justite

Thank you very much for the clear example, it works perfectly.

I am having difficulty controlling the emission of particles from a surface textured with an image. I would like to suppress the emission of particles from points of the surface where the alpha is zero i.e. the transparent.

I have found several threads where texture based particle emission is discussed. Unfortunately none of these threads discuss how to suppress the emission of particles based on alpha.

Nevertheless, I've attached a small scene illustrating my attempt.

Thanks.