Self-intersection removal based draft operation in solid modeling system

Dongming Yan*, Hui Zhang, Yushen Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Draft operation is a widely used in current CAD/CAD systems. In this paper we present a new draft algorithm for B-rep models, which overcomes the shortcoming in current used methods in which only small angles are allowed to keep the topological structure unchanged. In the proposed method, after generating an initial drafted body, we correct the faces of the initial drafted body and use a heuristic searching algorithm to obtain the final body. The proposed algorithm is more robust when compared to the previous methods. Finally examples are presented, showing that our method increases the capability of draft operation and can be used in a much large range of applications.

Original languageEnglish (US)
Pages (from-to)2074-2080
Number of pages7
JournalJisuanji Fuzhu Sheji Yu Tuxingxue Xuebao/Journal of Computer-Aided Design and Computer Graphics
Issue number12
StatePublished - Dec 2011


  • B-rep
  • Draft operation
  • Intersection

ASJC Scopus subject areas

  • Software
  • Computer Graphics and Computer-Aided Design


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