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Velocity
I know ive seen it somewhere but i cant find it at the moment, but im trying to link numers to a keyframed layers velocity.
i have an icon representing a person(position keyframed layer), and a heart icon with “bpm…” i just wanted to retrieve the velocity of that movement to represent the heart bpm, to an extent, i can adjust the number to be more accurate if i can just figure out how to retrieve the info. thanks.
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3 Replies
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This will give you the velocity vector:
thisComp.layer(“person”).transform.position.velocity
but you probably really want speed instead of velocity:
thisComp.layer(“person”).transform.position.speed
Dan
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oh, that easy huh. what is exactly the difference between what the speed and velocity gives you? And is speed in pixels per second?
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speed is in pixels per second. Velocity is a vector that has direction and magnitude. You can use length() to extract speed from velocity, but it’s an extra step. If you don’t care what the direction is, speed is what you want.
Dan
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