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This paper presents algorithms for computing offsets of NURBS curves and surfaces. The basic approach consists of four steps: (1) recognition of special curves and surfaces; (2) s...
This paper is concerned with the mathematics and formal specification of "set-like" operations for the mixed dimension cellular objects of the Djinn Application Programm...
Alan E. Middleditch, Chris Reade, Abel J. P. Gomes
This article presents an efficient and robust algorithm that computes the intersection curve of two ruled surfaces. The surface intersection problem is reformulated as a zero-set ...
The numerical approach to solving geometric constraint problems is indispensable for building a practical CAD system. The most commonly-used numerical method is the Newton
The method of consecutive revolving or extrusion of a geometric entity in a CAD system is typically used by a designer to represent complex solids. While it is evident that consec...