Bullet Physics in Touch Designer as a Channel Operator. Requires Bullet Physics library (http://bulletphysics.org/) to compile. Tested with v2.87.
06/25/2018 v0.2 : update to Bullet 2.87 and TouchDesigner 099 04/08/2013 v0.1 : dynamic and kinematic bodies implemented, only box collision shape
Vincent Houzé https://vincenthouze.com