[vtkusers] Surface Rendering from point set.

[Alex Liu]

Thanks for your reply Cory.
I noticed that vtkPolyDataNormals couldn't find any Normals in my case.
So I tried vtkTriangle. and Passed 3 nearest neighbor points to find the
normals.
vtkTriangle has a function called ComputeNormal(); to compute normals.

With this function I could find all the normals, but the problem I'm facing
right now is all the normals are 
facing in one direction. I need to some how filter out Inliner normals and
keep only the outliner normals



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Alex Liu
+15574855474
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