d/19663 by veubeke

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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veubeke

function u(t) {

c.width^=0
for(i=400;i--;x.fillRect(960-6+C($)*_,540-6+S($)*_,12,12))$=i/200*Math.PI,_=500*S(t+i/4),x.fillStyle=`hsl(${_},99%,50%)`

Aug 12 2020 3:49 PM UTC

}// 131/140

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u/jgobi

it's very pleasing to vary the Math.PI's exponent and see what happens. particularly i liked a lot the 9 (d/19684), 11 and 19. I tried to adjust this to auto change this, but it always get bigger than 140 characters ^^"
u/jgobi

ops, the https://www.dwitter.net/d/19684 is for the 11 variation


      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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