Dweets awesomed by u/pavel

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: #Food

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pavel

function u(t) {

for(c.width=i=300;j=--i>>1;x.fillText('⚫⚪'[k],29*j-8*s,84+(k*25-1)*Math.tanh(5*S(a))))k=i&1^C(a=j/3-2*t)>0,x.font=(s=1+C(k*a/2)**2)*12+'px"'

Nov 23 2018 8:40 AM UTC

}// 140/140

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Twister #beesandbombs

u/pavel

Getting the white to go over the front but behind the back is so hard! Had to use emojis to save bytes but its janky on some devices.

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pavel

remix of d/11126 by u/pavel

function u(t) {

for(c.width|=j=22+(w=t&2)/2;--j;)for(i=8;i--;x.arc(960,540,i&&70*(j-p),a=(i+p-p*w)*355/339,a))p=1/(1+2**(j+6-t%2*16));x.fill('evenodd')

Nov 23 2018 6:17 AM UTC

}// 135/140

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pavel

function u(t) {

with(x)for(j=9;--j;)for(i=2<<j,f=6.28/i;i--;fill())for(beginPath(k=2);k--;fillStyle=i%2?'#fff':R())arc(960,540,k*190*j**.5,a=(i+t%2)*f,a+f)

Nov 23 2018 4:55 AM UTC

}// 139/140

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Black and white spinners #beesandbombs

u/katkip

1.5 dimension fidget spinner
u/BackendForth

Looks like a rotary encoder.

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pavel

remix of d/9830 by u/joeytwiddle

function u(t) {

for(c.width|=j=22,t%=2;--j;)for(i=8;i--;x.arc(960,540,i&&j>2*p&&70*(j-2*p),a=(i+p)*355/339,a))p=1/(1+2**(j+6-16*t));x.fill('evenodd')

Nov 23 2018 3:16 AM UTC

}// 133/140

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u/joeytwiddle

Golfed with plenty to spare. Fantastic!
u/sigveseb

Oh my
u/iverjo

Yes!
u/pavel

#uncompressed

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pavel

remix of d/11116 by u/vistefan

function u(t) {

t?0:D=[0,-5,0,d=5,w=X=Y=150]
for(i=w;i--;x.fillRect(X,Y,5,5))x.fillStyle=R(b=w-x.getImageData(X+=D[d&3],Y+=D[++d&3],1,1).data[0],b,d+=b&&2)

Nov 22 2018 7:01 AM UTC

}// 139/140

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Fast Langton's ant #waitforit

u/katkip

Wow thats cool
u/pavel

#ant #automata

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ellisk1

function u(t) {

q=t+20;for(c.width=i=2e3;i--;)x.fillRect(1e3+500*S(a=(q-=.01)+t/9),1280-210*Math.abs(S(q*3.75))+34*(t-q),w=15+5*C(a),w)

Nov 21 2018 6:43 PM UTC

}// 119/140

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Bouncer #beesandbombs

u/aleamb

fucking awesome!

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pavel

remix of d/11100 by u/pavel

function u(t) {

for(c.width|=i=18,t%=8,T=t<<1;i--;)x.rect(535+(i?i-1:T)*50,440-!i*200*S(t*Math.PI),i?!~~(T-i+1.5)^i%2?50:0:100,200);x.fill('evenodd')

Nov 21 2018 6:30 PM UTC

}// 134/140

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Evenodd 2 #default

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pavel

function u(t) {

c.width=-1;i=t%9;with(x){for(j=9;j>i;moveTo(X=i*35,84))fillText(' Awesome!'[j],35*j--,87);fillStyle='#fe0';fill(arc(X,84,9,a=S(i*3)**2,-a))}

Nov 21 2018 8:34 AM UTC

}// 140/140

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Awesome #pacman

u/jylikangas

Awesome!
u/magna

Pacman!

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pavel

remix of d/11101 by u/pavel

function u(t) {

for(f=i=405;i--;f=x[f?'fillRect':'clearRect'](-1,-1,2,2))x.setTransform(s=32+S((i+(j=i>>5)+t)*Math.PI)*16<<f,0,0,s,i%32*99,j*99),x.rotate(t)

Nov 21 2018 6:39 AM UTC

}// 140/140

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Dancing Squares #beesandbombs

u/pavel

This one took a lot of golfing. Calling rotate separately actually saves bytes as it avoids the scale definition / multiplication
u/katkip

!

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pavel

remix of d/11018 by u/pavel

function u(t) {

t?c.width=innerWidth:a=b=X=Y=0
onmousemove=e=>(X=e.x,Y=e.y)
x.moveTo(a+=C(d=Math.atan2(Y-b,X-a)),b+=S(d))
x.arc(a,b,20,d+t%1,d-t%1)
x.fill()

Nov 21 2018 5:11 AM UTC

}// 140/140

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Pacman is hungry #interactive

u/pavel

#pacman

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