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isPowerOfTwo

  1. function isPowerOfTwo(value) {
  2.   return (value & (value - 1)) === 0 && value !== 0;
  3. }
  4.  
  5. for (let i = 0; i < 66; i++) {
  6.   console.log(i, isPowerOfTwo(i));
  7. }

I’ve had the pleasure of using THREE.js quite a bit over the years. The MathUtils file has some great utility functions. This version of isPowerOfTwo comes straight from there. I may post a few more from there in the future…

snippet.zone ~ 2021-22 /// {s/z}