CGAL users discussion list

[Mariette Yvinec <>]

remeshing with the polyline as sharp feature will preserve the polyline
as it is, with no smoothing...

One solution might be to apply a smoothing process, Laplacian
or other convolution base process on the polyline,
and remesh
using the new smoother polyline as sharp features.
Remeshing volumes and surfaces with sharp features
 tolerate the fact that the sharp feature
might not be exactly on the surfaces.


Le 26/04/12 16:38, Sebastien Loriot (GeometryFactory) a écrit :

I read your question too fast, I thought you simply wanted to close the
surface.
There is a huge literature on mesh smoothing, but out-of-the box
solution is available in CGAL.

One thing you can try is remeshing without marking the polyline as
sharp feature.

Sebastien.


On 04/26/2012 03:26 PM, Oleg wrote:

Hello Sebastien! Could you specify a little bit more, what you meant? It
sounds interesting, but I'm not sure how the part of the other surface can
help. I've tried mesh_polyhedral_domain_with_features.cpp example with the
sphere and crater, but it doesn't make the edge smoother...


Sebastien Loriot (GeometryFactory) wrote

You can use the part of the other surface bounded by the curve.
For example, if you have two spheres intersecting along a circle, you'll
have a sphere with a crater.

Sebastien.

On 04/23/2012 01:40 PM, Oleg wrote:

Hello everyone! I have a set of points in 3D as the result of calculating
intersection of two triangulated 3D figures. Since they are calculated as
intersection of individual triangles of the two meshes, they form a
rather
rough polyline. Are there any means in CGAL to smooth it over? The goal
is
to obtain a smooth sharp curve of intersection of two 3D figures.

Oleg

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Mariette Yvinec
Geometrica project team
INRIA  Sophia-Antipolis