[vtkusers] How to extract inner faces of intersecting meshes?

[Bill Lorensen]

You could use vtkClipPolydata with an ImplicitVolume that uses the
discrete volume (the input to discrete marching cubes). You can only
clip with one discrete value at a time however so if there are
multiple discrete labels in the volume you'll have to threshold the
discrete values and create a volume with a single value.


On Thu, Dec 3, 2009 at 3:35 PM,  <lynx.abraxas at freenet.de> wrote:
> Hello!
>
>
> I  need  to extract the inner faces of a big mesh that intersects with a small
> mesh. It doesn't have to be a proper boolean intersection like a  cookie  cut.
> Just the faces that are completly inside the smaller mesh would be sufficient.
> The meshes are discret marching cube meshes and should all be closed surfaces.
> My  blender python script did all this nicly with a test data set but now with
> my actual big dataset it would run a few years to finish:-(
> Is there a chance to do this with vtk to speed things up?
> I'm wondering if http://www.bioengineering-research.com/vtk/vtkCollisionDetectionFilter.htm would be of any help here to realize this?
>
> Any help or hints are very much appreciated.
> Thanks
> Lynx
>
>
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