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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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zanella

remix of d/10234 by u/Purpzie

function u(t) {

c.width|=0
r=[0,1];for(i=2;i<1e3;i++)r.push(r[i-1]+r[i-2])
x.font='99px"'
x.fillText(r.join(' '),-200*t,500)

Oct 4 2018 5:41 PM UTC

}// 108/140

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Bring back the marquee tag!! #90s

u/donbright

i really like this one for some reason i cant quite put my finger on

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cantelope

remix of d/10234 by u/Purpzie

function u(t) {

for(c.width=-1,з=0,_=[ф=1,п=ф];з++-20;)_.push(п+=_[з-ф]);x.fillText(_,0,9)

Oct 4 2018 4:42 PM UTC

}// 74/140

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u/magna

#fibonacci
u/magna

18 characters longer, avoids loop: x.fillText([c.width=-1,1,2,3,5,8,13,21,34,55,89,144,233,377,610,987,1597,2584,4181,67],-3,9) :D
u/donbright

#oeisA000045

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atgz

remix of d/10238 by u/atgz

function u(t) {

eval(unescape(escape`挮睩摴桼㵱㴮㈹㤲㭸⹴牡湳污瑥⠹㘰ⰵ㐰⤻景爨椽〻椼㌲㤻椫⬩砮牯瑡瑥⡱⬨椥㈲㼰㩱⼲⤫⡩㰱⤪琩ⱸ⹦楬汓瑹汥㵒⠨愽⠨椯㈲簰⭴⼲⤫琯㌮㈩┱㔪㈰⤬䌨愯㐩⨲㔰ⱓ⡡⼱〩⨲〰⤬砮晩汬剥捴⡡ⱡⱷ㵡⨪⸷㔬眩`.replace(/u(..)/g,"$1%")))

Oct 4 2018 9:10 AM UTC

}// 140/140

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Purpzie

remix of d/2168 by u/jczimm

function u(t) {

with(x)t<9&&beginPath(fill()),fillStyle=R(S(t*23)*127+99,0,99),arc(960+T(t*10)*50,540+S(t/2)*30,t*30,t*15-1,t*15)

Oct 3 2018 7:48 PM UTC

}// 113/140

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feathery paint strokes

u/donbright

cool

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donbright

remix of d/10189 by u/QXY

function u(t) {

K=256
X=t**8%2e3
Y=t**9%2e3
for(j=t**7%69+29;j>0;j--){x.lineWidth=3
x.strokeStyle=R(Y%K,K-j,X%K)
x.beginPath()
x.arc(X,Y,j,0,7)
x.stroke()}

Oct 3 2018 1:07 AM UTC

}// 139/140

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Xen

remix of d/10189 by u/QXY

function u(t) {

for(c.width|=i=99;i--;x.stroke())x.lineWidth=i,x.beginPath(),x.arc((o=i&1?-99:99)*2*C(t)*S(t*.2)+960,o*5*S(t*3)*C(t)+520,i**2,0,7)

Sep 30 2018 9:57 PM UTC

}// 130/140

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Xen

remix of d/10149 by u/Purpzie

function u(t) {

for(Z=i=99;i--;x.fillRect(i*30,C(2*t+3*i)*Z,19,Z))x.fillStyle=`hsl(${i*9+t*Z+S(t)*3e2} 60%${S(t*4)*25+50}%`;x.drawImage(c,C(t*Z),3+C(t)*2)

Sep 28 2018 10:18 PM UTC

}// 138/140

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u/magna

Woot!

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Purpzie

remix of d/9998 by u/SuperFromND

function u(t) {

r=_=>Math.random()-.5;with(x)fillStyle=`hsl(${t*100} 50%50%)`,drawImage(c,r()*99,r()*99),font='500px"',fillText('HELLO',175,700)

Sep 27 2018 8:02 PM UTC

}// 128/140

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hello

u/cantelope

lol

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katkip

remix of d/894 by u/iverjo

function u(t) {

i=frame;for(j=1080;j--;){a=b=0;for(k=35;k--&&a*a-b*b<4;)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1,a=c;x.fillStyle=R(0,k);x.fillRect(i*2,j,C(k)*2,5)}

Sep 27 2018 2:24 PM UTC

}// 140/140

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Mandeldistort #mandelbrot #slow_render #scanline #fractal

u/katkip

#waitforit it actually gets better than I expected
u/joeytwiddle

Nice fresh style

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prplz

remix of d/10060 by u/prplz

function u(t) {

for(let X,Y=16,A=S(t),B=C(t);16+Y--;)for(X=32;32+X--;x.fillRect(X+32<<5,Y+16<<5,32,32))x.fillStyle=R(r=(X*B*A-Y*A*A^X*A*A+Y*B*A)<<4&255,0,r)

Sep 26 2018 1:04 AM UTC

}// 140/140

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#rotozoom