[vtkusers] Voxelizer

[David Gobbi]

Hi Hari,

It is difficult for me to guess where the problem lies from your
description.  Could you clarify 'it doesn't work'?  Is the result
all black, all white, does the program crash, does your computer
burst into flames?  If you send me a short .tcl or .py script I
can check it for you.

 - David

P.S. Please ignore my facetiousness, I'm in a weird mood.

--
  David Gobbi, MSc                       dgobbi at irus.rri.ca
  Advanced Imaging Research Group
  Robarts Research Institute, University of Western Ontario

On Thu, 21 Mar 2002, Hari Sundar wrote:

> Hi David,
>
> thanks for the help. I modified the example and managed to get a volume
> for the sphere. However, it doesn't work when I use a polydata (that I
> read in from a vtk file). I used GetBounds to determine the final volume
> size, therefor I can't be missing the polydata.
>
> Any suggestions ?
>
> thanks,
> Hari
>
> On Wed, 20 Mar 2002, David Gobbi wrote:
>
> > Hi Hari,
> >
> > In VTK 4.x there is a vtkPolyDataToImageStencil filter that can
> > be used to mask an image using vtkPolyData.  An example is located
> > in VTK/Hybrid/Testing/Tcl/TestImageStencilWithPolydata.tcl.  You
> > would have to replace the image reader with something that will
> > produce a blank initial image, e.g. a vtkImageGridSource where
> > the LineValue and FillValue are both set to zero and where the
> > DataExtent, DataSpacing and DataOrigin are correctly set.
> >
> > The vtkPolyDataToImageStencil is not perfect, sometimes it 'leaks'.
> >
> >  - David
> >
> > --
> >   David Gobbi, MSc                       dgobbi at irus.rri.ca
> >   Advanced Imaging Research Group
> >   Robarts Research Institute, University of Western Ontario
> >
> > On Wed, 20 Mar 2002, Hari Sundar wrote:
> >
> > > Hi,
> > >
> > > Is there any class in VTK that will allow me to get a binary volumetric
> > > data from a polygonal model ?
> > >
> > > thanks,
> > > Hari
> > >
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>  375-C Buell Apartments,		   Dept. of ECE
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