[vtkusers] Wrong Coordinates from vtkPolyData::GetPoint?

Ruediger Tornow tornow at techinfo.rwth-aachen.de
Wed Mar 21 12:16:50 EST 2001

Hi there,

I am encountering a strange behaviour concerning
the return values of vtkPolyData::GetPoint.

While accessing the data created from a vtkCubeSource 
or a vtkSphereSource, the coordinates returned are
centered to the global center (0,0,0), even if the center of 
the original Cube/Sphere is positioned e.g. at (2,2,2).
Even the GetCenter() method returns a (0,0,0).

Is this a bug in GetPoint, or do I have to do some 
coordinate transformation first? If so, where do I get
the additional information for that transformation?

The scenario is as follows:
- I used the vtkVRMLImporter to import some data.
- Data is accessed using 
If anyone knows a better way to access the Polygonal
data from the vtkVRMLImporter, please let me know.
As far as I can see it, the Importer does not provide
functions for direct access to the imported data.


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