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Re: [cgal-discuss] 3D cloud points triangulation


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  • From: tina rumi <>
  • To:
  • Subject: Re: [cgal-discuss] 3D cloud points triangulation
  • Date: Wed, 6 Jan 2010 20:22:03 -0500
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Hi Nader,

Thanks a lot for the tips. Actually I was using Manifold_with_boundary_tag, but I had that problem. I tried  Non_manifold_tag but it didn't work and when I used the  Manifold_tag, result was exactly like Manifold_with_boundary_tag.
I am saving data as polyhedron.
I would like to have the result like "nefertiti.off" in "CGAL-3.5\examples\Surface_mesh_parameterization\data", which the borders are free and not connected.

Thank you,
Tina


On Wed, Jan 6, 2010 at 4:04 AM, Nader SALMAN <> wrote:
Dear Tina,

if i understood well, you tried to use the CGAL surface mesher (e.g. CGAL::make_surface_mesh).
If you use the oracle that intersects a polyhedron, the surface can be "open".
You should use the Manifold_with_boundary_tag (or the Non_manifold_tag), rather than the Manifold_tag
that tends to close the surface quote: "but after triangulation I will get a close object which all of the borders are connected".

Here is a link to the documentation : http://www.cgal.org/Manual/last/doc_html/cgal_manual/Surface_mesher/Chapter_main.html

Yours,
Nad.

Nader SALMAN
Geometrica Lab, Byron Y308
INRIA Sophia Antipolis (FRANCE)

Tel: +33(0)4 9238 7161   Fax: +33(0)4 9715 5395  

http://www-sop.inria.fr/members/Nader.Salman



tina rumi a écrit :

Hi all,

I applied the cgal triangulation on the 3D cloud points that I have.  My data is like a surface which is like open object but after triangulation I will get a close object which all of the borders are connected. Do you have any suggestion to solve that.

Thank you,
Tina

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