[1979] | 1 | /* -*- C++ -*- |
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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) 2003-2006 |
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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_UGRAPH_ADAPTOR_H |
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| 20 | #define LEMON_UGRAPH_ADAPTOR_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 Several graph adaptors. |
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| 25 | /// |
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| 26 | ///This file contains several useful ugraph adaptor functions. |
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| 27 | /// |
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| 28 | ///\author Balazs Dezso |
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| 29 | |
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| 30 | #include <lemon/invalid.h> |
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| 31 | #include <lemon/maps.h> |
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| 32 | |
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| 33 | #include <lemon/bits/graph_adaptor_extender.h> |
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| 34 | |
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| 35 | #include <lemon/traits.h> |
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| 36 | |
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| 37 | #include <iostream> |
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| 38 | |
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| 39 | namespace lemon { |
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| 40 | |
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| 41 | /// \ingroup graph_adaptors |
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| 42 | /// |
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| 43 | /// \brief Base type for the Graph Adaptors |
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| 44 | /// |
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| 45 | /// \warning Graph adaptors are in even more experimental state than the |
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| 46 | /// other parts of the lib. Use them at you own risk. |
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| 47 | /// |
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| 48 | /// This is the base type for most of LEMON graph adaptors. |
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| 49 | /// This class implements a trivial graph adaptor i.e. it only wraps the |
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| 50 | /// functions and types of the graph. The purpose of this class is to |
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| 51 | /// make easier implementing graph adaptors. E.g. if an adaptor is |
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| 52 | /// considered which differs from the wrapped graph only in some of its |
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| 53 | /// functions or types, then it can be derived from GraphAdaptor, and only |
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| 54 | /// the differences should be implemented. |
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| 55 | /// |
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| 56 | /// \author Balazs Dezso |
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| 57 | template<typename _UGraph> |
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| 58 | class UGraphAdaptorBase { |
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| 59 | public: |
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| 60 | typedef _UGraph Graph; |
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| 61 | typedef Graph ParentGraph; |
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| 62 | |
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| 63 | protected: |
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| 64 | Graph* graph; |
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| 65 | |
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| 66 | UGraphAdaptorBase() : graph(0) {} |
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| 67 | |
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| 68 | void setGraph(Graph& _graph) { graph=&_graph; } |
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| 69 | |
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| 70 | Graph& getGraph() { return *graph; } |
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| 71 | const Graph& getGraph() const { return *graph; } |
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| 72 | |
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| 73 | public: |
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| 74 | UGraphAdaptorBase(Graph& _graph) : graph(&_graph) {} |
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| 75 | |
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| 76 | typedef typename Graph::Node Node; |
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| 77 | typedef typename Graph::Edge Edge; |
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| 78 | typedef typename Graph::UEdge UEdge; |
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| 79 | |
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| 80 | void first(Node& i) const { graph->first(i); } |
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| 81 | void first(Edge& i) const { graph->first(i); } |
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| 82 | void first(UEdge& i) const { graph->first(i); } |
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| 83 | void firstIn(Edge& i, const Node& n) const { graph->firstIn(i, n); } |
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| 84 | void firstOut(Edge& i, const Node& n ) const { graph->firstOut(i, n); } |
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| 85 | void firstInc(UEdge &i, bool &d, const Node &n) const { |
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| 86 | graph->firstInc(i, d, n); |
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| 87 | } |
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| 88 | |
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| 89 | void next(Node& i) const { graph->next(i); } |
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| 90 | void next(Edge& i) const { graph->next(i); } |
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| 91 | void next(UEdge& i) const { graph->next(i); } |
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| 92 | void nextIn(Edge& i) const { graph->nextIn(i); } |
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| 93 | void nextOut(Edge& i) const { graph->nextOut(i); } |
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| 94 | void nextInc(UEdge &i, bool &d) const { graph->nextInc(i, d); } |
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| 95 | |
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| 96 | |
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| 97 | Node source(const UEdge& e) const { return graph->source(e); } |
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| 98 | Node target(const UEdge& e) const { return graph->target(e); } |
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| 99 | |
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| 100 | Node source(const Edge& e) const { return graph->source(e); } |
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| 101 | Node target(const Edge& e) const { return graph->target(e); } |
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| 102 | |
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| 103 | typedef NodeNumTagIndicator<Graph> NodeNumTag; |
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| 104 | int nodeNum() const { return graph->nodeNum(); } |
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| 105 | |
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| 106 | typedef EdgeNumTagIndicator<Graph> EdgeNumTag; |
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| 107 | int edgeNum() const { return graph->edgeNum(); } |
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| 108 | |
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| 109 | typedef FindEdgeTagIndicator<Graph> FindEdgeTag; |
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| 110 | Edge findEdge(const Node& source, const Node& target, |
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| 111 | const Edge& prev = INVALID) { |
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| 112 | return graph->findEdge(source, target, prev); |
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| 113 | } |
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| 114 | |
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| 115 | UEdge findUEdge(const Node& source, const Node& target, |
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| 116 | const UEdge& prev = INVALID) { |
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| 117 | return graph->findUEdge(source, target, prev); |
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| 118 | } |
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| 119 | |
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| 120 | Node addNode() const { return graph->addNode(); } |
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| 121 | UEdge addEdge(const Node& source, const Node& target) const { |
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| 122 | return graph->addEdge(source, target); |
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| 123 | } |
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| 124 | |
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| 125 | void erase(const Node& i) const { graph->erase(i); } |
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| 126 | void erase(const Edge& i) const { graph->erase(i); } |
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| 127 | |
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| 128 | void clear() const { graph->clear(); } |
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| 129 | |
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| 130 | int id(const Node& v) const { return graph->id(v); } |
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| 131 | int id(const UEdge& e) const { return graph->id(e); } |
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| 132 | |
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| 133 | bool direction(const Edge& e) const { return graph->direction(e); } |
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| 134 | Edge direct(const UEdge& e, bool d) const { return graph->direct(e, d); } |
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| 135 | Edge direct(const UEdge& e, const Node& n) const { |
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| 136 | return graph->direct(e, n); |
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| 137 | } |
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| 138 | |
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| 139 | Node oppositeNode(const Node& n, const Edge& e) const { |
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| 140 | return graph->oppositeNode(n, e); |
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| 141 | } |
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| 142 | |
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| 143 | Edge oppositeEdge(const Edge& e) const { |
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| 144 | return graph->oppositeEdge(e); |
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| 145 | } |
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| 146 | |
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| 147 | |
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| 148 | template <typename _Value> |
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| 149 | class NodeMap : public Graph::template NodeMap<_Value> { |
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| 150 | public: |
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| 151 | typedef typename Graph::template NodeMap<_Value> Parent; |
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| 152 | explicit NodeMap(const UGraphAdaptorBase<Graph>& ga) |
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| 153 | : Parent(*ga.graph) {} |
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| 154 | NodeMap(const UGraphAdaptorBase<Graph>& ga, const _Value& value) |
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| 155 | : Parent(*ga.graph, value) {} |
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| 156 | |
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| 157 | NodeMap& operator=(const NodeMap& cmap) { |
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| 158 | return operator=<NodeMap>(cmap); |
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| 159 | } |
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| 160 | |
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| 161 | template <typename CMap> |
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| 162 | NodeMap& operator=(const CMap& cmap) { |
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| 163 | checkConcept<concept::ReadMap<Node, _Value>, CMap>(); |
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| 164 | const typename Parent::Graph* graph = Parent::getGraph(); |
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| 165 | Node it; |
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| 166 | for (graph->first(it); it != INVALID; graph->next(it)) { |
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| 167 | Parent::set(it, cmap[it]); |
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| 168 | } |
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| 169 | return *this; |
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| 170 | } |
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| 171 | }; |
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| 172 | |
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| 173 | template <typename _Value> |
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| 174 | class EdgeMap : public Graph::template EdgeMap<_Value> { |
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| 175 | public: |
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| 176 | typedef typename Graph::template EdgeMap<_Value> Parent; |
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| 177 | explicit EdgeMap(const UGraphAdaptorBase<Graph>& ga) |
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| 178 | : Parent(*ga.graph) {} |
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| 179 | EdgeMap(const UGraphAdaptorBase<Graph>& ga, const _Value& value) |
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| 180 | : Parent(*ga.graph, value) {} |
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| 181 | |
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| 182 | EdgeMap& operator=(const EdgeMap& cmap) { |
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| 183 | return operator=<EdgeMap>(cmap); |
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| 184 | } |
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| 185 | |
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| 186 | template <typename CMap> |
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| 187 | EdgeMap& operator=(const CMap& cmap) { |
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| 188 | checkConcept<concept::ReadMap<Edge, _Value>, CMap>(); |
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| 189 | const typename Parent::Graph* graph = Parent::getGraph(); |
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| 190 | Edge it; |
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| 191 | for (graph->first(it); it != INVALID; graph->next(it)) { |
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| 192 | Parent::set(it, cmap[it]); |
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| 193 | } |
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| 194 | return *this; |
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| 195 | } |
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| 196 | }; |
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| 197 | |
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| 198 | template <typename _Value> |
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| 199 | class UEdgeMap : public Graph::template UEdgeMap<_Value> { |
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| 200 | public: |
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| 201 | typedef typename Graph::template UEdgeMap<_Value> Parent; |
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| 202 | explicit UEdgeMap(const UGraphAdaptorBase<Graph>& ga) |
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| 203 | : Parent(*ga.graph) {} |
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| 204 | UEdgeMap(const UGraphAdaptorBase<Graph>& ga, const _Value& value) |
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| 205 | : Parent(*ga.graph, value) {} |
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| 206 | |
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| 207 | UEdgeMap& operator=(const UEdgeMap& cmap) { |
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| 208 | return operator=<UEdgeMap>(cmap); |
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| 209 | } |
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| 210 | |
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| 211 | template <typename CMap> |
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| 212 | UEdgeMap& operator=(const CMap& cmap) { |
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| 213 | checkConcept<concept::ReadMap<UEdge, _Value>, CMap>(); |
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| 214 | const typename Parent::Graph* graph = Parent::getGraph(); |
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| 215 | UEdge it; |
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| 216 | for (graph->first(it); it != INVALID; graph->next(it)) { |
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| 217 | Parent::set(it, cmap[it]); |
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| 218 | } |
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| 219 | return *this; |
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| 220 | } |
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| 221 | }; |
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| 222 | |
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| 223 | }; |
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| 224 | |
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| 225 | /// \ingroup graph_adaptors |
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| 226 | template <typename _UGraph> |
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| 227 | class UGraphAdaptor |
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| 228 | : public UGraphAdaptorExtender< UGraphAdaptorBase<_UGraph> > { |
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| 229 | public: |
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| 230 | typedef _UGraph Graph; |
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| 231 | typedef UGraphAdaptorExtender<UGraphAdaptorBase<_UGraph> > Parent; |
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| 232 | protected: |
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| 233 | UGraphAdaptor() : Parent() {} |
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| 234 | |
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| 235 | public: |
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| 236 | explicit UGraphAdaptor(Graph& _graph) { setGraph(_graph); } |
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| 237 | }; |
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| 238 | |
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| 239 | template <typename _UGraph, typename NodeFilterMap, |
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| 240 | typename UEdgeFilterMap, bool checked = true> |
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| 241 | class SubUGraphAdaptorBase : public UGraphAdaptorBase<_UGraph> { |
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| 242 | public: |
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| 243 | typedef _UGraph Graph; |
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| 244 | typedef UGraphAdaptorBase<_UGraph> Parent; |
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| 245 | protected: |
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| 246 | |
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| 247 | NodeFilterMap* node_filter_map; |
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| 248 | UEdgeFilterMap* uedge_filter_map; |
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| 249 | |
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| 250 | SubUGraphAdaptorBase() |
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| 251 | : Parent(), node_filter_map(0), uedge_filter_map(0) { } |
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| 252 | |
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| 253 | void setNodeFilterMap(NodeFilterMap& _node_filter_map) { |
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| 254 | node_filter_map=&_node_filter_map; |
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| 255 | } |
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| 256 | void setUEdgeFilterMap(UEdgeFilterMap& _uedge_filter_map) { |
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| 257 | uedge_filter_map=&_uedge_filter_map; |
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| 258 | } |
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| 259 | |
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| 260 | public: |
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| 261 | |
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| 262 | typedef typename Parent::Node Node; |
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| 263 | typedef typename Parent::Edge Edge; |
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| 264 | typedef typename Parent::UEdge UEdge; |
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| 265 | |
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| 266 | void first(Node& i) const { |
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| 267 | Parent::first(i); |
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| 268 | while (i!=INVALID && !(*node_filter_map)[i]) Parent::next(i); |
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| 269 | } |
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| 270 | |
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| 271 | void first(Edge& i) const { |
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| 272 | Parent::first(i); |
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| 273 | while (i!=INVALID && (!(*uedge_filter_map)[i] |
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| 274 | || !(*node_filter_map)[Parent::source(i)] |
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| 275 | || !(*node_filter_map)[Parent::target(i)])) Parent::next(i); |
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| 276 | } |
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| 277 | |
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| 278 | void first(UEdge& i) const { |
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| 279 | Parent::first(i); |
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| 280 | while (i!=INVALID && (!(*uedge_filter_map)[i] |
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| 281 | || !(*node_filter_map)[Parent::source(i)] |
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| 282 | || !(*node_filter_map)[Parent::target(i)])) Parent::next(i); |
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| 283 | } |
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| 284 | |
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| 285 | void firstIn(Edge& i, const Node& n) const { |
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| 286 | Parent::firstIn(i, n); |
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| 287 | while (i!=INVALID && (!(*uedge_filter_map)[i] |
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| 288 | || !(*node_filter_map)[Parent::source(i)])) Parent::nextIn(i); |
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| 289 | } |
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| 290 | |
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| 291 | void firstOut(Edge& i, const Node& n) const { |
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| 292 | Parent::firstOut(i, n); |
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| 293 | while (i!=INVALID && (!(*uedge_filter_map)[i] |
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| 294 | || !(*node_filter_map)[Parent::target(i)])) Parent::nextOut(i); |
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| 295 | } |
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| 296 | |
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| 297 | void firstInc(UEdge& i, bool& d, const Node& n) const { |
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| 298 | Parent::firstInc(i, d, n); |
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| 299 | while (i!=INVALID && (!(*uedge_filter_map)[i] |
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| 300 | || !(*node_filter_map)[Parent::target(i)])) Parent::nextInc(i, d); |
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| 301 | } |
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| 302 | |
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| 303 | void next(Node& i) const { |
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| 304 | Parent::next(i); |
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| 305 | while (i!=INVALID && !(*node_filter_map)[i]) Parent::next(i); |
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| 306 | } |
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| 307 | |
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| 308 | void next(Edge& i) const { |
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| 309 | Parent::next(i); |
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| 310 | while (i!=INVALID && (!(*uedge_filter_map)[i] |
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| 311 | || !(*node_filter_map)[Parent::source(i)] |
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| 312 | || !(*node_filter_map)[Parent::target(i)])) Parent::next(i); |
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| 313 | } |
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| 314 | |
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| 315 | void next(UEdge& i) const { |
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| 316 | Parent::next(i); |
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| 317 | while (i!=INVALID && (!(*uedge_filter_map)[i] |
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| 318 | || !(*node_filter_map)[Parent::source(i)] |
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| 319 | || !(*node_filter_map)[Parent::target(i)])) Parent::next(i); |
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| 320 | } |
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| 321 | |
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| 322 | void nextIn(Edge& i) const { |
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| 323 | Parent::nextIn(i); |
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| 324 | while (i!=INVALID && (!(*uedge_filter_map)[i] |
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| 325 | || !(*node_filter_map)[Parent::source(i)])) Parent::nextIn(i); |
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| 326 | } |
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| 327 | |
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| 328 | void nextOut(Edge& i) const { |
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| 329 | Parent::nextOut(i); |
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| 330 | while (i!=INVALID && (!(*uedge_filter_map)[i] |
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| 331 | || !(*node_filter_map)[Parent::target(i)])) Parent::nextOut(i); |
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| 332 | } |
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| 333 | |
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| 334 | void nextInc(UEdge& i, bool& d) const { |
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| 335 | Parent::nextInc(i, d); |
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| 336 | while (i!=INVALID && (!(*uedge_filter_map)[i] |
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| 337 | || !(*node_filter_map)[Parent::source(i)])) Parent::nextInc(i, d); |
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| 338 | } |
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| 339 | |
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| 340 | ///\e |
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| 341 | |
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| 342 | /// This function hides \c n in the graph, i.e. the iteration |
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| 343 | /// jumps over it. This is done by simply setting the value of \c n |
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| 344 | /// to be false in the corresponding node-map. |
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| 345 | void hide(const Node& n) const { node_filter_map->set(n, false); } |
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| 346 | |
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| 347 | ///\e |
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| 348 | |
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| 349 | /// This function hides \c e in the graph, i.e. the iteration |
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| 350 | /// jumps over it. This is done by simply setting the value of \c e |
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| 351 | /// to be false in the corresponding edge-map. |
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| 352 | void hide(const UEdge& e) const { uedge_filter_map->set(e, false); } |
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| 353 | |
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| 354 | ///\e |
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| 355 | |
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| 356 | /// The value of \c n is set to be true in the node-map which stores |
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| 357 | /// hide information. If \c n was hidden previuosly, then it is shown |
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| 358 | /// again |
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| 359 | void unHide(const Node& n) const { node_filter_map->set(n, true); } |
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| 360 | |
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| 361 | ///\e |
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| 362 | |
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| 363 | /// The value of \c e is set to be true in the edge-map which stores |
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| 364 | /// hide information. If \c e was hidden previuosly, then it is shown |
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| 365 | /// again |
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| 366 | void unHide(const UEdge& e) const { uedge_filter_map->set(e, true); } |
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| 367 | |
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| 368 | /// Returns true if \c n is hidden. |
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| 369 | |
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| 370 | ///\e |
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| 371 | /// |
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| 372 | bool hidden(const Node& n) const { return !(*node_filter_map)[n]; } |
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| 373 | |
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| 374 | /// Returns true if \c n is hidden. |
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| 375 | |
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| 376 | ///\e |
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| 377 | /// |
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| 378 | bool hidden(const UEdge& e) const { return !(*uedge_filter_map)[e]; } |
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| 379 | |
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| 380 | typedef False NodeNumTag; |
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| 381 | typedef False EdgeNumTag; |
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| 382 | }; |
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| 383 | |
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| 384 | template <typename _UGraph, typename NodeFilterMap, typename UEdgeFilterMap> |
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| 385 | class SubUGraphAdaptorBase<_UGraph, NodeFilterMap, UEdgeFilterMap, false> |
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| 386 | : public UGraphAdaptorBase<_UGraph> { |
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| 387 | public: |
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| 388 | typedef _UGraph Graph; |
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| 389 | typedef UGraphAdaptorBase<_UGraph> Parent; |
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| 390 | protected: |
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| 391 | NodeFilterMap* node_filter_map; |
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| 392 | UEdgeFilterMap* uedge_filter_map; |
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| 393 | SubUGraphAdaptorBase() : Parent(), |
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| 394 | node_filter_map(0), uedge_filter_map(0) { } |
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| 395 | |
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| 396 | void setNodeFilterMap(NodeFilterMap& _node_filter_map) { |
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| 397 | node_filter_map=&_node_filter_map; |
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| 398 | } |
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| 399 | void setUEdgeFilterMap(UEdgeFilterMap& _uedge_filter_map) { |
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| 400 | uedge_filter_map=&_uedge_filter_map; |
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| 401 | } |
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| 402 | |
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| 403 | public: |
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| 404 | |
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| 405 | typedef typename Parent::Node Node; |
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| 406 | typedef typename Parent::Edge Edge; |
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| 407 | typedef typename Parent::UEdge UEdge; |
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| 408 | |
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| 409 | void first(Node& i) const { |
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| 410 | Parent::first(i); |
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| 411 | while (i!=INVALID && !(*node_filter_map)[i]) Parent::next(i); |
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| 412 | } |
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| 413 | |
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| 414 | void first(Edge& i) const { |
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| 415 | Parent::first(i); |
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| 416 | while (i!=INVALID && !(*uedge_filter_map)[i]) Parent::next(i); |
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| 417 | } |
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| 418 | |
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| 419 | void first(UEdge& i) const { |
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| 420 | Parent::first(i); |
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| 421 | while (i!=INVALID && !(*uedge_filter_map)[i]) Parent::next(i); |
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| 422 | } |
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| 423 | |
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| 424 | void firstIn(Edge& i, const Node& n) const { |
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| 425 | Parent::firstIn(i, n); |
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| 426 | while (i!=INVALID && !(*uedge_filter_map)[i]) Parent::nextIn(i); |
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| 427 | } |
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| 428 | |
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| 429 | void firstOut(Edge& i, const Node& n) const { |
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| 430 | Parent::firstOut(i, n); |
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| 431 | while (i!=INVALID && !(*uedge_filter_map)[i]) Parent::nextOut(i); |
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| 432 | } |
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| 433 | |
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| 434 | void firstInc(UEdge& i, bool& d, const Node& n) const { |
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| 435 | Parent::firstInc(i, d, n); |
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| 436 | while (i!=INVALID && !(*uedge_filter_map)[i]) Parent::nextInc(i, d); |
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| 437 | } |
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| 438 | |
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| 439 | void next(Node& i) const { |
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| 440 | Parent::next(i); |
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| 441 | while (i!=INVALID && !(*node_filter_map)[i]) Parent::next(i); |
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| 442 | } |
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| 443 | void next(Edge& i) const { |
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| 444 | Parent::next(i); |
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| 445 | while (i!=INVALID && !(*uedge_filter_map)[i]) Parent::next(i); |
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| 446 | } |
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| 447 | void next(UEdge& i) const { |
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| 448 | Parent::next(i); |
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| 449 | while (i!=INVALID && !(*uedge_filter_map)[i]) Parent::next(i); |
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| 450 | } |
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| 451 | void nextIn(Edge& i) const { |
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| 452 | Parent::nextIn(i); |
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| 453 | while (i!=INVALID && !(*uedge_filter_map)[i]) Parent::nextIn(i); |
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| 454 | } |
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| 455 | |
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| 456 | void nextOut(Edge& i) const { |
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| 457 | Parent::nextOut(i); |
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| 458 | while (i!=INVALID && !(*uedge_filter_map)[i]) Parent::nextOut(i); |
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| 459 | } |
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| 460 | void nextInc(UEdge& i, bool& d) const { |
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| 461 | Parent::nextInc(i, d); |
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| 462 | while (i!=INVALID && !(*uedge_filter_map)[i]) Parent::nextInc(i, d); |
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| 463 | } |
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| 464 | |
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| 465 | ///\e |
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| 466 | |
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| 467 | /// This function hides \c n in the graph, i.e. the iteration |
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| 468 | /// jumps over it. This is done by simply setting the value of \c n |
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| 469 | /// to be false in the corresponding node-map. |
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| 470 | void hide(const Node& n) const { node_filter_map->set(n, false); } |
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| 471 | |
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| 472 | ///\e |
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| 473 | |
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| 474 | /// This function hides \c e in the graph, i.e. the iteration |
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| 475 | /// jumps over it. This is done by simply setting the value of \c e |
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| 476 | /// to be false in the corresponding edge-map. |
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| 477 | void hide(const UEdge& e) const { uedge_filter_map->set(e, false); } |
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| 478 | |
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| 479 | ///\e |
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| 480 | |
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| 481 | /// The value of \c n is set to be true in the node-map which stores |
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| 482 | /// hide information. If \c n was hidden previuosly, then it is shown |
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| 483 | /// again |
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| 484 | void unHide(const Node& n) const { node_filter_map->set(n, true); } |
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| 485 | |
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| 486 | ///\e |
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| 487 | |
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| 488 | /// The value of \c e is set to be true in the edge-map which stores |
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| 489 | /// hide information. If \c e was hidden previuosly, then it is shown |
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| 490 | /// again |
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| 491 | void unHide(const UEdge& e) const { uedge_filter_map->set(e, true); } |
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| 492 | |
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| 493 | /// Returns true if \c n is hidden. |
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| 494 | |
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| 495 | ///\e |
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| 496 | /// |
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| 497 | bool hidden(const Node& n) const { return !(*node_filter_map)[n]; } |
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| 498 | |
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| 499 | /// Returns true if \c n is hidden. |
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| 500 | |
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| 501 | ///\e |
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| 502 | /// |
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| 503 | bool hidden(const UEdge& e) const { return !(*uedge_filter_map)[e]; } |
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| 504 | |
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| 505 | typedef False NodeNumTag; |
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| 506 | typedef False EdgeNumTag; |
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| 507 | }; |
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| 508 | |
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| 509 | /// \ingroup graph_adaptors |
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| 510 | /// |
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| 511 | /// \brief A graph adaptor for hiding nodes and edges from an undirected |
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| 512 | /// graph. |
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| 513 | /// |
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| 514 | /// SubUGraphAdaptor shows the undirected graph with filtered node-set and |
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| 515 | /// edge-set. If the \c checked parameter is true then it filters the edgeset |
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| 516 | /// to do not get invalid edges without source or target. |
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| 517 | /// |
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| 518 | /// If the \c checked template parameter is false then we have to note that |
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| 519 | /// the node-iterator cares only the filter on the node-set, and the |
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| 520 | /// edge-iterator cares only the filter on the edge-set. |
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| 521 | /// This way the edge-map |
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| 522 | /// should filter all edges which's source or target is filtered by the |
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| 523 | /// node-filter. |
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| 524 | /// |
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| 525 | /// Note that \c n is of type \c SubGA::NodeIt, but it can be converted to |
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| 526 | /// \c Graph::Node that is why \c g.id(n) can be applied. |
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| 527 | /// |
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| 528 | template<typename _UGraph, typename NodeFilterMap, |
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| 529 | typename UEdgeFilterMap, bool checked = true> |
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| 530 | class SubUGraphAdaptor : |
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| 531 | public UGraphAdaptorExtender< |
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| 532 | SubUGraphAdaptorBase<_UGraph, NodeFilterMap, UEdgeFilterMap, checked> > { |
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| 533 | public: |
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| 534 | typedef _UGraph Graph; |
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| 535 | typedef UGraphAdaptorExtender< |
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| 536 | SubUGraphAdaptorBase<_UGraph, NodeFilterMap, UEdgeFilterMap> > Parent; |
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| 537 | protected: |
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| 538 | SubUGraphAdaptor() { } |
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| 539 | public: |
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| 540 | SubUGraphAdaptor(Graph& _graph, NodeFilterMap& _node_filter_map, |
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| 541 | UEdgeFilterMap& _uedge_filter_map) { |
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| 542 | setGraph(_graph); |
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| 543 | setNodeFilterMap(_node_filter_map); |
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| 544 | setUEdgeFilterMap(_uedge_filter_map); |
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| 545 | } |
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| 546 | }; |
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| 547 | |
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[1980] | 548 | template<typename UGraph, typename NodeFilterMap, typename EdgeFilterMap> |
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| 549 | SubUGraphAdaptor<const UGraph, NodeFilterMap, EdgeFilterMap> |
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| 550 | subUGraphAdaptor(const UGraph& graph, |
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| 551 | NodeFilterMap& nfm, EdgeFilterMap& efm) { |
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| 552 | return SubUGraphAdaptor<const UGraph, NodeFilterMap, EdgeFilterMap> |
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| 553 | (graph, nfm, efm); |
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| 554 | } |
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| 555 | |
---|
| 556 | template<typename UGraph, typename NodeFilterMap, typename EdgeFilterMap> |
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| 557 | SubUGraphAdaptor<const UGraph, const NodeFilterMap, EdgeFilterMap> |
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| 558 | subUGraphAdaptor(const UGraph& graph, |
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| 559 | NodeFilterMap& nfm, EdgeFilterMap& efm) { |
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| 560 | return SubUGraphAdaptor<const UGraph, const NodeFilterMap, EdgeFilterMap> |
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| 561 | (graph, nfm, efm); |
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| 562 | } |
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| 563 | |
---|
| 564 | template<typename UGraph, typename NodeFilterMap, typename EdgeFilterMap> |
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| 565 | SubUGraphAdaptor<const UGraph, NodeFilterMap, const EdgeFilterMap> |
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| 566 | subUGraphAdaptor(const UGraph& graph, |
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| 567 | NodeFilterMap& nfm, EdgeFilterMap& efm) { |
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| 568 | return SubUGraphAdaptor<const UGraph, NodeFilterMap, const EdgeFilterMap> |
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| 569 | (graph, nfm, efm); |
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| 570 | } |
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| 571 | |
---|
| 572 | template<typename UGraph, typename NodeFilterMap, typename EdgeFilterMap> |
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| 573 | SubUGraphAdaptor<const UGraph, const NodeFilterMap, const EdgeFilterMap> |
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| 574 | subUGraphAdaptor(const UGraph& graph, |
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| 575 | NodeFilterMap& nfm, EdgeFilterMap& efm) { |
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| 576 | return SubUGraphAdaptor<const UGraph, const NodeFilterMap, |
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| 577 | const EdgeFilterMap>(graph, nfm, efm); |
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| 578 | } |
---|
| 579 | |
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[1979] | 580 | /// \ingroup graph_adaptors |
---|
| 581 | /// |
---|
[1980] | 582 | /// \brief An adaptor for hiding nodes from an undirected graph. |
---|
[1979] | 583 | /// |
---|
| 584 | /// |
---|
| 585 | /// An adaptor for hiding nodes from an undirected graph. |
---|
| 586 | /// This adaptor specializes SubUGraphAdaptor in the way that only |
---|
| 587 | /// the node-set |
---|
| 588 | /// can be filtered. In usual case the checked parameter is true, we get the |
---|
| 589 | /// induced subgraph. But if the checked parameter is false then we can only |
---|
| 590 | /// filter only isolated nodes. |
---|
| 591 | template<typename _UGraph, typename NodeFilterMap, bool checked = true> |
---|
| 592 | class NodeSubUGraphAdaptor : |
---|
| 593 | public SubUGraphAdaptor<_UGraph, NodeFilterMap, |
---|
| 594 | ConstMap<typename _UGraph::UEdge, bool>, checked> { |
---|
| 595 | public: |
---|
| 596 | typedef SubUGraphAdaptor<_UGraph, NodeFilterMap, |
---|
| 597 | ConstMap<typename _UGraph::UEdge, bool> > Parent; |
---|
| 598 | typedef _UGraph Graph; |
---|
| 599 | protected: |
---|
| 600 | ConstMap<typename _UGraph::Edge, bool> const_true_map; |
---|
| 601 | public: |
---|
| 602 | NodeSubUGraphAdaptor(Graph& _graph, NodeFilterMap& _node_filter_map) : |
---|
| 603 | Parent(), const_true_map(true) { |
---|
| 604 | Parent::setGraph(_graph); |
---|
| 605 | Parent::setNodeFilterMap(_node_filter_map); |
---|
| 606 | Parent::setUEdgeFilterMap(const_true_map); |
---|
| 607 | } |
---|
| 608 | }; |
---|
| 609 | |
---|
| 610 | template<typename UGraph, typename NodeFilterMap> |
---|
| 611 | NodeSubUGraphAdaptor<const UGraph, NodeFilterMap> |
---|
| 612 | nodeSubUGraphAdaptor(const UGraph& graph, NodeFilterMap& nfm) { |
---|
| 613 | return NodeSubUGraphAdaptor<const UGraph, NodeFilterMap>(graph, nfm); |
---|
| 614 | } |
---|
| 615 | |
---|
| 616 | template<typename UGraph, typename NodeFilterMap> |
---|
| 617 | NodeSubUGraphAdaptor<const UGraph, const NodeFilterMap> |
---|
| 618 | nodeSubUGraphAdaptor(const UGraph& graph, const NodeFilterMap& nfm) { |
---|
| 619 | return NodeSubUGraphAdaptor<const UGraph, const NodeFilterMap>(graph, nfm); |
---|
| 620 | } |
---|
| 621 | |
---|
| 622 | |
---|
| 623 | /// \brief An adaptor for hiding undirected edges from an undirected graph. |
---|
| 624 | /// |
---|
| 625 | /// \warning Graph adaptors are in even more experimental state |
---|
| 626 | /// than the other parts of the lib. Use them at you own risk. |
---|
| 627 | /// |
---|
| 628 | /// An adaptor for hiding undirected edges from an undirected graph. |
---|
| 629 | /// This adaptor specializes SubUGraphAdaptor in the way that |
---|
| 630 | /// only the edge-set |
---|
| 631 | /// can be filtered. |
---|
| 632 | template<typename _UGraph, typename UEdgeFilterMap> |
---|
| 633 | class EdgeSubUGraphAdaptor : |
---|
| 634 | public SubUGraphAdaptor<_UGraph, ConstMap<typename _UGraph::Node,bool>, |
---|
| 635 | UEdgeFilterMap, false> { |
---|
| 636 | public: |
---|
| 637 | typedef SubUGraphAdaptor<_UGraph, ConstMap<typename _UGraph::Node,bool>, |
---|
| 638 | UEdgeFilterMap, false> Parent; |
---|
| 639 | typedef _UGraph Graph; |
---|
| 640 | protected: |
---|
| 641 | ConstMap<typename Graph::Node, bool> const_true_map; |
---|
| 642 | public: |
---|
| 643 | EdgeSubUGraphAdaptor(Graph& _graph, UEdgeFilterMap& _uedge_filter_map) : |
---|
| 644 | Parent(), const_true_map(true) { |
---|
| 645 | Parent::setGraph(_graph); |
---|
| 646 | Parent::setNodeFilterMap(const_true_map); |
---|
| 647 | Parent::setUEdgeFilterMap(_uedge_filter_map); |
---|
| 648 | } |
---|
| 649 | }; |
---|
| 650 | |
---|
| 651 | template<typename UGraph, typename EdgeFilterMap> |
---|
| 652 | EdgeSubUGraphAdaptor<const UGraph, EdgeFilterMap> |
---|
| 653 | edgeSubUGraphAdaptor(const UGraph& graph, EdgeFilterMap& efm) { |
---|
| 654 | return EdgeSubUGraphAdaptor<const UGraph, EdgeFilterMap>(graph, efm); |
---|
| 655 | } |
---|
| 656 | |
---|
| 657 | template<typename UGraph, typename EdgeFilterMap> |
---|
| 658 | EdgeSubUGraphAdaptor<const UGraph, const EdgeFilterMap> |
---|
| 659 | edgeSubUGraphAdaptor(const UGraph& graph, const EdgeFilterMap& efm) { |
---|
| 660 | return EdgeSubUGraphAdaptor<const UGraph, const EdgeFilterMap>(graph, efm); |
---|
| 661 | } |
---|
| 662 | |
---|
| 663 | template <typename _UGraph, typename _DirectionMap> |
---|
[1980] | 664 | class DirUGraphAdaptorBase { |
---|
[1979] | 665 | public: |
---|
| 666 | |
---|
| 667 | typedef _UGraph Graph; |
---|
| 668 | typedef _DirectionMap DirectionMap; |
---|
| 669 | |
---|
| 670 | typedef typename _UGraph::Node Node; |
---|
| 671 | typedef typename _UGraph::UEdge Edge; |
---|
| 672 | |
---|
| 673 | void first(Node& i) const { graph->first(i); } |
---|
| 674 | void first(Edge& i) const { graph->first(i); } |
---|
| 675 | void firstIn(Edge& i, const Node& n) const { |
---|
| 676 | bool d; |
---|
| 677 | graph->firstInc(i, d, n); |
---|
| 678 | while (i != INVALID && d == (*direction)[i]) graph->nextInc(i, d); |
---|
| 679 | } |
---|
| 680 | void firstOut(Edge& i, const Node& n ) const { |
---|
| 681 | bool d; |
---|
| 682 | graph->firstInc(i, d, n); |
---|
| 683 | while (i != INVALID && d != (*direction)[i]) graph->nextInc(i, d); |
---|
| 684 | } |
---|
| 685 | |
---|
| 686 | void next(Node& i) const { graph->next(i); } |
---|
| 687 | void next(Edge& i) const { graph->next(i); } |
---|
| 688 | void nextIn(Edge& i) const { |
---|
| 689 | bool d = !(*direction)[i]; |
---|
| 690 | graph->nextInc(i, d); |
---|
| 691 | while (i != INVALID && d == (*direction)[i]) graph->nextInc(i, d); |
---|
| 692 | } |
---|
| 693 | void nextOut(Edge& i) const { |
---|
| 694 | bool d = (*direction)[i]; |
---|
| 695 | graph->nextInc(i, d); |
---|
| 696 | while (i != INVALID && d != (*direction)[i]) graph->nextInc(i, d); |
---|
| 697 | } |
---|
| 698 | |
---|
| 699 | Node source(const Edge& e) const { |
---|
| 700 | return (*direction)[e] ? graph->source(e) : graph->target(e); |
---|
| 701 | } |
---|
| 702 | Node target(const Edge& e) const { |
---|
| 703 | return (*direction)[e] ? graph->target(e) : graph->source(e); |
---|
| 704 | } |
---|
| 705 | |
---|
| 706 | typedef NodeNumTagIndicator<Graph> NodeNumTag; |
---|
| 707 | int nodeNum() const { return graph->nodeNum(); } |
---|
| 708 | |
---|
| 709 | typedef EdgeNumTagIndicator<Graph> EdgeNumTag; |
---|
| 710 | int edgeNum() const { return graph->uEdgeNum(); } |
---|
| 711 | |
---|
| 712 | typedef FindEdgeTagIndicator<Graph> FindEdgeTag; |
---|
| 713 | Edge findEdge(const Node& source, const Node& target, |
---|
| 714 | const Edge& prev = INVALID) { |
---|
| 715 | Edge edge = prev; |
---|
| 716 | bool d = edge == INVALID ? true : (*direction)[edge]; |
---|
| 717 | if (d) { |
---|
| 718 | edge = graph->findUEdge(source, target, edge); |
---|
| 719 | while (edge != INVALID && !(*direction)[edge]) { |
---|
| 720 | graph->findUEdge(source, target, edge); |
---|
| 721 | } |
---|
| 722 | if (edge != INVALID) return edge; |
---|
| 723 | } |
---|
| 724 | graph->findUEdge(target, source, edge); |
---|
| 725 | while (edge != INVALID && (*direction)[edge]) { |
---|
| 726 | graph->findUEdge(source, target, edge); |
---|
| 727 | } |
---|
| 728 | return edge; |
---|
| 729 | } |
---|
| 730 | |
---|
| 731 | Node addNode() const { |
---|
| 732 | return Node(graph->addNode()); |
---|
| 733 | } |
---|
| 734 | |
---|
| 735 | Edge addEdge(const Node& source, const Node& target) const { |
---|
| 736 | Edge edge = graph->addEdge(source, target); |
---|
| 737 | (*direction)[edge] = graph->source(edge) == source; |
---|
| 738 | return edge; |
---|
| 739 | } |
---|
| 740 | |
---|
| 741 | void erase(const Node& i) const { graph->erase(i); } |
---|
| 742 | void erase(const Edge& i) const { graph->erase(i); } |
---|
| 743 | |
---|
| 744 | void clear() const { graph->clear(); } |
---|
| 745 | |
---|
| 746 | int id(const Node& v) const { return graph->id(v); } |
---|
| 747 | int id(const Edge& e) const { return graph->id(e); } |
---|
| 748 | |
---|
| 749 | void reverseEdge(const Edge& edge) { |
---|
| 750 | direction->set(edge, !(*direction)[edge]); |
---|
| 751 | } |
---|
| 752 | |
---|
| 753 | template <typename _Value> |
---|
| 754 | class NodeMap : public _UGraph::template NodeMap<_Value> { |
---|
| 755 | public: |
---|
| 756 | typedef typename _UGraph::template NodeMap<_Value> Parent; |
---|
[1980] | 757 | explicit NodeMap(const DirUGraphAdaptorBase& ga) |
---|
[1979] | 758 | : Parent(*ga.graph) { } |
---|
[1980] | 759 | NodeMap(const DirUGraphAdaptorBase& ga, const _Value& value) |
---|
[1979] | 760 | : Parent(*ga.graph, value) { } |
---|
| 761 | }; |
---|
| 762 | |
---|
| 763 | template <typename _Value> |
---|
| 764 | class EdgeMap : public _UGraph::template UEdgeMap<_Value> { |
---|
| 765 | public: |
---|
[1980] | 766 | typedef typename _UGraph::template UEdgeMap<_Value> Parent; |
---|
| 767 | explicit EdgeMap(const DirUGraphAdaptorBase& ga) |
---|
[1979] | 768 | : Parent(*ga.graph) { } |
---|
[1980] | 769 | EdgeMap(const DirUGraphAdaptorBase& ga, const _Value& value) |
---|
[1979] | 770 | : Parent(*ga.graph, value) { } |
---|
| 771 | }; |
---|
| 772 | |
---|
| 773 | |
---|
| 774 | |
---|
| 775 | protected: |
---|
| 776 | Graph* graph; |
---|
| 777 | DirectionMap* direction; |
---|
| 778 | |
---|
| 779 | void setDirectionMap(DirectionMap& _direction) { |
---|
| 780 | direction = &_direction; |
---|
| 781 | } |
---|
| 782 | |
---|
| 783 | void setGraph(Graph& _graph) { |
---|
| 784 | graph = &_graph; |
---|
| 785 | } |
---|
| 786 | |
---|
| 787 | }; |
---|
| 788 | |
---|
| 789 | |
---|
[1980] | 790 | /// \ingroup graph_adaptors |
---|
| 791 | /// \brief A directed graph is made from a undirected graph by an adaptor |
---|
| 792 | /// |
---|
| 793 | /// This adaptor gives a direction for each uedge in the undirected graph. |
---|
| 794 | /// The direction of the edges stored in the DirectionMap. This map is |
---|
| 795 | /// a bool map on the undirected edges. If the uedge is mapped to true |
---|
| 796 | /// then the direction of the directed edge will be the same as the |
---|
| 797 | /// default direction of the uedge. The edges can be easily reverted |
---|
| 798 | /// by the reverseEdge member in the adaptor. |
---|
| 799 | template<typename _Graph, |
---|
| 800 | typename DirectionMap = typename _Graph::template UEdgeMap<bool> > |
---|
| 801 | class DirUGraphAdaptor : |
---|
[1979] | 802 | public GraphAdaptorExtender< |
---|
[1980] | 803 | DirUGraphAdaptorBase<_Graph, DirectionMap> > { |
---|
[1979] | 804 | public: |
---|
| 805 | typedef _Graph Graph; |
---|
| 806 | typedef GraphAdaptorExtender< |
---|
[1980] | 807 | DirUGraphAdaptorBase<_Graph, DirectionMap> > Parent; |
---|
[1979] | 808 | protected: |
---|
[1980] | 809 | DirUGraphAdaptor() { } |
---|
[1979] | 810 | public: |
---|
[1980] | 811 | DirUGraphAdaptor(_Graph& _graph, DirectionMap& _direction_map) { |
---|
[1979] | 812 | setGraph(_graph); |
---|
| 813 | setDirectionMap(_direction_map); |
---|
| 814 | } |
---|
| 815 | }; |
---|
| 816 | |
---|
| 817 | template<typename UGraph, typename DirectionMap> |
---|
[1980] | 818 | DirUGraphAdaptor<const UGraph, DirectionMap> |
---|
| 819 | dirUGraphAdaptor(const UGraph& graph, DirectionMap& dm) { |
---|
| 820 | return DirUGraphAdaptor<const UGraph, DirectionMap>(graph, dm); |
---|
[1979] | 821 | } |
---|
| 822 | |
---|
| 823 | template<typename UGraph, typename DirectionMap> |
---|
[1980] | 824 | DirUGraphAdaptor<const UGraph, const DirectionMap> |
---|
| 825 | dirUGraphAdaptor(const UGraph& graph, const DirectionMap& dm) { |
---|
| 826 | return DirUGraphAdaptor<const UGraph, const DirectionMap>(graph, dm); |
---|
[1979] | 827 | } |
---|
| 828 | |
---|
| 829 | } |
---|
| 830 | |
---|
| 831 | #endif |
---|