[vtkusers] Correct approach for assembly of polylines?

[jarv0075]

I'm currently trying to reassemble some polylines that vtk broke up into
several different cells...  My current approach is to use nested loops to
match up the end points.

Is there a better way to do this?

This is using the vtkcutter output which then gives many different
polylines, some closed, some not, so I can't just plug it into a polyline
loop.

Is there a way to use a polyline loop over for each set of polylines with
matching end points and keep adding the output to a polydata set?

I'm still very much a VTK newbie and always am unsure whether a certain
operation is atomic or if it's going to do some big propagation through the
entire pipeline.

Thanks