Dweets awesomed by u/camel_case

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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cantelope

function u(t) {

eval(unescape(escape`𩡯𬠨𡠽𫠽🡸𛡦𪑬𫁒𩑣𭀨𞐶𜀫𨐬𪀫𨠬𞐬𞐩𛁨🐵𝀰𛁩👣𛡷𪑤𭁨𯀽𜀻𪐭𛐻𡠨𨐽𦀬𨠽𦐩𚑻𩡯𬠨𦀽𤰨𪐩𚠨𫀽𜐵𜀩𛁙👃𚁩𚐪𫀬𩀽𜀬𫐽𜰻𫐭𛐻𨠽𠰨𬐩𚡬𛁤👍𨑴𪀮𪁹𬁯𭀨𩐽𨐭𦀬𩠽𨠭𦐩𛰸𛁘𛐽𩐪𚁶🐹𛱤𚐬𡠨𦐭👦𚡶𚐩𨐽𤰨𬐽𜠪𫐩𚠨𫀽𪀪𠰨𭀫𫐩𚑽`.replace(/u../g,'')))

Mar 8 2026 10:07 PM UTC

}// 140/140

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repulsors and blobbo

u/ximavus

cant understand the code I see there's hypot tho so its for curving I guess
u/cantelope

blobbo is a circle of rectangles, pushed a distance away from each point, divided by the distance to each point
u/ximavus

thanks for the simplification now I understand it :)

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KilledByAPixel

remix of d/35006 by u/tomxor

function u(t) {

for(j of Date(c.width|=X=9).slice(16,24))for(X+=4,i=15;i--;)'筯璓珧秧䧭秏篏䤧篯积А'.charCodeAt(j<=9?j:10)&1<<i&&x.fillRect(X+i%3<<5,15+i/3<<5,32,32)

Mar 7 2026 9:03 PM UTC

}// 138/140

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Digital #Clock 🕰️

u/NiVZ

Wow! I had this in mind when I posted my sweet but had no idea how to pull it off. Well done 👏
u/KilledByAPixel

thanks for the inspiration!

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rodrigo.siqueira

remix of d/35002 by u/rodrigo.siqueira

function u(t) {

for(a=b=t,i=4e4;i--;b-=S(b/4)-C(a*(t>.3||4)),a=(i/b&i%4)/3-b*a/4)x.fillRect(a*1e3+650,1200-b*244,.3,t<1)

Mar 5 2026 9:21 PM UTC

}// 104/140

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Crops under a cloudy sky 🌥️🌾

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rodrigo.siqueira

function u(t) {

B='💥';eval(unescape(escape`𭀼𜰿𚁫🐳𜠰𚡴𛁳👴𚠲𛁷👴𚡫𛰳𛐷𜀩𞠨𭰽𜐷𝐰𛁫🐭𭰬𬰽𜠵𜀩𞱦𫱲𚁩🐲𩐳𛁺👤🐰𛁹🐹𜰰𞱩𛐭𞱸𛡦𫱮𭀽𨀤𮱳𯑥𫐧𨀩𮐫👃𚁤𚰽𥀨𪐩𚐪𝀬𮀮𩡩𫁬𤡥𨱴𚁺𚰽𠰨𩀩𚰲𚱔𚁴𚐯𜰰𛁹𚱴𚠷𜀬𛠸𛁴🀱𛠶𚐻𮀮𩡩𫁬𥁥𮁴𚁂𛁫𛁷)`.replace(/u../g,"")))

Mar 3 2026 1:46 PM UTC

}// 136/140

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Under attack

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camel_case

remix of d/34954 by u/camel_case

function u(t) {

a=w**2-h**2+i
h=2*w*h+j
w=a
x.lineTo(960+w*700,400+h*600)
x.stroke()
}
c.width|=0
var w,h,i,j
w=h=0
i=.37599
j=.2
{

Mar 2 2026 1:24 PM UTC

}// 115/140

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0.37599 + i/5 is not quite in the Mandelbrot set

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camel_case

function u(t) {

a=w**2-h**2+i
h=2*w*h+j
w=a
x.lineTo(960+w*700,540+h*500)
x.stroke()
}
c.width|=0
var w,h,i,j
w=h=0
i=-.15309
j=1.03972001
{

Mar 2 2026 1:19 PM UTC

}// 124/140

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0.15309 + 1.03972001i is not in the Mandelbrot set

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dee-gomma

remix of d/34948 by u/dee-gomma

function u(t) {

with(x)r=28+~t,i=20*t%20,fill(arc(v=540,v,r*20,i*.31,6.3,moveTo(v,v,beginPath(fillStyle=R(r<2|r<22&(r==13|r==21?i:~i)&&v,r>1&r<22&~i&&v)))))

Mar 2 2026 12:50 AM UTC

}// 140/140

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Dartboard #uncompressed #waitforit

u/cantelope

wow!

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rodrigo.siqueira

remix of d/34949 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(a=b=t,i=8e4;i--;b-=b/4+C(a*3),a+=(i/b&i%2)*3.4-b*S(a*2.2)/8-a*a/4.21)x.fillRect(b*390+1450,1450-a*2e3,.1,t<1)

Mar 1 2026 7:46 PM UTC

}// 138/140

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The ammonite shell #ammonite

u/cantelope

impressive

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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

function u(t) {

for(c.width%=i=7e3;i--;x.fillRect(X,Y,5,5))
X=S(i)*120*(3+S(t+i))+960,Y=C(i)*370+540,X+=S(Y/60+S(i-t)*2)**3*50,Y+=S(S(i/3-t/6)*X/99+t)**5*50

Feb 28 2026 1:14 PM UTC

}// 140/140

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Strange lines

u/ximavus

#stringtheory also it was posted at 3:14 nice

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