Physics Simulation Forum

Hi,
I am currently working at my own 2D physic engine. I've implemented GJK for the collision detection at the moment but how can I handle rotational movement?
I've read that there is a method which use the GJK-algorithm for it but I didn't found any papers about it.
Maybe there is another method which is easyer to implement or faster.

Hopefully that you can give me some helpful tips:
Thank you

GJK only deals with distance calculations between convex objects at a certain point in time, given their transform. There is no motion involved in GJK, or other interference detection / discrete collision detection.

If you meant you want swept collision detection (aka continuous collision detection), you'll need something else, like conservative advancement. This takes motion like translation and rotation into account.

See also:
http://graphics.ewha.ac.kr/catch/
http://graphics.ewha.ac.kr/fast/
http://www.continuousphysics.com/Bullet ... ection.pdf
or the papers at http://www.dtecta.com/interesting/
Continuous collision detection including rotation using GJK is implemented here and also in above Fast library and upcoming Catch (although using Swift++, instead of using GJK)
Thanks,
Erwin