Dweets awesomed by u/jellyedwards

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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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/34895 by u/rodrigo.siqueira

function u(t) {

eval(unescape(escape`𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛀲𩐳𛀲𩐳𚐊𩡯𬠨𪐽𜱥𜰻𪐭𛐻𚑘👩𙐶𝐪𜰰𛁙👩𛰶𝐪𜰰𛑘𛰶𝐬𮀮𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮰱𞀰𚰳𜀪𤰨𭀩𯐬𝐰𙐬𙁻𤰨𪐪𚠳𚱴𚐪𚠳𜠪𝰰𚰷𝐭𚀨𦀭𞐶𜀩𚠪𜠫𚁙𛐵𝀰𚐪𚠲𚐯𜐵𜀰𯐥𚑠𛁸𛡦𪑬𫁒𩑣𭀨𦀬𦐬𜠵𛀲𝐩`.replace(/u../g,'')))

Feb 23 2026 5:50 PM UTC

}// 131/140

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Pixel club globe light

u/ximavus

ahhh it changes colors like prismarine blocks in minecraft

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rodrigo.siqueira

remix of d/34874 by u/rodrigo.siqueira

function u(t) {

c.style.filter='invert()'
for(i=836;i--;x.fillRect(i%38*50.4+5,(i/38|0)*51.5+2,w=45,w))k=S(i**3+t)**33*90+90,x.fillStyle=`hsl(30,50%,${k}%)`

Feb 10 2026 2:26 PM UTC

}// 140/140

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Pool of Blue Dots

u/cantelope

this is nice
u/tor020

conway game of life thing
u/aleamb

beautiful

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rodrigo.siqueira

remix of d/34847 by u/rodrigo.siqueira

function u(t) {

c.style.filter='invert('
for(i=3e4;i--;x.fillRect(940+X*15,480-Y*62,t<2.2,.1))
F=i%(2+40/t),X=4*F*S(k=i%7?i*i:~(i/t)%44),Y=F*C(k)/2-20/(F+1)

Jan 27 2026 12:37 PM UTC

}// 140/140

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Gravity grid #spacetime

u/Ohead

I didn't know the browser automatically finishes CSS function calls that are left unclosed!

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KilledByAPixel

remix of d/34793 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`󩭯󬬨󨼮󭽩󩍴󪌦󟝩󟜶󜬷󜬻󪜭󛜻󩌽󣝡󭍨󛭭󪝮󚌨󦜽󪜯󜜸󜌭󜜷󚜪󚬲󛌨󦌪󛬵󛜱󞌩󚬪󜬩󛍸󛭦󪝬󫍓󭍹󫍥󟝘󟽤󟌵󟼧󘽅󜬳󙼺󩌼󜬴󟼧󘽦󩭦󙼺󙼣󜌵󞜧󞬧󘼵󝜵󙼬󮌮󩭩󫍬󤭥󨽴󚌳󞜫󦌯󜬫󦌯󝌸󚭃󚍘󛼸󛝩󛼸󜌰󛝴󚬶󚜬󜼰󚽙󚽘󛼱󜬪󤼨󦌯󜜶󛝴󚜬󜬬󪜿󛬳󞬹󞜩󚝘󟝩󙜹󞜻`.replace(/u../g,'')))

Jan 21 2026 4:42 PM UTC

}// 140/140

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Iceland 🇮🇸 #flag

u/ximavus

I'm still amazed for how this is possible

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DazeWare

remix of d/34779 by u/DazeWare

function u(t) {

c.width|=c.style.filter='invert('
for(i=1e4;i--;x.fillRect(960+X*40,540+Y*40,3,t))
F=i%T(i),
X=F*S(v=i/8+t/2)+4*S(i+t),Y=F*T(v)-t*T(i/4-t)

Jan 19 2026 2:27 PM UTC

}// 138/140

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u/ximavus

like me pouring peanut butter on my sandwich

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rodrigo.siqueira

remix of d/34749 by u/rodrigo.siqueira

function u(t) {

c.width|=c.style.filter='invert('
for(i=1e4;i--;x.fillRect(960+X*40,540+Y*40,3,3))
F=i%T(i),
X=F*S(v=i/8+t/2)+4*S(i/2),Y=F*C(v)-4*C(i/4-t)

Jan 16 2026 8:14 AM UTC

}// 138/140

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Orbital

u/ximavus

#cobweb
u/joeytwiddle

How I feel after 1 beer too many

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rodrigo.siqueira

remix of d/34746 by u/rodrigo.siqueira

function u(t) {

c.width|=c.style.filter='invert()'
for(i=1e4;i--;x.fillRect(960+X*120,540+Y*120,3,3))
O=t/2,F=i**.9%10,X=F*S(v=i/2+O)-S(i+O),Y=F*C(v)+C(i-O)

Jan 15 2026 4:08 PM UTC

}// 140/140

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Cosmic funnel #illusion

u/ximavus

this is a triangular funnel? #illusionfunnel

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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

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

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rodrigo.siqueira

remix of d/21345 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=g=>(1+t)*i*g(i*i)*g(i/t)**.01;i--;x.fillRect(950+f(C),99+f(S)+t*i,8/t,9/t))x.fillStyle=`hsl(${250+i/7},80%,${S(i/1e5+t)*99}%,.2`

Dec 31 2025 2:30 PM UTC

}// 140/140

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#fireworks 2026

u/ximavus

happy new years! its still 2025 here btw 7PM
u/cantelope

#firework (singular)

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