| //======================================================================= |
| // 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 <vector> |
| #include <list> |
| #include <boost/graph/biconnected_components.hpp> |
| #include <boost/graph/adjacency_list.hpp> |
| #include <iterator> |
| #include <iostream> |
| |
| namespace boost |
| { |
| struct edge_component_t |
| { |
| enum |
| { num = 555 }; |
| typedef edge_property_tag kind; |
| } |
| edge_component; |
| } |
| |
| int |
| main() |
| { |
| using namespace boost; |
| typedef adjacency_list < vecS, vecS, undirectedS, |
| no_property, property < edge_component_t, std::size_t > >graph_t; |
| typedef graph_traits < graph_t >::vertex_descriptor vertex_t; |
| graph_t g(9); |
| add_edge(0, 5, g); |
| add_edge(0, 1, g); |
| add_edge(0, 6, g); |
| add_edge(1, 2, g); |
| add_edge(1, 3, g); |
| add_edge(1, 4, g); |
| add_edge(2, 3, g); |
| add_edge(4, 5, g); |
| add_edge(6, 8, g); |
| add_edge(6, 7, g); |
| add_edge(7, 8, g); |
| |
| property_map < graph_t, edge_component_t >::type |
| component = get(edge_component, g); |
| |
| std::size_t num_comps = biconnected_components(g, component); |
| std::cerr << "Found " << num_comps << " biconnected components.\n"; |
| |
| std::vector<vertex_t> art_points; |
| articulation_points(g, std::back_inserter(art_points)); |
| std::cerr << "Found " << art_points.size() << " articulation points.\n"; |
| |
| std::cout << "graph A {\n" << " node[shape=\"circle\"]\n"; |
| |
| for (std::size_t i = 0; i < art_points.size(); ++i) { |
| std::cout << (char)(art_points[i] + 'A') |
| << " [ style=\"filled\", fillcolor=\"red\" ];" |
| << std::endl; |
| } |
| |
| graph_traits < graph_t >::edge_iterator ei, ei_end; |
| for (boost::tie(ei, ei_end) = edges(g); ei != ei_end; ++ei) |
| std::cout << (char)(source(*ei, g) + 'A') << " -- " |
| << (char)(target(*ei, g) + 'A') |
| << "[label=\"" << component[*ei] << "\"]\n"; |
| std::cout << "}\n"; |
| |
| return 0; |
| } |