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52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
// Copyright 2005 The Trustees of Indiana University.
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// Use, modification and distribution is subject to the Boost Software
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// Authors: Douglas Gregor
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// Andrew Lumsdaine
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#include <boost/graph/connected_components.hpp>
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#include "graph.hpp"
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#include "digraph.hpp"
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#include <boost/python.hpp>
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namespace boost { namespace graph { namespace python {
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template<typename Graph>
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int
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connected_components
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(Graph& g,
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const vector_property_map<int, typename Graph::VertexIndexMap>* in_component,
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const vector_property_map<default_color_type,
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typename Graph::VertexIndexMap>* in_color)
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{
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typedef vector_property_map<int, typename Graph::VertexIndexMap> ComponentMap;
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typedef vector_property_map<default_color_type,
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typename Graph::VertexIndexMap> ColorMap;
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ComponentMap component =
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in_component? *in_component : g.template get_vertex_map<int>("component");
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ColorMap color =
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in_color? *in_color : ColorMap(g.num_vertices(), g.get_vertex_index_map());
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return boost::connected_components(g, component, color_map(color));
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}
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void export_connected_components()
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{
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using boost::python::arg;
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using boost::python::def;
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def("connected_components", &connected_components<Graph>,
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(arg("graph"),
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arg("component_map") =
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(vector_property_map<int, Graph::VertexIndexMap>*)0,
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arg("color_map") =
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(vector_property_map<default_color_type, Graph::VertexIndexMap>*)0));
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}
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} } } // end namespace boost::graph::python
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