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Proceedings Paper

Constraint-based solid modeling with geometric features
Author(s): J. J. Zhang; A. E. Middleditch; R. S. Latham
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Paper Abstract

Engineering design practice usually follows a design hierarchy. Constraints more or less reflect engineering requirements. But constraints are practically useful only when they are correctly embedded into design hierarchies. The concept of geometric features is introduced to serve the following purposes: to allow a designer to work with the conventional design hierarchy; to control the effect of constraints; and to decompose a complicated constraint based geometric modeling problem into simpler ones. Geometric features are constructed hierarchically. Although constraints are applied to low level geometric entities (points, lines, etc.), the impact on a design model is usually imposed on higher level features. In terms of constraints processing, each feature is viewed as an independent problem and its constraints are solved independently. All constraints in a design model are therefore solved hierarchically bottom up.

Paper Details

Date Published: 22 March 1996
PDF: 8 pages
Proc. SPIE 2644, Fourth International Conference on Computer-Aided Design and Computer Graphics, (22 March 1996); doi: 10.1117/12.235510
Show Author Affiliations
J. J. Zhang, Brunel Univ. (United Kingdom)
A. E. Middleditch, Brunel Univ. (United Kingdom)
R. S. Latham, Brunel Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 2644:
Fourth International Conference on Computer-Aided Design and Computer Graphics
Shuzi Yang; Ji Zhou; Cheng-Gang Li, Editor(s)

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