Q: How to make normal point outward?

[Patric Weis]

Try the vtkPolyDataNormals filter!

The only thing you must be aware of is to check if the edge loop of the
reference polygon (the first one) is oriented in the right-hand rule
sense. If not so, you simply can use FlipNormalsOn() to invert the
orientation of the faces.


Patric


"J. Scott Pendergrass" Wrote:
> 
> VTK Gurus:
> 
> I've got a 3D object that is defined in vtkPolyData form. I'd like to make
> sure that all of the polygon normals point "outward" in the right-hand rule
> sense. Is there an easy way to do this within VTK?
> 
> Thanks in advance,
> 
> Scott
> 
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