Autostereogram ⭐ by KilledByAPixel

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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KilledByAPixel

function u(t) {

eval(unescape(escape`󭽩󭍨󚍸󚝦󫽲󚍤󬭡󭽉󫝡󩽥󚍣󛌭󞌬󜌩󛍳󨝶󩜨󬭥󬽴󫽲󩜨󚜩󛍤󬭡󭽉󫝡󩽥󚍣󛌲󝜶󛌰󚜬󪜽󭌿󝜺󝝥󜼻󪜭󛜻󭌿󨝲󨼨󞌶󜌬󝜸󝬬󝜰󜌬󨜽󪜯󛬳󞜸󛜱󛬵󝼬󨜩󞭦󪝬󫍒󩝣󭌨󪜥󜼲󚬸󛌨󪜾󟬵󚜪󞌬󞌬󞌩󚝦󪝬󫍓󭍹󫍥󟝠󪍳󫌨󙍻󪜪󪝽󘌹󞜥󙍻󤼨󪜪󚬵󚜪󞜹󯜥󨌊󮌮󨽬󪝰󚌩`.replace(/u../g,'')))

Jun 21 2021 1:53 PM UTC

}// 139/140

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Autostereogram ⭐

Show more comments…
u/lionleaf

That is so cool! Took me a second, but the star really pops!
u/rodrigo.siqueira

Wow I can see a ⭐
u/tomxor

Haha, nice star
u/magna

Yay! Not that it would greatly help bring it down to 140, but: (i>>5)*8 could be i>>5<<3 or even i>>2&-4
u/magna

I want to try rendering in one pass, like a shader, picking the right colour based on a bump map (either procedural, or maybe from a suitable emoji).
u/magna

I had this failed attempt back in 2018: for(i=3e4;i--;x.fillRect((C=i%213)*9,(T=i/213|0)*9,9,9))x.fillStyle=R((C%21+1)**T%255,T**(C%21+1)%255) for(i=9;i--;)x.drawImage(c,X=400+i*100,400,50,200,X-9,400,50,200)
u/KilledByAPixel

still trying to figure out why the other one had artifacts and this one seems not to, maybe something to do with randomizing the background you mentioned
u/Xen

i'll just believe you all since i'm blind in one eye lol
u/donbright

fascinating
u/smtsjhr

i love these!


      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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