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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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… 🕶

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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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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

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visy

function u(t) {

for(i=255;i>0;i--)
z=i+t,ss=(C(t*10.+i)+i*t*.1*S(t*i*.1)),x.fillStyle=R(i,i*2-ss,i*3-ss,0.2),x.fillRect(960+S(z)*ss, 540+C(z)*ss, 5, 5)

Feb 23 2017 1:59 PM UTC

}// 135/140

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recursive

function u(t) {

for(X=0;X<2e3;X+=64)for(Y=0;Y<2e3;Y+=64)x.fillStyle=R(d=300-((Y-540-200*C(t))**2+(X-960-200*S(t))**2)/2e3,d-64,d+128),x.fillRect(X,Y,64,64)

Feb 22 2017 5:54 PM UTC

}// 139/140

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iverjo

function u(t) {

for(i=0;i<2400;i++)x.beginPath(),x.arc(960+i*C(i/20),540+i*S(i/20)/3,29+i*i/2e4,0,7),x.fillStyle='#'+['000','A0E','FFF','9F0'][i%4],x.fill()

Jan 28 2017 10:00 PM UTC

}// 140/140

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Optical illusion: Go fullscreen and glance at the different parts of the image. As you move your eyes, it may seem like other parts of the image moves slightly.

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u/iverjo

This needs a large and bright display to work
u/donbright

lol i kept looking for 't' in your code, not there!
u/iverjo

Haha!
u/CliffJonesJr

I love these illusion dweets. Nice!
u/iverjo

Thanks :)
u/iverjo

#opticalillusion

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lionleaf

remix of d/45 by u/lionleaf

function u(t) {

c.width=2e3;x.translate(970,400);for(i=0;i++<30;)x.fillStyle='hsl('+i*9+',50%,50%)',x.transform(-1,C(t+1),S(t),-1,0,0),x.fillRect(i,i,99,99)

Jan 14 2017 4:42 PM UTC

}// 140/140

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Fruit ninja #dweetoff