[vtkusers] quick question...

[Theodore Papatheodorou]

Hi,
I am a bit confused. A program I wrote in the past used to work up until 
2 months ago when I upgraded to the latest VTK version. Here is a short 
snippet of some code that gets each point from a polydata structure, 
transforms it and passes it back to the polydata. I have checked whether 
the point is actually changed and it is indeed.... but the screen is not 
updated... the renderer does not show the change. I tried putting 
various "->Modified" statements but no luck. Any ideas? As I said it 
used to work fine and I have not made any changes to the code.

    polydata_source->DeepCopy(_original_polydata_source);
    polydata_source->Modified();
    polydata_source->Update();

    for (int cnt=0; cnt<polydata_source->GetNumberOfPoints(); cnt++)
    {
        (polydata_source->GetPoints())->GetPoint(cnt, coord);
        Transform(i, coord[0], coord[1], coord[2]);
        polydata_source->GetPoints()->SetPoint(cnt, coord);
    }
    renWindow->Render();

Thanks for your asnwer,
theodoros