[vtkusers] How to change source in vtkProgrammableGlyphFilter

[David Doria]

On Mon, Aug 23, 2010 at 11:26 PM, Jong Youl Choi <jychoi at indiana.edu> wrote:
>
> Hi all,
>
> I have tried to change a source (from sphere to cone) in
> vtkProgrammableGlyphFilter with no luck. My code is as follow:
>
>        vtkProgrammableGlyphFilter *glyph =
vtkProgrammableGlyphFilter::New();
>        vtkSphereSource *sphere = vtkSphereSource::New();
>        glyph->SetInput(plot); // plot is vtkPolyData
>        glyph->SetSource(sphere->GetOutput()); // sphere is vtkSphereSource
>        glyph->SetGlyphMethod(CalcGlyph, glyph);
>
> And CalcGlyph is defined:
>
> void CalcGlyph(void *arg)
> {
>        vtkProgrammableGlyphFilter *glyph = (vtkProgrammableGlyphFilter*)
arg;
>        VTK_CREATE(vtkConeSource, cone);
>        glyph->SetSource(cone->GetOutput());  // Tried to reset the source
>
>        double xyz[3];
>        glyph->GetPoint(xyz);
>
>        cone->SetCenter(xyz);
> }
>
> Is there any way to replace or change the source initially defined in
> vtkProgrammableGlyphFilter? Thank you for your help in advance.
>
> Thanks,
> Jong
>
> --
> Jong Youl Choi

I'm not familiar with vtkProgrammableGlyphFilter, but it doesn't sound like
you're doing anything that vtkGlyph3D can't do:

http://www.vtk.org/Wiki/VTK/Examples/Cxx/Visualization/ScaleGlyphs

David
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