Dwitter - javascript demos in 140 characters

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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Axioplase

remix of d/33594 by u/rodrigo.siqueira

function u(t) {

for(i=1e4;i--;){
r=S(i/t)+S(i)
X=Math.abs(T(r))*r*C(k=i/9)*1540
Y=X*C(X)+r*S(k)*1400
Z=r*C(S(i*.1))*6-.2
x.fillRect(960+X/Z,540-Y/Z,.3,t<3)}

Apr 14 2025 3:34 PM UTC

}// 140/140

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The Origin of the World

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KilledByAPixel

function u(t) {

eval(unescape(escape`󩭯󬬨󭼽󨼮󭽩󩍴󪍼󟝩󟝦󟜲󝜵󞽩󛜭󞽸󛭦󪝬󫍔󩝸󭌨󪜪󚬲󛬳󙜹󯌰󛍘󚽓󚌱󝌪󭌫󪜪󪜩󚬨󣝡󭍨󛭨󮝰󫽴󚍘󛝔󛭸󛽡󛍙󛝔󛭹󛽡󚜼󩬿󜜹󞬱󚜬󦜩󚝘󟝩󙜲󜜪󞜹󛍙󟜨󪜯󜬱󯌰󚜪󞜹󛍸󛭦󫽮󭌽󚍃󚍘󛽦󯍙󛽦󚜪󚬹󚬹󚼳󚜫󙽥󫜢󙼬󨜽󪝮󫭥󬭗󪝤󭍨󛽷󒭯󫭭󫽵󬽥󫝯󭭥󟝥󟜾󥌽󩜻`.replace(/u../g,'')))

Apr 13 2025 4:00 AM UTC

}// 140/140

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Macrodata Refinement 🏢 #interactive

u/TGY

Oh, God! A four!

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marquisdegeek

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼👰🐨𭀯𜐥𝐩🠾🠰𒡎🐱𜀰𛑴𛰵🠾🠰𒡐👥🐾𩐫𨀠𨡯𭁴𫁥𙁻𩐽🐱🰧𙰺𙱳𙱽𘁯𩠠𨡥𩑲𨀊𮀮𬱣𨑬𩐨𞐬𞐫𭀥𝐩𒡸𛡦𪑬𫁔𩑸𭀨𣠼𜐿𙰧𞡰🀲🱐𚁎𚐫𚁰🰧𙰺𨀠𫱮𘁴𪁥𘁷𨑬𫁠𚐺𬀾𜰿𤀨𣠭𜐩𞡰🠲🱠𤁡𬱳𘁩𭀠𨑲𫱵𫡤𨀺𙱔𨑫𩐠𫱮𩐠𩁯𭱮𙰬𞐬𞐩`.replace(/u../g,'')))

Apr 13 2025 10:50 AM UTC

}// 140/140

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Bonus: it handles the correct pluralisation of '1', and ends neatly

u/marquisdegeek

#karaoke

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rodrigo.siqueira

remix of d/33587 by u/rodrigo.siqueira

function u(t) {

for(i=1e4;i--;){
r=S(i/t)+S(i/3/t)**5
X=r*C(k=i/9)*1540
Y=r*S(k)*1400
Z=r*C(S(i*.1))*6-.2
x.fillRect(960+X/Z,540-Y/Z,.3,t<3)}

Apr 13 2025 5:01 PM UTC

}// 125/140

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Atomic model

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yokiebob

function u(t) {

t?(w=T<100,C+=w,c.width|=0,x.font="99px Arial",x.fillStyle=w?0:"#f00"):T=C=0,document.onkeyup=a=>T++
x[l="fillText"](T,0,99)
x[l](C,0,200)

Apr 13 2025 12:20 AM UTC

}// 138/140

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hit 100 keys #interactive

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rodrigo.siqueira

remix of d/33585 by u/rodrigo.siqueira

function u(t) {

for(i=2e4;i--;x.fillRect(960+X/Z,540-Y/Z,.1,t<4))r=S(i/2/t),X=r*C(k=i/1.9/t)*640,Y=r*S(k)*640,Z=r*S(+i/t+i*S(i%2))+1

Apr 11 2025 1:03 PM UTC

}// 116/140

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Entanglement fields

u/UEZ

#sunflower

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rodrigo.siqueira

remix of d/33580 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(i=1e4;i--;x.fillRect(960+X/Z,560-Y/Z,.1,t<3))r=S(i*i/t)/S(i*i),X=r*S(k=i/7)*840,Y=r*C(k)*830,Z=r*C(S(i/4))*4-.4

Apr 10 2025 6:21 PM UTC

}// 140/140

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Continuous 7-fold effect

u/cantelope

reminiscent of the "Five Point Palm Exploding Heart Technique"

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danny@hille.dk

remix of d/33574 by u/danny@hille.dk

function u(t) {

for(w=i=1080;i--;)(S(i)*w|0)+8*t&1&&(x[r='fillRect'](m=i*30+t*120-w,t*120,4,4),x[r](m,w-t*120,4,4))

Apr 9 2025 3:01 PM UTC

}// 99/140

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Hitomezashi Stitch Remix

u/cantelope

wow
u/danny@hille.dk

94b -> for(w=i=1080;i--;T=t*120)(S(i)*w|0)+8*t&1&&(x[r='fillRect'](m=i*30+T-w,T,4,4),x[r](m,w-T,4,4))

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rodrigo.siqueira

remix of d/33577 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(i=1e4;i--;){
r=S(i/t)**-2
X=r*S(k=i/7)*880
Y=r*C(k)*860
Z=r*C(S(i*.2))*4-.4
x.fillRect(960+X/Z,540-Y/Z,.1,t<3)}

Apr 10 2025 1:51 PM UTC

}// 140/140

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14-fold geometry

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LimeLaser

function u(t) {

r=300*S(t)
for(i=6;i--;){x.fillStyle=`HSL(${60*i+r},99%,50%)`
x.fillRect(960+r*C(t+i)-4,540-r*S(t+i),8,8)}
x.drawImage(c,-16,-9,1952,1098)

Apr 11 2025 2:04 AM UTC

}// 138/140

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Color Spiral