CGAL users discussion list

[Costas Tsirogiannis <>]

Greetings,

I have a problem with run-time errors coming from an unorthodox use of handles:

  I make use of a triangulation and of an augmented polyhedron_3 object. This augmented polyhedron
is a refinement of the surface represented by the triangulation : as some algorithm goes on, new edges
are added on what used to be the triangular faces. It is important that the halfedges,faces and vertices 
on the polyhedron that originate from features of the triangulation should point to the corresponding triangulation
features.  Thus each feature stores a handle of the original triangulation object: a polyhedron vertex stores a handle
to the original triangulation vertex of the same coordinates, a halfedge stores a handle to the triangulation edge or 
face on which it lies etc. 
 When a feature is refined eg a halfedge is split, these stored handles of triangulation features are copied to
the newly created features. And then segmentation faults appear. Specifically, things go wrong when there is an attempt 
to access the handle member object of the new feature outside of the function that created the feature (and copied the
 handle object to it).  Any ideas for what could fix this?

thanks

Constantinos