Dweets awesomed by u/Run

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: #ScaryMovies

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lowpoly

function u(t) {

for(y=c.width=c.height=n=80;y--;)for(z=n;z--;)x.fillRect(z,y,1,1,x.fillStyle=((Math.sqrt(z*z+y*y))^(Math.atan2(y,z)*n+t*n))&8?'#4a8':'#445')

Jan 3 2018 6:44 PM UTC

}// 140/140

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Experimenting with a "classical" formula

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ellisk1

remix of d/5056 by u/ellisk1

function u(t) {

x.fillRect(0,0,q=c.width=2e3,q);for(i=q;i--;)r=99+i**4/7e7/t,x.fillStyle="#fff",x.fillRect(1e3+C(z=i%q*i+3e2*t/r)*r,1e3+S(z)*r-i,8+6*S(z),5)

Jan 3 2018 3:46 PM UTC

}// 140/140

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A little remix of my black hole dweet

u/RomanW

Really fantastic!
u/iverjo

Nice 3D effect!
u/M1T0

very impressive
u/lionleaf

#tunnel #black_hole #tornado
u/vain

Looks so great!

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hoplite

function u(t) {

t=C(t*9)*255
x.fillStyle=R(t+30,t,t+99,.1)
x.fillRect(C(t)*9+954,S(t)*9+534,9,9)
x.drawImage(c,-48,-27,2016+S(t),1134+C(t))

Jan 3 2018 12:18 PM UTC

}// 124/140

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u/Xen

nice, reminds me of Dr.Who
u/joeytwiddle

the theme tune was playing in my head as I read Xen's comment!

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crimbles

function u(t) {

for(i=1;i<390;i++){
if(i%3){x.fillStyle='#fff';x.rotate(-.9)}else{x.fillStyle='#000';x.rotate(.9)}
x.fillRect(t,i*5,T(i)*10,T(t))}

Jan 3 2018 8:58 AM UTC

}// 130/140

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Generative glitch art

u/crimbles

tbf basically everything on here is generative glitch art in some sense...
u/joeytwiddle

#generative #art #glitch #black+white

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Xen

remix of d/3167 by u/Xen

function u(t) {

for(i=c.width|=0;i--;x.fillRect(960+S(p=.9*i+S(t)*3e3/i*S(t))*(d=i*i/1e3)-i*C(t),540+C(p)*d-i*S(t),s,s))x.fillStyle=R(Z=t*i%255,s=i/5,255-Z)

Jan 2 2018 9:31 PM UTC

}// 140/140

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Show more comments…
u/jbl

WOW! 💯
u/lionleaf

Testing new links u/Xen
u/Xen

Yay! d/5309
u/donbright

i would have said this was impossible if i didnt see it
u/lionleaf

#alien #needle #color #floppy #rotation
u/sybarita

Yo what ... this is amazing
u/mrperson59

Is this what sleeping beauty pricked her finger on?

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RomanW

remix of d/5233 by u/RomanW

function u(t) {

z=34;f=(60*t)%960;'ȏ܀လa8๼0৷耠ĻƟ臿ﰿ聛＝〇ﾛ态繨ﰀε＀Əﾀ؇￠ᨃ￠簁｠㼀＀羀羀翀⟀῀㏠࿀ᇰϠᡰǰ࠸xࠌ࠘ం耄᠀〆㠀ข瀡Ǡ耿'.charCodeAt(f/16)>>f%16&1&&x.fillRect(f%31*z,~~(f/31)*z,z,z)

Jan 2 2018 4:12 PM UTC

}// 140/140

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u/Pjaerr

That's cool.
u/Chipnstein

Was expecting dickbut... not exactly disappointed but still cool
u/aemkei

OMFG! This is incredible!!
u/aemkei

but shorter but ugly: f=60*t;x.fillRect(f%31*9,f/3,'ȏ܀လa8๼0৷耠ĻƟ臿ﰿ聛＝〇ﾛ态繨ﰀε＀Əﾀ؇￠ᨃ￠簁｠㼀＀羀羀翀⟀῀㏠࿀ᇰϠᡰǰ࠸xࠌ࠘ం耄᠀〆㠀ข瀡Ǡ耿'.charCodeAt(f/16)>>f%16&1,9)
u/RomanW

Nice aemkei, thanks!
u/oldspork

This is amazing. I'm brand-new to coding and very new to Dwitter; how on Earth do all of those symbols and letters code for a picture of the Earth?
u/RomanW

Hi oldspork! The magic happens with the function charCodeAt. This function gets the numeric value of one character at a time. Since these are UTF-16 characters, you can get 16 bits of information in one character.
u/lionleaf

#globe #earth #bitmap #pixelart
u/Purpzie

Is there an easy way to make these kinds of things? (specifically how the data for each pixel is stored)
u/dsamarin

String.fromCharCode.apply(null, new Uint16Array(34).map((r) => Math.random()*0xffff))

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nystrand

function u(t) {

for(i=w=3e3,a=b=g=333*T(t%9/7);j=(i^a*a)%4,i--;x.fillRect(a+=g+C(j*5+t)*g-a/2-w+g,b+=g+S(j*9+t)*g-b/2-w,s,s),w=2)x.fillStyle=R(s=w*9,w,s,.1)

Dec 28 2017 2:50 PM UTC

}// 140/140

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Show more comments…
u/sigveseb

This one is fantastic! Good job indeed
u/Bendoman

Brilliant!
u/Xen

very very impressive!
u/magna

HOW ON EARTH
u/nic

MIND:=BLOWN
u/lowpoly

Gawd, I learnt a lot today
u/Citiral

Since when does Javascript support black magic?
u/sigveseb

Needs more upvotes!
u/doof

this was such a delight to unpack :)
u/Lazy1337

wow
u/aleamb

amazing
u/iverjo

I'm awestruck
u/xem

unbelievable
u/trapkid

lol
u/aleamb

epic! one of the greatest dwitter
u/ThreeNPlusOne

sierpinski triangle :D
u/xem

It'd be nice to have a blog post explaining it :) (please?)
u/trupples

I didn't look much into it but it might have to do with a thing I read about once where if you have a point that "walks" half the distance towards a random corner of a triangle you'll end up drawing a sierpinski triangle sorta like you can see in https://www.dwitter.net/d/5097
u/trupples

And according to http://distrustsimplicity.net/articles/sierp… if you were to use 4 points instead of 3 you'd get a tetrahedron like in this dweet. Fascinating stuff
u/stiaje

#witchcraft
u/lionleaf

#top_of_the_year
u/Scaledish

wow
u/Tekmap

👏👏👏👏👏
u/vain

that's not from this world! incredible code / 3d fx and blur
u/rodrigo.siqueira

3D flying #sierpinski pyramid #fractal

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Run

function u(t) {

c.width*=1;
for(i=0;i<1550;i++){
x.fillRect(X=i+S(t+i)*300,400+200*C(t+i)+200*S(X/300+t),50,50);x.fillStyle=`hsl(`+(X/7+t*30)+`,80%,50%)`;}

Mar 2 2017 6:42 PM UTC

}// 139/140

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More of the tubes of the internet.

u/sfz

shwank

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Run

function u(t) {

for(i=0;i<1050;i++){
x.fillRect(X=i+S(t+i)*300,400+200*C(t+i)+200*S(X/300),50,50);
x.fillStyle=`hsl(`+(X/7+t*30)+`,80%,50%)`;
}

Mar 2 2017 6:04 PM UTC

}// 127/140

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A series of tubes #bartjs

u/Run

The internet is a series of tubes. This is the opening of just one of them.

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quidnovum

remix of d/888 by u/jczimm

function u(t) {

c.width=1920;q=l=>1+S(l)*S(l)
for(i=0;i<300;i++)for(j=0;j<6;j++){x.fillRect(960+200*C(i)/q(i)*S(T(t/1.1)+j/i),540+200*S(i)*C(i)/q(i),10,10)}

Mar 2 2017 6:03 PM UTC

}// 140/140

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