Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/5077
Title: | Efficiency of boundary evaluation for a cellular model |
Author: | Bidarra, R. Madeira, J. Neels, W.J. Bronsvoort, W.F. |
Keywords: | Boundary representation Cellular model Complexity analysis Efficiency Feature modeling Boundary evaluation Computer aided design Performance measurements |
Issue Date: | Oct-2005 |
Publisher: | Elsevier |
Abstract: | Feature modeling systems usually employ a boundary representation (b-rep) to store the shape information on a product. It has, however, been shown that a b-rep has a number of shortcomings, and that a cellular representation can be a valuable alternative. A cellular model stores additional shape information on features, including the feature faces that are not on the boundary of the product. Such information can be profitably used for several purposes. A major operation in every feature modeling system is boundary evaluation, which computes the geometric model of a product, i.e. either the b-rep or the cellular model, from the features that have been specified by the user. Since boundary evaluation has to be executed each time a feature is added, removed or modified, its efficiency is of paramount importance. In this paper, boundary evaluation for a cellular model is described in some detail. Its efficiency is compared to the efficiency of boundary evaluation for a b-rep, on the basis of both complexity analysis and performance measurements for the two types of evaluation. It turns out that boundary evaluation for a cellular model is, in fact, more efficient than for a b-rep, which makes cellular models even more attractive as an alternative to b-reps. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/5077 |
ISSN: | 0010-4485 |
Appears in Collections: | DETI - Artigos |
Files in This Item:
File | Description | Size | Format | |
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BidarraEtAl2005.pdf | Versão final da Elsevier Science Direct - Acesso restrito | 614.56 kB | Adobe PDF |
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