Bridge Edge and Triangulation Approach in Solid Modeling

  • Fujio Yamaguchi
  • Toshiya Tokieda
Conference paper


Boolean shape operations of a solid modeling system FREEDOM-II are described. The algorithm is based on the two techniques: bridge edge representation for a holed face and a face triangulation. It is very simple and efficient making use of the continuity of a shape. A 4 × 4 determinant processor is also suggested as a powerful tool of geometric computations. Applications of a 4 × 4 determinant processor are discussed in this paper.


Intersection Test Edge Deletion Containment Test Side Test Adjacent Triangle 
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    B.G. Baumgart, Geometric modeling for computer vision, Computer Science, Stanford Univ. (1974.)Google Scholar
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    I.C. Braid, R.C. Hillyard and I.A. Stroud, Stepwise construction of polyhedra in geometric modeling, Mathematical methods in computer graphics and design, Academic press (1980).Google Scholar
  3. [3]
    F. Yamaguchi and T. Tokieda, A unified algorithm for Boolean shape operations, to appear in IEEE Computer Graphics and Application, May (1984).Google Scholar

Copyright information

© Springer-Verlag Tokyo 1985

Authors and Affiliations

  • Fujio Yamaguchi
    • 1
  • Toshiya Tokieda
    • 1
  1. 1.Industrial Design DepartmentKyushu Institute of DesignMinami-ku, FukuokaJapan

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