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Give me the way to reverse Expresstion
freq = 1;
decay = 8;
duration = 0.25;
retard = textIndex*thisComp.frameDuration*1;
t = time – (inPoint + retard);
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;
endVal + amp*(Math.sin((t-duration)*w)/Math.exp(decay*(t-duration))/w);
}delay = .05;
myDelay = delay*textIndex;
t = (time – inPoint) + myDelay;
if (t >= 0){
freq =10;
amplitude = 100;
decay = 2;
s = amplitude*Math.cos(freq*t*0.1*Math.PI)/Math.exp(decay*t);
[s,s]
}else{
value
}
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1 Reply
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That’s a strange expression. It appears that the first chunk, down to the
}delay = 0.05;
line, doesn’t actually do anything. Getting the last part to run in reverse would be tricky, because it doesn’t really have an end time (it’s an exponentially decaying cosine wave), so it would be hard to pick a start time for the reverse action.
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