public override bool Equals(object obj)
{
if (this == obj) return true;
if (obj == null) return false;
if (obj is Mat33) return false;
Mat33 other = (Mat33)obj;
if (Ex == null)
{
if (other.Ex != null) return false;
}
else if (!Ex.Equals(other.Ex)) return false;
if (Ey == null)
{
if (other.Ey != null) return false;
}
else if (!Ey.Equals(other.Ey)) return false;
if (Ez == null)
{
if (other.Ez != null) return false;
}
else if (!Ez.Equals(other.Ez)) return false;
return true;
}