[906] | 1 | /* -*- C++ -*- |
---|
| 2 | * |
---|
[1956] | 3 | * This file is a part of LEMON, a generic C++ optimization library |
---|
| 4 | * |
---|
| 5 | * Copyright (C) 2003-2006 |
---|
| 6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
[1359] | 7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
---|
[906] | 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 | |
---|
[1401] | 19 | #ifndef LEMON_GRAPH_ADAPTOR_H |
---|
| 20 | #define LEMON_GRAPH_ADAPTOR_H |
---|
[556] | 21 | |
---|
[2037] | 22 | ///\ingroup graph_adaptors |
---|
| 23 | ///\file |
---|
| 24 | ///\brief Several graph adaptors. |
---|
[556] | 25 | /// |
---|
[2037] | 26 | ///This file contains several useful graph adaptor functions. |
---|
[556] | 27 | /// |
---|
[2037] | 28 | ///\author Marton Makai and Balazs Dezso |
---|
[556] | 29 | |
---|
[1993] | 30 | #include <lemon/bits/invalid.h> |
---|
[921] | 31 | #include <lemon/maps.h> |
---|
[1979] | 32 | |
---|
[1999] | 33 | #include <lemon/bits/base_extender.h> |
---|
[1979] | 34 | #include <lemon/bits/graph_adaptor_extender.h> |
---|
[1791] | 35 | #include <lemon/bits/graph_extender.h> |
---|
[1979] | 36 | |
---|
[2034] | 37 | #include <lemon/tolerance.h> |
---|
| 38 | |
---|
[774] | 39 | #include <iostream> |
---|
[556] | 40 | |
---|
[921] | 41 | namespace lemon { |
---|
[556] | 42 | |
---|
[1951] | 43 | ///\brief Base type for the Graph Adaptors |
---|
| 44 | ///\ingroup graph_adaptors |
---|
| 45 | /// |
---|
| 46 | ///Base type for the Graph Adaptors |
---|
| 47 | /// |
---|
| 48 | ///This is the base type for most of LEMON graph adaptors. |
---|
| 49 | ///This class implements a trivial graph adaptor i.e. it only wraps the |
---|
| 50 | ///functions and types of the graph. The purpose of this class is to |
---|
| 51 | ///make easier implementing graph adaptors. E.g. if an adaptor is |
---|
| 52 | ///considered which differs from the wrapped graph only in some of its |
---|
| 53 | ///functions or types, then it can be derived from GraphAdaptor, |
---|
| 54 | ///and only the |
---|
| 55 | ///differences should be implemented. |
---|
| 56 | /// |
---|
| 57 | ///author Marton Makai |
---|
[970] | 58 | template<typename _Graph> |
---|
[1401] | 59 | class GraphAdaptorBase { |
---|
[970] | 60 | public: |
---|
| 61 | typedef _Graph Graph; |
---|
[2031] | 62 | typedef GraphAdaptorBase Adaptor; |
---|
[970] | 63 | typedef Graph ParentGraph; |
---|
| 64 | |
---|
[556] | 65 | protected: |
---|
| 66 | Graph* graph; |
---|
[1401] | 67 | GraphAdaptorBase() : graph(0) { } |
---|
[556] | 68 | void setGraph(Graph& _graph) { graph=&_graph; } |
---|
| 69 | |
---|
| 70 | public: |
---|
[1401] | 71 | GraphAdaptorBase(Graph& _graph) : graph(&_graph) { } |
---|
[2034] | 72 | |
---|
[774] | 73 | typedef typename Graph::Node Node; |
---|
| 74 | typedef typename Graph::Edge Edge; |
---|
[556] | 75 | |
---|
[970] | 76 | void first(Node& i) const { graph->first(i); } |
---|
| 77 | void first(Edge& i) const { graph->first(i); } |
---|
| 78 | void firstIn(Edge& i, const Node& n) const { graph->firstIn(i, n); } |
---|
| 79 | void firstOut(Edge& i, const Node& n ) const { graph->firstOut(i, n); } |
---|
[556] | 80 | |
---|
[970] | 81 | void next(Node& i) const { graph->next(i); } |
---|
| 82 | void next(Edge& i) const { graph->next(i); } |
---|
| 83 | void nextIn(Edge& i) const { graph->nextIn(i); } |
---|
| 84 | void nextOut(Edge& i) const { graph->nextOut(i); } |
---|
| 85 | |
---|
[986] | 86 | Node source(const Edge& e) const { return graph->source(e); } |
---|
| 87 | Node target(const Edge& e) const { return graph->target(e); } |
---|
[556] | 88 | |
---|
[1697] | 89 | typedef NodeNumTagIndicator<Graph> NodeNumTag; |
---|
[556] | 90 | int nodeNum() const { return graph->nodeNum(); } |
---|
[1697] | 91 | |
---|
| 92 | typedef EdgeNumTagIndicator<Graph> EdgeNumTag; |
---|
[556] | 93 | int edgeNum() const { return graph->edgeNum(); } |
---|
[1697] | 94 | |
---|
| 95 | typedef FindEdgeTagIndicator<Graph> FindEdgeTag; |
---|
| 96 | Edge findEdge(const Node& source, const Node& target, |
---|
| 97 | const Edge& prev = INVALID) { |
---|
| 98 | return graph->findEdge(source, target, prev); |
---|
| 99 | } |
---|
[556] | 100 | |
---|
[1697] | 101 | Node addNode() const { |
---|
| 102 | return Node(graph->addNode()); |
---|
| 103 | } |
---|
| 104 | |
---|
[986] | 105 | Edge addEdge(const Node& source, const Node& target) const { |
---|
[1697] | 106 | return Edge(graph->addEdge(source, target)); |
---|
| 107 | } |
---|
[556] | 108 | |
---|
| 109 | void erase(const Node& i) const { graph->erase(i); } |
---|
| 110 | void erase(const Edge& i) const { graph->erase(i); } |
---|
| 111 | |
---|
| 112 | void clear() const { graph->clear(); } |
---|
| 113 | |
---|
[739] | 114 | int id(const Node& v) const { return graph->id(v); } |
---|
| 115 | int id(const Edge& e) const { return graph->id(e); } |
---|
[1991] | 116 | |
---|
[2031] | 117 | Node fromNodeId(int id) const { |
---|
| 118 | return graph->fromNodeId(id); |
---|
| 119 | } |
---|
| 120 | |
---|
| 121 | Edge fromEdgeId(int id) const { |
---|
| 122 | return graph->fromEdgeId(id); |
---|
| 123 | } |
---|
| 124 | |
---|
[1991] | 125 | int maxNodeId() const { |
---|
| 126 | return graph->maxNodeId(); |
---|
| 127 | } |
---|
| 128 | |
---|
| 129 | int maxEdgeId() const { |
---|
| 130 | return graph->maxEdgeId(); |
---|
| 131 | } |
---|
| 132 | |
---|
| 133 | typedef typename ItemSetTraits<Graph, Node>::ItemNotifier NodeNotifier; |
---|
| 134 | |
---|
| 135 | NodeNotifier& getNotifier(Node) const { |
---|
| 136 | return graph->getNotifier(Node()); |
---|
| 137 | } |
---|
| 138 | |
---|
| 139 | typedef typename ItemSetTraits<Graph, Edge>::ItemNotifier EdgeNotifier; |
---|
| 140 | |
---|
| 141 | EdgeNotifier& getNotifier(Edge) const { |
---|
| 142 | return graph->getNotifier(Edge()); |
---|
| 143 | } |
---|
[650] | 144 | |
---|
[970] | 145 | template <typename _Value> |
---|
[2031] | 146 | class NodeMap : public Graph::template NodeMap<_Value> { |
---|
[970] | 147 | public: |
---|
[2031] | 148 | |
---|
| 149 | typedef typename Graph::template NodeMap<_Value> Parent; |
---|
| 150 | |
---|
| 151 | explicit NodeMap(const Adaptor& ga) |
---|
| 152 | : Parent(*ga.graph) {} |
---|
| 153 | |
---|
| 154 | NodeMap(const Adaptor& ga, const _Value& value) |
---|
[1991] | 155 | : Parent(*ga.graph, value) { } |
---|
[2031] | 156 | |
---|
| 157 | NodeMap& operator=(const NodeMap& cmap) { |
---|
| 158 | return operator=<NodeMap>(cmap); |
---|
| 159 | } |
---|
| 160 | |
---|
| 161 | template <typename CMap> |
---|
| 162 | NodeMap& operator=(const CMap& cmap) { |
---|
| 163 | Parent::operator=(cmap); |
---|
| 164 | return *this; |
---|
| 165 | } |
---|
| 166 | |
---|
[970] | 167 | }; |
---|
[556] | 168 | |
---|
[970] | 169 | template <typename _Value> |
---|
[2031] | 170 | class EdgeMap : public Graph::template EdgeMap<_Value> { |
---|
[970] | 171 | public: |
---|
[2031] | 172 | |
---|
| 173 | typedef typename Graph::template EdgeMap<_Value> Parent; |
---|
| 174 | |
---|
| 175 | explicit EdgeMap(const Adaptor& ga) |
---|
| 176 | : Parent(*ga.graph) {} |
---|
| 177 | |
---|
| 178 | EdgeMap(const Adaptor& ga, const _Value& value) |
---|
| 179 | : Parent(*ga.graph, value) {} |
---|
| 180 | |
---|
| 181 | EdgeMap& operator=(const EdgeMap& cmap) { |
---|
| 182 | return operator=<EdgeMap>(cmap); |
---|
| 183 | } |
---|
| 184 | |
---|
| 185 | template <typename CMap> |
---|
| 186 | EdgeMap& operator=(const CMap& cmap) { |
---|
| 187 | Parent::operator=(cmap); |
---|
| 188 | return *this; |
---|
| 189 | } |
---|
| 190 | |
---|
[970] | 191 | }; |
---|
[877] | 192 | |
---|
[556] | 193 | }; |
---|
| 194 | |
---|
[970] | 195 | template <typename _Graph> |
---|
[1401] | 196 | class GraphAdaptor : |
---|
[1979] | 197 | public GraphAdaptorExtender<GraphAdaptorBase<_Graph> > { |
---|
[970] | 198 | public: |
---|
| 199 | typedef _Graph Graph; |
---|
[1979] | 200 | typedef GraphAdaptorExtender<GraphAdaptorBase<_Graph> > Parent; |
---|
[970] | 201 | protected: |
---|
[1401] | 202 | GraphAdaptor() : Parent() { } |
---|
[569] | 203 | |
---|
[970] | 204 | public: |
---|
[1755] | 205 | explicit GraphAdaptor(Graph& _graph) { setGraph(_graph); } |
---|
[970] | 206 | }; |
---|
[569] | 207 | |
---|
[1991] | 208 | /// \brief Just gives back a graph adaptor |
---|
| 209 | /// |
---|
| 210 | /// Just gives back a graph adaptor which |
---|
| 211 | /// should be provide original graph |
---|
| 212 | template<typename Graph> |
---|
| 213 | GraphAdaptor<const Graph> |
---|
| 214 | graphAdaptor(const Graph& graph) { |
---|
| 215 | return GraphAdaptor<const Graph>(graph); |
---|
| 216 | } |
---|
| 217 | |
---|
| 218 | |
---|
[997] | 219 | template <typename _Graph> |
---|
[1401] | 220 | class RevGraphAdaptorBase : public GraphAdaptorBase<_Graph> { |
---|
[997] | 221 | public: |
---|
| 222 | typedef _Graph Graph; |
---|
[1401] | 223 | typedef GraphAdaptorBase<_Graph> Parent; |
---|
[997] | 224 | protected: |
---|
[1401] | 225 | RevGraphAdaptorBase() : Parent() { } |
---|
[997] | 226 | public: |
---|
| 227 | typedef typename Parent::Node Node; |
---|
| 228 | typedef typename Parent::Edge Edge; |
---|
| 229 | |
---|
| 230 | void firstIn(Edge& i, const Node& n) const { Parent::firstOut(i, n); } |
---|
| 231 | void firstOut(Edge& i, const Node& n ) const { Parent::firstIn(i, n); } |
---|
| 232 | |
---|
| 233 | void nextIn(Edge& i) const { Parent::nextOut(i); } |
---|
| 234 | void nextOut(Edge& i) const { Parent::nextIn(i); } |
---|
| 235 | |
---|
| 236 | Node source(const Edge& e) const { return Parent::target(e); } |
---|
| 237 | Node target(const Edge& e) const { return Parent::source(e); } |
---|
[1991] | 238 | |
---|
| 239 | typedef FindEdgeTagIndicator<Graph> FindEdgeTag; |
---|
| 240 | Edge findEdge(const Node& source, const Node& target, |
---|
| 241 | const Edge& prev = INVALID) { |
---|
| 242 | return Parent::findEdge(target, source, prev); |
---|
| 243 | } |
---|
| 244 | |
---|
[997] | 245 | }; |
---|
| 246 | |
---|
| 247 | |
---|
[1949] | 248 | ///\brief A graph adaptor which reverses the orientation of the edges. |
---|
| 249 | ///\ingroup graph_adaptors |
---|
| 250 | /// |
---|
| 251 | /// If \c g is defined as |
---|
[1946] | 252 | ///\code |
---|
[923] | 253 | /// ListGraph g; |
---|
[1946] | 254 | ///\endcode |
---|
[1949] | 255 | /// then |
---|
[1946] | 256 | ///\code |
---|
[1991] | 257 | /// RevGraphAdaptor<ListGraph> ga(g); |
---|
[1946] | 258 | ///\endcode |
---|
[1949] | 259 | ///implements the graph obtained from \c g by |
---|
| 260 | /// reversing the orientation of its edges. |
---|
[1946] | 261 | |
---|
[997] | 262 | template<typename _Graph> |
---|
[1401] | 263 | class RevGraphAdaptor : |
---|
[1979] | 264 | public GraphAdaptorExtender<RevGraphAdaptorBase<_Graph> > { |
---|
[650] | 265 | public: |
---|
[997] | 266 | typedef _Graph Graph; |
---|
[1979] | 267 | typedef GraphAdaptorExtender< |
---|
[1401] | 268 | RevGraphAdaptorBase<_Graph> > Parent; |
---|
[556] | 269 | protected: |
---|
[1401] | 270 | RevGraphAdaptor() { } |
---|
[556] | 271 | public: |
---|
[1755] | 272 | explicit RevGraphAdaptor(_Graph& _graph) { setGraph(_graph); } |
---|
[997] | 273 | }; |
---|
[556] | 274 | |
---|
[1991] | 275 | /// \brief Just gives back a reverse graph adaptor |
---|
| 276 | /// |
---|
| 277 | /// Just gives back a reverse graph adaptor |
---|
| 278 | template<typename Graph> |
---|
| 279 | RevGraphAdaptor<const Graph> |
---|
| 280 | revGraphAdaptor(const Graph& graph) { |
---|
| 281 | return RevGraphAdaptor<const Graph>(graph); |
---|
| 282 | } |
---|
| 283 | |
---|
[1681] | 284 | template <typename _Graph, typename NodeFilterMap, |
---|
| 285 | typename EdgeFilterMap, bool checked = true> |
---|
[1401] | 286 | class SubGraphAdaptorBase : public GraphAdaptorBase<_Graph> { |
---|
[992] | 287 | public: |
---|
| 288 | typedef _Graph Graph; |
---|
[2031] | 289 | typedef SubGraphAdaptorBase Adaptor; |
---|
[1401] | 290 | typedef GraphAdaptorBase<_Graph> Parent; |
---|
[992] | 291 | protected: |
---|
| 292 | NodeFilterMap* node_filter_map; |
---|
| 293 | EdgeFilterMap* edge_filter_map; |
---|
[1401] | 294 | SubGraphAdaptorBase() : Parent(), |
---|
[992] | 295 | node_filter_map(0), edge_filter_map(0) { } |
---|
[775] | 296 | |
---|
[992] | 297 | void setNodeFilterMap(NodeFilterMap& _node_filter_map) { |
---|
| 298 | node_filter_map=&_node_filter_map; |
---|
| 299 | } |
---|
| 300 | void setEdgeFilterMap(EdgeFilterMap& _edge_filter_map) { |
---|
| 301 | edge_filter_map=&_edge_filter_map; |
---|
| 302 | } |
---|
| 303 | |
---|
| 304 | public: |
---|
| 305 | |
---|
| 306 | typedef typename Parent::Node Node; |
---|
| 307 | typedef typename Parent::Edge Edge; |
---|
| 308 | |
---|
| 309 | void first(Node& i) const { |
---|
| 310 | Parent::first(i); |
---|
| 311 | while (i!=INVALID && !(*node_filter_map)[i]) Parent::next(i); |
---|
| 312 | } |
---|
[1681] | 313 | |
---|
| 314 | void first(Edge& i) const { |
---|
| 315 | Parent::first(i); |
---|
| 316 | while (i!=INVALID && (!(*edge_filter_map)[i] |
---|
| 317 | || !(*node_filter_map)[Parent::source(i)] |
---|
| 318 | || !(*node_filter_map)[Parent::target(i)])) Parent::next(i); |
---|
| 319 | } |
---|
| 320 | |
---|
| 321 | void firstIn(Edge& i, const Node& n) const { |
---|
| 322 | Parent::firstIn(i, n); |
---|
| 323 | while (i!=INVALID && (!(*edge_filter_map)[i] |
---|
| 324 | || !(*node_filter_map)[Parent::source(i)])) Parent::nextIn(i); |
---|
| 325 | } |
---|
| 326 | |
---|
| 327 | void firstOut(Edge& i, const Node& n) const { |
---|
| 328 | Parent::firstOut(i, n); |
---|
| 329 | while (i!=INVALID && (!(*edge_filter_map)[i] |
---|
| 330 | || !(*node_filter_map)[Parent::target(i)])) Parent::nextOut(i); |
---|
| 331 | } |
---|
| 332 | |
---|
| 333 | void next(Node& i) const { |
---|
| 334 | Parent::next(i); |
---|
| 335 | while (i!=INVALID && !(*node_filter_map)[i]) Parent::next(i); |
---|
| 336 | } |
---|
| 337 | |
---|
| 338 | void next(Edge& i) const { |
---|
| 339 | Parent::next(i); |
---|
| 340 | while (i!=INVALID && (!(*edge_filter_map)[i] |
---|
| 341 | || !(*node_filter_map)[Parent::source(i)] |
---|
| 342 | || !(*node_filter_map)[Parent::target(i)])) Parent::next(i); |
---|
| 343 | } |
---|
| 344 | |
---|
| 345 | void nextIn(Edge& i) const { |
---|
| 346 | Parent::nextIn(i); |
---|
| 347 | while (i!=INVALID && (!(*edge_filter_map)[i] |
---|
| 348 | || !(*node_filter_map)[Parent::source(i)])) Parent::nextIn(i); |
---|
| 349 | } |
---|
| 350 | |
---|
| 351 | void nextOut(Edge& i) const { |
---|
| 352 | Parent::nextOut(i); |
---|
| 353 | while (i!=INVALID && (!(*edge_filter_map)[i] |
---|
| 354 | || !(*node_filter_map)[Parent::target(i)])) Parent::nextOut(i); |
---|
| 355 | } |
---|
| 356 | |
---|
[1951] | 357 | ///\e |
---|
[1949] | 358 | |
---|
[1951] | 359 | /// This function hides \c n in the graph, i.e. the iteration |
---|
| 360 | /// jumps over it. This is done by simply setting the value of \c n |
---|
| 361 | /// to be false in the corresponding node-map. |
---|
[1681] | 362 | void hide(const Node& n) const { node_filter_map->set(n, false); } |
---|
| 363 | |
---|
[1951] | 364 | ///\e |
---|
[1949] | 365 | |
---|
[1951] | 366 | /// This function hides \c e in the graph, i.e. the iteration |
---|
| 367 | /// jumps over it. This is done by simply setting the value of \c e |
---|
| 368 | /// to be false in the corresponding edge-map. |
---|
[1681] | 369 | void hide(const Edge& e) const { edge_filter_map->set(e, false); } |
---|
| 370 | |
---|
[1951] | 371 | ///\e |
---|
[1949] | 372 | |
---|
[1951] | 373 | /// The value of \c n is set to be true in the node-map which stores |
---|
| 374 | /// hide information. If \c n was hidden previuosly, then it is shown |
---|
| 375 | /// again |
---|
[1681] | 376 | void unHide(const Node& n) const { node_filter_map->set(n, true); } |
---|
| 377 | |
---|
[1951] | 378 | ///\e |
---|
[1949] | 379 | |
---|
[1951] | 380 | /// The value of \c e is set to be true in the edge-map which stores |
---|
| 381 | /// hide information. If \c e was hidden previuosly, then it is shown |
---|
| 382 | /// again |
---|
[1681] | 383 | void unHide(const Edge& e) const { edge_filter_map->set(e, true); } |
---|
| 384 | |
---|
[1951] | 385 | /// Returns true if \c n is hidden. |
---|
[1949] | 386 | |
---|
[1951] | 387 | ///\e |
---|
| 388 | /// |
---|
[1681] | 389 | bool hidden(const Node& n) const { return !(*node_filter_map)[n]; } |
---|
| 390 | |
---|
[1951] | 391 | /// Returns true if \c n is hidden. |
---|
[1949] | 392 | |
---|
[1951] | 393 | ///\e |
---|
| 394 | /// |
---|
[1681] | 395 | bool hidden(const Edge& e) const { return !(*edge_filter_map)[e]; } |
---|
| 396 | |
---|
[1697] | 397 | typedef False NodeNumTag; |
---|
| 398 | typedef False EdgeNumTag; |
---|
[1991] | 399 | |
---|
| 400 | typedef FindEdgeTagIndicator<Graph> FindEdgeTag; |
---|
| 401 | Edge findEdge(const Node& source, const Node& target, |
---|
| 402 | const Edge& prev = INVALID) { |
---|
| 403 | if (!(*node_filter_map)[source] || !(*node_filter_map)[target]) { |
---|
| 404 | return INVALID; |
---|
| 405 | } |
---|
| 406 | Edge edge = Parent::findEdge(source, target, prev); |
---|
| 407 | while (edge != INVALID && !(*edge_filter_map)[edge]) { |
---|
| 408 | edge = Parent::findEdge(source, target, edge); |
---|
| 409 | } |
---|
| 410 | return edge; |
---|
| 411 | } |
---|
[2031] | 412 | |
---|
| 413 | template <typename _Value> |
---|
| 414 | class NodeMap |
---|
| 415 | : public SubMapExtender<Adaptor, |
---|
| 416 | typename Parent::template NodeMap<_Value> > |
---|
| 417 | { |
---|
| 418 | public: |
---|
| 419 | typedef Adaptor Graph; |
---|
| 420 | typedef SubMapExtender<Adaptor, typename Parent:: |
---|
| 421 | template NodeMap<_Value> > Parent; |
---|
| 422 | |
---|
| 423 | NodeMap(const Graph& graph) |
---|
| 424 | : Parent(graph) {} |
---|
| 425 | NodeMap(const Graph& graph, const _Value& value) |
---|
| 426 | : Parent(graph, value) {} |
---|
| 427 | |
---|
| 428 | NodeMap& operator=(const NodeMap& cmap) { |
---|
| 429 | return operator=<NodeMap>(cmap); |
---|
| 430 | } |
---|
| 431 | |
---|
| 432 | template <typename CMap> |
---|
| 433 | NodeMap& operator=(const CMap& cmap) { |
---|
| 434 | Parent::operator=(cmap); |
---|
| 435 | return *this; |
---|
| 436 | } |
---|
| 437 | }; |
---|
| 438 | |
---|
| 439 | template <typename _Value> |
---|
| 440 | class EdgeMap |
---|
| 441 | : public SubMapExtender<Adaptor, |
---|
| 442 | typename Parent::template EdgeMap<_Value> > |
---|
| 443 | { |
---|
| 444 | public: |
---|
| 445 | typedef Adaptor Graph; |
---|
| 446 | typedef SubMapExtender<Adaptor, typename Parent:: |
---|
| 447 | template EdgeMap<_Value> > Parent; |
---|
| 448 | |
---|
| 449 | EdgeMap(const Graph& graph) |
---|
| 450 | : Parent(graph) {} |
---|
| 451 | EdgeMap(const Graph& graph, const _Value& value) |
---|
| 452 | : Parent(graph, value) {} |
---|
| 453 | |
---|
| 454 | EdgeMap& operator=(const EdgeMap& cmap) { |
---|
| 455 | return operator=<EdgeMap>(cmap); |
---|
| 456 | } |
---|
| 457 | |
---|
| 458 | template <typename CMap> |
---|
| 459 | EdgeMap& operator=(const CMap& cmap) { |
---|
| 460 | Parent::operator=(cmap); |
---|
| 461 | return *this; |
---|
| 462 | } |
---|
| 463 | }; |
---|
| 464 | |
---|
[1681] | 465 | }; |
---|
| 466 | |
---|
| 467 | template <typename _Graph, typename NodeFilterMap, typename EdgeFilterMap> |
---|
| 468 | class SubGraphAdaptorBase<_Graph, NodeFilterMap, EdgeFilterMap, false> |
---|
| 469 | : public GraphAdaptorBase<_Graph> { |
---|
| 470 | public: |
---|
| 471 | typedef _Graph Graph; |
---|
[2031] | 472 | typedef SubGraphAdaptorBase Adaptor; |
---|
[1681] | 473 | typedef GraphAdaptorBase<_Graph> Parent; |
---|
| 474 | protected: |
---|
| 475 | NodeFilterMap* node_filter_map; |
---|
| 476 | EdgeFilterMap* edge_filter_map; |
---|
| 477 | SubGraphAdaptorBase() : Parent(), |
---|
| 478 | node_filter_map(0), edge_filter_map(0) { } |
---|
| 479 | |
---|
| 480 | void setNodeFilterMap(NodeFilterMap& _node_filter_map) { |
---|
| 481 | node_filter_map=&_node_filter_map; |
---|
| 482 | } |
---|
| 483 | void setEdgeFilterMap(EdgeFilterMap& _edge_filter_map) { |
---|
| 484 | edge_filter_map=&_edge_filter_map; |
---|
| 485 | } |
---|
| 486 | |
---|
| 487 | public: |
---|
| 488 | |
---|
| 489 | typedef typename Parent::Node Node; |
---|
| 490 | typedef typename Parent::Edge Edge; |
---|
| 491 | |
---|
| 492 | void first(Node& i) const { |
---|
| 493 | Parent::first(i); |
---|
| 494 | while (i!=INVALID && !(*node_filter_map)[i]) Parent::next(i); |
---|
| 495 | } |
---|
| 496 | |
---|
[992] | 497 | void first(Edge& i) const { |
---|
| 498 | Parent::first(i); |
---|
| 499 | while (i!=INVALID && !(*edge_filter_map)[i]) Parent::next(i); |
---|
| 500 | } |
---|
[1681] | 501 | |
---|
[992] | 502 | void firstIn(Edge& i, const Node& n) const { |
---|
| 503 | Parent::firstIn(i, n); |
---|
| 504 | while (i!=INVALID && !(*edge_filter_map)[i]) Parent::nextIn(i); |
---|
| 505 | } |
---|
[1681] | 506 | |
---|
[992] | 507 | void firstOut(Edge& i, const Node& n) const { |
---|
| 508 | Parent::firstOut(i, n); |
---|
| 509 | while (i!=INVALID && !(*edge_filter_map)[i]) Parent::nextOut(i); |
---|
| 510 | } |
---|
| 511 | |
---|
| 512 | void next(Node& i) const { |
---|
| 513 | Parent::next(i); |
---|
| 514 | while (i!=INVALID && !(*node_filter_map)[i]) Parent::next(i); |
---|
| 515 | } |
---|
| 516 | void next(Edge& i) const { |
---|
| 517 | Parent::next(i); |
---|
| 518 | while (i!=INVALID && !(*edge_filter_map)[i]) Parent::next(i); |
---|
| 519 | } |
---|
| 520 | void nextIn(Edge& i) const { |
---|
| 521 | Parent::nextIn(i); |
---|
| 522 | while (i!=INVALID && !(*edge_filter_map)[i]) Parent::nextIn(i); |
---|
| 523 | } |
---|
[1681] | 524 | |
---|
[992] | 525 | void nextOut(Edge& i) const { |
---|
| 526 | Parent::nextOut(i); |
---|
| 527 | while (i!=INVALID && !(*edge_filter_map)[i]) Parent::nextOut(i); |
---|
| 528 | } |
---|
| 529 | |
---|
[1951] | 530 | ///\e |
---|
[1949] | 531 | |
---|
[1951] | 532 | /// This function hides \c n in the graph, i.e. the iteration |
---|
| 533 | /// jumps over it. This is done by simply setting the value of \c n |
---|
| 534 | /// to be false in the corresponding node-map. |
---|
[992] | 535 | void hide(const Node& n) const { node_filter_map->set(n, false); } |
---|
| 536 | |
---|
[1951] | 537 | ///\e |
---|
[1949] | 538 | |
---|
[1951] | 539 | /// This function hides \c e in the graph, i.e. the iteration |
---|
| 540 | /// jumps over it. This is done by simply setting the value of \c e |
---|
| 541 | /// to be false in the corresponding edge-map. |
---|
[992] | 542 | void hide(const Edge& e) const { edge_filter_map->set(e, false); } |
---|
| 543 | |
---|
[1951] | 544 | ///\e |
---|
[1949] | 545 | |
---|
[1951] | 546 | /// The value of \c n is set to be true in the node-map which stores |
---|
| 547 | /// hide information. If \c n was hidden previuosly, then it is shown |
---|
| 548 | /// again |
---|
[992] | 549 | void unHide(const Node& n) const { node_filter_map->set(n, true); } |
---|
| 550 | |
---|
[1951] | 551 | ///\e |
---|
[1949] | 552 | |
---|
[1951] | 553 | /// The value of \c e is set to be true in the edge-map which stores |
---|
| 554 | /// hide information. If \c e was hidden previuosly, then it is shown |
---|
| 555 | /// again |
---|
[992] | 556 | void unHide(const Edge& e) const { edge_filter_map->set(e, true); } |
---|
| 557 | |
---|
[1951] | 558 | /// Returns true if \c n is hidden. |
---|
[1949] | 559 | |
---|
[1951] | 560 | ///\e |
---|
| 561 | /// |
---|
[992] | 562 | bool hidden(const Node& n) const { return !(*node_filter_map)[n]; } |
---|
| 563 | |
---|
[1951] | 564 | /// Returns true if \c n is hidden. |
---|
[1949] | 565 | |
---|
[1951] | 566 | ///\e |
---|
| 567 | /// |
---|
[992] | 568 | bool hidden(const Edge& e) const { return !(*edge_filter_map)[e]; } |
---|
| 569 | |
---|
[1697] | 570 | typedef False NodeNumTag; |
---|
| 571 | typedef False EdgeNumTag; |
---|
[1991] | 572 | |
---|
| 573 | typedef FindEdgeTagIndicator<Graph> FindEdgeTag; |
---|
| 574 | Edge findEdge(const Node& source, const Node& target, |
---|
| 575 | const Edge& prev = INVALID) { |
---|
| 576 | if (!(*node_filter_map)[source] || !(*node_filter_map)[target]) { |
---|
| 577 | return INVALID; |
---|
| 578 | } |
---|
| 579 | Edge edge = Parent::findEdge(source, target, prev); |
---|
| 580 | while (edge != INVALID && !(*edge_filter_map)[edge]) { |
---|
| 581 | edge = Parent::findEdge(source, target, edge); |
---|
| 582 | } |
---|
| 583 | return edge; |
---|
| 584 | } |
---|
[2031] | 585 | |
---|
| 586 | template <typename _Value> |
---|
| 587 | class NodeMap |
---|
| 588 | : public SubMapExtender<Adaptor, |
---|
| 589 | typename Parent::template NodeMap<_Value> > |
---|
| 590 | { |
---|
| 591 | public: |
---|
| 592 | typedef Adaptor Graph; |
---|
| 593 | typedef SubMapExtender<Adaptor, typename Parent:: |
---|
| 594 | template NodeMap<_Value> > Parent; |
---|
| 595 | |
---|
| 596 | NodeMap(const Graph& graph) |
---|
| 597 | : Parent(graph) {} |
---|
| 598 | NodeMap(const Graph& graph, const _Value& value) |
---|
| 599 | : Parent(graph, value) {} |
---|
| 600 | |
---|
| 601 | NodeMap& operator=(const NodeMap& cmap) { |
---|
| 602 | return operator=<NodeMap>(cmap); |
---|
| 603 | } |
---|
| 604 | |
---|
| 605 | template <typename CMap> |
---|
| 606 | NodeMap& operator=(const CMap& cmap) { |
---|
| 607 | Parent::operator=(cmap); |
---|
| 608 | return *this; |
---|
| 609 | } |
---|
| 610 | }; |
---|
| 611 | |
---|
| 612 | template <typename _Value> |
---|
| 613 | class EdgeMap |
---|
| 614 | : public SubMapExtender<Adaptor, |
---|
| 615 | typename Parent::template EdgeMap<_Value> > |
---|
| 616 | { |
---|
| 617 | public: |
---|
| 618 | typedef Adaptor Graph; |
---|
| 619 | typedef SubMapExtender<Adaptor, typename Parent:: |
---|
| 620 | template EdgeMap<_Value> > Parent; |
---|
| 621 | |
---|
| 622 | EdgeMap(const Graph& graph) |
---|
| 623 | : Parent(graph) {} |
---|
| 624 | EdgeMap(const Graph& graph, const _Value& value) |
---|
| 625 | : Parent(graph, value) {} |
---|
| 626 | |
---|
| 627 | EdgeMap& operator=(const EdgeMap& cmap) { |
---|
| 628 | return operator=<EdgeMap>(cmap); |
---|
| 629 | } |
---|
| 630 | |
---|
| 631 | template <typename CMap> |
---|
| 632 | EdgeMap& operator=(const CMap& cmap) { |
---|
| 633 | Parent::operator=(cmap); |
---|
| 634 | return *this; |
---|
| 635 | } |
---|
| 636 | }; |
---|
| 637 | |
---|
[992] | 638 | }; |
---|
[775] | 639 | |
---|
[1951] | 640 | /// \brief A graph adaptor for hiding nodes and edges from a graph. |
---|
| 641 | /// \ingroup graph_adaptors |
---|
| 642 | /// |
---|
| 643 | /// SubGraphAdaptor shows the graph with filtered node-set and |
---|
| 644 | /// edge-set. If the \c checked parameter is true then it filters the edgeset |
---|
| 645 | /// to do not get invalid edges without source or target. |
---|
[1952] | 646 | /// Let \f$ G=(V, A) \f$ be a directed graph |
---|
[1951] | 647 | /// and suppose that the graph instance \c g of type ListGraph |
---|
[1952] | 648 | /// implements \f$ G \f$. |
---|
| 649 | /// Let moreover \f$ b_V \f$ and \f$ b_A \f$ be bool-valued functions resp. |
---|
[1951] | 650 | /// on the node-set and edge-set. |
---|
| 651 | /// SubGraphAdaptor<...>::NodeIt iterates |
---|
[1952] | 652 | /// on the node-set \f$ \{v\in V : b_V(v)=true\} \f$ and |
---|
[1951] | 653 | /// SubGraphAdaptor<...>::EdgeIt iterates |
---|
[1952] | 654 | /// on the edge-set \f$ \{e\in A : b_A(e)=true\} \f$. Similarly, |
---|
[1951] | 655 | /// SubGraphAdaptor<...>::OutEdgeIt and |
---|
| 656 | /// SubGraphAdaptor<...>::InEdgeIt iterates |
---|
| 657 | /// only on edges leaving and entering a specific node which have true value. |
---|
| 658 | /// |
---|
| 659 | /// If the \c checked template parameter is false then we have to note that |
---|
| 660 | /// the node-iterator cares only the filter on the node-set, and the |
---|
| 661 | /// edge-iterator cares only the filter on the edge-set. |
---|
| 662 | /// This way the edge-map |
---|
| 663 | /// should filter all edges which's source or target is filtered by the |
---|
| 664 | /// node-filter. |
---|
[1957] | 665 | ///\code |
---|
[1951] | 666 | /// typedef ListGraph Graph; |
---|
| 667 | /// Graph g; |
---|
| 668 | /// typedef Graph::Node Node; |
---|
| 669 | /// typedef Graph::Edge Edge; |
---|
| 670 | /// Node u=g.addNode(); //node of id 0 |
---|
| 671 | /// Node v=g.addNode(); //node of id 1 |
---|
| 672 | /// Node e=g.addEdge(u, v); //edge of id 0 |
---|
| 673 | /// Node f=g.addEdge(v, u); //edge of id 1 |
---|
| 674 | /// Graph::NodeMap<bool> nm(g, true); |
---|
| 675 | /// nm.set(u, false); |
---|
| 676 | /// Graph::EdgeMap<bool> em(g, true); |
---|
| 677 | /// em.set(e, false); |
---|
[1991] | 678 | /// typedef SubGraphAdaptor<Graph, Graph::NodeMap<bool>, Graph::EdgeMap<bool> > SubGA; |
---|
| 679 | /// SubGA ga(g, nm, em); |
---|
| 680 | /// for (SubGA::NodeIt n(ga); n!=INVALID; ++n) std::cout << g.id(n) << std::endl; |
---|
[1951] | 681 | /// std::cout << ":-)" << std::endl; |
---|
[1991] | 682 | /// for (SubGA::EdgeIt e(ga); e!=INVALID; ++e) std::cout << g.id(e) << std::endl; |
---|
[1957] | 683 | ///\endcode |
---|
[1951] | 684 | /// The output of the above code is the following. |
---|
[1957] | 685 | ///\code |
---|
[1951] | 686 | /// 1 |
---|
| 687 | /// :-) |
---|
| 688 | /// 1 |
---|
[1957] | 689 | ///\endcode |
---|
[1991] | 690 | /// Note that \c n is of type \c SubGA::NodeIt, but it can be converted to |
---|
[1951] | 691 | /// \c Graph::Node that is why \c g.id(n) can be applied. |
---|
| 692 | /// |
---|
| 693 | /// For other examples see also the documentation of NodeSubGraphAdaptor and |
---|
| 694 | /// EdgeSubGraphAdaptor. |
---|
| 695 | /// |
---|
| 696 | /// \author Marton Makai |
---|
[1242] | 697 | |
---|
[992] | 698 | template<typename _Graph, typename NodeFilterMap, |
---|
[1681] | 699 | typename EdgeFilterMap, bool checked = true> |
---|
[1401] | 700 | class SubGraphAdaptor : |
---|
[1979] | 701 | public GraphAdaptorExtender< |
---|
[1681] | 702 | SubGraphAdaptorBase<_Graph, NodeFilterMap, EdgeFilterMap, checked> > { |
---|
[650] | 703 | public: |
---|
[992] | 704 | typedef _Graph Graph; |
---|
[2031] | 705 | typedef GraphAdaptorExtender< SubGraphAdaptorBase<_Graph, NodeFilterMap, |
---|
| 706 | EdgeFilterMap, checked> > |
---|
| 707 | Parent; |
---|
| 708 | |
---|
[556] | 709 | protected: |
---|
[1401] | 710 | SubGraphAdaptor() { } |
---|
[992] | 711 | public: |
---|
[2031] | 712 | |
---|
[1401] | 713 | SubGraphAdaptor(_Graph& _graph, NodeFilterMap& _node_filter_map, |
---|
[992] | 714 | EdgeFilterMap& _edge_filter_map) { |
---|
| 715 | setGraph(_graph); |
---|
| 716 | setNodeFilterMap(_node_filter_map); |
---|
| 717 | setEdgeFilterMap(_edge_filter_map); |
---|
| 718 | } |
---|
[2031] | 719 | |
---|
[992] | 720 | }; |
---|
[556] | 721 | |
---|
[1991] | 722 | /// \brief Just gives back a sub graph adaptor |
---|
| 723 | /// |
---|
| 724 | /// Just gives back a sub graph adaptor |
---|
| 725 | template<typename Graph, typename NodeFilterMap, typename EdgeFilterMap> |
---|
| 726 | SubGraphAdaptor<const Graph, NodeFilterMap, EdgeFilterMap> |
---|
| 727 | subGraphAdaptor(const Graph& graph, |
---|
| 728 | NodeFilterMap& nfm, EdgeFilterMap& efm) { |
---|
| 729 | return SubGraphAdaptor<const Graph, NodeFilterMap, EdgeFilterMap> |
---|
| 730 | (graph, nfm, efm); |
---|
| 731 | } |
---|
| 732 | |
---|
| 733 | template<typename Graph, typename NodeFilterMap, typename EdgeFilterMap> |
---|
| 734 | SubGraphAdaptor<const Graph, const NodeFilterMap, EdgeFilterMap> |
---|
| 735 | subGraphAdaptor(const Graph& graph, |
---|
| 736 | NodeFilterMap& nfm, EdgeFilterMap& efm) { |
---|
| 737 | return SubGraphAdaptor<const Graph, const NodeFilterMap, EdgeFilterMap> |
---|
| 738 | (graph, nfm, efm); |
---|
| 739 | } |
---|
| 740 | |
---|
| 741 | template<typename Graph, typename NodeFilterMap, typename EdgeFilterMap> |
---|
| 742 | SubGraphAdaptor<const Graph, NodeFilterMap, const EdgeFilterMap> |
---|
| 743 | subGraphAdaptor(const Graph& graph, |
---|
| 744 | NodeFilterMap& nfm, EdgeFilterMap& efm) { |
---|
| 745 | return SubGraphAdaptor<const Graph, NodeFilterMap, const EdgeFilterMap> |
---|
| 746 | (graph, nfm, efm); |
---|
| 747 | } |
---|
| 748 | |
---|
| 749 | template<typename Graph, typename NodeFilterMap, typename EdgeFilterMap> |
---|
| 750 | SubGraphAdaptor<const Graph, const NodeFilterMap, const EdgeFilterMap> |
---|
| 751 | subGraphAdaptor(const Graph& graph, |
---|
| 752 | NodeFilterMap& nfm, EdgeFilterMap& efm) { |
---|
| 753 | return SubGraphAdaptor<const Graph, const NodeFilterMap, |
---|
| 754 | const EdgeFilterMap>(graph, nfm, efm); |
---|
| 755 | } |
---|
| 756 | |
---|
[556] | 757 | |
---|
[569] | 758 | |
---|
[1951] | 759 | ///\brief An adaptor for hiding nodes from a graph. |
---|
| 760 | ///\ingroup graph_adaptors |
---|
| 761 | /// |
---|
| 762 | ///An adaptor for hiding nodes from a graph. |
---|
| 763 | ///This adaptor specializes SubGraphAdaptor in the way that only |
---|
| 764 | ///the node-set |
---|
| 765 | ///can be filtered. In usual case the checked parameter is true, we get the |
---|
| 766 | ///induced subgraph. But if the checked parameter is false then we can only |
---|
| 767 | ///filter only isolated nodes. |
---|
| 768 | ///\author Marton Makai |
---|
[1681] | 769 | template<typename Graph, typename NodeFilterMap, bool checked = true> |
---|
[1401] | 770 | class NodeSubGraphAdaptor : |
---|
| 771 | public SubGraphAdaptor<Graph, NodeFilterMap, |
---|
[1681] | 772 | ConstMap<typename Graph::Edge,bool>, checked> { |
---|
[933] | 773 | public: |
---|
[2031] | 774 | |
---|
[1401] | 775 | typedef SubGraphAdaptor<Graph, NodeFilterMap, |
---|
[2031] | 776 | ConstMap<typename Graph::Edge,bool>, checked > |
---|
| 777 | Parent; |
---|
| 778 | |
---|
[933] | 779 | protected: |
---|
| 780 | ConstMap<typename Graph::Edge, bool> const_true_map; |
---|
[1991] | 781 | |
---|
| 782 | NodeSubGraphAdaptor() : const_true_map(true) { |
---|
| 783 | Parent::setEdgeFilterMap(const_true_map); |
---|
| 784 | } |
---|
| 785 | |
---|
[933] | 786 | public: |
---|
[2031] | 787 | |
---|
[1401] | 788 | NodeSubGraphAdaptor(Graph& _graph, NodeFilterMap& _node_filter_map) : |
---|
[933] | 789 | Parent(), const_true_map(true) { |
---|
| 790 | Parent::setGraph(_graph); |
---|
| 791 | Parent::setNodeFilterMap(_node_filter_map); |
---|
| 792 | Parent::setEdgeFilterMap(const_true_map); |
---|
| 793 | } |
---|
[2031] | 794 | |
---|
[933] | 795 | }; |
---|
| 796 | |
---|
| 797 | |
---|
[1991] | 798 | /// \brief Just gives back a node sub graph adaptor |
---|
| 799 | /// |
---|
| 800 | /// Just gives back a node sub graph adaptor |
---|
| 801 | template<typename Graph, typename NodeFilterMap> |
---|
| 802 | NodeSubGraphAdaptor<const Graph, NodeFilterMap> |
---|
| 803 | nodeSubGraphAdaptor(const Graph& graph, NodeFilterMap& nfm) { |
---|
| 804 | return NodeSubGraphAdaptor<const Graph, NodeFilterMap>(graph, nfm); |
---|
| 805 | } |
---|
| 806 | |
---|
| 807 | template<typename Graph, typename NodeFilterMap> |
---|
| 808 | NodeSubGraphAdaptor<const Graph, const NodeFilterMap> |
---|
| 809 | nodeSubGraphAdaptor(const Graph& graph, const NodeFilterMap& nfm) { |
---|
| 810 | return NodeSubGraphAdaptor<const Graph, const NodeFilterMap>(graph, nfm); |
---|
| 811 | } |
---|
| 812 | |
---|
[1951] | 813 | ///\brief An adaptor for hiding edges from a graph. |
---|
| 814 | /// |
---|
| 815 | ///An adaptor for hiding edges from a graph. |
---|
| 816 | ///This adaptor specializes SubGraphAdaptor in the way that |
---|
| 817 | ///only the edge-set |
---|
| 818 | ///can be filtered. The usefulness of this adaptor is demonstrated in the |
---|
| 819 | ///problem of searching a maximum number of edge-disjoint shortest paths |
---|
| 820 | ///between |
---|
| 821 | ///two nodes \c s and \c t. Shortest here means being shortest w.r.t. |
---|
| 822 | ///non-negative edge-lengths. Note that |
---|
| 823 | ///the comprehension of the presented solution |
---|
| 824 | ///need's some elementary knowledge from combinatorial optimization. |
---|
| 825 | /// |
---|
| 826 | ///If a single shortest path is to be |
---|
| 827 | ///searched between \c s and \c t, then this can be done easily by |
---|
| 828 | ///applying the Dijkstra algorithm. What happens, if a maximum number of |
---|
| 829 | ///edge-disjoint shortest paths is to be computed. It can be proved that an |
---|
| 830 | ///edge can be in a shortest path if and only |
---|
| 831 | ///if it is tight with respect to |
---|
| 832 | ///the potential function computed by Dijkstra. |
---|
| 833 | ///Moreover, any path containing |
---|
| 834 | ///only such edges is a shortest one. |
---|
| 835 | ///Thus we have to compute a maximum number |
---|
| 836 | ///of edge-disjoint paths between \c s and \c t in |
---|
| 837 | ///the graph which has edge-set |
---|
| 838 | ///all the tight edges. The computation will be demonstrated |
---|
| 839 | ///on the following |
---|
| 840 | ///graph, which is read from the dimacs file \c sub_graph_adaptor_demo.dim. |
---|
| 841 | ///The full source code is available in \ref sub_graph_adaptor_demo.cc. |
---|
| 842 | ///If you are interested in more demo programs, you can use |
---|
| 843 | ///\ref dim_to_dot.cc to generate .dot files from dimacs files. |
---|
| 844 | ///The .dot file of the following figure was generated by |
---|
| 845 | ///the demo program \ref dim_to_dot.cc. |
---|
| 846 | /// |
---|
| 847 | ///\dot |
---|
| 848 | ///digraph lemon_dot_example { |
---|
| 849 | ///node [ shape=ellipse, fontname=Helvetica, fontsize=10 ]; |
---|
| 850 | ///n0 [ label="0 (s)" ]; |
---|
| 851 | ///n1 [ label="1" ]; |
---|
| 852 | ///n2 [ label="2" ]; |
---|
| 853 | ///n3 [ label="3" ]; |
---|
| 854 | ///n4 [ label="4" ]; |
---|
| 855 | ///n5 [ label="5" ]; |
---|
| 856 | ///n6 [ label="6 (t)" ]; |
---|
| 857 | ///edge [ shape=ellipse, fontname=Helvetica, fontsize=10 ]; |
---|
| 858 | ///n5 -> n6 [ label="9, length:4" ]; |
---|
| 859 | ///n4 -> n6 [ label="8, length:2" ]; |
---|
| 860 | ///n3 -> n5 [ label="7, length:1" ]; |
---|
| 861 | ///n2 -> n5 [ label="6, length:3" ]; |
---|
| 862 | ///n2 -> n6 [ label="5, length:5" ]; |
---|
| 863 | ///n2 -> n4 [ label="4, length:2" ]; |
---|
| 864 | ///n1 -> n4 [ label="3, length:3" ]; |
---|
| 865 | ///n0 -> n3 [ label="2, length:1" ]; |
---|
| 866 | ///n0 -> n2 [ label="1, length:2" ]; |
---|
| 867 | ///n0 -> n1 [ label="0, length:3" ]; |
---|
| 868 | ///} |
---|
| 869 | ///\enddot |
---|
| 870 | /// |
---|
| 871 | ///\code |
---|
| 872 | ///Graph g; |
---|
| 873 | ///Node s, t; |
---|
| 874 | ///LengthMap length(g); |
---|
| 875 | /// |
---|
| 876 | ///readDimacs(std::cin, g, length, s, t); |
---|
| 877 | /// |
---|
| 878 | ///cout << "edges with lengths (of form id, source--length->target): " << endl; |
---|
| 879 | ///for(EdgeIt e(g); e!=INVALID; ++e) |
---|
| 880 | /// cout << g.id(e) << ", " << g.id(g.source(e)) << "--" |
---|
| 881 | /// << length[e] << "->" << g.id(g.target(e)) << endl; |
---|
| 882 | /// |
---|
| 883 | ///cout << "s: " << g.id(s) << " t: " << g.id(t) << endl; |
---|
| 884 | ///\endcode |
---|
| 885 | ///Next, the potential function is computed with Dijkstra. |
---|
| 886 | ///\code |
---|
| 887 | ///typedef Dijkstra<Graph, LengthMap> Dijkstra; |
---|
| 888 | ///Dijkstra dijkstra(g, length); |
---|
| 889 | ///dijkstra.run(s); |
---|
| 890 | ///\endcode |
---|
| 891 | ///Next, we consrtruct a map which filters the edge-set to the tight edges. |
---|
| 892 | ///\code |
---|
| 893 | ///typedef TightEdgeFilterMap<Graph, const Dijkstra::DistMap, LengthMap> |
---|
| 894 | /// TightEdgeFilter; |
---|
| 895 | ///TightEdgeFilter tight_edge_filter(g, dijkstra.distMap(), length); |
---|
| 896 | /// |
---|
[1991] | 897 | ///typedef EdgeSubGraphAdaptor<Graph, TightEdgeFilter> SubGA; |
---|
| 898 | ///SubGA ga(g, tight_edge_filter); |
---|
[1951] | 899 | ///\endcode |
---|
| 900 | ///Then, the maximum nimber of edge-disjoint \c s-\c t paths are computed |
---|
| 901 | ///with a max flow algorithm Preflow. |
---|
| 902 | ///\code |
---|
| 903 | ///ConstMap<Edge, int> const_1_map(1); |
---|
| 904 | ///Graph::EdgeMap<int> flow(g, 0); |
---|
| 905 | /// |
---|
[1991] | 906 | ///Preflow<SubGA, int, ConstMap<Edge, int>, Graph::EdgeMap<int> > |
---|
| 907 | /// preflow(ga, s, t, const_1_map, flow); |
---|
[1951] | 908 | ///preflow.run(); |
---|
| 909 | ///\endcode |
---|
| 910 | ///Last, the output is: |
---|
| 911 | ///\code |
---|
| 912 | ///cout << "maximum number of edge-disjoint shortest path: " |
---|
| 913 | /// << preflow.flowValue() << endl; |
---|
| 914 | ///cout << "edges of the maximum number of edge-disjoint shortest s-t paths: " |
---|
| 915 | /// << endl; |
---|
| 916 | ///for(EdgeIt e(g); e!=INVALID; ++e) |
---|
| 917 | /// if (flow[e]) |
---|
| 918 | /// cout << " " << g.id(g.source(e)) << "--" |
---|
| 919 | /// << length[e] << "->" << g.id(g.target(e)) << endl; |
---|
| 920 | ///\endcode |
---|
| 921 | ///The program has the following (expected :-)) output: |
---|
| 922 | ///\code |
---|
| 923 | ///edges with lengths (of form id, source--length->target): |
---|
| 924 | /// 9, 5--4->6 |
---|
| 925 | /// 8, 4--2->6 |
---|
| 926 | /// 7, 3--1->5 |
---|
| 927 | /// 6, 2--3->5 |
---|
| 928 | /// 5, 2--5->6 |
---|
| 929 | /// 4, 2--2->4 |
---|
| 930 | /// 3, 1--3->4 |
---|
| 931 | /// 2, 0--1->3 |
---|
| 932 | /// 1, 0--2->2 |
---|
| 933 | /// 0, 0--3->1 |
---|
| 934 | ///s: 0 t: 6 |
---|
| 935 | ///maximum number of edge-disjoint shortest path: 2 |
---|
| 936 | ///edges of the maximum number of edge-disjoint shortest s-t paths: |
---|
| 937 | /// 9, 5--4->6 |
---|
| 938 | /// 8, 4--2->6 |
---|
| 939 | /// 7, 3--1->5 |
---|
| 940 | /// 4, 2--2->4 |
---|
| 941 | /// 2, 0--1->3 |
---|
| 942 | /// 1, 0--2->2 |
---|
| 943 | ///\endcode |
---|
| 944 | /// |
---|
| 945 | ///\author Marton Makai |
---|
[932] | 946 | template<typename Graph, typename EdgeFilterMap> |
---|
[1401] | 947 | class EdgeSubGraphAdaptor : |
---|
| 948 | public SubGraphAdaptor<Graph, ConstMap<typename Graph::Node,bool>, |
---|
[1681] | 949 | EdgeFilterMap, false> { |
---|
[932] | 950 | public: |
---|
[1401] | 951 | typedef SubGraphAdaptor<Graph, ConstMap<typename Graph::Node,bool>, |
---|
[1685] | 952 | EdgeFilterMap, false> Parent; |
---|
[932] | 953 | protected: |
---|
| 954 | ConstMap<typename Graph::Node, bool> const_true_map; |
---|
[1991] | 955 | |
---|
| 956 | EdgeSubGraphAdaptor() : const_true_map(true) { |
---|
| 957 | Parent::setNodeFilterMap(const_true_map); |
---|
| 958 | } |
---|
| 959 | |
---|
[932] | 960 | public: |
---|
[2031] | 961 | |
---|
[1401] | 962 | EdgeSubGraphAdaptor(Graph& _graph, EdgeFilterMap& _edge_filter_map) : |
---|
[932] | 963 | Parent(), const_true_map(true) { |
---|
| 964 | Parent::setGraph(_graph); |
---|
| 965 | Parent::setNodeFilterMap(const_true_map); |
---|
| 966 | Parent::setEdgeFilterMap(_edge_filter_map); |
---|
| 967 | } |
---|
[2031] | 968 | |
---|
[932] | 969 | }; |
---|
| 970 | |
---|
[1991] | 971 | /// \brief Just gives back an edge sub graph adaptor |
---|
| 972 | /// |
---|
| 973 | /// Just gives back an edge sub graph adaptor |
---|
| 974 | template<typename Graph, typename EdgeFilterMap> |
---|
| 975 | EdgeSubGraphAdaptor<const Graph, EdgeFilterMap> |
---|
| 976 | edgeSubGraphAdaptor(const Graph& graph, EdgeFilterMap& efm) { |
---|
| 977 | return EdgeSubGraphAdaptor<const Graph, EdgeFilterMap>(graph, efm); |
---|
| 978 | } |
---|
| 979 | |
---|
| 980 | template<typename Graph, typename EdgeFilterMap> |
---|
| 981 | EdgeSubGraphAdaptor<const Graph, const EdgeFilterMap> |
---|
| 982 | edgeSubGraphAdaptor(const Graph& graph, const EdgeFilterMap& efm) { |
---|
| 983 | return EdgeSubGraphAdaptor<const Graph, const EdgeFilterMap>(graph, efm); |
---|
| 984 | } |
---|
| 985 | |
---|
| 986 | template <typename _Graph, typename Enable = void> |
---|
[1980] | 987 | class UndirGraphAdaptorBase : |
---|
[1979] | 988 | public UGraphBaseExtender<GraphAdaptorBase<_Graph> > { |
---|
[1383] | 989 | public: |
---|
| 990 | typedef _Graph Graph; |
---|
[2031] | 991 | typedef UndirGraphAdaptorBase Adaptor; |
---|
[1979] | 992 | typedef UGraphBaseExtender<GraphAdaptorBase<_Graph> > Parent; |
---|
[1991] | 993 | |
---|
[1383] | 994 | protected: |
---|
[1991] | 995 | |
---|
| 996 | UndirGraphAdaptorBase() : Parent() {} |
---|
| 997 | |
---|
[1383] | 998 | public: |
---|
[1991] | 999 | |
---|
[1909] | 1000 | typedef typename Parent::UEdge UEdge; |
---|
[1383] | 1001 | typedef typename Parent::Edge Edge; |
---|
[1991] | 1002 | |
---|
[2031] | 1003 | private: |
---|
[1383] | 1004 | |
---|
[1991] | 1005 | template <typename _Value> |
---|
[2031] | 1006 | class EdgeMapBase { |
---|
[1991] | 1007 | private: |
---|
| 1008 | |
---|
| 1009 | typedef typename _Graph::template EdgeMap<_Value> MapImpl; |
---|
| 1010 | |
---|
[1383] | 1011 | public: |
---|
[1991] | 1012 | |
---|
| 1013 | typedef typename MapTraits<MapImpl>::ReferenceMapTag ReferenceMapTag; |
---|
| 1014 | |
---|
| 1015 | typedef _Value Value; |
---|
[1383] | 1016 | typedef Edge Key; |
---|
| 1017 | |
---|
[2031] | 1018 | EdgeMapBase(const Adaptor& adaptor) : |
---|
| 1019 | forward_map(*adaptor.graph), backward_map(*adaptor.graph) {} |
---|
[569] | 1020 | |
---|
[2031] | 1021 | EdgeMapBase(const Adaptor& adaptor, const Value& v) |
---|
| 1022 | : forward_map(*adaptor.graph, v), backward_map(*adaptor.graph, v) {} |
---|
[1383] | 1023 | |
---|
[1991] | 1024 | void set(const Edge& e, const Value& a) { |
---|
| 1025 | if (Parent::direction(e)) { |
---|
[1383] | 1026 | forward_map.set(e, a); |
---|
[1991] | 1027 | } else { |
---|
| 1028 | backward_map.set(e, a); |
---|
| 1029 | } |
---|
[1383] | 1030 | } |
---|
[556] | 1031 | |
---|
[1991] | 1032 | typename MapTraits<MapImpl>::ConstReturnValue operator[](Edge e) const { |
---|
| 1033 | if (Parent::direction(e)) { |
---|
[1383] | 1034 | return forward_map[e]; |
---|
[1991] | 1035 | } else { |
---|
[1383] | 1036 | return backward_map[e]; |
---|
[1991] | 1037 | } |
---|
[556] | 1038 | } |
---|
[1991] | 1039 | |
---|
| 1040 | typename MapTraits<MapImpl>::ReturnValue operator[](Edge e) { |
---|
| 1041 | if (Parent::direction(e)) { |
---|
| 1042 | return forward_map[e]; |
---|
| 1043 | } else { |
---|
| 1044 | return backward_map[e]; |
---|
| 1045 | } |
---|
| 1046 | } |
---|
| 1047 | |
---|
| 1048 | protected: |
---|
| 1049 | |
---|
| 1050 | MapImpl forward_map, backward_map; |
---|
| 1051 | |
---|
[556] | 1052 | }; |
---|
[2031] | 1053 | |
---|
| 1054 | public: |
---|
| 1055 | |
---|
| 1056 | template <typename _Value> |
---|
| 1057 | class EdgeMap |
---|
| 1058 | : public SubMapExtender<Adaptor, EdgeMapBase<_Value> > |
---|
| 1059 | { |
---|
| 1060 | public: |
---|
| 1061 | typedef Adaptor Graph; |
---|
| 1062 | typedef SubMapExtender<Adaptor, EdgeMapBase<_Value> > Parent; |
---|
| 1063 | |
---|
| 1064 | EdgeMap(const Graph& graph) |
---|
| 1065 | : Parent(graph) {} |
---|
| 1066 | EdgeMap(const Graph& graph, const _Value& value) |
---|
| 1067 | : Parent(graph, value) {} |
---|
| 1068 | |
---|
| 1069 | EdgeMap& operator=(const EdgeMap& cmap) { |
---|
| 1070 | return operator=<EdgeMap>(cmap); |
---|
| 1071 | } |
---|
| 1072 | |
---|
| 1073 | template <typename CMap> |
---|
| 1074 | EdgeMap& operator=(const CMap& cmap) { |
---|
| 1075 | Parent::operator=(cmap); |
---|
| 1076 | return *this; |
---|
| 1077 | } |
---|
| 1078 | }; |
---|
[1383] | 1079 | |
---|
[1991] | 1080 | template <typename _Value> |
---|
[2031] | 1081 | class UEdgeMap : public Graph::template EdgeMap<_Value> { |
---|
[1383] | 1082 | public: |
---|
[2031] | 1083 | |
---|
| 1084 | typedef typename Graph::template EdgeMap<_Value> Parent; |
---|
| 1085 | |
---|
| 1086 | explicit UEdgeMap(const Adaptor& ga) |
---|
| 1087 | : Parent(*ga.graph) {} |
---|
[1991] | 1088 | |
---|
[2031] | 1089 | UEdgeMap(const Adaptor& ga, const _Value& value) |
---|
| 1090 | : Parent(*ga.graph, value) {} |
---|
[1991] | 1091 | |
---|
[2031] | 1092 | UEdgeMap& operator=(const UEdgeMap& cmap) { |
---|
| 1093 | return operator=<UEdgeMap>(cmap); |
---|
| 1094 | } |
---|
[1991] | 1095 | |
---|
[2031] | 1096 | template <typename CMap> |
---|
| 1097 | UEdgeMap& operator=(const CMap& cmap) { |
---|
| 1098 | Parent::operator=(cmap); |
---|
| 1099 | return *this; |
---|
| 1100 | } |
---|
| 1101 | |
---|
[1991] | 1102 | }; |
---|
| 1103 | |
---|
| 1104 | }; |
---|
[556] | 1105 | |
---|
[1991] | 1106 | template <typename _Graph> |
---|
| 1107 | class UndirGraphAdaptorBase< |
---|
| 1108 | _Graph, typename enable_if< |
---|
| 1109 | typename _Graph::EdgeNotifier::Notifier>::type > |
---|
| 1110 | : public UGraphBaseExtender<GraphAdaptorBase<_Graph> > { |
---|
| 1111 | public: |
---|
| 1112 | |
---|
| 1113 | typedef _Graph Graph; |
---|
[2031] | 1114 | typedef UndirGraphAdaptorBase Adaptor; |
---|
[1991] | 1115 | typedef UGraphBaseExtender<GraphAdaptorBase<_Graph> > Parent; |
---|
| 1116 | |
---|
| 1117 | protected: |
---|
| 1118 | |
---|
| 1119 | UndirGraphAdaptorBase() |
---|
[1999] | 1120 | : edge_notifier(*this), edge_notifier_proxy(edge_notifier) {} |
---|
[1991] | 1121 | |
---|
| 1122 | void setGraph(_Graph& graph) { |
---|
| 1123 | Parent::setGraph(graph); |
---|
| 1124 | edge_notifier_proxy.setUEdgeNotifier(graph.getNotifier(UEdge())); |
---|
| 1125 | } |
---|
| 1126 | |
---|
| 1127 | public: |
---|
| 1128 | |
---|
| 1129 | ~UndirGraphAdaptorBase() { |
---|
[1999] | 1130 | edge_notifier.clear(); |
---|
| 1131 | } |
---|
| 1132 | |
---|
| 1133 | int maxId(typename Parent::Edge) const { |
---|
| 1134 | return Parent::maxEdgeId(); |
---|
[1991] | 1135 | } |
---|
| 1136 | |
---|
| 1137 | |
---|
| 1138 | typedef typename Parent::UEdge UEdge; |
---|
| 1139 | typedef typename Parent::Edge Edge; |
---|
| 1140 | |
---|
| 1141 | typedef typename Parent::EdgeNotifier UEdgeNotifier; |
---|
| 1142 | |
---|
| 1143 | using Parent::getNotifier; |
---|
| 1144 | |
---|
[1999] | 1145 | typedef AlterationNotifier<UndirGraphAdaptorBase, Edge> EdgeNotifier; |
---|
[1991] | 1146 | EdgeNotifier& getNotifier(Edge) const { return edge_notifier; } |
---|
| 1147 | |
---|
| 1148 | protected: |
---|
| 1149 | |
---|
| 1150 | class NotifierProxy : public UEdgeNotifier::ObserverBase { |
---|
| 1151 | public: |
---|
| 1152 | |
---|
| 1153 | typedef typename UEdgeNotifier::ObserverBase Parent; |
---|
| 1154 | typedef UndirGraphAdaptorBase AdaptorBase; |
---|
[1383] | 1155 | |
---|
[1991] | 1156 | NotifierProxy(EdgeNotifier& _edge_notifier) |
---|
| 1157 | : Parent(), edge_notifier(_edge_notifier) { |
---|
[1383] | 1158 | } |
---|
[556] | 1159 | |
---|
[1991] | 1160 | virtual ~NotifierProxy() { |
---|
| 1161 | if (Parent::attached()) { |
---|
| 1162 | Parent::detach(); |
---|
| 1163 | } |
---|
[1383] | 1164 | } |
---|
[1991] | 1165 | |
---|
| 1166 | void setUEdgeNotifier(UEdgeNotifier& _uedge_notifier) { |
---|
| 1167 | Parent::attach(_uedge_notifier); |
---|
| 1168 | } |
---|
| 1169 | |
---|
| 1170 | |
---|
| 1171 | protected: |
---|
| 1172 | |
---|
| 1173 | virtual void add(const UEdge& uedge) { |
---|
| 1174 | std::vector<Edge> edges; |
---|
| 1175 | edges.push_back(AdaptorBase::Parent::direct(uedge, true)); |
---|
| 1176 | edges.push_back(AdaptorBase::Parent::direct(uedge, false)); |
---|
| 1177 | edge_notifier.add(edges); |
---|
| 1178 | } |
---|
| 1179 | virtual void add(const std::vector<UEdge>& uedges) { |
---|
| 1180 | std::vector<Edge> edges; |
---|
| 1181 | for (int i = 0; i < (int)uedges.size(); ++i) { |
---|
| 1182 | edges.push_back(AdaptorBase::Parent::direct(uedges[i], true)); |
---|
| 1183 | edges.push_back(AdaptorBase::Parent::direct(uedges[i], false)); |
---|
| 1184 | } |
---|
| 1185 | edge_notifier.add(edges); |
---|
| 1186 | } |
---|
| 1187 | virtual void erase(const UEdge& uedge) { |
---|
| 1188 | std::vector<Edge> edges; |
---|
| 1189 | edges.push_back(AdaptorBase::Parent::direct(uedge, true)); |
---|
| 1190 | edges.push_back(AdaptorBase::Parent::direct(uedge, false)); |
---|
| 1191 | edge_notifier.erase(edges); |
---|
| 1192 | } |
---|
| 1193 | virtual void erase(const std::vector<UEdge>& uedges) { |
---|
| 1194 | std::vector<Edge> edges; |
---|
| 1195 | for (int i = 0; i < (int)uedges.size(); ++i) { |
---|
| 1196 | edges.push_back(AdaptorBase::Parent::direct(uedges[i], true)); |
---|
| 1197 | edges.push_back(AdaptorBase::Parent::direct(uedges[i], false)); |
---|
| 1198 | } |
---|
| 1199 | edge_notifier.erase(edges); |
---|
| 1200 | } |
---|
| 1201 | virtual void build() { |
---|
| 1202 | edge_notifier.build(); |
---|
| 1203 | } |
---|
| 1204 | virtual void clear() { |
---|
| 1205 | edge_notifier.clear(); |
---|
| 1206 | } |
---|
| 1207 | |
---|
| 1208 | EdgeNotifier& edge_notifier; |
---|
| 1209 | }; |
---|
| 1210 | |
---|
| 1211 | |
---|
| 1212 | mutable EdgeNotifier edge_notifier; |
---|
| 1213 | NotifierProxy edge_notifier_proxy; |
---|
| 1214 | |
---|
[2031] | 1215 | private: |
---|
[1991] | 1216 | |
---|
| 1217 | template <typename _Value> |
---|
[2031] | 1218 | class EdgeMapBase { |
---|
[1991] | 1219 | private: |
---|
| 1220 | |
---|
| 1221 | typedef typename _Graph::template EdgeMap<_Value> MapImpl; |
---|
| 1222 | |
---|
| 1223 | public: |
---|
| 1224 | |
---|
| 1225 | typedef typename MapTraits<MapImpl>::ReferenceMapTag ReferenceMapTag; |
---|
| 1226 | |
---|
| 1227 | typedef _Value Value; |
---|
| 1228 | typedef Edge Key; |
---|
| 1229 | |
---|
[2031] | 1230 | EdgeMapBase(const Adaptor& adaptor) : |
---|
| 1231 | forward_map(*adaptor.graph), backward_map(*adaptor.graph) {} |
---|
[1991] | 1232 | |
---|
[2031] | 1233 | EdgeMapBase(const Adaptor& adaptor, const Value& v) |
---|
| 1234 | : forward_map(*adaptor.graph, v), backward_map(*adaptor.graph, v) {} |
---|
[1991] | 1235 | |
---|
| 1236 | void set(const Edge& e, const Value& a) { |
---|
| 1237 | if (Parent::direction(e)) { |
---|
| 1238 | forward_map.set(e, a); |
---|
| 1239 | } else { |
---|
| 1240 | backward_map.set(e, a); |
---|
| 1241 | } |
---|
| 1242 | } |
---|
| 1243 | |
---|
[2031] | 1244 | typename MapTraits<MapImpl>::ConstReturnValue operator[](Edge e) const { |
---|
[1991] | 1245 | if (Parent::direction(e)) { |
---|
| 1246 | return forward_map[e]; |
---|
| 1247 | } else { |
---|
| 1248 | return backward_map[e]; |
---|
| 1249 | } |
---|
| 1250 | } |
---|
| 1251 | |
---|
[2031] | 1252 | typename MapTraits<MapImpl>::ReturnValue operator[](Edge e) { |
---|
[1991] | 1253 | if (Parent::direction(e)) { |
---|
| 1254 | return forward_map[e]; |
---|
| 1255 | } else { |
---|
| 1256 | return backward_map[e]; |
---|
| 1257 | } |
---|
| 1258 | } |
---|
| 1259 | |
---|
| 1260 | protected: |
---|
| 1261 | |
---|
| 1262 | MapImpl forward_map, backward_map; |
---|
| 1263 | |
---|
| 1264 | }; |
---|
[2031] | 1265 | |
---|
| 1266 | public: |
---|
| 1267 | |
---|
| 1268 | template <typename _Value> |
---|
| 1269 | class EdgeMap |
---|
| 1270 | : public SubMapExtender<Adaptor, EdgeMapBase<_Value> > |
---|
| 1271 | { |
---|
| 1272 | public: |
---|
| 1273 | typedef Adaptor Graph; |
---|
| 1274 | typedef SubMapExtender<Adaptor, EdgeMapBase<_Value> > Parent; |
---|
| 1275 | |
---|
| 1276 | EdgeMap(const Graph& graph) |
---|
| 1277 | : Parent(graph) {} |
---|
| 1278 | EdgeMap(const Graph& graph, const _Value& value) |
---|
| 1279 | : Parent(graph, value) {} |
---|
| 1280 | |
---|
| 1281 | EdgeMap& operator=(const EdgeMap& cmap) { |
---|
| 1282 | return operator=<EdgeMap>(cmap); |
---|
| 1283 | } |
---|
| 1284 | |
---|
| 1285 | template <typename CMap> |
---|
| 1286 | EdgeMap& operator=(const CMap& cmap) { |
---|
| 1287 | Parent::operator=(cmap); |
---|
| 1288 | return *this; |
---|
| 1289 | } |
---|
| 1290 | }; |
---|
[1991] | 1291 | |
---|
| 1292 | template <typename _Value> |
---|
[2031] | 1293 | class UEdgeMap : public Graph::template EdgeMap<_Value> { |
---|
[1991] | 1294 | public: |
---|
[2031] | 1295 | |
---|
| 1296 | typedef typename Graph::template EdgeMap<_Value> Parent; |
---|
| 1297 | |
---|
| 1298 | explicit UEdgeMap(const Adaptor& ga) |
---|
| 1299 | : Parent(*ga.graph) {} |
---|
[1991] | 1300 | |
---|
[2031] | 1301 | UEdgeMap(const Adaptor& ga, const _Value& value) |
---|
| 1302 | : Parent(*ga.graph, value) {} |
---|
[1991] | 1303 | |
---|
[2031] | 1304 | UEdgeMap& operator=(const UEdgeMap& cmap) { |
---|
| 1305 | return operator=<UEdgeMap>(cmap); |
---|
| 1306 | } |
---|
[1991] | 1307 | |
---|
[2031] | 1308 | template <typename CMap> |
---|
| 1309 | UEdgeMap& operator=(const CMap& cmap) { |
---|
| 1310 | Parent::operator=(cmap); |
---|
| 1311 | return *this; |
---|
| 1312 | } |
---|
| 1313 | |
---|
[1383] | 1314 | }; |
---|
| 1315 | |
---|
| 1316 | }; |
---|
| 1317 | |
---|
[1951] | 1318 | ///\brief An undirected graph is made from a directed graph by an adaptor |
---|
| 1319 | ///\ingroup graph_adaptors |
---|
| 1320 | /// |
---|
| 1321 | /// Undocumented, untested!!! |
---|
| 1322 | /// If somebody knows nice demo application, let's polulate it. |
---|
| 1323 | /// |
---|
| 1324 | /// \author Marton Makai |
---|
[1383] | 1325 | template<typename _Graph> |
---|
[1980] | 1326 | class UndirGraphAdaptor : |
---|
[1979] | 1327 | public UGraphAdaptorExtender< |
---|
[1980] | 1328 | UndirGraphAdaptorBase<_Graph> > { |
---|
[1383] | 1329 | public: |
---|
| 1330 | typedef _Graph Graph; |
---|
[1979] | 1331 | typedef UGraphAdaptorExtender< |
---|
[1980] | 1332 | UndirGraphAdaptorBase<_Graph> > Parent; |
---|
[1383] | 1333 | protected: |
---|
[1980] | 1334 | UndirGraphAdaptor() { } |
---|
[1383] | 1335 | public: |
---|
[1980] | 1336 | UndirGraphAdaptor(_Graph& _graph) { |
---|
[1383] | 1337 | setGraph(_graph); |
---|
[556] | 1338 | } |
---|
| 1339 | |
---|
[1991] | 1340 | template <typename _ForwardMap, typename _BackwardMap> |
---|
| 1341 | class CombinedEdgeMap { |
---|
| 1342 | public: |
---|
| 1343 | |
---|
| 1344 | typedef _ForwardMap ForwardMap; |
---|
| 1345 | typedef _BackwardMap BackwardMap; |
---|
[992] | 1346 | |
---|
[1991] | 1347 | typedef typename MapTraits<ForwardMap>::ReferenceMapTag ReferenceMapTag; |
---|
[992] | 1348 | |
---|
[1991] | 1349 | typedef typename ForwardMap::Value Value; |
---|
| 1350 | typedef typename Parent::Edge Key; |
---|
| 1351 | |
---|
| 1352 | CombinedEdgeMap() : forward_map(0), backward_map(0) {} |
---|
[992] | 1353 | |
---|
[1991] | 1354 | CombinedEdgeMap(ForwardMap& _forward_map, BackwardMap& _backward_map) |
---|
| 1355 | : forward_map(&_forward_map), backward_map(&_backward_map) {} |
---|
[992] | 1356 | |
---|
[1991] | 1357 | void set(const Key& e, const Value& a) { |
---|
| 1358 | if (Parent::direction(e)) { |
---|
| 1359 | forward_map->set(e, a); |
---|
| 1360 | } else { |
---|
| 1361 | backward_map->set(e, a); |
---|
| 1362 | } |
---|
[992] | 1363 | } |
---|
| 1364 | |
---|
[1991] | 1365 | typename MapTraits<ForwardMap>::ConstReturnValue |
---|
| 1366 | operator[](const Key& e) const { |
---|
| 1367 | if (Parent::direction(e)) { |
---|
| 1368 | return (*forward_map)[e]; |
---|
| 1369 | } else { |
---|
| 1370 | return (*backward_map)[e]; |
---|
| 1371 | } |
---|
[992] | 1372 | } |
---|
| 1373 | |
---|
[1991] | 1374 | typename MapTraits<ForwardMap>::ReturnValue |
---|
| 1375 | operator[](const Key& e) { |
---|
| 1376 | if (Parent::direction(e)) { |
---|
| 1377 | return (*forward_map)[e]; |
---|
| 1378 | } else { |
---|
| 1379 | return (*backward_map)[e]; |
---|
| 1380 | } |
---|
[992] | 1381 | } |
---|
[1991] | 1382 | |
---|
| 1383 | void setForwardMap(ForwardMap& _forward_map) { |
---|
| 1384 | forward_map = &_forward_map; |
---|
| 1385 | } |
---|
| 1386 | |
---|
| 1387 | void setBackwardMap(BackwardMap& _backward_map) { |
---|
| 1388 | backward_map = &_backward_map; |
---|
| 1389 | } |
---|
| 1390 | |
---|
| 1391 | protected: |
---|
| 1392 | |
---|
| 1393 | ForwardMap* forward_map; |
---|
| 1394 | BackwardMap* backward_map; |
---|
| 1395 | |
---|
[992] | 1396 | }; |
---|
| 1397 | |
---|
| 1398 | }; |
---|
[569] | 1399 | |
---|
[1991] | 1400 | /// \brief Just gives back an undir graph adaptor |
---|
[1951] | 1401 | /// |
---|
[1991] | 1402 | /// Just gives back an undir graph adaptor |
---|
[650] | 1403 | template<typename Graph> |
---|
[1991] | 1404 | UndirGraphAdaptor<const Graph> |
---|
| 1405 | undirGraphAdaptor(const Graph& graph) { |
---|
| 1406 | return UndirGraphAdaptor<const Graph>(graph); |
---|
| 1407 | } |
---|
[650] | 1408 | |
---|
[2034] | 1409 | template<typename Graph, typename Number, |
---|
| 1410 | typename CapacityMap, typename FlowMap, |
---|
| 1411 | typename Tolerance = Tolerance<Number> > |
---|
[658] | 1412 | class ResForwardFilter { |
---|
[650] | 1413 | const CapacityMap* capacity; |
---|
| 1414 | const FlowMap* flow; |
---|
[2034] | 1415 | Tolerance tolerance; |
---|
[650] | 1416 | public: |
---|
[1991] | 1417 | typedef typename Graph::Edge Key; |
---|
| 1418 | typedef bool Value; |
---|
| 1419 | |
---|
[2034] | 1420 | ResForwardFilter(const CapacityMap& _capacity, const FlowMap& _flow, |
---|
| 1421 | const Tolerance& _tolerance = Tolerance()) |
---|
| 1422 | : capacity(&_capacity), flow(&_flow), tolerance(_tolerance) { } |
---|
| 1423 | |
---|
| 1424 | ResForwardFilter(const Tolerance& _tolerance) |
---|
| 1425 | : capacity(0), flow(0), tolerance(_tolerance) { } |
---|
| 1426 | |
---|
[1991] | 1427 | void setCapacity(const CapacityMap& _capacity) { capacity = &_capacity; } |
---|
| 1428 | void setFlow(const FlowMap& _flow) { flow = &_flow; } |
---|
[2034] | 1429 | |
---|
[650] | 1430 | bool operator[](const typename Graph::Edge& e) const { |
---|
[2034] | 1431 | return tolerance.less((*flow)[e], (*capacity)[e]); |
---|
[650] | 1432 | } |
---|
| 1433 | }; |
---|
| 1434 | |
---|
| 1435 | template<typename Graph, typename Number, |
---|
[2034] | 1436 | typename CapacityMap, typename FlowMap, |
---|
| 1437 | typename Tolerance = Tolerance<Number> > |
---|
[658] | 1438 | class ResBackwardFilter { |
---|
[650] | 1439 | const CapacityMap* capacity; |
---|
| 1440 | const FlowMap* flow; |
---|
[2034] | 1441 | Tolerance tolerance; |
---|
[650] | 1442 | public: |
---|
[1991] | 1443 | typedef typename Graph::Edge Key; |
---|
| 1444 | typedef bool Value; |
---|
| 1445 | |
---|
[2034] | 1446 | ResBackwardFilter(const CapacityMap& _capacity, const FlowMap& _flow, |
---|
| 1447 | const Tolerance& _tolerance = Tolerance()) |
---|
| 1448 | : capacity(&_capacity), flow(&_flow), tolerance(_tolerance) { } |
---|
| 1449 | ResBackwardFilter(const Tolerance& _tolerance = Tolerance()) |
---|
| 1450 | : capacity(0), flow(0), tolerance(_tolerance) { } |
---|
[1991] | 1451 | void setCapacity(const CapacityMap& _capacity) { capacity = &_capacity; } |
---|
| 1452 | void setFlow(const FlowMap& _flow) { flow = &_flow; } |
---|
[650] | 1453 | bool operator[](const typename Graph::Edge& e) const { |
---|
[2034] | 1454 | return tolerance.less(0, Number((*flow)[e])); |
---|
[650] | 1455 | } |
---|
| 1456 | }; |
---|
| 1457 | |
---|
[653] | 1458 | |
---|
[1951] | 1459 | ///\brief An adaptor for composing the residual |
---|
| 1460 | ///graph for directed flow and circulation problems. |
---|
[2037] | 1461 | /// |
---|
[1951] | 1462 | ///\ingroup graph_adaptors |
---|
| 1463 | /// |
---|
[2042] | 1464 | ///An adaptor for composing the residual graph for directed flow and |
---|
| 1465 | ///circulation problems. Let \f$ G=(V, A) \f$ be a directed graph |
---|
| 1466 | ///and let \f$ F \f$ be a number type. Let moreover \f$ f,c:A\to F \f$, |
---|
| 1467 | ///be functions on the edge-set. |
---|
| 1468 | /// |
---|
| 1469 | ///In the appications of ResGraphAdaptor, \f$ f \f$ usually stands |
---|
| 1470 | ///for a flow and \f$ c \f$ for a capacity function. Suppose that a |
---|
| 1471 | ///graph instange \c g of type \c ListGraph implements \f$ G \f$. |
---|
| 1472 | /// |
---|
| 1473 | ///\code |
---|
| 1474 | /// ListGraph g; |
---|
| 1475 | ///\endcode |
---|
| 1476 | /// |
---|
| 1477 | ///Then RevGraphAdaptor implements the graph structure with node-set |
---|
| 1478 | /// \f$ V \f$ and edge-set \f$ A_{forward}\cup A_{backward} \f$, |
---|
| 1479 | ///where \f$ A_{forward}=\{uv : uv\in A, f(uv)<c(uv)\} \f$ and |
---|
| 1480 | /// \f$ A_{backward}=\{vu : uv\in A, f(uv)>0\} \f$, i.e. the so called |
---|
| 1481 | ///residual graph. When we take the union |
---|
| 1482 | /// \f$ A_{forward}\cup A_{backward} \f$, multilicities are counted, i.e. |
---|
| 1483 | ///if an edge is in both \f$ A_{forward} \f$ and \f$ A_{backward} \f$, |
---|
| 1484 | ///then in the adaptor it appears twice. The following code shows how |
---|
| 1485 | ///such an instance can be constructed. |
---|
| 1486 | /// |
---|
| 1487 | ///\code |
---|
| 1488 | /// typedef ListGraph Graph; |
---|
| 1489 | /// Graph::EdgeMap<int> f(g); |
---|
| 1490 | /// Graph::EdgeMap<int> c(g); |
---|
| 1491 | /// ResGraphAdaptor<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> > ga(g); |
---|
| 1492 | ///\endcode |
---|
| 1493 | ///\author Marton Makai |
---|
| 1494 | /// |
---|
[650] | 1495 | template<typename Graph, typename Number, |
---|
[2034] | 1496 | typename CapacityMap, typename FlowMap, |
---|
| 1497 | typename Tolerance = Tolerance<Number> > |
---|
[1401] | 1498 | class ResGraphAdaptor : |
---|
[1991] | 1499 | public EdgeSubGraphAdaptor< |
---|
[2034] | 1500 | UndirGraphAdaptor<const Graph>, |
---|
| 1501 | typename UndirGraphAdaptor<const Graph>::template CombinedEdgeMap< |
---|
| 1502 | ResForwardFilter<const Graph, Number, CapacityMap, FlowMap>, |
---|
| 1503 | ResBackwardFilter<const Graph, Number, CapacityMap, FlowMap> > > { |
---|
[650] | 1504 | public: |
---|
[1991] | 1505 | |
---|
[2034] | 1506 | typedef UndirGraphAdaptor<const Graph> UGraph; |
---|
[1991] | 1507 | |
---|
[2034] | 1508 | typedef ResForwardFilter<const Graph, Number, CapacityMap, FlowMap> |
---|
[1991] | 1509 | ForwardFilter; |
---|
| 1510 | |
---|
[2034] | 1511 | typedef ResBackwardFilter<const Graph, Number, CapacityMap, FlowMap> |
---|
[1991] | 1512 | BackwardFilter; |
---|
| 1513 | |
---|
| 1514 | typedef typename UGraph:: |
---|
| 1515 | template CombinedEdgeMap<ForwardFilter, BackwardFilter> |
---|
| 1516 | EdgeFilter; |
---|
| 1517 | |
---|
| 1518 | typedef EdgeSubGraphAdaptor<UGraph, EdgeFilter> Parent; |
---|
| 1519 | |
---|
[650] | 1520 | protected: |
---|
[1991] | 1521 | |
---|
[650] | 1522 | const CapacityMap* capacity; |
---|
| 1523 | FlowMap* flow; |
---|
[1991] | 1524 | |
---|
| 1525 | UGraph ugraph; |
---|
| 1526 | ForwardFilter forward_filter; |
---|
| 1527 | BackwardFilter backward_filter; |
---|
| 1528 | EdgeFilter edge_filter; |
---|
| 1529 | |
---|
[658] | 1530 | void setCapacityMap(const CapacityMap& _capacity) { |
---|
| 1531 | capacity=&_capacity; |
---|
| 1532 | forward_filter.setCapacity(_capacity); |
---|
| 1533 | backward_filter.setCapacity(_capacity); |
---|
| 1534 | } |
---|
[1991] | 1535 | |
---|
[658] | 1536 | void setFlowMap(FlowMap& _flow) { |
---|
| 1537 | flow=&_flow; |
---|
| 1538 | forward_filter.setFlow(_flow); |
---|
| 1539 | backward_filter.setFlow(_flow); |
---|
| 1540 | } |
---|
[1991] | 1541 | |
---|
[650] | 1542 | public: |
---|
[1991] | 1543 | |
---|
[2034] | 1544 | /// \brief Constructor of the residual graph. |
---|
| 1545 | /// |
---|
| 1546 | /// Constructor of the residual graph. The parameters are the graph type, |
---|
| 1547 | /// the flow map, the capacity map and a tolerance object. |
---|
| 1548 | ResGraphAdaptor(const Graph& _graph, const CapacityMap& _capacity, |
---|
| 1549 | FlowMap& _flow, const Tolerance& _tolerance = Tolerance()) |
---|
| 1550 | : Parent(), capacity(&_capacity), flow(&_flow), ugraph(_graph), |
---|
| 1551 | forward_filter(_capacity, _flow, _tolerance), |
---|
| 1552 | backward_filter(_capacity, _flow, _tolerance), |
---|
| 1553 | edge_filter(forward_filter, backward_filter) |
---|
| 1554 | { |
---|
[1991] | 1555 | Parent::setGraph(ugraph); |
---|
| 1556 | Parent::setEdgeFilterMap(edge_filter); |
---|
[650] | 1557 | } |
---|
| 1558 | |
---|
[660] | 1559 | typedef typename Parent::Edge Edge; |
---|
| 1560 | |
---|
[2034] | 1561 | /// \brief Gives back the residual capacity of the edge. |
---|
| 1562 | /// |
---|
| 1563 | /// Gives back the residual capacity of the edge. |
---|
| 1564 | Number rescap(const Edge& edge) const { |
---|
| 1565 | if (UGraph::direction(edge)) { |
---|
| 1566 | return (*capacity)[edge]-(*flow)[edge]; |
---|
| 1567 | } else { |
---|
| 1568 | return (*flow)[edge]; |
---|
| 1569 | } |
---|
| 1570 | } |
---|
| 1571 | |
---|
| 1572 | /// \brief Augment on the given edge in the residual graph. |
---|
| 1573 | /// |
---|
| 1574 | /// Augment on the given edge in the residual graph. It increase |
---|
| 1575 | /// or decrease the flow on the original edge depend on the direction |
---|
| 1576 | /// of the residual edge. |
---|
[660] | 1577 | void augment(const Edge& e, Number a) const { |
---|
[1991] | 1578 | if (UGraph::direction(e)) { |
---|
[2034] | 1579 | flow->set(e, (*flow)[e] + a); |
---|
[1991] | 1580 | } else { |
---|
[2034] | 1581 | flow->set(e, (*flow)[e] - a); |
---|
[1991] | 1582 | } |
---|
[650] | 1583 | } |
---|
| 1584 | |
---|
[2034] | 1585 | /// \brief Returns the direction of the edge. |
---|
| 1586 | /// |
---|
| 1587 | /// Returns true when the edge is same oriented as the original edge. |
---|
[1991] | 1588 | static bool forward(const Edge& e) { |
---|
| 1589 | return UGraph::direction(e); |
---|
| 1590 | } |
---|
| 1591 | |
---|
[2034] | 1592 | /// \brief Returns the direction of the edge. |
---|
| 1593 | /// |
---|
| 1594 | /// Returns true when the edge is opposite oriented as the original edge. |
---|
[1991] | 1595 | static bool backward(const Edge& e) { |
---|
| 1596 | return !UGraph::direction(e); |
---|
| 1597 | } |
---|
| 1598 | |
---|
[2034] | 1599 | /// \brief Gives back the forward oriented residual edge. |
---|
| 1600 | /// |
---|
| 1601 | /// Gives back the forward oriented residual edge. |
---|
[1991] | 1602 | static Edge forward(const typename Graph::Edge& e) { |
---|
| 1603 | return UGraph::direct(e, true); |
---|
| 1604 | } |
---|
| 1605 | |
---|
[2034] | 1606 | /// \brief Gives back the backward oriented residual edge. |
---|
| 1607 | /// |
---|
| 1608 | /// Gives back the backward oriented residual edge. |
---|
[1991] | 1609 | static Edge backward(const typename Graph::Edge& e) { |
---|
| 1610 | return UGraph::direct(e, false); |
---|
| 1611 | } |
---|
| 1612 | |
---|
[1951] | 1613 | /// \brief Residual capacity map. |
---|
| 1614 | /// |
---|
| 1615 | /// In generic residual graphs the residual capacity can be obtained |
---|
| 1616 | /// as a map. |
---|
[660] | 1617 | class ResCap { |
---|
| 1618 | protected: |
---|
[1991] | 1619 | const ResGraphAdaptor* res_graph; |
---|
[660] | 1620 | public: |
---|
[987] | 1621 | typedef Number Value; |
---|
| 1622 | typedef Edge Key; |
---|
[1991] | 1623 | ResCap(const ResGraphAdaptor& _res_graph) |
---|
| 1624 | : res_graph(&_res_graph) {} |
---|
| 1625 | |
---|
[2034] | 1626 | Number operator[](const Edge& e) const { |
---|
| 1627 | return res_graph->rescap(e); |
---|
[660] | 1628 | } |
---|
[1991] | 1629 | |
---|
[660] | 1630 | }; |
---|
| 1631 | |
---|
[650] | 1632 | }; |
---|
| 1633 | |
---|
| 1634 | |
---|
[998] | 1635 | |
---|
| 1636 | template <typename _Graph, typename FirstOutEdgesMap> |
---|
[1401] | 1637 | class ErasingFirstGraphAdaptorBase : public GraphAdaptorBase<_Graph> { |
---|
[998] | 1638 | public: |
---|
| 1639 | typedef _Graph Graph; |
---|
[1401] | 1640 | typedef GraphAdaptorBase<_Graph> Parent; |
---|
[998] | 1641 | protected: |
---|
| 1642 | FirstOutEdgesMap* first_out_edges; |
---|
[1401] | 1643 | ErasingFirstGraphAdaptorBase() : Parent(), |
---|
[998] | 1644 | first_out_edges(0) { } |
---|
| 1645 | |
---|
| 1646 | void setFirstOutEdgesMap(FirstOutEdgesMap& _first_out_edges) { |
---|
| 1647 | first_out_edges=&_first_out_edges; |
---|
| 1648 | } |
---|
| 1649 | |
---|
| 1650 | public: |
---|
| 1651 | |
---|
| 1652 | typedef typename Parent::Node Node; |
---|
| 1653 | typedef typename Parent::Edge Edge; |
---|
| 1654 | |
---|
| 1655 | void firstOut(Edge& i, const Node& n) const { |
---|
| 1656 | i=(*first_out_edges)[n]; |
---|
| 1657 | } |
---|
| 1658 | |
---|
| 1659 | void erase(const Edge& e) const { |
---|
| 1660 | Node n=source(e); |
---|
| 1661 | Edge f=e; |
---|
| 1662 | Parent::nextOut(f); |
---|
| 1663 | first_out_edges->set(n, f); |
---|
| 1664 | } |
---|
| 1665 | }; |
---|
| 1666 | |
---|
| 1667 | |
---|
[1951] | 1668 | ///\brief For blocking flows. |
---|
| 1669 | ///\ingroup graph_adaptors |
---|
| 1670 | /// |
---|
| 1671 | ///This graph adaptor is used for on-the-fly |
---|
| 1672 | ///Dinits blocking flow computations. |
---|
| 1673 | ///For each node, an out-edge is stored which is used when the |
---|
| 1674 | ///\code |
---|
| 1675 | ///OutEdgeIt& first(OutEdgeIt&, const Node&) |
---|
| 1676 | ///\endcode |
---|
| 1677 | ///is called. |
---|
| 1678 | /// |
---|
| 1679 | ///\author Marton Makai |
---|
| 1680 | /// |
---|
[998] | 1681 | template <typename _Graph, typename FirstOutEdgesMap> |
---|
[1401] | 1682 | class ErasingFirstGraphAdaptor : |
---|
[1979] | 1683 | public GraphAdaptorExtender< |
---|
[1401] | 1684 | ErasingFirstGraphAdaptorBase<_Graph, FirstOutEdgesMap> > { |
---|
[650] | 1685 | public: |
---|
[998] | 1686 | typedef _Graph Graph; |
---|
[1979] | 1687 | typedef GraphAdaptorExtender< |
---|
[1401] | 1688 | ErasingFirstGraphAdaptorBase<_Graph, FirstOutEdgesMap> > Parent; |
---|
| 1689 | ErasingFirstGraphAdaptor(Graph& _graph, |
---|
[998] | 1690 | FirstOutEdgesMap& _first_out_edges) { |
---|
| 1691 | setGraph(_graph); |
---|
| 1692 | setFirstOutEdgesMap(_first_out_edges); |
---|
| 1693 | } |
---|
[1019] | 1694 | |
---|
[998] | 1695 | }; |
---|
[556] | 1696 | |
---|
[1989] | 1697 | // template <typename _Graph> |
---|
| 1698 | // class SplitGraphAdaptorBase |
---|
| 1699 | // : public GraphAdaptorBase<_Graph> { |
---|
| 1700 | // public: |
---|
| 1701 | // typedef GraphAdaptorBase<_Graph> Parent; |
---|
[1697] | 1702 | |
---|
[1989] | 1703 | // class Node; |
---|
| 1704 | // class Edge; |
---|
| 1705 | // template <typename T> class NodeMap; |
---|
| 1706 | // template <typename T> class EdgeMap; |
---|
[1697] | 1707 | |
---|
| 1708 | |
---|
[1989] | 1709 | // class Node : public Parent::Node { |
---|
| 1710 | // friend class SplitGraphAdaptorBase; |
---|
| 1711 | // template <typename T> friend class NodeMap; |
---|
| 1712 | // typedef typename Parent::Node NodeParent; |
---|
| 1713 | // private: |
---|
[1697] | 1714 | |
---|
[1989] | 1715 | // bool entry; |
---|
| 1716 | // Node(typename Parent::Node _node, bool _entry) |
---|
| 1717 | // : Parent::Node(_node), entry(_entry) {} |
---|
[1697] | 1718 | |
---|
[1989] | 1719 | // public: |
---|
| 1720 | // Node() {} |
---|
| 1721 | // Node(Invalid) : NodeParent(INVALID), entry(true) {} |
---|
[1697] | 1722 | |
---|
[1989] | 1723 | // bool operator==(const Node& node) const { |
---|
| 1724 | // return NodeParent::operator==(node) && entry == node.entry; |
---|
| 1725 | // } |
---|
[1697] | 1726 | |
---|
[1989] | 1727 | // bool operator!=(const Node& node) const { |
---|
| 1728 | // return !(*this == node); |
---|
| 1729 | // } |
---|
[1697] | 1730 | |
---|
[1989] | 1731 | // bool operator<(const Node& node) const { |
---|
| 1732 | // return NodeParent::operator<(node) || |
---|
| 1733 | // (NodeParent::operator==(node) && entry < node.entry); |
---|
| 1734 | // } |
---|
| 1735 | // }; |
---|
[1697] | 1736 | |
---|
[1989] | 1737 | // /// \todo May we want VARIANT/union type |
---|
| 1738 | // class Edge : public Parent::Edge { |
---|
| 1739 | // friend class SplitGraphAdaptorBase; |
---|
| 1740 | // template <typename T> friend class EdgeMap; |
---|
| 1741 | // private: |
---|
| 1742 | // typedef typename Parent::Edge EdgeParent; |
---|
| 1743 | // typedef typename Parent::Node NodeParent; |
---|
| 1744 | // NodeParent bind; |
---|
[1697] | 1745 | |
---|
[1989] | 1746 | // Edge(const EdgeParent& edge, const NodeParent& node) |
---|
| 1747 | // : EdgeParent(edge), bind(node) {} |
---|
| 1748 | // public: |
---|
| 1749 | // Edge() {} |
---|
| 1750 | // Edge(Invalid) : EdgeParent(INVALID), bind(INVALID) {} |
---|
[1697] | 1751 | |
---|
[1989] | 1752 | // bool operator==(const Edge& edge) const { |
---|
| 1753 | // return EdgeParent::operator==(edge) && bind == edge.bind; |
---|
| 1754 | // } |
---|
[1697] | 1755 | |
---|
[1989] | 1756 | // bool operator!=(const Edge& edge) const { |
---|
| 1757 | // return !(*this == edge); |
---|
| 1758 | // } |
---|
[1697] | 1759 | |
---|
[1989] | 1760 | // bool operator<(const Edge& edge) const { |
---|
| 1761 | // return EdgeParent::operator<(edge) || |
---|
| 1762 | // (EdgeParent::operator==(edge) && bind < edge.bind); |
---|
| 1763 | // } |
---|
| 1764 | // }; |
---|
[1697] | 1765 | |
---|
[1989] | 1766 | // void first(Node& node) const { |
---|
| 1767 | // Parent::first(node); |
---|
| 1768 | // node.entry = true; |
---|
| 1769 | // } |
---|
[1697] | 1770 | |
---|
[1989] | 1771 | // void next(Node& node) const { |
---|
| 1772 | // if (node.entry) { |
---|
| 1773 | // node.entry = false; |
---|
| 1774 | // } else { |
---|
| 1775 | // node.entry = true; |
---|
| 1776 | // Parent::next(node); |
---|
| 1777 | // } |
---|
| 1778 | // } |
---|
[1697] | 1779 | |
---|
[1989] | 1780 | // void first(Edge& edge) const { |
---|
| 1781 | // Parent::first(edge); |
---|
| 1782 | // if ((typename Parent::Edge&)edge == INVALID) { |
---|
| 1783 | // Parent::first(edge.bind); |
---|
| 1784 | // } else { |
---|
| 1785 | // edge.bind = INVALID; |
---|
| 1786 | // } |
---|
| 1787 | // } |
---|
[1697] | 1788 | |
---|
[1989] | 1789 | // void next(Edge& edge) const { |
---|
| 1790 | // if ((typename Parent::Edge&)edge != INVALID) { |
---|
| 1791 | // Parent::next(edge); |
---|
| 1792 | // if ((typename Parent::Edge&)edge == INVALID) { |
---|
| 1793 | // Parent::first(edge.bind); |
---|
| 1794 | // } |
---|
| 1795 | // } else { |
---|
| 1796 | // Parent::next(edge.bind); |
---|
| 1797 | // } |
---|
| 1798 | // } |
---|
[1697] | 1799 | |
---|
[1989] | 1800 | // void firstIn(Edge& edge, const Node& node) const { |
---|
| 1801 | // if (node.entry) { |
---|
| 1802 | // Parent::firstIn(edge, node); |
---|
| 1803 | // edge.bind = INVALID; |
---|
| 1804 | // } else { |
---|
| 1805 | // (typename Parent::Edge&)edge = INVALID; |
---|
| 1806 | // edge.bind = node; |
---|
| 1807 | // } |
---|
| 1808 | // } |
---|
[1697] | 1809 | |
---|
[1989] | 1810 | // void nextIn(Edge& edge) const { |
---|
| 1811 | // if ((typename Parent::Edge&)edge != INVALID) { |
---|
| 1812 | // Parent::nextIn(edge); |
---|
| 1813 | // } else { |
---|
| 1814 | // edge.bind = INVALID; |
---|
| 1815 | // } |
---|
| 1816 | // } |
---|
[1697] | 1817 | |
---|
[1989] | 1818 | // void firstOut(Edge& edge, const Node& node) const { |
---|
| 1819 | // if (!node.entry) { |
---|
| 1820 | // Parent::firstOut(edge, node); |
---|
| 1821 | // edge.bind = INVALID; |
---|
| 1822 | // } else { |
---|
| 1823 | // (typename Parent::Edge&)edge = INVALID; |
---|
| 1824 | // edge.bind = node; |
---|
| 1825 | // } |
---|
| 1826 | // } |
---|
[1697] | 1827 | |
---|
[1989] | 1828 | // void nextOut(Edge& edge) const { |
---|
| 1829 | // if ((typename Parent::Edge&)edge != INVALID) { |
---|
| 1830 | // Parent::nextOut(edge); |
---|
| 1831 | // } else { |
---|
| 1832 | // edge.bind = INVALID; |
---|
| 1833 | // } |
---|
| 1834 | // } |
---|
[1697] | 1835 | |
---|
[1989] | 1836 | // Node source(const Edge& edge) const { |
---|
| 1837 | // if ((typename Parent::Edge&)edge != INVALID) { |
---|
| 1838 | // return Node(Parent::source(edge), false); |
---|
| 1839 | // } else { |
---|
| 1840 | // return Node(edge.bind, true); |
---|
| 1841 | // } |
---|
| 1842 | // } |
---|
[1697] | 1843 | |
---|
[1989] | 1844 | // Node target(const Edge& edge) const { |
---|
| 1845 | // if ((typename Parent::Edge&)edge != INVALID) { |
---|
| 1846 | // return Node(Parent::target(edge), true); |
---|
| 1847 | // } else { |
---|
| 1848 | // return Node(edge.bind, false); |
---|
| 1849 | // } |
---|
| 1850 | // } |
---|
[1697] | 1851 | |
---|
[1989] | 1852 | // static bool entryNode(const Node& node) { |
---|
| 1853 | // return node.entry; |
---|
| 1854 | // } |
---|
[1697] | 1855 | |
---|
[1989] | 1856 | // static bool exitNode(const Node& node) { |
---|
| 1857 | // return !node.entry; |
---|
| 1858 | // } |
---|
[1697] | 1859 | |
---|
[1989] | 1860 | // static Node getEntry(const typename Parent::Node& node) { |
---|
| 1861 | // return Node(node, true); |
---|
| 1862 | // } |
---|
[1697] | 1863 | |
---|
[1989] | 1864 | // static Node getExit(const typename Parent::Node& node) { |
---|
| 1865 | // return Node(node, false); |
---|
| 1866 | // } |
---|
[1697] | 1867 | |
---|
[1989] | 1868 | // static bool originalEdge(const Edge& edge) { |
---|
| 1869 | // return (typename Parent::Edge&)edge != INVALID; |
---|
| 1870 | // } |
---|
[1697] | 1871 | |
---|
[1989] | 1872 | // static bool bindingEdge(const Edge& edge) { |
---|
| 1873 | // return edge.bind != INVALID; |
---|
| 1874 | // } |
---|
[1697] | 1875 | |
---|
[1989] | 1876 | // static Node getBindedNode(const Edge& edge) { |
---|
| 1877 | // return edge.bind; |
---|
| 1878 | // } |
---|
[1697] | 1879 | |
---|
[1989] | 1880 | // int nodeNum() const { |
---|
| 1881 | // return Parent::nodeNum() * 2; |
---|
| 1882 | // } |
---|
[1697] | 1883 | |
---|
[1989] | 1884 | // typedef True EdgeNumTag; |
---|
[1697] | 1885 | |
---|
[1989] | 1886 | // int edgeNum() const { |
---|
| 1887 | // return countEdges() + Parent::nodeNum(); |
---|
| 1888 | // } |
---|
[1697] | 1889 | |
---|
[1989] | 1890 | // Edge findEdge(const Node& source, const Node& target, |
---|
| 1891 | // const Edge& prev = INVALID) const { |
---|
| 1892 | // if (exitNode(source) && entryNode(target)) { |
---|
| 1893 | // return Parent::findEdge(source, target, prev); |
---|
| 1894 | // } else { |
---|
| 1895 | // if (prev == INVALID && entryNode(source) && exitNode(target) && |
---|
| 1896 | // (typename Parent::Node&)source == (typename Parent::Node&)target) { |
---|
| 1897 | // return Edge(INVALID, source); |
---|
| 1898 | // } else { |
---|
| 1899 | // return INVALID; |
---|
| 1900 | // } |
---|
| 1901 | // } |
---|
| 1902 | // } |
---|
[1697] | 1903 | |
---|
[1989] | 1904 | // template <typename T> |
---|
| 1905 | // class NodeMap : public MapBase<Node, T> { |
---|
| 1906 | // typedef typename Parent::template NodeMap<T> NodeImpl; |
---|
| 1907 | // public: |
---|
| 1908 | // NodeMap(const SplitGraphAdaptorBase& _graph) |
---|
| 1909 | // : entry(_graph), exit(_graph) {} |
---|
| 1910 | // NodeMap(const SplitGraphAdaptorBase& _graph, const T& t) |
---|
| 1911 | // : entry(_graph, t), exit(_graph, t) {} |
---|
[1697] | 1912 | |
---|
[1989] | 1913 | // void set(const Node& key, const T& val) { |
---|
| 1914 | // if (key.entry) { entry.set(key, val); } |
---|
| 1915 | // else {exit.set(key, val); } |
---|
| 1916 | // } |
---|
[1697] | 1917 | |
---|
[1989] | 1918 | // typename MapTraits<NodeImpl>::ReturnValue |
---|
| 1919 | // operator[](const Node& key) { |
---|
| 1920 | // if (key.entry) { return entry[key]; } |
---|
| 1921 | // else { return exit[key]; } |
---|
| 1922 | // } |
---|
[1697] | 1923 | |
---|
[1989] | 1924 | // typename MapTraits<NodeImpl>::ConstReturnValue |
---|
| 1925 | // operator[](const Node& key) const { |
---|
| 1926 | // if (key.entry) { return entry[key]; } |
---|
| 1927 | // else { return exit[key]; } |
---|
| 1928 | // } |
---|
[1697] | 1929 | |
---|
[1989] | 1930 | // private: |
---|
| 1931 | // NodeImpl entry, exit; |
---|
| 1932 | // }; |
---|
[1697] | 1933 | |
---|
[1989] | 1934 | // template <typename T> |
---|
| 1935 | // class EdgeMap : public MapBase<Edge, T> { |
---|
| 1936 | // typedef typename Parent::template NodeMap<T> NodeImpl; |
---|
| 1937 | // typedef typename Parent::template EdgeMap<T> EdgeImpl; |
---|
| 1938 | // public: |
---|
| 1939 | // EdgeMap(const SplitGraphAdaptorBase& _graph) |
---|
| 1940 | // : bind(_graph), orig(_graph) {} |
---|
| 1941 | // EdgeMap(const SplitGraphAdaptorBase& _graph, const T& t) |
---|
| 1942 | // : bind(_graph, t), orig(_graph, t) {} |
---|
[1697] | 1943 | |
---|
[1989] | 1944 | // void set(const Edge& key, const T& val) { |
---|
| 1945 | // if ((typename Parent::Edge&)key != INVALID) { orig.set(key, val); } |
---|
| 1946 | // else {bind.set(key.bind, val); } |
---|
| 1947 | // } |
---|
[1697] | 1948 | |
---|
[1989] | 1949 | // typename MapTraits<EdgeImpl>::ReturnValue |
---|
| 1950 | // operator[](const Edge& key) { |
---|
| 1951 | // if ((typename Parent::Edge&)key != INVALID) { return orig[key]; } |
---|
| 1952 | // else {return bind[key.bind]; } |
---|
| 1953 | // } |
---|
[1697] | 1954 | |
---|
[1989] | 1955 | // typename MapTraits<EdgeImpl>::ConstReturnValue |
---|
| 1956 | // operator[](const Edge& key) const { |
---|
| 1957 | // if ((typename Parent::Edge&)key != INVALID) { return orig[key]; } |
---|
| 1958 | // else {return bind[key.bind]; } |
---|
| 1959 | // } |
---|
[1697] | 1960 | |
---|
[1989] | 1961 | // private: |
---|
| 1962 | // typename Parent::template NodeMap<T> bind; |
---|
| 1963 | // typename Parent::template EdgeMap<T> orig; |
---|
| 1964 | // }; |
---|
[1697] | 1965 | |
---|
[1989] | 1966 | // template <typename EntryMap, typename ExitMap> |
---|
| 1967 | // class CombinedNodeMap : public MapBase<Node, typename EntryMap::Value> { |
---|
| 1968 | // public: |
---|
| 1969 | // typedef MapBase<Node, typename EntryMap::Value> Parent; |
---|
[1697] | 1970 | |
---|
[1989] | 1971 | // typedef typename Parent::Key Key; |
---|
| 1972 | // typedef typename Parent::Value Value; |
---|
[1697] | 1973 | |
---|
[1989] | 1974 | // CombinedNodeMap(EntryMap& _entryMap, ExitMap& _exitMap) |
---|
| 1975 | // : entryMap(_entryMap), exitMap(_exitMap) {} |
---|
[1697] | 1976 | |
---|
[1989] | 1977 | // Value& operator[](const Key& key) { |
---|
| 1978 | // if (key.entry) { |
---|
| 1979 | // return entryMap[key]; |
---|
| 1980 | // } else { |
---|
| 1981 | // return exitMap[key]; |
---|
| 1982 | // } |
---|
| 1983 | // } |
---|
[1697] | 1984 | |
---|
[1989] | 1985 | // Value operator[](const Key& key) const { |
---|
| 1986 | // if (key.entry) { |
---|
| 1987 | // return entryMap[key]; |
---|
| 1988 | // } else { |
---|
| 1989 | // return exitMap[key]; |
---|
| 1990 | // } |
---|
| 1991 | // } |
---|
[1697] | 1992 | |
---|
[1989] | 1993 | // void set(const Key& key, const Value& value) { |
---|
| 1994 | // if (key.entry) { |
---|
| 1995 | // entryMap.set(key, value); |
---|
| 1996 | // } else { |
---|
| 1997 | // exitMap.set(key, value); |
---|
| 1998 | // } |
---|
| 1999 | // } |
---|
[1697] | 2000 | |
---|
[1989] | 2001 | // private: |
---|
[1697] | 2002 | |
---|
[1989] | 2003 | // EntryMap& entryMap; |
---|
| 2004 | // ExitMap& exitMap; |
---|
[1697] | 2005 | |
---|
[1989] | 2006 | // }; |
---|
[1697] | 2007 | |
---|
[1989] | 2008 | // template <typename EdgeMap, typename NodeMap> |
---|
| 2009 | // class CombinedEdgeMap : public MapBase<Edge, typename EdgeMap::Value> { |
---|
| 2010 | // public: |
---|
| 2011 | // typedef MapBase<Edge, typename EdgeMap::Value> Parent; |
---|
[1697] | 2012 | |
---|
[1989] | 2013 | // typedef typename Parent::Key Key; |
---|
| 2014 | // typedef typename Parent::Value Value; |
---|
[1697] | 2015 | |
---|
[1989] | 2016 | // CombinedEdgeMap(EdgeMap& _edgeMap, NodeMap& _nodeMap) |
---|
| 2017 | // : edgeMap(_edgeMap), nodeMap(_nodeMap) {} |
---|
[1697] | 2018 | |
---|
[1989] | 2019 | // void set(const Edge& edge, const Value& val) { |
---|
| 2020 | // if (SplitGraphAdaptorBase::originalEdge(edge)) { |
---|
| 2021 | // edgeMap.set(edge, val); |
---|
| 2022 | // } else { |
---|
| 2023 | // nodeMap.set(SplitGraphAdaptorBase::bindedNode(edge), val); |
---|
| 2024 | // } |
---|
| 2025 | // } |
---|
[1697] | 2026 | |
---|
[1989] | 2027 | // Value operator[](const Key& edge) const { |
---|
| 2028 | // if (SplitGraphAdaptorBase::originalEdge(edge)) { |
---|
| 2029 | // return edgeMap[edge]; |
---|
| 2030 | // } else { |
---|
| 2031 | // return nodeMap[SplitGraphAdaptorBase::bindedNode(edge)]; |
---|
| 2032 | // } |
---|
| 2033 | // } |
---|
[1697] | 2034 | |
---|
[1989] | 2035 | // Value& operator[](const Key& edge) { |
---|
| 2036 | // if (SplitGraphAdaptorBase::originalEdge(edge)) { |
---|
| 2037 | // return edgeMap[edge]; |
---|
| 2038 | // } else { |
---|
| 2039 | // return nodeMap[SplitGraphAdaptorBase::bindedNode(edge)]; |
---|
| 2040 | // } |
---|
| 2041 | // } |
---|
[1697] | 2042 | |
---|
[1989] | 2043 | // private: |
---|
| 2044 | // EdgeMap& edgeMap; |
---|
| 2045 | // NodeMap& nodeMap; |
---|
| 2046 | // }; |
---|
[1697] | 2047 | |
---|
[1989] | 2048 | // }; |
---|
[1697] | 2049 | |
---|
[1989] | 2050 | // template <typename _Graph> |
---|
| 2051 | // class SplitGraphAdaptor |
---|
| 2052 | // : public GraphAdaptorExtender<SplitGraphAdaptorBase<_Graph> > { |
---|
| 2053 | // public: |
---|
| 2054 | // typedef GraphAdaptorExtender<SplitGraphAdaptorBase<_Graph> > Parent; |
---|
[1697] | 2055 | |
---|
[1989] | 2056 | // SplitGraphAdaptor(_Graph& graph) { |
---|
| 2057 | // Parent::setGraph(graph); |
---|
| 2058 | // } |
---|
[1697] | 2059 | |
---|
| 2060 | |
---|
[1989] | 2061 | // }; |
---|
[1697] | 2062 | |
---|
[921] | 2063 | } //namespace lemon |
---|
[556] | 2064 | |
---|
[1401] | 2065 | #endif //LEMON_GRAPH_ADAPTOR_H |
---|
[556] | 2066 | |
---|