Dweets awesomed by u/SockTaters

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: #Food

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DataMeta

function u(t) {

t||(r=0),r=(5*r+1)%256,x.beginPath(x.stroke()),x.arc(960,540,r,0,7)

Apr 22 2020 7:20 PM UTC

}// 67/140

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#circlechallenge using a Linear Congruential Pseudo-RNG

u/DataMeta

64 bytes: t?r=(5*r+1)%256:r=0,x.beginPath(x.stroke()),x.arc(960,540,r,0,7)

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veubeke

function u(t) {

T=t<1?x.translate(960,540,c.width^=0):(t-1)**2
x.font='bold 8em"'
x.fillStyle='#000'
x.rotate(T)
x.fillText('circle',-15,0,(t<1?S(t):1)*500)

Apr 22 2020 5:48 PM UTC

}// 140/140

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Literal #circlechallenge

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New_Core

function u(t) {

x.font='6cm a'
for(i=7-~~t%8;i--;)x.beginPath(),x.setTransform(C(a=i/1.1+t)*2,S(a)*2,S(a)*2,-C(a)*2,960,540),x.fillText("🍕",-40,-30)

Apr 22 2020 2:09 PM UTC

}// 132/140

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the best circles are served warm #circlechallenge

u/donbright

lol

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KilledByAPixel

remix of d/18406 by u/KilledByAPixel

function u(t) {

for(c.width|=i=z=1001;i--;)
x.arc(z,540,500,q=S(i*Math.PI*99/1e3+t/z)*t+1.57,q)
x.fill()

Apr 22 2020 4:56 AM UTC

}// 88/140

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u/KilledByAPixel

#waitforit
u/ersagun

#circlechallenge
u/joeytwiddle

One of the best examples of this effect IMO #trippy
u/donbright

oh my gourd

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KilledByAPixel

function u(t) {

with(x)c.width|=0,
fill(arc(960,520+S(t)*49,300,0,7)),
beginPath(filter=`blur(${4-S(t)}em`),
fill(ellipse(960,900,290,60,0,0,7))

Apr 22 2020 4:34 AM UTC

}// 128/140

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⬤ #circlechallenge

u/SockTaters

it's so ominous

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DaSpider

function u(t) {

A=Array(s=2e3).fill().map(Math.random)
for(i=s;i--;(a-.5)**2+(b-.27)**2>.05?0:x.fillRect(a*s,b*s,5,5))a=A[i],b=A[s-i]

Apr 21 2020 11:42 PM UTC

}// 117/140

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#circlechallenge Monte Carlo Method

u/DaSpider

Using only good old Pythagoras. This method can be used to estimate π ≈ 4*(number of points in the circle / total number of points) // t?1:d=g=0;A=Array(s=6e3).fill().map(Math.random);for(i=s;i--;(a**2+b**2)**.5<=1?d++:1)a=A[i],b=A[s-i];g+=s;throw(4*d/g)
u/joeytwiddle

Very cool!

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BriSeven

remix of d/18368 by u/veubeke

function u(t) {

x.fillStyle="#0001"
x.fillRect(960,540,C(100*t|0)*300,S(100*t|0)*300)

Apr 21 2020 7:17 AM UTC

}// 69/140

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u/sigveseb

#circlechallenge

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veubeke

function u(t) {

x.fillRect(960,540,C(t)*300,S(t)*300)

Apr 21 2020 4:40 AM UTC

}// 37/140

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How are you drawing circles?

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tomxor

remix of d/18338 by u/rodrigo.siqueira

function u(t) {

eval(unescape(escape`𭀿𪰽𭀪𚠸𞡷👣𛡷𪑤𭁨🐹𞐻𩠽𚁘𛁙𛁮👷𚐽🡘🁮🱦𚁘𚡘𛑙𚡙𛐮𞀬𜠪𦀪𦐫𛠲𛁮𚰱𚐺𨁨𬱬𚀤𮱮𚠸𯐠𞐹𙐤𮱓𚁮𛰶𚡴𚠪𛠵𚐪𭱽𙑠𞱦𫱲𚁩🐶𩐳𞱩𛐭𞱸𛡦𪑬𫁓𭁹𫁥👦𚀨𦀭𝐰𚱫𚐯𪰭𜠭𜰶𜠱𞀵𩐭𞀬𜐭𚁙𛐲𞀫𪰩𛱫𚐩𮀮𩡩𫁬𤡥𨱴𚁘👩𙑷𛁙👩𛱷𛀱𛀮𜠩`.replace(/u../g,'')))

Apr 20 2020 12:53 AM UTC

}// 140/140

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Color #zoom #julia #fractal using "X<i"

Show more comments…
u/tomxor

For zoom without slowing down use k=t**t, but you will need very precise coordinates. Here are some other coords I found: f((X-50+k)/k+5100096e-9,1-(Y-28+k)/k), f((X-50+k)/k-2,1-(Y-28+k)/k+201113e-7)
u/tomxor

Oops, hitting subpixel rendering differences again... intended for firefox, chrome looks a bit too mushy, change fill pixel to .3 for chrome.
u/joeytwiddle

Pretty nice! 😻
u/13thptr

amazing
u/tomxor

Due to subpixel rendering differences, for Chrome: see d/18346
u/Joachim

Wow! #underrated #colourful How did you make it infinite? Whenever I’ve tried making a Mandelbrot it always pixelates after the first few seconds of zoom ing in.

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katkip

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀽𜑥𜰻𩠽𚁸𛁹𛁮🐨𜰪𭁼𜀩𚐽🡮🱦𚁹𛐲𚡓𚁸𛰹𚱴𚐬𮀭𜠪𤰨𮐯𞐫𭀩𛁮𛐱𚐺𚁓𚁸𚐫𤰨𮐩𚐯𝀫𛠵𞱦𫱲𚁪🐶𜰻𪠭𛐻𚑦𫱲𚁩🐱𜐱𞱩𛐭𞰩𮀮𩱬𫱢𨑬𠑬𬁨𨐽𩠨𪐭𝐵𛁪𛐳𜰩𛁸𛡦𪑬𫁒𩑣𭀨𪐪𞐬𪠪𞐬𞐬𞐩`.replace(/uD./g,''))) // HailXaTuring

Apr 18 2020 12:27 PM UTC

}// 140/140

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distorting a pattern via #recursive rule

u/katkip

c.width=1e3;f=(x,y,n=(3*t|0))=>n?f(y-2*S(x/9+t),x-2*S(y/9+t),n-1):(S(x)+S(y))/4+.5;for(j=63;j--;)for(i=111;i--;)x.globalAlpha=f(i-55,j-33),x.fillRect(i*9,j*9,9,9)
u/Xen

love it!

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