Robust treatment of simultaneous collisions

  • Authors:
  • David Harmon;Etienne Vouga;Rasmus Tamstorf;Eitan Grinspun

  • Affiliations:
  • Columbia University;Columbia University;Walt Disney Animation Studios;Columbia University

  • Venue:
  • ACM SIGGRAPH 2008 papers
  • Year:
  • 2008

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Abstract

Robust treatment of complex collisions is a challenging problem in cloth simulation. Some state of the art methods resolve collisions iteratively, invoking a fail-safe when a bound on iteration count is exceeded. The best-known fail-safe rigidifies the contact region, causing simulation artifacts. We present a fail-safe that cancels impact but not sliding motion, considerably reducing artificial dissipation. We equip the proposed fail-safe with an approximation of Coulomb friction, allowing finer control of sliding dissipation.