Exchanging Centers by Qwitter

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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Qwitter

function u(t) {

x.fillStyle="#9351";x.fillRect(0,0,m=2e3,m);T=5.495;f=1+(t%(2*T)>T)^0;D=640;A=D/(1+(t%T)**3);x.clearRect(f*D+A*C(4*t),540+A*S(4*t),25,25);

Jan 26 2021 3:06 PM UTC

}// 138/140

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Exchanging Centers

u/smtsjhr

FILL then CLEAR instead of CLEAR then FILL! thats so neat! i never thought that and find it kinda *ZEN* in philosophy idk
u/Qwitter

Agreed @smtsjhr, I picked this technique up from post d/6548 by u/41407 and employ it frequently.


      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)

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