Select looped clip depending on size of comp

[Dan Ebberts]

Assuming that your four animations are the first four layers in a precomp and the precomp is a layer in a comp named “Main Comp”, if you apply this opacity expression to each clip and scale the precomp layer, it should do what you want.


s = comp("Main Comp").layer(thisComp.name).transform.scale[0];

if (index == 1){
min = -99999;
max = 10;
}else if (index == 2){
min = 10;
max = 30;
}else if (index == 3){
min = 30;
max = 70;
}else{
min = 70;
max = 99999;
}

if (min <= s && s < max) 100 else 0


Dan

[Roger Maus]

Hi Dan,

thanks for the quick response.

It does work for a fixed scale.
However when it comes to animating the scale, the precomp sticks to the very animation that the precomp started with. It does not switch.

e.g. the precomp starts of at 100% scale. As time passes by, the scale is going down to 10% – but the animation stays the one at 100%.
e.g. the precomp starts of at 10% scale. As time passes by, the scale is going up to 100% – but the animation stays the one at 10%.

The first value is all that matters. There is no live update.

What should I do?

[Dan Ebberts]

Just a hunch–try it this way instead:


L = comp("Main Comp").layer(thisComp.name);
s = L.transform.scale.valueAtTime(time + L.startTime)[0];
if (index == 1){
min = -99999;
max = 10;
}else if (index == 2){
min = 10;
max = 30;
}else if (index == 3){
min = 30;
max = 70;
}else{
min = 70;
max = 99999;
}
if (min <= s && s < max) 100 else 0


Dan

[Roger Maus]

That’s it! Works like a charm! Thank you so much!