Dweets awesomed by u/d0n.key

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: #Food

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p01

function u(t) {

c.width|=0;for(n=200;n-=1/64;x.fillRect(n%3*666,n*5,h=8-k,h))for(r=C(t*3),i=S(t*4),k=28;--k/r;i=j)j=2*r*i+1-n/99,r=r*r-i*i+1-n%3

Feb 21 2017 9:42 PM UTC

}// 128/140

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u/donbright

wow!
u/iverjo

#fractal
u/galactustrombone

IS THAT THE MANDELBROT SET?
u/katkip

yep
u/joeytwiddle

#mandelbrot
u/DaSpider

Somehow this runs much faster in my codebase https://repl.it/@rogerio_neves/Dwitter-codeb…

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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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Show more comments…
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

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iverjo

function u(t) {

c.width=1920;x.beginPath();x.beginPath();x.arc(960,500,199,t*4+2*C(t),t*4+3.2+2*S(t));x.lineWidth=40;x.strokeStyle='#5592FB';x.stroke();

Jan 14 2017 4:48 PM UTC

}// 136/140

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Android-style loading spinner

u/iverjo

119 characters: c.width^=0;x.beginPath();x.arc(960,500,199,t*4+2*C(t),t*4+3.2+2*S(t));x.lineWidth=40;x.strokeStyle='#5592FB';x.stroke()
u/iverjo

#loading #spinner

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iverjo

remix of d/143 by u/chunnoo

function u(t) {

c.width=1920;for(i=-2;i<2;i+=.05)for(j=-4;j<4;j+=.05)a=i*j-3*T(t),1/(j*j+i*i)+1/(a*a+i*i)>1&&x.fillRect(j*240+960,i*240+540,12,12)

Jan 14 2017 3:44 PM UTC

}// 130/140

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Let the dweetoff begin!

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iverjo

remix of d/568 by u/iverjo

function u(t) {

x.fillStyle=R(150,84,249,.01);X=S(t);x.lineTo(960+512*C(t)*S(6*t),540+512*S(t)*S(6*t));x.fill()

Dec 31 2016 3:24 PM UTC

}// 95/140

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#flower

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BriSeven

remix of d/546 by u/BriSeven

function u(t) {

X=960,Y=80+1080*t%900,a=1;for(i=99;--i;)x.fillStyle=T(a)<9?R(99-a,a/3,0,.3):"#FFA",x.fillRect(X+=S(a)*Y/50,Y+=C(a)*4,8,8),a+=7*Math.random()

Dec 23 2016 4:34 AM UTC

}// 140/140

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Show more comments…
u/lionleaf

Oh wow, that is amazing!
u/sigveseb

Very nice!
u/iverjo

Wonderful!
u/hamptonio

Happy little tree!
u/Beginner

Wow!
u/Xen

Done Re-mi(X)en 2878
u/Xen

Done Re-mi(X)en 2878
u/Xen

why post twice? :-/
u/joeytwiddle

Quantum commenterference I guess. This one is my favourite :)
u/iverjo

#tree
u/lionleaf

#christmas #christmastree #color
u/rawbits

A sad little tree. He has no friends. (Bob would be proud)
u/vain

Amazing procedural and beautifl tree. Mindblowing coding!

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icecuber

function u(t) {

c.width=432;F=(n,r=0,m=1)=>n?F(n/9|0,n/3%3^1?r+n%3*m:m*3-1-r-n%3*m,m*3):r%27*9;for(j=6;j--;)k=j?t*8-j-7:t<<3,x.fillRect(F(k|0),F(k/3|0),7,7)

Nov 4 2016 2:16 PM UTC

}// 140/140

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u/iverjo

Snake!
u/donbright

lol really wishing for sound effects now
u/lionleaf

#snake #game
u/katkip

#ai
u/joeytwiddle

#tribute

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New_Core

function u(t) {

c.width=2e3;o=Date().split(/[ :]/);for(i=3;i--;){q=o[i+4]*0.105;if(i<1)q=q*5;x.moveTo(1e3,f=500);x.lineTo(1e3+f*S(q),f-f*C(q));x.stroke()}

Sep 23 2016 9:15 AM UTC

}// 138/140

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u/lionleaf

Oh awesome! It's actually correct as well
u/New_Core

#clock

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New_Core

function u(t) {

x.fillStyle=R(b=2e3,b,b,0.1);x.fillRect(0,0,b,b);x.beginPath();for(i=b;i--;)x.lineTo(i/2*C(t)+i*S(g=t+i)+960,i/4*S(t)+i*C(g)+540);x.stroke()

Aug 21 2016 3:10 PM UTC

}// 140/140

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Show more comments…
u/iverjo

Dat tunl!
u/New_Core

maybe its a spinning chinese hat from top
u/iverjo

You're right, I can trick my brain into beliving that. Funky! It's like one of those illutions where you see different things based on how you look at it/think of it
u/iverjo

*believing
u/iverjo

Dwitter really needs an "edit comment" feature :P
u/lionleaf

Wow!!
u/giel

Nice!
u/lionleaf

#rotation #hat #in_or_out #lighting
u/joeytwiddle

#shiny
u/vain

Wow! Very nice!

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iverjo

function u(t) {

i=W=c.width=960;X=250*t%W;G=(1-S(X/29))*.3;x.lineWidth=80;x.arc(X,200,40,G,6.29-G);x.stroke();while(i>X)x.fillRect(i,190,20,20),i-=190

Jul 22 2016 12:34 AM UTC

}// 134/140

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Pacman, inspired by tamberlo

Show more comments…
u/tamberlo

thank you for cleaning up my idea ;) your solution is very neat
u/iverjo

Thanks :) It lacks the yellow color, though. I'm not sure I could hack that in without removing the rectangles
u/iverjo

Golfed a bit (128 characters): i=W=c.width=960;x.lineWidth=80;x.arc(X=250*t%W,200,40,G=.3-.3*S(X/29),6.29-G);x.stroke();for(;i>X;i-=190)x.fillRect(i,190,20,20)
u/donbright

lol
u/iverjo

#pacman
u/rodrigo.siqueira

#atari

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