John A. Gregory

• A C squared polygonal surface patch
• Bumblesnot
• Constrained optimization in the calculus of variations and optimal control theory
• Convexity of Bezier nets on sub-triangles
• Filling polygonal holes with bicubic patches
• High order continuous polygonal patches
• Non-uniform corner cutting
• Piecewise interpolation theory for functions of two variables
• Polygonal patches of high order continuity
• The weighted v-spline as a double knot B-spline