Dweets awesomed by u/sfz

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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paberr

function u(t) {

w=c.width=1920;h=c.height=1080;k=300
for(i=0;i<50;i++)x.fillRect((i+t*k+(1+S(t+i))*C(t)*k)%w,(t*50+(1+C(t+i))*S(t)*k)%h,10,10)

Feb 22 2017 10:31 PM UTC

}// 126/140

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sigveseb

remix of d/407 by u/sigveseb

function u(t) {

for(n=c.width=i=1e3,s=S(t),k=C(t);i--;x.lineTo(n*X/Z,n*Y/Z))F=S(i),U=C(i),V=(i&7)-3,_=V*s+F*k,Z=V*k-F*s+15,X=_*k-U*s+7,Y=_*s+U*k+3;x.fill()

Feb 22 2017 9:37 PM UTC

}// 140/140

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Show more comments…
u/donbright

that is unbelievable cool
u/iverjo

This one is best viewed in Chrome
u/magna

Nanotube
u/sigveseb

#material
u/joeytwiddle

Could be a dune heighliner #shiny
u/stiaje

#witchcraft
u/joeytwiddle

#hiddengem

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recursive

remix of d/887 by u/New_Core

function u(t) {

t||((I=new Image()).src="https://is.gd/aYk0fZ")
x.fillRect(0,0,z=5e5,z)
for(i=960;i--;)x.drawImage(I,0,t*60-z/(250+i),w=640,1,w-i,i,w+i*2,1)

Feb 22 2017 6:42 PM UTC

}// 140/140

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Got a black backgrounhd

u/lionleaf

Awesome! Give it some time to start ;)
u/New_Core

nice =)

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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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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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New_Core

function u(t) {

if(!t)b=a=0;9*t%3<1?a+=4:b+=5;x.fillStyle='hsl('+120*S(t)+',99%,50%)';x.fillRect(950+500*S(a*.01),540+400*S(b*.01),20,20);

Feb 22 2017 1:14 PM UTC

}// 122/140

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donbright

function u(t) {

c.width=960;半=480;垂=270;for(i=-t;i<t;i+=2)for(j=-t;j<t;j+=2){b=i*i+j*j;r=i*i-j*j;g=2*i*j;x.moveTo(半,垂);x.lineTo(半+垂*r/b,垂+垂*g/b)}x.stroke()

Feb 22 2017 3:22 AM UTC

}// 140/140

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rational parameterization of the circle (no sine or cosine)

u/donbright

#notrig

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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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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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lionleaf

remix of d/41 by u/lionleaf

function u(t) {

c.width=2e3;for(i=0;s=300,a=s/(s-(t+i*s/900)%s),i<900;i++){x.strokeRect(999-a*(1+S(t))/2,500-a*(1+C(t*2))/2,a,a)} //Redweet of an old tunnel

Feb 22 2017 2:15 AM UTC

}// 140/140

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#tunnel

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sfz

function u(t) {

c.width|=0;s=60;tt=t*360;tx=tt%1950;ty=tt%1210;c.style.background='#333';x.fillStyle='#0f8';x.beginPath();x.arc(0+tx,0+ty,s,0,7);x.fill()

Feb 22 2017 1:43 AM UTC

}// 137/140

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mxfh

function u(t) {

c.width=w=1920;π=Math.PI/2;λ=0;r=w/4;for(φ=-π;φ<π;φ+=1/r){λ+=.1;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 20 2017 11:57 AM UTC

}// 135/140

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simple orthographic projection; try some factors on the lat λ and lon φ offsets t

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u/mxfh

simple orthographic projection; try some factors on the lat λ and lon φ offsets t
u/wicktwo

Niiiice!
u/as

i love this one
u/ssg

nice variable names!
u/donbright

so elegant
u/lionleaf

#sphere
u/lionleaf

#d3 . (3d is currently not a valid hashtag)
u/BirdsTweetCodersDweet

#whichwayround #inorout

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