[Team dweet with /u/PeCaN] L-system vis… by FireFly

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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FireFly

function u(t) {

for(s='0',i=5;i--;c=s[t*60|0])s=s.replace(/\d/g,i=>['0-1+0+1-0',11][i]);c<2?x.translate(0,32,x.fillRect(0,0,3,32)):+c||x.rotate(c+120/57.3)

Mar 1 2017 5:43 PM UTC

}// 139/140

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[Team dweet with u/PeCaN] L-system visualizer! Change initial state (s), #iterations (i), transition rules (['0-1+0+1-0',11]), which digits correspond to 'draw and move forward' (c<2), angle (120) to your own L-system ruleset. Digits 0-9 correspond to variables/constants (for each constant, add a rule that maps it to itself, i.e. to 'i').

u/5Mixer

Ha awesome! I was surprised when I saw this, I'd seen it on the internet before and was idly scribbling on the back of my book in a boring class today. Dope stuff :D


      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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