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Random / organic / irregular rate of speed
Hi! I’m making an animation that’s meant to feel very tactile and “hand-made.” One of the elements is a large paper disc (imagine a children’s craft, with a brad in the center). If an actual person were turning the disc, the rate of speed would surely stutter and vary. This is effect I’m after.
My thought was to place my continually, smoothly rotating disc in a pre-comp, then allow time remapping on the pre-comp. I created one time-remapping keyframe every second for the duration of the rotation. Just a neat row of pins that I can next futz with. If only I could randomize the timeline position slightly of all those keyframes, so that some intervals generated faster progression and others slower. Problem is, that’s surprisingly not a feature of Rift, Randomatic 2, or even Keystone (as far as I can tell.) Moving keyframes around manually is possible but you can imagine the tedium.
Is there a better way to go about this, or something I’m missing?
Thanks!
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2 Replies
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You could try Timewarp with a randomizing Speed expression, like this:
minSpeed = 75;
maxSpeed = 110;
minDur = 1;
maxDur = 2;
t = tPrev = inPoint;
seedRandom(index,true);
while (t <= time){
tPrev = t;
t += random(minDur,maxDur);
}
seedRandom(tPrev,true);
random(minSpeed,maxSpeed) -
This is wonderful, Dan. Timewarp hadn’t been on my radar as an effect. Thank you very much!
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