Dweets awesomed by u/codeslaw

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: #ScaryMovies

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scottglz

remix of d/2194 by u/scottglz

function u(t) {

c.width=76;for(X=71;X--;)for(Y=40;Y--;x.fillRect(X,Y+S(X/9+7*t)+2,1,1))x.fillStyle=X<24&Y<20?Y%2|X-Y&3|!Y|!X?'#447':f:Y/3&1?f='#ddd':'#b23'

Mar 21 2017 8:19 PM UTC

}// 139/140

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u/sfz

awesome!
u/joeytwiddle

#flag

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z3vin

function u(t) {

r=Math.random;y=c.width;z=c.height;x.fillStyle='#333';for(i=0;i<2999;i++)x.fillRect(r()*y,r()*z,5,5);x.clearRect(r()*y-99,r()*z,r()*z/2,z)

Mar 20 2017 8:42 PM UTC

}// 138/140

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The City Never Sleeps

u/sigveseb

Cool technique!
u/z3vin

thanks! @sigveseb

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aemkei

function u(t) {

  // a simple dwitter quine
  x.font="50px Courier";

  (u+"")
    .split("\n")
    .map(
      (a,i) => x.fillText(a, 10, 100+i*70)
    );

Mar 19 2017 9:44 PM UTC

}// 140/140

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u/rpearl

it's not a quite a quine though ;)
u/sfz

@rpearl happy now? https://www.dwitter.net/d/2234
u/sfz

oops https://www.dwitter.net/d/2235

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New_Core

function u(t) {

for(i=2e3;i--;)x.fillStyle='hsl('+200*C(t*.5)*S(i*.005)+',99%,50%)',x.fillRect(i*5+200*S(t)-200,1070,5,9);x.drawImage(c,0,-9,1920,1080)

Mar 19 2017 8:27 PM UTC

}// 135/140

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another color shock

u/New_Core

#colorshock

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sfz

remix of d/2171 by u/sfz

function u(t) {

c.width=w=540;t*=7;for(i=l=129;i>69;t+=i--)for(j=7;j--;)h=t*i%w,a=h-l>l,x.fillRect(t%w+(a?9*S(t/j):0),a?w/2+h%7*C(t/j):h,h<w*.6,a||9)

Mar 18 2017 5:47 AM UTC

}// 133/140

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Bit rainy

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codeslaw

function u(t) {

x.fillRect(0,0,$=2e3,$)
i=3e3;while(i--){x.strokeStyle=`hsla(${i*C(t/21)},79%,49%,.3)`;π=i%$||x.stroke()|x.beginPath()
x.arc(0,i/$*π,π,0,7)}

Mar 18 2017 1:21 AM UTC

}// 140/140

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Curves, colors, lights, and shadows.

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u/sigveseb

Very nice!
u/iverjo

Nice in Chrome, but froze my Firefox for like 15 seconds
u/codeslaw

😅 You can play around with lowering i and $ to raise the frame rate ¯\_(ツ)_/¯
u/donbright

i like the elegance of this, really has a special look to it
u/donbright

i like the elegance of this, really has a special look to it
u/joeytwiddle

#shiny

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veubeke

function u(t) {

t?_[Math.random(B=c.width^=0)*6|0]++:_=[0,0,0,0,0]
x.font='100px O'
_.map((v,i)=>x.fillText('🐌',110+v,$=200+i*179,x.fillRect(0,$-130,B,4)))

Mar 17 2017 10:17 PM UTC

}// 139/140

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u/sigveseb

Lol!
u/veubeke

Fun hack: using *6 instead of *5 for the index adds a 6th element containing NaN. The 6th line is visible but not the snail because drawing the snail involves the NaN value.
u/gabrielsroka

neat, but are the snails going backwards?
u/innovati

you're too silly :3
u/tapgiles

What's with the _?
u/veubeke

@gabrielsroka: if you have an emoji font with a snail looking left then they’re going backwards, yes
u/lionleaf

Going backwards on my phone, but forwards on my laptop. This should be part of the snail emoji spec!!
u/veubeke

I’ll bring it up at the next snail emoji consortium meeting.
u/gabrielsroka

lol, they're soooo slow, they're going backwards. and yes, mine look left
u/gabrielsroka

according to http://emojipedia.org/snail/ Apple is in the minority, and Windows 8.1 looks left
u/magna

On my computer, the best snail always wins.
u/ilSilvano

Great idea! :-D
u/iverjo

#random
u/micahcowan

#emoji #snailrace

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scottglz

function u(t) {

for(X=71;X--;)for(Y=39;Y--;)x.fillStyle=X<24&Y<21?Y%2|(X-Y)%4|!Y|!X|Y>18?'#00f':'#fff':~~(Y/3)%2?'#fff':'red',x.fillRect(X*25,Y*25+X,25,25)

Mar 17 2017 8:04 PM UTC

}// 139/140

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Needs more golfing to add an animated wave

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u/magna

~~(Y/3)%2 can be shortened to Y/3&1
u/magna

(X-Y)%4 can be shortened to X-Y&3
u/magna

Added some waves (not so nice): https://www.dwitter.net/d/2188
u/scottglz

I had figured out Y/3%2 before I saw your comment, but X-Y&3 eluded me. Thanks!
u/recursive

I added some different waves. https://www.dwitter.net/d/2196
u/iverjo

#flag

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magna

remix of d/2170 by u/magna

function u(t) {

c.width=w=1920;h=1080;n=128;m=72;s=w/n;for(i=n*m;i--;X=i%n,Y=i/n,b=S(eval(`X${[...'|&^*'][t&3]}Y`))**.5,x.fillRect(X/n*w,Y/m*h,b*s,b*s));

Mar 17 2017 5:47 PM UTC

}// 137/140

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Carpet pattern explorer

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metaphalanges

function u(t) {

d=12;for(i=1;i<161;i++){for(j=1;j<91;j++){v=255-T(t+S(i+80)*t+C(j+45)*t)*125;x.fillStyle=R(v*S(t),v*C(t),v*T(t));x.fillRect(i*d,j*d,d,d);}}

Mar 16 2017 4:13 PM UTC

}// 139/140

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u/donbright

excellent colors

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