Real-Time Physics Simulation Forum 2015-03-25T10:22:04+00:00 https://pybullet.org/Bullet/phpBB3/app.php/feed/topic/10460 2015-03-25T10:22:04+00:00 2015-03-25T10:22:04+00:00 https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=35176#p35176 <![CDATA[Solve constraints globally in Position Based Dynamics]]>
I was wondering if it possible in PBD to solve a set of distance constraints (like simple springs) between particles exactly, in a global manner, by assembling and solving a system of linear equations? I know that in PBD the idea is to solve the constraints iteratively, but I have a long chain-like structure consisting of 100+ particles and it currently noticeably oscillates. Previously, I have been using a block Projected Gauss Seidel where I solved the chain distance constraints globally (tri-diagonal JWJT matrix => quick linear time solve) and other constraints iteratively. It produced good results so I was wondering if it is possible in the case of PBD. Here is a link for the velocity-level method (http://allenchou.net/2013/12/game-physi ... l-impulse/)

Thanks

Statistics: Posted by korzen303 — Wed Mar 25, 2015 10:22 am

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