Hot dweets by u/nrfenner

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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nrfenner

function u(t) {

f=(a,b)=>x.lineTo(a/2,b/2+540)
u.r=r=1+u.r|0
u.a=a=u.a||[]
a[p=u.p|0]=1
s=(p<r|a[p-r]|0)*r-r/2
f(p,0)
f(p+s,s)
f(u.p=p+s*2,0)
x.stroke()

Jun 23 2018 10:42 PM UTC

}// 136/140

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visualization for http://mathworld.wolfram.com/RecamansSequenc…

u/nrfenner

a bit of a time leak since there's no enough chars to call x.beginPath(). If someone can figure out how to save enough to do, please do!
u/pythech

done d/8714
u/pythech

that one had some problems, fixed d/8715
u/DataMeta

Love this interpretation! I'd been thinking of implementing the sequence

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