Random dweets | Dwitter

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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Current theme challenge: #Food

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ximavus

function u(t) {

z=Math.random
x.fillStyle=R(z()*255,z()*255,z()*255)
x.fillRect(960+S(t)*500,540+C(t)*500,90,90)
x.drawImage(c,99*z()-49,99*z()-49)

Oct 27 2025 9:24 AM UTC

}// 131/140

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Shaking color circle

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Xen

remix of d/17044 by u/katkip

function u(t) {

x.fillStyle=`hsl(${t*=9} 99%50%`
x.fillRect(960+S(t)*t,540+C(t)*t,9,9)

Jan 2 2020 1:56 AM UTC

}// 70/140

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70byte demake

u/pavel

Both this one and the parent are broken in safari, you can't omit the space between saturation and lightness
u/katkip

yep...

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bepisTM

remix of d/6483 by u/bepisTM

function u(t) {

c.width=640,x.font="20px arial"
for(z=i=~t;i<28-z;x[f](s[i++%7],198-w,v))x[f='fillText']((s="dwitter")[(i+3)%7],w=99-66*S(i/3-t),v=(i-t)*15)

Jan 26 2018 3:25 PM UTC

}// 140/140

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i managed to make the text go up too now

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buddybearalex

function u(t) {

c.width = 1920
x.font=75+"px'"
for(j=0;j<100;j++) for(i=0;i<100;i++)
x.fillText('g',S(t+i)*100*j+c.width/2,C(t+i)*100*j+c.height/2)

Sep 1 2024 3:04 AM UTC

}// 131/140

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g carousel

u/gai

g
u/magna

#g

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NiVZ

remix of d/36128 by u/NiVZ

function u(t) {

p='🌞🟠🔘🌍🔴🟤🪐🟢🔵';eval(unescape(escape`𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛀱𩐴𛀱𩐴𚐻𩠽𚁲𛁡𚐽🡛𬠪𠰨𨐩𚰹𝠰𛁲𚡓𚁡𚐫𝐴𜁝𞱦𫱲𚁩🐰𞱩🀹𞱩𚰫𚑻𪠽𩠨𪐪𝠲𛁴𛰸𚠨𜐰𛑩𚐩𞱸𛡦𫱮𭀽𘠵𜁰𮀠𠐢𞱸𛡦𪑬𫁔𩑸𭀨𬀮𬱵𨡳𭁲𪑮𩰨𪐪𜠬𪐪𜠫𜠩𛁪𦰰𧐬𪡛𜑝𚑽`.replace(/u../g,'')))

Aug 22 2026 10:23 AM UTC

}// 135/140

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Thanks to u/cantelope & u/tomxor for their suggestions with compression :)

u/cantelope

<3

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lewdev

remix of d/28586 by u/384.cz

function u(t) {

eval(unescape(escape`䐽∶䘩㔻♀✹⹃⽀❓♍⹗⹓╟♦㍡㩙䍌䍗㠸㡀䉍䅋䌵䔢੆㵟㴾弮捨慲䍯摥䅴⠩੣⹷楤瑨㴹《景爨椽〻䐮汥湧瑨㹩㬩砮汩湥呯⡆⡄孩⬫崩ⴳ㈬䘨䑛椫⭝⤭㌲⤊砮晩汬⠩ਠ`.replace(/u([^D].)/g,'$1%')))

Oct 5 2023 9:08 PM UTC

}// 124/140

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🎃 Jack-o-lantern using 384.cz's Polygon Editor

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BackendForth

remix of d/6196 by u/BackendForth

function u(t) {

t?r-=m:a=Array(w=200)
for(m=1,i=c.width=w;i--;){if(!t)r=9,a[i]=i*i%99
x.fillRect(i,0,1,q=a[i])
if(q>>r>a[i+1]>>r)a.splice(i,2,a[i+1],q),m=0}

Jan 19 2018 3:04 AM UTC

}// 140/140

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u/iverjo

Radix sort

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remix of d/35747 by u/taupelink

function u(t) {

eval(unescape(escape`景爨椽稽㑥㌻椭ⴻ砮晩汬剥捴⠳㈰⩴Ⱪ⼳ⱺ⬽㤫㤪吨琩⩃⡺⩃⡺⭴⽺⨴⤫椯爩⽃⡴⩺⤯吨稪匨琩⤬⸵⩃⡴⩓⡺⤩⩔⡴⤩⥸⹦楬汓瑹汥㵒⡲㴳㈰⴨稽㤫㜪匨⡺⬲⩓⡺⼲⭴⥞椯稯㘩⼱㈩⤪⨶⼲攴Ⱳ⬸⩺Ⱳ⩺⤠`.replace(/u([^D].)/g,'$1%')))

Jul 12 2026 4:52 AM UTC

}// 140/140

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rodrigo.siqueira

remix of d/14642 by u/rodrigo.siqueira

function u(t) {

A=Z=a=b=t-3;s=180
for(i=1e4;--i;)x.fillStyle=R(a*55,b*20,S(b-a)*99),x.fillRect(850+a*s,350+b*s,.7,.8),
a=1-b+Math.abs(a-S(a+2))/2,
b=A,A=a

Jun 17 2019 3:04 PM UTC

}// 138/140

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Patterns from the Gingerbread Man #attractor

u/Xen

sexy!
u/katkip

Nice #chaos
u/rodrigo.siqueira

#gingerbreadman
u/iverjo

Fascinating!
u/Qwitter

Wow, islands, everywhere

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remix of d/19494 by u/IV

function u(t) {

d=x.getImageData(0,0,w=c.width=256,h=c.height=w/2)
for(i=0;i<h;i++)for(j=0;j<w;j++)d.data[(i*w+j)*4+3]=(i^j%w)*9*t%w
x.putImageData(d,0,0)

Jul 24 2020 7:36 PM UTC

}// 139/140

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xor squares (i^j%w) #xor