d/5392 by Exca | Dwitter

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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Exca

function u(t) {

c.width|=t/=25
x.fillStyle=R(0,0,0,.1)
q=(w,o)=>{b=S(w/10+t)*7+960+o,v=180+w*10
x.fillRect(b,v,w,1080-v);}
for(j=54;j--;)q(j,S(t*j)*900)

Jan 3 2018 6:08 PM UTC

}// 138/140

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u/sigveseb

kefrens bars! (alcatraz bars? :D )
u/Exca

Indeed, with a pendulum swing
u/Exca

Had a version with ropes coming from top and each of the bars as squares. Couldn't get that one under 156 characters though.


      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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