Explode by sanco

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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sanco

function u(t) {

c.width=640;for (i = 0; i < 1e2; i++)for (z = 0; z < 1e2;z++)x.fillRect(z*t+S(t)*10,i*t+C(t),2*S(i),5*S(z))/x.rotate(7 * Math.PI / 180);

Feb 28 2022 3:07 PM UTC

}// 136/140

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Explode

Show more comments…
u/danny@hille.dk

Nice! and Welcome to Dwitter :-)
u/danny@hille.dk

suggestion: 7 * Math.PI / 180 can be written as an approximation const: .12 without any significant loss
u/danny@hille.dk

also whenever the order of execution isn't important you can shorten for loops like this: for(i=100;i--;); becaus 0 is falsy, so when i reaches 0 the loop exits
u/danny@hille.dk

you an free up space, so you can center the Explotion like this: c.width=640,x.translate(320,180);for(i=99;i--;)for(z=99;z--;x.rotate(.12))x.fillRect(z*t+S(t)*10,i*t+C(t),2*S(i),5*S(z))
u/danny@hille.dk

this example adds some additional golfhing tricks: 99 is almost 100 :-), use the free slot in the for loop to execute code, you would otherwise execute inside the for loop
u/sanco

Thanks a lot danny! I'm new on this so really appreciate the comments.


      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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