CGAL users discussion list

[freckles <>]

I'm doing lots of join vertex operations, basically to perform halfedge
collapses, and I ran into a problem while I was traversing the star of a
vertex "u". When I try to access the ID [vertex_handle->id()] or point
[vertex_handle->point()], of one of the vertices which the vertex "u" points
to, my program dies. I'm actually thinking that this is because the topology
becomes invalid or non-2 manifold after a certain collapse.

Is there a way to check if a vertex in a polyhedron is valid, given that I
have the halfedge pointing to it, and the halfedge is valid? 

Actually, is it possible for a valid halfedge to point to an invalid
halfedge? 

Thanks a lot. 

--
View this message in context: 
http://cgal-discuss.949826.n4.nabble.com/Polyhedron-vertex-validity-tp4459607p4459607.html
Sent from the cgal-discuss mailing list archive at Nabble.com.