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Blinking expression for random characters of a text
Hello there !
On a text layer Animator, I’d like to adapt Dan’s good old blinking effect expression :
minSeg = 1.5; //minimum interval (must be > 0)
maxSeg = 2.5; //maximum interval (must be > minSeg)
minFlicker = .5; //must be less than minSeg
maxFlicker = 1; // must be less than minSeg
segStartTime = 0; //initial conditions
segEndTime = 0;
i = 1;
while (time >= segEndTime){
i += 1;
seedRandom(i,true);
segStartTime = segEndTime;
segEndTime = segEndTime + random(minSeg,maxSeg);
}
flickerDur = random(minFlicker,maxFlicker);
seedRandom(1,false);
if (time > segEndTime – flickerDur){ random(0,100) }else{ 100 }
Which, applied to an expression selector with the opacity property, makes the entire text blinking.
I’d like to have each character blinking randomly.
The desired effect is that of a neon text whose letters start to blink a little from time to time, randomly. I haven’t been able to find on the forum although I’m pretty that question has been asked already.
Thank you all !
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5 Replies
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If you add an expression selector and delete the range selector, and apply this to expression selector’s Amount property, it might get you close to what you’re after:
minSeg = 1.5; //minimum interval (must be > 0)
maxSeg = 2.5; //maximum interval (must be > minSeg)
minFlicker = .5; //must be less than minSeg
maxFlicker = 1; // must be less than minSeg
segStartTime = 0; //initial conditions
segEndTime = 0;
i = textIndex*1103;
while (time >= segEndTime){
i += 1;
seedRandom(i,true);
segStartTime = segEndTime;
segEndTime = segEndTime + random(minSeg,maxSeg);
}
flickerDur = random(minFlicker,maxFlicker);
seedRandom(textIndex,false);
time > segEndTime - flickerDur ? random(0,100) : 100 -
Thank you so much Dan ! It’s perfect.
Just one more detail, is there a way to invert the result ?
The current result shows flashing letters from 0% opacity text, and I would like the text to be 100% visible and some letters to go out. Thanks !
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You could change the last line to:
time > segEndTime - flickerDur ? random(0,100) : 0
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Oh ! Thanks Dan 😅
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Thank you, Dan, for providing this solve!
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