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help with offset exp
Hey there,
Im kind of newbie at AE expression. I need help with this.
I am making some animated mattes with a lot of vertical white bars.Ive already made them go up with the same animation of my layer number 1, also with an offset on X axis.
I used this expression:
x = thisComp.layer(index -1).transform.position[0];
y = thisComp.layer(index -1).transform.position[1];[x+12,y]
Now here is the thing,
I cant get to offset each bar start frame so I can get a “wavy” effect, like in an old sound EQ or volume digital meter)Help me plz!
Thanks,
Rod -
2 Replies
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you need to use valueAtTime()
For instance:-
thisComp.layer("matte_layer").position.valueAtTime(time - 3);will give you matte_layer’s position 3 seconds ago.
thisComp.layer("matte_layer").position.valueAtTime(time - (3*thisComp.frameDuration));
will give you matte_layer’s position 3 frames ago.thisComp.layer("matte_layer").position.valueAtTime(time + Math.sin(time*5)/2);will follow matte_layer’s position, but oscillating back and forth along the path.
-Ben.
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Hey Ben , I´ll try it as soon as I get to the office.
I´ll let u know the result. Thanks!Rod
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