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Disable a Composition Programmatically
Is there a way to disable a Composition Programmatically?
It can be done with layers, i.e. myLayer.enabled=false .
But doesnt seem we can do the same thing on a comp, i.e. myComp.enabled=false.
They both have the eyeball, you’d think this world work on both.
Same goes with setting opacity on the comp, i.e. theComp.opacity=0; , that doesnt work either.
Am I just not getting the syntax correct?
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3 Replies
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What eyeball are you talking about for comps? Comps as layers have layer eyeballs, but comps in the project bin don’t have eyeballs. If you’re talking about a comp layer, then to access it’s eyeball, you have to reference it as a layer.
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Dan is the best!
It’s the “Comps as layers have layer eyeballs” I was referring to. What I didnt realize was programmatically I can call a comp as a layer and access the properties that way.
Something like this works.
var theComp = app.project.item(i)
for(var k=1; k<=theComp.numLayers; k++) {
var theLayer = theComp.layer(k)
if(theLayer.name==”myCompAsALayer”) {
theLayer.enabled=false;
}
}
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You can also use expression controllers for this. Precomp the comp that you want to turn on and off. Then create an empty layer and apply a checkbox controller. Write an if/else expression on the precomp for opacity. If checkbox is checked, opacity 100, if unchecked – opacity 0.
Something like this…
if(thisComp.layer(“Adjustment Layer 1”).effect(“Checkbox Control”)(“Checkbox”)==0)0 else 100
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