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add a comment to avoid a possible bug 

when using _find_leftmost_vertex_on_open_loop in another
function that _is_inside_new_face.
This commit is contained in:
Sébastien Loriot 2011-01-25 09:02:35 +00:00
parent 14d77ae2ea
commit e9c19883e2
1 changed files with 6 additions and 0 deletions
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6
Arrangement_on_surface_2/include/CGAL/Arrangement_2/Arrangement_on_surface_2_impl.h
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@ -3451,6 +3451,12 @@ _compare_vertices_xy_impl (const DVertex * v1, const DVertex * v2,
// the source vertex of the second halfedge, such that the new curve will
// connect these two vertices.
//
//Note that the lowest halfedge incident to the leftmost vertex (he_left_low)
//is the lowest in the open loop. In the case one needs to have the lowest incident
//halfedge in the interior of the closed loop, the first curve in compare_y_at_x_right_2
//he_left_low->curve() must be replaced by (he_left_low!=he_before?he_left_low->curve():cv).
//Note that in both cases, the result of the (only) calling function _is_inside_new_face will be
//the same (the turn is the same).
template<class GeomTraits, class TopTraits>
std::pair<const typename Arrangement_on_surface_2<GeomTraits,
TopTraits>::DVertex*,