I need to write a routine that allows my users to grab a bunch of geometry, and waterline it as the mouse moves over the geometry in a z direction. I tried intersect, but if the geometry is not bolleaned it gives strange results and the overhead on 3-400 bits of geometry is high, super sluggish.
clipping plane does what i need, and its very fast, so id like to grab existing geometry, set it to transparent (the easy part) then copy it to conduit, and apply a clipping plane in the conduit, marry clipping plane of the existing geometry, so that the exposed (perhaps bright yellow) conduit clipped geometry shadows the main geometry and effectively provides a fast “waterline”.
Im stumped on how to pull this off, or if its even the best way?
output desired is something along these lines from the b9 creator software.