Dweets awesomed by u/Drum

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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Drum

remix of d/683 by u/mxfh

function u(t) {

c.width=w=1920;π=Math.PI/2;λ=2;r=w/4;for(φ=-π;φ<π;φ+=.5/r){λ+=.3;x.lineTo(C(φ)*S(λ-t)*r+w/2,(C(t)*S(φ)-S(t)*C(φ)*C(λ-t))*r+r)}x.stroke()

Feb 24 2017 11:42 AM UTC

}// 136/140

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u/iverjo

#sphere

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Renaud___

function u(t) {

r=Math.random;f=g=>Math.floor(256*r());x.fillStyle=R(f(),f(),f(),0.008);for(i=0;i<99;i++)x.fillRect(2220*r()-300,1380*r()-300,600,600);

Feb 24 2017 11:35 AM UTC

}// 135/140

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u/5Mixer

Woah, this is awesome. I've got no idea how it works but it's making a dope picture :D
u/Renaud___

Its only chain of random position square with very very low opacity and random color :]
u/sfz

I'm just... I'm... speechless.

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zenymay5

remix of d/1139 by u/ursonate

function u(t) {

r=420;c.width=r*4;λ=0;for(φ=a=Math.PI/1;φ>-a;φ-=1/r){λ+=a;x.lineTo(C(φ)*S(λ-t)*r+2*r,(C(t=t+6/r)*S(φ)+S(t)*C(φ)*C(λ-t))*r+r)}x.stroke()

Feb 24 2017 6:09 AM UTC

}// 135/140

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Renaud___

function u(t) {

c.width=2e3;a=h=f=i=g=600;y=Math.PI/3+t/1e3;while(f++<5*a){for(e=4,z=2;z<a;z*=4)f%z==z/2?e=1:0;i+=e;x.lineTo(g+=C(y*i),h-=S(y*i))}x.fill()

Feb 24 2017 1:20 AM UTC

}// 138/140

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u/Xen

nice

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fson

function u(t) {

X=960;Y=540;c.width+=0;x.lineWidth=23
x.arc(X,Y,50,0,7);x.fill()
for(i=t;i<t+4;i++)x.beginPath(),x.ellipse(X,Y,250,99,i*1.04,0,7),x.stroke()

Feb 23 2017 1:31 PM UTC

}// 140/140

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u/iverjo

Clean
u/Kalanchoe

so perfect!

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walsh9

function u(t) {

O=[],Z=z=>R(y=255*S(z/32),y,y+128);for(i=1e4;i--;)d=i%128*15,e=i/128|0,x.fillStyle=Z((S(d/64)+S(e/4)+t)*99),x.fillRect(d,e*16,16,16)

Feb 23 2017 2:55 AM UTC

}// 132/140

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u/donbright

love the color scheme
u/walsh9

whoops left some junk at the beginning. not even using that array.
u/iverjo

Beautiful
u/sigveseb

Very pretty
u/Kalanchoe

Trippy yet so relaxing

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p01

function u(t) {

for(d=2e3;d--;x.fillRect(960+d*C(a),540+d*S(a),24,24))a=Math.random()*6.3,x.fillStyle=R(e=255*C(t-1e3/d*S(t-a-C(a*99/d))),99*S(a-e/d),6e4/d)

Feb 22 2017 11:45 PM UTC

}// 140/140

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u/sigveseb

Nice!
u/ninerdelta

wow!
u/p01

Thanks :)
u/ArtsyBiker1

Awesome!
u/TheGreatRambler

Messing with my brain!
u/lionleaf

#tunnel

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mxfh

remix of d/849 by u/mxfh

function u(t) {

r=480;c.width=r*4;λ=0;for(φ=a=Math.PI/2;φ>-a;φ-=1/r){λ+=a;x.lineTo(C(φ)*S(λ-t)*r+2*r,(C(t=t+1/r)*S(φ)+S(t)*C(φ)*C(λ-t))*r+r)}x.stroke()

Feb 22 2017 1:25 PM UTC

}// 135/140

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Show more comments…
u/chrishaff

Old school cool!
u/ninerdelta

wow this is awesome
u/donbright

lovely
u/sfz

how in the
u/Drum

I've been clickcing 'awesome' on quite a few examples here, but this one is AWESOME!
u/Kalanchoe

Wow!
u/Brutal

Higher math :)
u/robvoodoo

If only you could fly the camera around!
u/Lazy1337

#d3

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nilstastic

function u(t) {

c.width=1920;for(i=0;i<200;i++){var y=i*8-100;var xx=900+C(t*5)*200 + C(i+t*2)*400;x.fillRect(xx,y+C(t*5)*100,20,20);}

Feb 22 2017 9:36 AM UTC

}// 118/140

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u/J2D28U

Woah! It can go both ways depending on which way you concentrate!

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donbright

function u(t) {

c.width=900;半=450;for(i=0.0;i<360;i+=1){x.lineTo(半+C(i*t/10)*i,半*9/16+S(i*t/10)*i)};x.stroke();

Feb 22 2017 2:31 AM UTC

}// 95/140

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Show more comments…
u/lionleaf

Starts off nice looking and becomes extremely trippy and hypnotic!
u/inviso

mesmerizing
u/ilSilvano

wow that escalated quickly.
u/elanimus

someone tell me how to run this please
u/Xen

Golfed and tweeked, #2909 ;-)
u/sparr

This is a browser glitch, right? It only looks cool because the browser starts using too few segments to draw the spiral. Would be boring in a fixed browser.
u/Haabilo

@sparr Not really a glitch. The code uses lineTo as means to straw the lines. It also sets the maximum amount 5
u/Haabilo

...of the segments. Damn, I didn't think mistapping backspace on mobile would send the comment as-is...
u/ArtsyBiker1

Awesome
u/blackvitriol

welcome to time travels :)
u/hoppla1232

Sir Moire apprecetiates this
u/Freak

This is like one of those nightmares I have where everything keeps on getting faster and it scares me and I love it
u/joeytwiddle

This is for me the definitive dwitter dweet #spiral
u/geb

#background

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