1 | /* -*- C++ -*- |
---|
2 | * |
---|
3 | * This file is a part of LEMON, a generic C++ optimization library |
---|
4 | * |
---|
5 | * Copyright (C) 2003-2007 |
---|
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_GRAPH_UTILS_H |
---|
20 | #define LEMON_GRAPH_UTILS_H |
---|
21 | |
---|
22 | #include <iterator> |
---|
23 | #include <vector> |
---|
24 | #include <map> |
---|
25 | #include <cmath> |
---|
26 | #include <algorithm> |
---|
27 | |
---|
28 | #include <lemon/bits/invalid.h> |
---|
29 | #include <lemon/bits/utility.h> |
---|
30 | #include <lemon/maps.h> |
---|
31 | #include <lemon/bits/traits.h> |
---|
32 | |
---|
33 | #include <lemon/bits/alteration_notifier.h> |
---|
34 | #include <lemon/bits/default_map.h> |
---|
35 | |
---|
36 | ///\ingroup gutils |
---|
37 | ///\file |
---|
38 | ///\brief Graph utilities. |
---|
39 | |
---|
40 | namespace lemon { |
---|
41 | |
---|
42 | /// \addtogroup gutils |
---|
43 | /// @{ |
---|
44 | |
---|
45 | ///Creates convenience typedefs for the graph types and iterators |
---|
46 | |
---|
47 | ///This \c \#define creates convenience typedefs for the following types |
---|
48 | ///of \c Graph: \c Node, \c NodeIt, \c Edge, \c EdgeIt, \c InEdgeIt, |
---|
49 | ///\c OutEdgeIt |
---|
50 | ///\note If \c G it a template parameter, it should be used in this way. |
---|
51 | ///\code |
---|
52 | /// GRAPH_TYPEDEFS(typename G); |
---|
53 | ///\endcode |
---|
54 | /// |
---|
55 | ///\warning There are no typedefs for the graph maps because of the lack of |
---|
56 | ///template typedefs in C++. |
---|
57 | #define GRAPH_TYPEDEFS(Graph) \ |
---|
58 | typedef Graph:: Node Node; \ |
---|
59 | typedef Graph:: NodeIt NodeIt; \ |
---|
60 | typedef Graph:: Edge Edge; \ |
---|
61 | typedef Graph:: EdgeIt EdgeIt; \ |
---|
62 | typedef Graph:: InEdgeIt InEdgeIt; \ |
---|
63 | typedef Graph::OutEdgeIt OutEdgeIt |
---|
64 | |
---|
65 | ///Creates convenience typedefs for the undirected graph types and iterators |
---|
66 | |
---|
67 | ///This \c \#define creates the same convenience typedefs as defined by |
---|
68 | ///\ref GRAPH_TYPEDEFS(Graph) and three more, namely it creates |
---|
69 | ///\c UEdge, \c UEdgeIt, \c IncEdgeIt, |
---|
70 | /// |
---|
71 | ///\note If \c G it a template parameter, it should be used in this way. |
---|
72 | ///\code |
---|
73 | /// UGRAPH_TYPEDEFS(typename G); |
---|
74 | ///\endcode |
---|
75 | /// |
---|
76 | ///\warning There are no typedefs for the graph maps because of the lack of |
---|
77 | ///template typedefs in C++. |
---|
78 | #define UGRAPH_TYPEDEFS(Graph) \ |
---|
79 | GRAPH_TYPEDEFS(Graph); \ |
---|
80 | typedef Graph:: UEdge UEdge; \ |
---|
81 | typedef Graph:: UEdgeIt UEdgeIt; \ |
---|
82 | typedef Graph:: IncEdgeIt IncEdgeIt |
---|
83 | |
---|
84 | ///\brief Creates convenience typedefs for the bipartite undirected graph |
---|
85 | ///types and iterators |
---|
86 | |
---|
87 | ///This \c \#define creates the same convenience typedefs as defined by |
---|
88 | ///\ref UGRAPH_TYPEDEFS(Graph) and two more, namely it creates |
---|
89 | ///\c ANodeIt, \c BNodeIt, |
---|
90 | /// |
---|
91 | ///\note If \c G it a template parameter, it should be used in this way. |
---|
92 | ///\code |
---|
93 | /// BPUGRAPH_TYPEDEFS(typename G); |
---|
94 | ///\endcode |
---|
95 | /// |
---|
96 | ///\warning There are no typedefs for the graph maps because of the lack of |
---|
97 | ///template typedefs in C++. |
---|
98 | #define BPUGRAPH_TYPEDEFS(Graph) \ |
---|
99 | UGRAPH_TYPEDEFS(Graph); \ |
---|
100 | typedef Graph::ANode ANode; \ |
---|
101 | typedef Graph::BNode BNode; \ |
---|
102 | typedef Graph::ANodeIt ANodeIt; \ |
---|
103 | typedef Graph::BNodeIt BNodeIt |
---|
104 | |
---|
105 | /// \brief Function to count the items in the graph. |
---|
106 | /// |
---|
107 | /// This function counts the items (nodes, edges etc) in the graph. |
---|
108 | /// The complexity of the function is O(n) because |
---|
109 | /// it iterates on all of the items. |
---|
110 | |
---|
111 | template <typename Graph, typename Item> |
---|
112 | inline int countItems(const Graph& g) { |
---|
113 | typedef typename ItemSetTraits<Graph, Item>::ItemIt ItemIt; |
---|
114 | int num = 0; |
---|
115 | for (ItemIt it(g); it != INVALID; ++it) { |
---|
116 | ++num; |
---|
117 | } |
---|
118 | return num; |
---|
119 | } |
---|
120 | |
---|
121 | // Node counting: |
---|
122 | |
---|
123 | namespace _graph_utils_bits { |
---|
124 | |
---|
125 | template <typename Graph, typename Enable = void> |
---|
126 | struct CountNodesSelector { |
---|
127 | static int count(const Graph &g) { |
---|
128 | return countItems<Graph, typename Graph::Node>(g); |
---|
129 | } |
---|
130 | }; |
---|
131 | |
---|
132 | template <typename Graph> |
---|
133 | struct CountNodesSelector< |
---|
134 | Graph, typename |
---|
135 | enable_if<typename Graph::NodeNumTag, void>::type> |
---|
136 | { |
---|
137 | static int count(const Graph &g) { |
---|
138 | return g.nodeNum(); |
---|
139 | } |
---|
140 | }; |
---|
141 | } |
---|
142 | |
---|
143 | /// \brief Function to count the nodes in the graph. |
---|
144 | /// |
---|
145 | /// This function counts the nodes in the graph. |
---|
146 | /// The complexity of the function is O(n) but for some |
---|
147 | /// graph structures it is specialized to run in O(1). |
---|
148 | /// |
---|
149 | /// If the graph contains a \e nodeNum() member function and a |
---|
150 | /// \e NodeNumTag tag then this function calls directly the member |
---|
151 | /// function to query the cardinality of the node set. |
---|
152 | template <typename Graph> |
---|
153 | inline int countNodes(const Graph& g) { |
---|
154 | return _graph_utils_bits::CountNodesSelector<Graph>::count(g); |
---|
155 | } |
---|
156 | |
---|
157 | namespace _graph_utils_bits { |
---|
158 | |
---|
159 | template <typename Graph, typename Enable = void> |
---|
160 | struct CountANodesSelector { |
---|
161 | static int count(const Graph &g) { |
---|
162 | return countItems<Graph, typename Graph::ANode>(g); |
---|
163 | } |
---|
164 | }; |
---|
165 | |
---|
166 | template <typename Graph> |
---|
167 | struct CountANodesSelector< |
---|
168 | Graph, typename |
---|
169 | enable_if<typename Graph::NodeNumTag, void>::type> |
---|
170 | { |
---|
171 | static int count(const Graph &g) { |
---|
172 | return g.aNodeNum(); |
---|
173 | } |
---|
174 | }; |
---|
175 | } |
---|
176 | |
---|
177 | /// \brief Function to count the anodes in the graph. |
---|
178 | /// |
---|
179 | /// This function counts the anodes in the graph. |
---|
180 | /// The complexity of the function is O(an) but for some |
---|
181 | /// graph structures it is specialized to run in O(1). |
---|
182 | /// |
---|
183 | /// If the graph contains an \e aNodeNum() member function and a |
---|
184 | /// \e NodeNumTag tag then this function calls directly the member |
---|
185 | /// function to query the cardinality of the A-node set. |
---|
186 | template <typename Graph> |
---|
187 | inline int countANodes(const Graph& g) { |
---|
188 | return _graph_utils_bits::CountANodesSelector<Graph>::count(g); |
---|
189 | } |
---|
190 | |
---|
191 | namespace _graph_utils_bits { |
---|
192 | |
---|
193 | template <typename Graph, typename Enable = void> |
---|
194 | struct CountBNodesSelector { |
---|
195 | static int count(const Graph &g) { |
---|
196 | return countItems<Graph, typename Graph::BNode>(g); |
---|
197 | } |
---|
198 | }; |
---|
199 | |
---|
200 | template <typename Graph> |
---|
201 | struct CountBNodesSelector< |
---|
202 | Graph, typename |
---|
203 | enable_if<typename Graph::NodeNumTag, void>::type> |
---|
204 | { |
---|
205 | static int count(const Graph &g) { |
---|
206 | return g.bNodeNum(); |
---|
207 | } |
---|
208 | }; |
---|
209 | } |
---|
210 | |
---|
211 | /// \brief Function to count the bnodes in the graph. |
---|
212 | /// |
---|
213 | /// This function counts the bnodes in the graph. |
---|
214 | /// The complexity of the function is O(bn) but for some |
---|
215 | /// graph structures it is specialized to run in O(1). |
---|
216 | /// |
---|
217 | /// If the graph contains a \e bNodeNum() member function and a |
---|
218 | /// \e NodeNumTag tag then this function calls directly the member |
---|
219 | /// function to query the cardinality of the B-node set. |
---|
220 | template <typename Graph> |
---|
221 | inline int countBNodes(const Graph& g) { |
---|
222 | return _graph_utils_bits::CountBNodesSelector<Graph>::count(g); |
---|
223 | } |
---|
224 | |
---|
225 | |
---|
226 | // Edge counting: |
---|
227 | |
---|
228 | namespace _graph_utils_bits { |
---|
229 | |
---|
230 | template <typename Graph, typename Enable = void> |
---|
231 | struct CountEdgesSelector { |
---|
232 | static int count(const Graph &g) { |
---|
233 | return countItems<Graph, typename Graph::Edge>(g); |
---|
234 | } |
---|
235 | }; |
---|
236 | |
---|
237 | template <typename Graph> |
---|
238 | struct CountEdgesSelector< |
---|
239 | Graph, |
---|
240 | typename enable_if<typename Graph::EdgeNumTag, void>::type> |
---|
241 | { |
---|
242 | static int count(const Graph &g) { |
---|
243 | return g.edgeNum(); |
---|
244 | } |
---|
245 | }; |
---|
246 | } |
---|
247 | |
---|
248 | /// \brief Function to count the edges in the graph. |
---|
249 | /// |
---|
250 | /// This function counts the edges in the graph. |
---|
251 | /// The complexity of the function is O(e) but for some |
---|
252 | /// graph structures it is specialized to run in O(1). |
---|
253 | /// |
---|
254 | /// If the graph contains a \e edgeNum() member function and a |
---|
255 | /// \e EdgeNumTag tag then this function calls directly the member |
---|
256 | /// function to query the cardinality of the edge set. |
---|
257 | template <typename Graph> |
---|
258 | inline int countEdges(const Graph& g) { |
---|
259 | return _graph_utils_bits::CountEdgesSelector<Graph>::count(g); |
---|
260 | } |
---|
261 | |
---|
262 | // Undirected edge counting: |
---|
263 | namespace _graph_utils_bits { |
---|
264 | |
---|
265 | template <typename Graph, typename Enable = void> |
---|
266 | struct CountUEdgesSelector { |
---|
267 | static int count(const Graph &g) { |
---|
268 | return countItems<Graph, typename Graph::UEdge>(g); |
---|
269 | } |
---|
270 | }; |
---|
271 | |
---|
272 | template <typename Graph> |
---|
273 | struct CountUEdgesSelector< |
---|
274 | Graph, |
---|
275 | typename enable_if<typename Graph::EdgeNumTag, void>::type> |
---|
276 | { |
---|
277 | static int count(const Graph &g) { |
---|
278 | return g.uEdgeNum(); |
---|
279 | } |
---|
280 | }; |
---|
281 | } |
---|
282 | |
---|
283 | /// \brief Function to count the undirected edges in the graph. |
---|
284 | /// |
---|
285 | /// This function counts the undirected edges in the graph. |
---|
286 | /// The complexity of the function is O(e) but for some |
---|
287 | /// graph structures it is specialized to run in O(1). |
---|
288 | /// |
---|
289 | /// If the graph contains a \e uEdgeNum() member function and a |
---|
290 | /// \e EdgeNumTag tag then this function calls directly the member |
---|
291 | /// function to query the cardinality of the undirected edge set. |
---|
292 | template <typename Graph> |
---|
293 | inline int countUEdges(const Graph& g) { |
---|
294 | return _graph_utils_bits::CountUEdgesSelector<Graph>::count(g); |
---|
295 | |
---|
296 | } |
---|
297 | |
---|
298 | |
---|
299 | template <typename Graph, typename DegIt> |
---|
300 | inline int countNodeDegree(const Graph& _g, const typename Graph::Node& _n) { |
---|
301 | int num = 0; |
---|
302 | for (DegIt it(_g, _n); it != INVALID; ++it) { |
---|
303 | ++num; |
---|
304 | } |
---|
305 | return num; |
---|
306 | } |
---|
307 | |
---|
308 | /// \brief Function to count the number of the out-edges from node \c n. |
---|
309 | /// |
---|
310 | /// This function counts the number of the out-edges from node \c n |
---|
311 | /// in the graph. |
---|
312 | template <typename Graph> |
---|
313 | inline int countOutEdges(const Graph& _g, const typename Graph::Node& _n) { |
---|
314 | return countNodeDegree<Graph, typename Graph::OutEdgeIt>(_g, _n); |
---|
315 | } |
---|
316 | |
---|
317 | /// \brief Function to count the number of the in-edges to node \c n. |
---|
318 | /// |
---|
319 | /// This function counts the number of the in-edges to node \c n |
---|
320 | /// in the graph. |
---|
321 | template <typename Graph> |
---|
322 | inline int countInEdges(const Graph& _g, const typename Graph::Node& _n) { |
---|
323 | return countNodeDegree<Graph, typename Graph::InEdgeIt>(_g, _n); |
---|
324 | } |
---|
325 | |
---|
326 | /// \brief Function to count the number of the inc-edges to node \c n. |
---|
327 | /// |
---|
328 | /// This function counts the number of the inc-edges to node \c n |
---|
329 | /// in the graph. |
---|
330 | template <typename Graph> |
---|
331 | inline int countIncEdges(const Graph& _g, const typename Graph::Node& _n) { |
---|
332 | return countNodeDegree<Graph, typename Graph::IncEdgeIt>(_g, _n); |
---|
333 | } |
---|
334 | |
---|
335 | namespace _graph_utils_bits { |
---|
336 | |
---|
337 | template <typename Graph, typename Enable = void> |
---|
338 | struct FindEdgeSelector { |
---|
339 | typedef typename Graph::Node Node; |
---|
340 | typedef typename Graph::Edge Edge; |
---|
341 | static Edge find(const Graph &g, Node u, Node v, Edge e) { |
---|
342 | if (e == INVALID) { |
---|
343 | g.firstOut(e, u); |
---|
344 | } else { |
---|
345 | g.nextOut(e); |
---|
346 | } |
---|
347 | while (e != INVALID && g.target(e) != v) { |
---|
348 | g.nextOut(e); |
---|
349 | } |
---|
350 | return e; |
---|
351 | } |
---|
352 | }; |
---|
353 | |
---|
354 | template <typename Graph> |
---|
355 | struct FindEdgeSelector< |
---|
356 | Graph, |
---|
357 | typename enable_if<typename Graph::FindEdgeTag, void>::type> |
---|
358 | { |
---|
359 | typedef typename Graph::Node Node; |
---|
360 | typedef typename Graph::Edge Edge; |
---|
361 | static Edge find(const Graph &g, Node u, Node v, Edge prev) { |
---|
362 | return g.findEdge(u, v, prev); |
---|
363 | } |
---|
364 | }; |
---|
365 | } |
---|
366 | |
---|
367 | /// \brief Finds an edge between two nodes of a graph. |
---|
368 | /// |
---|
369 | /// Finds an edge from node \c u to node \c v in graph \c g. |
---|
370 | /// |
---|
371 | /// If \c prev is \ref INVALID (this is the default value), then |
---|
372 | /// it finds the first edge from \c u to \c v. Otherwise it looks for |
---|
373 | /// the next edge from \c u to \c v after \c prev. |
---|
374 | /// \return The found edge or \ref INVALID if there is no such an edge. |
---|
375 | /// |
---|
376 | /// Thus you can iterate through each edge from \c u to \c v as it follows. |
---|
377 | ///\code |
---|
378 | /// for(Edge e=findEdge(g,u,v);e!=INVALID;e=findEdge(g,u,v,e)) { |
---|
379 | /// ... |
---|
380 | /// } |
---|
381 | ///\endcode |
---|
382 | /// |
---|
383 | ///\sa EdgeLookUp |
---|
384 | ///\sa AllEdgeLookUp |
---|
385 | ///\sa ConEdgeIt |
---|
386 | template <typename Graph> |
---|
387 | inline typename Graph::Edge |
---|
388 | findEdge(const Graph &g, typename Graph::Node u, typename Graph::Node v, |
---|
389 | typename Graph::Edge prev = INVALID) { |
---|
390 | return _graph_utils_bits::FindEdgeSelector<Graph>::find(g, u, v, prev); |
---|
391 | } |
---|
392 | |
---|
393 | /// \brief Iterator for iterating on edges connected the same nodes. |
---|
394 | /// |
---|
395 | /// Iterator for iterating on edges connected the same nodes. It is |
---|
396 | /// higher level interface for the findEdge() function. You can |
---|
397 | /// use it the following way: |
---|
398 | ///\code |
---|
399 | /// for (ConEdgeIt<Graph> it(g, src, trg); it != INVALID; ++it) { |
---|
400 | /// ... |
---|
401 | /// } |
---|
402 | ///\endcode |
---|
403 | /// |
---|
404 | ///\sa findEdge() |
---|
405 | ///\sa EdgeLookUp |
---|
406 | ///\sa AllEdgeLookUp |
---|
407 | /// |
---|
408 | /// \author Balazs Dezso |
---|
409 | template <typename _Graph> |
---|
410 | class ConEdgeIt : public _Graph::Edge { |
---|
411 | public: |
---|
412 | |
---|
413 | typedef _Graph Graph; |
---|
414 | typedef typename Graph::Edge Parent; |
---|
415 | |
---|
416 | typedef typename Graph::Edge Edge; |
---|
417 | typedef typename Graph::Node Node; |
---|
418 | |
---|
419 | /// \brief Constructor. |
---|
420 | /// |
---|
421 | /// Construct a new ConEdgeIt iterating on the edges which |
---|
422 | /// connects the \c u and \c v node. |
---|
423 | ConEdgeIt(const Graph& g, Node u, Node v) : graph(g) { |
---|
424 | Parent::operator=(findEdge(graph, u, v)); |
---|
425 | } |
---|
426 | |
---|
427 | /// \brief Constructor. |
---|
428 | /// |
---|
429 | /// Construct a new ConEdgeIt which continues the iterating from |
---|
430 | /// the \c e edge. |
---|
431 | ConEdgeIt(const Graph& g, Edge e) : Parent(e), graph(g) {} |
---|
432 | |
---|
433 | /// \brief Increment operator. |
---|
434 | /// |
---|
435 | /// It increments the iterator and gives back the next edge. |
---|
436 | ConEdgeIt& operator++() { |
---|
437 | Parent::operator=(findEdge(graph, graph.source(*this), |
---|
438 | graph.target(*this), *this)); |
---|
439 | return *this; |
---|
440 | } |
---|
441 | private: |
---|
442 | const Graph& graph; |
---|
443 | }; |
---|
444 | |
---|
445 | namespace _graph_utils_bits { |
---|
446 | |
---|
447 | template <typename Graph, typename Enable = void> |
---|
448 | struct FindUEdgeSelector { |
---|
449 | typedef typename Graph::Node Node; |
---|
450 | typedef typename Graph::UEdge UEdge; |
---|
451 | static UEdge find(const Graph &g, Node u, Node v, UEdge e) { |
---|
452 | bool b; |
---|
453 | if (u != v) { |
---|
454 | if (e == INVALID) { |
---|
455 | g.firstInc(e, b, u); |
---|
456 | } else { |
---|
457 | b = g.source(e) == u; |
---|
458 | g.nextInc(e, b); |
---|
459 | } |
---|
460 | while (e != INVALID && (b ? g.target(e) : g.source(e)) != v) { |
---|
461 | g.nextInc(e, b); |
---|
462 | } |
---|
463 | } else { |
---|
464 | if (e == INVALID) { |
---|
465 | g.firstInc(e, b, u); |
---|
466 | } else { |
---|
467 | b = true; |
---|
468 | g.nextInc(e, b); |
---|
469 | } |
---|
470 | while (e != INVALID && (!b || g.target(e) != v)) { |
---|
471 | g.nextInc(e, b); |
---|
472 | } |
---|
473 | } |
---|
474 | return e; |
---|
475 | } |
---|
476 | }; |
---|
477 | |
---|
478 | template <typename Graph> |
---|
479 | struct FindUEdgeSelector< |
---|
480 | Graph, |
---|
481 | typename enable_if<typename Graph::FindEdgeTag, void>::type> |
---|
482 | { |
---|
483 | typedef typename Graph::Node Node; |
---|
484 | typedef typename Graph::UEdge UEdge; |
---|
485 | static UEdge find(const Graph &g, Node u, Node v, UEdge prev) { |
---|
486 | return g.findUEdge(u, v, prev); |
---|
487 | } |
---|
488 | }; |
---|
489 | } |
---|
490 | |
---|
491 | /// \brief Finds an uedge between two nodes of a graph. |
---|
492 | /// |
---|
493 | /// Finds an uedge from node \c u to node \c v in graph \c g. |
---|
494 | /// If the node \c u and node \c v is equal then each loop edge |
---|
495 | /// will be enumerated. |
---|
496 | /// |
---|
497 | /// If \c prev is \ref INVALID (this is the default value), then |
---|
498 | /// it finds the first edge from \c u to \c v. Otherwise it looks for |
---|
499 | /// the next edge from \c u to \c v after \c prev. |
---|
500 | /// \return The found edge or \ref INVALID if there is no such an edge. |
---|
501 | /// |
---|
502 | /// Thus you can iterate through each edge from \c u to \c v as it follows. |
---|
503 | ///\code |
---|
504 | /// for(UEdge e = findUEdge(g,u,v); e != INVALID; |
---|
505 | /// e = findUEdge(g,u,v,e)) { |
---|
506 | /// ... |
---|
507 | /// } |
---|
508 | ///\endcode |
---|
509 | /// |
---|
510 | ///\sa ConEdgeIt |
---|
511 | |
---|
512 | template <typename Graph> |
---|
513 | inline typename Graph::UEdge |
---|
514 | findUEdge(const Graph &g, typename Graph::Node u, typename Graph::Node v, |
---|
515 | typename Graph::UEdge p = INVALID) { |
---|
516 | return _graph_utils_bits::FindUEdgeSelector<Graph>::find(g, u, v, p); |
---|
517 | } |
---|
518 | |
---|
519 | /// \brief Iterator for iterating on uedges connected the same nodes. |
---|
520 | /// |
---|
521 | /// Iterator for iterating on uedges connected the same nodes. It is |
---|
522 | /// higher level interface for the findUEdge() function. You can |
---|
523 | /// use it the following way: |
---|
524 | ///\code |
---|
525 | /// for (ConUEdgeIt<Graph> it(g, src, trg); it != INVALID; ++it) { |
---|
526 | /// ... |
---|
527 | /// } |
---|
528 | ///\endcode |
---|
529 | /// |
---|
530 | ///\sa findUEdge() |
---|
531 | /// |
---|
532 | /// \author Balazs Dezso |
---|
533 | template <typename _Graph> |
---|
534 | class ConUEdgeIt : public _Graph::UEdge { |
---|
535 | public: |
---|
536 | |
---|
537 | typedef _Graph Graph; |
---|
538 | typedef typename Graph::UEdge Parent; |
---|
539 | |
---|
540 | typedef typename Graph::UEdge UEdge; |
---|
541 | typedef typename Graph::Node Node; |
---|
542 | |
---|
543 | /// \brief Constructor. |
---|
544 | /// |
---|
545 | /// Construct a new ConUEdgeIt iterating on the edges which |
---|
546 | /// connects the \c u and \c v node. |
---|
547 | ConUEdgeIt(const Graph& g, Node u, Node v) : graph(g) { |
---|
548 | Parent::operator=(findUEdge(graph, u, v)); |
---|
549 | } |
---|
550 | |
---|
551 | /// \brief Constructor. |
---|
552 | /// |
---|
553 | /// Construct a new ConUEdgeIt which continues the iterating from |
---|
554 | /// the \c e edge. |
---|
555 | ConUEdgeIt(const Graph& g, UEdge e) : Parent(e), graph(g) {} |
---|
556 | |
---|
557 | /// \brief Increment operator. |
---|
558 | /// |
---|
559 | /// It increments the iterator and gives back the next edge. |
---|
560 | ConUEdgeIt& operator++() { |
---|
561 | Parent::operator=(findUEdge(graph, graph.source(*this), |
---|
562 | graph.target(*this), *this)); |
---|
563 | return *this; |
---|
564 | } |
---|
565 | private: |
---|
566 | const Graph& graph; |
---|
567 | }; |
---|
568 | |
---|
569 | /// \brief Copy a map. |
---|
570 | /// |
---|
571 | /// This function copies the \c from map to the \c to map. It uses the |
---|
572 | /// given iterator to iterate on the data structure and it uses the \c ref |
---|
573 | /// mapping to convert the from's keys to the to's keys. |
---|
574 | template <typename To, typename From, |
---|
575 | typename ItemIt, typename Ref> |
---|
576 | void copyMap(To& to, const From& from, |
---|
577 | ItemIt it, const Ref& ref) { |
---|
578 | for (; it != INVALID; ++it) { |
---|
579 | to[ref[it]] = from[it]; |
---|
580 | } |
---|
581 | } |
---|
582 | |
---|
583 | /// \brief Copy the from map to the to map. |
---|
584 | /// |
---|
585 | /// Copy the \c from map to the \c to map. It uses the given iterator |
---|
586 | /// to iterate on the data structure. |
---|
587 | template <typename To, typename From, typename ItemIt> |
---|
588 | void copyMap(To& to, const From& from, ItemIt it) { |
---|
589 | for (; it != INVALID; ++it) { |
---|
590 | to[it] = from[it]; |
---|
591 | } |
---|
592 | } |
---|
593 | |
---|
594 | namespace _graph_utils_bits { |
---|
595 | |
---|
596 | template <typename Graph, typename Item, typename RefMap> |
---|
597 | class MapCopyBase { |
---|
598 | public: |
---|
599 | virtual void copy(const Graph& from, const RefMap& refMap) = 0; |
---|
600 | |
---|
601 | virtual ~MapCopyBase() {} |
---|
602 | }; |
---|
603 | |
---|
604 | template <typename Graph, typename Item, typename RefMap, |
---|
605 | typename ToMap, typename FromMap> |
---|
606 | class MapCopy : public MapCopyBase<Graph, Item, RefMap> { |
---|
607 | public: |
---|
608 | |
---|
609 | MapCopy(ToMap& tmap, const FromMap& map) |
---|
610 | : _tmap(tmap), _map(map) {} |
---|
611 | |
---|
612 | virtual void copy(const Graph& graph, const RefMap& refMap) { |
---|
613 | typedef typename ItemSetTraits<Graph, Item>::ItemIt ItemIt; |
---|
614 | for (ItemIt it(graph); it != INVALID; ++it) { |
---|
615 | _tmap.set(refMap[it], _map[it]); |
---|
616 | } |
---|
617 | } |
---|
618 | |
---|
619 | private: |
---|
620 | ToMap& _tmap; |
---|
621 | const FromMap& _map; |
---|
622 | }; |
---|
623 | |
---|
624 | template <typename Graph, typename Item, typename RefMap, typename It> |
---|
625 | class ItemCopy : public MapCopyBase<Graph, Item, RefMap> { |
---|
626 | public: |
---|
627 | |
---|
628 | ItemCopy(It& it, const Item& item) : _it(it), _item(item) {} |
---|
629 | |
---|
630 | virtual void copy(const Graph&, const RefMap& refMap) { |
---|
631 | _it = refMap[_item]; |
---|
632 | } |
---|
633 | |
---|
634 | private: |
---|
635 | It& _it; |
---|
636 | Item _item; |
---|
637 | }; |
---|
638 | |
---|
639 | template <typename Graph, typename Item, typename RefMap, typename Ref> |
---|
640 | class RefCopy : public MapCopyBase<Graph, Item, RefMap> { |
---|
641 | public: |
---|
642 | |
---|
643 | RefCopy(Ref& map) : _map(map) {} |
---|
644 | |
---|
645 | virtual void copy(const Graph& graph, const RefMap& refMap) { |
---|
646 | typedef typename ItemSetTraits<Graph, Item>::ItemIt ItemIt; |
---|
647 | for (ItemIt it(graph); it != INVALID; ++it) { |
---|
648 | _map.set(it, refMap[it]); |
---|
649 | } |
---|
650 | } |
---|
651 | |
---|
652 | private: |
---|
653 | Ref& _map; |
---|
654 | }; |
---|
655 | |
---|
656 | template <typename Graph, typename Item, typename RefMap, |
---|
657 | typename CrossRef> |
---|
658 | class CrossRefCopy : public MapCopyBase<Graph, Item, RefMap> { |
---|
659 | public: |
---|
660 | |
---|
661 | CrossRefCopy(CrossRef& cmap) : _cmap(cmap) {} |
---|
662 | |
---|
663 | virtual void copy(const Graph& graph, const RefMap& refMap) { |
---|
664 | typedef typename ItemSetTraits<Graph, Item>::ItemIt ItemIt; |
---|
665 | for (ItemIt it(graph); it != INVALID; ++it) { |
---|
666 | _cmap.set(refMap[it], it); |
---|
667 | } |
---|
668 | } |
---|
669 | |
---|
670 | private: |
---|
671 | CrossRef& _cmap; |
---|
672 | }; |
---|
673 | |
---|
674 | template <typename Graph, typename Enable = void> |
---|
675 | struct GraphCopySelector { |
---|
676 | template <typename From, typename NodeRefMap, typename EdgeRefMap> |
---|
677 | static void copy(Graph &to, const From& from, |
---|
678 | NodeRefMap& nodeRefMap, EdgeRefMap& edgeRefMap) { |
---|
679 | for (typename From::NodeIt it(from); it != INVALID; ++it) { |
---|
680 | nodeRefMap[it] = to.addNode(); |
---|
681 | } |
---|
682 | for (typename From::EdgeIt it(from); it != INVALID; ++it) { |
---|
683 | edgeRefMap[it] = to.addEdge(nodeRefMap[from.source(it)], |
---|
684 | nodeRefMap[from.target(it)]); |
---|
685 | } |
---|
686 | } |
---|
687 | }; |
---|
688 | |
---|
689 | template <typename Graph> |
---|
690 | struct GraphCopySelector< |
---|
691 | Graph, |
---|
692 | typename enable_if<typename Graph::BuildTag, void>::type> |
---|
693 | { |
---|
694 | template <typename From, typename NodeRefMap, typename EdgeRefMap> |
---|
695 | static void copy(Graph &to, const From& from, |
---|
696 | NodeRefMap& nodeRefMap, EdgeRefMap& edgeRefMap) { |
---|
697 | to.build(from, nodeRefMap, edgeRefMap); |
---|
698 | } |
---|
699 | }; |
---|
700 | |
---|
701 | template <typename UGraph, typename Enable = void> |
---|
702 | struct UGraphCopySelector { |
---|
703 | template <typename From, typename NodeRefMap, typename UEdgeRefMap> |
---|
704 | static void copy(UGraph &to, const From& from, |
---|
705 | NodeRefMap& nodeRefMap, UEdgeRefMap& uEdgeRefMap) { |
---|
706 | for (typename From::NodeIt it(from); it != INVALID; ++it) { |
---|
707 | nodeRefMap[it] = to.addNode(); |
---|
708 | } |
---|
709 | for (typename From::UEdgeIt it(from); it != INVALID; ++it) { |
---|
710 | uEdgeRefMap[it] = to.addEdge(nodeRefMap[from.source(it)], |
---|
711 | nodeRefMap[from.target(it)]); |
---|
712 | } |
---|
713 | } |
---|
714 | }; |
---|
715 | |
---|
716 | template <typename UGraph> |
---|
717 | struct UGraphCopySelector< |
---|
718 | UGraph, |
---|
719 | typename enable_if<typename UGraph::BuildTag, void>::type> |
---|
720 | { |
---|
721 | template <typename From, typename NodeRefMap, typename UEdgeRefMap> |
---|
722 | static void copy(UGraph &to, const From& from, |
---|
723 | NodeRefMap& nodeRefMap, UEdgeRefMap& uEdgeRefMap) { |
---|
724 | to.build(from, nodeRefMap, uEdgeRefMap); |
---|
725 | } |
---|
726 | }; |
---|
727 | |
---|
728 | template <typename BpUGraph, typename Enable = void> |
---|
729 | struct BpUGraphCopySelector { |
---|
730 | template <typename From, typename ANodeRefMap, |
---|
731 | typename BNodeRefMap, typename UEdgeRefMap> |
---|
732 | static void copy(BpUGraph &to, const From& from, |
---|
733 | ANodeRefMap& aNodeRefMap, BNodeRefMap& bNodeRefMap, |
---|
734 | UEdgeRefMap& uEdgeRefMap) { |
---|
735 | for (typename From::ANodeIt it(from); it != INVALID; ++it) { |
---|
736 | aNodeRefMap[it] = to.addANode(); |
---|
737 | } |
---|
738 | for (typename From::BNodeIt it(from); it != INVALID; ++it) { |
---|
739 | bNodeRefMap[it] = to.addBNode(); |
---|
740 | } |
---|
741 | for (typename From::UEdgeIt it(from); it != INVALID; ++it) { |
---|
742 | uEdgeRefMap[it] = to.addEdge(aNodeRefMap[from.aNode(it)], |
---|
743 | bNodeRefMap[from.bNode(it)]); |
---|
744 | } |
---|
745 | } |
---|
746 | }; |
---|
747 | |
---|
748 | template <typename BpUGraph> |
---|
749 | struct BpUGraphCopySelector< |
---|
750 | BpUGraph, |
---|
751 | typename enable_if<typename BpUGraph::BuildTag, void>::type> |
---|
752 | { |
---|
753 | template <typename From, typename ANodeRefMap, |
---|
754 | typename BNodeRefMap, typename UEdgeRefMap> |
---|
755 | static void copy(BpUGraph &to, const From& from, |
---|
756 | ANodeRefMap& aNodeRefMap, BNodeRefMap& bNodeRefMap, |
---|
757 | UEdgeRefMap& uEdgeRefMap) { |
---|
758 | to.build(from, aNodeRefMap, bNodeRefMap, uEdgeRefMap); |
---|
759 | } |
---|
760 | }; |
---|
761 | |
---|
762 | |
---|
763 | } |
---|
764 | |
---|
765 | /// \brief Class to copy a graph. |
---|
766 | /// |
---|
767 | /// Class to copy a graph to another graph (duplicate a graph). The |
---|
768 | /// simplest way of using it is through the \c copyGraph() function. |
---|
769 | template <typename To, typename From> |
---|
770 | class GraphCopy { |
---|
771 | private: |
---|
772 | |
---|
773 | typedef typename From::Node Node; |
---|
774 | typedef typename From::NodeIt NodeIt; |
---|
775 | typedef typename From::Edge Edge; |
---|
776 | typedef typename From::EdgeIt EdgeIt; |
---|
777 | |
---|
778 | typedef typename To::Node TNode; |
---|
779 | typedef typename To::Edge TEdge; |
---|
780 | |
---|
781 | typedef typename From::template NodeMap<TNode> NodeRefMap; |
---|
782 | typedef typename From::template EdgeMap<TEdge> EdgeRefMap; |
---|
783 | |
---|
784 | |
---|
785 | public: |
---|
786 | |
---|
787 | |
---|
788 | /// \brief Constructor for the GraphCopy. |
---|
789 | /// |
---|
790 | /// It copies the content of the \c _from graph into the |
---|
791 | /// \c _to graph. |
---|
792 | GraphCopy(To& _to, const From& _from) |
---|
793 | : from(_from), to(_to) {} |
---|
794 | |
---|
795 | /// \brief Destructor of the GraphCopy |
---|
796 | /// |
---|
797 | /// Destructor of the GraphCopy |
---|
798 | ~GraphCopy() { |
---|
799 | for (int i = 0; i < int(nodeMapCopies.size()); ++i) { |
---|
800 | delete nodeMapCopies[i]; |
---|
801 | } |
---|
802 | for (int i = 0; i < int(edgeMapCopies.size()); ++i) { |
---|
803 | delete edgeMapCopies[i]; |
---|
804 | } |
---|
805 | |
---|
806 | } |
---|
807 | |
---|
808 | /// \brief Copies the node references into the given map. |
---|
809 | /// |
---|
810 | /// Copies the node references into the given map. |
---|
811 | template <typename NodeRef> |
---|
812 | GraphCopy& nodeRef(NodeRef& map) { |
---|
813 | nodeMapCopies.push_back(new _graph_utils_bits::RefCopy<From, Node, |
---|
814 | NodeRefMap, NodeRef>(map)); |
---|
815 | return *this; |
---|
816 | } |
---|
817 | |
---|
818 | /// \brief Copies the node cross references into the given map. |
---|
819 | /// |
---|
820 | /// Copies the node cross references (reverse references) into |
---|
821 | /// the given map. |
---|
822 | template <typename NodeCrossRef> |
---|
823 | GraphCopy& nodeCrossRef(NodeCrossRef& map) { |
---|
824 | nodeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<From, Node, |
---|
825 | NodeRefMap, NodeCrossRef>(map)); |
---|
826 | return *this; |
---|
827 | } |
---|
828 | |
---|
829 | /// \brief Make copy of the given map. |
---|
830 | /// |
---|
831 | /// Makes copy of the given map for the newly created graph. |
---|
832 | /// The new map's key type is the to graph's node type, |
---|
833 | /// and the copied map's key type is the from graph's node |
---|
834 | /// type. |
---|
835 | template <typename ToMap, typename FromMap> |
---|
836 | GraphCopy& nodeMap(ToMap& tmap, const FromMap& map) { |
---|
837 | nodeMapCopies.push_back(new _graph_utils_bits::MapCopy<From, Node, |
---|
838 | NodeRefMap, ToMap, FromMap>(tmap, map)); |
---|
839 | return *this; |
---|
840 | } |
---|
841 | |
---|
842 | /// \brief Make a copy of the given node. |
---|
843 | /// |
---|
844 | /// Make a copy of the given node. |
---|
845 | GraphCopy& node(TNode& tnode, const Node& snode) { |
---|
846 | nodeMapCopies.push_back(new _graph_utils_bits::ItemCopy<From, Node, |
---|
847 | NodeRefMap, TNode>(tnode, snode)); |
---|
848 | return *this; |
---|
849 | } |
---|
850 | |
---|
851 | /// \brief Copies the edge references into the given map. |
---|
852 | /// |
---|
853 | /// Copies the edge references into the given map. |
---|
854 | template <typename EdgeRef> |
---|
855 | GraphCopy& edgeRef(EdgeRef& map) { |
---|
856 | edgeMapCopies.push_back(new _graph_utils_bits::RefCopy<From, Edge, |
---|
857 | EdgeRefMap, EdgeRef>(map)); |
---|
858 | return *this; |
---|
859 | } |
---|
860 | |
---|
861 | /// \brief Copies the edge cross references into the given map. |
---|
862 | /// |
---|
863 | /// Copies the edge cross references (reverse references) into |
---|
864 | /// the given map. |
---|
865 | template <typename EdgeCrossRef> |
---|
866 | GraphCopy& edgeCrossRef(EdgeCrossRef& map) { |
---|
867 | edgeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<From, Edge, |
---|
868 | EdgeRefMap, EdgeCrossRef>(map)); |
---|
869 | return *this; |
---|
870 | } |
---|
871 | |
---|
872 | /// \brief Make copy of the given map. |
---|
873 | /// |
---|
874 | /// Makes copy of the given map for the newly created graph. |
---|
875 | /// The new map's key type is the to graph's edge type, |
---|
876 | /// and the copied map's key type is the from graph's edge |
---|
877 | /// type. |
---|
878 | template <typename ToMap, typename FromMap> |
---|
879 | GraphCopy& edgeMap(ToMap& tmap, const FromMap& map) { |
---|
880 | edgeMapCopies.push_back(new _graph_utils_bits::MapCopy<From, Edge, |
---|
881 | EdgeRefMap, ToMap, FromMap>(tmap, map)); |
---|
882 | return *this; |
---|
883 | } |
---|
884 | |
---|
885 | /// \brief Make a copy of the given edge. |
---|
886 | /// |
---|
887 | /// Make a copy of the given edge. |
---|
888 | GraphCopy& edge(TEdge& tedge, const Edge& sedge) { |
---|
889 | edgeMapCopies.push_back(new _graph_utils_bits::ItemCopy<From, Edge, |
---|
890 | EdgeRefMap, TEdge>(tedge, sedge)); |
---|
891 | return *this; |
---|
892 | } |
---|
893 | |
---|
894 | /// \brief Executes the copies. |
---|
895 | /// |
---|
896 | /// Executes the copies. |
---|
897 | void run() { |
---|
898 | NodeRefMap nodeRefMap(from); |
---|
899 | EdgeRefMap edgeRefMap(from); |
---|
900 | _graph_utils_bits::GraphCopySelector<To>:: |
---|
901 | copy(to, from, nodeRefMap, edgeRefMap); |
---|
902 | for (int i = 0; i < int(nodeMapCopies.size()); ++i) { |
---|
903 | nodeMapCopies[i]->copy(from, nodeRefMap); |
---|
904 | } |
---|
905 | for (int i = 0; i < int(edgeMapCopies.size()); ++i) { |
---|
906 | edgeMapCopies[i]->copy(from, edgeRefMap); |
---|
907 | } |
---|
908 | } |
---|
909 | |
---|
910 | protected: |
---|
911 | |
---|
912 | |
---|
913 | const From& from; |
---|
914 | To& to; |
---|
915 | |
---|
916 | std::vector<_graph_utils_bits::MapCopyBase<From, Node, NodeRefMap>* > |
---|
917 | nodeMapCopies; |
---|
918 | |
---|
919 | std::vector<_graph_utils_bits::MapCopyBase<From, Edge, EdgeRefMap>* > |
---|
920 | edgeMapCopies; |
---|
921 | |
---|
922 | }; |
---|
923 | |
---|
924 | /// \brief Copy a graph to another graph. |
---|
925 | /// |
---|
926 | /// Copy a graph to another graph. |
---|
927 | /// The usage of the function: |
---|
928 | /// |
---|
929 | ///\code |
---|
930 | /// copyGraph(trg, src).nodeRef(nr).edgeCrossRef(ecr).run(); |
---|
931 | ///\endcode |
---|
932 | /// |
---|
933 | /// After the copy the \c nr map will contain the mapping from the |
---|
934 | /// nodes of the \c from graph to the nodes of the \c to graph and |
---|
935 | /// \c ecr will contain the mapping from the edges of the \c to graph |
---|
936 | /// to the edges of the \c from graph. |
---|
937 | /// |
---|
938 | /// \see GraphCopy |
---|
939 | template <typename To, typename From> |
---|
940 | GraphCopy<To, From> copyGraph(To& to, const From& from) { |
---|
941 | return GraphCopy<To, From>(to, from); |
---|
942 | } |
---|
943 | |
---|
944 | /// \brief Class to copy an undirected graph. |
---|
945 | /// |
---|
946 | /// Class to copy an undirected graph to another graph (duplicate a graph). |
---|
947 | /// The simplest way of using it is through the \c copyUGraph() function. |
---|
948 | template <typename To, typename From> |
---|
949 | class UGraphCopy { |
---|
950 | private: |
---|
951 | |
---|
952 | typedef typename From::Node Node; |
---|
953 | typedef typename From::NodeIt NodeIt; |
---|
954 | typedef typename From::Edge Edge; |
---|
955 | typedef typename From::EdgeIt EdgeIt; |
---|
956 | typedef typename From::UEdge UEdge; |
---|
957 | typedef typename From::UEdgeIt UEdgeIt; |
---|
958 | |
---|
959 | typedef typename To::Node TNode; |
---|
960 | typedef typename To::Edge TEdge; |
---|
961 | typedef typename To::UEdge TUEdge; |
---|
962 | |
---|
963 | typedef typename From::template NodeMap<TNode> NodeRefMap; |
---|
964 | typedef typename From::template UEdgeMap<TUEdge> UEdgeRefMap; |
---|
965 | |
---|
966 | struct EdgeRefMap { |
---|
967 | EdgeRefMap(const To& _to, const From& _from, |
---|
968 | const UEdgeRefMap& _uedge_ref, const NodeRefMap& _node_ref) |
---|
969 | : to(_to), from(_from), |
---|
970 | uedge_ref(_uedge_ref), node_ref(_node_ref) {} |
---|
971 | |
---|
972 | typedef typename From::Edge Key; |
---|
973 | typedef typename To::Edge Value; |
---|
974 | |
---|
975 | Value operator[](const Key& key) const { |
---|
976 | bool forward = |
---|
977 | (from.direction(key) == |
---|
978 | (node_ref[from.source(static_cast<const UEdge&>(key))] == |
---|
979 | to.source(uedge_ref[static_cast<const UEdge&>(key)]))); |
---|
980 | return to.direct(uedge_ref[key], forward); |
---|
981 | } |
---|
982 | |
---|
983 | const To& to; |
---|
984 | const From& from; |
---|
985 | const UEdgeRefMap& uedge_ref; |
---|
986 | const NodeRefMap& node_ref; |
---|
987 | }; |
---|
988 | |
---|
989 | |
---|
990 | public: |
---|
991 | |
---|
992 | |
---|
993 | /// \brief Constructor for the GraphCopy. |
---|
994 | /// |
---|
995 | /// It copies the content of the \c _from graph into the |
---|
996 | /// \c _to graph. |
---|
997 | UGraphCopy(To& _to, const From& _from) |
---|
998 | : from(_from), to(_to) {} |
---|
999 | |
---|
1000 | /// \brief Destructor of the GraphCopy |
---|
1001 | /// |
---|
1002 | /// Destructor of the GraphCopy |
---|
1003 | ~UGraphCopy() { |
---|
1004 | for (int i = 0; i < int(nodeMapCopies.size()); ++i) { |
---|
1005 | delete nodeMapCopies[i]; |
---|
1006 | } |
---|
1007 | for (int i = 0; i < int(edgeMapCopies.size()); ++i) { |
---|
1008 | delete edgeMapCopies[i]; |
---|
1009 | } |
---|
1010 | for (int i = 0; i < int(uEdgeMapCopies.size()); ++i) { |
---|
1011 | delete uEdgeMapCopies[i]; |
---|
1012 | } |
---|
1013 | |
---|
1014 | } |
---|
1015 | |
---|
1016 | /// \brief Copies the node references into the given map. |
---|
1017 | /// |
---|
1018 | /// Copies the node references into the given map. |
---|
1019 | template <typename NodeRef> |
---|
1020 | UGraphCopy& nodeRef(NodeRef& map) { |
---|
1021 | nodeMapCopies.push_back(new _graph_utils_bits::RefCopy<From, Node, |
---|
1022 | NodeRefMap, NodeRef>(map)); |
---|
1023 | return *this; |
---|
1024 | } |
---|
1025 | |
---|
1026 | /// \brief Copies the node cross references into the given map. |
---|
1027 | /// |
---|
1028 | /// Copies the node cross references (reverse references) into |
---|
1029 | /// the given map. |
---|
1030 | template <typename NodeCrossRef> |
---|
1031 | UGraphCopy& nodeCrossRef(NodeCrossRef& map) { |
---|
1032 | nodeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<From, Node, |
---|
1033 | NodeRefMap, NodeCrossRef>(map)); |
---|
1034 | return *this; |
---|
1035 | } |
---|
1036 | |
---|
1037 | /// \brief Make copy of the given map. |
---|
1038 | /// |
---|
1039 | /// Makes copy of the given map for the newly created graph. |
---|
1040 | /// The new map's key type is the to graph's node type, |
---|
1041 | /// and the copied map's key type is the from graph's node |
---|
1042 | /// type. |
---|
1043 | template <typename ToMap, typename FromMap> |
---|
1044 | UGraphCopy& nodeMap(ToMap& tmap, const FromMap& map) { |
---|
1045 | nodeMapCopies.push_back(new _graph_utils_bits::MapCopy<From, Node, |
---|
1046 | NodeRefMap, ToMap, FromMap>(tmap, map)); |
---|
1047 | return *this; |
---|
1048 | } |
---|
1049 | |
---|
1050 | /// \brief Make a copy of the given node. |
---|
1051 | /// |
---|
1052 | /// Make a copy of the given node. |
---|
1053 | UGraphCopy& node(TNode& tnode, const Node& snode) { |
---|
1054 | nodeMapCopies.push_back(new _graph_utils_bits::ItemCopy<From, Node, |
---|
1055 | NodeRefMap, TNode>(tnode, snode)); |
---|
1056 | return *this; |
---|
1057 | } |
---|
1058 | |
---|
1059 | /// \brief Copies the edge references into the given map. |
---|
1060 | /// |
---|
1061 | /// Copies the edge references into the given map. |
---|
1062 | template <typename EdgeRef> |
---|
1063 | UGraphCopy& edgeRef(EdgeRef& map) { |
---|
1064 | edgeMapCopies.push_back(new _graph_utils_bits::RefCopy<From, Edge, |
---|
1065 | EdgeRefMap, EdgeRef>(map)); |
---|
1066 | return *this; |
---|
1067 | } |
---|
1068 | |
---|
1069 | /// \brief Copies the edge cross references into the given map. |
---|
1070 | /// |
---|
1071 | /// Copies the edge cross references (reverse references) into |
---|
1072 | /// the given map. |
---|
1073 | template <typename EdgeCrossRef> |
---|
1074 | UGraphCopy& edgeCrossRef(EdgeCrossRef& map) { |
---|
1075 | edgeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<From, Edge, |
---|
1076 | EdgeRefMap, EdgeCrossRef>(map)); |
---|
1077 | return *this; |
---|
1078 | } |
---|
1079 | |
---|
1080 | /// \brief Make copy of the given map. |
---|
1081 | /// |
---|
1082 | /// Makes copy of the given map for the newly created graph. |
---|
1083 | /// The new map's key type is the to graph's edge type, |
---|
1084 | /// and the copied map's key type is the from graph's edge |
---|
1085 | /// type. |
---|
1086 | template <typename ToMap, typename FromMap> |
---|
1087 | UGraphCopy& edgeMap(ToMap& tmap, const FromMap& map) { |
---|
1088 | edgeMapCopies.push_back(new _graph_utils_bits::MapCopy<From, Edge, |
---|
1089 | EdgeRefMap, ToMap, FromMap>(tmap, map)); |
---|
1090 | return *this; |
---|
1091 | } |
---|
1092 | |
---|
1093 | /// \brief Make a copy of the given edge. |
---|
1094 | /// |
---|
1095 | /// Make a copy of the given edge. |
---|
1096 | UGraphCopy& edge(TEdge& tedge, const Edge& sedge) { |
---|
1097 | edgeMapCopies.push_back(new _graph_utils_bits::ItemCopy<From, Edge, |
---|
1098 | EdgeRefMap, TEdge>(tedge, sedge)); |
---|
1099 | return *this; |
---|
1100 | } |
---|
1101 | |
---|
1102 | /// \brief Copies the undirected edge references into the given map. |
---|
1103 | /// |
---|
1104 | /// Copies the undirected edge references into the given map. |
---|
1105 | template <typename UEdgeRef> |
---|
1106 | UGraphCopy& uEdgeRef(UEdgeRef& map) { |
---|
1107 | uEdgeMapCopies.push_back(new _graph_utils_bits::RefCopy<From, UEdge, |
---|
1108 | UEdgeRefMap, UEdgeRef>(map)); |
---|
1109 | return *this; |
---|
1110 | } |
---|
1111 | |
---|
1112 | /// \brief Copies the undirected edge cross references into the given map. |
---|
1113 | /// |
---|
1114 | /// Copies the undirected edge cross references (reverse |
---|
1115 | /// references) into the given map. |
---|
1116 | template <typename UEdgeCrossRef> |
---|
1117 | UGraphCopy& uEdgeCrossRef(UEdgeCrossRef& map) { |
---|
1118 | uEdgeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<From, |
---|
1119 | UEdge, UEdgeRefMap, UEdgeCrossRef>(map)); |
---|
1120 | return *this; |
---|
1121 | } |
---|
1122 | |
---|
1123 | /// \brief Make copy of the given map. |
---|
1124 | /// |
---|
1125 | /// Makes copy of the given map for the newly created graph. |
---|
1126 | /// The new map's key type is the to graph's undirected edge type, |
---|
1127 | /// and the copied map's key type is the from graph's undirected edge |
---|
1128 | /// type. |
---|
1129 | template <typename ToMap, typename FromMap> |
---|
1130 | UGraphCopy& uEdgeMap(ToMap& tmap, const FromMap& map) { |
---|
1131 | uEdgeMapCopies.push_back(new _graph_utils_bits::MapCopy<From, UEdge, |
---|
1132 | UEdgeRefMap, ToMap, FromMap>(tmap, map)); |
---|
1133 | return *this; |
---|
1134 | } |
---|
1135 | |
---|
1136 | /// \brief Make a copy of the given undirected edge. |
---|
1137 | /// |
---|
1138 | /// Make a copy of the given undirected edge. |
---|
1139 | UGraphCopy& uEdge(TUEdge& tuedge, const UEdge& suedge) { |
---|
1140 | uEdgeMapCopies.push_back(new _graph_utils_bits::ItemCopy<From, UEdge, |
---|
1141 | UEdgeRefMap, TUEdge>(tuedge, suedge)); |
---|
1142 | return *this; |
---|
1143 | } |
---|
1144 | |
---|
1145 | /// \brief Executes the copies. |
---|
1146 | /// |
---|
1147 | /// Executes the copies. |
---|
1148 | void run() { |
---|
1149 | NodeRefMap nodeRefMap(from); |
---|
1150 | UEdgeRefMap uEdgeRefMap(from); |
---|
1151 | EdgeRefMap edgeRefMap(to, from, uEdgeRefMap, nodeRefMap); |
---|
1152 | _graph_utils_bits::UGraphCopySelector<To>:: |
---|
1153 | copy(to, from, nodeRefMap, uEdgeRefMap); |
---|
1154 | for (int i = 0; i < int(nodeMapCopies.size()); ++i) { |
---|
1155 | nodeMapCopies[i]->copy(from, nodeRefMap); |
---|
1156 | } |
---|
1157 | for (int i = 0; i < int(uEdgeMapCopies.size()); ++i) { |
---|
1158 | uEdgeMapCopies[i]->copy(from, uEdgeRefMap); |
---|
1159 | } |
---|
1160 | for (int i = 0; i < int(edgeMapCopies.size()); ++i) { |
---|
1161 | edgeMapCopies[i]->copy(from, edgeRefMap); |
---|
1162 | } |
---|
1163 | } |
---|
1164 | |
---|
1165 | private: |
---|
1166 | |
---|
1167 | const From& from; |
---|
1168 | To& to; |
---|
1169 | |
---|
1170 | std::vector<_graph_utils_bits::MapCopyBase<From, Node, NodeRefMap>* > |
---|
1171 | nodeMapCopies; |
---|
1172 | |
---|
1173 | std::vector<_graph_utils_bits::MapCopyBase<From, Edge, EdgeRefMap>* > |
---|
1174 | edgeMapCopies; |
---|
1175 | |
---|
1176 | std::vector<_graph_utils_bits::MapCopyBase<From, UEdge, UEdgeRefMap>* > |
---|
1177 | uEdgeMapCopies; |
---|
1178 | |
---|
1179 | }; |
---|
1180 | |
---|
1181 | /// \brief Copy an undirected graph to another graph. |
---|
1182 | /// |
---|
1183 | /// Copy an undirected graph to another graph. |
---|
1184 | /// The usage of the function: |
---|
1185 | /// |
---|
1186 | ///\code |
---|
1187 | /// copyUGraph(trg, src).nodeRef(nr).edgeCrossRef(ecr).run(); |
---|
1188 | ///\endcode |
---|
1189 | /// |
---|
1190 | /// After the copy the \c nr map will contain the mapping from the |
---|
1191 | /// nodes of the \c from graph to the nodes of the \c to graph and |
---|
1192 | /// \c ecr will contain the mapping from the edges of the \c to graph |
---|
1193 | /// to the edges of the \c from graph. |
---|
1194 | /// |
---|
1195 | /// \see UGraphCopy |
---|
1196 | template <typename To, typename From> |
---|
1197 | UGraphCopy<To, From> |
---|
1198 | copyUGraph(To& to, const From& from) { |
---|
1199 | return UGraphCopy<To, From>(to, from); |
---|
1200 | } |
---|
1201 | |
---|
1202 | /// \brief Class to copy a bipartite undirected graph. |
---|
1203 | /// |
---|
1204 | /// Class to copy a bipartite undirected graph to another graph |
---|
1205 | /// (duplicate a graph). The simplest way of using it is through |
---|
1206 | /// the \c copyBpUGraph() function. |
---|
1207 | template <typename To, typename From> |
---|
1208 | class BpUGraphCopy { |
---|
1209 | private: |
---|
1210 | |
---|
1211 | typedef typename From::Node Node; |
---|
1212 | typedef typename From::ANode ANode; |
---|
1213 | typedef typename From::BNode BNode; |
---|
1214 | typedef typename From::NodeIt NodeIt; |
---|
1215 | typedef typename From::Edge Edge; |
---|
1216 | typedef typename From::EdgeIt EdgeIt; |
---|
1217 | typedef typename From::UEdge UEdge; |
---|
1218 | typedef typename From::UEdgeIt UEdgeIt; |
---|
1219 | |
---|
1220 | typedef typename To::Node TNode; |
---|
1221 | typedef typename To::Edge TEdge; |
---|
1222 | typedef typename To::UEdge TUEdge; |
---|
1223 | |
---|
1224 | typedef typename From::template ANodeMap<TNode> ANodeRefMap; |
---|
1225 | typedef typename From::template BNodeMap<TNode> BNodeRefMap; |
---|
1226 | typedef typename From::template UEdgeMap<TUEdge> UEdgeRefMap; |
---|
1227 | |
---|
1228 | struct NodeRefMap { |
---|
1229 | NodeRefMap(const From& _from, const ANodeRefMap& _anode_ref, |
---|
1230 | const BNodeRefMap& _bnode_ref) |
---|
1231 | : from(_from), anode_ref(_anode_ref), bnode_ref(_bnode_ref) {} |
---|
1232 | |
---|
1233 | typedef typename From::Node Key; |
---|
1234 | typedef typename To::Node Value; |
---|
1235 | |
---|
1236 | Value operator[](const Key& key) const { |
---|
1237 | return from.aNode(key) ? anode_ref[key] : bnode_ref[key]; |
---|
1238 | } |
---|
1239 | |
---|
1240 | const From& from; |
---|
1241 | const ANodeRefMap& anode_ref; |
---|
1242 | const BNodeRefMap& bnode_ref; |
---|
1243 | }; |
---|
1244 | |
---|
1245 | struct EdgeRefMap { |
---|
1246 | EdgeRefMap(const To& _to, const From& _from, |
---|
1247 | const UEdgeRefMap& _uedge_ref, const NodeRefMap& _node_ref) |
---|
1248 | : to(_to), from(_from), |
---|
1249 | uedge_ref(_uedge_ref), node_ref(_node_ref) {} |
---|
1250 | |
---|
1251 | typedef typename From::Edge Key; |
---|
1252 | typedef typename To::Edge Value; |
---|
1253 | |
---|
1254 | Value operator[](const Key& key) const { |
---|
1255 | bool forward = |
---|
1256 | (from.direction(key) == |
---|
1257 | (node_ref[from.source(static_cast<const UEdge&>(key))] == |
---|
1258 | to.source(uedge_ref[static_cast<const UEdge&>(key)]))); |
---|
1259 | return to.direct(uedge_ref[key], forward); |
---|
1260 | } |
---|
1261 | |
---|
1262 | const To& to; |
---|
1263 | const From& from; |
---|
1264 | const UEdgeRefMap& uedge_ref; |
---|
1265 | const NodeRefMap& node_ref; |
---|
1266 | }; |
---|
1267 | |
---|
1268 | public: |
---|
1269 | |
---|
1270 | |
---|
1271 | /// \brief Constructor for the GraphCopy. |
---|
1272 | /// |
---|
1273 | /// It copies the content of the \c _from graph into the |
---|
1274 | /// \c _to graph. |
---|
1275 | BpUGraphCopy(To& _to, const From& _from) |
---|
1276 | : from(_from), to(_to) {} |
---|
1277 | |
---|
1278 | /// \brief Destructor of the GraphCopy |
---|
1279 | /// |
---|
1280 | /// Destructor of the GraphCopy |
---|
1281 | ~BpUGraphCopy() { |
---|
1282 | for (int i = 0; i < int(aNodeMapCopies.size()); ++i) { |
---|
1283 | delete aNodeMapCopies[i]; |
---|
1284 | } |
---|
1285 | for (int i = 0; i < int(bNodeMapCopies.size()); ++i) { |
---|
1286 | delete bNodeMapCopies[i]; |
---|
1287 | } |
---|
1288 | for (int i = 0; i < int(nodeMapCopies.size()); ++i) { |
---|
1289 | delete nodeMapCopies[i]; |
---|
1290 | } |
---|
1291 | for (int i = 0; i < int(edgeMapCopies.size()); ++i) { |
---|
1292 | delete edgeMapCopies[i]; |
---|
1293 | } |
---|
1294 | for (int i = 0; i < int(uEdgeMapCopies.size()); ++i) { |
---|
1295 | delete uEdgeMapCopies[i]; |
---|
1296 | } |
---|
1297 | |
---|
1298 | } |
---|
1299 | |
---|
1300 | /// \brief Copies the A-node references into the given map. |
---|
1301 | /// |
---|
1302 | /// Copies the A-node references into the given map. |
---|
1303 | template <typename ANodeRef> |
---|
1304 | BpUGraphCopy& aNodeRef(ANodeRef& map) { |
---|
1305 | aNodeMapCopies.push_back(new _graph_utils_bits::RefCopy<From, ANode, |
---|
1306 | ANodeRefMap, ANodeRef>(map)); |
---|
1307 | return *this; |
---|
1308 | } |
---|
1309 | |
---|
1310 | /// \brief Copies the A-node cross references into the given map. |
---|
1311 | /// |
---|
1312 | /// Copies the A-node cross references (reverse references) into |
---|
1313 | /// the given map. |
---|
1314 | template <typename ANodeCrossRef> |
---|
1315 | BpUGraphCopy& aNodeCrossRef(ANodeCrossRef& map) { |
---|
1316 | aNodeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<From, |
---|
1317 | ANode, ANodeRefMap, ANodeCrossRef>(map)); |
---|
1318 | return *this; |
---|
1319 | } |
---|
1320 | |
---|
1321 | /// \brief Make copy of the given A-node map. |
---|
1322 | /// |
---|
1323 | /// Makes copy of the given map for the newly created graph. |
---|
1324 | /// The new map's key type is the to graph's node type, |
---|
1325 | /// and the copied map's key type is the from graph's node |
---|
1326 | /// type. |
---|
1327 | template <typename ToMap, typename FromMap> |
---|
1328 | BpUGraphCopy& aNodeMap(ToMap& tmap, const FromMap& map) { |
---|
1329 | aNodeMapCopies.push_back(new _graph_utils_bits::MapCopy<From, ANode, |
---|
1330 | ANodeRefMap, ToMap, FromMap>(tmap, map)); |
---|
1331 | return *this; |
---|
1332 | } |
---|
1333 | |
---|
1334 | /// \brief Copies the B-node references into the given map. |
---|
1335 | /// |
---|
1336 | /// Copies the B-node references into the given map. |
---|
1337 | template <typename BNodeRef> |
---|
1338 | BpUGraphCopy& bNodeRef(BNodeRef& map) { |
---|
1339 | bNodeMapCopies.push_back(new _graph_utils_bits::RefCopy<From, BNode, |
---|
1340 | BNodeRefMap, BNodeRef>(map)); |
---|
1341 | return *this; |
---|
1342 | } |
---|
1343 | |
---|
1344 | /// \brief Copies the B-node cross references into the given map. |
---|
1345 | /// |
---|
1346 | /// Copies the B-node cross references (reverse references) into |
---|
1347 | /// the given map. |
---|
1348 | template <typename BNodeCrossRef> |
---|
1349 | BpUGraphCopy& bNodeCrossRef(BNodeCrossRef& map) { |
---|
1350 | bNodeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<From, |
---|
1351 | BNode, BNodeRefMap, BNodeCrossRef>(map)); |
---|
1352 | return *this; |
---|
1353 | } |
---|
1354 | |
---|
1355 | /// \brief Make copy of the given B-node map. |
---|
1356 | /// |
---|
1357 | /// Makes copy of the given map for the newly created graph. |
---|
1358 | /// The new map's key type is the to graph's node type, |
---|
1359 | /// and the copied map's key type is the from graph's node |
---|
1360 | /// type. |
---|
1361 | template <typename ToMap, typename FromMap> |
---|
1362 | BpUGraphCopy& bNodeMap(ToMap& tmap, const FromMap& map) { |
---|
1363 | bNodeMapCopies.push_back(new _graph_utils_bits::MapCopy<From, BNode, |
---|
1364 | BNodeRefMap, ToMap, FromMap>(tmap, map)); |
---|
1365 | return *this; |
---|
1366 | } |
---|
1367 | /// \brief Copies the node references into the given map. |
---|
1368 | /// |
---|
1369 | /// Copies the node references into the given map. |
---|
1370 | template <typename NodeRef> |
---|
1371 | BpUGraphCopy& nodeRef(NodeRef& map) { |
---|
1372 | nodeMapCopies.push_back(new _graph_utils_bits::RefCopy<From, Node, |
---|
1373 | NodeRefMap, NodeRef>(map)); |
---|
1374 | return *this; |
---|
1375 | } |
---|
1376 | |
---|
1377 | /// \brief Copies the node cross references into the given map. |
---|
1378 | /// |
---|
1379 | /// Copies the node cross references (reverse references) into |
---|
1380 | /// the given map. |
---|
1381 | template <typename NodeCrossRef> |
---|
1382 | BpUGraphCopy& nodeCrossRef(NodeCrossRef& map) { |
---|
1383 | nodeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<From, Node, |
---|
1384 | NodeRefMap, NodeCrossRef>(map)); |
---|
1385 | return *this; |
---|
1386 | } |
---|
1387 | |
---|
1388 | /// \brief Make copy of the given map. |
---|
1389 | /// |
---|
1390 | /// Makes copy of the given map for the newly created graph. |
---|
1391 | /// The new map's key type is the to graph's node type, |
---|
1392 | /// and the copied map's key type is the from graph's node |
---|
1393 | /// type. |
---|
1394 | template <typename ToMap, typename FromMap> |
---|
1395 | BpUGraphCopy& nodeMap(ToMap& tmap, const FromMap& map) { |
---|
1396 | nodeMapCopies.push_back(new _graph_utils_bits::MapCopy<From, Node, |
---|
1397 | NodeRefMap, ToMap, FromMap>(tmap, map)); |
---|
1398 | return *this; |
---|
1399 | } |
---|
1400 | |
---|
1401 | /// \brief Make a copy of the given node. |
---|
1402 | /// |
---|
1403 | /// Make a copy of the given node. |
---|
1404 | BpUGraphCopy& node(TNode& tnode, const Node& snode) { |
---|
1405 | nodeMapCopies.push_back(new _graph_utils_bits::ItemCopy<From, Node, |
---|
1406 | NodeRefMap, TNode>(tnode, snode)); |
---|
1407 | return *this; |
---|
1408 | } |
---|
1409 | |
---|
1410 | /// \brief Copies the edge references into the given map. |
---|
1411 | /// |
---|
1412 | /// Copies the edge references into the given map. |
---|
1413 | template <typename EdgeRef> |
---|
1414 | BpUGraphCopy& edgeRef(EdgeRef& map) { |
---|
1415 | edgeMapCopies.push_back(new _graph_utils_bits::RefCopy<From, Edge, |
---|
1416 | EdgeRefMap, EdgeRef>(map)); |
---|
1417 | return *this; |
---|
1418 | } |
---|
1419 | |
---|
1420 | /// \brief Copies the edge cross references into the given map. |
---|
1421 | /// |
---|
1422 | /// Copies the edge cross references (reverse references) into |
---|
1423 | /// the given map. |
---|
1424 | template <typename EdgeCrossRef> |
---|
1425 | BpUGraphCopy& edgeCrossRef(EdgeCrossRef& map) { |
---|
1426 | edgeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<From, Edge, |
---|
1427 | EdgeRefMap, EdgeCrossRef>(map)); |
---|
1428 | return *this; |
---|
1429 | } |
---|
1430 | |
---|
1431 | /// \brief Make copy of the given map. |
---|
1432 | /// |
---|
1433 | /// Makes copy of the given map for the newly created graph. |
---|
1434 | /// The new map's key type is the to graph's edge type, |
---|
1435 | /// and the copied map's key type is the from graph's edge |
---|
1436 | /// type. |
---|
1437 | template <typename ToMap, typename FromMap> |
---|
1438 | BpUGraphCopy& edgeMap(ToMap& tmap, const FromMap& map) { |
---|
1439 | edgeMapCopies.push_back(new _graph_utils_bits::MapCopy<From, Edge, |
---|
1440 | EdgeRefMap, ToMap, FromMap>(tmap, map)); |
---|
1441 | return *this; |
---|
1442 | } |
---|
1443 | |
---|
1444 | /// \brief Make a copy of the given edge. |
---|
1445 | /// |
---|
1446 | /// Make a copy of the given edge. |
---|
1447 | BpUGraphCopy& edge(TEdge& tedge, const Edge& sedge) { |
---|
1448 | edgeMapCopies.push_back(new _graph_utils_bits::ItemCopy<From, Edge, |
---|
1449 | EdgeRefMap, TEdge>(tedge, sedge)); |
---|
1450 | return *this; |
---|
1451 | } |
---|
1452 | |
---|
1453 | /// \brief Copies the undirected edge references into the given map. |
---|
1454 | /// |
---|
1455 | /// Copies the undirected edge references into the given map. |
---|
1456 | template <typename UEdgeRef> |
---|
1457 | BpUGraphCopy& uEdgeRef(UEdgeRef& map) { |
---|
1458 | uEdgeMapCopies.push_back(new _graph_utils_bits::RefCopy<From, UEdge, |
---|
1459 | UEdgeRefMap, UEdgeRef>(map)); |
---|
1460 | return *this; |
---|
1461 | } |
---|
1462 | |
---|
1463 | /// \brief Copies the undirected edge cross references into the given map. |
---|
1464 | /// |
---|
1465 | /// Copies the undirected edge cross references (reverse |
---|
1466 | /// references) into the given map. |
---|
1467 | template <typename UEdgeCrossRef> |
---|
1468 | BpUGraphCopy& uEdgeCrossRef(UEdgeCrossRef& map) { |
---|
1469 | uEdgeMapCopies.push_back(new _graph_utils_bits::CrossRefCopy<From, |
---|
1470 | UEdge, UEdgeRefMap, UEdgeCrossRef>(map)); |
---|
1471 | return *this; |
---|
1472 | } |
---|
1473 | |
---|
1474 | /// \brief Make copy of the given map. |
---|
1475 | /// |
---|
1476 | /// Makes copy of the given map for the newly created graph. |
---|
1477 | /// The new map's key type is the to graph's undirected edge type, |
---|
1478 | /// and the copied map's key type is the from graph's undirected edge |
---|
1479 | /// type. |
---|
1480 | template <typename ToMap, typename FromMap> |
---|
1481 | BpUGraphCopy& uEdgeMap(ToMap& tmap, const FromMap& map) { |
---|
1482 | uEdgeMapCopies.push_back(new _graph_utils_bits::MapCopy<From, UEdge, |
---|
1483 | UEdgeRefMap, ToMap, FromMap>(tmap, map)); |
---|
1484 | return *this; |
---|
1485 | } |
---|
1486 | |
---|
1487 | /// \brief Make a copy of the given undirected edge. |
---|
1488 | /// |
---|
1489 | /// Make a copy of the given undirected edge. |
---|
1490 | BpUGraphCopy& uEdge(TUEdge& tuedge, const UEdge& suedge) { |
---|
1491 | uEdgeMapCopies.push_back(new _graph_utils_bits::ItemCopy<From, UEdge, |
---|
1492 | UEdgeRefMap, TUEdge>(tuedge, suedge)); |
---|
1493 | return *this; |
---|
1494 | } |
---|
1495 | |
---|
1496 | /// \brief Executes the copies. |
---|
1497 | /// |
---|
1498 | /// Executes the copies. |
---|
1499 | void run() { |
---|
1500 | ANodeRefMap aNodeRefMap(from); |
---|
1501 | BNodeRefMap bNodeRefMap(from); |
---|
1502 | NodeRefMap nodeRefMap(from, aNodeRefMap, bNodeRefMap); |
---|
1503 | UEdgeRefMap uEdgeRefMap(from); |
---|
1504 | EdgeRefMap edgeRefMap(to, from, uEdgeRefMap, nodeRefMap); |
---|
1505 | _graph_utils_bits::BpUGraphCopySelector<To>:: |
---|
1506 | copy(to, from, aNodeRefMap, bNodeRefMap, uEdgeRefMap); |
---|
1507 | for (int i = 0; i < int(aNodeMapCopies.size()); ++i) { |
---|
1508 | aNodeMapCopies[i]->copy(from, aNodeRefMap); |
---|
1509 | } |
---|
1510 | for (int i = 0; i < int(bNodeMapCopies.size()); ++i) { |
---|
1511 | bNodeMapCopies[i]->copy(from, bNodeRefMap); |
---|
1512 | } |
---|
1513 | for (int i = 0; i < int(nodeMapCopies.size()); ++i) { |
---|
1514 | nodeMapCopies[i]->copy(from, nodeRefMap); |
---|
1515 | } |
---|
1516 | for (int i = 0; i < int(uEdgeMapCopies.size()); ++i) { |
---|
1517 | uEdgeMapCopies[i]->copy(from, uEdgeRefMap); |
---|
1518 | } |
---|
1519 | for (int i = 0; i < int(edgeMapCopies.size()); ++i) { |
---|
1520 | edgeMapCopies[i]->copy(from, edgeRefMap); |
---|
1521 | } |
---|
1522 | } |
---|
1523 | |
---|
1524 | private: |
---|
1525 | |
---|
1526 | const From& from; |
---|
1527 | To& to; |
---|
1528 | |
---|
1529 | std::vector<_graph_utils_bits::MapCopyBase<From, ANode, ANodeRefMap>* > |
---|
1530 | aNodeMapCopies; |
---|
1531 | |
---|
1532 | std::vector<_graph_utils_bits::MapCopyBase<From, BNode, BNodeRefMap>* > |
---|
1533 | bNodeMapCopies; |
---|
1534 | |
---|
1535 | std::vector<_graph_utils_bits::MapCopyBase<From, Node, NodeRefMap>* > |
---|
1536 | nodeMapCopies; |
---|
1537 | |
---|
1538 | std::vector<_graph_utils_bits::MapCopyBase<From, Edge, EdgeRefMap>* > |
---|
1539 | edgeMapCopies; |
---|
1540 | |
---|
1541 | std::vector<_graph_utils_bits::MapCopyBase<From, UEdge, UEdgeRefMap>* > |
---|
1542 | uEdgeMapCopies; |
---|
1543 | |
---|
1544 | }; |
---|
1545 | |
---|
1546 | /// \brief Copy a bipartite undirected graph to another graph. |
---|
1547 | /// |
---|
1548 | /// Copy a bipartite undirected graph to another graph. |
---|
1549 | /// The usage of the function: |
---|
1550 | /// |
---|
1551 | ///\code |
---|
1552 | /// copyBpUGraph(trg, src).aNodeRef(anr).edgeCrossRef(ecr).run(); |
---|
1553 | ///\endcode |
---|
1554 | /// |
---|
1555 | /// After the copy the \c nr map will contain the mapping from the |
---|
1556 | /// nodes of the \c from graph to the nodes of the \c to graph and |
---|
1557 | /// \c ecr will contain the mapping from the edges of the \c to graph |
---|
1558 | /// to the edges of the \c from graph. |
---|
1559 | /// |
---|
1560 | /// \see BpUGraphCopy |
---|
1561 | template <typename To, typename From> |
---|
1562 | BpUGraphCopy<To, From> |
---|
1563 | copyBpUGraph(To& to, const From& from) { |
---|
1564 | return BpUGraphCopy<To, From>(to, from); |
---|
1565 | } |
---|
1566 | |
---|
1567 | |
---|
1568 | /// @} |
---|
1569 | |
---|
1570 | /// \addtogroup graph_maps |
---|
1571 | /// @{ |
---|
1572 | |
---|
1573 | /// Provides an immutable and unique id for each item in the graph. |
---|
1574 | |
---|
1575 | /// The IdMap class provides a unique and immutable id for each item of the |
---|
1576 | /// same type (e.g. node) in the graph. This id is <ul><li>\b unique: |
---|
1577 | /// different items (nodes) get different ids <li>\b immutable: the id of an |
---|
1578 | /// item (node) does not change (even if you delete other nodes). </ul> |
---|
1579 | /// Through this map you get access (i.e. can read) the inner id values of |
---|
1580 | /// the items stored in the graph. This map can be inverted with its member |
---|
1581 | /// class \c InverseMap. |
---|
1582 | /// |
---|
1583 | template <typename _Graph, typename _Item> |
---|
1584 | class IdMap { |
---|
1585 | public: |
---|
1586 | typedef _Graph Graph; |
---|
1587 | typedef int Value; |
---|
1588 | typedef _Item Item; |
---|
1589 | typedef _Item Key; |
---|
1590 | |
---|
1591 | /// \brief Constructor. |
---|
1592 | /// |
---|
1593 | /// Constructor of the map. |
---|
1594 | explicit IdMap(const Graph& _graph) : graph(&_graph) {} |
---|
1595 | |
---|
1596 | /// \brief Gives back the \e id of the item. |
---|
1597 | /// |
---|
1598 | /// Gives back the immutable and unique \e id of the item. |
---|
1599 | int operator[](const Item& item) const { return graph->id(item);} |
---|
1600 | |
---|
1601 | /// \brief Gives back the item by its id. |
---|
1602 | /// |
---|
1603 | /// Gives back the item by its id. |
---|
1604 | Item operator()(int id) { return graph->fromId(id, Item()); } |
---|
1605 | |
---|
1606 | private: |
---|
1607 | const Graph* graph; |
---|
1608 | |
---|
1609 | public: |
---|
1610 | |
---|
1611 | /// \brief The class represents the inverse of its owner (IdMap). |
---|
1612 | /// |
---|
1613 | /// The class represents the inverse of its owner (IdMap). |
---|
1614 | /// \see inverse() |
---|
1615 | class InverseMap { |
---|
1616 | public: |
---|
1617 | |
---|
1618 | /// \brief Constructor. |
---|
1619 | /// |
---|
1620 | /// Constructor for creating an id-to-item map. |
---|
1621 | explicit InverseMap(const Graph& _graph) : graph(&_graph) {} |
---|
1622 | |
---|
1623 | /// \brief Constructor. |
---|
1624 | /// |
---|
1625 | /// Constructor for creating an id-to-item map. |
---|
1626 | explicit InverseMap(const IdMap& idMap) : graph(idMap.graph) {} |
---|
1627 | |
---|
1628 | /// \brief Gives back the given item from its id. |
---|
1629 | /// |
---|
1630 | /// Gives back the given item from its id. |
---|
1631 | /// |
---|
1632 | Item operator[](int id) const { return graph->fromId(id, Item());} |
---|
1633 | |
---|
1634 | private: |
---|
1635 | const Graph* graph; |
---|
1636 | }; |
---|
1637 | |
---|
1638 | /// \brief Gives back the inverse of the map. |
---|
1639 | /// |
---|
1640 | /// Gives back the inverse of the IdMap. |
---|
1641 | InverseMap inverse() const { return InverseMap(*graph);} |
---|
1642 | |
---|
1643 | }; |
---|
1644 | |
---|
1645 | |
---|
1646 | /// \brief General invertable graph-map type. |
---|
1647 | |
---|
1648 | /// This type provides simple invertable graph-maps. |
---|
1649 | /// The InvertableMap wraps an arbitrary ReadWriteMap |
---|
1650 | /// and if a key is set to a new value then store it |
---|
1651 | /// in the inverse map. |
---|
1652 | /// |
---|
1653 | /// The values of the map can be accessed |
---|
1654 | /// with stl compatible forward iterator. |
---|
1655 | /// |
---|
1656 | /// \param _Graph The graph type. |
---|
1657 | /// \param _Item The item type of the graph. |
---|
1658 | /// \param _Value The value type of the map. |
---|
1659 | /// |
---|
1660 | /// \see IterableValueMap |
---|
1661 | template <typename _Graph, typename _Item, typename _Value> |
---|
1662 | class InvertableMap : protected DefaultMap<_Graph, _Item, _Value> { |
---|
1663 | private: |
---|
1664 | |
---|
1665 | typedef DefaultMap<_Graph, _Item, _Value> Map; |
---|
1666 | typedef _Graph Graph; |
---|
1667 | |
---|
1668 | typedef std::map<_Value, _Item> Container; |
---|
1669 | Container invMap; |
---|
1670 | |
---|
1671 | public: |
---|
1672 | |
---|
1673 | /// The key type of InvertableMap (Node, Edge, UEdge). |
---|
1674 | typedef typename Map::Key Key; |
---|
1675 | /// The value type of the InvertableMap. |
---|
1676 | typedef typename Map::Value Value; |
---|
1677 | |
---|
1678 | |
---|
1679 | |
---|
1680 | /// \brief Constructor. |
---|
1681 | /// |
---|
1682 | /// Construct a new InvertableMap for the graph. |
---|
1683 | /// |
---|
1684 | explicit InvertableMap(const Graph& graph) : Map(graph) {} |
---|
1685 | |
---|
1686 | /// \brief Forward iterator for values. |
---|
1687 | /// |
---|
1688 | /// This iterator is an stl compatible forward |
---|
1689 | /// iterator on the values of the map. The values can |
---|
1690 | /// be accessed in the [beginValue, endValue) range. |
---|
1691 | /// |
---|
1692 | class ValueIterator |
---|
1693 | : public std::iterator<std::forward_iterator_tag, Value> { |
---|
1694 | friend class InvertableMap; |
---|
1695 | private: |
---|
1696 | ValueIterator(typename Container::const_iterator _it) |
---|
1697 | : it(_it) {} |
---|
1698 | public: |
---|
1699 | |
---|
1700 | ValueIterator() {} |
---|
1701 | |
---|
1702 | ValueIterator& operator++() { ++it; return *this; } |
---|
1703 | ValueIterator operator++(int) { |
---|
1704 | ValueIterator tmp(*this); |
---|
1705 | operator++(); |
---|
1706 | return tmp; |
---|
1707 | } |
---|
1708 | |
---|
1709 | const Value& operator*() const { return it->first; } |
---|
1710 | const Value* operator->() const { return &(it->first); } |
---|
1711 | |
---|
1712 | bool operator==(ValueIterator jt) const { return it == jt.it; } |
---|
1713 | bool operator!=(ValueIterator jt) const { return it != jt.it; } |
---|
1714 | |
---|
1715 | private: |
---|
1716 | typename Container::const_iterator it; |
---|
1717 | }; |
---|
1718 | |
---|
1719 | /// \brief Returns an iterator to the first value. |
---|
1720 | /// |
---|
1721 | /// Returns an stl compatible iterator to the |
---|
1722 | /// first value of the map. The values of the |
---|
1723 | /// map can be accessed in the [beginValue, endValue) |
---|
1724 | /// range. |
---|
1725 | ValueIterator beginValue() const { |
---|
1726 | return ValueIterator(invMap.begin()); |
---|
1727 | } |
---|
1728 | |
---|
1729 | /// \brief Returns an iterator after the last value. |
---|
1730 | /// |
---|
1731 | /// Returns an stl compatible iterator after the |
---|
1732 | /// last value of the map. The values of the |
---|
1733 | /// map can be accessed in the [beginValue, endValue) |
---|
1734 | /// range. |
---|
1735 | ValueIterator endValue() const { |
---|
1736 | return ValueIterator(invMap.end()); |
---|
1737 | } |
---|
1738 | |
---|
1739 | /// \brief The setter function of the map. |
---|
1740 | /// |
---|
1741 | /// Sets the mapped value. |
---|
1742 | void set(const Key& key, const Value& val) { |
---|
1743 | Value oldval = Map::operator[](key); |
---|
1744 | typename Container::iterator it = invMap.find(oldval); |
---|
1745 | if (it != invMap.end() && it->second == key) { |
---|
1746 | invMap.erase(it); |
---|
1747 | } |
---|
1748 | invMap.insert(make_pair(val, key)); |
---|
1749 | Map::set(key, val); |
---|
1750 | } |
---|
1751 | |
---|
1752 | /// \brief The getter function of the map. |
---|
1753 | /// |
---|
1754 | /// It gives back the value associated with the key. |
---|
1755 | typename MapTraits<Map>::ConstReturnValue |
---|
1756 | operator[](const Key& key) const { |
---|
1757 | return Map::operator[](key); |
---|
1758 | } |
---|
1759 | |
---|
1760 | /// \brief Gives back the item by its value. |
---|
1761 | /// |
---|
1762 | /// Gives back the item by its value. |
---|
1763 | Key operator()(const Value& key) const { |
---|
1764 | typename Container::const_iterator it = invMap.find(key); |
---|
1765 | return it != invMap.end() ? it->second : INVALID; |
---|
1766 | } |
---|
1767 | |
---|
1768 | protected: |
---|
1769 | |
---|
1770 | /// \brief Erase the key from the map. |
---|
1771 | /// |
---|
1772 | /// Erase the key to the map. It is called by the |
---|
1773 | /// \c AlterationNotifier. |
---|
1774 | virtual void erase(const Key& key) { |
---|
1775 | Value val = Map::operator[](key); |
---|
1776 | typename Container::iterator it = invMap.find(val); |
---|
1777 | if (it != invMap.end() && it->second == key) { |
---|
1778 | invMap.erase(it); |
---|
1779 | } |
---|
1780 | Map::erase(key); |
---|
1781 | } |
---|
1782 | |
---|
1783 | /// \brief Erase more keys from the map. |
---|
1784 | /// |
---|
1785 | /// Erase more keys from the map. It is called by the |
---|
1786 | /// \c AlterationNotifier. |
---|
1787 | virtual void erase(const std::vector<Key>& keys) { |
---|
1788 | for (int i = 0; i < int(keys.size()); ++i) { |
---|
1789 | Value val = Map::operator[](keys[i]); |
---|
1790 | typename Container::iterator it = invMap.find(val); |
---|
1791 | if (it != invMap.end() && it->second == keys[i]) { |
---|
1792 | invMap.erase(it); |
---|
1793 | } |
---|
1794 | } |
---|
1795 | Map::erase(keys); |
---|
1796 | } |
---|
1797 | |
---|
1798 | /// \brief Clear the keys from the map and inverse map. |
---|
1799 | /// |
---|
1800 | /// Clear the keys from the map and inverse map. It is called by the |
---|
1801 | /// \c AlterationNotifier. |
---|
1802 | virtual void clear() { |
---|
1803 | invMap.clear(); |
---|
1804 | Map::clear(); |
---|
1805 | } |
---|
1806 | |
---|
1807 | public: |
---|
1808 | |
---|
1809 | /// \brief The inverse map type. |
---|
1810 | /// |
---|
1811 | /// The inverse of this map. The subscript operator of the map |
---|
1812 | /// gives back always the item what was last assigned to the value. |
---|
1813 | class InverseMap { |
---|
1814 | public: |
---|
1815 | /// \brief Constructor of the InverseMap. |
---|
1816 | /// |
---|
1817 | /// Constructor of the InverseMap. |
---|
1818 | explicit InverseMap(const InvertableMap& _inverted) |
---|
1819 | : inverted(_inverted) {} |
---|
1820 | |
---|
1821 | /// The value type of the InverseMap. |
---|
1822 | typedef typename InvertableMap::Key Value; |
---|
1823 | /// The key type of the InverseMap. |
---|
1824 | typedef typename InvertableMap::Value Key; |
---|
1825 | |
---|
1826 | /// \brief Subscript operator. |
---|
1827 | /// |
---|
1828 | /// Subscript operator. It gives back always the item |
---|
1829 | /// what was last assigned to the value. |
---|
1830 | Value operator[](const Key& key) const { |
---|
1831 | return inverted(key); |
---|
1832 | } |
---|
1833 | |
---|
1834 | private: |
---|
1835 | const InvertableMap& inverted; |
---|
1836 | }; |
---|
1837 | |
---|
1838 | /// \brief It gives back the just readable inverse map. |
---|
1839 | /// |
---|
1840 | /// It gives back the just readable inverse map. |
---|
1841 | InverseMap inverse() const { |
---|
1842 | return InverseMap(*this); |
---|
1843 | } |
---|
1844 | |
---|
1845 | |
---|
1846 | |
---|
1847 | }; |
---|
1848 | |
---|
1849 | /// \brief Provides a mutable, continuous and unique descriptor for each |
---|
1850 | /// item in the graph. |
---|
1851 | /// |
---|
1852 | /// The DescriptorMap class provides a unique and continuous (but mutable) |
---|
1853 | /// descriptor (id) for each item of the same type (e.g. node) in the |
---|
1854 | /// graph. This id is <ul><li>\b unique: different items (nodes) get |
---|
1855 | /// different ids <li>\b continuous: the range of the ids is the set of |
---|
1856 | /// integers between 0 and \c n-1, where \c n is the number of the items of |
---|
1857 | /// this type (e.g. nodes) (so the id of a node can change if you delete an |
---|
1858 | /// other node, i.e. this id is mutable). </ul> This map can be inverted |
---|
1859 | /// with its member class \c InverseMap. |
---|
1860 | /// |
---|
1861 | /// \param _Graph The graph class the \c DescriptorMap belongs to. |
---|
1862 | /// \param _Item The Item is the Key of the Map. It may be Node, Edge or |
---|
1863 | /// UEdge. |
---|
1864 | template <typename _Graph, typename _Item> |
---|
1865 | class DescriptorMap : protected DefaultMap<_Graph, _Item, int> { |
---|
1866 | |
---|
1867 | typedef _Item Item; |
---|
1868 | typedef DefaultMap<_Graph, _Item, int> Map; |
---|
1869 | |
---|
1870 | public: |
---|
1871 | /// The graph class of DescriptorMap. |
---|
1872 | typedef _Graph Graph; |
---|
1873 | |
---|
1874 | /// The key type of DescriptorMap (Node, Edge, UEdge). |
---|
1875 | typedef typename Map::Key Key; |
---|
1876 | /// The value type of DescriptorMap. |
---|
1877 | typedef typename Map::Value Value; |
---|
1878 | |
---|
1879 | /// \brief Constructor. |
---|
1880 | /// |
---|
1881 | /// Constructor for descriptor map. |
---|
1882 | explicit DescriptorMap(const Graph& _graph) : Map(_graph) { |
---|
1883 | Item it; |
---|
1884 | const typename Map::Notifier* nf = Map::notifier(); |
---|
1885 | for (nf->first(it); it != INVALID; nf->next(it)) { |
---|
1886 | Map::set(it, invMap.size()); |
---|
1887 | invMap.push_back(it); |
---|
1888 | } |
---|
1889 | } |
---|
1890 | |
---|
1891 | protected: |
---|
1892 | |
---|
1893 | /// \brief Add a new key to the map. |
---|
1894 | /// |
---|
1895 | /// Add a new key to the map. It is called by the |
---|
1896 | /// \c AlterationNotifier. |
---|
1897 | virtual void add(const Item& item) { |
---|
1898 | Map::add(item); |
---|
1899 | Map::set(item, invMap.size()); |
---|
1900 | invMap.push_back(item); |
---|
1901 | } |
---|
1902 | |
---|
1903 | /// \brief Add more new keys to the map. |
---|
1904 | /// |
---|
1905 | /// Add more new keys to the map. It is called by the |
---|
1906 | /// \c AlterationNotifier. |
---|
1907 | virtual void add(const std::vector<Item>& items) { |
---|
1908 | Map::add(items); |
---|
1909 | for (int i = 0; i < int(items.size()); ++i) { |
---|
1910 | Map::set(items[i], invMap.size()); |
---|
1911 | invMap.push_back(items[i]); |
---|
1912 | } |
---|
1913 | } |
---|
1914 | |
---|
1915 | /// \brief Erase the key from the map. |
---|
1916 | /// |
---|
1917 | /// Erase the key from the map. It is called by the |
---|
1918 | /// \c AlterationNotifier. |
---|
1919 | virtual void erase(const Item& item) { |
---|
1920 | Map::set(invMap.back(), Map::operator[](item)); |
---|
1921 | invMap[Map::operator[](item)] = invMap.back(); |
---|
1922 | invMap.pop_back(); |
---|
1923 | Map::erase(item); |
---|
1924 | } |
---|
1925 | |
---|
1926 | /// \brief Erase more keys from the map. |
---|
1927 | /// |
---|
1928 | /// Erase more keys from the map. It is called by the |
---|
1929 | /// \c AlterationNotifier. |
---|
1930 | virtual void erase(const std::vector<Item>& items) { |
---|
1931 | for (int i = 0; i < int(items.size()); ++i) { |
---|
1932 | Map::set(invMap.back(), Map::operator[](items[i])); |
---|
1933 | invMap[Map::operator[](items[i])] = invMap.back(); |
---|
1934 | invMap.pop_back(); |
---|
1935 | } |
---|
1936 | Map::erase(items); |
---|
1937 | } |
---|
1938 | |
---|
1939 | /// \brief Build the unique map. |
---|
1940 | /// |
---|
1941 | /// Build the unique map. It is called by the |
---|
1942 | /// \c AlterationNotifier. |
---|
1943 | virtual void build() { |
---|
1944 | Map::build(); |
---|
1945 | Item it; |
---|
1946 | const typename Map::Notifier* nf = Map::notifier(); |
---|
1947 | for (nf->first(it); it != INVALID; nf->next(it)) { |
---|
1948 | Map::set(it, invMap.size()); |
---|
1949 | invMap.push_back(it); |
---|
1950 | } |
---|
1951 | } |
---|
1952 | |
---|
1953 | /// \brief Clear the keys from the map. |
---|
1954 | /// |
---|
1955 | /// Clear the keys from the map. It is called by the |
---|
1956 | /// \c AlterationNotifier. |
---|
1957 | virtual void clear() { |
---|
1958 | invMap.clear(); |
---|
1959 | Map::clear(); |
---|
1960 | } |
---|
1961 | |
---|
1962 | public: |
---|
1963 | |
---|
1964 | /// \brief Returns the maximal value plus one. |
---|
1965 | /// |
---|
1966 | /// Returns the maximal value plus one in the map. |
---|
1967 | unsigned int size() const { |
---|
1968 | return invMap.size(); |
---|
1969 | } |
---|
1970 | |
---|
1971 | /// \brief Swaps the position of the two items in the map. |
---|
1972 | /// |
---|
1973 | /// Swaps the position of the two items in the map. |
---|
1974 | void swap(const Item& p, const Item& q) { |
---|
1975 | int pi = Map::operator[](p); |
---|
1976 | int qi = Map::operator[](q); |
---|
1977 | Map::set(p, qi); |
---|
1978 | invMap[qi] = p; |
---|
1979 | Map::set(q, pi); |
---|
1980 | invMap[pi] = q; |
---|
1981 | } |
---|
1982 | |
---|
1983 | /// \brief Gives back the \e descriptor of the item. |
---|
1984 | /// |
---|
1985 | /// Gives back the mutable and unique \e descriptor of the map. |
---|
1986 | int operator[](const Item& item) const { |
---|
1987 | return Map::operator[](item); |
---|
1988 | } |
---|
1989 | |
---|
1990 | /// \brief Gives back the item by its descriptor. |
---|
1991 | /// |
---|
1992 | /// Gives back th item by its descriptor. |
---|
1993 | Item operator()(int id) const { |
---|
1994 | return invMap[id]; |
---|
1995 | } |
---|
1996 | |
---|
1997 | private: |
---|
1998 | |
---|
1999 | typedef std::vector<Item> Container; |
---|
2000 | Container invMap; |
---|
2001 | |
---|
2002 | public: |
---|
2003 | /// \brief The inverse map type of DescriptorMap. |
---|
2004 | /// |
---|
2005 | /// The inverse map type of DescriptorMap. |
---|
2006 | class InverseMap { |
---|
2007 | public: |
---|
2008 | /// \brief Constructor of the InverseMap. |
---|
2009 | /// |
---|
2010 | /// Constructor of the InverseMap. |
---|
2011 | explicit InverseMap(const DescriptorMap& _inverted) |
---|
2012 | : inverted(_inverted) {} |
---|
2013 | |
---|
2014 | |
---|
2015 | /// The value type of the InverseMap. |
---|
2016 | typedef typename DescriptorMap::Key Value; |
---|
2017 | /// The key type of the InverseMap. |
---|
2018 | typedef typename DescriptorMap::Value Key; |
---|
2019 | |
---|
2020 | /// \brief Subscript operator. |
---|
2021 | /// |
---|
2022 | /// Subscript operator. It gives back the item |
---|
2023 | /// that the descriptor belongs to currently. |
---|
2024 | Value operator[](const Key& key) const { |
---|
2025 | return inverted(key); |
---|
2026 | } |
---|
2027 | |
---|
2028 | /// \brief Size of the map. |
---|
2029 | /// |
---|
2030 | /// Returns the size of the map. |
---|
2031 | unsigned int size() const { |
---|
2032 | return inverted.size(); |
---|
2033 | } |
---|
2034 | |
---|
2035 | private: |
---|
2036 | const DescriptorMap& inverted; |
---|
2037 | }; |
---|
2038 | |
---|
2039 | /// \brief Gives back the inverse of the map. |
---|
2040 | /// |
---|
2041 | /// Gives back the inverse of the map. |
---|
2042 | const InverseMap inverse() const { |
---|
2043 | return InverseMap(*this); |
---|
2044 | } |
---|
2045 | }; |
---|
2046 | |
---|
2047 | /// \brief Returns the source of the given edge. |
---|
2048 | /// |
---|
2049 | /// The SourceMap gives back the source Node of the given edge. |
---|
2050 | /// \see TargetMap |
---|
2051 | /// \author Balazs Dezso |
---|
2052 | template <typename Graph> |
---|
2053 | class SourceMap { |
---|
2054 | public: |
---|
2055 | |
---|
2056 | typedef typename Graph::Node Value; |
---|
2057 | typedef typename Graph::Edge Key; |
---|
2058 | |
---|
2059 | /// \brief Constructor |
---|
2060 | /// |
---|
2061 | /// Constructor |
---|
2062 | /// \param _graph The graph that the map belongs to. |
---|
2063 | explicit SourceMap(const Graph& _graph) : graph(_graph) {} |
---|
2064 | |
---|
2065 | /// \brief The subscript operator. |
---|
2066 | /// |
---|
2067 | /// The subscript operator. |
---|
2068 | /// \param edge The edge |
---|
2069 | /// \return The source of the edge |
---|
2070 | Value operator[](const Key& edge) const { |
---|
2071 | return graph.source(edge); |
---|
2072 | } |
---|
2073 | |
---|
2074 | private: |
---|
2075 | const Graph& graph; |
---|
2076 | }; |
---|
2077 | |
---|
2078 | /// \brief Returns a \ref SourceMap class. |
---|
2079 | /// |
---|
2080 | /// This function just returns an \ref SourceMap class. |
---|
2081 | /// \relates SourceMap |
---|
2082 | template <typename Graph> |
---|
2083 | inline SourceMap<Graph> sourceMap(const Graph& graph) { |
---|
2084 | return SourceMap<Graph>(graph); |
---|
2085 | } |
---|
2086 | |
---|
2087 | /// \brief Returns the target of the given edge. |
---|
2088 | /// |
---|
2089 | /// The TargetMap gives back the target Node of the given edge. |
---|
2090 | /// \see SourceMap |
---|
2091 | /// \author Balazs Dezso |
---|
2092 | template <typename Graph> |
---|
2093 | class TargetMap { |
---|
2094 | public: |
---|
2095 | |
---|
2096 | typedef typename Graph::Node Value; |
---|
2097 | typedef typename Graph::Edge Key; |
---|
2098 | |
---|
2099 | /// \brief Constructor |
---|
2100 | /// |
---|
2101 | /// Constructor |
---|
2102 | /// \param _graph The graph that the map belongs to. |
---|
2103 | explicit TargetMap(const Graph& _graph) : graph(_graph) {} |
---|
2104 | |
---|
2105 | /// \brief The subscript operator. |
---|
2106 | /// |
---|
2107 | /// The subscript operator. |
---|
2108 | /// \param e The edge |
---|
2109 | /// \return The target of the edge |
---|
2110 | Value operator[](const Key& e) const { |
---|
2111 | return graph.target(e); |
---|
2112 | } |
---|
2113 | |
---|
2114 | private: |
---|
2115 | const Graph& graph; |
---|
2116 | }; |
---|
2117 | |
---|
2118 | /// \brief Returns a \ref TargetMap class. |
---|
2119 | /// |
---|
2120 | /// This function just returns a \ref TargetMap class. |
---|
2121 | /// \relates TargetMap |
---|
2122 | template <typename Graph> |
---|
2123 | inline TargetMap<Graph> targetMap(const Graph& graph) { |
---|
2124 | return TargetMap<Graph>(graph); |
---|
2125 | } |
---|
2126 | |
---|
2127 | /// \brief Returns the "forward" directed edge view of an undirected edge. |
---|
2128 | /// |
---|
2129 | /// Returns the "forward" directed edge view of an undirected edge. |
---|
2130 | /// \see BackwardMap |
---|
2131 | /// \author Balazs Dezso |
---|
2132 | template <typename Graph> |
---|
2133 | class ForwardMap { |
---|
2134 | public: |
---|
2135 | |
---|
2136 | typedef typename Graph::Edge Value; |
---|
2137 | typedef typename Graph::UEdge Key; |
---|
2138 | |
---|
2139 | /// \brief Constructor |
---|
2140 | /// |
---|
2141 | /// Constructor |
---|
2142 | /// \param _graph The graph that the map belongs to. |
---|
2143 | explicit ForwardMap(const Graph& _graph) : graph(_graph) {} |
---|
2144 | |
---|
2145 | /// \brief The subscript operator. |
---|
2146 | /// |
---|
2147 | /// The subscript operator. |
---|
2148 | /// \param key An undirected edge |
---|
2149 | /// \return The "forward" directed edge view of undirected edge |
---|
2150 | Value operator[](const Key& key) const { |
---|
2151 | return graph.direct(key, true); |
---|
2152 | } |
---|
2153 | |
---|
2154 | private: |
---|
2155 | const Graph& graph; |
---|
2156 | }; |
---|
2157 | |
---|
2158 | /// \brief Returns a \ref ForwardMap class. |
---|
2159 | /// |
---|
2160 | /// This function just returns an \ref ForwardMap class. |
---|
2161 | /// \relates ForwardMap |
---|
2162 | template <typename Graph> |
---|
2163 | inline ForwardMap<Graph> forwardMap(const Graph& graph) { |
---|
2164 | return ForwardMap<Graph>(graph); |
---|
2165 | } |
---|
2166 | |
---|
2167 | /// \brief Returns the "backward" directed edge view of an undirected edge. |
---|
2168 | /// |
---|
2169 | /// Returns the "backward" directed edge view of an undirected edge. |
---|
2170 | /// \see ForwardMap |
---|
2171 | /// \author Balazs Dezso |
---|
2172 | template <typename Graph> |
---|
2173 | class BackwardMap { |
---|
2174 | public: |
---|
2175 | |
---|
2176 | typedef typename Graph::Edge Value; |
---|
2177 | typedef typename Graph::UEdge Key; |
---|
2178 | |
---|
2179 | /// \brief Constructor |
---|
2180 | /// |
---|
2181 | /// Constructor |
---|
2182 | /// \param _graph The graph that the map belongs to. |
---|
2183 | explicit BackwardMap(const Graph& _graph) : graph(_graph) {} |
---|
2184 | |
---|
2185 | /// \brief The subscript operator. |
---|
2186 | /// |
---|
2187 | /// The subscript operator. |
---|
2188 | /// \param key An undirected edge |
---|
2189 | /// \return The "backward" directed edge view of undirected edge |
---|
2190 | Value operator[](const Key& key) const { |
---|
2191 | return graph.direct(key, false); |
---|
2192 | } |
---|
2193 | |
---|
2194 | private: |
---|
2195 | const Graph& graph; |
---|
2196 | }; |
---|
2197 | |
---|
2198 | /// \brief Returns a \ref BackwardMap class |
---|
2199 | |
---|
2200 | /// This function just returns a \ref BackwardMap class. |
---|
2201 | /// \relates BackwardMap |
---|
2202 | template <typename Graph> |
---|
2203 | inline BackwardMap<Graph> backwardMap(const Graph& graph) { |
---|
2204 | return BackwardMap<Graph>(graph); |
---|
2205 | } |
---|
2206 | |
---|
2207 | /// \brief Potential difference map |
---|
2208 | /// |
---|
2209 | /// If there is an potential map on the nodes then we |
---|
2210 | /// can get an edge map as we get the substraction of the |
---|
2211 | /// values of the target and source. |
---|
2212 | template <typename Graph, typename NodeMap> |
---|
2213 | class PotentialDifferenceMap { |
---|
2214 | public: |
---|
2215 | typedef typename Graph::Edge Key; |
---|
2216 | typedef typename NodeMap::Value Value; |
---|
2217 | |
---|
2218 | /// \brief Constructor |
---|
2219 | /// |
---|
2220 | /// Contructor of the map |
---|
2221 | explicit PotentialDifferenceMap(const Graph& _graph, |
---|
2222 | const NodeMap& _potential) |
---|
2223 | : graph(_graph), potential(_potential) {} |
---|
2224 | |
---|
2225 | /// \brief Const subscription operator |
---|
2226 | /// |
---|
2227 | /// Const subscription operator |
---|
2228 | Value operator[](const Key& edge) const { |
---|
2229 | return potential[graph.target(edge)] - potential[graph.source(edge)]; |
---|
2230 | } |
---|
2231 | |
---|
2232 | private: |
---|
2233 | const Graph& graph; |
---|
2234 | const NodeMap& potential; |
---|
2235 | }; |
---|
2236 | |
---|
2237 | /// \brief Returns a PotentialDifferenceMap. |
---|
2238 | /// |
---|
2239 | /// This function just returns a PotentialDifferenceMap. |
---|
2240 | /// \relates PotentialDifferenceMap |
---|
2241 | template <typename Graph, typename NodeMap> |
---|
2242 | PotentialDifferenceMap<Graph, NodeMap> |
---|
2243 | potentialDifferenceMap(const Graph& graph, const NodeMap& potential) { |
---|
2244 | return PotentialDifferenceMap<Graph, NodeMap>(graph, potential); |
---|
2245 | } |
---|
2246 | |
---|
2247 | /// \brief Map of the node in-degrees. |
---|
2248 | /// |
---|
2249 | /// This map returns the in-degree of a node. Once it is constructed, |
---|
2250 | /// the degrees are stored in a standard NodeMap, so each query is done |
---|
2251 | /// in constant time. On the other hand, the values are updated automatically |
---|
2252 | /// whenever the graph changes. |
---|
2253 | /// |
---|
2254 | /// \warning Besides addNode() and addEdge(), a graph structure may provide |
---|
2255 | /// alternative ways to modify the graph. The correct behavior of InDegMap |
---|
2256 | /// is not guarantied if these additional features are used. For example |
---|
2257 | /// the functions \ref ListGraph::changeSource() "changeSource()", |
---|
2258 | /// \ref ListGraph::changeTarget() "changeTarget()" and |
---|
2259 | /// \ref ListGraph::reverseEdge() "reverseEdge()" |
---|
2260 | /// of \ref ListGraph will \e not update the degree values correctly. |
---|
2261 | /// |
---|
2262 | /// \sa OutDegMap |
---|
2263 | |
---|
2264 | template <typename _Graph> |
---|
2265 | class InDegMap |
---|
2266 | : protected ItemSetTraits<_Graph, typename _Graph::Edge> |
---|
2267 | ::ItemNotifier::ObserverBase { |
---|
2268 | |
---|
2269 | public: |
---|
2270 | |
---|
2271 | typedef _Graph Graph; |
---|
2272 | typedef int Value; |
---|
2273 | typedef typename Graph::Node Key; |
---|
2274 | |
---|
2275 | typedef typename ItemSetTraits<_Graph, typename _Graph::Edge> |
---|
2276 | ::ItemNotifier::ObserverBase Parent; |
---|
2277 | |
---|
2278 | private: |
---|
2279 | |
---|
2280 | class AutoNodeMap : public DefaultMap<_Graph, Key, int> { |
---|
2281 | public: |
---|
2282 | |
---|
2283 | typedef DefaultMap<_Graph, Key, int> Parent; |
---|
2284 | typedef typename Parent::Graph Graph; |
---|
2285 | |
---|
2286 | AutoNodeMap(const Graph& graph) : Parent(graph, 0) {} |
---|
2287 | |
---|
2288 | virtual void add(const Key& key) { |
---|
2289 | Parent::add(key); |
---|
2290 | Parent::set(key, 0); |
---|
2291 | } |
---|
2292 | |
---|
2293 | virtual void add(const std::vector<Key>& keys) { |
---|
2294 | Parent::add(keys); |
---|
2295 | for (int i = 0; i < int(keys.size()); ++i) { |
---|
2296 | Parent::set(keys[i], 0); |
---|
2297 | } |
---|
2298 | } |
---|
2299 | }; |
---|
2300 | |
---|
2301 | public: |
---|
2302 | |
---|
2303 | /// \brief Constructor. |
---|
2304 | /// |
---|
2305 | /// Constructor for creating in-degree map. |
---|
2306 | explicit InDegMap(const Graph& _graph) : graph(_graph), deg(_graph) { |
---|
2307 | Parent::attach(graph.notifier(typename _Graph::Edge())); |
---|
2308 | |
---|
2309 | for(typename _Graph::NodeIt it(graph); it != INVALID; ++it) { |
---|
2310 | deg[it] = countInEdges(graph, it); |
---|
2311 | } |
---|
2312 | } |
---|
2313 | |
---|
2314 | /// Gives back the in-degree of a Node. |
---|
2315 | int operator[](const Key& key) const { |
---|
2316 | return deg[key]; |
---|
2317 | } |
---|
2318 | |
---|
2319 | protected: |
---|
2320 | |
---|
2321 | typedef typename Graph::Edge Edge; |
---|
2322 | |
---|
2323 | virtual void add(const Edge& edge) { |
---|
2324 | ++deg[graph.target(edge)]; |
---|
2325 | } |
---|
2326 | |
---|
2327 | virtual void add(const std::vector<Edge>& edges) { |
---|
2328 | for (int i = 0; i < int(edges.size()); ++i) { |
---|
2329 | ++deg[graph.target(edges[i])]; |
---|
2330 | } |
---|
2331 | } |
---|
2332 | |
---|
2333 | virtual void erase(const Edge& edge) { |
---|
2334 | --deg[graph.target(edge)]; |
---|
2335 | } |
---|
2336 | |
---|
2337 | virtual void erase(const std::vector<Edge>& edges) { |
---|
2338 | for (int i = 0; i < int(edges.size()); ++i) { |
---|
2339 | --deg[graph.target(edges[i])]; |
---|
2340 | } |
---|
2341 | } |
---|
2342 | |
---|
2343 | virtual void build() { |
---|
2344 | for(typename _Graph::NodeIt it(graph); it != INVALID; ++it) { |
---|
2345 | deg[it] = countInEdges(graph, it); |
---|
2346 | } |
---|
2347 | } |
---|
2348 | |
---|
2349 | virtual void clear() { |
---|
2350 | for(typename _Graph::NodeIt it(graph); it != INVALID; ++it) { |
---|
2351 | deg[it] = 0; |
---|
2352 | } |
---|
2353 | } |
---|
2354 | private: |
---|
2355 | |
---|
2356 | const _Graph& graph; |
---|
2357 | AutoNodeMap deg; |
---|
2358 | }; |
---|
2359 | |
---|
2360 | /// \brief Map of the node out-degrees. |
---|
2361 | /// |
---|
2362 | /// This map returns the out-degree of a node. Once it is constructed, |
---|
2363 | /// the degrees are stored in a standard NodeMap, so each query is done |
---|
2364 | /// in constant time. On the other hand, the values are updated automatically |
---|
2365 | /// whenever the graph changes. |
---|
2366 | /// |
---|
2367 | /// \warning Besides addNode() and addEdge(), a graph structure may provide |
---|
2368 | /// alternative ways to modify the graph. The correct behavior of OutDegMap |
---|
2369 | /// is not guarantied if these additional features are used. For example |
---|
2370 | /// the functions \ref ListGraph::changeSource() "changeSource()", |
---|
2371 | /// \ref ListGraph::changeTarget() "changeTarget()" and |
---|
2372 | /// \ref ListGraph::reverseEdge() "reverseEdge()" |
---|
2373 | /// of \ref ListGraph will \e not update the degree values correctly. |
---|
2374 | /// |
---|
2375 | /// \sa InDegMap |
---|
2376 | |
---|
2377 | template <typename _Graph> |
---|
2378 | class OutDegMap |
---|
2379 | : protected ItemSetTraits<_Graph, typename _Graph::Edge> |
---|
2380 | ::ItemNotifier::ObserverBase { |
---|
2381 | |
---|
2382 | public: |
---|
2383 | |
---|
2384 | typedef typename ItemSetTraits<_Graph, typename _Graph::Edge> |
---|
2385 | ::ItemNotifier::ObserverBase Parent; |
---|
2386 | |
---|
2387 | typedef _Graph Graph; |
---|
2388 | typedef int Value; |
---|
2389 | typedef typename Graph::Node Key; |
---|
2390 | |
---|
2391 | private: |
---|
2392 | |
---|
2393 | class AutoNodeMap : public DefaultMap<_Graph, Key, int> { |
---|
2394 | public: |
---|
2395 | |
---|
2396 | typedef DefaultMap<_Graph, Key, int> Parent; |
---|
2397 | typedef typename Parent::Graph Graph; |
---|
2398 | |
---|
2399 | AutoNodeMap(const Graph& graph) : Parent(graph, 0) {} |
---|
2400 | |
---|
2401 | virtual void add(const Key& key) { |
---|
2402 | Parent::add(key); |
---|
2403 | Parent::set(key, 0); |
---|
2404 | } |
---|
2405 | virtual void add(const std::vector<Key>& keys) { |
---|
2406 | Parent::add(keys); |
---|
2407 | for (int i = 0; i < int(keys.size()); ++i) { |
---|
2408 | Parent::set(keys[i], 0); |
---|
2409 | } |
---|
2410 | } |
---|
2411 | }; |
---|
2412 | |
---|
2413 | public: |
---|
2414 | |
---|
2415 | /// \brief Constructor. |
---|
2416 | /// |
---|
2417 | /// Constructor for creating out-degree map. |
---|
2418 | explicit OutDegMap(const Graph& _graph) : graph(_graph), deg(_graph) { |
---|
2419 | Parent::attach(graph.notifier(typename _Graph::Edge())); |
---|
2420 | |
---|
2421 | for(typename _Graph::NodeIt it(graph); it != INVALID; ++it) { |
---|
2422 | deg[it] = countOutEdges(graph, it); |
---|
2423 | } |
---|
2424 | } |
---|
2425 | |
---|
2426 | /// Gives back the out-degree of a Node. |
---|
2427 | int operator[](const Key& key) const { |
---|
2428 | return deg[key]; |
---|
2429 | } |
---|
2430 | |
---|
2431 | protected: |
---|
2432 | |
---|
2433 | typedef typename Graph::Edge Edge; |
---|
2434 | |
---|
2435 | virtual void add(const Edge& edge) { |
---|
2436 | ++deg[graph.source(edge)]; |
---|
2437 | } |
---|
2438 | |
---|
2439 | virtual void add(const std::vector<Edge>& edges) { |
---|
2440 | for (int i = 0; i < int(edges.size()); ++i) { |
---|
2441 | ++deg[graph.source(edges[i])]; |
---|
2442 | } |
---|
2443 | } |
---|
2444 | |
---|
2445 | virtual void erase(const Edge& edge) { |
---|
2446 | --deg[graph.source(edge)]; |
---|
2447 | } |
---|
2448 | |
---|
2449 | virtual void erase(const std::vector<Edge>& edges) { |
---|
2450 | for (int i = 0; i < int(edges.size()); ++i) { |
---|
2451 | --deg[graph.source(edges[i])]; |
---|
2452 | } |
---|
2453 | } |
---|
2454 | |
---|
2455 | virtual void build() { |
---|
2456 | for(typename _Graph::NodeIt it(graph); it != INVALID; ++it) { |
---|
2457 | deg[it] = countOutEdges(graph, it); |
---|
2458 | } |
---|
2459 | } |
---|
2460 | |
---|
2461 | virtual void clear() { |
---|
2462 | for(typename _Graph::NodeIt it(graph); it != INVALID; ++it) { |
---|
2463 | deg[it] = 0; |
---|
2464 | } |
---|
2465 | } |
---|
2466 | private: |
---|
2467 | |
---|
2468 | const _Graph& graph; |
---|
2469 | AutoNodeMap deg; |
---|
2470 | }; |
---|
2471 | |
---|
2472 | |
---|
2473 | ///Fast edge look up between given endpoints. |
---|
2474 | |
---|
2475 | ///\ingroup gutils |
---|
2476 | ///Using this class, you can find an edge in a graph from a given |
---|
2477 | ///source to a given target in time <em>O(log d)</em>, |
---|
2478 | ///where <em>d</em> is the out-degree of the source node. |
---|
2479 | /// |
---|
2480 | ///It is not possible to find \e all parallel edges between two nodes. |
---|
2481 | ///Use \ref AllEdgeLookUp for this purpose. |
---|
2482 | /// |
---|
2483 | ///\warning This class is static, so you should refresh() (or at least |
---|
2484 | ///refresh(Node)) this data structure |
---|
2485 | ///whenever the graph changes. This is a time consuming (superlinearly |
---|
2486 | ///proportional (<em>O(m</em>log<em>m)</em>) to the number of edges). |
---|
2487 | /// |
---|
2488 | ///\param G The type of the underlying graph. |
---|
2489 | /// |
---|
2490 | ///\sa AllEdgeLookUp |
---|
2491 | template<class G> |
---|
2492 | class EdgeLookUp |
---|
2493 | { |
---|
2494 | public: |
---|
2495 | GRAPH_TYPEDEFS(typename G); |
---|
2496 | typedef G Graph; |
---|
2497 | |
---|
2498 | protected: |
---|
2499 | const Graph &_g; |
---|
2500 | typename Graph::template NodeMap<Edge> _head; |
---|
2501 | typename Graph::template EdgeMap<Edge> _left; |
---|
2502 | typename Graph::template EdgeMap<Edge> _right; |
---|
2503 | |
---|
2504 | class EdgeLess { |
---|
2505 | const Graph &g; |
---|
2506 | public: |
---|
2507 | EdgeLess(const Graph &_g) : g(_g) {} |
---|
2508 | bool operator()(Edge a,Edge b) const |
---|
2509 | { |
---|
2510 | return g.target(a)<g.target(b); |
---|
2511 | } |
---|
2512 | }; |
---|
2513 | |
---|
2514 | public: |
---|
2515 | |
---|
2516 | ///Constructor |
---|
2517 | |
---|
2518 | ///Constructor. |
---|
2519 | /// |
---|
2520 | ///It builds up the search database, which remains valid until the graph |
---|
2521 | ///changes. |
---|
2522 | EdgeLookUp(const Graph &g) :_g(g),_head(g),_left(g),_right(g) {refresh();} |
---|
2523 | |
---|
2524 | private: |
---|
2525 | Edge refresh_rec(std::vector<Edge> &v,int a,int b) |
---|
2526 | { |
---|
2527 | int m=(a+b)/2; |
---|
2528 | Edge me=v[m]; |
---|
2529 | _left[me] = a<m?refresh_rec(v,a,m-1):INVALID; |
---|
2530 | _right[me] = m<b?refresh_rec(v,m+1,b):INVALID; |
---|
2531 | return me; |
---|
2532 | } |
---|
2533 | public: |
---|
2534 | ///Refresh the data structure at a node. |
---|
2535 | |
---|
2536 | ///Build up the search database of node \c n. |
---|
2537 | /// |
---|
2538 | ///It runs in time <em>O(d</em>log<em>d)</em>, where <em>d</em> is |
---|
2539 | ///the number of the outgoing edges of \c n. |
---|
2540 | void refresh(Node n) |
---|
2541 | { |
---|
2542 | std::vector<Edge> v; |
---|
2543 | for(OutEdgeIt e(_g,n);e!=INVALID;++e) v.push_back(e); |
---|
2544 | if(v.size()) { |
---|
2545 | std::sort(v.begin(),v.end(),EdgeLess(_g)); |
---|
2546 | _head[n]=refresh_rec(v,0,v.size()-1); |
---|
2547 | } |
---|
2548 | else _head[n]=INVALID; |
---|
2549 | } |
---|
2550 | ///Refresh the full data structure. |
---|
2551 | |
---|
2552 | ///Build up the full search database. In fact, it simply calls |
---|
2553 | ///\ref refresh(Node) "refresh(n)" for each node \c n. |
---|
2554 | /// |
---|
2555 | ///It runs in time <em>O(m</em>log<em>D)</em>, where <em>m</em> is |
---|
2556 | ///the number of the edges of \c n and <em>D</em> is the maximum |
---|
2557 | ///out-degree of the graph. |
---|
2558 | |
---|
2559 | void refresh() |
---|
2560 | { |
---|
2561 | for(NodeIt n(_g);n!=INVALID;++n) refresh(n); |
---|
2562 | } |
---|
2563 | |
---|
2564 | ///Find an edge between two nodes. |
---|
2565 | |
---|
2566 | ///Find an edge between two nodes in time <em>O(</em>log<em>d)</em>, where |
---|
2567 | /// <em>d</em> is the number of outgoing edges of \c s. |
---|
2568 | ///\param s The source node |
---|
2569 | ///\param t The target node |
---|
2570 | ///\return An edge from \c s to \c t if there exists, |
---|
2571 | ///\ref INVALID otherwise. |
---|
2572 | /// |
---|
2573 | ///\warning If you change the graph, refresh() must be called before using |
---|
2574 | ///this operator. If you change the outgoing edges of |
---|
2575 | ///a single node \c n, then |
---|
2576 | ///\ref refresh(Node) "refresh(n)" is enough. |
---|
2577 | /// |
---|
2578 | Edge operator()(Node s, Node t) const |
---|
2579 | { |
---|
2580 | Edge e; |
---|
2581 | for(e=_head[s]; |
---|
2582 | e!=INVALID&&_g.target(e)!=t; |
---|
2583 | e = t < _g.target(e)?_left[e]:_right[e]) ; |
---|
2584 | return e; |
---|
2585 | } |
---|
2586 | |
---|
2587 | }; |
---|
2588 | |
---|
2589 | ///Fast look up of all edges between given endpoints. |
---|
2590 | |
---|
2591 | ///\ingroup gutils |
---|
2592 | ///This class is the same as \ref EdgeLookUp, with the addition |
---|
2593 | ///that it makes it possible to find all edges between given endpoints. |
---|
2594 | /// |
---|
2595 | ///\warning This class is static, so you should refresh() (or at least |
---|
2596 | ///refresh(Node)) this data structure |
---|
2597 | ///whenever the graph changes. This is a time consuming (superlinearly |
---|
2598 | ///proportional (<em>O(m</em>log<em>m)</em>) to the number of edges). |
---|
2599 | /// |
---|
2600 | ///\param G The type of the underlying graph. |
---|
2601 | /// |
---|
2602 | ///\sa EdgeLookUp |
---|
2603 | template<class G> |
---|
2604 | class AllEdgeLookUp : public EdgeLookUp<G> |
---|
2605 | { |
---|
2606 | using EdgeLookUp<G>::_g; |
---|
2607 | using EdgeLookUp<G>::_right; |
---|
2608 | using EdgeLookUp<G>::_left; |
---|
2609 | using EdgeLookUp<G>::_head; |
---|
2610 | |
---|
2611 | GRAPH_TYPEDEFS(typename G); |
---|
2612 | typedef G Graph; |
---|
2613 | |
---|
2614 | typename Graph::template EdgeMap<Edge> _next; |
---|
2615 | |
---|
2616 | Edge refreshNext(Edge head,Edge next=INVALID) |
---|
2617 | { |
---|
2618 | if(head==INVALID) return next; |
---|
2619 | else { |
---|
2620 | next=refreshNext(_right[head],next); |
---|
2621 | // _next[head]=next; |
---|
2622 | _next[head]=( next!=INVALID && _g.target(next)==_g.target(head)) |
---|
2623 | ? next : INVALID; |
---|
2624 | return refreshNext(_left[head],head); |
---|
2625 | } |
---|
2626 | } |
---|
2627 | |
---|
2628 | void refreshNext() |
---|
2629 | { |
---|
2630 | for(NodeIt n(_g);n!=INVALID;++n) refreshNext(_head[n]); |
---|
2631 | } |
---|
2632 | |
---|
2633 | public: |
---|
2634 | ///Constructor |
---|
2635 | |
---|
2636 | ///Constructor. |
---|
2637 | /// |
---|
2638 | ///It builds up the search database, which remains valid until the graph |
---|
2639 | ///changes. |
---|
2640 | AllEdgeLookUp(const Graph &g) : EdgeLookUp<G>(g), _next(g) {refreshNext();} |
---|
2641 | |
---|
2642 | ///Refresh the data structure at a node. |
---|
2643 | |
---|
2644 | ///Build up the search database of node \c n. |
---|
2645 | /// |
---|
2646 | ///It runs in time <em>O(d</em>log<em>d)</em>, where <em>d</em> is |
---|
2647 | ///the number of the outgoing edges of \c n. |
---|
2648 | |
---|
2649 | void refresh(Node n) |
---|
2650 | { |
---|
2651 | EdgeLookUp<G>::refresh(n); |
---|
2652 | refreshNext(_head[n]); |
---|
2653 | } |
---|
2654 | |
---|
2655 | ///Refresh the full data structure. |
---|
2656 | |
---|
2657 | ///Build up the full search database. In fact, it simply calls |
---|
2658 | ///\ref refresh(Node) "refresh(n)" for each node \c n. |
---|
2659 | /// |
---|
2660 | ///It runs in time <em>O(m</em>log<em>D)</em>, where <em>m</em> is |
---|
2661 | ///the number of the edges of \c n and <em>D</em> is the maximum |
---|
2662 | ///out-degree of the graph. |
---|
2663 | |
---|
2664 | void refresh() |
---|
2665 | { |
---|
2666 | for(NodeIt n(_g);n!=INVALID;++n) refresh(_head[n]); |
---|
2667 | } |
---|
2668 | |
---|
2669 | ///Find an edge between two nodes. |
---|
2670 | |
---|
2671 | ///Find an edge between two nodes. |
---|
2672 | ///\param s The source node |
---|
2673 | ///\param t The target node |
---|
2674 | ///\param prev The previous edge between \c s and \c t. It it is INVALID or |
---|
2675 | ///not given, the operator finds the first appropriate edge. |
---|
2676 | ///\return An edge from \c s to \c t after \c prev or |
---|
2677 | ///\ref INVALID if there is no more. |
---|
2678 | /// |
---|
2679 | ///For example, you can count the number of edges from \c u to \c v in the |
---|
2680 | ///following way. |
---|
2681 | ///\code |
---|
2682 | ///AllEdgeLookUp<ListGraph> ae(g); |
---|
2683 | ///... |
---|
2684 | ///int n=0; |
---|
2685 | ///for(Edge e=ae(u,v);e!=INVALID;e=ae(u,v,e)) n++; |
---|
2686 | ///\endcode |
---|
2687 | /// |
---|
2688 | ///Finding the first edge take <em>O(</em>log<em>d)</em> time, where |
---|
2689 | /// <em>d</em> is the number of outgoing edges of \c s. Then, the |
---|
2690 | ///consecutive edges are found in constant time. |
---|
2691 | /// |
---|
2692 | ///\warning If you change the graph, refresh() must be called before using |
---|
2693 | ///this operator. If you change the outgoing edges of |
---|
2694 | ///a single node \c n, then |
---|
2695 | ///\ref refresh(Node) "refresh(n)" is enough. |
---|
2696 | /// |
---|
2697 | #ifdef DOXYGEN |
---|
2698 | Edge operator()(Node s, Node t, Edge prev=INVALID) const {} |
---|
2699 | #else |
---|
2700 | using EdgeLookUp<G>::operator() ; |
---|
2701 | Edge operator()(Node s, Node t, Edge prev) const |
---|
2702 | { |
---|
2703 | return prev==INVALID?(*this)(s,t):_next[prev]; |
---|
2704 | } |
---|
2705 | #endif |
---|
2706 | |
---|
2707 | }; |
---|
2708 | |
---|
2709 | /// @} |
---|
2710 | |
---|
2711 | } //END OF NAMESPACE LEMON |
---|
2712 | |
---|
2713 | #endif |
---|