#include <boost/graph/adjacency_list.hpp>
#include <boost/graph/depth_first_search.hpp>


using namespace boost;

class OpenGLVisitor :
    public boost::default_dfs_visitor
    {
    public:
        OpenGLVisitor(void);
	    virtual ~OpenGLVisitor(void);
	    };


int main()
{	    
     typedef adjacency_list < vecS, listS, directedS,
        property< vertex_index_t, int> > graph_t;

     graph_t g;
     OpenGLVisitor OGLVisitor;
     graph_t::vertex_iterator i, e;
     int id(0);
     for(tie(i, e) = vertices(g); i != e; ++i, ++id)
        put(vertex_index, g, *i, id);
     depth_first_search(g, visitor(OGLVisitor));	    
    return 0;        
}