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u(t) is called 60 times per second. t: Elapsed time in seconds. S: Shorthand for Math.sin. C: Shorthand for Math.cos. T: Shorthand for Math.tan. R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5) c: A 1920x1080 canvas. x: A 2D context for that canvas.
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  • Pen Pattern

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  • electric #arc

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  • 140 chars thanks to yurume!

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  • u/leafyvez
    pi ≈ 4 * # points in the quarter circle / total points although it converges rather slowly (~ sqrt(number of points) )

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  • Recamán's sequence!

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  • u/taupelink
    #waitforit
  • u/taupelink
    I really just kind of stumbled on this effect. I started out trying to animate d/24361, but then I forgot to clear the screen with each loop execution, and I noticed shadows forming...
  • u/taupelink
    ...and it turns out there's something about the way that X=1+S(m),Y=S(m*m--) do NOT function as pseudo-random formulas in this dweet. If you replace the X formula with X=2*Math.random() you just get noise....
  • u/taupelink
    Maybe what's happening is that locally, the width and height formulas act like piecewise-continuous trigonometric functions. Hence the curvy-yet-segmented little shapes.

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  • more spiraly trefoil

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  • spiraly trefoil variation

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  • satisfying trefoil juggle with synced color change (:

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