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adding flickering fade in characters to an existing expression
Hi all!
I’m trying to figure out how to add a flicker option (while fading in) to an existing expression. Basically it’s a triggered- by -marker expression selector. It’s a mess, but it works for now:
delay = .05;
if(effect("random")("Checkbox")==true){
seedRandom(textIndex,true);
myDelay = random(delay)*30;
}
else myDelay = delay*textIndex;m = marker
n = 0;
if (m.numKeys > 0){
n = m.nearestKey(time).index;
if (m.key("in").time > time) n--;
}
if (n > 0){
t = time - (m.key("in").time + myDelay);
startVal = 100;
endVal = 0;if(effect("random")("Checkbox")==true){
dur = (effect("dur")("Slider"))*15;}
else dur = effect("dur")("Slider");dur =effect("dur")("Slider")
if (t < dur){
go = ease(t,0,dur,startVal,endVal)
}else{
amp = ((endVal - startVal)/dur)*.55;freq = 1.5;
decay = 15;
w = freq*Math.PI*2;
go = endVal + amp*Math.sin((t-dur)*w)/Math.exp(decay*(t-dur))/w;
}
[go,go]
}else
valueSo I tried unsuccessful ways to add variations of this one (from this post) adapted to my needs,
maxDelay = .75;
fadeTime = .5seedRandom(textIndex,true);
delay = random(maxDelay);
t = time-inPoint;
seedRandom(textIndex,false);
if (t < delay)
100
else
random(linear(t,delay,delay+fadeTime,100,0))
inside my expression, (adding first a checkbox called flicker to the layer), with no success (and if it seemed to work, it was working awfully bad):Any ideas? I feel like was close, but never got the right way to make it work u_u
Thanks! -
3 Replies
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Ook, I figured it out at last!
it’s suuuper messy and it has a lot of redundant code, but it works! (feel free to post a better structured code)
For this version, you will need 2 checkboxes, one called “random” and other called “flicker”, and 2 sliders: “delay” and “dur”
and add a “in” layer marker whenever you want the type to start the stuff:
delay =framesToTime(effect("delay")("Slider"))
if(effect("random")("Checkbox")==true){
seedRandom(textIndex,true);
myDelay = random(delay/.15);
}else {
myDelay = delay*textIndex;
}
m = marker
n = 0;
if (m.numKeys > 0){
n = m.nearestKey(time).index;
if (m.key("in").time > time) n--;
}
if (n > 0){
t = time - (m.key("in").time + myDelay);
startVal = 100;
endVal = 0;
if(effect("flicker")("Checkbox")==true){
if(effect("random")("Checkbox")==true){
seedRandom(textIndex,true);
myDelay = random(delay/.15);
seedRandom(textIndex,false);
dur=framesToTime(effect("dur")("Slider"));
if(t -
Hi!
I tried to adapt a part of that code to make it flickering out instead of in, but I can`t make it stop, it gets stuck on an endless flickering,
do you know how it would be to make it flicker but just during the “dur” number of frames and then zero transparency?
delay =framesToTime(effect("delay")("Slider"))
myDelay = delay*textIndex;
m = marker
n = 0;
if (m.numKeys > 0){
n = m.nearestKey(time).index;
if (m.key("out").time > time) n--;
}
if (n > 0){
t = time - (m.key("out").time + myDelay);
startVal = 0;
endVal = 100;
seedRandom(textIndex,true);
myDelay = random(delay/.15);
seedRandom(textIndex,false);
dur=framesToTime(effect("dur")("Slider"));
if(t<0){
value
}else{
random(linear(t,myDelay,myDelay+dur,startVal,endVal))}
}else
{
value
} -
mmm, once again, I’m sure there are a few more elegant solutions, but I’d add a specific time range control for that randomness,
this works for me:
delay =framesToTime(effect("delay")("Slider"))
myDelay = delay*textIndex;
m = marker
n = 0;
if (m.numKeys > 0){
n = m.nearestKey(time).index;
if (m.key("out").time > time) n--;
}
if (n > 0){
t = time - (m.key("out").time);
startVal = 0;
endVal = 100;seedRandom(textIndex,true);
myDelay = random(delay/.15);
seedRandom(textIndex,false);
dur=framesToTime(effect("dur")("Slider"));///////
startFlicker = m.key("out").time;
endFlicker =startFlicker+dur+myDelay;
///////////////////////if (time >framesToTime(startFlicker) && time < endFlicker){
random(linear(t,myDelay,myDelay+dur,startVal,endVal))
}else {
ease(time,startFlicker,endFlicker+(dur/2.2),value,endVal)// you can change this for just "endVal" to have an abrupt end but this way it has a mini sort-of fade out of a couple frames
}}
else
{
value
}
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