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Swing Expression on Text
Hey guys, I have a pretty simple question about swing expression.
So, I’m using this expression that I took from internet to make the swing animation on my text:
freq = 1.5; decay = 0.8; duration = 0.10; r = textIndex*thisComp.frameDuration*0.7; t = time - (inPoint + r); startVal = [100,100,100];endVal = [0,0,0]; if (t < duration){ linear(t,0,duration,startVal,endVal); }else{ amp = (endVal - startVal)/duration; w = freq*Math.PI*2.5; endVal + amp*(Math.sin((t-duration)*w)/Math.exp(decay*(t-duration))/w);}But I want to animation my letters in random. And I turn on the Randomize Order under Range Selector, it doesn’t do a thing, so how do I go about it?
Here’s a screen recording where you can see everything.
I also attached an AEP project file.
Hope you can give me any advice, I’m trying to learn more about expressions and any insight would be helpful.
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8 Replies
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Play around with this:
freq = 1.5;
decay = 0.8;
duration = 0.10;
maxDelay = 1;
seedRandom(textIndex,true);
r = random(maxDelay);
t = time - (inPoint + r);
startVal = [100,100,100];endVal = [0,0,0];
if (t < duration){
linear(t,0,duration,startVal,endVal);
}else{
amp = (endVal - startVal)/duration;
w = freq*Math.PI*2.5;
endVal + amp*(Math.sin((t-duration)*w)/Math.exp(decay*(t-duration))/w);
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Yes!!! Thank you so much, works like a charm! 🙂
May I ask you another question?
In the code that I posted, swing animation happens from first letter of the text, and I’m wondering how to go about making the animation to start from the last letter of the text?
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Try changing this line:
r = textIndex*thisComp.frameDuration*0.7;
to this:
r = (textTotal - textIndex)*thisComp.frameDuration*0.7;
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You’re an absolute legend!
Thank you. x
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Hey Dan, one last question..
I’ve been playing around with the seedRandom function and can’t get my head around on how to change the seed of the random. Meaning – how can I change the randomness of it?
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Replace this line:
seedRandom(textIndex,true);
with this:
seed = 17;
seedRandom(textIndex+seed,true);Then you just change the seed variable (or tie it to a slider, maybe) to change the randomness.
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Bless you!
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Thank you, Dan!
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