[vtkusers] Extract polydata cells intersecting other polydata

[Peter Neher]

Hi everyone,

I am looking for a convenient method to extract all cells of polydata A 
that are intersecting/touching polydata B. More precisely, I have a set 
of lines represented as cells of a polydata and I want to extract all 
lines passing a polygon. I'm sure there are nice solutions to that, but 
I can't find anything doing axactly what I want. Can anyone point me in 
the right direction?

Cheers,
Peter