Restrict some surface control points to a plane or cplane

hi
Is it possible to restrict some surface or curve control points to a plane or cplane? So that these points can not be moved outside this plane. in such a way that if the plane is modified,that the control points change as well.

And is it possible to group (or order in seperate layers) certain surface or curve control points with the possibility that a control point can belong to two different groups?

this would be handy for more advanced ship hull fairing…

cheers Bas

Hi Bas - not in plain Rhino, no. You’d need at least some scripting for this.

-Pascal