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Moving an object along a growing line

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Sarah Bott
Moving an object along a growing line
on Feb 7, 2018 at 3:59:56 pm

Hi everyone,

I'm wondering if you can help me simplify my project.

I've built an animation that has a blinking dot traveling from location to location on a map. As the dot travels, a path appears showing where the dot has been.

Right now I have the line animating separate from the dot, but each the customer asks to retime things it is very time consuming since I have to retime the line separate from the dot. I'm wondering if there is a way I can control the growing line along with the dot so I'm only adjusting one set of keyframes when I need to make edits.

Thanks for any help!


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Dave LaRonde
Re: Moving an object along a growing line
on Feb 7, 2018 at 6:20:29 pm
Last Edited By Dave LaRonde on Feb 7, 2018 at 6:23:17 pm

It's hard to say.

Please describe the procedures you currently use to animate the line and move the blinking dot.

I would tend to use an older technique where both layers are animated separately, and if it took me more than a minute to make the timing change, I would be greatly embarrassed and would consider going back to the metaphorical AE School.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Joseph W. Bourke
Re: Moving an object along a growing line
on Feb 7, 2018 at 7:15:23 pm

Sarah -

Would something like this help:

https://aescripts.com/speed-lines/

Joe Bourke
Owner/Creative Director
Bourke Media
http://www.bourkemedia.com


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Walter Soyka
Re: Moving an object along a growing line
on Feb 7, 2018 at 7:32:11 pm

If you're using the latest version of After Effects, you can make use of the new pointOnPath() expression to link the position of one layer to a path on another.

Here's an example for your case that you could modify:
12140_dotonpath.aep.zip

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive [twitter]   |   RenderBreak [blog]   |   Profile [LinkedIn]


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