[vtkusers] VTKPolyData to 3D image

[David Welch]

I've tried to compile the code, and it seems that one needs to have a
version of VTK greater than the latest release to run this without
compilation errors.  Specifically, you use vtkMath::Subtract, which is not
included in 5.4.2.  I'll upgrade to the nightly build and post the results
on the midas journal page.

Thanks!

On Mon, Apr 19, 2010 at 11:54 AM, David Doria
<daviddoria+vtk at gmail.com<daviddoria%2Bvtk at gmail.com>
> wrote:

> On Mon, Apr 19, 2010 at 12:39 PM, David Welch <
> dmwelch at engineering.uiowa.edu> wrote:
>
>> Thank you!   I'll let you know how it works out.  How can I add this to my
>> Paraview setup?
>>
>
> Let's keep the discussion on the mailing list so everyone can input and
> benefit.
>
> As it was part of a bigger submission (surface reconstruction), I didn't
> wrap vtkVoxelizePolyData directly. I just tried to quickly make it into a
> Paraview plugin, but it seems I have separated the code a bit differently
> than I remember.
>
> vtkVoxelizePolyData simply creates the vtkImageData with reasonable bounds
> over the polydata. Computing the distance to the surface was actually done
> in vtkPointSetSurfaceReconstrion, and then I used a vtkContourFilter to
> extract the 0 level set (the surface). You can definitely reuse most of this
> code - you just have to check the sign on the SignedDistanceToPlane function
> and mark the point as inside or outside.
>
> You could also ust vtkVoxelizePolyData to make the grid, then use something
> like this:
> http://www.vtk.org/Wiki/VTK/Examples/PointInsideObject
>
> on every point to do the inside/outside marking.
>
> Good luck,
>
> David
>



-- 
David Welch
Graduate Student
Dept. of Biomedical Engineering
University of Iowa
Lab: (319) 335-5279
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