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//=======================================================================
// Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee,
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//=======================================================================
#include <boost/config.hpp>
#include <fstream>
#include <vector>
#include <string>
#include <boost/graph/connected_components.hpp>
#include <boost/graph/graphviz.hpp>
int
main()
{
using namespace boost;
GraphvizGraph g;
read_graphviz("figs/cc-internet.dot", g);
std::vector<int> component(num_vertices(g));
connected_components
(g, make_iterator_property_map(component.begin(),
get(vertex_index, g), component[0]));
property_map < GraphvizGraph, vertex_attribute_t >::type
vertex_attr_map = get(vertex_attribute, g);
std::string color[] = {
"white", "gray", "black", "lightgray"};
graph_traits < GraphvizGraph >::vertex_iterator vi, vi_end;
for (tie(vi, vi_end) = vertices(g); vi != vi_end; ++vi) {
vertex_attr_map[*vi]["color"] = color[component[*vi]];
vertex_attr_map[*vi]["style"] = "filled";
if (vertex_attr_map[*vi]["color"] == "black")
vertex_attr_map[*vi]["fontcolor"] = "white";
}
write_graphviz("figs/cc-internet-out.dot", g);
}
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