Dweets awesomed by u/Bendoman

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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SpecialAgent

function u(t) {

π=Math.PI;h=540;q=S(t)
x.beginPath()
x.arc(960,h,q*q*h,1*π,3*π)
x.stroke()

Feb 28 2017 5:13 PM UTC

}// 74/140

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u/iverjo

Some interesting moirè patterns there
u/donbright

resembles 'circles and squares' fractal a little bit

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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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recursive

remix of d/1385 by u/tbroadley

function u(t) {

with(x)for(strokeStyle=R(c.width^=0),i=3;i++<11;stroke())beginPath(),arc(960,540,40*i,m=t+(0<(a=i*S(t)/4)||3)*a,2*t+4*a-m),lineWidth=i*i/5

Feb 26 2017 6:32 PM UTC

}// 138/140

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Golfed it down enough to add some color

u/tbroadley

Nice!

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sigveseb

remix of d/304 by u/sigveseb

function u(t) {

c.width=512;x.beginPath();x.translate(256,128);(a=b=>{b&&a(b-1);x.rotate(1+S(t/99));x.lineTo(C(t+b/90)*b/8+b/4,9+S(t)*99)})(512);x.stroke()

Feb 25 2017 9:43 PM UTC

}// 139/140

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u/donbright

oroborous?
u/hogan

incredible breadth of textures
u/Xen

nice :-)

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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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andy

function u(t) {

a=b=>S(t*b)*128+128
x.fillStyle=R(a(1.3),a(3),a(2))
x.fillRect(S(t*3)*960+960,C(t*2.5)*539+539,10,10)
x.drawImage(c,S(t)-2,C(t)-2,1924,1084)

Feb 23 2017 10:30 AM UTC

}// 140/140

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u/magicmarc

First line as "a=b=>128*(S(t*b)+1)" brings this to 140.
u/andy

Thanks, that's right. Didn't even realize i was over 140 :)
u/lionleaf

Are you seeing over 140 characters? On chrome it says 140/140 at least.
u/andy

weird, yesterday it said 143.
u/michelinux

It's probably because on Windows the new line takes 2 characters ('\n\r'). Use ';' instead of new line and you should have a more consistent behaviour.
u/andy

still weird, i don't have any windows machines.
u/SpecialAgent

the simplicity of that zoom blows my mind, great work!

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p01

function u(t) {

for(d=2e3;d--;x.fillRect(960+d*C(a),540+d*S(a),24,24))a=Math.random()*6.3,x.fillStyle=R(e=255*C(t-1e3/d*S(t-a-C(a*99/d))),99*S(a-e/d),6e4/d)

Feb 22 2017 11:45 PM UTC

}// 140/140

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u/sigveseb

Nice!
u/ninerdelta

wow!
u/p01

Thanks :)
u/ArtsyBiker1

Awesome!
u/TheGreatRambler

Messing with my brain!
u/lionleaf

#tunnel

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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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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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jczimm

function u(t) {

c.width=1920;
for(i=0;i<300;i++)for(j=0;j<6;j++){x.fillRect(960+200*C(i)*S(T(t/1.1)+j/i),540+200*S(i),10,10)}

Feb 22 2017 5:23 PM UTC

}// 109/140

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u/sigveseb

Very stylish!
u/ninerdelta

nice!
u/Kalanchoe

truly a compact loading spinner!
u/jczimm

Thanks!
u/serko

Any way to view this fullscreen on an iPhone?
u/tischler

Awesome. Negating t makes it more aerodynamic. =)
u/Valscor

This is so cool!
u/over

This would be an amazing loading animation !
u/katkip

This is so easy to make and it has 297 likes
u/Leodude123

ねあt
u/Leodude123

Neat!
u/Scaledish

Could I use this as a animation for my site?
u/jczimm

Yes! Consider it CC0-licensed

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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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