Marbled paper effect by rodrigo.siqueira

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

Please log in (or register) to post a dweet (copy-paste the code somewhere safe to save it meanwhile)


    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.

show FPS hide FPS share fullscreen

rodrigo.siqueira

remix of d/35351 by u/rodrigo.siqueira

function u(t) {

for(i=99;i--;f(i,t,900))f=(X,Y,n)=>n--&&(f(1.2+.8*(X*C(Z=1/C(X*X+Y*Y)-6)-Y*S(Z)),X*S(Z)+Y*C(Z),n),x.fillRect(X*500+360,Y*400+550,t<3,.2))

May 15 2026 2:17 PM UTC

}// 137/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Marbled paper effect

u/cantelope

don't get me started about marbled paper! half the stores i go to have it on every isle. I can't throw a rock without hitting some marbled paper. my house is stacked with ream after ream of it. towers of marbled paper from floor to ceiling. My clothes, bedding, wallpaper... you guessed it. all marbled paper. great dweet by the way.


      u(t) is called 60 times per second.
      t: elapsed time in seconds.
      c: A 1920x1080 canvas.
      x: A 2D context for that canvas.
      S: Math.sin
      C: Math.cos
      T: Math.tan
      R: Generates rgba-strings, ex.: R(255, 255, 255, 0.5)

dwitter.net