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3rdparty/boost_1_81_0/libs/graph/example/cc-internet.cpp 1.58 KB
977ed18d   Hu Chunming   提交三方库
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  //=======================================================================
  // 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)
  //=======================================================================
  
  /*
     IMPORTANT!!!
     ~~~~~~~~~~~~
     This example uses interfaces that have been deprecated and removed from
     Boost.Grpah. Someone needs to update it, as it does NOT compile.
  */
  
  #include <boost/config.hpp>
  #include <fstream>
  #include <vector>
  #include <string>
  #include <boost/graph/connected_components.hpp>
  #include <boost/graph/graphviz.hpp>
  
  int main()
  {
      using namespace boost;
      GraphvizGraph g;
      read_graphviz("figs/cc-internet.dot", g);
  
      std::vector< int > component(num_vertices(g));
  
      connected_components(g,
          make_iterator_property_map(
              component.begin(), get(vertex_index, g), component[0]));
  
      property_map< GraphvizGraph, vertex_attribute_t >::type vertex_attr_map
          = get(vertex_attribute, g);
      std::string color[] = { "white", "gray", "black", "lightgray" };
      graph_traits< GraphvizGraph >::vertex_iterator vi, vi_end;
      for (boost::tie(vi, vi_end) = vertices(g); vi != vi_end; ++vi)
      {
          vertex_attr_map[*vi]["color"] = color[component[*vi]];
          vertex_attr_map[*vi]["style"] = "filled";
          if (vertex_attr_map[*vi]["color"] == "black")
              vertex_attr_map[*vi]["fontcolor"] = "white";
      }
      write_graphviz("figs/cc-internet-out.dot", g);
  }