[vtkusers] Fixing vtkPolyDataToImageStencil

[David Gobbi]

Hi Ricardo,

Thanks for the feedback.

I can briefly explain why the problem occurred.  The algorithm has
two major steps: 1) cutting the polydata surface into 2D contours,
and 2) rasterizing the contours in order to make a binary stencil.
My patch fixes numerical stability problems step 1, because I have
very good reason to believe that step 1 was where the errors were
occurring.

 - David


On Fri, Sep 19, 2014 at 10:47 AM, Ricardo A Corredor
<ra.corredor at gmail.com> wrote:
> Great!
>
> I had many times this problem. My solution always was to decrease output
> image spacing and/or reduce tolerance, but the result was very random and I
> never understood the problem.
>
> I'll try to test it in some datasets.
>
> Ricardo