[vtkusers] Interference on the screen, using 2 actors

[David C. Thompson]

> When I try to display a dataset and an stl file in a single
> renderwindow, I observe interference of the two. In the image below
> this is visible as the darker en lighter orange spots. The pattern of
> spots change continuously if I rotate the image, and is very
> disturbing. The interference is still visible if the stl files
> completely inside the dataset. Could anyone explain me the reason for
> the interference or suggest a solution ?
It sounds like your problem is z-fighting:
	http://en.wikipedia.org/wiki/Z-fighting
See
http://www.vtk.org/doc/nightly/html/classvtkCoincidentTopologyResolutionPainter.html
for more information on how to deal with it in VTK.

	David