doc/images/nodeshape_2.eps
author Peter Kovacs <kpeter@inf.elte.hu>
Tue, 15 Mar 2011 19:32:21 +0100
changeset 1047 ddd3c0d3d9bf
permissions -rw-r--r--
Implement the scaling Price Refinement heuristic in CostScaling (#417)
instead of Early Termination.

These two heuristics are similar, but the newer one is faster
and not only makes it possible to skip some epsilon phases, but
it can improve the performance of the other phases, as well.
     1 %!PS-Adobe-2.0 EPSF-2.0
     2 %%Title: LEMON GraphToEps figure
     3 %%Creator: LEMON GraphToEps function
     4 %%BoundingBox: 0 0 200 200
     5 %%EndComments
     6 /lb { setlinewidth setrgbcolor newpath moveto
     7       4 2 roll 1 index 1 index curveto stroke } bind def
     8 /l { setlinewidth setrgbcolor newpath moveto lineto stroke } bind def
     9 /c { newpath dup 3 index add 2 index moveto 0 360 arc closepath } bind def
    10 /sq { newpath 2 index 1 index add 2 index 2 index add moveto
    11       2 index 1 index sub 2 index 2 index add lineto
    12       2 index 1 index sub 2 index 2 index sub lineto
    13       2 index 1 index add 2 index 2 index sub lineto
    14       closepath pop pop pop} bind def
    15 /di { newpath 2 index 1 index add 2 index moveto
    16       2 index             2 index 2 index add lineto
    17       2 index 1 index sub 2 index             lineto
    18       2 index             2 index 2 index sub lineto
    19       closepath pop pop pop} bind def
    20 /nc { 0 0 0 setrgbcolor 5 index 5 index 5 index c fill
    21      setrgbcolor 1.1 div c fill
    22    } bind def
    23 /nsq { 0 0 0 setrgbcolor 5 index 5 index 5 index sq fill
    24      setrgbcolor 1.1 div sq fill
    25    } bind def
    26 /ndi { 0 0 0 setrgbcolor 5 index 5 index 5 index di fill
    27      setrgbcolor 1.1 div di fill
    28    } bind def
    29 /arrl 1 def
    30 /arrw 0.3 def
    31 /lrl { 2 index mul exch 2 index mul exch rlineto pop} bind def
    32 /arr { setrgbcolor /y1 exch def /x1 exch def /dy exch def /dx exch def
    33        /w exch def /len exch def
    34        newpath x1 dy w 2 div mul add y1 dx w 2 div mul sub moveto
    35        len w sub arrl sub dx dy lrl
    36        arrw dy dx neg lrl
    37        dx arrl w add mul dy w 2 div arrw add mul sub
    38        dy arrl w add mul dx w 2 div arrw add mul add rlineto
    39        dx arrl w add mul neg dy w 2 div arrw add mul sub
    40        dy arrl w add mul neg dx w 2 div arrw add mul add rlineto
    41        arrw dy dx neg lrl
    42        len w sub arrl sub neg dx dy lrl
    43        closepath fill } bind def
    44 /cshow { 2 index 2 index moveto dup stringwidth pop
    45          neg 2 div fosi .35 mul neg rmoveto show pop pop} def
    46 
    47 gsave
    48 100 dup scale
    49 %Edges:
    50 gsave
    51 grestore
    52 %Nodes:
    53 gsave
    54 1 1 1 0.2 1 0.2 ndi
    55 grestore
    56 grestore
    57 showpage