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Trigger expression only when there’s no keyframe
Hi everyone. I’m trying to set up a layer so that a flicker occurs, but I also need to precisely animate the opacity in certain points. Up until now the best way to do so seems to be setting a checkbox controller and use an if/else statement to check for its value. Though this works, it requires me to add the extra controller and keyframe it. I tried this expression:
if (!value) {wiggle(10,50);}
else {value;}Now, while it seems to work perfectly fine on a test comp (a red solid with its opacity animated), it does not work in my bigger comp. It simply does nothing at all.
I was wondering if the code above is legit and what would be the easiest way to achieve this effect.
Thank you
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Gabriele Cannizzaro
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2 Replies
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What your expression does is apply a wiggle whenever the keyframed value is exactly zero, which may not generally be what you want. Unless the expression has some way to recognize from the keyframed value when you want it to be active, the checkbox may be your best bet.
Dan
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Thank you!
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Gabriele Cannizzaro
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