Fixed a bug in ExternalContour and also added a Python version
A vtkCleanPolyData filter has been added to remove stray points. The size of the contour (in the right viewport) is now the same size as the object in the left viewport.
A vtkCleanPolyData filter has been added to remove stray points. The size of the contour (in the right viewport) is now the same size as the object in the left viewport.