OBSERVATION 012
渦
Uzu — Whirl
Press the picture or the button to reduce the points.40,000 → 625 → 40 → 1, then back to 40,000.
At fewer points, dots grow and trails linger to help you follow their paths.
“Listen” maps the displayed points to sound.Changing the count rebuilds the sound.
The nearer the centre, the faster it turns.
That alone makes the arms.
Nothing was laid out in a spiral.
Every point is only going round its own ring.
When inner and outer turn at different speeds, a row that was straight is drawn out,
and in time it takes the shape of an arm.
This is not a creature.
It has not been given a name yet.
Read and verify the equation
(i, t,
g = i * .618034 % 1, h = i * .754878 % 1, q = i * .414214 % 1,
d = 26 + 148 * sqrt(g),
w = (1 + (g * 12 | 0)) * .25,
a = h * TAU + .62 * sin(h * TAU * 3 - 3.4 * log(d / 26)) + t * w,
r = d + 13 * sin(d * .12 - t * 2 + q * 6)
) => [200 + r * cos(a), 200 + r * sin(a) * .8 + 14 * sin(a * 2 - t)]
Fingerprint of this equation
sha256:f4afe8367e7005f10e6d625625950d5612c994329385f0aaf582bcb7de032fed
The same point number and time give the same coordinates.
Trails and the appearance of points depend on rendering settings and the device.
The button above takes the equation out as it is. To count it again yourself:
pbpaste > f.txt && printf %s "$(cat f.txt)" | shasum -a 256
Take it and run it.What appears when you change the equation? Run and rewrite this equation →