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.

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Current theme challenge: #Food

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katkip

remix of d/13245 by u/katkip

function u(t) {

c.width+=0;x.translate(960,540);x.globalAlpha=.02;for(r=4;r<1000;r+=5)x.fillRect(-r/2,-390+r/2,10+r,r/4),x.rotate(C(t*4+r/199)/199)

Apr 15 2019 11:56 AM UTC

}// 131/140

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u/Jezza

Nice!

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LimeLaser

function u(t) {

x.globalAlpha=0.02
x.font="320pt courier"
r=50*S(t)
x.strokeText("DWITTER",50+r*C(t),600+r*S(t))

Apr 15 2019 5:52 AM UTC

}// 96/140

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X-Ray Courier Font

u/joeytwiddle

What's the prognosis, doc?
u/joeytwiddle

#text

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KilledByAPixel

function u(t) {

f=(s,w)=>(m=(S(i*s/1e3)*199+99)*t%w,m>w/2?w-m:m)
for(i=1e3;--i;)x.fillStyle=`hsla(${i},99%,${f(4,99)}%)`,x.fillRect(f(2,3831),f(5,2151),9,9)

Apr 15 2019 4:24 AM UTC

}// 140/140

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1000 squares #bounce for you.

u/Xen

it gets better the longer you leave it ;)
u/KilledByAPixel

It does descend into chaos eventually but it takes a while.

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katkip

remix of d/13238 by u/katkip

function u(t) {

f=x=>(C(x/4)+S(x/9))/9;t||(X=Y=s=4);for(i=99;i--;)x.fillRect(1160+X*s+f(i/99)*159,250+Y*s+f(i/99)*159,5,5),Y+=f(X),X+=f(Y)

Apr 14 2019 3:52 PM UTC

}// 122/140

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Sorry for spam but this is beautiful

u/username

I think that you are a bit biased as there is almost no shape.
u/katkip

Then you are on firefox

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KilledByAPixel

function u(t) {

for(i=0;i<3e3;)x.fillStyle=R(i%1e3,i%250,i%150,.3+i),j=t*i/9,x.fillRect((S(i)*2e5-j)%2e3-9,(S(i*i)*2e5+j/2)%1080-9,Z=i++?3+9*S(i)**30:1e5,Z)

Apr 13 2019 2:56 AM UTC

}// 140/140

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2D #Starfield I squeezed in more colors and motion blur.

u/13thptr

stylish
u/iverjo

Meteor rain!

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rnbw

function u(t) {

t||(A=B=0);t=t/2;x.fillStyle=`#e54`;for(i=0;i++<9;x.fillRect(t*300+200*A-200+S(t+i)*99,450+220*B+C(t+i)*99,9,5)){A=C(A-t+i/2);B=C(B+A/2)}

Apr 12 2019 2:57 PM UTC

}// 137/140

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scribble 🖍️

u/Xen

nice

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vinca

function u(t) {

for(t||(X=Y=0,x[r='fillRect'](0,0,2e3,2e3)),i=1e3;i--;Y=W)x.fillStyle='#902',x[r](1e3+99*X,600+99*Y,1,1),V=Y-.98*X+4/(1+X*X)-3,W=-.99*X,X=V

Apr 12 2019 1:49 PM UTC

}// 139/140

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u/magna

Nice!

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pavel

function u(t) {

for(i=c.width|=h=1.5708;Y=i--%3-1||S(i);x.fillRect(960+S(a+t)*800/r/z,540+Y*800/z,s=60/z/z,s))a=i%3?i:i*h,r=(a%2?S:T)(a%h+h/2),z=3+C(a+t)/r

Apr 12 2019 7:45 AM UTC

}// 139/140

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Butterfly box #d3 #cube #perspective

u/Jezza

Woah!
u/KilledByAPixel

Well done.
u/lionleaf

That's wild! Love it #butterfly

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somebody

remix of d/13201 by u/Jezza

function u(t) {

c.width|=0;for(a=t%1;a<9;)for(b=2**a++,d=0;d<5;d+=11/7)x.beginPath(),x.arc(960+b*S(d)*3,540+b*C(d)*3,b,0,7),x.stroke()

Apr 12 2019 4:41 AM UTC

}// 118/140

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More golfing. with(x) is 1 byte longer

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Jezza

function u(t) {

c.width|=0;for(a=t%1-1;a<9;a++)b=2**a,[0,3,0,-3,0].map((h,i,j)=>{x.beginPath(),x.arc(960+b*h,540+b*j[i+1],b,0,7),x.stroke()})

Apr 12 2019 1:09 AM UTC

}// 125/140

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Simple infinite zoom

u/KilledByAPixel

i like infinite zooms

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