Robust treatment of simultaneous collisions

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. CR Categories: I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism--Animation

• Type: Journal
• Year: 2008
• Where: TOG
• Authors: David Harmon, Etienne Vouga, Rasmus Tamstorf, Eitan Grinspun
• Keywords: Challenging Problem, Complex Collisions, Fail-safe, TOG 2008