In a shape manipulation method, relocation information is received indicative of an intended change in position of a target location on a Bezier shape, the contour of the Bezier shape being governed by control points. In response to the relocation information, new positions are determined for canonical...http://www.google.fr/patents/US6911980?utm_source=gb-gplus-shareBrevet US6911980 - Manipulation of curves and surfaces
