Hi! I’m searching a way to have a closed line along the red dots. What I would like to achieve is to move every point of the green curve on the external surface by a certain distance that should be always the same (e.g. h=150 cm). I try to use the point on curve slider but it moves points on both surfaces (external and internal) and reparametrize the segments. Can you please give me an advice?
Curve_01.gh (17.8 KB)
I don’t have Lunchbox installed.
You can also just take the intersection curves, refit those and use Evaluate Curve
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Got it, Thanks!
Nice Kim, I will try some different options 
@dowazura I have 2 nooby questions on your soultion. I know what Cull Pattern and Curve Closest Point do, but I can’t understand how they work in this case. If you briefly could explain to me would me awesome. And the second one, what Invert does on Periodic (last Interpolate command)?