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Efficient Collision Detection for General CSG Objects

  • Michael Zeiller
  • Werner Purgathofer
  • Michael Gervautz
Conference paper
Part of the Eurographics book series (EUROGRAPH)

Abstract

A complete method to detect collisions among objects modeled with constructive solid geometry within a computer animation system is introduced. In contrast to existing methods the CSG objects may be constructed from arbitrary kinds of primitives, e.g., polyhedral primitives or primitives with curved surfaces. Collision detection is performed in three stages. Bounding volumes and spatial subdivision are used to reduce the complexity of the CSG objects for detailed analysis. In those regions that are partially covered by both objects an exact collision test for those small parts of the CSG objects that are inside the region is performed. To be able to deal with general CSG objects an adaptive collision detection algorithm for CSG objects containing curved primitives is presented.

Keywords

Collision Detection Boundary Evaluation Computer Animation Collision Point Polyhedral Approximation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag/Wien 1995

Authors and Affiliations

  • Michael Zeiller
    • 1
  • Werner Purgathofer
    • 1
  • Michael Gervautz
    • 1
  1. 1.Institute of Computer GraphicsTechnical University of ViennaViennaAustria

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