Right now, the volume rendering crop ROI excludes everything outside the ROI. Does VTK support the opposite? Meaning, exclude everything INSIDE the ROI? This would be useful for certain kinds of cutaways. I know it’s possible to do this kind of thing with the crop volume module and other methods, but those aren’t interactive (I think) like the volume rendering ROI crop is.
If VTK supports this (or there’s another way to do it), I’m willing to look into how to do it (probably with more than a few questions along the way).