Random dweets | Dwitter

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: #Food

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katkip

function u(t) {

c.width*=1;for(i=12;i--;)for(j=35;j--;)x.ellipse(960,54+i*i*6,70*i,2*i+j*i/2,0,t,3+t);x.stroke()

Jan 19 2019 6:34 PM UTC

}// 96/140

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Jelly sliced in half #d3 improvisation

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KilledByAPixel

function u(t) {

eval(unescape(escape`𥀽𛑾𥀻𪐽𜐹𚱔𛰹𞑼𜀻𬠽𪐪𚠵𙐲𝀻𩡯𬠨𪰽𝀻𪰭𛐻𮀮𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮰳𚡲𚱩𚠪𝰥𜰶𜁽𘀤𮱩𚠪𝠥𝰰𚰲𜁽𙐤𮱲𚱔𙐹𞐯𝁽𙑠𚑲𚰽𝐫𤰨𪰪𥀯𚀲𞀫𤰨𪐪𚡫𚐪𞐩𚐪𝀻𮀮𩡩𫁬𤡥𨱴𚁩𙐱𞐪𞐹𚰶𞐭𬠬𚁩𛰱𞑼𜀩𚠱𜠰𛑔𙐹𞐪𚀮𞀫𤰨𪐪𚠴𚐯𜰩𛁲𚠲𛀱𚐻`.replace(/u../g,'')))

Oct 12 2019 3:29 AM UTC

}// 140/140

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Vase Collection #MultiDweet

u/chinchang

🤯

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DazeWare

remix of d/34228 by u/KilledByAPixel

function u(t) {

with(x)for(i=99;--i;fillStyle=`hsl(${-i*t} 99%${i}%`)for(j=16;j--;fillRect(-T/2,T*S(i+i*t/T),T=4e3,5))t?rotate(Math.PI/2):translate(t,.35)

Sep 11 2025 2:48 AM UTC

}// 138/140

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Ghoust

function u(t) {

a=b=w=999
for(i=99;i--;b=a){a=Math.random()-.5
s=T(t+i)-t
x.fillStyle=R(d=(a*a+b*b)*w,d,d,.5)
x.fillRect(a*w+w-s/2,b*w+540-s/2,s,s)}

Aug 20 2022 1:20 PM UTC

}// 132/140

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ArthurThuczsec

remix of d/23510 by u/danny@hille.dk

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀽𭰽𜠵𝐬𩀽𮀮𩱥𭁉𫑡𩱥𡁡𭁡𚀰𛁩🐳𛁷𛁷𚐬𬰽𩀮𩁡𭁡𞱦𫱲𚁭👷𚡷𞱭𛐭𞱳𦱩𚰽𝁝👳𦱩𚰳𚡓𚁴𚠳𚑼𜁝🐨𦐪𚁯🐨𝰭𜠪𩐩𛰨𜐫𩐩𚐪𭰫𭀪𝀪𭰦𝠴𧡘𚡯𚡷𙠶𝀩𚡷𚑥🐨𦀽𜠭𜰪𫐯𭰯𭰩𚡘𚰨𦐽𛐲𚰴𚠨𫐥𭰩𛱷𚐪𦐻𮀮𬁵𭁉𫑡𩱥𡁡𭁡𚁤𛀰𛀰𚐻`.replace(/u../g,'')))

Aug 8 2021 11:50 AM UTC

}// 139/140

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Agnes

function u(t) {

(A=t?A.filter(e=>e.r>1):[]).push({a:t**3,r:2e3})
A.map(e=>x.fillStyle=`#${e.a|x.fillRect(960+S(e.a+=.01)*(e.r*=.99),540+e.r*C(e.a),5,5)}`)

Apr 9 2024 11:28 AM UTC

}// 138/140

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Sluuurp (it keeps going after it stops for a bit)

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Ocramoi

function u(t) {

c.width^=1
x.font="3in'"
var a=1
for(a;a<18;a++)x.fillText('-', 100*a*Math.abs(S(t)), 600)
x.fillText('⚫', -200+100*a*Math.abs(S(t)), 640)

Dec 18 2018 3:12 AM UTC

}// 138/140

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Just my first dweet playing with the sin function

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KilledByAPixel

remix of d/14539 by u/KilledByAPixel

function u(t) {

with(x)for(c.width|=i=99,font='50em"';i--;fillText('🕺💃 ',99+49*S(i/9+t*3)*S(i/9+4),850))beginPath(save(restore())),clip(rect(0,20*i,2e3,20))

Apr 6 2020 10:51 PM UTC

}// 140/140

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Wavy #Dancing

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KilledByAPixel

function u(t) {

for(x.fillStyle=R(T=Math.random(x.fillRect(0,0,z=i=2e3,z))<.995?T-9:300,T,T>9?T:30,.1);i--;x.clearRect(S(i*i)*z+Y/9,Y,i%3,-20))Y=(z+i)/2*t%z

Sep 7 2020 4:35 PM UTC

}// 140/140

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Thunder #Storm ⛈️

u/taupelink

nice!
u/taupelink

more than "nice"...this is fantastic
u/KilledByAPixel

thank you, still working on lighting ;)
u/katkip

waa
u/Xen

nicely done

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donbright

remix of d/1857 by u/donbright

function u(t) {

w=128,c.width=2*w;for(i=w;i--;)for(j=w;j--;)c=S(t/3)*i*i+S(t/4)*j*j+S(t/5)*2*i*j,c=(c%w+w)%w,x.fillStyle=R(c,c,c),x.fillRect(64+i,8+j,1,1)

Mar 4 2017 8:07 AM UTC

}// 139/140

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As with 1857 this is an attempt to show the relation between Binary Quadratic Forms and the Circles and Squares pseudo fractal and Moiré pattern. This takes the basic ingredients of the Quadratic Form, x*x, y*y, and 2*x*y, and mixes them together, but slowly varies the amount of each ingredient over time with the Sine function. It is possible to see how all variations of the Quadratic Form result in similar patterns, transitioning from crcles to ovals to hyperbola patterns. Inspiration from this site and NJ Wildberger's rational geometr, Paul Bourke's http://paulbourke.net/fractals/circlesquares/ and Santiago Zubeta

u/donbright

https://twitter.com/zubie7a
u/SpecialAgent

wow! fascinating and purty :)