func (v Vec3) Len() float32 {
	return math32.Sqrt(v[0]*v[0] + v[1]*v[1] + v[2]*v[2])
}
func (v Vec3) Len() float32 {
	return math32.Sqrt(v[0]*v[0] + v[1]*v[1] + v[2]*v[2])
}
func ( v Vec3 ) Len ( ) float32 { return math32 . Sqrt ( v [ 0 ] * v [ 0 ] + v [ 1 ] * v [ 1 ] + v [ 2 ] * v [ 2 ] ) }
// Len derives the scalar scalar length of the vector. (len)
Len derives the scalar scalar length of the vector . ( len )