| 1854 | 1869 |
line.putback(c); |
| 1855 | 1870 |
|
| 1856 | 1871 |
std::string source_token; |
| 1857 | 1872 |
std::string target_token; |
| 1858 | 1873 |
|
| 1859 | 1874 |
if (!_reader_bits::readToken(line, source_token)) |
| 1860 | 1875 |
throw FormatError("Node u not found");
|
| 1861 | 1876 |
|
| 1862 | 1877 |
if (!_reader_bits::readToken(line, target_token)) |
| 1863 | 1878 |
throw FormatError("Node v not found");
|
| 1864 | 1879 |
|
| 1865 | 1880 |
std::vector<std::string> tokens(map_num); |
| 1866 | 1881 |
for (int i = 0; i < map_num; ++i) {
|
| 1867 | 1882 |
if (!_reader_bits::readToken(line, tokens[i])) {
|
| 1868 | 1883 |
std::ostringstream msg; |
| 1869 | 1884 |
msg << "Column not found (" << i + 1 << ")";
|
| 1870 | 1885 |
throw FormatError(msg.str()); |
| 1871 | 1886 |
} |
| 1872 | 1887 |
} |
| 1873 | 1888 |
if (line >> std::ws >> c) |
| 1874 | 1889 |
throw FormatError("Extra character at the end of line");
|
| 1875 | 1890 |
|
| 1876 | 1891 |
Edge e; |
| 1877 | 1892 |
if (!_use_edges) {
|
| 1878 | 1893 |
|
| 1879 | 1894 |
typename NodeIndex::iterator it; |
| 1880 | 1895 |
|
| 1881 | 1896 |
it = _node_index.find(source_token); |
| 1882 | 1897 |
if (it == _node_index.end()) {
|
| 1883 | 1898 |
std::ostringstream msg; |
| 1884 | 1899 |
msg << "Item not found: " << source_token; |
| 1885 | 1900 |
throw FormatError(msg.str()); |
| 1886 | 1901 |
} |
| 1887 | 1902 |
Node source = it->second; |
| 1888 | 1903 |
|
| 1889 | 1904 |
it = _node_index.find(target_token); |
| 1890 | 1905 |
if (it == _node_index.end()) {
|
| 1891 | 1906 |
std::ostringstream msg; |
| 1892 | 1907 |
msg << "Item not found: " << target_token; |
| 1893 | 1908 |
throw FormatError(msg.str()); |
| 1894 | 1909 |
} |
| 1895 | 1910 |
Node target = it->second; |
| 1896 | 1911 |
|
| 1897 | 1912 |
e = _graph.addEdge(source, target); |
| 1898 | 1913 |
if (label_index != -1) |
| 1899 | 1914 |
_edge_index.insert(std::make_pair(tokens[label_index], e)); |
| 1900 | 1915 |
} else {
|
| 1901 | 1916 |
if (label_index == -1) |
| 1902 | 1917 |
throw FormatError("Label map not found");
|
| 1903 | 1918 |
typename std::map<std::string, Edge>::iterator it = |
| 1904 | 1919 |
_edge_index.find(tokens[label_index]); |
| 1905 | 1920 |
if (it == _edge_index.end()) {
|
| 1906 | 1921 |
std::ostringstream msg; |
| 1907 | 1922 |
msg << "Edge with label not found: " << tokens[label_index]; |
| 1908 | 1923 |
throw FormatError(msg.str()); |
| 1909 | 1924 |
} |
| 1910 | 1925 |
e = it->second; |
| 1911 | 1926 |
} |
| 1912 | 1927 |
|
| 1913 | 1928 |
for (int i = 0; i < static_cast<int>(_edge_maps.size()); ++i) {
|
| 1914 | 1929 |
_edge_maps[i].second->set(e, tokens[map_index[i]]); |
| 1915 | 1930 |
} |
| 1916 | 1931 |
|
| 1917 | 1932 |
} |
| 1918 | 1933 |
if (readSuccess()) {
|
| 1919 | 1934 |
line.putback(c); |
| 1920 | 1935 |
} |
| 1921 | 1936 |
} |
| 1922 | 1937 |
|
| 1923 | 1938 |
void readAttributes() {
|
| 1924 | 1939 |
|
| 1925 | 1940 |
std::set<std::string> read_attr; |
| 1926 | 1941 |
|
| 1927 | 1942 |
char c; |
| 1928 | 1943 |
while (readLine() && line >> c && c != '@') {
|
| 1929 | 1944 |
line.putback(c); |
| 1930 | 1945 |
|
| 1931 | 1946 |
std::string attr, token; |
| 1932 | 1947 |
if (!_reader_bits::readToken(line, attr)) |
| 1933 | 1948 |
throw FormatError("Attribute name not found");
|
| 1934 | 1949 |
if (!_reader_bits::readToken(line, token)) |
| 1935 | 1950 |
throw FormatError("Attribute value not found");
|
| 1936 | 1951 |
if (line >> c) |
| 1937 | 1952 |
throw FormatError("Extra character at the end of line");
|
| 1938 | 1953 |
|
| 1939 | 1954 |
{
|
| 1940 | 1955 |
std::set<std::string>::iterator it = read_attr.find(attr); |
| 1941 | 1956 |
if (it != read_attr.end()) {
|
| 1942 | 1957 |
std::ostringstream msg; |
| 1943 | 1958 |
msg << "Multiple occurence of attribute: " << attr; |
| 1944 | 1959 |
throw FormatError(msg.str()); |
| 1945 | 1960 |
} |
| 1946 | 1961 |
read_attr.insert(attr); |
| 1947 | 1962 |
} |
| 1948 | 1963 |
|
| 1949 | 1964 |
{
|
| 1950 | 1965 |
typename Attributes::iterator it = _attributes.lower_bound(attr); |
| 1951 | 1966 |
while (it != _attributes.end() && it->first == attr) {
|
| 1952 | 1967 |
it->second->set(token); |
| 1953 | 1968 |
++it; |
| 1954 | 1969 |
} |
| 1955 | 1970 |
} |
| 1956 | 1971 |
|
| 1957 | 1972 |
} |
| 1958 | 1973 |
if (readSuccess()) {
|
| 1959 | 1974 |
line.putback(c); |
| 1960 | 1975 |
} |
| 1961 | 1976 |
for (typename Attributes::iterator it = _attributes.begin(); |
| 1962 | 1977 |
it != _attributes.end(); ++it) {
|
| 1963 | 1978 |
if (read_attr.find(it->first) == read_attr.end()) {
|
| 1964 | 1979 |
std::ostringstream msg; |
| 1965 | 1980 |
msg << "Attribute not found: " << it->first; |
| 1966 | 1981 |
throw FormatError(msg.str()); |
| 1967 | 1982 |
} |
| 1968 | 1983 |
} |
| 1969 | 1984 |
} |
| 1970 | 1985 |
|
| 1971 | 1986 |
public: |
| 1972 | 1987 |
|
| 1973 |
/// \name Execution of the |
|
| 1988 |
/// \name Execution of the Reader |
|
| 1974 | 1989 |
/// @{
|
| 1975 | 1990 |
|
| 1976 | 1991 |
/// \brief Start the batch processing |
| 1977 | 1992 |
/// |
| 1978 | 1993 |
/// This function starts the batch processing |
| 1979 | 1994 |
void run() {
|
| 1980 | 1995 |
|
| 1981 | 1996 |
LEMON_ASSERT(_is != 0, "This reader assigned to an other reader"); |
| 1982 | 1997 |
|
| 1983 | 1998 |
bool nodes_done = _skip_nodes; |
| 1984 | 1999 |
bool edges_done = _skip_edges; |
| 1985 | 2000 |
bool attributes_done = false; |
| 1986 | 2001 |
|
| 1987 | 2002 |
line_num = 0; |
| 1988 | 2003 |
readLine(); |
| 1989 | 2004 |
skipSection(); |
| 1990 | 2005 |
|
| 1991 | 2006 |
while (readSuccess()) {
|
| 1992 | 2007 |
try {
|
| 1993 | 2008 |
char c; |
| 1994 | 2009 |
std::string section, caption; |
| 1995 | 2010 |
line >> c; |
| 1996 | 2011 |
_reader_bits::readToken(line, section); |
| 1997 | 2012 |
_reader_bits::readToken(line, caption); |
| 1998 | 2013 |
|
| 1999 | 2014 |
if (line >> c) |
| 2000 | 2015 |
throw FormatError("Extra character at the end of line");
|
| 2001 | 2016 |
|
| 2002 | 2017 |
if (section == "nodes" && !nodes_done) {
|
| 2003 | 2018 |
if (_nodes_caption.empty() || _nodes_caption == caption) {
|
| 2004 | 2019 |
readNodes(); |
| 2005 | 2020 |
nodes_done = true; |
| 2006 | 2021 |
} |
| 2007 | 2022 |
} else if ((section == "edges" || section == "arcs") && |
| 2008 | 2023 |
!edges_done) {
|
| 2009 | 2024 |
if (_edges_caption.empty() || _edges_caption == caption) {
|
| 2010 | 2025 |
readEdges(); |
| 2011 | 2026 |
edges_done = true; |
| 2012 | 2027 |
} |
| 2013 | 2028 |
} else if (section == "attributes" && !attributes_done) {
|
| 2014 | 2029 |
if (_attributes_caption.empty() || _attributes_caption == caption) {
|
| 2015 | 2030 |
readAttributes(); |
| 2016 | 2031 |
attributes_done = true; |
| 2017 | 2032 |
} |
| 2018 | 2033 |
} else {
|
| 2019 | 2034 |
readLine(); |
| 2020 | 2035 |
skipSection(); |
| 2021 | 2036 |
} |
| 2022 | 2037 |
} catch (FormatError& error) {
|
| 2023 | 2038 |
error.line(line_num); |
| 2024 | 2039 |
error.file(_filename); |
| 2025 | 2040 |
throw; |
| 2026 | 2041 |
} |
| 2027 | 2042 |
} |
| 2028 | 2043 |
|
| 2029 | 2044 |
if (!nodes_done) {
|
| 2030 | 2045 |
throw FormatError("Section @nodes not found");
|
| 2031 | 2046 |
} |
| 2032 | 2047 |
|
| 2033 | 2048 |
if (!edges_done) {
|
| 2034 | 2049 |
throw FormatError("Section @edges not found");
|
| 2035 | 2050 |
} |
| 2036 | 2051 |
|
| 2037 | 2052 |
if (!attributes_done && !_attributes.empty()) {
|
| 2038 | 2053 |
throw FormatError("Section @attributes not found");
|
| 2039 | 2054 |
} |
| 2040 | 2055 |
|
| 2041 | 2056 |
} |
| 2042 | 2057 |
|
| 2043 | 2058 |
/// @} |
| 2044 | 2059 |
|
| 2045 | 2060 |
}; |
| 2046 | 2061 |
|
| 2062 |
/// \ingroup lemon_io |
|
| 2063 |
/// |
|
| 2064 |
/// \brief Return a \ref GraphReader class |
|
| 2065 |
/// |
|
| 2066 |
/// This function just returns a \ref GraphReader class. |
|
| 2067 |
/// |
|
| 2068 |
/// With this function a graph can be read from an |
|
| 2069 |
/// \ref lgf-format "LGF" file or input stream with several maps and |
|
| 2070 |
/// attributes. For example, there is weighted matching problem on a |
|
| 2071 |
/// graph, i.e. a graph with a \e weight map on the edges. This |
|
| 2072 |
/// graph can be read with the following code: |
|
| 2073 |
/// |
|
| 2074 |
///\code |
|
| 2075 |
///ListGraph graph; |
|
| 2076 |
///ListGraph::EdgeMap<int> weight(graph); |
|
| 2077 |
///graphReader(graph, std::cin). |
|
| 2078 |
/// edgeMap("weight", weight).
|
|
| 2079 |
/// run(); |
|
| 2080 |
///\endcode |
|
| 2081 |
/// |
|
| 2082 |
/// For a complete documentation, please see the \ref GraphReader |
|
| 2083 |
/// class documentation. |
|
| 2084 |
/// \warning Don't forget to put the \ref GraphReader::run() "run()" |
|
| 2085 |
/// to the end of the parameter list. |
|
| 2086 |
/// \relates GraphReader |
|
| 2087 |
/// \sa graphReader(TGR& graph, const std::string& fn) |
|
| 2088 |
/// \sa graphReader(TGR& graph, const char* fn) |
|
| 2089 |
template <typename TGR> |
|
| 2090 |
GraphReader<TGR> graphReader(TGR& graph, std::istream& is) {
|
|
| 2091 |
GraphReader<TGR> tmp(graph, is); |
|
| 2092 |
return tmp; |
|
| 2093 |
} |
|
| 2094 |
|
|
| 2095 |
/// \brief Return a \ref GraphReader class |
|
| 2096 |
/// |
|
| 2097 |
/// This function just returns a \ref GraphReader class. |
|
| 2098 |
/// \relates GraphReader |
|
| 2099 |
/// \sa graphReader(TGR& graph, std::istream& is) |
|
| 2100 |
template <typename TGR> |
|
| 2101 |
GraphReader<TGR> graphReader(TGR& graph, const std::string& fn) {
|
|
| 2102 |
GraphReader<TGR> tmp(graph, fn); |
|
| 2103 |
return tmp; |
|
| 2104 |
} |
|
| 2105 |
|
|
| 2106 |
/// \brief Return a \ref GraphReader class |
|
| 2107 |
/// |
|
| 2108 |
/// This function just returns a \ref GraphReader class. |
|
| 2109 |
/// \relates GraphReader |
|
| 2110 |
/// \sa graphReader(TGR& graph, std::istream& is) |
|
| 2111 |
template <typename TGR> |
|
| 2112 |
GraphReader<TGR> graphReader(TGR& graph, const char* fn) {
|
|
| 2113 |
GraphReader<TGR> tmp(graph, fn); |
|
| 2114 |
return tmp; |
|
| 2115 |
} |
|
| 2116 |
|
|
| 2047 | 2117 |
class SectionReader; |
| 2048 | 2118 |
|
| 2049 | 2119 |
SectionReader sectionReader(std::istream& is); |
| 2050 | 2120 |
SectionReader sectionReader(const std::string& fn); |
| 2051 | 2121 |
SectionReader sectionReader(const char* fn); |
| 2052 | 2122 |
|
| 2053 | 2123 |
/// \ingroup lemon_io |
| 2054 | 2124 |
/// |
| 2055 | 2125 |
/// \brief Section reader class |
| 2056 | 2126 |
/// |
| 2057 | 2127 |
/// In the \ref lgf-format "LGF" file extra sections can be placed, |
| 2058 | 2128 |
/// which contain any data in arbitrary format. Such sections can be |
| 2059 | 2129 |
/// read with this class. A reading rule can be added to the class |
| 2060 | 2130 |
/// with two different functions. With the \c sectionLines() function a |
| 2061 | 2131 |
/// functor can process the section line-by-line, while with the \c |
| 2062 | 2132 |
/// sectionStream() member the section can be read from an input |
| 2063 | 2133 |
/// stream. |
| 2064 | 2134 |
class SectionReader {
|
| 2065 | 2135 |
private: |
| 2066 | 2136 |
|
| 2067 | 2137 |
std::istream* _is; |
| 2068 | 2138 |
bool local_is; |
| 2069 | 2139 |
std::string _filename; |
| 2070 | 2140 |
|
| 2071 | 2141 |
typedef std::map<std::string, _reader_bits::Section*> Sections; |
| 2072 | 2142 |
Sections _sections; |
| 2073 | 2143 |
|
| 2074 | 2144 |
int line_num; |
| 2075 | 2145 |
std::istringstream line; |
| 2076 | 2146 |
|
| 2077 | 2147 |
public: |
| 2078 | 2148 |
|
| 2079 | 2149 |
/// \brief Constructor |
| 2080 | 2150 |
/// |
| 2081 | 2151 |
/// Construct a section reader, which reads from the given input |
| 2082 | 2152 |
/// stream. |
| 2083 | 2153 |
SectionReader(std::istream& is) |
| 2084 | 2154 |
: _is(&is), local_is(false) {}
|
| 2085 | 2155 |
|
| 2086 | 2156 |
/// \brief Constructor |
| 2087 | 2157 |
/// |
| 2088 | 2158 |
/// Construct a section reader, which reads from the given file. |
| 2089 | 2159 |
SectionReader(const std::string& fn) |
| 2090 | 2160 |
: _is(new std::ifstream(fn.c_str())), local_is(true), |
| 2091 | 2161 |
_filename(fn) {
|
| 2092 | 2162 |
if (!(*_is)) {
|
| 2093 | 2163 |
delete _is; |
| 2094 | 2164 |
throw IoError("Cannot open file", fn);
|
| 2095 | 2165 |
} |
| 2096 | 2166 |
} |
| 2097 | 2167 |
|
| 2098 | 2168 |
/// \brief Constructor |
| 2099 | 2169 |
/// |
| 2100 | 2170 |
/// Construct a section reader, which reads from the given file. |
| 2101 | 2171 |
SectionReader(const char* fn) |
| 2102 | 2172 |
: _is(new std::ifstream(fn)), local_is(true), |
| 2103 | 2173 |
_filename(fn) {
|
| 2104 | 2174 |
if (!(*_is)) {
|
| 2105 | 2175 |
delete _is; |
| 2106 | 2176 |
throw IoError("Cannot open file", fn);
|
| 2107 | 2177 |
} |
| 2108 | 2178 |
} |
| 2109 | 2179 |
|
| 2110 | 2180 |
/// \brief Destructor |
| 2111 | 2181 |
~SectionReader() {
|
| 2112 | 2182 |
for (Sections::iterator it = _sections.begin(); |
| 2113 | 2183 |
it != _sections.end(); ++it) {
|
| 2114 | 2184 |
delete it->second; |
| 2115 | 2185 |
} |
| 2116 | 2186 |
|
| 2117 | 2187 |
if (local_is) {
|
| 2118 | 2188 |
delete _is; |
| 2119 | 2189 |
} |
| 2120 | 2190 |
|
| 2121 | 2191 |
} |
| 2122 | 2192 |
|
| 2123 | 2193 |
private: |
| 2124 | 2194 |
|
| 2125 | 2195 |
friend SectionReader sectionReader(std::istream& is); |
| 2126 | 2196 |
friend SectionReader sectionReader(const std::string& fn); |
| 2127 | 2197 |
friend SectionReader sectionReader(const char* fn); |
| 2128 | 2198 |
|
| 2129 | 2199 |
SectionReader(SectionReader& other) |
| 2130 | 2200 |
: _is(other._is), local_is(other.local_is) {
|
| 2131 | 2201 |
|
| 2132 | 2202 |
other._is = 0; |
| 2133 | 2203 |
other.local_is = false; |
| 2134 | 2204 |
|
| 2135 | 2205 |
_sections.swap(other._sections); |
| 2136 | 2206 |
} |
| 2137 | 2207 |
|
| 2138 | 2208 |
SectionReader& operator=(const SectionReader&); |
| 2139 | 2209 |
|
| 2140 | 2210 |
public: |
| 2141 | 2211 |
|
| 2142 |
/// \name Section |
|
| 2212 |
/// \name Section Readers |
|
| 2143 | 2213 |
/// @{
|
| 2144 | 2214 |
|
| 2145 | 2215 |
/// \brief Add a section processor with line oriented reading |
| 2146 | 2216 |
/// |
| 2147 | 2217 |
/// The first parameter is the type descriptor of the section, the |
| 2148 | 2218 |
/// second is a functor, which takes just one \c std::string |
| 2149 | 2219 |
/// parameter. At the reading process, each line of the section |
| 2150 | 2220 |
/// will be given to the functor object. However, the empty lines |
| 2151 | 2221 |
/// and the comment lines are filtered out, and the leading |
| 2152 | 2222 |
/// whitespaces are trimmed from each processed string. |
| 2153 | 2223 |
/// |
| 2154 | 2224 |
/// For example let's see a section, which contain several |
| 2155 | 2225 |
/// integers, which should be inserted into a vector. |
| 2156 | 2226 |
///\code |
| 2157 | 2227 |
/// @numbers |
| 2158 | 2228 |
/// 12 45 23 |
| 2159 | 2229 |
/// 4 |
| 2160 | 2230 |
/// 23 6 |
| 2161 | 2231 |
///\endcode |
| 2162 | 2232 |
/// |
| 2163 | 2233 |
/// The functor is implemented as a struct: |
| 2164 | 2234 |
///\code |
| 2165 | 2235 |
/// struct NumberSection {
|
| 2166 | 2236 |
/// std::vector<int>& _data; |
| 2167 | 2237 |
/// NumberSection(std::vector<int>& data) : _data(data) {}
|
| 2168 | 2238 |
/// void operator()(const std::string& line) {
|
| 2169 | 2239 |
/// std::istringstream ls(line); |
| 2170 | 2240 |
/// int value; |
| 2171 | 2241 |
/// while (ls >> value) _data.push_back(value); |
| 2172 | 2242 |
/// } |
| 2173 | 2243 |
/// }; |
| 2174 | 2244 |
/// |
| 2175 | 2245 |
/// // ... |
| 2176 | 2246 |
/// |
| 2177 | 2247 |
/// reader.sectionLines("numbers", NumberSection(vec));
|
| 2178 | 2248 |
///\endcode |
| 2179 | 2249 |
template <typename Functor> |
| 2180 | 2250 |
SectionReader& sectionLines(const std::string& type, Functor functor) {
|
| 2181 | 2251 |
LEMON_ASSERT(!type.empty(), "Type is empty."); |
| 2182 | 2252 |
LEMON_ASSERT(_sections.find(type) == _sections.end(), |
| 2183 | 2253 |
"Multiple reading of section."); |
| 2184 | 2254 |
_sections.insert(std::make_pair(type, |
| 2185 | 2255 |
new _reader_bits::LineSection<Functor>(functor))); |
| 2186 | 2256 |
return *this; |
| 2187 | 2257 |
} |
| 2188 | 2258 |
|
| 2189 | 2259 |
|
| 2190 | 2260 |
/// \brief Add a section processor with stream oriented reading |
| 2191 | 2261 |
/// |
| 2192 | 2262 |
/// The first parameter is the type of the section, the second is |
| 2193 | 2263 |
/// a functor, which takes an \c std::istream& and an \c int& |
| 2194 | 2264 |
/// parameter, the latter regard to the line number of stream. The |
| 2195 | 2265 |
/// functor can read the input while the section go on, and the |
| 2196 | 2266 |
/// line number should be modified accordingly. |
| 2197 | 2267 |
template <typename Functor> |
| 2198 | 2268 |
SectionReader& sectionStream(const std::string& type, Functor functor) {
|
| 2199 | 2269 |
LEMON_ASSERT(!type.empty(), "Type is empty."); |
| 2200 | 2270 |
LEMON_ASSERT(_sections.find(type) == _sections.end(), |
| 2201 | 2271 |
"Multiple reading of section."); |
| 2202 | 2272 |
_sections.insert(std::make_pair(type, |
| 2203 | 2273 |
new _reader_bits::StreamSection<Functor>(functor))); |
| 2204 | 2274 |
return *this; |
| 2205 | 2275 |
} |
| 2206 | 2276 |
|
| 2207 | 2277 |
/// @} |
| 2208 | 2278 |
|
| 2209 | 2279 |
private: |
| 2210 | 2280 |
|
| 2211 | 2281 |
bool readLine() {
|
| 2212 | 2282 |
std::string str; |
| 2213 | 2283 |
while(++line_num, std::getline(*_is, str)) {
|
| 2214 | 2284 |
line.clear(); line.str(str); |
| 2215 | 2285 |
char c; |
| 2216 | 2286 |
if (line >> std::ws >> c && c != '#') {
|
| 2217 | 2287 |
line.putback(c); |
| 2218 | 2288 |
return true; |
| 2219 | 2289 |
} |
| 2220 | 2290 |
} |
| 2221 | 2291 |
return false; |
| 2222 | 2292 |
} |
| 2223 | 2293 |
|
| 2224 | 2294 |
bool readSuccess() {
|
| 2225 | 2295 |
return static_cast<bool>(*_is); |
| 2226 | 2296 |
} |
| 2227 | 2297 |
|
| 2228 | 2298 |
void skipSection() {
|
| 2229 | 2299 |
char c; |
| 2230 | 2300 |
while (readSuccess() && line >> c && c != '@') {
|
| 2231 | 2301 |
readLine(); |
| 2232 | 2302 |
} |
| 2233 | 2303 |
if (readSuccess()) {
|
| 2234 | 2304 |
line.putback(c); |
| 2235 | 2305 |
} |
| 2236 | 2306 |
} |
| 2237 | 2307 |
|
| 2238 | 2308 |
public: |
| 2239 | 2309 |
|
| 2240 | 2310 |
|
| 2241 |
/// \name Execution of the |
|
| 2311 |
/// \name Execution of the Reader |
|
| 2242 | 2312 |
/// @{
|
| 2243 | 2313 |
|
| 2244 | 2314 |
/// \brief Start the batch processing |
| 2245 | 2315 |
/// |
| 2246 | 2316 |
/// This function starts the batch processing. |
| 2247 | 2317 |
void run() {
|
| 2248 | 2318 |
|
| 2249 | 2319 |
LEMON_ASSERT(_is != 0, "This reader assigned to an other reader"); |
| 2250 | 2320 |
|
| 2251 | 2321 |
std::set<std::string> extra_sections; |
| 2252 | 2322 |
|
| 2253 | 2323 |
line_num = 0; |
| 2254 | 2324 |
readLine(); |
| 2255 | 2325 |
skipSection(); |
| 2256 | 2326 |
|
| 2257 | 2327 |
while (readSuccess()) {
|
| 2258 | 2328 |
try {
|
| 2259 | 2329 |
char c; |
| 2260 | 2330 |
std::string section, caption; |
| 2261 | 2331 |
line >> c; |
| 2262 | 2332 |
_reader_bits::readToken(line, section); |
| 2263 | 2333 |
_reader_bits::readToken(line, caption); |
| 2264 | 2334 |
|
| 2265 | 2335 |
if (line >> c) |
| 2266 | 2336 |
throw FormatError("Extra character at the end of line");
|
| 2267 | 2337 |
|
| 2268 | 2338 |
if (extra_sections.find(section) != extra_sections.end()) {
|
| 2269 | 2339 |
std::ostringstream msg; |
| 2270 | 2340 |
msg << "Multiple occurence of section: " << section; |
| 2271 | 2341 |
throw FormatError(msg.str()); |
| 2272 | 2342 |
} |
| 2273 | 2343 |
Sections::iterator it = _sections.find(section); |
| 2274 | 2344 |
if (it != _sections.end()) {
|
| 2275 | 2345 |
extra_sections.insert(section); |
| 2276 | 2346 |
it->second->process(*_is, line_num); |
| 2277 | 2347 |
} |
| 2278 | 2348 |
readLine(); |
| 2279 | 2349 |
skipSection(); |
| 2280 | 2350 |
} catch (FormatError& error) {
|
| 2281 | 2351 |
error.line(line_num); |
| 2282 | 2352 |
error.file(_filename); |
| 2283 | 2353 |
throw; |
| 2284 | 2354 |
} |
| 2285 | 2355 |
} |
| 2286 | 2356 |
for (Sections::iterator it = _sections.begin(); |
| 2287 | 2357 |
it != _sections.end(); ++it) {
|
| 2288 | 2358 |
if (extra_sections.find(it->first) == extra_sections.end()) {
|
| 2289 | 2359 |
std::ostringstream os; |
| 2290 | 2360 |
os << "Cannot find section: " << it->first; |
| 2291 | 2361 |
throw FormatError(os.str()); |
| 2292 | 2362 |
} |
| 2293 | 2363 |
} |
| 2294 | 2364 |
} |
| 2295 | 2365 |
|
| 2296 | 2366 |
/// @} |
| 2297 | 2367 |
|
| 2298 | 2368 |
}; |
| 2299 | 2369 |
|
| 2370 |
/// \ingroup lemon_io |
|
| 2371 |
/// |
|
| 2372 |
/// \brief Return a \ref SectionReader class |
|
| 2373 |
/// |
|
| 2374 |
/// This function just returns a \ref SectionReader class. |
|
| 2375 |
/// |
|
| 2376 |
/// Please see SectionReader documentation about the custom section |
|
| 2377 |
/// input. |
|
| 2378 |
/// |
|
| 2379 |
/// \relates SectionReader |
|
| 2380 |
/// \sa sectionReader(const std::string& fn) |
|
| 2381 |
/// \sa sectionReader(const char *fn) |
|
| 2382 |
inline SectionReader sectionReader(std::istream& is) {
|
|
| 2383 |
SectionReader tmp(is); |
|
| 2384 |
return tmp; |
|
| 2385 |
} |
|
| 2386 |
|
|
| 2300 | 2387 |
/// \brief Return a \ref SectionReader class |
| 2301 | 2388 |
/// |
| 2302 | 2389 |
/// This function just returns a \ref SectionReader class. |
| 2303 | 2390 |
/// \relates SectionReader |
| 2304 |
inline SectionReader sectionReader(std::istream& is) {
|
|
| 2305 |
SectionReader tmp(is); |
|
| 2391 |
/// \sa sectionReader(std::istream& is) |
|
| 2392 |
inline SectionReader sectionReader(const std::string& fn) {
|
|
| 2393 |
SectionReader tmp(fn); |
|
| 2306 | 2394 |
return tmp; |
| 2307 | 2395 |
} |
| 2308 | 2396 |
|
| 2309 | 2397 |
/// \brief Return a \ref SectionReader class |
| 2310 | 2398 |
/// |
| 2311 | 2399 |
/// This function just returns a \ref SectionReader class. |
| 2312 | 2400 |
/// \relates SectionReader |
| 2313 |
inline SectionReader sectionReader(const std::string& fn) {
|
|
| 2314 |
SectionReader tmp(fn); |
|
| 2315 |
return tmp; |
|
| 2316 |
} |
|
| 2317 |
|
|
| 2318 |
/// \brief Return a \ref SectionReader class |
|
| 2319 |
/// |
|
| 2320 |
/// This function just returns a \ref SectionReader class. |
|
| 2321 |
/// \ |
|
| 2401 |
/// \sa sectionReader(std::istream& is) |
|
| 2322 | 2402 |
inline SectionReader sectionReader(const char* fn) {
|
| 2323 | 2403 |
SectionReader tmp(fn); |
| 2324 | 2404 |
return tmp; |
| 2325 | 2405 |
} |
| 2326 | 2406 |
|
| 2327 | 2407 |
/// \ingroup lemon_io |
| 2328 | 2408 |
/// |
| 2329 | 2409 |
/// \brief Reader for the contents of the \ref lgf-format "LGF" file |
| 2330 | 2410 |
/// |
| 2331 | 2411 |
/// This class can be used to read the sections, the map names and |
| 2332 | 2412 |
/// the attributes from a file. Usually, the LEMON programs know |
| 2333 | 2413 |
/// that, which type of graph, which maps and which attributes |
| 2334 | 2414 |
/// should be read from a file, but in general tools (like glemon) |
| 2335 | 2415 |
/// the contents of an LGF file should be guessed somehow. This class |
| 2336 | 2416 |
/// reads the graph and stores the appropriate information for |
| 2337 | 2417 |
/// reading the graph. |
| 2338 | 2418 |
/// |
| 2339 | 2419 |
///\code |
| 2340 | 2420 |
/// LgfContents contents("graph.lgf");
|
| 2341 | 2421 |
/// contents.run(); |
| 2342 | 2422 |
/// |
| 2343 | 2423 |
/// // Does it contain any node section and arc section? |
| 2344 | 2424 |
/// if (contents.nodeSectionNum() == 0 || contents.arcSectionNum()) {
|
| 2345 | 2425 |
/// std::cerr << "Failure, cannot find graph." << std::endl; |
| 2346 | 2426 |
/// return -1; |
| 2347 | 2427 |
/// } |
| 2348 | 2428 |
/// std::cout << "The name of the default node section: " |
| 2349 | 2429 |
/// << contents.nodeSection(0) << std::endl; |
| 2350 | 2430 |
/// std::cout << "The number of the arc maps: " |
| 2351 | 2431 |
/// << contents.arcMaps(0).size() << std::endl; |
| 2352 | 2432 |
/// std::cout << "The name of second arc map: " |
| 2353 | 2433 |
/// << contents.arcMaps(0)[1] << std::endl; |
| 2354 | 2434 |
///\endcode |
| 2355 | 2435 |
class LgfContents {
|
| 2356 | 2436 |
private: |
| 2357 | 2437 |
|
| 2358 | 2438 |
std::istream* _is; |
| 2359 | 2439 |
bool local_is; |
| 2360 | 2440 |
|
| 2361 | 2441 |
std::vector<std::string> _node_sections; |
| 2362 | 2442 |
std::vector<std::string> _edge_sections; |
| 2363 | 2443 |
std::vector<std::string> _attribute_sections; |
| 2364 | 2444 |
std::vector<std::string> _extra_sections; |
| 2365 | 2445 |
|
| 2366 | 2446 |
std::vector<bool> _arc_sections; |
| 2367 | 2447 |
|
| 2368 | 2448 |
std::vector<std::vector<std::string> > _node_maps; |
| 2369 | 2449 |
std::vector<std::vector<std::string> > _edge_maps; |
| 2370 | 2450 |
|
| 2371 | 2451 |
std::vector<std::vector<std::string> > _attributes; |
| 2372 | 2452 |
|
| 2373 | 2453 |
|
| 2374 | 2454 |
int line_num; |
| 2375 | 2455 |
std::istringstream line; |
| 2376 | 2456 |
|
| 2377 | 2457 |
public: |
| 2378 | 2458 |
|
| 2379 | 2459 |
/// \brief Constructor |
| 2380 | 2460 |
/// |
| 2381 | 2461 |
/// Construct an \e LGF contents reader, which reads from the given |
| 2382 | 2462 |
/// input stream. |
| 2383 | 2463 |
LgfContents(std::istream& is) |
| 2384 | 2464 |
: _is(&is), local_is(false) {}
|
| 2385 | 2465 |
|
| 2386 | 2466 |
/// \brief Constructor |
| 2387 | 2467 |
/// |
| 2388 | 2468 |
/// Construct an \e LGF contents reader, which reads from the given |
| 2389 | 2469 |
/// file. |
| 2390 | 2470 |
LgfContents(const std::string& fn) |
| 2391 | 2471 |
: _is(new std::ifstream(fn.c_str())), local_is(true) {
|
| 2392 | 2472 |
if (!(*_is)) {
|
| 2393 | 2473 |
delete _is; |
| 2394 | 2474 |
throw IoError("Cannot open file", fn);
|
| 2395 | 2475 |
} |
| 2396 | 2476 |
} |
| 2397 | 2477 |
|
| 2398 | 2478 |
/// \brief Constructor |
| 2399 | 2479 |
/// |
| 2400 | 2480 |
/// Construct an \e LGF contents reader, which reads from the given |
| 2401 | 2481 |
/// file. |
| 2402 | 2482 |
LgfContents(const char* fn) |
| 2403 | 2483 |
: _is(new std::ifstream(fn)), local_is(true) {
|
| 2404 | 2484 |
if (!(*_is)) {
|
| 2405 | 2485 |
delete _is; |
| 2406 | 2486 |
throw IoError("Cannot open file", fn);
|
| 2407 | 2487 |
} |
| 2408 | 2488 |
} |
| 2409 | 2489 |
|
| 2410 | 2490 |
/// \brief Destructor |
| 2411 | 2491 |
~LgfContents() {
|
| 2412 | 2492 |
if (local_is) delete _is; |
| 2413 | 2493 |
} |
| 2414 | 2494 |
|
| 2415 | 2495 |
private: |
| 2416 | 2496 |
|
| 2417 | 2497 |
LgfContents(const LgfContents&); |
| 2418 | 2498 |
LgfContents& operator=(const LgfContents&); |
| 2419 | 2499 |
|
| 2420 | 2500 |
public: |
| 2421 | 2501 |
|
| 2422 | 2502 |
|
| 2423 |
/// \name Node |
|
| 2503 |
/// \name Node Sections |
|
| 2424 | 2504 |
/// @{
|
| 2425 | 2505 |
|
| 2426 | 2506 |
/// \brief Gives back the number of node sections in the file. |
| 2427 | 2507 |
/// |
| 2428 | 2508 |
/// Gives back the number of node sections in the file. |
| 2429 | 2509 |
int nodeSectionNum() const {
|
| 2430 | 2510 |
return _node_sections.size(); |
| 2431 | 2511 |
} |
| 2432 | 2512 |
|
| 2433 | 2513 |
/// \brief Returns the node section name at the given position. |
| 2434 | 2514 |
/// |
| 2435 | 2515 |
/// Returns the node section name at the given position. |
| 2436 | 2516 |
const std::string& nodeSection(int i) const {
|
| 2437 | 2517 |
return _node_sections[i]; |
| 2438 | 2518 |
} |
| 2439 | 2519 |
|
| 2440 | 2520 |
/// \brief Gives back the node maps for the given section. |
| 2441 | 2521 |
/// |
| 2442 | 2522 |
/// Gives back the node maps for the given section. |
| 2443 | 2523 |
const std::vector<std::string>& nodeMapNames(int i) const {
|
| 2444 | 2524 |
return _node_maps[i]; |
| 2445 | 2525 |
} |
| 2446 | 2526 |
|
| 2447 | 2527 |
/// @} |
| 2448 | 2528 |
|
| 2449 |
/// \name Arc/Edge |
|
| 2529 |
/// \name Arc/Edge Sections |
|
| 2450 | 2530 |
/// @{
|
| 2451 | 2531 |
|
| 2452 | 2532 |
/// \brief Gives back the number of arc/edge sections in the file. |
| 2453 | 2533 |
/// |
| 2454 | 2534 |
/// Gives back the number of arc/edge sections in the file. |
| 2455 | 2535 |
/// \note It is synonym of \c edgeSectionNum(). |
| 2456 | 2536 |
int arcSectionNum() const {
|
| 2457 | 2537 |
return _edge_sections.size(); |
| 2458 | 2538 |
} |
| 2459 | 2539 |
|
| 2460 | 2540 |
/// \brief Returns the arc/edge section name at the given position. |
| 2461 | 2541 |
/// |
| 2462 | 2542 |
/// Returns the arc/edge section name at the given position. |
| 2463 | 2543 |
/// \note It is synonym of \c edgeSection(). |
| 2464 | 2544 |
const std::string& arcSection(int i) const {
|
| 2465 | 2545 |
return _edge_sections[i]; |
| 2466 | 2546 |
} |
| 2467 | 2547 |
|
| 2468 | 2548 |
/// \brief Gives back the arc/edge maps for the given section. |
| 2469 | 2549 |
/// |
| 2470 | 2550 |
/// Gives back the arc/edge maps for the given section. |
| 2471 | 2551 |
/// \note It is synonym of \c edgeMapNames(). |
| 2472 | 2552 |
const std::vector<std::string>& arcMapNames(int i) const {
|
| 2473 | 2553 |
return _edge_maps[i]; |
| 2474 | 2554 |
} |
| 2475 | 2555 |
|
| 2476 | 2556 |
/// @} |
| 2477 | 2557 |
|
| 2478 | 2558 |
/// \name Synonyms |
| 2479 | 2559 |
/// @{
|
| 2480 | 2560 |
|
| 2481 | 2561 |
/// \brief Gives back the number of arc/edge sections in the file. |
| 2482 | 2562 |
/// |
| 2483 | 2563 |
/// Gives back the number of arc/edge sections in the file. |
| 2484 | 2564 |
/// \note It is synonym of \c arcSectionNum(). |
| 2485 | 2565 |
int edgeSectionNum() const {
|
| 2486 | 2566 |
return _edge_sections.size(); |
| 2487 | 2567 |
} |
| 2488 | 2568 |
|
| 2489 | 2569 |
/// \brief Returns the section name at the given position. |
| 2490 | 2570 |
/// |
| 2491 | 2571 |
/// Returns the section name at the given position. |
| 2492 | 2572 |
/// \note It is synonym of \c arcSection(). |
| 2493 | 2573 |
const std::string& edgeSection(int i) const {
|
| 2494 | 2574 |
return _edge_sections[i]; |
| 2495 | 2575 |
} |
| 2496 | 2576 |
|
| 2497 | 2577 |
/// \brief Gives back the edge maps for the given section. |
| 2498 | 2578 |
/// |
| 2499 | 2579 |
/// Gives back the edge maps for the given section. |
| 2500 | 2580 |
/// \note It is synonym of \c arcMapNames(). |
| 2501 | 2581 |
const std::vector<std::string>& edgeMapNames(int i) const {
|
| 2502 | 2582 |
return _edge_maps[i]; |
| 2503 | 2583 |
} |
| 2504 | 2584 |
|
| 2505 | 2585 |
/// @} |
| 2506 | 2586 |
|
| 2507 |
/// \name Attribute |
|
| 2587 |
/// \name Attribute Sections |
|
| 2508 | 2588 |
/// @{
|
| 2509 | 2589 |
|
| 2510 | 2590 |
/// \brief Gives back the number of attribute sections in the file. |
| 2511 | 2591 |
/// |
| 2512 | 2592 |
/// Gives back the number of attribute sections in the file. |
| 2513 | 2593 |
int attributeSectionNum() const {
|
| 2514 | 2594 |
return _attribute_sections.size(); |
| 2515 | 2595 |
} |
| 2516 | 2596 |
|
| 2517 | 2597 |
/// \brief Returns the attribute section name at the given position. |
| 2518 | 2598 |
/// |
| 2519 | 2599 |
/// Returns the attribute section name at the given position. |
| 2520 | 2600 |
const std::string& attributeSectionNames(int i) const {
|
| 2521 | 2601 |
return _attribute_sections[i]; |
| 2522 | 2602 |
} |
| 2523 | 2603 |
|
| 2524 | 2604 |
/// \brief Gives back the attributes for the given section. |
| 2525 | 2605 |
/// |
| 2526 | 2606 |
/// Gives back the attributes for the given section. |
| 2527 | 2607 |
const std::vector<std::string>& attributes(int i) const {
|
| 2528 | 2608 |
return _attributes[i]; |
| 2529 | 2609 |
} |
| 2530 | 2610 |
|
| 2531 | 2611 |
/// @} |
| 2532 | 2612 |
|
| 2533 |
/// \name Extra |
|
| 2613 |
/// \name Extra Sections |
|
| 2534 | 2614 |
/// @{
|
| 2535 | 2615 |
|
| 2536 | 2616 |
/// \brief Gives back the number of extra sections in the file. |
| 2537 | 2617 |
/// |
| 2538 | 2618 |
/// Gives back the number of extra sections in the file. |
| 2539 | 2619 |
int extraSectionNum() const {
|
| 2540 | 2620 |
return _extra_sections.size(); |
| 2541 | 2621 |
} |
| 2542 | 2622 |
|
| 2543 | 2623 |
/// \brief Returns the extra section type at the given position. |
| 2544 | 2624 |
/// |
| 2545 | 2625 |
/// Returns the section type at the given position. |
| 2546 | 2626 |
const std::string& extraSection(int i) const {
|
| 2547 | 2627 |
return _extra_sections[i]; |
| 2548 | 2628 |
} |
| 2549 | 2629 |
|
| 2550 | 2630 |
/// @} |
| 2551 | 2631 |
|
| 2552 | 2632 |
private: |
| 2553 | 2633 |
|
| 2554 | 2634 |
bool readLine() {
|
| 2555 | 2635 |
std::string str; |
| 2556 | 2636 |
while(++line_num, std::getline(*_is, str)) {
|
| 2557 | 2637 |
line.clear(); line.str(str); |
| 2558 | 2638 |
char c; |
| 2559 | 2639 |
if (line >> std::ws >> c && c != '#') {
|
| 2560 | 2640 |
line.putback(c); |
| 2561 | 2641 |
return true; |
| 2562 | 2642 |
} |
| 2563 | 2643 |
} |
| 2564 | 2644 |
return false; |
| 2565 | 2645 |
} |
| 2566 | 2646 |
|
| 2567 | 2647 |
bool readSuccess() {
|
| 2568 | 2648 |
return static_cast<bool>(*_is); |
| 2569 | 2649 |
} |
| 2570 | 2650 |
|
| 2571 | 2651 |
void skipSection() {
|
| 2572 | 2652 |
char c; |
| 2573 | 2653 |
while (readSuccess() && line >> c && c != '@') {
|
| 2574 | 2654 |
readLine(); |
| 2575 | 2655 |
} |
| 2576 | 2656 |
if (readSuccess()) {
|
| 2577 | 2657 |
line.putback(c); |
| 2578 | 2658 |
} |
| 2579 | 2659 |
} |
| 2580 | 2660 |
|
| 2581 | 2661 |
void readMaps(std::vector<std::string>& maps) {
|
| 2582 | 2662 |
char c; |
| 2583 | 2663 |
if (!readLine() || !(line >> c) || c == '@') {
|
| 2584 | 2664 |
if (readSuccess() && line) line.putback(c); |
| 2585 | 2665 |
return; |
| 2586 | 2666 |
} |
| 2587 | 2667 |
line.putback(c); |
| 2588 | 2668 |
std::string map; |
| 2589 | 2669 |
while (_reader_bits::readToken(line, map)) {
|
| 2590 | 2670 |
maps.push_back(map); |
| 2591 | 2671 |
} |
| 2592 | 2672 |
} |
| 2593 | 2673 |
|
| 2594 | 2674 |
void readAttributes(std::vector<std::string>& attrs) {
|
| 2595 | 2675 |
readLine(); |
| 2596 | 2676 |
char c; |
| 2597 | 2677 |
while (readSuccess() && line >> c && c != '@') {
|
| 2598 | 2678 |
line.putback(c); |
| 2599 | 2679 |
std::string attr; |
| 2600 | 2680 |
_reader_bits::readToken(line, attr); |
| 2601 | 2681 |
attrs.push_back(attr); |
| 2602 | 2682 |
readLine(); |
| 2603 | 2683 |
} |
| 2604 | 2684 |
line.putback(c); |
| 2605 | 2685 |
} |
| 2606 | 2686 |
|
| 2607 | 2687 |
public: |
| 2608 | 2688 |
|
| 2609 |
/// \name Execution of the |
|
| 2689 |
/// \name Execution of the Contents Reader |
|
| 2610 | 2690 |
/// @{
|
| 2611 | 2691 |
|
| 2612 | 2692 |
/// \brief Starts the reading |
| 2613 | 2693 |
/// |
| 2614 | 2694 |
/// This function starts the reading. |
| 2615 | 2695 |
void run() {
|
| 2616 | 2696 |
|
| 2617 | 2697 |
readLine(); |
| 2618 | 2698 |
skipSection(); |
| 2619 | 2699 |
|
| 2620 | 2700 |
while (readSuccess()) {
|
| 2621 | 2701 |
|
| 2622 | 2702 |
char c; |
| 2623 | 2703 |
line >> c; |
| 2624 | 2704 |
|
| 2625 | 2705 |
std::string section, caption; |
| 2626 | 2706 |
_reader_bits::readToken(line, section); |
| 2627 | 2707 |
_reader_bits::readToken(line, caption); |
| 2628 | 2708 |
|
| 2629 | 2709 |
if (section == "nodes") {
|
| 2630 | 2710 |
_node_sections.push_back(caption); |
| 2631 | 2711 |
_node_maps.push_back(std::vector<std::string>()); |
| 2632 | 2712 |
readMaps(_node_maps.back()); |
| 2633 | 2713 |
readLine(); skipSection(); |
| 2634 | 2714 |
} else if (section == "arcs" || section == "edges") {
|
| 2635 | 2715 |
_edge_sections.push_back(caption); |
| 2636 | 2716 |
_arc_sections.push_back(section == "arcs"); |
| 2637 | 2717 |
_edge_maps.push_back(std::vector<std::string>()); |
| 2638 | 2718 |
readMaps(_edge_maps.back()); |
| 2639 | 2719 |
readLine(); skipSection(); |
| 2640 | 2720 |
} else if (section == "attributes") {
|
| 2641 | 2721 |
_attribute_sections.push_back(caption); |
| 2642 | 2722 |
_attributes.push_back(std::vector<std::string>()); |
| 2643 | 2723 |
readAttributes(_attributes.back()); |
| 2644 | 2724 |
} else {
|
| 2645 | 2725 |
_extra_sections.push_back(section); |
| 2646 | 2726 |
readLine(); skipSection(); |
| 2647 | 2727 |
} |
| 2648 | 2728 |
} |
| 2649 | 2729 |
} |
| 2650 | 2730 |
|
| 2651 | 2731 |
/// @} |
| 2652 | 2732 |
|
| 2653 | 2733 |
}; |
| 2654 | 2734 |
} |
| 2655 | 2735 |
|
| 2656 | 2736 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
///\ingroup lemon_io |
| 20 | 20 |
///\file |
| 21 | 21 |
///\brief \ref lgf-format "LEMON Graph Format" writer. |
| 22 | 22 |
|
| 23 | 23 |
|
| 24 | 24 |
#ifndef LEMON_LGF_WRITER_H |
| 25 | 25 |
#define LEMON_LGF_WRITER_H |
| 26 | 26 |
|
| 27 | 27 |
#include <iostream> |
| 28 | 28 |
#include <fstream> |
| 29 | 29 |
#include <sstream> |
| 30 | 30 |
|
| 31 | 31 |
#include <algorithm> |
| 32 | 32 |
|
| 33 | 33 |
#include <vector> |
| 34 | 34 |
#include <functional> |
| 35 | 35 |
|
| 36 | 36 |
#include <lemon/core.h> |
| 37 | 37 |
#include <lemon/maps.h> |
| 38 | 38 |
|
| 39 | 39 |
#include <lemon/concept_check.h> |
| 40 | 40 |
#include <lemon/concepts/maps.h> |
| 41 | 41 |
|
| 42 | 42 |
namespace lemon {
|
| 43 | 43 |
|
| 44 | 44 |
namespace _writer_bits {
|
| 45 | 45 |
|
| 46 | 46 |
template <typename Value> |
| 47 | 47 |
struct DefaultConverter {
|
| 48 | 48 |
std::string operator()(const Value& value) {
|
| 49 | 49 |
std::ostringstream os; |
| 50 | 50 |
os << value; |
| 51 | 51 |
return os.str(); |
| 52 | 52 |
} |
| 53 | 53 |
}; |
| 54 | 54 |
|
| 55 | 55 |
template <typename T> |
| 56 | 56 |
bool operator<(const T&, const T&) {
|
| 57 | 57 |
throw FormatError("Label map is not comparable");
|
| 58 | 58 |
} |
| 59 | 59 |
|
| 60 | 60 |
template <typename _Map> |
| 61 | 61 |
class MapLess {
|
| 62 | 62 |
public: |
| 63 | 63 |
typedef _Map Map; |
| 64 | 64 |
typedef typename Map::Key Item; |
| 65 | 65 |
|
| 66 | 66 |
private: |
| 67 | 67 |
const Map& _map; |
| 68 | 68 |
|
| 69 | 69 |
public: |
| 70 | 70 |
MapLess(const Map& map) : _map(map) {}
|
| 71 | 71 |
|
| 72 | 72 |
bool operator()(const Item& left, const Item& right) {
|
| 73 | 73 |
return _map[left] < _map[right]; |
| 74 | 74 |
} |
| 75 | 75 |
}; |
| 76 | 76 |
|
| 77 | 77 |
template <typename _Graph, bool _dir, typename _Map> |
| 78 | 78 |
class GraphArcMapLess {
|
| 79 | 79 |
public: |
| 80 | 80 |
typedef _Map Map; |
| 81 | 81 |
typedef _Graph Graph; |
| 82 | 82 |
typedef typename Graph::Edge Item; |
| 83 | 83 |
|
| 84 | 84 |
private: |
| 85 | 85 |
const Graph& _graph; |
| 86 | 86 |
const Map& _map; |
| 87 | 87 |
|
| 88 | 88 |
public: |
| 89 | 89 |
GraphArcMapLess(const Graph& graph, const Map& map) |
| 90 | 90 |
: _graph(graph), _map(map) {}
|
| 91 | 91 |
|
| 92 | 92 |
bool operator()(const Item& left, const Item& right) {
|
| 93 | 93 |
return _map[_graph.direct(left, _dir)] < |
| 94 | 94 |
_map[_graph.direct(right, _dir)]; |
| 95 | 95 |
} |
| 96 | 96 |
}; |
| 97 | 97 |
|
| 98 | 98 |
template <typename _Item> |
| 99 | 99 |
class MapStorageBase {
|
| 100 | 100 |
public: |
| 101 | 101 |
typedef _Item Item; |
| 102 | 102 |
|
| 103 | 103 |
public: |
| 104 | 104 |
MapStorageBase() {}
|
| 105 | 105 |
virtual ~MapStorageBase() {}
|
| 106 | 106 |
|
| 107 | 107 |
virtual std::string get(const Item& item) = 0; |
| 108 | 108 |
virtual void sort(std::vector<Item>&) = 0; |
| 109 | 109 |
}; |
| 110 | 110 |
|
| 111 | 111 |
template <typename _Item, typename _Map, |
| 112 | 112 |
typename _Converter = DefaultConverter<typename _Map::Value> > |
| 113 | 113 |
class MapStorage : public MapStorageBase<_Item> {
|
| 114 | 114 |
public: |
| 115 | 115 |
typedef _Map Map; |
| 116 | 116 |
typedef _Converter Converter; |
| 117 | 117 |
typedef _Item Item; |
| 118 | 118 |
|
| 119 | 119 |
private: |
| 120 | 120 |
const Map& _map; |
| 121 | 121 |
Converter _converter; |
| 122 | 122 |
|
| 123 | 123 |
public: |
| 124 | 124 |
MapStorage(const Map& map, const Converter& converter = Converter()) |
| 125 | 125 |
: _map(map), _converter(converter) {}
|
| 126 | 126 |
virtual ~MapStorage() {}
|
| 127 | 127 |
|
| 128 | 128 |
virtual std::string get(const Item& item) {
|
| 129 | 129 |
return _converter(_map[item]); |
| 130 | 130 |
} |
| 131 | 131 |
virtual void sort(std::vector<Item>& items) {
|
| 132 | 132 |
MapLess<Map> less(_map); |
| 133 | 133 |
std::sort(items.begin(), items.end(), less); |
| 134 | 134 |
} |
| 135 | 135 |
}; |
| 136 | 136 |
|
| 137 | 137 |
template <typename _Graph, bool _dir, typename _Map, |
| 138 | 138 |
typename _Converter = DefaultConverter<typename _Map::Value> > |
| 139 | 139 |
class GraphArcMapStorage : public MapStorageBase<typename _Graph::Edge> {
|
| 140 | 140 |
public: |
| 141 | 141 |
typedef _Map Map; |
| 142 | 142 |
typedef _Converter Converter; |
| 143 | 143 |
typedef _Graph Graph; |
| 144 | 144 |
typedef typename Graph::Edge Item; |
| 145 | 145 |
static const bool dir = _dir; |
| 146 | 146 |
|
| 147 | 147 |
private: |
| 148 | 148 |
const Graph& _graph; |
| 149 | 149 |
const Map& _map; |
| 150 | 150 |
Converter _converter; |
| 151 | 151 |
|
| 152 | 152 |
public: |
| 153 | 153 |
GraphArcMapStorage(const Graph& graph, const Map& map, |
| 154 | 154 |
const Converter& converter = Converter()) |
| 155 | 155 |
: _graph(graph), _map(map), _converter(converter) {}
|
| 156 | 156 |
virtual ~GraphArcMapStorage() {}
|
| 157 | 157 |
|
| 158 | 158 |
virtual std::string get(const Item& item) {
|
| 159 | 159 |
return _converter(_map[_graph.direct(item, dir)]); |
| 160 | 160 |
} |
| 161 | 161 |
virtual void sort(std::vector<Item>& items) {
|
| 162 | 162 |
GraphArcMapLess<Graph, dir, Map> less(_graph, _map); |
| 163 | 163 |
std::sort(items.begin(), items.end(), less); |
| 164 | 164 |
} |
| 165 | 165 |
}; |
| 166 | 166 |
|
| 167 | 167 |
class ValueStorageBase {
|
| 168 | 168 |
public: |
| 169 | 169 |
ValueStorageBase() {}
|
| 170 | 170 |
virtual ~ValueStorageBase() {}
|
| 171 | 171 |
|
| 172 | 172 |
virtual std::string get() = 0; |
| 173 | 173 |
}; |
| 174 | 174 |
|
| 175 | 175 |
template <typename _Value, typename _Converter = DefaultConverter<_Value> > |
| 176 | 176 |
class ValueStorage : public ValueStorageBase {
|
| 177 | 177 |
public: |
| 178 | 178 |
typedef _Value Value; |
| 179 | 179 |
typedef _Converter Converter; |
| 180 | 180 |
|
| 181 | 181 |
private: |
| 182 | 182 |
const Value& _value; |
| 183 | 183 |
Converter _converter; |
| 184 | 184 |
|
| 185 | 185 |
public: |
| 186 | 186 |
ValueStorage(const Value& value, const Converter& converter = Converter()) |
| 187 | 187 |
: _value(value), _converter(converter) {}
|
| 188 | 188 |
|
| 189 | 189 |
virtual std::string get() {
|
| 190 | 190 |
return _converter(_value); |
| 191 | 191 |
} |
| 192 | 192 |
}; |
| 193 | 193 |
|
| 194 | 194 |
template <typename Value> |
| 195 | 195 |
struct MapLookUpConverter {
|
| 196 | 196 |
const std::map<Value, std::string>& _map; |
| 197 | 197 |
|
| 198 | 198 |
MapLookUpConverter(const std::map<Value, std::string>& map) |
| 199 | 199 |
: _map(map) {}
|
| 200 | 200 |
|
| 201 | 201 |
std::string operator()(const Value& str) {
|
| 202 | 202 |
typename std::map<Value, std::string>::const_iterator it = |
| 203 | 203 |
_map.find(str); |
| 204 | 204 |
if (it == _map.end()) {
|
| 205 | 205 |
throw FormatError("Item not found");
|
| 206 | 206 |
} |
| 207 | 207 |
return it->second; |
| 208 | 208 |
} |
| 209 | 209 |
}; |
| 210 | 210 |
|
| 211 | 211 |
template <typename Graph> |
| 212 | 212 |
struct GraphArcLookUpConverter {
|
| 213 | 213 |
const Graph& _graph; |
| 214 | 214 |
const std::map<typename Graph::Edge, std::string>& _map; |
| 215 | 215 |
|
| 216 | 216 |
GraphArcLookUpConverter(const Graph& graph, |
| 217 | 217 |
const std::map<typename Graph::Edge, |
| 218 | 218 |
std::string>& map) |
| 219 | 219 |
: _graph(graph), _map(map) {}
|
| 220 | 220 |
|
| 221 | 221 |
std::string operator()(const typename Graph::Arc& val) {
|
| 222 | 222 |
typename std::map<typename Graph::Edge, std::string> |
| 223 | 223 |
::const_iterator it = _map.find(val); |
| 224 | 224 |
if (it == _map.end()) {
|
| 225 | 225 |
throw FormatError("Item not found");
|
| 226 | 226 |
} |
| 227 | 227 |
return (_graph.direction(val) ? '+' : '-') + it->second; |
| 228 | 228 |
} |
| 229 | 229 |
}; |
| 230 | 230 |
|
| 231 | 231 |
inline bool isWhiteSpace(char c) {
|
| 232 | 232 |
return c == ' ' || c == '\t' || c == '\v' || |
| 233 | 233 |
c == '\n' || c == '\r' || c == '\f'; |
| 234 | 234 |
} |
| 235 | 235 |
|
| 236 | 236 |
inline bool isEscaped(char c) {
|
| 237 | 237 |
return c == '\\' || c == '\"' || c == '\'' || |
| 238 | 238 |
c == '\a' || c == '\b'; |
| 239 | 239 |
} |
| 240 | 240 |
|
| 241 | 241 |
inline static void writeEscape(std::ostream& os, char c) {
|
| 242 | 242 |
switch (c) {
|
| 243 | 243 |
case '\\': |
| 244 | 244 |
os << "\\\\"; |
| 245 | 245 |
return; |
| 246 | 246 |
case '\"': |
| 247 | 247 |
os << "\\\""; |
| 248 | 248 |
return; |
| 249 | 249 |
case '\a': |
| 250 | 250 |
os << "\\a"; |
| 251 | 251 |
return; |
| 252 | 252 |
case '\b': |
| 253 | 253 |
os << "\\b"; |
| 254 | 254 |
return; |
| 255 | 255 |
case '\f': |
| 256 | 256 |
os << "\\f"; |
| 257 | 257 |
return; |
| 258 | 258 |
case '\r': |
| 259 | 259 |
os << "\\r"; |
| 260 | 260 |
return; |
| 261 | 261 |
case '\n': |
| 262 | 262 |
os << "\\n"; |
| 263 | 263 |
return; |
| 264 | 264 |
case '\t': |
| 265 | 265 |
os << "\\t"; |
| 266 | 266 |
return; |
| 267 | 267 |
case '\v': |
| 268 | 268 |
os << "\\v"; |
| 269 | 269 |
return; |
| 270 | 270 |
default: |
| 271 | 271 |
if (c < 0x20) {
|
| 272 | 272 |
std::ios::fmtflags flags = os.flags(); |
| 273 | 273 |
os << '\\' << std::oct << static_cast<int>(c); |
| 274 | 274 |
os.flags(flags); |
| 275 | 275 |
} else {
|
| 276 | 276 |
os << c; |
| 277 | 277 |
} |
| 278 | 278 |
return; |
| 279 | 279 |
} |
| 280 | 280 |
} |
| 281 | 281 |
|
| 282 | 282 |
inline bool requireEscape(const std::string& str) {
|
| 283 | 283 |
if (str.empty() || str[0] == '@') return true; |
| 284 | 284 |
std::istringstream is(str); |
| 285 | 285 |
char c; |
| 286 | 286 |
while (is.get(c)) {
|
| 287 | 287 |
if (isWhiteSpace(c) || isEscaped(c)) {
|
| 288 | 288 |
return true; |
| 289 | 289 |
} |
| 290 | 290 |
} |
| 291 | 291 |
return false; |
| 292 | 292 |
} |
| 293 | 293 |
|
| 294 | 294 |
inline std::ostream& writeToken(std::ostream& os, const std::string& str) {
|
| 295 | 295 |
|
| 296 | 296 |
if (requireEscape(str)) {
|
| 297 | 297 |
os << '\"'; |
| 298 | 298 |
for (std::string::const_iterator it = str.begin(); |
| 299 | 299 |
it != str.end(); ++it) {
|
| 300 | 300 |
writeEscape(os, *it); |
| 301 | 301 |
} |
| 302 | 302 |
os << '\"'; |
| 303 | 303 |
} else {
|
| 304 | 304 |
os << str; |
| 305 | 305 |
} |
| 306 | 306 |
return os; |
| 307 | 307 |
} |
| 308 | 308 |
|
| 309 | 309 |
class Section {
|
| 310 | 310 |
public: |
| 311 | 311 |
virtual ~Section() {}
|
| 312 | 312 |
virtual void process(std::ostream& os) = 0; |
| 313 | 313 |
}; |
| 314 | 314 |
|
| 315 | 315 |
template <typename Functor> |
| 316 | 316 |
class LineSection : public Section {
|
| 317 | 317 |
private: |
| 318 | 318 |
|
| 319 | 319 |
Functor _functor; |
| 320 | 320 |
|
| 321 | 321 |
public: |
| 322 | 322 |
|
| 323 | 323 |
LineSection(const Functor& functor) : _functor(functor) {}
|
| 324 | 324 |
virtual ~LineSection() {}
|
| 325 | 325 |
|
| 326 | 326 |
virtual void process(std::ostream& os) {
|
| 327 | 327 |
std::string line; |
| 328 | 328 |
while (!(line = _functor()).empty()) os << line << std::endl; |
| 329 | 329 |
} |
| 330 | 330 |
}; |
| 331 | 331 |
|
| 332 | 332 |
template <typename Functor> |
| 333 | 333 |
class StreamSection : public Section {
|
| 334 | 334 |
private: |
| 335 | 335 |
|
| 336 | 336 |
Functor _functor; |
| 337 | 337 |
|
| 338 | 338 |
public: |
| 339 | 339 |
|
| 340 | 340 |
StreamSection(const Functor& functor) : _functor(functor) {}
|
| 341 | 341 |
virtual ~StreamSection() {}
|
| 342 | 342 |
|
| 343 | 343 |
virtual void process(std::ostream& os) {
|
| 344 | 344 |
_functor(os); |
| 345 | 345 |
} |
| 346 | 346 |
}; |
| 347 | 347 |
|
| 348 | 348 |
} |
| 349 | 349 |
|
| 350 |
template <typename |
|
| 350 |
template <typename DGR> |
|
| 351 | 351 |
class DigraphWriter; |
| 352 | 352 |
|
| 353 |
/// \brief Return a \ref DigraphWriter class |
|
| 354 |
/// |
|
| 355 |
/// This function just returns a \ref DigraphWriter class. |
|
| 356 |
/// \relates DigraphWriter |
|
| 357 |
template <typename Digraph> |
|
| 358 |
DigraphWriter<Digraph> digraphWriter(const Digraph& digraph, |
|
| 359 |
std::ostream& os = std::cout) {
|
|
| 360 |
DigraphWriter<Digraph> tmp(digraph, os); |
|
| 361 |
return tmp; |
|
| 362 |
} |
|
| 353 |
template <typename TDGR> |
|
| 354 |
DigraphWriter<TDGR> digraphWriter(const TDGR& digraph, |
|
| 355 |
std::ostream& os = std::cout); |
|
| 356 |
template <typename TDGR> |
|
| 357 |
DigraphWriter<TDGR> digraphWriter(const TDGR& digraph, const std::string& fn); |
|
| 363 | 358 |
|
| 364 |
/// \brief Return a \ref DigraphWriter class |
|
| 365 |
/// |
|
| 366 |
/// This function just returns a \ref DigraphWriter class. |
|
| 367 |
/// \relates DigraphWriter |
|
| 368 |
template <typename Digraph> |
|
| 369 |
DigraphWriter<Digraph> digraphWriter(const Digraph& digraph, |
|
| 370 |
const std::string& fn) {
|
|
| 371 |
DigraphWriter<Digraph> tmp(digraph, fn); |
|
| 372 |
return tmp; |
|
| 373 |
} |
|
| 359 |
template <typename TDGR> |
|
| 360 |
DigraphWriter<TDGR> digraphWriter(const TDGR& digraph, const char* fn); |
|
| 374 | 361 |
|
| 375 |
/// \brief Return a \ref DigraphWriter class |
|
| 376 |
/// |
|
| 377 |
/// This function just returns a \ref DigraphWriter class. |
|
| 378 |
/// \relates DigraphWriter |
|
| 379 |
template <typename Digraph> |
|
| 380 |
DigraphWriter<Digraph> digraphWriter(const Digraph& digraph, |
|
| 381 |
const char* fn) {
|
|
| 382 |
DigraphWriter<Digraph> tmp(digraph, fn); |
|
| 383 |
return tmp; |
|
| 384 |
} |
|
| 385 | 362 |
|
| 386 | 363 |
/// \ingroup lemon_io |
| 387 | 364 |
/// |
| 388 | 365 |
/// \brief \ref lgf-format "LGF" writer for directed graphs |
| 389 | 366 |
/// |
| 390 | 367 |
/// This utility writes an \ref lgf-format "LGF" file. |
| 391 | 368 |
/// |
| 392 | 369 |
/// The writing method does a batch processing. The user creates a |
| 393 | 370 |
/// writer object, then various writing rules can be added to the |
| 394 | 371 |
/// writer, and eventually the writing is executed with the \c run() |
| 395 | 372 |
/// member function. A map writing rule can be added to the writer |
| 396 | 373 |
/// with the \c nodeMap() or \c arcMap() members. An optional |
| 397 | 374 |
/// converter parameter can also be added as a standard functor |
| 398 | 375 |
/// converting from the value type of the map to \c std::string. If it |
| 399 | 376 |
/// is set, it will determine how the value type of the map is written to |
| 400 | 377 |
/// the output stream. If the functor is not set, then a default |
| 401 | 378 |
/// conversion will be used. The \c attribute(), \c node() and \c |
| 402 | 379 |
/// arc() functions are used to add attribute writing rules. |
| 403 | 380 |
/// |
| 404 | 381 |
///\code |
| 405 |
/// DigraphWriter< |
|
| 382 |
/// DigraphWriter<DGR>(digraph, std::cout). |
|
| 406 | 383 |
/// nodeMap("coordinates", coord_map).
|
| 407 | 384 |
/// nodeMap("size", size).
|
| 408 | 385 |
/// nodeMap("title", title).
|
| 409 | 386 |
/// arcMap("capacity", cap_map).
|
| 410 | 387 |
/// node("source", src).
|
| 411 | 388 |
/// node("target", trg).
|
| 412 | 389 |
/// attribute("caption", caption).
|
| 413 | 390 |
/// run(); |
| 414 | 391 |
///\endcode |
| 415 | 392 |
/// |
| 416 | 393 |
/// |
| 417 | 394 |
/// By default, the writer does not write additional captions to the |
| 418 | 395 |
/// sections, but they can be give as an optional parameter of |
| 419 | 396 |
/// the \c nodes(), \c arcs() or \c |
| 420 | 397 |
/// attributes() functions. |
| 421 | 398 |
/// |
| 422 | 399 |
/// The \c skipNodes() and \c skipArcs() functions forbid the |
| 423 | 400 |
/// writing of the sections. If two arc sections should be written |
| 424 | 401 |
/// to the output, it can be done in two passes, the first pass |
| 425 | 402 |
/// writes the node section and the first arc section, then the |
| 426 | 403 |
/// second pass skips the node section and writes just the arc |
| 427 | 404 |
/// section to the stream. The output stream can be retrieved with |
| 428 | 405 |
/// the \c ostream() function, hence the second pass can append its |
| 429 | 406 |
/// output to the output of the first pass. |
| 430 |
template <typename |
|
| 407 |
template <typename DGR> |
|
| 431 | 408 |
class DigraphWriter {
|
| 432 | 409 |
public: |
| 433 | 410 |
|
| 434 |
typedef _Digraph Digraph; |
|
| 435 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
|
| 411 |
typedef DGR Digraph; |
|
| 412 |
TEMPLATE_DIGRAPH_TYPEDEFS(DGR); |
|
| 436 | 413 |
|
| 437 | 414 |
private: |
| 438 | 415 |
|
| 439 | 416 |
|
| 440 | 417 |
std::ostream* _os; |
| 441 | 418 |
bool local_os; |
| 442 | 419 |
|
| 443 |
const |
|
| 420 |
const DGR& _digraph; |
|
| 444 | 421 |
|
| 445 | 422 |
std::string _nodes_caption; |
| 446 | 423 |
std::string _arcs_caption; |
| 447 | 424 |
std::string _attributes_caption; |
| 448 | 425 |
|
| 449 | 426 |
typedef std::map<Node, std::string> NodeIndex; |
| 450 | 427 |
NodeIndex _node_index; |
| 451 | 428 |
typedef std::map<Arc, std::string> ArcIndex; |
| 452 | 429 |
ArcIndex _arc_index; |
| 453 | 430 |
|
| 454 | 431 |
typedef std::vector<std::pair<std::string, |
| 455 | 432 |
_writer_bits::MapStorageBase<Node>* > > NodeMaps; |
| 456 | 433 |
NodeMaps _node_maps; |
| 457 | 434 |
|
| 458 | 435 |
typedef std::vector<std::pair<std::string, |
| 459 | 436 |
_writer_bits::MapStorageBase<Arc>* > >ArcMaps; |
| 460 | 437 |
ArcMaps _arc_maps; |
| 461 | 438 |
|
| 462 | 439 |
typedef std::vector<std::pair<std::string, |
| 463 | 440 |
_writer_bits::ValueStorageBase*> > Attributes; |
| 464 | 441 |
Attributes _attributes; |
| 465 | 442 |
|
| 466 | 443 |
bool _skip_nodes; |
| 467 | 444 |
bool _skip_arcs; |
| 468 | 445 |
|
| 469 | 446 |
public: |
| 470 | 447 |
|
| 471 | 448 |
/// \brief Constructor |
| 472 | 449 |
/// |
| 473 | 450 |
/// Construct a directed graph writer, which writes to the given |
| 474 | 451 |
/// output stream. |
| 475 |
DigraphWriter(const |
|
| 452 |
DigraphWriter(const DGR& digraph, std::ostream& os = std::cout) |
|
| 476 | 453 |
: _os(&os), local_os(false), _digraph(digraph), |
| 477 | 454 |
_skip_nodes(false), _skip_arcs(false) {}
|
| 478 | 455 |
|
| 479 | 456 |
/// \brief Constructor |
| 480 | 457 |
/// |
| 481 | 458 |
/// Construct a directed graph writer, which writes to the given |
| 482 | 459 |
/// output file. |
| 483 |
DigraphWriter(const |
|
| 460 |
DigraphWriter(const DGR& digraph, const std::string& fn) |
|
| 484 | 461 |
: _os(new std::ofstream(fn.c_str())), local_os(true), _digraph(digraph), |
| 485 | 462 |
_skip_nodes(false), _skip_arcs(false) {
|
| 486 | 463 |
if (!(*_os)) {
|
| 487 | 464 |
delete _os; |
| 488 | 465 |
throw IoError("Cannot write file", fn);
|
| 489 | 466 |
} |
| 490 | 467 |
} |
| 491 | 468 |
|
| 492 | 469 |
/// \brief Constructor |
| 493 | 470 |
/// |
| 494 | 471 |
/// Construct a directed graph writer, which writes to the given |
| 495 | 472 |
/// output file. |
| 496 |
DigraphWriter(const |
|
| 473 |
DigraphWriter(const DGR& digraph, const char* fn) |
|
| 497 | 474 |
: _os(new std::ofstream(fn)), local_os(true), _digraph(digraph), |
| 498 | 475 |
_skip_nodes(false), _skip_arcs(false) {
|
| 499 | 476 |
if (!(*_os)) {
|
| 500 | 477 |
delete _os; |
| 501 | 478 |
throw IoError("Cannot write file", fn);
|
| 502 | 479 |
} |
| 503 | 480 |
} |
| 504 | 481 |
|
| 505 | 482 |
/// \brief Destructor |
| 506 | 483 |
~DigraphWriter() {
|
| 507 | 484 |
for (typename NodeMaps::iterator it = _node_maps.begin(); |
| 508 | 485 |
it != _node_maps.end(); ++it) {
|
| 509 | 486 |
delete it->second; |
| 510 | 487 |
} |
| 511 | 488 |
|
| 512 | 489 |
for (typename ArcMaps::iterator it = _arc_maps.begin(); |
| 513 | 490 |
it != _arc_maps.end(); ++it) {
|
| 514 | 491 |
delete it->second; |
| 515 | 492 |
} |
| 516 | 493 |
|
| 517 | 494 |
for (typename Attributes::iterator it = _attributes.begin(); |
| 518 | 495 |
it != _attributes.end(); ++it) {
|
| 519 | 496 |
delete it->second; |
| 520 | 497 |
} |
| 521 | 498 |
|
| 522 | 499 |
if (local_os) {
|
| 523 | 500 |
delete _os; |
| 524 | 501 |
} |
| 525 | 502 |
} |
| 526 | 503 |
|
| 527 | 504 |
private: |
| 528 | 505 |
|
| 529 |
friend DigraphWriter<Digraph> digraphWriter<>(const Digraph& digraph, |
|
| 530 |
std::ostream& os); |
|
| 531 |
friend DigraphWriter<Digraph> digraphWriter<>(const Digraph& digraph, |
|
| 532 |
const std::string& fn); |
|
| 533 |
friend DigraphWriter<Digraph> digraphWriter<>(const Digraph& digraph, |
|
| 534 |
const char *fn); |
|
| 506 |
template <typename TDGR> |
|
| 507 |
friend DigraphWriter<TDGR> digraphWriter(const TDGR& digraph, |
|
| 508 |
std::ostream& os); |
|
| 509 |
template <typename TDGR> |
|
| 510 |
friend DigraphWriter<TDGR> digraphWriter(const TDGR& digraph, |
|
| 511 |
const std::string& fn); |
|
| 512 |
template <typename TDGR> |
|
| 513 |
friend DigraphWriter<TDGR> digraphWriter(const TDGR& digraph, |
|
| 514 |
const char *fn); |
|
| 535 | 515 |
|
| 536 | 516 |
DigraphWriter(DigraphWriter& other) |
| 537 | 517 |
: _os(other._os), local_os(other.local_os), _digraph(other._digraph), |
| 538 | 518 |
_skip_nodes(other._skip_nodes), _skip_arcs(other._skip_arcs) {
|
| 539 | 519 |
|
| 540 | 520 |
other._os = 0; |
| 541 | 521 |
other.local_os = false; |
| 542 | 522 |
|
| 543 | 523 |
_node_index.swap(other._node_index); |
| 544 | 524 |
_arc_index.swap(other._arc_index); |
| 545 | 525 |
|
| 546 | 526 |
_node_maps.swap(other._node_maps); |
| 547 | 527 |
_arc_maps.swap(other._arc_maps); |
| 548 | 528 |
_attributes.swap(other._attributes); |
| 549 | 529 |
|
| 550 | 530 |
_nodes_caption = other._nodes_caption; |
| 551 | 531 |
_arcs_caption = other._arcs_caption; |
| 552 | 532 |
_attributes_caption = other._attributes_caption; |
| 553 | 533 |
} |
| 554 | 534 |
|
| 555 | 535 |
DigraphWriter& operator=(const DigraphWriter&); |
| 556 | 536 |
|
| 557 | 537 |
public: |
| 558 | 538 |
|
| 559 |
/// \name Writing |
|
| 539 |
/// \name Writing Rules |
|
| 560 | 540 |
/// @{
|
| 561 | 541 |
|
| 562 | 542 |
/// \brief Node map writing rule |
| 563 | 543 |
/// |
| 564 | 544 |
/// Add a node map writing rule to the writer. |
| 565 | 545 |
template <typename Map> |
| 566 | 546 |
DigraphWriter& nodeMap(const std::string& caption, const Map& map) {
|
| 567 | 547 |
checkConcept<concepts::ReadMap<Node, typename Map::Value>, Map>(); |
| 568 | 548 |
_writer_bits::MapStorageBase<Node>* storage = |
| 569 | 549 |
new _writer_bits::MapStorage<Node, Map>(map); |
| 570 | 550 |
_node_maps.push_back(std::make_pair(caption, storage)); |
| 571 | 551 |
return *this; |
| 572 | 552 |
} |
| 573 | 553 |
|
| 574 | 554 |
/// \brief Node map writing rule |
| 575 | 555 |
/// |
| 576 | 556 |
/// Add a node map writing rule with specialized converter to the |
| 577 | 557 |
/// writer. |
| 578 | 558 |
template <typename Map, typename Converter> |
| 579 | 559 |
DigraphWriter& nodeMap(const std::string& caption, const Map& map, |
| 580 | 560 |
const Converter& converter = Converter()) {
|
| 581 | 561 |
checkConcept<concepts::ReadMap<Node, typename Map::Value>, Map>(); |
| 582 | 562 |
_writer_bits::MapStorageBase<Node>* storage = |
| 583 | 563 |
new _writer_bits::MapStorage<Node, Map, Converter>(map, converter); |
| 584 | 564 |
_node_maps.push_back(std::make_pair(caption, storage)); |
| 585 | 565 |
return *this; |
| 586 | 566 |
} |
| 587 | 567 |
|
| 588 | 568 |
/// \brief Arc map writing rule |
| 589 | 569 |
/// |
| 590 | 570 |
/// Add an arc map writing rule to the writer. |
| 591 | 571 |
template <typename Map> |
| 592 | 572 |
DigraphWriter& arcMap(const std::string& caption, const Map& map) {
|
| 593 | 573 |
checkConcept<concepts::ReadMap<Arc, typename Map::Value>, Map>(); |
| 594 | 574 |
_writer_bits::MapStorageBase<Arc>* storage = |
| 595 | 575 |
new _writer_bits::MapStorage<Arc, Map>(map); |
| 596 | 576 |
_arc_maps.push_back(std::make_pair(caption, storage)); |
| 597 | 577 |
return *this; |
| 598 | 578 |
} |
| 599 | 579 |
|
| 600 | 580 |
/// \brief Arc map writing rule |
| 601 | 581 |
/// |
| 602 | 582 |
/// Add an arc map writing rule with specialized converter to the |
| 603 | 583 |
/// writer. |
| 604 | 584 |
template <typename Map, typename Converter> |
| 605 | 585 |
DigraphWriter& arcMap(const std::string& caption, const Map& map, |
| 606 | 586 |
const Converter& converter = Converter()) {
|
| 607 | 587 |
checkConcept<concepts::ReadMap<Arc, typename Map::Value>, Map>(); |
| 608 | 588 |
_writer_bits::MapStorageBase<Arc>* storage = |
| 609 | 589 |
new _writer_bits::MapStorage<Arc, Map, Converter>(map, converter); |
| 610 | 590 |
_arc_maps.push_back(std::make_pair(caption, storage)); |
| 611 | 591 |
return *this; |
| 612 | 592 |
} |
| 613 | 593 |
|
| 614 | 594 |
/// \brief Attribute writing rule |
| 615 | 595 |
/// |
| 616 | 596 |
/// Add an attribute writing rule to the writer. |
| 617 | 597 |
template <typename Value> |
| 618 | 598 |
DigraphWriter& attribute(const std::string& caption, const Value& value) {
|
| 619 | 599 |
_writer_bits::ValueStorageBase* storage = |
| 620 | 600 |
new _writer_bits::ValueStorage<Value>(value); |
| 621 | 601 |
_attributes.push_back(std::make_pair(caption, storage)); |
| 622 | 602 |
return *this; |
| 623 | 603 |
} |
| 624 | 604 |
|
| 625 | 605 |
/// \brief Attribute writing rule |
| 626 | 606 |
/// |
| 627 | 607 |
/// Add an attribute writing rule with specialized converter to the |
| 628 | 608 |
/// writer. |
| 629 | 609 |
template <typename Value, typename Converter> |
| 630 | 610 |
DigraphWriter& attribute(const std::string& caption, const Value& value, |
| 631 | 611 |
const Converter& converter = Converter()) {
|
| 632 | 612 |
_writer_bits::ValueStorageBase* storage = |
| 633 | 613 |
new _writer_bits::ValueStorage<Value, Converter>(value, converter); |
| 634 | 614 |
_attributes.push_back(std::make_pair(caption, storage)); |
| 635 | 615 |
return *this; |
| 636 | 616 |
} |
| 637 | 617 |
|
| 638 | 618 |
/// \brief Node writing rule |
| 639 | 619 |
/// |
| 640 | 620 |
/// Add a node writing rule to the writer. |
| 641 | 621 |
DigraphWriter& node(const std::string& caption, const Node& node) {
|
| 642 | 622 |
typedef _writer_bits::MapLookUpConverter<Node> Converter; |
| 643 | 623 |
Converter converter(_node_index); |
| 644 | 624 |
_writer_bits::ValueStorageBase* storage = |
| 645 | 625 |
new _writer_bits::ValueStorage<Node, Converter>(node, converter); |
| 646 | 626 |
_attributes.push_back(std::make_pair(caption, storage)); |
| 647 | 627 |
return *this; |
| 648 | 628 |
} |
| 649 | 629 |
|
| 650 | 630 |
/// \brief Arc writing rule |
| 651 | 631 |
/// |
| 652 | 632 |
/// Add an arc writing rule to writer. |
| 653 | 633 |
DigraphWriter& arc(const std::string& caption, const Arc& arc) {
|
| 654 | 634 |
typedef _writer_bits::MapLookUpConverter<Arc> Converter; |
| 655 | 635 |
Converter converter(_arc_index); |
| 656 | 636 |
_writer_bits::ValueStorageBase* storage = |
| 657 | 637 |
new _writer_bits::ValueStorage<Arc, Converter>(arc, converter); |
| 658 | 638 |
_attributes.push_back(std::make_pair(caption, storage)); |
| 659 | 639 |
return *this; |
| 660 | 640 |
} |
| 661 | 641 |
|
| 662 |
/// \name Section |
|
| 642 |
/// \name Section Captions |
|
| 663 | 643 |
/// @{
|
| 664 | 644 |
|
| 665 | 645 |
/// \brief Add an additional caption to the \c \@nodes section |
| 666 | 646 |
/// |
| 667 | 647 |
/// Add an additional caption to the \c \@nodes section. |
| 668 | 648 |
DigraphWriter& nodes(const std::string& caption) {
|
| 669 | 649 |
_nodes_caption = caption; |
| 670 | 650 |
return *this; |
| 671 | 651 |
} |
| 672 | 652 |
|
| 673 | 653 |
/// \brief Add an additional caption to the \c \@arcs section |
| 674 | 654 |
/// |
| 675 | 655 |
/// Add an additional caption to the \c \@arcs section. |
| 676 | 656 |
DigraphWriter& arcs(const std::string& caption) {
|
| 677 | 657 |
_arcs_caption = caption; |
| 678 | 658 |
return *this; |
| 679 | 659 |
} |
| 680 | 660 |
|
| 681 | 661 |
/// \brief Add an additional caption to the \c \@attributes section |
| 682 | 662 |
/// |
| 683 | 663 |
/// Add an additional caption to the \c \@attributes section. |
| 684 | 664 |
DigraphWriter& attributes(const std::string& caption) {
|
| 685 | 665 |
_attributes_caption = caption; |
| 686 | 666 |
return *this; |
| 687 | 667 |
} |
| 688 | 668 |
|
| 689 |
/// \name Skipping |
|
| 669 |
/// \name Skipping Section |
|
| 690 | 670 |
/// @{
|
| 691 | 671 |
|
| 692 | 672 |
/// \brief Skip writing the node set |
| 693 | 673 |
/// |
| 694 | 674 |
/// The \c \@nodes section will not be written to the stream. |
| 695 | 675 |
DigraphWriter& skipNodes() {
|
| 696 | 676 |
LEMON_ASSERT(!_skip_nodes, "Multiple usage of skipNodes() member"); |
| 697 | 677 |
_skip_nodes = true; |
| 698 | 678 |
return *this; |
| 699 | 679 |
} |
| 700 | 680 |
|
| 701 | 681 |
/// \brief Skip writing arc set |
| 702 | 682 |
/// |
| 703 | 683 |
/// The \c \@arcs section will not be written to the stream. |
| 704 | 684 |
DigraphWriter& skipArcs() {
|
| 705 | 685 |
LEMON_ASSERT(!_skip_arcs, "Multiple usage of skipArcs() member"); |
| 706 | 686 |
_skip_arcs = true; |
| 707 | 687 |
return *this; |
| 708 | 688 |
} |
| 709 | 689 |
|
| 710 | 690 |
/// @} |
| 711 | 691 |
|
| 712 | 692 |
private: |
| 713 | 693 |
|
| 714 | 694 |
void writeNodes() {
|
| 715 | 695 |
_writer_bits::MapStorageBase<Node>* label = 0; |
| 716 | 696 |
for (typename NodeMaps::iterator it = _node_maps.begin(); |
| 717 | 697 |
it != _node_maps.end(); ++it) {
|
| 718 | 698 |
if (it->first == "label") {
|
| 719 | 699 |
label = it->second; |
| 720 | 700 |
break; |
| 721 | 701 |
} |
| 722 | 702 |
} |
| 723 | 703 |
|
| 724 | 704 |
*_os << "@nodes"; |
| 725 | 705 |
if (!_nodes_caption.empty()) {
|
| 726 | 706 |
_writer_bits::writeToken(*_os << ' ', _nodes_caption); |
| 727 | 707 |
} |
| 728 | 708 |
*_os << std::endl; |
| 729 | 709 |
|
| 730 | 710 |
if (label == 0) {
|
| 731 | 711 |
*_os << "label" << '\t'; |
| 732 | 712 |
} |
| 733 | 713 |
for (typename NodeMaps::iterator it = _node_maps.begin(); |
| 734 | 714 |
it != _node_maps.end(); ++it) {
|
| 735 | 715 |
_writer_bits::writeToken(*_os, it->first) << '\t'; |
| 736 | 716 |
} |
| 737 | 717 |
*_os << std::endl; |
| 738 | 718 |
|
| 739 | 719 |
std::vector<Node> nodes; |
| 740 | 720 |
for (NodeIt n(_digraph); n != INVALID; ++n) {
|
| 741 | 721 |
nodes.push_back(n); |
| 742 | 722 |
} |
| 743 | 723 |
|
| 744 | 724 |
if (label == 0) {
|
| 745 |
IdMap<Digraph, Node> id_map(_digraph); |
|
| 746 |
_writer_bits::MapLess<IdMap<Digraph, Node> > id_less(id_map); |
|
| 725 |
IdMap<DGR, Node> id_map(_digraph); |
|
| 726 |
_writer_bits::MapLess<IdMap<DGR, Node> > id_less(id_map); |
|
| 747 | 727 |
std::sort(nodes.begin(), nodes.end(), id_less); |
| 748 | 728 |
} else {
|
| 749 | 729 |
label->sort(nodes); |
| 750 | 730 |
} |
| 751 | 731 |
|
| 752 | 732 |
for (int i = 0; i < static_cast<int>(nodes.size()); ++i) {
|
| 753 | 733 |
Node n = nodes[i]; |
| 754 | 734 |
if (label == 0) {
|
| 755 | 735 |
std::ostringstream os; |
| 756 | 736 |
os << _digraph.id(n); |
| 757 | 737 |
_writer_bits::writeToken(*_os, os.str()); |
| 758 | 738 |
*_os << '\t'; |
| 759 | 739 |
_node_index.insert(std::make_pair(n, os.str())); |
| 760 | 740 |
} |
| 761 | 741 |
for (typename NodeMaps::iterator it = _node_maps.begin(); |
| 762 | 742 |
it != _node_maps.end(); ++it) {
|
| 763 | 743 |
std::string value = it->second->get(n); |
| 764 | 744 |
_writer_bits::writeToken(*_os, value); |
| 765 | 745 |
if (it->first == "label") {
|
| 766 | 746 |
_node_index.insert(std::make_pair(n, value)); |
| 767 | 747 |
} |
| 768 | 748 |
*_os << '\t'; |
| 769 | 749 |
} |
| 770 | 750 |
*_os << std::endl; |
| 771 | 751 |
} |
| 772 | 752 |
} |
| 773 | 753 |
|
| 774 | 754 |
void createNodeIndex() {
|
| 775 | 755 |
_writer_bits::MapStorageBase<Node>* label = 0; |
| 776 | 756 |
for (typename NodeMaps::iterator it = _node_maps.begin(); |
| 777 | 757 |
it != _node_maps.end(); ++it) {
|
| 778 | 758 |
if (it->first == "label") {
|
| 779 | 759 |
label = it->second; |
| 780 | 760 |
break; |
| 781 | 761 |
} |
| 782 | 762 |
} |
| 783 | 763 |
|
| 784 | 764 |
if (label == 0) {
|
| 785 | 765 |
for (NodeIt n(_digraph); n != INVALID; ++n) {
|
| 786 | 766 |
std::ostringstream os; |
| 787 | 767 |
os << _digraph.id(n); |
| 788 | 768 |
_node_index.insert(std::make_pair(n, os.str())); |
| 789 | 769 |
} |
| 790 | 770 |
} else {
|
| 791 | 771 |
for (NodeIt n(_digraph); n != INVALID; ++n) {
|
| 792 | 772 |
std::string value = label->get(n); |
| 793 | 773 |
_node_index.insert(std::make_pair(n, value)); |
| 794 | 774 |
} |
| 795 | 775 |
} |
| 796 | 776 |
} |
| 797 | 777 |
|
| 798 | 778 |
void writeArcs() {
|
| 799 | 779 |
_writer_bits::MapStorageBase<Arc>* label = 0; |
| 800 | 780 |
for (typename ArcMaps::iterator it = _arc_maps.begin(); |
| 801 | 781 |
it != _arc_maps.end(); ++it) {
|
| 802 | 782 |
if (it->first == "label") {
|
| 803 | 783 |
label = it->second; |
| 804 | 784 |
break; |
| 805 | 785 |
} |
| 806 | 786 |
} |
| 807 | 787 |
|
| 808 | 788 |
*_os << "@arcs"; |
| 809 | 789 |
if (!_arcs_caption.empty()) {
|
| 810 | 790 |
_writer_bits::writeToken(*_os << ' ', _arcs_caption); |
| 811 | 791 |
} |
| 812 | 792 |
*_os << std::endl; |
| 813 | 793 |
|
| 814 | 794 |
*_os << '\t' << '\t'; |
| 815 | 795 |
if (label == 0) {
|
| 816 | 796 |
*_os << "label" << '\t'; |
| 817 | 797 |
} |
| 818 | 798 |
for (typename ArcMaps::iterator it = _arc_maps.begin(); |
| 819 | 799 |
it != _arc_maps.end(); ++it) {
|
| 820 | 800 |
_writer_bits::writeToken(*_os, it->first) << '\t'; |
| 821 | 801 |
} |
| 822 | 802 |
*_os << std::endl; |
| 823 | 803 |
|
| 824 | 804 |
std::vector<Arc> arcs; |
| 825 | 805 |
for (ArcIt n(_digraph); n != INVALID; ++n) {
|
| 826 | 806 |
arcs.push_back(n); |
| 827 | 807 |
} |
| 828 | 808 |
|
| 829 | 809 |
if (label == 0) {
|
| 830 |
IdMap<Digraph, Arc> id_map(_digraph); |
|
| 831 |
_writer_bits::MapLess<IdMap<Digraph, Arc> > id_less(id_map); |
|
| 810 |
IdMap<DGR, Arc> id_map(_digraph); |
|
| 811 |
_writer_bits::MapLess<IdMap<DGR, Arc> > id_less(id_map); |
|
| 832 | 812 |
std::sort(arcs.begin(), arcs.end(), id_less); |
| 833 | 813 |
} else {
|
| 834 | 814 |
label->sort(arcs); |
| 835 | 815 |
} |
| 836 | 816 |
|
| 837 | 817 |
for (int i = 0; i < static_cast<int>(arcs.size()); ++i) {
|
| 838 | 818 |
Arc a = arcs[i]; |
| 839 | 819 |
_writer_bits::writeToken(*_os, _node_index. |
| 840 | 820 |
find(_digraph.source(a))->second); |
| 841 | 821 |
*_os << '\t'; |
| 842 | 822 |
_writer_bits::writeToken(*_os, _node_index. |
| 843 | 823 |
find(_digraph.target(a))->second); |
| 844 | 824 |
*_os << '\t'; |
| 845 | 825 |
if (label == 0) {
|
| 846 | 826 |
std::ostringstream os; |
| 847 | 827 |
os << _digraph.id(a); |
| 848 | 828 |
_writer_bits::writeToken(*_os, os.str()); |
| 849 | 829 |
*_os << '\t'; |
| 850 | 830 |
_arc_index.insert(std::make_pair(a, os.str())); |
| 851 | 831 |
} |
| 852 | 832 |
for (typename ArcMaps::iterator it = _arc_maps.begin(); |
| 853 | 833 |
it != _arc_maps.end(); ++it) {
|
| 854 | 834 |
std::string value = it->second->get(a); |
| 855 | 835 |
_writer_bits::writeToken(*_os, value); |
| 856 | 836 |
if (it->first == "label") {
|
| 857 | 837 |
_arc_index.insert(std::make_pair(a, value)); |
| 858 | 838 |
} |
| 859 | 839 |
*_os << '\t'; |
| 860 | 840 |
} |
| 861 | 841 |
*_os << std::endl; |
| 862 | 842 |
} |
| 863 | 843 |
} |
| 864 | 844 |
|
| 865 | 845 |
void createArcIndex() {
|
| 866 | 846 |
_writer_bits::MapStorageBase<Arc>* label = 0; |
| 867 | 847 |
for (typename ArcMaps::iterator it = _arc_maps.begin(); |
| 868 | 848 |
it != _arc_maps.end(); ++it) {
|
| 869 | 849 |
if (it->first == "label") {
|
| 870 | 850 |
label = it->second; |
| 871 | 851 |
break; |
| 872 | 852 |
} |
| 873 | 853 |
} |
| 874 | 854 |
|
| 875 | 855 |
if (label == 0) {
|
| 876 | 856 |
for (ArcIt a(_digraph); a != INVALID; ++a) {
|
| 877 | 857 |
std::ostringstream os; |
| 878 | 858 |
os << _digraph.id(a); |
| 879 | 859 |
_arc_index.insert(std::make_pair(a, os.str())); |
| 880 | 860 |
} |
| 881 | 861 |
} else {
|
| 882 | 862 |
for (ArcIt a(_digraph); a != INVALID; ++a) {
|
| 883 | 863 |
std::string value = label->get(a); |
| 884 | 864 |
_arc_index.insert(std::make_pair(a, value)); |
| 885 | 865 |
} |
| 886 | 866 |
} |
| 887 | 867 |
} |
| 888 | 868 |
|
| 889 | 869 |
void writeAttributes() {
|
| 890 | 870 |
if (_attributes.empty()) return; |
| 891 | 871 |
*_os << "@attributes"; |
| 892 | 872 |
if (!_attributes_caption.empty()) {
|
| 893 | 873 |
_writer_bits::writeToken(*_os << ' ', _attributes_caption); |
| 894 | 874 |
} |
| 895 | 875 |
*_os << std::endl; |
| 896 | 876 |
for (typename Attributes::iterator it = _attributes.begin(); |
| 897 | 877 |
it != _attributes.end(); ++it) {
|
| 898 | 878 |
_writer_bits::writeToken(*_os, it->first) << ' '; |
| 899 | 879 |
_writer_bits::writeToken(*_os, it->second->get()); |
| 900 | 880 |
*_os << std::endl; |
| 901 | 881 |
} |
| 902 | 882 |
} |
| 903 | 883 |
|
| 904 | 884 |
public: |
| 905 | 885 |
|
| 906 |
/// \name Execution of the |
|
| 886 |
/// \name Execution of the Writer |
|
| 907 | 887 |
/// @{
|
| 908 | 888 |
|
| 909 | 889 |
/// \brief Start the batch processing |
| 910 | 890 |
/// |
| 911 | 891 |
/// This function starts the batch processing. |
| 912 | 892 |
void run() {
|
| 913 | 893 |
if (!_skip_nodes) {
|
| 914 | 894 |
writeNodes(); |
| 915 | 895 |
} else {
|
| 916 | 896 |
createNodeIndex(); |
| 917 | 897 |
} |
| 918 | 898 |
if (!_skip_arcs) {
|
| 919 | 899 |
writeArcs(); |
| 920 | 900 |
} else {
|
| 921 | 901 |
createArcIndex(); |
| 922 | 902 |
} |
| 923 | 903 |
writeAttributes(); |
| 924 | 904 |
} |
| 925 | 905 |
|
| 926 | 906 |
/// \brief Give back the stream of the writer |
| 927 | 907 |
/// |
| 928 | 908 |
/// Give back the stream of the writer. |
| 929 | 909 |
std::ostream& ostream() {
|
| 930 | 910 |
return *_os; |
| 931 | 911 |
} |
| 932 | 912 |
|
| 933 | 913 |
/// @} |
| 934 | 914 |
}; |
| 935 | 915 |
|
| 936 |
template <typename Graph> |
|
| 937 |
class GraphWriter; |
|
| 938 |
|
|
| 939 |
/// \brief Return a \ref GraphWriter class |
|
| 916 |
/// \ingroup lemon_io |
|
| 940 | 917 |
/// |
| 941 |
/// This function just returns a \ref GraphWriter class. |
|
| 942 |
/// \relates GraphWriter |
|
| 943 |
template <typename Graph> |
|
| 944 |
GraphWriter<Graph> graphWriter(const Graph& graph, |
|
| 945 |
std::ostream& os = std::cout) {
|
|
| 946 |
GraphWriter<Graph> tmp(graph, os); |
|
| 918 |
/// \brief Return a \ref DigraphWriter class |
|
| 919 |
/// |
|
| 920 |
/// This function just returns a \ref DigraphWriter class. |
|
| 921 |
/// |
|
| 922 |
/// With this function a digraph can be write to a file or output |
|
| 923 |
/// stream in \ref lgf-format "LGF" format with several maps and |
|
| 924 |
/// attributes. For example, with the following code a network flow |
|
| 925 |
/// problem can be written to the standard output, i.e. a digraph |
|
| 926 |
/// with a \e capacity map on the arcs and \e source and \e target |
|
| 927 |
/// nodes: |
|
| 928 |
/// |
|
| 929 |
///\code |
|
| 930 |
///ListDigraph digraph; |
|
| 931 |
///ListDigraph::ArcMap<int> cap(digraph); |
|
| 932 |
///ListDigraph::Node src, trg; |
|
| 933 |
/// // Setting the capacity map and source and target nodes |
|
| 934 |
///digraphWriter(digraph, std::cout). |
|
| 935 |
/// arcMap("capacity", cap).
|
|
| 936 |
/// node("source", src).
|
|
| 937 |
/// node("target", trg).
|
|
| 938 |
/// run(); |
|
| 939 |
///\endcode |
|
| 940 |
/// |
|
| 941 |
/// For a complete documentation, please see the \ref DigraphWriter |
|
| 942 |
/// class documentation. |
|
| 943 |
/// \warning Don't forget to put the \ref DigraphWriter::run() "run()" |
|
| 944 |
/// to the end of the parameter list. |
|
| 945 |
/// \relates DigraphWriter |
|
| 946 |
/// \sa digraphWriter(const TDGR& digraph, const std::string& fn) |
|
| 947 |
/// \sa digraphWriter(const TDGR& digraph, const char* fn) |
|
| 948 |
template <typename TDGR> |
|
| 949 |
DigraphWriter<TDGR> digraphWriter(const TDGR& digraph, std::ostream& os) {
|
|
| 950 |
DigraphWriter<TDGR> tmp(digraph, os); |
|
| 947 | 951 |
return tmp; |
| 948 | 952 |
} |
| 949 | 953 |
|
| 950 |
/// \brief Return a \ref |
|
| 954 |
/// \brief Return a \ref DigraphWriter class |
|
| 951 | 955 |
/// |
| 952 |
/// This function just returns a \ref GraphWriter class. |
|
| 953 |
/// \relates GraphWriter |
|
| 954 |
template <typename Graph> |
|
| 955 |
GraphWriter<Graph> graphWriter(const Graph& graph, const std::string& fn) {
|
|
| 956 |
|
|
| 956 |
/// This function just returns a \ref DigraphWriter class. |
|
| 957 |
/// \relates DigraphWriter |
|
| 958 |
/// \sa digraphWriter(const TDGR& digraph, std::ostream& os) |
|
| 959 |
template <typename TDGR> |
|
| 960 |
DigraphWriter<TDGR> digraphWriter(const TDGR& digraph, |
|
| 961 |
const std::string& fn) {
|
|
| 962 |
DigraphWriter<TDGR> tmp(digraph, fn); |
|
| 957 | 963 |
return tmp; |
| 958 | 964 |
} |
| 959 | 965 |
|
| 960 |
/// \brief Return a \ref |
|
| 966 |
/// \brief Return a \ref DigraphWriter class |
|
| 961 | 967 |
/// |
| 962 |
/// This function just returns a \ref GraphWriter class. |
|
| 963 |
/// \relates GraphWriter |
|
| 964 |
template <typename Graph> |
|
| 965 |
GraphWriter<Graph> graphWriter(const Graph& graph, const char* fn) {
|
|
| 966 |
|
|
| 968 |
/// This function just returns a \ref DigraphWriter class. |
|
| 969 |
/// \relates DigraphWriter |
|
| 970 |
/// \sa digraphWriter(const TDGR& digraph, std::ostream& os) |
|
| 971 |
template <typename TDGR> |
|
| 972 |
DigraphWriter<TDGR> digraphWriter(const TDGR& digraph, const char* fn) {
|
|
| 973 |
DigraphWriter<TDGR> tmp(digraph, fn); |
|
| 967 | 974 |
return tmp; |
| 968 | 975 |
} |
| 969 | 976 |
|
| 977 |
template <typename GR> |
|
| 978 |
class GraphWriter; |
|
| 979 |
|
|
| 980 |
template <typename TGR> |
|
| 981 |
GraphWriter<TGR> graphWriter(const TGR& graph, std::ostream& os = std::cout); |
|
| 982 |
template <typename TGR> |
|
| 983 |
GraphWriter<TGR> graphWriter(const TGR& graph, const std::string& fn); |
|
| 984 |
template <typename TGR> |
|
| 985 |
GraphWriter<TGR> graphWriter(const TGR& graph, const char* fn); |
|
| 986 |
|
|
| 970 | 987 |
/// \ingroup lemon_io |
| 971 | 988 |
/// |
| 972 | 989 |
/// \brief \ref lgf-format "LGF" writer for directed graphs |
| 973 | 990 |
/// |
| 974 | 991 |
/// This utility writes an \ref lgf-format "LGF" file. |
| 975 | 992 |
/// |
| 976 | 993 |
/// It can be used almost the same way as \c DigraphWriter. |
| 977 | 994 |
/// The only difference is that this class can handle edges and |
| 978 | 995 |
/// edge maps as well as arcs and arc maps. |
| 979 | 996 |
/// |
| 980 | 997 |
/// The arc maps are written into the file as two columns, the |
| 981 | 998 |
/// caption of the columns are the name of the map prefixed with \c |
| 982 | 999 |
/// '+' and \c '-'. The arcs are written into the \c \@attributes |
| 983 | 1000 |
/// section as a \c '+' or a \c '-' prefix (depends on the direction |
| 984 | 1001 |
/// of the arc) and the label of corresponding edge. |
| 985 |
template <typename |
|
| 1002 |
template <typename GR> |
|
| 986 | 1003 |
class GraphWriter {
|
| 987 | 1004 |
public: |
| 988 | 1005 |
|
| 989 |
typedef _Graph Graph; |
|
| 990 |
TEMPLATE_GRAPH_TYPEDEFS(Graph); |
|
| 1006 |
typedef GR Graph; |
|
| 1007 |
TEMPLATE_GRAPH_TYPEDEFS(GR); |
|
| 991 | 1008 |
|
| 992 | 1009 |
private: |
| 993 | 1010 |
|
| 994 | 1011 |
|
| 995 | 1012 |
std::ostream* _os; |
| 996 | 1013 |
bool local_os; |
| 997 | 1014 |
|
| 998 |
const |
|
| 1015 |
const GR& _graph; |
|
| 999 | 1016 |
|
| 1000 | 1017 |
std::string _nodes_caption; |
| 1001 | 1018 |
std::string _edges_caption; |
| 1002 | 1019 |
std::string _attributes_caption; |
| 1003 | 1020 |
|
| 1004 | 1021 |
typedef std::map<Node, std::string> NodeIndex; |
| 1005 | 1022 |
NodeIndex _node_index; |
| 1006 | 1023 |
typedef std::map<Edge, std::string> EdgeIndex; |
| 1007 | 1024 |
EdgeIndex _edge_index; |
| 1008 | 1025 |
|
| 1009 | 1026 |
typedef std::vector<std::pair<std::string, |
| 1010 | 1027 |
_writer_bits::MapStorageBase<Node>* > > NodeMaps; |
| 1011 | 1028 |
NodeMaps _node_maps; |
| 1012 | 1029 |
|
| 1013 | 1030 |
typedef std::vector<std::pair<std::string, |
| 1014 | 1031 |
_writer_bits::MapStorageBase<Edge>* > >EdgeMaps; |
| 1015 | 1032 |
EdgeMaps _edge_maps; |
| 1016 | 1033 |
|
| 1017 | 1034 |
typedef std::vector<std::pair<std::string, |
| 1018 | 1035 |
_writer_bits::ValueStorageBase*> > Attributes; |
| 1019 | 1036 |
Attributes _attributes; |
| 1020 | 1037 |
|
| 1021 | 1038 |
bool _skip_nodes; |
| 1022 | 1039 |
bool _skip_edges; |
| 1023 | 1040 |
|
| 1024 | 1041 |
public: |
| 1025 | 1042 |
|
| 1026 | 1043 |
/// \brief Constructor |
| 1027 | 1044 |
/// |
| 1028 | 1045 |
/// Construct a directed graph writer, which writes to the given |
| 1029 | 1046 |
/// output stream. |
| 1030 |
GraphWriter(const |
|
| 1047 |
GraphWriter(const GR& graph, std::ostream& os = std::cout) |
|
| 1031 | 1048 |
: _os(&os), local_os(false), _graph(graph), |
| 1032 | 1049 |
_skip_nodes(false), _skip_edges(false) {}
|
| 1033 | 1050 |
|
| 1034 | 1051 |
/// \brief Constructor |
| 1035 | 1052 |
/// |
| 1036 | 1053 |
/// Construct a directed graph writer, which writes to the given |
| 1037 | 1054 |
/// output file. |
| 1038 |
GraphWriter(const |
|
| 1055 |
GraphWriter(const GR& graph, const std::string& fn) |
|
| 1039 | 1056 |
: _os(new std::ofstream(fn.c_str())), local_os(true), _graph(graph), |
| 1040 | 1057 |
_skip_nodes(false), _skip_edges(false) {
|
| 1041 | 1058 |
if (!(*_os)) {
|
| 1042 | 1059 |
delete _os; |
| 1043 | 1060 |
throw IoError("Cannot write file", fn);
|
| 1044 | 1061 |
} |
| 1045 | 1062 |
} |
| 1046 | 1063 |
|
| 1047 | 1064 |
/// \brief Constructor |
| 1048 | 1065 |
/// |
| 1049 | 1066 |
/// Construct a directed graph writer, which writes to the given |
| 1050 | 1067 |
/// output file. |
| 1051 |
GraphWriter(const |
|
| 1068 |
GraphWriter(const GR& graph, const char* fn) |
|
| 1052 | 1069 |
: _os(new std::ofstream(fn)), local_os(true), _graph(graph), |
| 1053 | 1070 |
_skip_nodes(false), _skip_edges(false) {
|
| 1054 | 1071 |
if (!(*_os)) {
|
| 1055 | 1072 |
delete _os; |
| 1056 | 1073 |
throw IoError("Cannot write file", fn);
|
| 1057 | 1074 |
} |
| 1058 | 1075 |
} |
| 1059 | 1076 |
|
| 1060 | 1077 |
/// \brief Destructor |
| 1061 | 1078 |
~GraphWriter() {
|
| 1062 | 1079 |
for (typename NodeMaps::iterator it = _node_maps.begin(); |
| 1063 | 1080 |
it != _node_maps.end(); ++it) {
|
| 1064 | 1081 |
delete it->second; |
| 1065 | 1082 |
} |
| 1066 | 1083 |
|
| 1067 | 1084 |
for (typename EdgeMaps::iterator it = _edge_maps.begin(); |
| 1068 | 1085 |
it != _edge_maps.end(); ++it) {
|
| 1069 | 1086 |
delete it->second; |
| 1070 | 1087 |
} |
| 1071 | 1088 |
|
| 1072 | 1089 |
for (typename Attributes::iterator it = _attributes.begin(); |
| 1073 | 1090 |
it != _attributes.end(); ++it) {
|
| 1074 | 1091 |
delete it->second; |
| 1075 | 1092 |
} |
| 1076 | 1093 |
|
| 1077 | 1094 |
if (local_os) {
|
| 1078 | 1095 |
delete _os; |
| 1079 | 1096 |
} |
| 1080 | 1097 |
} |
| 1081 | 1098 |
|
| 1082 | 1099 |
private: |
| 1083 | 1100 |
|
| 1084 |
friend GraphWriter<Graph> graphWriter<>(const Graph& graph, |
|
| 1085 |
std::ostream& os); |
|
| 1086 |
friend GraphWriter<Graph> graphWriter<>(const Graph& graph, |
|
| 1087 |
const std::string& fn); |
|
| 1088 |
friend GraphWriter<Graph> graphWriter<>(const Graph& graph, |
|
| 1089 |
const char *fn); |
|
| 1090 |
|
|
| 1101 |
template <typename TGR> |
|
| 1102 |
friend GraphWriter<TGR> graphWriter(const TGR& graph, std::ostream& os); |
|
| 1103 |
template <typename TGR> |
|
| 1104 |
friend GraphWriter<TGR> graphWriter(const TGR& graph, |
|
| 1105 |
const std::string& fn); |
|
| 1106 |
template <typename TGR> |
|
| 1107 |
friend GraphWriter<TGR> graphWriter(const TGR& graph, const char *fn); |
|
| 1108 |
|
|
| 1091 | 1109 |
GraphWriter(GraphWriter& other) |
| 1092 | 1110 |
: _os(other._os), local_os(other.local_os), _graph(other._graph), |
| 1093 | 1111 |
_skip_nodes(other._skip_nodes), _skip_edges(other._skip_edges) {
|
| 1094 | 1112 |
|
| 1095 | 1113 |
other._os = 0; |
| 1096 | 1114 |
other.local_os = false; |
| 1097 | 1115 |
|
| 1098 | 1116 |
_node_index.swap(other._node_index); |
| 1099 | 1117 |
_edge_index.swap(other._edge_index); |
| 1100 | 1118 |
|
| 1101 | 1119 |
_node_maps.swap(other._node_maps); |
| 1102 | 1120 |
_edge_maps.swap(other._edge_maps); |
| 1103 | 1121 |
_attributes.swap(other._attributes); |
| 1104 | 1122 |
|
| 1105 | 1123 |
_nodes_caption = other._nodes_caption; |
| 1106 | 1124 |
_edges_caption = other._edges_caption; |
| 1107 | 1125 |
_attributes_caption = other._attributes_caption; |
| 1108 | 1126 |
} |
| 1109 | 1127 |
|
| 1110 | 1128 |
GraphWriter& operator=(const GraphWriter&); |
| 1111 | 1129 |
|
| 1112 | 1130 |
public: |
| 1113 | 1131 |
|
| 1114 |
/// \name Writing |
|
| 1132 |
/// \name Writing Rules |
|
| 1115 | 1133 |
/// @{
|
| 1116 | 1134 |
|
| 1117 | 1135 |
/// \brief Node map writing rule |
| 1118 | 1136 |
/// |
| 1119 | 1137 |
/// Add a node map writing rule to the writer. |
| 1120 | 1138 |
template <typename Map> |
| 1121 | 1139 |
GraphWriter& nodeMap(const std::string& caption, const Map& map) {
|
| 1122 | 1140 |
checkConcept<concepts::ReadMap<Node, typename Map::Value>, Map>(); |
| 1123 | 1141 |
_writer_bits::MapStorageBase<Node>* storage = |
| 1124 | 1142 |
new _writer_bits::MapStorage<Node, Map>(map); |
| 1125 | 1143 |
_node_maps.push_back(std::make_pair(caption, storage)); |
| 1126 | 1144 |
return *this; |
| 1127 | 1145 |
} |
| 1128 | 1146 |
|
| 1129 | 1147 |
/// \brief Node map writing rule |
| 1130 | 1148 |
/// |
| 1131 | 1149 |
/// Add a node map writing rule with specialized converter to the |
| 1132 | 1150 |
/// writer. |
| 1133 | 1151 |
template <typename Map, typename Converter> |
| 1134 | 1152 |
GraphWriter& nodeMap(const std::string& caption, const Map& map, |
| 1135 | 1153 |
const Converter& converter = Converter()) {
|
| 1136 | 1154 |
checkConcept<concepts::ReadMap<Node, typename Map::Value>, Map>(); |
| 1137 | 1155 |
_writer_bits::MapStorageBase<Node>* storage = |
| 1138 | 1156 |
new _writer_bits::MapStorage<Node, Map, Converter>(map, converter); |
| 1139 | 1157 |
_node_maps.push_back(std::make_pair(caption, storage)); |
| 1140 | 1158 |
return *this; |
| 1141 | 1159 |
} |
| 1142 | 1160 |
|
| 1143 | 1161 |
/// \brief Edge map writing rule |
| 1144 | 1162 |
/// |
| 1145 | 1163 |
/// Add an edge map writing rule to the writer. |
| 1146 | 1164 |
template <typename Map> |
| 1147 | 1165 |
GraphWriter& edgeMap(const std::string& caption, const Map& map) {
|
| 1148 | 1166 |
checkConcept<concepts::ReadMap<Edge, typename Map::Value>, Map>(); |
| 1149 | 1167 |
_writer_bits::MapStorageBase<Edge>* storage = |
| 1150 | 1168 |
new _writer_bits::MapStorage<Edge, Map>(map); |
| 1151 | 1169 |
_edge_maps.push_back(std::make_pair(caption, storage)); |
| 1152 | 1170 |
return *this; |
| 1153 | 1171 |
} |
| 1154 | 1172 |
|
| 1155 | 1173 |
/// \brief Edge map writing rule |
| 1156 | 1174 |
/// |
| 1157 | 1175 |
/// Add an edge map writing rule with specialized converter to the |
| 1158 | 1176 |
/// writer. |
| 1159 | 1177 |
template <typename Map, typename Converter> |
| 1160 | 1178 |
GraphWriter& edgeMap(const std::string& caption, const Map& map, |
| 1161 | 1179 |
const Converter& converter = Converter()) {
|
| 1162 | 1180 |
checkConcept<concepts::ReadMap<Edge, typename Map::Value>, Map>(); |
| 1163 | 1181 |
_writer_bits::MapStorageBase<Edge>* storage = |
| 1164 | 1182 |
new _writer_bits::MapStorage<Edge, Map, Converter>(map, converter); |
| 1165 | 1183 |
_edge_maps.push_back(std::make_pair(caption, storage)); |
| 1166 | 1184 |
return *this; |
| 1167 | 1185 |
} |
| 1168 | 1186 |
|
| 1169 | 1187 |
/// \brief Arc map writing rule |
| 1170 | 1188 |
/// |
| 1171 | 1189 |
/// Add an arc map writing rule to the writer. |
| 1172 | 1190 |
template <typename Map> |
| 1173 | 1191 |
GraphWriter& arcMap(const std::string& caption, const Map& map) {
|
| 1174 | 1192 |
checkConcept<concepts::ReadMap<Arc, typename Map::Value>, Map>(); |
| 1175 | 1193 |
_writer_bits::MapStorageBase<Edge>* forward_storage = |
| 1176 |
new _writer_bits::GraphArcMapStorage< |
|
| 1194 |
new _writer_bits::GraphArcMapStorage<GR, true, Map>(_graph, map); |
|
| 1177 | 1195 |
_edge_maps.push_back(std::make_pair('+' + caption, forward_storage));
|
| 1178 | 1196 |
_writer_bits::MapStorageBase<Edge>* backward_storage = |
| 1179 |
new _writer_bits::GraphArcMapStorage< |
|
| 1197 |
new _writer_bits::GraphArcMapStorage<GR, false, Map>(_graph, map); |
|
| 1180 | 1198 |
_edge_maps.push_back(std::make_pair('-' + caption, backward_storage));
|
| 1181 | 1199 |
return *this; |
| 1182 | 1200 |
} |
| 1183 | 1201 |
|
| 1184 | 1202 |
/// \brief Arc map writing rule |
| 1185 | 1203 |
/// |
| 1186 | 1204 |
/// Add an arc map writing rule with specialized converter to the |
| 1187 | 1205 |
/// writer. |
| 1188 | 1206 |
template <typename Map, typename Converter> |
| 1189 | 1207 |
GraphWriter& arcMap(const std::string& caption, const Map& map, |
| 1190 | 1208 |
const Converter& converter = Converter()) {
|
| 1191 | 1209 |
checkConcept<concepts::ReadMap<Arc, typename Map::Value>, Map>(); |
| 1192 | 1210 |
_writer_bits::MapStorageBase<Edge>* forward_storage = |
| 1193 |
new _writer_bits::GraphArcMapStorage< |
|
| 1211 |
new _writer_bits::GraphArcMapStorage<GR, true, Map, Converter> |
|
| 1194 | 1212 |
(_graph, map, converter); |
| 1195 | 1213 |
_edge_maps.push_back(std::make_pair('+' + caption, forward_storage));
|
| 1196 | 1214 |
_writer_bits::MapStorageBase<Edge>* backward_storage = |
| 1197 |
new _writer_bits::GraphArcMapStorage< |
|
| 1215 |
new _writer_bits::GraphArcMapStorage<GR, false, Map, Converter> |
|
| 1198 | 1216 |
(_graph, map, converter); |
| 1199 | 1217 |
_edge_maps.push_back(std::make_pair('-' + caption, backward_storage));
|
| 1200 | 1218 |
return *this; |
| 1201 | 1219 |
} |
| 1202 | 1220 |
|
| 1203 | 1221 |
/// \brief Attribute writing rule |
| 1204 | 1222 |
/// |
| 1205 | 1223 |
/// Add an attribute writing rule to the writer. |
| 1206 | 1224 |
template <typename Value> |
| 1207 | 1225 |
GraphWriter& attribute(const std::string& caption, const Value& value) {
|
| 1208 | 1226 |
_writer_bits::ValueStorageBase* storage = |
| 1209 | 1227 |
new _writer_bits::ValueStorage<Value>(value); |
| 1210 | 1228 |
_attributes.push_back(std::make_pair(caption, storage)); |
| 1211 | 1229 |
return *this; |
| 1212 | 1230 |
} |
| 1213 | 1231 |
|
| 1214 | 1232 |
/// \brief Attribute writing rule |
| 1215 | 1233 |
/// |
| 1216 | 1234 |
/// Add an attribute writing rule with specialized converter to the |
| 1217 | 1235 |
/// writer. |
| 1218 | 1236 |
template <typename Value, typename Converter> |
| 1219 | 1237 |
GraphWriter& attribute(const std::string& caption, const Value& value, |
| 1220 | 1238 |
const Converter& converter = Converter()) {
|
| 1221 | 1239 |
_writer_bits::ValueStorageBase* storage = |
| 1222 | 1240 |
new _writer_bits::ValueStorage<Value, Converter>(value, converter); |
| 1223 | 1241 |
_attributes.push_back(std::make_pair(caption, storage)); |
| 1224 | 1242 |
return *this; |
| 1225 | 1243 |
} |
| 1226 | 1244 |
|
| 1227 | 1245 |
/// \brief Node writing rule |
| 1228 | 1246 |
/// |
| 1229 | 1247 |
/// Add a node writing rule to the writer. |
| 1230 | 1248 |
GraphWriter& node(const std::string& caption, const Node& node) {
|
| 1231 | 1249 |
typedef _writer_bits::MapLookUpConverter<Node> Converter; |
| 1232 | 1250 |
Converter converter(_node_index); |
| 1233 | 1251 |
_writer_bits::ValueStorageBase* storage = |
| 1234 | 1252 |
new _writer_bits::ValueStorage<Node, Converter>(node, converter); |
| 1235 | 1253 |
_attributes.push_back(std::make_pair(caption, storage)); |
| 1236 | 1254 |
return *this; |
| 1237 | 1255 |
} |
| 1238 | 1256 |
|
| 1239 | 1257 |
/// \brief Edge writing rule |
| 1240 | 1258 |
/// |
| 1241 | 1259 |
/// Add an edge writing rule to writer. |
| 1242 | 1260 |
GraphWriter& edge(const std::string& caption, const Edge& edge) {
|
| 1243 | 1261 |
typedef _writer_bits::MapLookUpConverter<Edge> Converter; |
| 1244 | 1262 |
Converter converter(_edge_index); |
| 1245 | 1263 |
_writer_bits::ValueStorageBase* storage = |
| 1246 | 1264 |
new _writer_bits::ValueStorage<Edge, Converter>(edge, converter); |
| 1247 | 1265 |
_attributes.push_back(std::make_pair(caption, storage)); |
| 1248 | 1266 |
return *this; |
| 1249 | 1267 |
} |
| 1250 | 1268 |
|
| 1251 | 1269 |
/// \brief Arc writing rule |
| 1252 | 1270 |
/// |
| 1253 | 1271 |
/// Add an arc writing rule to writer. |
| 1254 | 1272 |
GraphWriter& arc(const std::string& caption, const Arc& arc) {
|
| 1255 |
typedef _writer_bits::GraphArcLookUpConverter< |
|
| 1273 |
typedef _writer_bits::GraphArcLookUpConverter<GR> Converter; |
|
| 1256 | 1274 |
Converter converter(_graph, _edge_index); |
| 1257 | 1275 |
_writer_bits::ValueStorageBase* storage = |
| 1258 | 1276 |
new _writer_bits::ValueStorage<Arc, Converter>(arc, converter); |
| 1259 | 1277 |
_attributes.push_back(std::make_pair(caption, storage)); |
| 1260 | 1278 |
return *this; |
| 1261 | 1279 |
} |
| 1262 | 1280 |
|
| 1263 |
/// \name Section |
|
| 1281 |
/// \name Section Captions |
|
| 1264 | 1282 |
/// @{
|
| 1265 | 1283 |
|
| 1266 | 1284 |
/// \brief Add an additional caption to the \c \@nodes section |
| 1267 | 1285 |
/// |
| 1268 | 1286 |
/// Add an additional caption to the \c \@nodes section. |
| 1269 | 1287 |
GraphWriter& nodes(const std::string& caption) {
|
| 1270 | 1288 |
_nodes_caption = caption; |
| 1271 | 1289 |
return *this; |
| 1272 | 1290 |
} |
| 1273 | 1291 |
|
| 1274 | 1292 |
/// \brief Add an additional caption to the \c \@arcs section |
| 1275 | 1293 |
/// |
| 1276 | 1294 |
/// Add an additional caption to the \c \@arcs section. |
| 1277 | 1295 |
GraphWriter& edges(const std::string& caption) {
|
| 1278 | 1296 |
_edges_caption = caption; |
| 1279 | 1297 |
return *this; |
| 1280 | 1298 |
} |
| 1281 | 1299 |
|
| 1282 | 1300 |
/// \brief Add an additional caption to the \c \@attributes section |
| 1283 | 1301 |
/// |
| 1284 | 1302 |
/// Add an additional caption to the \c \@attributes section. |
| 1285 | 1303 |
GraphWriter& attributes(const std::string& caption) {
|
| 1286 | 1304 |
_attributes_caption = caption; |
| 1287 | 1305 |
return *this; |
| 1288 | 1306 |
} |
| 1289 | 1307 |
|
| 1290 |
/// \name Skipping |
|
| 1308 |
/// \name Skipping Section |
|
| 1291 | 1309 |
/// @{
|
| 1292 | 1310 |
|
| 1293 | 1311 |
/// \brief Skip writing the node set |
| 1294 | 1312 |
/// |
| 1295 | 1313 |
/// The \c \@nodes section will not be written to the stream. |
| 1296 | 1314 |
GraphWriter& skipNodes() {
|
| 1297 | 1315 |
LEMON_ASSERT(!_skip_nodes, "Multiple usage of skipNodes() member"); |
| 1298 | 1316 |
_skip_nodes = true; |
| 1299 | 1317 |
return *this; |
| 1300 | 1318 |
} |
| 1301 | 1319 |
|
| 1302 | 1320 |
/// \brief Skip writing edge set |
| 1303 | 1321 |
/// |
| 1304 | 1322 |
/// The \c \@edges section will not be written to the stream. |
| 1305 | 1323 |
GraphWriter& skipEdges() {
|
| 1306 | 1324 |
LEMON_ASSERT(!_skip_edges, "Multiple usage of skipEdges() member"); |
| 1307 | 1325 |
_skip_edges = true; |
| 1308 | 1326 |
return *this; |
| 1309 | 1327 |
} |
| 1310 | 1328 |
|
| 1311 | 1329 |
/// @} |
| 1312 | 1330 |
|
| 1313 | 1331 |
private: |
| 1314 | 1332 |
|
| 1315 | 1333 |
void writeNodes() {
|
| 1316 | 1334 |
_writer_bits::MapStorageBase<Node>* label = 0; |
| 1317 | 1335 |
for (typename NodeMaps::iterator it = _node_maps.begin(); |
| 1318 | 1336 |
it != _node_maps.end(); ++it) {
|
| 1319 | 1337 |
if (it->first == "label") {
|
| 1320 | 1338 |
label = it->second; |
| 1321 | 1339 |
break; |
| 1322 | 1340 |
} |
| 1323 | 1341 |
} |
| 1324 | 1342 |
|
| 1325 | 1343 |
*_os << "@nodes"; |
| 1326 | 1344 |
if (!_nodes_caption.empty()) {
|
| 1327 | 1345 |
_writer_bits::writeToken(*_os << ' ', _nodes_caption); |
| 1328 | 1346 |
} |
| 1329 | 1347 |
*_os << std::endl; |
| 1330 | 1348 |
|
| 1331 | 1349 |
if (label == 0) {
|
| 1332 | 1350 |
*_os << "label" << '\t'; |
| 1333 | 1351 |
} |
| 1334 | 1352 |
for (typename NodeMaps::iterator it = _node_maps.begin(); |
| 1335 | 1353 |
it != _node_maps.end(); ++it) {
|
| 1336 | 1354 |
_writer_bits::writeToken(*_os, it->first) << '\t'; |
| 1337 | 1355 |
} |
| 1338 | 1356 |
*_os << std::endl; |
| 1339 | 1357 |
|
| 1340 | 1358 |
std::vector<Node> nodes; |
| 1341 | 1359 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 1342 | 1360 |
nodes.push_back(n); |
| 1343 | 1361 |
} |
| 1344 | 1362 |
|
| 1345 | 1363 |
if (label == 0) {
|
| 1346 |
IdMap<Graph, Node> id_map(_graph); |
|
| 1347 |
_writer_bits::MapLess<IdMap<Graph, Node> > id_less(id_map); |
|
| 1364 |
IdMap<GR, Node> id_map(_graph); |
|
| 1365 |
_writer_bits::MapLess<IdMap<GR, Node> > id_less(id_map); |
|
| 1348 | 1366 |
std::sort(nodes.begin(), nodes.end(), id_less); |
| 1349 | 1367 |
} else {
|
| 1350 | 1368 |
label->sort(nodes); |
| 1351 | 1369 |
} |
| 1352 | 1370 |
|
| 1353 | 1371 |
for (int i = 0; i < static_cast<int>(nodes.size()); ++i) {
|
| 1354 | 1372 |
Node n = nodes[i]; |
| 1355 | 1373 |
if (label == 0) {
|
| 1356 | 1374 |
std::ostringstream os; |
| 1357 | 1375 |
os << _graph.id(n); |
| 1358 | 1376 |
_writer_bits::writeToken(*_os, os.str()); |
| 1359 | 1377 |
*_os << '\t'; |
| 1360 | 1378 |
_node_index.insert(std::make_pair(n, os.str())); |
| 1361 | 1379 |
} |
| 1362 | 1380 |
for (typename NodeMaps::iterator it = _node_maps.begin(); |
| 1363 | 1381 |
it != _node_maps.end(); ++it) {
|
| 1364 | 1382 |
std::string value = it->second->get(n); |
| 1365 | 1383 |
_writer_bits::writeToken(*_os, value); |
| 1366 | 1384 |
if (it->first == "label") {
|
| 1367 | 1385 |
_node_index.insert(std::make_pair(n, value)); |
| 1368 | 1386 |
} |
| 1369 | 1387 |
*_os << '\t'; |
| 1370 | 1388 |
} |
| 1371 | 1389 |
*_os << std::endl; |
| 1372 | 1390 |
} |
| 1373 | 1391 |
} |
| 1374 | 1392 |
|
| 1375 | 1393 |
void createNodeIndex() {
|
| 1376 | 1394 |
_writer_bits::MapStorageBase<Node>* label = 0; |
| 1377 | 1395 |
for (typename NodeMaps::iterator it = _node_maps.begin(); |
| 1378 | 1396 |
it != _node_maps.end(); ++it) {
|
| 1379 | 1397 |
if (it->first == "label") {
|
| 1380 | 1398 |
label = it->second; |
| 1381 | 1399 |
break; |
| 1382 | 1400 |
} |
| 1383 | 1401 |
} |
| 1384 | 1402 |
|
| 1385 | 1403 |
if (label == 0) {
|
| 1386 | 1404 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 1387 | 1405 |
std::ostringstream os; |
| 1388 | 1406 |
os << _graph.id(n); |
| 1389 | 1407 |
_node_index.insert(std::make_pair(n, os.str())); |
| 1390 | 1408 |
} |
| 1391 | 1409 |
} else {
|
| 1392 | 1410 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 1393 | 1411 |
std::string value = label->get(n); |
| 1394 | 1412 |
_node_index.insert(std::make_pair(n, value)); |
| 1395 | 1413 |
} |
| 1396 | 1414 |
} |
| 1397 | 1415 |
} |
| 1398 | 1416 |
|
| 1399 | 1417 |
void writeEdges() {
|
| 1400 | 1418 |
_writer_bits::MapStorageBase<Edge>* label = 0; |
| 1401 | 1419 |
for (typename EdgeMaps::iterator it = _edge_maps.begin(); |
| 1402 | 1420 |
it != _edge_maps.end(); ++it) {
|
| 1403 | 1421 |
if (it->first == "label") {
|
| 1404 | 1422 |
label = it->second; |
| 1405 | 1423 |
break; |
| 1406 | 1424 |
} |
| 1407 | 1425 |
} |
| 1408 | 1426 |
|
| 1409 | 1427 |
*_os << "@edges"; |
| 1410 | 1428 |
if (!_edges_caption.empty()) {
|
| 1411 | 1429 |
_writer_bits::writeToken(*_os << ' ', _edges_caption); |
| 1412 | 1430 |
} |
| 1413 | 1431 |
*_os << std::endl; |
| 1414 | 1432 |
|
| 1415 | 1433 |
*_os << '\t' << '\t'; |
| 1416 | 1434 |
if (label == 0) {
|
| 1417 | 1435 |
*_os << "label" << '\t'; |
| 1418 | 1436 |
} |
| 1419 | 1437 |
for (typename EdgeMaps::iterator it = _edge_maps.begin(); |
| 1420 | 1438 |
it != _edge_maps.end(); ++it) {
|
| 1421 | 1439 |
_writer_bits::writeToken(*_os, it->first) << '\t'; |
| 1422 | 1440 |
} |
| 1423 | 1441 |
*_os << std::endl; |
| 1424 | 1442 |
|
| 1425 | 1443 |
std::vector<Edge> edges; |
| 1426 | 1444 |
for (EdgeIt n(_graph); n != INVALID; ++n) {
|
| 1427 | 1445 |
edges.push_back(n); |
| 1428 | 1446 |
} |
| 1429 | 1447 |
|
| 1430 | 1448 |
if (label == 0) {
|
| 1431 |
IdMap<Graph, Edge> id_map(_graph); |
|
| 1432 |
_writer_bits::MapLess<IdMap<Graph, Edge> > id_less(id_map); |
|
| 1449 |
IdMap<GR, Edge> id_map(_graph); |
|
| 1450 |
_writer_bits::MapLess<IdMap<GR, Edge> > id_less(id_map); |
|
| 1433 | 1451 |
std::sort(edges.begin(), edges.end(), id_less); |
| 1434 | 1452 |
} else {
|
| 1435 | 1453 |
label->sort(edges); |
| 1436 | 1454 |
} |
| 1437 | 1455 |
|
| 1438 | 1456 |
for (int i = 0; i < static_cast<int>(edges.size()); ++i) {
|
| 1439 | 1457 |
Edge e = edges[i]; |
| 1440 | 1458 |
_writer_bits::writeToken(*_os, _node_index. |
| 1441 | 1459 |
find(_graph.u(e))->second); |
| 1442 | 1460 |
*_os << '\t'; |
| 1443 | 1461 |
_writer_bits::writeToken(*_os, _node_index. |
| 1444 | 1462 |
find(_graph.v(e))->second); |
| 1445 | 1463 |
*_os << '\t'; |
| 1446 | 1464 |
if (label == 0) {
|
| 1447 | 1465 |
std::ostringstream os; |
| 1448 | 1466 |
os << _graph.id(e); |
| 1449 | 1467 |
_writer_bits::writeToken(*_os, os.str()); |
| 1450 | 1468 |
*_os << '\t'; |
| 1451 | 1469 |
_edge_index.insert(std::make_pair(e, os.str())); |
| 1452 | 1470 |
} |
| 1453 | 1471 |
for (typename EdgeMaps::iterator it = _edge_maps.begin(); |
| 1454 | 1472 |
it != _edge_maps.end(); ++it) {
|
| 1455 | 1473 |
std::string value = it->second->get(e); |
| 1456 | 1474 |
_writer_bits::writeToken(*_os, value); |
| 1457 | 1475 |
if (it->first == "label") {
|
| 1458 | 1476 |
_edge_index.insert(std::make_pair(e, value)); |
| 1459 | 1477 |
} |
| 1460 | 1478 |
*_os << '\t'; |
| 1461 | 1479 |
} |
| 1462 | 1480 |
*_os << std::endl; |
| 1463 | 1481 |
} |
| 1464 | 1482 |
} |
| 1465 | 1483 |
|
| 1466 | 1484 |
void createEdgeIndex() {
|
| 1467 | 1485 |
_writer_bits::MapStorageBase<Edge>* label = 0; |
| 1468 | 1486 |
for (typename EdgeMaps::iterator it = _edge_maps.begin(); |
| 1469 | 1487 |
it != _edge_maps.end(); ++it) {
|
| 1470 | 1488 |
if (it->first == "label") {
|
| 1471 | 1489 |
label = it->second; |
| 1472 | 1490 |
break; |
| 1473 | 1491 |
} |
| 1474 | 1492 |
} |
| 1475 | 1493 |
|
| 1476 | 1494 |
if (label == 0) {
|
| 1477 | 1495 |
for (EdgeIt e(_graph); e != INVALID; ++e) {
|
| 1478 | 1496 |
std::ostringstream os; |
| 1479 | 1497 |
os << _graph.id(e); |
| 1480 | 1498 |
_edge_index.insert(std::make_pair(e, os.str())); |
| 1481 | 1499 |
} |
| 1482 | 1500 |
} else {
|
| 1483 | 1501 |
for (EdgeIt e(_graph); e != INVALID; ++e) {
|
| 1484 | 1502 |
std::string value = label->get(e); |
| 1485 | 1503 |
_edge_index.insert(std::make_pair(e, value)); |
| 1486 | 1504 |
} |
| 1487 | 1505 |
} |
| 1488 | 1506 |
} |
| 1489 | 1507 |
|
| 1490 | 1508 |
void writeAttributes() {
|
| 1491 | 1509 |
if (_attributes.empty()) return; |
| 1492 | 1510 |
*_os << "@attributes"; |
| 1493 | 1511 |
if (!_attributes_caption.empty()) {
|
| 1494 | 1512 |
_writer_bits::writeToken(*_os << ' ', _attributes_caption); |
| 1495 | 1513 |
} |
| 1496 | 1514 |
*_os << std::endl; |
| 1497 | 1515 |
for (typename Attributes::iterator it = _attributes.begin(); |
| 1498 | 1516 |
it != _attributes.end(); ++it) {
|
| 1499 | 1517 |
_writer_bits::writeToken(*_os, it->first) << ' '; |
| 1500 | 1518 |
_writer_bits::writeToken(*_os, it->second->get()); |
| 1501 | 1519 |
*_os << std::endl; |
| 1502 | 1520 |
} |
| 1503 | 1521 |
} |
| 1504 | 1522 |
|
| 1505 | 1523 |
public: |
| 1506 | 1524 |
|
| 1507 |
/// \name Execution of the |
|
| 1525 |
/// \name Execution of the Writer |
|
| 1508 | 1526 |
/// @{
|
| 1509 | 1527 |
|
| 1510 | 1528 |
/// \brief Start the batch processing |
| 1511 | 1529 |
/// |
| 1512 | 1530 |
/// This function starts the batch processing. |
| 1513 | 1531 |
void run() {
|
| 1514 | 1532 |
if (!_skip_nodes) {
|
| 1515 | 1533 |
writeNodes(); |
| 1516 | 1534 |
} else {
|
| 1517 | 1535 |
createNodeIndex(); |
| 1518 | 1536 |
} |
| 1519 | 1537 |
if (!_skip_edges) {
|
| 1520 | 1538 |
writeEdges(); |
| 1521 | 1539 |
} else {
|
| 1522 | 1540 |
createEdgeIndex(); |
| 1523 | 1541 |
} |
| 1524 | 1542 |
writeAttributes(); |
| 1525 | 1543 |
} |
| 1526 | 1544 |
|
| 1527 | 1545 |
/// \brief Give back the stream of the writer |
| 1528 | 1546 |
/// |
| 1529 | 1547 |
/// Give back the stream of the writer |
| 1530 | 1548 |
std::ostream& ostream() {
|
| 1531 | 1549 |
return *_os; |
| 1532 | 1550 |
} |
| 1533 | 1551 |
|
| 1534 | 1552 |
/// @} |
| 1535 | 1553 |
}; |
| 1536 | 1554 |
|
| 1555 |
/// \ingroup lemon_io |
|
| 1556 |
/// |
|
| 1557 |
/// \brief Return a \ref GraphWriter class |
|
| 1558 |
/// |
|
| 1559 |
/// This function just returns a \ref GraphWriter class. |
|
| 1560 |
/// |
|
| 1561 |
/// With this function a graph can be write to a file or output |
|
| 1562 |
/// stream in \ref lgf-format "LGF" format with several maps and |
|
| 1563 |
/// attributes. For example, with the following code a weighted |
|
| 1564 |
/// matching problem can be written to the standard output, i.e. a |
|
| 1565 |
/// graph with a \e weight map on the edges: |
|
| 1566 |
/// |
|
| 1567 |
///\code |
|
| 1568 |
///ListGraph graph; |
|
| 1569 |
///ListGraph::EdgeMap<int> weight(graph); |
|
| 1570 |
/// // Setting the weight map |
|
| 1571 |
///graphWriter(graph, std::cout). |
|
| 1572 |
/// edgeMap("weight", weight).
|
|
| 1573 |
/// run(); |
|
| 1574 |
///\endcode |
|
| 1575 |
/// |
|
| 1576 |
/// For a complete documentation, please see the \ref GraphWriter |
|
| 1577 |
/// class documentation. |
|
| 1578 |
/// \warning Don't forget to put the \ref GraphWriter::run() "run()" |
|
| 1579 |
/// to the end of the parameter list. |
|
| 1580 |
/// \relates GraphWriter |
|
| 1581 |
/// \sa graphWriter(const TGR& graph, const std::string& fn) |
|
| 1582 |
/// \sa graphWriter(const TGR& graph, const char* fn) |
|
| 1583 |
template <typename TGR> |
|
| 1584 |
GraphWriter<TGR> graphWriter(const TGR& graph, std::ostream& os) {
|
|
| 1585 |
GraphWriter<TGR> tmp(graph, os); |
|
| 1586 |
return tmp; |
|
| 1587 |
} |
|
| 1588 |
|
|
| 1589 |
/// \brief Return a \ref GraphWriter class |
|
| 1590 |
/// |
|
| 1591 |
/// This function just returns a \ref GraphWriter class. |
|
| 1592 |
/// \relates GraphWriter |
|
| 1593 |
/// \sa graphWriter(const TGR& graph, std::ostream& os) |
|
| 1594 |
template <typename TGR> |
|
| 1595 |
GraphWriter<TGR> graphWriter(const TGR& graph, const std::string& fn) {
|
|
| 1596 |
GraphWriter<TGR> tmp(graph, fn); |
|
| 1597 |
return tmp; |
|
| 1598 |
} |
|
| 1599 |
|
|
| 1600 |
/// \brief Return a \ref GraphWriter class |
|
| 1601 |
/// |
|
| 1602 |
/// This function just returns a \ref GraphWriter class. |
|
| 1603 |
/// \relates GraphWriter |
|
| 1604 |
/// \sa graphWriter(const TGR& graph, std::ostream& os) |
|
| 1605 |
template <typename TGR> |
|
| 1606 |
GraphWriter<TGR> graphWriter(const TGR& graph, const char* fn) {
|
|
| 1607 |
GraphWriter<TGR> tmp(graph, fn); |
|
| 1608 |
return tmp; |
|
| 1609 |
} |
|
| 1610 |
|
|
| 1537 | 1611 |
class SectionWriter; |
| 1538 | 1612 |
|
| 1539 | 1613 |
SectionWriter sectionWriter(std::istream& is); |
| 1540 | 1614 |
SectionWriter sectionWriter(const std::string& fn); |
| 1541 | 1615 |
SectionWriter sectionWriter(const char* fn); |
| 1542 | 1616 |
|
| 1543 | 1617 |
/// \ingroup lemon_io |
| 1544 | 1618 |
/// |
| 1545 | 1619 |
/// \brief Section writer class |
| 1546 | 1620 |
/// |
| 1547 | 1621 |
/// In the \ref lgf-format "LGF" file extra sections can be placed, |
| 1548 | 1622 |
/// which contain any data in arbitrary format. Such sections can be |
| 1549 | 1623 |
/// written with this class. A writing rule can be added to the |
| 1550 | 1624 |
/// class with two different functions. With the \c sectionLines() |
| 1551 | 1625 |
/// function a generator can write the section line-by-line, while |
| 1552 | 1626 |
/// with the \c sectionStream() member the section can be written to |
| 1553 | 1627 |
/// an output stream. |
| 1554 | 1628 |
class SectionWriter {
|
| 1555 | 1629 |
private: |
| 1556 | 1630 |
|
| 1557 | 1631 |
std::ostream* _os; |
| 1558 | 1632 |
bool local_os; |
| 1559 | 1633 |
|
| 1560 | 1634 |
typedef std::vector<std::pair<std::string, _writer_bits::Section*> > |
| 1561 | 1635 |
Sections; |
| 1562 | 1636 |
|
| 1563 | 1637 |
Sections _sections; |
| 1564 | 1638 |
|
| 1565 | 1639 |
public: |
| 1566 | 1640 |
|
| 1567 | 1641 |
/// \brief Constructor |
| 1568 | 1642 |
/// |
| 1569 | 1643 |
/// Construct a section writer, which writes to the given output |
| 1570 | 1644 |
/// stream. |
| 1571 | 1645 |
SectionWriter(std::ostream& os) |
| 1572 | 1646 |
: _os(&os), local_os(false) {}
|
| 1573 | 1647 |
|
| 1574 | 1648 |
/// \brief Constructor |
| 1575 | 1649 |
/// |
| 1576 | 1650 |
/// Construct a section writer, which writes into the given file. |
| 1577 | 1651 |
SectionWriter(const std::string& fn) |
| 1578 | 1652 |
: _os(new std::ofstream(fn.c_str())), local_os(true) {
|
| 1579 | 1653 |
if (!(*_os)) {
|
| 1580 | 1654 |
delete _os; |
| 1581 | 1655 |
throw IoError("Cannot write file", fn);
|
| 1582 | 1656 |
} |
| 1583 | 1657 |
} |
| 1584 | 1658 |
|
| 1585 | 1659 |
/// \brief Constructor |
| 1586 | 1660 |
/// |
| 1587 | 1661 |
/// Construct a section writer, which writes into the given file. |
| 1588 | 1662 |
SectionWriter(const char* fn) |
| 1589 | 1663 |
: _os(new std::ofstream(fn)), local_os(true) {
|
| 1590 | 1664 |
if (!(*_os)) {
|
| 1591 | 1665 |
delete _os; |
| 1592 | 1666 |
throw IoError("Cannot write file", fn);
|
| 1593 | 1667 |
} |
| 1594 | 1668 |
} |
| 1595 | 1669 |
|
| 1596 | 1670 |
/// \brief Destructor |
| 1597 | 1671 |
~SectionWriter() {
|
| 1598 | 1672 |
for (Sections::iterator it = _sections.begin(); |
| 1599 | 1673 |
it != _sections.end(); ++it) {
|
| 1600 | 1674 |
delete it->second; |
| 1601 | 1675 |
} |
| 1602 | 1676 |
|
| 1603 | 1677 |
if (local_os) {
|
| 1604 | 1678 |
delete _os; |
| 1605 | 1679 |
} |
| 1606 | 1680 |
|
| 1607 | 1681 |
} |
| 1608 | 1682 |
|
| 1609 | 1683 |
private: |
| 1610 | 1684 |
|
| 1611 | 1685 |
friend SectionWriter sectionWriter(std::ostream& os); |
| 1612 | 1686 |
friend SectionWriter sectionWriter(const std::string& fn); |
| 1613 | 1687 |
friend SectionWriter sectionWriter(const char* fn); |
| 1614 | 1688 |
|
| 1615 | 1689 |
SectionWriter(SectionWriter& other) |
| 1616 | 1690 |
: _os(other._os), local_os(other.local_os) {
|
| 1617 | 1691 |
|
| 1618 | 1692 |
other._os = 0; |
| 1619 | 1693 |
other.local_os = false; |
| 1620 | 1694 |
|
| 1621 | 1695 |
_sections.swap(other._sections); |
| 1622 | 1696 |
} |
| 1623 | 1697 |
|
| 1624 | 1698 |
SectionWriter& operator=(const SectionWriter&); |
| 1625 | 1699 |
|
| 1626 | 1700 |
public: |
| 1627 | 1701 |
|
| 1628 |
/// \name Section |
|
| 1702 |
/// \name Section Writers |
|
| 1629 | 1703 |
/// @{
|
| 1630 | 1704 |
|
| 1631 | 1705 |
/// \brief Add a section writer with line oriented writing |
| 1632 | 1706 |
/// |
| 1633 | 1707 |
/// The first parameter is the type descriptor of the section, the |
| 1634 | 1708 |
/// second is a generator with std::string values. At the writing |
| 1635 | 1709 |
/// process, the returned \c std::string will be written into the |
| 1636 | 1710 |
/// output file until it is an empty string. |
| 1637 | 1711 |
/// |
| 1638 | 1712 |
/// For example, an integer vector is written into a section. |
| 1639 | 1713 |
///\code |
| 1640 | 1714 |
/// @numbers |
| 1641 | 1715 |
/// 12 45 23 78 |
| 1642 | 1716 |
/// 4 28 38 28 |
| 1643 | 1717 |
/// 23 6 16 |
| 1644 | 1718 |
///\endcode |
| 1645 | 1719 |
/// |
| 1646 | 1720 |
/// The generator is implemented as a struct. |
| 1647 | 1721 |
///\code |
| 1648 | 1722 |
/// struct NumberSection {
|
| 1649 | 1723 |
/// std::vector<int>::const_iterator _it, _end; |
| 1650 | 1724 |
/// NumberSection(const std::vector<int>& data) |
| 1651 | 1725 |
/// : _it(data.begin()), _end(data.end()) {}
|
| 1652 | 1726 |
/// std::string operator()() {
|
| 1653 | 1727 |
/// int rem_in_line = 4; |
| 1654 | 1728 |
/// std::ostringstream ls; |
| 1655 | 1729 |
/// while (rem_in_line > 0 && _it != _end) {
|
| 1656 | 1730 |
/// ls << *(_it++) << ' '; |
| 1657 | 1731 |
/// --rem_in_line; |
| 1658 | 1732 |
/// } |
| 1659 | 1733 |
/// return ls.str(); |
| 1660 | 1734 |
/// } |
| 1661 | 1735 |
/// }; |
| 1662 | 1736 |
/// |
| 1663 | 1737 |
/// // ... |
| 1664 | 1738 |
/// |
| 1665 | 1739 |
/// writer.sectionLines("numbers", NumberSection(vec));
|
| 1666 | 1740 |
///\endcode |
| 1667 | 1741 |
template <typename Functor> |
| 1668 | 1742 |
SectionWriter& sectionLines(const std::string& type, Functor functor) {
|
| 1669 | 1743 |
LEMON_ASSERT(!type.empty(), "Type is empty."); |
| 1670 | 1744 |
_sections.push_back(std::make_pair(type, |
| 1671 | 1745 |
new _writer_bits::LineSection<Functor>(functor))); |
| 1672 | 1746 |
return *this; |
| 1673 | 1747 |
} |
| 1674 | 1748 |
|
| 1675 | 1749 |
|
| 1676 | 1750 |
/// \brief Add a section writer with stream oriented writing |
| 1677 | 1751 |
/// |
| 1678 | 1752 |
/// The first parameter is the type of the section, the second is |
| 1679 | 1753 |
/// a functor, which takes a \c std::ostream& parameter. The |
| 1680 | 1754 |
/// functor writes the section to the output stream. |
| 1681 | 1755 |
/// \warning The last line must be closed with end-line character. |
| 1682 | 1756 |
template <typename Functor> |
| 1683 | 1757 |
SectionWriter& sectionStream(const std::string& type, Functor functor) {
|
| 1684 | 1758 |
LEMON_ASSERT(!type.empty(), "Type is empty."); |
| 1685 | 1759 |
_sections.push_back(std::make_pair(type, |
| 1686 | 1760 |
new _writer_bits::StreamSection<Functor>(functor))); |
| 1687 | 1761 |
return *this; |
| 1688 | 1762 |
} |
| 1689 | 1763 |
|
| 1690 | 1764 |
/// @} |
| 1691 | 1765 |
|
| 1692 | 1766 |
public: |
| 1693 | 1767 |
|
| 1694 | 1768 |
|
| 1695 |
/// \name Execution of the |
|
| 1769 |
/// \name Execution of the Writer |
|
| 1696 | 1770 |
/// @{
|
| 1697 | 1771 |
|
| 1698 | 1772 |
/// \brief Start the batch processing |
| 1699 | 1773 |
/// |
| 1700 | 1774 |
/// This function starts the batch processing. |
| 1701 | 1775 |
void run() {
|
| 1702 | 1776 |
|
| 1703 | 1777 |
LEMON_ASSERT(_os != 0, "This writer is assigned to an other writer"); |
| 1704 | 1778 |
|
| 1705 | 1779 |
for (Sections::iterator it = _sections.begin(); |
| 1706 | 1780 |
it != _sections.end(); ++it) {
|
| 1707 | 1781 |
(*_os) << '@' << it->first << std::endl; |
| 1708 | 1782 |
it->second->process(*_os); |
| 1709 | 1783 |
} |
| 1710 | 1784 |
} |
| 1711 | 1785 |
|
| 1712 | 1786 |
/// \brief Give back the stream of the writer |
| 1713 | 1787 |
/// |
| 1714 | 1788 |
/// Returns the stream of the writer |
| 1715 | 1789 |
std::ostream& ostream() {
|
| 1716 | 1790 |
return *_os; |
| 1717 | 1791 |
} |
| 1718 | 1792 |
|
| 1719 | 1793 |
/// @} |
| 1720 | 1794 |
|
| 1721 | 1795 |
}; |
| 1722 | 1796 |
|
| 1797 |
/// \ingroup lemon_io |
|
| 1798 |
/// |
|
| 1723 | 1799 |
/// \brief Return a \ref SectionWriter class |
| 1724 | 1800 |
/// |
| 1725 | 1801 |
/// This function just returns a \ref SectionWriter class. |
| 1802 |
/// |
|
| 1803 |
/// Please see SectionWriter documentation about the custom section |
|
| 1804 |
/// output. |
|
| 1805 |
/// |
|
| 1726 | 1806 |
/// \relates SectionWriter |
| 1807 |
/// \sa sectionWriter(const std::string& fn) |
|
| 1808 |
/// \sa sectionWriter(const char *fn) |
|
| 1727 | 1809 |
inline SectionWriter sectionWriter(std::ostream& os) {
|
| 1728 | 1810 |
SectionWriter tmp(os); |
| 1729 | 1811 |
return tmp; |
| 1730 | 1812 |
} |
| 1731 | 1813 |
|
| 1732 | 1814 |
/// \brief Return a \ref SectionWriter class |
| 1733 | 1815 |
/// |
| 1734 | 1816 |
/// This function just returns a \ref SectionWriter class. |
| 1735 | 1817 |
/// \relates SectionWriter |
| 1818 |
/// \sa sectionWriter(std::ostream& os) |
|
| 1736 | 1819 |
inline SectionWriter sectionWriter(const std::string& fn) {
|
| 1737 | 1820 |
SectionWriter tmp(fn); |
| 1738 | 1821 |
return tmp; |
| 1739 | 1822 |
} |
| 1740 | 1823 |
|
| 1741 | 1824 |
/// \brief Return a \ref SectionWriter class |
| 1742 | 1825 |
/// |
| 1743 | 1826 |
/// This function just returns a \ref SectionWriter class. |
| 1744 | 1827 |
/// \relates SectionWriter |
| 1828 |
/// \sa sectionWriter(std::ostream& os) |
|
| 1745 | 1829 |
inline SectionWriter sectionWriter(const char* fn) {
|
| 1746 | 1830 |
SectionWriter tmp(fn); |
| 1747 | 1831 |
return tmp; |
| 1748 | 1832 |
} |
| 1749 | 1833 |
} |
| 1750 | 1834 |
|
| 1751 | 1835 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_LIST_GRAPH_H |
| 20 | 20 |
#define LEMON_LIST_GRAPH_H |
| 21 | 21 |
|
| 22 | 22 |
///\ingroup graphs |
| 23 | 23 |
///\file |
| 24 |
///\brief ListDigraph |
|
| 24 |
///\brief ListDigraph and ListGraph classes. |
|
| 25 | 25 |
|
| 26 | 26 |
#include <lemon/core.h> |
| 27 | 27 |
#include <lemon/error.h> |
| 28 | 28 |
#include <lemon/bits/graph_extender.h> |
| 29 | 29 |
|
| 30 | 30 |
#include <vector> |
| 31 | 31 |
#include <list> |
| 32 | 32 |
|
| 33 | 33 |
namespace lemon {
|
| 34 | 34 |
|
| 35 |
class ListDigraph; |
|
| 36 |
|
|
| 35 | 37 |
class ListDigraphBase {
|
| 36 | 38 |
|
| 37 | 39 |
protected: |
| 38 | 40 |
struct NodeT {
|
| 39 | 41 |
int first_in, first_out; |
| 40 | 42 |
int prev, next; |
| 41 | 43 |
}; |
| 42 | 44 |
|
| 43 | 45 |
struct ArcT {
|
| 44 | 46 |
int target, source; |
| 45 | 47 |
int prev_in, prev_out; |
| 46 | 48 |
int next_in, next_out; |
| 47 | 49 |
}; |
| 48 | 50 |
|
| 49 | 51 |
std::vector<NodeT> nodes; |
| 50 | 52 |
|
| 51 | 53 |
int first_node; |
| 52 | 54 |
|
| 53 | 55 |
int first_free_node; |
| 54 | 56 |
|
| 55 | 57 |
std::vector<ArcT> arcs; |
| 56 | 58 |
|
| 57 | 59 |
int first_free_arc; |
| 58 | 60 |
|
| 59 | 61 |
public: |
| 60 | 62 |
|
| 61 | 63 |
typedef ListDigraphBase Digraph; |
| 62 | 64 |
|
| 63 | 65 |
class Node {
|
| 64 | 66 |
friend class ListDigraphBase; |
| 67 |
friend class ListDigraph; |
|
| 65 | 68 |
protected: |
| 66 | 69 |
|
| 67 | 70 |
int id; |
| 68 | 71 |
explicit Node(int pid) { id = pid;}
|
| 69 | 72 |
|
| 70 | 73 |
public: |
| 71 | 74 |
Node() {}
|
| 72 | 75 |
Node (Invalid) { id = -1; }
|
| 73 | 76 |
bool operator==(const Node& node) const {return id == node.id;}
|
| 74 | 77 |
bool operator!=(const Node& node) const {return id != node.id;}
|
| 75 | 78 |
bool operator<(const Node& node) const {return id < node.id;}
|
| 76 | 79 |
}; |
| 77 | 80 |
|
| 78 | 81 |
class Arc {
|
| 79 | 82 |
friend class ListDigraphBase; |
| 83 |
friend class ListDigraph; |
|
| 80 | 84 |
protected: |
| 81 | 85 |
|
| 82 | 86 |
int id; |
| 83 | 87 |
explicit Arc(int pid) { id = pid;}
|
| 84 | 88 |
|
| 85 | 89 |
public: |
| 86 | 90 |
Arc() {}
|
| 87 | 91 |
Arc (Invalid) { id = -1; }
|
| 88 | 92 |
bool operator==(const Arc& arc) const {return id == arc.id;}
|
| 89 | 93 |
bool operator!=(const Arc& arc) const {return id != arc.id;}
|
| 90 | 94 |
bool operator<(const Arc& arc) const {return id < arc.id;}
|
| 91 | 95 |
}; |
| 92 | 96 |
|
| 93 | 97 |
|
| 94 | 98 |
|
| 95 | 99 |
ListDigraphBase() |
| 96 | 100 |
: nodes(), first_node(-1), |
| 97 | 101 |
first_free_node(-1), arcs(), first_free_arc(-1) {}
|
| 98 | 102 |
|
| 99 | 103 |
|
| 100 | 104 |
int maxNodeId() const { return nodes.size()-1; }
|
| 101 | 105 |
int maxArcId() const { return arcs.size()-1; }
|
| 102 | 106 |
|
| 103 | 107 |
Node source(Arc e) const { return Node(arcs[e.id].source); }
|
| 104 | 108 |
Node target(Arc e) const { return Node(arcs[e.id].target); }
|
| 105 | 109 |
|
| 106 | 110 |
|
| 107 | 111 |
void first(Node& node) const {
|
| 108 | 112 |
node.id = first_node; |
| 109 | 113 |
} |
| 110 | 114 |
|
| 111 | 115 |
void next(Node& node) const {
|
| 112 | 116 |
node.id = nodes[node.id].next; |
| 113 | 117 |
} |
| 114 | 118 |
|
| 115 | 119 |
|
| 116 | 120 |
void first(Arc& arc) const {
|
| 117 | 121 |
int n; |
| 118 | 122 |
for(n = first_node; |
| 119 |
n!=-1 && nodes[n]. |
|
| 123 |
n != -1 && nodes[n].first_out == -1; |
|
| 120 | 124 |
n = nodes[n].next) {}
|
| 121 |
arc.id = (n == -1) ? -1 : nodes[n]. |
|
| 125 |
arc.id = (n == -1) ? -1 : nodes[n].first_out; |
|
| 122 | 126 |
} |
| 123 | 127 |
|
| 124 | 128 |
void next(Arc& arc) const {
|
| 125 |
if (arcs[arc.id].next_in != -1) {
|
|
| 126 |
arc.id = arcs[arc.id].next_in; |
|
| 129 |
if (arcs[arc.id].next_out != -1) {
|
|
| 130 |
arc.id = arcs[arc.id].next_out; |
|
| 127 | 131 |
} else {
|
| 128 | 132 |
int n; |
| 129 |
for(n = nodes[arcs[arc.id].target].next; |
|
| 130 |
n!=-1 && nodes[n].first_in == -1; |
|
| 133 |
for(n = nodes[arcs[arc.id].source].next; |
|
| 134 |
n != -1 && nodes[n].first_out == -1; |
|
| 131 | 135 |
n = nodes[n].next) {}
|
| 132 |
arc.id = (n == -1) ? -1 : nodes[n]. |
|
| 136 |
arc.id = (n == -1) ? -1 : nodes[n].first_out; |
|
| 133 | 137 |
} |
| 134 | 138 |
} |
| 135 | 139 |
|
| 136 | 140 |
void firstOut(Arc &e, const Node& v) const {
|
| 137 | 141 |
e.id = nodes[v.id].first_out; |
| 138 | 142 |
} |
| 139 | 143 |
void nextOut(Arc &e) const {
|
| 140 | 144 |
e.id=arcs[e.id].next_out; |
| 141 | 145 |
} |
| 142 | 146 |
|
| 143 | 147 |
void firstIn(Arc &e, const Node& v) const {
|
| 144 | 148 |
e.id = nodes[v.id].first_in; |
| 145 | 149 |
} |
| 146 | 150 |
void nextIn(Arc &e) const {
|
| 147 | 151 |
e.id=arcs[e.id].next_in; |
| 148 | 152 |
} |
| 149 | 153 |
|
| 150 | 154 |
|
| 151 | 155 |
static int id(Node v) { return v.id; }
|
| 152 | 156 |
static int id(Arc e) { return e.id; }
|
| 153 | 157 |
|
| 154 | 158 |
static Node nodeFromId(int id) { return Node(id);}
|
| 155 | 159 |
static Arc arcFromId(int id) { return Arc(id);}
|
| 156 | 160 |
|
| 157 | 161 |
bool valid(Node n) const {
|
| 158 | 162 |
return n.id >= 0 && n.id < static_cast<int>(nodes.size()) && |
| 159 | 163 |
nodes[n.id].prev != -2; |
| 160 | 164 |
} |
| 161 | 165 |
|
| 162 | 166 |
bool valid(Arc a) const {
|
| 163 | 167 |
return a.id >= 0 && a.id < static_cast<int>(arcs.size()) && |
| 164 | 168 |
arcs[a.id].prev_in != -2; |
| 165 | 169 |
} |
| 166 | 170 |
|
| 167 | 171 |
Node addNode() {
|
| 168 | 172 |
int n; |
| 169 | 173 |
|
| 170 | 174 |
if(first_free_node==-1) {
|
| 171 | 175 |
n = nodes.size(); |
| 172 | 176 |
nodes.push_back(NodeT()); |
| 173 | 177 |
} else {
|
| 174 | 178 |
n = first_free_node; |
| 175 | 179 |
first_free_node = nodes[n].next; |
| 176 | 180 |
} |
| 177 | 181 |
|
| 178 | 182 |
nodes[n].next = first_node; |
| 179 | 183 |
if(first_node != -1) nodes[first_node].prev = n; |
| 180 | 184 |
first_node = n; |
| 181 | 185 |
nodes[n].prev = -1; |
| 182 | 186 |
|
| 183 | 187 |
nodes[n].first_in = nodes[n].first_out = -1; |
| 184 | 188 |
|
| 185 | 189 |
return Node(n); |
| 186 | 190 |
} |
| 187 | 191 |
|
| 188 | 192 |
Arc addArc(Node u, Node v) {
|
| 189 | 193 |
int n; |
| 190 | 194 |
|
| 191 | 195 |
if (first_free_arc == -1) {
|
| 192 | 196 |
n = arcs.size(); |
| 193 | 197 |
arcs.push_back(ArcT()); |
| 194 | 198 |
} else {
|
| 195 | 199 |
n = first_free_arc; |
| 196 | 200 |
first_free_arc = arcs[n].next_in; |
| 197 | 201 |
} |
| 198 | 202 |
|
| 199 | 203 |
arcs[n].source = u.id; |
| 200 | 204 |
arcs[n].target = v.id; |
| 201 | 205 |
|
| 202 | 206 |
arcs[n].next_out = nodes[u.id].first_out; |
| 203 | 207 |
if(nodes[u.id].first_out != -1) {
|
| 204 | 208 |
arcs[nodes[u.id].first_out].prev_out = n; |
| 205 | 209 |
} |
| 206 | 210 |
|
| 207 | 211 |
arcs[n].next_in = nodes[v.id].first_in; |
| 208 | 212 |
if(nodes[v.id].first_in != -1) {
|
| 209 | 213 |
arcs[nodes[v.id].first_in].prev_in = n; |
| 210 | 214 |
} |
| 211 | 215 |
|
| 212 | 216 |
arcs[n].prev_in = arcs[n].prev_out = -1; |
| 213 | 217 |
|
| 214 | 218 |
nodes[u.id].first_out = nodes[v.id].first_in = n; |
| 215 | 219 |
|
| 216 | 220 |
return Arc(n); |
| 217 | 221 |
} |
| 218 | 222 |
|
| 219 | 223 |
void erase(const Node& node) {
|
| 220 | 224 |
int n = node.id; |
| 221 | 225 |
|
| 222 | 226 |
if(nodes[n].next != -1) {
|
| 223 | 227 |
nodes[nodes[n].next].prev = nodes[n].prev; |
| 224 | 228 |
} |
| 225 | 229 |
|
| 226 | 230 |
if(nodes[n].prev != -1) {
|
| 227 | 231 |
nodes[nodes[n].prev].next = nodes[n].next; |
| 228 | 232 |
} else {
|
| 229 | 233 |
first_node = nodes[n].next; |
| 230 | 234 |
} |
| 231 | 235 |
|
| 232 | 236 |
nodes[n].next = first_free_node; |
| 233 | 237 |
first_free_node = n; |
| 234 | 238 |
nodes[n].prev = -2; |
| 235 | 239 |
|
| 236 | 240 |
} |
| 237 | 241 |
|
| 238 | 242 |
void erase(const Arc& arc) {
|
| 239 | 243 |
int n = arc.id; |
| 240 | 244 |
|
| 241 | 245 |
if(arcs[n].next_in!=-1) {
|
| 242 | 246 |
arcs[arcs[n].next_in].prev_in = arcs[n].prev_in; |
| 243 | 247 |
} |
| 244 | 248 |
|
| 245 | 249 |
if(arcs[n].prev_in!=-1) {
|
| 246 | 250 |
arcs[arcs[n].prev_in].next_in = arcs[n].next_in; |
| 247 | 251 |
} else {
|
| 248 | 252 |
nodes[arcs[n].target].first_in = arcs[n].next_in; |
| 249 | 253 |
} |
| 250 | 254 |
|
| 251 | 255 |
|
| 252 | 256 |
if(arcs[n].next_out!=-1) {
|
| 253 | 257 |
arcs[arcs[n].next_out].prev_out = arcs[n].prev_out; |
| 254 | 258 |
} |
| 255 | 259 |
|
| 256 | 260 |
if(arcs[n].prev_out!=-1) {
|
| 257 | 261 |
arcs[arcs[n].prev_out].next_out = arcs[n].next_out; |
| 258 | 262 |
} else {
|
| 259 | 263 |
nodes[arcs[n].source].first_out = arcs[n].next_out; |
| 260 | 264 |
} |
| 261 | 265 |
|
| 262 | 266 |
arcs[n].next_in = first_free_arc; |
| 263 | 267 |
first_free_arc = n; |
| 264 | 268 |
arcs[n].prev_in = -2; |
| 265 | 269 |
} |
| 266 | 270 |
|
| 267 | 271 |
void clear() {
|
| 268 | 272 |
arcs.clear(); |
| 269 | 273 |
nodes.clear(); |
| 270 | 274 |
first_node = first_free_node = first_free_arc = -1; |
| 271 | 275 |
} |
| 272 | 276 |
|
| 273 | 277 |
protected: |
| 274 | 278 |
void changeTarget(Arc e, Node n) |
| 275 | 279 |
{
|
| 276 | 280 |
if(arcs[e.id].next_in != -1) |
| 277 | 281 |
arcs[arcs[e.id].next_in].prev_in = arcs[e.id].prev_in; |
| 278 | 282 |
if(arcs[e.id].prev_in != -1) |
| 279 | 283 |
arcs[arcs[e.id].prev_in].next_in = arcs[e.id].next_in; |
| 280 | 284 |
else nodes[arcs[e.id].target].first_in = arcs[e.id].next_in; |
| 281 | 285 |
if (nodes[n.id].first_in != -1) {
|
| 282 | 286 |
arcs[nodes[n.id].first_in].prev_in = e.id; |
| 283 | 287 |
} |
| 284 | 288 |
arcs[e.id].target = n.id; |
| 285 | 289 |
arcs[e.id].prev_in = -1; |
| 286 | 290 |
arcs[e.id].next_in = nodes[n.id].first_in; |
| 287 | 291 |
nodes[n.id].first_in = e.id; |
| 288 | 292 |
} |
| 289 | 293 |
void changeSource(Arc e, Node n) |
| 290 | 294 |
{
|
| 291 | 295 |
if(arcs[e.id].next_out != -1) |
| 292 | 296 |
arcs[arcs[e.id].next_out].prev_out = arcs[e.id].prev_out; |
| 293 | 297 |
if(arcs[e.id].prev_out != -1) |
| 294 | 298 |
arcs[arcs[e.id].prev_out].next_out = arcs[e.id].next_out; |
| 295 | 299 |
else nodes[arcs[e.id].source].first_out = arcs[e.id].next_out; |
| 296 | 300 |
if (nodes[n.id].first_out != -1) {
|
| 297 | 301 |
arcs[nodes[n.id].first_out].prev_out = e.id; |
| 298 | 302 |
} |
| 299 | 303 |
arcs[e.id].source = n.id; |
| 300 | 304 |
arcs[e.id].prev_out = -1; |
| 301 | 305 |
arcs[e.id].next_out = nodes[n.id].first_out; |
| 302 | 306 |
nodes[n.id].first_out = e.id; |
| 303 | 307 |
} |
| 304 | 308 |
|
| 305 | 309 |
}; |
| 306 | 310 |
|
| 307 | 311 |
typedef DigraphExtender<ListDigraphBase> ExtendedListDigraphBase; |
| 308 | 312 |
|
| 309 | 313 |
/// \addtogroup graphs |
| 310 | 314 |
/// @{
|
| 311 | 315 |
|
| 312 | 316 |
///A general directed graph structure. |
| 313 | 317 |
|
| 314 |
///\ref ListDigraph is a simple and fast <em>directed graph</em> |
|
| 315 |
///implementation based on static linked lists that are stored in |
|
| 318 |
///\ref ListDigraph is a versatile and fast directed graph |
|
| 319 |
///implementation based on linked lists that are stored in |
|
| 316 | 320 |
///\c std::vector structures. |
| 317 | 321 |
/// |
| 318 |
///It conforms to the \ref concepts::Digraph "Digraph concept" and it |
|
| 319 |
///also provides several useful additional functionalities. |
|
| 320 |
/// |
|
| 322 |
///This type fully conforms to the \ref concepts::Digraph "Digraph concept" |
|
| 323 |
///and it also provides several useful additional functionalities. |
|
| 324 |
///Most of its member functions and nested classes are documented |
|
| 321 | 325 |
///only in the concept class. |
| 322 | 326 |
/// |
| 323 |
///An important extra feature of this digraph implementation is that |
|
| 324 |
///its maps are real \ref concepts::ReferenceMap "reference map"s. |
|
| 325 |
/// |
|
| 326 | 327 |
///\sa concepts::Digraph |
| 328 |
///\sa ListGraph |
|
| 329 |
class ListDigraph : public ExtendedListDigraphBase {
|
|
| 330 |
typedef ExtendedListDigraphBase Parent; |
|
| 327 | 331 |
|
| 328 |
class ListDigraph : public ExtendedListDigraphBase {
|
|
| 329 | 332 |
private: |
| 330 |
///ListDigraph is \e not copy constructible. Use copyDigraph() instead. |
|
| 331 |
|
|
| 332 |
///ListDigraph is \e not copy constructible. Use copyDigraph() instead. |
|
| 333 |
/// |
|
| 333 |
/// Digraphs are \e not copy constructible. Use DigraphCopy instead. |
|
| 334 | 334 |
ListDigraph(const ListDigraph &) :ExtendedListDigraphBase() {};
|
| 335 |
///\brief Assignment of ListDigraph to another one is \e not allowed. |
|
| 336 |
///Use copyDigraph() instead. |
|
| 337 |
|
|
| 338 |
///Assignment of ListDigraph to another one is \e not allowed. |
|
| 339 |
/// |
|
| 335 |
/// \brief Assignment of a digraph to another one is \e not allowed. |
|
| 336 |
/// Use DigraphCopy instead. |
|
| 340 | 337 |
void operator=(const ListDigraph &) {}
|
| 341 | 338 |
public: |
| 342 | 339 |
|
| 343 |
typedef ExtendedListDigraphBase Parent; |
|
| 344 |
|
|
| 345 | 340 |
/// Constructor |
| 346 | 341 |
|
| 347 | 342 |
/// Constructor. |
| 348 | 343 |
/// |
| 349 | 344 |
ListDigraph() {}
|
| 350 | 345 |
|
| 351 | 346 |
///Add a new node to the digraph. |
| 352 | 347 |
|
| 353 |
///Add a new node to the digraph. |
|
| 354 |
///\return the new node. |
|
| 348 |
///This function adds a new node to the digraph. |
|
| 349 |
///\return The new node. |
|
| 355 | 350 |
Node addNode() { return Parent::addNode(); }
|
| 356 | 351 |
|
| 357 | 352 |
///Add a new arc to the digraph. |
| 358 | 353 |
|
| 359 |
/// |
|
| 354 |
///This function adds a new arc to the digraph with source node \c s |
|
| 360 | 355 |
///and target node \c t. |
| 361 |
///\return the new arc. |
|
| 362 |
Arc addArc(const Node& s, const Node& t) {
|
|
| 356 |
///\return The new arc. |
|
| 357 |
Arc addArc(Node s, Node t) {
|
|
| 363 | 358 |
return Parent::addArc(s, t); |
| 364 | 359 |
} |
| 365 | 360 |
|
| 366 | 361 |
///\brief Erase a node from the digraph. |
| 367 | 362 |
/// |
| 368 |
///Erase a node from the digraph. |
|
| 369 |
/// |
|
| 370 |
|
|
| 363 |
///This function erases the given node from the digraph. |
|
| 364 |
void erase(Node n) { Parent::erase(n); }
|
|
| 371 | 365 |
|
| 372 | 366 |
///\brief Erase an arc from the digraph. |
| 373 | 367 |
/// |
| 374 |
///Erase an arc from the digraph. |
|
| 375 |
/// |
|
| 376 |
|
|
| 368 |
///This function erases the given arc from the digraph. |
|
| 369 |
void erase(Arc a) { Parent::erase(a); }
|
|
| 377 | 370 |
|
| 378 | 371 |
/// Node validity check |
| 379 | 372 |
|
| 380 |
/// This function gives back true if the given node is valid, |
|
| 381 |
/// ie. it is a real node of the graph. |
|
| 373 |
/// This function gives back \c true if the given node is valid, |
|
| 374 |
/// i.e. it is a real node of the digraph. |
|
| 382 | 375 |
/// |
| 383 |
/// \warning A Node pointing to a removed item |
|
| 384 |
/// could become valid again later if new nodes are |
|
| 385 |
/// |
|
| 376 |
/// \warning A removed node could become valid again if new nodes are |
|
| 377 |
/// added to the digraph. |
|
| 386 | 378 |
bool valid(Node n) const { return Parent::valid(n); }
|
| 387 | 379 |
|
| 388 | 380 |
/// Arc validity check |
| 389 | 381 |
|
| 390 |
/// This function gives back true if the given arc is valid, |
|
| 391 |
/// ie. it is a real arc of the graph. |
|
| 382 |
/// This function gives back \c true if the given arc is valid, |
|
| 383 |
/// i.e. it is a real arc of the digraph. |
|
| 392 | 384 |
/// |
| 393 |
/// \warning An Arc pointing to a removed item |
|
| 394 |
/// could become valid again later if new nodes are |
|
| 395 |
/// |
|
| 385 |
/// \warning A removed arc could become valid again if new arcs are |
|
| 386 |
/// added to the digraph. |
|
| 396 | 387 |
bool valid(Arc a) const { return Parent::valid(a); }
|
| 397 | 388 |
|
| 398 |
/// Change the target of |
|
| 389 |
/// Change the target node of an arc |
|
| 399 | 390 |
|
| 400 |
/// |
|
| 391 |
/// This function changes the target node of the given arc \c a to \c n. |
|
| 401 | 392 |
/// |
| 402 |
///\note The <tt>ArcIt</tt>s and <tt>OutArcIt</tt>s referencing |
|
| 403 |
///the changed arc remain valid. However <tt>InArcIt</tt>s are |
|
| 404 |
/// |
|
| 393 |
///\note \c ArcIt and \c OutArcIt iterators referencing the changed |
|
| 394 |
///arc remain valid, however \c InArcIt iterators are invalidated. |
|
| 405 | 395 |
/// |
| 406 | 396 |
///\warning This functionality cannot be used together with the Snapshot |
| 407 | 397 |
///feature. |
| 408 | 398 |
void changeTarget(Arc a, Node n) {
|
| 409 | 399 |
Parent::changeTarget(a,n); |
| 410 | 400 |
} |
| 411 |
/// Change the source of |
|
| 401 |
/// Change the source node of an arc |
|
| 412 | 402 |
|
| 413 |
/// |
|
| 403 |
/// This function changes the source node of the given arc \c a to \c n. |
|
| 414 | 404 |
/// |
| 415 |
///\note The <tt>InArcIt</tt>s referencing the changed arc remain |
|
| 416 |
///valid. However the <tt>ArcIt</tt>s and <tt>OutArcIt</tt>s are |
|
| 417 |
/// |
|
| 405 |
///\note \c InArcIt iterators referencing the changed arc remain |
|
| 406 |
///valid, however \c ArcIt and \c OutArcIt iterators are invalidated. |
|
| 418 | 407 |
/// |
| 419 | 408 |
///\warning This functionality cannot be used together with the Snapshot |
| 420 | 409 |
///feature. |
| 421 | 410 |
void changeSource(Arc a, Node n) {
|
| 422 | 411 |
Parent::changeSource(a,n); |
| 423 | 412 |
} |
| 424 | 413 |
|
| 425 |
/// |
|
| 414 |
/// Reverse the direction of an arc. |
|
| 426 | 415 |
|
| 427 |
///\note The <tt>ArcIt</tt>s referencing the changed arc remain |
|
| 428 |
///valid. However <tt>OutArcIt</tt>s and <tt>InArcIt</tt>s are |
|
| 429 |
/// |
|
| 416 |
/// This function reverses the direction of the given arc. |
|
| 417 |
///\note \c ArcIt, \c OutArcIt and \c InArcIt iterators referencing |
|
| 418 |
///the changed arc are invalidated. |
|
| 430 | 419 |
/// |
| 431 | 420 |
///\warning This functionality cannot be used together with the Snapshot |
| 432 | 421 |
///feature. |
| 433 |
void reverseArc(Arc e) {
|
|
| 434 |
Node t=target(e); |
|
| 435 |
changeTarget(e,source(e)); |
|
| 436 |
changeSource(e,t); |
|
| 422 |
void reverseArc(Arc a) {
|
|
| 423 |
Node t=target(a); |
|
| 424 |
changeTarget(a,source(a)); |
|
| 425 |
changeSource(a,t); |
|
| 437 | 426 |
} |
| 438 | 427 |
|
| 439 |
/// Reserve memory for nodes. |
|
| 440 |
|
|
| 441 |
/// Using this function it is possible to avoid the superfluous memory |
|
| 442 |
/// allocation: if you know that the digraph you want to build will |
|
| 443 |
/// be very large (e.g. it will contain millions of nodes and/or arcs) |
|
| 444 |
/// then it is worth reserving space for this amount before starting |
|
| 445 |
/// to build the digraph. |
|
| 446 |
/// \sa reserveArc |
|
| 447 |
void reserveNode(int n) { nodes.reserve(n); };
|
|
| 448 |
|
|
| 449 |
/// Reserve memory for arcs. |
|
| 450 |
|
|
| 451 |
/// Using this function it is possible to avoid the superfluous memory |
|
| 452 |
/// allocation: if you know that the digraph you want to build will |
|
| 453 |
/// be very large (e.g. it will contain millions of nodes and/or arcs) |
|
| 454 |
/// then it is worth reserving space for this amount before starting |
|
| 455 |
/// to build the digraph. |
|
| 456 |
/// \sa reserveNode |
|
| 457 |
void reserveArc(int m) { arcs.reserve(m); };
|
|
| 458 |
|
|
| 459 | 428 |
///Contract two nodes. |
| 460 | 429 |
|
| 461 |
///This function contracts two nodes. |
|
| 462 |
///Node \p b will be removed but instead of deleting |
|
| 463 |
///incident arcs, they will be joined to \p a. |
|
| 464 |
///The last parameter \p r controls whether to remove loops. \c true |
|
| 465 |
/// |
|
| 430 |
///This function contracts the given two nodes. |
|
| 431 |
///Node \c v is removed, but instead of deleting its |
|
| 432 |
///incident arcs, they are joined to node \c u. |
|
| 433 |
///If the last parameter \c r is \c true (this is the default value), |
|
| 434 |
///then the newly created loops are removed. |
|
| 466 | 435 |
/// |
| 467 |
///\note The <tt>ArcIt</tt>s referencing a moved arc remain |
|
| 468 |
///valid. However <tt>InArcIt</tt>s and <tt>OutArcIt</tt>s |
|
| 469 |
/// |
|
| 436 |
///\note The moved arcs are joined to node \c u using changeSource() |
|
| 437 |
///or changeTarget(), thus \c ArcIt and \c OutArcIt iterators are |
|
| 438 |
///invalidated for the outgoing arcs of node \c v and \c InArcIt |
|
| 439 |
///iterators are invalidated for the incomming arcs of \c v. |
|
| 440 |
///Moreover all iterators referencing node \c v or the removed |
|
| 441 |
///loops are also invalidated. Other iterators remain valid. |
|
| 470 | 442 |
/// |
| 471 | 443 |
///\warning This functionality cannot be used together with the Snapshot |
| 472 | 444 |
///feature. |
| 473 |
void contract(Node |
|
| 445 |
void contract(Node u, Node v, bool r = true) |
|
| 474 | 446 |
{
|
| 475 |
for(OutArcIt e(*this, |
|
| 447 |
for(OutArcIt e(*this,v);e!=INVALID;) {
|
|
| 476 | 448 |
OutArcIt f=e; |
| 477 | 449 |
++f; |
| 478 |
if(r && target(e)==a) erase(e); |
|
| 479 |
else changeSource(e,a); |
|
| 450 |
if(r && target(e)==u) erase(e); |
|
| 451 |
else changeSource(e,u); |
|
| 480 | 452 |
e=f; |
| 481 | 453 |
} |
| 482 |
for(InArcIt e(*this, |
|
| 454 |
for(InArcIt e(*this,v);e!=INVALID;) {
|
|
| 483 | 455 |
InArcIt f=e; |
| 484 | 456 |
++f; |
| 485 |
if(r && source(e)==a) erase(e); |
|
| 486 |
else changeTarget(e,a); |
|
| 457 |
if(r && source(e)==u) erase(e); |
|
| 458 |
else changeTarget(e,u); |
|
| 487 | 459 |
e=f; |
| 488 | 460 |
} |
| 489 |
erase( |
|
| 461 |
erase(v); |
|
| 490 | 462 |
} |
| 491 | 463 |
|
| 492 | 464 |
///Split a node. |
| 493 | 465 |
|
| 494 |
///This function splits a node. First a new node is added to the digraph, |
|
| 495 |
///then the source of each outgoing arc of \c n is moved to this new node. |
|
| 496 |
///If \c connect is \c true (this is the default value), then a new arc |
|
| 497 |
///from \c n to the newly created node is also added. |
|
| 466 |
///This function splits the given node. First, a new node is added |
|
| 467 |
///to the digraph, then the source of each outgoing arc of node \c n |
|
| 468 |
///is moved to this new node. |
|
| 469 |
///If the second parameter \c connect is \c true (this is the default |
|
| 470 |
///value), then a new arc from node \c n to the newly created node |
|
| 471 |
///is also added. |
|
| 498 | 472 |
///\return The newly created node. |
| 499 | 473 |
/// |
| 500 |
///\note The <tt>ArcIt</tt>s referencing a moved arc remain |
|
| 501 |
///valid. However <tt>InArcIt</tt>s and <tt>OutArcIt</tt>s may |
|
| 502 |
/// |
|
| 474 |
///\note All iterators remain valid. |
|
| 503 | 475 |
/// |
| 504 |
///\warning This functionality cannot be used |
|
| 476 |
///\warning This functionality cannot be used together with the |
|
| 505 | 477 |
///Snapshot feature. |
| 506 | 478 |
Node split(Node n, bool connect = true) {
|
| 507 | 479 |
Node b = addNode(); |
| 508 |
for(OutArcIt e(*this,n);e!=INVALID;) {
|
|
| 509 |
OutArcIt f=e; |
|
| 510 |
++f; |
|
| 511 |
changeSource(e,b); |
|
| 512 |
|
|
| 480 |
nodes[b.id].first_out=nodes[n.id].first_out; |
|
| 481 |
nodes[n.id].first_out=-1; |
|
| 482 |
for(int i=nodes[b.id].first_out; i!=-1; i=arcs[i].next_out) {
|
|
| 483 |
arcs[i].source=b.id; |
|
| 513 | 484 |
} |
| 514 | 485 |
if (connect) addArc(n,b); |
| 515 | 486 |
return b; |
| 516 | 487 |
} |
| 517 | 488 |
|
| 518 | 489 |
///Split an arc. |
| 519 | 490 |
|
| 520 |
///This function splits an arc. First a new node \c b is added to |
|
| 521 |
///the digraph, then the original arc is re-targeted to \c |
|
| 522 |
/// |
|
| 491 |
///This function splits the given arc. First, a new node \c v is |
|
| 492 |
///added to the digraph, then the target node of the original arc |
|
| 493 |
///is set to \c v. Finally, an arc from \c v to the original target |
|
| 494 |
///is added. |
|
| 495 |
///\return The newly created node. |
|
| 523 | 496 |
/// |
| 524 |
///\ |
|
| 497 |
///\note \c InArcIt iterators referencing the original arc are |
|
| 498 |
///invalidated. Other iterators remain valid. |
|
| 525 | 499 |
/// |
| 526 | 500 |
///\warning This functionality cannot be used together with the |
| 527 | 501 |
///Snapshot feature. |
| 528 |
Node split(Arc e) {
|
|
| 529 |
Node b = addNode(); |
|
| 530 |
addArc(b,target(e)); |
|
| 531 |
changeTarget(e,b); |
|
| 532 |
|
|
| 502 |
Node split(Arc a) {
|
|
| 503 |
Node v = addNode(); |
|
| 504 |
addArc(v,target(a)); |
|
| 505 |
changeTarget(a,v); |
|
| 506 |
return v; |
|
| 533 | 507 |
} |
| 534 | 508 |
|
| 509 |
///Clear the digraph. |
|
| 510 |
|
|
| 511 |
///This function erases all nodes and arcs from the digraph. |
|
| 512 |
/// |
|
| 513 |
void clear() {
|
|
| 514 |
Parent::clear(); |
|
| 515 |
} |
|
| 516 |
|
|
| 517 |
/// Reserve memory for nodes. |
|
| 518 |
|
|
| 519 |
/// Using this function, it is possible to avoid superfluous memory |
|
| 520 |
/// allocation: if you know that the digraph you want to build will |
|
| 521 |
/// be large (e.g. it will contain millions of nodes and/or arcs), |
|
| 522 |
/// then it is worth reserving space for this amount before starting |
|
| 523 |
/// to build the digraph. |
|
| 524 |
/// \sa reserveArc() |
|
| 525 |
void reserveNode(int n) { nodes.reserve(n); };
|
|
| 526 |
|
|
| 527 |
/// Reserve memory for arcs. |
|
| 528 |
|
|
| 529 |
/// Using this function, it is possible to avoid superfluous memory |
|
| 530 |
/// allocation: if you know that the digraph you want to build will |
|
| 531 |
/// be large (e.g. it will contain millions of nodes and/or arcs), |
|
| 532 |
/// then it is worth reserving space for this amount before starting |
|
| 533 |
/// to build the digraph. |
|
| 534 |
/// \sa reserveNode() |
|
| 535 |
void reserveArc(int m) { arcs.reserve(m); };
|
|
| 536 |
|
|
| 535 | 537 |
/// \brief Class to make a snapshot of the digraph and restore |
| 536 | 538 |
/// it later. |
| 537 | 539 |
/// |
| 538 | 540 |
/// Class to make a snapshot of the digraph and restore it later. |
| 539 | 541 |
/// |
| 540 | 542 |
/// The newly added nodes and arcs can be removed using the |
| 541 | 543 |
/// restore() function. |
| 542 | 544 |
/// |
| 543 |
/// \warning Arc and node deletions and other modifications (e.g. |
|
| 544 |
/// contracting, splitting, reversing arcs or nodes) cannot be |
|
| 545 |
/// \note After a state is restored, you cannot restore a later state, |
|
| 546 |
/// i.e. you cannot add the removed nodes and arcs again using |
|
| 547 |
/// another Snapshot instance. |
|
| 548 |
/// |
|
| 549 |
/// \warning Node and arc deletions and other modifications (e.g. |
|
| 550 |
/// reversing, contracting, splitting arcs or nodes) cannot be |
|
| 545 | 551 |
/// restored. These events invalidate the snapshot. |
| 552 |
/// However the arcs and nodes that were added to the digraph after |
|
| 553 |
/// making the current snapshot can be removed without invalidating it. |
|
| 546 | 554 |
class Snapshot {
|
| 547 | 555 |
protected: |
| 548 | 556 |
|
| 549 | 557 |
typedef Parent::NodeNotifier NodeNotifier; |
| 550 | 558 |
|
| 551 | 559 |
class NodeObserverProxy : public NodeNotifier::ObserverBase {
|
| 552 | 560 |
public: |
| 553 | 561 |
|
| 554 | 562 |
NodeObserverProxy(Snapshot& _snapshot) |
| 555 | 563 |
: snapshot(_snapshot) {}
|
| 556 | 564 |
|
| 557 | 565 |
using NodeNotifier::ObserverBase::attach; |
| 558 | 566 |
using NodeNotifier::ObserverBase::detach; |
| 559 | 567 |
using NodeNotifier::ObserverBase::attached; |
| 560 | 568 |
|
| 561 | 569 |
protected: |
| 562 | 570 |
|
| 563 | 571 |
virtual void add(const Node& node) {
|
| 564 | 572 |
snapshot.addNode(node); |
| 565 | 573 |
} |
| 566 | 574 |
virtual void add(const std::vector<Node>& nodes) {
|
| 567 | 575 |
for (int i = nodes.size() - 1; i >= 0; ++i) {
|
| 568 | 576 |
snapshot.addNode(nodes[i]); |
| 569 | 577 |
} |
| 570 | 578 |
} |
| 571 | 579 |
virtual void erase(const Node& node) {
|
| 572 | 580 |
snapshot.eraseNode(node); |
| 573 | 581 |
} |
| 574 | 582 |
virtual void erase(const std::vector<Node>& nodes) {
|
| 575 | 583 |
for (int i = 0; i < int(nodes.size()); ++i) {
|
| 576 | 584 |
snapshot.eraseNode(nodes[i]); |
| 577 | 585 |
} |
| 578 | 586 |
} |
| 579 | 587 |
virtual void build() {
|
| 580 | 588 |
Node node; |
| 581 | 589 |
std::vector<Node> nodes; |
| 582 | 590 |
for (notifier()->first(node); node != INVALID; |
| 583 | 591 |
notifier()->next(node)) {
|
| 584 | 592 |
nodes.push_back(node); |
| 585 | 593 |
} |
| 586 | 594 |
for (int i = nodes.size() - 1; i >= 0; --i) {
|
| 587 | 595 |
snapshot.addNode(nodes[i]); |
| 588 | 596 |
} |
| 589 | 597 |
} |
| 590 | 598 |
virtual void clear() {
|
| 591 | 599 |
Node node; |
| 592 | 600 |
for (notifier()->first(node); node != INVALID; |
| 593 | 601 |
notifier()->next(node)) {
|
| 594 | 602 |
snapshot.eraseNode(node); |
| 595 | 603 |
} |
| 596 | 604 |
} |
| 597 | 605 |
|
| 598 | 606 |
Snapshot& snapshot; |
| 599 | 607 |
}; |
| 600 | 608 |
|
| 601 | 609 |
class ArcObserverProxy : public ArcNotifier::ObserverBase {
|
| 602 | 610 |
public: |
| 603 | 611 |
|
| 604 | 612 |
ArcObserverProxy(Snapshot& _snapshot) |
| 605 | 613 |
: snapshot(_snapshot) {}
|
| 606 | 614 |
|
| 607 | 615 |
using ArcNotifier::ObserverBase::attach; |
| 608 | 616 |
using ArcNotifier::ObserverBase::detach; |
| 609 | 617 |
using ArcNotifier::ObserverBase::attached; |
| 610 | 618 |
|
| 611 | 619 |
protected: |
| 612 | 620 |
|
| 613 | 621 |
virtual void add(const Arc& arc) {
|
| 614 | 622 |
snapshot.addArc(arc); |
| 615 | 623 |
} |
| 616 | 624 |
virtual void add(const std::vector<Arc>& arcs) {
|
| 617 | 625 |
for (int i = arcs.size() - 1; i >= 0; ++i) {
|
| 618 | 626 |
snapshot.addArc(arcs[i]); |
| 619 | 627 |
} |
| 620 | 628 |
} |
| 621 | 629 |
virtual void erase(const Arc& arc) {
|
| 622 | 630 |
snapshot.eraseArc(arc); |
| 623 | 631 |
} |
| 624 | 632 |
virtual void erase(const std::vector<Arc>& arcs) {
|
| 625 | 633 |
for (int i = 0; i < int(arcs.size()); ++i) {
|
| 626 | 634 |
snapshot.eraseArc(arcs[i]); |
| 627 | 635 |
} |
| 628 | 636 |
} |
| 629 | 637 |
virtual void build() {
|
| 630 | 638 |
Arc arc; |
| 631 | 639 |
std::vector<Arc> arcs; |
| 632 | 640 |
for (notifier()->first(arc); arc != INVALID; |
| 633 | 641 |
notifier()->next(arc)) {
|
| 634 | 642 |
arcs.push_back(arc); |
| 635 | 643 |
} |
| 636 | 644 |
for (int i = arcs.size() - 1; i >= 0; --i) {
|
| 637 | 645 |
snapshot.addArc(arcs[i]); |
| 638 | 646 |
} |
| 639 | 647 |
} |
| 640 | 648 |
virtual void clear() {
|
| 641 | 649 |
Arc arc; |
| 642 | 650 |
for (notifier()->first(arc); arc != INVALID; |
| 643 | 651 |
notifier()->next(arc)) {
|
| 644 | 652 |
snapshot.eraseArc(arc); |
| 645 | 653 |
} |
| 646 | 654 |
} |
| 647 | 655 |
|
| 648 | 656 |
Snapshot& snapshot; |
| 649 | 657 |
}; |
| 650 | 658 |
|
| 651 | 659 |
ListDigraph *digraph; |
| 652 | 660 |
|
| 653 | 661 |
NodeObserverProxy node_observer_proxy; |
| 654 | 662 |
ArcObserverProxy arc_observer_proxy; |
| 655 | 663 |
|
| 656 | 664 |
std::list<Node> added_nodes; |
| 657 | 665 |
std::list<Arc> added_arcs; |
| 658 | 666 |
|
| 659 | 667 |
|
| 660 | 668 |
void addNode(const Node& node) {
|
| 661 | 669 |
added_nodes.push_front(node); |
| 662 | 670 |
} |
| 663 | 671 |
void eraseNode(const Node& node) {
|
| 664 | 672 |
std::list<Node>::iterator it = |
| 665 | 673 |
std::find(added_nodes.begin(), added_nodes.end(), node); |
| 666 | 674 |
if (it == added_nodes.end()) {
|
| 667 | 675 |
clear(); |
| 668 | 676 |
arc_observer_proxy.detach(); |
| 669 | 677 |
throw NodeNotifier::ImmediateDetach(); |
| 670 | 678 |
} else {
|
| 671 | 679 |
added_nodes.erase(it); |
| 672 | 680 |
} |
| 673 | 681 |
} |
| 674 | 682 |
|
| 675 | 683 |
void addArc(const Arc& arc) {
|
| 676 | 684 |
added_arcs.push_front(arc); |
| 677 | 685 |
} |
| 678 | 686 |
void eraseArc(const Arc& arc) {
|
| 679 | 687 |
std::list<Arc>::iterator it = |
| 680 | 688 |
std::find(added_arcs.begin(), added_arcs.end(), arc); |
| 681 | 689 |
if (it == added_arcs.end()) {
|
| 682 | 690 |
clear(); |
| 683 | 691 |
node_observer_proxy.detach(); |
| 684 | 692 |
throw ArcNotifier::ImmediateDetach(); |
| 685 | 693 |
} else {
|
| 686 | 694 |
added_arcs.erase(it); |
| 687 | 695 |
} |
| 688 | 696 |
} |
| 689 | 697 |
|
| 690 | 698 |
void attach(ListDigraph &_digraph) {
|
| 691 | 699 |
digraph = &_digraph; |
| 692 | 700 |
node_observer_proxy.attach(digraph->notifier(Node())); |
| 693 | 701 |
arc_observer_proxy.attach(digraph->notifier(Arc())); |
| 694 | 702 |
} |
| 695 | 703 |
|
| 696 | 704 |
void detach() {
|
| 697 | 705 |
node_observer_proxy.detach(); |
| 698 | 706 |
arc_observer_proxy.detach(); |
| 699 | 707 |
} |
| 700 | 708 |
|
| 701 | 709 |
bool attached() const {
|
| 702 | 710 |
return node_observer_proxy.attached(); |
| 703 | 711 |
} |
| 704 | 712 |
|
| 705 | 713 |
void clear() {
|
| 706 | 714 |
added_nodes.clear(); |
| 707 | 715 |
added_arcs.clear(); |
| 708 | 716 |
} |
| 709 | 717 |
|
| 710 | 718 |
public: |
| 711 | 719 |
|
| 712 | 720 |
/// \brief Default constructor. |
| 713 | 721 |
/// |
| 714 | 722 |
/// Default constructor. |
| 715 |
/// |
|
| 723 |
/// You have to call save() to actually make a snapshot. |
|
| 716 | 724 |
Snapshot() |
| 717 | 725 |
: digraph(0), node_observer_proxy(*this), |
| 718 | 726 |
arc_observer_proxy(*this) {}
|
| 719 | 727 |
|
| 720 | 728 |
/// \brief Constructor that immediately makes a snapshot. |
| 721 | 729 |
/// |
| 722 |
/// This constructor immediately makes a snapshot of the digraph. |
|
| 723 |
/// \param _digraph The digraph we make a snapshot of. |
|
| 724 |
|
|
| 730 |
/// This constructor immediately makes a snapshot of the given digraph. |
|
| 731 |
Snapshot(ListDigraph &gr) |
|
| 725 | 732 |
: node_observer_proxy(*this), |
| 726 | 733 |
arc_observer_proxy(*this) {
|
| 727 |
attach( |
|
| 734 |
attach(gr); |
|
| 728 | 735 |
} |
| 729 | 736 |
|
| 730 | 737 |
/// \brief Make a snapshot. |
| 731 | 738 |
/// |
| 732 |
/// Make a snapshot of the digraph. |
|
| 733 |
/// |
|
| 734 |
/// This function |
|
| 739 |
/// This function makes a snapshot of the given digraph. |
|
| 740 |
/// It can be called more than once. In case of a repeated |
|
| 735 | 741 |
/// call, the previous snapshot gets lost. |
| 736 |
/// \param _digraph The digraph we make the snapshot of. |
|
| 737 |
void save(ListDigraph &_digraph) {
|
|
| 742 |
void save(ListDigraph &gr) {
|
|
| 738 | 743 |
if (attached()) {
|
| 739 | 744 |
detach(); |
| 740 | 745 |
clear(); |
| 741 | 746 |
} |
| 742 |
attach( |
|
| 747 |
attach(gr); |
|
| 743 | 748 |
} |
| 744 | 749 |
|
| 745 | 750 |
/// \brief Undo the changes until the last snapshot. |
| 746 |
// |
|
| 747 |
/// Undo the changes until the last snapshot created by save(). |
|
| 751 |
/// |
|
| 752 |
/// This function undos the changes until the last snapshot |
|
| 753 |
/// created by save() or Snapshot(ListDigraph&). |
|
| 754 |
/// |
|
| 755 |
/// \warning This method invalidates the snapshot, i.e. repeated |
|
| 756 |
/// restoring is not supported unless you call save() again. |
|
| 748 | 757 |
void restore() {
|
| 749 | 758 |
detach(); |
| 750 | 759 |
for(std::list<Arc>::iterator it = added_arcs.begin(); |
| 751 | 760 |
it != added_arcs.end(); ++it) {
|
| 752 | 761 |
digraph->erase(*it); |
| 753 | 762 |
} |
| 754 | 763 |
for(std::list<Node>::iterator it = added_nodes.begin(); |
| 755 | 764 |
it != added_nodes.end(); ++it) {
|
| 756 | 765 |
digraph->erase(*it); |
| 757 | 766 |
} |
| 758 | 767 |
clear(); |
| 759 | 768 |
} |
| 760 | 769 |
|
| 761 |
/// \brief |
|
| 770 |
/// \brief Returns \c true if the snapshot is valid. |
|
| 762 | 771 |
/// |
| 763 |
/// |
|
| 772 |
/// This function returns \c true if the snapshot is valid. |
|
| 764 | 773 |
bool valid() const {
|
| 765 | 774 |
return attached(); |
| 766 | 775 |
} |
| 767 | 776 |
}; |
| 768 | 777 |
|
| 769 | 778 |
}; |
| 770 | 779 |
|
| 771 | 780 |
///@} |
| 772 | 781 |
|
| 773 | 782 |
class ListGraphBase {
|
| 774 | 783 |
|
| 775 | 784 |
protected: |
| 776 | 785 |
|
| 777 | 786 |
struct NodeT {
|
| 778 | 787 |
int first_out; |
| 779 | 788 |
int prev, next; |
| 780 | 789 |
}; |
| 781 | 790 |
|
| 782 | 791 |
struct ArcT {
|
| 783 | 792 |
int target; |
| 784 | 793 |
int prev_out, next_out; |
| 785 | 794 |
}; |
| 786 | 795 |
|
| 787 | 796 |
std::vector<NodeT> nodes; |
| 788 | 797 |
|
| 789 | 798 |
int first_node; |
| 790 | 799 |
|
| 791 | 800 |
int first_free_node; |
| 792 | 801 |
|
| 793 | 802 |
std::vector<ArcT> arcs; |
| 794 | 803 |
|
| 795 | 804 |
int first_free_arc; |
| 796 | 805 |
|
| 797 | 806 |
public: |
| 798 | 807 |
|
| 799 |
typedef ListGraphBase Digraph; |
|
| 800 |
|
|
| 801 |
class Node; |
|
| 802 |
class Arc; |
|
| 803 |
|
|
| 808 |
typedef ListGraphBase Graph; |
|
| 804 | 809 |
|
| 805 | 810 |
class Node {
|
| 806 | 811 |
friend class ListGraphBase; |
| 807 | 812 |
protected: |
| 808 | 813 |
|
| 809 | 814 |
int id; |
| 810 | 815 |
explicit Node(int pid) { id = pid;}
|
| 811 | 816 |
|
| 812 | 817 |
public: |
| 813 | 818 |
Node() {}
|
| 814 | 819 |
Node (Invalid) { id = -1; }
|
| 815 | 820 |
bool operator==(const Node& node) const {return id == node.id;}
|
| 816 | 821 |
bool operator!=(const Node& node) const {return id != node.id;}
|
| 817 | 822 |
bool operator<(const Node& node) const {return id < node.id;}
|
| 818 | 823 |
}; |
| 819 | 824 |
|
| 820 | 825 |
class Edge {
|
| 821 | 826 |
friend class ListGraphBase; |
| 822 | 827 |
protected: |
| 823 | 828 |
|
| 824 | 829 |
int id; |
| 825 | 830 |
explicit Edge(int pid) { id = pid;}
|
| 826 | 831 |
|
| 827 | 832 |
public: |
| 828 | 833 |
Edge() {}
|
| 829 | 834 |
Edge (Invalid) { id = -1; }
|
| 830 | 835 |
bool operator==(const Edge& edge) const {return id == edge.id;}
|
| 831 | 836 |
bool operator!=(const Edge& edge) const {return id != edge.id;}
|
| 832 | 837 |
bool operator<(const Edge& edge) const {return id < edge.id;}
|
| 833 | 838 |
}; |
| 834 | 839 |
|
| 835 | 840 |
class Arc {
|
| 836 | 841 |
friend class ListGraphBase; |
| 837 | 842 |
protected: |
| 838 | 843 |
|
| 839 | 844 |
int id; |
| 840 | 845 |
explicit Arc(int pid) { id = pid;}
|
| 841 | 846 |
|
| 842 | 847 |
public: |
| 843 | 848 |
operator Edge() const {
|
| 844 | 849 |
return id != -1 ? edgeFromId(id / 2) : INVALID; |
| 845 | 850 |
} |
| 846 | 851 |
|
| 847 | 852 |
Arc() {}
|
| 848 | 853 |
Arc (Invalid) { id = -1; }
|
| 849 | 854 |
bool operator==(const Arc& arc) const {return id == arc.id;}
|
| 850 | 855 |
bool operator!=(const Arc& arc) const {return id != arc.id;}
|
| 851 | 856 |
bool operator<(const Arc& arc) const {return id < arc.id;}
|
| 852 | 857 |
}; |
| 853 | 858 |
|
| 854 |
|
|
| 855 |
|
|
| 856 | 859 |
ListGraphBase() |
| 857 | 860 |
: nodes(), first_node(-1), |
| 858 | 861 |
first_free_node(-1), arcs(), first_free_arc(-1) {}
|
| 859 | 862 |
|
| 860 | 863 |
|
| 861 | 864 |
int maxNodeId() const { return nodes.size()-1; }
|
| 862 | 865 |
int maxEdgeId() const { return arcs.size() / 2 - 1; }
|
| 863 | 866 |
int maxArcId() const { return arcs.size()-1; }
|
| 864 | 867 |
|
| 865 | 868 |
Node source(Arc e) const { return Node(arcs[e.id ^ 1].target); }
|
| 866 | 869 |
Node target(Arc e) const { return Node(arcs[e.id].target); }
|
| 867 | 870 |
|
| 868 | 871 |
Node u(Edge e) const { return Node(arcs[2 * e.id].target); }
|
| 869 | 872 |
Node v(Edge e) const { return Node(arcs[2 * e.id + 1].target); }
|
| 870 | 873 |
|
| 871 | 874 |
static bool direction(Arc e) {
|
| 872 | 875 |
return (e.id & 1) == 1; |
| 873 | 876 |
} |
| 874 | 877 |
|
| 875 | 878 |
static Arc direct(Edge e, bool d) {
|
| 876 | 879 |
return Arc(e.id * 2 + (d ? 1 : 0)); |
| 877 | 880 |
} |
| 878 | 881 |
|
| 879 | 882 |
void first(Node& node) const {
|
| 880 | 883 |
node.id = first_node; |
| 881 | 884 |
} |
| 882 | 885 |
|
| 883 | 886 |
void next(Node& node) const {
|
| 884 | 887 |
node.id = nodes[node.id].next; |
| 885 | 888 |
} |
| 886 | 889 |
|
| 887 | 890 |
void first(Arc& e) const {
|
| 888 | 891 |
int n = first_node; |
| 889 | 892 |
while (n != -1 && nodes[n].first_out == -1) {
|
| 890 | 893 |
n = nodes[n].next; |
| 891 | 894 |
} |
| 892 | 895 |
e.id = (n == -1) ? -1 : nodes[n].first_out; |
| 893 | 896 |
} |
| 894 | 897 |
|
| 895 | 898 |
void next(Arc& e) const {
|
| 896 | 899 |
if (arcs[e.id].next_out != -1) {
|
| 897 | 900 |
e.id = arcs[e.id].next_out; |
| 898 | 901 |
} else {
|
| 899 | 902 |
int n = nodes[arcs[e.id ^ 1].target].next; |
| 900 | 903 |
while(n != -1 && nodes[n].first_out == -1) {
|
| 901 | 904 |
n = nodes[n].next; |
| 902 | 905 |
} |
| 903 | 906 |
e.id = (n == -1) ? -1 : nodes[n].first_out; |
| 904 | 907 |
} |
| 905 | 908 |
} |
| 906 | 909 |
|
| 907 | 910 |
void first(Edge& e) const {
|
| 908 | 911 |
int n = first_node; |
| 909 | 912 |
while (n != -1) {
|
| 910 | 913 |
e.id = nodes[n].first_out; |
| 911 | 914 |
while ((e.id & 1) != 1) {
|
| 912 | 915 |
e.id = arcs[e.id].next_out; |
| 913 | 916 |
} |
| 914 | 917 |
if (e.id != -1) {
|
| 915 | 918 |
e.id /= 2; |
| 916 | 919 |
return; |
| 917 | 920 |
} |
| 918 | 921 |
n = nodes[n].next; |
| 919 | 922 |
} |
| 920 | 923 |
e.id = -1; |
| 921 | 924 |
} |
| 922 | 925 |
|
| 923 | 926 |
void next(Edge& e) const {
|
| 924 | 927 |
int n = arcs[e.id * 2].target; |
| 925 | 928 |
e.id = arcs[(e.id * 2) | 1].next_out; |
| 926 | 929 |
while ((e.id & 1) != 1) {
|
| 927 | 930 |
e.id = arcs[e.id].next_out; |
| 928 | 931 |
} |
| 929 | 932 |
if (e.id != -1) {
|
| 930 | 933 |
e.id /= 2; |
| 931 | 934 |
return; |
| 932 | 935 |
} |
| 933 | 936 |
n = nodes[n].next; |
| 934 | 937 |
while (n != -1) {
|
| 935 | 938 |
e.id = nodes[n].first_out; |
| 936 | 939 |
while ((e.id & 1) != 1) {
|
| 937 | 940 |
e.id = arcs[e.id].next_out; |
| 938 | 941 |
} |
| 939 | 942 |
if (e.id != -1) {
|
| 940 | 943 |
e.id /= 2; |
| 941 | 944 |
return; |
| 942 | 945 |
} |
| 943 | 946 |
n = nodes[n].next; |
| 944 | 947 |
} |
| 945 | 948 |
e.id = -1; |
| 946 | 949 |
} |
| 947 | 950 |
|
| 948 | 951 |
void firstOut(Arc &e, const Node& v) const {
|
| 949 | 952 |
e.id = nodes[v.id].first_out; |
| 950 | 953 |
} |
| 951 | 954 |
void nextOut(Arc &e) const {
|
| 952 | 955 |
e.id = arcs[e.id].next_out; |
| 953 | 956 |
} |
| 954 | 957 |
|
| 955 | 958 |
void firstIn(Arc &e, const Node& v) const {
|
| 956 | 959 |
e.id = ((nodes[v.id].first_out) ^ 1); |
| 957 | 960 |
if (e.id == -2) e.id = -1; |
| 958 | 961 |
} |
| 959 | 962 |
void nextIn(Arc &e) const {
|
| 960 | 963 |
e.id = ((arcs[e.id ^ 1].next_out) ^ 1); |
| 961 | 964 |
if (e.id == -2) e.id = -1; |
| 962 | 965 |
} |
| 963 | 966 |
|
| 964 | 967 |
void firstInc(Edge &e, bool& d, const Node& v) const {
|
| 965 | 968 |
int a = nodes[v.id].first_out; |
| 966 | 969 |
if (a != -1 ) {
|
| 967 | 970 |
e.id = a / 2; |
| 968 | 971 |
d = ((a & 1) == 1); |
| 969 | 972 |
} else {
|
| 970 | 973 |
e.id = -1; |
| 971 | 974 |
d = true; |
| 972 | 975 |
} |
| 973 | 976 |
} |
| 974 | 977 |
void nextInc(Edge &e, bool& d) const {
|
| 975 | 978 |
int a = (arcs[(e.id * 2) | (d ? 1 : 0)].next_out); |
| 976 | 979 |
if (a != -1 ) {
|
| 977 | 980 |
e.id = a / 2; |
| 978 | 981 |
d = ((a & 1) == 1); |
| 979 | 982 |
} else {
|
| 980 | 983 |
e.id = -1; |
| 981 | 984 |
d = true; |
| 982 | 985 |
} |
| 983 | 986 |
} |
| 984 | 987 |
|
| 985 | 988 |
static int id(Node v) { return v.id; }
|
| 986 | 989 |
static int id(Arc e) { return e.id; }
|
| 987 | 990 |
static int id(Edge e) { return e.id; }
|
| 988 | 991 |
|
| 989 | 992 |
static Node nodeFromId(int id) { return Node(id);}
|
| 990 | 993 |
static Arc arcFromId(int id) { return Arc(id);}
|
| 991 | 994 |
static Edge edgeFromId(int id) { return Edge(id);}
|
| 992 | 995 |
|
| 993 | 996 |
bool valid(Node n) const {
|
| 994 | 997 |
return n.id >= 0 && n.id < static_cast<int>(nodes.size()) && |
| 995 | 998 |
nodes[n.id].prev != -2; |
| 996 | 999 |
} |
| 997 | 1000 |
|
| 998 | 1001 |
bool valid(Arc a) const {
|
| 999 | 1002 |
return a.id >= 0 && a.id < static_cast<int>(arcs.size()) && |
| 1000 | 1003 |
arcs[a.id].prev_out != -2; |
| 1001 | 1004 |
} |
| 1002 | 1005 |
|
| 1003 | 1006 |
bool valid(Edge e) const {
|
| 1004 | 1007 |
return e.id >= 0 && 2 * e.id < static_cast<int>(arcs.size()) && |
| 1005 | 1008 |
arcs[2 * e.id].prev_out != -2; |
| 1006 | 1009 |
} |
| 1007 | 1010 |
|
| 1008 | 1011 |
Node addNode() {
|
| 1009 | 1012 |
int n; |
| 1010 | 1013 |
|
| 1011 | 1014 |
if(first_free_node==-1) {
|
| 1012 | 1015 |
n = nodes.size(); |
| 1013 | 1016 |
nodes.push_back(NodeT()); |
| 1014 | 1017 |
} else {
|
| 1015 | 1018 |
n = first_free_node; |
| 1016 | 1019 |
first_free_node = nodes[n].next; |
| 1017 | 1020 |
} |
| 1018 | 1021 |
|
| 1019 | 1022 |
nodes[n].next = first_node; |
| 1020 | 1023 |
if (first_node != -1) nodes[first_node].prev = n; |
| 1021 | 1024 |
first_node = n; |
| 1022 | 1025 |
nodes[n].prev = -1; |
| 1023 | 1026 |
|
| 1024 | 1027 |
nodes[n].first_out = -1; |
| 1025 | 1028 |
|
| 1026 | 1029 |
return Node(n); |
| 1027 | 1030 |
} |
| 1028 | 1031 |
|
| 1029 | 1032 |
Edge addEdge(Node u, Node v) {
|
| 1030 | 1033 |
int n; |
| 1031 | 1034 |
|
| 1032 | 1035 |
if (first_free_arc == -1) {
|
| 1033 | 1036 |
n = arcs.size(); |
| 1034 | 1037 |
arcs.push_back(ArcT()); |
| 1035 | 1038 |
arcs.push_back(ArcT()); |
| 1036 | 1039 |
} else {
|
| 1037 | 1040 |
n = first_free_arc; |
| 1038 | 1041 |
first_free_arc = arcs[n].next_out; |
| 1039 | 1042 |
} |
| 1040 | 1043 |
|
| 1041 | 1044 |
arcs[n].target = u.id; |
| 1042 | 1045 |
arcs[n | 1].target = v.id; |
| 1043 | 1046 |
|
| 1044 | 1047 |
arcs[n].next_out = nodes[v.id].first_out; |
| 1045 | 1048 |
if (nodes[v.id].first_out != -1) {
|
| 1046 | 1049 |
arcs[nodes[v.id].first_out].prev_out = n; |
| 1047 | 1050 |
} |
| 1048 | 1051 |
arcs[n].prev_out = -1; |
| 1049 | 1052 |
nodes[v.id].first_out = n; |
| 1050 | 1053 |
|
| 1051 | 1054 |
arcs[n | 1].next_out = nodes[u.id].first_out; |
| 1052 | 1055 |
if (nodes[u.id].first_out != -1) {
|
| 1053 | 1056 |
arcs[nodes[u.id].first_out].prev_out = (n | 1); |
| 1054 | 1057 |
} |
| 1055 | 1058 |
arcs[n | 1].prev_out = -1; |
| 1056 | 1059 |
nodes[u.id].first_out = (n | 1); |
| 1057 | 1060 |
|
| 1058 | 1061 |
return Edge(n / 2); |
| 1059 | 1062 |
} |
| 1060 | 1063 |
|
| 1061 | 1064 |
void erase(const Node& node) {
|
| 1062 | 1065 |
int n = node.id; |
| 1063 | 1066 |
|
| 1064 | 1067 |
if(nodes[n].next != -1) {
|
| 1065 | 1068 |
nodes[nodes[n].next].prev = nodes[n].prev; |
| 1066 | 1069 |
} |
| 1067 | 1070 |
|
| 1068 | 1071 |
if(nodes[n].prev != -1) {
|
| 1069 | 1072 |
nodes[nodes[n].prev].next = nodes[n].next; |
| 1070 | 1073 |
} else {
|
| 1071 | 1074 |
first_node = nodes[n].next; |
| 1072 | 1075 |
} |
| 1073 | 1076 |
|
| 1074 | 1077 |
nodes[n].next = first_free_node; |
| 1075 | 1078 |
first_free_node = n; |
| 1076 | 1079 |
nodes[n].prev = -2; |
| 1077 | 1080 |
} |
| 1078 | 1081 |
|
| 1079 | 1082 |
void erase(const Edge& edge) {
|
| 1080 | 1083 |
int n = edge.id * 2; |
| 1081 | 1084 |
|
| 1082 | 1085 |
if (arcs[n].next_out != -1) {
|
| 1083 | 1086 |
arcs[arcs[n].next_out].prev_out = arcs[n].prev_out; |
| 1084 | 1087 |
} |
| 1085 | 1088 |
|
| 1086 | 1089 |
if (arcs[n].prev_out != -1) {
|
| 1087 | 1090 |
arcs[arcs[n].prev_out].next_out = arcs[n].next_out; |
| 1088 | 1091 |
} else {
|
| 1089 | 1092 |
nodes[arcs[n | 1].target].first_out = arcs[n].next_out; |
| 1090 | 1093 |
} |
| 1091 | 1094 |
|
| 1092 | 1095 |
if (arcs[n | 1].next_out != -1) {
|
| 1093 | 1096 |
arcs[arcs[n | 1].next_out].prev_out = arcs[n | 1].prev_out; |
| 1094 | 1097 |
} |
| 1095 | 1098 |
|
| 1096 | 1099 |
if (arcs[n | 1].prev_out != -1) {
|
| 1097 | 1100 |
arcs[arcs[n | 1].prev_out].next_out = arcs[n | 1].next_out; |
| 1098 | 1101 |
} else {
|
| 1099 | 1102 |
nodes[arcs[n].target].first_out = arcs[n | 1].next_out; |
| 1100 | 1103 |
} |
| 1101 | 1104 |
|
| 1102 | 1105 |
arcs[n].next_out = first_free_arc; |
| 1103 | 1106 |
first_free_arc = n; |
| 1104 | 1107 |
arcs[n].prev_out = -2; |
| 1105 | 1108 |
arcs[n | 1].prev_out = -2; |
| 1106 | 1109 |
|
| 1107 | 1110 |
} |
| 1108 | 1111 |
|
| 1109 | 1112 |
void clear() {
|
| 1110 | 1113 |
arcs.clear(); |
| 1111 | 1114 |
nodes.clear(); |
| 1112 | 1115 |
first_node = first_free_node = first_free_arc = -1; |
| 1113 | 1116 |
} |
| 1114 | 1117 |
|
| 1115 | 1118 |
protected: |
| 1116 | 1119 |
|
| 1117 | 1120 |
void changeV(Edge e, Node n) {
|
| 1118 | 1121 |
if(arcs[2 * e.id].next_out != -1) {
|
| 1119 | 1122 |
arcs[arcs[2 * e.id].next_out].prev_out = arcs[2 * e.id].prev_out; |
| 1120 | 1123 |
} |
| 1121 | 1124 |
if(arcs[2 * e.id].prev_out != -1) {
|
| 1122 | 1125 |
arcs[arcs[2 * e.id].prev_out].next_out = |
| 1123 | 1126 |
arcs[2 * e.id].next_out; |
| 1124 | 1127 |
} else {
|
| 1125 | 1128 |
nodes[arcs[(2 * e.id) | 1].target].first_out = |
| 1126 | 1129 |
arcs[2 * e.id].next_out; |
| 1127 | 1130 |
} |
| 1128 | 1131 |
|
| 1129 | 1132 |
if (nodes[n.id].first_out != -1) {
|
| 1130 | 1133 |
arcs[nodes[n.id].first_out].prev_out = 2 * e.id; |
| 1131 | 1134 |
} |
| 1132 | 1135 |
arcs[(2 * e.id) | 1].target = n.id; |
| 1133 | 1136 |
arcs[2 * e.id].prev_out = -1; |
| 1134 | 1137 |
arcs[2 * e.id].next_out = nodes[n.id].first_out; |
| 1135 | 1138 |
nodes[n.id].first_out = 2 * e.id; |
| 1136 | 1139 |
} |
| 1137 | 1140 |
|
| 1138 | 1141 |
void changeU(Edge e, Node n) {
|
| 1139 | 1142 |
if(arcs[(2 * e.id) | 1].next_out != -1) {
|
| 1140 | 1143 |
arcs[arcs[(2 * e.id) | 1].next_out].prev_out = |
| 1141 | 1144 |
arcs[(2 * e.id) | 1].prev_out; |
| 1142 | 1145 |
} |
| 1143 | 1146 |
if(arcs[(2 * e.id) | 1].prev_out != -1) {
|
| 1144 | 1147 |
arcs[arcs[(2 * e.id) | 1].prev_out].next_out = |
| 1145 | 1148 |
arcs[(2 * e.id) | 1].next_out; |
| 1146 | 1149 |
} else {
|
| 1147 | 1150 |
nodes[arcs[2 * e.id].target].first_out = |
| 1148 | 1151 |
arcs[(2 * e.id) | 1].next_out; |
| 1149 | 1152 |
} |
| 1150 | 1153 |
|
| 1151 | 1154 |
if (nodes[n.id].first_out != -1) {
|
| 1152 | 1155 |
arcs[nodes[n.id].first_out].prev_out = ((2 * e.id) | 1); |
| 1153 | 1156 |
} |
| 1154 | 1157 |
arcs[2 * e.id].target = n.id; |
| 1155 | 1158 |
arcs[(2 * e.id) | 1].prev_out = -1; |
| 1156 | 1159 |
arcs[(2 * e.id) | 1].next_out = nodes[n.id].first_out; |
| 1157 | 1160 |
nodes[n.id].first_out = ((2 * e.id) | 1); |
| 1158 | 1161 |
} |
| 1159 | 1162 |
|
| 1160 | 1163 |
}; |
| 1161 | 1164 |
|
| 1162 | 1165 |
typedef GraphExtender<ListGraphBase> ExtendedListGraphBase; |
| 1163 | 1166 |
|
| 1164 | 1167 |
|
| 1165 | 1168 |
/// \addtogroup graphs |
| 1166 | 1169 |
/// @{
|
| 1167 | 1170 |
|
| 1168 | 1171 |
///A general undirected graph structure. |
| 1169 | 1172 |
|
| 1170 |
///\ref ListGraph is a simple and fast <em>undirected graph</em> |
|
| 1171 |
///implementation based on static linked lists that are stored in |
|
| 1173 |
///\ref ListGraph is a versatile and fast undirected graph |
|
| 1174 |
///implementation based on linked lists that are stored in |
|
| 1172 | 1175 |
///\c std::vector structures. |
| 1173 | 1176 |
/// |
| 1174 |
///It conforms to the \ref concepts::Graph "Graph concept" and it |
|
| 1175 |
///also provides several useful additional functionalities. |
|
| 1176 |
/// |
|
| 1177 |
///This type fully conforms to the \ref concepts::Graph "Graph concept" |
|
| 1178 |
///and it also provides several useful additional functionalities. |
|
| 1179 |
///Most of its member functions and nested classes are documented |
|
| 1177 | 1180 |
///only in the concept class. |
| 1178 | 1181 |
/// |
| 1179 |
///An important extra feature of this graph implementation is that |
|
| 1180 |
///its maps are real \ref concepts::ReferenceMap "reference map"s. |
|
| 1181 |
/// |
|
| 1182 | 1182 |
///\sa concepts::Graph |
| 1183 |
///\sa ListDigraph |
|
| 1184 |
class ListGraph : public ExtendedListGraphBase {
|
|
| 1185 |
typedef ExtendedListGraphBase Parent; |
|
| 1183 | 1186 |
|
| 1184 |
class ListGraph : public ExtendedListGraphBase {
|
|
| 1185 | 1187 |
private: |
| 1186 |
///ListGraph is \e not copy constructible. Use copyGraph() instead. |
|
| 1187 |
|
|
| 1188 |
///ListGraph is \e not copy constructible. Use copyGraph() instead. |
|
| 1189 |
/// |
|
| 1188 |
/// Graphs are \e not copy constructible. Use GraphCopy instead. |
|
| 1190 | 1189 |
ListGraph(const ListGraph &) :ExtendedListGraphBase() {};
|
| 1191 |
///\brief Assignment of ListGraph to another one is \e not allowed. |
|
| 1192 |
///Use copyGraph() instead. |
|
| 1193 |
|
|
| 1194 |
///Assignment of ListGraph to another one is \e not allowed. |
|
| 1195 |
/// |
|
| 1190 |
/// \brief Assignment of a graph to another one is \e not allowed. |
|
| 1191 |
/// Use GraphCopy instead. |
|
| 1196 | 1192 |
void operator=(const ListGraph &) {}
|
| 1197 | 1193 |
public: |
| 1198 | 1194 |
/// Constructor |
| 1199 | 1195 |
|
| 1200 | 1196 |
/// Constructor. |
| 1201 | 1197 |
/// |
| 1202 | 1198 |
ListGraph() {}
|
| 1203 | 1199 |
|
| 1204 |
typedef ExtendedListGraphBase Parent; |
|
| 1205 |
|
|
| 1206 | 1200 |
typedef Parent::OutArcIt IncEdgeIt; |
| 1207 | 1201 |
|
| 1208 | 1202 |
/// \brief Add a new node to the graph. |
| 1209 | 1203 |
/// |
| 1210 |
/// Add a new node to the graph. |
|
| 1211 |
/// \return the new node. |
|
| 1204 |
/// This function adds a new node to the graph. |
|
| 1205 |
/// \return The new node. |
|
| 1212 | 1206 |
Node addNode() { return Parent::addNode(); }
|
| 1213 | 1207 |
|
| 1214 | 1208 |
/// \brief Add a new edge to the graph. |
| 1215 | 1209 |
/// |
| 1216 |
/// Add a new edge to the graph with source node \c s |
|
| 1217 |
/// and target node \c t. |
|
| 1218 |
/// \return the new edge. |
|
| 1219 |
Edge addEdge(const Node& s, const Node& t) {
|
|
| 1220 |
|
|
| 1210 |
/// This function adds a new edge to the graph between nodes |
|
| 1211 |
/// \c u and \c v with inherent orientation from node \c u to |
|
| 1212 |
/// node \c v. |
|
| 1213 |
/// \return The new edge. |
|
| 1214 |
Edge addEdge(Node u, Node v) {
|
|
| 1215 |
return Parent::addEdge(u, v); |
|
| 1221 | 1216 |
} |
| 1222 | 1217 |
|
| 1223 |
/// |
|
| 1218 |
///\brief Erase a node from the graph. |
|
| 1224 | 1219 |
/// |
| 1225 |
/// |
|
| 1220 |
/// This function erases the given node from the graph. |
|
| 1221 |
void erase(Node n) { Parent::erase(n); }
|
|
| 1222 |
|
|
| 1223 |
///\brief Erase an edge from the graph. |
|
| 1226 | 1224 |
/// |
| 1227 |
void erase(const Node& n) { Parent::erase(n); }
|
|
| 1228 |
|
|
| 1229 |
/// \brief Erase an edge from the graph. |
|
| 1230 |
/// |
|
| 1231 |
/// Erase an edge from the graph. |
|
| 1232 |
/// |
|
| 1233 |
|
|
| 1225 |
/// This function erases the given edge from the graph. |
|
| 1226 |
void erase(Edge e) { Parent::erase(e); }
|
|
| 1234 | 1227 |
/// Node validity check |
| 1235 | 1228 |
|
| 1236 |
/// This function gives back true if the given node is valid, |
|
| 1237 |
/// ie. it is a real node of the graph. |
|
| 1229 |
/// This function gives back \c true if the given node is valid, |
|
| 1230 |
/// i.e. it is a real node of the graph. |
|
| 1238 | 1231 |
/// |
| 1239 |
/// \warning A Node pointing to a removed item |
|
| 1240 |
/// could become valid again later if new nodes are |
|
| 1232 |
/// \warning A removed node could become valid again if new nodes are |
|
| 1241 | 1233 |
/// added to the graph. |
| 1242 | 1234 |
bool valid(Node n) const { return Parent::valid(n); }
|
| 1235 |
/// Edge validity check |
|
| 1236 |
|
|
| 1237 |
/// This function gives back \c true if the given edge is valid, |
|
| 1238 |
/// i.e. it is a real edge of the graph. |
|
| 1239 |
/// |
|
| 1240 |
/// \warning A removed edge could become valid again if new edges are |
|
| 1241 |
/// added to the graph. |
|
| 1242 |
bool valid(Edge e) const { return Parent::valid(e); }
|
|
| 1243 | 1243 |
/// Arc validity check |
| 1244 | 1244 |
|
| 1245 |
/// This function gives back true if the given arc is valid, |
|
| 1246 |
/// ie. it is a real arc of the graph. |
|
| 1245 |
/// This function gives back \c true if the given arc is valid, |
|
| 1246 |
/// i.e. it is a real arc of the graph. |
|
| 1247 | 1247 |
/// |
| 1248 |
/// \warning An Arc pointing to a removed item |
|
| 1249 |
/// could become valid again later if new edges are |
|
| 1248 |
/// \warning A removed arc could become valid again if new edges are |
|
| 1250 | 1249 |
/// added to the graph. |
| 1251 | 1250 |
bool valid(Arc a) const { return Parent::valid(a); }
|
| 1252 |
/// Edge validity check |
|
| 1253 | 1251 |
|
| 1254 |
/// This function gives back true if the given edge is valid, |
|
| 1255 |
/// ie. it is a real arc of the graph. |
|
| 1252 |
/// \brief Change the first node of an edge. |
|
| 1256 | 1253 |
/// |
| 1257 |
/// \warning A Edge pointing to a removed item |
|
| 1258 |
/// could become valid again later if new edges are |
|
| 1259 |
/// added to the graph. |
|
| 1260 |
bool valid(Edge e) const { return Parent::valid(e); }
|
|
| 1261 |
/// |
|
| 1254 |
/// This function changes the first node of the given edge \c e to \c n. |
|
| 1262 | 1255 |
/// |
| 1263 |
/// This function changes the end \c u of \c e to node \c n. |
|
| 1264 |
/// |
|
| 1265 |
///\note The <tt>EdgeIt</tt>s and <tt>ArcIt</tt>s referencing the |
|
| 1266 |
///changed edge are invalidated and if the changed node is the |
|
| 1267 |
///base node of an iterator then this iterator is also |
|
| 1268 |
///invalidated. |
|
| 1256 |
///\note \c EdgeIt and \c ArcIt iterators referencing the |
|
| 1257 |
///changed edge are invalidated and all other iterators whose |
|
| 1258 |
///base node is the changed node are also invalidated. |
|
| 1269 | 1259 |
/// |
| 1270 | 1260 |
///\warning This functionality cannot be used together with the |
| 1271 | 1261 |
///Snapshot feature. |
| 1272 | 1262 |
void changeU(Edge e, Node n) {
|
| 1273 | 1263 |
Parent::changeU(e,n); |
| 1274 | 1264 |
} |
| 1275 |
/// \brief Change the |
|
| 1265 |
/// \brief Change the second node of an edge. |
|
| 1276 | 1266 |
/// |
| 1277 |
/// This function changes the |
|
| 1267 |
/// This function changes the second node of the given edge \c e to \c n. |
|
| 1278 | 1268 |
/// |
| 1279 |
///\note The <tt>EdgeIt</tt>s referencing the changed edge remain |
|
| 1280 |
///valid, however <tt>ArcIt</tt>s and if the changed node is the |
|
| 1281 |
/// |
|
| 1269 |
///\note \c EdgeIt iterators referencing the changed edge remain |
|
| 1270 |
///valid, however \c ArcIt iterators referencing the changed edge and |
|
| 1271 |
///all other iterators whose base node is the changed node are also |
|
| 1272 |
///invalidated. |
|
| 1282 | 1273 |
/// |
| 1283 | 1274 |
///\warning This functionality cannot be used together with the |
| 1284 | 1275 |
///Snapshot feature. |
| 1285 | 1276 |
void changeV(Edge e, Node n) {
|
| 1286 | 1277 |
Parent::changeV(e,n); |
| 1287 | 1278 |
} |
| 1279 |
|
|
| 1288 | 1280 |
/// \brief Contract two nodes. |
| 1289 | 1281 |
/// |
| 1290 |
/// This function contracts two nodes. |
|
| 1291 |
/// Node \p b will be removed but instead of deleting |
|
| 1292 |
/// its neighboring arcs, they will be joined to \p a. |
|
| 1293 |
/// The last parameter \p r controls whether to remove loops. \c true |
|
| 1294 |
/// |
|
| 1282 |
/// This function contracts the given two nodes. |
|
| 1283 |
/// Node \c b is removed, but instead of deleting |
|
| 1284 |
/// its incident edges, they are joined to node \c a. |
|
| 1285 |
/// If the last parameter \c r is \c true (this is the default value), |
|
| 1286 |
/// then the newly created loops are removed. |
|
| 1295 | 1287 |
/// |
| 1296 |
/// \note The <tt>ArcIt</tt>s referencing a moved arc remain |
|
| 1297 |
/// valid. |
|
| 1288 |
/// \note The moved edges are joined to node \c a using changeU() |
|
| 1289 |
/// or changeV(), thus all edge and arc iterators whose base node is |
|
| 1290 |
/// \c b are invalidated. |
|
| 1291 |
/// Moreover all iterators referencing node \c b or the removed |
|
| 1292 |
/// loops are also invalidated. Other iterators remain valid. |
|
| 1298 | 1293 |
/// |
| 1299 | 1294 |
///\warning This functionality cannot be used together with the |
| 1300 | 1295 |
///Snapshot feature. |
| 1301 | 1296 |
void contract(Node a, Node b, bool r = true) {
|
| 1302 | 1297 |
for(IncEdgeIt e(*this, b); e!=INVALID;) {
|
| 1303 | 1298 |
IncEdgeIt f = e; ++f; |
| 1304 | 1299 |
if (r && runningNode(e) == a) {
|
| 1305 | 1300 |
erase(e); |
| 1306 | 1301 |
} else if (u(e) == b) {
|
| 1307 | 1302 |
changeU(e, a); |
| 1308 | 1303 |
} else {
|
| 1309 | 1304 |
changeV(e, a); |
| 1310 | 1305 |
} |
| 1311 | 1306 |
e = f; |
| 1312 | 1307 |
} |
| 1313 | 1308 |
erase(b); |
| 1314 | 1309 |
} |
| 1315 | 1310 |
|
| 1311 |
///Clear the graph. |
|
| 1312 |
|
|
| 1313 |
///This function erases all nodes and arcs from the graph. |
|
| 1314 |
/// |
|
| 1315 |
void clear() {
|
|
| 1316 |
Parent::clear(); |
|
| 1317 |
} |
|
| 1318 |
|
|
| 1319 |
/// Reserve memory for nodes. |
|
| 1320 |
|
|
| 1321 |
/// Using this function, it is possible to avoid superfluous memory |
|
| 1322 |
/// allocation: if you know that the graph you want to build will |
|
| 1323 |
/// be large (e.g. it will contain millions of nodes and/or edges), |
|
| 1324 |
/// then it is worth reserving space for this amount before starting |
|
| 1325 |
/// to build the graph. |
|
| 1326 |
/// \sa reserveEdge() |
|
| 1327 |
void reserveNode(int n) { nodes.reserve(n); };
|
|
| 1328 |
|
|
| 1329 |
/// Reserve memory for edges. |
|
| 1330 |
|
|
| 1331 |
/// Using this function, it is possible to avoid superfluous memory |
|
| 1332 |
/// allocation: if you know that the graph you want to build will |
|
| 1333 |
/// be large (e.g. it will contain millions of nodes and/or edges), |
|
| 1334 |
/// then it is worth reserving space for this amount before starting |
|
| 1335 |
/// to build the graph. |
|
| 1336 |
/// \sa reserveNode() |
|
| 1337 |
void reserveEdge(int m) { arcs.reserve(2 * m); };
|
|
| 1316 | 1338 |
|
| 1317 | 1339 |
/// \brief Class to make a snapshot of the graph and restore |
| 1318 | 1340 |
/// it later. |
| 1319 | 1341 |
/// |
| 1320 | 1342 |
/// Class to make a snapshot of the graph and restore it later. |
| 1321 | 1343 |
/// |
| 1322 | 1344 |
/// The newly added nodes and edges can be removed |
| 1323 | 1345 |
/// using the restore() function. |
| 1324 | 1346 |
/// |
| 1325 |
/// \warning Edge and node deletions and other modifications |
|
| 1326 |
/// (e.g. changing nodes of edges, contracting nodes) cannot be |
|
| 1327 |
/// restored |
|
| 1347 |
/// \note After a state is restored, you cannot restore a later state, |
|
| 1348 |
/// i.e. you cannot add the removed nodes and edges again using |
|
| 1349 |
/// another Snapshot instance. |
|
| 1350 |
/// |
|
| 1351 |
/// \warning Node and edge deletions and other modifications |
|
| 1352 |
/// (e.g. changing the end-nodes of edges or contracting nodes) |
|
| 1353 |
/// cannot be restored. These events invalidate the snapshot. |
|
| 1354 |
/// However the edges and nodes that were added to the graph after |
|
| 1355 |
/// making the current snapshot can be removed without invalidating it. |
|
| 1328 | 1356 |
class Snapshot {
|
| 1329 | 1357 |
protected: |
| 1330 | 1358 |
|
| 1331 | 1359 |
typedef Parent::NodeNotifier NodeNotifier; |
| 1332 | 1360 |
|
| 1333 | 1361 |
class NodeObserverProxy : public NodeNotifier::ObserverBase {
|
| 1334 | 1362 |
public: |
| 1335 | 1363 |
|
| 1336 | 1364 |
NodeObserverProxy(Snapshot& _snapshot) |
| 1337 | 1365 |
: snapshot(_snapshot) {}
|
| 1338 | 1366 |
|
| 1339 | 1367 |
using NodeNotifier::ObserverBase::attach; |
| 1340 | 1368 |
using NodeNotifier::ObserverBase::detach; |
| 1341 | 1369 |
using NodeNotifier::ObserverBase::attached; |
| 1342 | 1370 |
|
| 1343 | 1371 |
protected: |
| 1344 | 1372 |
|
| 1345 | 1373 |
virtual void add(const Node& node) {
|
| 1346 | 1374 |
snapshot.addNode(node); |
| 1347 | 1375 |
} |
| 1348 | 1376 |
virtual void add(const std::vector<Node>& nodes) {
|
| 1349 | 1377 |
for (int i = nodes.size() - 1; i >= 0; ++i) {
|
| 1350 | 1378 |
snapshot.addNode(nodes[i]); |
| 1351 | 1379 |
} |
| 1352 | 1380 |
} |
| 1353 | 1381 |
virtual void erase(const Node& node) {
|
| 1354 | 1382 |
snapshot.eraseNode(node); |
| 1355 | 1383 |
} |
| 1356 | 1384 |
virtual void erase(const std::vector<Node>& nodes) {
|
| 1357 | 1385 |
for (int i = 0; i < int(nodes.size()); ++i) {
|
| 1358 | 1386 |
snapshot.eraseNode(nodes[i]); |
| 1359 | 1387 |
} |
| 1360 | 1388 |
} |
| 1361 | 1389 |
virtual void build() {
|
| 1362 | 1390 |
Node node; |
| 1363 | 1391 |
std::vector<Node> nodes; |
| 1364 | 1392 |
for (notifier()->first(node); node != INVALID; |
| 1365 | 1393 |
notifier()->next(node)) {
|
| 1366 | 1394 |
nodes.push_back(node); |
| 1367 | 1395 |
} |
| 1368 | 1396 |
for (int i = nodes.size() - 1; i >= 0; --i) {
|
| 1369 | 1397 |
snapshot.addNode(nodes[i]); |
| 1370 | 1398 |
} |
| 1371 | 1399 |
} |
| 1372 | 1400 |
virtual void clear() {
|
| 1373 | 1401 |
Node node; |
| 1374 | 1402 |
for (notifier()->first(node); node != INVALID; |
| 1375 | 1403 |
notifier()->next(node)) {
|
| 1376 | 1404 |
snapshot.eraseNode(node); |
| 1377 | 1405 |
} |
| 1378 | 1406 |
} |
| 1379 | 1407 |
|
| 1380 | 1408 |
Snapshot& snapshot; |
| 1381 | 1409 |
}; |
| 1382 | 1410 |
|
| 1383 | 1411 |
class EdgeObserverProxy : public EdgeNotifier::ObserverBase {
|
| 1384 | 1412 |
public: |
| 1385 | 1413 |
|
| 1386 | 1414 |
EdgeObserverProxy(Snapshot& _snapshot) |
| 1387 | 1415 |
: snapshot(_snapshot) {}
|
| 1388 | 1416 |
|
| 1389 | 1417 |
using EdgeNotifier::ObserverBase::attach; |
| 1390 | 1418 |
using EdgeNotifier::ObserverBase::detach; |
| 1391 | 1419 |
using EdgeNotifier::ObserverBase::attached; |
| 1392 | 1420 |
|
| 1393 | 1421 |
protected: |
| 1394 | 1422 |
|
| 1395 | 1423 |
virtual void add(const Edge& edge) {
|
| 1396 | 1424 |
snapshot.addEdge(edge); |
| 1397 | 1425 |
} |
| 1398 | 1426 |
virtual void add(const std::vector<Edge>& edges) {
|
| 1399 | 1427 |
for (int i = edges.size() - 1; i >= 0; ++i) {
|
| 1400 | 1428 |
snapshot.addEdge(edges[i]); |
| 1401 | 1429 |
} |
| 1402 | 1430 |
} |
| 1403 | 1431 |
virtual void erase(const Edge& edge) {
|
| 1404 | 1432 |
snapshot.eraseEdge(edge); |
| 1405 | 1433 |
} |
| 1406 | 1434 |
virtual void erase(const std::vector<Edge>& edges) {
|
| 1407 | 1435 |
for (int i = 0; i < int(edges.size()); ++i) {
|
| 1408 | 1436 |
snapshot.eraseEdge(edges[i]); |
| 1409 | 1437 |
} |
| 1410 | 1438 |
} |
| 1411 | 1439 |
virtual void build() {
|
| 1412 | 1440 |
Edge edge; |
| 1413 | 1441 |
std::vector<Edge> edges; |
| 1414 | 1442 |
for (notifier()->first(edge); edge != INVALID; |
| 1415 | 1443 |
notifier()->next(edge)) {
|
| 1416 | 1444 |
edges.push_back(edge); |
| 1417 | 1445 |
} |
| 1418 | 1446 |
for (int i = edges.size() - 1; i >= 0; --i) {
|
| 1419 | 1447 |
snapshot.addEdge(edges[i]); |
| 1420 | 1448 |
} |
| 1421 | 1449 |
} |
| 1422 | 1450 |
virtual void clear() {
|
| 1423 | 1451 |
Edge edge; |
| 1424 | 1452 |
for (notifier()->first(edge); edge != INVALID; |
| 1425 | 1453 |
notifier()->next(edge)) {
|
| 1426 | 1454 |
snapshot.eraseEdge(edge); |
| 1427 | 1455 |
} |
| 1428 | 1456 |
} |
| 1429 | 1457 |
|
| 1430 | 1458 |
Snapshot& snapshot; |
| 1431 | 1459 |
}; |
| 1432 | 1460 |
|
| 1433 | 1461 |
ListGraph *graph; |
| 1434 | 1462 |
|
| 1435 | 1463 |
NodeObserverProxy node_observer_proxy; |
| 1436 | 1464 |
EdgeObserverProxy edge_observer_proxy; |
| 1437 | 1465 |
|
| 1438 | 1466 |
std::list<Node> added_nodes; |
| 1439 | 1467 |
std::list<Edge> added_edges; |
| 1440 | 1468 |
|
| 1441 | 1469 |
|
| 1442 | 1470 |
void addNode(const Node& node) {
|
| 1443 | 1471 |
added_nodes.push_front(node); |
| 1444 | 1472 |
} |
| 1445 | 1473 |
void eraseNode(const Node& node) {
|
| 1446 | 1474 |
std::list<Node>::iterator it = |
| 1447 | 1475 |
std::find(added_nodes.begin(), added_nodes.end(), node); |
| 1448 | 1476 |
if (it == added_nodes.end()) {
|
| 1449 | 1477 |
clear(); |
| 1450 | 1478 |
edge_observer_proxy.detach(); |
| 1451 | 1479 |
throw NodeNotifier::ImmediateDetach(); |
| 1452 | 1480 |
} else {
|
| 1453 | 1481 |
added_nodes.erase(it); |
| 1454 | 1482 |
} |
| 1455 | 1483 |
} |
| 1456 | 1484 |
|
| 1457 | 1485 |
void addEdge(const Edge& edge) {
|
| 1458 | 1486 |
added_edges.push_front(edge); |
| 1459 | 1487 |
} |
| 1460 | 1488 |
void eraseEdge(const Edge& edge) {
|
| 1461 | 1489 |
std::list<Edge>::iterator it = |
| 1462 | 1490 |
std::find(added_edges.begin(), added_edges.end(), edge); |
| 1463 | 1491 |
if (it == added_edges.end()) {
|
| 1464 | 1492 |
clear(); |
| 1465 | 1493 |
node_observer_proxy.detach(); |
| 1466 | 1494 |
throw EdgeNotifier::ImmediateDetach(); |
| 1467 | 1495 |
} else {
|
| 1468 | 1496 |
added_edges.erase(it); |
| 1469 | 1497 |
} |
| 1470 | 1498 |
} |
| 1471 | 1499 |
|
| 1472 | 1500 |
void attach(ListGraph &_graph) {
|
| 1473 | 1501 |
graph = &_graph; |
| 1474 | 1502 |
node_observer_proxy.attach(graph->notifier(Node())); |
| 1475 | 1503 |
edge_observer_proxy.attach(graph->notifier(Edge())); |
| 1476 | 1504 |
} |
| 1477 | 1505 |
|
| 1478 | 1506 |
void detach() {
|
| 1479 | 1507 |
node_observer_proxy.detach(); |
| 1480 | 1508 |
edge_observer_proxy.detach(); |
| 1481 | 1509 |
} |
| 1482 | 1510 |
|
| 1483 | 1511 |
bool attached() const {
|
| 1484 | 1512 |
return node_observer_proxy.attached(); |
| 1485 | 1513 |
} |
| 1486 | 1514 |
|
| 1487 | 1515 |
void clear() {
|
| 1488 | 1516 |
added_nodes.clear(); |
| 1489 | 1517 |
added_edges.clear(); |
| 1490 | 1518 |
} |
| 1491 | 1519 |
|
| 1492 | 1520 |
public: |
| 1493 | 1521 |
|
| 1494 | 1522 |
/// \brief Default constructor. |
| 1495 | 1523 |
/// |
| 1496 | 1524 |
/// Default constructor. |
| 1497 |
/// |
|
| 1525 |
/// You have to call save() to actually make a snapshot. |
|
| 1498 | 1526 |
Snapshot() |
| 1499 | 1527 |
: graph(0), node_observer_proxy(*this), |
| 1500 | 1528 |
edge_observer_proxy(*this) {}
|
| 1501 | 1529 |
|
| 1502 | 1530 |
/// \brief Constructor that immediately makes a snapshot. |
| 1503 | 1531 |
/// |
| 1504 |
/// This constructor immediately makes a snapshot of the graph. |
|
| 1505 |
/// \param _graph The graph we make a snapshot of. |
|
| 1506 |
|
|
| 1532 |
/// This constructor immediately makes a snapshot of the given graph. |
|
| 1533 |
Snapshot(ListGraph &gr) |
|
| 1507 | 1534 |
: node_observer_proxy(*this), |
| 1508 | 1535 |
edge_observer_proxy(*this) {
|
| 1509 |
attach( |
|
| 1536 |
attach(gr); |
|
| 1510 | 1537 |
} |
| 1511 | 1538 |
|
| 1512 | 1539 |
/// \brief Make a snapshot. |
| 1513 | 1540 |
/// |
| 1514 |
/// Make a snapshot of the graph. |
|
| 1515 |
/// |
|
| 1516 |
/// This function |
|
| 1541 |
/// This function makes a snapshot of the given graph. |
|
| 1542 |
/// It can be called more than once. In case of a repeated |
|
| 1517 | 1543 |
/// call, the previous snapshot gets lost. |
| 1518 |
/// \param _graph The graph we make the snapshot of. |
|
| 1519 |
void save(ListGraph &_graph) {
|
|
| 1544 |
void save(ListGraph &gr) {
|
|
| 1520 | 1545 |
if (attached()) {
|
| 1521 | 1546 |
detach(); |
| 1522 | 1547 |
clear(); |
| 1523 | 1548 |
} |
| 1524 |
attach( |
|
| 1549 |
attach(gr); |
|
| 1525 | 1550 |
} |
| 1526 | 1551 |
|
| 1527 | 1552 |
/// \brief Undo the changes until the last snapshot. |
| 1528 |
// |
|
| 1529 |
/// Undo the changes until the last snapshot created by save(). |
|
| 1553 |
/// |
|
| 1554 |
/// This function undos the changes until the last snapshot |
|
| 1555 |
/// created by save() or Snapshot(ListGraph&). |
|
| 1556 |
/// |
|
| 1557 |
/// \warning This method invalidates the snapshot, i.e. repeated |
|
| 1558 |
/// restoring is not supported unless you call save() again. |
|
| 1530 | 1559 |
void restore() {
|
| 1531 | 1560 |
detach(); |
| 1532 | 1561 |
for(std::list<Edge>::iterator it = added_edges.begin(); |
| 1533 | 1562 |
it != added_edges.end(); ++it) {
|
| 1534 | 1563 |
graph->erase(*it); |
| 1535 | 1564 |
} |
| 1536 | 1565 |
for(std::list<Node>::iterator it = added_nodes.begin(); |
| 1537 | 1566 |
it != added_nodes.end(); ++it) {
|
| 1538 | 1567 |
graph->erase(*it); |
| 1539 | 1568 |
} |
| 1540 | 1569 |
clear(); |
| 1541 | 1570 |
} |
| 1542 | 1571 |
|
| 1543 |
/// \brief |
|
| 1572 |
/// \brief Returns \c true if the snapshot is valid. |
|
| 1544 | 1573 |
/// |
| 1545 |
/// |
|
| 1574 |
/// This function returns \c true if the snapshot is valid. |
|
| 1546 | 1575 |
bool valid() const {
|
| 1547 | 1576 |
return attached(); |
| 1548 | 1577 |
} |
| 1549 | 1578 |
}; |
| 1550 | 1579 |
}; |
| 1551 | 1580 |
|
| 1552 | 1581 |
/// @} |
| 1553 | 1582 |
} //namespace lemon |
| 1554 | 1583 |
|
| 1555 | 1584 |
|
| 1556 | 1585 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2008 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_LP_H |
| 20 | 20 |
#define LEMON_LP_H |
| 21 | 21 |
|
| 22 | 22 |
#include<lemon/config.h> |
| 23 | 23 |
|
| 24 | 24 |
|
| 25 |
#ifdef |
|
| 25 |
#ifdef LEMON_HAVE_GLPK |
|
| 26 | 26 |
#include <lemon/glpk.h> |
| 27 |
#elif |
|
| 27 |
#elif LEMON_HAVE_CPLEX |
|
| 28 | 28 |
#include <lemon/cplex.h> |
| 29 |
#elif |
|
| 29 |
#elif LEMON_HAVE_SOPLEX |
|
| 30 | 30 |
#include <lemon/soplex.h> |
| 31 |
#elif |
|
| 31 |
#elif LEMON_HAVE_CLP |
|
| 32 | 32 |
#include <lemon/clp.h> |
| 33 | 33 |
#endif |
| 34 | 34 |
|
| 35 | 35 |
///\file |
| 36 | 36 |
///\brief Defines a default LP solver |
| 37 | 37 |
///\ingroup lp_group |
| 38 | 38 |
namespace lemon {
|
| 39 | 39 |
|
| 40 | 40 |
#ifdef DOXYGEN |
| 41 | 41 |
///The default LP solver identifier |
| 42 | 42 |
|
| 43 | 43 |
///The default LP solver identifier. |
| 44 | 44 |
///\ingroup lp_group |
| 45 | 45 |
/// |
| 46 | 46 |
///Currently, the possible values are \c GLPK, \c CPLEX, |
| 47 | 47 |
///\c SOPLEX or \c CLP |
| 48 | 48 |
#define LEMON_DEFAULT_LP SOLVER |
| 49 | 49 |
///The default LP solver |
| 50 | 50 |
|
| 51 | 51 |
///The default LP solver. |
| 52 | 52 |
///\ingroup lp_group |
| 53 | 53 |
/// |
| 54 | 54 |
///Currently, it is either \c GlpkLp, \c CplexLp, \c SoplexLp or \c ClpLp |
| 55 | 55 |
typedef GlpkLp Lp; |
| 56 | 56 |
|
| 57 | 57 |
///The default MIP solver identifier |
| 58 | 58 |
|
| 59 | 59 |
///The default MIP solver identifier. |
| 60 | 60 |
///\ingroup lp_group |
| 61 | 61 |
/// |
| 62 | 62 |
///Currently, the possible values are \c GLPK or \c CPLEX |
| 63 | 63 |
#define LEMON_DEFAULT_MIP SOLVER |
| 64 | 64 |
///The default MIP solver. |
| 65 | 65 |
|
| 66 | 66 |
///The default MIP solver. |
| 67 | 67 |
///\ingroup lp_group |
| 68 | 68 |
/// |
| 69 | 69 |
///Currently, it is either \c GlpkMip or \c CplexMip |
| 70 | 70 |
typedef GlpkMip Mip; |
| 71 | 71 |
#else |
| 72 |
#ifdef |
|
| 72 |
#ifdef LEMON_HAVE_GLPK |
|
| 73 | 73 |
# define LEMON_DEFAULT_LP GLPK |
| 74 | 74 |
typedef GlpkLp Lp; |
| 75 | 75 |
# define LEMON_DEFAULT_MIP GLPK |
| 76 | 76 |
typedef GlpkMip Mip; |
| 77 |
#elif |
|
| 77 |
#elif LEMON_HAVE_CPLEX |
|
| 78 | 78 |
# define LEMON_DEFAULT_LP CPLEX |
| 79 | 79 |
typedef CplexLp Lp; |
| 80 | 80 |
# define LEMON_DEFAULT_MIP CPLEX |
| 81 | 81 |
typedef CplexMip Mip; |
| 82 |
#elif |
|
| 82 |
#elif LEMON_HAVE_SOPLEX |
|
| 83 | 83 |
# define DEFAULT_LP SOPLEX |
| 84 | 84 |
typedef SoplexLp Lp; |
| 85 |
#elif |
|
| 85 |
#elif LEMON_HAVE_CLP |
|
| 86 | 86 |
# define DEFAULT_LP CLP |
| 87 | 87 |
typedef ClpLp Lp; |
| 88 | 88 |
#endif |
| 89 | 89 |
#endif |
| 90 | 90 |
|
| 91 | 91 |
} //namespace lemon |
| 92 | 92 |
|
| 93 | 93 |
#endif //LEMON_LP_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2008 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
///\file |
| 20 | 20 |
///\brief The implementation of the LP solver interface. |
| 21 | 21 |
|
| 22 | 22 |
#include <lemon/lp_base.h> |
| 23 | 23 |
namespace lemon {
|
| 24 | 24 |
|
| 25 |
const LpBase::Value LpBase::INF = std::numeric_limits<Value>::infinity(); |
|
| 26 |
const LpBase::Value LpBase::NaN = std::numeric_limits<Value>::quiet_NaN(); |
|
| 25 |
const LpBase::Value LpBase::INF = |
|
| 26 |
std::numeric_limits<LpBase::Value>::infinity(); |
|
| 27 |
const LpBase::Value LpBase::NaN = |
|
| 28 |
std::numeric_limits<LpBase::Value>::quiet_NaN(); |
|
| 27 | 29 |
|
| 28 | 30 |
} //namespace lemon |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2008 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_LP_BASE_H |
| 20 | 20 |
#define LEMON_LP_BASE_H |
| 21 | 21 |
|
| 22 | 22 |
#include<iostream> |
| 23 | 23 |
#include<vector> |
| 24 | 24 |
#include<map> |
| 25 | 25 |
#include<limits> |
| 26 | 26 |
#include<lemon/math.h> |
| 27 | 27 |
|
| 28 | 28 |
#include<lemon/error.h> |
| 29 | 29 |
#include<lemon/assert.h> |
| 30 | 30 |
|
| 31 | 31 |
#include<lemon/core.h> |
| 32 | 32 |
#include<lemon/bits/solver_bits.h> |
| 33 | 33 |
|
| 34 | 34 |
///\file |
| 35 | 35 |
///\brief The interface of the LP solver interface. |
| 36 | 36 |
///\ingroup lp_group |
| 37 | 37 |
namespace lemon {
|
| 38 | 38 |
|
| 39 | 39 |
///Common base class for LP and MIP solvers |
| 40 | 40 |
|
| 41 | 41 |
///Usually this class is not used directly, please use one of the concrete |
| 42 | 42 |
///implementations of the solver interface. |
| 43 | 43 |
///\ingroup lp_group |
| 44 | 44 |
class LpBase {
|
| 45 | 45 |
|
| 46 | 46 |
protected: |
| 47 | 47 |
|
| 48 | 48 |
_solver_bits::VarIndex rows; |
| 49 | 49 |
_solver_bits::VarIndex cols; |
| 50 | 50 |
|
| 51 | 51 |
public: |
| 52 | 52 |
|
| 53 | 53 |
///Possible outcomes of an LP solving procedure |
| 54 | 54 |
enum SolveExitStatus {
|
| 55 |
/// |
|
| 55 |
/// = 0. It means that the problem has been successfully solved: either |
|
| 56 | 56 |
///an optimal solution has been found or infeasibility/unboundedness |
| 57 | 57 |
///has been proved. |
| 58 | 58 |
SOLVED = 0, |
| 59 |
///Any other case (including the case when some user specified |
|
| 60 |
///limit has been exceeded) |
|
| 59 |
/// = 1. Any other case (including the case when some user specified |
|
| 60 |
///limit has been exceeded). |
|
| 61 | 61 |
UNSOLVED = 1 |
| 62 | 62 |
}; |
| 63 | 63 |
|
| 64 | 64 |
///Direction of the optimization |
| 65 | 65 |
enum Sense {
|
| 66 | 66 |
/// Minimization |
| 67 | 67 |
MIN, |
| 68 | 68 |
/// Maximization |
| 69 | 69 |
MAX |
| 70 | 70 |
}; |
| 71 | 71 |
|
| 72 |
///Enum for \c messageLevel() parameter |
|
| 73 |
enum MessageLevel {
|
|
| 74 |
/// No output (default value). |
|
| 75 |
MESSAGE_NOTHING, |
|
| 76 |
/// Error messages only. |
|
| 77 |
MESSAGE_ERROR, |
|
| 78 |
/// Warnings. |
|
| 79 |
MESSAGE_WARNING, |
|
| 80 |
/// Normal output. |
|
| 81 |
MESSAGE_NORMAL, |
|
| 82 |
/// Verbose output. |
|
| 83 |
MESSAGE_VERBOSE |
|
| 84 |
}; |
|
| 85 |
|
|
| 86 |
|
|
| 72 | 87 |
///The floating point type used by the solver |
| 73 | 88 |
typedef double Value; |
| 74 | 89 |
///The infinity constant |
| 75 | 90 |
static const Value INF; |
| 76 | 91 |
///The not a number constant |
| 77 | 92 |
static const Value NaN; |
| 78 | 93 |
|
| 79 | 94 |
friend class Col; |
| 80 | 95 |
friend class ColIt; |
| 81 | 96 |
friend class Row; |
| 82 | 97 |
friend class RowIt; |
| 83 | 98 |
|
| 84 | 99 |
///Refer to a column of the LP. |
| 85 | 100 |
|
| 86 | 101 |
///This type is used to refer to a column of the LP. |
| 87 | 102 |
/// |
| 88 | 103 |
///Its value remains valid and correct even after the addition or erase of |
| 89 | 104 |
///other columns. |
| 90 | 105 |
/// |
| 91 | 106 |
///\note This class is similar to other Item types in LEMON, like |
| 92 | 107 |
///Node and Arc types in digraph. |
| 93 | 108 |
class Col {
|
| 94 | 109 |
friend class LpBase; |
| 95 | 110 |
protected: |
| 96 | 111 |
int _id; |
| 97 | 112 |
explicit Col(int id) : _id(id) {}
|
| 98 | 113 |
public: |
| 99 | 114 |
typedef Value ExprValue; |
| 100 | 115 |
typedef True LpCol; |
| 101 | 116 |
/// Default constructor |
| 102 | 117 |
|
| 103 | 118 |
/// \warning The default constructor sets the Col to an |
| 104 | 119 |
/// undefined value. |
| 105 | 120 |
Col() {}
|
| 106 | 121 |
/// Invalid constructor \& conversion. |
| 107 | 122 |
|
| 108 | 123 |
/// This constructor initializes the Col to be invalid. |
| 109 | 124 |
/// \sa Invalid for more details. |
| 110 | 125 |
Col(const Invalid&) : _id(-1) {}
|
| 111 | 126 |
/// Equality operator |
| 112 | 127 |
|
| 113 | 128 |
/// Two \ref Col "Col"s are equal if and only if they point to |
| 114 | 129 |
/// the same LP column or both are invalid. |
| 115 | 130 |
bool operator==(Col c) const {return _id == c._id;}
|
| 116 | 131 |
/// Inequality operator |
| 117 | 132 |
|
| 118 | 133 |
/// \sa operator==(Col c) |
| 119 | 134 |
/// |
| 120 | 135 |
bool operator!=(Col c) const {return _id != c._id;}
|
| 121 | 136 |
/// Artificial ordering operator. |
| 122 | 137 |
|
| 123 | 138 |
/// To allow the use of this object in std::map or similar |
| 124 | 139 |
/// associative container we require this. |
| 125 | 140 |
/// |
| 126 | 141 |
/// \note This operator only have to define some strict ordering of |
| 127 | 142 |
/// the items; this order has nothing to do with the iteration |
| 128 | 143 |
/// ordering of the items. |
| 129 | 144 |
bool operator<(Col c) const {return _id < c._id;}
|
| 130 | 145 |
}; |
| 131 | 146 |
|
| 132 | 147 |
///Iterator for iterate over the columns of an LP problem |
| 133 | 148 |
|
| 134 | 149 |
/// Its usage is quite simple, for example you can count the number |
| 135 | 150 |
/// of columns in an LP \c lp: |
| 136 | 151 |
///\code |
| 137 | 152 |
/// int count=0; |
| 138 | 153 |
/// for (LpBase::ColIt c(lp); c!=INVALID; ++c) ++count; |
| 139 | 154 |
///\endcode |
| 140 | 155 |
class ColIt : public Col {
|
| 141 | 156 |
const LpBase *_solver; |
| 142 | 157 |
public: |
| 143 | 158 |
/// Default constructor |
| 144 | 159 |
|
| 145 | 160 |
/// \warning The default constructor sets the iterator |
| 146 | 161 |
/// to an undefined value. |
| 147 | 162 |
ColIt() {}
|
| 148 | 163 |
/// Sets the iterator to the first Col |
| 149 | 164 |
|
| 150 | 165 |
/// Sets the iterator to the first Col. |
| 151 | 166 |
/// |
| 152 | 167 |
ColIt(const LpBase &solver) : _solver(&solver) |
| 153 | 168 |
{
|
| 154 | 169 |
_solver->cols.firstItem(_id); |
| 155 | 170 |
} |
| 156 | 171 |
/// Invalid constructor \& conversion |
| 157 | 172 |
|
| 158 | 173 |
/// Initialize the iterator to be invalid. |
| 159 | 174 |
/// \sa Invalid for more details. |
| 160 | 175 |
ColIt(const Invalid&) : Col(INVALID) {}
|
| 161 | 176 |
/// Next column |
| 162 | 177 |
|
| 163 | 178 |
/// Assign the iterator to the next column. |
| 164 | 179 |
/// |
| 165 | 180 |
ColIt &operator++() |
| 166 | 181 |
{
|
| 167 | 182 |
_solver->cols.nextItem(_id); |
| 168 | 183 |
return *this; |
| 169 | 184 |
} |
| 170 | 185 |
}; |
| 171 | 186 |
|
| 172 | 187 |
/// \brief Returns the ID of the column. |
| 173 | 188 |
static int id(const Col& col) { return col._id; }
|
| 174 | 189 |
/// \brief Returns the column with the given ID. |
| 175 | 190 |
/// |
| 176 | 191 |
/// \pre The argument should be a valid column ID in the LP problem. |
| 177 | 192 |
static Col colFromId(int id) { return Col(id); }
|
| 178 | 193 |
|
| 179 | 194 |
///Refer to a row of the LP. |
| 180 | 195 |
|
| 181 | 196 |
///This type is used to refer to a row of the LP. |
| 182 | 197 |
/// |
| 183 | 198 |
///Its value remains valid and correct even after the addition or erase of |
| 184 | 199 |
///other rows. |
| 185 | 200 |
/// |
| 186 | 201 |
///\note This class is similar to other Item types in LEMON, like |
| 187 | 202 |
///Node and Arc types in digraph. |
| 188 | 203 |
class Row {
|
| 189 | 204 |
friend class LpBase; |
| 190 | 205 |
protected: |
| 191 | 206 |
int _id; |
| 192 | 207 |
explicit Row(int id) : _id(id) {}
|
| 193 | 208 |
public: |
| 194 | 209 |
typedef Value ExprValue; |
| 195 | 210 |
typedef True LpRow; |
| 196 | 211 |
/// Default constructor |
| 197 | 212 |
|
| 198 | 213 |
/// \warning The default constructor sets the Row to an |
| 199 | 214 |
/// undefined value. |
| 200 | 215 |
Row() {}
|
| 201 | 216 |
/// Invalid constructor \& conversion. |
| 202 | 217 |
|
| 203 | 218 |
/// This constructor initializes the Row to be invalid. |
| 204 | 219 |
/// \sa Invalid for more details. |
| 205 | 220 |
Row(const Invalid&) : _id(-1) {}
|
| 206 | 221 |
/// Equality operator |
| 207 | 222 |
|
| 208 | 223 |
/// Two \ref Row "Row"s are equal if and only if they point to |
| 209 | 224 |
/// the same LP row or both are invalid. |
| 210 | 225 |
bool operator==(Row r) const {return _id == r._id;}
|
| 211 | 226 |
/// Inequality operator |
| 212 | 227 |
|
| 213 | 228 |
/// \sa operator==(Row r) |
| 214 | 229 |
/// |
| 215 | 230 |
bool operator!=(Row r) const {return _id != r._id;}
|
| 216 | 231 |
/// Artificial ordering operator. |
| 217 | 232 |
|
| 218 | 233 |
/// To allow the use of this object in std::map or similar |
| 219 | 234 |
/// associative container we require this. |
| 220 | 235 |
/// |
| 221 | 236 |
/// \note This operator only have to define some strict ordering of |
| 222 | 237 |
/// the items; this order has nothing to do with the iteration |
| 223 | 238 |
/// ordering of the items. |
| 224 | 239 |
bool operator<(Row r) const {return _id < r._id;}
|
| 225 | 240 |
}; |
| 226 | 241 |
|
| 227 | 242 |
///Iterator for iterate over the rows of an LP problem |
| 228 | 243 |
|
| 229 | 244 |
/// Its usage is quite simple, for example you can count the number |
| 230 | 245 |
/// of rows in an LP \c lp: |
| 231 | 246 |
///\code |
| 232 | 247 |
/// int count=0; |
| 233 | 248 |
/// for (LpBase::RowIt c(lp); c!=INVALID; ++c) ++count; |
| 234 | 249 |
///\endcode |
| 235 | 250 |
class RowIt : public Row {
|
| 236 | 251 |
const LpBase *_solver; |
| 237 | 252 |
public: |
| 238 | 253 |
/// Default constructor |
| 239 | 254 |
|
| 240 | 255 |
/// \warning The default constructor sets the iterator |
| 241 | 256 |
/// to an undefined value. |
| 242 | 257 |
RowIt() {}
|
| 243 | 258 |
/// Sets the iterator to the first Row |
| 244 | 259 |
|
| 245 | 260 |
/// Sets the iterator to the first Row. |
| 246 | 261 |
/// |
| 247 | 262 |
RowIt(const LpBase &solver) : _solver(&solver) |
| 248 | 263 |
{
|
| 249 | 264 |
_solver->rows.firstItem(_id); |
| 250 | 265 |
} |
| 251 | 266 |
/// Invalid constructor \& conversion |
| 252 | 267 |
|
| 253 | 268 |
/// Initialize the iterator to be invalid. |
| 254 | 269 |
/// \sa Invalid for more details. |
| 255 | 270 |
RowIt(const Invalid&) : Row(INVALID) {}
|
| 256 | 271 |
/// Next row |
| 257 | 272 |
|
| 258 | 273 |
/// Assign the iterator to the next row. |
| 259 | 274 |
/// |
| 260 | 275 |
RowIt &operator++() |
| 261 | 276 |
{
|
| 262 | 277 |
_solver->rows.nextItem(_id); |
| 263 | 278 |
return *this; |
| 264 | 279 |
} |
| 265 | 280 |
}; |
| 266 | 281 |
|
| 267 | 282 |
/// \brief Returns the ID of the row. |
| 268 | 283 |
static int id(const Row& row) { return row._id; }
|
| 269 | 284 |
/// \brief Returns the row with the given ID. |
| 270 | 285 |
/// |
| 271 | 286 |
/// \pre The argument should be a valid row ID in the LP problem. |
| 272 | 287 |
static Row rowFromId(int id) { return Row(id); }
|
| 273 | 288 |
|
| 274 | 289 |
public: |
| 275 | 290 |
|
| 276 | 291 |
///Linear expression of variables and a constant component |
| 277 | 292 |
|
| 278 | 293 |
///This data structure stores a linear expression of the variables |
| 279 | 294 |
///(\ref Col "Col"s) and also has a constant component. |
| 280 | 295 |
/// |
| 281 | 296 |
///There are several ways to access and modify the contents of this |
| 282 | 297 |
///container. |
| 283 | 298 |
///\code |
| 284 | 299 |
///e[v]=5; |
| 285 | 300 |
///e[v]+=12; |
| 286 | 301 |
///e.erase(v); |
| 287 | 302 |
///\endcode |
| 288 | 303 |
///or you can also iterate through its elements. |
| 289 | 304 |
///\code |
| 290 | 305 |
///double s=0; |
| 291 | 306 |
///for(LpBase::Expr::ConstCoeffIt i(e);i!=INVALID;++i) |
| 292 | 307 |
/// s+=*i * primal(i); |
| 293 | 308 |
///\endcode |
| 294 | 309 |
///(This code computes the primal value of the expression). |
| 295 | 310 |
///- Numbers (<tt>double</tt>'s) |
| 296 | 311 |
///and variables (\ref Col "Col"s) directly convert to an |
| 297 | 312 |
///\ref Expr and the usual linear operations are defined, so |
| 298 | 313 |
///\code |
| 299 | 314 |
///v+w |
| 300 | 315 |
///2*v-3.12*(v-w/2)+2 |
| 301 | 316 |
///v*2.1+(3*v+(v*12+w+6)*3)/2 |
| 302 | 317 |
///\endcode |
| 303 | 318 |
///are valid expressions. |
| 304 | 319 |
///The usual assignment operations are also defined. |
| 305 | 320 |
///\code |
| 306 | 321 |
///e=v+w; |
| 307 | 322 |
///e+=2*v-3.12*(v-w/2)+2; |
| 308 | 323 |
///e*=3.4; |
| 309 | 324 |
///e/=5; |
| 310 | 325 |
///\endcode |
| 311 | 326 |
///- The constant member can be set and read by dereference |
| 312 | 327 |
/// operator (unary *) |
| 313 | 328 |
/// |
| 314 | 329 |
///\code |
| 315 | 330 |
///*e=12; |
| 316 | 331 |
///double c=*e; |
| 317 | 332 |
///\endcode |
| 318 | 333 |
/// |
| 319 | 334 |
///\sa Constr |
| 320 | 335 |
class Expr {
|
| 321 | 336 |
friend class LpBase; |
| 322 | 337 |
public: |
| 323 | 338 |
/// The key type of the expression |
| 324 | 339 |
typedef LpBase::Col Key; |
| 325 | 340 |
/// The value type of the expression |
| 326 | 341 |
typedef LpBase::Value Value; |
| 327 | 342 |
|
| 328 | 343 |
protected: |
| 329 | 344 |
Value const_comp; |
| 330 | 345 |
std::map<int, Value> comps; |
| 331 | 346 |
|
| 332 | 347 |
public: |
| 333 | 348 |
typedef True SolverExpr; |
| 334 | 349 |
/// Default constructor |
| 335 | 350 |
|
| 336 | 351 |
/// Construct an empty expression, the coefficients and |
| 337 | 352 |
/// the constant component are initialized to zero. |
| 338 | 353 |
Expr() : const_comp(0) {}
|
| 339 | 354 |
/// Construct an expression from a column |
| 340 | 355 |
|
| 341 | 356 |
/// Construct an expression, which has a term with \c c variable |
| 342 | 357 |
/// and 1.0 coefficient. |
| 343 | 358 |
Expr(const Col &c) : const_comp(0) {
|
| 344 | 359 |
typedef std::map<int, Value>::value_type pair_type; |
| 345 | 360 |
comps.insert(pair_type(id(c), 1)); |
| 346 | 361 |
} |
| 347 | 362 |
/// Construct an expression from a constant |
| 348 | 363 |
|
| 349 | 364 |
/// Construct an expression, which's constant component is \c v. |
| 350 | 365 |
/// |
| 351 | 366 |
Expr(const Value &v) : const_comp(v) {}
|
| 352 | 367 |
/// Returns the coefficient of the column |
| 353 | 368 |
Value operator[](const Col& c) const {
|
| 354 | 369 |
std::map<int, Value>::const_iterator it=comps.find(id(c)); |
| 355 | 370 |
if (it != comps.end()) {
|
| 356 | 371 |
return it->second; |
| 357 | 372 |
} else {
|
| 358 | 373 |
return 0; |
| 359 | 374 |
} |
| 360 | 375 |
} |
| 361 | 376 |
/// Returns the coefficient of the column |
| 362 | 377 |
Value& operator[](const Col& c) {
|
| 363 | 378 |
return comps[id(c)]; |
| 364 | 379 |
} |
| 365 | 380 |
/// Sets the coefficient of the column |
| 366 | 381 |
void set(const Col &c, const Value &v) {
|
| 367 | 382 |
if (v != 0.0) {
|
| 368 | 383 |
typedef std::map<int, Value>::value_type pair_type; |
| 369 | 384 |
comps.insert(pair_type(id(c), v)); |
| 370 | 385 |
} else {
|
| 371 | 386 |
comps.erase(id(c)); |
| 372 | 387 |
} |
| 373 | 388 |
} |
| 374 | 389 |
/// Returns the constant component of the expression |
| 375 | 390 |
Value& operator*() { return const_comp; }
|
| 376 | 391 |
/// Returns the constant component of the expression |
| 377 | 392 |
const Value& operator*() const { return const_comp; }
|
| 378 | 393 |
/// \brief Removes the coefficients which's absolute value does |
| 379 | 394 |
/// not exceed \c epsilon. It also sets to zero the constant |
| 380 | 395 |
/// component, if it does not exceed epsilon in absolute value. |
| 381 | 396 |
void simplify(Value epsilon = 0.0) {
|
| 382 | 397 |
std::map<int, Value>::iterator it=comps.begin(); |
| 383 | 398 |
while (it != comps.end()) {
|
| 384 | 399 |
std::map<int, Value>::iterator jt=it; |
| 385 | 400 |
++jt; |
| 386 | 401 |
if (std::fabs((*it).second) <= epsilon) comps.erase(it); |
| 387 | 402 |
it=jt; |
| 388 | 403 |
} |
| 389 | 404 |
if (std::fabs(const_comp) <= epsilon) const_comp = 0; |
| 390 | 405 |
} |
| 391 | 406 |
|
| 392 | 407 |
void simplify(Value epsilon = 0.0) const {
|
| 393 | 408 |
const_cast<Expr*>(this)->simplify(epsilon); |
| 394 | 409 |
} |
| 395 | 410 |
|
| 396 | 411 |
///Sets all coefficients and the constant component to 0. |
| 397 | 412 |
void clear() {
|
| 398 | 413 |
comps.clear(); |
| 399 | 414 |
const_comp=0; |
| 400 | 415 |
} |
| 401 | 416 |
|
| 402 | 417 |
///Compound assignment |
| 403 | 418 |
Expr &operator+=(const Expr &e) {
|
| 404 | 419 |
for (std::map<int, Value>::const_iterator it=e.comps.begin(); |
| 405 | 420 |
it!=e.comps.end(); ++it) |
| 406 | 421 |
comps[it->first]+=it->second; |
| 407 | 422 |
const_comp+=e.const_comp; |
| 408 | 423 |
return *this; |
| 409 | 424 |
} |
| 410 | 425 |
///Compound assignment |
| 411 | 426 |
Expr &operator-=(const Expr &e) {
|
| 412 | 427 |
for (std::map<int, Value>::const_iterator it=e.comps.begin(); |
| 413 | 428 |
it!=e.comps.end(); ++it) |
| 414 | 429 |
comps[it->first]-=it->second; |
| 415 | 430 |
const_comp-=e.const_comp; |
| 416 | 431 |
return *this; |
| 417 | 432 |
} |
| 418 | 433 |
///Multiply with a constant |
| 419 | 434 |
Expr &operator*=(const Value &v) {
|
| 420 | 435 |
for (std::map<int, Value>::iterator it=comps.begin(); |
| 421 | 436 |
it!=comps.end(); ++it) |
| 422 | 437 |
it->second*=v; |
| 423 | 438 |
const_comp*=v; |
| 424 | 439 |
return *this; |
| 425 | 440 |
} |
| 426 | 441 |
///Division with a constant |
| 427 | 442 |
Expr &operator/=(const Value &c) {
|
| 428 | 443 |
for (std::map<int, Value>::iterator it=comps.begin(); |
| 429 | 444 |
it!=comps.end(); ++it) |
| 430 | 445 |
it->second/=c; |
| 431 | 446 |
const_comp/=c; |
| 432 | 447 |
return *this; |
| 433 | 448 |
} |
| 434 | 449 |
|
| 435 | 450 |
///Iterator over the expression |
| 436 | 451 |
|
| 437 | 452 |
///The iterator iterates over the terms of the expression. |
| 438 | 453 |
/// |
| 439 | 454 |
///\code |
| 440 | 455 |
///double s=0; |
| 441 | 456 |
///for(LpBase::Expr::CoeffIt i(e);i!=INVALID;++i) |
| 442 | 457 |
/// s+= *i * primal(i); |
| 443 | 458 |
///\endcode |
| 444 | 459 |
class CoeffIt {
|
| 445 | 460 |
private: |
| 446 | 461 |
|
| 447 | 462 |
std::map<int, Value>::iterator _it, _end; |
| 448 | 463 |
|
| 449 | 464 |
public: |
| 450 | 465 |
|
| 451 | 466 |
/// Sets the iterator to the first term |
| 452 | 467 |
|
| 453 | 468 |
/// Sets the iterator to the first term of the expression. |
| 454 | 469 |
/// |
| 455 | 470 |
CoeffIt(Expr& e) |
| 456 | 471 |
: _it(e.comps.begin()), _end(e.comps.end()){}
|
| 457 | 472 |
|
| 458 | 473 |
/// Convert the iterator to the column of the term |
| 459 | 474 |
operator Col() const {
|
| 460 | 475 |
return colFromId(_it->first); |
| 461 | 476 |
} |
| 462 | 477 |
|
| 463 | 478 |
/// Returns the coefficient of the term |
| 464 | 479 |
Value& operator*() { return _it->second; }
|
| 465 | 480 |
|
| 466 | 481 |
/// Returns the coefficient of the term |
| 467 | 482 |
const Value& operator*() const { return _it->second; }
|
| 468 | 483 |
/// Next term |
| 469 | 484 |
|
| 470 | 485 |
/// Assign the iterator to the next term. |
| 471 | 486 |
/// |
| 472 | 487 |
CoeffIt& operator++() { ++_it; return *this; }
|
| 473 | 488 |
|
| 474 | 489 |
/// Equality operator |
| 475 | 490 |
bool operator==(Invalid) const { return _it == _end; }
|
| 476 | 491 |
/// Inequality operator |
| 477 | 492 |
bool operator!=(Invalid) const { return _it != _end; }
|
| 478 | 493 |
}; |
| 479 | 494 |
|
| 480 | 495 |
/// Const iterator over the expression |
| 481 | 496 |
|
| 482 | 497 |
///The iterator iterates over the terms of the expression. |
| 483 | 498 |
/// |
| 484 | 499 |
///\code |
| 485 | 500 |
///double s=0; |
| 486 | 501 |
///for(LpBase::Expr::ConstCoeffIt i(e);i!=INVALID;++i) |
| 487 | 502 |
/// s+=*i * primal(i); |
| 488 | 503 |
///\endcode |
| 489 | 504 |
class ConstCoeffIt {
|
| 490 | 505 |
private: |
| 491 | 506 |
|
| 492 | 507 |
std::map<int, Value>::const_iterator _it, _end; |
| 493 | 508 |
|
| 494 | 509 |
public: |
| 495 | 510 |
|
| 496 | 511 |
/// Sets the iterator to the first term |
| 497 | 512 |
|
| 498 | 513 |
/// Sets the iterator to the first term of the expression. |
| 499 | 514 |
/// |
| 500 | 515 |
ConstCoeffIt(const Expr& e) |
| 501 | 516 |
: _it(e.comps.begin()), _end(e.comps.end()){}
|
| 502 | 517 |
|
| 503 | 518 |
/// Convert the iterator to the column of the term |
| 504 | 519 |
operator Col() const {
|
| 505 | 520 |
return colFromId(_it->first); |
| 506 | 521 |
} |
| 507 | 522 |
|
| 508 | 523 |
/// Returns the coefficient of the term |
| 509 | 524 |
const Value& operator*() const { return _it->second; }
|
| 510 | 525 |
|
| 511 | 526 |
/// Next term |
| 512 | 527 |
|
| 513 | 528 |
/// Assign the iterator to the next term. |
| 514 | 529 |
/// |
| 515 | 530 |
ConstCoeffIt& operator++() { ++_it; return *this; }
|
| 516 | 531 |
|
| 517 | 532 |
/// Equality operator |
| 518 | 533 |
bool operator==(Invalid) const { return _it == _end; }
|
| 519 | 534 |
/// Inequality operator |
| 520 | 535 |
bool operator!=(Invalid) const { return _it != _end; }
|
| 521 | 536 |
}; |
| 522 | 537 |
|
| 523 | 538 |
}; |
| 524 | 539 |
|
| 525 | 540 |
///Linear constraint |
| 526 | 541 |
|
| 527 | 542 |
///This data stucture represents a linear constraint in the LP. |
| 528 | 543 |
///Basically it is a linear expression with a lower or an upper bound |
| 529 | 544 |
///(or both). These parts of the constraint can be obtained by the member |
| 530 | 545 |
///functions \ref expr(), \ref lowerBound() and \ref upperBound(), |
| 531 | 546 |
///respectively. |
| 532 | 547 |
///There are two ways to construct a constraint. |
| 533 | 548 |
///- You can set the linear expression and the bounds directly |
| 534 | 549 |
/// by the functions above. |
| 535 | 550 |
///- The operators <tt>\<=</tt>, <tt>==</tt> and <tt>\>=</tt> |
| 536 | 551 |
/// are defined between expressions, or even between constraints whenever |
| 537 | 552 |
/// it makes sense. Therefore if \c e and \c f are linear expressions and |
| 538 | 553 |
/// \c s and \c t are numbers, then the followings are valid expressions |
| 539 | 554 |
/// and thus they can be used directly e.g. in \ref addRow() whenever |
| 540 | 555 |
/// it makes sense. |
| 541 | 556 |
///\code |
| 542 | 557 |
/// e<=s |
| 543 | 558 |
/// e<=f |
| 544 | 559 |
/// e==f |
| 545 | 560 |
/// s<=e<=t |
| 546 | 561 |
/// e>=t |
| 547 | 562 |
///\endcode |
| 548 | 563 |
///\warning The validity of a constraint is checked only at run |
| 549 | 564 |
///time, so e.g. \ref addRow(<tt>x[1]\<=x[2]<=5</tt>) will |
| 550 | 565 |
///compile, but will fail an assertion. |
| 551 | 566 |
class Constr |
| 552 | 567 |
{
|
| 553 | 568 |
public: |
| 554 | 569 |
typedef LpBase::Expr Expr; |
| 555 | 570 |
typedef Expr::Key Key; |
| 556 | 571 |
typedef Expr::Value Value; |
| 557 | 572 |
|
| 558 | 573 |
protected: |
| 559 | 574 |
Expr _expr; |
| 560 | 575 |
Value _lb,_ub; |
| 561 | 576 |
public: |
| 562 | 577 |
///\e |
| 563 | 578 |
Constr() : _expr(), _lb(NaN), _ub(NaN) {}
|
| 564 | 579 |
///\e |
| 565 | 580 |
Constr(Value lb, const Expr &e, Value ub) : |
| 566 | 581 |
_expr(e), _lb(lb), _ub(ub) {}
|
| 567 | 582 |
Constr(const Expr &e) : |
| 568 | 583 |
_expr(e), _lb(NaN), _ub(NaN) {}
|
| 569 | 584 |
///\e |
| 570 | 585 |
void clear() |
| 571 | 586 |
{
|
| 572 | 587 |
_expr.clear(); |
| 573 | 588 |
_lb=_ub=NaN; |
| 574 | 589 |
} |
| 575 | 590 |
|
| 576 | 591 |
///Reference to the linear expression |
| 577 | 592 |
Expr &expr() { return _expr; }
|
| 578 | 593 |
///Cont reference to the linear expression |
| 579 | 594 |
const Expr &expr() const { return _expr; }
|
| 580 | 595 |
///Reference to the lower bound. |
| 581 | 596 |
|
| 582 | 597 |
///\return |
| 583 | 598 |
///- \ref INF "INF": the constraint is lower unbounded. |
| 584 | 599 |
///- \ref NaN "NaN": lower bound has not been set. |
| 585 | 600 |
///- finite number: the lower bound |
| 586 | 601 |
Value &lowerBound() { return _lb; }
|
| 587 | 602 |
///The const version of \ref lowerBound() |
| 588 | 603 |
const Value &lowerBound() const { return _lb; }
|
| 589 | 604 |
///Reference to the upper bound. |
| 590 | 605 |
|
| 591 | 606 |
///\return |
| 592 | 607 |
///- \ref INF "INF": the constraint is upper unbounded. |
| 593 | 608 |
///- \ref NaN "NaN": upper bound has not been set. |
| 594 | 609 |
///- finite number: the upper bound |
| 595 | 610 |
Value &upperBound() { return _ub; }
|
| 596 | 611 |
///The const version of \ref upperBound() |
| 597 | 612 |
const Value &upperBound() const { return _ub; }
|
| 598 | 613 |
///Is the constraint lower bounded? |
| 599 | 614 |
bool lowerBounded() const {
|
| 600 |
return _lb != -INF && ! |
|
| 615 |
return _lb != -INF && !isNaN(_lb); |
|
| 601 | 616 |
} |
| 602 | 617 |
///Is the constraint upper bounded? |
| 603 | 618 |
bool upperBounded() const {
|
| 604 |
return _ub != INF && ! |
|
| 619 |
return _ub != INF && !isNaN(_ub); |
|
| 605 | 620 |
} |
| 606 | 621 |
|
| 607 | 622 |
}; |
| 608 | 623 |
|
| 609 | 624 |
///Linear expression of rows |
| 610 | 625 |
|
| 611 | 626 |
///This data structure represents a column of the matrix, |
| 612 | 627 |
///thas is it strores a linear expression of the dual variables |
| 613 | 628 |
///(\ref Row "Row"s). |
| 614 | 629 |
/// |
| 615 | 630 |
///There are several ways to access and modify the contents of this |
| 616 | 631 |
///container. |
| 617 | 632 |
///\code |
| 618 | 633 |
///e[v]=5; |
| 619 | 634 |
///e[v]+=12; |
| 620 | 635 |
///e.erase(v); |
| 621 | 636 |
///\endcode |
| 622 | 637 |
///or you can also iterate through its elements. |
| 623 | 638 |
///\code |
| 624 | 639 |
///double s=0; |
| 625 | 640 |
///for(LpBase::DualExpr::ConstCoeffIt i(e);i!=INVALID;++i) |
| 626 | 641 |
/// s+=*i; |
| 627 | 642 |
///\endcode |
| 628 | 643 |
///(This code computes the sum of all coefficients). |
| 629 | 644 |
///- Numbers (<tt>double</tt>'s) |
| 630 | 645 |
///and variables (\ref Row "Row"s) directly convert to an |
| 631 | 646 |
///\ref DualExpr and the usual linear operations are defined, so |
| 632 | 647 |
///\code |
| 633 | 648 |
///v+w |
| 634 | 649 |
///2*v-3.12*(v-w/2) |
| 635 | 650 |
///v*2.1+(3*v+(v*12+w)*3)/2 |
| 636 | 651 |
///\endcode |
| 637 | 652 |
///are valid \ref DualExpr dual expressions. |
| 638 | 653 |
///The usual assignment operations are also defined. |
| 639 | 654 |
///\code |
| 640 | 655 |
///e=v+w; |
| 641 | 656 |
///e+=2*v-3.12*(v-w/2); |
| 642 | 657 |
///e*=3.4; |
| 643 | 658 |
///e/=5; |
| 644 | 659 |
///\endcode |
| 645 | 660 |
/// |
| 646 | 661 |
///\sa Expr |
| 647 | 662 |
class DualExpr {
|
| 648 | 663 |
friend class LpBase; |
| 649 | 664 |
public: |
| 650 | 665 |
/// The key type of the expression |
| 651 | 666 |
typedef LpBase::Row Key; |
| 652 | 667 |
/// The value type of the expression |
| 653 | 668 |
typedef LpBase::Value Value; |
| 654 | 669 |
|
| 655 | 670 |
protected: |
| 656 | 671 |
std::map<int, Value> comps; |
| 657 | 672 |
|
| 658 | 673 |
public: |
| 659 | 674 |
typedef True SolverExpr; |
| 660 | 675 |
/// Default constructor |
| 661 | 676 |
|
| 662 | 677 |
/// Construct an empty expression, the coefficients are |
| 663 | 678 |
/// initialized to zero. |
| 664 | 679 |
DualExpr() {}
|
| 665 | 680 |
/// Construct an expression from a row |
| 666 | 681 |
|
| 667 | 682 |
/// Construct an expression, which has a term with \c r dual |
| 668 | 683 |
/// variable and 1.0 coefficient. |
| 669 | 684 |
DualExpr(const Row &r) {
|
| 670 | 685 |
typedef std::map<int, Value>::value_type pair_type; |
| 671 | 686 |
comps.insert(pair_type(id(r), 1)); |
| 672 | 687 |
} |
| 673 | 688 |
/// Returns the coefficient of the row |
| 674 | 689 |
Value operator[](const Row& r) const {
|
| 675 | 690 |
std::map<int, Value>::const_iterator it = comps.find(id(r)); |
| 676 | 691 |
if (it != comps.end()) {
|
| 677 | 692 |
return it->second; |
| 678 | 693 |
} else {
|
| 679 | 694 |
return 0; |
| 680 | 695 |
} |
| 681 | 696 |
} |
| 682 | 697 |
/// Returns the coefficient of the row |
| 683 | 698 |
Value& operator[](const Row& r) {
|
| 684 | 699 |
return comps[id(r)]; |
| 685 | 700 |
} |
| 686 | 701 |
/// Sets the coefficient of the row |
| 687 | 702 |
void set(const Row &r, const Value &v) {
|
| 688 | 703 |
if (v != 0.0) {
|
| 689 | 704 |
typedef std::map<int, Value>::value_type pair_type; |
| 690 | 705 |
comps.insert(pair_type(id(r), v)); |
| 691 | 706 |
} else {
|
| 692 | 707 |
comps.erase(id(r)); |
| 693 | 708 |
} |
| 694 | 709 |
} |
| 695 | 710 |
/// \brief Removes the coefficients which's absolute value does |
| 696 | 711 |
/// not exceed \c epsilon. |
| 697 | 712 |
void simplify(Value epsilon = 0.0) {
|
| 698 | 713 |
std::map<int, Value>::iterator it=comps.begin(); |
| 699 | 714 |
while (it != comps.end()) {
|
| 700 | 715 |
std::map<int, Value>::iterator jt=it; |
| 701 | 716 |
++jt; |
| 702 | 717 |
if (std::fabs((*it).second) <= epsilon) comps.erase(it); |
| 703 | 718 |
it=jt; |
| 704 | 719 |
} |
| 705 | 720 |
} |
| 706 | 721 |
|
| 707 | 722 |
void simplify(Value epsilon = 0.0) const {
|
| 708 | 723 |
const_cast<DualExpr*>(this)->simplify(epsilon); |
| 709 | 724 |
} |
| 710 | 725 |
|
| 711 | 726 |
///Sets all coefficients to 0. |
| 712 | 727 |
void clear() {
|
| 713 | 728 |
comps.clear(); |
| 714 | 729 |
} |
| 715 | 730 |
///Compound assignment |
| 716 | 731 |
DualExpr &operator+=(const DualExpr &e) {
|
| 717 | 732 |
for (std::map<int, Value>::const_iterator it=e.comps.begin(); |
| 718 | 733 |
it!=e.comps.end(); ++it) |
| 719 | 734 |
comps[it->first]+=it->second; |
| 720 | 735 |
return *this; |
| 721 | 736 |
} |
| 722 | 737 |
///Compound assignment |
| 723 | 738 |
DualExpr &operator-=(const DualExpr &e) {
|
| 724 | 739 |
for (std::map<int, Value>::const_iterator it=e.comps.begin(); |
| 725 | 740 |
it!=e.comps.end(); ++it) |
| 726 | 741 |
comps[it->first]-=it->second; |
| 727 | 742 |
return *this; |
| 728 | 743 |
} |
| 729 | 744 |
///Multiply with a constant |
| 730 | 745 |
DualExpr &operator*=(const Value &v) {
|
| 731 | 746 |
for (std::map<int, Value>::iterator it=comps.begin(); |
| 732 | 747 |
it!=comps.end(); ++it) |
| 733 | 748 |
it->second*=v; |
| 734 | 749 |
return *this; |
| 735 | 750 |
} |
| 736 | 751 |
///Division with a constant |
| 737 | 752 |
DualExpr &operator/=(const Value &v) {
|
| 738 | 753 |
for (std::map<int, Value>::iterator it=comps.begin(); |
| 739 | 754 |
it!=comps.end(); ++it) |
| 740 | 755 |
it->second/=v; |
| 741 | 756 |
return *this; |
| 742 | 757 |
} |
| 743 | 758 |
|
| 744 | 759 |
///Iterator over the expression |
| 745 | 760 |
|
| 746 | 761 |
///The iterator iterates over the terms of the expression. |
| 747 | 762 |
/// |
| 748 | 763 |
///\code |
| 749 | 764 |
///double s=0; |
| 750 | 765 |
///for(LpBase::DualExpr::CoeffIt i(e);i!=INVALID;++i) |
| 751 | 766 |
/// s+= *i * dual(i); |
| 752 | 767 |
///\endcode |
| 753 | 768 |
class CoeffIt {
|
| 754 | 769 |
private: |
| 755 | 770 |
|
| 756 | 771 |
std::map<int, Value>::iterator _it, _end; |
| 757 | 772 |
|
| 758 | 773 |
public: |
| 759 | 774 |
|
| 760 | 775 |
/// Sets the iterator to the first term |
| 761 | 776 |
|
| 762 | 777 |
/// Sets the iterator to the first term of the expression. |
| 763 | 778 |
/// |
| 764 | 779 |
CoeffIt(DualExpr& e) |
| 765 | 780 |
: _it(e.comps.begin()), _end(e.comps.end()){}
|
| 766 | 781 |
|
| 767 | 782 |
/// Convert the iterator to the row of the term |
| 768 | 783 |
operator Row() const {
|
| 769 | 784 |
return rowFromId(_it->first); |
| 770 | 785 |
} |
| 771 | 786 |
|
| 772 | 787 |
/// Returns the coefficient of the term |
| 773 | 788 |
Value& operator*() { return _it->second; }
|
| 774 | 789 |
|
| 775 | 790 |
/// Returns the coefficient of the term |
| 776 | 791 |
const Value& operator*() const { return _it->second; }
|
| 777 | 792 |
|
| 778 | 793 |
/// Next term |
| 779 | 794 |
|
| 780 | 795 |
/// Assign the iterator to the next term. |
| 781 | 796 |
/// |
| 782 | 797 |
CoeffIt& operator++() { ++_it; return *this; }
|
| 783 | 798 |
|
| 784 | 799 |
/// Equality operator |
| 785 | 800 |
bool operator==(Invalid) const { return _it == _end; }
|
| 786 | 801 |
/// Inequality operator |
| 787 | 802 |
bool operator!=(Invalid) const { return _it != _end; }
|
| 788 | 803 |
}; |
| 789 | 804 |
|
| 790 | 805 |
///Iterator over the expression |
| 791 | 806 |
|
| 792 | 807 |
///The iterator iterates over the terms of the expression. |
| 793 | 808 |
/// |
| 794 | 809 |
///\code |
| 795 | 810 |
///double s=0; |
| 796 | 811 |
///for(LpBase::DualExpr::ConstCoeffIt i(e);i!=INVALID;++i) |
| 797 | 812 |
/// s+= *i * dual(i); |
| 798 | 813 |
///\endcode |
| 799 | 814 |
class ConstCoeffIt {
|
| 800 | 815 |
private: |
| 801 | 816 |
|
| 802 | 817 |
std::map<int, Value>::const_iterator _it, _end; |
| 803 | 818 |
|
| 804 | 819 |
public: |
| 805 | 820 |
|
| 806 | 821 |
/// Sets the iterator to the first term |
| 807 | 822 |
|
| 808 | 823 |
/// Sets the iterator to the first term of the expression. |
| 809 | 824 |
/// |
| 810 | 825 |
ConstCoeffIt(const DualExpr& e) |
| 811 | 826 |
: _it(e.comps.begin()), _end(e.comps.end()){}
|
| 812 | 827 |
|
| 813 | 828 |
/// Convert the iterator to the row of the term |
| 814 | 829 |
operator Row() const {
|
| 815 | 830 |
return rowFromId(_it->first); |
| 816 | 831 |
} |
| 817 | 832 |
|
| 818 | 833 |
/// Returns the coefficient of the term |
| 819 | 834 |
const Value& operator*() const { return _it->second; }
|
| 820 | 835 |
|
| 821 | 836 |
/// Next term |
| 822 | 837 |
|
| 823 | 838 |
/// Assign the iterator to the next term. |
| 824 | 839 |
/// |
| 825 | 840 |
ConstCoeffIt& operator++() { ++_it; return *this; }
|
| 826 | 841 |
|
| 827 | 842 |
/// Equality operator |
| 828 | 843 |
bool operator==(Invalid) const { return _it == _end; }
|
| 829 | 844 |
/// Inequality operator |
| 830 | 845 |
bool operator!=(Invalid) const { return _it != _end; }
|
| 831 | 846 |
}; |
| 832 | 847 |
}; |
| 833 | 848 |
|
| 834 | 849 |
|
| 835 | 850 |
protected: |
| 836 | 851 |
|
| 837 | 852 |
class InsertIterator {
|
| 838 | 853 |
private: |
| 839 | 854 |
|
| 840 | 855 |
std::map<int, Value>& _host; |
| 841 | 856 |
const _solver_bits::VarIndex& _index; |
| 842 | 857 |
|
| 843 | 858 |
public: |
| 844 | 859 |
|
| 845 | 860 |
typedef std::output_iterator_tag iterator_category; |
| 846 | 861 |
typedef void difference_type; |
| 847 | 862 |
typedef void value_type; |
| 848 | 863 |
typedef void reference; |
| 849 | 864 |
typedef void pointer; |
| 850 | 865 |
|
| 851 | 866 |
InsertIterator(std::map<int, Value>& host, |
| 852 | 867 |
const _solver_bits::VarIndex& index) |
| 853 | 868 |
: _host(host), _index(index) {}
|
| 854 | 869 |
|
| 855 | 870 |
InsertIterator& operator=(const std::pair<int, Value>& value) {
|
| 856 | 871 |
typedef std::map<int, Value>::value_type pair_type; |
| 857 | 872 |
_host.insert(pair_type(_index[value.first], value.second)); |
| 858 | 873 |
return *this; |
| 859 | 874 |
} |
| 860 | 875 |
|
| 861 | 876 |
InsertIterator& operator*() { return *this; }
|
| 862 | 877 |
InsertIterator& operator++() { return *this; }
|
| 863 | 878 |
InsertIterator operator++(int) { return *this; }
|
| 864 | 879 |
|
| 865 | 880 |
}; |
| 866 | 881 |
|
| 867 | 882 |
class ExprIterator {
|
| 868 | 883 |
private: |
| 869 | 884 |
std::map<int, Value>::const_iterator _host_it; |
| 870 | 885 |
const _solver_bits::VarIndex& _index; |
| 871 | 886 |
public: |
| 872 | 887 |
|
| 873 | 888 |
typedef std::bidirectional_iterator_tag iterator_category; |
| 874 | 889 |
typedef std::ptrdiff_t difference_type; |
| 875 | 890 |
typedef const std::pair<int, Value> value_type; |
| 876 | 891 |
typedef value_type reference; |
| 877 | 892 |
|
| 878 | 893 |
class pointer {
|
| 879 | 894 |
public: |
| 880 | 895 |
pointer(value_type& _value) : value(_value) {}
|
| 881 | 896 |
value_type* operator->() { return &value; }
|
| 882 | 897 |
private: |
| 883 | 898 |
value_type value; |
| 884 | 899 |
}; |
| 885 | 900 |
|
| 886 | 901 |
ExprIterator(const std::map<int, Value>::const_iterator& host_it, |
| 887 | 902 |
const _solver_bits::VarIndex& index) |
| 888 | 903 |
: _host_it(host_it), _index(index) {}
|
| 889 | 904 |
|
| 890 | 905 |
reference operator*() {
|
| 891 | 906 |
return std::make_pair(_index(_host_it->first), _host_it->second); |
| 892 | 907 |
} |
| 893 | 908 |
|
| 894 | 909 |
pointer operator->() {
|
| 895 | 910 |
return pointer(operator*()); |
| 896 | 911 |
} |
| 897 | 912 |
|
| 898 | 913 |
ExprIterator& operator++() { ++_host_it; return *this; }
|
| 899 | 914 |
ExprIterator operator++(int) {
|
| 900 | 915 |
ExprIterator tmp(*this); ++_host_it; return tmp; |
| 901 | 916 |
} |
| 902 | 917 |
|
| 903 | 918 |
ExprIterator& operator--() { --_host_it; return *this; }
|
| 904 | 919 |
ExprIterator operator--(int) {
|
| 905 | 920 |
ExprIterator tmp(*this); --_host_it; return tmp; |
| 906 | 921 |
} |
| 907 | 922 |
|
| 908 | 923 |
bool operator==(const ExprIterator& it) const {
|
| 909 | 924 |
return _host_it == it._host_it; |
| 910 | 925 |
} |
| 911 | 926 |
|
| 912 | 927 |
bool operator!=(const ExprIterator& it) const {
|
| 913 | 928 |
return _host_it != it._host_it; |
| 914 | 929 |
} |
| 915 | 930 |
|
| 916 | 931 |
}; |
| 917 | 932 |
|
| 918 | 933 |
protected: |
| 919 | 934 |
|
| 920 | 935 |
//Abstract virtual functions |
| 921 |
virtual LpBase* _newSolver() const = 0; |
|
| 922 |
virtual LpBase* _cloneSolver() const = 0; |
|
| 923 | 936 |
|
| 924 | 937 |
virtual int _addColId(int col) { return cols.addIndex(col); }
|
| 925 | 938 |
virtual int _addRowId(int row) { return rows.addIndex(row); }
|
| 926 | 939 |
|
| 927 | 940 |
virtual void _eraseColId(int col) { cols.eraseIndex(col); }
|
| 928 | 941 |
virtual void _eraseRowId(int row) { rows.eraseIndex(row); }
|
| 929 | 942 |
|
| 930 | 943 |
virtual int _addCol() = 0; |
| 931 | 944 |
virtual int _addRow() = 0; |
| 932 | 945 |
|
| 946 |
virtual int _addRow(Value l, ExprIterator b, ExprIterator e, Value u) {
|
|
| 947 |
int row = _addRow(); |
|
| 948 |
_setRowCoeffs(row, b, e); |
|
| 949 |
_setRowLowerBound(row, l); |
|
| 950 |
_setRowUpperBound(row, u); |
|
| 951 |
return row; |
|
| 952 |
} |
|
| 953 |
|
|
| 933 | 954 |
virtual void _eraseCol(int col) = 0; |
| 934 | 955 |
virtual void _eraseRow(int row) = 0; |
| 935 | 956 |
|
| 936 | 957 |
virtual void _getColName(int col, std::string& name) const = 0; |
| 937 | 958 |
virtual void _setColName(int col, const std::string& name) = 0; |
| 938 | 959 |
virtual int _colByName(const std::string& name) const = 0; |
| 939 | 960 |
|
| 940 | 961 |
virtual void _getRowName(int row, std::string& name) const = 0; |
| 941 | 962 |
virtual void _setRowName(int row, const std::string& name) = 0; |
| 942 | 963 |
virtual int _rowByName(const std::string& name) const = 0; |
| 943 | 964 |
|
| 944 | 965 |
virtual void _setRowCoeffs(int i, ExprIterator b, ExprIterator e) = 0; |
| 945 | 966 |
virtual void _getRowCoeffs(int i, InsertIterator b) const = 0; |
| 946 | 967 |
|
| 947 | 968 |
virtual void _setColCoeffs(int i, ExprIterator b, ExprIterator e) = 0; |
| 948 | 969 |
virtual void _getColCoeffs(int i, InsertIterator b) const = 0; |
| 949 | 970 |
|
| 950 | 971 |
virtual void _setCoeff(int row, int col, Value value) = 0; |
| 951 | 972 |
virtual Value _getCoeff(int row, int col) const = 0; |
| 952 | 973 |
|
| 953 | 974 |
virtual void _setColLowerBound(int i, Value value) = 0; |
| 954 | 975 |
virtual Value _getColLowerBound(int i) const = 0; |
| 955 | 976 |
|
| 956 | 977 |
virtual void _setColUpperBound(int i, Value value) = 0; |
| 957 | 978 |
virtual Value _getColUpperBound(int i) const = 0; |
| 958 | 979 |
|
| 959 | 980 |
virtual void _setRowLowerBound(int i, Value value) = 0; |
| 960 | 981 |
virtual Value _getRowLowerBound(int i) const = 0; |
| 961 | 982 |
|
| 962 | 983 |
virtual void _setRowUpperBound(int i, Value value) = 0; |
| 963 | 984 |
virtual Value _getRowUpperBound(int i) const = 0; |
| 964 | 985 |
|
| 965 | 986 |
virtual void _setObjCoeffs(ExprIterator b, ExprIterator e) = 0; |
| 966 | 987 |
virtual void _getObjCoeffs(InsertIterator b) const = 0; |
| 967 | 988 |
|
| 968 | 989 |
virtual void _setObjCoeff(int i, Value obj_coef) = 0; |
| 969 | 990 |
virtual Value _getObjCoeff(int i) const = 0; |
| 970 | 991 |
|
| 971 | 992 |
virtual void _setSense(Sense) = 0; |
| 972 | 993 |
virtual Sense _getSense() const = 0; |
| 973 | 994 |
|
| 974 | 995 |
virtual void _clear() = 0; |
| 975 | 996 |
|
| 976 | 997 |
virtual const char* _solverName() const = 0; |
| 977 | 998 |
|
| 999 |
virtual void _messageLevel(MessageLevel level) = 0; |
|
| 1000 |
|
|
| 978 | 1001 |
//Own protected stuff |
| 979 | 1002 |
|
| 980 | 1003 |
//Constant component of the objective function |
| 981 | 1004 |
Value obj_const_comp; |
| 982 | 1005 |
|
| 983 | 1006 |
LpBase() : rows(), cols(), obj_const_comp(0) {}
|
| 984 | 1007 |
|
| 985 | 1008 |
public: |
| 986 | 1009 |
|
| 987 | 1010 |
/// Virtual destructor |
| 988 | 1011 |
virtual ~LpBase() {}
|
| 989 | 1012 |
|
| 990 |
///Creates a new LP problem |
|
| 991 |
LpBase* newSolver() {return _newSolver();}
|
|
| 992 |
///Makes a copy of the LP problem |
|
| 993 |
LpBase* cloneSolver() {return _cloneSolver();}
|
|
| 994 |
|
|
| 995 | 1013 |
///Gives back the name of the solver. |
| 996 | 1014 |
const char* solverName() const {return _solverName();}
|
| 997 | 1015 |
|
| 998 |
///\name Build |
|
| 1016 |
///\name Build Up and Modify the LP |
|
| 999 | 1017 |
|
| 1000 | 1018 |
///@{
|
| 1001 | 1019 |
|
| 1002 | 1020 |
///Add a new empty column (i.e a new variable) to the LP |
| 1003 | 1021 |
Col addCol() { Col c; c._id = _addColId(_addCol()); return c;}
|
| 1004 | 1022 |
|
| 1005 | 1023 |
///\brief Adds several new columns (i.e variables) at once |
| 1006 | 1024 |
/// |
| 1007 | 1025 |
///This magic function takes a container as its argument and fills |
| 1008 | 1026 |
///its elements with new columns (i.e. variables) |
| 1009 | 1027 |
///\param t can be |
| 1010 | 1028 |
///- a standard STL compatible iterable container with |
| 1011 | 1029 |
///\ref Col as its \c values_type like |
| 1012 | 1030 |
///\code |
| 1013 | 1031 |
///std::vector<LpBase::Col> |
| 1014 | 1032 |
///std::list<LpBase::Col> |
| 1015 | 1033 |
///\endcode |
| 1016 | 1034 |
///- a standard STL compatible iterable container with |
| 1017 | 1035 |
///\ref Col as its \c mapped_type like |
| 1018 | 1036 |
///\code |
| 1019 | 1037 |
///std::map<AnyType,LpBase::Col> |
| 1020 | 1038 |
///\endcode |
| 1021 | 1039 |
///- an iterable lemon \ref concepts::WriteMap "write map" like |
| 1022 | 1040 |
///\code |
| 1023 | 1041 |
///ListGraph::NodeMap<LpBase::Col> |
| 1024 | 1042 |
///ListGraph::ArcMap<LpBase::Col> |
| 1025 | 1043 |
///\endcode |
| 1026 | 1044 |
///\return The number of the created column. |
| 1027 | 1045 |
#ifdef DOXYGEN |
| 1028 | 1046 |
template<class T> |
| 1029 | 1047 |
int addColSet(T &t) { return 0;}
|
| 1030 | 1048 |
#else |
| 1031 | 1049 |
template<class T> |
| 1032 | 1050 |
typename enable_if<typename T::value_type::LpCol,int>::type |
| 1033 | 1051 |
addColSet(T &t,dummy<0> = 0) {
|
| 1034 | 1052 |
int s=0; |
| 1035 | 1053 |
for(typename T::iterator i=t.begin();i!=t.end();++i) {*i=addCol();s++;}
|
| 1036 | 1054 |
return s; |
| 1037 | 1055 |
} |
| 1038 | 1056 |
template<class T> |
| 1039 | 1057 |
typename enable_if<typename T::value_type::second_type::LpCol, |
| 1040 | 1058 |
int>::type |
| 1041 | 1059 |
addColSet(T &t,dummy<1> = 1) {
|
| 1042 | 1060 |
int s=0; |
| 1043 | 1061 |
for(typename T::iterator i=t.begin();i!=t.end();++i) {
|
| 1044 | 1062 |
i->second=addCol(); |
| 1045 | 1063 |
s++; |
| 1046 | 1064 |
} |
| 1047 | 1065 |
return s; |
| 1048 | 1066 |
} |
| 1049 | 1067 |
template<class T> |
| 1050 | 1068 |
typename enable_if<typename T::MapIt::Value::LpCol, |
| 1051 | 1069 |
int>::type |
| 1052 | 1070 |
addColSet(T &t,dummy<2> = 2) {
|
| 1053 | 1071 |
int s=0; |
| 1054 | 1072 |
for(typename T::MapIt i(t); i!=INVALID; ++i) |
| 1055 | 1073 |
{
|
| 1056 | 1074 |
i.set(addCol()); |
| 1057 | 1075 |
s++; |
| 1058 | 1076 |
} |
| 1059 | 1077 |
return s; |
| 1060 | 1078 |
} |
| 1061 | 1079 |
#endif |
| 1062 | 1080 |
|
| 1063 | 1081 |
///Set a column (i.e a dual constraint) of the LP |
| 1064 | 1082 |
|
| 1065 | 1083 |
///\param c is the column to be modified |
| 1066 | 1084 |
///\param e is a dual linear expression (see \ref DualExpr) |
| 1067 | 1085 |
///a better one. |
| 1068 | 1086 |
void col(Col c, const DualExpr &e) {
|
| 1069 | 1087 |
e.simplify(); |
| 1070 |
_setColCoeffs(cols(id(c)), ExprIterator(e.comps.begin(), cols), |
|
| 1071 |
ExprIterator(e.comps.end(), cols)); |
|
| 1088 |
_setColCoeffs(cols(id(c)), ExprIterator(e.comps.begin(), rows), |
|
| 1089 |
ExprIterator(e.comps.end(), rows)); |
|
| 1072 | 1090 |
} |
| 1073 | 1091 |
|
| 1074 | 1092 |
///Get a column (i.e a dual constraint) of the LP |
| 1075 | 1093 |
|
| 1076 | 1094 |
///\param c is the column to get |
| 1077 | 1095 |
///\return the dual expression associated to the column |
| 1078 | 1096 |
DualExpr col(Col c) const {
|
| 1079 | 1097 |
DualExpr e; |
| 1080 | 1098 |
_getColCoeffs(cols(id(c)), InsertIterator(e.comps, rows)); |
| 1081 | 1099 |
return e; |
| 1082 | 1100 |
} |
| 1083 | 1101 |
|
| 1084 | 1102 |
///Add a new column to the LP |
| 1085 | 1103 |
|
| 1086 | 1104 |
///\param e is a dual linear expression (see \ref DualExpr) |
| 1087 | 1105 |
///\param o is the corresponding component of the objective |
| 1088 | 1106 |
///function. It is 0 by default. |
| 1089 | 1107 |
///\return The created column. |
| 1090 | 1108 |
Col addCol(const DualExpr &e, Value o = 0) {
|
| 1091 | 1109 |
Col c=addCol(); |
| 1092 | 1110 |
col(c,e); |
| 1093 | 1111 |
objCoeff(c,o); |
| 1094 | 1112 |
return c; |
| 1095 | 1113 |
} |
| 1096 | 1114 |
|
| 1097 | 1115 |
///Add a new empty row (i.e a new constraint) to the LP |
| 1098 | 1116 |
|
| 1099 | 1117 |
///This function adds a new empty row (i.e a new constraint) to the LP. |
| 1100 | 1118 |
///\return The created row |
| 1101 | 1119 |
Row addRow() { Row r; r._id = _addRowId(_addRow()); return r;}
|
| 1102 | 1120 |
|
| 1103 | 1121 |
///\brief Add several new rows (i.e constraints) at once |
| 1104 | 1122 |
/// |
| 1105 | 1123 |
///This magic function takes a container as its argument and fills |
| 1106 | 1124 |
///its elements with new row (i.e. variables) |
| 1107 | 1125 |
///\param t can be |
| 1108 | 1126 |
///- a standard STL compatible iterable container with |
| 1109 | 1127 |
///\ref Row as its \c values_type like |
| 1110 | 1128 |
///\code |
| 1111 | 1129 |
///std::vector<LpBase::Row> |
| 1112 | 1130 |
///std::list<LpBase::Row> |
| 1113 | 1131 |
///\endcode |
| 1114 | 1132 |
///- a standard STL compatible iterable container with |
| 1115 | 1133 |
///\ref Row as its \c mapped_type like |
| 1116 | 1134 |
///\code |
| 1117 | 1135 |
///std::map<AnyType,LpBase::Row> |
| 1118 | 1136 |
///\endcode |
| 1119 | 1137 |
///- an iterable lemon \ref concepts::WriteMap "write map" like |
| 1120 | 1138 |
///\code |
| 1121 | 1139 |
///ListGraph::NodeMap<LpBase::Row> |
| 1122 | 1140 |
///ListGraph::ArcMap<LpBase::Row> |
| 1123 | 1141 |
///\endcode |
| 1124 | 1142 |
///\return The number of rows created. |
| 1125 | 1143 |
#ifdef DOXYGEN |
| 1126 | 1144 |
template<class T> |
| 1127 | 1145 |
int addRowSet(T &t) { return 0;}
|
| 1128 | 1146 |
#else |
| 1129 | 1147 |
template<class T> |
| 1130 | 1148 |
typename enable_if<typename T::value_type::LpRow,int>::type |
| 1131 | 1149 |
addRowSet(T &t, dummy<0> = 0) {
|
| 1132 | 1150 |
int s=0; |
| 1133 | 1151 |
for(typename T::iterator i=t.begin();i!=t.end();++i) {*i=addRow();s++;}
|
| 1134 | 1152 |
return s; |
| 1135 | 1153 |
} |
| 1136 | 1154 |
template<class T> |
| 1137 | 1155 |
typename enable_if<typename T::value_type::second_type::LpRow, int>::type |
| 1138 | 1156 |
addRowSet(T &t, dummy<1> = 1) {
|
| 1139 | 1157 |
int s=0; |
| 1140 | 1158 |
for(typename T::iterator i=t.begin();i!=t.end();++i) {
|
| 1141 | 1159 |
i->second=addRow(); |
| 1142 | 1160 |
s++; |
| 1143 | 1161 |
} |
| 1144 | 1162 |
return s; |
| 1145 | 1163 |
} |
| 1146 | 1164 |
template<class T> |
| 1147 | 1165 |
typename enable_if<typename T::MapIt::Value::LpRow, int>::type |
| 1148 | 1166 |
addRowSet(T &t, dummy<2> = 2) {
|
| 1149 | 1167 |
int s=0; |
| 1150 | 1168 |
for(typename T::MapIt i(t); i!=INVALID; ++i) |
| 1151 | 1169 |
{
|
| 1152 | 1170 |
i.set(addRow()); |
| 1153 | 1171 |
s++; |
| 1154 | 1172 |
} |
| 1155 | 1173 |
return s; |
| 1156 | 1174 |
} |
| 1157 | 1175 |
#endif |
| 1158 | 1176 |
|
| 1159 | 1177 |
///Set a row (i.e a constraint) of the LP |
| 1160 | 1178 |
|
| 1161 | 1179 |
///\param r is the row to be modified |
| 1162 | 1180 |
///\param l is lower bound (-\ref INF means no bound) |
| 1163 | 1181 |
///\param e is a linear expression (see \ref Expr) |
| 1164 | 1182 |
///\param u is the upper bound (\ref INF means no bound) |
| 1165 | 1183 |
void row(Row r, Value l, const Expr &e, Value u) {
|
| 1166 | 1184 |
e.simplify(); |
| 1167 | 1185 |
_setRowCoeffs(rows(id(r)), ExprIterator(e.comps.begin(), cols), |
| 1168 | 1186 |
ExprIterator(e.comps.end(), cols)); |
| 1169 | 1187 |
_setRowLowerBound(rows(id(r)),l - *e); |
| 1170 | 1188 |
_setRowUpperBound(rows(id(r)),u - *e); |
| 1171 | 1189 |
} |
| 1172 | 1190 |
|
| 1173 | 1191 |
///Set a row (i.e a constraint) of the LP |
| 1174 | 1192 |
|
| 1175 | 1193 |
///\param r is the row to be modified |
| 1176 | 1194 |
///\param c is a linear expression (see \ref Constr) |
| 1177 | 1195 |
void row(Row r, const Constr &c) {
|
| 1178 | 1196 |
row(r, c.lowerBounded()?c.lowerBound():-INF, |
| 1179 | 1197 |
c.expr(), c.upperBounded()?c.upperBound():INF); |
| 1180 | 1198 |
} |
| 1181 | 1199 |
|
| 1182 | 1200 |
|
| 1183 | 1201 |
///Get a row (i.e a constraint) of the LP |
| 1184 | 1202 |
|
| 1185 | 1203 |
///\param r is the row to get |
| 1186 | 1204 |
///\return the expression associated to the row |
| 1187 | 1205 |
Expr row(Row r) const {
|
| 1188 | 1206 |
Expr e; |
| 1189 | 1207 |
_getRowCoeffs(rows(id(r)), InsertIterator(e.comps, cols)); |
| 1190 | 1208 |
return e; |
| 1191 | 1209 |
} |
| 1192 | 1210 |
|
| 1193 | 1211 |
///Add a new row (i.e a new constraint) to the LP |
| 1194 | 1212 |
|
| 1195 | 1213 |
///\param l is the lower bound (-\ref INF means no bound) |
| 1196 | 1214 |
///\param e is a linear expression (see \ref Expr) |
| 1197 | 1215 |
///\param u is the upper bound (\ref INF means no bound) |
| 1198 | 1216 |
///\return The created row. |
| 1199 | 1217 |
Row addRow(Value l,const Expr &e, Value u) {
|
| 1200 |
Row r=addRow(); |
|
| 1201 |
row(r,l,e,u); |
|
| 1218 |
Row r; |
|
| 1219 |
e.simplify(); |
|
| 1220 |
r._id = _addRowId(_addRow(l - *e, ExprIterator(e.comps.begin(), cols), |
|
| 1221 |
ExprIterator(e.comps.end(), cols), u - *e)); |
|
| 1202 | 1222 |
return r; |
| 1203 | 1223 |
} |
| 1204 | 1224 |
|
| 1205 | 1225 |
///Add a new row (i.e a new constraint) to the LP |
| 1206 | 1226 |
|
| 1207 | 1227 |
///\param c is a linear expression (see \ref Constr) |
| 1208 | 1228 |
///\return The created row. |
| 1209 | 1229 |
Row addRow(const Constr &c) {
|
| 1210 |
Row r=addRow(); |
|
| 1211 |
row(r,c); |
|
| 1230 |
Row r; |
|
| 1231 |
c.expr().simplify(); |
|
| 1232 |
r._id = _addRowId(_addRow(c.lowerBounded()?c.lowerBound():-INF, |
|
| 1233 |
ExprIterator(c.expr().comps.begin(), cols), |
|
| 1234 |
ExprIterator(c.expr().comps.end(), cols), |
|
| 1235 |
c.upperBounded()?c.upperBound():INF)); |
|
| 1212 | 1236 |
return r; |
| 1213 | 1237 |
} |
| 1214 | 1238 |
///Erase a column (i.e a variable) from the LP |
| 1215 | 1239 |
|
| 1216 | 1240 |
///\param c is the column to be deleted |
| 1217 | 1241 |
void erase(Col c) {
|
| 1218 | 1242 |
_eraseCol(cols(id(c))); |
| 1219 | 1243 |
_eraseColId(cols(id(c))); |
| 1220 | 1244 |
} |
| 1221 | 1245 |
///Erase a row (i.e a constraint) from the LP |
| 1222 | 1246 |
|
| 1223 | 1247 |
///\param r is the row to be deleted |
| 1224 | 1248 |
void erase(Row r) {
|
| 1225 | 1249 |
_eraseRow(rows(id(r))); |
| 1226 | 1250 |
_eraseRowId(rows(id(r))); |
| 1227 | 1251 |
} |
| 1228 | 1252 |
|
| 1229 | 1253 |
/// Get the name of a column |
| 1230 | 1254 |
|
| 1231 | 1255 |
///\param c is the coresponding column |
| 1232 | 1256 |
///\return The name of the colunm |
| 1233 | 1257 |
std::string colName(Col c) const {
|
| 1234 | 1258 |
std::string name; |
| 1235 | 1259 |
_getColName(cols(id(c)), name); |
| 1236 | 1260 |
return name; |
| 1237 | 1261 |
} |
| 1238 | 1262 |
|
| 1239 | 1263 |
/// Set the name of a column |
| 1240 | 1264 |
|
| 1241 | 1265 |
///\param c is the coresponding column |
| 1242 | 1266 |
///\param name The name to be given |
| 1243 | 1267 |
void colName(Col c, const std::string& name) {
|
| 1244 | 1268 |
_setColName(cols(id(c)), name); |
| 1245 | 1269 |
} |
| 1246 | 1270 |
|
| 1247 | 1271 |
/// Get the column by its name |
| 1248 | 1272 |
|
| 1249 | 1273 |
///\param name The name of the column |
| 1250 | 1274 |
///\return the proper column or \c INVALID |
| 1251 | 1275 |
Col colByName(const std::string& name) const {
|
| 1252 | 1276 |
int k = _colByName(name); |
| 1253 | 1277 |
return k != -1 ? Col(cols[k]) : Col(INVALID); |
| 1254 | 1278 |
} |
| 1255 | 1279 |
|
| 1256 | 1280 |
/// Get the name of a row |
| 1257 | 1281 |
|
| 1258 | 1282 |
///\param r is the coresponding row |
| 1259 | 1283 |
///\return The name of the row |
| 1260 | 1284 |
std::string rowName(Row r) const {
|
| 1261 | 1285 |
std::string name; |
| 1262 | 1286 |
_getRowName(rows(id(r)), name); |
| 1263 | 1287 |
return name; |
| 1264 | 1288 |
} |
| 1265 | 1289 |
|
| 1266 | 1290 |
/// Set the name of a row |
| 1267 | 1291 |
|
| 1268 | 1292 |
///\param r is the coresponding row |
| 1269 | 1293 |
///\param name The name to be given |
| 1270 | 1294 |
void rowName(Row r, const std::string& name) {
|
| 1271 | 1295 |
_setRowName(rows(id(r)), name); |
| 1272 | 1296 |
} |
| 1273 | 1297 |
|
| 1274 | 1298 |
/// Get the row by its name |
| 1275 | 1299 |
|
| 1276 | 1300 |
///\param name The name of the row |
| 1277 | 1301 |
///\return the proper row or \c INVALID |
| 1278 | 1302 |
Row rowByName(const std::string& name) const {
|
| 1279 | 1303 |
int k = _rowByName(name); |
| 1280 | 1304 |
return k != -1 ? Row(rows[k]) : Row(INVALID); |
| 1281 | 1305 |
} |
| 1282 | 1306 |
|
| 1283 | 1307 |
/// Set an element of the coefficient matrix of the LP |
| 1284 | 1308 |
|
| 1285 | 1309 |
///\param r is the row of the element to be modified |
| 1286 | 1310 |
///\param c is the column of the element to be modified |
| 1287 | 1311 |
///\param val is the new value of the coefficient |
| 1288 | 1312 |
void coeff(Row r, Col c, Value val) {
|
| 1289 | 1313 |
_setCoeff(rows(id(r)),cols(id(c)), val); |
| 1290 | 1314 |
} |
| 1291 | 1315 |
|
| 1292 | 1316 |
/// Get an element of the coefficient matrix of the LP |
| 1293 | 1317 |
|
| 1294 | 1318 |
///\param r is the row of the element |
| 1295 | 1319 |
///\param c is the column of the element |
| 1296 | 1320 |
///\return the corresponding coefficient |
| 1297 | 1321 |
Value coeff(Row r, Col c) const {
|
| 1298 | 1322 |
return _getCoeff(rows(id(r)),cols(id(c))); |
| 1299 | 1323 |
} |
| 1300 | 1324 |
|
| 1301 | 1325 |
/// Set the lower bound of a column (i.e a variable) |
| 1302 | 1326 |
|
| 1303 | 1327 |
/// The lower bound of a variable (column) has to be given by an |
| 1304 | 1328 |
/// extended number of type Value, i.e. a finite number of type |
| 1305 | 1329 |
/// Value or -\ref INF. |
| 1306 | 1330 |
void colLowerBound(Col c, Value value) {
|
| 1307 | 1331 |
_setColLowerBound(cols(id(c)),value); |
| 1308 | 1332 |
} |
| 1309 | 1333 |
|
| 1310 | 1334 |
/// Get the lower bound of a column (i.e a variable) |
| 1311 | 1335 |
|
| 1312 | 1336 |
/// This function returns the lower bound for column (variable) \c c |
| 1313 | 1337 |
/// (this might be -\ref INF as well). |
| 1314 | 1338 |
///\return The lower bound for column \c c |
| 1315 | 1339 |
Value colLowerBound(Col c) const {
|
| 1316 | 1340 |
return _getColLowerBound(cols(id(c))); |
| 1317 | 1341 |
} |
| 1318 | 1342 |
|
| 1319 | 1343 |
///\brief Set the lower bound of several columns |
| 1320 | 1344 |
///(i.e variables) at once |
| 1321 | 1345 |
/// |
| 1322 | 1346 |
///This magic function takes a container as its argument |
| 1323 | 1347 |
///and applies the function on all of its elements. |
| 1324 | 1348 |
///The lower bound of a variable (column) has to be given by an |
| 1325 | 1349 |
///extended number of type Value, i.e. a finite number of type |
| 1326 | 1350 |
///Value or -\ref INF. |
| 1327 | 1351 |
#ifdef DOXYGEN |
| 1328 | 1352 |
template<class T> |
| 1329 | 1353 |
void colLowerBound(T &t, Value value) { return 0;}
|
| 1330 | 1354 |
#else |
| 1331 | 1355 |
template<class T> |
| 1332 | 1356 |
typename enable_if<typename T::value_type::LpCol,void>::type |
| 1333 | 1357 |
colLowerBound(T &t, Value value,dummy<0> = 0) {
|
| 1334 | 1358 |
for(typename T::iterator i=t.begin();i!=t.end();++i) {
|
| 1335 | 1359 |
colLowerBound(*i, value); |
| 1336 | 1360 |
} |
| 1337 | 1361 |
} |
| 1338 | 1362 |
template<class T> |
| 1339 | 1363 |
typename enable_if<typename T::value_type::second_type::LpCol, |
| 1340 | 1364 |
void>::type |
| 1341 | 1365 |
colLowerBound(T &t, Value value,dummy<1> = 1) {
|
| 1342 | 1366 |
for(typename T::iterator i=t.begin();i!=t.end();++i) {
|
| 1343 | 1367 |
colLowerBound(i->second, value); |
| 1344 | 1368 |
} |
| 1345 | 1369 |
} |
| 1346 | 1370 |
template<class T> |
| 1347 | 1371 |
typename enable_if<typename T::MapIt::Value::LpCol, |
| 1348 | 1372 |
void>::type |
| 1349 | 1373 |
colLowerBound(T &t, Value value,dummy<2> = 2) {
|
| 1350 | 1374 |
for(typename T::MapIt i(t); i!=INVALID; ++i){
|
| 1351 | 1375 |
colLowerBound(*i, value); |
| 1352 | 1376 |
} |
| 1353 | 1377 |
} |
| 1354 | 1378 |
#endif |
| 1355 | 1379 |
|
| 1356 | 1380 |
/// Set the upper bound of a column (i.e a variable) |
| 1357 | 1381 |
|
| 1358 | 1382 |
/// The upper bound of a variable (column) has to be given by an |
| 1359 | 1383 |
/// extended number of type Value, i.e. a finite number of type |
| 1360 | 1384 |
/// Value or \ref INF. |
| 1361 | 1385 |
void colUpperBound(Col c, Value value) {
|
| 1362 | 1386 |
_setColUpperBound(cols(id(c)),value); |
| 1363 | 1387 |
}; |
| 1364 | 1388 |
|
| 1365 | 1389 |
/// Get the upper bound of a column (i.e a variable) |
| 1366 | 1390 |
|
| 1367 | 1391 |
/// This function returns the upper bound for column (variable) \c c |
| 1368 | 1392 |
/// (this might be \ref INF as well). |
| 1369 | 1393 |
/// \return The upper bound for column \c c |
| 1370 | 1394 |
Value colUpperBound(Col c) const {
|
| 1371 | 1395 |
return _getColUpperBound(cols(id(c))); |
| 1372 | 1396 |
} |
| 1373 | 1397 |
|
| 1374 | 1398 |
///\brief Set the upper bound of several columns |
| 1375 | 1399 |
///(i.e variables) at once |
| 1376 | 1400 |
/// |
| 1377 | 1401 |
///This magic function takes a container as its argument |
| 1378 | 1402 |
///and applies the function on all of its elements. |
| 1379 | 1403 |
///The upper bound of a variable (column) has to be given by an |
| 1380 | 1404 |
///extended number of type Value, i.e. a finite number of type |
| 1381 | 1405 |
///Value or \ref INF. |
| 1382 | 1406 |
#ifdef DOXYGEN |
| 1383 | 1407 |
template<class T> |
| 1384 | 1408 |
void colUpperBound(T &t, Value value) { return 0;}
|
| 1385 | 1409 |
#else |
| 1386 |
template<class T> |
|
| 1387 |
typename enable_if<typename T::value_type::LpCol,void>::type |
|
| 1388 |
colUpperBound(T &t, Value value,dummy<0> = 0) {
|
|
| 1389 |
for(typename T::iterator i=t.begin();i!=t.end();++i) {
|
|
| 1410 |
template<class T1> |
|
| 1411 |
typename enable_if<typename T1::value_type::LpCol,void>::type |
|
| 1412 |
colUpperBound(T1 &t, Value value,dummy<0> = 0) {
|
|
| 1413 |
for(typename T1::iterator i=t.begin();i!=t.end();++i) {
|
|
| 1390 | 1414 |
colUpperBound(*i, value); |
| 1391 | 1415 |
} |
| 1392 | 1416 |
} |
| 1393 |
template<class T> |
|
| 1394 |
typename enable_if<typename T::value_type::second_type::LpCol, |
|
| 1417 |
template<class T1> |
|
| 1418 |
typename enable_if<typename T1::value_type::second_type::LpCol, |
|
| 1395 | 1419 |
void>::type |
| 1396 |
colUpperBound(T &t, Value value,dummy<1> = 1) {
|
|
| 1397 |
for(typename T::iterator i=t.begin();i!=t.end();++i) {
|
|
| 1420 |
colUpperBound(T1 &t, Value value,dummy<1> = 1) {
|
|
| 1421 |
for(typename T1::iterator i=t.begin();i!=t.end();++i) {
|
|
| 1398 | 1422 |
colUpperBound(i->second, value); |
| 1399 | 1423 |
} |
| 1400 | 1424 |
} |
| 1401 |
template<class T> |
|
| 1402 |
typename enable_if<typename T::MapIt::Value::LpCol, |
|
| 1425 |
template<class T1> |
|
| 1426 |
typename enable_if<typename T1::MapIt::Value::LpCol, |
|
| 1403 | 1427 |
void>::type |
| 1404 |
colUpperBound(T &t, Value value,dummy<2> = 2) {
|
|
| 1405 |
for(typename T::MapIt i(t); i!=INVALID; ++i){
|
|
| 1428 |
colUpperBound(T1 &t, Value value,dummy<2> = 2) {
|
|
| 1429 |
for(typename T1::MapIt i(t); i!=INVALID; ++i){
|
|
| 1406 | 1430 |
colUpperBound(*i, value); |
| 1407 | 1431 |
} |
| 1408 | 1432 |
} |
| 1409 | 1433 |
#endif |
| 1410 | 1434 |
|
| 1411 | 1435 |
/// Set the lower and the upper bounds of a column (i.e a variable) |
| 1412 | 1436 |
|
| 1413 | 1437 |
/// The lower and the upper bounds of |
| 1414 | 1438 |
/// a variable (column) have to be given by an |
| 1415 | 1439 |
/// extended number of type Value, i.e. a finite number of type |
| 1416 | 1440 |
/// Value, -\ref INF or \ref INF. |
| 1417 | 1441 |
void colBounds(Col c, Value lower, Value upper) {
|
| 1418 | 1442 |
_setColLowerBound(cols(id(c)),lower); |
| 1419 | 1443 |
_setColUpperBound(cols(id(c)),upper); |
| 1420 | 1444 |
} |
| 1421 | 1445 |
|
| 1422 | 1446 |
///\brief Set the lower and the upper bound of several columns |
| 1423 | 1447 |
///(i.e variables) at once |
| 1424 | 1448 |
/// |
| 1425 | 1449 |
///This magic function takes a container as its argument |
| 1426 | 1450 |
///and applies the function on all of its elements. |
| 1427 | 1451 |
/// The lower and the upper bounds of |
| 1428 | 1452 |
/// a variable (column) have to be given by an |
| 1429 | 1453 |
/// extended number of type Value, i.e. a finite number of type |
| 1430 | 1454 |
/// Value, -\ref INF or \ref INF. |
| 1431 | 1455 |
#ifdef DOXYGEN |
| 1432 | 1456 |
template<class T> |
| 1433 | 1457 |
void colBounds(T &t, Value lower, Value upper) { return 0;}
|
| 1434 | 1458 |
#else |
| 1435 |
template<class T> |
|
| 1436 |
typename enable_if<typename T::value_type::LpCol,void>::type |
|
| 1437 |
colBounds(T &t, Value lower, Value upper,dummy<0> = 0) {
|
|
| 1438 |
for(typename T::iterator i=t.begin();i!=t.end();++i) {
|
|
| 1459 |
template<class T2> |
|
| 1460 |
typename enable_if<typename T2::value_type::LpCol,void>::type |
|
| 1461 |
colBounds(T2 &t, Value lower, Value upper,dummy<0> = 0) {
|
|
| 1462 |
for(typename T2::iterator i=t.begin();i!=t.end();++i) {
|
|
| 1439 | 1463 |
colBounds(*i, lower, upper); |
| 1440 | 1464 |
} |
| 1441 | 1465 |
} |
| 1442 |
template<class T> |
|
| 1443 |
typename enable_if<typename T::value_type::second_type::LpCol, void>::type |
|
| 1444 |
colBounds(T &t, Value lower, Value upper,dummy<1> = 1) {
|
|
| 1445 |
for(typename T::iterator i=t.begin();i!=t.end();++i) {
|
|
| 1466 |
template<class T2> |
|
| 1467 |
typename enable_if<typename T2::value_type::second_type::LpCol, void>::type |
|
| 1468 |
colBounds(T2 &t, Value lower, Value upper,dummy<1> = 1) {
|
|
| 1469 |
for(typename T2::iterator i=t.begin();i!=t.end();++i) {
|
|
| 1446 | 1470 |
colBounds(i->second, lower, upper); |
| 1447 | 1471 |
} |
| 1448 | 1472 |
} |
| 1449 |
template<class T> |
|
| 1450 |
typename enable_if<typename T::MapIt::Value::LpCol, void>::type |
|
| 1451 |
colBounds(T &t, Value lower, Value upper,dummy<2> = 2) {
|
|
| 1452 |
for(typename T::MapIt i(t); i!=INVALID; ++i){
|
|
| 1473 |
template<class T2> |
|
| 1474 |
typename enable_if<typename T2::MapIt::Value::LpCol, void>::type |
|
| 1475 |
colBounds(T2 &t, Value lower, Value upper,dummy<2> = 2) {
|
|
| 1476 |
for(typename T2::MapIt i(t); i!=INVALID; ++i){
|
|
| 1453 | 1477 |
colBounds(*i, lower, upper); |
| 1454 | 1478 |
} |
| 1455 | 1479 |
} |
| 1456 | 1480 |
#endif |
| 1457 | 1481 |
|
| 1458 | 1482 |
/// Set the lower bound of a row (i.e a constraint) |
| 1459 | 1483 |
|
| 1460 | 1484 |
/// The lower bound of a constraint (row) has to be given by an |
| 1461 | 1485 |
/// extended number of type Value, i.e. a finite number of type |
| 1462 | 1486 |
/// Value or -\ref INF. |
| 1463 | 1487 |
void rowLowerBound(Row r, Value value) {
|
| 1464 | 1488 |
_setRowLowerBound(rows(id(r)),value); |
| 1465 | 1489 |
} |
| 1466 | 1490 |
|
| 1467 | 1491 |
/// Get the lower bound of a row (i.e a constraint) |
| 1468 | 1492 |
|
| 1469 | 1493 |
/// This function returns the lower bound for row (constraint) \c c |
| 1470 | 1494 |
/// (this might be -\ref INF as well). |
| 1471 | 1495 |
///\return The lower bound for row \c r |
| 1472 | 1496 |
Value rowLowerBound(Row r) const {
|
| 1473 | 1497 |
return _getRowLowerBound(rows(id(r))); |
| 1474 | 1498 |
} |
| 1475 | 1499 |
|
| 1476 | 1500 |
/// Set the upper bound of a row (i.e a constraint) |
| 1477 | 1501 |
|
| 1478 | 1502 |
/// The upper bound of a constraint (row) has to be given by an |
| 1479 | 1503 |
/// extended number of type Value, i.e. a finite number of type |
| 1480 | 1504 |
/// Value or -\ref INF. |
| 1481 | 1505 |
void rowUpperBound(Row r, Value value) {
|
| 1482 | 1506 |
_setRowUpperBound(rows(id(r)),value); |
| 1483 | 1507 |
} |
| 1484 | 1508 |
|
| 1485 | 1509 |
/// Get the upper bound of a row (i.e a constraint) |
| 1486 | 1510 |
|
| 1487 | 1511 |
/// This function returns the upper bound for row (constraint) \c c |
| 1488 | 1512 |
/// (this might be -\ref INF as well). |
| 1489 | 1513 |
///\return The upper bound for row \c r |
| 1490 | 1514 |
Value rowUpperBound(Row r) const {
|
| 1491 | 1515 |
return _getRowUpperBound(rows(id(r))); |
| 1492 | 1516 |
} |
| 1493 | 1517 |
|
| 1494 | 1518 |
///Set an element of the objective function |
| 1495 | 1519 |
void objCoeff(Col c, Value v) {_setObjCoeff(cols(id(c)),v); };
|
| 1496 | 1520 |
|
| 1497 | 1521 |
///Get an element of the objective function |
| 1498 | 1522 |
Value objCoeff(Col c) const { return _getObjCoeff(cols(id(c))); };
|
| 1499 | 1523 |
|
| 1500 | 1524 |
///Set the objective function |
| 1501 | 1525 |
|
| 1502 | 1526 |
///\param e is a linear expression of type \ref Expr. |
| 1503 | 1527 |
/// |
| 1504 | 1528 |
void obj(const Expr& e) {
|
| 1505 | 1529 |
_setObjCoeffs(ExprIterator(e.comps.begin(), cols), |
| 1506 | 1530 |
ExprIterator(e.comps.end(), cols)); |
| 1507 | 1531 |
obj_const_comp = *e; |
| 1508 | 1532 |
} |
| 1509 | 1533 |
|
| 1510 | 1534 |
///Get the objective function |
| 1511 | 1535 |
|
| 1512 | 1536 |
///\return the objective function as a linear expression of type |
| 1513 | 1537 |
///Expr. |
| 1514 | 1538 |
Expr obj() const {
|
| 1515 | 1539 |
Expr e; |
| 1516 | 1540 |
_getObjCoeffs(InsertIterator(e.comps, cols)); |
| 1517 | 1541 |
*e = obj_const_comp; |
| 1518 | 1542 |
return e; |
| 1519 | 1543 |
} |
| 1520 | 1544 |
|
| 1521 | 1545 |
|
| 1522 | 1546 |
///Set the direction of optimization |
| 1523 | 1547 |
void sense(Sense sense) { _setSense(sense); }
|
| 1524 | 1548 |
|
| 1525 | 1549 |
///Query the direction of the optimization |
| 1526 | 1550 |
Sense sense() const {return _getSense(); }
|
| 1527 | 1551 |
|
| 1528 | 1552 |
///Set the sense to maximization |
| 1529 | 1553 |
void max() { _setSense(MAX); }
|
| 1530 | 1554 |
|
| 1531 | 1555 |
///Set the sense to maximization |
| 1532 | 1556 |
void min() { _setSense(MIN); }
|
| 1533 | 1557 |
|
| 1534 | 1558 |
///Clears the problem |
| 1535 | 1559 |
void clear() { _clear(); }
|
| 1536 | 1560 |
|
| 1561 |
/// Sets the message level of the solver |
|
| 1562 |
void messageLevel(MessageLevel level) { _messageLevel(level); }
|
|
| 1563 |
|
|
| 1537 | 1564 |
///@} |
| 1538 | 1565 |
|
| 1539 | 1566 |
}; |
| 1540 | 1567 |
|
| 1541 | 1568 |
/// Addition |
| 1542 | 1569 |
|
| 1543 | 1570 |
///\relates LpBase::Expr |
| 1544 | 1571 |
/// |
| 1545 | 1572 |
inline LpBase::Expr operator+(const LpBase::Expr &a, const LpBase::Expr &b) {
|
| 1546 | 1573 |
LpBase::Expr tmp(a); |
| 1547 | 1574 |
tmp+=b; |
| 1548 | 1575 |
return tmp; |
| 1549 | 1576 |
} |
| 1550 | 1577 |
///Substraction |
| 1551 | 1578 |
|
| 1552 | 1579 |
///\relates LpBase::Expr |
| 1553 | 1580 |
/// |
| 1554 | 1581 |
inline LpBase::Expr operator-(const LpBase::Expr &a, const LpBase::Expr &b) {
|
| 1555 | 1582 |
LpBase::Expr tmp(a); |
| 1556 | 1583 |
tmp-=b; |
| 1557 | 1584 |
return tmp; |
| 1558 | 1585 |
} |
| 1559 | 1586 |
///Multiply with constant |
| 1560 | 1587 |
|
| 1561 | 1588 |
///\relates LpBase::Expr |
| 1562 | 1589 |
/// |
| 1563 | 1590 |
inline LpBase::Expr operator*(const LpBase::Expr &a, const LpBase::Value &b) {
|
| 1564 | 1591 |
LpBase::Expr tmp(a); |
| 1565 | 1592 |
tmp*=b; |
| 1566 | 1593 |
return tmp; |
| 1567 | 1594 |
} |
| 1568 | 1595 |
|
| 1569 | 1596 |
///Multiply with constant |
| 1570 | 1597 |
|
| 1571 | 1598 |
///\relates LpBase::Expr |
| 1572 | 1599 |
/// |
| 1573 | 1600 |
inline LpBase::Expr operator*(const LpBase::Value &a, const LpBase::Expr &b) {
|
| 1574 | 1601 |
LpBase::Expr tmp(b); |
| 1575 | 1602 |
tmp*=a; |
| 1576 | 1603 |
return tmp; |
| 1577 | 1604 |
} |
| 1578 | 1605 |
///Divide with constant |
| 1579 | 1606 |
|
| 1580 | 1607 |
///\relates LpBase::Expr |
| 1581 | 1608 |
/// |
| 1582 | 1609 |
inline LpBase::Expr operator/(const LpBase::Expr &a, const LpBase::Value &b) {
|
| 1583 | 1610 |
LpBase::Expr tmp(a); |
| 1584 | 1611 |
tmp/=b; |
| 1585 | 1612 |
return tmp; |
| 1586 | 1613 |
} |
| 1587 | 1614 |
|
| 1588 | 1615 |
///Create constraint |
| 1589 | 1616 |
|
| 1590 | 1617 |
///\relates LpBase::Constr |
| 1591 | 1618 |
/// |
| 1592 | 1619 |
inline LpBase::Constr operator<=(const LpBase::Expr &e, |
| 1593 | 1620 |
const LpBase::Expr &f) {
|
| 1594 | 1621 |
return LpBase::Constr(0, f - e, LpBase::INF); |
| 1595 | 1622 |
} |
| 1596 | 1623 |
|
| 1597 | 1624 |
///Create constraint |
| 1598 | 1625 |
|
| 1599 | 1626 |
///\relates LpBase::Constr |
| 1600 | 1627 |
/// |
| 1601 | 1628 |
inline LpBase::Constr operator<=(const LpBase::Value &e, |
| 1602 | 1629 |
const LpBase::Expr &f) {
|
| 1603 | 1630 |
return LpBase::Constr(e, f, LpBase::NaN); |
| 1604 | 1631 |
} |
| 1605 | 1632 |
|
| 1606 | 1633 |
///Create constraint |
| 1607 | 1634 |
|
| 1608 | 1635 |
///\relates LpBase::Constr |
| 1609 | 1636 |
/// |
| 1610 | 1637 |
inline LpBase::Constr operator<=(const LpBase::Expr &e, |
| 1611 | 1638 |
const LpBase::Value &f) {
|
| 1612 | 1639 |
return LpBase::Constr(- LpBase::INF, e, f); |
| 1613 | 1640 |
} |
| 1614 | 1641 |
|
| 1615 | 1642 |
///Create constraint |
| 1616 | 1643 |
|
| 1617 | 1644 |
///\relates LpBase::Constr |
| 1618 | 1645 |
/// |
| 1619 | 1646 |
inline LpBase::Constr operator>=(const LpBase::Expr &e, |
| 1620 | 1647 |
const LpBase::Expr &f) {
|
| 1621 | 1648 |
return LpBase::Constr(0, e - f, LpBase::INF); |
| 1622 | 1649 |
} |
| 1623 | 1650 |
|
| 1624 | 1651 |
|
| 1625 | 1652 |
///Create constraint |
| 1626 | 1653 |
|
| 1627 | 1654 |
///\relates LpBase::Constr |
| 1628 | 1655 |
/// |
| 1629 | 1656 |
inline LpBase::Constr operator>=(const LpBase::Value &e, |
| 1630 | 1657 |
const LpBase::Expr &f) {
|
| 1631 | 1658 |
return LpBase::Constr(LpBase::NaN, f, e); |
| 1632 | 1659 |
} |
| 1633 | 1660 |
|
| 1634 | 1661 |
|
| 1635 | 1662 |
///Create constraint |
| 1636 | 1663 |
|
| 1637 | 1664 |
///\relates LpBase::Constr |
| 1638 | 1665 |
/// |
| 1639 | 1666 |
inline LpBase::Constr operator>=(const LpBase::Expr &e, |
| 1640 | 1667 |
const LpBase::Value &f) {
|
| 1641 | 1668 |
return LpBase::Constr(f, e, LpBase::INF); |
| 1642 | 1669 |
} |
| 1643 | 1670 |
|
| 1644 | 1671 |
///Create constraint |
| 1645 | 1672 |
|
| 1646 | 1673 |
///\relates LpBase::Constr |
| 1647 | 1674 |
/// |
| 1648 | 1675 |
inline LpBase::Constr operator==(const LpBase::Expr &e, |
| 1649 | 1676 |
const LpBase::Value &f) {
|
| 1650 | 1677 |
return LpBase::Constr(f, e, f); |
| 1651 | 1678 |
} |
| 1652 | 1679 |
|
| 1653 | 1680 |
///Create constraint |
| 1654 | 1681 |
|
| 1655 | 1682 |
///\relates LpBase::Constr |
| 1656 | 1683 |
/// |
| 1657 | 1684 |
inline LpBase::Constr operator==(const LpBase::Expr &e, |
| 1658 | 1685 |
const LpBase::Expr &f) {
|
| 1659 | 1686 |
return LpBase::Constr(0, f - e, 0); |
| 1660 | 1687 |
} |
| 1661 | 1688 |
|
| 1662 | 1689 |
///Create constraint |
| 1663 | 1690 |
|
| 1664 | 1691 |
///\relates LpBase::Constr |
| 1665 | 1692 |
/// |
| 1666 | 1693 |
inline LpBase::Constr operator<=(const LpBase::Value &n, |
| 1667 | 1694 |
const LpBase::Constr &c) {
|
| 1668 | 1695 |
LpBase::Constr tmp(c); |
| 1669 |
LEMON_ASSERT( |
|
| 1696 |
LEMON_ASSERT(isNaN(tmp.lowerBound()), "Wrong LP constraint"); |
|
| 1670 | 1697 |
tmp.lowerBound()=n; |
| 1671 | 1698 |
return tmp; |
| 1672 | 1699 |
} |
| 1673 | 1700 |
///Create constraint |
| 1674 | 1701 |
|
| 1675 | 1702 |
///\relates LpBase::Constr |
| 1676 | 1703 |
/// |
| 1677 | 1704 |
inline LpBase::Constr operator<=(const LpBase::Constr &c, |
| 1678 | 1705 |
const LpBase::Value &n) |
| 1679 | 1706 |
{
|
| 1680 | 1707 |
LpBase::Constr tmp(c); |
| 1681 |
LEMON_ASSERT( |
|
| 1708 |
LEMON_ASSERT(isNaN(tmp.upperBound()), "Wrong LP constraint"); |
|
| 1682 | 1709 |
tmp.upperBound()=n; |
| 1683 | 1710 |
return tmp; |
| 1684 | 1711 |
} |
| 1685 | 1712 |
|
| 1686 | 1713 |
///Create constraint |
| 1687 | 1714 |
|
| 1688 | 1715 |
///\relates LpBase::Constr |
| 1689 | 1716 |
/// |
| 1690 | 1717 |
inline LpBase::Constr operator>=(const LpBase::Value &n, |
| 1691 | 1718 |
const LpBase::Constr &c) {
|
| 1692 | 1719 |
LpBase::Constr tmp(c); |
| 1693 |
LEMON_ASSERT( |
|
| 1720 |
LEMON_ASSERT(isNaN(tmp.upperBound()), "Wrong LP constraint"); |
|
| 1694 | 1721 |
tmp.upperBound()=n; |
| 1695 | 1722 |
return tmp; |
| 1696 | 1723 |
} |
| 1697 | 1724 |
///Create constraint |
| 1698 | 1725 |
|
| 1699 | 1726 |
///\relates LpBase::Constr |
| 1700 | 1727 |
/// |
| 1701 | 1728 |
inline LpBase::Constr operator>=(const LpBase::Constr &c, |
| 1702 | 1729 |
const LpBase::Value &n) |
| 1703 | 1730 |
{
|
| 1704 | 1731 |
LpBase::Constr tmp(c); |
| 1705 |
LEMON_ASSERT( |
|
| 1732 |
LEMON_ASSERT(isNaN(tmp.lowerBound()), "Wrong LP constraint"); |
|
| 1706 | 1733 |
tmp.lowerBound()=n; |
| 1707 | 1734 |
return tmp; |
| 1708 | 1735 |
} |
| 1709 | 1736 |
|
| 1710 | 1737 |
///Addition |
| 1711 | 1738 |
|
| 1712 | 1739 |
///\relates LpBase::DualExpr |
| 1713 | 1740 |
/// |
| 1714 | 1741 |
inline LpBase::DualExpr operator+(const LpBase::DualExpr &a, |
| 1715 | 1742 |
const LpBase::DualExpr &b) {
|
| 1716 | 1743 |
LpBase::DualExpr tmp(a); |
| 1717 | 1744 |
tmp+=b; |
| 1718 | 1745 |
return tmp; |
| 1719 | 1746 |
} |
| 1720 | 1747 |
///Substraction |
| 1721 | 1748 |
|
| 1722 | 1749 |
///\relates LpBase::DualExpr |
| 1723 | 1750 |
/// |
| 1724 | 1751 |
inline LpBase::DualExpr operator-(const LpBase::DualExpr &a, |
| 1725 | 1752 |
const LpBase::DualExpr &b) {
|
| 1726 | 1753 |
LpBase::DualExpr tmp(a); |
| 1727 | 1754 |
tmp-=b; |
| 1728 | 1755 |
return tmp; |
| 1729 | 1756 |
} |
| 1730 | 1757 |
///Multiply with constant |
| 1731 | 1758 |
|
| 1732 | 1759 |
///\relates LpBase::DualExpr |
| 1733 | 1760 |
/// |
| 1734 | 1761 |
inline LpBase::DualExpr operator*(const LpBase::DualExpr &a, |
| 1735 | 1762 |
const LpBase::Value &b) {
|
| 1736 | 1763 |
LpBase::DualExpr tmp(a); |
| 1737 | 1764 |
tmp*=b; |
| 1738 | 1765 |
return tmp; |
| 1739 | 1766 |
} |
| 1740 | 1767 |
|
| 1741 | 1768 |
///Multiply with constant |
| 1742 | 1769 |
|
| 1743 | 1770 |
///\relates LpBase::DualExpr |
| 1744 | 1771 |
/// |
| 1745 | 1772 |
inline LpBase::DualExpr operator*(const LpBase::Value &a, |
| 1746 | 1773 |
const LpBase::DualExpr &b) {
|
| 1747 | 1774 |
LpBase::DualExpr tmp(b); |
| 1748 | 1775 |
tmp*=a; |
| 1749 | 1776 |
return tmp; |
| 1750 | 1777 |
} |
| 1751 | 1778 |
///Divide with constant |
| 1752 | 1779 |
|
| 1753 | 1780 |
///\relates LpBase::DualExpr |
| 1754 | 1781 |
/// |
| 1755 | 1782 |
inline LpBase::DualExpr operator/(const LpBase::DualExpr &a, |
| 1756 | 1783 |
const LpBase::Value &b) {
|
| 1757 | 1784 |
LpBase::DualExpr tmp(a); |
| 1758 | 1785 |
tmp/=b; |
| 1759 | 1786 |
return tmp; |
| 1760 | 1787 |
} |
| 1761 | 1788 |
|
| 1762 | 1789 |
/// \ingroup lp_group |
| 1763 | 1790 |
/// |
| 1764 | 1791 |
/// \brief Common base class for LP solvers |
| 1765 | 1792 |
/// |
| 1766 | 1793 |
/// This class is an abstract base class for LP solvers. This class |
| 1767 | 1794 |
/// provides a full interface for set and modify an LP problem, |
| 1768 | 1795 |
/// solve it and retrieve the solution. You can use one of the |
| 1769 | 1796 |
/// descendants as a concrete implementation, or the \c Lp |
| 1770 | 1797 |
/// default LP solver. However, if you would like to handle LP |
| 1771 | 1798 |
/// solvers as reference or pointer in a generic way, you can use |
| 1772 | 1799 |
/// this class directly. |
| 1773 | 1800 |
class LpSolver : virtual public LpBase {
|
| 1774 | 1801 |
public: |
| 1775 | 1802 |
|
| 1776 | 1803 |
/// The problem types for primal and dual problems |
| 1777 | 1804 |
enum ProblemType {
|
| 1778 |
///Feasible solution hasn't been found (but may exist). |
|
| 1805 |
/// = 0. Feasible solution hasn't been found (but may exist). |
|
| 1779 | 1806 |
UNDEFINED = 0, |
| 1780 |
///The problem has no feasible solution |
|
| 1807 |
/// = 1. The problem has no feasible solution. |
|
| 1781 | 1808 |
INFEASIBLE = 1, |
| 1782 |
///Feasible solution found |
|
| 1809 |
/// = 2. Feasible solution found. |
|
| 1783 | 1810 |
FEASIBLE = 2, |
| 1784 |
///Optimal solution exists and found |
|
| 1811 |
/// = 3. Optimal solution exists and found. |
|
| 1785 | 1812 |
OPTIMAL = 3, |
| 1786 |
///The cost function is unbounded |
|
| 1813 |
/// = 4. The cost function is unbounded. |
|
| 1787 | 1814 |
UNBOUNDED = 4 |
| 1788 | 1815 |
}; |
| 1789 | 1816 |
|
| 1790 | 1817 |
///The basis status of variables |
| 1791 | 1818 |
enum VarStatus {
|
| 1792 | 1819 |
/// The variable is in the basis |
| 1793 | 1820 |
BASIC, |
| 1794 | 1821 |
/// The variable is free, but not basic |
| 1795 | 1822 |
FREE, |
| 1796 | 1823 |
/// The variable has active lower bound |
| 1797 | 1824 |
LOWER, |
| 1798 | 1825 |
/// The variable has active upper bound |
| 1799 | 1826 |
UPPER, |
| 1800 | 1827 |
/// The variable is non-basic and fixed |
| 1801 | 1828 |
FIXED |
| 1802 | 1829 |
}; |
| 1803 | 1830 |
|
| 1804 | 1831 |
protected: |
| 1805 | 1832 |
|
| 1806 | 1833 |
virtual SolveExitStatus _solve() = 0; |
| 1807 | 1834 |
|
| 1808 | 1835 |
virtual Value _getPrimal(int i) const = 0; |
| 1809 | 1836 |
virtual Value _getDual(int i) const = 0; |
| 1810 | 1837 |
|
| 1811 | 1838 |
virtual Value _getPrimalRay(int i) const = 0; |
| 1812 | 1839 |
virtual Value _getDualRay(int i) const = 0; |
| 1813 | 1840 |
|
| 1814 | 1841 |
virtual Value _getPrimalValue() const = 0; |
| 1815 | 1842 |
|
| 1816 | 1843 |
virtual VarStatus _getColStatus(int i) const = 0; |
| 1817 | 1844 |
virtual VarStatus _getRowStatus(int i) const = 0; |
| 1818 | 1845 |
|
| 1819 | 1846 |
virtual ProblemType _getPrimalType() const = 0; |
| 1820 | 1847 |
virtual ProblemType _getDualType() const = 0; |
| 1821 | 1848 |
|
| 1822 | 1849 |
public: |
| 1823 | 1850 |
|
| 1851 |
///Allocate a new LP problem instance |
|
| 1852 |
virtual LpSolver* newSolver() const = 0; |
|
| 1853 |
///Make a copy of the LP problem |
|
| 1854 |
virtual LpSolver* cloneSolver() const = 0; |
|
| 1855 |
|
|
| 1824 | 1856 |
///\name Solve the LP |
| 1825 | 1857 |
|
| 1826 | 1858 |
///@{
|
| 1827 | 1859 |
|
| 1828 | 1860 |
///\e Solve the LP problem at hand |
| 1829 | 1861 |
/// |
| 1830 | 1862 |
///\return The result of the optimization procedure. Possible |
| 1831 | 1863 |
///values and their meanings can be found in the documentation of |
| 1832 | 1864 |
///\ref SolveExitStatus. |
| 1833 | 1865 |
SolveExitStatus solve() { return _solve(); }
|
| 1834 | 1866 |
|
| 1835 | 1867 |
///@} |
| 1836 | 1868 |
|
| 1837 |
///\name Obtain the |
|
| 1869 |
///\name Obtain the Solution |
|
| 1838 | 1870 |
|
| 1839 | 1871 |
///@{
|
| 1840 | 1872 |
|
| 1841 | 1873 |
/// The type of the primal problem |
| 1842 | 1874 |
ProblemType primalType() const {
|
| 1843 | 1875 |
return _getPrimalType(); |
| 1844 | 1876 |
} |
| 1845 | 1877 |
|
| 1846 | 1878 |
/// The type of the dual problem |
| 1847 | 1879 |
ProblemType dualType() const {
|
| 1848 | 1880 |
return _getDualType(); |
| 1849 | 1881 |
} |
| 1850 | 1882 |
|
| 1851 | 1883 |
/// Return the primal value of the column |
| 1852 | 1884 |
|
| 1853 | 1885 |
/// Return the primal value of the column. |
| 1854 | 1886 |
/// \pre The problem is solved. |
| 1855 | 1887 |
Value primal(Col c) const { return _getPrimal(cols(id(c))); }
|
| 1856 | 1888 |
|
| 1857 | 1889 |
/// Return the primal value of the expression |
| 1858 | 1890 |
|
| 1859 | 1891 |
/// Return the primal value of the expression, i.e. the dot |
| 1860 | 1892 |
/// product of the primal solution and the expression. |
| 1861 | 1893 |
/// \pre The problem is solved. |
| 1862 | 1894 |
Value primal(const Expr& e) const {
|
| 1863 | 1895 |
double res = *e; |
| 1864 | 1896 |
for (Expr::ConstCoeffIt c(e); c != INVALID; ++c) {
|
| 1865 | 1897 |
res += *c * primal(c); |
| 1866 | 1898 |
} |
| 1867 | 1899 |
return res; |
| 1868 | 1900 |
} |
| 1869 | 1901 |
/// Returns a component of the primal ray |
| 1870 | 1902 |
|
| 1871 | 1903 |
/// The primal ray is solution of the modified primal problem, |
| 1872 | 1904 |
/// where we change each finite bound to 0, and we looking for a |
| 1873 | 1905 |
/// negative objective value in case of minimization, and positive |
| 1874 | 1906 |
/// objective value for maximization. If there is such solution, |
| 1875 | 1907 |
/// that proofs the unsolvability of the dual problem, and if a |
| 1876 | 1908 |
/// feasible primal solution exists, then the unboundness of |
| 1877 | 1909 |
/// primal problem. |
| 1878 | 1910 |
/// |
| 1879 | 1911 |
/// \pre The problem is solved and the dual problem is infeasible. |
| 1880 | 1912 |
/// \note Some solvers does not provide primal ray calculation |
| 1881 | 1913 |
/// functions. |
| 1882 | 1914 |
Value primalRay(Col c) const { return _getPrimalRay(cols(id(c))); }
|
| 1883 | 1915 |
|
| 1884 | 1916 |
/// Return the dual value of the row |
| 1885 | 1917 |
|
| 1886 | 1918 |
/// Return the dual value of the row. |
| 1887 | 1919 |
/// \pre The problem is solved. |
| 1888 | 1920 |
Value dual(Row r) const { return _getDual(rows(id(r))); }
|
| 1889 | 1921 |
|
| 1890 | 1922 |
/// Return the dual value of the dual expression |
| 1891 | 1923 |
|
| 1892 | 1924 |
/// Return the dual value of the dual expression, i.e. the dot |
| 1893 | 1925 |
/// product of the dual solution and the dual expression. |
| 1894 | 1926 |
/// \pre The problem is solved. |
| 1895 | 1927 |
Value dual(const DualExpr& e) const {
|
| 1896 | 1928 |
double res = 0.0; |
| 1897 | 1929 |
for (DualExpr::ConstCoeffIt r(e); r != INVALID; ++r) {
|
| 1898 | 1930 |
res += *r * dual(r); |
| 1899 | 1931 |
} |
| 1900 | 1932 |
return res; |
| 1901 | 1933 |
} |
| 1902 | 1934 |
|
| 1903 | 1935 |
/// Returns a component of the dual ray |
| 1904 | 1936 |
|
| 1905 | 1937 |
/// The dual ray is solution of the modified primal problem, where |
| 1906 | 1938 |
/// we change each finite bound to 0 (i.e. the objective function |
| 1907 | 1939 |
/// coefficients in the primal problem), and we looking for a |
| 1908 | 1940 |
/// ositive objective value. If there is such solution, that |
| 1909 | 1941 |
/// proofs the unsolvability of the primal problem, and if a |
| 1910 | 1942 |
/// feasible dual solution exists, then the unboundness of |
| 1911 | 1943 |
/// dual problem. |
| 1912 | 1944 |
/// |
| 1913 | 1945 |
/// \pre The problem is solved and the primal problem is infeasible. |
| 1914 | 1946 |
/// \note Some solvers does not provide dual ray calculation |
| 1915 | 1947 |
/// functions. |
| 1916 | 1948 |
Value dualRay(Row r) const { return _getDualRay(rows(id(r))); }
|
| 1917 | 1949 |
|
| 1918 | 1950 |
/// Return the basis status of the column |
| 1919 | 1951 |
|
| 1920 | 1952 |
/// \see VarStatus |
| 1921 | 1953 |
VarStatus colStatus(Col c) const { return _getColStatus(cols(id(c))); }
|
| 1922 | 1954 |
|
| 1923 | 1955 |
/// Return the basis status of the row |
| 1924 | 1956 |
|
| 1925 | 1957 |
/// \see VarStatus |
| 1926 | 1958 |
VarStatus rowStatus(Row r) const { return _getRowStatus(rows(id(r))); }
|
| 1927 | 1959 |
|
| 1928 | 1960 |
///The value of the objective function |
| 1929 | 1961 |
|
| 1930 | 1962 |
///\return |
| 1931 | 1963 |
///- \ref INF or -\ref INF means either infeasibility or unboundedness |
| 1932 | 1964 |
/// of the primal problem, depending on whether we minimize or maximize. |
| 1933 | 1965 |
///- \ref NaN if no primal solution is found. |
| 1934 | 1966 |
///- The (finite) objective value if an optimal solution is found. |
| 1935 | 1967 |
Value primal() const { return _getPrimalValue()+obj_const_comp;}
|
| 1936 | 1968 |
///@} |
| 1937 | 1969 |
|
| 1938 |
LpSolver* newSolver() {return _newSolver();}
|
|
| 1939 |
LpSolver* cloneSolver() {return _cloneSolver();}
|
|
| 1940 |
|
|
| 1941 | 1970 |
protected: |
| 1942 | 1971 |
|
| 1943 |
virtual LpSolver* _newSolver() const = 0; |
|
| 1944 |
virtual LpSolver* _cloneSolver() const = 0; |
|
| 1945 | 1972 |
}; |
| 1946 | 1973 |
|
| 1947 | 1974 |
|
| 1948 | 1975 |
/// \ingroup lp_group |
| 1949 | 1976 |
/// |
| 1950 | 1977 |
/// \brief Common base class for MIP solvers |
| 1951 | 1978 |
/// |
| 1952 | 1979 |
/// This class is an abstract base class for MIP solvers. This class |
| 1953 | 1980 |
/// provides a full interface for set and modify an MIP problem, |
| 1954 | 1981 |
/// solve it and retrieve the solution. You can use one of the |
| 1955 | 1982 |
/// descendants as a concrete implementation, or the \c Lp |
| 1956 | 1983 |
/// default MIP solver. However, if you would like to handle MIP |
| 1957 | 1984 |
/// solvers as reference or pointer in a generic way, you can use |
| 1958 | 1985 |
/// this class directly. |
| 1959 | 1986 |
class MipSolver : virtual public LpBase {
|
| 1960 | 1987 |
public: |
| 1961 | 1988 |
|
| 1962 | 1989 |
/// The problem types for MIP problems |
| 1963 | 1990 |
enum ProblemType {
|
| 1964 |
///Feasible solution hasn't been found (but may exist). |
|
| 1991 |
/// = 0. Feasible solution hasn't been found (but may exist). |
|
| 1965 | 1992 |
UNDEFINED = 0, |
| 1966 |
///The problem has no feasible solution |
|
| 1993 |
/// = 1. The problem has no feasible solution. |
|
| 1967 | 1994 |
INFEASIBLE = 1, |
| 1968 |
///Feasible solution found |
|
| 1995 |
/// = 2. Feasible solution found. |
|
| 1969 | 1996 |
FEASIBLE = 2, |
| 1970 |
///Optimal solution exists and found |
|
| 1997 |
/// = 3. Optimal solution exists and found. |
|
| 1971 | 1998 |
OPTIMAL = 3, |
| 1972 |
///The cost function is unbounded |
|
| 1973 |
/// |
|
| 1974 |
///The |
|
| 1999 |
/// = 4. The cost function is unbounded. |
|
| 2000 |
///The Mip or at least the relaxed problem is unbounded. |
|
| 1975 | 2001 |
UNBOUNDED = 4 |
| 1976 | 2002 |
}; |
| 1977 | 2003 |
|
| 2004 |
///Allocate a new MIP problem instance |
|
| 2005 |
virtual MipSolver* newSolver() const = 0; |
|
| 2006 |
///Make a copy of the MIP problem |
|
| 2007 |
virtual MipSolver* cloneSolver() const = 0; |
|
| 2008 |
|
|
| 1978 | 2009 |
///\name Solve the MIP |
| 1979 | 2010 |
|
| 1980 | 2011 |
///@{
|
| 1981 | 2012 |
|
| 1982 | 2013 |
/// Solve the MIP problem at hand |
| 1983 | 2014 |
/// |
| 1984 | 2015 |
///\return The result of the optimization procedure. Possible |
| 1985 | 2016 |
///values and their meanings can be found in the documentation of |
| 1986 | 2017 |
///\ref SolveExitStatus. |
| 1987 | 2018 |
SolveExitStatus solve() { return _solve(); }
|
| 1988 | 2019 |
|
| 1989 | 2020 |
///@} |
| 1990 | 2021 |
|
| 1991 |
///\name |
|
| 2022 |
///\name Set Column Type |
|
| 1992 | 2023 |
///@{
|
| 1993 | 2024 |
|
| 1994 | 2025 |
///Possible variable (column) types (e.g. real, integer, binary etc.) |
| 1995 | 2026 |
enum ColTypes {
|
| 1996 |
///Continuous variable (default) |
|
| 2027 |
/// = 0. Continuous variable (default). |
|
| 1997 | 2028 |
REAL = 0, |
| 1998 |
///Integer variable |
|
| 2029 |
/// = 1. Integer variable. |
|
| 1999 | 2030 |
INTEGER = 1 |
| 2000 | 2031 |
}; |
| 2001 | 2032 |
|
| 2002 | 2033 |
///Sets the type of the given column to the given type |
| 2003 | 2034 |
|
| 2004 | 2035 |
///Sets the type of the given column to the given type. |
| 2005 | 2036 |
/// |
| 2006 | 2037 |
void colType(Col c, ColTypes col_type) {
|
| 2007 | 2038 |
_setColType(cols(id(c)),col_type); |
| 2008 | 2039 |
} |
| 2009 | 2040 |
|
| 2010 | 2041 |
///Gives back the type of the column. |
| 2011 | 2042 |
|
| 2012 | 2043 |
///Gives back the type of the column. |
| 2013 | 2044 |
/// |
| 2014 | 2045 |
ColTypes colType(Col c) const {
|
| 2015 | 2046 |
return _getColType(cols(id(c))); |
| 2016 | 2047 |
} |
| 2017 | 2048 |
///@} |
| 2018 | 2049 |
|
| 2019 |
///\name Obtain the |
|
| 2050 |
///\name Obtain the Solution |
|
| 2020 | 2051 |
|
| 2021 | 2052 |
///@{
|
| 2022 | 2053 |
|
| 2023 | 2054 |
/// The type of the MIP problem |
| 2024 | 2055 |
ProblemType type() const {
|
| 2025 | 2056 |
return _getType(); |
| 2026 | 2057 |
} |
| 2027 | 2058 |
|
| 2028 | 2059 |
/// Return the value of the row in the solution |
| 2029 | 2060 |
|
| 2030 | 2061 |
/// Return the value of the row in the solution. |
| 2031 | 2062 |
/// \pre The problem is solved. |
| 2032 | 2063 |
Value sol(Col c) const { return _getSol(cols(id(c))); }
|
| 2033 | 2064 |
|
| 2034 | 2065 |
/// Return the value of the expression in the solution |
| 2035 | 2066 |
|
| 2036 | 2067 |
/// Return the value of the expression in the solution, i.e. the |
| 2037 | 2068 |
/// dot product of the solution and the expression. |
| 2038 | 2069 |
/// \pre The problem is solved. |
| 2039 | 2070 |
Value sol(const Expr& e) const {
|
| 2040 | 2071 |
double res = *e; |
| 2041 | 2072 |
for (Expr::ConstCoeffIt c(e); c != INVALID; ++c) {
|
| 2042 | 2073 |
res += *c * sol(c); |
| 2043 | 2074 |
} |
| 2044 | 2075 |
return res; |
| 2045 | 2076 |
} |
| 2046 | 2077 |
///The value of the objective function |
| 2047 | 2078 |
|
| 2048 | 2079 |
///\return |
| 2049 | 2080 |
///- \ref INF or -\ref INF means either infeasibility or unboundedness |
| 2050 | 2081 |
/// of the problem, depending on whether we minimize or maximize. |
| 2051 | 2082 |
///- \ref NaN if no primal solution is found. |
| 2052 | 2083 |
///- The (finite) objective value if an optimal solution is found. |
| 2053 | 2084 |
Value solValue() const { return _getSolValue()+obj_const_comp;}
|
| 2054 | 2085 |
///@} |
| 2055 | 2086 |
|
| 2056 | 2087 |
protected: |
| 2057 | 2088 |
|
| 2058 | 2089 |
virtual SolveExitStatus _solve() = 0; |
| 2059 | 2090 |
virtual ColTypes _getColType(int col) const = 0; |
| 2060 | 2091 |
virtual void _setColType(int col, ColTypes col_type) = 0; |
| 2061 | 2092 |
virtual ProblemType _getType() const = 0; |
| 2062 | 2093 |
virtual Value _getSol(int i) const = 0; |
| 2063 | 2094 |
virtual Value _getSolValue() const = 0; |
| 2064 | 2095 |
|
| 2065 |
public: |
|
| 2066 |
|
|
| 2067 |
MipSolver* newSolver() {return _newSolver();}
|
|
| 2068 |
MipSolver* cloneSolver() {return _cloneSolver();}
|
|
| 2069 |
|
|
| 2070 |
protected: |
|
| 2071 |
|
|
| 2072 |
virtual MipSolver* _newSolver() const = 0; |
|
| 2073 |
virtual MipSolver* _cloneSolver() const = 0; |
|
| 2074 | 2096 |
}; |
| 2075 | 2097 |
|
| 2076 | 2098 |
|
| 2077 | 2099 |
|
| 2078 | 2100 |
} //namespace lemon |
| 2079 | 2101 |
|
| 2080 | 2102 |
#endif //LEMON_LP_BASE_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2008 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <lemon/lp_skeleton.h> |
| 20 | 20 |
|
| 21 | 21 |
///\file |
| 22 | 22 |
///\brief A skeleton file to implement LP solver interfaces |
| 23 | 23 |
namespace lemon {
|
| 24 | 24 |
|
| 25 | 25 |
int SkeletonSolverBase::_addCol() |
| 26 | 26 |
{
|
| 27 | 27 |
return ++col_num; |
| 28 | 28 |
} |
| 29 | 29 |
|
| 30 | 30 |
int SkeletonSolverBase::_addRow() |
| 31 | 31 |
{
|
| 32 | 32 |
return ++row_num; |
| 33 | 33 |
} |
| 34 | 34 |
|
| 35 |
int SkeletonSolverBase::_addRow(Value, ExprIterator, ExprIterator, Value) |
|
| 36 |
{
|
|
| 37 |
return ++row_num; |
|
| 38 |
} |
|
| 39 |
|
|
| 35 | 40 |
void SkeletonSolverBase::_eraseCol(int) {}
|
| 36 | 41 |
void SkeletonSolverBase::_eraseRow(int) {}
|
| 37 | 42 |
|
| 38 | 43 |
void SkeletonSolverBase::_getColName(int, std::string &) const {}
|
| 39 | 44 |
void SkeletonSolverBase::_setColName(int, const std::string &) {}
|
| 40 | 45 |
int SkeletonSolverBase::_colByName(const std::string&) const { return -1; }
|
| 41 | 46 |
|
| 42 | 47 |
void SkeletonSolverBase::_getRowName(int, std::string &) const {}
|
| 43 | 48 |
void SkeletonSolverBase::_setRowName(int, const std::string &) {}
|
| 44 | 49 |
int SkeletonSolverBase::_rowByName(const std::string&) const { return -1; }
|
| 45 | 50 |
|
| 46 | 51 |
void SkeletonSolverBase::_setRowCoeffs(int, ExprIterator, ExprIterator) {}
|
| 47 | 52 |
void SkeletonSolverBase::_getRowCoeffs(int, InsertIterator) const {}
|
| 48 | 53 |
|
| 49 | 54 |
void SkeletonSolverBase::_setColCoeffs(int, ExprIterator, ExprIterator) {}
|
| 50 | 55 |
void SkeletonSolverBase::_getColCoeffs(int, InsertIterator) const {}
|
| 51 | 56 |
|
| 52 | 57 |
void SkeletonSolverBase::_setCoeff(int, int, Value) {}
|
| 53 | 58 |
SkeletonSolverBase::Value SkeletonSolverBase::_getCoeff(int, int) const |
| 54 | 59 |
{ return 0; }
|
| 55 | 60 |
|
| 56 | 61 |
void SkeletonSolverBase::_setColLowerBound(int, Value) {}
|
| 57 | 62 |
SkeletonSolverBase::Value SkeletonSolverBase::_getColLowerBound(int) const |
| 58 | 63 |
{ return 0; }
|
| 59 | 64 |
|
| 60 | 65 |
void SkeletonSolverBase::_setColUpperBound(int, Value) {}
|
| 61 | 66 |
SkeletonSolverBase::Value SkeletonSolverBase::_getColUpperBound(int) const |
| 62 | 67 |
{ return 0; }
|
| 63 | 68 |
|
| 64 | 69 |
void SkeletonSolverBase::_setRowLowerBound(int, Value) {}
|
| 65 | 70 |
SkeletonSolverBase::Value SkeletonSolverBase::_getRowLowerBound(int) const |
| 66 | 71 |
{ return 0; }
|
| 67 | 72 |
|
| 68 | 73 |
void SkeletonSolverBase::_setRowUpperBound(int, Value) {}
|
| 69 | 74 |
SkeletonSolverBase::Value SkeletonSolverBase::_getRowUpperBound(int) const |
| 70 | 75 |
{ return 0; }
|
| 71 | 76 |
|
| 72 | 77 |
void SkeletonSolverBase::_setObjCoeffs(ExprIterator, ExprIterator) {}
|
| 73 | 78 |
void SkeletonSolverBase::_getObjCoeffs(InsertIterator) const {};
|
| 74 | 79 |
|
| 75 | 80 |
void SkeletonSolverBase::_setObjCoeff(int, Value) {}
|
| 76 | 81 |
SkeletonSolverBase::Value SkeletonSolverBase::_getObjCoeff(int) const |
| 77 | 82 |
{ return 0; }
|
| 78 | 83 |
|
| 79 | 84 |
void SkeletonSolverBase::_setSense(Sense) {}
|
| 80 | 85 |
SkeletonSolverBase::Sense SkeletonSolverBase::_getSense() const |
| 81 | 86 |
{ return MIN; }
|
| 82 | 87 |
|
| 83 | 88 |
void SkeletonSolverBase::_clear() {
|
| 84 | 89 |
row_num = col_num = 0; |
| 85 | 90 |
} |
| 86 | 91 |
|
| 92 |
void SkeletonSolverBase::_messageLevel(MessageLevel) {}
|
|
| 93 |
|
|
| 87 | 94 |
LpSkeleton::SolveExitStatus LpSkeleton::_solve() { return SOLVED; }
|
| 88 | 95 |
|
| 89 | 96 |
LpSkeleton::Value LpSkeleton::_getPrimal(int) const { return 0; }
|
| 90 | 97 |
LpSkeleton::Value LpSkeleton::_getDual(int) const { return 0; }
|
| 91 | 98 |
LpSkeleton::Value LpSkeleton::_getPrimalValue() const { return 0; }
|
| 92 | 99 |
|
| 93 | 100 |
LpSkeleton::Value LpSkeleton::_getPrimalRay(int) const { return 0; }
|
| 94 | 101 |
LpSkeleton::Value LpSkeleton::_getDualRay(int) const { return 0; }
|
| 95 | 102 |
|
| 96 | 103 |
LpSkeleton::ProblemType LpSkeleton::_getPrimalType() const |
| 97 | 104 |
{ return UNDEFINED; }
|
| 98 | 105 |
|
| 99 | 106 |
LpSkeleton::ProblemType LpSkeleton::_getDualType() const |
| 100 | 107 |
{ return UNDEFINED; }
|
| 101 | 108 |
|
| 102 | 109 |
LpSkeleton::VarStatus LpSkeleton::_getColStatus(int) const |
| 103 | 110 |
{ return BASIC; }
|
| 104 | 111 |
|
| 105 | 112 |
LpSkeleton::VarStatus LpSkeleton::_getRowStatus(int) const |
| 106 | 113 |
{ return BASIC; }
|
| 107 | 114 |
|
| 108 |
LpSkeleton* LpSkeleton:: |
|
| 115 |
LpSkeleton* LpSkeleton::newSolver() const |
|
| 109 | 116 |
{ return static_cast<LpSkeleton*>(0); }
|
| 110 | 117 |
|
| 111 |
LpSkeleton* LpSkeleton:: |
|
| 118 |
LpSkeleton* LpSkeleton::cloneSolver() const |
|
| 112 | 119 |
{ return static_cast<LpSkeleton*>(0); }
|
| 113 | 120 |
|
| 114 | 121 |
const char* LpSkeleton::_solverName() const { return "LpSkeleton"; }
|
| 115 | 122 |
|
| 116 | 123 |
MipSkeleton::SolveExitStatus MipSkeleton::_solve() |
| 117 | 124 |
{ return SOLVED; }
|
| 118 | 125 |
|
| 119 | 126 |
MipSkeleton::Value MipSkeleton::_getSol(int) const { return 0; }
|
| 120 | 127 |
MipSkeleton::Value MipSkeleton::_getSolValue() const { return 0; }
|
| 121 | 128 |
|
| 122 | 129 |
MipSkeleton::ProblemType MipSkeleton::_getType() const |
| 123 | 130 |
{ return UNDEFINED; }
|
| 124 | 131 |
|
| 125 |
MipSkeleton* MipSkeleton:: |
|
| 132 |
MipSkeleton* MipSkeleton::newSolver() const |
|
| 126 | 133 |
{ return static_cast<MipSkeleton*>(0); }
|
| 127 | 134 |
|
| 128 |
MipSkeleton* MipSkeleton:: |
|
| 135 |
MipSkeleton* MipSkeleton::cloneSolver() const |
|
| 129 | 136 |
{ return static_cast<MipSkeleton*>(0); }
|
| 130 | 137 |
|
| 131 | 138 |
const char* MipSkeleton::_solverName() const { return "MipSkeleton"; }
|
| 132 | 139 |
|
| 133 | 140 |
} //namespace lemon |
| 134 | 141 |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2008 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 |
#ifndef LEMON_LP_SKELETON |
|
| 20 |
#define LEMON_LP_SKELETON |
|
| 19 |
#ifndef LEMON_LP_SKELETON_H |
|
| 20 |
#define LEMON_LP_SKELETON_H |
|
| 21 | 21 |
|
| 22 | 22 |
#include <lemon/lp_base.h> |
| 23 | 23 |
|
| 24 | 24 |
///\file |
| 25 |
///\brief |
|
| 25 |
///\brief Skeleton file to implement LP/MIP solver interfaces |
|
| 26 |
/// |
|
| 27 |
///The classes in this file do nothing, but they can serve as skeletons when |
|
| 28 |
///implementing an interface to new solvers. |
|
| 26 | 29 |
namespace lemon {
|
| 27 | 30 |
|
| 28 |
///A skeleton class to implement LP solver |
|
| 31 |
///A skeleton class to implement LP/MIP solver base interface |
|
| 32 |
|
|
| 33 |
///This class does nothing, but it can serve as a skeleton when |
|
| 34 |
///implementing an interface to new solvers. |
|
| 29 | 35 |
class SkeletonSolverBase : public virtual LpBase {
|
| 30 | 36 |
int col_num,row_num; |
| 31 | 37 |
|
| 32 | 38 |
protected: |
| 33 | 39 |
|
| 34 | 40 |
SkeletonSolverBase() |
| 35 | 41 |
: col_num(-1), row_num(-1) {}
|
| 36 | 42 |
|
| 37 | 43 |
/// \e |
| 38 | 44 |
virtual int _addCol(); |
| 39 | 45 |
/// \e |
| 40 | 46 |
virtual int _addRow(); |
| 41 | 47 |
/// \e |
| 48 |
virtual int _addRow(Value l, ExprIterator b, ExprIterator e, Value u); |
|
| 49 |
/// \e |
|
| 42 | 50 |
virtual void _eraseCol(int i); |
| 43 | 51 |
/// \e |
| 44 | 52 |
virtual void _eraseRow(int i); |
| 45 | 53 |
|
| 46 | 54 |
/// \e |
| 47 | 55 |
virtual void _getColName(int col, std::string& name) const; |
| 48 | 56 |
/// \e |
| 49 | 57 |
virtual void _setColName(int col, const std::string& name); |
| 50 | 58 |
/// \e |
| 51 | 59 |
virtual int _colByName(const std::string& name) const; |
| 52 | 60 |
|
| 53 | 61 |
/// \e |
| 54 | 62 |
virtual void _getRowName(int row, std::string& name) const; |
| 55 | 63 |
/// \e |
| 56 | 64 |
virtual void _setRowName(int row, const std::string& name); |
| 57 | 65 |
/// \e |
| 58 | 66 |
virtual int _rowByName(const std::string& name) const; |
| 59 | 67 |
|
| 60 | 68 |
/// \e |
| 61 | 69 |
virtual void _setRowCoeffs(int i, ExprIterator b, ExprIterator e); |
| 62 | 70 |
/// \e |
| 63 | 71 |
virtual void _getRowCoeffs(int i, InsertIterator b) const; |
| 64 | 72 |
/// \e |
| 65 | 73 |
virtual void _setColCoeffs(int i, ExprIterator b, ExprIterator e); |
| 66 | 74 |
/// \e |
| 67 | 75 |
virtual void _getColCoeffs(int i, InsertIterator b) const; |
| 68 | 76 |
|
| 69 | 77 |
/// Set one element of the coefficient matrix |
| 70 | 78 |
virtual void _setCoeff(int row, int col, Value value); |
| 71 | 79 |
|
| 72 | 80 |
/// Get one element of the coefficient matrix |
| 73 | 81 |
virtual Value _getCoeff(int row, int col) const; |
| 74 | 82 |
|
| 75 | 83 |
/// The lower bound of a variable (column) have to be given by an |
| 76 | 84 |
/// extended number of type Value, i.e. a finite number of type |
| 77 | 85 |
/// Value or -\ref INF. |
| 78 | 86 |
virtual void _setColLowerBound(int i, Value value); |
| 79 | 87 |
/// \e |
| 80 | 88 |
|
| 81 | 89 |
/// The lower bound of a variable (column) is an |
| 82 | 90 |
/// extended number of type Value, i.e. a finite number of type |
| 83 | 91 |
/// Value or -\ref INF. |
| 84 | 92 |
virtual Value _getColLowerBound(int i) const; |
| 85 | 93 |
|
| 86 | 94 |
/// The upper bound of a variable (column) have to be given by an |
| 87 | 95 |
/// extended number of type Value, i.e. a finite number of type |
| 88 | 96 |
/// Value or \ref INF. |
| 89 | 97 |
virtual void _setColUpperBound(int i, Value value); |
| 90 | 98 |
/// \e |
| 91 | 99 |
|
| 92 | 100 |
/// The upper bound of a variable (column) is an |
| 93 | 101 |
/// extended number of type Value, i.e. a finite number of type |
| 94 | 102 |
/// Value or \ref INF. |
| 95 | 103 |
virtual Value _getColUpperBound(int i) const; |
| 96 | 104 |
|
| 97 | 105 |
/// The lower bound of a constraint (row) have to be given by an |
| 98 | 106 |
/// extended number of type Value, i.e. a finite number of type |
| 99 | 107 |
/// Value or -\ref INF. |
| 100 | 108 |
virtual void _setRowLowerBound(int i, Value value); |
| 101 | 109 |
/// \e |
| 102 | 110 |
|
| 103 | 111 |
/// The lower bound of a constraint (row) is an |
| 104 | 112 |
/// extended number of type Value, i.e. a finite number of type |
| 105 | 113 |
/// Value or -\ref INF. |
| 106 | 114 |
virtual Value _getRowLowerBound(int i) const; |
| 107 | 115 |
|
| 108 | 116 |
/// The upper bound of a constraint (row) have to be given by an |
| 109 | 117 |
/// extended number of type Value, i.e. a finite number of type |
| 110 | 118 |
/// Value or \ref INF. |
| 111 | 119 |
virtual void _setRowUpperBound(int i, Value value); |
| 112 | 120 |
/// \e |
| 113 | 121 |
|
| 114 | 122 |
/// The upper bound of a constraint (row) is an |
| 115 | 123 |
/// extended number of type Value, i.e. a finite number of type |
| 116 | 124 |
/// Value or \ref INF. |
| 117 | 125 |
virtual Value _getRowUpperBound(int i) const; |
| 118 | 126 |
|
| 119 | 127 |
/// \e |
| 120 | 128 |
virtual void _setObjCoeffs(ExprIterator b, ExprIterator e); |
| 121 | 129 |
/// \e |
| 122 | 130 |
virtual void _getObjCoeffs(InsertIterator b) const; |
| 123 | 131 |
|
| 124 | 132 |
/// \e |
| 125 | 133 |
virtual void _setObjCoeff(int i, Value obj_coef); |
| 126 | 134 |
/// \e |
| 127 | 135 |
virtual Value _getObjCoeff(int i) const; |
| 128 | 136 |
|
| 129 | 137 |
///\e |
| 130 | 138 |
virtual void _setSense(Sense); |
| 131 | 139 |
///\e |
| 132 | 140 |
virtual Sense _getSense() const; |
| 133 | 141 |
|
| 134 | 142 |
///\e |
| 135 | 143 |
virtual void _clear(); |
| 136 | 144 |
|
| 145 |
///\e |
|
| 146 |
virtual void _messageLevel(MessageLevel); |
|
| 137 | 147 |
}; |
| 138 | 148 |
|
| 139 |
/// \brief |
|
| 149 |
/// \brief Skeleton class for an LP solver interface |
|
| 140 | 150 |
/// |
| 141 |
/// |
|
| 151 |
///This class does nothing, but it can serve as a skeleton when |
|
| 152 |
///implementing an interface to new solvers. |
|
| 153 |
|
|
| 142 | 154 |
///\ingroup lp_group |
| 143 |
class LpSkeleton : public |
|
| 155 |
class LpSkeleton : public LpSolver, public SkeletonSolverBase {
|
|
| 144 | 156 |
public: |
| 145 |
LpSkeleton() : SkeletonSolverBase(), LpSolver() {}
|
|
| 146 |
|
|
| 157 |
///\e |
|
| 158 |
LpSkeleton() : LpSolver(), SkeletonSolverBase() {}
|
|
| 159 |
///\e |
|
| 160 |
virtual LpSkeleton* newSolver() const; |
|
| 161 |
///\e |
|
| 162 |
virtual LpSkeleton* cloneSolver() const; |
|
| 147 | 163 |
protected: |
| 148 | 164 |
|
| 149 | 165 |
///\e |
| 150 | 166 |
virtual SolveExitStatus _solve(); |
| 151 | 167 |
|
| 152 | 168 |
///\e |
| 153 | 169 |
virtual Value _getPrimal(int i) const; |
| 154 | 170 |
///\e |
| 155 | 171 |
virtual Value _getDual(int i) const; |
| 156 | 172 |
|
| 157 | 173 |
///\e |
| 158 | 174 |
virtual Value _getPrimalValue() const; |
| 159 | 175 |
|
| 160 | 176 |
///\e |
| 161 | 177 |
virtual Value _getPrimalRay(int i) const; |
| 162 | 178 |
///\e |
| 163 | 179 |
virtual Value _getDualRay(int i) const; |
| 164 | 180 |
|
| 165 | 181 |
///\e |
| 166 | 182 |
virtual ProblemType _getPrimalType() const; |
| 167 | 183 |
///\e |
| 168 | 184 |
virtual ProblemType _getDualType() const; |
| 169 | 185 |
|
| 170 | 186 |
///\e |
| 171 | 187 |
virtual VarStatus _getColStatus(int i) const; |
| 172 | 188 |
///\e |
| 173 | 189 |
virtual VarStatus _getRowStatus(int i) const; |
| 174 | 190 |
|
| 175 | 191 |
///\e |
| 176 |
virtual LpSkeleton* _newSolver() const; |
|
| 177 |
///\e |
|
| 178 |
virtual LpSkeleton* _cloneSolver() const; |
|
| 179 |
///\e |
|
| 180 | 192 |
virtual const char* _solverName() const; |
| 181 | 193 |
|
| 182 | 194 |
}; |
| 183 | 195 |
|
| 184 |
/// \brief |
|
| 196 |
/// \brief Skeleton class for a MIP solver interface |
|
| 185 | 197 |
/// |
| 186 |
/// |
|
| 198 |
///This class does nothing, but it can serve as a skeleton when |
|
| 199 |
///implementing an interface to new solvers. |
|
| 187 | 200 |
///\ingroup lp_group |
| 188 |
class MipSkeleton : public |
|
| 201 |
class MipSkeleton : public MipSolver, public SkeletonSolverBase {
|
|
| 189 | 202 |
public: |
| 190 |
|
|
| 203 |
///\e |
|
| 204 |
MipSkeleton() : MipSolver(), SkeletonSolverBase() {}
|
|
| 205 |
///\e |
|
| 206 |
virtual MipSkeleton* newSolver() const; |
|
| 207 |
///\e |
|
| 208 |
virtual MipSkeleton* cloneSolver() const; |
|
| 191 | 209 |
|
| 192 | 210 |
protected: |
| 193 | 211 |
///\e |
| 194 |
|
|
| 195 |
///\bug Wrong interface |
|
| 196 |
/// |
|
| 197 | 212 |
virtual SolveExitStatus _solve(); |
| 198 | 213 |
|
| 199 | 214 |
///\e |
| 200 |
|
|
| 201 |
///\bug Wrong interface |
|
| 202 |
/// |
|
| 203 | 215 |
virtual Value _getSol(int i) const; |
| 204 | 216 |
|
| 205 | 217 |
///\e |
| 206 |
|
|
| 207 |
///\bug Wrong interface |
|
| 208 |
/// |
|
| 209 | 218 |
virtual Value _getSolValue() const; |
| 210 | 219 |
|
| 211 | 220 |
///\e |
| 212 |
|
|
| 213 |
///\bug Wrong interface |
|
| 214 |
/// |
|
| 215 | 221 |
virtual ProblemType _getType() const; |
| 216 | 222 |
|
| 217 | 223 |
///\e |
| 218 |
virtual MipSkeleton* _newSolver() const; |
|
| 219 |
|
|
| 220 |
///\e |
|
| 221 |
virtual MipSkeleton* _cloneSolver() const; |
|
| 222 |
///\e |
|
| 223 | 224 |
virtual const char* _solverName() const; |
| 224 |
|
|
| 225 | 225 |
}; |
| 226 | 226 |
|
| 227 | 227 |
} //namespace lemon |
| 228 | 228 |
|
| 229 |
#endif |
|
| 229 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_MAPS_H |
| 20 | 20 |
#define LEMON_MAPS_H |
| 21 | 21 |
|
| 22 | 22 |
#include <iterator> |
| 23 | 23 |
#include <functional> |
| 24 | 24 |
#include <vector> |
| 25 |
#include <map> |
|
| 25 | 26 |
|
| 26 | 27 |
#include <lemon/core.h> |
| 27 | 28 |
|
| 28 | 29 |
///\file |
| 29 | 30 |
///\ingroup maps |
| 30 | 31 |
///\brief Miscellaneous property maps |
| 31 | 32 |
|
| 32 |
#include <map> |
|
| 33 |
|
|
| 34 | 33 |
namespace lemon {
|
| 35 | 34 |
|
| 36 | 35 |
/// \addtogroup maps |
| 37 | 36 |
/// @{
|
| 38 | 37 |
|
| 39 | 38 |
/// Base class of maps. |
| 40 | 39 |
|
| 41 | 40 |
/// Base class of maps. It provides the necessary type definitions |
| 42 | 41 |
/// required by the map %concepts. |
| 43 | 42 |
template<typename K, typename V> |
| 44 | 43 |
class MapBase {
|
| 45 | 44 |
public: |
| 46 | 45 |
/// \brief The key type of the map. |
| 47 | 46 |
typedef K Key; |
| 48 | 47 |
/// \brief The value type of the map. |
| 49 | 48 |
/// (The type of objects associated with the keys). |
| 50 | 49 |
typedef V Value; |
| 51 | 50 |
}; |
| 52 | 51 |
|
| 53 | 52 |
|
| 54 | 53 |
/// Null map. (a.k.a. DoNothingMap) |
| 55 | 54 |
|
| 56 | 55 |
/// This map can be used if you have to provide a map only for |
| 57 | 56 |
/// its type definitions, or if you have to provide a writable map, |
| 58 | 57 |
/// but data written to it is not required (i.e. it will be sent to |
| 59 | 58 |
/// <tt>/dev/null</tt>). |
| 60 |
/// It conforms the \ref concepts::ReadWriteMap "ReadWriteMap" concept. |
|
| 59 |
/// It conforms to the \ref concepts::ReadWriteMap "ReadWriteMap" concept. |
|
| 61 | 60 |
/// |
| 62 | 61 |
/// \sa ConstMap |
| 63 | 62 |
template<typename K, typename V> |
| 64 | 63 |
class NullMap : public MapBase<K, V> {
|
| 65 | 64 |
public: |
| 66 |
typedef MapBase<K, V> Parent; |
|
| 67 |
typedef typename Parent::Key Key; |
|
| 68 |
|
|
| 65 |
///\e |
|
| 66 |
typedef K Key; |
|
| 67 |
///\e |
|
| 68 |
typedef V Value; |
|
| 69 | 69 |
|
| 70 | 70 |
/// Gives back a default constructed element. |
| 71 | 71 |
Value operator[](const Key&) const { return Value(); }
|
| 72 | 72 |
/// Absorbs the value. |
| 73 | 73 |
void set(const Key&, const Value&) {}
|
| 74 | 74 |
}; |
| 75 | 75 |
|
| 76 | 76 |
/// Returns a \c NullMap class |
| 77 | 77 |
|
| 78 | 78 |
/// This function just returns a \c NullMap class. |
| 79 | 79 |
/// \relates NullMap |
| 80 | 80 |
template <typename K, typename V> |
| 81 | 81 |
NullMap<K, V> nullMap() {
|
| 82 | 82 |
return NullMap<K, V>(); |
| 83 | 83 |
} |
| 84 | 84 |
|
| 85 | 85 |
|
| 86 | 86 |
/// Constant map. |
| 87 | 87 |
|
| 88 | 88 |
/// This \ref concepts::ReadMap "readable map" assigns a specified |
| 89 | 89 |
/// value to each key. |
| 90 | 90 |
/// |
| 91 | 91 |
/// In other aspects it is equivalent to \c NullMap. |
| 92 |
/// So it conforms the \ref concepts::ReadWriteMap "ReadWriteMap" |
|
| 92 |
/// So it conforms to the \ref concepts::ReadWriteMap "ReadWriteMap" |
|
| 93 | 93 |
/// concept, but it absorbs the data written to it. |
| 94 | 94 |
/// |
| 95 | 95 |
/// The simplest way of using this map is through the constMap() |
| 96 | 96 |
/// function. |
| 97 | 97 |
/// |
| 98 | 98 |
/// \sa NullMap |
| 99 | 99 |
/// \sa IdentityMap |
| 100 | 100 |
template<typename K, typename V> |
| 101 | 101 |
class ConstMap : public MapBase<K, V> {
|
| 102 | 102 |
private: |
| 103 | 103 |
V _value; |
| 104 | 104 |
public: |
| 105 |
typedef MapBase<K, V> Parent; |
|
| 106 |
typedef typename Parent::Key Key; |
|
| 107 |
|
|
| 105 |
///\e |
|
| 106 |
typedef K Key; |
|
| 107 |
///\e |
|
| 108 |
typedef V Value; |
|
| 108 | 109 |
|
| 109 | 110 |
/// Default constructor |
| 110 | 111 |
|
| 111 | 112 |
/// Default constructor. |
| 112 | 113 |
/// The value of the map will be default constructed. |
| 113 | 114 |
ConstMap() {}
|
| 114 | 115 |
|
| 115 | 116 |
/// Constructor with specified initial value |
| 116 | 117 |
|
| 117 | 118 |
/// Constructor with specified initial value. |
| 118 | 119 |
/// \param v The initial value of the map. |
| 119 | 120 |
ConstMap(const Value &v) : _value(v) {}
|
| 120 | 121 |
|
| 121 | 122 |
/// Gives back the specified value. |
| 122 | 123 |
Value operator[](const Key&) const { return _value; }
|
| 123 | 124 |
|
| 124 | 125 |
/// Absorbs the value. |
| 125 | 126 |
void set(const Key&, const Value&) {}
|
| 126 | 127 |
|
| 127 | 128 |
/// Sets the value that is assigned to each key. |
| 128 | 129 |
void setAll(const Value &v) {
|
| 129 | 130 |
_value = v; |
| 130 | 131 |
} |
| 131 | 132 |
|
| 132 | 133 |
template<typename V1> |
| 133 | 134 |
ConstMap(const ConstMap<K, V1> &, const Value &v) : _value(v) {}
|
| 134 | 135 |
}; |
| 135 | 136 |
|
| 136 | 137 |
/// Returns a \c ConstMap class |
| 137 | 138 |
|
| 138 | 139 |
/// This function just returns a \c ConstMap class. |
| 139 | 140 |
/// \relates ConstMap |
| 140 | 141 |
template<typename K, typename V> |
| 141 | 142 |
inline ConstMap<K, V> constMap(const V &v) {
|
| 142 | 143 |
return ConstMap<K, V>(v); |
| 143 | 144 |
} |
| 144 | 145 |
|
| 145 | 146 |
template<typename K, typename V> |
| 146 | 147 |
inline ConstMap<K, V> constMap() {
|
| 147 | 148 |
return ConstMap<K, V>(); |
| 148 | 149 |
} |
| 149 | 150 |
|
| 150 | 151 |
|
| 151 | 152 |
template<typename T, T v> |
| 152 | 153 |
struct Const {};
|
| 153 | 154 |
|
| 154 | 155 |
/// Constant map with inlined constant value. |
| 155 | 156 |
|
| 156 | 157 |
/// This \ref concepts::ReadMap "readable map" assigns a specified |
| 157 | 158 |
/// value to each key. |
| 158 | 159 |
/// |
| 159 | 160 |
/// In other aspects it is equivalent to \c NullMap. |
| 160 |
/// So it conforms the \ref concepts::ReadWriteMap "ReadWriteMap" |
|
| 161 |
/// So it conforms to the \ref concepts::ReadWriteMap "ReadWriteMap" |
|
| 161 | 162 |
/// concept, but it absorbs the data written to it. |
| 162 | 163 |
/// |
| 163 | 164 |
/// The simplest way of using this map is through the constMap() |
| 164 | 165 |
/// function. |
| 165 | 166 |
/// |
| 166 | 167 |
/// \sa NullMap |
| 167 | 168 |
/// \sa IdentityMap |
| 168 | 169 |
template<typename K, typename V, V v> |
| 169 | 170 |
class ConstMap<K, Const<V, v> > : public MapBase<K, V> {
|
| 170 | 171 |
public: |
| 171 |
typedef MapBase<K, V> Parent; |
|
| 172 |
typedef typename Parent::Key Key; |
|
| 173 |
|
|
| 172 |
///\e |
|
| 173 |
typedef K Key; |
|
| 174 |
///\e |
|
| 175 |
typedef V Value; |
|
| 174 | 176 |
|
| 175 | 177 |
/// Constructor. |
| 176 | 178 |
ConstMap() {}
|
| 177 | 179 |
|
| 178 | 180 |
/// Gives back the specified value. |
| 179 | 181 |
Value operator[](const Key&) const { return v; }
|
| 180 | 182 |
|
| 181 | 183 |
/// Absorbs the value. |
| 182 | 184 |
void set(const Key&, const Value&) {}
|
| 183 | 185 |
}; |
| 184 | 186 |
|
| 185 | 187 |
/// Returns a \c ConstMap class with inlined constant value |
| 186 | 188 |
|
| 187 | 189 |
/// This function just returns a \c ConstMap class with inlined |
| 188 | 190 |
/// constant value. |
| 189 | 191 |
/// \relates ConstMap |
| 190 | 192 |
template<typename K, typename V, V v> |
| 191 | 193 |
inline ConstMap<K, Const<V, v> > constMap() {
|
| 192 | 194 |
return ConstMap<K, Const<V, v> >(); |
| 193 | 195 |
} |
| 194 | 196 |
|
| 195 | 197 |
|
| 196 | 198 |
/// Identity map. |
| 197 | 199 |
|
| 198 | 200 |
/// This \ref concepts::ReadMap "read-only map" gives back the given |
| 199 | 201 |
/// key as value without any modification. |
| 200 | 202 |
/// |
| 201 | 203 |
/// \sa ConstMap |
| 202 | 204 |
template <typename T> |
| 203 | 205 |
class IdentityMap : public MapBase<T, T> {
|
| 204 | 206 |
public: |
| 205 |
typedef MapBase<T, T> Parent; |
|
| 206 |
typedef typename Parent::Key Key; |
|
| 207 |
|
|
| 207 |
///\e |
|
| 208 |
typedef T Key; |
|
| 209 |
///\e |
|
| 210 |
typedef T Value; |
|
| 208 | 211 |
|
| 209 | 212 |
/// Gives back the given value without any modification. |
| 210 | 213 |
Value operator[](const Key &k) const {
|
| 211 | 214 |
return k; |
| 212 | 215 |
} |
| 213 | 216 |
}; |
| 214 | 217 |
|
| 215 | 218 |
/// Returns an \c IdentityMap class |
| 216 | 219 |
|
| 217 | 220 |
/// This function just returns an \c IdentityMap class. |
| 218 | 221 |
/// \relates IdentityMap |
| 219 | 222 |
template<typename T> |
| 220 | 223 |
inline IdentityMap<T> identityMap() {
|
| 221 | 224 |
return IdentityMap<T>(); |
| 222 | 225 |
} |
| 223 | 226 |
|
| 224 | 227 |
|
| 225 | 228 |
/// \brief Map for storing values for integer keys from the range |
| 226 | 229 |
/// <tt>[0..size-1]</tt>. |
| 227 | 230 |
/// |
| 228 | 231 |
/// This map is essentially a wrapper for \c std::vector. It assigns |
| 229 | 232 |
/// values to integer keys from the range <tt>[0..size-1]</tt>. |
| 230 | 233 |
/// It can be used with some data structures, for example |
| 231 | 234 |
/// \c UnionFind, \c BinHeap, when the used items are small |
| 232 |
/// integers. This map conforms the \ref concepts::ReferenceMap |
|
| 235 |
/// integers. This map conforms to the \ref concepts::ReferenceMap |
|
| 233 | 236 |
/// "ReferenceMap" concept. |
| 234 | 237 |
/// |
| 235 | 238 |
/// The simplest way of using this map is through the rangeMap() |
| 236 | 239 |
/// function. |
| 237 | 240 |
template <typename V> |
| 238 | 241 |
class RangeMap : public MapBase<int, V> {
|
| 239 | 242 |
template <typename V1> |
| 240 | 243 |
friend class RangeMap; |
| 241 | 244 |
private: |
| 242 | 245 |
|
| 243 | 246 |
typedef std::vector<V> Vector; |
| 244 | 247 |
Vector _vector; |
| 245 | 248 |
|
| 246 | 249 |
public: |
| 247 | 250 |
|
| 248 |
typedef MapBase<int, V> Parent; |
|
| 249 | 251 |
/// Key type |
| 250 |
typedef |
|
| 252 |
typedef int Key; |
|
| 251 | 253 |
/// Value type |
| 252 |
typedef |
|
| 254 |
typedef V Value; |
|
| 253 | 255 |
/// Reference type |
| 254 | 256 |
typedef typename Vector::reference Reference; |
| 255 | 257 |
/// Const reference type |
| 256 | 258 |
typedef typename Vector::const_reference ConstReference; |
| 257 | 259 |
|
| 258 | 260 |
typedef True ReferenceMapTag; |
| 259 | 261 |
|
| 260 | 262 |
public: |
| 261 | 263 |
|
| 262 | 264 |
/// Constructor with specified default value. |
| 263 | 265 |
RangeMap(int size = 0, const Value &value = Value()) |
| 264 | 266 |
: _vector(size, value) {}
|
| 265 | 267 |
|
| 266 | 268 |
/// Constructs the map from an appropriate \c std::vector. |
| 267 | 269 |
template <typename V1> |
| 268 | 270 |
RangeMap(const std::vector<V1>& vector) |
| 269 | 271 |
: _vector(vector.begin(), vector.end()) {}
|
| 270 | 272 |
|
| 271 | 273 |
/// Constructs the map from another \c RangeMap. |
| 272 | 274 |
template <typename V1> |
| 273 | 275 |
RangeMap(const RangeMap<V1> &c) |
| 274 | 276 |
: _vector(c._vector.begin(), c._vector.end()) {}
|
| 275 | 277 |
|
| 276 | 278 |
/// Returns the size of the map. |
| 277 | 279 |
int size() {
|
| 278 | 280 |
return _vector.size(); |
| 279 | 281 |
} |
| 280 | 282 |
|
| 281 | 283 |
/// Resizes the map. |
| 282 | 284 |
|
| 283 | 285 |
/// Resizes the underlying \c std::vector container, so changes the |
| 284 | 286 |
/// keyset of the map. |
| 285 | 287 |
/// \param size The new size of the map. The new keyset will be the |
| 286 | 288 |
/// range <tt>[0..size-1]</tt>. |
| 287 | 289 |
/// \param value The default value to assign to the new keys. |
| 288 | 290 |
void resize(int size, const Value &value = Value()) {
|
| 289 | 291 |
_vector.resize(size, value); |
| 290 | 292 |
} |
| 291 | 293 |
|
| 292 | 294 |
private: |
| 293 | 295 |
|
| 294 | 296 |
RangeMap& operator=(const RangeMap&); |
| 295 | 297 |
|
| 296 | 298 |
public: |
| 297 | 299 |
|
| 298 | 300 |
///\e |
| 299 | 301 |
Reference operator[](const Key &k) {
|
| 300 | 302 |
return _vector[k]; |
| 301 | 303 |
} |
| 302 | 304 |
|
| 303 | 305 |
///\e |
| 304 | 306 |
ConstReference operator[](const Key &k) const {
|
| 305 | 307 |
return _vector[k]; |
| 306 | 308 |
} |
| 307 | 309 |
|
| 308 | 310 |
///\e |
| 309 | 311 |
void set(const Key &k, const Value &v) {
|
| 310 | 312 |
_vector[k] = v; |
| 311 | 313 |
} |
| 312 | 314 |
}; |
| 313 | 315 |
|
| 314 | 316 |
/// Returns a \c RangeMap class |
| 315 | 317 |
|
| 316 | 318 |
/// This function just returns a \c RangeMap class. |
| 317 | 319 |
/// \relates RangeMap |
| 318 | 320 |
template<typename V> |
| 319 | 321 |
inline RangeMap<V> rangeMap(int size = 0, const V &value = V()) {
|
| 320 | 322 |
return RangeMap<V>(size, value); |
| 321 | 323 |
} |
| 322 | 324 |
|
| 323 | 325 |
/// \brief Returns a \c RangeMap class created from an appropriate |
| 324 | 326 |
/// \c std::vector |
| 325 | 327 |
|
| 326 | 328 |
/// This function just returns a \c RangeMap class created from an |
| 327 | 329 |
/// appropriate \c std::vector. |
| 328 | 330 |
/// \relates RangeMap |
| 329 | 331 |
template<typename V> |
| 330 | 332 |
inline RangeMap<V> rangeMap(const std::vector<V> &vector) {
|
| 331 | 333 |
return RangeMap<V>(vector); |
| 332 | 334 |
} |
| 333 | 335 |
|
| 334 | 336 |
|
| 335 | 337 |
/// Map type based on \c std::map |
| 336 | 338 |
|
| 337 | 339 |
/// This map is essentially a wrapper for \c std::map with addition |
| 338 | 340 |
/// that you can specify a default value for the keys that are not |
| 339 | 341 |
/// stored actually. This value can be different from the default |
| 340 | 342 |
/// contructed value (i.e. \c %Value()). |
| 341 |
/// This type conforms the \ref concepts::ReferenceMap "ReferenceMap" |
|
| 343 |
/// This type conforms to the \ref concepts::ReferenceMap "ReferenceMap" |
|
| 342 | 344 |
/// concept. |
| 343 | 345 |
/// |
| 344 | 346 |
/// This map is useful if a default value should be assigned to most of |
| 345 | 347 |
/// the keys and different values should be assigned only to a few |
| 346 | 348 |
/// keys (i.e. the map is "sparse"). |
| 347 | 349 |
/// The name of this type also refers to this important usage. |
| 348 | 350 |
/// |
| 349 | 351 |
/// Apart form that this map can be used in many other cases since it |
| 350 | 352 |
/// is based on \c std::map, which is a general associative container. |
| 351 | 353 |
/// However keep in mind that it is usually not as efficient as other |
| 352 | 354 |
/// maps. |
| 353 | 355 |
/// |
| 354 | 356 |
/// The simplest way of using this map is through the sparseMap() |
| 355 | 357 |
/// function. |
| 356 |
template <typename K, typename V, typename |
|
| 358 |
template <typename K, typename V, typename Comp = std::less<K> > |
|
| 357 | 359 |
class SparseMap : public MapBase<K, V> {
|
| 358 | 360 |
template <typename K1, typename V1, typename C1> |
| 359 | 361 |
friend class SparseMap; |
| 360 | 362 |
public: |
| 361 | 363 |
|
| 362 |
typedef MapBase<K, V> Parent; |
|
| 363 | 364 |
/// Key type |
| 364 |
typedef |
|
| 365 |
typedef K Key; |
|
| 365 | 366 |
/// Value type |
| 366 |
typedef |
|
| 367 |
typedef V Value; |
|
| 367 | 368 |
/// Reference type |
| 368 | 369 |
typedef Value& Reference; |
| 369 | 370 |
/// Const reference type |
| 370 | 371 |
typedef const Value& ConstReference; |
| 371 | 372 |
|
| 372 | 373 |
typedef True ReferenceMapTag; |
| 373 | 374 |
|
| 374 | 375 |
private: |
| 375 | 376 |
|
| 376 |
typedef std::map<K, V, |
|
| 377 |
typedef std::map<K, V, Comp> Map; |
|
| 377 | 378 |
Map _map; |
| 378 | 379 |
Value _value; |
| 379 | 380 |
|
| 380 | 381 |
public: |
| 381 | 382 |
|
| 382 | 383 |
/// \brief Constructor with specified default value. |
| 383 | 384 |
SparseMap(const Value &value = Value()) : _value(value) {}
|
| 384 | 385 |
/// \brief Constructs the map from an appropriate \c std::map, and |
| 385 | 386 |
/// explicitly specifies a default value. |
| 386 | 387 |
template <typename V1, typename Comp1> |
| 387 | 388 |
SparseMap(const std::map<Key, V1, Comp1> &map, |
| 388 | 389 |
const Value &value = Value()) |
| 389 | 390 |
: _map(map.begin(), map.end()), _value(value) {}
|
| 390 | 391 |
|
| 391 | 392 |
/// \brief Constructs the map from another \c SparseMap. |
| 392 | 393 |
template<typename V1, typename Comp1> |
| 393 | 394 |
SparseMap(const SparseMap<Key, V1, Comp1> &c) |
| 394 | 395 |
: _map(c._map.begin(), c._map.end()), _value(c._value) {}
|
| 395 | 396 |
|
| 396 | 397 |
private: |
| 397 | 398 |
|
| 398 | 399 |
SparseMap& operator=(const SparseMap&); |
| 399 | 400 |
|
| 400 | 401 |
public: |
| 401 | 402 |
|
| 402 | 403 |
///\e |
| 403 | 404 |
Reference operator[](const Key &k) {
|
| 404 | 405 |
typename Map::iterator it = _map.lower_bound(k); |
| 405 | 406 |
if (it != _map.end() && !_map.key_comp()(k, it->first)) |
| 406 | 407 |
return it->second; |
| 407 | 408 |
else |
| 408 | 409 |
return _map.insert(it, std::make_pair(k, _value))->second; |
| 409 | 410 |
} |
| 410 | 411 |
|
| 411 | 412 |
///\e |
| 412 | 413 |
ConstReference operator[](const Key &k) const {
|
| 413 | 414 |
typename Map::const_iterator it = _map.find(k); |
| 414 | 415 |
if (it != _map.end()) |
| 415 | 416 |
return it->second; |
| 416 | 417 |
else |
| 417 | 418 |
return _value; |
| 418 | 419 |
} |
| 419 | 420 |
|
| 420 | 421 |
///\e |
| 421 | 422 |
void set(const Key &k, const Value &v) {
|
| 422 | 423 |
typename Map::iterator it = _map.lower_bound(k); |
| 423 | 424 |
if (it != _map.end() && !_map.key_comp()(k, it->first)) |
| 424 | 425 |
it->second = v; |
| 425 | 426 |
else |
| 426 | 427 |
_map.insert(it, std::make_pair(k, v)); |
| 427 | 428 |
} |
| 428 | 429 |
|
| 429 | 430 |
///\e |
| 430 | 431 |
void setAll(const Value &v) {
|
| 431 | 432 |
_value = v; |
| 432 | 433 |
_map.clear(); |
| 433 | 434 |
} |
| 434 | 435 |
}; |
| 435 | 436 |
|
| 436 | 437 |
/// Returns a \c SparseMap class |
| 437 | 438 |
|
| 438 | 439 |
/// This function just returns a \c SparseMap class with specified |
| 439 | 440 |
/// default value. |
| 440 | 441 |
/// \relates SparseMap |
| 441 | 442 |
template<typename K, typename V, typename Compare> |
| 442 | 443 |
inline SparseMap<K, V, Compare> sparseMap(const V& value = V()) {
|
| 443 | 444 |
return SparseMap<K, V, Compare>(value); |
| 444 | 445 |
} |
| 445 | 446 |
|
| 446 | 447 |
template<typename K, typename V> |
| 447 | 448 |
inline SparseMap<K, V, std::less<K> > sparseMap(const V& value = V()) {
|
| 448 | 449 |
return SparseMap<K, V, std::less<K> >(value); |
| 449 | 450 |
} |
| 450 | 451 |
|
| 451 | 452 |
/// \brief Returns a \c SparseMap class created from an appropriate |
| 452 | 453 |
/// \c std::map |
| 453 | 454 |
|
| 454 | 455 |
/// This function just returns a \c SparseMap class created from an |
| 455 | 456 |
/// appropriate \c std::map. |
| 456 | 457 |
/// \relates SparseMap |
| 457 | 458 |
template<typename K, typename V, typename Compare> |
| 458 | 459 |
inline SparseMap<K, V, Compare> |
| 459 | 460 |
sparseMap(const std::map<K, V, Compare> &map, const V& value = V()) |
| 460 | 461 |
{
|
| 461 | 462 |
return SparseMap<K, V, Compare>(map, value); |
| 462 | 463 |
} |
| 463 | 464 |
|
| 464 | 465 |
/// @} |
| 465 | 466 |
|
| 466 | 467 |
/// \addtogroup map_adaptors |
| 467 | 468 |
/// @{
|
| 468 | 469 |
|
| 469 | 470 |
/// Composition of two maps |
| 470 | 471 |
|
| 471 | 472 |
/// This \ref concepts::ReadMap "read-only map" returns the |
| 472 | 473 |
/// composition of two given maps. That is to say, if \c m1 is of |
| 473 | 474 |
/// type \c M1 and \c m2 is of \c M2, then for |
| 474 | 475 |
/// \code |
| 475 | 476 |
/// ComposeMap<M1, M2> cm(m1,m2); |
| 476 | 477 |
/// \endcode |
| 477 | 478 |
/// <tt>cm[x]</tt> will be equal to <tt>m1[m2[x]]</tt>. |
| 478 | 479 |
/// |
| 479 | 480 |
/// The \c Key type of the map is inherited from \c M2 and the |
| 480 | 481 |
/// \c Value type is from \c M1. |
| 481 | 482 |
/// \c M2::Value must be convertible to \c M1::Key. |
| 482 | 483 |
/// |
| 483 | 484 |
/// The simplest way of using this map is through the composeMap() |
| 484 | 485 |
/// function. |
| 485 | 486 |
/// |
| 486 | 487 |
/// \sa CombineMap |
| 487 | 488 |
template <typename M1, typename M2> |
| 488 | 489 |
class ComposeMap : public MapBase<typename M2::Key, typename M1::Value> {
|
| 489 | 490 |
const M1 &_m1; |
| 490 | 491 |
const M2 &_m2; |
| 491 | 492 |
public: |
| 492 |
typedef MapBase<typename M2::Key, typename M1::Value> Parent; |
|
| 493 |
typedef typename Parent::Key Key; |
|
| 494 |
|
|
| 493 |
///\e |
|
| 494 |
typedef typename M2::Key Key; |
|
| 495 |
///\e |
|
| 496 |
typedef typename M1::Value Value; |
|
| 495 | 497 |
|
| 496 | 498 |
/// Constructor |
| 497 | 499 |
ComposeMap(const M1 &m1, const M2 &m2) : _m1(m1), _m2(m2) {}
|
| 498 | 500 |
|
| 499 |
/// |
|
| 501 |
///\e |
|
| 500 | 502 |
typename MapTraits<M1>::ConstReturnValue |
| 501 | 503 |
operator[](const Key &k) const { return _m1[_m2[k]]; }
|
| 502 | 504 |
}; |
| 503 | 505 |
|
| 504 | 506 |
/// Returns a \c ComposeMap class |
| 505 | 507 |
|
| 506 | 508 |
/// This function just returns a \c ComposeMap class. |
| 507 | 509 |
/// |
| 508 | 510 |
/// If \c m1 and \c m2 are maps and the \c Value type of \c m2 is |
| 509 | 511 |
/// convertible to the \c Key of \c m1, then <tt>composeMap(m1,m2)[x]</tt> |
| 510 | 512 |
/// will be equal to <tt>m1[m2[x]]</tt>. |
| 511 | 513 |
/// |
| 512 | 514 |
/// \relates ComposeMap |
| 513 | 515 |
template <typename M1, typename M2> |
| 514 | 516 |
inline ComposeMap<M1, M2> composeMap(const M1 &m1, const M2 &m2) {
|
| 515 | 517 |
return ComposeMap<M1, M2>(m1, m2); |
| 516 | 518 |
} |
| 517 | 519 |
|
| 518 | 520 |
|
| 519 | 521 |
/// Combination of two maps using an STL (binary) functor. |
| 520 | 522 |
|
| 521 | 523 |
/// This \ref concepts::ReadMap "read-only map" takes two maps and a |
| 522 | 524 |
/// binary functor and returns the combination of the two given maps |
| 523 | 525 |
/// using the functor. |
| 524 | 526 |
/// That is to say, if \c m1 is of type \c M1 and \c m2 is of \c M2 |
| 525 | 527 |
/// and \c f is of \c F, then for |
| 526 | 528 |
/// \code |
| 527 | 529 |
/// CombineMap<M1,M2,F,V> cm(m1,m2,f); |
| 528 | 530 |
/// \endcode |
| 529 | 531 |
/// <tt>cm[x]</tt> will be equal to <tt>f(m1[x],m2[x])</tt>. |
| 530 | 532 |
/// |
| 531 | 533 |
/// The \c Key type of the map is inherited from \c M1 (\c M1::Key |
| 532 | 534 |
/// must be convertible to \c M2::Key) and the \c Value type is \c V. |
| 533 | 535 |
/// \c M2::Value and \c M1::Value must be convertible to the |
| 534 | 536 |
/// corresponding input parameter of \c F and the return type of \c F |
| 535 | 537 |
/// must be convertible to \c V. |
| 536 | 538 |
/// |
| 537 | 539 |
/// The simplest way of using this map is through the combineMap() |
| 538 | 540 |
/// function. |
| 539 | 541 |
/// |
| 540 | 542 |
/// \sa ComposeMap |
| 541 | 543 |
template<typename M1, typename M2, typename F, |
| 542 | 544 |
typename V = typename F::result_type> |
| 543 | 545 |
class CombineMap : public MapBase<typename M1::Key, V> {
|
| 544 | 546 |
const M1 &_m1; |
| 545 | 547 |
const M2 &_m2; |
| 546 | 548 |
F _f; |
| 547 | 549 |
public: |
| 548 |
typedef MapBase<typename M1::Key, V> Parent; |
|
| 549 |
typedef typename Parent::Key Key; |
|
| 550 |
|
|
| 550 |
///\e |
|
| 551 |
typedef typename M1::Key Key; |
|
| 552 |
///\e |
|
| 553 |
typedef V Value; |
|
| 551 | 554 |
|
| 552 | 555 |
/// Constructor |
| 553 | 556 |
CombineMap(const M1 &m1, const M2 &m2, const F &f = F()) |
| 554 | 557 |
: _m1(m1), _m2(m2), _f(f) {}
|
| 555 |
/// |
|
| 558 |
///\e |
|
| 556 | 559 |
Value operator[](const Key &k) const { return _f(_m1[k],_m2[k]); }
|
| 557 | 560 |
}; |
| 558 | 561 |
|
| 559 | 562 |
/// Returns a \c CombineMap class |
| 560 | 563 |
|
| 561 | 564 |
/// This function just returns a \c CombineMap class. |
| 562 | 565 |
/// |
| 563 | 566 |
/// For example, if \c m1 and \c m2 are both maps with \c double |
| 564 | 567 |
/// values, then |
| 565 | 568 |
/// \code |
| 566 | 569 |
/// combineMap(m1,m2,std::plus<double>()) |
| 567 | 570 |
/// \endcode |
| 568 | 571 |
/// is equivalent to |
| 569 | 572 |
/// \code |
| 570 | 573 |
/// addMap(m1,m2) |
| 571 | 574 |
/// \endcode |
| 572 | 575 |
/// |
| 573 | 576 |
/// This function is specialized for adaptable binary function |
| 574 | 577 |
/// classes and C++ functions. |
| 575 | 578 |
/// |
| 576 | 579 |
/// \relates CombineMap |
| 577 | 580 |
template<typename M1, typename M2, typename F, typename V> |
| 578 | 581 |
inline CombineMap<M1, M2, F, V> |
| 579 | 582 |
combineMap(const M1 &m1, const M2 &m2, const F &f) {
|
| 580 | 583 |
return CombineMap<M1, M2, F, V>(m1,m2,f); |
| 581 | 584 |
} |
| 582 | 585 |
|
| 583 | 586 |
template<typename M1, typename M2, typename F> |
| 584 | 587 |
inline CombineMap<M1, M2, F, typename F::result_type> |
| 585 | 588 |
combineMap(const M1 &m1, const M2 &m2, const F &f) {
|
| 586 | 589 |
return combineMap<M1, M2, F, typename F::result_type>(m1,m2,f); |
| 587 | 590 |
} |
| 588 | 591 |
|
| 589 | 592 |
template<typename M1, typename M2, typename K1, typename K2, typename V> |
| 590 | 593 |
inline CombineMap<M1, M2, V (*)(K1, K2), V> |
| 591 | 594 |
combineMap(const M1 &m1, const M2 &m2, V (*f)(K1, K2)) {
|
| 592 | 595 |
return combineMap<M1, M2, V (*)(K1, K2), V>(m1,m2,f); |
| 593 | 596 |
} |
| 594 | 597 |
|
| 595 | 598 |
|
| 596 | 599 |
/// Converts an STL style (unary) functor to a map |
| 597 | 600 |
|
| 598 | 601 |
/// This \ref concepts::ReadMap "read-only map" returns the value |
| 599 | 602 |
/// of a given functor. Actually, it just wraps the functor and |
| 600 | 603 |
/// provides the \c Key and \c Value typedefs. |
| 601 | 604 |
/// |
| 602 | 605 |
/// Template parameters \c K and \c V will become its \c Key and |
| 603 | 606 |
/// \c Value. In most cases they have to be given explicitly because |
| 604 | 607 |
/// a functor typically does not provide \c argument_type and |
| 605 | 608 |
/// \c result_type typedefs. |
| 606 | 609 |
/// Parameter \c F is the type of the used functor. |
| 607 | 610 |
/// |
| 608 | 611 |
/// The simplest way of using this map is through the functorToMap() |
| 609 | 612 |
/// function. |
| 610 | 613 |
/// |
| 611 | 614 |
/// \sa MapToFunctor |
| 612 | 615 |
template<typename F, |
| 613 | 616 |
typename K = typename F::argument_type, |
| 614 | 617 |
typename V = typename F::result_type> |
| 615 | 618 |
class FunctorToMap : public MapBase<K, V> {
|
| 616 | 619 |
F _f; |
| 617 | 620 |
public: |
| 618 |
typedef MapBase<K, V> Parent; |
|
| 619 |
typedef typename Parent::Key Key; |
|
| 620 |
|
|
| 621 |
///\e |
|
| 622 |
typedef K Key; |
|
| 623 |
///\e |
|
| 624 |
typedef V Value; |
|
| 621 | 625 |
|
| 622 | 626 |
/// Constructor |
| 623 | 627 |
FunctorToMap(const F &f = F()) : _f(f) {}
|
| 624 |
/// |
|
| 628 |
///\e |
|
| 625 | 629 |
Value operator[](const Key &k) const { return _f(k); }
|
| 626 | 630 |
}; |
| 627 | 631 |
|
| 628 | 632 |
/// Returns a \c FunctorToMap class |
| 629 | 633 |
|
| 630 | 634 |
/// This function just returns a \c FunctorToMap class. |
| 631 | 635 |
/// |
| 632 | 636 |
/// This function is specialized for adaptable binary function |
| 633 | 637 |
/// classes and C++ functions. |
| 634 | 638 |
/// |
| 635 | 639 |
/// \relates FunctorToMap |
| 636 | 640 |
template<typename K, typename V, typename F> |
| 637 | 641 |
inline FunctorToMap<F, K, V> functorToMap(const F &f) {
|
| 638 | 642 |
return FunctorToMap<F, K, V>(f); |
| 639 | 643 |
} |
| 640 | 644 |
|
| 641 | 645 |
template <typename F> |
| 642 | 646 |
inline FunctorToMap<F, typename F::argument_type, typename F::result_type> |
| 643 | 647 |
functorToMap(const F &f) |
| 644 | 648 |
{
|
| 645 | 649 |
return FunctorToMap<F, typename F::argument_type, |
| 646 | 650 |
typename F::result_type>(f); |
| 647 | 651 |
} |
| 648 | 652 |
|
| 649 | 653 |
template <typename K, typename V> |
| 650 | 654 |
inline FunctorToMap<V (*)(K), K, V> functorToMap(V (*f)(K)) {
|
| 651 | 655 |
return FunctorToMap<V (*)(K), K, V>(f); |
| 652 | 656 |
} |
| 653 | 657 |
|
| 654 | 658 |
|
| 655 | 659 |
/// Converts a map to an STL style (unary) functor |
| 656 | 660 |
|
| 657 | 661 |
/// This class converts a map to an STL style (unary) functor. |
| 658 | 662 |
/// That is it provides an <tt>operator()</tt> to read its values. |
| 659 | 663 |
/// |
| 660 | 664 |
/// For the sake of convenience it also works as a usual |
| 661 | 665 |
/// \ref concepts::ReadMap "readable map", i.e. <tt>operator[]</tt> |
| 662 | 666 |
/// and the \c Key and \c Value typedefs also exist. |
| 663 | 667 |
/// |
| 664 | 668 |
/// The simplest way of using this map is through the mapToFunctor() |
| 665 | 669 |
/// function. |
| 666 | 670 |
/// |
| 667 | 671 |
///\sa FunctorToMap |
| 668 | 672 |
template <typename M> |
| 669 | 673 |
class MapToFunctor : public MapBase<typename M::Key, typename M::Value> {
|
| 670 | 674 |
const M &_m; |
| 671 | 675 |
public: |
| 672 |
typedef MapBase<typename M::Key, typename M::Value> Parent; |
|
| 673 |
typedef typename Parent::Key Key; |
|
| 674 |
typedef typename Parent::Value Value; |
|
| 675 |
|
|
| 676 |
typedef typename Parent::Key argument_type; |
|
| 677 |
typedef typename Parent::Value result_type; |
|
| 676 |
///\e |
|
| 677 |
typedef typename M::Key Key; |
|
| 678 |
///\e |
|
| 679 |
typedef typename M::Value Value; |
|
| 680 |
|
|
| 681 |
typedef typename M::Key argument_type; |
|
| 682 |
typedef typename M::Value result_type; |
|
| 678 | 683 |
|
| 679 | 684 |
/// Constructor |
| 680 | 685 |
MapToFunctor(const M &m) : _m(m) {}
|
| 681 |
/// |
|
| 686 |
///\e |
|
| 682 | 687 |
Value operator()(const Key &k) const { return _m[k]; }
|
| 683 |
/// |
|
| 688 |
///\e |
|
| 684 | 689 |
Value operator[](const Key &k) const { return _m[k]; }
|
| 685 | 690 |
}; |
| 686 | 691 |
|
| 687 | 692 |
/// Returns a \c MapToFunctor class |
| 688 | 693 |
|
| 689 | 694 |
/// This function just returns a \c MapToFunctor class. |
| 690 | 695 |
/// \relates MapToFunctor |
| 691 | 696 |
template<typename M> |
| 692 | 697 |
inline MapToFunctor<M> mapToFunctor(const M &m) {
|
| 693 | 698 |
return MapToFunctor<M>(m); |
| 694 | 699 |
} |
| 695 | 700 |
|
| 696 | 701 |
|
| 697 | 702 |
/// \brief Map adaptor to convert the \c Value type of a map to |
| 698 | 703 |
/// another type using the default conversion. |
| 699 | 704 |
|
| 700 | 705 |
/// Map adaptor to convert the \c Value type of a \ref concepts::ReadMap |
| 701 | 706 |
/// "readable map" to another type using the default conversion. |
| 702 | 707 |
/// The \c Key type of it is inherited from \c M and the \c Value |
| 703 | 708 |
/// type is \c V. |
| 704 |
/// This type conforms the \ref concepts::ReadMap "ReadMap" concept. |
|
| 709 |
/// This type conforms to the \ref concepts::ReadMap "ReadMap" concept. |
|
| 705 | 710 |
/// |
| 706 | 711 |
/// The simplest way of using this map is through the convertMap() |
| 707 | 712 |
/// function. |
| 708 | 713 |
template <typename M, typename V> |
| 709 | 714 |
class ConvertMap : public MapBase<typename M::Key, V> {
|
| 710 | 715 |
const M &_m; |
| 711 | 716 |
public: |
| 712 |
typedef MapBase<typename M::Key, V> Parent; |
|
| 713 |
typedef typename Parent::Key Key; |
|
| 714 |
|
|
| 717 |
///\e |
|
| 718 |
typedef typename M::Key Key; |
|
| 719 |
///\e |
|
| 720 |
typedef V Value; |
|
| 715 | 721 |
|
| 716 | 722 |
/// Constructor |
| 717 | 723 |
|
| 718 | 724 |
/// Constructor. |
| 719 | 725 |
/// \param m The underlying map. |
| 720 | 726 |
ConvertMap(const M &m) : _m(m) {}
|
| 721 | 727 |
|
| 722 |
/// |
|
| 728 |
///\e |
|
| 723 | 729 |
Value operator[](const Key &k) const { return _m[k]; }
|
| 724 | 730 |
}; |
| 725 | 731 |
|
| 726 | 732 |
/// Returns a \c ConvertMap class |
| 727 | 733 |
|
| 728 | 734 |
/// This function just returns a \c ConvertMap class. |
| 729 | 735 |
/// \relates ConvertMap |
| 730 | 736 |
template<typename V, typename M> |
| 731 | 737 |
inline ConvertMap<M, V> convertMap(const M &map) {
|
| 732 | 738 |
return ConvertMap<M, V>(map); |
| 733 | 739 |
} |
| 734 | 740 |
|
| 735 | 741 |
|
| 736 | 742 |
/// Applies all map setting operations to two maps |
| 737 | 743 |
|
| 738 | 744 |
/// This map has two \ref concepts::WriteMap "writable map" parameters |
| 739 | 745 |
/// and each write request will be passed to both of them. |
| 740 | 746 |
/// If \c M1 is also \ref concepts::ReadMap "readable", then the read |
| 741 | 747 |
/// operations will return the corresponding values of \c M1. |
| 742 | 748 |
/// |
| 743 | 749 |
/// The \c Key and \c Value types are inherited from \c M1. |
| 744 | 750 |
/// The \c Key and \c Value of \c M2 must be convertible from those |
| 745 | 751 |
/// of \c M1. |
| 746 | 752 |
/// |
| 747 | 753 |
/// The simplest way of using this map is through the forkMap() |
| 748 | 754 |
/// function. |
| 749 | 755 |
template<typename M1, typename M2> |
| 750 | 756 |
class ForkMap : public MapBase<typename M1::Key, typename M1::Value> {
|
| 751 | 757 |
M1 &_m1; |
| 752 | 758 |
M2 &_m2; |
| 753 | 759 |
public: |
| 754 |
typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
|
| 755 |
typedef typename Parent::Key Key; |
|
| 756 |
|
|
| 760 |
///\e |
|
| 761 |
typedef typename M1::Key Key; |
|
| 762 |
///\e |
|
| 763 |
typedef typename M1::Value Value; |
|
| 757 | 764 |
|
| 758 | 765 |
/// Constructor |
| 759 | 766 |
ForkMap(M1 &m1, M2 &m2) : _m1(m1), _m2(m2) {}
|
| 760 | 767 |
/// Returns the value associated with the given key in the first map. |
| 761 | 768 |
Value operator[](const Key &k) const { return _m1[k]; }
|
| 762 | 769 |
/// Sets the value associated with the given key in both maps. |
| 763 | 770 |
void set(const Key &k, const Value &v) { _m1.set(k,v); _m2.set(k,v); }
|
| 764 | 771 |
}; |
| 765 | 772 |
|
| 766 | 773 |
/// Returns a \c ForkMap class |
| 767 | 774 |
|
| 768 | 775 |
/// This function just returns a \c ForkMap class. |
| 769 | 776 |
/// \relates ForkMap |
| 770 | 777 |
template <typename M1, typename M2> |
| 771 | 778 |
inline ForkMap<M1,M2> forkMap(M1 &m1, M2 &m2) {
|
| 772 | 779 |
return ForkMap<M1,M2>(m1,m2); |
| 773 | 780 |
} |
| 774 | 781 |
|
| 775 | 782 |
|
| 776 | 783 |
/// Sum of two maps |
| 777 | 784 |
|
| 778 | 785 |
/// This \ref concepts::ReadMap "read-only map" returns the sum |
| 779 | 786 |
/// of the values of the two given maps. |
| 780 | 787 |
/// Its \c Key and \c Value types are inherited from \c M1. |
| 781 | 788 |
/// The \c Key and \c Value of \c M2 must be convertible to those of |
| 782 | 789 |
/// \c M1. |
| 783 | 790 |
/// |
| 784 | 791 |
/// If \c m1 is of type \c M1 and \c m2 is of \c M2, then for |
| 785 | 792 |
/// \code |
| 786 | 793 |
/// AddMap<M1,M2> am(m1,m2); |
| 787 | 794 |
/// \endcode |
| 788 | 795 |
/// <tt>am[x]</tt> will be equal to <tt>m1[x]+m2[x]</tt>. |
| 789 | 796 |
/// |
| 790 | 797 |
/// The simplest way of using this map is through the addMap() |
| 791 | 798 |
/// function. |
| 792 | 799 |
/// |
| 793 | 800 |
/// \sa SubMap, MulMap, DivMap |
| 794 | 801 |
/// \sa ShiftMap, ShiftWriteMap |
| 795 | 802 |
template<typename M1, typename M2> |
| 796 | 803 |
class AddMap : public MapBase<typename M1::Key, typename M1::Value> {
|
| 797 | 804 |
const M1 &_m1; |
| 798 | 805 |
const M2 &_m2; |
| 799 | 806 |
public: |
| 800 |
typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
|
| 801 |
typedef typename Parent::Key Key; |
|
| 802 |
|
|
| 807 |
///\e |
|
| 808 |
typedef typename M1::Key Key; |
|
| 809 |
///\e |
|
| 810 |
typedef typename M1::Value Value; |
|
| 803 | 811 |
|
| 804 | 812 |
/// Constructor |
| 805 | 813 |
AddMap(const M1 &m1, const M2 &m2) : _m1(m1), _m2(m2) {}
|
| 806 |
/// |
|
| 814 |
///\e |
|
| 807 | 815 |
Value operator[](const Key &k) const { return _m1[k]+_m2[k]; }
|
| 808 | 816 |
}; |
| 809 | 817 |
|
| 810 | 818 |
/// Returns an \c AddMap class |
| 811 | 819 |
|
| 812 | 820 |
/// This function just returns an \c AddMap class. |
| 813 | 821 |
/// |
| 814 | 822 |
/// For example, if \c m1 and \c m2 are both maps with \c double |
| 815 | 823 |
/// values, then <tt>addMap(m1,m2)[x]</tt> will be equal to |
| 816 | 824 |
/// <tt>m1[x]+m2[x]</tt>. |
| 817 | 825 |
/// |
| 818 | 826 |
/// \relates AddMap |
| 819 | 827 |
template<typename M1, typename M2> |
| 820 | 828 |
inline AddMap<M1, M2> addMap(const M1 &m1, const M2 &m2) {
|
| 821 | 829 |
return AddMap<M1, M2>(m1,m2); |
| 822 | 830 |
} |
| 823 | 831 |
|
| 824 | 832 |
|
| 825 | 833 |
/// Difference of two maps |
| 826 | 834 |
|
| 827 | 835 |
/// This \ref concepts::ReadMap "read-only map" returns the difference |
| 828 | 836 |
/// of the values of the two given maps. |
| 829 | 837 |
/// Its \c Key and \c Value types are inherited from \c M1. |
| 830 | 838 |
/// The \c Key and \c Value of \c M2 must be convertible to those of |
| 831 | 839 |
/// \c M1. |
| 832 | 840 |
/// |
| 833 | 841 |
/// If \c m1 is of type \c M1 and \c m2 is of \c M2, then for |
| 834 | 842 |
/// \code |
| 835 | 843 |
/// SubMap<M1,M2> sm(m1,m2); |
| 836 | 844 |
/// \endcode |
| 837 | 845 |
/// <tt>sm[x]</tt> will be equal to <tt>m1[x]-m2[x]</tt>. |
| 838 | 846 |
/// |
| 839 | 847 |
/// The simplest way of using this map is through the subMap() |
| 840 | 848 |
/// function. |
| 841 | 849 |
/// |
| 842 | 850 |
/// \sa AddMap, MulMap, DivMap |
| 843 | 851 |
template<typename M1, typename M2> |
| 844 | 852 |
class SubMap : public MapBase<typename M1::Key, typename M1::Value> {
|
| 845 | 853 |
const M1 &_m1; |
| 846 | 854 |
const M2 &_m2; |
| 847 | 855 |
public: |
| 848 |
typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
|
| 849 |
typedef typename Parent::Key Key; |
|
| 850 |
|
|
| 856 |
///\e |
|
| 857 |
typedef typename M1::Key Key; |
|
| 858 |
///\e |
|
| 859 |
typedef typename M1::Value Value; |
|
| 851 | 860 |
|
| 852 | 861 |
/// Constructor |
| 853 | 862 |
SubMap(const M1 &m1, const M2 &m2) : _m1(m1), _m2(m2) {}
|
| 854 |
/// |
|
| 863 |
///\e |
|
| 855 | 864 |
Value operator[](const Key &k) const { return _m1[k]-_m2[k]; }
|
| 856 | 865 |
}; |
| 857 | 866 |
|
| 858 | 867 |
/// Returns a \c SubMap class |
| 859 | 868 |
|
| 860 | 869 |
/// This function just returns a \c SubMap class. |
| 861 | 870 |
/// |
| 862 | 871 |
/// For example, if \c m1 and \c m2 are both maps with \c double |
| 863 | 872 |
/// values, then <tt>subMap(m1,m2)[x]</tt> will be equal to |
| 864 | 873 |
/// <tt>m1[x]-m2[x]</tt>. |
| 865 | 874 |
/// |
| 866 | 875 |
/// \relates SubMap |
| 867 | 876 |
template<typename M1, typename M2> |
| 868 | 877 |
inline SubMap<M1, M2> subMap(const M1 &m1, const M2 &m2) {
|
| 869 | 878 |
return SubMap<M1, M2>(m1,m2); |
| 870 | 879 |
} |
| 871 | 880 |
|
| 872 | 881 |
|
| 873 | 882 |
/// Product of two maps |
| 874 | 883 |
|
| 875 | 884 |
/// This \ref concepts::ReadMap "read-only map" returns the product |
| 876 | 885 |
/// of the values of the two given maps. |
| 877 | 886 |
/// Its \c Key and \c Value types are inherited from \c M1. |
| 878 | 887 |
/// The \c Key and \c Value of \c M2 must be convertible to those of |
| 879 | 888 |
/// \c M1. |
| 880 | 889 |
/// |
| 881 | 890 |
/// If \c m1 is of type \c M1 and \c m2 is of \c M2, then for |
| 882 | 891 |
/// \code |
| 883 | 892 |
/// MulMap<M1,M2> mm(m1,m2); |
| 884 | 893 |
/// \endcode |
| 885 | 894 |
/// <tt>mm[x]</tt> will be equal to <tt>m1[x]*m2[x]</tt>. |
| 886 | 895 |
/// |
| 887 | 896 |
/// The simplest way of using this map is through the mulMap() |
| 888 | 897 |
/// function. |
| 889 | 898 |
/// |
| 890 | 899 |
/// \sa AddMap, SubMap, DivMap |
| 891 | 900 |
/// \sa ScaleMap, ScaleWriteMap |
| 892 | 901 |
template<typename M1, typename M2> |
| 893 | 902 |
class MulMap : public MapBase<typename M1::Key, typename M1::Value> {
|
| 894 | 903 |
const M1 &_m1; |
| 895 | 904 |
const M2 &_m2; |
| 896 | 905 |
public: |
| 897 |
typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
|
| 898 |
typedef typename Parent::Key Key; |
|
| 899 |
|
|
| 906 |
///\e |
|
| 907 |
typedef typename M1::Key Key; |
|
| 908 |
///\e |
|
| 909 |
typedef typename M1::Value Value; |
|
| 900 | 910 |
|
| 901 | 911 |
/// Constructor |
| 902 | 912 |
MulMap(const M1 &m1,const M2 &m2) : _m1(m1), _m2(m2) {}
|
| 903 |
/// |
|
| 913 |
///\e |
|
| 904 | 914 |
Value operator[](const Key &k) const { return _m1[k]*_m2[k]; }
|
| 905 | 915 |
}; |
| 906 | 916 |
|
| 907 | 917 |
/// Returns a \c MulMap class |
| 908 | 918 |
|
| 909 | 919 |
/// This function just returns a \c MulMap class. |
| 910 | 920 |
/// |
| 911 | 921 |
/// For example, if \c m1 and \c m2 are both maps with \c double |
| 912 | 922 |
/// values, then <tt>mulMap(m1,m2)[x]</tt> will be equal to |
| 913 | 923 |
/// <tt>m1[x]*m2[x]</tt>. |
| 914 | 924 |
/// |
| 915 | 925 |
/// \relates MulMap |
| 916 | 926 |
template<typename M1, typename M2> |
| 917 | 927 |
inline MulMap<M1, M2> mulMap(const M1 &m1,const M2 &m2) {
|
| 918 | 928 |
return MulMap<M1, M2>(m1,m2); |
| 919 | 929 |
} |
| 920 | 930 |
|
| 921 | 931 |
|
| 922 | 932 |
/// Quotient of two maps |
| 923 | 933 |
|
| 924 | 934 |
/// This \ref concepts::ReadMap "read-only map" returns the quotient |
| 925 | 935 |
/// of the values of the two given maps. |
| 926 | 936 |
/// Its \c Key and \c Value types are inherited from \c M1. |
| 927 | 937 |
/// The \c Key and \c Value of \c M2 must be convertible to those of |
| 928 | 938 |
/// \c M1. |
| 929 | 939 |
/// |
| 930 | 940 |
/// If \c m1 is of type \c M1 and \c m2 is of \c M2, then for |
| 931 | 941 |
/// \code |
| 932 | 942 |
/// DivMap<M1,M2> dm(m1,m2); |
| 933 | 943 |
/// \endcode |
| 934 | 944 |
/// <tt>dm[x]</tt> will be equal to <tt>m1[x]/m2[x]</tt>. |
| 935 | 945 |
/// |
| 936 | 946 |
/// The simplest way of using this map is through the divMap() |
| 937 | 947 |
/// function. |
| 938 | 948 |
/// |
| 939 | 949 |
/// \sa AddMap, SubMap, MulMap |
| 940 | 950 |
template<typename M1, typename M2> |
| 941 | 951 |
class DivMap : public MapBase<typename M1::Key, typename M1::Value> {
|
| 942 | 952 |
const M1 &_m1; |
| 943 | 953 |
const M2 &_m2; |
| 944 | 954 |
public: |
| 945 |
typedef MapBase<typename M1::Key, typename M1::Value> Parent; |
|
| 946 |
typedef typename Parent::Key Key; |
|
| 947 |
|
|
| 955 |
///\e |
|
| 956 |
typedef typename M1::Key Key; |
|
| 957 |
///\e |
|
| 958 |
typedef typename M1::Value Value; |
|
| 948 | 959 |
|
| 949 | 960 |
/// Constructor |
| 950 | 961 |
DivMap(const M1 &m1,const M2 &m2) : _m1(m1), _m2(m2) {}
|
| 951 |
/// |
|
| 962 |
///\e |
|
| 952 | 963 |
Value operator[](const Key &k) const { return _m1[k]/_m2[k]; }
|
| 953 | 964 |
}; |
| 954 | 965 |
|
| 955 | 966 |
/// Returns a \c DivMap class |
| 956 | 967 |
|
| 957 | 968 |
/// This function just returns a \c DivMap class. |
| 958 | 969 |
/// |
| 959 | 970 |
/// For example, if \c m1 and \c m2 are both maps with \c double |
| 960 | 971 |
/// values, then <tt>divMap(m1,m2)[x]</tt> will be equal to |
| 961 | 972 |
/// <tt>m1[x]/m2[x]</tt>. |
| 962 | 973 |
/// |
| 963 | 974 |
/// \relates DivMap |
| 964 | 975 |
template<typename M1, typename M2> |
| 965 | 976 |
inline DivMap<M1, M2> divMap(const M1 &m1,const M2 &m2) {
|
| 966 | 977 |
return DivMap<M1, M2>(m1,m2); |
| 967 | 978 |
} |
| 968 | 979 |
|
| 969 | 980 |
|
| 970 | 981 |
/// Shifts a map with a constant. |
| 971 | 982 |
|
| 972 | 983 |
/// This \ref concepts::ReadMap "read-only map" returns the sum of |
| 973 | 984 |
/// the given map and a constant value (i.e. it shifts the map with |
| 974 | 985 |
/// the constant). Its \c Key and \c Value are inherited from \c M. |
| 975 | 986 |
/// |
| 976 | 987 |
/// Actually, |
| 977 | 988 |
/// \code |
| 978 | 989 |
/// ShiftMap<M> sh(m,v); |
| 979 | 990 |
/// \endcode |
| 980 | 991 |
/// is equivalent to |
| 981 | 992 |
/// \code |
| 982 | 993 |
/// ConstMap<M::Key, M::Value> cm(v); |
| 983 | 994 |
/// AddMap<M, ConstMap<M::Key, M::Value> > sh(m,cm); |
| 984 | 995 |
/// \endcode |
| 985 | 996 |
/// |
| 986 | 997 |
/// The simplest way of using this map is through the shiftMap() |
| 987 | 998 |
/// function. |
| 988 | 999 |
/// |
| 989 | 1000 |
/// \sa ShiftWriteMap |
| 990 | 1001 |
template<typename M, typename C = typename M::Value> |
| 991 | 1002 |
class ShiftMap : public MapBase<typename M::Key, typename M::Value> {
|
| 992 | 1003 |
const M &_m; |
| 993 | 1004 |
C _v; |
| 994 | 1005 |
public: |
| 995 |
typedef MapBase<typename M::Key, typename M::Value> Parent; |
|
| 996 |
typedef typename Parent::Key Key; |
|
| 997 |
|
|
| 1006 |
///\e |
|
| 1007 |
typedef typename M::Key Key; |
|
| 1008 |
///\e |
|
| 1009 |
typedef typename M::Value Value; |
|
| 998 | 1010 |
|
| 999 | 1011 |
/// Constructor |
| 1000 | 1012 |
|
| 1001 | 1013 |
/// Constructor. |
| 1002 | 1014 |
/// \param m The undelying map. |
| 1003 | 1015 |
/// \param v The constant value. |
| 1004 | 1016 |
ShiftMap(const M &m, const C &v) : _m(m), _v(v) {}
|
| 1005 |
/// |
|
| 1017 |
///\e |
|
| 1006 | 1018 |
Value operator[](const Key &k) const { return _m[k]+_v; }
|
| 1007 | 1019 |
}; |
| 1008 | 1020 |
|
| 1009 | 1021 |
/// Shifts a map with a constant (read-write version). |
| 1010 | 1022 |
|
| 1011 | 1023 |
/// This \ref concepts::ReadWriteMap "read-write map" returns the sum |
| 1012 | 1024 |
/// of the given map and a constant value (i.e. it shifts the map with |
| 1013 | 1025 |
/// the constant). Its \c Key and \c Value are inherited from \c M. |
| 1014 | 1026 |
/// It makes also possible to write the map. |
| 1015 | 1027 |
/// |
| 1016 | 1028 |
/// The simplest way of using this map is through the shiftWriteMap() |
| 1017 | 1029 |
/// function. |
| 1018 | 1030 |
/// |
| 1019 | 1031 |
/// \sa ShiftMap |
| 1020 | 1032 |
template<typename M, typename C = typename M::Value> |
| 1021 | 1033 |
class ShiftWriteMap : public MapBase<typename M::Key, typename M::Value> {
|
| 1022 | 1034 |
M &_m; |
| 1023 | 1035 |
C _v; |
| 1024 | 1036 |
public: |
| 1025 |
typedef MapBase<typename M::Key, typename M::Value> Parent; |
|
| 1026 |
typedef typename Parent::Key Key; |
|
| 1027 |
|
|
| 1037 |
///\e |
|
| 1038 |
typedef typename M::Key Key; |
|
| 1039 |
///\e |
|
| 1040 |
typedef typename M::Value Value; |
|
| 1028 | 1041 |
|
| 1029 | 1042 |
/// Constructor |
| 1030 | 1043 |
|
| 1031 | 1044 |
/// Constructor. |
| 1032 | 1045 |
/// \param m The undelying map. |
| 1033 | 1046 |
/// \param v The constant value. |
| 1034 | 1047 |
ShiftWriteMap(M &m, const C &v) : _m(m), _v(v) {}
|
| 1035 |
/// |
|
| 1048 |
///\e |
|
| 1036 | 1049 |
Value operator[](const Key &k) const { return _m[k]+_v; }
|
| 1037 |
/// |
|
| 1050 |
///\e |
|
| 1038 | 1051 |
void set(const Key &k, const Value &v) { _m.set(k, v-_v); }
|
| 1039 | 1052 |
}; |
| 1040 | 1053 |
|
| 1041 | 1054 |
/// Returns a \c ShiftMap class |
| 1042 | 1055 |
|
| 1043 | 1056 |
/// This function just returns a \c ShiftMap class. |
| 1044 | 1057 |
/// |
| 1045 | 1058 |
/// For example, if \c m is a map with \c double values and \c v is |
| 1046 | 1059 |
/// \c double, then <tt>shiftMap(m,v)[x]</tt> will be equal to |
| 1047 | 1060 |
/// <tt>m[x]+v</tt>. |
| 1048 | 1061 |
/// |
| 1049 | 1062 |
/// \relates ShiftMap |
| 1050 | 1063 |
template<typename M, typename C> |
| 1051 | 1064 |
inline ShiftMap<M, C> shiftMap(const M &m, const C &v) {
|
| 1052 | 1065 |
return ShiftMap<M, C>(m,v); |
| 1053 | 1066 |
} |
| 1054 | 1067 |
|
| 1055 | 1068 |
/// Returns a \c ShiftWriteMap class |
| 1056 | 1069 |
|
| 1057 | 1070 |
/// This function just returns a \c ShiftWriteMap class. |
| 1058 | 1071 |
/// |
| 1059 | 1072 |
/// For example, if \c m is a map with \c double values and \c v is |
| 1060 | 1073 |
/// \c double, then <tt>shiftWriteMap(m,v)[x]</tt> will be equal to |
| 1061 | 1074 |
/// <tt>m[x]+v</tt>. |
| 1062 | 1075 |
/// Moreover it makes also possible to write the map. |
| 1063 | 1076 |
/// |
| 1064 | 1077 |
/// \relates ShiftWriteMap |
| 1065 | 1078 |
template<typename M, typename C> |
| 1066 | 1079 |
inline ShiftWriteMap<M, C> shiftWriteMap(M &m, const C &v) {
|
| 1067 | 1080 |
return ShiftWriteMap<M, C>(m,v); |
| 1068 | 1081 |
} |
| 1069 | 1082 |
|
| 1070 | 1083 |
|
| 1071 | 1084 |
/// Scales a map with a constant. |
| 1072 | 1085 |
|
| 1073 | 1086 |
/// This \ref concepts::ReadMap "read-only map" returns the value of |
| 1074 | 1087 |
/// the given map multiplied from the left side with a constant value. |
| 1075 | 1088 |
/// Its \c Key and \c Value are inherited from \c M. |
| 1076 | 1089 |
/// |
| 1077 | 1090 |
/// Actually, |
| 1078 | 1091 |
/// \code |
| 1079 | 1092 |
/// ScaleMap<M> sc(m,v); |
| 1080 | 1093 |
/// \endcode |
| 1081 | 1094 |
/// is equivalent to |
| 1082 | 1095 |
/// \code |
| 1083 | 1096 |
/// ConstMap<M::Key, M::Value> cm(v); |
| 1084 | 1097 |
/// MulMap<ConstMap<M::Key, M::Value>, M> sc(cm,m); |
| 1085 | 1098 |
/// \endcode |
| 1086 | 1099 |
/// |
| 1087 | 1100 |
/// The simplest way of using this map is through the scaleMap() |
| 1088 | 1101 |
/// function. |
| 1089 | 1102 |
/// |
| 1090 | 1103 |
/// \sa ScaleWriteMap |
| 1091 | 1104 |
template<typename M, typename C = typename M::Value> |
| 1092 | 1105 |
class ScaleMap : public MapBase<typename M::Key, typename M::Value> {
|
| 1093 | 1106 |
const M &_m; |
| 1094 | 1107 |
C _v; |
| 1095 | 1108 |
public: |
| 1096 |
typedef MapBase<typename M::Key, typename M::Value> Parent; |
|
| 1097 |
typedef typename Parent::Key Key; |
|
| 1098 |
|
|
| 1109 |
///\e |
|
| 1110 |
typedef typename M::Key Key; |
|
| 1111 |
///\e |
|
| 1112 |
typedef typename M::Value Value; |
|
| 1099 | 1113 |
|
| 1100 | 1114 |
/// Constructor |
| 1101 | 1115 |
|
| 1102 | 1116 |
/// Constructor. |
| 1103 | 1117 |
/// \param m The undelying map. |
| 1104 | 1118 |
/// \param v The constant value. |
| 1105 | 1119 |
ScaleMap(const M &m, const C &v) : _m(m), _v(v) {}
|
| 1106 |
/// |
|
| 1120 |
///\e |
|
| 1107 | 1121 |
Value operator[](const Key &k) const { return _v*_m[k]; }
|
| 1108 | 1122 |
}; |
| 1109 | 1123 |
|
| 1110 | 1124 |
/// Scales a map with a constant (read-write version). |
| 1111 | 1125 |
|
| 1112 | 1126 |
/// This \ref concepts::ReadWriteMap "read-write map" returns the value of |
| 1113 | 1127 |
/// the given map multiplied from the left side with a constant value. |
| 1114 | 1128 |
/// Its \c Key and \c Value are inherited from \c M. |
| 1115 | 1129 |
/// It can also be used as write map if the \c / operator is defined |
| 1116 | 1130 |
/// between \c Value and \c C and the given multiplier is not zero. |
| 1117 | 1131 |
/// |
| 1118 | 1132 |
/// The simplest way of using this map is through the scaleWriteMap() |
| 1119 | 1133 |
/// function. |
| 1120 | 1134 |
/// |
| 1121 | 1135 |
/// \sa ScaleMap |
| 1122 | 1136 |
template<typename M, typename C = typename M::Value> |
| 1123 | 1137 |
class ScaleWriteMap : public MapBase<typename M::Key, typename M::Value> {
|
| 1124 | 1138 |
M &_m; |
| 1125 | 1139 |
C _v; |
| 1126 | 1140 |
public: |
| 1127 |
typedef MapBase<typename M::Key, typename M::Value> Parent; |
|
| 1128 |
typedef typename Parent::Key Key; |
|
| 1129 |
|
|
| 1141 |
///\e |
|
| 1142 |
typedef typename M::Key Key; |
|
| 1143 |
///\e |
|
| 1144 |
typedef typename M::Value Value; |
|
| 1130 | 1145 |
|
| 1131 | 1146 |
/// Constructor |
| 1132 | 1147 |
|
| 1133 | 1148 |
/// Constructor. |
| 1134 | 1149 |
/// \param m The undelying map. |
| 1135 | 1150 |
/// \param v The constant value. |
| 1136 | 1151 |
ScaleWriteMap(M &m, const C &v) : _m(m), _v(v) {}
|
| 1137 |
/// |
|
| 1152 |
///\e |
|
| 1138 | 1153 |
Value operator[](const Key &k) const { return _v*_m[k]; }
|
| 1139 |
/// |
|
| 1154 |
///\e |
|
| 1140 | 1155 |
void set(const Key &k, const Value &v) { _m.set(k, v/_v); }
|
| 1141 | 1156 |
}; |
| 1142 | 1157 |
|
| 1143 | 1158 |
/// Returns a \c ScaleMap class |
| 1144 | 1159 |
|
| 1145 | 1160 |
/// This function just returns a \c ScaleMap class. |
| 1146 | 1161 |
/// |
| 1147 | 1162 |
/// For example, if \c m is a map with \c double values and \c v is |
| 1148 | 1163 |
/// \c double, then <tt>scaleMap(m,v)[x]</tt> will be equal to |
| 1149 | 1164 |
/// <tt>v*m[x]</tt>. |
| 1150 | 1165 |
/// |
| 1151 | 1166 |
/// \relates ScaleMap |
| 1152 | 1167 |
template<typename M, typename C> |
| 1153 | 1168 |
inline ScaleMap<M, C> scaleMap(const M &m, const C &v) {
|
| 1154 | 1169 |
return ScaleMap<M, C>(m,v); |
| 1155 | 1170 |
} |
| 1156 | 1171 |
|
| 1157 | 1172 |
/// Returns a \c ScaleWriteMap class |
| 1158 | 1173 |
|
| 1159 | 1174 |
/// This function just returns a \c ScaleWriteMap class. |
| 1160 | 1175 |
/// |
| 1161 | 1176 |
/// For example, if \c m is a map with \c double values and \c v is |
| 1162 | 1177 |
/// \c double, then <tt>scaleWriteMap(m,v)[x]</tt> will be equal to |
| 1163 | 1178 |
/// <tt>v*m[x]</tt>. |
| 1164 | 1179 |
/// Moreover it makes also possible to write the map. |
| 1165 | 1180 |
/// |
| 1166 | 1181 |
/// \relates ScaleWriteMap |
| 1167 | 1182 |
template<typename M, typename C> |
| 1168 | 1183 |
inline ScaleWriteMap<M, C> scaleWriteMap(M &m, const C &v) {
|
| 1169 | 1184 |
return ScaleWriteMap<M, C>(m,v); |
| 1170 | 1185 |
} |
| 1171 | 1186 |
|
| 1172 | 1187 |
|
| 1173 | 1188 |
/// Negative of a map |
| 1174 | 1189 |
|
| 1175 | 1190 |
/// This \ref concepts::ReadMap "read-only map" returns the negative |
| 1176 | 1191 |
/// of the values of the given map (using the unary \c - operator). |
| 1177 | 1192 |
/// Its \c Key and \c Value are inherited from \c M. |
| 1178 | 1193 |
/// |
| 1179 | 1194 |
/// If M::Value is \c int, \c double etc., then |
| 1180 | 1195 |
/// \code |
| 1181 | 1196 |
/// NegMap<M> neg(m); |
| 1182 | 1197 |
/// \endcode |
| 1183 | 1198 |
/// is equivalent to |
| 1184 | 1199 |
/// \code |
| 1185 | 1200 |
/// ScaleMap<M> neg(m,-1); |
| 1186 | 1201 |
/// \endcode |
| 1187 | 1202 |
/// |
| 1188 | 1203 |
/// The simplest way of using this map is through the negMap() |
| 1189 | 1204 |
/// function. |
| 1190 | 1205 |
/// |
| 1191 | 1206 |
/// \sa NegWriteMap |
| 1192 | 1207 |
template<typename M> |
| 1193 | 1208 |
class NegMap : public MapBase<typename M::Key, typename M::Value> {
|
| 1194 | 1209 |
const M& _m; |
| 1195 | 1210 |
public: |
| 1196 |
typedef MapBase<typename M::Key, typename M::Value> Parent; |
|
| 1197 |
typedef typename Parent::Key Key; |
|
| 1198 |
|
|
| 1211 |
///\e |
|
| 1212 |
typedef typename M::Key Key; |
|
| 1213 |
///\e |
|
| 1214 |
typedef typename M::Value Value; |
|
| 1199 | 1215 |
|
| 1200 | 1216 |
/// Constructor |
| 1201 | 1217 |
NegMap(const M &m) : _m(m) {}
|
| 1202 |
/// |
|
| 1218 |
///\e |
|
| 1203 | 1219 |
Value operator[](const Key &k) const { return -_m[k]; }
|
| 1204 | 1220 |
}; |
| 1205 | 1221 |
|
| 1206 | 1222 |
/// Negative of a map (read-write version) |
| 1207 | 1223 |
|
| 1208 | 1224 |
/// This \ref concepts::ReadWriteMap "read-write map" returns the |
| 1209 | 1225 |
/// negative of the values of the given map (using the unary \c - |
| 1210 | 1226 |
/// operator). |
| 1211 | 1227 |
/// Its \c Key and \c Value are inherited from \c M. |
| 1212 | 1228 |
/// It makes also possible to write the map. |
| 1213 | 1229 |
/// |
| 1214 | 1230 |
/// If M::Value is \c int, \c double etc., then |
| 1215 | 1231 |
/// \code |
| 1216 | 1232 |
/// NegWriteMap<M> neg(m); |
| 1217 | 1233 |
/// \endcode |
| 1218 | 1234 |
/// is equivalent to |
| 1219 | 1235 |
/// \code |
| 1220 | 1236 |
/// ScaleWriteMap<M> neg(m,-1); |
| 1221 | 1237 |
/// \endcode |
| 1222 | 1238 |
/// |
| 1223 | 1239 |
/// The simplest way of using this map is through the negWriteMap() |
| 1224 | 1240 |
/// function. |
| 1225 | 1241 |
/// |
| 1226 | 1242 |
/// \sa NegMap |
| 1227 | 1243 |
template<typename M> |
| 1228 | 1244 |
class NegWriteMap : public MapBase<typename M::Key, typename M::Value> {
|
| 1229 | 1245 |
M &_m; |
| 1230 | 1246 |
public: |
| 1231 |
typedef MapBase<typename M::Key, typename M::Value> Parent; |
|
| 1232 |
typedef typename Parent::Key Key; |
|
| 1233 |
|
|
| 1247 |
///\e |
|
| 1248 |
typedef typename M::Key Key; |
|
| 1249 |
///\e |
|
| 1250 |
typedef typename M::Value Value; |
|
| 1234 | 1251 |
|
| 1235 | 1252 |
/// Constructor |
| 1236 | 1253 |
NegWriteMap(M &m) : _m(m) {}
|
| 1237 |
/// |
|
| 1254 |
///\e |
|
| 1238 | 1255 |
Value operator[](const Key &k) const { return -_m[k]; }
|
| 1239 |
/// |
|
| 1256 |
///\e |
|
| 1240 | 1257 |
void set(const Key &k, const Value &v) { _m.set(k, -v); }
|
| 1241 | 1258 |
}; |
| 1242 | 1259 |
|
| 1243 | 1260 |
/// Returns a \c NegMap class |
| 1244 | 1261 |
|
| 1245 | 1262 |
/// This function just returns a \c NegMap class. |
| 1246 | 1263 |
/// |
| 1247 | 1264 |
/// For example, if \c m is a map with \c double values, then |
| 1248 | 1265 |
/// <tt>negMap(m)[x]</tt> will be equal to <tt>-m[x]</tt>. |
| 1249 | 1266 |
/// |
| 1250 | 1267 |
/// \relates NegMap |
| 1251 | 1268 |
template <typename M> |
| 1252 | 1269 |
inline NegMap<M> negMap(const M &m) {
|
| 1253 | 1270 |
return NegMap<M>(m); |
| 1254 | 1271 |
} |
| 1255 | 1272 |
|
| 1256 | 1273 |
/// Returns a \c NegWriteMap class |
| 1257 | 1274 |
|
| 1258 | 1275 |
/// This function just returns a \c NegWriteMap class. |
| 1259 | 1276 |
/// |
| 1260 | 1277 |
/// For example, if \c m is a map with \c double values, then |
| 1261 | 1278 |
/// <tt>negWriteMap(m)[x]</tt> will be equal to <tt>-m[x]</tt>. |
| 1262 | 1279 |
/// Moreover it makes also possible to write the map. |
| 1263 | 1280 |
/// |
| 1264 | 1281 |
/// \relates NegWriteMap |
| 1265 | 1282 |
template <typename M> |
| 1266 | 1283 |
inline NegWriteMap<M> negWriteMap(M &m) {
|
| 1267 | 1284 |
return NegWriteMap<M>(m); |
| 1268 | 1285 |
} |
| 1269 | 1286 |
|
| 1270 | 1287 |
|
| 1271 | 1288 |
/// Absolute value of a map |
| 1272 | 1289 |
|
| 1273 | 1290 |
/// This \ref concepts::ReadMap "read-only map" returns the absolute |
| 1274 | 1291 |
/// value of the values of the given map. |
| 1275 | 1292 |
/// Its \c Key and \c Value are inherited from \c M. |
| 1276 | 1293 |
/// \c Value must be comparable to \c 0 and the unary \c - |
| 1277 | 1294 |
/// operator must be defined for it, of course. |
| 1278 | 1295 |
/// |
| 1279 | 1296 |
/// The simplest way of using this map is through the absMap() |
| 1280 | 1297 |
/// function. |
| 1281 | 1298 |
template<typename M> |
| 1282 | 1299 |
class AbsMap : public MapBase<typename M::Key, typename M::Value> {
|
| 1283 | 1300 |
const M &_m; |
| 1284 | 1301 |
public: |
| 1285 |
typedef MapBase<typename M::Key, typename M::Value> Parent; |
|
| 1286 |
typedef typename Parent::Key Key; |
|
| 1287 |
|
|
| 1302 |
///\e |
|
| 1303 |
typedef typename M::Key Key; |
|
| 1304 |
///\e |
|
| 1305 |
typedef typename M::Value Value; |
|
| 1288 | 1306 |
|
| 1289 | 1307 |
/// Constructor |
| 1290 | 1308 |
AbsMap(const M &m) : _m(m) {}
|
| 1291 |
/// |
|
| 1309 |
///\e |
|
| 1292 | 1310 |
Value operator[](const Key &k) const {
|
| 1293 | 1311 |
Value tmp = _m[k]; |
| 1294 | 1312 |
return tmp >= 0 ? tmp : -tmp; |
| 1295 | 1313 |
} |
| 1296 | 1314 |
|
| 1297 | 1315 |
}; |
| 1298 | 1316 |
|
| 1299 | 1317 |
/// Returns an \c AbsMap class |
| 1300 | 1318 |
|
| 1301 | 1319 |
/// This function just returns an \c AbsMap class. |
| 1302 | 1320 |
/// |
| 1303 | 1321 |
/// For example, if \c m is a map with \c double values, then |
| 1304 | 1322 |
/// <tt>absMap(m)[x]</tt> will be equal to <tt>m[x]</tt> if |
| 1305 | 1323 |
/// it is positive or zero and <tt>-m[x]</tt> if <tt>m[x]</tt> is |
| 1306 | 1324 |
/// negative. |
| 1307 | 1325 |
/// |
| 1308 | 1326 |
/// \relates AbsMap |
| 1309 | 1327 |
template<typename M> |
| 1310 | 1328 |
inline AbsMap<M> absMap(const M &m) {
|
| 1311 | 1329 |
return AbsMap<M>(m); |
| 1312 | 1330 |
} |
| 1313 | 1331 |
|
| 1314 | 1332 |
/// @} |
| 1315 | 1333 |
|
| 1316 | 1334 |
// Logical maps and map adaptors: |
| 1317 | 1335 |
|
| 1318 | 1336 |
/// \addtogroup maps |
| 1319 | 1337 |
/// @{
|
| 1320 | 1338 |
|
| 1321 | 1339 |
/// Constant \c true map. |
| 1322 | 1340 |
|
| 1323 | 1341 |
/// This \ref concepts::ReadMap "read-only map" assigns \c true to |
| 1324 | 1342 |
/// each key. |
| 1325 | 1343 |
/// |
| 1326 | 1344 |
/// Note that |
| 1327 | 1345 |
/// \code |
| 1328 | 1346 |
/// TrueMap<K> tm; |
| 1329 | 1347 |
/// \endcode |
| 1330 | 1348 |
/// is equivalent to |
| 1331 | 1349 |
/// \code |
| 1332 | 1350 |
/// ConstMap<K,bool> tm(true); |
| 1333 | 1351 |
/// \endcode |
| 1334 | 1352 |
/// |
| 1335 | 1353 |
/// \sa FalseMap |
| 1336 | 1354 |
/// \sa ConstMap |
| 1337 | 1355 |
template <typename K> |
| 1338 | 1356 |
class TrueMap : public MapBase<K, bool> {
|
| 1339 | 1357 |
public: |
| 1340 |
typedef MapBase<K, bool> Parent; |
|
| 1341 |
typedef typename Parent::Key Key; |
|
| 1342 |
|
|
| 1358 |
///\e |
|
| 1359 |
typedef K Key; |
|
| 1360 |
///\e |
|
| 1361 |
typedef bool Value; |
|
| 1343 | 1362 |
|
| 1344 | 1363 |
/// Gives back \c true. |
| 1345 | 1364 |
Value operator[](const Key&) const { return true; }
|
| 1346 | 1365 |
}; |
| 1347 | 1366 |
|
| 1348 | 1367 |
/// Returns a \c TrueMap class |
| 1349 | 1368 |
|
| 1350 | 1369 |
/// This function just returns a \c TrueMap class. |
| 1351 | 1370 |
/// \relates TrueMap |
| 1352 | 1371 |
template<typename K> |
| 1353 | 1372 |
inline TrueMap<K> trueMap() {
|
| 1354 | 1373 |
return TrueMap<K>(); |
| 1355 | 1374 |
} |
| 1356 | 1375 |
|
| 1357 | 1376 |
|
| 1358 | 1377 |
/// Constant \c false map. |
| 1359 | 1378 |
|
| 1360 | 1379 |
/// This \ref concepts::ReadMap "read-only map" assigns \c false to |
| 1361 | 1380 |
/// each key. |
| 1362 | 1381 |
/// |
| 1363 | 1382 |
/// Note that |
| 1364 | 1383 |
/// \code |
| 1365 | 1384 |
/// FalseMap<K> fm; |
| 1366 | 1385 |
/// \endcode |
| 1367 | 1386 |
/// is equivalent to |
| 1368 | 1387 |
/// \code |
| 1369 | 1388 |
/// ConstMap<K,bool> fm(false); |
| 1370 | 1389 |
/// \endcode |
| 1371 | 1390 |
/// |
| 1372 | 1391 |
/// \sa TrueMap |
| 1373 | 1392 |
/// \sa ConstMap |
| 1374 | 1393 |
template <typename K> |
| 1375 | 1394 |
class FalseMap : public MapBase<K, bool> {
|
| 1376 | 1395 |
public: |
| 1377 |
typedef MapBase<K, bool> Parent; |
|
| 1378 |
typedef typename Parent::Key Key; |
|
| 1379 |
|
|
| 1396 |
///\e |
|
| 1397 |
typedef K Key; |
|
| 1398 |
///\e |
|
| 1399 |
typedef bool Value; |
|
| 1380 | 1400 |
|
| 1381 | 1401 |
/// Gives back \c false. |
| 1382 | 1402 |
Value operator[](const Key&) const { return false; }
|
| 1383 | 1403 |
}; |
| 1384 | 1404 |
|
| 1385 | 1405 |
/// Returns a \c FalseMap class |
| 1386 | 1406 |
|
| 1387 | 1407 |
/// This function just returns a \c FalseMap class. |
| 1388 | 1408 |
/// \relates FalseMap |
| 1389 | 1409 |
template<typename K> |
| 1390 | 1410 |
inline FalseMap<K> falseMap() {
|
| 1391 | 1411 |
return FalseMap<K>(); |
| 1392 | 1412 |
} |
| 1393 | 1413 |
|
| 1394 | 1414 |
/// @} |
| 1395 | 1415 |
|
| 1396 | 1416 |
/// \addtogroup map_adaptors |
| 1397 | 1417 |
/// @{
|
| 1398 | 1418 |
|
| 1399 | 1419 |
/// Logical 'and' of two maps |
| 1400 | 1420 |
|
| 1401 | 1421 |
/// This \ref concepts::ReadMap "read-only map" returns the logical |
| 1402 | 1422 |
/// 'and' of the values of the two given maps. |
| 1403 | 1423 |
/// Its \c Key type is inherited from \c M1 and its \c Value type is |
| 1404 | 1424 |
/// \c bool. \c M2::Key must be convertible to \c M1::Key. |
| 1405 | 1425 |
/// |
| 1406 | 1426 |
/// If \c m1 is of type \c M1 and \c m2 is of \c M2, then for |
| 1407 | 1427 |
/// \code |
| 1408 | 1428 |
/// AndMap<M1,M2> am(m1,m2); |
| 1409 | 1429 |
/// \endcode |
| 1410 | 1430 |
/// <tt>am[x]</tt> will be equal to <tt>m1[x]&&m2[x]</tt>. |
| 1411 | 1431 |
/// |
| 1412 | 1432 |
/// The simplest way of using this map is through the andMap() |
| 1413 | 1433 |
/// function. |
| 1414 | 1434 |
/// |
| 1415 | 1435 |
/// \sa OrMap |
| 1416 | 1436 |
/// \sa NotMap, NotWriteMap |
| 1417 | 1437 |
template<typename M1, typename M2> |
| 1418 | 1438 |
class AndMap : public MapBase<typename M1::Key, bool> {
|
| 1419 | 1439 |
const M1 &_m1; |
| 1420 | 1440 |
const M2 &_m2; |
| 1421 | 1441 |
public: |
| 1422 |
typedef MapBase<typename M1::Key, bool> Parent; |
|
| 1423 |
typedef typename Parent::Key Key; |
|
| 1424 |
|
|
| 1442 |
///\e |
|
| 1443 |
typedef typename M1::Key Key; |
|
| 1444 |
///\e |
|
| 1445 |
typedef bool Value; |
|
| 1425 | 1446 |
|
| 1426 | 1447 |
/// Constructor |
| 1427 | 1448 |
AndMap(const M1 &m1, const M2 &m2) : _m1(m1), _m2(m2) {}
|
| 1428 |
/// |
|
| 1449 |
///\e |
|
| 1429 | 1450 |
Value operator[](const Key &k) const { return _m1[k]&&_m2[k]; }
|
| 1430 | 1451 |
}; |
| 1431 | 1452 |
|
| 1432 | 1453 |
/// Returns an \c AndMap class |
| 1433 | 1454 |
|
| 1434 | 1455 |
/// This function just returns an \c AndMap class. |
| 1435 | 1456 |
/// |
| 1436 | 1457 |
/// For example, if \c m1 and \c m2 are both maps with \c bool values, |
| 1437 | 1458 |
/// then <tt>andMap(m1,m2)[x]</tt> will be equal to |
| 1438 | 1459 |
/// <tt>m1[x]&&m2[x]</tt>. |
| 1439 | 1460 |
/// |
| 1440 | 1461 |
/// \relates AndMap |
| 1441 | 1462 |
template<typename M1, typename M2> |
| 1442 | 1463 |
inline AndMap<M1, M2> andMap(const M1 &m1, const M2 &m2) {
|
| 1443 | 1464 |
return AndMap<M1, M2>(m1,m2); |
| 1444 | 1465 |
} |
| 1445 | 1466 |
|
| 1446 | 1467 |
|
| 1447 | 1468 |
/// Logical 'or' of two maps |
| 1448 | 1469 |
|
| 1449 | 1470 |
/// This \ref concepts::ReadMap "read-only map" returns the logical |
| 1450 | 1471 |
/// 'or' of the values of the two given maps. |
| 1451 | 1472 |
/// Its \c Key type is inherited from \c M1 and its \c Value type is |
| 1452 | 1473 |
/// \c bool. \c M2::Key must be convertible to \c M1::Key. |
| 1453 | 1474 |
/// |
| 1454 | 1475 |
/// If \c m1 is of type \c M1 and \c m2 is of \c M2, then for |
| 1455 | 1476 |
/// \code |
| 1456 | 1477 |
/// OrMap<M1,M2> om(m1,m2); |
| 1457 | 1478 |
/// \endcode |
| 1458 | 1479 |
/// <tt>om[x]</tt> will be equal to <tt>m1[x]||m2[x]</tt>. |
| 1459 | 1480 |
/// |
| 1460 | 1481 |
/// The simplest way of using this map is through the orMap() |
| 1461 | 1482 |
/// function. |
| 1462 | 1483 |
/// |
| 1463 | 1484 |
/// \sa AndMap |
| 1464 | 1485 |
/// \sa NotMap, NotWriteMap |
| 1465 | 1486 |
template<typename M1, typename M2> |
| 1466 | 1487 |
class OrMap : public MapBase<typename M1::Key, bool> {
|
| 1467 | 1488 |
const M1 &_m1; |
| 1468 | 1489 |
const M2 &_m2; |
| 1469 | 1490 |
public: |
| 1470 |
typedef MapBase<typename M1::Key, bool> Parent; |
|
| 1471 |
typedef typename Parent::Key Key; |
|
| 1472 |
|
|
| 1491 |
///\e |
|
| 1492 |
typedef typename M1::Key Key; |
|
| 1493 |
///\e |
|
| 1494 |
typedef bool Value; |
|
| 1473 | 1495 |
|
| 1474 | 1496 |
/// Constructor |
| 1475 | 1497 |
OrMap(const M1 &m1, const M2 &m2) : _m1(m1), _m2(m2) {}
|
| 1476 |
/// |
|
| 1498 |
///\e |
|
| 1477 | 1499 |
Value operator[](const Key &k) const { return _m1[k]||_m2[k]; }
|
| 1478 | 1500 |
}; |
| 1479 | 1501 |
|
| 1480 | 1502 |
/// Returns an \c OrMap class |
| 1481 | 1503 |
|
| 1482 | 1504 |
/// This function just returns an \c OrMap class. |
| 1483 | 1505 |
/// |
| 1484 | 1506 |
/// For example, if \c m1 and \c m2 are both maps with \c bool values, |
| 1485 | 1507 |
/// then <tt>orMap(m1,m2)[x]</tt> will be equal to |
| 1486 | 1508 |
/// <tt>m1[x]||m2[x]</tt>. |
| 1487 | 1509 |
/// |
| 1488 | 1510 |
/// \relates OrMap |
| 1489 | 1511 |
template<typename M1, typename M2> |
| 1490 | 1512 |
inline OrMap<M1, M2> orMap(const M1 &m1, const M2 &m2) {
|
| 1491 | 1513 |
return OrMap<M1, M2>(m1,m2); |
| 1492 | 1514 |
} |
| 1493 | 1515 |
|
| 1494 | 1516 |
|
| 1495 | 1517 |
/// Logical 'not' of a map |
| 1496 | 1518 |
|
| 1497 | 1519 |
/// This \ref concepts::ReadMap "read-only map" returns the logical |
| 1498 | 1520 |
/// negation of the values of the given map. |
| 1499 | 1521 |
/// Its \c Key is inherited from \c M and its \c Value is \c bool. |
| 1500 | 1522 |
/// |
| 1501 | 1523 |
/// The simplest way of using this map is through the notMap() |
| 1502 | 1524 |
/// function. |
| 1503 | 1525 |
/// |
| 1504 | 1526 |
/// \sa NotWriteMap |
| 1505 | 1527 |
template <typename M> |
| 1506 | 1528 |
class NotMap : public MapBase<typename M::Key, bool> {
|
| 1507 | 1529 |
const M &_m; |
| 1508 | 1530 |
public: |
| 1509 |
typedef MapBase<typename M::Key, bool> Parent; |
|
| 1510 |
typedef typename Parent::Key Key; |
|
| 1511 |
|
|
| 1531 |
///\e |
|
| 1532 |
typedef typename M::Key Key; |
|
| 1533 |
///\e |
|
| 1534 |
typedef bool Value; |
|
| 1512 | 1535 |
|
| 1513 | 1536 |
/// Constructor |
| 1514 | 1537 |
NotMap(const M &m) : _m(m) {}
|
| 1515 |
/// |
|
| 1538 |
///\e |
|
| 1516 | 1539 |
Value operator[](const Key &k) const { return !_m[k]; }
|
| 1517 | 1540 |
}; |
| 1518 | 1541 |
|
| 1519 | 1542 |
/// Logical 'not' of a map (read-write version) |
| 1520 | 1543 |
|
| 1521 | 1544 |
/// This \ref concepts::ReadWriteMap "read-write map" returns the |
| 1522 | 1545 |
/// logical negation of the values of the given map. |
| 1523 | 1546 |
/// Its \c Key is inherited from \c M and its \c Value is \c bool. |
| 1524 | 1547 |
/// It makes also possible to write the map. When a value is set, |
| 1525 | 1548 |
/// the opposite value is set to the original map. |
| 1526 | 1549 |
/// |
| 1527 | 1550 |
/// The simplest way of using this map is through the notWriteMap() |
| 1528 | 1551 |
/// function. |
| 1529 | 1552 |
/// |
| 1530 | 1553 |
/// \sa NotMap |
| 1531 | 1554 |
template <typename M> |
| 1532 | 1555 |
class NotWriteMap : public MapBase<typename M::Key, bool> {
|
| 1533 | 1556 |
M &_m; |
| 1534 | 1557 |
public: |
| 1535 |
typedef MapBase<typename M::Key, bool> Parent; |
|
| 1536 |
typedef typename Parent::Key Key; |
|
| 1537 |
|
|
| 1558 |
///\e |
|
| 1559 |
typedef typename M::Key Key; |
|
| 1560 |
///\e |
|
| 1561 |
typedef bool Value; |
|
| 1538 | 1562 |
|
| 1539 | 1563 |
/// Constructor |
| 1540 | 1564 |
NotWriteMap(M &m) : _m(m) {}
|
| 1541 |
/// |
|
| 1565 |
///\e |
|
| 1542 | 1566 |
Value operator[](const Key &k) const { return !_m[k]; }
|
| 1543 |
/// |
|
| 1567 |
///\e |
|
| 1544 | 1568 |
void set(const Key &k, bool v) { _m.set(k, !v); }
|
| 1545 | 1569 |
}; |
| 1546 | 1570 |
|
| 1547 | 1571 |
/// Returns a \c NotMap class |
| 1548 | 1572 |
|
| 1549 | 1573 |
/// This function just returns a \c NotMap class. |
| 1550 | 1574 |
/// |
| 1551 | 1575 |
/// For example, if \c m is a map with \c bool values, then |
| 1552 | 1576 |
/// <tt>notMap(m)[x]</tt> will be equal to <tt>!m[x]</tt>. |
| 1553 | 1577 |
/// |
| 1554 | 1578 |
/// \relates NotMap |
| 1555 | 1579 |
template <typename M> |
| 1556 | 1580 |
inline NotMap<M> notMap(const M &m) {
|
| 1557 | 1581 |
return NotMap<M>(m); |
| 1558 | 1582 |
} |
| 1559 | 1583 |
|
| 1560 | 1584 |
/// Returns a \c NotWriteMap class |
| 1561 | 1585 |
|
| 1562 | 1586 |
/// This function just returns a \c NotWriteMap class. |
| 1563 | 1587 |
/// |
| 1564 | 1588 |
/// For example, if \c m is a map with \c bool values, then |
| 1565 | 1589 |
/// <tt>notWriteMap(m)[x]</tt> will be equal to <tt>!m[x]</tt>. |
| 1566 | 1590 |
/// Moreover it makes also possible to write the map. |
| 1567 | 1591 |
/// |
| 1568 | 1592 |
/// \relates NotWriteMap |
| 1569 | 1593 |
template <typename M> |
| 1570 | 1594 |
inline NotWriteMap<M> notWriteMap(M &m) {
|
| 1571 | 1595 |
return NotWriteMap<M>(m); |
| 1572 | 1596 |
} |
| 1573 | 1597 |
|
| 1574 | 1598 |
|
| 1575 | 1599 |
/// Combination of two maps using the \c == operator |
| 1576 | 1600 |
|
| 1577 | 1601 |
/// This \ref concepts::ReadMap "read-only map" assigns \c true to |
| 1578 | 1602 |
/// the keys for which the corresponding values of the two maps are |
| 1579 | 1603 |
/// equal. |
| 1580 | 1604 |
/// Its \c Key type is inherited from \c M1 and its \c Value type is |
| 1581 | 1605 |
/// \c bool. \c M2::Key must be convertible to \c M1::Key. |
| 1582 | 1606 |
/// |
| 1583 | 1607 |
/// If \c m1 is of type \c M1 and \c m2 is of \c M2, then for |
| 1584 | 1608 |
/// \code |
| 1585 | 1609 |
/// EqualMap<M1,M2> em(m1,m2); |
| 1586 | 1610 |
/// \endcode |
| 1587 | 1611 |
/// <tt>em[x]</tt> will be equal to <tt>m1[x]==m2[x]</tt>. |
| 1588 | 1612 |
/// |
| 1589 | 1613 |
/// The simplest way of using this map is through the equalMap() |
| 1590 | 1614 |
/// function. |
| 1591 | 1615 |
/// |
| 1592 | 1616 |
/// \sa LessMap |
| 1593 | 1617 |
template<typename M1, typename M2> |
| 1594 | 1618 |
class EqualMap : public MapBase<typename M1::Key, bool> {
|
| 1595 | 1619 |
const M1 &_m1; |
| 1596 | 1620 |
const M2 &_m2; |
| 1597 | 1621 |
public: |
| 1598 |
typedef MapBase<typename M1::Key, bool> Parent; |
|
| 1599 |
typedef typename Parent::Key Key; |
|
| 1600 |
|
|
| 1622 |
///\e |
|
| 1623 |
typedef typename M1::Key Key; |
|
| 1624 |
///\e |
|
| 1625 |
typedef bool Value; |
|
| 1601 | 1626 |
|
| 1602 | 1627 |
/// Constructor |
| 1603 | 1628 |
EqualMap(const M1 &m1, const M2 &m2) : _m1(m1), _m2(m2) {}
|
| 1604 |
/// |
|
| 1629 |
///\e |
|
| 1605 | 1630 |
Value operator[](const Key &k) const { return _m1[k]==_m2[k]; }
|
| 1606 | 1631 |
}; |
| 1607 | 1632 |
|
| 1608 | 1633 |
/// Returns an \c EqualMap class |
| 1609 | 1634 |
|
| 1610 | 1635 |
/// This function just returns an \c EqualMap class. |
| 1611 | 1636 |
/// |
| 1612 | 1637 |
/// For example, if \c m1 and \c m2 are maps with keys and values of |
| 1613 | 1638 |
/// the same type, then <tt>equalMap(m1,m2)[x]</tt> will be equal to |
| 1614 | 1639 |
/// <tt>m1[x]==m2[x]</tt>. |
| 1615 | 1640 |
/// |
| 1616 | 1641 |
/// \relates EqualMap |
| 1617 | 1642 |
template<typename M1, typename M2> |
| 1618 | 1643 |
inline EqualMap<M1, M2> equalMap(const M1 &m1, const M2 &m2) {
|
| 1619 | 1644 |
return EqualMap<M1, M2>(m1,m2); |
| 1620 | 1645 |
} |
| 1621 | 1646 |
|
| 1622 | 1647 |
|
| 1623 | 1648 |
/// Combination of two maps using the \c < operator |
| 1624 | 1649 |
|
| 1625 | 1650 |
/// This \ref concepts::ReadMap "read-only map" assigns \c true to |
| 1626 | 1651 |
/// the keys for which the corresponding value of the first map is |
| 1627 | 1652 |
/// less then the value of the second map. |
| 1628 | 1653 |
/// Its \c Key type is inherited from \c M1 and its \c Value type is |
| 1629 | 1654 |
/// \c bool. \c M2::Key must be convertible to \c M1::Key. |
| 1630 | 1655 |
/// |
| 1631 | 1656 |
/// If \c m1 is of type \c M1 and \c m2 is of \c M2, then for |
| 1632 | 1657 |
/// \code |
| 1633 | 1658 |
/// LessMap<M1,M2> lm(m1,m2); |
| 1634 | 1659 |
/// \endcode |
| 1635 | 1660 |
/// <tt>lm[x]</tt> will be equal to <tt>m1[x]<m2[x]</tt>. |
| 1636 | 1661 |
/// |
| 1637 | 1662 |
/// The simplest way of using this map is through the lessMap() |
| 1638 | 1663 |
/// function. |
| 1639 | 1664 |
/// |
| 1640 | 1665 |
/// \sa EqualMap |
| 1641 | 1666 |
template<typename M1, typename M2> |
| 1642 | 1667 |
class LessMap : public MapBase<typename M1::Key, bool> {
|
| 1643 | 1668 |
const M1 &_m1; |
| 1644 | 1669 |
const M2 &_m2; |
| 1645 | 1670 |
public: |
| 1646 |
typedef MapBase<typename M1::Key, bool> Parent; |
|
| 1647 |
typedef typename Parent::Key Key; |
|
| 1648 |
|
|
| 1671 |
///\e |
|
| 1672 |
typedef typename M1::Key Key; |
|
| 1673 |
///\e |
|
| 1674 |
typedef bool Value; |
|
| 1649 | 1675 |
|
| 1650 | 1676 |
/// Constructor |
| 1651 | 1677 |
LessMap(const M1 &m1, const M2 &m2) : _m1(m1), _m2(m2) {}
|
| 1652 |
/// |
|
| 1678 |
///\e |
|
| 1653 | 1679 |
Value operator[](const Key &k) const { return _m1[k]<_m2[k]; }
|
| 1654 | 1680 |
}; |
| 1655 | 1681 |
|
| 1656 | 1682 |
/// Returns an \c LessMap class |
| 1657 | 1683 |
|
| 1658 | 1684 |
/// This function just returns an \c LessMap class. |
| 1659 | 1685 |
/// |
| 1660 | 1686 |
/// For example, if \c m1 and \c m2 are maps with keys and values of |
| 1661 | 1687 |
/// the same type, then <tt>lessMap(m1,m2)[x]</tt> will be equal to |
| 1662 | 1688 |
/// <tt>m1[x]<m2[x]</tt>. |
| 1663 | 1689 |
/// |
| 1664 | 1690 |
/// \relates LessMap |
| 1665 | 1691 |
template<typename M1, typename M2> |
| 1666 | 1692 |
inline LessMap<M1, M2> lessMap(const M1 &m1, const M2 &m2) {
|
| 1667 | 1693 |
return LessMap<M1, M2>(m1,m2); |
| 1668 | 1694 |
} |
| 1669 | 1695 |
|
| 1670 | 1696 |
namespace _maps_bits {
|
| 1671 | 1697 |
|
| 1672 | 1698 |
template <typename _Iterator, typename Enable = void> |
| 1673 | 1699 |
struct IteratorTraits {
|
| 1674 | 1700 |
typedef typename std::iterator_traits<_Iterator>::value_type Value; |
| 1675 | 1701 |
}; |
| 1676 | 1702 |
|
| 1677 | 1703 |
template <typename _Iterator> |
| 1678 | 1704 |
struct IteratorTraits<_Iterator, |
| 1679 | 1705 |
typename exists<typename _Iterator::container_type>::type> |
| 1680 | 1706 |
{
|
| 1681 | 1707 |
typedef typename _Iterator::container_type::value_type Value; |
| 1682 | 1708 |
}; |
| 1683 | 1709 |
|
| 1684 | 1710 |
} |
| 1685 | 1711 |
|
| 1686 | 1712 |
/// @} |
| 1687 | 1713 |
|
| 1688 | 1714 |
/// \addtogroup maps |
| 1689 | 1715 |
/// @{
|
| 1690 | 1716 |
|
| 1691 | 1717 |
/// \brief Writable bool map for logging each \c true assigned element |
| 1692 | 1718 |
/// |
| 1693 | 1719 |
/// A \ref concepts::WriteMap "writable" bool map for logging |
| 1694 | 1720 |
/// each \c true assigned element, i.e it copies subsequently each |
| 1695 | 1721 |
/// keys set to \c true to the given iterator. |
| 1696 | 1722 |
/// The most important usage of it is storing certain nodes or arcs |
| 1697 | 1723 |
/// that were marked \c true by an algorithm. |
| 1698 | 1724 |
/// |
| 1699 | 1725 |
/// There are several algorithms that provide solutions through bool |
| 1700 | 1726 |
/// maps and most of them assign \c true at most once for each key. |
| 1701 | 1727 |
/// In these cases it is a natural request to store each \c true |
| 1702 | 1728 |
/// assigned elements (in order of the assignment), which can be |
| 1703 | 1729 |
/// easily done with LoggerBoolMap. |
| 1704 | 1730 |
/// |
| 1705 | 1731 |
/// The simplest way of using this map is through the loggerBoolMap() |
| 1706 | 1732 |
/// function. |
| 1707 | 1733 |
/// |
| 1708 |
/// \tparam It The type of the iterator. |
|
| 1709 |
/// \tparam Ke The key type of the map. The default value set |
|
| 1734 |
/// \tparam IT The type of the iterator. |
|
| 1735 |
/// \tparam KEY The key type of the map. The default value set |
|
| 1710 | 1736 |
/// according to the iterator type should work in most cases. |
| 1711 | 1737 |
/// |
| 1712 | 1738 |
/// \note The container of the iterator must contain enough space |
| 1713 | 1739 |
/// for the elements or the iterator should be an inserter iterator. |
| 1714 | 1740 |
#ifdef DOXYGEN |
| 1715 |
template <typename |
|
| 1741 |
template <typename IT, typename KEY> |
|
| 1716 | 1742 |
#else |
| 1717 |
template <typename It, |
|
| 1718 |
typename Ke=typename _maps_bits::IteratorTraits<It>::Value> |
|
| 1743 |
template <typename IT, |
|
| 1744 |
typename KEY = typename _maps_bits::IteratorTraits<IT>::Value> |
|
| 1719 | 1745 |
#endif |
| 1720 |
class LoggerBoolMap {
|
|
| 1746 |
class LoggerBoolMap : public MapBase<KEY, bool> {
|
|
| 1721 | 1747 |
public: |
| 1722 |
typedef It Iterator; |
|
| 1723 |
|
|
| 1724 |
|
|
| 1748 |
|
|
| 1749 |
///\e |
|
| 1750 |
typedef KEY Key; |
|
| 1751 |
///\e |
|
| 1725 | 1752 |
typedef bool Value; |
| 1753 |
///\e |
|
| 1754 |
typedef IT Iterator; |
|
| 1726 | 1755 |
|
| 1727 | 1756 |
/// Constructor |
| 1728 | 1757 |
LoggerBoolMap(Iterator it) |
| 1729 | 1758 |
: _begin(it), _end(it) {}
|
| 1730 | 1759 |
|
| 1731 | 1760 |
/// Gives back the given iterator set for the first key |
| 1732 | 1761 |
Iterator begin() const {
|
| 1733 | 1762 |
return _begin; |
| 1734 | 1763 |
} |
| 1735 | 1764 |
|
| 1736 | 1765 |
/// Gives back the the 'after the last' iterator |
| 1737 | 1766 |
Iterator end() const {
|
| 1738 | 1767 |
return _end; |
| 1739 | 1768 |
} |
| 1740 | 1769 |
|
| 1741 | 1770 |
/// The set function of the map |
| 1742 | 1771 |
void set(const Key& key, Value value) {
|
| 1743 | 1772 |
if (value) {
|
| 1744 | 1773 |
*_end++ = key; |
| 1745 | 1774 |
} |
| 1746 | 1775 |
} |
| 1747 | 1776 |
|
| 1748 | 1777 |
private: |
| 1749 | 1778 |
Iterator _begin; |
| 1750 | 1779 |
Iterator _end; |
| 1751 | 1780 |
}; |
| 1752 | 1781 |
|
| 1753 | 1782 |
/// Returns a \c LoggerBoolMap class |
| 1754 | 1783 |
|
| 1755 | 1784 |
/// This function just returns a \c LoggerBoolMap class. |
| 1756 | 1785 |
/// |
| 1757 | 1786 |
/// The most important usage of it is storing certain nodes or arcs |
| 1758 | 1787 |
/// that were marked \c true by an algorithm. |
| 1759 | 1788 |
/// For example it makes easier to store the nodes in the processing |
| 1760 | 1789 |
/// order of Dfs algorithm, as the following examples show. |
| 1761 | 1790 |
/// \code |
| 1762 | 1791 |
/// std::vector<Node> v; |
| 1763 |
/// dfs(g |
|
| 1792 |
/// dfs(g).processedMap(loggerBoolMap(std::back_inserter(v))).run(s); |
|
| 1764 | 1793 |
/// \endcode |
| 1765 | 1794 |
/// \code |
| 1766 | 1795 |
/// std::vector<Node> v(countNodes(g)); |
| 1767 |
/// dfs(g |
|
| 1796 |
/// dfs(g).processedMap(loggerBoolMap(v.begin())).run(s); |
|
| 1768 | 1797 |
/// \endcode |
| 1769 | 1798 |
/// |
| 1770 | 1799 |
/// \note The container of the iterator must contain enough space |
| 1771 | 1800 |
/// for the elements or the iterator should be an inserter iterator. |
| 1772 | 1801 |
/// |
| 1773 | 1802 |
/// \note LoggerBoolMap is just \ref concepts::WriteMap "writable", so |
| 1774 | 1803 |
/// it cannot be used when a readable map is needed, for example as |
| 1775 | 1804 |
/// \c ReachedMap for \c Bfs, \c Dfs and \c Dijkstra algorithms. |
| 1776 | 1805 |
/// |
| 1777 | 1806 |
/// \relates LoggerBoolMap |
| 1778 | 1807 |
template<typename Iterator> |
| 1779 | 1808 |
inline LoggerBoolMap<Iterator> loggerBoolMap(Iterator it) {
|
| 1780 | 1809 |
return LoggerBoolMap<Iterator>(it); |
| 1781 | 1810 |
} |
| 1782 | 1811 |
|
| 1783 | 1812 |
/// @} |
| 1784 | 1813 |
|
| 1785 | 1814 |
/// \addtogroup graph_maps |
| 1786 | 1815 |
/// @{
|
| 1787 | 1816 |
|
| 1788 |
/// Provides an immutable and unique id for each item in the graph. |
|
| 1789 |
|
|
| 1790 |
/// The IdMap class provides a unique and immutable id for each item of the |
|
| 1791 |
/// same type (e.g. node) in the graph. This id is <ul><li>\b unique: |
|
| 1792 |
/// different items (nodes) get different ids <li>\b immutable: the id of an |
|
| 1793 |
/// item (node) does not change (even if you delete other nodes). </ul> |
|
| 1794 |
/// Through this map you get access (i.e. can read) the inner id values of |
|
| 1795 |
/// the items stored in the graph. This map can be inverted with its member |
|
| 1796 |
/// |
|
| 1817 |
/// \brief Provides an immutable and unique id for each item in a graph. |
|
| 1797 | 1818 |
/// |
| 1798 |
template <typename _Graph, typename _Item> |
|
| 1799 |
class IdMap {
|
|
| 1819 |
/// IdMap provides a unique and immutable id for each item of the |
|
| 1820 |
/// same type (\c Node, \c Arc or \c Edge) in a graph. This id is |
|
| 1821 |
/// - \b unique: different items get different ids, |
|
| 1822 |
/// - \b immutable: the id of an item does not change (even if you |
|
| 1823 |
/// delete other nodes). |
|
| 1824 |
/// |
|
| 1825 |
/// Using this map you get access (i.e. can read) the inner id values of |
|
| 1826 |
/// the items stored in the graph, which is returned by the \c id() |
|
| 1827 |
/// function of the graph. This map can be inverted with its member |
|
| 1828 |
/// class \c InverseMap or with the \c operator()() member. |
|
| 1829 |
/// |
|
| 1830 |
/// \tparam GR The graph type. |
|
| 1831 |
/// \tparam K The key type of the map (\c GR::Node, \c GR::Arc or |
|
| 1832 |
/// \c GR::Edge). |
|
| 1833 |
/// |
|
| 1834 |
/// \see RangeIdMap |
|
| 1835 |
template <typename GR, typename K> |
|
| 1836 |
class IdMap : public MapBase<K, int> {
|
|
| 1800 | 1837 |
public: |
| 1801 |
|
|
| 1838 |
/// The graph type of IdMap. |
|
| 1839 |
typedef GR Graph; |
|
| 1840 |
typedef GR Digraph; |
|
| 1841 |
/// The key type of IdMap (\c Node, \c Arc or \c Edge). |
|
| 1842 |
typedef K Item; |
|
| 1843 |
/// The key type of IdMap (\c Node, \c Arc or \c Edge). |
|
| 1844 |
typedef K Key; |
|
| 1845 |
/// The value type of IdMap. |
|
| 1802 | 1846 |
typedef int Value; |
| 1803 |
typedef _Item Item; |
|
| 1804 |
typedef _Item Key; |
|
| 1805 | 1847 |
|
| 1806 | 1848 |
/// \brief Constructor. |
| 1807 | 1849 |
/// |
| 1808 | 1850 |
/// Constructor of the map. |
| 1809 | 1851 |
explicit IdMap(const Graph& graph) : _graph(&graph) {}
|
| 1810 | 1852 |
|
| 1811 | 1853 |
/// \brief Gives back the \e id of the item. |
| 1812 | 1854 |
/// |
| 1813 | 1855 |
/// Gives back the immutable and unique \e id of the item. |
| 1814 | 1856 |
int operator[](const Item& item) const { return _graph->id(item);}
|
| 1815 | 1857 |
|
| 1816 |
/// \brief Gives back the item by its id. |
|
| 1858 |
/// \brief Gives back the \e item by its id. |
|
| 1817 | 1859 |
/// |
| 1818 |
/// Gives back the item by its id. |
|
| 1860 |
/// Gives back the \e item by its id. |
|
| 1819 | 1861 |
Item operator()(int id) { return _graph->fromId(id, Item()); }
|
| 1820 | 1862 |
|
| 1821 | 1863 |
private: |
| 1822 | 1864 |
const Graph* _graph; |
| 1823 | 1865 |
|
| 1824 | 1866 |
public: |
| 1825 | 1867 |
|
| 1826 |
/// \brief The |
|
| 1868 |
/// \brief The inverse map type of IdMap. |
|
| 1827 | 1869 |
/// |
| 1828 |
/// The |
|
| 1870 |
/// The inverse map type of IdMap. The subscript operator gives back |
|
| 1871 |
/// an item by its id. |
|
| 1872 |
/// This type conforms to the \ref concepts::ReadMap "ReadMap" concept. |
|
| 1829 | 1873 |
/// \see inverse() |
| 1830 | 1874 |
class InverseMap {
|
| 1831 | 1875 |
public: |
| 1832 | 1876 |
|
| 1833 | 1877 |
/// \brief Constructor. |
| 1834 | 1878 |
/// |
| 1835 | 1879 |
/// Constructor for creating an id-to-item map. |
| 1836 | 1880 |
explicit InverseMap(const Graph& graph) : _graph(&graph) {}
|
| 1837 | 1881 |
|
| 1838 | 1882 |
/// \brief Constructor. |
| 1839 | 1883 |
/// |
| 1840 | 1884 |
/// Constructor for creating an id-to-item map. |
| 1841 | 1885 |
explicit InverseMap(const IdMap& map) : _graph(map._graph) {}
|
| 1842 | 1886 |
|
| 1843 |
/// \brief Gives back |
|
| 1887 |
/// \brief Gives back an item by its id. |
|
| 1844 | 1888 |
/// |
| 1845 |
/// Gives back the given item from its id. |
|
| 1846 |
/// |
|
| 1889 |
/// Gives back an item by its id. |
|
| 1847 | 1890 |
Item operator[](int id) const { return _graph->fromId(id, Item());}
|
| 1848 | 1891 |
|
| 1849 | 1892 |
private: |
| 1850 | 1893 |
const Graph* _graph; |
| 1851 | 1894 |
}; |
| 1852 | 1895 |
|
| 1853 | 1896 |
/// \brief Gives back the inverse of the map. |
| 1854 | 1897 |
/// |
| 1855 | 1898 |
/// Gives back the inverse of the IdMap. |
| 1856 | 1899 |
InverseMap inverse() const { return InverseMap(*_graph);}
|
| 1857 |
|
|
| 1858 | 1900 |
}; |
| 1859 | 1901 |
|
| 1860 |
|
|
| 1861 |
/// \brief General invertable graph-map type. |
|
| 1862 |
|
|
| 1863 |
/// This type provides simple invertable graph-maps. |
|
| 1864 |
/// The InvertableMap wraps an arbitrary ReadWriteMap |
|
| 1865 |
/// and if a key is set to a new value then store it |
|
| 1866 |
/// |
|
| 1902 |
/// \brief Returns an \c IdMap class. |
|
| 1867 | 1903 |
/// |
| 1868 |
/// The values of the map can be accessed |
|
| 1869 |
/// with stl compatible forward iterator. |
|
| 1904 |
/// This function just returns an \c IdMap class. |
|
| 1905 |
/// \relates IdMap |
|
| 1906 |
template <typename K, typename GR> |
|
| 1907 |
inline IdMap<GR, K> idMap(const GR& graph) {
|
|
| 1908 |
return IdMap<GR, K>(graph); |
|
| 1909 |
} |
|
| 1910 |
|
|
| 1911 |
/// \brief General cross reference graph map type. |
|
| 1912 |
|
|
| 1913 |
/// This class provides simple invertable graph maps. |
|
| 1914 |
/// It wraps a standard graph map (\c NodeMap, \c ArcMap or \c EdgeMap) |
|
| 1915 |
/// and if a key is set to a new value, then stores it in the inverse map. |
|
| 1916 |
/// The graph items can be accessed by their values either using |
|
| 1917 |
/// \c InverseMap or \c operator()(), and the values of the map can be |
|
| 1918 |
/// accessed with an STL compatible forward iterator (\c ValueIt). |
|
| 1919 |
/// |
|
| 1920 |
/// This map is intended to be used when all associated values are |
|
| 1921 |
/// different (the map is actually invertable) or there are only a few |
|
| 1922 |
/// items with the same value. |
|
| 1923 |
/// Otherwise consider to use \c IterableValueMap, which is more |
|
| 1924 |
/// suitable and more efficient for such cases. It provides iterators |
|
| 1925 |
/// to traverse the items with the same associated value, however |
|
| 1926 |
/// it does not have \c InverseMap. |
|
| 1870 | 1927 |
/// |
| 1871 |
/// \tparam _Graph The graph type. |
|
| 1872 |
/// \tparam _Item The item type of the graph. |
|
| 1873 |
/// |
|
| 1928 |
/// This type is not reference map, so it cannot be modified with |
|
| 1929 |
/// the subscript operator. |
|
| 1930 |
/// |
|
| 1931 |
/// \tparam GR The graph type. |
|
| 1932 |
/// \tparam K The key type of the map (\c GR::Node, \c GR::Arc or |
|
| 1933 |
/// \c GR::Edge). |
|
| 1934 |
/// \tparam V The value type of the map. |
|
| 1874 | 1935 |
/// |
| 1875 | 1936 |
/// \see IterableValueMap |
| 1876 |
template <typename _Graph, typename _Item, typename _Value> |
|
| 1877 |
class InvertableMap |
|
| 1878 |
|
|
| 1937 |
template <typename GR, typename K, typename V> |
|
| 1938 |
class CrossRefMap |
|
| 1939 |
: protected ItemSetTraits<GR, K>::template Map<V>::Type {
|
|
| 1879 | 1940 |
private: |
| 1880 | 1941 |
|
| 1881 |
typedef typename ItemSetTraits<_Graph, _Item>:: |
|
| 1882 |
template Map<_Value>::Type Map; |
|
| 1883 |
typedef _Graph Graph; |
|
| 1884 |
|
|
| 1885 |
typedef |
|
| 1942 |
typedef typename ItemSetTraits<GR, K>:: |
|
| 1943 |
template Map<V>::Type Map; |
|
| 1944 |
|
|
| 1945 |
typedef std::multimap<V, K> Container; |
|
| 1886 | 1946 |
Container _inv_map; |
| 1887 | 1947 |
|
| 1888 | 1948 |
public: |
| 1889 | 1949 |
|
| 1890 |
/// The key type of InvertableMap (Node, Arc, Edge). |
|
| 1891 |
typedef typename Map::Key Key; |
|
| 1892 |
/// The value type of the InvertableMap. |
|
| 1893 |
typedef typename Map::Value Value; |
|
| 1950 |
/// The graph type of CrossRefMap. |
|
| 1951 |
typedef GR Graph; |
|
| 1952 |
typedef GR Digraph; |
|
| 1953 |
/// The key type of CrossRefMap (\c Node, \c Arc or \c Edge). |
|
| 1954 |
typedef K Item; |
|
| 1955 |
/// The key type of CrossRefMap (\c Node, \c Arc or \c Edge). |
|
| 1956 |
typedef K Key; |
|
| 1957 |
/// The value type of CrossRefMap. |
|
| 1958 |
typedef V Value; |
|
| 1894 | 1959 |
|
| 1895 | 1960 |
/// \brief Constructor. |
| 1896 | 1961 |
/// |
| 1897 |
/// Construct a new InvertableMap for the graph. |
|
| 1898 |
/// |
|
| 1899 |
|
|
| 1962 |
/// Construct a new CrossRefMap for the given graph. |
|
| 1963 |
explicit CrossRefMap(const Graph& graph) : Map(graph) {}
|
|
| 1900 | 1964 |
|
| 1901 | 1965 |
/// \brief Forward iterator for values. |
| 1902 | 1966 |
/// |
| 1903 |
/// This iterator is an |
|
| 1967 |
/// This iterator is an STL compatible forward |
|
| 1904 | 1968 |
/// iterator on the values of the map. The values can |
| 1905 |
/// be accessed in the [beginValue, endValue) range. |
|
| 1906 |
/// |
|
| 1907 |
|
|
| 1969 |
/// be accessed in the <tt>[beginValue, endValue)</tt> range. |
|
| 1970 |
/// They are considered with multiplicity, so each value is |
|
| 1971 |
/// traversed for each item it is assigned to. |
|
| 1972 |
class ValueIt |
|
| 1908 | 1973 |
: public std::iterator<std::forward_iterator_tag, Value> {
|
| 1909 |
friend class |
|
| 1974 |
friend class CrossRefMap; |
|
| 1910 | 1975 |
private: |
| 1911 |
|
|
| 1976 |
ValueIt(typename Container::const_iterator _it) |
|
| 1912 | 1977 |
: it(_it) {}
|
| 1913 | 1978 |
public: |
| 1914 | 1979 |
|
| 1915 |
ValueIterator() {}
|
|
| 1916 |
|
|
| 1917 |
ValueIterator& operator++() { ++it; return *this; }
|
|
| 1918 |
ValueIterator operator++(int) {
|
|
| 1919 |
|
|
| 1980 |
/// Constructor |
|
| 1981 |
ValueIt() {}
|
|
| 1982 |
|
|
| 1983 |
/// \e |
|
| 1984 |
ValueIt& operator++() { ++it; return *this; }
|
|
| 1985 |
/// \e |
|
| 1986 |
ValueIt operator++(int) {
|
|
| 1987 |
ValueIt tmp(*this); |
|
| 1920 | 1988 |
operator++(); |
| 1921 | 1989 |
return tmp; |
| 1922 | 1990 |
} |
| 1923 | 1991 |
|
| 1992 |
/// \e |
|
| 1924 | 1993 |
const Value& operator*() const { return it->first; }
|
| 1994 |
/// \e |
|
| 1925 | 1995 |
const Value* operator->() const { return &(it->first); }
|
| 1926 | 1996 |
|
| 1927 |
bool operator==(ValueIterator jt) const { return it == jt.it; }
|
|
| 1928 |
bool operator!=(ValueIterator jt) const { return it != jt.it; }
|
|
| 1997 |
/// \e |
|
| 1998 |
bool operator==(ValueIt jt) const { return it == jt.it; }
|
|
| 1999 |
/// \e |
|
| 2000 |
bool operator!=(ValueIt jt) const { return it != jt.it; }
|
|
| 1929 | 2001 |
|
| 1930 | 2002 |
private: |
| 1931 | 2003 |
typename Container::const_iterator it; |
| 1932 | 2004 |
}; |
| 2005 |
|
|
| 2006 |
/// Alias for \c ValueIt |
|
| 2007 |
typedef ValueIt ValueIterator; |
|
| 1933 | 2008 |
|
| 1934 | 2009 |
/// \brief Returns an iterator to the first value. |
| 1935 | 2010 |
/// |
| 1936 |
/// Returns an |
|
| 2011 |
/// Returns an STL compatible iterator to the |
|
| 1937 | 2012 |
/// first value of the map. The values of the |
| 1938 |
/// map can be accessed in the [beginValue, endValue) |
|
| 2013 |
/// map can be accessed in the <tt>[beginValue, endValue)</tt> |
|
| 1939 | 2014 |
/// range. |
| 1940 |
ValueIterator beginValue() const {
|
|
| 1941 |
return ValueIterator(_inv_map.begin()); |
|
| 2015 |
ValueIt beginValue() const {
|
|
| 2016 |
return ValueIt(_inv_map.begin()); |
|
| 1942 | 2017 |
} |
| 1943 | 2018 |
|
| 1944 | 2019 |
/// \brief Returns an iterator after the last value. |
| 1945 | 2020 |
/// |
| 1946 |
/// Returns an |
|
| 2021 |
/// Returns an STL compatible iterator after the |
|
| 1947 | 2022 |
/// last value of the map. The values of the |
| 1948 |
/// map can be accessed in the [beginValue, endValue) |
|
| 2023 |
/// map can be accessed in the <tt>[beginValue, endValue)</tt> |
|
| 1949 | 2024 |
/// range. |
| 1950 |
ValueIterator endValue() const {
|
|
| 1951 |
return ValueIterator(_inv_map.end()); |
|
| 2025 |
ValueIt endValue() const {
|
|
| 2026 |
return ValueIt(_inv_map.end()); |
|
| 1952 | 2027 |
} |
| 1953 | 2028 |
|
| 1954 |
/// \brief |
|
| 2029 |
/// \brief Sets the value associated with the given key. |
|
| 1955 | 2030 |
/// |
| 1956 |
/// Sets the |
|
| 2031 |
/// Sets the value associated with the given key. |
|
| 1957 | 2032 |
void set(const Key& key, const Value& val) {
|
| 1958 | 2033 |
Value oldval = Map::operator[](key); |
| 1959 |
typename Container::iterator it = _inv_map.find(oldval); |
|
| 1960 |
if (it != _inv_map.end() && it->second == key) {
|
|
| 1961 |
|
|
| 2034 |
typename Container::iterator it; |
|
| 2035 |
for (it = _inv_map.equal_range(oldval).first; |
|
| 2036 |
it != _inv_map.equal_range(oldval).second; ++it) {
|
|
| 2037 |
if (it->second == key) {
|
|
| 2038 |
_inv_map.erase(it); |
|
| 2039 |
break; |
|
| 2040 |
} |
|
| 1962 | 2041 |
} |
| 1963 |
_inv_map.insert(make_pair(val, key)); |
|
| 2042 |
_inv_map.insert(std::make_pair(val, key)); |
|
| 1964 | 2043 |
Map::set(key, val); |
| 1965 | 2044 |
} |
| 1966 | 2045 |
|
| 1967 |
/// \brief |
|
| 2046 |
/// \brief Returns the value associated with the given key. |
|
| 1968 | 2047 |
/// |
| 1969 |
/// |
|
| 2048 |
/// Returns the value associated with the given key. |
|
| 1970 | 2049 |
typename MapTraits<Map>::ConstReturnValue |
| 1971 | 2050 |
operator[](const Key& key) const {
|
| 1972 | 2051 |
return Map::operator[](key); |
| 1973 | 2052 |
} |
| 1974 | 2053 |
|
| 1975 |
/// \brief Gives back |
|
| 2054 |
/// \brief Gives back an item by its value. |
|
| 1976 | 2055 |
/// |
| 1977 |
/// Gives back the item by its value. |
|
| 1978 |
Key operator()(const Value& key) const {
|
|
| 1979 |
|
|
| 2056 |
/// This function gives back an item that is assigned to |
|
| 2057 |
/// the given value or \c INVALID if no such item exists. |
|
| 2058 |
/// If there are more items with the same associated value, |
|
| 2059 |
/// only one of them is returned. |
|
| 2060 |
Key operator()(const Value& val) const {
|
|
| 2061 |
typename Container::const_iterator it = _inv_map.find(val); |
|
| 1980 | 2062 |
return it != _inv_map.end() ? it->second : INVALID; |
| 1981 | 2063 |
} |
| 2064 |
|
|
| 2065 |
/// \brief Returns the number of items with the given value. |
|
| 2066 |
/// |
|
| 2067 |
/// This function returns the number of items with the given value |
|
| 2068 |
/// associated with it. |
|
| 2069 |
int count(const Value &val) const {
|
|
| 2070 |
return _inv_map.count(val); |
|
| 2071 |
} |
|
| 1982 | 2072 |
|
| 1983 | 2073 |
protected: |
| 1984 | 2074 |
|
| 1985 |
/// \brief Erase the key from the map. |
|
| 2075 |
/// \brief Erase the key from the map and the inverse map. |
|
| 1986 | 2076 |
/// |
| 1987 |
/// Erase the key |
|
| 2077 |
/// Erase the key from the map and the inverse map. It is called by the |
|
| 1988 | 2078 |
/// \c AlterationNotifier. |
| 1989 | 2079 |
virtual void erase(const Key& key) {
|
| 1990 | 2080 |
Value val = Map::operator[](key); |
| 1991 |
typename Container::iterator it = _inv_map.find(val); |
|
| 1992 |
if (it != _inv_map.end() && it->second == key) {
|
|
| 1993 |
|
|
| 2081 |
typename Container::iterator it; |
|
| 2082 |
for (it = _inv_map.equal_range(val).first; |
|
| 2083 |
it != _inv_map.equal_range(val).second; ++it) {
|
|
| 2084 |
if (it->second == key) {
|
|
| 2085 |
_inv_map.erase(it); |
|
| 2086 |
break; |
|
| 2087 |
} |
|
| 1994 | 2088 |
} |
| 1995 | 2089 |
Map::erase(key); |
| 1996 | 2090 |
} |
| 1997 | 2091 |
|
| 1998 |
/// \brief Erase more keys from the map. |
|
| 2092 |
/// \brief Erase more keys from the map and the inverse map. |
|
| 1999 | 2093 |
/// |
| 2000 |
/// Erase more keys from the map. It is called by the |
|
| 2094 |
/// Erase more keys from the map and the inverse map. It is called by the |
|
| 2001 | 2095 |
/// \c AlterationNotifier. |
| 2002 | 2096 |
virtual void erase(const std::vector<Key>& keys) {
|
| 2003 | 2097 |
for (int i = 0; i < int(keys.size()); ++i) {
|
| 2004 | 2098 |
Value val = Map::operator[](keys[i]); |
| 2005 |
typename Container::iterator it = _inv_map.find(val); |
|
| 2006 |
if (it != _inv_map.end() && it->second == keys[i]) {
|
|
| 2007 |
|
|
| 2099 |
typename Container::iterator it; |
|
| 2100 |
for (it = _inv_map.equal_range(val).first; |
|
| 2101 |
it != _inv_map.equal_range(val).second; ++it) {
|
|
| 2102 |
if (it->second == keys[i]) {
|
|
| 2103 |
_inv_map.erase(it); |
|
| 2104 |
break; |
|
| 2105 |
} |
|
| 2008 | 2106 |
} |
| 2009 | 2107 |
} |
| 2010 | 2108 |
Map::erase(keys); |
| 2011 | 2109 |
} |
| 2012 | 2110 |
|
| 2013 |
/// \brief Clear the keys from the map and inverse map. |
|
| 2111 |
/// \brief Clear the keys from the map and the inverse map. |
|
| 2014 | 2112 |
/// |
| 2015 |
/// Clear the keys from the map and inverse map. It is called by the |
|
| 2113 |
/// Clear the keys from the map and the inverse map. It is called by the |
|
| 2016 | 2114 |
/// \c AlterationNotifier. |
| 2017 | 2115 |
virtual void clear() {
|
| 2018 | 2116 |
_inv_map.clear(); |
| 2019 | 2117 |
Map::clear(); |
| 2020 | 2118 |
} |
| 2021 | 2119 |
|
| 2022 | 2120 |
public: |
| 2023 | 2121 |
|
| 2024 |
/// \brief The inverse map type. |
|
| 2122 |
/// \brief The inverse map type of CrossRefMap. |
|
| 2025 | 2123 |
/// |
| 2026 |
/// The inverse of this map. The subscript operator of the map |
|
| 2027 |
/// gives back always the item what was last assigned to the value. |
|
| 2124 |
/// The inverse map type of CrossRefMap. The subscript operator gives |
|
| 2125 |
/// back an item by its value. |
|
| 2126 |
/// This type conforms to the \ref concepts::ReadMap "ReadMap" concept. |
|
| 2127 |
/// \see inverse() |
|
| 2028 | 2128 |
class InverseMap {
|
| 2029 | 2129 |
public: |
| 2030 |
/// \brief Constructor |
|
| 2130 |
/// \brief Constructor |
|
| 2031 | 2131 |
/// |
| 2032 | 2132 |
/// Constructor of the InverseMap. |
| 2033 |
explicit InverseMap(const |
|
| 2133 |
explicit InverseMap(const CrossRefMap& inverted) |
|
| 2034 | 2134 |
: _inverted(inverted) {}
|
| 2035 | 2135 |
|
| 2036 | 2136 |
/// The value type of the InverseMap. |
| 2037 |
typedef typename |
|
| 2137 |
typedef typename CrossRefMap::Key Value; |
|
| 2038 | 2138 |
/// The key type of the InverseMap. |
| 2039 |
typedef typename |
|
| 2139 |
typedef typename CrossRefMap::Value Key; |
|
| 2040 | 2140 |
|
| 2041 | 2141 |
/// \brief Subscript operator. |
| 2042 | 2142 |
/// |
| 2043 |
/// Subscript operator. It gives back always the item |
|
| 2044 |
/// what was last assigned to the value. |
|
| 2143 |
/// Subscript operator. It gives back an item |
|
| 2144 |
/// that is assigned to the given value or \c INVALID |
|
| 2145 |
/// if no such item exists. |
|
| 2045 | 2146 |
Value operator[](const Key& key) const {
|
| 2046 | 2147 |
return _inverted(key); |
| 2047 | 2148 |
} |
| 2048 | 2149 |
|
| 2049 | 2150 |
private: |
| 2050 |
const |
|
| 2151 |
const CrossRefMap& _inverted; |
|
| 2051 | 2152 |
}; |
| 2052 | 2153 |
|
| 2053 |
/// \brief |
|
| 2154 |
/// \brief Gives back the inverse of the map. |
|
| 2054 | 2155 |
/// |
| 2055 |
/// |
|
| 2156 |
/// Gives back the inverse of the CrossRefMap. |
|
| 2056 | 2157 |
InverseMap inverse() const {
|
| 2057 | 2158 |
return InverseMap(*this); |
| 2058 | 2159 |
} |
| 2059 | 2160 |
|
| 2060 | 2161 |
}; |
| 2061 | 2162 |
|
| 2062 |
/// \brief Provides a mutable, continuous and unique descriptor for each |
|
| 2063 |
/// item in the graph. |
|
| 2163 |
/// \brief Provides continuous and unique id for the |
|
| 2164 |
/// items of a graph. |
|
| 2064 | 2165 |
/// |
| 2065 |
/// The DescriptorMap class provides a unique and continuous (but mutable) |
|
| 2066 |
/// descriptor (id) for each item of the same type (e.g. node) in the |
|
| 2067 |
/// graph. This id is <ul><li>\b unique: different items (nodes) get |
|
| 2068 |
/// different ids <li>\b continuous: the range of the ids is the set of |
|
| 2069 |
/// integers between 0 and \c n-1, where \c n is the number of the items of |
|
| 2070 |
/// this type (e.g. nodes) (so the id of a node can change if you delete an |
|
| 2071 |
/// other node, i.e. this id is mutable). </ul> This map can be inverted |
|
| 2072 |
/// with its member class \c InverseMap, or with the \c operator() member. |
|
| 2166 |
/// RangeIdMap provides a unique and continuous |
|
| 2167 |
/// id for each item of a given type (\c Node, \c Arc or |
|
| 2168 |
/// \c Edge) in a graph. This id is |
|
| 2169 |
/// - \b unique: different items get different ids, |
|
| 2170 |
/// - \b continuous: the range of the ids is the set of integers |
|
| 2171 |
/// between 0 and \c n-1, where \c n is the number of the items of |
|
| 2172 |
/// this type (\c Node, \c Arc or \c Edge). |
|
| 2173 |
/// - So, the ids can change when deleting an item of the same type. |
|
| 2073 | 2174 |
/// |
| 2074 |
/// \tparam _Graph The graph class the \c DescriptorMap belongs to. |
|
| 2075 |
/// \tparam _Item The Item is the Key of the Map. It may be Node, Arc or |
|
| 2076 |
/// Edge. |
|
| 2077 |
template <typename _Graph, typename _Item> |
|
| 2078 |
class DescriptorMap |
|
| 2079 |
: protected ItemSetTraits<_Graph, _Item>::template Map<int>::Type {
|
|
| 2080 |
|
|
| 2081 |
typedef _Item Item; |
|
| 2082 |
|
|
| 2175 |
/// Thus this id is not (necessarily) the same as what can get using |
|
| 2176 |
/// the \c id() function of the graph or \ref IdMap. |
|
| 2177 |
/// This map can be inverted with its member class \c InverseMap, |
|
| 2178 |
/// or with the \c operator()() member. |
|
| 2179 |
/// |
|
| 2180 |
/// \tparam GR The graph type. |
|
| 2181 |
/// \tparam K The key type of the map (\c GR::Node, \c GR::Arc or |
|
| 2182 |
/// \c GR::Edge). |
|
| 2183 |
/// |
|
| 2184 |
/// \see IdMap |
|
| 2185 |
template <typename GR, typename K> |
|
| 2186 |
class RangeIdMap |
|
| 2187 |
: protected ItemSetTraits<GR, K>::template Map<int>::Type {
|
|
| 2188 |
|
|
| 2189 |
typedef typename ItemSetTraits<GR, K>::template Map<int>::Type Map; |
|
| 2083 | 2190 |
|
| 2084 | 2191 |
public: |
| 2085 |
/// The graph class of DescriptorMap. |
|
| 2086 |
typedef _Graph Graph; |
|
| 2087 |
|
|
| 2088 |
/// The key type of DescriptorMap (Node, Arc, Edge). |
|
| 2089 |
typedef typename Map::Key Key; |
|
| 2090 |
/// The value type of DescriptorMap. |
|
| 2091 |
|
|
| 2192 |
/// The graph type of RangeIdMap. |
|
| 2193 |
typedef GR Graph; |
|
| 2194 |
typedef GR Digraph; |
|
| 2195 |
/// The key type of RangeIdMap (\c Node, \c Arc or \c Edge). |
|
| 2196 |
typedef K Item; |
|
| 2197 |
/// The key type of RangeIdMap (\c Node, \c Arc or \c Edge). |
|
| 2198 |
typedef K Key; |
|
| 2199 |
/// The value type of RangeIdMap. |
|
| 2200 |
typedef int Value; |
|
| 2092 | 2201 |
|
| 2093 | 2202 |
/// \brief Constructor. |
| 2094 | 2203 |
/// |
| 2095 |
/// Constructor for descriptor map. |
|
| 2096 |
explicit DescriptorMap(const Graph& _graph) : Map(_graph) {
|
|
| 2204 |
/// Constructor. |
|
| 2205 |
explicit RangeIdMap(const Graph& gr) : Map(gr) {
|
|
| 2097 | 2206 |
Item it; |
| 2098 | 2207 |
const typename Map::Notifier* nf = Map::notifier(); |
| 2099 | 2208 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
| 2100 | 2209 |
Map::set(it, _inv_map.size()); |
| 2101 | 2210 |
_inv_map.push_back(it); |
| 2102 | 2211 |
} |
| 2103 | 2212 |
} |
| 2104 | 2213 |
|
| 2105 | 2214 |
protected: |
| 2106 | 2215 |
|
| 2107 |
/// \brief |
|
| 2216 |
/// \brief Adds a new key to the map. |
|
| 2108 | 2217 |
/// |
| 2109 | 2218 |
/// Add a new key to the map. It is called by the |
| 2110 | 2219 |
/// \c AlterationNotifier. |
| 2111 | 2220 |
virtual void add(const Item& item) {
|
| 2112 | 2221 |
Map::add(item); |
| 2113 | 2222 |
Map::set(item, _inv_map.size()); |
| 2114 | 2223 |
_inv_map.push_back(item); |
| 2115 | 2224 |
} |
| 2116 | 2225 |
|
| 2117 | 2226 |
/// \brief Add more new keys to the map. |
| 2118 | 2227 |
/// |
| 2119 | 2228 |
/// Add more new keys to the map. It is called by the |
| 2120 | 2229 |
/// \c AlterationNotifier. |
| 2121 | 2230 |
virtual void add(const std::vector<Item>& items) {
|
| 2122 | 2231 |
Map::add(items); |
| 2123 | 2232 |
for (int i = 0; i < int(items.size()); ++i) {
|
| 2124 | 2233 |
Map::set(items[i], _inv_map.size()); |
| 2125 | 2234 |
_inv_map.push_back(items[i]); |
| 2126 | 2235 |
} |
| 2127 | 2236 |
} |
| 2128 | 2237 |
|
| 2129 | 2238 |
/// \brief Erase the key from the map. |
| 2130 | 2239 |
/// |
| 2131 | 2240 |
/// Erase the key from the map. It is called by the |
| 2132 | 2241 |
/// \c AlterationNotifier. |
| 2133 | 2242 |
virtual void erase(const Item& item) {
|
| 2134 | 2243 |
Map::set(_inv_map.back(), Map::operator[](item)); |
| 2135 | 2244 |
_inv_map[Map::operator[](item)] = _inv_map.back(); |
| 2136 | 2245 |
_inv_map.pop_back(); |
| 2137 | 2246 |
Map::erase(item); |
| 2138 | 2247 |
} |
| 2139 | 2248 |
|
| 2140 | 2249 |
/// \brief Erase more keys from the map. |
| 2141 | 2250 |
/// |
| 2142 | 2251 |
/// Erase more keys from the map. It is called by the |
| 2143 | 2252 |
/// \c AlterationNotifier. |
| 2144 | 2253 |
virtual void erase(const std::vector<Item>& items) {
|
| 2145 | 2254 |
for (int i = 0; i < int(items.size()); ++i) {
|
| 2146 | 2255 |
Map::set(_inv_map.back(), Map::operator[](items[i])); |
| 2147 | 2256 |
_inv_map[Map::operator[](items[i])] = _inv_map.back(); |
| 2148 | 2257 |
_inv_map.pop_back(); |
| 2149 | 2258 |
} |
| 2150 | 2259 |
Map::erase(items); |
| 2151 | 2260 |
} |
| 2152 | 2261 |
|
| 2153 | 2262 |
/// \brief Build the unique map. |
| 2154 | 2263 |
/// |
| 2155 | 2264 |
/// Build the unique map. It is called by the |
| 2156 | 2265 |
/// \c AlterationNotifier. |
| 2157 | 2266 |
virtual void build() {
|
| 2158 | 2267 |
Map::build(); |
| 2159 | 2268 |
Item it; |
| 2160 | 2269 |
const typename Map::Notifier* nf = Map::notifier(); |
| 2161 | 2270 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
| 2162 | 2271 |
Map::set(it, _inv_map.size()); |
| 2163 | 2272 |
_inv_map.push_back(it); |
| 2164 | 2273 |
} |
| 2165 | 2274 |
} |
| 2166 | 2275 |
|
| 2167 | 2276 |
/// \brief Clear the keys from the map. |
| 2168 | 2277 |
/// |
| 2169 | 2278 |
/// Clear the keys from the map. It is called by the |
| 2170 | 2279 |
/// \c AlterationNotifier. |
| 2171 | 2280 |
virtual void clear() {
|
| 2172 | 2281 |
_inv_map.clear(); |
| 2173 | 2282 |
Map::clear(); |
| 2174 | 2283 |
} |
| 2175 | 2284 |
|
| 2176 | 2285 |
public: |
| 2177 | 2286 |
|
| 2178 | 2287 |
/// \brief Returns the maximal value plus one. |
| 2179 | 2288 |
/// |
| 2180 | 2289 |
/// Returns the maximal value plus one in the map. |
| 2181 | 2290 |
unsigned int size() const {
|
| 2182 | 2291 |
return _inv_map.size(); |
| 2183 | 2292 |
} |
| 2184 | 2293 |
|
| 2185 | 2294 |
/// \brief Swaps the position of the two items in the map. |
| 2186 | 2295 |
/// |
| 2187 | 2296 |
/// Swaps the position of the two items in the map. |
| 2188 | 2297 |
void swap(const Item& p, const Item& q) {
|
| 2189 | 2298 |
int pi = Map::operator[](p); |
| 2190 | 2299 |
int qi = Map::operator[](q); |
| 2191 | 2300 |
Map::set(p, qi); |
| 2192 | 2301 |
_inv_map[qi] = p; |
| 2193 | 2302 |
Map::set(q, pi); |
| 2194 | 2303 |
_inv_map[pi] = q; |
| 2195 | 2304 |
} |
| 2196 | 2305 |
|
| 2197 |
/// \brief Gives back the \e |
|
| 2306 |
/// \brief Gives back the \e range \e id of the item |
|
| 2198 | 2307 |
/// |
| 2199 |
/// Gives back the |
|
| 2308 |
/// Gives back the \e range \e id of the item. |
|
| 2200 | 2309 |
int operator[](const Item& item) const {
|
| 2201 | 2310 |
return Map::operator[](item); |
| 2202 | 2311 |
} |
| 2203 | 2312 |
|
| 2204 |
/// \brief Gives back the item |
|
| 2313 |
/// \brief Gives back the item belonging to a \e range \e id |
|
| 2205 | 2314 |
/// |
| 2206 |
/// Gives back |
|
| 2315 |
/// Gives back the item belonging to the given \e range \e id. |
|
| 2207 | 2316 |
Item operator()(int id) const {
|
| 2208 | 2317 |
return _inv_map[id]; |
| 2209 | 2318 |
} |
| 2210 | 2319 |
|
| 2211 | 2320 |
private: |
| 2212 | 2321 |
|
| 2213 | 2322 |
typedef std::vector<Item> Container; |
| 2214 | 2323 |
Container _inv_map; |
| 2215 | 2324 |
|
| 2216 | 2325 |
public: |
| 2217 |
|
|
| 2326 |
|
|
| 2327 |
/// \brief The inverse map type of RangeIdMap. |
|
| 2218 | 2328 |
/// |
| 2219 |
/// The inverse map type of |
|
| 2329 |
/// The inverse map type of RangeIdMap. The subscript operator gives |
|
| 2330 |
/// back an item by its \e range \e id. |
|
| 2331 |
/// This type conforms to the \ref concepts::ReadMap "ReadMap" concept. |
|
| 2220 | 2332 |
class InverseMap {
|
| 2221 | 2333 |
public: |
| 2222 |
/// \brief Constructor |
|
| 2334 |
/// \brief Constructor |
|
| 2223 | 2335 |
/// |
| 2224 | 2336 |
/// Constructor of the InverseMap. |
| 2225 |
explicit InverseMap(const |
|
| 2337 |
explicit InverseMap(const RangeIdMap& inverted) |
|
| 2226 | 2338 |
: _inverted(inverted) {}
|
| 2227 | 2339 |
|
| 2228 | 2340 |
|
| 2229 | 2341 |
/// The value type of the InverseMap. |
| 2230 |
typedef typename |
|
| 2342 |
typedef typename RangeIdMap::Key Value; |
|
| 2231 | 2343 |
/// The key type of the InverseMap. |
| 2232 |
typedef typename |
|
| 2344 |
typedef typename RangeIdMap::Value Key; |
|
| 2233 | 2345 |
|
| 2234 | 2346 |
/// \brief Subscript operator. |
| 2235 | 2347 |
/// |
| 2236 | 2348 |
/// Subscript operator. It gives back the item |
| 2237 |
/// that the |
|
| 2349 |
/// that the given \e range \e id currently belongs to. |
|
| 2238 | 2350 |
Value operator[](const Key& key) const {
|
| 2239 | 2351 |
return _inverted(key); |
| 2240 | 2352 |
} |
| 2241 | 2353 |
|
| 2242 | 2354 |
/// \brief Size of the map. |
| 2243 | 2355 |
/// |
| 2244 | 2356 |
/// Returns the size of the map. |
| 2245 | 2357 |
unsigned int size() const {
|
| 2246 | 2358 |
return _inverted.size(); |
| 2247 | 2359 |
} |
| 2248 | 2360 |
|
| 2249 | 2361 |
private: |
| 2250 |
const |
|
| 2362 |
const RangeIdMap& _inverted; |
|
| 2251 | 2363 |
}; |
| 2252 | 2364 |
|
| 2253 | 2365 |
/// \brief Gives back the inverse of the map. |
| 2254 | 2366 |
/// |
| 2255 |
/// Gives back the inverse of the |
|
| 2367 |
/// Gives back the inverse of the RangeIdMap. |
|
| 2256 | 2368 |
const InverseMap inverse() const {
|
| 2257 | 2369 |
return InverseMap(*this); |
| 2258 | 2370 |
} |
| 2259 | 2371 |
}; |
| 2260 | 2372 |
|
| 2261 |
/// \brief Returns |
|
| 2373 |
/// \brief Returns a \c RangeIdMap class. |
|
| 2262 | 2374 |
/// |
| 2263 |
/// |
|
| 2375 |
/// This function just returns an \c RangeIdMap class. |
|
| 2376 |
/// \relates RangeIdMap |
|
| 2377 |
template <typename K, typename GR> |
|
| 2378 |
inline RangeIdMap<GR, K> rangeIdMap(const GR& graph) {
|
|
| 2379 |
return RangeIdMap<GR, K>(graph); |
|
| 2380 |
} |
|
| 2381 |
|
|
| 2382 |
/// \brief Dynamic iterable \c bool map. |
|
| 2383 |
/// |
|
| 2384 |
/// This class provides a special graph map type which can store a |
|
| 2385 |
/// \c bool value for graph items (\c Node, \c Arc or \c Edge). |
|
| 2386 |
/// For both \c true and \c false values it is possible to iterate on |
|
| 2387 |
/// the keys mapped to the value. |
|
| 2388 |
/// |
|
| 2389 |
/// This type is a reference map, so it can be modified with the |
|
| 2390 |
/// subscript operator. |
|
| 2391 |
/// |
|
| 2392 |
/// \tparam GR The graph type. |
|
| 2393 |
/// \tparam K The key type of the map (\c GR::Node, \c GR::Arc or |
|
| 2394 |
/// \c GR::Edge). |
|
| 2395 |
/// |
|
| 2396 |
/// \see IterableIntMap, IterableValueMap |
|
| 2397 |
/// \see CrossRefMap |
|
| 2398 |
template <typename GR, typename K> |
|
| 2399 |
class IterableBoolMap |
|
| 2400 |
: protected ItemSetTraits<GR, K>::template Map<int>::Type {
|
|
| 2401 |
private: |
|
| 2402 |
typedef GR Graph; |
|
| 2403 |
|
|
| 2404 |
typedef typename ItemSetTraits<GR, K>::ItemIt KeyIt; |
|
| 2405 |
typedef typename ItemSetTraits<GR, K>::template Map<int>::Type Parent; |
|
| 2406 |
|
|
| 2407 |
std::vector<K> _array; |
|
| 2408 |
int _sep; |
|
| 2409 |
|
|
| 2410 |
public: |
|
| 2411 |
|
|
| 2412 |
/// Indicates that the map is reference map. |
|
| 2413 |
typedef True ReferenceMapTag; |
|
| 2414 |
|
|
| 2415 |
/// The key type |
|
| 2416 |
typedef K Key; |
|
| 2417 |
/// The value type |
|
| 2418 |
typedef bool Value; |
|
| 2419 |
/// The const reference type. |
|
| 2420 |
typedef const Value& ConstReference; |
|
| 2421 |
|
|
| 2422 |
private: |
|
| 2423 |
|
|
| 2424 |
int position(const Key& key) const {
|
|
| 2425 |
return Parent::operator[](key); |
|
| 2426 |
} |
|
| 2427 |
|
|
| 2428 |
public: |
|
| 2429 |
|
|
| 2430 |
/// \brief Reference to the value of the map. |
|
| 2431 |
/// |
|
| 2432 |
/// This class is similar to the \c bool type. It can be converted to |
|
| 2433 |
/// \c bool and it provides the same operators. |
|
| 2434 |
class Reference {
|
|
| 2435 |
friend class IterableBoolMap; |
|
| 2436 |
private: |
|
| 2437 |
Reference(IterableBoolMap& map, const Key& key) |
|
| 2438 |
: _key(key), _map(map) {}
|
|
| 2439 |
public: |
|
| 2440 |
|
|
| 2441 |
Reference& operator=(const Reference& value) {
|
|
| 2442 |
_map.set(_key, static_cast<bool>(value)); |
|
| 2443 |
return *this; |
|
| 2444 |
} |
|
| 2445 |
|
|
| 2446 |
operator bool() const {
|
|
| 2447 |
return static_cast<const IterableBoolMap&>(_map)[_key]; |
|
| 2448 |
} |
|
| 2449 |
|
|
| 2450 |
Reference& operator=(bool value) {
|
|
| 2451 |
_map.set(_key, value); |
|
| 2452 |
return *this; |
|
| 2453 |
} |
|
| 2454 |
Reference& operator&=(bool value) {
|
|
| 2455 |
_map.set(_key, _map[_key] & value); |
|
| 2456 |
return *this; |
|
| 2457 |
} |
|
| 2458 |
Reference& operator|=(bool value) {
|
|
| 2459 |
_map.set(_key, _map[_key] | value); |
|
| 2460 |
return *this; |
|
| 2461 |
} |
|
| 2462 |
Reference& operator^=(bool value) {
|
|
| 2463 |
_map.set(_key, _map[_key] ^ value); |
|
| 2464 |
return *this; |
|
| 2465 |
} |
|
| 2466 |
private: |
|
| 2467 |
Key _key; |
|
| 2468 |
IterableBoolMap& _map; |
|
| 2469 |
}; |
|
| 2470 |
|
|
| 2471 |
/// \brief Constructor of the map with a default value. |
|
| 2472 |
/// |
|
| 2473 |
/// Constructor of the map with a default value. |
|
| 2474 |
explicit IterableBoolMap(const Graph& graph, bool def = false) |
|
| 2475 |
: Parent(graph) {
|
|
| 2476 |
typename Parent::Notifier* nf = Parent::notifier(); |
|
| 2477 |
Key it; |
|
| 2478 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
|
| 2479 |
Parent::set(it, _array.size()); |
|
| 2480 |
_array.push_back(it); |
|
| 2481 |
} |
|
| 2482 |
_sep = (def ? _array.size() : 0); |
|
| 2483 |
} |
|
| 2484 |
|
|
| 2485 |
/// \brief Const subscript operator of the map. |
|
| 2486 |
/// |
|
| 2487 |
/// Const subscript operator of the map. |
|
| 2488 |
bool operator[](const Key& key) const {
|
|
| 2489 |
return position(key) < _sep; |
|
| 2490 |
} |
|
| 2491 |
|
|
| 2492 |
/// \brief Subscript operator of the map. |
|
| 2493 |
/// |
|
| 2494 |
/// Subscript operator of the map. |
|
| 2495 |
Reference operator[](const Key& key) {
|
|
| 2496 |
return Reference(*this, key); |
|
| 2497 |
} |
|
| 2498 |
|
|
| 2499 |
/// \brief Set operation of the map. |
|
| 2500 |
/// |
|
| 2501 |
/// Set operation of the map. |
|
| 2502 |
void set(const Key& key, bool value) {
|
|
| 2503 |
int pos = position(key); |
|
| 2504 |
if (value) {
|
|
| 2505 |
if (pos < _sep) return; |
|
| 2506 |
Key tmp = _array[_sep]; |
|
| 2507 |
_array[_sep] = key; |
|
| 2508 |
Parent::set(key, _sep); |
|
| 2509 |
_array[pos] = tmp; |
|
| 2510 |
Parent::set(tmp, pos); |
|
| 2511 |
++_sep; |
|
| 2512 |
} else {
|
|
| 2513 |
if (pos >= _sep) return; |
|
| 2514 |
--_sep; |
|
| 2515 |
Key tmp = _array[_sep]; |
|
| 2516 |
_array[_sep] = key; |
|
| 2517 |
Parent::set(key, _sep); |
|
| 2518 |
_array[pos] = tmp; |
|
| 2519 |
Parent::set(tmp, pos); |
|
| 2520 |
} |
|
| 2521 |
} |
|
| 2522 |
|
|
| 2523 |
/// \brief Set all items. |
|
| 2524 |
/// |
|
| 2525 |
/// Set all items in the map. |
|
| 2526 |
/// \note Constant time operation. |
|
| 2527 |
void setAll(bool value) {
|
|
| 2528 |
_sep = (value ? _array.size() : 0); |
|
| 2529 |
} |
|
| 2530 |
|
|
| 2531 |
/// \brief Returns the number of the keys mapped to \c true. |
|
| 2532 |
/// |
|
| 2533 |
/// Returns the number of the keys mapped to \c true. |
|
| 2534 |
int trueNum() const {
|
|
| 2535 |
return _sep; |
|
| 2536 |
} |
|
| 2537 |
|
|
| 2538 |
/// \brief Returns the number of the keys mapped to \c false. |
|
| 2539 |
/// |
|
| 2540 |
/// Returns the number of the keys mapped to \c false. |
|
| 2541 |
int falseNum() const {
|
|
| 2542 |
return _array.size() - _sep; |
|
| 2543 |
} |
|
| 2544 |
|
|
| 2545 |
/// \brief Iterator for the keys mapped to \c true. |
|
| 2546 |
/// |
|
| 2547 |
/// Iterator for the keys mapped to \c true. It works |
|
| 2548 |
/// like a graph item iterator, it can be converted to |
|
| 2549 |
/// the key type of the map, incremented with \c ++ operator, and |
|
| 2550 |
/// if the iterator leaves the last valid key, it will be equal to |
|
| 2551 |
/// \c INVALID. |
|
| 2552 |
class TrueIt : public Key {
|
|
| 2553 |
public: |
|
| 2554 |
typedef Key Parent; |
|
| 2555 |
|
|
| 2556 |
/// \brief Creates an iterator. |
|
| 2557 |
/// |
|
| 2558 |
/// Creates an iterator. It iterates on the |
|
| 2559 |
/// keys mapped to \c true. |
|
| 2560 |
/// \param map The IterableBoolMap. |
|
| 2561 |
explicit TrueIt(const IterableBoolMap& map) |
|
| 2562 |
: Parent(map._sep > 0 ? map._array[map._sep - 1] : INVALID), |
|
| 2563 |
_map(&map) {}
|
|
| 2564 |
|
|
| 2565 |
/// \brief Invalid constructor \& conversion. |
|
| 2566 |
/// |
|
| 2567 |
/// This constructor initializes the iterator to be invalid. |
|
| 2568 |
/// \sa Invalid for more details. |
|
| 2569 |
TrueIt(Invalid) : Parent(INVALID), _map(0) {}
|
|
| 2570 |
|
|
| 2571 |
/// \brief Increment operator. |
|
| 2572 |
/// |
|
| 2573 |
/// Increment operator. |
|
| 2574 |
TrueIt& operator++() {
|
|
| 2575 |
int pos = _map->position(*this); |
|
| 2576 |
Parent::operator=(pos > 0 ? _map->_array[pos - 1] : INVALID); |
|
| 2577 |
return *this; |
|
| 2578 |
} |
|
| 2579 |
|
|
| 2580 |
private: |
|
| 2581 |
const IterableBoolMap* _map; |
|
| 2582 |
}; |
|
| 2583 |
|
|
| 2584 |
/// \brief Iterator for the keys mapped to \c false. |
|
| 2585 |
/// |
|
| 2586 |
/// Iterator for the keys mapped to \c false. It works |
|
| 2587 |
/// like a graph item iterator, it can be converted to |
|
| 2588 |
/// the key type of the map, incremented with \c ++ operator, and |
|
| 2589 |
/// if the iterator leaves the last valid key, it will be equal to |
|
| 2590 |
/// \c INVALID. |
|
| 2591 |
class FalseIt : public Key {
|
|
| 2592 |
public: |
|
| 2593 |
typedef Key Parent; |
|
| 2594 |
|
|
| 2595 |
/// \brief Creates an iterator. |
|
| 2596 |
/// |
|
| 2597 |
/// Creates an iterator. It iterates on the |
|
| 2598 |
/// keys mapped to \c false. |
|
| 2599 |
/// \param map The IterableBoolMap. |
|
| 2600 |
explicit FalseIt(const IterableBoolMap& map) |
|
| 2601 |
: Parent(map._sep < int(map._array.size()) ? |
|
| 2602 |
map._array.back() : INVALID), _map(&map) {}
|
|
| 2603 |
|
|
| 2604 |
/// \brief Invalid constructor \& conversion. |
|
| 2605 |
/// |
|
| 2606 |
/// This constructor initializes the iterator to be invalid. |
|
| 2607 |
/// \sa Invalid for more details. |
|
| 2608 |
FalseIt(Invalid) : Parent(INVALID), _map(0) {}
|
|
| 2609 |
|
|
| 2610 |
/// \brief Increment operator. |
|
| 2611 |
/// |
|
| 2612 |
/// Increment operator. |
|
| 2613 |
FalseIt& operator++() {
|
|
| 2614 |
int pos = _map->position(*this); |
|
| 2615 |
Parent::operator=(pos > _map->_sep ? _map->_array[pos - 1] : INVALID); |
|
| 2616 |
return *this; |
|
| 2617 |
} |
|
| 2618 |
|
|
| 2619 |
private: |
|
| 2620 |
const IterableBoolMap* _map; |
|
| 2621 |
}; |
|
| 2622 |
|
|
| 2623 |
/// \brief Iterator for the keys mapped to a given value. |
|
| 2624 |
/// |
|
| 2625 |
/// Iterator for the keys mapped to a given value. It works |
|
| 2626 |
/// like a graph item iterator, it can be converted to |
|
| 2627 |
/// the key type of the map, incremented with \c ++ operator, and |
|
| 2628 |
/// if the iterator leaves the last valid key, it will be equal to |
|
| 2629 |
/// \c INVALID. |
|
| 2630 |
class ItemIt : public Key {
|
|
| 2631 |
public: |
|
| 2632 |
typedef Key Parent; |
|
| 2633 |
|
|
| 2634 |
/// \brief Creates an iterator with a value. |
|
| 2635 |
/// |
|
| 2636 |
/// Creates an iterator with a value. It iterates on the |
|
| 2637 |
/// keys mapped to the given value. |
|
| 2638 |
/// \param map The IterableBoolMap. |
|
| 2639 |
/// \param value The value. |
|
| 2640 |
ItemIt(const IterableBoolMap& map, bool value) |
|
| 2641 |
: Parent(value ? |
|
| 2642 |
(map._sep > 0 ? |
|
| 2643 |
map._array[map._sep - 1] : INVALID) : |
|
| 2644 |
(map._sep < int(map._array.size()) ? |
|
| 2645 |
map._array.back() : INVALID)), _map(&map) {}
|
|
| 2646 |
|
|
| 2647 |
/// \brief Invalid constructor \& conversion. |
|
| 2648 |
/// |
|
| 2649 |
/// This constructor initializes the iterator to be invalid. |
|
| 2650 |
/// \sa Invalid for more details. |
|
| 2651 |
ItemIt(Invalid) : Parent(INVALID), _map(0) {}
|
|
| 2652 |
|
|
| 2653 |
/// \brief Increment operator. |
|
| 2654 |
/// |
|
| 2655 |
/// Increment operator. |
|
| 2656 |
ItemIt& operator++() {
|
|
| 2657 |
int pos = _map->position(*this); |
|
| 2658 |
int _sep = pos >= _map->_sep ? _map->_sep : 0; |
|
| 2659 |
Parent::operator=(pos > _sep ? _map->_array[pos - 1] : INVALID); |
|
| 2660 |
return *this; |
|
| 2661 |
} |
|
| 2662 |
|
|
| 2663 |
private: |
|
| 2664 |
const IterableBoolMap* _map; |
|
| 2665 |
}; |
|
| 2666 |
|
|
| 2667 |
protected: |
|
| 2668 |
|
|
| 2669 |
virtual void add(const Key& key) {
|
|
| 2670 |
Parent::add(key); |
|
| 2671 |
Parent::set(key, _array.size()); |
|
| 2672 |
_array.push_back(key); |
|
| 2673 |
} |
|
| 2674 |
|
|
| 2675 |
virtual void add(const std::vector<Key>& keys) {
|
|
| 2676 |
Parent::add(keys); |
|
| 2677 |
for (int i = 0; i < int(keys.size()); ++i) {
|
|
| 2678 |
Parent::set(keys[i], _array.size()); |
|
| 2679 |
_array.push_back(keys[i]); |
|
| 2680 |
} |
|
| 2681 |
} |
|
| 2682 |
|
|
| 2683 |
virtual void erase(const Key& key) {
|
|
| 2684 |
int pos = position(key); |
|
| 2685 |
if (pos < _sep) {
|
|
| 2686 |
--_sep; |
|
| 2687 |
Parent::set(_array[_sep], pos); |
|
| 2688 |
_array[pos] = _array[_sep]; |
|
| 2689 |
Parent::set(_array.back(), _sep); |
|
| 2690 |
_array[_sep] = _array.back(); |
|
| 2691 |
_array.pop_back(); |
|
| 2692 |
} else {
|
|
| 2693 |
Parent::set(_array.back(), pos); |
|
| 2694 |
_array[pos] = _array.back(); |
|
| 2695 |
_array.pop_back(); |
|
| 2696 |
} |
|
| 2697 |
Parent::erase(key); |
|
| 2698 |
} |
|
| 2699 |
|
|
| 2700 |
virtual void erase(const std::vector<Key>& keys) {
|
|
| 2701 |
for (int i = 0; i < int(keys.size()); ++i) {
|
|
| 2702 |
int pos = position(keys[i]); |
|
| 2703 |
if (pos < _sep) {
|
|
| 2704 |
--_sep; |
|
| 2705 |
Parent::set(_array[_sep], pos); |
|
| 2706 |
_array[pos] = _array[_sep]; |
|
| 2707 |
Parent::set(_array.back(), _sep); |
|
| 2708 |
_array[_sep] = _array.back(); |
|
| 2709 |
_array.pop_back(); |
|
| 2710 |
} else {
|
|
| 2711 |
Parent::set(_array.back(), pos); |
|
| 2712 |
_array[pos] = _array.back(); |
|
| 2713 |
_array.pop_back(); |
|
| 2714 |
} |
|
| 2715 |
} |
|
| 2716 |
Parent::erase(keys); |
|
| 2717 |
} |
|
| 2718 |
|
|
| 2719 |
virtual void build() {
|
|
| 2720 |
Parent::build(); |
|
| 2721 |
typename Parent::Notifier* nf = Parent::notifier(); |
|
| 2722 |
Key it; |
|
| 2723 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
|
| 2724 |
Parent::set(it, _array.size()); |
|
| 2725 |
_array.push_back(it); |
|
| 2726 |
} |
|
| 2727 |
_sep = 0; |
|
| 2728 |
} |
|
| 2729 |
|
|
| 2730 |
virtual void clear() {
|
|
| 2731 |
_array.clear(); |
|
| 2732 |
_sep = 0; |
|
| 2733 |
Parent::clear(); |
|
| 2734 |
} |
|
| 2735 |
|
|
| 2736 |
}; |
|
| 2737 |
|
|
| 2738 |
|
|
| 2739 |
namespace _maps_bits {
|
|
| 2740 |
template <typename Item> |
|
| 2741 |
struct IterableIntMapNode {
|
|
| 2742 |
IterableIntMapNode() : value(-1) {}
|
|
| 2743 |
IterableIntMapNode(int _value) : value(_value) {}
|
|
| 2744 |
Item prev, next; |
|
| 2745 |
int value; |
|
| 2746 |
}; |
|
| 2747 |
} |
|
| 2748 |
|
|
| 2749 |
/// \brief Dynamic iterable integer map. |
|
| 2750 |
/// |
|
| 2751 |
/// This class provides a special graph map type which can store an |
|
| 2752 |
/// integer value for graph items (\c Node, \c Arc or \c Edge). |
|
| 2753 |
/// For each non-negative value it is possible to iterate on the keys |
|
| 2754 |
/// mapped to the value. |
|
| 2755 |
/// |
|
| 2756 |
/// This map is intended to be used with small integer values, for which |
|
| 2757 |
/// it is efficient, and supports iteration only for non-negative values. |
|
| 2758 |
/// If you need large values and/or iteration for negative integers, |
|
| 2759 |
/// consider to use \ref IterableValueMap instead. |
|
| 2760 |
/// |
|
| 2761 |
/// This type is a reference map, so it can be modified with the |
|
| 2762 |
/// subscript operator. |
|
| 2763 |
/// |
|
| 2764 |
/// \note The size of the data structure depends on the largest |
|
| 2765 |
/// value in the map. |
|
| 2766 |
/// |
|
| 2767 |
/// \tparam GR The graph type. |
|
| 2768 |
/// \tparam K The key type of the map (\c GR::Node, \c GR::Arc or |
|
| 2769 |
/// \c GR::Edge). |
|
| 2770 |
/// |
|
| 2771 |
/// \see IterableBoolMap, IterableValueMap |
|
| 2772 |
/// \see CrossRefMap |
|
| 2773 |
template <typename GR, typename K> |
|
| 2774 |
class IterableIntMap |
|
| 2775 |
: protected ItemSetTraits<GR, K>:: |
|
| 2776 |
template Map<_maps_bits::IterableIntMapNode<K> >::Type {
|
|
| 2777 |
public: |
|
| 2778 |
typedef typename ItemSetTraits<GR, K>:: |
|
| 2779 |
template Map<_maps_bits::IterableIntMapNode<K> >::Type Parent; |
|
| 2780 |
|
|
| 2781 |
/// The key type |
|
| 2782 |
typedef K Key; |
|
| 2783 |
/// The value type |
|
| 2784 |
typedef int Value; |
|
| 2785 |
/// The graph type |
|
| 2786 |
typedef GR Graph; |
|
| 2787 |
|
|
| 2788 |
/// \brief Constructor of the map. |
|
| 2789 |
/// |
|
| 2790 |
/// Constructor of the map. It sets all values to -1. |
|
| 2791 |
explicit IterableIntMap(const Graph& graph) |
|
| 2792 |
: Parent(graph) {}
|
|
| 2793 |
|
|
| 2794 |
/// \brief Constructor of the map with a given value. |
|
| 2795 |
/// |
|
| 2796 |
/// Constructor of the map with a given value. |
|
| 2797 |
explicit IterableIntMap(const Graph& graph, int value) |
|
| 2798 |
: Parent(graph, _maps_bits::IterableIntMapNode<K>(value)) {
|
|
| 2799 |
if (value >= 0) {
|
|
| 2800 |
for (typename Parent::ItemIt it(*this); it != INVALID; ++it) {
|
|
| 2801 |
lace(it); |
|
| 2802 |
} |
|
| 2803 |
} |
|
| 2804 |
} |
|
| 2805 |
|
|
| 2806 |
private: |
|
| 2807 |
|
|
| 2808 |
void unlace(const Key& key) {
|
|
| 2809 |
typename Parent::Value& node = Parent::operator[](key); |
|
| 2810 |
if (node.value < 0) return; |
|
| 2811 |
if (node.prev != INVALID) {
|
|
| 2812 |
Parent::operator[](node.prev).next = node.next; |
|
| 2813 |
} else {
|
|
| 2814 |
_first[node.value] = node.next; |
|
| 2815 |
} |
|
| 2816 |
if (node.next != INVALID) {
|
|
| 2817 |
Parent::operator[](node.next).prev = node.prev; |
|
| 2818 |
} |
|
| 2819 |
while (!_first.empty() && _first.back() == INVALID) {
|
|
| 2820 |
_first.pop_back(); |
|
| 2821 |
} |
|
| 2822 |
} |
|
| 2823 |
|
|
| 2824 |
void lace(const Key& key) {
|
|
| 2825 |
typename Parent::Value& node = Parent::operator[](key); |
|
| 2826 |
if (node.value < 0) return; |
|
| 2827 |
if (node.value >= int(_first.size())) {
|
|
| 2828 |
_first.resize(node.value + 1, INVALID); |
|
| 2829 |
} |
|
| 2830 |
node.prev = INVALID; |
|
| 2831 |
node.next = _first[node.value]; |
|
| 2832 |
if (node.next != INVALID) {
|
|
| 2833 |
Parent::operator[](node.next).prev = key; |
|
| 2834 |
} |
|
| 2835 |
_first[node.value] = key; |
|
| 2836 |
} |
|
| 2837 |
|
|
| 2838 |
public: |
|
| 2839 |
|
|
| 2840 |
/// Indicates that the map is reference map. |
|
| 2841 |
typedef True ReferenceMapTag; |
|
| 2842 |
|
|
| 2843 |
/// \brief Reference to the value of the map. |
|
| 2844 |
/// |
|
| 2845 |
/// This class is similar to the \c int type. It can |
|
| 2846 |
/// be converted to \c int and it has the same operators. |
|
| 2847 |
class Reference {
|
|
| 2848 |
friend class IterableIntMap; |
|
| 2849 |
private: |
|
| 2850 |
Reference(IterableIntMap& map, const Key& key) |
|
| 2851 |
: _key(key), _map(map) {}
|
|
| 2852 |
public: |
|
| 2853 |
|
|
| 2854 |
Reference& operator=(const Reference& value) {
|
|
| 2855 |
_map.set(_key, static_cast<const int&>(value)); |
|
| 2856 |
return *this; |
|
| 2857 |
} |
|
| 2858 |
|
|
| 2859 |
operator const int&() const {
|
|
| 2860 |
return static_cast<const IterableIntMap&>(_map)[_key]; |
|
| 2861 |
} |
|
| 2862 |
|
|
| 2863 |
Reference& operator=(int value) {
|
|
| 2864 |
_map.set(_key, value); |
|
| 2865 |
return *this; |
|
| 2866 |
} |
|
| 2867 |
Reference& operator++() {
|
|
| 2868 |
_map.set(_key, _map[_key] + 1); |
|
| 2869 |
return *this; |
|
| 2870 |
} |
|
| 2871 |
int operator++(int) {
|
|
| 2872 |
int value = _map[_key]; |
|
| 2873 |
_map.set(_key, value + 1); |
|
| 2874 |
return value; |
|
| 2875 |
} |
|
| 2876 |
Reference& operator--() {
|
|
| 2877 |
_map.set(_key, _map[_key] - 1); |
|
| 2878 |
return *this; |
|
| 2879 |
} |
|
| 2880 |
int operator--(int) {
|
|
| 2881 |
int value = _map[_key]; |
|
| 2882 |
_map.set(_key, value - 1); |
|
| 2883 |
return value; |
|
| 2884 |
} |
|
| 2885 |
Reference& operator+=(int value) {
|
|
| 2886 |
_map.set(_key, _map[_key] + value); |
|
| 2887 |
return *this; |
|
| 2888 |
} |
|
| 2889 |
Reference& operator-=(int value) {
|
|
| 2890 |
_map.set(_key, _map[_key] - value); |
|
| 2891 |
return *this; |
|
| 2892 |
} |
|
| 2893 |
Reference& operator*=(int value) {
|
|
| 2894 |
_map.set(_key, _map[_key] * value); |
|
| 2895 |
return *this; |
|
| 2896 |
} |
|
| 2897 |
Reference& operator/=(int value) {
|
|
| 2898 |
_map.set(_key, _map[_key] / value); |
|
| 2899 |
return *this; |
|
| 2900 |
} |
|
| 2901 |
Reference& operator%=(int value) {
|
|
| 2902 |
_map.set(_key, _map[_key] % value); |
|
| 2903 |
return *this; |
|
| 2904 |
} |
|
| 2905 |
Reference& operator&=(int value) {
|
|
| 2906 |
_map.set(_key, _map[_key] & value); |
|
| 2907 |
return *this; |
|
| 2908 |
} |
|
| 2909 |
Reference& operator|=(int value) {
|
|
| 2910 |
_map.set(_key, _map[_key] | value); |
|
| 2911 |
return *this; |
|
| 2912 |
} |
|
| 2913 |
Reference& operator^=(int value) {
|
|
| 2914 |
_map.set(_key, _map[_key] ^ value); |
|
| 2915 |
return *this; |
|
| 2916 |
} |
|
| 2917 |
Reference& operator<<=(int value) {
|
|
| 2918 |
_map.set(_key, _map[_key] << value); |
|
| 2919 |
return *this; |
|
| 2920 |
} |
|
| 2921 |
Reference& operator>>=(int value) {
|
|
| 2922 |
_map.set(_key, _map[_key] >> value); |
|
| 2923 |
return *this; |
|
| 2924 |
} |
|
| 2925 |
|
|
| 2926 |
private: |
|
| 2927 |
Key _key; |
|
| 2928 |
IterableIntMap& _map; |
|
| 2929 |
}; |
|
| 2930 |
|
|
| 2931 |
/// The const reference type. |
|
| 2932 |
typedef const Value& ConstReference; |
|
| 2933 |
|
|
| 2934 |
/// \brief Gives back the maximal value plus one. |
|
| 2935 |
/// |
|
| 2936 |
/// Gives back the maximal value plus one. |
|
| 2937 |
int size() const {
|
|
| 2938 |
return _first.size(); |
|
| 2939 |
} |
|
| 2940 |
|
|
| 2941 |
/// \brief Set operation of the map. |
|
| 2942 |
/// |
|
| 2943 |
/// Set operation of the map. |
|
| 2944 |
void set(const Key& key, const Value& value) {
|
|
| 2945 |
unlace(key); |
|
| 2946 |
Parent::operator[](key).value = value; |
|
| 2947 |
lace(key); |
|
| 2948 |
} |
|
| 2949 |
|
|
| 2950 |
/// \brief Const subscript operator of the map. |
|
| 2951 |
/// |
|
| 2952 |
/// Const subscript operator of the map. |
|
| 2953 |
const Value& operator[](const Key& key) const {
|
|
| 2954 |
return Parent::operator[](key).value; |
|
| 2955 |
} |
|
| 2956 |
|
|
| 2957 |
/// \brief Subscript operator of the map. |
|
| 2958 |
/// |
|
| 2959 |
/// Subscript operator of the map. |
|
| 2960 |
Reference operator[](const Key& key) {
|
|
| 2961 |
return Reference(*this, key); |
|
| 2962 |
} |
|
| 2963 |
|
|
| 2964 |
/// \brief Iterator for the keys with the same value. |
|
| 2965 |
/// |
|
| 2966 |
/// Iterator for the keys with the same value. It works |
|
| 2967 |
/// like a graph item iterator, it can be converted to |
|
| 2968 |
/// the item type of the map, incremented with \c ++ operator, and |
|
| 2969 |
/// if the iterator leaves the last valid item, it will be equal to |
|
| 2970 |
/// \c INVALID. |
|
| 2971 |
class ItemIt : public Key {
|
|
| 2972 |
public: |
|
| 2973 |
typedef Key Parent; |
|
| 2974 |
|
|
| 2975 |
/// \brief Invalid constructor \& conversion. |
|
| 2976 |
/// |
|
| 2977 |
/// This constructor initializes the iterator to be invalid. |
|
| 2978 |
/// \sa Invalid for more details. |
|
| 2979 |
ItemIt(Invalid) : Parent(INVALID), _map(0) {}
|
|
| 2980 |
|
|
| 2981 |
/// \brief Creates an iterator with a value. |
|
| 2982 |
/// |
|
| 2983 |
/// Creates an iterator with a value. It iterates on the |
|
| 2984 |
/// keys mapped to the given value. |
|
| 2985 |
/// \param map The IterableIntMap. |
|
| 2986 |
/// \param value The value. |
|
| 2987 |
ItemIt(const IterableIntMap& map, int value) : _map(&map) {
|
|
| 2988 |
if (value < 0 || value >= int(_map->_first.size())) {
|
|
| 2989 |
Parent::operator=(INVALID); |
|
| 2990 |
} else {
|
|
| 2991 |
Parent::operator=(_map->_first[value]); |
|
| 2992 |
} |
|
| 2993 |
} |
|
| 2994 |
|
|
| 2995 |
/// \brief Increment operator. |
|
| 2996 |
/// |
|
| 2997 |
/// Increment operator. |
|
| 2998 |
ItemIt& operator++() {
|
|
| 2999 |
Parent::operator=(_map->IterableIntMap::Parent:: |
|
| 3000 |
operator[](static_cast<Parent&>(*this)).next); |
|
| 3001 |
return *this; |
|
| 3002 |
} |
|
| 3003 |
|
|
| 3004 |
private: |
|
| 3005 |
const IterableIntMap* _map; |
|
| 3006 |
}; |
|
| 3007 |
|
|
| 3008 |
protected: |
|
| 3009 |
|
|
| 3010 |
virtual void erase(const Key& key) {
|
|
| 3011 |
unlace(key); |
|
| 3012 |
Parent::erase(key); |
|
| 3013 |
} |
|
| 3014 |
|
|
| 3015 |
virtual void erase(const std::vector<Key>& keys) {
|
|
| 3016 |
for (int i = 0; i < int(keys.size()); ++i) {
|
|
| 3017 |
unlace(keys[i]); |
|
| 3018 |
} |
|
| 3019 |
Parent::erase(keys); |
|
| 3020 |
} |
|
| 3021 |
|
|
| 3022 |
virtual void clear() {
|
|
| 3023 |
_first.clear(); |
|
| 3024 |
Parent::clear(); |
|
| 3025 |
} |
|
| 3026 |
|
|
| 3027 |
private: |
|
| 3028 |
std::vector<Key> _first; |
|
| 3029 |
}; |
|
| 3030 |
|
|
| 3031 |
namespace _maps_bits {
|
|
| 3032 |
template <typename Item, typename Value> |
|
| 3033 |
struct IterableValueMapNode {
|
|
| 3034 |
IterableValueMapNode(Value _value = Value()) : value(_value) {}
|
|
| 3035 |
Item prev, next; |
|
| 3036 |
Value value; |
|
| 3037 |
}; |
|
| 3038 |
} |
|
| 3039 |
|
|
| 3040 |
/// \brief Dynamic iterable map for comparable values. |
|
| 3041 |
/// |
|
| 3042 |
/// This class provides a special graph map type which can store a |
|
| 3043 |
/// comparable value for graph items (\c Node, \c Arc or \c Edge). |
|
| 3044 |
/// For each value it is possible to iterate on the keys mapped to |
|
| 3045 |
/// the value (\c ItemIt), and the values of the map can be accessed |
|
| 3046 |
/// with an STL compatible forward iterator (\c ValueIt). |
|
| 3047 |
/// The map stores a linked list for each value, which contains |
|
| 3048 |
/// the items mapped to the value, and the used values are stored |
|
| 3049 |
/// in balanced binary tree (\c std::map). |
|
| 3050 |
/// |
|
| 3051 |
/// \ref IterableBoolMap and \ref IterableIntMap are similar classes |
|
| 3052 |
/// specialized for \c bool and \c int values, respectively. |
|
| 3053 |
/// |
|
| 3054 |
/// This type is not reference map, so it cannot be modified with |
|
| 3055 |
/// the subscript operator. |
|
| 3056 |
/// |
|
| 3057 |
/// \tparam GR The graph type. |
|
| 3058 |
/// \tparam K The key type of the map (\c GR::Node, \c GR::Arc or |
|
| 3059 |
/// \c GR::Edge). |
|
| 3060 |
/// \tparam V The value type of the map. It can be any comparable |
|
| 3061 |
/// value type. |
|
| 3062 |
/// |
|
| 3063 |
/// \see IterableBoolMap, IterableIntMap |
|
| 3064 |
/// \see CrossRefMap |
|
| 3065 |
template <typename GR, typename K, typename V> |
|
| 3066 |
class IterableValueMap |
|
| 3067 |
: protected ItemSetTraits<GR, K>:: |
|
| 3068 |
template Map<_maps_bits::IterableValueMapNode<K, V> >::Type {
|
|
| 3069 |
public: |
|
| 3070 |
typedef typename ItemSetTraits<GR, K>:: |
|
| 3071 |
template Map<_maps_bits::IterableValueMapNode<K, V> >::Type Parent; |
|
| 3072 |
|
|
| 3073 |
/// The key type |
|
| 3074 |
typedef K Key; |
|
| 3075 |
/// The value type |
|
| 3076 |
typedef V Value; |
|
| 3077 |
/// The graph type |
|
| 3078 |
typedef GR Graph; |
|
| 3079 |
|
|
| 3080 |
public: |
|
| 3081 |
|
|
| 3082 |
/// \brief Constructor of the map with a given value. |
|
| 3083 |
/// |
|
| 3084 |
/// Constructor of the map with a given value. |
|
| 3085 |
explicit IterableValueMap(const Graph& graph, |
|
| 3086 |
const Value& value = Value()) |
|
| 3087 |
: Parent(graph, _maps_bits::IterableValueMapNode<K, V>(value)) {
|
|
| 3088 |
for (typename Parent::ItemIt it(*this); it != INVALID; ++it) {
|
|
| 3089 |
lace(it); |
|
| 3090 |
} |
|
| 3091 |
} |
|
| 3092 |
|
|
| 3093 |
protected: |
|
| 3094 |
|
|
| 3095 |
void unlace(const Key& key) {
|
|
| 3096 |
typename Parent::Value& node = Parent::operator[](key); |
|
| 3097 |
if (node.prev != INVALID) {
|
|
| 3098 |
Parent::operator[](node.prev).next = node.next; |
|
| 3099 |
} else {
|
|
| 3100 |
if (node.next != INVALID) {
|
|
| 3101 |
_first[node.value] = node.next; |
|
| 3102 |
} else {
|
|
| 3103 |
_first.erase(node.value); |
|
| 3104 |
} |
|
| 3105 |
} |
|
| 3106 |
if (node.next != INVALID) {
|
|
| 3107 |
Parent::operator[](node.next).prev = node.prev; |
|
| 3108 |
} |
|
| 3109 |
} |
|
| 3110 |
|
|
| 3111 |
void lace(const Key& key) {
|
|
| 3112 |
typename Parent::Value& node = Parent::operator[](key); |
|
| 3113 |
typename std::map<Value, Key>::iterator it = _first.find(node.value); |
|
| 3114 |
if (it == _first.end()) {
|
|
| 3115 |
node.prev = node.next = INVALID; |
|
| 3116 |
_first.insert(std::make_pair(node.value, key)); |
|
| 3117 |
} else {
|
|
| 3118 |
node.prev = INVALID; |
|
| 3119 |
node.next = it->second; |
|
| 3120 |
if (node.next != INVALID) {
|
|
| 3121 |
Parent::operator[](node.next).prev = key; |
|
| 3122 |
} |
|
| 3123 |
it->second = key; |
|
| 3124 |
} |
|
| 3125 |
} |
|
| 3126 |
|
|
| 3127 |
public: |
|
| 3128 |
|
|
| 3129 |
/// \brief Forward iterator for values. |
|
| 3130 |
/// |
|
| 3131 |
/// This iterator is an STL compatible forward |
|
| 3132 |
/// iterator on the values of the map. The values can |
|
| 3133 |
/// be accessed in the <tt>[beginValue, endValue)</tt> range. |
|
| 3134 |
class ValueIt |
|
| 3135 |
: public std::iterator<std::forward_iterator_tag, Value> {
|
|
| 3136 |
friend class IterableValueMap; |
|
| 3137 |
private: |
|
| 3138 |
ValueIt(typename std::map<Value, Key>::const_iterator _it) |
|
| 3139 |
: it(_it) {}
|
|
| 3140 |
public: |
|
| 3141 |
|
|
| 3142 |
/// Constructor |
|
| 3143 |
ValueIt() {}
|
|
| 3144 |
|
|
| 3145 |
/// \e |
|
| 3146 |
ValueIt& operator++() { ++it; return *this; }
|
|
| 3147 |
/// \e |
|
| 3148 |
ValueIt operator++(int) {
|
|
| 3149 |
ValueIt tmp(*this); |
|
| 3150 |
operator++(); |
|
| 3151 |
return tmp; |
|
| 3152 |
} |
|
| 3153 |
|
|
| 3154 |
/// \e |
|
| 3155 |
const Value& operator*() const { return it->first; }
|
|
| 3156 |
/// \e |
|
| 3157 |
const Value* operator->() const { return &(it->first); }
|
|
| 3158 |
|
|
| 3159 |
/// \e |
|
| 3160 |
bool operator==(ValueIt jt) const { return it == jt.it; }
|
|
| 3161 |
/// \e |
|
| 3162 |
bool operator!=(ValueIt jt) const { return it != jt.it; }
|
|
| 3163 |
|
|
| 3164 |
private: |
|
| 3165 |
typename std::map<Value, Key>::const_iterator it; |
|
| 3166 |
}; |
|
| 3167 |
|
|
| 3168 |
/// \brief Returns an iterator to the first value. |
|
| 3169 |
/// |
|
| 3170 |
/// Returns an STL compatible iterator to the |
|
| 3171 |
/// first value of the map. The values of the |
|
| 3172 |
/// map can be accessed in the <tt>[beginValue, endValue)</tt> |
|
| 3173 |
/// range. |
|
| 3174 |
ValueIt beginValue() const {
|
|
| 3175 |
return ValueIt(_first.begin()); |
|
| 3176 |
} |
|
| 3177 |
|
|
| 3178 |
/// \brief Returns an iterator after the last value. |
|
| 3179 |
/// |
|
| 3180 |
/// Returns an STL compatible iterator after the |
|
| 3181 |
/// last value of the map. The values of the |
|
| 3182 |
/// map can be accessed in the <tt>[beginValue, endValue)</tt> |
|
| 3183 |
/// range. |
|
| 3184 |
ValueIt endValue() const {
|
|
| 3185 |
return ValueIt(_first.end()); |
|
| 3186 |
} |
|
| 3187 |
|
|
| 3188 |
/// \brief Set operation of the map. |
|
| 3189 |
/// |
|
| 3190 |
/// Set operation of the map. |
|
| 3191 |
void set(const Key& key, const Value& value) {
|
|
| 3192 |
unlace(key); |
|
| 3193 |
Parent::operator[](key).value = value; |
|
| 3194 |
lace(key); |
|
| 3195 |
} |
|
| 3196 |
|
|
| 3197 |
/// \brief Const subscript operator of the map. |
|
| 3198 |
/// |
|
| 3199 |
/// Const subscript operator of the map. |
|
| 3200 |
const Value& operator[](const Key& key) const {
|
|
| 3201 |
return Parent::operator[](key).value; |
|
| 3202 |
} |
|
| 3203 |
|
|
| 3204 |
/// \brief Iterator for the keys with the same value. |
|
| 3205 |
/// |
|
| 3206 |
/// Iterator for the keys with the same value. It works |
|
| 3207 |
/// like a graph item iterator, it can be converted to |
|
| 3208 |
/// the item type of the map, incremented with \c ++ operator, and |
|
| 3209 |
/// if the iterator leaves the last valid item, it will be equal to |
|
| 3210 |
/// \c INVALID. |
|
| 3211 |
class ItemIt : public Key {
|
|
| 3212 |
public: |
|
| 3213 |
typedef Key Parent; |
|
| 3214 |
|
|
| 3215 |
/// \brief Invalid constructor \& conversion. |
|
| 3216 |
/// |
|
| 3217 |
/// This constructor initializes the iterator to be invalid. |
|
| 3218 |
/// \sa Invalid for more details. |
|
| 3219 |
ItemIt(Invalid) : Parent(INVALID), _map(0) {}
|
|
| 3220 |
|
|
| 3221 |
/// \brief Creates an iterator with a value. |
|
| 3222 |
/// |
|
| 3223 |
/// Creates an iterator with a value. It iterates on the |
|
| 3224 |
/// keys which have the given value. |
|
| 3225 |
/// \param map The IterableValueMap |
|
| 3226 |
/// \param value The value |
|
| 3227 |
ItemIt(const IterableValueMap& map, const Value& value) : _map(&map) {
|
|
| 3228 |
typename std::map<Value, Key>::const_iterator it = |
|
| 3229 |
map._first.find(value); |
|
| 3230 |
if (it == map._first.end()) {
|
|
| 3231 |
Parent::operator=(INVALID); |
|
| 3232 |
} else {
|
|
| 3233 |
Parent::operator=(it->second); |
|
| 3234 |
} |
|
| 3235 |
} |
|
| 3236 |
|
|
| 3237 |
/// \brief Increment operator. |
|
| 3238 |
/// |
|
| 3239 |
/// Increment Operator. |
|
| 3240 |
ItemIt& operator++() {
|
|
| 3241 |
Parent::operator=(_map->IterableValueMap::Parent:: |
|
| 3242 |
operator[](static_cast<Parent&>(*this)).next); |
|
| 3243 |
return *this; |
|
| 3244 |
} |
|
| 3245 |
|
|
| 3246 |
|
|
| 3247 |
private: |
|
| 3248 |
const IterableValueMap* _map; |
|
| 3249 |
}; |
|
| 3250 |
|
|
| 3251 |
protected: |
|
| 3252 |
|
|
| 3253 |
virtual void add(const Key& key) {
|
|
| 3254 |
Parent::add(key); |
|
| 3255 |
unlace(key); |
|
| 3256 |
} |
|
| 3257 |
|
|
| 3258 |
virtual void add(const std::vector<Key>& keys) {
|
|
| 3259 |
Parent::add(keys); |
|
| 3260 |
for (int i = 0; i < int(keys.size()); ++i) {
|
|
| 3261 |
lace(keys[i]); |
|
| 3262 |
} |
|
| 3263 |
} |
|
| 3264 |
|
|
| 3265 |
virtual void erase(const Key& key) {
|
|
| 3266 |
unlace(key); |
|
| 3267 |
Parent::erase(key); |
|
| 3268 |
} |
|
| 3269 |
|
|
| 3270 |
virtual void erase(const std::vector<Key>& keys) {
|
|
| 3271 |
for (int i = 0; i < int(keys.size()); ++i) {
|
|
| 3272 |
unlace(keys[i]); |
|
| 3273 |
} |
|
| 3274 |
Parent::erase(keys); |
|
| 3275 |
} |
|
| 3276 |
|
|
| 3277 |
virtual void build() {
|
|
| 3278 |
Parent::build(); |
|
| 3279 |
for (typename Parent::ItemIt it(*this); it != INVALID; ++it) {
|
|
| 3280 |
lace(it); |
|
| 3281 |
} |
|
| 3282 |
} |
|
| 3283 |
|
|
| 3284 |
virtual void clear() {
|
|
| 3285 |
_first.clear(); |
|
| 3286 |
Parent::clear(); |
|
| 3287 |
} |
|
| 3288 |
|
|
| 3289 |
private: |
|
| 3290 |
std::map<Value, Key> _first; |
|
| 3291 |
}; |
|
| 3292 |
|
|
| 3293 |
/// \brief Map of the source nodes of arcs in a digraph. |
|
| 3294 |
/// |
|
| 3295 |
/// SourceMap provides access for the source node of each arc in a digraph, |
|
| 3296 |
/// which is returned by the \c source() function of the digraph. |
|
| 3297 |
/// \tparam GR The digraph type. |
|
| 2264 | 3298 |
/// \see TargetMap |
| 2265 |
template <typename |
|
| 3299 |
template <typename GR> |
|
| 2266 | 3300 |
class SourceMap {
|
| 2267 | 3301 |
public: |
| 2268 | 3302 |
|
| 2269 |
typedef typename Digraph::Node Value; |
|
| 2270 |
typedef typename Digraph::Arc Key; |
|
| 3303 |
/// The key type (the \c Arc type of the digraph). |
|
| 3304 |
typedef typename GR::Arc Key; |
|
| 3305 |
/// The value type (the \c Node type of the digraph). |
|
| 3306 |
typedef typename GR::Node Value; |
|
| 2271 | 3307 |
|
| 2272 | 3308 |
/// \brief Constructor |
| 2273 | 3309 |
/// |
| 2274 |
/// Constructor |
|
| 3310 |
/// Constructor. |
|
| 2275 | 3311 |
/// \param digraph The digraph that the map belongs to. |
| 2276 |
explicit SourceMap(const Digraph& digraph) : _digraph(digraph) {}
|
|
| 2277 |
|
|
| 2278 |
|
|
| 3312 |
explicit SourceMap(const GR& digraph) : _graph(digraph) {}
|
|
| 3313 |
|
|
| 3314 |
/// \brief Returns the source node of the given arc. |
|
| 2279 | 3315 |
/// |
| 2280 |
/// The subscript operator. |
|
| 2281 |
/// \param arc The arc |
|
| 2282 |
/// |
|
| 3316 |
/// Returns the source node of the given arc. |
|
| 2283 | 3317 |
Value operator[](const Key& arc) const {
|
| 2284 |
return |
|
| 3318 |
return _graph.source(arc); |
|
| 2285 | 3319 |
} |
| 2286 | 3320 |
|
| 2287 | 3321 |
private: |
| 2288 |
const |
|
| 3322 |
const GR& _graph; |
|
| 2289 | 3323 |
}; |
| 2290 | 3324 |
|
| 2291 | 3325 |
/// \brief Returns a \c SourceMap class. |
| 2292 | 3326 |
/// |
| 2293 | 3327 |
/// This function just returns an \c SourceMap class. |
| 2294 | 3328 |
/// \relates SourceMap |
| 2295 |
template <typename Digraph> |
|
| 2296 |
inline SourceMap<Digraph> sourceMap(const Digraph& digraph) {
|
|
| 2297 |
|
|
| 3329 |
template <typename GR> |
|
| 3330 |
inline SourceMap<GR> sourceMap(const GR& graph) {
|
|
| 3331 |
return SourceMap<GR>(graph); |
|
| 2298 | 3332 |
} |
| 2299 | 3333 |
|
| 2300 |
/// \brief |
|
| 3334 |
/// \brief Map of the target nodes of arcs in a digraph. |
|
| 2301 | 3335 |
/// |
| 2302 |
/// |
|
| 3336 |
/// TargetMap provides access for the target node of each arc in a digraph, |
|
| 3337 |
/// which is returned by the \c target() function of the digraph. |
|
| 3338 |
/// \tparam GR The digraph type. |
|
| 2303 | 3339 |
/// \see SourceMap |
| 2304 |
template <typename |
|
| 3340 |
template <typename GR> |
|
| 2305 | 3341 |
class TargetMap {
|
| 2306 | 3342 |
public: |
| 2307 | 3343 |
|
| 2308 |
typedef typename Digraph::Node Value; |
|
| 2309 |
typedef typename Digraph::Arc Key; |
|
| 3344 |
/// The key type (the \c Arc type of the digraph). |
|
| 3345 |
typedef typename GR::Arc Key; |
|
| 3346 |
/// The value type (the \c Node type of the digraph). |
|
| 3347 |
typedef typename GR::Node Value; |
|
| 2310 | 3348 |
|
| 2311 | 3349 |
/// \brief Constructor |
| 2312 | 3350 |
/// |
| 2313 |
/// Constructor |
|
| 3351 |
/// Constructor. |
|
| 2314 | 3352 |
/// \param digraph The digraph that the map belongs to. |
| 2315 |
explicit TargetMap(const Digraph& digraph) : _digraph(digraph) {}
|
|
| 2316 |
|
|
| 2317 |
|
|
| 3353 |
explicit TargetMap(const GR& digraph) : _graph(digraph) {}
|
|
| 3354 |
|
|
| 3355 |
/// \brief Returns the target node of the given arc. |
|
| 2318 | 3356 |
/// |
| 2319 |
/// The subscript operator. |
|
| 2320 |
/// \param e The arc |
|
| 2321 |
/// |
|
| 3357 |
/// Returns the target node of the given arc. |
|
| 2322 | 3358 |
Value operator[](const Key& e) const {
|
| 2323 |
return |
|
| 3359 |
return _graph.target(e); |
|
| 2324 | 3360 |
} |
| 2325 | 3361 |
|
| 2326 | 3362 |
private: |
| 2327 |
const |
|
| 3363 |
const GR& _graph; |
|
| 2328 | 3364 |
}; |
| 2329 | 3365 |
|
| 2330 | 3366 |
/// \brief Returns a \c TargetMap class. |
| 2331 | 3367 |
/// |
| 2332 | 3368 |
/// This function just returns a \c TargetMap class. |
| 2333 | 3369 |
/// \relates TargetMap |
| 2334 |
template <typename Digraph> |
|
| 2335 |
inline TargetMap<Digraph> targetMap(const Digraph& digraph) {
|
|
| 2336 |
|
|
| 3370 |
template <typename GR> |
|
| 3371 |
inline TargetMap<GR> targetMap(const GR& graph) {
|
|
| 3372 |
return TargetMap<GR>(graph); |
|
| 2337 | 3373 |
} |
| 2338 | 3374 |
|
| 2339 |
/// \brief |
|
| 3375 |
/// \brief Map of the "forward" directed arc view of edges in a graph. |
|
| 2340 | 3376 |
/// |
| 2341 |
/// |
|
| 3377 |
/// ForwardMap provides access for the "forward" directed arc view of |
|
| 3378 |
/// each edge in a graph, which is returned by the \c direct() function |
|
| 3379 |
/// of the graph with \c true parameter. |
|
| 3380 |
/// \tparam GR The graph type. |
|
| 2342 | 3381 |
/// \see BackwardMap |
| 2343 |
template <typename |
|
| 3382 |
template <typename GR> |
|
| 2344 | 3383 |
class ForwardMap {
|
| 2345 | 3384 |
public: |
| 2346 | 3385 |
|
| 2347 |
typedef typename Graph::Arc Value; |
|
| 2348 |
typedef typename Graph::Edge Key; |
|
| 3386 |
/// The key type (the \c Edge type of the digraph). |
|
| 3387 |
typedef typename GR::Edge Key; |
|
| 3388 |
/// The value type (the \c Arc type of the digraph). |
|
| 3389 |
typedef typename GR::Arc Value; |
|
| 2349 | 3390 |
|
| 2350 | 3391 |
/// \brief Constructor |
| 2351 | 3392 |
/// |
| 2352 |
/// Constructor |
|
| 3393 |
/// Constructor. |
|
| 2353 | 3394 |
/// \param graph The graph that the map belongs to. |
| 2354 |
explicit ForwardMap(const Graph& graph) : _graph(graph) {}
|
|
| 2355 |
|
|
| 2356 |
|
|
| 3395 |
explicit ForwardMap(const GR& graph) : _graph(graph) {}
|
|
| 3396 |
|
|
| 3397 |
/// \brief Returns the "forward" directed arc view of the given edge. |
|
| 2357 | 3398 |
/// |
| 2358 |
/// The subscript operator. |
|
| 2359 |
/// \param key An edge |
|
| 2360 |
/// |
|
| 3399 |
/// Returns the "forward" directed arc view of the given edge. |
|
| 2361 | 3400 |
Value operator[](const Key& key) const {
|
| 2362 | 3401 |
return _graph.direct(key, true); |
| 2363 | 3402 |
} |
| 2364 | 3403 |
|
| 2365 | 3404 |
private: |
| 2366 |
const |
|
| 3405 |
const GR& _graph; |
|
| 2367 | 3406 |
}; |
| 2368 | 3407 |
|
| 2369 | 3408 |
/// \brief Returns a \c ForwardMap class. |
| 2370 | 3409 |
/// |
| 2371 | 3410 |
/// This function just returns an \c ForwardMap class. |
| 2372 | 3411 |
/// \relates ForwardMap |
| 2373 |
template <typename Graph> |
|
| 2374 |
inline ForwardMap<Graph> forwardMap(const Graph& graph) {
|
|
| 2375 |
|
|
| 3412 |
template <typename GR> |
|
| 3413 |
inline ForwardMap<GR> forwardMap(const GR& graph) {
|
|
| 3414 |
return ForwardMap<GR>(graph); |
|
| 2376 | 3415 |
} |
| 2377 | 3416 |
|
| 2378 |
/// \brief |
|
| 3417 |
/// \brief Map of the "backward" directed arc view of edges in a graph. |
|
| 2379 | 3418 |
/// |
| 2380 |
/// |
|
| 3419 |
/// BackwardMap provides access for the "backward" directed arc view of |
|
| 3420 |
/// each edge in a graph, which is returned by the \c direct() function |
|
| 3421 |
/// of the graph with \c false parameter. |
|
| 3422 |
/// \tparam GR The graph type. |
|
| 2381 | 3423 |
/// \see ForwardMap |
| 2382 |
template <typename |
|
| 3424 |
template <typename GR> |
|
| 2383 | 3425 |
class BackwardMap {
|
| 2384 | 3426 |
public: |
| 2385 | 3427 |
|
| 2386 |
typedef typename Graph::Arc Value; |
|
| 2387 |
typedef typename Graph::Edge Key; |
|
| 3428 |
/// The key type (the \c Edge type of the digraph). |
|
| 3429 |
typedef typename GR::Edge Key; |
|
| 3430 |
/// The value type (the \c Arc type of the digraph). |
|
| 3431 |
typedef typename GR::Arc Value; |
|
| 2388 | 3432 |
|
| 2389 | 3433 |
/// \brief Constructor |
| 2390 | 3434 |
/// |
| 2391 |
/// Constructor |
|
| 3435 |
/// Constructor. |
|
| 2392 | 3436 |
/// \param graph The graph that the map belongs to. |
| 2393 |
explicit BackwardMap(const Graph& graph) : _graph(graph) {}
|
|
| 2394 |
|
|
| 2395 |
|
|
| 3437 |
explicit BackwardMap(const GR& graph) : _graph(graph) {}
|
|
| 3438 |
|
|
| 3439 |
/// \brief Returns the "backward" directed arc view of the given edge. |
|
| 2396 | 3440 |
/// |
| 2397 |
/// The subscript operator. |
|
| 2398 |
/// \param key An edge |
|
| 2399 |
/// |
|
| 3441 |
/// Returns the "backward" directed arc view of the given edge. |
|
| 2400 | 3442 |
Value operator[](const Key& key) const {
|
| 2401 | 3443 |
return _graph.direct(key, false); |
| 2402 | 3444 |
} |
| 2403 | 3445 |
|
| 2404 | 3446 |
private: |
| 2405 |
const |
|
| 3447 |
const GR& _graph; |
|
| 2406 | 3448 |
}; |
| 2407 | 3449 |
|
| 2408 | 3450 |
/// \brief Returns a \c BackwardMap class |
| 2409 | 3451 |
|
| 2410 | 3452 |
/// This function just returns a \c BackwardMap class. |
| 2411 | 3453 |
/// \relates BackwardMap |
| 2412 |
template <typename Graph> |
|
| 2413 |
inline BackwardMap<Graph> backwardMap(const Graph& graph) {
|
|
| 2414 |
|
|
| 3454 |
template <typename GR> |
|
| 3455 |
inline BackwardMap<GR> backwardMap(const GR& graph) {
|
|
| 3456 |
return BackwardMap<GR>(graph); |
|
| 2415 | 3457 |
} |
| 2416 | 3458 |
|
| 2417 |
/// \brief Potential difference map |
|
| 2418 |
/// |
|
| 2419 |
/// If there is an potential map on the nodes then we |
|
| 2420 |
/// can get an arc map as we get the substraction of the |
|
| 2421 |
/// values of the target and source. |
|
| 2422 |
template <typename Digraph, typename NodeMap> |
|
| 2423 |
class PotentialDifferenceMap {
|
|
| 2424 |
public: |
|
| 2425 |
typedef typename Digraph::Arc Key; |
|
| 2426 |
typedef typename NodeMap::Value Value; |
|
| 2427 |
|
|
| 2428 |
/// \brief Constructor |
|
| 2429 |
/// |
|
| 2430 |
/// Contructor of the map |
|
| 2431 |
explicit PotentialDifferenceMap(const Digraph& digraph, |
|
| 2432 |
const NodeMap& potential) |
|
| 2433 |
: _digraph(digraph), _potential(potential) {}
|
|
| 2434 |
|
|
| 2435 |
/// \brief Const subscription operator |
|
| 2436 |
/// |
|
| 2437 |
/// Const subscription operator |
|
| 2438 |
Value operator[](const Key& arc) const {
|
|
| 2439 |
return _potential[_digraph.target(arc)] - |
|
| 2440 |
_potential[_digraph.source(arc)]; |
|
| 2441 |
} |
|
| 2442 |
|
|
| 2443 |
private: |
|
| 2444 |
const Digraph& _digraph; |
|
| 2445 |
const NodeMap& _potential; |
|
| 2446 |
}; |
|
| 2447 |
|
|
| 2448 |
/// \brief Returns a PotentialDifferenceMap. |
|
| 2449 |
/// |
|
| 2450 |
/// This function just returns a PotentialDifferenceMap. |
|
| 2451 |
/// \relates PotentialDifferenceMap |
|
| 2452 |
template <typename Digraph, typename NodeMap> |
|
| 2453 |
PotentialDifferenceMap<Digraph, NodeMap> |
|
| 2454 |
potentialDifferenceMap(const Digraph& digraph, const NodeMap& potential) {
|
|
| 2455 |
return PotentialDifferenceMap<Digraph, NodeMap>(digraph, potential); |
|
| 2456 |
} |
|
| 2457 |
|
|
| 2458 |
/// \brief Map of the node in-degrees. |
|
| 3459 |
/// \brief Map of the in-degrees of nodes in a digraph. |
|
| 2459 | 3460 |
/// |
| 2460 | 3461 |
/// This map returns the in-degree of a node. Once it is constructed, |
| 2461 |
/// the degrees are stored in a standard NodeMap, so each query is done |
|
| 3462 |
/// the degrees are stored in a standard \c NodeMap, so each query is done |
|
| 2462 | 3463 |
/// in constant time. On the other hand, the values are updated automatically |
| 2463 | 3464 |
/// whenever the digraph changes. |
| 2464 | 3465 |
/// |
| 2465 |
/// \warning Besides addNode() and addArc(), a digraph structure may provide |
|
| 2466 |
/// alternative ways to modify the digraph. The correct behavior of InDegMap |
|
| 2467 |
/// is not guarantied if these additional features are used. For example |
|
| 2468 |
/// the functions \ref ListDigraph::changeSource() "changeSource()", |
|
| 3466 |
/// \warning Besides \c addNode() and \c addArc(), a digraph structure |
|
| 3467 |
/// may provide alternative ways to modify the digraph. |
|
| 3468 |
/// The correct behavior of InDegMap is not guarantied if these additional |
|
| 3469 |
/// features are used. For example the functions |
|
| 3470 |
/// \ref ListDigraph::changeSource() "changeSource()", |
|
| 2469 | 3471 |
/// \ref ListDigraph::changeTarget() "changeTarget()" and |
| 2470 | 3472 |
/// \ref ListDigraph::reverseArc() "reverseArc()" |
| 2471 | 3473 |
/// of \ref ListDigraph will \e not update the degree values correctly. |
| 2472 | 3474 |
/// |
| 2473 | 3475 |
/// \sa OutDegMap |
| 2474 |
|
|
| 2475 |
template <typename _Digraph> |
|
| 3476 |
template <typename GR> |
|
| 2476 | 3477 |
class InDegMap |
| 2477 |
: protected ItemSetTraits< |
|
| 3478 |
: protected ItemSetTraits<GR, typename GR::Arc> |
|
| 2478 | 3479 |
::ItemNotifier::ObserverBase {
|
| 2479 | 3480 |
|
| 2480 | 3481 |
public: |
| 2481 | 3482 |
|
| 2482 |
|
|
| 3483 |
/// The graph type of InDegMap |
|
| 3484 |
typedef GR Graph; |
|
| 3485 |
typedef GR Digraph; |
|
| 3486 |
/// The key type |
|
| 3487 |
typedef typename Digraph::Node Key; |
|
| 3488 |
/// The value type |
|
| 2483 | 3489 |
typedef int Value; |
| 2484 |
typedef typename Digraph::Node Key; |
|
| 2485 | 3490 |
|
| 2486 | 3491 |
typedef typename ItemSetTraits<Digraph, typename Digraph::Arc> |
| 2487 | 3492 |
::ItemNotifier::ObserverBase Parent; |
| 2488 | 3493 |
|
| 2489 | 3494 |
private: |
| 2490 | 3495 |
|
| 2491 | 3496 |
class AutoNodeMap |
| 2492 | 3497 |
: public ItemSetTraits<Digraph, Key>::template Map<int>::Type {
|
| 2493 | 3498 |
public: |
| 2494 | 3499 |
|
| 2495 | 3500 |
typedef typename ItemSetTraits<Digraph, Key>:: |
| 2496 | 3501 |
template Map<int>::Type Parent; |
| 2497 | 3502 |
|
| 2498 | 3503 |
AutoNodeMap(const Digraph& digraph) : Parent(digraph, 0) {}
|
| 2499 | 3504 |
|
| 2500 | 3505 |
virtual void add(const Key& key) {
|
| 2501 | 3506 |
Parent::add(key); |
| 2502 | 3507 |
Parent::set(key, 0); |
| 2503 | 3508 |
} |
| 2504 | 3509 |
|
| 2505 | 3510 |
virtual void add(const std::vector<Key>& keys) {
|
| 2506 | 3511 |
Parent::add(keys); |
| 2507 | 3512 |
for (int i = 0; i < int(keys.size()); ++i) {
|
| 2508 | 3513 |
Parent::set(keys[i], 0); |
| 2509 | 3514 |
} |
| 2510 | 3515 |
} |
| 2511 | 3516 |
|
| 2512 | 3517 |
virtual void build() {
|
| 2513 | 3518 |
Parent::build(); |
| 2514 | 3519 |
Key it; |
| 2515 | 3520 |
typename Parent::Notifier* nf = Parent::notifier(); |
| 2516 | 3521 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
| 2517 | 3522 |
Parent::set(it, 0); |
| 2518 | 3523 |
} |
| 2519 | 3524 |
} |
| 2520 | 3525 |
}; |
| 2521 | 3526 |
|
| 2522 | 3527 |
public: |
| 2523 | 3528 |
|
| 2524 | 3529 |
/// \brief Constructor. |
| 2525 | 3530 |
/// |
| 2526 |
/// Constructor for creating in-degree map. |
|
| 2527 |
explicit InDegMap(const Digraph& digraph) |
|
| 2528 |
|
|
| 3531 |
/// Constructor for creating an in-degree map. |
|
| 3532 |
explicit InDegMap(const Digraph& graph) |
|
| 3533 |
: _digraph(graph), _deg(graph) {
|
|
| 2529 | 3534 |
Parent::attach(_digraph.notifier(typename Digraph::Arc())); |
| 2530 | 3535 |
|
| 2531 | 3536 |
for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
|
| 2532 | 3537 |
_deg[it] = countInArcs(_digraph, it); |
| 2533 | 3538 |
} |
| 2534 | 3539 |
} |
| 2535 | 3540 |
|
| 3541 |
/// \brief Gives back the in-degree of a Node. |
|
| 3542 |
/// |
|
| 2536 | 3543 |
/// Gives back the in-degree of a Node. |
| 2537 | 3544 |
int operator[](const Key& key) const {
|
| 2538 | 3545 |
return _deg[key]; |
| 2539 | 3546 |
} |
| 2540 | 3547 |
|
| 2541 | 3548 |
protected: |
| 2542 | 3549 |
|
| 2543 | 3550 |
typedef typename Digraph::Arc Arc; |
| 2544 | 3551 |
|
| 2545 | 3552 |
virtual void add(const Arc& arc) {
|
| 2546 | 3553 |
++_deg[_digraph.target(arc)]; |
| 2547 | 3554 |
} |
| 2548 | 3555 |
|
| 2549 | 3556 |
virtual void add(const std::vector<Arc>& arcs) {
|
| 2550 | 3557 |
for (int i = 0; i < int(arcs.size()); ++i) {
|
| 2551 | 3558 |
++_deg[_digraph.target(arcs[i])]; |
| 2552 | 3559 |
} |
| 2553 | 3560 |
} |
| 2554 | 3561 |
|
| 2555 | 3562 |
virtual void erase(const Arc& arc) {
|
| 2556 | 3563 |
--_deg[_digraph.target(arc)]; |
| 2557 | 3564 |
} |
| 2558 | 3565 |
|
| 2559 | 3566 |
virtual void erase(const std::vector<Arc>& arcs) {
|
| 2560 | 3567 |
for (int i = 0; i < int(arcs.size()); ++i) {
|
| 2561 | 3568 |
--_deg[_digraph.target(arcs[i])]; |
| 2562 | 3569 |
} |
| 2563 | 3570 |
} |
| 2564 | 3571 |
|
| 2565 | 3572 |
virtual void build() {
|
| 2566 | 3573 |
for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
|
| 2567 | 3574 |
_deg[it] = countInArcs(_digraph, it); |
| 2568 | 3575 |
} |
| 2569 | 3576 |
} |
| 2570 | 3577 |
|
| 2571 | 3578 |
virtual void clear() {
|
| 2572 | 3579 |
for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
|
| 2573 | 3580 |
_deg[it] = 0; |
| 2574 | 3581 |
} |
| 2575 | 3582 |
} |
| 2576 | 3583 |
private: |
| 2577 | 3584 |
|
| 2578 | 3585 |
const Digraph& _digraph; |
| 2579 | 3586 |
AutoNodeMap _deg; |
| 2580 | 3587 |
}; |
| 2581 | 3588 |
|
| 2582 |
/// \brief Map of the |
|
| 3589 |
/// \brief Map of the out-degrees of nodes in a digraph. |
|
| 2583 | 3590 |
/// |
| 2584 | 3591 |
/// This map returns the out-degree of a node. Once it is constructed, |
| 2585 |
/// the degrees are stored in a standard NodeMap, so each query is done |
|
| 3592 |
/// the degrees are stored in a standard \c NodeMap, so each query is done |
|
| 2586 | 3593 |
/// in constant time. On the other hand, the values are updated automatically |
| 2587 | 3594 |
/// whenever the digraph changes. |
| 2588 | 3595 |
/// |
| 2589 |
/// \warning Besides addNode() and addArc(), a digraph structure may provide |
|
| 2590 |
/// alternative ways to modify the digraph. The correct behavior of OutDegMap |
|
| 2591 |
/// is not guarantied if these additional features are used. For example |
|
| 2592 |
/// the functions \ref ListDigraph::changeSource() "changeSource()", |
|
| 3596 |
/// \warning Besides \c addNode() and \c addArc(), a digraph structure |
|
| 3597 |
/// may provide alternative ways to modify the digraph. |
|
| 3598 |
/// The correct behavior of OutDegMap is not guarantied if these additional |
|
| 3599 |
/// features are used. For example the functions |
|
| 3600 |
/// \ref ListDigraph::changeSource() "changeSource()", |
|
| 2593 | 3601 |
/// \ref ListDigraph::changeTarget() "changeTarget()" and |
| 2594 | 3602 |
/// \ref ListDigraph::reverseArc() "reverseArc()" |
| 2595 | 3603 |
/// of \ref ListDigraph will \e not update the degree values correctly. |
| 2596 | 3604 |
/// |
| 2597 | 3605 |
/// \sa InDegMap |
| 2598 |
|
|
| 2599 |
template <typename _Digraph> |
|
| 3606 |
template <typename GR> |
|
| 2600 | 3607 |
class OutDegMap |
| 2601 |
: protected ItemSetTraits< |
|
| 3608 |
: protected ItemSetTraits<GR, typename GR::Arc> |
|
| 2602 | 3609 |
::ItemNotifier::ObserverBase {
|
| 2603 | 3610 |
|
| 2604 | 3611 |
public: |
| 2605 | 3612 |
|
| 2606 |
|
|
| 3613 |
/// The graph type of OutDegMap |
|
| 3614 |
typedef GR Graph; |
|
| 3615 |
typedef GR Digraph; |
|
| 3616 |
/// The key type |
|
| 3617 |
typedef typename Digraph::Node Key; |
|
| 3618 |
/// The value type |
|
| 2607 | 3619 |
typedef int Value; |
| 2608 |
typedef typename Digraph::Node Key; |
|
| 2609 | 3620 |
|
| 2610 | 3621 |
typedef typename ItemSetTraits<Digraph, typename Digraph::Arc> |
| 2611 | 3622 |
::ItemNotifier::ObserverBase Parent; |
| 2612 | 3623 |
|
| 2613 | 3624 |
private: |
| 2614 | 3625 |
|
| 2615 | 3626 |
class AutoNodeMap |
| 2616 | 3627 |
: public ItemSetTraits<Digraph, Key>::template Map<int>::Type {
|
| 2617 | 3628 |
public: |
| 2618 | 3629 |
|
| 2619 | 3630 |
typedef typename ItemSetTraits<Digraph, Key>:: |
| 2620 | 3631 |
template Map<int>::Type Parent; |
| 2621 | 3632 |
|
| 2622 | 3633 |
AutoNodeMap(const Digraph& digraph) : Parent(digraph, 0) {}
|
| 2623 | 3634 |
|
| 2624 | 3635 |
virtual void add(const Key& key) {
|
| 2625 | 3636 |
Parent::add(key); |
| 2626 | 3637 |
Parent::set(key, 0); |
| 2627 | 3638 |
} |
| 2628 | 3639 |
virtual void add(const std::vector<Key>& keys) {
|
| 2629 | 3640 |
Parent::add(keys); |
| 2630 | 3641 |
for (int i = 0; i < int(keys.size()); ++i) {
|
| 2631 | 3642 |
Parent::set(keys[i], 0); |
| 2632 | 3643 |
} |
| 2633 | 3644 |
} |
| 2634 | 3645 |
virtual void build() {
|
| 2635 | 3646 |
Parent::build(); |
| 2636 | 3647 |
Key it; |
| 2637 | 3648 |
typename Parent::Notifier* nf = Parent::notifier(); |
| 2638 | 3649 |
for (nf->first(it); it != INVALID; nf->next(it)) {
|
| 2639 | 3650 |
Parent::set(it, 0); |
| 2640 | 3651 |
} |
| 2641 | 3652 |
} |
| 2642 | 3653 |
}; |
| 2643 | 3654 |
|
| 2644 | 3655 |
public: |
| 2645 | 3656 |
|
| 2646 | 3657 |
/// \brief Constructor. |
| 2647 | 3658 |
/// |
| 2648 |
/// Constructor for creating out-degree map. |
|
| 2649 |
explicit OutDegMap(const Digraph& digraph) |
|
| 2650 |
|
|
| 3659 |
/// Constructor for creating an out-degree map. |
|
| 3660 |
explicit OutDegMap(const Digraph& graph) |
|
| 3661 |
: _digraph(graph), _deg(graph) {
|
|
| 2651 | 3662 |
Parent::attach(_digraph.notifier(typename Digraph::Arc())); |
| 2652 | 3663 |
|
| 2653 | 3664 |
for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
|
| 2654 | 3665 |
_deg[it] = countOutArcs(_digraph, it); |
| 2655 | 3666 |
} |
| 2656 | 3667 |
} |
| 2657 | 3668 |
|
| 3669 |
/// \brief Gives back the out-degree of a Node. |
|
| 3670 |
/// |
|
| 2658 | 3671 |
/// Gives back the out-degree of a Node. |
| 2659 | 3672 |
int operator[](const Key& key) const {
|
| 2660 | 3673 |
return _deg[key]; |
| 2661 | 3674 |
} |
| 2662 | 3675 |
|
| 2663 | 3676 |
protected: |
| 2664 | 3677 |
|
| 2665 | 3678 |
typedef typename Digraph::Arc Arc; |
| 2666 | 3679 |
|
| 2667 | 3680 |
virtual void add(const Arc& arc) {
|
| 2668 | 3681 |
++_deg[_digraph.source(arc)]; |
| 2669 | 3682 |
} |
| 2670 | 3683 |
|
| 2671 | 3684 |
virtual void add(const std::vector<Arc>& arcs) {
|
| 2672 | 3685 |
for (int i = 0; i < int(arcs.size()); ++i) {
|
| 2673 | 3686 |
++_deg[_digraph.source(arcs[i])]; |
| 2674 | 3687 |
} |
| 2675 | 3688 |
} |
| 2676 | 3689 |
|
| 2677 | 3690 |
virtual void erase(const Arc& arc) {
|
| 2678 | 3691 |
--_deg[_digraph.source(arc)]; |
| 2679 | 3692 |
} |
| 2680 | 3693 |
|
| 2681 | 3694 |
virtual void erase(const std::vector<Arc>& arcs) {
|
| 2682 | 3695 |
for (int i = 0; i < int(arcs.size()); ++i) {
|
| 2683 | 3696 |
--_deg[_digraph.source(arcs[i])]; |
| 2684 | 3697 |
} |
| 2685 | 3698 |
} |
| 2686 | 3699 |
|
| 2687 | 3700 |
virtual void build() {
|
| 2688 | 3701 |
for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
|
| 2689 | 3702 |
_deg[it] = countOutArcs(_digraph, it); |
| 2690 | 3703 |
} |
| 2691 | 3704 |
} |
| 2692 | 3705 |
|
| 2693 | 3706 |
virtual void clear() {
|
| 2694 | 3707 |
for(typename Digraph::NodeIt it(_digraph); it != INVALID; ++it) {
|
| 2695 | 3708 |
_deg[it] = 0; |
| 2696 | 3709 |
} |
| 2697 | 3710 |
} |
| 2698 | 3711 |
private: |
| 2699 | 3712 |
|
| 2700 | 3713 |
const Digraph& _digraph; |
| 2701 | 3714 |
AutoNodeMap _deg; |
| 2702 | 3715 |
}; |
| 2703 | 3716 |
|
| 3717 |
/// \brief Potential difference map |
|
| 3718 |
/// |
|
| 3719 |
/// PotentialDifferenceMap returns the difference between the potentials of |
|
| 3720 |
/// the source and target nodes of each arc in a digraph, i.e. it returns |
|
| 3721 |
/// \code |
|
| 3722 |
/// potential[gr.target(arc)] - potential[gr.source(arc)]. |
|
| 3723 |
/// \endcode |
|
| 3724 |
/// \tparam GR The digraph type. |
|
| 3725 |
/// \tparam POT A node map storing the potentials. |
|
| 3726 |
template <typename GR, typename POT> |
|
| 3727 |
class PotentialDifferenceMap {
|
|
| 3728 |
public: |
|
| 3729 |
/// Key type |
|
| 3730 |
typedef typename GR::Arc Key; |
|
| 3731 |
/// Value type |
|
| 3732 |
typedef typename POT::Value Value; |
|
| 3733 |
|
|
| 3734 |
/// \brief Constructor |
|
| 3735 |
/// |
|
| 3736 |
/// Contructor of the map. |
|
| 3737 |
explicit PotentialDifferenceMap(const GR& gr, |
|
| 3738 |
const POT& potential) |
|
| 3739 |
: _digraph(gr), _potential(potential) {}
|
|
| 3740 |
|
|
| 3741 |
/// \brief Returns the potential difference for the given arc. |
|
| 3742 |
/// |
|
| 3743 |
/// Returns the potential difference for the given arc, i.e. |
|
| 3744 |
/// \code |
|
| 3745 |
/// potential[gr.target(arc)] - potential[gr.source(arc)]. |
|
| 3746 |
/// \endcode |
|
| 3747 |
Value operator[](const Key& arc) const {
|
|
| 3748 |
return _potential[_digraph.target(arc)] - |
|
| 3749 |
_potential[_digraph.source(arc)]; |
|
| 3750 |
} |
|
| 3751 |
|
|
| 3752 |
private: |
|
| 3753 |
const GR& _digraph; |
|
| 3754 |
const POT& _potential; |
|
| 3755 |
}; |
|
| 3756 |
|
|
| 3757 |
/// \brief Returns a PotentialDifferenceMap. |
|
| 3758 |
/// |
|
| 3759 |
/// This function just returns a PotentialDifferenceMap. |
|
| 3760 |
/// \relates PotentialDifferenceMap |
|
| 3761 |
template <typename GR, typename POT> |
|
| 3762 |
PotentialDifferenceMap<GR, POT> |
|
| 3763 |
potentialDifferenceMap(const GR& gr, const POT& potential) {
|
|
| 3764 |
return PotentialDifferenceMap<GR, POT>(gr, potential); |
|
| 3765 |
} |
|
| 3766 |
|
|
| 2704 | 3767 |
/// @} |
| 2705 | 3768 |
} |
| 2706 | 3769 |
|
| 2707 | 3770 |
#endif // LEMON_MAPS_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_MAX_MATCHING_H |
| 20 | 20 |
#define LEMON_MAX_MATCHING_H |
| 21 | 21 |
|
| 22 | 22 |
#include <vector> |
| 23 | 23 |
#include <queue> |
| 24 | 24 |
#include <set> |
| 25 | 25 |
#include <limits> |
| 26 | 26 |
|
| 27 | 27 |
#include <lemon/core.h> |
| 28 | 28 |
#include <lemon/unionfind.h> |
| 29 | 29 |
#include <lemon/bin_heap.h> |
| 30 | 30 |
#include <lemon/maps.h> |
| 31 | 31 |
|
| 32 | 32 |
///\ingroup matching |
| 33 | 33 |
///\file |
| 34 | 34 |
///\brief Maximum matching algorithms in general graphs. |
| 35 | 35 |
|
| 36 | 36 |
namespace lemon {
|
| 37 | 37 |
|
| 38 | 38 |
/// \ingroup matching |
| 39 | 39 |
/// |
| 40 |
/// \brief |
|
| 40 |
/// \brief Maximum cardinality matching in general graphs |
|
| 41 | 41 |
/// |
| 42 |
/// This class implements Edmonds' alternating forest matching |
|
| 43 |
/// algorithm. The algorithm can be started from an arbitrary initial |
|
| 44 |
/// matching |
|
| 42 |
/// This class implements Edmonds' alternating forest matching algorithm |
|
| 43 |
/// for finding a maximum cardinality matching in a general undirected graph. |
|
| 44 |
/// It can be started from an arbitrary initial matching |
|
| 45 |
/// (the default is the empty one). |
|
| 45 | 46 |
/// |
| 46 | 47 |
/// The dual solution of the problem is a map of the nodes to |
| 47 |
/// MaxMatching::Status, having values \c EVEN/D, \c ODD/A and \c |
|
| 48 |
/// MATCHED/C showing the Gallai-Edmonds decomposition of the |
|
| 49 |
/// graph. The nodes in \c EVEN/D induce a graph with |
|
| 50 |
/// factor-critical components, the nodes in \c ODD/A form the |
|
| 51 |
/// barrier, and the nodes in \c MATCHED/C induce a graph having a |
|
| 52 |
/// perfect matching. The number of the factor-critical components |
|
| 48 |
/// \ref MaxMatching::Status "Status", having values \c EVEN (or \c D), |
|
| 49 |
/// \c ODD (or \c A) and \c MATCHED (or \c C) defining the Gallai-Edmonds |
|
| 50 |
/// decomposition of the graph. The nodes in \c EVEN/D induce a subgraph |
|
| 51 |
/// with factor-critical components, the nodes in \c ODD/A form the |
|
| 52 |
/// canonical barrier, and the nodes in \c MATCHED/C induce a graph having |
|
| 53 |
/// a perfect matching. The number of the factor-critical components |
|
| 53 | 54 |
/// minus the number of barrier nodes is a lower bound on the |
| 54 | 55 |
/// unmatched nodes, and the matching is optimal if and only if this bound is |
| 55 |
/// tight. This decomposition can be attained by calling \c |
|
| 56 |
/// decomposition() after running the algorithm. |
|
| 56 |
/// tight. This decomposition can be obtained using \ref status() or |
|
| 57 |
/// \ref statusMap() after running the algorithm. |
|
| 57 | 58 |
/// |
| 58 |
/// \param _Graph The graph type the algorithm runs on. |
|
| 59 |
template <typename _Graph> |
|
| 59 |
/// \tparam GR The undirected graph type the algorithm runs on. |
|
| 60 |
template <typename GR> |
|
| 60 | 61 |
class MaxMatching {
|
| 61 | 62 |
public: |
| 62 | 63 |
|
| 63 |
|
|
| 64 |
/// The graph type of the algorithm |
|
| 65 |
typedef GR Graph; |
|
| 66 |
/// The type of the matching map |
|
| 64 | 67 |
typedef typename Graph::template NodeMap<typename Graph::Arc> |
| 65 | 68 |
MatchingMap; |
| 66 | 69 |
|
| 67 |
///\brief |
|
| 70 |
///\brief Status constants for Gallai-Edmonds decomposition. |
|
| 68 | 71 |
/// |
| 69 |
///Indicates the Gallai-Edmonds decomposition of the graph. The |
|
| 70 |
///nodes with Status \c EVEN/D induce a graph with factor-critical |
|
| 71 |
///components, the nodes in \c ODD/A form the canonical barrier, |
|
| 72 |
///and the nodes in \c MATCHED/C induce a graph having a perfect |
|
| 73 |
/// |
|
| 72 |
///These constants are used for indicating the Gallai-Edmonds |
|
| 73 |
///decomposition of a graph. The nodes with status \c EVEN (or \c D) |
|
| 74 |
///induce a subgraph with factor-critical components, the nodes with |
|
| 75 |
///status \c ODD (or \c A) form the canonical barrier, and the nodes |
|
| 76 |
///with status \c MATCHED (or \c C) induce a subgraph having a |
|
| 77 |
///perfect matching. |
|
| 74 | 78 |
enum Status {
|
| 75 |
EVEN = 1, |
|
| 79 |
EVEN = 1, ///< = 1. (\c D is an alias for \c EVEN.) |
|
| 80 |
D = 1, |
|
| 81 |
MATCHED = 0, ///< = 0. (\c C is an alias for \c MATCHED.) |
|
| 82 |
C = 0, |
|
| 83 |
ODD = -1, ///< = -1. (\c A is an alias for \c ODD.) |
|
| 84 |
A = -1, |
|
| 85 |
UNMATCHED = -2 ///< = -2. |
|
| 76 | 86 |
}; |
| 77 | 87 |
|
| 88 |
/// The type of the status map |
|
| 78 | 89 |
typedef typename Graph::template NodeMap<Status> StatusMap; |
| 79 | 90 |
|
| 80 | 91 |
private: |
| 81 | 92 |
|
| 82 | 93 |
TEMPLATE_GRAPH_TYPEDEFS(Graph); |
| 83 | 94 |
|
| 84 | 95 |
typedef UnionFindEnum<IntNodeMap> BlossomSet; |
| 85 | 96 |
typedef ExtendFindEnum<IntNodeMap> TreeSet; |
| 86 | 97 |
typedef RangeMap<Node> NodeIntMap; |
| 87 | 98 |
typedef MatchingMap EarMap; |
| 88 | 99 |
typedef std::vector<Node> NodeQueue; |
| 89 | 100 |
|
| 90 | 101 |
const Graph& _graph; |
| 91 | 102 |
MatchingMap* _matching; |
| 92 | 103 |
StatusMap* _status; |
| 93 | 104 |
|
| 94 | 105 |
EarMap* _ear; |
| 95 | 106 |
|
| 96 | 107 |
IntNodeMap* _blossom_set_index; |
| 97 | 108 |
BlossomSet* _blossom_set; |
| 98 | 109 |
NodeIntMap* _blossom_rep; |
| 99 | 110 |
|
| 100 | 111 |
IntNodeMap* _tree_set_index; |
| 101 | 112 |
TreeSet* _tree_set; |
| 102 | 113 |
|
| 103 | 114 |
NodeQueue _node_queue; |
| 104 | 115 |
int _process, _postpone, _last; |
| 105 | 116 |
|
| 106 | 117 |
int _node_num; |
| 107 | 118 |
|
| 108 | 119 |
private: |
| 109 | 120 |
|
| 110 | 121 |
void createStructures() {
|
| 111 | 122 |
_node_num = countNodes(_graph); |
| 112 | 123 |
if (!_matching) {
|
| 113 | 124 |
_matching = new MatchingMap(_graph); |
| 114 | 125 |
} |
| 115 | 126 |
if (!_status) {
|
| 116 | 127 |
_status = new StatusMap(_graph); |
| 117 | 128 |
} |
| 118 | 129 |
if (!_ear) {
|
| 119 | 130 |
_ear = new EarMap(_graph); |
| 120 | 131 |
} |
| 121 | 132 |
if (!_blossom_set) {
|
| 122 | 133 |
_blossom_set_index = new IntNodeMap(_graph); |
| 123 | 134 |
_blossom_set = new BlossomSet(*_blossom_set_index); |
| 124 | 135 |
} |
| 125 | 136 |
if (!_blossom_rep) {
|
| 126 | 137 |
_blossom_rep = new NodeIntMap(_node_num); |
| 127 | 138 |
} |
| 128 | 139 |
if (!_tree_set) {
|
| 129 | 140 |
_tree_set_index = new IntNodeMap(_graph); |
| 130 | 141 |
_tree_set = new TreeSet(*_tree_set_index); |
| 131 | 142 |
} |
| 132 | 143 |
_node_queue.resize(_node_num); |
| 133 | 144 |
} |
| 134 | 145 |
|
| 135 | 146 |
void destroyStructures() {
|
| 136 | 147 |
if (_matching) {
|
| 137 | 148 |
delete _matching; |
| 138 | 149 |
} |
| 139 | 150 |
if (_status) {
|
| 140 | 151 |
delete _status; |
| 141 | 152 |
} |
| 142 | 153 |
if (_ear) {
|
| 143 | 154 |
delete _ear; |
| 144 | 155 |
} |
| 145 | 156 |
if (_blossom_set) {
|
| 146 | 157 |
delete _blossom_set; |
| 147 | 158 |
delete _blossom_set_index; |
| 148 | 159 |
} |
| 149 | 160 |
if (_blossom_rep) {
|
| 150 | 161 |
delete _blossom_rep; |
| 151 | 162 |
} |
| 152 | 163 |
if (_tree_set) {
|
| 153 | 164 |
delete _tree_set_index; |
| 154 | 165 |
delete _tree_set; |
| 155 | 166 |
} |
| 156 | 167 |
} |
| 157 | 168 |
|
| 158 | 169 |
void processDense(const Node& n) {
|
| 159 | 170 |
_process = _postpone = _last = 0; |
| 160 | 171 |
_node_queue[_last++] = n; |
| 161 | 172 |
|
| 162 | 173 |
while (_process != _last) {
|
| 163 | 174 |
Node u = _node_queue[_process++]; |
| 164 | 175 |
for (OutArcIt a(_graph, u); a != INVALID; ++a) {
|
| 165 | 176 |
Node v = _graph.target(a); |
| 166 | 177 |
if ((*_status)[v] == MATCHED) {
|
| 167 | 178 |
extendOnArc(a); |
| 168 | 179 |
} else if ((*_status)[v] == UNMATCHED) {
|
| 169 | 180 |
augmentOnArc(a); |
| 170 | 181 |
return; |
| 171 | 182 |
} |
| 172 | 183 |
} |
| 173 | 184 |
} |
| 174 | 185 |
|
| 175 | 186 |
while (_postpone != _last) {
|
| 176 | 187 |
Node u = _node_queue[_postpone++]; |
| 177 | 188 |
|
| 178 | 189 |
for (OutArcIt a(_graph, u); a != INVALID ; ++a) {
|
| 179 | 190 |
Node v = _graph.target(a); |
| 180 | 191 |
|
| 181 | 192 |
if ((*_status)[v] == EVEN) {
|
| 182 | 193 |
if (_blossom_set->find(u) != _blossom_set->find(v)) {
|
| 183 | 194 |
shrinkOnEdge(a); |
| 184 | 195 |
} |
| 185 | 196 |
} |
| 186 | 197 |
|
| 187 | 198 |
while (_process != _last) {
|
| 188 | 199 |
Node w = _node_queue[_process++]; |
| 189 | 200 |
for (OutArcIt b(_graph, w); b != INVALID; ++b) {
|
| 190 | 201 |
Node x = _graph.target(b); |
| 191 | 202 |
if ((*_status)[x] == MATCHED) {
|
| 192 | 203 |
extendOnArc(b); |
| 193 | 204 |
} else if ((*_status)[x] == UNMATCHED) {
|
| 194 | 205 |
augmentOnArc(b); |
| 195 | 206 |
return; |
| 196 | 207 |
} |
| 197 | 208 |
} |
| 198 | 209 |
} |
| 199 | 210 |
} |
| 200 | 211 |
} |
| 201 | 212 |
} |
| 202 | 213 |
|
| 203 | 214 |
void processSparse(const Node& n) {
|
| 204 | 215 |
_process = _last = 0; |
| 205 | 216 |
_node_queue[_last++] = n; |
| 206 | 217 |
while (_process != _last) {
|
| 207 | 218 |
Node u = _node_queue[_process++]; |
| 208 | 219 |
for (OutArcIt a(_graph, u); a != INVALID; ++a) {
|
| 209 | 220 |
Node v = _graph.target(a); |
| 210 | 221 |
|
| 211 | 222 |
if ((*_status)[v] == EVEN) {
|
| 212 | 223 |
if (_blossom_set->find(u) != _blossom_set->find(v)) {
|
| 213 | 224 |
shrinkOnEdge(a); |
| 214 | 225 |
} |
| 215 | 226 |
} else if ((*_status)[v] == MATCHED) {
|
| 216 | 227 |
extendOnArc(a); |
| 217 | 228 |
} else if ((*_status)[v] == UNMATCHED) {
|
| 218 | 229 |
augmentOnArc(a); |
| 219 | 230 |
return; |
| 220 | 231 |
} |
| 221 | 232 |
} |
| 222 | 233 |
} |
| 223 | 234 |
} |
| 224 | 235 |
|
| 225 | 236 |
void shrinkOnEdge(const Edge& e) {
|
| 226 | 237 |
Node nca = INVALID; |
| 227 | 238 |
|
| 228 | 239 |
{
|
| 229 | 240 |
std::set<Node> left_set, right_set; |
| 230 | 241 |
|
| 231 | 242 |
Node left = (*_blossom_rep)[_blossom_set->find(_graph.u(e))]; |
| 232 | 243 |
left_set.insert(left); |
| 233 | 244 |
|
| 234 | 245 |
Node right = (*_blossom_rep)[_blossom_set->find(_graph.v(e))]; |
| 235 | 246 |
right_set.insert(right); |
| 236 | 247 |
|
| 237 | 248 |
while (true) {
|
| 238 | 249 |
if ((*_matching)[left] == INVALID) break; |
| 239 | 250 |
left = _graph.target((*_matching)[left]); |
| 240 | 251 |
left = (*_blossom_rep)[_blossom_set-> |
| 241 | 252 |
find(_graph.target((*_ear)[left]))]; |
| 242 | 253 |
if (right_set.find(left) != right_set.end()) {
|
| 243 | 254 |
nca = left; |
| 244 | 255 |
break; |
| 245 | 256 |
} |
| 246 | 257 |
left_set.insert(left); |
| 247 | 258 |
|
| 248 | 259 |
if ((*_matching)[right] == INVALID) break; |
| 249 | 260 |
right = _graph.target((*_matching)[right]); |
| 250 | 261 |
right = (*_blossom_rep)[_blossom_set-> |
| 251 | 262 |
find(_graph.target((*_ear)[right]))]; |
| 252 | 263 |
if (left_set.find(right) != left_set.end()) {
|
| 253 | 264 |
nca = right; |
| 254 | 265 |
break; |
| 255 | 266 |
} |
| 256 | 267 |
right_set.insert(right); |
| 257 | 268 |
} |
| 258 | 269 |
|
| 259 | 270 |
if (nca == INVALID) {
|
| 260 | 271 |
if ((*_matching)[left] == INVALID) {
|
| 261 | 272 |
nca = right; |
| 262 | 273 |
while (left_set.find(nca) == left_set.end()) {
|
| 263 | 274 |
nca = _graph.target((*_matching)[nca]); |
| 264 | 275 |
nca =(*_blossom_rep)[_blossom_set-> |
| 265 | 276 |
find(_graph.target((*_ear)[nca]))]; |
| 266 | 277 |
} |
| 267 | 278 |
} else {
|
| 268 | 279 |
nca = left; |
| 269 | 280 |
while (right_set.find(nca) == right_set.end()) {
|
| 270 | 281 |
nca = _graph.target((*_matching)[nca]); |
| 271 | 282 |
nca = (*_blossom_rep)[_blossom_set-> |
| 272 | 283 |
find(_graph.target((*_ear)[nca]))]; |
| 273 | 284 |
} |
| 274 | 285 |
} |
| 275 | 286 |
} |
| 276 | 287 |
} |
| 277 | 288 |
|
| 278 | 289 |
{
|
| 279 | 290 |
|
| 280 | 291 |
Node node = _graph.u(e); |
| 281 | 292 |
Arc arc = _graph.direct(e, true); |
| 282 | 293 |
Node base = (*_blossom_rep)[_blossom_set->find(node)]; |
| 283 | 294 |
|
| 284 | 295 |
while (base != nca) {
|
| 285 |
_ear |
|
| 296 |
(*_ear)[node] = arc; |
|
| 286 | 297 |
|
| 287 | 298 |
Node n = node; |
| 288 | 299 |
while (n != base) {
|
| 289 | 300 |
n = _graph.target((*_matching)[n]); |
| 290 | 301 |
Arc a = (*_ear)[n]; |
| 291 | 302 |
n = _graph.target(a); |
| 292 |
_ear |
|
| 303 |
(*_ear)[n] = _graph.oppositeArc(a); |
|
| 293 | 304 |
} |
| 294 | 305 |
node = _graph.target((*_matching)[base]); |
| 295 | 306 |
_tree_set->erase(base); |
| 296 | 307 |
_tree_set->erase(node); |
| 297 | 308 |
_blossom_set->insert(node, _blossom_set->find(base)); |
| 298 |
_status |
|
| 309 |
(*_status)[node] = EVEN; |
|
| 299 | 310 |
_node_queue[_last++] = node; |
| 300 | 311 |
arc = _graph.oppositeArc((*_ear)[node]); |
| 301 | 312 |
node = _graph.target((*_ear)[node]); |
| 302 | 313 |
base = (*_blossom_rep)[_blossom_set->find(node)]; |
| 303 | 314 |
_blossom_set->join(_graph.target(arc), base); |
| 304 | 315 |
} |
| 305 | 316 |
} |
| 306 | 317 |
|
| 307 |
_blossom_rep |
|
| 318 |
(*_blossom_rep)[_blossom_set->find(nca)] = nca; |
|
| 308 | 319 |
|
| 309 | 320 |
{
|
| 310 | 321 |
|
| 311 | 322 |
Node node = _graph.v(e); |
| 312 | 323 |
Arc arc = _graph.direct(e, false); |
| 313 | 324 |
Node base = (*_blossom_rep)[_blossom_set->find(node)]; |
| 314 | 325 |
|
| 315 | 326 |
while (base != nca) {
|
| 316 |
_ear |
|
| 327 |
(*_ear)[node] = arc; |
|
| 317 | 328 |
|
| 318 | 329 |
Node n = node; |
| 319 | 330 |
while (n != base) {
|
| 320 | 331 |
n = _graph.target((*_matching)[n]); |
| 321 | 332 |
Arc a = (*_ear)[n]; |
| 322 | 333 |
n = _graph.target(a); |
| 323 |
_ear |
|
| 334 |
(*_ear)[n] = _graph.oppositeArc(a); |
|
| 324 | 335 |
} |
| 325 | 336 |
node = _graph.target((*_matching)[base]); |
| 326 | 337 |
_tree_set->erase(base); |
| 327 | 338 |
_tree_set->erase(node); |
| 328 | 339 |
_blossom_set->insert(node, _blossom_set->find(base)); |
| 329 |
_status |
|
| 340 |
(*_status)[node] = EVEN; |
|
| 330 | 341 |
_node_queue[_last++] = node; |
| 331 | 342 |
arc = _graph.oppositeArc((*_ear)[node]); |
| 332 | 343 |
node = _graph.target((*_ear)[node]); |
| 333 | 344 |
base = (*_blossom_rep)[_blossom_set->find(node)]; |
| 334 | 345 |
_blossom_set->join(_graph.target(arc), base); |
| 335 | 346 |
} |
| 336 | 347 |
} |
| 337 | 348 |
|
| 338 |
_blossom_rep |
|
| 349 |
(*_blossom_rep)[_blossom_set->find(nca)] = nca; |
|
| 339 | 350 |
} |
| 340 | 351 |
|
| 341 |
|
|
| 342 |
|
|
| 343 | 352 |
void extendOnArc(const Arc& a) {
|
| 344 | 353 |
Node base = _graph.source(a); |
| 345 | 354 |
Node odd = _graph.target(a); |
| 346 | 355 |
|
| 347 |
_ear |
|
| 356 |
(*_ear)[odd] = _graph.oppositeArc(a); |
|
| 348 | 357 |
Node even = _graph.target((*_matching)[odd]); |
| 349 |
_blossom_rep->set(_blossom_set->insert(even), even); |
|
| 350 |
_status->set(odd, ODD); |
|
| 351 |
|
|
| 358 |
(*_blossom_rep)[_blossom_set->insert(even)] = even; |
|
| 359 |
(*_status)[odd] = ODD; |
|
| 360 |
(*_status)[even] = EVEN; |
|
| 352 | 361 |
int tree = _tree_set->find((*_blossom_rep)[_blossom_set->find(base)]); |
| 353 | 362 |
_tree_set->insert(odd, tree); |
| 354 | 363 |
_tree_set->insert(even, tree); |
| 355 | 364 |
_node_queue[_last++] = even; |
| 356 | 365 |
|
| 357 | 366 |
} |
| 358 | 367 |
|
| 359 | 368 |
void augmentOnArc(const Arc& a) {
|
| 360 | 369 |
Node even = _graph.source(a); |
| 361 | 370 |
Node odd = _graph.target(a); |
| 362 | 371 |
|
| 363 | 372 |
int tree = _tree_set->find((*_blossom_rep)[_blossom_set->find(even)]); |
| 364 | 373 |
|
| 365 |
_matching->set(odd, _graph.oppositeArc(a)); |
|
| 366 |
_status->set(odd, MATCHED); |
|
| 374 |
(*_matching)[odd] = _graph.oppositeArc(a); |
|
| 375 |
(*_status)[odd] = MATCHED; |
|
| 367 | 376 |
|
| 368 | 377 |
Arc arc = (*_matching)[even]; |
| 369 |
_matching |
|
| 378 |
(*_matching)[even] = a; |
|
| 370 | 379 |
|
| 371 | 380 |
while (arc != INVALID) {
|
| 372 | 381 |
odd = _graph.target(arc); |
| 373 | 382 |
arc = (*_ear)[odd]; |
| 374 | 383 |
even = _graph.target(arc); |
| 375 |
_matching |
|
| 384 |
(*_matching)[odd] = arc; |
|
| 376 | 385 |
arc = (*_matching)[even]; |
| 377 |
_matching |
|
| 386 |
(*_matching)[even] = _graph.oppositeArc((*_matching)[odd]); |
|
| 378 | 387 |
} |
| 379 | 388 |
|
| 380 | 389 |
for (typename TreeSet::ItemIt it(*_tree_set, tree); |
| 381 | 390 |
it != INVALID; ++it) {
|
| 382 | 391 |
if ((*_status)[it] == ODD) {
|
| 383 |
_status |
|
| 392 |
(*_status)[it] = MATCHED; |
|
| 384 | 393 |
} else {
|
| 385 | 394 |
int blossom = _blossom_set->find(it); |
| 386 | 395 |
for (typename BlossomSet::ItemIt jt(*_blossom_set, blossom); |
| 387 | 396 |
jt != INVALID; ++jt) {
|
| 388 |
_status |
|
| 397 |
(*_status)[jt] = MATCHED; |
|
| 389 | 398 |
} |
| 390 | 399 |
_blossom_set->eraseClass(blossom); |
| 391 | 400 |
} |
| 392 | 401 |
} |
| 393 | 402 |
_tree_set->eraseClass(tree); |
| 394 | 403 |
|
| 395 | 404 |
} |
| 396 | 405 |
|
| 397 | 406 |
public: |
| 398 | 407 |
|
| 399 | 408 |
/// \brief Constructor |
| 400 | 409 |
/// |
| 401 | 410 |
/// Constructor. |
| 402 | 411 |
MaxMatching(const Graph& graph) |
| 403 | 412 |
: _graph(graph), _matching(0), _status(0), _ear(0), |
| 404 | 413 |
_blossom_set_index(0), _blossom_set(0), _blossom_rep(0), |
| 405 | 414 |
_tree_set_index(0), _tree_set(0) {}
|
| 406 | 415 |
|
| 407 | 416 |
~MaxMatching() {
|
| 408 | 417 |
destroyStructures(); |
| 409 | 418 |
} |
| 410 | 419 |
|
| 411 |
/// \name Execution |
|
| 420 |
/// \name Execution Control |
|
| 412 | 421 |
/// The simplest way to execute the algorithm is to use the |
| 413 |
/// \c run() member function. |
|
| 414 |
/// \n |
|
| 415 |
|
|
| 416 |
/// If you need better control on the execution, you must call |
|
| 417 |
/// \ref init(), \ref greedyInit() or \ref matchingInit() |
|
| 418 |
/// functions first, then you can start the algorithm with the \ref |
|
| 419 |
/// |
|
| 422 |
/// \c run() member function.\n |
|
| 423 |
/// If you need better control on the execution, you have to call |
|
| 424 |
/// one of the functions \ref init(), \ref greedyInit() or |
|
| 425 |
/// \ref matchingInit() first, then you can start the algorithm with |
|
| 426 |
/// \ref startSparse() or \ref startDense(). |
|
| 420 | 427 |
|
| 421 | 428 |
///@{
|
| 422 | 429 |
|
| 423 |
/// \brief |
|
| 430 |
/// \brief Set the initial matching to the empty matching. |
|
| 424 | 431 |
/// |
| 425 |
/// Sets the actual matching to the empty matching. |
|
| 426 |
/// |
|
| 432 |
/// This function sets the initial matching to the empty matching. |
|
| 427 | 433 |
void init() {
|
| 428 | 434 |
createStructures(); |
| 429 | 435 |
for(NodeIt n(_graph); n != INVALID; ++n) {
|
| 430 |
_matching->set(n, INVALID); |
|
| 431 |
_status->set(n, UNMATCHED); |
|
| 436 |
(*_matching)[n] = INVALID; |
|
| 437 |
(*_status)[n] = UNMATCHED; |
|
| 432 | 438 |
} |
| 433 | 439 |
} |
| 434 | 440 |
|
| 435 |
///\brief |
|
| 441 |
/// \brief Find an initial matching in a greedy way. |
|
| 436 | 442 |
/// |
| 437 |
/// |
|
| 443 |
/// This function finds an initial matching in a greedy way. |
|
| 438 | 444 |
void greedyInit() {
|
| 439 | 445 |
createStructures(); |
| 440 | 446 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 441 |
_matching->set(n, INVALID); |
|
| 442 |
_status->set(n, UNMATCHED); |
|
| 447 |
(*_matching)[n] = INVALID; |
|
| 448 |
(*_status)[n] = UNMATCHED; |
|
| 443 | 449 |
} |
| 444 | 450 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 445 | 451 |
if ((*_matching)[n] == INVALID) {
|
| 446 | 452 |
for (OutArcIt a(_graph, n); a != INVALID ; ++a) {
|
| 447 | 453 |
Node v = _graph.target(a); |
| 448 | 454 |
if ((*_matching)[v] == INVALID && v != n) {
|
| 449 |
_matching->set(n, a); |
|
| 450 |
_status->set(n, MATCHED); |
|
| 451 |
_matching->set(v, _graph.oppositeArc(a)); |
|
| 452 |
_status->set(v, MATCHED); |
|
| 455 |
(*_matching)[n] = a; |
|
| 456 |
(*_status)[n] = MATCHED; |
|
| 457 |
(*_matching)[v] = _graph.oppositeArc(a); |
|
| 458 |
(*_status)[v] = MATCHED; |
|
| 453 | 459 |
break; |
| 454 | 460 |
} |
| 455 | 461 |
} |
| 456 | 462 |
} |
| 457 | 463 |
} |
| 458 | 464 |
} |
| 459 | 465 |
|
| 460 | 466 |
|
| 461 |
/// \brief Initialize the matching from a map |
|
| 467 |
/// \brief Initialize the matching from a map. |
|
| 462 | 468 |
/// |
| 463 |
/// Initialize the matching from a \c bool valued \c Edge map. This |
|
| 464 |
/// map must have the property that there are no two incident edges |
|
| 465 |
/// with true value, ie. it contains a matching. |
|
| 466 |
/// \return %True if the map contains a matching. |
|
| 469 |
/// This function initializes the matching from a \c bool valued edge |
|
| 470 |
/// map. This map should have the property that there are no two incident |
|
| 471 |
/// edges with \c true value, i.e. it really contains a matching. |
|
| 472 |
/// \return \c true if the map contains a matching. |
|
| 467 | 473 |
template <typename MatchingMap> |
| 468 | 474 |
bool matchingInit(const MatchingMap& matching) {
|
| 469 | 475 |
createStructures(); |
| 470 | 476 |
|
| 471 | 477 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 472 |
_matching->set(n, INVALID); |
|
| 473 |
_status->set(n, UNMATCHED); |
|
| 478 |
(*_matching)[n] = INVALID; |
|
| 479 |
(*_status)[n] = UNMATCHED; |
|
| 474 | 480 |
} |
| 475 | 481 |
for(EdgeIt e(_graph); e!=INVALID; ++e) {
|
| 476 | 482 |
if (matching[e]) {
|
| 477 | 483 |
|
| 478 | 484 |
Node u = _graph.u(e); |
| 479 | 485 |
if ((*_matching)[u] != INVALID) return false; |
| 480 |
_matching->set(u, _graph.direct(e, true)); |
|
| 481 |
_status->set(u, MATCHED); |
|
| 486 |
(*_matching)[u] = _graph.direct(e, true); |
|
| 487 |
(*_status)[u] = MATCHED; |
|
| 482 | 488 |
|
| 483 | 489 |
Node v = _graph.v(e); |
| 484 | 490 |
if ((*_matching)[v] != INVALID) return false; |
| 485 |
_matching->set(v, _graph.direct(e, false)); |
|
| 486 |
_status->set(v, MATCHED); |
|
| 491 |
(*_matching)[v] = _graph.direct(e, false); |
|
| 492 |
(*_status)[v] = MATCHED; |
|
| 487 | 493 |
} |
| 488 | 494 |
} |
| 489 | 495 |
return true; |
| 490 | 496 |
} |
| 491 | 497 |
|
| 492 |
/// \brief |
|
| 498 |
/// \brief Start Edmonds' algorithm |
|
| 493 | 499 |
/// |
| 494 |
/// |
|
| 500 |
/// This function runs the original Edmonds' algorithm. |
|
| 501 |
/// |
|
| 502 |
/// \pre \ref init(), \ref greedyInit() or \ref matchingInit() must be |
|
| 503 |
/// called before using this function. |
|
| 495 | 504 |
void startSparse() {
|
| 496 | 505 |
for(NodeIt n(_graph); n != INVALID; ++n) {
|
| 497 | 506 |
if ((*_status)[n] == UNMATCHED) {
|
| 498 | 507 |
(*_blossom_rep)[_blossom_set->insert(n)] = n; |
| 499 | 508 |
_tree_set->insert(n); |
| 500 |
_status |
|
| 509 |
(*_status)[n] = EVEN; |
|
| 501 | 510 |
processSparse(n); |
| 502 | 511 |
} |
| 503 | 512 |
} |
| 504 | 513 |
} |
| 505 | 514 |
|
| 506 |
/// \brief |
|
| 515 |
/// \brief Start Edmonds' algorithm with a heuristic improvement |
|
| 516 |
/// for dense graphs |
|
| 507 | 517 |
/// |
| 508 |
/// |
|
| 518 |
/// This function runs Edmonds' algorithm with a heuristic of postponing |
|
| 509 | 519 |
/// shrinks, therefore resulting in a faster algorithm for dense graphs. |
| 520 |
/// |
|
| 521 |
/// \pre \ref init(), \ref greedyInit() or \ref matchingInit() must be |
|
| 522 |
/// called before using this function. |
|
| 510 | 523 |
void startDense() {
|
| 511 | 524 |
for(NodeIt n(_graph); n != INVALID; ++n) {
|
| 512 | 525 |
if ((*_status)[n] == UNMATCHED) {
|
| 513 | 526 |
(*_blossom_rep)[_blossom_set->insert(n)] = n; |
| 514 | 527 |
_tree_set->insert(n); |
| 515 |
_status |
|
| 528 |
(*_status)[n] = EVEN; |
|
| 516 | 529 |
processDense(n); |
| 517 | 530 |
} |
| 518 | 531 |
} |
| 519 | 532 |
} |
| 520 | 533 |
|
| 521 | 534 |
|
| 522 |
/// \brief |
|
| 535 |
/// \brief Run Edmonds' algorithm |
|
| 523 | 536 |
/// |
| 524 |
/// Runs Edmonds' algorithm for sparse graphs (<tt>m<2*n</tt>) |
|
| 525 |
/// or Edmonds' algorithm with a heuristic of |
|
| 526 |
/// |
|
| 537 |
/// This function runs Edmonds' algorithm. An additional heuristic of |
|
| 538 |
/// postponing shrinks is used for relatively dense graphs |
|
| 539 |
/// (for which <tt>m>=2*n</tt> holds). |
|
| 527 | 540 |
void run() {
|
| 528 | 541 |
if (countEdges(_graph) < 2 * countNodes(_graph)) {
|
| 529 | 542 |
greedyInit(); |
| 530 | 543 |
startSparse(); |
| 531 | 544 |
} else {
|
| 532 | 545 |
init(); |
| 533 | 546 |
startDense(); |
| 534 | 547 |
} |
| 535 | 548 |
} |
| 536 | 549 |
|
| 537 | 550 |
/// @} |
| 538 | 551 |
|
| 539 |
/// \name Primal solution |
|
| 540 |
/// Functions to get the primal solution, ie. the matching. |
|
| 552 |
/// \name Primal Solution |
|
| 553 |
/// Functions to get the primal solution, i.e. the maximum matching. |
|
| 541 | 554 |
|
| 542 | 555 |
/// @{
|
| 543 | 556 |
|
| 544 |
///\brief |
|
| 557 |
/// \brief Return the size (cardinality) of the matching. |
|
| 545 | 558 |
/// |
| 546 |
///Returns the size of the current matching. After \ref |
|
| 547 |
///run() it returns the size of the maximum matching in the graph. |
|
| 559 |
/// This function returns the size (cardinality) of the current matching. |
|
| 560 |
/// After run() it returns the size of the maximum matching in the graph. |
|
| 548 | 561 |
int matchingSize() const {
|
| 549 | 562 |
int size = 0; |
| 550 | 563 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 551 | 564 |
if ((*_matching)[n] != INVALID) {
|
| 552 | 565 |
++size; |
| 553 | 566 |
} |
| 554 | 567 |
} |
| 555 | 568 |
return size / 2; |
| 556 | 569 |
} |
| 557 | 570 |
|
| 558 |
/// \brief |
|
| 571 |
/// \brief Return \c true if the given edge is in the matching. |
|
| 559 | 572 |
/// |
| 560 |
/// |
|
| 573 |
/// This function returns \c true if the given edge is in the current |
|
| 574 |
/// matching. |
|
| 561 | 575 |
bool matching(const Edge& edge) const {
|
| 562 | 576 |
return edge == (*_matching)[_graph.u(edge)]; |
| 563 | 577 |
} |
| 564 | 578 |
|
| 565 |
/// \brief |
|
| 579 |
/// \brief Return the matching arc (or edge) incident to the given node. |
|
| 566 | 580 |
/// |
| 567 |
/// Returns the matching edge of a \c node in the actual matching or |
|
| 568 |
/// INVALID if the \c node is not covered by the actual matching. |
|
| 581 |
/// This function returns the matching arc (or edge) incident to the |
|
| 582 |
/// given node in the current matching or \c INVALID if the node is |
|
| 583 |
/// not covered by the matching. |
|
| 569 | 584 |
Arc matching(const Node& n) const {
|
| 570 | 585 |
return (*_matching)[n]; |
| 571 | 586 |
} |
| 572 | 587 |
|
| 573 |
///\brief |
|
| 588 |
/// \brief Return a const reference to the matching map. |
|
| 574 | 589 |
/// |
| 575 |
///Returns the mate of a \c node in the actual matching or |
|
| 576 |
///INVALID if the \c node is not covered by the actual matching. |
|
| 590 |
/// This function returns a const reference to a node map that stores |
|
| 591 |
/// the matching arc (or edge) incident to each node. |
|
| 592 |
const MatchingMap& matchingMap() const {
|
|
| 593 |
return *_matching; |
|
| 594 |
} |
|
| 595 |
|
|
| 596 |
/// \brief Return the mate of the given node. |
|
| 597 |
/// |
|
| 598 |
/// This function returns the mate of the given node in the current |
|
| 599 |
/// matching or \c INVALID if the node is not covered by the matching. |
|
| 577 | 600 |
Node mate(const Node& n) const {
|
| 578 | 601 |
return (*_matching)[n] != INVALID ? |
| 579 | 602 |
_graph.target((*_matching)[n]) : INVALID; |
| 580 | 603 |
} |
| 581 | 604 |
|
| 582 | 605 |
/// @} |
| 583 | 606 |
|
| 584 |
/// \name Dual solution |
|
| 585 |
/// Functions to get the dual solution, ie. the decomposition. |
|
| 607 |
/// \name Dual Solution |
|
| 608 |
/// Functions to get the dual solution, i.e. the Gallai-Edmonds |
|
| 609 |
/// decomposition. |
|
| 586 | 610 |
|
| 587 | 611 |
/// @{
|
| 588 | 612 |
|
| 589 |
/// \brief |
|
| 613 |
/// \brief Return the status of the given node in the Edmonds-Gallai |
|
| 590 | 614 |
/// decomposition. |
| 591 | 615 |
/// |
| 592 |
/// Returns the class of the node in the Edmonds-Gallai |
|
| 593 |
/// decomposition. |
|
| 594 |
|
|
| 616 |
/// This function returns the \ref Status "status" of the given node |
|
| 617 |
/// in the Edmonds-Gallai decomposition. |
|
| 618 |
Status status(const Node& n) const {
|
|
| 595 | 619 |
return (*_status)[n]; |
| 596 | 620 |
} |
| 597 | 621 |
|
| 598 |
/// \brief |
|
| 622 |
/// \brief Return a const reference to the status map, which stores |
|
| 623 |
/// the Edmonds-Gallai decomposition. |
|
| 599 | 624 |
/// |
| 600 |
/// |
|
| 625 |
/// This function returns a const reference to a node map that stores the |
|
| 626 |
/// \ref Status "status" of each node in the Edmonds-Gallai decomposition. |
|
| 627 |
const StatusMap& statusMap() const {
|
|
| 628 |
return *_status; |
|
| 629 |
} |
|
| 630 |
|
|
| 631 |
/// \brief Return \c true if the given node is in the barrier. |
|
| 632 |
/// |
|
| 633 |
/// This function returns \c true if the given node is in the barrier. |
|
| 601 | 634 |
bool barrier(const Node& n) const {
|
| 602 | 635 |
return (*_status)[n] == ODD; |
| 603 | 636 |
} |
| 604 | 637 |
|
| 605 | 638 |
/// @} |
| 606 | 639 |
|
| 607 | 640 |
}; |
| 608 | 641 |
|
| 609 | 642 |
/// \ingroup matching |
| 610 | 643 |
/// |
| 611 | 644 |
/// \brief Weighted matching in general graphs |
| 612 | 645 |
/// |
| 613 | 646 |
/// This class provides an efficient implementation of Edmond's |
| 614 | 647 |
/// maximum weighted matching algorithm. The implementation is based |
| 615 | 648 |
/// on extensive use of priority queues and provides |
| 616 |
/// \f$O(nm\log |
|
| 649 |
/// \f$O(nm\log n)\f$ time complexity. |
|
| 617 | 650 |
/// |
| 618 |
/// The maximum weighted matching problem is to find undirected |
|
| 619 |
/// edges in the graph with maximum overall weight and no two of |
|
| 620 |
/// them shares their ends. The problem can be formulated with the |
|
| 621 |
/// following linear program. |
|
| 651 |
/// The maximum weighted matching problem is to find a subset of the |
|
| 652 |
/// edges in an undirected graph with maximum overall weight for which |
|
| 653 |
/// each node has at most one incident edge. |
|
| 654 |
/// It can be formulated with the following linear program. |
|
| 622 | 655 |
/// \f[ \sum_{e \in \delta(u)}x_e \le 1 \quad \forall u\in V\f]
|
| 623 | 656 |
/** \f[ \sum_{e \in \gamma(B)}x_e \le \frac{\vert B \vert - 1}{2}
|
| 624 | 657 |
\quad \forall B\in\mathcal{O}\f] */
|
| 625 | 658 |
/// \f[x_e \ge 0\quad \forall e\in E\f] |
| 626 | 659 |
/// \f[\max \sum_{e\in E}x_ew_e\f]
|
| 627 | 660 |
/// where \f$\delta(X)\f$ is the set of edges incident to a node in |
| 628 | 661 |
/// \f$X\f$, \f$\gamma(X)\f$ is the set of edges with both ends in |
| 629 | 662 |
/// \f$X\f$ and \f$\mathcal{O}\f$ is the set of odd cardinality
|
| 630 | 663 |
/// subsets of the nodes. |
| 631 | 664 |
/// |
| 632 | 665 |
/// The algorithm calculates an optimal matching and a proof of the |
| 633 | 666 |
/// optimality. The solution of the dual problem can be used to check |
| 634 | 667 |
/// the result of the algorithm. The dual linear problem is the |
| 668 |
/// following. |
|
| 635 | 669 |
/** \f[ y_u + y_v + \sum_{B \in \mathcal{O}, uv \in \gamma(B)}
|
| 636 | 670 |
z_B \ge w_{uv} \quad \forall uv\in E\f] */
|
| 637 | 671 |
/// \f[y_u \ge 0 \quad \forall u \in V\f] |
| 638 | 672 |
/// \f[z_B \ge 0 \quad \forall B \in \mathcal{O}\f]
|
| 639 | 673 |
/** \f[\min \sum_{u \in V}y_u + \sum_{B \in \mathcal{O}}
|
| 640 | 674 |
\frac{\vert B \vert - 1}{2}z_B\f] */
|
| 641 | 675 |
/// |
| 642 |
/// The algorithm can be executed with \c run() or the \c init() and |
|
| 643 |
/// then the \c start() member functions. After it the matching can |
|
| 644 |
/// be asked with \c matching() or mate() functions. The dual |
|
| 645 |
/// solution can be get with \c nodeValue(), \c blossomNum() and \c |
|
| 646 |
/// blossomValue() members and \ref MaxWeightedMatching::BlossomIt |
|
| 647 |
/// "BlossomIt" nested class, which is able to iterate on the nodes |
|
| 648 |
/// of a blossom. If the value type is integral then the dual |
|
| 649 |
/// solution is multiplied by \ref MaxWeightedMatching::dualScale "4". |
|
| 650 |
template <typename _Graph, |
|
| 651 |
typename _WeightMap = typename _Graph::template EdgeMap<int> > |
|
| 676 |
/// The algorithm can be executed with the run() function. |
|
| 677 |
/// After it the matching (the primal solution) and the dual solution |
|
| 678 |
/// can be obtained using the query functions and the |
|
| 679 |
/// \ref MaxWeightedMatching::BlossomIt "BlossomIt" nested class, |
|
| 680 |
/// which is able to iterate on the nodes of a blossom. |
|
| 681 |
/// If the value type is integer, then the dual solution is multiplied |
|
| 682 |
/// by \ref MaxWeightedMatching::dualScale "4". |
|
| 683 |
/// |
|
| 684 |
/// \tparam GR The undirected graph type the algorithm runs on. |
|
| 685 |
/// \tparam WM The type edge weight map. The default type is |
|
| 686 |
/// \ref concepts::Graph::EdgeMap "GR::EdgeMap<int>". |
|
| 687 |
#ifdef DOXYGEN |
|
| 688 |
template <typename GR, typename WM> |
|
| 689 |
#else |
|
| 690 |
template <typename GR, |
|
| 691 |
typename WM = typename GR::template EdgeMap<int> > |
|
| 692 |
#endif |
|
| 652 | 693 |
class MaxWeightedMatching {
|
| 653 | 694 |
public: |
| 654 | 695 |
|
| 655 |
typedef _Graph Graph; |
|
| 656 |
typedef _WeightMap WeightMap; |
|
| 696 |
/// The graph type of the algorithm |
|
| 697 |
typedef GR Graph; |
|
| 698 |
/// The type of the edge weight map |
|
| 699 |
typedef WM WeightMap; |
|
| 700 |
/// The value type of the edge weights |
|
| 657 | 701 |
typedef typename WeightMap::Value Value; |
| 658 | 702 |
|
| 703 |
/// The type of the matching map |
|
| 704 |
typedef typename Graph::template NodeMap<typename Graph::Arc> |
|
| 705 |
MatchingMap; |
|
| 706 |
|
|
| 659 | 707 |
/// \brief Scaling factor for dual solution |
| 660 | 708 |
/// |
| 661 |
/// Scaling factor for dual solution |
|
| 709 |
/// Scaling factor for dual solution. It is equal to 4 or 1 |
|
| 662 | 710 |
/// according to the value type. |
| 663 | 711 |
static const int dualScale = |
| 664 | 712 |
std::numeric_limits<Value>::is_integer ? 4 : 1; |
| 665 | 713 |
|
| 666 |
typedef typename Graph::template NodeMap<typename Graph::Arc> |
|
| 667 |
MatchingMap; |
|
| 668 |
|
|
| 669 | 714 |
private: |
| 670 | 715 |
|
| 671 | 716 |
TEMPLATE_GRAPH_TYPEDEFS(Graph); |
| 672 | 717 |
|
| 673 | 718 |
typedef typename Graph::template NodeMap<Value> NodePotential; |
| 674 | 719 |
typedef std::vector<Node> BlossomNodeList; |
| 675 | 720 |
|
| 676 | 721 |
struct BlossomVariable {
|
| 677 | 722 |
int begin, end; |
| 678 | 723 |
Value value; |
| 679 | 724 |
|
| 680 | 725 |
BlossomVariable(int _begin, int _end, Value _value) |
| 681 | 726 |
: begin(_begin), end(_end), value(_value) {}
|
| 682 | 727 |
|
| 683 | 728 |
}; |
| 684 | 729 |
|
| 685 | 730 |
typedef std::vector<BlossomVariable> BlossomPotential; |
| 686 | 731 |
|
| 687 | 732 |
const Graph& _graph; |
| 688 | 733 |
const WeightMap& _weight; |
| 689 | 734 |
|
| 690 | 735 |
MatchingMap* _matching; |
| 691 | 736 |
|
| 692 | 737 |
NodePotential* _node_potential; |
| 693 | 738 |
|
| 694 | 739 |
BlossomPotential _blossom_potential; |
| 695 | 740 |
BlossomNodeList _blossom_node_list; |
| 696 | 741 |
|
| 697 | 742 |
int _node_num; |
| 698 | 743 |
int _blossom_num; |
| 699 | 744 |
|
| 700 | 745 |
typedef RangeMap<int> IntIntMap; |
| 701 | 746 |
|
| 702 | 747 |
enum Status {
|
| 703 | 748 |
EVEN = -1, MATCHED = 0, ODD = 1, UNMATCHED = -2 |
| 704 | 749 |
}; |
| 705 | 750 |
|
| 706 | 751 |
typedef HeapUnionFind<Value, IntNodeMap> BlossomSet; |
| 707 | 752 |
struct BlossomData {
|
| 708 | 753 |
int tree; |
| 709 | 754 |
Status status; |
| 710 | 755 |
Arc pred, next; |
| 711 | 756 |
Value pot, offset; |
| 712 | 757 |
Node base; |
| 713 | 758 |
}; |
| 714 | 759 |
|
| 715 | 760 |
IntNodeMap *_blossom_index; |
| 716 | 761 |
BlossomSet *_blossom_set; |
| 717 | 762 |
RangeMap<BlossomData>* _blossom_data; |
| 718 | 763 |
|
| 719 | 764 |
IntNodeMap *_node_index; |
| 720 | 765 |
IntArcMap *_node_heap_index; |
| 721 | 766 |
|
| 722 | 767 |
struct NodeData {
|
| 723 | 768 |
|
| 724 | 769 |
NodeData(IntArcMap& node_heap_index) |
| 725 | 770 |
: heap(node_heap_index) {}
|
| 726 | 771 |
|
| 727 | 772 |
int blossom; |
| 728 | 773 |
Value pot; |
| 729 | 774 |
BinHeap<Value, IntArcMap> heap; |
| 730 | 775 |
std::map<int, Arc> heap_index; |
| 731 | 776 |
|
| 732 | 777 |
int tree; |
| 733 | 778 |
}; |
| 734 | 779 |
|
| 735 | 780 |
RangeMap<NodeData>* _node_data; |
| 736 | 781 |
|
| 737 | 782 |
typedef ExtendFindEnum<IntIntMap> TreeSet; |
| 738 | 783 |
|
| 739 | 784 |
IntIntMap *_tree_set_index; |
| 740 | 785 |
TreeSet *_tree_set; |
| 741 | 786 |
|
| 742 | 787 |
IntNodeMap *_delta1_index; |
| 743 | 788 |
BinHeap<Value, IntNodeMap> *_delta1; |
| 744 | 789 |
|
| 745 | 790 |
IntIntMap *_delta2_index; |
| 746 | 791 |
BinHeap<Value, IntIntMap> *_delta2; |
| 747 | 792 |
|
| 748 | 793 |
IntEdgeMap *_delta3_index; |
| 749 | 794 |
BinHeap<Value, IntEdgeMap> *_delta3; |
| 750 | 795 |
|
| 751 | 796 |
IntIntMap *_delta4_index; |
| 752 | 797 |
BinHeap<Value, IntIntMap> *_delta4; |
| 753 | 798 |
|
| 754 | 799 |
Value _delta_sum; |
| 755 | 800 |
|
| 756 | 801 |
void createStructures() {
|
| 757 | 802 |
_node_num = countNodes(_graph); |
| 758 | 803 |
_blossom_num = _node_num * 3 / 2; |
| 759 | 804 |
|
| 760 | 805 |
if (!_matching) {
|
| 761 | 806 |
_matching = new MatchingMap(_graph); |
| 762 | 807 |
} |
| 763 | 808 |
if (!_node_potential) {
|
| 764 | 809 |
_node_potential = new NodePotential(_graph); |
| 765 | 810 |
} |
| 766 | 811 |
if (!_blossom_set) {
|
| 767 | 812 |
_blossom_index = new IntNodeMap(_graph); |
| 768 | 813 |
_blossom_set = new BlossomSet(*_blossom_index); |
| 769 | 814 |
_blossom_data = new RangeMap<BlossomData>(_blossom_num); |
| 770 | 815 |
} |
| 771 | 816 |
|
| 772 | 817 |
if (!_node_index) {
|
| 773 | 818 |
_node_index = new IntNodeMap(_graph); |
| 774 | 819 |
_node_heap_index = new IntArcMap(_graph); |
| 775 | 820 |
_node_data = new RangeMap<NodeData>(_node_num, |
| 776 | 821 |
NodeData(*_node_heap_index)); |
| 777 | 822 |
} |
| 778 | 823 |
|
| 779 | 824 |
if (!_tree_set) {
|
| 780 | 825 |
_tree_set_index = new IntIntMap(_blossom_num); |
| 781 | 826 |
_tree_set = new TreeSet(*_tree_set_index); |
| 782 | 827 |
} |
| 783 | 828 |
if (!_delta1) {
|
| 784 | 829 |
_delta1_index = new IntNodeMap(_graph); |
| 785 | 830 |
_delta1 = new BinHeap<Value, IntNodeMap>(*_delta1_index); |
| 786 | 831 |
} |
| 787 | 832 |
if (!_delta2) {
|
| 788 | 833 |
_delta2_index = new IntIntMap(_blossom_num); |
| 789 | 834 |
_delta2 = new BinHeap<Value, IntIntMap>(*_delta2_index); |
| 790 | 835 |
} |
| 791 | 836 |
if (!_delta3) {
|
| 792 | 837 |
_delta3_index = new IntEdgeMap(_graph); |
| 793 | 838 |
_delta3 = new BinHeap<Value, IntEdgeMap>(*_delta3_index); |
| 794 | 839 |
} |
| 795 | 840 |
if (!_delta4) {
|
| 796 | 841 |
_delta4_index = new IntIntMap(_blossom_num); |
| 797 | 842 |
_delta4 = new BinHeap<Value, IntIntMap>(*_delta4_index); |
| 798 | 843 |
} |
| 799 | 844 |
} |
| 800 | 845 |
|
| 801 | 846 |
void destroyStructures() {
|
| 802 | 847 |
_node_num = countNodes(_graph); |
| 803 | 848 |
_blossom_num = _node_num * 3 / 2; |
| 804 | 849 |
|
| 805 | 850 |
if (_matching) {
|
| 806 | 851 |
delete _matching; |
| 807 | 852 |
} |
| 808 | 853 |
if (_node_potential) {
|
| 809 | 854 |
delete _node_potential; |
| 810 | 855 |
} |
| 811 | 856 |
if (_blossom_set) {
|
| 812 | 857 |
delete _blossom_index; |
| 813 | 858 |
delete _blossom_set; |
| 814 | 859 |
delete _blossom_data; |
| 815 | 860 |
} |
| 816 | 861 |
|
| 817 | 862 |
if (_node_index) {
|
| 818 | 863 |
delete _node_index; |
| 819 | 864 |
delete _node_heap_index; |
| 820 | 865 |
delete _node_data; |
| 821 | 866 |
} |
| 822 | 867 |
|
| 823 | 868 |
if (_tree_set) {
|
| 824 | 869 |
delete _tree_set_index; |
| 825 | 870 |
delete _tree_set; |
| 826 | 871 |
} |
| 827 | 872 |
if (_delta1) {
|
| 828 | 873 |
delete _delta1_index; |
| 829 | 874 |
delete _delta1; |
| 830 | 875 |
} |
| 831 | 876 |
if (_delta2) {
|
| 832 | 877 |
delete _delta2_index; |
| 833 | 878 |
delete _delta2; |
| 834 | 879 |
} |
| 835 | 880 |
if (_delta3) {
|
| 836 | 881 |
delete _delta3_index; |
| 837 | 882 |
delete _delta3; |
| 838 | 883 |
} |
| 839 | 884 |
if (_delta4) {
|
| 840 | 885 |
delete _delta4_index; |
| 841 | 886 |
delete _delta4; |
| 842 | 887 |
} |
| 843 | 888 |
} |
| 844 | 889 |
|
| 845 | 890 |
void matchedToEven(int blossom, int tree) {
|
| 846 | 891 |
if (_delta2->state(blossom) == _delta2->IN_HEAP) {
|
| 847 | 892 |
_delta2->erase(blossom); |
| 848 | 893 |
} |
| 849 | 894 |
|
| 850 | 895 |
if (!_blossom_set->trivial(blossom)) {
|
| 851 | 896 |
(*_blossom_data)[blossom].pot -= |
| 852 | 897 |
2 * (_delta_sum - (*_blossom_data)[blossom].offset); |
| 853 | 898 |
} |
| 854 | 899 |
|
| 855 | 900 |
for (typename BlossomSet::ItemIt n(*_blossom_set, blossom); |
| 856 | 901 |
n != INVALID; ++n) {
|
| 857 | 902 |
|
| 858 | 903 |
_blossom_set->increase(n, std::numeric_limits<Value>::max()); |
| 859 | 904 |
int ni = (*_node_index)[n]; |
| 860 | 905 |
|
| 861 | 906 |
(*_node_data)[ni].heap.clear(); |
| 862 | 907 |
(*_node_data)[ni].heap_index.clear(); |
| 863 | 908 |
|
| 864 | 909 |
(*_node_data)[ni].pot += _delta_sum - (*_blossom_data)[blossom].offset; |
| 865 | 910 |
|
| 866 | 911 |
_delta1->push(n, (*_node_data)[ni].pot); |
| 867 | 912 |
|
| 868 | 913 |
for (InArcIt e(_graph, n); e != INVALID; ++e) {
|
| 869 | 914 |
Node v = _graph.source(e); |
| 870 | 915 |
int vb = _blossom_set->find(v); |
| 871 | 916 |
int vi = (*_node_index)[v]; |
| 872 | 917 |
|
| 873 | 918 |
Value rw = (*_node_data)[ni].pot + (*_node_data)[vi].pot - |
| 874 | 919 |
dualScale * _weight[e]; |
| 875 | 920 |
|
| 876 | 921 |
if ((*_blossom_data)[vb].status == EVEN) {
|
| 877 | 922 |
if (_delta3->state(e) != _delta3->IN_HEAP && blossom != vb) {
|
| 878 | 923 |
_delta3->push(e, rw / 2); |
| 879 | 924 |
} |
| 880 | 925 |
} else if ((*_blossom_data)[vb].status == UNMATCHED) {
|
| 881 | 926 |
if (_delta3->state(e) != _delta3->IN_HEAP) {
|
| 882 | 927 |
_delta3->push(e, rw); |
| 883 | 928 |
} |
| 884 | 929 |
} else {
|
| 885 | 930 |
typename std::map<int, Arc>::iterator it = |
| 886 | 931 |
(*_node_data)[vi].heap_index.find(tree); |
| 887 | 932 |
|
| 888 | 933 |
if (it != (*_node_data)[vi].heap_index.end()) {
|
| 889 | 934 |
if ((*_node_data)[vi].heap[it->second] > rw) {
|
| 890 | 935 |
(*_node_data)[vi].heap.replace(it->second, e); |
| 891 | 936 |
(*_node_data)[vi].heap.decrease(e, rw); |
| 892 | 937 |
it->second = e; |
| 893 | 938 |
} |
| 894 | 939 |
} else {
|
| 895 | 940 |
(*_node_data)[vi].heap.push(e, rw); |
| 896 | 941 |
(*_node_data)[vi].heap_index.insert(std::make_pair(tree, e)); |
| 897 | 942 |
} |
| 898 | 943 |
|
| 899 | 944 |
if ((*_blossom_set)[v] > (*_node_data)[vi].heap.prio()) {
|
| 900 | 945 |
_blossom_set->decrease(v, (*_node_data)[vi].heap.prio()); |
| 901 | 946 |
|
| 902 | 947 |
if ((*_blossom_data)[vb].status == MATCHED) {
|
| 903 | 948 |
if (_delta2->state(vb) != _delta2->IN_HEAP) {
|
| 904 | 949 |
_delta2->push(vb, _blossom_set->classPrio(vb) - |
| 905 | 950 |
(*_blossom_data)[vb].offset); |
| 906 | 951 |
} else if ((*_delta2)[vb] > _blossom_set->classPrio(vb) - |
| 907 | 952 |
(*_blossom_data)[vb].offset){
|
| 908 | 953 |
_delta2->decrease(vb, _blossom_set->classPrio(vb) - |
| 909 | 954 |
(*_blossom_data)[vb].offset); |
| 910 | 955 |
} |
| 911 | 956 |
} |
| 912 | 957 |
} |
| 913 | 958 |
} |
| 914 | 959 |
} |
| 915 | 960 |
} |
| 916 | 961 |
(*_blossom_data)[blossom].offset = 0; |
| 917 | 962 |
} |
| 918 | 963 |
|
| 919 | 964 |
void matchedToOdd(int blossom) {
|
| 920 | 965 |
if (_delta2->state(blossom) == _delta2->IN_HEAP) {
|
| 921 | 966 |
_delta2->erase(blossom); |
| 922 | 967 |
} |
| 923 | 968 |
(*_blossom_data)[blossom].offset += _delta_sum; |
| 924 | 969 |
if (!_blossom_set->trivial(blossom)) {
|
| 925 | 970 |
_delta4->push(blossom, (*_blossom_data)[blossom].pot / 2 + |
| 926 | 971 |
(*_blossom_data)[blossom].offset); |
| 927 | 972 |
} |
| 928 | 973 |
} |
| 929 | 974 |
|
| 930 | 975 |
void evenToMatched(int blossom, int tree) {
|
| 931 | 976 |
if (!_blossom_set->trivial(blossom)) {
|
| 932 | 977 |
(*_blossom_data)[blossom].pot += 2 * _delta_sum; |
| 933 | 978 |
} |
| 934 | 979 |
|
| 935 | 980 |
for (typename BlossomSet::ItemIt n(*_blossom_set, blossom); |
| 936 | 981 |
n != INVALID; ++n) {
|
| 937 | 982 |
int ni = (*_node_index)[n]; |
| 938 | 983 |
(*_node_data)[ni].pot -= _delta_sum; |
| 939 | 984 |
|
| 940 | 985 |
_delta1->erase(n); |
| 941 | 986 |
|
| 942 | 987 |
for (InArcIt e(_graph, n); e != INVALID; ++e) {
|
| 943 | 988 |
Node v = _graph.source(e); |
| 944 | 989 |
int vb = _blossom_set->find(v); |
| 945 | 990 |
int vi = (*_node_index)[v]; |
| 946 | 991 |
|
| 947 | 992 |
Value rw = (*_node_data)[ni].pot + (*_node_data)[vi].pot - |
| 948 | 993 |
dualScale * _weight[e]; |
| 949 | 994 |
|
| 950 | 995 |
if (vb == blossom) {
|
| 951 | 996 |
if (_delta3->state(e) == _delta3->IN_HEAP) {
|
| 952 | 997 |
_delta3->erase(e); |
| 953 | 998 |
} |
| 954 | 999 |
} else if ((*_blossom_data)[vb].status == EVEN) {
|
| 955 | 1000 |
|
| 956 | 1001 |
if (_delta3->state(e) == _delta3->IN_HEAP) {
|
| 957 | 1002 |
_delta3->erase(e); |
| 958 | 1003 |
} |
| 959 | 1004 |
|
| 960 | 1005 |
int vt = _tree_set->find(vb); |
| 961 | 1006 |
|
| 962 | 1007 |
if (vt != tree) {
|
| 963 | 1008 |
|
| 964 | 1009 |
Arc r = _graph.oppositeArc(e); |
| 965 | 1010 |
|
| 966 | 1011 |
typename std::map<int, Arc>::iterator it = |
| 967 | 1012 |
(*_node_data)[ni].heap_index.find(vt); |
| 968 | 1013 |
|
| 969 | 1014 |
if (it != (*_node_data)[ni].heap_index.end()) {
|
| 970 | 1015 |
if ((*_node_data)[ni].heap[it->second] > rw) {
|
| 971 | 1016 |
(*_node_data)[ni].heap.replace(it->second, r); |
| 972 | 1017 |
(*_node_data)[ni].heap.decrease(r, rw); |
| 973 | 1018 |
it->second = r; |
| 974 | 1019 |
} |
| 975 | 1020 |
} else {
|
| 976 | 1021 |
(*_node_data)[ni].heap.push(r, rw); |
| 977 | 1022 |
(*_node_data)[ni].heap_index.insert(std::make_pair(vt, r)); |
| 978 | 1023 |
} |
| 979 | 1024 |
|
| 980 | 1025 |
if ((*_blossom_set)[n] > (*_node_data)[ni].heap.prio()) {
|
| 981 | 1026 |
_blossom_set->decrease(n, (*_node_data)[ni].heap.prio()); |
| 982 | 1027 |
|
| 983 | 1028 |
if (_delta2->state(blossom) != _delta2->IN_HEAP) {
|
| 984 | 1029 |
_delta2->push(blossom, _blossom_set->classPrio(blossom) - |
| 985 | 1030 |
(*_blossom_data)[blossom].offset); |
| 986 | 1031 |
} else if ((*_delta2)[blossom] > |
| 987 | 1032 |
_blossom_set->classPrio(blossom) - |
| 988 | 1033 |
(*_blossom_data)[blossom].offset){
|
| 989 | 1034 |
_delta2->decrease(blossom, _blossom_set->classPrio(blossom) - |
| 990 | 1035 |
(*_blossom_data)[blossom].offset); |
| 991 | 1036 |
} |
| 992 | 1037 |
} |
| 993 | 1038 |
} |
| 994 | 1039 |
|
| 995 | 1040 |
} else if ((*_blossom_data)[vb].status == UNMATCHED) {
|
| 996 | 1041 |
if (_delta3->state(e) == _delta3->IN_HEAP) {
|
| 997 | 1042 |
_delta3->erase(e); |
| 998 | 1043 |
} |
| 999 | 1044 |
} else {
|
| 1000 | 1045 |
|
| 1001 | 1046 |
typename std::map<int, Arc>::iterator it = |
| 1002 | 1047 |
(*_node_data)[vi].heap_index.find(tree); |
| 1003 | 1048 |
|
| 1004 | 1049 |
if (it != (*_node_data)[vi].heap_index.end()) {
|
| 1005 | 1050 |
(*_node_data)[vi].heap.erase(it->second); |
| 1006 | 1051 |
(*_node_data)[vi].heap_index.erase(it); |
| 1007 | 1052 |
if ((*_node_data)[vi].heap.empty()) {
|
| 1008 | 1053 |
_blossom_set->increase(v, std::numeric_limits<Value>::max()); |
| 1009 | 1054 |
} else if ((*_blossom_set)[v] < (*_node_data)[vi].heap.prio()) {
|
| 1010 | 1055 |
_blossom_set->increase(v, (*_node_data)[vi].heap.prio()); |
| 1011 | 1056 |
} |
| 1012 | 1057 |
|
| 1013 | 1058 |
if ((*_blossom_data)[vb].status == MATCHED) {
|
| 1014 | 1059 |
if (_blossom_set->classPrio(vb) == |
| 1015 | 1060 |
std::numeric_limits<Value>::max()) {
|
| 1016 | 1061 |
_delta2->erase(vb); |
| 1017 | 1062 |
} else if ((*_delta2)[vb] < _blossom_set->classPrio(vb) - |
| 1018 | 1063 |
(*_blossom_data)[vb].offset) {
|
| 1019 | 1064 |
_delta2->increase(vb, _blossom_set->classPrio(vb) - |
| 1020 | 1065 |
(*_blossom_data)[vb].offset); |
| 1021 | 1066 |
} |
| 1022 | 1067 |
} |
| 1023 | 1068 |
} |
| 1024 | 1069 |
} |
| 1025 | 1070 |
} |
| 1026 | 1071 |
} |
| 1027 | 1072 |
} |
| 1028 | 1073 |
|
| 1029 | 1074 |
void oddToMatched(int blossom) {
|
| 1030 | 1075 |
(*_blossom_data)[blossom].offset -= _delta_sum; |
| 1031 | 1076 |
|
| 1032 | 1077 |
if (_blossom_set->classPrio(blossom) != |
| 1033 | 1078 |
std::numeric_limits<Value>::max()) {
|
| 1034 | 1079 |
_delta2->push(blossom, _blossom_set->classPrio(blossom) - |
| 1035 | 1080 |
(*_blossom_data)[blossom].offset); |
| 1036 | 1081 |
} |
| 1037 | 1082 |
|
| 1038 | 1083 |
if (!_blossom_set->trivial(blossom)) {
|
| 1039 | 1084 |
_delta4->erase(blossom); |
| 1040 | 1085 |
} |
| 1041 | 1086 |
} |
| 1042 | 1087 |
|
| 1043 | 1088 |
void oddToEven(int blossom, int tree) {
|
| 1044 | 1089 |
if (!_blossom_set->trivial(blossom)) {
|
| 1045 | 1090 |
_delta4->erase(blossom); |
| 1046 | 1091 |
(*_blossom_data)[blossom].pot -= |
| 1047 | 1092 |
2 * (2 * _delta_sum - (*_blossom_data)[blossom].offset); |
| 1048 | 1093 |
} |
| 1049 | 1094 |
|
| 1050 | 1095 |
for (typename BlossomSet::ItemIt n(*_blossom_set, blossom); |
| 1051 | 1096 |
n != INVALID; ++n) {
|
| 1052 | 1097 |
int ni = (*_node_index)[n]; |
| ... | ... |
@@ -1164,1941 +1209,2036 @@ |
| 1164 | 1209 |
} else if ((*_blossom_data)[vb].status == EVEN) {
|
| 1165 | 1210 |
|
| 1166 | 1211 |
if (_delta3->state(e) == _delta3->IN_HEAP) {
|
| 1167 | 1212 |
_delta3->erase(e); |
| 1168 | 1213 |
} |
| 1169 | 1214 |
|
| 1170 | 1215 |
int vt = _tree_set->find(vb); |
| 1171 | 1216 |
|
| 1172 | 1217 |
Arc r = _graph.oppositeArc(e); |
| 1173 | 1218 |
|
| 1174 | 1219 |
typename std::map<int, Arc>::iterator it = |
| 1175 | 1220 |
(*_node_data)[ni].heap_index.find(vt); |
| 1176 | 1221 |
|
| 1177 | 1222 |
if (it != (*_node_data)[ni].heap_index.end()) {
|
| 1178 | 1223 |
if ((*_node_data)[ni].heap[it->second] > rw) {
|
| 1179 | 1224 |
(*_node_data)[ni].heap.replace(it->second, r); |
| 1180 | 1225 |
(*_node_data)[ni].heap.decrease(r, rw); |
| 1181 | 1226 |
it->second = r; |
| 1182 | 1227 |
} |
| 1183 | 1228 |
} else {
|
| 1184 | 1229 |
(*_node_data)[ni].heap.push(r, rw); |
| 1185 | 1230 |
(*_node_data)[ni].heap_index.insert(std::make_pair(vt, r)); |
| 1186 | 1231 |
} |
| 1187 | 1232 |
|
| 1188 | 1233 |
if ((*_blossom_set)[n] > (*_node_data)[ni].heap.prio()) {
|
| 1189 | 1234 |
_blossom_set->decrease(n, (*_node_data)[ni].heap.prio()); |
| 1190 | 1235 |
|
| 1191 | 1236 |
if (_delta2->state(blossom) != _delta2->IN_HEAP) {
|
| 1192 | 1237 |
_delta2->push(blossom, _blossom_set->classPrio(blossom) - |
| 1193 | 1238 |
(*_blossom_data)[blossom].offset); |
| 1194 | 1239 |
} else if ((*_delta2)[blossom] > _blossom_set->classPrio(blossom)- |
| 1195 | 1240 |
(*_blossom_data)[blossom].offset){
|
| 1196 | 1241 |
_delta2->decrease(blossom, _blossom_set->classPrio(blossom) - |
| 1197 | 1242 |
(*_blossom_data)[blossom].offset); |
| 1198 | 1243 |
} |
| 1199 | 1244 |
} |
| 1200 | 1245 |
|
| 1201 | 1246 |
} else if ((*_blossom_data)[vb].status == UNMATCHED) {
|
| 1202 | 1247 |
if (_delta3->state(e) == _delta3->IN_HEAP) {
|
| 1203 | 1248 |
_delta3->erase(e); |
| 1204 | 1249 |
} |
| 1205 | 1250 |
} |
| 1206 | 1251 |
} |
| 1207 | 1252 |
} |
| 1208 | 1253 |
} |
| 1209 | 1254 |
|
| 1210 | 1255 |
void alternatePath(int even, int tree) {
|
| 1211 | 1256 |
int odd; |
| 1212 | 1257 |
|
| 1213 | 1258 |
evenToMatched(even, tree); |
| 1214 | 1259 |
(*_blossom_data)[even].status = MATCHED; |
| 1215 | 1260 |
|
| 1216 | 1261 |
while ((*_blossom_data)[even].pred != INVALID) {
|
| 1217 | 1262 |
odd = _blossom_set->find(_graph.target((*_blossom_data)[even].pred)); |
| 1218 | 1263 |
(*_blossom_data)[odd].status = MATCHED; |
| 1219 | 1264 |
oddToMatched(odd); |
| 1220 | 1265 |
(*_blossom_data)[odd].next = (*_blossom_data)[odd].pred; |
| 1221 | 1266 |
|
| 1222 | 1267 |
even = _blossom_set->find(_graph.target((*_blossom_data)[odd].pred)); |
| 1223 | 1268 |
(*_blossom_data)[even].status = MATCHED; |
| 1224 | 1269 |
evenToMatched(even, tree); |
| 1225 | 1270 |
(*_blossom_data)[even].next = |
| 1226 | 1271 |
_graph.oppositeArc((*_blossom_data)[odd].pred); |
| 1227 | 1272 |
} |
| 1228 | 1273 |
|
| 1229 | 1274 |
} |
| 1230 | 1275 |
|
| 1231 | 1276 |
void destroyTree(int tree) {
|
| 1232 | 1277 |
for (TreeSet::ItemIt b(*_tree_set, tree); b != INVALID; ++b) {
|
| 1233 | 1278 |
if ((*_blossom_data)[b].status == EVEN) {
|
| 1234 | 1279 |
(*_blossom_data)[b].status = MATCHED; |
| 1235 | 1280 |
evenToMatched(b, tree); |
| 1236 | 1281 |
} else if ((*_blossom_data)[b].status == ODD) {
|
| 1237 | 1282 |
(*_blossom_data)[b].status = MATCHED; |
| 1238 | 1283 |
oddToMatched(b); |
| 1239 | 1284 |
} |
| 1240 | 1285 |
} |
| 1241 | 1286 |
_tree_set->eraseClass(tree); |
| 1242 | 1287 |
} |
| 1243 | 1288 |
|
| 1244 | 1289 |
|
| 1245 | 1290 |
void unmatchNode(const Node& node) {
|
| 1246 | 1291 |
int blossom = _blossom_set->find(node); |
| 1247 | 1292 |
int tree = _tree_set->find(blossom); |
| 1248 | 1293 |
|
| 1249 | 1294 |
alternatePath(blossom, tree); |
| 1250 | 1295 |
destroyTree(tree); |
| 1251 | 1296 |
|
| 1252 | 1297 |
(*_blossom_data)[blossom].status = UNMATCHED; |
| 1253 | 1298 |
(*_blossom_data)[blossom].base = node; |
| 1254 | 1299 |
matchedToUnmatched(blossom); |
| 1255 | 1300 |
} |
| 1256 | 1301 |
|
| 1257 | 1302 |
|
| 1258 | 1303 |
void augmentOnEdge(const Edge& edge) {
|
| 1259 | 1304 |
|
| 1260 | 1305 |
int left = _blossom_set->find(_graph.u(edge)); |
| 1261 | 1306 |
int right = _blossom_set->find(_graph.v(edge)); |
| 1262 | 1307 |
|
| 1263 | 1308 |
if ((*_blossom_data)[left].status == EVEN) {
|
| 1264 | 1309 |
int left_tree = _tree_set->find(left); |
| 1265 | 1310 |
alternatePath(left, left_tree); |
| 1266 | 1311 |
destroyTree(left_tree); |
| 1267 | 1312 |
} else {
|
| 1268 | 1313 |
(*_blossom_data)[left].status = MATCHED; |
| 1269 | 1314 |
unmatchedToMatched(left); |
| 1270 | 1315 |
} |
| 1271 | 1316 |
|
| 1272 | 1317 |
if ((*_blossom_data)[right].status == EVEN) {
|
| 1273 | 1318 |
int right_tree = _tree_set->find(right); |
| 1274 | 1319 |
alternatePath(right, right_tree); |
| 1275 | 1320 |
destroyTree(right_tree); |
| 1276 | 1321 |
} else {
|
| 1277 | 1322 |
(*_blossom_data)[right].status = MATCHED; |
| 1278 | 1323 |
unmatchedToMatched(right); |
| 1279 | 1324 |
} |
| 1280 | 1325 |
|
| 1281 | 1326 |
(*_blossom_data)[left].next = _graph.direct(edge, true); |
| 1282 | 1327 |
(*_blossom_data)[right].next = _graph.direct(edge, false); |
| 1283 | 1328 |
} |
| 1284 | 1329 |
|
| 1285 | 1330 |
void extendOnArc(const Arc& arc) {
|
| 1286 | 1331 |
int base = _blossom_set->find(_graph.target(arc)); |
| 1287 | 1332 |
int tree = _tree_set->find(base); |
| 1288 | 1333 |
|
| 1289 | 1334 |
int odd = _blossom_set->find(_graph.source(arc)); |
| 1290 | 1335 |
_tree_set->insert(odd, tree); |
| 1291 | 1336 |
(*_blossom_data)[odd].status = ODD; |
| 1292 | 1337 |
matchedToOdd(odd); |
| 1293 | 1338 |
(*_blossom_data)[odd].pred = arc; |
| 1294 | 1339 |
|
| 1295 | 1340 |
int even = _blossom_set->find(_graph.target((*_blossom_data)[odd].next)); |
| 1296 | 1341 |
(*_blossom_data)[even].pred = (*_blossom_data)[even].next; |
| 1297 | 1342 |
_tree_set->insert(even, tree); |
| 1298 | 1343 |
(*_blossom_data)[even].status = EVEN; |
| 1299 | 1344 |
matchedToEven(even, tree); |
| 1300 | 1345 |
} |
| 1301 | 1346 |
|
| 1302 | 1347 |
void shrinkOnEdge(const Edge& edge, int tree) {
|
| 1303 | 1348 |
int nca = -1; |
| 1304 | 1349 |
std::vector<int> left_path, right_path; |
| 1305 | 1350 |
|
| 1306 | 1351 |
{
|
| 1307 | 1352 |
std::set<int> left_set, right_set; |
| 1308 | 1353 |
int left = _blossom_set->find(_graph.u(edge)); |
| 1309 | 1354 |
left_path.push_back(left); |
| 1310 | 1355 |
left_set.insert(left); |
| 1311 | 1356 |
|
| 1312 | 1357 |
int right = _blossom_set->find(_graph.v(edge)); |
| 1313 | 1358 |
right_path.push_back(right); |
| 1314 | 1359 |
right_set.insert(right); |
| 1315 | 1360 |
|
| 1316 | 1361 |
while (true) {
|
| 1317 | 1362 |
|
| 1318 | 1363 |
if ((*_blossom_data)[left].pred == INVALID) break; |
| 1319 | 1364 |
|
| 1320 | 1365 |
left = |
| 1321 | 1366 |
_blossom_set->find(_graph.target((*_blossom_data)[left].pred)); |
| 1322 | 1367 |
left_path.push_back(left); |
| 1323 | 1368 |
left = |
| 1324 | 1369 |
_blossom_set->find(_graph.target((*_blossom_data)[left].pred)); |
| 1325 | 1370 |
left_path.push_back(left); |
| 1326 | 1371 |
|
| 1327 | 1372 |
left_set.insert(left); |
| 1328 | 1373 |
|
| 1329 | 1374 |
if (right_set.find(left) != right_set.end()) {
|
| 1330 | 1375 |
nca = left; |
| 1331 | 1376 |
break; |
| 1332 | 1377 |
} |
| 1333 | 1378 |
|
| 1334 | 1379 |
if ((*_blossom_data)[right].pred == INVALID) break; |
| 1335 | 1380 |
|
| 1336 | 1381 |
right = |
| 1337 | 1382 |
_blossom_set->find(_graph.target((*_blossom_data)[right].pred)); |
| 1338 | 1383 |
right_path.push_back(right); |
| 1339 | 1384 |
right = |
| 1340 | 1385 |
_blossom_set->find(_graph.target((*_blossom_data)[right].pred)); |
| 1341 | 1386 |
right_path.push_back(right); |
| 1342 | 1387 |
|
| 1343 | 1388 |
right_set.insert(right); |
| 1344 | 1389 |
|
| 1345 | 1390 |
if (left_set.find(right) != left_set.end()) {
|
| 1346 | 1391 |
nca = right; |
| 1347 | 1392 |
break; |
| 1348 | 1393 |
} |
| 1349 | 1394 |
|
| 1350 | 1395 |
} |
| 1351 | 1396 |
|
| 1352 | 1397 |
if (nca == -1) {
|
| 1353 | 1398 |
if ((*_blossom_data)[left].pred == INVALID) {
|
| 1354 | 1399 |
nca = right; |
| 1355 | 1400 |
while (left_set.find(nca) == left_set.end()) {
|
| 1356 | 1401 |
nca = |
| 1357 | 1402 |
_blossom_set->find(_graph.target((*_blossom_data)[nca].pred)); |
| 1358 | 1403 |
right_path.push_back(nca); |
| 1359 | 1404 |
nca = |
| 1360 | 1405 |
_blossom_set->find(_graph.target((*_blossom_data)[nca].pred)); |
| 1361 | 1406 |
right_path.push_back(nca); |
| 1362 | 1407 |
} |
| 1363 | 1408 |
} else {
|
| 1364 | 1409 |
nca = left; |
| 1365 | 1410 |
while (right_set.find(nca) == right_set.end()) {
|
| 1366 | 1411 |
nca = |
| 1367 | 1412 |
_blossom_set->find(_graph.target((*_blossom_data)[nca].pred)); |
| 1368 | 1413 |
left_path.push_back(nca); |
| 1369 | 1414 |
nca = |
| 1370 | 1415 |
_blossom_set->find(_graph.target((*_blossom_data)[nca].pred)); |
| 1371 | 1416 |
left_path.push_back(nca); |
| 1372 | 1417 |
} |
| 1373 | 1418 |
} |
| 1374 | 1419 |
} |
| 1375 | 1420 |
} |
| 1376 | 1421 |
|
| 1377 | 1422 |
std::vector<int> subblossoms; |
| 1378 | 1423 |
Arc prev; |
| 1379 | 1424 |
|
| 1380 | 1425 |
prev = _graph.direct(edge, true); |
| 1381 | 1426 |
for (int i = 0; left_path[i] != nca; i += 2) {
|
| 1382 | 1427 |
subblossoms.push_back(left_path[i]); |
| 1383 | 1428 |
(*_blossom_data)[left_path[i]].next = prev; |
| 1384 | 1429 |
_tree_set->erase(left_path[i]); |
| 1385 | 1430 |
|
| 1386 | 1431 |
subblossoms.push_back(left_path[i + 1]); |
| 1387 | 1432 |
(*_blossom_data)[left_path[i + 1]].status = EVEN; |
| 1388 | 1433 |
oddToEven(left_path[i + 1], tree); |
| 1389 | 1434 |
_tree_set->erase(left_path[i + 1]); |
| 1390 | 1435 |
prev = _graph.oppositeArc((*_blossom_data)[left_path[i + 1]].pred); |
| 1391 | 1436 |
} |
| 1392 | 1437 |
|
| 1393 | 1438 |
int k = 0; |
| 1394 | 1439 |
while (right_path[k] != nca) ++k; |
| 1395 | 1440 |
|
| 1396 | 1441 |
subblossoms.push_back(nca); |
| 1397 | 1442 |
(*_blossom_data)[nca].next = prev; |
| 1398 | 1443 |
|
| 1399 | 1444 |
for (int i = k - 2; i >= 0; i -= 2) {
|
| 1400 | 1445 |
subblossoms.push_back(right_path[i + 1]); |
| 1401 | 1446 |
(*_blossom_data)[right_path[i + 1]].status = EVEN; |
| 1402 | 1447 |
oddToEven(right_path[i + 1], tree); |
| 1403 | 1448 |
_tree_set->erase(right_path[i + 1]); |
| 1404 | 1449 |
|
| 1405 | 1450 |
(*_blossom_data)[right_path[i + 1]].next = |
| 1406 | 1451 |
(*_blossom_data)[right_path[i + 1]].pred; |
| 1407 | 1452 |
|
| 1408 | 1453 |
subblossoms.push_back(right_path[i]); |
| 1409 | 1454 |
_tree_set->erase(right_path[i]); |
| 1410 | 1455 |
} |
| 1411 | 1456 |
|
| 1412 | 1457 |
int surface = |
| 1413 | 1458 |
_blossom_set->join(subblossoms.begin(), subblossoms.end()); |
| 1414 | 1459 |
|
| 1415 | 1460 |
for (int i = 0; i < int(subblossoms.size()); ++i) {
|
| 1416 | 1461 |
if (!_blossom_set->trivial(subblossoms[i])) {
|
| 1417 | 1462 |
(*_blossom_data)[subblossoms[i]].pot += 2 * _delta_sum; |
| 1418 | 1463 |
} |
| 1419 | 1464 |
(*_blossom_data)[subblossoms[i]].status = MATCHED; |
| 1420 | 1465 |
} |
| 1421 | 1466 |
|
| 1422 | 1467 |
(*_blossom_data)[surface].pot = -2 * _delta_sum; |
| 1423 | 1468 |
(*_blossom_data)[surface].offset = 0; |
| 1424 | 1469 |
(*_blossom_data)[surface].status = EVEN; |
| 1425 | 1470 |
(*_blossom_data)[surface].pred = (*_blossom_data)[nca].pred; |
| 1426 | 1471 |
(*_blossom_data)[surface].next = (*_blossom_data)[nca].pred; |
| 1427 | 1472 |
|
| 1428 | 1473 |
_tree_set->insert(surface, tree); |
| 1429 | 1474 |
_tree_set->erase(nca); |
| 1430 | 1475 |
} |
| 1431 | 1476 |
|
| 1432 | 1477 |
void splitBlossom(int blossom) {
|
| 1433 | 1478 |
Arc next = (*_blossom_data)[blossom].next; |
| 1434 | 1479 |
Arc pred = (*_blossom_data)[blossom].pred; |
| 1435 | 1480 |
|
| 1436 | 1481 |
int tree = _tree_set->find(blossom); |
| 1437 | 1482 |
|
| 1438 | 1483 |
(*_blossom_data)[blossom].status = MATCHED; |
| 1439 | 1484 |
oddToMatched(blossom); |
| 1440 | 1485 |
if (_delta2->state(blossom) == _delta2->IN_HEAP) {
|
| 1441 | 1486 |
_delta2->erase(blossom); |
| 1442 | 1487 |
} |
| 1443 | 1488 |
|
| 1444 | 1489 |
std::vector<int> subblossoms; |
| 1445 | 1490 |
_blossom_set->split(blossom, std::back_inserter(subblossoms)); |
| 1446 | 1491 |
|
| 1447 | 1492 |
Value offset = (*_blossom_data)[blossom].offset; |
| 1448 | 1493 |
int b = _blossom_set->find(_graph.source(pred)); |
| 1449 | 1494 |
int d = _blossom_set->find(_graph.source(next)); |
| 1450 | 1495 |
|
| 1451 | 1496 |
int ib = -1, id = -1; |
| 1452 | 1497 |
for (int i = 0; i < int(subblossoms.size()); ++i) {
|
| 1453 | 1498 |
if (subblossoms[i] == b) ib = i; |
| 1454 | 1499 |
if (subblossoms[i] == d) id = i; |
| 1455 | 1500 |
|
| 1456 | 1501 |
(*_blossom_data)[subblossoms[i]].offset = offset; |
| 1457 | 1502 |
if (!_blossom_set->trivial(subblossoms[i])) {
|
| 1458 | 1503 |
(*_blossom_data)[subblossoms[i]].pot -= 2 * offset; |
| 1459 | 1504 |
} |
| 1460 | 1505 |
if (_blossom_set->classPrio(subblossoms[i]) != |
| 1461 | 1506 |
std::numeric_limits<Value>::max()) {
|
| 1462 | 1507 |
_delta2->push(subblossoms[i], |
| 1463 | 1508 |
_blossom_set->classPrio(subblossoms[i]) - |
| 1464 | 1509 |
(*_blossom_data)[subblossoms[i]].offset); |
| 1465 | 1510 |
} |
| 1466 | 1511 |
} |
| 1467 | 1512 |
|
| 1468 | 1513 |
if (id > ib ? ((id - ib) % 2 == 0) : ((ib - id) % 2 == 1)) {
|
| 1469 | 1514 |
for (int i = (id + 1) % subblossoms.size(); |
| 1470 | 1515 |
i != ib; i = (i + 2) % subblossoms.size()) {
|
| 1471 | 1516 |
int sb = subblossoms[i]; |
| 1472 | 1517 |
int tb = subblossoms[(i + 1) % subblossoms.size()]; |
| 1473 | 1518 |
(*_blossom_data)[sb].next = |
| 1474 | 1519 |
_graph.oppositeArc((*_blossom_data)[tb].next); |
| 1475 | 1520 |
} |
| 1476 | 1521 |
|
| 1477 | 1522 |
for (int i = ib; i != id; i = (i + 2) % subblossoms.size()) {
|
| 1478 | 1523 |
int sb = subblossoms[i]; |
| 1479 | 1524 |
int tb = subblossoms[(i + 1) % subblossoms.size()]; |
| 1480 | 1525 |
int ub = subblossoms[(i + 2) % subblossoms.size()]; |
| 1481 | 1526 |
|
| 1482 | 1527 |
(*_blossom_data)[sb].status = ODD; |
| 1483 | 1528 |
matchedToOdd(sb); |
| 1484 | 1529 |
_tree_set->insert(sb, tree); |
| 1485 | 1530 |
(*_blossom_data)[sb].pred = pred; |
| 1486 | 1531 |
(*_blossom_data)[sb].next = |
| 1487 | 1532 |
_graph.oppositeArc((*_blossom_data)[tb].next); |
| 1488 | 1533 |
|
| 1489 | 1534 |
pred = (*_blossom_data)[ub].next; |
| 1490 | 1535 |
|
| 1491 | 1536 |
(*_blossom_data)[tb].status = EVEN; |
| 1492 | 1537 |
matchedToEven(tb, tree); |
| 1493 | 1538 |
_tree_set->insert(tb, tree); |
| 1494 | 1539 |
(*_blossom_data)[tb].pred = (*_blossom_data)[tb].next; |
| 1495 | 1540 |
} |
| 1496 | 1541 |
|
| 1497 | 1542 |
(*_blossom_data)[subblossoms[id]].status = ODD; |
| 1498 | 1543 |
matchedToOdd(subblossoms[id]); |
| 1499 | 1544 |
_tree_set->insert(subblossoms[id], tree); |
| 1500 | 1545 |
(*_blossom_data)[subblossoms[id]].next = next; |
| 1501 | 1546 |
(*_blossom_data)[subblossoms[id]].pred = pred; |
| 1502 | 1547 |
|
| 1503 | 1548 |
} else {
|
| 1504 | 1549 |
|
| 1505 | 1550 |
for (int i = (ib + 1) % subblossoms.size(); |
| 1506 | 1551 |
i != id; i = (i + 2) % subblossoms.size()) {
|
| 1507 | 1552 |
int sb = subblossoms[i]; |
| 1508 | 1553 |
int tb = subblossoms[(i + 1) % subblossoms.size()]; |
| 1509 | 1554 |
(*_blossom_data)[sb].next = |
| 1510 | 1555 |
_graph.oppositeArc((*_blossom_data)[tb].next); |
| 1511 | 1556 |
} |
| 1512 | 1557 |
|
| 1513 | 1558 |
for (int i = id; i != ib; i = (i + 2) % subblossoms.size()) {
|
| 1514 | 1559 |
int sb = subblossoms[i]; |
| 1515 | 1560 |
int tb = subblossoms[(i + 1) % subblossoms.size()]; |
| 1516 | 1561 |
int ub = subblossoms[(i + 2) % subblossoms.size()]; |
| 1517 | 1562 |
|
| 1518 | 1563 |
(*_blossom_data)[sb].status = ODD; |
| 1519 | 1564 |
matchedToOdd(sb); |
| 1520 | 1565 |
_tree_set->insert(sb, tree); |
| 1521 | 1566 |
(*_blossom_data)[sb].next = next; |
| 1522 | 1567 |
(*_blossom_data)[sb].pred = |
| 1523 | 1568 |
_graph.oppositeArc((*_blossom_data)[tb].next); |
| 1524 | 1569 |
|
| 1525 | 1570 |
(*_blossom_data)[tb].status = EVEN; |
| 1526 | 1571 |
matchedToEven(tb, tree); |
| 1527 | 1572 |
_tree_set->insert(tb, tree); |
| 1528 | 1573 |
(*_blossom_data)[tb].pred = |
| 1529 | 1574 |
(*_blossom_data)[tb].next = |
| 1530 | 1575 |
_graph.oppositeArc((*_blossom_data)[ub].next); |
| 1531 | 1576 |
next = (*_blossom_data)[ub].next; |
| 1532 | 1577 |
} |
| 1533 | 1578 |
|
| 1534 | 1579 |
(*_blossom_data)[subblossoms[ib]].status = ODD; |
| 1535 | 1580 |
matchedToOdd(subblossoms[ib]); |
| 1536 | 1581 |
_tree_set->insert(subblossoms[ib], tree); |
| 1537 | 1582 |
(*_blossom_data)[subblossoms[ib]].next = next; |
| 1538 | 1583 |
(*_blossom_data)[subblossoms[ib]].pred = pred; |
| 1539 | 1584 |
} |
| 1540 | 1585 |
_tree_set->erase(blossom); |
| 1541 | 1586 |
} |
| 1542 | 1587 |
|
| 1543 | 1588 |
void extractBlossom(int blossom, const Node& base, const Arc& matching) {
|
| 1544 | 1589 |
if (_blossom_set->trivial(blossom)) {
|
| 1545 | 1590 |
int bi = (*_node_index)[base]; |
| 1546 | 1591 |
Value pot = (*_node_data)[bi].pot; |
| 1547 | 1592 |
|
| 1548 |
_matching |
|
| 1593 |
(*_matching)[base] = matching; |
|
| 1549 | 1594 |
_blossom_node_list.push_back(base); |
| 1550 |
_node_potential |
|
| 1595 |
(*_node_potential)[base] = pot; |
|
| 1551 | 1596 |
} else {
|
| 1552 | 1597 |
|
| 1553 | 1598 |
Value pot = (*_blossom_data)[blossom].pot; |
| 1554 | 1599 |
int bn = _blossom_node_list.size(); |
| 1555 | 1600 |
|
| 1556 | 1601 |
std::vector<int> subblossoms; |
| 1557 | 1602 |
_blossom_set->split(blossom, std::back_inserter(subblossoms)); |
| 1558 | 1603 |
int b = _blossom_set->find(base); |
| 1559 | 1604 |
int ib = -1; |
| 1560 | 1605 |
for (int i = 0; i < int(subblossoms.size()); ++i) {
|
| 1561 | 1606 |
if (subblossoms[i] == b) { ib = i; break; }
|
| 1562 | 1607 |
} |
| 1563 | 1608 |
|
| 1564 | 1609 |
for (int i = 1; i < int(subblossoms.size()); i += 2) {
|
| 1565 | 1610 |
int sb = subblossoms[(ib + i) % subblossoms.size()]; |
| 1566 | 1611 |
int tb = subblossoms[(ib + i + 1) % subblossoms.size()]; |
| 1567 | 1612 |
|
| 1568 | 1613 |
Arc m = (*_blossom_data)[tb].next; |
| 1569 | 1614 |
extractBlossom(sb, _graph.target(m), _graph.oppositeArc(m)); |
| 1570 | 1615 |
extractBlossom(tb, _graph.source(m), m); |
| 1571 | 1616 |
} |
| 1572 | 1617 |
extractBlossom(subblossoms[ib], base, matching); |
| 1573 | 1618 |
|
| 1574 | 1619 |
int en = _blossom_node_list.size(); |
| 1575 | 1620 |
|
| 1576 | 1621 |
_blossom_potential.push_back(BlossomVariable(bn, en, pot)); |
| 1577 | 1622 |
} |
| 1578 | 1623 |
} |
| 1579 | 1624 |
|
| 1580 | 1625 |
void extractMatching() {
|
| 1581 | 1626 |
std::vector<int> blossoms; |
| 1582 | 1627 |
for (typename BlossomSet::ClassIt c(*_blossom_set); c != INVALID; ++c) {
|
| 1583 | 1628 |
blossoms.push_back(c); |
| 1584 | 1629 |
} |
| 1585 | 1630 |
|
| 1586 | 1631 |
for (int i = 0; i < int(blossoms.size()); ++i) {
|
| 1587 | 1632 |
if ((*_blossom_data)[blossoms[i]].status == MATCHED) {
|
| 1588 | 1633 |
|
| 1589 | 1634 |
Value offset = (*_blossom_data)[blossoms[i]].offset; |
| 1590 | 1635 |
(*_blossom_data)[blossoms[i]].pot += 2 * offset; |
| 1591 | 1636 |
for (typename BlossomSet::ItemIt n(*_blossom_set, blossoms[i]); |
| 1592 | 1637 |
n != INVALID; ++n) {
|
| 1593 | 1638 |
(*_node_data)[(*_node_index)[n]].pot -= offset; |
| 1594 | 1639 |
} |
| 1595 | 1640 |
|
| 1596 | 1641 |
Arc matching = (*_blossom_data)[blossoms[i]].next; |
| 1597 | 1642 |
Node base = _graph.source(matching); |
| 1598 | 1643 |
extractBlossom(blossoms[i], base, matching); |
| 1599 | 1644 |
} else {
|
| 1600 | 1645 |
Node base = (*_blossom_data)[blossoms[i]].base; |
| 1601 | 1646 |
extractBlossom(blossoms[i], base, INVALID); |
| 1602 | 1647 |
} |
| 1603 | 1648 |
} |
| 1604 | 1649 |
} |
| 1605 | 1650 |
|
| 1606 | 1651 |
public: |
| 1607 | 1652 |
|
| 1608 | 1653 |
/// \brief Constructor |
| 1609 | 1654 |
/// |
| 1610 | 1655 |
/// Constructor. |
| 1611 | 1656 |
MaxWeightedMatching(const Graph& graph, const WeightMap& weight) |
| 1612 | 1657 |
: _graph(graph), _weight(weight), _matching(0), |
| 1613 | 1658 |
_node_potential(0), _blossom_potential(), _blossom_node_list(), |
| 1614 | 1659 |
_node_num(0), _blossom_num(0), |
| 1615 | 1660 |
|
| 1616 | 1661 |
_blossom_index(0), _blossom_set(0), _blossom_data(0), |
| 1617 | 1662 |
_node_index(0), _node_heap_index(0), _node_data(0), |
| 1618 | 1663 |
_tree_set_index(0), _tree_set(0), |
| 1619 | 1664 |
|
| 1620 | 1665 |
_delta1_index(0), _delta1(0), |
| 1621 | 1666 |
_delta2_index(0), _delta2(0), |
| 1622 | 1667 |
_delta3_index(0), _delta3(0), |
| 1623 | 1668 |
_delta4_index(0), _delta4(0), |
| 1624 | 1669 |
|
| 1625 | 1670 |
_delta_sum() {}
|
| 1626 | 1671 |
|
| 1627 | 1672 |
~MaxWeightedMatching() {
|
| 1628 | 1673 |
destroyStructures(); |
| 1629 | 1674 |
} |
| 1630 | 1675 |
|
| 1631 |
/// \name Execution |
|
| 1676 |
/// \name Execution Control |
|
| 1632 | 1677 |
/// The simplest way to execute the algorithm is to use the |
| 1633 |
/// \ |
|
| 1678 |
/// \ref run() member function. |
|
| 1634 | 1679 |
|
| 1635 | 1680 |
///@{
|
| 1636 | 1681 |
|
| 1637 | 1682 |
/// \brief Initialize the algorithm |
| 1638 | 1683 |
/// |
| 1639 |
/// |
|
| 1684 |
/// This function initializes the algorithm. |
|
| 1640 | 1685 |
void init() {
|
| 1641 | 1686 |
createStructures(); |
| 1642 | 1687 |
|
| 1643 | 1688 |
for (ArcIt e(_graph); e != INVALID; ++e) {
|
| 1644 |
_node_heap_index |
|
| 1689 |
(*_node_heap_index)[e] = BinHeap<Value, IntArcMap>::PRE_HEAP; |
|
| 1645 | 1690 |
} |
| 1646 | 1691 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 1647 |
_delta1_index |
|
| 1692 |
(*_delta1_index)[n] = _delta1->PRE_HEAP; |
|
| 1648 | 1693 |
} |
| 1649 | 1694 |
for (EdgeIt e(_graph); e != INVALID; ++e) {
|
| 1650 |
_delta3_index |
|
| 1695 |
(*_delta3_index)[e] = _delta3->PRE_HEAP; |
|
| 1651 | 1696 |
} |
| 1652 | 1697 |
for (int i = 0; i < _blossom_num; ++i) {
|
| 1653 |
_delta2_index->set(i, _delta2->PRE_HEAP); |
|
| 1654 |
_delta4_index->set(i, _delta4->PRE_HEAP); |
|
| 1698 |
(*_delta2_index)[i] = _delta2->PRE_HEAP; |
|
| 1699 |
(*_delta4_index)[i] = _delta4->PRE_HEAP; |
|
| 1655 | 1700 |
} |
| 1656 | 1701 |
|
| 1657 | 1702 |
int index = 0; |
| 1658 | 1703 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 1659 | 1704 |
Value max = 0; |
| 1660 | 1705 |
for (OutArcIt e(_graph, n); e != INVALID; ++e) {
|
| 1661 | 1706 |
if (_graph.target(e) == n) continue; |
| 1662 | 1707 |
if ((dualScale * _weight[e]) / 2 > max) {
|
| 1663 | 1708 |
max = (dualScale * _weight[e]) / 2; |
| 1664 | 1709 |
} |
| 1665 | 1710 |
} |
| 1666 |
_node_index |
|
| 1711 |
(*_node_index)[n] = index; |
|
| 1667 | 1712 |
(*_node_data)[index].pot = max; |
| 1668 | 1713 |
_delta1->push(n, max); |
| 1669 | 1714 |
int blossom = |
| 1670 | 1715 |
_blossom_set->insert(n, std::numeric_limits<Value>::max()); |
| 1671 | 1716 |
|
| 1672 | 1717 |
_tree_set->insert(blossom); |
| 1673 | 1718 |
|
| 1674 | 1719 |
(*_blossom_data)[blossom].status = EVEN; |
| 1675 | 1720 |
(*_blossom_data)[blossom].pred = INVALID; |
| 1676 | 1721 |
(*_blossom_data)[blossom].next = INVALID; |
| 1677 | 1722 |
(*_blossom_data)[blossom].pot = 0; |
| 1678 | 1723 |
(*_blossom_data)[blossom].offset = 0; |
| 1679 | 1724 |
++index; |
| 1680 | 1725 |
} |
| 1681 | 1726 |
for (EdgeIt e(_graph); e != INVALID; ++e) {
|
| 1682 | 1727 |
int si = (*_node_index)[_graph.u(e)]; |
| 1683 | 1728 |
int ti = (*_node_index)[_graph.v(e)]; |
| 1684 | 1729 |
if (_graph.u(e) != _graph.v(e)) {
|
| 1685 | 1730 |
_delta3->push(e, ((*_node_data)[si].pot + (*_node_data)[ti].pot - |
| 1686 | 1731 |
dualScale * _weight[e]) / 2); |
| 1687 | 1732 |
} |
| 1688 | 1733 |
} |
| 1689 | 1734 |
} |
| 1690 | 1735 |
|
| 1691 |
/// \brief |
|
| 1736 |
/// \brief Start the algorithm |
|
| 1692 | 1737 |
/// |
| 1693 |
/// |
|
| 1738 |
/// This function starts the algorithm. |
|
| 1739 |
/// |
|
| 1740 |
/// \pre \ref init() must be called before using this function. |
|
| 1694 | 1741 |
void start() {
|
| 1695 | 1742 |
enum OpType {
|
| 1696 | 1743 |
D1, D2, D3, D4 |
| 1697 | 1744 |
}; |
| 1698 | 1745 |
|
| 1699 | 1746 |
int unmatched = _node_num; |
| 1700 | 1747 |
while (unmatched > 0) {
|
| 1701 | 1748 |
Value d1 = !_delta1->empty() ? |
| 1702 | 1749 |
_delta1->prio() : std::numeric_limits<Value>::max(); |
| 1703 | 1750 |
|
| 1704 | 1751 |
Value d2 = !_delta2->empty() ? |
| 1705 | 1752 |
_delta2->prio() : std::numeric_limits<Value>::max(); |
| 1706 | 1753 |
|
| 1707 | 1754 |
Value d3 = !_delta3->empty() ? |
| 1708 | 1755 |
_delta3->prio() : std::numeric_limits<Value>::max(); |
| 1709 | 1756 |
|
| 1710 | 1757 |
Value d4 = !_delta4->empty() ? |
| 1711 | 1758 |
_delta4->prio() : std::numeric_limits<Value>::max(); |
| 1712 | 1759 |
|
| 1713 | 1760 |
_delta_sum = d1; OpType ot = D1; |
| 1714 | 1761 |
if (d2 < _delta_sum) { _delta_sum = d2; ot = D2; }
|
| 1715 | 1762 |
if (d3 < _delta_sum) { _delta_sum = d3; ot = D3; }
|
| 1716 | 1763 |
if (d4 < _delta_sum) { _delta_sum = d4; ot = D4; }
|
| 1717 | 1764 |
|
| 1718 | 1765 |
|
| 1719 | 1766 |
switch (ot) {
|
| 1720 | 1767 |
case D1: |
| 1721 | 1768 |
{
|
| 1722 | 1769 |
Node n = _delta1->top(); |
| 1723 | 1770 |
unmatchNode(n); |
| 1724 | 1771 |
--unmatched; |
| 1725 | 1772 |
} |
| 1726 | 1773 |
break; |
| 1727 | 1774 |
case D2: |
| 1728 | 1775 |
{
|
| 1729 | 1776 |
int blossom = _delta2->top(); |
| 1730 | 1777 |
Node n = _blossom_set->classTop(blossom); |
| 1731 | 1778 |
Arc e = (*_node_data)[(*_node_index)[n]].heap.top(); |
| 1732 | 1779 |
extendOnArc(e); |
| 1733 | 1780 |
} |
| 1734 | 1781 |
break; |
| 1735 | 1782 |
case D3: |
| 1736 | 1783 |
{
|
| 1737 | 1784 |
Edge e = _delta3->top(); |
| 1738 | 1785 |
|
| 1739 | 1786 |
int left_blossom = _blossom_set->find(_graph.u(e)); |
| 1740 | 1787 |
int right_blossom = _blossom_set->find(_graph.v(e)); |
| 1741 | 1788 |
|
| 1742 | 1789 |
if (left_blossom == right_blossom) {
|
| 1743 | 1790 |
_delta3->pop(); |
| 1744 | 1791 |
} else {
|
| 1745 | 1792 |
int left_tree; |
| 1746 | 1793 |
if ((*_blossom_data)[left_blossom].status == EVEN) {
|
| 1747 | 1794 |
left_tree = _tree_set->find(left_blossom); |
| 1748 | 1795 |
} else {
|
| 1749 | 1796 |
left_tree = -1; |
| 1750 | 1797 |
++unmatched; |
| 1751 | 1798 |
} |
| 1752 | 1799 |
int right_tree; |
| 1753 | 1800 |
if ((*_blossom_data)[right_blossom].status == EVEN) {
|
| 1754 | 1801 |
right_tree = _tree_set->find(right_blossom); |
| 1755 | 1802 |
} else {
|
| 1756 | 1803 |
right_tree = -1; |
| 1757 | 1804 |
++unmatched; |
| 1758 | 1805 |
} |
| 1759 | 1806 |
|
| 1760 | 1807 |
if (left_tree == right_tree) {
|
| 1761 | 1808 |
shrinkOnEdge(e, left_tree); |
| 1762 | 1809 |
} else {
|
| 1763 | 1810 |
augmentOnEdge(e); |
| 1764 | 1811 |
unmatched -= 2; |
| 1765 | 1812 |
} |
| 1766 | 1813 |
} |
| 1767 | 1814 |
} break; |
| 1768 | 1815 |
case D4: |
| 1769 | 1816 |
splitBlossom(_delta4->top()); |
| 1770 | 1817 |
break; |
| 1771 | 1818 |
} |
| 1772 | 1819 |
} |
| 1773 | 1820 |
extractMatching(); |
| 1774 | 1821 |
} |
| 1775 | 1822 |
|
| 1776 |
/// \brief |
|
| 1823 |
/// \brief Run the algorithm. |
|
| 1777 | 1824 |
/// |
| 1778 |
/// This method runs the %MaxWeightedMatching algorithm. |
|
| 1825 |
/// This method runs the \c %MaxWeightedMatching algorithm. |
|
| 1779 | 1826 |
/// |
| 1780 | 1827 |
/// \note mwm.run() is just a shortcut of the following code. |
| 1781 | 1828 |
/// \code |
| 1782 | 1829 |
/// mwm.init(); |
| 1783 | 1830 |
/// mwm.start(); |
| 1784 | 1831 |
/// \endcode |
| 1785 | 1832 |
void run() {
|
| 1786 | 1833 |
init(); |
| 1787 | 1834 |
start(); |
| 1788 | 1835 |
} |
| 1789 | 1836 |
|
| 1790 | 1837 |
/// @} |
| 1791 | 1838 |
|
| 1792 |
/// \name Primal solution |
|
| 1793 |
/// Functions to get the primal solution, ie. the matching. |
|
| 1839 |
/// \name Primal Solution |
|
| 1840 |
/// Functions to get the primal solution, i.e. the maximum weighted |
|
| 1841 |
/// matching.\n |
|
| 1842 |
/// Either \ref run() or \ref start() function should be called before |
|
| 1843 |
/// using them. |
|
| 1794 | 1844 |
|
| 1795 | 1845 |
/// @{
|
| 1796 | 1846 |
|
| 1797 |
/// \brief |
|
| 1847 |
/// \brief Return the weight of the matching. |
|
| 1798 | 1848 |
/// |
| 1799 |
/// Returns the weight of the matching. |
|
| 1800 |
Value matchingValue() const {
|
|
| 1849 |
/// This function returns the weight of the found matching. |
|
| 1850 |
/// |
|
| 1851 |
/// \pre Either run() or start() must be called before using this function. |
|
| 1852 |
Value matchingWeight() const {
|
|
| 1801 | 1853 |
Value sum = 0; |
| 1802 | 1854 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 1803 | 1855 |
if ((*_matching)[n] != INVALID) {
|
| 1804 | 1856 |
sum += _weight[(*_matching)[n]]; |
| 1805 | 1857 |
} |
| 1806 | 1858 |
} |
| 1807 | 1859 |
return sum /= 2; |
| 1808 | 1860 |
} |
| 1809 | 1861 |
|
| 1810 |
/// \brief |
|
| 1862 |
/// \brief Return the size (cardinality) of the matching. |
|
| 1811 | 1863 |
/// |
| 1812 |
/// |
|
| 1864 |
/// This function returns the size (cardinality) of the found matching. |
|
| 1865 |
/// |
|
| 1866 |
/// \pre Either run() or start() must be called before using this function. |
|
| 1813 | 1867 |
int matchingSize() const {
|
| 1814 | 1868 |
int num = 0; |
| 1815 | 1869 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 1816 | 1870 |
if ((*_matching)[n] != INVALID) {
|
| 1817 | 1871 |
++num; |
| 1818 | 1872 |
} |
| 1819 | 1873 |
} |
| 1820 | 1874 |
return num /= 2; |
| 1821 | 1875 |
} |
| 1822 | 1876 |
|
| 1823 |
/// \brief |
|
| 1877 |
/// \brief Return \c true if the given edge is in the matching. |
|
| 1824 | 1878 |
/// |
| 1825 |
/// |
|
| 1879 |
/// This function returns \c true if the given edge is in the found |
|
| 1880 |
/// matching. |
|
| 1881 |
/// |
|
| 1882 |
/// \pre Either run() or start() must be called before using this function. |
|
| 1826 | 1883 |
bool matching(const Edge& edge) const {
|
| 1827 | 1884 |
return edge == (*_matching)[_graph.u(edge)]; |
| 1828 | 1885 |
} |
| 1829 | 1886 |
|
| 1830 |
/// \brief |
|
| 1887 |
/// \brief Return the matching arc (or edge) incident to the given node. |
|
| 1831 | 1888 |
/// |
| 1832 |
/// Returns the incident matching arc from given node. If the |
|
| 1833 |
/// node is not matched then it gives back \c INVALID. |
|
| 1889 |
/// This function returns the matching arc (or edge) incident to the |
|
| 1890 |
/// given node in the found matching or \c INVALID if the node is |
|
| 1891 |
/// not covered by the matching. |
|
| 1892 |
/// |
|
| 1893 |
/// \pre Either run() or start() must be called before using this function. |
|
| 1834 | 1894 |
Arc matching(const Node& node) const {
|
| 1835 | 1895 |
return (*_matching)[node]; |
| 1836 | 1896 |
} |
| 1837 | 1897 |
|
| 1838 |
/// \brief |
|
| 1898 |
/// \brief Return a const reference to the matching map. |
|
| 1839 | 1899 |
/// |
| 1840 |
/// Returns the adjancent node in a mathcing arc. If the node is |
|
| 1841 |
/// not matched then it gives back \c INVALID. |
|
| 1900 |
/// This function returns a const reference to a node map that stores |
|
| 1901 |
/// the matching arc (or edge) incident to each node. |
|
| 1902 |
const MatchingMap& matchingMap() const {
|
|
| 1903 |
return *_matching; |
|
| 1904 |
} |
|
| 1905 |
|
|
| 1906 |
/// \brief Return the mate of the given node. |
|
| 1907 |
/// |
|
| 1908 |
/// This function returns the mate of the given node in the found |
|
| 1909 |
/// matching or \c INVALID if the node is not covered by the matching. |
|
| 1910 |
/// |
|
| 1911 |
/// \pre Either run() or start() must be called before using this function. |
|
| 1842 | 1912 |
Node mate(const Node& node) const {
|
| 1843 | 1913 |
return (*_matching)[node] != INVALID ? |
| 1844 | 1914 |
_graph.target((*_matching)[node]) : INVALID; |
| 1845 | 1915 |
} |
| 1846 | 1916 |
|
| 1847 | 1917 |
/// @} |
| 1848 | 1918 |
|
| 1849 |
/// \name Dual solution |
|
| 1850 |
/// Functions to get the dual solution. |
|
| 1919 |
/// \name Dual Solution |
|
| 1920 |
/// Functions to get the dual solution.\n |
|
| 1921 |
/// Either \ref run() or \ref start() function should be called before |
|
| 1922 |
/// using them. |
|
| 1851 | 1923 |
|
| 1852 | 1924 |
/// @{
|
| 1853 | 1925 |
|
| 1854 |
/// \brief |
|
| 1926 |
/// \brief Return the value of the dual solution. |
|
| 1855 | 1927 |
/// |
| 1856 |
/// Returns the value of the dual solution. It should be equal to |
|
| 1857 |
/// the primal value scaled by \ref dualScale "dual scale". |
|
| 1928 |
/// This function returns the value of the dual solution. |
|
| 1929 |
/// It should be equal to the primal value scaled by \ref dualScale |
|
| 1930 |
/// "dual scale". |
|
| 1931 |
/// |
|
| 1932 |
/// \pre Either run() or start() must be called before using this function. |
|
| 1858 | 1933 |
Value dualValue() const {
|
| 1859 | 1934 |
Value sum = 0; |
| 1860 | 1935 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 1861 | 1936 |
sum += nodeValue(n); |
| 1862 | 1937 |
} |
| 1863 | 1938 |
for (int i = 0; i < blossomNum(); ++i) {
|
| 1864 | 1939 |
sum += blossomValue(i) * (blossomSize(i) / 2); |
| 1865 | 1940 |
} |
| 1866 | 1941 |
return sum; |
| 1867 | 1942 |
} |
| 1868 | 1943 |
|
| 1869 |
/// \brief |
|
| 1944 |
/// \brief Return the dual value (potential) of the given node. |
|
| 1870 | 1945 |
/// |
| 1871 |
/// |
|
| 1946 |
/// This function returns the dual value (potential) of the given node. |
|
| 1947 |
/// |
|
| 1948 |
/// \pre Either run() or start() must be called before using this function. |
|
| 1872 | 1949 |
Value nodeValue(const Node& n) const {
|
| 1873 | 1950 |
return (*_node_potential)[n]; |
| 1874 | 1951 |
} |
| 1875 | 1952 |
|
| 1876 |
/// \brief |
|
| 1953 |
/// \brief Return the number of the blossoms in the basis. |
|
| 1877 | 1954 |
/// |
| 1878 |
/// |
|
| 1955 |
/// This function returns the number of the blossoms in the basis. |
|
| 1956 |
/// |
|
| 1957 |
/// \pre Either run() or start() must be called before using this function. |
|
| 1879 | 1958 |
/// \see BlossomIt |
| 1880 | 1959 |
int blossomNum() const {
|
| 1881 | 1960 |
return _blossom_potential.size(); |
| 1882 | 1961 |
} |
| 1883 | 1962 |
|
| 1884 |
|
|
| 1885 |
/// \brief Returns the number of the nodes in the blossom. |
|
| 1963 |
/// \brief Return the number of the nodes in the given blossom. |
|
| 1886 | 1964 |
/// |
| 1887 |
/// |
|
| 1965 |
/// This function returns the number of the nodes in the given blossom. |
|
| 1966 |
/// |
|
| 1967 |
/// \pre Either run() or start() must be called before using this function. |
|
| 1968 |
/// \see BlossomIt |
|
| 1888 | 1969 |
int blossomSize(int k) const {
|
| 1889 | 1970 |
return _blossom_potential[k].end - _blossom_potential[k].begin; |
| 1890 | 1971 |
} |
| 1891 | 1972 |
|
| 1892 |
/// \brief |
|
| 1973 |
/// \brief Return the dual value (ptential) of the given blossom. |
|
| 1893 | 1974 |
/// |
| 1894 |
/// Returns the the value of the blossom. |
|
| 1895 |
/// \see BlossomIt |
|
| 1975 |
/// This function returns the dual value (ptential) of the given blossom. |
|
| 1976 |
/// |
|
| 1977 |
/// \pre Either run() or start() must be called before using this function. |
|
| 1896 | 1978 |
Value blossomValue(int k) const {
|
| 1897 | 1979 |
return _blossom_potential[k].value; |
| 1898 | 1980 |
} |
| 1899 | 1981 |
|
| 1900 |
/// \brief Iterator for obtaining the nodes of |
|
| 1982 |
/// \brief Iterator for obtaining the nodes of a blossom. |
|
| 1901 | 1983 |
/// |
| 1902 |
/// Iterator for obtaining the nodes of the blossom. This class |
|
| 1903 |
/// provides a common lemon style iterator for listing a |
|
| 1904 |
/// |
|
| 1984 |
/// This class provides an iterator for obtaining the nodes of the |
|
| 1985 |
/// given blossom. It lists a subset of the nodes. |
|
| 1986 |
/// Before using this iterator, you must allocate a |
|
| 1987 |
/// MaxWeightedMatching class and execute it. |
|
| 1905 | 1988 |
class BlossomIt {
|
| 1906 | 1989 |
public: |
| 1907 | 1990 |
|
| 1908 | 1991 |
/// \brief Constructor. |
| 1909 | 1992 |
/// |
| 1910 |
/// Constructor to get the nodes of the variable. |
|
| 1993 |
/// Constructor to get the nodes of the given variable. |
|
| 1994 |
/// |
|
| 1995 |
/// \pre Either \ref MaxWeightedMatching::run() "algorithm.run()" or |
|
| 1996 |
/// \ref MaxWeightedMatching::start() "algorithm.start()" must be |
|
| 1997 |
/// called before initializing this iterator. |
|
| 1911 | 1998 |
BlossomIt(const MaxWeightedMatching& algorithm, int variable) |
| 1912 | 1999 |
: _algorithm(&algorithm) |
| 1913 | 2000 |
{
|
| 1914 | 2001 |
_index = _algorithm->_blossom_potential[variable].begin; |
| 1915 | 2002 |
_last = _algorithm->_blossom_potential[variable].end; |
| 1916 | 2003 |
} |
| 1917 | 2004 |
|
| 1918 |
/// \brief Conversion to |
|
| 2005 |
/// \brief Conversion to \c Node. |
|
| 1919 | 2006 |
/// |
| 1920 |
/// Conversion to |
|
| 2007 |
/// Conversion to \c Node. |
|
| 1921 | 2008 |
operator Node() const {
|
| 1922 | 2009 |
return _algorithm->_blossom_node_list[_index]; |
| 1923 | 2010 |
} |
| 1924 | 2011 |
|
| 1925 | 2012 |
/// \brief Increment operator. |
| 1926 | 2013 |
/// |
| 1927 | 2014 |
/// Increment operator. |
| 1928 | 2015 |
BlossomIt& operator++() {
|
| 1929 | 2016 |
++_index; |
| 1930 | 2017 |
return *this; |
| 1931 | 2018 |
} |
| 1932 | 2019 |
|
| 1933 | 2020 |
/// \brief Validity checking |
| 1934 | 2021 |
/// |
| 1935 | 2022 |
/// Checks whether the iterator is invalid. |
| 1936 | 2023 |
bool operator==(Invalid) const { return _index == _last; }
|
| 1937 | 2024 |
|
| 1938 | 2025 |
/// \brief Validity checking |
| 1939 | 2026 |
/// |
| 1940 | 2027 |
/// Checks whether the iterator is valid. |
| 1941 | 2028 |
bool operator!=(Invalid) const { return _index != _last; }
|
| 1942 | 2029 |
|
| 1943 | 2030 |
private: |
| 1944 | 2031 |
const MaxWeightedMatching* _algorithm; |
| 1945 | 2032 |
int _last; |
| 1946 | 2033 |
int _index; |
| 1947 | 2034 |
}; |
| 1948 | 2035 |
|
| 1949 | 2036 |
/// @} |
| 1950 | 2037 |
|
| 1951 | 2038 |
}; |
| 1952 | 2039 |
|
| 1953 | 2040 |
/// \ingroup matching |
| 1954 | 2041 |
/// |
| 1955 | 2042 |
/// \brief Weighted perfect matching in general graphs |
| 1956 | 2043 |
/// |
| 1957 | 2044 |
/// This class provides an efficient implementation of Edmond's |
| 1958 | 2045 |
/// maximum weighted perfect matching algorithm. The implementation |
| 1959 | 2046 |
/// is based on extensive use of priority queues and provides |
| 1960 |
/// \f$O(nm\log |
|
| 2047 |
/// \f$O(nm\log n)\f$ time complexity. |
|
| 1961 | 2048 |
/// |
| 1962 |
/// The maximum weighted matching problem is to find undirected |
|
| 1963 |
/// edges in the graph with maximum overall weight and no two of |
|
| 1964 |
/// them shares their ends and covers all nodes. The problem can be |
|
| 1965 |
/// formulated with the following linear program. |
|
| 2049 |
/// The maximum weighted perfect matching problem is to find a subset of |
|
| 2050 |
/// the edges in an undirected graph with maximum overall weight for which |
|
| 2051 |
/// each node has exactly one incident edge. |
|
| 2052 |
/// It can be formulated with the following linear program. |
|
| 1966 | 2053 |
/// \f[ \sum_{e \in \delta(u)}x_e = 1 \quad \forall u\in V\f]
|
| 1967 | 2054 |
/** \f[ \sum_{e \in \gamma(B)}x_e \le \frac{\vert B \vert - 1}{2}
|
| 1968 | 2055 |
\quad \forall B\in\mathcal{O}\f] */
|
| 1969 | 2056 |
/// \f[x_e \ge 0\quad \forall e\in E\f] |
| 1970 | 2057 |
/// \f[\max \sum_{e\in E}x_ew_e\f]
|
| 1971 | 2058 |
/// where \f$\delta(X)\f$ is the set of edges incident to a node in |
| 1972 | 2059 |
/// \f$X\f$, \f$\gamma(X)\f$ is the set of edges with both ends in |
| 1973 | 2060 |
/// \f$X\f$ and \f$\mathcal{O}\f$ is the set of odd cardinality
|
| 1974 | 2061 |
/// subsets of the nodes. |
| 1975 | 2062 |
/// |
| 1976 | 2063 |
/// The algorithm calculates an optimal matching and a proof of the |
| 1977 | 2064 |
/// optimality. The solution of the dual problem can be used to check |
| 1978 | 2065 |
/// the result of the algorithm. The dual linear problem is the |
| 2066 |
/// following. |
|
| 1979 | 2067 |
/** \f[ y_u + y_v + \sum_{B \in \mathcal{O}, uv \in \gamma(B)}z_B \ge
|
| 1980 | 2068 |
w_{uv} \quad \forall uv\in E\f] */
|
| 1981 | 2069 |
/// \f[z_B \ge 0 \quad \forall B \in \mathcal{O}\f]
|
| 1982 | 2070 |
/** \f[\min \sum_{u \in V}y_u + \sum_{B \in \mathcal{O}}
|
| 1983 | 2071 |
\frac{\vert B \vert - 1}{2}z_B\f] */
|
| 1984 | 2072 |
/// |
| 1985 |
/// The algorithm can be executed with \c run() or the \c init() and |
|
| 1986 |
/// then the \c start() member functions. After it the matching can |
|
| 1987 |
/// be asked with \c matching() or mate() functions. The dual |
|
| 1988 |
/// solution can be get with \c nodeValue(), \c blossomNum() and \c |
|
| 1989 |
/// blossomValue() members and \ref MaxWeightedMatching::BlossomIt |
|
| 1990 |
/// "BlossomIt" nested class which is able to iterate on the nodes |
|
| 1991 |
/// of a blossom. If the value type is integral then the dual |
|
| 1992 |
/// solution is multiplied by \ref MaxWeightedMatching::dualScale "4". |
|
| 1993 |
template <typename _Graph, |
|
| 1994 |
typename _WeightMap = typename _Graph::template EdgeMap<int> > |
|
| 2073 |
/// The algorithm can be executed with the run() function. |
|
| 2074 |
/// After it the matching (the primal solution) and the dual solution |
|
| 2075 |
/// can be obtained using the query functions and the |
|
| 2076 |
/// \ref MaxWeightedPerfectMatching::BlossomIt "BlossomIt" nested class, |
|
| 2077 |
/// which is able to iterate on the nodes of a blossom. |
|
| 2078 |
/// If the value type is integer, then the dual solution is multiplied |
|
| 2079 |
/// by \ref MaxWeightedMatching::dualScale "4". |
|
| 2080 |
/// |
|
| 2081 |
/// \tparam GR The undirected graph type the algorithm runs on. |
|
| 2082 |
/// \tparam WM The type edge weight map. The default type is |
|
| 2083 |
/// \ref concepts::Graph::EdgeMap "GR::EdgeMap<int>". |
|
| 2084 |
#ifdef DOXYGEN |
|
| 2085 |
template <typename GR, typename WM> |
|
| 2086 |
#else |
|
| 2087 |
template <typename GR, |
|
| 2088 |
typename WM = typename GR::template EdgeMap<int> > |
|
| 2089 |
#endif |
|
| 1995 | 2090 |
class MaxWeightedPerfectMatching {
|
| 1996 | 2091 |
public: |
| 1997 | 2092 |
|
| 1998 |
typedef _Graph Graph; |
|
| 1999 |
typedef _WeightMap WeightMap; |
|
| 2093 |
/// The graph type of the algorithm |
|
| 2094 |
typedef GR Graph; |
|
| 2095 |
/// The type of the edge weight map |
|
| 2096 |
typedef WM WeightMap; |
|
| 2097 |
/// The value type of the edge weights |
|
| 2000 | 2098 |
typedef typename WeightMap::Value Value; |
| 2001 | 2099 |
|
| 2002 | 2100 |
/// \brief Scaling factor for dual solution |
| 2003 | 2101 |
/// |
| 2004 | 2102 |
/// Scaling factor for dual solution, it is equal to 4 or 1 |
| 2005 | 2103 |
/// according to the value type. |
| 2006 | 2104 |
static const int dualScale = |
| 2007 | 2105 |
std::numeric_limits<Value>::is_integer ? 4 : 1; |
| 2008 | 2106 |
|
| 2107 |
/// The type of the matching map |
|
| 2009 | 2108 |
typedef typename Graph::template NodeMap<typename Graph::Arc> |
| 2010 | 2109 |
MatchingMap; |
| 2011 | 2110 |
|
| 2012 | 2111 |
private: |
| 2013 | 2112 |
|
| 2014 | 2113 |
TEMPLATE_GRAPH_TYPEDEFS(Graph); |
| 2015 | 2114 |
|
| 2016 | 2115 |
typedef typename Graph::template NodeMap<Value> NodePotential; |
| 2017 | 2116 |
typedef std::vector<Node> BlossomNodeList; |
| 2018 | 2117 |
|
| 2019 | 2118 |
struct BlossomVariable {
|
| 2020 | 2119 |
int begin, end; |
| 2021 | 2120 |
Value value; |
| 2022 | 2121 |
|
| 2023 | 2122 |
BlossomVariable(int _begin, int _end, Value _value) |
| 2024 | 2123 |
: begin(_begin), end(_end), value(_value) {}
|
| 2025 | 2124 |
|
| 2026 | 2125 |
}; |
| 2027 | 2126 |
|
| 2028 | 2127 |
typedef std::vector<BlossomVariable> BlossomPotential; |
| 2029 | 2128 |
|
| 2030 | 2129 |
const Graph& _graph; |
| 2031 | 2130 |
const WeightMap& _weight; |
| 2032 | 2131 |
|
| 2033 | 2132 |
MatchingMap* _matching; |
| 2034 | 2133 |
|
| 2035 | 2134 |
NodePotential* _node_potential; |
| 2036 | 2135 |
|
| 2037 | 2136 |
BlossomPotential _blossom_potential; |
| 2038 | 2137 |
BlossomNodeList _blossom_node_list; |
| 2039 | 2138 |
|
| 2040 | 2139 |
int _node_num; |
| 2041 | 2140 |
int _blossom_num; |
| 2042 | 2141 |
|
| 2043 | 2142 |
typedef RangeMap<int> IntIntMap; |
| 2044 | 2143 |
|
| 2045 | 2144 |
enum Status {
|
| 2046 | 2145 |
EVEN = -1, MATCHED = 0, ODD = 1 |
| 2047 | 2146 |
}; |
| 2048 | 2147 |
|
| 2049 | 2148 |
typedef HeapUnionFind<Value, IntNodeMap> BlossomSet; |
| 2050 | 2149 |
struct BlossomData {
|
| 2051 | 2150 |
int tree; |
| 2052 | 2151 |
Status status; |
| 2053 | 2152 |
Arc pred, next; |
| 2054 | 2153 |
Value pot, offset; |
| 2055 | 2154 |
}; |
| 2056 | 2155 |
|
| 2057 | 2156 |
IntNodeMap *_blossom_index; |
| 2058 | 2157 |
BlossomSet *_blossom_set; |
| 2059 | 2158 |
RangeMap<BlossomData>* _blossom_data; |
| 2060 | 2159 |
|
| 2061 | 2160 |
IntNodeMap *_node_index; |
| 2062 | 2161 |
IntArcMap *_node_heap_index; |
| 2063 | 2162 |
|
| 2064 | 2163 |
struct NodeData {
|
| 2065 | 2164 |
|
| 2066 | 2165 |
NodeData(IntArcMap& node_heap_index) |
| 2067 | 2166 |
: heap(node_heap_index) {}
|
| 2068 | 2167 |
|
| 2069 | 2168 |
int blossom; |
| 2070 | 2169 |
Value pot; |
| 2071 | 2170 |
BinHeap<Value, IntArcMap> heap; |
| 2072 | 2171 |
std::map<int, Arc> heap_index; |
| 2073 | 2172 |
|
| 2074 | 2173 |
int tree; |
| 2075 | 2174 |
}; |
| 2076 | 2175 |
|
| 2077 | 2176 |
RangeMap<NodeData>* _node_data; |
| 2078 | 2177 |
|
| 2079 | 2178 |
typedef ExtendFindEnum<IntIntMap> TreeSet; |
| 2080 | 2179 |
|
| 2081 | 2180 |
IntIntMap *_tree_set_index; |
| 2082 | 2181 |
TreeSet *_tree_set; |
| 2083 | 2182 |
|
| 2084 | 2183 |
IntIntMap *_delta2_index; |
| 2085 | 2184 |
BinHeap<Value, IntIntMap> *_delta2; |
| 2086 | 2185 |
|
| 2087 | 2186 |
IntEdgeMap *_delta3_index; |
| 2088 | 2187 |
BinHeap<Value, IntEdgeMap> *_delta3; |
| 2089 | 2188 |
|
| 2090 | 2189 |
IntIntMap *_delta4_index; |
| 2091 | 2190 |
BinHeap<Value, IntIntMap> *_delta4; |
| 2092 | 2191 |
|
| 2093 | 2192 |
Value _delta_sum; |
| 2094 | 2193 |
|
| 2095 | 2194 |
void createStructures() {
|
| 2096 | 2195 |
_node_num = countNodes(_graph); |
| 2097 | 2196 |
_blossom_num = _node_num * 3 / 2; |
| 2098 | 2197 |
|
| 2099 | 2198 |
if (!_matching) {
|
| 2100 | 2199 |
_matching = new MatchingMap(_graph); |
| 2101 | 2200 |
} |
| 2102 | 2201 |
if (!_node_potential) {
|
| 2103 | 2202 |
_node_potential = new NodePotential(_graph); |
| 2104 | 2203 |
} |
| 2105 | 2204 |
if (!_blossom_set) {
|
| 2106 | 2205 |
_blossom_index = new IntNodeMap(_graph); |
| 2107 | 2206 |
_blossom_set = new BlossomSet(*_blossom_index); |
| 2108 | 2207 |
_blossom_data = new RangeMap<BlossomData>(_blossom_num); |
| 2109 | 2208 |
} |
| 2110 | 2209 |
|
| 2111 | 2210 |
if (!_node_index) {
|
| 2112 | 2211 |
_node_index = new IntNodeMap(_graph); |
| 2113 | 2212 |
_node_heap_index = new IntArcMap(_graph); |
| 2114 | 2213 |
_node_data = new RangeMap<NodeData>(_node_num, |
| 2115 | 2214 |
NodeData(*_node_heap_index)); |
| 2116 | 2215 |
} |
| 2117 | 2216 |
|
| 2118 | 2217 |
if (!_tree_set) {
|
| 2119 | 2218 |
_tree_set_index = new IntIntMap(_blossom_num); |
| 2120 | 2219 |
_tree_set = new TreeSet(*_tree_set_index); |
| 2121 | 2220 |
} |
| 2122 | 2221 |
if (!_delta2) {
|
| 2123 | 2222 |
_delta2_index = new IntIntMap(_blossom_num); |
| 2124 | 2223 |
_delta2 = new BinHeap<Value, IntIntMap>(*_delta2_index); |
| 2125 | 2224 |
} |
| 2126 | 2225 |
if (!_delta3) {
|
| 2127 | 2226 |
_delta3_index = new IntEdgeMap(_graph); |
| 2128 | 2227 |
_delta3 = new BinHeap<Value, IntEdgeMap>(*_delta3_index); |
| 2129 | 2228 |
} |
| 2130 | 2229 |
if (!_delta4) {
|
| 2131 | 2230 |
_delta4_index = new IntIntMap(_blossom_num); |
| 2132 | 2231 |
_delta4 = new BinHeap<Value, IntIntMap>(*_delta4_index); |
| 2133 | 2232 |
} |
| 2134 | 2233 |
} |
| 2135 | 2234 |
|
| 2136 | 2235 |
void destroyStructures() {
|
| 2137 | 2236 |
_node_num = countNodes(_graph); |
| 2138 | 2237 |
_blossom_num = _node_num * 3 / 2; |
| 2139 | 2238 |
|
| 2140 | 2239 |
if (_matching) {
|
| 2141 | 2240 |
delete _matching; |
| 2142 | 2241 |
} |
| 2143 | 2242 |
if (_node_potential) {
|
| 2144 | 2243 |
delete _node_potential; |
| 2145 | 2244 |
} |
| 2146 | 2245 |
if (_blossom_set) {
|
| 2147 | 2246 |
delete _blossom_index; |
| 2148 | 2247 |
delete _blossom_set; |
| 2149 | 2248 |
delete _blossom_data; |
| 2150 | 2249 |
} |
| 2151 | 2250 |
|
| 2152 | 2251 |
if (_node_index) {
|
| 2153 | 2252 |
delete _node_index; |
| 2154 | 2253 |
delete _node_heap_index; |
| 2155 | 2254 |
delete _node_data; |
| 2156 | 2255 |
} |
| 2157 | 2256 |
|
| 2158 | 2257 |
if (_tree_set) {
|
| 2159 | 2258 |
delete _tree_set_index; |
| 2160 | 2259 |
delete _tree_set; |
| 2161 | 2260 |
} |
| 2162 | 2261 |
if (_delta2) {
|
| 2163 | 2262 |
delete _delta2_index; |
| 2164 | 2263 |
delete _delta2; |
| 2165 | 2264 |
} |
| 2166 | 2265 |
if (_delta3) {
|
| 2167 | 2266 |
delete _delta3_index; |
| 2168 | 2267 |
delete _delta3; |
| 2169 | 2268 |
} |
| 2170 | 2269 |
if (_delta4) {
|
| 2171 | 2270 |
delete _delta4_index; |
| 2172 | 2271 |
delete _delta4; |
| 2173 | 2272 |
} |
| 2174 | 2273 |
} |
| 2175 | 2274 |
|
| 2176 | 2275 |
void matchedToEven(int blossom, int tree) {
|
| 2177 | 2276 |
if (_delta2->state(blossom) == _delta2->IN_HEAP) {
|
| 2178 | 2277 |
_delta2->erase(blossom); |
| 2179 | 2278 |
} |
| 2180 | 2279 |
|
| 2181 | 2280 |
if (!_blossom_set->trivial(blossom)) {
|
| 2182 | 2281 |
(*_blossom_data)[blossom].pot -= |
| 2183 | 2282 |
2 * (_delta_sum - (*_blossom_data)[blossom].offset); |
| 2184 | 2283 |
} |
| 2185 | 2284 |
|
| 2186 | 2285 |
for (typename BlossomSet::ItemIt n(*_blossom_set, blossom); |
| 2187 | 2286 |
n != INVALID; ++n) {
|
| 2188 | 2287 |
|
| 2189 | 2288 |
_blossom_set->increase(n, std::numeric_limits<Value>::max()); |
| 2190 | 2289 |
int ni = (*_node_index)[n]; |
| 2191 | 2290 |
|
| 2192 | 2291 |
(*_node_data)[ni].heap.clear(); |
| 2193 | 2292 |
(*_node_data)[ni].heap_index.clear(); |
| 2194 | 2293 |
|
| 2195 | 2294 |
(*_node_data)[ni].pot += _delta_sum - (*_blossom_data)[blossom].offset; |
| 2196 | 2295 |
|
| 2197 | 2296 |
for (InArcIt e(_graph, n); e != INVALID; ++e) {
|
| 2198 | 2297 |
Node v = _graph.source(e); |
| 2199 | 2298 |
int vb = _blossom_set->find(v); |
| 2200 | 2299 |
int vi = (*_node_index)[v]; |
| 2201 | 2300 |
|
| 2202 | 2301 |
Value rw = (*_node_data)[ni].pot + (*_node_data)[vi].pot - |
| 2203 | 2302 |
dualScale * _weight[e]; |
| 2204 | 2303 |
|
| 2205 | 2304 |
if ((*_blossom_data)[vb].status == EVEN) {
|
| 2206 | 2305 |
if (_delta3->state(e) != _delta3->IN_HEAP && blossom != vb) {
|
| 2207 | 2306 |
_delta3->push(e, rw / 2); |
| 2208 | 2307 |
} |
| 2209 | 2308 |
} else {
|
| 2210 | 2309 |
typename std::map<int, Arc>::iterator it = |
| 2211 | 2310 |
(*_node_data)[vi].heap_index.find(tree); |
| 2212 | 2311 |
|
| 2213 | 2312 |
if (it != (*_node_data)[vi].heap_index.end()) {
|
| 2214 | 2313 |
if ((*_node_data)[vi].heap[it->second] > rw) {
|
| 2215 | 2314 |
(*_node_data)[vi].heap.replace(it->second, e); |
| 2216 | 2315 |
(*_node_data)[vi].heap.decrease(e, rw); |
| 2217 | 2316 |
it->second = e; |
| 2218 | 2317 |
} |
| 2219 | 2318 |
} else {
|
| 2220 | 2319 |
(*_node_data)[vi].heap.push(e, rw); |
| 2221 | 2320 |
(*_node_data)[vi].heap_index.insert(std::make_pair(tree, e)); |
| 2222 | 2321 |
} |
| 2223 | 2322 |
|
| 2224 | 2323 |
if ((*_blossom_set)[v] > (*_node_data)[vi].heap.prio()) {
|
| 2225 | 2324 |
_blossom_set->decrease(v, (*_node_data)[vi].heap.prio()); |
| 2226 | 2325 |
|
| 2227 | 2326 |
if ((*_blossom_data)[vb].status == MATCHED) {
|
| 2228 | 2327 |
if (_delta2->state(vb) != _delta2->IN_HEAP) {
|
| 2229 | 2328 |
_delta2->push(vb, _blossom_set->classPrio(vb) - |
| 2230 | 2329 |
(*_blossom_data)[vb].offset); |
| 2231 | 2330 |
} else if ((*_delta2)[vb] > _blossom_set->classPrio(vb) - |
| 2232 | 2331 |
(*_blossom_data)[vb].offset){
|
| 2233 | 2332 |
_delta2->decrease(vb, _blossom_set->classPrio(vb) - |
| 2234 | 2333 |
(*_blossom_data)[vb].offset); |
| 2235 | 2334 |
} |
| 2236 | 2335 |
} |
| 2237 | 2336 |
} |
| 2238 | 2337 |
} |
| 2239 | 2338 |
} |
| 2240 | 2339 |
} |
| 2241 | 2340 |
(*_blossom_data)[blossom].offset = 0; |
| 2242 | 2341 |
} |
| 2243 | 2342 |
|
| 2244 | 2343 |
void matchedToOdd(int blossom) {
|
| 2245 | 2344 |
if (_delta2->state(blossom) == _delta2->IN_HEAP) {
|
| 2246 | 2345 |
_delta2->erase(blossom); |
| 2247 | 2346 |
} |
| 2248 | 2347 |
(*_blossom_data)[blossom].offset += _delta_sum; |
| 2249 | 2348 |
if (!_blossom_set->trivial(blossom)) {
|
| 2250 | 2349 |
_delta4->push(blossom, (*_blossom_data)[blossom].pot / 2 + |
| 2251 | 2350 |
(*_blossom_data)[blossom].offset); |
| 2252 | 2351 |
} |
| 2253 | 2352 |
} |
| 2254 | 2353 |
|
| 2255 | 2354 |
void evenToMatched(int blossom, int tree) {
|
| 2256 | 2355 |
if (!_blossom_set->trivial(blossom)) {
|
| 2257 | 2356 |
(*_blossom_data)[blossom].pot += 2 * _delta_sum; |
| 2258 | 2357 |
} |
| 2259 | 2358 |
|
| 2260 | 2359 |
for (typename BlossomSet::ItemIt n(*_blossom_set, blossom); |
| 2261 | 2360 |
n != INVALID; ++n) {
|
| 2262 | 2361 |
int ni = (*_node_index)[n]; |
| 2263 | 2362 |
(*_node_data)[ni].pot -= _delta_sum; |
| 2264 | 2363 |
|
| 2265 | 2364 |
for (InArcIt e(_graph, n); e != INVALID; ++e) {
|
| 2266 | 2365 |
Node v = _graph.source(e); |
| 2267 | 2366 |
int vb = _blossom_set->find(v); |
| 2268 | 2367 |
int vi = (*_node_index)[v]; |
| 2269 | 2368 |
|
| 2270 | 2369 |
Value rw = (*_node_data)[ni].pot + (*_node_data)[vi].pot - |
| 2271 | 2370 |
dualScale * _weight[e]; |
| 2272 | 2371 |
|
| 2273 | 2372 |
if (vb == blossom) {
|
| 2274 | 2373 |
if (_delta3->state(e) == _delta3->IN_HEAP) {
|
| 2275 | 2374 |
_delta3->erase(e); |
| 2276 | 2375 |
} |
| 2277 | 2376 |
} else if ((*_blossom_data)[vb].status == EVEN) {
|
| 2278 | 2377 |
|
| 2279 | 2378 |
if (_delta3->state(e) == _delta3->IN_HEAP) {
|
| 2280 | 2379 |
_delta3->erase(e); |
| 2281 | 2380 |
} |
| 2282 | 2381 |
|
| 2283 | 2382 |
int vt = _tree_set->find(vb); |
| 2284 | 2383 |
|
| 2285 | 2384 |
if (vt != tree) {
|
| 2286 | 2385 |
|
| 2287 | 2386 |
Arc r = _graph.oppositeArc(e); |
| 2288 | 2387 |
|
| 2289 | 2388 |
typename std::map<int, Arc>::iterator it = |
| 2290 | 2389 |
(*_node_data)[ni].heap_index.find(vt); |
| 2291 | 2390 |
|
| 2292 | 2391 |
if (it != (*_node_data)[ni].heap_index.end()) {
|
| 2293 | 2392 |
if ((*_node_data)[ni].heap[it->second] > rw) {
|
| 2294 | 2393 |
(*_node_data)[ni].heap.replace(it->second, r); |
| 2295 | 2394 |
(*_node_data)[ni].heap.decrease(r, rw); |
| 2296 | 2395 |
it->second = r; |
| 2297 | 2396 |
} |
| 2298 | 2397 |
} else {
|
| 2299 | 2398 |
(*_node_data)[ni].heap.push(r, rw); |
| 2300 | 2399 |
(*_node_data)[ni].heap_index.insert(std::make_pair(vt, r)); |
| 2301 | 2400 |
} |
| 2302 | 2401 |
|
| 2303 | 2402 |
if ((*_blossom_set)[n] > (*_node_data)[ni].heap.prio()) {
|
| 2304 | 2403 |
_blossom_set->decrease(n, (*_node_data)[ni].heap.prio()); |
| 2305 | 2404 |
|
| 2306 | 2405 |
if (_delta2->state(blossom) != _delta2->IN_HEAP) {
|
| 2307 | 2406 |
_delta2->push(blossom, _blossom_set->classPrio(blossom) - |
| 2308 | 2407 |
(*_blossom_data)[blossom].offset); |
| 2309 | 2408 |
} else if ((*_delta2)[blossom] > |
| 2310 | 2409 |
_blossom_set->classPrio(blossom) - |
| 2311 | 2410 |
(*_blossom_data)[blossom].offset){
|
| 2312 | 2411 |
_delta2->decrease(blossom, _blossom_set->classPrio(blossom) - |
| 2313 | 2412 |
(*_blossom_data)[blossom].offset); |
| 2314 | 2413 |
} |
| 2315 | 2414 |
} |
| 2316 | 2415 |
} |
| 2317 | 2416 |
} else {
|
| 2318 | 2417 |
|
| 2319 | 2418 |
typename std::map<int, Arc>::iterator it = |
| 2320 | 2419 |
(*_node_data)[vi].heap_index.find(tree); |
| 2321 | 2420 |
|
| 2322 | 2421 |
if (it != (*_node_data)[vi].heap_index.end()) {
|
| 2323 | 2422 |
(*_node_data)[vi].heap.erase(it->second); |
| 2324 | 2423 |
(*_node_data)[vi].heap_index.erase(it); |
| 2325 | 2424 |
if ((*_node_data)[vi].heap.empty()) {
|
| 2326 | 2425 |
_blossom_set->increase(v, std::numeric_limits<Value>::max()); |
| 2327 | 2426 |
} else if ((*_blossom_set)[v] < (*_node_data)[vi].heap.prio()) {
|
| 2328 | 2427 |
_blossom_set->increase(v, (*_node_data)[vi].heap.prio()); |
| 2329 | 2428 |
} |
| 2330 | 2429 |
|
| 2331 | 2430 |
if ((*_blossom_data)[vb].status == MATCHED) {
|
| 2332 | 2431 |
if (_blossom_set->classPrio(vb) == |
| 2333 | 2432 |
std::numeric_limits<Value>::max()) {
|
| 2334 | 2433 |
_delta2->erase(vb); |
| 2335 | 2434 |
} else if ((*_delta2)[vb] < _blossom_set->classPrio(vb) - |
| 2336 | 2435 |
(*_blossom_data)[vb].offset) {
|
| 2337 | 2436 |
_delta2->increase(vb, _blossom_set->classPrio(vb) - |
| 2338 | 2437 |
(*_blossom_data)[vb].offset); |
| 2339 | 2438 |
} |
| 2340 | 2439 |
} |
| 2341 | 2440 |
} |
| 2342 | 2441 |
} |
| 2343 | 2442 |
} |
| 2344 | 2443 |
} |
| 2345 | 2444 |
} |
| 2346 | 2445 |
|
| 2347 | 2446 |
void oddToMatched(int blossom) {
|
| 2348 | 2447 |
(*_blossom_data)[blossom].offset -= _delta_sum; |
| 2349 | 2448 |
|
| 2350 | 2449 |
if (_blossom_set->classPrio(blossom) != |
| 2351 | 2450 |
std::numeric_limits<Value>::max()) {
|
| 2352 | 2451 |
_delta2->push(blossom, _blossom_set->classPrio(blossom) - |
| 2353 | 2452 |
(*_blossom_data)[blossom].offset); |
| 2354 | 2453 |
} |
| 2355 | 2454 |
|
| 2356 | 2455 |
if (!_blossom_set->trivial(blossom)) {
|
| 2357 | 2456 |
_delta4->erase(blossom); |
| 2358 | 2457 |
} |
| 2359 | 2458 |
} |
| 2360 | 2459 |
|
| 2361 | 2460 |
void oddToEven(int blossom, int tree) {
|
| 2362 | 2461 |
if (!_blossom_set->trivial(blossom)) {
|
| 2363 | 2462 |
_delta4->erase(blossom); |
| 2364 | 2463 |
(*_blossom_data)[blossom].pot -= |
| 2365 | 2464 |
2 * (2 * _delta_sum - (*_blossom_data)[blossom].offset); |
| 2366 | 2465 |
} |
| 2367 | 2466 |
|
| 2368 | 2467 |
for (typename BlossomSet::ItemIt n(*_blossom_set, blossom); |
| 2369 | 2468 |
n != INVALID; ++n) {
|
| 2370 | 2469 |
int ni = (*_node_index)[n]; |
| 2371 | 2470 |
|
| 2372 | 2471 |
_blossom_set->increase(n, std::numeric_limits<Value>::max()); |
| 2373 | 2472 |
|
| 2374 | 2473 |
(*_node_data)[ni].heap.clear(); |
| 2375 | 2474 |
(*_node_data)[ni].heap_index.clear(); |
| 2376 | 2475 |
(*_node_data)[ni].pot += |
| 2377 | 2476 |
2 * _delta_sum - (*_blossom_data)[blossom].offset; |
| 2378 | 2477 |
|
| 2379 | 2478 |
for (InArcIt e(_graph, n); e != INVALID; ++e) {
|
| 2380 | 2479 |
Node v = _graph.source(e); |
| 2381 | 2480 |
int vb = _blossom_set->find(v); |
| 2382 | 2481 |
int vi = (*_node_index)[v]; |
| 2383 | 2482 |
|
| 2384 | 2483 |
Value rw = (*_node_data)[ni].pot + (*_node_data)[vi].pot - |
| 2385 | 2484 |
dualScale * _weight[e]; |
| 2386 | 2485 |
|
| 2387 | 2486 |
if ((*_blossom_data)[vb].status == EVEN) {
|
| 2388 | 2487 |
if (_delta3->state(e) != _delta3->IN_HEAP && blossom != vb) {
|
| 2389 | 2488 |
_delta3->push(e, rw / 2); |
| 2390 | 2489 |
} |
| 2391 | 2490 |
} else {
|
| 2392 | 2491 |
|
| 2393 | 2492 |
typename std::map<int, Arc>::iterator it = |
| 2394 | 2493 |
(*_node_data)[vi].heap_index.find(tree); |
| 2395 | 2494 |
|
| 2396 | 2495 |
if (it != (*_node_data)[vi].heap_index.end()) {
|
| 2397 | 2496 |
if ((*_node_data)[vi].heap[it->second] > rw) {
|
| 2398 | 2497 |
(*_node_data)[vi].heap.replace(it->second, e); |
| 2399 | 2498 |
(*_node_data)[vi].heap.decrease(e, rw); |
| 2400 | 2499 |
it->second = e; |
| 2401 | 2500 |
} |
| 2402 | 2501 |
} else {
|
| 2403 | 2502 |
(*_node_data)[vi].heap.push(e, rw); |
| 2404 | 2503 |
(*_node_data)[vi].heap_index.insert(std::make_pair(tree, e)); |
| 2405 | 2504 |
} |
| 2406 | 2505 |
|
| 2407 | 2506 |
if ((*_blossom_set)[v] > (*_node_data)[vi].heap.prio()) {
|
| 2408 | 2507 |
_blossom_set->decrease(v, (*_node_data)[vi].heap.prio()); |
| 2409 | 2508 |
|
| 2410 | 2509 |
if ((*_blossom_data)[vb].status == MATCHED) {
|
| 2411 | 2510 |
if (_delta2->state(vb) != _delta2->IN_HEAP) {
|
| 2412 | 2511 |
_delta2->push(vb, _blossom_set->classPrio(vb) - |
| 2413 | 2512 |
(*_blossom_data)[vb].offset); |
| 2414 | 2513 |
} else if ((*_delta2)[vb] > _blossom_set->classPrio(vb) - |
| 2415 | 2514 |
(*_blossom_data)[vb].offset) {
|
| 2416 | 2515 |
_delta2->decrease(vb, _blossom_set->classPrio(vb) - |
| 2417 | 2516 |
(*_blossom_data)[vb].offset); |
| 2418 | 2517 |
} |
| 2419 | 2518 |
} |
| 2420 | 2519 |
} |
| 2421 | 2520 |
} |
| 2422 | 2521 |
} |
| 2423 | 2522 |
} |
| 2424 | 2523 |
(*_blossom_data)[blossom].offset = 0; |
| 2425 | 2524 |
} |
| 2426 | 2525 |
|
| 2427 | 2526 |
void alternatePath(int even, int tree) {
|
| 2428 | 2527 |
int odd; |
| 2429 | 2528 |
|
| 2430 | 2529 |
evenToMatched(even, tree); |
| 2431 | 2530 |
(*_blossom_data)[even].status = MATCHED; |
| 2432 | 2531 |
|
| 2433 | 2532 |
while ((*_blossom_data)[even].pred != INVALID) {
|
| 2434 | 2533 |
odd = _blossom_set->find(_graph.target((*_blossom_data)[even].pred)); |
| 2435 | 2534 |
(*_blossom_data)[odd].status = MATCHED; |
| 2436 | 2535 |
oddToMatched(odd); |
| 2437 | 2536 |
(*_blossom_data)[odd].next = (*_blossom_data)[odd].pred; |
| 2438 | 2537 |
|
| 2439 | 2538 |
even = _blossom_set->find(_graph.target((*_blossom_data)[odd].pred)); |
| 2440 | 2539 |
(*_blossom_data)[even].status = MATCHED; |
| 2441 | 2540 |
evenToMatched(even, tree); |
| 2442 | 2541 |
(*_blossom_data)[even].next = |
| 2443 | 2542 |
_graph.oppositeArc((*_blossom_data)[odd].pred); |
| 2444 | 2543 |
} |
| 2445 | 2544 |
|
| 2446 | 2545 |
} |
| 2447 | 2546 |
|
| 2448 | 2547 |
void destroyTree(int tree) {
|
| 2449 | 2548 |
for (TreeSet::ItemIt b(*_tree_set, tree); b != INVALID; ++b) {
|
| 2450 | 2549 |
if ((*_blossom_data)[b].status == EVEN) {
|
| 2451 | 2550 |
(*_blossom_data)[b].status = MATCHED; |
| 2452 | 2551 |
evenToMatched(b, tree); |
| 2453 | 2552 |
} else if ((*_blossom_data)[b].status == ODD) {
|
| 2454 | 2553 |
(*_blossom_data)[b].status = MATCHED; |
| 2455 | 2554 |
oddToMatched(b); |
| 2456 | 2555 |
} |
| 2457 | 2556 |
} |
| 2458 | 2557 |
_tree_set->eraseClass(tree); |
| 2459 | 2558 |
} |
| 2460 | 2559 |
|
| 2461 | 2560 |
void augmentOnEdge(const Edge& edge) {
|
| 2462 | 2561 |
|
| 2463 | 2562 |
int left = _blossom_set->find(_graph.u(edge)); |
| 2464 | 2563 |
int right = _blossom_set->find(_graph.v(edge)); |
| 2465 | 2564 |
|
| 2466 | 2565 |
int left_tree = _tree_set->find(left); |
| 2467 | 2566 |
alternatePath(left, left_tree); |
| 2468 | 2567 |
destroyTree(left_tree); |
| 2469 | 2568 |
|
| 2470 | 2569 |
int right_tree = _tree_set->find(right); |
| 2471 | 2570 |
alternatePath(right, right_tree); |
| 2472 | 2571 |
destroyTree(right_tree); |
| 2473 | 2572 |
|
| 2474 | 2573 |
(*_blossom_data)[left].next = _graph.direct(edge, true); |
| 2475 | 2574 |
(*_blossom_data)[right].next = _graph.direct(edge, false); |
| 2476 | 2575 |
} |
| 2477 | 2576 |
|
| 2478 | 2577 |
void extendOnArc(const Arc& arc) {
|
| 2479 | 2578 |
int base = _blossom_set->find(_graph.target(arc)); |
| 2480 | 2579 |
int tree = _tree_set->find(base); |
| 2481 | 2580 |
|
| 2482 | 2581 |
int odd = _blossom_set->find(_graph.source(arc)); |
| 2483 | 2582 |
_tree_set->insert(odd, tree); |
| 2484 | 2583 |
(*_blossom_data)[odd].status = ODD; |
| 2485 | 2584 |
matchedToOdd(odd); |
| 2486 | 2585 |
(*_blossom_data)[odd].pred = arc; |
| 2487 | 2586 |
|
| 2488 | 2587 |
int even = _blossom_set->find(_graph.target((*_blossom_data)[odd].next)); |
| 2489 | 2588 |
(*_blossom_data)[even].pred = (*_blossom_data)[even].next; |
| 2490 | 2589 |
_tree_set->insert(even, tree); |
| 2491 | 2590 |
(*_blossom_data)[even].status = EVEN; |
| 2492 | 2591 |
matchedToEven(even, tree); |
| 2493 | 2592 |
} |
| 2494 | 2593 |
|
| 2495 | 2594 |
void shrinkOnEdge(const Edge& edge, int tree) {
|
| 2496 | 2595 |
int nca = -1; |
| 2497 | 2596 |
std::vector<int> left_path, right_path; |
| 2498 | 2597 |
|
| 2499 | 2598 |
{
|
| 2500 | 2599 |
std::set<int> left_set, right_set; |
| 2501 | 2600 |
int left = _blossom_set->find(_graph.u(edge)); |
| 2502 | 2601 |
left_path.push_back(left); |
| 2503 | 2602 |
left_set.insert(left); |
| 2504 | 2603 |
|
| 2505 | 2604 |
int right = _blossom_set->find(_graph.v(edge)); |
| 2506 | 2605 |
right_path.push_back(right); |
| 2507 | 2606 |
right_set.insert(right); |
| 2508 | 2607 |
|
| 2509 | 2608 |
while (true) {
|
| 2510 | 2609 |
|
| 2511 | 2610 |
if ((*_blossom_data)[left].pred == INVALID) break; |
| 2512 | 2611 |
|
| 2513 | 2612 |
left = |
| 2514 | 2613 |
_blossom_set->find(_graph.target((*_blossom_data)[left].pred)); |
| 2515 | 2614 |
left_path.push_back(left); |
| 2516 | 2615 |
left = |
| 2517 | 2616 |
_blossom_set->find(_graph.target((*_blossom_data)[left].pred)); |
| 2518 | 2617 |
left_path.push_back(left); |
| 2519 | 2618 |
|
| 2520 | 2619 |
left_set.insert(left); |
| 2521 | 2620 |
|
| 2522 | 2621 |
if (right_set.find(left) != right_set.end()) {
|
| 2523 | 2622 |
nca = left; |
| 2524 | 2623 |
break; |
| 2525 | 2624 |
} |
| 2526 | 2625 |
|
| 2527 | 2626 |
if ((*_blossom_data)[right].pred == INVALID) break; |
| 2528 | 2627 |
|
| 2529 | 2628 |
right = |
| 2530 | 2629 |
_blossom_set->find(_graph.target((*_blossom_data)[right].pred)); |
| 2531 | 2630 |
right_path.push_back(right); |
| 2532 | 2631 |
right = |
| 2533 | 2632 |
_blossom_set->find(_graph.target((*_blossom_data)[right].pred)); |
| 2534 | 2633 |
right_path.push_back(right); |
| 2535 | 2634 |
|
| 2536 | 2635 |
right_set.insert(right); |
| 2537 | 2636 |
|
| 2538 | 2637 |
if (left_set.find(right) != left_set.end()) {
|
| 2539 | 2638 |
nca = right; |
| 2540 | 2639 |
break; |
| 2541 | 2640 |
} |
| 2542 | 2641 |
|
| 2543 | 2642 |
} |
| 2544 | 2643 |
|
| 2545 | 2644 |
if (nca == -1) {
|
| 2546 | 2645 |
if ((*_blossom_data)[left].pred == INVALID) {
|
| 2547 | 2646 |
nca = right; |
| 2548 | 2647 |
while (left_set.find(nca) == left_set.end()) {
|
| 2549 | 2648 |
nca = |
| 2550 | 2649 |
_blossom_set->find(_graph.target((*_blossom_data)[nca].pred)); |
| 2551 | 2650 |
right_path.push_back(nca); |
| 2552 | 2651 |
nca = |
| 2553 | 2652 |
_blossom_set->find(_graph.target((*_blossom_data)[nca].pred)); |
| 2554 | 2653 |
right_path.push_back(nca); |
| 2555 | 2654 |
} |
| 2556 | 2655 |
} else {
|
| 2557 | 2656 |
nca = left; |
| 2558 | 2657 |
while (right_set.find(nca) == right_set.end()) {
|
| 2559 | 2658 |
nca = |
| 2560 | 2659 |
_blossom_set->find(_graph.target((*_blossom_data)[nca].pred)); |
| 2561 | 2660 |
left_path.push_back(nca); |
| 2562 | 2661 |
nca = |
| 2563 | 2662 |
_blossom_set->find(_graph.target((*_blossom_data)[nca].pred)); |
| 2564 | 2663 |
left_path.push_back(nca); |
| 2565 | 2664 |
} |
| 2566 | 2665 |
} |
| 2567 | 2666 |
} |
| 2568 | 2667 |
} |
| 2569 | 2668 |
|
| 2570 | 2669 |
std::vector<int> subblossoms; |
| 2571 | 2670 |
Arc prev; |
| 2572 | 2671 |
|
| 2573 | 2672 |
prev = _graph.direct(edge, true); |
| 2574 | 2673 |
for (int i = 0; left_path[i] != nca; i += 2) {
|
| 2575 | 2674 |
subblossoms.push_back(left_path[i]); |
| 2576 | 2675 |
(*_blossom_data)[left_path[i]].next = prev; |
| 2577 | 2676 |
_tree_set->erase(left_path[i]); |
| 2578 | 2677 |
|
| 2579 | 2678 |
subblossoms.push_back(left_path[i + 1]); |
| 2580 | 2679 |
(*_blossom_data)[left_path[i + 1]].status = EVEN; |
| 2581 | 2680 |
oddToEven(left_path[i + 1], tree); |
| 2582 | 2681 |
_tree_set->erase(left_path[i + 1]); |
| 2583 | 2682 |
prev = _graph.oppositeArc((*_blossom_data)[left_path[i + 1]].pred); |
| 2584 | 2683 |
} |
| 2585 | 2684 |
|
| 2586 | 2685 |
int k = 0; |
| 2587 | 2686 |
while (right_path[k] != nca) ++k; |
| 2588 | 2687 |
|
| 2589 | 2688 |
subblossoms.push_back(nca); |
| 2590 | 2689 |
(*_blossom_data)[nca].next = prev; |
| 2591 | 2690 |
|
| 2592 | 2691 |
for (int i = k - 2; i >= 0; i -= 2) {
|
| 2593 | 2692 |
subblossoms.push_back(right_path[i + 1]); |
| 2594 | 2693 |
(*_blossom_data)[right_path[i + 1]].status = EVEN; |
| 2595 | 2694 |
oddToEven(right_path[i + 1], tree); |
| 2596 | 2695 |
_tree_set->erase(right_path[i + 1]); |
| 2597 | 2696 |
|
| 2598 | 2697 |
(*_blossom_data)[right_path[i + 1]].next = |
| 2599 | 2698 |
(*_blossom_data)[right_path[i + 1]].pred; |
| 2600 | 2699 |
|
| 2601 | 2700 |
subblossoms.push_back(right_path[i]); |
| 2602 | 2701 |
_tree_set->erase(right_path[i]); |
| 2603 | 2702 |
} |
| 2604 | 2703 |
|
| 2605 | 2704 |
int surface = |
| 2606 | 2705 |
_blossom_set->join(subblossoms.begin(), subblossoms.end()); |
| 2607 | 2706 |
|
| 2608 | 2707 |
for (int i = 0; i < int(subblossoms.size()); ++i) {
|
| 2609 | 2708 |
if (!_blossom_set->trivial(subblossoms[i])) {
|
| 2610 | 2709 |
(*_blossom_data)[subblossoms[i]].pot += 2 * _delta_sum; |
| 2611 | 2710 |
} |
| 2612 | 2711 |
(*_blossom_data)[subblossoms[i]].status = MATCHED; |
| 2613 | 2712 |
} |
| 2614 | 2713 |
|
| 2615 | 2714 |
(*_blossom_data)[surface].pot = -2 * _delta_sum; |
| 2616 | 2715 |
(*_blossom_data)[surface].offset = 0; |
| 2617 | 2716 |
(*_blossom_data)[surface].status = EVEN; |
| 2618 | 2717 |
(*_blossom_data)[surface].pred = (*_blossom_data)[nca].pred; |
| 2619 | 2718 |
(*_blossom_data)[surface].next = (*_blossom_data)[nca].pred; |
| 2620 | 2719 |
|
| 2621 | 2720 |
_tree_set->insert(surface, tree); |
| 2622 | 2721 |
_tree_set->erase(nca); |
| 2623 | 2722 |
} |
| 2624 | 2723 |
|
| 2625 | 2724 |
void splitBlossom(int blossom) {
|
| 2626 | 2725 |
Arc next = (*_blossom_data)[blossom].next; |
| 2627 | 2726 |
Arc pred = (*_blossom_data)[blossom].pred; |
| 2628 | 2727 |
|
| 2629 | 2728 |
int tree = _tree_set->find(blossom); |
| 2630 | 2729 |
|
| 2631 | 2730 |
(*_blossom_data)[blossom].status = MATCHED; |
| 2632 | 2731 |
oddToMatched(blossom); |
| 2633 | 2732 |
if (_delta2->state(blossom) == _delta2->IN_HEAP) {
|
| 2634 | 2733 |
_delta2->erase(blossom); |
| 2635 | 2734 |
} |
| 2636 | 2735 |
|
| 2637 | 2736 |
std::vector<int> subblossoms; |
| 2638 | 2737 |
_blossom_set->split(blossom, std::back_inserter(subblossoms)); |
| 2639 | 2738 |
|
| 2640 | 2739 |
Value offset = (*_blossom_data)[blossom].offset; |
| 2641 | 2740 |
int b = _blossom_set->find(_graph.source(pred)); |
| 2642 | 2741 |
int d = _blossom_set->find(_graph.source(next)); |
| 2643 | 2742 |
|
| 2644 | 2743 |
int ib = -1, id = -1; |
| 2645 | 2744 |
for (int i = 0; i < int(subblossoms.size()); ++i) {
|
| 2646 | 2745 |
if (subblossoms[i] == b) ib = i; |
| 2647 | 2746 |
if (subblossoms[i] == d) id = i; |
| 2648 | 2747 |
|
| 2649 | 2748 |
(*_blossom_data)[subblossoms[i]].offset = offset; |
| 2650 | 2749 |
if (!_blossom_set->trivial(subblossoms[i])) {
|
| 2651 | 2750 |
(*_blossom_data)[subblossoms[i]].pot -= 2 * offset; |
| 2652 | 2751 |
} |
| 2653 | 2752 |
if (_blossom_set->classPrio(subblossoms[i]) != |
| 2654 | 2753 |
std::numeric_limits<Value>::max()) {
|
| 2655 | 2754 |
_delta2->push(subblossoms[i], |
| 2656 | 2755 |
_blossom_set->classPrio(subblossoms[i]) - |
| 2657 | 2756 |
(*_blossom_data)[subblossoms[i]].offset); |
| 2658 | 2757 |
} |
| 2659 | 2758 |
} |
| 2660 | 2759 |
|
| 2661 | 2760 |
if (id > ib ? ((id - ib) % 2 == 0) : ((ib - id) % 2 == 1)) {
|
| 2662 | 2761 |
for (int i = (id + 1) % subblossoms.size(); |
| 2663 | 2762 |
i != ib; i = (i + 2) % subblossoms.size()) {
|
| 2664 | 2763 |
int sb = subblossoms[i]; |
| 2665 | 2764 |
int tb = subblossoms[(i + 1) % subblossoms.size()]; |
| 2666 | 2765 |
(*_blossom_data)[sb].next = |
| 2667 | 2766 |
_graph.oppositeArc((*_blossom_data)[tb].next); |
| 2668 | 2767 |
} |
| 2669 | 2768 |
|
| 2670 | 2769 |
for (int i = ib; i != id; i = (i + 2) % subblossoms.size()) {
|
| 2671 | 2770 |
int sb = subblossoms[i]; |
| 2672 | 2771 |
int tb = subblossoms[(i + 1) % subblossoms.size()]; |
| 2673 | 2772 |
int ub = subblossoms[(i + 2) % subblossoms.size()]; |
| 2674 | 2773 |
|
| 2675 | 2774 |
(*_blossom_data)[sb].status = ODD; |
| 2676 | 2775 |
matchedToOdd(sb); |
| 2677 | 2776 |
_tree_set->insert(sb, tree); |
| 2678 | 2777 |
(*_blossom_data)[sb].pred = pred; |
| 2679 | 2778 |
(*_blossom_data)[sb].next = |
| 2680 | 2779 |
_graph.oppositeArc((*_blossom_data)[tb].next); |
| 2681 | 2780 |
|
| 2682 | 2781 |
pred = (*_blossom_data)[ub].next; |
| 2683 | 2782 |
|
| 2684 | 2783 |
(*_blossom_data)[tb].status = EVEN; |
| 2685 | 2784 |
matchedToEven(tb, tree); |
| 2686 | 2785 |
_tree_set->insert(tb, tree); |
| 2687 | 2786 |
(*_blossom_data)[tb].pred = (*_blossom_data)[tb].next; |
| 2688 | 2787 |
} |
| 2689 | 2788 |
|
| 2690 | 2789 |
(*_blossom_data)[subblossoms[id]].status = ODD; |
| 2691 | 2790 |
matchedToOdd(subblossoms[id]); |
| 2692 | 2791 |
_tree_set->insert(subblossoms[id], tree); |
| 2693 | 2792 |
(*_blossom_data)[subblossoms[id]].next = next; |
| 2694 | 2793 |
(*_blossom_data)[subblossoms[id]].pred = pred; |
| 2695 | 2794 |
|
| 2696 | 2795 |
} else {
|
| 2697 | 2796 |
|
| 2698 | 2797 |
for (int i = (ib + 1) % subblossoms.size(); |
| 2699 | 2798 |
i != id; i = (i + 2) % subblossoms.size()) {
|
| 2700 | 2799 |
int sb = subblossoms[i]; |
| 2701 | 2800 |
int tb = subblossoms[(i + 1) % subblossoms.size()]; |
| 2702 | 2801 |
(*_blossom_data)[sb].next = |
| 2703 | 2802 |
_graph.oppositeArc((*_blossom_data)[tb].next); |
| 2704 | 2803 |
} |
| 2705 | 2804 |
|
| 2706 | 2805 |
for (int i = id; i != ib; i = (i + 2) % subblossoms.size()) {
|
| 2707 | 2806 |
int sb = subblossoms[i]; |
| 2708 | 2807 |
int tb = subblossoms[(i + 1) % subblossoms.size()]; |
| 2709 | 2808 |
int ub = subblossoms[(i + 2) % subblossoms.size()]; |
| 2710 | 2809 |
|
| 2711 | 2810 |
(*_blossom_data)[sb].status = ODD; |
| 2712 | 2811 |
matchedToOdd(sb); |
| 2713 | 2812 |
_tree_set->insert(sb, tree); |
| 2714 | 2813 |
(*_blossom_data)[sb].next = next; |
| 2715 | 2814 |
(*_blossom_data)[sb].pred = |
| 2716 | 2815 |
_graph.oppositeArc((*_blossom_data)[tb].next); |
| 2717 | 2816 |
|
| 2718 | 2817 |
(*_blossom_data)[tb].status = EVEN; |
| 2719 | 2818 |
matchedToEven(tb, tree); |
| 2720 | 2819 |
_tree_set->insert(tb, tree); |
| 2721 | 2820 |
(*_blossom_data)[tb].pred = |
| 2722 | 2821 |
(*_blossom_data)[tb].next = |
| 2723 | 2822 |
_graph.oppositeArc((*_blossom_data)[ub].next); |
| 2724 | 2823 |
next = (*_blossom_data)[ub].next; |
| 2725 | 2824 |
} |
| 2726 | 2825 |
|
| 2727 | 2826 |
(*_blossom_data)[subblossoms[ib]].status = ODD; |
| 2728 | 2827 |
matchedToOdd(subblossoms[ib]); |
| 2729 | 2828 |
_tree_set->insert(subblossoms[ib], tree); |
| 2730 | 2829 |
(*_blossom_data)[subblossoms[ib]].next = next; |
| 2731 | 2830 |
(*_blossom_data)[subblossoms[ib]].pred = pred; |
| 2732 | 2831 |
} |
| 2733 | 2832 |
_tree_set->erase(blossom); |
| 2734 | 2833 |
} |
| 2735 | 2834 |
|
| 2736 | 2835 |
void extractBlossom(int blossom, const Node& base, const Arc& matching) {
|
| 2737 | 2836 |
if (_blossom_set->trivial(blossom)) {
|
| 2738 | 2837 |
int bi = (*_node_index)[base]; |
| 2739 | 2838 |
Value pot = (*_node_data)[bi].pot; |
| 2740 | 2839 |
|
| 2741 |
_matching |
|
| 2840 |
(*_matching)[base] = matching; |
|
| 2742 | 2841 |
_blossom_node_list.push_back(base); |
| 2743 |
_node_potential |
|
| 2842 |
(*_node_potential)[base] = pot; |
|
| 2744 | 2843 |
} else {
|
| 2745 | 2844 |
|
| 2746 | 2845 |
Value pot = (*_blossom_data)[blossom].pot; |
| 2747 | 2846 |
int bn = _blossom_node_list.size(); |
| 2748 | 2847 |
|
| 2749 | 2848 |
std::vector<int> subblossoms; |
| 2750 | 2849 |
_blossom_set->split(blossom, std::back_inserter(subblossoms)); |
| 2751 | 2850 |
int b = _blossom_set->find(base); |
| 2752 | 2851 |
int ib = -1; |
| 2753 | 2852 |
for (int i = 0; i < int(subblossoms.size()); ++i) {
|
| 2754 | 2853 |
if (subblossoms[i] == b) { ib = i; break; }
|
| 2755 | 2854 |
} |
| 2756 | 2855 |
|
| 2757 | 2856 |
for (int i = 1; i < int(subblossoms.size()); i += 2) {
|
| 2758 | 2857 |
int sb = subblossoms[(ib + i) % subblossoms.size()]; |
| 2759 | 2858 |
int tb = subblossoms[(ib + i + 1) % subblossoms.size()]; |
| 2760 | 2859 |
|
| 2761 | 2860 |
Arc m = (*_blossom_data)[tb].next; |
| 2762 | 2861 |
extractBlossom(sb, _graph.target(m), _graph.oppositeArc(m)); |
| 2763 | 2862 |
extractBlossom(tb, _graph.source(m), m); |
| 2764 | 2863 |
} |
| 2765 | 2864 |
extractBlossom(subblossoms[ib], base, matching); |
| 2766 | 2865 |
|
| 2767 | 2866 |
int en = _blossom_node_list.size(); |
| 2768 | 2867 |
|
| 2769 | 2868 |
_blossom_potential.push_back(BlossomVariable(bn, en, pot)); |
| 2770 | 2869 |
} |
| 2771 | 2870 |
} |
| 2772 | 2871 |
|
| 2773 | 2872 |
void extractMatching() {
|
| 2774 | 2873 |
std::vector<int> blossoms; |
| 2775 | 2874 |
for (typename BlossomSet::ClassIt c(*_blossom_set); c != INVALID; ++c) {
|
| 2776 | 2875 |
blossoms.push_back(c); |
| 2777 | 2876 |
} |
| 2778 | 2877 |
|
| 2779 | 2878 |
for (int i = 0; i < int(blossoms.size()); ++i) {
|
| 2780 | 2879 |
|
| 2781 | 2880 |
Value offset = (*_blossom_data)[blossoms[i]].offset; |
| 2782 | 2881 |
(*_blossom_data)[blossoms[i]].pot += 2 * offset; |
| 2783 | 2882 |
for (typename BlossomSet::ItemIt n(*_blossom_set, blossoms[i]); |
| 2784 | 2883 |
n != INVALID; ++n) {
|
| 2785 | 2884 |
(*_node_data)[(*_node_index)[n]].pot -= offset; |
| 2786 | 2885 |
} |
| 2787 | 2886 |
|
| 2788 | 2887 |
Arc matching = (*_blossom_data)[blossoms[i]].next; |
| 2789 | 2888 |
Node base = _graph.source(matching); |
| 2790 | 2889 |
extractBlossom(blossoms[i], base, matching); |
| 2791 | 2890 |
} |
| 2792 | 2891 |
} |
| 2793 | 2892 |
|
| 2794 | 2893 |
public: |
| 2795 | 2894 |
|
| 2796 | 2895 |
/// \brief Constructor |
| 2797 | 2896 |
/// |
| 2798 | 2897 |
/// Constructor. |
| 2799 | 2898 |
MaxWeightedPerfectMatching(const Graph& graph, const WeightMap& weight) |
| 2800 | 2899 |
: _graph(graph), _weight(weight), _matching(0), |
| 2801 | 2900 |
_node_potential(0), _blossom_potential(), _blossom_node_list(), |
| 2802 | 2901 |
_node_num(0), _blossom_num(0), |
| 2803 | 2902 |
|
| 2804 | 2903 |
_blossom_index(0), _blossom_set(0), _blossom_data(0), |
| 2805 | 2904 |
_node_index(0), _node_heap_index(0), _node_data(0), |
| 2806 | 2905 |
_tree_set_index(0), _tree_set(0), |
| 2807 | 2906 |
|
| 2808 | 2907 |
_delta2_index(0), _delta2(0), |
| 2809 | 2908 |
_delta3_index(0), _delta3(0), |
| 2810 | 2909 |
_delta4_index(0), _delta4(0), |
| 2811 | 2910 |
|
| 2812 | 2911 |
_delta_sum() {}
|
| 2813 | 2912 |
|
| 2814 | 2913 |
~MaxWeightedPerfectMatching() {
|
| 2815 | 2914 |
destroyStructures(); |
| 2816 | 2915 |
} |
| 2817 | 2916 |
|
| 2818 |
/// \name Execution |
|
| 2917 |
/// \name Execution Control |
|
| 2819 | 2918 |
/// The simplest way to execute the algorithm is to use the |
| 2820 |
/// \ |
|
| 2919 |
/// \ref run() member function. |
|
| 2821 | 2920 |
|
| 2822 | 2921 |
///@{
|
| 2823 | 2922 |
|
| 2824 | 2923 |
/// \brief Initialize the algorithm |
| 2825 | 2924 |
/// |
| 2826 |
/// |
|
| 2925 |
/// This function initializes the algorithm. |
|
| 2827 | 2926 |
void init() {
|
| 2828 | 2927 |
createStructures(); |
| 2829 | 2928 |
|
| 2830 | 2929 |
for (ArcIt e(_graph); e != INVALID; ++e) {
|
| 2831 |
_node_heap_index |
|
| 2930 |
(*_node_heap_index)[e] = BinHeap<Value, IntArcMap>::PRE_HEAP; |
|
| 2832 | 2931 |
} |
| 2833 | 2932 |
for (EdgeIt e(_graph); e != INVALID; ++e) {
|
| 2834 |
_delta3_index |
|
| 2933 |
(*_delta3_index)[e] = _delta3->PRE_HEAP; |
|
| 2835 | 2934 |
} |
| 2836 | 2935 |
for (int i = 0; i < _blossom_num; ++i) {
|
| 2837 |
_delta2_index->set(i, _delta2->PRE_HEAP); |
|
| 2838 |
_delta4_index->set(i, _delta4->PRE_HEAP); |
|
| 2936 |
(*_delta2_index)[i] = _delta2->PRE_HEAP; |
|
| 2937 |
(*_delta4_index)[i] = _delta4->PRE_HEAP; |
|
| 2839 | 2938 |
} |
| 2840 | 2939 |
|
| 2841 | 2940 |
int index = 0; |
| 2842 | 2941 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 2843 | 2942 |
Value max = - std::numeric_limits<Value>::max(); |
| 2844 | 2943 |
for (OutArcIt e(_graph, n); e != INVALID; ++e) {
|
| 2845 | 2944 |
if (_graph.target(e) == n) continue; |
| 2846 | 2945 |
if ((dualScale * _weight[e]) / 2 > max) {
|
| 2847 | 2946 |
max = (dualScale * _weight[e]) / 2; |
| 2848 | 2947 |
} |
| 2849 | 2948 |
} |
| 2850 |
_node_index |
|
| 2949 |
(*_node_index)[n] = index; |
|
| 2851 | 2950 |
(*_node_data)[index].pot = max; |
| 2852 | 2951 |
int blossom = |
| 2853 | 2952 |
_blossom_set->insert(n, std::numeric_limits<Value>::max()); |
| 2854 | 2953 |
|
| 2855 | 2954 |
_tree_set->insert(blossom); |
| 2856 | 2955 |
|
| 2857 | 2956 |
(*_blossom_data)[blossom].status = EVEN; |
| 2858 | 2957 |
(*_blossom_data)[blossom].pred = INVALID; |
| 2859 | 2958 |
(*_blossom_data)[blossom].next = INVALID; |
| 2860 | 2959 |
(*_blossom_data)[blossom].pot = 0; |
| 2861 | 2960 |
(*_blossom_data)[blossom].offset = 0; |
| 2862 | 2961 |
++index; |
| 2863 | 2962 |
} |
| 2864 | 2963 |
for (EdgeIt e(_graph); e != INVALID; ++e) {
|
| 2865 | 2964 |
int si = (*_node_index)[_graph.u(e)]; |
| 2866 | 2965 |
int ti = (*_node_index)[_graph.v(e)]; |
| 2867 | 2966 |
if (_graph.u(e) != _graph.v(e)) {
|
| 2868 | 2967 |
_delta3->push(e, ((*_node_data)[si].pot + (*_node_data)[ti].pot - |
| 2869 | 2968 |
dualScale * _weight[e]) / 2); |
| 2870 | 2969 |
} |
| 2871 | 2970 |
} |
| 2872 | 2971 |
} |
| 2873 | 2972 |
|
| 2874 |
/// \brief |
|
| 2973 |
/// \brief Start the algorithm |
|
| 2875 | 2974 |
/// |
| 2876 |
/// |
|
| 2975 |
/// This function starts the algorithm. |
|
| 2976 |
/// |
|
| 2977 |
/// \pre \ref init() must be called before using this function. |
|
| 2877 | 2978 |
bool start() {
|
| 2878 | 2979 |
enum OpType {
|
| 2879 | 2980 |
D2, D3, D4 |
| 2880 | 2981 |
}; |
| 2881 | 2982 |
|
| 2882 | 2983 |
int unmatched = _node_num; |
| 2883 | 2984 |
while (unmatched > 0) {
|
| 2884 | 2985 |
Value d2 = !_delta2->empty() ? |
| 2885 | 2986 |
_delta2->prio() : std::numeric_limits<Value>::max(); |
| 2886 | 2987 |
|
| 2887 | 2988 |
Value d3 = !_delta3->empty() ? |
| 2888 | 2989 |
_delta3->prio() : std::numeric_limits<Value>::max(); |
| 2889 | 2990 |
|
| 2890 | 2991 |
Value d4 = !_delta4->empty() ? |
| 2891 | 2992 |
_delta4->prio() : std::numeric_limits<Value>::max(); |
| 2892 | 2993 |
|
| 2893 | 2994 |
_delta_sum = d2; OpType ot = D2; |
| 2894 | 2995 |
if (d3 < _delta_sum) { _delta_sum = d3; ot = D3; }
|
| 2895 | 2996 |
if (d4 < _delta_sum) { _delta_sum = d4; ot = D4; }
|
| 2896 | 2997 |
|
| 2897 | 2998 |
if (_delta_sum == std::numeric_limits<Value>::max()) {
|
| 2898 | 2999 |
return false; |
| 2899 | 3000 |
} |
| 2900 | 3001 |
|
| 2901 | 3002 |
switch (ot) {
|
| 2902 | 3003 |
case D2: |
| 2903 | 3004 |
{
|
| 2904 | 3005 |
int blossom = _delta2->top(); |
| 2905 | 3006 |
Node n = _blossom_set->classTop(blossom); |
| 2906 | 3007 |
Arc e = (*_node_data)[(*_node_index)[n]].heap.top(); |
| 2907 | 3008 |
extendOnArc(e); |
| 2908 | 3009 |
} |
| 2909 | 3010 |
break; |
| 2910 | 3011 |
case D3: |
| 2911 | 3012 |
{
|
| 2912 | 3013 |
Edge e = _delta3->top(); |
| 2913 | 3014 |
|
| 2914 | 3015 |
int left_blossom = _blossom_set->find(_graph.u(e)); |
| 2915 | 3016 |
int right_blossom = _blossom_set->find(_graph.v(e)); |
| 2916 | 3017 |
|
| 2917 | 3018 |
if (left_blossom == right_blossom) {
|
| 2918 | 3019 |
_delta3->pop(); |
| 2919 | 3020 |
} else {
|
| 2920 | 3021 |
int left_tree = _tree_set->find(left_blossom); |
| 2921 | 3022 |
int right_tree = _tree_set->find(right_blossom); |
| 2922 | 3023 |
|
| 2923 | 3024 |
if (left_tree == right_tree) {
|
| 2924 | 3025 |
shrinkOnEdge(e, left_tree); |
| 2925 | 3026 |
} else {
|
| 2926 | 3027 |
augmentOnEdge(e); |
| 2927 | 3028 |
unmatched -= 2; |
| 2928 | 3029 |
} |
| 2929 | 3030 |
} |
| 2930 | 3031 |
} break; |
| 2931 | 3032 |
case D4: |
| 2932 | 3033 |
splitBlossom(_delta4->top()); |
| 2933 | 3034 |
break; |
| 2934 | 3035 |
} |
| 2935 | 3036 |
} |
| 2936 | 3037 |
extractMatching(); |
| 2937 | 3038 |
return true; |
| 2938 | 3039 |
} |
| 2939 | 3040 |
|
| 2940 |
/// \brief |
|
| 3041 |
/// \brief Run the algorithm. |
|
| 2941 | 3042 |
/// |
| 2942 |
/// This method runs the %MaxWeightedPerfectMatching algorithm. |
|
| 3043 |
/// This method runs the \c %MaxWeightedPerfectMatching algorithm. |
|
| 2943 | 3044 |
/// |
| 2944 |
/// \note |
|
| 3045 |
/// \note mwpm.run() is just a shortcut of the following code. |
|
| 2945 | 3046 |
/// \code |
| 2946 |
/// mwm.init(); |
|
| 2947 |
/// mwm.start(); |
|
| 3047 |
/// mwpm.init(); |
|
| 3048 |
/// mwpm.start(); |
|
| 2948 | 3049 |
/// \endcode |
| 2949 | 3050 |
bool run() {
|
| 2950 | 3051 |
init(); |
| 2951 | 3052 |
return start(); |
| 2952 | 3053 |
} |
| 2953 | 3054 |
|
| 2954 | 3055 |
/// @} |
| 2955 | 3056 |
|
| 2956 |
/// \name Primal solution |
|
| 2957 |
/// Functions to get the primal solution, ie. the matching. |
|
| 3057 |
/// \name Primal Solution |
|
| 3058 |
/// Functions to get the primal solution, i.e. the maximum weighted |
|
| 3059 |
/// perfect matching.\n |
|
| 3060 |
/// Either \ref run() or \ref start() function should be called before |
|
| 3061 |
/// using them. |
|
| 2958 | 3062 |
|
| 2959 | 3063 |
/// @{
|
| 2960 | 3064 |
|
| 2961 |
/// \brief |
|
| 3065 |
/// \brief Return the weight of the matching. |
|
| 2962 | 3066 |
/// |
| 2963 |
/// Returns the matching value. |
|
| 2964 |
Value matchingValue() const {
|
|
| 3067 |
/// This function returns the weight of the found matching. |
|
| 3068 |
/// |
|
| 3069 |
/// \pre Either run() or start() must be called before using this function. |
|
| 3070 |
Value matchingWeight() const {
|
|
| 2965 | 3071 |
Value sum = 0; |
| 2966 | 3072 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 2967 | 3073 |
if ((*_matching)[n] != INVALID) {
|
| 2968 | 3074 |
sum += _weight[(*_matching)[n]]; |
| 2969 | 3075 |
} |
| 2970 | 3076 |
} |
| 2971 | 3077 |
return sum /= 2; |
| 2972 | 3078 |
} |
| 2973 | 3079 |
|
| 2974 |
/// \brief |
|
| 3080 |
/// \brief Return \c true if the given edge is in the matching. |
|
| 2975 | 3081 |
/// |
| 2976 |
/// |
|
| 3082 |
/// This function returns \c true if the given edge is in the found |
|
| 3083 |
/// matching. |
|
| 3084 |
/// |
|
| 3085 |
/// \pre Either run() or start() must be called before using this function. |
|
| 2977 | 3086 |
bool matching(const Edge& edge) const {
|
| 2978 | 3087 |
return static_cast<const Edge&>((*_matching)[_graph.u(edge)]) == edge; |
| 2979 | 3088 |
} |
| 2980 | 3089 |
|
| 2981 |
/// \brief |
|
| 3090 |
/// \brief Return the matching arc (or edge) incident to the given node. |
|
| 2982 | 3091 |
/// |
| 2983 |
/// |
|
| 3092 |
/// This function returns the matching arc (or edge) incident to the |
|
| 3093 |
/// given node in the found matching or \c INVALID if the node is |
|
| 3094 |
/// not covered by the matching. |
|
| 3095 |
/// |
|
| 3096 |
/// \pre Either run() or start() must be called before using this function. |
|
| 2984 | 3097 |
Arc matching(const Node& node) const {
|
| 2985 | 3098 |
return (*_matching)[node]; |
| 2986 | 3099 |
} |
| 2987 | 3100 |
|
| 2988 |
/// \brief |
|
| 3101 |
/// \brief Return a const reference to the matching map. |
|
| 2989 | 3102 |
/// |
| 2990 |
/// |
|
| 3103 |
/// This function returns a const reference to a node map that stores |
|
| 3104 |
/// the matching arc (or edge) incident to each node. |
|
| 3105 |
const MatchingMap& matchingMap() const {
|
|
| 3106 |
return *_matching; |
|
| 3107 |
} |
|
| 3108 |
|
|
| 3109 |
/// \brief Return the mate of the given node. |
|
| 3110 |
/// |
|
| 3111 |
/// This function returns the mate of the given node in the found |
|
| 3112 |
/// matching or \c INVALID if the node is not covered by the matching. |
|
| 3113 |
/// |
|
| 3114 |
/// \pre Either run() or start() must be called before using this function. |
|
| 2991 | 3115 |
Node mate(const Node& node) const {
|
| 2992 | 3116 |
return _graph.target((*_matching)[node]); |
| 2993 | 3117 |
} |
| 2994 | 3118 |
|
| 2995 | 3119 |
/// @} |
| 2996 | 3120 |
|
| 2997 |
/// \name Dual solution |
|
| 2998 |
/// Functions to get the dual solution. |
|
| 3121 |
/// \name Dual Solution |
|
| 3122 |
/// Functions to get the dual solution.\n |
|
| 3123 |
/// Either \ref run() or \ref start() function should be called before |
|
| 3124 |
/// using them. |
|
| 2999 | 3125 |
|
| 3000 | 3126 |
/// @{
|
| 3001 | 3127 |
|
| 3002 |
/// \brief |
|
| 3128 |
/// \brief Return the value of the dual solution. |
|
| 3003 | 3129 |
/// |
| 3004 |
/// Returns the value of the dual solution. It should be equal to |
|
| 3005 |
/// the primal value scaled by \ref dualScale "dual scale". |
|
| 3130 |
/// This function returns the value of the dual solution. |
|
| 3131 |
/// It should be equal to the primal value scaled by \ref dualScale |
|
| 3132 |
/// "dual scale". |
|
| 3133 |
/// |
|
| 3134 |
/// \pre Either run() or start() must be called before using this function. |
|
| 3006 | 3135 |
Value dualValue() const {
|
| 3007 | 3136 |
Value sum = 0; |
| 3008 | 3137 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 3009 | 3138 |
sum += nodeValue(n); |
| 3010 | 3139 |
} |
| 3011 | 3140 |
for (int i = 0; i < blossomNum(); ++i) {
|
| 3012 | 3141 |
sum += blossomValue(i) * (blossomSize(i) / 2); |
| 3013 | 3142 |
} |
| 3014 | 3143 |
return sum; |
| 3015 | 3144 |
} |
| 3016 | 3145 |
|
| 3017 |
/// \brief |
|
| 3146 |
/// \brief Return the dual value (potential) of the given node. |
|
| 3018 | 3147 |
/// |
| 3019 |
/// |
|
| 3148 |
/// This function returns the dual value (potential) of the given node. |
|
| 3149 |
/// |
|
| 3150 |
/// \pre Either run() or start() must be called before using this function. |
|
| 3020 | 3151 |
Value nodeValue(const Node& n) const {
|
| 3021 | 3152 |
return (*_node_potential)[n]; |
| 3022 | 3153 |
} |
| 3023 | 3154 |
|
| 3024 |
/// \brief |
|
| 3155 |
/// \brief Return the number of the blossoms in the basis. |
|
| 3025 | 3156 |
/// |
| 3026 |
/// |
|
| 3157 |
/// This function returns the number of the blossoms in the basis. |
|
| 3158 |
/// |
|
| 3159 |
/// \pre Either run() or start() must be called before using this function. |
|
| 3027 | 3160 |
/// \see BlossomIt |
| 3028 | 3161 |
int blossomNum() const {
|
| 3029 | 3162 |
return _blossom_potential.size(); |
| 3030 | 3163 |
} |
| 3031 | 3164 |
|
| 3032 |
|
|
| 3033 |
/// \brief Returns the number of the nodes in the blossom. |
|
| 3165 |
/// \brief Return the number of the nodes in the given blossom. |
|
| 3034 | 3166 |
/// |
| 3035 |
/// |
|
| 3167 |
/// This function returns the number of the nodes in the given blossom. |
|
| 3168 |
/// |
|
| 3169 |
/// \pre Either run() or start() must be called before using this function. |
|
| 3170 |
/// \see BlossomIt |
|
| 3036 | 3171 |
int blossomSize(int k) const {
|
| 3037 | 3172 |
return _blossom_potential[k].end - _blossom_potential[k].begin; |
| 3038 | 3173 |
} |
| 3039 | 3174 |
|
| 3040 |
/// \brief |
|
| 3175 |
/// \brief Return the dual value (ptential) of the given blossom. |
|
| 3041 | 3176 |
/// |
| 3042 |
/// Returns the the value of the blossom. |
|
| 3043 |
/// \see BlossomIt |
|
| 3177 |
/// This function returns the dual value (ptential) of the given blossom. |
|
| 3178 |
/// |
|
| 3179 |
/// \pre Either run() or start() must be called before using this function. |
|
| 3044 | 3180 |
Value blossomValue(int k) const {
|
| 3045 | 3181 |
return _blossom_potential[k].value; |
| 3046 | 3182 |
} |
| 3047 | 3183 |
|
| 3048 |
/// \brief Iterator for obtaining the nodes of |
|
| 3184 |
/// \brief Iterator for obtaining the nodes of a blossom. |
|
| 3049 | 3185 |
/// |
| 3050 |
/// Iterator for obtaining the nodes of the blossom. This class |
|
| 3051 |
/// provides a common lemon style iterator for listing a |
|
| 3052 |
/// |
|
| 3186 |
/// This class provides an iterator for obtaining the nodes of the |
|
| 3187 |
/// given blossom. It lists a subset of the nodes. |
|
| 3188 |
/// Before using this iterator, you must allocate a |
|
| 3189 |
/// MaxWeightedPerfectMatching class and execute it. |
|
| 3053 | 3190 |
class BlossomIt {
|
| 3054 | 3191 |
public: |
| 3055 | 3192 |
|
| 3056 | 3193 |
/// \brief Constructor. |
| 3057 | 3194 |
/// |
| 3058 |
/// Constructor to get the nodes of the variable. |
|
| 3195 |
/// Constructor to get the nodes of the given variable. |
|
| 3196 |
/// |
|
| 3197 |
/// \pre Either \ref MaxWeightedPerfectMatching::run() "algorithm.run()" |
|
| 3198 |
/// or \ref MaxWeightedPerfectMatching::start() "algorithm.start()" |
|
| 3199 |
/// must be called before initializing this iterator. |
|
| 3059 | 3200 |
BlossomIt(const MaxWeightedPerfectMatching& algorithm, int variable) |
| 3060 | 3201 |
: _algorithm(&algorithm) |
| 3061 | 3202 |
{
|
| 3062 | 3203 |
_index = _algorithm->_blossom_potential[variable].begin; |
| 3063 | 3204 |
_last = _algorithm->_blossom_potential[variable].end; |
| 3064 | 3205 |
} |
| 3065 | 3206 |
|
| 3066 |
/// \brief Conversion to |
|
| 3207 |
/// \brief Conversion to \c Node. |
|
| 3067 | 3208 |
/// |
| 3068 |
/// Conversion to |
|
| 3209 |
/// Conversion to \c Node. |
|
| 3069 | 3210 |
operator Node() const {
|
| 3070 | 3211 |
return _algorithm->_blossom_node_list[_index]; |
| 3071 | 3212 |
} |
| 3072 | 3213 |
|
| 3073 | 3214 |
/// \brief Increment operator. |
| 3074 | 3215 |
/// |
| 3075 | 3216 |
/// Increment operator. |
| 3076 | 3217 |
BlossomIt& operator++() {
|
| 3077 | 3218 |
++_index; |
| 3078 | 3219 |
return *this; |
| 3079 | 3220 |
} |
| 3080 | 3221 |
|
| 3081 | 3222 |
/// \brief Validity checking |
| 3082 | 3223 |
/// |
| 3083 |
/// |
|
| 3224 |
/// This function checks whether the iterator is invalid. |
|
| 3084 | 3225 |
bool operator==(Invalid) const { return _index == _last; }
|
| 3085 | 3226 |
|
| 3086 | 3227 |
/// \brief Validity checking |
| 3087 | 3228 |
/// |
| 3088 |
/// |
|
| 3229 |
/// This function checks whether the iterator is valid. |
|
| 3089 | 3230 |
bool operator!=(Invalid) const { return _index != _last; }
|
| 3090 | 3231 |
|
| 3091 | 3232 |
private: |
| 3092 | 3233 |
const MaxWeightedPerfectMatching* _algorithm; |
| 3093 | 3234 |
int _last; |
| 3094 | 3235 |
int _index; |
| 3095 | 3236 |
}; |
| 3096 | 3237 |
|
| 3097 | 3238 |
/// @} |
| 3098 | 3239 |
|
| 3099 | 3240 |
}; |
| 3100 | 3241 |
|
| 3101 |
|
|
| 3102 | 3242 |
} //END OF NAMESPACE LEMON |
| 3103 | 3243 |
|
| 3104 | 3244 |
#endif //LEMON_MAX_MATCHING_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_MATH_H |
| 20 | 20 |
#define LEMON_MATH_H |
| 21 | 21 |
|
| 22 | 22 |
///\ingroup misc |
| 23 | 23 |
///\file |
| 24 | 24 |
///\brief Some extensions to the standard \c cmath library. |
| 25 | 25 |
/// |
| 26 | 26 |
///Some extensions to the standard \c cmath library. |
| 27 | 27 |
/// |
| 28 | 28 |
///This file includes the standard math library (cmath). |
| 29 | 29 |
|
| 30 | 30 |
#include<cmath> |
| 31 | 31 |
|
| 32 | 32 |
namespace lemon {
|
| 33 | 33 |
|
| 34 | 34 |
/// \addtogroup misc |
| 35 | 35 |
/// @{
|
| 36 | 36 |
|
| 37 | 37 |
/// The Euler constant |
| 38 | 38 |
const long double E = 2.7182818284590452353602874713526625L; |
| 39 | 39 |
/// log_2(e) |
| 40 | 40 |
const long double LOG2E = 1.4426950408889634073599246810018921L; |
| 41 | 41 |
/// log_10(e) |
| 42 | 42 |
const long double LOG10E = 0.4342944819032518276511289189166051L; |
| 43 | 43 |
/// ln(2) |
| 44 | 44 |
const long double LN2 = 0.6931471805599453094172321214581766L; |
| 45 | 45 |
/// ln(10) |
| 46 | 46 |
const long double LN10 = 2.3025850929940456840179914546843642L; |
| 47 | 47 |
/// pi |
| 48 | 48 |
const long double PI = 3.1415926535897932384626433832795029L; |
| 49 | 49 |
/// pi/2 |
| 50 | 50 |
const long double PI_2 = 1.5707963267948966192313216916397514L; |
| 51 | 51 |
/// pi/4 |
| 52 | 52 |
const long double PI_4 = 0.7853981633974483096156608458198757L; |
| 53 | 53 |
/// sqrt(2) |
| 54 | 54 |
const long double SQRT2 = 1.4142135623730950488016887242096981L; |
| 55 | 55 |
/// 1/sqrt(2) |
| 56 | 56 |
const long double SQRT1_2 = 0.7071067811865475244008443621048490L; |
| 57 | 57 |
|
| 58 |
///Check whether the parameter is NaN or not |
|
| 59 |
|
|
| 60 |
///This function checks whether the parameter is NaN or not. |
|
| 61 |
///Is should be equivalent with std::isnan(), but it is not |
|
| 62 |
///provided by all compilers. |
|
| 63 |
inline bool isNaN(double v) |
|
| 64 |
{
|
|
| 65 |
return v!=v; |
|
| 66 |
} |
|
| 58 | 67 |
|
| 59 | 68 |
/// @} |
| 60 | 69 |
|
| 61 | 70 |
} //namespace lemon |
| 62 | 71 |
|
| 63 | 72 |
#endif //LEMON_TOLERANCE_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
///\ingroup paths |
| 20 | 20 |
///\file |
| 21 | 21 |
///\brief Classes for representing paths in digraphs. |
| 22 | 22 |
/// |
| 23 | 23 |
|
| 24 | 24 |
#ifndef LEMON_PATH_H |
| 25 | 25 |
#define LEMON_PATH_H |
| 26 | 26 |
|
| 27 | 27 |
#include <vector> |
| 28 | 28 |
#include <algorithm> |
| 29 | 29 |
|
| 30 | 30 |
#include <lemon/error.h> |
| 31 | 31 |
#include <lemon/core.h> |
| 32 | 32 |
#include <lemon/concepts/path.h> |
| 33 | 33 |
|
| 34 | 34 |
namespace lemon {
|
| 35 | 35 |
|
| 36 | 36 |
/// \addtogroup paths |
| 37 | 37 |
/// @{
|
| 38 | 38 |
|
| 39 | 39 |
|
| 40 | 40 |
/// \brief A structure for representing directed paths in a digraph. |
| 41 | 41 |
/// |
| 42 | 42 |
/// A structure for representing directed path in a digraph. |
| 43 |
/// \tparam |
|
| 43 |
/// \tparam GR The digraph type in which the path is. |
|
| 44 | 44 |
/// |
| 45 | 45 |
/// In a sense, the path can be treated as a list of arcs. The |
| 46 | 46 |
/// lemon path type stores just this list. As a consequence, it |
| 47 | 47 |
/// cannot enumerate the nodes of the path and the source node of |
| 48 | 48 |
/// a zero length path is undefined. |
| 49 | 49 |
/// |
| 50 | 50 |
/// This implementation is a back and front insertable and erasable |
| 51 | 51 |
/// path type. It can be indexed in O(1) time. The front and back |
| 52 | 52 |
/// insertion and erase is done in O(1) (amortized) time. The |
| 53 | 53 |
/// implementation uses two vectors for storing the front and back |
| 54 | 54 |
/// insertions. |
| 55 |
template <typename |
|
| 55 |
template <typename GR> |
|
| 56 | 56 |
class Path {
|
| 57 | 57 |
public: |
| 58 | 58 |
|
| 59 |
typedef |
|
| 59 |
typedef GR Digraph; |
|
| 60 | 60 |
typedef typename Digraph::Arc Arc; |
| 61 | 61 |
|
| 62 | 62 |
/// \brief Default constructor |
| 63 | 63 |
/// |
| 64 | 64 |
/// Default constructor |
| 65 | 65 |
Path() {}
|
| 66 | 66 |
|
| 67 | 67 |
/// \brief Template copy constructor |
| 68 | 68 |
/// |
| 69 | 69 |
/// This constuctor initializes the path from any other path type. |
| 70 | 70 |
/// It simply makes a copy of the given path. |
| 71 | 71 |
template <typename CPath> |
| 72 | 72 |
Path(const CPath& cpath) {
|
| 73 | 73 |
copyPath(*this, cpath); |
| 74 | 74 |
} |
| 75 | 75 |
|
| 76 | 76 |
/// \brief Template copy assignment |
| 77 | 77 |
/// |
| 78 | 78 |
/// This operator makes a copy of a path of any other type. |
| 79 | 79 |
template <typename CPath> |
| 80 | 80 |
Path& operator=(const CPath& cpath) {
|
| 81 | 81 |
copyPath(*this, cpath); |
| 82 | 82 |
return *this; |
| 83 | 83 |
} |
| 84 | 84 |
|
| 85 | 85 |
/// \brief LEMON style iterator for path arcs |
| 86 | 86 |
/// |
| 87 | 87 |
/// This class is used to iterate on the arcs of the paths. |
| 88 | 88 |
class ArcIt {
|
| 89 | 89 |
friend class Path; |
| 90 | 90 |
public: |
| 91 | 91 |
/// \brief Default constructor |
| 92 | 92 |
ArcIt() {}
|
| 93 | 93 |
/// \brief Invalid constructor |
| 94 | 94 |
ArcIt(Invalid) : path(0), idx(-1) {}
|
| 95 | 95 |
/// \brief Initializate the iterator to the first arc of path |
| 96 | 96 |
ArcIt(const Path &_path) |
| 97 | 97 |
: path(&_path), idx(_path.empty() ? -1 : 0) {}
|
| 98 | 98 |
|
| 99 | 99 |
private: |
| 100 | 100 |
|
| 101 | 101 |
ArcIt(const Path &_path, int _idx) |
| 102 | 102 |
: path(&_path), idx(_idx) {}
|
| 103 | 103 |
|
| 104 | 104 |
public: |
| 105 | 105 |
|
| 106 | 106 |
/// \brief Conversion to Arc |
| 107 | 107 |
operator const Arc&() const {
|
| 108 | 108 |
return path->nth(idx); |
| 109 | 109 |
} |
| 110 | 110 |
|
| 111 | 111 |
/// \brief Next arc |
| 112 | 112 |
ArcIt& operator++() {
|
| 113 | 113 |
++idx; |
| 114 | 114 |
if (idx >= path->length()) idx = -1; |
| 115 | 115 |
return *this; |
| 116 | 116 |
} |
| 117 | 117 |
|
| 118 | 118 |
/// \brief Comparison operator |
| 119 | 119 |
bool operator==(const ArcIt& e) const { return idx==e.idx; }
|
| 120 | 120 |
/// \brief Comparison operator |
| 121 | 121 |
bool operator!=(const ArcIt& e) const { return idx!=e.idx; }
|
| 122 | 122 |
/// \brief Comparison operator |
| 123 | 123 |
bool operator<(const ArcIt& e) const { return idx<e.idx; }
|
| 124 | 124 |
|
| 125 | 125 |
private: |
| 126 | 126 |
const Path *path; |
| 127 | 127 |
int idx; |
| 128 | 128 |
}; |
| 129 | 129 |
|
| 130 | 130 |
/// \brief Length of the path. |
| 131 | 131 |
int length() const { return head.size() + tail.size(); }
|
| 132 | 132 |
/// \brief Return whether the path is empty. |
| 133 | 133 |
bool empty() const { return head.empty() && tail.empty(); }
|
| 134 | 134 |
|
| 135 | 135 |
/// \brief Reset the path to an empty one. |
| 136 | 136 |
void clear() { head.clear(); tail.clear(); }
|
| 137 | 137 |
|
| 138 | 138 |
/// \brief The nth arc. |
| 139 | 139 |
/// |
| 140 |
/// \pre n is in the [0..length() - 1] range |
|
| 140 |
/// \pre \c n is in the <tt>[0..length() - 1]</tt> range. |
|
| 141 | 141 |
const Arc& nth(int n) const {
|
| 142 | 142 |
return n < int(head.size()) ? *(head.rbegin() + n) : |
| 143 | 143 |
*(tail.begin() + (n - head.size())); |
| 144 | 144 |
} |
| 145 | 145 |
|
| 146 | 146 |
/// \brief Initialize arc iterator to point to the nth arc |
| 147 | 147 |
/// |
| 148 |
/// \pre n is in the [0..length() - 1] range |
|
| 148 |
/// \pre \c n is in the <tt>[0..length() - 1]</tt> range. |
|
| 149 | 149 |
ArcIt nthIt(int n) const {
|
| 150 | 150 |
return ArcIt(*this, n); |
| 151 | 151 |
} |
| 152 | 152 |
|
| 153 | 153 |
/// \brief The first arc of the path |
| 154 | 154 |
const Arc& front() const {
|
| 155 | 155 |
return head.empty() ? tail.front() : head.back(); |
| 156 | 156 |
} |
| 157 | 157 |
|
| 158 | 158 |
/// \brief Add a new arc before the current path |
| 159 | 159 |
void addFront(const Arc& arc) {
|
| 160 | 160 |
head.push_back(arc); |
| 161 | 161 |
} |
| 162 | 162 |
|
| 163 | 163 |
/// \brief Erase the first arc of the path |
| 164 | 164 |
void eraseFront() {
|
| 165 | 165 |
if (!head.empty()) {
|
| 166 | 166 |
head.pop_back(); |
| 167 | 167 |
} else {
|
| 168 | 168 |
head.clear(); |
| 169 | 169 |
int halfsize = tail.size() / 2; |
| 170 | 170 |
head.resize(halfsize); |
| 171 | 171 |
std::copy(tail.begin() + 1, tail.begin() + halfsize + 1, |
| 172 | 172 |
head.rbegin()); |
| 173 | 173 |
std::copy(tail.begin() + halfsize + 1, tail.end(), tail.begin()); |
| 174 | 174 |
tail.resize(tail.size() - halfsize - 1); |
| 175 | 175 |
} |
| 176 | 176 |
} |
| 177 | 177 |
|
| 178 | 178 |
/// \brief The last arc of the path |
| 179 | 179 |
const Arc& back() const {
|
| 180 | 180 |
return tail.empty() ? head.front() : tail.back(); |
| 181 | 181 |
} |
| 182 | 182 |
|
| 183 | 183 |
/// \brief Add a new arc behind the current path |
| 184 | 184 |
void addBack(const Arc& arc) {
|
| 185 | 185 |
tail.push_back(arc); |
| 186 | 186 |
} |
| 187 | 187 |
|
| 188 | 188 |
/// \brief Erase the last arc of the path |
| 189 | 189 |
void eraseBack() {
|
| 190 | 190 |
if (!tail.empty()) {
|
| 191 | 191 |
tail.pop_back(); |
| 192 | 192 |
} else {
|
| 193 | 193 |
int halfsize = head.size() / 2; |
| 194 | 194 |
tail.resize(halfsize); |
| 195 | 195 |
std::copy(head.begin() + 1, head.begin() + halfsize + 1, |
| 196 | 196 |
tail.rbegin()); |
| 197 | 197 |
std::copy(head.begin() + halfsize + 1, head.end(), head.begin()); |
| 198 | 198 |
head.resize(head.size() - halfsize - 1); |
| 199 | 199 |
} |
| 200 | 200 |
} |
| 201 | 201 |
|
| 202 | 202 |
typedef True BuildTag; |
| 203 | 203 |
|
| 204 | 204 |
template <typename CPath> |
| 205 | 205 |
void build(const CPath& path) {
|
| 206 | 206 |
int len = path.length(); |
| 207 | 207 |
tail.reserve(len); |
| 208 | 208 |
for (typename CPath::ArcIt it(path); it != INVALID; ++it) {
|
| 209 | 209 |
tail.push_back(it); |
| 210 | 210 |
} |
| 211 | 211 |
} |
| 212 | 212 |
|
| 213 | 213 |
template <typename CPath> |
| 214 | 214 |
void buildRev(const CPath& path) {
|
| 215 | 215 |
int len = path.length(); |
| 216 | 216 |
head.reserve(len); |
| 217 | 217 |
for (typename CPath::RevArcIt it(path); it != INVALID; ++it) {
|
| 218 | 218 |
head.push_back(it); |
| 219 | 219 |
} |
| 220 | 220 |
} |
| 221 | 221 |
|
| 222 | 222 |
protected: |
| 223 | 223 |
typedef std::vector<Arc> Container; |
| 224 | 224 |
Container head, tail; |
| 225 | 225 |
|
| 226 | 226 |
}; |
| 227 | 227 |
|
| 228 | 228 |
/// \brief A structure for representing directed paths in a digraph. |
| 229 | 229 |
/// |
| 230 | 230 |
/// A structure for representing directed path in a digraph. |
| 231 |
/// \tparam |
|
| 231 |
/// \tparam GR The digraph type in which the path is. |
|
| 232 | 232 |
/// |
| 233 | 233 |
/// In a sense, the path can be treated as a list of arcs. The |
| 234 | 234 |
/// lemon path type stores just this list. As a consequence it |
| 235 | 235 |
/// cannot enumerate the nodes in the path and the zero length paths |
| 236 | 236 |
/// cannot store the source. |
| 237 | 237 |
/// |
| 238 | 238 |
/// This implementation is a just back insertable and erasable path |
| 239 | 239 |
/// type. It can be indexed in O(1) time. The back insertion and |
| 240 | 240 |
/// erasure is amortized O(1) time. This implementation is faster |
| 241 | 241 |
/// then the \c Path type because it use just one vector for the |
| 242 | 242 |
/// arcs. |
| 243 |
template <typename |
|
| 243 |
template <typename GR> |
|
| 244 | 244 |
class SimplePath {
|
| 245 | 245 |
public: |
| 246 | 246 |
|
| 247 |
typedef |
|
| 247 |
typedef GR Digraph; |
|
| 248 | 248 |
typedef typename Digraph::Arc Arc; |
| 249 | 249 |
|
| 250 | 250 |
/// \brief Default constructor |
| 251 | 251 |
/// |
| 252 | 252 |
/// Default constructor |
| 253 | 253 |
SimplePath() {}
|
| 254 | 254 |
|
| 255 | 255 |
/// \brief Template copy constructor |
| 256 | 256 |
/// |
| 257 | 257 |
/// This path can be initialized with any other path type. It just |
| 258 | 258 |
/// makes a copy of the given path. |
| 259 | 259 |
template <typename CPath> |
| 260 | 260 |
SimplePath(const CPath& cpath) {
|
| 261 | 261 |
copyPath(*this, cpath); |
| 262 | 262 |
} |
| 263 | 263 |
|
| 264 | 264 |
/// \brief Template copy assignment |
| 265 | 265 |
/// |
| 266 | 266 |
/// This path can be initialized with any other path type. It just |
| 267 | 267 |
/// makes a copy of the given path. |
| 268 | 268 |
template <typename CPath> |
| 269 | 269 |
SimplePath& operator=(const CPath& cpath) {
|
| 270 | 270 |
copyPath(*this, cpath); |
| 271 | 271 |
return *this; |
| 272 | 272 |
} |
| 273 | 273 |
|
| 274 | 274 |
/// \brief Iterator class to iterate on the arcs of the paths |
| 275 | 275 |
/// |
| 276 | 276 |
/// This class is used to iterate on the arcs of the paths |
| 277 | 277 |
/// |
| 278 | 278 |
/// Of course it converts to Digraph::Arc |
| 279 | 279 |
class ArcIt {
|
| 280 | 280 |
friend class SimplePath; |
| 281 | 281 |
public: |
| 282 | 282 |
/// Default constructor |
| 283 | 283 |
ArcIt() {}
|
| 284 | 284 |
/// Invalid constructor |
| 285 | 285 |
ArcIt(Invalid) : path(0), idx(-1) {}
|
| 286 | 286 |
/// \brief Initializate the constructor to the first arc of path |
| 287 | 287 |
ArcIt(const SimplePath &_path) |
| 288 | 288 |
: path(&_path), idx(_path.empty() ? -1 : 0) {}
|
| 289 | 289 |
|
| 290 | 290 |
private: |
| 291 | 291 |
|
| 292 | 292 |
/// Constructor with starting point |
| 293 | 293 |
ArcIt(const SimplePath &_path, int _idx) |
| 294 | 294 |
: idx(_idx), path(&_path) {}
|
| 295 | 295 |
|
| 296 | 296 |
public: |
| 297 | 297 |
|
| 298 | 298 |
///Conversion to Digraph::Arc |
| 299 | 299 |
operator const Arc&() const {
|
| 300 | 300 |
return path->nth(idx); |
| 301 | 301 |
} |
| 302 | 302 |
|
| 303 | 303 |
/// Next arc |
| 304 | 304 |
ArcIt& operator++() {
|
| 305 | 305 |
++idx; |
| 306 | 306 |
if (idx >= path->length()) idx = -1; |
| 307 | 307 |
return *this; |
| 308 | 308 |
} |
| 309 | 309 |
|
| 310 | 310 |
/// Comparison operator |
| 311 | 311 |
bool operator==(const ArcIt& e) const { return idx==e.idx; }
|
| 312 | 312 |
/// Comparison operator |
| 313 | 313 |
bool operator!=(const ArcIt& e) const { return idx!=e.idx; }
|
| 314 | 314 |
/// Comparison operator |
| 315 | 315 |
bool operator<(const ArcIt& e) const { return idx<e.idx; }
|
| 316 | 316 |
|
| 317 | 317 |
private: |
| 318 | 318 |
const SimplePath *path; |
| 319 | 319 |
int idx; |
| 320 | 320 |
}; |
| 321 | 321 |
|
| 322 | 322 |
/// \brief Length of the path. |
| 323 | 323 |
int length() const { return data.size(); }
|
| 324 | 324 |
/// \brief Return true if the path is empty. |
| 325 | 325 |
bool empty() const { return data.empty(); }
|
| 326 | 326 |
|
| 327 | 327 |
/// \brief Reset the path to an empty one. |
| 328 | 328 |
void clear() { data.clear(); }
|
| 329 | 329 |
|
| 330 | 330 |
/// \brief The nth arc. |
| 331 | 331 |
/// |
| 332 |
/// \pre n is in the [0..length() - 1] range |
|
| 332 |
/// \pre \c n is in the <tt>[0..length() - 1]</tt> range. |
|
| 333 | 333 |
const Arc& nth(int n) const {
|
| 334 | 334 |
return data[n]; |
| 335 | 335 |
} |
| 336 | 336 |
|
| 337 | 337 |
/// \brief Initializes arc iterator to point to the nth arc. |
| 338 | 338 |
ArcIt nthIt(int n) const {
|
| 339 | 339 |
return ArcIt(*this, n); |
| 340 | 340 |
} |
| 341 | 341 |
|
| 342 | 342 |
/// \brief The first arc of the path. |
| 343 | 343 |
const Arc& front() const {
|
| 344 | 344 |
return data.front(); |
| 345 | 345 |
} |
| 346 | 346 |
|
| 347 | 347 |
/// \brief The last arc of the path. |
| 348 | 348 |
const Arc& back() const {
|
| 349 | 349 |
return data.back(); |
| 350 | 350 |
} |
| 351 | 351 |
|
| 352 | 352 |
/// \brief Add a new arc behind the current path. |
| 353 | 353 |
void addBack(const Arc& arc) {
|
| 354 | 354 |
data.push_back(arc); |
| 355 | 355 |
} |
| 356 | 356 |
|
| 357 | 357 |
/// \brief Erase the last arc of the path |
| 358 | 358 |
void eraseBack() {
|
| 359 | 359 |
data.pop_back(); |
| 360 | 360 |
} |
| 361 | 361 |
|
| 362 | 362 |
typedef True BuildTag; |
| 363 | 363 |
|
| 364 | 364 |
template <typename CPath> |
| 365 | 365 |
void build(const CPath& path) {
|
| 366 | 366 |
int len = path.length(); |
| 367 | 367 |
data.resize(len); |
| 368 | 368 |
int index = 0; |
| 369 | 369 |
for (typename CPath::ArcIt it(path); it != INVALID; ++it) {
|
| 370 | 370 |
data[index] = it;; |
| 371 | 371 |
++index; |
| 372 | 372 |
} |
| 373 | 373 |
} |
| 374 | 374 |
|
| 375 | 375 |
template <typename CPath> |
| 376 | 376 |
void buildRev(const CPath& path) {
|
| 377 | 377 |
int len = path.length(); |
| 378 | 378 |
data.resize(len); |
| 379 | 379 |
int index = len; |
| 380 | 380 |
for (typename CPath::RevArcIt it(path); it != INVALID; ++it) {
|
| 381 | 381 |
--index; |
| 382 | 382 |
data[index] = it;; |
| 383 | 383 |
} |
| 384 | 384 |
} |
| 385 | 385 |
|
| 386 | 386 |
protected: |
| 387 | 387 |
typedef std::vector<Arc> Container; |
| 388 | 388 |
Container data; |
| 389 | 389 |
|
| 390 | 390 |
}; |
| 391 | 391 |
|
| 392 | 392 |
/// \brief A structure for representing directed paths in a digraph. |
| 393 | 393 |
/// |
| 394 | 394 |
/// A structure for representing directed path in a digraph. |
| 395 |
/// \tparam |
|
| 395 |
/// \tparam GR The digraph type in which the path is. |
|
| 396 | 396 |
/// |
| 397 | 397 |
/// In a sense, the path can be treated as a list of arcs. The |
| 398 | 398 |
/// lemon path type stores just this list. As a consequence it |
| 399 | 399 |
/// cannot enumerate the nodes in the path and the zero length paths |
| 400 | 400 |
/// cannot store the source. |
| 401 | 401 |
/// |
| 402 | 402 |
/// This implementation is a back and front insertable and erasable |
| 403 | 403 |
/// path type. It can be indexed in O(k) time, where k is the rank |
| 404 | 404 |
/// of the arc in the path. The length can be computed in O(n) |
| 405 | 405 |
/// time. The front and back insertion and erasure is O(1) time |
| 406 | 406 |
/// and it can be splited and spliced in O(1) time. |
| 407 |
template <typename |
|
| 407 |
template <typename GR> |
|
| 408 | 408 |
class ListPath {
|
| 409 | 409 |
public: |
| 410 | 410 |
|
| 411 |
typedef |
|
| 411 |
typedef GR Digraph; |
|
| 412 | 412 |
typedef typename Digraph::Arc Arc; |
| 413 | 413 |
|
| 414 | 414 |
protected: |
| 415 | 415 |
|
| 416 | 416 |
// the std::list<> is incompatible |
| 417 | 417 |
// hard to create invalid iterator |
| 418 | 418 |
struct Node {
|
| 419 | 419 |
Arc arc; |
| 420 | 420 |
Node *next, *prev; |
| 421 | 421 |
}; |
| 422 | 422 |
|
| 423 | 423 |
Node *first, *last; |
| 424 | 424 |
|
| 425 | 425 |
std::allocator<Node> alloc; |
| 426 | 426 |
|
| 427 | 427 |
public: |
| 428 | 428 |
|
| 429 | 429 |
/// \brief Default constructor |
| 430 | 430 |
/// |
| 431 | 431 |
/// Default constructor |
| 432 | 432 |
ListPath() : first(0), last(0) {}
|
| 433 | 433 |
|
| 434 | 434 |
/// \brief Template copy constructor |
| 435 | 435 |
/// |
| 436 | 436 |
/// This path can be initialized with any other path type. It just |
| 437 | 437 |
/// makes a copy of the given path. |
| 438 | 438 |
template <typename CPath> |
| 439 | 439 |
ListPath(const CPath& cpath) : first(0), last(0) {
|
| 440 | 440 |
copyPath(*this, cpath); |
| 441 | 441 |
} |
| 442 | 442 |
|
| 443 | 443 |
/// \brief Destructor of the path |
| 444 | 444 |
/// |
| 445 | 445 |
/// Destructor of the path |
| 446 | 446 |
~ListPath() {
|
| 447 | 447 |
clear(); |
| 448 | 448 |
} |
| 449 | 449 |
|
| 450 | 450 |
/// \brief Template copy assignment |
| 451 | 451 |
/// |
| 452 | 452 |
/// This path can be initialized with any other path type. It just |
| 453 | 453 |
/// makes a copy of the given path. |
| 454 | 454 |
template <typename CPath> |
| 455 | 455 |
ListPath& operator=(const CPath& cpath) {
|
| 456 | 456 |
copyPath(*this, cpath); |
| 457 | 457 |
return *this; |
| 458 | 458 |
} |
| 459 | 459 |
|
| 460 | 460 |
/// \brief Iterator class to iterate on the arcs of the paths |
| 461 | 461 |
/// |
| 462 | 462 |
/// This class is used to iterate on the arcs of the paths |
| 463 | 463 |
/// |
| 464 | 464 |
/// Of course it converts to Digraph::Arc |
| 465 | 465 |
class ArcIt {
|
| 466 | 466 |
friend class ListPath; |
| 467 | 467 |
public: |
| 468 | 468 |
/// Default constructor |
| 469 | 469 |
ArcIt() {}
|
| 470 | 470 |
/// Invalid constructor |
| 471 | 471 |
ArcIt(Invalid) : path(0), node(0) {}
|
| 472 | 472 |
/// \brief Initializate the constructor to the first arc of path |
| 473 | 473 |
ArcIt(const ListPath &_path) |
| 474 | 474 |
: path(&_path), node(_path.first) {}
|
| 475 | 475 |
|
| 476 | 476 |
protected: |
| 477 | 477 |
|
| 478 | 478 |
ArcIt(const ListPath &_path, Node *_node) |
| 479 | 479 |
: path(&_path), node(_node) {}
|
| 480 | 480 |
|
| 481 | 481 |
|
| 482 | 482 |
public: |
| 483 | 483 |
|
| 484 | 484 |
///Conversion to Digraph::Arc |
| 485 | 485 |
operator const Arc&() const {
|
| 486 | 486 |
return node->arc; |
| 487 | 487 |
} |
| 488 | 488 |
|
| 489 | 489 |
/// Next arc |
| 490 | 490 |
ArcIt& operator++() {
|
| 491 | 491 |
node = node->next; |
| 492 | 492 |
return *this; |
| 493 | 493 |
} |
| 494 | 494 |
|
| 495 | 495 |
/// Comparison operator |
| 496 | 496 |
bool operator==(const ArcIt& e) const { return node==e.node; }
|
| 497 | 497 |
/// Comparison operator |
| 498 | 498 |
bool operator!=(const ArcIt& e) const { return node!=e.node; }
|
| 499 | 499 |
/// Comparison operator |
| 500 | 500 |
bool operator<(const ArcIt& e) const { return node<e.node; }
|
| 501 | 501 |
|
| 502 | 502 |
private: |
| 503 | 503 |
const ListPath *path; |
| 504 | 504 |
Node *node; |
| 505 | 505 |
}; |
| 506 | 506 |
|
| 507 | 507 |
/// \brief The nth arc. |
| 508 | 508 |
/// |
| 509 | 509 |
/// This function looks for the nth arc in O(n) time. |
| 510 |
/// \pre n is in the [0..length() - 1] range |
|
| 510 |
/// \pre \c n is in the <tt>[0..length() - 1]</tt> range. |
|
| 511 | 511 |
const Arc& nth(int n) const {
|
| 512 | 512 |
Node *node = first; |
| 513 | 513 |
for (int i = 0; i < n; ++i) {
|
| 514 | 514 |
node = node->next; |
| 515 | 515 |
} |
| 516 | 516 |
return node->arc; |
| 517 | 517 |
} |
| 518 | 518 |
|
| 519 | 519 |
/// \brief Initializes arc iterator to point to the nth arc. |
| 520 | 520 |
ArcIt nthIt(int n) const {
|
| 521 | 521 |
Node *node = first; |
| 522 | 522 |
for (int i = 0; i < n; ++i) {
|
| 523 | 523 |
node = node->next; |
| 524 | 524 |
} |
| 525 | 525 |
return ArcIt(*this, node); |
| 526 | 526 |
} |
| 527 | 527 |
|
| 528 | 528 |
/// \brief Length of the path. |
| 529 | 529 |
int length() const {
|
| 530 | 530 |
int len = 0; |
| 531 | 531 |
Node *node = first; |
| 532 | 532 |
while (node != 0) {
|
| 533 | 533 |
node = node->next; |
| 534 | 534 |
++len; |
| 535 | 535 |
} |
| 536 | 536 |
return len; |
| 537 | 537 |
} |
| 538 | 538 |
|
| 539 | 539 |
/// \brief Return true if the path is empty. |
| 540 | 540 |
bool empty() const { return first == 0; }
|
| 541 | 541 |
|
| 542 | 542 |
/// \brief Reset the path to an empty one. |
| 543 | 543 |
void clear() {
|
| 544 | 544 |
while (first != 0) {
|
| 545 | 545 |
last = first->next; |
| 546 | 546 |
alloc.destroy(first); |
| 547 | 547 |
alloc.deallocate(first, 1); |
| 548 | 548 |
first = last; |
| 549 | 549 |
} |
| 550 | 550 |
} |
| 551 | 551 |
|
| 552 | 552 |
/// \brief The first arc of the path |
| 553 | 553 |
const Arc& front() const {
|
| 554 | 554 |
return first->arc; |
| 555 | 555 |
} |
| 556 | 556 |
|
| 557 | 557 |
/// \brief Add a new arc before the current path |
| 558 | 558 |
void addFront(const Arc& arc) {
|
| 559 | 559 |
Node *node = alloc.allocate(1); |
| 560 | 560 |
alloc.construct(node, Node()); |
| 561 | 561 |
node->prev = 0; |
| 562 | 562 |
node->next = first; |
| 563 | 563 |
node->arc = arc; |
| 564 | 564 |
if (first) {
|
| 565 | 565 |
first->prev = node; |
| 566 | 566 |
first = node; |
| 567 | 567 |
} else {
|
| 568 | 568 |
first = last = node; |
| 569 | 569 |
} |
| 570 | 570 |
} |
| 571 | 571 |
|
| 572 | 572 |
/// \brief Erase the first arc of the path |
| 573 | 573 |
void eraseFront() {
|
| 574 | 574 |
Node *node = first; |
| 575 | 575 |
first = first->next; |
| 576 | 576 |
if (first) {
|
| 577 | 577 |
first->prev = 0; |
| 578 | 578 |
} else {
|
| 579 | 579 |
last = 0; |
| 580 | 580 |
} |
| 581 | 581 |
alloc.destroy(node); |
| 582 | 582 |
alloc.deallocate(node, 1); |
| 583 | 583 |
} |
| 584 | 584 |
|
| 585 | 585 |
/// \brief The last arc of the path. |
| 586 | 586 |
const Arc& back() const {
|
| 587 | 587 |
return last->arc; |
| 588 | 588 |
} |
| 589 | 589 |
|
| 590 | 590 |
/// \brief Add a new arc behind the current path. |
| 591 | 591 |
void addBack(const Arc& arc) {
|
| 592 | 592 |
Node *node = alloc.allocate(1); |
| 593 | 593 |
alloc.construct(node, Node()); |
| 594 | 594 |
node->next = 0; |
| 595 | 595 |
node->prev = last; |
| 596 | 596 |
node->arc = arc; |
| 597 | 597 |
if (last) {
|
| 598 | 598 |
last->next = node; |
| 599 | 599 |
last = node; |
| 600 | 600 |
} else {
|
| 601 | 601 |
last = first = node; |
| 602 | 602 |
} |
| 603 | 603 |
} |
| 604 | 604 |
|
| 605 | 605 |
/// \brief Erase the last arc of the path |
| 606 | 606 |
void eraseBack() {
|
| 607 | 607 |
Node *node = last; |
| 608 | 608 |
last = last->prev; |
| 609 | 609 |
if (last) {
|
| 610 | 610 |
last->next = 0; |
| 611 | 611 |
} else {
|
| 612 | 612 |
first = 0; |
| 613 | 613 |
} |
| 614 | 614 |
alloc.destroy(node); |
| 615 | 615 |
alloc.deallocate(node, 1); |
| 616 | 616 |
} |
| 617 | 617 |
|
| 618 | 618 |
/// \brief Splice a path to the back of the current path. |
| 619 | 619 |
/// |
| 620 | 620 |
/// It splices \c tpath to the back of the current path and \c |
| 621 | 621 |
/// tpath becomes empty. The time complexity of this function is |
| 622 | 622 |
/// O(1). |
| 623 | 623 |
void spliceBack(ListPath& tpath) {
|
| 624 | 624 |
if (first) {
|
| 625 | 625 |
if (tpath.first) {
|
| 626 | 626 |
last->next = tpath.first; |
| 627 | 627 |
tpath.first->prev = last; |
| 628 | 628 |
last = tpath.last; |
| 629 | 629 |
} |
| 630 | 630 |
} else {
|
| 631 | 631 |
first = tpath.first; |
| 632 | 632 |
last = tpath.last; |
| 633 | 633 |
} |
| 634 | 634 |
tpath.first = tpath.last = 0; |
| 635 | 635 |
} |
| 636 | 636 |
|
| 637 | 637 |
/// \brief Splice a path to the front of the current path. |
| 638 | 638 |
/// |
| 639 | 639 |
/// It splices \c tpath before the current path and \c tpath |
| 640 | 640 |
/// becomes empty. The time complexity of this function |
| 641 | 641 |
/// is O(1). |
| 642 | 642 |
void spliceFront(ListPath& tpath) {
|
| 643 | 643 |
if (first) {
|
| 644 | 644 |
if (tpath.first) {
|
| 645 | 645 |
first->prev = tpath.last; |
| 646 | 646 |
tpath.last->next = first; |
| 647 | 647 |
first = tpath.first; |
| 648 | 648 |
} |
| 649 | 649 |
} else {
|
| 650 | 650 |
first = tpath.first; |
| 651 | 651 |
last = tpath.last; |
| 652 | 652 |
} |
| 653 | 653 |
tpath.first = tpath.last = 0; |
| 654 | 654 |
} |
| 655 | 655 |
|
| 656 | 656 |
/// \brief Splice a path into the current path. |
| 657 | 657 |
/// |
| 658 | 658 |
/// It splices the \c tpath into the current path before the |
| 659 | 659 |
/// position of \c it iterator and \c tpath becomes empty. The |
| 660 | 660 |
/// time complexity of this function is O(1). If the \c it is |
| 661 | 661 |
/// \c INVALID then it will splice behind the current path. |
| 662 | 662 |
void splice(ArcIt it, ListPath& tpath) {
|
| 663 | 663 |
if (it.node) {
|
| 664 | 664 |
if (tpath.first) {
|
| 665 | 665 |
tpath.first->prev = it.node->prev; |
| 666 | 666 |
if (it.node->prev) {
|
| 667 | 667 |
it.node->prev->next = tpath.first; |
| 668 | 668 |
} else {
|
| 669 | 669 |
first = tpath.first; |
| 670 | 670 |
} |
| 671 | 671 |
it.node->prev = tpath.last; |
| 672 | 672 |
tpath.last->next = it.node; |
| 673 | 673 |
} |
| 674 | 674 |
} else {
|
| 675 | 675 |
if (first) {
|
| 676 | 676 |
if (tpath.first) {
|
| 677 | 677 |
last->next = tpath.first; |
| 678 | 678 |
tpath.first->prev = last; |
| 679 | 679 |
last = tpath.last; |
| 680 | 680 |
} |
| 681 | 681 |
} else {
|
| 682 | 682 |
first = tpath.first; |
| 683 | 683 |
last = tpath.last; |
| 684 | 684 |
} |
| 685 | 685 |
} |
| 686 | 686 |
tpath.first = tpath.last = 0; |
| 687 | 687 |
} |
| 688 | 688 |
|
| 689 | 689 |
/// \brief Split the current path. |
| 690 | 690 |
/// |
| 691 | 691 |
/// It splits the current path into two parts. The part before |
| 692 | 692 |
/// the iterator \c it will remain in the current path and the part |
| 693 | 693 |
/// starting with |
| 694 | 694 |
/// \c it will put into \c tpath. If \c tpath have arcs |
| 695 | 695 |
/// before the operation they are removed first. The time |
| 696 | 696 |
/// complexity of this function is O(1) plus the the time of emtying |
| 697 | 697 |
/// \c tpath. If \c it is \c INVALID then it just clears \c tpath |
| 698 | 698 |
void split(ArcIt it, ListPath& tpath) {
|
| 699 | 699 |
tpath.clear(); |
| 700 | 700 |
if (it.node) {
|
| 701 | 701 |
tpath.first = it.node; |
| 702 | 702 |
tpath.last = last; |
| 703 | 703 |
if (it.node->prev) {
|
| 704 | 704 |
last = it.node->prev; |
| 705 | 705 |
last->next = 0; |
| 706 | 706 |
} else {
|
| 707 | 707 |
first = last = 0; |
| 708 | 708 |
} |
| 709 | 709 |
it.node->prev = 0; |
| 710 | 710 |
} |
| 711 | 711 |
} |
| 712 | 712 |
|
| 713 | 713 |
|
| 714 | 714 |
typedef True BuildTag; |
| 715 | 715 |
|
| 716 | 716 |
template <typename CPath> |
| 717 | 717 |
void build(const CPath& path) {
|
| 718 | 718 |
for (typename CPath::ArcIt it(path); it != INVALID; ++it) {
|
| 719 | 719 |
addBack(it); |
| 720 | 720 |
} |
| 721 | 721 |
} |
| 722 | 722 |
|
| 723 | 723 |
template <typename CPath> |
| 724 | 724 |
void buildRev(const CPath& path) {
|
| 725 | 725 |
for (typename CPath::RevArcIt it(path); it != INVALID; ++it) {
|
| 726 | 726 |
addFront(it); |
| 727 | 727 |
} |
| 728 | 728 |
} |
| 729 | 729 |
|
| 730 | 730 |
}; |
| 731 | 731 |
|
| 732 | 732 |
/// \brief A structure for representing directed paths in a digraph. |
| 733 | 733 |
/// |
| 734 | 734 |
/// A structure for representing directed path in a digraph. |
| 735 |
/// \tparam |
|
| 735 |
/// \tparam GR The digraph type in which the path is. |
|
| 736 | 736 |
/// |
| 737 | 737 |
/// In a sense, the path can be treated as a list of arcs. The |
| 738 | 738 |
/// lemon path type stores just this list. As a consequence it |
| 739 | 739 |
/// cannot enumerate the nodes in the path and the source node of |
| 740 | 740 |
/// a zero length path is undefined. |
| 741 | 741 |
/// |
| 742 | 742 |
/// This implementation is completly static, i.e. it can be copy constucted |
| 743 | 743 |
/// or copy assigned from another path, but otherwise it cannot be |
| 744 | 744 |
/// modified. |
| 745 | 745 |
/// |
| 746 | 746 |
/// Being the the most memory efficient path type in LEMON, |
| 747 | 747 |
/// it is intented to be |
| 748 | 748 |
/// used when you want to store a large number of paths. |
| 749 |
template <typename |
|
| 749 |
template <typename GR> |
|
| 750 | 750 |
class StaticPath {
|
| 751 | 751 |
public: |
| 752 | 752 |
|
| 753 |
typedef |
|
| 753 |
typedef GR Digraph; |
|
| 754 | 754 |
typedef typename Digraph::Arc Arc; |
| 755 | 755 |
|
| 756 | 756 |
/// \brief Default constructor |
| 757 | 757 |
/// |
| 758 | 758 |
/// Default constructor |
| 759 | 759 |
StaticPath() : len(0), arcs(0) {}
|
| 760 | 760 |
|
| 761 | 761 |
/// \brief Template copy constructor |
| 762 | 762 |
/// |
| 763 | 763 |
/// This path can be initialized from any other path type. |
| 764 | 764 |
template <typename CPath> |
| 765 | 765 |
StaticPath(const CPath& cpath) : arcs(0) {
|
| 766 | 766 |
copyPath(*this, cpath); |
| 767 | 767 |
} |
| 768 | 768 |
|
| 769 | 769 |
/// \brief Destructor of the path |
| 770 | 770 |
/// |
| 771 | 771 |
/// Destructor of the path |
| 772 | 772 |
~StaticPath() {
|
| 773 | 773 |
if (arcs) delete[] arcs; |
| 774 | 774 |
} |
| 775 | 775 |
|
| 776 | 776 |
/// \brief Template copy assignment |
| 777 | 777 |
/// |
| 778 | 778 |
/// This path can be made equal to any other path type. It simply |
| 779 | 779 |
/// makes a copy of the given path. |
| 780 | 780 |
template <typename CPath> |
| 781 | 781 |
StaticPath& operator=(const CPath& cpath) {
|
| 782 | 782 |
copyPath(*this, cpath); |
| 783 | 783 |
return *this; |
| 784 | 784 |
} |
| 785 | 785 |
|
| 786 | 786 |
/// \brief Iterator class to iterate on the arcs of the paths |
| 787 | 787 |
/// |
| 788 | 788 |
/// This class is used to iterate on the arcs of the paths |
| 789 | 789 |
/// |
| 790 | 790 |
/// Of course it converts to Digraph::Arc |
| 791 | 791 |
class ArcIt {
|
| 792 | 792 |
friend class StaticPath; |
| 793 | 793 |
public: |
| 794 | 794 |
/// Default constructor |
| 795 | 795 |
ArcIt() {}
|
| 796 | 796 |
/// Invalid constructor |
| 797 | 797 |
ArcIt(Invalid) : path(0), idx(-1) {}
|
| 798 | 798 |
/// Initializate the constructor to the first arc of path |
| 799 | 799 |
ArcIt(const StaticPath &_path) |
| 800 | 800 |
: path(&_path), idx(_path.empty() ? -1 : 0) {}
|
| 801 | 801 |
|
| 802 | 802 |
private: |
| 803 | 803 |
|
| 804 | 804 |
/// Constructor with starting point |
| 805 | 805 |
ArcIt(const StaticPath &_path, int _idx) |
| 806 | 806 |
: idx(_idx), path(&_path) {}
|
| 807 | 807 |
|
| 808 | 808 |
public: |
| 809 | 809 |
|
| 810 | 810 |
///Conversion to Digraph::Arc |
| 811 | 811 |
operator const Arc&() const {
|
| 812 | 812 |
return path->nth(idx); |
| 813 | 813 |
} |
| 814 | 814 |
|
| 815 | 815 |
/// Next arc |
| 816 | 816 |
ArcIt& operator++() {
|
| 817 | 817 |
++idx; |
| 818 | 818 |
if (idx >= path->length()) idx = -1; |
| 819 | 819 |
return *this; |
| 820 | 820 |
} |
| 821 | 821 |
|
| 822 | 822 |
/// Comparison operator |
| 823 | 823 |
bool operator==(const ArcIt& e) const { return idx==e.idx; }
|
| 824 | 824 |
/// Comparison operator |
| 825 | 825 |
bool operator!=(const ArcIt& e) const { return idx!=e.idx; }
|
| 826 | 826 |
/// Comparison operator |
| 827 | 827 |
bool operator<(const ArcIt& e) const { return idx<e.idx; }
|
| 828 | 828 |
|
| 829 | 829 |
private: |
| 830 | 830 |
const StaticPath *path; |
| 831 | 831 |
int idx; |
| 832 | 832 |
}; |
| 833 | 833 |
|
| 834 | 834 |
/// \brief The nth arc. |
| 835 | 835 |
/// |
| 836 |
/// \pre n is in the [0..length() - 1] range |
|
| 836 |
/// \pre \c n is in the <tt>[0..length() - 1]</tt> range. |
|
| 837 | 837 |
const Arc& nth(int n) const {
|
| 838 | 838 |
return arcs[n]; |
| 839 | 839 |
} |
| 840 | 840 |
|
| 841 | 841 |
/// \brief The arc iterator pointing to the nth arc. |
| 842 | 842 |
ArcIt nthIt(int n) const {
|
| 843 | 843 |
return ArcIt(*this, n); |
| 844 | 844 |
} |
| 845 | 845 |
|
| 846 | 846 |
/// \brief The length of the path. |
| 847 | 847 |
int length() const { return len; }
|
| 848 | 848 |
|
| 849 | 849 |
/// \brief Return true when the path is empty. |
| 850 | 850 |
int empty() const { return len == 0; }
|
| 851 | 851 |
|
| 852 | 852 |
/// \brief Erase all arcs in the digraph. |
| 853 | 853 |
void clear() {
|
| 854 | 854 |
len = 0; |
| 855 | 855 |
if (arcs) delete[] arcs; |
| 856 | 856 |
arcs = 0; |
| 857 | 857 |
} |
| 858 | 858 |
|
| 859 | 859 |
/// \brief The first arc of the path. |
| 860 | 860 |
const Arc& front() const {
|
| 861 | 861 |
return arcs[0]; |
| 862 | 862 |
} |
| 863 | 863 |
|
| 864 | 864 |
/// \brief The last arc of the path. |
| 865 | 865 |
const Arc& back() const {
|
| 866 | 866 |
return arcs[len - 1]; |
| 867 | 867 |
} |
| 868 | 868 |
|
| 869 | 869 |
|
| 870 | 870 |
typedef True BuildTag; |
| 871 | 871 |
|
| 872 | 872 |
template <typename CPath> |
| 873 | 873 |
void build(const CPath& path) {
|
| 874 | 874 |
len = path.length(); |
| 875 | 875 |
arcs = new Arc[len]; |
| 876 | 876 |
int index = 0; |
| 877 | 877 |
for (typename CPath::ArcIt it(path); it != INVALID; ++it) {
|
| 878 | 878 |
arcs[index] = it; |
| 879 | 879 |
++index; |
| 880 | 880 |
} |
| 881 | 881 |
} |
| 882 | 882 |
|
| 883 | 883 |
template <typename CPath> |
| 884 | 884 |
void buildRev(const CPath& path) {
|
| 885 | 885 |
len = path.length(); |
| 886 | 886 |
arcs = new Arc[len]; |
| 887 | 887 |
int index = len; |
| 888 | 888 |
for (typename CPath::RevArcIt it(path); it != INVALID; ++it) {
|
| 889 | 889 |
--index; |
| 890 | 890 |
arcs[index] = it; |
| 891 | 891 |
} |
| 892 | 892 |
} |
| 893 | 893 |
|
| 894 | 894 |
private: |
| 895 | 895 |
int len; |
| 896 | 896 |
Arc* arcs; |
| 897 | 897 |
}; |
| 898 | 898 |
|
| 899 | 899 |
/////////////////////////////////////////////////////////////////////// |
| 900 | 900 |
// Additional utilities |
| 901 | 901 |
/////////////////////////////////////////////////////////////////////// |
| 902 | 902 |
|
| 903 | 903 |
namespace _path_bits {
|
| 904 | 904 |
|
| 905 | 905 |
template <typename Path, typename Enable = void> |
| 906 | 906 |
struct RevPathTagIndicator {
|
| 907 | 907 |
static const bool value = false; |
| 908 | 908 |
}; |
| 909 | 909 |
|
| 910 | 910 |
template <typename Path> |
| 911 | 911 |
struct RevPathTagIndicator< |
| 912 | 912 |
Path, |
| 913 | 913 |
typename enable_if<typename Path::RevPathTag, void>::type |
| 914 | 914 |
> {
|
| 915 | 915 |
static const bool value = true; |
| 916 | 916 |
}; |
| 917 | 917 |
|
| 918 | 918 |
template <typename Path, typename Enable = void> |
| 919 | 919 |
struct BuildTagIndicator {
|
| 920 | 920 |
static const bool value = false; |
| 921 | 921 |
}; |
| 922 | 922 |
|
| 923 | 923 |
template <typename Path> |
| 924 | 924 |
struct BuildTagIndicator< |
| 925 | 925 |
Path, |
| 926 | 926 |
typename enable_if<typename Path::BuildTag, void>::type |
| 927 | 927 |
> {
|
| 928 | 928 |
static const bool value = true; |
| 929 | 929 |
}; |
| 930 | 930 |
|
| 931 | 931 |
template <typename Target, typename Source, |
| 932 |
bool buildEnable = BuildTagIndicator<Target>::value, |
|
| 933 |
bool revEnable = RevPathTagIndicator<Source>::value> |
|
| 934 |
|
|
| 932 |
bool buildEnable = BuildTagIndicator<Target>::value> |
|
| 933 |
struct PathCopySelectorForward {
|
|
| 935 | 934 |
static void copy(Target& target, const Source& source) {
|
| 936 | 935 |
target.clear(); |
| 937 | 936 |
for (typename Source::ArcIt it(source); it != INVALID; ++it) {
|
| 938 | 937 |
target.addBack(it); |
| 939 | 938 |
} |
| 940 | 939 |
} |
| 941 | 940 |
}; |
| 942 | 941 |
|
| 943 | 942 |
template <typename Target, typename Source> |
| 944 |
struct |
|
| 943 |
struct PathCopySelectorForward<Target, Source, true> {
|
|
| 944 |
static void copy(Target& target, const Source& source) {
|
|
| 945 |
target.clear(); |
|
| 946 |
target.build(source); |
|
| 947 |
} |
|
| 948 |
}; |
|
| 949 |
|
|
| 950 |
template <typename Target, typename Source, |
|
| 951 |
bool buildEnable = BuildTagIndicator<Target>::value> |
|
| 952 |
struct PathCopySelectorBackward {
|
|
| 945 | 953 |
static void copy(Target& target, const Source& source) {
|
| 946 | 954 |
target.clear(); |
| 947 | 955 |
for (typename Source::RevArcIt it(source); it != INVALID; ++it) {
|
| 948 | 956 |
target.addFront(it); |
| 949 | 957 |
} |
| 950 | 958 |
} |
| 951 | 959 |
}; |
| 952 | 960 |
|
| 953 | 961 |
template <typename Target, typename Source> |
| 954 |
struct PathCopySelector<Target, Source, true, false> {
|
|
| 955 |
static void copy(Target& target, const Source& source) {
|
|
| 956 |
target.clear(); |
|
| 957 |
target.build(source); |
|
| 958 |
} |
|
| 959 |
}; |
|
| 960 |
|
|
| 961 |
template <typename Target, typename Source> |
|
| 962 |
struct |
|
| 962 |
struct PathCopySelectorBackward<Target, Source, true> {
|
|
| 963 | 963 |
static void copy(Target& target, const Source& source) {
|
| 964 | 964 |
target.clear(); |
| 965 | 965 |
target.buildRev(source); |
| 966 | 966 |
} |
| 967 | 967 |
}; |
| 968 | 968 |
|
| 969 |
|
|
| 970 |
template <typename Target, typename Source, |
|
| 971 |
bool revEnable = RevPathTagIndicator<Source>::value> |
|
| 972 |
struct PathCopySelector {
|
|
| 973 |
static void copy(Target& target, const Source& source) {
|
|
| 974 |
PathCopySelectorForward<Target, Source>::copy(target, source); |
|
| 975 |
} |
|
| 976 |
}; |
|
| 977 |
|
|
| 978 |
template <typename Target, typename Source> |
|
| 979 |
struct PathCopySelector<Target, Source, true> {
|
|
| 980 |
static void copy(Target& target, const Source& source) {
|
|
| 981 |
PathCopySelectorBackward<Target, Source>::copy(target, source); |
|
| 982 |
} |
|
| 983 |
}; |
|
| 984 |
|
|
| 969 | 985 |
} |
| 970 | 986 |
|
| 971 | 987 |
|
| 972 | 988 |
/// \brief Make a copy of a path. |
| 973 | 989 |
/// |
| 974 | 990 |
/// This function makes a copy of a path. |
| 975 | 991 |
template <typename Target, typename Source> |
| 976 | 992 |
void copyPath(Target& target, const Source& source) {
|
| 977 | 993 |
checkConcept<concepts::PathDumper<typename Source::Digraph>, Source>(); |
| 978 | 994 |
_path_bits::PathCopySelector<Target, Source>::copy(target, source); |
| 979 | 995 |
} |
| 980 | 996 |
|
| 981 | 997 |
/// \brief Check the consistency of a path. |
| 982 | 998 |
/// |
| 983 | 999 |
/// This function checks that the target of each arc is the same |
| 984 | 1000 |
/// as the source of the next one. |
| 985 | 1001 |
/// |
| 986 | 1002 |
template <typename Digraph, typename Path> |
| 987 | 1003 |
bool checkPath(const Digraph& digraph, const Path& path) {
|
| 988 | 1004 |
typename Path::ArcIt it(path); |
| 989 | 1005 |
if (it == INVALID) return true; |
| 990 | 1006 |
typename Digraph::Node node = digraph.target(it); |
| 991 | 1007 |
++it; |
| 992 | 1008 |
while (it != INVALID) {
|
| 993 | 1009 |
if (digraph.source(it) != node) return false; |
| 994 | 1010 |
node = digraph.target(it); |
| 995 | 1011 |
++it; |
| 996 | 1012 |
} |
| 997 | 1013 |
return true; |
| 998 | 1014 |
} |
| 999 | 1015 |
|
| 1000 | 1016 |
/// \brief The source of a path |
| 1001 | 1017 |
/// |
| 1002 |
/// This function returns the source of the given path. |
|
| 1018 |
/// This function returns the source node of the given path. |
|
| 1019 |
/// If the path is empty, then it returns \c INVALID. |
|
| 1003 | 1020 |
template <typename Digraph, typename Path> |
| 1004 | 1021 |
typename Digraph::Node pathSource(const Digraph& digraph, const Path& path) {
|
| 1005 |
return digraph.source(path.front()); |
|
| 1022 |
return path.empty() ? INVALID : digraph.source(path.front()); |
|
| 1006 | 1023 |
} |
| 1007 | 1024 |
|
| 1008 | 1025 |
/// \brief The target of a path |
| 1009 | 1026 |
/// |
| 1010 |
/// This function returns the target of the given path. |
|
| 1027 |
/// This function returns the target node of the given path. |
|
| 1028 |
/// If the path is empty, then it returns \c INVALID. |
|
| 1011 | 1029 |
template <typename Digraph, typename Path> |
| 1012 | 1030 |
typename Digraph::Node pathTarget(const Digraph& digraph, const Path& path) {
|
| 1013 |
return digraph.target(path.back()); |
|
| 1031 |
return path.empty() ? INVALID : digraph.target(path.back()); |
|
| 1014 | 1032 |
} |
| 1015 | 1033 |
|
| 1016 | 1034 |
/// \brief Class which helps to iterate through the nodes of a path |
| 1017 | 1035 |
/// |
| 1018 | 1036 |
/// In a sense, the path can be treated as a list of arcs. The |
| 1019 | 1037 |
/// lemon path type stores only this list. As a consequence, it |
| 1020 | 1038 |
/// cannot enumerate the nodes in the path and the zero length paths |
| 1021 | 1039 |
/// cannot have a source node. |
| 1022 | 1040 |
/// |
| 1023 | 1041 |
/// This class implements the node iterator of a path structure. To |
| 1024 | 1042 |
/// provide this feature, the underlying digraph should be passed to |
| 1025 | 1043 |
/// the constructor of the iterator. |
| 1026 | 1044 |
template <typename Path> |
| 1027 | 1045 |
class PathNodeIt {
|
| 1028 | 1046 |
private: |
| 1029 | 1047 |
const typename Path::Digraph *_digraph; |
| 1030 | 1048 |
typename Path::ArcIt _it; |
| 1031 | 1049 |
typename Path::Digraph::Node _nd; |
| 1032 | 1050 |
|
| 1033 | 1051 |
public: |
| 1034 | 1052 |
|
| 1035 | 1053 |
typedef typename Path::Digraph Digraph; |
| 1036 | 1054 |
typedef typename Digraph::Node Node; |
| 1037 | 1055 |
|
| 1038 | 1056 |
/// Default constructor |
| 1039 | 1057 |
PathNodeIt() {}
|
| 1040 | 1058 |
/// Invalid constructor |
| 1041 | 1059 |
PathNodeIt(Invalid) |
| 1042 | 1060 |
: _digraph(0), _it(INVALID), _nd(INVALID) {}
|
| 1043 | 1061 |
/// Constructor |
| 1044 | 1062 |
PathNodeIt(const Digraph& digraph, const Path& path) |
| 1045 | 1063 |
: _digraph(&digraph), _it(path) {
|
| 1046 | 1064 |
_nd = (_it != INVALID ? _digraph->source(_it) : INVALID); |
| 1047 | 1065 |
} |
| 1048 | 1066 |
/// Constructor |
| 1049 | 1067 |
PathNodeIt(const Digraph& digraph, const Path& path, const Node& src) |
| 1050 | 1068 |
: _digraph(&digraph), _it(path), _nd(src) {}
|
| 1051 | 1069 |
|
| 1052 | 1070 |
///Conversion to Digraph::Node |
| 1053 | 1071 |
operator Node() const {
|
| 1054 | 1072 |
return _nd; |
| 1055 | 1073 |
} |
| 1056 | 1074 |
|
| 1057 | 1075 |
/// Next node |
| 1058 | 1076 |
PathNodeIt& operator++() {
|
| 1059 | 1077 |
if (_it == INVALID) _nd = INVALID; |
| 1060 | 1078 |
else {
|
| 1061 | 1079 |
_nd = _digraph->target(_it); |
| 1062 | 1080 |
++_it; |
| 1063 | 1081 |
} |
| 1064 | 1082 |
return *this; |
| 1065 | 1083 |
} |
| 1066 | 1084 |
|
| 1067 | 1085 |
/// Comparison operator |
| 1068 | 1086 |
bool operator==(const PathNodeIt& n) const {
|
| 1069 | 1087 |
return _it == n._it && _nd == n._nd; |
| 1070 | 1088 |
} |
| 1071 | 1089 |
/// Comparison operator |
| 1072 | 1090 |
bool operator!=(const PathNodeIt& n) const {
|
| 1073 | 1091 |
return _it != n._it || _nd != n._nd; |
| 1074 | 1092 |
} |
| 1075 | 1093 |
/// Comparison operator |
| 1076 | 1094 |
bool operator<(const PathNodeIt& n) const {
|
| 1077 | 1095 |
return (_it < n._it && _nd != INVALID); |
| 1078 | 1096 |
} |
| 1079 | 1097 |
|
| 1080 | 1098 |
}; |
| 1081 | 1099 |
|
| 1082 | 1100 |
///@} |
| 1083 | 1101 |
|
| 1084 | 1102 |
} // namespace lemon |
| 1085 | 1103 |
|
| 1086 | 1104 |
#endif // LEMON_PATH_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_PREFLOW_H |
| 20 | 20 |
#define LEMON_PREFLOW_H |
| 21 | 21 |
|
| 22 | 22 |
#include <lemon/tolerance.h> |
| 23 | 23 |
#include <lemon/elevator.h> |
| 24 | 24 |
|
| 25 | 25 |
/// \file |
| 26 | 26 |
/// \ingroup max_flow |
| 27 | 27 |
/// \brief Implementation of the preflow algorithm. |
| 28 | 28 |
|
| 29 | 29 |
namespace lemon {
|
| 30 | 30 |
|
| 31 | 31 |
/// \brief Default traits class of Preflow class. |
| 32 | 32 |
/// |
| 33 | 33 |
/// Default traits class of Preflow class. |
| 34 |
/// \tparam _Digraph Digraph type. |
|
| 35 |
/// \tparam _CapacityMap Capacity map type. |
|
| 36 |
|
|
| 34 |
/// \tparam GR Digraph type. |
|
| 35 |
/// \tparam CAP Capacity map type. |
|
| 36 |
template <typename GR, typename CAP> |
|
| 37 | 37 |
struct PreflowDefaultTraits {
|
| 38 | 38 |
|
| 39 | 39 |
/// \brief The type of the digraph the algorithm runs on. |
| 40 |
typedef |
|
| 40 |
typedef GR Digraph; |
|
| 41 | 41 |
|
| 42 | 42 |
/// \brief The type of the map that stores the arc capacities. |
| 43 | 43 |
/// |
| 44 | 44 |
/// The type of the map that stores the arc capacities. |
| 45 | 45 |
/// It must meet the \ref concepts::ReadMap "ReadMap" concept. |
| 46 |
typedef |
|
| 46 |
typedef CAP CapacityMap; |
|
| 47 | 47 |
|
| 48 | 48 |
/// \brief The type of the flow values. |
| 49 | 49 |
typedef typename CapacityMap::Value Value; |
| 50 | 50 |
|
| 51 | 51 |
/// \brief The type of the map that stores the flow values. |
| 52 | 52 |
/// |
| 53 | 53 |
/// The type of the map that stores the flow values. |
| 54 | 54 |
/// It must meet the \ref concepts::ReadWriteMap "ReadWriteMap" concept. |
| 55 |
#ifdef DOXYGEN |
|
| 56 |
typedef GR::ArcMap<Value> FlowMap; |
|
| 57 |
#else |
|
| 55 | 58 |
typedef typename Digraph::template ArcMap<Value> FlowMap; |
| 59 |
#endif |
|
| 56 | 60 |
|
| 57 | 61 |
/// \brief Instantiates a FlowMap. |
| 58 | 62 |
/// |
| 59 | 63 |
/// This function instantiates a \ref FlowMap. |
| 60 |
/// \param digraph The digraph |
|
| 64 |
/// \param digraph The digraph for which we would like to define |
|
| 61 | 65 |
/// the flow map. |
| 62 | 66 |
static FlowMap* createFlowMap(const Digraph& digraph) {
|
| 63 | 67 |
return new FlowMap(digraph); |
| 64 | 68 |
} |
| 65 | 69 |
|
| 66 | 70 |
/// \brief The elevator type used by Preflow algorithm. |
| 67 | 71 |
/// |
| 68 | 72 |
/// The elevator type used by Preflow algorithm. |
| 69 | 73 |
/// |
| 70 |
/// \sa Elevator |
|
| 71 |
/// \sa LinkedElevator |
|
| 72 |
|
|
| 74 |
/// \sa Elevator, LinkedElevator |
|
| 75 |
#ifdef DOXYGEN |
|
| 76 |
typedef lemon::Elevator<GR, GR::Node> Elevator; |
|
| 77 |
#else |
|
| 78 |
typedef lemon::Elevator<Digraph, typename Digraph::Node> Elevator; |
|
| 79 |
#endif |
|
| 73 | 80 |
|
| 74 | 81 |
/// \brief Instantiates an Elevator. |
| 75 | 82 |
/// |
| 76 | 83 |
/// This function instantiates an \ref Elevator. |
| 77 |
/// \param digraph The digraph |
|
| 84 |
/// \param digraph The digraph for which we would like to define |
|
| 78 | 85 |
/// the elevator. |
| 79 | 86 |
/// \param max_level The maximum level of the elevator. |
| 80 | 87 |
static Elevator* createElevator(const Digraph& digraph, int max_level) {
|
| 81 | 88 |
return new Elevator(digraph, max_level); |
| 82 | 89 |
} |
| 83 | 90 |
|
| 84 | 91 |
/// \brief The tolerance used by the algorithm |
| 85 | 92 |
/// |
| 86 | 93 |
/// The tolerance used by the algorithm to handle inexact computation. |
| 87 | 94 |
typedef lemon::Tolerance<Value> Tolerance; |
| 88 | 95 |
|
| 89 | 96 |
}; |
| 90 | 97 |
|
| 91 | 98 |
|
| 92 | 99 |
/// \ingroup max_flow |
| 93 | 100 |
/// |
| 94 | 101 |
/// \brief %Preflow algorithm class. |
| 95 | 102 |
/// |
| 96 | 103 |
/// This class provides an implementation of Goldberg-Tarjan's \e preflow |
| 97 |
/// \e push-relabel algorithm producing a flow of maximum value in a |
|
| 98 |
/// digraph. The preflow algorithms are the fastest known maximum |
|
| 99 |
/// |
|
| 104 |
/// \e push-relabel algorithm producing a \ref max_flow |
|
| 105 |
/// "flow of maximum value" in a digraph \ref clrs01algorithms, |
|
| 106 |
/// \ref amo93networkflows, \ref goldberg88newapproach. |
|
| 107 |
/// The preflow algorithms are the fastest known maximum |
|
| 108 |
/// flow algorithms. The current implementation uses a mixture of the |
|
| 100 | 109 |
/// \e "highest label" and the \e "bound decrease" heuristics. |
| 101 | 110 |
/// The worst case time complexity of the algorithm is \f$O(n^2\sqrt{e})\f$.
|
| 102 | 111 |
/// |
| 103 | 112 |
/// The algorithm consists of two phases. After the first phase |
| 104 | 113 |
/// the maximum flow value and the minimum cut is obtained. The |
| 105 | 114 |
/// second phase constructs a feasible maximum flow on each arc. |
| 106 | 115 |
/// |
| 107 |
/// \tparam _Digraph The type of the digraph the algorithm runs on. |
|
| 108 |
/// \tparam _CapacityMap The type of the capacity map. The default map |
|
| 109 |
/// type |
|
| 116 |
/// \tparam GR The type of the digraph the algorithm runs on. |
|
| 117 |
/// \tparam CAP The type of the capacity map. The default map |
|
| 118 |
/// type is \ref concepts::Digraph::ArcMap "GR::ArcMap<int>". |
|
| 110 | 119 |
#ifdef DOXYGEN |
| 111 |
template <typename |
|
| 120 |
template <typename GR, typename CAP, typename TR> |
|
| 112 | 121 |
#else |
| 113 |
template <typename _Digraph, |
|
| 114 |
typename _CapacityMap = typename _Digraph::template ArcMap<int>, |
|
| 115 |
|
|
| 122 |
template <typename GR, |
|
| 123 |
typename CAP = typename GR::template ArcMap<int>, |
|
| 124 |
typename TR = PreflowDefaultTraits<GR, CAP> > |
|
| 116 | 125 |
#endif |
| 117 | 126 |
class Preflow {
|
| 118 | 127 |
public: |
| 119 | 128 |
|
| 120 | 129 |
///The \ref PreflowDefaultTraits "traits class" of the algorithm. |
| 121 |
typedef |
|
| 130 |
typedef TR Traits; |
|
| 122 | 131 |
///The type of the digraph the algorithm runs on. |
| 123 | 132 |
typedef typename Traits::Digraph Digraph; |
| 124 | 133 |
///The type of the capacity map. |
| 125 | 134 |
typedef typename Traits::CapacityMap CapacityMap; |
| 126 | 135 |
///The type of the flow values. |
| 127 | 136 |
typedef typename Traits::Value Value; |
| 128 | 137 |
|
| 129 | 138 |
///The type of the flow map. |
| 130 | 139 |
typedef typename Traits::FlowMap FlowMap; |
| 131 | 140 |
///The type of the elevator. |
| 132 | 141 |
typedef typename Traits::Elevator Elevator; |
| 133 | 142 |
///The type of the tolerance. |
| 134 | 143 |
typedef typename Traits::Tolerance Tolerance; |
| 135 | 144 |
|
| 136 | 145 |
private: |
| 137 | 146 |
|
| 138 | 147 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 139 | 148 |
|
| 140 | 149 |
const Digraph& _graph; |
| 141 | 150 |
const CapacityMap* _capacity; |
| 142 | 151 |
|
| 143 | 152 |
int _node_num; |
| 144 | 153 |
|
| 145 | 154 |
Node _source, _target; |
| 146 | 155 |
|
| 147 | 156 |
FlowMap* _flow; |
| 148 | 157 |
bool _local_flow; |
| 149 | 158 |
|
| 150 | 159 |
Elevator* _level; |
| 151 | 160 |
bool _local_level; |
| 152 | 161 |
|
| 153 | 162 |
typedef typename Digraph::template NodeMap<Value> ExcessMap; |
| 154 | 163 |
ExcessMap* _excess; |
| 155 | 164 |
|
| 156 | 165 |
Tolerance _tolerance; |
| 157 | 166 |
|
| 158 | 167 |
bool _phase; |
| 159 | 168 |
|
| 160 | 169 |
|
| 161 | 170 |
void createStructures() {
|
| 162 | 171 |
_node_num = countNodes(_graph); |
| 163 | 172 |
|
| 164 | 173 |
if (!_flow) {
|
| 165 | 174 |
_flow = Traits::createFlowMap(_graph); |
| 166 | 175 |
_local_flow = true; |
| 167 | 176 |
} |
| 168 | 177 |
if (!_level) {
|
| 169 | 178 |
_level = Traits::createElevator(_graph, _node_num); |
| 170 | 179 |
_local_level = true; |
| 171 | 180 |
} |
| 172 | 181 |
if (!_excess) {
|
| 173 | 182 |
_excess = new ExcessMap(_graph); |
| 174 | 183 |
} |
| 175 | 184 |
} |
| 176 | 185 |
|
| 177 | 186 |
void destroyStructures() {
|
| 178 | 187 |
if (_local_flow) {
|
| 179 | 188 |
delete _flow; |
| 180 | 189 |
} |
| 181 | 190 |
if (_local_level) {
|
| 182 | 191 |
delete _level; |
| 183 | 192 |
} |
| 184 | 193 |
if (_excess) {
|
| 185 | 194 |
delete _excess; |
| 186 | 195 |
} |
| 187 | 196 |
} |
| 188 | 197 |
|
| 189 | 198 |
public: |
| 190 | 199 |
|
| 191 | 200 |
typedef Preflow Create; |
| 192 | 201 |
|
| 193 | 202 |
///\name Named Template Parameters |
| 194 | 203 |
|
| 195 | 204 |
///@{
|
| 196 | 205 |
|
| 197 |
template <typename |
|
| 206 |
template <typename T> |
|
| 198 | 207 |
struct SetFlowMapTraits : public Traits {
|
| 199 |
typedef |
|
| 208 |
typedef T FlowMap; |
|
| 200 | 209 |
static FlowMap *createFlowMap(const Digraph&) {
|
| 201 | 210 |
LEMON_ASSERT(false, "FlowMap is not initialized"); |
| 202 | 211 |
return 0; // ignore warnings |
| 203 | 212 |
} |
| 204 | 213 |
}; |
| 205 | 214 |
|
| 206 | 215 |
/// \brief \ref named-templ-param "Named parameter" for setting |
| 207 | 216 |
/// FlowMap type |
| 208 | 217 |
/// |
| 209 | 218 |
/// \ref named-templ-param "Named parameter" for setting FlowMap |
| 210 | 219 |
/// type. |
| 211 |
template <typename |
|
| 220 |
template <typename T> |
|
| 212 | 221 |
struct SetFlowMap |
| 213 |
: public Preflow<Digraph, CapacityMap, SetFlowMapTraits< |
|
| 222 |
: public Preflow<Digraph, CapacityMap, SetFlowMapTraits<T> > {
|
|
| 214 | 223 |
typedef Preflow<Digraph, CapacityMap, |
| 215 |
SetFlowMapTraits< |
|
| 224 |
SetFlowMapTraits<T> > Create; |
|
| 216 | 225 |
}; |
| 217 | 226 |
|
| 218 |
template <typename |
|
| 227 |
template <typename T> |
|
| 219 | 228 |
struct SetElevatorTraits : public Traits {
|
| 220 |
typedef |
|
| 229 |
typedef T Elevator; |
|
| 221 | 230 |
static Elevator *createElevator(const Digraph&, int) {
|
| 222 | 231 |
LEMON_ASSERT(false, "Elevator is not initialized"); |
| 223 | 232 |
return 0; // ignore warnings |
| 224 | 233 |
} |
| 225 | 234 |
}; |
| 226 | 235 |
|
| 227 | 236 |
/// \brief \ref named-templ-param "Named parameter" for setting |
| 228 | 237 |
/// Elevator type |
| 229 | 238 |
/// |
| 230 | 239 |
/// \ref named-templ-param "Named parameter" for setting Elevator |
| 231 | 240 |
/// type. If this named parameter is used, then an external |
| 232 | 241 |
/// elevator object must be passed to the algorithm using the |
| 233 | 242 |
/// \ref elevator(Elevator&) "elevator()" function before calling |
| 234 | 243 |
/// \ref run() or \ref init(). |
| 235 | 244 |
/// \sa SetStandardElevator |
| 236 |
template <typename |
|
| 245 |
template <typename T> |
|
| 237 | 246 |
struct SetElevator |
| 238 |
: public Preflow<Digraph, CapacityMap, SetElevatorTraits< |
|
| 247 |
: public Preflow<Digraph, CapacityMap, SetElevatorTraits<T> > {
|
|
| 239 | 248 |
typedef Preflow<Digraph, CapacityMap, |
| 240 |
SetElevatorTraits< |
|
| 249 |
SetElevatorTraits<T> > Create; |
|
| 241 | 250 |
}; |
| 242 | 251 |
|
| 243 |
template <typename |
|
| 252 |
template <typename T> |
|
| 244 | 253 |
struct SetStandardElevatorTraits : public Traits {
|
| 245 |
typedef |
|
| 254 |
typedef T Elevator; |
|
| 246 | 255 |
static Elevator *createElevator(const Digraph& digraph, int max_level) {
|
| 247 | 256 |
return new Elevator(digraph, max_level); |
| 248 | 257 |
} |
| 249 | 258 |
}; |
| 250 | 259 |
|
| 251 | 260 |
/// \brief \ref named-templ-param "Named parameter" for setting |
| 252 | 261 |
/// Elevator type with automatic allocation |
| 253 | 262 |
/// |
| 254 | 263 |
/// \ref named-templ-param "Named parameter" for setting Elevator |
| 255 | 264 |
/// type with automatic allocation. |
| 256 | 265 |
/// The Elevator should have standard constructor interface to be |
| 257 | 266 |
/// able to automatically created by the algorithm (i.e. the |
| 258 | 267 |
/// digraph and the maximum level should be passed to it). |
| 259 | 268 |
/// However an external elevator object could also be passed to the |
| 260 | 269 |
/// algorithm with the \ref elevator(Elevator&) "elevator()" function |
| 261 | 270 |
/// before calling \ref run() or \ref init(). |
| 262 | 271 |
/// \sa SetElevator |
| 263 |
template <typename |
|
| 272 |
template <typename T> |
|
| 264 | 273 |
struct SetStandardElevator |
| 265 | 274 |
: public Preflow<Digraph, CapacityMap, |
| 266 |
SetStandardElevatorTraits< |
|
| 275 |
SetStandardElevatorTraits<T> > {
|
|
| 267 | 276 |
typedef Preflow<Digraph, CapacityMap, |
| 268 |
SetStandardElevatorTraits< |
|
| 277 |
SetStandardElevatorTraits<T> > Create; |
|
| 269 | 278 |
}; |
| 270 | 279 |
|
| 271 | 280 |
/// @} |
| 272 | 281 |
|
| 273 | 282 |
protected: |
| 274 | 283 |
|
| 275 | 284 |
Preflow() {}
|
| 276 | 285 |
|
| 277 | 286 |
public: |
| 278 | 287 |
|
| 279 | 288 |
|
| 280 | 289 |
/// \brief The constructor of the class. |
| 281 | 290 |
/// |
| 282 | 291 |
/// The constructor of the class. |
| 283 | 292 |
/// \param digraph The digraph the algorithm runs on. |
| 284 | 293 |
/// \param capacity The capacity of the arcs. |
| 285 | 294 |
/// \param source The source node. |
| 286 | 295 |
/// \param target The target node. |
| 287 | 296 |
Preflow(const Digraph& digraph, const CapacityMap& capacity, |
| 288 | 297 |
Node source, Node target) |
| 289 | 298 |
: _graph(digraph), _capacity(&capacity), |
| 290 | 299 |
_node_num(0), _source(source), _target(target), |
| 291 | 300 |
_flow(0), _local_flow(false), |
| 292 | 301 |
_level(0), _local_level(false), |
| 293 | 302 |
_excess(0), _tolerance(), _phase() {}
|
| 294 | 303 |
|
| 295 | 304 |
/// \brief Destructor. |
| 296 | 305 |
/// |
| 297 | 306 |
/// Destructor. |
| 298 | 307 |
~Preflow() {
|
| 299 | 308 |
destroyStructures(); |
| 300 | 309 |
} |
| 301 | 310 |
|
| 302 | 311 |
/// \brief Sets the capacity map. |
| 303 | 312 |
/// |
| 304 | 313 |
/// Sets the capacity map. |
| 305 | 314 |
/// \return <tt>(*this)</tt> |
| 306 | 315 |
Preflow& capacityMap(const CapacityMap& map) {
|
| 307 | 316 |
_capacity = ↦ |
| 308 | 317 |
return *this; |
| 309 | 318 |
} |
| 310 | 319 |
|
| 311 | 320 |
/// \brief Sets the flow map. |
| 312 | 321 |
/// |
| 313 | 322 |
/// Sets the flow map. |
| 314 | 323 |
/// If you don't use this function before calling \ref run() or |
| 315 | 324 |
/// \ref init(), an instance will be allocated automatically. |
| 316 | 325 |
/// The destructor deallocates this automatically allocated map, |
| 317 | 326 |
/// of course. |
| 318 | 327 |
/// \return <tt>(*this)</tt> |
| 319 | 328 |
Preflow& flowMap(FlowMap& map) {
|
| 320 | 329 |
if (_local_flow) {
|
| 321 | 330 |
delete _flow; |
| 322 | 331 |
_local_flow = false; |
| 323 | 332 |
} |
| 324 | 333 |
_flow = ↦ |
| 325 | 334 |
return *this; |
| 326 | 335 |
} |
| 327 | 336 |
|
| 328 | 337 |
/// \brief Sets the source node. |
| 329 | 338 |
/// |
| 330 | 339 |
/// Sets the source node. |
| 331 | 340 |
/// \return <tt>(*this)</tt> |
| 332 | 341 |
Preflow& source(const Node& node) {
|
| 333 | 342 |
_source = node; |
| 334 | 343 |
return *this; |
| 335 | 344 |
} |
| 336 | 345 |
|
| 337 | 346 |
/// \brief Sets the target node. |
| 338 | 347 |
/// |
| 339 | 348 |
/// Sets the target node. |
| 340 | 349 |
/// \return <tt>(*this)</tt> |
| 341 | 350 |
Preflow& target(const Node& node) {
|
| 342 | 351 |
_target = node; |
| 343 | 352 |
return *this; |
| 344 | 353 |
} |
| 345 | 354 |
|
| 346 | 355 |
/// \brief Sets the elevator used by algorithm. |
| 347 | 356 |
/// |
| 348 | 357 |
/// Sets the elevator used by algorithm. |
| 349 | 358 |
/// If you don't use this function before calling \ref run() or |
| 350 | 359 |
/// \ref init(), an instance will be allocated automatically. |
| 351 | 360 |
/// The destructor deallocates this automatically allocated elevator, |
| 352 | 361 |
/// of course. |
| 353 | 362 |
/// \return <tt>(*this)</tt> |
| 354 | 363 |
Preflow& elevator(Elevator& elevator) {
|
| 355 | 364 |
if (_local_level) {
|
| 356 | 365 |
delete _level; |
| 357 | 366 |
_local_level = false; |
| 358 | 367 |
} |
| 359 | 368 |
_level = &elevator; |
| 360 | 369 |
return *this; |
| 361 | 370 |
} |
| 362 | 371 |
|
| 363 | 372 |
/// \brief Returns a const reference to the elevator. |
| 364 | 373 |
/// |
| 365 | 374 |
/// Returns a const reference to the elevator. |
| 366 | 375 |
/// |
| 367 | 376 |
/// \pre Either \ref run() or \ref init() must be called before |
| 368 | 377 |
/// using this function. |
| 369 | 378 |
const Elevator& elevator() const {
|
| 370 | 379 |
return *_level; |
| 371 | 380 |
} |
| 372 | 381 |
|
| 373 |
/// \brief Sets the tolerance used by algorithm. |
|
| 382 |
/// \brief Sets the tolerance used by the algorithm. |
|
| 374 | 383 |
/// |
| 375 |
/// Sets the tolerance used by algorithm. |
|
| 376 |
Preflow& tolerance(const Tolerance& tolerance) const {
|
|
| 384 |
/// Sets the tolerance object used by the algorithm. |
|
| 385 |
/// \return <tt>(*this)</tt> |
|
| 386 |
Preflow& tolerance(const Tolerance& tolerance) {
|
|
| 377 | 387 |
_tolerance = tolerance; |
| 378 | 388 |
return *this; |
| 379 | 389 |
} |
| 380 | 390 |
|
| 381 | 391 |
/// \brief Returns a const reference to the tolerance. |
| 382 | 392 |
/// |
| 383 |
/// Returns a const reference to the tolerance |
|
| 393 |
/// Returns a const reference to the tolerance object used by |
|
| 394 |
/// the algorithm. |
|
| 384 | 395 |
const Tolerance& tolerance() const {
|
| 385 |
return |
|
| 396 |
return _tolerance; |
|
| 386 | 397 |
} |
| 387 | 398 |
|
| 388 | 399 |
/// \name Execution Control |
| 389 | 400 |
/// The simplest way to execute the preflow algorithm is to use |
| 390 | 401 |
/// \ref run() or \ref runMinCut().\n |
| 391 |
/// If you need more control on the initial solution or the execution, |
|
| 392 |
/// first you have to call one of the \ref init() functions, then |
|
| 402 |
/// If you need better control on the initial solution or the execution, |
|
| 403 |
/// you have to call one of the \ref init() functions first, then |
|
| 393 | 404 |
/// \ref startFirstPhase() and if you need it \ref startSecondPhase(). |
| 394 | 405 |
|
| 395 | 406 |
///@{
|
| 396 | 407 |
|
| 397 | 408 |
/// \brief Initializes the internal data structures. |
| 398 | 409 |
/// |
| 399 | 410 |
/// Initializes the internal data structures and sets the initial |
| 400 | 411 |
/// flow to zero on each arc. |
| 401 | 412 |
void init() {
|
| 402 | 413 |
createStructures(); |
| 403 | 414 |
|
| 404 | 415 |
_phase = true; |
| 405 | 416 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 406 |
_excess |
|
| 417 |
(*_excess)[n] = 0; |
|
| 407 | 418 |
} |
| 408 | 419 |
|
| 409 | 420 |
for (ArcIt e(_graph); e != INVALID; ++e) {
|
| 410 | 421 |
_flow->set(e, 0); |
| 411 | 422 |
} |
| 412 | 423 |
|
| 413 | 424 |
typename Digraph::template NodeMap<bool> reached(_graph, false); |
| 414 | 425 |
|
| 415 | 426 |
_level->initStart(); |
| 416 | 427 |
_level->initAddItem(_target); |
| 417 | 428 |
|
| 418 | 429 |
std::vector<Node> queue; |
| 419 |
reached |
|
| 430 |
reached[_source] = true; |
|
| 420 | 431 |
|
| 421 | 432 |
queue.push_back(_target); |
| 422 |
reached |
|
| 433 |
reached[_target] = true; |
|
| 423 | 434 |
while (!queue.empty()) {
|
| 424 | 435 |
_level->initNewLevel(); |
| 425 | 436 |
std::vector<Node> nqueue; |
| 426 | 437 |
for (int i = 0; i < int(queue.size()); ++i) {
|
| 427 | 438 |
Node n = queue[i]; |
| 428 | 439 |
for (InArcIt e(_graph, n); e != INVALID; ++e) {
|
| 429 | 440 |
Node u = _graph.source(e); |
| 430 | 441 |
if (!reached[u] && _tolerance.positive((*_capacity)[e])) {
|
| 431 |
reached |
|
| 442 |
reached[u] = true; |
|
| 432 | 443 |
_level->initAddItem(u); |
| 433 | 444 |
nqueue.push_back(u); |
| 434 | 445 |
} |
| 435 | 446 |
} |
| 436 | 447 |
} |
| 437 | 448 |
queue.swap(nqueue); |
| 438 | 449 |
} |
| 439 | 450 |
_level->initFinish(); |
| 440 | 451 |
|
| 441 | 452 |
for (OutArcIt e(_graph, _source); e != INVALID; ++e) {
|
| 442 | 453 |
if (_tolerance.positive((*_capacity)[e])) {
|
| 443 | 454 |
Node u = _graph.target(e); |
| 444 | 455 |
if ((*_level)[u] == _level->maxLevel()) continue; |
| 445 | 456 |
_flow->set(e, (*_capacity)[e]); |
| 446 |
|
|
| 457 |
(*_excess)[u] += (*_capacity)[e]; |
|
| 447 | 458 |
if (u != _target && !_level->active(u)) {
|
| 448 | 459 |
_level->activate(u); |
| 449 | 460 |
} |
| 450 | 461 |
} |
| 451 | 462 |
} |
| 452 | 463 |
} |
| 453 | 464 |
|
| 454 | 465 |
/// \brief Initializes the internal data structures using the |
| 455 | 466 |
/// given flow map. |
| 456 | 467 |
/// |
| 457 | 468 |
/// Initializes the internal data structures and sets the initial |
| 458 | 469 |
/// flow to the given \c flowMap. The \c flowMap should contain a |
| 459 | 470 |
/// flow or at least a preflow, i.e. at each node excluding the |
| 460 | 471 |
/// source node the incoming flow should greater or equal to the |
| 461 | 472 |
/// outgoing flow. |
| 462 | 473 |
/// \return \c false if the given \c flowMap is not a preflow. |
| 463 | 474 |
template <typename FlowMap> |
| 464 | 475 |
bool init(const FlowMap& flowMap) {
|
| 465 | 476 |
createStructures(); |
| 466 | 477 |
|
| 467 | 478 |
for (ArcIt e(_graph); e != INVALID; ++e) {
|
| 468 | 479 |
_flow->set(e, flowMap[e]); |
| 469 | 480 |
} |
| 470 | 481 |
|
| 471 | 482 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 472 | 483 |
Value excess = 0; |
| 473 | 484 |
for (InArcIt e(_graph, n); e != INVALID; ++e) {
|
| 474 | 485 |
excess += (*_flow)[e]; |
| 475 | 486 |
} |
| 476 | 487 |
for (OutArcIt e(_graph, n); e != INVALID; ++e) {
|
| 477 | 488 |
excess -= (*_flow)[e]; |
| 478 | 489 |
} |
| 479 | 490 |
if (excess < 0 && n != _source) return false; |
| 480 |
_excess |
|
| 491 |
(*_excess)[n] = excess; |
|
| 481 | 492 |
} |
| 482 | 493 |
|
| 483 | 494 |
typename Digraph::template NodeMap<bool> reached(_graph, false); |
| 484 | 495 |
|
| 485 | 496 |
_level->initStart(); |
| 486 | 497 |
_level->initAddItem(_target); |
| 487 | 498 |
|
| 488 | 499 |
std::vector<Node> queue; |
| 489 |
reached |
|
| 500 |
reached[_source] = true; |
|
| 490 | 501 |
|
| 491 | 502 |
queue.push_back(_target); |
| 492 |
reached |
|
| 503 |
reached[_target] = true; |
|
| 493 | 504 |
while (!queue.empty()) {
|
| 494 | 505 |
_level->initNewLevel(); |
| 495 | 506 |
std::vector<Node> nqueue; |
| 496 | 507 |
for (int i = 0; i < int(queue.size()); ++i) {
|
| 497 | 508 |
Node n = queue[i]; |
| 498 | 509 |
for (InArcIt e(_graph, n); e != INVALID; ++e) {
|
| 499 | 510 |
Node u = _graph.source(e); |
| 500 | 511 |
if (!reached[u] && |
| 501 | 512 |
_tolerance.positive((*_capacity)[e] - (*_flow)[e])) {
|
| 502 |
reached |
|
| 513 |
reached[u] = true; |
|
| 503 | 514 |
_level->initAddItem(u); |
| 504 | 515 |
nqueue.push_back(u); |
| 505 | 516 |
} |
| 506 | 517 |
} |
| 507 | 518 |
for (OutArcIt e(_graph, n); e != INVALID; ++e) {
|
| 508 | 519 |
Node v = _graph.target(e); |
| 509 | 520 |
if (!reached[v] && _tolerance.positive((*_flow)[e])) {
|
| 510 |
reached |
|
| 521 |
reached[v] = true; |
|
| 511 | 522 |
_level->initAddItem(v); |
| 512 | 523 |
nqueue.push_back(v); |
| 513 | 524 |
} |
| 514 | 525 |
} |
| 515 | 526 |
} |
| 516 | 527 |
queue.swap(nqueue); |
| 517 | 528 |
} |
| 518 | 529 |
_level->initFinish(); |
| 519 | 530 |
|
| 520 | 531 |
for (OutArcIt e(_graph, _source); e != INVALID; ++e) {
|
| 521 | 532 |
Value rem = (*_capacity)[e] - (*_flow)[e]; |
| 522 | 533 |
if (_tolerance.positive(rem)) {
|
| 523 | 534 |
Node u = _graph.target(e); |
| 524 | 535 |
if ((*_level)[u] == _level->maxLevel()) continue; |
| 525 | 536 |
_flow->set(e, (*_capacity)[e]); |
| 526 |
|
|
| 537 |
(*_excess)[u] += rem; |
|
| 527 | 538 |
if (u != _target && !_level->active(u)) {
|
| 528 | 539 |
_level->activate(u); |
| 529 | 540 |
} |
| 530 | 541 |
} |
| 531 | 542 |
} |
| 532 | 543 |
for (InArcIt e(_graph, _source); e != INVALID; ++e) {
|
| 533 | 544 |
Value rem = (*_flow)[e]; |
| 534 | 545 |
if (_tolerance.positive(rem)) {
|
| 535 | 546 |
Node v = _graph.source(e); |
| 536 | 547 |
if ((*_level)[v] == _level->maxLevel()) continue; |
| 537 | 548 |
_flow->set(e, 0); |
| 538 |
|
|
| 549 |
(*_excess)[v] += rem; |
|
| 539 | 550 |
if (v != _target && !_level->active(v)) {
|
| 540 | 551 |
_level->activate(v); |
| 541 | 552 |
} |
| 542 | 553 |
} |
| 543 | 554 |
} |
| 544 | 555 |
return true; |
| 545 | 556 |
} |
| 546 | 557 |
|
| 547 | 558 |
/// \brief Starts the first phase of the preflow algorithm. |
| 548 | 559 |
/// |
| 549 | 560 |
/// The preflow algorithm consists of two phases, this method runs |
| 550 | 561 |
/// the first phase. After the first phase the maximum flow value |
| 551 | 562 |
/// and a minimum value cut can already be computed, although a |
| 552 | 563 |
/// maximum flow is not yet obtained. So after calling this method |
| 553 | 564 |
/// \ref flowValue() returns the value of a maximum flow and \ref |
| 554 | 565 |
/// minCut() returns a minimum cut. |
| 555 | 566 |
/// \pre One of the \ref init() functions must be called before |
| 556 | 567 |
/// using this function. |
| 557 | 568 |
void startFirstPhase() {
|
| 558 | 569 |
_phase = true; |
| 559 | 570 |
|
| 560 | 571 |
Node n = _level->highestActive(); |
| 561 | 572 |
int level = _level->highestActiveLevel(); |
| 562 | 573 |
while (n != INVALID) {
|
| 563 | 574 |
int num = _node_num; |
| 564 | 575 |
|
| 565 | 576 |
while (num > 0 && n != INVALID) {
|
| 566 | 577 |
Value excess = (*_excess)[n]; |
| 567 | 578 |
int new_level = _level->maxLevel(); |
| 568 | 579 |
|
| 569 | 580 |
for (OutArcIt e(_graph, n); e != INVALID; ++e) {
|
| 570 | 581 |
Value rem = (*_capacity)[e] - (*_flow)[e]; |
| 571 | 582 |
if (!_tolerance.positive(rem)) continue; |
| 572 | 583 |
Node v = _graph.target(e); |
| 573 | 584 |
if ((*_level)[v] < level) {
|
| 574 | 585 |
if (!_level->active(v) && v != _target) {
|
| 575 | 586 |
_level->activate(v); |
| 576 | 587 |
} |
| 577 | 588 |
if (!_tolerance.less(rem, excess)) {
|
| 578 | 589 |
_flow->set(e, (*_flow)[e] + excess); |
| 579 |
|
|
| 590 |
(*_excess)[v] += excess; |
|
| 580 | 591 |
excess = 0; |
| 581 | 592 |
goto no_more_push_1; |
| 582 | 593 |
} else {
|
| 583 | 594 |
excess -= rem; |
| 584 |
|
|
| 595 |
(*_excess)[v] += rem; |
|
| 585 | 596 |
_flow->set(e, (*_capacity)[e]); |
| 586 | 597 |
} |
| 587 | 598 |
} else if (new_level > (*_level)[v]) {
|
| 588 | 599 |
new_level = (*_level)[v]; |
| 589 | 600 |
} |
| 590 | 601 |
} |
| 591 | 602 |
|
| 592 | 603 |
for (InArcIt e(_graph, n); e != INVALID; ++e) {
|
| 593 | 604 |
Value rem = (*_flow)[e]; |
| 594 | 605 |
if (!_tolerance.positive(rem)) continue; |
| 595 | 606 |
Node v = _graph.source(e); |
| 596 | 607 |
if ((*_level)[v] < level) {
|
| 597 | 608 |
if (!_level->active(v) && v != _target) {
|
| 598 | 609 |
_level->activate(v); |
| 599 | 610 |
} |
| 600 | 611 |
if (!_tolerance.less(rem, excess)) {
|
| 601 | 612 |
_flow->set(e, (*_flow)[e] - excess); |
| 602 |
|
|
| 613 |
(*_excess)[v] += excess; |
|
| 603 | 614 |
excess = 0; |
| 604 | 615 |
goto no_more_push_1; |
| 605 | 616 |
} else {
|
| 606 | 617 |
excess -= rem; |
| 607 |
|
|
| 618 |
(*_excess)[v] += rem; |
|
| 608 | 619 |
_flow->set(e, 0); |
| 609 | 620 |
} |
| 610 | 621 |
} else if (new_level > (*_level)[v]) {
|
| 611 | 622 |
new_level = (*_level)[v]; |
| 612 | 623 |
} |
| 613 | 624 |
} |
| 614 | 625 |
|
| 615 | 626 |
no_more_push_1: |
| 616 | 627 |
|
| 617 |
_excess |
|
| 628 |
(*_excess)[n] = excess; |
|
| 618 | 629 |
|
| 619 | 630 |
if (excess != 0) {
|
| 620 | 631 |
if (new_level + 1 < _level->maxLevel()) {
|
| 621 | 632 |
_level->liftHighestActive(new_level + 1); |
| 622 | 633 |
} else {
|
| 623 | 634 |
_level->liftHighestActiveToTop(); |
| 624 | 635 |
} |
| 625 | 636 |
if (_level->emptyLevel(level)) {
|
| 626 | 637 |
_level->liftToTop(level); |
| 627 | 638 |
} |
| 628 | 639 |
} else {
|
| 629 | 640 |
_level->deactivate(n); |
| 630 | 641 |
} |
| 631 | 642 |
|
| 632 | 643 |
n = _level->highestActive(); |
| 633 | 644 |
level = _level->highestActiveLevel(); |
| 634 | 645 |
--num; |
| 635 | 646 |
} |
| 636 | 647 |
|
| 637 | 648 |
num = _node_num * 20; |
| 638 | 649 |
while (num > 0 && n != INVALID) {
|
| 639 | 650 |
Value excess = (*_excess)[n]; |
| 640 | 651 |
int new_level = _level->maxLevel(); |
| 641 | 652 |
|
| 642 | 653 |
for (OutArcIt e(_graph, n); e != INVALID; ++e) {
|
| 643 | 654 |
Value rem = (*_capacity)[e] - (*_flow)[e]; |
| 644 | 655 |
if (!_tolerance.positive(rem)) continue; |
| 645 | 656 |
Node v = _graph.target(e); |
| 646 | 657 |
if ((*_level)[v] < level) {
|
| 647 | 658 |
if (!_level->active(v) && v != _target) {
|
| 648 | 659 |
_level->activate(v); |
| 649 | 660 |
} |
| 650 | 661 |
if (!_tolerance.less(rem, excess)) {
|
| 651 | 662 |
_flow->set(e, (*_flow)[e] + excess); |
| 652 |
|
|
| 663 |
(*_excess)[v] += excess; |
|
| 653 | 664 |
excess = 0; |
| 654 | 665 |
goto no_more_push_2; |
| 655 | 666 |
} else {
|
| 656 | 667 |
excess -= rem; |
| 657 |
|
|
| 668 |
(*_excess)[v] += rem; |
|
| 658 | 669 |
_flow->set(e, (*_capacity)[e]); |
| 659 | 670 |
} |
| 660 | 671 |
} else if (new_level > (*_level)[v]) {
|
| 661 | 672 |
new_level = (*_level)[v]; |
| 662 | 673 |
} |
| 663 | 674 |
} |
| 664 | 675 |
|
| 665 | 676 |
for (InArcIt e(_graph, n); e != INVALID; ++e) {
|
| 666 | 677 |
Value rem = (*_flow)[e]; |
| 667 | 678 |
if (!_tolerance.positive(rem)) continue; |
| 668 | 679 |
Node v = _graph.source(e); |
| 669 | 680 |
if ((*_level)[v] < level) {
|
| 670 | 681 |
if (!_level->active(v) && v != _target) {
|
| 671 | 682 |
_level->activate(v); |
| 672 | 683 |
} |
| 673 | 684 |
if (!_tolerance.less(rem, excess)) {
|
| 674 | 685 |
_flow->set(e, (*_flow)[e] - excess); |
| 675 |
|
|
| 686 |
(*_excess)[v] += excess; |
|
| 676 | 687 |
excess = 0; |
| 677 | 688 |
goto no_more_push_2; |
| 678 | 689 |
} else {
|
| 679 | 690 |
excess -= rem; |
| 680 |
|
|
| 691 |
(*_excess)[v] += rem; |
|
| 681 | 692 |
_flow->set(e, 0); |
| 682 | 693 |
} |
| 683 | 694 |
} else if (new_level > (*_level)[v]) {
|
| 684 | 695 |
new_level = (*_level)[v]; |
| 685 | 696 |
} |
| 686 | 697 |
} |
| 687 | 698 |
|
| 688 | 699 |
no_more_push_2: |
| 689 | 700 |
|
| 690 |
_excess |
|
| 701 |
(*_excess)[n] = excess; |
|
| 691 | 702 |
|
| 692 | 703 |
if (excess != 0) {
|
| 693 | 704 |
if (new_level + 1 < _level->maxLevel()) {
|
| 694 | 705 |
_level->liftActiveOn(level, new_level + 1); |
| 695 | 706 |
} else {
|
| 696 | 707 |
_level->liftActiveToTop(level); |
| 697 | 708 |
} |
| 698 | 709 |
if (_level->emptyLevel(level)) {
|
| 699 | 710 |
_level->liftToTop(level); |
| 700 | 711 |
} |
| 701 | 712 |
} else {
|
| 702 | 713 |
_level->deactivate(n); |
| 703 | 714 |
} |
| 704 | 715 |
|
| 705 | 716 |
while (level >= 0 && _level->activeFree(level)) {
|
| 706 | 717 |
--level; |
| 707 | 718 |
} |
| 708 | 719 |
if (level == -1) {
|
| 709 | 720 |
n = _level->highestActive(); |
| 710 | 721 |
level = _level->highestActiveLevel(); |
| 711 | 722 |
} else {
|
| 712 | 723 |
n = _level->activeOn(level); |
| 713 | 724 |
} |
| 714 | 725 |
--num; |
| 715 | 726 |
} |
| 716 | 727 |
} |
| 717 | 728 |
} |
| 718 | 729 |
|
| 719 | 730 |
/// \brief Starts the second phase of the preflow algorithm. |
| 720 | 731 |
/// |
| 721 | 732 |
/// The preflow algorithm consists of two phases, this method runs |
| 722 | 733 |
/// the second phase. After calling one of the \ref init() functions |
| 723 | 734 |
/// and \ref startFirstPhase() and then \ref startSecondPhase(), |
| 724 | 735 |
/// \ref flowMap() returns a maximum flow, \ref flowValue() returns the |
| 725 | 736 |
/// value of a maximum flow, \ref minCut() returns a minimum cut |
| 726 | 737 |
/// \pre One of the \ref init() functions and \ref startFirstPhase() |
| 727 | 738 |
/// must be called before using this function. |
| 728 | 739 |
void startSecondPhase() {
|
| 729 | 740 |
_phase = false; |
| 730 | 741 |
|
| 731 | 742 |
typename Digraph::template NodeMap<bool> reached(_graph); |
| 732 | 743 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 733 |
reached |
|
| 744 |
reached[n] = (*_level)[n] < _level->maxLevel(); |
|
| 734 | 745 |
} |
| 735 | 746 |
|
| 736 | 747 |
_level->initStart(); |
| 737 | 748 |
_level->initAddItem(_source); |
| 738 | 749 |
|
| 739 | 750 |
std::vector<Node> queue; |
| 740 | 751 |
queue.push_back(_source); |
| 741 |
reached |
|
| 752 |
reached[_source] = true; |
|
| 742 | 753 |
|
| 743 | 754 |
while (!queue.empty()) {
|
| 744 | 755 |
_level->initNewLevel(); |
| 745 | 756 |
std::vector<Node> nqueue; |
| 746 | 757 |
for (int i = 0; i < int(queue.size()); ++i) {
|
| 747 | 758 |
Node n = queue[i]; |
| 748 | 759 |
for (OutArcIt e(_graph, n); e != INVALID; ++e) {
|
| 749 | 760 |
Node v = _graph.target(e); |
| 750 | 761 |
if (!reached[v] && _tolerance.positive((*_flow)[e])) {
|
| 751 |
reached |
|
| 762 |
reached[v] = true; |
|
| 752 | 763 |
_level->initAddItem(v); |
| 753 | 764 |
nqueue.push_back(v); |
| 754 | 765 |
} |
| 755 | 766 |
} |
| 756 | 767 |
for (InArcIt e(_graph, n); e != INVALID; ++e) {
|
| 757 | 768 |
Node u = _graph.source(e); |
| 758 | 769 |
if (!reached[u] && |
| 759 | 770 |
_tolerance.positive((*_capacity)[e] - (*_flow)[e])) {
|
| 760 |
reached |
|
| 771 |
reached[u] = true; |
|
| 761 | 772 |
_level->initAddItem(u); |
| 762 | 773 |
nqueue.push_back(u); |
| 763 | 774 |
} |
| 764 | 775 |
} |
| 765 | 776 |
} |
| 766 | 777 |
queue.swap(nqueue); |
| 767 | 778 |
} |
| 768 | 779 |
_level->initFinish(); |
| 769 | 780 |
|
| 770 | 781 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 771 | 782 |
if (!reached[n]) {
|
| 772 | 783 |
_level->dirtyTopButOne(n); |
| 773 | 784 |
} else if ((*_excess)[n] > 0 && _target != n) {
|
| 774 | 785 |
_level->activate(n); |
| 775 | 786 |
} |
| 776 | 787 |
} |
| 777 | 788 |
|
| 778 | 789 |
Node n; |
| 779 | 790 |
while ((n = _level->highestActive()) != INVALID) {
|
| 780 | 791 |
Value excess = (*_excess)[n]; |
| 781 | 792 |
int level = _level->highestActiveLevel(); |
| 782 | 793 |
int new_level = _level->maxLevel(); |
| 783 | 794 |
|
| 784 | 795 |
for (OutArcIt e(_graph, n); e != INVALID; ++e) {
|
| 785 | 796 |
Value rem = (*_capacity)[e] - (*_flow)[e]; |
| 786 | 797 |
if (!_tolerance.positive(rem)) continue; |
| 787 | 798 |
Node v = _graph.target(e); |
| 788 | 799 |
if ((*_level)[v] < level) {
|
| 789 | 800 |
if (!_level->active(v) && v != _source) {
|
| 790 | 801 |
_level->activate(v); |
| 791 | 802 |
} |
| 792 | 803 |
if (!_tolerance.less(rem, excess)) {
|
| 793 | 804 |
_flow->set(e, (*_flow)[e] + excess); |
| 794 |
|
|
| 805 |
(*_excess)[v] += excess; |
|
| 795 | 806 |
excess = 0; |
| 796 | 807 |
goto no_more_push; |
| 797 | 808 |
} else {
|
| 798 | 809 |
excess -= rem; |
| 799 |
|
|
| 810 |
(*_excess)[v] += rem; |
|
| 800 | 811 |
_flow->set(e, (*_capacity)[e]); |
| 801 | 812 |
} |
| 802 | 813 |
} else if (new_level > (*_level)[v]) {
|
| 803 | 814 |
new_level = (*_level)[v]; |
| 804 | 815 |
} |
| 805 | 816 |
} |
| 806 | 817 |
|
| 807 | 818 |
for (InArcIt e(_graph, n); e != INVALID; ++e) {
|
| 808 | 819 |
Value rem = (*_flow)[e]; |
| 809 | 820 |
if (!_tolerance.positive(rem)) continue; |
| 810 | 821 |
Node v = _graph.source(e); |
| 811 | 822 |
if ((*_level)[v] < level) {
|
| 812 | 823 |
if (!_level->active(v) && v != _source) {
|
| 813 | 824 |
_level->activate(v); |
| 814 | 825 |
} |
| 815 | 826 |
if (!_tolerance.less(rem, excess)) {
|
| 816 | 827 |
_flow->set(e, (*_flow)[e] - excess); |
| 817 |
|
|
| 828 |
(*_excess)[v] += excess; |
|
| 818 | 829 |
excess = 0; |
| 819 | 830 |
goto no_more_push; |
| 820 | 831 |
} else {
|
| 821 | 832 |
excess -= rem; |
| 822 |
|
|
| 833 |
(*_excess)[v] += rem; |
|
| 823 | 834 |
_flow->set(e, 0); |
| 824 | 835 |
} |
| 825 | 836 |
} else if (new_level > (*_level)[v]) {
|
| 826 | 837 |
new_level = (*_level)[v]; |
| 827 | 838 |
} |
| 828 | 839 |
} |
| 829 | 840 |
|
| 830 | 841 |
no_more_push: |
| 831 | 842 |
|
| 832 |
_excess |
|
| 843 |
(*_excess)[n] = excess; |
|
| 833 | 844 |
|
| 834 | 845 |
if (excess != 0) {
|
| 835 | 846 |
if (new_level + 1 < _level->maxLevel()) {
|
| 836 | 847 |
_level->liftHighestActive(new_level + 1); |
| 837 | 848 |
} else {
|
| 838 | 849 |
// Calculation error |
| 839 | 850 |
_level->liftHighestActiveToTop(); |
| 840 | 851 |
} |
| 841 | 852 |
if (_level->emptyLevel(level)) {
|
| 842 | 853 |
// Calculation error |
| 843 | 854 |
_level->liftToTop(level); |
| 844 | 855 |
} |
| 845 | 856 |
} else {
|
| 846 | 857 |
_level->deactivate(n); |
| 847 | 858 |
} |
| 848 | 859 |
|
| 849 | 860 |
} |
| 850 | 861 |
} |
| 851 | 862 |
|
| 852 | 863 |
/// \brief Runs the preflow algorithm. |
| 853 | 864 |
/// |
| 854 | 865 |
/// Runs the preflow algorithm. |
| 855 | 866 |
/// \note pf.run() is just a shortcut of the following code. |
| 856 | 867 |
/// \code |
| 857 | 868 |
/// pf.init(); |
| 858 | 869 |
/// pf.startFirstPhase(); |
| 859 | 870 |
/// pf.startSecondPhase(); |
| 860 | 871 |
/// \endcode |
| 861 | 872 |
void run() {
|
| 862 | 873 |
init(); |
| 863 | 874 |
startFirstPhase(); |
| 864 | 875 |
startSecondPhase(); |
| 865 | 876 |
} |
| 866 | 877 |
|
| 867 | 878 |
/// \brief Runs the preflow algorithm to compute the minimum cut. |
| 868 | 879 |
/// |
| 869 | 880 |
/// Runs the preflow algorithm to compute the minimum cut. |
| 870 | 881 |
/// \note pf.runMinCut() is just a shortcut of the following code. |
| 871 | 882 |
/// \code |
| 872 | 883 |
/// pf.init(); |
| 873 | 884 |
/// pf.startFirstPhase(); |
| 874 | 885 |
/// \endcode |
| 875 | 886 |
void runMinCut() {
|
| 876 | 887 |
init(); |
| 877 | 888 |
startFirstPhase(); |
| 878 | 889 |
} |
| 879 | 890 |
|
| 880 | 891 |
/// @} |
| 881 | 892 |
|
| 882 | 893 |
/// \name Query Functions |
| 883 | 894 |
/// The results of the preflow algorithm can be obtained using these |
| 884 | 895 |
/// functions.\n |
| 885 | 896 |
/// Either one of the \ref run() "run*()" functions or one of the |
| 886 | 897 |
/// \ref startFirstPhase() "start*()" functions should be called |
| 887 | 898 |
/// before using them. |
| 888 | 899 |
|
| 889 | 900 |
///@{
|
| 890 | 901 |
|
| 891 | 902 |
/// \brief Returns the value of the maximum flow. |
| 892 | 903 |
/// |
| 893 | 904 |
/// Returns the value of the maximum flow by returning the excess |
| 894 | 905 |
/// of the target node. This value equals to the value of |
| 895 | 906 |
/// the maximum flow already after the first phase of the algorithm. |
| 896 | 907 |
/// |
| 897 | 908 |
/// \pre Either \ref run() or \ref init() must be called before |
| 898 | 909 |
/// using this function. |
| 899 | 910 |
Value flowValue() const {
|
| 900 | 911 |
return (*_excess)[_target]; |
| 901 | 912 |
} |
| 902 | 913 |
|
| 903 |
/// \brief Returns the flow on the given arc. |
|
| 914 |
/// \brief Returns the flow value on the given arc. |
|
| 904 | 915 |
/// |
| 905 |
/// Returns the flow on the given arc. This method can |
|
| 916 |
/// Returns the flow value on the given arc. This method can |
|
| 906 | 917 |
/// be called after the second phase of the algorithm. |
| 907 | 918 |
/// |
| 908 | 919 |
/// \pre Either \ref run() or \ref init() must be called before |
| 909 | 920 |
/// using this function. |
| 910 | 921 |
Value flow(const Arc& arc) const {
|
| 911 | 922 |
return (*_flow)[arc]; |
| 912 | 923 |
} |
| 913 | 924 |
|
| 914 | 925 |
/// \brief Returns a const reference to the flow map. |
| 915 | 926 |
/// |
| 916 | 927 |
/// Returns a const reference to the arc map storing the found flow. |
| 917 | 928 |
/// This method can be called after the second phase of the algorithm. |
| 918 | 929 |
/// |
| 919 | 930 |
/// \pre Either \ref run() or \ref init() must be called before |
| 920 | 931 |
/// using this function. |
| 921 | 932 |
const FlowMap& flowMap() const {
|
| 922 | 933 |
return *_flow; |
| 923 | 934 |
} |
| 924 | 935 |
|
| 925 | 936 |
/// \brief Returns \c true when the node is on the source side of the |
| 926 | 937 |
/// minimum cut. |
| 927 | 938 |
/// |
| 928 | 939 |
/// Returns true when the node is on the source side of the found |
| 929 | 940 |
/// minimum cut. This method can be called both after running \ref |
| 930 | 941 |
/// startFirstPhase() and \ref startSecondPhase(). |
| 931 | 942 |
/// |
| 932 | 943 |
/// \pre Either \ref run() or \ref init() must be called before |
| 933 | 944 |
/// using this function. |
| 934 | 945 |
bool minCut(const Node& node) const {
|
| 935 | 946 |
return ((*_level)[node] == _level->maxLevel()) == _phase; |
| 936 | 947 |
} |
| 937 | 948 |
|
| 938 | 949 |
/// \brief Gives back a minimum value cut. |
| 939 | 950 |
/// |
| 940 | 951 |
/// Sets \c cutMap to the characteristic vector of a minimum value |
| 941 | 952 |
/// cut. \c cutMap should be a \ref concepts::WriteMap "writable" |
| 942 | 953 |
/// node map with \c bool (or convertible) value type. |
| 943 | 954 |
/// |
| 944 | 955 |
/// This method can be called both after running \ref startFirstPhase() |
| 945 | 956 |
/// and \ref startSecondPhase(). The result after the second phase |
| 946 | 957 |
/// could be slightly different if inexact computation is used. |
| 947 | 958 |
/// |
| 948 | 959 |
/// \note This function calls \ref minCut() for each node, so it runs in |
| 949 |
/// |
|
| 960 |
/// O(n) time. |
|
| 950 | 961 |
/// |
| 951 | 962 |
/// \pre Either \ref run() or \ref init() must be called before |
| 952 | 963 |
/// using this function. |
| 953 | 964 |
template <typename CutMap> |
| 954 | 965 |
void minCutMap(CutMap& cutMap) const {
|
| 955 | 966 |
for (NodeIt n(_graph); n != INVALID; ++n) {
|
| 956 | 967 |
cutMap.set(n, minCut(n)); |
| 957 | 968 |
} |
| 958 | 969 |
} |
| 959 | 970 |
|
| 960 | 971 |
/// @} |
| 961 | 972 |
}; |
| 962 | 973 |
} |
| 963 | 974 |
|
| 964 | 975 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef RADIX_SORT_H |
| 20 | 20 |
#define RADIX_SORT_H |
| 21 | 21 |
|
| 22 | 22 |
/// \ingroup auxalg |
| 23 | 23 |
/// \file |
| 24 | 24 |
/// \brief Radix sort |
| 25 | 25 |
/// |
| 26 | 26 |
/// Linear time sorting algorithms |
| 27 | 27 |
|
| 28 | 28 |
#include <vector> |
| 29 | 29 |
#include <limits> |
| 30 | 30 |
#include <iterator> |
| 31 | 31 |
#include <algorithm> |
| 32 | 32 |
|
| 33 | 33 |
namespace lemon {
|
| 34 | 34 |
|
| 35 | 35 |
namespace _radix_sort_bits {
|
| 36 | 36 |
|
| 37 | 37 |
template <typename Value> |
| 38 | 38 |
struct Identity {
|
| 39 | 39 |
const Value& operator()(const Value& val) {
|
| 40 | 40 |
return val; |
| 41 | 41 |
} |
| 42 | 42 |
}; |
| 43 | 43 |
|
| 44 | 44 |
|
| 45 | 45 |
template <typename Value, typename Iterator, typename Functor> |
| 46 | 46 |
Iterator radixSortPartition(Iterator first, Iterator last, |
| 47 | 47 |
Functor functor, Value mask) {
|
| 48 | 48 |
while (first != last && !(functor(*first) & mask)) {
|
| 49 | 49 |
++first; |
| 50 | 50 |
} |
| 51 | 51 |
if (first == last) {
|
| 52 | 52 |
return first; |
| 53 | 53 |
} |
| 54 | 54 |
--last; |
| 55 | 55 |
while (first != last && (functor(*last) & mask)) {
|
| 56 | 56 |
--last; |
| 57 | 57 |
} |
| 58 | 58 |
if (first == last) {
|
| 59 | 59 |
return first; |
| 60 | 60 |
} |
| 61 | 61 |
std::iter_swap(first, last); |
| 62 | 62 |
++first; |
| 63 | 63 |
if (!(first < last)) {
|
| 64 | 64 |
return first; |
| 65 | 65 |
} |
| 66 | 66 |
while (true) {
|
| 67 | 67 |
while (!(functor(*first) & mask)) {
|
| 68 | 68 |
++first; |
| 69 | 69 |
} |
| 70 | 70 |
--last; |
| 71 | 71 |
while (functor(*last) & mask) {
|
| 72 | 72 |
--last; |
| 73 | 73 |
} |
| 74 | 74 |
if (!(first < last)) {
|
| 75 | 75 |
return first; |
| 76 | 76 |
} |
| 77 | 77 |
std::iter_swap(first, last); |
| 78 | 78 |
++first; |
| 79 | 79 |
} |
| 80 | 80 |
} |
| 81 | 81 |
|
| 82 | 82 |
template <typename Iterator, typename Functor> |
| 83 | 83 |
Iterator radixSortSignPartition(Iterator first, Iterator last, |
| 84 | 84 |
Functor functor) {
|
| 85 | 85 |
while (first != last && functor(*first) < 0) {
|
| 86 | 86 |
++first; |
| 87 | 87 |
} |
| 88 | 88 |
if (first == last) {
|
| 89 | 89 |
return first; |
| 90 | 90 |
} |
| 91 | 91 |
--last; |
| 92 | 92 |
while (first != last && functor(*last) >= 0) {
|
| 93 | 93 |
--last; |
| 94 | 94 |
} |
| 95 | 95 |
if (first == last) {
|
| 96 | 96 |
return first; |
| 97 | 97 |
} |
| 98 | 98 |
std::iter_swap(first, last); |
| 99 | 99 |
++first; |
| 100 | 100 |
if (!(first < last)) {
|
| 101 | 101 |
return first; |
| 102 | 102 |
} |
| 103 | 103 |
while (true) {
|
| 104 | 104 |
while (functor(*first) < 0) {
|
| 105 | 105 |
++first; |
| 106 | 106 |
} |
| 107 | 107 |
--last; |
| 108 | 108 |
while (functor(*last) >= 0) {
|
| 109 | 109 |
--last; |
| 110 | 110 |
} |
| 111 | 111 |
if (!(first < last)) {
|
| 112 | 112 |
return first; |
| 113 | 113 |
} |
| 114 | 114 |
std::iter_swap(first, last); |
| 115 | 115 |
++first; |
| 116 | 116 |
} |
| 117 | 117 |
} |
| 118 | 118 |
|
| 119 | 119 |
template <typename Value, typename Iterator, typename Functor> |
| 120 | 120 |
void radixIntroSort(Iterator first, Iterator last, |
| 121 | 121 |
Functor functor, Value mask) {
|
| 122 | 122 |
while (mask != 0 && last - first > 1) {
|
| 123 | 123 |
Iterator cut = radixSortPartition(first, last, functor, mask); |
| 124 | 124 |
mask >>= 1; |
| 125 | 125 |
radixIntroSort(first, cut, functor, mask); |
| 126 | 126 |
first = cut; |
| 127 | 127 |
} |
| 128 | 128 |
} |
| 129 | 129 |
|
| 130 | 130 |
template <typename Value, typename Iterator, typename Functor> |
| 131 | 131 |
void radixSignedSort(Iterator first, Iterator last, Functor functor) {
|
| 132 | 132 |
|
| 133 | 133 |
Iterator cut = radixSortSignPartition(first, last, functor); |
| 134 | 134 |
|
| 135 | 135 |
Value mask; |
| 136 | 136 |
int max_digit; |
| 137 | 137 |
Iterator it; |
| 138 | 138 |
|
| 139 | 139 |
mask = ~0; max_digit = 0; |
| 140 | 140 |
for (it = first; it != cut; ++it) {
|
| 141 | 141 |
while ((mask & functor(*it)) != mask) {
|
| 142 | 142 |
++max_digit; |
| 143 | 143 |
mask <<= 1; |
| 144 | 144 |
} |
| 145 | 145 |
} |
| 146 | 146 |
radixIntroSort(first, cut, functor, 1 << max_digit); |
| 147 | 147 |
|
| 148 | 148 |
mask = 0; max_digit = 0; |
| 149 | 149 |
for (it = cut; it != last; ++it) {
|
| 150 | 150 |
while ((mask | functor(*it)) != mask) {
|
| 151 | 151 |
++max_digit; |
| 152 | 152 |
mask <<= 1; mask |= 1; |
| 153 | 153 |
} |
| 154 | 154 |
} |
| 155 | 155 |
radixIntroSort(cut, last, functor, 1 << max_digit); |
| 156 | 156 |
} |
| 157 | 157 |
|
| 158 | 158 |
template <typename Value, typename Iterator, typename Functor> |
| 159 | 159 |
void radixUnsignedSort(Iterator first, Iterator last, Functor functor) {
|
| 160 | 160 |
|
| 161 | 161 |
Value mask = 0; |
| 162 | 162 |
int max_digit = 0; |
| 163 | 163 |
|
| 164 | 164 |
Iterator it; |
| 165 | 165 |
for (it = first; it != last; ++it) {
|
| 166 | 166 |
while ((mask | functor(*it)) != mask) {
|
| 167 | 167 |
++max_digit; |
| 168 | 168 |
mask <<= 1; mask |= 1; |
| 169 | 169 |
} |
| 170 | 170 |
} |
| 171 | 171 |
radixIntroSort(first, last, functor, 1 << max_digit); |
| 172 | 172 |
} |
| 173 | 173 |
|
| 174 | 174 |
|
| 175 | 175 |
template <typename Value, |
| 176 | 176 |
bool sign = std::numeric_limits<Value>::is_signed > |
| 177 | 177 |
struct RadixSortSelector {
|
| 178 | 178 |
template <typename Iterator, typename Functor> |
| 179 | 179 |
static void sort(Iterator first, Iterator last, Functor functor) {
|
| 180 | 180 |
radixSignedSort<Value>(first, last, functor); |
| 181 | 181 |
} |
| 182 | 182 |
}; |
| 183 | 183 |
|
| 184 | 184 |
template <typename Value> |
| 185 | 185 |
struct RadixSortSelector<Value, false> {
|
| 186 | 186 |
template <typename Iterator, typename Functor> |
| 187 | 187 |
static void sort(Iterator first, Iterator last, Functor functor) {
|
| 188 | 188 |
radixUnsignedSort<Value>(first, last, functor); |
| 189 | 189 |
} |
| 190 | 190 |
}; |
| 191 | 191 |
|
| 192 | 192 |
} |
| 193 | 193 |
|
| 194 | 194 |
/// \ingroup auxalg |
| 195 | 195 |
/// |
| 196 | 196 |
/// \brief Sorts the STL compatible range into ascending order. |
| 197 | 197 |
/// |
| 198 | 198 |
/// The \c radixSort sorts an STL compatible range into ascending |
| 199 | 199 |
/// order. The radix sort algorithm can sort items which are mapped |
| 200 | 200 |
/// to integers with an adaptable unary function \c functor and the |
| 201 | 201 |
/// order will be ascending according to these mapped values. |
| 202 | 202 |
/// |
| 203 | 203 |
/// It is also possible to use a normal function instead |
| 204 | 204 |
/// of the functor object. If the functor is not given it will use |
| 205 | 205 |
/// the identity function instead. |
| 206 | 206 |
/// |
| 207 | 207 |
/// This is a special quick sort algorithm where the pivot |
| 208 |
/// values to split the items are choosen to be \f$ 2^k \f$ for each \c k. |
|
| 209 |
/// Therefore, the time complexity of the |
|
| 210 |
/// algorithm is \f$ O(\log(c)n) \f$ and it uses \f$ O(\log(c)) \f$, |
|
| 211 |
/// additional space, where \c c is the maximal value and \c n is the |
|
| 212 |
/// |
|
| 208 |
/// values to split the items are choosen to be 2<sup>k</sup> |
|
| 209 |
/// for each \c k. |
|
| 210 |
/// Therefore, the time complexity of the algorithm is O(log(c)*n) and |
|
| 211 |
/// it uses O(log(c)) additional space, where \c c is the maximal value |
|
| 212 |
/// and \c n is the number of the items in the container. |
|
| 213 | 213 |
/// |
| 214 | 214 |
/// \param first The begin of the given range. |
| 215 | 215 |
/// \param last The end of the given range. |
| 216 | 216 |
/// \param functor An adaptible unary function or a normal function |
| 217 | 217 |
/// which maps the items to any integer type which can be either |
| 218 | 218 |
/// signed or unsigned. |
| 219 | 219 |
/// |
| 220 | 220 |
/// \sa stableRadixSort() |
| 221 | 221 |
template <typename Iterator, typename Functor> |
| 222 | 222 |
void radixSort(Iterator first, Iterator last, Functor functor) {
|
| 223 | 223 |
using namespace _radix_sort_bits; |
| 224 | 224 |
typedef typename Functor::result_type Value; |
| 225 | 225 |
RadixSortSelector<Value>::sort(first, last, functor); |
| 226 | 226 |
} |
| 227 | 227 |
|
| 228 | 228 |
template <typename Iterator, typename Value, typename Key> |
| 229 | 229 |
void radixSort(Iterator first, Iterator last, Value (*functor)(Key)) {
|
| 230 | 230 |
using namespace _radix_sort_bits; |
| 231 | 231 |
RadixSortSelector<Value>::sort(first, last, functor); |
| 232 | 232 |
} |
| 233 | 233 |
|
| 234 | 234 |
template <typename Iterator, typename Value, typename Key> |
| 235 | 235 |
void radixSort(Iterator first, Iterator last, Value& (*functor)(Key)) {
|
| 236 | 236 |
using namespace _radix_sort_bits; |
| 237 | 237 |
RadixSortSelector<Value>::sort(first, last, functor); |
| 238 | 238 |
} |
| 239 | 239 |
|
| 240 | 240 |
template <typename Iterator, typename Value, typename Key> |
| 241 | 241 |
void radixSort(Iterator first, Iterator last, Value (*functor)(Key&)) {
|
| 242 | 242 |
using namespace _radix_sort_bits; |
| 243 | 243 |
RadixSortSelector<Value>::sort(first, last, functor); |
| 244 | 244 |
} |
| 245 | 245 |
|
| 246 | 246 |
template <typename Iterator, typename Value, typename Key> |
| 247 | 247 |
void radixSort(Iterator first, Iterator last, Value& (*functor)(Key&)) {
|
| 248 | 248 |
using namespace _radix_sort_bits; |
| 249 | 249 |
RadixSortSelector<Value>::sort(first, last, functor); |
| 250 | 250 |
} |
| 251 | 251 |
|
| 252 | 252 |
template <typename Iterator> |
| 253 | 253 |
void radixSort(Iterator first, Iterator last) {
|
| 254 | 254 |
using namespace _radix_sort_bits; |
| 255 | 255 |
typedef typename std::iterator_traits<Iterator>::value_type Value; |
| 256 | 256 |
RadixSortSelector<Value>::sort(first, last, Identity<Value>()); |
| 257 | 257 |
} |
| 258 | 258 |
|
| 259 | 259 |
namespace _radix_sort_bits {
|
| 260 | 260 |
|
| 261 | 261 |
template <typename Value> |
| 262 | 262 |
unsigned char valueByte(Value value, int byte) {
|
| 263 | 263 |
return value >> (std::numeric_limits<unsigned char>::digits * byte); |
| 264 | 264 |
} |
| 265 | 265 |
|
| 266 | 266 |
template <typename Functor, typename Key> |
| 267 | 267 |
void stableRadixIntroSort(Key *first, Key *last, Key *target, |
| 268 | 268 |
int byte, Functor functor) {
|
| 269 | 269 |
const int size = |
| 270 | 270 |
unsigned(std::numeric_limits<unsigned char>::max()) + 1; |
| 271 | 271 |
std::vector<int> counter(size); |
| 272 | 272 |
for (int i = 0; i < size; ++i) {
|
| 273 | 273 |
counter[i] = 0; |
| 274 | 274 |
} |
| 275 | 275 |
Key *it = first; |
| 276 | 276 |
while (first != last) {
|
| 277 | 277 |
++counter[valueByte(functor(*first), byte)]; |
| 278 | 278 |
++first; |
| 279 | 279 |
} |
| 280 | 280 |
int prev, num = 0; |
| 281 | 281 |
for (int i = 0; i < size; ++i) {
|
| 282 | 282 |
prev = num; |
| 283 | 283 |
num += counter[i]; |
| 284 | 284 |
counter[i] = prev; |
| 285 | 285 |
} |
| 286 | 286 |
while (it != last) {
|
| 287 | 287 |
target[counter[valueByte(functor(*it), byte)]++] = *it; |
| 288 | 288 |
++it; |
| 289 | 289 |
} |
| 290 | 290 |
} |
| 291 | 291 |
|
| 292 | 292 |
template <typename Functor, typename Key> |
| 293 | 293 |
void signedStableRadixIntroSort(Key *first, Key *last, Key *target, |
| 294 | 294 |
int byte, Functor functor) {
|
| 295 | 295 |
const int size = |
| 296 | 296 |
unsigned(std::numeric_limits<unsigned char>::max()) + 1; |
| 297 | 297 |
std::vector<int> counter(size); |
| 298 | 298 |
for (int i = 0; i < size; ++i) {
|
| 299 | 299 |
counter[i] = 0; |
| 300 | 300 |
} |
| 301 | 301 |
Key *it = first; |
| 302 | 302 |
while (first != last) {
|
| 303 | 303 |
counter[valueByte(functor(*first), byte)]++; |
| 304 | 304 |
++first; |
| 305 | 305 |
} |
| 306 | 306 |
int prev, num = 0; |
| 307 | 307 |
for (int i = size / 2; i < size; ++i) {
|
| 308 | 308 |
prev = num; |
| 309 | 309 |
num += counter[i]; |
| 310 | 310 |
counter[i] = prev; |
| 311 | 311 |
} |
| 312 | 312 |
for (int i = 0; i < size / 2; ++i) {
|
| 313 | 313 |
prev = num; |
| 314 | 314 |
num += counter[i]; |
| 315 | 315 |
counter[i] = prev; |
| 316 | 316 |
} |
| 317 | 317 |
while (it != last) {
|
| 318 | 318 |
target[counter[valueByte(functor(*it), byte)]++] = *it; |
| 319 | 319 |
++it; |
| 320 | 320 |
} |
| 321 | 321 |
} |
| 322 | 322 |
|
| 323 | 323 |
|
| 324 | 324 |
template <typename Value, typename Iterator, typename Functor> |
| 325 | 325 |
void stableRadixSignedSort(Iterator first, Iterator last, Functor functor) {
|
| 326 | 326 |
if (first == last) return; |
| 327 | 327 |
typedef typename std::iterator_traits<Iterator>::value_type Key; |
| 328 | 328 |
typedef std::allocator<Key> Allocator; |
| 329 | 329 |
Allocator allocator; |
| 330 | 330 |
|
| 331 | 331 |
int length = std::distance(first, last); |
| 332 | 332 |
Key* buffer = allocator.allocate(2 * length); |
| 333 | 333 |
try {
|
| 334 | 334 |
bool dir = true; |
| 335 | 335 |
std::copy(first, last, buffer); |
| 336 | 336 |
for (int i = 0; i < int(sizeof(Value)) - 1; ++i) {
|
| 337 | 337 |
if (dir) {
|
| 338 | 338 |
stableRadixIntroSort(buffer, buffer + length, buffer + length, |
| 339 | 339 |
i, functor); |
| 340 | 340 |
} else {
|
| 341 | 341 |
stableRadixIntroSort(buffer + length, buffer + 2 * length, buffer, |
| 342 | 342 |
i, functor); |
| 343 | 343 |
} |
| 344 | 344 |
dir = !dir; |
| 345 | 345 |
} |
| 346 | 346 |
if (dir) {
|
| 347 | 347 |
signedStableRadixIntroSort(buffer, buffer + length, buffer + length, |
| 348 | 348 |
sizeof(Value) - 1, functor); |
| 349 | 349 |
std::copy(buffer + length, buffer + 2 * length, first); |
| 350 | 350 |
} else {
|
| 351 | 351 |
signedStableRadixIntroSort(buffer + length, buffer + 2 * length, |
| 352 | 352 |
buffer, sizeof(Value) - 1, functor); |
| 353 | 353 |
std::copy(buffer, buffer + length, first); |
| 354 | 354 |
} |
| 355 | 355 |
} catch (...) {
|
| 356 | 356 |
allocator.deallocate(buffer, 2 * length); |
| 357 | 357 |
throw; |
| 358 | 358 |
} |
| 359 | 359 |
allocator.deallocate(buffer, 2 * length); |
| 360 | 360 |
} |
| 361 | 361 |
|
| 362 | 362 |
template <typename Value, typename Iterator, typename Functor> |
| 363 | 363 |
void stableRadixUnsignedSort(Iterator first, Iterator last, |
| 364 | 364 |
Functor functor) {
|
| 365 | 365 |
if (first == last) return; |
| 366 | 366 |
typedef typename std::iterator_traits<Iterator>::value_type Key; |
| 367 | 367 |
typedef std::allocator<Key> Allocator; |
| 368 | 368 |
Allocator allocator; |
| 369 | 369 |
|
| 370 | 370 |
int length = std::distance(first, last); |
| 371 | 371 |
Key *buffer = allocator.allocate(2 * length); |
| 372 | 372 |
try {
|
| 373 | 373 |
bool dir = true; |
| 374 | 374 |
std::copy(first, last, buffer); |
| 375 | 375 |
for (int i = 0; i < int(sizeof(Value)); ++i) {
|
| 376 | 376 |
if (dir) {
|
| 377 | 377 |
stableRadixIntroSort(buffer, buffer + length, |
| 378 | 378 |
buffer + length, i, functor); |
| 379 | 379 |
} else {
|
| 380 | 380 |
stableRadixIntroSort(buffer + length, buffer + 2 * length, |
| 381 | 381 |
buffer, i, functor); |
| 382 | 382 |
} |
| 383 | 383 |
dir = !dir; |
| 384 | 384 |
} |
| 385 | 385 |
if (dir) {
|
| 386 | 386 |
std::copy(buffer, buffer + length, first); |
| 387 | 387 |
} else {
|
| 388 | 388 |
std::copy(buffer + length, buffer + 2 * length, first); |
| 389 | 389 |
} |
| 390 | 390 |
} catch (...) {
|
| 391 | 391 |
allocator.deallocate(buffer, 2 * length); |
| 392 | 392 |
throw; |
| 393 | 393 |
} |
| 394 | 394 |
allocator.deallocate(buffer, 2 * length); |
| 395 | 395 |
} |
| 396 | 396 |
|
| 397 | 397 |
|
| 398 | 398 |
|
| 399 | 399 |
template <typename Value, |
| 400 | 400 |
bool sign = std::numeric_limits<Value>::is_signed > |
| 401 | 401 |
struct StableRadixSortSelector {
|
| 402 | 402 |
template <typename Iterator, typename Functor> |
| 403 | 403 |
static void sort(Iterator first, Iterator last, Functor functor) {
|
| 404 | 404 |
stableRadixSignedSort<Value>(first, last, functor); |
| 405 | 405 |
} |
| 406 | 406 |
}; |
| 407 | 407 |
|
| 408 | 408 |
template <typename Value> |
| 409 | 409 |
struct StableRadixSortSelector<Value, false> {
|
| 410 | 410 |
template <typename Iterator, typename Functor> |
| 411 | 411 |
static void sort(Iterator first, Iterator last, Functor functor) {
|
| 412 | 412 |
stableRadixUnsignedSort<Value>(first, last, functor); |
| 413 | 413 |
} |
| 414 | 414 |
}; |
| 415 | 415 |
|
| 416 | 416 |
} |
| 417 | 417 |
|
| 418 | 418 |
/// \ingroup auxalg |
| 419 | 419 |
/// |
| 420 | 420 |
/// \brief Sorts the STL compatible range into ascending order in a stable |
| 421 | 421 |
/// way. |
| 422 | 422 |
/// |
| 423 | 423 |
/// This function sorts an STL compatible range into ascending |
| 424 | 424 |
/// order according to an integer mapping in the same as radixSort() does. |
| 425 | 425 |
/// |
| 426 | 426 |
/// This sorting algorithm is stable, i.e. the order of two equal |
| 427 | 427 |
/// elements remains the same after the sorting. |
| 428 | 428 |
/// |
| 429 | 429 |
/// This sort algorithm use a radix forward sort on the |
| 430 | 430 |
/// bytes of the integer number. The algorithm sorts the items |
| 431 | 431 |
/// byte-by-byte. First, it counts how many times a byte value occurs |
| 432 | 432 |
/// in the container, then it copies the corresponding items to |
| 433 |
/// another container in asceding order in |
|
| 433 |
/// another container in asceding order in O(n) time. |
|
| 434 | 434 |
/// |
| 435 |
/// The time complexity of the algorithm is \f$ O(\log(c)n) \f$ and |
|
| 436 |
/// it uses \f$ O(n) \f$, additional space, where \c c is the |
|
| 435 |
/// The time complexity of the algorithm is O(log(c)*n) and |
|
| 436 |
/// it uses O(n) additional space, where \c c is the |
|
| 437 | 437 |
/// maximal value and \c n is the number of the items in the |
| 438 | 438 |
/// container. |
| 439 | 439 |
/// |
| 440 | 440 |
|
| 441 | 441 |
/// \param first The begin of the given range. |
| 442 | 442 |
/// \param last The end of the given range. |
| 443 | 443 |
/// \param functor An adaptible unary function or a normal function |
| 444 | 444 |
/// which maps the items to any integer type which can be either |
| 445 | 445 |
/// signed or unsigned. |
| 446 | 446 |
/// \sa radixSort() |
| 447 | 447 |
template <typename Iterator, typename Functor> |
| 448 | 448 |
void stableRadixSort(Iterator first, Iterator last, Functor functor) {
|
| 449 | 449 |
using namespace _radix_sort_bits; |
| 450 | 450 |
typedef typename Functor::result_type Value; |
| 451 | 451 |
StableRadixSortSelector<Value>::sort(first, last, functor); |
| 452 | 452 |
} |
| 453 | 453 |
|
| 454 | 454 |
template <typename Iterator, typename Value, typename Key> |
| 455 | 455 |
void stableRadixSort(Iterator first, Iterator last, Value (*functor)(Key)) {
|
| 456 | 456 |
using namespace _radix_sort_bits; |
| 457 | 457 |
StableRadixSortSelector<Value>::sort(first, last, functor); |
| 458 | 458 |
} |
| 459 | 459 |
|
| 460 | 460 |
template <typename Iterator, typename Value, typename Key> |
| 461 | 461 |
void stableRadixSort(Iterator first, Iterator last, Value& (*functor)(Key)) {
|
| 462 | 462 |
using namespace _radix_sort_bits; |
| 463 | 463 |
StableRadixSortSelector<Value>::sort(first, last, functor); |
| 464 | 464 |
} |
| 465 | 465 |
|
| 466 | 466 |
template <typename Iterator, typename Value, typename Key> |
| 467 | 467 |
void stableRadixSort(Iterator first, Iterator last, Value (*functor)(Key&)) {
|
| 468 | 468 |
using namespace _radix_sort_bits; |
| 469 | 469 |
StableRadixSortSelector<Value>::sort(first, last, functor); |
| 470 | 470 |
} |
| 471 | 471 |
|
| 472 | 472 |
template <typename Iterator, typename Value, typename Key> |
| 473 | 473 |
void stableRadixSort(Iterator first, Iterator last, Value& (*functor)(Key&)) {
|
| 474 | 474 |
using namespace _radix_sort_bits; |
| 475 | 475 |
StableRadixSortSelector<Value>::sort(first, last, functor); |
| 476 | 476 |
} |
| 477 | 477 |
|
| 478 | 478 |
template <typename Iterator> |
| 479 | 479 |
void stableRadixSort(Iterator first, Iterator last) {
|
| 480 | 480 |
using namespace _radix_sort_bits; |
| 481 | 481 |
typedef typename std::iterator_traits<Iterator>::value_type Value; |
| 482 | 482 |
StableRadixSortSelector<Value>::sort(first, last, Identity<Value>()); |
| 483 | 483 |
} |
| 484 | 484 |
|
| 485 | 485 |
} |
| 486 | 486 |
|
| 487 | 487 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
/* |
| 20 | 20 |
* This file contains the reimplemented version of the Mersenne Twister |
| 21 | 21 |
* Generator of Matsumoto and Nishimura. |
| 22 | 22 |
* |
| 23 | 23 |
* See the appropriate copyright notice below. |
| 24 | 24 |
* |
| 25 | 25 |
* Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura, |
| 26 | 26 |
* All rights reserved. |
| 27 | 27 |
* |
| 28 | 28 |
* Redistribution and use in source and binary forms, with or without |
| 29 | 29 |
* modification, are permitted provided that the following conditions |
| 30 | 30 |
* are met: |
| 31 | 31 |
* |
| 32 | 32 |
* 1. Redistributions of source code must retain the above copyright |
| 33 | 33 |
* notice, this list of conditions and the following disclaimer. |
| 34 | 34 |
* |
| 35 | 35 |
* 2. Redistributions in binary form must reproduce the above copyright |
| 36 | 36 |
* notice, this list of conditions and the following disclaimer in the |
| 37 | 37 |
* documentation and/or other materials provided with the distribution. |
| 38 | 38 |
* |
| 39 | 39 |
* 3. The names of its contributors may not be used to endorse or promote |
| 40 | 40 |
* products derived from this software without specific prior written |
| 41 | 41 |
* permission. |
| 42 | 42 |
* |
| 43 | 43 |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 44 | 44 |
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 45 | 45 |
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 46 | 46 |
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 47 | 47 |
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 48 | 48 |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 49 | 49 |
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| 50 | 50 |
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 51 | 51 |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 52 | 52 |
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 53 | 53 |
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 54 | 54 |
* OF THE POSSIBILITY OF SUCH DAMAGE. |
| 55 | 55 |
* |
| 56 | 56 |
* |
| 57 | 57 |
* Any feedback is very welcome. |
| 58 | 58 |
* http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html |
| 59 | 59 |
* email: m-mat @ math.sci.hiroshima-u.ac.jp (remove space) |
| 60 | 60 |
*/ |
| 61 | 61 |
|
| 62 | 62 |
#ifndef LEMON_RANDOM_H |
| 63 | 63 |
#define LEMON_RANDOM_H |
| 64 | 64 |
|
| 65 | 65 |
#include <algorithm> |
| 66 | 66 |
#include <iterator> |
| 67 | 67 |
#include <vector> |
| 68 | 68 |
#include <limits> |
| 69 | 69 |
#include <fstream> |
| 70 | 70 |
|
| 71 | 71 |
#include <lemon/math.h> |
| 72 | 72 |
#include <lemon/dim2.h> |
| 73 | 73 |
|
| 74 | 74 |
#ifndef WIN32 |
| 75 | 75 |
#include <sys/time.h> |
| 76 | 76 |
#include <ctime> |
| 77 | 77 |
#include <sys/types.h> |
| 78 | 78 |
#include <unistd.h> |
| 79 | 79 |
#else |
| 80 |
#include <windows.h> |
|
| 80 |
#include <lemon/bits/windows.h> |
|
| 81 | 81 |
#endif |
| 82 | 82 |
|
| 83 | 83 |
///\ingroup misc |
| 84 | 84 |
///\file |
| 85 | 85 |
///\brief Mersenne Twister random number generator |
| 86 | 86 |
|
| 87 | 87 |
namespace lemon {
|
| 88 | 88 |
|
| 89 | 89 |
namespace _random_bits {
|
| 90 | 90 |
|
| 91 | 91 |
template <typename _Word, int _bits = std::numeric_limits<_Word>::digits> |
| 92 | 92 |
struct RandomTraits {};
|
| 93 | 93 |
|
| 94 | 94 |
template <typename _Word> |
| 95 | 95 |
struct RandomTraits<_Word, 32> {
|
| 96 | 96 |
|
| 97 | 97 |
typedef _Word Word; |
| 98 | 98 |
static const int bits = 32; |
| 99 | 99 |
|
| 100 | 100 |
static const int length = 624; |
| 101 | 101 |
static const int shift = 397; |
| 102 | 102 |
|
| 103 | 103 |
static const Word mul = 0x6c078965u; |
| 104 | 104 |
static const Word arrayInit = 0x012BD6AAu; |
| 105 | 105 |
static const Word arrayMul1 = 0x0019660Du; |
| 106 | 106 |
static const Word arrayMul2 = 0x5D588B65u; |
| 107 | 107 |
|
| 108 | 108 |
static const Word mask = 0x9908B0DFu; |
| 109 | 109 |
static const Word loMask = (1u << 31) - 1; |
| 110 | 110 |
static const Word hiMask = ~loMask; |
| 111 | 111 |
|
| 112 | 112 |
|
| 113 | 113 |
static Word tempering(Word rnd) {
|
| 114 | 114 |
rnd ^= (rnd >> 11); |
| 115 | 115 |
rnd ^= (rnd << 7) & 0x9D2C5680u; |
| 116 | 116 |
rnd ^= (rnd << 15) & 0xEFC60000u; |
| 117 | 117 |
rnd ^= (rnd >> 18); |
| 118 | 118 |
return rnd; |
| 119 | 119 |
} |
| 120 | 120 |
|
| 121 | 121 |
}; |
| 122 | 122 |
|
| 123 | 123 |
template <typename _Word> |
| 124 | 124 |
struct RandomTraits<_Word, 64> {
|
| 125 | 125 |
|
| 126 | 126 |
typedef _Word Word; |
| 127 | 127 |
static const int bits = 64; |
| 128 | 128 |
|
| 129 | 129 |
static const int length = 312; |
| 130 | 130 |
static const int shift = 156; |
| 131 | 131 |
|
| 132 | 132 |
static const Word mul = Word(0x5851F42Du) << 32 | Word(0x4C957F2Du); |
| 133 | 133 |
static const Word arrayInit = Word(0x00000000u) << 32 |Word(0x012BD6AAu); |
| 134 | 134 |
static const Word arrayMul1 = Word(0x369DEA0Fu) << 32 |Word(0x31A53F85u); |
| 135 | 135 |
static const Word arrayMul2 = Word(0x27BB2EE6u) << 32 |Word(0x87B0B0FDu); |
| 136 | 136 |
|
| 137 | 137 |
static const Word mask = Word(0xB5026F5Au) << 32 | Word(0xA96619E9u); |
| 138 | 138 |
static const Word loMask = (Word(1u) << 31) - 1; |
| 139 | 139 |
static const Word hiMask = ~loMask; |
| 140 | 140 |
|
| 141 | 141 |
static Word tempering(Word rnd) {
|
| 142 | 142 |
rnd ^= (rnd >> 29) & (Word(0x55555555u) << 32 | Word(0x55555555u)); |
| 143 | 143 |
rnd ^= (rnd << 17) & (Word(0x71D67FFFu) << 32 | Word(0xEDA60000u)); |
| 144 | 144 |
rnd ^= (rnd << 37) & (Word(0xFFF7EEE0u) << 32 | Word(0x00000000u)); |
| 145 | 145 |
rnd ^= (rnd >> 43); |
| 146 | 146 |
return rnd; |
| 147 | 147 |
} |
| 148 | 148 |
|
| 149 | 149 |
}; |
| 150 | 150 |
|
| 151 | 151 |
template <typename _Word> |
| 152 | 152 |
class RandomCore {
|
| 153 | 153 |
public: |
| 154 | 154 |
|
| 155 | 155 |
typedef _Word Word; |
| 156 | 156 |
|
| 157 | 157 |
private: |
| 158 | 158 |
|
| 159 | 159 |
static const int bits = RandomTraits<Word>::bits; |
| 160 | 160 |
|
| 161 | 161 |
static const int length = RandomTraits<Word>::length; |
| 162 | 162 |
static const int shift = RandomTraits<Word>::shift; |
| 163 | 163 |
|
| 164 | 164 |
public: |
| 165 | 165 |
|
| 166 | 166 |
void initState() {
|
| 167 | 167 |
static const Word seedArray[4] = {
|
| 168 | 168 |
0x12345u, 0x23456u, 0x34567u, 0x45678u |
| 169 | 169 |
}; |
| 170 | 170 |
|
| 171 | 171 |
initState(seedArray, seedArray + 4); |
| 172 | 172 |
} |
| 173 | 173 |
|
| 174 | 174 |
void initState(Word seed) {
|
| 175 | 175 |
|
| 176 | 176 |
static const Word mul = RandomTraits<Word>::mul; |
| 177 | 177 |
|
| 178 | 178 |
current = state; |
| 179 | 179 |
|
| 180 | 180 |
Word *curr = state + length - 1; |
| 181 | 181 |
curr[0] = seed; --curr; |
| 182 | 182 |
for (int i = 1; i < length; ++i) {
|
| 183 | 183 |
curr[0] = (mul * ( curr[1] ^ (curr[1] >> (bits - 2)) ) + i); |
| 184 | 184 |
--curr; |
| 185 | 185 |
} |
| 186 | 186 |
} |
| 187 | 187 |
|
| 188 | 188 |
template <typename Iterator> |
| 189 | 189 |
void initState(Iterator begin, Iterator end) {
|
| 190 | 190 |
|
| 191 | 191 |
static const Word init = RandomTraits<Word>::arrayInit; |
| 192 | 192 |
static const Word mul1 = RandomTraits<Word>::arrayMul1; |
| 193 | 193 |
static const Word mul2 = RandomTraits<Word>::arrayMul2; |
| 194 | 194 |
|
| 195 | 195 |
|
| 196 | 196 |
Word *curr = state + length - 1; --curr; |
| 197 | 197 |
Iterator it = begin; int cnt = 0; |
| 198 | 198 |
int num; |
| 199 | 199 |
|
| 200 | 200 |
initState(init); |
| 201 | 201 |
|
| 202 | 202 |
num = length > end - begin ? length : end - begin; |
| 203 | 203 |
while (num--) {
|
| 204 | 204 |
curr[0] = (curr[0] ^ ((curr[1] ^ (curr[1] >> (bits - 2))) * mul1)) |
| 205 | 205 |
+ *it + cnt; |
| 206 | 206 |
++it; ++cnt; |
| 207 | 207 |
if (it == end) {
|
| 208 | 208 |
it = begin; cnt = 0; |
| 209 | 209 |
} |
| 210 | 210 |
if (curr == state) {
|
| 211 | 211 |
curr = state + length - 1; curr[0] = state[0]; |
| 212 | 212 |
} |
| 213 | 213 |
--curr; |
| 214 | 214 |
} |
| 215 | 215 |
|
| 216 | 216 |
num = length - 1; cnt = length - (curr - state) - 1; |
| 217 | 217 |
while (num--) {
|
| 218 | 218 |
curr[0] = (curr[0] ^ ((curr[1] ^ (curr[1] >> (bits - 2))) * mul2)) |
| 219 | 219 |
- cnt; |
| 220 | 220 |
--curr; ++cnt; |
| 221 | 221 |
if (curr == state) {
|
| 222 | 222 |
curr = state + length - 1; curr[0] = state[0]; --curr; |
| 223 | 223 |
cnt = 1; |
| 224 | 224 |
} |
| 225 | 225 |
} |
| 226 | 226 |
|
| 227 | 227 |
state[length - 1] = Word(1) << (bits - 1); |
| 228 | 228 |
} |
| 229 | 229 |
|
| 230 | 230 |
void copyState(const RandomCore& other) {
|
| 231 | 231 |
std::copy(other.state, other.state + length, state); |
| 232 | 232 |
current = state + (other.current - other.state); |
| 233 | 233 |
} |
| 234 | 234 |
|
| 235 | 235 |
Word operator()() {
|
| 236 | 236 |
if (current == state) fillState(); |
| 237 | 237 |
--current; |
| 238 | 238 |
Word rnd = *current; |
| 239 | 239 |
return RandomTraits<Word>::tempering(rnd); |
| 240 | 240 |
} |
| 241 | 241 |
|
| 242 | 242 |
private: |
| 243 | 243 |
|
| 244 | 244 |
|
| 245 | 245 |
void fillState() {
|
| 246 | 246 |
static const Word mask[2] = { 0x0ul, RandomTraits<Word>::mask };
|
| 247 | 247 |
static const Word loMask = RandomTraits<Word>::loMask; |
| 248 | 248 |
static const Word hiMask = RandomTraits<Word>::hiMask; |
| 249 | 249 |
|
| 250 | 250 |
current = state + length; |
| 251 | 251 |
|
| 252 | 252 |
register Word *curr = state + length - 1; |
| 253 | 253 |
register long num; |
| 254 | 254 |
|
| 255 | 255 |
num = length - shift; |
| 256 | 256 |
while (num--) {
|
| 257 | 257 |
curr[0] = (((curr[0] & hiMask) | (curr[-1] & loMask)) >> 1) ^ |
| 258 | 258 |
curr[- shift] ^ mask[curr[-1] & 1ul]; |
| 259 | 259 |
--curr; |
| 260 | 260 |
} |
| 261 | 261 |
num = shift - 1; |
| 262 | 262 |
while (num--) {
|
| 263 | 263 |
curr[0] = (((curr[0] & hiMask) | (curr[-1] & loMask)) >> 1) ^ |
| 264 | 264 |
curr[length - shift] ^ mask[curr[-1] & 1ul]; |
| 265 | 265 |
--curr; |
| 266 | 266 |
} |
| 267 | 267 |
state[0] = (((state[0] & hiMask) | (curr[length - 1] & loMask)) >> 1) ^ |
| 268 | 268 |
curr[length - shift] ^ mask[curr[length - 1] & 1ul]; |
| 269 | 269 |
|
| 270 | 270 |
} |
| 271 | 271 |
|
| 272 | 272 |
|
| 273 | 273 |
Word *current; |
| 274 | 274 |
Word state[length]; |
| 275 | 275 |
|
| 276 | 276 |
}; |
| 277 | 277 |
|
| 278 | 278 |
|
| 279 | 279 |
template <typename Result, |
| 280 | 280 |
int shift = (std::numeric_limits<Result>::digits + 1) / 2> |
| 281 | 281 |
struct Masker {
|
| 282 | 282 |
static Result mask(const Result& result) {
|
| 283 | 283 |
return Masker<Result, (shift + 1) / 2>:: |
| 284 | 284 |
mask(static_cast<Result>(result | (result >> shift))); |
| 285 | 285 |
} |
| 286 | 286 |
}; |
| 287 | 287 |
|
| 288 | 288 |
template <typename Result> |
| 289 | 289 |
struct Masker<Result, 1> {
|
| 290 | 290 |
static Result mask(const Result& result) {
|
| 291 | 291 |
return static_cast<Result>(result | (result >> 1)); |
| 292 | 292 |
} |
| 293 | 293 |
}; |
| 294 | 294 |
|
| 295 | 295 |
template <typename Result, typename Word, |
| 296 | 296 |
int rest = std::numeric_limits<Result>::digits, int shift = 0, |
| 297 | 297 |
bool last = rest <= std::numeric_limits<Word>::digits> |
| 298 | 298 |
struct IntConversion {
|
| 299 | 299 |
static const int bits = std::numeric_limits<Word>::digits; |
| 300 | 300 |
|
| 301 | 301 |
static Result convert(RandomCore<Word>& rnd) {
|
| 302 | 302 |
return static_cast<Result>(rnd() >> (bits - rest)) << shift; |
| 303 | 303 |
} |
| 304 | 304 |
|
| 305 | 305 |
}; |
| 306 | 306 |
|
| 307 | 307 |
template <typename Result, typename Word, int rest, int shift> |
| 308 | 308 |
struct IntConversion<Result, Word, rest, shift, false> {
|
| 309 | 309 |
static const int bits = std::numeric_limits<Word>::digits; |
| 310 | 310 |
|
| 311 | 311 |
static Result convert(RandomCore<Word>& rnd) {
|
| 312 | 312 |
return (static_cast<Result>(rnd()) << shift) | |
| 313 | 313 |
IntConversion<Result, Word, rest - bits, shift + bits>::convert(rnd); |
| 314 | 314 |
} |
| 315 | 315 |
}; |
| 316 | 316 |
|
| 317 | 317 |
|
| 318 | 318 |
template <typename Result, typename Word, |
| 319 | 319 |
bool one_word = (std::numeric_limits<Word>::digits < |
| 320 | 320 |
std::numeric_limits<Result>::digits) > |
| 321 | 321 |
struct Mapping {
|
| 322 | 322 |
static Result map(RandomCore<Word>& rnd, const Result& bound) {
|
| 323 | 323 |
Word max = Word(bound - 1); |
| 324 | 324 |
Result mask = Masker<Result>::mask(bound - 1); |
| 325 | 325 |
Result num; |
| 326 | 326 |
do {
|
| 327 | 327 |
num = IntConversion<Result, Word>::convert(rnd) & mask; |
| 328 | 328 |
} while (num > max); |
| 329 | 329 |
return num; |
| 330 | 330 |
} |
| 331 | 331 |
}; |
| 332 | 332 |
|
| 333 | 333 |
template <typename Result, typename Word> |
| 334 | 334 |
struct Mapping<Result, Word, false> {
|
| 335 | 335 |
static Result map(RandomCore<Word>& rnd, const Result& bound) {
|
| 336 | 336 |
Word max = Word(bound - 1); |
| 337 | 337 |
Word mask = Masker<Word, (std::numeric_limits<Result>::digits + 1) / 2> |
| 338 | 338 |
::mask(max); |
| 339 | 339 |
Word num; |
| 340 | 340 |
do {
|
| 341 | 341 |
num = rnd() & mask; |
| 342 | 342 |
} while (num > max); |
| 343 | 343 |
return num; |
| 344 | 344 |
} |
| 345 | 345 |
}; |
| 346 | 346 |
|
| 347 |
template <typename Result, int exp |
|
| 347 |
template <typename Result, int exp> |
|
| 348 | 348 |
struct ShiftMultiplier {
|
| 349 | 349 |
static const Result multiplier() {
|
| 350 | 350 |
Result res = ShiftMultiplier<Result, exp / 2>::multiplier(); |
| 351 | 351 |
res *= res; |
| 352 |
if ((exp & 1) == 1) res *= static_cast<Result>(2.0); |
|
| 353 |
return res; |
|
| 354 |
} |
|
| 355 |
}; |
|
| 356 |
|
|
| 357 |
template <typename Result, int exp> |
|
| 358 |
struct ShiftMultiplier<Result, exp, false> {
|
|
| 359 |
static const Result multiplier() {
|
|
| 360 |
Result res = ShiftMultiplier<Result, exp / 2>::multiplier(); |
|
| 361 |
res *= res; |
|
| 362 | 352 |
if ((exp & 1) == 1) res *= static_cast<Result>(0.5); |
| 363 | 353 |
return res; |
| 364 | 354 |
} |
| 365 | 355 |
}; |
| 366 | 356 |
|
| 367 | 357 |
template <typename Result> |
| 368 |
struct ShiftMultiplier<Result, 0 |
|
| 358 |
struct ShiftMultiplier<Result, 0> {
|
|
| 369 | 359 |
static const Result multiplier() {
|
| 370 | 360 |
return static_cast<Result>(1.0); |
| 371 | 361 |
} |
| 372 | 362 |
}; |
| 373 | 363 |
|
| 374 | 364 |
template <typename Result> |
| 375 |
struct ShiftMultiplier<Result, |
|
| 365 |
struct ShiftMultiplier<Result, 20> {
|
|
| 376 | 366 |
static const Result multiplier() {
|
| 377 | 367 |
return static_cast<Result>(1.0/1048576.0); |
| 378 | 368 |
} |
| 379 | 369 |
}; |
| 380 | 370 |
|
| 381 | 371 |
template <typename Result> |
| 382 |
struct ShiftMultiplier<Result, |
|
| 372 |
struct ShiftMultiplier<Result, 32> {
|
|
| 383 | 373 |
static const Result multiplier() {
|
| 384 |
return static_cast<Result>(1.0/ |
|
| 374 |
return static_cast<Result>(1.0/4294967296.0); |
|
| 385 | 375 |
} |
| 386 | 376 |
}; |
| 387 | 377 |
|
| 388 | 378 |
template <typename Result> |
| 389 |
struct ShiftMultiplier<Result, |
|
| 379 |
struct ShiftMultiplier<Result, 53> {
|
|
| 390 | 380 |
static const Result multiplier() {
|
| 391 | 381 |
return static_cast<Result>(1.0/9007199254740992.0); |
| 392 | 382 |
} |
| 393 | 383 |
}; |
| 394 | 384 |
|
| 395 | 385 |
template <typename Result> |
| 396 |
struct ShiftMultiplier<Result, |
|
| 386 |
struct ShiftMultiplier<Result, 64> {
|
|
| 397 | 387 |
static const Result multiplier() {
|
| 398 | 388 |
return static_cast<Result>(1.0/18446744073709551616.0); |
| 399 | 389 |
} |
| 400 | 390 |
}; |
| 401 | 391 |
|
| 402 | 392 |
template <typename Result, int exp> |
| 403 | 393 |
struct Shifting {
|
| 404 | 394 |
static Result shift(const Result& result) {
|
| 405 | 395 |
return result * ShiftMultiplier<Result, exp>::multiplier(); |
| 406 | 396 |
} |
| 407 | 397 |
}; |
| 408 | 398 |
|
| 409 | 399 |
template <typename Result, typename Word, |
| 410 | 400 |
int rest = std::numeric_limits<Result>::digits, int shift = 0, |
| 411 | 401 |
bool last = rest <= std::numeric_limits<Word>::digits> |
| 412 | 402 |
struct RealConversion{
|
| 413 | 403 |
static const int bits = std::numeric_limits<Word>::digits; |
| 414 | 404 |
|
| 415 | 405 |
static Result convert(RandomCore<Word>& rnd) {
|
| 416 |
return Shifting<Result, |
|
| 406 |
return Shifting<Result, shift + rest>:: |
|
| 417 | 407 |
shift(static_cast<Result>(rnd() >> (bits - rest))); |
| 418 | 408 |
} |
| 419 | 409 |
}; |
| 420 | 410 |
|
| 421 | 411 |
template <typename Result, typename Word, int rest, int shift> |
| 422 | 412 |
struct RealConversion<Result, Word, rest, shift, false> {
|
| 423 | 413 |
static const int bits = std::numeric_limits<Word>::digits; |
| 424 | 414 |
|
| 425 | 415 |
static Result convert(RandomCore<Word>& rnd) {
|
| 426 |
return Shifting<Result, |
|
| 416 |
return Shifting<Result, shift + bits>:: |
|
| 427 | 417 |
shift(static_cast<Result>(rnd())) + |
| 428 | 418 |
RealConversion<Result, Word, rest-bits, shift + bits>:: |
| 429 | 419 |
convert(rnd); |
| 430 | 420 |
} |
| 431 | 421 |
}; |
| 432 | 422 |
|
| 433 | 423 |
template <typename Result, typename Word> |
| 434 | 424 |
struct Initializer {
|
| 435 | 425 |
|
| 436 | 426 |
template <typename Iterator> |
| 437 | 427 |
static void init(RandomCore<Word>& rnd, Iterator begin, Iterator end) {
|
| 438 | 428 |
std::vector<Word> ws; |
| 439 | 429 |
for (Iterator it = begin; it != end; ++it) {
|
| 440 | 430 |
ws.push_back(Word(*it)); |
| 441 | 431 |
} |
| 442 | 432 |
rnd.initState(ws.begin(), ws.end()); |
| 443 | 433 |
} |
| 444 | 434 |
|
| 445 | 435 |
static void init(RandomCore<Word>& rnd, Result seed) {
|
| 446 | 436 |
rnd.initState(seed); |
| 447 | 437 |
} |
| 448 | 438 |
}; |
| 449 | 439 |
|
| 450 | 440 |
template <typename Word> |
| 451 | 441 |
struct BoolConversion {
|
| 452 | 442 |
static bool convert(RandomCore<Word>& rnd) {
|
| 453 | 443 |
return (rnd() & 1) == 1; |
| 454 | 444 |
} |
| 455 | 445 |
}; |
| 456 | 446 |
|
| 457 | 447 |
template <typename Word> |
| 458 | 448 |
struct BoolProducer {
|
| 459 | 449 |
Word buffer; |
| 460 | 450 |
int num; |
| 461 | 451 |
|
| 462 | 452 |
BoolProducer() : num(0) {}
|
| 463 | 453 |
|
| 464 | 454 |
bool convert(RandomCore<Word>& rnd) {
|
| 465 | 455 |
if (num == 0) {
|
| 466 | 456 |
buffer = rnd(); |
| 467 | 457 |
num = RandomTraits<Word>::bits; |
| 468 | 458 |
} |
| 469 | 459 |
bool r = (buffer & 1); |
| 470 | 460 |
buffer >>= 1; |
| 471 | 461 |
--num; |
| 472 | 462 |
return r; |
| 473 | 463 |
} |
| 474 | 464 |
}; |
| 475 | 465 |
|
| 476 | 466 |
} |
| 477 | 467 |
|
| 478 | 468 |
/// \ingroup misc |
| 479 | 469 |
/// |
| 480 | 470 |
/// \brief Mersenne Twister random number generator |
| 481 | 471 |
/// |
| 482 | 472 |
/// The Mersenne Twister is a twisted generalized feedback |
| 483 | 473 |
/// shift-register generator of Matsumoto and Nishimura. The period |
| 484 | 474 |
/// of this generator is \f$ 2^{19937} - 1 \f$ and it is
|
| 485 | 475 |
/// equi-distributed in 623 dimensions for 32-bit numbers. The time |
| 486 | 476 |
/// performance of this generator is comparable to the commonly used |
| 487 | 477 |
/// generators. |
| 488 | 478 |
/// |
| 489 | 479 |
/// This implementation is specialized for both 32-bit and 64-bit |
| 490 | 480 |
/// architectures. The generators differ sligthly in the |
| 491 | 481 |
/// initialization and generation phase so they produce two |
| 492 | 482 |
/// completly different sequences. |
| 493 | 483 |
/// |
| 494 | 484 |
/// The generator gives back random numbers of serveral types. To |
| 495 | 485 |
/// get a random number from a range of a floating point type you |
| 496 | 486 |
/// can use one form of the \c operator() or the \c real() member |
| 497 | 487 |
/// function. If you want to get random number from the {0, 1, ...,
|
| 498 | 488 |
/// n-1} integer range use the \c operator[] or the \c integer() |
| 499 | 489 |
/// method. And to get random number from the whole range of an |
| 500 | 490 |
/// integer type you can use the argumentless \c integer() or \c |
| 501 | 491 |
/// uinteger() functions. After all you can get random bool with |
| 502 | 492 |
/// equal chance of true and false or given probability of true |
| 503 | 493 |
/// result with the \c boolean() member functions. |
| 504 | 494 |
/// |
| 505 | 495 |
///\code |
| 506 | 496 |
/// // The commented code is identical to the other |
| 507 | 497 |
/// double a = rnd(); // [0.0, 1.0) |
| 508 | 498 |
/// // double a = rnd.real(); // [0.0, 1.0) |
| 509 | 499 |
/// double b = rnd(100.0); // [0.0, 100.0) |
| 510 | 500 |
/// // double b = rnd.real(100.0); // [0.0, 100.0) |
| 511 | 501 |
/// double c = rnd(1.0, 2.0); // [1.0, 2.0) |
| 512 | 502 |
/// // double c = rnd.real(1.0, 2.0); // [1.0, 2.0) |
| 513 | 503 |
/// int d = rnd[100000]; // 0..99999 |
| 514 | 504 |
/// // int d = rnd.integer(100000); // 0..99999 |
| 515 | 505 |
/// int e = rnd[6] + 1; // 1..6 |
| 516 | 506 |
/// // int e = rnd.integer(1, 1 + 6); // 1..6 |
| 517 | 507 |
/// int b = rnd.uinteger<int>(); // 0 .. 2^31 - 1 |
| 518 | 508 |
/// int c = rnd.integer<int>(); // - 2^31 .. 2^31 - 1 |
| 519 | 509 |
/// bool g = rnd.boolean(); // P(g = true) = 0.5 |
| 520 | 510 |
/// bool h = rnd.boolean(0.8); // P(h = true) = 0.8 |
| 521 | 511 |
///\endcode |
| 522 | 512 |
/// |
| 523 | 513 |
/// LEMON provides a global instance of the random number |
| 524 | 514 |
/// generator which name is \ref lemon::rnd "rnd". Usually it is a |
| 525 | 515 |
/// good programming convenience to use this global generator to get |
| 526 | 516 |
/// random numbers. |
| 527 | 517 |
class Random {
|
| 528 | 518 |
private: |
| 529 | 519 |
|
| 530 | 520 |
// Architecture word |
| 531 | 521 |
typedef unsigned long Word; |
| 532 | 522 |
|
| 533 | 523 |
_random_bits::RandomCore<Word> core; |
| 534 | 524 |
_random_bits::BoolProducer<Word> bool_producer; |
| 535 | 525 |
|
| 536 | 526 |
|
| 537 | 527 |
public: |
| 538 | 528 |
|
| 539 | 529 |
///\name Initialization |
| 540 | 530 |
/// |
| 541 | 531 |
/// @{
|
| 542 | 532 |
|
| 543 | 533 |
/// \brief Default constructor |
| 544 | 534 |
/// |
| 545 | 535 |
/// Constructor with constant seeding. |
| 546 | 536 |
Random() { core.initState(); }
|
| 547 | 537 |
|
| 548 | 538 |
/// \brief Constructor with seed |
| 549 | 539 |
/// |
| 550 | 540 |
/// Constructor with seed. The current number type will be converted |
| 551 | 541 |
/// to the architecture word type. |
| 552 | 542 |
template <typename Number> |
| 553 | 543 |
Random(Number seed) {
|
| 554 | 544 |
_random_bits::Initializer<Number, Word>::init(core, seed); |
| 555 | 545 |
} |
| 556 | 546 |
|
| 557 | 547 |
/// \brief Constructor with array seeding |
| 558 | 548 |
/// |
| 559 | 549 |
/// Constructor with array seeding. The given range should contain |
| 560 | 550 |
/// any number type and the numbers will be converted to the |
| 561 | 551 |
/// architecture word type. |
| 562 | 552 |
template <typename Iterator> |
| 563 | 553 |
Random(Iterator begin, Iterator end) {
|
| 564 | 554 |
typedef typename std::iterator_traits<Iterator>::value_type Number; |
| 565 | 555 |
_random_bits::Initializer<Number, Word>::init(core, begin, end); |
| 566 | 556 |
} |
| 567 | 557 |
|
| 568 | 558 |
/// \brief Copy constructor |
| 569 | 559 |
/// |
| 570 | 560 |
/// Copy constructor. The generated sequence will be identical to |
| 571 | 561 |
/// the other sequence. It can be used to save the current state |
| 572 | 562 |
/// of the generator and later use it to generate the same |
| 573 | 563 |
/// sequence. |
| 574 | 564 |
Random(const Random& other) {
|
| 575 | 565 |
core.copyState(other.core); |
| 576 | 566 |
} |
| 577 | 567 |
|
| 578 | 568 |
/// \brief Assign operator |
| 579 | 569 |
/// |
| 580 | 570 |
/// Assign operator. The generated sequence will be identical to |
| 581 | 571 |
/// the other sequence. It can be used to save the current state |
| 582 | 572 |
/// of the generator and later use it to generate the same |
| 583 | 573 |
/// sequence. |
| 584 | 574 |
Random& operator=(const Random& other) {
|
| 585 | 575 |
if (&other != this) {
|
| 586 | 576 |
core.copyState(other.core); |
| 587 | 577 |
} |
| 588 | 578 |
return *this; |
| 589 | 579 |
} |
| 590 | 580 |
|
| 591 | 581 |
/// \brief Seeding random sequence |
| 592 | 582 |
/// |
| 593 | 583 |
/// Seeding the random sequence. The current number type will be |
| 594 | 584 |
/// converted to the architecture word type. |
| 595 | 585 |
template <typename Number> |
| 596 | 586 |
void seed(Number seed) {
|
| 597 | 587 |
_random_bits::Initializer<Number, Word>::init(core, seed); |
| 598 | 588 |
} |
| 599 | 589 |
|
| 600 | 590 |
/// \brief Seeding random sequence |
| 601 | 591 |
/// |
| 602 | 592 |
/// Seeding the random sequence. The given range should contain |
| 603 | 593 |
/// any number type and the numbers will be converted to the |
| 604 | 594 |
/// architecture word type. |
| 605 | 595 |
template <typename Iterator> |
| 606 | 596 |
void seed(Iterator begin, Iterator end) {
|
| 607 | 597 |
typedef typename std::iterator_traits<Iterator>::value_type Number; |
| 608 | 598 |
_random_bits::Initializer<Number, Word>::init(core, begin, end); |
| 609 | 599 |
} |
| 610 | 600 |
|
| 611 | 601 |
/// \brief Seeding from file or from process id and time |
| 612 | 602 |
/// |
| 613 | 603 |
/// By default, this function calls the \c seedFromFile() member |
| 614 | 604 |
/// function with the <tt>/dev/urandom</tt> file. If it does not success, |
| 615 | 605 |
/// it uses the \c seedFromTime(). |
| 616 |
/// \return Currently always true. |
|
| 606 |
/// \return Currently always \c true. |
|
| 617 | 607 |
bool seed() {
|
| 618 | 608 |
#ifndef WIN32 |
| 619 | 609 |
if (seedFromFile("/dev/urandom", 0)) return true;
|
| 620 | 610 |
#endif |
| 621 | 611 |
if (seedFromTime()) return true; |
| 622 | 612 |
return false; |
| 623 | 613 |
} |
| 624 | 614 |
|
| 625 | 615 |
/// \brief Seeding from file |
| 626 | 616 |
/// |
| 627 | 617 |
/// Seeding the random sequence from file. The linux kernel has two |
| 628 | 618 |
/// devices, <tt>/dev/random</tt> and <tt>/dev/urandom</tt> which |
| 629 | 619 |
/// could give good seed values for pseudo random generators (The |
| 630 | 620 |
/// difference between two devices is that the <tt>random</tt> may |
| 631 | 621 |
/// block the reading operation while the kernel can give good |
| 632 | 622 |
/// source of randomness, while the <tt>urandom</tt> does not |
| 633 | 623 |
/// block the input, but it could give back bytes with worse |
| 634 | 624 |
/// entropy). |
| 635 | 625 |
/// \param file The source file |
| 636 | 626 |
/// \param offset The offset, from the file read. |
| 637 |
/// \return |
|
| 627 |
/// \return \c true when the seeding successes. |
|
| 638 | 628 |
#ifndef WIN32 |
| 639 | 629 |
bool seedFromFile(const std::string& file = "/dev/urandom", int offset = 0) |
| 640 | 630 |
#else |
| 641 | 631 |
bool seedFromFile(const std::string& file = "", int offset = 0) |
| 642 | 632 |
#endif |
| 643 | 633 |
{
|
| 644 | 634 |
std::ifstream rs(file.c_str()); |
| 645 | 635 |
const int size = 4; |
| 646 | 636 |
Word buf[size]; |
| 647 | 637 |
if (offset != 0 && !rs.seekg(offset)) return false; |
| 648 | 638 |
if (!rs.read(reinterpret_cast<char*>(buf), sizeof(buf))) return false; |
| 649 | 639 |
seed(buf, buf + size); |
| 650 | 640 |
return true; |
| 651 | 641 |
} |
| 652 | 642 |
|
| 653 | 643 |
/// \brief Seding from process id and time |
| 654 | 644 |
/// |
| 655 | 645 |
/// Seding from process id and time. This function uses the |
| 656 | 646 |
/// current process id and the current time for initialize the |
| 657 | 647 |
/// random sequence. |
| 658 |
/// \return Currently always true. |
|
| 648 |
/// \return Currently always \c true. |
|
| 659 | 649 |
bool seedFromTime() {
|
| 660 | 650 |
#ifndef WIN32 |
| 661 | 651 |
timeval tv; |
| 662 | 652 |
gettimeofday(&tv, 0); |
| 663 | 653 |
seed(getpid() + tv.tv_sec + tv.tv_usec); |
| 664 | 654 |
#else |
| 665 |
FILETIME time; |
|
| 666 |
GetSystemTimeAsFileTime(&time); |
|
| 667 |
seed( |
|
| 655 |
seed(bits::getWinRndSeed()); |
|
| 668 | 656 |
#endif |
| 669 | 657 |
return true; |
| 670 | 658 |
} |
| 671 | 659 |
|
| 672 | 660 |
/// @} |
| 673 | 661 |
|
| 674 |
///\name Uniform |
|
| 662 |
///\name Uniform Distributions |
|
| 675 | 663 |
/// |
| 676 | 664 |
/// @{
|
| 677 | 665 |
|
| 678 | 666 |
/// \brief Returns a random real number from the range [0, 1) |
| 679 | 667 |
/// |
| 680 | 668 |
/// It returns a random real number from the range [0, 1). The |
| 681 | 669 |
/// default Number type is \c double. |
| 682 | 670 |
template <typename Number> |
| 683 | 671 |
Number real() {
|
| 684 | 672 |
return _random_bits::RealConversion<Number, Word>::convert(core); |
| 685 | 673 |
} |
| 686 | 674 |
|
| 687 | 675 |
double real() {
|
| 688 | 676 |
return real<double>(); |
| 689 | 677 |
} |
| 690 | 678 |
|
| 691 | 679 |
/// \brief Returns a random real number from the range [0, 1) |
| 692 | 680 |
/// |
| 693 | 681 |
/// It returns a random double from the range [0, 1). |
| 694 | 682 |
double operator()() {
|
| 695 | 683 |
return real<double>(); |
| 696 | 684 |
} |
| 697 | 685 |
|
| 698 | 686 |
/// \brief Returns a random real number from the range [0, b) |
| 699 | 687 |
/// |
| 700 | 688 |
/// It returns a random real number from the range [0, b). |
| 701 | 689 |
double operator()(double b) {
|
| 702 | 690 |
return real<double>() * b; |
| 703 | 691 |
} |
| 704 | 692 |
|
| 705 | 693 |
/// \brief Returns a random real number from the range [a, b) |
| 706 | 694 |
/// |
| 707 | 695 |
/// It returns a random real number from the range [a, b). |
| 708 | 696 |
double operator()(double a, double b) {
|
| 709 | 697 |
return real<double>() * (b - a) + a; |
| 710 | 698 |
} |
| 711 | 699 |
|
| 712 | 700 |
/// \brief Returns a random integer from a range |
| 713 | 701 |
/// |
| 714 | 702 |
/// It returns a random integer from the range {0, 1, ..., b - 1}.
|
| 715 | 703 |
template <typename Number> |
| 716 | 704 |
Number integer(Number b) {
|
| 717 | 705 |
return _random_bits::Mapping<Number, Word>::map(core, b); |
| 718 | 706 |
} |
| 719 | 707 |
|
| 720 | 708 |
/// \brief Returns a random integer from a range |
| 721 | 709 |
/// |
| 722 | 710 |
/// It returns a random integer from the range {a, a + 1, ..., b - 1}.
|
| 723 | 711 |
template <typename Number> |
| 724 | 712 |
Number integer(Number a, Number b) {
|
| 725 | 713 |
return _random_bits::Mapping<Number, Word>::map(core, b - a) + a; |
| 726 | 714 |
} |
| 727 | 715 |
|
| 728 | 716 |
/// \brief Returns a random integer from a range |
| 729 | 717 |
/// |
| 730 | 718 |
/// It returns a random integer from the range {0, 1, ..., b - 1}.
|
| 731 | 719 |
template <typename Number> |
| 732 | 720 |
Number operator[](Number b) {
|
| 733 | 721 |
return _random_bits::Mapping<Number, Word>::map(core, b); |
| 734 | 722 |
} |
| 735 | 723 |
|
| 736 | 724 |
/// \brief Returns a random non-negative integer |
| 737 | 725 |
/// |
| 738 | 726 |
/// It returns a random non-negative integer uniformly from the |
| 739 | 727 |
/// whole range of the current \c Number type. The default result |
| 740 | 728 |
/// type of this function is <tt>unsigned int</tt>. |
| 741 | 729 |
template <typename Number> |
| 742 | 730 |
Number uinteger() {
|
| 743 | 731 |
return _random_bits::IntConversion<Number, Word>::convert(core); |
| 744 | 732 |
} |
| 745 | 733 |
|
| 746 | 734 |
unsigned int uinteger() {
|
| 747 | 735 |
return uinteger<unsigned int>(); |
| 748 | 736 |
} |
| 749 | 737 |
|
| 750 | 738 |
/// \brief Returns a random integer |
| 751 | 739 |
/// |
| 752 | 740 |
/// It returns a random integer uniformly from the whole range of |
| 753 | 741 |
/// the current \c Number type. The default result type of this |
| 754 | 742 |
/// function is \c int. |
| 755 | 743 |
template <typename Number> |
| 756 | 744 |
Number integer() {
|
| 757 | 745 |
static const int nb = std::numeric_limits<Number>::digits + |
| 758 | 746 |
(std::numeric_limits<Number>::is_signed ? 1 : 0); |
| 759 | 747 |
return _random_bits::IntConversion<Number, Word, nb>::convert(core); |
| 760 | 748 |
} |
| 761 | 749 |
|
| 762 | 750 |
int integer() {
|
| 763 | 751 |
return integer<int>(); |
| 764 | 752 |
} |
| 765 | 753 |
|
| 766 | 754 |
/// \brief Returns a random bool |
| 767 | 755 |
/// |
| 768 | 756 |
/// It returns a random bool. The generator holds a buffer for |
| 769 | 757 |
/// random bits. Every time when it become empty the generator makes |
| 770 | 758 |
/// a new random word and fill the buffer up. |
| 771 | 759 |
bool boolean() {
|
| 772 | 760 |
return bool_producer.convert(core); |
| 773 | 761 |
} |
| 774 | 762 |
|
| 775 | 763 |
/// @} |
| 776 | 764 |
|
| 777 |
///\name Non-uniform |
|
| 765 |
///\name Non-uniform Distributions |
|
| 778 | 766 |
/// |
| 779 | 767 |
///@{
|
| 780 | 768 |
|
| 781 | 769 |
/// \brief Returns a random bool with given probability of true result. |
| 782 | 770 |
/// |
| 783 | 771 |
/// It returns a random bool with given probability of true result. |
| 784 | 772 |
bool boolean(double p) {
|
| 785 | 773 |
return operator()() < p; |
| 786 | 774 |
} |
| 787 | 775 |
|
| 788 | 776 |
/// Standard normal (Gauss) distribution |
| 789 | 777 |
|
| 790 | 778 |
/// Standard normal (Gauss) distribution. |
| 791 | 779 |
/// \note The Cartesian form of the Box-Muller |
| 792 | 780 |
/// transformation is used to generate a random normal distribution. |
| 793 | 781 |
double gauss() |
| 794 | 782 |
{
|
| 795 | 783 |
double V1,V2,S; |
| 796 | 784 |
do {
|
| 797 | 785 |
V1=2*real<double>()-1; |
| 798 | 786 |
V2=2*real<double>()-1; |
| 799 | 787 |
S=V1*V1+V2*V2; |
| 800 | 788 |
} while(S>=1); |
| 801 | 789 |
return std::sqrt(-2*std::log(S)/S)*V1; |
| 802 | 790 |
} |
| 803 | 791 |
/// Normal (Gauss) distribution with given mean and standard deviation |
| 804 | 792 |
|
| 805 | 793 |
/// Normal (Gauss) distribution with given mean and standard deviation. |
| 806 | 794 |
/// \sa gauss() |
| 807 | 795 |
double gauss(double mean,double std_dev) |
| 808 | 796 |
{
|
| 809 | 797 |
return gauss()*std_dev+mean; |
| 810 | 798 |
} |
| 811 | 799 |
|
| 812 | 800 |
/// Lognormal distribution |
| 813 | 801 |
|
| 814 | 802 |
/// Lognormal distribution. The parameters are the mean and the standard |
| 815 | 803 |
/// deviation of <tt>exp(X)</tt>. |
| 816 | 804 |
/// |
| 817 | 805 |
double lognormal(double n_mean,double n_std_dev) |
| 818 | 806 |
{
|
| 819 | 807 |
return std::exp(gauss(n_mean,n_std_dev)); |
| 820 | 808 |
} |
| 821 | 809 |
/// Lognormal distribution |
| 822 | 810 |
|
| 823 | 811 |
/// Lognormal distribution. The parameter is an <tt>std::pair</tt> of |
| 824 | 812 |
/// the mean and the standard deviation of <tt>exp(X)</tt>. |
| 825 | 813 |
/// |
| 826 | 814 |
double lognormal(const std::pair<double,double> ¶ms) |
| 827 | 815 |
{
|
| 828 | 816 |
return std::exp(gauss(params.first,params.second)); |
| 829 | 817 |
} |
| 830 | 818 |
/// Compute the lognormal parameters from mean and standard deviation |
| 831 | 819 |
|
| 832 | 820 |
/// This function computes the lognormal parameters from mean and |
| 833 | 821 |
/// standard deviation. The return value can direcly be passed to |
| 834 | 822 |
/// lognormal(). |
| 835 | 823 |
std::pair<double,double> lognormalParamsFromMD(double mean, |
| 836 | 824 |
double std_dev) |
| 837 | 825 |
{
|
| 838 | 826 |
double fr=std_dev/mean; |
| 839 | 827 |
fr*=fr; |
| 840 | 828 |
double lg=std::log(1+fr); |
| 841 | 829 |
return std::pair<double,double>(std::log(mean)-lg/2.0,std::sqrt(lg)); |
| 842 | 830 |
} |
| 843 | 831 |
/// Lognormal distribution with given mean and standard deviation |
| 844 | 832 |
|
| 845 | 833 |
/// Lognormal distribution with given mean and standard deviation. |
| 846 | 834 |
/// |
| 847 | 835 |
double lognormalMD(double mean,double std_dev) |
| 848 | 836 |
{
|
| 849 | 837 |
return lognormal(lognormalParamsFromMD(mean,std_dev)); |
| 850 | 838 |
} |
| 851 | 839 |
|
| 852 | 840 |
/// Exponential distribution with given mean |
| 853 | 841 |
|
| 854 | 842 |
/// This function generates an exponential distribution random number |
| 855 | 843 |
/// with mean <tt>1/lambda</tt>. |
| 856 | 844 |
/// |
| 857 | 845 |
double exponential(double lambda=1.0) |
| 858 | 846 |
{
|
| 859 | 847 |
return -std::log(1.0-real<double>())/lambda; |
| 860 | 848 |
} |
| 861 | 849 |
|
| 862 | 850 |
/// Gamma distribution with given integer shape |
| 863 | 851 |
|
| 864 | 852 |
/// This function generates a gamma distribution random number. |
| 865 | 853 |
/// |
| 866 | 854 |
///\param k shape parameter (<tt>k>0</tt> integer) |
| 867 | 855 |
double gamma(int k) |
| 868 | 856 |
{
|
| 869 | 857 |
double s = 0; |
| 870 | 858 |
for(int i=0;i<k;i++) s-=std::log(1.0-real<double>()); |
| 871 | 859 |
return s; |
| 872 | 860 |
} |
| 873 | 861 |
|
| 874 | 862 |
/// Gamma distribution with given shape and scale parameter |
| 875 | 863 |
|
| 876 | 864 |
/// This function generates a gamma distribution random number. |
| 877 | 865 |
/// |
| 878 | 866 |
///\param k shape parameter (<tt>k>0</tt>) |
| 879 | 867 |
///\param theta scale parameter |
| 880 | 868 |
/// |
| 881 | 869 |
double gamma(double k,double theta=1.0) |
| 882 | 870 |
{
|
| 883 | 871 |
double xi,nu; |
| 884 | 872 |
const double delta = k-std::floor(k); |
| 885 | 873 |
const double v0=E/(E-delta); |
| 886 | 874 |
do {
|
| 887 | 875 |
double V0=1.0-real<double>(); |
| 888 | 876 |
double V1=1.0-real<double>(); |
| 889 | 877 |
double V2=1.0-real<double>(); |
| 890 | 878 |
if(V2<=v0) |
| 891 | 879 |
{
|
| 892 | 880 |
xi=std::pow(V1,1.0/delta); |
| 893 | 881 |
nu=V0*std::pow(xi,delta-1.0); |
| 894 | 882 |
} |
| 895 | 883 |
else |
| 896 | 884 |
{
|
| 897 | 885 |
xi=1.0-std::log(V1); |
| 898 | 886 |
nu=V0*std::exp(-xi); |
| 899 | 887 |
} |
| 900 | 888 |
} while(nu>std::pow(xi,delta-1.0)*std::exp(-xi)); |
| 901 | 889 |
return theta*(xi+gamma(int(std::floor(k)))); |
| 902 | 890 |
} |
| 903 | 891 |
|
| 904 | 892 |
/// Weibull distribution |
| 905 | 893 |
|
| 906 | 894 |
/// This function generates a Weibull distribution random number. |
| 907 | 895 |
/// |
| 908 | 896 |
///\param k shape parameter (<tt>k>0</tt>) |
| 909 | 897 |
///\param lambda scale parameter (<tt>lambda>0</tt>) |
| 910 | 898 |
/// |
| 911 | 899 |
double weibull(double k,double lambda) |
| 912 | 900 |
{
|
| 913 | 901 |
return lambda*pow(-std::log(1.0-real<double>()),1.0/k); |
| 914 | 902 |
} |
| 915 | 903 |
|
| 916 | 904 |
/// Pareto distribution |
| 917 | 905 |
|
| 918 | 906 |
/// This function generates a Pareto distribution random number. |
| 919 | 907 |
/// |
| 920 | 908 |
///\param k shape parameter (<tt>k>0</tt>) |
| 921 | 909 |
///\param x_min location parameter (<tt>x_min>0</tt>) |
| 922 | 910 |
/// |
| 923 | 911 |
double pareto(double k,double x_min) |
| 924 | 912 |
{
|
| 925 | 913 |
return exponential(gamma(k,1.0/x_min))+x_min; |
| 926 | 914 |
} |
| 927 | 915 |
|
| 928 | 916 |
/// Poisson distribution |
| 929 | 917 |
|
| 930 | 918 |
/// This function generates a Poisson distribution random number with |
| 931 | 919 |
/// parameter \c lambda. |
| 932 | 920 |
/// |
| 933 | 921 |
/// The probability mass function of this distribusion is |
| 934 | 922 |
/// \f[ \frac{e^{-\lambda}\lambda^k}{k!} \f]
|
| 935 | 923 |
/// \note The algorithm is taken from the book of Donald E. Knuth titled |
| 936 | 924 |
/// ''Seminumerical Algorithms'' (1969). Its running time is linear in the |
| 937 | 925 |
/// return value. |
| 938 | 926 |
|
| 939 | 927 |
int poisson(double lambda) |
| 940 | 928 |
{
|
| 941 | 929 |
const double l = std::exp(-lambda); |
| 942 | 930 |
int k=0; |
| 943 | 931 |
double p = 1.0; |
| 944 | 932 |
do {
|
| 945 | 933 |
k++; |
| 946 | 934 |
p*=real<double>(); |
| 947 | 935 |
} while (p>=l); |
| 948 | 936 |
return k-1; |
| 949 | 937 |
} |
| 950 | 938 |
|
| 951 | 939 |
///@} |
| 952 | 940 |
|
| 953 |
///\name Two |
|
| 941 |
///\name Two Dimensional Distributions |
|
| 954 | 942 |
/// |
| 955 | 943 |
///@{
|
| 956 | 944 |
|
| 957 | 945 |
/// Uniform distribution on the full unit circle |
| 958 | 946 |
|
| 959 | 947 |
/// Uniform distribution on the full unit circle. |
| 960 | 948 |
/// |
| 961 | 949 |
dim2::Point<double> disc() |
| 962 | 950 |
{
|
| 963 | 951 |
double V1,V2; |
| 964 | 952 |
do {
|
| 965 | 953 |
V1=2*real<double>()-1; |
| 966 | 954 |
V2=2*real<double>()-1; |
| 967 | 955 |
|
| 968 | 956 |
} while(V1*V1+V2*V2>=1); |
| 969 | 957 |
return dim2::Point<double>(V1,V2); |
| 970 | 958 |
} |
| 971 | 959 |
/// A kind of two dimensional normal (Gauss) distribution |
| 972 | 960 |
|
| 973 | 961 |
/// This function provides a turning symmetric two-dimensional distribution. |
| 974 | 962 |
/// Both coordinates are of standard normal distribution, but they are not |
| 975 | 963 |
/// independent. |
| 976 | 964 |
/// |
| 977 | 965 |
/// \note The coordinates are the two random variables provided by |
| 978 | 966 |
/// the Box-Muller method. |
| 979 | 967 |
dim2::Point<double> gauss2() |
| 980 | 968 |
{
|
| 981 | 969 |
double V1,V2,S; |
| 982 | 970 |
do {
|
| 983 | 971 |
V1=2*real<double>()-1; |
| 984 | 972 |
V2=2*real<double>()-1; |
| 985 | 973 |
S=V1*V1+V2*V2; |
| 986 | 974 |
} while(S>=1); |
| 987 | 975 |
double W=std::sqrt(-2*std::log(S)/S); |
| 988 | 976 |
return dim2::Point<double>(W*V1,W*V2); |
| 989 | 977 |
} |
| 990 | 978 |
/// A kind of two dimensional exponential distribution |
| 991 | 979 |
|
| 992 | 980 |
/// This function provides a turning symmetric two-dimensional distribution. |
| 993 | 981 |
/// The x-coordinate is of conditionally exponential distribution |
| 994 | 982 |
/// with the condition that x is positive and y=0. If x is negative and |
| 995 | 983 |
/// y=0 then, -x is of exponential distribution. The same is true for the |
| 996 | 984 |
/// y-coordinate. |
| 997 | 985 |
dim2::Point<double> exponential2() |
| 998 | 986 |
{
|
| 999 | 987 |
double V1,V2,S; |
| 1000 | 988 |
do {
|
| 1001 | 989 |
V1=2*real<double>()-1; |
| 1002 | 990 |
V2=2*real<double>()-1; |
| 1003 | 991 |
S=V1*V1+V2*V2; |
| 1004 | 992 |
} while(S>=1); |
| 1005 | 993 |
double W=-std::log(S)/S; |
| 1006 | 994 |
return dim2::Point<double>(W*V1,W*V2); |
| 1007 | 995 |
} |
| 1008 | 996 |
|
| 1009 | 997 |
///@} |
| 1010 | 998 |
}; |
| 1011 | 999 |
|
| 1012 | 1000 |
|
| 1013 | 1001 |
extern Random rnd; |
| 1014 | 1002 |
|
| 1015 | 1003 |
} |
| 1016 | 1004 |
|
| 1017 | 1005 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_SMART_GRAPH_H |
| 20 | 20 |
#define LEMON_SMART_GRAPH_H |
| 21 | 21 |
|
| 22 | 22 |
///\ingroup graphs |
| 23 | 23 |
///\file |
| 24 | 24 |
///\brief SmartDigraph and SmartGraph classes. |
| 25 | 25 |
|
| 26 | 26 |
#include <vector> |
| 27 | 27 |
|
| 28 | 28 |
#include <lemon/core.h> |
| 29 | 29 |
#include <lemon/error.h> |
| 30 | 30 |
#include <lemon/bits/graph_extender.h> |
| 31 | 31 |
|
| 32 | 32 |
namespace lemon {
|
| 33 | 33 |
|
| 34 | 34 |
class SmartDigraph; |
| 35 |
///Base of SmartDigraph |
|
| 36 | 35 |
|
| 37 |
///Base of SmartDigraph |
|
| 38 |
/// |
|
| 39 | 36 |
class SmartDigraphBase {
|
| 40 | 37 |
protected: |
| 41 | 38 |
|
| 42 | 39 |
struct NodeT |
| 43 | 40 |
{
|
| 44 | 41 |
int first_in, first_out; |
| 45 | 42 |
NodeT() {}
|
| 46 | 43 |
}; |
| 47 | 44 |
struct ArcT |
| 48 | 45 |
{
|
| 49 | 46 |
int target, source, next_in, next_out; |
| 50 | 47 |
ArcT() {}
|
| 51 | 48 |
}; |
| 52 | 49 |
|
| 53 | 50 |
std::vector<NodeT> nodes; |
| 54 | 51 |
std::vector<ArcT> arcs; |
| 55 | 52 |
|
| 56 | 53 |
public: |
| 57 | 54 |
|
| 58 |
typedef SmartDigraphBase |
|
| 55 |
typedef SmartDigraphBase Digraph; |
|
| 59 | 56 |
|
| 60 | 57 |
class Node; |
| 61 | 58 |
class Arc; |
| 62 | 59 |
|
| 63 | 60 |
public: |
| 64 | 61 |
|
| 65 | 62 |
SmartDigraphBase() : nodes(), arcs() { }
|
| 66 | 63 |
SmartDigraphBase(const SmartDigraphBase &_g) |
| 67 | 64 |
: nodes(_g.nodes), arcs(_g.arcs) { }
|
| 68 | 65 |
|
| 69 | 66 |
typedef True NodeNumTag; |
| 70 | 67 |
typedef True ArcNumTag; |
| 71 | 68 |
|
| 72 | 69 |
int nodeNum() const { return nodes.size(); }
|
| 73 | 70 |
int arcNum() const { return arcs.size(); }
|
| 74 | 71 |
|
| 75 | 72 |
int maxNodeId() const { return nodes.size()-1; }
|
| 76 | 73 |
int maxArcId() const { return arcs.size()-1; }
|
| 77 | 74 |
|
| 78 | 75 |
Node addNode() {
|
| 79 | 76 |
int n = nodes.size(); |
| 80 | 77 |
nodes.push_back(NodeT()); |
| 81 | 78 |
nodes[n].first_in = -1; |
| 82 | 79 |
nodes[n].first_out = -1; |
| 83 | 80 |
return Node(n); |
| 84 | 81 |
} |
| 85 | 82 |
|
| 86 | 83 |
Arc addArc(Node u, Node v) {
|
| 87 | 84 |
int n = arcs.size(); |
| 88 | 85 |
arcs.push_back(ArcT()); |
| 89 | 86 |
arcs[n].source = u._id; |
| 90 | 87 |
arcs[n].target = v._id; |
| 91 | 88 |
arcs[n].next_out = nodes[u._id].first_out; |
| 92 | 89 |
arcs[n].next_in = nodes[v._id].first_in; |
| 93 | 90 |
nodes[u._id].first_out = nodes[v._id].first_in = n; |
| 94 | 91 |
|
| 95 | 92 |
return Arc(n); |
| 96 | 93 |
} |
| 97 | 94 |
|
| 98 | 95 |
void clear() {
|
| 99 | 96 |
arcs.clear(); |
| 100 | 97 |
nodes.clear(); |
| 101 | 98 |
} |
| 102 | 99 |
|
| 103 | 100 |
Node source(Arc a) const { return Node(arcs[a._id].source); }
|
| 104 | 101 |
Node target(Arc a) const { return Node(arcs[a._id].target); }
|
| 105 | 102 |
|
| 106 | 103 |
static int id(Node v) { return v._id; }
|
| 107 | 104 |
static int id(Arc a) { return a._id; }
|
| 108 | 105 |
|
| 109 | 106 |
static Node nodeFromId(int id) { return Node(id);}
|
| 110 | 107 |
static Arc arcFromId(int id) { return Arc(id);}
|
| 111 | 108 |
|
| 112 | 109 |
bool valid(Node n) const {
|
| 113 | 110 |
return n._id >= 0 && n._id < static_cast<int>(nodes.size()); |
| 114 | 111 |
} |
| 115 | 112 |
bool valid(Arc a) const {
|
| 116 | 113 |
return a._id >= 0 && a._id < static_cast<int>(arcs.size()); |
| 117 | 114 |
} |
| 118 | 115 |
|
| 119 | 116 |
class Node {
|
| 120 | 117 |
friend class SmartDigraphBase; |
| 121 | 118 |
friend class SmartDigraph; |
| 122 | 119 |
|
| 123 | 120 |
protected: |
| 124 | 121 |
int _id; |
| 125 | 122 |
explicit Node(int id) : _id(id) {}
|
| 126 | 123 |
public: |
| 127 | 124 |
Node() {}
|
| 128 | 125 |
Node (Invalid) : _id(-1) {}
|
| 129 | 126 |
bool operator==(const Node i) const {return _id == i._id;}
|
| 130 | 127 |
bool operator!=(const Node i) const {return _id != i._id;}
|
| 131 | 128 |
bool operator<(const Node i) const {return _id < i._id;}
|
| 132 | 129 |
}; |
| 133 | 130 |
|
| 134 | 131 |
|
| 135 | 132 |
class Arc {
|
| 136 | 133 |
friend class SmartDigraphBase; |
| 137 | 134 |
friend class SmartDigraph; |
| 138 | 135 |
|
| 139 | 136 |
protected: |
| 140 | 137 |
int _id; |
| 141 | 138 |
explicit Arc(int id) : _id(id) {}
|
| 142 | 139 |
public: |
| 143 | 140 |
Arc() { }
|
| 144 | 141 |
Arc (Invalid) : _id(-1) {}
|
| 145 | 142 |
bool operator==(const Arc i) const {return _id == i._id;}
|
| 146 | 143 |
bool operator!=(const Arc i) const {return _id != i._id;}
|
| 147 | 144 |
bool operator<(const Arc i) const {return _id < i._id;}
|
| 148 | 145 |
}; |
| 149 | 146 |
|
| 150 | 147 |
void first(Node& node) const {
|
| 151 | 148 |
node._id = nodes.size() - 1; |
| 152 | 149 |
} |
| 153 | 150 |
|
| 154 | 151 |
static void next(Node& node) {
|
| 155 | 152 |
--node._id; |
| 156 | 153 |
} |
| 157 | 154 |
|
| 158 | 155 |
void first(Arc& arc) const {
|
| 159 | 156 |
arc._id = arcs.size() - 1; |
| 160 | 157 |
} |
| 161 | 158 |
|
| 162 | 159 |
static void next(Arc& arc) {
|
| 163 | 160 |
--arc._id; |
| 164 | 161 |
} |
| 165 | 162 |
|
| 166 | 163 |
void firstOut(Arc& arc, const Node& node) const {
|
| 167 | 164 |
arc._id = nodes[node._id].first_out; |
| 168 | 165 |
} |
| 169 | 166 |
|
| 170 | 167 |
void nextOut(Arc& arc) const {
|
| 171 | 168 |
arc._id = arcs[arc._id].next_out; |
| 172 | 169 |
} |
| 173 | 170 |
|
| 174 | 171 |
void firstIn(Arc& arc, const Node& node) const {
|
| 175 | 172 |
arc._id = nodes[node._id].first_in; |
| 176 | 173 |
} |
| 177 | 174 |
|
| 178 | 175 |
void nextIn(Arc& arc) const {
|
| 179 | 176 |
arc._id = arcs[arc._id].next_in; |
| 180 | 177 |
} |
| 181 | 178 |
|
| 182 | 179 |
}; |
| 183 | 180 |
|
| 184 | 181 |
typedef DigraphExtender<SmartDigraphBase> ExtendedSmartDigraphBase; |
| 185 | 182 |
|
| 186 | 183 |
///\ingroup graphs |
| 187 | 184 |
/// |
| 188 | 185 |
///\brief A smart directed graph class. |
| 189 | 186 |
/// |
| 190 |
///This is a simple and fast digraph implementation. |
|
| 191 |
///It is also quite memory efficient, but at the price |
|
| 192 |
///that <b> it does support only limited (only stack-like) |
|
| 193 |
///node and arc deletions</b>. |
|
| 194 |
///It conforms to the \ref concepts::Digraph "Digraph concept" with |
|
| 195 |
///an important extra feature that its maps are real \ref |
|
| 196 |
/// |
|
| 187 |
///\ref SmartDigraph is a simple and fast digraph implementation. |
|
| 188 |
///It is also quite memory efficient but at the price |
|
| 189 |
///that it does not support node and arc deletion |
|
| 190 |
///(except for the Snapshot feature). |
|
| 197 | 191 |
/// |
| 198 |
///\ |
|
| 192 |
///This type fully conforms to the \ref concepts::Digraph "Digraph concept" |
|
| 193 |
///and it also provides some additional functionalities. |
|
| 194 |
///Most of its member functions and nested classes are documented |
|
| 195 |
///only in the concept class. |
|
| 196 |
/// |
|
| 197 |
///\sa concepts::Digraph |
|
| 198 |
///\sa SmartGraph |
|
| 199 | 199 |
class SmartDigraph : public ExtendedSmartDigraphBase {
|
| 200 |
public: |
|
| 201 |
|
|
| 202 | 200 |
typedef ExtendedSmartDigraphBase Parent; |
| 203 | 201 |
|
| 204 | 202 |
private: |
| 205 |
|
|
| 206 |
///SmartDigraph is \e not copy constructible. Use DigraphCopy() instead. |
|
| 207 |
|
|
| 208 |
///SmartDigraph is \e not copy constructible. Use DigraphCopy() instead. |
|
| 209 |
/// |
|
| 203 |
/// Digraphs are \e not copy constructible. Use DigraphCopy instead. |
|
| 210 | 204 |
SmartDigraph(const SmartDigraph &) : ExtendedSmartDigraphBase() {};
|
| 211 |
///\brief Assignment of SmartDigraph to another one is \e not allowed. |
|
| 212 |
///Use DigraphCopy() instead. |
|
| 213 |
|
|
| 214 |
///Assignment of SmartDigraph to another one is \e not allowed. |
|
| 215 |
/// |
|
| 205 |
/// \brief Assignment of a digraph to another one is \e not allowed. |
|
| 206 |
/// Use DigraphCopy instead. |
|
| 216 | 207 |
void operator=(const SmartDigraph &) {}
|
| 217 | 208 |
|
| 218 | 209 |
public: |
| 219 | 210 |
|
| 220 | 211 |
/// Constructor |
| 221 | 212 |
|
| 222 | 213 |
/// Constructor. |
| 223 | 214 |
/// |
| 224 | 215 |
SmartDigraph() {};
|
| 225 | 216 |
|
| 226 | 217 |
///Add a new node to the digraph. |
| 227 | 218 |
|
| 228 |
/// \return the new node. |
|
| 229 |
/// |
|
| 219 |
///This function adds a new node to the digraph. |
|
| 220 |
///\return The new node. |
|
| 230 | 221 |
Node addNode() { return Parent::addNode(); }
|
| 231 | 222 |
|
| 232 | 223 |
///Add a new arc to the digraph. |
| 233 | 224 |
|
| 234 |
/// |
|
| 225 |
///This function adds a new arc to the digraph with source node \c s |
|
| 235 | 226 |
///and target node \c t. |
| 236 |
///\return the new arc. |
|
| 237 |
Arc addArc(const Node& s, const Node& t) {
|
|
| 227 |
///\return The new arc. |
|
| 228 |
Arc addArc(Node s, Node t) {
|
|
| 238 | 229 |
return Parent::addArc(s, t); |
| 239 | 230 |
} |
| 240 | 231 |
|
| 241 |
/// \brief Using this it is possible to avoid the superfluous memory |
|
| 242 |
/// allocation. |
|
| 243 |
|
|
| 244 |
/// Using this it is possible to avoid the superfluous memory |
|
| 245 |
/// allocation: if you know that the digraph you want to build will |
|
| 246 |
/// be very large (e.g. it will contain millions of nodes and/or arcs) |
|
| 247 |
/// then it is worth reserving space for this amount before starting |
|
| 248 |
/// to build the digraph. |
|
| 249 |
/// \sa reserveArc |
|
| 250 |
void reserveNode(int n) { nodes.reserve(n); };
|
|
| 251 |
|
|
| 252 |
/// \brief Using this it is possible to avoid the superfluous memory |
|
| 253 |
/// allocation. |
|
| 254 |
|
|
| 255 |
/// Using this it is possible to avoid the superfluous memory |
|
| 256 |
/// allocation: if you know that the digraph you want to build will |
|
| 257 |
/// be very large (e.g. it will contain millions of nodes and/or arcs) |
|
| 258 |
/// then it is worth reserving space for this amount before starting |
|
| 259 |
/// to build the digraph. |
|
| 260 |
/// \sa reserveNode |
|
| 261 |
void reserveArc(int m) { arcs.reserve(m); };
|
|
| 262 |
|
|
| 263 | 232 |
/// \brief Node validity check |
| 264 | 233 |
/// |
| 265 |
/// This function gives back true if the given node is valid, |
|
| 266 |
/// ie. it is a real node of the graph. |
|
| 234 |
/// This function gives back \c true if the given node is valid, |
|
| 235 |
/// i.e. it is a real node of the digraph. |
|
| 267 | 236 |
/// |
| 268 | 237 |
/// \warning A removed node (using Snapshot) could become valid again |
| 269 |
/// |
|
| 238 |
/// if new nodes are added to the digraph. |
|
| 270 | 239 |
bool valid(Node n) const { return Parent::valid(n); }
|
| 271 | 240 |
|
| 272 | 241 |
/// \brief Arc validity check |
| 273 | 242 |
/// |
| 274 |
/// This function gives back true if the given arc is valid, |
|
| 275 |
/// ie. it is a real arc of the graph. |
|
| 243 |
/// This function gives back \c true if the given arc is valid, |
|
| 244 |
/// i.e. it is a real arc of the digraph. |
|
| 276 | 245 |
/// |
| 277 | 246 |
/// \warning A removed arc (using Snapshot) could become valid again |
| 278 |
/// |
|
| 247 |
/// if new arcs are added to the graph. |
|
| 279 | 248 |
bool valid(Arc a) const { return Parent::valid(a); }
|
| 280 | 249 |
|
| 281 |
///Clear the digraph. |
|
| 282 |
|
|
| 283 |
///Erase all the nodes and arcs from the digraph. |
|
| 284 |
/// |
|
| 285 |
void clear() {
|
|
| 286 |
Parent::clear(); |
|
| 287 |
} |
|
| 288 |
|
|
| 289 | 250 |
///Split a node. |
| 290 | 251 |
|
| 291 |
///This function splits a node. First a new node is added to the digraph, |
|
| 292 |
///then the source of each outgoing arc of \c n is moved to this new node. |
|
| 293 |
///If \c connect is \c true (this is the default value), then a new arc |
|
| 294 |
///from \c n to the newly created node is also added. |
|
| 252 |
///This function splits the given node. First, a new node is added |
|
| 253 |
///to the digraph, then the source of each outgoing arc of node \c n |
|
| 254 |
///is moved to this new node. |
|
| 255 |
///If the second parameter \c connect is \c true (this is the default |
|
| 256 |
///value), then a new arc from node \c n to the newly created node |
|
| 257 |
///is also added. |
|
| 295 | 258 |
///\return The newly created node. |
| 296 | 259 |
/// |
| 297 |
///\note The <tt>Arc</tt>s |
|
| 298 |
///referencing a moved arc remain |
|
| 299 |
///valid. However <tt>InArc</tt>'s and <tt>OutArc</tt>'s |
|
| 300 |
///may be invalidated. |
|
| 260 |
///\note All iterators remain valid. |
|
| 261 |
/// |
|
| 301 | 262 |
///\warning This functionality cannot be used together with the Snapshot |
| 302 | 263 |
///feature. |
| 303 | 264 |
Node split(Node n, bool connect = true) |
| 304 | 265 |
{
|
| 305 | 266 |
Node b = addNode(); |
| 306 | 267 |
nodes[b._id].first_out=nodes[n._id].first_out; |
| 307 | 268 |
nodes[n._id].first_out=-1; |
| 308 | 269 |
for(int i=nodes[b._id].first_out; i!=-1; i=arcs[i].next_out) {
|
| 309 | 270 |
arcs[i].source=b._id; |
| 310 | 271 |
} |
| 311 | 272 |
if(connect) addArc(n,b); |
| 312 | 273 |
return b; |
| 313 | 274 |
} |
| 314 | 275 |
|
| 276 |
///Clear the digraph. |
|
| 277 |
|
|
| 278 |
///This function erases all nodes and arcs from the digraph. |
|
| 279 |
/// |
|
| 280 |
void clear() {
|
|
| 281 |
Parent::clear(); |
|
| 282 |
} |
|
| 283 |
|
|
| 284 |
/// Reserve memory for nodes. |
|
| 285 |
|
|
| 286 |
/// Using this function, it is possible to avoid superfluous memory |
|
| 287 |
/// allocation: if you know that the digraph you want to build will |
|
| 288 |
/// be large (e.g. it will contain millions of nodes and/or arcs), |
|
| 289 |
/// then it is worth reserving space for this amount before starting |
|
| 290 |
/// to build the digraph. |
|
| 291 |
/// \sa reserveArc() |
|
| 292 |
void reserveNode(int n) { nodes.reserve(n); };
|
|
| 293 |
|
|
| 294 |
/// Reserve memory for arcs. |
|
| 295 |
|
|
| 296 |
/// Using this function, it is possible to avoid superfluous memory |
|
| 297 |
/// allocation: if you know that the digraph you want to build will |
|
| 298 |
/// be large (e.g. it will contain millions of nodes and/or arcs), |
|
| 299 |
/// then it is worth reserving space for this amount before starting |
|
| 300 |
/// to build the digraph. |
|
| 301 |
/// \sa reserveNode() |
|
| 302 |
void reserveArc(int m) { arcs.reserve(m); };
|
|
| 303 |
|
|
| 315 | 304 |
public: |
| 316 | 305 |
|
| 317 | 306 |
class Snapshot; |
| 318 | 307 |
|
| 319 | 308 |
protected: |
| 320 | 309 |
|
| 321 | 310 |
void restoreSnapshot(const Snapshot &s) |
| 322 | 311 |
{
|
| 323 | 312 |
while(s.arc_num<arcs.size()) {
|
| 324 | 313 |
Arc arc = arcFromId(arcs.size()-1); |
| 325 | 314 |
Parent::notifier(Arc()).erase(arc); |
| 326 | 315 |
nodes[arcs.back().source].first_out=arcs.back().next_out; |
| 327 | 316 |
nodes[arcs.back().target].first_in=arcs.back().next_in; |
| 328 | 317 |
arcs.pop_back(); |
| 329 | 318 |
} |
| 330 | 319 |
while(s.node_num<nodes.size()) {
|
| 331 | 320 |
Node node = nodeFromId(nodes.size()-1); |
| 332 | 321 |
Parent::notifier(Node()).erase(node); |
| 333 | 322 |
nodes.pop_back(); |
| 334 | 323 |
} |
| 335 | 324 |
} |
| 336 | 325 |
|
| 337 | 326 |
public: |
| 338 | 327 |
|
| 339 |
///Class to make a snapshot of the digraph and to |
|
| 328 |
///Class to make a snapshot of the digraph and to restore it later. |
|
| 340 | 329 |
|
| 341 |
///Class to make a snapshot of the digraph and to |
|
| 330 |
///Class to make a snapshot of the digraph and to restore it later. |
|
| 342 | 331 |
/// |
| 343 | 332 |
///The newly added nodes and arcs can be removed using the |
| 344 |
///restore() function. |
|
| 345 |
///\note After you restore a state, you cannot restore |
|
| 346 |
///a later state, in other word you cannot add again the arcs deleted |
|
| 347 |
///by restore() using another one Snapshot instance. |
|
| 333 |
///restore() function. This is the only way for deleting nodes and/or |
|
| 334 |
///arcs from a SmartDigraph structure. |
|
| 348 | 335 |
/// |
| 349 |
///\warning If you do not use correctly the snapshot that can cause |
|
| 350 |
///either broken program, invalid state of the digraph, valid but |
|
| 351 |
///not the restored digraph or no change. Because the runtime performance |
|
| 352 |
///the validity of the snapshot is not stored. |
|
| 336 |
///\note After a state is restored, you cannot restore a later state, |
|
| 337 |
///i.e. you cannot add the removed nodes and arcs again using |
|
| 338 |
///another Snapshot instance. |
|
| 339 |
/// |
|
| 340 |
///\warning Node splitting cannot be restored. |
|
| 341 |
///\warning The validity of the snapshot is not stored due to |
|
| 342 |
///performance reasons. If you do not use the snapshot correctly, |
|
| 343 |
///it can cause broken program, invalid or not restored state of |
|
| 344 |
///the digraph or no change. |
|
| 353 | 345 |
class Snapshot |
| 354 | 346 |
{
|
| 355 | 347 |
SmartDigraph *_graph; |
| 356 | 348 |
protected: |
| 357 | 349 |
friend class SmartDigraph; |
| 358 | 350 |
unsigned int node_num; |
| 359 | 351 |
unsigned int arc_num; |
| 360 | 352 |
public: |
| 361 | 353 |
///Default constructor. |
| 362 | 354 |
|
| 363 | 355 |
///Default constructor. |
| 364 |
///To actually make a snapshot you must call save(). |
|
| 365 |
/// |
|
| 356 |
///You have to call save() to actually make a snapshot. |
|
| 366 | 357 |
Snapshot() : _graph(0) {}
|
| 367 | 358 |
///Constructor that immediately makes a snapshot |
| 368 | 359 |
|
| 369 |
///This constructor immediately makes a snapshot of the digraph. |
|
| 370 |
///\param graph The digraph we make a snapshot of. |
|
| 371 |
|
|
| 360 |
///This constructor immediately makes a snapshot of the given digraph. |
|
| 361 |
/// |
|
| 362 |
Snapshot(SmartDigraph &gr) : _graph(&gr) {
|
|
| 372 | 363 |
node_num=_graph->nodes.size(); |
| 373 | 364 |
arc_num=_graph->arcs.size(); |
| 374 | 365 |
} |
| 375 | 366 |
|
| 376 | 367 |
///Make a snapshot. |
| 377 | 368 |
|
| 378 |
///Make a snapshot of the digraph. |
|
| 379 |
/// |
|
| 380 |
///This function |
|
| 369 |
///This function makes a snapshot of the given digraph. |
|
| 370 |
///It can be called more than once. In case of a repeated |
|
| 381 | 371 |
///call, the previous snapshot gets lost. |
| 382 |
///\param graph The digraph we make the snapshot of. |
|
| 383 |
void save(SmartDigraph &graph) |
|
| 384 |
{
|
|
| 385 |
_graph=&graph; |
|
| 372 |
void save(SmartDigraph &gr) {
|
|
| 373 |
_graph=&gr; |
|
| 386 | 374 |
node_num=_graph->nodes.size(); |
| 387 | 375 |
arc_num=_graph->arcs.size(); |
| 388 | 376 |
} |
| 389 | 377 |
|
| 390 | 378 |
///Undo the changes until a snapshot. |
| 391 | 379 |
|
| 392 |
///Undo the changes until a snapshot created by save(). |
|
| 393 |
/// |
|
| 394 |
///\note After you restored a state, you cannot restore |
|
| 395 |
///a later state, in other word you cannot add again the arcs deleted |
|
| 396 |
/// |
|
| 380 |
///This function undos the changes until the last snapshot |
|
| 381 |
///created by save() or Snapshot(SmartDigraph&). |
|
| 397 | 382 |
void restore() |
| 398 | 383 |
{
|
| 399 | 384 |
_graph->restoreSnapshot(*this); |
| 400 | 385 |
} |
| 401 | 386 |
}; |
| 402 | 387 |
}; |
| 403 | 388 |
|
| 404 | 389 |
|
| 405 | 390 |
class SmartGraphBase {
|
| 406 | 391 |
|
| 407 | 392 |
protected: |
| 408 | 393 |
|
| 409 | 394 |
struct NodeT {
|
| 410 | 395 |
int first_out; |
| 411 | 396 |
}; |
| 412 | 397 |
|
| 413 | 398 |
struct ArcT {
|
| 414 | 399 |
int target; |
| 415 | 400 |
int next_out; |
| 416 | 401 |
}; |
| 417 | 402 |
|
| 418 | 403 |
std::vector<NodeT> nodes; |
| 419 | 404 |
std::vector<ArcT> arcs; |
| 420 | 405 |
|
| 421 | 406 |
int first_free_arc; |
| 422 | 407 |
|
| 423 | 408 |
public: |
| 424 | 409 |
|
| 425 |
typedef SmartGraphBase |
|
| 410 |
typedef SmartGraphBase Graph; |
|
| 426 | 411 |
|
| 427 | 412 |
class Node; |
| 428 | 413 |
class Arc; |
| 429 | 414 |
class Edge; |
| 430 | 415 |
|
| 431 | 416 |
class Node {
|
| 432 | 417 |
friend class SmartGraphBase; |
| 433 | 418 |
protected: |
| 434 | 419 |
|
| 435 | 420 |
int _id; |
| 436 | 421 |
explicit Node(int id) { _id = id;}
|
| 437 | 422 |
|
| 438 | 423 |
public: |
| 439 | 424 |
Node() {}
|
| 440 | 425 |
Node (Invalid) { _id = -1; }
|
| 441 | 426 |
bool operator==(const Node& node) const {return _id == node._id;}
|
| 442 | 427 |
bool operator!=(const Node& node) const {return _id != node._id;}
|
| 443 | 428 |
bool operator<(const Node& node) const {return _id < node._id;}
|
| 444 | 429 |
}; |
| 445 | 430 |
|
| 446 | 431 |
class Edge {
|
| 447 | 432 |
friend class SmartGraphBase; |
| 448 | 433 |
protected: |
| 449 | 434 |
|
| 450 | 435 |
int _id; |
| 451 | 436 |
explicit Edge(int id) { _id = id;}
|
| 452 | 437 |
|
| 453 | 438 |
public: |
| 454 | 439 |
Edge() {}
|
| 455 | 440 |
Edge (Invalid) { _id = -1; }
|
| 456 | 441 |
bool operator==(const Edge& arc) const {return _id == arc._id;}
|
| 457 | 442 |
bool operator!=(const Edge& arc) const {return _id != arc._id;}
|
| 458 | 443 |
bool operator<(const Edge& arc) const {return _id < arc._id;}
|
| 459 | 444 |
}; |
| 460 | 445 |
|
| 461 | 446 |
class Arc {
|
| 462 | 447 |
friend class SmartGraphBase; |
| 463 | 448 |
protected: |
| 464 | 449 |
|
| 465 | 450 |
int _id; |
| 466 | 451 |
explicit Arc(int id) { _id = id;}
|
| 467 | 452 |
|
| 468 | 453 |
public: |
| 469 | 454 |
operator Edge() const {
|
| 470 | 455 |
return _id != -1 ? edgeFromId(_id / 2) : INVALID; |
| 471 | 456 |
} |
| 472 | 457 |
|
| 473 | 458 |
Arc() {}
|
| 474 | 459 |
Arc (Invalid) { _id = -1; }
|
| 475 | 460 |
bool operator==(const Arc& arc) const {return _id == arc._id;}
|
| 476 | 461 |
bool operator!=(const Arc& arc) const {return _id != arc._id;}
|
| 477 | 462 |
bool operator<(const Arc& arc) const {return _id < arc._id;}
|
| 478 | 463 |
}; |
| 479 | 464 |
|
| 480 | 465 |
|
| 481 | 466 |
|
| 482 | 467 |
SmartGraphBase() |
| 483 | 468 |
: nodes(), arcs() {}
|
| 484 | 469 |
|
| 485 | 470 |
typedef True NodeNumTag; |
| 486 | 471 |
typedef True EdgeNumTag; |
| 487 | 472 |
typedef True ArcNumTag; |
| 488 | 473 |
|
| 489 | 474 |
int nodeNum() const { return nodes.size(); }
|
| 490 | 475 |
int edgeNum() const { return arcs.size() / 2; }
|
| 491 | 476 |
int arcNum() const { return arcs.size(); }
|
| 492 | 477 |
|
| 493 | 478 |
int maxNodeId() const { return nodes.size()-1; }
|
| 494 | 479 |
int maxEdgeId() const { return arcs.size() / 2 - 1; }
|
| 495 | 480 |
int maxArcId() const { return arcs.size()-1; }
|
| 496 | 481 |
|
| 497 | 482 |
Node source(Arc e) const { return Node(arcs[e._id ^ 1].target); }
|
| 498 | 483 |
Node target(Arc e) const { return Node(arcs[e._id].target); }
|
| 499 | 484 |
|
| 500 | 485 |
Node u(Edge e) const { return Node(arcs[2 * e._id].target); }
|
| 501 | 486 |
Node v(Edge e) const { return Node(arcs[2 * e._id + 1].target); }
|
| 502 | 487 |
|
| 503 | 488 |
static bool direction(Arc e) {
|
| 504 | 489 |
return (e._id & 1) == 1; |
| 505 | 490 |
} |
| 506 | 491 |
|
| 507 | 492 |
static Arc direct(Edge e, bool d) {
|
| 508 | 493 |
return Arc(e._id * 2 + (d ? 1 : 0)); |
| 509 | 494 |
} |
| 510 | 495 |
|
| 511 | 496 |
void first(Node& node) const {
|
| 512 | 497 |
node._id = nodes.size() - 1; |
| 513 | 498 |
} |
| 514 | 499 |
|
| 515 |
void next(Node& node) |
|
| 500 |
static void next(Node& node) {
|
|
| 516 | 501 |
--node._id; |
| 517 | 502 |
} |
| 518 | 503 |
|
| 519 | 504 |
void first(Arc& arc) const {
|
| 520 | 505 |
arc._id = arcs.size() - 1; |
| 521 | 506 |
} |
| 522 | 507 |
|
| 523 |
void next(Arc& arc) |
|
| 508 |
static void next(Arc& arc) {
|
|
| 524 | 509 |
--arc._id; |
| 525 | 510 |
} |
| 526 | 511 |
|
| 527 | 512 |
void first(Edge& arc) const {
|
| 528 | 513 |
arc._id = arcs.size() / 2 - 1; |
| 529 | 514 |
} |
| 530 | 515 |
|
| 531 |
void next(Edge& arc) |
|
| 516 |
static void next(Edge& arc) {
|
|
| 532 | 517 |
--arc._id; |
| 533 | 518 |
} |
| 534 | 519 |
|
| 535 | 520 |
void firstOut(Arc &arc, const Node& v) const {
|
| 536 | 521 |
arc._id = nodes[v._id].first_out; |
| 537 | 522 |
} |
| 538 | 523 |
void nextOut(Arc &arc) const {
|
| 539 | 524 |
arc._id = arcs[arc._id].next_out; |
| 540 | 525 |
} |
| 541 | 526 |
|
| 542 | 527 |
void firstIn(Arc &arc, const Node& v) const {
|
| 543 | 528 |
arc._id = ((nodes[v._id].first_out) ^ 1); |
| 544 | 529 |
if (arc._id == -2) arc._id = -1; |
| 545 | 530 |
} |
| 546 | 531 |
void nextIn(Arc &arc) const {
|
| 547 | 532 |
arc._id = ((arcs[arc._id ^ 1].next_out) ^ 1); |
| 548 | 533 |
if (arc._id == -2) arc._id = -1; |
| 549 | 534 |
} |
| 550 | 535 |
|
| 551 | 536 |
void firstInc(Edge &arc, bool& d, const Node& v) const {
|
| 552 | 537 |
int de = nodes[v._id].first_out; |
| 553 | 538 |
if (de != -1) {
|
| 554 | 539 |
arc._id = de / 2; |
| 555 | 540 |
d = ((de & 1) == 1); |
| 556 | 541 |
} else {
|
| 557 | 542 |
arc._id = -1; |
| 558 | 543 |
d = true; |
| 559 | 544 |
} |
| 560 | 545 |
} |
| 561 | 546 |
void nextInc(Edge &arc, bool& d) const {
|
| 562 | 547 |
int de = (arcs[(arc._id * 2) | (d ? 1 : 0)].next_out); |
| 563 | 548 |
if (de != -1) {
|
| 564 | 549 |
arc._id = de / 2; |
| 565 | 550 |
d = ((de & 1) == 1); |
| 566 | 551 |
} else {
|
| 567 | 552 |
arc._id = -1; |
| 568 | 553 |
d = true; |
| 569 | 554 |
} |
| 570 | 555 |
} |
| 571 | 556 |
|
| 572 | 557 |
static int id(Node v) { return v._id; }
|
| 573 | 558 |
static int id(Arc e) { return e._id; }
|
| 574 | 559 |
static int id(Edge e) { return e._id; }
|
| 575 | 560 |
|
| 576 | 561 |
static Node nodeFromId(int id) { return Node(id);}
|
| 577 | 562 |
static Arc arcFromId(int id) { return Arc(id);}
|
| 578 | 563 |
static Edge edgeFromId(int id) { return Edge(id);}
|
| 579 | 564 |
|
| 580 | 565 |
bool valid(Node n) const {
|
| 581 | 566 |
return n._id >= 0 && n._id < static_cast<int>(nodes.size()); |
| 582 | 567 |
} |
| 583 | 568 |
bool valid(Arc a) const {
|
| 584 | 569 |
return a._id >= 0 && a._id < static_cast<int>(arcs.size()); |
| 585 | 570 |
} |
| 586 | 571 |
bool valid(Edge e) const {
|
| 587 | 572 |
return e._id >= 0 && 2 * e._id < static_cast<int>(arcs.size()); |
| 588 | 573 |
} |
| 589 | 574 |
|
| 590 | 575 |
Node addNode() {
|
| 591 | 576 |
int n = nodes.size(); |
| 592 | 577 |
nodes.push_back(NodeT()); |
| 593 | 578 |
nodes[n].first_out = -1; |
| 594 | 579 |
|
| 595 | 580 |
return Node(n); |
| 596 | 581 |
} |
| 597 | 582 |
|
| 598 | 583 |
Edge addEdge(Node u, Node v) {
|
| 599 | 584 |
int n = arcs.size(); |
| 600 | 585 |
arcs.push_back(ArcT()); |
| 601 | 586 |
arcs.push_back(ArcT()); |
| 602 | 587 |
|
| 603 | 588 |
arcs[n].target = u._id; |
| 604 | 589 |
arcs[n | 1].target = v._id; |
| 605 | 590 |
|
| 606 | 591 |
arcs[n].next_out = nodes[v._id].first_out; |
| 607 | 592 |
nodes[v._id].first_out = n; |
| 608 | 593 |
|
| 609 | 594 |
arcs[n | 1].next_out = nodes[u._id].first_out; |
| 610 | 595 |
nodes[u._id].first_out = (n | 1); |
| 611 | 596 |
|
| 612 | 597 |
return Edge(n / 2); |
| 613 | 598 |
} |
| 614 | 599 |
|
| 615 | 600 |
void clear() {
|
| 616 | 601 |
arcs.clear(); |
| 617 | 602 |
nodes.clear(); |
| 618 | 603 |
} |
| 619 | 604 |
|
| 620 | 605 |
}; |
| 621 | 606 |
|
| 622 | 607 |
typedef GraphExtender<SmartGraphBase> ExtendedSmartGraphBase; |
| 623 | 608 |
|
| 624 | 609 |
/// \ingroup graphs |
| 625 | 610 |
/// |
| 626 | 611 |
/// \brief A smart undirected graph class. |
| 627 | 612 |
/// |
| 628 |
/// This is a simple and fast graph implementation. |
|
| 629 |
/// It is also quite memory efficient, but at the price |
|
| 630 |
/// that <b> it does support only limited (only stack-like) |
|
| 631 |
/// node and arc deletions</b>. |
|
| 632 |
/// Except from this it conforms to |
|
| 633 |
/// the \ref concepts::Graph "Graph concept". |
|
| 613 |
/// \ref SmartGraph is a simple and fast graph implementation. |
|
| 614 |
/// It is also quite memory efficient but at the price |
|
| 615 |
/// that it does not support node and edge deletion |
|
| 616 |
/// (except for the Snapshot feature). |
|
| 634 | 617 |
/// |
| 635 |
/// It also has an |
|
| 636 |
/// important extra feature that |
|
| 637 |
/// |
|
| 618 |
/// This type fully conforms to the \ref concepts::Graph "Graph concept" |
|
| 619 |
/// and it also provides some additional functionalities. |
|
| 620 |
/// Most of its member functions and nested classes are documented |
|
| 621 |
/// only in the concept class. |
|
| 638 | 622 |
/// |
| 639 |
/// \sa concepts::Graph. |
|
| 640 |
/// |
|
| 623 |
/// \sa concepts::Graph |
|
| 624 |
/// \sa SmartDigraph |
|
| 641 | 625 |
class SmartGraph : public ExtendedSmartGraphBase {
|
| 626 |
typedef ExtendedSmartGraphBase Parent; |
|
| 627 |
|
|
| 642 | 628 |
private: |
| 643 |
|
|
| 644 |
///SmartGraph is \e not copy constructible. Use GraphCopy() instead. |
|
| 645 |
|
|
| 646 |
///SmartGraph is \e not copy constructible. Use GraphCopy() instead. |
|
| 647 |
/// |
|
| 629 |
/// Graphs are \e not copy constructible. Use GraphCopy instead. |
|
| 648 | 630 |
SmartGraph(const SmartGraph &) : ExtendedSmartGraphBase() {};
|
| 649 |
|
|
| 650 |
///\brief Assignment of SmartGraph to another one is \e not allowed. |
|
| 651 |
///Use GraphCopy() instead. |
|
| 652 |
|
|
| 653 |
///Assignment of SmartGraph to another one is \e not allowed. |
|
| 654 |
///Use GraphCopy() instead. |
|
| 631 |
/// \brief Assignment of a graph to another one is \e not allowed. |
|
| 632 |
/// Use GraphCopy instead. |
|
| 655 | 633 |
void operator=(const SmartGraph &) {}
|
| 656 | 634 |
|
| 657 | 635 |
public: |
| 658 | 636 |
|
| 659 |
typedef ExtendedSmartGraphBase Parent; |
|
| 660 |
|
|
| 661 | 637 |
/// Constructor |
| 662 | 638 |
|
| 663 | 639 |
/// Constructor. |
| 664 | 640 |
/// |
| 665 | 641 |
SmartGraph() {}
|
| 666 | 642 |
|
| 667 |
///Add a new node to the graph. |
|
| 668 |
|
|
| 669 |
/// \ |
|
| 643 |
/// \brief Add a new node to the graph. |
|
| 670 | 644 |
/// |
| 645 |
/// This function adds a new node to the graph. |
|
| 646 |
/// \return The new node. |
|
| 671 | 647 |
Node addNode() { return Parent::addNode(); }
|
| 672 | 648 |
|
| 673 |
///Add a new edge to the graph. |
|
| 674 |
|
|
| 675 |
///Add a new edge to the graph with node \c s |
|
| 676 |
///and \c t. |
|
| 677 |
///\return the new edge. |
|
| 678 |
Edge addEdge(const Node& s, const Node& t) {
|
|
| 679 |
|
|
| 649 |
/// \brief Add a new edge to the graph. |
|
| 650 |
/// |
|
| 651 |
/// This function adds a new edge to the graph between nodes |
|
| 652 |
/// \c u and \c v with inherent orientation from node \c u to |
|
| 653 |
/// node \c v. |
|
| 654 |
/// \return The new edge. |
|
| 655 |
Edge addEdge(Node u, Node v) {
|
|
| 656 |
return Parent::addEdge(u, v); |
|
| 680 | 657 |
} |
| 681 | 658 |
|
| 682 | 659 |
/// \brief Node validity check |
| 683 | 660 |
/// |
| 684 |
/// This function gives back true if the given node is valid, |
|
| 685 |
/// ie. it is a real node of the graph. |
|
| 661 |
/// This function gives back \c true if the given node is valid, |
|
| 662 |
/// i.e. it is a real node of the graph. |
|
| 686 | 663 |
/// |
| 687 | 664 |
/// \warning A removed node (using Snapshot) could become valid again |
| 688 |
/// |
|
| 665 |
/// if new nodes are added to the graph. |
|
| 689 | 666 |
bool valid(Node n) const { return Parent::valid(n); }
|
| 690 | 667 |
|
| 668 |
/// \brief Edge validity check |
|
| 669 |
/// |
|
| 670 |
/// This function gives back \c true if the given edge is valid, |
|
| 671 |
/// i.e. it is a real edge of the graph. |
|
| 672 |
/// |
|
| 673 |
/// \warning A removed edge (using Snapshot) could become valid again |
|
| 674 |
/// if new edges are added to the graph. |
|
| 675 |
bool valid(Edge e) const { return Parent::valid(e); }
|
|
| 676 |
|
|
| 691 | 677 |
/// \brief Arc validity check |
| 692 | 678 |
/// |
| 693 |
/// This function gives back true if the given arc is valid, |
|
| 694 |
/// ie. it is a real arc of the graph. |
|
| 679 |
/// This function gives back \c true if the given arc is valid, |
|
| 680 |
/// i.e. it is a real arc of the graph. |
|
| 695 | 681 |
/// |
| 696 | 682 |
/// \warning A removed arc (using Snapshot) could become valid again |
| 697 |
/// |
|
| 683 |
/// if new edges are added to the graph. |
|
| 698 | 684 |
bool valid(Arc a) const { return Parent::valid(a); }
|
| 699 | 685 |
|
| 700 |
/// \brief Edge validity check |
|
| 701 |
/// |
|
| 702 |
/// This function gives back true if the given edge is valid, |
|
| 703 |
/// ie. it is a real edge of the graph. |
|
| 704 |
/// |
|
| 705 |
/// \warning A removed edge (using Snapshot) could become valid again |
|
| 706 |
/// when new edges are added to the graph. |
|
| 707 |
bool valid(Edge e) const { return Parent::valid(e); }
|
|
| 708 |
|
|
| 709 | 686 |
///Clear the graph. |
| 710 | 687 |
|
| 711 |
/// |
|
| 688 |
///This function erases all nodes and arcs from the graph. |
|
| 712 | 689 |
/// |
| 713 | 690 |
void clear() {
|
| 714 | 691 |
Parent::clear(); |
| 715 | 692 |
} |
| 716 | 693 |
|
| 694 |
/// Reserve memory for nodes. |
|
| 695 |
|
|
| 696 |
/// Using this function, it is possible to avoid superfluous memory |
|
| 697 |
/// allocation: if you know that the graph you want to build will |
|
| 698 |
/// be large (e.g. it will contain millions of nodes and/or edges), |
|
| 699 |
/// then it is worth reserving space for this amount before starting |
|
| 700 |
/// to build the graph. |
|
| 701 |
/// \sa reserveEdge() |
|
| 702 |
void reserveNode(int n) { nodes.reserve(n); };
|
|
| 703 |
|
|
| 704 |
/// Reserve memory for edges. |
|
| 705 |
|
|
| 706 |
/// Using this function, it is possible to avoid superfluous memory |
|
| 707 |
/// allocation: if you know that the graph you want to build will |
|
| 708 |
/// be large (e.g. it will contain millions of nodes and/or edges), |
|
| 709 |
/// then it is worth reserving space for this amount before starting |
|
| 710 |
/// to build the graph. |
|
| 711 |
/// \sa reserveNode() |
|
| 712 |
void reserveEdge(int m) { arcs.reserve(2 * m); };
|
|
| 713 |
|
|
| 717 | 714 |
public: |
| 718 | 715 |
|
| 719 | 716 |
class Snapshot; |
| 720 | 717 |
|
| 721 | 718 |
protected: |
| 722 | 719 |
|
| 723 | 720 |
void saveSnapshot(Snapshot &s) |
| 724 | 721 |
{
|
| 725 | 722 |
s._graph = this; |
| 726 | 723 |
s.node_num = nodes.size(); |
| 727 | 724 |
s.arc_num = arcs.size(); |
| 728 | 725 |
} |
| 729 | 726 |
|
| 730 | 727 |
void restoreSnapshot(const Snapshot &s) |
| 731 | 728 |
{
|
| 732 | 729 |
while(s.arc_num<arcs.size()) {
|
| 733 | 730 |
int n=arcs.size()-1; |
| 734 | 731 |
Edge arc=edgeFromId(n/2); |
| 735 | 732 |
Parent::notifier(Edge()).erase(arc); |
| 736 | 733 |
std::vector<Arc> dir; |
| 737 | 734 |
dir.push_back(arcFromId(n)); |
| 738 | 735 |
dir.push_back(arcFromId(n-1)); |
| 739 | 736 |
Parent::notifier(Arc()).erase(dir); |
| 740 | 737 |
nodes[arcs[n-1].target].first_out=arcs[n].next_out; |
| 741 | 738 |
nodes[arcs[n].target].first_out=arcs[n-1].next_out; |
| 742 | 739 |
arcs.pop_back(); |
| 743 | 740 |
arcs.pop_back(); |
| 744 | 741 |
} |
| 745 | 742 |
while(s.node_num<nodes.size()) {
|
| 746 | 743 |
int n=nodes.size()-1; |
| 747 | 744 |
Node node = nodeFromId(n); |
| 748 | 745 |
Parent::notifier(Node()).erase(node); |
| 749 | 746 |
nodes.pop_back(); |
| 750 | 747 |
} |
| 751 | 748 |
} |
| 752 | 749 |
|
| 753 | 750 |
public: |
| 754 | 751 |
|
| 755 |
///Class to make a snapshot of the |
|
| 752 |
///Class to make a snapshot of the graph and to restore it later. |
|
| 756 | 753 |
|
| 757 |
///Class to make a snapshot of the |
|
| 754 |
///Class to make a snapshot of the graph and to restore it later. |
|
| 758 | 755 |
/// |
| 759 |
///The newly added nodes and arcs can be removed using the |
|
| 760 |
///restore() function. |
|
| 756 |
///The newly added nodes and edges can be removed using the |
|
| 757 |
///restore() function. This is the only way for deleting nodes and/or |
|
| 758 |
///edges from a SmartGraph structure. |
|
| 761 | 759 |
/// |
| 762 |
///\note After you restore a state, you cannot restore |
|
| 763 |
///a later state, in other word you cannot add again the arcs deleted |
|
| 764 |
/// |
|
| 760 |
///\note After a state is restored, you cannot restore a later state, |
|
| 761 |
///i.e. you cannot add the removed nodes and edges again using |
|
| 762 |
///another Snapshot instance. |
|
| 765 | 763 |
/// |
| 766 |
///\warning If you do not use correctly the snapshot that can cause |
|
| 767 |
///either broken program, invalid state of the digraph, valid but |
|
| 768 |
///not the restored digraph or no change. Because the runtime performance |
|
| 769 |
///the validity of the snapshot is not stored. |
|
| 764 |
///\warning The validity of the snapshot is not stored due to |
|
| 765 |
///performance reasons. If you do not use the snapshot correctly, |
|
| 766 |
///it can cause broken program, invalid or not restored state of |
|
| 767 |
///the graph or no change. |
|
| 770 | 768 |
class Snapshot |
| 771 | 769 |
{
|
| 772 | 770 |
SmartGraph *_graph; |
| 773 | 771 |
protected: |
| 774 | 772 |
friend class SmartGraph; |
| 775 | 773 |
unsigned int node_num; |
| 776 | 774 |
unsigned int arc_num; |
| 777 | 775 |
public: |
| 778 | 776 |
///Default constructor. |
| 779 | 777 |
|
| 780 | 778 |
///Default constructor. |
| 781 |
///To actually make a snapshot you must call save(). |
|
| 782 |
/// |
|
| 779 |
///You have to call save() to actually make a snapshot. |
|
| 783 | 780 |
Snapshot() : _graph(0) {}
|
| 784 | 781 |
///Constructor that immediately makes a snapshot |
| 785 | 782 |
|
| 786 |
///This constructor immediately makes a snapshot of the digraph. |
|
| 787 |
///\param graph The digraph we make a snapshot of. |
|
| 788 |
Snapshot(SmartGraph &graph) {
|
|
| 789 |
graph.saveSnapshot(*this); |
|
| 783 |
/// This constructor immediately makes a snapshot of the given graph. |
|
| 784 |
/// |
|
| 785 |
Snapshot(SmartGraph &gr) {
|
|
| 786 |
gr.saveSnapshot(*this); |
|
| 790 | 787 |
} |
| 791 | 788 |
|
| 792 | 789 |
///Make a snapshot. |
| 793 | 790 |
|
| 794 |
///Make a snapshot of the graph. |
|
| 795 |
/// |
|
| 796 |
///This function |
|
| 791 |
///This function makes a snapshot of the given graph. |
|
| 792 |
///It can be called more than once. In case of a repeated |
|
| 797 | 793 |
///call, the previous snapshot gets lost. |
| 798 |
///\param graph The digraph we make the snapshot of. |
|
| 799 |
void save(SmartGraph &graph) |
|
| 794 |
void save(SmartGraph &gr) |
|
| 800 | 795 |
{
|
| 801 |
|
|
| 796 |
gr.saveSnapshot(*this); |
|
| 802 | 797 |
} |
| 803 | 798 |
|
| 804 |
///Undo the changes until |
|
| 799 |
///Undo the changes until the last snapshot. |
|
| 805 | 800 |
|
| 806 |
///Undo the changes until a snapshot created by save(). |
|
| 807 |
/// |
|
| 808 |
///\note After you restored a state, you cannot restore |
|
| 809 |
///a later state, in other word you cannot add again the arcs deleted |
|
| 810 |
/// |
|
| 801 |
///This function undos the changes until the last snapshot |
|
| 802 |
///created by save() or Snapshot(SmartGraph&). |
|
| 811 | 803 |
void restore() |
| 812 | 804 |
{
|
| 813 | 805 |
_graph->restoreSnapshot(*this); |
| 814 | 806 |
} |
| 815 | 807 |
}; |
| 816 | 808 |
}; |
| 817 | 809 |
|
| 818 | 810 |
} //namespace lemon |
| 819 | 811 |
|
| 820 | 812 |
|
| 821 | 813 |
#endif //LEMON_SMART_GRAPH_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2008 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <iostream> |
| 20 | 20 |
#include <lemon/soplex.h> |
| 21 | 21 |
|
| 22 |
#include <soplex |
|
| 22 |
#include <soplex.h> |
|
| 23 |
#include <spxout.h> |
|
| 23 | 24 |
|
| 24 | 25 |
|
| 25 | 26 |
///\file |
| 26 | 27 |
///\brief Implementation of the LEMON-SOPLEX lp solver interface. |
| 27 | 28 |
namespace lemon {
|
| 28 | 29 |
|
| 29 | 30 |
SoplexLp::SoplexLp() {
|
| 30 | 31 |
soplex = new soplex::SoPlex; |
| 32 |
messageLevel(MESSAGE_NOTHING); |
|
| 31 | 33 |
} |
| 32 | 34 |
|
| 33 | 35 |
SoplexLp::~SoplexLp() {
|
| 34 | 36 |
delete soplex; |
| 35 | 37 |
} |
| 36 | 38 |
|
| 37 | 39 |
SoplexLp::SoplexLp(const SoplexLp& lp) {
|
| 38 | 40 |
rows = lp.rows; |
| 39 | 41 |
cols = lp.cols; |
| 40 | 42 |
|
| 41 | 43 |
soplex = new soplex::SoPlex; |
| 42 | 44 |
(*static_cast<soplex::SPxLP*>(soplex)) = *(lp.soplex); |
| 43 | 45 |
|
| 44 | 46 |
_col_names = lp._col_names; |
| 45 | 47 |
_col_names_ref = lp._col_names_ref; |
| 46 | 48 |
|
| 47 | 49 |
_row_names = lp._row_names; |
| 48 | 50 |
_row_names_ref = lp._row_names_ref; |
| 49 | 51 |
|
| 52 |
messageLevel(MESSAGE_NOTHING); |
|
| 50 | 53 |
} |
| 51 | 54 |
|
| 52 | 55 |
void SoplexLp::_clear_temporals() {
|
| 53 | 56 |
_primal_values.clear(); |
| 54 | 57 |
_dual_values.clear(); |
| 55 | 58 |
} |
| 56 | 59 |
|
| 57 |
SoplexLp* SoplexLp:: |
|
| 60 |
SoplexLp* SoplexLp::newSolver() const {
|
|
| 58 | 61 |
SoplexLp* newlp = new SoplexLp(); |
| 59 | 62 |
return newlp; |
| 60 | 63 |
} |
| 61 | 64 |
|
| 62 |
SoplexLp* SoplexLp:: |
|
| 65 |
SoplexLp* SoplexLp::cloneSolver() const {
|
|
| 63 | 66 |
SoplexLp* newlp = new SoplexLp(*this); |
| 64 | 67 |
return newlp; |
| 65 | 68 |
} |
| 66 | 69 |
|
| 67 | 70 |
const char* SoplexLp::_solverName() const { return "SoplexLp"; }
|
| 68 | 71 |
|
| 69 | 72 |
int SoplexLp::_addCol() {
|
| 70 | 73 |
soplex::LPCol c; |
| 71 | 74 |
c.setLower(-soplex::infinity); |
| 72 | 75 |
c.setUpper(soplex::infinity); |
| 73 | 76 |
soplex->addCol(c); |
| 74 | 77 |
|
| 75 | 78 |
_col_names.push_back(std::string()); |
| 76 | 79 |
|
| 77 | 80 |
return soplex->nCols() - 1; |
| 78 | 81 |
} |
| 79 | 82 |
|
| 80 | 83 |
int SoplexLp::_addRow() {
|
| 81 | 84 |
soplex::LPRow r; |
| 82 | 85 |
r.setLhs(-soplex::infinity); |
| 83 | 86 |
r.setRhs(soplex::infinity); |
| 84 | 87 |
soplex->addRow(r); |
| 85 | 88 |
|
| 86 | 89 |
_row_names.push_back(std::string()); |
| 87 | 90 |
|
| 88 | 91 |
return soplex->nRows() - 1; |
| 89 | 92 |
} |
| 90 | 93 |
|
| 94 |
int SoplexLp::_addRow(Value l, ExprIterator b, ExprIterator e, Value u) {
|
|
| 95 |
soplex::DSVector v; |
|
| 96 |
for (ExprIterator it = b; it != e; ++it) {
|
|
| 97 |
v.add(it->first, it->second); |
|
| 98 |
} |
|
| 99 |
soplex::LPRow r(l, v, u); |
|
| 100 |
soplex->addRow(r); |
|
| 101 |
|
|
| 102 |
_row_names.push_back(std::string()); |
|
| 103 |
|
|
| 104 |
return soplex->nRows() - 1; |
|
| 105 |
} |
|
| 106 |
|
|
| 91 | 107 |
|
| 92 | 108 |
void SoplexLp::_eraseCol(int i) {
|
| 93 | 109 |
soplex->removeCol(i); |
| 94 | 110 |
_col_names_ref.erase(_col_names[i]); |
| 95 | 111 |
_col_names[i] = _col_names.back(); |
| 96 | 112 |
_col_names_ref[_col_names.back()] = i; |
| 97 | 113 |
_col_names.pop_back(); |
| 98 | 114 |
} |
| 99 | 115 |
|
| 100 | 116 |
void SoplexLp::_eraseRow(int i) {
|
| 101 | 117 |
soplex->removeRow(i); |
| 102 | 118 |
_row_names_ref.erase(_row_names[i]); |
| 103 | 119 |
_row_names[i] = _row_names.back(); |
| 104 | 120 |
_row_names_ref[_row_names.back()] = i; |
| 105 | 121 |
_row_names.pop_back(); |
| 106 | 122 |
} |
| 107 | 123 |
|
| 108 | 124 |
void SoplexLp::_eraseColId(int i) {
|
| 109 | 125 |
cols.eraseIndex(i); |
| 110 | 126 |
cols.relocateIndex(i, cols.maxIndex()); |
| 111 | 127 |
} |
| 112 | 128 |
void SoplexLp::_eraseRowId(int i) {
|
| 113 | 129 |
rows.eraseIndex(i); |
| 114 | 130 |
rows.relocateIndex(i, rows.maxIndex()); |
| 115 | 131 |
} |
| 116 | 132 |
|
| 117 | 133 |
void SoplexLp::_getColName(int c, std::string &name) const {
|
| 118 | 134 |
name = _col_names[c]; |
| 119 | 135 |
} |
| 120 | 136 |
|
| 121 | 137 |
void SoplexLp::_setColName(int c, const std::string &name) {
|
| 122 | 138 |
_col_names_ref.erase(_col_names[c]); |
| 123 | 139 |
_col_names[c] = name; |
| 124 | 140 |
if (!name.empty()) {
|
| 125 | 141 |
_col_names_ref.insert(std::make_pair(name, c)); |
| 126 | 142 |
} |
| 127 | 143 |
} |
| 128 | 144 |
|
| 129 | 145 |
int SoplexLp::_colByName(const std::string& name) const {
|
| 130 | 146 |
std::map<std::string, int>::const_iterator it = |
| 131 | 147 |
_col_names_ref.find(name); |
| 132 | 148 |
if (it != _col_names_ref.end()) {
|
| 133 | 149 |
return it->second; |
| 134 | 150 |
} else {
|
| 135 | 151 |
return -1; |
| 136 | 152 |
} |
| 137 | 153 |
} |
| 138 | 154 |
|
| 139 | 155 |
void SoplexLp::_getRowName(int r, std::string &name) const {
|
| 140 | 156 |
name = _row_names[r]; |
| 141 | 157 |
} |
| 142 | 158 |
|
| 143 | 159 |
void SoplexLp::_setRowName(int r, const std::string &name) {
|
| 144 | 160 |
_row_names_ref.erase(_row_names[r]); |
| 145 | 161 |
_row_names[r] = name; |
| 146 | 162 |
if (!name.empty()) {
|
| 147 | 163 |
_row_names_ref.insert(std::make_pair(name, r)); |
| 148 | 164 |
} |
| 149 | 165 |
} |
| 150 | 166 |
|
| 151 | 167 |
int SoplexLp::_rowByName(const std::string& name) const {
|
| 152 | 168 |
std::map<std::string, int>::const_iterator it = |
| 153 | 169 |
_row_names_ref.find(name); |
| 154 | 170 |
if (it != _row_names_ref.end()) {
|
| 155 | 171 |
return it->second; |
| 156 | 172 |
} else {
|
| 157 | 173 |
return -1; |
| 158 | 174 |
} |
| 159 | 175 |
} |
| 160 | 176 |
|
| 161 | 177 |
|
| 162 | 178 |
void SoplexLp::_setRowCoeffs(int i, ExprIterator b, ExprIterator e) {
|
| 163 | 179 |
for (int j = 0; j < soplex->nCols(); ++j) {
|
| 164 | 180 |
soplex->changeElement(i, j, 0.0); |
| 165 | 181 |
} |
| 166 | 182 |
for(ExprIterator it = b; it != e; ++it) {
|
| 167 | 183 |
soplex->changeElement(i, it->first, it->second); |
| 168 | 184 |
} |
| 169 | 185 |
} |
| 170 | 186 |
|
| 171 | 187 |
void SoplexLp::_getRowCoeffs(int i, InsertIterator b) const {
|
| 172 | 188 |
const soplex::SVector& vec = soplex->rowVector(i); |
| 173 | 189 |
for (int k = 0; k < vec.size(); ++k) {
|
| 174 | 190 |
*b = std::make_pair(vec.index(k), vec.value(k)); |
| 175 | 191 |
++b; |
| 176 | 192 |
} |
| 177 | 193 |
} |
| 178 | 194 |
|
| 179 | 195 |
void SoplexLp::_setColCoeffs(int j, ExprIterator b, ExprIterator e) {
|
| 180 | 196 |
for (int i = 0; i < soplex->nRows(); ++i) {
|
| 181 | 197 |
soplex->changeElement(i, j, 0.0); |
| 182 | 198 |
} |
| 183 | 199 |
for(ExprIterator it = b; it != e; ++it) {
|
| 184 | 200 |
soplex->changeElement(it->first, j, it->second); |
| 185 | 201 |
} |
| 186 | 202 |
} |
| 187 | 203 |
|
| 188 | 204 |
void SoplexLp::_getColCoeffs(int i, InsertIterator b) const {
|
| 189 | 205 |
const soplex::SVector& vec = soplex->colVector(i); |
| 190 | 206 |
for (int k = 0; k < vec.size(); ++k) {
|
| 191 | 207 |
*b = std::make_pair(vec.index(k), vec.value(k)); |
| 192 | 208 |
++b; |
| 193 | 209 |
} |
| 194 | 210 |
} |
| 195 | 211 |
|
| 196 | 212 |
void SoplexLp::_setCoeff(int i, int j, Value value) {
|
| 197 | 213 |
soplex->changeElement(i, j, value); |
| 198 | 214 |
} |
| 199 | 215 |
|
| 200 | 216 |
SoplexLp::Value SoplexLp::_getCoeff(int i, int j) const {
|
| 201 | 217 |
return soplex->rowVector(i)[j]; |
| 202 | 218 |
} |
| 203 | 219 |
|
| 204 | 220 |
void SoplexLp::_setColLowerBound(int i, Value value) {
|
| 205 | 221 |
LEMON_ASSERT(value != INF, "Invalid bound"); |
| 206 | 222 |
soplex->changeLower(i, value != -INF ? value : -soplex::infinity); |
| 207 | 223 |
} |
| 208 | 224 |
|
| 209 | 225 |
SoplexLp::Value SoplexLp::_getColLowerBound(int i) const {
|
| 210 | 226 |
double value = soplex->lower(i); |
| 211 | 227 |
return value != -soplex::infinity ? value : -INF; |
| 212 | 228 |
} |
| 213 | 229 |
|
| 214 | 230 |
void SoplexLp::_setColUpperBound(int i, Value value) {
|
| 215 | 231 |
LEMON_ASSERT(value != -INF, "Invalid bound"); |
| 216 | 232 |
soplex->changeUpper(i, value != INF ? value : soplex::infinity); |
| 217 | 233 |
} |
| 218 | 234 |
|
| 219 | 235 |
SoplexLp::Value SoplexLp::_getColUpperBound(int i) const {
|
| 220 | 236 |
double value = soplex->upper(i); |
| 221 | 237 |
return value != soplex::infinity ? value : INF; |
| 222 | 238 |
} |
| 223 | 239 |
|
| 224 | 240 |
void SoplexLp::_setRowLowerBound(int i, Value lb) {
|
| 225 | 241 |
LEMON_ASSERT(lb != INF, "Invalid bound"); |
| 226 | 242 |
soplex->changeRange(i, lb != -INF ? lb : -soplex::infinity, soplex->rhs(i)); |
| 227 | 243 |
} |
| 228 | 244 |
|
| 229 | 245 |
SoplexLp::Value SoplexLp::_getRowLowerBound(int i) const {
|
| 230 | 246 |
double res = soplex->lhs(i); |
| 231 | 247 |
return res == -soplex::infinity ? -INF : res; |
| 232 | 248 |
} |
| 233 | 249 |
|
| 234 | 250 |
void SoplexLp::_setRowUpperBound(int i, Value ub) {
|
| 235 | 251 |
LEMON_ASSERT(ub != -INF, "Invalid bound"); |
| 236 | 252 |
soplex->changeRange(i, soplex->lhs(i), ub != INF ? ub : soplex::infinity); |
| 237 | 253 |
} |
| 238 | 254 |
|
| 239 | 255 |
SoplexLp::Value SoplexLp::_getRowUpperBound(int i) const {
|
| 240 | 256 |
double res = soplex->rhs(i); |
| 241 | 257 |
return res == soplex::infinity ? INF : res; |
| 242 | 258 |
} |
| 243 | 259 |
|
| 244 | 260 |
void SoplexLp::_setObjCoeffs(ExprIterator b, ExprIterator e) {
|
| 245 | 261 |
for (int j = 0; j < soplex->nCols(); ++j) {
|
| 246 | 262 |
soplex->changeObj(j, 0.0); |
| 247 | 263 |
} |
| 248 | 264 |
for (ExprIterator it = b; it != e; ++it) {
|
| 249 | 265 |
soplex->changeObj(it->first, it->second); |
| 250 | 266 |
} |
| 251 | 267 |
} |
| 252 | 268 |
|
| 253 | 269 |
void SoplexLp::_getObjCoeffs(InsertIterator b) const {
|
| 254 | 270 |
for (int j = 0; j < soplex->nCols(); ++j) {
|
| 255 | 271 |
Value coef = soplex->obj(j); |
| 256 | 272 |
if (coef != 0.0) {
|
| 257 | 273 |
*b = std::make_pair(j, coef); |
| 258 | 274 |
++b; |
| 259 | 275 |
} |
| 260 | 276 |
} |
| 261 | 277 |
} |
| 262 | 278 |
|
| 263 | 279 |
void SoplexLp::_setObjCoeff(int i, Value obj_coef) {
|
| 264 | 280 |
soplex->changeObj(i, obj_coef); |
| 265 | 281 |
} |
| 266 | 282 |
|
| 267 | 283 |
SoplexLp::Value SoplexLp::_getObjCoeff(int i) const {
|
| 268 | 284 |
return soplex->obj(i); |
| 269 | 285 |
} |
| 270 | 286 |
|
| 271 | 287 |
SoplexLp::SolveExitStatus SoplexLp::_solve() {
|
| 272 | 288 |
|
| 273 | 289 |
_clear_temporals(); |
| 290 |
|
|
| 291 |
_applyMessageLevel(); |
|
| 274 | 292 |
|
| 275 | 293 |
soplex::SPxSolver::Status status = soplex->solve(); |
| 276 | 294 |
|
| 277 | 295 |
switch (status) {
|
| 278 | 296 |
case soplex::SPxSolver::OPTIMAL: |
| 279 | 297 |
case soplex::SPxSolver::INFEASIBLE: |
| 280 | 298 |
case soplex::SPxSolver::UNBOUNDED: |
| 281 | 299 |
return SOLVED; |
| 282 | 300 |
default: |
| 283 | 301 |
return UNSOLVED; |
| 284 | 302 |
} |
| 285 | 303 |
} |
| 286 | 304 |
|
| 287 | 305 |
SoplexLp::Value SoplexLp::_getPrimal(int i) const {
|
| 288 | 306 |
if (_primal_values.empty()) {
|
| 289 | 307 |
_primal_values.resize(soplex->nCols()); |
| 290 | 308 |
soplex::Vector pv(_primal_values.size(), &_primal_values.front()); |
| 291 | 309 |
soplex->getPrimal(pv); |
| 292 | 310 |
} |
| 293 | 311 |
return _primal_values[i]; |
| 294 | 312 |
} |
| 295 | 313 |
|
| 296 | 314 |
SoplexLp::Value SoplexLp::_getDual(int i) const {
|
| 297 | 315 |
if (_dual_values.empty()) {
|
| 298 | 316 |
_dual_values.resize(soplex->nRows()); |
| 299 | 317 |
soplex::Vector dv(_dual_values.size(), &_dual_values.front()); |
| 300 | 318 |
soplex->getDual(dv); |
| 301 | 319 |
} |
| 302 | 320 |
return _dual_values[i]; |
| 303 | 321 |
} |
| 304 | 322 |
|
| 305 | 323 |
SoplexLp::Value SoplexLp::_getPrimalValue() const {
|
| 306 | 324 |
return soplex->objValue(); |
| 307 | 325 |
} |
| 308 | 326 |
|
| 309 | 327 |
SoplexLp::VarStatus SoplexLp::_getColStatus(int i) const {
|
| 310 | 328 |
switch (soplex->getBasisColStatus(i)) {
|
| 311 | 329 |
case soplex::SPxSolver::BASIC: |
| 312 | 330 |
return BASIC; |
| 313 | 331 |
case soplex::SPxSolver::ON_UPPER: |
| 314 | 332 |
return UPPER; |
| 315 | 333 |
case soplex::SPxSolver::ON_LOWER: |
| 316 | 334 |
return LOWER; |
| 317 | 335 |
case soplex::SPxSolver::FIXED: |
| 318 | 336 |
return FIXED; |
| 319 | 337 |
case soplex::SPxSolver::ZERO: |
| 320 | 338 |
return FREE; |
| 321 | 339 |
default: |
| 322 | 340 |
LEMON_ASSERT(false, "Wrong column status"); |
| 323 | 341 |
return VarStatus(); |
| 324 | 342 |
} |
| 325 | 343 |
} |
| 326 | 344 |
|
| 327 | 345 |
SoplexLp::VarStatus SoplexLp::_getRowStatus(int i) const {
|
| 328 | 346 |
switch (soplex->getBasisRowStatus(i)) {
|
| 329 | 347 |
case soplex::SPxSolver::BASIC: |
| 330 | 348 |
return BASIC; |
| 331 | 349 |
case soplex::SPxSolver::ON_UPPER: |
| 332 | 350 |
return UPPER; |
| 333 | 351 |
case soplex::SPxSolver::ON_LOWER: |
| 334 | 352 |
return LOWER; |
| 335 | 353 |
case soplex::SPxSolver::FIXED: |
| 336 | 354 |
return FIXED; |
| 337 | 355 |
case soplex::SPxSolver::ZERO: |
| 338 | 356 |
return FREE; |
| 339 | 357 |
default: |
| 340 | 358 |
LEMON_ASSERT(false, "Wrong row status"); |
| 341 | 359 |
return VarStatus(); |
| 342 | 360 |
} |
| 343 | 361 |
} |
| 344 | 362 |
|
| 345 | 363 |
SoplexLp::Value SoplexLp::_getPrimalRay(int i) const {
|
| 346 | 364 |
if (_primal_ray.empty()) {
|
| 347 | 365 |
_primal_ray.resize(soplex->nCols()); |
| 348 | 366 |
soplex::Vector pv(_primal_ray.size(), &_primal_ray.front()); |
| 349 | 367 |
soplex->getDualfarkas(pv); |
| 350 | 368 |
} |
| 351 | 369 |
return _primal_ray[i]; |
| 352 | 370 |
} |
| 353 | 371 |
|
| 354 | 372 |
SoplexLp::Value SoplexLp::_getDualRay(int i) const {
|
| 355 | 373 |
if (_dual_ray.empty()) {
|
| 356 | 374 |
_dual_ray.resize(soplex->nRows()); |
| 357 | 375 |
soplex::Vector dv(_dual_ray.size(), &_dual_ray.front()); |
| 358 | 376 |
soplex->getDualfarkas(dv); |
| 359 | 377 |
} |
| 360 | 378 |
return _dual_ray[i]; |
| 361 | 379 |
} |
| 362 | 380 |
|
| 363 | 381 |
SoplexLp::ProblemType SoplexLp::_getPrimalType() const {
|
| 364 | 382 |
switch (soplex->status()) {
|
| 365 | 383 |
case soplex::SPxSolver::OPTIMAL: |
| 366 | 384 |
return OPTIMAL; |
| 367 | 385 |
case soplex::SPxSolver::UNBOUNDED: |
| 368 | 386 |
return UNBOUNDED; |
| 369 | 387 |
case soplex::SPxSolver::INFEASIBLE: |
| 370 | 388 |
return INFEASIBLE; |
| 371 | 389 |
default: |
| 372 | 390 |
return UNDEFINED; |
| 373 | 391 |
} |
| 374 | 392 |
} |
| 375 | 393 |
|
| 376 | 394 |
SoplexLp::ProblemType SoplexLp::_getDualType() const {
|
| 377 | 395 |
switch (soplex->status()) {
|
| 378 | 396 |
case soplex::SPxSolver::OPTIMAL: |
| 379 | 397 |
return OPTIMAL; |
| 380 | 398 |
case soplex::SPxSolver::UNBOUNDED: |
| 381 | 399 |
return UNBOUNDED; |
| 382 | 400 |
case soplex::SPxSolver::INFEASIBLE: |
| 383 | 401 |
return INFEASIBLE; |
| 384 | 402 |
default: |
| 385 | 403 |
return UNDEFINED; |
| 386 | 404 |
} |
| 387 | 405 |
} |
| 388 | 406 |
|
| 389 | 407 |
void SoplexLp::_setSense(Sense sense) {
|
| 390 | 408 |
switch (sense) {
|
| 391 | 409 |
case MIN: |
| 392 | 410 |
soplex->changeSense(soplex::SPxSolver::MINIMIZE); |
| 393 | 411 |
break; |
| 394 | 412 |
case MAX: |
| 395 | 413 |
soplex->changeSense(soplex::SPxSolver::MAXIMIZE); |
| 396 | 414 |
} |
| 397 | 415 |
} |
| 398 | 416 |
|
| 399 | 417 |
SoplexLp::Sense SoplexLp::_getSense() const {
|
| 400 | 418 |
switch (soplex->spxSense()) {
|
| 401 | 419 |
case soplex::SPxSolver::MAXIMIZE: |
| 402 | 420 |
return MAX; |
| 403 | 421 |
case soplex::SPxSolver::MINIMIZE: |
| 404 | 422 |
return MIN; |
| 405 | 423 |
default: |
| 406 | 424 |
LEMON_ASSERT(false, "Wrong sense."); |
| 407 | 425 |
return SoplexLp::Sense(); |
| 408 | 426 |
} |
| 409 | 427 |
} |
| 410 | 428 |
|
| 411 | 429 |
void SoplexLp::_clear() {
|
| 412 | 430 |
soplex->clear(); |
| 413 | 431 |
_col_names.clear(); |
| 414 | 432 |
_col_names_ref.clear(); |
| 415 | 433 |
_row_names.clear(); |
| 416 | 434 |
_row_names_ref.clear(); |
| 417 | 435 |
cols.clear(); |
| 418 | 436 |
rows.clear(); |
| 419 | 437 |
_clear_temporals(); |
| 420 | 438 |
} |
| 421 | 439 |
|
| 440 |
void SoplexLp::_messageLevel(MessageLevel level) {
|
|
| 441 |
switch (level) {
|
|
| 442 |
case MESSAGE_NOTHING: |
|
| 443 |
_message_level = -1; |
|
| 444 |
break; |
|
| 445 |
case MESSAGE_ERROR: |
|
| 446 |
_message_level = soplex::SPxOut::ERROR; |
|
| 447 |
break; |
|
| 448 |
case MESSAGE_WARNING: |
|
| 449 |
_message_level = soplex::SPxOut::WARNING; |
|
| 450 |
break; |
|
| 451 |
case MESSAGE_NORMAL: |
|
| 452 |
_message_level = soplex::SPxOut::INFO2; |
|
| 453 |
break; |
|
| 454 |
case MESSAGE_VERBOSE: |
|
| 455 |
_message_level = soplex::SPxOut::DEBUG; |
|
| 456 |
break; |
|
| 457 |
} |
|
| 458 |
} |
|
| 459 |
|
|
| 460 |
void SoplexLp::_applyMessageLevel() {
|
|
| 461 |
soplex::Param::setVerbose(_message_level); |
|
| 462 |
} |
|
| 463 |
|
|
| 422 | 464 |
} //namespace lemon |
| 423 | 465 |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2008 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_SOPLEX_H |
| 20 | 20 |
#define LEMON_SOPLEX_H |
| 21 | 21 |
|
| 22 | 22 |
///\file |
| 23 | 23 |
///\brief Header of the LEMON-SOPLEX lp solver interface. |
| 24 | 24 |
|
| 25 | 25 |
#include <vector> |
| 26 | 26 |
#include <string> |
| 27 | 27 |
|
| 28 | 28 |
#include <lemon/lp_base.h> |
| 29 | 29 |
|
| 30 | 30 |
// Forward declaration |
| 31 | 31 |
namespace soplex {
|
| 32 | 32 |
class SoPlex; |
| 33 | 33 |
} |
| 34 | 34 |
|
| 35 | 35 |
namespace lemon {
|
| 36 | 36 |
|
| 37 | 37 |
/// \ingroup lp_group |
| 38 | 38 |
/// |
| 39 | 39 |
/// \brief Interface for the SOPLEX solver |
| 40 | 40 |
/// |
| 41 | 41 |
/// This class implements an interface for the SoPlex LP solver. |
| 42 | 42 |
/// The SoPlex library is an object oriented lp solver library |
| 43 | 43 |
/// developed at the Konrad-Zuse-Zentrum f�r Informationstechnik |
| 44 | 44 |
/// Berlin (ZIB). You can find detailed information about it at the |
| 45 | 45 |
/// <tt>http://soplex.zib.de</tt> address. |
| 46 | 46 |
class SoplexLp : public LpSolver {
|
| 47 | 47 |
private: |
| 48 | 48 |
|
| 49 | 49 |
soplex::SoPlex* soplex; |
| 50 | 50 |
|
| 51 | 51 |
std::vector<std::string> _col_names; |
| 52 | 52 |
std::map<std::string, int> _col_names_ref; |
| 53 | 53 |
|
| 54 | 54 |
std::vector<std::string> _row_names; |
| 55 | 55 |
std::map<std::string, int> _row_names_ref; |
| 56 | 56 |
|
| 57 | 57 |
private: |
| 58 | 58 |
|
| 59 | 59 |
// these values cannot be retrieved element by element |
| 60 | 60 |
mutable std::vector<Value> _primal_values; |
| 61 | 61 |
mutable std::vector<Value> _dual_values; |
| 62 | 62 |
|
| 63 | 63 |
mutable std::vector<Value> _primal_ray; |
| 64 | 64 |
mutable std::vector<Value> _dual_ray; |
| 65 | 65 |
|
| 66 | 66 |
void _clear_temporals(); |
| 67 | 67 |
|
| 68 | 68 |
public: |
| 69 | 69 |
|
| 70 | 70 |
/// \e |
| 71 | 71 |
SoplexLp(); |
| 72 | 72 |
/// \e |
| 73 | 73 |
SoplexLp(const SoplexLp&); |
| 74 | 74 |
/// \e |
| 75 | 75 |
~SoplexLp(); |
| 76 |
/// \e |
|
| 77 |
virtual SoplexLp* newSolver() const; |
|
| 78 |
/// \e |
|
| 79 |
virtual SoplexLp* cloneSolver() const; |
|
| 76 | 80 |
|
| 77 | 81 |
protected: |
| 78 | 82 |
|
| 79 |
virtual SoplexLp* _newSolver() const; |
|
| 80 |
virtual SoplexLp* _cloneSolver() const; |
|
| 81 |
|
|
| 82 | 83 |
virtual const char* _solverName() const; |
| 83 | 84 |
|
| 84 | 85 |
virtual int _addCol(); |
| 85 | 86 |
virtual int _addRow(); |
| 87 |
virtual int _addRow(Value l, ExprIterator b, ExprIterator e, Value u); |
|
| 86 | 88 |
|
| 87 | 89 |
virtual void _eraseCol(int i); |
| 88 | 90 |
virtual void _eraseRow(int i); |
| 89 | 91 |
|
| 90 | 92 |
virtual void _eraseColId(int i); |
| 91 | 93 |
virtual void _eraseRowId(int i); |
| 92 | 94 |
|
| 93 | 95 |
virtual void _getColName(int col, std::string& name) const; |
| 94 | 96 |
virtual void _setColName(int col, const std::string& name); |
| 95 | 97 |
virtual int _colByName(const std::string& name) const; |
| 96 | 98 |
|
| 97 | 99 |
virtual void _getRowName(int row, std::string& name) const; |
| 98 | 100 |
virtual void _setRowName(int row, const std::string& name); |
| 99 | 101 |
virtual int _rowByName(const std::string& name) const; |
| 100 | 102 |
|
| 101 | 103 |
virtual void _setRowCoeffs(int i, ExprIterator b, ExprIterator e); |
| 102 | 104 |
virtual void _getRowCoeffs(int i, InsertIterator b) const; |
| 103 | 105 |
|
| 104 | 106 |
virtual void _setColCoeffs(int i, ExprIterator b, ExprIterator e); |
| 105 | 107 |
virtual void _getColCoeffs(int i, InsertIterator b) const; |
| 106 | 108 |
|
| 107 | 109 |
virtual void _setCoeff(int row, int col, Value value); |
| 108 | 110 |
virtual Value _getCoeff(int row, int col) const; |
| 109 | 111 |
|
| 110 | 112 |
virtual void _setColLowerBound(int i, Value value); |
| 111 | 113 |
virtual Value _getColLowerBound(int i) const; |
| 112 | 114 |
virtual void _setColUpperBound(int i, Value value); |
| 113 | 115 |
virtual Value _getColUpperBound(int i) const; |
| 114 | 116 |
|
| 115 | 117 |
virtual void _setRowLowerBound(int i, Value value); |
| 116 | 118 |
virtual Value _getRowLowerBound(int i) const; |
| 117 | 119 |
virtual void _setRowUpperBound(int i, Value value); |
| 118 | 120 |
virtual Value _getRowUpperBound(int i) const; |
| 119 | 121 |
|
| 120 | 122 |
virtual void _setObjCoeffs(ExprIterator b, ExprIterator e); |
| 121 | 123 |
virtual void _getObjCoeffs(InsertIterator b) const; |
| 122 | 124 |
|
| 123 | 125 |
virtual void _setObjCoeff(int i, Value obj_coef); |
| 124 | 126 |
virtual Value _getObjCoeff(int i) const; |
| 125 | 127 |
|
| 126 | 128 |
virtual void _setSense(Sense sense); |
| 127 | 129 |
virtual Sense _getSense() const; |
| 128 | 130 |
|
| 129 | 131 |
virtual SolveExitStatus _solve(); |
| 130 | 132 |
virtual Value _getPrimal(int i) const; |
| 131 | 133 |
virtual Value _getDual(int i) const; |
| 132 | 134 |
|
| 133 | 135 |
virtual Value _getPrimalValue() const; |
| 134 | 136 |
|
| 135 | 137 |
virtual Value _getPrimalRay(int i) const; |
| 136 | 138 |
virtual Value _getDualRay(int i) const; |
| 137 | 139 |
|
| 138 | 140 |
virtual VarStatus _getColStatus(int i) const; |
| 139 | 141 |
virtual VarStatus _getRowStatus(int i) const; |
| 140 | 142 |
|
| 141 | 143 |
virtual ProblemType _getPrimalType() const; |
| 142 | 144 |
virtual ProblemType _getDualType() const; |
| 143 | 145 |
|
| 144 | 146 |
virtual void _clear(); |
| 145 | 147 |
|
| 148 |
void _messageLevel(MessageLevel m); |
|
| 149 |
void _applyMessageLevel(); |
|
| 150 |
|
|
| 151 |
int _message_level; |
|
| 152 |
|
|
| 146 | 153 |
}; |
| 147 | 154 |
|
| 148 | 155 |
} //END OF NAMESPACE LEMON |
| 149 | 156 |
|
| 150 | 157 |
#endif //LEMON_SOPLEX_H |
| 151 | 158 |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_SUURBALLE_H |
| 20 | 20 |
#define LEMON_SUURBALLE_H |
| 21 | 21 |
|
| 22 | 22 |
///\ingroup shortest_path |
| 23 | 23 |
///\file |
| 24 | 24 |
///\brief An algorithm for finding arc-disjoint paths between two |
| 25 | 25 |
/// nodes having minimum total length. |
| 26 | 26 |
|
| 27 | 27 |
#include <vector> |
| 28 |
#include <limits> |
|
| 28 | 29 |
#include <lemon/bin_heap.h> |
| 29 | 30 |
#include <lemon/path.h> |
| 31 |
#include <lemon/list_graph.h> |
|
| 32 |
#include <lemon/maps.h> |
|
| 30 | 33 |
|
| 31 | 34 |
namespace lemon {
|
| 32 | 35 |
|
| 33 | 36 |
/// \addtogroup shortest_path |
| 34 | 37 |
/// @{
|
| 35 | 38 |
|
| 36 | 39 |
/// \brief Algorithm for finding arc-disjoint paths between two nodes |
| 37 | 40 |
/// having minimum total length. |
| 38 | 41 |
/// |
| 39 | 42 |
/// \ref lemon::Suurballe "Suurballe" implements an algorithm for |
| 40 | 43 |
/// finding arc-disjoint paths having minimum total length (cost) |
| 41 | 44 |
/// from a given source node to a given target node in a digraph. |
| 42 | 45 |
/// |
| 43 |
/// In fact, this implementation is the specialization of the |
|
| 44 |
/// \ref CapacityScaling "successive shortest path" algorithm. |
|
| 46 |
/// Note that this problem is a special case of the \ref min_cost_flow |
|
| 47 |
/// "minimum cost flow problem". This implementation is actually an |
|
| 48 |
/// efficient specialized version of the \ref CapacityScaling |
|
| 49 |
/// "Successive Shortest Path" algorithm directly for this problem. |
|
| 50 |
/// Therefore this class provides query functions for flow values and |
|
| 51 |
/// node potentials (the dual solution) just like the minimum cost flow |
|
| 52 |
/// algorithms. |
|
| 45 | 53 |
/// |
| 46 |
/// \tparam Digraph The digraph type the algorithm runs on. |
|
| 47 |
/// The default value is \c ListDigraph. |
|
| 48 |
/// \tparam LengthMap The type of the length (cost) map. |
|
| 49 |
/// The default value is <tt>Digraph::ArcMap<int></tt>. |
|
| 54 |
/// \tparam GR The digraph type the algorithm runs on. |
|
| 55 |
/// \tparam LEN The type of the length map. |
|
| 56 |
/// The default value is <tt>GR::ArcMap<int></tt>. |
|
| 50 | 57 |
/// |
| 51 | 58 |
/// \warning Length values should be \e non-negative \e integers. |
| 52 | 59 |
/// |
| 53 | 60 |
/// \note For finding node-disjoint paths this algorithm can be used |
| 54 |
/// with \ref SplitNodes. |
|
| 61 |
/// along with the \ref SplitNodes adaptor. |
|
| 55 | 62 |
#ifdef DOXYGEN |
| 56 |
template <typename |
|
| 63 |
template <typename GR, typename LEN> |
|
| 57 | 64 |
#else |
| 58 |
template < typename Digraph = ListDigraph, |
|
| 59 |
typename LengthMap = typename Digraph::template ArcMap<int> > |
|
| 65 |
template < typename GR, |
|
| 66 |
typename LEN = typename GR::template ArcMap<int> > |
|
| 60 | 67 |
#endif |
| 61 | 68 |
class Suurballe |
| 62 | 69 |
{
|
| 63 |
TEMPLATE_DIGRAPH_TYPEDEFS( |
|
| 70 |
TEMPLATE_DIGRAPH_TYPEDEFS(GR); |
|
| 64 | 71 |
|
| 65 |
typedef typename LengthMap::Value Length; |
|
| 66 | 72 |
typedef ConstMap<Arc, int> ConstArcMap; |
| 67 |
typedef typename |
|
| 73 |
typedef typename GR::template NodeMap<Arc> PredMap; |
|
| 68 | 74 |
|
| 69 | 75 |
public: |
| 70 | 76 |
|
| 77 |
/// The type of the digraph the algorithm runs on. |
|
| 78 |
typedef GR Digraph; |
|
| 79 |
/// The type of the length map. |
|
| 80 |
typedef LEN LengthMap; |
|
| 81 |
/// The type of the lengths. |
|
| 82 |
typedef typename LengthMap::Value Length; |
|
| 83 |
#ifdef DOXYGEN |
|
| 84 |
/// The type of the flow map. |
|
| 85 |
typedef GR::ArcMap<int> FlowMap; |
|
| 86 |
/// The type of the potential map. |
|
| 87 |
typedef GR::NodeMap<Length> PotentialMap; |
|
| 88 |
#else |
|
| 71 | 89 |
/// The type of the flow map. |
| 72 | 90 |
typedef typename Digraph::template ArcMap<int> FlowMap; |
| 73 | 91 |
/// The type of the potential map. |
| 74 | 92 |
typedef typename Digraph::template NodeMap<Length> PotentialMap; |
| 93 |
#endif |
|
| 94 |
|
|
| 75 | 95 |
/// The type of the path structures. |
| 76 |
typedef SimplePath< |
|
| 96 |
typedef SimplePath<GR> Path; |
|
| 77 | 97 |
|
| 78 | 98 |
private: |
| 79 | 99 |
|
| 80 |
/// \brief Special implementation of the Dijkstra algorithm |
|
| 81 |
/// for finding shortest paths in the residual network. |
|
| 82 |
/// |
|
| 83 |
/// \ref ResidualDijkstra is a special implementation of the |
|
| 84 |
/// \ref Dijkstra algorithm for finding shortest paths in the |
|
| 85 |
/// residual network of the digraph with respect to the reduced arc |
|
| 86 |
/// lengths and modifying the node potentials according to the |
|
| 87 |
/// distance of the nodes. |
|
| 100 |
// ResidualDijkstra is a special implementation of the |
|
| 101 |
// Dijkstra algorithm for finding shortest paths in the |
|
| 102 |
// residual network with respect to the reduced arc lengths |
|
| 103 |
// and modifying the node potentials according to the |
|
| 104 |
// distance of the nodes. |
|
| 88 | 105 |
class ResidualDijkstra |
| 89 | 106 |
{
|
| 90 | 107 |
typedef typename Digraph::template NodeMap<int> HeapCrossRef; |
| 91 | 108 |
typedef BinHeap<Length, HeapCrossRef> Heap; |
| 92 | 109 |
|
| 93 | 110 |
private: |
| 94 | 111 |
|
| 95 | 112 |
// The digraph the algorithm runs on |
| 96 | 113 |
const Digraph &_graph; |
| 97 | 114 |
|
| 98 | 115 |
// The main maps |
| 99 | 116 |
const FlowMap &_flow; |
| 100 | 117 |
const LengthMap &_length; |
| 101 | 118 |
PotentialMap &_potential; |
| 102 | 119 |
|
| 103 | 120 |
// The distance map |
| 104 | 121 |
PotentialMap _dist; |
| 105 | 122 |
// The pred arc map |
| 106 | 123 |
PredMap &_pred; |
| 107 | 124 |
// The processed (i.e. permanently labeled) nodes |
| 108 | 125 |
std::vector<Node> _proc_nodes; |
| 109 | 126 |
|
| 110 | 127 |
Node _s; |
| 111 | 128 |
Node _t; |
| 112 | 129 |
|
| 113 | 130 |
public: |
| 114 | 131 |
|
| 115 | 132 |
/// Constructor. |
| 116 |
ResidualDijkstra( const Digraph & |
|
| 133 |
ResidualDijkstra( const Digraph &graph, |
|
| 117 | 134 |
const FlowMap &flow, |
| 118 | 135 |
const LengthMap &length, |
| 119 | 136 |
PotentialMap &potential, |
| 120 | 137 |
PredMap &pred, |
| 121 | 138 |
Node s, Node t ) : |
| 122 |
_graph(digraph), _flow(flow), _length(length), _potential(potential), |
|
| 123 |
_dist(digraph), _pred(pred), _s(s), _t(t) {}
|
|
| 139 |
_graph(graph), _flow(flow), _length(length), _potential(potential), |
|
| 140 |
_dist(graph), _pred(pred), _s(s), _t(t) {}
|
|
| 124 | 141 |
|
| 125 | 142 |
/// \brief Run the algorithm. It returns \c true if a path is found |
| 126 | 143 |
/// from the source node to the target node. |
| 127 | 144 |
bool run() {
|
| 128 | 145 |
HeapCrossRef heap_cross_ref(_graph, Heap::PRE_HEAP); |
| 129 | 146 |
Heap heap(heap_cross_ref); |
| 130 | 147 |
heap.push(_s, 0); |
| 131 | 148 |
_pred[_s] = INVALID; |
| 132 | 149 |
_proc_nodes.clear(); |
| 133 | 150 |
|
| 134 | 151 |
// Process nodes |
| 135 | 152 |
while (!heap.empty() && heap.top() != _t) {
|
| 136 | 153 |
Node u = heap.top(), v; |
| 137 | 154 |
Length d = heap.prio() + _potential[u], nd; |
| 138 | 155 |
_dist[u] = heap.prio(); |
| 139 | 156 |
heap.pop(); |
| 140 | 157 |
_proc_nodes.push_back(u); |
| 141 | 158 |
|
| 142 | 159 |
// Traverse outgoing arcs |
| 143 | 160 |
for (OutArcIt e(_graph, u); e != INVALID; ++e) {
|
| 144 | 161 |
if (_flow[e] == 0) {
|
| 145 | 162 |
v = _graph.target(e); |
| 146 | 163 |
switch(heap.state(v)) {
|
| 147 | 164 |
case Heap::PRE_HEAP: |
| 148 | 165 |
heap.push(v, d + _length[e] - _potential[v]); |
| 149 | 166 |
_pred[v] = e; |
| 150 | 167 |
break; |
| 151 | 168 |
case Heap::IN_HEAP: |
| 152 | 169 |
nd = d + _length[e] - _potential[v]; |
| 153 | 170 |
if (nd < heap[v]) {
|
| 154 | 171 |
heap.decrease(v, nd); |
| 155 | 172 |
_pred[v] = e; |
| 156 | 173 |
} |
| 157 | 174 |
break; |
| 158 | 175 |
case Heap::POST_HEAP: |
| 159 | 176 |
break; |
| 160 | 177 |
} |
| 161 | 178 |
} |
| 162 | 179 |
} |
| 163 | 180 |
|
| 164 | 181 |
// Traverse incoming arcs |
| 165 | 182 |
for (InArcIt e(_graph, u); e != INVALID; ++e) {
|
| 166 | 183 |
if (_flow[e] == 1) {
|
| 167 | 184 |
v = _graph.source(e); |
| 168 | 185 |
switch(heap.state(v)) {
|
| 169 | 186 |
case Heap::PRE_HEAP: |
| 170 | 187 |
heap.push(v, d - _length[e] - _potential[v]); |
| 171 | 188 |
_pred[v] = e; |
| 172 | 189 |
break; |
| 173 | 190 |
case Heap::IN_HEAP: |
| 174 | 191 |
nd = d - _length[e] - _potential[v]; |
| 175 | 192 |
if (nd < heap[v]) {
|
| 176 | 193 |
heap.decrease(v, nd); |
| 177 | 194 |
_pred[v] = e; |
| 178 | 195 |
} |
| 179 | 196 |
break; |
| 180 | 197 |
case Heap::POST_HEAP: |
| 181 | 198 |
break; |
| 182 | 199 |
} |
| 183 | 200 |
} |
| 184 | 201 |
} |
| 185 | 202 |
} |
| 186 | 203 |
if (heap.empty()) return false; |
| 187 | 204 |
|
| 188 | 205 |
// Update potentials of processed nodes |
| 189 | 206 |
Length t_dist = heap.prio(); |
| 190 | 207 |
for (int i = 0; i < int(_proc_nodes.size()); ++i) |
| 191 | 208 |
_potential[_proc_nodes[i]] += _dist[_proc_nodes[i]] - t_dist; |
| 192 | 209 |
return true; |
| 193 | 210 |
} |
| 194 | 211 |
|
| 195 | 212 |
}; //class ResidualDijkstra |
| 196 | 213 |
|
| 197 | 214 |
private: |
| 198 | 215 |
|
| 199 | 216 |
// The digraph the algorithm runs on |
| 200 | 217 |
const Digraph &_graph; |
| 201 | 218 |
// The length map |
| 202 | 219 |
const LengthMap &_length; |
| 203 | 220 |
|
| 204 | 221 |
// Arc map of the current flow |
| 205 | 222 |
FlowMap *_flow; |
| 206 | 223 |
bool _local_flow; |
| 207 | 224 |
// Node map of the current potentials |
| 208 | 225 |
PotentialMap *_potential; |
| 209 | 226 |
bool _local_potential; |
| 210 | 227 |
|
| 211 | 228 |
// The source node |
| 212 | 229 |
Node _source; |
| 213 | 230 |
// The target node |
| 214 | 231 |
Node _target; |
| 215 | 232 |
|
| 216 | 233 |
// Container to store the found paths |
| 217 | 234 |
std::vector< SimplePath<Digraph> > paths; |
| 218 | 235 |
int _path_num; |
| 219 | 236 |
|
| 220 | 237 |
// The pred arc map |
| 221 | 238 |
PredMap _pred; |
| 222 | 239 |
// Implementation of the Dijkstra algorithm for finding augmenting |
| 223 | 240 |
// shortest paths in the residual network |
| 224 | 241 |
ResidualDijkstra *_dijkstra; |
| 225 | 242 |
|
| 226 | 243 |
public: |
| 227 | 244 |
|
| 228 | 245 |
/// \brief Constructor. |
| 229 | 246 |
/// |
| 230 | 247 |
/// Constructor. |
| 231 | 248 |
/// |
| 232 |
/// \param |
|
| 249 |
/// \param graph The digraph the algorithm runs on. |
|
| 233 | 250 |
/// \param length The length (cost) values of the arcs. |
| 234 |
/// \param s The source node. |
|
| 235 |
/// \param t The target node. |
|
| 236 |
Suurballe( const Digraph &digraph, |
|
| 237 |
const LengthMap &length, |
|
| 238 |
Node s, Node t ) : |
|
| 239 |
_graph(digraph), _length(length), _flow(0), _local_flow(false), |
|
| 240 |
_potential(0), _local_potential(false), _source(s), _target(t), |
|
| 241 |
_pred(digraph) {}
|
|
| 251 |
Suurballe( const Digraph &graph, |
|
| 252 |
const LengthMap &length ) : |
|
| 253 |
_graph(graph), _length(length), _flow(0), _local_flow(false), |
|
| 254 |
_potential(0), _local_potential(false), _pred(graph) |
|
| 255 |
{
|
|
| 256 |
LEMON_ASSERT(std::numeric_limits<Length>::is_integer, |
|
| 257 |
"The length type of Suurballe must be integer"); |
|
| 258 |
} |
|
| 242 | 259 |
|
| 243 | 260 |
/// Destructor. |
| 244 | 261 |
~Suurballe() {
|
| 245 | 262 |
if (_local_flow) delete _flow; |
| 246 | 263 |
if (_local_potential) delete _potential; |
| 247 | 264 |
delete _dijkstra; |
| 248 | 265 |
} |
| 249 | 266 |
|
| 250 | 267 |
/// \brief Set the flow map. |
| 251 | 268 |
/// |
| 252 | 269 |
/// This function sets the flow map. |
| 270 |
/// If it is not used before calling \ref run() or \ref init(), |
|
| 271 |
/// an instance will be allocated automatically. The destructor |
|
| 272 |
/// deallocates this automatically allocated map, of course. |
|
| 253 | 273 |
/// |
| 254 |
/// The found flow contains only 0 and 1 values. It is the union of |
|
| 255 |
/// the found arc-disjoint paths. |
|
| 274 |
/// The found flow contains only 0 and 1 values, since it is the |
|
| 275 |
/// union of the found arc-disjoint paths. |
|
| 256 | 276 |
/// |
| 257 |
/// \return |
|
| 277 |
/// \return <tt>(*this)</tt> |
|
| 258 | 278 |
Suurballe& flowMap(FlowMap &map) {
|
| 259 | 279 |
if (_local_flow) {
|
| 260 | 280 |
delete _flow; |
| 261 | 281 |
_local_flow = false; |
| 262 | 282 |
} |
| 263 | 283 |
_flow = ↦ |
| 264 | 284 |
return *this; |
| 265 | 285 |
} |
| 266 | 286 |
|
| 267 | 287 |
/// \brief Set the potential map. |
| 268 | 288 |
/// |
| 269 | 289 |
/// This function sets the potential map. |
| 290 |
/// If it is not used before calling \ref run() or \ref init(), |
|
| 291 |
/// an instance will be allocated automatically. The destructor |
|
| 292 |
/// deallocates this automatically allocated map, of course. |
|
| 270 | 293 |
/// |
| 271 |
/// The potentials provide the dual solution of the underlying |
|
| 272 |
/// minimum cost flow problem. |
|
| 294 |
/// The node potentials provide the dual solution of the underlying |
|
| 295 |
/// \ref min_cost_flow "minimum cost flow problem". |
|
| 273 | 296 |
/// |
| 274 |
/// \return |
|
| 297 |
/// \return <tt>(*this)</tt> |
|
| 275 | 298 |
Suurballe& potentialMap(PotentialMap &map) {
|
| 276 | 299 |
if (_local_potential) {
|
| 277 | 300 |
delete _potential; |
| 278 | 301 |
_local_potential = false; |
| 279 | 302 |
} |
| 280 | 303 |
_potential = ↦ |
| 281 | 304 |
return *this; |
| 282 | 305 |
} |
| 283 | 306 |
|
| 284 |
/// \name Execution |
|
| 307 |
/// \name Execution Control |
|
| 285 | 308 |
/// The simplest way to execute the algorithm is to call the run() |
| 286 | 309 |
/// function. |
| 287 | 310 |
/// \n |
| 288 | 311 |
/// If you only need the flow that is the union of the found |
| 289 | 312 |
/// arc-disjoint paths, you may call init() and findFlow(). |
| 290 | 313 |
|
| 291 | 314 |
/// @{
|
| 292 | 315 |
|
| 293 | 316 |
/// \brief Run the algorithm. |
| 294 | 317 |
/// |
| 295 | 318 |
/// This function runs the algorithm. |
| 296 | 319 |
/// |
| 320 |
/// \param s The source node. |
|
| 321 |
/// \param t The target node. |
|
| 297 | 322 |
/// \param k The number of paths to be found. |
| 298 | 323 |
/// |
| 299 | 324 |
/// \return \c k if there are at least \c k arc-disjoint paths from |
| 300 | 325 |
/// \c s to \c t in the digraph. Otherwise it returns the number of |
| 301 | 326 |
/// arc-disjoint paths found. |
| 302 | 327 |
/// |
| 303 |
/// \note Apart from the return value, <tt>s.run(k)</tt> is just a |
|
| 304 |
/// shortcut of the following code. |
|
| 328 |
/// \note Apart from the return value, <tt>s.run(s, t, k)</tt> is |
|
| 329 |
/// just a shortcut of the following code. |
|
| 305 | 330 |
/// \code |
| 306 |
/// s.init(); |
|
| 307 |
/// s.findFlow(k); |
|
| 331 |
/// s.init(s); |
|
| 332 |
/// s.findFlow(t, k); |
|
| 308 | 333 |
/// s.findPaths(); |
| 309 | 334 |
/// \endcode |
| 310 |
int run(int k = 2) {
|
|
| 311 |
init(); |
|
| 312 |
|
|
| 335 |
int run(const Node& s, const Node& t, int k = 2) {
|
|
| 336 |
init(s); |
|
| 337 |
findFlow(t, k); |
|
| 313 | 338 |
findPaths(); |
| 314 | 339 |
return _path_num; |
| 315 | 340 |
} |
| 316 | 341 |
|
| 317 | 342 |
/// \brief Initialize the algorithm. |
| 318 | 343 |
/// |
| 319 | 344 |
/// This function initializes the algorithm. |
| 320 |
|
|
| 345 |
/// |
|
| 346 |
/// \param s The source node. |
|
| 347 |
void init(const Node& s) {
|
|
| 348 |
_source = s; |
|
| 349 |
|
|
| 321 | 350 |
// Initialize maps |
| 322 | 351 |
if (!_flow) {
|
| 323 | 352 |
_flow = new FlowMap(_graph); |
| 324 | 353 |
_local_flow = true; |
| 325 | 354 |
} |
| 326 | 355 |
if (!_potential) {
|
| 327 | 356 |
_potential = new PotentialMap(_graph); |
| 328 | 357 |
_local_potential = true; |
| 329 | 358 |
} |
| 330 | 359 |
for (ArcIt e(_graph); e != INVALID; ++e) (*_flow)[e] = 0; |
| 331 | 360 |
for (NodeIt n(_graph); n != INVALID; ++n) (*_potential)[n] = 0; |
| 332 |
|
|
| 333 |
_dijkstra = new ResidualDijkstra( _graph, *_flow, _length, |
|
| 334 |
*_potential, _pred, |
|
| 335 |
_source, _target ); |
|
| 336 | 361 |
} |
| 337 | 362 |
|
| 338 |
/// \brief Execute the successive shortest path algorithm to find |
|
| 339 |
/// an optimal flow. |
|
| 363 |
/// \brief Execute the algorithm to find an optimal flow. |
|
| 340 | 364 |
/// |
| 341 | 365 |
/// This function executes the successive shortest path algorithm to |
| 342 |
/// find a minimum cost flow, which is the union of \c k or less |
|
| 366 |
/// find a minimum cost flow, which is the union of \c k (or less) |
|
| 343 | 367 |
/// arc-disjoint paths. |
| 344 | 368 |
/// |
| 369 |
/// \param t The target node. |
|
| 370 |
/// \param k The number of paths to be found. |
|
| 371 |
/// |
|
| 345 | 372 |
/// \return \c k if there are at least \c k arc-disjoint paths from |
| 346 |
/// \c s to \c t in the digraph. Otherwise it returns the number of |
|
| 347 |
/// arc-disjoint paths found. |
|
| 373 |
/// the source node to the given node \c t in the digraph. |
|
| 374 |
/// Otherwise it returns the number of arc-disjoint paths found. |
|
| 348 | 375 |
/// |
| 349 | 376 |
/// \pre \ref init() must be called before using this function. |
| 350 |
int findFlow(int k = 2) {
|
|
| 377 |
int findFlow(const Node& t, int k = 2) {
|
|
| 378 |
_target = t; |
|
| 379 |
_dijkstra = |
|
| 380 |
new ResidualDijkstra( _graph, *_flow, _length, *_potential, _pred, |
|
| 381 |
_source, _target ); |
|
| 382 |
|
|
| 351 | 383 |
// Find shortest paths |
| 352 | 384 |
_path_num = 0; |
| 353 | 385 |
while (_path_num < k) {
|
| 354 | 386 |
// Run Dijkstra |
| 355 | 387 |
if (!_dijkstra->run()) break; |
| 356 | 388 |
++_path_num; |
| 357 | 389 |
|
| 358 | 390 |
// Set the flow along the found shortest path |
| 359 | 391 |
Node u = _target; |
| 360 | 392 |
Arc e; |
| 361 | 393 |
while ((e = _pred[u]) != INVALID) {
|
| 362 | 394 |
if (u == _graph.target(e)) {
|
| 363 | 395 |
(*_flow)[e] = 1; |
| 364 | 396 |
u = _graph.source(e); |
| 365 | 397 |
} else {
|
| 366 | 398 |
(*_flow)[e] = 0; |
| 367 | 399 |
u = _graph.target(e); |
| 368 | 400 |
} |
| 369 | 401 |
} |
| 370 | 402 |
} |
| 371 | 403 |
return _path_num; |
| 372 | 404 |
} |
| 373 | 405 |
|
| 374 | 406 |
/// \brief Compute the paths from the flow. |
| 375 | 407 |
/// |
| 376 |
/// This function computes the paths from the flow |
|
| 408 |
/// This function computes the paths from the found minimum cost flow, |
|
| 409 |
/// which is the union of some arc-disjoint paths. |
|
| 377 | 410 |
/// |
| 378 | 411 |
/// \pre \ref init() and \ref findFlow() must be called before using |
| 379 | 412 |
/// this function. |
| 380 | 413 |
void findPaths() {
|
| 381 |
// Create the residual flow map (the union of the paths not found |
|
| 382 |
// so far) |
|
| 383 | 414 |
FlowMap res_flow(_graph); |
| 384 | 415 |
for(ArcIt a(_graph); a != INVALID; ++a) res_flow[a] = (*_flow)[a]; |
| 385 | 416 |
|
| 386 | 417 |
paths.clear(); |
| 387 | 418 |
paths.resize(_path_num); |
| 388 | 419 |
for (int i = 0; i < _path_num; ++i) {
|
| 389 | 420 |
Node n = _source; |
| 390 | 421 |
while (n != _target) {
|
| 391 | 422 |
OutArcIt e(_graph, n); |
| 392 | 423 |
for ( ; res_flow[e] == 0; ++e) ; |
| 393 | 424 |
n = _graph.target(e); |
| 394 | 425 |
paths[i].addBack(e); |
| 395 | 426 |
res_flow[e] = 0; |
| 396 | 427 |
} |
| 397 | 428 |
} |
| 398 | 429 |
} |
| 399 | 430 |
|
| 400 | 431 |
/// @} |
| 401 | 432 |
|
| 402 | 433 |
/// \name Query Functions |
| 403 | 434 |
/// The results of the algorithm can be obtained using these |
| 404 | 435 |
/// functions. |
| 405 | 436 |
/// \n The algorithm should be executed before using them. |
| 406 | 437 |
|
| 407 | 438 |
/// @{
|
| 408 | 439 |
|
| 409 |
/// \brief Return |
|
| 440 |
/// \brief Return the total length of the found paths. |
|
| 441 |
/// |
|
| 442 |
/// This function returns the total length of the found paths, i.e. |
|
| 443 |
/// the total cost of the found flow. |
|
| 444 |
/// The complexity of the function is O(e). |
|
| 445 |
/// |
|
| 446 |
/// \pre \ref run() or \ref findFlow() must be called before using |
|
| 447 |
/// this function. |
|
| 448 |
Length totalLength() const {
|
|
| 449 |
Length c = 0; |
|
| 450 |
for (ArcIt e(_graph); e != INVALID; ++e) |
|
| 451 |
c += (*_flow)[e] * _length[e]; |
|
| 452 |
return c; |
|
| 453 |
} |
|
| 454 |
|
|
| 455 |
/// \brief Return the flow value on the given arc. |
|
| 456 |
/// |
|
| 457 |
/// This function returns the flow value on the given arc. |
|
| 458 |
/// It is \c 1 if the arc is involved in one of the found arc-disjoint |
|
| 459 |
/// paths, otherwise it is \c 0. |
|
| 460 |
/// |
|
| 461 |
/// \pre \ref run() or \ref findFlow() must be called before using |
|
| 462 |
/// this function. |
|
| 463 |
int flow(const Arc& arc) const {
|
|
| 464 |
return (*_flow)[arc]; |
|
| 465 |
} |
|
| 466 |
|
|
| 467 |
/// \brief Return a const reference to an arc map storing the |
|
| 410 | 468 |
/// found flow. |
| 411 | 469 |
/// |
| 412 |
/// This function returns a const reference to |
|
| 470 |
/// This function returns a const reference to an arc map storing |
|
| 413 | 471 |
/// the flow that is the union of the found arc-disjoint paths. |
| 414 | 472 |
/// |
| 415 | 473 |
/// \pre \ref run() or \ref findFlow() must be called before using |
| 416 | 474 |
/// this function. |
| 417 | 475 |
const FlowMap& flowMap() const {
|
| 418 | 476 |
return *_flow; |
| 419 | 477 |
} |
| 420 | 478 |
|
| 421 |
/// \brief Return a const reference to the node map storing the |
|
| 422 |
/// found potentials (the dual solution). |
|
| 423 |
/// |
|
| 424 |
/// This function returns a const reference to the node map storing |
|
| 425 |
/// the found potentials that provide the dual solution of the |
|
| 426 |
/// underlying minimum cost flow problem. |
|
| 427 |
/// |
|
| 428 |
/// \pre \ref run() or \ref findFlow() must be called before using |
|
| 429 |
/// this function. |
|
| 430 |
const PotentialMap& potentialMap() const {
|
|
| 431 |
return *_potential; |
|
| 432 |
} |
|
| 433 |
|
|
| 434 |
/// \brief Return the flow on the given arc. |
|
| 435 |
/// |
|
| 436 |
/// This function returns the flow on the given arc. |
|
| 437 |
/// It is \c 1 if the arc is involved in one of the found paths, |
|
| 438 |
/// otherwise it is \c 0. |
|
| 439 |
/// |
|
| 440 |
/// \pre \ref run() or \ref findFlow() must be called before using |
|
| 441 |
/// this function. |
|
| 442 |
int flow(const Arc& arc) const {
|
|
| 443 |
return (*_flow)[arc]; |
|
| 444 |
} |
|
| 445 |
|
|
| 446 | 479 |
/// \brief Return the potential of the given node. |
| 447 | 480 |
/// |
| 448 | 481 |
/// This function returns the potential of the given node. |
| 482 |
/// The node potentials provide the dual solution of the |
|
| 483 |
/// underlying \ref min_cost_flow "minimum cost flow problem". |
|
| 449 | 484 |
/// |
| 450 | 485 |
/// \pre \ref run() or \ref findFlow() must be called before using |
| 451 | 486 |
/// this function. |
| 452 | 487 |
Length potential(const Node& node) const {
|
| 453 | 488 |
return (*_potential)[node]; |
| 454 | 489 |
} |
| 455 | 490 |
|
| 456 |
/// \brief Return |
|
| 491 |
/// \brief Return a const reference to a node map storing the |
|
| 492 |
/// found potentials (the dual solution). |
|
| 457 | 493 |
/// |
| 458 |
/// This function returns the total length (cost) of the found paths |
|
| 459 |
/// (flow). The complexity of the function is \f$ O(e) \f$. |
|
| 494 |
/// This function returns a const reference to a node map storing |
|
| 495 |
/// the found potentials that provide the dual solution of the |
|
| 496 |
/// underlying \ref min_cost_flow "minimum cost flow problem". |
|
| 460 | 497 |
/// |
| 461 | 498 |
/// \pre \ref run() or \ref findFlow() must be called before using |
| 462 | 499 |
/// this function. |
| 463 |
Length totalLength() const {
|
|
| 464 |
Length c = 0; |
|
| 465 |
for (ArcIt e(_graph); e != INVALID; ++e) |
|
| 466 |
c += (*_flow)[e] * _length[e]; |
|
| 467 |
|
|
| 500 |
const PotentialMap& potentialMap() const {
|
|
| 501 |
return *_potential; |
|
| 468 | 502 |
} |
| 469 | 503 |
|
| 470 | 504 |
/// \brief Return the number of the found paths. |
| 471 | 505 |
/// |
| 472 | 506 |
/// This function returns the number of the found paths. |
| 473 | 507 |
/// |
| 474 | 508 |
/// \pre \ref run() or \ref findFlow() must be called before using |
| 475 | 509 |
/// this function. |
| 476 | 510 |
int pathNum() const {
|
| 477 | 511 |
return _path_num; |
| 478 | 512 |
} |
| 479 | 513 |
|
| 480 | 514 |
/// \brief Return a const reference to the specified path. |
| 481 | 515 |
/// |
| 482 | 516 |
/// This function returns a const reference to the specified path. |
| 483 | 517 |
/// |
| 484 |
/// \param i The function returns the |
|
| 518 |
/// \param i The function returns the <tt>i</tt>-th path. |
|
| 485 | 519 |
/// \c i must be between \c 0 and <tt>%pathNum()-1</tt>. |
| 486 | 520 |
/// |
| 487 | 521 |
/// \pre \ref run() or \ref findPaths() must be called before using |
| 488 | 522 |
/// this function. |
| 489 | 523 |
Path path(int i) const {
|
| 490 | 524 |
return paths[i]; |
| 491 | 525 |
} |
| 492 | 526 |
|
| 493 | 527 |
/// @} |
| 494 | 528 |
|
| 495 | 529 |
}; //class Suurballe |
| 496 | 530 |
|
| 497 | 531 |
///@} |
| 498 | 532 |
|
| 499 | 533 |
} //namespace lemon |
| 500 | 534 |
|
| 501 | 535 |
#endif //LEMON_SUURBALLE_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_TIME_MEASURE_H |
| 20 | 20 |
#define LEMON_TIME_MEASURE_H |
| 21 | 21 |
|
| 22 | 22 |
///\ingroup timecount |
| 23 | 23 |
///\file |
| 24 | 24 |
///\brief Tools for measuring cpu usage |
| 25 | 25 |
|
| 26 | 26 |
#ifdef WIN32 |
| 27 |
#define WIN32_LEAN_AND_MEAN |
|
| 28 |
#define NOMINMAX |
|
| 29 |
#include <windows.h> |
|
| 30 |
#include <cmath> |
|
| 27 |
#include <lemon/bits/windows.h> |
|
| 31 | 28 |
#else |
| 29 |
#include <unistd.h> |
|
| 32 | 30 |
#include <sys/times.h> |
| 33 | 31 |
#include <sys/time.h> |
| 34 | 32 |
#endif |
| 35 | 33 |
|
| 36 | 34 |
#include <string> |
| 37 | 35 |
#include <fstream> |
| 38 | 36 |
#include <iostream> |
| 39 | 37 |
|
| 40 | 38 |
namespace lemon {
|
| 41 | 39 |
|
| 42 | 40 |
/// \addtogroup timecount |
| 43 | 41 |
/// @{
|
| 44 | 42 |
|
| 45 | 43 |
/// A class to store (cpu)time instances. |
| 46 | 44 |
|
| 47 | 45 |
/// This class stores five time values. |
| 48 | 46 |
/// - a real time |
| 49 | 47 |
/// - a user cpu time |
| 50 | 48 |
/// - a system cpu time |
| 51 | 49 |
/// - a user cpu time of children |
| 52 | 50 |
/// - a system cpu time of children |
| 53 | 51 |
/// |
| 54 | 52 |
/// TimeStamp's can be added to or substracted from each other and |
| 55 | 53 |
/// they can be pushed to a stream. |
| 56 | 54 |
/// |
| 57 | 55 |
/// In most cases, perhaps the \ref Timer or the \ref TimeReport |
| 58 | 56 |
/// class is what you want to use instead. |
| 59 | 57 |
|
| 60 | 58 |
class TimeStamp |
| 61 | 59 |
{
|
| 62 | 60 |
double utime; |
| 63 | 61 |
double stime; |
| 64 | 62 |
double cutime; |
| 65 | 63 |
double cstime; |
| 66 | 64 |
double rtime; |
| 67 | 65 |
|
| 68 | 66 |
void _reset() {
|
| 69 | 67 |
utime = stime = cutime = cstime = rtime = 0; |
| 70 | 68 |
} |
| 71 | 69 |
|
| 72 | 70 |
public: |
| 73 | 71 |
|
| 74 | 72 |
///Read the current time values of the process |
| 75 | 73 |
void stamp() |
| 76 | 74 |
{
|
| 77 | 75 |
#ifndef WIN32 |
| 78 | 76 |
timeval tv; |
| 79 | 77 |
gettimeofday(&tv, 0); |
| 80 | 78 |
rtime=tv.tv_sec+double(tv.tv_usec)/1e6; |
| 81 | 79 |
|
| 82 | 80 |
tms ts; |
| 83 | 81 |
double tck=sysconf(_SC_CLK_TCK); |
| 84 | 82 |
times(&ts); |
| 85 | 83 |
utime=ts.tms_utime/tck; |
| 86 | 84 |
stime=ts.tms_stime/tck; |
| 87 | 85 |
cutime=ts.tms_cutime/tck; |
| 88 | 86 |
cstime=ts.tms_cstime/tck; |
| 89 | 87 |
#else |
| 90 |
static const double ch = 4294967296.0e-7; |
|
| 91 |
static const double cl = 1.0e-7; |
|
| 92 |
|
|
| 93 |
FILETIME system; |
|
| 94 |
GetSystemTimeAsFileTime(&system); |
|
| 95 |
rtime = ch * system.dwHighDateTime + cl * system.dwLowDateTime; |
|
| 96 |
|
|
| 97 |
FILETIME create, exit, kernel, user; |
|
| 98 |
if (GetProcessTimes(GetCurrentProcess(),&create, &exit, &kernel, &user)) {
|
|
| 99 |
utime = ch * user.dwHighDateTime + cl * user.dwLowDateTime; |
|
| 100 |
stime = ch * kernel.dwHighDateTime + cl * kernel.dwLowDateTime; |
|
| 101 |
cutime = 0; |
|
| 102 |
cstime = 0; |
|
| 103 |
} else {
|
|
| 104 |
rtime = 0; |
|
| 105 |
utime = 0; |
|
| 106 |
stime = 0; |
|
| 107 |
cutime = 0; |
|
| 108 |
cstime = 0; |
|
| 109 |
} |
|
| 88 |
bits::getWinProcTimes(rtime, utime, stime, cutime, cstime); |
|
| 110 | 89 |
#endif |
| 111 | 90 |
} |
| 112 | 91 |
|
| 113 | 92 |
/// Constructor initializing with zero |
| 114 | 93 |
TimeStamp() |
| 115 | 94 |
{ _reset(); }
|
| 116 | 95 |
///Constructor initializing with the current time values of the process |
| 117 | 96 |
TimeStamp(void *) { stamp();}
|
| 118 | 97 |
|
| 119 | 98 |
///Set every time value to zero |
| 120 | 99 |
TimeStamp &reset() {_reset();return *this;}
|
| 121 | 100 |
|
| 122 | 101 |
///\e |
| 123 | 102 |
TimeStamp &operator+=(const TimeStamp &b) |
| 124 | 103 |
{
|
| 125 | 104 |
utime+=b.utime; |
| 126 | 105 |
stime+=b.stime; |
| 127 | 106 |
cutime+=b.cutime; |
| 128 | 107 |
cstime+=b.cstime; |
| 129 | 108 |
rtime+=b.rtime; |
| 130 | 109 |
return *this; |
| 131 | 110 |
} |
| 132 | 111 |
///\e |
| 133 | 112 |
TimeStamp operator+(const TimeStamp &b) const |
| 134 | 113 |
{
|
| 135 | 114 |
TimeStamp t(*this); |
| 136 | 115 |
return t+=b; |
| 137 | 116 |
} |
| 138 | 117 |
///\e |
| 139 | 118 |
TimeStamp &operator-=(const TimeStamp &b) |
| 140 | 119 |
{
|
| 141 | 120 |
utime-=b.utime; |
| 142 | 121 |
stime-=b.stime; |
| 143 | 122 |
cutime-=b.cutime; |
| 144 | 123 |
cstime-=b.cstime; |
| 145 | 124 |
rtime-=b.rtime; |
| 146 | 125 |
return *this; |
| 147 | 126 |
} |
| 148 | 127 |
///\e |
| 149 | 128 |
TimeStamp operator-(const TimeStamp &b) const |
| 150 | 129 |
{
|
| 151 | 130 |
TimeStamp t(*this); |
| 152 | 131 |
return t-=b; |
| 153 | 132 |
} |
| 154 | 133 |
///\e |
| 155 | 134 |
TimeStamp &operator*=(double b) |
| 156 | 135 |
{
|
| 157 | 136 |
utime*=b; |
| 158 | 137 |
stime*=b; |
| 159 | 138 |
cutime*=b; |
| 160 | 139 |
cstime*=b; |
| 161 | 140 |
rtime*=b; |
| 162 | 141 |
return *this; |
| 163 | 142 |
} |
| 164 | 143 |
///\e |
| 165 | 144 |
TimeStamp operator*(double b) const |
| 166 | 145 |
{
|
| 167 | 146 |
TimeStamp t(*this); |
| 168 | 147 |
return t*=b; |
| 169 | 148 |
} |
| 170 | 149 |
friend TimeStamp operator*(double b,const TimeStamp &t); |
| 171 | 150 |
///\e |
| 172 | 151 |
TimeStamp &operator/=(double b) |
| 173 | 152 |
{
|
| 174 | 153 |
utime/=b; |
| 175 | 154 |
stime/=b; |
| 176 | 155 |
cutime/=b; |
| 177 | 156 |
cstime/=b; |
| 178 | 157 |
rtime/=b; |
| 179 | 158 |
return *this; |
| 180 | 159 |
} |
| 181 | 160 |
///\e |
| 182 | 161 |
TimeStamp operator/(double b) const |
| 183 | 162 |
{
|
| 184 | 163 |
TimeStamp t(*this); |
| 185 | 164 |
return t/=b; |
| 186 | 165 |
} |
| 187 | 166 |
///The time ellapsed since the last call of stamp() |
| 188 | 167 |
TimeStamp ellapsed() const |
| 189 | 168 |
{
|
| 190 | 169 |
TimeStamp t(NULL); |
| 191 | 170 |
return t-*this; |
| 192 | 171 |
} |
| 193 | 172 |
|
| 194 | 173 |
friend std::ostream& operator<<(std::ostream& os,const TimeStamp &t); |
| 195 | 174 |
|
| 196 | 175 |
///Gives back the user time of the process |
| 197 | 176 |
double userTime() const |
| 198 | 177 |
{
|
| 199 | 178 |
return utime; |
| 200 | 179 |
} |
| 201 | 180 |
///Gives back the system time of the process |
| 202 | 181 |
double systemTime() const |
| 203 | 182 |
{
|
| 204 | 183 |
return stime; |
| 205 | 184 |
} |
| 206 | 185 |
///Gives back the user time of the process' children |
| 207 | 186 |
|
| 208 | 187 |
///\note On <tt>WIN32</tt> platform this value is not calculated. |
| 209 | 188 |
/// |
| 210 | 189 |
double cUserTime() const |
| 211 | 190 |
{
|
| 212 | 191 |
return cutime; |
| 213 | 192 |
} |
| 214 | 193 |
///Gives back the user time of the process' children |
| 215 | 194 |
|
| 216 | 195 |
///\note On <tt>WIN32</tt> platform this value is not calculated. |
| 217 | 196 |
/// |
| 218 | 197 |
double cSystemTime() const |
| 219 | 198 |
{
|
| 220 | 199 |
return cstime; |
| 221 | 200 |
} |
| 222 | 201 |
///Gives back the real time |
| 223 | 202 |
double realTime() const {return rtime;}
|
| 224 | 203 |
}; |
| 225 | 204 |
|
| 226 |
TimeStamp operator*(double b,const TimeStamp &t) |
|
| 205 |
inline TimeStamp operator*(double b,const TimeStamp &t) |
|
| 227 | 206 |
{
|
| 228 | 207 |
return t*b; |
| 229 | 208 |
} |
| 230 | 209 |
|
| 231 | 210 |
///Prints the time counters |
| 232 | 211 |
|
| 233 | 212 |
///Prints the time counters in the following form: |
| 234 | 213 |
/// |
| 235 | 214 |
/// <tt>u: XX.XXs s: XX.XXs cu: XX.XXs cs: XX.XXs real: XX.XXs</tt> |
| 236 | 215 |
/// |
| 237 | 216 |
/// where the values are the |
| 238 | 217 |
/// \li \c u: user cpu time, |
| 239 | 218 |
/// \li \c s: system cpu time, |
| 240 | 219 |
/// \li \c cu: user cpu time of children, |
| 241 | 220 |
/// \li \c cs: system cpu time of children, |
| 242 | 221 |
/// \li \c real: real time. |
| 243 | 222 |
/// \relates TimeStamp |
| 244 | 223 |
/// \note On <tt>WIN32</tt> platform the cummulative values are not |
| 245 | 224 |
/// calculated. |
| 246 | 225 |
inline std::ostream& operator<<(std::ostream& os,const TimeStamp &t) |
| 247 | 226 |
{
|
| 248 | 227 |
os << "u: " << t.userTime() << |
| 249 | 228 |
"s, s: " << t.systemTime() << |
| 250 | 229 |
"s, cu: " << t.cUserTime() << |
| 251 | 230 |
"s, cs: " << t.cSystemTime() << |
| 252 | 231 |
"s, real: " << t.realTime() << "s"; |
| 253 | 232 |
return os; |
| 254 | 233 |
} |
| 255 | 234 |
|
| 256 | 235 |
///Class for measuring the cpu time and real time usage of the process |
| 257 | 236 |
|
| 258 | 237 |
///Class for measuring the cpu time and real time usage of the process. |
| 259 | 238 |
///It is quite easy-to-use, here is a short example. |
| 260 | 239 |
///\code |
| 261 | 240 |
/// #include<lemon/time_measure.h> |
| 262 | 241 |
/// #include<iostream> |
| 263 | 242 |
/// |
| 264 | 243 |
/// int main() |
| 265 | 244 |
/// {
|
| 266 | 245 |
/// |
| 267 | 246 |
/// ... |
| 268 | 247 |
/// |
| 269 | 248 |
/// Timer t; |
| 270 | 249 |
/// doSomething(); |
| 271 | 250 |
/// std::cout << t << '\n'; |
| 272 | 251 |
/// t.restart(); |
| 273 | 252 |
/// doSomethingElse(); |
| 274 | 253 |
/// std::cout << t << '\n'; |
| 275 | 254 |
/// |
| 276 | 255 |
/// ... |
| 277 | 256 |
/// |
| 278 | 257 |
/// } |
| 279 | 258 |
///\endcode |
| 280 | 259 |
/// |
| 281 | 260 |
///The \ref Timer can also be \ref stop() "stopped" and |
| 282 | 261 |
///\ref start() "started" again, so it is possible to compute collected |
| 283 | 262 |
///running times. |
| 284 | 263 |
/// |
| 285 | 264 |
///\warning Depending on the operation system and its actual configuration |
| 286 | 265 |
///the time counters have a certain (10ms on a typical Linux system) |
| 287 | 266 |
///granularity. |
| 288 | 267 |
///Therefore this tool is not appropriate to measure very short times. |
| 289 | 268 |
///Also, if you start and stop the timer very frequently, it could lead to |
| 290 | 269 |
///distorted results. |
| 291 | 270 |
/// |
| 292 | 271 |
///\note If you want to measure the running time of the execution of a certain |
| 293 | 272 |
///function, consider the usage of \ref TimeReport instead. |
| 294 | 273 |
/// |
| 295 | 274 |
///\sa TimeReport |
| 296 | 275 |
class Timer |
| 297 | 276 |
{
|
| 298 | 277 |
int _running; //Timer is running iff _running>0; (_running>=0 always holds) |
| 299 | 278 |
TimeStamp start_time; //This is the relativ start-time if the timer |
| 300 | 279 |
//is _running, the collected _running time otherwise. |
| 301 | 280 |
|
| 302 | 281 |
void _reset() {if(_running) start_time.stamp(); else start_time.reset();}
|
| 303 | 282 |
|
| 304 | 283 |
public: |
| 305 | 284 |
///Constructor. |
| 306 | 285 |
|
| 307 | 286 |
///\param run indicates whether or not the timer starts immediately. |
| 308 | 287 |
/// |
| 309 | 288 |
Timer(bool run=true) :_running(run) {_reset();}
|
| 310 | 289 |
|
| 311 |
///\name Control the |
|
| 290 |
///\name Control the State of the Timer |
|
| 312 | 291 |
///Basically a Timer can be either running or stopped, |
| 313 | 292 |
///but it provides a bit finer control on the execution. |
| 314 | 293 |
///The \ref lemon::Timer "Timer" also counts the number of |
| 315 | 294 |
///\ref lemon::Timer::start() "start()" executions, and it stops |
| 316 | 295 |
///only after the same amount (or more) \ref lemon::Timer::stop() |
| 317 | 296 |
///"stop()"s. This can be useful e.g. to compute the running time |
| 318 | 297 |
///of recursive functions. |
| 319 | 298 |
|
| 320 | 299 |
///@{
|
| 321 | 300 |
|
| 322 | 301 |
///Reset and stop the time counters |
| 323 | 302 |
|
| 324 | 303 |
///This function resets and stops the time counters |
| 325 | 304 |
///\sa restart() |
| 326 | 305 |
void reset() |
| 327 | 306 |
{
|
| 328 | 307 |
_running=0; |
| 329 | 308 |
_reset(); |
| 330 | 309 |
} |
| 331 | 310 |
|
| 332 | 311 |
///Start the time counters |
| 333 | 312 |
|
| 334 | 313 |
///This function starts the time counters. |
| 335 | 314 |
/// |
| 336 | 315 |
///If the timer is started more than ones, it will remain running |
| 337 | 316 |
///until the same amount of \ref stop() is called. |
| 338 | 317 |
///\sa stop() |
| 339 | 318 |
void start() |
| 340 | 319 |
{
|
| 341 | 320 |
if(_running) _running++; |
| 342 | 321 |
else {
|
| 343 | 322 |
_running=1; |
| 344 | 323 |
TimeStamp t; |
| 345 | 324 |
t.stamp(); |
| 346 | 325 |
start_time=t-start_time; |
| 347 | 326 |
} |
| 348 | 327 |
} |
| 349 | 328 |
|
| 350 | 329 |
|
| 351 | 330 |
///Stop the time counters |
| 352 | 331 |
|
| 353 | 332 |
///This function stops the time counters. If start() was executed more than |
| 354 | 333 |
///once, then the same number of stop() execution is necessary the really |
| 355 | 334 |
///stop the timer. |
| 356 | 335 |
/// |
| 357 | 336 |
///\sa halt() |
| 358 | 337 |
///\sa start() |
| 359 | 338 |
///\sa restart() |
| 360 | 339 |
///\sa reset() |
| 361 | 340 |
|
| 362 | 341 |
void stop() |
| 363 | 342 |
{
|
| 364 | 343 |
if(_running && !--_running) {
|
| 365 | 344 |
TimeStamp t; |
| 366 | 345 |
t.stamp(); |
| 367 | 346 |
start_time=t-start_time; |
| 368 | 347 |
} |
| 369 | 348 |
} |
| 370 | 349 |
|
| 371 | 350 |
///Halt (i.e stop immediately) the time counters |
| 372 | 351 |
|
| 373 | 352 |
///This function stops immediately the time counters, i.e. <tt>t.halt()</tt> |
| 374 | 353 |
///is a faster |
| 375 | 354 |
///equivalent of the following. |
| 376 | 355 |
///\code |
| 377 | 356 |
/// while(t.running()) t.stop() |
| 378 | 357 |
///\endcode |
| 379 | 358 |
/// |
| 380 | 359 |
/// |
| 381 | 360 |
///\sa stop() |
| 382 | 361 |
///\sa restart() |
| 383 | 362 |
///\sa reset() |
| 384 | 363 |
|
| 385 | 364 |
void halt() |
| 386 | 365 |
{
|
| 387 | 366 |
if(_running) {
|
| 388 | 367 |
_running=0; |
| 389 | 368 |
TimeStamp t; |
| 390 | 369 |
t.stamp(); |
| 391 | 370 |
start_time=t-start_time; |
| 392 | 371 |
} |
| 393 | 372 |
} |
| 394 | 373 |
|
| 395 | 374 |
///Returns the running state of the timer |
| 396 | 375 |
|
| 397 | 376 |
///This function returns the number of stop() exections that is |
| 398 | 377 |
///necessary to really stop the timer. |
| 399 | 378 |
///For example the timer |
| 400 | 379 |
///is running if and only if the return value is \c true |
| 401 | 380 |
///(i.e. greater than |
| 402 | 381 |
///zero). |
| 403 | 382 |
int running() { return _running; }
|
| 404 | 383 |
|
| 405 | 384 |
|
| 406 | 385 |
///Restart the time counters |
| 407 | 386 |
|
| 408 | 387 |
///This function is a shorthand for |
| 409 | 388 |
///a reset() and a start() calls. |
| 410 | 389 |
/// |
| 411 | 390 |
void restart() |
| 412 | 391 |
{
|
| 413 | 392 |
reset(); |
| 414 | 393 |
start(); |
| 415 | 394 |
} |
| 416 | 395 |
|
| 417 | 396 |
///@} |
| 418 | 397 |
|
| 419 |
///\name Query Functions for the |
|
| 398 |
///\name Query Functions for the Ellapsed Time |
|
| 420 | 399 |
|
| 421 | 400 |
///@{
|
| 422 | 401 |
|
| 423 | 402 |
///Gives back the ellapsed user time of the process |
| 424 | 403 |
double userTime() const |
| 425 | 404 |
{
|
| 426 | 405 |
return operator TimeStamp().userTime(); |
| 427 | 406 |
} |
| 428 | 407 |
///Gives back the ellapsed system time of the process |
| 429 | 408 |
double systemTime() const |
| 430 | 409 |
{
|
| 431 | 410 |
return operator TimeStamp().systemTime(); |
| 432 | 411 |
} |
| 433 | 412 |
///Gives back the ellapsed user time of the process' children |
| 434 | 413 |
|
| 435 | 414 |
///\note On <tt>WIN32</tt> platform this value is not calculated. |
| 436 | 415 |
/// |
| 437 | 416 |
double cUserTime() const |
| 438 | 417 |
{
|
| 439 | 418 |
return operator TimeStamp().cUserTime(); |
| 440 | 419 |
} |
| 441 | 420 |
///Gives back the ellapsed user time of the process' children |
| 442 | 421 |
|
| 443 | 422 |
///\note On <tt>WIN32</tt> platform this value is not calculated. |
| 444 | 423 |
/// |
| 445 | 424 |
double cSystemTime() const |
| 446 | 425 |
{
|
| 447 | 426 |
return operator TimeStamp().cSystemTime(); |
| 448 | 427 |
} |
| 449 | 428 |
///Gives back the ellapsed real time |
| 450 | 429 |
double realTime() const |
| 451 | 430 |
{
|
| 452 | 431 |
return operator TimeStamp().realTime(); |
| 453 | 432 |
} |
| 454 | 433 |
///Computes the ellapsed time |
| 455 | 434 |
|
| 456 | 435 |
///This conversion computes the ellapsed time, therefore you can print |
| 457 | 436 |
///the ellapsed time like this. |
| 458 | 437 |
///\code |
| 459 | 438 |
/// Timer t; |
| 460 | 439 |
/// doSomething(); |
| 461 | 440 |
/// std::cout << t << '\n'; |
| 462 | 441 |
///\endcode |
| 463 | 442 |
operator TimeStamp () const |
| 464 | 443 |
{
|
| 465 | 444 |
TimeStamp t; |
| 466 | 445 |
t.stamp(); |
| 467 | 446 |
return _running?t-start_time:start_time; |
| 468 | 447 |
} |
| 469 | 448 |
|
| 470 | 449 |
|
| 471 | 450 |
///@} |
| 472 | 451 |
}; |
| 473 | 452 |
|
| 474 | 453 |
///Same as Timer but prints a report on destruction. |
| 475 | 454 |
|
| 476 | 455 |
///Same as \ref Timer but prints a report on destruction. |
| 477 | 456 |
///This example shows its usage. |
| 478 | 457 |
///\code |
| 479 | 458 |
/// void myAlg(ListGraph &g,int n) |
| 480 | 459 |
/// {
|
| 481 | 460 |
/// TimeReport tr("Running time of myAlg: ");
|
| 482 | 461 |
/// ... //Here comes the algorithm |
| 483 | 462 |
/// } |
| 484 | 463 |
///\endcode |
| 485 | 464 |
/// |
| 486 | 465 |
///\sa Timer |
| 487 | 466 |
///\sa NoTimeReport |
| 488 | 467 |
class TimeReport : public Timer |
| 489 | 468 |
{
|
| 490 | 469 |
std::string _title; |
| 491 | 470 |
std::ostream &_os; |
| 492 | 471 |
public: |
| 493 | 472 |
///Constructor |
| 494 | 473 |
|
| 495 | 474 |
///Constructor. |
| 496 | 475 |
///\param title This text will be printed before the ellapsed time. |
| 497 | 476 |
///\param os The stream to print the report to. |
| 498 | 477 |
///\param run Sets whether the timer should start immediately. |
| 499 | 478 |
TimeReport(std::string title,std::ostream &os=std::cerr,bool run=true) |
| 500 | 479 |
: Timer(run), _title(title), _os(os){}
|
| 501 | 480 |
///Destructor that prints the ellapsed time |
| 502 | 481 |
~TimeReport() |
| 503 | 482 |
{
|
| 504 | 483 |
_os << _title << *this << std::endl; |
| 505 | 484 |
} |
| 506 | 485 |
}; |
| 507 | 486 |
|
| 508 | 487 |
///'Do nothing' version of TimeReport |
| 509 | 488 |
|
| 510 | 489 |
///\sa TimeReport |
| 511 | 490 |
/// |
| 512 | 491 |
class NoTimeReport |
| 513 | 492 |
{
|
| 514 | 493 |
public: |
| 515 | 494 |
///\e |
| 516 | 495 |
NoTimeReport(std::string,std::ostream &,bool) {}
|
| 517 | 496 |
///\e |
| 518 | 497 |
NoTimeReport(std::string,std::ostream &) {}
|
| 519 | 498 |
///\e |
| 520 | 499 |
NoTimeReport(std::string) {}
|
| 521 | 500 |
///\e Do nothing. |
| 522 | 501 |
~NoTimeReport() {}
|
| 523 | 502 |
|
| 524 | 503 |
operator TimeStamp () const { return TimeStamp(); }
|
| 525 | 504 |
void reset() {}
|
| 526 | 505 |
void start() {}
|
| 527 | 506 |
void stop() {}
|
| 528 | 507 |
void halt() {}
|
| 529 | 508 |
int running() { return 0; }
|
| 530 | 509 |
void restart() {}
|
| 531 | 510 |
double userTime() const { return 0; }
|
| 532 | 511 |
double systemTime() const { return 0; }
|
| 533 | 512 |
double cUserTime() const { return 0; }
|
| 534 | 513 |
double cSystemTime() const { return 0; }
|
| 535 | 514 |
double realTime() const { return 0; }
|
| 536 | 515 |
}; |
| 537 | 516 |
|
| 538 | 517 |
///Tool to measure the running time more exactly. |
| 539 | 518 |
|
| 540 | 519 |
///This function calls \c f several times and returns the average |
| 541 | 520 |
///running time. The number of the executions will be choosen in such a way |
| 542 | 521 |
///that the full real running time will be roughly between \c min_time |
| 543 | 522 |
///and <tt>2*min_time</tt>. |
| 544 | 523 |
///\param f the function object to be measured. |
| 545 | 524 |
///\param min_time the minimum total running time. |
| 546 | 525 |
///\retval num if it is not \c NULL, then the actual |
| 547 | 526 |
/// number of execution of \c f will be written into <tt>*num</tt>. |
| 548 | 527 |
///\retval full_time if it is not \c NULL, then the actual |
| 549 | 528 |
/// total running time will be written into <tt>*full_time</tt>. |
| 550 | 529 |
///\return The average running time of \c f. |
| 551 | 530 |
|
| 552 | 531 |
template<class F> |
| 553 | 532 |
TimeStamp runningTimeTest(F f,double min_time=10,unsigned int *num = NULL, |
| 554 | 533 |
TimeStamp *full_time=NULL) |
| 555 | 534 |
{
|
| 556 | 535 |
TimeStamp full; |
| 557 | 536 |
unsigned int total=0; |
| 558 | 537 |
Timer t; |
| 559 | 538 |
for(unsigned int tn=1;tn <= 1U<<31 && full.realTime()<=min_time; tn*=2) {
|
| 560 | 539 |
for(;total<tn;total++) f(); |
| 561 | 540 |
full=t; |
| 562 | 541 |
} |
| 563 | 542 |
if(num) *num=total; |
| 564 | 543 |
if(full_time) *full_time=full; |
| 565 | 544 |
return full/total; |
| 566 | 545 |
} |
| 567 | 546 |
|
| 568 | 547 |
/// @} |
| 569 | 548 |
|
| 570 | 549 |
|
| 571 | 550 |
} //namespace lemon |
| 572 | 551 |
|
| 573 | 552 |
#endif //LEMON_TIME_MEASURE_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_TOLERANCE_H |
| 20 | 20 |
#define LEMON_TOLERANCE_H |
| 21 | 21 |
|
| 22 | 22 |
///\ingroup misc |
| 23 | 23 |
///\file |
| 24 | 24 |
///\brief A basic tool to handle the anomalies of calculation with |
| 25 | 25 |
///floating point numbers. |
| 26 | 26 |
/// |
| 27 | 27 |
|
| 28 | 28 |
namespace lemon {
|
| 29 | 29 |
|
| 30 | 30 |
/// \addtogroup misc |
| 31 | 31 |
/// @{
|
| 32 | 32 |
|
| 33 | 33 |
///\brief A class to provide a basic way to |
| 34 | 34 |
///handle the comparison of numbers that are obtained |
| 35 | 35 |
///as a result of a probably inexact computation. |
| 36 | 36 |
/// |
| 37 | 37 |
///\ref Tolerance is a class to provide a basic way to |
| 38 | 38 |
///handle the comparison of numbers that are obtained |
| 39 | 39 |
///as a result of a probably inexact computation. |
| 40 | 40 |
/// |
| 41 |
///This is an abstract class, it should be specialized for all |
|
| 42 |
///numerical data types. These specialized classes like |
|
| 41 |
///The general implementation is suitable only if the data type is exact, |
|
| 42 |
///like the integer types, otherwise a specialized version must be |
|
| 43 |
///implemented. These specialized classes like |
|
| 43 | 44 |
///Tolerance<double> may offer additional tuning parameters. |
| 44 | 45 |
/// |
| 45 | 46 |
///\sa Tolerance<float> |
| 46 | 47 |
///\sa Tolerance<double> |
| 47 | 48 |
///\sa Tolerance<long double> |
| 48 |
///\sa Tolerance<int> |
|
| 49 |
///\sa Tolerance<long long int> |
|
| 50 |
///\sa Tolerance<unsigned int> |
|
| 51 |
///\sa Tolerance<unsigned long long int> |
|
| 52 | 49 |
|
| 53 | 50 |
template<class T> |
| 54 | 51 |
class Tolerance |
| 55 | 52 |
{
|
| 56 | 53 |
public: |
| 57 | 54 |
typedef T Value; |
| 58 | 55 |
|
| 59 | 56 |
///\name Comparisons |
| 60 | 57 |
///The concept is that these bool functions return \c true only if |
| 61 | 58 |
///the related comparisons hold even if some numerical error appeared |
| 62 | 59 |
///during the computations. |
| 63 | 60 |
|
| 64 | 61 |
///@{
|
| 65 | 62 |
|
| 66 | 63 |
///Returns \c true if \c a is \e surely strictly less than \c b |
| 67 |
static bool less(Value a,Value b) {return
|
|
| 64 |
static bool less(Value a,Value b) {return a<b;}
|
|
| 68 | 65 |
///Returns \c true if \c a is \e surely different from \c b |
| 69 |
static bool different(Value a,Value b) {return
|
|
| 66 |
static bool different(Value a,Value b) {return a!=b;}
|
|
| 70 | 67 |
///Returns \c true if \c a is \e surely positive |
| 71 |
static bool positive(Value a) {return
|
|
| 68 |
static bool positive(Value a) {return static_cast<Value>(0) < a;}
|
|
| 72 | 69 |
///Returns \c true if \c a is \e surely negative |
| 73 |
static bool negative(Value a) {return
|
|
| 70 |
static bool negative(Value a) {return a < static_cast<Value>(0);}
|
|
| 74 | 71 |
///Returns \c true if \c a is \e surely non-zero |
| 75 |
static bool nonZero(Value a) {return
|
|
| 72 |
static bool nonZero(Value a) {return a != static_cast<Value>(0);}
|
|
| 76 | 73 |
|
| 77 | 74 |
///@} |
| 78 | 75 |
|
| 79 | 76 |
///Returns the zero value. |
| 80 |
static Value zero() {return
|
|
| 77 |
static Value zero() {return static_cast<Value>(0);}
|
|
| 81 | 78 |
|
| 82 | 79 |
// static bool finite(Value a) {}
|
| 83 | 80 |
// static Value big() {}
|
| 84 | 81 |
// static Value negativeBig() {}
|
| 85 | 82 |
}; |
| 86 | 83 |
|
| 87 | 84 |
|
| 88 | 85 |
///Float specialization of Tolerance. |
| 89 | 86 |
|
| 90 | 87 |
///Float specialization of Tolerance. |
| 91 | 88 |
///\sa Tolerance |
| 92 | 89 |
///\relates Tolerance |
| 93 | 90 |
template<> |
| 94 | 91 |
class Tolerance<float> |
| 95 | 92 |
{
|
| 96 | 93 |
static float def_epsilon; |
| 97 | 94 |
float _epsilon; |
| 98 | 95 |
public: |
| 99 | 96 |
///\e |
| 100 | 97 |
typedef float Value; |
| 101 | 98 |
|
| 102 | 99 |
///Constructor setting the epsilon tolerance to the default value. |
| 103 | 100 |
Tolerance() : _epsilon(def_epsilon) {}
|
| 104 | 101 |
///Constructor setting the epsilon tolerance to the given value. |
| 105 | 102 |
Tolerance(float e) : _epsilon(e) {}
|
| 106 | 103 |
|
| 107 | 104 |
///Returns the epsilon value. |
| 108 | 105 |
Value epsilon() const {return _epsilon;}
|
| 109 | 106 |
///Sets the epsilon value. |
| 110 | 107 |
void epsilon(Value e) {_epsilon=e;}
|
| 111 | 108 |
|
| 112 | 109 |
///Returns the default epsilon value. |
| 113 | 110 |
static Value defaultEpsilon() {return def_epsilon;}
|
| 114 | 111 |
///Sets the default epsilon value. |
| 115 | 112 |
static void defaultEpsilon(Value e) {def_epsilon=e;}
|
| 116 | 113 |
|
| 117 | 114 |
///\name Comparisons |
| 118 | 115 |
///See \ref lemon::Tolerance "Tolerance" for more details. |
| 119 | 116 |
|
| 120 | 117 |
///@{
|
| 121 | 118 |
|
| 122 | 119 |
///Returns \c true if \c a is \e surely strictly less than \c b |
| 123 | 120 |
bool less(Value a,Value b) const {return a+_epsilon<b;}
|
| 124 | 121 |
///Returns \c true if \c a is \e surely different from \c b |
| 125 | 122 |
bool different(Value a,Value b) const { return less(a,b)||less(b,a); }
|
| 126 | 123 |
///Returns \c true if \c a is \e surely positive |
| 127 | 124 |
bool positive(Value a) const { return _epsilon<a; }
|
| 128 | 125 |
///Returns \c true if \c a is \e surely negative |
| 129 | 126 |
bool negative(Value a) const { return -_epsilon>a; }
|
| 130 | 127 |
///Returns \c true if \c a is \e surely non-zero |
| 131 | 128 |
bool nonZero(Value a) const { return positive(a)||negative(a); }
|
| 132 | 129 |
|
| 133 | 130 |
///@} |
| 134 | 131 |
|
| 135 | 132 |
///Returns zero |
| 136 | 133 |
static Value zero() {return 0;}
|
| 137 | 134 |
}; |
| 138 | 135 |
|
| 139 | 136 |
///Double specialization of Tolerance. |
| 140 | 137 |
|
| 141 | 138 |
///Double specialization of Tolerance. |
| 142 | 139 |
///\sa Tolerance |
| 143 | 140 |
///\relates Tolerance |
| 144 | 141 |
template<> |
| 145 | 142 |
class Tolerance<double> |
| 146 | 143 |
{
|
| 147 | 144 |
static double def_epsilon; |
| 148 | 145 |
double _epsilon; |
| 149 | 146 |
public: |
| 150 | 147 |
///\e |
| 151 | 148 |
typedef double Value; |
| 152 | 149 |
|
| 153 | 150 |
///Constructor setting the epsilon tolerance to the default value. |
| 154 | 151 |
Tolerance() : _epsilon(def_epsilon) {}
|
| 155 | 152 |
///Constructor setting the epsilon tolerance to the given value. |
| 156 | 153 |
Tolerance(double e) : _epsilon(e) {}
|
| 157 | 154 |
|
| 158 | 155 |
///Returns the epsilon value. |
| 159 | 156 |
Value epsilon() const {return _epsilon;}
|
| 160 | 157 |
///Sets the epsilon value. |
| 161 | 158 |
void epsilon(Value e) {_epsilon=e;}
|
| 162 | 159 |
|
| 163 | 160 |
///Returns the default epsilon value. |
| 164 | 161 |
static Value defaultEpsilon() {return def_epsilon;}
|
| 165 | 162 |
///Sets the default epsilon value. |
| 166 | 163 |
static void defaultEpsilon(Value e) {def_epsilon=e;}
|
| 167 | 164 |
|
| 168 | 165 |
///\name Comparisons |
| 169 | 166 |
///See \ref lemon::Tolerance "Tolerance" for more details. |
| 170 | 167 |
|
| 171 | 168 |
///@{
|
| 172 | 169 |
|
| 173 | 170 |
///Returns \c true if \c a is \e surely strictly less than \c b |
| 174 | 171 |
bool less(Value a,Value b) const {return a+_epsilon<b;}
|
| 175 | 172 |
///Returns \c true if \c a is \e surely different from \c b |
| 176 | 173 |
bool different(Value a,Value b) const { return less(a,b)||less(b,a); }
|
| 177 | 174 |
///Returns \c true if \c a is \e surely positive |
| 178 | 175 |
bool positive(Value a) const { return _epsilon<a; }
|
| 179 | 176 |
///Returns \c true if \c a is \e surely negative |
| 180 | 177 |
bool negative(Value a) const { return -_epsilon>a; }
|
| 181 | 178 |
///Returns \c true if \c a is \e surely non-zero |
| 182 | 179 |
bool nonZero(Value a) const { return positive(a)||negative(a); }
|
| 183 | 180 |
|
| 184 | 181 |
///@} |
| 185 | 182 |
|
| 186 | 183 |
///Returns zero |
| 187 | 184 |
static Value zero() {return 0;}
|
| 188 | 185 |
}; |
| 189 | 186 |
|
| 190 | 187 |
///Long double specialization of Tolerance. |
| 191 | 188 |
|
| 192 | 189 |
///Long double specialization of Tolerance. |
| 193 | 190 |
///\sa Tolerance |
| 194 | 191 |
///\relates Tolerance |
| 195 | 192 |
template<> |
| 196 | 193 |
class Tolerance<long double> |
| 197 | 194 |
{
|
| 198 | 195 |
static long double def_epsilon; |
| 199 | 196 |
long double _epsilon; |
| 200 | 197 |
public: |
| 201 | 198 |
///\e |
| 202 | 199 |
typedef long double Value; |
| 203 | 200 |
|
| 204 | 201 |
///Constructor setting the epsilon tolerance to the default value. |
| 205 | 202 |
Tolerance() : _epsilon(def_epsilon) {}
|
| 206 | 203 |
///Constructor setting the epsilon tolerance to the given value. |
| 207 | 204 |
Tolerance(long double e) : _epsilon(e) {}
|
| 208 | 205 |
|
| 209 | 206 |
///Returns the epsilon value. |
| 210 | 207 |
Value epsilon() const {return _epsilon;}
|
| 211 | 208 |
///Sets the epsilon value. |
| 212 | 209 |
void epsilon(Value e) {_epsilon=e;}
|
| 213 | 210 |
|
| 214 | 211 |
///Returns the default epsilon value. |
| 215 | 212 |
static Value defaultEpsilon() {return def_epsilon;}
|
| 216 | 213 |
///Sets the default epsilon value. |
| 217 | 214 |
static void defaultEpsilon(Value e) {def_epsilon=e;}
|
| 218 | 215 |
|
| 219 | 216 |
///\name Comparisons |
| 220 | 217 |
///See \ref lemon::Tolerance "Tolerance" for more details. |
| 221 | 218 |
|
| 222 | 219 |
///@{
|
| 223 | 220 |
|
| 224 | 221 |
///Returns \c true if \c a is \e surely strictly less than \c b |
| 225 | 222 |
bool less(Value a,Value b) const {return a+_epsilon<b;}
|
| 226 | 223 |
///Returns \c true if \c a is \e surely different from \c b |
| 227 | 224 |
bool different(Value a,Value b) const { return less(a,b)||less(b,a); }
|
| 228 | 225 |
///Returns \c true if \c a is \e surely positive |
| 229 | 226 |
bool positive(Value a) const { return _epsilon<a; }
|
| 230 | 227 |
///Returns \c true if \c a is \e surely negative |
| 231 | 228 |
bool negative(Value a) const { return -_epsilon>a; }
|
| 232 | 229 |
///Returns \c true if \c a is \e surely non-zero |
| 233 | 230 |
bool nonZero(Value a) const { return positive(a)||negative(a); }
|
| 234 | 231 |
|
| 235 | 232 |
///@} |
| 236 | 233 |
|
| 237 | 234 |
///Returns zero |
| 238 | 235 |
static Value zero() {return 0;}
|
| 239 | 236 |
}; |
| 240 | 237 |
|
| 241 |
///Integer specialization of Tolerance. |
|
| 242 |
|
|
| 243 |
///Integer specialization of Tolerance. |
|
| 244 |
///\sa Tolerance |
|
| 245 |
template<> |
|
| 246 |
class Tolerance<int> |
|
| 247 |
{
|
|
| 248 |
public: |
|
| 249 |
///\e |
|
| 250 |
typedef int Value; |
|
| 251 |
|
|
| 252 |
///\name Comparisons |
|
| 253 |
///See \ref lemon::Tolerance "Tolerance" for more details. |
|
| 254 |
|
|
| 255 |
///@{
|
|
| 256 |
|
|
| 257 |
///Returns \c true if \c a is \e surely strictly less than \c b |
|
| 258 |
static bool less(Value a,Value b) { return a<b;}
|
|
| 259 |
///Returns \c true if \c a is \e surely different from \c b |
|
| 260 |
static bool different(Value a,Value b) { return a!=b; }
|
|
| 261 |
///Returns \c true if \c a is \e surely positive |
|
| 262 |
static bool positive(Value a) { return 0<a; }
|
|
| 263 |
///Returns \c true if \c a is \e surely negative |
|
| 264 |
static bool negative(Value a) { return 0>a; }
|
|
| 265 |
///Returns \c true if \c a is \e surely non-zero |
|
| 266 |
static bool nonZero(Value a) { return a!=0; }
|
|
| 267 |
|
|
| 268 |
///@} |
|
| 269 |
|
|
| 270 |
///Returns zero |
|
| 271 |
static Value zero() {return 0;}
|
|
| 272 |
}; |
|
| 273 |
|
|
| 274 |
///Unsigned integer specialization of Tolerance. |
|
| 275 |
|
|
| 276 |
///Unsigned integer specialization of Tolerance. |
|
| 277 |
///\sa Tolerance |
|
| 278 |
template<> |
|
| 279 |
class Tolerance<unsigned int> |
|
| 280 |
{
|
|
| 281 |
public: |
|
| 282 |
///\e |
|
| 283 |
typedef unsigned int Value; |
|
| 284 |
|
|
| 285 |
///\name Comparisons |
|
| 286 |
///See \ref lemon::Tolerance "Tolerance" for more details. |
|
| 287 |
|
|
| 288 |
///@{
|
|
| 289 |
|
|
| 290 |
///Returns \c true if \c a is \e surely strictly less than \c b |
|
| 291 |
static bool less(Value a,Value b) { return a<b;}
|
|
| 292 |
///Returns \c true if \c a is \e surely different from \c b |
|
| 293 |
static bool different(Value a,Value b) { return a!=b; }
|
|
| 294 |
///Returns \c true if \c a is \e surely positive |
|
| 295 |
static bool positive(Value a) { return 0<a; }
|
|
| 296 |
///Returns \c true if \c a is \e surely negative |
|
| 297 |
static bool negative(Value) { return false; }
|
|
| 298 |
///Returns \c true if \c a is \e surely non-zero |
|
| 299 |
static bool nonZero(Value a) { return a!=0; }
|
|
| 300 |
|
|
| 301 |
///@} |
|
| 302 |
|
|
| 303 |
///Returns zero |
|
| 304 |
static Value zero() {return 0;}
|
|
| 305 |
}; |
|
| 306 |
|
|
| 307 |
|
|
| 308 |
///Long integer specialization of Tolerance. |
|
| 309 |
|
|
| 310 |
///Long integer specialization of Tolerance. |
|
| 311 |
///\sa Tolerance |
|
| 312 |
template<> |
|
| 313 |
class Tolerance<long int> |
|
| 314 |
{
|
|
| 315 |
public: |
|
| 316 |
///\e |
|
| 317 |
typedef long int Value; |
|
| 318 |
|
|
| 319 |
///\name Comparisons |
|
| 320 |
///See \ref lemon::Tolerance "Tolerance" for more details. |
|
| 321 |
|
|
| 322 |
///@{
|
|
| 323 |
|
|
| 324 |
///Returns \c true if \c a is \e surely strictly less than \c b |
|
| 325 |
static bool less(Value a,Value b) { return a<b;}
|
|
| 326 |
///Returns \c true if \c a is \e surely different from \c b |
|
| 327 |
static bool different(Value a,Value b) { return a!=b; }
|
|
| 328 |
///Returns \c true if \c a is \e surely positive |
|
| 329 |
static bool positive(Value a) { return 0<a; }
|
|
| 330 |
///Returns \c true if \c a is \e surely negative |
|
| 331 |
static bool negative(Value a) { return 0>a; }
|
|
| 332 |
///Returns \c true if \c a is \e surely non-zero |
|
| 333 |
static bool nonZero(Value a) { return a!=0;}
|
|
| 334 |
|
|
| 335 |
///@} |
|
| 336 |
|
|
| 337 |
///Returns zero |
|
| 338 |
static Value zero() {return 0;}
|
|
| 339 |
}; |
|
| 340 |
|
|
| 341 |
///Unsigned long integer specialization of Tolerance. |
|
| 342 |
|
|
| 343 |
///Unsigned long integer specialization of Tolerance. |
|
| 344 |
///\sa Tolerance |
|
| 345 |
template<> |
|
| 346 |
class Tolerance<unsigned long int> |
|
| 347 |
{
|
|
| 348 |
public: |
|
| 349 |
///\e |
|
| 350 |
typedef unsigned long int Value; |
|
| 351 |
|
|
| 352 |
///\name Comparisons |
|
| 353 |
///See \ref lemon::Tolerance "Tolerance" for more details. |
|
| 354 |
|
|
| 355 |
///@{
|
|
| 356 |
|
|
| 357 |
///Returns \c true if \c a is \e surely strictly less than \c b |
|
| 358 |
static bool less(Value a,Value b) { return a<b;}
|
|
| 359 |
///Returns \c true if \c a is \e surely different from \c b |
|
| 360 |
static bool different(Value a,Value b) { return a!=b; }
|
|
| 361 |
///Returns \c true if \c a is \e surely positive |
|
| 362 |
static bool positive(Value a) { return 0<a; }
|
|
| 363 |
///Returns \c true if \c a is \e surely negative |
|
| 364 |
static bool negative(Value) { return false; }
|
|
| 365 |
///Returns \c true if \c a is \e surely non-zero |
|
| 366 |
static bool nonZero(Value a) { return a!=0;}
|
|
| 367 |
|
|
| 368 |
///@} |
|
| 369 |
|
|
| 370 |
///Returns zero |
|
| 371 |
static Value zero() {return 0;}
|
|
| 372 |
}; |
|
| 373 |
|
|
| 374 |
#if defined __GNUC__ && !defined __STRICT_ANSI__ |
|
| 375 |
|
|
| 376 |
///Long long integer specialization of Tolerance. |
|
| 377 |
|
|
| 378 |
///Long long integer specialization of Tolerance. |
|
| 379 |
///\warning This class (more exactly, type <tt>long long</tt>) |
|
| 380 |
///is not ansi compatible. |
|
| 381 |
///\sa Tolerance |
|
| 382 |
template<> |
|
| 383 |
class Tolerance<long long int> |
|
| 384 |
{
|
|
| 385 |
public: |
|
| 386 |
///\e |
|
| 387 |
typedef long long int Value; |
|
| 388 |
|
|
| 389 |
///\name Comparisons |
|
| 390 |
///See \ref lemon::Tolerance "Tolerance" for more details. |
|
| 391 |
|
|
| 392 |
///@{
|
|
| 393 |
|
|
| 394 |
///Returns \c true if \c a is \e surely strictly less than \c b |
|
| 395 |
static bool less(Value a,Value b) { return a<b;}
|
|
| 396 |
///Returns \c true if \c a is \e surely different from \c b |
|
| 397 |
static bool different(Value a,Value b) { return a!=b; }
|
|
| 398 |
///Returns \c true if \c a is \e surely positive |
|
| 399 |
static bool positive(Value a) { return 0<a; }
|
|
| 400 |
///Returns \c true if \c a is \e surely negative |
|
| 401 |
static bool negative(Value a) { return 0>a; }
|
|
| 402 |
///Returns \c true if \c a is \e surely non-zero |
|
| 403 |
static bool nonZero(Value a) { return a!=0;}
|
|
| 404 |
|
|
| 405 |
///@} |
|
| 406 |
|
|
| 407 |
///Returns zero |
|
| 408 |
static Value zero() {return 0;}
|
|
| 409 |
}; |
|
| 410 |
|
|
| 411 |
///Unsigned long long integer specialization of Tolerance. |
|
| 412 |
|
|
| 413 |
///Unsigned long long integer specialization of Tolerance. |
|
| 414 |
///\warning This class (more exactly, type <tt>unsigned long long</tt>) |
|
| 415 |
///is not ansi compatible. |
|
| 416 |
///\sa Tolerance |
|
| 417 |
template<> |
|
| 418 |
class Tolerance<unsigned long long int> |
|
| 419 |
{
|
|
| 420 |
public: |
|
| 421 |
///\e |
|
| 422 |
typedef unsigned long long int Value; |
|
| 423 |
|
|
| 424 |
///\name Comparisons |
|
| 425 |
///See \ref lemon::Tolerance "Tolerance" for more details. |
|
| 426 |
|
|
| 427 |
///@{
|
|
| 428 |
|
|
| 429 |
///Returns \c true if \c a is \e surely strictly less than \c b |
|
| 430 |
static bool less(Value a,Value b) { return a<b;}
|
|
| 431 |
///Returns \c true if \c a is \e surely different from \c b |
|
| 432 |
static bool different(Value a,Value b) { return a!=b; }
|
|
| 433 |
///Returns \c true if \c a is \e surely positive |
|
| 434 |
static bool positive(Value a) { return 0<a; }
|
|
| 435 |
///Returns \c true if \c a is \e surely negative |
|
| 436 |
static bool negative(Value) { return false; }
|
|
| 437 |
///Returns \c true if \c a is \e surely non-zero |
|
| 438 |
static bool nonZero(Value a) { return a!=0;}
|
|
| 439 |
|
|
| 440 |
///@} |
|
| 441 |
|
|
| 442 |
///Returns zero |
|
| 443 |
static Value zero() {return 0;}
|
|
| 444 |
}; |
|
| 445 |
|
|
| 446 |
#endif |
|
| 447 |
|
|
| 448 | 238 |
/// @} |
| 449 | 239 |
|
| 450 | 240 |
} //namespace lemon |
| 451 | 241 |
|
| 452 | 242 |
#endif //LEMON_TOLERANCE_H |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_UNION_FIND_H |
| 20 | 20 |
#define LEMON_UNION_FIND_H |
| 21 | 21 |
|
| 22 | 22 |
//!\ingroup auxdat |
| 23 | 23 |
//!\file |
| 24 | 24 |
//!\brief Union-Find data structures. |
| 25 | 25 |
//! |
| 26 | 26 |
|
| 27 | 27 |
#include <vector> |
| 28 | 28 |
#include <list> |
| 29 | 29 |
#include <utility> |
| 30 | 30 |
#include <algorithm> |
| 31 | 31 |
#include <functional> |
| 32 | 32 |
|
| 33 | 33 |
#include <lemon/core.h> |
| 34 | 34 |
|
| 35 | 35 |
namespace lemon {
|
| 36 | 36 |
|
| 37 | 37 |
/// \ingroup auxdat |
| 38 | 38 |
/// |
| 39 | 39 |
/// \brief A \e Union-Find data structure implementation |
| 40 | 40 |
/// |
| 41 | 41 |
/// The class implements the \e Union-Find data structure. |
| 42 | 42 |
/// The union operation uses rank heuristic, while |
| 43 | 43 |
/// the find operation uses path compression. |
| 44 | 44 |
/// This is a very simple but efficient implementation, providing |
| 45 | 45 |
/// only four methods: join (union), find, insert and size. |
| 46 | 46 |
/// For more features see the \ref UnionFindEnum class. |
| 47 | 47 |
/// |
| 48 | 48 |
/// It is primarily used in Kruskal algorithm for finding minimal |
| 49 | 49 |
/// cost spanning tree in a graph. |
| 50 | 50 |
/// \sa kruskal() |
| 51 | 51 |
/// |
| 52 | 52 |
/// \pre You need to add all the elements by the \ref insert() |
| 53 | 53 |
/// method. |
| 54 |
template <typename |
|
| 54 |
template <typename IM> |
|
| 55 | 55 |
class UnionFind {
|
| 56 | 56 |
public: |
| 57 | 57 |
|
| 58 |
|
|
| 58 |
///\e |
|
| 59 |
typedef IM ItemIntMap; |
|
| 60 |
///\e |
|
| 59 | 61 |
typedef typename ItemIntMap::Key Item; |
| 60 | 62 |
|
| 61 | 63 |
private: |
| 62 | 64 |
// If the items vector stores negative value for an item then |
| 63 | 65 |
// that item is root item and it has -items[it] component size. |
| 64 | 66 |
// Else the items[it] contains the index of the parent. |
| 65 | 67 |
std::vector<int> items; |
| 66 | 68 |
ItemIntMap& index; |
| 67 | 69 |
|
| 68 | 70 |
bool rep(int idx) const {
|
| 69 | 71 |
return items[idx] < 0; |
| 70 | 72 |
} |
| 71 | 73 |
|
| 72 | 74 |
int repIndex(int idx) const {
|
| 73 | 75 |
int k = idx; |
| 74 | 76 |
while (!rep(k)) {
|
| 75 | 77 |
k = items[k] ; |
| 76 | 78 |
} |
| 77 | 79 |
while (idx != k) {
|
| 78 | 80 |
int next = items[idx]; |
| 79 | 81 |
const_cast<int&>(items[idx]) = k; |
| 80 | 82 |
idx = next; |
| 81 | 83 |
} |
| 82 | 84 |
return k; |
| 83 | 85 |
} |
| 84 | 86 |
|
| 85 | 87 |
public: |
| 86 | 88 |
|
| 87 | 89 |
/// \brief Constructor |
| 88 | 90 |
/// |
| 89 | 91 |
/// Constructor of the UnionFind class. You should give an item to |
| 90 | 92 |
/// integer map which will be used from the data structure. If you |
| 91 | 93 |
/// modify directly this map that may cause segmentation fault, |
| 92 | 94 |
/// invalid data structure, or infinite loop when you use again |
| 93 | 95 |
/// the union-find. |
| 94 | 96 |
UnionFind(ItemIntMap& m) : index(m) {}
|
| 95 | 97 |
|
| 96 | 98 |
/// \brief Returns the index of the element's component. |
| 97 | 99 |
/// |
| 98 | 100 |
/// The method returns the index of the element's component. |
| 99 | 101 |
/// This is an integer between zero and the number of inserted elements. |
| 100 | 102 |
/// |
| 101 | 103 |
int find(const Item& a) {
|
| 102 | 104 |
return repIndex(index[a]); |
| 103 | 105 |
} |
| 104 | 106 |
|
| 105 | 107 |
/// \brief Clears the union-find data structure |
| 106 | 108 |
/// |
| 107 | 109 |
/// Erase each item from the data structure. |
| 108 | 110 |
void clear() {
|
| 109 | 111 |
items.clear(); |
| 110 | 112 |
} |
| 111 | 113 |
|
| 112 | 114 |
/// \brief Inserts a new element into the structure. |
| 113 | 115 |
/// |
| 114 | 116 |
/// This method inserts a new element into the data structure. |
| 115 | 117 |
/// |
| 116 | 118 |
/// The method returns the index of the new component. |
| 117 | 119 |
int insert(const Item& a) {
|
| 118 | 120 |
int n = items.size(); |
| 119 | 121 |
items.push_back(-1); |
| 120 | 122 |
index.set(a,n); |
| 121 | 123 |
return n; |
| 122 | 124 |
} |
| 123 | 125 |
|
| 124 | 126 |
/// \brief Joining the components of element \e a and element \e b. |
| 125 | 127 |
/// |
| 126 | 128 |
/// This is the \e union operation of the Union-Find structure. |
| 127 | 129 |
/// Joins the component of element \e a and component of |
| 128 | 130 |
/// element \e b. If \e a and \e b are in the same component then |
| 129 | 131 |
/// it returns false otherwise it returns true. |
| 130 | 132 |
bool join(const Item& a, const Item& b) {
|
| 131 | 133 |
int ka = repIndex(index[a]); |
| 132 | 134 |
int kb = repIndex(index[b]); |
| 133 | 135 |
|
| 134 | 136 |
if ( ka == kb ) |
| 135 | 137 |
return false; |
| 136 | 138 |
|
| 137 | 139 |
if (items[ka] < items[kb]) {
|
| 138 | 140 |
items[ka] += items[kb]; |
| 139 | 141 |
items[kb] = ka; |
| 140 | 142 |
} else {
|
| 141 | 143 |
items[kb] += items[ka]; |
| 142 | 144 |
items[ka] = kb; |
| 143 | 145 |
} |
| 144 | 146 |
return true; |
| 145 | 147 |
} |
| 146 | 148 |
|
| 147 | 149 |
/// \brief Returns the size of the component of element \e a. |
| 148 | 150 |
/// |
| 149 | 151 |
/// Returns the size of the component of element \e a. |
| 150 | 152 |
int size(const Item& a) {
|
| 151 | 153 |
int k = repIndex(index[a]); |
| 152 | 154 |
return - items[k]; |
| 153 | 155 |
} |
| 154 | 156 |
|
| 155 | 157 |
}; |
| 156 | 158 |
|
| 157 | 159 |
/// \ingroup auxdat |
| 158 | 160 |
/// |
| 159 | 161 |
/// \brief A \e Union-Find data structure implementation which |
| 160 | 162 |
/// is able to enumerate the components. |
| 161 | 163 |
/// |
| 162 | 164 |
/// The class implements a \e Union-Find data structure |
| 163 | 165 |
/// which is able to enumerate the components and the items in |
| 164 | 166 |
/// a component. If you don't need this feature then perhaps it's |
| 165 | 167 |
/// better to use the \ref UnionFind class which is more efficient. |
| 166 | 168 |
/// |
| 167 | 169 |
/// The union operation uses rank heuristic, while |
| 168 | 170 |
/// the find operation uses path compression. |
| 169 | 171 |
/// |
| 170 | 172 |
/// \pre You need to add all the elements by the \ref insert() |
| 171 | 173 |
/// method. |
| 172 | 174 |
/// |
| 173 |
template <typename |
|
| 175 |
template <typename IM> |
|
| 174 | 176 |
class UnionFindEnum {
|
| 175 | 177 |
public: |
| 176 | 178 |
|
| 177 |
|
|
| 179 |
///\e |
|
| 180 |
typedef IM ItemIntMap; |
|
| 181 |
///\e |
|
| 178 | 182 |
typedef typename ItemIntMap::Key Item; |
| 179 | 183 |
|
| 180 | 184 |
private: |
| 181 | 185 |
|
| 182 | 186 |
ItemIntMap& index; |
| 183 | 187 |
|
| 184 | 188 |
// If the parent stores negative value for an item then that item |
| 185 | 189 |
// is root item and it has ~(items[it].parent) component id. Else |
| 186 | 190 |
// the items[it].parent contains the index of the parent. |
| 187 | 191 |
// |
| 188 | 192 |
// The \c next and \c prev provides the double-linked |
| 189 | 193 |
// cyclic list of one component's items. |
| 190 | 194 |
struct ItemT {
|
| 191 | 195 |
int parent; |
| 192 | 196 |
Item item; |
| 193 | 197 |
|
| 194 | 198 |
int next, prev; |
| 195 | 199 |
}; |
| 196 | 200 |
|
| 197 | 201 |
std::vector<ItemT> items; |
| 198 | 202 |
int firstFreeItem; |
| 199 | 203 |
|
| 200 | 204 |
struct ClassT {
|
| 201 | 205 |
int size; |
| 202 | 206 |
int firstItem; |
| 203 | 207 |
int next, prev; |
| 204 | 208 |
}; |
| 205 | 209 |
|
| 206 | 210 |
std::vector<ClassT> classes; |
| 207 | 211 |
int firstClass, firstFreeClass; |
| 208 | 212 |
|
| 209 | 213 |
int newClass() {
|
| 210 | 214 |
if (firstFreeClass == -1) {
|
| 211 | 215 |
int cdx = classes.size(); |
| 212 | 216 |
classes.push_back(ClassT()); |
| 213 | 217 |
return cdx; |
| 214 | 218 |
} else {
|
| 215 | 219 |
int cdx = firstFreeClass; |
| 216 | 220 |
firstFreeClass = classes[firstFreeClass].next; |
| 217 | 221 |
return cdx; |
| 218 | 222 |
} |
| 219 | 223 |
} |
| 220 | 224 |
|
| 221 | 225 |
int newItem() {
|
| 222 | 226 |
if (firstFreeItem == -1) {
|
| 223 | 227 |
int idx = items.size(); |
| 224 | 228 |
items.push_back(ItemT()); |
| 225 | 229 |
return idx; |
| 226 | 230 |
} else {
|
| 227 | 231 |
int idx = firstFreeItem; |
| 228 | 232 |
firstFreeItem = items[firstFreeItem].next; |
| 229 | 233 |
return idx; |
| 230 | 234 |
} |
| 231 | 235 |
} |
| 232 | 236 |
|
| 233 | 237 |
|
| 234 | 238 |
bool rep(int idx) const {
|
| 235 | 239 |
return items[idx].parent < 0; |
| 236 | 240 |
} |
| 237 | 241 |
|
| 238 | 242 |
int repIndex(int idx) const {
|
| 239 | 243 |
int k = idx; |
| 240 | 244 |
while (!rep(k)) {
|
| 241 | 245 |
k = items[k].parent; |
| 242 | 246 |
} |
| 243 | 247 |
while (idx != k) {
|
| 244 | 248 |
int next = items[idx].parent; |
| 245 | 249 |
const_cast<int&>(items[idx].parent) = k; |
| 246 | 250 |
idx = next; |
| 247 | 251 |
} |
| 248 | 252 |
return k; |
| 249 | 253 |
} |
| 250 | 254 |
|
| 251 | 255 |
int classIndex(int idx) const {
|
| 252 | 256 |
return ~(items[repIndex(idx)].parent); |
| 253 | 257 |
} |
| 254 | 258 |
|
| 255 | 259 |
void singletonItem(int idx) {
|
| 256 | 260 |
items[idx].next = idx; |
| 257 | 261 |
items[idx].prev = idx; |
| 258 | 262 |
} |
| 259 | 263 |
|
| 260 | 264 |
void laceItem(int idx, int rdx) {
|
| 261 | 265 |
items[idx].prev = rdx; |
| 262 | 266 |
items[idx].next = items[rdx].next; |
| 263 | 267 |
items[items[rdx].next].prev = idx; |
| 264 | 268 |
items[rdx].next = idx; |
| 265 | 269 |
} |
| 266 | 270 |
|
| 267 | 271 |
void unlaceItem(int idx) {
|
| 268 | 272 |
items[items[idx].prev].next = items[idx].next; |
| 269 | 273 |
items[items[idx].next].prev = items[idx].prev; |
| 270 | 274 |
|
| 271 | 275 |
items[idx].next = firstFreeItem; |
| 272 | 276 |
firstFreeItem = idx; |
| 273 | 277 |
} |
| 274 | 278 |
|
| 275 | 279 |
void spliceItems(int ak, int bk) {
|
| 276 | 280 |
items[items[ak].prev].next = bk; |
| 277 | 281 |
items[items[bk].prev].next = ak; |
| 278 | 282 |
int tmp = items[ak].prev; |
| 279 | 283 |
items[ak].prev = items[bk].prev; |
| 280 | 284 |
items[bk].prev = tmp; |
| 281 | 285 |
|
| 282 | 286 |
} |
| 283 | 287 |
|
| 284 | 288 |
void laceClass(int cls) {
|
| 285 | 289 |
if (firstClass != -1) {
|
| 286 | 290 |
classes[firstClass].prev = cls; |
| 287 | 291 |
} |
| 288 | 292 |
classes[cls].next = firstClass; |
| 289 | 293 |
classes[cls].prev = -1; |
| 290 | 294 |
firstClass = cls; |
| 291 | 295 |
} |
| 292 | 296 |
|
| 293 | 297 |
void unlaceClass(int cls) {
|
| 294 | 298 |
if (classes[cls].prev != -1) {
|
| 295 | 299 |
classes[classes[cls].prev].next = classes[cls].next; |
| 296 | 300 |
} else {
|
| 297 | 301 |
firstClass = classes[cls].next; |
| 298 | 302 |
} |
| 299 | 303 |
if (classes[cls].next != -1) {
|
| 300 | 304 |
classes[classes[cls].next].prev = classes[cls].prev; |
| 301 | 305 |
} |
| 302 | 306 |
|
| 303 | 307 |
classes[cls].next = firstFreeClass; |
| 304 | 308 |
firstFreeClass = cls; |
| 305 | 309 |
} |
| 306 | 310 |
|
| 307 | 311 |
public: |
| 308 | 312 |
|
| 309 | 313 |
UnionFindEnum(ItemIntMap& _index) |
| 310 | 314 |
: index(_index), items(), firstFreeItem(-1), |
| 311 | 315 |
firstClass(-1), firstFreeClass(-1) {}
|
| 312 | 316 |
|
| 313 | 317 |
/// \brief Inserts the given element into a new component. |
| 314 | 318 |
/// |
| 315 | 319 |
/// This method creates a new component consisting only of the |
| 316 | 320 |
/// given element. |
| 317 | 321 |
/// |
| 318 | 322 |
int insert(const Item& item) {
|
| 319 | 323 |
int idx = newItem(); |
| 320 | 324 |
|
| 321 | 325 |
index.set(item, idx); |
| 322 | 326 |
|
| 323 | 327 |
singletonItem(idx); |
| 324 | 328 |
items[idx].item = item; |
| 325 | 329 |
|
| 326 | 330 |
int cdx = newClass(); |
| 327 | 331 |
|
| 328 | 332 |
items[idx].parent = ~cdx; |
| 329 | 333 |
|
| 330 | 334 |
laceClass(cdx); |
| 331 | 335 |
classes[cdx].size = 1; |
| 332 | 336 |
classes[cdx].firstItem = idx; |
| 333 | 337 |
|
| 334 | 338 |
firstClass = cdx; |
| 335 | 339 |
|
| 336 | 340 |
return cdx; |
| 337 | 341 |
} |
| 338 | 342 |
|
| 339 | 343 |
/// \brief Inserts the given element into the component of the others. |
| 340 | 344 |
/// |
| 341 | 345 |
/// This methods inserts the element \e a into the component of the |
| 342 | 346 |
/// element \e comp. |
| 343 | 347 |
void insert(const Item& item, int cls) {
|
| 344 | 348 |
int rdx = classes[cls].firstItem; |
| 345 | 349 |
int idx = newItem(); |
| 346 | 350 |
|
| 347 | 351 |
index.set(item, idx); |
| 348 | 352 |
|
| 349 | 353 |
laceItem(idx, rdx); |
| 350 | 354 |
|
| 351 | 355 |
items[idx].item = item; |
| 352 | 356 |
items[idx].parent = rdx; |
| 353 | 357 |
|
| 354 | 358 |
++classes[~(items[rdx].parent)].size; |
| 355 | 359 |
} |
| 356 | 360 |
|
| 357 | 361 |
/// \brief Clears the union-find data structure |
| 358 | 362 |
/// |
| 359 | 363 |
/// Erase each item from the data structure. |
| 360 | 364 |
void clear() {
|
| 361 | 365 |
items.clear(); |
| 362 | 366 |
firstClass = -1; |
| 363 | 367 |
firstFreeItem = -1; |
| 364 | 368 |
} |
| 365 | 369 |
|
| 366 | 370 |
/// \brief Finds the component of the given element. |
| 367 | 371 |
/// |
| 368 | 372 |
/// The method returns the component id of the given element. |
| 369 | 373 |
int find(const Item &item) const {
|
| 370 | 374 |
return ~(items[repIndex(index[item])].parent); |
| 371 | 375 |
} |
| 372 | 376 |
|
| 373 | 377 |
/// \brief Joining the component of element \e a and element \e b. |
| 374 | 378 |
/// |
| 375 | 379 |
/// This is the \e union operation of the Union-Find structure. |
| 376 | 380 |
/// Joins the component of element \e a and component of |
| 377 | 381 |
/// element \e b. If \e a and \e b are in the same component then |
| 378 | 382 |
/// returns -1 else returns the remaining class. |
| 379 | 383 |
int join(const Item& a, const Item& b) {
|
| 380 | 384 |
|
| 381 | 385 |
int ak = repIndex(index[a]); |
| 382 | 386 |
int bk = repIndex(index[b]); |
| 383 | 387 |
|
| 384 | 388 |
if (ak == bk) {
|
| 385 | 389 |
return -1; |
| 386 | 390 |
} |
| 387 | 391 |
|
| 388 | 392 |
int acx = ~(items[ak].parent); |
| 389 | 393 |
int bcx = ~(items[bk].parent); |
| 390 | 394 |
|
| 391 | 395 |
int rcx; |
| 392 | 396 |
|
| 393 | 397 |
if (classes[acx].size > classes[bcx].size) {
|
| 394 | 398 |
classes[acx].size += classes[bcx].size; |
| 395 | 399 |
items[bk].parent = ak; |
| 396 | 400 |
unlaceClass(bcx); |
| 397 | 401 |
rcx = acx; |
| 398 | 402 |
} else {
|
| 399 | 403 |
classes[bcx].size += classes[acx].size; |
| 400 | 404 |
items[ak].parent = bk; |
| 401 | 405 |
unlaceClass(acx); |
| 402 | 406 |
rcx = bcx; |
| 403 | 407 |
} |
| 404 | 408 |
spliceItems(ak, bk); |
| 405 | 409 |
|
| 406 | 410 |
return rcx; |
| 407 | 411 |
} |
| 408 | 412 |
|
| 409 | 413 |
/// \brief Returns the size of the class. |
| 410 | 414 |
/// |
| 411 | 415 |
/// Returns the size of the class. |
| 412 | 416 |
int size(int cls) const {
|
| 413 | 417 |
return classes[cls].size; |
| 414 | 418 |
} |
| 415 | 419 |
|
| 416 | 420 |
/// \brief Splits up the component. |
| 417 | 421 |
/// |
| 418 | 422 |
/// Splitting the component into singleton components (component |
| 419 | 423 |
/// of size one). |
| 420 | 424 |
void split(int cls) {
|
| 421 | 425 |
int fdx = classes[cls].firstItem; |
| 422 | 426 |
int idx = items[fdx].next; |
| 423 | 427 |
while (idx != fdx) {
|
| 424 | 428 |
int next = items[idx].next; |
| 425 | 429 |
|
| 426 | 430 |
singletonItem(idx); |
| 427 | 431 |
|
| 428 | 432 |
int cdx = newClass(); |
| 429 | 433 |
items[idx].parent = ~cdx; |
| 430 | 434 |
|
| 431 | 435 |
laceClass(cdx); |
| 432 | 436 |
classes[cdx].size = 1; |
| 433 | 437 |
classes[cdx].firstItem = idx; |
| 434 | 438 |
|
| 435 | 439 |
idx = next; |
| 436 | 440 |
} |
| 437 | 441 |
|
| 438 | 442 |
items[idx].prev = idx; |
| 439 | 443 |
items[idx].next = idx; |
| 440 | 444 |
|
| 441 | 445 |
classes[~(items[idx].parent)].size = 1; |
| 442 | 446 |
|
| 443 | 447 |
} |
| 444 | 448 |
|
| 445 | 449 |
/// \brief Removes the given element from the structure. |
| 446 | 450 |
/// |
| 447 | 451 |
/// Removes the element from its component and if the component becomes |
| 448 | 452 |
/// empty then removes that component from the component list. |
| 449 | 453 |
/// |
| 450 | 454 |
/// \warning It is an error to remove an element which is not in |
| 451 | 455 |
/// the structure. |
| 452 | 456 |
/// \warning This running time of this operation is proportional to the |
| 453 | 457 |
/// number of the items in this class. |
| 454 | 458 |
void erase(const Item& item) {
|
| 455 | 459 |
int idx = index[item]; |
| 456 | 460 |
int fdx = items[idx].next; |
| 457 | 461 |
|
| 458 | 462 |
int cdx = classIndex(idx); |
| 459 | 463 |
if (idx == fdx) {
|
| 460 | 464 |
unlaceClass(cdx); |
| 461 | 465 |
items[idx].next = firstFreeItem; |
| 462 | 466 |
firstFreeItem = idx; |
| 463 | 467 |
return; |
| 464 | 468 |
} else {
|
| 465 | 469 |
classes[cdx].firstItem = fdx; |
| 466 | 470 |
--classes[cdx].size; |
| 467 | 471 |
items[fdx].parent = ~cdx; |
| 468 | 472 |
|
| 469 | 473 |
unlaceItem(idx); |
| 470 | 474 |
idx = items[fdx].next; |
| 471 | 475 |
while (idx != fdx) {
|
| 472 | 476 |
items[idx].parent = fdx; |
| 473 | 477 |
idx = items[idx].next; |
| 474 | 478 |
} |
| 475 | 479 |
|
| 476 | 480 |
} |
| 477 | 481 |
|
| 478 | 482 |
} |
| 479 | 483 |
|
| 480 | 484 |
/// \brief Gives back a representant item of the component. |
| 481 | 485 |
/// |
| 482 | 486 |
/// Gives back a representant item of the component. |
| 483 | 487 |
Item item(int cls) const {
|
| 484 | 488 |
return items[classes[cls].firstItem].item; |
| 485 | 489 |
} |
| 486 | 490 |
|
| 487 | 491 |
/// \brief Removes the component of the given element from the structure. |
| 488 | 492 |
/// |
| 489 | 493 |
/// Removes the component of the given element from the structure. |
| 490 | 494 |
/// |
| 491 | 495 |
/// \warning It is an error to give an element which is not in the |
| 492 | 496 |
/// structure. |
| 493 | 497 |
void eraseClass(int cls) {
|
| 494 | 498 |
int fdx = classes[cls].firstItem; |
| 495 | 499 |
unlaceClass(cls); |
| 496 | 500 |
items[items[fdx].prev].next = firstFreeItem; |
| 497 | 501 |
firstFreeItem = fdx; |
| 498 | 502 |
} |
| 499 | 503 |
|
| 500 | 504 |
/// \brief LEMON style iterator for the representant items. |
| 501 | 505 |
/// |
| 502 | 506 |
/// ClassIt is a lemon style iterator for the components. It iterates |
| 503 | 507 |
/// on the ids of the classes. |
| 504 | 508 |
class ClassIt {
|
| 505 | 509 |
public: |
| 506 | 510 |
/// \brief Constructor of the iterator |
| 507 | 511 |
/// |
| 508 | 512 |
/// Constructor of the iterator |
| 509 | 513 |
ClassIt(const UnionFindEnum& ufe) : unionFind(&ufe) {
|
| 510 | 514 |
cdx = unionFind->firstClass; |
| 511 | 515 |
} |
| 512 | 516 |
|
| 513 | 517 |
/// \brief Constructor to get invalid iterator |
| 514 | 518 |
/// |
| 515 | 519 |
/// Constructor to get invalid iterator |
| 516 | 520 |
ClassIt(Invalid) : unionFind(0), cdx(-1) {}
|
| 517 | 521 |
|
| 518 | 522 |
/// \brief Increment operator |
| 519 | 523 |
/// |
| 520 | 524 |
/// It steps to the next representant item. |
| 521 | 525 |
ClassIt& operator++() {
|
| 522 | 526 |
cdx = unionFind->classes[cdx].next; |
| 523 | 527 |
return *this; |
| 524 | 528 |
} |
| 525 | 529 |
|
| 526 | 530 |
/// \brief Conversion operator |
| 527 | 531 |
/// |
| 528 | 532 |
/// It converts the iterator to the current representant item. |
| 529 | 533 |
operator int() const {
|
| 530 | 534 |
return cdx; |
| 531 | 535 |
} |
| 532 | 536 |
|
| 533 | 537 |
/// \brief Equality operator |
| 534 | 538 |
/// |
| 535 | 539 |
/// Equality operator |
| 536 | 540 |
bool operator==(const ClassIt& i) {
|
| 537 | 541 |
return i.cdx == cdx; |
| 538 | 542 |
} |
| 539 | 543 |
|
| 540 | 544 |
/// \brief Inequality operator |
| 541 | 545 |
/// |
| 542 | 546 |
/// Inequality operator |
| 543 | 547 |
bool operator!=(const ClassIt& i) {
|
| 544 | 548 |
return i.cdx != cdx; |
| 545 | 549 |
} |
| 546 | 550 |
|
| 547 | 551 |
private: |
| 548 | 552 |
const UnionFindEnum* unionFind; |
| 549 | 553 |
int cdx; |
| 550 | 554 |
}; |
| 551 | 555 |
|
| 552 | 556 |
/// \brief LEMON style iterator for the items of a component. |
| 553 | 557 |
/// |
| 554 | 558 |
/// ClassIt is a lemon style iterator for the components. It iterates |
| 555 | 559 |
/// on the items of a class. By example if you want to iterate on |
| 556 | 560 |
/// each items of each classes then you may write the next code. |
| 557 | 561 |
///\code |
| 558 | 562 |
/// for (ClassIt cit(ufe); cit != INVALID; ++cit) {
|
| 559 | 563 |
/// std::cout << "Class: "; |
| 560 | 564 |
/// for (ItemIt iit(ufe, cit); iit != INVALID; ++iit) {
|
| 561 | 565 |
/// std::cout << toString(iit) << ' ' << std::endl; |
| 562 | 566 |
/// } |
| 563 | 567 |
/// std::cout << std::endl; |
| 564 | 568 |
/// } |
| 565 | 569 |
///\endcode |
| 566 | 570 |
class ItemIt {
|
| 567 | 571 |
public: |
| 568 | 572 |
/// \brief Constructor of the iterator |
| 569 | 573 |
/// |
| 570 | 574 |
/// Constructor of the iterator. The iterator iterates |
| 571 | 575 |
/// on the class of the \c item. |
| 572 | 576 |
ItemIt(const UnionFindEnum& ufe, int cls) : unionFind(&ufe) {
|
| 573 | 577 |
fdx = idx = unionFind->classes[cls].firstItem; |
| 574 | 578 |
} |
| 575 | 579 |
|
| 576 | 580 |
/// \brief Constructor to get invalid iterator |
| 577 | 581 |
/// |
| 578 | 582 |
/// Constructor to get invalid iterator |
| 579 | 583 |
ItemIt(Invalid) : unionFind(0), idx(-1) {}
|
| 580 | 584 |
|
| 581 | 585 |
/// \brief Increment operator |
| 582 | 586 |
/// |
| 583 | 587 |
/// It steps to the next item in the class. |
| 584 | 588 |
ItemIt& operator++() {
|
| 585 | 589 |
idx = unionFind->items[idx].next; |
| 586 | 590 |
if (idx == fdx) idx = -1; |
| 587 | 591 |
return *this; |
| 588 | 592 |
} |
| 589 | 593 |
|
| 590 | 594 |
/// \brief Conversion operator |
| 591 | 595 |
/// |
| 592 | 596 |
/// It converts the iterator to the current item. |
| 593 | 597 |
operator const Item&() const {
|
| 594 | 598 |
return unionFind->items[idx].item; |
| 595 | 599 |
} |
| 596 | 600 |
|
| 597 | 601 |
/// \brief Equality operator |
| 598 | 602 |
/// |
| 599 | 603 |
/// Equality operator |
| 600 | 604 |
bool operator==(const ItemIt& i) {
|
| 601 | 605 |
return i.idx == idx; |
| 602 | 606 |
} |
| 603 | 607 |
|
| 604 | 608 |
/// \brief Inequality operator |
| 605 | 609 |
/// |
| 606 | 610 |
/// Inequality operator |
| 607 | 611 |
bool operator!=(const ItemIt& i) {
|
| 608 | 612 |
return i.idx != idx; |
| 609 | 613 |
} |
| 610 | 614 |
|
| 611 | 615 |
private: |
| 612 | 616 |
const UnionFindEnum* unionFind; |
| 613 | 617 |
int idx, fdx; |
| 614 | 618 |
}; |
| 615 | 619 |
|
| 616 | 620 |
}; |
| 617 | 621 |
|
| 618 | 622 |
/// \ingroup auxdat |
| 619 | 623 |
/// |
| 620 | 624 |
/// \brief A \e Extend-Find data structure implementation which |
| 621 | 625 |
/// is able to enumerate the components. |
| 622 | 626 |
/// |
| 623 | 627 |
/// The class implements an \e Extend-Find data structure which is |
| 624 | 628 |
/// able to enumerate the components and the items in a |
| 625 | 629 |
/// component. The data structure is a simplification of the |
| 626 | 630 |
/// Union-Find structure, and it does not allow to merge two components. |
| 627 | 631 |
/// |
| 628 | 632 |
/// \pre You need to add all the elements by the \ref insert() |
| 629 | 633 |
/// method. |
| 630 |
template <typename |
|
| 634 |
template <typename IM> |
|
| 631 | 635 |
class ExtendFindEnum {
|
| 632 | 636 |
public: |
| 633 | 637 |
|
| 634 |
|
|
| 638 |
///\e |
|
| 639 |
typedef IM ItemIntMap; |
|
| 640 |
///\e |
|
| 635 | 641 |
typedef typename ItemIntMap::Key Item; |
| 636 | 642 |
|
| 637 | 643 |
private: |
| 638 | 644 |
|
| 639 | 645 |
ItemIntMap& index; |
| 640 | 646 |
|
| 641 | 647 |
struct ItemT {
|
| 642 | 648 |
int cls; |
| 643 | 649 |
Item item; |
| 644 | 650 |
int next, prev; |
| 645 | 651 |
}; |
| 646 | 652 |
|
| 647 | 653 |
std::vector<ItemT> items; |
| 648 | 654 |
int firstFreeItem; |
| 649 | 655 |
|
| 650 | 656 |
struct ClassT {
|
| 651 | 657 |
int firstItem; |
| 652 | 658 |
int next, prev; |
| 653 | 659 |
}; |
| 654 | 660 |
|
| 655 | 661 |
std::vector<ClassT> classes; |
| 656 | 662 |
|
| 657 | 663 |
int firstClass, firstFreeClass; |
| 658 | 664 |
|
| 659 | 665 |
int newClass() {
|
| 660 | 666 |
if (firstFreeClass != -1) {
|
| 661 | 667 |
int cdx = firstFreeClass; |
| 662 | 668 |
firstFreeClass = classes[cdx].next; |
| 663 | 669 |
return cdx; |
| 664 | 670 |
} else {
|
| 665 | 671 |
classes.push_back(ClassT()); |
| 666 | 672 |
return classes.size() - 1; |
| 667 | 673 |
} |
| 668 | 674 |
} |
| 669 | 675 |
|
| 670 | 676 |
int newItem() {
|
| 671 | 677 |
if (firstFreeItem != -1) {
|
| 672 | 678 |
int idx = firstFreeItem; |
| 673 | 679 |
firstFreeItem = items[idx].next; |
| 674 | 680 |
return idx; |
| 675 | 681 |
} else {
|
| 676 | 682 |
items.push_back(ItemT()); |
| 677 | 683 |
return items.size() - 1; |
| 678 | 684 |
} |
| 679 | 685 |
} |
| 680 | 686 |
|
| 681 | 687 |
public: |
| 682 | 688 |
|
| 683 | 689 |
/// \brief Constructor |
| 684 | 690 |
ExtendFindEnum(ItemIntMap& _index) |
| 685 | 691 |
: index(_index), items(), firstFreeItem(-1), |
| 686 | 692 |
classes(), firstClass(-1), firstFreeClass(-1) {}
|
| 687 | 693 |
|
| 688 | 694 |
/// \brief Inserts the given element into a new component. |
| 689 | 695 |
/// |
| 690 | 696 |
/// This method creates a new component consisting only of the |
| 691 | 697 |
/// given element. |
| 692 | 698 |
int insert(const Item& item) {
|
| 693 | 699 |
int cdx = newClass(); |
| 694 | 700 |
classes[cdx].prev = -1; |
| 695 | 701 |
classes[cdx].next = firstClass; |
| 696 | 702 |
if (firstClass != -1) {
|
| 697 | 703 |
classes[firstClass].prev = cdx; |
| 698 | 704 |
} |
| 699 | 705 |
firstClass = cdx; |
| 700 | 706 |
|
| 701 | 707 |
int idx = newItem(); |
| 702 | 708 |
items[idx].item = item; |
| 703 | 709 |
items[idx].cls = cdx; |
| 704 | 710 |
items[idx].prev = idx; |
| 705 | 711 |
items[idx].next = idx; |
| 706 | 712 |
|
| 707 | 713 |
classes[cdx].firstItem = idx; |
| 708 | 714 |
|
| 709 | 715 |
index.set(item, idx); |
| 710 | 716 |
|
| 711 | 717 |
return cdx; |
| 712 | 718 |
} |
| 713 | 719 |
|
| 714 | 720 |
/// \brief Inserts the given element into the given component. |
| 715 | 721 |
/// |
| 716 | 722 |
/// This methods inserts the element \e item a into the \e cls class. |
| 717 | 723 |
void insert(const Item& item, int cls) {
|
| 718 | 724 |
int idx = newItem(); |
| 719 | 725 |
int rdx = classes[cls].firstItem; |
| 720 | 726 |
items[idx].item = item; |
| 721 | 727 |
items[idx].cls = cls; |
| 722 | 728 |
|
| 723 | 729 |
items[idx].prev = rdx; |
| 724 | 730 |
items[idx].next = items[rdx].next; |
| 725 | 731 |
items[items[rdx].next].prev = idx; |
| 726 | 732 |
items[rdx].next = idx; |
| 727 | 733 |
|
| 728 | 734 |
index.set(item, idx); |
| 729 | 735 |
} |
| 730 | 736 |
|
| 731 | 737 |
/// \brief Clears the union-find data structure |
| 732 | 738 |
/// |
| 733 | 739 |
/// Erase each item from the data structure. |
| 734 | 740 |
void clear() {
|
| 735 | 741 |
items.clear(); |
| 736 | 742 |
classes.clear; |
| 737 | 743 |
firstClass = firstFreeClass = firstFreeItem = -1; |
| 738 | 744 |
} |
| 739 | 745 |
|
| 740 | 746 |
/// \brief Gives back the class of the \e item. |
| 741 | 747 |
/// |
| 742 | 748 |
/// Gives back the class of the \e item. |
| 743 | 749 |
int find(const Item &item) const {
|
| 744 | 750 |
return items[index[item]].cls; |
| 745 | 751 |
} |
| 746 | 752 |
|
| 747 | 753 |
/// \brief Gives back a representant item of the component. |
| 748 | 754 |
/// |
| 749 | 755 |
/// Gives back a representant item of the component. |
| 750 | 756 |
Item item(int cls) const {
|
| 751 | 757 |
return items[classes[cls].firstItem].item; |
| 752 | 758 |
} |
| 753 | 759 |
|
| 754 | 760 |
/// \brief Removes the given element from the structure. |
| 755 | 761 |
/// |
| 756 | 762 |
/// Removes the element from its component and if the component becomes |
| 757 | 763 |
/// empty then removes that component from the component list. |
| 758 | 764 |
/// |
| 759 | 765 |
/// \warning It is an error to remove an element which is not in |
| 760 | 766 |
/// the structure. |
| 761 | 767 |
void erase(const Item &item) {
|
| 762 | 768 |
int idx = index[item]; |
| 763 | 769 |
int cdx = items[idx].cls; |
| 764 | 770 |
|
| 765 | 771 |
if (idx == items[idx].next) {
|
| 766 | 772 |
if (classes[cdx].prev != -1) {
|
| 767 | 773 |
classes[classes[cdx].prev].next = classes[cdx].next; |
| 768 | 774 |
} else {
|
| 769 | 775 |
firstClass = classes[cdx].next; |
| 770 | 776 |
} |
| 771 | 777 |
if (classes[cdx].next != -1) {
|
| 772 | 778 |
classes[classes[cdx].next].prev = classes[cdx].prev; |
| 773 | 779 |
} |
| 774 | 780 |
classes[cdx].next = firstFreeClass; |
| 775 | 781 |
firstFreeClass = cdx; |
| 776 | 782 |
} else {
|
| 777 | 783 |
classes[cdx].firstItem = items[idx].next; |
| 778 | 784 |
items[items[idx].next].prev = items[idx].prev; |
| 779 | 785 |
items[items[idx].prev].next = items[idx].next; |
| 780 | 786 |
} |
| 781 | 787 |
items[idx].next = firstFreeItem; |
| 782 | 788 |
firstFreeItem = idx; |
| 783 | 789 |
|
| 784 | 790 |
} |
| 785 | 791 |
|
| 786 | 792 |
|
| 787 | 793 |
/// \brief Removes the component of the given element from the structure. |
| 788 | 794 |
/// |
| 789 | 795 |
/// Removes the component of the given element from the structure. |
| 790 | 796 |
/// |
| 791 | 797 |
/// \warning It is an error to give an element which is not in the |
| 792 | 798 |
/// structure. |
| 793 | 799 |
void eraseClass(int cdx) {
|
| 794 | 800 |
int idx = classes[cdx].firstItem; |
| 795 | 801 |
items[items[idx].prev].next = firstFreeItem; |
| 796 | 802 |
firstFreeItem = idx; |
| 797 | 803 |
|
| 798 | 804 |
if (classes[cdx].prev != -1) {
|
| 799 | 805 |
classes[classes[cdx].prev].next = classes[cdx].next; |
| 800 | 806 |
} else {
|
| 801 | 807 |
firstClass = classes[cdx].next; |
| 802 | 808 |
} |
| 803 | 809 |
if (classes[cdx].next != -1) {
|
| 804 | 810 |
classes[classes[cdx].next].prev = classes[cdx].prev; |
| 805 | 811 |
} |
| 806 | 812 |
classes[cdx].next = firstFreeClass; |
| 807 | 813 |
firstFreeClass = cdx; |
| 808 | 814 |
} |
| 809 | 815 |
|
| 810 | 816 |
/// \brief LEMON style iterator for the classes. |
| 811 | 817 |
/// |
| 812 | 818 |
/// ClassIt is a lemon style iterator for the components. It iterates |
| 813 | 819 |
/// on the ids of classes. |
| 814 | 820 |
class ClassIt {
|
| 815 | 821 |
public: |
| 816 | 822 |
/// \brief Constructor of the iterator |
| 817 | 823 |
/// |
| 818 | 824 |
/// Constructor of the iterator |
| 819 | 825 |
ClassIt(const ExtendFindEnum& ufe) : extendFind(&ufe) {
|
| 820 | 826 |
cdx = extendFind->firstClass; |
| 821 | 827 |
} |
| 822 | 828 |
|
| 823 | 829 |
/// \brief Constructor to get invalid iterator |
| 824 | 830 |
/// |
| 825 | 831 |
/// Constructor to get invalid iterator |
| 826 | 832 |
ClassIt(Invalid) : extendFind(0), cdx(-1) {}
|
| 827 | 833 |
|
| 828 | 834 |
/// \brief Increment operator |
| 829 | 835 |
/// |
| 830 | 836 |
/// It steps to the next representant item. |
| 831 | 837 |
ClassIt& operator++() {
|
| 832 | 838 |
cdx = extendFind->classes[cdx].next; |
| 833 | 839 |
return *this; |
| 834 | 840 |
} |
| 835 | 841 |
|
| 836 | 842 |
/// \brief Conversion operator |
| 837 | 843 |
/// |
| 838 | 844 |
/// It converts the iterator to the current class id. |
| 839 | 845 |
operator int() const {
|
| 840 | 846 |
return cdx; |
| 841 | 847 |
} |
| 842 | 848 |
|
| 843 | 849 |
/// \brief Equality operator |
| 844 | 850 |
/// |
| 845 | 851 |
/// Equality operator |
| 846 | 852 |
bool operator==(const ClassIt& i) {
|
| 847 | 853 |
return i.cdx == cdx; |
| 848 | 854 |
} |
| 849 | 855 |
|
| 850 | 856 |
/// \brief Inequality operator |
| 851 | 857 |
/// |
| 852 | 858 |
/// Inequality operator |
| 853 | 859 |
bool operator!=(const ClassIt& i) {
|
| 854 | 860 |
return i.cdx != cdx; |
| 855 | 861 |
} |
| 856 | 862 |
|
| 857 | 863 |
private: |
| 858 | 864 |
const ExtendFindEnum* extendFind; |
| 859 | 865 |
int cdx; |
| 860 | 866 |
}; |
| 861 | 867 |
|
| 862 | 868 |
/// \brief LEMON style iterator for the items of a component. |
| 863 | 869 |
/// |
| 864 | 870 |
/// ClassIt is a lemon style iterator for the components. It iterates |
| 865 | 871 |
/// on the items of a class. By example if you want to iterate on |
| 866 | 872 |
/// each items of each classes then you may write the next code. |
| 867 | 873 |
///\code |
| 868 | 874 |
/// for (ClassIt cit(ufe); cit != INVALID; ++cit) {
|
| 869 | 875 |
/// std::cout << "Class: "; |
| 870 | 876 |
/// for (ItemIt iit(ufe, cit); iit != INVALID; ++iit) {
|
| 871 | 877 |
/// std::cout << toString(iit) << ' ' << std::endl; |
| 872 | 878 |
/// } |
| 873 | 879 |
/// std::cout << std::endl; |
| 874 | 880 |
/// } |
| 875 | 881 |
///\endcode |
| 876 | 882 |
class ItemIt {
|
| 877 | 883 |
public: |
| 878 | 884 |
/// \brief Constructor of the iterator |
| 879 | 885 |
/// |
| 880 | 886 |
/// Constructor of the iterator. The iterator iterates |
| 881 | 887 |
/// on the class of the \c item. |
| 882 | 888 |
ItemIt(const ExtendFindEnum& ufe, int cls) : extendFind(&ufe) {
|
| 883 | 889 |
fdx = idx = extendFind->classes[cls].firstItem; |
| 884 | 890 |
} |
| 885 | 891 |
|
| 886 | 892 |
/// \brief Constructor to get invalid iterator |
| 887 | 893 |
/// |
| 888 | 894 |
/// Constructor to get invalid iterator |
| 889 | 895 |
ItemIt(Invalid) : extendFind(0), idx(-1) {}
|
| 890 | 896 |
|
| 891 | 897 |
/// \brief Increment operator |
| 892 | 898 |
/// |
| 893 | 899 |
/// It steps to the next item in the class. |
| 894 | 900 |
ItemIt& operator++() {
|
| 895 | 901 |
idx = extendFind->items[idx].next; |
| 896 | 902 |
if (fdx == idx) idx = -1; |
| 897 | 903 |
return *this; |
| 898 | 904 |
} |
| 899 | 905 |
|
| 900 | 906 |
/// \brief Conversion operator |
| 901 | 907 |
/// |
| 902 | 908 |
/// It converts the iterator to the current item. |
| 903 | 909 |
operator const Item&() const {
|
| 904 | 910 |
return extendFind->items[idx].item; |
| 905 | 911 |
} |
| 906 | 912 |
|
| 907 | 913 |
/// \brief Equality operator |
| 908 | 914 |
/// |
| 909 | 915 |
/// Equality operator |
| 910 | 916 |
bool operator==(const ItemIt& i) {
|
| 911 | 917 |
return i.idx == idx; |
| 912 | 918 |
} |
| 913 | 919 |
|
| 914 | 920 |
/// \brief Inequality operator |
| 915 | 921 |
/// |
| 916 | 922 |
/// Inequality operator |
| 917 | 923 |
bool operator!=(const ItemIt& i) {
|
| 918 | 924 |
return i.idx != idx; |
| 919 | 925 |
} |
| 920 | 926 |
|
| 921 | 927 |
private: |
| 922 | 928 |
const ExtendFindEnum* extendFind; |
| 923 | 929 |
int idx, fdx; |
| 924 | 930 |
}; |
| 925 | 931 |
|
| 926 | 932 |
}; |
| 927 | 933 |
|
| 928 | 934 |
/// \ingroup auxdat |
| 929 | 935 |
/// |
| 930 | 936 |
/// \brief A \e Union-Find data structure implementation which |
| 931 | 937 |
/// is able to store a priority for each item and retrieve the minimum of |
| 932 | 938 |
/// each class. |
| 933 | 939 |
/// |
| 934 | 940 |
/// A \e Union-Find data structure implementation which is able to |
| 935 | 941 |
/// store a priority for each item and retrieve the minimum of each |
| 936 | 942 |
/// class. In addition, it supports the joining and splitting the |
| 937 | 943 |
/// components. If you don't need this feature then you makes |
| 938 | 944 |
/// better to use the \ref UnionFind class which is more efficient. |
| 939 | 945 |
/// |
| 940 | 946 |
/// The union-find data strcuture based on a (2, 16)-tree with a |
| 941 | 947 |
/// tournament minimum selection on the internal nodes. The insert |
| 942 | 948 |
/// operation takes O(1), the find, set, decrease and increase takes |
| 943 | 949 |
/// O(log(n)), where n is the number of nodes in the current |
| 944 | 950 |
/// component. The complexity of join and split is O(log(n)*k), |
| 945 | 951 |
/// where n is the sum of the number of the nodes and k is the |
| 946 | 952 |
/// number of joined components or the number of the components |
| 947 | 953 |
/// after the split. |
| 948 | 954 |
/// |
| 949 | 955 |
/// \pre You need to add all the elements by the \ref insert() |
| 950 | 956 |
/// method. |
| 951 |
/// |
|
| 952 |
template <typename _Value, typename _ItemIntMap, |
|
| 953 |
|
|
| 957 |
template <typename V, typename IM, typename Comp = std::less<V> > |
|
| 954 | 958 |
class HeapUnionFind {
|
| 955 | 959 |
public: |
| 956 | 960 |
|
| 957 |
typedef _Value Value; |
|
| 958 |
typedef typename _ItemIntMap::Key Item; |
|
| 959 |
|
|
| 960 |
typedef _ItemIntMap ItemIntMap; |
|
| 961 |
|
|
| 962 |
typedef _Comp Comp; |
|
| 961 |
///\e |
|
| 962 |
typedef V Value; |
|
| 963 |
///\e |
|
| 964 |
typedef typename IM::Key Item; |
|
| 965 |
///\e |
|
| 966 |
typedef IM ItemIntMap; |
|
| 967 |
///\e |
|
| 968 |
typedef Comp Compare; |
|
| 963 | 969 |
|
| 964 | 970 |
private: |
| 965 | 971 |
|
| 966 | 972 |
static const int cmax = 16; |
| 967 | 973 |
|
| 968 | 974 |
ItemIntMap& index; |
| 969 | 975 |
|
| 970 | 976 |
struct ClassNode {
|
| 971 | 977 |
int parent; |
| 972 | 978 |
int depth; |
| 973 | 979 |
|
| 974 | 980 |
int left, right; |
| 975 | 981 |
int next, prev; |
| 976 | 982 |
}; |
| 977 | 983 |
|
| 978 | 984 |
int first_class; |
| 979 | 985 |
int first_free_class; |
| 980 | 986 |
std::vector<ClassNode> classes; |
| 981 | 987 |
|
| 982 | 988 |
int newClass() {
|
| 983 | 989 |
if (first_free_class < 0) {
|
| 984 | 990 |
int id = classes.size(); |
| 985 | 991 |
classes.push_back(ClassNode()); |
| 986 | 992 |
return id; |
| 987 | 993 |
} else {
|
| 988 | 994 |
int id = first_free_class; |
| 989 | 995 |
first_free_class = classes[id].next; |
| 990 | 996 |
return id; |
| 991 | 997 |
} |
| 992 | 998 |
} |
| 993 | 999 |
|
| 994 | 1000 |
void deleteClass(int id) {
|
| 995 | 1001 |
classes[id].next = first_free_class; |
| 996 | 1002 |
first_free_class = id; |
| 997 | 1003 |
} |
| 998 | 1004 |
|
| 999 | 1005 |
struct ItemNode {
|
| 1000 | 1006 |
int parent; |
| 1001 | 1007 |
Item item; |
| 1002 | 1008 |
Value prio; |
| 1003 | 1009 |
int next, prev; |
| 1004 | 1010 |
int left, right; |
| 1005 | 1011 |
int size; |
| 1006 | 1012 |
}; |
| 1007 | 1013 |
|
| 1008 | 1014 |
int first_free_node; |
| 1009 | 1015 |
std::vector<ItemNode> nodes; |
| 1010 | 1016 |
|
| 1011 | 1017 |
int newNode() {
|
| 1012 | 1018 |
if (first_free_node < 0) {
|
| 1013 | 1019 |
int id = nodes.size(); |
| 1014 | 1020 |
nodes.push_back(ItemNode()); |
| 1015 | 1021 |
return id; |
| 1016 | 1022 |
} else {
|
| 1017 | 1023 |
int id = first_free_node; |
| 1018 | 1024 |
first_free_node = nodes[id].next; |
| 1019 | 1025 |
return id; |
| 1020 | 1026 |
} |
| 1021 | 1027 |
} |
| 1022 | 1028 |
|
| 1023 | 1029 |
void deleteNode(int id) {
|
| 1024 | 1030 |
nodes[id].next = first_free_node; |
| 1025 | 1031 |
first_free_node = id; |
| 1026 | 1032 |
} |
| 1027 | 1033 |
|
| 1028 | 1034 |
Comp comp; |
| 1029 | 1035 |
|
| 1030 | 1036 |
int findClass(int id) const {
|
| 1031 | 1037 |
int kd = id; |
| 1032 | 1038 |
while (kd >= 0) {
|
| 1033 | 1039 |
kd = nodes[kd].parent; |
| 1034 | 1040 |
} |
| 1035 | 1041 |
return ~kd; |
| 1036 | 1042 |
} |
| 1037 | 1043 |
|
| 1038 | 1044 |
int leftNode(int id) const {
|
| 1039 | 1045 |
int kd = ~(classes[id].parent); |
| 1040 | 1046 |
for (int i = 0; i < classes[id].depth; ++i) {
|
| 1041 | 1047 |
kd = nodes[kd].left; |
| 1042 | 1048 |
} |
| 1043 | 1049 |
return kd; |
| 1044 | 1050 |
} |
| 1045 | 1051 |
|
| 1046 | 1052 |
int nextNode(int id) const {
|
| 1047 | 1053 |
int depth = 0; |
| 1048 | 1054 |
while (id >= 0 && nodes[id].next == -1) {
|
| 1049 | 1055 |
id = nodes[id].parent; |
| 1050 | 1056 |
++depth; |
| 1051 | 1057 |
} |
| 1052 | 1058 |
if (id < 0) {
|
| 1053 | 1059 |
return -1; |
| 1054 | 1060 |
} |
| 1055 | 1061 |
id = nodes[id].next; |
| 1056 | 1062 |
while (depth--) {
|
| 1057 | 1063 |
id = nodes[id].left; |
| 1058 | 1064 |
} |
| 1059 | 1065 |
return id; |
| 1060 | 1066 |
} |
| 1061 | 1067 |
|
| 1062 | 1068 |
|
| 1063 | 1069 |
void setPrio(int id) {
|
| 1064 | 1070 |
int jd = nodes[id].left; |
| 1065 | 1071 |
nodes[id].prio = nodes[jd].prio; |
| 1066 | 1072 |
nodes[id].item = nodes[jd].item; |
| 1067 | 1073 |
jd = nodes[jd].next; |
| 1068 | 1074 |
while (jd != -1) {
|
| 1069 | 1075 |
if (comp(nodes[jd].prio, nodes[id].prio)) {
|
| 1070 | 1076 |
nodes[id].prio = nodes[jd].prio; |
| 1071 | 1077 |
nodes[id].item = nodes[jd].item; |
| 1072 | 1078 |
} |
| 1073 | 1079 |
jd = nodes[jd].next; |
| 1074 | 1080 |
} |
| 1075 | 1081 |
} |
| 1076 | 1082 |
|
| 1077 | 1083 |
void push(int id, int jd) {
|
| 1078 | 1084 |
nodes[id].size = 1; |
| 1079 | 1085 |
nodes[id].left = nodes[id].right = jd; |
| 1080 | 1086 |
nodes[jd].next = nodes[jd].prev = -1; |
| 1081 | 1087 |
nodes[jd].parent = id; |
| 1082 | 1088 |
} |
| 1083 | 1089 |
|
| 1084 | 1090 |
void pushAfter(int id, int jd) {
|
| 1085 | 1091 |
int kd = nodes[id].parent; |
| 1086 | 1092 |
if (nodes[id].next != -1) {
|
| 1087 | 1093 |
nodes[nodes[id].next].prev = jd; |
| 1088 | 1094 |
if (kd >= 0) {
|
| 1089 | 1095 |
nodes[kd].size += 1; |
| 1090 | 1096 |
} |
| 1091 | 1097 |
} else {
|
| 1092 | 1098 |
if (kd >= 0) {
|
| 1093 | 1099 |
nodes[kd].right = jd; |
| 1094 | 1100 |
nodes[kd].size += 1; |
| 1095 | 1101 |
} |
| 1096 | 1102 |
} |
| 1097 | 1103 |
nodes[jd].next = nodes[id].next; |
| 1098 | 1104 |
nodes[jd].prev = id; |
| 1099 | 1105 |
nodes[id].next = jd; |
| 1100 | 1106 |
nodes[jd].parent = kd; |
| 1101 | 1107 |
} |
| 1102 | 1108 |
|
| 1103 | 1109 |
void pushRight(int id, int jd) {
|
| 1104 | 1110 |
nodes[id].size += 1; |
| 1105 | 1111 |
nodes[jd].prev = nodes[id].right; |
| 1106 | 1112 |
nodes[jd].next = -1; |
| 1107 | 1113 |
nodes[nodes[id].right].next = jd; |
| 1108 | 1114 |
nodes[id].right = jd; |
| 1109 | 1115 |
nodes[jd].parent = id; |
| 1110 | 1116 |
} |
| 1111 | 1117 |
|
| 1112 | 1118 |
void popRight(int id) {
|
| 1113 | 1119 |
nodes[id].size -= 1; |
| 1114 | 1120 |
int jd = nodes[id].right; |
| 1115 | 1121 |
nodes[nodes[jd].prev].next = -1; |
| 1116 | 1122 |
nodes[id].right = nodes[jd].prev; |
| 1117 | 1123 |
} |
| 1118 | 1124 |
|
| 1119 | 1125 |
void splice(int id, int jd) {
|
| 1120 | 1126 |
nodes[id].size += nodes[jd].size; |
| 1121 | 1127 |
nodes[nodes[id].right].next = nodes[jd].left; |
| 1122 | 1128 |
nodes[nodes[jd].left].prev = nodes[id].right; |
| 1123 | 1129 |
int kd = nodes[jd].left; |
| 1124 | 1130 |
while (kd != -1) {
|
| 1125 | 1131 |
nodes[kd].parent = id; |
| 1126 | 1132 |
kd = nodes[kd].next; |
| 1127 | 1133 |
} |
| 1128 | 1134 |
nodes[id].right = nodes[jd].right; |
| 1129 | 1135 |
} |
| 1130 | 1136 |
|
| 1131 | 1137 |
void split(int id, int jd) {
|
| 1132 | 1138 |
int kd = nodes[id].parent; |
| 1133 | 1139 |
nodes[kd].right = nodes[id].prev; |
| 1134 | 1140 |
nodes[nodes[id].prev].next = -1; |
| 1135 | 1141 |
|
| 1136 | 1142 |
nodes[jd].left = id; |
| 1137 | 1143 |
nodes[id].prev = -1; |
| 1138 | 1144 |
int num = 0; |
| 1139 | 1145 |
while (id != -1) {
|
| 1140 | 1146 |
nodes[id].parent = jd; |
| 1141 | 1147 |
nodes[jd].right = id; |
| 1142 | 1148 |
id = nodes[id].next; |
| 1143 | 1149 |
++num; |
| 1144 | 1150 |
} |
| 1145 | 1151 |
nodes[kd].size -= num; |
| 1146 | 1152 |
nodes[jd].size = num; |
| 1147 | 1153 |
} |
| 1148 | 1154 |
|
| 1149 | 1155 |
void pushLeft(int id, int jd) {
|
| 1150 | 1156 |
nodes[id].size += 1; |
| 1151 | 1157 |
nodes[jd].next = nodes[id].left; |
| 1152 | 1158 |
nodes[jd].prev = -1; |
| 1153 | 1159 |
nodes[nodes[id].left].prev = jd; |
| 1154 | 1160 |
nodes[id].left = jd; |
| 1155 | 1161 |
nodes[jd].parent = id; |
| 1156 | 1162 |
} |
| 1157 | 1163 |
|
| 1158 | 1164 |
void popLeft(int id) {
|
| 1159 | 1165 |
nodes[id].size -= 1; |
| 1160 | 1166 |
int jd = nodes[id].left; |
| 1161 | 1167 |
nodes[nodes[jd].next].prev = -1; |
| 1162 | 1168 |
nodes[id].left = nodes[jd].next; |
| 1163 | 1169 |
} |
| 1164 | 1170 |
|
| 1165 | 1171 |
void repairLeft(int id) {
|
| 1166 | 1172 |
int jd = ~(classes[id].parent); |
| 1167 | 1173 |
while (nodes[jd].left != -1) {
|
| 1168 | 1174 |
int kd = nodes[jd].left; |
| 1169 | 1175 |
if (nodes[jd].size == 1) {
|
| 1170 | 1176 |
if (nodes[jd].parent < 0) {
|
| 1171 | 1177 |
classes[id].parent = ~kd; |
| 1172 | 1178 |
classes[id].depth -= 1; |
| 1173 | 1179 |
nodes[kd].parent = ~id; |
| 1174 | 1180 |
deleteNode(jd); |
| 1175 | 1181 |
jd = kd; |
| 1176 | 1182 |
} else {
|
| 1177 | 1183 |
int pd = nodes[jd].parent; |
| 1178 | 1184 |
if (nodes[nodes[jd].next].size < cmax) {
|
| 1179 | 1185 |
pushLeft(nodes[jd].next, nodes[jd].left); |
| 1180 | 1186 |
if (less(jd, nodes[jd].next) || |
| 1181 | 1187 |
nodes[jd].item == nodes[pd].item) {
|
| 1182 | 1188 |
nodes[nodes[jd].next].prio = nodes[jd].prio; |
| 1183 | 1189 |
nodes[nodes[jd].next].item = nodes[jd].item; |
| 1184 | 1190 |
} |
| 1185 | 1191 |
popLeft(pd); |
| 1186 | 1192 |
deleteNode(jd); |
| 1187 | 1193 |
jd = pd; |
| 1188 | 1194 |
} else {
|
| 1189 | 1195 |
int ld = nodes[nodes[jd].next].left; |
| 1190 | 1196 |
popLeft(nodes[jd].next); |
| 1191 | 1197 |
pushRight(jd, ld); |
| 1192 | 1198 |
if (less(ld, nodes[jd].left) || |
| 1193 | 1199 |
nodes[ld].item == nodes[pd].item) {
|
| 1194 | 1200 |
nodes[jd].item = nodes[ld].item; |
| 1195 | 1201 |
nodes[jd].prio = nodes[ld].prio; |
| 1196 | 1202 |
} |
| 1197 | 1203 |
if (nodes[nodes[jd].next].item == nodes[ld].item) {
|
| 1198 | 1204 |
setPrio(nodes[jd].next); |
| 1199 | 1205 |
} |
| 1200 | 1206 |
jd = nodes[jd].left; |
| 1201 | 1207 |
} |
| 1202 | 1208 |
} |
| 1203 | 1209 |
} else {
|
| 1204 | 1210 |
jd = nodes[jd].left; |
| 1205 | 1211 |
} |
| 1206 | 1212 |
} |
| 1207 | 1213 |
} |
| 1208 | 1214 |
|
| 1209 | 1215 |
void repairRight(int id) {
|
| 1210 | 1216 |
int jd = ~(classes[id].parent); |
| 1211 | 1217 |
while (nodes[jd].right != -1) {
|
| 1212 | 1218 |
int kd = nodes[jd].right; |
| 1213 | 1219 |
if (nodes[jd].size == 1) {
|
| 1214 | 1220 |
if (nodes[jd].parent < 0) {
|
| 1215 | 1221 |
classes[id].parent = ~kd; |
| 1216 | 1222 |
classes[id].depth -= 1; |
| 1217 | 1223 |
nodes[kd].parent = ~id; |
| 1218 | 1224 |
deleteNode(jd); |
| 1219 | 1225 |
jd = kd; |
| 1220 | 1226 |
} else {
|
| 1221 | 1227 |
int pd = nodes[jd].parent; |
| 1222 | 1228 |
if (nodes[nodes[jd].prev].size < cmax) {
|
| 1223 | 1229 |
pushRight(nodes[jd].prev, nodes[jd].right); |
| 1224 | 1230 |
if (less(jd, nodes[jd].prev) || |
| 1225 | 1231 |
nodes[jd].item == nodes[pd].item) {
|
| 1226 | 1232 |
nodes[nodes[jd].prev].prio = nodes[jd].prio; |
| 1227 | 1233 |
nodes[nodes[jd].prev].item = nodes[jd].item; |
| 1228 | 1234 |
} |
| 1229 | 1235 |
popRight(pd); |
| 1230 | 1236 |
deleteNode(jd); |
| 1231 | 1237 |
jd = pd; |
| 1232 | 1238 |
} else {
|
| 1233 | 1239 |
int ld = nodes[nodes[jd].prev].right; |
| 1234 | 1240 |
popRight(nodes[jd].prev); |
| 1235 | 1241 |
pushLeft(jd, ld); |
| 1236 | 1242 |
if (less(ld, nodes[jd].right) || |
| 1237 | 1243 |
nodes[ld].item == nodes[pd].item) {
|
| 1238 | 1244 |
nodes[jd].item = nodes[ld].item; |
| 1239 | 1245 |
nodes[jd].prio = nodes[ld].prio; |
| 1240 | 1246 |
} |
| 1241 | 1247 |
if (nodes[nodes[jd].prev].item == nodes[ld].item) {
|
| 1242 | 1248 |
setPrio(nodes[jd].prev); |
| 1243 | 1249 |
} |
| 1244 | 1250 |
jd = nodes[jd].right; |
| 1245 | 1251 |
} |
| 1246 | 1252 |
} |
| 1247 | 1253 |
} else {
|
| 1248 | 1254 |
jd = nodes[jd].right; |
| 1249 | 1255 |
} |
| 1250 | 1256 |
} |
| 1251 | 1257 |
} |
| 1252 | 1258 |
|
| 1253 | 1259 |
|
| 1254 | 1260 |
bool less(int id, int jd) const {
|
| 1255 | 1261 |
return comp(nodes[id].prio, nodes[jd].prio); |
| 1256 | 1262 |
} |
| 1257 | 1263 |
|
| 1258 | 1264 |
public: |
| 1259 | 1265 |
|
| 1260 | 1266 |
/// \brief Returns true when the given class is alive. |
| 1261 | 1267 |
/// |
| 1262 | 1268 |
/// Returns true when the given class is alive, ie. the class is |
| 1263 | 1269 |
/// not nested into other class. |
| 1264 | 1270 |
bool alive(int cls) const {
|
| 1265 | 1271 |
return classes[cls].parent < 0; |
| 1266 | 1272 |
} |
| 1267 | 1273 |
|
| 1268 | 1274 |
/// \brief Returns true when the given class is trivial. |
| 1269 | 1275 |
/// |
| 1270 | 1276 |
/// Returns true when the given class is trivial, ie. the class |
| 1271 | 1277 |
/// contains just one item directly. |
| 1272 | 1278 |
bool trivial(int cls) const {
|
| 1273 | 1279 |
return classes[cls].left == -1; |
| 1274 | 1280 |
} |
| 1275 | 1281 |
|
| 1276 | 1282 |
/// \brief Constructs the union-find. |
| 1277 | 1283 |
/// |
| 1278 | 1284 |
/// Constructs the union-find. |
| 1279 | 1285 |
/// \brief _index The index map of the union-find. The data |
| 1280 | 1286 |
/// structure uses internally for store references. |
| 1281 | 1287 |
HeapUnionFind(ItemIntMap& _index) |
| 1282 | 1288 |
: index(_index), first_class(-1), |
| 1283 | 1289 |
first_free_class(-1), first_free_node(-1) {}
|
| 1284 | 1290 |
|
| 1285 | 1291 |
/// \brief Insert a new node into a new component. |
| 1286 | 1292 |
/// |
| 1287 | 1293 |
/// Insert a new node into a new component. |
| 1288 | 1294 |
/// \param item The item of the new node. |
| 1289 | 1295 |
/// \param prio The priority of the new node. |
| 1290 | 1296 |
/// \return The class id of the one-item-heap. |
| 1291 | 1297 |
int insert(const Item& item, const Value& prio) {
|
| 1292 | 1298 |
int id = newNode(); |
| 1293 | 1299 |
nodes[id].item = item; |
| 1294 | 1300 |
nodes[id].prio = prio; |
| 1295 | 1301 |
nodes[id].size = 0; |
| 1296 | 1302 |
|
| 1297 | 1303 |
nodes[id].prev = -1; |
| 1298 | 1304 |
nodes[id].next = -1; |
| 1299 | 1305 |
|
| 1300 | 1306 |
nodes[id].left = -1; |
| 1301 | 1307 |
nodes[id].right = -1; |
| 1302 | 1308 |
|
| 1303 | 1309 |
nodes[id].item = item; |
| 1304 | 1310 |
index[item] = id; |
| 1305 | 1311 |
|
| 1306 | 1312 |
int class_id = newClass(); |
| 1307 | 1313 |
classes[class_id].parent = ~id; |
| 1308 | 1314 |
classes[class_id].depth = 0; |
| 1309 | 1315 |
|
| 1310 | 1316 |
classes[class_id].left = -1; |
| 1311 | 1317 |
classes[class_id].right = -1; |
| 1312 | 1318 |
|
| 1313 | 1319 |
if (first_class != -1) {
|
| 1314 | 1320 |
classes[first_class].prev = class_id; |
| 1315 | 1321 |
} |
| 1316 | 1322 |
classes[class_id].next = first_class; |
| 1317 | 1323 |
classes[class_id].prev = -1; |
| 1318 | 1324 |
first_class = class_id; |
| 1319 | 1325 |
|
| 1320 | 1326 |
nodes[id].parent = ~class_id; |
| 1321 | 1327 |
|
| 1322 | 1328 |
return class_id; |
| 1323 | 1329 |
} |
| 1324 | 1330 |
|
| 1325 | 1331 |
/// \brief The class of the item. |
| 1326 | 1332 |
/// |
| 1327 | 1333 |
/// \return The alive class id of the item, which is not nested into |
| 1328 | 1334 |
/// other classes. |
| 1329 | 1335 |
/// |
| 1330 | 1336 |
/// The time complexity is O(log(n)). |
| 1331 | 1337 |
int find(const Item& item) const {
|
| 1332 | 1338 |
return findClass(index[item]); |
| 1333 | 1339 |
} |
| 1334 | 1340 |
|
| 1335 | 1341 |
/// \brief Joins the classes. |
| 1336 | 1342 |
/// |
| 1337 | 1343 |
/// The current function joins the given classes. The parameter is |
| 1338 | 1344 |
/// an STL range which should be contains valid class ids. The |
| 1339 | 1345 |
/// time complexity is O(log(n)*k) where n is the overall number |
| 1340 | 1346 |
/// of the joined nodes and k is the number of classes. |
| 1341 | 1347 |
/// \return The class of the joined classes. |
| 1342 | 1348 |
/// \pre The range should contain at least two class ids. |
| 1343 | 1349 |
template <typename Iterator> |
| 1344 | 1350 |
int join(Iterator begin, Iterator end) {
|
| 1345 | 1351 |
std::vector<int> cs; |
| 1346 | 1352 |
for (Iterator it = begin; it != end; ++it) {
|
| 1347 | 1353 |
cs.push_back(*it); |
| 1348 | 1354 |
} |
| 1349 | 1355 |
|
| 1350 | 1356 |
int class_id = newClass(); |
| 1351 | 1357 |
{ // creation union-find
|
| 1352 | 1358 |
|
| 1353 | 1359 |
if (first_class != -1) {
|
| 1354 | 1360 |
classes[first_class].prev = class_id; |
| 1355 | 1361 |
} |
| 1356 | 1362 |
classes[class_id].next = first_class; |
| 1357 | 1363 |
classes[class_id].prev = -1; |
| 1358 | 1364 |
first_class = class_id; |
| 1359 | 1365 |
|
| 1360 | 1366 |
classes[class_id].depth = classes[cs[0]].depth; |
| 1361 | 1367 |
classes[class_id].parent = classes[cs[0]].parent; |
| 1362 | 1368 |
nodes[~(classes[class_id].parent)].parent = ~class_id; |
| 1363 | 1369 |
|
| 1364 | 1370 |
int l = cs[0]; |
| 1365 | 1371 |
|
| 1366 | 1372 |
classes[class_id].left = l; |
| 1367 | 1373 |
classes[class_id].right = l; |
| 1368 | 1374 |
|
| 1369 | 1375 |
if (classes[l].next != -1) {
|
| 1370 | 1376 |
classes[classes[l].next].prev = classes[l].prev; |
| 1371 | 1377 |
} |
| 1372 | 1378 |
classes[classes[l].prev].next = classes[l].next; |
| 1373 | 1379 |
|
| 1374 | 1380 |
classes[l].prev = -1; |
| 1375 | 1381 |
classes[l].next = -1; |
| 1376 | 1382 |
|
| 1377 | 1383 |
classes[l].depth = leftNode(l); |
| 1378 | 1384 |
classes[l].parent = class_id; |
| 1379 | 1385 |
|
| 1380 | 1386 |
} |
| 1381 | 1387 |
|
| 1382 | 1388 |
{ // merging of heap
|
| 1383 | 1389 |
int l = class_id; |
| 1384 | 1390 |
for (int ci = 1; ci < int(cs.size()); ++ci) {
|
| 1385 | 1391 |
int r = cs[ci]; |
| 1386 | 1392 |
int rln = leftNode(r); |
| 1387 | 1393 |
if (classes[l].depth > classes[r].depth) {
|
| 1388 | 1394 |
int id = ~(classes[l].parent); |
| 1389 | 1395 |
for (int i = classes[r].depth + 1; i < classes[l].depth; ++i) {
|
| 1390 | 1396 |
id = nodes[id].right; |
| 1391 | 1397 |
} |
| 1392 | 1398 |
while (id >= 0 && nodes[id].size == cmax) {
|
| 1393 | 1399 |
int new_id = newNode(); |
| 1394 | 1400 |
int right_id = nodes[id].right; |
| 1395 | 1401 |
|
| 1396 | 1402 |
popRight(id); |
| 1397 | 1403 |
if (nodes[id].item == nodes[right_id].item) {
|
| 1398 | 1404 |
setPrio(id); |
| 1399 | 1405 |
} |
| 1400 | 1406 |
push(new_id, right_id); |
| 1401 | 1407 |
pushRight(new_id, ~(classes[r].parent)); |
| 1402 | 1408 |
|
| 1403 | 1409 |
if (less(~classes[r].parent, right_id)) {
|
| 1404 | 1410 |
nodes[new_id].item = nodes[~classes[r].parent].item; |
| 1405 | 1411 |
nodes[new_id].prio = nodes[~classes[r].parent].prio; |
| 1406 | 1412 |
} else {
|
| 1407 | 1413 |
nodes[new_id].item = nodes[right_id].item; |
| 1408 | 1414 |
nodes[new_id].prio = nodes[right_id].prio; |
| 1409 | 1415 |
} |
| 1410 | 1416 |
|
| 1411 | 1417 |
id = nodes[id].parent; |
| 1412 | 1418 |
classes[r].parent = ~new_id; |
| 1413 | 1419 |
} |
| 1414 | 1420 |
if (id < 0) {
|
| 1415 | 1421 |
int new_parent = newNode(); |
| 1416 | 1422 |
nodes[new_parent].next = -1; |
| 1417 | 1423 |
nodes[new_parent].prev = -1; |
| 1418 | 1424 |
nodes[new_parent].parent = ~l; |
| 1419 | 1425 |
|
| 1420 | 1426 |
push(new_parent, ~(classes[l].parent)); |
| 1421 | 1427 |
pushRight(new_parent, ~(classes[r].parent)); |
| 1422 | 1428 |
setPrio(new_parent); |
| 1423 | 1429 |
|
| 1424 | 1430 |
classes[l].parent = ~new_parent; |
| 1425 | 1431 |
classes[l].depth += 1; |
| 1426 | 1432 |
} else {
|
| 1427 | 1433 |
pushRight(id, ~(classes[r].parent)); |
| 1428 | 1434 |
while (id >= 0 && less(~(classes[r].parent), id)) {
|
| 1429 | 1435 |
nodes[id].prio = nodes[~(classes[r].parent)].prio; |
| 1430 | 1436 |
nodes[id].item = nodes[~(classes[r].parent)].item; |
| 1431 | 1437 |
id = nodes[id].parent; |
| 1432 | 1438 |
} |
| 1433 | 1439 |
} |
| 1434 | 1440 |
} else if (classes[r].depth > classes[l].depth) {
|
| 1435 | 1441 |
int id = ~(classes[r].parent); |
| 1436 | 1442 |
for (int i = classes[l].depth + 1; i < classes[r].depth; ++i) {
|
| 1437 | 1443 |
id = nodes[id].left; |
| 1438 | 1444 |
} |
| 1439 | 1445 |
while (id >= 0 && nodes[id].size == cmax) {
|
| 1440 | 1446 |
int new_id = newNode(); |
| 1441 | 1447 |
int left_id = nodes[id].left; |
| 1442 | 1448 |
|
| 1443 | 1449 |
popLeft(id); |
| 1444 | 1450 |
if (nodes[id].prio == nodes[left_id].prio) {
|
| 1445 | 1451 |
setPrio(id); |
| 1446 | 1452 |
} |
| 1447 | 1453 |
push(new_id, left_id); |
| 1448 | 1454 |
pushLeft(new_id, ~(classes[l].parent)); |
| 1449 | 1455 |
|
| 1450 | 1456 |
if (less(~classes[l].parent, left_id)) {
|
| 1451 | 1457 |
nodes[new_id].item = nodes[~classes[l].parent].item; |
| 1452 | 1458 |
nodes[new_id].prio = nodes[~classes[l].parent].prio; |
| 1453 | 1459 |
} else {
|
| 1454 | 1460 |
nodes[new_id].item = nodes[left_id].item; |
| 1455 | 1461 |
nodes[new_id].prio = nodes[left_id].prio; |
| 1456 | 1462 |
} |
| 1457 | 1463 |
|
| 1458 | 1464 |
id = nodes[id].parent; |
| 1459 | 1465 |
classes[l].parent = ~new_id; |
| 1460 | 1466 |
|
| 1461 | 1467 |
} |
| 1462 | 1468 |
if (id < 0) {
|
| 1463 | 1469 |
int new_parent = newNode(); |
| 1464 | 1470 |
nodes[new_parent].next = -1; |
| 1465 | 1471 |
nodes[new_parent].prev = -1; |
| 1466 | 1472 |
nodes[new_parent].parent = ~l; |
| 1467 | 1473 |
|
| 1468 | 1474 |
push(new_parent, ~(classes[r].parent)); |
| 1469 | 1475 |
pushLeft(new_parent, ~(classes[l].parent)); |
| 1470 | 1476 |
setPrio(new_parent); |
| 1471 | 1477 |
|
| 1472 | 1478 |
classes[r].parent = ~new_parent; |
| 1473 | 1479 |
classes[r].depth += 1; |
| 1474 | 1480 |
} else {
|
| 1475 | 1481 |
pushLeft(id, ~(classes[l].parent)); |
| 1476 | 1482 |
while (id >= 0 && less(~(classes[l].parent), id)) {
|
| 1477 | 1483 |
nodes[id].prio = nodes[~(classes[l].parent)].prio; |
| 1478 | 1484 |
nodes[id].item = nodes[~(classes[l].parent)].item; |
| 1479 | 1485 |
id = nodes[id].parent; |
| 1480 | 1486 |
} |
| 1481 | 1487 |
} |
| 1482 | 1488 |
nodes[~(classes[r].parent)].parent = ~l; |
| 1483 | 1489 |
classes[l].parent = classes[r].parent; |
| 1484 | 1490 |
classes[l].depth = classes[r].depth; |
| 1485 | 1491 |
} else {
|
| 1486 | 1492 |
if (classes[l].depth != 0 && |
| 1487 | 1493 |
nodes[~(classes[l].parent)].size + |
| 1488 | 1494 |
nodes[~(classes[r].parent)].size <= cmax) {
|
| 1489 | 1495 |
splice(~(classes[l].parent), ~(classes[r].parent)); |
| 1490 | 1496 |
deleteNode(~(classes[r].parent)); |
| 1491 | 1497 |
if (less(~(classes[r].parent), ~(classes[l].parent))) {
|
| 1492 | 1498 |
nodes[~(classes[l].parent)].prio = |
| 1493 | 1499 |
nodes[~(classes[r].parent)].prio; |
| 1494 | 1500 |
nodes[~(classes[l].parent)].item = |
| 1495 | 1501 |
nodes[~(classes[r].parent)].item; |
| 1496 | 1502 |
} |
| 1497 | 1503 |
} else {
|
| 1498 | 1504 |
int new_parent = newNode(); |
| 1499 | 1505 |
nodes[new_parent].next = nodes[new_parent].prev = -1; |
| 1500 | 1506 |
push(new_parent, ~(classes[l].parent)); |
| 1501 | 1507 |
pushRight(new_parent, ~(classes[r].parent)); |
| 1502 | 1508 |
setPrio(new_parent); |
| 1503 | 1509 |
|
| 1504 | 1510 |
classes[l].parent = ~new_parent; |
| 1505 | 1511 |
classes[l].depth += 1; |
| 1506 | 1512 |
nodes[new_parent].parent = ~l; |
| 1507 | 1513 |
} |
| 1508 | 1514 |
} |
| 1509 | 1515 |
if (classes[r].next != -1) {
|
| 1510 | 1516 |
classes[classes[r].next].prev = classes[r].prev; |
| 1511 | 1517 |
} |
| 1512 | 1518 |
classes[classes[r].prev].next = classes[r].next; |
| 1513 | 1519 |
|
| 1514 | 1520 |
classes[r].prev = classes[l].right; |
| 1515 | 1521 |
classes[classes[l].right].next = r; |
| 1516 | 1522 |
classes[l].right = r; |
| 1517 | 1523 |
classes[r].parent = l; |
| 1518 | 1524 |
|
| 1519 | 1525 |
classes[r].next = -1; |
| 1520 | 1526 |
classes[r].depth = rln; |
| 1521 | 1527 |
} |
| 1522 | 1528 |
} |
| 1523 | 1529 |
return class_id; |
| 1524 | 1530 |
} |
| 1525 | 1531 |
|
| 1526 | 1532 |
/// \brief Split the class to subclasses. |
| 1527 | 1533 |
/// |
| 1528 | 1534 |
/// The current function splits the given class. The join, which |
| 1529 | 1535 |
/// made the current class, stored a reference to the |
| 1530 | 1536 |
/// subclasses. The \c splitClass() member restores the classes |
| 1531 | 1537 |
/// and creates the heaps. The parameter is an STL output iterator |
| 1532 | 1538 |
/// which will be filled with the subclass ids. The time |
| 1533 | 1539 |
/// complexity is O(log(n)*k) where n is the overall number of |
| 1534 | 1540 |
/// nodes in the splitted classes and k is the number of the |
| 1535 | 1541 |
/// classes. |
| 1536 | 1542 |
template <typename Iterator> |
| 1537 | 1543 |
void split(int cls, Iterator out) {
|
| 1538 | 1544 |
std::vector<int> cs; |
| 1539 | 1545 |
{ // splitting union-find
|
| 1540 | 1546 |
int id = cls; |
| 1541 | 1547 |
int l = classes[id].left; |
| 1542 | 1548 |
|
| 1543 | 1549 |
classes[l].parent = classes[id].parent; |
| 1544 | 1550 |
classes[l].depth = classes[id].depth; |
| 1545 | 1551 |
|
| 1546 | 1552 |
nodes[~(classes[l].parent)].parent = ~l; |
| 1547 | 1553 |
|
| 1548 | 1554 |
*out++ = l; |
| 1549 | 1555 |
|
| 1550 | 1556 |
while (l != -1) {
|
| 1551 | 1557 |
cs.push_back(l); |
| 1552 | 1558 |
l = classes[l].next; |
| 1553 | 1559 |
} |
| 1554 | 1560 |
|
| 1555 | 1561 |
classes[classes[id].right].next = first_class; |
| 1556 | 1562 |
classes[first_class].prev = classes[id].right; |
| 1557 | 1563 |
first_class = classes[id].left; |
| 1558 | 1564 |
|
| 1559 | 1565 |
if (classes[id].next != -1) {
|
| 1560 | 1566 |
classes[classes[id].next].prev = classes[id].prev; |
| 1561 | 1567 |
} |
| 1562 | 1568 |
classes[classes[id].prev].next = classes[id].next; |
| 1563 | 1569 |
|
| 1564 | 1570 |
deleteClass(id); |
| 1565 | 1571 |
} |
| 1566 | 1572 |
|
| 1567 | 1573 |
{
|
| 1568 | 1574 |
for (int i = 1; i < int(cs.size()); ++i) {
|
| 1569 | 1575 |
int l = classes[cs[i]].depth; |
| 1570 | 1576 |
while (nodes[nodes[l].parent].left == l) {
|
| 1571 | 1577 |
l = nodes[l].parent; |
| 1572 | 1578 |
} |
| 1573 | 1579 |
int r = l; |
| 1574 | 1580 |
while (nodes[l].parent >= 0) {
|
| 1575 | 1581 |
l = nodes[l].parent; |
| 1576 | 1582 |
int new_node = newNode(); |
| 1577 | 1583 |
|
| 1578 | 1584 |
nodes[new_node].prev = -1; |
| 1579 | 1585 |
nodes[new_node].next = -1; |
| 1580 | 1586 |
|
| 1581 | 1587 |
split(r, new_node); |
| 1582 | 1588 |
pushAfter(l, new_node); |
| 1583 | 1589 |
setPrio(l); |
| 1584 | 1590 |
setPrio(new_node); |
| 1585 | 1591 |
r = new_node; |
| 1586 | 1592 |
} |
| 1587 | 1593 |
classes[cs[i]].parent = ~r; |
| 1588 | 1594 |
classes[cs[i]].depth = classes[~(nodes[l].parent)].depth; |
| 1589 | 1595 |
nodes[r].parent = ~cs[i]; |
| 1590 | 1596 |
|
| 1591 | 1597 |
nodes[l].next = -1; |
| 1592 | 1598 |
nodes[r].prev = -1; |
| 1593 | 1599 |
|
| 1594 | 1600 |
repairRight(~(nodes[l].parent)); |
| 1595 | 1601 |
repairLeft(cs[i]); |
| 1596 | 1602 |
|
| 1597 | 1603 |
*out++ = cs[i]; |
| 1598 | 1604 |
} |
| 1599 | 1605 |
} |
| 1600 | 1606 |
} |
| 1601 | 1607 |
|
| 1602 | 1608 |
/// \brief Gives back the priority of the current item. |
| 1603 | 1609 |
/// |
| 1604 |
/// |
|
| 1610 |
/// Gives back the priority of the current item. |
|
| 1605 | 1611 |
const Value& operator[](const Item& item) const {
|
| 1606 | 1612 |
return nodes[index[item]].prio; |
| 1607 | 1613 |
} |
| 1608 | 1614 |
|
| 1609 | 1615 |
/// \brief Sets the priority of the current item. |
| 1610 | 1616 |
/// |
| 1611 | 1617 |
/// Sets the priority of the current item. |
| 1612 | 1618 |
void set(const Item& item, const Value& prio) {
|
| 1613 | 1619 |
if (comp(prio, nodes[index[item]].prio)) {
|
| 1614 | 1620 |
decrease(item, prio); |
| 1615 | 1621 |
} else if (!comp(prio, nodes[index[item]].prio)) {
|
| 1616 | 1622 |
increase(item, prio); |
| 1617 | 1623 |
} |
| 1618 | 1624 |
} |
| 1619 | 1625 |
|
| 1620 | 1626 |
/// \brief Increase the priority of the current item. |
| 1621 | 1627 |
/// |
| 1622 | 1628 |
/// Increase the priority of the current item. |
| 1623 | 1629 |
void increase(const Item& item, const Value& prio) {
|
| 1624 | 1630 |
int id = index[item]; |
| 1625 | 1631 |
int kd = nodes[id].parent; |
| 1626 | 1632 |
nodes[id].prio = prio; |
| 1627 | 1633 |
while (kd >= 0 && nodes[kd].item == item) {
|
| 1628 | 1634 |
setPrio(kd); |
| 1629 | 1635 |
kd = nodes[kd].parent; |
| 1630 | 1636 |
} |
| 1631 | 1637 |
} |
| 1632 | 1638 |
|
| 1633 | 1639 |
/// \brief Increase the priority of the current item. |
| 1634 | 1640 |
/// |
| 1635 | 1641 |
/// Increase the priority of the current item. |
| 1636 | 1642 |
void decrease(const Item& item, const Value& prio) {
|
| 1637 | 1643 |
int id = index[item]; |
| 1638 | 1644 |
int kd = nodes[id].parent; |
| 1639 | 1645 |
nodes[id].prio = prio; |
| 1640 | 1646 |
while (kd >= 0 && less(id, kd)) {
|
| 1641 | 1647 |
nodes[kd].prio = prio; |
| 1642 | 1648 |
nodes[kd].item = item; |
| 1643 | 1649 |
kd = nodes[kd].parent; |
| 1644 | 1650 |
} |
| 1645 | 1651 |
} |
| 1646 | 1652 |
|
| 1647 | 1653 |
/// \brief Gives back the minimum priority of the class. |
| 1648 | 1654 |
/// |
| 1649 |
/// |
|
| 1655 |
/// Gives back the minimum priority of the class. |
|
| 1650 | 1656 |
const Value& classPrio(int cls) const {
|
| 1651 | 1657 |
return nodes[~(classes[cls].parent)].prio; |
| 1652 | 1658 |
} |
| 1653 | 1659 |
|
| 1654 | 1660 |
/// \brief Gives back the minimum priority item of the class. |
| 1655 | 1661 |
/// |
| 1656 | 1662 |
/// \return Gives back the minimum priority item of the class. |
| 1657 | 1663 |
const Item& classTop(int cls) const {
|
| 1658 | 1664 |
return nodes[~(classes[cls].parent)].item; |
| 1659 | 1665 |
} |
| 1660 | 1666 |
|
| 1661 | 1667 |
/// \brief Gives back a representant item of the class. |
| 1662 | 1668 |
/// |
| 1669 |
/// Gives back a representant item of the class. |
|
| 1663 | 1670 |
/// The representant is indpendent from the priorities of the |
| 1664 | 1671 |
/// items. |
| 1665 |
/// \return Gives back a representant item of the class. |
|
| 1666 | 1672 |
const Item& classRep(int id) const {
|
| 1667 | 1673 |
int parent = classes[id].parent; |
| 1668 | 1674 |
return nodes[parent >= 0 ? classes[id].depth : leftNode(id)].item; |
| 1669 | 1675 |
} |
| 1670 | 1676 |
|
| 1671 | 1677 |
/// \brief LEMON style iterator for the items of a class. |
| 1672 | 1678 |
/// |
| 1673 | 1679 |
/// ClassIt is a lemon style iterator for the components. It iterates |
| 1674 | 1680 |
/// on the items of a class. By example if you want to iterate on |
| 1675 | 1681 |
/// each items of each classes then you may write the next code. |
| 1676 | 1682 |
///\code |
| 1677 | 1683 |
/// for (ClassIt cit(huf); cit != INVALID; ++cit) {
|
| 1678 | 1684 |
/// std::cout << "Class: "; |
| 1679 | 1685 |
/// for (ItemIt iit(huf, cit); iit != INVALID; ++iit) {
|
| 1680 | 1686 |
/// std::cout << toString(iit) << ' ' << std::endl; |
| 1681 | 1687 |
/// } |
| 1682 | 1688 |
/// std::cout << std::endl; |
| 1683 | 1689 |
/// } |
| 1684 | 1690 |
///\endcode |
| 1685 | 1691 |
class ItemIt {
|
| 1686 | 1692 |
private: |
| 1687 | 1693 |
|
| 1688 | 1694 |
const HeapUnionFind* _huf; |
| 1689 | 1695 |
int _id, _lid; |
| 1690 | 1696 |
|
| 1691 | 1697 |
public: |
| 1692 | 1698 |
|
| 1693 | 1699 |
/// \brief Default constructor |
| 1694 | 1700 |
/// |
| 1695 | 1701 |
/// Default constructor |
| 1696 | 1702 |
ItemIt() {}
|
| 1697 | 1703 |
|
| 1698 | 1704 |
ItemIt(const HeapUnionFind& huf, int cls) : _huf(&huf) {
|
| 1699 | 1705 |
int id = cls; |
| 1700 | 1706 |
int parent = _huf->classes[id].parent; |
| 1701 | 1707 |
if (parent >= 0) {
|
| 1702 | 1708 |
_id = _huf->classes[id].depth; |
| 1703 | 1709 |
if (_huf->classes[id].next != -1) {
|
| 1704 | 1710 |
_lid = _huf->classes[_huf->classes[id].next].depth; |
| 1705 | 1711 |
} else {
|
| 1706 | 1712 |
_lid = -1; |
| 1707 | 1713 |
} |
| 1708 | 1714 |
} else {
|
| 1709 | 1715 |
_id = _huf->leftNode(id); |
| 1710 | 1716 |
_lid = -1; |
| 1711 | 1717 |
} |
| 1712 | 1718 |
} |
| 1713 | 1719 |
|
| 1714 | 1720 |
/// \brief Increment operator |
| 1715 | 1721 |
/// |
| 1716 | 1722 |
/// It steps to the next item in the class. |
| 1717 | 1723 |
ItemIt& operator++() {
|
| 1718 | 1724 |
_id = _huf->nextNode(_id); |
| 1719 | 1725 |
return *this; |
| 1720 | 1726 |
} |
| 1721 | 1727 |
|
| 1722 | 1728 |
/// \brief Conversion operator |
| 1723 | 1729 |
/// |
| 1724 | 1730 |
/// It converts the iterator to the current item. |
| 1725 | 1731 |
operator const Item&() const {
|
| 1726 | 1732 |
return _huf->nodes[_id].item; |
| 1727 | 1733 |
} |
| 1728 | 1734 |
|
| 1729 | 1735 |
/// \brief Equality operator |
| 1730 | 1736 |
/// |
| 1731 | 1737 |
/// Equality operator |
| 1732 | 1738 |
bool operator==(const ItemIt& i) {
|
| 1733 | 1739 |
return i._id == _id; |
| 1734 | 1740 |
} |
| 1735 | 1741 |
|
| 1736 | 1742 |
/// \brief Inequality operator |
| 1737 | 1743 |
/// |
| 1738 | 1744 |
/// Inequality operator |
| 1739 | 1745 |
bool operator!=(const ItemIt& i) {
|
| 1740 | 1746 |
return i._id != _id; |
| 1741 | 1747 |
} |
| 1742 | 1748 |
|
| 1743 | 1749 |
/// \brief Equality operator |
| 1744 | 1750 |
/// |
| 1745 | 1751 |
/// Equality operator |
| 1746 | 1752 |
bool operator==(Invalid) {
|
| 1747 | 1753 |
return _id == _lid; |
| 1748 | 1754 |
} |
| 1749 | 1755 |
|
| 1750 | 1756 |
/// \brief Inequality operator |
| 1751 | 1757 |
/// |
| 1752 | 1758 |
/// Inequality operator |
| 1753 | 1759 |
bool operator!=(Invalid) {
|
| 1754 | 1760 |
return _id != _lid; |
| 1755 | 1761 |
} |
| 1756 | 1762 |
|
| 1757 | 1763 |
}; |
| 1758 | 1764 |
|
| 1759 | 1765 |
/// \brief Class iterator |
| 1760 | 1766 |
/// |
| 1761 | 1767 |
/// The iterator stores |
| 1762 | 1768 |
class ClassIt {
|
| 1763 | 1769 |
private: |
| 1764 | 1770 |
|
| 1765 | 1771 |
const HeapUnionFind* _huf; |
| 1766 | 1772 |
int _id; |
| 1767 | 1773 |
|
| 1768 | 1774 |
public: |
| 1769 | 1775 |
|
| 1770 | 1776 |
ClassIt(const HeapUnionFind& huf) |
| 1771 | 1777 |
: _huf(&huf), _id(huf.first_class) {}
|
| 1772 | 1778 |
|
| 1773 | 1779 |
ClassIt(const HeapUnionFind& huf, int cls) |
| 1774 | 1780 |
: _huf(&huf), _id(huf.classes[cls].left) {}
|
| 1775 | 1781 |
|
| 1776 | 1782 |
ClassIt(Invalid) : _huf(0), _id(-1) {}
|
| 1777 | 1783 |
|
| 1778 | 1784 |
const ClassIt& operator++() {
|
| 1779 | 1785 |
_id = _huf->classes[_id].next; |
| 1780 | 1786 |
return *this; |
| 1781 | 1787 |
} |
| 1782 | 1788 |
|
| 1783 | 1789 |
/// \brief Equality operator |
| 1784 | 1790 |
/// |
| 1785 | 1791 |
/// Equality operator |
| 1786 | 1792 |
bool operator==(const ClassIt& i) {
|
| 1787 | 1793 |
return i._id == _id; |
| 1788 | 1794 |
} |
| 1789 | 1795 |
|
| 1790 | 1796 |
/// \brief Inequality operator |
| 1791 | 1797 |
/// |
| 1792 | 1798 |
/// Inequality operator |
| 1793 | 1799 |
bool operator!=(const ClassIt& i) {
|
| 1794 | 1800 |
return i._id != _id; |
| 1795 | 1801 |
} |
| 1796 | 1802 |
|
| 1797 | 1803 |
operator int() const {
|
| 1798 | 1804 |
return _id; |
| 1799 | 1805 |
} |
| 1800 | 1806 |
|
| 1801 | 1807 |
}; |
| 1802 | 1808 |
|
| 1803 | 1809 |
}; |
| 1804 | 1810 |
|
| 1805 | 1811 |
//! @} |
| 1806 | 1812 |
|
| 1807 | 1813 |
} //namespace lemon |
| 1808 | 1814 |
|
| 1809 | 1815 |
#endif //LEMON_UNION_FIND_H |
| 1 | 1 |
AC_DEFUN([LX_CHECK_CPLEX], |
| 2 | 2 |
[ |
| 3 | 3 |
AC_ARG_WITH([cplex], |
| 4 | 4 |
AS_HELP_STRING([--with-cplex@<:@=PREFIX@:>@], [search for CPLEX under PREFIX or under the default search paths if PREFIX is not given @<:@default@:>@]) |
| 5 | 5 |
AS_HELP_STRING([--without-cplex], [disable checking for CPLEX]), |
| 6 | 6 |
[], [with_cplex=yes]) |
| 7 | 7 |
|
| 8 | 8 |
AC_ARG_WITH([cplex-includedir], |
| 9 | 9 |
AS_HELP_STRING([--with-cplex-includedir=DIR], [search for CPLEX headers in DIR]), |
| 10 | 10 |
[], [with_cplex_includedir=no]) |
| 11 | 11 |
|
| 12 | 12 |
AC_ARG_WITH([cplex-libdir], |
| 13 | 13 |
AS_HELP_STRING([--with-cplex-libdir=DIR], [search for CPLEX libraries in DIR]), |
| 14 | 14 |
[], [with_cplex_libdir=no]) |
| 15 | 15 |
|
| 16 | 16 |
lx_cplex_found=no |
| 17 | 17 |
if test x"$with_cplex" != x"no"; then |
| 18 | 18 |
AC_MSG_CHECKING([for CPLEX]) |
| 19 | 19 |
|
| 20 | 20 |
if test x"$with_cplex_includedir" != x"no"; then |
| 21 | 21 |
CPLEX_CFLAGS="-I$with_cplex_includedir" |
| 22 | 22 |
elif test x"$with_cplex" != x"yes"; then |
| 23 | 23 |
CPLEX_CFLAGS="-I$with_cplex/include" |
| 24 | 24 |
elif test x"$CPLEX_INCLUDEDIR" != x; then |
| 25 | 25 |
CPLEX_CFLAGS="-I$CPLEX_INCLUDEDIR" |
| 26 | 26 |
fi |
| 27 | 27 |
|
| 28 | 28 |
if test x"$with_cplex_libdir" != x"no"; then |
| 29 | 29 |
CPLEX_LDFLAGS="-L$with_cplex_libdir" |
| 30 | 30 |
elif test x"$with_cplex" != x"yes"; then |
| 31 | 31 |
CPLEX_LDFLAGS="-L$with_cplex/lib" |
| 32 | 32 |
elif test x"$CPLEX_LIBDIR" != x; then |
| 33 | 33 |
CPLEX_LDFLAGS="-L$CPLEX_LIBDIR" |
| 34 | 34 |
fi |
| 35 | 35 |
CPLEX_LIBS="-lcplex -lm -lpthread" |
| 36 | 36 |
|
| 37 | 37 |
lx_save_cxxflags="$CXXFLAGS" |
| 38 | 38 |
lx_save_ldflags="$LDFLAGS" |
| 39 | 39 |
lx_save_libs="$LIBS" |
| 40 | 40 |
CXXFLAGS="$CPLEX_CFLAGS" |
| 41 | 41 |
LDFLAGS="$CPLEX_LDFLAGS" |
| 42 | 42 |
LIBS="$CPLEX_LIBS" |
| 43 | 43 |
|
| 44 | 44 |
lx_cplex_test_prog=' |
| 45 | 45 |
extern "C" {
|
| 46 | 46 |
#include <ilcplex/cplex.h> |
| 47 | 47 |
} |
| 48 | 48 |
|
| 49 | 49 |
int main(int argc, char** argv) |
| 50 | 50 |
{
|
| 51 | 51 |
CPXENVptr env = NULL; |
| 52 | 52 |
return 0; |
| 53 | 53 |
}' |
| 54 | 54 |
|
| 55 | 55 |
AC_LANG_PUSH(C++) |
| 56 | 56 |
AC_LINK_IFELSE([$lx_cplex_test_prog], [lx_cplex_found=yes], [lx_cplex_found=no]) |
| 57 | 57 |
AC_LANG_POP(C++) |
| 58 | 58 |
|
| 59 | 59 |
CXXFLAGS="$lx_save_cxxflags" |
| 60 | 60 |
LDFLAGS="$lx_save_ldflags" |
| 61 | 61 |
LIBS="$lx_save_libs" |
| 62 | 62 |
|
| 63 | 63 |
if test x"$lx_cplex_found" = x"yes"; then |
| 64 |
AC_DEFINE([ |
|
| 64 |
AC_DEFINE([LEMON_HAVE_CPLEX], [1], [Define to 1 if you have CPLEX.]) |
|
| 65 | 65 |
lx_lp_found=yes |
| 66 |
AC_DEFINE([ |
|
| 66 |
AC_DEFINE([LEMON_HAVE_LP], [1], [Define to 1 if you have any LP solver.]) |
|
| 67 | 67 |
lx_mip_found=yes |
| 68 |
AC_DEFINE([ |
|
| 68 |
AC_DEFINE([LEMON_HAVE_MIP], [1], [Define to 1 if you have any MIP solver.]) |
|
| 69 | 69 |
AC_MSG_RESULT([yes]) |
| 70 | 70 |
else |
| 71 | 71 |
CPLEX_CFLAGS="" |
| 72 | 72 |
CPLEX_LDFLAGS="" |
| 73 | 73 |
CPLEX_LIBS="" |
| 74 | 74 |
AC_MSG_RESULT([no]) |
| 75 | 75 |
fi |
| 76 | 76 |
fi |
| 77 | 77 |
CPLEX_LIBS="$CPLEX_LDFLAGS $CPLEX_LIBS" |
| 78 | 78 |
AC_SUBST(CPLEX_CFLAGS) |
| 79 | 79 |
AC_SUBST(CPLEX_LIBS) |
| 80 | 80 |
AM_CONDITIONAL([HAVE_CPLEX], [test x"$lx_cplex_found" = x"yes"]) |
| 81 | 81 |
]) |
| 1 | 1 |
AC_DEFUN([LX_CHECK_GLPK], |
| 2 | 2 |
[ |
| 3 | 3 |
AC_ARG_WITH([glpk], |
| 4 | 4 |
AS_HELP_STRING([--with-glpk@<:@=PREFIX@:>@], [search for GLPK under PREFIX or under the default search paths if PREFIX is not given @<:@default@:>@]) |
| 5 | 5 |
AS_HELP_STRING([--without-glpk], [disable checking for GLPK]), |
| 6 | 6 |
[], [with_glpk=yes]) |
| 7 | 7 |
|
| 8 | 8 |
AC_ARG_WITH([glpk-includedir], |
| 9 | 9 |
AS_HELP_STRING([--with-glpk-includedir=DIR], [search for GLPK headers in DIR]), |
| 10 | 10 |
[], [with_glpk_includedir=no]) |
| 11 | 11 |
|
| 12 | 12 |
AC_ARG_WITH([glpk-libdir], |
| 13 | 13 |
AS_HELP_STRING([--with-glpk-libdir=DIR], [search for GLPK libraries in DIR]), |
| 14 | 14 |
[], [with_glpk_libdir=no]) |
| 15 | 15 |
|
| 16 | 16 |
lx_glpk_found=no |
| 17 | 17 |
if test x"$with_glpk" != x"no"; then |
| 18 | 18 |
AC_MSG_CHECKING([for GLPK]) |
| 19 | 19 |
|
| 20 | 20 |
if test x"$with_glpk_includedir" != x"no"; then |
| 21 | 21 |
GLPK_CFLAGS="-I$with_glpk_includedir" |
| 22 | 22 |
elif test x"$with_glpk" != x"yes"; then |
| 23 | 23 |
GLPK_CFLAGS="-I$with_glpk/include" |
| 24 | 24 |
fi |
| 25 | 25 |
|
| 26 | 26 |
if test x"$with_glpk_libdir" != x"no"; then |
| 27 | 27 |
GLPK_LDFLAGS="-L$with_glpk_libdir" |
| 28 | 28 |
elif test x"$with_glpk" != x"yes"; then |
| 29 | 29 |
GLPK_LDFLAGS="-L$with_glpk/lib" |
| 30 | 30 |
fi |
| 31 | 31 |
GLPK_LIBS="-lglpk" |
| 32 | 32 |
|
| 33 | 33 |
lx_save_cxxflags="$CXXFLAGS" |
| 34 | 34 |
lx_save_ldflags="$LDFLAGS" |
| 35 | 35 |
lx_save_libs="$LIBS" |
| 36 | 36 |
CXXFLAGS="$GLPK_CFLAGS" |
| 37 | 37 |
LDFLAGS="$GLPK_LDFLAGS" |
| 38 | 38 |
LIBS="$GLPK_LIBS" |
| 39 | 39 |
|
| 40 | 40 |
lx_glpk_test_prog=' |
| 41 | 41 |
extern "C" {
|
| 42 | 42 |
#include <glpk.h> |
| 43 | 43 |
} |
| 44 | 44 |
|
| 45 | 45 |
#if (GLP_MAJOR_VERSION < 4) \ |
| 46 | 46 |
|| (GLP_MAJOR_VERSION == 4 && GLP_MINOR_VERSION < 33) |
| 47 | 47 |
#error Supported GLPK versions: 4.33 or above |
| 48 | 48 |
#endif |
| 49 | 49 |
|
| 50 | 50 |
int main(int argc, char** argv) |
| 51 | 51 |
{
|
| 52 | 52 |
LPX *lp; |
| 53 | 53 |
lp = lpx_create_prob(); |
| 54 | 54 |
lpx_delete_prob(lp); |
| 55 | 55 |
return 0; |
| 56 | 56 |
}' |
| 57 | 57 |
|
| 58 | 58 |
AC_LANG_PUSH(C++) |
| 59 | 59 |
AC_LINK_IFELSE([$lx_glpk_test_prog], [lx_glpk_found=yes], [lx_glpk_found=no]) |
| 60 | 60 |
AC_LANG_POP(C++) |
| 61 | 61 |
|
| 62 | 62 |
CXXFLAGS="$lx_save_cxxflags" |
| 63 | 63 |
LDFLAGS="$lx_save_ldflags" |
| 64 | 64 |
LIBS="$lx_save_libs" |
| 65 | 65 |
|
| 66 | 66 |
if test x"$lx_glpk_found" = x"yes"; then |
| 67 |
AC_DEFINE([ |
|
| 67 |
AC_DEFINE([LEMON_HAVE_GLPK], [1], [Define to 1 if you have GLPK.]) |
|
| 68 | 68 |
lx_lp_found=yes |
| 69 |
AC_DEFINE([ |
|
| 69 |
AC_DEFINE([LEMON_HAVE_LP], [1], [Define to 1 if you have any LP solver.]) |
|
| 70 | 70 |
lx_mip_found=yes |
| 71 |
AC_DEFINE([ |
|
| 71 |
AC_DEFINE([LEMON_HAVE_MIP], [1], [Define to 1 if you have any MIP solver.]) |
|
| 72 | 72 |
AC_MSG_RESULT([yes]) |
| 73 | 73 |
else |
| 74 | 74 |
GLPK_CFLAGS="" |
| 75 | 75 |
GLPK_LDFLAGS="" |
| 76 | 76 |
GLPK_LIBS="" |
| 77 | 77 |
AC_MSG_RESULT([no]) |
| 78 | 78 |
fi |
| 79 | 79 |
fi |
| 80 | 80 |
GLPK_LIBS="$GLPK_LDFLAGS $GLPK_LIBS" |
| 81 | 81 |
AC_SUBST(GLPK_CFLAGS) |
| 82 | 82 |
AC_SUBST(GLPK_LIBS) |
| 83 | 83 |
AM_CONDITIONAL([HAVE_GLPK], [test x"$lx_glpk_found" = x"yes"]) |
| 84 | 84 |
]) |
| 1 | 1 |
AC_DEFUN([LX_CHECK_SOPLEX], |
| 2 | 2 |
[ |
| 3 | 3 |
AC_ARG_WITH([soplex], |
| 4 | 4 |
AS_HELP_STRING([--with-soplex@<:@=PREFIX@:>@], [search for SOPLEX under PREFIX or under the default search paths if PREFIX is not given @<:@default@:>@]) |
| 5 | 5 |
AS_HELP_STRING([--without-soplex], [disable checking for SOPLEX]), |
| 6 | 6 |
[], [with_soplex=yes]) |
| 7 | 7 |
|
| 8 | 8 |
AC_ARG_WITH([soplex-includedir], |
| 9 | 9 |
AS_HELP_STRING([--with-soplex-includedir=DIR], [search for SOPLEX headers in DIR]), |
| 10 | 10 |
[], [with_soplex_includedir=no]) |
| 11 | 11 |
|
| 12 | 12 |
AC_ARG_WITH([soplex-libdir], |
| 13 | 13 |
AS_HELP_STRING([--with-soplex-libdir=DIR], [search for SOPLEX libraries in DIR]), |
| 14 | 14 |
[], [with_soplex_libdir=no]) |
| 15 | 15 |
|
| 16 | 16 |
lx_soplex_found=no |
| 17 | 17 |
if test x"$with_soplex" != x"no"; then |
| 18 | 18 |
AC_MSG_CHECKING([for SOPLEX]) |
| 19 | 19 |
|
| 20 | 20 |
if test x"$with_soplex_includedir" != x"no"; then |
| 21 | 21 |
SOPLEX_CXXFLAGS="-I$with_soplex_includedir" |
| 22 | 22 |
elif test x"$with_soplex" != x"yes"; then |
| 23 |
SOPLEX_CXXFLAGS="-I$with_soplex/ |
|
| 23 |
SOPLEX_CXXFLAGS="-I$with_soplex/src" |
|
| 24 | 24 |
fi |
| 25 | 25 |
|
| 26 | 26 |
if test x"$with_soplex_libdir" != x"no"; then |
| 27 | 27 |
SOPLEX_LDFLAGS="-L$with_soplex_libdir" |
| 28 | 28 |
elif test x"$with_soplex" != x"yes"; then |
| 29 | 29 |
SOPLEX_LDFLAGS="-L$with_soplex/lib" |
| 30 | 30 |
fi |
| 31 | 31 |
SOPLEX_LIBS="-lsoplex -lz" |
| 32 | 32 |
|
| 33 | 33 |
lx_save_cxxflags="$CXXFLAGS" |
| 34 | 34 |
lx_save_ldflags="$LDFLAGS" |
| 35 | 35 |
lx_save_libs="$LIBS" |
| 36 | 36 |
CXXFLAGS="$SOPLEX_CXXFLAGS" |
| 37 | 37 |
LDFLAGS="$SOPLEX_LDFLAGS" |
| 38 | 38 |
LIBS="$SOPLEX_LIBS" |
| 39 | 39 |
|
| 40 | 40 |
lx_soplex_test_prog=' |
| 41 |
#include <soplex |
|
| 41 |
#include <soplex.h> |
|
| 42 | 42 |
|
| 43 | 43 |
int main(int argc, char** argv) |
| 44 | 44 |
{
|
| 45 | 45 |
soplex::SoPlex soplex; |
| 46 | 46 |
return 0; |
| 47 | 47 |
}' |
| 48 | 48 |
|
| 49 | 49 |
AC_LANG_PUSH(C++) |
| 50 | 50 |
AC_LINK_IFELSE([$lx_soplex_test_prog], [lx_soplex_found=yes], [lx_soplex_found=no]) |
| 51 | 51 |
AC_LANG_POP(C++) |
| 52 | 52 |
|
| 53 | 53 |
CXXFLAGS="$lx_save_cxxflags" |
| 54 | 54 |
LDFLAGS="$lx_save_ldflags" |
| 55 | 55 |
LIBS="$lx_save_libs" |
| 56 | 56 |
|
| 57 | 57 |
if test x"$lx_soplex_found" = x"yes"; then |
| 58 |
AC_DEFINE([ |
|
| 58 |
AC_DEFINE([LEMON_HAVE_SOPLEX], [1], [Define to 1 if you have SOPLEX.]) |
|
| 59 | 59 |
lx_lp_found=yes |
| 60 |
AC_DEFINE([ |
|
| 60 |
AC_DEFINE([LEMON_HAVE_LP], [1], [Define to 1 if you have any LP solver.]) |
|
| 61 | 61 |
AC_MSG_RESULT([yes]) |
| 62 | 62 |
else |
| 63 | 63 |
SOPLEX_CXXFLAGS="" |
| 64 | 64 |
SOPLEX_LDFLAGS="" |
| 65 | 65 |
SOPLEX_LIBS="" |
| 66 | 66 |
AC_MSG_RESULT([no]) |
| 67 | 67 |
fi |
| 68 | 68 |
fi |
| 69 | 69 |
SOPLEX_LIBS="$SOPLEX_LDFLAGS $SOPLEX_LIBS" |
| 70 | 70 |
AC_SUBST(SOPLEX_CXXFLAGS) |
| 71 | 71 |
AC_SUBST(SOPLEX_LIBS) |
| 72 | 72 |
AM_CONDITIONAL([HAVE_SOPLEX], [test x"$lx_soplex_found" = x"yes"]) |
| 73 | 73 |
]) |
| 1 | 1 |
#! /usr/bin/env python |
| 2 |
# |
|
| 3 |
# This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
# |
|
| 5 |
# Copyright (C) 2003-2009 |
|
| 6 |
# Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
# (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
# |
|
| 9 |
# Permission to use, modify and distribute this software is granted |
|
| 10 |
# provided that this copyright notice appears in all copies. For |
|
| 11 |
# precise terms see the accompanying LICENSE file. |
|
| 12 |
# |
|
| 13 |
# This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
# express or implied, and with no claim as to its suitability for any |
|
| 15 |
# purpose. |
|
| 2 | 16 |
|
| 3 | 17 |
import sys |
| 4 | 18 |
|
| 5 | 19 |
from mercurial import ui, hg |
| 6 | 20 |
from mercurial import util |
| 7 | 21 |
|
| 8 | 22 |
util.rcpath = lambda : [] |
| 9 | 23 |
|
| 10 | 24 |
if len(sys.argv)>1 and sys.argv[1] in ["-h","--help"]: |
| 11 | 25 |
print """ |
| 12 | 26 |
This utility just prints the length of the longest path |
| 13 | 27 |
in the revision graph from revison 0 to the current one. |
| 14 | 28 |
""" |
| 15 | 29 |
exit(0) |
| 16 | 30 |
|
| 17 | 31 |
u = ui.ui() |
| 18 | 32 |
r = hg.repository(u, ".") |
| 19 | 33 |
N = r.changectx(".").rev()
|
| 20 | 34 |
lengths=[0]*(N+1) |
| 21 | 35 |
for i in range(N+1): |
| 22 | 36 |
p=r.changectx(i).parents() |
| 23 | 37 |
if p[0]: |
| 24 | 38 |
p0=lengths[p[0].rev()] |
| 25 | 39 |
else: |
| 26 | 40 |
p0=-1 |
| 27 | 41 |
if len(p)>1 and p[1]: |
| 28 | 42 |
p1=lengths[p[1].rev()] |
| 29 | 43 |
else: |
| 30 | 44 |
p1=-1 |
| 31 | 45 |
lengths[i]=max(p0,p1)+1 |
| 32 | 46 |
print lengths[N] |
| 1 | 1 |
#!/bin/bash |
| 2 |
# |
|
| 3 |
# This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
# |
|
| 5 |
# Copyright (C) 2003-2009 |
|
| 6 |
# Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
# (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
# |
|
| 9 |
# Permission to use, modify and distribute this software is granted |
|
| 10 |
# provided that this copyright notice appears in all copies. For |
|
| 11 |
# precise terms see the accompanying LICENSE file. |
|
| 12 |
# |
|
| 13 |
# This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
# express or implied, and with no claim as to its suitability for any |
|
| 15 |
# purpose. |
|
| 2 | 16 |
|
| 3 |
YEAR=`date + |
|
| 17 |
YEAR=`date +%Y` |
|
| 4 | 18 |
HGROOT=`hg root` |
| 5 | 19 |
|
| 20 |
function hg_year() {
|
|
| 21 |
if [ -n "$(hg st $1)" ]; then |
|
| 22 |
echo $YEAR |
|
| 23 |
else |
|
| 24 |
hg log -l 1 --template='{date|isodate}\n' $1 |
|
|
| 25 |
cut -d '-' -f 1 |
|
| 26 |
fi |
|
| 27 |
} |
|
| 28 |
|
|
| 6 | 29 |
# file enumaration modes |
| 7 | 30 |
|
| 8 | 31 |
function all_files() {
|
| 9 | 32 |
hg status -a -m -c | |
| 10 | 33 |
cut -d ' ' -f 2 | grep -E '(\.(cc|h|dox)$|Makefile\.am$)' | |
| 11 | 34 |
while read file; do echo $HGROOT/$file; done |
| 12 | 35 |
} |
| 13 | 36 |
|
| 14 | 37 |
function modified_files() {
|
| 15 | 38 |
hg status -a -m | |
| 16 | 39 |
cut -d ' ' -f 2 | grep -E '(\.(cc|h|dox)$|Makefile\.am$)' | |
| 17 | 40 |
while read file; do echo $HGROOT/$file; done |
| 18 | 41 |
} |
| 19 | 42 |
|
| 20 | 43 |
function changed_files() {
|
| 21 | 44 |
{
|
| 22 | 45 |
if [ -n "$HG_PARENT1" ] |
| 23 | 46 |
then |
| 24 | 47 |
hg status --rev $HG_PARENT1:$HG_NODE -a -m |
| 25 | 48 |
fi |
| 26 | 49 |
if [ -n "$HG_PARENT2" ] |
| 27 | 50 |
then |
| 28 | 51 |
hg status --rev $HG_PARENT2:$HG_NODE -a -m |
| 29 | 52 |
fi |
| 30 | 53 |
} | cut -d ' ' -f 2 | grep -E '(\.(cc|h|dox)$|Makefile\.am$)' | |
| 31 | 54 |
sort | uniq | |
| 32 | 55 |
while read file; do echo $HGROOT/$file; done |
| 33 | 56 |
} |
| 34 | 57 |
|
| 35 | 58 |
function given_files() {
|
| 36 | 59 |
for file in $GIVEN_FILES |
| 37 | 60 |
do |
| 38 | 61 |
echo $file |
| 39 | 62 |
done |
| 40 | 63 |
} |
| 41 | 64 |
|
| 42 | 65 |
# actions |
| 43 | 66 |
|
| 44 | 67 |
function update_action() {
|
| 45 | 68 |
if ! diff -q $1 $2 >/dev/null |
| 46 | 69 |
then |
| 47 | 70 |
echo -n " [$3 updated]" |
| 48 | 71 |
rm $2 |
| 49 | 72 |
mv $1 $2 |
| 50 | 73 |
CHANGED=YES |
| 51 | 74 |
fi |
| 52 | 75 |
} |
| 53 | 76 |
|
| 54 | 77 |
function update_warning() {
|
| 55 | 78 |
echo -n " [$2 warning]" |
| 56 | 79 |
WARNED=YES |
| 57 | 80 |
} |
| 58 | 81 |
|
| 59 | 82 |
function update_init() {
|
| 60 | 83 |
echo Update source files... |
| 61 | 84 |
TOTAL_FILES=0 |
| 62 | 85 |
CHANGED_FILES=0 |
| 63 | 86 |
WARNED_FILES=0 |
| 64 | 87 |
} |
| 65 | 88 |
|
| 66 | 89 |
function update_done() {
|
| 67 | 90 |
echo $CHANGED_FILES out of $TOTAL_FILES files has been changed. |
| 68 | 91 |
echo $WARNED_FILES out of $TOTAL_FILES files triggered warnings. |
| 69 | 92 |
} |
| 70 | 93 |
|
| 71 | 94 |
function update_begin() {
|
| 72 | 95 |
((TOTAL_FILES++)) |
| 73 | 96 |
CHANGED=NO |
| 74 | 97 |
WARNED=NO |
| 75 | 98 |
} |
| 76 | 99 |
|
| 77 | 100 |
function update_end() {
|
| 78 | 101 |
if [ $CHANGED == YES ] |
| 79 | 102 |
then |
| 80 | 103 |
((++CHANGED_FILES)) |
| 81 | 104 |
fi |
| 82 | 105 |
if [ $WARNED == YES ] |
| 83 | 106 |
then |
| 84 | 107 |
((++WARNED_FILES)) |
| 85 | 108 |
fi |
| 86 | 109 |
} |
| 87 | 110 |
|
| 88 | 111 |
function check_action() {
|
| 89 | 112 |
if [ "$3" == 'tabs' ] |
| 90 | 113 |
then |
| 91 |
|
|
| 114 |
if echo $2 | grep -q -v -E 'Makefile\.am$' |
|
| 115 |
then |
|
| 116 |
PATTERN=$(echo -e '\t') |
|
| 117 |
else |
|
| 118 |
PATTERN=' ' |
|
| 119 |
fi |
|
| 92 | 120 |
elif [ "$3" == 'trailing spaces' ] |
| 93 | 121 |
then |
| 94 | 122 |
PATTERN='\ +$' |
| 95 | 123 |
else |
| 96 | 124 |
PATTERN='*' |
| 97 | 125 |
fi |
| 98 | 126 |
|
| 99 | 127 |
if ! diff -q $1 $2 >/dev/null |
| 100 | 128 |
then |
| 101 | 129 |
if [ "$PATTERN" == '*' ] |
| 102 | 130 |
then |
| 103 | 131 |
diff $1 $2 | grep '^[0-9]' | sed "s|^\(.*\)c.*$|$2:\1: check failed: $3|g" | |
| 104 | 132 |
sed "s/:\([0-9]*\),\([0-9]*\):\(.*\)$/:\1:\3 (until line \2)/g" |
| 105 | 133 |
else |
| 106 | 134 |
grep -n -E "$PATTERN" $2 | sed "s|^\([0-9]*\):.*$|$2:\1: check failed: $3|g" |
| 107 | 135 |
fi |
| 108 | 136 |
FAILED=YES |
| 109 | 137 |
fi |
| 110 | 138 |
} |
| 111 | 139 |
|
| 112 | 140 |
function check_warning() {
|
| 113 | 141 |
if [ "$2" == 'long lines' ] |
| 114 | 142 |
then |
| 115 | 143 |
grep -n -E '.{81,}' $1 | sed "s|^\([0-9]*\):.*$|$1:\1: warning: $2|g"
|
| 116 | 144 |
else |
| 117 | 145 |
echo "$1: warning: $2" |
| 118 | 146 |
fi |
| 119 | 147 |
WARNED=YES |
| 120 | 148 |
} |
| 121 | 149 |
|
| 122 | 150 |
function check_init() {
|
| 123 | 151 |
echo Check source files... |
| 124 | 152 |
FAILED_FILES=0 |
| 125 | 153 |
WARNED_FILES=0 |
| 126 | 154 |
TOTAL_FILES=0 |
| 127 | 155 |
} |
| 128 | 156 |
|
| 129 | 157 |
function check_done() {
|
| 130 | 158 |
echo $FAILED_FILES out of $TOTAL_FILES files has been failed. |
| 131 | 159 |
echo $WARNED_FILES out of $TOTAL_FILES files triggered warnings. |
| 132 | 160 |
|
| 133 | 161 |
if [ $WARNED_FILES -gt 0 -o $FAILED_FILES -gt 0 ] |
| 134 | 162 |
then |
| 135 | 163 |
if [ "$WARNING" == 'INTERACTIVE' ] |
| 136 | 164 |
then |
| 137 | 165 |
echo -n "Are the files with errors/warnings acceptable? (yes/no) " |
| 138 | 166 |
while read answer |
| 139 | 167 |
do |
| 140 | 168 |
if [ "$answer" == 'yes' ] |
| 141 | 169 |
then |
| 142 | 170 |
return 0 |
| 143 | 171 |
elif [ "$answer" == 'no' ] |
| 144 | 172 |
then |
| 145 | 173 |
return 1 |
| 146 | 174 |
fi |
| 147 | 175 |
echo -n "Are the files with errors/warnings acceptable? (yes/no) " |
| 148 | 176 |
done |
| 149 | 177 |
elif [ "$WARNING" == 'WERROR' ] |
| 150 | 178 |
then |
| 151 | 179 |
return 1 |
| 152 | 180 |
fi |
| 153 | 181 |
fi |
| 154 | 182 |
} |
| 155 | 183 |
|
| 156 | 184 |
function check_begin() {
|
| 157 | 185 |
((TOTAL_FILES++)) |
| 158 | 186 |
FAILED=NO |
| 159 | 187 |
WARNED=NO |
| 160 | 188 |
} |
| 161 | 189 |
|
| 162 | 190 |
function check_end() {
|
| 163 | 191 |
if [ $FAILED == YES ] |
| 164 | 192 |
then |
| 165 | 193 |
((++FAILED_FILES)) |
| 166 | 194 |
fi |
| 167 | 195 |
if [ $WARNED == YES ] |
| 168 | 196 |
then |
| 169 | 197 |
((++WARNED_FILES)) |
| 170 | 198 |
fi |
| 171 | 199 |
} |
| 172 | 200 |
|
| 173 | 201 |
|
| 174 | 202 |
|
| 175 | 203 |
# checks |
| 176 | 204 |
|
| 177 | 205 |
function header_check() {
|
| 178 | 206 |
if echo $1 | grep -q -E 'Makefile\.am$' |
| 179 | 207 |
then |
| 180 | 208 |
return |
| 181 | 209 |
fi |
| 182 | 210 |
|
| 183 | 211 |
TMP_FILE=`mktemp` |
| 184 | 212 |
|
| 185 | 213 |
(echo "/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 186 | 214 |
* |
| 187 | 215 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 188 | 216 |
* |
| 189 |
* Copyright (C) "$ |
|
| 217 |
* Copyright (C) 2003-"$(hg_year $1)" |
|
| 190 | 218 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 191 | 219 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 192 | 220 |
* |
| 193 | 221 |
* Permission to use, modify and distribute this software is granted |
| 194 | 222 |
* provided that this copyright notice appears in all copies. For |
| 195 | 223 |
* precise terms see the accompanying LICENSE file. |
| 196 | 224 |
* |
| 197 | 225 |
* This software is provided \"AS IS\" with no warranty of any kind, |
| 198 | 226 |
* express or implied, and with no claim as to its suitability for any |
| 199 | 227 |
* purpose. |
| 200 | 228 |
* |
| 201 | 229 |
*/ |
| 202 | 230 |
" |
| 203 | 231 |
awk 'BEGIN { pm=0; }
|
| 204 | 232 |
pm==3 { print }
|
| 205 | 233 |
/\/\* / && pm==0 { pm=1;}
|
| 206 | 234 |
/[^:blank:]/ && (pm==0 || pm==2) { pm=3; print;}
|
| 207 | 235 |
/\*\// && pm==1 { pm=2;}
|
| 208 | 236 |
' $1 |
| 209 | 237 |
) >$TMP_FILE |
| 210 | 238 |
|
| 211 | 239 |
"$ACTION"_action "$TMP_FILE" "$1" header |
| 212 | 240 |
} |
| 213 | 241 |
|
| 214 | 242 |
function tabs_check() {
|
| 215 | 243 |
if echo $1 | grep -q -v -E 'Makefile\.am$' |
| 216 | 244 |
then |
| 217 | 245 |
OLD_PATTERN=$(echo -e '\t') |
| 218 | 246 |
NEW_PATTERN=' ' |
| 219 | 247 |
else |
| 220 | 248 |
OLD_PATTERN=' ' |
| 221 | 249 |
NEW_PATTERN=$(echo -e '\t') |
| 222 | 250 |
fi |
| 223 | 251 |
TMP_FILE=`mktemp` |
| 224 | 252 |
cat $1 | sed -e "s/$OLD_PATTERN/$NEW_PATTERN/g" >$TMP_FILE |
| 225 | 253 |
|
| 226 | 254 |
"$ACTION"_action "$TMP_FILE" "$1" 'tabs' |
| 227 | 255 |
} |
| 228 | 256 |
|
| 229 | 257 |
function spaces_check() {
|
| 230 | 258 |
TMP_FILE=`mktemp` |
| 231 | 259 |
cat $1 | sed -e 's/ \+$//g' >$TMP_FILE |
| 232 | 260 |
|
| 233 | 261 |
"$ACTION"_action "$TMP_FILE" "$1" 'trailing spaces' |
| 234 | 262 |
} |
| 235 | 263 |
|
| 236 | 264 |
function long_lines_check() {
|
| 237 | 265 |
if cat $1 | grep -q -E '.{81,}'
|
| 238 | 266 |
then |
| 239 | 267 |
"$ACTION"_warning $1 'long lines' |
| 240 | 268 |
fi |
| 241 | 269 |
} |
| 242 | 270 |
|
| 243 | 271 |
# process the file |
| 244 | 272 |
|
| 245 | 273 |
function process_file() {
|
| 246 | 274 |
if [ "$ACTION" == 'update' ] |
| 247 | 275 |
then |
| 248 | 276 |
echo -n " $ACTION $1..." |
| 249 | 277 |
else |
| 250 | 278 |
echo " $ACTION $1..." |
| 251 | 279 |
fi |
| 252 | 280 |
|
| 253 | 281 |
CHECKING="header tabs spaces long_lines" |
| 254 | 282 |
|
| 255 | 283 |
"$ACTION"_begin $1 |
| 256 | 284 |
for check in $CHECKING |
| 257 | 285 |
do |
| 258 | 286 |
"$check"_check $1 |
| 259 | 287 |
done |
| 260 | 288 |
"$ACTION"_end $1 |
| 261 | 289 |
if [ "$ACTION" == 'update' ] |
| 262 | 290 |
then |
| 263 | 291 |
echo |
| 264 | 292 |
fi |
| 265 | 293 |
} |
| 266 | 294 |
|
| 267 | 295 |
function process_all {
|
| 268 | 296 |
"$ACTION"_init |
| 269 | 297 |
while read file |
| 270 | 298 |
do |
| 271 | 299 |
process_file $file |
| 272 | 300 |
done < <($FILES) |
| 273 | 301 |
"$ACTION"_done |
| 274 | 302 |
} |
| 275 | 303 |
|
| 276 | 304 |
while [ $# -gt 0 ] |
| 277 | 305 |
do |
| 278 | 306 |
|
| 279 | 307 |
if [ "$1" == '--help' ] || [ "$1" == '-h' ] |
| 280 | 308 |
then |
| 281 | 309 |
echo -n \ |
| 282 | 310 |
"Usage: |
| 283 | 311 |
$0 [OPTIONS] [files] |
| 284 | 312 |
Options: |
| 285 | 313 |
--dry-run|-n |
| 286 | 314 |
Check the files, but do not modify them. |
| 287 | 315 |
--interactive|-i |
| 288 | 316 |
If --dry-run is specified and the checker emits warnings, |
| 289 | 317 |
then the user is asked if the warnings should be considered |
| 290 | 318 |
errors. |
| 291 | 319 |
--werror|-w |
| 292 | 320 |
Make all warnings into errors. |
| 293 | 321 |
--all|-a |
| 294 | 322 |
Check all source files in the repository. |
| 295 | 323 |
--modified|-m |
| 296 | 324 |
Check only the modified (and new) source files. This option is |
| 297 | 325 |
useful to check the modification before making a commit. |
| 298 | 326 |
--changed|-c |
| 299 | 327 |
Check only the changed source files compared to the parent(s) of |
| 300 | 328 |
the current hg node. This option is useful as hg hook script. |
| 301 | 329 |
To automatically check all your changes before making a commit, |
| 302 | 330 |
add the following section to the appropriate .hg/hgrc file. |
| 303 | 331 |
|
| 304 | 332 |
[hooks] |
| 305 | 333 |
pretxncommit.checksources = scripts/unify-sources.sh -c -n -i |
| 306 | 334 |
|
| 307 | 335 |
--help|-h |
| 308 | 336 |
Print this help message. |
| 309 | 337 |
files |
| 310 | 338 |
The files to check/unify. If no file names are given, the modified |
| 311 | 339 |
source files will be checked/unified (just like using the |
| 312 | 340 |
--modified|-m option). |
| 313 | 341 |
" |
| 314 | 342 |
exit 0 |
| 315 | 343 |
elif [ "$1" == '--dry-run' ] || [ "$1" == '-n' ] |
| 316 | 344 |
then |
| 317 | 345 |
[ -n "$ACTION" ] && echo "Conflicting action options" >&2 && exit 1 |
| 318 | 346 |
ACTION=check |
| 319 | 347 |
elif [ "$1" == "--all" ] || [ "$1" == '-a' ] |
| 320 | 348 |
then |
| 321 | 349 |
[ -n "$FILES" ] && echo "Conflicting target options" >&2 && exit 1 |
| 322 | 350 |
FILES=all_files |
| 323 | 351 |
elif [ "$1" == "--changed" ] || [ "$1" == '-c' ] |
| 324 | 352 |
then |
| 325 | 353 |
[ -n "$FILES" ] && echo "Conflicting target options" >&2 && exit 1 |
| 326 | 354 |
FILES=changed_files |
| 327 | 355 |
elif [ "$1" == "--modified" ] || [ "$1" == '-m' ] |
| 328 | 356 |
then |
| 329 | 357 |
[ -n "$FILES" ] && echo "Conflicting target options" >&2 && exit 1 |
| 330 | 358 |
FILES=modified_files |
| 331 | 359 |
elif [ "$1" == "--interactive" ] || [ "$1" == "-i" ] |
| 332 | 360 |
then |
| 333 | 361 |
[ -n "$WARNING" ] && echo "Conflicting warning options" >&2 && exit 1 |
| 334 | 362 |
WARNING='INTERACTIVE' |
| 335 | 363 |
elif [ "$1" == "--werror" ] || [ "$1" == "-w" ] |
| 336 | 364 |
then |
| 337 | 365 |
[ -n "$WARNING" ] && echo "Conflicting warning options" >&2 && exit 1 |
| 338 | 366 |
WARNING='WERROR' |
| 339 | 367 |
elif [ $(echo x$1 | cut -c 2) == '-' ] |
| 340 | 368 |
then |
| 341 | 369 |
echo "Invalid option $1" >&2 && exit 1 |
| 342 | 370 |
else |
| 343 | 371 |
[ -n "$FILES" ] && echo "Invalid option $1" >&2 && exit 1 |
| 344 | 372 |
GIVEN_FILES=$@ |
| 345 | 373 |
FILES=given_files |
| 346 | 374 |
break |
| 347 | 375 |
fi |
| 348 | 376 |
|
| 349 | 377 |
shift |
| 350 | 378 |
done |
| 351 | 379 |
|
| 352 | 380 |
if [ -z $FILES ] |
| 353 | 381 |
then |
| 354 | 382 |
FILES=modified_files |
| 355 | 383 |
fi |
| 356 | 384 |
|
| 357 | 385 |
if [ -z $ACTION ] |
| 358 | 386 |
then |
| 359 | 387 |
ACTION=update |
| 360 | 388 |
fi |
| 361 | 389 |
|
| 362 | 390 |
process_all |
| 1 |
INCLUDE_DIRECTORIES( |
|
| 1 |
INCLUDE_DIRECTORIES( |
|
| 2 |
${PROJECT_SOURCE_DIR}
|
|
| 3 |
${PROJECT_BINARY_DIR}
|
|
| 4 |
) |
|
| 2 | 5 |
|
| 3 |
LINK_DIRECTORIES( |
|
| 6 |
LINK_DIRECTORIES( |
|
| 7 |
${PROJECT_BINARY_DIR}/lemon
|
|
| 8 |
) |
|
| 4 | 9 |
|
| 5 | 10 |
SET(TESTS |
| 6 | 11 |
adaptors_test |
| 12 |
bellman_ford_test |
|
| 7 | 13 |
bfs_test |
| 8 | 14 |
circulation_test |
| 15 |
connectivity_test |
|
| 9 | 16 |
counter_test |
| 10 | 17 |
dfs_test |
| 11 | 18 |
digraph_test |
| 12 | 19 |
dijkstra_test |
| 13 | 20 |
dim_test |
| 21 |
edge_set_test |
|
| 14 | 22 |
error_test |
| 15 |
|
|
| 23 |
euler_test |
|
| 24 |
gomory_hu_test |
|
| 16 | 25 |
graph_copy_test |
| 17 | 26 |
graph_test |
| 18 | 27 |
graph_utils_test |
| 19 | 28 |
hao_orlin_test |
| 20 | 29 |
heap_test |
| 21 | 30 |
kruskal_test |
| 22 |
lp_test |
|
| 23 |
mip_test |
|
| 24 | 31 |
maps_test |
| 25 |
max_matching_test |
|
| 26 |
radix_sort_test |
|
| 32 |
matching_test |
|
| 33 |
min_cost_arborescence_test |
|
| 34 |
min_cost_flow_test |
|
| 35 |
min_mean_cycle_test |
|
| 27 | 36 |
path_test |
| 28 | 37 |
preflow_test |
| 38 |
radix_sort_test |
|
| 29 | 39 |
random_test |
| 30 | 40 |
suurballe_test |
| 31 | 41 |
time_measure_test |
| 32 |
unionfind_test |
|
| 42 |
unionfind_test |
|
| 43 |
) |
|
| 44 |
|
|
| 45 |
IF(LEMON_HAVE_LP) |
|
| 46 |
ADD_EXECUTABLE(lp_test lp_test.cc) |
|
| 47 |
SET(LP_TEST_LIBS lemon) |
|
| 48 |
|
|
| 49 |
IF(LEMON_HAVE_GLPK) |
|
| 50 |
SET(LP_TEST_LIBS ${LP_TEST_LIBS} ${GLPK_LIBRARIES})
|
|
| 51 |
ENDIF() |
|
| 52 |
IF(LEMON_HAVE_CPLEX) |
|
| 53 |
SET(LP_TEST_LIBS ${LP_TEST_LIBS} ${CPLEX_LIBRARIES})
|
|
| 54 |
ENDIF() |
|
| 55 |
IF(LEMON_HAVE_CLP) |
|
| 56 |
SET(LP_TEST_LIBS ${LP_TEST_LIBS} ${COIN_CLP_LIBRARIES})
|
|
| 57 |
ENDIF() |
|
| 58 |
|
|
| 59 |
TARGET_LINK_LIBRARIES(lp_test ${LP_TEST_LIBS})
|
|
| 60 |
ADD_TEST(lp_test lp_test) |
|
| 61 |
|
|
| 62 |
IF(WIN32 AND LEMON_HAVE_GLPK) |
|
| 63 |
GET_TARGET_PROPERTY(TARGET_LOC lp_test LOCATION) |
|
| 64 |
GET_FILENAME_COMPONENT(TARGET_PATH ${TARGET_LOC} PATH)
|
|
| 65 |
ADD_CUSTOM_COMMAND(TARGET lp_test POST_BUILD |
|
| 66 |
COMMAND ${CMAKE_COMMAND} -E copy ${GLPK_BIN_DIR}/glpk.dll ${TARGET_PATH}
|
|
| 67 |
COMMAND ${CMAKE_COMMAND} -E copy ${GLPK_BIN_DIR}/libltdl3.dll ${TARGET_PATH}
|
|
| 68 |
COMMAND ${CMAKE_COMMAND} -E copy ${GLPK_BIN_DIR}/zlib1.dll ${TARGET_PATH}
|
|
| 69 |
) |
|
| 70 |
ENDIF() |
|
| 71 |
|
|
| 72 |
IF(WIN32 AND LEMON_HAVE_CPLEX) |
|
| 73 |
GET_TARGET_PROPERTY(TARGET_LOC lp_test LOCATION) |
|
| 74 |
GET_FILENAME_COMPONENT(TARGET_PATH ${TARGET_LOC} PATH)
|
|
| 75 |
ADD_CUSTOM_COMMAND(TARGET lp_test POST_BUILD |
|
| 76 |
COMMAND ${CMAKE_COMMAND} -E copy ${CPLEX_BIN_DIR}/cplex91.dll ${TARGET_PATH}
|
|
| 77 |
) |
|
| 78 |
ENDIF() |
|
| 79 |
ENDIF() |
|
| 80 |
|
|
| 81 |
IF(LEMON_HAVE_MIP) |
|
| 82 |
ADD_EXECUTABLE(mip_test mip_test.cc) |
|
| 83 |
SET(MIP_TEST_LIBS lemon) |
|
| 84 |
|
|
| 85 |
IF(LEMON_HAVE_GLPK) |
|
| 86 |
SET(MIP_TEST_LIBS ${MIP_TEST_LIBS} ${GLPK_LIBRARIES})
|
|
| 87 |
ENDIF() |
|
| 88 |
IF(LEMON_HAVE_CPLEX) |
|
| 89 |
SET(MIP_TEST_LIBS ${MIP_TEST_LIBS} ${CPLEX_LIBRARIES})
|
|
| 90 |
ENDIF() |
|
| 91 |
IF(LEMON_HAVE_CBC) |
|
| 92 |
SET(MIP_TEST_LIBS ${MIP_TEST_LIBS} ${COIN_CBC_LIBRARIES})
|
|
| 93 |
ENDIF() |
|
| 94 |
|
|
| 95 |
TARGET_LINK_LIBRARIES(mip_test ${MIP_TEST_LIBS})
|
|
| 96 |
ADD_TEST(mip_test mip_test) |
|
| 97 |
|
|
| 98 |
IF(WIN32 AND LEMON_HAVE_GLPK) |
|
| 99 |
GET_TARGET_PROPERTY(TARGET_LOC mip_test LOCATION) |
|
| 100 |
GET_FILENAME_COMPONENT(TARGET_PATH ${TARGET_LOC} PATH)
|
|
| 101 |
ADD_CUSTOM_COMMAND(TARGET mip_test POST_BUILD |
|
| 102 |
COMMAND ${CMAKE_COMMAND} -E copy ${GLPK_BIN_DIR}/glpk.dll ${TARGET_PATH}
|
|
| 103 |
COMMAND ${CMAKE_COMMAND} -E copy ${GLPK_BIN_DIR}/libltdl3.dll ${TARGET_PATH}
|
|
| 104 |
COMMAND ${CMAKE_COMMAND} -E copy ${GLPK_BIN_DIR}/zlib1.dll ${TARGET_PATH}
|
|
| 105 |
) |
|
| 106 |
ENDIF() |
|
| 107 |
|
|
| 108 |
IF(WIN32 AND LEMON_HAVE_CPLEX) |
|
| 109 |
GET_TARGET_PROPERTY(TARGET_LOC mip_test LOCATION) |
|
| 110 |
GET_FILENAME_COMPONENT(TARGET_PATH ${TARGET_LOC} PATH)
|
|
| 111 |
ADD_CUSTOM_COMMAND(TARGET mip_test POST_BUILD |
|
| 112 |
COMMAND ${CMAKE_COMMAND} -E copy ${CPLEX_BIN_DIR}/cplex91.dll ${TARGET_PATH}
|
|
| 113 |
) |
|
| 114 |
ENDIF() |
|
| 115 |
ENDIF() |
|
| 33 | 116 |
|
| 34 | 117 |
FOREACH(TEST_NAME ${TESTS})
|
| 35 | 118 |
ADD_EXECUTABLE(${TEST_NAME} ${TEST_NAME}.cc)
|
| 36 | 119 |
TARGET_LINK_LIBRARIES(${TEST_NAME} lemon)
|
| 37 | 120 |
ADD_TEST(${TEST_NAME} ${TEST_NAME})
|
| 38 |
ENDFOREACH( |
|
| 121 |
ENDFOREACH() |
| 1 | 1 |
EXTRA_DIST += \ |
| 2 | 2 |
test/CMakeLists.txt |
| 3 | 3 |
|
| 4 | 4 |
noinst_HEADERS += \ |
| 5 | 5 |
test/graph_test.h \ |
| 6 | 6 |
test/test_tools.h |
| 7 | 7 |
|
| 8 | 8 |
check_PROGRAMS += \ |
| 9 | 9 |
test/adaptors_test \ |
| 10 |
test/bellman_ford_test \ |
|
| 10 | 11 |
test/bfs_test \ |
| 11 | 12 |
test/circulation_test \ |
| 13 |
test/connectivity_test \ |
|
| 12 | 14 |
test/counter_test \ |
| 13 | 15 |
test/dfs_test \ |
| 14 | 16 |
test/digraph_test \ |
| 15 | 17 |
test/dijkstra_test \ |
| 16 | 18 |
test/dim_test \ |
| 17 | 19 |
test/edge_set_test \ |
| 18 | 20 |
test/error_test \ |
| 21 |
test/euler_test \ |
|
| 22 |
test/gomory_hu_test \ |
|
| 19 | 23 |
test/graph_copy_test \ |
| 20 | 24 |
test/graph_test \ |
| 21 | 25 |
test/graph_utils_test \ |
| 22 | 26 |
test/hao_orlin_test \ |
| 23 | 27 |
test/heap_test \ |
| 24 | 28 |
test/kruskal_test \ |
| 25 | 29 |
test/maps_test \ |
| 26 |
test/ |
|
| 30 |
test/matching_test \ |
|
| 31 |
test/min_cost_arborescence_test \ |
|
| 32 |
test/min_cost_flow_test \ |
|
| 33 |
test/min_mean_cycle_test \ |
|
| 27 | 34 |
test/path_test \ |
| 28 | 35 |
test/preflow_test \ |
| 29 | 36 |
test/radix_sort_test \ |
| 30 | 37 |
test/random_test \ |
| 31 | 38 |
test/suurballe_test \ |
| 32 | 39 |
test/test_tools_fail \ |
| 33 | 40 |
test/test_tools_pass \ |
| 34 | 41 |
test/time_measure_test \ |
| 35 | 42 |
test/unionfind_test |
| 36 | 43 |
|
| 44 |
test_test_tools_pass_DEPENDENCIES = demo |
|
| 45 |
|
|
| 37 | 46 |
if HAVE_LP |
| 38 | 47 |
check_PROGRAMS += test/lp_test |
| 39 | 48 |
endif HAVE_LP |
| 40 | 49 |
if HAVE_MIP |
| 41 | 50 |
check_PROGRAMS += test/mip_test |
| 42 | 51 |
endif HAVE_MIP |
| 43 | 52 |
|
| 44 | 53 |
TESTS += $(check_PROGRAMS) |
| 45 | 54 |
XFAIL_TESTS += test/test_tools_fail$(EXEEXT) |
| 46 | 55 |
|
| 47 | 56 |
test_adaptors_test_SOURCES = test/adaptors_test.cc |
| 57 |
test_bellman_ford_test_SOURCES = test/bellman_ford_test.cc |
|
| 48 | 58 |
test_bfs_test_SOURCES = test/bfs_test.cc |
| 49 | 59 |
test_circulation_test_SOURCES = test/circulation_test.cc |
| 50 | 60 |
test_counter_test_SOURCES = test/counter_test.cc |
| 61 |
test_connectivity_test_SOURCES = test/connectivity_test.cc |
|
| 51 | 62 |
test_dfs_test_SOURCES = test/dfs_test.cc |
| 52 | 63 |
test_digraph_test_SOURCES = test/digraph_test.cc |
| 53 | 64 |
test_dijkstra_test_SOURCES = test/dijkstra_test.cc |
| 54 | 65 |
test_dim_test_SOURCES = test/dim_test.cc |
| 55 | 66 |
test_edge_set_test_SOURCES = test/edge_set_test.cc |
| 56 | 67 |
test_error_test_SOURCES = test/error_test.cc |
| 68 |
test_euler_test_SOURCES = test/euler_test.cc |
|
| 69 |
test_gomory_hu_test_SOURCES = test/gomory_hu_test.cc |
|
| 57 | 70 |
test_graph_copy_test_SOURCES = test/graph_copy_test.cc |
| 58 | 71 |
test_graph_test_SOURCES = test/graph_test.cc |
| 59 | 72 |
test_graph_utils_test_SOURCES = test/graph_utils_test.cc |
| 60 | 73 |
test_heap_test_SOURCES = test/heap_test.cc |
| 61 | 74 |
test_kruskal_test_SOURCES = test/kruskal_test.cc |
| 62 | 75 |
test_hao_orlin_test_SOURCES = test/hao_orlin_test.cc |
| 63 | 76 |
test_lp_test_SOURCES = test/lp_test.cc |
| 64 | 77 |
test_maps_test_SOURCES = test/maps_test.cc |
| 65 | 78 |
test_mip_test_SOURCES = test/mip_test.cc |
| 66 |
|
|
| 79 |
test_matching_test_SOURCES = test/matching_test.cc |
|
| 80 |
test_min_cost_arborescence_test_SOURCES = test/min_cost_arborescence_test.cc |
|
| 81 |
test_min_cost_flow_test_SOURCES = test/min_cost_flow_test.cc |
|
| 82 |
test_min_mean_cycle_test_SOURCES = test/min_mean_cycle_test.cc |
|
| 67 | 83 |
test_path_test_SOURCES = test/path_test.cc |
| 68 | 84 |
test_preflow_test_SOURCES = test/preflow_test.cc |
| 69 | 85 |
test_radix_sort_test_SOURCES = test/radix_sort_test.cc |
| 70 | 86 |
test_suurballe_test_SOURCES = test/suurballe_test.cc |
| 71 | 87 |
test_random_test_SOURCES = test/random_test.cc |
| 72 | 88 |
test_test_tools_fail_SOURCES = test/test_tools_fail.cc |
| 73 | 89 |
test_test_tools_pass_SOURCES = test/test_tools_pass.cc |
| 74 | 90 |
test_time_measure_test_SOURCES = test/time_measure_test.cc |
| 75 | 91 |
test_unionfind_test_SOURCES = test/unionfind_test.cc |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <lemon/concepts/digraph.h> |
| 20 | 20 |
#include <lemon/smart_graph.h> |
| 21 | 21 |
#include <lemon/list_graph.h> |
| 22 | 22 |
#include <lemon/lgf_reader.h> |
| 23 | 23 |
#include <lemon/bfs.h> |
| 24 | 24 |
#include <lemon/path.h> |
| 25 | 25 |
|
| 26 | 26 |
#include "graph_test.h" |
| 27 | 27 |
#include "test_tools.h" |
| 28 | 28 |
|
| 29 | 29 |
using namespace lemon; |
| 30 | 30 |
|
| 31 | 31 |
char test_lgf[] = |
| 32 | 32 |
"@nodes\n" |
| 33 | 33 |
"label\n" |
| 34 | 34 |
"0\n" |
| 35 | 35 |
"1\n" |
| 36 | 36 |
"2\n" |
| 37 | 37 |
"3\n" |
| 38 | 38 |
"4\n" |
| 39 | 39 |
"5\n" |
| 40 | 40 |
"@arcs\n" |
| 41 | 41 |
" label\n" |
| 42 | 42 |
"0 1 0\n" |
| 43 | 43 |
"1 2 1\n" |
| 44 | 44 |
"2 3 2\n" |
| 45 | 45 |
"3 4 3\n" |
| 46 | 46 |
"0 3 4\n" |
| 47 | 47 |
"0 3 5\n" |
| 48 | 48 |
"5 2 6\n" |
| 49 | 49 |
"@attributes\n" |
| 50 | 50 |
"source 0\n" |
| 51 | 51 |
"target 4\n"; |
| 52 | 52 |
|
| 53 | 53 |
void checkBfsCompile() |
| 54 | 54 |
{
|
| 55 | 55 |
typedef concepts::Digraph Digraph; |
| 56 | 56 |
typedef Bfs<Digraph> BType; |
| 57 | 57 |
typedef Digraph::Node Node; |
| 58 | 58 |
typedef Digraph::Arc Arc; |
| 59 | 59 |
|
| 60 | 60 |
Digraph G; |
| 61 |
Node s, t; |
|
| 61 |
Node s, t, n; |
|
| 62 | 62 |
Arc e; |
| 63 |
int l; |
|
| 63 |
int l, i; |
|
| 64 | 64 |
bool b; |
| 65 | 65 |
BType::DistMap d(G); |
| 66 | 66 |
BType::PredMap p(G); |
| 67 | 67 |
Path<Digraph> pp; |
| 68 |
concepts::ReadMap<Node,bool> nm; |
|
| 68 | 69 |
|
| 69 | 70 |
{
|
| 70 | 71 |
BType bfs_test(G); |
| 72 |
const BType& const_bfs_test = bfs_test; |
|
| 71 | 73 |
|
| 72 | 74 |
bfs_test.run(s); |
| 73 | 75 |
bfs_test.run(s,t); |
| 74 | 76 |
bfs_test.run(); |
| 75 | 77 |
|
| 76 |
l = bfs_test.dist(t); |
|
| 77 |
e = bfs_test.predArc(t); |
|
| 78 |
s = bfs_test.predNode(t); |
|
| 79 |
b = bfs_test.reached(t); |
|
| 80 |
d = bfs_test.distMap(); |
|
| 81 |
p = bfs_test.predMap(); |
|
| 82 |
|
|
| 78 |
bfs_test.init(); |
|
| 79 |
bfs_test.addSource(s); |
|
| 80 |
n = bfs_test.processNextNode(); |
|
| 81 |
n = bfs_test.processNextNode(t, b); |
|
| 82 |
n = bfs_test.processNextNode(nm, n); |
|
| 83 |
n = const_bfs_test.nextNode(); |
|
| 84 |
b = const_bfs_test.emptyQueue(); |
|
| 85 |
i = const_bfs_test.queueSize(); |
|
| 86 |
|
|
| 87 |
bfs_test.start(); |
|
| 88 |
bfs_test.start(t); |
|
| 89 |
bfs_test.start(nm); |
|
| 90 |
|
|
| 91 |
l = const_bfs_test.dist(t); |
|
| 92 |
e = const_bfs_test.predArc(t); |
|
| 93 |
s = const_bfs_test.predNode(t); |
|
| 94 |
b = const_bfs_test.reached(t); |
|
| 95 |
d = const_bfs_test.distMap(); |
|
| 96 |
p = const_bfs_test.predMap(); |
|
| 97 |
pp = const_bfs_test.path(t); |
|
| 83 | 98 |
} |
| 84 | 99 |
{
|
| 85 | 100 |
BType |
| 86 | 101 |
::SetPredMap<concepts::ReadWriteMap<Node,Arc> > |
| 87 | 102 |
::SetDistMap<concepts::ReadWriteMap<Node,int> > |
| 88 | 103 |
::SetReachedMap<concepts::ReadWriteMap<Node,bool> > |
| 104 |
::SetStandardProcessedMap |
|
| 89 | 105 |
::SetProcessedMap<concepts::WriteMap<Node,bool> > |
| 90 |
::SetStandardProcessedMap |
|
| 91 | 106 |
::Create bfs_test(G); |
| 107 |
|
|
| 108 |
concepts::ReadWriteMap<Node,Arc> pred_map; |
|
| 109 |
concepts::ReadWriteMap<Node,int> dist_map; |
|
| 110 |
concepts::ReadWriteMap<Node,bool> reached_map; |
|
| 111 |
concepts::WriteMap<Node,bool> processed_map; |
|
| 112 |
|
|
| 113 |
bfs_test |
|
| 114 |
.predMap(pred_map) |
|
| 115 |
.distMap(dist_map) |
|
| 116 |
.reachedMap(reached_map) |
|
| 117 |
.processedMap(processed_map); |
|
| 92 | 118 |
|
| 93 | 119 |
bfs_test.run(s); |
| 94 | 120 |
bfs_test.run(s,t); |
| 95 | 121 |
bfs_test.run(); |
| 122 |
|
|
| 123 |
bfs_test.init(); |
|
| 124 |
bfs_test.addSource(s); |
|
| 125 |
n = bfs_test.processNextNode(); |
|
| 126 |
n = bfs_test.processNextNode(t, b); |
|
| 127 |
n = bfs_test.processNextNode(nm, n); |
|
| 128 |
n = bfs_test.nextNode(); |
|
| 129 |
b = bfs_test.emptyQueue(); |
|
| 130 |
i = bfs_test.queueSize(); |
|
| 131 |
|
|
| 132 |
bfs_test.start(); |
|
| 133 |
bfs_test.start(t); |
|
| 134 |
bfs_test.start(nm); |
|
| 96 | 135 |
|
| 97 | 136 |
l = bfs_test.dist(t); |
| 98 | 137 |
e = bfs_test.predArc(t); |
| 99 | 138 |
s = bfs_test.predNode(t); |
| 100 | 139 |
b = bfs_test.reached(t); |
| 101 | 140 |
pp = bfs_test.path(t); |
| 102 | 141 |
} |
| 103 | 142 |
} |
| 104 | 143 |
|
| 105 | 144 |
void checkBfsFunctionCompile() |
| 106 | 145 |
{
|
| 107 | 146 |
typedef int VType; |
| 108 | 147 |
typedef concepts::Digraph Digraph; |
| 109 | 148 |
typedef Digraph::Arc Arc; |
| 110 | 149 |
typedef Digraph::Node Node; |
| 111 | 150 |
|
| 112 | 151 |
Digraph g; |
| 113 | 152 |
bool b; |
| 114 | 153 |
bfs(g).run(Node()); |
| 115 | 154 |
b=bfs(g).run(Node(),Node()); |
| 116 | 155 |
bfs(g).run(); |
| 117 | 156 |
bfs(g) |
| 118 | 157 |
.predMap(concepts::ReadWriteMap<Node,Arc>()) |
| 119 | 158 |
.distMap(concepts::ReadWriteMap<Node,VType>()) |
| 120 | 159 |
.reachedMap(concepts::ReadWriteMap<Node,bool>()) |
| 121 | 160 |
.processedMap(concepts::WriteMap<Node,bool>()) |
| 122 | 161 |
.run(Node()); |
| 123 | 162 |
b=bfs(g) |
| 124 | 163 |
.predMap(concepts::ReadWriteMap<Node,Arc>()) |
| 125 | 164 |
.distMap(concepts::ReadWriteMap<Node,VType>()) |
| 126 | 165 |
.reachedMap(concepts::ReadWriteMap<Node,bool>()) |
| 127 | 166 |
.processedMap(concepts::WriteMap<Node,bool>()) |
| 128 | 167 |
.path(concepts::Path<Digraph>()) |
| 129 | 168 |
.dist(VType()) |
| 130 | 169 |
.run(Node(),Node()); |
| 131 | 170 |
bfs(g) |
| 132 | 171 |
.predMap(concepts::ReadWriteMap<Node,Arc>()) |
| 133 | 172 |
.distMap(concepts::ReadWriteMap<Node,VType>()) |
| 134 | 173 |
.reachedMap(concepts::ReadWriteMap<Node,bool>()) |
| 135 | 174 |
.processedMap(concepts::WriteMap<Node,bool>()) |
| 136 | 175 |
.run(); |
| 137 | 176 |
} |
| 138 | 177 |
|
| 139 | 178 |
template <class Digraph> |
| 140 | 179 |
void checkBfs() {
|
| 141 | 180 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 142 | 181 |
|
| 143 | 182 |
Digraph G; |
| 144 | 183 |
Node s, t; |
| 145 | 184 |
|
| 146 | 185 |
std::istringstream input(test_lgf); |
| 147 | 186 |
digraphReader(G, input). |
| 148 | 187 |
node("source", s).
|
| 149 | 188 |
node("target", t).
|
| 150 | 189 |
run(); |
| 151 | 190 |
|
| 152 | 191 |
Bfs<Digraph> bfs_test(G); |
| 153 | 192 |
bfs_test.run(s); |
| 154 | 193 |
|
| 155 | 194 |
check(bfs_test.dist(t)==2,"Bfs found a wrong path."); |
| 156 | 195 |
|
| 157 | 196 |
Path<Digraph> p = bfs_test.path(t); |
| 158 | 197 |
check(p.length()==2,"path() found a wrong path."); |
| 159 | 198 |
check(checkPath(G, p),"path() found a wrong path."); |
| 160 | 199 |
check(pathSource(G, p) == s,"path() found a wrong path."); |
| 161 | 200 |
check(pathTarget(G, p) == t,"path() found a wrong path."); |
| 162 | 201 |
|
| 163 | 202 |
|
| 164 | 203 |
for(ArcIt a(G); a!=INVALID; ++a) {
|
| 165 | 204 |
Node u=G.source(a); |
| 166 | 205 |
Node v=G.target(a); |
| 167 | 206 |
check( !bfs_test.reached(u) || |
| 168 | 207 |
(bfs_test.dist(v) <= bfs_test.dist(u)+1), |
| 169 | 208 |
"Wrong output. " << G.id(u) << "->" << G.id(v)); |
| 170 | 209 |
} |
| 171 | 210 |
|
| 172 | 211 |
for(NodeIt v(G); v!=INVALID; ++v) {
|
| 173 | 212 |
if (bfs_test.reached(v)) {
|
| 174 | 213 |
check(v==s || bfs_test.predArc(v)!=INVALID, "Wrong tree."); |
| 175 | 214 |
if (bfs_test.predArc(v)!=INVALID ) {
|
| 176 | 215 |
Arc a=bfs_test.predArc(v); |
| 177 | 216 |
Node u=G.source(a); |
| 178 | 217 |
check(u==bfs_test.predNode(v),"Wrong tree."); |
| 179 | 218 |
check(bfs_test.dist(v) - bfs_test.dist(u) == 1, |
| 180 | 219 |
"Wrong distance. Difference: " |
| 181 | 220 |
<< std::abs(bfs_test.dist(v) - bfs_test.dist(u) - 1)); |
| 182 | 221 |
} |
| 183 | 222 |
} |
| 184 | 223 |
} |
| 185 | 224 |
|
| 186 | 225 |
{
|
| 187 | 226 |
NullMap<Node,Arc> myPredMap; |
| 188 | 227 |
bfs(G).predMap(myPredMap).run(s); |
| 189 | 228 |
} |
| 190 | 229 |
} |
| 191 | 230 |
|
| 192 | 231 |
int main() |
| 193 | 232 |
{
|
| 194 | 233 |
checkBfs<ListDigraph>(); |
| 195 | 234 |
checkBfs<SmartDigraph>(); |
| 196 | 235 |
return 0; |
| 197 | 236 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <iostream> |
| 20 | 20 |
|
| 21 | 21 |
#include "test_tools.h" |
| 22 | 22 |
#include <lemon/list_graph.h> |
| 23 | 23 |
#include <lemon/circulation.h> |
| 24 | 24 |
#include <lemon/lgf_reader.h> |
| 25 | 25 |
#include <lemon/concepts/digraph.h> |
| 26 | 26 |
#include <lemon/concepts/maps.h> |
| 27 | 27 |
|
| 28 | 28 |
using namespace lemon; |
| 29 | 29 |
|
| 30 | 30 |
char test_lgf[] = |
| 31 | 31 |
"@nodes\n" |
| 32 | 32 |
"label\n" |
| 33 | 33 |
"0\n" |
| 34 | 34 |
"1\n" |
| 35 | 35 |
"2\n" |
| 36 | 36 |
"3\n" |
| 37 | 37 |
"4\n" |
| 38 | 38 |
"5\n" |
| 39 | 39 |
"@arcs\n" |
| 40 | 40 |
" lcap ucap\n" |
| 41 | 41 |
"0 1 2 10\n" |
| 42 | 42 |
"0 2 2 6\n" |
| 43 | 43 |
"1 3 4 7\n" |
| 44 | 44 |
"1 4 0 5\n" |
| 45 | 45 |
"2 4 1 3\n" |
| 46 | 46 |
"3 5 3 8\n" |
| 47 | 47 |
"4 5 3 7\n" |
| 48 | 48 |
"@attributes\n" |
| 49 | 49 |
"source 0\n" |
| 50 | 50 |
"sink 5\n"; |
| 51 | 51 |
|
| 52 | 52 |
void checkCirculationCompile() |
| 53 | 53 |
{
|
| 54 | 54 |
typedef int VType; |
| 55 | 55 |
typedef concepts::Digraph Digraph; |
| 56 | 56 |
|
| 57 | 57 |
typedef Digraph::Node Node; |
| 58 | 58 |
typedef Digraph::Arc Arc; |
| 59 | 59 |
typedef concepts::ReadMap<Arc,VType> CapMap; |
| 60 |
typedef concepts::ReadMap<Node,VType> |
|
| 60 |
typedef concepts::ReadMap<Node,VType> SupplyMap; |
|
| 61 | 61 |
typedef concepts::ReadWriteMap<Arc,VType> FlowMap; |
| 62 | 62 |
typedef concepts::WriteMap<Node,bool> BarrierMap; |
| 63 | 63 |
|
| 64 | 64 |
typedef Elevator<Digraph, Digraph::Node> Elev; |
| 65 | 65 |
typedef LinkedElevator<Digraph, Digraph::Node> LinkedElev; |
| 66 | 66 |
|
| 67 | 67 |
Digraph g; |
| 68 | 68 |
Node n; |
| 69 | 69 |
Arc a; |
| 70 | 70 |
CapMap lcap, ucap; |
| 71 |
|
|
| 71 |
SupplyMap supply; |
|
| 72 | 72 |
FlowMap flow; |
| 73 | 73 |
BarrierMap bar; |
| 74 |
VType v; |
|
| 75 |
bool b; |
|
| 74 | 76 |
|
| 75 |
Circulation<Digraph, CapMap, CapMap, DeltaMap> |
|
| 76 |
::SetFlowMap<FlowMap> |
|
| 77 |
::SetElevator<Elev> |
|
| 78 |
::SetStandardElevator<LinkedElev> |
|
| 79 |
::Create circ_test(g,lcap,ucap,delta); |
|
| 80 |
|
|
| 81 |
circ_test.lowerCapMap(lcap); |
|
| 82 |
circ_test.upperCapMap(ucap); |
|
| 83 |
circ_test.deltaMap(delta); |
|
| 84 |
flow = circ_test.flowMap(); |
|
| 85 |
|
|
| 77 |
typedef Circulation<Digraph, CapMap, CapMap, SupplyMap> |
|
| 78 |
::SetFlowMap<FlowMap> |
|
| 79 |
::SetElevator<Elev> |
|
| 80 |
::SetStandardElevator<LinkedElev> |
|
| 81 |
::Create CirculationType; |
|
| 82 |
CirculationType circ_test(g, lcap, ucap, supply); |
|
| 83 |
const CirculationType& const_circ_test = circ_test; |
|
| 84 |
|
|
| 85 |
circ_test |
|
| 86 |
.lowerMap(lcap) |
|
| 87 |
.upperMap(ucap) |
|
| 88 |
.supplyMap(supply) |
|
| 89 |
.flowMap(flow); |
|
| 90 |
|
|
| 91 |
const CirculationType::Elevator& elev = const_circ_test.elevator(); |
|
| 92 |
circ_test.elevator(const_cast<CirculationType::Elevator&>(elev)); |
|
| 93 |
CirculationType::Tolerance tol = const_circ_test.tolerance(); |
|
| 94 |
circ_test.tolerance(tol); |
|
| 86 | 95 |
|
| 87 | 96 |
circ_test.init(); |
| 88 | 97 |
circ_test.greedyInit(); |
| 89 | 98 |
circ_test.start(); |
| 90 | 99 |
circ_test.run(); |
| 91 | 100 |
|
| 92 |
circ_test.barrier(n); |
|
| 93 |
circ_test.barrierMap(bar); |
|
| 94 |
|
|
| 101 |
v = const_circ_test.flow(a); |
|
| 102 |
const FlowMap& fm = const_circ_test.flowMap(); |
|
| 103 |
b = const_circ_test.barrier(n); |
|
| 104 |
const_circ_test.barrierMap(bar); |
|
| 105 |
|
|
| 106 |
ignore_unused_variable_warning(fm); |
|
| 95 | 107 |
} |
| 96 | 108 |
|
| 97 | 109 |
template <class G, class LM, class UM, class DM> |
| 98 | 110 |
void checkCirculation(const G& g, const LM& lm, const UM& um, |
| 99 | 111 |
const DM& dm, bool find) |
| 100 | 112 |
{
|
| 101 | 113 |
Circulation<G, LM, UM, DM> circ(g, lm, um, dm); |
| 102 | 114 |
bool ret = circ.run(); |
| 103 | 115 |
if (find) {
|
| 104 | 116 |
check(ret, "A feasible solution should have been found."); |
| 105 | 117 |
check(circ.checkFlow(), "The found flow is corrupt."); |
| 106 | 118 |
check(!circ.checkBarrier(), "A barrier should not have been found."); |
| 107 | 119 |
} else {
|
| 108 | 120 |
check(!ret, "A feasible solution should not have been found."); |
| 109 | 121 |
check(circ.checkBarrier(), "The found barrier is corrupt."); |
| 110 | 122 |
} |
| 111 | 123 |
} |
| 112 | 124 |
|
| 113 | 125 |
int main (int, char*[]) |
| 114 | 126 |
{
|
| 115 | 127 |
typedef ListDigraph Digraph; |
| 116 | 128 |
DIGRAPH_TYPEDEFS(Digraph); |
| 117 | 129 |
|
| 118 | 130 |
Digraph g; |
| 119 | 131 |
IntArcMap lo(g), up(g); |
| 120 | 132 |
IntNodeMap delta(g, 0); |
| 121 | 133 |
Node s, t; |
| 122 | 134 |
|
| 123 | 135 |
std::istringstream input(test_lgf); |
| 124 | 136 |
DigraphReader<Digraph>(g,input). |
| 125 | 137 |
arcMap("lcap", lo).
|
| 126 | 138 |
arcMap("ucap", up).
|
| 127 | 139 |
node("source",s).
|
| 128 | 140 |
node("sink",t).
|
| 129 | 141 |
run(); |
| 130 | 142 |
|
| 131 | 143 |
delta[s] = 7; delta[t] = -7; |
| 132 | 144 |
checkCirculation(g, lo, up, delta, true); |
| 133 | 145 |
|
| 134 | 146 |
delta[s] = 13; delta[t] = -13; |
| 135 | 147 |
checkCirculation(g, lo, up, delta, true); |
| 136 | 148 |
|
| 137 | 149 |
delta[s] = 6; delta[t] = -6; |
| 138 | 150 |
checkCirculation(g, lo, up, delta, false); |
| 139 | 151 |
|
| 140 | 152 |
delta[s] = 14; delta[t] = -14; |
| 141 | 153 |
checkCirculation(g, lo, up, delta, false); |
| 142 | 154 |
|
| 143 | 155 |
delta[s] = 7; delta[t] = -13; |
| 144 | 156 |
checkCirculation(g, lo, up, delta, true); |
| 145 | 157 |
|
| 146 | 158 |
delta[s] = 5; delta[t] = -15; |
| 147 | 159 |
checkCirculation(g, lo, up, delta, true); |
| 148 | 160 |
|
| 149 | 161 |
delta[s] = 10; delta[t] = -11; |
| 150 | 162 |
checkCirculation(g, lo, up, delta, true); |
| 151 | 163 |
|
| 152 | 164 |
delta[s] = 11; delta[t] = -10; |
| 153 | 165 |
checkCirculation(g, lo, up, delta, false); |
| 154 | 166 |
|
| 155 | 167 |
return 0; |
| 156 | 168 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <lemon/counter.h> |
| 20 | 20 |
#include <vector> |
| 21 |
#include <sstream> |
|
| 22 |
|
|
| 23 |
#include "test/test_tools.h" |
|
| 21 | 24 |
|
| 22 | 25 |
using namespace lemon; |
| 23 | 26 |
|
| 24 | 27 |
template <typename T> |
| 25 | 28 |
void bubbleSort(std::vector<T>& v) {
|
| 26 |
Counter op("Bubble Sort - Operations: ");
|
|
| 27 |
Counter::NoSubCounter as(op, "Assignments: "); |
|
| 28 |
Counter::NoSubCounter co(op, "Comparisons: "); |
|
| 29 |
for (int i = v.size()-1; i > 0; --i) {
|
|
| 30 |
for (int j = 0; j < i; ++j) {
|
|
| 31 |
if (v[j] > v[j+1]) {
|
|
| 32 |
T tmp = v[j]; |
|
| 33 |
v[j] = v[j+1]; |
|
| 34 |
v[j+1] = tmp; |
|
| 35 |
as += 3; |
|
| 29 |
std::stringstream s1, s2, s3; |
|
| 30 |
{
|
|
| 31 |
Counter op("Bubble Sort - Operations: ", s1);
|
|
| 32 |
Counter::SubCounter as(op, "Assignments: ", s2); |
|
| 33 |
Counter::SubCounter co(op, "Comparisons: ", s3); |
|
| 34 |
for (int i = v.size()-1; i > 0; --i) {
|
|
| 35 |
for (int j = 0; j < i; ++j) {
|
|
| 36 |
if (v[j] > v[j+1]) {
|
|
| 37 |
T tmp = v[j]; |
|
| 38 |
v[j] = v[j+1]; |
|
| 39 |
v[j+1] = tmp; |
|
| 40 |
as += 3; |
|
| 41 |
} |
|
| 42 |
++co; |
|
| 36 | 43 |
} |
| 37 |
++co; |
|
| 38 | 44 |
} |
| 39 | 45 |
} |
| 46 |
check(s1.str() == "Bubble Sort - Operations: 102\n", "Wrong counter"); |
|
| 47 |
check(s2.str() == "Assignments: 57\n", "Wrong subcounter"); |
|
| 48 |
check(s3.str() == "Comparisons: 45\n", "Wrong subcounter"); |
|
| 40 | 49 |
} |
| 41 | 50 |
|
| 42 | 51 |
template <typename T> |
| 43 | 52 |
void insertionSort(std::vector<T>& v) {
|
| 44 |
Counter op("Insertion Sort - Operations: ");
|
|
| 45 |
Counter::NoSubCounter as(op, "Assignments: "); |
|
| 46 |
Counter::NoSubCounter co(op, "Comparisons: "); |
|
| 47 |
for (int i = 1; i < int(v.size()); ++i) {
|
|
| 48 |
T value = v[i]; |
|
| 49 |
++as; |
|
| 50 |
int j = i; |
|
| 51 |
while (j > 0 && v[j-1] > value) {
|
|
| 52 |
v[j] = v[j-1]; |
|
| 53 |
--j; |
|
| 54 |
|
|
| 53 |
std::stringstream s1, s2, s3; |
|
| 54 |
{
|
|
| 55 |
Counter op("Insertion Sort - Operations: ", s1);
|
|
| 56 |
Counter::SubCounter as(op, "Assignments: ", s2); |
|
| 57 |
Counter::SubCounter co(op, "Comparisons: ", s3); |
|
| 58 |
for (int i = 1; i < int(v.size()); ++i) {
|
|
| 59 |
T value = v[i]; |
|
| 60 |
++as; |
|
| 61 |
int j = i; |
|
| 62 |
while (j > 0 && v[j-1] > value) {
|
|
| 63 |
v[j] = v[j-1]; |
|
| 64 |
--j; |
|
| 65 |
++co; ++as; |
|
| 66 |
} |
|
| 67 |
v[j] = value; |
|
| 68 |
++as; |
|
| 55 | 69 |
} |
| 56 |
v[j] = value; |
|
| 57 |
++as; |
|
| 58 | 70 |
} |
| 71 |
check(s1.str() == "Insertion Sort - Operations: 56\n", "Wrong counter"); |
|
| 72 |
check(s2.str() == "Assignments: 37\n", "Wrong subcounter"); |
|
| 73 |
check(s3.str() == "Comparisons: 19\n", "Wrong subcounter"); |
|
| 59 | 74 |
} |
| 60 | 75 |
|
| 61 | 76 |
template <typename MyCounter> |
| 62 |
void counterTest() {
|
|
| 63 |
MyCounter c("Main Counter: ");
|
|
| 64 |
c++; |
|
| 65 |
typename MyCounter::SubCounter d(c, "SubCounter: "); |
|
| 66 |
d++; |
|
| 67 |
typename MyCounter::SubCounter::NoSubCounter e(d, "SubSubCounter: "); |
|
| 68 |
e++; |
|
| 69 |
d+=3; |
|
| 70 |
c-=4; |
|
| 71 |
e-=2; |
|
| 72 |
c.reset(2); |
|
| 73 |
c.reset(); |
|
| 77 |
void counterTest(bool output) {
|
|
| 78 |
std::stringstream s1, s2, s3; |
|
| 79 |
{
|
|
| 80 |
MyCounter c("Main Counter: ", s1);
|
|
| 81 |
c++; |
|
| 82 |
typename MyCounter::SubCounter d(c, "SubCounter: ", s2); |
|
| 83 |
d++; |
|
| 84 |
typename MyCounter::SubCounter::NoSubCounter e(d, "SubSubCounter: ", s3); |
|
| 85 |
e++; |
|
| 86 |
d+=3; |
|
| 87 |
c-=4; |
|
| 88 |
e-=2; |
|
| 89 |
c.reset(2); |
|
| 90 |
c.reset(); |
|
| 91 |
} |
|
| 92 |
if (output) {
|
|
| 93 |
check(s1.str() == "Main Counter: 3\n", "Wrong Counter"); |
|
| 94 |
check(s2.str() == "SubCounter: 3\n", "Wrong SubCounter"); |
|
| 95 |
check(s3.str() == "", "Wrong NoSubCounter"); |
|
| 96 |
} else {
|
|
| 97 |
check(s1.str() == "", "Wrong NoCounter"); |
|
| 98 |
check(s2.str() == "", "Wrong SubCounter"); |
|
| 99 |
check(s3.str() == "", "Wrong NoSubCounter"); |
|
| 100 |
} |
|
| 74 | 101 |
} |
| 75 | 102 |
|
| 76 | 103 |
void init(std::vector<int>& v) {
|
| 77 | 104 |
v[0] = 10; v[1] = 60; v[2] = 20; v[3] = 90; v[4] = 100; |
| 78 | 105 |
v[5] = 80; v[6] = 40; v[7] = 30; v[8] = 50; v[9] = 70; |
| 79 | 106 |
} |
| 80 | 107 |
|
| 81 | 108 |
int main() |
| 82 | 109 |
{
|
| 83 |
counterTest<Counter>(); |
|
| 84 |
counterTest<NoCounter>(); |
|
| 110 |
counterTest<Counter>(true); |
|
| 111 |
counterTest<NoCounter>(false); |
|
| 85 | 112 |
|
| 86 | 113 |
std::vector<int> x(10); |
| 87 | 114 |
init(x); bubbleSort(x); |
| 88 | 115 |
init(x); insertionSort(x); |
| 89 | 116 |
|
| 90 | 117 |
return 0; |
| 91 | 118 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <lemon/concepts/digraph.h> |
| 20 | 20 |
#include <lemon/smart_graph.h> |
| 21 | 21 |
#include <lemon/list_graph.h> |
| 22 | 22 |
#include <lemon/lgf_reader.h> |
| 23 | 23 |
#include <lemon/dfs.h> |
| 24 | 24 |
#include <lemon/path.h> |
| 25 | 25 |
|
| 26 | 26 |
#include "graph_test.h" |
| 27 | 27 |
#include "test_tools.h" |
| 28 | 28 |
|
| 29 | 29 |
using namespace lemon; |
| 30 | 30 |
|
| 31 | 31 |
char test_lgf[] = |
| 32 | 32 |
"@nodes\n" |
| 33 | 33 |
"label\n" |
| 34 | 34 |
"0\n" |
| 35 | 35 |
"1\n" |
| 36 | 36 |
"2\n" |
| 37 | 37 |
"3\n" |
| 38 | 38 |
"4\n" |
| 39 | 39 |
"5\n" |
| 40 | 40 |
"6\n" |
| 41 | 41 |
"@arcs\n" |
| 42 | 42 |
" label\n" |
| 43 | 43 |
"0 1 0\n" |
| 44 | 44 |
"1 2 1\n" |
| 45 | 45 |
"2 3 2\n" |
| 46 | 46 |
"1 4 3\n" |
| 47 | 47 |
"4 2 4\n" |
| 48 | 48 |
"4 5 5\n" |
| 49 | 49 |
"5 0 6\n" |
| 50 | 50 |
"6 3 7\n" |
| 51 | 51 |
"@attributes\n" |
| 52 | 52 |
"source 0\n" |
| 53 | 53 |
"target 5\n"; |
| 54 | 54 |
|
| 55 | 55 |
void checkDfsCompile() |
| 56 | 56 |
{
|
| 57 | 57 |
typedef concepts::Digraph Digraph; |
| 58 | 58 |
typedef Dfs<Digraph> DType; |
| 59 | 59 |
typedef Digraph::Node Node; |
| 60 | 60 |
typedef Digraph::Arc Arc; |
| 61 | 61 |
|
| 62 | 62 |
Digraph G; |
| 63 | 63 |
Node s, t; |
| 64 | 64 |
Arc e; |
| 65 |
int l; |
|
| 65 |
int l, i; |
|
| 66 | 66 |
bool b; |
| 67 | 67 |
DType::DistMap d(G); |
| 68 | 68 |
DType::PredMap p(G); |
| 69 | 69 |
Path<Digraph> pp; |
| 70 |
concepts::ReadMap<Arc,bool> am; |
|
| 70 | 71 |
|
| 71 | 72 |
{
|
| 72 | 73 |
DType dfs_test(G); |
| 74 |
const DType& const_dfs_test = dfs_test; |
|
| 73 | 75 |
|
| 74 | 76 |
dfs_test.run(s); |
| 75 | 77 |
dfs_test.run(s,t); |
| 76 | 78 |
dfs_test.run(); |
| 77 | 79 |
|
| 78 |
l = dfs_test.dist(t); |
|
| 79 |
e = dfs_test.predArc(t); |
|
| 80 |
s = dfs_test.predNode(t); |
|
| 81 |
b = dfs_test.reached(t); |
|
| 82 |
d = dfs_test.distMap(); |
|
| 83 |
p = dfs_test.predMap(); |
|
| 84 |
|
|
| 80 |
dfs_test.init(); |
|
| 81 |
dfs_test.addSource(s); |
|
| 82 |
e = dfs_test.processNextArc(); |
|
| 83 |
e = const_dfs_test.nextArc(); |
|
| 84 |
b = const_dfs_test.emptyQueue(); |
|
| 85 |
i = const_dfs_test.queueSize(); |
|
| 86 |
|
|
| 87 |
dfs_test.start(); |
|
| 88 |
dfs_test.start(t); |
|
| 89 |
dfs_test.start(am); |
|
| 90 |
|
|
| 91 |
l = const_dfs_test.dist(t); |
|
| 92 |
e = const_dfs_test.predArc(t); |
|
| 93 |
s = const_dfs_test.predNode(t); |
|
| 94 |
b = const_dfs_test.reached(t); |
|
| 95 |
d = const_dfs_test.distMap(); |
|
| 96 |
p = const_dfs_test.predMap(); |
|
| 97 |
pp = const_dfs_test.path(t); |
|
| 85 | 98 |
} |
| 86 | 99 |
{
|
| 87 | 100 |
DType |
| 88 | 101 |
::SetPredMap<concepts::ReadWriteMap<Node,Arc> > |
| 89 | 102 |
::SetDistMap<concepts::ReadWriteMap<Node,int> > |
| 90 | 103 |
::SetReachedMap<concepts::ReadWriteMap<Node,bool> > |
| 104 |
::SetStandardProcessedMap |
|
| 91 | 105 |
::SetProcessedMap<concepts::WriteMap<Node,bool> > |
| 92 |
::SetStandardProcessedMap |
|
| 93 | 106 |
::Create dfs_test(G); |
| 94 | 107 |
|
| 108 |
concepts::ReadWriteMap<Node,Arc> pred_map; |
|
| 109 |
concepts::ReadWriteMap<Node,int> dist_map; |
|
| 110 |
concepts::ReadWriteMap<Node,bool> reached_map; |
|
| 111 |
concepts::WriteMap<Node,bool> processed_map; |
|
| 112 |
|
|
| 113 |
dfs_test |
|
| 114 |
.predMap(pred_map) |
|
| 115 |
.distMap(dist_map) |
|
| 116 |
.reachedMap(reached_map) |
|
| 117 |
.processedMap(processed_map); |
|
| 118 |
|
|
| 95 | 119 |
dfs_test.run(s); |
| 96 | 120 |
dfs_test.run(s,t); |
| 97 | 121 |
dfs_test.run(); |
| 122 |
dfs_test.init(); |
|
| 123 |
|
|
| 124 |
dfs_test.addSource(s); |
|
| 125 |
e = dfs_test.processNextArc(); |
|
| 126 |
e = dfs_test.nextArc(); |
|
| 127 |
b = dfs_test.emptyQueue(); |
|
| 128 |
i = dfs_test.queueSize(); |
|
| 129 |
|
|
| 130 |
dfs_test.start(); |
|
| 131 |
dfs_test.start(t); |
|
| 132 |
dfs_test.start(am); |
|
| 98 | 133 |
|
| 99 | 134 |
l = dfs_test.dist(t); |
| 100 | 135 |
e = dfs_test.predArc(t); |
| 101 | 136 |
s = dfs_test.predNode(t); |
| 102 | 137 |
b = dfs_test.reached(t); |
| 103 | 138 |
pp = dfs_test.path(t); |
| 104 | 139 |
} |
| 105 | 140 |
} |
| 106 | 141 |
|
| 107 | 142 |
void checkDfsFunctionCompile() |
| 108 | 143 |
{
|
| 109 | 144 |
typedef int VType; |
| 110 | 145 |
typedef concepts::Digraph Digraph; |
| 111 | 146 |
typedef Digraph::Arc Arc; |
| 112 | 147 |
typedef Digraph::Node Node; |
| 113 | 148 |
|
| 114 | 149 |
Digraph g; |
| 115 | 150 |
bool b; |
| 116 | 151 |
dfs(g).run(Node()); |
| 117 | 152 |
b=dfs(g).run(Node(),Node()); |
| 118 | 153 |
dfs(g).run(); |
| 119 | 154 |
dfs(g) |
| 120 | 155 |
.predMap(concepts::ReadWriteMap<Node,Arc>()) |
| 121 | 156 |
.distMap(concepts::ReadWriteMap<Node,VType>()) |
| 122 | 157 |
.reachedMap(concepts::ReadWriteMap<Node,bool>()) |
| 123 | 158 |
.processedMap(concepts::WriteMap<Node,bool>()) |
| 124 | 159 |
.run(Node()); |
| 125 | 160 |
b=dfs(g) |
| 126 | 161 |
.predMap(concepts::ReadWriteMap<Node,Arc>()) |
| 127 | 162 |
.distMap(concepts::ReadWriteMap<Node,VType>()) |
| 128 | 163 |
.reachedMap(concepts::ReadWriteMap<Node,bool>()) |
| 129 | 164 |
.processedMap(concepts::WriteMap<Node,bool>()) |
| 130 | 165 |
.path(concepts::Path<Digraph>()) |
| 131 | 166 |
.dist(VType()) |
| 132 | 167 |
.run(Node(),Node()); |
| 133 | 168 |
dfs(g) |
| 134 | 169 |
.predMap(concepts::ReadWriteMap<Node,Arc>()) |
| 135 | 170 |
.distMap(concepts::ReadWriteMap<Node,VType>()) |
| 136 | 171 |
.reachedMap(concepts::ReadWriteMap<Node,bool>()) |
| 137 | 172 |
.processedMap(concepts::WriteMap<Node,bool>()) |
| 138 | 173 |
.run(); |
| 139 | 174 |
} |
| 140 | 175 |
|
| 141 | 176 |
template <class Digraph> |
| 142 | 177 |
void checkDfs() {
|
| 143 | 178 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 144 | 179 |
|
| 145 | 180 |
Digraph G; |
| 146 | 181 |
Node s, t; |
| 147 | 182 |
|
| 148 | 183 |
std::istringstream input(test_lgf); |
| 149 | 184 |
digraphReader(G, input). |
| 150 | 185 |
node("source", s).
|
| 151 | 186 |
node("target", t).
|
| 152 | 187 |
run(); |
| 153 | 188 |
|
| 154 | 189 |
Dfs<Digraph> dfs_test(G); |
| 155 | 190 |
dfs_test.run(s); |
| 156 | 191 |
|
| 157 | 192 |
Path<Digraph> p = dfs_test.path(t); |
| 158 | 193 |
check(p.length() == dfs_test.dist(t),"path() found a wrong path."); |
| 159 | 194 |
check(checkPath(G, p),"path() found a wrong path."); |
| 160 | 195 |
check(pathSource(G, p) == s,"path() found a wrong path."); |
| 161 | 196 |
check(pathTarget(G, p) == t,"path() found a wrong path."); |
| 162 | 197 |
|
| 163 | 198 |
for(NodeIt v(G); v!=INVALID; ++v) {
|
| 164 | 199 |
if (dfs_test.reached(v)) {
|
| 165 | 200 |
check(v==s || dfs_test.predArc(v)!=INVALID, "Wrong tree."); |
| 166 | 201 |
if (dfs_test.predArc(v)!=INVALID ) {
|
| 167 | 202 |
Arc e=dfs_test.predArc(v); |
| 168 | 203 |
Node u=G.source(e); |
| 169 | 204 |
check(u==dfs_test.predNode(v),"Wrong tree."); |
| 170 | 205 |
check(dfs_test.dist(v) - dfs_test.dist(u) == 1, |
| 171 | 206 |
"Wrong distance. (" << dfs_test.dist(u) << "->"
|
| 172 | 207 |
<< dfs_test.dist(v) << ")"); |
| 173 | 208 |
} |
| 174 | 209 |
} |
| 175 | 210 |
} |
| 176 | 211 |
|
| 177 | 212 |
{
|
| 178 | 213 |
NullMap<Node,Arc> myPredMap; |
| 179 | 214 |
dfs(G).predMap(myPredMap).run(s); |
| 180 | 215 |
} |
| 181 | 216 |
} |
| 182 | 217 |
|
| 183 | 218 |
int main() |
| 184 | 219 |
{
|
| 185 | 220 |
checkDfs<ListDigraph>(); |
| 186 | 221 |
checkDfs<SmartDigraph>(); |
| 187 | 222 |
return 0; |
| 188 | 223 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <lemon/concepts/digraph.h> |
| 20 | 20 |
#include <lemon/list_graph.h> |
| 21 | 21 |
#include <lemon/smart_graph.h> |
| 22 |
#include <lemon/static_graph.h> |
|
| 22 | 23 |
#include <lemon/full_graph.h> |
| 23 | 24 |
|
| 24 | 25 |
#include "test_tools.h" |
| 25 | 26 |
#include "graph_test.h" |
| 26 | 27 |
|
| 27 | 28 |
using namespace lemon; |
| 28 | 29 |
using namespace lemon::concepts; |
| 29 | 30 |
|
| 30 | 31 |
template <class Digraph> |
| 31 | 32 |
void checkDigraphBuild() {
|
| 32 | 33 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 33 | 34 |
Digraph G; |
| 34 | 35 |
|
| 35 | 36 |
checkGraphNodeList(G, 0); |
| 36 | 37 |
checkGraphArcList(G, 0); |
| 37 | 38 |
|
| 39 |
G.reserveNode(3); |
|
| 40 |
G.reserveArc(4); |
|
| 41 |
|
|
| 38 | 42 |
Node |
| 39 | 43 |
n1 = G.addNode(), |
| 40 | 44 |
n2 = G.addNode(), |
| 41 | 45 |
n3 = G.addNode(); |
| 42 | 46 |
checkGraphNodeList(G, 3); |
| 43 | 47 |
checkGraphArcList(G, 0); |
| 44 | 48 |
|
| 45 | 49 |
Arc a1 = G.addArc(n1, n2); |
| 46 | 50 |
check(G.source(a1) == n1 && G.target(a1) == n2, "Wrong arc"); |
| 47 | 51 |
checkGraphNodeList(G, 3); |
| 48 | 52 |
checkGraphArcList(G, 1); |
| 49 | 53 |
|
| 50 | 54 |
checkGraphOutArcList(G, n1, 1); |
| 51 | 55 |
checkGraphOutArcList(G, n2, 0); |
| 52 | 56 |
checkGraphOutArcList(G, n3, 0); |
| 53 | 57 |
|
| 54 | 58 |
checkGraphInArcList(G, n1, 0); |
| 55 | 59 |
checkGraphInArcList(G, n2, 1); |
| 56 | 60 |
checkGraphInArcList(G, n3, 0); |
| 57 | 61 |
|
| 58 | 62 |
checkGraphConArcList(G, 1); |
| 59 | 63 |
|
| 60 | 64 |
Arc a2 = G.addArc(n2, n1), |
| 61 | 65 |
a3 = G.addArc(n2, n3), |
| 62 | 66 |
a4 = G.addArc(n2, n3); |
| 63 | 67 |
|
| 64 | 68 |
checkGraphNodeList(G, 3); |
| 65 | 69 |
checkGraphArcList(G, 4); |
| 66 | 70 |
|
| 67 | 71 |
checkGraphOutArcList(G, n1, 1); |
| 68 | 72 |
checkGraphOutArcList(G, n2, 3); |
| 69 | 73 |
checkGraphOutArcList(G, n3, 0); |
| 70 | 74 |
|
| 71 | 75 |
checkGraphInArcList(G, n1, 1); |
| 72 | 76 |
checkGraphInArcList(G, n2, 1); |
| 73 | 77 |
checkGraphInArcList(G, n3, 2); |
| 74 | 78 |
|
| 75 | 79 |
checkGraphConArcList(G, 4); |
| 76 | 80 |
|
| 77 | 81 |
checkNodeIds(G); |
| 78 | 82 |
checkArcIds(G); |
| 79 | 83 |
checkGraphNodeMap(G); |
| 80 | 84 |
checkGraphArcMap(G); |
| 81 | 85 |
} |
| 82 | 86 |
|
| 83 | 87 |
template <class Digraph> |
| 84 | 88 |
void checkDigraphSplit() {
|
| 85 | 89 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 86 | 90 |
|
| 87 | 91 |
Digraph G; |
| 88 | 92 |
Node n1 = G.addNode(), n2 = G.addNode(), n3 = G.addNode(); |
| 89 | 93 |
Arc a1 = G.addArc(n1, n2), a2 = G.addArc(n2, n1), |
| 90 | 94 |
a3 = G.addArc(n2, n3), a4 = G.addArc(n2, n3); |
| 91 | 95 |
|
| 92 | 96 |
Node n4 = G.split(n2); |
| 93 | 97 |
|
| 94 | 98 |
check(G.target(OutArcIt(G, n2)) == n4 && |
| 95 | 99 |
G.source(InArcIt(G, n4)) == n2, |
| 96 | 100 |
"Wrong split."); |
| 97 | 101 |
|
| 98 | 102 |
checkGraphNodeList(G, 4); |
| 99 | 103 |
checkGraphArcList(G, 5); |
| 100 | 104 |
|
| 101 | 105 |
checkGraphOutArcList(G, n1, 1); |
| 102 | 106 |
checkGraphOutArcList(G, n2, 1); |
| 103 | 107 |
checkGraphOutArcList(G, n3, 0); |
| 104 | 108 |
checkGraphOutArcList(G, n4, 3); |
| 105 | 109 |
|
| 106 | 110 |
checkGraphInArcList(G, n1, 1); |
| 107 | 111 |
checkGraphInArcList(G, n2, 1); |
| 108 | 112 |
checkGraphInArcList(G, n3, 2); |
| 109 | 113 |
checkGraphInArcList(G, n4, 1); |
| 110 | 114 |
|
| 111 | 115 |
checkGraphConArcList(G, 5); |
| 112 | 116 |
} |
| 113 | 117 |
|
| 114 | 118 |
template <class Digraph> |
| 115 | 119 |
void checkDigraphAlter() {
|
| 116 | 120 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 117 | 121 |
|
| 118 | 122 |
Digraph G; |
| 119 | 123 |
Node n1 = G.addNode(), n2 = G.addNode(), |
| 120 | 124 |
n3 = G.addNode(), n4 = G.addNode(); |
| 121 | 125 |
Arc a1 = G.addArc(n1, n2), a2 = G.addArc(n4, n1), |
| 122 | 126 |
a3 = G.addArc(n4, n3), a4 = G.addArc(n4, n3), |
| 123 | 127 |
a5 = G.addArc(n2, n4); |
| 124 | 128 |
|
| 125 | 129 |
checkGraphNodeList(G, 4); |
| 126 | 130 |
checkGraphArcList(G, 5); |
| 127 | 131 |
|
| 128 | 132 |
// Check changeSource() and changeTarget() |
| 129 | 133 |
G.changeTarget(a4, n1); |
| 130 | 134 |
|
| 131 | 135 |
checkGraphNodeList(G, 4); |
| 132 | 136 |
checkGraphArcList(G, 5); |
| 133 | 137 |
|
| 134 | 138 |
checkGraphOutArcList(G, n1, 1); |
| 135 | 139 |
checkGraphOutArcList(G, n2, 1); |
| 136 | 140 |
checkGraphOutArcList(G, n3, 0); |
| 137 | 141 |
checkGraphOutArcList(G, n4, 3); |
| 138 | 142 |
|
| 139 | 143 |
checkGraphInArcList(G, n1, 2); |
| 140 | 144 |
checkGraphInArcList(G, n2, 1); |
| 141 | 145 |
checkGraphInArcList(G, n3, 1); |
| 142 | 146 |
checkGraphInArcList(G, n4, 1); |
| 143 | 147 |
|
| 144 | 148 |
checkGraphConArcList(G, 5); |
| 145 | 149 |
|
| 146 | 150 |
G.changeSource(a4, n3); |
| 147 | 151 |
|
| 148 | 152 |
checkGraphNodeList(G, 4); |
| 149 | 153 |
checkGraphArcList(G, 5); |
| 150 | 154 |
|
| 151 | 155 |
checkGraphOutArcList(G, n1, 1); |
| 152 | 156 |
checkGraphOutArcList(G, n2, 1); |
| 153 | 157 |
checkGraphOutArcList(G, n3, 1); |
| 154 | 158 |
checkGraphOutArcList(G, n4, 2); |
| 155 | 159 |
|
| 156 | 160 |
checkGraphInArcList(G, n1, 2); |
| 157 | 161 |
checkGraphInArcList(G, n2, 1); |
| 158 | 162 |
checkGraphInArcList(G, n3, 1); |
| 159 | 163 |
checkGraphInArcList(G, n4, 1); |
| 160 | 164 |
|
| 161 | 165 |
checkGraphConArcList(G, 5); |
| 162 | 166 |
|
| 163 | 167 |
// Check contract() |
| 164 | 168 |
G.contract(n2, n4, false); |
| 165 | 169 |
|
| 166 | 170 |
checkGraphNodeList(G, 3); |
| 167 | 171 |
checkGraphArcList(G, 5); |
| 168 | 172 |
|
| 169 | 173 |
checkGraphOutArcList(G, n1, 1); |
| 170 | 174 |
checkGraphOutArcList(G, n2, 3); |
| 171 | 175 |
checkGraphOutArcList(G, n3, 1); |
| 172 | 176 |
|
| 173 | 177 |
checkGraphInArcList(G, n1, 2); |
| 174 | 178 |
checkGraphInArcList(G, n2, 2); |
| 175 | 179 |
checkGraphInArcList(G, n3, 1); |
| 176 | 180 |
|
| 177 | 181 |
checkGraphConArcList(G, 5); |
| 178 | 182 |
|
| 179 | 183 |
G.contract(n2, n1); |
| 180 | 184 |
|
| 181 | 185 |
checkGraphNodeList(G, 2); |
| 182 | 186 |
checkGraphArcList(G, 3); |
| 183 | 187 |
|
| 184 | 188 |
checkGraphOutArcList(G, n2, 2); |
| 185 | 189 |
checkGraphOutArcList(G, n3, 1); |
| 186 | 190 |
|
| 187 | 191 |
checkGraphInArcList(G, n2, 2); |
| 188 | 192 |
checkGraphInArcList(G, n3, 1); |
| 189 | 193 |
|
| 190 | 194 |
checkGraphConArcList(G, 3); |
| 191 | 195 |
} |
| 192 | 196 |
|
| 193 | 197 |
template <class Digraph> |
| 194 | 198 |
void checkDigraphErase() {
|
| 195 | 199 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 196 | 200 |
|
| 197 | 201 |
Digraph G; |
| 198 | 202 |
Node n1 = G.addNode(), n2 = G.addNode(), |
| 199 | 203 |
n3 = G.addNode(), n4 = G.addNode(); |
| 200 | 204 |
Arc a1 = G.addArc(n1, n2), a2 = G.addArc(n4, n1), |
| 201 | 205 |
a3 = G.addArc(n4, n3), a4 = G.addArc(n3, n1), |
| 202 | 206 |
a5 = G.addArc(n2, n4); |
| 203 | 207 |
|
| 204 | 208 |
// Check arc deletion |
| 205 | 209 |
G.erase(a1); |
| 206 | 210 |
|
| 207 | 211 |
checkGraphNodeList(G, 4); |
| 208 | 212 |
checkGraphArcList(G, 4); |
| 209 | 213 |
|
| 210 | 214 |
checkGraphOutArcList(G, n1, 0); |
| 211 | 215 |
checkGraphOutArcList(G, n2, 1); |
| 212 | 216 |
checkGraphOutArcList(G, n3, 1); |
| 213 | 217 |
checkGraphOutArcList(G, n4, 2); |
| 214 | 218 |
|
| 215 | 219 |
checkGraphInArcList(G, n1, 2); |
| 216 | 220 |
checkGraphInArcList(G, n2, 0); |
| 217 | 221 |
checkGraphInArcList(G, n3, 1); |
| 218 | 222 |
checkGraphInArcList(G, n4, 1); |
| 219 | 223 |
|
| 220 | 224 |
checkGraphConArcList(G, 4); |
| 221 | 225 |
|
| 222 | 226 |
// Check node deletion |
| 223 | 227 |
G.erase(n4); |
| 224 | 228 |
|
| 225 | 229 |
checkGraphNodeList(G, 3); |
| 226 | 230 |
checkGraphArcList(G, 1); |
| 227 | 231 |
|
| 228 | 232 |
checkGraphOutArcList(G, n1, 0); |
| 229 | 233 |
checkGraphOutArcList(G, n2, 0); |
| 230 | 234 |
checkGraphOutArcList(G, n3, 1); |
| 231 | 235 |
checkGraphOutArcList(G, n4, 0); |
| 232 | 236 |
|
| 233 | 237 |
checkGraphInArcList(G, n1, 1); |
| 234 | 238 |
checkGraphInArcList(G, n2, 0); |
| 235 | 239 |
checkGraphInArcList(G, n3, 0); |
| 236 | 240 |
checkGraphInArcList(G, n4, 0); |
| 237 | 241 |
|
| 238 | 242 |
checkGraphConArcList(G, 1); |
| 239 | 243 |
} |
| 240 | 244 |
|
| 241 | 245 |
|
| 242 | 246 |
template <class Digraph> |
| 243 | 247 |
void checkDigraphSnapshot() {
|
| 244 | 248 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 245 | 249 |
|
| 246 | 250 |
Digraph G; |
| 247 | 251 |
Node n1 = G.addNode(), n2 = G.addNode(), n3 = G.addNode(); |
| 248 | 252 |
Arc a1 = G.addArc(n1, n2), a2 = G.addArc(n2, n1), |
| 249 | 253 |
a3 = G.addArc(n2, n3), a4 = G.addArc(n2, n3); |
| 250 | 254 |
|
| 251 | 255 |
typename Digraph::Snapshot snapshot(G); |
| 252 | 256 |
|
| 253 | 257 |
Node n = G.addNode(); |
| 254 | 258 |
G.addArc(n3, n); |
| 255 | 259 |
G.addArc(n, n3); |
| 256 | 260 |
|
| 257 | 261 |
checkGraphNodeList(G, 4); |
| 258 | 262 |
checkGraphArcList(G, 6); |
| 259 | 263 |
|
| 260 | 264 |
snapshot.restore(); |
| 261 | 265 |
|
| 262 | 266 |
checkGraphNodeList(G, 3); |
| 263 | 267 |
checkGraphArcList(G, 4); |
| 264 | 268 |
|
| 265 | 269 |
checkGraphOutArcList(G, n1, 1); |
| 266 | 270 |
checkGraphOutArcList(G, n2, 3); |
| 267 | 271 |
checkGraphOutArcList(G, n3, 0); |
| 268 | 272 |
|
| 269 | 273 |
checkGraphInArcList(G, n1, 1); |
| 270 | 274 |
checkGraphInArcList(G, n2, 1); |
| 271 | 275 |
checkGraphInArcList(G, n3, 2); |
| 272 | 276 |
|
| 273 | 277 |
checkGraphConArcList(G, 4); |
| 274 | 278 |
|
| 275 | 279 |
checkNodeIds(G); |
| 276 | 280 |
checkArcIds(G); |
| 277 | 281 |
checkGraphNodeMap(G); |
| 278 | 282 |
checkGraphArcMap(G); |
| 279 | 283 |
|
| 280 | 284 |
G.addNode(); |
| 281 | 285 |
snapshot.save(G); |
| 282 | 286 |
|
| 283 | 287 |
G.addArc(G.addNode(), G.addNode()); |
| 284 | 288 |
|
| 285 | 289 |
snapshot.restore(); |
| 290 |
snapshot.save(G); |
|
| 291 |
|
|
| 292 |
checkGraphNodeList(G, 4); |
|
| 293 |
checkGraphArcList(G, 4); |
|
| 294 |
|
|
| 295 |
G.addArc(G.addNode(), G.addNode()); |
|
| 296 |
|
|
| 297 |
snapshot.restore(); |
|
| 286 | 298 |
|
| 287 | 299 |
checkGraphNodeList(G, 4); |
| 288 | 300 |
checkGraphArcList(G, 4); |
| 289 | 301 |
} |
| 290 | 302 |
|
| 291 | 303 |
void checkConcepts() {
|
| 292 | 304 |
{ // Checking digraph components
|
| 293 | 305 |
checkConcept<BaseDigraphComponent, BaseDigraphComponent >(); |
| 294 | 306 |
|
| 295 | 307 |
checkConcept<IDableDigraphComponent<>, |
| 296 | 308 |
IDableDigraphComponent<> >(); |
| 297 | 309 |
|
| 298 | 310 |
checkConcept<IterableDigraphComponent<>, |
| 299 | 311 |
IterableDigraphComponent<> >(); |
| 300 | 312 |
|
| 301 | 313 |
checkConcept<MappableDigraphComponent<>, |
| 302 | 314 |
MappableDigraphComponent<> >(); |
| 303 | 315 |
} |
| 304 | 316 |
{ // Checking skeleton digraph
|
| 305 | 317 |
checkConcept<Digraph, Digraph>(); |
| 306 | 318 |
} |
| 307 | 319 |
{ // Checking ListDigraph
|
| 308 | 320 |
checkConcept<Digraph, ListDigraph>(); |
| 309 | 321 |
checkConcept<AlterableDigraphComponent<>, ListDigraph>(); |
| 310 | 322 |
checkConcept<ExtendableDigraphComponent<>, ListDigraph>(); |
| 311 | 323 |
checkConcept<ClearableDigraphComponent<>, ListDigraph>(); |
| 312 | 324 |
checkConcept<ErasableDigraphComponent<>, ListDigraph>(); |
| 313 | 325 |
} |
| 314 | 326 |
{ // Checking SmartDigraph
|
| 315 | 327 |
checkConcept<Digraph, SmartDigraph>(); |
| 316 | 328 |
checkConcept<AlterableDigraphComponent<>, SmartDigraph>(); |
| 317 | 329 |
checkConcept<ExtendableDigraphComponent<>, SmartDigraph>(); |
| 318 | 330 |
checkConcept<ClearableDigraphComponent<>, SmartDigraph>(); |
| 319 | 331 |
} |
| 332 |
{ // Checking StaticDigraph
|
|
| 333 |
checkConcept<Digraph, StaticDigraph>(); |
|
| 334 |
checkConcept<ClearableDigraphComponent<>, StaticDigraph>(); |
|
| 335 |
} |
|
| 320 | 336 |
{ // Checking FullDigraph
|
| 321 | 337 |
checkConcept<Digraph, FullDigraph>(); |
| 322 | 338 |
} |
| 323 | 339 |
} |
| 324 | 340 |
|
| 325 | 341 |
template <typename Digraph> |
| 326 | 342 |
void checkDigraphValidity() {
|
| 327 | 343 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 328 | 344 |
Digraph g; |
| 329 | 345 |
|
| 330 | 346 |
Node |
| 331 | 347 |
n1 = g.addNode(), |
| 332 | 348 |
n2 = g.addNode(), |
| 333 | 349 |
n3 = g.addNode(); |
| 334 | 350 |
|
| 335 | 351 |
Arc |
| 336 | 352 |
e1 = g.addArc(n1, n2), |
| 337 | 353 |
e2 = g.addArc(n2, n3); |
| 338 | 354 |
|
| 339 | 355 |
check(g.valid(n1), "Wrong validity check"); |
| 340 | 356 |
check(g.valid(e1), "Wrong validity check"); |
| 341 | 357 |
|
| 342 | 358 |
check(!g.valid(g.nodeFromId(-1)), "Wrong validity check"); |
| 343 | 359 |
check(!g.valid(g.arcFromId(-1)), "Wrong validity check"); |
| 344 | 360 |
} |
| 345 | 361 |
|
| 346 | 362 |
template <typename Digraph> |
| 347 | 363 |
void checkDigraphValidityErase() {
|
| 348 | 364 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 349 | 365 |
Digraph g; |
| 350 | 366 |
|
| 351 | 367 |
Node |
| 352 | 368 |
n1 = g.addNode(), |
| 353 | 369 |
n2 = g.addNode(), |
| 354 | 370 |
n3 = g.addNode(); |
| 355 | 371 |
|
| 356 | 372 |
Arc |
| 357 | 373 |
e1 = g.addArc(n1, n2), |
| 358 | 374 |
e2 = g.addArc(n2, n3); |
| 359 | 375 |
|
| 360 | 376 |
check(g.valid(n1), "Wrong validity check"); |
| 361 | 377 |
check(g.valid(e1), "Wrong validity check"); |
| 362 | 378 |
|
| 363 | 379 |
g.erase(n1); |
| 364 | 380 |
|
| 365 | 381 |
check(!g.valid(n1), "Wrong validity check"); |
| 366 | 382 |
check(g.valid(n2), "Wrong validity check"); |
| 367 | 383 |
check(g.valid(n3), "Wrong validity check"); |
| 368 | 384 |
check(!g.valid(e1), "Wrong validity check"); |
| 369 | 385 |
check(g.valid(e2), "Wrong validity check"); |
| 370 | 386 |
|
| 371 | 387 |
check(!g.valid(g.nodeFromId(-1)), "Wrong validity check"); |
| 372 | 388 |
check(!g.valid(g.arcFromId(-1)), "Wrong validity check"); |
| 373 | 389 |
} |
| 374 | 390 |
|
| 391 |
void checkStaticDigraph() {
|
|
| 392 |
SmartDigraph g; |
|
| 393 |
SmartDigraph::NodeMap<StaticDigraph::Node> nref(g); |
|
| 394 |
SmartDigraph::ArcMap<StaticDigraph::Arc> aref(g); |
|
| 395 |
|
|
| 396 |
StaticDigraph G; |
|
| 397 |
|
|
| 398 |
checkGraphNodeList(G, 0); |
|
| 399 |
checkGraphArcList(G, 0); |
|
| 400 |
|
|
| 401 |
G.build(g, nref, aref); |
|
| 402 |
|
|
| 403 |
checkGraphNodeList(G, 0); |
|
| 404 |
checkGraphArcList(G, 0); |
|
| 405 |
|
|
| 406 |
SmartDigraph::Node |
|
| 407 |
n1 = g.addNode(), |
|
| 408 |
n2 = g.addNode(), |
|
| 409 |
n3 = g.addNode(); |
|
| 410 |
|
|
| 411 |
G.build(g, nref, aref); |
|
| 412 |
|
|
| 413 |
checkGraphNodeList(G, 3); |
|
| 414 |
checkGraphArcList(G, 0); |
|
| 415 |
|
|
| 416 |
SmartDigraph::Arc a1 = g.addArc(n1, n2); |
|
| 417 |
|
|
| 418 |
G.build(g, nref, aref); |
|
| 419 |
|
|
| 420 |
check(G.source(aref[a1]) == nref[n1] && G.target(aref[a1]) == nref[n2], |
|
| 421 |
"Wrong arc or wrong references"); |
|
| 422 |
checkGraphNodeList(G, 3); |
|
| 423 |
checkGraphArcList(G, 1); |
|
| 424 |
|
|
| 425 |
checkGraphOutArcList(G, nref[n1], 1); |
|
| 426 |
checkGraphOutArcList(G, nref[n2], 0); |
|
| 427 |
checkGraphOutArcList(G, nref[n3], 0); |
|
| 428 |
|
|
| 429 |
checkGraphInArcList(G, nref[n1], 0); |
|
| 430 |
checkGraphInArcList(G, nref[n2], 1); |
|
| 431 |
checkGraphInArcList(G, nref[n3], 0); |
|
| 432 |
|
|
| 433 |
checkGraphConArcList(G, 1); |
|
| 434 |
|
|
| 435 |
SmartDigraph::Arc |
|
| 436 |
a2 = g.addArc(n2, n1), |
|
| 437 |
a3 = g.addArc(n2, n3), |
|
| 438 |
a4 = g.addArc(n2, n3); |
|
| 439 |
|
|
| 440 |
digraphCopy(g, G).nodeRef(nref).run(); |
|
| 441 |
|
|
| 442 |
checkGraphNodeList(G, 3); |
|
| 443 |
checkGraphArcList(G, 4); |
|
| 444 |
|
|
| 445 |
checkGraphOutArcList(G, nref[n1], 1); |
|
| 446 |
checkGraphOutArcList(G, nref[n2], 3); |
|
| 447 |
checkGraphOutArcList(G, nref[n3], 0); |
|
| 448 |
|
|
| 449 |
checkGraphInArcList(G, nref[n1], 1); |
|
| 450 |
checkGraphInArcList(G, nref[n2], 1); |
|
| 451 |
checkGraphInArcList(G, nref[n3], 2); |
|
| 452 |
|
|
| 453 |
checkGraphConArcList(G, 4); |
|
| 454 |
|
|
| 455 |
std::vector<std::pair<int,int> > arcs; |
|
| 456 |
arcs.push_back(std::make_pair(0,1)); |
|
| 457 |
arcs.push_back(std::make_pair(0,2)); |
|
| 458 |
arcs.push_back(std::make_pair(1,3)); |
|
| 459 |
arcs.push_back(std::make_pair(1,2)); |
|
| 460 |
arcs.push_back(std::make_pair(3,0)); |
|
| 461 |
arcs.push_back(std::make_pair(3,3)); |
|
| 462 |
arcs.push_back(std::make_pair(4,2)); |
|
| 463 |
arcs.push_back(std::make_pair(4,3)); |
|
| 464 |
arcs.push_back(std::make_pair(4,1)); |
|
| 465 |
|
|
| 466 |
G.build(6, arcs.begin(), arcs.end()); |
|
| 467 |
|
|
| 468 |
checkGraphNodeList(G, 6); |
|
| 469 |
checkGraphArcList(G, 9); |
|
| 470 |
|
|
| 471 |
checkGraphOutArcList(G, G.node(0), 2); |
|
| 472 |
checkGraphOutArcList(G, G.node(1), 2); |
|
| 473 |
checkGraphOutArcList(G, G.node(2), 0); |
|
| 474 |
checkGraphOutArcList(G, G.node(3), 2); |
|
| 475 |
checkGraphOutArcList(G, G.node(4), 3); |
|
| 476 |
checkGraphOutArcList(G, G.node(5), 0); |
|
| 477 |
|
|
| 478 |
checkGraphInArcList(G, G.node(0), 1); |
|
| 479 |
checkGraphInArcList(G, G.node(1), 2); |
|
| 480 |
checkGraphInArcList(G, G.node(2), 3); |
|
| 481 |
checkGraphInArcList(G, G.node(3), 3); |
|
| 482 |
checkGraphInArcList(G, G.node(4), 0); |
|
| 483 |
checkGraphInArcList(G, G.node(5), 0); |
|
| 484 |
|
|
| 485 |
checkGraphConArcList(G, 9); |
|
| 486 |
|
|
| 487 |
checkNodeIds(G); |
|
| 488 |
checkArcIds(G); |
|
| 489 |
checkGraphNodeMap(G); |
|
| 490 |
checkGraphArcMap(G); |
|
| 491 |
|
|
| 492 |
int n = G.nodeNum(); |
|
| 493 |
int m = G.arcNum(); |
|
| 494 |
check(G.index(G.node(n-1)) == n-1, "Wrong index."); |
|
| 495 |
check(G.index(G.arc(m-1)) == m-1, "Wrong index."); |
|
| 496 |
} |
|
| 497 |
|
|
| 375 | 498 |
void checkFullDigraph(int num) {
|
| 376 | 499 |
typedef FullDigraph Digraph; |
| 377 | 500 |
DIGRAPH_TYPEDEFS(Digraph); |
| 501 |
|
|
| 378 | 502 |
Digraph G(num); |
| 503 |
check(G.nodeNum() == num && G.arcNum() == num * num, "Wrong size"); |
|
| 504 |
|
|
| 505 |
G.resize(num); |
|
| 506 |
check(G.nodeNum() == num && G.arcNum() == num * num, "Wrong size"); |
|
| 379 | 507 |
|
| 380 | 508 |
checkGraphNodeList(G, num); |
| 381 | 509 |
checkGraphArcList(G, num * num); |
| 382 | 510 |
|
| 383 | 511 |
for (NodeIt n(G); n != INVALID; ++n) {
|
| 384 | 512 |
checkGraphOutArcList(G, n, num); |
| 385 | 513 |
checkGraphInArcList(G, n, num); |
| 386 | 514 |
} |
| 387 | 515 |
|
| 388 | 516 |
checkGraphConArcList(G, num * num); |
| 389 | 517 |
|
| 390 | 518 |
checkNodeIds(G); |
| 391 | 519 |
checkArcIds(G); |
| 392 | 520 |
checkGraphNodeMap(G); |
| 393 | 521 |
checkGraphArcMap(G); |
| 394 | 522 |
|
| 395 | 523 |
for (int i = 0; i < G.nodeNum(); ++i) {
|
| 396 | 524 |
check(G.index(G(i)) == i, "Wrong index"); |
| 397 | 525 |
} |
| 398 | 526 |
|
| 399 | 527 |
for (NodeIt s(G); s != INVALID; ++s) {
|
| 400 | 528 |
for (NodeIt t(G); t != INVALID; ++t) {
|
| 401 | 529 |
Arc a = G.arc(s, t); |
| 402 | 530 |
check(G.source(a) == s && G.target(a) == t, "Wrong arc lookup"); |
| 403 | 531 |
} |
| 404 | 532 |
} |
| 405 | 533 |
} |
| 406 | 534 |
|
| 407 | 535 |
void checkDigraphs() {
|
| 408 | 536 |
{ // Checking ListDigraph
|
| 409 | 537 |
checkDigraphBuild<ListDigraph>(); |
| 410 | 538 |
checkDigraphSplit<ListDigraph>(); |
| 411 | 539 |
checkDigraphAlter<ListDigraph>(); |
| 412 | 540 |
checkDigraphErase<ListDigraph>(); |
| 413 | 541 |
checkDigraphSnapshot<ListDigraph>(); |
| 414 | 542 |
checkDigraphValidityErase<ListDigraph>(); |
| 415 | 543 |
} |
| 416 | 544 |
{ // Checking SmartDigraph
|
| 417 | 545 |
checkDigraphBuild<SmartDigraph>(); |
| 418 | 546 |
checkDigraphSplit<SmartDigraph>(); |
| 419 | 547 |
checkDigraphSnapshot<SmartDigraph>(); |
| 420 | 548 |
checkDigraphValidity<SmartDigraph>(); |
| 421 | 549 |
} |
| 550 |
{ // Checking StaticDigraph
|
|
| 551 |
checkStaticDigraph(); |
|
| 552 |
} |
|
| 422 | 553 |
{ // Checking FullDigraph
|
| 423 | 554 |
checkFullDigraph(8); |
| 424 | 555 |
} |
| 425 | 556 |
} |
| 426 | 557 |
|
| 427 | 558 |
int main() {
|
| 428 | 559 |
checkDigraphs(); |
| 429 | 560 |
checkConcepts(); |
| 430 | 561 |
return 0; |
| 431 | 562 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <lemon/concepts/digraph.h> |
| 20 | 20 |
#include <lemon/smart_graph.h> |
| 21 | 21 |
#include <lemon/list_graph.h> |
| 22 | 22 |
#include <lemon/lgf_reader.h> |
| 23 | 23 |
#include <lemon/dijkstra.h> |
| 24 | 24 |
#include <lemon/path.h> |
| 25 | 25 |
#include <lemon/bin_heap.h> |
| 26 | 26 |
|
| 27 | 27 |
#include "graph_test.h" |
| 28 | 28 |
#include "test_tools.h" |
| 29 | 29 |
|
| 30 | 30 |
using namespace lemon; |
| 31 | 31 |
|
| 32 | 32 |
char test_lgf[] = |
| 33 | 33 |
"@nodes\n" |
| 34 | 34 |
"label\n" |
| 35 | 35 |
"0\n" |
| 36 | 36 |
"1\n" |
| 37 | 37 |
"2\n" |
| 38 | 38 |
"3\n" |
| 39 | 39 |
"4\n" |
| 40 | 40 |
"@arcs\n" |
| 41 | 41 |
" label length\n" |
| 42 | 42 |
"0 1 0 1\n" |
| 43 | 43 |
"1 2 1 1\n" |
| 44 | 44 |
"2 3 2 1\n" |
| 45 | 45 |
"0 3 4 5\n" |
| 46 | 46 |
"0 3 5 10\n" |
| 47 | 47 |
"0 3 6 7\n" |
| 48 | 48 |
"4 2 7 1\n" |
| 49 | 49 |
"@attributes\n" |
| 50 | 50 |
"source 0\n" |
| 51 | 51 |
"target 3\n"; |
| 52 | 52 |
|
| 53 | 53 |
void checkDijkstraCompile() |
| 54 | 54 |
{
|
| 55 | 55 |
typedef int VType; |
| 56 | 56 |
typedef concepts::Digraph Digraph; |
| 57 | 57 |
typedef concepts::ReadMap<Digraph::Arc,VType> LengthMap; |
| 58 | 58 |
typedef Dijkstra<Digraph, LengthMap> DType; |
| 59 | 59 |
typedef Digraph::Node Node; |
| 60 | 60 |
typedef Digraph::Arc Arc; |
| 61 | 61 |
|
| 62 | 62 |
Digraph G; |
| 63 |
Node s, t; |
|
| 63 |
Node s, t, n; |
|
| 64 | 64 |
Arc e; |
| 65 | 65 |
VType l; |
| 66 |
int i; |
|
| 66 | 67 |
bool b; |
| 67 | 68 |
DType::DistMap d(G); |
| 68 | 69 |
DType::PredMap p(G); |
| 69 | 70 |
LengthMap length; |
| 70 | 71 |
Path<Digraph> pp; |
| 72 |
concepts::ReadMap<Node,bool> nm; |
|
| 71 | 73 |
|
| 72 | 74 |
{
|
| 73 | 75 |
DType dijkstra_test(G,length); |
| 76 |
const DType& const_dijkstra_test = dijkstra_test; |
|
| 74 | 77 |
|
| 75 | 78 |
dijkstra_test.run(s); |
| 76 | 79 |
dijkstra_test.run(s,t); |
| 77 | 80 |
|
| 81 |
dijkstra_test.init(); |
|
| 82 |
dijkstra_test.addSource(s); |
|
| 83 |
dijkstra_test.addSource(s, 1); |
|
| 84 |
n = dijkstra_test.processNextNode(); |
|
| 85 |
n = const_dijkstra_test.nextNode(); |
|
| 86 |
b = const_dijkstra_test.emptyQueue(); |
|
| 87 |
i = const_dijkstra_test.queueSize(); |
|
| 88 |
|
|
| 89 |
dijkstra_test.start(); |
|
| 90 |
dijkstra_test.start(t); |
|
| 91 |
dijkstra_test.start(nm); |
|
| 92 |
|
|
| 93 |
l = const_dijkstra_test.dist(t); |
|
| 94 |
e = const_dijkstra_test.predArc(t); |
|
| 95 |
s = const_dijkstra_test.predNode(t); |
|
| 96 |
b = const_dijkstra_test.reached(t); |
|
| 97 |
b = const_dijkstra_test.processed(t); |
|
| 98 |
d = const_dijkstra_test.distMap(); |
|
| 99 |
p = const_dijkstra_test.predMap(); |
|
| 100 |
pp = const_dijkstra_test.path(t); |
|
| 101 |
l = const_dijkstra_test.currentDist(t); |
|
| 102 |
} |
|
| 103 |
{
|
|
| 104 |
DType |
|
| 105 |
::SetPredMap<concepts::ReadWriteMap<Node,Arc> > |
|
| 106 |
::SetDistMap<concepts::ReadWriteMap<Node,VType> > |
|
| 107 |
::SetStandardProcessedMap |
|
| 108 |
::SetProcessedMap<concepts::WriteMap<Node,bool> > |
|
| 109 |
::SetOperationTraits<DijkstraDefaultOperationTraits<VType> > |
|
| 110 |
::SetHeap<BinHeap<VType, concepts::ReadWriteMap<Node,int> > > |
|
| 111 |
::SetStandardHeap<BinHeap<VType, concepts::ReadWriteMap<Node,int> > > |
|
| 112 |
::SetHeap<BinHeap<VType, concepts::ReadWriteMap<Node,int> >, |
|
| 113 |
concepts::ReadWriteMap<Node,int> > |
|
| 114 |
::Create dijkstra_test(G,length); |
|
| 115 |
|
|
| 116 |
LengthMap length_map; |
|
| 117 |
concepts::ReadWriteMap<Node,Arc> pred_map; |
|
| 118 |
concepts::ReadWriteMap<Node,VType> dist_map; |
|
| 119 |
concepts::WriteMap<Node,bool> processed_map; |
|
| 120 |
concepts::ReadWriteMap<Node,int> heap_cross_ref; |
|
| 121 |
BinHeap<VType, concepts::ReadWriteMap<Node,int> > heap(heap_cross_ref); |
|
| 122 |
|
|
| 123 |
dijkstra_test |
|
| 124 |
.lengthMap(length_map) |
|
| 125 |
.predMap(pred_map) |
|
| 126 |
.distMap(dist_map) |
|
| 127 |
.processedMap(processed_map) |
|
| 128 |
.heap(heap, heap_cross_ref); |
|
| 129 |
|
|
| 130 |
dijkstra_test.run(s); |
|
| 131 |
dijkstra_test.run(s,t); |
|
| 132 |
|
|
| 133 |
dijkstra_test.addSource(s); |
|
| 134 |
dijkstra_test.addSource(s, 1); |
|
| 135 |
n = dijkstra_test.processNextNode(); |
|
| 136 |
n = dijkstra_test.nextNode(); |
|
| 137 |
b = dijkstra_test.emptyQueue(); |
|
| 138 |
i = dijkstra_test.queueSize(); |
|
| 139 |
|
|
| 140 |
dijkstra_test.start(); |
|
| 141 |
dijkstra_test.start(t); |
|
| 142 |
dijkstra_test.start(nm); |
|
| 143 |
|
|
| 78 | 144 |
l = dijkstra_test.dist(t); |
| 79 | 145 |
e = dijkstra_test.predArc(t); |
| 80 | 146 |
s = dijkstra_test.predNode(t); |
| 81 | 147 |
b = dijkstra_test.reached(t); |
| 82 |
d = dijkstra_test.distMap(); |
|
| 83 |
p = dijkstra_test.predMap(); |
|
| 148 |
b = dijkstra_test.processed(t); |
|
| 84 | 149 |
pp = dijkstra_test.path(t); |
| 85 |
} |
|
| 86 |
{
|
|
| 87 |
DType |
|
| 88 |
::SetPredMap<concepts::ReadWriteMap<Node,Arc> > |
|
| 89 |
::SetDistMap<concepts::ReadWriteMap<Node,VType> > |
|
| 90 |
::SetProcessedMap<concepts::WriteMap<Node,bool> > |
|
| 91 |
::SetStandardProcessedMap |
|
| 92 |
::SetOperationTraits<DijkstraDefaultOperationTraits<VType> > |
|
| 93 |
::SetHeap<BinHeap<VType, concepts::ReadWriteMap<Node,int> > > |
|
| 94 |
::SetStandardHeap<BinHeap<VType, concepts::ReadWriteMap<Node,int> > > |
|
| 95 |
::Create dijkstra_test(G,length); |
|
| 96 |
|
|
| 97 |
dijkstra_test.run(s); |
|
| 98 |
dijkstra_test.run(s,t); |
|
| 99 |
|
|
| 100 |
l = dijkstra_test.dist(t); |
|
| 101 |
e = dijkstra_test.predArc(t); |
|
| 102 |
s = dijkstra_test.predNode(t); |
|
| 103 |
b = dijkstra_test.reached(t); |
|
| 104 |
pp = dijkstra_test.path(t); |
|
| 150 |
l = dijkstra_test.currentDist(t); |
|
| 105 | 151 |
} |
| 106 | 152 |
|
| 107 | 153 |
} |
| 108 | 154 |
|
| 109 | 155 |
void checkDijkstraFunctionCompile() |
| 110 | 156 |
{
|
| 111 | 157 |
typedef int VType; |
| 112 | 158 |
typedef concepts::Digraph Digraph; |
| 113 | 159 |
typedef Digraph::Arc Arc; |
| 114 | 160 |
typedef Digraph::Node Node; |
| 115 | 161 |
typedef concepts::ReadMap<Digraph::Arc,VType> LengthMap; |
| 116 | 162 |
|
| 117 | 163 |
Digraph g; |
| 118 | 164 |
bool b; |
| 119 | 165 |
dijkstra(g,LengthMap()).run(Node()); |
| 120 | 166 |
b=dijkstra(g,LengthMap()).run(Node(),Node()); |
| 121 | 167 |
dijkstra(g,LengthMap()) |
| 122 | 168 |
.predMap(concepts::ReadWriteMap<Node,Arc>()) |
| 123 | 169 |
.distMap(concepts::ReadWriteMap<Node,VType>()) |
| 124 | 170 |
.processedMap(concepts::WriteMap<Node,bool>()) |
| 125 | 171 |
.run(Node()); |
| 126 | 172 |
b=dijkstra(g,LengthMap()) |
| 127 | 173 |
.predMap(concepts::ReadWriteMap<Node,Arc>()) |
| 128 | 174 |
.distMap(concepts::ReadWriteMap<Node,VType>()) |
| 129 | 175 |
.processedMap(concepts::WriteMap<Node,bool>()) |
| 130 | 176 |
.path(concepts::Path<Digraph>()) |
| 131 | 177 |
.dist(VType()) |
| 132 | 178 |
.run(Node(),Node()); |
| 133 | 179 |
} |
| 134 | 180 |
|
| 135 | 181 |
template <class Digraph> |
| 136 | 182 |
void checkDijkstra() {
|
| 137 | 183 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 138 | 184 |
typedef typename Digraph::template ArcMap<int> LengthMap; |
| 139 | 185 |
|
| 140 | 186 |
Digraph G; |
| 141 | 187 |
Node s, t; |
| 142 | 188 |
LengthMap length(G); |
| 143 | 189 |
|
| 144 | 190 |
std::istringstream input(test_lgf); |
| 145 | 191 |
digraphReader(G, input). |
| 146 | 192 |
arcMap("length", length).
|
| 147 | 193 |
node("source", s).
|
| 148 | 194 |
node("target", t).
|
| 149 | 195 |
run(); |
| 150 | 196 |
|
| 151 | 197 |
Dijkstra<Digraph, LengthMap> |
| 152 | 198 |
dijkstra_test(G, length); |
| 153 | 199 |
dijkstra_test.run(s); |
| 154 | 200 |
|
| 155 | 201 |
check(dijkstra_test.dist(t)==3,"Dijkstra found a wrong path."); |
| 156 | 202 |
|
| 157 | 203 |
Path<Digraph> p = dijkstra_test.path(t); |
| 158 | 204 |
check(p.length()==3,"path() found a wrong path."); |
| 159 | 205 |
check(checkPath(G, p),"path() found a wrong path."); |
| 160 | 206 |
check(pathSource(G, p) == s,"path() found a wrong path."); |
| 161 | 207 |
check(pathTarget(G, p) == t,"path() found a wrong path."); |
| 162 | 208 |
|
| 163 | 209 |
for(ArcIt e(G); e!=INVALID; ++e) {
|
| 164 | 210 |
Node u=G.source(e); |
| 165 | 211 |
Node v=G.target(e); |
| 166 | 212 |
check( !dijkstra_test.reached(u) || |
| 167 | 213 |
(dijkstra_test.dist(v) - dijkstra_test.dist(u) <= length[e]), |
| 168 | 214 |
"Wrong output. dist(target)-dist(source)-arc_length=" << |
| 169 | 215 |
dijkstra_test.dist(v) - dijkstra_test.dist(u) - length[e]); |
| 170 | 216 |
} |
| 171 | 217 |
|
| 172 | 218 |
for(NodeIt v(G); v!=INVALID; ++v) {
|
| 173 | 219 |
if (dijkstra_test.reached(v)) {
|
| 174 | 220 |
check(v==s || dijkstra_test.predArc(v)!=INVALID, "Wrong tree."); |
| 175 | 221 |
if (dijkstra_test.predArc(v)!=INVALID ) {
|
| 176 | 222 |
Arc e=dijkstra_test.predArc(v); |
| 177 | 223 |
Node u=G.source(e); |
| 178 | 224 |
check(u==dijkstra_test.predNode(v),"Wrong tree."); |
| 179 | 225 |
check(dijkstra_test.dist(v) - dijkstra_test.dist(u) == length[e], |
| 180 | 226 |
"Wrong distance! Difference: " << |
| 181 | 227 |
std::abs(dijkstra_test.dist(v)-dijkstra_test.dist(u)-length[e])); |
| 182 | 228 |
} |
| 183 | 229 |
} |
| 184 | 230 |
} |
| 185 | 231 |
|
| 186 | 232 |
{
|
| 187 | 233 |
NullMap<Node,Arc> myPredMap; |
| 188 | 234 |
dijkstra(G,length).predMap(myPredMap).run(s); |
| 189 | 235 |
} |
| 190 | 236 |
} |
| 191 | 237 |
|
| 192 | 238 |
int main() {
|
| 193 | 239 |
checkDijkstra<ListDigraph>(); |
| 194 | 240 |
checkDijkstra<SmartDigraph>(); |
| 195 | 241 |
return 0; |
| 196 | 242 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2008 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <iostream> |
| 20 | 20 |
#include <vector> |
| 21 | 21 |
|
| 22 | 22 |
#include <lemon/concepts/digraph.h> |
| 23 | 23 |
#include <lemon/concepts/graph.h> |
| 24 | 24 |
#include <lemon/concept_check.h> |
| 25 | 25 |
|
| 26 | 26 |
#include <lemon/list_graph.h> |
| 27 | 27 |
|
| 28 | 28 |
#include <lemon/edge_set.h> |
| 29 | 29 |
|
| 30 | 30 |
#include "graph_test.h" |
| 31 | 31 |
#include "test_tools.h" |
| 32 | 32 |
|
| 33 | 33 |
using namespace lemon; |
| 34 | 34 |
|
| 35 | 35 |
void checkSmartArcSet() {
|
| 36 |
checkConcept<concepts::Digraph, SmartArcSet< |
|
| 36 |
checkConcept<concepts::Digraph, SmartArcSet<ListDigraph> >(); |
|
| 37 | 37 |
|
| 38 | 38 |
typedef ListDigraph Digraph; |
| 39 | 39 |
typedef SmartArcSet<Digraph> ArcSet; |
| 40 | 40 |
|
| 41 | 41 |
Digraph digraph; |
| 42 | 42 |
Digraph::Node |
| 43 | 43 |
n1 = digraph.addNode(), |
| 44 | 44 |
n2 = digraph.addNode(); |
| 45 | 45 |
|
| 46 | 46 |
Digraph::Arc ga1 = digraph.addArc(n1, n2); |
| 47 | 47 |
|
| 48 | 48 |
ArcSet arc_set(digraph); |
| 49 | 49 |
|
| 50 | 50 |
Digraph::Arc ga2 = digraph.addArc(n2, n1); |
| 51 | 51 |
|
| 52 | 52 |
checkGraphNodeList(arc_set, 2); |
| 53 | 53 |
checkGraphArcList(arc_set, 0); |
| 54 | 54 |
|
| 55 | 55 |
Digraph::Node |
| 56 | 56 |
n3 = digraph.addNode(); |
| 57 | 57 |
checkGraphNodeList(arc_set, 3); |
| 58 | 58 |
checkGraphArcList(arc_set, 0); |
| 59 | 59 |
|
| 60 | 60 |
ArcSet::Arc a1 = arc_set.addArc(n1, n2); |
| 61 | 61 |
check(arc_set.source(a1) == n1 && arc_set.target(a1) == n2, "Wrong arc"); |
| 62 | 62 |
checkGraphNodeList(arc_set, 3); |
| 63 | 63 |
checkGraphArcList(arc_set, 1); |
| 64 | 64 |
|
| 65 | 65 |
checkGraphOutArcList(arc_set, n1, 1); |
| 66 | 66 |
checkGraphOutArcList(arc_set, n2, 0); |
| 67 | 67 |
checkGraphOutArcList(arc_set, n3, 0); |
| 68 | 68 |
|
| 69 | 69 |
checkGraphInArcList(arc_set, n1, 0); |
| 70 | 70 |
checkGraphInArcList(arc_set, n2, 1); |
| 71 | 71 |
checkGraphInArcList(arc_set, n3, 0); |
| 72 | 72 |
|
| 73 | 73 |
checkGraphConArcList(arc_set, 1); |
| 74 | 74 |
|
| 75 | 75 |
ArcSet::Arc a2 = arc_set.addArc(n2, n1), |
| 76 | 76 |
a3 = arc_set.addArc(n2, n3), |
| 77 | 77 |
a4 = arc_set.addArc(n2, n3); |
| 78 | 78 |
checkGraphNodeList(arc_set, 3); |
| 79 | 79 |
checkGraphArcList(arc_set, 4); |
| 80 | 80 |
|
| 81 | 81 |
checkGraphOutArcList(arc_set, n1, 1); |
| 82 | 82 |
checkGraphOutArcList(arc_set, n2, 3); |
| 83 | 83 |
checkGraphOutArcList(arc_set, n3, 0); |
| 84 | 84 |
|
| 85 | 85 |
checkGraphInArcList(arc_set, n1, 1); |
| 86 | 86 |
checkGraphInArcList(arc_set, n2, 1); |
| 87 | 87 |
checkGraphInArcList(arc_set, n3, 2); |
| 88 | 88 |
|
| 89 | 89 |
checkGraphConArcList(arc_set, 4); |
| 90 | 90 |
|
| 91 | 91 |
checkNodeIds(arc_set); |
| 92 | 92 |
checkArcIds(arc_set); |
| 93 | 93 |
checkGraphNodeMap(arc_set); |
| 94 | 94 |
checkGraphArcMap(arc_set); |
| 95 | 95 |
|
| 96 | 96 |
check(arc_set.valid(), "Wrong validity"); |
| 97 | 97 |
digraph.erase(n1); |
| 98 | 98 |
check(!arc_set.valid(), "Wrong validity"); |
| 99 | 99 |
} |
| 100 | 100 |
|
| 101 | 101 |
void checkListArcSet() {
|
| 102 |
checkConcept<concepts::Digraph, SmartArcSet< |
|
| 102 |
checkConcept<concepts::Digraph, SmartArcSet<ListDigraph> >(); |
|
| 103 | 103 |
|
| 104 | 104 |
typedef ListDigraph Digraph; |
| 105 | 105 |
typedef ListArcSet<Digraph> ArcSet; |
| 106 | 106 |
|
| 107 | 107 |
Digraph digraph; |
| 108 | 108 |
Digraph::Node |
| 109 | 109 |
n1 = digraph.addNode(), |
| 110 | 110 |
n2 = digraph.addNode(); |
| 111 | 111 |
|
| 112 | 112 |
Digraph::Arc ga1 = digraph.addArc(n1, n2); |
| 113 | 113 |
|
| 114 | 114 |
ArcSet arc_set(digraph); |
| 115 | 115 |
|
| 116 | 116 |
Digraph::Arc ga2 = digraph.addArc(n2, n1); |
| 117 | 117 |
|
| 118 | 118 |
checkGraphNodeList(arc_set, 2); |
| 119 | 119 |
checkGraphArcList(arc_set, 0); |
| 120 | 120 |
|
| 121 | 121 |
Digraph::Node |
| 122 | 122 |
n3 = digraph.addNode(); |
| 123 | 123 |
checkGraphNodeList(arc_set, 3); |
| 124 | 124 |
checkGraphArcList(arc_set, 0); |
| 125 | 125 |
|
| 126 | 126 |
ArcSet::Arc a1 = arc_set.addArc(n1, n2); |
| 127 | 127 |
check(arc_set.source(a1) == n1 && arc_set.target(a1) == n2, "Wrong arc"); |
| 128 | 128 |
checkGraphNodeList(arc_set, 3); |
| 129 | 129 |
checkGraphArcList(arc_set, 1); |
| 130 | 130 |
|
| 131 | 131 |
checkGraphOutArcList(arc_set, n1, 1); |
| 132 | 132 |
checkGraphOutArcList(arc_set, n2, 0); |
| 133 | 133 |
checkGraphOutArcList(arc_set, n3, 0); |
| 134 | 134 |
|
| 135 | 135 |
checkGraphInArcList(arc_set, n1, 0); |
| 136 | 136 |
checkGraphInArcList(arc_set, n2, 1); |
| 137 | 137 |
checkGraphInArcList(arc_set, n3, 0); |
| 138 | 138 |
|
| 139 | 139 |
checkGraphConArcList(arc_set, 1); |
| 140 | 140 |
|
| 141 | 141 |
ArcSet::Arc a2 = arc_set.addArc(n2, n1), |
| 142 | 142 |
a3 = arc_set.addArc(n2, n3), |
| 143 | 143 |
a4 = arc_set.addArc(n2, n3); |
| 144 | 144 |
checkGraphNodeList(arc_set, 3); |
| 145 | 145 |
checkGraphArcList(arc_set, 4); |
| 146 | 146 |
|
| 147 | 147 |
checkGraphOutArcList(arc_set, n1, 1); |
| 148 | 148 |
checkGraphOutArcList(arc_set, n2, 3); |
| 149 | 149 |
checkGraphOutArcList(arc_set, n3, 0); |
| 150 | 150 |
|
| 151 | 151 |
checkGraphInArcList(arc_set, n1, 1); |
| 152 | 152 |
checkGraphInArcList(arc_set, n2, 1); |
| 153 | 153 |
checkGraphInArcList(arc_set, n3, 2); |
| 154 | 154 |
|
| 155 | 155 |
checkGraphConArcList(arc_set, 4); |
| 156 | 156 |
|
| 157 | 157 |
checkNodeIds(arc_set); |
| 158 | 158 |
checkArcIds(arc_set); |
| 159 | 159 |
checkGraphNodeMap(arc_set); |
| 160 | 160 |
checkGraphArcMap(arc_set); |
| 161 | 161 |
|
| 162 | 162 |
digraph.erase(n1); |
| 163 | 163 |
|
| 164 | 164 |
checkGraphNodeList(arc_set, 2); |
| 165 | 165 |
checkGraphArcList(arc_set, 2); |
| 166 | 166 |
|
| 167 | 167 |
checkGraphOutArcList(arc_set, n2, 2); |
| 168 | 168 |
checkGraphOutArcList(arc_set, n3, 0); |
| 169 | 169 |
|
| 170 | 170 |
checkGraphInArcList(arc_set, n2, 0); |
| 171 | 171 |
checkGraphInArcList(arc_set, n3, 2); |
| 172 | 172 |
|
| 173 | 173 |
checkNodeIds(arc_set); |
| 174 | 174 |
checkArcIds(arc_set); |
| 175 | 175 |
checkGraphNodeMap(arc_set); |
| 176 | 176 |
checkGraphArcMap(arc_set); |
| 177 | 177 |
|
| 178 | 178 |
checkGraphConArcList(arc_set, 2); |
| 179 | 179 |
} |
| 180 | 180 |
|
| 181 | 181 |
void checkSmartEdgeSet() {
|
| 182 |
checkConcept<concepts::Digraph, SmartEdgeSet< |
|
| 182 |
checkConcept<concepts::Digraph, SmartEdgeSet<ListDigraph> >(); |
|
| 183 | 183 |
|
| 184 | 184 |
typedef ListDigraph Digraph; |
| 185 | 185 |
typedef SmartEdgeSet<Digraph> EdgeSet; |
| 186 | 186 |
|
| 187 | 187 |
Digraph digraph; |
| 188 | 188 |
Digraph::Node |
| 189 | 189 |
n1 = digraph.addNode(), |
| 190 | 190 |
n2 = digraph.addNode(); |
| 191 | 191 |
|
| 192 | 192 |
Digraph::Arc ga1 = digraph.addArc(n1, n2); |
| 193 | 193 |
|
| 194 | 194 |
EdgeSet edge_set(digraph); |
| 195 | 195 |
|
| 196 | 196 |
Digraph::Arc ga2 = digraph.addArc(n2, n1); |
| 197 | 197 |
|
| 198 | 198 |
checkGraphNodeList(edge_set, 2); |
| 199 | 199 |
checkGraphArcList(edge_set, 0); |
| 200 | 200 |
checkGraphEdgeList(edge_set, 0); |
| 201 | 201 |
|
| 202 | 202 |
Digraph::Node |
| 203 | 203 |
n3 = digraph.addNode(); |
| 204 | 204 |
checkGraphNodeList(edge_set, 3); |
| 205 | 205 |
checkGraphArcList(edge_set, 0); |
| 206 | 206 |
checkGraphEdgeList(edge_set, 0); |
| 207 | 207 |
|
| 208 | 208 |
EdgeSet::Edge e1 = edge_set.addEdge(n1, n2); |
| 209 | 209 |
check((edge_set.u(e1) == n1 && edge_set.v(e1) == n2) || |
| 210 | 210 |
(edge_set.v(e1) == n1 && edge_set.u(e1) == n2), "Wrong edge"); |
| 211 | 211 |
checkGraphNodeList(edge_set, 3); |
| 212 | 212 |
checkGraphArcList(edge_set, 2); |
| 213 | 213 |
checkGraphEdgeList(edge_set, 1); |
| 214 | 214 |
|
| 215 | 215 |
checkGraphOutArcList(edge_set, n1, 1); |
| 216 | 216 |
checkGraphOutArcList(edge_set, n2, 1); |
| 217 | 217 |
checkGraphOutArcList(edge_set, n3, 0); |
| 218 | 218 |
|
| 219 | 219 |
checkGraphInArcList(edge_set, n1, 1); |
| 220 | 220 |
checkGraphInArcList(edge_set, n2, 1); |
| 221 | 221 |
checkGraphInArcList(edge_set, n3, 0); |
| 222 | 222 |
|
| 223 | 223 |
checkGraphIncEdgeList(edge_set, n1, 1); |
| 224 | 224 |
checkGraphIncEdgeList(edge_set, n2, 1); |
| 225 | 225 |
checkGraphIncEdgeList(edge_set, n3, 0); |
| 226 | 226 |
|
| 227 | 227 |
checkGraphConEdgeList(edge_set, 1); |
| 228 | 228 |
checkGraphConArcList(edge_set, 2); |
| 229 | 229 |
|
| 230 | 230 |
EdgeSet::Edge e2 = edge_set.addEdge(n2, n1), |
| 231 | 231 |
e3 = edge_set.addEdge(n2, n3), |
| 232 | 232 |
e4 = edge_set.addEdge(n2, n3); |
| 233 | 233 |
checkGraphNodeList(edge_set, 3); |
| 234 | 234 |
checkGraphEdgeList(edge_set, 4); |
| 235 | 235 |
|
| 236 | 236 |
checkGraphOutArcList(edge_set, n1, 2); |
| 237 | 237 |
checkGraphOutArcList(edge_set, n2, 4); |
| 238 | 238 |
checkGraphOutArcList(edge_set, n3, 2); |
| 239 | 239 |
|
| 240 | 240 |
checkGraphInArcList(edge_set, n1, 2); |
| 241 | 241 |
checkGraphInArcList(edge_set, n2, 4); |
| 242 | 242 |
checkGraphInArcList(edge_set, n3, 2); |
| 243 | 243 |
|
| 244 | 244 |
checkGraphIncEdgeList(edge_set, n1, 2); |
| 245 | 245 |
checkGraphIncEdgeList(edge_set, n2, 4); |
| 246 | 246 |
checkGraphIncEdgeList(edge_set, n3, 2); |
| 247 | 247 |
|
| 248 | 248 |
checkGraphConEdgeList(edge_set, 4); |
| 249 | 249 |
checkGraphConArcList(edge_set, 8); |
| 250 | 250 |
|
| 251 | 251 |
checkArcDirections(edge_set); |
| 252 | 252 |
|
| 253 | 253 |
checkNodeIds(edge_set); |
| 254 | 254 |
checkArcIds(edge_set); |
| 255 | 255 |
checkEdgeIds(edge_set); |
| 256 | 256 |
checkGraphNodeMap(edge_set); |
| 257 | 257 |
checkGraphArcMap(edge_set); |
| 258 | 258 |
checkGraphEdgeMap(edge_set); |
| 259 | 259 |
|
| 260 | 260 |
check(edge_set.valid(), "Wrong validity"); |
| 261 | 261 |
digraph.erase(n1); |
| 262 | 262 |
check(!edge_set.valid(), "Wrong validity"); |
| 263 | 263 |
} |
| 264 | 264 |
|
| 265 | 265 |
void checkListEdgeSet() {
|
| 266 |
checkConcept<concepts::Digraph, ListEdgeSet< |
|
| 266 |
checkConcept<concepts::Digraph, ListEdgeSet<ListDigraph> >(); |
|
| 267 | 267 |
|
| 268 | 268 |
typedef ListDigraph Digraph; |
| 269 | 269 |
typedef ListEdgeSet<Digraph> EdgeSet; |
| 270 | 270 |
|
| 271 | 271 |
Digraph digraph; |
| 272 | 272 |
Digraph::Node |
| 273 | 273 |
n1 = digraph.addNode(), |
| 274 | 274 |
n2 = digraph.addNode(); |
| 275 | 275 |
|
| 276 | 276 |
Digraph::Arc ga1 = digraph.addArc(n1, n2); |
| 277 | 277 |
|
| 278 | 278 |
EdgeSet edge_set(digraph); |
| 279 | 279 |
|
| 280 | 280 |
Digraph::Arc ga2 = digraph.addArc(n2, n1); |
| 281 | 281 |
|
| 282 | 282 |
checkGraphNodeList(edge_set, 2); |
| 283 | 283 |
checkGraphArcList(edge_set, 0); |
| 284 | 284 |
checkGraphEdgeList(edge_set, 0); |
| 285 | 285 |
|
| 286 | 286 |
Digraph::Node |
| 287 | 287 |
n3 = digraph.addNode(); |
| 288 | 288 |
checkGraphNodeList(edge_set, 3); |
| 289 | 289 |
checkGraphArcList(edge_set, 0); |
| 290 | 290 |
checkGraphEdgeList(edge_set, 0); |
| 291 | 291 |
|
| 292 | 292 |
EdgeSet::Edge e1 = edge_set.addEdge(n1, n2); |
| 293 | 293 |
check((edge_set.u(e1) == n1 && edge_set.v(e1) == n2) || |
| 294 | 294 |
(edge_set.v(e1) == n1 && edge_set.u(e1) == n2), "Wrong edge"); |
| 295 | 295 |
checkGraphNodeList(edge_set, 3); |
| 296 | 296 |
checkGraphArcList(edge_set, 2); |
| 297 | 297 |
checkGraphEdgeList(edge_set, 1); |
| 298 | 298 |
|
| 299 | 299 |
checkGraphOutArcList(edge_set, n1, 1); |
| 300 | 300 |
checkGraphOutArcList(edge_set, n2, 1); |
| 301 | 301 |
checkGraphOutArcList(edge_set, n3, 0); |
| 302 | 302 |
|
| 303 | 303 |
checkGraphInArcList(edge_set, n1, 1); |
| 304 | 304 |
checkGraphInArcList(edge_set, n2, 1); |
| 305 | 305 |
checkGraphInArcList(edge_set, n3, 0); |
| 306 | 306 |
|
| 307 | 307 |
checkGraphIncEdgeList(edge_set, n1, 1); |
| 308 | 308 |
checkGraphIncEdgeList(edge_set, n2, 1); |
| 309 | 309 |
checkGraphIncEdgeList(edge_set, n3, 0); |
| 310 | 310 |
|
| 311 | 311 |
checkGraphConEdgeList(edge_set, 1); |
| 312 | 312 |
checkGraphConArcList(edge_set, 2); |
| 313 | 313 |
|
| 314 | 314 |
EdgeSet::Edge e2 = edge_set.addEdge(n2, n1), |
| 315 | 315 |
e3 = edge_set.addEdge(n2, n3), |
| 316 | 316 |
e4 = edge_set.addEdge(n2, n3); |
| 317 | 317 |
checkGraphNodeList(edge_set, 3); |
| 318 | 318 |
checkGraphEdgeList(edge_set, 4); |
| 319 | 319 |
|
| 320 | 320 |
checkGraphOutArcList(edge_set, n1, 2); |
| 321 | 321 |
checkGraphOutArcList(edge_set, n2, 4); |
| 322 | 322 |
checkGraphOutArcList(edge_set, n3, 2); |
| 323 | 323 |
|
| 324 | 324 |
checkGraphInArcList(edge_set, n1, 2); |
| 325 | 325 |
checkGraphInArcList(edge_set, n2, 4); |
| 326 | 326 |
checkGraphInArcList(edge_set, n3, 2); |
| 327 | 327 |
|
| 328 | 328 |
checkGraphIncEdgeList(edge_set, n1, 2); |
| 329 | 329 |
checkGraphIncEdgeList(edge_set, n2, 4); |
| 330 | 330 |
checkGraphIncEdgeList(edge_set, n3, 2); |
| 331 | 331 |
|
| 332 | 332 |
checkGraphConEdgeList(edge_set, 4); |
| 333 | 333 |
checkGraphConArcList(edge_set, 8); |
| 334 | 334 |
|
| 335 | 335 |
checkArcDirections(edge_set); |
| 336 | 336 |
|
| 337 | 337 |
checkNodeIds(edge_set); |
| 338 | 338 |
checkArcIds(edge_set); |
| 339 | 339 |
checkEdgeIds(edge_set); |
| 340 | 340 |
checkGraphNodeMap(edge_set); |
| 341 | 341 |
checkGraphArcMap(edge_set); |
| 342 | 342 |
checkGraphEdgeMap(edge_set); |
| 343 | 343 |
|
| 344 | 344 |
digraph.erase(n1); |
| 345 | 345 |
|
| 346 | 346 |
checkGraphNodeList(edge_set, 2); |
| 347 | 347 |
checkGraphArcList(edge_set, 4); |
| 348 | 348 |
checkGraphEdgeList(edge_set, 2); |
| 349 | 349 |
|
| 350 | 350 |
checkGraphOutArcList(edge_set, n2, 2); |
| 351 | 351 |
checkGraphOutArcList(edge_set, n3, 2); |
| 352 | 352 |
|
| 353 | 353 |
checkGraphInArcList(edge_set, n2, 2); |
| 354 | 354 |
checkGraphInArcList(edge_set, n3, 2); |
| 355 | 355 |
|
| 356 | 356 |
checkGraphIncEdgeList(edge_set, n2, 2); |
| 357 | 357 |
checkGraphIncEdgeList(edge_set, n3, 2); |
| 358 | 358 |
|
| 359 | 359 |
checkNodeIds(edge_set); |
| 360 | 360 |
checkArcIds(edge_set); |
| 361 | 361 |
checkEdgeIds(edge_set); |
| 362 | 362 |
checkGraphNodeMap(edge_set); |
| 363 | 363 |
checkGraphArcMap(edge_set); |
| 364 | 364 |
checkGraphEdgeMap(edge_set); |
| 365 | 365 |
|
| 366 | 366 |
checkGraphConEdgeList(edge_set, 2); |
| 367 | 367 |
checkGraphConArcList(edge_set, 4); |
| 368 | 368 |
|
| 369 | 369 |
} |
| 370 | 370 |
|
| 371 | 371 |
|
| 372 | 372 |
int main() {
|
| 373 | 373 |
|
| 374 | 374 |
checkSmartArcSet(); |
| 375 | 375 |
checkListArcSet(); |
| 376 | 376 |
checkSmartEdgeSet(); |
| 377 | 377 |
checkListEdgeSet(); |
| 378 | 378 |
|
| 379 | 379 |
return 0; |
| 380 | 380 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <lemon/concepts/graph.h> |
| 20 | 20 |
#include <lemon/list_graph.h> |
| 21 | 21 |
#include <lemon/smart_graph.h> |
| 22 | 22 |
#include <lemon/full_graph.h> |
| 23 | 23 |
#include <lemon/grid_graph.h> |
| 24 | 24 |
#include <lemon/hypercube_graph.h> |
| 25 | 25 |
|
| 26 | 26 |
#include "test_tools.h" |
| 27 | 27 |
#include "graph_test.h" |
| 28 | 28 |
|
| 29 | 29 |
using namespace lemon; |
| 30 | 30 |
using namespace lemon::concepts; |
| 31 | 31 |
|
| 32 | 32 |
template <class Graph> |
| 33 | 33 |
void checkGraphBuild() {
|
| 34 | 34 |
TEMPLATE_GRAPH_TYPEDEFS(Graph); |
| 35 | 35 |
|
| 36 | 36 |
Graph G; |
| 37 | 37 |
checkGraphNodeList(G, 0); |
| 38 | 38 |
checkGraphEdgeList(G, 0); |
| 39 | 39 |
checkGraphArcList(G, 0); |
| 40 | 40 |
|
| 41 |
G.reserveNode(3); |
|
| 42 |
G.reserveEdge(3); |
|
| 43 |
|
|
| 41 | 44 |
Node |
| 42 | 45 |
n1 = G.addNode(), |
| 43 | 46 |
n2 = G.addNode(), |
| 44 | 47 |
n3 = G.addNode(); |
| 45 | 48 |
checkGraphNodeList(G, 3); |
| 46 | 49 |
checkGraphEdgeList(G, 0); |
| 47 | 50 |
checkGraphArcList(G, 0); |
| 48 | 51 |
|
| 49 | 52 |
Edge e1 = G.addEdge(n1, n2); |
| 50 | 53 |
check((G.u(e1) == n1 && G.v(e1) == n2) || (G.u(e1) == n2 && G.v(e1) == n1), |
| 51 | 54 |
"Wrong edge"); |
| 52 | 55 |
|
| 53 | 56 |
checkGraphNodeList(G, 3); |
| 54 | 57 |
checkGraphEdgeList(G, 1); |
| 55 | 58 |
checkGraphArcList(G, 2); |
| 56 | 59 |
|
| 57 | 60 |
checkGraphIncEdgeArcLists(G, n1, 1); |
| 58 | 61 |
checkGraphIncEdgeArcLists(G, n2, 1); |
| 59 | 62 |
checkGraphIncEdgeArcLists(G, n3, 0); |
| 60 | 63 |
|
| 61 | 64 |
checkGraphConEdgeList(G, 1); |
| 62 | 65 |
checkGraphConArcList(G, 2); |
| 63 | 66 |
|
| 64 | 67 |
Edge e2 = G.addEdge(n2, n1), |
| 65 | 68 |
e3 = G.addEdge(n2, n3); |
| 66 | 69 |
|
| 67 | 70 |
checkGraphNodeList(G, 3); |
| 68 | 71 |
checkGraphEdgeList(G, 3); |
| 69 | 72 |
checkGraphArcList(G, 6); |
| 70 | 73 |
|
| 71 | 74 |
checkGraphIncEdgeArcLists(G, n1, 2); |
| 72 | 75 |
checkGraphIncEdgeArcLists(G, n2, 3); |
| 73 | 76 |
checkGraphIncEdgeArcLists(G, n3, 1); |
| 74 | 77 |
|
| 75 | 78 |
checkGraphConEdgeList(G, 3); |
| 76 | 79 |
checkGraphConArcList(G, 6); |
| 77 | 80 |
|
| 78 | 81 |
checkArcDirections(G); |
| 79 | 82 |
|
| 80 | 83 |
checkNodeIds(G); |
| 81 | 84 |
checkArcIds(G); |
| 82 | 85 |
checkEdgeIds(G); |
| 83 | 86 |
checkGraphNodeMap(G); |
| 84 | 87 |
checkGraphArcMap(G); |
| 85 | 88 |
checkGraphEdgeMap(G); |
| 86 | 89 |
} |
| 87 | 90 |
|
| 88 | 91 |
template <class Graph> |
| 89 | 92 |
void checkGraphAlter() {
|
| 90 | 93 |
TEMPLATE_GRAPH_TYPEDEFS(Graph); |
| 91 | 94 |
|
| 92 | 95 |
Graph G; |
| 93 | 96 |
Node n1 = G.addNode(), n2 = G.addNode(), |
| 94 | 97 |
n3 = G.addNode(), n4 = G.addNode(); |
| 95 | 98 |
Edge e1 = G.addEdge(n1, n2), e2 = G.addEdge(n2, n1), |
| 96 | 99 |
e3 = G.addEdge(n2, n3), e4 = G.addEdge(n1, n4), |
| 97 | 100 |
e5 = G.addEdge(n4, n3); |
| 98 | 101 |
|
| 99 | 102 |
checkGraphNodeList(G, 4); |
| 100 | 103 |
checkGraphEdgeList(G, 5); |
| 101 | 104 |
checkGraphArcList(G, 10); |
| 102 | 105 |
|
| 103 | 106 |
// Check changeU() and changeV() |
| 104 | 107 |
if (G.u(e2) == n2) {
|
| 105 | 108 |
G.changeU(e2, n3); |
| 106 | 109 |
} else {
|
| 107 | 110 |
G.changeV(e2, n3); |
| 108 | 111 |
} |
| 109 | 112 |
|
| 110 | 113 |
checkGraphNodeList(G, 4); |
| 111 | 114 |
checkGraphEdgeList(G, 5); |
| 112 | 115 |
checkGraphArcList(G, 10); |
| 113 | 116 |
|
| 114 | 117 |
checkGraphIncEdgeArcLists(G, n1, 3); |
| 115 | 118 |
checkGraphIncEdgeArcLists(G, n2, 2); |
| 116 | 119 |
checkGraphIncEdgeArcLists(G, n3, 3); |
| 117 | 120 |
checkGraphIncEdgeArcLists(G, n4, 2); |
| 118 | 121 |
|
| 119 | 122 |
checkGraphConEdgeList(G, 5); |
| 120 | 123 |
checkGraphConArcList(G, 10); |
| 121 | 124 |
|
| 122 | 125 |
if (G.u(e2) == n1) {
|
| 123 | 126 |
G.changeU(e2, n2); |
| 124 | 127 |
} else {
|
| 125 | 128 |
G.changeV(e2, n2); |
| 126 | 129 |
} |
| 127 | 130 |
|
| 128 | 131 |
checkGraphNodeList(G, 4); |
| 129 | 132 |
checkGraphEdgeList(G, 5); |
| 130 | 133 |
checkGraphArcList(G, 10); |
| 131 | 134 |
|
| 132 | 135 |
checkGraphIncEdgeArcLists(G, n1, 2); |
| 133 | 136 |
checkGraphIncEdgeArcLists(G, n2, 3); |
| 134 | 137 |
checkGraphIncEdgeArcLists(G, n3, 3); |
| 135 | 138 |
checkGraphIncEdgeArcLists(G, n4, 2); |
| 136 | 139 |
|
| 137 | 140 |
checkGraphConEdgeList(G, 5); |
| 138 | 141 |
checkGraphConArcList(G, 10); |
| 139 | 142 |
|
| 140 | 143 |
// Check contract() |
| 141 | 144 |
G.contract(n1, n4, false); |
| 142 | 145 |
|
| 143 | 146 |
checkGraphNodeList(G, 3); |
| 144 | 147 |
checkGraphEdgeList(G, 5); |
| 145 | 148 |
checkGraphArcList(G, 10); |
| 146 | 149 |
|
| 147 | 150 |
checkGraphIncEdgeArcLists(G, n1, 4); |
| 148 | 151 |
checkGraphIncEdgeArcLists(G, n2, 3); |
| 149 | 152 |
checkGraphIncEdgeArcLists(G, n3, 3); |
| 150 | 153 |
|
| 151 | 154 |
checkGraphConEdgeList(G, 5); |
| 152 | 155 |
checkGraphConArcList(G, 10); |
| 153 | 156 |
|
| 154 | 157 |
G.contract(n2, n3); |
| 155 | 158 |
|
| 156 | 159 |
checkGraphNodeList(G, 2); |
| 157 | 160 |
checkGraphEdgeList(G, 3); |
| 158 | 161 |
checkGraphArcList(G, 6); |
| 159 | 162 |
|
| 160 | 163 |
checkGraphIncEdgeArcLists(G, n1, 4); |
| 161 | 164 |
checkGraphIncEdgeArcLists(G, n2, 2); |
| 162 | 165 |
|
| 163 | 166 |
checkGraphConEdgeList(G, 3); |
| 164 | 167 |
checkGraphConArcList(G, 6); |
| 165 | 168 |
} |
| 166 | 169 |
|
| 167 | 170 |
template <class Graph> |
| 168 | 171 |
void checkGraphErase() {
|
| 169 | 172 |
TEMPLATE_GRAPH_TYPEDEFS(Graph); |
| 170 | 173 |
|
| 171 | 174 |
Graph G; |
| 172 | 175 |
Node n1 = G.addNode(), n2 = G.addNode(), |
| 173 | 176 |
n3 = G.addNode(), n4 = G.addNode(); |
| 174 | 177 |
Edge e1 = G.addEdge(n1, n2), e2 = G.addEdge(n2, n1), |
| 175 | 178 |
e3 = G.addEdge(n2, n3), e4 = G.addEdge(n1, n4), |
| 176 | 179 |
e5 = G.addEdge(n4, n3); |
| 177 | 180 |
|
| 178 | 181 |
// Check edge deletion |
| 179 | 182 |
G.erase(e2); |
| 180 | 183 |
|
| 181 | 184 |
checkGraphNodeList(G, 4); |
| 182 | 185 |
checkGraphEdgeList(G, 4); |
| 183 | 186 |
checkGraphArcList(G, 8); |
| 184 | 187 |
|
| 185 | 188 |
checkGraphIncEdgeArcLists(G, n1, 2); |
| 186 | 189 |
checkGraphIncEdgeArcLists(G, n2, 2); |
| 187 | 190 |
checkGraphIncEdgeArcLists(G, n3, 2); |
| 188 | 191 |
checkGraphIncEdgeArcLists(G, n4, 2); |
| 189 | 192 |
|
| 190 | 193 |
checkGraphConEdgeList(G, 4); |
| 191 | 194 |
checkGraphConArcList(G, 8); |
| 192 | 195 |
|
| 193 | 196 |
// Check node deletion |
| 194 | 197 |
G.erase(n3); |
| 195 | 198 |
|
| 196 | 199 |
checkGraphNodeList(G, 3); |
| 197 | 200 |
checkGraphEdgeList(G, 2); |
| 198 | 201 |
checkGraphArcList(G, 4); |
| 199 | 202 |
|
| 200 | 203 |
checkGraphIncEdgeArcLists(G, n1, 2); |
| 201 | 204 |
checkGraphIncEdgeArcLists(G, n2, 1); |
| 202 | 205 |
checkGraphIncEdgeArcLists(G, n4, 1); |
| 203 | 206 |
|
| 204 | 207 |
checkGraphConEdgeList(G, 2); |
| 205 | 208 |
checkGraphConArcList(G, 4); |
| 206 | 209 |
} |
| 207 | 210 |
|
| 208 | 211 |
|
| 209 | 212 |
template <class Graph> |
| 210 | 213 |
void checkGraphSnapshot() {
|
| 211 | 214 |
TEMPLATE_GRAPH_TYPEDEFS(Graph); |
| 212 | 215 |
|
| 213 | 216 |
Graph G; |
| 214 | 217 |
Node n1 = G.addNode(), n2 = G.addNode(), n3 = G.addNode(); |
| 215 | 218 |
Edge e1 = G.addEdge(n1, n2), e2 = G.addEdge(n2, n1), |
| 216 | 219 |
e3 = G.addEdge(n2, n3); |
| 217 | 220 |
|
| 218 | 221 |
checkGraphNodeList(G, 3); |
| 219 | 222 |
checkGraphEdgeList(G, 3); |
| 220 | 223 |
checkGraphArcList(G, 6); |
| 221 | 224 |
|
| 222 | 225 |
typename Graph::Snapshot snapshot(G); |
| 223 | 226 |
|
| 224 | 227 |
Node n = G.addNode(); |
| 225 | 228 |
G.addEdge(n3, n); |
| 226 | 229 |
G.addEdge(n, n3); |
| 227 | 230 |
G.addEdge(n3, n2); |
| 228 | 231 |
|
| 229 | 232 |
checkGraphNodeList(G, 4); |
| 230 | 233 |
checkGraphEdgeList(G, 6); |
| 231 | 234 |
checkGraphArcList(G, 12); |
| 232 | 235 |
|
| 233 | 236 |
snapshot.restore(); |
| 234 | 237 |
|
| 235 | 238 |
checkGraphNodeList(G, 3); |
| 236 | 239 |
checkGraphEdgeList(G, 3); |
| 237 | 240 |
checkGraphArcList(G, 6); |
| 238 | 241 |
|
| 239 | 242 |
checkGraphIncEdgeArcLists(G, n1, 2); |
| 240 | 243 |
checkGraphIncEdgeArcLists(G, n2, 3); |
| 241 | 244 |
checkGraphIncEdgeArcLists(G, n3, 1); |
| 242 | 245 |
|
| 243 | 246 |
checkGraphConEdgeList(G, 3); |
| 244 | 247 |
checkGraphConArcList(G, 6); |
| 245 | 248 |
|
| 246 | 249 |
checkNodeIds(G); |
| 247 | 250 |
checkEdgeIds(G); |
| 248 | 251 |
checkArcIds(G); |
| 249 | 252 |
checkGraphNodeMap(G); |
| 250 | 253 |
checkGraphEdgeMap(G); |
| 251 | 254 |
checkGraphArcMap(G); |
| 252 | 255 |
|
| 253 | 256 |
G.addNode(); |
| 254 | 257 |
snapshot.save(G); |
| 255 | 258 |
|
| 256 | 259 |
G.addEdge(G.addNode(), G.addNode()); |
| 257 | 260 |
|
| 258 | 261 |
snapshot.restore(); |
| 262 |
snapshot.save(G); |
|
| 263 |
|
|
| 264 |
checkGraphNodeList(G, 4); |
|
| 265 |
checkGraphEdgeList(G, 3); |
|
| 266 |
checkGraphArcList(G, 6); |
|
| 267 |
|
|
| 268 |
G.addEdge(G.addNode(), G.addNode()); |
|
| 269 |
|
|
| 270 |
snapshot.restore(); |
|
| 259 | 271 |
|
| 260 | 272 |
checkGraphNodeList(G, 4); |
| 261 | 273 |
checkGraphEdgeList(G, 3); |
| 262 | 274 |
checkGraphArcList(G, 6); |
| 263 | 275 |
} |
| 264 | 276 |
|
| 265 | 277 |
void checkFullGraph(int num) {
|
| 266 | 278 |
typedef FullGraph Graph; |
| 267 | 279 |
GRAPH_TYPEDEFS(Graph); |
| 268 | 280 |
|
| 269 | 281 |
Graph G(num); |
| 282 |
check(G.nodeNum() == num && G.edgeNum() == num * (num - 1) / 2, |
|
| 283 |
"Wrong size"); |
|
| 284 |
|
|
| 285 |
G.resize(num); |
|
| 286 |
check(G.nodeNum() == num && G.edgeNum() == num * (num - 1) / 2, |
|
| 287 |
"Wrong size"); |
|
| 288 |
|
|
| 270 | 289 |
checkGraphNodeList(G, num); |
| 271 | 290 |
checkGraphEdgeList(G, num * (num - 1) / 2); |
| 272 | 291 |
|
| 273 | 292 |
for (NodeIt n(G); n != INVALID; ++n) {
|
| 274 | 293 |
checkGraphOutArcList(G, n, num - 1); |
| 275 | 294 |
checkGraphInArcList(G, n, num - 1); |
| 276 | 295 |
checkGraphIncEdgeList(G, n, num - 1); |
| 277 | 296 |
} |
| 278 | 297 |
|
| 279 | 298 |
checkGraphConArcList(G, num * (num - 1)); |
| 280 | 299 |
checkGraphConEdgeList(G, num * (num - 1) / 2); |
| 281 | 300 |
|
| 282 | 301 |
checkArcDirections(G); |
| 283 | 302 |
|
| 284 | 303 |
checkNodeIds(G); |
| 285 | 304 |
checkArcIds(G); |
| 286 | 305 |
checkEdgeIds(G); |
| 287 | 306 |
checkGraphNodeMap(G); |
| 288 | 307 |
checkGraphArcMap(G); |
| 289 | 308 |
checkGraphEdgeMap(G); |
| 290 | 309 |
|
| 291 | 310 |
|
| 292 | 311 |
for (int i = 0; i < G.nodeNum(); ++i) {
|
| 293 | 312 |
check(G.index(G(i)) == i, "Wrong index"); |
| 294 | 313 |
} |
| 295 | 314 |
|
| 296 | 315 |
for (NodeIt u(G); u != INVALID; ++u) {
|
| 297 | 316 |
for (NodeIt v(G); v != INVALID; ++v) {
|
| 298 | 317 |
Edge e = G.edge(u, v); |
| 299 | 318 |
Arc a = G.arc(u, v); |
| 300 | 319 |
if (u == v) {
|
| 301 | 320 |
check(e == INVALID, "Wrong edge lookup"); |
| 302 | 321 |
check(a == INVALID, "Wrong arc lookup"); |
| 303 | 322 |
} else {
|
| 304 | 323 |
check((G.u(e) == u && G.v(e) == v) || |
| 305 | 324 |
(G.u(e) == v && G.v(e) == u), "Wrong edge lookup"); |
| 306 | 325 |
check(G.source(a) == u && G.target(a) == v, "Wrong arc lookup"); |
| 307 | 326 |
} |
| 308 | 327 |
} |
| 309 | 328 |
} |
| 310 | 329 |
} |
| 311 | 330 |
|
| 312 | 331 |
void checkConcepts() {
|
| 313 | 332 |
{ // Checking graph components
|
| 314 | 333 |
checkConcept<BaseGraphComponent, BaseGraphComponent >(); |
| 315 | 334 |
|
| 316 | 335 |
checkConcept<IDableGraphComponent<>, |
| 317 | 336 |
IDableGraphComponent<> >(); |
| 318 | 337 |
|
| 319 | 338 |
checkConcept<IterableGraphComponent<>, |
| 320 | 339 |
IterableGraphComponent<> >(); |
| 321 | 340 |
|
| 322 | 341 |
checkConcept<MappableGraphComponent<>, |
| 323 | 342 |
MappableGraphComponent<> >(); |
| 324 | 343 |
} |
| 325 | 344 |
{ // Checking skeleton graph
|
| 326 | 345 |
checkConcept<Graph, Graph>(); |
| 327 | 346 |
} |
| 328 | 347 |
{ // Checking ListGraph
|
| 329 | 348 |
checkConcept<Graph, ListGraph>(); |
| 330 | 349 |
checkConcept<AlterableGraphComponent<>, ListGraph>(); |
| 331 | 350 |
checkConcept<ExtendableGraphComponent<>, ListGraph>(); |
| 332 | 351 |
checkConcept<ClearableGraphComponent<>, ListGraph>(); |
| 333 | 352 |
checkConcept<ErasableGraphComponent<>, ListGraph>(); |
| 334 | 353 |
} |
| 335 | 354 |
{ // Checking SmartGraph
|
| 336 | 355 |
checkConcept<Graph, SmartGraph>(); |
| 337 | 356 |
checkConcept<AlterableGraphComponent<>, SmartGraph>(); |
| 338 | 357 |
checkConcept<ExtendableGraphComponent<>, SmartGraph>(); |
| 339 | 358 |
checkConcept<ClearableGraphComponent<>, SmartGraph>(); |
| 340 | 359 |
} |
| 341 | 360 |
{ // Checking FullGraph
|
| 342 | 361 |
checkConcept<Graph, FullGraph>(); |
| 343 | 362 |
} |
| 344 | 363 |
{ // Checking GridGraph
|
| 345 | 364 |
checkConcept<Graph, GridGraph>(); |
| 346 | 365 |
} |
| 347 | 366 |
{ // Checking HypercubeGraph
|
| 348 | 367 |
checkConcept<Graph, HypercubeGraph>(); |
| 349 | 368 |
} |
| 350 | 369 |
} |
| 351 | 370 |
|
| 352 | 371 |
template <typename Graph> |
| 353 | 372 |
void checkGraphValidity() {
|
| 354 | 373 |
TEMPLATE_GRAPH_TYPEDEFS(Graph); |
| 355 | 374 |
Graph g; |
| 356 | 375 |
|
| 357 | 376 |
Node |
| 358 | 377 |
n1 = g.addNode(), |
| 359 | 378 |
n2 = g.addNode(), |
| 360 | 379 |
n3 = g.addNode(); |
| 361 | 380 |
|
| 362 | 381 |
Edge |
| 363 | 382 |
e1 = g.addEdge(n1, n2), |
| 364 | 383 |
e2 = g.addEdge(n2, n3); |
| 365 | 384 |
|
| 366 | 385 |
check(g.valid(n1), "Wrong validity check"); |
| 367 | 386 |
check(g.valid(e1), "Wrong validity check"); |
| 368 | 387 |
check(g.valid(g.direct(e1, true)), "Wrong validity check"); |
| 369 | 388 |
|
| 370 | 389 |
check(!g.valid(g.nodeFromId(-1)), "Wrong validity check"); |
| 371 | 390 |
check(!g.valid(g.edgeFromId(-1)), "Wrong validity check"); |
| 372 | 391 |
check(!g.valid(g.arcFromId(-1)), "Wrong validity check"); |
| 373 | 392 |
} |
| 374 | 393 |
|
| 375 | 394 |
template <typename Graph> |
| 376 | 395 |
void checkGraphValidityErase() {
|
| 377 | 396 |
TEMPLATE_GRAPH_TYPEDEFS(Graph); |
| 378 | 397 |
Graph g; |
| 379 | 398 |
|
| 380 | 399 |
Node |
| 381 | 400 |
n1 = g.addNode(), |
| 382 | 401 |
n2 = g.addNode(), |
| 383 | 402 |
n3 = g.addNode(); |
| 384 | 403 |
|
| 385 | 404 |
Edge |
| 386 | 405 |
e1 = g.addEdge(n1, n2), |
| 387 | 406 |
e2 = g.addEdge(n2, n3); |
| 388 | 407 |
|
| 389 | 408 |
check(g.valid(n1), "Wrong validity check"); |
| 390 | 409 |
check(g.valid(e1), "Wrong validity check"); |
| 391 | 410 |
check(g.valid(g.direct(e1, true)), "Wrong validity check"); |
| 392 | 411 |
|
| 393 | 412 |
g.erase(n1); |
| 394 | 413 |
|
| 395 | 414 |
check(!g.valid(n1), "Wrong validity check"); |
| 396 | 415 |
check(g.valid(n2), "Wrong validity check"); |
| 397 | 416 |
check(g.valid(n3), "Wrong validity check"); |
| 398 | 417 |
check(!g.valid(e1), "Wrong validity check"); |
| 399 | 418 |
check(g.valid(e2), "Wrong validity check"); |
| 400 | 419 |
|
| 401 | 420 |
check(!g.valid(g.nodeFromId(-1)), "Wrong validity check"); |
| 402 | 421 |
check(!g.valid(g.edgeFromId(-1)), "Wrong validity check"); |
| 403 | 422 |
check(!g.valid(g.arcFromId(-1)), "Wrong validity check"); |
| 404 | 423 |
} |
| 405 | 424 |
|
| 406 | 425 |
void checkGridGraph(int width, int height) {
|
| 407 | 426 |
typedef GridGraph Graph; |
| 408 | 427 |
GRAPH_TYPEDEFS(Graph); |
| 409 | 428 |
Graph G(width, height); |
| 410 | 429 |
|
| 411 | 430 |
check(G.width() == width, "Wrong column number"); |
| 412 | 431 |
check(G.height() == height, "Wrong row number"); |
| 413 | 432 |
|
| 433 |
G.resize(width, height); |
|
| 434 |
check(G.width() == width, "Wrong column number"); |
|
| 435 |
check(G.height() == height, "Wrong row number"); |
|
| 436 |
|
|
| 414 | 437 |
for (int i = 0; i < width; ++i) {
|
| 415 | 438 |
for (int j = 0; j < height; ++j) {
|
| 416 | 439 |
check(G.col(G(i, j)) == i, "Wrong column"); |
| 417 | 440 |
check(G.row(G(i, j)) == j, "Wrong row"); |
| 418 | 441 |
check(G.pos(G(i, j)).x == i, "Wrong column"); |
| 419 | 442 |
check(G.pos(G(i, j)).y == j, "Wrong row"); |
| 420 | 443 |
} |
| 421 | 444 |
} |
| 422 | 445 |
|
| 423 | 446 |
for (int j = 0; j < height; ++j) {
|
| 424 | 447 |
for (int i = 0; i < width - 1; ++i) {
|
| 425 | 448 |
check(G.source(G.right(G(i, j))) == G(i, j), "Wrong right"); |
| 426 | 449 |
check(G.target(G.right(G(i, j))) == G(i + 1, j), "Wrong right"); |
| 427 | 450 |
} |
| 428 | 451 |
check(G.right(G(width - 1, j)) == INVALID, "Wrong right"); |
| 429 | 452 |
} |
| 430 | 453 |
|
| 431 | 454 |
for (int j = 0; j < height; ++j) {
|
| 432 | 455 |
for (int i = 1; i < width; ++i) {
|
| 433 | 456 |
check(G.source(G.left(G(i, j))) == G(i, j), "Wrong left"); |
| 434 | 457 |
check(G.target(G.left(G(i, j))) == G(i - 1, j), "Wrong left"); |
| 435 | 458 |
} |
| 436 | 459 |
check(G.left(G(0, j)) == INVALID, "Wrong left"); |
| 437 | 460 |
} |
| 438 | 461 |
|
| 439 | 462 |
for (int i = 0; i < width; ++i) {
|
| 440 | 463 |
for (int j = 0; j < height - 1; ++j) {
|
| 441 | 464 |
check(G.source(G.up(G(i, j))) == G(i, j), "Wrong up"); |
| 442 | 465 |
check(G.target(G.up(G(i, j))) == G(i, j + 1), "Wrong up"); |
| 443 | 466 |
} |
| 444 | 467 |
check(G.up(G(i, height - 1)) == INVALID, "Wrong up"); |
| 445 | 468 |
} |
| 446 | 469 |
|
| 447 | 470 |
for (int i = 0; i < width; ++i) {
|
| 448 | 471 |
for (int j = 1; j < height; ++j) {
|
| 449 | 472 |
check(G.source(G.down(G(i, j))) == G(i, j), "Wrong down"); |
| 450 | 473 |
check(G.target(G.down(G(i, j))) == G(i, j - 1), "Wrong down"); |
| 451 | 474 |
} |
| 452 | 475 |
check(G.down(G(i, 0)) == INVALID, "Wrong down"); |
| 453 | 476 |
} |
| 454 | 477 |
|
| 455 | 478 |
checkGraphNodeList(G, width * height); |
| 456 | 479 |
checkGraphEdgeList(G, width * (height - 1) + (width - 1) * height); |
| 457 | 480 |
checkGraphArcList(G, 2 * (width * (height - 1) + (width - 1) * height)); |
| 458 | 481 |
|
| 459 | 482 |
for (NodeIt n(G); n != INVALID; ++n) {
|
| 460 | 483 |
int nb = 4; |
| 461 | 484 |
if (G.col(n) == 0) --nb; |
| 462 | 485 |
if (G.col(n) == width - 1) --nb; |
| 463 | 486 |
if (G.row(n) == 0) --nb; |
| 464 | 487 |
if (G.row(n) == height - 1) --nb; |
| 465 | 488 |
|
| 466 | 489 |
checkGraphOutArcList(G, n, nb); |
| 467 | 490 |
checkGraphInArcList(G, n, nb); |
| 468 | 491 |
checkGraphIncEdgeList(G, n, nb); |
| 469 | 492 |
} |
| 470 | 493 |
|
| 471 | 494 |
checkArcDirections(G); |
| 472 | 495 |
|
| 473 | 496 |
checkGraphConArcList(G, 2 * (width * (height - 1) + (width - 1) * height)); |
| 474 | 497 |
checkGraphConEdgeList(G, width * (height - 1) + (width - 1) * height); |
| 475 | 498 |
|
| 476 | 499 |
checkNodeIds(G); |
| 477 | 500 |
checkArcIds(G); |
| 478 | 501 |
checkEdgeIds(G); |
| 479 | 502 |
checkGraphNodeMap(G); |
| 480 | 503 |
checkGraphArcMap(G); |
| 481 | 504 |
checkGraphEdgeMap(G); |
| 482 | 505 |
|
| 483 | 506 |
} |
| 484 | 507 |
|
| 485 | 508 |
void checkHypercubeGraph(int dim) {
|
| 486 | 509 |
GRAPH_TYPEDEFS(HypercubeGraph); |
| 487 | 510 |
|
| 488 | 511 |
HypercubeGraph G(dim); |
| 512 |
check(G.dimension() == dim, "Wrong dimension"); |
|
| 513 |
|
|
| 514 |
G.resize(dim); |
|
| 515 |
check(G.dimension() == dim, "Wrong dimension"); |
|
| 516 |
|
|
| 489 | 517 |
checkGraphNodeList(G, 1 << dim); |
| 490 | 518 |
checkGraphEdgeList(G, dim * (1 << (dim-1))); |
| 491 | 519 |
checkGraphArcList(G, dim * (1 << dim)); |
| 492 | 520 |
|
| 493 | 521 |
Node n = G.nodeFromId(dim); |
| 494 | 522 |
|
| 495 | 523 |
for (NodeIt n(G); n != INVALID; ++n) {
|
| 496 | 524 |
checkGraphIncEdgeList(G, n, dim); |
| 497 | 525 |
for (IncEdgeIt e(G, n); e != INVALID; ++e) {
|
| 498 | 526 |
check( (G.u(e) == n && |
| 499 | 527 |
G.id(G.v(e)) == (G.id(n) ^ (1 << G.dimension(e)))) || |
| 500 | 528 |
(G.v(e) == n && |
| 501 | 529 |
G.id(G.u(e)) == (G.id(n) ^ (1 << G.dimension(e)))), |
| 502 | 530 |
"Wrong edge or wrong dimension"); |
| 503 | 531 |
} |
| 504 | 532 |
|
| 505 | 533 |
checkGraphOutArcList(G, n, dim); |
| 506 | 534 |
for (OutArcIt a(G, n); a != INVALID; ++a) {
|
| 507 | 535 |
check(G.source(a) == n && |
| 508 | 536 |
G.id(G.target(a)) == (G.id(n) ^ (1 << G.dimension(a))), |
| 509 | 537 |
"Wrong arc or wrong dimension"); |
| 510 | 538 |
} |
| 511 | 539 |
|
| 512 | 540 |
checkGraphInArcList(G, n, dim); |
| 513 | 541 |
for (InArcIt a(G, n); a != INVALID; ++a) {
|
| 514 | 542 |
check(G.target(a) == n && |
| 515 | 543 |
G.id(G.source(a)) == (G.id(n) ^ (1 << G.dimension(a))), |
| 516 | 544 |
"Wrong arc or wrong dimension"); |
| 517 | 545 |
} |
| 518 | 546 |
} |
| 519 | 547 |
|
| 520 | 548 |
checkGraphConArcList(G, (1 << dim) * dim); |
| 521 | 549 |
checkGraphConEdgeList(G, dim * (1 << (dim-1))); |
| 522 | 550 |
|
| 523 | 551 |
checkArcDirections(G); |
| 524 | 552 |
|
| 525 | 553 |
checkNodeIds(G); |
| 526 | 554 |
checkArcIds(G); |
| 527 | 555 |
checkEdgeIds(G); |
| 528 | 556 |
checkGraphNodeMap(G); |
| 529 | 557 |
checkGraphArcMap(G); |
| 530 | 558 |
checkGraphEdgeMap(G); |
| 531 | 559 |
} |
| 532 | 560 |
|
| 533 | 561 |
void checkGraphs() {
|
| 534 | 562 |
{ // Checking ListGraph
|
| 535 | 563 |
checkGraphBuild<ListGraph>(); |
| 536 | 564 |
checkGraphAlter<ListGraph>(); |
| 537 | 565 |
checkGraphErase<ListGraph>(); |
| 538 | 566 |
checkGraphSnapshot<ListGraph>(); |
| 539 | 567 |
checkGraphValidityErase<ListGraph>(); |
| 540 | 568 |
} |
| 541 | 569 |
{ // Checking SmartGraph
|
| 542 | 570 |
checkGraphBuild<SmartGraph>(); |
| 543 | 571 |
checkGraphSnapshot<SmartGraph>(); |
| 544 | 572 |
checkGraphValidity<SmartGraph>(); |
| 545 | 573 |
} |
| 546 | 574 |
{ // Checking FullGraph
|
| 547 | 575 |
checkFullGraph(7); |
| 548 | 576 |
checkFullGraph(8); |
| 549 | 577 |
} |
| 550 | 578 |
{ // Checking GridGraph
|
| 551 | 579 |
checkGridGraph(5, 8); |
| 552 | 580 |
checkGridGraph(8, 5); |
| 553 | 581 |
checkGridGraph(5, 5); |
| 554 | 582 |
checkGridGraph(0, 0); |
| 555 | 583 |
checkGridGraph(1, 1); |
| 556 | 584 |
} |
| 557 | 585 |
{ // Checking HypercubeGraph
|
| 558 | 586 |
checkHypercubeGraph(1); |
| 559 | 587 |
checkHypercubeGraph(2); |
| 560 | 588 |
checkHypercubeGraph(3); |
| 561 | 589 |
checkHypercubeGraph(4); |
| 562 | 590 |
} |
| 563 | 591 |
} |
| 564 | 592 |
|
| 565 | 593 |
int main() {
|
| 566 | 594 |
checkConcepts(); |
| 567 | 595 |
checkGraphs(); |
| 568 | 596 |
return 0; |
| 569 | 597 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <cstdlib> |
| 20 | 20 |
#include <ctime> |
| 21 | 21 |
|
| 22 | 22 |
#include <lemon/random.h> |
| 23 | 23 |
#include <lemon/list_graph.h> |
| 24 | 24 |
#include <lemon/smart_graph.h> |
| 25 | 25 |
#include <lemon/maps.h> |
| 26 | 26 |
|
| 27 | 27 |
#include "graph_test.h" |
| 28 | 28 |
#include "test_tools.h" |
| 29 | 29 |
|
| 30 | 30 |
using namespace lemon; |
| 31 | 31 |
|
| 32 | 32 |
template <typename Digraph> |
| 33 | 33 |
void checkFindArcs() {
|
| 34 | 34 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 35 | 35 |
|
| 36 | 36 |
{
|
| 37 | 37 |
Digraph digraph; |
| 38 | 38 |
for (int i = 0; i < 10; ++i) {
|
| 39 | 39 |
digraph.addNode(); |
| 40 | 40 |
} |
| 41 |
DescriptorMap<Digraph, Node> nodes(digraph); |
|
| 42 |
typename DescriptorMap<Digraph, Node>::InverseMap invNodes(nodes); |
|
| 41 |
RangeIdMap<Digraph, Node> nodes(digraph); |
|
| 42 |
typename RangeIdMap<Digraph, Node>::InverseMap invNodes(nodes); |
|
| 43 | 43 |
for (int i = 0; i < 100; ++i) {
|
| 44 | 44 |
int src = rnd[invNodes.size()]; |
| 45 | 45 |
int trg = rnd[invNodes.size()]; |
| 46 | 46 |
digraph.addArc(invNodes[src], invNodes[trg]); |
| 47 | 47 |
} |
| 48 | 48 |
typename Digraph::template ArcMap<bool> found(digraph, false); |
| 49 |
|
|
| 49 |
RangeIdMap<Digraph, Arc> arcs(digraph); |
|
| 50 | 50 |
for (NodeIt src(digraph); src != INVALID; ++src) {
|
| 51 | 51 |
for (NodeIt trg(digraph); trg != INVALID; ++trg) {
|
| 52 | 52 |
for (ConArcIt<Digraph> con(digraph, src, trg); con != INVALID; ++con) {
|
| 53 | 53 |
check(digraph.source(con) == src, "Wrong source."); |
| 54 | 54 |
check(digraph.target(con) == trg, "Wrong target."); |
| 55 | 55 |
check(found[con] == false, "The arc found already."); |
| 56 | 56 |
found[con] = true; |
| 57 | 57 |
} |
| 58 | 58 |
} |
| 59 | 59 |
} |
| 60 | 60 |
for (ArcIt it(digraph); it != INVALID; ++it) {
|
| 61 | 61 |
check(found[it] == true, "The arc is not found."); |
| 62 | 62 |
} |
| 63 | 63 |
} |
| 64 | 64 |
|
| 65 | 65 |
{
|
| 66 | 66 |
int num = 5; |
| 67 | 67 |
Digraph fg; |
| 68 | 68 |
std::vector<Node> nodes; |
| 69 | 69 |
for (int i = 0; i < num; ++i) {
|
| 70 | 70 |
nodes.push_back(fg.addNode()); |
| 71 | 71 |
} |
| 72 | 72 |
for (int i = 0; i < num * num; ++i) {
|
| 73 | 73 |
fg.addArc(nodes[i / num], nodes[i % num]); |
| 74 | 74 |
} |
| 75 | 75 |
check(countNodes(fg) == num, "Wrong node number."); |
| 76 | 76 |
check(countArcs(fg) == num*num, "Wrong arc number."); |
| 77 | 77 |
for (NodeIt src(fg); src != INVALID; ++src) {
|
| 78 | 78 |
for (NodeIt trg(fg); trg != INVALID; ++trg) {
|
| 79 | 79 |
ConArcIt<Digraph> con(fg, src, trg); |
| 80 | 80 |
check(con != INVALID, "There is no connecting arc."); |
| 81 | 81 |
check(fg.source(con) == src, "Wrong source."); |
| 82 | 82 |
check(fg.target(con) == trg, "Wrong target."); |
| 83 | 83 |
check(++con == INVALID, "There is more connecting arc."); |
| 84 | 84 |
} |
| 85 | 85 |
} |
| 86 | 86 |
ArcLookUp<Digraph> al1(fg); |
| 87 | 87 |
DynArcLookUp<Digraph> al2(fg); |
| 88 | 88 |
AllArcLookUp<Digraph> al3(fg); |
| 89 | 89 |
for (NodeIt src(fg); src != INVALID; ++src) {
|
| 90 | 90 |
for (NodeIt trg(fg); trg != INVALID; ++trg) {
|
| 91 | 91 |
Arc con1 = al1(src, trg); |
| 92 | 92 |
Arc con2 = al2(src, trg); |
| 93 | 93 |
Arc con3 = al3(src, trg); |
| 94 | 94 |
Arc con4 = findArc(fg, src, trg); |
| 95 | 95 |
check(con1 == con2 && con2 == con3 && con3 == con4, |
| 96 | 96 |
"Different results.") |
| 97 | 97 |
check(con1 != INVALID, "There is no connecting arc."); |
| 98 | 98 |
check(fg.source(con1) == src, "Wrong source."); |
| 99 | 99 |
check(fg.target(con1) == trg, "Wrong target."); |
| 100 | 100 |
check(al3(src, trg, con3) == INVALID, |
| 101 | 101 |
"There is more connecting arc."); |
| 102 | 102 |
check(findArc(fg, src, trg, con4) == INVALID, |
| 103 | 103 |
"There is more connecting arc."); |
| 104 | 104 |
} |
| 105 | 105 |
} |
| 106 | 106 |
} |
| 107 | 107 |
} |
| 108 | 108 |
|
| 109 | 109 |
template <typename Graph> |
| 110 | 110 |
void checkFindEdges() {
|
| 111 | 111 |
TEMPLATE_GRAPH_TYPEDEFS(Graph); |
| 112 | 112 |
Graph graph; |
| 113 | 113 |
for (int i = 0; i < 10; ++i) {
|
| 114 | 114 |
graph.addNode(); |
| 115 | 115 |
} |
| 116 |
DescriptorMap<Graph, Node> nodes(graph); |
|
| 117 |
typename DescriptorMap<Graph, Node>::InverseMap invNodes(nodes); |
|
| 116 |
RangeIdMap<Graph, Node> nodes(graph); |
|
| 117 |
typename RangeIdMap<Graph, Node>::InverseMap invNodes(nodes); |
|
| 118 | 118 |
for (int i = 0; i < 100; ++i) {
|
| 119 | 119 |
int src = rnd[invNodes.size()]; |
| 120 | 120 |
int trg = rnd[invNodes.size()]; |
| 121 | 121 |
graph.addEdge(invNodes[src], invNodes[trg]); |
| 122 | 122 |
} |
| 123 | 123 |
typename Graph::template EdgeMap<int> found(graph, 0); |
| 124 |
|
|
| 124 |
RangeIdMap<Graph, Edge> edges(graph); |
|
| 125 | 125 |
for (NodeIt src(graph); src != INVALID; ++src) {
|
| 126 | 126 |
for (NodeIt trg(graph); trg != INVALID; ++trg) {
|
| 127 | 127 |
for (ConEdgeIt<Graph> con(graph, src, trg); con != INVALID; ++con) {
|
| 128 | 128 |
check( (graph.u(con) == src && graph.v(con) == trg) || |
| 129 | 129 |
(graph.v(con) == src && graph.u(con) == trg), |
| 130 | 130 |
"Wrong end nodes."); |
| 131 | 131 |
++found[con]; |
| 132 | 132 |
check(found[con] <= 2, "The edge found more than twice."); |
| 133 | 133 |
} |
| 134 | 134 |
} |
| 135 | 135 |
} |
| 136 | 136 |
for (EdgeIt it(graph); it != INVALID; ++it) {
|
| 137 | 137 |
check( (graph.u(it) != graph.v(it) && found[it] == 2) || |
| 138 | 138 |
(graph.u(it) == graph.v(it) && found[it] == 1), |
| 139 | 139 |
"The edge is not found correctly."); |
| 140 | 140 |
} |
| 141 | 141 |
} |
| 142 | 142 |
|
| 143 | 143 |
template <class Digraph> |
| 144 | 144 |
void checkDeg() |
| 145 | 145 |
{
|
| 146 | 146 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 147 | 147 |
|
| 148 | 148 |
const int nodeNum = 10; |
| 149 | 149 |
const int arcNum = 100; |
| 150 | 150 |
Digraph digraph; |
| 151 | 151 |
InDegMap<Digraph> inDeg(digraph); |
| 152 | 152 |
OutDegMap<Digraph> outDeg(digraph); |
| 153 | 153 |
std::vector<Node> nodes(nodeNum); |
| 154 | 154 |
for (int i = 0; i < nodeNum; ++i) {
|
| 155 | 155 |
nodes[i] = digraph.addNode(); |
| 156 | 156 |
} |
| 157 | 157 |
std::vector<Arc> arcs(arcNum); |
| 158 | 158 |
for (int i = 0; i < arcNum; ++i) {
|
| 159 | 159 |
arcs[i] = digraph.addArc(nodes[rnd[nodeNum]], nodes[rnd[nodeNum]]); |
| 160 | 160 |
} |
| 161 | 161 |
for (int i = 0; i < nodeNum; ++i) {
|
| 162 | 162 |
check(inDeg[nodes[i]] == countInArcs(digraph, nodes[i]), |
| 163 | 163 |
"Wrong in degree map"); |
| 164 | 164 |
} |
| 165 | 165 |
for (int i = 0; i < nodeNum; ++i) {
|
| 166 | 166 |
check(outDeg[nodes[i]] == countOutArcs(digraph, nodes[i]), |
| 167 | 167 |
"Wrong out degree map"); |
| 168 | 168 |
} |
| 169 | 169 |
} |
| 170 | 170 |
|
| 171 | 171 |
template <class Digraph> |
| 172 | 172 |
void checkSnapDeg() |
| 173 | 173 |
{
|
| 174 | 174 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 175 | 175 |
|
| 176 | 176 |
Digraph g; |
| 177 | 177 |
Node n1=g.addNode(); |
| 178 | 178 |
Node n2=g.addNode(); |
| 179 | 179 |
|
| 180 | 180 |
InDegMap<Digraph> ind(g); |
| 181 | 181 |
|
| 182 | 182 |
g.addArc(n1,n2); |
| 183 | 183 |
|
| 184 | 184 |
typename Digraph::Snapshot snap(g); |
| 185 | 185 |
|
| 186 | 186 |
OutDegMap<Digraph> outd(g); |
| 187 | 187 |
|
| 188 | 188 |
check(ind[n1]==0 && ind[n2]==1, "Wrong InDegMap value."); |
| 189 | 189 |
check(outd[n1]==1 && outd[n2]==0, "Wrong OutDegMap value."); |
| 190 | 190 |
|
| 191 | 191 |
g.addArc(n1,n2); |
| 192 | 192 |
g.addArc(n2,n1); |
| 193 | 193 |
|
| 194 | 194 |
check(ind[n1]==1 && ind[n2]==2, "Wrong InDegMap value."); |
| 195 | 195 |
check(outd[n1]==2 && outd[n2]==1, "Wrong OutDegMap value."); |
| 196 | 196 |
|
| 197 | 197 |
snap.restore(); |
| 198 | 198 |
|
| 199 | 199 |
check(ind[n1]==0 && ind[n2]==1, "Wrong InDegMap value."); |
| 200 | 200 |
check(outd[n1]==1 && outd[n2]==0, "Wrong OutDegMap value."); |
| 201 | 201 |
} |
| 202 | 202 |
|
| 203 | 203 |
int main() {
|
| 204 | 204 |
// Checking ConArcIt, ConEdgeIt, ArcLookUp, AllArcLookUp, and DynArcLookUp |
| 205 | 205 |
checkFindArcs<ListDigraph>(); |
| 206 | 206 |
checkFindArcs<SmartDigraph>(); |
| 207 | 207 |
checkFindEdges<ListGraph>(); |
| 208 | 208 |
checkFindEdges<SmartGraph>(); |
| 209 | 209 |
|
| 210 | 210 |
// Checking In/OutDegMap (and Snapshot feature) |
| 211 | 211 |
checkDeg<ListDigraph>(); |
| 212 | 212 |
checkDeg<SmartDigraph>(); |
| 213 | 213 |
checkSnapDeg<ListDigraph>(); |
| 214 | 214 |
checkSnapDeg<SmartDigraph>(); |
| 215 | 215 |
|
| 216 | 216 |
return 0; |
| 217 | 217 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <sstream> |
| 20 | 20 |
|
| 21 | 21 |
#include <lemon/smart_graph.h> |
| 22 |
#include <lemon/adaptors.h> |
|
| 23 |
#include <lemon/concepts/digraph.h> |
|
| 24 |
#include <lemon/concepts/maps.h> |
|
| 25 |
#include <lemon/lgf_reader.h> |
|
| 22 | 26 |
#include <lemon/hao_orlin.h> |
| 23 | 27 |
|
| 24 |
#include <lemon/lgf_reader.h> |
|
| 25 | 28 |
#include "test_tools.h" |
| 26 | 29 |
|
| 27 | 30 |
using namespace lemon; |
| 28 | 31 |
using namespace std; |
| 29 | 32 |
|
| 30 | 33 |
const std::string lgf = |
| 31 | 34 |
"@nodes\n" |
| 32 | 35 |
"label\n" |
| 33 | 36 |
"0\n" |
| 34 | 37 |
"1\n" |
| 35 | 38 |
"2\n" |
| 36 | 39 |
"3\n" |
| 37 | 40 |
"4\n" |
| 38 | 41 |
"5\n" |
| 39 | 42 |
"@edges\n" |
| 40 |
" label capacity\n" |
|
| 41 |
"0 1 0 2\n" |
|
| 42 |
"1 2 1 2\n" |
|
| 43 |
"2 0 2 2\n" |
|
| 44 |
"3 4 3 2\n" |
|
| 45 |
"4 5 4 2\n" |
|
| 46 |
"5 3 5 2\n" |
|
| 47 |
"2 3 6 3\n"; |
|
| 43 |
" cap1 cap2 cap3\n" |
|
| 44 |
"0 1 1 1 1 \n" |
|
| 45 |
"0 2 2 2 4 \n" |
|
| 46 |
"1 2 4 4 4 \n" |
|
| 47 |
"3 4 1 1 1 \n" |
|
| 48 |
"3 5 2 2 4 \n" |
|
| 49 |
"4 5 4 4 4 \n" |
|
| 50 |
"5 4 4 4 4 \n" |
|
| 51 |
"2 3 1 6 6 \n" |
|
| 52 |
"4 0 1 6 6 \n"; |
|
| 53 |
|
|
| 54 |
void checkHaoOrlinCompile() |
|
| 55 |
{
|
|
| 56 |
typedef int Value; |
|
| 57 |
typedef concepts::Digraph Digraph; |
|
| 58 |
|
|
| 59 |
typedef Digraph::Node Node; |
|
| 60 |
typedef Digraph::Arc Arc; |
|
| 61 |
typedef concepts::ReadMap<Arc, Value> CapMap; |
|
| 62 |
typedef concepts::WriteMap<Node, bool> CutMap; |
|
| 63 |
|
|
| 64 |
Digraph g; |
|
| 65 |
Node n; |
|
| 66 |
CapMap cap; |
|
| 67 |
CutMap cut; |
|
| 68 |
Value v; |
|
| 69 |
|
|
| 70 |
HaoOrlin<Digraph, CapMap> ho_test(g, cap); |
|
| 71 |
const HaoOrlin<Digraph, CapMap>& |
|
| 72 |
const_ho_test = ho_test; |
|
| 73 |
|
|
| 74 |
ho_test.init(); |
|
| 75 |
ho_test.init(n); |
|
| 76 |
ho_test.calculateOut(); |
|
| 77 |
ho_test.calculateIn(); |
|
| 78 |
ho_test.run(); |
|
| 79 |
ho_test.run(n); |
|
| 80 |
|
|
| 81 |
v = const_ho_test.minCutValue(); |
|
| 82 |
v = const_ho_test.minCutMap(cut); |
|
| 83 |
} |
|
| 84 |
|
|
| 85 |
template <typename Graph, typename CapMap, typename CutMap> |
|
| 86 |
typename CapMap::Value |
|
| 87 |
cutValue(const Graph& graph, const CapMap& cap, const CutMap& cut) |
|
| 88 |
{
|
|
| 89 |
typename CapMap::Value sum = 0; |
|
| 90 |
for (typename Graph::ArcIt a(graph); a != INVALID; ++a) {
|
|
| 91 |
if (cut[graph.source(a)] && !cut[graph.target(a)]) |
|
| 92 |
sum += cap[a]; |
|
| 93 |
} |
|
| 94 |
return sum; |
|
| 95 |
} |
|
| 48 | 96 |
|
| 49 | 97 |
int main() {
|
| 50 |
SmartGraph graph; |
|
| 51 |
SmartGraph::EdgeMap<int> capacity(graph); |
|
| 98 |
SmartDigraph graph; |
|
| 99 |
SmartDigraph::ArcMap<int> cap1(graph), cap2(graph), cap3(graph); |
|
| 100 |
SmartDigraph::NodeMap<bool> cut(graph); |
|
| 52 | 101 |
|
| 53 |
istringstream lgfs(lgf); |
|
| 54 |
graphReader(graph, lgfs). |
|
| 55 |
|
|
| 102 |
istringstream input(lgf); |
|
| 103 |
digraphReader(graph, input) |
|
| 104 |
.arcMap("cap1", cap1)
|
|
| 105 |
.arcMap("cap2", cap2)
|
|
| 106 |
.arcMap("cap3", cap3)
|
|
| 107 |
.run(); |
|
| 56 | 108 |
|
| 57 |
HaoOrlin<SmartGraph, SmartGraph::EdgeMap<int> > ho(graph, capacity); |
|
| 58 |
ho.run(); |
|
| 109 |
{
|
|
| 110 |
HaoOrlin<SmartDigraph> ho(graph, cap1); |
|
| 111 |
ho.run(); |
|
| 112 |
ho.minCutMap(cut); |
|
| 113 |
|
|
| 114 |
check(ho.minCutValue() == 1, "Wrong cut value"); |
|
| 115 |
check(ho.minCutValue() == cutValue(graph, cap1, cut), "Wrong cut value"); |
|
| 116 |
} |
|
| 117 |
{
|
|
| 118 |
HaoOrlin<SmartDigraph> ho(graph, cap2); |
|
| 119 |
ho.run(); |
|
| 120 |
ho.minCutMap(cut); |
|
| 59 | 121 |
|
| 60 |
check(ho.minCutValue() == |
|
| 122 |
check(ho.minCutValue() == 1, "Wrong cut value"); |
|
| 123 |
check(ho.minCutValue() == cutValue(graph, cap2, cut), "Wrong cut value"); |
|
| 124 |
} |
|
| 125 |
{
|
|
| 126 |
HaoOrlin<SmartDigraph> ho(graph, cap3); |
|
| 127 |
ho.run(); |
|
| 128 |
ho.minCutMap(cut); |
|
| 129 |
|
|
| 130 |
check(ho.minCutValue() == 1, "Wrong cut value"); |
|
| 131 |
check(ho.minCutValue() == cutValue(graph, cap3, cut), "Wrong cut value"); |
|
| 132 |
} |
|
| 133 |
|
|
| 134 |
typedef Undirector<SmartDigraph> UGraph; |
|
| 135 |
UGraph ugraph(graph); |
|
| 136 |
|
|
| 137 |
{
|
|
| 138 |
HaoOrlin<UGraph, SmartDigraph::ArcMap<int> > ho(ugraph, cap1); |
|
| 139 |
ho.run(); |
|
| 140 |
ho.minCutMap(cut); |
|
| 141 |
|
|
| 142 |
check(ho.minCutValue() == 2, "Wrong cut value"); |
|
| 143 |
check(ho.minCutValue() == cutValue(ugraph, cap1, cut), "Wrong cut value"); |
|
| 144 |
} |
|
| 145 |
{
|
|
| 146 |
HaoOrlin<UGraph, SmartDigraph::ArcMap<int> > ho(ugraph, cap2); |
|
| 147 |
ho.run(); |
|
| 148 |
ho.minCutMap(cut); |
|
| 149 |
|
|
| 150 |
check(ho.minCutValue() == 5, "Wrong cut value"); |
|
| 151 |
check(ho.minCutValue() == cutValue(ugraph, cap2, cut), "Wrong cut value"); |
|
| 152 |
} |
|
| 153 |
{
|
|
| 154 |
HaoOrlin<UGraph, SmartDigraph::ArcMap<int> > ho(ugraph, cap3); |
|
| 155 |
ho.run(); |
|
| 156 |
ho.minCutMap(cut); |
|
| 157 |
|
|
| 158 |
check(ho.minCutValue() == 5, "Wrong cut value"); |
|
| 159 |
check(ho.minCutValue() == cutValue(ugraph, cap3, cut), "Wrong cut value"); |
|
| 160 |
} |
|
| 61 | 161 |
|
| 62 | 162 |
return 0; |
| 63 | 163 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <iostream> |
| 20 | 20 |
#include <fstream> |
| 21 | 21 |
#include <string> |
| 22 | 22 |
#include <vector> |
| 23 | 23 |
|
| 24 | 24 |
#include <lemon/concept_check.h> |
| 25 | 25 |
#include <lemon/concepts/heap.h> |
| 26 | 26 |
|
| 27 | 27 |
#include <lemon/smart_graph.h> |
| 28 |
|
|
| 29 | 28 |
#include <lemon/lgf_reader.h> |
| 30 | 29 |
#include <lemon/dijkstra.h> |
| 31 | 30 |
#include <lemon/maps.h> |
| 32 | 31 |
|
| 33 | 32 |
#include <lemon/bin_heap.h> |
| 33 |
#include <lemon/fourary_heap.h> |
|
| 34 |
#include <lemon/kary_heap.h> |
|
| 35 |
#include <lemon/fib_heap.h> |
|
| 36 |
#include <lemon/pairing_heap.h> |
|
| 37 |
#include <lemon/radix_heap.h> |
|
| 38 |
#include <lemon/binom_heap.h> |
|
| 39 |
#include <lemon/bucket_heap.h> |
|
| 34 | 40 |
|
| 35 | 41 |
#include "test_tools.h" |
| 36 | 42 |
|
| 37 | 43 |
using namespace lemon; |
| 38 | 44 |
using namespace lemon::concepts; |
| 39 | 45 |
|
| 40 | 46 |
typedef ListDigraph Digraph; |
| 41 | 47 |
DIGRAPH_TYPEDEFS(Digraph); |
| 42 | 48 |
|
| 43 | 49 |
char test_lgf[] = |
| 44 | 50 |
"@nodes\n" |
| 45 | 51 |
"label\n" |
| 46 | 52 |
"0\n" |
| 47 | 53 |
"1\n" |
| 48 | 54 |
"2\n" |
| 49 | 55 |
"3\n" |
| 50 | 56 |
"4\n" |
| 51 | 57 |
"5\n" |
| 52 | 58 |
"6\n" |
| 53 | 59 |
"7\n" |
| 54 | 60 |
"8\n" |
| 55 | 61 |
"9\n" |
| 56 | 62 |
"@arcs\n" |
| 57 | 63 |
" label capacity\n" |
| 58 | 64 |
"0 5 0 94\n" |
| 59 | 65 |
"3 9 1 11\n" |
| 60 | 66 |
"8 7 2 83\n" |
| 61 | 67 |
"1 2 3 94\n" |
| 62 | 68 |
"5 7 4 35\n" |
| 63 | 69 |
"7 4 5 84\n" |
| 64 | 70 |
"9 5 6 38\n" |
| 65 | 71 |
"0 4 7 96\n" |
| 66 | 72 |
"6 7 8 6\n" |
| 67 | 73 |
"3 1 9 27\n" |
| 68 | 74 |
"5 2 10 77\n" |
| 69 | 75 |
"5 6 11 69\n" |
| 70 | 76 |
"6 5 12 41\n" |
| 71 | 77 |
"4 6 13 70\n" |
| 72 | 78 |
"3 2 14 45\n" |
| 73 | 79 |
"7 9 15 93\n" |
| 74 | 80 |
"5 9 16 50\n" |
| 75 | 81 |
"9 0 17 94\n" |
| 76 | 82 |
"9 6 18 67\n" |
| 77 | 83 |
"0 9 19 86\n" |
| 78 | 84 |
"@attributes\n" |
| 79 | 85 |
"source 3\n"; |
| 80 | 86 |
|
| 81 | 87 |
int test_seq[] = { 2, 28, 19, 27, 33, 25, 13, 41, 10, 26, 1, 9, 4, 34};
|
| 82 | 88 |
int test_inc[] = {20, 28, 34, 16, 0, 46, 44, 0, 42, 32, 14, 8, 6, 37};
|
| 83 | 89 |
|
| 84 | 90 |
int test_len = sizeof(test_seq) / sizeof(test_seq[0]); |
| 85 | 91 |
|
| 86 | 92 |
template <typename Heap> |
| 87 | 93 |
void heapSortTest() {
|
| 88 | 94 |
RangeMap<int> map(test_len, -1); |
| 89 |
|
|
| 90 | 95 |
Heap heap(map); |
| 91 | 96 |
|
| 92 | 97 |
std::vector<int> v(test_len); |
| 93 |
|
|
| 94 | 98 |
for (int i = 0; i < test_len; ++i) {
|
| 95 | 99 |
v[i] = test_seq[i]; |
| 96 | 100 |
heap.push(i, v[i]); |
| 97 | 101 |
} |
| 98 | 102 |
std::sort(v.begin(), v.end()); |
| 99 | 103 |
for (int i = 0; i < test_len; ++i) {
|
| 100 |
check(v[i] == heap.prio() |
|
| 104 |
check(v[i] == heap.prio(), "Wrong order in heap sort."); |
|
| 101 | 105 |
heap.pop(); |
| 102 | 106 |
} |
| 103 | 107 |
} |
| 104 | 108 |
|
| 105 | 109 |
template <typename Heap> |
| 106 | 110 |
void heapIncreaseTest() {
|
| 107 | 111 |
RangeMap<int> map(test_len, -1); |
| 108 | 112 |
|
| 109 | 113 |
Heap heap(map); |
| 110 | 114 |
|
| 111 | 115 |
std::vector<int> v(test_len); |
| 112 |
|
|
| 113 | 116 |
for (int i = 0; i < test_len; ++i) {
|
| 114 | 117 |
v[i] = test_seq[i]; |
| 115 | 118 |
heap.push(i, v[i]); |
| 116 | 119 |
} |
| 117 | 120 |
for (int i = 0; i < test_len; ++i) {
|
| 118 | 121 |
v[i] += test_inc[i]; |
| 119 | 122 |
heap.increase(i, v[i]); |
| 120 | 123 |
} |
| 121 | 124 |
std::sort(v.begin(), v.end()); |
| 122 | 125 |
for (int i = 0; i < test_len; ++i) {
|
| 123 |
check(v[i] == heap.prio() |
|
| 126 |
check(v[i] == heap.prio(), "Wrong order in heap increase test."); |
|
| 124 | 127 |
heap.pop(); |
| 125 | 128 |
} |
| 126 | 129 |
} |
| 127 | 130 |
|
| 128 |
|
|
| 129 |
|
|
| 130 | 131 |
template <typename Heap> |
| 131 | 132 |
void dijkstraHeapTest(const Digraph& digraph, const IntArcMap& length, |
| 132 | 133 |
Node source) {
|
| 133 | 134 |
|
| 134 | 135 |
typename Dijkstra<Digraph, IntArcMap>::template SetStandardHeap<Heap>:: |
| 135 | 136 |
Create dijkstra(digraph, length); |
| 136 | 137 |
|
| 137 | 138 |
dijkstra.run(source); |
| 138 | 139 |
|
| 139 | 140 |
for(ArcIt a(digraph); a != INVALID; ++a) {
|
| 140 | 141 |
Node s = digraph.source(a); |
| 141 | 142 |
Node t = digraph.target(a); |
| 142 | 143 |
if (dijkstra.reached(s)) {
|
| 143 | 144 |
check( dijkstra.dist(t) - dijkstra.dist(s) <= length[a], |
| 144 |
"Error in |
|
| 145 |
"Error in shortest path tree."); |
|
| 145 | 146 |
} |
| 146 | 147 |
} |
| 147 | 148 |
|
| 148 | 149 |
for(NodeIt n(digraph); n != INVALID; ++n) {
|
| 149 | 150 |
if ( dijkstra.reached(n) && dijkstra.predArc(n) != INVALID ) {
|
| 150 | 151 |
Arc a = dijkstra.predArc(n); |
| 151 | 152 |
Node s = digraph.source(a); |
| 152 | 153 |
check( dijkstra.dist(n) - dijkstra.dist(s) == length[a], |
| 153 |
"Error in |
|
| 154 |
"Error in shortest path tree."); |
|
| 154 | 155 |
} |
| 155 | 156 |
} |
| 156 | 157 |
|
| 157 | 158 |
} |
| 158 | 159 |
|
| 159 | 160 |
int main() {
|
| 160 | 161 |
|
| 161 | 162 |
typedef int Item; |
| 162 | 163 |
typedef int Prio; |
| 163 | 164 |
typedef RangeMap<int> ItemIntMap; |
| 164 | 165 |
|
| 165 | 166 |
Digraph digraph; |
| 166 | 167 |
IntArcMap length(digraph); |
| 167 | 168 |
Node source; |
| 168 | 169 |
|
| 169 | 170 |
std::istringstream input(test_lgf); |
| 170 | 171 |
digraphReader(digraph, input). |
| 171 | 172 |
arcMap("capacity", length).
|
| 172 | 173 |
node("source", source).
|
| 173 | 174 |
run(); |
| 174 | 175 |
|
| 176 |
// BinHeap |
|
| 175 | 177 |
{
|
| 176 | 178 |
typedef BinHeap<Prio, ItemIntMap> IntHeap; |
| 177 | 179 |
checkConcept<Heap<Prio, ItemIntMap>, IntHeap>(); |
| 178 | 180 |
heapSortTest<IntHeap>(); |
| 179 | 181 |
heapIncreaseTest<IntHeap>(); |
| 180 | 182 |
|
| 181 | 183 |
typedef BinHeap<Prio, IntNodeMap > NodeHeap; |
| 182 | 184 |
checkConcept<Heap<Prio, IntNodeMap >, NodeHeap>(); |
| 183 | 185 |
dijkstraHeapTest<NodeHeap>(digraph, length, source); |
| 184 | 186 |
} |
| 185 | 187 |
|
| 188 |
// FouraryHeap |
|
| 189 |
{
|
|
| 190 |
typedef FouraryHeap<Prio, ItemIntMap> IntHeap; |
|
| 191 |
checkConcept<Heap<Prio, ItemIntMap>, IntHeap>(); |
|
| 192 |
heapSortTest<IntHeap>(); |
|
| 193 |
heapIncreaseTest<IntHeap>(); |
|
| 194 |
|
|
| 195 |
typedef FouraryHeap<Prio, IntNodeMap > NodeHeap; |
|
| 196 |
checkConcept<Heap<Prio, IntNodeMap >, NodeHeap>(); |
|
| 197 |
dijkstraHeapTest<NodeHeap>(digraph, length, source); |
|
| 198 |
} |
|
| 199 |
|
|
| 200 |
// KaryHeap |
|
| 201 |
{
|
|
| 202 |
typedef KaryHeap<Prio, ItemIntMap> IntHeap; |
|
| 203 |
checkConcept<Heap<Prio, ItemIntMap>, IntHeap>(); |
|
| 204 |
heapSortTest<IntHeap>(); |
|
| 205 |
heapIncreaseTest<IntHeap>(); |
|
| 206 |
|
|
| 207 |
typedef KaryHeap<Prio, IntNodeMap > NodeHeap; |
|
| 208 |
checkConcept<Heap<Prio, IntNodeMap >, NodeHeap>(); |
|
| 209 |
dijkstraHeapTest<NodeHeap>(digraph, length, source); |
|
| 210 |
} |
|
| 211 |
|
|
| 212 |
// FibHeap |
|
| 213 |
{
|
|
| 214 |
typedef FibHeap<Prio, ItemIntMap> IntHeap; |
|
| 215 |
checkConcept<Heap<Prio, ItemIntMap>, IntHeap>(); |
|
| 216 |
heapSortTest<IntHeap>(); |
|
| 217 |
heapIncreaseTest<IntHeap>(); |
|
| 218 |
|
|
| 219 |
typedef FibHeap<Prio, IntNodeMap > NodeHeap; |
|
| 220 |
checkConcept<Heap<Prio, IntNodeMap >, NodeHeap>(); |
|
| 221 |
dijkstraHeapTest<NodeHeap>(digraph, length, source); |
|
| 222 |
} |
|
| 223 |
|
|
| 224 |
// PairingHeap |
|
| 225 |
{
|
|
| 226 |
typedef PairingHeap<Prio, ItemIntMap> IntHeap; |
|
| 227 |
checkConcept<Heap<Prio, ItemIntMap>, IntHeap>(); |
|
| 228 |
heapSortTest<IntHeap>(); |
|
| 229 |
heapIncreaseTest<IntHeap>(); |
|
| 230 |
|
|
| 231 |
typedef PairingHeap<Prio, IntNodeMap > NodeHeap; |
|
| 232 |
checkConcept<Heap<Prio, IntNodeMap >, NodeHeap>(); |
|
| 233 |
dijkstraHeapTest<NodeHeap>(digraph, length, source); |
|
| 234 |
} |
|
| 235 |
|
|
| 236 |
// RadixHeap |
|
| 237 |
{
|
|
| 238 |
typedef RadixHeap<ItemIntMap> IntHeap; |
|
| 239 |
checkConcept<Heap<Prio, ItemIntMap>, IntHeap>(); |
|
| 240 |
heapSortTest<IntHeap>(); |
|
| 241 |
heapIncreaseTest<IntHeap>(); |
|
| 242 |
|
|
| 243 |
typedef RadixHeap<IntNodeMap > NodeHeap; |
|
| 244 |
checkConcept<Heap<Prio, IntNodeMap >, NodeHeap>(); |
|
| 245 |
dijkstraHeapTest<NodeHeap>(digraph, length, source); |
|
| 246 |
} |
|
| 247 |
|
|
| 248 |
// BinomHeap |
|
| 249 |
{
|
|
| 250 |
typedef BinomHeap<Prio, ItemIntMap> IntHeap; |
|
| 251 |
checkConcept<Heap<Prio, ItemIntMap>, IntHeap>(); |
|
| 252 |
heapSortTest<IntHeap>(); |
|
| 253 |
heapIncreaseTest<IntHeap>(); |
|
| 254 |
|
|
| 255 |
typedef BinomHeap<Prio, IntNodeMap > NodeHeap; |
|
| 256 |
checkConcept<Heap<Prio, IntNodeMap >, NodeHeap>(); |
|
| 257 |
dijkstraHeapTest<NodeHeap>(digraph, length, source); |
|
| 258 |
} |
|
| 259 |
|
|
| 260 |
// BucketHeap, SimpleBucketHeap |
|
| 261 |
{
|
|
| 262 |
typedef BucketHeap<ItemIntMap> IntHeap; |
|
| 263 |
checkConcept<Heap<Prio, ItemIntMap>, IntHeap>(); |
|
| 264 |
heapSortTest<IntHeap>(); |
|
| 265 |
heapIncreaseTest<IntHeap>(); |
|
| 266 |
|
|
| 267 |
typedef BucketHeap<IntNodeMap > NodeHeap; |
|
| 268 |
checkConcept<Heap<Prio, IntNodeMap >, NodeHeap>(); |
|
| 269 |
dijkstraHeapTest<NodeHeap>(digraph, length, source); |
|
| 270 |
|
|
| 271 |
typedef SimpleBucketHeap<ItemIntMap> SimpleIntHeap; |
|
| 272 |
heapSortTest<SimpleIntHeap>(); |
|
| 273 |
} |
|
| 274 |
|
|
| 186 | 275 |
return 0; |
| 187 | 276 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <iostream> |
| 20 | 20 |
#include <vector> |
| 21 | 21 |
|
| 22 | 22 |
#include "test_tools.h" |
| 23 | 23 |
#include <lemon/maps.h> |
| 24 | 24 |
#include <lemon/kruskal.h> |
| 25 | 25 |
#include <lemon/list_graph.h> |
| 26 | 26 |
|
| 27 | 27 |
#include <lemon/concepts/maps.h> |
| 28 | 28 |
#include <lemon/concepts/digraph.h> |
| 29 | 29 |
#include <lemon/concepts/graph.h> |
| 30 | 30 |
|
| 31 | 31 |
using namespace std; |
| 32 | 32 |
using namespace lemon; |
| 33 | 33 |
|
| 34 | 34 |
void checkCompileKruskal() |
| 35 | 35 |
{
|
| 36 | 36 |
concepts::WriteMap<concepts::Digraph::Arc,bool> w; |
| 37 | 37 |
concepts::WriteMap<concepts::Graph::Edge,bool> uw; |
| 38 | 38 |
|
| 39 | 39 |
concepts::ReadMap<concepts::Digraph::Arc,int> r; |
| 40 | 40 |
concepts::ReadMap<concepts::Graph::Edge,int> ur; |
| 41 | 41 |
|
| 42 | 42 |
concepts::Digraph g; |
| 43 | 43 |
concepts::Graph ug; |
| 44 | 44 |
|
| 45 | 45 |
kruskal(g, r, w); |
| 46 | 46 |
kruskal(ug, ur, uw); |
| 47 | 47 |
|
| 48 | 48 |
std::vector<std::pair<concepts::Digraph::Arc, int> > rs; |
| 49 | 49 |
std::vector<std::pair<concepts::Graph::Edge, int> > urs; |
| 50 | 50 |
|
| 51 | 51 |
kruskal(g, rs, w); |
| 52 | 52 |
kruskal(ug, urs, uw); |
| 53 | 53 |
|
| 54 | 54 |
std::vector<concepts::Digraph::Arc> ws; |
| 55 | 55 |
std::vector<concepts::Graph::Edge> uws; |
| 56 | 56 |
|
| 57 | 57 |
kruskal(g, r, ws.begin()); |
| 58 | 58 |
kruskal(ug, ur, uws.begin()); |
| 59 | 59 |
} |
| 60 | 60 |
|
| 61 | 61 |
int main() {
|
| 62 | 62 |
|
| 63 | 63 |
typedef ListGraph::Node Node; |
| 64 | 64 |
typedef ListGraph::Edge Edge; |
| 65 | 65 |
typedef ListGraph::NodeIt NodeIt; |
| 66 | 66 |
typedef ListGraph::ArcIt ArcIt; |
| 67 | 67 |
|
| 68 | 68 |
ListGraph G; |
| 69 | 69 |
|
| 70 | 70 |
Node s=G.addNode(); |
| 71 | 71 |
Node v1=G.addNode(); |
| 72 | 72 |
Node v2=G.addNode(); |
| 73 | 73 |
Node v3=G.addNode(); |
| 74 | 74 |
Node v4=G.addNode(); |
| 75 | 75 |
Node t=G.addNode(); |
| 76 | 76 |
|
| 77 | 77 |
Edge e1 = G.addEdge(s, v1); |
| 78 | 78 |
Edge e2 = G.addEdge(s, v2); |
| 79 | 79 |
Edge e3 = G.addEdge(v1, v2); |
| 80 | 80 |
Edge e4 = G.addEdge(v2, v1); |
| 81 | 81 |
Edge e5 = G.addEdge(v1, v3); |
| 82 | 82 |
Edge e6 = G.addEdge(v3, v2); |
| 83 | 83 |
Edge e7 = G.addEdge(v2, v4); |
| 84 | 84 |
Edge e8 = G.addEdge(v4, v3); |
| 85 | 85 |
Edge e9 = G.addEdge(v3, t); |
| 86 | 86 |
Edge e10 = G.addEdge(v4, t); |
| 87 | 87 |
|
| 88 | 88 |
typedef ListGraph::EdgeMap<int> ECostMap; |
| 89 | 89 |
typedef ListGraph::EdgeMap<bool> EBoolMap; |
| 90 | 90 |
|
| 91 | 91 |
ECostMap edge_cost_map(G, 2); |
| 92 | 92 |
EBoolMap tree_map(G); |
| 93 | 93 |
|
| 94 | 94 |
|
| 95 | 95 |
//Test with const map. |
| 96 | 96 |
check(kruskal(G, ConstMap<ListGraph::Edge,int>(2), tree_map)==10, |
| 97 | 97 |
"Total cost should be 10"); |
| 98 | 98 |
//Test with an edge map (filled with uniform costs). |
| 99 | 99 |
check(kruskal(G, edge_cost_map, tree_map)==10, |
| 100 | 100 |
"Total cost should be 10"); |
| 101 | 101 |
|
| 102 |
edge_cost_map.set(e1, -10); |
|
| 103 |
edge_cost_map.set(e2, -9); |
|
| 104 |
edge_cost_map.set(e3, -8); |
|
| 105 |
edge_cost_map.set(e4, -7); |
|
| 106 |
edge_cost_map.set(e5, -6); |
|
| 107 |
edge_cost_map.set(e6, -5); |
|
| 108 |
edge_cost_map.set(e7, -4); |
|
| 109 |
edge_cost_map.set(e8, -3); |
|
| 110 |
edge_cost_map.set(e9, -2); |
|
| 111 |
edge_cost_map.set(e10, -1); |
|
| 102 |
edge_cost_map[e1] = -10; |
|
| 103 |
edge_cost_map[e2] = -9; |
|
| 104 |
edge_cost_map[e3] = -8; |
|
| 105 |
edge_cost_map[e4] = -7; |
|
| 106 |
edge_cost_map[e5] = -6; |
|
| 107 |
edge_cost_map[e6] = -5; |
|
| 108 |
edge_cost_map[e7] = -4; |
|
| 109 |
edge_cost_map[e8] = -3; |
|
| 110 |
edge_cost_map[e9] = -2; |
|
| 111 |
edge_cost_map[e10] = -1; |
|
| 112 | 112 |
|
| 113 | 113 |
vector<Edge> tree_edge_vec(5); |
| 114 | 114 |
|
| 115 | 115 |
//Test with a edge map and inserter. |
| 116 | 116 |
check(kruskal(G, edge_cost_map, |
| 117 | 117 |
tree_edge_vec.begin()) |
| 118 | 118 |
==-31, |
| 119 | 119 |
"Total cost should be -31."); |
| 120 | 120 |
|
| 121 | 121 |
tree_edge_vec.clear(); |
| 122 | 122 |
|
| 123 | 123 |
check(kruskal(G, edge_cost_map, |
| 124 | 124 |
back_inserter(tree_edge_vec)) |
| 125 | 125 |
==-31, |
| 126 | 126 |
"Total cost should be -31."); |
| 127 | 127 |
|
| 128 | 128 |
// tree_edge_vec.clear(); |
| 129 | 129 |
|
| 130 | 130 |
// //The above test could also be coded like this: |
| 131 | 131 |
// check(kruskal(G, |
| 132 | 132 |
// makeKruskalMapInput(G, edge_cost_map), |
| 133 | 133 |
// makeKruskalSequenceOutput(back_inserter(tree_edge_vec))) |
| 134 | 134 |
// ==-31, |
| 135 | 135 |
// "Total cost should be -31."); |
| 136 | 136 |
|
| 137 | 137 |
check(tree_edge_vec.size()==5,"The tree should have 5 edges."); |
| 138 | 138 |
|
| 139 | 139 |
check(tree_edge_vec[0]==e1 && |
| 140 | 140 |
tree_edge_vec[1]==e2 && |
| 141 | 141 |
tree_edge_vec[2]==e5 && |
| 142 | 142 |
tree_edge_vec[3]==e7 && |
| 143 | 143 |
tree_edge_vec[4]==e9, |
| 144 | 144 |
"Wrong tree."); |
| 145 | 145 |
|
| 146 | 146 |
return 0; |
| 147 | 147 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 |
* Copyright (C) 2003- |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <sstream> |
| 20 | 20 |
#include <lemon/lp_skeleton.h> |
| 21 | 21 |
#include "test_tools.h" |
| 22 | 22 |
#include <lemon/tolerance.h> |
| 23 | 23 |
|
| 24 |
#ifdef HAVE_CONFIG_H |
|
| 25 | 24 |
#include <lemon/config.h> |
| 26 |
#endif |
|
| 27 | 25 |
|
| 28 |
#ifdef |
|
| 26 |
#ifdef LEMON_HAVE_GLPK |
|
| 29 | 27 |
#include <lemon/glpk.h> |
| 30 | 28 |
#endif |
| 31 | 29 |
|
| 32 |
#ifdef |
|
| 30 |
#ifdef LEMON_HAVE_CPLEX |
|
| 33 | 31 |
#include <lemon/cplex.h> |
| 34 | 32 |
#endif |
| 35 | 33 |
|
| 36 |
#ifdef |
|
| 34 |
#ifdef LEMON_HAVE_SOPLEX |
|
| 37 | 35 |
#include <lemon/soplex.h> |
| 38 | 36 |
#endif |
| 39 | 37 |
|
| 40 |
#ifdef |
|
| 38 |
#ifdef LEMON_HAVE_CLP |
|
| 41 | 39 |
#include <lemon/clp.h> |
| 42 | 40 |
#endif |
| 43 | 41 |
|
| 44 | 42 |
using namespace lemon; |
| 45 | 43 |
|
| 46 | 44 |
void lpTest(LpSolver& lp) |
| 47 | 45 |
{
|
| 48 | 46 |
|
| 49 | 47 |
typedef LpSolver LP; |
| 50 | 48 |
|
| 51 | 49 |
std::vector<LP::Col> x(10); |
| 52 | 50 |
// for(int i=0;i<10;i++) x.push_back(lp.addCol()); |
| 53 | 51 |
lp.addColSet(x); |
| 54 | 52 |
lp.colLowerBound(x,1); |
| 55 | 53 |
lp.colUpperBound(x,1); |
| 56 | 54 |
lp.colBounds(x,1,2); |
| 57 | 55 |
|
| 58 | 56 |
std::vector<LP::Col> y(10); |
| 59 | 57 |
lp.addColSet(y); |
| 60 | 58 |
|
| 61 | 59 |
lp.colLowerBound(y,1); |
| 62 | 60 |
lp.colUpperBound(y,1); |
| 63 | 61 |
lp.colBounds(y,1,2); |
| 64 | 62 |
|
| 65 | 63 |
std::map<int,LP::Col> z; |
| 66 | 64 |
|
| 67 | 65 |
z.insert(std::make_pair(12,INVALID)); |
| 68 | 66 |
z.insert(std::make_pair(2,INVALID)); |
| 69 | 67 |
z.insert(std::make_pair(7,INVALID)); |
| 70 | 68 |
z.insert(std::make_pair(5,INVALID)); |
| 71 | 69 |
|
| 72 | 70 |
lp.addColSet(z); |
| 73 | 71 |
|
| 74 | 72 |
lp.colLowerBound(z,1); |
| 75 | 73 |
lp.colUpperBound(z,1); |
| 76 | 74 |
lp.colBounds(z,1,2); |
| 77 | 75 |
|
| 78 | 76 |
{
|
| 79 | 77 |
LP::Expr e,f,g; |
| 80 | 78 |
LP::Col p1,p2,p3,p4,p5; |
| 81 | 79 |
LP::Constr c; |
| 82 | 80 |
|
| 83 | 81 |
p1=lp.addCol(); |
| 84 | 82 |
p2=lp.addCol(); |
| 85 | 83 |
p3=lp.addCol(); |
| 86 | 84 |
p4=lp.addCol(); |
| 87 | 85 |
p5=lp.addCol(); |
| 88 | 86 |
|
| 89 | 87 |
e[p1]=2; |
| 90 | 88 |
*e=12; |
| 91 | 89 |
e[p1]+=2; |
| 92 | 90 |
*e+=12; |
| 93 | 91 |
e[p1]-=2; |
| 94 | 92 |
*e-=12; |
| 95 | 93 |
|
| 96 | 94 |
e=2; |
| 97 | 95 |
e=2.2; |
| 98 | 96 |
e=p1; |
| 99 | 97 |
e=f; |
| 100 | 98 |
|
| 101 | 99 |
e+=2; |
| 102 | 100 |
e+=2.2; |
| 103 | 101 |
e+=p1; |
| 104 | 102 |
e+=f; |
| 105 | 103 |
|
| 106 | 104 |
e-=2; |
| 107 | 105 |
e-=2.2; |
| 108 | 106 |
e-=p1; |
| 109 | 107 |
e-=f; |
| 110 | 108 |
|
| 111 | 109 |
e*=2; |
| 112 | 110 |
e*=2.2; |
| 113 | 111 |
e/=2; |
| 114 | 112 |
e/=2.2; |
| 115 | 113 |
|
| 116 | 114 |
e=((p1+p2)+(p1-p2)+(p1+12)+(12+p1)+(p1-12)+(12-p1)+ |
| 117 | 115 |
(f+12)+(12+f)+(p1+f)+(f+p1)+(f+g)+ |
| 118 | 116 |
(f-12)+(12-f)+(p1-f)+(f-p1)+(f-g)+ |
| 119 | 117 |
2.2*f+f*2.2+f/2.2+ |
| 120 | 118 |
2*f+f*2+f/2+ |
| 121 | 119 |
2.2*p1+p1*2.2+p1/2.2+ |
| 122 | 120 |
2*p1+p1*2+p1/2 |
| 123 | 121 |
); |
| 124 | 122 |
|
| 125 | 123 |
|
| 126 | 124 |
c = (e <= f ); |
| 127 | 125 |
c = (e <= 2.2); |
| 128 | 126 |
c = (e <= 2 ); |
| 129 | 127 |
c = (e <= p1 ); |
| 130 | 128 |
c = (2.2<= f ); |
| 131 | 129 |
c = (2 <= f ); |
| 132 | 130 |
c = (p1 <= f ); |
| 133 | 131 |
c = (p1 <= p2 ); |
| 134 | 132 |
c = (p1 <= 2.2); |
| 135 | 133 |
c = (p1 <= 2 ); |
| 136 | 134 |
c = (2.2<= p2 ); |
| 137 | 135 |
c = (2 <= p2 ); |
| 138 | 136 |
|
| 139 | 137 |
c = (e >= f ); |
| 140 | 138 |
c = (e >= 2.2); |
| 141 | 139 |
c = (e >= 2 ); |
| 142 | 140 |
c = (e >= p1 ); |
| 143 | 141 |
c = (2.2>= f ); |
| 144 | 142 |
c = (2 >= f ); |
| 145 | 143 |
c = (p1 >= f ); |
| 146 | 144 |
c = (p1 >= p2 ); |
| 147 | 145 |
c = (p1 >= 2.2); |
| 148 | 146 |
c = (p1 >= 2 ); |
| 149 | 147 |
c = (2.2>= p2 ); |
| 150 | 148 |
c = (2 >= p2 ); |
| 151 | 149 |
|
| 152 | 150 |
c = (e == f ); |
| 153 | 151 |
c = (e == 2.2); |
| 154 | 152 |
c = (e == 2 ); |
| 155 | 153 |
c = (e == p1 ); |
| 156 | 154 |
c = (2.2== f ); |
| 157 | 155 |
c = (2 == f ); |
| 158 | 156 |
c = (p1 == f ); |
| 159 | 157 |
//c = (p1 == p2 ); |
| 160 | 158 |
c = (p1 == 2.2); |
| 161 | 159 |
c = (p1 == 2 ); |
| 162 | 160 |
c = (2.2== p2 ); |
| 163 | 161 |
c = (2 == p2 ); |
| 164 | 162 |
|
| 165 | 163 |
c = ((2 <= e) <= 3); |
| 166 | 164 |
c = ((2 <= p1) <= 3); |
| 167 | 165 |
|
| 168 | 166 |
c = ((2 >= e) >= 3); |
| 169 | 167 |
c = ((2 >= p1) >= 3); |
| 170 | 168 |
|
| 171 | 169 |
e[x[3]]=2; |
| 172 | 170 |
e[x[3]]=4; |
| 173 | 171 |
e[x[3]]=1; |
| 174 | 172 |
*e=12; |
| 175 | 173 |
|
| 176 | 174 |
lp.addRow(-LP::INF,e,23); |
| 177 | 175 |
lp.addRow(-LP::INF,3.0*(x[1]+x[2]/2)-x[3],23); |
| 178 | 176 |
lp.addRow(-LP::INF,3.0*(x[1]+x[2]*2-5*x[3]+12-x[4]/3)+2*x[4]-4,23); |
| 179 | 177 |
|
| 180 | 178 |
lp.addRow(x[1]+x[3]<=x[5]-3); |
| 181 | 179 |
lp.addRow((-7<=x[1]+x[3]-12)<=3); |
| 182 | 180 |
lp.addRow(x[1]<=x[5]); |
| 183 | 181 |
|
| 184 | 182 |
std::ostringstream buf; |
| 185 | 183 |
|
| 186 | 184 |
|
| 187 | 185 |
e=((p1+p2)+(p1-0.99*p2)); |
| 188 | 186 |
//e.prettyPrint(std::cout); |
| 189 | 187 |
//(e<=2).prettyPrint(std::cout); |
| 190 | 188 |
double tolerance=0.001; |
| 191 | 189 |
e.simplify(tolerance); |
| 192 | 190 |
buf << "Coeff. of p2 should be 0.01"; |
| 193 | 191 |
check(e[p2]>0, buf.str()); |
| 194 | 192 |
|
| 195 | 193 |
tolerance=0.02; |
| 196 | 194 |
e.simplify(tolerance); |
| 197 | 195 |
buf << "Coeff. of p2 should be 0"; |
| 198 | 196 |
check(const_cast<const LpSolver::Expr&>(e)[p2]==0, buf.str()); |
| 199 | 197 |
|
| 198 |
//Test for clone/new |
|
| 199 |
LP* lpnew = lp.newSolver(); |
|
| 200 |
LP* lpclone = lp.cloneSolver(); |
|
| 201 |
delete lpnew; |
|
| 202 |
delete lpclone; |
|
| 200 | 203 |
|
| 201 | 204 |
} |
| 202 | 205 |
|
| 203 | 206 |
{
|
| 204 | 207 |
LP::DualExpr e,f,g; |
| 205 | 208 |
LP::Row p1 = INVALID, p2 = INVALID, p3 = INVALID, |
| 206 | 209 |
p4 = INVALID, p5 = INVALID; |
| 207 | 210 |
|
| 208 | 211 |
e[p1]=2; |
| 209 | 212 |
e[p1]+=2; |
| 210 | 213 |
e[p1]-=2; |
| 211 | 214 |
|
| 212 | 215 |
e=p1; |
| 213 | 216 |
e=f; |
| 214 | 217 |
|
| 215 | 218 |
e+=p1; |
| 216 | 219 |
e+=f; |
| 217 | 220 |
|
| 218 | 221 |
e-=p1; |
| 219 | 222 |
e-=f; |
| 220 | 223 |
|
| 221 | 224 |
e*=2; |
| 222 | 225 |
e*=2.2; |
| 223 | 226 |
e/=2; |
| 224 | 227 |
e/=2.2; |
| 225 | 228 |
|
| 226 | 229 |
e=((p1+p2)+(p1-p2)+ |
| 227 | 230 |
(p1+f)+(f+p1)+(f+g)+ |
| 228 | 231 |
(p1-f)+(f-p1)+(f-g)+ |
| 229 | 232 |
2.2*f+f*2.2+f/2.2+ |
| 230 | 233 |
2*f+f*2+f/2+ |
| 231 | 234 |
2.2*p1+p1*2.2+p1/2.2+ |
| 232 | 235 |
2*p1+p1*2+p1/2 |
| 233 | 236 |
); |
| 234 | 237 |
} |
| 235 | 238 |
|
| 236 | 239 |
} |
| 237 | 240 |
|
| 238 | 241 |
void solveAndCheck(LpSolver& lp, LpSolver::ProblemType stat, |
| 239 | 242 |
double exp_opt) {
|
| 240 | 243 |
using std::string; |
| 241 | 244 |
lp.solve(); |
| 242 | 245 |
|
| 243 | 246 |
std::ostringstream buf; |
| 244 | 247 |
buf << "PrimalType should be: " << int(stat) << int(lp.primalType()); |
| 245 | 248 |
|
| 246 | 249 |
check(lp.primalType()==stat, buf.str()); |
| 247 | 250 |
|
| 248 | 251 |
if (stat == LpSolver::OPTIMAL) {
|
| 249 | 252 |
std::ostringstream sbuf; |
| 250 |
sbuf << "Wrong optimal value |
|
| 253 |
sbuf << "Wrong optimal value (" << lp.primal() <<") with "
|
|
| 254 |
<< lp.solverName() <<"\n the right optimum is " << exp_opt; |
|
| 251 | 255 |
check(std::abs(lp.primal()-exp_opt) < 1e-3, sbuf.str()); |
| 252 | 256 |
} |
| 253 | 257 |
} |
| 254 | 258 |
|
| 255 | 259 |
void aTest(LpSolver & lp) |
| 256 | 260 |
{
|
| 257 | 261 |
typedef LpSolver LP; |
| 258 | 262 |
|
| 259 | 263 |
//The following example is very simple |
| 260 | 264 |
|
| 261 | 265 |
typedef LpSolver::Row Row; |
| 262 | 266 |
typedef LpSolver::Col Col; |
| 263 | 267 |
|
| 264 | 268 |
|
| 265 | 269 |
Col x1 = lp.addCol(); |
| 266 | 270 |
Col x2 = lp.addCol(); |
| 267 | 271 |
|
| 268 | 272 |
|
| 269 | 273 |
//Constraints |
| 270 | 274 |
Row upright=lp.addRow(x1+2*x2 <=1); |
| 271 | 275 |
lp.addRow(x1+x2 >=-1); |
| 272 | 276 |
lp.addRow(x1-x2 <=1); |
| 273 | 277 |
lp.addRow(x1-x2 >=-1); |
| 274 | 278 |
//Nonnegativity of the variables |
| 275 | 279 |
lp.colLowerBound(x1, 0); |
| 276 | 280 |
lp.colLowerBound(x2, 0); |
| 277 | 281 |
//Objective function |
| 278 | 282 |
lp.obj(x1+x2); |
| 279 | 283 |
|
| 280 | 284 |
lp.sense(lp.MAX); |
| 281 | 285 |
|
| 282 | 286 |
//Testing the problem retrieving routines |
| 283 | 287 |
check(lp.objCoeff(x1)==1,"First term should be 1 in the obj function!"); |
| 284 | 288 |
check(lp.sense() == lp.MAX,"This is a maximization!"); |
| 285 | 289 |
check(lp.coeff(upright,x1)==1,"The coefficient in question is 1!"); |
| 286 | 290 |
check(lp.colLowerBound(x1)==0, |
| 287 | 291 |
"The lower bound for variable x1 should be 0."); |
| 288 | 292 |
check(lp.colUpperBound(x1)==LpSolver::INF, |
| 289 | 293 |
"The upper bound for variable x1 should be infty."); |
| 290 | 294 |
check(lp.rowLowerBound(upright) == -LpSolver::INF, |
| 291 | 295 |
"The lower bound for the first row should be -infty."); |
| 292 | 296 |
check(lp.rowUpperBound(upright)==1, |
| 293 | 297 |
"The upper bound for the first row should be 1."); |
| 294 | 298 |
LpSolver::Expr e = lp.row(upright); |
| 295 | 299 |
check(e[x1] == 1, "The first coefficient should 1."); |
| 296 | 300 |
check(e[x2] == 2, "The second coefficient should 1."); |
| 297 | 301 |
|
| 298 | 302 |
lp.row(upright, x1+x2 <=1); |
| 299 | 303 |
e = lp.row(upright); |
| 300 | 304 |
check(e[x1] == 1, "The first coefficient should 1."); |
| 301 | 305 |
check(e[x2] == 1, "The second coefficient should 1."); |
| 302 | 306 |
|
| 303 | 307 |
LpSolver::DualExpr de = lp.col(x1); |
| 304 | 308 |
check( de[upright] == 1, "The first coefficient should 1."); |
| 305 | 309 |
|
| 306 | 310 |
LpSolver* clp = lp.cloneSolver(); |
| 307 | 311 |
|
| 308 | 312 |
//Testing the problem retrieving routines |
| 309 | 313 |
check(clp->objCoeff(x1)==1,"First term should be 1 in the obj function!"); |
| 310 | 314 |
check(clp->sense() == clp->MAX,"This is a maximization!"); |
| 311 | 315 |
check(clp->coeff(upright,x1)==1,"The coefficient in question is 1!"); |
| 312 | 316 |
// std::cout<<lp.colLowerBound(x1)<<std::endl; |
| 313 | 317 |
check(clp->colLowerBound(x1)==0, |
| 314 | 318 |
"The lower bound for variable x1 should be 0."); |
| 315 | 319 |
check(clp->colUpperBound(x1)==LpSolver::INF, |
| 316 | 320 |
"The upper bound for variable x1 should be infty."); |
| 317 | 321 |
|
| 318 | 322 |
check(lp.rowLowerBound(upright)==-LpSolver::INF, |
| 319 | 323 |
"The lower bound for the first row should be -infty."); |
| 320 | 324 |
check(lp.rowUpperBound(upright)==1, |
| 321 | 325 |
"The upper bound for the first row should be 1."); |
| 322 | 326 |
e = clp->row(upright); |
| 323 | 327 |
check(e[x1] == 1, "The first coefficient should 1."); |
| 324 | 328 |
check(e[x2] == 1, "The second coefficient should 1."); |
| 325 | 329 |
|
| 326 | 330 |
de = clp->col(x1); |
| 327 | 331 |
check(de[upright] == 1, "The first coefficient should 1."); |
| 328 | 332 |
|
| 329 | 333 |
delete clp; |
| 330 | 334 |
|
| 331 | 335 |
//Maximization of x1+x2 |
| 332 | 336 |
//over the triangle with vertices (0,0) (0,1) (1,0) |
| 333 | 337 |
double expected_opt=1; |
| 334 | 338 |
solveAndCheck(lp, LpSolver::OPTIMAL, expected_opt); |
| 335 | 339 |
|
| 336 | 340 |
//Minimization |
| 337 | 341 |
lp.sense(lp.MIN); |
| 338 | 342 |
expected_opt=0; |
| 339 | 343 |
solveAndCheck(lp, LpSolver::OPTIMAL, expected_opt); |
| 340 | 344 |
|
| 341 | 345 |
//Vertex (-1,0) instead of (0,0) |
| 342 | 346 |
lp.colLowerBound(x1, -LpSolver::INF); |
| 343 | 347 |
expected_opt=-1; |
| 344 | 348 |
solveAndCheck(lp, LpSolver::OPTIMAL, expected_opt); |
| 345 | 349 |
|
| 346 | 350 |
//Erase one constraint and return to maximization |
| 347 | 351 |
lp.erase(upright); |
| 348 | 352 |
lp.sense(lp.MAX); |
| 349 | 353 |
expected_opt=LpSolver::INF; |
| 350 | 354 |
solveAndCheck(lp, LpSolver::UNBOUNDED, expected_opt); |
| 351 | 355 |
|
| 352 | 356 |
//Infeasibilty |
| 353 | 357 |
lp.addRow(x1+x2 <=-2); |
| 354 | 358 |
solveAndCheck(lp, LpSolver::INFEASIBLE, expected_opt); |
| 355 | 359 |
|
| 356 | 360 |
} |
| 357 | 361 |
|
| 362 |
template<class LP> |
|
| 363 |
void cloneTest() |
|
| 364 |
{
|
|
| 365 |
//Test for clone/new |
|
| 366 |
|
|
| 367 |
LP* lp = new LP(); |
|
| 368 |
LP* lpnew = lp->newSolver(); |
|
| 369 |
LP* lpclone = lp->cloneSolver(); |
|
| 370 |
delete lp; |
|
| 371 |
delete lpnew; |
|
| 372 |
delete lpclone; |
|
| 373 |
} |
|
| 374 |
|
|
| 358 | 375 |
int main() |
| 359 | 376 |
{
|
| 360 | 377 |
LpSkeleton lp_skel; |
| 361 | 378 |
lpTest(lp_skel); |
| 362 | 379 |
|
| 363 |
#ifdef |
|
| 380 |
#ifdef LEMON_HAVE_GLPK |
|
| 364 | 381 |
{
|
| 365 | 382 |
GlpkLp lp_glpk1,lp_glpk2; |
| 366 | 383 |
lpTest(lp_glpk1); |
| 367 | 384 |
aTest(lp_glpk2); |
| 385 |
cloneTest<GlpkLp>(); |
|
| 368 | 386 |
} |
| 369 | 387 |
#endif |
| 370 | 388 |
|
| 371 |
#ifdef |
|
| 389 |
#ifdef LEMON_HAVE_CPLEX |
|
| 372 | 390 |
try {
|
| 373 | 391 |
CplexLp lp_cplex1,lp_cplex2; |
| 374 | 392 |
lpTest(lp_cplex1); |
| 375 | 393 |
aTest(lp_cplex2); |
| 394 |
cloneTest<CplexLp>(); |
|
| 376 | 395 |
} catch (CplexEnv::LicenseError& error) {
|
| 377 |
#ifdef LEMON_FORCE_CPLEX_CHECK |
|
| 378 | 396 |
check(false, error.what()); |
| 379 |
#else |
|
| 380 |
std::cerr << error.what() << std::endl; |
|
| 381 |
std::cerr << "Cplex license check failed, lp check skipped" << std::endl; |
|
| 382 |
#endif |
|
| 383 | 397 |
} |
| 384 | 398 |
#endif |
| 385 | 399 |
|
| 386 |
#ifdef |
|
| 400 |
#ifdef LEMON_HAVE_SOPLEX |
|
| 387 | 401 |
{
|
| 388 | 402 |
SoplexLp lp_soplex1,lp_soplex2; |
| 389 | 403 |
lpTest(lp_soplex1); |
| 390 | 404 |
aTest(lp_soplex2); |
| 405 |
cloneTest<SoplexLp>(); |
|
| 391 | 406 |
} |
| 392 | 407 |
#endif |
| 393 | 408 |
|
| 394 |
#ifdef |
|
| 409 |
#ifdef LEMON_HAVE_CLP |
|
| 395 | 410 |
{
|
| 396 | 411 |
ClpLp lp_clp1,lp_clp2; |
| 397 | 412 |
lpTest(lp_clp1); |
| 398 | 413 |
aTest(lp_clp2); |
| 414 |
cloneTest<ClpLp>(); |
|
| 399 | 415 |
} |
| 400 | 416 |
#endif |
| 401 | 417 |
|
| 402 | 418 |
return 0; |
| 403 | 419 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <deque> |
| 20 | 20 |
#include <set> |
| 21 | 21 |
|
| 22 | 22 |
#include <lemon/concept_check.h> |
| 23 | 23 |
#include <lemon/concepts/maps.h> |
| 24 | 24 |
#include <lemon/maps.h> |
| 25 |
#include <lemon/list_graph.h> |
|
| 26 |
#include <lemon/smart_graph.h> |
|
| 27 |
#include <lemon/adaptors.h> |
|
| 28 |
#include <lemon/dfs.h> |
|
| 25 | 29 |
|
| 26 | 30 |
#include "test_tools.h" |
| 27 | 31 |
|
| 28 | 32 |
using namespace lemon; |
| 29 | 33 |
using namespace lemon::concepts; |
| 30 | 34 |
|
| 31 | 35 |
struct A {};
|
| 32 | 36 |
inline bool operator<(A, A) { return true; }
|
| 33 | 37 |
struct B {};
|
| 34 | 38 |
|
| 35 | 39 |
class C {
|
| 36 | 40 |
int x; |
| 37 | 41 |
public: |
| 38 | 42 |
C(int _x) : x(_x) {}
|
| 39 | 43 |
}; |
| 40 | 44 |
|
| 41 | 45 |
class F {
|
| 42 | 46 |
public: |
| 43 | 47 |
typedef A argument_type; |
| 44 | 48 |
typedef B result_type; |
| 45 | 49 |
|
| 46 | 50 |
B operator()(const A&) const { return B(); }
|
| 47 | 51 |
private: |
| 48 | 52 |
F& operator=(const F&); |
| 49 | 53 |
}; |
| 50 | 54 |
|
| 51 | 55 |
int func(A) { return 3; }
|
| 52 | 56 |
|
| 53 | 57 |
int binc(int a, B) { return a+1; }
|
| 54 | 58 |
|
| 55 | 59 |
typedef ReadMap<A, double> DoubleMap; |
| 56 | 60 |
typedef ReadWriteMap<A, double> DoubleWriteMap; |
| 57 | 61 |
typedef ReferenceMap<A, double, double&, const double&> DoubleRefMap; |
| 58 | 62 |
|
| 59 | 63 |
typedef ReadMap<A, bool> BoolMap; |
| 60 | 64 |
typedef ReadWriteMap<A, bool> BoolWriteMap; |
| 61 | 65 |
typedef ReferenceMap<A, bool, bool&, const bool&> BoolRefMap; |
| 62 | 66 |
|
| 67 |
template<typename Map1, typename Map2, typename ItemIt> |
|
| 68 |
void compareMap(const Map1& map1, const Map2& map2, ItemIt it) {
|
|
| 69 |
for (; it != INVALID; ++it) |
|
| 70 |
check(map1[it] == map2[it], "The maps are not equal"); |
|
| 71 |
} |
|
| 72 |
|
|
| 63 | 73 |
int main() |
| 64 | 74 |
{
|
| 65 | 75 |
// Map concepts |
| 66 | 76 |
checkConcept<ReadMap<A,B>, ReadMap<A,B> >(); |
| 67 | 77 |
checkConcept<ReadMap<A,C>, ReadMap<A,C> >(); |
| 68 | 78 |
checkConcept<WriteMap<A,B>, WriteMap<A,B> >(); |
| 69 | 79 |
checkConcept<WriteMap<A,C>, WriteMap<A,C> >(); |
| 70 | 80 |
checkConcept<ReadWriteMap<A,B>, ReadWriteMap<A,B> >(); |
| 71 | 81 |
checkConcept<ReadWriteMap<A,C>, ReadWriteMap<A,C> >(); |
| 72 | 82 |
checkConcept<ReferenceMap<A,B,B&,const B&>, ReferenceMap<A,B,B&,const B&> >(); |
| 73 | 83 |
checkConcept<ReferenceMap<A,C,C&,const C&>, ReferenceMap<A,C,C&,const C&> >(); |
| 74 | 84 |
|
| 75 | 85 |
// NullMap |
| 76 | 86 |
{
|
| 77 | 87 |
checkConcept<ReadWriteMap<A,B>, NullMap<A,B> >(); |
| 78 | 88 |
NullMap<A,B> map1; |
| 79 | 89 |
NullMap<A,B> map2 = map1; |
| 80 | 90 |
map1 = nullMap<A,B>(); |
| 81 | 91 |
} |
| 82 | 92 |
|
| 83 | 93 |
// ConstMap |
| 84 | 94 |
{
|
| 85 | 95 |
checkConcept<ReadWriteMap<A,B>, ConstMap<A,B> >(); |
| 86 | 96 |
checkConcept<ReadWriteMap<A,C>, ConstMap<A,C> >(); |
| 87 | 97 |
ConstMap<A,B> map1; |
| 88 | 98 |
ConstMap<A,B> map2 = B(); |
| 89 | 99 |
ConstMap<A,B> map3 = map1; |
| 90 | 100 |
map1 = constMap<A>(B()); |
| 91 | 101 |
map1 = constMap<A,B>(); |
| 92 | 102 |
map1.setAll(B()); |
| 93 | 103 |
ConstMap<A,C> map4(C(1)); |
| 94 | 104 |
ConstMap<A,C> map5 = map4; |
| 95 | 105 |
map4 = constMap<A>(C(2)); |
| 96 | 106 |
map4.setAll(C(3)); |
| 97 | 107 |
|
| 98 | 108 |
checkConcept<ReadWriteMap<A,int>, ConstMap<A,int> >(); |
| 99 | 109 |
check(constMap<A>(10)[A()] == 10, "Something is wrong with ConstMap"); |
| 100 | 110 |
|
| 101 | 111 |
checkConcept<ReadWriteMap<A,int>, ConstMap<A,Const<int,10> > >(); |
| 102 | 112 |
ConstMap<A,Const<int,10> > map6; |
| 103 | 113 |
ConstMap<A,Const<int,10> > map7 = map6; |
| 104 | 114 |
map6 = constMap<A,int,10>(); |
| 105 | 115 |
map7 = constMap<A,Const<int,10> >(); |
| 106 | 116 |
check(map6[A()] == 10 && map7[A()] == 10, |
| 107 | 117 |
"Something is wrong with ConstMap"); |
| 108 | 118 |
} |
| 109 | 119 |
|
| 110 | 120 |
// IdentityMap |
| 111 | 121 |
{
|
| 112 | 122 |
checkConcept<ReadMap<A,A>, IdentityMap<A> >(); |
| 113 | 123 |
IdentityMap<A> map1; |
| 114 | 124 |
IdentityMap<A> map2 = map1; |
| 115 | 125 |
map1 = identityMap<A>(); |
| 116 | 126 |
|
| 117 | 127 |
checkConcept<ReadMap<double,double>, IdentityMap<double> >(); |
| 118 | 128 |
check(identityMap<double>()[1.0] == 1.0 && |
| 119 | 129 |
identityMap<double>()[3.14] == 3.14, |
| 120 | 130 |
"Something is wrong with IdentityMap"); |
| 121 | 131 |
} |
| 122 | 132 |
|
| 123 | 133 |
// RangeMap |
| 124 | 134 |
{
|
| 125 | 135 |
checkConcept<ReferenceMap<int,B,B&,const B&>, RangeMap<B> >(); |
| 126 | 136 |
RangeMap<B> map1; |
| 127 | 137 |
RangeMap<B> map2(10); |
| 128 | 138 |
RangeMap<B> map3(10,B()); |
| 129 | 139 |
RangeMap<B> map4 = map1; |
| 130 | 140 |
RangeMap<B> map5 = rangeMap<B>(); |
| 131 | 141 |
RangeMap<B> map6 = rangeMap<B>(10); |
| 132 | 142 |
RangeMap<B> map7 = rangeMap(10,B()); |
| 133 | 143 |
|
| 134 | 144 |
checkConcept< ReferenceMap<int, double, double&, const double&>, |
| 135 | 145 |
RangeMap<double> >(); |
| 136 | 146 |
std::vector<double> v(10, 0); |
| 137 | 147 |
v[5] = 100; |
| 138 | 148 |
RangeMap<double> map8(v); |
| 139 | 149 |
RangeMap<double> map9 = rangeMap(v); |
| 140 | 150 |
check(map9.size() == 10 && map9[2] == 0 && map9[5] == 100, |
| 141 | 151 |
"Something is wrong with RangeMap"); |
| 142 | 152 |
} |
| 143 | 153 |
|
| 144 | 154 |
// SparseMap |
| 145 | 155 |
{
|
| 146 | 156 |
checkConcept<ReferenceMap<A,B,B&,const B&>, SparseMap<A,B> >(); |
| 147 | 157 |
SparseMap<A,B> map1; |
| 148 | 158 |
SparseMap<A,B> map2 = B(); |
| 149 | 159 |
SparseMap<A,B> map3 = sparseMap<A,B>(); |
| 150 | 160 |
SparseMap<A,B> map4 = sparseMap<A>(B()); |
| 151 | 161 |
|
| 152 | 162 |
checkConcept< ReferenceMap<double, int, int&, const int&>, |
| 153 | 163 |
SparseMap<double, int> >(); |
| 154 | 164 |
std::map<double, int> m; |
| 155 | 165 |
SparseMap<double, int> map5(m); |
| 156 | 166 |
SparseMap<double, int> map6(m,10); |
| 157 | 167 |
SparseMap<double, int> map7 = sparseMap(m); |
| 158 | 168 |
SparseMap<double, int> map8 = sparseMap(m,10); |
| 159 | 169 |
|
| 160 | 170 |
check(map5[1.0] == 0 && map5[3.14] == 0 && |
| 161 | 171 |
map6[1.0] == 10 && map6[3.14] == 10, |
| 162 | 172 |
"Something is wrong with SparseMap"); |
| 163 | 173 |
map5[1.0] = map6[3.14] = 100; |
| 164 | 174 |
check(map5[1.0] == 100 && map5[3.14] == 0 && |
| 165 | 175 |
map6[1.0] == 10 && map6[3.14] == 100, |
| 166 | 176 |
"Something is wrong with SparseMap"); |
| 167 | 177 |
} |
| 168 | 178 |
|
| 169 | 179 |
// ComposeMap |
| 170 | 180 |
{
|
| 171 | 181 |
typedef ComposeMap<DoubleMap, ReadMap<B,A> > CompMap; |
| 172 | 182 |
checkConcept<ReadMap<B,double>, CompMap>(); |
| 173 |
CompMap map1(DoubleMap(),ReadMap<B,A>()); |
|
| 183 |
CompMap map1 = CompMap(DoubleMap(),ReadMap<B,A>()); |
|
| 174 | 184 |
CompMap map2 = composeMap(DoubleMap(), ReadMap<B,A>()); |
| 175 | 185 |
|
| 176 | 186 |
SparseMap<double, bool> m1(false); m1[3.14] = true; |
| 177 | 187 |
RangeMap<double> m2(2); m2[0] = 3.0; m2[1] = 3.14; |
| 178 | 188 |
check(!composeMap(m1,m2)[0] && composeMap(m1,m2)[1], |
| 179 | 189 |
"Something is wrong with ComposeMap") |
| 180 | 190 |
} |
| 181 | 191 |
|
| 182 | 192 |
// CombineMap |
| 183 | 193 |
{
|
| 184 | 194 |
typedef CombineMap<DoubleMap, DoubleMap, std::plus<double> > CombMap; |
| 185 | 195 |
checkConcept<ReadMap<A,double>, CombMap>(); |
| 186 |
CombMap map1(DoubleMap(), DoubleMap()); |
|
| 196 |
CombMap map1 = CombMap(DoubleMap(), DoubleMap()); |
|
| 187 | 197 |
CombMap map2 = combineMap(DoubleMap(), DoubleMap(), std::plus<double>()); |
| 188 | 198 |
|
| 189 | 199 |
check(combineMap(constMap<B,int,2>(), identityMap<B>(), &binc)[B()] == 3, |
| 190 | 200 |
"Something is wrong with CombineMap"); |
| 191 | 201 |
} |
| 192 | 202 |
|
| 193 | 203 |
// FunctorToMap, MapToFunctor |
| 194 | 204 |
{
|
| 195 | 205 |
checkConcept<ReadMap<A,B>, FunctorToMap<F,A,B> >(); |
| 196 | 206 |
checkConcept<ReadMap<A,B>, FunctorToMap<F> >(); |
| 197 | 207 |
FunctorToMap<F> map1; |
| 198 |
FunctorToMap<F> map2(F()); |
|
| 208 |
FunctorToMap<F> map2 = FunctorToMap<F>(F()); |
|
| 199 | 209 |
B b = functorToMap(F())[A()]; |
| 200 | 210 |
|
| 201 | 211 |
checkConcept<ReadMap<A,B>, MapToFunctor<ReadMap<A,B> > >(); |
| 202 |
MapToFunctor<ReadMap<A,B> > map(ReadMap<A,B>()); |
|
| 212 |
MapToFunctor<ReadMap<A,B> > map = MapToFunctor<ReadMap<A,B> >(ReadMap<A,B>()); |
|
| 203 | 213 |
|
| 204 | 214 |
check(functorToMap(&func)[A()] == 3, |
| 205 | 215 |
"Something is wrong with FunctorToMap"); |
| 206 | 216 |
check(mapToFunctor(constMap<A,int>(2))(A()) == 2, |
| 207 | 217 |
"Something is wrong with MapToFunctor"); |
| 208 | 218 |
check(mapToFunctor(functorToMap(&func))(A()) == 3 && |
| 209 | 219 |
mapToFunctor(functorToMap(&func))[A()] == 3, |
| 210 | 220 |
"Something is wrong with FunctorToMap or MapToFunctor"); |
| 211 | 221 |
check(functorToMap(mapToFunctor(constMap<A,int>(2)))[A()] == 2, |
| 212 | 222 |
"Something is wrong with FunctorToMap or MapToFunctor"); |
| 213 | 223 |
} |
| 214 | 224 |
|
| 215 | 225 |
// ConvertMap |
| 216 | 226 |
{
|
| 217 | 227 |
checkConcept<ReadMap<double,double>, |
| 218 | 228 |
ConvertMap<ReadMap<double, int>, double> >(); |
| 219 | 229 |
ConvertMap<RangeMap<bool>, int> map1(rangeMap(1, true)); |
| 220 | 230 |
ConvertMap<RangeMap<bool>, int> map2 = convertMap<int>(rangeMap(2, false)); |
| 221 | 231 |
} |
| 222 | 232 |
|
| 223 | 233 |
// ForkMap |
| 224 | 234 |
{
|
| 225 | 235 |
checkConcept<DoubleWriteMap, ForkMap<DoubleWriteMap, DoubleWriteMap> >(); |
| 226 | 236 |
|
| 227 | 237 |
typedef RangeMap<double> RM; |
| 228 | 238 |
typedef SparseMap<int, double> SM; |
| 229 | 239 |
RM m1(10, -1); |
| 230 | 240 |
SM m2(-1); |
| 231 | 241 |
checkConcept<ReadWriteMap<int, double>, ForkMap<RM, SM> >(); |
| 232 | 242 |
checkConcept<ReadWriteMap<int, double>, ForkMap<SM, RM> >(); |
| 233 | 243 |
ForkMap<RM, SM> map1(m1,m2); |
| 234 | 244 |
ForkMap<SM, RM> map2 = forkMap(m2,m1); |
| 235 | 245 |
map2.set(5, 10); |
| 236 | 246 |
check(m1[1] == -1 && m1[5] == 10 && m2[1] == -1 && |
| 237 | 247 |
m2[5] == 10 && map2[1] == -1 && map2[5] == 10, |
| 238 | 248 |
"Something is wrong with ForkMap"); |
| 239 | 249 |
} |
| 240 | 250 |
|
| 241 | 251 |
// Arithmetic maps: |
| 242 | 252 |
// - AddMap, SubMap, MulMap, DivMap |
| 243 | 253 |
// - ShiftMap, ShiftWriteMap, ScaleMap, ScaleWriteMap |
| 244 | 254 |
// - NegMap, NegWriteMap, AbsMap |
| 245 | 255 |
{
|
| 246 | 256 |
checkConcept<DoubleMap, AddMap<DoubleMap,DoubleMap> >(); |
| 247 | 257 |
checkConcept<DoubleMap, SubMap<DoubleMap,DoubleMap> >(); |
| 248 | 258 |
checkConcept<DoubleMap, MulMap<DoubleMap,DoubleMap> >(); |
| 249 | 259 |
checkConcept<DoubleMap, DivMap<DoubleMap,DoubleMap> >(); |
| 250 | 260 |
|
| 251 | 261 |
ConstMap<int, double> c1(1.0), c2(3.14); |
| 252 | 262 |
IdentityMap<int> im; |
| 253 | 263 |
ConvertMap<IdentityMap<int>, double> id(im); |
| 254 | 264 |
check(addMap(c1,id)[0] == 1.0 && addMap(c1,id)[10] == 11.0, |
| 255 | 265 |
"Something is wrong with AddMap"); |
| 256 | 266 |
check(subMap(id,c1)[0] == -1.0 && subMap(id,c1)[10] == 9.0, |
| 257 | 267 |
"Something is wrong with SubMap"); |
| 258 | 268 |
check(mulMap(id,c2)[0] == 0 && mulMap(id,c2)[2] == 6.28, |
| 259 | 269 |
"Something is wrong with MulMap"); |
| 260 | 270 |
check(divMap(c2,id)[1] == 3.14 && divMap(c2,id)[2] == 1.57, |
| 261 | 271 |
"Something is wrong with DivMap"); |
| 262 | 272 |
|
| 263 | 273 |
checkConcept<DoubleMap, ShiftMap<DoubleMap> >(); |
| 264 | 274 |
checkConcept<DoubleWriteMap, ShiftWriteMap<DoubleWriteMap> >(); |
| 265 | 275 |
checkConcept<DoubleMap, ScaleMap<DoubleMap> >(); |
| 266 | 276 |
checkConcept<DoubleWriteMap, ScaleWriteMap<DoubleWriteMap> >(); |
| 267 | 277 |
checkConcept<DoubleMap, NegMap<DoubleMap> >(); |
| 268 | 278 |
checkConcept<DoubleWriteMap, NegWriteMap<DoubleWriteMap> >(); |
| 269 | 279 |
checkConcept<DoubleMap, AbsMap<DoubleMap> >(); |
| 270 | 280 |
|
| 271 | 281 |
check(shiftMap(id, 2.0)[1] == 3.0 && shiftMap(id, 2.0)[10] == 12.0, |
| 272 | 282 |
"Something is wrong with ShiftMap"); |
| 273 | 283 |
check(shiftWriteMap(id, 2.0)[1] == 3.0 && |
| 274 | 284 |
shiftWriteMap(id, 2.0)[10] == 12.0, |
| 275 | 285 |
"Something is wrong with ShiftWriteMap"); |
| 276 | 286 |
check(scaleMap(id, 2.0)[1] == 2.0 && scaleMap(id, 2.0)[10] == 20.0, |
| 277 | 287 |
"Something is wrong with ScaleMap"); |
| 278 | 288 |
check(scaleWriteMap(id, 2.0)[1] == 2.0 && |
| 279 | 289 |
scaleWriteMap(id, 2.0)[10] == 20.0, |
| 280 | 290 |
"Something is wrong with ScaleWriteMap"); |
| 281 | 291 |
check(negMap(id)[1] == -1.0 && negMap(id)[-10] == 10.0, |
| 282 | 292 |
"Something is wrong with NegMap"); |
| 283 | 293 |
check(negWriteMap(id)[1] == -1.0 && negWriteMap(id)[-10] == 10.0, |
| 284 | 294 |
"Something is wrong with NegWriteMap"); |
| 285 | 295 |
check(absMap(id)[1] == 1.0 && absMap(id)[-10] == 10.0, |
| 286 | 296 |
"Something is wrong with AbsMap"); |
| 287 | 297 |
} |
| 288 | 298 |
|
| 289 | 299 |
// Logical maps: |
| 290 | 300 |
// - TrueMap, FalseMap |
| 291 | 301 |
// - AndMap, OrMap |
| 292 | 302 |
// - NotMap, NotWriteMap |
| 293 | 303 |
// - EqualMap, LessMap |
| 294 | 304 |
{
|
| 295 | 305 |
checkConcept<BoolMap, TrueMap<A> >(); |
| 296 | 306 |
checkConcept<BoolMap, FalseMap<A> >(); |
| 297 | 307 |
checkConcept<BoolMap, AndMap<BoolMap,BoolMap> >(); |
| 298 | 308 |
checkConcept<BoolMap, OrMap<BoolMap,BoolMap> >(); |
| 299 | 309 |
checkConcept<BoolMap, NotMap<BoolMap> >(); |
| 300 | 310 |
checkConcept<BoolWriteMap, NotWriteMap<BoolWriteMap> >(); |
| 301 | 311 |
checkConcept<BoolMap, EqualMap<DoubleMap,DoubleMap> >(); |
| 302 | 312 |
checkConcept<BoolMap, LessMap<DoubleMap,DoubleMap> >(); |
| 303 | 313 |
|
| 304 | 314 |
TrueMap<int> tm; |
| 305 | 315 |
FalseMap<int> fm; |
| 306 | 316 |
RangeMap<bool> rm(2); |
| 307 | 317 |
rm[0] = true; rm[1] = false; |
| 308 | 318 |
check(andMap(tm,rm)[0] && !andMap(tm,rm)[1] && |
| 309 | 319 |
!andMap(fm,rm)[0] && !andMap(fm,rm)[1], |
| 310 | 320 |
"Something is wrong with AndMap"); |
| 311 | 321 |
check(orMap(tm,rm)[0] && orMap(tm,rm)[1] && |
| 312 | 322 |
orMap(fm,rm)[0] && !orMap(fm,rm)[1], |
| 313 | 323 |
"Something is wrong with OrMap"); |
| 314 | 324 |
check(!notMap(rm)[0] && notMap(rm)[1], |
| 315 | 325 |
"Something is wrong with NotMap"); |
| 316 | 326 |
check(!notWriteMap(rm)[0] && notWriteMap(rm)[1], |
| 317 | 327 |
"Something is wrong with NotWriteMap"); |
| 318 | 328 |
|
| 319 | 329 |
ConstMap<int, double> cm(2.0); |
| 320 | 330 |
IdentityMap<int> im; |
| 321 | 331 |
ConvertMap<IdentityMap<int>, double> id(im); |
| 322 | 332 |
check(lessMap(id,cm)[1] && !lessMap(id,cm)[2] && !lessMap(id,cm)[3], |
| 323 | 333 |
"Something is wrong with LessMap"); |
| 324 | 334 |
check(!equalMap(id,cm)[1] && equalMap(id,cm)[2] && !equalMap(id,cm)[3], |
| 325 | 335 |
"Something is wrong with EqualMap"); |
| 326 | 336 |
} |
| 327 | 337 |
|
| 328 | 338 |
// LoggerBoolMap |
| 329 | 339 |
{
|
| 330 | 340 |
typedef std::vector<int> vec; |
| 341 |
checkConcept<WriteMap<int, bool>, LoggerBoolMap<vec::iterator> >(); |
|
| 342 |
checkConcept<WriteMap<int, bool>, |
|
| 343 |
LoggerBoolMap<std::back_insert_iterator<vec> > >(); |
|
| 344 |
|
|
| 331 | 345 |
vec v1; |
| 332 | 346 |
vec v2(10); |
| 333 | 347 |
LoggerBoolMap<std::back_insert_iterator<vec> > |
| 334 | 348 |
map1(std::back_inserter(v1)); |
| 335 | 349 |
LoggerBoolMap<vec::iterator> map2(v2.begin()); |
| 336 | 350 |
map1.set(10, false); |
| 337 | 351 |
map1.set(20, true); map2.set(20, true); |
| 338 | 352 |
map1.set(30, false); map2.set(40, false); |
| 339 | 353 |
map1.set(50, true); map2.set(50, true); |
| 340 | 354 |
map1.set(60, true); map2.set(60, true); |
| 341 | 355 |
check(v1.size() == 3 && v2.size() == 10 && |
| 342 | 356 |
v1[0]==20 && v1[1]==50 && v1[2]==60 && |
| 343 | 357 |
v2[0]==20 && v2[1]==50 && v2[2]==60, |
| 344 | 358 |
"Something is wrong with LoggerBoolMap"); |
| 345 | 359 |
|
| 346 | 360 |
int i = 0; |
| 347 | 361 |
for ( LoggerBoolMap<vec::iterator>::Iterator it = map2.begin(); |
| 348 | 362 |
it != map2.end(); ++it ) |
| 349 | 363 |
check(v1[i++] == *it, "Something is wrong with LoggerBoolMap"); |
| 364 |
|
|
| 365 |
typedef ListDigraph Graph; |
|
| 366 |
DIGRAPH_TYPEDEFS(Graph); |
|
| 367 |
Graph gr; |
|
| 368 |
|
|
| 369 |
Node n0 = gr.addNode(); |
|
| 370 |
Node n1 = gr.addNode(); |
|
| 371 |
Node n2 = gr.addNode(); |
|
| 372 |
Node n3 = gr.addNode(); |
|
| 373 |
|
|
| 374 |
gr.addArc(n3, n0); |
|
| 375 |
gr.addArc(n3, n2); |
|
| 376 |
gr.addArc(n0, n2); |
|
| 377 |
gr.addArc(n2, n1); |
|
| 378 |
gr.addArc(n0, n1); |
|
| 379 |
|
|
| 380 |
{
|
|
| 381 |
std::vector<Node> v; |
|
| 382 |
dfs(gr).processedMap(loggerBoolMap(std::back_inserter(v))).run(); |
|
| 383 |
|
|
| 384 |
check(v.size()==4 && v[0]==n1 && v[1]==n2 && v[2]==n0 && v[3]==n3, |
|
| 385 |
"Something is wrong with LoggerBoolMap"); |
|
| 386 |
} |
|
| 387 |
{
|
|
| 388 |
std::vector<Node> v(countNodes(gr)); |
|
| 389 |
dfs(gr).processedMap(loggerBoolMap(v.begin())).run(); |
|
| 390 |
|
|
| 391 |
check(v.size()==4 && v[0]==n1 && v[1]==n2 && v[2]==n0 && v[3]==n3, |
|
| 392 |
"Something is wrong with LoggerBoolMap"); |
|
| 393 |
} |
|
| 394 |
} |
|
| 395 |
|
|
| 396 |
// IdMap, RangeIdMap |
|
| 397 |
{
|
|
| 398 |
typedef ListDigraph Graph; |
|
| 399 |
DIGRAPH_TYPEDEFS(Graph); |
|
| 400 |
|
|
| 401 |
checkConcept<ReadMap<Node, int>, IdMap<Graph, Node> >(); |
|
| 402 |
checkConcept<ReadMap<Arc, int>, IdMap<Graph, Arc> >(); |
|
| 403 |
checkConcept<ReadMap<Node, int>, RangeIdMap<Graph, Node> >(); |
|
| 404 |
checkConcept<ReadMap<Arc, int>, RangeIdMap<Graph, Arc> >(); |
|
| 405 |
|
|
| 406 |
Graph gr; |
|
| 407 |
IdMap<Graph, Node> nmap(gr); |
|
| 408 |
IdMap<Graph, Arc> amap(gr); |
|
| 409 |
RangeIdMap<Graph, Node> nrmap(gr); |
|
| 410 |
RangeIdMap<Graph, Arc> armap(gr); |
|
| 411 |
|
|
| 412 |
Node n0 = gr.addNode(); |
|
| 413 |
Node n1 = gr.addNode(); |
|
| 414 |
Node n2 = gr.addNode(); |
|
| 415 |
|
|
| 416 |
Arc a0 = gr.addArc(n0, n1); |
|
| 417 |
Arc a1 = gr.addArc(n0, n2); |
|
| 418 |
Arc a2 = gr.addArc(n2, n1); |
|
| 419 |
Arc a3 = gr.addArc(n2, n0); |
|
| 420 |
|
|
| 421 |
check(nmap[n0] == gr.id(n0) && nmap(gr.id(n0)) == n0, "Wrong IdMap"); |
|
| 422 |
check(nmap[n1] == gr.id(n1) && nmap(gr.id(n1)) == n1, "Wrong IdMap"); |
|
| 423 |
check(nmap[n2] == gr.id(n2) && nmap(gr.id(n2)) == n2, "Wrong IdMap"); |
|
| 424 |
|
|
| 425 |
check(amap[a0] == gr.id(a0) && amap(gr.id(a0)) == a0, "Wrong IdMap"); |
|
| 426 |
check(amap[a1] == gr.id(a1) && amap(gr.id(a1)) == a1, "Wrong IdMap"); |
|
| 427 |
check(amap[a2] == gr.id(a2) && amap(gr.id(a2)) == a2, "Wrong IdMap"); |
|
| 428 |
check(amap[a3] == gr.id(a3) && amap(gr.id(a3)) == a3, "Wrong IdMap"); |
|
| 429 |
|
|
| 430 |
check(nmap.inverse()[gr.id(n0)] == n0, "Wrong IdMap::InverseMap"); |
|
| 431 |
check(amap.inverse()[gr.id(a0)] == a0, "Wrong IdMap::InverseMap"); |
|
| 432 |
|
|
| 433 |
check(nrmap.size() == 3 && armap.size() == 4, |
|
| 434 |
"Wrong RangeIdMap::size()"); |
|
| 435 |
|
|
| 436 |
check(nrmap[n0] == 0 && nrmap(0) == n0, "Wrong RangeIdMap"); |
|
| 437 |
check(nrmap[n1] == 1 && nrmap(1) == n1, "Wrong RangeIdMap"); |
|
| 438 |
check(nrmap[n2] == 2 && nrmap(2) == n2, "Wrong RangeIdMap"); |
|
| 439 |
|
|
| 440 |
check(armap[a0] == 0 && armap(0) == a0, "Wrong RangeIdMap"); |
|
| 441 |
check(armap[a1] == 1 && armap(1) == a1, "Wrong RangeIdMap"); |
|
| 442 |
check(armap[a2] == 2 && armap(2) == a2, "Wrong RangeIdMap"); |
|
| 443 |
check(armap[a3] == 3 && armap(3) == a3, "Wrong RangeIdMap"); |
|
| 444 |
|
|
| 445 |
check(nrmap.inverse()[0] == n0, "Wrong RangeIdMap::InverseMap"); |
|
| 446 |
check(armap.inverse()[0] == a0, "Wrong RangeIdMap::InverseMap"); |
|
| 447 |
|
|
| 448 |
gr.erase(n1); |
|
| 449 |
|
|
| 450 |
if (nrmap[n0] == 1) nrmap.swap(n0, n2); |
|
| 451 |
nrmap.swap(n2, n0); |
|
| 452 |
if (armap[a1] == 1) armap.swap(a1, a3); |
|
| 453 |
armap.swap(a3, a1); |
|
| 454 |
|
|
| 455 |
check(nrmap.size() == 2 && armap.size() == 2, |
|
| 456 |
"Wrong RangeIdMap::size()"); |
|
| 457 |
|
|
| 458 |
check(nrmap[n0] == 1 && nrmap(1) == n0, "Wrong RangeIdMap"); |
|
| 459 |
check(nrmap[n2] == 0 && nrmap(0) == n2, "Wrong RangeIdMap"); |
|
| 460 |
|
|
| 461 |
check(armap[a1] == 1 && armap(1) == a1, "Wrong RangeIdMap"); |
|
| 462 |
check(armap[a3] == 0 && armap(0) == a3, "Wrong RangeIdMap"); |
|
| 463 |
|
|
| 464 |
check(nrmap.inverse()[0] == n2, "Wrong RangeIdMap::InverseMap"); |
|
| 465 |
check(armap.inverse()[0] == a3, "Wrong RangeIdMap::InverseMap"); |
|
| 466 |
} |
|
| 467 |
|
|
| 468 |
// SourceMap, TargetMap, ForwardMap, BackwardMap, InDegMap, OutDegMap |
|
| 469 |
{
|
|
| 470 |
typedef ListGraph Graph; |
|
| 471 |
GRAPH_TYPEDEFS(Graph); |
|
| 472 |
|
|
| 473 |
checkConcept<ReadMap<Arc, Node>, SourceMap<Graph> >(); |
|
| 474 |
checkConcept<ReadMap<Arc, Node>, TargetMap<Graph> >(); |
|
| 475 |
checkConcept<ReadMap<Edge, Arc>, ForwardMap<Graph> >(); |
|
| 476 |
checkConcept<ReadMap<Edge, Arc>, BackwardMap<Graph> >(); |
|
| 477 |
checkConcept<ReadMap<Node, int>, InDegMap<Graph> >(); |
|
| 478 |
checkConcept<ReadMap<Node, int>, OutDegMap<Graph> >(); |
|
| 479 |
|
|
| 480 |
Graph gr; |
|
| 481 |
Node n0 = gr.addNode(); |
|
| 482 |
Node n1 = gr.addNode(); |
|
| 483 |
Node n2 = gr.addNode(); |
|
| 484 |
|
|
| 485 |
gr.addEdge(n0,n1); |
|
| 486 |
gr.addEdge(n1,n2); |
|
| 487 |
gr.addEdge(n0,n2); |
|
| 488 |
gr.addEdge(n2,n1); |
|
| 489 |
gr.addEdge(n1,n2); |
|
| 490 |
gr.addEdge(n0,n1); |
|
| 491 |
|
|
| 492 |
for (EdgeIt e(gr); e != INVALID; ++e) {
|
|
| 493 |
check(forwardMap(gr)[e] == gr.direct(e, true), "Wrong ForwardMap"); |
|
| 494 |
check(backwardMap(gr)[e] == gr.direct(e, false), "Wrong BackwardMap"); |
|
| 495 |
} |
|
| 496 |
|
|
| 497 |
compareMap(sourceMap(orienter(gr, constMap<Edge, bool>(true))), |
|
| 498 |
targetMap(orienter(gr, constMap<Edge, bool>(false))), |
|
| 499 |
EdgeIt(gr)); |
|
| 500 |
|
|
| 501 |
typedef Orienter<Graph, const ConstMap<Edge, bool> > Digraph; |
|
| 502 |
Digraph dgr(gr, constMap<Edge, bool>(true)); |
|
| 503 |
OutDegMap<Digraph> odm(dgr); |
|
| 504 |
InDegMap<Digraph> idm(dgr); |
|
| 505 |
|
|
| 506 |
check(odm[n0] == 3 && odm[n1] == 2 && odm[n2] == 1, "Wrong OutDegMap"); |
|
| 507 |
check(idm[n0] == 0 && idm[n1] == 3 && idm[n2] == 3, "Wrong InDegMap"); |
|
| 508 |
|
|
| 509 |
gr.addEdge(n2, n0); |
|
| 510 |
|
|
| 511 |
check(odm[n0] == 3 && odm[n1] == 2 && odm[n2] == 2, "Wrong OutDegMap"); |
|
| 512 |
check(idm[n0] == 1 && idm[n1] == 3 && idm[n2] == 3, "Wrong InDegMap"); |
|
| 513 |
} |
|
| 514 |
|
|
| 515 |
// CrossRefMap |
|
| 516 |
{
|
|
| 517 |
typedef ListDigraph Graph; |
|
| 518 |
DIGRAPH_TYPEDEFS(Graph); |
|
| 519 |
|
|
| 520 |
checkConcept<ReadWriteMap<Node, int>, |
|
| 521 |
CrossRefMap<Graph, Node, int> >(); |
|
| 522 |
checkConcept<ReadWriteMap<Node, bool>, |
|
| 523 |
CrossRefMap<Graph, Node, bool> >(); |
|
| 524 |
checkConcept<ReadWriteMap<Node, double>, |
|
| 525 |
CrossRefMap<Graph, Node, double> >(); |
|
| 526 |
|
|
| 527 |
Graph gr; |
|
| 528 |
typedef CrossRefMap<Graph, Node, char> CRMap; |
|
| 529 |
CRMap map(gr); |
|
| 530 |
|
|
| 531 |
Node n0 = gr.addNode(); |
|
| 532 |
Node n1 = gr.addNode(); |
|
| 533 |
Node n2 = gr.addNode(); |
|
| 534 |
|
|
| 535 |
map.set(n0, 'A'); |
|
| 536 |
map.set(n1, 'B'); |
|
| 537 |
map.set(n2, 'C'); |
|
| 538 |
|
|
| 539 |
check(map[n0] == 'A' && map('A') == n0 && map.inverse()['A'] == n0,
|
|
| 540 |
"Wrong CrossRefMap"); |
|
| 541 |
check(map[n1] == 'B' && map('B') == n1 && map.inverse()['B'] == n1,
|
|
| 542 |
"Wrong CrossRefMap"); |
|
| 543 |
check(map[n2] == 'C' && map('C') == n2 && map.inverse()['C'] == n2,
|
|
| 544 |
"Wrong CrossRefMap"); |
|
| 545 |
check(map.count('A') == 1 && map.count('B') == 1 && map.count('C') == 1,
|
|
| 546 |
"Wrong CrossRefMap::count()"); |
|
| 547 |
|
|
| 548 |
CRMap::ValueIt it = map.beginValue(); |
|
| 549 |
check(*it++ == 'A' && *it++ == 'B' && *it++ == 'C' && |
|
| 550 |
it == map.endValue(), "Wrong value iterator"); |
|
| 551 |
|
|
| 552 |
map.set(n2, 'A'); |
|
| 553 |
|
|
| 554 |
check(map[n0] == 'A' && map[n1] == 'B' && map[n2] == 'A', |
|
| 555 |
"Wrong CrossRefMap"); |
|
| 556 |
check(map('A') == n0 && map.inverse()['A'] == n0, "Wrong CrossRefMap");
|
|
| 557 |
check(map('B') == n1 && map.inverse()['B'] == n1, "Wrong CrossRefMap");
|
|
| 558 |
check(map('C') == INVALID && map.inverse()['C'] == INVALID,
|
|
| 559 |
"Wrong CrossRefMap"); |
|
| 560 |
check(map.count('A') == 2 && map.count('B') == 1 && map.count('C') == 0,
|
|
| 561 |
"Wrong CrossRefMap::count()"); |
|
| 562 |
|
|
| 563 |
it = map.beginValue(); |
|
| 564 |
check(*it++ == 'A' && *it++ == 'A' && *it++ == 'B' && |
|
| 565 |
it == map.endValue(), "Wrong value iterator"); |
|
| 566 |
|
|
| 567 |
map.set(n0, 'C'); |
|
| 568 |
|
|
| 569 |
check(map[n0] == 'C' && map[n1] == 'B' && map[n2] == 'A', |
|
| 570 |
"Wrong CrossRefMap"); |
|
| 571 |
check(map('A') == n2 && map.inverse()['A'] == n2, "Wrong CrossRefMap");
|
|
| 572 |
check(map('B') == n1 && map.inverse()['B'] == n1, "Wrong CrossRefMap");
|
|
| 573 |
check(map('C') == n0 && map.inverse()['C'] == n0, "Wrong CrossRefMap");
|
|
| 574 |
check(map.count('A') == 1 && map.count('B') == 1 && map.count('C') == 1,
|
|
| 575 |
"Wrong CrossRefMap::count()"); |
|
| 576 |
|
|
| 577 |
it = map.beginValue(); |
|
| 578 |
check(*it++ == 'A' && *it++ == 'B' && *it++ == 'C' && |
|
| 579 |
it == map.endValue(), "Wrong value iterator"); |
|
| 350 | 580 |
} |
| 351 | 581 |
|
| 582 |
// CrossRefMap |
|
| 583 |
{
|
|
| 584 |
typedef SmartDigraph Graph; |
|
| 585 |
DIGRAPH_TYPEDEFS(Graph); |
|
| 586 |
|
|
| 587 |
checkConcept<ReadWriteMap<Node, int>, |
|
| 588 |
CrossRefMap<Graph, Node, int> >(); |
|
| 589 |
|
|
| 590 |
Graph gr; |
|
| 591 |
typedef CrossRefMap<Graph, Node, char> CRMap; |
|
| 592 |
typedef CRMap::ValueIterator ValueIt; |
|
| 593 |
CRMap map(gr); |
|
| 594 |
|
|
| 595 |
Node n0 = gr.addNode(); |
|
| 596 |
Node n1 = gr.addNode(); |
|
| 597 |
Node n2 = gr.addNode(); |
|
| 598 |
|
|
| 599 |
map.set(n0, 'A'); |
|
| 600 |
map.set(n1, 'B'); |
|
| 601 |
map.set(n2, 'C'); |
|
| 602 |
map.set(n2, 'A'); |
|
| 603 |
map.set(n0, 'C'); |
|
| 604 |
|
|
| 605 |
check(map[n0] == 'C' && map[n1] == 'B' && map[n2] == 'A', |
|
| 606 |
"Wrong CrossRefMap"); |
|
| 607 |
check(map('A') == n2 && map.inverse()['A'] == n2, "Wrong CrossRefMap");
|
|
| 608 |
check(map('B') == n1 && map.inverse()['B'] == n1, "Wrong CrossRefMap");
|
|
| 609 |
check(map('C') == n0 && map.inverse()['C'] == n0, "Wrong CrossRefMap");
|
|
| 610 |
|
|
| 611 |
ValueIt it = map.beginValue(); |
|
| 612 |
check(*it++ == 'A' && *it++ == 'B' && *it++ == 'C' && |
|
| 613 |
it == map.endValue(), "Wrong value iterator"); |
|
| 614 |
} |
|
| 615 |
|
|
| 616 |
// Iterable bool map |
|
| 617 |
{
|
|
| 618 |
typedef SmartGraph Graph; |
|
| 619 |
typedef SmartGraph::Node Item; |
|
| 620 |
|
|
| 621 |
typedef IterableBoolMap<SmartGraph, SmartGraph::Node> Ibm; |
|
| 622 |
checkConcept<ReferenceMap<Item, bool, bool&, const bool&>, Ibm>(); |
|
| 623 |
|
|
| 624 |
const int num = 10; |
|
| 625 |
Graph g; |
|
| 626 |
std::vector<Item> items; |
|
| 627 |
for (int i = 0; i < num; ++i) {
|
|
| 628 |
items.push_back(g.addNode()); |
|
| 629 |
} |
|
| 630 |
|
|
| 631 |
Ibm map1(g, true); |
|
| 632 |
int n = 0; |
|
| 633 |
for (Ibm::TrueIt it(map1); it != INVALID; ++it) {
|
|
| 634 |
check(map1[static_cast<Item>(it)], "Wrong TrueIt"); |
|
| 635 |
++n; |
|
| 636 |
} |
|
| 637 |
check(n == num, "Wrong number"); |
|
| 638 |
|
|
| 639 |
n = 0; |
|
| 640 |
for (Ibm::ItemIt it(map1, true); it != INVALID; ++it) {
|
|
| 641 |
check(map1[static_cast<Item>(it)], "Wrong ItemIt for true"); |
|
| 642 |
++n; |
|
| 643 |
} |
|
| 644 |
check(n == num, "Wrong number"); |
|
| 645 |
check(Ibm::FalseIt(map1) == INVALID, "Wrong FalseIt"); |
|
| 646 |
check(Ibm::ItemIt(map1, false) == INVALID, "Wrong ItemIt for false"); |
|
| 647 |
|
|
| 648 |
map1[items[5]] = true; |
|
| 649 |
|
|
| 650 |
n = 0; |
|
| 651 |
for (Ibm::ItemIt it(map1, true); it != INVALID; ++it) {
|
|
| 652 |
check(map1[static_cast<Item>(it)], "Wrong ItemIt for true"); |
|
| 653 |
++n; |
|
| 654 |
} |
|
| 655 |
check(n == num, "Wrong number"); |
|
| 656 |
|
|
| 657 |
map1[items[num / 2]] = false; |
|
| 658 |
check(map1[items[num / 2]] == false, "Wrong map value"); |
|
| 659 |
|
|
| 660 |
n = 0; |
|
| 661 |
for (Ibm::TrueIt it(map1); it != INVALID; ++it) {
|
|
| 662 |
check(map1[static_cast<Item>(it)], "Wrong TrueIt for true"); |
|
| 663 |
++n; |
|
| 664 |
} |
|
| 665 |
check(n == num - 1, "Wrong number"); |
|
| 666 |
|
|
| 667 |
n = 0; |
|
| 668 |
for (Ibm::FalseIt it(map1); it != INVALID; ++it) {
|
|
| 669 |
check(!map1[static_cast<Item>(it)], "Wrong FalseIt for true"); |
|
| 670 |
++n; |
|
| 671 |
} |
|
| 672 |
check(n == 1, "Wrong number"); |
|
| 673 |
|
|
| 674 |
map1[items[0]] = false; |
|
| 675 |
check(map1[items[0]] == false, "Wrong map value"); |
|
| 676 |
|
|
| 677 |
map1[items[num - 1]] = false; |
|
| 678 |
check(map1[items[num - 1]] == false, "Wrong map value"); |
|
| 679 |
|
|
| 680 |
n = 0; |
|
| 681 |
for (Ibm::TrueIt it(map1); it != INVALID; ++it) {
|
|
| 682 |
check(map1[static_cast<Item>(it)], "Wrong TrueIt for true"); |
|
| 683 |
++n; |
|
| 684 |
} |
|
| 685 |
check(n == num - 3, "Wrong number"); |
|
| 686 |
check(map1.trueNum() == num - 3, "Wrong number"); |
|
| 687 |
|
|
| 688 |
n = 0; |
|
| 689 |
for (Ibm::FalseIt it(map1); it != INVALID; ++it) {
|
|
| 690 |
check(!map1[static_cast<Item>(it)], "Wrong FalseIt for true"); |
|
| 691 |
++n; |
|
| 692 |
} |
|
| 693 |
check(n == 3, "Wrong number"); |
|
| 694 |
check(map1.falseNum() == 3, "Wrong number"); |
|
| 695 |
} |
|
| 696 |
|
|
| 697 |
// Iterable int map |
|
| 698 |
{
|
|
| 699 |
typedef SmartGraph Graph; |
|
| 700 |
typedef SmartGraph::Node Item; |
|
| 701 |
typedef IterableIntMap<SmartGraph, SmartGraph::Node> Iim; |
|
| 702 |
|
|
| 703 |
checkConcept<ReferenceMap<Item, int, int&, const int&>, Iim>(); |
|
| 704 |
|
|
| 705 |
const int num = 10; |
|
| 706 |
Graph g; |
|
| 707 |
std::vector<Item> items; |
|
| 708 |
for (int i = 0; i < num; ++i) {
|
|
| 709 |
items.push_back(g.addNode()); |
|
| 710 |
} |
|
| 711 |
|
|
| 712 |
Iim map1(g); |
|
| 713 |
check(map1.size() == 0, "Wrong size"); |
|
| 714 |
|
|
| 715 |
for (int i = 0; i < num; ++i) {
|
|
| 716 |
map1[items[i]] = i; |
|
| 717 |
} |
|
| 718 |
check(map1.size() == num, "Wrong size"); |
|
| 719 |
|
|
| 720 |
for (int i = 0; i < num; ++i) {
|
|
| 721 |
Iim::ItemIt it(map1, i); |
|
| 722 |
check(static_cast<Item>(it) == items[i], "Wrong value"); |
|
| 723 |
++it; |
|
| 724 |
check(static_cast<Item>(it) == INVALID, "Wrong value"); |
|
| 725 |
} |
|
| 726 |
|
|
| 727 |
for (int i = 0; i < num; ++i) {
|
|
| 728 |
map1[items[i]] = i % 2; |
|
| 729 |
} |
|
| 730 |
check(map1.size() == 2, "Wrong size"); |
|
| 731 |
|
|
| 732 |
int n = 0; |
|
| 733 |
for (Iim::ItemIt it(map1, 0); it != INVALID; ++it) {
|
|
| 734 |
check(map1[static_cast<Item>(it)] == 0, "Wrong value"); |
|
| 735 |
++n; |
|
| 736 |
} |
|
| 737 |
check(n == (num + 1) / 2, "Wrong number"); |
|
| 738 |
|
|
| 739 |
for (Iim::ItemIt it(map1, 1); it != INVALID; ++it) {
|
|
| 740 |
check(map1[static_cast<Item>(it)] == 1, "Wrong value"); |
|
| 741 |
++n; |
|
| 742 |
} |
|
| 743 |
check(n == num, "Wrong number"); |
|
| 744 |
|
|
| 745 |
} |
|
| 746 |
|
|
| 747 |
// Iterable value map |
|
| 748 |
{
|
|
| 749 |
typedef SmartGraph Graph; |
|
| 750 |
typedef SmartGraph::Node Item; |
|
| 751 |
typedef IterableValueMap<SmartGraph, SmartGraph::Node, double> Ivm; |
|
| 752 |
|
|
| 753 |
checkConcept<ReadWriteMap<Item, double>, Ivm>(); |
|
| 754 |
|
|
| 755 |
const int num = 10; |
|
| 756 |
Graph g; |
|
| 757 |
std::vector<Item> items; |
|
| 758 |
for (int i = 0; i < num; ++i) {
|
|
| 759 |
items.push_back(g.addNode()); |
|
| 760 |
} |
|
| 761 |
|
|
| 762 |
Ivm map1(g, 0.0); |
|
| 763 |
check(distance(map1.beginValue(), map1.endValue()) == 1, "Wrong size"); |
|
| 764 |
check(*map1.beginValue() == 0.0, "Wrong value"); |
|
| 765 |
|
|
| 766 |
for (int i = 0; i < num; ++i) {
|
|
| 767 |
map1.set(items[i], static_cast<double>(i)); |
|
| 768 |
} |
|
| 769 |
check(distance(map1.beginValue(), map1.endValue()) == num, "Wrong size"); |
|
| 770 |
|
|
| 771 |
for (int i = 0; i < num; ++i) {
|
|
| 772 |
Ivm::ItemIt it(map1, static_cast<double>(i)); |
|
| 773 |
check(static_cast<Item>(it) == items[i], "Wrong value"); |
|
| 774 |
++it; |
|
| 775 |
check(static_cast<Item>(it) == INVALID, "Wrong value"); |
|
| 776 |
} |
|
| 777 |
|
|
| 778 |
for (Ivm::ValueIt vit = map1.beginValue(); |
|
| 779 |
vit != map1.endValue(); ++vit) {
|
|
| 780 |
check(map1[static_cast<Item>(Ivm::ItemIt(map1, *vit))] == *vit, |
|
| 781 |
"Wrong ValueIt"); |
|
| 782 |
} |
|
| 783 |
|
|
| 784 |
for (int i = 0; i < num; ++i) {
|
|
| 785 |
map1.set(items[i], static_cast<double>(i % 2)); |
|
| 786 |
} |
|
| 787 |
check(distance(map1.beginValue(), map1.endValue()) == 2, "Wrong size"); |
|
| 788 |
|
|
| 789 |
int n = 0; |
|
| 790 |
for (Ivm::ItemIt it(map1, 0.0); it != INVALID; ++it) {
|
|
| 791 |
check(map1[static_cast<Item>(it)] == 0.0, "Wrong value"); |
|
| 792 |
++n; |
|
| 793 |
} |
|
| 794 |
check(n == (num + 1) / 2, "Wrong number"); |
|
| 795 |
|
|
| 796 |
for (Ivm::ItemIt it(map1, 1.0); it != INVALID; ++it) {
|
|
| 797 |
check(map1[static_cast<Item>(it)] == 1.0, "Wrong value"); |
|
| 798 |
++n; |
|
| 799 |
} |
|
| 800 |
check(n == num, "Wrong number"); |
|
| 801 |
|
|
| 802 |
} |
|
| 352 | 803 |
return 0; |
| 353 | 804 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <iostream> |
| 20 | 20 |
#include <sstream> |
| 21 | 21 |
#include <vector> |
| 22 | 22 |
#include <queue> |
| 23 |
#include <lemon/math.h> |
|
| 24 | 23 |
#include <cstdlib> |
| 25 | 24 |
|
| 26 |
#include <lemon/ |
|
| 25 |
#include <lemon/matching.h> |
|
| 27 | 26 |
#include <lemon/smart_graph.h> |
| 27 |
#include <lemon/concepts/graph.h> |
|
| 28 |
#include <lemon/concepts/maps.h> |
|
| 28 | 29 |
#include <lemon/lgf_reader.h> |
| 30 |
#include <lemon/math.h> |
|
| 29 | 31 |
|
| 30 | 32 |
#include "test_tools.h" |
| 31 | 33 |
|
| 32 | 34 |
using namespace std; |
| 33 | 35 |
using namespace lemon; |
| 34 | 36 |
|
| 35 | 37 |
GRAPH_TYPEDEFS(SmartGraph); |
| 36 | 38 |
|
| 37 | 39 |
|
| 38 | 40 |
const int lgfn = 3; |
| 39 | 41 |
const std::string lgf[lgfn] = {
|
| 40 | 42 |
"@nodes\n" |
| 41 | 43 |
"label\n" |
| 42 | 44 |
"0\n" |
| 43 | 45 |
"1\n" |
| 44 | 46 |
"2\n" |
| 45 | 47 |
"3\n" |
| 46 | 48 |
"4\n" |
| 47 | 49 |
"5\n" |
| 48 | 50 |
"6\n" |
| 49 | 51 |
"7\n" |
| 50 | 52 |
"@edges\n" |
| 51 | 53 |
" label weight\n" |
| 52 | 54 |
"7 4 0 984\n" |
| 53 | 55 |
"0 7 1 73\n" |
| 54 | 56 |
"7 1 2 204\n" |
| 55 | 57 |
"2 3 3 583\n" |
| 56 | 58 |
"2 7 4 565\n" |
| 57 | 59 |
"2 1 5 582\n" |
| 58 | 60 |
"0 4 6 551\n" |
| 59 | 61 |
"2 5 7 385\n" |
| 60 | 62 |
"1 5 8 561\n" |
| 61 | 63 |
"5 3 9 484\n" |
| 62 | 64 |
"7 5 10 904\n" |
| 63 | 65 |
"3 6 11 47\n" |
| 64 | 66 |
"7 6 12 888\n" |
| 65 | 67 |
"3 0 13 747\n" |
| 66 | 68 |
"6 1 14 310\n", |
| 67 | 69 |
|
| 68 | 70 |
"@nodes\n" |
| 69 | 71 |
"label\n" |
| 70 | 72 |
"0\n" |
| 71 | 73 |
"1\n" |
| 72 | 74 |
"2\n" |
| 73 | 75 |
"3\n" |
| 74 | 76 |
"4\n" |
| 75 | 77 |
"5\n" |
| 76 | 78 |
"6\n" |
| 77 | 79 |
"7\n" |
| 78 | 80 |
"@edges\n" |
| 79 | 81 |
" label weight\n" |
| 80 | 82 |
"2 5 0 710\n" |
| 81 | 83 |
"0 5 1 241\n" |
| 82 | 84 |
"2 4 2 856\n" |
| 83 | 85 |
"2 6 3 762\n" |
| 84 | 86 |
"4 1 4 747\n" |
| 85 | 87 |
"6 1 5 962\n" |
| 86 | 88 |
"4 7 6 723\n" |
| 87 | 89 |
"1 7 7 661\n" |
| 88 | 90 |
"2 3 8 376\n" |
| 89 | 91 |
"1 0 9 416\n" |
| 90 | 92 |
"6 7 10 391\n", |
| 91 | 93 |
|
| 92 | 94 |
"@nodes\n" |
| 93 | 95 |
"label\n" |
| 94 | 96 |
"0\n" |
| 95 | 97 |
"1\n" |
| 96 | 98 |
"2\n" |
| 97 | 99 |
"3\n" |
| 98 | 100 |
"4\n" |
| 99 | 101 |
"5\n" |
| 100 | 102 |
"6\n" |
| 101 | 103 |
"7\n" |
| 102 | 104 |
"@edges\n" |
| 103 | 105 |
" label weight\n" |
| 104 | 106 |
"6 2 0 553\n" |
| 105 | 107 |
"0 7 1 653\n" |
| 106 | 108 |
"6 3 2 22\n" |
| 107 | 109 |
"4 7 3 846\n" |
| 108 | 110 |
"7 2 4 981\n" |
| 109 | 111 |
"7 6 5 250\n" |
| 110 | 112 |
"5 2 6 539\n", |
| 111 | 113 |
}; |
| 112 | 114 |
|
| 115 |
void checkMaxMatchingCompile() |
|
| 116 |
{
|
|
| 117 |
typedef concepts::Graph Graph; |
|
| 118 |
typedef Graph::Node Node; |
|
| 119 |
typedef Graph::Edge Edge; |
|
| 120 |
typedef Graph::EdgeMap<bool> MatMap; |
|
| 121 |
|
|
| 122 |
Graph g; |
|
| 123 |
Node n; |
|
| 124 |
Edge e; |
|
| 125 |
MatMap mat(g); |
|
| 126 |
|
|
| 127 |
MaxMatching<Graph> mat_test(g); |
|
| 128 |
const MaxMatching<Graph>& |
|
| 129 |
const_mat_test = mat_test; |
|
| 130 |
|
|
| 131 |
mat_test.init(); |
|
| 132 |
mat_test.greedyInit(); |
|
| 133 |
mat_test.matchingInit(mat); |
|
| 134 |
mat_test.startSparse(); |
|
| 135 |
mat_test.startDense(); |
|
| 136 |
mat_test.run(); |
|
| 137 |
|
|
| 138 |
const_mat_test.matchingSize(); |
|
| 139 |
const_mat_test.matching(e); |
|
| 140 |
const_mat_test.matching(n); |
|
| 141 |
const MaxMatching<Graph>::MatchingMap& mmap = |
|
| 142 |
const_mat_test.matchingMap(); |
|
| 143 |
e = mmap[n]; |
|
| 144 |
const_mat_test.mate(n); |
|
| 145 |
|
|
| 146 |
MaxMatching<Graph>::Status stat = |
|
| 147 |
const_mat_test.status(n); |
|
| 148 |
const MaxMatching<Graph>::StatusMap& smap = |
|
| 149 |
const_mat_test.statusMap(); |
|
| 150 |
stat = smap[n]; |
|
| 151 |
const_mat_test.barrier(n); |
|
| 152 |
} |
|
| 153 |
|
|
| 154 |
void checkMaxWeightedMatchingCompile() |
|
| 155 |
{
|
|
| 156 |
typedef concepts::Graph Graph; |
|
| 157 |
typedef Graph::Node Node; |
|
| 158 |
typedef Graph::Edge Edge; |
|
| 159 |
typedef Graph::EdgeMap<int> WeightMap; |
|
| 160 |
|
|
| 161 |
Graph g; |
|
| 162 |
Node n; |
|
| 163 |
Edge e; |
|
| 164 |
WeightMap w(g); |
|
| 165 |
|
|
| 166 |
MaxWeightedMatching<Graph> mat_test(g, w); |
|
| 167 |
const MaxWeightedMatching<Graph>& |
|
| 168 |
const_mat_test = mat_test; |
|
| 169 |
|
|
| 170 |
mat_test.init(); |
|
| 171 |
mat_test.start(); |
|
| 172 |
mat_test.run(); |
|
| 173 |
|
|
| 174 |
const_mat_test.matchingWeight(); |
|
| 175 |
const_mat_test.matchingSize(); |
|
| 176 |
const_mat_test.matching(e); |
|
| 177 |
const_mat_test.matching(n); |
|
| 178 |
const MaxWeightedMatching<Graph>::MatchingMap& mmap = |
|
| 179 |
const_mat_test.matchingMap(); |
|
| 180 |
e = mmap[n]; |
|
| 181 |
const_mat_test.mate(n); |
|
| 182 |
|
|
| 183 |
int k = 0; |
|
| 184 |
const_mat_test.dualValue(); |
|
| 185 |
const_mat_test.nodeValue(n); |
|
| 186 |
const_mat_test.blossomNum(); |
|
| 187 |
const_mat_test.blossomSize(k); |
|
| 188 |
const_mat_test.blossomValue(k); |
|
| 189 |
} |
|
| 190 |
|
|
| 191 |
void checkMaxWeightedPerfectMatchingCompile() |
|
| 192 |
{
|
|
| 193 |
typedef concepts::Graph Graph; |
|
| 194 |
typedef Graph::Node Node; |
|
| 195 |
typedef Graph::Edge Edge; |
|
| 196 |
typedef Graph::EdgeMap<int> WeightMap; |
|
| 197 |
|
|
| 198 |
Graph g; |
|
| 199 |
Node n; |
|
| 200 |
Edge e; |
|
| 201 |
WeightMap w(g); |
|
| 202 |
|
|
| 203 |
MaxWeightedPerfectMatching<Graph> mat_test(g, w); |
|
| 204 |
const MaxWeightedPerfectMatching<Graph>& |
|
| 205 |
const_mat_test = mat_test; |
|
| 206 |
|
|
| 207 |
mat_test.init(); |
|
| 208 |
mat_test.start(); |
|
| 209 |
mat_test.run(); |
|
| 210 |
|
|
| 211 |
const_mat_test.matchingWeight(); |
|
| 212 |
const_mat_test.matching(e); |
|
| 213 |
const_mat_test.matching(n); |
|
| 214 |
const MaxWeightedPerfectMatching<Graph>::MatchingMap& mmap = |
|
| 215 |
const_mat_test.matchingMap(); |
|
| 216 |
e = mmap[n]; |
|
| 217 |
const_mat_test.mate(n); |
|
| 218 |
|
|
| 219 |
int k = 0; |
|
| 220 |
const_mat_test.dualValue(); |
|
| 221 |
const_mat_test.nodeValue(n); |
|
| 222 |
const_mat_test.blossomNum(); |
|
| 223 |
const_mat_test.blossomSize(k); |
|
| 224 |
const_mat_test.blossomValue(k); |
|
| 225 |
} |
|
| 226 |
|
|
| 113 | 227 |
void checkMatching(const SmartGraph& graph, |
| 114 | 228 |
const MaxMatching<SmartGraph>& mm) {
|
| 115 | 229 |
int num = 0; |
| 116 | 230 |
|
| 117 | 231 |
IntNodeMap comp_index(graph); |
| 118 | 232 |
UnionFind<IntNodeMap> comp(comp_index); |
| 119 | 233 |
|
| 120 | 234 |
int barrier_num = 0; |
| 121 | 235 |
|
| 122 | 236 |
for (NodeIt n(graph); n != INVALID; ++n) {
|
| 123 |
check(mm. |
|
| 237 |
check(mm.status(n) == MaxMatching<SmartGraph>::EVEN || |
|
| 124 | 238 |
mm.matching(n) != INVALID, "Wrong Gallai-Edmonds decomposition"); |
| 125 |
if (mm. |
|
| 239 |
if (mm.status(n) == MaxMatching<SmartGraph>::ODD) {
|
|
| 126 | 240 |
++barrier_num; |
| 127 | 241 |
} else {
|
| 128 | 242 |
comp.insert(n); |
| 129 | 243 |
} |
| 130 | 244 |
} |
| 131 | 245 |
|
| 132 | 246 |
for (EdgeIt e(graph); e != INVALID; ++e) {
|
| 133 | 247 |
if (mm.matching(e)) {
|
| 134 | 248 |
check(e == mm.matching(graph.u(e)), "Wrong matching"); |
| 135 | 249 |
check(e == mm.matching(graph.v(e)), "Wrong matching"); |
| 136 | 250 |
++num; |
| 137 | 251 |
} |
| 138 |
check(mm.decomposition(graph.u(e)) != MaxMatching<SmartGraph>::EVEN || |
|
| 139 |
mm.decomposition(graph.v(e)) != MaxMatching<SmartGraph>::MATCHED, |
|
| 252 |
check(mm.status(graph.u(e)) != MaxMatching<SmartGraph>::EVEN || |
|
| 253 |
mm.status(graph.v(e)) != MaxMatching<SmartGraph>::MATCHED, |
|
| 140 | 254 |
"Wrong Gallai-Edmonds decomposition"); |
| 141 | 255 |
|
| 142 |
check(mm.decomposition(graph.v(e)) != MaxMatching<SmartGraph>::EVEN || |
|
| 143 |
mm.decomposition(graph.u(e)) != MaxMatching<SmartGraph>::MATCHED, |
|
| 256 |
check(mm.status(graph.v(e)) != MaxMatching<SmartGraph>::EVEN || |
|
| 257 |
mm.status(graph.u(e)) != MaxMatching<SmartGraph>::MATCHED, |
|
| 144 | 258 |
"Wrong Gallai-Edmonds decomposition"); |
| 145 | 259 |
|
| 146 |
if (mm.decomposition(graph.u(e)) != MaxMatching<SmartGraph>::ODD && |
|
| 147 |
mm.decomposition(graph.v(e)) != MaxMatching<SmartGraph>::ODD) {
|
|
| 260 |
if (mm.status(graph.u(e)) != MaxMatching<SmartGraph>::ODD && |
|
| 261 |
mm.status(graph.v(e)) != MaxMatching<SmartGraph>::ODD) {
|
|
| 148 | 262 |
comp.join(graph.u(e), graph.v(e)); |
| 149 | 263 |
} |
| 150 | 264 |
} |
| 151 | 265 |
|
| 152 | 266 |
std::set<int> comp_root; |
| 153 | 267 |
int odd_comp_num = 0; |
| 154 | 268 |
for (NodeIt n(graph); n != INVALID; ++n) {
|
| 155 |
if (mm. |
|
| 269 |
if (mm.status(n) != MaxMatching<SmartGraph>::ODD) {
|
|
| 156 | 270 |
int root = comp.find(n); |
| 157 | 271 |
if (comp_root.find(root) == comp_root.end()) {
|
| 158 | 272 |
comp_root.insert(root); |
| 159 | 273 |
if (comp.size(n) % 2 == 1) {
|
| 160 | 274 |
++odd_comp_num; |
| 161 | 275 |
} |
| 162 | 276 |
} |
| 163 | 277 |
} |
| 164 | 278 |
} |
| 165 | 279 |
|
| 166 | 280 |
check(mm.matchingSize() == num, "Wrong matching"); |
| 167 | 281 |
check(2 * num == countNodes(graph) - (odd_comp_num - barrier_num), |
| 168 | 282 |
"Wrong matching"); |
| 169 | 283 |
return; |
| 170 | 284 |
} |
| 171 | 285 |
|
| 172 | 286 |
void checkWeightedMatching(const SmartGraph& graph, |
| 173 | 287 |
const SmartGraph::EdgeMap<int>& weight, |
| 174 | 288 |
const MaxWeightedMatching<SmartGraph>& mwm) {
|
| 175 | 289 |
for (SmartGraph::EdgeIt e(graph); e != INVALID; ++e) {
|
| 176 | 290 |
if (graph.u(e) == graph.v(e)) continue; |
| 177 | 291 |
int rw = mwm.nodeValue(graph.u(e)) + mwm.nodeValue(graph.v(e)); |
| 178 | 292 |
|
| 179 | 293 |
for (int i = 0; i < mwm.blossomNum(); ++i) {
|
| 180 | 294 |
bool s = false, t = false; |
| 181 | 295 |
for (MaxWeightedMatching<SmartGraph>::BlossomIt n(mwm, i); |
| 182 | 296 |
n != INVALID; ++n) {
|
| 183 | 297 |
if (graph.u(e) == n) s = true; |
| 184 | 298 |
if (graph.v(e) == n) t = true; |
| 185 | 299 |
} |
| 186 | 300 |
if (s == true && t == true) {
|
| 187 | 301 |
rw += mwm.blossomValue(i); |
| 188 | 302 |
} |
| 189 | 303 |
} |
| 190 | 304 |
rw -= weight[e] * mwm.dualScale; |
| 191 | 305 |
|
| 192 | 306 |
check(rw >= 0, "Negative reduced weight"); |
| 193 | 307 |
check(rw == 0 || !mwm.matching(e), |
| 194 | 308 |
"Non-zero reduced weight on matching edge"); |
| 195 | 309 |
} |
| 196 | 310 |
|
| 197 | 311 |
int pv = 0; |
| 198 | 312 |
for (SmartGraph::NodeIt n(graph); n != INVALID; ++n) {
|
| 199 | 313 |
if (mwm.matching(n) != INVALID) {
|
| 200 | 314 |
check(mwm.nodeValue(n) >= 0, "Invalid node value"); |
| 201 | 315 |
pv += weight[mwm.matching(n)]; |
| 202 | 316 |
SmartGraph::Node o = graph.target(mwm.matching(n)); |
| 203 | 317 |
check(mwm.mate(n) == o, "Invalid matching"); |
| 204 | 318 |
check(mwm.matching(n) == graph.oppositeArc(mwm.matching(o)), |
| 205 | 319 |
"Invalid matching"); |
| 206 | 320 |
} else {
|
| 207 | 321 |
check(mwm.mate(n) == INVALID, "Invalid matching"); |
| 208 | 322 |
check(mwm.nodeValue(n) == 0, "Invalid matching"); |
| 209 | 323 |
} |
| 210 | 324 |
} |
| 211 | 325 |
|
| 212 | 326 |
int dv = 0; |
| 213 | 327 |
for (SmartGraph::NodeIt n(graph); n != INVALID; ++n) {
|
| 214 | 328 |
dv += mwm.nodeValue(n); |
| 215 | 329 |
} |
| 216 | 330 |
|
| 217 | 331 |
for (int i = 0; i < mwm.blossomNum(); ++i) {
|
| 218 | 332 |
check(mwm.blossomValue(i) >= 0, "Invalid blossom value"); |
| 219 | 333 |
check(mwm.blossomSize(i) % 2 == 1, "Even blossom size"); |
| 220 | 334 |
dv += mwm.blossomValue(i) * ((mwm.blossomSize(i) - 1) / 2); |
| 221 | 335 |
} |
| 222 | 336 |
|
| 223 | 337 |
check(pv * mwm.dualScale == dv * 2, "Wrong duality"); |
| 224 | 338 |
|
| 225 | 339 |
return; |
| 226 | 340 |
} |
| 227 | 341 |
|
| 228 | 342 |
void checkWeightedPerfectMatching(const SmartGraph& graph, |
| 229 | 343 |
const SmartGraph::EdgeMap<int>& weight, |
| 230 | 344 |
const MaxWeightedPerfectMatching<SmartGraph>& mwpm) {
|
| 231 | 345 |
for (SmartGraph::EdgeIt e(graph); e != INVALID; ++e) {
|
| 232 | 346 |
if (graph.u(e) == graph.v(e)) continue; |
| 233 | 347 |
int rw = mwpm.nodeValue(graph.u(e)) + mwpm.nodeValue(graph.v(e)); |
| 234 | 348 |
|
| 235 | 349 |
for (int i = 0; i < mwpm.blossomNum(); ++i) {
|
| 236 | 350 |
bool s = false, t = false; |
| 237 | 351 |
for (MaxWeightedPerfectMatching<SmartGraph>::BlossomIt n(mwpm, i); |
| 238 | 352 |
n != INVALID; ++n) {
|
| 239 | 353 |
if (graph.u(e) == n) s = true; |
| 240 | 354 |
if (graph.v(e) == n) t = true; |
| 241 | 355 |
} |
| 242 | 356 |
if (s == true && t == true) {
|
| 243 | 357 |
rw += mwpm.blossomValue(i); |
| 244 | 358 |
} |
| 245 | 359 |
} |
| 246 | 360 |
rw -= weight[e] * mwpm.dualScale; |
| 247 | 361 |
|
| 248 | 362 |
check(rw >= 0, "Negative reduced weight"); |
| 249 | 363 |
check(rw == 0 || !mwpm.matching(e), |
| 250 | 364 |
"Non-zero reduced weight on matching edge"); |
| 251 | 365 |
} |
| 252 | 366 |
|
| 253 | 367 |
int pv = 0; |
| 254 | 368 |
for (SmartGraph::NodeIt n(graph); n != INVALID; ++n) {
|
| 255 | 369 |
check(mwpm.matching(n) != INVALID, "Non perfect"); |
| 256 | 370 |
pv += weight[mwpm.matching(n)]; |
| 257 | 371 |
SmartGraph::Node o = graph.target(mwpm.matching(n)); |
| 258 | 372 |
check(mwpm.mate(n) == o, "Invalid matching"); |
| 259 | 373 |
check(mwpm.matching(n) == graph.oppositeArc(mwpm.matching(o)), |
| 260 | 374 |
"Invalid matching"); |
| 261 | 375 |
} |
| 262 | 376 |
|
| 263 | 377 |
int dv = 0; |
| 264 | 378 |
for (SmartGraph::NodeIt n(graph); n != INVALID; ++n) {
|
| 265 | 379 |
dv += mwpm.nodeValue(n); |
| 266 | 380 |
} |
| 267 | 381 |
|
| 268 | 382 |
for (int i = 0; i < mwpm.blossomNum(); ++i) {
|
| 269 | 383 |
check(mwpm.blossomValue(i) >= 0, "Invalid blossom value"); |
| 270 | 384 |
check(mwpm.blossomSize(i) % 2 == 1, "Even blossom size"); |
| 271 | 385 |
dv += mwpm.blossomValue(i) * ((mwpm.blossomSize(i) - 1) / 2); |
| 272 | 386 |
} |
| 273 | 387 |
|
| 274 | 388 |
check(pv * mwpm.dualScale == dv * 2, "Wrong duality"); |
| 275 | 389 |
|
| 276 | 390 |
return; |
| 277 | 391 |
} |
| 278 | 392 |
|
| 279 | 393 |
|
| 280 | 394 |
int main() {
|
| 281 | 395 |
|
| 282 | 396 |
for (int i = 0; i < lgfn; ++i) {
|
| 283 | 397 |
SmartGraph graph; |
| 284 | 398 |
SmartGraph::EdgeMap<int> weight(graph); |
| 285 | 399 |
|
| 286 | 400 |
istringstream lgfs(lgf[i]); |
| 287 | 401 |
graphReader(graph, lgfs). |
| 288 | 402 |
edgeMap("weight", weight).run();
|
| 289 | 403 |
|
| 290 | 404 |
MaxMatching<SmartGraph> mm(graph); |
| 291 | 405 |
mm.run(); |
| 292 | 406 |
checkMatching(graph, mm); |
| 293 | 407 |
|
| 294 | 408 |
MaxWeightedMatching<SmartGraph> mwm(graph, weight); |
| 295 | 409 |
mwm.run(); |
| 296 | 410 |
checkWeightedMatching(graph, weight, mwm); |
| 297 | 411 |
|
| 298 | 412 |
MaxWeightedPerfectMatching<SmartGraph> mwpm(graph, weight); |
| 299 | 413 |
bool perfect = mwpm.run(); |
| 300 | 414 |
|
| 301 | 415 |
check(perfect == (mm.matchingSize() * 2 == countNodes(graph)), |
| 302 | 416 |
"Perfect matching found"); |
| 303 | 417 |
|
| 304 | 418 |
if (perfect) {
|
| 305 | 419 |
checkWeightedPerfectMatching(graph, weight, mwpm); |
| 306 | 420 |
} |
| 307 | 421 |
} |
| 308 | 422 |
|
| 309 | 423 |
return 0; |
| 310 | 424 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 |
* Copyright (C) 2003- |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include "test_tools.h" |
| 20 | 20 |
|
| 21 |
#include <lemon/config.h> |
|
| 21 | 22 |
|
| 22 |
#ifdef HAVE_CONFIG_H |
|
| 23 |
#include <lemon/config.h> |
|
| 24 |
#endif |
|
| 25 |
|
|
| 26 |
#ifdef |
|
| 23 |
#ifdef LEMON_HAVE_CPLEX |
|
| 27 | 24 |
#include <lemon/cplex.h> |
| 28 | 25 |
#endif |
| 29 | 26 |
|
| 30 |
#ifdef |
|
| 27 |
#ifdef LEMON_HAVE_GLPK |
|
| 31 | 28 |
#include <lemon/glpk.h> |
| 32 | 29 |
#endif |
| 33 | 30 |
|
| 31 |
#ifdef LEMON_HAVE_CBC |
|
| 32 |
#include <lemon/cbc.h> |
|
| 33 |
#endif |
|
| 34 |
|
|
| 34 | 35 |
|
| 35 | 36 |
using namespace lemon; |
| 36 | 37 |
|
| 37 | 38 |
void solveAndCheck(MipSolver& mip, MipSolver::ProblemType stat, |
| 38 | 39 |
double exp_opt) {
|
| 39 | 40 |
using std::string; |
| 40 | 41 |
|
| 41 | 42 |
mip.solve(); |
| 42 | 43 |
//int decimal,sign; |
| 43 | 44 |
std::ostringstream buf; |
| 44 | 45 |
buf << "Type should be: " << int(stat)<<" and it is "<<int(mip.type()); |
| 45 | 46 |
|
| 46 | 47 |
|
| 47 | 48 |
// itoa(stat,buf1, 10); |
| 48 | 49 |
check(mip.type()==stat, buf.str()); |
| 49 | 50 |
|
| 50 | 51 |
if (stat == MipSolver::OPTIMAL) {
|
| 51 | 52 |
std::ostringstream sbuf; |
| 52 |
|
|
| 53 |
sbuf << "Wrong optimal value ("<< mip.solValue()
|
|
| 54 |
<<" instead of " << exp_opt << ")"; |
|
| 53 | 55 |
check(std::abs(mip.solValue()-exp_opt) < 1e-3, sbuf.str()); |
| 54 | 56 |
//+ecvt(exp_opt,2) |
| 55 | 57 |
} |
| 56 | 58 |
} |
| 57 | 59 |
|
| 58 | 60 |
void aTest(MipSolver& mip) |
| 59 | 61 |
{
|
| 60 |
//The following example is very simple |
|
| 62 |
//The following example is very simple |
|
| 61 | 63 |
|
| 62 | 64 |
|
| 63 | 65 |
typedef MipSolver::Row Row; |
| 64 | 66 |
typedef MipSolver::Col Col; |
| 65 | 67 |
|
| 66 | 68 |
|
| 67 |
|
|
| 68 | 69 |
Col x1 = mip.addCol(); |
| 69 | 70 |
Col x2 = mip.addCol(); |
| 70 | 71 |
|
| 71 | 72 |
|
| 72 | 73 |
//Objective function |
| 73 | 74 |
mip.obj(x1); |
| 74 | 75 |
|
| 75 | 76 |
mip.max(); |
| 76 | 77 |
|
| 77 |
|
|
| 78 | 78 |
//Unconstrained optimization |
| 79 | 79 |
mip.solve(); |
| 80 | 80 |
//Check it out! |
| 81 | 81 |
|
| 82 | 82 |
//Constraints |
| 83 |
mip.addRow(2*x1+x2 <=2); |
|
| 84 |
mip.addRow(x1-2*x2 <=0); |
|
| 83 |
mip.addRow(2 * x1 + x2 <= 2); |
|
| 84 |
Row y2 = mip.addRow(x1 - 2 * x2 <= 0); |
|
| 85 | 85 |
|
| 86 | 86 |
//Nonnegativity of the variable x1 |
| 87 | 87 |
mip.colLowerBound(x1, 0); |
| 88 | 88 |
|
| 89 |
|
|
| 89 | 90 |
//Maximization of x1 |
| 90 | 91 |
//over the triangle with vertices (0,0),(4/5,2/5),(0,2) |
| 91 | 92 |
double expected_opt=4.0/5.0; |
| 92 | 93 |
solveAndCheck(mip, MipSolver::OPTIMAL, expected_opt); |
| 93 | 94 |
|
| 95 |
|
|
| 94 | 96 |
//Restrict x2 to integer |
| 95 | 97 |
mip.colType(x2,MipSolver::INTEGER); |
| 96 | 98 |
expected_opt=1.0/2.0; |
| 97 | 99 |
solveAndCheck(mip, MipSolver::OPTIMAL, expected_opt); |
| 98 | 100 |
|
| 99 | 101 |
|
| 100 | 102 |
//Restrict both to integer |
| 101 | 103 |
mip.colType(x1,MipSolver::INTEGER); |
| 102 | 104 |
expected_opt=0; |
| 103 | 105 |
solveAndCheck(mip, MipSolver::OPTIMAL, expected_opt); |
| 104 | 106 |
|
| 105 |
|
|
| 107 |
//Erase a variable |
|
| 108 |
mip.erase(x2); |
|
| 109 |
mip.rowUpperBound(y2, 8); |
|
| 110 |
expected_opt=1; |
|
| 111 |
solveAndCheck(mip, MipSolver::OPTIMAL, expected_opt); |
|
| 106 | 112 |
|
| 107 | 113 |
} |
| 108 | 114 |
|
| 109 | 115 |
|
| 116 |
template<class MIP> |
|
| 117 |
void cloneTest() |
|
| 118 |
{
|
|
| 119 |
|
|
| 120 |
MIP* mip = new MIP(); |
|
| 121 |
MIP* mipnew = mip->newSolver(); |
|
| 122 |
MIP* mipclone = mip->cloneSolver(); |
|
| 123 |
delete mip; |
|
| 124 |
delete mipnew; |
|
| 125 |
delete mipclone; |
|
| 126 |
} |
|
| 127 |
|
|
| 110 | 128 |
int main() |
| 111 | 129 |
{
|
| 112 | 130 |
|
| 113 |
#ifdef |
|
| 131 |
#ifdef LEMON_HAVE_GLPK |
|
| 114 | 132 |
{
|
| 115 | 133 |
GlpkMip mip1; |
| 116 | 134 |
aTest(mip1); |
| 135 |
cloneTest<GlpkMip>(); |
|
| 117 | 136 |
} |
| 118 | 137 |
#endif |
| 119 | 138 |
|
| 120 |
#ifdef |
|
| 139 |
#ifdef LEMON_HAVE_CPLEX |
|
| 121 | 140 |
try {
|
| 122 | 141 |
CplexMip mip2; |
| 123 | 142 |
aTest(mip2); |
| 143 |
cloneTest<CplexMip>(); |
|
| 124 | 144 |
} catch (CplexEnv::LicenseError& error) {
|
| 125 |
#ifdef LEMON_FORCE_CPLEX_CHECK |
|
| 126 | 145 |
check(false, error.what()); |
| 127 |
#else |
|
| 128 |
std::cerr << error.what() << std::endl; |
|
| 129 |
|
|
| 146 |
} |
|
| 130 | 147 |
#endif |
| 148 |
|
|
| 149 |
#ifdef LEMON_HAVE_CBC |
|
| 150 |
{
|
|
| 151 |
CbcMip mip1; |
|
| 152 |
aTest(mip1); |
|
| 153 |
cloneTest<CbcMip>(); |
|
| 131 | 154 |
} |
| 132 | 155 |
#endif |
| 133 | 156 |
|
| 134 | 157 |
return 0; |
| 135 | 158 |
|
| 136 | 159 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <iostream> |
| 20 | 20 |
|
| 21 | 21 |
#include "test_tools.h" |
| 22 | 22 |
#include <lemon/smart_graph.h> |
| 23 | 23 |
#include <lemon/preflow.h> |
| 24 | 24 |
#include <lemon/concepts/digraph.h> |
| 25 | 25 |
#include <lemon/concepts/maps.h> |
| 26 | 26 |
#include <lemon/lgf_reader.h> |
| 27 | 27 |
#include <lemon/elevator.h> |
| 28 | 28 |
|
| 29 | 29 |
using namespace lemon; |
| 30 | 30 |
|
| 31 | 31 |
char test_lgf[] = |
| 32 | 32 |
"@nodes\n" |
| 33 | 33 |
"label\n" |
| 34 | 34 |
"0\n" |
| 35 | 35 |
"1\n" |
| 36 | 36 |
"2\n" |
| 37 | 37 |
"3\n" |
| 38 | 38 |
"4\n" |
| 39 | 39 |
"5\n" |
| 40 | 40 |
"6\n" |
| 41 | 41 |
"7\n" |
| 42 | 42 |
"8\n" |
| 43 | 43 |
"9\n" |
| 44 | 44 |
"@arcs\n" |
| 45 | 45 |
" label capacity\n" |
| 46 | 46 |
"0 1 0 20\n" |
| 47 | 47 |
"0 2 1 0\n" |
| 48 | 48 |
"1 1 2 3\n" |
| 49 | 49 |
"1 2 3 8\n" |
| 50 | 50 |
"1 3 4 8\n" |
| 51 | 51 |
"2 5 5 5\n" |
| 52 | 52 |
"3 2 6 5\n" |
| 53 | 53 |
"3 5 7 5\n" |
| 54 | 54 |
"3 6 8 5\n" |
| 55 | 55 |
"4 3 9 3\n" |
| 56 | 56 |
"5 7 10 3\n" |
| 57 | 57 |
"5 6 11 10\n" |
| 58 | 58 |
"5 8 12 10\n" |
| 59 | 59 |
"6 8 13 8\n" |
| 60 | 60 |
"8 9 14 20\n" |
| 61 | 61 |
"8 1 15 5\n" |
| 62 | 62 |
"9 5 16 5\n" |
| 63 | 63 |
"@attributes\n" |
| 64 | 64 |
"source 1\n" |
| 65 | 65 |
"target 8\n"; |
| 66 | 66 |
|
| 67 | 67 |
void checkPreflowCompile() |
| 68 | 68 |
{
|
| 69 | 69 |
typedef int VType; |
| 70 | 70 |
typedef concepts::Digraph Digraph; |
| 71 | 71 |
|
| 72 | 72 |
typedef Digraph::Node Node; |
| 73 | 73 |
typedef Digraph::Arc Arc; |
| 74 | 74 |
typedef concepts::ReadMap<Arc,VType> CapMap; |
| 75 | 75 |
typedef concepts::ReadWriteMap<Arc,VType> FlowMap; |
| 76 | 76 |
typedef concepts::WriteMap<Node,bool> CutMap; |
| 77 | 77 |
|
| 78 | 78 |
typedef Elevator<Digraph, Digraph::Node> Elev; |
| 79 | 79 |
typedef LinkedElevator<Digraph, Digraph::Node> LinkedElev; |
| 80 | 80 |
|
| 81 | 81 |
Digraph g; |
| 82 | 82 |
Node n; |
| 83 | 83 |
Arc e; |
| 84 | 84 |
CapMap cap; |
| 85 | 85 |
FlowMap flow; |
| 86 | 86 |
CutMap cut; |
| 87 |
VType v; |
|
| 88 |
bool b; |
|
| 87 | 89 |
|
| 88 |
Preflow<Digraph, CapMap> |
|
| 89 |
::SetFlowMap<FlowMap> |
|
| 90 |
::SetElevator<Elev> |
|
| 91 |
::SetStandardElevator<LinkedElev> |
|
| 92 |
|
|
| 90 |
typedef Preflow<Digraph, CapMap> |
|
| 91 |
::SetFlowMap<FlowMap> |
|
| 92 |
::SetElevator<Elev> |
|
| 93 |
::SetStandardElevator<LinkedElev> |
|
| 94 |
::Create PreflowType; |
|
| 95 |
PreflowType preflow_test(g, cap, n, n); |
|
| 96 |
const PreflowType& const_preflow_test = preflow_test; |
|
| 97 |
|
|
| 98 |
const PreflowType::Elevator& elev = const_preflow_test.elevator(); |
|
| 99 |
preflow_test.elevator(const_cast<PreflowType::Elevator&>(elev)); |
|
| 100 |
PreflowType::Tolerance tol = const_preflow_test.tolerance(); |
|
| 101 |
preflow_test.tolerance(tol); |
|
| 93 | 102 |
|
| 94 |
preflow_test.capacityMap(cap); |
|
| 95 |
flow = preflow_test.flowMap(); |
|
| 96 |
preflow_test.flowMap(flow); |
|
| 97 |
preflow_test.source(n); |
|
| 98 |
preflow_test |
|
| 103 |
preflow_test |
|
| 104 |
.capacityMap(cap) |
|
| 105 |
.flowMap(flow) |
|
| 106 |
.source(n) |
|
| 107 |
.target(n); |
|
| 99 | 108 |
|
| 100 | 109 |
preflow_test.init(); |
| 101 | 110 |
preflow_test.init(cap); |
| 102 | 111 |
preflow_test.startFirstPhase(); |
| 103 | 112 |
preflow_test.startSecondPhase(); |
| 104 | 113 |
preflow_test.run(); |
| 105 | 114 |
preflow_test.runMinCut(); |
| 106 | 115 |
|
| 107 |
preflow_test.flowValue(); |
|
| 108 |
preflow_test.minCut(n); |
|
| 109 |
preflow_test.minCutMap(cut); |
|
| 110 |
preflow_test.flow(e); |
|
| 111 |
|
|
| 116 |
v = const_preflow_test.flowValue(); |
|
| 117 |
v = const_preflow_test.flow(e); |
|
| 118 |
const FlowMap& fm = const_preflow_test.flowMap(); |
|
| 119 |
b = const_preflow_test.minCut(n); |
|
| 120 |
const_preflow_test.minCutMap(cut); |
|
| 121 |
|
|
| 122 |
ignore_unused_variable_warning(fm); |
|
| 112 | 123 |
} |
| 113 | 124 |
|
| 114 | 125 |
int cutValue (const SmartDigraph& g, |
| 115 | 126 |
const SmartDigraph::NodeMap<bool>& cut, |
| 116 | 127 |
const SmartDigraph::ArcMap<int>& cap) {
|
| 117 | 128 |
|
| 118 | 129 |
int c=0; |
| 119 | 130 |
for(SmartDigraph::ArcIt e(g); e!=INVALID; ++e) {
|
| 120 | 131 |
if (cut[g.source(e)] && !cut[g.target(e)]) c+=cap[e]; |
| 121 | 132 |
} |
| 122 | 133 |
return c; |
| 123 | 134 |
} |
| 124 | 135 |
|
| 125 | 136 |
bool checkFlow(const SmartDigraph& g, |
| 126 | 137 |
const SmartDigraph::ArcMap<int>& flow, |
| 127 | 138 |
const SmartDigraph::ArcMap<int>& cap, |
| 128 | 139 |
SmartDigraph::Node s, SmartDigraph::Node t) {
|
| 129 | 140 |
|
| 130 | 141 |
for (SmartDigraph::ArcIt e(g); e != INVALID; ++e) {
|
| 131 | 142 |
if (flow[e] < 0 || flow[e] > cap[e]) return false; |
| 132 | 143 |
} |
| 133 | 144 |
|
| 134 | 145 |
for (SmartDigraph::NodeIt n(g); n != INVALID; ++n) {
|
| 135 | 146 |
if (n == s || n == t) continue; |
| 136 | 147 |
int sum = 0; |
| 137 | 148 |
for (SmartDigraph::OutArcIt e(g, n); e != INVALID; ++e) {
|
| 138 | 149 |
sum += flow[e]; |
| 139 | 150 |
} |
| 140 | 151 |
for (SmartDigraph::InArcIt e(g, n); e != INVALID; ++e) {
|
| 141 | 152 |
sum -= flow[e]; |
| 142 | 153 |
} |
| 143 | 154 |
if (sum != 0) return false; |
| 144 | 155 |
} |
| 145 | 156 |
return true; |
| 146 | 157 |
} |
| 147 | 158 |
|
| 148 | 159 |
int main() {
|
| 149 | 160 |
|
| 150 | 161 |
typedef SmartDigraph Digraph; |
| 151 | 162 |
|
| 152 | 163 |
typedef Digraph::Node Node; |
| 153 | 164 |
typedef Digraph::NodeIt NodeIt; |
| 154 | 165 |
typedef Digraph::ArcIt ArcIt; |
| 155 | 166 |
typedef Digraph::ArcMap<int> CapMap; |
| 156 | 167 |
typedef Digraph::ArcMap<int> FlowMap; |
| 157 | 168 |
typedef Digraph::NodeMap<bool> CutMap; |
| 158 | 169 |
|
| 159 | 170 |
typedef Preflow<Digraph, CapMap> PType; |
| 160 | 171 |
|
| 161 | 172 |
Digraph g; |
| 162 | 173 |
Node s, t; |
| 163 | 174 |
CapMap cap(g); |
| 164 | 175 |
std::istringstream input(test_lgf); |
| 165 | 176 |
DigraphReader<Digraph>(g,input). |
| 166 | 177 |
arcMap("capacity", cap).
|
| 167 | 178 |
node("source",s).
|
| 168 | 179 |
node("target",t).
|
| 169 | 180 |
run(); |
| 170 | 181 |
|
| 171 | 182 |
PType preflow_test(g, cap, s, t); |
| 172 | 183 |
preflow_test.run(); |
| 173 | 184 |
|
| 174 | 185 |
check(checkFlow(g, preflow_test.flowMap(), cap, s, t), |
| 175 | 186 |
"The flow is not feasible."); |
| 176 | 187 |
|
| 177 | 188 |
CutMap min_cut(g); |
| 178 | 189 |
preflow_test.minCutMap(min_cut); |
| 179 | 190 |
int min_cut_value=cutValue(g,min_cut,cap); |
| 180 | 191 |
|
| 181 | 192 |
check(preflow_test.flowValue() == min_cut_value, |
| 182 | 193 |
"The max flow value is not equal to the three min cut values."); |
| 183 | 194 |
|
| 184 | 195 |
FlowMap flow(g); |
| 185 | 196 |
for(ArcIt e(g); e!=INVALID; ++e) flow[e] = preflow_test.flowMap()[e]; |
| 186 | 197 |
|
| 187 | 198 |
int flow_value=preflow_test.flowValue(); |
| 188 | 199 |
|
| 189 | 200 |
for(ArcIt e(g); e!=INVALID; ++e) cap[e]=2*cap[e]; |
| 190 | 201 |
preflow_test.init(flow); |
| 191 | 202 |
preflow_test.startFirstPhase(); |
| 192 | 203 |
|
| 193 | 204 |
CutMap min_cut1(g); |
| 194 | 205 |
preflow_test.minCutMap(min_cut1); |
| 195 | 206 |
min_cut_value=cutValue(g,min_cut1,cap); |
| 196 | 207 |
|
| 197 | 208 |
check(preflow_test.flowValue() == min_cut_value && |
| 198 | 209 |
min_cut_value == 2*flow_value, |
| 199 | 210 |
"The max flow value or the min cut value is wrong."); |
| 200 | 211 |
|
| 201 | 212 |
preflow_test.startSecondPhase(); |
| 202 | 213 |
|
| 203 | 214 |
check(checkFlow(g, preflow_test.flowMap(), cap, s, t), |
| 204 | 215 |
"The flow is not feasible."); |
| 205 | 216 |
|
| 206 | 217 |
CutMap min_cut2(g); |
| 207 | 218 |
preflow_test.minCutMap(min_cut2); |
| 208 | 219 |
min_cut_value=cutValue(g,min_cut2,cap); |
| 209 | 220 |
|
| 210 | 221 |
check(preflow_test.flowValue() == min_cut_value && |
| 211 | 222 |
min_cut_value == 2*flow_value, |
| 212 | 223 |
"The max flow value or the three min cut values were not doubled"); |
| 213 | 224 |
|
| 214 | 225 |
|
| 215 | 226 |
preflow_test.flowMap(flow); |
| 216 | 227 |
|
| 217 | 228 |
NodeIt tmp1(g,s); |
| 218 | 229 |
++tmp1; |
| 219 | 230 |
if ( tmp1 != INVALID ) s=tmp1; |
| 220 | 231 |
|
| 221 | 232 |
NodeIt tmp2(g,t); |
| 222 | 233 |
++tmp2; |
| 223 | 234 |
if ( tmp2 != INVALID ) t=tmp2; |
| 224 | 235 |
|
| 225 | 236 |
preflow_test.source(s); |
| 226 | 237 |
preflow_test.target(t); |
| 227 | 238 |
|
| 228 | 239 |
preflow_test.run(); |
| 229 | 240 |
|
| 230 | 241 |
CutMap min_cut3(g); |
| 231 | 242 |
preflow_test.minCutMap(min_cut3); |
| 232 | 243 |
min_cut_value=cutValue(g,min_cut3,cap); |
| 233 | 244 |
|
| 234 | 245 |
|
| 235 | 246 |
check(preflow_test.flowValue() == min_cut_value, |
| 236 | 247 |
"The max flow value or the three min cut values are incorrect."); |
| 237 | 248 |
|
| 238 | 249 |
return 0; |
| 239 | 250 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <iostream> |
| 20 | 20 |
|
| 21 | 21 |
#include <lemon/list_graph.h> |
| 22 | 22 |
#include <lemon/lgf_reader.h> |
| 23 | 23 |
#include <lemon/path.h> |
| 24 | 24 |
#include <lemon/suurballe.h> |
| 25 |
#include <lemon/concepts/digraph.h> |
|
| 25 | 26 |
|
| 26 | 27 |
#include "test_tools.h" |
| 27 | 28 |
|
| 28 | 29 |
using namespace lemon; |
| 29 | 30 |
|
| 30 | 31 |
char test_lgf[] = |
| 31 | 32 |
"@nodes\n" |
| 32 |
"label supply1 supply2 supply3\n" |
|
| 33 |
"1 0 20 27\n" |
|
| 34 |
"2 0 -4 0\n" |
|
| 35 |
"3 0 0 0\n" |
|
| 36 |
"4 0 0 0\n" |
|
| 37 |
"5 0 9 0\n" |
|
| 38 |
"6 0 -6 0\n" |
|
| 39 |
"7 0 0 0\n" |
|
| 40 |
"8 0 0 0\n" |
|
| 41 |
"9 0 3 0\n" |
|
| 42 |
"10 0 -2 0\n" |
|
| 43 |
"11 0 0 0\n" |
|
| 44 |
" |
|
| 33 |
"label\n" |
|
| 34 |
"1\n" |
|
| 35 |
"2\n" |
|
| 36 |
"3\n" |
|
| 37 |
"4\n" |
|
| 38 |
"5\n" |
|
| 39 |
"6\n" |
|
| 40 |
"7\n" |
|
| 41 |
"8\n" |
|
| 42 |
"9\n" |
|
| 43 |
"10\n" |
|
| 44 |
"11\n" |
|
| 45 |
"12\n" |
|
| 45 | 46 |
"@arcs\n" |
| 46 |
" cost capacity lower1 lower2\n" |
|
| 47 |
" 1 2 70 11 0 8\n" |
|
| 48 |
" 1 3 150 3 0 1\n" |
|
| 49 |
" 1 4 80 15 0 2\n" |
|
| 50 |
" 2 8 80 12 0 0\n" |
|
| 51 |
" 3 5 140 5 0 3\n" |
|
| 52 |
" 4 6 60 10 0 1\n" |
|
| 53 |
" 4 7 80 2 0 0\n" |
|
| 54 |
" 4 8 110 3 0 0\n" |
|
| 55 |
" 5 7 60 14 0 0\n" |
|
| 56 |
" 5 11 120 12 0 0\n" |
|
| 57 |
" 6 3 0 3 0 0\n" |
|
| 58 |
" 6 9 140 4 0 0\n" |
|
| 59 |
" 6 10 90 8 0 0\n" |
|
| 60 |
" 7 1 30 5 0 0\n" |
|
| 61 |
" 8 12 60 16 0 4\n" |
|
| 62 |
" 9 12 50 6 0 0\n" |
|
| 63 |
"10 12 70 13 0 5\n" |
|
| 64 |
"10 2 100 7 0 0\n" |
|
| 65 |
"10 7 60 10 0 0\n" |
|
| 66 |
"11 10 20 14 0 6\n" |
|
| 67 |
"12 11 30 10 0 0\n" |
|
| 47 |
" length\n" |
|
| 48 |
" 1 2 70\n" |
|
| 49 |
" 1 3 150\n" |
|
| 50 |
" 1 4 80\n" |
|
| 51 |
" 2 8 80\n" |
|
| 52 |
" 3 5 140\n" |
|
| 53 |
" 4 6 60\n" |
|
| 54 |
" 4 7 80\n" |
|
| 55 |
" 4 8 110\n" |
|
| 56 |
" 5 7 60\n" |
|
| 57 |
" 5 11 120\n" |
|
| 58 |
" 6 3 0\n" |
|
| 59 |
" 6 9 140\n" |
|
| 60 |
" 6 10 90\n" |
|
| 61 |
" 7 1 30\n" |
|
| 62 |
" 8 12 60\n" |
|
| 63 |
" 9 12 50\n" |
|
| 64 |
"10 12 70\n" |
|
| 65 |
"10 2 100\n" |
|
| 66 |
"10 7 60\n" |
|
| 67 |
"11 10 20\n" |
|
| 68 |
"12 11 30\n" |
|
| 68 | 69 |
"@attributes\n" |
| 69 | 70 |
"source 1\n" |
| 70 | 71 |
"target 12\n" |
| 71 | 72 |
"@end\n"; |
| 72 | 73 |
|
| 74 |
// Check the interface of Suurballe |
|
| 75 |
void checkSuurballeCompile() |
|
| 76 |
{
|
|
| 77 |
typedef int VType; |
|
| 78 |
typedef concepts::Digraph Digraph; |
|
| 79 |
|
|
| 80 |
typedef Digraph::Node Node; |
|
| 81 |
typedef Digraph::Arc Arc; |
|
| 82 |
typedef concepts::ReadMap<Arc, VType> LengthMap; |
|
| 83 |
|
|
| 84 |
typedef Suurballe<Digraph, LengthMap> SuurballeType; |
|
| 85 |
|
|
| 86 |
Digraph g; |
|
| 87 |
Node n; |
|
| 88 |
Arc e; |
|
| 89 |
LengthMap len; |
|
| 90 |
SuurballeType::FlowMap flow(g); |
|
| 91 |
SuurballeType::PotentialMap pi(g); |
|
| 92 |
|
|
| 93 |
SuurballeType suurb_test(g, len); |
|
| 94 |
const SuurballeType& const_suurb_test = suurb_test; |
|
| 95 |
|
|
| 96 |
suurb_test |
|
| 97 |
.flowMap(flow) |
|
| 98 |
.potentialMap(pi); |
|
| 99 |
|
|
| 100 |
int k; |
|
| 101 |
k = suurb_test.run(n, n); |
|
| 102 |
k = suurb_test.run(n, n, k); |
|
| 103 |
suurb_test.init(n); |
|
| 104 |
k = suurb_test.findFlow(n); |
|
| 105 |
k = suurb_test.findFlow(n, k); |
|
| 106 |
suurb_test.findPaths(); |
|
| 107 |
|
|
| 108 |
int f; |
|
| 109 |
VType c; |
|
| 110 |
c = const_suurb_test.totalLength(); |
|
| 111 |
f = const_suurb_test.flow(e); |
|
| 112 |
const SuurballeType::FlowMap& fm = |
|
| 113 |
const_suurb_test.flowMap(); |
|
| 114 |
c = const_suurb_test.potential(n); |
|
| 115 |
const SuurballeType::PotentialMap& pm = |
|
| 116 |
const_suurb_test.potentialMap(); |
|
| 117 |
k = const_suurb_test.pathNum(); |
|
| 118 |
Path<Digraph> p = const_suurb_test.path(k); |
|
| 119 |
|
|
| 120 |
ignore_unused_variable_warning(fm); |
|
| 121 |
ignore_unused_variable_warning(pm); |
|
| 122 |
} |
|
| 123 |
|
|
| 73 | 124 |
// Check the feasibility of the flow |
| 74 | 125 |
template <typename Digraph, typename FlowMap> |
| 75 | 126 |
bool checkFlow( const Digraph& gr, const FlowMap& flow, |
| 76 | 127 |
typename Digraph::Node s, typename Digraph::Node t, |
| 77 | 128 |
int value ) |
| 78 | 129 |
{
|
| 79 | 130 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 80 | 131 |
for (ArcIt e(gr); e != INVALID; ++e) |
| 81 | 132 |
if (!(flow[e] == 0 || flow[e] == 1)) return false; |
| 82 | 133 |
|
| 83 | 134 |
for (NodeIt n(gr); n != INVALID; ++n) {
|
| 84 | 135 |
int sum = 0; |
| 85 | 136 |
for (OutArcIt e(gr, n); e != INVALID; ++e) |
| 86 | 137 |
sum += flow[e]; |
| 87 | 138 |
for (InArcIt e(gr, n); e != INVALID; ++e) |
| 88 | 139 |
sum -= flow[e]; |
| 89 | 140 |
if (n == s && sum != value) return false; |
| 90 | 141 |
if (n == t && sum != -value) return false; |
| 91 | 142 |
if (n != s && n != t && sum != 0) return false; |
| 92 | 143 |
} |
| 93 | 144 |
|
| 94 | 145 |
return true; |
| 95 | 146 |
} |
| 96 | 147 |
|
| 97 | 148 |
// Check the optimalitiy of the flow |
| 98 | 149 |
template < typename Digraph, typename CostMap, |
| 99 | 150 |
typename FlowMap, typename PotentialMap > |
| 100 | 151 |
bool checkOptimality( const Digraph& gr, const CostMap& cost, |
| 101 | 152 |
const FlowMap& flow, const PotentialMap& pi ) |
| 102 | 153 |
{
|
| 103 | 154 |
// Check the "Complementary Slackness" optimality condition |
| 104 | 155 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 105 | 156 |
bool opt = true; |
| 106 | 157 |
for (ArcIt e(gr); e != INVALID; ++e) {
|
| 107 | 158 |
typename CostMap::Value red_cost = |
| 108 | 159 |
cost[e] + pi[gr.source(e)] - pi[gr.target(e)]; |
| 109 | 160 |
opt = (flow[e] == 0 && red_cost >= 0) || |
| 110 | 161 |
(flow[e] == 1 && red_cost <= 0); |
| 111 | 162 |
if (!opt) break; |
| 112 | 163 |
} |
| 113 | 164 |
return opt; |
| 114 | 165 |
} |
| 115 | 166 |
|
| 116 | 167 |
// Check a path |
| 117 | 168 |
template <typename Digraph, typename Path> |
| 118 | 169 |
bool checkPath( const Digraph& gr, const Path& path, |
| 119 | 170 |
typename Digraph::Node s, typename Digraph::Node t) |
| 120 | 171 |
{
|
| 121 |
// Check the "Complementary Slackness" optimality condition |
|
| 122 | 172 |
TEMPLATE_DIGRAPH_TYPEDEFS(Digraph); |
| 123 | 173 |
Node n = s; |
| 124 | 174 |
for (int i = 0; i < path.length(); ++i) {
|
| 125 | 175 |
if (gr.source(path.nth(i)) != n) return false; |
| 126 | 176 |
n = gr.target(path.nth(i)); |
| 127 | 177 |
} |
| 128 | 178 |
return n == t; |
| 129 | 179 |
} |
| 130 | 180 |
|
| 131 | 181 |
|
| 132 | 182 |
int main() |
| 133 | 183 |
{
|
| 134 | 184 |
DIGRAPH_TYPEDEFS(ListDigraph); |
| 135 | 185 |
|
| 136 | 186 |
// Read the test digraph |
| 137 | 187 |
ListDigraph digraph; |
| 138 | 188 |
ListDigraph::ArcMap<int> length(digraph); |
| 139 |
Node |
|
| 189 |
Node s, t; |
|
| 140 | 190 |
|
| 141 | 191 |
std::istringstream input(test_lgf); |
| 142 | 192 |
DigraphReader<ListDigraph>(digraph, input). |
| 143 |
arcMap("cost", length).
|
|
| 144 |
node("source", source).
|
|
| 145 |
|
|
| 193 |
arcMap("length", length).
|
|
| 194 |
node("source", s).
|
|
| 195 |
node("target", t).
|
|
| 146 | 196 |
run(); |
| 147 | 197 |
|
| 148 | 198 |
// Find 2 paths |
| 149 | 199 |
{
|
| 150 |
Suurballe<ListDigraph> suurballe(digraph, length, source, target); |
|
| 151 |
check(suurballe.run(2) == 2, "Wrong number of paths"); |
|
| 152 |
|
|
| 200 |
Suurballe<ListDigraph> suurballe(digraph, length); |
|
| 201 |
check(suurballe.run(s, t) == 2, "Wrong number of paths"); |
|
| 202 |
check(checkFlow(digraph, suurballe.flowMap(), s, t, 2), |
|
| 153 | 203 |
"The flow is not feasible"); |
| 154 | 204 |
check(suurballe.totalLength() == 510, "The flow is not optimal"); |
| 155 | 205 |
check(checkOptimality(digraph, length, suurballe.flowMap(), |
| 156 | 206 |
suurballe.potentialMap()), |
| 157 | 207 |
"Wrong potentials"); |
| 158 | 208 |
for (int i = 0; i < suurballe.pathNum(); ++i) |
| 159 |
check(checkPath(digraph, suurballe.path(i), source, target), |
|
| 160 |
"Wrong path"); |
|
| 209 |
check(checkPath(digraph, suurballe.path(i), s, t), "Wrong path"); |
|
| 161 | 210 |
} |
| 162 | 211 |
|
| 163 | 212 |
// Find 3 paths |
| 164 | 213 |
{
|
| 165 |
Suurballe<ListDigraph> suurballe(digraph, length, source, target); |
|
| 166 |
check(suurballe.run(3) == 3, "Wrong number of paths"); |
|
| 167 |
|
|
| 214 |
Suurballe<ListDigraph> suurballe(digraph, length); |
|
| 215 |
check(suurballe.run(s, t, 3) == 3, "Wrong number of paths"); |
|
| 216 |
check(checkFlow(digraph, suurballe.flowMap(), s, t, 3), |
|
| 168 | 217 |
"The flow is not feasible"); |
| 169 | 218 |
check(suurballe.totalLength() == 1040, "The flow is not optimal"); |
| 170 | 219 |
check(checkOptimality(digraph, length, suurballe.flowMap(), |
| 171 | 220 |
suurballe.potentialMap()), |
| 172 | 221 |
"Wrong potentials"); |
| 173 | 222 |
for (int i = 0; i < suurballe.pathNum(); ++i) |
| 174 |
check(checkPath(digraph, suurballe.path(i), source, target), |
|
| 175 |
"Wrong path"); |
|
| 223 |
check(checkPath(digraph, suurballe.path(i), s, t), "Wrong path"); |
|
| 176 | 224 |
} |
| 177 | 225 |
|
| 178 | 226 |
// Find 5 paths (only 3 can be found) |
| 179 | 227 |
{
|
| 180 |
Suurballe<ListDigraph> suurballe(digraph, length, source, target); |
|
| 181 |
check(suurballe.run(5) == 3, "Wrong number of paths"); |
|
| 182 |
|
|
| 228 |
Suurballe<ListDigraph> suurballe(digraph, length); |
|
| 229 |
check(suurballe.run(s, t, 5) == 3, "Wrong number of paths"); |
|
| 230 |
check(checkFlow(digraph, suurballe.flowMap(), s, t, 3), |
|
| 183 | 231 |
"The flow is not feasible"); |
| 184 | 232 |
check(suurballe.totalLength() == 1040, "The flow is not optimal"); |
| 185 | 233 |
check(checkOptimality(digraph, length, suurballe.flowMap(), |
| 186 | 234 |
suurballe.potentialMap()), |
| 187 | 235 |
"Wrong potentials"); |
| 188 | 236 |
for (int i = 0; i < suurballe.pathNum(); ++i) |
| 189 |
check(checkPath(digraph, suurballe.path(i), source, target), |
|
| 190 |
"Wrong path"); |
|
| 237 |
check(checkPath(digraph, suurballe.path(i), s, t), "Wrong path"); |
|
| 191 | 238 |
} |
| 192 | 239 |
|
| 193 | 240 |
return 0; |
| 194 | 241 |
} |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#ifndef LEMON_TEST_TEST_TOOLS_H |
| 20 | 20 |
#define LEMON_TEST_TEST_TOOLS_H |
| 21 | 21 |
|
| 22 | 22 |
///\ingroup misc |
| 23 | 23 |
///\file |
| 24 | 24 |
///\brief Some utilities to write test programs. |
| 25 | 25 |
|
| 26 | 26 |
#include <iostream> |
| 27 | 27 |
#include <stdlib.h> |
| 28 | 28 |
|
| 29 | 29 |
///If \c rc is fail, writes an error message and exits. |
| 30 | 30 |
|
| 31 | 31 |
///If \c rc is fail, writes an error message and exits. |
| 32 | 32 |
///The error message contains the file name and the line number of the |
| 33 | 33 |
///source code in a standard from, which makes it possible to go there |
| 34 | 34 |
///using good source browsers like e.g. \c emacs. |
| 35 | 35 |
/// |
| 36 | 36 |
///For example |
| 37 | 37 |
///\code check(0==1,"This is obviously false.");\endcode will |
| 38 | 38 |
///print something like this (and then exits). |
| 39 | 39 |
///\verbatim file_name.cc:123: error: This is obviously false. \endverbatim |
| 40 |
#define check(rc, msg) \ |
|
| 41 |
if(!(rc)) { \
|
|
| 42 |
std::cerr << __FILE__ ":" << __LINE__ << ": error: " << msg << std::endl; \ |
|
| 43 |
abort(); \ |
|
| 44 |
|
|
| 40 |
#define check(rc, msg) \ |
|
| 41 |
{ \
|
|
| 42 |
if(!(rc)) { \
|
|
| 43 |
std::cerr << __FILE__ ":" << __LINE__ << ": error: " \ |
|
| 44 |
<< msg << std::endl; \ |
|
| 45 |
abort(); \ |
|
| 46 |
} else { } \
|
|
| 47 |
} \ |
|
| 48 |
|
|
| 45 | 49 |
|
| 46 | 50 |
#endif |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
#include <lemon/time_measure.h> |
| 20 | 20 |
|
| 21 | 21 |
using namespace lemon; |
| 22 | 22 |
|
| 23 | 23 |
void f() |
| 24 | 24 |
{
|
| 25 | 25 |
double d=0; |
| 26 | 26 |
for(int i=0;i<1000;i++) |
| 27 | 27 |
d+=0.1; |
| 28 | 28 |
} |
| 29 | 29 |
|
| 30 | 30 |
void g() |
| 31 | 31 |
{
|
| 32 | 32 |
static Timer T; |
| 33 | 33 |
|
| 34 | 34 |
for(int i=0;i<1000;i++) |
| 35 | 35 |
TimeStamp x(T); |
| 36 | 36 |
} |
| 37 | 37 |
|
| 38 | 38 |
int main() |
| 39 | 39 |
{
|
| 40 | 40 |
Timer T; |
| 41 | 41 |
unsigned int n; |
| 42 |
for(n=0;T.realTime()< |
|
| 42 |
for(n=0;T.realTime()<0.1;n++) ; |
|
| 43 | 43 |
std::cout << T << " (" << n << " time queries)\n";
|
| 44 |
T.restart(); |
|
| 45 |
while(T.realTime()<2.0) ; |
|
| 46 |
|
|
| 44 |
|
|
| 47 | 45 |
TimeStamp full; |
| 48 | 46 |
TimeStamp t; |
| 49 |
t=runningTimeTest(f,1,&n,&full); |
|
| 47 |
t=runningTimeTest(f,0.1,&n,&full); |
|
| 50 | 48 |
std::cout << t << " (" << n << " tests)\n";
|
| 51 | 49 |
std::cout << "Total: " << full << "\n"; |
| 52 | 50 |
|
| 53 |
t=runningTimeTest(g,1,&n,&full); |
|
| 51 |
t=runningTimeTest(g,0.1,&n,&full); |
|
| 54 | 52 |
std::cout << t << " (" << n << " tests)\n";
|
| 55 | 53 |
std::cout << "Total: " << full << "\n"; |
| 56 | 54 |
|
| 57 | 55 |
return 0; |
| 58 | 56 |
} |
| 1 |
EXTRA_DIST += \ |
|
| 2 |
tools/CMakeLists.txt |
|
| 3 |
|
|
| 1 | 4 |
if WANT_TOOLS |
| 2 | 5 |
|
| 3 | 6 |
bin_PROGRAMS += \ |
| 4 |
tools/dimacs- |
|
| 7 |
tools/dimacs-solver \ |
|
| 8 |
tools/dimacs-to-lgf \ |
|
| 9 |
tools/lgf-gen |
|
| 5 | 10 |
|
| 6 | 11 |
dist_bin_SCRIPTS += tools/lemon-0.x-to-1.x.sh |
| 7 | 12 |
|
| 8 | 13 |
endif WANT_TOOLS |
| 9 | 14 |
|
| 15 |
tools_dimacs_solver_SOURCES = tools/dimacs-solver.cc |
|
| 10 | 16 |
tools_dimacs_to_lgf_SOURCES = tools/dimacs-to-lgf.cc |
| 17 |
tools_lgf_gen_SOURCES = tools/lgf-gen.cc |
| 1 | 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
| 2 | 2 |
* |
| 3 | 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
| 4 | 4 |
* |
| 5 | 5 |
* Copyright (C) 2003-2009 |
| 6 | 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
| 7 | 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
| 8 | 8 |
* |
| 9 | 9 |
* Permission to use, modify and distribute this software is granted |
| 10 | 10 |
* provided that this copyright notice appears in all copies. For |
| 11 | 11 |
* precise terms see the accompanying LICENSE file. |
| 12 | 12 |
* |
| 13 | 13 |
* This software is provided "AS IS" with no warranty of any kind, |
| 14 | 14 |
* express or implied, and with no claim as to its suitability for any |
| 15 | 15 |
* purpose. |
| 16 | 16 |
* |
| 17 | 17 |
*/ |
| 18 | 18 |
|
| 19 | 19 |
///\ingroup tools |
| 20 | 20 |
///\file |
| 21 | 21 |
///\brief DIMACS to LGF converter. |
| 22 | 22 |
/// |
| 23 | 23 |
/// This program converts various DIMACS formats to the LEMON Digraph Format |
| 24 | 24 |
/// (LGF). |
| 25 | 25 |
/// |
| 26 | 26 |
/// See |
| 27 |
/// \verbatim |
|
| 28 |
/// dimacs-to-lgf --help |
|
| 29 |
/// \endverbatim |
|
| 30 |
/// for more info on usage. |
|
| 31 |
/// |
|
| 27 |
/// \code |
|
| 28 |
/// dimacs-to-lgf --help |
|
| 29 |
/// \endcode |
|
| 30 |
/// for more info on the usage. |
|
| 32 | 31 |
|
| 33 | 32 |
#include <iostream> |
| 34 | 33 |
#include <fstream> |
| 35 | 34 |
#include <cstring> |
| 36 | 35 |
|
| 37 | 36 |
#include <lemon/smart_graph.h> |
| 38 | 37 |
#include <lemon/dimacs.h> |
| 39 | 38 |
#include <lemon/lgf_writer.h> |
| 40 | 39 |
|
| 41 | 40 |
#include <lemon/arg_parser.h> |
| 42 | 41 |
#include <lemon/error.h> |
| 43 | 42 |
|
| 44 | 43 |
using namespace std; |
| 45 | 44 |
using namespace lemon; |
| 46 | 45 |
|
| 47 | 46 |
|
| 48 | 47 |
int main(int argc, const char *argv[]) {
|
| 49 | 48 |
typedef SmartDigraph Digraph; |
| 50 | 49 |
|
| 51 | 50 |
typedef Digraph::Arc Arc; |
| 52 | 51 |
typedef Digraph::Node Node; |
| 53 | 52 |
typedef Digraph::ArcIt ArcIt; |
| 54 | 53 |
typedef Digraph::NodeIt NodeIt; |
| 55 | 54 |
typedef Digraph::ArcMap<double> DoubleArcMap; |
| 56 | 55 |
typedef Digraph::NodeMap<double> DoubleNodeMap; |
| 57 | 56 |
|
| 58 | 57 |
std::string inputName; |
| 59 | 58 |
std::string outputName; |
| 60 | 59 |
|
| 61 | 60 |
ArgParser ap(argc, argv); |
| 62 | 61 |
ap.other("[INFILE [OUTFILE]]",
|
| 63 | 62 |
"If either the INFILE or OUTFILE file is missing the standard\n" |
| 64 | 63 |
" input/output will be used instead.") |
| 65 | 64 |
.run(); |
| 66 | 65 |
|
| 67 | 66 |
ifstream input; |
| 68 | 67 |
ofstream output; |
| 69 | 68 |
|
| 70 | 69 |
switch(ap.files().size()) |
| 71 | 70 |
{
|
| 72 | 71 |
case 2: |
| 73 | 72 |
output.open(ap.files()[1].c_str()); |
| 74 | 73 |
if (!output) {
|
| 75 | 74 |
throw IoError("Cannot open the file for writing", ap.files()[1]);
|
| 76 | 75 |
} |
| 77 | 76 |
case 1: |
| 78 | 77 |
input.open(ap.files()[0].c_str()); |
| 79 | 78 |
if (!input) {
|
| 80 | 79 |
throw IoError("File cannot be found", ap.files()[0]);
|
| 81 | 80 |
} |
| 82 | 81 |
case 0: |
| 83 | 82 |
break; |
| 84 | 83 |
default: |
| 85 | 84 |
cerr << ap.commandName() << ": too many arguments\n"; |
| 86 | 85 |
return 1; |
| 87 | 86 |
} |
| 88 | 87 |
istream& is = (ap.files().size()<1 ? cin : input); |
| 89 | 88 |
ostream& os = (ap.files().size()<2 ? cout : output); |
| 90 | 89 |
|
| 91 | 90 |
DimacsDescriptor desc = dimacsType(is); |
| 92 | 91 |
switch(desc.type) |
| 93 | 92 |
{
|
| 94 | 93 |
case DimacsDescriptor::MIN: |
| 95 | 94 |
{
|
| 96 | 95 |
Digraph digraph; |
| 97 | 96 |
DoubleArcMap lower(digraph), capacity(digraph), cost(digraph); |
| 98 | 97 |
DoubleNodeMap supply(digraph); |
| 99 |
readDimacsMin(is, digraph, lower, capacity, cost, supply, desc); |
|
| 98 |
readDimacsMin(is, digraph, lower, capacity, cost, supply, 0, desc); |
|
| 100 | 99 |
DigraphWriter<Digraph>(digraph, os). |
| 101 | 100 |
nodeMap("supply", supply).
|
| 102 | 101 |
arcMap("lower", lower).
|
| 103 | 102 |
arcMap("capacity", capacity).
|
| 104 | 103 |
arcMap("cost", cost).
|
| 105 | 104 |
attribute("problem","min").
|
| 106 | 105 |
run(); |
| 107 | 106 |
} |
| 108 | 107 |
break; |
| 109 | 108 |
case DimacsDescriptor::MAX: |
| 110 | 109 |
{
|
| 111 | 110 |
Digraph digraph; |
| 112 | 111 |
Node s, t; |
| 113 | 112 |
DoubleArcMap capacity(digraph); |
| 114 |
readDimacsMax(is, digraph, capacity, s, t, desc); |
|
| 113 |
readDimacsMax(is, digraph, capacity, s, t, 0, desc); |
|
| 115 | 114 |
DigraphWriter<Digraph>(digraph, os). |
| 116 | 115 |
arcMap("capacity", capacity).
|
| 117 | 116 |
node("source", s).
|
| 118 | 117 |
node("target", t).
|
| 119 | 118 |
attribute("problem","max").
|
| 120 | 119 |
run(); |
| 121 | 120 |
} |
| 122 | 121 |
break; |
| 123 | 122 |
case DimacsDescriptor::SP: |
| 124 | 123 |
{
|
| 125 | 124 |
Digraph digraph; |
| 126 | 125 |
Node s; |
| 127 | 126 |
DoubleArcMap capacity(digraph); |
| 128 | 127 |
readDimacsSp(is, digraph, capacity, s, desc); |
| 129 | 128 |
DigraphWriter<Digraph>(digraph, os). |
| 130 | 129 |
arcMap("capacity", capacity).
|
| 131 | 130 |
node("source", s).
|
| 132 | 131 |
attribute("problem","sp").
|
| 133 | 132 |
run(); |
| 134 | 133 |
} |
| 135 | 134 |
break; |
| 136 | 135 |
case DimacsDescriptor::MAT: |
| 137 | 136 |
{
|
| 138 | 137 |
Digraph digraph; |
| 139 | 138 |
readDimacsMat(is, digraph,desc); |
| 140 | 139 |
DigraphWriter<Digraph>(digraph, os). |
| 141 | 140 |
attribute("problem","mat").
|
| 142 | 141 |
run(); |
| 143 | 142 |
} |
| 144 | 143 |
break; |
| 145 | 144 |
default: |
| 146 | 145 |
break; |
| 147 | 146 |
} |
| 148 | 147 |
return 0; |
| 149 | 148 |
} |
| 1 | 1 |
#!/bin/bash |
| 2 | 2 |
|
| 3 | 3 |
set -e |
| 4 | 4 |
|
| 5 | 5 |
if [ $# -eq 0 -o x$1 = "x-h" -o x$1 = "x-help" -o x$1 = "x--help" ]; then |
| 6 | 6 |
echo "Usage:" |
| 7 | 7 |
echo " $0 source-file(s)" |
| 8 | 8 |
exit |
| 9 | 9 |
fi |
| 10 | 10 |
|
| 11 | 11 |
for i in $@ |
| 12 | 12 |
do |
| 13 | 13 |
echo Update $i... |
| 14 | 14 |
TMP=`mktemp` |
| 15 | 15 |
sed -e "s/\<undirected graph\>/_gr_aph_label_/g"\ |
| 16 | 16 |
-e "s/\<undirected graphs\>/_gr_aph_label_s/g"\ |
| 17 | 17 |
-e "s/\<undirected edge\>/_ed_ge_label_/g"\ |
| 18 | 18 |
-e "s/\<undirected edges\>/_ed_ge_label_s/g"\ |
| 19 | 19 |
-e "s/\<directed graph\>/_digr_aph_label_/g"\ |
| 20 | 20 |
-e "s/\<directed graphs\>/_digr_aph_label_s/g"\ |
| 21 | 21 |
-e "s/\<directed edge\>/_ar_c_label_/g"\ |
| 22 | 22 |
-e "s/\<directed edges\>/_ar_c_label_s/g"\ |
| 23 | 23 |
-e "s/UGraph/_Gr_aph_label_/g"\ |
| 24 | 24 |
-e "s/u[Gg]raph/_gr_aph_label_/g"\ |
| 25 |
-e "s/ |
|
| 25 |
-e "s/Graph\>/_Digr_aph_label_/g"\ |
|
| 26 | 26 |
-e "s/\<graph\>/_digr_aph_label_/g"\ |
| 27 |
-e "s/ |
|
| 27 |
-e "s/Graphs\>/_Digr_aph_label_s/g"\ |
|
| 28 | 28 |
-e "s/\<graphs\>/_digr_aph_label_s/g"\ |
| 29 |
-e "s/_Graph/__Gr_aph_label_/g"\ |
|
| 30 |
-e "s/\([Gg]\)raph\([a-z_]\)/_\1r_aph_label_\2/g"\ |
|
| 29 |
-e "s/\([Gg]\)raph\([a-z]\)/_\1r_aph_label_\2/g"\ |
|
| 31 | 30 |
-e "s/\([a-z_]\)graph/\1_gr_aph_label_/g"\ |
| 32 | 31 |
-e "s/Graph/_Digr_aph_label_/g"\ |
| 33 | 32 |
-e "s/graph/_digr_aph_label_/g"\ |
| 34 | 33 |
-e "s/UEdge/_Ed_ge_label_/g"\ |
| 35 | 34 |
-e "s/u[Ee]dge/_ed_ge_label_/g"\ |
| 36 | 35 |
-e "s/IncEdgeIt/_In_cEd_geIt_label_/g"\ |
| 37 |
-e "s/ |
|
| 36 |
-e "s/Edge\>/_Ar_c_label_/g"\ |
|
| 38 | 37 |
-e "s/\<edge\>/_ar_c_label_/g"\ |
| 39 |
-e "s/ |
|
| 38 |
-e "s/_edge\>/__ar_c_label_/g"\ |
|
| 39 |
-e "s/Edges\>/_Ar_c_label_s/g"\ |
|
| 40 | 40 |
-e "s/\<edges\>/_ar_c_label_s/g"\ |
| 41 |
-e "s/_Edge/__Ed_ge_label_/g"\ |
|
| 42 |
-e "s/Edge\([a-z_]\)/_Ed_ge_label_\1/g"\ |
|
| 43 |
-e "s/edge\([a-z_]\)/_ed_ge_label_\1/g"\ |
|
| 44 |
-e "s/\([a-z_]\)edge/\1_ed_ge_label_/g"\ |
|
| 41 |
-e "s/_edges\>/__ar_c_label_s/g"\ |
|
| 42 |
-e "s/\([Ee]\)dge\([a-z]\)/_\1d_ge_label_\2/g"\ |
|
| 43 |
-e "s/\([a-z]\)edge/\1_ed_ge_label_/g"\ |
|
| 45 | 44 |
-e "s/Edge/_Ar_c_label_/g"\ |
| 46 | 45 |
-e "s/edge/_ar_c_label_/g"\ |
| 47 | 46 |
-e "s/A[Nn]ode/_Re_d_label_/g"\ |
| 48 | 47 |
-e "s/B[Nn]ode/_Blu_e_label_/g"\ |
| 49 | 48 |
-e "s/A-[Nn]ode/_Re_d_label_/g"\ |
| 50 | 49 |
-e "s/B-[Nn]ode/_Blu_e_label_/g"\ |
| 51 | 50 |
-e "s/a[Nn]ode/_re_d_label_/g"\ |
| 52 | 51 |
-e "s/b[Nn]ode/_blu_e_label_/g"\ |
| 53 | 52 |
-e "s/\<UGRAPH_TYPEDEFS\([ \t]*([ \t]*\)typename[ \t]/TEMPLATE__GR_APH_TY_PEDE_FS_label_\1/g"\ |
| 54 | 53 |
-e "s/\<GRAPH_TYPEDEFS\([ \t]*([ \t]*\)typename[ \t]/TEMPLATE__DIGR_APH_TY_PEDE_FS_label_\1/g"\ |
| 55 | 54 |
-e "s/\<UGRAPH_TYPEDEFS\>/_GR_APH_TY_PEDE_FS_label_/g"\ |
| 56 | 55 |
-e "s/\<GRAPH_TYPEDEFS\>/_DIGR_APH_TY_PEDE_FS_label_/g"\ |
| 57 | 56 |
-e "s/_Digr_aph_label_/Digraph/g"\ |
| 58 | 57 |
-e "s/_digr_aph_label_/digraph/g"\ |
| 59 | 58 |
-e "s/_Gr_aph_label_/Graph/g"\ |
| 60 | 59 |
-e "s/_gr_aph_label_/graph/g"\ |
| 61 | 60 |
-e "s/_Ar_c_label_/Arc/g"\ |
| 62 | 61 |
-e "s/_ar_c_label_/arc/g"\ |
| 63 | 62 |
-e "s/_Ed_ge_label_/Edge/g"\ |
| 64 | 63 |
-e "s/_ed_ge_label_/edge/g"\ |
| 65 | 64 |
-e "s/_In_cEd_geIt_label_/IncEdgeIt/g"\ |
| 66 | 65 |
-e "s/_Re_d_label_/Red/g"\ |
| 67 | 66 |
-e "s/_Blu_e_label_/Blue/g"\ |
| 68 | 67 |
-e "s/_re_d_label_/red/g"\ |
| 69 | 68 |
-e "s/_blu_e_label_/blue/g"\ |
| 70 | 69 |
-e "s/_GR_APH_TY_PEDE_FS_label_/GRAPH_TYPEDEFS/g"\ |
| 71 | 70 |
-e "s/_DIGR_APH_TY_PEDE_FS_label_/DIGRAPH_TYPEDEFS/g"\ |
| 71 |
-e "s/\<digraph_adaptor\.h\>/adaptors.h/g"\ |
|
| 72 |
-e "s/\<digraph_utils\.h\>/core.h/g"\ |
|
| 73 |
-e "s/\<digraph_reader\.h\>/lgf_reader.h/g"\ |
|
| 74 |
-e "s/\<digraph_writer\.h\>/lgf_writer.h/g"\ |
|
| 75 |
-e "s/\<topology\.h\>/connectivity.h/g"\ |
|
| 72 | 76 |
-e "s/DigraphToEps/GraphToEps/g"\ |
| 73 | 77 |
-e "s/digraphToEps/graphToEps/g"\ |
| 74 | 78 |
-e "s/\<DefPredMap\>/SetPredMap/g"\ |
| 75 | 79 |
-e "s/\<DefDistMap\>/SetDistMap/g"\ |
| 76 | 80 |
-e "s/\<DefReachedMap\>/SetReachedMap/g"\ |
| 77 | 81 |
-e "s/\<DefProcessedMap\>/SetProcessedMap/g"\ |
| 78 | 82 |
-e "s/\<DefHeap\>/SetHeap/g"\ |
| 79 | 83 |
-e "s/\<DefStandardHeap\>/SetStandradHeap/g"\ |
| 80 | 84 |
-e "s/\<DefOperationTraits\>/SetOperationTraits/g"\ |
| 81 | 85 |
-e "s/\<DefProcessedMapToBeDefaultMap\>/SetStandardProcessedMap/g"\ |
| 82 | 86 |
-e "s/\<copyGraph\>/graphCopy/g"\ |
| 83 | 87 |
-e "s/\<copyDigraph\>/digraphCopy/g"\ |
| 84 | 88 |
-e "s/\<HyperCubeDigraph\>/HypercubeGraph/g"\ |
| 85 | 89 |
-e "s/\<IntegerMap\>/RangeMap/g"\ |
| 86 | 90 |
-e "s/\<integerMap\>/rangeMap/g"\ |
| 87 | 91 |
-e "s/\<\([sS]\)tdMap\>/\1parseMap/g"\ |
| 88 | 92 |
-e "s/\<\([Ff]\)unctorMap\>/\1unctorToMap/g"\ |
| 89 | 93 |
-e "s/\<\([Mm]\)apFunctor\>/\1apToFunctor/g"\ |
| 90 | 94 |
-e "s/\<\([Ff]\)orkWriteMap\>/\1orkMap/g"\ |
| 91 | 95 |
-e "s/\<StoreBoolMap\>/LoggerBoolMap/g"\ |
| 92 | 96 |
-e "s/\<storeBoolMap\>/loggerBoolMap/g"\ |
| 97 |
-e "s/\<InvertableMap\>/CrossRefMap/g"\ |
|
| 98 |
-e "s/\<invertableMap\>/crossRefMap/g"\ |
|
| 99 |
-e "s/\<DescriptorMap\>/RangeIdMap/g"\ |
|
| 100 |
-e "s/\<descriptorMap\>/rangeIdMap/g"\ |
|
| 93 | 101 |
-e "s/\<BoundingBox\>/Box/g"\ |
| 94 | 102 |
-e "s/\<readNauty\>/readNautyGraph/g"\ |
| 95 | 103 |
-e "s/\<RevDigraphAdaptor\>/ReverseDigraph/g"\ |
| 96 | 104 |
-e "s/\<revDigraphAdaptor\>/reverseDigraph/g"\ |
| 97 | 105 |
-e "s/\<SubDigraphAdaptor\>/SubDigraph/g"\ |
| 98 | 106 |
-e "s/\<subDigraphAdaptor\>/subDigraph/g"\ |
| 99 | 107 |
-e "s/\<SubGraphAdaptor\>/SubGraph/g"\ |
| 100 | 108 |
-e "s/\<subGraphAdaptor\>/subGraph/g"\ |
| 101 | 109 |
-e "s/\<NodeSubDigraphAdaptor\>/FilterNodes/g"\ |
| 102 | 110 |
-e "s/\<nodeSubDigraphAdaptor\>/filterNodes/g"\ |
| 103 | 111 |
-e "s/\<ArcSubDigraphAdaptor\>/FilterArcs/g"\ |
| 104 | 112 |
-e "s/\<arcSubDigraphAdaptor\>/filterArcs/g"\ |
| 105 | 113 |
-e "s/\<UndirDigraphAdaptor\>/Undirector/g"\ |
| 106 | 114 |
-e "s/\<undirDigraphAdaptor\>/undirector/g"\ |
| 107 | 115 |
-e "s/\<ResDigraphAdaptor\>/ResidualDigraph/g"\ |
| 108 | 116 |
-e "s/\<resDigraphAdaptor\>/residualDigraph/g"\ |
| 109 | 117 |
-e "s/\<SplitDigraphAdaptor\>/SplitNodes/g"\ |
| 110 | 118 |
-e "s/\<splitDigraphAdaptor\>/splitNodes/g"\ |
| 111 | 119 |
-e "s/\<SubGraphAdaptor\>/SubGraph/g"\ |
| 112 | 120 |
-e "s/\<subGraphAdaptor\>/subGraph/g"\ |
| 113 | 121 |
-e "s/\<NodeSubGraphAdaptor\>/FilterNodes/g"\ |
| 114 | 122 |
-e "s/\<nodeSubGraphAdaptor\>/filterNodes/g"\ |
| 115 | 123 |
-e "s/\<ArcSubGraphAdaptor\>/FilterEdges/g"\ |
| 116 | 124 |
-e "s/\<arcSubGraphAdaptor\>/filterEdges/g"\ |
| 117 | 125 |
-e "s/\<DirGraphAdaptor\>/Orienter/g"\ |
| 118 | 126 |
-e "s/\<dirGraphAdaptor\>/orienter/g"\ |
| 127 |
-e "s/\<LpCplex\>/CplexLp/g"\ |
|
| 128 |
-e "s/\<MipCplex\>/CplexMip/g"\ |
|
| 129 |
-e "s/\<LpGlpk\>/GlpkLp/g"\ |
|
| 130 |
-e "s/\<MipGlpk\>/GlpkMip/g"\ |
|
| 131 |
-e "s/\<LpSoplex\>/SoplexLp/g"\ |
|
| 119 | 132 |
<$i > $TMP |
| 120 | 133 |
mv $TMP $i |
| 121 | 134 |
done |
| 1 |
/* -*- mode: C++; indent-tabs-mode: nil; -*- |
|
| 2 |
* |
|
| 3 |
* This file is a part of LEMON, a generic C++ optimization library. |
|
| 4 |
* |
|
| 5 |
* Copyright (C) 2003-2009 |
|
| 6 |
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
|
| 7 |
* (Egervary Research Group on Combinatorial Optimization, EGRES). |
|
| 8 |
* |
|
| 9 |
* Permission to use, modify and distribute this software is granted |
|
| 10 |
* provided that this copyright notice appears in all copies. For |
|
| 11 |
* precise terms see the accompanying LICENSE file. |
|
| 12 |
* |
|
| 13 |
* This software is provided "AS IS" with no warranty of any kind, |
|
| 14 |
* express or implied, and with no claim as to its suitability for any |
|
| 15 |
* purpose. |
|
| 16 |
* |
|
| 17 |
*/ |
|
| 18 |
|
|
| 19 |
#ifndef LEMON_BITS_BASE_EXTENDER_H |
|
| 20 |
#define LEMON_BITS_BASE_EXTENDER_H |
|
| 21 |
|
|
| 22 |
#include <lemon/core.h> |
|
| 23 |
#include <lemon/error.h> |
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| 25 |
#include <lemon/bits/map_extender.h> |
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#include <lemon/bits/default_map.h> |
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#include <lemon/concept_check.h> |
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#include <lemon/concepts/maps.h> |
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//\ingroup digraphbits |
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//\file |
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//\brief Extenders for the graph types |
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namespace lemon {
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// \ingroup digraphbits |
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// |
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// \brief BaseDigraph to BaseGraph extender |
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template <typename Base> |
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class UndirDigraphExtender : public Base {
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public: |
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typedef Base Parent; |
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typedef typename Parent::Arc Edge; |
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typedef typename Parent::Node Node; |
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typedef True UndirectedTag; |
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class Arc : public Edge {
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friend class UndirDigraphExtender; |
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protected: |
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bool forward; |
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Arc(const Edge &ue, bool _forward) : |
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Edge(ue), forward(_forward) {}
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public: |
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Arc() {}
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// Invalid arc constructor |
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Arc(Invalid i) : Edge(i), forward(true) {}
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bool operator==(const Arc &that) const {
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return forward==that.forward && Edge(*this)==Edge(that); |
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} |
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bool operator!=(const Arc &that) const {
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return forward!=that.forward || Edge(*this)!=Edge(that); |
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} |
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bool operator<(const Arc &that) const {
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return forward<that.forward || |
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(!(that.forward<forward) && Edge(*this)<Edge(that)); |
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} |
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}; |
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// First node of the edge |
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Node u(const Edge &e) const {
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return Parent::source(e); |
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} |
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// Source of the given arc |
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Node source(const Arc &e) const {
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return e.forward ? Parent::source(e) : Parent::target(e); |
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} |
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// Second node of the edge |
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Node v(const Edge &e) const {
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return Parent::target(e); |
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} |
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// Target of the given arc |
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Node target(const Arc &e) const {
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return e.forward ? Parent::target(e) : Parent::source(e); |
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} |
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// \brief Directed arc from an edge. |
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// |
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// Returns a directed arc corresponding to the specified edge. |
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// If the given bool is true, the first node of the given edge and |
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// the source node of the returned arc are the same. |
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static Arc direct(const Edge &e, bool d) {
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return Arc(e, d); |
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} |
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// Returns whether the given directed arc has the same orientation |
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// as the corresponding edge. |
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static bool direction(const Arc &a) { return a.forward; }
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using Parent::first; |
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using Parent::next; |
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void first(Arc &e) const {
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Parent::first(e); |
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e.forward=true; |
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} |
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void next(Arc &e) const {
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if( e.forward ) {
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e.forward = false; |
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} |
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else {
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Parent::next(e); |
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e.forward = true; |
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} |
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} |
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void firstOut(Arc &e, const Node &n) const {
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Parent::firstIn(e,n); |
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if( Edge(e) != INVALID ) {
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e.forward = false; |
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} |
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else {
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Parent::firstOut(e,n); |
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e.forward = true; |
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} |
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} |
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void nextOut(Arc &e) const {
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if( ! e.forward ) {
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Node n = Parent::target(e); |
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Parent::nextIn(e); |
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if( Edge(e) == INVALID ) {
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Parent::firstOut(e, n); |
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e.forward = true; |
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} |
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} |
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else {
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Parent::nextOut(e); |
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} |
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} |
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void firstIn(Arc &e, const Node &n) const {
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Parent::firstOut(e,n); |
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if( Edge(e) != INVALID ) {
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e.forward = false; |
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} |
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else {
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Parent::firstIn(e,n); |
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e.forward = true; |
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} |
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} |
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void nextIn(Arc &e) const {
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if( ! e.forward ) {
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Node n = Parent::source(e); |
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Parent::nextOut(e); |
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if( Edge(e) == INVALID ) {
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Parent::firstIn(e, n); |
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e.forward = true; |
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} |
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} |
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else {
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Parent::nextIn(e); |
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} |
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} |
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void firstInc(Edge &e, bool &d, const Node &n) const {
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d = true; |
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Parent::firstOut(e, n); |
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if (e != INVALID) return; |
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d = false; |
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Parent::firstIn(e, n); |
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} |
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void nextInc(Edge &e, bool &d) const {
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if (d) {
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Node s = Parent::source(e); |
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Parent::nextOut(e); |
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if (e != INVALID) return; |
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d = false; |
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Parent::firstIn(e, s); |
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} else {
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Parent::nextIn(e); |
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} |
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} |
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Node nodeFromId(int ix) const {
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return Parent::nodeFromId(ix); |
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} |
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Arc arcFromId(int ix) const {
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return direct(Parent::arcFromId(ix >> 1), bool(ix & 1)); |
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} |
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Edge edgeFromId(int ix) const {
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return Parent::arcFromId(ix); |
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} |
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int id(const Node &n) const {
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return Parent::id(n); |
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} |
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int id(const Edge &e) const {
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return Parent::id(e); |
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} |
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int id(const Arc &e) const {
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return 2 * Parent::id(e) + int(e.forward); |
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} |
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int maxNodeId() const {
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return Parent::maxNodeId(); |
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} |
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int maxArcId() const {
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return 2 * Parent::maxArcId() + 1; |
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} |
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int maxEdgeId() const {
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return Parent::maxArcId(); |
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} |
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int arcNum() const {
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return 2 * Parent::arcNum(); |
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} |
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int edgeNum() const {
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return Parent::arcNum(); |
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} |
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Arc findArc(Node s, Node t, Arc p = INVALID) const {
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if (p == INVALID) {
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Edge arc = Parent::findArc(s, t); |
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if (arc != INVALID) return direct(arc, true); |
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arc = Parent::findArc(t, s); |
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if (arc != INVALID) return direct(arc, false); |
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} else if (direction(p)) {
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Edge arc = Parent::findArc(s, t, p); |
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if (arc != INVALID) return direct(arc, true); |
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arc = Parent::findArc(t, s); |
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if (arc != INVALID) return direct(arc, false); |
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} else {
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Edge arc = Parent::findArc(t, s, p); |
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if (arc != INVALID) return direct(arc, false); |
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} |
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return INVALID; |
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} |
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Edge findEdge(Node s, Node t, Edge p = INVALID) const {
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if (s != t) {
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if (p == INVALID) {
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Edge arc = Parent::findArc(s, t); |
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if (arc != INVALID) return arc; |
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arc = Parent::findArc(t, s); |
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if (arc != INVALID) return arc; |
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} else if (Parent::s(p) == s) {
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Edge arc = Parent::findArc(s, t, p); |
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if (arc != INVALID) return arc; |
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arc = Parent::findArc(t, s); |
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if (arc != INVALID) return arc; |
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} else {
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Edge arc = Parent::findArc(t, s, p); |
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if (arc != INVALID) return arc; |
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} |
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} else {
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| 275 |
return Parent::findArc(s, t, p); |
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} |
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return INVALID; |
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} |
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}; |
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| 280 |
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| 281 |
template <typename Base> |
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| 282 |
class BidirBpGraphExtender : public Base {
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| 283 |
public: |
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| 284 |
typedef Base Parent; |
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| 285 |
typedef BidirBpGraphExtender Digraph; |
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| 286 |
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| 287 |
typedef typename Parent::Node Node; |
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| 288 |
typedef typename Parent::Edge Edge; |
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| 289 |
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| 290 |
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| 291 |
using Parent::first; |
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| 292 |
using Parent::next; |
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| 293 |
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| 294 |
using Parent::id; |
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| 295 |
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| 296 |
class Red : public Node {
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| 297 |
friend class BidirBpGraphExtender; |
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| 298 |
public: |
|
| 299 |
Red() {}
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| 300 |
Red(const Node& node) : Node(node) {
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| 301 |
LEMON_DEBUG(Parent::red(node) || node == INVALID, |
|
| 302 |
typename Parent::NodeSetError()); |
|
| 303 |
} |
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| 304 |
Red& operator=(const Node& node) {
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| 305 |
LEMON_DEBUG(Parent::red(node) || node == INVALID, |
|
| 306 |
typename Parent::NodeSetError()); |
|
| 307 |
Node::operator=(node); |
|
| 308 |
return *this; |
|
| 309 |
} |
|
| 310 |
Red(Invalid) : Node(INVALID) {}
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|
| 311 |
Red& operator=(Invalid) {
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|
| 312 |
Node::operator=(INVALID); |
|
| 313 |
return *this; |
|
| 314 |
} |
|
| 315 |
}; |
|
| 316 |
|
|
| 317 |
void first(Red& node) const {
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|
| 318 |
Parent::firstRed(static_cast<Node&>(node)); |
|
| 319 |
} |
|
| 320 |
void next(Red& node) const {
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|
| 321 |
Parent::nextRed(static_cast<Node&>(node)); |
|
| 322 |
} |
|
| 323 |
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| 324 |
int id(const Red& node) const {
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| 325 |
return Parent::redId(node); |
|
| 326 |
} |
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| 327 |
|
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| 328 |
class Blue : public Node {
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|
| 329 |
friend class BidirBpGraphExtender; |
|
| 330 |
public: |
|
| 331 |
Blue() {}
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|
| 332 |
Blue(const Node& node) : Node(node) {
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|
| 333 |
LEMON_DEBUG(Parent::blue(node) || node == INVALID, |
|
| 334 |
typename Parent::NodeSetError()); |
|
| 335 |
} |
|
| 336 |
Blue& operator=(const Node& node) {
|
|
| 337 |
LEMON_DEBUG(Parent::blue(node) || node == INVALID, |
|
| 338 |
typename Parent::NodeSetError()); |
|
| 339 |
Node::operator=(node); |
|
| 340 |
return *this; |
|
| 341 |
} |
|
| 342 |
Blue(Invalid) : Node(INVALID) {}
|
|
| 343 |
Blue& operator=(Invalid) {
|
|
| 344 |
Node::operator=(INVALID); |
|
| 345 |
return *this; |
|
| 346 |
} |
|
| 347 |
}; |
|
| 348 |
|
|
| 349 |
void first(Blue& node) const {
|
|
| 350 |
Parent::firstBlue(static_cast<Node&>(node)); |
|
| 351 |
} |
|
| 352 |
void next(Blue& node) const {
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|
| 353 |
Parent::nextBlue(static_cast<Node&>(node)); |
|
| 354 |
} |
|
| 355 |
|
|
| 356 |
int id(const Blue& node) const {
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|
| 357 |
return Parent::redId(node); |
|
| 358 |
} |
|
| 359 |
|
|
| 360 |
Node source(const Edge& arc) const {
|
|
| 361 |
return red(arc); |
|
| 362 |
} |
|
| 363 |
Node target(const Edge& arc) const {
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|
| 364 |
return blue(arc); |
|
| 365 |
} |
|
| 366 |
|
|
| 367 |
void firstInc(Edge& arc, bool& dir, const Node& node) const {
|
|
| 368 |
if (Parent::red(node)) {
|
|
| 369 |
Parent::firstFromRed(arc, node); |
|
| 370 |
dir = true; |
|
| 371 |
} else {
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|
| 372 |
Parent::firstFromBlue(arc, node); |
|
| 373 |
dir = static_cast<Edge&>(arc) == INVALID; |
|
| 374 |
} |
|
| 375 |
} |
|
| 376 |
void nextInc(Edge& arc, bool& dir) const {
|
|
| 377 |
if (dir) {
|
|
| 378 |
Parent::nextFromRed(arc); |
|
| 379 |
} else {
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|
| 380 |
Parent::nextFromBlue(arc); |
|
| 381 |
if (arc == INVALID) dir = true; |
|
| 382 |
} |
|
| 383 |
} |
|
| 384 |
|
|
| 385 |
class Arc : public Edge {
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|
| 386 |
friend class BidirBpGraphExtender; |
|
| 387 |
protected: |
|
| 388 |
bool forward; |
|
| 389 |
|
|
| 390 |
Arc(const Edge& arc, bool _forward) |
|
| 391 |
: Edge(arc), forward(_forward) {}
|
|
| 392 |
|
|
| 393 |
public: |
|
| 394 |
Arc() {}
|
|
| 395 |
Arc (Invalid) : Edge(INVALID), forward(true) {}
|
|
| 396 |
bool operator==(const Arc& i) const {
|
|
| 397 |
return Edge::operator==(i) && forward == i.forward; |
|
| 398 |
} |
|
| 399 |
bool operator!=(const Arc& i) const {
|
|
| 400 |
return Edge::operator!=(i) || forward != i.forward; |
|
| 401 |
} |
|
| 402 |
bool operator<(const Arc& i) const {
|
|
| 403 |
return Edge::operator<(i) || |
|
| 404 |
(!(i.forward<forward) && Edge(*this)<Edge(i)); |
|
| 405 |
} |
|
| 406 |
}; |
|
| 407 |
|
|
| 408 |
void first(Arc& arc) const {
|
|
| 409 |
Parent::first(static_cast<Edge&>(arc)); |
|
| 410 |
arc.forward = true; |
|
| 411 |
} |
|
| 412 |
|
|
| 413 |
void next(Arc& arc) const {
|
|
| 414 |
if (!arc.forward) {
|
|
| 415 |
Parent::next(static_cast<Edge&>(arc)); |
|
| 416 |
} |
|
| 417 |
arc.forward = !arc.forward; |
|
| 418 |
} |
|
| 419 |
|
|
| 420 |
void firstOut(Arc& arc, const Node& node) const {
|
|
| 421 |
if (Parent::red(node)) {
|
|
| 422 |
Parent::firstFromRed(arc, node); |
|
| 423 |
arc.forward = true; |
|
| 424 |
} else {
|
|
| 425 |
Parent::firstFromBlue(arc, node); |
|
| 426 |
arc.forward = static_cast<Edge&>(arc) == INVALID; |
|
| 427 |
} |
|
| 428 |
} |
|
| 429 |
void nextOut(Arc& arc) const {
|
|
| 430 |
if (arc.forward) {
|
|
| 431 |
Parent::nextFromRed(arc); |
|
| 432 |
} else {
|
|
| 433 |
Parent::nextFromBlue(arc); |
|
| 434 |
arc.forward = static_cast<Edge&>(arc) == INVALID; |
|
| 435 |
} |
|
| 436 |
} |
|
| 437 |
|
|
| 438 |
void firstIn(Arc& arc, const Node& node) const {
|
|
| 439 |
if (Parent::blue(node)) {
|
|
| 440 |
Parent::firstFromBlue(arc, node); |
|
| 441 |
arc.forward = true; |
|
| 442 |
} else {
|
|
| 443 |
Parent::firstFromRed(arc, node); |
|
| 444 |
arc.forward = static_cast<Edge&>(arc) == INVALID; |
|
| 445 |
} |
|
| 446 |
} |
|
| 447 |
void nextIn(Arc& arc) const {
|
|
| 448 |
if (arc.forward) {
|
|
| 449 |
Parent::nextFromBlue(arc); |
|
| 450 |
} else {
|
|
| 451 |
Parent::nextFromRed(arc); |
|
| 452 |
arc.forward = static_cast<Edge&>(arc) == INVALID; |
|
| 453 |
} |
|
| 454 |
} |
|
| 455 |
|
|
| 456 |
Node source(const Arc& arc) const {
|
|
| 457 |
return arc.forward ? Parent::red(arc) : Parent::blue(arc); |
|
| 458 |
} |
|
| 459 |
Node target(const Arc& arc) const {
|
|
| 460 |
return arc.forward ? Parent::blue(arc) : Parent::red(arc); |
|
| 461 |
} |
|
| 462 |
|
|
| 463 |
int id(const Arc& arc) const {
|
|
| 464 |
return (Parent::id(static_cast<const Edge&>(arc)) << 1) + |
|
| 465 |
(arc.forward ? 0 : 1); |
|
| 466 |
} |
|
| 467 |
Arc arcFromId(int ix) const {
|
|
| 468 |
return Arc(Parent::fromEdgeId(ix >> 1), (ix & 1) == 0); |
|
| 469 |
} |
|
| 470 |
int maxArcId() const {
|
|
| 471 |
return (Parent::maxEdgeId() << 1) + 1; |
|
| 472 |
} |
|
| 473 |
|
|
| 474 |
bool direction(const Arc& arc) const {
|
|
| 475 |
return arc.forward; |
|
| 476 |
} |
|
| 477 |
|
|
| 478 |
Arc direct(const Edge& arc, bool dir) const {
|
|
| 479 |
return Arc(arc, dir); |
|
| 480 |
} |
|
| 481 |
|
|
| 482 |
int arcNum() const {
|
|
| 483 |
return 2 * Parent::edgeNum(); |
|
| 484 |
} |
|
| 485 |
|
|
| 486 |
int edgeNum() const {
|
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return Parent::edgeNum(); |
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| 488 |
} |
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| 489 |
|
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| 490 |
|
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| 491 |
}; |
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| 492 |
} |
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| 493 |
|
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| 494 |
#endif |
| 1 |
AC_DEFUN([LX_CHECK_CLP], |
|
| 2 |
[ |
|
| 3 |
AC_ARG_WITH([clp], |
|
| 4 |
AS_HELP_STRING([--with-clp@<:@=PREFIX@:>@], [search for CLP under PREFIX or under the default search paths if PREFIX is not given @<:@default@:>@]) |
|
| 5 |
AS_HELP_STRING([--without-clp], [disable checking for CLP]), |
|
| 6 |
[], [with_clp=yes]) |
|
| 7 |
|
|
| 8 |
AC_ARG_WITH([clp-includedir], |
|
| 9 |
AS_HELP_STRING([--with-clp-includedir=DIR], [search for CLP headers in DIR]), |
|
| 10 |
[], [with_clp_includedir=no]) |
|
| 11 |
|
|
| 12 |
AC_ARG_WITH([clp-libdir], |
|
| 13 |
AS_HELP_STRING([--with-clp-libdir=DIR], [search for CLP libraries in DIR]), |
|
| 14 |
[], [with_clp_libdir=no]) |
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| 15 |
|
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| 16 |
lx_clp_found=no |
|
| 17 |
if test x"$with_clp" != x"no"; then |
|
| 18 |
AC_MSG_CHECKING([for CLP]) |
|
| 19 |
|
|
| 20 |
if test x"$with_clp_includedir" != x"no"; then |
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| 21 |
CLP_CXXFLAGS="-I$with_clp_includedir" |
|
| 22 |
elif test x"$with_clp" != x"yes"; then |
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CLP_CXXFLAGS="-I$with_clp/include" |
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fi |
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| 25 |
|
|
| 26 |
if test x"$with_clp_libdir" != x"no"; then |
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CLP_LDFLAGS="-L$with_clp_libdir" |
|
| 28 |
elif test x"$with_clp" != x"yes"; then |
|
| 29 |
CLP_LDFLAGS="-L$with_clp/lib" |
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fi |
|
| 31 |
CLP_LIBS="-lClp -lCoinUtils -lm" |
|
| 32 |
|
|
| 33 |
lx_save_cxxflags="$CXXFLAGS" |
|
| 34 |
lx_save_ldflags="$LDFLAGS" |
|
| 35 |
lx_save_libs="$LIBS" |
|
| 36 |
CXXFLAGS="$CLP_CXXFLAGS" |
|
| 37 |
LDFLAGS="$CLP_LDFLAGS" |
|
| 38 |
LIBS="$CLP_LIBS" |
|
| 39 |
|
|
| 40 |
lx_clp_test_prog=' |
|
| 41 |
#include <coin/ClpModel.hpp> |
|
| 42 |
|
|
| 43 |
int main(int argc, char** argv) |
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{
|
|
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ClpModel clp; |
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| 46 |
return 0; |
|
| 47 |
}' |
|
| 48 |
|
|
| 49 |
AC_LANG_PUSH(C++) |
|
| 50 |
AC_LINK_IFELSE([$lx_clp_test_prog], [lx_clp_found=yes], [lx_clp_found=no]) |
|
| 51 |
AC_LANG_POP(C++) |
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| 52 |
|
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| 53 |
CXXFLAGS="$lx_save_cxxflags" |
|
| 54 |
LDFLAGS="$lx_save_ldflags" |
|
| 55 |
LIBS="$lx_save_libs" |
|
| 56 |
|
|
| 57 |
if test x"$lx_clp_found" = x"yes"; then |
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| 58 |
AC_DEFINE([HAVE_CLP], [1], [Define to 1 if you have CLP.]) |
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| 59 |
lx_lp_found=yes |
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| 60 |
AC_DEFINE([HAVE_LP], [1], [Define to 1 if you have any LP solver.]) |
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AC_MSG_RESULT([yes]) |
|
| 62 |
else |
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| 63 |
CLP_CXXFLAGS="" |
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| 64 |
CLP_LDFLAGS="" |
|
| 65 |
CLP_LIBS="" |
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| 66 |
AC_MSG_RESULT([no]) |
|
| 67 |
fi |
|
| 68 |
fi |
|
| 69 |
CLP_LIBS="$CLP_LDFLAGS $CLP_LIBS" |
|
| 70 |
AC_SUBST(CLP_CXXFLAGS) |
|
| 71 |
AC_SUBST(CLP_LIBS) |
|
| 72 |
AM_CONDITIONAL([HAVE_CLP], [test x"$lx_clp_found" = x"yes"]) |
|
| 73 |
]) |
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