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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.

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lionleaf

remix of d/9123 by u/Xen

function u(t) {

for(Z=i=1e3;i--;x.fillStyle=`hsla(${t*9},99%,40%,.01)`)
x.fillRect(Z+2*Z*C(t*i),500+Z*S(t-i),9,i),x.rotate(T(t))

Aug 5 2018 7:18 PM UTC

}// 112/140

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u/katkip

#sun too.
u/donbright

when the color changes its really cool looking

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Xen

remix of d/9122 by u/katkip

function u(t) {

for(Z=i=1e3;i--;x.fillStyle=`hsla(${t*t*9},99%,40%,.01)`)
x.fillRect(Z+2*Z*C(t*i),500+Z*S(t-i),9,i),x.rotate(T(t)/4e5)

Aug 5 2018 7:05 PM UTC

}// 118/140

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katkip

remix of d/9121 by u/Xen

function u(t) {

for(Z=i=1e3;i--;x.fillStyle=`hsla(${t*15},90%,50%,.1)`)
x.fillRect(960+Z*S(t)*C(t)*C(t*i),500+500*S(t),9,9)

Aug 5 2018 7:00 PM UTC

}// 107/140

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Xen

function u(t) {

for(Z=i=1e3;i--;x.fillStyle=`hsla(${i+t*99},90%,50%,.1)`)x.fillRect(Z+Z*C(t-i),500+500*S(t),9,9)

Aug 5 2018 6:54 PM UTC

}// 96/140

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u/lionleaf

#remix_chain first dweet

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katkip

function u(t) {

for(i=0;i<24;i++) x.fillRect(-400+i*100+S(t)*t*i,C(t)*500+S(i/t)*590,C(t)*1e2,C(t)*200);x.fillStyle=R((t*2*i)%256,(t*2*i)%256,(t*2*i)%256)

Aug 5 2018 5:12 PM UTC

}// 138/140

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*~The~ _Shredder_*

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katkip

remix of d/3381 by u/sniok

function u(t) {

c.width=570;l=20;f=30;for(j=l;j--;)for(i=f;i--;x.fillStyle=R(i*l,j*l,C(t)*255),x.fillRect(S(t/2+5*j)*2+i*l-l,j*l+T(t/2+5+l/i)*l-40,f,f)){}//

Aug 5 2018 11:37 AM UTC

}// 140/140

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stiaje

remix of d/9115 by u/richev

function u(t) {

c.width|=0
x.stroke()
x.translate(960,540)
h=l=>x.fillRect(-5,-50,9,l)
r=a=>x.rotate(a)
r(7*t+3)
h(500)
r(t/17-t*7+7)
h(350)

Aug 5 2018 11:16 AM UTC

}// 124/140

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Golfed by removing a lot of accuracy.

u/richev

nice!

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stiaje

remix of d/9108 by u/magna

function u(t) {

with(x)for(i=300;i--;stroke())beginPath(strokeStyle=`hsl(${290-i},99%,60%`),arc(960,1e3,390+i,0,7),font="9em A",fillText('☁️     ☁️',99,250)

Aug 5 2018 11:07 AM UTC

}// 140/140

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Squeezed in some clouds based on golfing by u/magna and the cloud code from u/richev

u/stiaje

Any ideas for more interesting positioning of the clouds?

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joeytwiddle

function u(t) {

['#000','#ff0','#39f','#fff'].map((C,i)=>x.beginPath(x.fillStyle=C)|x.arc(i%2?1050*i-1490:960,i<3?540:840,2310-1305*i+195*i*i,0,7)|x.fill())

Aug 5 2018 9:45 AM UTC

}// 140/140

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James W. Cadle's Flag of _____, with help from mycurvefit.com #flag

u/joeytwiddle

I think this might have been drawn on Dwitter before, but I can't find that dweet right now. I love the simple design!
u/katkip

Me too! It's minimalistic.
u/joeytwiddle

A fun TED talk about flag design: https://www.youtube.com/watch?v=pnv5iKB2hl4

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richev

function u(t) {

c.width|=0
q=6.28
x.stroke()
x.translate(960,540)
h=l=>x.fillRect(-5,-50,10,l)
r=a=>x.rotate(a)
r(q*t+q/2)
h(500)
r(t*q/120-t*q+q);
h(350)

Aug 5 2018 8:21 AM UTC

}// 138/140

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Fast clock hands...ran out of characters to draw the outline of the clock face.