[vtkusers] normal vector at intersection point

[untalsrtal]

Hi,

this example works fine to find the intersection point of a line with a
surface:

http://www.vtk.org/Wiki/VTK/Examples/Cxx/DataStructures/ModifiedBSPTree_IntersectWithLine

but can someone tell me how to find the surface NORMAL at that point?

Thanks a lot in advance,

Un tal sr. t.a.l.



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