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function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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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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anthonylewis

remix of d/7718 by u/anthonylewis

function u(t) {

w=c.width^=0
for(i=30;i--;)
Z=w/(i-t%2+1),x.beginPath(),x.arc(960,540,Math.abs(Z),0,7),x.stroke()

Apr 21 2018 1:43 AM UTC

}// 97/140

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And now a round tunnel...

u/magna

#tunnel

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