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