function arrays(a, b, v) {
    var result = []; var length = b.length;
    for (var i = 0; i < length; i += 1) {
      // eslint-disable-next-line no-bitwise
      result[i] = ((a[i] + (b[i] - a[i]) * v) * 1000 >> 0) / 1000;
    }
    return result;
  }
Array Interpolation Function.

@param {number[]} a start array
@param {number[]} b end array
@param {number} v progress
@returns {number[]} the resulting array