Dweets awesomed by u/M1T0

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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hoplite

function u(t) {

i=c.width=96;for(;i--;)for(k=54;k--;)A=t=>(S(i/9+t)*S(k/7)+S(k/9+t)*S(i/7-t))*255,x.fillStyle=R(A(t),A(t+.2),A(t+.4)),x.fillRect(i,k,1,1)

Jan 2 2018 10:57 PM UTC

}// 137/140

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u/Xen

very nice style
u/sigveseb

Quite excellent, very nice
u/joeytwiddle

Lush
u/magna

Wow! Nice!
u/crimbles

That's so nice
u/Chipnstein

Woah... new dosktop background
u/codeslaw

Yes
u/joeytwiddle

#plasma #metaballs #color
u/vain

nice plasma like fx

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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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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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M1T0

function u(t) {

W=c.width/2
H=c.height/2
w=W/2
h=H/2
g=125
x.fillStyle=R(0,g+S(t*1.5)*g,0,1);
x.fillRect(W-w+S(t)*w,H-h+C(t)*h,W,H)

Jan 2 2018 7:17 PM UTC

}// 116/140

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testing as beginner

u/Xen

join chat if you have any questions

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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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Zikoat

function u(t) {

t||(a=Array(s=30).fill(r=s*5));for(i=s;i;x.fillRect(a[i]+=(Math.random()-.5)*s,a[--i],s,s))x.fillStyle=R(...[1,3,5].map(b=>(S(t+b+i)+1)*r))

Jan 2 2018 10:38 AM UTC

}// 139/140

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colorful random walkers

u/tangjurine

nice
u/alfredrasam

THIS IS SO PRETTY I'VE JUST BEEN STARING AT IT FOR THE PAST 10 MINUTES
u/joeytwiddle

#virus #outbreak

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donbright

remix of d/3697 by u/Citiral

function u(t) {

w=1920;for(c.width=i=w;i-=10;)for(j=w;j-=10;){
d=(i*i+S(3.14*(i/w))*j*j)/frame
o=d%9
x.fillRect(i,j,o,o)}

Jan 2 2018 3:15 AM UTC

}// 105/140

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u/joeytwiddle

I was about to comment "donbright would like this one" but then suddenly ... !
u/magna

Wow!
u/Xen

one of my new fav's, love this!

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hoplite

function u(t) {

x.fillRect(0,0,i=w=c.width=2e3,w);x.fillStyle="#fff";for(;i--;)T=t*99,z=w*99/(i-T%1),a=i+T-T%1,x.fillRect(C(a*a)*z+1e3,C(a*w)*z+500,w/i,w/i)

Jan 1 2018 11:14 PM UTC

}// 140/140

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u/eyalcohen4

Starwarsy
u/iverjo

#stars
u/zbstof

Reminds me of Windows 3.11 #screensaver - Starfield

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ellisk1

function u(t) {

x.fillRect(0,0,q=c.width=2e3,q);for(i=q;i--;){r=100+(i/1e2)**4/t;z=6*S(i)+t*i/r;x.fillStyle="#fff";x.fillRect(1e3+C(z)*r,500+S(z)*r,5,5)}

Jan 1 2018 1:04 AM UTC

}// 137/140

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u/lionleaf

Awesome! A rotating black hole?
u/ellisk1

Yep! A black hole was the inspiration!!
u/donbright

awesome, closest thing to blackhole ive seen on here
u/rcdr18

What a great idea! :)

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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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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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E-Mouse

remix of d/4342 by u/retera

function u(t) {

c.width=w=1920
v=t+400
for(q=255;q--;){x.fillStyle=R(q,q,q);x.beginPath();x.arc(w/2+(v-q)*C(v+q),540+S(v-q)*(v-q),40,0,6.283,!1);x.fill()}

Dec 29 2017 9:57 PM UTC

}// 138/140

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