internal override void SetXML(XmlElement xml, BaseClassIfc host, HashSet<int> processed)
{
base.SetXML(xml, host, processed);
xml.SetAttribute("DirectionRatios", mDirectionRatioX.ToString() + " " + mDirectionRatioY.ToString() + (double.IsNaN(mDirectionRatioZ) ? "" : " " + mDirectionRatioZ.ToString()));
}