Titlebook: New Advances in Computer Graphics; Proceedings of CG In Rae A. Earnshaw (Head of Computer Graphics),Brian Conference proceedings 1989 Spri

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PictureEditor: A 2D Picture Editing System Based on Geometric Constructions and Constraintst numerical instability. Our system, however, satisfies constraints by converting them to construction operations. This is a stable technique and it enables us to check consistency among constraints in a straightforward manner.

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An Interactive Display for the 21st Century: Beyond the Desktop Metaphorisms remains an inspired view of a useful personal computer. By 1970 Alan Kay at Xerox Palo Alto (California) Research Center was proposing a dynamic book-sized computer, a ., that would satisfy most of the needs of users of all ages. By 1973 a group of his colleagues had built a small desk-sized co

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Conic Rescue of Bezier Fountsfrequently been defined by Bezier splines. Pratt (1985) has developed a means of defining fount outline by using conic sections. Furthermore, he has shown how conic sections can adequately be used to represent curves that were previously thought to require cubic splines. This paper presents an algor

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Generating n-Sided Patches with Partial Differential Equationse than four distinct edges. We present a method where this problem is solved by regarding the generation of such a surface as a boundary value problem, where the surface is represented by a . parametric patch which is the solution of an elliptic partial differential equation.

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Reconstructing Smooth Surfaces from a Series of Contour Lines Using a Homotopy curves as well as linear line segments. It is shown that the method includes the triangulation as a special case and generates smooth parametric surfaces from contour line definitions using a homotopy. First, a heuristic method is presented that finds the optimal path on the toroidal graph. Then th

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