Top #barcode dweets

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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joeytwiddle

remix of d/3598 by u/joeytwiddle

function u(t) {

r=Math.random;if(t%2<.7){c.width=199
for(X=55;X<137;X++)~X&64||r()<.5?x.fillRect(X,9,1,78):0
x.fillText(Object.keys(this)[r()*215|0],55,99)}

Jan 22 2022 2:11 PM UTC

}// 140/140

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Little #barcode remix

u/joeytwiddle

2024/11/18: Object.keys(window).length === 256 on Firefox (249 in Chrome)

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jylikangas

function u(t) {

for(c.width=j=-1;++j<99;x.fillText(T=!j||3/7,-41,48))for(i=9;i--;x.fillRect(i*8+j+(i&2),j,W=!j*300|4+i/8,W*9))x.fillStyle=R(v=j*999,v,v,T/j)

May 1 2018 10:08 AM UTC

}// 140/140

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Capitalism poster tribute

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joeytwiddle

function u(t) {

r=Math.random;if(r()<.04){c.width=199
for(i=X=25;i--;X+=w)x.fillRect(X+=2,9,w=1+6*r()|0,78)
x.fillText(Object.keys(this)[r()*215|0],27,99)}

Dec 3 2017 5:20 PM UTC

}// 139/140

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Inspired by zoulei and xscreensaver

u/joeytwiddle

Minor improvement: if(t%1<.3)
u/joeytwiddle

Improved bars: for(i=X=25;X<170;X++)r()<.6&&x.fillRect(X,9,1,78)
u/joeytwiddle

#barcode

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marc8

function u(t) {

s="Dwitter barcode generator!"
c.width|=i=0
for(q of s){for(y of q.charCodeAt().toString(2)){x.fillRect(400+i,400,y*4,250)
i+=4}i+=8}

Jul 6 2018 9:31 PM UTC

}// 133/140

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u/aleamb

#barcode
u/marc8

Generate your own code!
u/katkip

Wow that's crazy

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aemkei

function u(t) {

c.width=400;for(o=i=0;i<7;i++,o++)for(k=7;k--;o++)+([18,6,30,24,28,0,52,40,48,34][(~(t*9)+'')[i]]+70).toString(2)[k]&&x.fillRect(5*o,9,5,99)

Sep 19 2023 9:19 PM UTC

}// 140/140

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#barcode #ean

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New_Core

function u(t) {

t<2?x.fillRect(t*60*6+600,400,6,~~(Math.random()*2)*200):0
//got my barcode app to read some numbers once =)

Jun 20 2019 9:41 AM UTC

}// 108/140

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u/13thptr

#barcode

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SockTaters

function u(t) {

x.fillText(R,9,t)

Nov 11 2024 10:10 AM UTC

}// 17/140

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#barcode #waitforit

Show more comments…
u/SockTaters

Might have been done before, but I didn't see anything under the barcode hashtag. Between u, t, c, x, S/C/T, and R, R looks the best to me.
u/tomxor

Damn that's small. For some reason this elicits the sound of a dot matrix printer in my head.
u/KilledByAPixel

nice! there are a few other barcodes, this is my fav: https://www.dwitter.net/d/7868
u/fentbiggesthater

ive been waiting for an hour, what happens?
u/SockTaters

u/fentbiggesthater it draws a barcode starting in the top left corner. Should be visible after a few seconds
u/SockTaters

Also I meant to say that I didn't see *this method* for making a barcode before, not that I'm the first to make a barcode. I could've worded that better 😅

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S.T.L.K.R.

function u(t) {

r=Math.random()
c.onclick=e=>(a=r*2+t,c.width=1920)
if(t<a)for(i=9;i--;x.fillRect(520+r*800,400,5,400));

Jun 4 2018 1:06 AM UTC

}// 104/140

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Click to generate your barcode #interactive

u/S.T.L.K.R.

#Barcode

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dwitter.net | #barcode