[vtkusers] constructing surface with vtkPoints

[Helder Carvalho]

Hi Tim,
   Im just sending this mail to thank you the first method you told me to 
use worked just fine.
   My set of points worked out an almost smooth surface.
Regards,
Helder Carvalho



>From: Tim Hutton <T.Hutton at eastman.ucl.ac.uk>
>To: "Helder Carvalho" <hel_carvalho at hotmail.com>, 
>vtkusers at public.kitware.com
>Subject: Re: [vtkusers] constructing surface with vtkPoints
>Date: Mon, 01 Sep 2003 12:00:43 +0100
>
>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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