Dweets awesomed by u/SchuSlime64

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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BackendForth

function u(t) {

w=50
c.width=1920
v=(i,j)=>x.lineTo((i+j)*w,w*j+S((i*i+j*j)**.5+t)*w)
for(i=w*w;i--;x.fill())x.beginPath(),v(a=i%w,j=i/w),v(a+1,j),v(a,j+1)

Jan 22 2018 3:30 PM UTC

}// 139/140

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Show more comments…
u/Xen

wow
u/aleamb

impressive!!
u/Qwitter

Nice (I detect an incoming wave of surface wave dweets )
u/Qwitter

Rough Seas: v=(i,j)=>x.lineTo((i+j)*w,w*j+C(2*j-3*t)*S(i+t)*w)
u/donbright

the triangles is just marvelous
u/zanella

My new favorite dweet.
u/tl-code

wow

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Xen

remix of d/6323 by u/yonatan

function u(t) {

for(a=99;--a;x.fill()){x.beginPath(x.fillStyle=R($=a*S(a+t*9),a-$,$+a))
for(i=3;i--;)x.lineTo(960+C(z=t+a+i)*a*9,540+S(z%(t*t))*a*7)}

Jan 22 2018 3:20 PM UTC

}// 133/140

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Shoutz 2 yonatan and Veubeke

u/sigveseb

cool style
u/Xen

thanks :)

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veubeke

function u(t) {

for(a=_=140;--a;x.fill()){x.beginPath(x.fillStyle=R($=_*S(a+t),$+_))
x.moveTo(960,540)
for(i=2;i--;)x.lineTo(960+C(i+a)*a*9,540+S(i+a)*a*9)}

Jan 22 2018 12:00 PM UTC

}// 140/140

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u/Qwitter

Tunneling bit
u/yonatan

remix: d/6323
u/sigveseb

really nice
u/innovati

Slow but worth waiting for :D
u/magna

Pretty!

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sandromiccoli

remix of d/5989 by u/sandromiccoli

function u(t) {

c.width=2e3;x.globalCompositeOperation='xor';for(i=~~(t*9);i--;){a=i*.52;x.beginPath();x.arc(960+C(a-t)*199,540+S(a)*199,119,0,7);x.fill()}

Jan 13 2018 5:32 PM UTC

}// 139/140

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u/Xaviaro

very nice!

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sandromiccoli

remix of d/5854 by u/sandromiccoli

function u(t) {

c.width=2e3;x.globalCompositeOperation='xor';for(i=~~(t*9);i--;){a=i*.52;x.beginPath();x.arc(960+C(a)*199,540+S(a)*199,199,0,7);x.fill()}

Jan 13 2018 3:30 AM UTC

}// 137/140

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little donut remix: d/5999

u/iverjo

#xor

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Exca

function u(t) {

c.width|=e=y=>x.fillRect(k,720-y,50,y<0?3:8)
for(i=32;i--;){w=S(i*C(t+i/7))*(32-i)
w*=w/2
while(w>0){x.fillStyle=R(w-=8)
k=i*60
e(w)
e(-w)}}

Jan 5 2018 2:05 PM UTC

}// 140/140

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Thanks for helping with the last few bytes go to poro

u/sigveseb

the reflections really make this one!
u/joeytwiddle

Very cool. Here is a retro-spect-rum: d/2411

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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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Show more comments…
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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Pjaerr

function u(t) {

c.style.background=R();x.fillStyle=R(...[S,C,T].map(_=>127*(_(t)+1)));a=137.5*frame;r=8*frame**.5;x.fillRect(r*C(a)+960,r*S(a)+540,8,8)

Dec 30 2017 7:50 PM UTC

}// 135/140

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A little bit of Phyllotaxis. http://algorithmicbotany.org/papers/abop/abo…

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u/Pjaerr

btw, changing the angle a from 137.5 to 137.3 or 137.6 produce different, albeit nice, patterns.
u/Bendoman

Second best thing on here by far.
u/dubistdu

WOW
u/trupples

Also.. shouldn't it be 137.5 * pi / 180 ~~ 2.39982772149 as the trigonometric functions take in radians?
u/trupples

137.5 also kind of "isolates" the spirals after a short while while 2.4 does not
u/Pjaerr

Yeah, that'll be it actually. I still thought it looked decent!
u/DiamondDrake

I was just working on a Phyllotaxis dweet, though i was trying to use ellipse that just needs way too many characters
u/@no_identd

Although the point about radians is fully correct, I'd like to point out that the most accurate IEEE single float approximation of this angle in degrees is 137.50777 (which internally becomes 137.5077667236328125)
u/lionleaf

#spiral #flower #plant #botany
u/fujimotos

This is amazingly beautiful.

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ben

remix of d/4509 by u/ben

function u(t) {

v=(a,b,g,r)=>{for(i=0;i++<r;)x.fillRect(a+=S(g),b-=C(g),r/9,2)
r>1?v(a,b,g+=o,r*=.7)&v(a,b,g+=5,r):0}
o=S(t)/9+1
c.width=500
v(250,280,0,80)

Dec 29 2017 1:23 PM UTC

}// 140/140

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blowing in the fractal wind

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u/sigveseb

Sweet!
u/Xen

very nice!
u/Bendoman

Fabulous.
u/lionleaf

Amazing!
u/lynnlangit

love, love, love it!
u/nystrand

elegant!
u/iverjo

#recursive
u/lionleaf

#fractals
u/lionleaf

#fractal . hmm, maybe not plural
u/vain

so beautiful - amazing work!

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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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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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