If I may respond to my own note, I thought I should point out that this issue also exists when using ParaView interactively. So in the GIF image below, I just rotate my view, and the sphere in the center gets clipped depending on the distance of an object in the background. There are objects other than the terrain and ball in the scene, and I found that an extra light that I had added was exacerbating the problem, but regardless, as the Python shell indicates, even if I specify the clipping planes I want to use, as soon as a render occurs, they are set back to what ParaView (or VTK) want them to be. My desire is for there to be a way for me to set the clipping planes such that Render() won’t alter them – can it be done? (or more specifically, can it be done without editing the VTK source code?)
Thanks,
Bill