void make_biconnected_planar(Graph& g,
PlanarEmbedding embedding,
EdgeIndexMap em,
AddEdgeVisitor& vis
)
{
typedef typename graph_traits<Graph>::vertex_descriptor vertex_t;
typedef typename graph_traits<Graph>::edge_descriptor edge_t;
typedef typename graph_traits<Graph>::edges_size_type edge_size_t;
typedef typename
property_traits<PlanarEmbedding>::value_type embedding_value_t;
typedef typename embedding_value_t::const_iterator embedding_iterator_t;
typedef iterator_property_map
<std::vector<std::size_t>::iterator, EdgeIndexMap> component_map_t;
edge_size_t n_edges(num_edges(g));
std::vector<vertex_t> articulation_points;
std::vector<edge_size_t> component_vector(n_edges);
component_map_t component_map(component_vector.begin(), em);
biconnected_components(g, component_map,
std::back_inserter(articulation_points));
typename std::vector<vertex_t>::iterator ap, ap_end;
ap_end = articulation_points.end();
for(ap = articulation_points.begin(); ap != ap_end; ++ap)
{
vertex_t v(*ap);
embedding_iterator_t pi = embedding[v].begin();
embedding_iterator_t pi_end = embedding[v].end();
edge_size_t previous_component(n_edges + 1);
vertex_t previous_vertex = graph_traits<Graph>::null_vertex();
for(; pi != pi_end; ++pi)
{
edge_t e(*pi);
vertex_t e_source(source(e,g));
vertex_t e_target(target(e,g));
//Skip self-loops and parallel edges
if (e_source == e_target || previous_vertex == e_target)
continue;
vertex_t current_vertex = e_source == v ? e_target : e_source;
edge_size_t current_component = component_map[e];
if (previous_vertex != graph_traits<Graph>::null_vertex() &&
current_component != previous_component)
{
vis.visit_vertex_pair(current_vertex, previous_vertex, g);
}
previous_vertex = current_vertex;
previous_component = current_component;
}
}
}
void make_connected(Graph& g, VertexIndexMap vm, AddEdgeVisitor& vis)
{
typedef typename graph_traits<Graph>::vertex_iterator vertex_iterator_t;
typedef typename graph_traits<Graph>::vertex_descriptor vertex_t;
typedef typename graph_traits<Graph>::vertices_size_type v_size_t;
typedef iterator_property_map< typename std::vector<v_size_t>::iterator,
VertexIndexMap
> vertex_to_v_size_map_t;
std::vector<v_size_t> component_vector(num_vertices(g));
vertex_to_v_size_map_t component(component_vector.begin(), vm);
std::vector<vertex_t> vertices_by_component(num_vertices(g));
v_size_t num_components = connected_components(g, component);
if (num_components < 2)
return;
vertex_iterator_t vi, vi_end;
tie(vi,vi_end) = vertices(g);
std::copy(vi, vi_end, vertices_by_component.begin());
bucket_sort(vertices_by_component.begin(),
vertices_by_component.end(),
component,
num_components
);
typedef typename std::vector<vertex_t>::iterator vec_of_vertices_itr_t;
vec_of_vertices_itr_t ci_end = vertices_by_component.end();
vec_of_vertices_itr_t ci_prev = vertices_by_component.begin();
if (ci_prev == ci_end)
return;
for(vec_of_vertices_itr_t ci = boost::next(ci_prev);
ci != ci_end; ci_prev = ci, ++ci
)
{
if (component[*ci_prev] != component[*ci])
vis.visit_vertex_pair(*ci_prev, *ci, g);
}
}
