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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

function u(t) {

for(i=2e3;i--;)x.fillStyle=R(z=100+C(i*2.3+t*39)*100,z,z*S(t+i)),x.beginPath(),x.ellipse(960+S(i*2+t)*i,540+C(i*2+t)*i,19,49,t,0,7),x.fill()

Oct 29 2019 6:41 PM UTC

}// 140/140

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Bee spiral

u/Xen

smooooth

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KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁦𪑬𫁒𩑣𭀨𞐵𜰬𝐴𜀬𜐴𛁣𛡷𪑤𭁨𯀽𜀩𛁦𫱮𭀽𙰲𜑥𫐢𙰬𩡩𫁬𥁥𮁴𚀢𥁩𫑥𘁴𫰠𩡬𫱡𭀮𘠬𪐽𝀰𛀲𝠰𚐻𪐭𛐻𨡥𩱩𫡐𨑴𪀨𩡩𫁬𚁥𫁬𪑰𬱥𚀱𜀴𜀭𪐪𜠬𝀶𜀫𪐪𜰫𤰨𭀩𚠴𞐬𝰪𪐬𞐪𪐬𜀬𜀬𝰩𚐩𚑦𪑬𫁓𭁹𫁥👒𚀲𝐵𛁱🐲𝐵𛑩𚠷𛁱𚐻`.replace(/u../g,'')))

Oct 29 2019 4:15 PM UTC

}// 138/140

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"We all float down here." 🎈

Show more comments…
u/Xen

Hiya Georgie!
u/KilledByAPixel

"I'm not supposed to take stuff from strangers."
u/Xen

pop pop pop! 😂😂
u/KilledByAPixel

"You'll float too!"
u/KilledByAPixel

🤡
u/KilledByAPixel

#ScaryMovies

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metamero

function u(t) {

for(i=999;--i;i&1&&x.fillRect(z*(i%23),z*(i/23|0),z,z))z=90

Oct 29 2019 3:37 PM UTC

}// 59/140

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59B checkered pattern ! new ultra-golf challenge ! rules proposed on discord

u/New_Core

I didnt read the rules but here is a 48B for(i=166;i--;)x.fillRect(i%24*90,i%14*90,90,90)
u/pavel

Would be good to put the rules here... Can the scale be not 90? Seems like a bad number. 120 fits nicely horizontally and vertically, I'd choose that. Or a power of two for possible bit twiddling.
u/metamero

rules of this one: - full render on first/each frame - full resolution - exact 12 squares on vertical

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katkip

function u(t) {

c.width|=p=64;x.arc(960+C(t)*200,540+S(t)*200,99,0,7),x.clip();for(i=p;i--;)for(j=i;j--;)(j^i)%2?x.fillRect(i*20+C(t)*p,j*20+S(t)*p,20,20):x

Oct 29 2019 3:03 PM UTC

}// 140/140

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clip is in trending now so I tried it

u/Xen

Sexy
u/joeytwiddle

#amiga

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username

remix of d/6650 by u/nickd3000

function u(t) {

s=20;v=8*s;for(i=60*v;i-=2;)l=i%v,m=i/v|0,k=1+S(C(l/15)/C(m/17)+t*4),x.fillStyle=R(n=k*v+m*2,n+m,n+k*v),x.fillRect(l*s,m*s,s*2,s)

Oct 29 2019 1:55 PM UTC

}// 129/140

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golf and 60 fps u/41407

u/username

#randomremix no 34
u/username

#randomremix no 35

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tomxor

remix of d/16361 by u/KilledByAPixel

function u(t) {

a=t>>3;x.arc(r=360,r+a%2*r,r,b=(0|t-a)%4/.64,b);x.stroke()

Oct 29 2019 1:02 PM UTC

}// 58/140

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58 byte #cube

u/tomxor

... no one said it had to spin :P
u/katkip

#wireframe
u/magna

#waitforit

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asteriskman

function u(t) {

n=c.width=999
with(x){font='4em"'
for(i=0;i<99;)fillText('💧',S(i++)*n,9*(t*38+i)%560)
fillStyle='#5dadec'
fillRect(0,562-t*2,n,t*2)}

Oct 29 2019 11:42 AM UTC

}// 132/140

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Inktober Day 29 - Injured

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keithclark

remix of d/16357 by u/pavel

function u(t) {

for(c.width=i=99;a=i-->>3;x.ellipse(50,29+a%2*39*C(t)-C(t)*19,29,29*Math.abs(S(t)),0,q=(i-a+t)%4*11/7,q))x.stroke()

Oct 29 2019 10:26 AM UTC

}// 115/140

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u/katkip

#wireframe

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KilledByAPixel

remix of d/16361 by u/KilledByAPixel

function u(t) {

c.width|=0
for(i=40;a=i-->>3;x.stroke())x.arc(960,400+a%2*300,300,b=(i-a+t)%4/.64,b)

Oct 29 2019 2:40 AM UTC

}// 84/140

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Native resolution #cube

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KilledByAPixel

remix of d/16357 by u/pavel

function u(t) {

for(c.width=i=49;a=i-->>3;x.arc(25,9+a%2*9,9,b=(i-a+t)%4/.64,b))x.stroke()

Oct 29 2019 1:03 AM UTC

}// 74/140

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74 bytes #cube

u/tomxor

O_O