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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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rpearl

function u(t) {

for(i=v=540,j=50,x[r='fillRect'](0,0,v*4,v*4);i--;)x[r](960+C(a=i*3.883)*i,v+S(a)*i,9,9,x.fillStyle=`hsl(${h=t*i},99%,${j*S(h/j)}%)`)

Mar 10 2017 11:21 PM UTC

}// 133/140

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I'm mostly just obsessively golfing the one cool demo I did and using the excess characters to add cool things... I should figure out more demos

u/donbright

this is joyous
u/FireFly

It's super pretty!
u/sigveseb

Super stylish!

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sfz

function u(t) {

W=c.width|=0
for(i=q=20,h=q*9,H=3*h;i>0;i-=.01)N=C(t*q),O=C(i),V=3**O-2*C(4*i)-S(i/q)**5,x.fillText('🦋',W*t%4e3-H+h*O*V,H+h*(N+N*S(i)*V))

Mar 8 2017 7:06 AM UTC

}// 137/140

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Butterfly for my daughter

u/sfz

(Chrome only)
u/magna

Awesome!
u/sigveseb

Creative ^^
u/donbright

works in newer firefox!!!
u/sfz

woohoo

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veubeke

function u(t) {

c.width^=o=0;for(i=30;i--;x.stroke())P=Math.PI,$=S(t%P),_=C(i/5)*$,x.beginPath(o+=3-$+_),x.ellipse(o*4+t*60-300,(21+_-S(t%P))*50,9,30,0,0,7)

Mar 6 2017 5:39 PM UTC

}// 140/140

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Inspired by https://www.dwitter.net/d/1829

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SpecialAgent

remix of d/1755 by u/SpecialAgent

function u(t) {

c.width^=0;r=60;for(n=6;n--,q=r*[1,2,3,5,6,9][n],d=t/[1,2,3,4,5,6][n];)x.arc(r*9,r*9,q,1,9),x.stroke(),x.fillRect(r*9+q*C(d),r*9+q*S(d),9,9)

Mar 3 2017 7:50 AM UTC

}// 140/140

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The approximate orbits of the newly discovered Trappist-1 system, three of the seven planets lie in the habitable zone. The innermost planet is not shown here.

u/sfz

I love these space science ones!
u/SpecialAgent

The outermost planet circles the sun around every 20 Earth days, that is a very tight year!
u/donbright

outstanding!

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SpecialAgent

function u(t) {

a=1103515245,c=12345,m=0x7fffffff,z=t;for(i=111;i--;)z=((a*z+c)%m),g=z&0x3fffffff,z=((a*z+c)%m),h=z&0x3fffffff,x.fillRect(g%1e4,h%1e3,9,9)

Feb 24 2017 8:19 PM UTC

}// 138/140

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A pseudo-random number generator. The parameters you see is used in glibc, it gives a good visual on distribution. If you changed m=0x80000000 (m as used in IBM's C/C++) you will quickly see a bias in the randomness. Oh the irony! Here are some other popular parameters you can try: Borland C/C++: a=22695477,c=1,m=0x100000000 Turbo Pascal: a=134775813,c=1,m=0x100000000 Visual Basic 6: a=1140671485,c=12820163,m=0x1000000 Java: a=25214903917,c=11,m=0x1000000000000 Many more: https://en.wikipedia.org/wiki/Linear_congrue… 🕶

Show more comments…
u/iverjo

This is the probably the best PRNG dweet thus far
u/sigveseb

cool stuff
u/issafly

fullscreen it and stare into it like one of those stereograms for the extra special good.
u/SpecialAgent

thanks folks! also the speed is crippled for dramatic effect, change the loop to "for(i=1e3;i--;)" for turbo mode.
u/iverjo

Speaking of stereograms, it would be cool if anyone could create a stereogram dweet
u/SpecialAgent

Sorry for the malformed link to wikipedia, here is the corrected URL: https://en.wikipedia.org/wiki/Linear_congrue…

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iverjo

remix of d/379 by u/iverjo

function u(t) {

c.width=960;for(i=2e3;i--;)x.fillRect(480+460*S(d=i/42)*S(b=2.79*i+t),270+160*(C(d)+T(t/9+d)),s=7/(S(d)*C(b)+2),s)

Feb 24 2017 6:41 PM UTC

}// 114/140

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u/donbright

great 3d effect
u/iverjo

Thanks :)
u/hamptonio

really nice
u/5Mixer

Epic!

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bligglenuber

function u(t) {

w=600;c.width=w*2;a=60+10*S(t/3);b=200;d=150;e=a-b;for(var i=0;i<500;i++){m=i*e/b;x.lineTo(w+e*C(i)+d*C(m),w/1.8+e*S(i)-d*S(m))};x.stroke();

Feb 24 2017 4:56 PM UTC

}// 140/140

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u/dogspace

limacons are my fav polar shape!

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Birdinadream

function u(t) {

q=255;b=540;x.fillStyle=R(9,9,9,.1);x.fillRect(0,0,1920,2*b);x.fillStyle=R(q,q,q,1);for(i=0;i<99;i++)x.fillRect(b+i+T(t)*99,b+C(t*i)*b,6,2)

Feb 24 2017 8:41 AM UTC

}// 139/140

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donbright

remix of d/1055 by u/paberr

function u(t) {

x.font="99px Arial";for(i=64;i;i--)w=3+i%8<<7,h=i/8<<7,(i/8^i)%2?x.fillRect(w,30+h,128,128):1,x.fillText(i%29<1?"♚":i%37<1?"♔":" ",w+20,h)

Feb 24 2017 7:27 AM UTC

}// 138/140

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stalemate!

u/5Mixer

Chess pieces were a nice touch :)
u/sigveseb

cool ^^
u/donbright

#chess

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fson

function u(t) {

x.strokeStyle = R(5*t, 0, 10*t, 0.01);
x.arc(t*100, (S(t+Math.PI)+1.5)*300, (S(2*t)+1)*100, 0, 2*Math.PI);
x.stroke();

Feb 23 2017 11:35 PM UTC

}// 119/140

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u/lionleaf

That looks amazing!
u/iverjo

Dope
u/Xen

Remix #2933
u/Xen

Remix #2933