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function u(t) {
} //
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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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function u(t) {

}//
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  • Hello guys. I need ideas on how can i optimize this thingie :)
  • u/lowpoly
    and yea, the k*=(i<=0||i>=w)?-1:1; l*=(j<=0||j>=h)?-1:1; part concerns me most
  • u/joeytwiddle
    Well this is 2 chars shorter: if(j<=0||j>=h)l=-l; // and this is the same: (j<0||j>h)&&(l=-l); // You could also drop the four =s for a small loss in quality.
  • u/sigveseb
    Looks nice!

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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)