CGAL users discussion list

["Amir Vaxman" <>]

What will happen if I use the original un-updated surface? Is the refinement capable of handling the change without erasing? (suppose that the change is not very massive).

 

From: Mariette Yvinec [mailto:]
Sent: Monday, September 14, 2009 12:35 PM
To:
Subject: Re: [cgal-discuss] Online Mesh Generation

 

The following might work :

Delete from the C2T3::triangulation the vertices which are no longer
on the zero level set
Reinitialize a C2T3 with the updated triangulation
and call  again make_surface_mesh using :
- the C2T3
- the modified function
- an initial number of points equals to 0


Amir Vaxman wrote:

I am working with implicit functions to which I make a zero-level surface. I want  to make these functions updatable – that is, I create a surface, and then I change the function in some area of space, and I want to re-create the surface. The change is relatively local, so it should affect only a (known) part of the mesh. Is there a possibility to maybe “erase” part of the surface and update it with the new function, using CGAL’s mesh generation?

 

Amir.

-- 

Mariette Yvinec

Geometrica project team

INRIA  Sophia-Antipolis