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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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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katkip

remix of d/17030 by u/danschormans

function u(t) {

x.fillStyle=`hsl(${t*49} 99%50%)`,x.fillRect(960+S(t)*t*9,540+C(t)*t*9,45,45)

Jan 1 2020 12:51 PM UTC

}// 77/140

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golfed 122->77

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taupelink

remix of d/15471 by u/taupelink

function u(t) {

f=frame;c.width|=0;x.translate(960+500*S(t),540);x.fillStyle=R(0,f>>8,f%255);x.rotate(t);x.font=((2+C(f/20))*9)+'em"';x.fillText("MMXX",0,0)

Jan 1 2020 2:31 AM UTC

}// 140/140

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MMXX

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McNoodle

function u(t) {

c.width+=0;x.beginPath();for(let i=0;i<130;i++)x.lineTo(Math.random()*1920,Math.random()*1080);x.fill();

Dec 26 2019 1:45 PM UTC

}// 104/140

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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

u/Xen

Danger, danger,, DAnger!!

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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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sybarita

remix of d/16958 by u/sybarita

function u(t) {

c.width=3333
c.height=10000
for(i=0;i<46;i++,x.fillStyle=R(i*6,200*C(3*t),255-(5*i)))x.fillRect(1500,920+20*i*S(.5*t),i*25*C(i*t),8*C(i*t))

Dec 24 2019 4:12 AM UTC

}// 139/140

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last one ok!

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sybarita

remix of d/16957 by u/sybarita

function u(t) {

c.width=3333
c.height=3333
for(i=0;i<46;i++,x.fillStyle=R(i*6,200*C(3*t),255-(5*i)))x.fillRect(1500,920+20*i*S(2*t),i*25*C(i*t),8*T(i*t))

Dec 24 2019 4:08 AM UTC

}// 137/140

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i really don't know what to call this lmao

u/joeytwiddle

A really difficult bridge to cross?

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Xen

remix of d/16947 by u/Odog8

function u(t) {

for(b=n=300;b--;x.fillText(x.fillStyle=`hsl(${t*n},99%,9%,.02)`,850+6*b*S(a*n+t)/z,540+15*b*S(a+t)/z))z=t-S(a=n*n/t)*T(t*n)

Dec 23 2019 7:25 PM UTC

}// 123/140

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remix chain 6

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WILSON

function u(t) {

c.width=1800
for(i=2;i<10;i++)
x.fillRect(700+i*50+S(t)*600,900,430,400) // draw 100x300 rects

Dec 23 2019 9:50 AM UTC

}// 94/140

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myphs

function u(t) {

h=new Date().getTime()/36e5%12
w=h|0
x.font='50em"'
x.fillText(String.fromCodePoint(128336+(h-w>=.5?w+12:w)),400,900)

Dec 22 2019 8:46 PM UTC

}// 117/140

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Emoji Clock

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myphs

remix of d/16935 by u/cant_code

function u(t) {

e=99
d=(a,s,c)=>{
s=s<0?0:s
x.font=s*e+"px a"
x.fillText(c,a*e,7*e)
}
c.width|=0
d(4,7,"🐰")
for(i=t;i<t+6;i+=.45)
d(8+6*S(i),2*C(i),"🥕")

Dec 21 2019 2:20 PM UTC

}// 136/140

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