Dweets awesomed by u/baon

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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taupelink

remix of d/35551 by u/taupelink

function u(t) {

for(i=z=1080;i--;x.fillRect(320*t,i,6,z*=1+C(i/105/p)*C(t/p)))x.fillStyle=`hsl(${6**(z&=7)},25%,${300/(z+=3-(p=(-.7)**z)*C(t+i/210*p))}%,.3`

Jun 9 2026 7:56 PM UTC

}// 140/140

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d/35567

u/Axioplase

Incredible. Do you have any write-ups about how you generate these sceneries?
u/taupelink

Not really, sorry! The big three words are Trial And Error
u/taupelink

(And thank you!)
u/joeytwiddle

#scene #generative
u/tomxor

Amazing

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taupelink

remix of d/35301 by u/taupelink

function u(t) {

z=t?z+C(z/6):1;for(i=6e3;i--;x.fillRect(i/3,60*t,(z%=12)+1,z/=.8+S(t*z+t/8)/4))x.fillStyle=(z+=S(i/2e3-9/z))&6?z&3?'#0136':'#EEE1':'#9FE3'

May 6 2026 4:26 AM UTC

}// 138/140

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d/35344

u/Axioplase

Nice. It looks like a forest with lakes, seen from a plane!
u/KilledByAPixel

that's cool, i see it! 🛩️
u/magna

WOW
u/magna

I see a city with buildings and streets
u/aleamb

I see a city too. Amazing.

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rodrigo.siqueira

remix of d/35223 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert()`;𝕏=X=Y=t
for(i=4e4;i--;𝕏=X,x.fillRect(990+Y*1240,X*1220-Y*99+300,1,.1))X=S(X*X-Y*Y+.344),Y=C(2*𝕏*Y+1.26+t*t*t/39)

Apr 12 2026 2:20 PM UTC

}// 138/140

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Patterns of Emergence #waitforit

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mark1626

remix of d/8393 by u/firegodjr

function u(t) {

for(c.width|=i=5e2;i--;x.beginPath())x.globalAlpha=.8,x.arc(S(t*3+i/150)*i+960,C(t+i/40)*i+500,i/9+2,0,10),x.fill()

Apr 10 2026 10:27 AM UTC

}// 115/140

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Snake

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d0n.key

function u(t) {

c.width*=1
for(i=0;i<200;i++)r=40*(4+2*S(4*t+i*.05)),x.beginPath(),x.arc(i*10,540+S(3*t+i*0.3)*30,r,0,9),x.fillStyle=R(r,0,r/2),x.fill()

Apr 9 2026 12:20 PM UTC

}// 136/140

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u/joeytwiddle

:

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rodrigo.siqueira

remix of d/35175 by u/rodrigo.siqueira

function u(t) {

t?c.style.filter=`invert(`:𝕏=X=Y=0
for(i=5e4;i--;𝕏=X,x.fillRect(Y*2600,410-X*2e3,t<2,.1))
X=S(X*X-Y*Y),
Y=-C(2*𝕏*Y+1.93)-T(i+t)/(6+i%12)

Apr 7 2026 2:38 PM UTC

}// 136/140

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Fuzzy interaction

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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/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

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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.

dwitter.net | baon (15315)