Hello,

I have created a particle system and have copy stamped a primitive sphere onto each of its points. I have chosen to allow point attributes to affect the spheres. This allows me to get varying opacity on each sphere as I have used a rand($ID) expression in the lookup parameter of the alpha ramp tab of the color POP in my particle network.

I was wondering if someone might be able to help me with an expression that could not only create a random opacity for each point but also fade that random value down to zero over the course of the particles life…

It thought of using a rand in conjunction with a fit but I cant get anything to work very well. any suggestions?

Thanks very much in advance,

Adam