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function u(t) {
} //
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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.
Theme challenge of the month: #snowflake
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remix of d/20689 by u/yonatan

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  • golf and play
  • u/danny@hille.dk
    -2 bytes -> q=c.width=99;for(m=20;m--;)for(n=i=q;i--;x.fillRect(i,a*(25-m),2,q,x.fillStyle=R(m*9)))for(a=j=3;j--;a+=S((t/m*q+i)*S(m*k)*k/9)/k)k=4**j*

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remix of d/16195 by u/yonatan

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  • much faster in firefox

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  • u/joeytwiddle
    Entrance to sietch as perceived by an insect with compound eyes
  • u/tomxor
    Nice description, (and dweet) :)

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remix of d/20615 by u/smtsjhr

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  • webbed polygons spin themselves

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  • linear motion rolling circle illusion
  • u/katkip
    #illusion
  • u/DataMeta
    nicely done
  • u/pavel
    If you delete c.width=1920 you can see only the first dot move linearly
  • u/femto113
    curves are a side effect of changing N with t, if you use a fixed value like N=16 you get straight lines

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