Dweets awesomed by u/BuRRak

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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BalintCsala

function u(t) {

c.width=280
for(i=9;i-->-1;)x.fillRect(D=i*20+(K=(t%1)*20),D,W=20,W)
x.translate(80+K,60+K)
x.rotate(-K/6.5)
x.fillRect(0,0,W,W)

May 3 2018 8:50 PM UTC

}// 128/140

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square going up the stairs

u/Conjuror

love it and it is cool
u/Joachim

Looks good! To stop the jumpiness, replace -K/6.5 with -K/6.2

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BuRRak

function u(t) {

x.fillRect(0,0,2e3,2e3)
R=Math.random
r=!t?[...Array(150)].map(V=>[R()*2e3,R()*2e3]):r
for(d of r)x.clearRect(d[0],d[1]=(d[1]+4)%2e3,9,9)

May 3 2018 12:15 PM UTC

}// 137/140

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jylikangas

function u(t) {

c.width=-1
for(q=j=8;j++<21;T=65+~(t/6)%5*9)for(i=300;i-=2;x.clearRect(i,Y,1,1))x.fillRect(i,Y=j*5+(h=C(i/T)*35+(q+=S(i/j))),j/7,S(t)+T/2-h)

Apr 29 2018 10:22 AM UTC

}// 140/140

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Remote Islands

u/iverjo

Cool! After a while it shows multiple groups of islands
u/iverjo

#water #islands #landscape
u/BuRRak

Making of coming soon i hope
u/donbright

#art

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jylikangas

remix of d/7471 by u/jylikangas

function u(t) {

A=r=>x.fill(x.arc(960+R*C(t),540+R*S(t),t?r:1e4,0,7))
f=t?!f:0
t+=f*3
x.beginPath(A(R=180-f*3))
x.fillStyle='#'+(f?'ddd':559)
t&&A(45)

Apr 28 2018 4:16 PM UTC

}// 134/140

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Animated Yin Yang v2

u/jylikangas

Remixed with better golfing and black background
u/prplz

x.fillStyle=f?'#ddd':'#559'
u/BirdsTweetCodersDweet

#tagfail inside a code block? Hmmmm
u/geb

#background

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BuRRak

function u(t) {

for(d=(+new Date).toString(2),c.width=v=d.length;v--;)x.fillRect(v,0,d[v],99);

Apr 28 2018 10:36 AM UTC

}// 78/140

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Binary clock

u/BuRRak

This could be done using bitwise but for some reason it doesn't work
u/E-Mouse

Made a similar thing a while ago, not a clock but a second counter. d/4708

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trancor

remix of d/7820 by u/trancor

function u(t) {

!t?h=(c.width=w=99)+5:0;s=S(t)*9+29;for(i=0;i<w*h;i+=7){j=i%w;k=i/w;x.fillStyle=R(C(t+S(j+k/3)*C(i*k)*3)*255,0,k,.1);x.fillRect(j-6,k,s,s);}

Apr 27 2018 1:18 AM UTC

}// 140/140

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u/joeytwiddle

mmm nice #texture
u/Agnes

"That's gotta be... that's gotta be Kane!"
u/aleamb

nice!

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BuRRak

function u(t) {

for(i=c.width=99;i--;)for(j=56;j--;x.fillStyle=`hsl(${i|j|frame},100%,50%)`)x.fillRect(i,j,1,1)

Apr 26 2018 6:11 PM UTC

}// 95/140

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BuRRak

function u(t) {

for(i=c.width=99;i--;)for(j=56;j--;)x.fillRect(i,j,T(i|j+j|frame)*0.5+0.5,1)

Apr 26 2018 3:41 PM UTC

}// 76/140

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u/sigveseb

#glitch

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BuRRak

function u(t) {

for(i=c.width=99;i--;)for(j=56;j--;)x.fillRect(i,j,Math.random(),1)

Apr 26 2018 5:26 AM UTC

}// 67/140

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u/New_Core

#noise
u/rep_movsd

The TV people

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BuRRak

remix of d/7797 by u/BuRRak

function u(t) {

for(i=c.width=99;i--;)for(j=56;j--;)x.fillRect(i,j,S(i&j+t*60)*0.5+0.5,1)

Apr 25 2018 4:10 PM UTC

}// 73/140

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I really like how changing a few things results in something totally different

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