Dweets awesomed by u/kaicarver

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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Current theme challenge: #Opposites

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Niklas

function u(t) {

for(c.width|=0,m=960,o=540,q=99,i=q;i--;)for(a=6.28*i/q+t,k=m+C(a)*o,l=o+S(a)*o/2,j=q;j--;)b=6.28*j/q,x.fillRect(k+C(b)*q*C(a),l+S(b)*q,3,3)

Feb 25 2017 2:21 PM UTC

}// 140/140

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u/iverjo

Nice :) Can we make it look more like 3D?
u/Niklas

thx! i'll try :)
u/Niklas

here we go: https://www.dwitter.net/d/1344

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walsh9

function u(t) {

T=t*60|0,d=T%64*33,e=(T>>6)*36,s=d<1||Math.random()>.5&&e>1,f=s?8:33,g=s?36:8,x.fillRect(d,e,f,g),x.lineWidth=16,x.strokeRect(0,0,1920,1080)

Feb 25 2017 8:04 AM UTC

}// 140/140

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u/donbright

hey that is super cool
u/sigveseb

reminds me of the old C64 BASIC maze: http://www.slate.com/content/dam/slate/artic…
u/walsh9

I'm using this 'binary tree' maze algorithm: http://weblog.jamisbuck.org/2011/2/1/maze-ge…

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iverjo

remix of d/89 by u/iverjo

function u(t) {

c.width^=0;for(i=5e3;i--;)p=3*t+S(t/2)*i/3e3+i%4/.637,d=C(p)-S(p),d>0&&x.fillRect(960+199*S(p)+249*S(t/.7+i/6e3),i/4-2,199*d,1/(d+1))

Feb 24 2017 6:50 PM UTC

}// 133/140

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Show more comments…
u/SpecialAgent

nicely done!
u/Kalanchoe

Flawless!
u/donbright

oh wow, the shading!
u/sigveseb

Good twister! Can we add color?
u/iverjo

Color would be awesome :) Feel free to try to add it
u/sigveseb

https://www.dwitter.net/d/1267 red
u/iverjo

Here's a purple version. Had to make some compromises. https://www.dwitter.net/d/1278
u/donbright

i attempted a rainbow version https://www.dwitter.net/d/1282
u/iverjo

#twister
u/vain

nice twister

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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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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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aemkei

function u(t) {

I=t?Math.random(Y++)-1.9&I+2:Y=0;for(i=12;i--;D=X=>Y<300&&x.fillRect(900+X,s*j+G*Y+500,4,4)||X,D(-D((G=C(a=1.05*i))*j-(s=S(a))*Y)))j=i>5&&I

Feb 21 2017 9:16 AM UTC

}// 139/140

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Draws a random snowflake. Based on https://github.com/codegolf/snowflake

u/iverjo

Pretty

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xem

function u(t) {

x.clearRect(0,0,9999,9999);x.font="900px arial";x.fillText(String.fromCodePoint(0x1f300+~~(t*10)),400,800)

Feb 20 2017 8:48 PM UTC

}// 106/140

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More info and demos: https://github.com/xem/miniUnicode

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bakkot

function u(t) {

x.fillRect(t?v:y=v=0,y+420,2,2,c=9*Math.random(c<2?c<.1?y=!(v/=6):v=y/4+v/4+(y=c<1?y/5-v/4:v/3-y/7,c<1?266:63):y=y*6/7+(v=v*6/7+274)/25))

Feb 20 2017 7:54 PM UTC

}// 137/140

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This one needs a few minutes to show up.

u/iverjo

Nice :) Could you make it converge faster somehow?
u/bakkot

iverjo: Not without drawing more points each tick, which I can't find a way to do without going over.

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mxfh

function u(t) {

c.width=w=1920;π=Math.PI/2;λ=0;r=w/4;for(φ=-π;φ<π;φ+=1/r){λ+=.1;x.lineTo(C(φ)*S(λ-t)*r+w/2,(C(t)*S(φ)-S(t)*C(φ)*C(λ-t))*r+r)}x.stroke()

Feb 20 2017 11:57 AM UTC

}// 135/140

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simple orthographic projection; try some factors on the lat λ and lon φ offsets t

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u/mxfh

simple orthographic projection; try some factors on the lat λ and lon φ offsets t
u/wicktwo

Niiiice!
u/as

i love this one
u/ssg

nice variable names!
u/donbright

so elegant
u/lionleaf

#sphere
u/lionleaf

#d3 . (3d is currently not a valid hashtag)
u/BirdsTweetCodersDweet

#whichwayround #inorout

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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

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aemkei

function u(t) {

for(c.width=90,b=[a=this.b||0],i=3e4;i--;x.fillRect(i%90,i/90,1,b[i]=a?3==d|a[i]&2==d:24*i%7%2))for(d=0,j=5;e=87*(2<j--)+j;)d+=a[i+e]+a[i-e]

Feb 19 2017 10:33 PM UTC

}// 140/140

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u/lionleaf

wow, awesome! Game of life!
u/iverjo

Impressive
u/aemkei

Based on aem1k.com/life
u/aemkei

#gameoflife

dwitter.net | kaicarver (1471)