[vtkusers] Uniform subsampling of mesh (point cloud) and normals

[Øystein Skotheim]

Hello. I have a high-resolution mesh that I would like to subsample to a 
given resolution (e.g. I want to specify that the vertices should be 5mm 
apart from each other).

Are there any decimation filters in VTK that can do this? (I do not want 
to specify the number of output polygons, only the vertex spacing).

(I was playing with vtkCleanPolyData, but it destroys the topology of my 
mesh)

Also, I would like to smooth the normals in the mesh (to minimize 
influence from local, high-frequency variations in the geometry). 
Ultimately I want to end up with list of points with associated (smooth) 
surface normals.

Any opinions on how to do this correctly are appreciated :-)

Cheers,

---
Øystein Skotheim
Research Scientist
SINTEF ICT