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Animating a layer along an animated path

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Troy BeneschAnimating a layer along an animated path
by on Aug 8, 2011 at 6:24:37 pm

Stumped. I need to create a continuous flow of arrows along a path. This by itself was easy by copying the path and pasting it into the 'position' of the layer and I get a roving keyframe. Now the problem I'm facing is that the original path needs to animate over time while the arrows continue to follow the path during the animated motion. For example, say you want to animate a flow of continuous arrows that go from the bottom of the screen to the top. Then 3 seconds in, you want the path of the arrows to bend to make an 'S' shape. Then 3 seconds later, the path changes again to a completely different shape. All the while, the arrows are flowing along in a continuous manner. Thoughts?



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Dave LaRondeRe: Animating a layer along an animated path
by on Aug 8, 2011 at 7:59:40 pm

You might want to precomp the arrows animation and apply the Puppet Tool to the precomp. You can then make it LOOK like the motion path is animated.

Aharon Rabinowitz has a quickie tutorial on using the Puppet tool to do just that someplace here on the COW.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA

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Kevin CampRe: Animating a layer along an animated path
by on Aug 8, 2011 at 8:12:38 pm

can you make a really long motion path... larger than the screen. then parent the arrow(s) to a null and then keyframe the null to move along and keep a portion of the arrows and their path in frame. or you could use a 3d camera to do something similar if all the arrows are 3d too.

Kevin Camp
Senior Designer

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Michael SzalapskiRe: Animating a layer along an animated path
by on Aug 9, 2011 at 2:01:28 pm

I was hoping you could use an animated flow map with Foam, but apparently you can't do that. BOOOO!
Feature request? I think so!

In addition to Dave's suggestion to use the puppet tool, you could also try bezier warp or mesh warp.

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.

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