Hot dweets by u/ximavus

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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ximavus

function u(t) {

localStorage.fill=`c.width=568;for(X=568;X--;)for(Y=320;Y--;x.fillStyle=R(d=Math.random()*255,d,d))x.fillRect(X,Y,1,1)`

Apr 14 2026 8:22 AM UTC

}// 119/140

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fill program (use with d/35229 by typing the command name 'fill' and pressing enter)

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ximavus

function u(t) {

t?onkeydown=k=>{l=k.key;l[1]=='a'?s=s.slice(0,-1):s+=l[1]=='n'?(eval(localStorage[s]),s=''):l[1]?'':l}:s=''
throw s

Apr 14 2026 8:18 AM UTC

}// 115/140

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CMD prompt with programs stored on localStorage

u/cantelope

cool!
u/cantelope

works, if you follow the instructions...
u/ximavus

yeah

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ximavus

function u(t) {

c.width=568
x.translate(282,160)
for(i=1e3;i--;)x.lineTo(S(i+t)*150*C(i%3+t),C(i+t)*150*S(i%3-t))
x.stroke()

Apr 12 2026 11:48 AM UTC

}// 108/140

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3D thingy

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ximavus

function u(t) {

t?onmousemove=e=>{l=e;v.push([e.x,e.y])}:v=[]
c.width=568
for(a of v)x.lineTo(a[0]+=(a[0]-l.x)/99,a[1]+=(a[1]-l.y)/99)
x.stroke()

Mar 23 2026 3:10 PM UTC

}// 129/140

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Zoom drawing

u/Xen

this is sexy! :-O
u/cantelope

oooh neat
u/magna

Trippy

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ximavus

remix of d/35096 by u/dee-gomma

function u(t) {

c.width=240
c.style.filter='invert('
t?onkeydown=e=>{l=e.key;l[1]=='a'?s=s.slice(0,-1):l[1]?0:s+=l}:s=''
x.fillText('C:\\>'+s+'_',0,9)

Mar 23 2026 3:00 PM UTC

}// 134/140

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Uncompressed version of u/dee-gomma's MS-DOS

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ximavus

function u(t) {

t?x.reset():(n=4,i=3)
n-=4/i
i+=2
n+=4/i
i+=2
x.font='2cm a'
x.fillText(n,0,60)

Mar 18 2026 3:31 PM UTC

}// 79/140

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Calculating π

u/cantelope

excellent!
u/Xen

nicely done ;-)
u/ximavus

ty :)

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ximavus

function u(t) {

t?n&1?(n*=3,n++):n/=2:x.fillText(n=~~(Math.random()*99+1),250,40,c.width=568,x.font='1cm a')
n==1?n=0:x.lineTo(t*400,320-n)
x.stroke()

Mar 15 2026 12:18 PM UTC

}// 134/140

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Collatz graph (the n variable is the seed)

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ximavus

function u(t) {

F=(X,Y)=>S(Y*X+t)*360
for(X=96;X--;)for(Y=56;Y--;x.fillStyle=`hsl(${F(X*20,Y*20)} 99%50%)`)x.fillRect(X*20,Y*20,20,20)

Mar 10 2026 6:06 PM UTC

}// 118/140

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sine of multiplication?

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ximavus

function u(t) {

t?x.beginPath(M=500):x.translate(960,540)
x.moveTo(X=S(t)*M,Y=C(t)*M)
x.bezierCurveTo(X,Y,S(t)*M,C(t+M*t)*M,X+99,Y)
x.stroke()

Feb 28 2026 6:18 PM UTC

}// 126/140

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Weird bezier wave circle

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ximavus

function u(t) {

t?onmousemove=e=>P=e:P=0
for(X=96;X--;)for(Y=55;Y--;x.fillStyle=`hsl(${X*Y|(P.x+X)^(P.y+Y)|Y*X} 99%50%`)x.fillRect(X*20,Y*20,20,20)

Feb 20 2026 10:21 PM UTC

}// 131/140

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Multiplication mask

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