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SMA
1999
ACM

Resolving non-uniqueness in design feature histories

10 years 5 months ago
Resolving non-uniqueness in design feature histories
Nearly all major commercial computer-aided design systems have adopted a feature-based design approach to solid modeling. Models are created via a sequence of operations which apply design features to incremental versions of a design model. Even surfacing, free-form surface shaping, and deformation operations are internally represented in modeling systems as features in a “history tree” that generates the final design. Much in the same manner that Constructive Solid Geometry (CSG) trees for an individual model can be non-unique, these design feature histories for solid models might be ordered in a number of ways and still result in the same final geometry and topology. We formulate this problem symbolically and present geometric reasoning techniques to generate a canonical form for certain classes of design feature histories. We define this representation as a Model Dependency Graph (MDG) and show how it can be used as a basis for developing techniques for managing databases of...
Vincent A. Cicirello, William C. Regli
Added 03 Aug 2010
Updated 03 Aug 2010
Type Conference
Year 1999
Where SMA
Authors Vincent A. Cicirello, William C. Regli
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