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//=======================================================================
// Copyright 1997, 1998, 1999, 2000 University of Notre Dame.
// Authors: Andrew Lumsdaine, Lie-Quan Lee, Jeremy G. Siek
//
// 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 <iostream>
#include <boost/graph/adjacency_list.hpp>
#include <boost/graph/graph_utility.hpp>
/*
Sample output:
original graph:
0 --> 3 2 3
1 --> 3
2 --> 0
3 --> 2
1(0,3) 2(0,2) 3(0,3) 4(1,3) 5(2,0) 6(3,2)
removing edges connecting 0 to 3
0 --> 2
1 --> 3
2 --> 0
3 --> 2
2(0,2) 4(1,3) 5(2,0) 6(3,2)
removing edges with weight greater than 3
0 --> 2
1 -->
2 -->
3 -->
2(0,2)
*/
using namespace boost;
typedef adjacency_list< vecS, vecS, bidirectionalS, no_property,
property< edge_weight_t, int > >
Graph;
struct has_weight_greater_than
{
has_weight_greater_than(int w_, Graph& g_) : w(w_), g(g_) {}
bool operator()(graph_traits< Graph >::edge_descriptor e)
{
#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300
property_map< Graph, edge_weight_t >::type weight = get(edge_weight, g);
return get(weight, e) > w;
#else
// This version of get() breaks VC++
return get(edge_weight, g, e) > w;
#endif
}
int w;
Graph& g;
};
int main()
{
typedef std::pair< std::size_t, std::size_t > Edge;
Edge edge_array[6] = { Edge(0, 3), Edge(0, 2), Edge(0, 3), Edge(1, 3),
Edge(2, 0), Edge(3, 2) };
#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300
Graph g(4);
for (std::size_t j = 0; j < 6; ++j)
add_edge(edge_array[j].first, edge_array[j].second, g);
#else
Graph g(edge_array, edge_array + 6, 4);
#endif
property_map< Graph, edge_weight_t >::type weight = get(edge_weight, g);
int w = 0;
graph_traits< Graph >::edge_iterator ei, ei_end;
for (boost::tie(ei, ei_end) = edges(g); ei != ei_end; ++ei)
weight[*ei] = ++w;
property_map< Graph, vertex_index_t >::type indexmap = get(vertex_index, g);
std::cout << "original graph:" << std::endl;
print_graph(g, indexmap);
print_edges2(g, indexmap, weight);
std::cout << std::endl;
std::cout << "removing edges connecting 0 to 3" << std::endl;
remove_out_edge_if(vertex(0, g), incident_to(vertex(3, g), g), g);
print_graph(g, indexmap);
print_edges2(g, indexmap, weight);
std::cout << "removing edges with weight greater than 3" << std::endl;
remove_edge_if(has_weight_greater_than(3, g), g);
print_graph(g, indexmap);
print_edges2(g, indexmap, weight);
return 0;
}
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