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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alien

remix of d/2836 by u/alien

function u(t) {

w=c.width=180
f=frame
for(j=0;j<w;j++)
for(i=0;i<w;i++){
q=(i*i+j*j)**2+f&20
s=i*C(q)
s%=255
x.fillStyle=R(s,s*2,s)
x.fillRect(i,j,1,1)
}

Jul 7 2017 7:27 PM UTC

}// 140/140

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Pascal

function u(t) {

f=(X,Y,n=80)=>X*X+Y*Y<n?f(X*X-Y*Y-.8,2*X*Y-.2,--n):n/80
for(X=1920;X--;)x.fillRect(1920-X,Y=t*60,a=1-f(X/600-1.6,Y/600-.9)**2,a)

Jan 23 2021 9:03 PM UTC

}// 128/140

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#julia #fractal for c = -0.8 - 0.2i

u/Qwitter

Cool.

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Xen

remix of d/29720 by u/duckyluuk

function u(t) {

r=Math.random
with(x)for(n=a=b=567,c=d=0;n-=9;fill(stroke()))arc(a+=c+=r(beginPath())-.5,b+=d+=r(fillStyle=`hsl(${t*99} 99%33%`)-.5,n/8,0,t)

Apr 3 2024 8:11 PM UTC

}// 140/140

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quick play

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danny@hille.dk

function u(t) {

eval(unescape(escape`󭍼󯌨󢜽󫭥󭼠󢝭󨝧󩝄󨝴󨜨󨼮󭽩󩍴󪌽󭼽󜬵󝜬󪌽󜜶󜌩󚜻󩭯󬬨󪜽󭼪󪌻󪜭󛜻󢜮󩍡󭍡󛭳󩝴󚍛󛌬󚍰󚽴󚭷󙭷󧭷󚭡󚬱󛬶󚽷󛝴󚭷󙭷󚜭󬌯󞜬󭽝󛍩󚬴󚜩󨜽󣝡󭍨󛭡󭍡󫬲󚍘󟜭󛬵󚼱󚬨󪜥󭼩󛽷󛍙󟜭󛬴󚼲󚭩󛼱󩜵󚜬󬌽󭼯󚍙󚭙󚽘󚭘󚜪󚬮󝜪󛬵󞽸󛭰󭝴󢝭󨝧󩝄󨝴󨜨󢜬󜌬󜌩`.replace(/u../g,'')))

Aug 19 2021 9:08 PM UTC

}// 140/140

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Second attempt at an old school tunnel effect

Show more comments…
u/danny@hille.dk

Uncompressed code: t||(I=new ImageData(c.width=w=255,h=160));for(i=w*h;i--;I.data.set([,,(p+t*w&w^w*a*1.6+w-t*w&w)-p/9,w],i*4))a=Math.atan2(X=-.5+1*(i%w)/w,Y=-.4+2*i/1e5),p=w/(Y*Y+X*X)**.5*.5;x.putImageData(I,0,0)
u/danny@hille.dk

#tunnel
u/danny@hille.dk

first attempt: d/23462
u/danny@hille.dk

Javascript garbage collector is struggling, when you create a new ImageData at each run, which results in some nasty stuttering. t||(I=new ImageData... fixes this issue
u/magna

This worked for me: I=x.getImageData(0,0,c.width=w=255,h=160) (no need for t|| check)
u/danny@hille.dk

u/magna while getImageData does not hit the garbage collector quite as hard, it takes about 1.3 times longer to execute, wich amounts to 53 fps, while t||(I=new ImageData... runs at a constant 60 fps (on my old 2014 macbook pro :-))

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mathmania

function u(t) {

c.width=1920;for(i=0;i<9;i++)
{x.fillRect(400+i*100,400+100*T(t+(Math.PI-i)),50,200)}

Jul 29 2016 3:46 PM UTC

}// 85/140

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u/iverjo

Simple yet pleasing
u/taupelink

#default

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Purpzie

function u(t) {

x.font='75px"',x.fillText(u+'',100,100)

Sep 26 2018 11:58 PM UTC

}// 39/140

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shortest #quine i can manage

u/joeytwiddle

Could change scale instead of font: x.scale(9,9),x.fillText(u+'',9,9)
u/Purpzie

@joeytwiddle you're right hmmmm

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jomag

function u(t) {

c.width=1920;
x.font='400px x';
t*=3;w=3040;
p=t*500%w;p=p>w/2?w-p:p;
x.strokeText('⚽️',p, 1050 - S(t*3%3.14159)*400);

Feb 7 2018 9:06 AM UTC

}// 118/140

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cantelope

remix of d/11465 by u/pavel

function u(t) {

eval(unescape(escape`睩瑨⡸⥦潲⡦楬汒散琨〬〬挮睩摴桼㵩㴵ⰲ攳⤬獣慬攨㤬㤩ⱱ㵃⠵⩴⤻椭ⴻ晩汬⡳瑲潫攨⤩⥳瑲潫敓瑹汥㵦楬汓瑹汥㵠⍦〸怬浯癥呯⡘㴷㈫ㄷ⩩ⰰ⤬慲挨堭㘵⩓⡡㴨焾〿椺椭㐩㽱⼵〺焩ⰶ㔪䌨愩ⰸⱡⴱ⸵㜬㜩`.replace(/u(..)/g,"$1%")))

Dec 20 2018 7:24 PM UTC

}// 139/140

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u/katkip

More #physics?

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Irratix

remix of d/15964 by u/Irratix

function u(t) {

(D=(n,m,o,p,q)=>{f=99*q;x.fillStyle=R(f);x.fillRect(n,m,o,p);q&&D(n+o/4,m,o/=2,p/=2,--q)+D(n+o,m+p,o,p,q)+D(n,m+p,o,p,q)})(0,0,1920,1080,8)

May 27 2020 2:45 PM UTC

}// 139/140

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made it a bit prettier. also redder.

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sandromiccoli

function u(t) {

x.font=180+'px A'
x.save()
x.translate(960,540)
x.fillText(t%40<20?'👌🏼':'😎',t<10?0:(-1+(Math.random()*2))*960,700-t*20)
x.restore()

Jan 10 2018 3:07 PM UTC

}// 131/140

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u/Xen

hehehe 👌
u/diceroll123

👌👀👌👀👌👀👌👀👌👀 neato stuff neat౦ stuff👌 thats ✔ some neato👌👌stuff right👌👌there👌👌👌 right✔there ✔✔if i do ƽaү so my self 💯 i say so 💯 thats what im talking about right there right there (chorus: ʳᶦᵍʰᵗ ᵗʰᵉʳᵉ) mMMMMᎷМ💯 👌👌 👌НO0ОଠOOOOOОଠଠOoooᵒᵒᵒᵒᵒᵒᵒᵒᵒ👌 👌👌 👌 💯 👌 👀 👀 👀 👌👌neato stuff