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- // (C) Copyright 2007-2009 Andrew Sutton
- //
- // Use, modification and distribution are subject to the
- // Boost Software License, Version 1.0 (See accompanying file
- // LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
- #include <iostream>
- #include <boost/graph/undirected_graph.hpp>
- #include <boost/graph/directed_graph.hpp>
- #include <boost/graph/floyd_warshall_shortest.hpp>
- #include <boost/graph/eccentricity.hpp>
- #include <boost/graph/exterior_property.hpp>
- #include <boost/graph/property_maps/constant_property_map.hpp>
- using namespace std;
- using namespace boost;
- // number of vertices in the graph
- static const unsigned N = 5;
- template <typename Graph>
- struct vertex_vector
- {
- typedef graph_traits<Graph> traits;
- typedef vector<typename traits::vertex_descriptor> type;
- };
- template <typename Graph>
- void build_graph(Graph& g,
- typename vertex_vector<Graph>::type& v)
- {
- // add vertices
- for(size_t i = 0; i < N; ++i) {
- v[i] = add_vertex(g);
- }
- // add edges
- add_edge(v[0], v[1], g);
- add_edge(v[1], v[2], g);
- add_edge(v[2], v[0], g);
- add_edge(v[3], v[4], g);
- add_edge(v[4], v[0], g);
- }
- template <typename Graph>
- void test_undirected()
- {
- typedef typename graph_traits<Graph>::vertex_descriptor Vertex;
- typedef typename graph_traits<Graph>::edge_descriptor Edge;
- typedef exterior_vertex_property<Graph, int> EccentricityProperty;
- typedef typename EccentricityProperty::container_type EccentricityContainer;
- typedef typename EccentricityProperty::map_type EccentricityMap;
- typedef exterior_vertex_property<Graph, int> DistanceProperty;
- typedef typename DistanceProperty::matrix_type DistanceMatrix;
- typedef typename DistanceProperty::matrix_map_type DistanceMatrixMap;
- typedef constant_property_map<Edge, int> WeightMap;
- Graph g;
- vector<Vertex> v(N);
- build_graph(g, v);
- EccentricityContainer eccs(num_vertices(g));
- DistanceMatrix distances(num_vertices(g));
- EccentricityMap em(eccs, g);
- DistanceMatrixMap dm(distances, g);
- WeightMap wm(1);
- floyd_warshall_all_pairs_shortest_paths(g, dm, weight_map(wm));
- all_eccentricities(g, dm, em);
- int rad = radius(g, em);
- int dia = diameter(g, em);
- BOOST_ASSERT(em[v[0]] == 2);
- BOOST_ASSERT(em[v[1]] == 3);
- BOOST_ASSERT(em[v[2]] == 3);
- BOOST_ASSERT(em[v[3]] == 3);
- BOOST_ASSERT(em[v[4]] == 2);
- BOOST_ASSERT(rad == 2);
- BOOST_ASSERT(dia == 3);
- }
- template <typename Graph>
- void test_directed()
- {
- typedef typename graph_traits<Graph>::vertex_descriptor Vertex;
- typedef typename graph_traits<Graph>::edge_descriptor Edge;
- typedef exterior_vertex_property<Graph, int> EccentricityProperty;
- typedef typename EccentricityProperty::container_type EccentricityContainer;
- typedef typename EccentricityProperty::map_type EccentricityMap;
- typedef exterior_vertex_property<Graph, int> DistanceProperty;
- typedef typename DistanceProperty::matrix_type DistanceMatrix;
- typedef typename DistanceProperty::matrix_map_type DistanceMatrixMap;
- typedef constant_property_map<Edge, int> WeightMap;
- Graph g;
- vector<Vertex> v(N);
- build_graph(g, v);
- EccentricityContainer eccs(num_vertices(g));
- DistanceMatrix distances(num_vertices(g));
- EccentricityMap em(eccs, g);
- DistanceMatrixMap dm(distances, g);
- WeightMap wm(1);
- floyd_warshall_all_pairs_shortest_paths(g, dm, weight_map(wm));
- all_eccentricities(g, dm, em);
- int rad = radius(g, em);
- int dia = diameter(g, em);
- int inf = numeric_values<int>::infinity();
- BOOST_ASSERT(em[v[0]] == inf);
- BOOST_ASSERT(em[v[1]] == inf);
- BOOST_ASSERT(em[v[2]] == inf);
- BOOST_ASSERT(em[v[3]] == 4);
- BOOST_ASSERT(em[v[4]] == inf);
- BOOST_ASSERT(rad == 4);
- BOOST_ASSERT(dia == inf);
- }
- int
- main(int, char *[])
- {
- typedef undirected_graph<> Graph;
- typedef directed_graph<> Digraph;
- test_undirected<Graph>();
- test_directed<Digraph>();
- }
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