Dweets awesomed by u/jellyedwards

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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pavel

remix of d/18322 by u/pavel

function u(t) {

for(let i=1920,f=(x,y,n=256)=>x*y<n?f(x*x-y*y-.8,2*x*y+.156,n-1):1-n/256;i--;x.fillRect(i,t*180,1,3))x.globalAlpha=f(i/540-16/9,1-t/3)

Apr 18 2020 8:32 AM UTC

}// 134/140

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#julia set for c = −0.8 + 0.156i

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u/pavel

Using x*y<n instead of the normal n&&x*x+y*y<2 is much shorter and creates the black whisps that look pretty cool.
u/pavel

This version makes it easy to play with different values of c. You can find some in https://en.wikipedia.org/wiki/Julia_set#Quad…
u/pavel

https://en.wikipedia.org/wiki/Julia_set#Quad…
u/pavel

Is link pasting broken?
u/Xen

Sexy!
u/katkip

wow
u/katkip

https://en.wikipedia.org/wiki/Julia_set
u/rodrigo.siqueira

Awesome and fast. I am remixing it to add color schemes and colorization methods.
u/Qwitter

SO FAST!

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pavel

remix of d/12336 by u/pavel

function u(t) {

for(i=t?w=600:a=b=0;i--;x.fillRect(w*b,w-w*a,1,1))[a,b]=[[3.4*a+b/6,a-b,b-a,0][q=Math.random()**t*4|0]/4,[3.4*b-a/6+2,a+b+1,a+b+.5,b][q]/4]

Apr 17 2020 11:24 PM UTC

}// 139/140

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Barnsley #fern #fractal #leaf #uncompressed

u/pavel

This version is also #improved with a #grow effect and a cap on how dark the image gets if you leave it for a while.
u/Xen

nice!

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KilledByAPixel

remix of d/18260 by u/KilledByAPixel

function u(t) {

for(r=Math.random,j=4e3;--j;x.fillRect(960-Y*R,640-C*R,t<30,1))C=C*T--?Y*Y-C*C+(Y=2*C*Y+B,A):A=r(Y=B=r(T=R=440)*6-3)*3-1

Apr 17 2020 10:20 PM UTC

}// 120/140

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Triangle #Fractal

u/tomxor

Wow, gnarly!
u/UEZ

looks like the #illuminati symbol

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Cloud

function u(t) {

for(c.width|=i=30;i--;){
x.lineWidth=5
y=S(t*4-i/2)*(70-i)
x.ellipse(960, 540-(y+2), 50*i, 25*i, 0,0,7)
x.stroke()
x.beginPath()
}

Apr 17 2020 7:11 AM UTC

}// 130/140

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#wave

u/vain

Very nice!

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pavel

function u(t) {

for(c.width=i=640,n=32,q=2*t%1*n|0;i--;x[X>7&X<12&[810,865,1858,9808][q>>3]>>i/8+X+6?'fillRect':'strokeRect'](X*n-q,(i&-n)-q,n,n))X=i%n

Apr 16 2020 7:25 PM UTC

}// 135/140

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Keep Gliding Mr Conway

Show more comments…
u/pavel

#gameoflife #glider
u/pavel

https://www.reddit.com/r/perfectloops/commen…
u/Xen

love it!
u/joeytwiddle

#tribute
u/rodrigo.siqueira

Wow! I've been using this Glider image (also known as HACKER EMBLEM) for years as my computer wallpaper, here is full hd version of my wallpaper: https://in.bot/agi/Hackers-emblem-Carbon-Gli…
u/Qwitter

Life was definitely a gateway drug for me as well.

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rodrigo.siqueira

remix of d/18262 by u/KilledByAPixel

function u(t) {

c.style.filter=`sepia()invert(`
for(P=j=2e4;j--;j%99||(T=P=S(t+j)*2,R=C=T*2))
P=P*P-C*C+(C=2*C*P+R,T),x.fillRect(C*450+960,P*450+700,1,1)

Apr 15 2020 12:59 AM UTC

}// 137/140

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Particle collision inside a hadron collider #particles

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doughno

function u(t) {

w=1920
h=1080
for(i=0;i<16;i++){
x.fillStyle=i%2?"#000":"#FFF"
s=(350+i*40)*C(t*1.5)-i*100
a=s+600
if(a>0)
x.fillRect((w-a)/2,(h-a)/2,a,a)
}

Apr 15 2020 12:54 AM UTC

}// 140/140

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u/sigveseb

Sweet
u/Xen

nice!

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BriSeven

function u(t) {

eval(unescape(escape`挮睩摴桼㵮㴶㐻景爨樽渻樭ⴻ⥦潲⡩㵮㭩ⴭ㭸⹦楬汒散琨ⴲ㔬㠰⭃⡡⨴⵴⨴〩⨳〭䌨㌪樯渫㤩⨵〬㈰ⰲ〩⥸⹦楬汓瑹汥㵒⠲㔵⵪⨳ⱪ⤬砮獥瑔牡湳景牭⡃⡡㴶⸲㠪椯渫琩⨲ⱓ⡡⤬ⵓ⡡⤪㈬䌨愩ⰹ㔰ⰵ〰⭪⨷⤠`.replace(/u(..)/g,"$1%")))

Apr 14 2020 11:28 AM UTC

}// 139/140

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A tasty bella pepper.

u/sigveseb

Mmm makes me hungry
u/BriSeven

Ages ago I had a super long dweet that I couldn't post, that was something like 3d lighted aliens made from randomized particles. The trickiest thing about them was the z-sorting. But, you kinda get that for free if you carefully draw in layers along the axis you're rotating on. Painter's algorithm in essence, but the data is structured so you don't have to run a sort.
u/BriSeven

one of these days I'll understand the BSP algorithm

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jellyedwards

function u(t) {

c.style=`background:linear-gradient(#000, #00F, #FFF)`
c.width=500
for(i=7;i--;x.fillText("👫🏻",(i+S(t)-1)*95,300))
x.font='70pt A'

Apr 13 2020 2:15 PM UTC

}// 130/140

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river #dance from the waist up #default

u/jellyedwards

shite should have said #dancing I guess

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rep_movsd

function u(t) {

eval(unescape(escape`𭀾𛠲𯁼𚁣𛡳𭁹𫁥𛡦𪑬𭁥𬠽𙱢𫁵𬠨𜑶𪀩𪑮𭡥𬡴𚀱𚐧𛁁👷🐱𞐲𜀬𠠽𪀽𜐰𞀰𚐊𩡯𬠨𨰮𭱩𩁴𪀽𭰬𦀽𠐬𦐽𠠬𪐽𭰪𝀻𪐭𛐻𚑸𛡦𪑬𫁓𭁹𫁥👒𚁩𛰴𝐬𜐵𜀬𪐥𞐩𛁸𛡦𪑬𫁒𩑣𭀨𦀽𚁘𜐽𦀫𠰨𦐩𚠲𝐩𙑷𛁙🐨𦐱👙𚱓𚁘𚐪𝰩𙑨𛀱𞐬𞐩𛁩🐽𭰪𜰦𙠨𠐽𦀬𠠽𦐩`.replace(/u../g,'')))

Apr 13 2020 1:26 PM UTC

}// 140/140

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Thunderstorm

u/sigveseb

Cool!
u/rep_movsd

#storm

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