OBSERVATION 024
砂紋
Samon — Sand ripples
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.
Joining the places equally near to three stones.
Around a stone it becomes a ring.
Far from the stones the lines run straight.
Where ring meets ring, a crease forms.
That is the same distance from either stone.
It belongs to neither.
The lines are the same width from beginning to end.
It looks crowded not because the spacing is narrow
but because that is where nearness changes fastest.
Read and verify the equation
(i, t,
gx = i % 200, gy = (i / 200 | 0),
x = 3 + gx * 1.97, y = 3 + gy * 1.97,
e = min(hypot(x - 128, y - 158) - 17,
min(hypot(x - 250, y - 116) - 11,
min(hypot(x - 196, y - 272) - 22, (y - 40) * .92 + 58))),
q = (e + 5 * sin(t)) / 15
) => e < 0 ? (i % 5 ? [-9, -9] : [x, y])
: (q - floor(q)) < .17 ? [x, y] : [-9, -9]
Fingerprint of this equation
sha256:dc866128c6647e224ad29a6ccf8ae50e89e790007137995a34727f09f3e74867
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 →