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Delayed Opacity Rampdown
hi guys,
here this one:i have a slider controle from 0 to 100. from the point of time that slider reaches 100 the opacity of another layer ramps down from 100 to 0 over 1 sec.
i went a whole day through the ae expression forum and didn’t find anything that combines an if/else function with a rampdown.
very difficult, i’m still a newbe to expressions.
respects
sebastianSebastian Martinez
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2 Replies
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Triggers are not as simple as you would think they should be. Basically you need to construct a loop that goes back in time, frame by frame, until you find the time where the value went from below 100 to 100. Something like this should work:
slider = thisComp.layer("Other Layer").effect("Slider Control")("Slider");
above = false;
f = timeToFrames();
while (f >= 0){
t = f*thisComp.frameDuration;
if (above){
if (slider.valueAtTime(t) < 100){ f++; break; } }else if (slider.valueAtTime(t) >= 100){
above = true;
}
f--;
}
if (above){
t = time - f*thisComp.frameDuration;
linear(t,0,1,100,0);
}else{
value
}
Dan -
wow!
thank’s dan, you are a hero.
sebastianSebastian Martinez
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