Design techniques for the definition of solid objects with free-form geometry

Solid modellers and free-form surface systems have been evolving to a large extent separately for fifteen years or more. Free-form surface techniques must now be integrated into solid modelling systems, since many engineering parts involve this type of geometry. The present paper classifies free-for...

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Bibliographic Details
Published in:Computer aided geometric design 1984, Vol.1 (3), p.207-225
Main Authors: Várady, T., Pratt, M.J.
Format: Article
Language:English
Subjects:
Computer aided design
free-form (sculptured) surfaces
solid modelling
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Summary:Solid modellers and free-form surface systems have been evolving to a large extent separately for fifteen years or more. Free-form surface techniques must now be integrated into solid modelling systems, since many engineering parts involve this type of geometry. The present paper classifies free-form surfaces into four categories for design purposes, depending on the degree of geometric constraint involved in their definition. Proposals are then made for free-form design techniques suitable for use in solid modellers. A survey of existing solid modelling systems is included, with indications of the techniques currently available for the design of free-form solids.
ISSN:0167-8396
1879-2332
DOI:10.1016/0167-8396(84)90009-8