You can define wiggle at specific points in the timeline?

Hi people,

I made this cool tutorial on the creation of light streaks:

In it, he used the wiggle expression to create random movements.  I'm trying to get a trail to follow a specific path and then move within a limited and then travel on a specific path and move within the confines of another deadline.  Imagine the light having to travel through a small tube that opens in an area where there is room to move and then through a tube again to the next area, etc..

Someone can give me advice on how to achieve this kind of effect or do not hesitate to tell me the name of what I'm trying to achieve so that I can google it.  Thank you!


Thanks to you two.  I'll look at both of these responses.

Is it possible to have the AE to consider the field of composition, so that if we use the example above, the boxes and tubes, then some areas of the composition have boxes and some regions have tubes and then let the light streak move randomly within the composition and react accordingly depending on where it is in the composition?  In other words, the conditional we are talking about can be based position and not timeline based?

Tags: After Effects

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