CGAL users discussion list

[Wei-Dong Lian <>]

Dear CGAL,

I tried the example http://doc.cgal.org/latest/Mesh_3/Mesh_3_2mesh_3D_image_8cpp-example.html for multi-domain 3d mesh generation from labeled image. It works well for that example.

I created a simple 3D labeled image (see attachment), including two domains for which one domain is completely inside another domain, i.e., a big sphere contains a small sphere. In this case, the generated mesh only contains one domain, i.e., the small sphere is eaten up. I tried different criteria, I still can not generate the mesh with two domains.

I do not know if this is a bug of Labeled_mesh_domain_3 that does not deal well with the domain classification, or it is the intrinsic drawback of the meshing algorithm. Is it easy to fix this if I want to change it myself? I am totally new to CGAL, any suggestion would be appreciated. 

BTW, I went through the manual and examples, I did not find any information about how to input the multi polyhedron domains to generate the 3D mesh. Most examples only consider a single domain. Is it supported now in CGAL?

Thanks for your attention

BR,

Weidong

Attachment: two_ball_enclosed_together.zip
Description: Zip archive