Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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A New Offset Algorithm for Closed 2D Lines with Islands

섬을 가진 2차원 직선 폐곡선에 대한 새로운 오프셋 알고리듬

  • 김현철 (한국과학기술원 대학원 기계공학과) ;
  • 이성근 (한국과학기술원 대학원 기계공학과) ;
  • 양민양 (한국과학기술원 기계공학과)
  • Published : 2006.02.01
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Abstract

In this paper, a new offset algorithm for closed 2D lines with islands is introduced and the result is illustrated. The main point of the proposed algorithm is that every point is set to be an offset by using bisectors, and then invalid offset lines, which are not to be participated in offsets, are detected in advance and handled with an invalid offset edge handling algorithm. As a result, raw offset lines without local invalid loops are generated. The proposed offset method is proved to be robust and simple, moreover, has a near O(n) time complexity, where n denotes the number of input lines. In addition, the proposed algorithm has been implemented and tested with 2D lines of various shapes.

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References

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