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[mriem <>]

Hi 

I am using CGAL for producing a Constrained triangulation in 2d.

At some point in my program, I need to remove vertices. I use 

dt.remove(fh->vertex(li))


Most of the times it works, but there are some cases where apparently the triangulation becomes invalid.

Attached are two images. The first shows a mesh. I want to remove the vertice inside green triangle (which is not part of the mesh, only the others are)

When I remove the vertex 9, the triangulation becomes invalid

Note that vertice 82 is inside a triangle ?? this should not happen.

Can anyone help?

Thanks 

Miguel

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