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[Andrea Romanoni <>]

Hi,

a quite odd issue is bothering me from a long time.
I have a 3D Polyedron represented by a triangular mesh, and I need to
subdivide a subset of the facets, by simply one-to-four subdivision. I need
to split only the subset that meets a certain condition.

Up to now I use the Subdivision_method_3::PTQ method implemented an
extension of CGAL::Loop_mask_3<Polyhedron_3> where 
   - the  edge_node(Vertex_handle v, Point_3 &pt) function puts the point pt
in the middle of the edge if the facet or the neighboring facets meet the
condition, otherwise copies the position of v in pt;
   - the vertex_node (Vertex_handle v, Point_3 &pt) function copies the
position of v in pt;
   - the border_node (Halfedge_handle e, Point_3 &ept, Point_3 &vpt) acts as
the edge_node function

After this process duplicate vertices are generated and I manually collapse
the corresponding edges.

Is there a more efficient and elegant way?


Thanks,

Best Regards,

Andrea





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