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Lerp effect in After Effects?
Hi,
Can anyone tell me how to make one item follow another item with a specified amount of delay/drag in catching it up? I work in Unity (game developing environment) where this is quite easy to set up, but I can’t figure it out in AE.
To be specific, say I have two nulls, and I move one of them and then stop it, I want the second null to move towards the new position of the first null, but with a certain amount of drag – which determines how quickly the second null will accelerate to maximum speed, but also how it slows down as it reaches the target object.
I’m sure there must be a way in AE with expressions to do this, but I’m a total rookie.
Anyone have any ideas?
Thanks! -
2 Replies
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In expressions you can specify time relative to what you are evaluating.
You are looking for the “valueAtTime” method. Here’s an example:
https://help.adobe.com/en_US/aftereffects/cs/using/WS3878526689cb91655866c1103906c6dea-7a15a.html
valueAtTime is discussed in the property attributes reference:
https://help.adobe.com/en_US/aftereffects/cs/using/WS3878526689cb91655866c1103906c6dea-79f8a.html
Also you may want to use time conversions for some items:
https://help.adobe.com/en_US/aftereffects/cs/using/WS3878526689cb91655866c1103906c6dea-7a09a.html
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Hi – I think this tutorial by the amazing SebBap is probably what you’re looking for:
https://greyscalegorilla.com/blog/2011/03/de-sync-expressions-tutorial-by-sebastian/
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