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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jick

function u(t) {

c.width=300;for(i=5;i<300;i+=3)for(j=5;j<240;j+=3){x.fillStyle=R(0,0,0,S(Math.sqrt(i*t*j)+t));x.fillRect(i,j,3,3);x.fillRect(300-i,j,3,3);}

Apr 23 2020 4:50 AM UTC

}// 139/140

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rodrigo.siqueira

remix of d/20935 by u/rodrigo.siqueira

function u(t) {

for(ⵠ=1e4;ⵠ--;ထ(0,ꖴ=2,280,ⵠ+t,`💡&&⭕⭕➜🍩🍩`))
ထ=(ഠ,𑄗,Ꙭ,ට)=>Ꙭ>99?ထ(𑄗+Ꙭ*C(ට),ഠ+Ꙭ*S(ට),Ꙭ/ꖴ,T(ට*ට+t*ට)/ꖴ):
x.fillRect(ഠ+480+950*(ⵠ%ꖴ),𑄗+510,.4,t<ꖴ)

Dec 9 2020 4:50 PM UTC

}// 140/140

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Illuminated Double Donuts #torus #donut

Show more comments…
u/ciaccodavide

Nice! Double donuts everywhere!
u/pavel

Not a fan of the obfuscated code. Looks nice to people who don't care to understand it but hurts your fellow coders that want to play around with it, which is a big part of Dwitter for me.
u/geb

for(i=1e4;i--;f(0,c=2,280,i+t,💡&&⭕⭕➜🍩🍩)) f=(w,h,q,d)=>q>99?f(h+q*C(d),w+q*S(d),q/c,T(d*d+t*d)/c): x.fillRect(w+480+950*(i%c),h+510,.4,t<c)
u/rodrigo.siqueira

I posted a cleaner version (remix). I usually avoid obfuscated code, but in this case it was for aesthetic reasons and for fun ("donuts everywhere" style). The 💡&&⭕⭕➜🍩🍩 part was just to illustrate, it has no functionality in the code.
u/tomxor

I think Pavel might be refering to unicode tofu, I get this too... the "⭕⭕➜🍩🍩" bit renders but almost all the other non-ASCII chars are tofu. I think it depends on what browser/OS combo you have.
u/tomxor

... and which fonts you've bothered installing.

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buddybearalex

function u(t) {

x.globalCompositeOperation="xor";if(t<1e-9){a=0;b=25};x.drawImage(c,1,1);x.fillRect(0,0,5+a,5+a);a+=1;

Nov 4 2025 10:57 PM UTC

}// 102/140

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double sierpinski forming

u/gai

huh
u/ximavus

ooh

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pavel

remix of d/10527 by u/yonatan

function u(t) {

for(i=c.width|=f=g=>2*g(2*i/3)+g(-i/3),w=960;Z=S(--i);x.arc(w+w*(Z*S(t)+f(S)*C(t))/z,540+w*f(C)/z,w/z/z,0,7))z=7+f(S)*S(t)-Z*C(t);x.stroke()

May 9 2019 10:59 PM UTC

}// 140/140

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#trefoil #knot

u/pavel

Play around with f(g) to generate different shapes.
u/KilledByAPixel

trefoil knot is best knot, awesome work.
u/katkip

g=>2*g(5*i/9)+g(i/9) is cute
u/iverjo

Very good in fullscreen

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GoogleBen

function u(t) {

c.width=1920;
  for(i=-2;i<3;i++)
 x.fillRect(960+i*55+i*Math.abs(T(t*.66))*30+T(t*.66)*300,400,50,50)

Dec 26 2017 11:05 PM UTC

}// 102/140

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username

remix of d/11626 by u/username

function u(t) {

s=(t%3)**3
for(Y=9;Y--;x.font="99in'")for(X=Y+1;X--;x.fillStyle=`hsl(${(X+Y+t)**2},66%,71%`)x.fillText('.',738+(X*48-Y*24)*s,(Y-4)*s**2+571)

Feb 20 2019 5:02 PM UTC

}// 140/140

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katkip

function u(t) {

for(i=999;i--;)x.fillRect(960+S(i)*i*C(t*i/99)*t,99+C(i+C(i)/2)*i*t,1,C(i+S(i))*2+2)

Nov 8 2019 12:42 PM UTC

}// 84/140

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#abstract

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Xen

remix of d/21635 by u/erin

function u(t) {

for(i=499;i--;x.fillRect(i*3+S(t+i/t)*i,540+S(t+i/i)*580,9,9))x.fillStyle=`hsla(${i*t},70%,${90*C(i&t*t)}%,.5)`

Feb 11 2021 1:30 PM UTC

}// 111/140

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#Waitforit digital crystal #sierpinski

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Tekmap

remix of d/22980 by u/New_Core

function u(t) {

for(c.width|=j=15,x.translate(960,540);j--;x.rotate(t/9+j))for(i=20;i--;x.fillRect(i*9-80,20*S(t*(j%5+3)-i/8)-a/2+99+50*j,4,a))a=40*S(i/5)

Jun 5 2021 8:24 PM UTC

}// 138/140

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var fishes 1

u/Tekmap

#aquarium

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stuk

function u(t) {

z=255;x.fillStyle=R(S(t)*z,S(t*2)*z,S(t*3)*z,.5);s=1920/c.clientWidth;c.onmousemove=(e)=>{x.fillRect(e.clientX*s,e.clientY*s,s*2,s*2)}

Feb 22 2017 12:54 AM UTC

}// 134/140

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u/anonymously

dopamine
u/iverjo

#interactive