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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.
Current theme challenge: #ScaryMovies
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remix of d/19958 by u/smtsjhr

function u(t) {

}//
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  • short looped variant of d/19958
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  • u/danny@hille.dk
    I can't shave of the last 3 bytes without messing it up :-(
  • u/danny@hille.dk
    139b version ->for(c.width|=j=9;j--;)for(i=4,x.moveTo(u=555*(T(t/4+j)),v=u/i+9*C(t));i--;x.lineTo(u+j+v*C(a=S(5*t+S(j)))*S(1.4*i),v+v*(i%2*S(a))))x.fill()
  • u/smtsjhr
    wow well done! very fair trade off removing that 'a/9' addition since its small: |a/9|<0.1
  • u/danny@hille.dk
    Thanks, Im not going tell how long it took me to figure that out though :-)

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function u(t) {

}//
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Xen
remix of d/7011 by u/DirtyDan

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}//
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  • Had to play

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function u(t) {

}//
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  • Rising bubbles

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function u(t) {

}//
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remix of d/19945 by u/katkip

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}//
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remix of d/19945 by u/katkip

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}//
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  • Smaller toxic #sign

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remix of d/19937 by u/tomxor

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}//
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function u(t) {

}//
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function u(t) {

}//
140/140


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  • u/danny@hille.dk
    interesting "scanline update" r=Math.random;for(i=k=128;i--;x.fillRect(k*X,k*Y,i/t,i/t))X=r(Y=S(t)*4+4)*16,x.fillStyle=R(h=k*C(5*C((p=Y*Y/9-Y)+S(X*X-X))+p/Y)+k,T(h/i)*99)
  • u/taupelink
    hunh...i wonder whether the scanline method gives results that are indistinguishable from the both-dimensions-random method. if so, then the r variable can be golfed away
  • u/taupelink
    maybe they'd look mostly the same with this type of dweet, since the shrinking squares fill up so much space. under other circumstances though, i would imagine that "t" only comes in multiples of 1/60th, so S(t) is likewise constrained. ¯\_(ツ)_/¯
  • u/taupelink
    anyhoo, thanks for sharing variants!

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