Deforming a part of a spline Posted on 22/12/2015 by admin Friday Q&A 23: Deforming a part of a spline from CyBear on Vimeo. In this tutorial I reconstruct the effect seen in a commercial. The shape of a spline is copied to another spline, but only in a restricted (fall off) area. CybBear would not be CyBear if we added a bit more. Sound.