Dweets awesomed by u/magna

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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f8f82804

function u(t) {

c.width^=0;f=(a,b)=>S(a/9)*C(b/7);for(i=213;i--;)for(j=120;j--;f(i,j)-f(99*t,i)+f(t*63,j+t+16*f(t+j,i-t))>.5||x.fillRect(9*i,9*j,9,9));

Jan 2 2019 7:24 PM UTC

}// 135/140

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u/katkip

cows

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New_Core

remix of d/11613 by u/New_Core

function u(t) {

x.font="81px'"
x.drawImage(c,d=-200,d,2320,1480)
for(q=i=450;i--;)x.fillText("⭕",i%23*90+(q*C((a=~~(i/23))/3+t)-q-t*q)%90,a*90+d*S(t)+d)

Jan 2 2019 2:54 PM UTC

}// 136/140

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u/Undefined

You forgot to c.width+=0 lol

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New_Core

remix of d/11613 by u/New_Core

function u(t) {

x.drawImage(c,99,99,1731,891)
x.fillStyle='#0005'
x.fillRect(0,0,2e3,2e3)
for(i=21;i--;x.fillText("👽",i*91,380*S(t+i/9)+560))x.font="89px'"

Jan 2 2019 11:49 AM UTC

}// 139/140

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New_Core

function u(t) {

x.font="81px'"
x.fillStyle="#0003"
for(a=i=294;i--;)x.fillText("🎆",i%21*91,300*S(t)%90+~~(i/21)*90)
t%2<1?x.drawImage(c,99,99,1731,891):0

Jan 2 2019 10:59 AM UTC

}// 137/140

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infinity on and off

u/13thptr

underrated
u/13thptr

#emoji #grid

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ellisk1

function u(t) {

r=t?r:Array(n=1250).fill(n);for(j=n;j-=2;x.fillRect(r[j]+=d*S(a=j%2**(t|0)+t+d),r[j-1]+=C(a)-2,w,w))x.fillStyle=R(w=j/n*200/t,d=3+(t>8)*t*t)

Jan 1 2019 9:48 PM UTC

}// 140/140

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Bonsai

u/katkip

finally something awesome
u/lionleaf

That's amazing! #bonsai #tree #organic #plant
u/DataMeta

Wow
u/hollo47

Impossible.

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rodrigo.siqueira

remix of d/10314 by u/veubeke

function u(t) {

c.width^=0
s=(t%3)**3
x.font="2in'"
for(Y=9;Y--;)for(X=Y+1;X--;)x.fillStyle=R(Y*99,Y*27,0),x.fillText("▲",865+(X*48-Y*24)*s,(Y-4)*46*s+600)

Jan 1 2019 4:36 PM UTC

}// 139/140

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Expanding unicode triangles. German colors.

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u/katkip

German colors? I'm curious to see the Romanian ones.
u/lionleaf

#recursive
u/lionleaf

#zoom
u/username

seemless
u/username

<- this version is not
u/username

^ meant to use an up arrow

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JWinslow23

function u(t) {

x.fillStyle=!(i=t*60%320|0)&&R(c=Math.random()*256,c,c);"㌥崥交&啕䕥ꊤ*㍷䶢&ᅕ䔢ꉅ\nᅕ鴢깂*".charCodeAt(i/16)>>i%16&1&&x.fillRect(i%64*32,i>>6<<5,32,32)

Jan 1 2019 4:24 AM UTC

}// 139/140

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Ring in the New Year!

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keithclark

function u(t) {

for(x.fillRect(x.globalAlpha=.2,q=t%2,2e3,2e3),i=125;i--;x.clearRect(S(t|1)*760+S(i)*v+960,(q*q/2-C(i))*v+380,l=6-q*3,l))v=q*200-S(i*.2)*i*q

Dec 31 2018 9:44 PM UTC

}// 140/140

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New Year Fireworks

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u/13thptr

elegant :)
u/keithclark

change S(i*.2)*i*q for S(i*t>>4)*i*q for varying firework effects (2 chars over the limit tho)
u/katkip

haha i like the variation
u/JWinslow23

If q will only ever be 0 or 1 (t%2), couldn't this just be for(x.fillRect(x.globalAlpha=.2,q=t%2,2e3,2e3),i=125;i--;x.clearRect(S(t|1)*760+S(i)*v+960,(q/2-C(i))*v+380,l=6-q*3,l))v=q*200-S(i*.2)*i*q? That way, the variation also works.
u/keithclark

I opted for what I had because it held the initial shape in the sky for longer before gravity takes hold. Your version works and if you're happy to trade off the initial shape, you could also drop the \2 and save another 2 chars
u/keithclark

... also q can be any value between 0 and 1
u/JWinslow23

Ah, my mistake, I forgot about floats
u/lionleaf

Nice one! #nye #fireworks
u/iverjo

Beautiful!
u/vain

3... 2... 1... ignition... beautiful firework

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New_Core

function u(t) {

for(i=130;i--;x.fill())r=Math.random()*500*S(t/2)+99,x.beginPath(),x.fillStyle=R(r,r/2,r/3,S(a=i*t)/30),x.arc(960+r*C(a),440+r*S(a),i/3,0,7)

Dec 30 2018 2:37 PM UTC

}// 140/140

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was messing around with some code and stumbled on this erupt of black smoke.

u/katkip

Paint?
u/katkip

Nvm, vulcano

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katkip

function u(t) {

c.width^=0;f=(X,Y,d)=>{if(d>30)x.arc(X,Y,d,0,7),f(X-d*C(d+t),Y,d/2),f(X,Y-d*S(d+t),d/2),x.stroke()}
f(960,540,300)

Dec 30 2018 12:21 PM UTC

}// 114/140

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Perfectly moving circles inside a circle #recursive

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