zoetrope by indygon

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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indygon

function u(t) {

x.reset();s=400;for(j=1;j<13;j++){for(i=0;i<3*s;i++){c=255-j*30
x.fillStyle=R(c,c,c)
x.fillRect(i*S(j/2+i*t/s)+960,i*C(j/2+i*t/s)+540,9,9)}}

Feb 11 2024 3:31 AM UTC

}// 140/140

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zoetrope

u/indygon

aka "enter the headache vortex"
u/indygon

Here's an pre-golfed version with some parameters in the first line if anyone wants to mess around with it: x.reset();a=1e3;s=300;p=2*Math.PI;n=12 for(j=1;j<n+1;j++){ for(i=0;i<a;i++){ c=200-j*20 x.fillStyle=R(c,c,c) x.fillRect(1.5*i*S(j*p/n+i*t/s)+960,1.5*i*C(j*p/n+i*t/s)+540,9,9)}}


      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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