[vtkusers] 3D surface from 2d contours

[Mathieu Malaterre]

Simon,

   This approach has come many times in this ML, and again I'll say the same thing. This is a very bad approach. Just think of the carotid arteries near the bifurcation how do you do to create a 3D surface from a slice before the bifurcation and one after ?

  I strongly suggest you to have directly a 3D approach.

  Other than that you still can use filter like vtkSurfaceReconstructionFilter or vtkPowerCrustSurfaceReconstruction 

  Or a simple approach could be, find the max number of point in your arrays of lines. Then subsample each polydata into this number of points. Make sure, for example, that  vertex 0 of each polydata is aligned in the z direction. then draw a line along all vertices 0, vertices 1, vertices 2 ...

my 2 cents,
Mathieu

> Hi all,
> 
> I have an array of vtkPolyData, each one containing a line that draws a 
> contour in the xy plane. Each vtkPolyData contour has a different number 
> of points.
> 
> I want to create some new contours by interpolating between existing 
> ones and build a 3D surface by distributing the contours along the z axis.
> 
> Anyone has an idea on how I can do that?
> 
> Thanks in advance.
> 
> 
> Simon
> 
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