Particles die behond edge (inverse depthfade?)

Vita_Cordes
Sun, 07 Jun 2015 20:44:55 +0000
FX

Hey all,

I’m creating a particle systems for bugs running rampant in differend directions trough the use of of a vector field.
I want to be able to place this system anywhere on my level which has very flat floors, but many edges.

So my issue here is: I want the particles to either die or dissapear when they go over an edge (they can go a little over it). I’ve seen some demo before where particles were spawned in a cone, and only those near the floor were visible.
However, I’m unable to find whatever I saw there. Does anyone know of it?

I was thinking myself of using a depthfade node in the material editor, but then inversed. So the particles are only visible near an object. If anyone has differend solutions, please tell

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