That was my initial thought, but after unioning A + B, dividing the result just ends up with C. I assume I need something other than Boolean Union that would cut the new points from A into the edges of B's triangles.
I've baked out some example geo and loaded it into a new file where some points work, others don't. Look around the junctions when toggling the divide sop. I'm using Houdini Indie. I'm assuming a hiplc file can also be opened in the full version. Appreciate the help!
The triangulation didn't work on some points because the mesh wasn't connected there. there was a super tiny gap. I fixed it with a peak node. take a look. btw, you don't have to export not changing geo for every frame.
