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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.
Theme challenge of the month: #time
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function u(t) {

}//
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  • an attempt at something like a twister
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  • u/joeytwiddle
    That's a very juicy #twister!
  • u/cyhawk
    I teach 9-year-olds programming and used a tidied up version of this to show them how to figure out how something works. They loved it! Thanks! I've added a bit of gap between the strands to make it easier to understand, and I think it looks good. Like Math.max(180*S(a-1.2),0).
  • u/rnbw
    wow, i would have never thought that my recreational programming would be used for educational purposes. glad i was able to help those kids out on their journeys!
  • u/danny@hille.dk
    Just saw this, nice code man! Save 11 b like this: for(c.width=i=300;i--;)for(j=8;j--;x.fillStyle=#f+j*15)x.fillRect(i,99-S(a=t-i/80*C(t+i/99)+j*.9)*40,1,Math.max(40*S(a-1.1),0))

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remix of d/10690 by u/yonatan

function u(t) {

}//
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  • u/yonatan
    c.innerHTML=<svg><filter id=f><feTurbulence baseFrequency=${1/t} result=""/><feDisplacementMap in=SourceGraphic scale=${t}>;x.font='9in x';x.fillText(c.style="filter:url(#f)",0,1e3);
  • u/yonatan
    Judging by the sound of my fan, I'm guessing filters use SIMD
  • u/yonatan
    or maybe just if they can't find a working GPU
  • u/yonatan
    firefox seems to handle this one better than chrome

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remix of d/10685 by u/yonatan

function u(t) {

}//
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  • Another SVG filter test
  • u/yonatan
    97 chars: c.innerHTML=<svg><filter id=f><feTurbulence baseFrequency=${t%1} id=p>;c.style="filter:url(#f)"
  • u/yonatan
    actually less, i don't know why there's an id=p in there
  • u/katkip
    #maze

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