50 lines
1.7 KiB
C++
Executable File
50 lines
1.7 KiB
C++
Executable File
// Copyright 2004 The Trustees of Indiana University.
|
|
|
|
// 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)
|
|
|
|
// Authors: Douglas Gregor
|
|
// Andrew Lumsdaine
|
|
#ifndef BOOST_GRAPH_RANDOM_LAYOUT_HPP
|
|
#define BOOST_GRAPH_RANDOM_LAYOUT_HPP
|
|
|
|
#include <boost/graph/graph_traits.hpp>
|
|
#include <boost/random/uniform_int.hpp>
|
|
#include <boost/random/uniform_01.hpp>
|
|
#include <boost/random/uniform_real.hpp>
|
|
#include <boost/type_traits/is_integral.hpp>
|
|
#include <boost/mpl/if.hpp>
|
|
|
|
namespace boost {
|
|
|
|
template<typename Graph, typename PositionMap, typename Dimension,
|
|
typename RandomNumberGenerator>
|
|
void
|
|
random_graph_layout(const Graph& g, PositionMap position_map,
|
|
Dimension minX, Dimension maxX,
|
|
Dimension minY, Dimension maxY,
|
|
RandomNumberGenerator& gen)
|
|
{
|
|
typedef typename mpl::if_<is_integral<Dimension>,
|
|
uniform_int<Dimension>,
|
|
uniform_real<Dimension> >::type distrib_t;
|
|
typedef typename mpl::if_<is_integral<Dimension>,
|
|
RandomNumberGenerator&,
|
|
uniform_01<RandomNumberGenerator, Dimension> >
|
|
::type gen_t;
|
|
|
|
gen_t my_gen(gen);
|
|
distrib_t x(minX, maxX);
|
|
distrib_t y(minY, maxY);
|
|
typename graph_traits<Graph>::vertex_iterator vi, vi_end;
|
|
for(tie(vi, vi_end) = vertices(g); vi != vi_end; ++vi) {
|
|
position_map[*vi].x = x(my_gen);
|
|
position_map[*vi].y = y(my_gen);
|
|
}
|
|
}
|
|
|
|
} // end namespace boost
|
|
|
|
#endif // BOOST_GRAPH_RANDOM_LAYOUT_HPP
|