1 | /* -*- mode: C++; indent-tabs-mode: nil; -*- |
---|
2 | * |
---|
3 | * This file is a part of LEMON, a generic C++ optimization library. |
---|
4 | * |
---|
5 | * Copyright (C) 2003-2009 |
---|
6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
---|
8 | * |
---|
9 | * Permission to use, modify and distribute this software is granted |
---|
10 | * provided that this copyright notice appears in all copies. For |
---|
11 | * precise terms see the accompanying LICENSE file. |
---|
12 | * |
---|
13 | * This software is provided "AS IS" with no warranty of any kind, |
---|
14 | * express or implied, and with no claim as to its suitability for any |
---|
15 | * purpose. |
---|
16 | * |
---|
17 | */ |
---|
18 | |
---|
19 | #ifndef LEMON_ADAPTORS_H |
---|
20 | #define LEMON_ADAPTORS_H |
---|
21 | |
---|
22 | /// \ingroup graph_adaptors |
---|
23 | /// \file |
---|
24 | /// \brief Adaptor classes for digraphs and graphs |
---|
25 | /// |
---|
26 | /// This file contains several useful adaptors for digraphs and graphs. |
---|
27 | |
---|
28 | #include <lemon/core.h> |
---|
29 | #include <lemon/maps.h> |
---|
30 | #include <lemon/bits/variant.h> |
---|
31 | |
---|
32 | #include <lemon/bits/graph_adaptor_extender.h> |
---|
33 | #include <lemon/bits/map_extender.h> |
---|
34 | #include <lemon/tolerance.h> |
---|
35 | |
---|
36 | #include <algorithm> |
---|
37 | |
---|
38 | namespace lemon { |
---|
39 | |
---|
40 | #ifdef _MSC_VER |
---|
41 | #define LEMON_SCOPE_FIX(OUTER, NESTED) OUTER::NESTED |
---|
42 | #else |
---|
43 | #define LEMON_SCOPE_FIX(OUTER, NESTED) typename OUTER::template NESTED |
---|
44 | #endif |
---|
45 | |
---|
46 | template<typename DGR> |
---|
47 | class DigraphAdaptorBase { |
---|
48 | public: |
---|
49 | typedef DGR Digraph; |
---|
50 | typedef DigraphAdaptorBase Adaptor; |
---|
51 | |
---|
52 | protected: |
---|
53 | DGR* _digraph; |
---|
54 | DigraphAdaptorBase() : _digraph(0) { } |
---|
55 | void initialize(DGR& digraph) { _digraph = &digraph; } |
---|
56 | |
---|
57 | public: |
---|
58 | DigraphAdaptorBase(DGR& digraph) : _digraph(&digraph) { } |
---|
59 | |
---|
60 | typedef typename DGR::Node Node; |
---|
61 | typedef typename DGR::Arc Arc; |
---|
62 | |
---|
63 | void first(Node& i) const { _digraph->first(i); } |
---|
64 | void first(Arc& i) const { _digraph->first(i); } |
---|
65 | void firstIn(Arc& i, const Node& n) const { _digraph->firstIn(i, n); } |
---|
66 | void firstOut(Arc& i, const Node& n ) const { _digraph->firstOut(i, n); } |
---|
67 | |
---|
68 | void next(Node& i) const { _digraph->next(i); } |
---|
69 | void next(Arc& i) const { _digraph->next(i); } |
---|
70 | void nextIn(Arc& i) const { _digraph->nextIn(i); } |
---|
71 | void nextOut(Arc& i) const { _digraph->nextOut(i); } |
---|
72 | |
---|
73 | Node source(const Arc& a) const { return _digraph->source(a); } |
---|
74 | Node target(const Arc& a) const { return _digraph->target(a); } |
---|
75 | |
---|
76 | typedef NodeNumTagIndicator<DGR> NodeNumTag; |
---|
77 | int nodeNum() const { return _digraph->nodeNum(); } |
---|
78 | |
---|
79 | typedef ArcNumTagIndicator<DGR> ArcNumTag; |
---|
80 | int arcNum() const { return _digraph->arcNum(); } |
---|
81 | |
---|
82 | typedef FindArcTagIndicator<DGR> FindArcTag; |
---|
83 | Arc findArc(const Node& u, const Node& v, const Arc& prev = INVALID) const { |
---|
84 | return _digraph->findArc(u, v, prev); |
---|
85 | } |
---|
86 | |
---|
87 | Node addNode() { return _digraph->addNode(); } |
---|
88 | Arc addArc(const Node& u, const Node& v) { return _digraph->addArc(u, v); } |
---|
89 | |
---|
90 | void erase(const Node& n) { _digraph->erase(n); } |
---|
91 | void erase(const Arc& a) { _digraph->erase(a); } |
---|
92 | |
---|
93 | void clear() { _digraph->clear(); } |
---|
94 | |
---|
95 | int id(const Node& n) const { return _digraph->id(n); } |
---|
96 | int id(const Arc& a) const { return _digraph->id(a); } |
---|
97 | |
---|
98 | Node nodeFromId(int ix) const { return _digraph->nodeFromId(ix); } |
---|
99 | Arc arcFromId(int ix) const { return _digraph->arcFromId(ix); } |
---|
100 | |
---|
101 | int maxNodeId() const { return _digraph->maxNodeId(); } |
---|
102 | int maxArcId() const { return _digraph->maxArcId(); } |
---|
103 | |
---|
104 | typedef typename ItemSetTraits<DGR, Node>::ItemNotifier NodeNotifier; |
---|
105 | NodeNotifier& notifier(Node) const { return _digraph->notifier(Node()); } |
---|
106 | |
---|
107 | typedef typename ItemSetTraits<DGR, Arc>::ItemNotifier ArcNotifier; |
---|
108 | ArcNotifier& notifier(Arc) const { return _digraph->notifier(Arc()); } |
---|
109 | |
---|
110 | template <typename V> |
---|
111 | class NodeMap : public DGR::template NodeMap<V> { |
---|
112 | public: |
---|
113 | |
---|
114 | typedef typename DGR::template NodeMap<V> Parent; |
---|
115 | |
---|
116 | explicit NodeMap(const Adaptor& adaptor) |
---|
117 | : Parent(*adaptor._digraph) {} |
---|
118 | |
---|
119 | NodeMap(const Adaptor& adaptor, const V& value) |
---|
120 | : Parent(*adaptor._digraph, value) { } |
---|
121 | |
---|
122 | private: |
---|
123 | NodeMap& operator=(const NodeMap& cmap) { |
---|
124 | return operator=<NodeMap>(cmap); |
---|
125 | } |
---|
126 | |
---|
127 | template <typename CMap> |
---|
128 | NodeMap& operator=(const CMap& cmap) { |
---|
129 | Parent::operator=(cmap); |
---|
130 | return *this; |
---|
131 | } |
---|
132 | |
---|
133 | }; |
---|
134 | |
---|
135 | template <typename V> |
---|
136 | class ArcMap : public DGR::template ArcMap<V> { |
---|
137 | public: |
---|
138 | |
---|
139 | typedef typename DGR::template ArcMap<V> Parent; |
---|
140 | |
---|
141 | explicit ArcMap(const DigraphAdaptorBase<DGR>& adaptor) |
---|
142 | : Parent(*adaptor._digraph) {} |
---|
143 | |
---|
144 | ArcMap(const DigraphAdaptorBase<DGR>& adaptor, const V& value) |
---|
145 | : Parent(*adaptor._digraph, value) {} |
---|
146 | |
---|
147 | private: |
---|
148 | ArcMap& operator=(const ArcMap& cmap) { |
---|
149 | return operator=<ArcMap>(cmap); |
---|
150 | } |
---|
151 | |
---|
152 | template <typename CMap> |
---|
153 | ArcMap& operator=(const CMap& cmap) { |
---|
154 | Parent::operator=(cmap); |
---|
155 | return *this; |
---|
156 | } |
---|
157 | |
---|
158 | }; |
---|
159 | |
---|
160 | }; |
---|
161 | |
---|
162 | template<typename GR> |
---|
163 | class GraphAdaptorBase { |
---|
164 | public: |
---|
165 | typedef GR Graph; |
---|
166 | |
---|
167 | protected: |
---|
168 | GR* _graph; |
---|
169 | |
---|
170 | GraphAdaptorBase() : _graph(0) {} |
---|
171 | |
---|
172 | void initialize(GR& graph) { _graph = &graph; } |
---|
173 | |
---|
174 | public: |
---|
175 | GraphAdaptorBase(GR& graph) : _graph(&graph) {} |
---|
176 | |
---|
177 | typedef typename GR::Node Node; |
---|
178 | typedef typename GR::Arc Arc; |
---|
179 | typedef typename GR::Edge Edge; |
---|
180 | |
---|
181 | void first(Node& i) const { _graph->first(i); } |
---|
182 | void first(Arc& i) const { _graph->first(i); } |
---|
183 | void first(Edge& i) const { _graph->first(i); } |
---|
184 | void firstIn(Arc& i, const Node& n) const { _graph->firstIn(i, n); } |
---|
185 | void firstOut(Arc& i, const Node& n ) const { _graph->firstOut(i, n); } |
---|
186 | void firstInc(Edge &i, bool &d, const Node &n) const { |
---|
187 | _graph->firstInc(i, d, n); |
---|
188 | } |
---|
189 | |
---|
190 | void next(Node& i) const { _graph->next(i); } |
---|
191 | void next(Arc& i) const { _graph->next(i); } |
---|
192 | void next(Edge& i) const { _graph->next(i); } |
---|
193 | void nextIn(Arc& i) const { _graph->nextIn(i); } |
---|
194 | void nextOut(Arc& i) const { _graph->nextOut(i); } |
---|
195 | void nextInc(Edge &i, bool &d) const { _graph->nextInc(i, d); } |
---|
196 | |
---|
197 | Node u(const Edge& e) const { return _graph->u(e); } |
---|
198 | Node v(const Edge& e) const { return _graph->v(e); } |
---|
199 | |
---|
200 | Node source(const Arc& a) const { return _graph->source(a); } |
---|
201 | Node target(const Arc& a) const { return _graph->target(a); } |
---|
202 | |
---|
203 | typedef NodeNumTagIndicator<Graph> NodeNumTag; |
---|
204 | int nodeNum() const { return _graph->nodeNum(); } |
---|
205 | |
---|
206 | typedef ArcNumTagIndicator<Graph> ArcNumTag; |
---|
207 | int arcNum() const { return _graph->arcNum(); } |
---|
208 | |
---|
209 | typedef EdgeNumTagIndicator<Graph> EdgeNumTag; |
---|
210 | int edgeNum() const { return _graph->edgeNum(); } |
---|
211 | |
---|
212 | typedef FindArcTagIndicator<Graph> FindArcTag; |
---|
213 | Arc findArc(const Node& u, const Node& v, |
---|
214 | const Arc& prev = INVALID) const { |
---|
215 | return _graph->findArc(u, v, prev); |
---|
216 | } |
---|
217 | |
---|
218 | typedef FindEdgeTagIndicator<Graph> FindEdgeTag; |
---|
219 | Edge findEdge(const Node& u, const Node& v, |
---|
220 | const Edge& prev = INVALID) const { |
---|
221 | return _graph->findEdge(u, v, prev); |
---|
222 | } |
---|
223 | |
---|
224 | Node addNode() { return _graph->addNode(); } |
---|
225 | Edge addEdge(const Node& u, const Node& v) { return _graph->addEdge(u, v); } |
---|
226 | |
---|
227 | void erase(const Node& i) { _graph->erase(i); } |
---|
228 | void erase(const Edge& i) { _graph->erase(i); } |
---|
229 | |
---|
230 | void clear() { _graph->clear(); } |
---|
231 | |
---|
232 | bool direction(const Arc& a) const { return _graph->direction(a); } |
---|
233 | Arc direct(const Edge& e, bool d) const { return _graph->direct(e, d); } |
---|
234 | |
---|
235 | int id(const Node& v) const { return _graph->id(v); } |
---|
236 | int id(const Arc& a) const { return _graph->id(a); } |
---|
237 | int id(const Edge& e) const { return _graph->id(e); } |
---|
238 | |
---|
239 | Node nodeFromId(int ix) const { return _graph->nodeFromId(ix); } |
---|
240 | Arc arcFromId(int ix) const { return _graph->arcFromId(ix); } |
---|
241 | Edge edgeFromId(int ix) const { return _graph->edgeFromId(ix); } |
---|
242 | |
---|
243 | int maxNodeId() const { return _graph->maxNodeId(); } |
---|
244 | int maxArcId() const { return _graph->maxArcId(); } |
---|
245 | int maxEdgeId() const { return _graph->maxEdgeId(); } |
---|
246 | |
---|
247 | typedef typename ItemSetTraits<GR, Node>::ItemNotifier NodeNotifier; |
---|
248 | NodeNotifier& notifier(Node) const { return _graph->notifier(Node()); } |
---|
249 | |
---|
250 | typedef typename ItemSetTraits<GR, Arc>::ItemNotifier ArcNotifier; |
---|
251 | ArcNotifier& notifier(Arc) const { return _graph->notifier(Arc()); } |
---|
252 | |
---|
253 | typedef typename ItemSetTraits<GR, Edge>::ItemNotifier EdgeNotifier; |
---|
254 | EdgeNotifier& notifier(Edge) const { return _graph->notifier(Edge()); } |
---|
255 | |
---|
256 | template <typename V> |
---|
257 | class NodeMap : public GR::template NodeMap<V> { |
---|
258 | public: |
---|
259 | typedef typename GR::template NodeMap<V> Parent; |
---|
260 | explicit NodeMap(const GraphAdaptorBase<GR>& adapter) |
---|
261 | : Parent(*adapter._graph) {} |
---|
262 | NodeMap(const GraphAdaptorBase<GR>& adapter, const V& value) |
---|
263 | : Parent(*adapter._graph, value) {} |
---|
264 | |
---|
265 | private: |
---|
266 | NodeMap& operator=(const NodeMap& cmap) { |
---|
267 | return operator=<NodeMap>(cmap); |
---|
268 | } |
---|
269 | |
---|
270 | template <typename CMap> |
---|
271 | NodeMap& operator=(const CMap& cmap) { |
---|
272 | Parent::operator=(cmap); |
---|
273 | return *this; |
---|
274 | } |
---|
275 | |
---|
276 | }; |
---|
277 | |
---|
278 | template <typename V> |
---|
279 | class ArcMap : public GR::template ArcMap<V> { |
---|
280 | public: |
---|
281 | typedef typename GR::template ArcMap<V> Parent; |
---|
282 | explicit ArcMap(const GraphAdaptorBase<GR>& adapter) |
---|
283 | : Parent(*adapter._graph) {} |
---|
284 | ArcMap(const GraphAdaptorBase<GR>& adapter, const V& value) |
---|
285 | : Parent(*adapter._graph, value) {} |
---|
286 | |
---|
287 | private: |
---|
288 | ArcMap& operator=(const ArcMap& cmap) { |
---|
289 | return operator=<ArcMap>(cmap); |
---|
290 | } |
---|
291 | |
---|
292 | template <typename CMap> |
---|
293 | ArcMap& operator=(const CMap& cmap) { |
---|
294 | Parent::operator=(cmap); |
---|
295 | return *this; |
---|
296 | } |
---|
297 | }; |
---|
298 | |
---|
299 | template <typename V> |
---|
300 | class EdgeMap : public GR::template EdgeMap<V> { |
---|
301 | public: |
---|
302 | typedef typename GR::template EdgeMap<V> Parent; |
---|
303 | explicit EdgeMap(const GraphAdaptorBase<GR>& adapter) |
---|
304 | : Parent(*adapter._graph) {} |
---|
305 | EdgeMap(const GraphAdaptorBase<GR>& adapter, const V& value) |
---|
306 | : Parent(*adapter._graph, value) {} |
---|
307 | |
---|
308 | private: |
---|
309 | EdgeMap& operator=(const EdgeMap& cmap) { |
---|
310 | return operator=<EdgeMap>(cmap); |
---|
311 | } |
---|
312 | |
---|
313 | template <typename CMap> |
---|
314 | EdgeMap& operator=(const CMap& cmap) { |
---|
315 | Parent::operator=(cmap); |
---|
316 | return *this; |
---|
317 | } |
---|
318 | }; |
---|
319 | |
---|
320 | }; |
---|
321 | |
---|
322 | template <typename DGR> |
---|
323 | class ReverseDigraphBase : public DigraphAdaptorBase<DGR> { |
---|
324 | public: |
---|
325 | typedef DGR Digraph; |
---|
326 | typedef DigraphAdaptorBase<DGR> Parent; |
---|
327 | protected: |
---|
328 | ReverseDigraphBase() : Parent() { } |
---|
329 | public: |
---|
330 | typedef typename Parent::Node Node; |
---|
331 | typedef typename Parent::Arc Arc; |
---|
332 | |
---|
333 | void firstIn(Arc& a, const Node& n) const { Parent::firstOut(a, n); } |
---|
334 | void firstOut(Arc& a, const Node& n ) const { Parent::firstIn(a, n); } |
---|
335 | |
---|
336 | void nextIn(Arc& a) const { Parent::nextOut(a); } |
---|
337 | void nextOut(Arc& a) const { Parent::nextIn(a); } |
---|
338 | |
---|
339 | Node source(const Arc& a) const { return Parent::target(a); } |
---|
340 | Node target(const Arc& a) const { return Parent::source(a); } |
---|
341 | |
---|
342 | Arc addArc(const Node& u, const Node& v) { return Parent::addArc(v, u); } |
---|
343 | |
---|
344 | typedef FindArcTagIndicator<DGR> FindArcTag; |
---|
345 | Arc findArc(const Node& u, const Node& v, |
---|
346 | const Arc& prev = INVALID) const { |
---|
347 | return Parent::findArc(v, u, prev); |
---|
348 | } |
---|
349 | |
---|
350 | }; |
---|
351 | |
---|
352 | /// \ingroup graph_adaptors |
---|
353 | /// |
---|
354 | /// \brief Adaptor class for reversing the orientation of the arcs in |
---|
355 | /// a digraph. |
---|
356 | /// |
---|
357 | /// ReverseDigraph can be used for reversing the arcs in a digraph. |
---|
358 | /// It conforms to the \ref concepts::Digraph "Digraph" concept. |
---|
359 | /// |
---|
360 | /// The adapted digraph can also be modified through this adaptor |
---|
361 | /// by adding or removing nodes or arcs, unless the \c GR template |
---|
362 | /// parameter is set to be \c const. |
---|
363 | /// |
---|
364 | /// \tparam DGR The type of the adapted digraph. |
---|
365 | /// It must conform to the \ref concepts::Digraph "Digraph" concept. |
---|
366 | /// It can also be specified to be \c const. |
---|
367 | /// |
---|
368 | /// \note The \c Node and \c Arc types of this adaptor and the adapted |
---|
369 | /// digraph are convertible to each other. |
---|
370 | template<typename DGR> |
---|
371 | #ifdef DOXYGEN |
---|
372 | class ReverseDigraph { |
---|
373 | #else |
---|
374 | class ReverseDigraph : |
---|
375 | public DigraphAdaptorExtender<ReverseDigraphBase<DGR> > { |
---|
376 | #endif |
---|
377 | public: |
---|
378 | /// The type of the adapted digraph. |
---|
379 | typedef DGR Digraph; |
---|
380 | typedef DigraphAdaptorExtender<ReverseDigraphBase<DGR> > Parent; |
---|
381 | protected: |
---|
382 | ReverseDigraph() { } |
---|
383 | public: |
---|
384 | |
---|
385 | /// \brief Constructor |
---|
386 | /// |
---|
387 | /// Creates a reverse digraph adaptor for the given digraph. |
---|
388 | explicit ReverseDigraph(DGR& digraph) { |
---|
389 | Parent::initialize(digraph); |
---|
390 | } |
---|
391 | }; |
---|
392 | |
---|
393 | /// \brief Returns a read-only ReverseDigraph adaptor |
---|
394 | /// |
---|
395 | /// This function just returns a read-only \ref ReverseDigraph adaptor. |
---|
396 | /// \ingroup graph_adaptors |
---|
397 | /// \relates ReverseDigraph |
---|
398 | template<typename DGR> |
---|
399 | ReverseDigraph<const DGR> reverseDigraph(const DGR& digraph) { |
---|
400 | return ReverseDigraph<const DGR>(digraph); |
---|
401 | } |
---|
402 | |
---|
403 | |
---|
404 | template <typename DGR, typename NF, typename AF, bool ch = true> |
---|
405 | class SubDigraphBase : public DigraphAdaptorBase<DGR> { |
---|
406 | public: |
---|
407 | typedef DGR Digraph; |
---|
408 | typedef NF NodeFilterMap; |
---|
409 | typedef AF ArcFilterMap; |
---|
410 | |
---|
411 | typedef SubDigraphBase Adaptor; |
---|
412 | typedef DigraphAdaptorBase<DGR> Parent; |
---|
413 | protected: |
---|
414 | NF* _node_filter; |
---|
415 | AF* _arc_filter; |
---|
416 | SubDigraphBase() |
---|
417 | : Parent(), _node_filter(0), _arc_filter(0) { } |
---|
418 | |
---|
419 | void initialize(DGR& digraph, NF& node_filter, AF& arc_filter) { |
---|
420 | Parent::initialize(digraph); |
---|
421 | _node_filter = &node_filter; |
---|
422 | _arc_filter = &arc_filter; |
---|
423 | } |
---|
424 | |
---|
425 | public: |
---|
426 | |
---|
427 | typedef typename Parent::Node Node; |
---|
428 | typedef typename Parent::Arc Arc; |
---|
429 | |
---|
430 | void first(Node& i) const { |
---|
431 | Parent::first(i); |
---|
432 | while (i != INVALID && !(*_node_filter)[i]) Parent::next(i); |
---|
433 | } |
---|
434 | |
---|
435 | void first(Arc& i) const { |
---|
436 | Parent::first(i); |
---|
437 | while (i != INVALID && (!(*_arc_filter)[i] |
---|
438 | || !(*_node_filter)[Parent::source(i)] |
---|
439 | || !(*_node_filter)[Parent::target(i)])) |
---|
440 | Parent::next(i); |
---|
441 | } |
---|
442 | |
---|
443 | void firstIn(Arc& i, const Node& n) const { |
---|
444 | Parent::firstIn(i, n); |
---|
445 | while (i != INVALID && (!(*_arc_filter)[i] |
---|
446 | || !(*_node_filter)[Parent::source(i)])) |
---|
447 | Parent::nextIn(i); |
---|
448 | } |
---|
449 | |
---|
450 | void firstOut(Arc& i, const Node& n) const { |
---|
451 | Parent::firstOut(i, n); |
---|
452 | while (i != INVALID && (!(*_arc_filter)[i] |
---|
453 | || !(*_node_filter)[Parent::target(i)])) |
---|
454 | Parent::nextOut(i); |
---|
455 | } |
---|
456 | |
---|
457 | void next(Node& i) const { |
---|
458 | Parent::next(i); |
---|
459 | while (i != INVALID && !(*_node_filter)[i]) Parent::next(i); |
---|
460 | } |
---|
461 | |
---|
462 | void next(Arc& i) const { |
---|
463 | Parent::next(i); |
---|
464 | while (i != INVALID && (!(*_arc_filter)[i] |
---|
465 | || !(*_node_filter)[Parent::source(i)] |
---|
466 | || !(*_node_filter)[Parent::target(i)])) |
---|
467 | Parent::next(i); |
---|
468 | } |
---|
469 | |
---|
470 | void nextIn(Arc& i) const { |
---|
471 | Parent::nextIn(i); |
---|
472 | while (i != INVALID && (!(*_arc_filter)[i] |
---|
473 | || !(*_node_filter)[Parent::source(i)])) |
---|
474 | Parent::nextIn(i); |
---|
475 | } |
---|
476 | |
---|
477 | void nextOut(Arc& i) const { |
---|
478 | Parent::nextOut(i); |
---|
479 | while (i != INVALID && (!(*_arc_filter)[i] |
---|
480 | || !(*_node_filter)[Parent::target(i)])) |
---|
481 | Parent::nextOut(i); |
---|
482 | } |
---|
483 | |
---|
484 | void status(const Node& n, bool v) const { _node_filter->set(n, v); } |
---|
485 | void status(const Arc& a, bool v) const { _arc_filter->set(a, v); } |
---|
486 | |
---|
487 | bool status(const Node& n) const { return (*_node_filter)[n]; } |
---|
488 | bool status(const Arc& a) const { return (*_arc_filter)[a]; } |
---|
489 | |
---|
490 | typedef False NodeNumTag; |
---|
491 | typedef False ArcNumTag; |
---|
492 | |
---|
493 | typedef FindArcTagIndicator<DGR> FindArcTag; |
---|
494 | Arc findArc(const Node& source, const Node& target, |
---|
495 | const Arc& prev = INVALID) const { |
---|
496 | if (!(*_node_filter)[source] || !(*_node_filter)[target]) { |
---|
497 | return INVALID; |
---|
498 | } |
---|
499 | Arc arc = Parent::findArc(source, target, prev); |
---|
500 | while (arc != INVALID && !(*_arc_filter)[arc]) { |
---|
501 | arc = Parent::findArc(source, target, arc); |
---|
502 | } |
---|
503 | return arc; |
---|
504 | } |
---|
505 | |
---|
506 | public: |
---|
507 | |
---|
508 | template <typename V> |
---|
509 | class NodeMap |
---|
510 | : public SubMapExtender<SubDigraphBase<DGR, NF, AF, ch>, |
---|
511 | LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, NodeMap<V>)> { |
---|
512 | public: |
---|
513 | typedef V Value; |
---|
514 | typedef SubMapExtender<SubDigraphBase<DGR, NF, AF, ch>, |
---|
515 | LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, NodeMap<V>)> Parent; |
---|
516 | |
---|
517 | NodeMap(const SubDigraphBase<DGR, NF, AF, ch>& adaptor) |
---|
518 | : Parent(adaptor) {} |
---|
519 | NodeMap(const SubDigraphBase<DGR, NF, AF, ch>& adaptor, const V& value) |
---|
520 | : Parent(adaptor, value) {} |
---|
521 | |
---|
522 | private: |
---|
523 | NodeMap& operator=(const NodeMap& cmap) { |
---|
524 | return operator=<NodeMap>(cmap); |
---|
525 | } |
---|
526 | |
---|
527 | template <typename CMap> |
---|
528 | NodeMap& operator=(const CMap& cmap) { |
---|
529 | Parent::operator=(cmap); |
---|
530 | return *this; |
---|
531 | } |
---|
532 | }; |
---|
533 | |
---|
534 | template <typename V> |
---|
535 | class ArcMap |
---|
536 | : public SubMapExtender<SubDigraphBase<DGR, NF, AF, ch>, |
---|
537 | LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, ArcMap<V>)> { |
---|
538 | public: |
---|
539 | typedef V Value; |
---|
540 | typedef SubMapExtender<SubDigraphBase<DGR, NF, AF, ch>, |
---|
541 | LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, ArcMap<V>)> Parent; |
---|
542 | |
---|
543 | ArcMap(const SubDigraphBase<DGR, NF, AF, ch>& adaptor) |
---|
544 | : Parent(adaptor) {} |
---|
545 | ArcMap(const SubDigraphBase<DGR, NF, AF, ch>& adaptor, const V& value) |
---|
546 | : Parent(adaptor, value) {} |
---|
547 | |
---|
548 | private: |
---|
549 | ArcMap& operator=(const ArcMap& cmap) { |
---|
550 | return operator=<ArcMap>(cmap); |
---|
551 | } |
---|
552 | |
---|
553 | template <typename CMap> |
---|
554 | ArcMap& operator=(const CMap& cmap) { |
---|
555 | Parent::operator=(cmap); |
---|
556 | return *this; |
---|
557 | } |
---|
558 | }; |
---|
559 | |
---|
560 | }; |
---|
561 | |
---|
562 | template <typename DGR, typename NF, typename AF> |
---|
563 | class SubDigraphBase<DGR, NF, AF, false> |
---|
564 | : public DigraphAdaptorBase<DGR> { |
---|
565 | public: |
---|
566 | typedef DGR Digraph; |
---|
567 | typedef NF NodeFilterMap; |
---|
568 | typedef AF ArcFilterMap; |
---|
569 | |
---|
570 | typedef SubDigraphBase Adaptor; |
---|
571 | typedef DigraphAdaptorBase<Digraph> Parent; |
---|
572 | protected: |
---|
573 | NF* _node_filter; |
---|
574 | AF* _arc_filter; |
---|
575 | SubDigraphBase() |
---|
576 | : Parent(), _node_filter(0), _arc_filter(0) { } |
---|
577 | |
---|
578 | void initialize(DGR& digraph, NF& node_filter, AF& arc_filter) { |
---|
579 | Parent::initialize(digraph); |
---|
580 | _node_filter = &node_filter; |
---|
581 | _arc_filter = &arc_filter; |
---|
582 | } |
---|
583 | |
---|
584 | public: |
---|
585 | |
---|
586 | typedef typename Parent::Node Node; |
---|
587 | typedef typename Parent::Arc Arc; |
---|
588 | |
---|
589 | void first(Node& i) const { |
---|
590 | Parent::first(i); |
---|
591 | while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
---|
592 | } |
---|
593 | |
---|
594 | void first(Arc& i) const { |
---|
595 | Parent::first(i); |
---|
596 | while (i!=INVALID && !(*_arc_filter)[i]) Parent::next(i); |
---|
597 | } |
---|
598 | |
---|
599 | void firstIn(Arc& i, const Node& n) const { |
---|
600 | Parent::firstIn(i, n); |
---|
601 | while (i!=INVALID && !(*_arc_filter)[i]) Parent::nextIn(i); |
---|
602 | } |
---|
603 | |
---|
604 | void firstOut(Arc& i, const Node& n) const { |
---|
605 | Parent::firstOut(i, n); |
---|
606 | while (i!=INVALID && !(*_arc_filter)[i]) Parent::nextOut(i); |
---|
607 | } |
---|
608 | |
---|
609 | void next(Node& i) const { |
---|
610 | Parent::next(i); |
---|
611 | while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
---|
612 | } |
---|
613 | void next(Arc& i) const { |
---|
614 | Parent::next(i); |
---|
615 | while (i!=INVALID && !(*_arc_filter)[i]) Parent::next(i); |
---|
616 | } |
---|
617 | void nextIn(Arc& i) const { |
---|
618 | Parent::nextIn(i); |
---|
619 | while (i!=INVALID && !(*_arc_filter)[i]) Parent::nextIn(i); |
---|
620 | } |
---|
621 | |
---|
622 | void nextOut(Arc& i) const { |
---|
623 | Parent::nextOut(i); |
---|
624 | while (i!=INVALID && !(*_arc_filter)[i]) Parent::nextOut(i); |
---|
625 | } |
---|
626 | |
---|
627 | void status(const Node& n, bool v) const { _node_filter->set(n, v); } |
---|
628 | void status(const Arc& a, bool v) const { _arc_filter->set(a, v); } |
---|
629 | |
---|
630 | bool status(const Node& n) const { return (*_node_filter)[n]; } |
---|
631 | bool status(const Arc& a) const { return (*_arc_filter)[a]; } |
---|
632 | |
---|
633 | typedef False NodeNumTag; |
---|
634 | typedef False ArcNumTag; |
---|
635 | |
---|
636 | typedef FindArcTagIndicator<DGR> FindArcTag; |
---|
637 | Arc findArc(const Node& source, const Node& target, |
---|
638 | const Arc& prev = INVALID) const { |
---|
639 | if (!(*_node_filter)[source] || !(*_node_filter)[target]) { |
---|
640 | return INVALID; |
---|
641 | } |
---|
642 | Arc arc = Parent::findArc(source, target, prev); |
---|
643 | while (arc != INVALID && !(*_arc_filter)[arc]) { |
---|
644 | arc = Parent::findArc(source, target, arc); |
---|
645 | } |
---|
646 | return arc; |
---|
647 | } |
---|
648 | |
---|
649 | template <typename V> |
---|
650 | class NodeMap |
---|
651 | : public SubMapExtender<SubDigraphBase<DGR, NF, AF, false>, |
---|
652 | LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, NodeMap<V>)> { |
---|
653 | public: |
---|
654 | typedef V Value; |
---|
655 | typedef SubMapExtender<SubDigraphBase<DGR, NF, AF, false>, |
---|
656 | LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, NodeMap<V>)> Parent; |
---|
657 | |
---|
658 | NodeMap(const SubDigraphBase<DGR, NF, AF, false>& adaptor) |
---|
659 | : Parent(adaptor) {} |
---|
660 | NodeMap(const SubDigraphBase<DGR, NF, AF, false>& adaptor, const V& value) |
---|
661 | : Parent(adaptor, value) {} |
---|
662 | |
---|
663 | private: |
---|
664 | NodeMap& operator=(const NodeMap& cmap) { |
---|
665 | return operator=<NodeMap>(cmap); |
---|
666 | } |
---|
667 | |
---|
668 | template <typename CMap> |
---|
669 | NodeMap& operator=(const CMap& cmap) { |
---|
670 | Parent::operator=(cmap); |
---|
671 | return *this; |
---|
672 | } |
---|
673 | }; |
---|
674 | |
---|
675 | template <typename V> |
---|
676 | class ArcMap |
---|
677 | : public SubMapExtender<SubDigraphBase<DGR, NF, AF, false>, |
---|
678 | LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, ArcMap<V>)> { |
---|
679 | public: |
---|
680 | typedef V Value; |
---|
681 | typedef SubMapExtender<SubDigraphBase<DGR, NF, AF, false>, |
---|
682 | LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, ArcMap<V>)> Parent; |
---|
683 | |
---|
684 | ArcMap(const SubDigraphBase<DGR, NF, AF, false>& adaptor) |
---|
685 | : Parent(adaptor) {} |
---|
686 | ArcMap(const SubDigraphBase<DGR, NF, AF, false>& adaptor, const V& value) |
---|
687 | : Parent(adaptor, value) {} |
---|
688 | |
---|
689 | private: |
---|
690 | ArcMap& operator=(const ArcMap& cmap) { |
---|
691 | return operator=<ArcMap>(cmap); |
---|
692 | } |
---|
693 | |
---|
694 | template <typename CMap> |
---|
695 | ArcMap& operator=(const CMap& cmap) { |
---|
696 | Parent::operator=(cmap); |
---|
697 | return *this; |
---|
698 | } |
---|
699 | }; |
---|
700 | |
---|
701 | }; |
---|
702 | |
---|
703 | /// \ingroup graph_adaptors |
---|
704 | /// |
---|
705 | /// \brief Adaptor class for hiding nodes and arcs in a digraph |
---|
706 | /// |
---|
707 | /// SubDigraph can be used for hiding nodes and arcs in a digraph. |
---|
708 | /// A \c bool node map and a \c bool arc map must be specified, which |
---|
709 | /// define the filters for nodes and arcs. |
---|
710 | /// Only the nodes and arcs with \c true filter value are |
---|
711 | /// shown in the subdigraph. The arcs that are incident to hidden |
---|
712 | /// nodes are also filtered out. |
---|
713 | /// This adaptor conforms to the \ref concepts::Digraph "Digraph" concept. |
---|
714 | /// |
---|
715 | /// The adapted digraph can also be modified through this adaptor |
---|
716 | /// by adding or removing nodes or arcs, unless the \c GR template |
---|
717 | /// parameter is set to be \c const. |
---|
718 | /// |
---|
719 | /// \tparam DGR The type of the adapted digraph. |
---|
720 | /// It must conform to the \ref concepts::Digraph "Digraph" concept. |
---|
721 | /// It can also be specified to be \c const. |
---|
722 | /// \tparam NF The type of the node filter map. |
---|
723 | /// It must be a \c bool (or convertible) node map of the |
---|
724 | /// adapted digraph. The default type is |
---|
725 | /// \ref concepts::Digraph::NodeMap "DGR::NodeMap<bool>". |
---|
726 | /// \tparam AF The type of the arc filter map. |
---|
727 | /// It must be \c bool (or convertible) arc map of the |
---|
728 | /// adapted digraph. The default type is |
---|
729 | /// \ref concepts::Digraph::ArcMap "DGR::ArcMap<bool>". |
---|
730 | /// |
---|
731 | /// \note The \c Node and \c Arc types of this adaptor and the adapted |
---|
732 | /// digraph are convertible to each other. |
---|
733 | /// |
---|
734 | /// \see FilterNodes |
---|
735 | /// \see FilterArcs |
---|
736 | #ifdef DOXYGEN |
---|
737 | template<typename DGR, typename NF, typename AF> |
---|
738 | class SubDigraph { |
---|
739 | #else |
---|
740 | template<typename DGR, |
---|
741 | typename NF = typename DGR::template NodeMap<bool>, |
---|
742 | typename AF = typename DGR::template ArcMap<bool> > |
---|
743 | class SubDigraph : |
---|
744 | public DigraphAdaptorExtender<SubDigraphBase<DGR, NF, AF, true> > { |
---|
745 | #endif |
---|
746 | public: |
---|
747 | /// The type of the adapted digraph. |
---|
748 | typedef DGR Digraph; |
---|
749 | /// The type of the node filter map. |
---|
750 | typedef NF NodeFilterMap; |
---|
751 | /// The type of the arc filter map. |
---|
752 | typedef AF ArcFilterMap; |
---|
753 | |
---|
754 | typedef DigraphAdaptorExtender<SubDigraphBase<DGR, NF, AF, true> > |
---|
755 | Parent; |
---|
756 | |
---|
757 | typedef typename Parent::Node Node; |
---|
758 | typedef typename Parent::Arc Arc; |
---|
759 | |
---|
760 | protected: |
---|
761 | SubDigraph() { } |
---|
762 | public: |
---|
763 | |
---|
764 | /// \brief Constructor |
---|
765 | /// |
---|
766 | /// Creates a subdigraph for the given digraph with the |
---|
767 | /// given node and arc filter maps. |
---|
768 | SubDigraph(DGR& digraph, NF& node_filter, AF& arc_filter) { |
---|
769 | Parent::initialize(digraph, node_filter, arc_filter); |
---|
770 | } |
---|
771 | |
---|
772 | /// \brief Sets the status of the given node |
---|
773 | /// |
---|
774 | /// This function sets the status of the given node. |
---|
775 | /// It is done by simply setting the assigned value of \c n |
---|
776 | /// to \c v in the node filter map. |
---|
777 | void status(const Node& n, bool v) const { Parent::status(n, v); } |
---|
778 | |
---|
779 | /// \brief Sets the status of the given arc |
---|
780 | /// |
---|
781 | /// This function sets the status of the given arc. |
---|
782 | /// It is done by simply setting the assigned value of \c a |
---|
783 | /// to \c v in the arc filter map. |
---|
784 | void status(const Arc& a, bool v) const { Parent::status(a, v); } |
---|
785 | |
---|
786 | /// \brief Returns the status of the given node |
---|
787 | /// |
---|
788 | /// This function returns the status of the given node. |
---|
789 | /// It is \c true if the given node is enabled (i.e. not hidden). |
---|
790 | bool status(const Node& n) const { return Parent::status(n); } |
---|
791 | |
---|
792 | /// \brief Returns the status of the given arc |
---|
793 | /// |
---|
794 | /// This function returns the status of the given arc. |
---|
795 | /// It is \c true if the given arc is enabled (i.e. not hidden). |
---|
796 | bool status(const Arc& a) const { return Parent::status(a); } |
---|
797 | |
---|
798 | /// \brief Disables the given node |
---|
799 | /// |
---|
800 | /// This function disables the given node in the subdigraph, |
---|
801 | /// so the iteration jumps over it. |
---|
802 | /// It is the same as \ref status() "status(n, false)". |
---|
803 | void disable(const Node& n) const { Parent::status(n, false); } |
---|
804 | |
---|
805 | /// \brief Disables the given arc |
---|
806 | /// |
---|
807 | /// This function disables the given arc in the subdigraph, |
---|
808 | /// so the iteration jumps over it. |
---|
809 | /// It is the same as \ref status() "status(a, false)". |
---|
810 | void disable(const Arc& a) const { Parent::status(a, false); } |
---|
811 | |
---|
812 | /// \brief Enables the given node |
---|
813 | /// |
---|
814 | /// This function enables the given node in the subdigraph. |
---|
815 | /// It is the same as \ref status() "status(n, true)". |
---|
816 | void enable(const Node& n) const { Parent::status(n, true); } |
---|
817 | |
---|
818 | /// \brief Enables the given arc |
---|
819 | /// |
---|
820 | /// This function enables the given arc in the subdigraph. |
---|
821 | /// It is the same as \ref status() "status(a, true)". |
---|
822 | void enable(const Arc& a) const { Parent::status(a, true); } |
---|
823 | |
---|
824 | }; |
---|
825 | |
---|
826 | /// \brief Returns a read-only SubDigraph adaptor |
---|
827 | /// |
---|
828 | /// This function just returns a read-only \ref SubDigraph adaptor. |
---|
829 | /// \ingroup graph_adaptors |
---|
830 | /// \relates SubDigraph |
---|
831 | template<typename DGR, typename NF, typename AF> |
---|
832 | SubDigraph<const DGR, NF, AF> |
---|
833 | subDigraph(const DGR& digraph, |
---|
834 | NF& node_filter, AF& arc_filter) { |
---|
835 | return SubDigraph<const DGR, NF, AF> |
---|
836 | (digraph, node_filter, arc_filter); |
---|
837 | } |
---|
838 | |
---|
839 | template<typename DGR, typename NF, typename AF> |
---|
840 | SubDigraph<const DGR, const NF, AF> |
---|
841 | subDigraph(const DGR& digraph, |
---|
842 | const NF& node_filter, AF& arc_filter) { |
---|
843 | return SubDigraph<const DGR, const NF, AF> |
---|
844 | (digraph, node_filter, arc_filter); |
---|
845 | } |
---|
846 | |
---|
847 | template<typename DGR, typename NF, typename AF> |
---|
848 | SubDigraph<const DGR, NF, const AF> |
---|
849 | subDigraph(const DGR& digraph, |
---|
850 | NF& node_filter, const AF& arc_filter) { |
---|
851 | return SubDigraph<const DGR, NF, const AF> |
---|
852 | (digraph, node_filter, arc_filter); |
---|
853 | } |
---|
854 | |
---|
855 | template<typename DGR, typename NF, typename AF> |
---|
856 | SubDigraph<const DGR, const NF, const AF> |
---|
857 | subDigraph(const DGR& digraph, |
---|
858 | const NF& node_filter, const AF& arc_filter) { |
---|
859 | return SubDigraph<const DGR, const NF, const AF> |
---|
860 | (digraph, node_filter, arc_filter); |
---|
861 | } |
---|
862 | |
---|
863 | |
---|
864 | template <typename GR, typename NF, typename EF, bool ch = true> |
---|
865 | class SubGraphBase : public GraphAdaptorBase<GR> { |
---|
866 | public: |
---|
867 | typedef GR Graph; |
---|
868 | typedef NF NodeFilterMap; |
---|
869 | typedef EF EdgeFilterMap; |
---|
870 | |
---|
871 | typedef SubGraphBase Adaptor; |
---|
872 | typedef GraphAdaptorBase<GR> Parent; |
---|
873 | protected: |
---|
874 | |
---|
875 | NF* _node_filter; |
---|
876 | EF* _edge_filter; |
---|
877 | |
---|
878 | SubGraphBase() |
---|
879 | : Parent(), _node_filter(0), _edge_filter(0) { } |
---|
880 | |
---|
881 | void initialize(GR& graph, NF& node_filter, EF& edge_filter) { |
---|
882 | Parent::initialize(graph); |
---|
883 | _node_filter = &node_filter; |
---|
884 | _edge_filter = &edge_filter; |
---|
885 | } |
---|
886 | |
---|
887 | public: |
---|
888 | |
---|
889 | typedef typename Parent::Node Node; |
---|
890 | typedef typename Parent::Arc Arc; |
---|
891 | typedef typename Parent::Edge Edge; |
---|
892 | |
---|
893 | void first(Node& i) const { |
---|
894 | Parent::first(i); |
---|
895 | while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
---|
896 | } |
---|
897 | |
---|
898 | void first(Arc& i) const { |
---|
899 | Parent::first(i); |
---|
900 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
901 | || !(*_node_filter)[Parent::source(i)] |
---|
902 | || !(*_node_filter)[Parent::target(i)])) |
---|
903 | Parent::next(i); |
---|
904 | } |
---|
905 | |
---|
906 | void first(Edge& i) const { |
---|
907 | Parent::first(i); |
---|
908 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
909 | || !(*_node_filter)[Parent::u(i)] |
---|
910 | || !(*_node_filter)[Parent::v(i)])) |
---|
911 | Parent::next(i); |
---|
912 | } |
---|
913 | |
---|
914 | void firstIn(Arc& i, const Node& n) const { |
---|
915 | Parent::firstIn(i, n); |
---|
916 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
917 | || !(*_node_filter)[Parent::source(i)])) |
---|
918 | Parent::nextIn(i); |
---|
919 | } |
---|
920 | |
---|
921 | void firstOut(Arc& i, const Node& n) const { |
---|
922 | Parent::firstOut(i, n); |
---|
923 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
924 | || !(*_node_filter)[Parent::target(i)])) |
---|
925 | Parent::nextOut(i); |
---|
926 | } |
---|
927 | |
---|
928 | void firstInc(Edge& i, bool& d, const Node& n) const { |
---|
929 | Parent::firstInc(i, d, n); |
---|
930 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
931 | || !(*_node_filter)[Parent::u(i)] |
---|
932 | || !(*_node_filter)[Parent::v(i)])) |
---|
933 | Parent::nextInc(i, d); |
---|
934 | } |
---|
935 | |
---|
936 | void next(Node& i) const { |
---|
937 | Parent::next(i); |
---|
938 | while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
---|
939 | } |
---|
940 | |
---|
941 | void next(Arc& i) const { |
---|
942 | Parent::next(i); |
---|
943 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
944 | || !(*_node_filter)[Parent::source(i)] |
---|
945 | || !(*_node_filter)[Parent::target(i)])) |
---|
946 | Parent::next(i); |
---|
947 | } |
---|
948 | |
---|
949 | void next(Edge& i) const { |
---|
950 | Parent::next(i); |
---|
951 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
952 | || !(*_node_filter)[Parent::u(i)] |
---|
953 | || !(*_node_filter)[Parent::v(i)])) |
---|
954 | Parent::next(i); |
---|
955 | } |
---|
956 | |
---|
957 | void nextIn(Arc& i) const { |
---|
958 | Parent::nextIn(i); |
---|
959 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
960 | || !(*_node_filter)[Parent::source(i)])) |
---|
961 | Parent::nextIn(i); |
---|
962 | } |
---|
963 | |
---|
964 | void nextOut(Arc& i) const { |
---|
965 | Parent::nextOut(i); |
---|
966 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
967 | || !(*_node_filter)[Parent::target(i)])) |
---|
968 | Parent::nextOut(i); |
---|
969 | } |
---|
970 | |
---|
971 | void nextInc(Edge& i, bool& d) const { |
---|
972 | Parent::nextInc(i, d); |
---|
973 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
974 | || !(*_node_filter)[Parent::u(i)] |
---|
975 | || !(*_node_filter)[Parent::v(i)])) |
---|
976 | Parent::nextInc(i, d); |
---|
977 | } |
---|
978 | |
---|
979 | void status(const Node& n, bool v) const { _node_filter->set(n, v); } |
---|
980 | void status(const Edge& e, bool v) const { _edge_filter->set(e, v); } |
---|
981 | |
---|
982 | bool status(const Node& n) const { return (*_node_filter)[n]; } |
---|
983 | bool status(const Edge& e) const { return (*_edge_filter)[e]; } |
---|
984 | |
---|
985 | typedef False NodeNumTag; |
---|
986 | typedef False ArcNumTag; |
---|
987 | typedef False EdgeNumTag; |
---|
988 | |
---|
989 | typedef FindArcTagIndicator<Graph> FindArcTag; |
---|
990 | Arc findArc(const Node& u, const Node& v, |
---|
991 | const Arc& prev = INVALID) const { |
---|
992 | if (!(*_node_filter)[u] || !(*_node_filter)[v]) { |
---|
993 | return INVALID; |
---|
994 | } |
---|
995 | Arc arc = Parent::findArc(u, v, prev); |
---|
996 | while (arc != INVALID && !(*_edge_filter)[arc]) { |
---|
997 | arc = Parent::findArc(u, v, arc); |
---|
998 | } |
---|
999 | return arc; |
---|
1000 | } |
---|
1001 | |
---|
1002 | typedef FindEdgeTagIndicator<Graph> FindEdgeTag; |
---|
1003 | Edge findEdge(const Node& u, const Node& v, |
---|
1004 | const Edge& prev = INVALID) const { |
---|
1005 | if (!(*_node_filter)[u] || !(*_node_filter)[v]) { |
---|
1006 | return INVALID; |
---|
1007 | } |
---|
1008 | Edge edge = Parent::findEdge(u, v, prev); |
---|
1009 | while (edge != INVALID && !(*_edge_filter)[edge]) { |
---|
1010 | edge = Parent::findEdge(u, v, edge); |
---|
1011 | } |
---|
1012 | return edge; |
---|
1013 | } |
---|
1014 | |
---|
1015 | template <typename V> |
---|
1016 | class NodeMap |
---|
1017 | : public SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
---|
1018 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, NodeMap<V>)> { |
---|
1019 | public: |
---|
1020 | typedef V Value; |
---|
1021 | typedef SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
---|
1022 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, NodeMap<V>)> Parent; |
---|
1023 | |
---|
1024 | NodeMap(const SubGraphBase<GR, NF, EF, ch>& adaptor) |
---|
1025 | : Parent(adaptor) {} |
---|
1026 | NodeMap(const SubGraphBase<GR, NF, EF, ch>& adaptor, const V& value) |
---|
1027 | : Parent(adaptor, value) {} |
---|
1028 | |
---|
1029 | private: |
---|
1030 | NodeMap& operator=(const NodeMap& cmap) { |
---|
1031 | return operator=<NodeMap>(cmap); |
---|
1032 | } |
---|
1033 | |
---|
1034 | template <typename CMap> |
---|
1035 | NodeMap& operator=(const CMap& cmap) { |
---|
1036 | Parent::operator=(cmap); |
---|
1037 | return *this; |
---|
1038 | } |
---|
1039 | }; |
---|
1040 | |
---|
1041 | template <typename V> |
---|
1042 | class ArcMap |
---|
1043 | : public SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
---|
1044 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, ArcMap<V>)> { |
---|
1045 | public: |
---|
1046 | typedef V Value; |
---|
1047 | typedef SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
---|
1048 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, ArcMap<V>)> Parent; |
---|
1049 | |
---|
1050 | ArcMap(const SubGraphBase<GR, NF, EF, ch>& adaptor) |
---|
1051 | : Parent(adaptor) {} |
---|
1052 | ArcMap(const SubGraphBase<GR, NF, EF, ch>& adaptor, const V& value) |
---|
1053 | : Parent(adaptor, value) {} |
---|
1054 | |
---|
1055 | private: |
---|
1056 | ArcMap& operator=(const ArcMap& cmap) { |
---|
1057 | return operator=<ArcMap>(cmap); |
---|
1058 | } |
---|
1059 | |
---|
1060 | template <typename CMap> |
---|
1061 | ArcMap& operator=(const CMap& cmap) { |
---|
1062 | Parent::operator=(cmap); |
---|
1063 | return *this; |
---|
1064 | } |
---|
1065 | }; |
---|
1066 | |
---|
1067 | template <typename V> |
---|
1068 | class EdgeMap |
---|
1069 | : public SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
---|
1070 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, EdgeMap<V>)> { |
---|
1071 | public: |
---|
1072 | typedef V Value; |
---|
1073 | typedef SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
---|
1074 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, EdgeMap<V>)> Parent; |
---|
1075 | |
---|
1076 | EdgeMap(const SubGraphBase<GR, NF, EF, ch>& adaptor) |
---|
1077 | : Parent(adaptor) {} |
---|
1078 | |
---|
1079 | EdgeMap(const SubGraphBase<GR, NF, EF, ch>& adaptor, const V& value) |
---|
1080 | : Parent(adaptor, value) {} |
---|
1081 | |
---|
1082 | private: |
---|
1083 | EdgeMap& operator=(const EdgeMap& cmap) { |
---|
1084 | return operator=<EdgeMap>(cmap); |
---|
1085 | } |
---|
1086 | |
---|
1087 | template <typename CMap> |
---|
1088 | EdgeMap& operator=(const CMap& cmap) { |
---|
1089 | Parent::operator=(cmap); |
---|
1090 | return *this; |
---|
1091 | } |
---|
1092 | }; |
---|
1093 | |
---|
1094 | }; |
---|
1095 | |
---|
1096 | template <typename GR, typename NF, typename EF> |
---|
1097 | class SubGraphBase<GR, NF, EF, false> |
---|
1098 | : public GraphAdaptorBase<GR> { |
---|
1099 | public: |
---|
1100 | typedef GR Graph; |
---|
1101 | typedef NF NodeFilterMap; |
---|
1102 | typedef EF EdgeFilterMap; |
---|
1103 | |
---|
1104 | typedef SubGraphBase Adaptor; |
---|
1105 | typedef GraphAdaptorBase<GR> Parent; |
---|
1106 | protected: |
---|
1107 | NF* _node_filter; |
---|
1108 | EF* _edge_filter; |
---|
1109 | SubGraphBase() |
---|
1110 | : Parent(), _node_filter(0), _edge_filter(0) { } |
---|
1111 | |
---|
1112 | void initialize(GR& graph, NF& node_filter, EF& edge_filter) { |
---|
1113 | Parent::initialize(graph); |
---|
1114 | _node_filter = &node_filter; |
---|
1115 | _edge_filter = &edge_filter; |
---|
1116 | } |
---|
1117 | |
---|
1118 | public: |
---|
1119 | |
---|
1120 | typedef typename Parent::Node Node; |
---|
1121 | typedef typename Parent::Arc Arc; |
---|
1122 | typedef typename Parent::Edge Edge; |
---|
1123 | |
---|
1124 | void first(Node& i) const { |
---|
1125 | Parent::first(i); |
---|
1126 | while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
---|
1127 | } |
---|
1128 | |
---|
1129 | void first(Arc& i) const { |
---|
1130 | Parent::first(i); |
---|
1131 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::next(i); |
---|
1132 | } |
---|
1133 | |
---|
1134 | void first(Edge& i) const { |
---|
1135 | Parent::first(i); |
---|
1136 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::next(i); |
---|
1137 | } |
---|
1138 | |
---|
1139 | void firstIn(Arc& i, const Node& n) const { |
---|
1140 | Parent::firstIn(i, n); |
---|
1141 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextIn(i); |
---|
1142 | } |
---|
1143 | |
---|
1144 | void firstOut(Arc& i, const Node& n) const { |
---|
1145 | Parent::firstOut(i, n); |
---|
1146 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextOut(i); |
---|
1147 | } |
---|
1148 | |
---|
1149 | void firstInc(Edge& i, bool& d, const Node& n) const { |
---|
1150 | Parent::firstInc(i, d, n); |
---|
1151 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextInc(i, d); |
---|
1152 | } |
---|
1153 | |
---|
1154 | void next(Node& i) const { |
---|
1155 | Parent::next(i); |
---|
1156 | while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
---|
1157 | } |
---|
1158 | void next(Arc& i) const { |
---|
1159 | Parent::next(i); |
---|
1160 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::next(i); |
---|
1161 | } |
---|
1162 | void next(Edge& i) const { |
---|
1163 | Parent::next(i); |
---|
1164 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::next(i); |
---|
1165 | } |
---|
1166 | void nextIn(Arc& i) const { |
---|
1167 | Parent::nextIn(i); |
---|
1168 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextIn(i); |
---|
1169 | } |
---|
1170 | |
---|
1171 | void nextOut(Arc& i) const { |
---|
1172 | Parent::nextOut(i); |
---|
1173 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextOut(i); |
---|
1174 | } |
---|
1175 | void nextInc(Edge& i, bool& d) const { |
---|
1176 | Parent::nextInc(i, d); |
---|
1177 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextInc(i, d); |
---|
1178 | } |
---|
1179 | |
---|
1180 | void status(const Node& n, bool v) const { _node_filter->set(n, v); } |
---|
1181 | void status(const Edge& e, bool v) const { _edge_filter->set(e, v); } |
---|
1182 | |
---|
1183 | bool status(const Node& n) const { return (*_node_filter)[n]; } |
---|
1184 | bool status(const Edge& e) const { return (*_edge_filter)[e]; } |
---|
1185 | |
---|
1186 | typedef False NodeNumTag; |
---|
1187 | typedef False ArcNumTag; |
---|
1188 | typedef False EdgeNumTag; |
---|
1189 | |
---|
1190 | typedef FindArcTagIndicator<Graph> FindArcTag; |
---|
1191 | Arc findArc(const Node& u, const Node& v, |
---|
1192 | const Arc& prev = INVALID) const { |
---|
1193 | Arc arc = Parent::findArc(u, v, prev); |
---|
1194 | while (arc != INVALID && !(*_edge_filter)[arc]) { |
---|
1195 | arc = Parent::findArc(u, v, arc); |
---|
1196 | } |
---|
1197 | return arc; |
---|
1198 | } |
---|
1199 | |
---|
1200 | typedef FindEdgeTagIndicator<Graph> FindEdgeTag; |
---|
1201 | Edge findEdge(const Node& u, const Node& v, |
---|
1202 | const Edge& prev = INVALID) const { |
---|
1203 | Edge edge = Parent::findEdge(u, v, prev); |
---|
1204 | while (edge != INVALID && !(*_edge_filter)[edge]) { |
---|
1205 | edge = Parent::findEdge(u, v, edge); |
---|
1206 | } |
---|
1207 | return edge; |
---|
1208 | } |
---|
1209 | |
---|
1210 | template <typename V> |
---|
1211 | class NodeMap |
---|
1212 | : public SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
---|
1213 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, NodeMap<V>)> { |
---|
1214 | public: |
---|
1215 | typedef V Value; |
---|
1216 | typedef SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
---|
1217 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, NodeMap<V>)> Parent; |
---|
1218 | |
---|
1219 | NodeMap(const SubGraphBase<GR, NF, EF, false>& adaptor) |
---|
1220 | : Parent(adaptor) {} |
---|
1221 | NodeMap(const SubGraphBase<GR, NF, EF, false>& adaptor, const V& value) |
---|
1222 | : Parent(adaptor, value) {} |
---|
1223 | |
---|
1224 | private: |
---|
1225 | NodeMap& operator=(const NodeMap& cmap) { |
---|
1226 | return operator=<NodeMap>(cmap); |
---|
1227 | } |
---|
1228 | |
---|
1229 | template <typename CMap> |
---|
1230 | NodeMap& operator=(const CMap& cmap) { |
---|
1231 | Parent::operator=(cmap); |
---|
1232 | return *this; |
---|
1233 | } |
---|
1234 | }; |
---|
1235 | |
---|
1236 | template <typename V> |
---|
1237 | class ArcMap |
---|
1238 | : public SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
---|
1239 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, ArcMap<V>)> { |
---|
1240 | public: |
---|
1241 | typedef V Value; |
---|
1242 | typedef SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
---|
1243 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, ArcMap<V>)> Parent; |
---|
1244 | |
---|
1245 | ArcMap(const SubGraphBase<GR, NF, EF, false>& adaptor) |
---|
1246 | : Parent(adaptor) {} |
---|
1247 | ArcMap(const SubGraphBase<GR, NF, EF, false>& adaptor, const V& value) |
---|
1248 | : Parent(adaptor, value) {} |
---|
1249 | |
---|
1250 | private: |
---|
1251 | ArcMap& operator=(const ArcMap& cmap) { |
---|
1252 | return operator=<ArcMap>(cmap); |
---|
1253 | } |
---|
1254 | |
---|
1255 | template <typename CMap> |
---|
1256 | ArcMap& operator=(const CMap& cmap) { |
---|
1257 | Parent::operator=(cmap); |
---|
1258 | return *this; |
---|
1259 | } |
---|
1260 | }; |
---|
1261 | |
---|
1262 | template <typename V> |
---|
1263 | class EdgeMap |
---|
1264 | : public SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
---|
1265 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, EdgeMap<V>)> { |
---|
1266 | public: |
---|
1267 | typedef V Value; |
---|
1268 | typedef SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
---|
1269 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, EdgeMap<V>)> Parent; |
---|
1270 | |
---|
1271 | EdgeMap(const SubGraphBase<GR, NF, EF, false>& adaptor) |
---|
1272 | : Parent(adaptor) {} |
---|
1273 | |
---|
1274 | EdgeMap(const SubGraphBase<GR, NF, EF, false>& adaptor, const V& value) |
---|
1275 | : Parent(adaptor, value) {} |
---|
1276 | |
---|
1277 | private: |
---|
1278 | EdgeMap& operator=(const EdgeMap& cmap) { |
---|
1279 | return operator=<EdgeMap>(cmap); |
---|
1280 | } |
---|
1281 | |
---|
1282 | template <typename CMap> |
---|
1283 | EdgeMap& operator=(const CMap& cmap) { |
---|
1284 | Parent::operator=(cmap); |
---|
1285 | return *this; |
---|
1286 | } |
---|
1287 | }; |
---|
1288 | |
---|
1289 | }; |
---|
1290 | |
---|
1291 | /// \ingroup graph_adaptors |
---|
1292 | /// |
---|
1293 | /// \brief Adaptor class for hiding nodes and edges in an undirected |
---|
1294 | /// graph. |
---|
1295 | /// |
---|
1296 | /// SubGraph can be used for hiding nodes and edges in a graph. |
---|
1297 | /// A \c bool node map and a \c bool edge map must be specified, which |
---|
1298 | /// define the filters for nodes and edges. |
---|
1299 | /// Only the nodes and edges with \c true filter value are |
---|
1300 | /// shown in the subgraph. The edges that are incident to hidden |
---|
1301 | /// nodes are also filtered out. |
---|
1302 | /// This adaptor conforms to the \ref concepts::Graph "Graph" concept. |
---|
1303 | /// |
---|
1304 | /// The adapted graph can also be modified through this adaptor |
---|
1305 | /// by adding or removing nodes or edges, unless the \c GR template |
---|
1306 | /// parameter is set to be \c const. |
---|
1307 | /// |
---|
1308 | /// \tparam GR The type of the adapted graph. |
---|
1309 | /// It must conform to the \ref concepts::Graph "Graph" concept. |
---|
1310 | /// It can also be specified to be \c const. |
---|
1311 | /// \tparam NF The type of the node filter map. |
---|
1312 | /// It must be a \c bool (or convertible) node map of the |
---|
1313 | /// adapted graph. The default type is |
---|
1314 | /// \ref concepts::Graph::NodeMap "GR::NodeMap<bool>". |
---|
1315 | /// \tparam EF The type of the edge filter map. |
---|
1316 | /// It must be a \c bool (or convertible) edge map of the |
---|
1317 | /// adapted graph. The default type is |
---|
1318 | /// \ref concepts::Graph::EdgeMap "GR::EdgeMap<bool>". |
---|
1319 | /// |
---|
1320 | /// \note The \c Node, \c Edge and \c Arc types of this adaptor and the |
---|
1321 | /// adapted graph are convertible to each other. |
---|
1322 | /// |
---|
1323 | /// \see FilterNodes |
---|
1324 | /// \see FilterEdges |
---|
1325 | #ifdef DOXYGEN |
---|
1326 | template<typename GR, typename NF, typename EF> |
---|
1327 | class SubGraph { |
---|
1328 | #else |
---|
1329 | template<typename GR, |
---|
1330 | typename NF = typename GR::template NodeMap<bool>, |
---|
1331 | typename EF = typename GR::template EdgeMap<bool> > |
---|
1332 | class SubGraph : |
---|
1333 | public GraphAdaptorExtender<SubGraphBase<GR, NF, EF, true> > { |
---|
1334 | #endif |
---|
1335 | public: |
---|
1336 | /// The type of the adapted graph. |
---|
1337 | typedef GR Graph; |
---|
1338 | /// The type of the node filter map. |
---|
1339 | typedef NF NodeFilterMap; |
---|
1340 | /// The type of the edge filter map. |
---|
1341 | typedef EF EdgeFilterMap; |
---|
1342 | |
---|
1343 | typedef GraphAdaptorExtender<SubGraphBase<GR, NF, EF, true> > |
---|
1344 | Parent; |
---|
1345 | |
---|
1346 | typedef typename Parent::Node Node; |
---|
1347 | typedef typename Parent::Edge Edge; |
---|
1348 | |
---|
1349 | protected: |
---|
1350 | SubGraph() { } |
---|
1351 | public: |
---|
1352 | |
---|
1353 | /// \brief Constructor |
---|
1354 | /// |
---|
1355 | /// Creates a subgraph for the given graph with the given node |
---|
1356 | /// and edge filter maps. |
---|
1357 | SubGraph(GR& graph, NF& node_filter, EF& edge_filter) { |
---|
1358 | initialize(graph, node_filter, edge_filter); |
---|
1359 | } |
---|
1360 | |
---|
1361 | /// \brief Sets the status of the given node |
---|
1362 | /// |
---|
1363 | /// This function sets the status of the given node. |
---|
1364 | /// It is done by simply setting the assigned value of \c n |
---|
1365 | /// to \c v in the node filter map. |
---|
1366 | void status(const Node& n, bool v) const { Parent::status(n, v); } |
---|
1367 | |
---|
1368 | /// \brief Sets the status of the given edge |
---|
1369 | /// |
---|
1370 | /// This function sets the status of the given edge. |
---|
1371 | /// It is done by simply setting the assigned value of \c e |
---|
1372 | /// to \c v in the edge filter map. |
---|
1373 | void status(const Edge& e, bool v) const { Parent::status(e, v); } |
---|
1374 | |
---|
1375 | /// \brief Returns the status of the given node |
---|
1376 | /// |
---|
1377 | /// This function returns the status of the given node. |
---|
1378 | /// It is \c true if the given node is enabled (i.e. not hidden). |
---|
1379 | bool status(const Node& n) const { return Parent::status(n); } |
---|
1380 | |
---|
1381 | /// \brief Returns the status of the given edge |
---|
1382 | /// |
---|
1383 | /// This function returns the status of the given edge. |
---|
1384 | /// It is \c true if the given edge is enabled (i.e. not hidden). |
---|
1385 | bool status(const Edge& e) const { return Parent::status(e); } |
---|
1386 | |
---|
1387 | /// \brief Disables the given node |
---|
1388 | /// |
---|
1389 | /// This function disables the given node in the subdigraph, |
---|
1390 | /// so the iteration jumps over it. |
---|
1391 | /// It is the same as \ref status() "status(n, false)". |
---|
1392 | void disable(const Node& n) const { Parent::status(n, false); } |
---|
1393 | |
---|
1394 | /// \brief Disables the given edge |
---|
1395 | /// |
---|
1396 | /// This function disables the given edge in the subgraph, |
---|
1397 | /// so the iteration jumps over it. |
---|
1398 | /// It is the same as \ref status() "status(e, false)". |
---|
1399 | void disable(const Edge& e) const { Parent::status(e, false); } |
---|
1400 | |
---|
1401 | /// \brief Enables the given node |
---|
1402 | /// |
---|
1403 | /// This function enables the given node in the subdigraph. |
---|
1404 | /// It is the same as \ref status() "status(n, true)". |
---|
1405 | void enable(const Node& n) const { Parent::status(n, true); } |
---|
1406 | |
---|
1407 | /// \brief Enables the given edge |
---|
1408 | /// |
---|
1409 | /// This function enables the given edge in the subgraph. |
---|
1410 | /// It is the same as \ref status() "status(e, true)". |
---|
1411 | void enable(const Edge& e) const { Parent::status(e, true); } |
---|
1412 | |
---|
1413 | }; |
---|
1414 | |
---|
1415 | /// \brief Returns a read-only SubGraph adaptor |
---|
1416 | /// |
---|
1417 | /// This function just returns a read-only \ref SubGraph adaptor. |
---|
1418 | /// \ingroup graph_adaptors |
---|
1419 | /// \relates SubGraph |
---|
1420 | template<typename GR, typename NF, typename EF> |
---|
1421 | SubGraph<const GR, NF, EF> |
---|
1422 | subGraph(const GR& graph, NF& node_filter, EF& edge_filter) { |
---|
1423 | return SubGraph<const GR, NF, EF> |
---|
1424 | (graph, node_filter, edge_filter); |
---|
1425 | } |
---|
1426 | |
---|
1427 | template<typename GR, typename NF, typename EF> |
---|
1428 | SubGraph<const GR, const NF, EF> |
---|
1429 | subGraph(const GR& graph, const NF& node_filter, EF& edge_filter) { |
---|
1430 | return SubGraph<const GR, const NF, EF> |
---|
1431 | (graph, node_filter, edge_filter); |
---|
1432 | } |
---|
1433 | |
---|
1434 | template<typename GR, typename NF, typename EF> |
---|
1435 | SubGraph<const GR, NF, const EF> |
---|
1436 | subGraph(const GR& graph, NF& node_filter, const EF& edge_filter) { |
---|
1437 | return SubGraph<const GR, NF, const EF> |
---|
1438 | (graph, node_filter, edge_filter); |
---|
1439 | } |
---|
1440 | |
---|
1441 | template<typename GR, typename NF, typename EF> |
---|
1442 | SubGraph<const GR, const NF, const EF> |
---|
1443 | subGraph(const GR& graph, const NF& node_filter, const EF& edge_filter) { |
---|
1444 | return SubGraph<const GR, const NF, const EF> |
---|
1445 | (graph, node_filter, edge_filter); |
---|
1446 | } |
---|
1447 | |
---|
1448 | |
---|
1449 | /// \ingroup graph_adaptors |
---|
1450 | /// |
---|
1451 | /// \brief Adaptor class for hiding nodes in a digraph or a graph. |
---|
1452 | /// |
---|
1453 | /// FilterNodes adaptor can be used for hiding nodes in a digraph or a |
---|
1454 | /// graph. A \c bool node map must be specified, which defines the filter |
---|
1455 | /// for the nodes. Only the nodes with \c true filter value and the |
---|
1456 | /// arcs/edges incident to nodes both with \c true filter value are shown |
---|
1457 | /// in the subgraph. This adaptor conforms to the \ref concepts::Digraph |
---|
1458 | /// "Digraph" concept or the \ref concepts::Graph "Graph" concept |
---|
1459 | /// depending on the \c GR template parameter. |
---|
1460 | /// |
---|
1461 | /// The adapted (di)graph can also be modified through this adaptor |
---|
1462 | /// by adding or removing nodes or arcs/edges, unless the \c GR template |
---|
1463 | /// parameter is set to be \c const. |
---|
1464 | /// |
---|
1465 | /// \tparam GR The type of the adapted digraph or graph. |
---|
1466 | /// It must conform to the \ref concepts::Digraph "Digraph" concept |
---|
1467 | /// or the \ref concepts::Graph "Graph" concept. |
---|
1468 | /// It can also be specified to be \c const. |
---|
1469 | /// \tparam NF The type of the node filter map. |
---|
1470 | /// It must be a \c bool (or convertible) node map of the |
---|
1471 | /// adapted (di)graph. The default type is |
---|
1472 | /// \ref concepts::Graph::NodeMap "GR::NodeMap<bool>". |
---|
1473 | /// |
---|
1474 | /// \note The \c Node and <tt>Arc/Edge</tt> types of this adaptor and the |
---|
1475 | /// adapted (di)graph are convertible to each other. |
---|
1476 | #ifdef DOXYGEN |
---|
1477 | template<typename GR, typename NF> |
---|
1478 | class FilterNodes { |
---|
1479 | #else |
---|
1480 | template<typename GR, |
---|
1481 | typename NF = typename GR::template NodeMap<bool>, |
---|
1482 | typename Enable = void> |
---|
1483 | class FilterNodes : |
---|
1484 | public DigraphAdaptorExtender< |
---|
1485 | SubDigraphBase<GR, NF, ConstMap<typename GR::Arc, Const<bool, true> >, |
---|
1486 | true> > { |
---|
1487 | #endif |
---|
1488 | public: |
---|
1489 | |
---|
1490 | typedef GR Digraph; |
---|
1491 | typedef NF NodeFilterMap; |
---|
1492 | |
---|
1493 | typedef DigraphAdaptorExtender< |
---|
1494 | SubDigraphBase<GR, NF, ConstMap<typename GR::Arc, Const<bool, true> >, |
---|
1495 | true> > Parent; |
---|
1496 | |
---|
1497 | typedef typename Parent::Node Node; |
---|
1498 | |
---|
1499 | protected: |
---|
1500 | ConstMap<typename Digraph::Arc, Const<bool, true> > const_true_map; |
---|
1501 | |
---|
1502 | FilterNodes() : const_true_map() {} |
---|
1503 | |
---|
1504 | public: |
---|
1505 | |
---|
1506 | /// \brief Constructor |
---|
1507 | /// |
---|
1508 | /// Creates a subgraph for the given digraph or graph with the |
---|
1509 | /// given node filter map. |
---|
1510 | FilterNodes(GR& graph, NF& node_filter) |
---|
1511 | : Parent(), const_true_map() |
---|
1512 | { |
---|
1513 | Parent::initialize(graph, node_filter, const_true_map); |
---|
1514 | } |
---|
1515 | |
---|
1516 | /// \brief Sets the status of the given node |
---|
1517 | /// |
---|
1518 | /// This function sets the status of the given node. |
---|
1519 | /// It is done by simply setting the assigned value of \c n |
---|
1520 | /// to \c v in the node filter map. |
---|
1521 | void status(const Node& n, bool v) const { Parent::status(n, v); } |
---|
1522 | |
---|
1523 | /// \brief Returns the status of the given node |
---|
1524 | /// |
---|
1525 | /// This function returns the status of the given node. |
---|
1526 | /// It is \c true if the given node is enabled (i.e. not hidden). |
---|
1527 | bool status(const Node& n) const { return Parent::status(n); } |
---|
1528 | |
---|
1529 | /// \brief Disables the given node |
---|
1530 | /// |
---|
1531 | /// This function disables the given node, so the iteration |
---|
1532 | /// jumps over it. |
---|
1533 | /// It is the same as \ref status() "status(n, false)". |
---|
1534 | void disable(const Node& n) const { Parent::status(n, false); } |
---|
1535 | |
---|
1536 | /// \brief Enables the given node |
---|
1537 | /// |
---|
1538 | /// This function enables the given node. |
---|
1539 | /// It is the same as \ref status() "status(n, true)". |
---|
1540 | void enable(const Node& n) const { Parent::status(n, true); } |
---|
1541 | |
---|
1542 | }; |
---|
1543 | |
---|
1544 | template<typename GR, typename NF> |
---|
1545 | class FilterNodes<GR, NF, |
---|
1546 | typename enable_if<UndirectedTagIndicator<GR> >::type> : |
---|
1547 | public GraphAdaptorExtender< |
---|
1548 | SubGraphBase<GR, NF, ConstMap<typename GR::Edge, Const<bool, true> >, |
---|
1549 | true> > { |
---|
1550 | |
---|
1551 | public: |
---|
1552 | typedef GR Graph; |
---|
1553 | typedef NF NodeFilterMap; |
---|
1554 | typedef GraphAdaptorExtender< |
---|
1555 | SubGraphBase<GR, NF, ConstMap<typename GR::Edge, Const<bool, true> >, |
---|
1556 | true> > Parent; |
---|
1557 | |
---|
1558 | typedef typename Parent::Node Node; |
---|
1559 | protected: |
---|
1560 | ConstMap<typename GR::Edge, Const<bool, true> > const_true_map; |
---|
1561 | |
---|
1562 | FilterNodes() : const_true_map() {} |
---|
1563 | |
---|
1564 | public: |
---|
1565 | |
---|
1566 | FilterNodes(GR& graph, NodeFilterMap& node_filter) : |
---|
1567 | Parent(), const_true_map() { |
---|
1568 | Parent::initialize(graph, node_filter, const_true_map); |
---|
1569 | } |
---|
1570 | |
---|
1571 | void status(const Node& n, bool v) const { Parent::status(n, v); } |
---|
1572 | bool status(const Node& n) const { return Parent::status(n); } |
---|
1573 | void disable(const Node& n) const { Parent::status(n, false); } |
---|
1574 | void enable(const Node& n) const { Parent::status(n, true); } |
---|
1575 | |
---|
1576 | }; |
---|
1577 | |
---|
1578 | |
---|
1579 | /// \brief Returns a read-only FilterNodes adaptor |
---|
1580 | /// |
---|
1581 | /// This function just returns a read-only \ref FilterNodes adaptor. |
---|
1582 | /// \ingroup graph_adaptors |
---|
1583 | /// \relates FilterNodes |
---|
1584 | template<typename GR, typename NF> |
---|
1585 | FilterNodes<const GR, NF> |
---|
1586 | filterNodes(const GR& graph, NF& node_filter) { |
---|
1587 | return FilterNodes<const GR, NF>(graph, node_filter); |
---|
1588 | } |
---|
1589 | |
---|
1590 | template<typename GR, typename NF> |
---|
1591 | FilterNodes<const GR, const NF> |
---|
1592 | filterNodes(const GR& graph, const NF& node_filter) { |
---|
1593 | return FilterNodes<const GR, const NF>(graph, node_filter); |
---|
1594 | } |
---|
1595 | |
---|
1596 | /// \ingroup graph_adaptors |
---|
1597 | /// |
---|
1598 | /// \brief Adaptor class for hiding arcs in a digraph. |
---|
1599 | /// |
---|
1600 | /// FilterArcs adaptor can be used for hiding arcs in a digraph. |
---|
1601 | /// A \c bool arc map must be specified, which defines the filter for |
---|
1602 | /// the arcs. Only the arcs with \c true filter value are shown in the |
---|
1603 | /// subdigraph. This adaptor conforms to the \ref concepts::Digraph |
---|
1604 | /// "Digraph" concept. |
---|
1605 | /// |
---|
1606 | /// The adapted digraph can also be modified through this adaptor |
---|
1607 | /// by adding or removing nodes or arcs, unless the \c GR template |
---|
1608 | /// parameter is set to be \c const. |
---|
1609 | /// |
---|
1610 | /// \tparam DGR The type of the adapted digraph. |
---|
1611 | /// It must conform to the \ref concepts::Digraph "Digraph" concept. |
---|
1612 | /// It can also be specified to be \c const. |
---|
1613 | /// \tparam AF The type of the arc filter map. |
---|
1614 | /// It must be a \c bool (or convertible) arc map of the |
---|
1615 | /// adapted digraph. The default type is |
---|
1616 | /// \ref concepts::Digraph::ArcMap "DGR::ArcMap<bool>". |
---|
1617 | /// |
---|
1618 | /// \note The \c Node and \c Arc types of this adaptor and the adapted |
---|
1619 | /// digraph are convertible to each other. |
---|
1620 | #ifdef DOXYGEN |
---|
1621 | template<typename DGR, |
---|
1622 | typename AF> |
---|
1623 | class FilterArcs { |
---|
1624 | #else |
---|
1625 | template<typename DGR, |
---|
1626 | typename AF = typename DGR::template ArcMap<bool> > |
---|
1627 | class FilterArcs : |
---|
1628 | public DigraphAdaptorExtender< |
---|
1629 | SubDigraphBase<DGR, ConstMap<typename DGR::Node, Const<bool, true> >, |
---|
1630 | AF, false> > { |
---|
1631 | #endif |
---|
1632 | public: |
---|
1633 | /// The type of the adapted digraph. |
---|
1634 | typedef DGR Digraph; |
---|
1635 | /// The type of the arc filter map. |
---|
1636 | typedef AF ArcFilterMap; |
---|
1637 | |
---|
1638 | typedef DigraphAdaptorExtender< |
---|
1639 | SubDigraphBase<DGR, ConstMap<typename DGR::Node, Const<bool, true> >, |
---|
1640 | AF, false> > Parent; |
---|
1641 | |
---|
1642 | typedef typename Parent::Arc Arc; |
---|
1643 | |
---|
1644 | protected: |
---|
1645 | ConstMap<typename DGR::Node, Const<bool, true> > const_true_map; |
---|
1646 | |
---|
1647 | FilterArcs() : const_true_map() {} |
---|
1648 | |
---|
1649 | public: |
---|
1650 | |
---|
1651 | /// \brief Constructor |
---|
1652 | /// |
---|
1653 | /// Creates a subdigraph for the given digraph with the given arc |
---|
1654 | /// filter map. |
---|
1655 | FilterArcs(DGR& digraph, ArcFilterMap& arc_filter) |
---|
1656 | : Parent(), const_true_map() { |
---|
1657 | Parent::initialize(digraph, const_true_map, arc_filter); |
---|
1658 | } |
---|
1659 | |
---|
1660 | /// \brief Sets the status of the given arc |
---|
1661 | /// |
---|
1662 | /// This function sets the status of the given arc. |
---|
1663 | /// It is done by simply setting the assigned value of \c a |
---|
1664 | /// to \c v in the arc filter map. |
---|
1665 | void status(const Arc& a, bool v) const { Parent::status(a, v); } |
---|
1666 | |
---|
1667 | /// \brief Returns the status of the given arc |
---|
1668 | /// |
---|
1669 | /// This function returns the status of the given arc. |
---|
1670 | /// It is \c true if the given arc is enabled (i.e. not hidden). |
---|
1671 | bool status(const Arc& a) const { return Parent::status(a); } |
---|
1672 | |
---|
1673 | /// \brief Disables the given arc |
---|
1674 | /// |
---|
1675 | /// This function disables the given arc in the subdigraph, |
---|
1676 | /// so the iteration jumps over it. |
---|
1677 | /// It is the same as \ref status() "status(a, false)". |
---|
1678 | void disable(const Arc& a) const { Parent::status(a, false); } |
---|
1679 | |
---|
1680 | /// \brief Enables the given arc |
---|
1681 | /// |
---|
1682 | /// This function enables the given arc in the subdigraph. |
---|
1683 | /// It is the same as \ref status() "status(a, true)". |
---|
1684 | void enable(const Arc& a) const { Parent::status(a, true); } |
---|
1685 | |
---|
1686 | }; |
---|
1687 | |
---|
1688 | /// \brief Returns a read-only FilterArcs adaptor |
---|
1689 | /// |
---|
1690 | /// This function just returns a read-only \ref FilterArcs adaptor. |
---|
1691 | /// \ingroup graph_adaptors |
---|
1692 | /// \relates FilterArcs |
---|
1693 | template<typename DGR, typename AF> |
---|
1694 | FilterArcs<const DGR, AF> |
---|
1695 | filterArcs(const DGR& digraph, AF& arc_filter) { |
---|
1696 | return FilterArcs<const DGR, AF>(digraph, arc_filter); |
---|
1697 | } |
---|
1698 | |
---|
1699 | template<typename DGR, typename AF> |
---|
1700 | FilterArcs<const DGR, const AF> |
---|
1701 | filterArcs(const DGR& digraph, const AF& arc_filter) { |
---|
1702 | return FilterArcs<const DGR, const AF>(digraph, arc_filter); |
---|
1703 | } |
---|
1704 | |
---|
1705 | /// \ingroup graph_adaptors |
---|
1706 | /// |
---|
1707 | /// \brief Adaptor class for hiding edges in a graph. |
---|
1708 | /// |
---|
1709 | /// FilterEdges adaptor can be used for hiding edges in a graph. |
---|
1710 | /// A \c bool edge map must be specified, which defines the filter for |
---|
1711 | /// the edges. Only the edges with \c true filter value are shown in the |
---|
1712 | /// subgraph. This adaptor conforms to the \ref concepts::Graph |
---|
1713 | /// "Graph" concept. |
---|
1714 | /// |
---|
1715 | /// The adapted graph can also be modified through this adaptor |
---|
1716 | /// by adding or removing nodes or edges, unless the \c GR template |
---|
1717 | /// parameter is set to be \c const. |
---|
1718 | /// |
---|
1719 | /// \tparam GR The type of the adapted graph. |
---|
1720 | /// It must conform to the \ref concepts::Graph "Graph" concept. |
---|
1721 | /// It can also be specified to be \c const. |
---|
1722 | /// \tparam EF The type of the edge filter map. |
---|
1723 | /// It must be a \c bool (or convertible) edge map of the |
---|
1724 | /// adapted graph. The default type is |
---|
1725 | /// \ref concepts::Graph::EdgeMap "GR::EdgeMap<bool>". |
---|
1726 | /// |
---|
1727 | /// \note The \c Node, \c Edge and \c Arc types of this adaptor and the |
---|
1728 | /// adapted graph are convertible to each other. |
---|
1729 | #ifdef DOXYGEN |
---|
1730 | template<typename GR, |
---|
1731 | typename EF> |
---|
1732 | class FilterEdges { |
---|
1733 | #else |
---|
1734 | template<typename GR, |
---|
1735 | typename EF = typename GR::template EdgeMap<bool> > |
---|
1736 | class FilterEdges : |
---|
1737 | public GraphAdaptorExtender< |
---|
1738 | SubGraphBase<GR, ConstMap<typename GR::Node, Const<bool, true> >, |
---|
1739 | EF, false> > { |
---|
1740 | #endif |
---|
1741 | public: |
---|
1742 | /// The type of the adapted graph. |
---|
1743 | typedef GR Graph; |
---|
1744 | /// The type of the edge filter map. |
---|
1745 | typedef EF EdgeFilterMap; |
---|
1746 | |
---|
1747 | typedef GraphAdaptorExtender< |
---|
1748 | SubGraphBase<GR, ConstMap<typename GR::Node, Const<bool, true > >, |
---|
1749 | EF, false> > Parent; |
---|
1750 | |
---|
1751 | typedef typename Parent::Edge Edge; |
---|
1752 | |
---|
1753 | protected: |
---|
1754 | ConstMap<typename GR::Node, Const<bool, true> > const_true_map; |
---|
1755 | |
---|
1756 | FilterEdges() : const_true_map(true) { |
---|
1757 | Parent::setNodeFilterMap(const_true_map); |
---|
1758 | } |
---|
1759 | |
---|
1760 | public: |
---|
1761 | |
---|
1762 | /// \brief Constructor |
---|
1763 | /// |
---|
1764 | /// Creates a subgraph for the given graph with the given edge |
---|
1765 | /// filter map. |
---|
1766 | FilterEdges(GR& graph, EF& edge_filter) |
---|
1767 | : Parent(), const_true_map() { |
---|
1768 | Parent::initialize(graph, const_true_map, edge_filter); |
---|
1769 | } |
---|
1770 | |
---|
1771 | /// \brief Sets the status of the given edge |
---|
1772 | /// |
---|
1773 | /// This function sets the status of the given edge. |
---|
1774 | /// It is done by simply setting the assigned value of \c e |
---|
1775 | /// to \c v in the edge filter map. |
---|
1776 | void status(const Edge& e, bool v) const { Parent::status(e, v); } |
---|
1777 | |
---|
1778 | /// \brief Returns the status of the given edge |
---|
1779 | /// |
---|
1780 | /// This function returns the status of the given edge. |
---|
1781 | /// It is \c true if the given edge is enabled (i.e. not hidden). |
---|
1782 | bool status(const Edge& e) const { return Parent::status(e); } |
---|
1783 | |
---|
1784 | /// \brief Disables the given edge |
---|
1785 | /// |
---|
1786 | /// This function disables the given edge in the subgraph, |
---|
1787 | /// so the iteration jumps over it. |
---|
1788 | /// It is the same as \ref status() "status(e, false)". |
---|
1789 | void disable(const Edge& e) const { Parent::status(e, false); } |
---|
1790 | |
---|
1791 | /// \brief Enables the given edge |
---|
1792 | /// |
---|
1793 | /// This function enables the given edge in the subgraph. |
---|
1794 | /// It is the same as \ref status() "status(e, true)". |
---|
1795 | void enable(const Edge& e) const { Parent::status(e, true); } |
---|
1796 | |
---|
1797 | }; |
---|
1798 | |
---|
1799 | /// \brief Returns a read-only FilterEdges adaptor |
---|
1800 | /// |
---|
1801 | /// This function just returns a read-only \ref FilterEdges adaptor. |
---|
1802 | /// \ingroup graph_adaptors |
---|
1803 | /// \relates FilterEdges |
---|
1804 | template<typename GR, typename EF> |
---|
1805 | FilterEdges<const GR, EF> |
---|
1806 | filterEdges(const GR& graph, EF& edge_filter) { |
---|
1807 | return FilterEdges<const GR, EF>(graph, edge_filter); |
---|
1808 | } |
---|
1809 | |
---|
1810 | template<typename GR, typename EF> |
---|
1811 | FilterEdges<const GR, const EF> |
---|
1812 | filterEdges(const GR& graph, const EF& edge_filter) { |
---|
1813 | return FilterEdges<const GR, const EF>(graph, edge_filter); |
---|
1814 | } |
---|
1815 | |
---|
1816 | |
---|
1817 | template <typename DGR> |
---|
1818 | class UndirectorBase { |
---|
1819 | public: |
---|
1820 | typedef DGR Digraph; |
---|
1821 | typedef UndirectorBase Adaptor; |
---|
1822 | |
---|
1823 | typedef True UndirectedTag; |
---|
1824 | |
---|
1825 | typedef typename Digraph::Arc Edge; |
---|
1826 | typedef typename Digraph::Node Node; |
---|
1827 | |
---|
1828 | class Arc : public Edge { |
---|
1829 | friend class UndirectorBase; |
---|
1830 | protected: |
---|
1831 | bool _forward; |
---|
1832 | |
---|
1833 | Arc(const Edge& edge, bool forward) : |
---|
1834 | Edge(edge), _forward(forward) {} |
---|
1835 | |
---|
1836 | public: |
---|
1837 | Arc() {} |
---|
1838 | |
---|
1839 | Arc(Invalid) : Edge(INVALID), _forward(true) {} |
---|
1840 | |
---|
1841 | bool operator==(const Arc &other) const { |
---|
1842 | return _forward == other._forward && |
---|
1843 | static_cast<const Edge&>(*this) == static_cast<const Edge&>(other); |
---|
1844 | } |
---|
1845 | bool operator!=(const Arc &other) const { |
---|
1846 | return _forward != other._forward || |
---|
1847 | static_cast<const Edge&>(*this) != static_cast<const Edge&>(other); |
---|
1848 | } |
---|
1849 | bool operator<(const Arc &other) const { |
---|
1850 | return _forward < other._forward || |
---|
1851 | (_forward == other._forward && |
---|
1852 | static_cast<const Edge&>(*this) < static_cast<const Edge&>(other)); |
---|
1853 | } |
---|
1854 | }; |
---|
1855 | |
---|
1856 | void first(Node& n) const { |
---|
1857 | _digraph->first(n); |
---|
1858 | } |
---|
1859 | |
---|
1860 | void next(Node& n) const { |
---|
1861 | _digraph->next(n); |
---|
1862 | } |
---|
1863 | |
---|
1864 | void first(Arc& a) const { |
---|
1865 | _digraph->first(a); |
---|
1866 | a._forward = true; |
---|
1867 | } |
---|
1868 | |
---|
1869 | void next(Arc& a) const { |
---|
1870 | if (a._forward) { |
---|
1871 | a._forward = false; |
---|
1872 | } else { |
---|
1873 | _digraph->next(a); |
---|
1874 | a._forward = true; |
---|
1875 | } |
---|
1876 | } |
---|
1877 | |
---|
1878 | void first(Edge& e) const { |
---|
1879 | _digraph->first(e); |
---|
1880 | } |
---|
1881 | |
---|
1882 | void next(Edge& e) const { |
---|
1883 | _digraph->next(e); |
---|
1884 | } |
---|
1885 | |
---|
1886 | void firstOut(Arc& a, const Node& n) const { |
---|
1887 | _digraph->firstIn(a, n); |
---|
1888 | if( static_cast<const Edge&>(a) != INVALID ) { |
---|
1889 | a._forward = false; |
---|
1890 | } else { |
---|
1891 | _digraph->firstOut(a, n); |
---|
1892 | a._forward = true; |
---|
1893 | } |
---|
1894 | } |
---|
1895 | void nextOut(Arc &a) const { |
---|
1896 | if (!a._forward) { |
---|
1897 | Node n = _digraph->target(a); |
---|
1898 | _digraph->nextIn(a); |
---|
1899 | if (static_cast<const Edge&>(a) == INVALID ) { |
---|
1900 | _digraph->firstOut(a, n); |
---|
1901 | a._forward = true; |
---|
1902 | } |
---|
1903 | } |
---|
1904 | else { |
---|
1905 | _digraph->nextOut(a); |
---|
1906 | } |
---|
1907 | } |
---|
1908 | |
---|
1909 | void firstIn(Arc &a, const Node &n) const { |
---|
1910 | _digraph->firstOut(a, n); |
---|
1911 | if (static_cast<const Edge&>(a) != INVALID ) { |
---|
1912 | a._forward = false; |
---|
1913 | } else { |
---|
1914 | _digraph->firstIn(a, n); |
---|
1915 | a._forward = true; |
---|
1916 | } |
---|
1917 | } |
---|
1918 | void nextIn(Arc &a) const { |
---|
1919 | if (!a._forward) { |
---|
1920 | Node n = _digraph->source(a); |
---|
1921 | _digraph->nextOut(a); |
---|
1922 | if( static_cast<const Edge&>(a) == INVALID ) { |
---|
1923 | _digraph->firstIn(a, n); |
---|
1924 | a._forward = true; |
---|
1925 | } |
---|
1926 | } |
---|
1927 | else { |
---|
1928 | _digraph->nextIn(a); |
---|
1929 | } |
---|
1930 | } |
---|
1931 | |
---|
1932 | void firstInc(Edge &e, bool &d, const Node &n) const { |
---|
1933 | d = true; |
---|
1934 | _digraph->firstOut(e, n); |
---|
1935 | if (e != INVALID) return; |
---|
1936 | d = false; |
---|
1937 | _digraph->firstIn(e, n); |
---|
1938 | } |
---|
1939 | |
---|
1940 | void nextInc(Edge &e, bool &d) const { |
---|
1941 | if (d) { |
---|
1942 | Node s = _digraph->source(e); |
---|
1943 | _digraph->nextOut(e); |
---|
1944 | if (e != INVALID) return; |
---|
1945 | d = false; |
---|
1946 | _digraph->firstIn(e, s); |
---|
1947 | } else { |
---|
1948 | _digraph->nextIn(e); |
---|
1949 | } |
---|
1950 | } |
---|
1951 | |
---|
1952 | Node u(const Edge& e) const { |
---|
1953 | return _digraph->source(e); |
---|
1954 | } |
---|
1955 | |
---|
1956 | Node v(const Edge& e) const { |
---|
1957 | return _digraph->target(e); |
---|
1958 | } |
---|
1959 | |
---|
1960 | Node source(const Arc &a) const { |
---|
1961 | return a._forward ? _digraph->source(a) : _digraph->target(a); |
---|
1962 | } |
---|
1963 | |
---|
1964 | Node target(const Arc &a) const { |
---|
1965 | return a._forward ? _digraph->target(a) : _digraph->source(a); |
---|
1966 | } |
---|
1967 | |
---|
1968 | static Arc direct(const Edge &e, bool d) { |
---|
1969 | return Arc(e, d); |
---|
1970 | } |
---|
1971 | Arc direct(const Edge &e, const Node& n) const { |
---|
1972 | return Arc(e, _digraph->source(e) == n); |
---|
1973 | } |
---|
1974 | |
---|
1975 | static bool direction(const Arc &a) { return a._forward; } |
---|
1976 | |
---|
1977 | Node nodeFromId(int ix) const { return _digraph->nodeFromId(ix); } |
---|
1978 | Arc arcFromId(int ix) const { |
---|
1979 | return direct(_digraph->arcFromId(ix >> 1), bool(ix & 1)); |
---|
1980 | } |
---|
1981 | Edge edgeFromId(int ix) const { return _digraph->arcFromId(ix); } |
---|
1982 | |
---|
1983 | int id(const Node &n) const { return _digraph->id(n); } |
---|
1984 | int id(const Arc &a) const { |
---|
1985 | return (_digraph->id(a) << 1) | (a._forward ? 1 : 0); |
---|
1986 | } |
---|
1987 | int id(const Edge &e) const { return _digraph->id(e); } |
---|
1988 | |
---|
1989 | int maxNodeId() const { return _digraph->maxNodeId(); } |
---|
1990 | int maxArcId() const { return (_digraph->maxArcId() << 1) | 1; } |
---|
1991 | int maxEdgeId() const { return _digraph->maxArcId(); } |
---|
1992 | |
---|
1993 | Node addNode() { return _digraph->addNode(); } |
---|
1994 | Edge addEdge(const Node& u, const Node& v) { |
---|
1995 | return _digraph->addArc(u, v); |
---|
1996 | } |
---|
1997 | |
---|
1998 | void erase(const Node& i) { _digraph->erase(i); } |
---|
1999 | void erase(const Edge& i) { _digraph->erase(i); } |
---|
2000 | |
---|
2001 | void clear() { _digraph->clear(); } |
---|
2002 | |
---|
2003 | typedef NodeNumTagIndicator<Digraph> NodeNumTag; |
---|
2004 | int nodeNum() const { return _digraph->nodeNum(); } |
---|
2005 | |
---|
2006 | typedef ArcNumTagIndicator<Digraph> ArcNumTag; |
---|
2007 | int arcNum() const { return 2 * _digraph->arcNum(); } |
---|
2008 | |
---|
2009 | typedef ArcNumTag EdgeNumTag; |
---|
2010 | int edgeNum() const { return _digraph->arcNum(); } |
---|
2011 | |
---|
2012 | typedef FindArcTagIndicator<Digraph> FindArcTag; |
---|
2013 | Arc findArc(Node s, Node t, Arc p = INVALID) const { |
---|
2014 | if (p == INVALID) { |
---|
2015 | Edge arc = _digraph->findArc(s, t); |
---|
2016 | if (arc != INVALID) return direct(arc, true); |
---|
2017 | arc = _digraph->findArc(t, s); |
---|
2018 | if (arc != INVALID) return direct(arc, false); |
---|
2019 | } else if (direction(p)) { |
---|
2020 | Edge arc = _digraph->findArc(s, t, p); |
---|
2021 | if (arc != INVALID) return direct(arc, true); |
---|
2022 | arc = _digraph->findArc(t, s); |
---|
2023 | if (arc != INVALID) return direct(arc, false); |
---|
2024 | } else { |
---|
2025 | Edge arc = _digraph->findArc(t, s, p); |
---|
2026 | if (arc != INVALID) return direct(arc, false); |
---|
2027 | } |
---|
2028 | return INVALID; |
---|
2029 | } |
---|
2030 | |
---|
2031 | typedef FindArcTag FindEdgeTag; |
---|
2032 | Edge findEdge(Node s, Node t, Edge p = INVALID) const { |
---|
2033 | if (s != t) { |
---|
2034 | if (p == INVALID) { |
---|
2035 | Edge arc = _digraph->findArc(s, t); |
---|
2036 | if (arc != INVALID) return arc; |
---|
2037 | arc = _digraph->findArc(t, s); |
---|
2038 | if (arc != INVALID) return arc; |
---|
2039 | } else if (_digraph->source(p) == s) { |
---|
2040 | Edge arc = _digraph->findArc(s, t, p); |
---|
2041 | if (arc != INVALID) return arc; |
---|
2042 | arc = _digraph->findArc(t, s); |
---|
2043 | if (arc != INVALID) return arc; |
---|
2044 | } else { |
---|
2045 | Edge arc = _digraph->findArc(t, s, p); |
---|
2046 | if (arc != INVALID) return arc; |
---|
2047 | } |
---|
2048 | } else { |
---|
2049 | return _digraph->findArc(s, t, p); |
---|
2050 | } |
---|
2051 | return INVALID; |
---|
2052 | } |
---|
2053 | |
---|
2054 | private: |
---|
2055 | |
---|
2056 | template <typename V> |
---|
2057 | class ArcMapBase { |
---|
2058 | private: |
---|
2059 | |
---|
2060 | typedef typename DGR::template ArcMap<V> MapImpl; |
---|
2061 | |
---|
2062 | public: |
---|
2063 | |
---|
2064 | typedef typename MapTraits<MapImpl>::ReferenceMapTag ReferenceMapTag; |
---|
2065 | |
---|
2066 | typedef V Value; |
---|
2067 | typedef Arc Key; |
---|
2068 | typedef typename MapTraits<MapImpl>::ConstReturnValue ConstReturnValue; |
---|
2069 | typedef typename MapTraits<MapImpl>::ReturnValue ReturnValue; |
---|
2070 | typedef typename MapTraits<MapImpl>::ConstReturnValue ConstReference; |
---|
2071 | typedef typename MapTraits<MapImpl>::ReturnValue Reference; |
---|
2072 | |
---|
2073 | ArcMapBase(const UndirectorBase<DGR>& adaptor) : |
---|
2074 | _forward(*adaptor._digraph), _backward(*adaptor._digraph) {} |
---|
2075 | |
---|
2076 | ArcMapBase(const UndirectorBase<DGR>& adaptor, const V& value) |
---|
2077 | : _forward(*adaptor._digraph, value), |
---|
2078 | _backward(*adaptor._digraph, value) {} |
---|
2079 | |
---|
2080 | void set(const Arc& a, const V& value) { |
---|
2081 | if (direction(a)) { |
---|
2082 | _forward.set(a, value); |
---|
2083 | } else { |
---|
2084 | _backward.set(a, value); |
---|
2085 | } |
---|
2086 | } |
---|
2087 | |
---|
2088 | ConstReturnValue operator[](const Arc& a) const { |
---|
2089 | if (direction(a)) { |
---|
2090 | return _forward[a]; |
---|
2091 | } else { |
---|
2092 | return _backward[a]; |
---|
2093 | } |
---|
2094 | } |
---|
2095 | |
---|
2096 | ReturnValue operator[](const Arc& a) { |
---|
2097 | if (direction(a)) { |
---|
2098 | return _forward[a]; |
---|
2099 | } else { |
---|
2100 | return _backward[a]; |
---|
2101 | } |
---|
2102 | } |
---|
2103 | |
---|
2104 | protected: |
---|
2105 | |
---|
2106 | MapImpl _forward, _backward; |
---|
2107 | |
---|
2108 | }; |
---|
2109 | |
---|
2110 | public: |
---|
2111 | |
---|
2112 | template <typename V> |
---|
2113 | class NodeMap : public DGR::template NodeMap<V> { |
---|
2114 | public: |
---|
2115 | |
---|
2116 | typedef V Value; |
---|
2117 | typedef typename DGR::template NodeMap<Value> Parent; |
---|
2118 | |
---|
2119 | explicit NodeMap(const UndirectorBase<DGR>& adaptor) |
---|
2120 | : Parent(*adaptor._digraph) {} |
---|
2121 | |
---|
2122 | NodeMap(const UndirectorBase<DGR>& adaptor, const V& value) |
---|
2123 | : Parent(*adaptor._digraph, value) { } |
---|
2124 | |
---|
2125 | private: |
---|
2126 | NodeMap& operator=(const NodeMap& cmap) { |
---|
2127 | return operator=<NodeMap>(cmap); |
---|
2128 | } |
---|
2129 | |
---|
2130 | template <typename CMap> |
---|
2131 | NodeMap& operator=(const CMap& cmap) { |
---|
2132 | Parent::operator=(cmap); |
---|
2133 | return *this; |
---|
2134 | } |
---|
2135 | |
---|
2136 | }; |
---|
2137 | |
---|
2138 | template <typename V> |
---|
2139 | class ArcMap |
---|
2140 | : public SubMapExtender<UndirectorBase<DGR>, ArcMapBase<V> > |
---|
2141 | { |
---|
2142 | public: |
---|
2143 | typedef V Value; |
---|
2144 | typedef SubMapExtender<Adaptor, ArcMapBase<V> > Parent; |
---|
2145 | |
---|
2146 | explicit ArcMap(const UndirectorBase<DGR>& adaptor) |
---|
2147 | : Parent(adaptor) {} |
---|
2148 | |
---|
2149 | ArcMap(const UndirectorBase<DGR>& adaptor, const V& value) |
---|
2150 | : Parent(adaptor, value) {} |
---|
2151 | |
---|
2152 | private: |
---|
2153 | ArcMap& operator=(const ArcMap& cmap) { |
---|
2154 | return operator=<ArcMap>(cmap); |
---|
2155 | } |
---|
2156 | |
---|
2157 | template <typename CMap> |
---|
2158 | ArcMap& operator=(const CMap& cmap) { |
---|
2159 | Parent::operator=(cmap); |
---|
2160 | return *this; |
---|
2161 | } |
---|
2162 | }; |
---|
2163 | |
---|
2164 | template <typename V> |
---|
2165 | class EdgeMap : public Digraph::template ArcMap<V> { |
---|
2166 | public: |
---|
2167 | |
---|
2168 | typedef V Value; |
---|
2169 | typedef typename Digraph::template ArcMap<V> Parent; |
---|
2170 | |
---|
2171 | explicit EdgeMap(const UndirectorBase<DGR>& adaptor) |
---|
2172 | : Parent(*adaptor._digraph) {} |
---|
2173 | |
---|
2174 | EdgeMap(const UndirectorBase<DGR>& adaptor, const V& value) |
---|
2175 | : Parent(*adaptor._digraph, value) {} |
---|
2176 | |
---|
2177 | private: |
---|
2178 | EdgeMap& operator=(const EdgeMap& cmap) { |
---|
2179 | return operator=<EdgeMap>(cmap); |
---|
2180 | } |
---|
2181 | |
---|
2182 | template <typename CMap> |
---|
2183 | EdgeMap& operator=(const CMap& cmap) { |
---|
2184 | Parent::operator=(cmap); |
---|
2185 | return *this; |
---|
2186 | } |
---|
2187 | |
---|
2188 | }; |
---|
2189 | |
---|
2190 | typedef typename ItemSetTraits<DGR, Node>::ItemNotifier NodeNotifier; |
---|
2191 | NodeNotifier& notifier(Node) const { return _digraph->notifier(Node()); } |
---|
2192 | |
---|
2193 | typedef typename ItemSetTraits<DGR, Edge>::ItemNotifier EdgeNotifier; |
---|
2194 | EdgeNotifier& notifier(Edge) const { return _digraph->notifier(Edge()); } |
---|
2195 | |
---|
2196 | protected: |
---|
2197 | |
---|
2198 | UndirectorBase() : _digraph(0) {} |
---|
2199 | |
---|
2200 | DGR* _digraph; |
---|
2201 | |
---|
2202 | void initialize(DGR& digraph) { |
---|
2203 | _digraph = &digraph; |
---|
2204 | } |
---|
2205 | |
---|
2206 | }; |
---|
2207 | |
---|
2208 | /// \ingroup graph_adaptors |
---|
2209 | /// |
---|
2210 | /// \brief Adaptor class for viewing a digraph as an undirected graph. |
---|
2211 | /// |
---|
2212 | /// Undirector adaptor can be used for viewing a digraph as an undirected |
---|
2213 | /// graph. All arcs of the underlying digraph are showed in the |
---|
2214 | /// adaptor as an edge (and also as a pair of arcs, of course). |
---|
2215 | /// This adaptor conforms to the \ref concepts::Graph "Graph" concept. |
---|
2216 | /// |
---|
2217 | /// The adapted digraph can also be modified through this adaptor |
---|
2218 | /// by adding or removing nodes or edges, unless the \c GR template |
---|
2219 | /// parameter is set to be \c const. |
---|
2220 | /// |
---|
2221 | /// \tparam DGR The type of the adapted digraph. |
---|
2222 | /// It must conform to the \ref concepts::Digraph "Digraph" concept. |
---|
2223 | /// It can also be specified to be \c const. |
---|
2224 | /// |
---|
2225 | /// \note The \c Node type of this adaptor and the adapted digraph are |
---|
2226 | /// convertible to each other, moreover the \c Edge type of the adaptor |
---|
2227 | /// and the \c Arc type of the adapted digraph are also convertible to |
---|
2228 | /// each other. |
---|
2229 | /// (Thus the \c Arc type of the adaptor is convertible to the \c Arc type |
---|
2230 | /// of the adapted digraph.) |
---|
2231 | template<typename DGR> |
---|
2232 | #ifdef DOXYGEN |
---|
2233 | class Undirector { |
---|
2234 | #else |
---|
2235 | class Undirector : |
---|
2236 | public GraphAdaptorExtender<UndirectorBase<DGR> > { |
---|
2237 | #endif |
---|
2238 | public: |
---|
2239 | /// The type of the adapted digraph. |
---|
2240 | typedef DGR Digraph; |
---|
2241 | typedef GraphAdaptorExtender<UndirectorBase<DGR> > Parent; |
---|
2242 | protected: |
---|
2243 | Undirector() { } |
---|
2244 | public: |
---|
2245 | |
---|
2246 | /// \brief Constructor |
---|
2247 | /// |
---|
2248 | /// Creates an undirected graph from the given digraph. |
---|
2249 | Undirector(DGR& digraph) { |
---|
2250 | initialize(digraph); |
---|
2251 | } |
---|
2252 | |
---|
2253 | /// \brief Arc map combined from two original arc maps |
---|
2254 | /// |
---|
2255 | /// This map adaptor class adapts two arc maps of the underlying |
---|
2256 | /// digraph to get an arc map of the undirected graph. |
---|
2257 | /// Its value type is inherited from the first arc map type |
---|
2258 | /// (\c %ForwardMap). |
---|
2259 | template <typename ForwardMap, typename BackwardMap> |
---|
2260 | class CombinedArcMap { |
---|
2261 | public: |
---|
2262 | |
---|
2263 | /// The key type of the map |
---|
2264 | typedef typename Parent::Arc Key; |
---|
2265 | /// The value type of the map |
---|
2266 | typedef typename ForwardMap::Value Value; |
---|
2267 | |
---|
2268 | typedef typename MapTraits<ForwardMap>::ReferenceMapTag ReferenceMapTag; |
---|
2269 | |
---|
2270 | typedef typename MapTraits<ForwardMap>::ReturnValue ReturnValue; |
---|
2271 | typedef typename MapTraits<ForwardMap>::ConstReturnValue ConstReturnValue; |
---|
2272 | typedef typename MapTraits<ForwardMap>::ReturnValue Reference; |
---|
2273 | typedef typename MapTraits<ForwardMap>::ConstReturnValue ConstReference; |
---|
2274 | |
---|
2275 | /// Constructor |
---|
2276 | CombinedArcMap(ForwardMap& forward, BackwardMap& backward) |
---|
2277 | : _forward(&forward), _backward(&backward) {} |
---|
2278 | |
---|
2279 | /// Sets the value associated with the given key. |
---|
2280 | void set(const Key& e, const Value& a) { |
---|
2281 | if (Parent::direction(e)) { |
---|
2282 | _forward->set(e, a); |
---|
2283 | } else { |
---|
2284 | _backward->set(e, a); |
---|
2285 | } |
---|
2286 | } |
---|
2287 | |
---|
2288 | /// Returns the value associated with the given key. |
---|
2289 | ConstReturnValue operator[](const Key& e) const { |
---|
2290 | if (Parent::direction(e)) { |
---|
2291 | return (*_forward)[e]; |
---|
2292 | } else { |
---|
2293 | return (*_backward)[e]; |
---|
2294 | } |
---|
2295 | } |
---|
2296 | |
---|
2297 | /// Returns a reference to the value associated with the given key. |
---|
2298 | ReturnValue operator[](const Key& e) { |
---|
2299 | if (Parent::direction(e)) { |
---|
2300 | return (*_forward)[e]; |
---|
2301 | } else { |
---|
2302 | return (*_backward)[e]; |
---|
2303 | } |
---|
2304 | } |
---|
2305 | |
---|
2306 | protected: |
---|
2307 | |
---|
2308 | ForwardMap* _forward; |
---|
2309 | BackwardMap* _backward; |
---|
2310 | |
---|
2311 | }; |
---|
2312 | |
---|
2313 | /// \brief Returns a combined arc map |
---|
2314 | /// |
---|
2315 | /// This function just returns a combined arc map. |
---|
2316 | template <typename ForwardMap, typename BackwardMap> |
---|
2317 | static CombinedArcMap<ForwardMap, BackwardMap> |
---|
2318 | combinedArcMap(ForwardMap& forward, BackwardMap& backward) { |
---|
2319 | return CombinedArcMap<ForwardMap, BackwardMap>(forward, backward); |
---|
2320 | } |
---|
2321 | |
---|
2322 | template <typename ForwardMap, typename BackwardMap> |
---|
2323 | static CombinedArcMap<const ForwardMap, BackwardMap> |
---|
2324 | combinedArcMap(const ForwardMap& forward, BackwardMap& backward) { |
---|
2325 | return CombinedArcMap<const ForwardMap, |
---|
2326 | BackwardMap>(forward, backward); |
---|
2327 | } |
---|
2328 | |
---|
2329 | template <typename ForwardMap, typename BackwardMap> |
---|
2330 | static CombinedArcMap<ForwardMap, const BackwardMap> |
---|
2331 | combinedArcMap(ForwardMap& forward, const BackwardMap& backward) { |
---|
2332 | return CombinedArcMap<ForwardMap, |
---|
2333 | const BackwardMap>(forward, backward); |
---|
2334 | } |
---|
2335 | |
---|
2336 | template <typename ForwardMap, typename BackwardMap> |
---|
2337 | static CombinedArcMap<const ForwardMap, const BackwardMap> |
---|
2338 | combinedArcMap(const ForwardMap& forward, const BackwardMap& backward) { |
---|
2339 | return CombinedArcMap<const ForwardMap, |
---|
2340 | const BackwardMap>(forward, backward); |
---|
2341 | } |
---|
2342 | |
---|
2343 | }; |
---|
2344 | |
---|
2345 | /// \brief Returns a read-only Undirector adaptor |
---|
2346 | /// |
---|
2347 | /// This function just returns a read-only \ref Undirector adaptor. |
---|
2348 | /// \ingroup graph_adaptors |
---|
2349 | /// \relates Undirector |
---|
2350 | template<typename DGR> |
---|
2351 | Undirector<const DGR> undirector(const DGR& digraph) { |
---|
2352 | return Undirector<const DGR>(digraph); |
---|
2353 | } |
---|
2354 | |
---|
2355 | |
---|
2356 | template <typename GR, typename DM> |
---|
2357 | class OrienterBase { |
---|
2358 | public: |
---|
2359 | |
---|
2360 | typedef GR Graph; |
---|
2361 | typedef DM DirectionMap; |
---|
2362 | |
---|
2363 | typedef typename GR::Node Node; |
---|
2364 | typedef typename GR::Edge Arc; |
---|
2365 | |
---|
2366 | void reverseArc(const Arc& arc) { |
---|
2367 | _direction->set(arc, !(*_direction)[arc]); |
---|
2368 | } |
---|
2369 | |
---|
2370 | void first(Node& i) const { _graph->first(i); } |
---|
2371 | void first(Arc& i) const { _graph->first(i); } |
---|
2372 | void firstIn(Arc& i, const Node& n) const { |
---|
2373 | bool d = true; |
---|
2374 | _graph->firstInc(i, d, n); |
---|
2375 | while (i != INVALID && d == (*_direction)[i]) _graph->nextInc(i, d); |
---|
2376 | } |
---|
2377 | void firstOut(Arc& i, const Node& n ) const { |
---|
2378 | bool d = true; |
---|
2379 | _graph->firstInc(i, d, n); |
---|
2380 | while (i != INVALID && d != (*_direction)[i]) _graph->nextInc(i, d); |
---|
2381 | } |
---|
2382 | |
---|
2383 | void next(Node& i) const { _graph->next(i); } |
---|
2384 | void next(Arc& i) const { _graph->next(i); } |
---|
2385 | void nextIn(Arc& i) const { |
---|
2386 | bool d = !(*_direction)[i]; |
---|
2387 | _graph->nextInc(i, d); |
---|
2388 | while (i != INVALID && d == (*_direction)[i]) _graph->nextInc(i, d); |
---|
2389 | } |
---|
2390 | void nextOut(Arc& i) const { |
---|
2391 | bool d = (*_direction)[i]; |
---|
2392 | _graph->nextInc(i, d); |
---|
2393 | while (i != INVALID && d != (*_direction)[i]) _graph->nextInc(i, d); |
---|
2394 | } |
---|
2395 | |
---|
2396 | Node source(const Arc& e) const { |
---|
2397 | return (*_direction)[e] ? _graph->u(e) : _graph->v(e); |
---|
2398 | } |
---|
2399 | Node target(const Arc& e) const { |
---|
2400 | return (*_direction)[e] ? _graph->v(e) : _graph->u(e); |
---|
2401 | } |
---|
2402 | |
---|
2403 | typedef NodeNumTagIndicator<Graph> NodeNumTag; |
---|
2404 | int nodeNum() const { return _graph->nodeNum(); } |
---|
2405 | |
---|
2406 | typedef EdgeNumTagIndicator<Graph> ArcNumTag; |
---|
2407 | int arcNum() const { return _graph->edgeNum(); } |
---|
2408 | |
---|
2409 | typedef FindEdgeTagIndicator<Graph> FindArcTag; |
---|
2410 | Arc findArc(const Node& u, const Node& v, |
---|
2411 | const Arc& prev = INVALID) const { |
---|
2412 | Arc arc = _graph->findEdge(u, v, prev); |
---|
2413 | while (arc != INVALID && source(arc) != u) { |
---|
2414 | arc = _graph->findEdge(u, v, arc); |
---|
2415 | } |
---|
2416 | return arc; |
---|
2417 | } |
---|
2418 | |
---|
2419 | Node addNode() { |
---|
2420 | return Node(_graph->addNode()); |
---|
2421 | } |
---|
2422 | |
---|
2423 | Arc addArc(const Node& u, const Node& v) { |
---|
2424 | Arc arc = _graph->addEdge(u, v); |
---|
2425 | _direction->set(arc, _graph->u(arc) == u); |
---|
2426 | return arc; |
---|
2427 | } |
---|
2428 | |
---|
2429 | void erase(const Node& i) { _graph->erase(i); } |
---|
2430 | void erase(const Arc& i) { _graph->erase(i); } |
---|
2431 | |
---|
2432 | void clear() { _graph->clear(); } |
---|
2433 | |
---|
2434 | int id(const Node& v) const { return _graph->id(v); } |
---|
2435 | int id(const Arc& e) const { return _graph->id(e); } |
---|
2436 | |
---|
2437 | Node nodeFromId(int idx) const { return _graph->nodeFromId(idx); } |
---|
2438 | Arc arcFromId(int idx) const { return _graph->edgeFromId(idx); } |
---|
2439 | |
---|
2440 | int maxNodeId() const { return _graph->maxNodeId(); } |
---|
2441 | int maxArcId() const { return _graph->maxEdgeId(); } |
---|
2442 | |
---|
2443 | typedef typename ItemSetTraits<GR, Node>::ItemNotifier NodeNotifier; |
---|
2444 | NodeNotifier& notifier(Node) const { return _graph->notifier(Node()); } |
---|
2445 | |
---|
2446 | typedef typename ItemSetTraits<GR, Arc>::ItemNotifier ArcNotifier; |
---|
2447 | ArcNotifier& notifier(Arc) const { return _graph->notifier(Arc()); } |
---|
2448 | |
---|
2449 | template <typename V> |
---|
2450 | class NodeMap : public GR::template NodeMap<V> { |
---|
2451 | public: |
---|
2452 | |
---|
2453 | typedef typename GR::template NodeMap<V> Parent; |
---|
2454 | |
---|
2455 | explicit NodeMap(const OrienterBase<GR, DM>& adapter) |
---|
2456 | : Parent(*adapter._graph) {} |
---|
2457 | |
---|
2458 | NodeMap(const OrienterBase<GR, DM>& adapter, const V& value) |
---|
2459 | : Parent(*adapter._graph, value) {} |
---|
2460 | |
---|
2461 | private: |
---|
2462 | NodeMap& operator=(const NodeMap& cmap) { |
---|
2463 | return operator=<NodeMap>(cmap); |
---|
2464 | } |
---|
2465 | |
---|
2466 | template <typename CMap> |
---|
2467 | NodeMap& operator=(const CMap& cmap) { |
---|
2468 | Parent::operator=(cmap); |
---|
2469 | return *this; |
---|
2470 | } |
---|
2471 | |
---|
2472 | }; |
---|
2473 | |
---|
2474 | template <typename V> |
---|
2475 | class ArcMap : public GR::template EdgeMap<V> { |
---|
2476 | public: |
---|
2477 | |
---|
2478 | typedef typename Graph::template EdgeMap<V> Parent; |
---|
2479 | |
---|
2480 | explicit ArcMap(const OrienterBase<GR, DM>& adapter) |
---|
2481 | : Parent(*adapter._graph) { } |
---|
2482 | |
---|
2483 | ArcMap(const OrienterBase<GR, DM>& adapter, const V& value) |
---|
2484 | : Parent(*adapter._graph, value) { } |
---|
2485 | |
---|
2486 | private: |
---|
2487 | ArcMap& operator=(const ArcMap& cmap) { |
---|
2488 | return operator=<ArcMap>(cmap); |
---|
2489 | } |
---|
2490 | |
---|
2491 | template <typename CMap> |
---|
2492 | ArcMap& operator=(const CMap& cmap) { |
---|
2493 | Parent::operator=(cmap); |
---|
2494 | return *this; |
---|
2495 | } |
---|
2496 | }; |
---|
2497 | |
---|
2498 | |
---|
2499 | |
---|
2500 | protected: |
---|
2501 | Graph* _graph; |
---|
2502 | DM* _direction; |
---|
2503 | |
---|
2504 | void initialize(GR& graph, DM& direction) { |
---|
2505 | _graph = &graph; |
---|
2506 | _direction = &direction; |
---|
2507 | } |
---|
2508 | |
---|
2509 | }; |
---|
2510 | |
---|
2511 | /// \ingroup graph_adaptors |
---|
2512 | /// |
---|
2513 | /// \brief Adaptor class for orienting the edges of a graph to get a digraph |
---|
2514 | /// |
---|
2515 | /// Orienter adaptor can be used for orienting the edges of a graph to |
---|
2516 | /// get a digraph. A \c bool edge map of the underlying graph must be |
---|
2517 | /// specified, which define the direction of the arcs in the adaptor. |
---|
2518 | /// The arcs can be easily reversed by the \c reverseArc() member function |
---|
2519 | /// of the adaptor. |
---|
2520 | /// This class conforms to the \ref concepts::Digraph "Digraph" concept. |
---|
2521 | /// |
---|
2522 | /// The adapted graph can also be modified through this adaptor |
---|
2523 | /// by adding or removing nodes or arcs, unless the \c GR template |
---|
2524 | /// parameter is set to be \c const. |
---|
2525 | /// |
---|
2526 | /// \tparam GR The type of the adapted graph. |
---|
2527 | /// It must conform to the \ref concepts::Graph "Graph" concept. |
---|
2528 | /// It can also be specified to be \c const. |
---|
2529 | /// \tparam DM The type of the direction map. |
---|
2530 | /// It must be a \c bool (or convertible) edge map of the |
---|
2531 | /// adapted graph. The default type is |
---|
2532 | /// \ref concepts::Graph::EdgeMap "GR::EdgeMap<bool>". |
---|
2533 | /// |
---|
2534 | /// \note The \c Node type of this adaptor and the adapted graph are |
---|
2535 | /// convertible to each other, moreover the \c Arc type of the adaptor |
---|
2536 | /// and the \c Edge type of the adapted graph are also convertible to |
---|
2537 | /// each other. |
---|
2538 | #ifdef DOXYGEN |
---|
2539 | template<typename GR, |
---|
2540 | typename DM> |
---|
2541 | class Orienter { |
---|
2542 | #else |
---|
2543 | template<typename GR, |
---|
2544 | typename DM = typename GR::template EdgeMap<bool> > |
---|
2545 | class Orienter : |
---|
2546 | public DigraphAdaptorExtender<OrienterBase<GR, DM> > { |
---|
2547 | #endif |
---|
2548 | public: |
---|
2549 | |
---|
2550 | /// The type of the adapted graph. |
---|
2551 | typedef GR Graph; |
---|
2552 | /// The type of the direction edge map. |
---|
2553 | typedef DM DirectionMap; |
---|
2554 | |
---|
2555 | typedef DigraphAdaptorExtender<OrienterBase<GR, DM> > Parent; |
---|
2556 | typedef typename Parent::Arc Arc; |
---|
2557 | protected: |
---|
2558 | Orienter() { } |
---|
2559 | public: |
---|
2560 | |
---|
2561 | /// \brief Constructor |
---|
2562 | /// |
---|
2563 | /// Constructor of the adaptor. |
---|
2564 | Orienter(GR& graph, DM& direction) { |
---|
2565 | Parent::initialize(graph, direction); |
---|
2566 | } |
---|
2567 | |
---|
2568 | /// \brief Reverses the given arc |
---|
2569 | /// |
---|
2570 | /// This function reverses the given arc. |
---|
2571 | /// It is done by simply negate the assigned value of \c a |
---|
2572 | /// in the direction map. |
---|
2573 | void reverseArc(const Arc& a) { |
---|
2574 | Parent::reverseArc(a); |
---|
2575 | } |
---|
2576 | }; |
---|
2577 | |
---|
2578 | /// \brief Returns a read-only Orienter adaptor |
---|
2579 | /// |
---|
2580 | /// This function just returns a read-only \ref Orienter adaptor. |
---|
2581 | /// \ingroup graph_adaptors |
---|
2582 | /// \relates Orienter |
---|
2583 | template<typename GR, typename DM> |
---|
2584 | Orienter<const GR, DM> |
---|
2585 | orienter(const GR& graph, DM& direction) { |
---|
2586 | return Orienter<const GR, DM>(graph, direction); |
---|
2587 | } |
---|
2588 | |
---|
2589 | template<typename GR, typename DM> |
---|
2590 | Orienter<const GR, const DM> |
---|
2591 | orienter(const GR& graph, const DM& direction) { |
---|
2592 | return Orienter<const GR, const DM>(graph, direction); |
---|
2593 | } |
---|
2594 | |
---|
2595 | namespace _adaptor_bits { |
---|
2596 | |
---|
2597 | template <typename DGR, typename CM, typename FM, typename TL> |
---|
2598 | class ResForwardFilter { |
---|
2599 | public: |
---|
2600 | |
---|
2601 | typedef typename DGR::Arc Key; |
---|
2602 | typedef bool Value; |
---|
2603 | |
---|
2604 | private: |
---|
2605 | |
---|
2606 | const CM* _capacity; |
---|
2607 | const FM* _flow; |
---|
2608 | TL _tolerance; |
---|
2609 | |
---|
2610 | public: |
---|
2611 | |
---|
2612 | ResForwardFilter(const CM& capacity, const FM& flow, |
---|
2613 | const TL& tolerance = TL()) |
---|
2614 | : _capacity(&capacity), _flow(&flow), _tolerance(tolerance) { } |
---|
2615 | |
---|
2616 | bool operator[](const typename DGR::Arc& a) const { |
---|
2617 | return _tolerance.positive((*_capacity)[a] - (*_flow)[a]); |
---|
2618 | } |
---|
2619 | }; |
---|
2620 | |
---|
2621 | template<typename DGR,typename CM, typename FM, typename TL> |
---|
2622 | class ResBackwardFilter { |
---|
2623 | public: |
---|
2624 | |
---|
2625 | typedef typename DGR::Arc Key; |
---|
2626 | typedef bool Value; |
---|
2627 | |
---|
2628 | private: |
---|
2629 | |
---|
2630 | const CM* _capacity; |
---|
2631 | const FM* _flow; |
---|
2632 | TL _tolerance; |
---|
2633 | |
---|
2634 | public: |
---|
2635 | |
---|
2636 | ResBackwardFilter(const CM& capacity, const FM& flow, |
---|
2637 | const TL& tolerance = TL()) |
---|
2638 | : _capacity(&capacity), _flow(&flow), _tolerance(tolerance) { } |
---|
2639 | |
---|
2640 | bool operator[](const typename DGR::Arc& a) const { |
---|
2641 | return _tolerance.positive((*_flow)[a]); |
---|
2642 | } |
---|
2643 | }; |
---|
2644 | |
---|
2645 | } |
---|
2646 | |
---|
2647 | /// \ingroup graph_adaptors |
---|
2648 | /// |
---|
2649 | /// \brief Adaptor class for composing the residual digraph for directed |
---|
2650 | /// flow and circulation problems. |
---|
2651 | /// |
---|
2652 | /// ResidualDigraph can be used for composing the \e residual digraph |
---|
2653 | /// for directed flow and circulation problems. Let \f$ G=(V, A) \f$ |
---|
2654 | /// be a directed graph and let \f$ F \f$ be a number type. |
---|
2655 | /// Let \f$ flow, cap: A\to F \f$ be functions on the arcs. |
---|
2656 | /// This adaptor implements a digraph structure with node set \f$ V \f$ |
---|
2657 | /// and arc set \f$ A_{forward}\cup A_{backward} \f$, |
---|
2658 | /// where \f$ A_{forward}=\{uv : uv\in A, flow(uv)<cap(uv)\} \f$ and |
---|
2659 | /// \f$ A_{backward}=\{vu : uv\in A, flow(uv)>0\} \f$, i.e. the so |
---|
2660 | /// called residual digraph. |
---|
2661 | /// When the union \f$ A_{forward}\cup A_{backward} \f$ is taken, |
---|
2662 | /// multiplicities are counted, i.e. the adaptor has exactly |
---|
2663 | /// \f$ |A_{forward}| + |A_{backward}|\f$ arcs (it may have parallel |
---|
2664 | /// arcs). |
---|
2665 | /// This class conforms to the \ref concepts::Digraph "Digraph" concept. |
---|
2666 | /// |
---|
2667 | /// \tparam DGR The type of the adapted digraph. |
---|
2668 | /// It must conform to the \ref concepts::Digraph "Digraph" concept. |
---|
2669 | /// It is implicitly \c const. |
---|
2670 | /// \tparam CM The type of the capacity map. |
---|
2671 | /// It must be an arc map of some numerical type, which defines |
---|
2672 | /// the capacities in the flow problem. It is implicitly \c const. |
---|
2673 | /// The default type is |
---|
2674 | /// \ref concepts::Digraph::ArcMap "GR::ArcMap<int>". |
---|
2675 | /// \tparam FM The type of the flow map. |
---|
2676 | /// It must be an arc map of some numerical type, which defines |
---|
2677 | /// the flow values in the flow problem. The default type is \c CM. |
---|
2678 | /// \tparam TL The tolerance type for handling inexact computation. |
---|
2679 | /// The default tolerance type depends on the value type of the |
---|
2680 | /// capacity map. |
---|
2681 | /// |
---|
2682 | /// \note This adaptor is implemented using Undirector and FilterArcs |
---|
2683 | /// adaptors. |
---|
2684 | /// |
---|
2685 | /// \note The \c Node type of this adaptor and the adapted digraph are |
---|
2686 | /// convertible to each other, moreover the \c Arc type of the adaptor |
---|
2687 | /// is convertible to the \c Arc type of the adapted digraph. |
---|
2688 | #ifdef DOXYGEN |
---|
2689 | template<typename DGR, typename CM, typename FM, typename TL> |
---|
2690 | class ResidualDigraph |
---|
2691 | #else |
---|
2692 | template<typename DGR, |
---|
2693 | typename CM = typename DGR::template ArcMap<int>, |
---|
2694 | typename FM = CM, |
---|
2695 | typename TL = Tolerance<typename CM::Value> > |
---|
2696 | class ResidualDigraph |
---|
2697 | : public SubDigraph< |
---|
2698 | Undirector<const DGR>, |
---|
2699 | ConstMap<typename DGR::Node, Const<bool, true> >, |
---|
2700 | typename Undirector<const DGR>::template CombinedArcMap< |
---|
2701 | _adaptor_bits::ResForwardFilter<const DGR, CM, FM, TL>, |
---|
2702 | _adaptor_bits::ResBackwardFilter<const DGR, CM, FM, TL> > > |
---|
2703 | #endif |
---|
2704 | { |
---|
2705 | public: |
---|
2706 | |
---|
2707 | /// The type of the underlying digraph. |
---|
2708 | typedef DGR Digraph; |
---|
2709 | /// The type of the capacity map. |
---|
2710 | typedef CM CapacityMap; |
---|
2711 | /// The type of the flow map. |
---|
2712 | typedef FM FlowMap; |
---|
2713 | /// The tolerance type. |
---|
2714 | typedef TL Tolerance; |
---|
2715 | |
---|
2716 | typedef typename CapacityMap::Value Value; |
---|
2717 | typedef ResidualDigraph Adaptor; |
---|
2718 | |
---|
2719 | protected: |
---|
2720 | |
---|
2721 | typedef Undirector<const Digraph> Undirected; |
---|
2722 | |
---|
2723 | typedef ConstMap<typename DGR::Node, Const<bool, true> > NodeFilter; |
---|
2724 | |
---|
2725 | typedef _adaptor_bits::ResForwardFilter<const DGR, CM, |
---|
2726 | FM, TL> ForwardFilter; |
---|
2727 | |
---|
2728 | typedef _adaptor_bits::ResBackwardFilter<const DGR, CM, |
---|
2729 | FM, TL> BackwardFilter; |
---|
2730 | |
---|
2731 | typedef typename Undirected:: |
---|
2732 | template CombinedArcMap<ForwardFilter, BackwardFilter> ArcFilter; |
---|
2733 | |
---|
2734 | typedef SubDigraph<Undirected, NodeFilter, ArcFilter> Parent; |
---|
2735 | |
---|
2736 | const CapacityMap* _capacity; |
---|
2737 | FlowMap* _flow; |
---|
2738 | |
---|
2739 | Undirected _graph; |
---|
2740 | NodeFilter _node_filter; |
---|
2741 | ForwardFilter _forward_filter; |
---|
2742 | BackwardFilter _backward_filter; |
---|
2743 | ArcFilter _arc_filter; |
---|
2744 | |
---|
2745 | public: |
---|
2746 | |
---|
2747 | /// \brief Constructor |
---|
2748 | /// |
---|
2749 | /// Constructor of the residual digraph adaptor. The parameters are the |
---|
2750 | /// digraph, the capacity map, the flow map, and a tolerance object. |
---|
2751 | ResidualDigraph(const DGR& digraph, const CM& capacity, |
---|
2752 | FM& flow, const TL& tolerance = Tolerance()) |
---|
2753 | : Parent(), _capacity(&capacity), _flow(&flow), |
---|
2754 | _graph(digraph), _node_filter(), |
---|
2755 | _forward_filter(capacity, flow, tolerance), |
---|
2756 | _backward_filter(capacity, flow, tolerance), |
---|
2757 | _arc_filter(_forward_filter, _backward_filter) |
---|
2758 | { |
---|
2759 | Parent::initialize(_graph, _node_filter, _arc_filter); |
---|
2760 | } |
---|
2761 | |
---|
2762 | typedef typename Parent::Arc Arc; |
---|
2763 | |
---|
2764 | /// \brief Returns the residual capacity of the given arc. |
---|
2765 | /// |
---|
2766 | /// Returns the residual capacity of the given arc. |
---|
2767 | Value residualCapacity(const Arc& a) const { |
---|
2768 | if (Undirected::direction(a)) { |
---|
2769 | return (*_capacity)[a] - (*_flow)[a]; |
---|
2770 | } else { |
---|
2771 | return (*_flow)[a]; |
---|
2772 | } |
---|
2773 | } |
---|
2774 | |
---|
2775 | /// \brief Augments on the given arc in the residual digraph. |
---|
2776 | /// |
---|
2777 | /// Augments on the given arc in the residual digraph. It increases |
---|
2778 | /// or decreases the flow value on the original arc according to the |
---|
2779 | /// direction of the residual arc. |
---|
2780 | void augment(const Arc& a, const Value& v) const { |
---|
2781 | if (Undirected::direction(a)) { |
---|
2782 | _flow->set(a, (*_flow)[a] + v); |
---|
2783 | } else { |
---|
2784 | _flow->set(a, (*_flow)[a] - v); |
---|
2785 | } |
---|
2786 | } |
---|
2787 | |
---|
2788 | /// \brief Returns \c true if the given residual arc is a forward arc. |
---|
2789 | /// |
---|
2790 | /// Returns \c true if the given residual arc has the same orientation |
---|
2791 | /// as the original arc, i.e. it is a so called forward arc. |
---|
2792 | static bool forward(const Arc& a) { |
---|
2793 | return Undirected::direction(a); |
---|
2794 | } |
---|
2795 | |
---|
2796 | /// \brief Returns \c true if the given residual arc is a backward arc. |
---|
2797 | /// |
---|
2798 | /// Returns \c true if the given residual arc has the opposite orientation |
---|
2799 | /// than the original arc, i.e. it is a so called backward arc. |
---|
2800 | static bool backward(const Arc& a) { |
---|
2801 | return !Undirected::direction(a); |
---|
2802 | } |
---|
2803 | |
---|
2804 | /// \brief Returns the forward oriented residual arc. |
---|
2805 | /// |
---|
2806 | /// Returns the forward oriented residual arc related to the given |
---|
2807 | /// arc of the underlying digraph. |
---|
2808 | static Arc forward(const typename Digraph::Arc& a) { |
---|
2809 | return Undirected::direct(a, true); |
---|
2810 | } |
---|
2811 | |
---|
2812 | /// \brief Returns the backward oriented residual arc. |
---|
2813 | /// |
---|
2814 | /// Returns the backward oriented residual arc related to the given |
---|
2815 | /// arc of the underlying digraph. |
---|
2816 | static Arc backward(const typename Digraph::Arc& a) { |
---|
2817 | return Undirected::direct(a, false); |
---|
2818 | } |
---|
2819 | |
---|
2820 | /// \brief Residual capacity map. |
---|
2821 | /// |
---|
2822 | /// This map adaptor class can be used for obtaining the residual |
---|
2823 | /// capacities as an arc map of the residual digraph. |
---|
2824 | /// Its value type is inherited from the capacity map. |
---|
2825 | class ResidualCapacity { |
---|
2826 | protected: |
---|
2827 | const Adaptor* _adaptor; |
---|
2828 | public: |
---|
2829 | /// The key type of the map |
---|
2830 | typedef Arc Key; |
---|
2831 | /// The value type of the map |
---|
2832 | typedef typename CapacityMap::Value Value; |
---|
2833 | |
---|
2834 | /// Constructor |
---|
2835 | ResidualCapacity(const ResidualDigraph<DGR, CM, FM, TL>& adaptor) |
---|
2836 | : _adaptor(&adaptor) {} |
---|
2837 | |
---|
2838 | /// Returns the value associated with the given residual arc |
---|
2839 | Value operator[](const Arc& a) const { |
---|
2840 | return _adaptor->residualCapacity(a); |
---|
2841 | } |
---|
2842 | |
---|
2843 | }; |
---|
2844 | |
---|
2845 | /// \brief Returns a residual capacity map |
---|
2846 | /// |
---|
2847 | /// This function just returns a residual capacity map. |
---|
2848 | ResidualCapacity residualCapacity() const { |
---|
2849 | return ResidualCapacity(*this); |
---|
2850 | } |
---|
2851 | |
---|
2852 | }; |
---|
2853 | |
---|
2854 | /// \brief Returns a (read-only) Residual adaptor |
---|
2855 | /// |
---|
2856 | /// This function just returns a (read-only) \ref ResidualDigraph adaptor. |
---|
2857 | /// \ingroup graph_adaptors |
---|
2858 | /// \relates ResidualDigraph |
---|
2859 | template<typename DGR, typename CM, typename FM> |
---|
2860 | ResidualDigraph<DGR, CM, FM> |
---|
2861 | residualDigraph(const DGR& digraph, const CM& capacity_map, FM& flow_map) { |
---|
2862 | return ResidualDigraph<DGR, CM, FM> (digraph, capacity_map, flow_map); |
---|
2863 | } |
---|
2864 | |
---|
2865 | |
---|
2866 | template <typename DGR> |
---|
2867 | class SplitNodesBase { |
---|
2868 | public: |
---|
2869 | |
---|
2870 | typedef DGR Digraph; |
---|
2871 | typedef DigraphAdaptorBase<const DGR> Parent; |
---|
2872 | typedef SplitNodesBase Adaptor; |
---|
2873 | |
---|
2874 | typedef typename DGR::Node DigraphNode; |
---|
2875 | typedef typename DGR::Arc DigraphArc; |
---|
2876 | |
---|
2877 | class Node; |
---|
2878 | class Arc; |
---|
2879 | |
---|
2880 | private: |
---|
2881 | |
---|
2882 | template <typename T> class NodeMapBase; |
---|
2883 | template <typename T> class ArcMapBase; |
---|
2884 | |
---|
2885 | public: |
---|
2886 | |
---|
2887 | class Node : public DigraphNode { |
---|
2888 | friend class SplitNodesBase; |
---|
2889 | template <typename T> friend class NodeMapBase; |
---|
2890 | private: |
---|
2891 | |
---|
2892 | bool _in; |
---|
2893 | Node(DigraphNode node, bool in) |
---|
2894 | : DigraphNode(node), _in(in) {} |
---|
2895 | |
---|
2896 | public: |
---|
2897 | |
---|
2898 | Node() {} |
---|
2899 | Node(Invalid) : DigraphNode(INVALID), _in(true) {} |
---|
2900 | |
---|
2901 | bool operator==(const Node& node) const { |
---|
2902 | return DigraphNode::operator==(node) && _in == node._in; |
---|
2903 | } |
---|
2904 | |
---|
2905 | bool operator!=(const Node& node) const { |
---|
2906 | return !(*this == node); |
---|
2907 | } |
---|
2908 | |
---|
2909 | bool operator<(const Node& node) const { |
---|
2910 | return DigraphNode::operator<(node) || |
---|
2911 | (DigraphNode::operator==(node) && _in < node._in); |
---|
2912 | } |
---|
2913 | }; |
---|
2914 | |
---|
2915 | class Arc { |
---|
2916 | friend class SplitNodesBase; |
---|
2917 | template <typename T> friend class ArcMapBase; |
---|
2918 | private: |
---|
2919 | typedef BiVariant<DigraphArc, DigraphNode> ArcImpl; |
---|
2920 | |
---|
2921 | explicit Arc(const DigraphArc& arc) : _item(arc) {} |
---|
2922 | explicit Arc(const DigraphNode& node) : _item(node) {} |
---|
2923 | |
---|
2924 | ArcImpl _item; |
---|
2925 | |
---|
2926 | public: |
---|
2927 | Arc() {} |
---|
2928 | Arc(Invalid) : _item(DigraphArc(INVALID)) {} |
---|
2929 | |
---|
2930 | bool operator==(const Arc& arc) const { |
---|
2931 | if (_item.firstState()) { |
---|
2932 | if (arc._item.firstState()) { |
---|
2933 | return _item.first() == arc._item.first(); |
---|
2934 | } |
---|
2935 | } else { |
---|
2936 | if (arc._item.secondState()) { |
---|
2937 | return _item.second() == arc._item.second(); |
---|
2938 | } |
---|
2939 | } |
---|
2940 | return false; |
---|
2941 | } |
---|
2942 | |
---|
2943 | bool operator!=(const Arc& arc) const { |
---|
2944 | return !(*this == arc); |
---|
2945 | } |
---|
2946 | |
---|
2947 | bool operator<(const Arc& arc) const { |
---|
2948 | if (_item.firstState()) { |
---|
2949 | if (arc._item.firstState()) { |
---|
2950 | return _item.first() < arc._item.first(); |
---|
2951 | } |
---|
2952 | return false; |
---|
2953 | } else { |
---|
2954 | if (arc._item.secondState()) { |
---|
2955 | return _item.second() < arc._item.second(); |
---|
2956 | } |
---|
2957 | return true; |
---|
2958 | } |
---|
2959 | } |
---|
2960 | |
---|
2961 | operator DigraphArc() const { return _item.first(); } |
---|
2962 | operator DigraphNode() const { return _item.second(); } |
---|
2963 | |
---|
2964 | }; |
---|
2965 | |
---|
2966 | void first(Node& n) const { |
---|
2967 | _digraph->first(n); |
---|
2968 | n._in = true; |
---|
2969 | } |
---|
2970 | |
---|
2971 | void next(Node& n) const { |
---|
2972 | if (n._in) { |
---|
2973 | n._in = false; |
---|
2974 | } else { |
---|
2975 | n._in = true; |
---|
2976 | _digraph->next(n); |
---|
2977 | } |
---|
2978 | } |
---|
2979 | |
---|
2980 | void first(Arc& e) const { |
---|
2981 | e._item.setSecond(); |
---|
2982 | _digraph->first(e._item.second()); |
---|
2983 | if (e._item.second() == INVALID) { |
---|
2984 | e._item.setFirst(); |
---|
2985 | _digraph->first(e._item.first()); |
---|
2986 | } |
---|
2987 | } |
---|
2988 | |
---|
2989 | void next(Arc& e) const { |
---|
2990 | if (e._item.secondState()) { |
---|
2991 | _digraph->next(e._item.second()); |
---|
2992 | if (e._item.second() == INVALID) { |
---|
2993 | e._item.setFirst(); |
---|
2994 | _digraph->first(e._item.first()); |
---|
2995 | } |
---|
2996 | } else { |
---|
2997 | _digraph->next(e._item.first()); |
---|
2998 | } |
---|
2999 | } |
---|
3000 | |
---|
3001 | void firstOut(Arc& e, const Node& n) const { |
---|
3002 | if (n._in) { |
---|
3003 | e._item.setSecond(n); |
---|
3004 | } else { |
---|
3005 | e._item.setFirst(); |
---|
3006 | _digraph->firstOut(e._item.first(), n); |
---|
3007 | } |
---|
3008 | } |
---|
3009 | |
---|
3010 | void nextOut(Arc& e) const { |
---|
3011 | if (!e._item.firstState()) { |
---|
3012 | e._item.setFirst(INVALID); |
---|
3013 | } else { |
---|
3014 | _digraph->nextOut(e._item.first()); |
---|
3015 | } |
---|
3016 | } |
---|
3017 | |
---|
3018 | void firstIn(Arc& e, const Node& n) const { |
---|
3019 | if (!n._in) { |
---|
3020 | e._item.setSecond(n); |
---|
3021 | } else { |
---|
3022 | e._item.setFirst(); |
---|
3023 | _digraph->firstIn(e._item.first(), n); |
---|
3024 | } |
---|
3025 | } |
---|
3026 | |
---|
3027 | void nextIn(Arc& e) const { |
---|
3028 | if (!e._item.firstState()) { |
---|
3029 | e._item.setFirst(INVALID); |
---|
3030 | } else { |
---|
3031 | _digraph->nextIn(e._item.first()); |
---|
3032 | } |
---|
3033 | } |
---|
3034 | |
---|
3035 | Node source(const Arc& e) const { |
---|
3036 | if (e._item.firstState()) { |
---|
3037 | return Node(_digraph->source(e._item.first()), false); |
---|
3038 | } else { |
---|
3039 | return Node(e._item.second(), true); |
---|
3040 | } |
---|
3041 | } |
---|
3042 | |
---|
3043 | Node target(const Arc& e) const { |
---|
3044 | if (e._item.firstState()) { |
---|
3045 | return Node(_digraph->target(e._item.first()), true); |
---|
3046 | } else { |
---|
3047 | return Node(e._item.second(), false); |
---|
3048 | } |
---|
3049 | } |
---|
3050 | |
---|
3051 | int id(const Node& n) const { |
---|
3052 | return (_digraph->id(n) << 1) | (n._in ? 0 : 1); |
---|
3053 | } |
---|
3054 | Node nodeFromId(int ix) const { |
---|
3055 | return Node(_digraph->nodeFromId(ix >> 1), (ix & 1) == 0); |
---|
3056 | } |
---|
3057 | int maxNodeId() const { |
---|
3058 | return 2 * _digraph->maxNodeId() + 1; |
---|
3059 | } |
---|
3060 | |
---|
3061 | int id(const Arc& e) const { |
---|
3062 | if (e._item.firstState()) { |
---|
3063 | return _digraph->id(e._item.first()) << 1; |
---|
3064 | } else { |
---|
3065 | return (_digraph->id(e._item.second()) << 1) | 1; |
---|
3066 | } |
---|
3067 | } |
---|
3068 | Arc arcFromId(int ix) const { |
---|
3069 | if ((ix & 1) == 0) { |
---|
3070 | return Arc(_digraph->arcFromId(ix >> 1)); |
---|
3071 | } else { |
---|
3072 | return Arc(_digraph->nodeFromId(ix >> 1)); |
---|
3073 | } |
---|
3074 | } |
---|
3075 | int maxArcId() const { |
---|
3076 | return std::max(_digraph->maxNodeId() << 1, |
---|
3077 | (_digraph->maxArcId() << 1) | 1); |
---|
3078 | } |
---|
3079 | |
---|
3080 | static bool inNode(const Node& n) { |
---|
3081 | return n._in; |
---|
3082 | } |
---|
3083 | |
---|
3084 | static bool outNode(const Node& n) { |
---|
3085 | return !n._in; |
---|
3086 | } |
---|
3087 | |
---|
3088 | static bool origArc(const Arc& e) { |
---|
3089 | return e._item.firstState(); |
---|
3090 | } |
---|
3091 | |
---|
3092 | static bool bindArc(const Arc& e) { |
---|
3093 | return e._item.secondState(); |
---|
3094 | } |
---|
3095 | |
---|
3096 | static Node inNode(const DigraphNode& n) { |
---|
3097 | return Node(n, true); |
---|
3098 | } |
---|
3099 | |
---|
3100 | static Node outNode(const DigraphNode& n) { |
---|
3101 | return Node(n, false); |
---|
3102 | } |
---|
3103 | |
---|
3104 | static Arc arc(const DigraphNode& n) { |
---|
3105 | return Arc(n); |
---|
3106 | } |
---|
3107 | |
---|
3108 | static Arc arc(const DigraphArc& e) { |
---|
3109 | return Arc(e); |
---|
3110 | } |
---|
3111 | |
---|
3112 | typedef True NodeNumTag; |
---|
3113 | int nodeNum() const { |
---|
3114 | return 2 * countNodes(*_digraph); |
---|
3115 | } |
---|
3116 | |
---|
3117 | typedef True ArcNumTag; |
---|
3118 | int arcNum() const { |
---|
3119 | return countArcs(*_digraph) + countNodes(*_digraph); |
---|
3120 | } |
---|
3121 | |
---|
3122 | typedef True FindArcTag; |
---|
3123 | Arc findArc(const Node& u, const Node& v, |
---|
3124 | const Arc& prev = INVALID) const { |
---|
3125 | if (inNode(u) && outNode(v)) { |
---|
3126 | if (static_cast<const DigraphNode&>(u) == |
---|
3127 | static_cast<const DigraphNode&>(v) && prev == INVALID) { |
---|
3128 | return Arc(u); |
---|
3129 | } |
---|
3130 | } |
---|
3131 | else if (outNode(u) && inNode(v)) { |
---|
3132 | return Arc(::lemon::findArc(*_digraph, u, v, prev)); |
---|
3133 | } |
---|
3134 | return INVALID; |
---|
3135 | } |
---|
3136 | |
---|
3137 | private: |
---|
3138 | |
---|
3139 | template <typename V> |
---|
3140 | class NodeMapBase |
---|
3141 | : public MapTraits<typename Parent::template NodeMap<V> > { |
---|
3142 | typedef typename Parent::template NodeMap<V> NodeImpl; |
---|
3143 | public: |
---|
3144 | typedef Node Key; |
---|
3145 | typedef V Value; |
---|
3146 | typedef typename MapTraits<NodeImpl>::ReferenceMapTag ReferenceMapTag; |
---|
3147 | typedef typename MapTraits<NodeImpl>::ReturnValue ReturnValue; |
---|
3148 | typedef typename MapTraits<NodeImpl>::ConstReturnValue ConstReturnValue; |
---|
3149 | typedef typename MapTraits<NodeImpl>::ReturnValue Reference; |
---|
3150 | typedef typename MapTraits<NodeImpl>::ConstReturnValue ConstReference; |
---|
3151 | |
---|
3152 | NodeMapBase(const SplitNodesBase<DGR>& adaptor) |
---|
3153 | : _in_map(*adaptor._digraph), _out_map(*adaptor._digraph) {} |
---|
3154 | NodeMapBase(const SplitNodesBase<DGR>& adaptor, const V& value) |
---|
3155 | : _in_map(*adaptor._digraph, value), |
---|
3156 | _out_map(*adaptor._digraph, value) {} |
---|
3157 | |
---|
3158 | void set(const Node& key, const V& val) { |
---|
3159 | if (SplitNodesBase<DGR>::inNode(key)) { _in_map.set(key, val); } |
---|
3160 | else {_out_map.set(key, val); } |
---|
3161 | } |
---|
3162 | |
---|
3163 | ReturnValue operator[](const Node& key) { |
---|
3164 | if (SplitNodesBase<DGR>::inNode(key)) { return _in_map[key]; } |
---|
3165 | else { return _out_map[key]; } |
---|
3166 | } |
---|
3167 | |
---|
3168 | ConstReturnValue operator[](const Node& key) const { |
---|
3169 | if (Adaptor::inNode(key)) { return _in_map[key]; } |
---|
3170 | else { return _out_map[key]; } |
---|
3171 | } |
---|
3172 | |
---|
3173 | private: |
---|
3174 | NodeImpl _in_map, _out_map; |
---|
3175 | }; |
---|
3176 | |
---|
3177 | template <typename V> |
---|
3178 | class ArcMapBase |
---|
3179 | : public MapTraits<typename Parent::template ArcMap<V> > { |
---|
3180 | typedef typename Parent::template ArcMap<V> ArcImpl; |
---|
3181 | typedef typename Parent::template NodeMap<V> NodeImpl; |
---|
3182 | public: |
---|
3183 | typedef Arc Key; |
---|
3184 | typedef V Value; |
---|
3185 | typedef typename MapTraits<ArcImpl>::ReferenceMapTag ReferenceMapTag; |
---|
3186 | typedef typename MapTraits<ArcImpl>::ReturnValue ReturnValue; |
---|
3187 | typedef typename MapTraits<ArcImpl>::ConstReturnValue ConstReturnValue; |
---|
3188 | typedef typename MapTraits<ArcImpl>::ReturnValue Reference; |
---|
3189 | typedef typename MapTraits<ArcImpl>::ConstReturnValue ConstReference; |
---|
3190 | |
---|
3191 | ArcMapBase(const SplitNodesBase<DGR>& adaptor) |
---|
3192 | : _arc_map(*adaptor._digraph), _node_map(*adaptor._digraph) {} |
---|
3193 | ArcMapBase(const SplitNodesBase<DGR>& adaptor, const V& value) |
---|
3194 | : _arc_map(*adaptor._digraph, value), |
---|
3195 | _node_map(*adaptor._digraph, value) {} |
---|
3196 | |
---|
3197 | void set(const Arc& key, const V& val) { |
---|
3198 | if (SplitNodesBase<DGR>::origArc(key)) { |
---|
3199 | _arc_map.set(static_cast<const DigraphArc&>(key), val); |
---|
3200 | } else { |
---|
3201 | _node_map.set(static_cast<const DigraphNode&>(key), val); |
---|
3202 | } |
---|
3203 | } |
---|
3204 | |
---|
3205 | ReturnValue operator[](const Arc& key) { |
---|
3206 | if (SplitNodesBase<DGR>::origArc(key)) { |
---|
3207 | return _arc_map[static_cast<const DigraphArc&>(key)]; |
---|
3208 | } else { |
---|
3209 | return _node_map[static_cast<const DigraphNode&>(key)]; |
---|
3210 | } |
---|
3211 | } |
---|
3212 | |
---|
3213 | ConstReturnValue operator[](const Arc& key) const { |
---|
3214 | if (SplitNodesBase<DGR>::origArc(key)) { |
---|
3215 | return _arc_map[static_cast<const DigraphArc&>(key)]; |
---|
3216 | } else { |
---|
3217 | return _node_map[static_cast<const DigraphNode&>(key)]; |
---|
3218 | } |
---|
3219 | } |
---|
3220 | |
---|
3221 | private: |
---|
3222 | ArcImpl _arc_map; |
---|
3223 | NodeImpl _node_map; |
---|
3224 | }; |
---|
3225 | |
---|
3226 | public: |
---|
3227 | |
---|
3228 | template <typename V> |
---|
3229 | class NodeMap |
---|
3230 | : public SubMapExtender<SplitNodesBase<DGR>, NodeMapBase<V> > |
---|
3231 | { |
---|
3232 | public: |
---|
3233 | typedef V Value; |
---|
3234 | typedef SubMapExtender<SplitNodesBase<DGR>, NodeMapBase<Value> > Parent; |
---|
3235 | |
---|
3236 | NodeMap(const SplitNodesBase<DGR>& adaptor) |
---|
3237 | : Parent(adaptor) {} |
---|
3238 | |
---|
3239 | NodeMap(const SplitNodesBase<DGR>& adaptor, const V& value) |
---|
3240 | : Parent(adaptor, value) {} |
---|
3241 | |
---|
3242 | private: |
---|
3243 | NodeMap& operator=(const NodeMap& cmap) { |
---|
3244 | return operator=<NodeMap>(cmap); |
---|
3245 | } |
---|
3246 | |
---|
3247 | template <typename CMap> |
---|
3248 | NodeMap& operator=(const CMap& cmap) { |
---|
3249 | Parent::operator=(cmap); |
---|
3250 | return *this; |
---|
3251 | } |
---|
3252 | }; |
---|
3253 | |
---|
3254 | template <typename V> |
---|
3255 | class ArcMap |
---|
3256 | : public SubMapExtender<SplitNodesBase<DGR>, ArcMapBase<V> > |
---|
3257 | { |
---|
3258 | public: |
---|
3259 | typedef V Value; |
---|
3260 | typedef SubMapExtender<SplitNodesBase<DGR>, ArcMapBase<Value> > Parent; |
---|
3261 | |
---|
3262 | ArcMap(const SplitNodesBase<DGR>& adaptor) |
---|
3263 | : Parent(adaptor) {} |
---|
3264 | |
---|
3265 | ArcMap(const SplitNodesBase<DGR>& adaptor, const V& value) |
---|
3266 | : Parent(adaptor, value) {} |
---|
3267 | |
---|
3268 | private: |
---|
3269 | ArcMap& operator=(const ArcMap& cmap) { |
---|
3270 | return operator=<ArcMap>(cmap); |
---|
3271 | } |
---|
3272 | |
---|
3273 | template <typename CMap> |
---|
3274 | ArcMap& operator=(const CMap& cmap) { |
---|
3275 | Parent::operator=(cmap); |
---|
3276 | return *this; |
---|
3277 | } |
---|
3278 | }; |
---|
3279 | |
---|
3280 | protected: |
---|
3281 | |
---|
3282 | SplitNodesBase() : _digraph(0) {} |
---|
3283 | |
---|
3284 | DGR* _digraph; |
---|
3285 | |
---|
3286 | void initialize(Digraph& digraph) { |
---|
3287 | _digraph = &digraph; |
---|
3288 | } |
---|
3289 | |
---|
3290 | }; |
---|
3291 | |
---|
3292 | /// \ingroup graph_adaptors |
---|
3293 | /// |
---|
3294 | /// \brief Adaptor class for splitting the nodes of a digraph. |
---|
3295 | /// |
---|
3296 | /// SplitNodes adaptor can be used for splitting each node into an |
---|
3297 | /// \e in-node and an \e out-node in a digraph. Formaly, the adaptor |
---|
3298 | /// replaces each node \f$ u \f$ in the digraph with two nodes, |
---|
3299 | /// namely node \f$ u_{in} \f$ and node \f$ u_{out} \f$. |
---|
3300 | /// If there is a \f$ (v, u) \f$ arc in the original digraph, then the |
---|
3301 | /// new target of the arc will be \f$ u_{in} \f$ and similarly the |
---|
3302 | /// source of each original \f$ (u, v) \f$ arc will be \f$ u_{out} \f$. |
---|
3303 | /// The adaptor adds an additional \e bind \e arc from \f$ u_{in} \f$ |
---|
3304 | /// to \f$ u_{out} \f$ for each node \f$ u \f$ of the original digraph. |
---|
3305 | /// |
---|
3306 | /// The aim of this class is running an algorithm with respect to node |
---|
3307 | /// costs or capacities if the algorithm considers only arc costs or |
---|
3308 | /// capacities directly. |
---|
3309 | /// In this case you can use \c SplitNodes adaptor, and set the node |
---|
3310 | /// costs/capacities of the original digraph to the \e bind \e arcs |
---|
3311 | /// in the adaptor. |
---|
3312 | /// |
---|
3313 | /// \tparam DGR The type of the adapted digraph. |
---|
3314 | /// It must conform to the \ref concepts::Digraph "Digraph" concept. |
---|
3315 | /// It is implicitly \c const. |
---|
3316 | /// |
---|
3317 | /// \note The \c Node type of this adaptor is converible to the \c Node |
---|
3318 | /// type of the adapted digraph. |
---|
3319 | template <typename DGR> |
---|
3320 | #ifdef DOXYGEN |
---|
3321 | class SplitNodes { |
---|
3322 | #else |
---|
3323 | class SplitNodes |
---|
3324 | : public DigraphAdaptorExtender<SplitNodesBase<const DGR> > { |
---|
3325 | #endif |
---|
3326 | public: |
---|
3327 | typedef DGR Digraph; |
---|
3328 | typedef DigraphAdaptorExtender<SplitNodesBase<const DGR> > Parent; |
---|
3329 | |
---|
3330 | typedef typename DGR::Node DigraphNode; |
---|
3331 | typedef typename DGR::Arc DigraphArc; |
---|
3332 | |
---|
3333 | typedef typename Parent::Node Node; |
---|
3334 | typedef typename Parent::Arc Arc; |
---|
3335 | |
---|
3336 | /// \brief Constructor |
---|
3337 | /// |
---|
3338 | /// Constructor of the adaptor. |
---|
3339 | SplitNodes(const DGR& g) { |
---|
3340 | Parent::initialize(g); |
---|
3341 | } |
---|
3342 | |
---|
3343 | /// \brief Returns \c true if the given node is an in-node. |
---|
3344 | /// |
---|
3345 | /// Returns \c true if the given node is an in-node. |
---|
3346 | static bool inNode(const Node& n) { |
---|
3347 | return Parent::inNode(n); |
---|
3348 | } |
---|
3349 | |
---|
3350 | /// \brief Returns \c true if the given node is an out-node. |
---|
3351 | /// |
---|
3352 | /// Returns \c true if the given node is an out-node. |
---|
3353 | static bool outNode(const Node& n) { |
---|
3354 | return Parent::outNode(n); |
---|
3355 | } |
---|
3356 | |
---|
3357 | /// \brief Returns \c true if the given arc is an original arc. |
---|
3358 | /// |
---|
3359 | /// Returns \c true if the given arc is one of the arcs in the |
---|
3360 | /// original digraph. |
---|
3361 | static bool origArc(const Arc& a) { |
---|
3362 | return Parent::origArc(a); |
---|
3363 | } |
---|
3364 | |
---|
3365 | /// \brief Returns \c true if the given arc is a bind arc. |
---|
3366 | /// |
---|
3367 | /// Returns \c true if the given arc is a bind arc, i.e. it connects |
---|
3368 | /// an in-node and an out-node. |
---|
3369 | static bool bindArc(const Arc& a) { |
---|
3370 | return Parent::bindArc(a); |
---|
3371 | } |
---|
3372 | |
---|
3373 | /// \brief Returns the in-node created from the given original node. |
---|
3374 | /// |
---|
3375 | /// Returns the in-node created from the given original node. |
---|
3376 | static Node inNode(const DigraphNode& n) { |
---|
3377 | return Parent::inNode(n); |
---|
3378 | } |
---|
3379 | |
---|
3380 | /// \brief Returns the out-node created from the given original node. |
---|
3381 | /// |
---|
3382 | /// Returns the out-node created from the given original node. |
---|
3383 | static Node outNode(const DigraphNode& n) { |
---|
3384 | return Parent::outNode(n); |
---|
3385 | } |
---|
3386 | |
---|
3387 | /// \brief Returns the bind arc that corresponds to the given |
---|
3388 | /// original node. |
---|
3389 | /// |
---|
3390 | /// Returns the bind arc in the adaptor that corresponds to the given |
---|
3391 | /// original node, i.e. the arc connecting the in-node and out-node |
---|
3392 | /// of \c n. |
---|
3393 | static Arc arc(const DigraphNode& n) { |
---|
3394 | return Parent::arc(n); |
---|
3395 | } |
---|
3396 | |
---|
3397 | /// \brief Returns the arc that corresponds to the given original arc. |
---|
3398 | /// |
---|
3399 | /// Returns the arc in the adaptor that corresponds to the given |
---|
3400 | /// original arc. |
---|
3401 | static Arc arc(const DigraphArc& a) { |
---|
3402 | return Parent::arc(a); |
---|
3403 | } |
---|
3404 | |
---|
3405 | /// \brief Node map combined from two original node maps |
---|
3406 | /// |
---|
3407 | /// This map adaptor class adapts two node maps of the original digraph |
---|
3408 | /// to get a node map of the split digraph. |
---|
3409 | /// Its value type is inherited from the first node map type |
---|
3410 | /// (\c InNodeMap). |
---|
3411 | template <typename InNodeMap, typename OutNodeMap> |
---|
3412 | class CombinedNodeMap { |
---|
3413 | public: |
---|
3414 | |
---|
3415 | /// The key type of the map |
---|
3416 | typedef Node Key; |
---|
3417 | /// The value type of the map |
---|
3418 | typedef typename InNodeMap::Value Value; |
---|
3419 | |
---|
3420 | typedef typename MapTraits<InNodeMap>::ReferenceMapTag ReferenceMapTag; |
---|
3421 | typedef typename MapTraits<InNodeMap>::ReturnValue ReturnValue; |
---|
3422 | typedef typename MapTraits<InNodeMap>::ConstReturnValue ConstReturnValue; |
---|
3423 | typedef typename MapTraits<InNodeMap>::ReturnValue Reference; |
---|
3424 | typedef typename MapTraits<InNodeMap>::ConstReturnValue ConstReference; |
---|
3425 | |
---|
3426 | /// Constructor |
---|
3427 | CombinedNodeMap(InNodeMap& in_map, OutNodeMap& out_map) |
---|
3428 | : _in_map(in_map), _out_map(out_map) {} |
---|
3429 | |
---|
3430 | /// Returns the value associated with the given key. |
---|
3431 | Value operator[](const Key& key) const { |
---|
3432 | if (SplitNodesBase<const DGR>::inNode(key)) { |
---|
3433 | return _in_map[key]; |
---|
3434 | } else { |
---|
3435 | return _out_map[key]; |
---|
3436 | } |
---|
3437 | } |
---|
3438 | |
---|
3439 | /// Returns a reference to the value associated with the given key. |
---|
3440 | Value& operator[](const Key& key) { |
---|
3441 | if (SplitNodesBase<const DGR>::inNode(key)) { |
---|
3442 | return _in_map[key]; |
---|
3443 | } else { |
---|
3444 | return _out_map[key]; |
---|
3445 | } |
---|
3446 | } |
---|
3447 | |
---|
3448 | /// Sets the value associated with the given key. |
---|
3449 | void set(const Key& key, const Value& value) { |
---|
3450 | if (SplitNodesBase<const DGR>::inNode(key)) { |
---|
3451 | _in_map.set(key, value); |
---|
3452 | } else { |
---|
3453 | _out_map.set(key, value); |
---|
3454 | } |
---|
3455 | } |
---|
3456 | |
---|
3457 | private: |
---|
3458 | |
---|
3459 | InNodeMap& _in_map; |
---|
3460 | OutNodeMap& _out_map; |
---|
3461 | |
---|
3462 | }; |
---|
3463 | |
---|
3464 | |
---|
3465 | /// \brief Returns a combined node map |
---|
3466 | /// |
---|
3467 | /// This function just returns a combined node map. |
---|
3468 | template <typename InNodeMap, typename OutNodeMap> |
---|
3469 | static CombinedNodeMap<InNodeMap, OutNodeMap> |
---|
3470 | combinedNodeMap(InNodeMap& in_map, OutNodeMap& out_map) { |
---|
3471 | return CombinedNodeMap<InNodeMap, OutNodeMap>(in_map, out_map); |
---|
3472 | } |
---|
3473 | |
---|
3474 | template <typename InNodeMap, typename OutNodeMap> |
---|
3475 | static CombinedNodeMap<const InNodeMap, OutNodeMap> |
---|
3476 | combinedNodeMap(const InNodeMap& in_map, OutNodeMap& out_map) { |
---|
3477 | return CombinedNodeMap<const InNodeMap, OutNodeMap>(in_map, out_map); |
---|
3478 | } |
---|
3479 | |
---|
3480 | template <typename InNodeMap, typename OutNodeMap> |
---|
3481 | static CombinedNodeMap<InNodeMap, const OutNodeMap> |
---|
3482 | combinedNodeMap(InNodeMap& in_map, const OutNodeMap& out_map) { |
---|
3483 | return CombinedNodeMap<InNodeMap, const OutNodeMap>(in_map, out_map); |
---|
3484 | } |
---|
3485 | |
---|
3486 | template <typename InNodeMap, typename OutNodeMap> |
---|
3487 | static CombinedNodeMap<const InNodeMap, const OutNodeMap> |
---|
3488 | combinedNodeMap(const InNodeMap& in_map, const OutNodeMap& out_map) { |
---|
3489 | return CombinedNodeMap<const InNodeMap, |
---|
3490 | const OutNodeMap>(in_map, out_map); |
---|
3491 | } |
---|
3492 | |
---|
3493 | /// \brief Arc map combined from an arc map and a node map of the |
---|
3494 | /// original digraph. |
---|
3495 | /// |
---|
3496 | /// This map adaptor class adapts an arc map and a node map of the |
---|
3497 | /// original digraph to get an arc map of the split digraph. |
---|
3498 | /// Its value type is inherited from the original arc map type |
---|
3499 | /// (\c ArcMap). |
---|
3500 | template <typename ArcMap, typename NodeMap> |
---|
3501 | class CombinedArcMap { |
---|
3502 | public: |
---|
3503 | |
---|
3504 | /// The key type of the map |
---|
3505 | typedef Arc Key; |
---|
3506 | /// The value type of the map |
---|
3507 | typedef typename ArcMap::Value Value; |
---|
3508 | |
---|
3509 | typedef typename MapTraits<ArcMap>::ReferenceMapTag ReferenceMapTag; |
---|
3510 | typedef typename MapTraits<ArcMap>::ReturnValue ReturnValue; |
---|
3511 | typedef typename MapTraits<ArcMap>::ConstReturnValue ConstReturnValue; |
---|
3512 | typedef typename MapTraits<ArcMap>::ReturnValue Reference; |
---|
3513 | typedef typename MapTraits<ArcMap>::ConstReturnValue ConstReference; |
---|
3514 | |
---|
3515 | /// Constructor |
---|
3516 | CombinedArcMap(ArcMap& arc_map, NodeMap& node_map) |
---|
3517 | : _arc_map(arc_map), _node_map(node_map) {} |
---|
3518 | |
---|
3519 | /// Returns the value associated with the given key. |
---|
3520 | Value operator[](const Key& arc) const { |
---|
3521 | if (SplitNodesBase<const DGR>::origArc(arc)) { |
---|
3522 | return _arc_map[arc]; |
---|
3523 | } else { |
---|
3524 | return _node_map[arc]; |
---|
3525 | } |
---|
3526 | } |
---|
3527 | |
---|
3528 | /// Returns a reference to the value associated with the given key. |
---|
3529 | Value& operator[](const Key& arc) { |
---|
3530 | if (SplitNodesBase<const DGR>::origArc(arc)) { |
---|
3531 | return _arc_map[arc]; |
---|
3532 | } else { |
---|
3533 | return _node_map[arc]; |
---|
3534 | } |
---|
3535 | } |
---|
3536 | |
---|
3537 | /// Sets the value associated with the given key. |
---|
3538 | void set(const Arc& arc, const Value& val) { |
---|
3539 | if (SplitNodesBase<const DGR>::origArc(arc)) { |
---|
3540 | _arc_map.set(arc, val); |
---|
3541 | } else { |
---|
3542 | _node_map.set(arc, val); |
---|
3543 | } |
---|
3544 | } |
---|
3545 | |
---|
3546 | private: |
---|
3547 | ArcMap& _arc_map; |
---|
3548 | NodeMap& _node_map; |
---|
3549 | }; |
---|
3550 | |
---|
3551 | /// \brief Returns a combined arc map |
---|
3552 | /// |
---|
3553 | /// This function just returns a combined arc map. |
---|
3554 | template <typename ArcMap, typename NodeMap> |
---|
3555 | static CombinedArcMap<ArcMap, NodeMap> |
---|
3556 | combinedArcMap(ArcMap& arc_map, NodeMap& node_map) { |
---|
3557 | return CombinedArcMap<ArcMap, NodeMap>(arc_map, node_map); |
---|
3558 | } |
---|
3559 | |
---|
3560 | template <typename ArcMap, typename NodeMap> |
---|
3561 | static CombinedArcMap<const ArcMap, NodeMap> |
---|
3562 | combinedArcMap(const ArcMap& arc_map, NodeMap& node_map) { |
---|
3563 | return CombinedArcMap<const ArcMap, NodeMap>(arc_map, node_map); |
---|
3564 | } |
---|
3565 | |
---|
3566 | template <typename ArcMap, typename NodeMap> |
---|
3567 | static CombinedArcMap<ArcMap, const NodeMap> |
---|
3568 | combinedArcMap(ArcMap& arc_map, const NodeMap& node_map) { |
---|
3569 | return CombinedArcMap<ArcMap, const NodeMap>(arc_map, node_map); |
---|
3570 | } |
---|
3571 | |
---|
3572 | template <typename ArcMap, typename NodeMap> |
---|
3573 | static CombinedArcMap<const ArcMap, const NodeMap> |
---|
3574 | combinedArcMap(const ArcMap& arc_map, const NodeMap& node_map) { |
---|
3575 | return CombinedArcMap<const ArcMap, const NodeMap>(arc_map, node_map); |
---|
3576 | } |
---|
3577 | |
---|
3578 | }; |
---|
3579 | |
---|
3580 | /// \brief Returns a (read-only) SplitNodes adaptor |
---|
3581 | /// |
---|
3582 | /// This function just returns a (read-only) \ref SplitNodes adaptor. |
---|
3583 | /// \ingroup graph_adaptors |
---|
3584 | /// \relates SplitNodes |
---|
3585 | template<typename DGR> |
---|
3586 | SplitNodes<DGR> |
---|
3587 | splitNodes(const DGR& digraph) { |
---|
3588 | return SplitNodes<DGR>(digraph); |
---|
3589 | } |
---|
3590 | |
---|
3591 | #undef LEMON_SCOPE_FIX |
---|
3592 | |
---|
3593 | } //namespace lemon |
---|
3594 | |
---|
3595 | #endif //LEMON_ADAPTORS_H |
---|