Dweets awesomed by u/MrHaila

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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Current theme challenge: #ScaryMovies

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pavel

remix of d/20898 by u/cantelope

function u(t) {

for(c.width=i=640;i--;T=!T&&!x.beginPath(x.stroke()))j=i/16-T*i&30,r=(j+4)/12<<6,x.arc(320+r*C(a=j/1.91+t),180+r*S(a),i&30?0:32,0,7)

Dec 4 2020 3:01 AM UTC

}// 132/140

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Metatron's Cube

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u/pavel

Golfed this one a little bit :) #symmetry
u/pavel

i=[4 bits for start circle index][4 bits for end circle index offset from start circle][1 bit to decide start vs end]
u/pavel

That's 2**9=512 which is too small for power-of-two circle sizes but start clicle index wraps around so larger i is only redundant.
u/pavel

end-circle-offset == 0 is easy to check and means start and end are same circle, so draw that circle.
u/pavel

Otherwise draw the current circle with radius 0 which is same as lineTo.
u/pavel

T=!T&&!x.beginPath(x.stroke()) starts/strokes the path every two circles.
u/pavel

Here is a version before all the bit hacking for(c.width=640,i=16;i--;)for(j=16;j--;x.beginPath(x.stroke()))for(k=2;k--;)q=(i+j*k)%16,r=((q+2)/6|0)*64,x.arc(320+r*C(a=Math.PI/3*q+t),180+r*S(a),!j*32,0,7)

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MrHaila

remix of d/20909 by u/MrHaila

function u(t) {

c.width^=0
for(i=0;i<20;i++){
o=S(S(t*(i+1))*(S(t)-0.5))*440
q=i*98
e=i*2.5
x.fillRect(q,400,50,200+o+e)
x.fillRect(q,700+o-e,50,200-o+e)
}

Dec 3 2020 10:16 PM UTC

}// 139/140

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u/magna

Fun!
u/Odog8

#default

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MrHaila

function u(t) {

c.width^=0
for(i=0;i<20;i++){
o=S(S(t*(i+1))*(S(t)-0.5))*800
q=i*98
e=i*2.5
x.fillRect(q,400,50,200+o+e)
x.fillRect(q,700+o-e,50,200-o+e)
}

Dec 3 2020 10:13 PM UTC

}// 139/140

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Hello world!

u/Xen

welcome to the dwitter family!

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ciaccodavide

function u(t) {

r=180
h=(c.height=1920)/2
x.lineWidth=8
k=Math.PI*2/6
for(s=1;s<7;s++){
x.beginPath()
q=k
x.arc(h,h/2,r+t*s,s*k,t+s*k)
x.stroke()
}

Oct 26 2020 1:11 PM UTC

}// 131/140

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Concentric Buildup

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anotherkitten

function u(t) {

c.width|=0
x.scale(100,100)
f=40-t*10
for(j of[1,-1])for(i=t*5|0;i--;)x.fillRect(z=i+(t*5%1),5+j*(z>f)*(z-f)/5,-.5,j)
x.fillRect(f,4.9,1,.2)

Aug 31 2020 3:12 PM UTC

}// 140/140

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shooting some #default blocks

u/KilledByAPixel

Satisfying!
u/Xen

nice!
u/aleamb

cool!
u/katkip

O_O
u/danny@hille.dk

looped version =>c.width|=0,x.scale(100,100) for(i=(t%=6)*5|0;i--;x.fillRect(T=40-t*13,4.9,1,.2))for(j of[1,-1])x.fillRect(z=i+t*5%1,5+j*(z>T)*(z-T)/5,-.4,j)

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username

remix of d/2647 by u/New_Core

function u(t) {

c.width|=0;for(i=61;i--;x.lineWidth=22,x.strokeStyle='hsl('+a*30+',72%,50%)',x.stroke())x.beginPath(),x.arc(960,540,i*20,a=10*S(t+i/90),a+3)

Nov 22 2019 8:43 PM UTC

}// 140/140

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origins

u/username

#randomremix no 37

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username

remix of d/7630 by u/jylikangas

function u(t) {

c.width=200
for(i=2;i--;x.lineTo(X+3,Y>71?Y:71))Y=S(t*3+i*3.14)*60,x[f='fillRect'](X=50+i*99,Y=Y>9?89:80+Y,6,-9)
x.stroke()
x[f](98,80,9,20)

Nov 6 2019 6:49 PM UTC

}// 140/140

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BOUNCE

u/username

#randomremix no 36
u/katkip

#physics #collision #balance

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username

remix of d/16336 by u/username

function u(t) {

for(c.width*=j=1;j<11;j+=9)for(a=2.7**(t/2%2.3),i=-45;++i<46;)x[f=`fillRect`](d=i*20*j*a+960,0,b=5-5/a/j,1e4),x[f](0,d,1e4,b)

Oct 30 2019 2:52 PM UTC

}// 125/140

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infinity

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username

remix of d/16033 by u/username

function u(t) {

for(c.width|=_=9;_--;)for($=17;$--;x.fillText(String.fromCodePoint(128e3+_+$+s^0),($-s%1)*120-9,99+_*120))x.font=`7em'`,s=(t+C(t)**2)*13

Oct 12 2019 1:51 PM UTC

}// 136/140

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Emoji Wheel

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pavel

remix of d/13492 by u/KilledByAPixel

function u(t) {

for(c.width%=i=3600;i--;x.fillRect(535+S(t)*300+i%9*99+i/9%10*5/a,440+(i/90|0)*5-40/a,6,6))a=1/(1+7**(t-5-S(i*i)-i/500)),x.globalAlpha=a*a

Apr 27 2019 9:29 AM UTC

}// 138/140

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mr #default I don't feel so good #tribute

u/pavel

Awesome idea, I just had to #uncompress it.
u/pavel

#uncompressed
u/KilledByAPixel

Wow, better thenthe original and uncompressed. Damn you pavel.
u/katkip

#thanos is my daddy

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