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67 lines
2.3 KiB
C++
67 lines
2.3 KiB
C++
//=======================================================================
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// Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee,
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//=======================================================================
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/*
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IMPORTANT!!!
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~~~~~~~~~~~~
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This example uses interfaces that have been deprecated and removed from
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Boost.Grpah. Someone needs to update it, as it does NOT compile.
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*/
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#include <boost/config.hpp>
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#include <iostream>
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#include <fstream>
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#include <boost/lexical_cast.hpp>
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#include <boost/graph/graphviz.hpp>
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#include <boost/graph/kruskal_min_spanning_tree.hpp>
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int main()
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{
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using namespace boost;
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GraphvizGraph g_dot;
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read_graphviz("figs/telephone-network.dot", g_dot);
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typedef adjacency_list< vecS, vecS, undirectedS, no_property,
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property< edge_weight_t, int > >
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Graph;
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Graph g(num_vertices(g_dot));
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auto edge_attr_map = get(edge_attribute, g_dot);
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graph_traits< GraphvizGraph >::edge_iterator ei, ei_end;
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for (boost::tie(ei, ei_end) = edges(g_dot); ei != ei_end; ++ei)
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{
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int weight = lexical_cast< int >(edge_attr_map[*ei]["label"]);
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property< edge_weight_t, int > edge_property(weight);
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add_edge(source(*ei, g_dot), target(*ei, g_dot), edge_property, g);
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}
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std::vector< graph_traits< Graph >::edge_descriptor > mst;
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typedef std::vector< graph_traits< Graph >::edge_descriptor >::size_type
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size_type;
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kruskal_minimum_spanning_tree(g, std::back_inserter(mst));
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auto weight = get(edge_weight, g);
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int total_weight = 0;
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for (auto const& edge : mst)
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total_weight += get(weight, edge);
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std::cout << "total weight: " << total_weight << std::endl;
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typedef graph_traits< Graph >::vertex_descriptor Vertex;
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for (auto const& edge : mst)
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{
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auto u = source(edge, g), v = target(edge, g);
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edge_attr_map[edge(u, v, g_dot).first]["color"] = "black";
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}
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std::ofstream out("figs/telephone-mst-kruskal.dot");
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auto graph_edge_attr_map = get_property(g_dot, graph_edge_attribute);
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graph_edge_attr_map["color"] = "gray";
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graph_edge_attr_map["style"] = "bold";
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write_graphviz(out, g_dot);
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return EXIT_SUCCESS;
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}
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