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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retera

remix of d/4330 by u/retera

function u(t) {

c.width|=0
s=480;for(q=0;q++<40;){for(j=0;j++<10;){a=q+t;x.fillStyle=R(j*25,q*8,0);x.fillRect(C(a)*s*C(j+t)+960,S(a)*s*C(j-t)+540,9,9)}}

Dec 28 2017 8:15 AM UTC

}// 136/140

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camel_case

function u(t) {

code=(_2=>_3=>add=>add(_2)(_3))(f=>x=>f(f(x)))(f=>x=>f(f(f(x))))(m=>n=>f=>x=>m(f)(n(f)(x)))
throw "2+3="+code(n=>n+1)(0)

Feb 9 2026 3:16 PM UTC

}// 120/140

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Some λ-calculus for ya

u/ximavus

I'll probably never understand this code
u/camel_case

https://emmabastas.codeberg.page/dist/lambda…
u/camel_case

^ I’m actually working on a Socratic dialogue on the topic ;-)
u/ximavus

Good explanation from that page. But I'm a low level dev not a frontend lol :)
u/cantelope

#fascinating

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BackendForth

function u(t) {

c.width=1920
q=Math.floor(t/3.14+4)
for(i=-q;i++<q;)for(j=-q;j++<q;)x.fillRect(960+i*8+i*(d=(i*i+j*j)**.5*2**-(81*S(t)**2)),540+j*8+j*d,8,8)

Mar 2 2021 10:06 PM UTC

}// 140/140

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ntsutae

remix of d/20669 by u/tomxor

function u(t) {

for(c.width&=i=8320;i--;)
x.fillRect(X=i&127,Y=i>>7,
k=S(8*t+X*X-3*Y*Y+19*X*Y)+.5,k)

Nov 18 2020 4:30 PM UTC

}// 84/140

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u/tomxor

#illusion This is messing with my eyes! looks like continuous rotating slices without ever getting beyond 90 degrees
u/joeytwiddle

Travelling without moving
u/ntsutae

I didn't have enough understanding and respect for the work

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katkip

remix of d/13039 by u/rodrigo.siqueira

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(i=4e3;i=i-1;){
X=T(i)+S(K=i*.9+t)*C(F=i/2+t)
Y=C(i+t)+C(K)/2-2*C(F*2)
x.clearRect(960+X*130,550+Y*130,6,6)
}

Apr 6 2019 2:51 PM UTC

}// 136/140

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Xen

function u(t) {

x.fillRect(0,0,S(c.width=t)*t,t)

Sep 14 2018 11:50 PM UTC

}// 32/140

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32byte tiny drunken dweet

u/Xen

also... x.fillRect(T(c.width=t),0,t,t) .... basic 30byte

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pavel

function u(t) {

for(c.width|=i=60,x.scale(5,5);i--;x.ellipse(192,20+o*160,o?60:80,o?30:15,0,a=(i>>1)*(o-.5)*.42+S(3*t)*.7,a+7))o=i+i/2&1
x.stroke()

Dec 11 2018 1:37 AM UTC

}// 131/140

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Twisted Cylinder #beesandbombs

u/pavel

Single stroke call and only ellipse to draw. The lines are canvas connecting the various ellipse draw cal into a single stroke, I just manage the start angles.
u/pavel

o determines which ellipse, 0 is top and 1 is bottom. It goes: top, bottom, bottom, top. Four-cycle to draw two vertical lines and reset. The angle increments every 2 so top and bottom angle is the same.
u/jylikangas

Thanks for writing about the tricks in your dweets.

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rodrigo.siqueira

remix of d/28793 by u/AArt1256

function u(t) {

for(X=Y=t,i=8e4;i--;Y=(i/Y&8)+(Y-X)*.999,X+=Y+.1/X)x.fillRect(X*16+900,Y*16+540,.1,t<2);c.style.filter='invert()sepia()'

Nov 1 2023 8:44 PM UTC

}// 120/140

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Tiling effect

u/Joachim

#shiny
u/magna

#texture

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rodrigo.siqueira

remix of d/34063 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert()`
for(i=4e4;i--;x.fillRect(680+680*S(i%2)+C(k=i*i*60)*800/Z,540-S(k)*800/Z,.1,t<1))r=S(w=i*i/t)-t,Z=(T(i*t))*6-.1/t

Jul 1 2025 5:44 AM UTC

}// 139/140

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They are coming

u/ximavus

who

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prplz

remix of d/9441 by u/prplz

function u(t) {

let i,j,k
for(j=k=32;j--;)for(i=60;i--;x.fillRect(i*k,j*k,k,k))x.fillStyle='#'+(((i*i*.2-j)+t*k)*27&4095).toString(16)

Aug 27 2018 7:57 AM UTC

}// 118/140

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