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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lonestar108

function u(t) {

p=S(t)*99,q=p*9;for(i=5e3;i--;){P=p;p+=C(4*(q+p))/5,q+=P;q%=π=Math.PI,p%=π;x.fillStyle=R(i/25,t,p+i,0.5);x.fillRect(q*695,p*400,1,1-(t/10))}

Oct 25 2022 7:51 PM UTC

}// 140/140

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u/KilledByAPixel

https://www.dwitter.net/d/14490

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katkip

function u(t) {

r=z=>Math.random``<.5?1:-1;if(!t)s=[960,540];x.fillRect(s[0],s[1],30,30);s[0]+=15*r``;s[1]+=15*r``;x.globalCompositeOperation=`xor`

Aug 29 2018 6:39 PM UTC

}// 131/140

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Shorter #ant

u/f8f82804

114: t||(w=960,h=540,r=_=>Math.random()<.5?1:-1,x.globalCompositeOperation='xor');x.fillRect(w+=15*r(),h+=15*r(),30,30)

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taupelink

remix of d/35464 by u/taupelink

function u(t) {

eval(unescape(escape`孤ⱥⱳ崽琿猼搿孤ⱥⱴⵥ崺孤⨲Ɽ⭥ⰰ崺嬱ⰰⰰ崻景爨椽稽㙥㌯摼〻搼㤦♩ⴭ㭸⹦楬汒散琨椯㌪搬猪㄰㠰⽤ⱺ⨽㌭猯搬㈰⤩砮晩汬却祬攽恨獬⠤笨稦㴶⤪⩤紬㔵┬⑻㠵ⴷ⨨稫㵳⽤⨳⩃⡩⼹㐵⩤⭺⤩紥Ⱞ㉠`.replace(/u([^D].)/g,'$1%')))

Jun 2 2026 5:24 AM UTC

}// 140/140

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d/35498

u/taupelink

4 layers, 1/2/4/8 seconds respectively

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BriSeven

function u(t) {

r=Math.random;for(i=0;i<1080;i++)
x.fillStyle=R((d=119*(i/68|0))%256,d/1.4%256,d/7%256),
x.fillRect((r()*1080&i)-(i/2)+1920/2,i*.9,2,2)

Dec 22 2016 3:00 AM UTC

}// 135/140

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In case you're looking at this and wondering where the Sierpinsky pattern is coming from, it's here: &i

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kmoseni

function u(t) {

p=6.28*t**3;A=3600/p**0.2;
x.fillRect(990+S(t)*A,520+C(t)*A,10*S(p),10*C(p))

May 24 2021 6:38 PM UTC

}// 76/140

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My first dweet: a glitchy spiral! Very excited to move from lurker to contributor amongst all of you incredible coders and artists here on Dwitter!

Show more comments…
u/Xen

Welcome to the dwitter family!
u/magna

Nice style!
u/magna

Here's some quick golfing down to 68: p=7*t**3;A=3e3/p**.2;x.fillRect(960+S(t)*A,540+C(t)*A,9*S(p),9*C(p))
u/Xen

A=3e3/(t**3)**.2;x.fillRect(990+S(t)*A,520+C(t)*A,9*S(A),9*C(A))
u/kmoseni

Thanks, u/Xen and u/magna! Of the two suggestions, I'll have to side with u/Magna's for golfing it down while maintaining the glitchy-ness!
u/aleamb

#firstdweet

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Xen

remix of d/16351 by u/KilledByAPixel

function u(t) {

for(c.width=i=99;a=i-->>3;x.ellipse(50,9+a%2*31,22,9,0,q=t-(i-a)*1.563%25,q))x.stroke()

Oct 28 2019 4:59 PM UTC

}// 87/140

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slight golf

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anotherkitten

function u(t) {

t||(a=b=0)
with(x)beginPath(),moveTo(a,b),arcTo(a,b=50*T(t),a=50*T(t**2),b,t%12*50),stroke(),rotate(4),drawImage(c,0,0);t%12<1&&(c.width|=0)

Sep 30 2018 1:11 AM UTC

}// 140/140

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spikes from the shadow realm

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baon

remix of d/29277 by u/baon

function u(t) {

for(c.width|=0,b=i=540;i--;) a=3.14*2/i, A=(b-i)*a**.5,
x.strokeRect(960-i*2-A*C(a+t), 540-i-A*S(a+t), i*4, i*2)

Jan 8 2024 7:33 AM UTC

}// 112/140

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racing :)

u/Joachim

Good job! Use this for better motion —> x.strokeRect(960-i*2-A*C(a+t)+S(b/i+t*30)*i/2,540-i-A*S(a+t),i*4,i*2)
u/baon

@Joachim wow, it's crazy 😂
u/Joachim

u/baon lol maybe that was a bit too fast xD
u/lewdev

u/Joachim, Not better motion, but more a more intense experience. 🤣

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KilledByAPixel

remix of d/19550 by u/tomxor

function u(t) {

for(c.width=w=127,i=7e3;i--;t?p&T[r=i+w+r%3]<1&&--T[i]&++T[r]:T[i]=r)p=T[i],x.fillRect(X=i&w,Y=i>>7,T[S(t*t*w)*w|0]=1,p/3),r=i*t^Y/14&X/9

Dec 21 2020 5:43 PM UTC

}// 137/140

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Snowed In

Show more comments…
u/DataMeta

super cool
u/KilledByAPixel

#snowflake
u/katkip

#powder physics type
u/Odog8

how does this work!?
u/KilledByAPixel

it is a cellular automata, each frame it tires to move the snow down and left or right randomly if the target cell is empty
u/Odog8

oh wow
u/tomxor

Wow nice! it's great how an effect can take on new meaning when finding a different way to frame it.
u/Qwitter

cool

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Vertfromage

function u(t) {

w=450;for(i=0;i<8;i++)x.fillStyle=R(99-t*i,t*i),
x.fillRect(w*2+S(t)*30*i,w+C(t)*30*i,30,10),
x.fillRect(w*2+S(t)*30*i*3,w+C(t)*10*i+i,50,5)

Apr 4 2022 10:27 PM UTC

}// 140/140

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Colorful spinning planet