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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Odog8

function u(t) {

with(new Proxy([],{has(a,b){throw(atob(b))}}))

cHJveGllcyBhcmUgd2VpcmQg

Dec 14 2022 8:22 PM UTC

}// 72/140

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I didn't know with() let you do stuff like this.

u/danny@hille.dk

cHJveGllcyBhcmUgYXdlc29tZSA6LSk=

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Xor

remix of d/22643 by u/Xor

function u(t) {

c.width=1920;for(i=0;i<12;i++)for(j=0;j<64;j++)k=2**(i+t%1),x.fillRect(k*j*2,k,k,k)

Apr 28 2021 3:27 PM UTC

}// 83/140

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Better Bit Tree

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Xen

remix of d/203 by u/chunnoo

function u(t) {

for(n=i=99;i--;x.fillStyle=R(i*2,t%i,(i*t*t)%255))p=(t*i)%1920,q=S(t-i*6)*i*6+540,x.fillRect(p-n,q,i*i,2),x.clearRect(p-i,q-i,i*3,2)

Oct 27 2017 5:45 PM UTC

}// 132/140

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test for mmastrac ;-)

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francis

remix of d/1080 by u/francis

function u(t) {

c.width=1920; /* clear the canvas */
for(i=0;i<360;i++)
x.fillRect(400+C(i*S(i)-S(t)*300, 400, 50, 200) /* draw 50x200 rects */

Feb 23 2017 9:18 PM UTC

}// 127/140

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Agnes

function u(t) {

q=5*(1+C(t));x.filter=`blur(${q}px)`;for(i=c.width=c.height=100;i--;)for(j=100;j--;)with(x)fillStyle='#'+i*j,fillRect(i-q,j-q,2*q,2*q);;

Feb 28 2018 9:45 PM UTC

}// 136/140

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u/donbright

i really like this one... the way it works is really interesting, variable size "pixels" plus blur
u/Agnes

Wait whoops, I just realised the filter doesn't do anything because I apply it before I reset the canvas in the first for loop. The blurry effect is just from the variable-sized pixels. Interesting?

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New_Core

function u(t) {

for(c.width|=i=a=540;i--;x.fillRect(960+a*S(v=i>>2)*Z,a+a*C(v)*Z,b=Z*50,b))Z=99/((i-t*99)%a+a),x.fillStyle=`hsl(${i},99%,${(a/Z/20)-i%4*9}%`

May 20 2021 6:26 PM UTC

}// 140/140

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u/miratcan

what is $ for?
u/magna

x.fillCube()
u/rep_movsd

${x} surrounded by backticks is ES6 javascript syntax - it puts the value of x in the string
u/Agnes

${} is usually more characters than string concatenation, but if you're doing mathematics in the expression (like "(a/Z/20)-i%4*9" here) you end up needing to surround it with so many parentheses if you're doing string concatenation that template strings are handier.
u/Agnes

${} is usually more characters than string concatenation, but if you're doing mathematics in the expression (like "(a/Z/20)-i%4*9" here) you end up needing to surround it with so many parentheses if you're doing string concatenation that template strings are handier.

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KilledByAPixel

function u(t) {

F=_=>!(Y>4?X%7|Z%7:X&&Y-4)
eval(unescape(escape`󩭯󬬨󨼮󭽩󩍴󪍼󟝩󟜵󜜲󞽩󛜭󞽸󛭦󪝬󫍒󩝣󭌨󞜶󜌭󚍓󚍴󚜪󚍡󟝘󛜴󚜫󠼨󭌩󚬨󨬽󦬭󝌩󚜪󞌰󛌵󝌰󚼨󦜭󝌩󚬸󜌭󚍓󚍴󚜪󨬭󠼨󭌩󚭡󚜪󜼰󛍷󟜴󜌪󡬨󚜬󭼩󚝘󟝩󙜸󛍙󟝩󛼸󙜸󯌰󛍚󟝩󟬾󝬻`.replace(/u../g,'')))

Aug 16 2025 5:42 PM UTC

}// 138/140

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3D Modeling Tool 🪑 Replace F with your own function for XYZ!

Show more comments…
u/KilledByAPixel

Sphere Math.hypot(X-4,Y-4,Z-4)<3+S(t)
u/KilledByAPixel

Lamp Math.hypot(X-4,Z-4)<Y/6+(Y<4)*2
u/KilledByAPixel

Table Y>3?!((X+1)%4-3|(Z+1)%4-3):Y==3&&Math.hypot(X-4,Z-4)<4
u/KilledByAPixel

Sierpiński Pyramid F=_=>!(Y^X^Z)
u/KilledByAPixel

Cube !(X%7)+!(Z%7)+!(Y%7)>1
u/KilledByAPixel

Donut (2.5-Math.hypot(X-4,Y-4))**2+(Z-4)**2<2
u/cantelope

circle (d=Math.hypot(X-4,Y-4))<3.5&&d>2.5&&Z==4
u/KilledByAPixel

Cone Math.hypot(Z-4,X-4)<Y/2+.5
u/KilledByAPixel

Octahedron (A=Math.abs)(X-4)+A(Y-4)+A(Z-4)<4
u/joeytwiddle

Rain S(X**X+(Y-t*9|0)*(Y-t*9|0)+Z^X)>.99 (not very good)
u/joeytwiddle

Falling blobs Math.hypot(X-4,Z-4)**2<4+4*C(Y-t*9)
u/joeytwiddle

Glitch cube !(X%7)+!(Y%7)+!(Z%7)>2+S(7*t+X+Y/2+Z*3)
u/joeytwiddle

Jelly cube !(X%7)+!(Z%7)+!(Y%7)>1&&S(X/2+Y/3+Z/5+t)
u/joeytwiddle

This is very cool. Like tixyland, but 3D, and all inside one dweet! #tixyz
u/joeytwiddle

Hollow sphere pulsing (k=Math.abs(Math.hypot(X-4,Y-4,Z-4)-2+C(t)),k<1&&1-k)
u/joeytwiddle

Hills or waves Math.min(0,6-Y+C(X+t)-S(Z-t*5))
u/joeytwiddle

A fan? (k=Math.atan2(Y-4,Z-4)+t*6,k%2>0&&k%2<.5)
u/ximavus

Thingy: S(t+X+Y+Z)
u/ximavus

Glitchy thingy: T(t+X+Y+Z)

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gpg

function u(t) {

c.width|=0;for(i=300;i--;m=9*3**(-i/50),a=v=>S(i/9+t+v)*99+99,x.fillStyle=R(a(0),a(4),a(8),2+S(t+i)*m),x.fillRect(9*i,540+99*C(t+i)*m,8,8));

Dec 28 2017 4:41 PM UTC

}// 140/140

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magna

function u(t) {

c.width|=0
for(i=17;i--;)for(j=5;j--;)[2057,1,32897,0,2057][j]+87380&1<<i&&x.fillRect(1200-i*50+S(t)*300,400+j*40,50,40)

Jan 3 2024 6:42 AM UTC

}// 120/140

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#default #xmas

u/384.cz

More these please!
u/magna

I'm all about the default

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BackendForth

function u(t) {

for(i=0;i<1920;i+=10)
for(j=0;j<1080;j+=10)
{
d=Math.sqrt(i*+j^2)
x.fillStyle=R(S(d+t*25)*98+129,2,3)
x.fillRect(i,j,10,10)
}

Dec 29 2017 4:07 PM UTC

}// 127/140

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