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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iverjo

remix of d/286 by u/iverjo

function u(t) {

t=t%4;if(t<.1)r=X=Y=0,W=c.width=960,H=540;for(i=W*4;i--;)x.fillRect(X=(X+S(r+=.5-Math.random())%W+W)%W,Y=(Y+C(r)%H+H)%H,A=5/(1+t*9),A)

Jul 21 2016 1:21 PM UTC

}// 134/140

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u/sigveseb

almost looks like a map!
u/joeytwiddle

Whoa! When I was younger I used to have nightmares about this damn thing. I would clean it all away but then it would come creeping back. Weird that you found it in 2016!
u/iverjo

#random

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seiner

function u(t) {

eval(unescape(escape`景爨挮睩摴桞㴰Ⱪ㴱㡥㌻椭ⴻ⥹㵩⼲㜰Ⱬ㴶⩃⡩⼳㌩ⱥ㵹⼸ⴱ㠬搽⡫⩫⭥⩥⤪⨮㔬焽匨礯ㄹ⤪欪⠹⬲⩓⡥⨹ⵤ⨲⭴⤩ⱸ⹦楬汒散琨㄰㄰⬨焫㘶⩃⡤⵴⤩⨴ⰷ㔰⬨焪匨搭琩⭤⨴㈭㜰〩⨲⸴ⰲⰲ⤠`.replace(/u([^D].)/g,'$1%')))

Jun 8 2026 4:15 PM UTC

}// 135/140

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tzador

function u(t) {

o=127462;f=String.fromCodePoint;r="";for(T=0;T<676;T++)s=f(o+T/26|0)+f(o+T%26|0),x.measureText(s).width===13&&t==0?document.write(s):0

Jan 31 2025 10:31 PM UTC

}// 134/140

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All the flags in one dweet #flag #flags

u/lewdev

Is it just me seeing a blank screen?
u/tzador

Are you on Windows by any chance? tried only on mac.
u/tzador

you should see this https://storage.googleapis.com/openscreensho…
u/KilledByAPixel

unfortunatly doesnt work on windows but maybe it will in the next version of windows!
u/cantelope

works on windows 9

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simonharrer

function u(t) {

"Hello World"

Feb 25 2021 12:16 PM UTC

}// 13/140

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u/Xen

Welcome to the dwitter family!

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mattaustin

function u(t) {

};eval=speechSynthesis.speak((new SpeechSynthesisUtterance('This is Max Max Max,Headroom.'))),()=>{

May 20 2020 5:10 AM UTC

}// 99/140

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This is max.

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Tekmap

remix of d/23137 by u/Tekmap

function u(t) {

for(i=1e4*(t<5);i--;x.fillRect(960+260*a,540+260*b,.1,1))
S(r=i*t)>0?(a=T(r*i)*3,b=C(r*t)*2):b=S(a)-(a=S(-b)/2+a/2)/5
x.fillStyle=R(99)

Jun 17 2021 1:43 PM UTC

}// 135/140

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Recursive wave #eye

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rodrigo.siqueira

remix of d/26444 by u/rodrigo.siqueira

function u(t) {

for(m=1200;m--;x.fill(x.stroke()))x.beginPath(x.fillStyle=R(m/t,i=m%90,i+i*S(t),.03)),x.arc(960+m*C(K=m/2-t/30),540+m*S(K),i*C(i+t)+i,0,m)

Nov 6 2022 2:43 PM UTC

}// 138/140

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Spiralines #spiral

u/trondkla

So pretty!

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ms.roboto

function u(t) {

S.call&&(S=[...Array(1920)].map(_=>Math.random()<0.5),Y=-1)
++Y<1080&&(S=S.map((n,i)=>S[i-1]^S[i+1]&&!x.fillRect(i,Y,1,1)))

Oct 16 2018 1:46 PM UTC

}// 123/140

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Rule 90 - Random seed

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rodrigo.siqueira

remix of d/11965 by u/pavel

function u(t) {

for(x.fillRect(0,0,i=3e3,i);Q=S(--i*i);x.clearRect(960+150*(S(b)*4+S(i+t)*Q),540+150*(C(i*i)-(t%4>2?T(b+t):S(b+t))),4,4))b=i%6+t+(t%2>1?0:i)

Jan 28 2019 2:40 PM UTC

}// 140/140

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Torus, spheres, flow and bubbles

Show more comments…
u/rnbw

now THIS is a demo!
u/katkip

Yeah he win
u/13thptr

woah
u/joeytwiddle

Superb! Golf the end with i*(t%2>1) or i*!(t&1)
u/rodrigo.siqueira

Thanks @joeytwiddle for the golf trick. i*(t&1) also works and it's even shorter. And I found that t%4>2?... can be converted to t&2?... It works as a counter to change the function each 2 seconds.
u/yonatan

Also, since T and S take the same arguments (t%4>2?T(b+t):S(b+t)) can be (t&2?T:S)(b+t)
u/lionleaf

Wow! Now we're talking
u/vain

Wow, three fx in this tiny code? Great!

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geeknik

function u(t) {

c.width|=0;for(i=0;i<999;i++)x.fillRect(960+S(i/9+t)*i,540+C(i/9+t)*i,9,9),x.fillStyle=R(i%255,99,S(i+t)*127+128)

Sep 7 2024 10:12 PM UTC

}// 113/140

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"Hypnotic Rainbow Vortex: A mesmerizing spiral of color and motion that draws you into its ever-changing dance. Watch as the pixels swirl and pulse, creating a psychedelic journey through a digital cosmos. It's like peering into the kaleidoscopic dreams of a computer on acid. 🌈🌀✨"