Top dweets of all time

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: #Food

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pavel

remix of d/12336 by u/pavel

function u(t) {

for(i=t?w=600:a=b=0;i--;x.fillRect(w*b,w-w*a,1,1))[a,b]=[[3.4*a+b/6,a-b,b-a,0][q=Math.random()**t*4|0]/4,[3.4*b-a/6+2,a+b+1,a+b+.5,b][q]/4]

Apr 17 2020 11:24 PM UTC

}// 139/140

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Barnsley #fern #fractal #leaf #uncompressed

u/pavel

This version is also #improved with a #grow effect and a cap on how dark the image gets if you leave it for a while.
u/Xen

nice!

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veubeke

function u(t) {

x.globalCompositeOperation='hue'
for(i=t<4&&255;i--;x.fill(x.arc(_=i*199%1920,_*_%1080,t*50,0,7)))x.beginPath(x.fillStyle=R(1+i))

Apr 7 2020 12:02 PM UTC

}// 129/140

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#voronoi diagram

u/veubeke

Blatantly stolen from u/p01 https://twitter.com/p01/status/1246523062696…
u/veubeke

PS: I deleted an older version because of performance issues
u/katkip

WOW!

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pavel

function u(t) {

for(c.width=i=640;i--;i&25&&x.beginPath(x.stroke()))X=i+t%1*32-320,r=i&1||-1,z=.8+r/9*S(a=X/69*S(t)),x.arc(320+X/z,180+36*r*C(a)/z,5/z,0,7)

Apr 5 2020 11:21 PM UTC

}// 139/140

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#dna coil

u/katkip

Smooth
u/sigveseb

Warping train tracks

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tomxor

remix of d/17768 by u/tomxor

function u(t) {

eval(unescape(escape`𫠽𭀿𫠮𫑡𬀨𚁛𦀬𦐬𠐬𠡝𚐽🠨𮀮𨡥𩱩𫡐𨑴𪀨𮀮𫑯𭡥𥁯𚁘𛁙𚐬𮀮𫁩𫡥𥁯𚁘𚰽𠐬𦐫👂𚐬𮀮𫁩𫡥𥱩𩁴𪀽𚁁𚡂𚐪𚠮𝐬𮀮𬱴𬡯𪱥𚀩𚐬𦱘𛁙𛁁𚠮𝰫𚁃𛑘𚐯𞐬𠠪𛠷𚰨𤰭𦐩𛰹𧐩𚐺𦱝𞱯𫡭𫱵𬱥𫑯𭡥🐨𮱸𛁹𯐩🐾𫡛𭀪𝠰𙠶𜱝👛𠰽𮀪𜰮𝀬𤰽𮐪𜰮𝀬𜀬𜁝`.replace(/u../g,'')))

Feb 27 2020 6:50 PM UTC

}// 140/140

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#interactive #calligraphy #paint #brush #particles

u/tomxor

The brush pressure is derived from velocity and direction (so more caligraphic)
u/BriSeven

I love how it feels simultaneously precise and digital and messy analogue.
u/tomxor

Thanks :) The dynamics can be easily tweaked too, A*.7 and B*.7 are the inertia (could interpret as how articulated the brush is) and (C-X)/9 and (S-Y)/9 are distance based attraction to pointer (could interpret as bristle length maybe?)
u/katkip

Awesome!
u/magna

WOW!

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magna

remix of d/17584 by u/New_Core

function u(t) {

c.width|=0
c.style.filter=`blur(${(S(t)+1)*8}px)contrast(2e3%`
for(i=9;i--;)x.fillRect(400+(i+S(t*i))*100+S(t)*300,400,50,200)

Feb 14 2020 3:43 PM UTC

}// 126/140

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#default #metaballs #glitch

u/Xen

nice!
u/katkip

omg!
u/Qwitter

... Dwitter

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rodrigo.siqueira

remix of d/17426 by u/rodrigo.siqueira

function u(t) {

for(i=880;i--;x.fillStyle=R(Y/2.5-r/(350+S(t*2)*300),0,r/2000,.8))x.fillRect(X=S(r=i*i)*i*3+i*C(t*3)+900,Y=C(r)*i+390+S(t*2)*i/3,i,i)

Jan 31 2020 6:05 PM UTC

}// 133/140

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Underwater lava cave #perspective

Show more comments…
u/tomxor

I keep switching perception between cave and mountain top, it gets stuck on mountain top... i can't control it 😳
u/sigveseb

I don't see mountain top 🤔 how?!
u/tomxor

funny, i can't see anything else now... it;s like looking down from above a mountain peak. Maybe imagine you are looking down from a circling helicopter.
u/rodrigo.siqueira

This #illusion is called "bistable perception". When I posted it was looking like a cave, now it seems to keep changing between mountain top and cave. I prefer a cave.
u/sigveseb

yes, I see it now!
u/rodrigo.siqueira

#tunnel
u/joeytwiddle

To see the mountaintop, maybe look at the blue and imagine it is the floor or the sea, far away.

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pavel

function u(t) {

with(x){for(i=c.width|=0,q=1-t%2,fillStyle='#09f',scale(5,5);a=--i>>5;rect(180+24*(a*q-9*q+b),24*(a-b*q)-119,22,22))b=i%32-9;fill(stroke())}

Jan 25 2020 8:17 PM UTC

}// 140/140

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Windmill #tiling

u/pavel

Inspired by the Mathologer video https://www.youtube.com/watch?v=DjI1NICfjOk

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pavel

function u(t) {

X=450
c.width|=f=(r,a,o)=>r>9?f(r/=2,a-o,-o)+f(r,a,o)+f(r,a+o,-o):(t-=.02)>0&&x.lineTo(X+=r*C(a*=355/339),Y+=r*S(a))
f(Y=1e3,0,1)
x.stroke()

Jan 17 2020 3:27 AM UTC

}// 140/140

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One stroke #sierpinski

u/tylertoomey

Wow, this is phenomenal!
u/katkip

#curve #sfcurve

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New_Core

function u(t) {

for(i=99;i--;)d=~~(t/1.53)%2*199,x.fillStyle=R(a=Math.random()*25+99-d/3+49*S(d?3:t*4),a,a),x.fillRect(t*60*7,400+i*7+d+~~(t*9)%2*50,7,7)

Jan 11 2020 11:15 AM UTC

}// 137/140

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#castle

u/Xen

nice
u/13thptr

amazing
u/katkip

nice!

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KilledByAPixel

remix of d/17010 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𭀿𨰮𭱩𩁴𪁼🐰𞡡👛𧐊𩡯𬠨𮀮𬱣𨑬𩐨𞐬𞐩𛁩🐴𞀻𪐭𛐻𨑛𪑝🰨𮀮𫑯𭡥𥁯𚁘🐨𪐥𞀩𚠲𝠫𜐵𛁙🐨𪐾🠳𚐪𜠰𚰴𚐬𮀮𨑲𨰨𦀬𦐬𜐳𛁱🐱𛠵𝰫𤰨𨑛𪑝𚱴𚠴𚐬𬐩𚐺𨑛𪑝👩𚡩𚑦𫱲𚁪🐴𞀻𭀦𙡪𛐭𞰩𨑛𪑝𚰽𤰨𨑛𪡝𛑡𦱩𧐩𛰱𩐴𒡸𛡳𭁲𫱫𩐨𚐻`.replace(/u../g,'')))

Dec 31 2019 12:50 AM UTC

}// 135/140

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Pendulum Synch - Kuramoto Model

u/Qwerasd

This is really cool.
u/katkip

#math is awesome
u/iverjo

Explanation?
u/rodrigo.siqueira

The Kuramoto Model describes how small interactions between oscillators can lead to synchronization between them. E.g. flashing of fireflies, group of metronomes, neural network of spiking neurons can sync after a period. Oscillatory neural networks are a promising field for future research in both natural and Artificial Intelligence
u/lionleaf

Here's a recent youtube movie that's relevant, and perhaps an inspiration: https://www.youtube.com/watch?v=J4PO7NbdKXg #pendulum