Dweets awesomed by u/recursive

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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Tosmatobeef

remix of d/1525 by u/lionleaf

function u(t) {

c.width=2e3;v='Thanks for making Dwitter!';for(i=v.length;i--;)x.font=100+'px Arial',x.fillText(v[i],i*81,540+S(t*10+i)*10)

Feb 28 2017 6:26 AM UTC

}// 123/140

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u/lionleaf

You're welcome! Fun to see activity here :)
u/sigveseb

:D

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lionleaf

remix of d/431 by u/lionleaf

function u(t) {

c.width=2e3;v='Avatars from gravatar!';for(i=v.length;i--;)x.font=130+S(t*5)*30+'px Arial',x.fillText(v[i],i*89,540+S(t*9+i)*20)

Feb 28 2017 12:06 AM UTC

}// 128/140

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Avatars have been added! They are fetched from gravatar.com based on your email, so register there to get one. Thanks to u/sigveseb for the implementation :)

u/lionleaf

#feature

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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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SpecialAgent

function u(t) {

w=960,h=540,a=w+S(t*t)*99,b=h+C(t*t)*99
x.fillStyle=R(S(t)*255,0,128+C(t)*128)
x.fillRect(a,b,9,9)
x.drawImage(c,S(t)-2,C(t)-2,1924,1084)

Feb 26 2017 7:37 PM UTC

}// 137/140

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give it a minute to warm up :)

u/donbright

wow.. smooth and mysterious

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tbroadley

remix of d/1429 by u/tbroadley

function u(t) {

w=c.width=99;h=c.height=56;for(i=0;i++<h;)for(j=0;j++<w;)f=(k,d)=>99*S(t+k/d)+155,x.fillStyle=R(f(w,i),f(h,j),f(j,i)),x.fillRect(j,i,1,1)

Feb 26 2017 6:52 PM UTC

}// 137/140

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Show more comments…
u/marsch8

fdjak
u/marsch8

whoooops! Didn't mean to write that. Cool dweet, though!
u/KHymatim

fdjak
u/magna

fdjak
u/unframework

fdjak
u/tbroadley

https://www.dwitter.net/d/1429
u/joeytwiddle

#fdjak #colors

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tbroadley

remix of d/720 by u/tbroadley

function u(t) {

w=c.width=99;h=c.height=56;for(i=0;i++<h;)for(j=0;j++<w;)f=(k,d)=>99*S(3*(t+k/d))+99,x.fillStyle=R(f(i,w),f(j,h),f(j,i)),x.fillRect(j,i,1,1)

Feb 26 2017 6:38 PM UTC

}// 140/140

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u/iverjo

Parallaxing disco floor

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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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Renaud___

function u(t) {

r=d=>9*C(d)-Math.floor(9*C(d));k=1e3;c.width^=0;for(i=0;i<k;i++)x.fillRect((k*r(i)+r(i+2)*t*99)%k,(k*r(i+1)+r(i+3)*t*99)%k,9,9);

Feb 26 2017 5:26 PM UTC

}// 128/140

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kchplr

function u(t) {

for(c.width^=0,i=1296;i--;X=i%48,Y=i/48|0,d=1-((X-24)*(X-24)+(Y-13)*(Y-13))/300,s=(200*S(t*C(d))*d*d)%45,x.fillRect(X*40-s/2,Y*40-s/2,s,s));

Feb 26 2017 3:48 PM UTC

}// 140/140

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u/sigveseb

I like this!
u/Kalanchoe

Somewhat reminds me of Halite: halite.io
u/iverjo

Nice technique!
u/KHymatim

Mmmmm

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kchplr

function u(t) {

for(c.width^=0,z=S(t)**9,n=500;n--;w=z*n*C(t+n*z/20)/1e6,x.setTransform(.5+w*1e3,n*w,n*w,.5,940,530),x.fillRect(-250,n-250,500,5));

Feb 26 2017 1:04 PM UTC

}// 132/140

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