Dweets awesomed by u/joeytwiddle

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: #Food

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danny@hille.dk

remix of d/24593 by u/Pascal

function u(t) {

for(j=8;j--&&t<4;)for(i=1080;i--;x.fillRect(a=t*60+j*240,i,m=f(a/600-1.6,i/600-1)**2,1/m))f=(X,Y,n=19)=>X<3?f(X*X-Y*Y-.7,2.3*X*Y-.2,--n):n/9

Dec 21 2021 9:51 PM UTC

}// 140/140

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Embossed Julia #fractal remix

u/danny@hille.dk

ultra fast rendering->for(j=32;j--&&t<1;)for(i=1080;i--;x.fillRect(a=t*60+j*60,i,m=f(a/600-1.6,i/600-1)**2,1/m))f=(X,Y,n=19)=>X<3?f(X*X-Y*Y-.7,2.3*X*Y-.2,--n):n/9

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Pascal

function u(t) {

for(j=4;j--&&t<8;)for(i=1080;i--;x.fillRect(a=t*60+j*480,i,2,f(a/600-1.6,i/600-.9)**2))f=(X,Y,n=83)=>X<2?f(X*X-Y*Y-.81,2*X*Y-.205,--n):n/83

Dec 18 2021 4:07 PM UTC

}// 139/140

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Julia #fractal for c = -0.81 - 0.205i

u/andrea270872

the "leaves" inside the fractal are just so beautiful!

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magna

remix of d/24463 by u/robotman_

function u(t) {

c.style.filter='invert('
for(w=1920,i=d=0;i++<w;x.fillRect(i+99,540+d*9,1,p))p=1-i/w,r=Math.random(),d+=r-.5,x.fillStyle=R(r*d,i**.7*d**2,i)

Dec 9 2021 6:08 AM UTC

}// 140/140

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Projectile #waitforit

u/umutyuss

Awesome
u/lewdev

Cool. It's like a spirit bomb.

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farter

remix of d/24461 by u/farter

function u(t) {

eval(unescape(escape`琿渽琫㉼〺氽〻楦⡬㱮⥻氽渻景爨椽氻ⴭ椻⥦潲⡪㵬㬭⵪㬩甽䵡瑨⹐䤯氬欽氭椭樬款〦☨稽㤶〯⠱⽔⡵⩩⤫ㄯ吨甪権⤬爽㐸⽬ⱸ⹦楬汒散琨稭爬㘰⭺⽔⡵⩩⤭爬爫爬爫爩⥽`.replace(/u(..)/g,"$1%")))

Dec 8 2021 7:02 AM UTC

}// 123/140

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does this diagram have a name? #waitforit

u/farter

finally with compressor from d/17775 , now draws incrementally non-repeating, just nicer! go fullscreen for more details.

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robotman_

function u(t) {

for(i=d=0;i<1920;i++)x.fillRect(i,540+(d+=Math.random()-.5)*10,1,1)

Dec 7 2021 11:36 PM UTC

}// 67/140

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Random Walks

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BriSeven

remix of d/24454 by u/BriSeven

function u(t) {

c.width*=1
for(i=99;i--;x.setTransform(C(n=t+C(t)*i/9)*2,-S(n),S(n)*2,C(n),960,200+i*6),x.font='5cm a')x.fillText('😨',-C(i/3)*20,70)

Dec 7 2021 2:24 AM UTC

}// 132/140

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Getting put through the wringer

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KilledByAPixel

function u(t) {

r=(r=4e3)=>Math.random()*r
X=r()-2e3
Y=r()-2e3
w=r()/9
x.rotate(r()<29?X:0)
for(i=r()/9;i-->0;)for(j=w;j-->0;)x.fillRect(X+i,Y+j,1,r(1)/t/t)

Dec 5 2021 3:22 PM UTC

}// 140/140

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Generative Grayscale Study

u/KilledByAPixel

Different every time, takes about 10 seconds to draw

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vain

function u(t) {

for(i=40;i--;){for(j=23;j--;){p=t*Math.sqrt(((i-20)**2)+(j-11)**2+t);x.fillRect(i*48,j*48,p,p)}}

Dec 3 2021 9:27 PM UTC

}// 96/140

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[vn-01] Black out - by va!n

u/vain

if you want some colors...
u/vain

if you want some colors...
u/vain

for(i=40;i--;){for(j=23;j--;){p=t*Math.sqrt(((i-20)**2)+(j-11)**2+t);x.fillStyle=R(i*6,j*6,p);x.fillRect(i*48,j*48,p,p)}}
u/Tranquil

Great work!
u/vain

This is my very first attempt with js and canvas programming

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jellyedwards

function u(t) {

c.width|=1
l=Math.log(Math.min(t,35))*66
x.setTransform(l,0,0,l,-31.1*l,-27*l)
x.font='1em a'
x.fillText(u,0,40)

Nov 11 2021 2:38 PM UTC

}// 112/140

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#circlechallenge #quine #cirquinechallenge

u/magna

Haha

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rep_movsd

function u(t) {

t?x.fillText(0,960+X/8,540+Y):Y=X=99
X+=(Y-=X/69)

Nov 6 2021 10:24 AM UTC

}// 49/140

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Almost a circle #circlechallenge

u/rep_movsd

Based on the Minsky algorithm
u/rep_movsd

48 bytes - t?x.fillText(0,960+X,540+Y):Y=X=99 X+=(Y-=X/9)/9
u/joeytwiddle

TIL, thanks! https://news.ycombinator.com/item?id=15266331

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