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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384.cz

function u(t) {

t||x.scale(9,9);t?eval(O+=";x.fil(new Path2D'M410-879356zm)"[localStorage.CAT.charCodeAt(I/2)>>I++%2*5&31]):I=O=""

Feb 10 2024 9:51 AM UTC

}// 114/140

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Cat #waitforit

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u/384.cz

Click on d/29480 to load the path data
u/cantelope

TypeError: Cannot read properties of undefined (reading 'charCodeAt')
u/384.cz

wait 30 seconds, cantelope
u/384.cz

wait 30 seconds, cantelope
u/384.cz

wait 30 seconds, cantelope
u/384.cz

wait 30 seconds, cantelope
u/384.cz

wait 30 seconds, cantelope
u/384.cz

wait 30 seconds, cantelope
u/384.cz

wait 30 seconds, cantelope
u/384.cz

wait 30 seconds, cantelope
u/384.cz

wait 30 seconds, cantelope
u/384.cz

wait 30 seconds, cantelope
u/384.cz

wait 30 seconds, cantelope
u/384.cz

wait 30 seconds, cantelope
u/384.cz

wait 30 seconds, cantelope
u/384.cz

wait 30 seconds, cantelope

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BackendForth

function u(t) {

c.width=1920
r=960
if(!t)for(a=Array(i=r);i--;)a[i]=1.1**i%1-.5
for(i=r-3;i-=3;)z=a[i+2]+2,x.fillRect((a[i]-S(t))/z*r+r,a[i+1]/z*r+540,9,9)

Jan 10 2018 2:47 AM UTC

}// 140/140

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trupples

function u(t) {

c.width=99
t%=4
r=Math.max(0,9*Math.log(t-1))||0
for(i=99;i--;x.fillRect(30+r*(T(i*7)%2)+t*10,50-Math.max(0,t*(3-t/2))*9+r*(T(i*3)%2),1,1));

Aug 24 2018 9:10 PM UTC

}// 140/140

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fireworks :D

u/katkip

#fireworks

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sandromiccoli

function u(t) {

x.beginPath();x.strokeStyle=R(0,0,0,0.1);x.arc(960+S(t/10)*960,490,0.2*t*((C(t)+1)/2*9),(C(t/9)+1)*Math.PI,Math.PI*(S(t/4.5)+1));x.stroke();

Jan 4 2018 12:34 PM UTC

}// 140/140

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BackendForth

function u(t) {

if(!t)a=Array(256).fill(0)
for(i=0;i<256;i++){
a[i]+=8*Math.random()-4
x.fillStyle=R(i,0,0)
x.fillRect(t*200%1920,a[i]+300*S(t)+540,9,9)}

Jan 10 2018 3:22 AM UTC

}// 137/140

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afs

function u(t) {

with(x)for(c.width|=i=40,translate(960,540);i--;)q=Math.PI/20,beginPath(fill(arc(C(t+i*q)*500,S(t+i)*400,8,0,6)))

Oct 16 2019 8:50 PM UTC

}// 113/140

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Qwitter

function u(t) {

l=2e3;m=210;for(k=4e3;k--;){i=k%18-9;q=k*t%l;w=q-l/2;f=C(t)*l-(1e5*i+w*w)**.5;x.fillStyle=R(m*T(t),m+45*C(k),m+i*5);x.fillRect(q,f,20,20);}

Jan 18 2018 7:15 PM UTC

}// 139/140

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u/joeytwiddle

Patterns and colours

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ElisionFR

function u(t) {

c.width=c.clientWidth
c.height=c.clientHeight
c.a=c.a?c.a:[0,0]
c.onmousemove=e=>c.a=[e.pageX,e.pageY]
x.fillRect(c.a[0]-25,c.a[1]-25,50,50)

Feb 23 2020 12:42 PM UTC

}// 140/140

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Getting mouse position. Can someone make it in less characters ?

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u/tomxor

c.onmousemove=e=>{c.x=e.x,c.y=e.y};x.fillRect(c.x-25,c.y-25,50,50)
u/tomxor

Even smaller: c.onmousemove=e=>R=e x.fillRect(R.x-25,R.y-25,50,50) R can be any existing object of course
u/tomxor

Oh also can define global mousemove event rather than on c: onmousemove=e=>R=e;x.fillRect(R.x-25,R.y-25,50,50) pretty sure that's as far as it goes, -44 chars
u/tomxor

If you are happy without full screen you could also ommit the width/height and multiply by an appropriate constant: c.width|=onmousemove=e=>R=e;x.fillRect(R.x*3.4-25,R.y*3.4-25,50,50) that's -73, now you have some space to do something.
u/tomxor

hah, i did this before but forgot: https://www.dwitter.net/d/12717
u/tomxor

#mouse
u/ElisionFR

Nice ! Thanks !

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houmei

function u(t) {

c.width=1280 // clear the canvas
for(i=0;i<50;i++)
x.fillRect(400+S((t+i)*2)*400,300+S((t+i)*3)*300,10,10)

Jan 25 2018 12:59 PM UTC

}// 106/140

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KilledByAPixel

function u(t) {

f=(s,w)=>(m=(S(i*s/1e3)*199+99)*t%w,m>w/2?w-m:m)
for(i=1e3;--i;)x.fillStyle=`hsla(${i},99%,${f(4,99)}%)`,x.fillRect(f(2,3831),f(5,2151),9,9)

Apr 15 2019 4:24 AM UTC

}// 140/140

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1000 squares #bounce for you.

u/Xen

it gets better the longer you leave it ;)
u/KilledByAPixel

It does descend into chaos eventually but it takes a while.