Fix vtkDecimatePro crash with degenerate triangles
vtkDecimatePro expects valid triangles and crashes when processing degenerate triangles (2 or 3 identical vertices). Degenerate triangles are now skipped.
vtkDecimatePro expects valid triangles and crashes when processing degenerate triangles (2 or 3 identical vertices). Degenerate triangles are now skipped.