ok so i have this one particle system made of leaves(with rotation) interacting with other - balls - and carrying the leaves up as and when they hit … but somehow i want to stop the rotation of those leaves that have hit and also not intersect in balls particles….

Hi,

I think that rotation doesn't stop because of the ‘point’ function in the rotation-angle expression. Try to use ‘poppoint’ instead of ‘point’.

john_z … awesome .. you are right that works .. though it kindda snaps, since it stops abruptly … guess will have to work around it .. BUT yes thanks it works!! was waiting for a lead since last few hours …. thanks !!!