CGAL users discussion list

[Jatin Relan <>]

Thanks for your reply.

> Jatin Relan wrote:
> > Hi all,
> >
> > I have a question about interpolation on a mesh.
> Is your mesh a surface or volume mesh? Interpolation method in CGAL
> are
> only available in 2D and for 2D surfaces.
> (see
> http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Interpolation/Chapter_main.html)

I have a triangulated 3D surface with few vertices having data on, and I want 
to interpolate them on other vertices.


> 
> >
> > Q.1 Say, I have a mesh with an attribute values for some of the
> > vertices (a subset), is there any interpolation method in CGAL to
> > interpolate the attribute values for all the remaining vertices
> > (where I didn't had data)?
> >
> > Q.2 Which interpolation method it would use?
> >
> > Q.3 Say I have a mesh with given set of vertices, I choose a subset
> > of vertices. Now I want to remesh (or decimate) the surface such
> > that the new surface would have total number of vertices as only
> > those vertices which I chose. Is there any method to do that in
> > CGAL?
> >
> Have a look at the surface mesh simplification package here:
> http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Interpolation/Chapter_main.html
> 
> Look at "Example with edges marked as non-removable". Marking all
> edges
> incident to your marked vertices as non-removable should do what you
> want.
> 


The link is not correct, can you point me to such example.


> 
> >
> > Q.4 Is it possible to smooth a tetrahedral mesh in CGAL?
> Do you mean smoothing the surface and maintain the tetrahedral mesh?


Yes, I just want to smooth the surface, but keep the tetrahedral mesh. 
I know that I can try to extract and smooth the surface first and then create 
another tetrahedral mesh. 
But my problem is that I have some zone definitions in the input tetrahedral 
mesh (having rough surface), which I can't reproduce if I create another 
tetrahedral mesh.

Also I would be glad if you have some solution to create a multi-domain 
tetrahedral mesh, from multiple polyhedral surfaces, instead of an multiple 
intensity image.

Thanks very much.


Jatin


> >
> > Thanks very much in advance.
> >
> > Cheers,
> > Jatin
> >
> >
> 
> 
> --
> You are currently subscribed to cgal-discuss.
> To unsubscribe or access the archives, go to
> https://lists-sop.inria.fr/wws/info/cgal-discuss