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136 lines
4.0 KiB
C++
136 lines
4.0 KiB
C++
//=======================================================================
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// Copyright 1997, 1998, 1999, 2000 University of Notre Dame.
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// Authors: Andrew Lumsdaine, Lie-Quan Lee, Jeremy G. Siek
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//
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// This file is part of the Boost Graph Library
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//
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// You should have received a copy of the License Agreement for the
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// Boost Graph Library along with the software; see the file LICENSE.
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// If not, contact Office of Research, University of Notre Dame, Notre
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// Dame, IN 46556.
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//
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// Permission to modify the code and to distribute modified code is
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// granted, provided the text of this NOTICE is retained, a notice that
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// the code was modified is included with the above COPYRIGHT NOTICE and
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// with the COPYRIGHT NOTICE in the LICENSE file, and that the LICENSE
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// file is distributed with the modified code.
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//
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// LICENSOR MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED.
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// By way of example, but not limitation, Licensor MAKES NO
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// REPRESENTATIONS OR WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY
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// PARTICULAR PURPOSE OR THAT THE USE OF THE LICENSED SOFTWARE COMPONENTS
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// OR DOCUMENTATION WILL NOT INFRINGE ANY PATENTS, COPYRIGHTS, TRADEMARKS
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// OR OTHER RIGHTS.
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//=======================================================================
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//
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// Sample output:
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//
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#include <iostream>
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#include <boost/utility.hpp>
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#include <boost/property_accessor.hpp>
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#include <boost/graph/adjacency_list.hpp>
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using boost::tie;
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using boost::graph_traits;
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struct flow_tag { enum { num = 200 }; };
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struct capacity_tag { enum { num = 201 }; };
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using namespace boost;
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using namespace std;
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template <class Graph, class Capacity, class Flow>
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void print_network(Graph& G, Capacity capacity, Flow flow)
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{
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typedef typename boost::graph_traits<Graph>::vertex_iterator Viter;
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typedef typename boost::graph_traits<Graph>::out_edge_iterator OutEdgeIter;
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typedef typename boost::graph_traits<Graph>::in_edge_iterator InEdgeIter;
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Viter ui, uiend;
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boost::tie(ui, uiend) = vertices(G);
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for (; ui != uiend; ++ui) {
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OutEdgeIter out, out_end;
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cout << *ui << "\t";
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boost::tie(out, out_end) = out_edges(*ui, G);
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for(; out != out_end; ++out)
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cout << "--(" << capacity[*out] << ", " << flow[*out] << ")--> "
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<< target(*out,G) << "\t";
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InEdgeIter in, in_end;
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cout << endl << "\t";
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boost::tie(in, in_end) = in_edges(*ui, G);
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for(; in != in_end; ++in)
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cout << "<--(" << capacity[*in] << "," << flow[*in] << ")-- "
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<< source(*in,G) << "\t";
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cout << endl;
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}
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}
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int main(int argc, char* argv[])
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{
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typedef plugin<capacity_tag, int> Cap;
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typedef plugin<flow_tag, int, Cap> Flow;
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typedef adjacency_list<vecS,vecS,bidirectionalS, no_plugin, Flow> Graph;
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const int num_vertices = 9;
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Graph G(num_vertices);
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/* 2<----5
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/ ^
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/ \
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V \
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0 ---->1---->3----->6--->8
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\ ^
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\ /
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V /
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4----->7
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*/
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add_edge(G, 0, 1, Flow(10, Cap(8)));
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add_edge(G, 1, 4, Flow(20, Cap(12)));
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add_edge(G, 4, 7, Flow(20, Cap(12)));
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add_edge(G, 7, 6, Flow(20, Cap(12)));
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add_edge(G, 1, 3, Flow(40, Cap(12)));
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add_edge(G, 3, 6, Flow(40, Cap(12)));
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add_edge(G, 6, 5, Flow(20, Cap(16)));
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add_edge(G, 5, 2, Flow(20, Cap(16)));
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add_edge(G, 2, 1, Flow(20, Cap(16)));
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add_edge(G, 6, 8, Flow(10, Cap(8)));
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typedef boost::graph_traits<Graph>::edge_descriptor Edge;
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edge_property_accessor<Graph,capacity_tag>::type capacity
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= get_edge_property_accessor(G, capacity_tag());
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edge_property_accessor<Graph,flow_tag>::type flow
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= get_edge_property_accessor(G,flow_tag());
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print_network(G, capacity, flow);
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boost::graph_traits<Graph>::vertex_iterator v, v_end;
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boost::graph_traits<Graph>::out_edge_iterator e, e_end;
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int f = 0;
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for (tie(v,v_end) = vertices(G); v != v_end; ++v)
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for (tie(e,e_end) = out_edges(*v,G); e != e_end; ++e)
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flow[*e] = ++f;
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cout << endl << endl;
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remove_edge(G, 6, 8);
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print_network(G, capacity, flow);
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return 0;
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}
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