Check out the tutorial for Growing Plants on Particle Collision in Maya from FermiCG. He shows you how to create objects as the result of a particle collision, in this case, growing plant instances when rain drops hit the ground.
Growing (pruning) plants on particle collission in Maya
December 24, 2011 By Leave a Comment
From FremiCG : Hi friends this is a quick tutorial.I was searching for some dynamic effect such as animation of instanced objects according to the particle collision/lifespan.I have found a way to accomplish those effects very quickly with very basic expressions (I don’t even know the advanced expressions.If some one have good tutorials about particle expressions please share it).