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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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jylikangas

function u(t) {

eval(unescape(escape`睩瑨⡸⥦潲⡡牣⠭㤬樽㌬眽挮睩摴栽㌰〬〬㘩㭪ⴭ㬩景爨椽㄰㭩ⴭ㭢敧楮偡瑨⡦楬氨慲挨堽㤹⭓⡡㴮㜹⩩⬹㔭琥ㄯ⸶⨡⡴☳⵪⤩⩲ⰶ〫䌨愩⩲⼲⭪⨲㜬㜭横㈬〬㜩⤩ⱦ楬汓瑹汥㵒⡘ⱔ⡘⤪眬眩⥲㴳㠪℡椫椥㈪ㄶ`.replace(/u(..)/g,"$1%")))

Nov 26 2018 8:06 PM UTC

}// 140/140

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White crane playing Rubik's cube. Don't ask. :)

u/jylikangas

Uncompressed 140b cube... for(c.width=-1,j=3;j--;)for(i=9;i--;x.beginPath(x.fill(x.arc(150+S(a=.79*i+95-t%1/.6*!(t&3-j))*r,60+C(a)*r/2+j*27,5-j,0,7))))r=38*!!i+i%2*16
u/lionleaf

#cube
u/BuRRak

This is so random and I love it

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pavel

function u(t) {

with(x)for(j=9;--j;)for(i=2<<j,f=6.28/i;i--;fill())for(beginPath(k=2);k--;fillStyle=i%2?'#fff':R())arc(960,540,k*190*j**.5,a=(i+t%2)*f,a+f)

Nov 23 2018 4:55 AM UTC

}// 139/140

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Black and white spinners #beesandbombs

u/katkip

1.5 dimension fidget spinner
u/BackendForth

Looks like a rotary encoder.

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jylikangas

function u(t) {

for(c.width=i=-9;i++;R=a=>x.lineTo(150+S(A=3-j?t+37*a:0)*50*j,15*j*j+C(A)*!!A*j*9*C(t)))for(j=3;x.beginPath(x.stroke()),R(i),--j;R(i+1))R(i)

Nov 17 2018 10:09 AM UTC

}// 140/140

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Diamond

u/aleamb

cool! #wireframe #d3 #perspective
u/f8f82804

I don't think this actually uses a perspective transform...

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rnbw

function u(t) {

c.width^=0;x.fillStyle='#5b9';for(j=0;j<12;j++)for(i=0;i<22;i++){x.beginPath(x.fill(x.arc(99*i,99*j,S(t*3+i*3.14+j*3.14)*20+49,0,7)))}

Nov 16 2018 7:32 PM UTC

}// 134/140

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oooooh, circles

u/Xen

Nice
u/sigveseb

cool style

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f8f82804

remix of d/10658 by u/f8f82804

function u(t) {

for(c.width|=i=13;i--;x.lineTo(967+(y-1?0:1e3*S(p)/z),1e3*y/z))y='011112101211'[i],z=y-1?3:3+C(p=t+1.57*'012340302014'[i]);x.fill('evenodd')

Oct 25 2018 5:41 PM UTC

}// 140/140

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#d3 #perspective #octahedron

u/pavel

Here is 12 characters saved: c.width^=i=0;for(y of'111121012110')x.lineTo(960+y%2*S(p=t+1.6*'123403020140'[i++])*(z=1600/(3+y%2*C(p))),y*z);x.fill('evenodd')
u/f8f82804

using 1.6 to approximate Math.PI/2 is OK, but you should change all the 4s to 0s in the second data string, just to minimze the aggregate angular error. I used 4 for clarity, because 1.57 is accurate enough that the error is hard to notice. With 1.6 you can notice that one edge is longer than the others. c.width^=i=0;for(y of'111121012110')x.lineTo(960+y%2*S(p=t+1.6*'123003020100'[i++])*(z=1600/(3+y%2*C(p))),y*z);x.fill('evenodd')

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yonatan

function u(t) {

c.width=-1
f=(u,v,a,r)=>r<1?x.lineTo(u,v):f(u+S(a)*r,v+C(a)*r,a*(z=0|t)+t/z,r/3)
for(i=1e3;i--;)j=i*2*Math.PI/999,f(150,84,j,55)
x.stroke()

Oct 17 2018 6:43 AM UTC

}// 139/140

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u/BalintCsala

What a coincidence https://math.stackexchange.com/questions/183…
u/yonatan

Wow! that's exactly how this works (circles around circles around circles)
u/katkip

Awesome
u/joeytwiddle

Yeah these wobbly circles are cool #spirograph #pattern
u/katkip

this is a low iteration #fractal

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BalintCsala

function u(t) {

eval(unescape(escape`挮睩摴栽㔰〻砮獣慬攨㈰ⰲ〩㭸⹦楬汓瑹汥㵠⌰〰㍠㭦潲⡩㴸㭩ⴭ㭸⹦楬氨⤩景爨砮扥杩湐慴栨樽㘰⤻樭ⴻ⥸⹬楮敔漨䌨愽横⸱〴⤪⡲㴨椫㘫⡪⭩⤥㈪⠨欽匨樯㄰⭴⨲⭩⼵⤩㰰㼰㩫⤩⼲⤫ㄳⱓ⡡⤪爫㜩`.replace(/u(..)/g,"$1%")))

Sep 13 2018 8:47 AM UTC

}// 136/140

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Inspired by a beesandbombs tweet

u/f8f82804

#beesandbombs
u/Galaxtone

Decoded: c.width=500;x.scale(20,20);x.fillStyle=#0003;for(i=8;i--;x.fill())for(x.beginPath(j=60);j--;)x.lineTo(C(a=j*.104)*(r=(i+6+(j+i)%2*((k=S(j/10+t*2+i/5))<0?0:k))/2)+13,S(a)*r+7)
u/Xen

Love It!

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BalintCsala

function u(t) {

c.width=500
x.scale(20,20)
for(X=20;X--;)for(Y=20;Y--;x.fill())for(i=6,x.beginPath();i--;)x.lineTo(C(a=i*1.04+S(t))+X*2+Y%2,S(a)+1+Y*1.7-1)

Sep 11 2018 7:13 PM UTC

}// 139/140

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Works everywhere

u/joeytwiddle

Very good!
u/joeytwiddle

Inspired by: https://twitter.com/beesandbombs/status/1006…
u/f8f82804

#beesandbombs

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cantelope

function u(t) {

eval(unescape(escape`景爨瘽㌴〬眽⡣⹷楤瑨簽〩⼲ⱸ⹦楬汒散琨〬〬眪㈬瘪㐩Ⱪ㴹㤻椭ⴻ⥦潲⡪㴵㤻樭ⴻ⥘㵩⼲ⴲ㔭䌨琩ⱙ㴵⭓⡩⼵⤪匨樯㔫琪㌩ⱸ⹦楬汓瑹汥㵠桳氨⑻太㤹紬㄰〥ⰵ〥怬砮晩汬剥捴⡷⭘⽪⩷ⱙ⽪⩷ⱳ㴹㤯樬猩`.replace(/u(..)/g,"$1%")))

Aug 19 2018 6:44 PM UTC

}// 138/140

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Xen

function u(t) {

for(c.width|=i=9;i--;)for(j=4;j--;)x.fillRect(400+i*99+S(t)*300-T(j*t),400+j*50+T(t*i),50,50)

Jul 26 2018 6:17 PM UTC

}// 93/140

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#default #glitch

u/fujimotos

Cooool.