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expression to oscillate Y rotation
I have a 3d null object that is simply keyframed on the Y rotation every 15 seconds to go from 0 to 15 then back to 0 on the next keyframe. So I’m wondering what’s the easiest way to make an expression for something like this? It’s just a simple ‘back and forth’ setting, but I’m not sure how to do it.
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2 Replies
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so you have your 3 keyframes, and you just want to loop that animation…?
an easy way is to keyframe it like you have, then loop the keyframes with a simple loopOut() expression…
enable expressions for that property and enter this expression:
loopOut()
and it will loop your keyframed animation.
you could use just two keyframes (values 0 & 15), then modify the expression:
loopOut(‘pingpong’,2)
‘pingpong’ is the style of loop or loop behavior and 2 is the keyframe index of the last keyframe (if you had 3 keyframes, the the index would be 3)
for other types of loop expressions and ‘types’ of loops that can be defined see this page:
https://help.adobe.com/en_US/AfterEffects/9.0/WS3878526689cb91655866c1103906c6dea-79f8a.htmlKevin Camp
Senior Designer
KCPQ, KMYQ & KRCW -
Thanks Kevin! I’m trying to apply this same theory to this project. Take a look at 1:52-1:58 of this video at the bottom of the page: https://about.dtnpf.com/ag/products/producer/grains/
Can i use this expression to set the first panel to pop out, then the rest to follow?
What expression can i use to start the first panel pop out then the rest follow? It’s just using the Z axis to come forward.
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