[vtkusers] constructing surface with vtkPoints

[Tim Hutton]

vtkSurfaceReconstructionFilter and vtkPowerCrustSurfaceReconstruction both 
return a surface with different number of points to the original output.

Options:

1. if your object is convex, then use vtkDelaunay3D followed by 
vtkGeometryFilter
2. if your points have some order in them (eg. they come from a 
laser-scanner and are thus organised into stripes, or are from segmented 
CT/MRI images) then use that order to create some polys.
3. if you have surface normals in addition to the points then use them to 
compute an implicit function (-ve inside, +ve outside) and vtkContourFilter 
at zero
4. if your surface is small then add polys manually
5. search for an algorithm that only uses the original points

tim

At 17:48 31/08/2003 +0100, Helder Carvalho wrote:
>Hi users,
>
>Im trying to create a closed 3d surface with exactly the same number of 
>points that i provide with a set vtkPoints I created. I've tried doing 
>that with vtkSurfaceReconstructionFilter, but it construct a new polydata 
>with a diferent number of points. So i would like to build some polys with 
>the vtkpoints so i can build a polydata with the same points of the 
>vtkPoints. Anyway i can do that??
>
>thanks in advanced,
>Helder Carvalho
>
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