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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Salko75

remix of d/25811 by u/Salko75

function u(t) {

c.width=1920
for(i=0;i<22;i++){
x.font=`${T(t/2)*t}px Tahoma MS`
x.fillText('WAKE UP', (S(t*i)*t)*Math.random()*C(i)*10000, 50*i)}

Jul 17 2022 10:09 AM UTC

}// 130/140

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taupelink

remix of d/36411 by u/taupelink

function u(t) {

eval(unescape(escape`昽⡵Ɱ㴲⤽㹮㽍慴栮浡砨渪昨甭㈪眬渭ㄩⱮ⭦⡵⵩Ɱⴱ⤬昨㐪眬渭ㄩ⽮⤺㌲⩓⡵⤪⨲㭦潲⡩㴳攴㭩ⴭ㭸⹦楬汒散琨㤶〫爪䌨椩ⰵ㐰⭲⩓⡩⤬眽㌪琪⨨⸵⭴⨪⵴⼴⤬昨眫㘪椩⭦⡷ⴴ⩩⤦㈴㼰㩷⤩爽㤰⬱㠰⩴`.replace(/u([^D].)/g,'$1%')))

Oct 5 2026 12:45 AM UTC

}// 140/140

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d/36416

u/taupelink

NB These may look a little better on iOS/Safari than on Windows/Chrome.

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Xen

remix of d/9008 by u/Xen

function u(t) {

with(x)for(Z=9,i=32;i--;fill(arc(960,540,Z+i*Z,z=i+t,z+2)),stroke())beginPath(fillStyle=`hsl(${i*i},90%,30%,.01`),strokeRect(960,830,9,999)

Jan 9 2021 11:42 PM UTC

}// 139/140

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#candy

u/tomxor

:P cute!

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rodrigo.siqueira

remix of d/35856 by u/taupelink

function u(t) {

c.style.filter=`invert(`
for(i=r=h=1e4;i--;x.fillRect(960+60*r*C(h),540+60*r*S(h),r/99*(t<3),
4*r<<1.2*C(h*18)&3))[r,h]=[4+4*C(i*t),T(i/t)]

Jul 12 2026 11:38 PM UTC

}// 139/140

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18-pieces circle

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snydej

function u(t) {

for(c.height|=i=40;i--;x.fillText('❤️',-7,3))x.setTransform(s=(i+t+1)%19|t%3>1?15:19-(8*t%4-2)**2,0,0,s,i%8*240+120,i%10*100+100)

Feb 14 2018 2:50 PM UTC

}// 129/140

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pavel

function u(t) {

for(let i=1920,f=(x,n=420,a=0,b=0)=>a*a+b*b<n?f(x,n-1,a*a-b*b+x,2*a*b+.1133-t/4615):n/420;i--;)x.fillRect(i,180*t,f(i/8e5-.7467),3)

Apr 18 2020 5:59 AM UTC

}// 131/140

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(X=-0.7453, Y=0.1127, R=6.5e-4) section of the #mandelbrot set

u/pavel

This version draws 1x3 pixels to speed up rendering. for(let i=2e3,f=(x,n=420,a=0,b=0)=>a*a+b*b<n?f(x,n-1,a*a-b*b+x,2*a*b+.1133-t/13845):n/420;i--;)x.fillRect(i,60*t,s=f(i/8e5-.7467),s) looks better in fullscreen but is 3x as slow.
u/pavel

let and the automatic scoping of args in f makes this _really_ quick. I can increase the loop to 4e3 iterations and still have 60fps on my machine. Would be interesting to speed this up by rendering multiple rows per frame.
u/katkip

all dweets made by u/pavel are genius
u/Xen

godlike!
u/Qwitter

agreed !!!!

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Agnes

remix of d/24213 by u/magna

function u(t) {

eval(unescape(escape`𩡯𬠨𬠽𣑡𭁨𛡲𨑮𩁯𫐬𨰮𫱮𨱬𪑣𪰽𩐽🡍𚰫𛁭👍👴🱍𞠱𞱭𛐭𞱸𛡦𪑬𫁓𭁹𫁥🐢𘰢𚱪𛁸𛡦𪑬𫁒𩑣𭀨𩐪𝀸𜀬𩠪𝀸𜠬𚰫𬰬𬰩𚑦𫱲𚁥👲𚁦👲𚁡👢🐰𚐪𞐯𝀩𚠴𛁘👥𛐲𛠸𛁙👦𛐹𛰸𛁪🐹𞐹𞱡𚡡𚱢𚡢🀽𝀦𙡪𛐭𞱳🐹𞐹𛱴𚑛𨐬𨡝👛𨐪𨐭𨠪𨠫𦀬𜠪𨐪𨠫𦑝`.replace(/u../g,'')))

Oct 24 2021 11:14 AM UTC

}// 140/140

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#interactive version of Magna's mandelbrot renderer: click to make it do one more rectangle per frame

u/Agnes

Uncompressed: for(r=Math.random,c.onclick=e=>M++,m=M=t?M:1;m--;x.fillStyle="#"+j,x.fillRect(e*480,f*482,++s,s))for(e=r(f=r(a=b=0)*9/4)*4,X=e-2.8,Y=f-9/8,j=999;a*a+b*b<=4&&j--;s=999/t)[a,b]=[a*a-b*b+X,2*a*b+Y]
u/Agnes

If it's not clear, spam click to make it speed up a bunch until your computer can't handle it anymore
u/Xen

love it!

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New_Core

function u(t) {

with(x)for(c.width|=j=9;j--;beginPath(fill()))for(i=4;i--;arc(960,540,99+j*25*C(t+i)+j*25,a=(t+i*1.57)-t+S(t),a+.5*C(t)+1))fillStyle="#f155"

Jan 19 2024 3:29 PM UTC

}// 140/140

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Smiley1000

function u(t) {

c.width=c.width
z=50
x.font=z+"px Consolas"
s="█ "+Date().toLocaleString()+" █"
x.fillText(s,(1920-s.length*z*1126/2048)/2,(1080+z)/2)

Feb 20 2022 7:40 PM UTC

}// 134/140

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Current date

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rodrigo.siqueira

remix of d/21272 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
x.globalCompositeOperation='xor'
x.fillRect(K=t*240,900.18-S(t)*99.3,1,2)
x.drawImage(c,1,-1)
x.drawImage(c,-K,-K)

Jan 16 2021 12:31 AM UTC

}// 139/140

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Sierpinski paper wave #fractal #sierpinski

u/Qwitter

thats my kind of book
u/Xen

love it!