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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DataMeta

remix of d/8876 by u/robbyg

function u(t) {

for(j=20,h=96;h--;)for(g=t*6,v=54;v--;)z=S(g&(h/v))*255,
x.fillStyle=R(n=v<=h-3?0:255-z,n-42,v>h-3?64:255-z,.01),
x.fillRect(h*j,v*j,j,j)

Jul 20 2019 11:00 PM UTC

}// 137/140

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#beach

u/DataMeta

curiously, the sand color comes out as pure yellow instead on amoled

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function u(t) {

with(x)beginPath(),lineWidth=6,drawImage(c,8,8,1904,1064),strokeStyle=R(t*16&128,T(t)*8,T(t*80)*40),arc(960,540,600*S(t/8)+500,0,7),stroke()

Mar 30 2018 10:13 AM UTC

}// 140/140

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u/innovati

🌈🌀

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KilledByAPixel

function u(t) {

eval(unescape(escape`󭽩󭍨󚍸󚝦󫽲󚍤󬭡󭽉󫝡󩽥󚍣󛌭󞌬󜌩󛍳󨝶󩜨󬭥󬽴󫽲󩜨󚜩󛍤󬭡󭽉󫝡󩽥󚍣󛌲󝜶󛌰󚜬󪜽󭌿󝜺󝝥󜼻󪜭󛜻󭌿󨝲󨼨󞌶󜌬󝜸󝬬󝜰󜌬󨜽󪜯󛬳󞜸󛜱󛬵󝼬󨜩󞭦󪝬󫍒󩝣󭌨󪜥󜼲󚬸󛌨󪜾󟬵󚜪󞌬󞌬󞌩󚝦󪝬󫍓󭍹󫍥󟝠󪍳󫌨󙍻󪜪󪝽󘌹󞜥󙍻󤼨󪜪󚬵󚜪󞜹󯜥󨌊󮌮󨽬󪝰󚌩`.replace(/u../g,'')))

Jun 21 2021 1:53 PM UTC

}// 139/140

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Autostereogram ⭐

Show more comments…
u/lionleaf

That is so cool! Took me a second, but the star really pops!
u/rodrigo.siqueira

Wow I can see a ⭐
u/tomxor

Haha, nice star
u/magna

Yay! Not that it would greatly help bring it down to 140, but: (i>>5)*8 could be i>>5<<3 or even i>>2&-4
u/magna

I want to try rendering in one pass, like a shader, picking the right colour based on a bump map (either procedural, or maybe from a suitable emoji).
u/magna

I had this failed attempt back in 2018: for(i=3e4;i--;x.fillRect((C=i%213)*9,(T=i/213|0)*9,9,9))x.fillStyle=R((C%21+1)**T%255,T**(C%21+1)%255) for(i=9;i--;)x.drawImage(c,X=400+i*100,400,50,200,X-9,400,50,200)
u/KilledByAPixel

still trying to figure out why the other one had artifacts and this one seems not to, maybe something to do with randomizing the background you mentioned
u/Xen

i'll just believe you all since i'm blind in one eye lol
u/donbright

fascinating
u/smtsjhr

i love these!

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Odog8

function u(t) {

R=1+1/R||2
x.rotate(2*Math.PI/R)
x.fillRect(t*99,0,9*t**R,t)

Dec 22 2022 3:05 PM UTC

}// 60/140

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Vector Phield

u/Odog8

#waitforit
u/Odog8

Pro tip: If you need to use Math.PHI more than once, it's less bytes to use a=t&&1+1/a
u/Odog8

Actually it isnt, please dont listen to me

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rodrigo.siqueira

remix of d/34107 by u/s1wc

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(n=0;n<19;n+=.01)for(i=6;i--;)x.clearRect((S(n-t*9)*18+t*99+n*99)*1.1%1920,540+S(n+i-t)*130*C(n/6-4)**25,4,4)

Jul 13 2025 9:59 PM UTC

}// 136/140

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Walking pulse modulation

u/s1wc

what the what is this

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Fime

function u(t) {

px=[960,0,1920];py=[0,1080,1080];dx=dy=0
for(;;){
r=Math.floor(Math.random()*3)
dx+=(px[r]-dx)/2
dy+=(py[r]-dy)/2
x.fillRect(dx,dy,1,1)
}

Jun 28 2019 2:29 PM UTC

}// 138/140

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Sierpinski Triangle by randomly moving a point around

u/Xen

nice!, was my original idea to use chaos game for a better golf ;-)

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firegodjr

remix of d/8942 by u/firegodjr

function u(t) {

F=n=>{for(i=2;i<n;)n=n%i++==0?0:n;return n>1}
x.drawImage(c,0,l=10)
for(j=214;j--;)x.fillStyle=F(j^t*60)?"#f00":"#000",x.fillRect(j*l,0,l,l)

Jul 27 2018 6:06 PM UTC

}// 140/140

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Further optimized the is_prime (F) function. How far can you scroll before timeout? :D #prime

u/fujimotos

It's kinda surprising that the distribution of prime numbers has such a noticeable pattern.
u/firegodjr

Well, primes are still technically pseudorandom. They don't form a noticeable pattern, per se. This algorithm would possibly work with any consistent pseudorandom number generator, but this pattern is uniquely made up of prime number interactions.
u/lionleaf

Well, non-prime numbers definitely have a pattern that I would expect helps making this very beatiful. For instance ever other number is not prime (even), every 5 number, every 7 number etc. So lot's of regularities.
u/fujimotos

Yeah. I see Math.random() > 0.5 produces a pettern looking nothing but garbled noise. In comparison, the one generated by prime numbers is a Persian carpet.

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KilledByAPixel

remix of d/13291 by u/KilledByAPixel

function u(t) {

t||x.rotate(.7854,x.font="300px'",x.fillText("ᴛʜᴇ 𝕃ᴇɢᴇɴᴅ ᴏꜰ 𝔻ᴡᴇᴇᴛ",210,1e3,1500))
for(i=1024;i--;)x.fillRect(705+(i&i/t),370-i,9,9)

Apr 20 2019 12:11 AM UTC

}// 131/140

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♥ ♥ ♥ #Zelda

u/KilledByAPixel

#sierpinski
u/Xen

its not.. but feels like triforce,,,,, new dwitter age maybe
u/KilledByAPixel

is better than triforce, has infinite triangles instead of just 3
u/katkip

#design
u/KilledByAPixel

#logo

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taupelink

remix of d/29092 by u/taupelink

function u(t) {

p=Math.PI;for(i=189;i--&&t<.3;x.fill(x.stroke()))x.beginPath(x.fillStyle=R(j=i+48,i,i,j**-.2)),x.arc(i%9*240,i%7*240,j*t**t,r=i*p*2/3,r+p-t)

Dec 11 2023 4:22 AM UTC

}// 140/140

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d/29094

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Xen

function u(t) {

for(c.width=Z=369,i=99,x.globalCompositeOperation=`xor`;i--;x.rotate(C(t/29)))x.fillRect(Z/5,Z/5,Z,Z)

Oct 7 2018 10:20 PM UTC

}// 101/140

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