CGAL users discussion list

["Laurent Rineau (GeometryFactory)" <>]

On Saturday 16 May 2009 04:19:00 weihy1984 wrote:
> Hello, everyone,
>    I have a problem with the output of the implicit surface mesh data to a
> txt file. And my CGAL version is 3.3.1 of windows XP. At first, I want to
> get the number and coordinates of the vertices. Furthermore, I want to know
> the number of the triangles on the implicit surface and the indexes of
> three vertices of these triangles. So I add some output codes to 3d
> implicit surface mesh generation example in 
> examples/Surface_mesher/mesh_an_implicit_function.cpp. But the result is
> not what I want. Many triangles I got were not on the surface. And I have
> spent four days to solve it, but there is no result. And I still don't know
> the reason why . I just be a cgal novice  and I need your help very much,
> and I will appreciate it for your help very much. The following is my code,
> you can check the output part.

Your code seems correct. How many facets have you on that surface (a sphere), 
with the criteria you have chosen?

-- 
Laurent Rineau, PhD
Engineer at GeometryFactory
http://www.geometryfactory.com/