I have a scene where I have copied some spheres (with complex geometry) to a simple particle system where points are moving driven by a wind force.
I stumbled over a siggraph paper called “not bumping into things”.
http://www.red3d.com/cwr/nobump/nobump.html [red3d.com]
My goal is it that spheres that come close to each other change their travelling direction in order not to crash into the sphere that's in their way.
My idea after reading that article was zu replace each complex sphere with a dummy sphere and shoot rays in the travelling direction of each particle.
When intersecting with geometry one could calculate the distance to the obstacle and change the direction of the v vector.
Has anybody experience in this topic and can give me some tips to get started? let me guess, Ray Sop?
It would be cool to do this thing with nodes and expressions because I have no idea of python scripting

all the best,
Manuel

