Layer Space Transforms and Size

[Bwsab]

Hi,

I have a 2D layer following a 3D layer using toComp in an expression, and its working really well. However, when the 3D layer gets closer to the camera, it appears as if its bigger, and I'd like the 2D layer's actual size to match the 3D layer's apparant size. Is it posible to do this in an expression? Thanks,

--Saib

[Dan Ebberts · Accepted solution]

There is more than one possible answer to your question, depending on what you're doing. For example, if your 3D layer always faces the camera, a scale expression like this should work:

L = thisComp.layer("my3DLayer");
p1 = L.toComp([0,0,0]);
p2 = L.toComp([L.width,0,0]);
d = length(p1,p2);
value*d/L.width

Dan

[Bwsab]

That worked wonderfully! Thank you so much!