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Re: [cgal-discuss] make_mesh_3 results in non-manifold edges in surface mesh


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  • From: "Laurent Rineau (CGAL/GeometryFactory)" <>
  • To:
  • Subject: Re: [cgal-discuss] make_mesh_3 results in non-manifold edges in surface mesh
  • Date: Mon, 21 Nov 2016 11:57:54 +0100
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  • Organization: GeometryFactory

Le Sunday, November 20, 2016 7:35:56 PM CET Patrick a écrit :

> Hi,

>

> I've been using CGAL to mesh (approximations to) fattened gyroid surfaces,

> confined to a box from an implicit function. Attached is a simple example

> code. Unfortunately, this results in a surface mesh containing a

> non-manifold edge (with 4 faces attached to it). this problem seems to

> persist in the tet mesh that was generated (I wrote a little program to

> recalculate its surface mesh). Am I making some silly mistake here? Is

> there any way to fix it?

 

There is an undocumented parameter that you may want to try... Add `facet_topology=CGAL::MANIFOLD,` in the parameters of `Mesh_criteria_3`, to enforce the manifoldness of the output. However, if mesh domain has not a manifold surface, the execution may loop and eventually crash. Use it carefully.

 

--

Laurent Rineau, PhD

R&D Engineer at GeometryFactory http://www.geometryfactory.com/

Release Manager of the CGAL Project http://www.cgal.org/

 


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