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Auto-orient without Auto-Orient Along Path
Hi there! I have noticed Auto-Orient Along Path does not changes the rotation value of the layer, and sometimes I miss it. So, to fix this, i created this expression for the rotation of a 2D Layer:
var t = position.valueAtTime (time + thisComp.frameDuration); vec = position – t;
radiansToDegrees (Math.atan2 (vec[1], vec[0]))
The problem is that it only works when the layer is moving. I used a lot of if/else trying to correct but I just wasted time. So I need some help to solve this problem.
Thanks!
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3 Replies
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If you want to calculate the world rotation of a 2D auto oriented layer (“Layer 1”), you can do it this way:
L = this_comp.layer(“Layer 1”);
V = L.toWorldVec([1,0]);
radiansToDegrees(Math.atan2(V[1],V[0]));Dan
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That’s perfect!
Just one thing:
toWorldVec([1, 0])
means that only X axis will be converted? -
Yes. Converting the x axis gives you everything you need to calculate the rotation.
Dan
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