Advanced geometric modeler with hybrid representation View Full Text


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Article Info

DATE

1996-01

AUTHORS

Changgui Yang, Yujian Chen, Jiaguang Sun

ABSTRACT

An advanced geometric modeler GEMS4.0 has been developed, in which feature representation is used at the highest level abstraction of a product model. Boundary representation is used at the bottom level, while CSG model is adopted at the median level. A BRep data structure capable of modeling non-manifold is adopted. NURBS representation is used for all curved surfaces. Quadric surfaces have dual representations consisting of their geometric data such as radius, center point, and center axis. Boundary representation of free form surfaces is easily built by sweeping and skinning method with NURBS geometry. Set operations on curved solids with boundary representation are performed by an evaluation process consisting of four steps. A file exchange facility is provided for the conversion between product data described by STEP and product information generated by GEMS4.0. More... »

PAGES

1-8

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf02943516

DOI

http://dx.doi.org/10.1007/bf02943516

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1035824783


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