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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jkjustjoshing

remix of d/7270 by u/New_Core

function u(t) {

i=1920;
j=Math.abs
for(;i--;)x.fillStyle=R(255,(t*600-i/3)%999,255),x.fillRect(i,500+100*j(T(i/599))*S(j(i/90)),1,40)

Mar 21 2018 1:07 AM UTC

}// 117/140

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Show more comments…
u/AnielaMW

x.fillStyle=R((t*600-i*2)%999,255,255),
u/AnielaMW

x.fillStyle=R((t*600-i/9)%999,255,255),
u/AnielaMW

Here is green, but no black background...
u/AnielaMW

x.fillStyle=R((t*600-i/9)%999,255,(t*600-i/9)%999),
u/AnielaMW

i=1920;j=Math.abs;for(;i--;)a=(t*600-i/9)%999,x.fillStyle=R(a,255,a), x.fillRect(i,500+100*j(T(i/599))*S(j(i/90)),1,40)
u/AnielaMW

still trying to get the black background
u/joeytwiddle

This is wrong but perhaps you can fix it: i=1920;j=Math.abs;for(;i--;)a=(t*600-i/9|0)%999,x.fillStyle=R(0,a,0),x.fillRect(i,a?500+100*j(T(i/599))*S(j(i/90)):0,1,a?40:999)

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joeytwiddle

function u(t) {

eval(unescape(escape('👣🐮👷👩👤👴👨🐽🐳🐰🐰🐻👸🐮👦👩👬👬👔👥👸👴🐨🐢👴👹🐠👀👆👡👫👥👕👮👩👣👯👤👥🐢🐬🐹🐬🐱🐵🐩').replace(/u.{8}/g,'')))

Mar 13 2018 6:58 AM UTC

}// 93/140

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https://twitter.com/FakeUnicode/status/97326…

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Xen

function u(t) {

with(x)for(i=35;i--;fill())beginPath(stroke()),arc(990+C(t*9+i)*i*19,540+S(t*9+i)*i*19,i*19,0,7),fillStyle=`hsla(${i*9+t*299},90%,50%,.5)`

Mar 12 2018 5:10 PM UTC

}// 138/140

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u/aleamb

nice colors!
u/Xen

THanks :-)

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aemkei

function u(t) {

x.font="3em A"
x.fillText("ᴀscıı♥",1,40)
for(I=5e3;I-=2;x.fillText("k+ "[!d[3]+!d[7]],X*14,Y*22))
d=x.getImageData(X=I/36,Y=I%82,2,1).data

Mar 10 2018 11:49 PM UTC

}// 138/140

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ASCII Art Renderer

u/aemkei

123 bytes: d/7278

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AnnanFay

remix of d/6715 by u/AnnanFay

function u(t) {

(async 淵=>eval((t<9&&記?記:(reset(記=1),記=/u\(t.*([^]*?) }/.exec(await(await fetch(名=0|Math.random()*9e3)).text(),t=0)))[1]))();throw 名};{記=0

Mar 9 2018 9:45 PM UTC

}// 138/140

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Slideshow v2: A new Dweet every 9 seconds. Current Dweet in error message. Version 2 comes with improved compatibility, usability and performance.

u/fujimotos

Oh, why do you use kanji characters as variables?
u/AnnanFay

The kanji are so I don't accidentally redefine a variable which something uses. For example there's code which does t||(_=c.width) so if I use _ it would break the code. It will break stuff which uses these kanji, but right now this is the only dweet using them.
u/fujimotos

Nice. I didn't know that they are valid variable names...
u/DataMeta

#hiddengem
u/joeytwiddle

Unfortunately this magic got blocked when CSF was introduced

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camel_case

function u(t) {

t<.1&&(l={},p=X=Y=j=0,i=-1)
f=(a,b)=>p=[X+=i=a,Y+=j=b]
x.fillStyle=R((l[p]=l[p]?(f(j,-i),0):(f(-j,i),1))<<8)
x.fillRect(960+X*9,540+Y*9,9,9)

Mar 9 2018 1:33 PM UTC

}// 140/140

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Langton's ant

u/fujimotos

cool.
u/Woodmouth

If you wait long enough, you'll get to the highway: http://prntscr.com/ipi4q6

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cantelope

function u(t) {

for(w=(i=c.width|=0)/2;i--;)x.fillRect(w+S(v=i/5e3-t*3-C((d=1+i%5)+t*3))*d/(Z=8+C(v)*d)*w-(s=w*2/(4+i/199)/Z/Z)/2,540+(i%7-3)/2/Z*w-s/2,s,s)

Feb 25 2018 2:48 AM UTC

}// 140/140

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https://dweet.net/259/7073

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BuRRak

function u(t) {

t||(A=S=K=L=G=0);onkeydown=e=>self[e.code[3]]+=10;x.fillRect(S-A,L-K,10,10);G==0||(c.width|=G=0)

Feb 24 2018 5:08 PM UTC

}// 96/140

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Etch a Sketch, AS - left knob CCW and CW, KL - right knob CCW and CW, G - shake

Show more comments…
u/snydej

I haven't figured out why yet but once I press "[" or "]", G stops working but A, S,K, and L still work.
u/BuRRak

Yeah, i have that issue too. Very weird
u/zanella

It's because, when you hit [ or ], e.code[3] evals to c (fourth letter in BracketLeft and BracketRight). Then, self[c] overrides the c variable, which is the reference to the canvas, and because of that c.width|= stops working. The other keys still work because x still points to the canvas context, which is what draws the rectangles. ;)
u/zanella

You can fix this and also code golf 4 characters:
u/zanella

t||(a=s=k=l=g=0);onkeydown=e=>self[e.key]+=10;x.fillRect(s-a,l-k,10,10);g==0||(c.width|=g=0)
u/snydej

zanella: I'll give you the golf, but it's not a fix. It'll break if you press x or c. Not that I care too much; this dweet is quite clever even if no one should ever do this in practice.
u/snydej

Btw thanks for the explanation :) Also I golfed 9 more characters off it: t?g?c.width|=g=0:onkeydown=e=>self[e.key]+=10:a=s=k=l=g=0;x.fillRect(s-a,l-k,10,10)
u/zanella

u/snydej You're right, it's not a fix if it breaks something else. :D And I agree, this dweet is totally ingenious!
u/zanella

The unavoidable remix: https://www.dwitter.net/d/7102

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anilalur

remix of d/6609 by u/anilalur

function u(t) {

v=(a,b,g,r)=>{for(i=0;i++<r;)x.fillRect(a+=S(C(g)),b-=T(g),r/9,2)
r>1?v(a,b,g+=o,r*=.7)&v(a,b,g+=5,r):0}
o=t/9+1;
c.width=500
v(25,280,0,80)

Feb 24 2018 4:30 PM UTC

}// 140/140

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Xen

function u(t) {

t?x.fillRect(0,0,2e3,69):x.translate(999,499)
x.rotate(t/29),x.fillStyle=`hsl(${t*199},59%,29%)`
x.globalCompositeOperation='difference'

Feb 23 2018 12:16 AM UTC

}// 136/140

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u/DirtyDan

Nice, reminds me of spin art: http://www.stevexcraig.com/style/images/art/…