Dweets awesomed by u/wclang

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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veubeke

remix of d/5008 by u/Boomerang

function u(t) {

r=a=>x.fillRect(a*99,540+s*99,99,9)
for(x.fillStyle=R(a=19,0,0,.05);a--;r(16+c*s))s=S(_=t/9+a/3)*3,c=C(_),c<.5&&r(2+c*s),r(7+c*2),c<0&&r(12)

Dec 31 2017 8:30 PM UTC

}// 140/140

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u/coderkid

Awesome! Happy new year!
u/Pjaerr

Happy new year!
u/sigveseb

Wow nice, rare to see a custom font in a dweet!
u/sigveseb

And really cool to see the iteration from remix OP to this
u/magna

Damn!
u/joeytwiddle

#text

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quuxman

remix of d/4911 by u/wclang

function u(t) {

A=(a,b)=>{for(i=w;i-=8;x.beginPath())x.arc(a%w,b%(w/2),i,0,7),x.stroke()}
c.width=w=808
A(a=s=9*t,a)
A(a=w-s%w,a)
A(t*2,s)

Dec 31 2017 10:50 AM UTC

}// 122/140

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fair amount of bytes left to go nuts :)

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rikardlindstrom

function u(t) {

t||x.translate(980,540)
c.style.background=R(x.fillStyle='#fff',++t<4&&x.drawImage(c,~x.fillText(0,~x.scale(s=1+C(t)/20,s),0),~x.rotate(t)))

Dec 31 2017 7:03 AM UTC

}// 140/140

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Show more comments…
u/Flopster

Wow! Too bad it doesn't reset, but this looks incredible!
u/rikardlindstrom

Thanks! All I could fit in 140 characters. Happy to hear suggestions how to squeeze it further though!
u/magna

Amazing!
u/iverjo

Kudos
u/sigveseb

So pretty!
u/tqdwqwd

qwd
u/meesh

Wow!
u/iverjo

#galaxy
u/lionleaf

#space #stars

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wclang

function u(t) {

a=900;c.width=a;for(i=0;i<a;i=i+8){x.beginPath();x.arc(8*t,a/3,i,0,a);x.stroke();x.beginPath();x.moveTo(i,0);x.lineTo(i,a);x.stroke();}

Dec 31 2017 12:44 AM UTC

}// 135/140

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Moire patterns

u/quuxman

nice, remix d/4950

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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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joeytwiddle

remix of d/4827 by u/New_Core

function u(t) {

for(c.width=99,i=9;i--;x.fillRect(40+35*S(t-i),19-14*C(t*i),20,20))x.filter='blur(5px)contrast(1%)',x.globalCompositeOperation="lighter"

Dec 30 2017 1:49 PM UTC

}// 136/140

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Shaded metaballs

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u/joeytwiddle

I was actually trying to threshold but ended up with something unexpected
u/joeytwiddle

Can anyone explain it ... ? lol
u/sigveseb

Sweet metaballs
u/joeytwiddle

blur(0px) helps to show what's going on.
u/joeytwiddle

Something similar but more beautiful: https://www.dwitter.net/d/5321
u/joeytwiddle

Another funny wobbly thing: d/5446
u/joeytwiddle

This is what I had been trying to reproduce: https://codepen.io/aswhipple/pen/xpywbO
u/joeytwiddle

Programmatic metaballs by sop: d/7488
u/iverjo

#metaballs
u/katkip

#cells
u/joeytwiddle

NewCore has done this technique right: d/17584
u/rodrigo.siqueira

#cell

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travisdoesmath

remix of d/4815 by u/travisdoesmath

function u(t) {

for(i=0;i<300;i++){x.fillStyle=R((i)%255,(i)%255,(i+20*t)%255);x.beginPath(),x.arc(960-i/9*S(i+t)*30,540+i/9*C(i+t)*30,i/2,0,6.28);x.fill()}

Dec 30 2017 6:01 AM UTC

}// 140/140

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u/crimbles

Remixed https://www.dwitter.net/d/5358

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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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quuxman

function u(t) {

p=t?p:Array(9e3).fill(0)
for(i=0;i<9e3;x.fillRect(p[i+=2]+=(p[i+1]+=Math.random()-.5)%2e3,p[i+2]%1e3,9,9))
x.fillStyle=R(S(t*5)*120,0,0,.3)

Dec 29 2017 10:45 AM UTC

}// 139/140

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u/Zikoat

i was looking for a way to initialize a variable, good one!
u/quuxman

Yah, stole it from u/Xem or someone
u/joeytwiddle

#virus #outbreak
u/vain

Amazing!

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quuxman

remix of d/4607 by u/quuxman

function u(t) {

x.beginPath()
r=1100
for(i=0;i<355;i+=3.14+C(t/200))x.lineTo(S(i)*r+960,C(i)*r+540)
x.fillStyle=R(c=(S(t)+1)*30,10,c*3)
x.fill('evenodd')

Dec 29 2017 7:36 AM UTC

}// 137/140

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full range of patterns takes ~10.5 minutes

u/iverjo

Impressive tunnel!

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