Dweets awesomed by u/ersagun

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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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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tomxor

function u(t) {

x.fillRect(0,0,i=2e3,i)
for(t+=240;i--;c=t/3*(i%t<t/8))x.clearRect(960+c*S(R=i**.7)+t*C(T),540+c*C(R)+t*S(T=i**.5)*C(!c*i),s=8*S(i*160-t),s)

Oct 28 2018 5:35 PM UTC

}// 140/140

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#space #star #sun

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u/katkip

awesome
u/tomxor

It looks a bit more toasty if you multiply t*2 in i*160-t, just couldn't figure out how to fit it.
u/f8f82804

almost looks like a #virus
u/iverjo

#solar #flare
u/Cloud

#sun
u/erin

virus aged badly....
u/vain

has corona reached dwitter? Great procedural generated gfx

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yonatan

remix of d/10718 by u/yonatan

function u(t) {

eval(unescape(escape`景爨挮睩摴桼㵩㴵㐰㭩ⴭ㭸⹦楬汒散琨〬㔴〫椬㉥㌬匨㕥㌯椫琩⼹⤩挮獴祬攮扡捫杲潵湤㵠汩湥慲ⵧ牡摩敮琨⌳㔷Ⱐ⍦〲㌠㔰┬⌸㐲㠠㔰┬⌴㘶⤬牡摩慬ⵧ牡摩敮琨捩牣汥⁡琠捥湴敲Ⱓ晦映㜥Ⱓ晤㠠㤥Ⱓ捡㠩总`.replace(/u(..)/g,"$1%")))

Oct 27 2018 10:35 AM UTC

}// 140/140

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#ocean #sunset with #waves

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u/Xen

Amazing!
u/katkip

This is the most realistic dweet I ever seen!
u/yonatan

Thanks. I have a much nicer (and longer) version in flash at http://wa.zozuar.org/code.php?c=2HBv (click the "get flash" gif for chrome to activate it)
u/sigveseb

Fantastic! Looking back and comparing with the old water/ocean dweets from the early days of dwitter, we sure have come a long way since then!
u/jmpp

This is dope! I'm new to all these crushing techniques and wonder how did you get the Asian sign version of your algo ?
u/yonatan

Here: https://www.dwitter.net/d/9207
u/katkip

#realistic

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pavel

remix of d/10653 by u/anotherkitten

function u(t) {

with(x)for(c.width=-1,translate(150,i=84);--i;rotate(t),t=2.1,fill(new Path2D('M67 28 9-72-9-72 37 11-19 11-28 25')))fillStyle=R(a=50*i,a,a)

Oct 24 2018 8:24 PM UTC

}// 140/140

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u/yonatan

hah! - works as a separator
u/anotherkitten

dang, well done. wasn't sure if it was doable.
u/lionleaf

Nicely done!
u/aleamb

cool!
u/magna

damn.
u/joeytwiddle

Very good
u/katkip

Awesome!
u/katkip

#path2d
u/pavel

#uncompressed in black and white

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ersagun

function u(t) {

eval(unescape(escape`挮睩摴桼㴰㭔㵴⼳☷㭦潲⡺㵍慴栮偉⨲㭺㸰㬩椽匨吪稩⭓⡔⩺⭺⬳⸱㐩⨲ⱪ㵃⡔⩺⤫䌨吪稫稩⨲Ⱬ㴭匨㈪吪稫稩ⱬ㵩⩃⡴⤫欪匨琩Ɑ㵩⩓⡴⤭欪䌨琩⬱〬稭㴱⼱〰ⱸ⹦楬汒散琨氪⡤㴵㐰⤯洫搬横搯洫搬㤬㤩`.replace(/u(..)/g,"$1%")))

Oct 22 2018 4:09 AM UTC

}// 138/140

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Knots

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ersagun

remix of d/10580 by u/ersagun

function u(t) {

if(!t)s=k=i=j=b=500
s+=S(k+=Math.random()-.5)/4
x.fillStyle=`hsl(${t*50},90%,60%)`
x.fillRect(S(j+=S(s)/50)*b+b+b,S(i+=C(s)/50)*b+b,9,9)

Oct 22 2018 2:25 AM UTC

}// 136/140

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ersagun

function u(t) {

t*=60;i=j=0;for(s=8;u=1&(t/2),v=1&(t^u),(s*=2)<513;t/=4){if(!v){if(u==1)i=s-16-i,j=s-16-j;z=i;i=j;j=z}i+=s*u,j+=s*v}x.lineTo(i,j),x.stroke()

Oct 21 2018 10:36 PM UTC

}// 140/140

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Hilbert curve

u/aleamb

love it!
u/aleamb

#hilbert #fractal
u/pavel

Shaved off 16 chars: for(t*=60,i=j=0,s=8;u=t&2?1:0,s*=2,s<513;t/=4,i+=s*u)1&t^u?j+=s:(u&&(i=s-16-i,j=s-16-j),i+=j-(j=i));x.lineTo(i,j);x.stroke()

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ersagun

remix of d/10578 by u/ersagun

function u(t) {

for(i=j=f=24;d=a=>C(t*f)*(a[0].charCodeAt(f)-9e3),f--;i+=d`◴∈⌹⌙⍈⌮⌠⌇⌢⌑⌆⌤⌾⍃⌣⌘⌯⌧〈⌳〉⌤⌬⌯`)j+=d`○⍈⌾⋻⌤⋧⌥⌬⌰⍕⍓⌗⌥⋼⌘⌭⋧〉⌔⌗⍃⌫⌛〈`
x.fillRect(i,j,9,9)

Oct 21 2018 3:43 PM UTC

}// 135/140

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#yeah I managed to remove 5 characters using tagged template literals. I can add 2 more harmonics(=4 characters) now.

u/New_Core

nice.. now you can do x.lineTo(i,j) x.stroke()

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ersagun

function u(t) {

w=c.width=500
for(i=98;i--;)for(j=55;A=i-49,B=j-28,j--;)x.fillStyle=R((A*A+(B-S(t*2)*20)**2)*(B*B+(A-C(t)*40)**2)/w),x.fillRect(5*i,5*j,5,5)

Oct 21 2018 2:26 PM UTC

}// 140/140

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@veubeke helped trim 2 characters.

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ersagun

remix of d/10585 by u/ersagun

function u(t) {

d=(a,...r)=>(x.fillStyle=a,x.fillRect(...r))
d('#00000001',0,0,w=2e3,w)
d('#fea',i=Math.random()*w,i*w%w,5,5)
x.drawImage(c,-40,-22,w,1125)

Oct 21 2018 1:04 PM UTC

}// 139/140

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