void
random_graph_layout
(const Graph& g, PositionMap position_map,
typename property_traits<PositionMap>::value_type const& origin,
typename property_traits<PositionMap>::value_type const& extent,
RandomNumberGenerator& gen)
{
typedef typename property_traits<PositionMap>::value_type Point;
typedef typename graph::point_traits<Point>::component_type Dimension;
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(origin[0], origin[0] + extent[0]);
distrib_t y(origin[1], origin[1] + extent[1]);
typename graph_traits<Graph>::vertex_iterator vi, vi_end;
for(tie(vi, vi_end) = vertices(g); vi != vi_end; ++vi) {
position_map[*vi][0] = x(my_gen);
position_map[*vi][1] = y(my_gen);
}
}
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);
}
}
