[vtkusers] connected components

[Petru Pau]

Hi all,

I have a 3D body (the teepot, you all know it) and cut it with a 
horizontal plane.
I collect the slice in a vtkPolyData. I expect it to be a polygonal 
line, not necessarily
connected.

I need to extract the connected components of this polygonal line, as 
they are in the
graph of cells.

Right now I use the usual algorithm for extracting connected components from
this graph. Somehow this gives a bit too many connected components
(some of them are edges - with two points!), so I suspect that either my 
implementation
of that algorithm is bad, or I missed something from the specifications 
of datasets.

Is there an easy way to do this? What does GetPiece do? Why would it 
return an int?!?

Petru