[vtkusers] vtkProgrammableGlyphFilter C++ class Issue

[Steffen Oeltze]

Hi,

I have written a class in C++ that is using a 
vtkProgrammableGlyphFilter. In the method that is called for each glyph, 
I pass a pointer to the filter. By doing so, I can access the input data 
of the filter and its associated point data arrays in the method. I need 
the latter for glyph modification. My problem is, that I cannot access 
the glyph source and the vtkTransform that I am using for positioning 
the glyphs in a similar manner. Instead, I have to define both globally. 
So far that has not been a problem. However, now that I am using several 
instances of my class, I run into problems (the glyphs are not visible 
anymore in a viewer that uses the second instance). I guess that these 
problems are related to my global definitions.

Any help is deeply appreciated.

Sincerely,
Steffen

Here, a code snippet:

g_vertexGlyph = vtkSmartPointer<vtkSectorSource>::New(); // globally defined
         g_vertexGlyph->SetOuterRadius(0.05);
         g_vertexGlyph->SetInnerRadius(0.0);
         g_vertexGlyph->SetStartAngle(0.0);
         g_vertexGlyph->SetEndAngle(270.0);
         g_vertexGlyph->SetCircumferentialResolution(12);
         g_vertexGlyph->SetZCoord(0.0);

     g_vertexGlyphTransform = vtkSmartPointer<vtkTransform>::New(); // 
globally defined

     vtkSmartPointer<vtkTransformPolyDataFilter > glyphTransform = 
vtkSmartPointer<vtkTransformPolyDataFilter>::New();
         glyphTransform->SetInput(g_vertexGlyph->GetOutput());
         glyphTransform->SetTransform(g_vertexGlyphTransform);
         glyphTransform->ReleaseDataFlagOn();

     vtkSmartPointer<vtkProgrammableGlyphFilter> progGlyphs = 
vtkSmartPointer<vtkProgrammableGlyphFilter>::New();
         progGlyphs->SetInput(graphToPoly->GetOutput());
         progGlyphs->SetSource(glyphTransform->GetOutput());
         progGlyphs->SetColorModeToColorByInput();
         progGlyphs->SetGlyphMethod(glyphAttribModif, (void *)progGlyphs);
         progGlyphs->ReleaseDataFlagOn();