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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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firegodjr

remix of d/8739 by u/firegodjr

function u(t) {

with(x)for(fillRect(0,0,Y=2e3,Y),k=Y;k--;)arc(960,540,j=550-k/4|0,v=k%4*3.14/2+S(t*3-Y/j)+C(t),v+99/k),stroke(),beginPath(fillStyle="#fff1")

Jun 26 2018 7:37 PM UTC

}// 140/140

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u/rep_movsd

Cybernetic rose
u/rep_movsd

#underrated

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Xen

remix of d/4996 by u/Bugsy

function u(t) {

x.arc(X=1e3,299,2e3,c.width|=0,7);for(i=X;i--;)x.rect(X+T(t+t^i)*i,540+300*S(t*t+i/t*t),19,9);x.fill("evenodd")

Jun 25 2018 12:37 AM UTC

}// 111/140

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Shouts 2 bugsy!

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magna

remix of d/8686 by u/aemkei

function u(t) {

x.font=a="3em' "
x.fillText("ᴀscii",C=0,40)
d=x.getImageData(t*3,Y=t*120%82,2,D=3).data
for(;D<19;)C+=!d[D+=4]
x.fillText(a[C],t*54,Y*22)

Jun 22 2018 12:36 PM UTC

}// 137/140

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u/aemkei

Very clever! I like that assignment/reuse.
u/aemkei

Could be 128 bytes: x.fillText(a=x.font="3em' ",C=0,40);for(d=x.getImageData(t*3,Y=t*120%82,2,D=3).data;D<19;)C+=!d[D+=4];x.fillText(a[C],t*54,Y*22)

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New_Core

remix of d/8639 by u/pythech

function u(t) {

with(x)for(i=9*t,translate(c.height=1e3,500);i-->0;fill())beginPath(fillStyle=`hsl(${i},99%,50%`),arc(5*i,0,20*C(i*.9)+30,!rotate(-3.88),9)

Jun 21 2018 11:49 AM UTC

}// 139/140

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I did also play around with this.. =) I also did a shorter version where I used sin and cos directly on arc x,y instead of using rotate and translate... (didnt get exact same form so I let you guys try that on your own)

u/pythech

Funny how I came up with almost exactly same code d/8677 :D I like yours better though as it's better centered. I first thought the asymmetry made it more stylish but now I regret that choice

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pythech

remix of d/8651 by u/lionleaf

function u(t) {

c.width|=0
with(x)for(translate(900,500),i=7*t;~i--;fill())arc(5*i,!beginPath(fillStyle=`hsl(${i*9},99%,50%`),20*C(i*.9)+30,!rotate(3.88),9)

Jun 20 2018 3:48 PM UTC

}// 140/140

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Golfed back to the circles. Thanks to u/BalintCsala for the hsl trick

u/pythech

Rectangle version looks better anyway

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Xen

function u(t) {

for(i=44;i--;x.fillStyle=R(S(i+t)*i,C(t-i)*i,C(i+t)*i))x.fillRect(i*i+S(t-i)*i,0,22,6e6)

Jun 19 2018 11:40 PM UTC

}// 88/140

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quick test

u/DataMeta

dude, very nice
u/magna

Why 6e6 though? :)
u/Xen

22 width, i=44, 88 bytes,,, 6e6 is almost 66 :-P

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magna

function u(t) {

d=c.toDataURL()
c.width|=0
x.font='4em monospace'
for(i=25;i--;)x.fillText(d.substr(i*61,61),0,i*42+42)

Jun 19 2018 6:07 AM UTC

}// 103/140

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This is not random.

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magna

function u(t) {

c.width+=S(t)*9
for(i=9;i--;)x.fillRect(400+i*100+S(t)*300,400,50,200)

Jun 19 2018 5:33 AM UTC

}// 70/140

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Not clearing canvas in the usual way. #default

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veubeke

function u(t) {

r=Math.random;t*60&15?x.fillRect(X+=9*D+r(x.fillStyle=`hsl(${(D?X/16:-Y/9)+r()*9},90%,50%)`),Y+=9*!D+r(),60,60):X=r(Y=r(D=r()<.5)*1080)*1920

Jun 18 2018 1:38 PM UTC

}// 140/140

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Color fight!

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aemkei

function u(t) {

c.width=500;x.font='9em"';for(i=3;i--;x.fillText(T[0]+T[1]+T[2],40,200))t%6<i+2?T[i]=[...'💰🔔🍒🍌🍉'][(i*t+9*t|0)%5]:S

Jun 17 2018 9:23 PM UTC

}// 114/140

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#slotmachine

u/aemkei

I'm sorry but you can't win here.
u/BalintCsala

#storyOfMyLife
u/aemkei

Now you can "Click to play": d/8645
u/KilledByAPixel

#slots