Golfed version (120 characters): c.widt… by iverjo

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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iverjo

remix of d/79 by u/iverjo

function u(t) {

c.width=960;for(i=2e3;i--;)s=7/(S(i/42)*S(2.79*i+t-1.57)+2),x.fillRect(480+460*S(i/42)*S(2.79*i+t),270+160*(C(i/42)+T(t/9+i/42)),s,s)

Jul 29 2016 12:55 AM UTC

}// 133/140

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Golfed version (120 characters): c.width=960;for(i=2e3;i--;)b=2.79*i+t,x.fillRect(480+460*S(a=i/42)*S(b),270+160*(C(a)+T(t/9+a)),s=7/(S(a)*S(b+4.7)+2),s)

u/iverjo

118 characters: c.width=960;for(i=2e3;i--;)x.fillRect(480+460*S(d=i/42)*S(b=2.79*i+t),270+160*(C(d)+T(t/9+d)),s=7/(S(d)*S(b+4.7)+2),s)
u/iverjo

115 characters: c.width=960;for(i=2e3;i--;)x.fillRect(480+460*S(d=i/42)*S(b=2.79*i+t),270+160*(C(d)+T(t/9+d)),s=7/(-S(d)*C(b)+2),s)
u/iverjo

114 characters: c.width=960;for(i=2e3;i--;)x.fillRect(480+460*S(d=i/42)*S(b=2.79*i+t),270+160*(C(d)+T(t/9+d)),s=7/(S(d)*C(b)+2),s)


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

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