Patent ID: 7272541

Claim:
A computerized method for manipulating a plurality of control points, the plurality of control points defining a surface in a design for manufacture of parts and forming a plurality of rows along two non-parallel directions U and V, the method comprising: adjusting the position of a control point in an intermediary row in the U direction to provide a smooth transition from the row of control points corresponding to a first edge along the U direction to a row of control points corresponding to a second edge along the U direction while retaining positions of control points in said first and second edges; adjusting the position of the control point in an intermediary row in the V direction to provide a smooth transition from the row of control points corresponding to a first edge along the V direction to a row of control points corresponding to a second edge along the V direction while retaining positions of control points in said first and second edges; and computing the new position of the control point based on the corresponding adjusted positions of the control point in the intermediary row in the U direction and the control points in the intermediary row in the V direction; wherein the surface is selected from the group consisting of a Béziers surface and a Nurbs surface, and wherein the design for manufacture of parts is displayed in a CAD system.