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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function u(t) {

c.width|=0
for(i=0;i<64;i++)for(j=0;j<16;j++)for(k=0;k<16;k++)x.strokeRect(960+i*9*C(t*k/9),540+j*9*S(i*t/9)+k*32*C(t*j/99),S(t*i)*9,C(t)*9)

Sep 25 2021 9:52 PM UTC

}// 140/140

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DeathBoy

function u(t) {

c.width=1920
n=19
for(i=0;i<n;i++)
{
Y=C(t*3+(i+n)%n)
x.fillStyle=R(Y*250)
x.fillRect(0+i*100,550+S(t*3+i)*300,100,Y*120)
}

Mar 14 2019 11:56 AM UTC

}// 123/140

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u/Undefined

c.width|=0;for(i=n=19;i--;)Y=C(t*3+(i+n)%n),x.fillStyle=R(Y*250),x.fillRect(0+i*99,540+S(t*3+i)*300,99,Y*120) - Golf your code, 110
u/Undefined

108 if you remove the unnecessary 0+
u/Xen

for(c.width|=i=n=98;i--;x.fillRect(i*n,540+S(t*3+i)*300,n,Y*n))x.fillStyle=R((Y=C(t*3+i+n%n))*250) 98bytes with tiny tweak

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NeonStrawberry

function u(t) {

c.width+=0;for(i=0;i<510;i++){a=2-((t+i/256)%2);x.fillRect(960+C(t+i)*800*a,540+S(t+i)*400*a,30*a,30*a)}

Jul 3 2023 1:26 PM UTC

}// 104/140

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The Vortex

u/tomxor

Welcome!
u/redactedhoptional

Nice, this is making me dizzy :P
u/jkeks

how to embed it to my site ?
u/rodrigo.siqueira

u/jkeks to embed in your site, click "share" and see the "embed" code.

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rodrigo.siqueira

remix of d/18760 by u/rodrigo.siqueira

function u(t) {

for(let i=2e3,f=(X,Y,n=12)=>Y?f(X*X-Y*Y-.9,2*Y*X-Y*Y,n-.2):x.fillStyle=`hsl(${n*4},99%,${n**2}%`;i--;x.fillRect(i,t*60,1,9))f(i/500-2,1-t/9)

May 14 2020 4:02 PM UTC

}// 140/140

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MandelJulia - #Julia set with #Mandelbrot patterns #fractal

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BackendForth

function u(t) {

v=Math.random
for(i=4999;i--;)x.fillRect(1920*v(),1080*v(),9,9)
a=1080*v()
if(v()<.04)for(i=1080;i--;){x.clearRect(a,i,9,9)
a+=(v()-.5)*9}

Feb 28 2021 3:59 PM UTC

}// 138/140

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#lightning

u/magna

Great technique!

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ellisk1

function u(t) {

c.width|=0;a=255;x.ellipse(1e3,600,a,a,.2,3,6);for(i=9;i--;){d=i*50;x.fillStyle=R(a,3*a/i,0);x.fill();x.fillRect(1e3-d/2+9*S(t),1e3-d,d,40)}

Dec 28 2017 5:48 PM UTC

}// 140/140

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JeremyLikness

function u(t) {

for(c.width=b=1920;b-=5;){x.fillRect(b,(z=S((b*(t/2))/64)*300+b*.3+300),10,($=S((b*t)/128)*40));x.fillRect(1920-b,z,10,$);}

Dec 28 2017 9:56 PM UTC

}// 123/140

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BriSeven

remix of d/17807 by u/BriSeven

function u(t) {

eval(unescape(escape`瑼簨愽䅲牡礨㕥㐩⹦楬氨㘮㌩⤬砮獴牯步却祬攽恨獬⠤笹㤪瑽‹㤥㔰╠ⱸ⹳瑲潫攨湥眠偡瑨㉄⡠䴹․笹㤪瑽池⭡⹭慰⡡㴾䌨愩⬢•⭓⡡⤩⤩ⱡ㵡⹭慰⠨愬攩㴾愫匨琪攪愩⼹⤻`.replace(/u([^D].)/g,'$1%')))

Apr 28 2025 6:33 AM UTC

}// 127/140

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Topological Mutation

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DonKarlssonSan

remix of d/6037 by u/DonKarlssonSan

function u(t) {

E=(n,i,a)=>n<=i?i:n>=a?a:n
r=p=>Math.random()*80-40
if(!window.X)X=960,Y=540
x.lineTo(X=E(X+r(),0,1920),Y=E(Y+r(),0,1080))
x.stroke()

Jan 14 2018 8:01 PM UTC

}// 133/140

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Constrained Random Walker

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sigveseb

remix of d/5540 by u/veubeke

function u(t) {

M=576
for(i=M*2;i--;x.fillRect(i/24<<5,i%24<<5,32,32,x.fillStyle=r<0|r>=1?'red':R(_=r*256,_,_)))r=i>=M?
Math.random():
(t+i)**4%1

Jan 4 2018 11:51 PM UTC

}// 129/140

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Veubeke's random challege

u/magna

Looks random to my human eyes
u/iverjo

Seamless!
u/sigveseb

#random