VTK line Intersection improvement
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
The method vtkLine::Intersection does not give the u,v when the two segments are colinear. This is annoying as the two segments might or might not overlap. It would be nice to be able to compute whether or not it is the case here.
For reference, see: https://github.com/Kitware/VTK/blob/master/Common/DataModel/vtkLine.cxx#L127-L130