New #rain dweets

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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pavel

remix of d/10356 by u/pavel

function u(t) {

for(x.fillRect(0,0,X=w=c.width=600,w);X-=6;)for(r=X**2.3%w,Y=h=r*t&504;Y;x.fillText(r*Y&1,X,Y-=8))x.fillStyle=R(b=Y-h||w,250+Y-h,b)

Oct 15 2018 12:05 AM UTC

}// 131/140

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#matrix #rain v3 shorter, faster, and with variable speed droplets

u/joeytwiddle

Let the white burn briefly: b=250+(Y-h)*6

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pavel

remix of d/10354 by u/pavel

function u(t) {

for(x.fillRect(0,0,i=W=c.width=600,W);i;i-=5)for(j=0,a=((W*i^1e7)+t*W)%W;j<a;x.fillText(i%j&1,i,j+=9))x.fillStyle=R(b=(a-j<9)<<8,300+j-a,b)

Oct 13 2018 4:01 AM UTC

}// 139/140

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Matrix Rain v2

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f8f82804

remix of d/7094 by u/AnnanFay

function u(t) {

eval(unescape(escape`睩瑨⡸⥦潲⡸⹲㵦楬汒散琬爨〬〬挮睩摴栽猽㌸㐬猩ⱳ桡摯睃潬潲㴧慱畡✬獨慤潷䉬畲㴵ⱺ㴴攳㭺ⴭ㭲⡾繡⩷⩃⡺⤫椪⨳╳Ⱘ⡡⩳⵾繡⩷⤪⠲⭺┱⤫眪匨稩⤯㐬㌬㌩⥡㴨琫䌨椽稥㤹⤩┲ⱷ㵡⩳⵳`.replace(/u(..)/g,"$1%")))

Sep 12 2018 9:23 PM UTC

}// 133/140

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#electric #neon #rain (redux); see d/9796

u/donbright

haha! amazing! well... maybe a bit slow on my old computer
u/donbright

damn thats cool

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f8f82804

remix of d/9777 by u/f8f82804

function u(t) {

with(x){for(shadowColor=R(fillRect(0,0,i=c.width=294,i),i,i);i-=3;lineTo(i,y+32))moveTo(i-6,y=99*S(i^7*t));for(j=9;shadowBlur=j--;)stroke()}

Sep 12 2018 5:42 PM UTC

}// 140/140

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#electric #neon #rain, as requested by u/donbright

u/f8f82804

This is the best solution I found to having them not be too fast; we only change the pattern 7 times a second. Using S() means there are occasional patterns in the drops. Change to y=99*Math.random() to see the difference.
u/f8f82804

also see d/9803
u/donbright

hee hee, thanks

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anthonylewis

function u(t) {

t?0:a=[];w=c.width^=0;Z=Math.random
a.unshift([Z()*w,Z()*w])
a.forEach((e,i)=>{x.beginPath(x.stroke());x.arc(...e,i*3,0,7)})
a.splice(50,1)

May 11 2018 2:16 AM UTC

}// 139/140

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Raindrops

u/joeytwiddle

Elegant code, elegant output!
u/vaibhav

great!...How to implement it in my application
u/fujimotos

#rain

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rikardlindstrom

function u(t) {

x.fillStyle=R(2,9,9,.04)
x.fillRect(0,0,v=2E3,v)
for(i=99;i--;y=(i*i+t*v)%v,x.fillStyle=`HSL(${y*11},99%,50%)`,x.fillText(0,(i*337)%v,y));

Jan 2 2018 2:29 AM UTC

}// 138/140

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u/donbright

nice, electric rain...
u/iverjo

#rain

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sigveseb

function u(t) {

x.fillStyle=R(w=(r=2e3*Math.random(x.font='5em A')|0)%2,w*r,0,.1+w);w?x.fillText('茶骨璧'[r%3],r,99):x.fillRect(0,0,r*9,r);x.drawImage(c,0,99)

Dec 31 2017 2:34 AM UTC

}// 140/140

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enter the matrix!

u/sigveseb

#matrix #rain

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mmastrac

remix of d/3275 by u/magna

function u(t) {

for(c.width|=i=d=1920;z=i+250,i-=.5;x.fillText("💧",d*T(z*1122),(t+i*i*i+C(i+t))*1e3%2e3))x.globalAlpha=d/(d+(z*i+t*99)%8e4),x.font='46px a'

Oct 12 2017 4:13 AM UTC

}// 139/140

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u/cantelope

mmm can't wait for the rainy season :)
u/joeytwiddle

Nice sticky raindrops
u/joeytwiddle

#rain
u/f8f82804

#emoji

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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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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

dwitter.net | #rain