[Gmsh] tetrahedralization

[=?windows-1252?Q?Jean-Fran=8D=E7ois_Remacle?=]

Ares Lagae a écrit :
> I am looking to generate a tetrahedralization of a model.
> The model is given as a set of triangles, and many of these triangles 
> intersect.
>
>   
Could you simply tetarhedrize the set of points and then recover some 
triangles ?

Could you repair the triangulation ?

If the model comes from a real cad model (with nurbs & co), then gmsh 
can mesh
the model in a conforming way (without intersections) and therefore 
generate a tet
mesh.

> Can gmsh generate a volume tetrahedralization of such a model? If I press 
> the "3D" button in the "Mesh" menu, then nothing happens, while other models 
> from the "demo" directory are tetrahedralized.
>
>   
You should first create a volume with all the faces for gmsh to generate 
the 3D mesh.
In Gmsh,  any volume should be closed, as it is in TetGen or NetGen. All 
those
software basically do finite element meshes.

> If not, is anyone aware of software that can do this? TetGen takes as input a 
> piecewise linear complex, which cannot have intersecting triangles. I had no 
> success with NETGEN.
>
>   
No, this is pretty much everything I know that is in the public domain.
> Best regards,
>
>