typename property_traits<ComponentMap>::value_type
strong_components_impl
(const Graph& g, // Input
ComponentMap comp, // Output
// Internal record keeping
RootMap root,
DiscoverTime discover_time,
const bgl_named_params<P, T, R>& params)
{
typedef typename graph_traits<Graph>::vertex_descriptor Vertex;
BOOST_CONCEPT_ASSERT(( ReadWritePropertyMapConcept<ComponentMap, Vertex> ));
BOOST_CONCEPT_ASSERT(( ReadWritePropertyMapConcept<RootMap, Vertex> ));
typedef typename property_traits<RootMap>::value_type RootV;
BOOST_CONCEPT_ASSERT(( ConvertibleConcept<RootV, Vertex> ));
BOOST_CONCEPT_ASSERT(( ReadWritePropertyMapConcept<DiscoverTime, Vertex> ));
typename property_traits<ComponentMap>::value_type total = 0;
std::stack<Vertex> s;
detail::tarjan_scc_visitor<ComponentMap, RootMap, DiscoverTime,
std::stack<Vertex> >
vis(comp, root, discover_time, total, s);
depth_first_search(g, params.visitor(vis));
return total;
}
inline void prim_minimum_spanning_tree
(const VertexListGraph& g,
PredecessorMap p_map,
const bgl_named_params<P,T,R>& params)
{
detail::prim_mst_impl
(g,
choose_param(get_param(params, root_vertex_t()), *vertices(g).first),
params.predecessor_map(p_map),
choose_const_pmap(get_param(params, edge_weight), g, edge_weight));
}
void maximum_flow_path(Graph& g,
typename graph_traits<Graph>::vertex_descriptor s,
const bgl_named_params<P, T, R>& params) {
typedef typename property_traits<typename property_map<Graph, edge_weight_t>::type>::value_type WeightDataType;
dijkstra_shortest_paths(g,
s,
params.distance_compare(std::greater<WeightDataType>()).
distance_combine([](WeightDataType a, WeightDataType b) { return std::min(a, b); }).
distance_inf(WeightDataType()).
distance_zero(std::numeric_limits<WeightDataType>::max())
);
}
inline void
prim_mst_impl(const Graph& G,
typename graph_traits<Graph>::vertex_descriptor s,
const bgl_named_params<P,T,R>& params,
Weight)
{
typedef typename property_traits<Weight>::value_type W;
std::less<W> compare;
detail::_project2nd<W,W> combine;
dijkstra_shortest_paths(G, s, params.distance_compare(compare).
distance_combine(combine));
}
void maximum_flow_algorithm(Graph& g,
typename graph_traits<Graph>::vertex_descriptor s,
const bgl_named_params<P, T, R>& params) {
typedef typename property_traits<typename property_map<Graph, edge_weight_t>::type>::value_type WT;
// dummy_property_map p_map;
// typedef decltype(choose_param(get_param(params, vertex_distance), p_map)) DistanceMap;
// std::cout<< typeid(property_map<Graph, edge_weight_t>).name() << std::endl;
// typedef typename property_traits<DistanceMap>::value_type DT;
dijkstra_shortest_paths(g, s, params.distance_compare(std::greater<WT>()).
distance_combine([](WT a, WT b) { return std::min(a, b); }).
distance_inf(WT()).
distance_zero(std::numeric_limits<WT>::max()));
}
void topological_sort(VertexListGraph& g, OutputIterator result,
const bgl_named_params<P, T, R>& params)
{
typedef topo_sort_visitor<OutputIterator> TopoVisitor;
depth_first_search(g, params.visitor(TopoVisitor(result)));
}