[Lord Scales]

audioLev = thisComp.layer(“Audio Amplitude”).effect(“Both Channels”)(“Slider”);
minAmp = 0; //minimum audio amplititude
maxAmp = 50; //maximum audio amplitude (I recommend you to put here the highest value of audioLev)
maxScale = 150; //minimum scale
minScale = 70; //maximum scale

value + linear (audioLev, minAmp, maxAmp, minScale, maxScale)

Lord Scales

[Lord Scales]

Try this for the position of the shadow layer:

ball = thisComp.layer (“Ball”).position;
[ball[0], value[1], value[2]]

Lord Scales

[Lord Scales]

Thanks, worked fine.

But why the “a” has to be out of the loop?

Lord Scales

[Lord Scales]

Strange, here it does not and I can’t find out why. Anyway, with the pre-composing I achieved my effect.

Thanks.

[Lord Scales]

Well, I found a solution: I just pre-composed my 3D clouds and turned on the “collapse transformation” switch and my obscuration worked fine.

However, if anyone of you has an expression solution, it’d be very very welcome.

[Lord Scales]

It has an alpha channel. If you look at “Info” (only with the clouds turned on) alpha channel value changes.

[Lord Scales]

You can also apply a fade out effect in the Scale property, to simulate the light diminishing according to the distance from the camera. The property will still be “keyframeable”.

camPos = thisComp.activeCamera.position;
lightSource = thisComp.layer(“Light Source Null“).position;
dist = length (camPos, lightSource)/650;

value/dist

Change the bold text as needed.

[Lord Scales]

In fact, AE is not really to do this kind of thingb (I guess), so that’s why I think there is nothing so especific to create this IK effect.

[Lord Scales]

Oh! I read the post again with more attention. With plug-ins? I think there is none able to do that, not in AE.

[Lord Scales]

It has an error…
…
x = linear (offset, 0, 100, 1, 6000)
y = value [0];

[x, y]

The variable y should be value[1], like this

x = linear (offset, 0, 100, 1, 6000)
y = value [1];

[x, y]