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Don’t understand loopOut() and family
So, I’ve read the Animating a butterfly tutorial, and I read the AE help file on loopIn(), loopOut(), loopInDuration(), and loopOutDuration().
I’ve followed the loopOut instructions in the tutorial exactly, yet it does nothing. The video file still plays normally.
If I enter (time-inPoint)%2; as the expression instead, I can get it to repeat, but that’s harder to tweak than loopOut would presumably be if I could get it to work.
Also, in every example I’ve seen, the first parameter for all these functions is always “cycle.” What other possible values are there?
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3 Replies
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You need keyframes for those expressions to work, so apply time remapping, then the expression.
As for the other options, they’re in the 6.5 (and probably 7) help under “keyframe-looping methods”:
Pingpong repeats the specified segment, but alternates between repeating forward and backward in the segment.
Offset repeats the specified segment, but offsets each cycle by the difference in the value of the property at the start and end of the segment, multiplied by the number of times the segment has looped.
Continue does not repeat the specified segment, but continues to animate a property based on the velocity at the first or last keyframe. For example, if the last keyframe of a layer’s Scale property is 100%, the layer continues to scale from 100% to the Out point, instead of looping directly back to the Out point. This type does not accept a “keyframes” or “duration” argument.They’re all useful — try ’em out sometime. 🙂
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Looping
Basically you set keyframes for your animation, then add this loop expression to the keyframed property:
https://www.creativecow.net/show.php?page=/articles/ebberts_dan/layer_looping/index.html
For details on looping in AE see Dan Ebberts “Animating A Walk Cycle”, the comp “intro” (part of the downloadable Project files) where he goes into detail on the loop variations, including setting a keyframe 1 back from the last then looping from there, so you don’t get that little stutter from the last frame in the animation repeating itself.
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I figured out the problem I was having. I wasn’t deleting the last keyframe because it was out of sight and out of mind.
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