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[cgal-discuss] Bug in Polyhedron_incremental_builder_3::test_facet


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  • From: Jean-Philippe Pons <>
  • To:
  • Subject: [cgal-discuss] Bug in Polyhedron_incremental_builder_3::test_facet
  • Date: Wed, 23 Jun 2010 01:45:07 -0700 (PDT)


Dear CGAL developers,

test_facet may return 'true' when testing a facet which creates a
non-manifold vertex. So that a subsequent call to add_facet will
unexpectedly fail.

This is because test_facet only checks if one of the vertices of the novel
facet already has a full cycle of facets, which is not sufficient. It does
not check if the novel facet closes a cycle, while there is another
component of facets.

I have checked that the problem still exists in the latest version.

Cheers,

Jean-Philippe

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