[vtkusers] New vtkPolyDataToImageStencil

[David Gobbi]

Hi Michael,

I committed some fixes to the code specifically with respect to using
extruded polylines to create stencils.  Please let me know if you have
a chance to test your code again.

Eventually, I will enhance the class so that polylines can be used
directly to create 2D stencils, but probably not before VTK 5.2 is
released.

    David



On Thu, Feb 21, 2008 at 11:48 AM, Michael Knopke <Michael.Knopke at gmx.de> wrote:
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>
>
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> Hello David,
>
>
>
> I was eagerly testing your improved class, as I use it with good results for
> volume cropping of medical data and hoped for a nice speed improvement.
> Unfortunately I get a lot of bad results. I won't say that you class is
> faulty, chances are high that I do something wrong. All I can say for now is
> that my code worked before but when upgrading only the two files and then
> rebuilding VTK, my code produces wrong results (wrong parts are cut out or
> sometimes the shape is different). Converting back those classes solved the
> problems.
>
> Basically what I do is: creating a polyline (user drawn) on a orthogonal
> image, building a tube like shape, reorienting the new object (same as
> Image) and then using your class to extract the inside or outside.
>
> If you want I'll post the code here (next week, because I've got a lot of
> work and It's a bit scattered through my app).
>
> Anyway, it might also be an issue of inconsistency, because I updated only
> this class and not the whole cvs. (vtk built without problems though)
> Unfortunately I can't update because of some problems with the
> borlandrenderwindow which seems to be incompatible with the latest cvs (will
> add a mantis entry).
>
> I use version 1.20 haven't tested with 1.21 only with 1.22 which fails. My
> CVS snapshot is from: 8/20/2007 so quite out of date.
>
>
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> Regards,
>
>
>
> Michael Knopke
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>
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