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fix the edge - facet - vertex case

This commit is contained in:
Jane Tournois 2016-12-02 11:43:13 +01:00
parent f7e0c9121b
commit c7fcdc1d08
1 changed files with 23 additions and 1 deletions
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24
Triangulation_3/include/CGAL/Triangulation_segment_traverser_3.h
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@ -652,7 +652,12 @@ public:
else if (ltnext == Locate_type::FACET)
_curr_simplex = chnext->neighbor(linext);//chnext will be met after the facet
else if (ltnext == Locate_type::VERTEX)
_curr_simplex = shared_cell(get_edge(), chnext->vertex(linext));
{
if (edge_has_vertex(get_edge(), chnext->vertex(linext)))
_curr_simplex = chnext->vertex(linext);
else
_curr_simplex = shared_facet(get_edge(), chnext->vertex(linext));
}
else //CELL
CGAL_assertion(false);
break;
@ -916,6 +921,23 @@ private:
return Facet(Cell_handle(), 0);
}
Facet shared_facet(const Edge& e, const Vertex_handle v) const
{
typename Tr::Facet_circulator circ
= _cell_iterator.triangulation().incident_facets(e);
typename Tr::Facet_circulator end = circ;
do
{
Facet f = *circ;
if (facet_has_vertex(f, v))
return f;
} while (++circ != end);
std::cerr << "There is no facet shared by e and v" << std::endl;
CGAL_assertion(false);
return Facet(Cell_handle(), 0);
}
Cell_handle shared_cell(const Edge& e, const Vertex_handle v) const
{
typename Tr::Cell_circulator circ