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function u(t) {
} //
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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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ciaccodavide

function u(t) {

}//
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  • u/ciaccodavide
    Uncompressed code of the first (and prettier) version: L=c.width=567;onmousemove=e=>T=e;r=(j,k)=>(x.moveTo(j,k),x.arc(j,k,9,0,9));r(X=T.x,Y=T.y);for(i=9;i--;t>d+3&&Math.abs(h-X)+Math.abs(k-Y)<25&&(g=-d+(d=~~t),s+=','+g))r(h=t*21*i%L,k=i*13*t%L);x.fill();throw~~t-d+s;}{s=g=d=0

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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)