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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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remix of d/4765 by u/bobdunn

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remix of d/2370 by u/magna

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  • More thinking outside the box
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  • u/nonce
    I think this is Kosher. You are manipulating the canvases style after all. Also you don't need the with c.style.background= is 5 char shorter
  • u/magna
    Ah dang. That's a vestige of trying to add more effects to this :)
  • u/magna
    #default
  • u/fujimotos
    #light

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  • f=(x,y,n=5)=>n>0?f(f(y,x/2,n-1)*2,y/2-x/2-t*2,n-1):S(x);for(i=240;i--;)x.fillStyle=R(f(i,t,5)*255,f(i,t,6)*255),x.fillRect(i*8,0,8,8);x.drawImage(c,0,8)

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  • calm sine visualizer (newbie)

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function u(t) {

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function u(t) {

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  • u/joeytwiddle
    We are not going to warp, Captain, warp is coming to us!

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remix of d/812 by u/hill

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  • Star killer? More like CPU Killer
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  • u/13thptr
    -19 with some sacrifices..don't know if this could fit... perhaps you could remove fillStyle and use the subpixel rectangles
  • u/13thptr
    for(i=8e3;p=(k=i&127)/40,O=(j=i>>7)/20,i--;x.fillRect(960-C(O)*S(p)*500,540+C(p)*500,24,12))x.fillStyle=R(g=S((j+t*41)&k)*80*(3-O)*((p-2)**2+((t+O)%6.3-2)**2<.2?.2:1),g,g)
  • u/13thptr
    *subpixel rectangles method, but that would run even slower
  • u/joeytwiddle
    as if millions of motherboards cried out in pain and were suddenly overheated

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