Re: Particular and 3d invg

the easiest way is to create the particle system exactly how you want it, except for wrapping around the layer. then duplicate that particle system and place the layer(s) that will be in the middle of the particle system between the two particle system layers.

then you'll set the far vanish of the top particle system to the near vanish value of the lower particle system. you could use an expression to link the near vanish value to the far vanish (just use the expression pickwhip to link one to the other), then you'd only need to manipulate one value to get the clipping to look correct. you shouldn't need to animate the near/far vanish values unless you zax layer is animating in z-space.

also, if you are linking the emitter to a 3d null with expressions, the next go around, it might be easier to create a new light (probably a point light) and name it 'emitter'. then set particular to emitter to 'light' and it will automatically use that light as the emitter without needing to use expressions. also, the light's brightness value (and if a spot light, the cone angle and direction) will effect the particles, so it gives some added control.

Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW