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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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tomxor

remix of d/16967 by u/katkip

function u(t) {

eval(unescape(escape`挮睩摴栽㈵㘻挮獴祬攽❦楬瑥爺楮癥牴⠧㭹㴳㭰㴨琬温㴾砮晩汬呥硴⡴⹳畢獴爨〬温ⰳ㘬ㄲ⩹⬫⤻瀨怱〠偒䥎吠∤筍㵠䵅剒夠塍䅓Ⅰ索怬琪㴶⤻瀨怲〠䝏呏‱だⱴⴲ㜩㭰⡠剕习ⱴⴴㄩ㭦潲⡴⨽㈻琭ⴭ㤲㸰㬩瀨䴩`.replace(/u(..)/g,"$1%")))

Dec 26 2019 1:06 AM UTC

}// 140/140

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#basic

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pavel

function u(t) {

for(x.fillRect(0,0,i=c.width=960,i);i--;x.fillText(i*i,480+i*C(a)/4,i*.6))k=i%2,x.fillStyle=R(k*i,!k*i,0,.6+S(a=i/20+3*k-S(t))/2)

Dec 25 2019 8:04 PM UTC

}// 129/140

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Merry #christmas

u/pavel

#tree

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yonatan

function u(t) {

t*=44
for(c.width|=i=99;i--;x.fillRect(w+z*(y%8-2),y%4*k,3,-q))z=5e3/(i-t%1),x.fillRect(w=960-z+(S((y=t+i|0)/9)-C(t/9))*z,k=540+z,q=z*2,3)

Dec 25 2019 7:40 PM UTC

}// 138/140

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https://twitter.com/ntsutae/status/120935675…

u/katkip

amazing! #street #road
u/ivylab

Really nice, howwww

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viberfoner

remix of d/16876 by u/katkip

function u(t) {

with(x)for(i=j=360;i--;beginPath(fill(arc(
960+C(t+i*6)*j,
540+S(t+i*6)*j,
Math.abs(C(t+i*9)*100),0,7))))fillStyle=R(i*i,i)

Dec 25 2019 5:33 PM UTC

}// 123/140

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bleb

u/Xen

hail blebs!
u/joeytwiddle

#bleb

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viberfoner

remix of d/16876 by u/katkip

function u(t) {

a=67
with(x)for(fillRect(0,0,2e3,2e3),i=j=360;i--;beginPath(fill(arc(
960+C(t+i*a)*(j*2-i),
540+S(t+i*a)*(i),
i/12,0,7))))fillStyle=R(i*i,i)

Dec 25 2019 4:59 PM UTC

}// 140/140

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First dweet! One of many variations I came up with

u/joeytwiddle

Very nice #loop

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katkip

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐮𨡡𨱫𩱲𫱵𫡤👒𚀩𞱣𛡷𪑤𭁨𚠽𜐻𮀮𬱴𬡯𪱥𤱴𮑬𩐽𙱲𩑤𙰻𮀮𫁩𫡥𥱩𩁴𪀽𞀻𩡯𬠨𪠽𞀻𪠭𛐻𚑦𫱲𚁩🐱𞀻𪐭𛐻𚑸𛡡𬡣𚀹𝠰𚱓𚁩𚠮𞀹𝰪𪠪𪠫𭀩𚠨𝐰𜀭𪠪𞐹𚐬𝐴𜀫𤰨𪐪𛠸𞐷𚡪𚡪𚱪𚱴𚠲𚐪𚀵𜀰𛑪𚠹𞐩𛀰𛀰𛀰𚐻𮀮𬱴𬡯𪱥𚀩`.replace(/uD./g,'')))

Dec 25 2019 3:13 PM UTC

}// 135/140

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#occult multiheptagram

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joeytwiddle

remix of d/11549 by u/joeytwiddle

function u(t) {

for(R=Math.random,i=700;i--;x.fillRect(960+r*C(a),80+y+r/9*S(a),.2,.2))y=896*R(),T=y>768,r=T?30:(y|127)*(y*S(y/300)-2*y%128)/1313,a=9*R()

Dec 25 2019 2:02 PM UTC

}// 137/140

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A quick and dirty Merry #Christmas #tree mix

u/katkip

Awesome!
u/Xen

nicely
u/iverjo

Great!
u/joeytwiddle

I originally felt a little ashamed to post because the distribution of dots is not uniform, hence "dirty", but your kind comments have reminded me that nobody really cares. Indeed, bugs like this can even give an image more character than perfection would. Thanks! 🙏

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katkip

function u(t) {

c.width=200;c.style.background=R();x.fillStyle='lime';x.fillText("> "+(q="throw`merry xmas`").slice(0,(z=frame)%42),20,20);eval(q)//ho ho ho

Dec 25 2019 8:00 AM UTC

}// 140/140

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#console #terminal #xmas

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Leodude123

function u(t) {

c.width=1920
var i=1
//while(true)
{
x.fillStyle = R(188,225*S(t),11,1)
x.fillRect(400+i*100+S(t)*300,400,500,500) 
i++
}

Dec 24 2019 11:40 PM UTC

}// 121/140

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How do I get rid of the lag?

u/katkip

You don't need permanent loops. That will timeout the frame. u(t) is already calling every 1/60 seconds
u/joeytwiddle

That's right. The website is already doing something like while(true) for you (actually requestAnimationFrame())
u/Leodude123

Oh

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Xen

remix of d/16962 by u/Xen

function u(t) {

for(c.width|=i=84;i--;x.lineWidth=5)
x.arc(p=c.width/2,p/2,i*8,i*t/7,i/t)
x.stroke()

Dec 24 2019 8:54 PM UTC

}// 84/140

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