Dweets awesomed by u/E-Mouse

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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ben

remix of d/4348 by u/lowpoly

function u(t) {

c.width^=0
x.globalCompositeOperation='xor'
for(p=2e3;p--;)d=p/300+1,x.fillRect(-99+(p+99*(t+5E4)*d)%2E3,(""+p*S(p)/9).substr(5,3)*2,d*=d,d)

Dec 30 2017 9:06 PM UTC

}// 140/140

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u/sigveseb

Tasteful use of xor!
u/New_Core

same effect can be done shorter with x.rect and x.fill('evenodd')

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Pjaerr

function u(t) {

c.style.background=R();x.fillStyle=R(...[S,C,T].map(_=>127*(_(t)+1)));a=137.5*frame;r=8*frame**.5;x.fillRect(r*C(a)+960,r*S(a)+540,8,8)

Dec 30 2017 7:50 PM UTC

}// 135/140

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A little bit of Phyllotaxis. http://algorithmicbotany.org/papers/abop/abo…

Show more comments…
u/Pjaerr

btw, changing the angle a from 137.5 to 137.3 or 137.6 produce different, albeit nice, patterns.
u/Bendoman

Second best thing on here by far.
u/dubistdu

WOW
u/trupples

Also.. shouldn't it be 137.5 * pi / 180 ~~ 2.39982772149 as the trigonometric functions take in radians?
u/trupples

137.5 also kind of "isolates" the spirals after a short while while 2.4 does not
u/Pjaerr

Yeah, that'll be it actually. I still thought it looked decent!
u/DiamondDrake

I was just working on a Phyllotaxis dweet, though i was trying to use ellipse that just needs way too many characters
u/@no_identd

Although the point about radians is fully correct, I'd like to point out that the most accurate IEEE single float approximation of this angle in degrees is 137.50777 (which internally becomes 137.5077667236328125)
u/lionleaf

#spiral #flower #plant #botany
u/fujimotos

This is amazingly beautiful.

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rikardlindstrom

remix of d/4818 by u/rikardlindstrom

function u(t) {

!t&&x.translate(980,540)
for(i=20;i;i--){w=i*98
x.fillStyle='#'+(3E3|(25<<(i+t*20)%28)).toString(16).substr(-6)
x.fillRect(l=-w/2,l,w,w)}

Dec 30 2017 5:48 PM UTC

}// 137/140

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u/joeytwiddle

reverse #tunnel

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E-Mouse

remix of d/4838 by u/E-Mouse

function u(t) {

e=''.split(' '),s=[],c.width=100
for(i in e){o=e[i],n=+o;if(n==o)s.push(n);else q=s.pop(),w=s.pop(),s.push(eval(w+o+q))}x.fillText(s,9,9)

Dec 30 2017 1:36 PM UTC

}// 137/140

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trupples

remix of d/4838 by u/E-Mouse

function u(t) {

e='1 2 + 100 *'.split(' '),s=[]
e.map(o=>+o==o?s.push(o):(q=s.pop(),s.push(eval(s.pop()+o+q))))
document.body.innerText=s

Dec 30 2017 1:19 PM UTC

}// 121/140

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E-Mouse

function u(t) {

e='1 2 + 100 *',e=e.split(' '),s=[]
for(i in e){o=e[i],n=+o;if(n==o)s.push(n);else q=s.pop(),w=s.pop(),s.push(eval(w+o+q))}x.fillText(s,9,9)

Dec 30 2017 1:00 PM UTC

}// 140/140

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A RPN(reverse polish notation) calculator in 140 bytes. The text is really small so either you have to zoom in or change the font size.

u/E-Mouse

Enter the RPN code in the e variable ("e='1 2 + * 10'")
u/E-Mouse

Btw only js operators

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barrebas

function u(t) {

c.width|=d=1e3;for(i=x.lineWidth=z=20;--i;){f=C(t);x.strokeStyle=R(f*i*z,f*i,0);x.beginPath();x.arc(d,d/2,d/2-i*z,f-i*.3,f**2*5);x.stroke()}

Dec 30 2017 11:42 AM UTC

}// 140/140

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E-Mouse

remix of d/4826 by u/Curlip

function u(t) {

x.fillStyle="#FFF5";x.fillRect(0,0,1920,1080);x.fillStyle="#000";for(i=9;i--;)w=99*i+400+S(t)*300,x.fillRect(w,400-99*S(w/99),50,200)

Dec 30 2017 10:21 AM UTC

}// 133/140

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Golfed it down 7 bytes

u/E-Mouse

Replace 1920 with 2e3 and 1080 with 1e3 and you are down to 131 bytes

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rikardlindstrom

function u(t) {

!t&&x.translate(980,540)
for(i=99;i;i--){x.fillStyle='#'+(4E5+(255<<(w=t*i))).toString(16).substr(-6)
x.rotate(.3)
x.fillRect(l=-w/2,l,w,w)}

Dec 30 2017 6:15 AM UTC

}// 140/140

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jaemiejaemie

remix of d/4761 by u/jaemiejaemie

function u(t) {

x.beginPath();for(Z=c.width=i=640;i--;x.lineTo(C(i/8-t)*a+320,S((i-t)/8)*a+180))a=i*i/16;x.fillRect(0,0,Z,Z),x.strokeStyle='#fff';x.stroke()

Dec 29 2017 11:54 PM UTC

}// 140/140

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xen helped me fix this, ty

u/Xen

no worries mate

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