internal double GetDistance(CVector3Dbl rhs) => (Max(this, rhs) - Min(this, rhs)).GetLength();
internal static CVector3Dbl Max(CVector3Dbl lhs, CVector3Dbl rhs)
=> new CVector3Dbl(Math.Max(lhs.x, rhs.x),
Math.Max(lhs.y, rhs.y),
Math.Max(lhs.z, rhs.z));
