1 | /* -*- C++ -*- |
---|
2 | * |
---|
3 | * This file is a part of LEMON, a generic C++ optimization library |
---|
4 | * |
---|
5 | * Copyright (C) 2003-2006 |
---|
6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
---|
8 | * |
---|
9 | * Permission to use, modify and distribute this software is granted |
---|
10 | * provided that this copyright notice appears in all copies. For |
---|
11 | * precise terms see the accompanying LICENSE file. |
---|
12 | * |
---|
13 | * This software is provided "AS IS" with no warranty of any kind, |
---|
14 | * express or implied, and with no claim as to its suitability for any |
---|
15 | * purpose. |
---|
16 | * |
---|
17 | */ |
---|
18 | |
---|
19 | #include <lemon/list_graph.h> |
---|
20 | #include <lemon/topology.h> |
---|
21 | #include <lemon/graph_to_eps.h> |
---|
22 | #include <lemon/graph_reader.h> |
---|
23 | #include <lemon/xy.h> |
---|
24 | |
---|
25 | #include <iostream> |
---|
26 | |
---|
27 | #include <cstdlib> |
---|
28 | #include <ctime> |
---|
29 | |
---|
30 | /// \ingroup demos |
---|
31 | /// \file |
---|
32 | /// \brief Demo what shows the result of some topology functions. |
---|
33 | /// |
---|
34 | /// Demo what shows the result of some topology functions. |
---|
35 | /// |
---|
36 | /// \include topology_demo.cc |
---|
37 | |
---|
38 | using namespace lemon; |
---|
39 | using namespace std; |
---|
40 | |
---|
41 | |
---|
42 | Color color(bool val) { |
---|
43 | return val ? Color(1.0, 0.0, 0.0) : Color(0.0, 0.0, 1.0); |
---|
44 | } |
---|
45 | |
---|
46 | |
---|
47 | void drawConnectedComponents() { |
---|
48 | typedef ListUGraph Graph; |
---|
49 | typedef Graph::Node Node; |
---|
50 | |
---|
51 | Graph graph; |
---|
52 | Graph::NodeMap<xy<double> > coords(graph); |
---|
53 | |
---|
54 | UGraphReader<Graph>("u_components.lgf", graph). |
---|
55 | readNodeMap("coordinates_x", xMap(coords)). |
---|
56 | readNodeMap("coordinates_y", yMap(coords)). |
---|
57 | run(); |
---|
58 | |
---|
59 | ColorSet colorSet; |
---|
60 | |
---|
61 | Graph::NodeMap<int> compMap(graph); |
---|
62 | connectedComponents(graph, compMap); |
---|
63 | |
---|
64 | graphToEps(graph, "connected_components.eps").undirected(). |
---|
65 | coords(coords).scaleToA4().enableParallel(). |
---|
66 | parEdgeDist(20.0).edgeWidthScale(2.0).nodeScale(20.0). |
---|
67 | nodeColors(composeMap(colorSet, compMap)).run(); |
---|
68 | |
---|
69 | std::cout << "Result: connected_components.eps" << std::endl; |
---|
70 | } |
---|
71 | |
---|
72 | void drawStronglyConnectedComponents() { |
---|
73 | typedef ListGraph Graph; |
---|
74 | typedef Graph::Node Node; |
---|
75 | |
---|
76 | Graph graph; |
---|
77 | Graph::NodeMap<xy<double> > coords(graph); |
---|
78 | |
---|
79 | GraphReader<Graph>("dir_components.lgf", graph). |
---|
80 | readNodeMap("coordinates_x", xMap(coords)). |
---|
81 | readNodeMap("coordinates_y", yMap(coords)). |
---|
82 | run(); |
---|
83 | |
---|
84 | ColorSet colorSet; |
---|
85 | |
---|
86 | Graph::NodeMap<int> compMap(graph); |
---|
87 | Graph::EdgeMap<bool> cutMap(graph); |
---|
88 | stronglyConnectedComponents(graph, compMap); |
---|
89 | stronglyConnectedCutEdges(graph, cutMap); |
---|
90 | |
---|
91 | graphToEps(graph, "strongly_connected_components.eps"). |
---|
92 | coords(coords).scaleToA4().enableParallel(). |
---|
93 | drawArrows().arrowWidth(10.0).arrowLength(10.0). |
---|
94 | parEdgeDist(20.0).edgeWidthScale(2.0).nodeScale(20.0). |
---|
95 | nodeColors(composeMap(colorSet, compMap)). |
---|
96 | edgeColors(composeMap(functorMap(&color), cutMap)).run(); |
---|
97 | |
---|
98 | std::cout << "Result: strongly_connected_components.eps" << std::endl; |
---|
99 | } |
---|
100 | |
---|
101 | void drawNodeBiconnectedComponents() { |
---|
102 | typedef ListUGraph Graph; |
---|
103 | typedef Graph::Node Node; |
---|
104 | typedef Graph::UEdge UEdge; |
---|
105 | |
---|
106 | Graph graph; |
---|
107 | Graph::NodeMap<xy<double> > coords(graph); |
---|
108 | |
---|
109 | UGraphReader<Graph>("u_components.lgf", graph). |
---|
110 | readNodeMap("coordinates_x", xMap(coords)). |
---|
111 | readNodeMap("coordinates_y", yMap(coords)). |
---|
112 | run(); |
---|
113 | |
---|
114 | ColorSet colorSet; |
---|
115 | |
---|
116 | Graph::UEdgeMap<int> compMap(graph); |
---|
117 | Graph::NodeMap<bool> cutMap(graph); |
---|
118 | biNodeConnectedComponents(graph, compMap); |
---|
119 | biNodeConnectedCutNodes(graph, cutMap); |
---|
120 | |
---|
121 | graphToEps(graph, "bi_node_connected_components.eps").undirected(). |
---|
122 | coords(coords).scaleToA4().enableParallel(). |
---|
123 | parEdgeDist(20.0).edgeWidthScale(5.0).nodeScale(20.0). |
---|
124 | edgeColors(composeMap(colorSet, compMap)). |
---|
125 | nodeColors(composeMap(functorMap(&color), cutMap)). |
---|
126 | run(); |
---|
127 | |
---|
128 | std::cout << "Result: bi_node_connected_components.eps" << std::endl; |
---|
129 | } |
---|
130 | |
---|
131 | void drawEdgeBiconnectedComponents() { |
---|
132 | typedef ListUGraph Graph; |
---|
133 | typedef Graph::Node Node; |
---|
134 | typedef Graph::UEdge UEdge; |
---|
135 | |
---|
136 | Graph graph; |
---|
137 | Graph::NodeMap<xy<double> > coords(graph); |
---|
138 | |
---|
139 | UGraphReader<Graph>("u_components.lgf", graph). |
---|
140 | readNodeMap("coordinates_x", xMap(coords)). |
---|
141 | readNodeMap("coordinates_y", yMap(coords)). |
---|
142 | run(); |
---|
143 | |
---|
144 | ColorSet colorSet; |
---|
145 | |
---|
146 | Graph::NodeMap<int> compMap(graph); |
---|
147 | Graph::UEdgeMap<bool> cutMap(graph); |
---|
148 | biEdgeConnectedComponents(graph, compMap); |
---|
149 | biEdgeConnectedCutEdges(graph, cutMap); |
---|
150 | |
---|
151 | graphToEps(graph, "bi_edge_connected_components.eps").undirected(). |
---|
152 | coords(coords).scaleToA4().enableParallel(). |
---|
153 | parEdgeDist(20.0).edgeWidthScale(2.0).nodeScale(20.0). |
---|
154 | nodeColors(composeMap(colorSet, compMap)). |
---|
155 | edgeColors(composeMap(functorMap(&color), cutMap)).run(); |
---|
156 | |
---|
157 | std::cout << "Result: bi_edge_connected_components.eps" << std::endl; |
---|
158 | } |
---|
159 | |
---|
160 | void drawBipartitePartitions() { |
---|
161 | typedef ListUGraph Graph; |
---|
162 | typedef Graph::Node Node; |
---|
163 | typedef Graph::UEdge UEdge; |
---|
164 | |
---|
165 | Graph graph; |
---|
166 | Graph::NodeMap<xy<double> > coords(graph); |
---|
167 | |
---|
168 | UGraphReader<Graph>("partitions.lgf", graph). |
---|
169 | readNodeMap("coordinates_x", xMap(coords)). |
---|
170 | readNodeMap("coordinates_y", yMap(coords)). |
---|
171 | run(); |
---|
172 | |
---|
173 | ColorSet colorSet; |
---|
174 | |
---|
175 | Graph::NodeMap<bool> partMap(graph); |
---|
176 | bipartitePartitions(graph, partMap); |
---|
177 | |
---|
178 | graphToEps(graph, "bipartite_partitions.eps").undirected(). |
---|
179 | coords(coords).scaleToA4().enableParallel(). |
---|
180 | parEdgeDist(20.0).edgeWidthScale(2.0).nodeScale(20.0). |
---|
181 | nodeColors(composeMap(functorMap(&color), partMap)).run(); |
---|
182 | |
---|
183 | std::cout << "Result: bipartite_partitions.eps" << std::endl; |
---|
184 | } |
---|
185 | |
---|
186 | int main() { |
---|
187 | srand(time(0)); |
---|
188 | |
---|
189 | drawConnectedComponents(); |
---|
190 | drawStronglyConnectedComponents(); |
---|
191 | drawNodeBiconnectedComponents(); |
---|
192 | drawEdgeBiconnectedComponents(); |
---|
193 | drawBipartitePartitions(); |
---|
194 | return 0; |
---|
195 | } |
---|