I think trying to align a lot of control points that make up a surface to a predetermined circular are may be more trouble than it's worth.

It might be easier to reconstruct the surface using a network where the circle is already represented.

But once a surface exists already, the need to get points to line up like that may be a sign that you desire the surface to be more consistent.


I know that Rhino has the ability to "relax" points along a curve or surface, or is it called "averaging", when the selected points seem to align along some kind of logical alignment as if it was a strand of hair or rubber band and all the points would soften their positions to line up less erratically... kinda like a Jheri Curl for points!

That's probably way down the development list for sure... right before the 'Sooooul Glow' tool! ;-)