vtkGlyph3DMapper::GetBounds incorrect when the input polydata is empty
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
When working on an empty polydata, vtkGlyph3DMapper::GetBounds reports the bounds of the glyph.
IMHO, this is not logical, since the glyph's bounds are unrelated to the rest of the scene. For instance, it disrupts vtkRenderer::ResetCameraClippingRange.
I believe GetBounds should just return a vtkMath::UninitializedBounds in this case.