multiply = (out, a, b) => {
  out[0] = a[0] * b[0]
  out[1] = a[1] * b[1]
  out[2] = a[2] * b[2]
  return out
}
Multiply the coordinates of the given vectors (A*B).

@param {vec3} out - receiving vector
@param {vec3} a - first operand
@param {vec3} b - second operand
@returns {vec3} out
@alias module:modeling/maths/vec3.multiply