[vtkusers] vtkWindowToImageFilter --> black image

[Karin Faulhaber]

Hi,


I'm trying to print the contents of a vtkPanel to a file:

...
vtkRenderWindow renWin1 = renPanel1.getRenderWindow();
vtkWindowToImageFilter wtoif = new vtkWindowToImageFilter();
wtoif.SetInput(renWin1);
	
vtkPostScriptWriter psWriter = new vtkPostScriptWriter();
psWriter.SetInput(wtoif.GetOutput());
psWriter.SetFileName("earth.ps");
psWriter.Write();
...

But no matter if I use ps or tiff, the image is black (I did try
changing the colors of Actor and background). Does someone have any idea
about that?


Thanks for your help!
Karin