Hi, I want to use the rhino “setpt” command in Grasshopper for some surface（such as make a surface flatten zero in Z ），Is there any ways to achieve this？C# or other script？
Is your goal to planarize a surface by manipulating its control points?
Yes，in rhino，any curve surface or polysurface can use setpt to planarize, but in gh can’t find the same way.
OK, I didn’t know about
SetPt, but couldn’t you get a similar behaviour in Grasshopper by projecting the surface to a desired plane?
Have a look at this demo…
SetPt Demo_re.gh (10.5 KB)
Thanks! It works perfectly!