ok, made it work thanks to this one, in case someone from the future has the same problem -
A bit of raycast and it works great on non planar geo as well. If I get some time I clean up the mess I made and post a shot of the node graph, if I don’t forget about it that is.
edit -
just in case anyone finds this useful, or is able to improve it. Works great with planar geo or curves, I guess the weak point is non planar and that raycast method, it’s where things can become glitchy -
geoNodes_curve_boolean_v03.blend (1.1 MB)