Dweets awesomed by u/bschwb

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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lionleaf

remix of d/3719 by u/soer9606

function u(t) {

c.width=1920;
for(i=0; i<1000; i++)
x.fillRect(940+900*S((t+i)), 700+400*S(2.5*t*t+i)/(1+.2*t*t)-400/(.2*t*t+1), 20, 20)//Add gravity :D

Dec 26 2017 11:01 PM UTC

}// 136/140

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Had to add some gravity so I finally can go to bed!

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snail

function u(t) {

x.transform(540,0,0,540,(c.width=1920)/2,540);
for(i=-t,n=20;n--;i+=t/8)
x.lineTo(C(i), S(i));
x.fill("evenodd");

Dec 26 2017 10:19 PM UTC

}// 113/140

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u/sigveseb

starts of basic then gets pretty cool
u/lionleaf

It gets cooler and cooler the longer you wait!
u/vain

i love it

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lurifax

remix of d/3178 by u/cantelope

function u(t) {

for(i=2e3;i--;x.fillStyle=R(C(t)*128+128,0,C(i)*128+128,.07))x.fillRect(960+S(p=i/314)*(d=250+S(p*3+C(t))*(S(t)*99)*C(t)*4),540+C(p)*d,9,9)

Sep 23 2017 6:55 PM UTC

}// 139/140

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cantelope

function u(t) {

for(x.globalAlpha=.07,x.fillRect(0,0,q=i=2e3,q);i--;)x.clearRect(960+S(p=i/318)*(d=300+S(p*5+C(t/2)*9)*(140+S(t)*70)*C(t*2)),540+C(p)*d,9,9)

Sep 20 2017 4:28 AM UTC

}// 140/140

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u/lionleaf

So smooth!
u/cantelope

change p*5 to p*3 or whatever for different shapes <3

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donbright

remix of d/2025 by u/@literallylara

function u(t) {

c.width^=0
onmousemove=e=>T=e.pageX/42
R=_=>S(s)+(S(s++)>0?0:2)-1
for(s=i=H=540;i--;)x.lineTo(1e3+(R()*C(T)-R()*S(T))*H,H+R()*H)
x.stroke()

Apr 10 2017 11:40 PM UTC

}// 139/140

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homage to @literallylara 's 2025 with mouse.. (please try moving your mouse over screen)

u/donbright

thanks 2 @cantelope / @manga for T trick, @Jenky for mouse inspiration
u/joeytwiddle

I like the interactivity, and Firefox support. And one of the tricks is really going to save me some characters!
u/gabrielsroka

#interactive

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mxfh

function u(t) {

for(x.drawImage(c,b=n=0,-16),i=w=960;a=C(i/w*4),b=!b,i-->-w;n+=C(t*i*i),x.fillStyle=R(e=b*w,e,e))x.fillRect(i+b+w,a>0?w+a*a*n*2+b*4:w,2,w)

Mar 13 2017 10:35 PM UTC

}// 138/140

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dwitter Album Cover Art https://blogs.scientificamerican.com/sa-visu… (deleted the prior version)

Show more comments…
u/donbright

wonderful
u/SpecialAgent

Nice homage to a great band :)
u/p01

Super smart implementation! Wish I saw it before I did https://www.dwitter.net/d/2958
u/zanella

I saw i--> and thought it was a new JS operator. :)
u/lionleaf

#album #album_cover
u/mxfh

#unknownpleasures #joydivision
u/rodrigo.siqueira

Here is the original Ph.D. dissertation page where this were published: https://twitter.com/ChristiansenJen/status/1…

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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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lionleaf

remix of d/1335 by u/lionleaf

function u(t) {

c.width=2e3;m=S(t*2)*250;x.translate(960,540);for(i=1;i<9799;i++){a=(i%340);x.rotate(.017);x.fillRect(a?(i/999|0)*50:0,m,a?5:450,3)}

Feb 25 2017 6:37 PM UTC

}// 132/140

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#cobweb

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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

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mxfh

function u(t) {

d=x.getImageData(0,0,w=c.width=256,h=144);for(i=0;i<h;i++)for(j=0;j<w;j++)d.data[(i*w+j)*4+3]=(i-j&j+i)*t%w;x.putImageData(d,0,0)

Feb 20 2017 3:43 AM UTC

}// 129/140

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u/jim

This is my favorite demo on Dwitter so far
u/mxfh

first draft on documenting the more obvious parts: https://news.ycombinator.com/item?id=13712558
u/hamptonio

pretty sick
u/mxfh

drone audiosoundtrack paste this:
u/mxfh

;new Audio("data:audio/wav;base64,"+window.btoa('RIFF$WAVEfmt data'+x.getImageData(0,128,c.width,32).data.reduce((data,byte)=>data+String.fromCharCode(byte),''))).play()
u/mxfh

//safer encoding: ;new Audio("data:audio/wav;base64,UklGRiQAAgBXQVZFZm10IBAAAAABAAIAAIAAAAAAAgAEABAAZGF0YQAA"+window.btoa(x.getImageData(0,128,c.width,32).data.reduce((data,byte)=>data+String.fromCharCode(byte),''))).play()
u/Xaviaro

Breathtaking!
u/lionleaf

#fractal #recursive
u/Galaxtone

Of you let it run long enough it returns to the original image but sort of pixelated and a little more and it'll return to the original image

dwitter.net | bschwb (5144)