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Article Navigation> JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY> 2019> 28(3): 585-597
Linhong Xu, Xiangnan Li, Jianhua Rao, Yuan Han, Zhipeng Li, Jichun Li. Computer Aided Design Technology for Convex Faceted Gem Cuts Based on the Half-Edge Data Structure[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2019, 28(3): 585-597. doi: 10.15918/j.jbit1004-0579.18053
Citation: Linhong Xu, Xiangnan Li, Jianhua Rao, Yuan Han, Zhipeng Li, Jichun Li. Computer Aided Design Technology for Convex Faceted Gem Cuts Based on the Half-Edge Data Structure[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2019, 28(3): 585-597.doi:10.15918/j.jbit1004-0579.18053
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Computer Aided Design Technology for Convex Faceted Gem Cuts Based on the Half-Edge Data Structure

doi:10.15918/j.jbit1004-0579.18053

  • School of Mechanical Engineering and Electronic Information, China University of Geosciences(Wuhan), Wuhan 430074, China

  • Received Date:2018-05-15
    Abstract
  • Aiming to increase the efficiency of gem design and manufacturing, a new method in computer-aided-design (CAD) of convex faceted gem cuts (CFGC) based on Half-edge data structure (HDS), including the algorithms for the implementation is presented in this work. By using object-oriented methods, geometrical elements of CFGC are classified and responding geometrical feature classes are established. Each class is implemented and embedded based on the gem process. Matrix arithmetic and analytical geometry are used to derive the affine transformation and the cutting algorithm. Based on the demand for a diversity of gem cuts, CAD functions both for free-style faceted cuts and parametric designs of typical cuts and visualization and human-computer interactions of the CAD system including two-dimensional and three-dimensional interactions have been realized which enhances the flexibility and universality of the CAD system. Furthermore, data in this CAD system can also be used directly by the gem CAM module, which will promote the gem CAD/CAM integration.
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