When vertices become topologically identical?
Is it somehow connected with tolerance?
int tv0 = mesh.Vertices.GetTopologicalIndenticalVertices(v0);
The reason for asking is that for cylindrical surface mesh subdivision I get 4 identical points, while same surface with some distortion on he right has only two topolgically identical points. (no gaps at surface edge)
And this tolerance issue results only on at the edges of surfaces, when I detect closed surface condition I reset end points to start ones: