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Help!, with expression (layers)?
Hi All.
Thanks in advance for any help or suggestions.
What I want to do is randomly have different layers show up (opacity) at different times over time (kinda flickering) and then all show up at the end. There are a bunch of of these layers so I was thinking (DANGER! Will Robinson) that the easiest way might be to have an expression that would randomly access these layers for a short durration untill the end where they would reveal and then stay 100% (still randomly).
I hope this makes some sense.
Thanks, Jim
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1 Reply
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Here is an expression for opacity that will do the flickering and the fading. Don’t give me any credit though, I copied and pasted some code used in an example on Dan Ebbert’s motionscript.com and added about 3 lines to it. 🙂
//–Begin Expression
segMin = .5; //minimum segment duration
segMax = 1.5; //maximum segment duration
flickerDurMin = .5;
flickerDurMax = .8;
timeToFadeIn = thisComp.duration – 1;
//–
if(time < timeToFadeIn) { end = 0; j = 0; while ( time >= end){
j += 1;
seedRandom(j,true);
start = end;
end += random(segMin,segMax);
}
flickerDur = random(flickerDurMin,flickerDurMax);
if (time > end – flickerDur){
seedRandom(1,false);
random(100);
}else{
100
}}else{//Don’t use Dan’s code if time >= timeToFadeIn
ease(time, timeToFadeIn, thisComp.duration, 0, 100)
}//–End Expression
Colin
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