CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

xianhai meng wrote:
> I mean, for example, I have two intersected surfaces, both are represented by
> triangular mesh. At the intersection line between the two surfaces, the two
> meshes are watertight, but not consistent in topologcial.
What do you mean by  "not consistent in topologcial" ?

Are you dealing with closed polyhedral surfaces?

>  
> I want to use the Polyhedral_mesh_domain_3 to contain the two surfaces, and
> generate tetrahedron mesh by Mesh_complex_3_in_triangulation_3.
>  
> However, I was confused by how to input the two surface into mesh_domain.
>  
> Should I convert the two triangle meshes of two surfaces into Polyhedron in
> CGAL and set it to mesh_domain, like below:
>  
> Polyhedron polyhedron;
> //convert two meshes into polyhedron
> Mesh_domain domain(polyhedron);
> C3t3 c3t3 = CGAL::make_mesh_3<C3t3>(domain, criteria, no_perturb(), 
> no_exude())
>  
> But it seems to that the no-manifold are not supported by Polyhedron and how to
> do for the intersected part?
>  
> Or do I need to construct two Polyhedron in CGAL for the two surfaces? But if
> so, how to input two Polyhedrons into the mesh_domain?