Invisible when layer1, Layer2 facing away from the camera in another computer

Hello

I have a main comp with many photo compositions. A cam steals a model of photo to another and so on. Each photo model is made of several

pre - comps.one of this pre comps contains the image frame. (3d layer)

My goal now is this = > I that the framework in the precomp changes if the comp (3dlayer) photo is opposite the cam in the main comp it opacity from 100 to 0.

it is similar to the expression of Dan http://www.Motionscript.com/design-guide/invisible-facing-away.htm but with pre comps.

any ideas?

see you soon

Like this:

If (comp("Main_Comp").layer (thisComp.name) .toCompVec ([0, 0, 1]) [2] > 0) value 0 otherwise

Dan

Tags: After Effects

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