Dweets awesomed by u/karan

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: #Opposites

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quuxman

function u(t) {

p=t?p:Array(9e3).fill(0)
for(i=0;i<9e3;x.fillRect(p[i+=2]+=(p[i+1]+=Math.random()-.5)%2e3,p[i+2]%1e3,9,9))
x.fillStyle=R(S(t*5)*120,0,0,.3)

Dec 29 2017 10:45 AM UTC

}// 139/140

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u/Zikoat

i was looking for a way to initialize a variable, good one!
u/quuxman

Yah, stole it from u/Xem or someone
u/joeytwiddle

#virus #outbreak
u/vain

Amazing!

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nystrand

function u(t) {

for(i=w=3e3,a=b=g=333*T(t%9/7);j=(i^a*a)%4,i--;x.fillRect(a+=g+C(j*5+t)*g-a/2-w+g,b+=g+S(j*9+t)*g-b/2-w,s,s),w=2)x.fillStyle=R(s=w*9,w,s,.1)

Dec 28 2017 2:50 PM UTC

}// 140/140

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Show more comments…
u/sigveseb

This one is fantastic! Good job indeed
u/Bendoman

Brilliant!
u/Xen

very very impressive!
u/magna

HOW ON EARTH
u/nic

MIND:=BLOWN
u/lowpoly

Gawd, I learnt a lot today
u/Citiral

Since when does Javascript support black magic?
u/sigveseb

Needs more upvotes!
u/doof

this was such a delight to unpack :)
u/Lazy1337

wow
u/aleamb

amazing
u/iverjo

I'm awestruck
u/xem

unbelievable
u/trapkid

lol
u/aleamb

epic! one of the greatest dwitter
u/ThreeNPlusOne

sierpinski triangle :D
u/xem

It'd be nice to have a blog post explaining it :) (please?)
u/trupples

I didn't look much into it but it might have to do with a thing I read about once where if you have a point that "walks" half the distance towards a random corner of a triangle you'll end up drawing a sierpinski triangle sorta like you can see in https://www.dwitter.net/d/5097
u/trupples

And according to http://distrustsimplicity.net/articles/sierp… if you were to use 4 points instead of 3 you'd get a tetrahedron like in this dweet. Fascinating stuff
u/stiaje

#witchcraft
u/lionleaf

#top_of_the_year
u/Scaledish

wow
u/Tekmap

👏👏👏👏👏
u/vain

that's not from this world! incredible code / 3d fx and blur
u/rodrigo.siqueira

3D flying #sierpinski pyramid #fractal

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Feyyy

function u(t) {

c.width|=0
for(i=0;i<2800;i++){
x.fillStyle=R(0,0,0,1);
q=i*.2*t
w=i*0.4
x.fillRect(w*S(q)+960,w*C(q)+540,8,8)
}

Dec 28 2017 11:02 AM UTC

}// 113/140

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karan

remix of d/3713 by u/bobdunn

function u(t) {

c.width=1920; 
for(i=0;i<64;i++){
x.fillStyle=`hsl(${t*70},47%,50%)`;
  x.fillRect(i*40, 400 + C(4*t+(i*3))*100, 27, 200)
  }

Dec 27 2017 8:50 PM UTC

}// 125/140

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Xen

remix of d/3713 by u/bobdunn

function u(t) {

for(c.width|=Y=i=300;i--;x.fillStyle=R(Z=C(i+t*4)*Y,Z*S(t),5-Z,.6))x.fillRect(i*9,Y+C(3*t+(i*2))*99,39,Y)

Dec 27 2017 6:40 PM UTC

}// 105/140

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had to have a play, quick test... shoutz to bobdunn

Show more comments…
u/karan

Hot damn! that looks fancy! and i thought i was doing something great by just adding random colour :D
u/Xen

always save your code to one side before posting, play with it to see if you can squeeze something extra out.
u/karan

Helpful tips! Is there an IRC or some messaging service to hang out with fellow dwitters?
u/Xen

https://discord.gg/emHe6cP
u/bobdunn

I was thinking about adding color. I like what you did here!
u/Xen

thanks :-)

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karan

function u(t) {

w=1920;for(i=1;i<5;i++){x.fillStyle=R(45+C(t)*50,35+S(t)*50,20+S(t)*50);x.fillRect((w/2-i*80)+350*C(t)+50,t*40+10*S(w),80*C(w),100*C(w))}

Dec 27 2017 12:25 PM UTC

}// 137/140

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nystrand

function u(t) {

for(i=c.width|=g=(o,a=n=7,b=8,z)=>--n?g(n>5?i*n:t/n,b*C(o)-a*S(o),z,a*C(o)+b*S(o)):x.lineTo(a*(z+=40)+960,b*z+540);i--;g(i&t/2));x.stroke()

Dec 27 2017 12:24 PM UTC

}// 139/140

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u/jaemiejaemie

reminds me of older windows screensavers, really nice!
u/iverjo

How was this made?

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bobdunn

function u(t) {

c.width=1920; /* clear the canvas */
  for(i=0;i<64;i++)
  x.fillRect(i*30, 400 + C(4*t+(i*3))*100, 27, 200)

Dec 26 2017 10:16 PM UTC

}// 108/140

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Show more comments…
u/sigveseb

This is one of the coolest takes on the starter dweet I've seen in a while!
u/Xen

impressive
u/j0bit

Hypnotic
u/darrencearnaigh

Aye, that implied double-helix in the movement is pretty cool.
u/hope4tg

I like how if you stare at it long enough, you see shifting concave diamonds. Very cool!
u/3yanlis1bos

Mental
u/Xen

done you a remix https://www.dwitter.net/d/4101
u/hoppla1232

If you look at the dark spots, it moves faster
u/atgz

this makes my brain go mushy

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sortie

function u(t) {

eval(c.id+=String.fromCharCode((Q="㬻籴硼琮慲獮慬整㤨〶㔬〴㬩⹸潦瑮✽攵⁭❁栻ㄽ㜲㔮砻昮汩卬祴敬刽䌨琨⨩⭨ⱨ⡓⨵⥴株栫匬㌨琪⨩⭨⥨砻昮汩呬硥⡴⹣摩㌬〰匪㌨琪Ⱙ㔲⨰⡃⨷⥴㬩⹸潲慴整ㄨⵅ⤲⼯".charCodeAt(t*60))%256,Q>>8))

Mar 2 2017 10:03 PM UTC

}// 140/140

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I'd like to announce the dwitter character limit has been increased to 146 characters.

Show more comments…
u/iverjo

Details please?
u/sigveseb

kinda dangerous though, you might run into a partial dweet that forces an endless loop
u/sortie

We're restricted to 140 unicode characters, not 140 bytes. I exploited UTF-16 to encode two ascii values per UTF-16 codepoint. Since the overhead is less than 70 bytes, I can exceed the 140 ascii char limit. The characters 㬻 and ⼯ are fun exercises for the reader.
u/sortie

The decoder is quite golfed and exploits some fun facts. The payload itself is a quine exploiting decoder side effects.
u/sortie

sigveseb, admittedly I didn't think of that case. Partial dweet initial loops are easily fixed wrapping the payload in {} (or any other syntax error) at the cost of 1.5 codepoints (㬻 has one free byte).
u/donbright

wow!

You've reached the end.

dwitter.net | karan (516)