Position over time relative to width of comp

[John Cuevas]

One method would be to use an ease expression added to position.

myTime = thisComp.duration;
myWidth = thisComp.width;
y =300;
ease(time,0,myTime,[0,y],[myWidth,y])

The expression says that from time 0 to myTime(comp duration) move from 0 to the myWidth(comp Width). You might want to adjust the start postion to a negative number to start your move offscreen. You could change the myWidth to myWidth =thisComp.width+thisLayer.width; that should move the layer offscreen at the finish also.

here’s the project in action:5899_moveexpressionovertime.aep.zip

Johnny Cuevas, Editor
Thinkck.com

“I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work.”
—THOMAS EDISON on inventing the light bulb.

[John Cuevas]

Made a couple of adjustments so the layer starts and ends offscreen(as long as the anchor point is in the center of the layer)

myTime = thisComp.duration;

myWidth = thisComp.width+(thisLayer.width/2);
y =300;
ease(time,0,myTime,[(0-(thisLayer.width/2)),y],[myWidth,y])

Here’s an updated project with both methods, one linear and one with easy ease.
5900_moveexpressionovertimev2.aep.zip

Johnny Cuevas, Editor
Thinkck.com

“I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work.”
—THOMAS EDISON on inventing the light bulb.

[David Lennox]

Thanks John that is just the ticket! 🙂

[David Lennox]

Picking up an existing project with about 50 comps needing this and I just wondered if there was an easy way to do it with expressions. I know if doesnt save me that much time but still I wondered 🙂

[Walter Soyka]

[Dave LaRonde] “I’m not entirely sure how long it would take to copy and paste an expression.”

Super-speedy.

Add the expression to one layer. Select the property, then Edit > Copy Expression Only. You only need to do this once.

From there on out, select a layer you want to apply the expression to and hit Ctrl-V (Cmd-V on a Mac). You can do this as many times as you like while the expression is on the clipboard.

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
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