Dweets awesomed by u/Tesseract

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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joeytwiddle

function u(t) {

for(r=439,j=r;j--;x.fillRect(j?960+r*C(a=i/3+d):0,j?530-r*C(d):0,w=j?20:2e3,w))i=j%9+1,d=t*i/2-j/r,x.fillStyle=j?`hsl(${r*i} 99%50%`:'#0001'

Nov 4 2020 11:59 AM UTC

}// 140/140

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Improved redux of https://twitter.com/beesandbombs/status/1323…

u/joeytwiddle

Closer to the original: r=398 and a=i/3-d

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pavel

function u(t) {

for(c.width|=i=266;i--;x.beginPath(x.fill()))for(r=74-T(S(i*i+t/4)*.6+t/2)**8,j=6;j--;)x.arc((i>>4)*2-i%2<<6,i%16*111,r>0&&r,a=j*1.047+11,a)

Nov 3 2020 8:04 PM UTC

}// 140/140

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Hexagons are the Bestagons

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u/pavel

Inspired by https://www.youtube.com/watch?v=thOifuHs6eY and https://twitter.com/Hau_kun/status/124501623…
u/danny@hille.dk

Amazing
u/pavel

This would look better with the colors inverted but I couldn't fit it.
u/tomxor

Neat!
u/joeytwiddle

Hexcellent
u/anotherkitten

so crisppp
u/Xen

so clean
u/DataMeta

hextra smooth
u/katkip

hexy
u/RamiSlicer

HEXAGONS ARE THE BESTAGONS!!!!!
u/erin

they are

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anotherkitten

function u(t) {

for(j=64;j--;)for(i=36;i--;x.fillRect(j*30,i*30,30,30))x.fillStyle=i>8?R(0,0,S(t+i/2+j/8)*i/2+i*3-19):R(M=S(t/39+i*i+j*.6)**6*9999-9899,M,M)

Nov 3 2020 5:36 PM UTC

}// 140/140

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ocean by night

u/danny@hille.dk

:-)

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danny@hille.dk

remix of d/20449 by u/SzymonPL188

function u(t) {

for(c.width|=d='DWITTER ❤️',i=d.length;i--;)x.font=`${299+S(i+t*9)*99}px arial`, x.fillText(d[i],500+i*100+S(t*3+i)*300,500+C(t*5+i)*100)

Nov 2 2020 5:27 PM UTC

}// 137/140

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Old-school remix of d/20449

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SzymonPL188

function u(t) {

c.width=1920 // clear the canvas
for(var i = 0; i < 220; i ++ ) {
x.fillRect(-3 + (i * 10),S(t * 5) * -25 + 600,10,S(t + i * 5) * 200);
}

Nov 2 2020 7:33 AM UTC

}// 137/140

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u/Xen

Welcome to the dwitter family
u/RamiSlicer

woah it feels 3d but isn't. Very cool!

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rodrigo.siqueira

remix of d/20439 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=135)=>X**3/Y<42?f(X*X-Y*Y-.8,2*X*Y+.2,n-3):x.fillStyle=`hsl(${6*n},90%,${n}%`;i--;x.fillRect(i,t*60,1,i))f(i/5e3-.7,t/85)

Nov 1 2020 6:18 PM UTC

}// 140/140

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"The Thread. The world is an infinite tapestry. There is a thread that runs between any two people, no matter when they lived or where. Find a thread and follow it." (The Teller of Tales) #fractal #pickover #spiral

u/magna

WOW

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DataMeta

remix of d/14521 by u/DataMeta

function u(t) {

with(x)for(j=768;j--;beginPath(fill()))fillStyle=R(o=C(t*12^j)*255,o,o,.5),arc(64*(j%31),64*(j/31|0),Math.abs(S(t)*32),0,7)

Nov 1 2020 4:05 AM UTC

}// 123/140

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u/tomxor

Noice!
u/joeytwiddle

Yes! http://www.pouet.net/prod.php?which=564

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Tesseract

remix of d/20438 by u/Odog8

function u(t) {

n=c.width=133
z=t?z+C(n*z):25
d=(b,a)=>[b-b/(k=(o=a-z)*o+b*b),a+o/k]
for(l=1e4;l--;)x.fillRect(...p=[l%n,l/n],1,(C[l]=t?d(...C[l]):p)[0]/4)

Oct 30 2020 6:18 PM UTC

}// 139/140

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SLE with a better RNG

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u/Odog8

What are these even used for?
u/Tesseract

It's very interesting mathematically - it corresponds to certain kinds of random walk that are hard to analyse otherwise. Some physicists also care about it.
u/Odog8

huh.
u/joeytwiddle

https://en.wikipedia.org/wiki/Schramm%E2%80%…
u/Odog8

Hey, could you explain how you made this further? The wikipedia doesnt do as good of a job as i would have liked :(
u/Tesseract

I can't explain conformal mappings in a comment, but the central part is the function d, which sends z=a+bi to z+delta*dg_t(z)/dt (dg/dt is defined on Wikipedia). For brevity, I've set delta=1/2, so it's approximating d(g_t(z))=g_{t+1/2}(z). The complex number division is golfed. Brightness corresponds to the imaginary part of g_t(z). The javascript variable z is not a+bi, but is brownian motion - zeta(t) according to Wikipedia.
u/Tesseract

I made a non-golfed version in Python a while ago which might be easier to read: https://github.com/penteract/sle/blob/master…

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rodrigo.siqueira

remix of d/20238 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=235)=>X**3/Y<n?f(X*X-Y*Y-.8,2*X*Y+.2,n-3):x.fillStyle=`hsl(${n*4},90%,${n/2}%`;i--;x.fillRect(i,t*60,1,999))f(i/3e3,t/50)

Oct 30 2020 4:35 PM UTC

}// 140/140

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Pickover Stalks Orbit Traps #julia zoom white purple #fractal for X**3/Y<n #pickover

u/danny@hille.dk

Wow that is beautiful
u/katkip

satisfying color pallete
u/danny@hille.dk

who knew that kale was digitally represented in the julia set? for(i=2e3,f=(X,Y,n=135)=>X**3/Y<n?f(X*X-Y*Y-.9,2*X*Y+.2,n-3):x.fillStyle=hsl(${60+n},90%,50%;i--;x.fillRect(i,t*60,1,999))f(i/3e3,t/50)

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Odog8

remix of d/20437 by u/Tesseract

function u(t) {

eval(a=unescape(escape`琿瀫㵃⠷⩰⤺瀽《渽挮睩摴栽ㄳ㌊搽⡡Ɫ⤽㹛愫⡯㵡ⴷ⵰⼱〩⨨欽⸱⼨漪漫截戩⤬戭截歝੦潲⡬㴱攴㭬ⴭ㬩砮晩汬剥捴⡪㵬╮Ⱪ㵬⽮ⰱⰨ䍛汝㵴㽤⠮⸮䍛汝⤺孩⼵ⱪ⼵崩嬱崩`.replace(/u(..)/g,"$1%")));throw a

Oct 30 2020 3:17 PM UTC

}// 134/140

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i made a cute little pseudo-random brownian noise, but it was still too big :/

u/Tesseract

I found a few ways to save space - your RNG now fits nicely, thanks :)
u/Odog8

No problem!

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