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Animate property based off XPos + Time?
So it’s pretty straightforward to animate, say, opacity based off time, but let’s say I want to animate it based off time AND off where the layer is on the screen. Essentially I want layers with lower X positions to reveal themselves before layers with higher X positions so the layers are gradually filling up the screen from left to right. I’m working with a comp that has hundreds of layers all forming up a pattern, so hand animating this would be a nightmare and I can’t find QUITE enough help for my newbishness to make this happen.
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5 Replies
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Something like this should do it:
wipeDur = 3;
fadeDur = .5;fadeStart = wipeDur*(transform.position[0]/thisComp.width);
linear(time,fadeStart,fadeStart+fadeDur,0,100)Dan
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Wow! Perfect. Works like a charm. Thanks a ton Dan :). Now to go and research everything you’ve done there so that I can learn from it. I can see the principles being very valuable in the future. Thanks again!
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So the above did indeed work exactly as intended, but now I’m thinking it would be better to minorly stagger the elements. It seems like I’d want to wiggle fadeStart, but I’m still a little iffy on how wiggle actually works. I’ve read the AE help on the arguments it needs, but the only value I seem to really get for the opacity is either 0 or 100. Can I bother you for some more help? 🙂
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There are probably a lot of ways to do it. Try this one:
wipeDur = 3;
fadeDur = .5;
randomRange = .5;
seedRandom(index,true)fadeStart = wipeDur*(transform.position[0]/thisComp.width) + random(randomRange);
linear(time,fadeStart,fadeStart+fadeDur,0,100)Dan
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Oh man that is SO much simpler than what I was trying to do :). It’s pretty elegant when you understand what’s going on. After looking up the elements of what you’ve done above, I think I’ve learned an awful lot. I even hooked up randomRange to a slider so that I could test multiple values efficiently. It’s a small thing, but for someone who’s an AE scripting novice it made me happy.
Thanks again, Dan!
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