Dweets awesomed by u/DataMeta

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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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

Show more comments…
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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magna

function u(t) {

g=x=>S(y/8+t)
eval(unescape(escape`睩瑨⡸⥦潲⡦楬汒散琨〬〬眽挮睩摴桼㴰ⱷ⤬椽㈵㘻椭ⴻ晩汬⠩⥢敧楮偡瑨⠩ⱡ牣⠨堽椥ㄶ⬱⤪㘴Ⱘ礽⡩㸾㐩⬱⤪㘴ⰳ㈪䵡瑨⹡扳⡶㵧⡘⤩ⰰⰷ⤬晩汬却祬攽刨眬欽⡶㸰⤪眬欩`.replace(/u(..)/g,"$1%")))

Nov 3 2020 4:50 PM UTC

}// 139/140

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https://tixy.land runtime. Enter code in the arrow function on the first line.

u/magna

Uncompressed: with(x)for(fillRect(0,0,w=c.width|=0,w),i=256;i--;fill())beginPath(),arc((X=i%16+1)*64,(y=(i>>4)+1)*64,32*Math.abs(v=g(X)),0,7),fillStyle=R(w,k=(v>0)*w,k)
u/magna

x/y offset fix in d/20502

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ciaccodavide

remix of d/20452 by u/ciaccodavide

function u(t) {

c.width|=1
x.font=`${99+90*S(t)}px arial`
for(i=0;i<36;i++)
for(j=0;j<26;j++)
x.fillText('◍',i*70+j*35-669,j*70+S(t+j/10)*10*j)

Nov 3 2020 8:21 AM UTC

}// 127/140

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u/Xen

nice!

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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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taupelink

remix of d/20409 by u/taupelink

function u(t) {

r=Math.random;for(i=k=60;i--;x.fillRect(k*X,k*Y,i/t,i/t))X=r(Y=r()*18)*32,x.fillStyle=R(h=k*S(Y%T(p=X%6/2-1)%C(q=Y%6/2)*S(Y/4*p))*4,h*p,h*q)

Nov 1 2020 4:03 AM UTC

}// 140/140

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d/20445

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katkip

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀽𜐲𜀻𨰮𬱴𮑬𩐮𩡩𫁴𩑲👠𨱯𫡴𬡡𬱴𚀵𜀩𨀻𮀮𩡯𫡴👠𛠵𨱭𘡠𞱸𛡧𫁯𨡡𫁁𫁰𪁡🐹𛱴𛱴𞱸𛡦𪑬𫁔𩑸𭀨𙱰𙰬𭀪𭀪𜠬𜰷𚐻𮀮𩡩𫁬𥁥𮁴𚀧𨠧𛀱𜐲𛑴𚡴𚠲𛀴𜀩𞱸𛡧𫁯𨡡𫁁𫁰𪁡👴𛰹𞱸𛡦𪑬𫁔𩑸𭀨𙱂𙰬𝐵𛀴𜀩`.replace(/u../g,``)))

Oct 31 2020 4:27 PM UTC

}// 128/140

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u/DataMeta

#B
u/DataMeta

#waitforit
u/tomxor

Wow, the merge effect is interesting

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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

Show more comments…
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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Tesseract

function u(t) {

n=c.width=133
d=(a,b)=>[a+(o=a-7-C(t))*(k=.1/(o*o+b*b)),b-b*k]
for(l=1e4;l--;)x.fillRect(j=l%n,i=l/n,1,(C[l]=t?d(...C[l]):[i/5,j/5])[1])

Oct 30 2020 12:38 PM UTC

}// 136/140

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Schramm–Loewner evolution

u/Tesseract

If anyone knows how to get something that looks like brownian motion as a function of t in around 10 bytes, I'd like to know (it should replace C(t)).
u/rodrigo.siqueira

maybe C(t*i**8) is more random
u/rodrigo.siqueira

I see a very beautiful orange SLE (Schramm-Loewner Evolutions) here: http://www.statslab.cam.ac.uk/~jpmiller/teac… I wish this could be reproduced in javascript.
u/rodrigo.siqueira

I asked jpmiller about how he did that incredible beautiful orange SLE and got his answer, if you want to reproduce it The way that the image was made is using the following steps: "1) Sample an instance of the Gaussian free field (GFF) — see Page 24 of this paper for Mathematica code which produces it https://arxiv.org/pdf/math/0312099.pdf 2) The GFF is a function h defined on the grid {1,...,n}^2. If you consider its exponential exp(i c h), where i = sqrt(-1), c > 0 is a constant, then you get a vector field. 3) Then you can consider flow lines of this vector field by solving the equation eta’(t) = exp(i c h(eta (t)). The image essentially shows flow lines with angles +/- pi/2 starting from every point in the square where c = 1 / (2/Sqrt(128) + Sqrt(128)/2) — this is the value of c so that what you will see will be related to SLE with kappa = 128. Best wishes, Jason"

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