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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.
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function u(t) {


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  • u/plusright
    adding color is difficult! I want to do more with it but can't beat the character count.
  • u/Xen
    few more bytes for you... c.width|=r=200;for(j=20;j--;x.fillStyle=R(0,0,0,.8))for(i=20;i--;)x.fillRect(r+r*S(i+t)*j/2,T(t/j)*r+r*C(i+t)*j/2,z=r-i*j,z)
  • u/pavel
    x.fillStyle=R(0,0,0,.8) -> x.globalAlpha=.8
  • u/plusright
    nice, thank you both.

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