CGAL users discussion list

[Mael <>]

Hello,

I am not sure I fully understand what you want to do, but here are a 
couple methods that are available in CGAL and can help you with non 
manifold vertex / edges:

- Polygon_mesh_processing::is_non_manifold_vertex()
- Polygon_mesh_processing::non_manifold_vertices() --> to collect all 
the nm vertices
- Polygon_mesh_processing::merge_duplicated_vertices_in_boundary_cycle() 
--> create nm vertices when the same point appears multiple times on a 
boundary
- Polygon_mesh_processing::duplicate_non_manifold_vertices() --> split 
nm vertices into multiple distinct vertices so that the mesh is 
combinatorially manifold
- 
Polygon_mesh_processing::duplicate_incompatible_edges_in_polygon_soup() 
--> upcoming, currently in PR https://github.com/CGAL/cgal/pull/4055

Hope this helps you.

Best,
Mael

On 18/02/2020 13:51, Frank Dz wrote:
> Hi~ I want to know is there a method for non-manifold mesh processing? I
> searched on Google, the most answers are about "checking whether a vertex of
> a polygon mesh is non-manifold" and so on.
>
> Thus is there a method for non-manifold mesh processing? For example, one
> may want to do navigation to iterate on the mesh. And do the double covering
> on the mesh to get a manifold mesh.
>
>
> Many thanks for any help!
>
> Best,
> Frank
>
>
>
> -----
> be open, be creative, be critical
> --
> Sent from: http://cgal-discuss.949826.n4.nabble.com/