Normally when you interactively place a fiducial in the 3D view, the cursor/placement fiducial jumps to the intersection point closest to the camera of whatever is visible. For example, let’s say I have a body with a skeleton. I have a segment for the skin and a segment for the bones. If I turn the opacity down for the skin so I can see the bones, then I try to place a fiducial/markup point on the bones, it will jump to the skin as it’s the point nearest to the camera that’s visible.
Is it possible to force placement to a single segment only, such that it will ignore all other segments? That is, for the above example, can I force intersection tests to only be on the bones and ignore the skin?
Thanks!
-Hollister