CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

Can you give more information like the modifier you wrote for example?

A common mistake is not reusing the vertices. If you add two vertices
with the same coordinates, they will be consider as different.

Sebastien.

On 03/06/2013 05:51 AM, Evan Behar wrote:
> I have constructed a Polyhedron_3, /P/, using the
> Polyhedron_incremental_builder_3, and I am running into the problem that
> none of the halfedges in the structure are being associated with any
> opposite halfedges that have been previously constructed.
>
> After construction, retrieving a Halfedge_handle /h/ from /P /and
> calling /h->opposite()->facet()/ always results in an invalid Facet_handle.
>
> Is this expected behavior from Polyhedron_incremental_builder_3? Do I
> have to stitch the facets together manually?