Dweets awesomed by u/eruonna

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: #Opposites

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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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pangolin

remix of d/2063 by u/pangolin

function u(t) {

c.width=400
f=(y,z)=>{x.moveTo(a,a);x.lineTo(y*S(z)+a,a-y*C(z));x.stroke()}
d=new Date/1e4%4320
f(a=90,d%6*1.047)
f(80,d/57%6.3)
f(60,d/855)

Mar 13 2017 2:04 AM UTC

}// 140/140

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Clock V.2

u/nick

Wait? How did you get 145 characters?
u/pangolin

It says 140/140 for me. If you copy it into notepad++ or something I think it counts linebreaks as 2, Dwitter counts linebreaks as 1.
u/recursive

If you edit it, suddenly the character count becomes correct also.

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New_Core

function u(t) {

a=c.width|=0;for(b=i=550;i--;)x.fillStyle=R(t%9>8.8?a:0,a,a=80*S(i%50*S(t-i*.1)*.01)+60,1/a*9),x.fillRect(i%50*40,0,40,b+i+a+20*S(t+i*.15))

Mar 10 2017 9:17 AM UTC

}// 139/140

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Heavy rain at sea with lightning.

Show more comments…
u/donbright

:o
u/recursive

Nice
u/iverjo

Wow
u/jsizzle

Wow!
u/sfz

moody!
u/magna

https://www.youtube.com/watch?v=oKKDfynx4ZY
u/New_Core

#water
u/New_Core

#sea #ocean
u/joeytwiddle

My favourite
u/joeytwiddle

#hiddengem #waves #rain

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sigveseb

function u(t) {

A=Z=>{W=1920/Z;for(U=Z;U--;)for(V=Z;V--;x.fillRect(U*W,V*W,W,W))x.fillStyle=R(B=Math.random()*255,B,B,1/128);Z&&A(Z-1)};t||A(128)

Mar 3 2017 10:23 PM UTC

}// 129/140

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fake perlin noise

u/SpecialAgent

ah very good :)
u/iverjo

Nice texture
u/sfz

I'd tried to do this but couldn't fit it, nice squeeze!
u/sigveseb

#texture #perlin

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New_Core

function u(t) {

c.width=1920;for(i=16;i--;)x.ellipse(1e3+300*S(t+i*.1),500+50*C(t+i*.1),160*S(-i*.5)+160,50*S(i*.1)+5,1.6+.5*S(t*.5),9.5,0,6.3);x.stroke();

Mar 3 2017 3:31 PM UTC

}// 139/140

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Show more comments…
u/sfz

wow creative!
u/sfz

reduced it by about 15 bytes in case you want to try to do something else with the extra room: c.width|=0;for(i=16;i--;)x.ellipse(1e3+300*S(t+i/9),500+50*C(t+i/9),160*S(-i/2)+160,50*S(i/9)+5,1.6+S(t)/2,9,0,7);x.stroke()
u/iverjo

So good!
u/sigveseb

is that a pseudo-3D fish? super nice!
u/donbright

marvellous
u/magna

WAAAAT
u/SpecialAgent

Magnificent depth!
u/joseprio

Really impressive :)
u/Kalanchoe

Amazing!
u/ArtsyBiker1

WHOA
u/gautjac

beautiful
u/21medals

Reduced it ±20 bytes and added beginPath() without changing any values:
u/21medals

for(c.width|=i=16;a=i--/10;x.stroke())x.beginPath(),x.ellipse(1e3+300*S(t+a),500+50*C(t+a),160*S(-i/2)+160,50*S(a)+5,1.6+S(t/2)/2,9.5,0,6.3)
u/New_Core

#fish
u/joeytwiddle

#model
u/Cloud

https://www.dwitter.net/d/17352
u/vain

incredible 3d fish

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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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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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Kalanchoe

function u(t) {

r=Math.random
c.width^=0
!t?o=[]:o.push({X:r()*1920,Y:r()*1080,x:r(),y:r()})
o.map((a)=>(x.fillRect(a.X+=a.x+=r()-.5,a.Y+=a.y+=r()-.5,4,4)))

Feb 26 2017 9:37 AM UTC

}// 140/140

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u/donbright

genius use of []
u/SpecialAgent

a clever piece of code

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sigveseb

remix of d/1232 by u/iverjo

function u(t) {

c.width^=0;for(i=5e3;p=3*t+S(t/2)*i/3e3+i%4*2,i--;x.fillStyle='red')d=C(p)-S(p),d>0&&x.fillRect(960+199*S(p)+249*S(t+i/6e3),i/4-2,199*d,1/d)

Feb 24 2017 11:39 PM UTC

}// 140/140

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u/donbright

kind of looks like a straw!
u/sigveseb

#twister

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iverjo

remix of d/104 by u/iverjo

function u(t) {

c.width^=0;for(i=9;i<2e3;i+=2)s=3/(9.1-(t+i/99)%9),x.beginPath(),j=i*7+S(i*4+t+S(t)),x.lineWidth=s*s,x.arc(960,540,s*49,j,j+.6),x.stroke()

Feb 24 2017 6:47 PM UTC

}// 138/140

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Show more comments…
u/SpecialAgent

my hat goes off to you sir!
u/Kalanchoe

That's unbelievable
u/iverjo

Try this one in fullscreen for a more immersive experience
u/Niklas

impressive!
u/donbright

:)
u/aendrew

This is incredible.
u/vonzo

reminds me to Gescom <3
u/hvge

http://www.pouet.net/prod.php?which=3397 ❤️
u/badthai

How did you come up with this?
u/iverjo

@badthai: First I made a classic tunnel effect (like this: https://www.dwitter.net/d/205). Then I made several remixes of it by tweaking parameters. This was one of the results. See also https://www.dwitter.net/d/106
u/iverjo

#tunnel
u/vain

cool segmented tunnel fly

dwitter.net | eruonna (1785)