Dweets awesomed by u/384.cz

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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sortie

function u(t) {

eval(c.id+=String.fromCharCode((Q="㬻籴硼琮慲獮慬整㤨〶㔬〴㬩⹸潦瑮✽攵⁭❁栻ㄽ㜲㔮砻昮汩卬祴敬刽䌨琨⨩⭨ⱨ⡓⨵⥴株栫匬㌨琪⨩⭨⥨砻昮汩呬硥⡴⹣摩㌬〰匪㌨琪Ⱙ㔲⨰⡃⨷⥴㬩⹸潲慴整ㄨⵅ⤲⼯".charCodeAt(t*60))%256,Q>>8))

Mar 2 2017 10:03 PM UTC

}// 140/140

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I'd like to announce the dwitter character limit has been increased to 146 characters.

Show more comments…
u/iverjo

Details please?
u/sigveseb

kinda dangerous though, you might run into a partial dweet that forces an endless loop
u/sortie

We're restricted to 140 unicode characters, not 140 bytes. I exploited UTF-16 to encode two ascii values per UTF-16 codepoint. Since the overhead is less than 70 bytes, I can exceed the 140 ascii char limit. The characters 㬻 and ⼯ are fun exercises for the reader.
u/sortie

The decoder is quite golfed and exploits some fun facts. The payload itself is a quine exploiting decoder side effects.
u/sortie

sigveseb, admittedly I didn't think of that case. Partial dweet initial loops are easily fixed wrapping the payload in {} (or any other syntax error) at the cost of 1.5 codepoints (㬻 has one free byte).
u/donbright

wow!

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sigveseb

function u(t) {

t*=5;for(c.width=s=X=64;X--;)for(Y=37;Y--;1-Q*Q-W*W>0&&x.fillRect(X,Y,1,1))for(j=40,Q=W=E=0;j--;Q=E)E=Q*Q-W*W-X/t/t+5/t,W=2*W*Q-Y/t/t+.66

Mar 2 2017 2:02 AM UTC

}// 137/140

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u/sfz

Nice Mandelbrorshach!
u/iverjo

That's pretty impressive
u/sigveseb

#fractal #zoom
u/katkip

Awesome
u/katkip

#mandelbrot

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hamptonio

remix of d/1619 by u/New_Core

function u(t) {

w=c.width=256;for(i=w*w;i--;)a=255*S(w),x.fillStyle=R(a,a,a,Math.random()),x.fillRect(i%w,i/w|0,1,1);x.font='5em A';x.fillText("ಠ_ಠ",69,90);

Mar 1 2017 4:25 PM UTC

}// 140/140

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I like New_Core's use of a single loop to get two coordinates; I think this is a slight improvement on that aspect.

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5Mixer

function u(t) {

i=w=c.width=1920
x.font="7em ῦ"
n=150
x.fillText("👾",n,200)
x.fillText("🐄",n,S(t*5)*n+600)
while(i-->0)x.fillRect(i,1e3,1,S((i+n)/n)*70-n)

Feb 28 2017 9:09 AM UTC

}// 138/140

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Plz put me down alien.

u/5Mixer

This was just a quick one, didn't spend too much time golfing. Interesting but minor discovery, use em as the unit in font size and you might not have to go into double digits.
u/iverjo

Thanks for the tip :)
u/joeytwiddle

#emoji #funny #scene #cow #ufo #alien

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sfz

remix of d/1479 by u/sfz

function u(t) {

c.width=w=2e3
d=new Date
t?!(d&9)&&o.push([d%w,0,0,d%9]):o=[]
o.map(a=>(x.font=a[3]+'em ø',x.fillText('❄',a[0],a[1]+=a[2]+=a[3]*a[3]/w)))

Feb 27 2017 11:03 PM UTC

}// 137/140

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Snowflakes with gravity acceleration and parallax

u/sfz

err, depth that is, small ones fall slower as if they're further away :P
u/joeytwiddle

#snow I think it's fair to call that parallax, just vertical

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Renaud___

function u(t) {

l=c.width+=i=0;h=400;for(;++i<200;)for(j=a=(t+C(i))%2;j++<50;)x.fillRect(l*C(i*i)+~~a*(w=a*h-h)*C(j),(~~a?h:a*h)*(C(i)*C(i)+2)+w*S(j)/4,3,3)

Feb 27 2017 12:09 PM UTC

}// 140/140

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Show more comments…
u/HeyJD

This looks amazing. Great job.
u/Renaud___

Thanks :)
u/khalkeus

this is super neat
u/iverjo

Wow!
u/lionleaf

Brilliant!
u/tbroadley

Sweet!
u/donbright

OMG OMG OMG OMG
u/ninerdelta

mind blown
u/sfz

(((does we're not worth bow)))
u/Kalanchoe

That's so beautiful!
u/spbyrne

Incredible
u/Renaud___

wow ... thanks again for all the nice reviews :)
u/punkhaa

mice
u/punkhaa

*nice
u/gormisdomai

I joined this site for this kind of thing
u/lionleaf

On mobile you can tap at different locations for different colors
u/lionleaf

Haha, oops, that comment was for another dweet. This still remains one of my favorites!!
u/sigveseb

golfed to 137: for(l=c.width+=i=0,h=400;++i<200;)for(j=a=(t+C(i))%2;j++<50;)x.fillRect(l*C(i*i)+~~a*(w=a*h-h)*C(j),(~~a?h:a*h)*(C(i)**2+2)+w*S(j)/4,3,3)
u/FireFly

Eternal rains will come… I really like this one, very pretty!
u/zhanglongdream

啊啊啊
u/leonarven

It was really nice to solve the secret of this code! Such simple, but such brilliant! Good job!
u/sb

My favorite
u/arowberry

I love it. Reminds me of my Seattle days.
u/21medals

What does ~~ do? Like in (~~a?h:a*h)
u/Renaud___

It work as a math.floor. actually there is a difference but i dont remember how exactly
u/Renaud___

Dunno what changed in Chrome recently, but now this animation is very very slow :(
u/hollo47

#rain
u/noonat

~ is a bitwise not. It flips all the bits in the number to the opposite. Flipping again (~~) puts the bits back to what they were. It works does something similar to floor because it truncates floats to 32-bit integers as part of the operation. (But unlike floor, ~~-2.1 is -2 instead of -3.)
u/rbong

I did a detailed analysis of this effect in a medium post: https://medium.com/@r.l.bongers/visual-effec…
u/vain

cool raindrop fx

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5Mixer

function u(t) {

c.width=2e3
n=50
v=25
for(i=0;i<n;i++){o=-t%1*n
q=i*v+o
x.fillRect(q,q,i%2?n:v,i%2?v:n)
x.fillRect(620,590+Math.min(S(t*6)*99,-t*n%n),n,n)}

Feb 26 2017 6:56 AM UTC

}// 139/140

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u/Kalanchoe

Aww, this is really cute. <3
u/Tosmatobeef

heh, this just made me smile
u/5Mixer

Thanks you guys, inspires me to make more stuff :)
u/FireFly

This is really cute indeed, I love it :D
u/iverjo

#bounce

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sigveseb

remix of d/271 by u/3bl3gamer

function u(t) {

W=c.width=255;for(i=9<<12;a=i&W,b=i>>8,n=b-45,m=a-99,i--;x.fillRect(a,b,A=1/(((t+a/n)%2)^b/n),A))n*=(B=(W*S(t*29+n/5)+m*m+n*n)/5e3)<1?C(B):1

Feb 24 2017 12:35 AM UTC

}// 140/140

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Based on some of 3b3lgamer's stuff (remix link got broken).

Show more comments…
u/donbright

dude you are the king,.. O M GOSH
u/Renaud___

Fantastic :S
u/lionleaf

Fixed the remix link for ya :)
u/nashcat

holy sh*t
u/Kalanchoe

H...how? This is so impressive.
u/magna

Needs more music.
u/xem

inhuman
u/donbright

still the one that blew my mind the most.
u/lionleaf

#wobble #wobbly #water #mirror #checkerboard #refraction #sphere
u/Xaotic

wtf
u/firegodjr

#raytracing #best
u/stiaje

#witchcraft
u/sigveseb

This one used to be fast, wonder why it is slow now?
u/ximavus

OMG RAY CASTING DUDE

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caleb

function u(t) {

x.fillText(String.fromCodePoint(0x1F300+(Math.random()*0x130)|0),Math.random()*c.width-40,Math.random()*c.height);x.font="80px arial";

Feb 22 2017 3:04 AM UTC

}// 134/140

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u/boriel

Where's Wally?

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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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