[vtkusers] how to make curvy lines?

[david michell]

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hi everyone,
I was working on a random pointset.
I constructed lines out of a few hundered points.
The lines are like follows

________________
                \
                 \
                  \
                   \____________________
                                        \
                    _____________________\

I want to make them curvy, the edges must be curved and not sharp edges, so that it appears smooth.
What should I do? Is there any class in vtk which does that?
Please help me.
Thank you,
David Michell