Dweets awesomed by u/xem

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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Current theme challenge: #Opposites

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xem

function u(t) {

r=z=>Math.random()*255
y=z=>R(r(),r(),r(),r()/99)
if(t-~~t<.15)c.style=`transition:1s;background:${y()}radial-gradient(${[y(),y(),y(),y()]}`

Dec 30 2017 3:40 PM UTC

}// 140/140

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u/farter

t%1

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joeytwiddle

remix of d/4805 by u/Jezza

function u(t) {

c.width=640;d=-2.1;e=1.9;for(i=l=j=t;i<6e4;i++)k=S(d*l)+C(t)*C(j*d),m=S(e*j)+S(t)*C(l*e),j=k,l=m,x.fillRect(320+j*100,180+l*70,.3,.3)

Dec 30 2017 3:29 PM UTC

}// 133/140

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u/xem

Splendid
u/joeytwiddle

I do like adding alpha to other people's attractors http://bit.ly/2pZCrOg http://bit.ly/2DDaPjO
u/joeytwiddle

This version is easier to resize: https://www.dwitter.net/d/5336
u/joeytwiddle

Please do give Jezza an upvote. They did most of the work here!
u/katkip

#attractor

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Jezza

function u(t) {

c.width=1920;d=-2.1;e=1.9;for(i=l=j=t;i<9e3;i++)k=S(d*l)+C(t)*C(j*d),m=S(e*j)+S(t)*C(l*e),j=k,l=m,x.fillRect(960+j*400,540+l*250,2,2)

Dec 30 2017 5:02 AM UTC

}// 133/140

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Newbie here. Would have loved to add some alpha but no room :)

Show more comments…
u/Jezza

Heavily inspired by: http://paulbourke.net/fractals/clifford/
u/sigveseb

A trick for alpha is to fillrect with a width < 1 ;)
u/joeytwiddle

You can save 3 chars with: c.width|=e=1.9 (doesn't seem for work for negative d)
u/joeytwiddle

I did you a low-res remix: https://www.dwitter.net/d/4842
u/Jezza

Thanks for the tips and this remix!
u/joeytwiddle

jonathan_b has also done a remix: d/5348

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tjl

function u(t) {

x.fillText(c,1e3,9);x.filter='saturate(116%)hue-rotate(15deg)contrast(95%)sepia(1%)';x.setTransform(1,0.01,-0.01,1,5,-8);x.drawImage(c,0,0);

Dec 29 2017 6:02 PM UTC

}// 140/140

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NB: Results vary between browsers. Tested on Linux Chrome and Firefox, different but cool results on both.

u/Xen

nice
u/coltonb

who put this acid in my coffee
u/ctrlx

(Shhhhh, or everyone will want some of your coffee! :P )

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joeytwiddle

remix of d/2612 by u/joeytwiddle

function u(t) {

t?c.width=W=200:P=Z=0;for(i=36;i--;j==Z&&(X-99)**2<60?Z=9:Z?onclick=e=>Z--:P++)j=i>>2,x.fillText(j?'🚌':'🐢',j?X=j%5*t/i*P/23%W:99,9*(j||Z))

Dec 29 2017 2:29 PM UTC

}// 138/140

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Crossy tortoise. Click to play

Show more comments…
u/zanella

Holy s**t, that was awesome!
u/joeytwiddle

Thanks hehe. The traffic patterns suffered in this version, to make room for the emojis.
u/iverjo

This needs more upvotes!
u/_nderscore

Awesome!
u/lionleaf

Oh wow! Amazing!
u/trupples

holy shit
u/SIGILLIM

I won! :D. This is so creative.
u/leon

extra
u/vberlier

super dope stuff here
u/joeytwiddle

The traffic I wanted, but cannot fit: j?X=j%5*(t+i)*P/400%W:99
u/lionleaf

#game #interactive #emoji #frogger #tortoise #bus
u/fujimotos

#playable
u/katkip

Impossible
u/hvianna

👍👍
u/joeytwiddle

For playability, the boxy d/2612 is my favourite

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ben

remix of d/4509 by u/ben

function u(t) {

v=(a,b,g,r)=>{for(i=0;i++<r;)x.fillRect(a+=S(g),b-=C(g),r/9,2)
r>1?v(a,b,g+=o,r*=.7)&v(a,b,g+=5,r):0}
o=S(t)/9+1
c.width=500
v(250,280,0,80)

Dec 29 2017 1:23 PM UTC

}// 140/140

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blowing in the fractal wind

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u/sigveseb

Sweet!
u/Xen

very nice!
u/Bendoman

Fabulous.
u/lionleaf

Amazing!
u/lynnlangit

love, love, love it!
u/nystrand

elegant!
u/iverjo

#recursive
u/lionleaf

#fractals
u/lionleaf

#fractal . hmm, maybe not plural
u/vain

so beautiful - amazing work!

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quuxman

remix of d/4607 by u/quuxman

function u(t) {

x.beginPath()
r=1100
for(i=0;i<355;i+=3.14+C(t/200))x.lineTo(S(i)*r+960,C(i)*r+540)
x.fillStyle=R(c=(S(t)+1)*30,10,c*3)
x.fill('evenodd')

Dec 29 2017 7:36 AM UTC

}// 137/140

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full range of patterns takes ~10.5 minutes

u/iverjo

Impressive tunnel!

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ben

function u(t) {

function v(a,b,g,r){if(r>1){x.fillRect(a+=r*S(g),b-=r*C(g),2,2)
v(a,b,g-1+C(t),r*=.7)
v(a,b,g+.5+S(t),r)}}c.width=500
v(250,270,0,80)

Dec 28 2017 9:28 PM UTC

}// 133/140

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u/Xen

LOVE IT!
u/ben

trying to make a swaying tree but requires too many characters to draw the branches
u/Xen

join the chat and show your code... :-)
u/sigveseb

Very good!
u/itsjustmustafa

recursive functions in under 140, love it!
u/Bendoman

Best thing on here by far.
u/FrankMoren27

awesome
u/iverjo

#recursive
u/lionleaf

#fractals
u/vain

incredible

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xem

function u(t) {

if(!t)document.write("<h3>DWITTER SOURCE CODE EXPOSED! #H4XX0R😋<textarea style=width:85vw;height:85vh>"+document.documentElement.outerHTML)

Dec 28 2017 9:18 PM UTC

}// 139/140

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I'm so going to jail for that 😱

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u/Xen

LOL
u/E-Mouse

Xem and Xen in the same comments, comfusing!
u/Xen

:-D both in the same team aswell...
u/xem

xem vs. xen => the M means Mighty, the N means Nasty :D
u/Xen

Xtreme English Nutter!! ;-)
u/SIGILLIM

This is creative xD

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Xen

remix of d/3059 by u/Xen

function u(t) {

for(t?0:(c.width=599,m=8e4);m;x.rotate(--m&-m&m/2?11:-11))x.fillRect(0,0,1,1),x.translate(1,0)

Dec 28 2017 8:16 PM UTC

}// 94/140

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Shoutz to the p01,xem & the CodeGolfTeam!

u/Xen

https://github.com/xem/miniDragonCurve#readme

dwitter.net | xem (5208)