Dweets awesomed by u/stellartux

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: #Opposites

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ellisk1

function u(t) {

with(x)for(m=q=t*30|0;m-->q-99;fill(arc(960+(r=m**.5*20*C(m))*S(a=m**3),540+r*C(a),w,0,7)))beginPath(fillStyle=R((w=q-m)*2,0,0,1/w**1.48))

Dec 28 2018 1:29 AM UTC

}// 138/140

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VIRUS

u/katkip

#virus I hope this will not aggravate my cold.
u/BirdsTweetCodersDweet

:O

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Xen

function u(t) {

t?Z=t*8%9:c.width=300
for(i=2e3;i--;x.fillStyle=R(0,t*Y%199))x.fillRect(i%300+S(Y=Z^i)*Z*C(i),59+i/49+C(Y)*Z*t,.1,1)

Nov 6 2018 8:02 PM UTC

}// 116/140

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just a test

u/Xen

#grass

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rbong

function u(t) {

for(X=960;X--;x.fillStyle=`hsl(${(t+k)*25},99%,50%)`,x.fillRect(X*2,t%9*120,2,2))for(r=i=0,k=45;--k/r;i=j)j=2*r*i+1-t%9/54,r=r*r-i*i-X/4800

Oct 28 2018 8:38 PM UTC

}// 139/140

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Scanline Rainbow Mandelbrot Section

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u/rbong

I've spent quite a bit of time now trying to get a faster, more detailed mandelbrot set or other interesting fractal that hasn't been done in fewer characters. This has included exploring obscure fractals like those generated from polynomial roots, using image data as storage or other memoization, and the dweet earlier that used WebAssembly with a new compression technique. I'll keep exploring these ideas, but this experiment bore the quickest result. #fractal #mandelbrot #scanline #rainbow
u/rbong

Oh yeah, I also tried MAndelbrot perturbation. It's pretty expensive for these purposes but I might be able to do something similar.
u/Xen

Love it!
u/tomxor

I'd love to see more fractals, especially more esoteric ones, keep up the good work rbong.
u/katkip

Great job bro!! I love this one!
u/lionleaf

Amazing!
u/iverjo

#slow_render

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pavel

remix of d/10485 by u/joeytwiddle

function u(t) {

for(z=42;j=z-->>1;x.fillRect(960+S(k)*15-w/2,540+C(k)*15+w/2-r,w,2*r-w))k=7*t-j/2,x.fillStyle=`hsl(${15*k},33%,${7*j}%)`,r=50*j,w=r*(.5+z%2)

Oct 20 2018 8:43 PM UTC

}// 140/140

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Fixed the plus shape in the back and added color cycling

u/pavel

Check it out in fullscreen

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Purpzie

remix of d/3713 by u/bobdunn

function u(t) {

for(i=64;i--;)x.fillStyle=`hsl(${i*5+t*30} 60%${S(t*3)*25+50}%`,x.fillRect(i*30,S(4*t+3*i)*99,20,99);x.drawImage(c,-2,9)

Sep 28 2018 5:14 PM UTC

}// 120/140

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u/joeytwiddle

#rainbow

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f8f82804

function u(t) {

c.width^=0;t=5*t%9;with(x)f=s=>font=s+'in z',f(3),x.l=fillText,l('🏌',0,999),f(1),l('⛳',1050,840),fillRect(2e2+99*t,999-99*t+9*t*t,s=16-t,s)

Sep 10 2018 8:41 PM UTC

}// 139/140

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#emoji #golf

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u/joeytwiddle

:-D
u/donbright

lol
u/sigveseb

Hehehe
u/fujimotos

I've never seen someone so good at playing golf.
u/kipkat

on mobile is different
u/Lazy1337

also works on Chromium/FF Linux 32b but not on Windows 10 Chrome(the golfer doesn't appear)
u/f8f82804

Among my ubuntu systems, only 18.04 has color fonts for both emoji.

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New_Core

function u(t) {

c.width|=0
for(i=89;i--;)x.lineTo(960+800*C(i/2-t)*S(a=S(i-t)+i+t),540+500*S(i+t)*C(a))
x.fill("evenodd")

Aug 12 2018 1:48 PM UTC

}// 106/140

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u/Xen

Smoooth

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ETHproductions

remix of d/2522 by u/magna

function u(t) {

((c.width|=y=0,x.font='64px monospace',u+`
`).slice(0,t*3+S(t)*5)+' |'[t*2&1]).split`
`.map(r=>x.fillText(r,0,y+=64))

Aug 11 2018 2:41 PM UTC

}// 117/140

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Down to 117, looks nicer on the canvas too... Still no room for typos though!

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Xen

function u(t) {

for(Z=i=32;i--;x.fill(x.arc(960,540,Z+i*Z-C(i*t/9)*Z,i+t*2,i+t*2+2)),x.stroke())x.beginPath(x.fillStyle=`hsla(${i*Z^t*99},90%,50%,.01)`)

Jul 31 2018 9:43 PM UTC

}// 136/140

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Show more comments…
u/DataMeta

Amaaazing style!
u/joeytwiddle

Beautiful! #colors #spiral
u/magna

#toon
u/magna

THIS IS CRAZY!
u/fujimotos

This color tone is so awesome. Reminds me metallic oil.
u/sigveseb

Holy shit so nice :)
u/iverjo

Yes!
u/lionleaf

Beautiful!
u/joeytwiddle

#oil
u/Joachim

#art

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firegodjr

function u(t) {

t||x.translate(960,540)
x.fillRect(-25,-25,500*C(t),50)
x.drawImage(c,-960,-540)
x.rotate(0.001*S(t)+.001)
x.fillStyle=`hsl(${t*9},99%,50%`

Jul 5 2018 4:27 PM UTC

}// 139/140

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