Dahl, AlexBargteil, Adam W.2020-01-272020-01-272019-10-28Alex Dahl and Adam W. Bargteil. 2019. Global Momentum Preservation for Position-based Dynamics. In Motion, Interaction and Games (MIG ’19), October 28–30, 2019, Newcastle upon Tyne, United Kingdom. ACM, New York, NY, USA, 5 pages; https://dl.acm.org/doi/10.1145/3359566.3360078https://doi.org/10.1145/3359566.3360078http://hdl.handle.net/11603/17073Position-based dynamics has emerged as an exceedingly popular approach for animating soft body dynamics. Unfortunately, the basic approach suffers from artificial loss of angular momentum. We propose a simple approach to preserve global linear and angular momenta of bodies by directly tracking these quantities and adjusting velocities to ensure they are preserved. This approach entails negligible computational cost, requires less than 25 lines of code, and exactly preserves global linear and angular momenta.5 pagesen-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.position-based dynamicslinear and angular momentumcomputer animationphysics simulationText