Fredkin Replicator by pavel

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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pavel

function u(t) {

eval(unescape(escape`琿〺愽笱㈳㐲㨱紻楦⡦牡浥┳〽㴰☦晲慭攼㌰⨳㌩笠景爨挮睩摴桼㵢㵻紬焽㉥㐻椽焭ⴾ㸷㭸⹦楬汒散琨㄰⩩ⰱ〪樬㄰ⱡ孱崪㄰⤩景爨樽焥ㄲ㠬欽㤻欭ⴻ⥢孱嵞㵫ⴴ㽡嬨椫欥㌭ㄩ⨱㈸⭪⬨欯㍼〩ⴱ崺〻愽扽`.replace(/u(..)/g,"$1%")))

Dec 11 2018 8:27 AM UTC

}// 137/140

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Fredkin Replicator

u/pavel

Cellular automaton. A cell turns on if it has an odd number of on neighbors and turns off otherwise.
u/pavel

First 32 generations
u/pavel

(starting with one on cell in the middle)
u/lucio

Awesome Numberphile contribution :-)


      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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