Curvature of singular Bezier curves and surfaces
This paper presents a general approach for finding the limit curvature at a singular endpoint of a rational Bezier curve and the singular corner of a rational Bezier surface patch. Conditions for finite Gaussian and mean limit curvatures are expressed in terms of the rank of a matrix. (C) 2011 Elsevier B.V. All rights reserved.
curvature bezier curves bezier surface patches singular points