[Dan Ebberts]

Do you want a layer to follow a pin on another layer? If so, you should be able to do it like this:

L = thisComp.layer(“puppet layer”);
L.toWorld(L.effect(“Puppet”).arap.mesh(“Mesh 1”).deform(“Puppet Pin 1”).position)

Dan

[Dan Ebberts]

No global variables, but you can use Slider Controls to control the values. You could just apply a Slider Control to a null layer, pick whip from your expression to the slider to get the syntax right, and then control all your values with the slider.

Dan

[Dan Ebberts]

For multi-dimensional properties like position or scale, value is a JavaScript array representing the current keyframed value. value[0] is the x component and value[1] is the y component. For a one-dimensional property like opacity, value is a scalar and you don’t need to use the brackets [].

Dan

[Dan Ebberts]

I think you’d just want to append this to the last line:

*value[0]/100

Dan

[Dan Ebberts]

If you want to add a smooth, random multiplier, you could use wiggle() to calculate the multiplier like this:

freq = 5;
mult = wiggle(freq,1)-value;

or, if you wanted it to be periodic you could do something like this:

freq = 5;
mult = Math.sin(freq*time*Math.PI*2);

Then you would just multiply your Sound Keys value by “mult” and adjust “freq” to the frequency you want.

Dan

[Dan Ebberts]

Here’s an ease version:

startScale = 50; // percent of Scale at start
endScale = 100; // percent of Scale at end
scaleUpTime = 3; // time to scale up from inPoint in seconds

s = ease(time,inPoint,inPoint+scaleUpTime,startScale,endScale);
[s,s]

Dan

[Dan Ebberts]

I think you’ll have better luck if you tell us what you’re trying to do.

Dan

[Dan Ebberts]

For an expression applied to a range Selector’s Start or End property, I think this will give you the index of the Animator:

propertyGroup(3).propertyIndex

Dan

[Dan Ebberts]

Yes it is.

Dan

[Dan Ebberts]

Do you want to modulate the light using the audio amplitude envelope? If so, it should be pretty easy – convert the audio to keyframes and use an expression like this on the light’s intensity:

mult = 5;
mult*thisComp.layer(“Audio Amplitude”).effect(“Both Channels”)(“Slider”)

The exact expression will depend on what you’re trying to do.

Dan