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[tang <>]

Dear CGAL developer,

I noticed that CGAL can generate quality mesh from 3D polyhedral domain from
here:
http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Mesh_3/Chapter_main.html

one example shows as follows:
...

int main()
{
  // Create input polyhedron
  Polyhedron polyhedron;
  std::ifstream input("data/elephant.off");
  input >> polyhedron;
   
  // Create domain
  Mesh_domain domain(polyhedron);
  
  // Mesh criteria (no cell_size set)
  Mesh_criteria criteria(facet_angle=25, facet_size=0.15,
facet_distance=0.008,
                         cell_radius_edge_ratio=3);
  
  // Mesh generation
  C3t3 c3t3 = CGAL::make_mesh_3<C3t3>(domain, criteria, no_perturb(),
no_exude());
...


Now my questions are:
1) can CGAL work if there are multiple polyhedral defined, for example:
Mesh_domain domain1(polyhedron1), domain2(polyhedron2);
how to let CGAL generate mesh for domain1 and domain2? run 
CGAL::make_mesh_3<C3t3>
one by one? however, in my project polyhedron1 is totally inside
polyhedron2, how to do?

2) if there are many common facets (triangles) in polyhedron1 and
polyhedron2, how to use this function to let the CGAL generate meshes which
are matched on the interface of two domains?

Thanks,
Zhanghong Tang





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