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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solendil

function u(t) {

G=(a,b,c)=>{x.fillStyle=`hsl(${a},80%,${b}%,${c}`
x.fill(p=new Path2D,p.arc(1e3,C(t*1.4)*500+500,1e5,t,t+3.14,a))}
G(0,0,.03)
G(t*99,50,.01)

Nov 30 2020 3:58 PM UTC

}// 140/140

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Neon

u/Xen

nice style!
u/MAxSaL

This could have been a Windows XP screen saver.

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rodrigo.siqueira

function u(t) {

c.width=2e3
c.style=`border:3px dotted;transform:rotate(${t**3}deg`
for(i=0;i<9;i++)
x.fillRect(700+i*100+S(t)*800*C(t*2),400,50,200)

Jul 14 2021 4:47 PM UTC

}// 133/140

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#default rotating t**3 degrees

u/rep_movsd

madness
u/davidsover

AAAAAAAAAA

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lewdev

function u(t) {

s=600
c.width=s*3
x.fillStyle="red"
x.translate(s,s)
x.rotate(t)
x.fillRect(-s/2,-s/2,s,s)
x.translate(-s,-s);

Sep 13 2023 10:35 PM UTC

}// 110/140

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🟥 Learning how to rotate a square

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Axioplase

function u(t) {

w=c.width=2e3;h=500,H=1e3
x.fillRect(W=w/3,0,(2+S(t))*h,I=H/2)
i=9;while(i--){x[d='drawImage'](c,0,0,w,H,2*W,I,W,I);x[d](c,0,0,w,H,0,I,W,I)}

Aug 7 2025 2:39 AM UTC

}// 140/140

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Fractal

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taupelink

remix of d/19367 by u/taupelink

function u(t) {

f=(x,y)=>C(x)<S(y)?f(x-9,y+.1):T(x*y);for(i=1e3;i--;)X=(r=Math.random)()*480,Y=r()*6.3,f(X/70,Y)>1?x.fillRect(960+2*X*C(Y),540-X*S(Y),1,1):t

Jul 10 2020 2:02 AM UTC

}// 140/140

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d/19370

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stephanegeorget

function u(t) {

c.width|=0
t|=0
x.globalCompositeOperation='xor'
q=960
p=540
for(i=p;i--;) x.fillStyle=R(i*i),
x.fillRect(s=q*S(i*t)+q,r=p*C(i*t)+p,q-s,p-r)

Feb 21 2022 10:38 PM UTC

}// 140/140

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Hot grid generator

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danny@hille.dk

function u(t) {

for(c.width|=i=45,x.lineWidth=9;i--;c.style.filter='invert(')
x.beginPath(),x.arc(i%9*221+99,(i/9|0)*221+99,99,4*t+3*i,4+4*t+3*i),x.stroke()

Jul 25 2021 9:13 PM UTC

}// 140/140

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Idea from a tweet I saw some time back, can' t find the tweet now :-(

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corruptio

remix of d/5769 by u/ETHproductions

function u(t) {

q=b=>(Math.acos(v=-v)/.8+b)%8/(Y/Z+2)*5&1
for(c.width=256,Z=X=64;--X>-Z;)for(Y=Z*2;--Y;x.fillRect(X+Z,Y,1,q(t)+q(t+4)/2))v=X/(Z*Y*2-Y*Y)**.5

Jan 9 2018 9:28 AM UTC

}// 140/140

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with a backside

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metamero

function u(t) {

localStorage.Ü=`t?++m%5||(c.width=w=288,x.fillRect(0,0,w,w),E=p=>p<0?0:p>12?12:p,a^28?a^2?F=(p,a,b=5)=>x.clearRect(5+a`
location='/id/14016'

May 20 2019 4:01 PM UTC

}// 140/140

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two player #pong (Q↑↓A vs L↑↓P) dweet split experiment [1/3] - full code at codegolf.tk/a/363

u/metamero

#game instructions: scroll down and back sometimes to begin. click on canvas and play with keys Q/A for one player and L/P for the other. also works when seeing/executing all the tree parts/dweets d/14017 d/14016 and d/14015 . or just scroll my page up to the last part u/metamero
u/cantelope

update: codegolf.tk (and all .tk domains), is permanently offline... for now there are a handful of working mirrors, e.g. https://whr.rf.gd/shorty/65NAW

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contone

function u(t) {

p=x.createPattern(stats.dom.firstChild,'')
x.rotate(.1)
x.fillStyle=p
x.fillRect(20,20,1920,1080)
x.font=`9cm"`;x.fillText(`🐓`,0,0)

Apr 7 2021 11:29 PM UTC

}// 132/140

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chicken stats