[vtkusers] Re: black polygons

[Louis Desjardins]

Hello,

So I have a clue as to why I am getting those black polygons..

I am slicing an unstructured grid using vtkCutter, and placing a 
vtkPlaneSource over it

When I remove the sliced unstructured grid actor, then the black polygons 
disappear.  So it seems like there is some overlapping between the plane 
source and unstructured grid actor?

If anyone has any suggestions I would greatly appreciate it?

Thank you
LD