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Speed expression for metronome animation
I’m currently trying to animate a metronome. My reference is at 00:10 of this video: https://www.youtube.com/watch?v=LVOjKCztqTs&ab_channel=GreenScaleGuitar
Right now I’m using this expression:
spd = effect(“speed”)(“Slider”);
rng = effect(“range”)(“Slider”);
d = 60/spd;
fd = d * 2;
p1 = -rng;
p2 = rng;
t = (time – inPoint) % fd;
if(t <= d) ease(t, 0, d, p1, p2);
else ease(t, d, fd, p2, p1);
The problem with this is that if i keyframe the “spd”(speed) slider, the animation will mess up and the stick doesn’t sway seamlessly, but rather have a jerk back movement before committing to the new speed. Anyone has an answer on how i can achieve the smooth speed down/up motion like in the reference?Some contents or functionalities here are not available due to your cookie preferences!This happens because the functionality/content marked as “Google Youtube” uses cookies that you choosed to keep disabled. In order to view this content or use this functionality, please enable cookies: click here to open your cookie preferences.
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1 Reply
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You’ll find the explanation why it happens and the remedy here:
http://motionscript.com/articles/speed-control.html
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