[vtkusers] vtkRenderWindow::SaveImageAsPPM question

[Wolfram H Volpi]

How can I force a vtkRenderWindow to write an image to a file repeatadly.
SaveImageAsPP sets up the pipeline, but later calls to Render are not
Saving the new Images.


vtkRenderWindow renWin1
	renWin1 AddRenderer ren1
	renWin1 SetFileName temp1.ppm
	renWin1 SaveImageAsPPM

for {set i 0} {$i < 4} {incr i 1} {
	
	renWin1 Render
	renWin1 Modified
	$cam1 Azimuth 30
}

Thank you for your help,
Wolfv