animated vertex weight for particles emitter

Hi everyone!

I have a particle emitter, and I am using a vertex weight proximity modifier to have an animated vertex group, depending on the distance to a certain object. The vertex group is working fine.

Now I would like to use that vertex group as a density mask for the particles emitter. The particles are indeed emitted only from the vertex group, but then the object moves, the vertex group change, but the particles are still being emitted from the original vertex group.

I have use modifier stack option on in the emitters options… any idea how to fix this?

Thanks! :slight_smile:

thanks for the answer. I already saw that link, but dynamic paint do not change the situation. Does it mean that is not possible to have an animated vertex group driving particles emission?