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This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
Using to following code to set opacity to an actor does not work in vtk 4.4. However, the same code works in vtk4.2.
Here are the 2-line code (pActor: pointing to a vtkActor, pRenderWindow: pointing to a vtkRenderWindow): pActor->GetProperty()->SetOpacity(dOpacity); pRenderWindow->Render();