mirror of
https://github.com/boostorg/graph.git
synced 2025-05-09 23:14:00 +00:00
58 lines
2.2 KiB
C++
58 lines
2.2 KiB
C++
//=======================================================================
|
|
// Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee,
|
|
//
|
|
// This file is part of the Boost Graph Library
|
|
//
|
|
// You should have received a copy of the License Agreement for the
|
|
// Boost Graph Library along with the software; see the file LICENSE.
|
|
// If not, contact Office of Research, Indiana University,
|
|
// Bloomington, IN 47405.
|
|
//
|
|
// Permission to modify the code and to distribute the code is
|
|
// granted, provided the text of this NOTICE is retained, a notice if
|
|
// the code was modified is included with the above COPYRIGHT NOTICE
|
|
// and with the COPYRIGHT NOTICE in the LICENSE file, and that the
|
|
// LICENSE file is distributed with the modified code.
|
|
//
|
|
// LICENSOR MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED.
|
|
// By way of example, but not limitation, Licensor MAKES NO
|
|
// REPRESENTATIONS OR WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY
|
|
// PARTICULAR PURPOSE OR THAT THE USE OF THE LICENSED SOFTWARE COMPONENTS
|
|
// OR DOCUMENTATION WILL NOT INFRINGE ANY PATENTS, COPYRIGHTS, TRADEMARKS
|
|
// OR OTHER RIGHTS.
|
|
//=======================================================================
|
|
#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));
|
|
|
|
int num_comp = 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);
|
|
|
|
}
|