Totally different dragon curve implemen… by eruonna

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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eruonna

function u(t) {

a=[0,-9,0,9,0]
if(!t){n=0;d=0;b=380;c=830;x.moveTo(a,b)}
d+=((n&-n)<<1)&n++?1:3;d%=4
b+=a[d];c-=a[d+1]
x.lineTo(b,c);x.stroke()

Apr 17 2017 10:36 PM UTC

}// 127/140

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Totally different dragon curve implementation with 13 fewer bytes and it correctly draws the first segment

u/eruonna

okay, not sure if it is worth kicking out yet another version to get the positioning right
u/eruonna

okay, not sure if it is worth kicking out yet another version to get the positioning right
u/donbright

color - - a=[0,-9,0,9,0] if(!t){n=0;d=0;b=380;c=830} d+=((n&-n)<<1)&n++?1:3;d%=4 b+=a[d];c-=a[d+1] x.fillStyle=R(128+n%256,64+n%128) x.fillRect(b,c,9,9)


      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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