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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rodrigo.siqueira

remix of d/28737 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(a=b=t,i=8e4;i--;b+=C(a*4)-b/9,a+=(i/a&i%2)*4+b*S(a/2)/3-a*a/5-a*b/19)x.fillRect(a*7e3-1900,b*530+300,.1,t<3)

Oct 23 2023 2:54 PM UTC

}// 137/140

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Dense spiral

u/donbright

legendary

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pavel

function u(t) {

t?c.width|=0:(i=A=240,j=B=80,p=q=-9)
x[f='fillRect'](i+=p=i<7*A?p:-p,840,A,A)
x[f](j+=q=j>0?q:-q,1e3,B,B)
j>i-B&&(j=i-B,p+=s=(q-p)/5,q-=s*9)

Jan 24 2019 10:56 PM UTC

}// 140/140

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Perfect elastic collision #physics #simulation

Show more comments…
u/pavel

Big block is 9x the weight of the little block
u/katkip

This is impressive. Idea from 3blue1brown?
u/iverjo

Wow!
u/bekfast2390

This is like ping-pong!
u/joeytwiddle

Some context: https://www.youtube.com/watch?v=HEfHFsfGXjs 3Blue1Brown
u/katkip

hi, PI
u/Undefined

A fellow 3b1b fan, I see :D
u/joeytwiddle

#3b1b
u/ivylab

I always wait until the big one gets way up to the left side and it goes bam bam bam bam bam :)

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rodrigo.siqueira

remix of d/20812 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,c.width|=f=g=>i*S(i/999-t)*g(i*i);i--;x.fillRect(960+f(S),540+f(C),5,5))x.fillStyle=`hsl(${i/6},80%,50%`,c.style='filter:invert('

Dec 31 2020 9:46 PM UTC

}// 139/140

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Color explosion

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Jezza

remix of d/13451 by u/rodrigo.siqueira

function u(t) {

t||x.translate(j=960,540);if(t<8){
x.globalAlpha=.1
x.fillRect(i=50,i,j,i)
x.fillStyle=R(99,t*i)
x.rotate(2.513274)
x.drawImage(c,i,i,j,j)
}

Apr 26 2019 3:19 AM UTC

}// 140/140

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A bit of colour!

u/joeytwiddle

#organic

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rodrigo.siqueira

function u(t) {

for(i=470;i--;c.style.filter=`invert(`)
f=t/3%6.28,
X=S(f-4)*i,
Y=C(f-4)*i,
x.fillRect(960+X,540+Y,1,1),
x.fillStyle=R(k=f*45+S(X*Y)*99,k,k)

Feb 14 2022 1:04 AM UTC

}// 140/140

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Noise over the gradient circle. Based on the cover art of the book "Imaginários Tecnocientíficos" (design by Carol Ohashi). Moiré patterns can be seen in the first circle. Wait for the second round to complete.

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lionleaf

remix of d/422 by u/lionleaf

function u(t) {

c.width=2e3;x.font='79px Arial';v='Share dweets with permalinks!';for(i=v.length;i--;)x.fillText(v[i],i*69+S(t+i)*9,540+S(t*9+i)*20)

Aug 19 2016 3:11 AM UTC

}// 132/140

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First version of permalinks in place! Please test it :) More work to be put into making it easier to discover the rest of dwitter from a permalink.

u/lionleaf

#feature

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rodrigo.siqueira

remix of d/27032 by u/taupelink

function u(t) {

for(i=1e4;i--;x.fillRect(t*5*X+960,32*Y,K=3/t,K))Y=i/270-t,X=T(Y*i)*t*9,g=Y&24+X%8,h=X&++g,(z=(X/g%(a=8-Y/++h)-a+h)&3),x.fillStyle=R(70*z+h)

Feb 13 2023 2:38 PM UTC

}// 140/140

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Red spine

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pavel

remix of d/11018 by u/pavel

function u(t) {

t?c.width=innerWidth:a=b=X=Y=0
onmousemove=e=>(X=e.x,Y=e.y)
x.moveTo(a+=C(d=Math.atan2(Y-b,X-a)),b+=S(d))
x.arc(a,b,20,d+t%1,d-t%1)
x.fill()

Nov 21 2018 5:11 AM UTC

}// 140/140

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Pacman is hungry #interactive

u/pavel

#pacman

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ximavus

function u(t) {

t?_='Backspace':$=''
onkeydown=k=>{l=k.key;if(l.length<2|l==_){l==_?$=$.slice(0,-1):$+=k.key}l=='Enter'?(eval($),$=''):0}
throw $

Dec 11 2025 6:43 PM UTC

}// 129/140

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Dwitter-CMD! (click on the canvas, write dwitter code and press enter)

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yokljo

function u(t) {

c.width*=1;s=170;n=12;d=Math.PI/n*2;for(i=n;i--;x.fillRect(S(i*d)*s+960,C(i*d)*s+540,o=S(i/2-t*n)*n+n,o));

Aug 25 2017 11:21 PM UTC

}// 106/140

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u/magna

Added this as a dweet player loader :)