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Trying to make one shape rotate with a 5 seconds delay behind another shape
Hey all, I am new to ae expressions and by no mean a math genius. I thought this expression will drive the lower layer to rotate 5 seconds behind the top layer but they are rotating in sync. the expression seems valid with no error. What did I miss here?
Top layer (index 2):
var initialRotation = 0;
var rotationIncrement = 10;
var currentRotation = initialRotation + rotationIncrement + Math.floor(time);
[currentRotation]
Bottom layer (index 3) :
var R = thisComp.layer(index-1).transform.rotation;
var P = R.valueAtTime(time-5);
[P]
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3 Replies
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If you look at the rotation values in the graph editor, you’ll see that the lower layer is actually 5 seconds behind the upper layer.
Just a couple of notes on your expressions. You don’t need the final variable, and you don’t need to put the result in brackets (because rotation is a one-dimensional property), so this would do for the top expression:
initialRotation = 0;
rotationIncrement = 10;
initialRotation + rotationIncrement + Math.floor(time)and this for lower one:
R = thisComp.layer(index-1).transform.rotation;
R.valueAtTime(time-5);Also, I’m wondering if the upper rotation is actually what you meant to do or whether you needed a multiplication, like this:
initialRotation = 0;
rotationIncrement = 10;
initialRotation + rotationIncrement * Math.floor(time) -
Thank you !!! The top one works like I intended – its a very elegant solution! 😀
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Thank you for this solve, Dan!
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