Help please

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hollow man
Posts: 4
Joined: March 8th, 2005, 6:13 am
Location: Switzerland

Hi,

I want to link the position property of a camera with the opacity of 3d layer.

I want that the opacity of my 3d layer decreases when my camera moves away from the layer!

What's the expression for this effect?

Thanks a lot
Paul Tuersley
Posts: 704
Joined: June 5th, 2004, 7:59 am
Location: London, UK

Try this expression on the 3D layer's opacity property:
distance = length(position, thisComp.activeCamera.position);
linear(distance, 1000, 5000, 100, 0);


length() calculates the distance between the 3D layer and the camera, then linear() converts the result. In this example the layer will be 100% opacity when the distance is 1000, fading out completely when the distance reaches 5000.

Paul T
hollow man
Posts: 4
Joined: March 8th, 2005, 6:13 am
Location: Switzerland

Thanks a lot!

It works perfectly
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