Dweets awesomed by u/poetaster

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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rodrigo.siqueira

remix of d/35007 by u/rodrigo.siqueira

function u(t) {

s='ﯬ빆캾뻈비ƯįɈưƯџ'
eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪁼👦👮🐾𬰮𨱨𨑲𠱯𩁥𠑴𚁴𙐶𚱮𚐬𪰽𪐽𜐲𞀻𪐭𛐻𚑦𫱲𚁪🐲𞰨𩠨𜀩𯁦𚀶𚐼🀱𝠩🠾𪐦𜐦𙡪𛐭𞱸𛡦𪑬𫁒𩑣𭀨𚁪🱩𙐴𞠶𛑩𙐴𚐪𪰫𝐱𜠬𪰫𪰪𪐾🠲𛀱𜠸𛀱𜠸𚐩𨰮𬱴𮑬𩐮𩡩𫁴𩑲🐧𪑮𭡥𬡴𚀧`.replace(/u../g,'')))

Mar 7 2026 3:09 PM UTC

}// 139/140

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Space Invaders Generator 👾#invaders

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Xen

function u(t) {

x.drawImage(c,z=C(t/4),Z=S(t/7))
x.strokeRect(910+455*z,490+245*Z,q=280,q)
x.strokeStyle=`hsl(${t^z*q} 99%10%)`

Mar 7 2026 11:42 AM UTC

}// 111/140

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i've been away for so long :( , quick play.

u/cantelope

wb xen
u/tomxor

me too, wb :)
u/ximavus

hello Xen

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rodrigo.siqueira

remix of d/35006 by u/tomxor

function u(t) {

for(c.width|=s='ﯬ뽂뻈캾뻈비ƯįԯưƯџ',f=n=>s.charCodeAt(t%6+n),i=28;i--;)for(j=2;(f(0)|f(6)<<16)>>i&1&&j--;)x.fillRect((j?i%4:6-i%4)<<6,i<<4,64,64)

Mar 6 2026 11:27 PM UTC

}// 139/140

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Space Invaders 👾#invaders

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rodrigo.siqueira

remix of d/34951 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert()sepia(`
for(a=b=t,i=8e4;i--;b-=S(b/6)+C(a*2.8),a+=S(i/b&i%3)*3-b*S(a*2)/6-a*a/5)x.fillRect(b*240+820,a*1160,.1,t<1)

Mar 5 2026 1:26 AM UTC

}// 139/140

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Spectral Fractal #fractal

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rodrigo.siqueira

remix of d/34961 by u/cantelope

function u(t) {

for(c.width|=0,m=n=32;m--;)for(l=(.5+(t%.3/9+m/n)%1)**n,i=512;i--;x.strokeRect(960+(i%n-15.7)*l,540+((i/n|0)-8.5)*l,W=l/3,W))x.lineWidth=l/n

Mar 3 2026 8:58 PM UTC

}// 140/140

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Through the Squares #zoom #squares #uncompressed

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tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𥁛𜐶𜀰𧐫👓𚁴𚠹𚐬𨰮𭱩𩁴𪀽𭰽𜐲𞀬𪐽𜑥𝀻𪐭𛐻𮀮𩡩𫁬𤡥𨱴𚁩𙑷𛁩🠾𝰬𜐬𜐩𚑕👵𛁵👔𦱩𧐽𥁛𪑝𚰨𠱛𪑝𛑃𦱩𛐱𧐭𤱛𪑝𚱓𦱩𛑷𧐩𛰱𝑼𯀰𛁸𛡦𪑬𫁓𭁹𫁥👒𚀳𜠰𚡍𨑴𪀮𪁹𬁯𭀨𭐪𚁓𦱩𧐽𤱛𪑝𛑔𦱩𚱷𧐫𭑼𯀰𚐬𭐪𚁃𦱩𧐽𠱛𪑝𚱕𛑵𯁼𜀩𚐩`.replace(/u../g,'')))

Mar 1 2026 1:51 AM UTC

}// 140/140

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#FDTD #Electromagnetic Sim - Rendering #Poynting Vector (EM Flux)

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u/tomxor

I don't really understand maxwell equations, I just wanted to see if I could fit an FDTD into a dweet, and the Poynting vector of the EM field flow looks kinda cool.
u/tomxor

It's essentially a 2D sim of a point oscillator in a reflective box (although technically left and right wrap around), it has absolutely no physical equivalence, all parameters are normalised and tuned for visual preference.
u/ximavus

basically waves bouncing in a box? This visualization is really good though
u/cantelope

oh. well if has no physical equivalence then...
u/tomxor

I just meant that it's more abstract, because FDTD is commonly used to simulate a particular thing in real life.
u/ximavus

yeah waves bouncing in a box is the only way I understand it its a lot more complex than that

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rodrigo.siqueira

remix of d/34721 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(𝕏=X=Y=i=4e4;i--;𝕏=X,x.fillRect(Y*1630+960,X*1480,t<2,.1))X=T(X*X-Y*Y)+.3,Y=T(2*𝕏*Y+.1+S(t+i+S(i%2))/2)%.59

Jan 10 2026 2:20 AM UTC

}// 135/140

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Chaos fragmentation #chaos

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u/ximavus

Its like glass shattering. I like it!
u/DataMeta

Dope. Reminds me of a radioisotope cloud chamber
u/vain

Fantastic. That could be a real old photograph of something.
u/joeytwiddle

I think Cthulu's minions are coming through
u/SockTaters

smudgy cloud chamber
u/lewdev

Finally a new front page "top | year" dweet! I personally don't like the default. I think it should be the default for not-logged in users. And logged in users should be able to define which to default to in their user settings.

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Axioplase

function u(t) {

c.width=w=2e3;s=8.5,k=99
for(i=0;i<w;i+=s)for(j=0;j<1080;j+=s)x.fillRect(i,j,s*S(9*C(t)+i/k)+s*S(j/k),s*S(9*S(t)+(i+j)/k)+s*C(2*t+(j-i)/k))

Aug 6 2025 3:23 AM UTC

}// 139/140

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Meshy stuff

u/UEZ

nice - looks like parallax scrolling

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KilledByAPixel

remix of d/33783 by u/KilledByAPixel

function u(t) {

eval(_=unescape(escape`󨼮󭽩󩍴󪍼󟝏󟝯󟜾󮌮󩭩󫍬󥍥󮍴󚍟󦽆󚼫󧜬󦌫󟝃󚍡󚜪󝜬󦜫󟝃󚍡󚼵󚜪󞌩󯌭󛝯󙬦󣼨󫼩󒭦󫽲󚍸󛭳󨽡󫍥󚌹󛍩󟜴󚜻󪜭󛜻󣼨󬬩󚝆󟜰󛍪󟝩󙬲󛍘󟜱󜼰󛍙󟜳󜬭󠼨󭌪󞌩󚬳󛍡󟜲󛍏󚌱󜜫󝜪󛜭󪬩󛍆󟝩󚬹󛍡󟝃󚍢󟝴󚬴󚽩󚬳󚜯󜬭󪬯󜬫󜬬󣼨󬬽󝼫󪬩󛍡󚼽󪬪󠼨󨬭󜬩󚽪`.replace(/u../g,'')))

Aug 5 2025 4:27 AM UTC

}// 140/140

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Running Code 🏃‍♀️

u/zachygreen

flippin nuts how smooth the animation is
u/cantelope

call the men in black
u/KilledByAPixel

#quine
u/ximavus

the code is running away!

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joeytwiddle

remix of d/33932 by u/joeytwiddle

function u(t) {

eval(unescape(escape`景爨砮晩汬剥捴⠰ⰰⱘ㵙㵩㴳攴ⱘ⤻椭ⴻ砮晩汬剥捴⠹㈰⭘⨲㔰ⰵ㐰⭙⨲㔰ⰲⰲ⤩樽椾㸹ⱘ㵃⡡㵙⭪⤫䌨戽堫琯㐫横㜩ⱙ㵓⡡⤫匨戩ⱸ⹦楬汓瑹汥㵠桳污⠤筩㸾㑽ⰹ㤥Ⱔ笵〪℡楽┬⑻椿ㄺ⸲紩怠`.replace(/u([^D].)/g,'$1%')))

Jun 8 2025 2:40 AM UTC

}// 136/140

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Bubble universe colour expansion

u/joeytwiddle

This one is very clear and colourful. Rodrigo's is more aesthetic: d/33917
u/joeytwiddle

Try long plays j=i/t/t|0 and j=i/t/t
u/jellyedwards

Wow looks amazing!
u/rep_movsd

A whole universe! #space #galaxy
u/katkip

Im shocked.

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