How to move control points of a spline?

I have a real beginner problem. How can i move the control points of a spline? I did a loft between two splines and now i want to change one control point, so that the loft changes also. How is it possible to move control points? thank you for your help!

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test1.3dm, 31 KB
test1.ghx, 114 KB

Replies to This Discussion

Permalink Reply by taz on September 18, 2010 at 7:47pm

Well, you can extract the NURBS control polygon [ControlPolygon], select a control point from this list, move it and replace this transformed point with it's original from your list of control points. Then create a new curve.

Or if manipulating control points is how you would like to control your lofted surface, it might be best if you create your curves from points referenced from Rhino to create a hierarchy with your geometry. Then you can graphically move your control points to automatically update the curves and surface.

Permalink Reply by Mario Fullone on June 22, 2012 at 5:00am

hello,
I need to move the control points. I can not redraw the spline with the new control points because I have to edit a Voronoi.
I can not even move the control points by Rhino because I have to use a point attractor, so I need to move the control points with a grasshopper.
Can I move the control points without having to redraw the curve Grasshopper?
thanks

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