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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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New_Core

remix of d/8858 by u/New_Core

function u(t) {

b=["screen","color-burn"]
for(i=99;i--;x.globalCompositeOperation=b[i%2])x.fillStyle="#74"+i,x.fillRect(600+500*S(t+i),500+500*T(i+t),i*7,i)

Jul 13 2018 4:53 PM UTC

}// 140/140

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nabbydude

function u(t) {

x.fillStyle=R(a=255-x.getImageData(...P).data[0])
x.fillRect(...P)
d+=(!a||-1)+4
d%=4
P[d%2]+=(d<2||-1)+h*2
P[d%2]%=h*2}P=[h=540,h,1,1]
{d=0

Jul 4 2018 5:26 PM UTC

}// 140/140

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Smallest I could pack Langston's ant

u/micahcowan

Ha. Is it kosher to break out of the function definition body like that? Seems like something u/lionleaf might have on his "to remove" list. :)

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alien

remix of d/8802 by u/alien

function u(t) {

t?1:(a=0,onkeydown=e=>a+=e.which) 
c.width=999
for(i=99;i--;){for(j=99;j--;u=S(i&j)*a){x.fillText(String.fromCharCode(frame-u),i*10,j*10)
}}

Jul 3 2018 9:29 PM UTC

}// 140/140

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press any key ping me if it's broken.

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alien

remix of d/8794 by u/alien

function u(t) {

c.width=500
for(i=0;i<(w=99);i++){for(j=0;j<w;j++){
x.fillText(String.fromCharCode(u=(i^j&j)+frame>>3),i*10,j*10)
x.fillStyle=R(C(u)*w*9)}}

Jul 3 2018 7:22 PM UTC

}// 139/140

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u/aleamb

great!

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alien

remix of d/8793 by u/alien

function u(t) {

c.width=500
for(i=0;i<(w=99);i++){for(j=0;j<w;j++){x.fillText(String.fromCharCode(u=(i^j&j)+frame>>3),i*10,j*10)
x.fillStyle=R(C(u)*w*9)}}

Jul 2 2018 8:40 PM UTC

}// 138/140

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Just click on fullscreen and enjoy the show all known chars displayed in a fractal rain

u/firegodjr

You redefined u, redefining u breaks it. If you switch to edit mode (click and add a space or something) it fixes the issue.

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alien

remix of d/8790 by u/alien

function u(t) {

c.width=500
for(i=0;i<(w=99);i++){for(j=0;j<w;j++){x.fillText(String.fromCharCode(u=(i^j&j)+frame>>3),i*10,j*10)
x.fillStyle=R(C(u^i)*w*9)}}

Jul 2 2018 8:10 PM UTC

}// 140/140

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won't work on mobile android... PCs and laptops are ok

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yokljo

remix of d/8774 by u/Feiro

function u(t) {

with(x)for(k=2e3;k--;beginPath(fillStyle="#0001"))arc(960,540,k/4,v=k%4*1.57+S(t*3-k/280)+t,v+.2),strokeStyle=R((S(t)+2)*50),stroke()

Jun 28 2018 12:55 PM UTC

}// 133/140

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u/firegodjr

Excellent gradients!

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davidsharp

function u(t) {

c.width|=0,s='🕐🕑🕒🕓🕔🕕🕖🕗🕘🕙🕚🕛'
with(x)font="100px a",fillText(s[0]+s[1+2*(((new Date()).getHours()%12)-1)],1000,500)

Jun 26 2018 4:03 PM UTC

}// 113/140

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This is just the time rounded down in hours, there's a bunch of logic that could be golfed away if the clocks string was also golfed down (the first character of each emoji is the same, these also count against the 140 characters)

u/davidsharp

Darn, string should've been 🕛🕐🕑🕒🕓🕔🕕🕖🕗🕘🕙🕚
u/micahcowan

Pretty neat!The -1 doesn't work out for hours at 0 or 12. Could have added 23 (before the % 12) instead of subtracting 1 (or yeah, your string-based fix).
u/micahcowan

#emoji #clock
u/davidsharp

I think I fixed the string, and adjusted the numbers, but then undid a bunch of changes, including my string fix and adjusted the code for the broken string instead 🤦‍♂️

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magna

function u(t) {

c.width|=0
for(i=9;i--;x.fillRect(400+i*100+S(t)*300,400,50,200))
o=S(t+i),v=C(t+i),w=S(t)**7/2,x.setTransform(1+o*w,0,o*v*w,1-(v-o)*w,0,0)

Jun 26 2018 5:38 AM UTC

}// 139/140

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Fixed issue with reassigning u

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micahcowan

function u(t) {

with(x){clearRect(0,0,999,999);[75,99].map((u)=>{F=(v,m)=>(Math.abs(m-(t*u*v)%(2*m)))
beginPath()
arc(F(10,968),F(12,968),30,0,7)
fill()})}

Jun 26 2018 5:28 AM UTC

}// 139/140

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#ball