code: func (v Vec3) Approx(v1 Vec3) bool {
  	return math32.Approx(v[0], v1[0]) &&
  		math32.Approx(v[1], v1[1]) &&
  		math32.Approx(v[2], v1[2])
  }
docs: // Approx reports wether v and v1 are approximately equal.
  //
  // Element-wise approximation uses math32.Approx()