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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rodrigo.siqueira

remix of d/33714 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(.1)`
for(i=52e3;i--;)r=S(i*i/t)*1.3,Z=C(S(i*50))*13,x.fillRect(960+C(k=i*20+r*r/3)*3e3/Z+r*360,540-S(k)*3e3/Z,.1,t<1)

May 4 2025 3:49 PM UTC

}// 140/140

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Double star connection

u/warbino

awesome!

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katkip

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀪🐱𞱦🐨𬐬𭰬𩐬𬠩🐾𮱸𛡢𩑧𪑮𤁡𭁨𚀩𞱦𫱲𚁩🐵𞱩𛐭𞰩𮀮𨑲𨰨𬐫𠰨𪐪𜐮𝐷𚱲𚐪𩐬𭰫𤰨𪐪𜐮𝐷𚱲𚐪𩐬𜐬𜀬𜐩𞱸𛡦𪑬𫀨𚑽𞱲👔𚁴𛰲𚰮𝰷𚐼𜀿𥀨𭀩𞠭𥀨𭀩𞱦𚀹𝠰𛀵𝀰𛀲𞐰𛁲𚐬𮀮𩡩𫁬𤱴𮑬𩐽𙰣𩡦𩡦𙰬𩠨𞐶𜀬𝐴𜀬𝐰𚡔𚁴𚐬𬠫𛠷𝰩`.replace(/uD./g,'')))

Jun 11 2019 4:08 PM UTC

}// 140/140

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That perfect loop #perfectloop #loop #abstract #minimalist

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S01den

function u(t) {

c.width=960
for(i=k;i<39;i++)x.fillStyle=R(150,t*10%1024,t*S(t)*50%512),x.lineTo(C(d=i**(2+S(t)/132))*250+480,S(d)*250+300)
x.fill()

May 15 2020 12:56 PM UTC

}// 132/140

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rodrigo.siqueira

remix of d/33275 by u/rodrigo.siqueira

function u(t) {

for(N=i=3e4;i--;x.fillRect(960+X*400/Z,540+Y*400/Z,w=Z/9+S(X*7)**(i%5),w*(t<8)))X=S(t*i*i)*32%8,Y=i*N/t/99%9-4,Z=2-1.73/(1+X*X+Y*Y)

Feb 10 2025 2:14 PM UTC

}// 131/140

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Circle / vertical compression

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alice-mx

function u(t) {

for(i=0;i<19;i++) {
x.fillStyle=R(C(t/2)*20+20,i*9,12*(i+4),0.8);
x.fillRect((t*150+i*100)%1920,i*100+S(t+i)*50,100,100)
}

Oct 25 2018 6:04 AM UTC

}// 122/140

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u/katkip

#waves

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dnmc

function u(t) {

Y=(a)=>(a+1)/2
r=(c)=>Math.random()*c
x.fillStyle=R(Y(S(t))*255,r(200),r(200))
x.fillRect(Y(C(t))*1900,Y(S(t*t))*800,50,Y(S(t))*200+40)

Nov 14 2020 5:46 AM UTC

}// 135/140

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jes5199

function u(t) {

g=new Float32Array(1);t*=60;for(b=1080;b;b--){c=(t-960)*3;d=(b-540)*3;v=c*c-d*d;g[0]=v;v-g[0]>0?x.fillRect(t,b,1,1):0}

Mar 9 2017 7:40 AM UTC

}// 118/140

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u/FireFly

This one is cool, it's dependent on aliasing artifacts due to limited float precision, yeah?
u/recursive

Pity "Float32Array" is the only way to convert to single precision. Or is it?
u/recursive

I guess it's not. I've reproduced it without using Float32Array pixel for pixel using mantissa manipulation. https://www.dwitter.net/d/1990
u/donbright

awesome studies of fp

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BriSeven

remix of d/530 by u/BriSeven

function u(t) {

r=Math.random;for(i=0;i<1024;i++)
x.fillStyle=R((d=(t%220*i/64)|0)%256,d/1.4%256,d/7%256),
x.fillRect((r()*1080&i)-(i/2)+1920/2,i*.9,2,2)

Dec 22 2016 4:08 AM UTC

}// 137/140

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u/iverjo

At first I didn't realise it was multicolor. It gets interesting after 20 seconds, when the green color crawls from the bottom, and other colors follow

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f8f82804

remix of d/11798 by u/f8f82804

function u(t) {

throw t?(s=String.fromCharCode(frame)+s):s=''

Jan 14 2019 9:17 PM UTC

}// 45/140

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#unicode #scroller

u/f8f82804

this one could be slightly smaller if you change it from s=...+s to s+=..., but this totally changes the effect

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Salko75

remix of d/25900 by u/Salko75

function u(t) {

c.width*=1
for(j=400;j;j--){a=Math.floor(t*200)+j
for(i=a;i>a-99;i--){i/a==Math.floor(i/a)?x.fillRect(960+S(a)*k*1.5,540+C(a)*j*1.5,9,9):0}}

Aug 1 2022 11:48 AM UTC

}// 140/140

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