Top dweets of all time

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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FireFly

remix of d/1690 by u/FireFly

function u(t) {

s=t?t<.1?s.replace(/\d/g,i=>+i?'-0+1+0-':'+1-0-1+'):s:'0';c=s[t*60|0];c<2?x.translate(0,16,x.fillRect(0,0,3,16)):x.rotate(c+1.05)

Mar 3 2017 4:49 PM UTC

}// 129/140

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Same as parent, but golfed and abusing time for the first 6 frames to evaluate/expand the L-system. The straight line at the start is an artifact of this and the particular choice of system.

u/donbright

love this method
u/SpecialAgent

love this series
u/katkip

#fractal

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veubeke

function u(t) {

r=c.offsetWidth/(c.width^=0);L=t?L.filter(l=>l[x.beginPath(),x.arc(...l,0,7),x.stroke(),2]++-70):(onmousemove=e=>L.push([e.x/r,e.y/r,5]),[])

Mar 2 2017 9:32 PM UTC

}// 140/140

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Note: doesn’t work in Firefox < 53 because of missing support for MouseEvent.x/y

u/iverjo

Wow, this is so cool
u/lionleaf

#interactive #whater #ripples

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aib

function u(t) {

for(X=96;X--;){for(Y=54;Y--;){p=(c)=>127+127*(Math.sin((X^Y)+t/c*300));x.fillStyle = R(p(67),p(71),p(61));x.fillRect(X*20, Y*20, 20, 20);}}

Mar 2 2017 5:22 PM UTC

}// 139/140

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sawaxon

function u(t) {

c.width|=0
for(j=1;j<14;j++)for(i=1;i<40*j;i++)x.fillRect(900+C(t+i/4)*80*j*0.7,500+T(t+C(i))*40*j*0.7,4,4)

Mar 1 2017 9:07 PM UTC

}// 107/140

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sawaxon

remix of d/1701 by u/sawaxon

function u(t) {

c.width|=0
for(j=1;j<11;j++)for(i=1;i<20*j;i++)x.fillRect(900+S(t+i/2)*80*j,500+C(t+i)*50*j,4,4)

Mar 1 2017 8:43 PM UTC

}// 96/140

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u/iverjo

Almost looks like 3D :) Making near dots smaller and far dots smaller would enhance the effect

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SpecialAgent

function u(t) {

π=Math.PI;h=540;q=S(t)
x.beginPath()
x.arc(960,h,q*q*h,1*π,3*π)
x.stroke()

Feb 28 2017 5:13 PM UTC

}// 74/140

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u/iverjo

Some interesting moirè patterns there
u/donbright

resembles 'circles and squares' fractal a little bit

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kchplr

remix of d/1416 by u/kchplr

function u(t) {

for(i=1296;i--&&t<2;Y=i/48|0,d=.2+((X-24)**2+(Y-13)**2)/300,s=(200*S(t*d)*d)%40,x.fillRect(X*40-S(Y*X+t)*s,Y*40+S(X+Y-t)*s,s/8,s/7))X=i%48

Feb 28 2017 12:24 PM UTC

}// 138/140

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I would be lying if I said this is what I had in mind

u/Flexi23

But no-one could look into your mind and compare. wait. no.

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PhocaZH

function u(t) {

e=(t%4-2);g=Math.abs(e);x.fillStyle='F00';y=400+-Math.sqrt(1-Math.pow(g-1,2))*150;a=-Math.acos(1-g);x.fillRect(900+e*150,y,9,870+a*150-y);

Feb 26 2017 9:42 PM UTC

}// 138/140

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u/lionleaf

#heart

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robot0001

remix of d/916 by u/robot0001

function u(t) {

t||(e=9,s=9,w=1890);c.width=w;t*=.1;x.translate(C(t)*w/2,S(t)*w/3);for(i=0;i<e;i+=0.02){x.fillRect(1,w*C(t*i),s,s);x.rotate(C(i*Math.PI/9))}

Feb 26 2017 2:40 PM UTC

}// 140/140

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robot0001

remix of d/1231 by u/iverjo

function u(t) {

c.width^=0;for(i=9;i<2e3;i+=4)s=3/(9.5-(t+i/99)%9),x.beginPath(),j=i*i*i+S(i+t+T(t)),x.lineWidth=s*s*s,x.arc(960,540,s*199,j,j+2),x.stroke()

Feb 26 2017 2:23 PM UTC

}// 140/140

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u/tapgiles

SO GOOD!!
u/iverjo

#tunnel