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Geometric model simplification for distributed CAD
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DOI：10.1016/j.cad.2003.09.007.png)
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Visualization of CAD models in distributed design environment is an essential feature to support collaborative design. To efficiently transmit and render CAD models geometric simplification can be applied to CAD models. However, it is difficult to use available general geometric simplification algorithms because these algorithms are not designed to handle mechanical CAD parts. Applying general simplification on a CAD model would result in distortion of design features and make them unrecognizable to viewers. In this paper, a novel approach is proposed to exploit trimming information in CAD models to simplify their geometry. Visibility culling is integrated into this approach to facilitate selective refinements. The work introduced here aims to support visualization of multiple CAD models in a distributed CAD environment. Implementation details are included and case studies are demonstrated. (C) 2003 Elsevier Ltd. All rights reserved.
Keyword:
trimming curve
geometric simplification
selective refinement
visibility culling
geometric compression
distributed CAD
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