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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katkip

function u(t) {

c.width^=1,x.lineWidth=1;for(r=0;r<336;r++)x.arc(m=960+S(r+t)*200,n=540+C(r+t*2)*200,300,0,7);x.stroke()

Sep 20 2018 3:40 PM UTC

}// 104/140

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Example of recursion in natural spatial shapes (see that smaller second circle in the donut? )

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46uuuu

function u(t) {

c?.remove()
a="Never gonna "
document.body.innerHTML=a+"give you up<br>"+a+"let you down<br>"+a+"delete canvas<br>but... i already did this"

May 20 2026 4:54 PM UTC

}// 140/140

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Never gonna delete canvas

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TheTarquin

function u(t) {

with(Math)p=.2*t%PI*2,g=t*p/Math.random(),r=pow(abs(cos(g)/2)**8+abs(sin(g)/3)**4,-1/1),X=r*cos(p),Y=r*sin(p),x.fillRect(X+960,Y+540,9,9)

Mar 25 2017 9:16 AM UTC

}// 137/140

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Mystical random space donut. Based on the work of @New_Core

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AliYil

remix of d/13552 by u/AliYil

function u(t) {

c.width=1920
for(i=0;i<200;i++)
x.fillRect(i*10,540,10,S(t*(i-(i%2?50:150))/50)*140)

Apr 30 2019 5:15 PM UTC

}// 84/140

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rodrigo.siqueira

remix of d/26101 by u/taupelink

function u(t) {

for(m=300;m--;x.fillRect(m%22*92,j%14*90,j/=2,j))x.fillStyle=`hsla(${(j=m**(m%(.1+S(m*t)**2/2))+152|0)+t*80},${i=m%70}%,${j%i*2}%,${i/j/2})`

Sep 5 2022 10:34 AM UTC

}// 140/140

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Color tiles, color cycle

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xxxhjb

function u(t) {

p=128;c.width=1920;for(i=0;i<30;i++){x.fillStyle=R(p-C(t*2)%p*i*10,p-S(t*i)%p,p-S(t*2)*p);x.fillRect(i*70+S(t+(i))*10,400+S(t+i)*40,50,50)}

Jul 19 2016 9:24 AM UTC

}// 139/140

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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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ciaccodavide

function u(t) {

for(c.width|=i=9;i--;)x.fillRect(400+i*99+T(t*2)*300,400+T(t*2)*100,50,200+T(t*2)*50)

Oct 14 2021 9:58 PM UTC

}// 85/140

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#default slide

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WasifBoomz

function u(t) {

a=Math.floor(Math.random()*900)
b=Math.floor(Math.random()*90)
c=Math.floor(Math.random()*900)
x.strokeStyle=R(b,c,a)
x.strokeRect(5,5,a,c)

Jan 9 2019 12:27 AM UTC

}// 140/140

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u/JWinslow23

Interesting effect! This is a much shorter version, though, for your consideration: X=i=>0|Math.random()*900;x.strokeStyle=R(X()/10,C=X(),A=X());x.strokeRect(5,5,A,C)

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usernameo.O

remix of d/26406 by u/KilledByAPixel

function u(t) {

c.width=1920 // clear the canvas
for(j=0;j<8;j--)
x.scale(23,23)

Oct 27 2022 11:06 AM UTC

}// 64/140

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