CGAL users discussion list

[omar rodriguez <>]

Hello, sorry if this topic has been covered already, I tried searching
the archives but they seem to be down at the moment.


I am using alpha shapes to get a shape from a set of points, and then
I convert it to a polyhedron using
CGAL::Polyhedron_incremental_builder_3 to get the boundary facets to
perform further operations.

This works most of the time, but every so often I get the following error :

---
CGAL::Polyhedron_incremental_builder_3<HDS>::
add_vertex_to_facet(): input error: disconnected facet complexes at vertex
636:
          involved facets are: 472 470 471 (closed cycle) and.

terminate called after throwing an instance of 'CGAL::Assertion_exception'
 what():  CGAL ERROR: assertion violation!
Expr: check_protocoll == 1
File: ../../CGAL-3.4/include/CGAL/Polyhedron_incremental_builder_3.h
Line: 224
---

I have tried using different kernels but the error keeps popping up on
the polyhedron builder.

Any help would be greatly appreciated.

Omar

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