1 | /* -*- mode: C++; indent-tabs-mode: nil; -*- |
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2 | * |
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3 | * This file is a part of LEMON, a generic C++ optimization library. |
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4 | * |
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5 | * Copyright (C) 2003-2011 |
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6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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8 | * |
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9 | * Permission to use, modify and distribute this software is granted |
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10 | * provided that this copyright notice appears in all copies. For |
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11 | * precise terms see the accompanying LICENSE file. |
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12 | * |
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13 | * This software is provided "AS IS" with no warranty of any kind, |
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14 | * express or implied, and with no claim as to its suitability for any |
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15 | * purpose. |
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16 | * |
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17 | */ |
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18 | |
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19 | #ifndef LEMON_ADAPTORS_H |
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20 | #define LEMON_ADAPTORS_H |
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21 | |
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22 | /// \ingroup graph_adaptors |
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23 | /// \file |
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24 | /// \brief Adaptor classes for digraphs and graphs |
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25 | /// |
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26 | /// This file contains several useful adaptors for digraphs and graphs. |
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27 | |
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28 | #include <lemon/core.h> |
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29 | #include <lemon/maps.h> |
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30 | #include <lemon/bits/variant.h> |
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31 | |
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32 | #include <lemon/bits/graph_adaptor_extender.h> |
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33 | #include <lemon/bits/map_extender.h> |
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34 | #include <lemon/tolerance.h> |
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35 | |
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36 | #include <algorithm> |
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37 | |
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38 | namespace lemon { |
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39 | |
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40 | #ifdef _MSC_VER |
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41 | #define LEMON_SCOPE_FIX(OUTER, NESTED) OUTER::NESTED |
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42 | #else |
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43 | #define LEMON_SCOPE_FIX(OUTER, NESTED) typename OUTER::template NESTED |
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44 | #endif |
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45 | |
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46 | template<typename DGR> |
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47 | class DigraphAdaptorBase { |
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48 | public: |
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49 | typedef DGR Digraph; |
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50 | typedef DigraphAdaptorBase Adaptor; |
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51 | |
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52 | protected: |
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53 | DGR* _digraph; |
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54 | DigraphAdaptorBase() : _digraph(0) { } |
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55 | void initialize(DGR& digraph) { _digraph = &digraph; } |
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56 | |
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57 | public: |
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58 | DigraphAdaptorBase(DGR& digraph) : _digraph(&digraph) { } |
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59 | |
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60 | typedef typename DGR::Node Node; |
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61 | typedef typename DGR::Arc Arc; |
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62 | |
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63 | void first(Node& i) const { _digraph->first(i); } |
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64 | void first(Arc& i) const { _digraph->first(i); } |
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65 | void firstIn(Arc& i, const Node& n) const { _digraph->firstIn(i, n); } |
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66 | void firstOut(Arc& i, const Node& n ) const { _digraph->firstOut(i, n); } |
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67 | |
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68 | void next(Node& i) const { _digraph->next(i); } |
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69 | void next(Arc& i) const { _digraph->next(i); } |
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70 | void nextIn(Arc& i) const { _digraph->nextIn(i); } |
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71 | void nextOut(Arc& i) const { _digraph->nextOut(i); } |
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72 | |
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73 | Node source(const Arc& a) const { return _digraph->source(a); } |
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74 | Node target(const Arc& a) const { return _digraph->target(a); } |
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75 | |
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76 | typedef NodeNumTagIndicator<DGR> NodeNumTag; |
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77 | int nodeNum() const { return _digraph->nodeNum(); } |
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78 | |
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79 | typedef ArcNumTagIndicator<DGR> ArcNumTag; |
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80 | int arcNum() const { return _digraph->arcNum(); } |
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81 | |
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82 | typedef FindArcTagIndicator<DGR> FindArcTag; |
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83 | Arc findArc(const Node& u, const Node& v, const Arc& prev = INVALID) const { |
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84 | return _digraph->findArc(u, v, prev); |
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85 | } |
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86 | |
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87 | Node addNode() { return _digraph->addNode(); } |
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88 | Arc addArc(const Node& u, const Node& v) { return _digraph->addArc(u, v); } |
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89 | |
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90 | void erase(const Node& n) { _digraph->erase(n); } |
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91 | void erase(const Arc& a) { _digraph->erase(a); } |
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92 | |
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93 | void clear() { _digraph->clear(); } |
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94 | |
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95 | int id(const Node& n) const { return _digraph->id(n); } |
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96 | int id(const Arc& a) const { return _digraph->id(a); } |
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97 | |
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98 | Node nodeFromId(int ix) const { return _digraph->nodeFromId(ix); } |
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99 | Arc arcFromId(int ix) const { return _digraph->arcFromId(ix); } |
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100 | |
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101 | int maxNodeId() const { return _digraph->maxNodeId(); } |
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102 | int maxArcId() const { return _digraph->maxArcId(); } |
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103 | |
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104 | typedef typename ItemSetTraits<DGR, Node>::ItemNotifier NodeNotifier; |
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105 | NodeNotifier& notifier(Node) const { return _digraph->notifier(Node()); } |
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106 | |
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107 | typedef typename ItemSetTraits<DGR, Arc>::ItemNotifier ArcNotifier; |
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108 | ArcNotifier& notifier(Arc) const { return _digraph->notifier(Arc()); } |
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109 | |
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110 | template <typename V> |
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111 | class NodeMap : public DGR::template NodeMap<V> { |
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112 | typedef typename DGR::template NodeMap<V> Parent; |
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113 | |
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114 | public: |
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115 | explicit NodeMap(const Adaptor& adaptor) |
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116 | : Parent(*adaptor._digraph) {} |
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117 | NodeMap(const Adaptor& adaptor, const V& value) |
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118 | : Parent(*adaptor._digraph, value) { } |
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119 | |
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120 | private: |
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121 | NodeMap& operator=(const NodeMap& cmap) { |
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122 | return operator=<NodeMap>(cmap); |
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123 | } |
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124 | |
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125 | template <typename CMap> |
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126 | NodeMap& operator=(const CMap& cmap) { |
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127 | Parent::operator=(cmap); |
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128 | return *this; |
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129 | } |
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130 | |
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131 | }; |
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132 | |
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133 | template <typename V> |
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134 | class ArcMap : public DGR::template ArcMap<V> { |
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135 | typedef typename DGR::template ArcMap<V> Parent; |
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136 | |
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137 | public: |
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138 | explicit ArcMap(const DigraphAdaptorBase<DGR>& adaptor) |
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139 | : Parent(*adaptor._digraph) {} |
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140 | ArcMap(const DigraphAdaptorBase<DGR>& adaptor, const V& value) |
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141 | : Parent(*adaptor._digraph, value) {} |
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142 | |
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143 | private: |
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144 | ArcMap& operator=(const ArcMap& cmap) { |
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145 | return operator=<ArcMap>(cmap); |
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146 | } |
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147 | |
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148 | template <typename CMap> |
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149 | ArcMap& operator=(const CMap& cmap) { |
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150 | Parent::operator=(cmap); |
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151 | return *this; |
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152 | } |
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153 | |
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154 | }; |
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155 | |
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156 | }; |
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157 | |
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158 | template<typename GR> |
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159 | class GraphAdaptorBase { |
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160 | public: |
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161 | typedef GR Graph; |
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162 | |
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163 | protected: |
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164 | GR* _graph; |
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165 | |
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166 | GraphAdaptorBase() : _graph(0) {} |
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167 | |
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168 | void initialize(GR& graph) { _graph = &graph; } |
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169 | |
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170 | public: |
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171 | GraphAdaptorBase(GR& graph) : _graph(&graph) {} |
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172 | |
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173 | typedef typename GR::Node Node; |
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174 | typedef typename GR::Arc Arc; |
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175 | typedef typename GR::Edge Edge; |
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176 | |
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177 | void first(Node& i) const { _graph->first(i); } |
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178 | void first(Arc& i) const { _graph->first(i); } |
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179 | void first(Edge& i) const { _graph->first(i); } |
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180 | void firstIn(Arc& i, const Node& n) const { _graph->firstIn(i, n); } |
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181 | void firstOut(Arc& i, const Node& n ) const { _graph->firstOut(i, n); } |
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182 | void firstInc(Edge &i, bool &d, const Node &n) const { |
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183 | _graph->firstInc(i, d, n); |
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184 | } |
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185 | |
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186 | void next(Node& i) const { _graph->next(i); } |
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187 | void next(Arc& i) const { _graph->next(i); } |
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188 | void next(Edge& i) const { _graph->next(i); } |
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189 | void nextIn(Arc& i) const { _graph->nextIn(i); } |
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190 | void nextOut(Arc& i) const { _graph->nextOut(i); } |
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191 | void nextInc(Edge &i, bool &d) const { _graph->nextInc(i, d); } |
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192 | |
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193 | Node u(const Edge& e) const { return _graph->u(e); } |
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194 | Node v(const Edge& e) const { return _graph->v(e); } |
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195 | |
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196 | Node source(const Arc& a) const { return _graph->source(a); } |
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197 | Node target(const Arc& a) const { return _graph->target(a); } |
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198 | |
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199 | typedef NodeNumTagIndicator<Graph> NodeNumTag; |
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200 | int nodeNum() const { return _graph->nodeNum(); } |
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201 | |
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202 | typedef ArcNumTagIndicator<Graph> ArcNumTag; |
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203 | int arcNum() const { return _graph->arcNum(); } |
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204 | |
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205 | typedef EdgeNumTagIndicator<Graph> EdgeNumTag; |
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206 | int edgeNum() const { return _graph->edgeNum(); } |
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207 | |
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208 | typedef FindArcTagIndicator<Graph> FindArcTag; |
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209 | Arc findArc(const Node& u, const Node& v, |
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210 | const Arc& prev = INVALID) const { |
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211 | return _graph->findArc(u, v, prev); |
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212 | } |
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213 | |
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214 | typedef FindEdgeTagIndicator<Graph> FindEdgeTag; |
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215 | Edge findEdge(const Node& u, const Node& v, |
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216 | const Edge& prev = INVALID) const { |
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217 | return _graph->findEdge(u, v, prev); |
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218 | } |
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219 | |
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220 | Node addNode() { return _graph->addNode(); } |
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221 | Edge addEdge(const Node& u, const Node& v) { return _graph->addEdge(u, v); } |
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222 | |
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223 | void erase(const Node& i) { _graph->erase(i); } |
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224 | void erase(const Edge& i) { _graph->erase(i); } |
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225 | |
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226 | void clear() { _graph->clear(); } |
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227 | |
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228 | bool direction(const Arc& a) const { return _graph->direction(a); } |
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229 | Arc direct(const Edge& e, bool d) const { return _graph->direct(e, d); } |
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230 | |
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231 | int id(const Node& v) const { return _graph->id(v); } |
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232 | int id(const Arc& a) const { return _graph->id(a); } |
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233 | int id(const Edge& e) const { return _graph->id(e); } |
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234 | |
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235 | Node nodeFromId(int ix) const { return _graph->nodeFromId(ix); } |
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236 | Arc arcFromId(int ix) const { return _graph->arcFromId(ix); } |
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237 | Edge edgeFromId(int ix) const { return _graph->edgeFromId(ix); } |
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238 | |
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239 | int maxNodeId() const { return _graph->maxNodeId(); } |
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240 | int maxArcId() const { return _graph->maxArcId(); } |
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241 | int maxEdgeId() const { return _graph->maxEdgeId(); } |
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242 | |
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243 | typedef typename ItemSetTraits<GR, Node>::ItemNotifier NodeNotifier; |
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244 | NodeNotifier& notifier(Node) const { return _graph->notifier(Node()); } |
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245 | |
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246 | typedef typename ItemSetTraits<GR, Arc>::ItemNotifier ArcNotifier; |
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247 | ArcNotifier& notifier(Arc) const { return _graph->notifier(Arc()); } |
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248 | |
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249 | typedef typename ItemSetTraits<GR, Edge>::ItemNotifier EdgeNotifier; |
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250 | EdgeNotifier& notifier(Edge) const { return _graph->notifier(Edge()); } |
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251 | |
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252 | template <typename V> |
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253 | class NodeMap : public GR::template NodeMap<V> { |
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254 | typedef typename GR::template NodeMap<V> Parent; |
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255 | |
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256 | public: |
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257 | explicit NodeMap(const GraphAdaptorBase<GR>& adapter) |
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258 | : Parent(*adapter._graph) {} |
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259 | NodeMap(const GraphAdaptorBase<GR>& adapter, const V& value) |
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260 | : Parent(*adapter._graph, value) {} |
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261 | |
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262 | private: |
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263 | NodeMap& operator=(const NodeMap& cmap) { |
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264 | return operator=<NodeMap>(cmap); |
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265 | } |
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266 | |
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267 | template <typename CMap> |
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268 | NodeMap& operator=(const CMap& cmap) { |
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269 | Parent::operator=(cmap); |
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270 | return *this; |
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271 | } |
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272 | |
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273 | }; |
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274 | |
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275 | template <typename V> |
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276 | class ArcMap : public GR::template ArcMap<V> { |
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277 | typedef typename GR::template ArcMap<V> Parent; |
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278 | |
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279 | public: |
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280 | explicit ArcMap(const GraphAdaptorBase<GR>& adapter) |
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281 | : Parent(*adapter._graph) {} |
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282 | ArcMap(const GraphAdaptorBase<GR>& adapter, const V& value) |
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283 | : Parent(*adapter._graph, value) {} |
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284 | |
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285 | private: |
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286 | ArcMap& operator=(const ArcMap& cmap) { |
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287 | return operator=<ArcMap>(cmap); |
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288 | } |
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289 | |
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290 | template <typename CMap> |
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291 | ArcMap& operator=(const CMap& cmap) { |
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292 | Parent::operator=(cmap); |
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293 | return *this; |
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294 | } |
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295 | }; |
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296 | |
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297 | template <typename V> |
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298 | class EdgeMap : public GR::template EdgeMap<V> { |
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299 | typedef typename GR::template EdgeMap<V> Parent; |
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300 | |
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301 | public: |
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302 | explicit EdgeMap(const GraphAdaptorBase<GR>& adapter) |
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303 | : Parent(*adapter._graph) {} |
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304 | EdgeMap(const GraphAdaptorBase<GR>& adapter, const V& value) |
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305 | : Parent(*adapter._graph, value) {} |
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306 | |
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307 | private: |
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308 | EdgeMap& operator=(const EdgeMap& cmap) { |
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309 | return operator=<EdgeMap>(cmap); |
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310 | } |
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311 | |
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312 | template <typename CMap> |
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313 | EdgeMap& operator=(const CMap& cmap) { |
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314 | Parent::operator=(cmap); |
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315 | return *this; |
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316 | } |
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317 | }; |
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318 | |
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319 | }; |
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320 | |
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321 | template <typename DGR> |
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322 | class ReverseDigraphBase : public DigraphAdaptorBase<DGR> { |
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323 | typedef DigraphAdaptorBase<DGR> Parent; |
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324 | public: |
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325 | typedef DGR Digraph; |
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326 | protected: |
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327 | ReverseDigraphBase() : Parent() { } |
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328 | public: |
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329 | typedef typename Parent::Node Node; |
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330 | typedef typename Parent::Arc Arc; |
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331 | |
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332 | void firstIn(Arc& a, const Node& n) const { Parent::firstOut(a, n); } |
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333 | void firstOut(Arc& a, const Node& n ) const { Parent::firstIn(a, n); } |
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334 | |
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335 | void nextIn(Arc& a) const { Parent::nextOut(a); } |
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336 | void nextOut(Arc& a) const { Parent::nextIn(a); } |
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337 | |
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338 | Node source(const Arc& a) const { return Parent::target(a); } |
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339 | Node target(const Arc& a) const { return Parent::source(a); } |
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340 | |
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341 | Arc addArc(const Node& u, const Node& v) { return Parent::addArc(v, u); } |
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342 | |
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343 | typedef FindArcTagIndicator<DGR> FindArcTag; |
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344 | Arc findArc(const Node& u, const Node& v, |
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345 | const Arc& prev = INVALID) const { |
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346 | return Parent::findArc(v, u, prev); |
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347 | } |
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348 | |
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349 | }; |
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350 | |
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351 | /// \ingroup graph_adaptors |
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352 | /// |
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353 | /// \brief Adaptor class for reversing the orientation of the arcs in |
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354 | /// a digraph. |
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355 | /// |
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356 | /// ReverseDigraph can be used for reversing the arcs in a digraph. |
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357 | /// It conforms to the \ref concepts::Digraph "Digraph" concept. |
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358 | /// |
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359 | /// The adapted digraph can also be modified through this adaptor |
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360 | /// by adding or removing nodes or arcs, unless the \c GR template |
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361 | /// parameter is set to be \c const. |
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362 | /// |
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363 | /// \tparam DGR The type of the adapted digraph. |
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364 | /// It must conform to the \ref concepts::Digraph "Digraph" concept. |
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365 | /// It can also be specified to be \c const. |
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366 | /// |
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367 | /// \note The \c Node and \c Arc types of this adaptor and the adapted |
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368 | /// digraph are convertible to each other. |
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369 | template<typename DGR> |
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370 | #ifdef DOXYGEN |
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371 | class ReverseDigraph { |
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372 | #else |
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373 | class ReverseDigraph : |
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374 | public DigraphAdaptorExtender<ReverseDigraphBase<DGR> > { |
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375 | #endif |
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376 | typedef DigraphAdaptorExtender<ReverseDigraphBase<DGR> > Parent; |
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377 | public: |
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378 | /// The type of the adapted digraph. |
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379 | typedef DGR Digraph; |
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380 | protected: |
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381 | ReverseDigraph() { } |
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382 | public: |
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383 | |
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384 | /// \brief Constructor |
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385 | /// |
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386 | /// Creates a reverse digraph adaptor for the given digraph. |
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387 | explicit ReverseDigraph(DGR& digraph) { |
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388 | Parent::initialize(digraph); |
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389 | } |
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390 | }; |
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391 | |
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392 | /// \brief Returns a read-only ReverseDigraph adaptor |
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393 | /// |
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394 | /// This function just returns a read-only \ref ReverseDigraph adaptor. |
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395 | /// \ingroup graph_adaptors |
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396 | /// \relates ReverseDigraph |
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397 | template<typename DGR> |
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398 | ReverseDigraph<const DGR> reverseDigraph(const DGR& digraph) { |
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399 | return ReverseDigraph<const DGR>(digraph); |
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400 | } |
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401 | |
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402 | |
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403 | template <typename DGR, typename NF, typename AF, bool ch = true> |
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404 | class SubDigraphBase : public DigraphAdaptorBase<DGR> { |
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405 | typedef DigraphAdaptorBase<DGR> Parent; |
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406 | public: |
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407 | typedef DGR Digraph; |
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408 | typedef NF NodeFilterMap; |
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409 | typedef AF ArcFilterMap; |
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410 | |
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411 | typedef SubDigraphBase Adaptor; |
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412 | protected: |
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413 | NF* _node_filter; |
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414 | AF* _arc_filter; |
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415 | SubDigraphBase() |
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416 | : Parent(), _node_filter(0), _arc_filter(0) { } |
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417 | |
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418 | void initialize(DGR& digraph, NF& node_filter, AF& arc_filter) { |
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419 | Parent::initialize(digraph); |
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420 | _node_filter = &node_filter; |
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421 | _arc_filter = &arc_filter; |
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422 | } |
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423 | |
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424 | public: |
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425 | |
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426 | typedef typename Parent::Node Node; |
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427 | typedef typename Parent::Arc Arc; |
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428 | |
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429 | void first(Node& i) const { |
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430 | Parent::first(i); |
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431 | while (i != INVALID && !(*_node_filter)[i]) Parent::next(i); |
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432 | } |
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433 | |
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434 | void first(Arc& i) const { |
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435 | Parent::first(i); |
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436 | while (i != INVALID && (!(*_arc_filter)[i] |
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437 | || !(*_node_filter)[Parent::source(i)] |
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438 | || !(*_node_filter)[Parent::target(i)])) |
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439 | Parent::next(i); |
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440 | } |
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441 | |
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442 | void firstIn(Arc& i, const Node& n) const { |
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443 | Parent::firstIn(i, n); |
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444 | while (i != INVALID && (!(*_arc_filter)[i] |
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445 | || !(*_node_filter)[Parent::source(i)])) |
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446 | Parent::nextIn(i); |
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447 | } |
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448 | |
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449 | void firstOut(Arc& i, const Node& n) const { |
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450 | Parent::firstOut(i, n); |
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451 | while (i != INVALID && (!(*_arc_filter)[i] |
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452 | || !(*_node_filter)[Parent::target(i)])) |
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453 | Parent::nextOut(i); |
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454 | } |
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455 | |
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456 | void next(Node& i) const { |
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457 | Parent::next(i); |
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458 | while (i != INVALID && !(*_node_filter)[i]) Parent::next(i); |
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459 | } |
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460 | |
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461 | void next(Arc& i) const { |
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462 | Parent::next(i); |
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463 | while (i != INVALID && (!(*_arc_filter)[i] |
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464 | || !(*_node_filter)[Parent::source(i)] |
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465 | || !(*_node_filter)[Parent::target(i)])) |
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466 | Parent::next(i); |
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467 | } |
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468 | |
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469 | void nextIn(Arc& i) const { |
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470 | Parent::nextIn(i); |
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471 | while (i != INVALID && (!(*_arc_filter)[i] |
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472 | || !(*_node_filter)[Parent::source(i)])) |
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473 | Parent::nextIn(i); |
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474 | } |
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475 | |
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476 | void nextOut(Arc& i) const { |
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477 | Parent::nextOut(i); |
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478 | while (i != INVALID && (!(*_arc_filter)[i] |
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479 | || !(*_node_filter)[Parent::target(i)])) |
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480 | Parent::nextOut(i); |
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481 | } |
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482 | |
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483 | void status(const Node& n, bool v) const { _node_filter->set(n, v); } |
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484 | void status(const Arc& a, bool v) const { _arc_filter->set(a, v); } |
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485 | |
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486 | bool status(const Node& n) const { return (*_node_filter)[n]; } |
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487 | bool status(const Arc& a) const { return (*_arc_filter)[a]; } |
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488 | |
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489 | typedef False NodeNumTag; |
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490 | typedef False ArcNumTag; |
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491 | |
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492 | typedef FindArcTagIndicator<DGR> FindArcTag; |
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493 | Arc findArc(const Node& source, const Node& target, |
---|
494 | const Arc& prev = INVALID) const { |
---|
495 | if (!(*_node_filter)[source] || !(*_node_filter)[target]) { |
---|
496 | return INVALID; |
---|
497 | } |
---|
498 | Arc arc = Parent::findArc(source, target, prev); |
---|
499 | while (arc != INVALID && !(*_arc_filter)[arc]) { |
---|
500 | arc = Parent::findArc(source, target, arc); |
---|
501 | } |
---|
502 | return arc; |
---|
503 | } |
---|
504 | |
---|
505 | public: |
---|
506 | |
---|
507 | template <typename V> |
---|
508 | class NodeMap |
---|
509 | : public SubMapExtender<SubDigraphBase<DGR, NF, AF, ch>, |
---|
510 | LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, NodeMap<V>)> { |
---|
511 | typedef SubMapExtender<SubDigraphBase<DGR, NF, AF, ch>, |
---|
512 | LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, NodeMap<V>)> Parent; |
---|
513 | |
---|
514 | public: |
---|
515 | typedef V Value; |
---|
516 | |
---|
517 | NodeMap(const SubDigraphBase<DGR, NF, AF, ch>& adaptor) |
---|
518 | : Parent(adaptor) {} |
---|
519 | NodeMap(const SubDigraphBase<DGR, NF, AF, ch>& adaptor, const V& value) |
---|
520 | : Parent(adaptor, value) {} |
---|
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 | typedef SubMapExtender<SubDigraphBase<DGR, NF, AF, ch>, |
---|
539 | LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, ArcMap<V>)> Parent; |
---|
540 | |
---|
541 | public: |
---|
542 | typedef V Value; |
---|
543 | |
---|
544 | ArcMap(const SubDigraphBase<DGR, NF, AF, ch>& adaptor) |
---|
545 | : Parent(adaptor) {} |
---|
546 | ArcMap(const SubDigraphBase<DGR, NF, AF, ch>& adaptor, const V& value) |
---|
547 | : Parent(adaptor, value) {} |
---|
548 | |
---|
549 | private: |
---|
550 | ArcMap& operator=(const ArcMap& cmap) { |
---|
551 | return operator=<ArcMap>(cmap); |
---|
552 | } |
---|
553 | |
---|
554 | template <typename CMap> |
---|
555 | ArcMap& operator=(const CMap& cmap) { |
---|
556 | Parent::operator=(cmap); |
---|
557 | return *this; |
---|
558 | } |
---|
559 | }; |
---|
560 | |
---|
561 | }; |
---|
562 | |
---|
563 | template <typename DGR, typename NF, typename AF> |
---|
564 | class SubDigraphBase<DGR, NF, AF, false> |
---|
565 | : public DigraphAdaptorBase<DGR> { |
---|
566 | typedef DigraphAdaptorBase<DGR> Parent; |
---|
567 | public: |
---|
568 | typedef DGR Digraph; |
---|
569 | typedef NF NodeFilterMap; |
---|
570 | typedef AF ArcFilterMap; |
---|
571 | |
---|
572 | typedef SubDigraphBase Adaptor; |
---|
573 | protected: |
---|
574 | NF* _node_filter; |
---|
575 | AF* _arc_filter; |
---|
576 | SubDigraphBase() |
---|
577 | : Parent(), _node_filter(0), _arc_filter(0) { } |
---|
578 | |
---|
579 | void initialize(DGR& digraph, NF& node_filter, AF& arc_filter) { |
---|
580 | Parent::initialize(digraph); |
---|
581 | _node_filter = &node_filter; |
---|
582 | _arc_filter = &arc_filter; |
---|
583 | } |
---|
584 | |
---|
585 | public: |
---|
586 | |
---|
587 | typedef typename Parent::Node Node; |
---|
588 | typedef typename Parent::Arc Arc; |
---|
589 | |
---|
590 | void first(Node& i) const { |
---|
591 | Parent::first(i); |
---|
592 | while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
---|
593 | } |
---|
594 | |
---|
595 | void first(Arc& i) const { |
---|
596 | Parent::first(i); |
---|
597 | while (i!=INVALID && !(*_arc_filter)[i]) Parent::next(i); |
---|
598 | } |
---|
599 | |
---|
600 | void firstIn(Arc& i, const Node& n) const { |
---|
601 | Parent::firstIn(i, n); |
---|
602 | while (i!=INVALID && !(*_arc_filter)[i]) Parent::nextIn(i); |
---|
603 | } |
---|
604 | |
---|
605 | void firstOut(Arc& i, const Node& n) const { |
---|
606 | Parent::firstOut(i, n); |
---|
607 | while (i!=INVALID && !(*_arc_filter)[i]) Parent::nextOut(i); |
---|
608 | } |
---|
609 | |
---|
610 | void next(Node& i) const { |
---|
611 | Parent::next(i); |
---|
612 | while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
---|
613 | } |
---|
614 | void next(Arc& i) const { |
---|
615 | Parent::next(i); |
---|
616 | while (i!=INVALID && !(*_arc_filter)[i]) Parent::next(i); |
---|
617 | } |
---|
618 | void nextIn(Arc& i) const { |
---|
619 | Parent::nextIn(i); |
---|
620 | while (i!=INVALID && !(*_arc_filter)[i]) Parent::nextIn(i); |
---|
621 | } |
---|
622 | |
---|
623 | void nextOut(Arc& i) const { |
---|
624 | Parent::nextOut(i); |
---|
625 | while (i!=INVALID && !(*_arc_filter)[i]) Parent::nextOut(i); |
---|
626 | } |
---|
627 | |
---|
628 | void status(const Node& n, bool v) const { _node_filter->set(n, v); } |
---|
629 | void status(const Arc& a, bool v) const { _arc_filter->set(a, v); } |
---|
630 | |
---|
631 | bool status(const Node& n) const { return (*_node_filter)[n]; } |
---|
632 | bool status(const Arc& a) const { return (*_arc_filter)[a]; } |
---|
633 | |
---|
634 | typedef False NodeNumTag; |
---|
635 | typedef False ArcNumTag; |
---|
636 | |
---|
637 | typedef FindArcTagIndicator<DGR> FindArcTag; |
---|
638 | Arc findArc(const Node& source, const Node& target, |
---|
639 | const Arc& prev = INVALID) const { |
---|
640 | if (!(*_node_filter)[source] || !(*_node_filter)[target]) { |
---|
641 | return INVALID; |
---|
642 | } |
---|
643 | Arc arc = Parent::findArc(source, target, prev); |
---|
644 | while (arc != INVALID && !(*_arc_filter)[arc]) { |
---|
645 | arc = Parent::findArc(source, target, arc); |
---|
646 | } |
---|
647 | return arc; |
---|
648 | } |
---|
649 | |
---|
650 | template <typename V> |
---|
651 | class NodeMap |
---|
652 | : public SubMapExtender<SubDigraphBase<DGR, NF, AF, false>, |
---|
653 | LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, NodeMap<V>)> { |
---|
654 | typedef SubMapExtender<SubDigraphBase<DGR, NF, AF, false>, |
---|
655 | LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, NodeMap<V>)> Parent; |
---|
656 | |
---|
657 | public: |
---|
658 | typedef V Value; |
---|
659 | |
---|
660 | NodeMap(const SubDigraphBase<DGR, NF, AF, false>& adaptor) |
---|
661 | : Parent(adaptor) {} |
---|
662 | NodeMap(const SubDigraphBase<DGR, NF, AF, false>& adaptor, const V& value) |
---|
663 | : Parent(adaptor, value) {} |
---|
664 | |
---|
665 | private: |
---|
666 | NodeMap& operator=(const NodeMap& cmap) { |
---|
667 | return operator=<NodeMap>(cmap); |
---|
668 | } |
---|
669 | |
---|
670 | template <typename CMap> |
---|
671 | NodeMap& operator=(const CMap& cmap) { |
---|
672 | Parent::operator=(cmap); |
---|
673 | return *this; |
---|
674 | } |
---|
675 | }; |
---|
676 | |
---|
677 | template <typename V> |
---|
678 | class ArcMap |
---|
679 | : public SubMapExtender<SubDigraphBase<DGR, NF, AF, false>, |
---|
680 | LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, ArcMap<V>)> { |
---|
681 | typedef SubMapExtender<SubDigraphBase<DGR, NF, AF, false>, |
---|
682 | LEMON_SCOPE_FIX(DigraphAdaptorBase<DGR>, ArcMap<V>)> Parent; |
---|
683 | |
---|
684 | public: |
---|
685 | typedef V Value; |
---|
686 | |
---|
687 | ArcMap(const SubDigraphBase<DGR, NF, AF, false>& adaptor) |
---|
688 | : Parent(adaptor) {} |
---|
689 | ArcMap(const SubDigraphBase<DGR, NF, AF, false>& adaptor, const V& value) |
---|
690 | : Parent(adaptor, value) {} |
---|
691 | |
---|
692 | private: |
---|
693 | ArcMap& operator=(const ArcMap& cmap) { |
---|
694 | return operator=<ArcMap>(cmap); |
---|
695 | } |
---|
696 | |
---|
697 | template <typename CMap> |
---|
698 | ArcMap& operator=(const CMap& cmap) { |
---|
699 | Parent::operator=(cmap); |
---|
700 | return *this; |
---|
701 | } |
---|
702 | }; |
---|
703 | |
---|
704 | }; |
---|
705 | |
---|
706 | /// \ingroup graph_adaptors |
---|
707 | /// |
---|
708 | /// \brief Adaptor class for hiding nodes and arcs in a digraph |
---|
709 | /// |
---|
710 | /// SubDigraph can be used for hiding nodes and arcs in a digraph. |
---|
711 | /// A \c bool node map and a \c bool arc map must be specified, which |
---|
712 | /// define the filters for nodes and arcs. |
---|
713 | /// Only the nodes and arcs with \c true filter value are |
---|
714 | /// shown in the subdigraph. The arcs that are incident to hidden |
---|
715 | /// nodes are also filtered out. |
---|
716 | /// This adaptor conforms to the \ref concepts::Digraph "Digraph" concept. |
---|
717 | /// |
---|
718 | /// The adapted digraph can also be modified through this adaptor |
---|
719 | /// by adding or removing nodes or arcs, unless the \c GR template |
---|
720 | /// parameter is set to be \c const. |
---|
721 | /// |
---|
722 | /// \tparam DGR The type of the adapted digraph. |
---|
723 | /// It must conform to the \ref concepts::Digraph "Digraph" concept. |
---|
724 | /// It can also be specified to be \c const. |
---|
725 | /// \tparam NF The type of the node filter map. |
---|
726 | /// It must be a \c bool (or convertible) node map of the |
---|
727 | /// adapted digraph. The default type is |
---|
728 | /// \ref concepts::Digraph::NodeMap "DGR::NodeMap<bool>". |
---|
729 | /// \tparam AF The type of the arc filter map. |
---|
730 | /// It must be \c bool (or convertible) arc map of the |
---|
731 | /// adapted digraph. The default type is |
---|
732 | /// \ref concepts::Digraph::ArcMap "DGR::ArcMap<bool>". |
---|
733 | /// |
---|
734 | /// \note The \c Node and \c Arc types of this adaptor and the adapted |
---|
735 | /// digraph are convertible to each other. |
---|
736 | /// |
---|
737 | /// \see FilterNodes |
---|
738 | /// \see FilterArcs |
---|
739 | #ifdef DOXYGEN |
---|
740 | template<typename DGR, typename NF, typename AF> |
---|
741 | class SubDigraph { |
---|
742 | #else |
---|
743 | template<typename DGR, |
---|
744 | typename NF = typename DGR::template NodeMap<bool>, |
---|
745 | typename AF = typename DGR::template ArcMap<bool> > |
---|
746 | class SubDigraph : |
---|
747 | public DigraphAdaptorExtender<SubDigraphBase<DGR, NF, AF, true> > { |
---|
748 | #endif |
---|
749 | public: |
---|
750 | /// The type of the adapted digraph. |
---|
751 | typedef DGR Digraph; |
---|
752 | /// The type of the node filter map. |
---|
753 | typedef NF NodeFilterMap; |
---|
754 | /// The type of the arc filter map. |
---|
755 | typedef AF ArcFilterMap; |
---|
756 | |
---|
757 | typedef DigraphAdaptorExtender<SubDigraphBase<DGR, NF, AF, true> > |
---|
758 | Parent; |
---|
759 | |
---|
760 | typedef typename Parent::Node Node; |
---|
761 | typedef typename Parent::Arc Arc; |
---|
762 | |
---|
763 | protected: |
---|
764 | SubDigraph() { } |
---|
765 | public: |
---|
766 | |
---|
767 | /// \brief Constructor |
---|
768 | /// |
---|
769 | /// Creates a subdigraph for the given digraph with the |
---|
770 | /// given node and arc filter maps. |
---|
771 | SubDigraph(DGR& digraph, NF& node_filter, AF& arc_filter) { |
---|
772 | Parent::initialize(digraph, node_filter, arc_filter); |
---|
773 | } |
---|
774 | |
---|
775 | /// \brief Sets the status of the given node |
---|
776 | /// |
---|
777 | /// This function sets the status of the given node. |
---|
778 | /// It is done by simply setting the assigned value of \c n |
---|
779 | /// to \c v in the node filter map. |
---|
780 | void status(const Node& n, bool v) const { Parent::status(n, v); } |
---|
781 | |
---|
782 | /// \brief Sets the status of the given arc |
---|
783 | /// |
---|
784 | /// This function sets the status of the given arc. |
---|
785 | /// It is done by simply setting the assigned value of \c a |
---|
786 | /// to \c v in the arc filter map. |
---|
787 | void status(const Arc& a, bool v) const { Parent::status(a, v); } |
---|
788 | |
---|
789 | /// \brief Returns the status of the given node |
---|
790 | /// |
---|
791 | /// This function returns the status of the given node. |
---|
792 | /// It is \c true if the given node is enabled (i.e. not hidden). |
---|
793 | bool status(const Node& n) const { return Parent::status(n); } |
---|
794 | |
---|
795 | /// \brief Returns the status of the given arc |
---|
796 | /// |
---|
797 | /// This function returns the status of the given arc. |
---|
798 | /// It is \c true if the given arc is enabled (i.e. not hidden). |
---|
799 | bool status(const Arc& a) const { return Parent::status(a); } |
---|
800 | |
---|
801 | /// \brief Disables the given node |
---|
802 | /// |
---|
803 | /// This function disables the given node in the subdigraph, |
---|
804 | /// so the iteration jumps over it. |
---|
805 | /// It is the same as \ref status() "status(n, false)". |
---|
806 | void disable(const Node& n) const { Parent::status(n, false); } |
---|
807 | |
---|
808 | /// \brief Disables the given arc |
---|
809 | /// |
---|
810 | /// This function disables the given arc in the subdigraph, |
---|
811 | /// so the iteration jumps over it. |
---|
812 | /// It is the same as \ref status() "status(a, false)". |
---|
813 | void disable(const Arc& a) const { Parent::status(a, false); } |
---|
814 | |
---|
815 | /// \brief Enables the given node |
---|
816 | /// |
---|
817 | /// This function enables the given node in the subdigraph. |
---|
818 | /// It is the same as \ref status() "status(n, true)". |
---|
819 | void enable(const Node& n) const { Parent::status(n, true); } |
---|
820 | |
---|
821 | /// \brief Enables the given arc |
---|
822 | /// |
---|
823 | /// This function enables the given arc in the subdigraph. |
---|
824 | /// It is the same as \ref status() "status(a, true)". |
---|
825 | void enable(const Arc& a) const { Parent::status(a, true); } |
---|
826 | |
---|
827 | }; |
---|
828 | |
---|
829 | /// \brief Returns a read-only SubDigraph adaptor |
---|
830 | /// |
---|
831 | /// This function just returns a read-only \ref SubDigraph adaptor. |
---|
832 | /// \ingroup graph_adaptors |
---|
833 | /// \relates SubDigraph |
---|
834 | template<typename DGR, typename NF, typename AF> |
---|
835 | SubDigraph<const DGR, NF, AF> |
---|
836 | subDigraph(const DGR& digraph, |
---|
837 | NF& node_filter, AF& arc_filter) { |
---|
838 | return SubDigraph<const DGR, NF, AF> |
---|
839 | (digraph, node_filter, arc_filter); |
---|
840 | } |
---|
841 | |
---|
842 | template<typename DGR, typename NF, typename AF> |
---|
843 | SubDigraph<const DGR, const NF, AF> |
---|
844 | subDigraph(const DGR& digraph, |
---|
845 | const NF& node_filter, AF& arc_filter) { |
---|
846 | return SubDigraph<const DGR, const NF, AF> |
---|
847 | (digraph, node_filter, arc_filter); |
---|
848 | } |
---|
849 | |
---|
850 | template<typename DGR, typename NF, typename AF> |
---|
851 | SubDigraph<const DGR, NF, const AF> |
---|
852 | subDigraph(const DGR& digraph, |
---|
853 | NF& node_filter, const AF& arc_filter) { |
---|
854 | return SubDigraph<const DGR, NF, const AF> |
---|
855 | (digraph, node_filter, arc_filter); |
---|
856 | } |
---|
857 | |
---|
858 | template<typename DGR, typename NF, typename AF> |
---|
859 | SubDigraph<const DGR, const NF, const AF> |
---|
860 | subDigraph(const DGR& digraph, |
---|
861 | const NF& node_filter, const AF& arc_filter) { |
---|
862 | return SubDigraph<const DGR, const NF, const AF> |
---|
863 | (digraph, node_filter, arc_filter); |
---|
864 | } |
---|
865 | |
---|
866 | |
---|
867 | template <typename GR, typename NF, typename EF, bool ch = true> |
---|
868 | class SubGraphBase : public GraphAdaptorBase<GR> { |
---|
869 | typedef GraphAdaptorBase<GR> Parent; |
---|
870 | public: |
---|
871 | typedef GR Graph; |
---|
872 | typedef NF NodeFilterMap; |
---|
873 | typedef EF EdgeFilterMap; |
---|
874 | |
---|
875 | typedef SubGraphBase Adaptor; |
---|
876 | protected: |
---|
877 | |
---|
878 | NF* _node_filter; |
---|
879 | EF* _edge_filter; |
---|
880 | |
---|
881 | SubGraphBase() |
---|
882 | : Parent(), _node_filter(0), _edge_filter(0) { } |
---|
883 | |
---|
884 | void initialize(GR& graph, NF& node_filter, EF& edge_filter) { |
---|
885 | Parent::initialize(graph); |
---|
886 | _node_filter = &node_filter; |
---|
887 | _edge_filter = &edge_filter; |
---|
888 | } |
---|
889 | |
---|
890 | public: |
---|
891 | |
---|
892 | typedef typename Parent::Node Node; |
---|
893 | typedef typename Parent::Arc Arc; |
---|
894 | typedef typename Parent::Edge Edge; |
---|
895 | |
---|
896 | void first(Node& i) const { |
---|
897 | Parent::first(i); |
---|
898 | while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
---|
899 | } |
---|
900 | |
---|
901 | void first(Arc& i) const { |
---|
902 | Parent::first(i); |
---|
903 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
904 | || !(*_node_filter)[Parent::source(i)] |
---|
905 | || !(*_node_filter)[Parent::target(i)])) |
---|
906 | Parent::next(i); |
---|
907 | } |
---|
908 | |
---|
909 | void first(Edge& i) const { |
---|
910 | Parent::first(i); |
---|
911 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
912 | || !(*_node_filter)[Parent::u(i)] |
---|
913 | || !(*_node_filter)[Parent::v(i)])) |
---|
914 | Parent::next(i); |
---|
915 | } |
---|
916 | |
---|
917 | void firstIn(Arc& i, const Node& n) const { |
---|
918 | Parent::firstIn(i, n); |
---|
919 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
920 | || !(*_node_filter)[Parent::source(i)])) |
---|
921 | Parent::nextIn(i); |
---|
922 | } |
---|
923 | |
---|
924 | void firstOut(Arc& i, const Node& n) const { |
---|
925 | Parent::firstOut(i, n); |
---|
926 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
927 | || !(*_node_filter)[Parent::target(i)])) |
---|
928 | Parent::nextOut(i); |
---|
929 | } |
---|
930 | |
---|
931 | void firstInc(Edge& i, bool& d, const Node& n) const { |
---|
932 | Parent::firstInc(i, d, n); |
---|
933 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
934 | || !(*_node_filter)[Parent::u(i)] |
---|
935 | || !(*_node_filter)[Parent::v(i)])) |
---|
936 | Parent::nextInc(i, d); |
---|
937 | } |
---|
938 | |
---|
939 | void next(Node& i) const { |
---|
940 | Parent::next(i); |
---|
941 | while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
---|
942 | } |
---|
943 | |
---|
944 | void next(Arc& i) const { |
---|
945 | Parent::next(i); |
---|
946 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
947 | || !(*_node_filter)[Parent::source(i)] |
---|
948 | || !(*_node_filter)[Parent::target(i)])) |
---|
949 | Parent::next(i); |
---|
950 | } |
---|
951 | |
---|
952 | void next(Edge& i) const { |
---|
953 | Parent::next(i); |
---|
954 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
955 | || !(*_node_filter)[Parent::u(i)] |
---|
956 | || !(*_node_filter)[Parent::v(i)])) |
---|
957 | Parent::next(i); |
---|
958 | } |
---|
959 | |
---|
960 | void nextIn(Arc& i) const { |
---|
961 | Parent::nextIn(i); |
---|
962 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
963 | || !(*_node_filter)[Parent::source(i)])) |
---|
964 | Parent::nextIn(i); |
---|
965 | } |
---|
966 | |
---|
967 | void nextOut(Arc& i) const { |
---|
968 | Parent::nextOut(i); |
---|
969 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
970 | || !(*_node_filter)[Parent::target(i)])) |
---|
971 | Parent::nextOut(i); |
---|
972 | } |
---|
973 | |
---|
974 | void nextInc(Edge& i, bool& d) const { |
---|
975 | Parent::nextInc(i, d); |
---|
976 | while (i!=INVALID && (!(*_edge_filter)[i] |
---|
977 | || !(*_node_filter)[Parent::u(i)] |
---|
978 | || !(*_node_filter)[Parent::v(i)])) |
---|
979 | Parent::nextInc(i, d); |
---|
980 | } |
---|
981 | |
---|
982 | void status(const Node& n, bool v) const { _node_filter->set(n, v); } |
---|
983 | void status(const Edge& e, bool v) const { _edge_filter->set(e, v); } |
---|
984 | |
---|
985 | bool status(const Node& n) const { return (*_node_filter)[n]; } |
---|
986 | bool status(const Edge& e) const { return (*_edge_filter)[e]; } |
---|
987 | |
---|
988 | typedef False NodeNumTag; |
---|
989 | typedef False ArcNumTag; |
---|
990 | typedef False EdgeNumTag; |
---|
991 | |
---|
992 | typedef FindArcTagIndicator<Graph> FindArcTag; |
---|
993 | Arc findArc(const Node& u, const Node& v, |
---|
994 | const Arc& prev = INVALID) const { |
---|
995 | if (!(*_node_filter)[u] || !(*_node_filter)[v]) { |
---|
996 | return INVALID; |
---|
997 | } |
---|
998 | Arc arc = Parent::findArc(u, v, prev); |
---|
999 | while (arc != INVALID && !(*_edge_filter)[arc]) { |
---|
1000 | arc = Parent::findArc(u, v, arc); |
---|
1001 | } |
---|
1002 | return arc; |
---|
1003 | } |
---|
1004 | |
---|
1005 | typedef FindEdgeTagIndicator<Graph> FindEdgeTag; |
---|
1006 | Edge findEdge(const Node& u, const Node& v, |
---|
1007 | const Edge& prev = INVALID) const { |
---|
1008 | if (!(*_node_filter)[u] || !(*_node_filter)[v]) { |
---|
1009 | return INVALID; |
---|
1010 | } |
---|
1011 | Edge edge = Parent::findEdge(u, v, prev); |
---|
1012 | while (edge != INVALID && !(*_edge_filter)[edge]) { |
---|
1013 | edge = Parent::findEdge(u, v, edge); |
---|
1014 | } |
---|
1015 | return edge; |
---|
1016 | } |
---|
1017 | |
---|
1018 | template <typename V> |
---|
1019 | class NodeMap |
---|
1020 | : public SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
---|
1021 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, NodeMap<V>)> { |
---|
1022 | typedef SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
---|
1023 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, NodeMap<V>)> Parent; |
---|
1024 | |
---|
1025 | public: |
---|
1026 | typedef V Value; |
---|
1027 | |
---|
1028 | NodeMap(const SubGraphBase<GR, NF, EF, ch>& adaptor) |
---|
1029 | : Parent(adaptor) {} |
---|
1030 | NodeMap(const SubGraphBase<GR, NF, EF, ch>& adaptor, const V& value) |
---|
1031 | : Parent(adaptor, value) {} |
---|
1032 | |
---|
1033 | private: |
---|
1034 | NodeMap& operator=(const NodeMap& cmap) { |
---|
1035 | return operator=<NodeMap>(cmap); |
---|
1036 | } |
---|
1037 | |
---|
1038 | template <typename CMap> |
---|
1039 | NodeMap& operator=(const CMap& cmap) { |
---|
1040 | Parent::operator=(cmap); |
---|
1041 | return *this; |
---|
1042 | } |
---|
1043 | }; |
---|
1044 | |
---|
1045 | template <typename V> |
---|
1046 | class ArcMap |
---|
1047 | : public SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
---|
1048 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, ArcMap<V>)> { |
---|
1049 | typedef SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
---|
1050 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, ArcMap<V>)> Parent; |
---|
1051 | |
---|
1052 | public: |
---|
1053 | typedef V Value; |
---|
1054 | |
---|
1055 | ArcMap(const SubGraphBase<GR, NF, EF, ch>& adaptor) |
---|
1056 | : Parent(adaptor) {} |
---|
1057 | ArcMap(const SubGraphBase<GR, NF, EF, ch>& adaptor, const V& value) |
---|
1058 | : Parent(adaptor, value) {} |
---|
1059 | |
---|
1060 | private: |
---|
1061 | ArcMap& operator=(const ArcMap& cmap) { |
---|
1062 | return operator=<ArcMap>(cmap); |
---|
1063 | } |
---|
1064 | |
---|
1065 | template <typename CMap> |
---|
1066 | ArcMap& operator=(const CMap& cmap) { |
---|
1067 | Parent::operator=(cmap); |
---|
1068 | return *this; |
---|
1069 | } |
---|
1070 | }; |
---|
1071 | |
---|
1072 | template <typename V> |
---|
1073 | class EdgeMap |
---|
1074 | : public SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
---|
1075 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, EdgeMap<V>)> { |
---|
1076 | typedef SubMapExtender<SubGraphBase<GR, NF, EF, ch>, |
---|
1077 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, EdgeMap<V>)> Parent; |
---|
1078 | |
---|
1079 | public: |
---|
1080 | typedef V Value; |
---|
1081 | |
---|
1082 | EdgeMap(const SubGraphBase<GR, NF, EF, ch>& adaptor) |
---|
1083 | : Parent(adaptor) {} |
---|
1084 | |
---|
1085 | EdgeMap(const SubGraphBase<GR, NF, EF, ch>& adaptor, const V& value) |
---|
1086 | : Parent(adaptor, value) {} |
---|
1087 | |
---|
1088 | private: |
---|
1089 | EdgeMap& operator=(const EdgeMap& cmap) { |
---|
1090 | return operator=<EdgeMap>(cmap); |
---|
1091 | } |
---|
1092 | |
---|
1093 | template <typename CMap> |
---|
1094 | EdgeMap& operator=(const CMap& cmap) { |
---|
1095 | Parent::operator=(cmap); |
---|
1096 | return *this; |
---|
1097 | } |
---|
1098 | }; |
---|
1099 | |
---|
1100 | }; |
---|
1101 | |
---|
1102 | template <typename GR, typename NF, typename EF> |
---|
1103 | class SubGraphBase<GR, NF, EF, false> |
---|
1104 | : public GraphAdaptorBase<GR> { |
---|
1105 | typedef GraphAdaptorBase<GR> Parent; |
---|
1106 | public: |
---|
1107 | typedef GR Graph; |
---|
1108 | typedef NF NodeFilterMap; |
---|
1109 | typedef EF EdgeFilterMap; |
---|
1110 | |
---|
1111 | typedef SubGraphBase Adaptor; |
---|
1112 | protected: |
---|
1113 | NF* _node_filter; |
---|
1114 | EF* _edge_filter; |
---|
1115 | SubGraphBase() |
---|
1116 | : Parent(), _node_filter(0), _edge_filter(0) { } |
---|
1117 | |
---|
1118 | void initialize(GR& graph, NF& node_filter, EF& edge_filter) { |
---|
1119 | Parent::initialize(graph); |
---|
1120 | _node_filter = &node_filter; |
---|
1121 | _edge_filter = &edge_filter; |
---|
1122 | } |
---|
1123 | |
---|
1124 | public: |
---|
1125 | |
---|
1126 | typedef typename Parent::Node Node; |
---|
1127 | typedef typename Parent::Arc Arc; |
---|
1128 | typedef typename Parent::Edge Edge; |
---|
1129 | |
---|
1130 | void first(Node& i) const { |
---|
1131 | Parent::first(i); |
---|
1132 | while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
---|
1133 | } |
---|
1134 | |
---|
1135 | void first(Arc& i) const { |
---|
1136 | Parent::first(i); |
---|
1137 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::next(i); |
---|
1138 | } |
---|
1139 | |
---|
1140 | void first(Edge& i) const { |
---|
1141 | Parent::first(i); |
---|
1142 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::next(i); |
---|
1143 | } |
---|
1144 | |
---|
1145 | void firstIn(Arc& i, const Node& n) const { |
---|
1146 | Parent::firstIn(i, n); |
---|
1147 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextIn(i); |
---|
1148 | } |
---|
1149 | |
---|
1150 | void firstOut(Arc& i, const Node& n) const { |
---|
1151 | Parent::firstOut(i, n); |
---|
1152 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextOut(i); |
---|
1153 | } |
---|
1154 | |
---|
1155 | void firstInc(Edge& i, bool& d, const Node& n) const { |
---|
1156 | Parent::firstInc(i, d, n); |
---|
1157 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextInc(i, d); |
---|
1158 | } |
---|
1159 | |
---|
1160 | void next(Node& i) const { |
---|
1161 | Parent::next(i); |
---|
1162 | while (i!=INVALID && !(*_node_filter)[i]) Parent::next(i); |
---|
1163 | } |
---|
1164 | void next(Arc& i) const { |
---|
1165 | Parent::next(i); |
---|
1166 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::next(i); |
---|
1167 | } |
---|
1168 | void next(Edge& i) const { |
---|
1169 | Parent::next(i); |
---|
1170 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::next(i); |
---|
1171 | } |
---|
1172 | void nextIn(Arc& i) const { |
---|
1173 | Parent::nextIn(i); |
---|
1174 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextIn(i); |
---|
1175 | } |
---|
1176 | |
---|
1177 | void nextOut(Arc& i) const { |
---|
1178 | Parent::nextOut(i); |
---|
1179 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextOut(i); |
---|
1180 | } |
---|
1181 | void nextInc(Edge& i, bool& d) const { |
---|
1182 | Parent::nextInc(i, d); |
---|
1183 | while (i!=INVALID && !(*_edge_filter)[i]) Parent::nextInc(i, d); |
---|
1184 | } |
---|
1185 | |
---|
1186 | void status(const Node& n, bool v) const { _node_filter->set(n, v); } |
---|
1187 | void status(const Edge& e, bool v) const { _edge_filter->set(e, v); } |
---|
1188 | |
---|
1189 | bool status(const Node& n) const { return (*_node_filter)[n]; } |
---|
1190 | bool status(const Edge& e) const { return (*_edge_filter)[e]; } |
---|
1191 | |
---|
1192 | typedef False NodeNumTag; |
---|
1193 | typedef False ArcNumTag; |
---|
1194 | typedef False EdgeNumTag; |
---|
1195 | |
---|
1196 | typedef FindArcTagIndicator<Graph> FindArcTag; |
---|
1197 | Arc findArc(const Node& u, const Node& v, |
---|
1198 | const Arc& prev = INVALID) const { |
---|
1199 | Arc arc = Parent::findArc(u, v, prev); |
---|
1200 | while (arc != INVALID && !(*_edge_filter)[arc]) { |
---|
1201 | arc = Parent::findArc(u, v, arc); |
---|
1202 | } |
---|
1203 | return arc; |
---|
1204 | } |
---|
1205 | |
---|
1206 | typedef FindEdgeTagIndicator<Graph> FindEdgeTag; |
---|
1207 | Edge findEdge(const Node& u, const Node& v, |
---|
1208 | const Edge& prev = INVALID) const { |
---|
1209 | Edge edge = Parent::findEdge(u, v, prev); |
---|
1210 | while (edge != INVALID && !(*_edge_filter)[edge]) { |
---|
1211 | edge = Parent::findEdge(u, v, edge); |
---|
1212 | } |
---|
1213 | return edge; |
---|
1214 | } |
---|
1215 | |
---|
1216 | template <typename V> |
---|
1217 | class NodeMap |
---|
1218 | : public SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
---|
1219 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, NodeMap<V>)> { |
---|
1220 | typedef SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
---|
1221 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, NodeMap<V>)> Parent; |
---|
1222 | |
---|
1223 | public: |
---|
1224 | typedef V Value; |
---|
1225 | |
---|
1226 | NodeMap(const SubGraphBase<GR, NF, EF, false>& adaptor) |
---|
1227 | : Parent(adaptor) {} |
---|
1228 | NodeMap(const SubGraphBase<GR, NF, EF, false>& adaptor, const V& value) |
---|
1229 | : Parent(adaptor, value) {} |
---|
1230 | |
---|
1231 | private: |
---|
1232 | NodeMap& operator=(const NodeMap& cmap) { |
---|
1233 | return operator=<NodeMap>(cmap); |
---|
1234 | } |
---|
1235 | |
---|
1236 | template <typename CMap> |
---|
1237 | NodeMap& operator=(const CMap& cmap) { |
---|
1238 | Parent::operator=(cmap); |
---|
1239 | return *this; |
---|
1240 | } |
---|
1241 | }; |
---|
1242 | |
---|
1243 | template <typename V> |
---|
1244 | class ArcMap |
---|
1245 | : public SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
---|
1246 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, ArcMap<V>)> { |
---|
1247 | typedef SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
---|
1248 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, ArcMap<V>)> Parent; |
---|
1249 | |
---|
1250 | public: |
---|
1251 | typedef V Value; |
---|
1252 | |
---|
1253 | ArcMap(const SubGraphBase<GR, NF, EF, false>& adaptor) |
---|
1254 | : Parent(adaptor) {} |
---|
1255 | ArcMap(const SubGraphBase<GR, NF, EF, false>& adaptor, const V& value) |
---|
1256 | : Parent(adaptor, value) {} |
---|
1257 | |
---|
1258 | private: |
---|
1259 | ArcMap& operator=(const ArcMap& cmap) { |
---|
1260 | return operator=<ArcMap>(cmap); |
---|
1261 | } |
---|
1262 | |
---|
1263 | template <typename CMap> |
---|
1264 | ArcMap& operator=(const CMap& cmap) { |
---|
1265 | Parent::operator=(cmap); |
---|
1266 | return *this; |
---|
1267 | } |
---|
1268 | }; |
---|
1269 | |
---|
1270 | template <typename V> |
---|
1271 | class EdgeMap |
---|
1272 | : public SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
---|
1273 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, EdgeMap<V>)> { |
---|
1274 | typedef SubMapExtender<SubGraphBase<GR, NF, EF, false>, |
---|
1275 | LEMON_SCOPE_FIX(GraphAdaptorBase<GR>, EdgeMap<V>)> Parent; |
---|
1276 | |
---|
1277 | public: |
---|
1278 | typedef V Value; |
---|
1279 | |
---|
1280 | EdgeMap(const SubGraphBase<GR, NF, EF, false>& adaptor) |
---|
1281 | : Parent(adaptor) {} |
---|
1282 | |
---|
1283 | EdgeMap(const SubGraphBase<GR, NF, EF, false>& adaptor, const V& value) |
---|
1284 | : Parent(adaptor, value) {} |
---|
1285 | |
---|
1286 | private: |
---|
1287 | EdgeMap& operator=(const EdgeMap& cmap) { |
---|
1288 | return operator=<EdgeMap>(cmap); |
---|
1289 | } |
---|
1290 | |
---|
1291 | template <typename CMap> |
---|
1292 | EdgeMap& operator=(const CMap& cmap) { |
---|
1293 | Parent::operator=(cmap); |
---|
1294 | return *this; |
---|
1295 | } |
---|
1296 | }; |
---|
1297 | |
---|
1298 | }; |
---|
1299 | |
---|
1300 | /// \ingroup graph_adaptors |
---|
1301 | /// |
---|
1302 | /// \brief Adaptor class for hiding nodes and edges in an undirected |
---|
1303 | /// graph. |
---|
1304 | /// |
---|
1305 | /// SubGraph can be used for hiding nodes and edges in a graph. |
---|
1306 | /// A \c bool node map and a \c bool edge map must be specified, which |
---|
1307 | /// define the filters for nodes and edges. |
---|
1308 | /// Only the nodes and edges with \c true filter value are |
---|
1309 | /// shown in the subgraph. The edges that are incident to hidden |
---|
1310 | /// nodes are also filtered out. |
---|
1311 | /// This adaptor conforms to the \ref concepts::Graph "Graph" concept. |
---|
1312 | /// |
---|
1313 | /// The adapted graph can also be modified through this adaptor |
---|
1314 | /// by adding or removing nodes or edges, unless the \c GR template |
---|
1315 | /// parameter is set to be \c const. |
---|
1316 | /// |
---|
1317 | /// \tparam GR The type of the adapted graph. |
---|
1318 | /// It must conform to the \ref concepts::Graph "Graph" concept. |
---|
1319 | /// It can also be specified to be \c const. |
---|
1320 | /// \tparam NF The type of the node filter map. |
---|
1321 | /// It must be a \c bool (or convertible) node map of the |
---|
1322 | /// adapted graph. The default type is |
---|
1323 | /// \ref concepts::Graph::NodeMap "GR::NodeMap<bool>". |
---|
1324 | /// \tparam EF The type of the edge filter map. |
---|
1325 | /// It must be a \c bool (or convertible) edge map of the |
---|
1326 | /// adapted graph. The default type is |
---|
1327 | /// \ref concepts::Graph::EdgeMap "GR::EdgeMap<bool>". |
---|
1328 | /// |
---|
1329 | /// \note The \c Node, \c Edge and \c Arc types of this adaptor and the |
---|
1330 | /// adapted graph are convertible to each other. |
---|
1331 | /// |
---|
1332 | /// \see FilterNodes |
---|
1333 | /// \see FilterEdges |
---|
1334 | #ifdef DOXYGEN |
---|
1335 | template<typename GR, typename NF, typename EF> |
---|
1336 | class SubGraph { |
---|
1337 | #else |
---|
1338 | template<typename GR, |
---|
1339 | typename NF = typename GR::template NodeMap<bool>, |
---|
1340 | typename EF = typename GR::template EdgeMap<bool> > |
---|
1341 | class SubGraph : |
---|
1342 | public GraphAdaptorExtender<SubGraphBase<GR, NF, EF, true> > { |
---|
1343 | #endif |
---|
1344 | public: |
---|
1345 | /// The type of the adapted graph. |
---|
1346 | typedef GR Graph; |
---|
1347 | /// The type of the node filter map. |
---|
1348 | typedef NF NodeFilterMap; |
---|
1349 | /// The type of the edge filter map. |
---|
1350 | typedef EF EdgeFilterMap; |
---|
1351 | |
---|
1352 | typedef GraphAdaptorExtender<SubGraphBase<GR, NF, EF, true> > |
---|
1353 | Parent; |
---|
1354 | |
---|
1355 | typedef typename Parent::Node Node; |
---|
1356 | typedef typename Parent::Edge Edge; |
---|
1357 | |
---|
1358 | protected: |
---|
1359 | SubGraph() { } |
---|
1360 | public: |
---|
1361 | |
---|
1362 | /// \brief Constructor |
---|
1363 | /// |
---|
1364 | /// Creates a subgraph for the given graph with the given node |
---|
1365 | /// and edge filter maps. |
---|
1366 | SubGraph(GR& graph, NF& node_filter, EF& edge_filter) { |
---|
1367 | this->initialize(graph, node_filter, edge_filter); |
---|
1368 | } |
---|
1369 | |
---|
1370 | /// \brief Sets the status of the given node |
---|
1371 | /// |
---|
1372 | /// This function sets the status of the given node. |
---|
1373 | /// It is done by simply setting the assigned value of \c n |
---|
1374 | /// to \c v in the node filter map. |
---|
1375 | void status(const Node& n, bool v) const { Parent::status(n, v); } |
---|
1376 | |
---|
1377 | /// \brief Sets the status of the given edge |
---|
1378 | /// |
---|
1379 | /// This function sets the status of the given edge. |
---|
1380 | /// It is done by simply setting the assigned value of \c e |
---|
1381 | /// to \c v in the edge filter map. |
---|
1382 | void status(const Edge& e, bool v) const { Parent::status(e, v); } |
---|
1383 | |
---|
1384 | /// \brief Returns the status of the given node |
---|
1385 | /// |
---|
1386 | /// This function returns the status of the given node. |
---|
1387 | /// It is \c true if the given node is enabled (i.e. not hidden). |
---|
1388 | bool status(const Node& n) const { return Parent::status(n); } |
---|
1389 | |
---|
1390 | /// \brief Returns the status of the given edge |
---|
1391 | /// |
---|
1392 | /// This function returns the status of the given edge. |
---|
1393 | /// It is \c true if the given edge is enabled (i.e. not hidden). |
---|
1394 | bool status(const Edge& e) const { return Parent::status(e); } |
---|
1395 | |
---|
1396 | /// \brief Disables the given node |
---|
1397 | /// |
---|
1398 | /// This function disables the given node in the subdigraph, |
---|
1399 | /// so the iteration jumps over it. |
---|
1400 | /// It is the same as \ref status() "status(n, false)". |
---|
1401 | void disable(const Node& n) const { Parent::status(n, false); } |
---|
1402 | |
---|
1403 | /// \brief Disables the given edge |
---|
1404 | /// |
---|
1405 | /// This function disables the given edge in the subgraph, |
---|
1406 | /// so the iteration jumps over it. |
---|
1407 | /// It is the same as \ref status() "status(e, false)". |
---|
1408 | void disable(const Edge& e) const { Parent::status(e, false); } |
---|
1409 | |
---|
1410 | /// \brief Enables the given node |
---|
1411 | /// |
---|
1412 | /// This function enables the given node in the subdigraph. |
---|
1413 | /// It is the same as \ref status() "status(n, true)". |
---|
1414 | void enable(const Node& n) const { Parent::status(n, true); } |
---|
1415 | |
---|
1416 | /// \brief Enables the given edge |
---|
1417 | /// |
---|
1418 | /// This function enables the given edge in the subgraph. |
---|
1419 | /// It is the same as \ref status() "status(e, true)". |
---|
1420 | void enable(const Edge& e) const { Parent::status(e, true); } |
---|
1421 | |
---|
1422 | }; |
---|
1423 | |
---|
1424 | /// \brief Returns a read-only SubGraph adaptor |
---|
1425 | /// |
---|
1426 | /// This function just returns a read-only \ref SubGraph adaptor. |
---|
1427 | /// \ingroup graph_adaptors |
---|
1428 | /// \relates SubGraph |
---|
1429 | template<typename GR, typename NF, typename EF> |
---|
1430 | SubGraph<const GR, NF, EF> |
---|
1431 | subGraph(const GR& graph, NF& node_filter, EF& edge_filter) { |
---|
1432 | return SubGraph<const GR, NF, EF> |
---|
1433 | (graph, node_filter, edge_filter); |
---|
1434 | } |
---|
1435 | |
---|
1436 | template<typename GR, typename NF, typename EF> |
---|
1437 | SubGraph<const GR, const NF, EF> |
---|
1438 | subGraph(const GR& graph, const NF& node_filter, EF& edge_filter) { |
---|
1439 | return SubGraph<const GR, const NF, EF> |
---|
1440 | (graph, node_filter, edge_filter); |
---|
1441 | } |
---|
1442 | |
---|
1443 | template<typename GR, typename NF, typename EF> |
---|
1444 | SubGraph<const GR, NF, const EF> |
---|
1445 | subGraph(const GR& graph, NF& node_filter, const EF& edge_filter) { |
---|
1446 | return SubGraph<const GR, NF, const EF> |
---|
1447 | (graph, node_filter, edge_filter); |
---|
1448 | } |
---|
1449 | |
---|
1450 | template<typename GR, typename NF, typename EF> |
---|
1451 | SubGraph<const GR, const NF, const EF> |
---|
1452 | subGraph(const GR& graph, const NF& node_filter, const EF& edge_filter) { |
---|
1453 | return SubGraph<const GR, const NF, const EF> |
---|
1454 | (graph, node_filter, edge_filter); |
---|
1455 | } |
---|
1456 | |
---|
1457 | |
---|
1458 | /// \ingroup graph_adaptors |
---|
1459 | /// |
---|
1460 | /// \brief Adaptor class for hiding nodes in a digraph or a graph. |
---|
1461 | /// |
---|
1462 | /// FilterNodes adaptor can be used for hiding nodes in a digraph or a |
---|
1463 | /// graph. A \c bool node map must be specified, which defines the filter |
---|
1464 | /// for the nodes. Only the nodes with \c true filter value and the |
---|
1465 | /// arcs/edges incident to nodes both with \c true filter value are shown |
---|
1466 | /// in the subgraph. This adaptor conforms to the \ref concepts::Digraph |
---|
1467 | /// "Digraph" concept or the \ref concepts::Graph "Graph" concept |
---|
1468 | /// depending on the \c GR template parameter. |
---|
1469 | /// |
---|
1470 | /// The adapted (di)graph can also be modified through this adaptor |
---|
1471 | /// by adding or removing nodes or arcs/edges, unless the \c GR template |
---|
1472 | /// parameter is set to be \c const. |
---|
1473 | /// |
---|
1474 | /// \tparam GR The type of the adapted digraph or graph. |
---|
1475 | /// It must conform to the \ref concepts::Digraph "Digraph" concept |
---|
1476 | /// or the \ref concepts::Graph "Graph" concept. |
---|
1477 | /// It can also be specified to be \c const. |
---|
1478 | /// \tparam NF The type of the node filter map. |
---|
1479 | /// It must be a \c bool (or convertible) node map of the |
---|
1480 | /// adapted (di)graph. The default type is |
---|
1481 | /// \ref concepts::Graph::NodeMap "GR::NodeMap<bool>". |
---|
1482 | /// |
---|
1483 | /// \note The \c Node and <tt>Arc/Edge</tt> types of this adaptor and the |
---|
1484 | /// adapted (di)graph are convertible to each other. |
---|
1485 | #ifdef DOXYGEN |
---|
1486 | template<typename GR, typename NF> |
---|
1487 | class FilterNodes { |
---|
1488 | #else |
---|
1489 | template<typename GR, |
---|
1490 | typename NF = typename GR::template NodeMap<bool>, |
---|
1491 | typename Enable = void> |
---|
1492 | class FilterNodes : |
---|
1493 | public DigraphAdaptorExtender< |
---|
1494 | SubDigraphBase<GR, NF, ConstMap<typename GR::Arc, Const<bool, true> >, |
---|
1495 | true> > { |
---|
1496 | #endif |
---|
1497 | typedef DigraphAdaptorExtender< |
---|
1498 | SubDigraphBase<GR, NF, ConstMap<typename GR::Arc, Const<bool, true> >, |
---|
1499 | true> > Parent; |
---|
1500 | |
---|
1501 | public: |
---|
1502 | |
---|
1503 | typedef GR Digraph; |
---|
1504 | typedef NF NodeFilterMap; |
---|
1505 | |
---|
1506 | typedef typename Parent::Node Node; |
---|
1507 | |
---|
1508 | protected: |
---|
1509 | ConstMap<typename Digraph::Arc, Const<bool, true> > const_true_map; |
---|
1510 | |
---|
1511 | FilterNodes() : const_true_map() {} |
---|
1512 | |
---|
1513 | public: |
---|
1514 | |
---|
1515 | /// \brief Constructor |
---|
1516 | /// |
---|
1517 | /// Creates a subgraph for the given digraph or graph with the |
---|
1518 | /// given node filter map. |
---|
1519 | FilterNodes(GR& graph, NF& node_filter) |
---|
1520 | : Parent(), const_true_map() |
---|
1521 | { |
---|
1522 | Parent::initialize(graph, node_filter, const_true_map); |
---|
1523 | } |
---|
1524 | |
---|
1525 | /// \brief Sets the status of the given node |
---|
1526 | /// |
---|
1527 | /// This function sets the status of the given node. |
---|
1528 | /// It is done by simply setting the assigned value of \c n |
---|
1529 | /// to \c v in the node filter map. |
---|
1530 | void status(const Node& n, bool v) const { Parent::status(n, v); } |
---|
1531 | |
---|
1532 | /// \brief Returns the status of the given node |
---|
1533 | /// |
---|
1534 | /// This function returns the status of the given node. |
---|
1535 | /// It is \c true if the given node is enabled (i.e. not hidden). |
---|
1536 | bool status(const Node& n) const { return Parent::status(n); } |
---|
1537 | |
---|
1538 | /// \brief Disables the given node |
---|
1539 | /// |
---|
1540 | /// This function disables the given node, so the iteration |
---|
1541 | /// jumps over it. |
---|
1542 | /// It is the same as \ref status() "status(n, false)". |
---|
1543 | void disable(const Node& n) const { Parent::status(n, false); } |
---|
1544 | |
---|
1545 | /// \brief Enables the given node |
---|
1546 | /// |
---|
1547 | /// This function enables the given node. |
---|
1548 | /// It is the same as \ref status() "status(n, true)". |
---|
1549 | void enable(const Node& n) const { Parent::status(n, true); } |
---|
1550 | |
---|
1551 | }; |
---|
1552 | |
---|
1553 | template<typename GR, typename NF> |
---|
1554 | class FilterNodes<GR, NF, |
---|
1555 | typename enable_if<UndirectedTagIndicator<GR> >::type> : |
---|
1556 | public GraphAdaptorExtender< |
---|
1557 | SubGraphBase<GR, NF, ConstMap<typename GR::Edge, Const<bool, true> >, |
---|
1558 | true> > { |
---|
1559 | |
---|
1560 | typedef GraphAdaptorExtender< |
---|
1561 | SubGraphBase<GR, NF, ConstMap<typename GR::Edge, Const<bool, true> >, |
---|
1562 | true> > Parent; |
---|
1563 | |
---|
1564 | public: |
---|
1565 | |
---|
1566 | typedef GR Graph; |
---|
1567 | typedef NF NodeFilterMap; |
---|
1568 | |
---|
1569 | typedef typename Parent::Node Node; |
---|
1570 | |
---|
1571 | protected: |
---|
1572 | ConstMap<typename GR::Edge, Const<bool, true> > const_true_map; |
---|
1573 | |
---|
1574 | FilterNodes() : const_true_map() {} |
---|
1575 | |
---|
1576 | public: |
---|
1577 | |
---|
1578 | FilterNodes(GR& graph, NodeFilterMap& node_filter) : |
---|
1579 | Parent(), const_true_map() { |
---|
1580 | Parent::initialize(graph, node_filter, const_true_map); |
---|
1581 | } |
---|
1582 | |
---|
1583 | void status(const Node& n, bool v) const { Parent::status(n, v); } |
---|
1584 | bool status(const Node& n) const { return Parent::status(n); } |
---|
1585 | void disable(const Node& n) const { Parent::status(n, false); } |
---|
1586 | void enable(const Node& n) const { Parent::status(n, true); } |
---|
1587 | |
---|
1588 | }; |
---|
1589 | |
---|
1590 | |
---|
1591 | /// \brief Returns a read-only FilterNodes adaptor |
---|
1592 | /// |
---|
1593 | /// This function just returns a read-only \ref FilterNodes adaptor. |
---|
1594 | /// \ingroup graph_adaptors |
---|
1595 | /// \relates FilterNodes |
---|
1596 | template<typename GR, typename NF> |
---|
1597 | FilterNodes<const GR, NF> |
---|
1598 | filterNodes(const GR& graph, NF& node_filter) { |
---|
1599 | return FilterNodes<const GR, NF>(graph, node_filter); |
---|
1600 | } |
---|
1601 | |
---|
1602 | template<typename GR, typename NF> |
---|
1603 | FilterNodes<const GR, const NF> |
---|
1604 | filterNodes(const GR& graph, const NF& node_filter) { |
---|
1605 | return FilterNodes<const GR, const NF>(graph, node_filter); |
---|
1606 | } |
---|
1607 | |
---|
1608 | /// \ingroup graph_adaptors |
---|
1609 | /// |
---|
1610 | /// \brief Adaptor class for hiding arcs in a digraph. |
---|
1611 | /// |
---|
1612 | /// FilterArcs adaptor can be used for hiding arcs in a digraph. |
---|
1613 | /// A \c bool arc map must be specified, which defines the filter for |
---|
1614 | /// the arcs. Only the arcs with \c true filter value are shown in the |
---|
1615 | /// subdigraph. This adaptor conforms to the \ref concepts::Digraph |
---|
1616 | /// "Digraph" concept. |
---|
1617 | /// |
---|
1618 | /// The adapted digraph can also be modified through this adaptor |
---|
1619 | /// by adding or removing nodes or arcs, unless the \c GR template |
---|
1620 | /// parameter is set to be \c const. |
---|
1621 | /// |
---|
1622 | /// \tparam DGR The type of the adapted digraph. |
---|
1623 | /// It must conform to the \ref concepts::Digraph "Digraph" concept. |
---|
1624 | /// It can also be specified to be \c const. |
---|
1625 | /// \tparam AF The type of the arc filter map. |
---|
1626 | /// It must be a \c bool (or convertible) arc map of the |
---|
1627 | /// adapted digraph. The default type is |
---|
1628 | /// \ref concepts::Digraph::ArcMap "DGR::ArcMap<bool>". |
---|
1629 | /// |
---|
1630 | /// \note The \c Node and \c Arc types of this adaptor and the adapted |
---|
1631 | /// digraph are convertible to each other. |
---|
1632 | #ifdef DOXYGEN |
---|
1633 | template<typename DGR, |
---|
1634 | typename AF> |
---|
1635 | class FilterArcs { |
---|
1636 | #else |
---|
1637 | template<typename DGR, |
---|
1638 | typename AF = typename DGR::template ArcMap<bool> > |
---|
1639 | class FilterArcs : |
---|
1640 | public DigraphAdaptorExtender< |
---|
1641 | SubDigraphBase<DGR, ConstMap<typename DGR::Node, Const<bool, true> >, |
---|
1642 | AF, false> > { |
---|
1643 | #endif |
---|
1644 | typedef DigraphAdaptorExtender< |
---|
1645 | SubDigraphBase<DGR, ConstMap<typename DGR::Node, Const<bool, true> >, |
---|
1646 | AF, false> > Parent; |
---|
1647 | |
---|
1648 | public: |
---|
1649 | |
---|
1650 | /// The type of the adapted digraph. |
---|
1651 | typedef DGR Digraph; |
---|
1652 | /// The type of the arc filter map. |
---|
1653 | typedef AF ArcFilterMap; |
---|
1654 | |
---|
1655 | typedef typename Parent::Arc Arc; |
---|
1656 | |
---|
1657 | protected: |
---|
1658 | ConstMap<typename DGR::Node, Const<bool, true> > const_true_map; |
---|
1659 | |
---|
1660 | FilterArcs() : const_true_map() {} |
---|
1661 | |
---|
1662 | public: |
---|
1663 | |
---|
1664 | /// \brief Constructor |
---|
1665 | /// |
---|
1666 | /// Creates a subdigraph for the given digraph with the given arc |
---|
1667 | /// filter map. |
---|
1668 | FilterArcs(DGR& digraph, ArcFilterMap& arc_filter) |
---|
1669 | : Parent(), const_true_map() { |
---|
1670 | Parent::initialize(digraph, const_true_map, arc_filter); |
---|
1671 | } |
---|
1672 | |
---|
1673 | /// \brief Sets the status of the given arc |
---|
1674 | /// |
---|
1675 | /// This function sets the status of the given arc. |
---|
1676 | /// It is done by simply setting the assigned value of \c a |
---|
1677 | /// to \c v in the arc filter map. |
---|
1678 | void status(const Arc& a, bool v) const { Parent::status(a, v); } |
---|
1679 | |
---|
1680 | /// \brief Returns the status of the given arc |
---|
1681 | /// |
---|
1682 | /// This function returns the status of the given arc. |
---|
1683 | /// It is \c true if the given arc is enabled (i.e. not hidden). |
---|
1684 | bool status(const Arc& a) const { return Parent::status(a); } |
---|
1685 | |
---|
1686 | /// \brief Disables the given arc |
---|
1687 | /// |
---|
1688 | /// This function disables the given arc in the subdigraph, |
---|
1689 | /// so the iteration jumps over it. |
---|
1690 | /// It is the same as \ref status() "status(a, false)". |
---|
1691 | void disable(const Arc& a) const { Parent::status(a, false); } |
---|
1692 | |
---|
1693 | /// \brief Enables the given arc |
---|
1694 | /// |
---|
1695 | /// This function enables the given arc in the subdigraph. |
---|
1696 | /// It is the same as \ref status() "status(a, true)". |
---|
1697 | void enable(const Arc& a) const { Parent::status(a, true); } |
---|
1698 | |
---|
1699 | }; |
---|
1700 | |
---|
1701 | /// \brief Returns a read-only FilterArcs adaptor |
---|
1702 | /// |
---|
1703 | /// This function just returns a read-only \ref FilterArcs adaptor. |
---|
1704 | /// \ingroup graph_adaptors |
---|
1705 | /// \relates FilterArcs |
---|
1706 | template<typename DGR, typename AF> |
---|
1707 | FilterArcs<const DGR, AF> |
---|
1708 | filterArcs(const DGR& digraph, AF& arc_filter) { |
---|
1709 | return FilterArcs<const DGR, AF>(digraph, arc_filter); |
---|
1710 | } |
---|
1711 | |
---|
1712 | template<typename DGR, typename AF> |
---|
1713 | FilterArcs<const DGR, const AF> |
---|
1714 | filterArcs(const DGR& digraph, const AF& arc_filter) { |
---|
1715 | return FilterArcs<const DGR, const AF>(digraph, arc_filter); |
---|
1716 | } |
---|
1717 | |
---|
1718 | /// \ingroup graph_adaptors |
---|
1719 | /// |
---|
1720 | /// \brief Adaptor class for hiding edges in a graph. |
---|
1721 | /// |
---|
1722 | /// FilterEdges adaptor can be used for hiding edges in a graph. |
---|
1723 | /// A \c bool edge map must be specified, which defines the filter for |
---|
1724 | /// the edges. Only the edges with \c true filter value are shown in the |
---|
1725 | /// subgraph. This adaptor conforms to the \ref concepts::Graph |
---|
1726 | /// "Graph" concept. |
---|
1727 | /// |
---|
1728 | /// The adapted graph can also be modified through this adaptor |
---|
1729 | /// by adding or removing nodes or edges, unless the \c GR template |
---|
1730 | /// parameter is set to be \c const. |
---|
1731 | /// |
---|
1732 | /// \tparam GR The type of the adapted graph. |
---|
1733 | /// It must conform to the \ref concepts::Graph "Graph" concept. |
---|
1734 | /// It can also be specified to be \c const. |
---|
1735 | /// \tparam EF The type of the edge filter map. |
---|
1736 | /// It must be a \c bool (or convertible) edge map of the |
---|
1737 | /// adapted graph. The default type is |
---|
1738 | /// \ref concepts::Graph::EdgeMap "GR::EdgeMap<bool>". |
---|
1739 | /// |
---|
1740 | /// \note The \c Node, \c Edge and \c Arc types of this adaptor and the |
---|
1741 | /// adapted graph are convertible to each other. |
---|
1742 | #ifdef DOXYGEN |
---|
1743 | template<typename GR, |
---|
1744 | typename EF> |
---|
1745 | class FilterEdges { |
---|
1746 | #else |
---|
1747 | template<typename GR, |
---|
1748 | typename EF = typename GR::template EdgeMap<bool> > |
---|
1749 | class FilterEdges : |
---|
1750 | public GraphAdaptorExtender< |
---|
1751 | SubGraphBase<GR, ConstMap<typename GR::Node, Const<bool, true> >, |
---|
1752 | EF, false> > { |
---|
1753 | #endif |
---|
1754 | typedef GraphAdaptorExtender< |
---|
1755 | SubGraphBase<GR, ConstMap<typename GR::Node, Const<bool, true > >, |
---|
1756 | EF, false> > Parent; |
---|
1757 | |
---|
1758 | public: |
---|
1759 | |
---|
1760 | /// The type of the adapted graph. |
---|
1761 | typedef GR Graph; |
---|
1762 | /// The type of the edge filter map. |
---|
1763 | typedef EF EdgeFilterMap; |
---|
1764 | |
---|
1765 | typedef typename Parent::Edge Edge; |
---|
1766 | |
---|
1767 | protected: |
---|
1768 | ConstMap<typename GR::Node, Const<bool, true> > const_true_map; |
---|
1769 | |
---|
1770 | FilterEdges() : const_true_map(true) { |
---|
1771 | Parent::setNodeFilterMap(const_true_map); |
---|
1772 | } |
---|
1773 | |
---|
1774 | public: |
---|
1775 | |
---|
1776 | /// \brief Constructor |
---|
1777 | /// |
---|
1778 | /// Creates a subgraph for the given graph with the given edge |
---|
1779 | /// filter map. |
---|
1780 | FilterEdges(GR& graph, EF& edge_filter) |
---|
1781 | : Parent(), const_true_map() { |
---|
1782 | Parent::initialize(graph, const_true_map, edge_filter); |
---|
1783 | } |
---|
1784 | |
---|
1785 | /// \brief Sets the status of the given edge |
---|
1786 | /// |
---|
1787 | /// This function sets the status of the given edge. |
---|
1788 | /// It is done by simply setting the assigned value of \c e |
---|
1789 | /// to \c v in the edge filter map. |
---|
1790 | void status(const Edge& e, bool v) const { Parent::status(e, v); } |
---|
1791 | |
---|
1792 | /// \brief Returns the status of the given edge |
---|
1793 | /// |
---|
1794 | /// This function returns the status of the given edge. |
---|
1795 | /// It is \c true if the given edge is enabled (i.e. not hidden). |
---|
1796 | bool status(const Edge& e) const { return Parent::status(e); } |
---|
1797 | |
---|
1798 | /// \brief Disables the given edge |
---|
1799 | /// |
---|
1800 | /// This function disables the given edge in the subgraph, |
---|
1801 | /// so the iteration jumps over it. |
---|
1802 | /// It is the same as \ref status() "status(e, false)". |
---|
1803 | void disable(const Edge& e) const { Parent::status(e, false); } |
---|
1804 | |
---|
1805 | /// \brief Enables the given edge |
---|
1806 | /// |
---|
1807 | /// This function enables the given edge in the subgraph. |
---|
1808 | /// It is the same as \ref status() "status(e, true)". |
---|
1809 | void enable(const Edge& e) const { Parent::status(e, true); } |
---|
1810 | |
---|
1811 | }; |
---|
1812 | |
---|
1813 | /// \brief Returns a read-only FilterEdges adaptor |
---|
1814 | /// |
---|
1815 | /// This function just returns a read-only \ref FilterEdges adaptor. |
---|
1816 | /// \ingroup graph_adaptors |
---|
1817 | /// \relates FilterEdges |
---|
1818 | template<typename GR, typename EF> |
---|
1819 | FilterEdges<const GR, EF> |
---|
1820 | filterEdges(const GR& graph, EF& edge_filter) { |
---|
1821 | return FilterEdges<const GR, EF>(graph, edge_filter); |
---|
1822 | } |
---|
1823 | |
---|
1824 | template<typename GR, typename EF> |
---|
1825 | FilterEdges<const GR, const EF> |
---|
1826 | filterEdges(const GR& graph, const EF& edge_filter) { |
---|
1827 | return FilterEdges<const GR, const EF>(graph, edge_filter); |
---|
1828 | } |
---|
1829 | |
---|
1830 | |
---|
1831 | template <typename DGR> |
---|
1832 | class UndirectorBase { |
---|
1833 | public: |
---|
1834 | typedef DGR Digraph; |
---|
1835 | typedef UndirectorBase Adaptor; |
---|
1836 | |
---|
1837 | typedef True UndirectedTag; |
---|
1838 | |
---|
1839 | typedef typename Digraph::Arc Edge; |
---|
1840 | typedef typename Digraph::Node Node; |
---|
1841 | |
---|
1842 | class Arc { |
---|
1843 | friend class UndirectorBase; |
---|
1844 | protected: |
---|
1845 | Edge _edge; |
---|
1846 | bool _forward; |
---|
1847 | |
---|
1848 | Arc(const Edge& edge, bool forward) |
---|
1849 | : _edge(edge), _forward(forward) {} |
---|
1850 | |
---|
1851 | public: |
---|
1852 | Arc() {} |
---|
1853 | |
---|
1854 | Arc(Invalid) : _edge(INVALID), _forward(true) {} |
---|
1855 | |
---|
1856 | operator const Edge&() const { return _edge; } |
---|
1857 | |
---|
1858 | bool operator==(const Arc &other) const { |
---|
1859 | return _forward == other._forward && _edge == other._edge; |
---|
1860 | } |
---|
1861 | bool operator!=(const Arc &other) const { |
---|
1862 | return _forward != other._forward || _edge != other._edge; |
---|
1863 | } |
---|
1864 | bool operator<(const Arc &other) const { |
---|
1865 | return _forward < other._forward || |
---|
1866 | (_forward == other._forward && _edge < other._edge); |
---|
1867 | } |
---|
1868 | }; |
---|
1869 | |
---|
1870 | void first(Node& n) const { |
---|
1871 | _digraph->first(n); |
---|
1872 | } |
---|
1873 | |
---|
1874 | void next(Node& n) const { |
---|
1875 | _digraph->next(n); |
---|
1876 | } |
---|
1877 | |
---|
1878 | void first(Arc& a) const { |
---|
1879 | _digraph->first(a._edge); |
---|
1880 | a._forward = true; |
---|
1881 | } |
---|
1882 | |
---|
1883 | void next(Arc& a) const { |
---|
1884 | if (a._forward) { |
---|
1885 | a._forward = false; |
---|
1886 | } else { |
---|
1887 | _digraph->next(a._edge); |
---|
1888 | a._forward = true; |
---|
1889 | } |
---|
1890 | } |
---|
1891 | |
---|
1892 | void first(Edge& e) const { |
---|
1893 | _digraph->first(e); |
---|
1894 | } |
---|
1895 | |
---|
1896 | void next(Edge& e) const { |
---|
1897 | _digraph->next(e); |
---|
1898 | } |
---|
1899 | |
---|
1900 | void firstOut(Arc& a, const Node& n) const { |
---|
1901 | _digraph->firstIn(a._edge, n); |
---|
1902 | if (a._edge != INVALID ) { |
---|
1903 | a._forward = false; |
---|
1904 | } else { |
---|
1905 | _digraph->firstOut(a._edge, n); |
---|
1906 | a._forward = true; |
---|
1907 | } |
---|
1908 | } |
---|
1909 | void nextOut(Arc &a) const { |
---|
1910 | if (!a._forward) { |
---|
1911 | Node n = _digraph->target(a._edge); |
---|
1912 | _digraph->nextIn(a._edge); |
---|
1913 | if (a._edge == INVALID) { |
---|
1914 | _digraph->firstOut(a._edge, n); |
---|
1915 | a._forward = true; |
---|
1916 | } |
---|
1917 | } |
---|
1918 | else { |
---|
1919 | _digraph->nextOut(a._edge); |
---|
1920 | } |
---|
1921 | } |
---|
1922 | |
---|
1923 | void firstIn(Arc &a, const Node &n) const { |
---|
1924 | _digraph->firstOut(a._edge, n); |
---|
1925 | if (a._edge != INVALID ) { |
---|
1926 | a._forward = false; |
---|
1927 | } else { |
---|
1928 | _digraph->firstIn(a._edge, n); |
---|
1929 | a._forward = true; |
---|
1930 | } |
---|
1931 | } |
---|
1932 | void nextIn(Arc &a) const { |
---|
1933 | if (!a._forward) { |
---|
1934 | Node n = _digraph->source(a._edge); |
---|
1935 | _digraph->nextOut(a._edge); |
---|
1936 | if (a._edge == INVALID ) { |
---|
1937 | _digraph->firstIn(a._edge, n); |
---|
1938 | a._forward = true; |
---|
1939 | } |
---|
1940 | } |
---|
1941 | else { |
---|
1942 | _digraph->nextIn(a._edge); |
---|
1943 | } |
---|
1944 | } |
---|
1945 | |
---|
1946 | void firstInc(Edge &e, bool &d, const Node &n) const { |
---|
1947 | d = true; |
---|
1948 | _digraph->firstOut(e, n); |
---|
1949 | if (e != INVALID) return; |
---|
1950 | d = false; |
---|
1951 | _digraph->firstIn(e, n); |
---|
1952 | } |
---|
1953 | |
---|
1954 | void nextInc(Edge &e, bool &d) const { |
---|
1955 | if (d) { |
---|
1956 | Node s = _digraph->source(e); |
---|
1957 | _digraph->nextOut(e); |
---|
1958 | if (e != INVALID) return; |
---|
1959 | d = false; |
---|
1960 | _digraph->firstIn(e, s); |
---|
1961 | } else { |
---|
1962 | _digraph->nextIn(e); |
---|
1963 | } |
---|
1964 | } |
---|
1965 | |
---|
1966 | Node u(const Edge& e) const { |
---|
1967 | return _digraph->source(e); |
---|
1968 | } |
---|
1969 | |
---|
1970 | Node v(const Edge& e) const { |
---|
1971 | return _digraph->target(e); |
---|
1972 | } |
---|
1973 | |
---|
1974 | Node source(const Arc &a) const { |
---|
1975 | return a._forward ? _digraph->source(a._edge) : _digraph->target(a._edge); |
---|
1976 | } |
---|
1977 | |
---|
1978 | Node target(const Arc &a) const { |
---|
1979 | return a._forward ? _digraph->target(a._edge) : _digraph->source(a._edge); |
---|
1980 | } |
---|
1981 | |
---|
1982 | static Arc direct(const Edge &e, bool d) { |
---|
1983 | return Arc(e, d); |
---|
1984 | } |
---|
1985 | |
---|
1986 | static bool direction(const Arc &a) { return a._forward; } |
---|
1987 | |
---|
1988 | Node nodeFromId(int ix) const { return _digraph->nodeFromId(ix); } |
---|
1989 | Arc arcFromId(int ix) const { |
---|
1990 | return direct(_digraph->arcFromId(ix >> 1), bool(ix & 1)); |
---|
1991 | } |
---|
1992 | Edge edgeFromId(int ix) const { return _digraph->arcFromId(ix); } |
---|
1993 | |
---|
1994 | int id(const Node &n) const { return _digraph->id(n); } |
---|
1995 | int id(const Arc &a) const { |
---|
1996 | return (_digraph->id(a) << 1) | (a._forward ? 1 : 0); |
---|
1997 | } |
---|
1998 | int id(const Edge &e) const { return _digraph->id(e); } |
---|
1999 | |
---|
2000 | int maxNodeId() const { return _digraph->maxNodeId(); } |
---|
2001 | int maxArcId() const { return (_digraph->maxArcId() << 1) | 1; } |
---|
2002 | int maxEdgeId() const { return _digraph->maxArcId(); } |
---|
2003 | |
---|
2004 | Node addNode() { return _digraph->addNode(); } |
---|
2005 | Edge addEdge(const Node& u, const Node& v) { |
---|
2006 | return _digraph->addArc(u, v); |
---|
2007 | } |
---|
2008 | |
---|
2009 | void erase(const Node& i) { _digraph->erase(i); } |
---|
2010 | void erase(const Edge& i) { _digraph->erase(i); } |
---|
2011 | |
---|
2012 | void clear() { _digraph->clear(); } |
---|
2013 | |
---|
2014 | typedef NodeNumTagIndicator<Digraph> NodeNumTag; |
---|
2015 | int nodeNum() const { return _digraph->nodeNum(); } |
---|
2016 | |
---|
2017 | typedef ArcNumTagIndicator<Digraph> ArcNumTag; |
---|
2018 | int arcNum() const { return 2 * _digraph->arcNum(); } |
---|
2019 | |
---|
2020 | typedef ArcNumTag EdgeNumTag; |
---|
2021 | int edgeNum() const { return _digraph->arcNum(); } |
---|
2022 | |
---|
2023 | typedef FindArcTagIndicator<Digraph> FindArcTag; |
---|
2024 | Arc findArc(Node s, Node t, Arc p = INVALID) const { |
---|
2025 | if (p == INVALID) { |
---|
2026 | Edge arc = _digraph->findArc(s, t); |
---|
2027 | if (arc != INVALID) return direct(arc, true); |
---|
2028 | arc = _digraph->findArc(t, s); |
---|
2029 | if (arc != INVALID) return direct(arc, false); |
---|
2030 | } else if (direction(p)) { |
---|
2031 | Edge arc = _digraph->findArc(s, t, p); |
---|
2032 | if (arc != INVALID) return direct(arc, true); |
---|
2033 | arc = _digraph->findArc(t, s); |
---|
2034 | if (arc != INVALID) return direct(arc, false); |
---|
2035 | } else { |
---|
2036 | Edge arc = _digraph->findArc(t, s, p); |
---|
2037 | if (arc != INVALID) return direct(arc, false); |
---|
2038 | } |
---|
2039 | return INVALID; |
---|
2040 | } |
---|
2041 | |
---|
2042 | typedef FindArcTag FindEdgeTag; |
---|
2043 | Edge findEdge(Node s, Node t, Edge p = INVALID) const { |
---|
2044 | if (s != t) { |
---|
2045 | if (p == INVALID) { |
---|
2046 | Edge arc = _digraph->findArc(s, t); |
---|
2047 | if (arc != INVALID) return arc; |
---|
2048 | arc = _digraph->findArc(t, s); |
---|
2049 | if (arc != INVALID) return arc; |
---|
2050 | } else if (_digraph->source(p) == s) { |
---|
2051 | Edge arc = _digraph->findArc(s, t, p); |
---|
2052 | if (arc != INVALID) return arc; |
---|
2053 | arc = _digraph->findArc(t, s); |
---|
2054 | if (arc != INVALID) return arc; |
---|
2055 | } else { |
---|
2056 | Edge arc = _digraph->findArc(t, s, p); |
---|
2057 | if (arc != INVALID) return arc; |
---|
2058 | } |
---|
2059 | } else { |
---|
2060 | return _digraph->findArc(s, t, p); |
---|
2061 | } |
---|
2062 | return INVALID; |
---|
2063 | } |
---|
2064 | |
---|
2065 | private: |
---|
2066 | |
---|
2067 | template <typename V> |
---|
2068 | class ArcMapBase { |
---|
2069 | private: |
---|
2070 | |
---|
2071 | typedef typename DGR::template ArcMap<V> MapImpl; |
---|
2072 | |
---|
2073 | public: |
---|
2074 | |
---|
2075 | typedef typename MapTraits<MapImpl>::ReferenceMapTag ReferenceMapTag; |
---|
2076 | |
---|
2077 | typedef V Value; |
---|
2078 | typedef Arc Key; |
---|
2079 | typedef typename MapTraits<MapImpl>::ConstReturnValue ConstReturnValue; |
---|
2080 | typedef typename MapTraits<MapImpl>::ReturnValue ReturnValue; |
---|
2081 | typedef typename MapTraits<MapImpl>::ConstReturnValue ConstReference; |
---|
2082 | typedef typename MapTraits<MapImpl>::ReturnValue Reference; |
---|
2083 | |
---|
2084 | ArcMapBase(const UndirectorBase<DGR>& adaptor) : |
---|
2085 | _forward(*adaptor._digraph), _backward(*adaptor._digraph) {} |
---|
2086 | |
---|
2087 | ArcMapBase(const UndirectorBase<DGR>& adaptor, const V& value) |
---|
2088 | : _forward(*adaptor._digraph, value), |
---|
2089 | _backward(*adaptor._digraph, value) {} |
---|
2090 | |
---|
2091 | void set(const Arc& a, const V& value) { |
---|
2092 | if (direction(a)) { |
---|
2093 | _forward.set(a, value); |
---|
2094 | } else { |
---|
2095 | _backward.set(a, value); |
---|
2096 | } |
---|
2097 | } |
---|
2098 | |
---|
2099 | ConstReturnValue operator[](const Arc& a) const { |
---|
2100 | if (direction(a)) { |
---|
2101 | return _forward[a]; |
---|
2102 | } else { |
---|
2103 | return _backward[a]; |
---|
2104 | } |
---|
2105 | } |
---|
2106 | |
---|
2107 | ReturnValue operator[](const Arc& a) { |
---|
2108 | if (direction(a)) { |
---|
2109 | return _forward[a]; |
---|
2110 | } else { |
---|
2111 | return _backward[a]; |
---|
2112 | } |
---|
2113 | } |
---|
2114 | |
---|
2115 | protected: |
---|
2116 | |
---|
2117 | MapImpl _forward, _backward; |
---|
2118 | |
---|
2119 | }; |
---|
2120 | |
---|
2121 | public: |
---|
2122 | |
---|
2123 | template <typename V> |
---|
2124 | class NodeMap : public DGR::template NodeMap<V> { |
---|
2125 | typedef typename DGR::template NodeMap<V> Parent; |
---|
2126 | |
---|
2127 | public: |
---|
2128 | typedef V Value; |
---|
2129 | |
---|
2130 | explicit NodeMap(const UndirectorBase<DGR>& adaptor) |
---|
2131 | : Parent(*adaptor._digraph) {} |
---|
2132 | |
---|
2133 | NodeMap(const UndirectorBase<DGR>& adaptor, const V& value) |
---|
2134 | : Parent(*adaptor._digraph, value) { } |
---|
2135 | |
---|
2136 | private: |
---|
2137 | NodeMap& operator=(const NodeMap& cmap) { |
---|
2138 | return operator=<NodeMap>(cmap); |
---|
2139 | } |
---|
2140 | |
---|
2141 | template <typename CMap> |
---|
2142 | NodeMap& operator=(const CMap& cmap) { |
---|
2143 | Parent::operator=(cmap); |
---|
2144 | return *this; |
---|
2145 | } |
---|
2146 | |
---|
2147 | }; |
---|
2148 | |
---|
2149 | template <typename V> |
---|
2150 | class ArcMap |
---|
2151 | : public SubMapExtender<UndirectorBase<DGR>, ArcMapBase<V> > { |
---|
2152 | typedef SubMapExtender<UndirectorBase<DGR>, ArcMapBase<V> > Parent; |
---|
2153 | |
---|
2154 | public: |
---|
2155 | typedef V Value; |
---|
2156 | |
---|
2157 | explicit ArcMap(const UndirectorBase<DGR>& adaptor) |
---|
2158 | : Parent(adaptor) {} |
---|
2159 | |
---|
2160 | ArcMap(const UndirectorBase<DGR>& adaptor, const V& value) |
---|
2161 | : Parent(adaptor, value) {} |
---|
2162 | |
---|
2163 | private: |
---|
2164 | ArcMap& operator=(const ArcMap& cmap) { |
---|
2165 | return operator=<ArcMap>(cmap); |
---|
2166 | } |
---|
2167 | |
---|
2168 | template <typename CMap> |
---|
2169 | ArcMap& operator=(const CMap& cmap) { |
---|
2170 | Parent::operator=(cmap); |
---|
2171 | return *this; |
---|
2172 | } |
---|
2173 | }; |
---|
2174 | |
---|
2175 | template <typename V> |
---|
2176 | class EdgeMap : public Digraph::template ArcMap<V> { |
---|
2177 | typedef typename Digraph::template ArcMap<V> Parent; |
---|
2178 | |
---|
2179 | public: |
---|
2180 | typedef V Value; |
---|
2181 | |
---|
2182 | explicit EdgeMap(const UndirectorBase<DGR>& adaptor) |
---|
2183 | : Parent(*adaptor._digraph) {} |
---|
2184 | |
---|
2185 | EdgeMap(const UndirectorBase<DGR>& adaptor, const V& value) |
---|
2186 | : Parent(*adaptor._digraph, value) {} |
---|
2187 | |
---|
2188 | private: |
---|
2189 | EdgeMap& operator=(const EdgeMap& cmap) { |
---|
2190 | return operator=<EdgeMap>(cmap); |
---|
2191 | } |
---|
2192 | |
---|
2193 | template <typename CMap> |
---|
2194 | EdgeMap& operator=(const CMap& cmap) { |
---|
2195 | Parent::operator=(cmap); |
---|
2196 | return *this; |
---|
2197 | } |
---|
2198 | |
---|
2199 | }; |
---|
2200 | |
---|
2201 | typedef typename ItemSetTraits<DGR, Node>::ItemNotifier NodeNotifier; |
---|
2202 | NodeNotifier& notifier(Node) const { return _digraph->notifier(Node()); } |
---|
2203 | |
---|
2204 | typedef typename ItemSetTraits<DGR, Edge>::ItemNotifier EdgeNotifier; |
---|
2205 | EdgeNotifier& notifier(Edge) const { return _digraph->notifier(Edge()); } |
---|
2206 | |
---|
2207 | typedef EdgeNotifier ArcNotifier; |
---|
2208 | ArcNotifier& notifier(Arc) const { return _digraph->notifier(Edge()); } |
---|
2209 | |
---|
2210 | protected: |
---|
2211 | |
---|
2212 | UndirectorBase() : _digraph(0) {} |
---|
2213 | |
---|
2214 | DGR* _digraph; |
---|
2215 | |
---|
2216 | void initialize(DGR& digraph) { |
---|
2217 | _digraph = &digraph; |
---|
2218 | } |
---|
2219 | |
---|
2220 | }; |
---|
2221 | |
---|
2222 | /// \ingroup graph_adaptors |
---|
2223 | /// |
---|
2224 | /// \brief Adaptor class for viewing a digraph as an undirected graph. |
---|
2225 | /// |
---|
2226 | /// Undirector adaptor can be used for viewing a digraph as an undirected |
---|
2227 | /// graph. All arcs of the underlying digraph are showed in the |
---|
2228 | /// adaptor as an edge (and also as a pair of arcs, of course). |
---|
2229 | /// This adaptor conforms to the \ref concepts::Graph "Graph" concept. |
---|
2230 | /// |
---|
2231 | /// The adapted digraph can also be modified through this adaptor |
---|
2232 | /// by adding or removing nodes or edges, unless the \c GR template |
---|
2233 | /// parameter is set to be \c const. |
---|
2234 | /// |
---|
2235 | /// \tparam DGR The type of the adapted digraph. |
---|
2236 | /// It must conform to the \ref concepts::Digraph "Digraph" concept. |
---|
2237 | /// It can also be specified to be \c const. |
---|
2238 | /// |
---|
2239 | /// \note The \c Node type of this adaptor and the adapted digraph are |
---|
2240 | /// convertible to each other, moreover the \c Edge type of the adaptor |
---|
2241 | /// and the \c Arc type of the adapted digraph are also convertible to |
---|
2242 | /// each other. |
---|
2243 | /// (Thus the \c Arc type of the adaptor is convertible to the \c Arc type |
---|
2244 | /// of the adapted digraph.) |
---|
2245 | template<typename DGR> |
---|
2246 | #ifdef DOXYGEN |
---|
2247 | class Undirector { |
---|
2248 | #else |
---|
2249 | class Undirector : |
---|
2250 | public GraphAdaptorExtender<UndirectorBase<DGR> > { |
---|
2251 | #endif |
---|
2252 | typedef GraphAdaptorExtender<UndirectorBase<DGR> > Parent; |
---|
2253 | public: |
---|
2254 | /// The type of the adapted digraph. |
---|
2255 | typedef DGR Digraph; |
---|
2256 | protected: |
---|
2257 | Undirector() { } |
---|
2258 | public: |
---|
2259 | |
---|
2260 | /// \brief Constructor |
---|
2261 | /// |
---|
2262 | /// Creates an undirected graph from the given digraph. |
---|
2263 | Undirector(DGR& digraph) { |
---|
2264 | this->initialize(digraph); |
---|
2265 | } |
---|
2266 | |
---|
2267 | /// \brief Arc map combined from two original arc maps |
---|
2268 | /// |
---|
2269 | /// This map adaptor class adapts two arc maps of the underlying |
---|
2270 | /// digraph to get an arc map of the undirected graph. |
---|
2271 | /// Its value type is inherited from the first arc map type (\c FW). |
---|
2272 | /// \tparam FW The type of the "foward" arc map. |
---|
2273 | /// \tparam BK The type of the "backward" arc map. |
---|
2274 | template <typename FW, typename BK> |
---|
2275 | class CombinedArcMap { |
---|
2276 | public: |
---|
2277 | |
---|
2278 | /// The key type of the map |
---|
2279 | typedef typename Parent::Arc Key; |
---|
2280 | /// The value type of the map |
---|
2281 | typedef typename FW::Value Value; |
---|
2282 | |
---|
2283 | typedef typename MapTraits<FW>::ReferenceMapTag ReferenceMapTag; |
---|
2284 | |
---|
2285 | typedef typename MapTraits<FW>::ReturnValue ReturnValue; |
---|
2286 | typedef typename MapTraits<FW>::ConstReturnValue ConstReturnValue; |
---|
2287 | typedef typename MapTraits<FW>::ReturnValue Reference; |
---|
2288 | typedef typename MapTraits<FW>::ConstReturnValue ConstReference; |
---|
2289 | |
---|
2290 | /// Constructor |
---|
2291 | CombinedArcMap(FW& forward, BK& backward) |
---|
2292 | : _forward(&forward), _backward(&backward) {} |
---|
2293 | |
---|
2294 | /// Sets the value associated with the given key. |
---|
2295 | void set(const Key& e, const Value& a) { |
---|
2296 | if (Parent::direction(e)) { |
---|
2297 | _forward->set(e, a); |
---|
2298 | } else { |
---|
2299 | _backward->set(e, a); |
---|
2300 | } |
---|
2301 | } |
---|
2302 | |
---|
2303 | /// Returns the value associated with the given key. |
---|
2304 | ConstReturnValue operator[](const Key& e) const { |
---|
2305 | if (Parent::direction(e)) { |
---|
2306 | return (*_forward)[e]; |
---|
2307 | } else { |
---|
2308 | return (*_backward)[e]; |
---|
2309 | } |
---|
2310 | } |
---|
2311 | |
---|
2312 | /// Returns a reference to the value associated with the given key. |
---|
2313 | ReturnValue operator[](const Key& e) { |
---|
2314 | if (Parent::direction(e)) { |
---|
2315 | return (*_forward)[e]; |
---|
2316 | } else { |
---|
2317 | return (*_backward)[e]; |
---|
2318 | } |
---|
2319 | } |
---|
2320 | |
---|
2321 | protected: |
---|
2322 | |
---|
2323 | FW* _forward; |
---|
2324 | BK* _backward; |
---|
2325 | |
---|
2326 | }; |
---|
2327 | |
---|
2328 | /// \brief Returns a combined arc map |
---|
2329 | /// |
---|
2330 | /// This function just returns a combined arc map. |
---|
2331 | template <typename FW, typename BK> |
---|
2332 | static CombinedArcMap<FW, BK> |
---|
2333 | combinedArcMap(FW& forward, BK& backward) { |
---|
2334 | return CombinedArcMap<FW, BK>(forward, backward); |
---|
2335 | } |
---|
2336 | |
---|
2337 | template <typename FW, typename BK> |
---|
2338 | static CombinedArcMap<const FW, BK> |
---|
2339 | combinedArcMap(const FW& forward, BK& backward) { |
---|
2340 | return CombinedArcMap<const FW, BK>(forward, backward); |
---|
2341 | } |
---|
2342 | |
---|
2343 | template <typename FW, typename BK> |
---|
2344 | static CombinedArcMap<FW, const BK> |
---|
2345 | combinedArcMap(FW& forward, const BK& backward) { |
---|
2346 | return CombinedArcMap<FW, const BK>(forward, backward); |
---|
2347 | } |
---|
2348 | |
---|
2349 | template <typename FW, typename BK> |
---|
2350 | static CombinedArcMap<const FW, const BK> |
---|
2351 | combinedArcMap(const FW& forward, const BK& backward) { |
---|
2352 | return CombinedArcMap<const FW, const BK>(forward, backward); |
---|
2353 | } |
---|
2354 | |
---|
2355 | }; |
---|
2356 | |
---|
2357 | /// \brief Returns a read-only Undirector adaptor |
---|
2358 | /// |
---|
2359 | /// This function just returns a read-only \ref Undirector adaptor. |
---|
2360 | /// \ingroup graph_adaptors |
---|
2361 | /// \relates Undirector |
---|
2362 | template<typename DGR> |
---|
2363 | Undirector<const DGR> undirector(const DGR& digraph) { |
---|
2364 | return Undirector<const DGR>(digraph); |
---|
2365 | } |
---|
2366 | |
---|
2367 | |
---|
2368 | template <typename GR, typename DM> |
---|
2369 | class OrienterBase { |
---|
2370 | public: |
---|
2371 | |
---|
2372 | typedef GR Graph; |
---|
2373 | typedef DM DirectionMap; |
---|
2374 | |
---|
2375 | typedef typename GR::Node Node; |
---|
2376 | typedef typename GR::Edge Arc; |
---|
2377 | |
---|
2378 | void reverseArc(const Arc& arc) { |
---|
2379 | _direction->set(arc, !(*_direction)[arc]); |
---|
2380 | } |
---|
2381 | |
---|
2382 | void first(Node& i) const { _graph->first(i); } |
---|
2383 | void first(Arc& i) const { _graph->first(i); } |
---|
2384 | void firstIn(Arc& i, const Node& n) const { |
---|
2385 | bool d = true; |
---|
2386 | _graph->firstInc(i, d, n); |
---|
2387 | while (i != INVALID && d == (*_direction)[i]) _graph->nextInc(i, d); |
---|
2388 | } |
---|
2389 | void firstOut(Arc& i, const Node& n ) const { |
---|
2390 | bool d = true; |
---|
2391 | _graph->firstInc(i, d, n); |
---|
2392 | while (i != INVALID && d != (*_direction)[i]) _graph->nextInc(i, d); |
---|
2393 | } |
---|
2394 | |
---|
2395 | void next(Node& i) const { _graph->next(i); } |
---|
2396 | void next(Arc& i) const { _graph->next(i); } |
---|
2397 | void nextIn(Arc& i) const { |
---|
2398 | bool d = !(*_direction)[i]; |
---|
2399 | _graph->nextInc(i, d); |
---|
2400 | while (i != INVALID && d == (*_direction)[i]) _graph->nextInc(i, d); |
---|
2401 | } |
---|
2402 | void nextOut(Arc& i) const { |
---|
2403 | bool d = (*_direction)[i]; |
---|
2404 | _graph->nextInc(i, d); |
---|
2405 | while (i != INVALID && d != (*_direction)[i]) _graph->nextInc(i, d); |
---|
2406 | } |
---|
2407 | |
---|
2408 | Node source(const Arc& e) const { |
---|
2409 | return (*_direction)[e] ? _graph->u(e) : _graph->v(e); |
---|
2410 | } |
---|
2411 | Node target(const Arc& e) const { |
---|
2412 | return (*_direction)[e] ? _graph->v(e) : _graph->u(e); |
---|
2413 | } |
---|
2414 | |
---|
2415 | typedef NodeNumTagIndicator<Graph> NodeNumTag; |
---|
2416 | int nodeNum() const { return _graph->nodeNum(); } |
---|
2417 | |
---|
2418 | typedef EdgeNumTagIndicator<Graph> ArcNumTag; |
---|
2419 | int arcNum() const { return _graph->edgeNum(); } |
---|
2420 | |
---|
2421 | typedef FindEdgeTagIndicator<Graph> FindArcTag; |
---|
2422 | Arc findArc(const Node& u, const Node& v, |
---|
2423 | const Arc& prev = INVALID) const { |
---|
2424 | Arc arc = _graph->findEdge(u, v, prev); |
---|
2425 | while (arc != INVALID && source(arc) != u) { |
---|
2426 | arc = _graph->findEdge(u, v, arc); |
---|
2427 | } |
---|
2428 | return arc; |
---|
2429 | } |
---|
2430 | |
---|
2431 | Node addNode() { |
---|
2432 | return Node(_graph->addNode()); |
---|
2433 | } |
---|
2434 | |
---|
2435 | Arc addArc(const Node& u, const Node& v) { |
---|
2436 | Arc arc = _graph->addEdge(u, v); |
---|
2437 | _direction->set(arc, _graph->u(arc) == u); |
---|
2438 | return arc; |
---|
2439 | } |
---|
2440 | |
---|
2441 | void erase(const Node& i) { _graph->erase(i); } |
---|
2442 | void erase(const Arc& i) { _graph->erase(i); } |
---|
2443 | |
---|
2444 | void clear() { _graph->clear(); } |
---|
2445 | |
---|
2446 | int id(const Node& v) const { return _graph->id(v); } |
---|
2447 | int id(const Arc& e) const { return _graph->id(e); } |
---|
2448 | |
---|
2449 | Node nodeFromId(int idx) const { return _graph->nodeFromId(idx); } |
---|
2450 | Arc arcFromId(int idx) const { return _graph->edgeFromId(idx); } |
---|
2451 | |
---|
2452 | int maxNodeId() const { return _graph->maxNodeId(); } |
---|
2453 | int maxArcId() const { return _graph->maxEdgeId(); } |
---|
2454 | |
---|
2455 | typedef typename ItemSetTraits<GR, Node>::ItemNotifier NodeNotifier; |
---|
2456 | NodeNotifier& notifier(Node) const { return _graph->notifier(Node()); } |
---|
2457 | |
---|
2458 | typedef typename ItemSetTraits<GR, Arc>::ItemNotifier ArcNotifier; |
---|
2459 | ArcNotifier& notifier(Arc) const { return _graph->notifier(Arc()); } |
---|
2460 | |
---|
2461 | template <typename V> |
---|
2462 | class NodeMap : public GR::template NodeMap<V> { |
---|
2463 | typedef typename GR::template NodeMap<V> Parent; |
---|
2464 | |
---|
2465 | public: |
---|
2466 | |
---|
2467 | explicit NodeMap(const OrienterBase<GR, DM>& adapter) |
---|
2468 | : Parent(*adapter._graph) {} |
---|
2469 | |
---|
2470 | NodeMap(const OrienterBase<GR, DM>& adapter, const V& value) |
---|
2471 | : Parent(*adapter._graph, value) {} |
---|
2472 | |
---|
2473 | private: |
---|
2474 | NodeMap& operator=(const NodeMap& cmap) { |
---|
2475 | return operator=<NodeMap>(cmap); |
---|
2476 | } |
---|
2477 | |
---|
2478 | template <typename CMap> |
---|
2479 | NodeMap& operator=(const CMap& cmap) { |
---|
2480 | Parent::operator=(cmap); |
---|
2481 | return *this; |
---|
2482 | } |
---|
2483 | |
---|
2484 | }; |
---|
2485 | |
---|
2486 | template <typename V> |
---|
2487 | class ArcMap : public GR::template EdgeMap<V> { |
---|
2488 | typedef typename Graph::template EdgeMap<V> Parent; |
---|
2489 | |
---|
2490 | public: |
---|
2491 | |
---|
2492 | explicit ArcMap(const OrienterBase<GR, DM>& adapter) |
---|
2493 | : Parent(*adapter._graph) { } |
---|
2494 | |
---|
2495 | ArcMap(const OrienterBase<GR, DM>& adapter, const V& value) |
---|
2496 | : Parent(*adapter._graph, value) { } |
---|
2497 | |
---|
2498 | private: |
---|
2499 | ArcMap& operator=(const ArcMap& cmap) { |
---|
2500 | return operator=<ArcMap>(cmap); |
---|
2501 | } |
---|
2502 | |
---|
2503 | template <typename CMap> |
---|
2504 | ArcMap& operator=(const CMap& cmap) { |
---|
2505 | Parent::operator=(cmap); |
---|
2506 | return *this; |
---|
2507 | } |
---|
2508 | }; |
---|
2509 | |
---|
2510 | |
---|
2511 | |
---|
2512 | protected: |
---|
2513 | Graph* _graph; |
---|
2514 | DM* _direction; |
---|
2515 | |
---|
2516 | void initialize(GR& graph, DM& direction) { |
---|
2517 | _graph = &graph; |
---|
2518 | _direction = &direction; |
---|
2519 | } |
---|
2520 | |
---|
2521 | }; |
---|
2522 | |
---|
2523 | /// \ingroup graph_adaptors |
---|
2524 | /// |
---|
2525 | /// \brief Adaptor class for orienting the edges of a graph to get a digraph |
---|
2526 | /// |
---|
2527 | /// Orienter adaptor can be used for orienting the edges of a graph to |
---|
2528 | /// get a digraph. A \c bool edge map of the underlying graph must be |
---|
2529 | /// specified, which define the direction of the arcs in the adaptor. |
---|
2530 | /// The arcs can be easily reversed by the \c reverseArc() member function |
---|
2531 | /// of the adaptor. |
---|
2532 | /// This class conforms to the \ref concepts::Digraph "Digraph" concept. |
---|
2533 | /// |
---|
2534 | /// The adapted graph can also be modified through this adaptor |
---|
2535 | /// by adding or removing nodes or arcs, unless the \c GR template |
---|
2536 | /// parameter is set to be \c const. |
---|
2537 | /// |
---|
2538 | /// \tparam GR The type of the adapted graph. |
---|
2539 | /// It must conform to the \ref concepts::Graph "Graph" concept. |
---|
2540 | /// It can also be specified to be \c const. |
---|
2541 | /// \tparam DM The type of the direction map. |
---|
2542 | /// It must be a \c bool (or convertible) edge map of the |
---|
2543 | /// adapted graph. The default type is |
---|
2544 | /// \ref concepts::Graph::EdgeMap "GR::EdgeMap<bool>". |
---|
2545 | /// |
---|
2546 | /// \note The \c Node type of this adaptor and the adapted graph are |
---|
2547 | /// convertible to each other, moreover the \c Arc type of the adaptor |
---|
2548 | /// and the \c Edge type of the adapted graph are also convertible to |
---|
2549 | /// each other. |
---|
2550 | #ifdef DOXYGEN |
---|
2551 | template<typename GR, |
---|
2552 | typename DM> |
---|
2553 | class Orienter { |
---|
2554 | #else |
---|
2555 | template<typename GR, |
---|
2556 | typename DM = typename GR::template EdgeMap<bool> > |
---|
2557 | class Orienter : |
---|
2558 | public DigraphAdaptorExtender<OrienterBase<GR, DM> > { |
---|
2559 | #endif |
---|
2560 | typedef DigraphAdaptorExtender<OrienterBase<GR, DM> > Parent; |
---|
2561 | public: |
---|
2562 | |
---|
2563 | /// The type of the adapted graph. |
---|
2564 | typedef GR Graph; |
---|
2565 | /// The type of the direction edge map. |
---|
2566 | typedef DM DirectionMap; |
---|
2567 | |
---|
2568 | typedef typename Parent::Arc Arc; |
---|
2569 | |
---|
2570 | protected: |
---|
2571 | Orienter() { } |
---|
2572 | |
---|
2573 | public: |
---|
2574 | |
---|
2575 | /// \brief Constructor |
---|
2576 | /// |
---|
2577 | /// Constructor of the adaptor. |
---|
2578 | Orienter(GR& graph, DM& direction) { |
---|
2579 | Parent::initialize(graph, direction); |
---|
2580 | } |
---|
2581 | |
---|
2582 | /// \brief Reverses the given arc |
---|
2583 | /// |
---|
2584 | /// This function reverses the given arc. |
---|
2585 | /// It is done by simply negate the assigned value of \c a |
---|
2586 | /// in the direction map. |
---|
2587 | void reverseArc(const Arc& a) { |
---|
2588 | Parent::reverseArc(a); |
---|
2589 | } |
---|
2590 | }; |
---|
2591 | |
---|
2592 | /// \brief Returns a read-only Orienter adaptor |
---|
2593 | /// |
---|
2594 | /// This function just returns a read-only \ref Orienter adaptor. |
---|
2595 | /// \ingroup graph_adaptors |
---|
2596 | /// \relates Orienter |
---|
2597 | template<typename GR, typename DM> |
---|
2598 | Orienter<const GR, DM> |
---|
2599 | orienter(const GR& graph, DM& direction) { |
---|
2600 | return Orienter<const GR, DM>(graph, direction); |
---|
2601 | } |
---|
2602 | |
---|
2603 | template<typename GR, typename DM> |
---|
2604 | Orienter<const GR, const DM> |
---|
2605 | orienter(const GR& graph, const DM& direction) { |
---|
2606 | return Orienter<const GR, const DM>(graph, direction); |
---|
2607 | } |
---|
2608 | |
---|
2609 | namespace _adaptor_bits { |
---|
2610 | |
---|
2611 | template <typename DGR, typename CM, typename FM, typename TL> |
---|
2612 | class ResForwardFilter { |
---|
2613 | public: |
---|
2614 | |
---|
2615 | typedef typename DGR::Arc Key; |
---|
2616 | typedef bool Value; |
---|
2617 | |
---|
2618 | private: |
---|
2619 | |
---|
2620 | const CM* _capacity; |
---|
2621 | const FM* _flow; |
---|
2622 | TL _tolerance; |
---|
2623 | |
---|
2624 | public: |
---|
2625 | |
---|
2626 | ResForwardFilter(const CM& capacity, const FM& flow, |
---|
2627 | const TL& tolerance = TL()) |
---|
2628 | : _capacity(&capacity), _flow(&flow), _tolerance(tolerance) { } |
---|
2629 | |
---|
2630 | bool operator[](const typename DGR::Arc& a) const { |
---|
2631 | return _tolerance.positive((*_capacity)[a] - (*_flow)[a]); |
---|
2632 | } |
---|
2633 | }; |
---|
2634 | |
---|
2635 | template<typename DGR,typename CM, typename FM, typename TL> |
---|
2636 | class ResBackwardFilter { |
---|
2637 | public: |
---|
2638 | |
---|
2639 | typedef typename DGR::Arc Key; |
---|
2640 | typedef bool Value; |
---|
2641 | |
---|
2642 | private: |
---|
2643 | |
---|
2644 | const CM* _capacity; |
---|
2645 | const FM* _flow; |
---|
2646 | TL _tolerance; |
---|
2647 | |
---|
2648 | public: |
---|
2649 | |
---|
2650 | ResBackwardFilter(const CM& capacity, const FM& flow, |
---|
2651 | const TL& tolerance = TL()) |
---|
2652 | : _capacity(&capacity), _flow(&flow), _tolerance(tolerance) { } |
---|
2653 | |
---|
2654 | bool operator[](const typename DGR::Arc& a) const { |
---|
2655 | return _tolerance.positive((*_flow)[a]); |
---|
2656 | } |
---|
2657 | }; |
---|
2658 | |
---|
2659 | } |
---|
2660 | |
---|
2661 | /// \ingroup graph_adaptors |
---|
2662 | /// |
---|
2663 | /// \brief Adaptor class for composing the residual digraph for directed |
---|
2664 | /// flow and circulation problems. |
---|
2665 | /// |
---|
2666 | /// ResidualDigraph can be used for composing the \e residual digraph |
---|
2667 | /// for directed flow and circulation problems. Let \f$ G=(V, A) \f$ |
---|
2668 | /// be a directed graph and let \f$ F \f$ be a number type. |
---|
2669 | /// Let \f$ flow, cap: A\to F \f$ be functions on the arcs. |
---|
2670 | /// This adaptor implements a digraph structure with node set \f$ V \f$ |
---|
2671 | /// and arc set \f$ A_{forward}\cup A_{backward} \f$, |
---|
2672 | /// where \f$ A_{forward}=\{uv : uv\in A, flow(uv)<cap(uv)\} \f$ and |
---|
2673 | /// \f$ A_{backward}=\{vu : uv\in A, flow(uv)>0\} \f$, i.e. the so |
---|
2674 | /// called residual digraph. |
---|
2675 | /// When the union \f$ A_{forward}\cup A_{backward} \f$ is taken, |
---|
2676 | /// multiplicities are counted, i.e. the adaptor has exactly |
---|
2677 | /// \f$ |A_{forward}| + |A_{backward}|\f$ arcs (it may have parallel |
---|
2678 | /// arcs). |
---|
2679 | /// This class conforms to the \ref concepts::Digraph "Digraph" concept. |
---|
2680 | /// |
---|
2681 | /// \tparam DGR The type of the adapted digraph. |
---|
2682 | /// It must conform to the \ref concepts::Digraph "Digraph" concept. |
---|
2683 | /// It is implicitly \c const. |
---|
2684 | /// \tparam CM The type of the capacity map. |
---|
2685 | /// It must be an arc map of some numerical type, which defines |
---|
2686 | /// the capacities in the flow problem. It is implicitly \c const. |
---|
2687 | /// The default type is |
---|
2688 | /// \ref concepts::Digraph::ArcMap "GR::ArcMap<int>". |
---|
2689 | /// \tparam FM The type of the flow map. |
---|
2690 | /// It must be an arc map of some numerical type, which defines |
---|
2691 | /// the flow values in the flow problem. The default type is \c CM. |
---|
2692 | /// \tparam TL The tolerance type for handling inexact computation. |
---|
2693 | /// The default tolerance type depends on the value type of the |
---|
2694 | /// capacity map. |
---|
2695 | /// |
---|
2696 | /// \note This adaptor is implemented using Undirector and FilterArcs |
---|
2697 | /// adaptors. |
---|
2698 | /// |
---|
2699 | /// \note The \c Node type of this adaptor and the adapted digraph are |
---|
2700 | /// convertible to each other, moreover the \c Arc type of the adaptor |
---|
2701 | /// is convertible to the \c Arc type of the adapted digraph. |
---|
2702 | #ifdef DOXYGEN |
---|
2703 | template<typename DGR, typename CM, typename FM, typename TL> |
---|
2704 | class ResidualDigraph |
---|
2705 | #else |
---|
2706 | template<typename DGR, |
---|
2707 | typename CM = typename DGR::template ArcMap<int>, |
---|
2708 | typename FM = CM, |
---|
2709 | typename TL = Tolerance<typename CM::Value> > |
---|
2710 | class ResidualDigraph |
---|
2711 | : public SubDigraph< |
---|
2712 | Undirector<const DGR>, |
---|
2713 | ConstMap<typename DGR::Node, Const<bool, true> >, |
---|
2714 | typename Undirector<const DGR>::template CombinedArcMap< |
---|
2715 | _adaptor_bits::ResForwardFilter<const DGR, CM, FM, TL>, |
---|
2716 | _adaptor_bits::ResBackwardFilter<const DGR, CM, FM, TL> > > |
---|
2717 | #endif |
---|
2718 | { |
---|
2719 | public: |
---|
2720 | |
---|
2721 | /// The type of the underlying digraph. |
---|
2722 | typedef DGR Digraph; |
---|
2723 | /// The type of the capacity map. |
---|
2724 | typedef CM CapacityMap; |
---|
2725 | /// The type of the flow map. |
---|
2726 | typedef FM FlowMap; |
---|
2727 | /// The tolerance type. |
---|
2728 | typedef TL Tolerance; |
---|
2729 | |
---|
2730 | typedef typename CapacityMap::Value Value; |
---|
2731 | typedef ResidualDigraph Adaptor; |
---|
2732 | |
---|
2733 | protected: |
---|
2734 | |
---|
2735 | typedef Undirector<const Digraph> Undirected; |
---|
2736 | |
---|
2737 | typedef ConstMap<typename DGR::Node, Const<bool, true> > NodeFilter; |
---|
2738 | |
---|
2739 | typedef _adaptor_bits::ResForwardFilter<const DGR, CM, |
---|
2740 | FM, TL> ForwardFilter; |
---|
2741 | |
---|
2742 | typedef _adaptor_bits::ResBackwardFilter<const DGR, CM, |
---|
2743 | FM, TL> BackwardFilter; |
---|
2744 | |
---|
2745 | typedef typename Undirected:: |
---|
2746 | template CombinedArcMap<ForwardFilter, BackwardFilter> ArcFilter; |
---|
2747 | |
---|
2748 | typedef SubDigraph<Undirected, NodeFilter, ArcFilter> Parent; |
---|
2749 | |
---|
2750 | const CapacityMap* _capacity; |
---|
2751 | FlowMap* _flow; |
---|
2752 | |
---|
2753 | Undirected _graph; |
---|
2754 | NodeFilter _node_filter; |
---|
2755 | ForwardFilter _forward_filter; |
---|
2756 | BackwardFilter _backward_filter; |
---|
2757 | ArcFilter _arc_filter; |
---|
2758 | |
---|
2759 | public: |
---|
2760 | |
---|
2761 | /// \brief Constructor |
---|
2762 | /// |
---|
2763 | /// Constructor of the residual digraph adaptor. The parameters are the |
---|
2764 | /// digraph, the capacity map, the flow map, and a tolerance object. |
---|
2765 | ResidualDigraph(const DGR& digraph, const CM& capacity, |
---|
2766 | FM& flow, const TL& tolerance = Tolerance()) |
---|
2767 | : Parent(), _capacity(&capacity), _flow(&flow), |
---|
2768 | _graph(digraph), _node_filter(), |
---|
2769 | _forward_filter(capacity, flow, tolerance), |
---|
2770 | _backward_filter(capacity, flow, tolerance), |
---|
2771 | _arc_filter(_forward_filter, _backward_filter) |
---|
2772 | { |
---|
2773 | Parent::initialize(_graph, _node_filter, _arc_filter); |
---|
2774 | } |
---|
2775 | |
---|
2776 | typedef typename Parent::Arc Arc; |
---|
2777 | |
---|
2778 | /// \brief Returns the residual capacity of the given arc. |
---|
2779 | /// |
---|
2780 | /// Returns the residual capacity of the given arc. |
---|
2781 | Value residualCapacity(const Arc& a) const { |
---|
2782 | if (Undirected::direction(a)) { |
---|
2783 | return (*_capacity)[a] - (*_flow)[a]; |
---|
2784 | } else { |
---|
2785 | return (*_flow)[a]; |
---|
2786 | } |
---|
2787 | } |
---|
2788 | |
---|
2789 | /// \brief Augments on the given arc in the residual digraph. |
---|
2790 | /// |
---|
2791 | /// Augments on the given arc in the residual digraph. It increases |
---|
2792 | /// or decreases the flow value on the original arc according to the |
---|
2793 | /// direction of the residual arc. |
---|
2794 | void augment(const Arc& a, const Value& v) const { |
---|
2795 | if (Undirected::direction(a)) { |
---|
2796 | _flow->set(a, (*_flow)[a] + v); |
---|
2797 | } else { |
---|
2798 | _flow->set(a, (*_flow)[a] - v); |
---|
2799 | } |
---|
2800 | } |
---|
2801 | |
---|
2802 | /// \brief Returns \c true if the given residual arc is a forward arc. |
---|
2803 | /// |
---|
2804 | /// Returns \c true if the given residual arc has the same orientation |
---|
2805 | /// as the original arc, i.e. it is a so called forward arc. |
---|
2806 | static bool forward(const Arc& a) { |
---|
2807 | return Undirected::direction(a); |
---|
2808 | } |
---|
2809 | |
---|
2810 | /// \brief Returns \c true if the given residual arc is a backward arc. |
---|
2811 | /// |
---|
2812 | /// Returns \c true if the given residual arc has the opposite orientation |
---|
2813 | /// than the original arc, i.e. it is a so called backward arc. |
---|
2814 | static bool backward(const Arc& a) { |
---|
2815 | return !Undirected::direction(a); |
---|
2816 | } |
---|
2817 | |
---|
2818 | /// \brief Returns the forward oriented residual arc. |
---|
2819 | /// |
---|
2820 | /// Returns the forward oriented residual arc related to the given |
---|
2821 | /// arc of the underlying digraph. |
---|
2822 | static Arc forward(const typename Digraph::Arc& a) { |
---|
2823 | return Undirected::direct(a, true); |
---|
2824 | } |
---|
2825 | |
---|
2826 | /// \brief Returns the backward oriented residual arc. |
---|
2827 | /// |
---|
2828 | /// Returns the backward oriented residual arc related to the given |
---|
2829 | /// arc of the underlying digraph. |
---|
2830 | static Arc backward(const typename Digraph::Arc& a) { |
---|
2831 | return Undirected::direct(a, false); |
---|
2832 | } |
---|
2833 | |
---|
2834 | /// \brief Residual capacity map. |
---|
2835 | /// |
---|
2836 | /// This map adaptor class can be used for obtaining the residual |
---|
2837 | /// capacities as an arc map of the residual digraph. |
---|
2838 | /// Its value type is inherited from the capacity map. |
---|
2839 | class ResidualCapacity { |
---|
2840 | protected: |
---|
2841 | const Adaptor* _adaptor; |
---|
2842 | public: |
---|
2843 | /// The key type of the map |
---|
2844 | typedef Arc Key; |
---|
2845 | /// The value type of the map |
---|
2846 | typedef typename CapacityMap::Value Value; |
---|
2847 | |
---|
2848 | /// Constructor |
---|
2849 | ResidualCapacity(const ResidualDigraph<DGR, CM, FM, TL>& adaptor) |
---|
2850 | : _adaptor(&adaptor) {} |
---|
2851 | |
---|
2852 | /// Returns the value associated with the given residual arc |
---|
2853 | Value operator[](const Arc& a) const { |
---|
2854 | return _adaptor->residualCapacity(a); |
---|
2855 | } |
---|
2856 | |
---|
2857 | }; |
---|
2858 | |
---|
2859 | /// \brief Returns a residual capacity map |
---|
2860 | /// |
---|
2861 | /// This function just returns a residual capacity map. |
---|
2862 | ResidualCapacity residualCapacity() const { |
---|
2863 | return ResidualCapacity(*this); |
---|
2864 | } |
---|
2865 | |
---|
2866 | }; |
---|
2867 | |
---|
2868 | /// \brief Returns a (read-only) Residual adaptor |
---|
2869 | /// |
---|
2870 | /// This function just returns a (read-only) \ref ResidualDigraph adaptor. |
---|
2871 | /// \ingroup graph_adaptors |
---|
2872 | /// \relates ResidualDigraph |
---|
2873 | template<typename DGR, typename CM, typename FM> |
---|
2874 | ResidualDigraph<DGR, CM, FM> |
---|
2875 | residualDigraph(const DGR& digraph, const CM& capacity_map, FM& flow_map) { |
---|
2876 | return ResidualDigraph<DGR, CM, FM> (digraph, capacity_map, flow_map); |
---|
2877 | } |
---|
2878 | |
---|
2879 | |
---|
2880 | template <typename DGR> |
---|
2881 | class SplitNodesBase { |
---|
2882 | typedef DigraphAdaptorBase<const DGR> Parent; |
---|
2883 | |
---|
2884 | public: |
---|
2885 | |
---|
2886 | typedef DGR Digraph; |
---|
2887 | typedef SplitNodesBase Adaptor; |
---|
2888 | |
---|
2889 | typedef typename DGR::Node DigraphNode; |
---|
2890 | typedef typename DGR::Arc DigraphArc; |
---|
2891 | |
---|
2892 | class Node; |
---|
2893 | class Arc; |
---|
2894 | |
---|
2895 | private: |
---|
2896 | |
---|
2897 | template <typename T> class NodeMapBase; |
---|
2898 | template <typename T> class ArcMapBase; |
---|
2899 | |
---|
2900 | public: |
---|
2901 | |
---|
2902 | class Node : public DigraphNode { |
---|
2903 | friend class SplitNodesBase; |
---|
2904 | template <typename T> friend class NodeMapBase; |
---|
2905 | private: |
---|
2906 | |
---|
2907 | bool _in; |
---|
2908 | Node(DigraphNode node, bool in) |
---|
2909 | : DigraphNode(node), _in(in) {} |
---|
2910 | |
---|
2911 | public: |
---|
2912 | |
---|
2913 | Node() {} |
---|
2914 | Node(Invalid) : DigraphNode(INVALID), _in(true) {} |
---|
2915 | |
---|
2916 | bool operator==(const Node& node) const { |
---|
2917 | return DigraphNode::operator==(node) && _in == node._in; |
---|
2918 | } |
---|
2919 | |
---|
2920 | bool operator!=(const Node& node) const { |
---|
2921 | return !(*this == node); |
---|
2922 | } |
---|
2923 | |
---|
2924 | bool operator<(const Node& node) const { |
---|
2925 | return DigraphNode::operator<(node) || |
---|
2926 | (DigraphNode::operator==(node) && _in < node._in); |
---|
2927 | } |
---|
2928 | }; |
---|
2929 | |
---|
2930 | class Arc { |
---|
2931 | friend class SplitNodesBase; |
---|
2932 | template <typename T> friend class ArcMapBase; |
---|
2933 | private: |
---|
2934 | typedef BiVariant<DigraphArc, DigraphNode> ArcImpl; |
---|
2935 | |
---|
2936 | explicit Arc(const DigraphArc& arc) : _item(arc) {} |
---|
2937 | explicit Arc(const DigraphNode& node) : _item(node) {} |
---|
2938 | |
---|
2939 | ArcImpl _item; |
---|
2940 | |
---|
2941 | public: |
---|
2942 | Arc() {} |
---|
2943 | Arc(Invalid) : _item(DigraphArc(INVALID)) {} |
---|
2944 | |
---|
2945 | bool operator==(const Arc& arc) const { |
---|
2946 | if (_item.firstState()) { |
---|
2947 | if (arc._item.firstState()) { |
---|
2948 | return _item.first() == arc._item.first(); |
---|
2949 | } |
---|
2950 | } else { |
---|
2951 | if (arc._item.secondState()) { |
---|
2952 | return _item.second() == arc._item.second(); |
---|
2953 | } |
---|
2954 | } |
---|
2955 | return false; |
---|
2956 | } |
---|
2957 | |
---|
2958 | bool operator!=(const Arc& arc) const { |
---|
2959 | return !(*this == arc); |
---|
2960 | } |
---|
2961 | |
---|
2962 | bool operator<(const Arc& arc) const { |
---|
2963 | if (_item.firstState()) { |
---|
2964 | if (arc._item.firstState()) { |
---|
2965 | return _item.first() < arc._item.first(); |
---|
2966 | } |
---|
2967 | return false; |
---|
2968 | } else { |
---|
2969 | if (arc._item.secondState()) { |
---|
2970 | return _item.second() < arc._item.second(); |
---|
2971 | } |
---|
2972 | return true; |
---|
2973 | } |
---|
2974 | } |
---|
2975 | |
---|
2976 | operator DigraphArc() const { return _item.first(); } |
---|
2977 | operator DigraphNode() const { return _item.second(); } |
---|
2978 | |
---|
2979 | }; |
---|
2980 | |
---|
2981 | void first(Node& n) const { |
---|
2982 | _digraph->first(n); |
---|
2983 | n._in = true; |
---|
2984 | } |
---|
2985 | |
---|
2986 | void next(Node& n) const { |
---|
2987 | if (n._in) { |
---|
2988 | n._in = false; |
---|
2989 | } else { |
---|
2990 | n._in = true; |
---|
2991 | _digraph->next(n); |
---|
2992 | } |
---|
2993 | } |
---|
2994 | |
---|
2995 | void first(Arc& e) const { |
---|
2996 | e._item.setSecond(); |
---|
2997 | _digraph->first(e._item.second()); |
---|
2998 | if (e._item.second() == INVALID) { |
---|
2999 | e._item.setFirst(); |
---|
3000 | _digraph->first(e._item.first()); |
---|
3001 | } |
---|
3002 | } |
---|
3003 | |
---|
3004 | void next(Arc& e) const { |
---|
3005 | if (e._item.secondState()) { |
---|
3006 | _digraph->next(e._item.second()); |
---|
3007 | if (e._item.second() == INVALID) { |
---|
3008 | e._item.setFirst(); |
---|
3009 | _digraph->first(e._item.first()); |
---|
3010 | } |
---|
3011 | } else { |
---|
3012 | _digraph->next(e._item.first()); |
---|
3013 | } |
---|
3014 | } |
---|
3015 | |
---|
3016 | void firstOut(Arc& e, const Node& n) const { |
---|
3017 | if (n._in) { |
---|
3018 | e._item.setSecond(n); |
---|
3019 | } else { |
---|
3020 | e._item.setFirst(); |
---|
3021 | _digraph->firstOut(e._item.first(), n); |
---|
3022 | } |
---|
3023 | } |
---|
3024 | |
---|
3025 | void nextOut(Arc& e) const { |
---|
3026 | if (!e._item.firstState()) { |
---|
3027 | e._item.setFirst(INVALID); |
---|
3028 | } else { |
---|
3029 | _digraph->nextOut(e._item.first()); |
---|
3030 | } |
---|
3031 | } |
---|
3032 | |
---|
3033 | void firstIn(Arc& e, const Node& n) const { |
---|
3034 | if (!n._in) { |
---|
3035 | e._item.setSecond(n); |
---|
3036 | } else { |
---|
3037 | e._item.setFirst(); |
---|
3038 | _digraph->firstIn(e._item.first(), n); |
---|
3039 | } |
---|
3040 | } |
---|
3041 | |
---|
3042 | void nextIn(Arc& e) const { |
---|
3043 | if (!e._item.firstState()) { |
---|
3044 | e._item.setFirst(INVALID); |
---|
3045 | } else { |
---|
3046 | _digraph->nextIn(e._item.first()); |
---|
3047 | } |
---|
3048 | } |
---|
3049 | |
---|
3050 | Node source(const Arc& e) const { |
---|
3051 | if (e._item.firstState()) { |
---|
3052 | return Node(_digraph->source(e._item.first()), false); |
---|
3053 | } else { |
---|
3054 | return Node(e._item.second(), true); |
---|
3055 | } |
---|
3056 | } |
---|
3057 | |
---|
3058 | Node target(const Arc& e) const { |
---|
3059 | if (e._item.firstState()) { |
---|
3060 | return Node(_digraph->target(e._item.first()), true); |
---|
3061 | } else { |
---|
3062 | return Node(e._item.second(), false); |
---|
3063 | } |
---|
3064 | } |
---|
3065 | |
---|
3066 | int id(const Node& n) const { |
---|
3067 | return (_digraph->id(n) << 1) | (n._in ? 0 : 1); |
---|
3068 | } |
---|
3069 | Node nodeFromId(int ix) const { |
---|
3070 | return Node(_digraph->nodeFromId(ix >> 1), (ix & 1) == 0); |
---|
3071 | } |
---|
3072 | int maxNodeId() const { |
---|
3073 | return 2 * _digraph->maxNodeId() + 1; |
---|
3074 | } |
---|
3075 | |
---|
3076 | int id(const Arc& e) const { |
---|
3077 | if (e._item.firstState()) { |
---|
3078 | return _digraph->id(e._item.first()) << 1; |
---|
3079 | } else { |
---|
3080 | return (_digraph->id(e._item.second()) << 1) | 1; |
---|
3081 | } |
---|
3082 | } |
---|
3083 | Arc arcFromId(int ix) const { |
---|
3084 | if ((ix & 1) == 0) { |
---|
3085 | return Arc(_digraph->arcFromId(ix >> 1)); |
---|
3086 | } else { |
---|
3087 | return Arc(_digraph->nodeFromId(ix >> 1)); |
---|
3088 | } |
---|
3089 | } |
---|
3090 | int maxArcId() const { |
---|
3091 | return std::max(_digraph->maxNodeId() << 1, |
---|
3092 | (_digraph->maxArcId() << 1) | 1); |
---|
3093 | } |
---|
3094 | |
---|
3095 | static bool inNode(const Node& n) { |
---|
3096 | return n._in; |
---|
3097 | } |
---|
3098 | |
---|
3099 | static bool outNode(const Node& n) { |
---|
3100 | return !n._in; |
---|
3101 | } |
---|
3102 | |
---|
3103 | static bool origArc(const Arc& e) { |
---|
3104 | return e._item.firstState(); |
---|
3105 | } |
---|
3106 | |
---|
3107 | static bool bindArc(const Arc& e) { |
---|
3108 | return e._item.secondState(); |
---|
3109 | } |
---|
3110 | |
---|
3111 | static Node inNode(const DigraphNode& n) { |
---|
3112 | return Node(n, true); |
---|
3113 | } |
---|
3114 | |
---|
3115 | static Node outNode(const DigraphNode& n) { |
---|
3116 | return Node(n, false); |
---|
3117 | } |
---|
3118 | |
---|
3119 | static Arc arc(const DigraphNode& n) { |
---|
3120 | return Arc(n); |
---|
3121 | } |
---|
3122 | |
---|
3123 | static Arc arc(const DigraphArc& e) { |
---|
3124 | return Arc(e); |
---|
3125 | } |
---|
3126 | |
---|
3127 | typedef True NodeNumTag; |
---|
3128 | int nodeNum() const { |
---|
3129 | return 2 * countNodes(*_digraph); |
---|
3130 | } |
---|
3131 | |
---|
3132 | typedef True ArcNumTag; |
---|
3133 | int arcNum() const { |
---|
3134 | return countArcs(*_digraph) + countNodes(*_digraph); |
---|
3135 | } |
---|
3136 | |
---|
3137 | typedef True FindArcTag; |
---|
3138 | Arc findArc(const Node& u, const Node& v, |
---|
3139 | const Arc& prev = INVALID) const { |
---|
3140 | if (inNode(u) && outNode(v)) { |
---|
3141 | if (static_cast<const DigraphNode&>(u) == |
---|
3142 | static_cast<const DigraphNode&>(v) && prev == INVALID) { |
---|
3143 | return Arc(u); |
---|
3144 | } |
---|
3145 | } |
---|
3146 | else if (outNode(u) && inNode(v)) { |
---|
3147 | return Arc(::lemon::findArc(*_digraph, u, v, prev)); |
---|
3148 | } |
---|
3149 | return INVALID; |
---|
3150 | } |
---|
3151 | |
---|
3152 | private: |
---|
3153 | |
---|
3154 | template <typename V> |
---|
3155 | class NodeMapBase |
---|
3156 | : public MapTraits<typename Parent::template NodeMap<V> > { |
---|
3157 | typedef typename Parent::template NodeMap<V> NodeImpl; |
---|
3158 | public: |
---|
3159 | typedef Node Key; |
---|
3160 | typedef V Value; |
---|
3161 | typedef typename MapTraits<NodeImpl>::ReferenceMapTag ReferenceMapTag; |
---|
3162 | typedef typename MapTraits<NodeImpl>::ReturnValue ReturnValue; |
---|
3163 | typedef typename MapTraits<NodeImpl>::ConstReturnValue ConstReturnValue; |
---|
3164 | typedef typename MapTraits<NodeImpl>::ReturnValue Reference; |
---|
3165 | typedef typename MapTraits<NodeImpl>::ConstReturnValue ConstReference; |
---|
3166 | |
---|
3167 | NodeMapBase(const SplitNodesBase<DGR>& adaptor) |
---|
3168 | : _in_map(*adaptor._digraph), _out_map(*adaptor._digraph) {} |
---|
3169 | NodeMapBase(const SplitNodesBase<DGR>& adaptor, const V& value) |
---|
3170 | : _in_map(*adaptor._digraph, value), |
---|
3171 | _out_map(*adaptor._digraph, value) {} |
---|
3172 | |
---|
3173 | void set(const Node& key, const V& val) { |
---|
3174 | if (SplitNodesBase<DGR>::inNode(key)) { _in_map.set(key, val); } |
---|
3175 | else {_out_map.set(key, val); } |
---|
3176 | } |
---|
3177 | |
---|
3178 | ReturnValue operator[](const Node& key) { |
---|
3179 | if (SplitNodesBase<DGR>::inNode(key)) { return _in_map[key]; } |
---|
3180 | else { return _out_map[key]; } |
---|
3181 | } |
---|
3182 | |
---|
3183 | ConstReturnValue operator[](const Node& key) const { |
---|
3184 | if (Adaptor::inNode(key)) { return _in_map[key]; } |
---|
3185 | else { return _out_map[key]; } |
---|
3186 | } |
---|
3187 | |
---|
3188 | private: |
---|
3189 | NodeImpl _in_map, _out_map; |
---|
3190 | }; |
---|
3191 | |
---|
3192 | template <typename V> |
---|
3193 | class ArcMapBase |
---|
3194 | : public MapTraits<typename Parent::template ArcMap<V> > { |
---|
3195 | typedef typename Parent::template ArcMap<V> ArcImpl; |
---|
3196 | typedef typename Parent::template NodeMap<V> NodeImpl; |
---|
3197 | public: |
---|
3198 | typedef Arc Key; |
---|
3199 | typedef V Value; |
---|
3200 | typedef typename MapTraits<ArcImpl>::ReferenceMapTag ReferenceMapTag; |
---|
3201 | typedef typename MapTraits<ArcImpl>::ReturnValue ReturnValue; |
---|
3202 | typedef typename MapTraits<ArcImpl>::ConstReturnValue ConstReturnValue; |
---|
3203 | typedef typename MapTraits<ArcImpl>::ReturnValue Reference; |
---|
3204 | typedef typename MapTraits<ArcImpl>::ConstReturnValue ConstReference; |
---|
3205 | |
---|
3206 | ArcMapBase(const SplitNodesBase<DGR>& adaptor) |
---|
3207 | : _arc_map(*adaptor._digraph), _node_map(*adaptor._digraph) {} |
---|
3208 | ArcMapBase(const SplitNodesBase<DGR>& adaptor, const V& value) |
---|
3209 | : _arc_map(*adaptor._digraph, value), |
---|
3210 | _node_map(*adaptor._digraph, value) {} |
---|
3211 | |
---|
3212 | void set(const Arc& key, const V& val) { |
---|
3213 | if (SplitNodesBase<DGR>::origArc(key)) { |
---|
3214 | _arc_map.set(static_cast<const DigraphArc&>(key), val); |
---|
3215 | } else { |
---|
3216 | _node_map.set(static_cast<const DigraphNode&>(key), val); |
---|
3217 | } |
---|
3218 | } |
---|
3219 | |
---|
3220 | ReturnValue operator[](const Arc& key) { |
---|
3221 | if (SplitNodesBase<DGR>::origArc(key)) { |
---|
3222 | return _arc_map[static_cast<const DigraphArc&>(key)]; |
---|
3223 | } else { |
---|
3224 | return _node_map[static_cast<const DigraphNode&>(key)]; |
---|
3225 | } |
---|
3226 | } |
---|
3227 | |
---|
3228 | ConstReturnValue operator[](const Arc& key) const { |
---|
3229 | if (SplitNodesBase<DGR>::origArc(key)) { |
---|
3230 | return _arc_map[static_cast<const DigraphArc&>(key)]; |
---|
3231 | } else { |
---|
3232 | return _node_map[static_cast<const DigraphNode&>(key)]; |
---|
3233 | } |
---|
3234 | } |
---|
3235 | |
---|
3236 | private: |
---|
3237 | ArcImpl _arc_map; |
---|
3238 | NodeImpl _node_map; |
---|
3239 | }; |
---|
3240 | |
---|
3241 | public: |
---|
3242 | |
---|
3243 | template <typename V> |
---|
3244 | class NodeMap |
---|
3245 | : public SubMapExtender<SplitNodesBase<DGR>, NodeMapBase<V> > { |
---|
3246 | typedef SubMapExtender<SplitNodesBase<DGR>, NodeMapBase<V> > Parent; |
---|
3247 | |
---|
3248 | public: |
---|
3249 | typedef V Value; |
---|
3250 | |
---|
3251 | NodeMap(const SplitNodesBase<DGR>& adaptor) |
---|
3252 | : Parent(adaptor) {} |
---|
3253 | |
---|
3254 | NodeMap(const SplitNodesBase<DGR>& adaptor, const V& value) |
---|
3255 | : Parent(adaptor, value) {} |
---|
3256 | |
---|
3257 | private: |
---|
3258 | NodeMap& operator=(const NodeMap& cmap) { |
---|
3259 | return operator=<NodeMap>(cmap); |
---|
3260 | } |
---|
3261 | |
---|
3262 | template <typename CMap> |
---|
3263 | NodeMap& operator=(const CMap& cmap) { |
---|
3264 | Parent::operator=(cmap); |
---|
3265 | return *this; |
---|
3266 | } |
---|
3267 | }; |
---|
3268 | |
---|
3269 | template <typename V> |
---|
3270 | class ArcMap |
---|
3271 | : public SubMapExtender<SplitNodesBase<DGR>, ArcMapBase<V> > { |
---|
3272 | typedef SubMapExtender<SplitNodesBase<DGR>, ArcMapBase<V> > Parent; |
---|
3273 | |
---|
3274 | public: |
---|
3275 | typedef V Value; |
---|
3276 | |
---|
3277 | ArcMap(const SplitNodesBase<DGR>& adaptor) |
---|
3278 | : Parent(adaptor) {} |
---|
3279 | |
---|
3280 | ArcMap(const SplitNodesBase<DGR>& adaptor, const V& value) |
---|
3281 | : Parent(adaptor, value) {} |
---|
3282 | |
---|
3283 | private: |
---|
3284 | ArcMap& operator=(const ArcMap& cmap) { |
---|
3285 | return operator=<ArcMap>(cmap); |
---|
3286 | } |
---|
3287 | |
---|
3288 | template <typename CMap> |
---|
3289 | ArcMap& operator=(const CMap& cmap) { |
---|
3290 | Parent::operator=(cmap); |
---|
3291 | return *this; |
---|
3292 | } |
---|
3293 | }; |
---|
3294 | |
---|
3295 | protected: |
---|
3296 | |
---|
3297 | SplitNodesBase() : _digraph(0) {} |
---|
3298 | |
---|
3299 | DGR* _digraph; |
---|
3300 | |
---|
3301 | void initialize(Digraph& digraph) { |
---|
3302 | _digraph = &digraph; |
---|
3303 | } |
---|
3304 | |
---|
3305 | }; |
---|
3306 | |
---|
3307 | /// \ingroup graph_adaptors |
---|
3308 | /// |
---|
3309 | /// \brief Adaptor class for splitting the nodes of a digraph. |
---|
3310 | /// |
---|
3311 | /// SplitNodes adaptor can be used for splitting each node into an |
---|
3312 | /// \e in-node and an \e out-node in a digraph. Formaly, the adaptor |
---|
3313 | /// replaces each node \f$ u \f$ in the digraph with two nodes, |
---|
3314 | /// namely node \f$ u_{in} \f$ and node \f$ u_{out} \f$. |
---|
3315 | /// If there is a \f$ (v, u) \f$ arc in the original digraph, then the |
---|
3316 | /// new target of the arc will be \f$ u_{in} \f$ and similarly the |
---|
3317 | /// source of each original \f$ (u, v) \f$ arc will be \f$ u_{out} \f$. |
---|
3318 | /// The adaptor adds an additional \e bind \e arc from \f$ u_{in} \f$ |
---|
3319 | /// to \f$ u_{out} \f$ for each node \f$ u \f$ of the original digraph. |
---|
3320 | /// |
---|
3321 | /// The aim of this class is running an algorithm with respect to node |
---|
3322 | /// costs or capacities if the algorithm considers only arc costs or |
---|
3323 | /// capacities directly. |
---|
3324 | /// In this case you can use \c SplitNodes adaptor, and set the node |
---|
3325 | /// costs/capacities of the original digraph to the \e bind \e arcs |
---|
3326 | /// in the adaptor. |
---|
3327 | /// |
---|
3328 | /// \tparam DGR The type of the adapted digraph. |
---|
3329 | /// It must conform to the \ref concepts::Digraph "Digraph" concept. |
---|
3330 | /// It is implicitly \c const. |
---|
3331 | /// |
---|
3332 | /// \note The \c Node type of this adaptor is converible to the \c Node |
---|
3333 | /// type of the adapted digraph. |
---|
3334 | template <typename DGR> |
---|
3335 | #ifdef DOXYGEN |
---|
3336 | class SplitNodes { |
---|
3337 | #else |
---|
3338 | class SplitNodes |
---|
3339 | : public DigraphAdaptorExtender<SplitNodesBase<const DGR> > { |
---|
3340 | #endif |
---|
3341 | typedef DigraphAdaptorExtender<SplitNodesBase<const DGR> > Parent; |
---|
3342 | |
---|
3343 | public: |
---|
3344 | typedef DGR Digraph; |
---|
3345 | |
---|
3346 | typedef typename DGR::Node DigraphNode; |
---|
3347 | typedef typename DGR::Arc DigraphArc; |
---|
3348 | |
---|
3349 | typedef typename Parent::Node Node; |
---|
3350 | typedef typename Parent::Arc Arc; |
---|
3351 | |
---|
3352 | /// \brief Constructor |
---|
3353 | /// |
---|
3354 | /// Constructor of the adaptor. |
---|
3355 | SplitNodes(const DGR& g) { |
---|
3356 | Parent::initialize(g); |
---|
3357 | } |
---|
3358 | |
---|
3359 | /// \brief Returns \c true if the given node is an in-node. |
---|
3360 | /// |
---|
3361 | /// Returns \c true if the given node is an in-node. |
---|
3362 | static bool inNode(const Node& n) { |
---|
3363 | return Parent::inNode(n); |
---|
3364 | } |
---|
3365 | |
---|
3366 | /// \brief Returns \c true if the given node is an out-node. |
---|
3367 | /// |
---|
3368 | /// Returns \c true if the given node is an out-node. |
---|
3369 | static bool outNode(const Node& n) { |
---|
3370 | return Parent::outNode(n); |
---|
3371 | } |
---|
3372 | |
---|
3373 | /// \brief Returns \c true if the given arc is an original arc. |
---|
3374 | /// |
---|
3375 | /// Returns \c true if the given arc is one of the arcs in the |
---|
3376 | /// original digraph. |
---|
3377 | static bool origArc(const Arc& a) { |
---|
3378 | return Parent::origArc(a); |
---|
3379 | } |
---|
3380 | |
---|
3381 | /// \brief Returns \c true if the given arc is a bind arc. |
---|
3382 | /// |
---|
3383 | /// Returns \c true if the given arc is a bind arc, i.e. it connects |
---|
3384 | /// an in-node and an out-node. |
---|
3385 | static bool bindArc(const Arc& a) { |
---|
3386 | return Parent::bindArc(a); |
---|
3387 | } |
---|
3388 | |
---|
3389 | /// \brief Returns the in-node created from the given original node. |
---|
3390 | /// |
---|
3391 | /// Returns the in-node created from the given original node. |
---|
3392 | static Node inNode(const DigraphNode& n) { |
---|
3393 | return Parent::inNode(n); |
---|
3394 | } |
---|
3395 | |
---|
3396 | /// \brief Returns the out-node created from the given original node. |
---|
3397 | /// |
---|
3398 | /// Returns the out-node created from the given original node. |
---|
3399 | static Node outNode(const DigraphNode& n) { |
---|
3400 | return Parent::outNode(n); |
---|
3401 | } |
---|
3402 | |
---|
3403 | /// \brief Returns the bind arc that corresponds to the given |
---|
3404 | /// original node. |
---|
3405 | /// |
---|
3406 | /// Returns the bind arc in the adaptor that corresponds to the given |
---|
3407 | /// original node, i.e. the arc connecting the in-node and out-node |
---|
3408 | /// of \c n. |
---|
3409 | static Arc arc(const DigraphNode& n) { |
---|
3410 | return Parent::arc(n); |
---|
3411 | } |
---|
3412 | |
---|
3413 | /// \brief Returns the arc that corresponds to the given original arc. |
---|
3414 | /// |
---|
3415 | /// Returns the arc in the adaptor that corresponds to the given |
---|
3416 | /// original arc. |
---|
3417 | static Arc arc(const DigraphArc& a) { |
---|
3418 | return Parent::arc(a); |
---|
3419 | } |
---|
3420 | |
---|
3421 | /// \brief Node map combined from two original node maps |
---|
3422 | /// |
---|
3423 | /// This map adaptor class adapts two node maps of the original digraph |
---|
3424 | /// to get a node map of the split digraph. |
---|
3425 | /// Its value type is inherited from the first node map type (\c IN). |
---|
3426 | /// \tparam IN The type of the node map for the in-nodes. |
---|
3427 | /// \tparam OUT The type of the node map for the out-nodes. |
---|
3428 | template <typename IN, typename OUT> |
---|
3429 | class CombinedNodeMap { |
---|
3430 | public: |
---|
3431 | |
---|
3432 | /// The key type of the map |
---|
3433 | typedef Node Key; |
---|
3434 | /// The value type of the map |
---|
3435 | typedef typename IN::Value Value; |
---|
3436 | |
---|
3437 | typedef typename MapTraits<IN>::ReferenceMapTag ReferenceMapTag; |
---|
3438 | typedef typename MapTraits<IN>::ReturnValue ReturnValue; |
---|
3439 | typedef typename MapTraits<IN>::ConstReturnValue ConstReturnValue; |
---|
3440 | typedef typename MapTraits<IN>::ReturnValue Reference; |
---|
3441 | typedef typename MapTraits<IN>::ConstReturnValue ConstReference; |
---|
3442 | |
---|
3443 | /// Constructor |
---|
3444 | CombinedNodeMap(IN& in_map, OUT& out_map) |
---|
3445 | : _in_map(in_map), _out_map(out_map) {} |
---|
3446 | |
---|
3447 | /// Returns the value associated with the given key. |
---|
3448 | Value operator[](const Key& key) const { |
---|
3449 | if (SplitNodesBase<const DGR>::inNode(key)) { |
---|
3450 | return _in_map[key]; |
---|
3451 | } else { |
---|
3452 | return _out_map[key]; |
---|
3453 | } |
---|
3454 | } |
---|
3455 | |
---|
3456 | /// Returns a reference to the value associated with the given key. |
---|
3457 | Value& operator[](const Key& key) { |
---|
3458 | if (SplitNodesBase<const DGR>::inNode(key)) { |
---|
3459 | return _in_map[key]; |
---|
3460 | } else { |
---|
3461 | return _out_map[key]; |
---|
3462 | } |
---|
3463 | } |
---|
3464 | |
---|
3465 | /// Sets the value associated with the given key. |
---|
3466 | void set(const Key& key, const Value& value) { |
---|
3467 | if (SplitNodesBase<const DGR>::inNode(key)) { |
---|
3468 | _in_map.set(key, value); |
---|
3469 | } else { |
---|
3470 | _out_map.set(key, value); |
---|
3471 | } |
---|
3472 | } |
---|
3473 | |
---|
3474 | private: |
---|
3475 | |
---|
3476 | IN& _in_map; |
---|
3477 | OUT& _out_map; |
---|
3478 | |
---|
3479 | }; |
---|
3480 | |
---|
3481 | |
---|
3482 | /// \brief Returns a combined node map |
---|
3483 | /// |
---|
3484 | /// This function just returns a combined node map. |
---|
3485 | template <typename IN, typename OUT> |
---|
3486 | static CombinedNodeMap<IN, OUT> |
---|
3487 | combinedNodeMap(IN& in_map, OUT& out_map) { |
---|
3488 | return CombinedNodeMap<IN, OUT>(in_map, out_map); |
---|
3489 | } |
---|
3490 | |
---|
3491 | template <typename IN, typename OUT> |
---|
3492 | static CombinedNodeMap<const IN, OUT> |
---|
3493 | combinedNodeMap(const IN& in_map, OUT& out_map) { |
---|
3494 | return CombinedNodeMap<const IN, OUT>(in_map, out_map); |
---|
3495 | } |
---|
3496 | |
---|
3497 | template <typename IN, typename OUT> |
---|
3498 | static CombinedNodeMap<IN, const OUT> |
---|
3499 | combinedNodeMap(IN& in_map, const OUT& out_map) { |
---|
3500 | return CombinedNodeMap<IN, const OUT>(in_map, out_map); |
---|
3501 | } |
---|
3502 | |
---|
3503 | template <typename IN, typename OUT> |
---|
3504 | static CombinedNodeMap<const IN, const OUT> |
---|
3505 | combinedNodeMap(const IN& in_map, const OUT& out_map) { |
---|
3506 | return CombinedNodeMap<const IN, const OUT>(in_map, out_map); |
---|
3507 | } |
---|
3508 | |
---|
3509 | /// \brief Arc map combined from an arc map and a node map of the |
---|
3510 | /// original digraph. |
---|
3511 | /// |
---|
3512 | /// This map adaptor class adapts an arc map and a node map of the |
---|
3513 | /// original digraph to get an arc map of the split digraph. |
---|
3514 | /// Its value type is inherited from the original arc map type (\c AM). |
---|
3515 | /// \tparam AM The type of the arc map. |
---|
3516 | /// \tparam NM the type of the node map. |
---|
3517 | template <typename AM, typename NM> |
---|
3518 | class CombinedArcMap { |
---|
3519 | public: |
---|
3520 | |
---|
3521 | /// The key type of the map |
---|
3522 | typedef Arc Key; |
---|
3523 | /// The value type of the map |
---|
3524 | typedef typename AM::Value Value; |
---|
3525 | |
---|
3526 | typedef typename MapTraits<AM>::ReferenceMapTag ReferenceMapTag; |
---|
3527 | typedef typename MapTraits<AM>::ReturnValue ReturnValue; |
---|
3528 | typedef typename MapTraits<AM>::ConstReturnValue ConstReturnValue; |
---|
3529 | typedef typename MapTraits<AM>::ReturnValue Reference; |
---|
3530 | typedef typename MapTraits<AM>::ConstReturnValue ConstReference; |
---|
3531 | |
---|
3532 | /// Constructor |
---|
3533 | CombinedArcMap(AM& arc_map, NM& node_map) |
---|
3534 | : _arc_map(arc_map), _node_map(node_map) {} |
---|
3535 | |
---|
3536 | /// Returns the value associated with the given key. |
---|
3537 | Value operator[](const Key& arc) const { |
---|
3538 | if (SplitNodesBase<const DGR>::origArc(arc)) { |
---|
3539 | return _arc_map[arc]; |
---|
3540 | } else { |
---|
3541 | return _node_map[arc]; |
---|
3542 | } |
---|
3543 | } |
---|
3544 | |
---|
3545 | /// Returns a reference to the value associated with the given key. |
---|
3546 | Value& operator[](const Key& arc) { |
---|
3547 | if (SplitNodesBase<const DGR>::origArc(arc)) { |
---|
3548 | return _arc_map[arc]; |
---|
3549 | } else { |
---|
3550 | return _node_map[arc]; |
---|
3551 | } |
---|
3552 | } |
---|
3553 | |
---|
3554 | /// Sets the value associated with the given key. |
---|
3555 | void set(const Arc& arc, const Value& val) { |
---|
3556 | if (SplitNodesBase<const DGR>::origArc(arc)) { |
---|
3557 | _arc_map.set(arc, val); |
---|
3558 | } else { |
---|
3559 | _node_map.set(arc, val); |
---|
3560 | } |
---|
3561 | } |
---|
3562 | |
---|
3563 | private: |
---|
3564 | |
---|
3565 | AM& _arc_map; |
---|
3566 | NM& _node_map; |
---|
3567 | |
---|
3568 | }; |
---|
3569 | |
---|
3570 | /// \brief Returns a combined arc map |
---|
3571 | /// |
---|
3572 | /// This function just returns a combined arc map. |
---|
3573 | template <typename ArcMap, typename NodeMap> |
---|
3574 | static CombinedArcMap<ArcMap, NodeMap> |
---|
3575 | combinedArcMap(ArcMap& arc_map, NodeMap& node_map) { |
---|
3576 | return CombinedArcMap<ArcMap, NodeMap>(arc_map, node_map); |
---|
3577 | } |
---|
3578 | |
---|
3579 | template <typename ArcMap, typename NodeMap> |
---|
3580 | static CombinedArcMap<const ArcMap, NodeMap> |
---|
3581 | combinedArcMap(const ArcMap& arc_map, NodeMap& node_map) { |
---|
3582 | return CombinedArcMap<const ArcMap, NodeMap>(arc_map, node_map); |
---|
3583 | } |
---|
3584 | |
---|
3585 | template <typename ArcMap, typename NodeMap> |
---|
3586 | static CombinedArcMap<ArcMap, const NodeMap> |
---|
3587 | combinedArcMap(ArcMap& arc_map, const NodeMap& node_map) { |
---|
3588 | return CombinedArcMap<ArcMap, const NodeMap>(arc_map, node_map); |
---|
3589 | } |
---|
3590 | |
---|
3591 | template <typename ArcMap, typename NodeMap> |
---|
3592 | static CombinedArcMap<const ArcMap, const NodeMap> |
---|
3593 | combinedArcMap(const ArcMap& arc_map, const NodeMap& node_map) { |
---|
3594 | return CombinedArcMap<const ArcMap, const NodeMap>(arc_map, node_map); |
---|
3595 | } |
---|
3596 | |
---|
3597 | }; |
---|
3598 | |
---|
3599 | /// \brief Returns a (read-only) SplitNodes adaptor |
---|
3600 | /// |
---|
3601 | /// This function just returns a (read-only) \ref SplitNodes adaptor. |
---|
3602 | /// \ingroup graph_adaptors |
---|
3603 | /// \relates SplitNodes |
---|
3604 | template<typename DGR> |
---|
3605 | SplitNodes<DGR> |
---|
3606 | splitNodes(const DGR& digraph) { |
---|
3607 | return SplitNodes<DGR>(digraph); |
---|
3608 | } |
---|
3609 | |
---|
3610 | #undef LEMON_SCOPE_FIX |
---|
3611 | |
---|
3612 | } //namespace lemon |
---|
3613 | |
---|
3614 | #endif //LEMON_ADAPTORS_H |
---|