Dweets awesomed by u/rnbw

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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magna

function u(t) {

f=b=>`${b?'clear':'fill'}Rect`
c.width|=0
x[f(t&2)](0,0,2e3,2e3)
for(i=18;i--;)x[f(i&1)](400+i*50+S(t)*300,400,50,200)

May 15 2019 5:01 AM UTC

}// 118/140

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#default

u/rnbw

that's a really clever way to alternate functions!
u/katkip

nice method

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rnbw

remix of d/13826 by u/rnbw

function u(t) {

r=Math.random;with(x){for(i=0;i++<99;fillRect(r()*2e3,0,9,2e3))fillStyle=`#744`;font=`8em a`;fillStyle=`#fff`;fillText(code,-t*199+999,540)}

May 14 2019 4:36 PM UTC

}// 140/140

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a better version of the #quine i posted earlier - thanks to @KilledByAPixel for the advice on making it strict! (+ a new background color to make it distinguishable)

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rnbw

function u(t) {

r=Math.random;with(x){for(i=0;i++<99;fillRect(r()*2e3,0,9,2e3))fillStyle=`#456`;font=`8em a`;fillStyle=`#fff`;fillText(u,-t*199,540)}

May 14 2019 3:21 PM UTC

}// 133/140

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residual #quine

u/rnbw

and yes, it isn't strict, but... y'know, it works
u/KilledByAPixel

you can use the code variable instead of u to fix it!

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vinca

function u(t) {

t||(x.globalCompositeOperation="xor",X=0),x.fillRect(X+=9*S(t/9)|0,X,1,1),x.drawImage(c,1,0),x.drawImage(c,0,1)

May 14 2019 12:42 PM UTC

}// 111/140

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u/KilledByAPixel

i like this
u/Xen

so sexy :-O
u/katkip

Wat
u/joeytwiddle

#fractal
u/joeytwiddle

Eat your heart out Gustave Eiffel!

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rnbw

function u(t) {

for(i=0;i++<250;x.fillRect(i*9+C(t*4+i/40)*99-200,0,29,9))x.fillStyle=`hsl(${400+S(t*3+i/30)*99*S(t-i/40)-t*99},80%,90%)`;x.drawImage(c,0,9)

May 13 2019 1:46 PM UTC

}// 140/140

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iridesce 🌈

u/Xen

nice style

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vinca

function u(t) {

for(t||(Y=0),X=2e3;X--;)x.fillStyle=R(r=255*S(1/S(X/99)+1/C(Y/20)+t),r*S(t)/5),x.fillRect(X,0,1,5);x.drawImage(c,0,5),Y++

May 9 2019 1:23 PM UTC

}// 121/140

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rnbw

function u(t) {

r=Math.random;e=120;with(x)for(i=-1;i++<2;t||fillRect(i*e,0,e,e)){fillStyle=R(r()*255,r()*255,r()*255);drawImage(c,e*3,0);drawImage(c,-e,e)}

May 8 2019 3:01 PM UTC

}// 140/140

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tile stripes with 3 random colors - refresh for a new palette!

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pavel

remix of d/12115 by u/pavel

function u(t) {

for(i=c.width|=h=1065/226;q=--i%3-1,a=q?i:i*h+h/2;x.fillRect(960+S(a+t)*800/r/z,540+(q||T(i))*800/z,s=70/z/z,s))r=S(a%h),z=4+C(a+t)/r,z*=z>1

Apr 16 2019 5:01 PM UTC

}// 140/140

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#d3 #cube #perspective #wireframe

u/pavel

#uncompressed
u/KilledByAPixel

rad

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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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