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Change specific keyfame’s value by expression
Hello folks. Is there any way to make expression control like this image? I know the expression can change the value if I write on Slider, but I want to find another way to make it work on another layer.
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2 Replies
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Something like this might work:
s = effect("Slider Control")("Slider");
c = effect("Checkbox Control")("Checkbox");
val = s.value;if (s.numKeys > 4){
if (c.value){
if (time > s.key(3).time && time < s.key(4).time){
val = linear(time,s.key(3).time,s.key(4).time,s.key(3).value,100);
}else if (time > s.key(4).time && time < s.key(5).time){
val = linear(time,s.key(4).time,s.key(5).time,100,s.key(5).value);
}
}
}
val
Dan
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Thank you very much Dan, it works like a charm.
BTW. With this expression the Opacity Property’s value will not get 100 if i don’t add the key(5), then i found another way by precomp layer and use simple If function.
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