I have a 2D sketch that I need to deform much like freeform does to a surface in 3D. I need to keep the sketch constrained in a plane but move certain areas on the sketch and have the other areas distort accordingly. Any ideas on how to accomplish this?
What are you trying to do that you can't do with a 2D sketch of a spline?
Constrain each end of a spline, and add 1 or more spline points, and move them as required. What additional control are you looking for?