[vtkusers] Ordering lines

[Carl Hetherington]

Hi,

I've got the output of a vtkCutter as a set of lines.  I'm looking for a
way to collect these multiple (unordered) lines into a single polyline.

The best approach I have found so far is to use a vtkCellLinks to find the
lines which use each point.  It seems, though, that I have run into a
limitation of the C++/Python interface.

I can do something like

>>> cutter = vtkCutter()

... stuff ...

>>> slice = cutter.GetOutput()
>>> cl = vtkCellLinks()
>>> cl.Allocate(10000, 1000)
>>> cl.BuildLinks(slice)
>>> cl.GetNcells(1)
2
>>> cl.GetNcells(2)
2

Is there any way I can get at the details of vtkCellLinks from Python?  Or
perhaps there is another way to collect a cutter's output lines into a
single polyline?

Thanks,

Carl