CGAL users discussion list

[Mariette Yvinec <>]

The surface-mesher or Mesh_3 package of CGAL are able to mesh
domains and/or surfaces
provided some oracle on the boundary surfaces are given.
In your case, there is no such oracle.
You may build one from the sample points
but for this you should look into the
Surface reconstruction package.


Le 17/02/12 08:11, Sebastien Loriot (GeometryFactory) a écrit :

On 02/16/2012 11:24 PM, Zohar wrote:

 From what I understand the Surface_mesher is based on an implicit function.
I have a cloud of points, and I'd like to construct only the connectivity
for it. Meaning the new polyhedron will consist of only the cloud points. I
added that the points were sampled from another polyhedron, so I might use
this info to orient them. Would the surface_mesher will be able to handle
this?

What surface_mesher can do is take the existing polyhedron and given criteria functor, it will take points on that polyhedron to produce a mesh satisfying the criteria.
It cannot mesh the polyhedron with other points given as input.
Is it important that you select which are the final mesh points? can't
you do that directly by defining a mesh criteria and let the surface
mesher work?

I think that simplification won't do it either, since my estimation of
correspondence from the cloud of points to the original polyhedron vertices
might be ambiguous.



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Mariette Yvinec
Geometrica project team
INRIA  Sophia-Antipolis