[vtkusers] vtkImageData from a closed vtkPolyData

[David Gobbi]

Hi Mathieu,

You can convert triangle strips into individual triangles using the
vtkTriangleFilter.  This is not necessary with
vtkPolyDataToImageStencil, though; it will work with triangle strips,
too.

Look at Hybrid/Testing/Tcl/TestImageStencilWithPolydata.tcl

   David



On Tue, Apr 15, 2008 at 10:29 AM, Mathieu Coursolle
<mcoursolle at rogue-research.com> wrote:
> Hi VTK users,
>
>  I have a closed vtkPolyData (a modified sphere), which is composed of
> triangle strips.
>  I would like to create a vtkImageData to generate a mask of the inside
> voxels of the vtkPolyData.
>
>  Is there an easy way to do that using vtk classes?
>
>  I am experimenting with vtkPolyDataToImageStencil right now with no
> success.
>
>  Looking at the docs, it says:
>
>  "The input polydata must contain polygons (or other 2D cells) that form a
> 3D surface that encloses a finite volume."
>
>  I am not sure I understand if I can use my vtkPolyData as an input then?
> How can I transform my triangle strips polydata into polygons that will
> allow the mask to be generated?
>
>  Thanks!
>
>  Mathieu
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