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Incrementally increase position.
Anyone know a way to obtain the value of the possition one frame in history? I can’t figure out a way to do this. I previously avoided doing this but that resulted in a history dependent expression that is very hard to alter.
All i need is:
5+transform.xPosition.valueAtTime(time-1*thisComp.frameDuration);The problem with that is that, it doesn’t work.
I’ve spent countless hours trying to figure this out and I cant find a solution.
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3 Replies
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An expression can’t retrieve a value that it calculated on a previous frame . Your choices are to recreate it somehow or to come up with a way to base your caluclation on time.
The first method generally involves creating a loop that goes frame by frame to recalculate the value you’re looking for.
The second method is much easier, but it’s not always possible to create the necessary time-based formula.
dan
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Well that’s a bummer, there should be something that retrieves the current location of the object your moving, dynamically.
My only other option is to increment a slider that will hold the current value of the position. Not sure if this will work but i will try it.
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The reason I cant base it on time is because I am animating the the speed at which the object moves. I had it set up to animate based on time before, the problem with that was that i could not make the animation speed up without making the contents within the animation speed up along the way.
I am animating clips moving horizontally on the screen. I want them to move faster at one point and then slow down, without speeding up the playback of the clips.
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