static UtilityLibraries.Vector ConvertToUtilityVector(DongUtility.Vector vector)
 {
     return(new UtilityLibraries.Vector(vector.X, vector.Y, vector.Z));
 }
 static public Vector3D ConvertVector(DongUtility.Vector vec)
 {
     return(new Vector3D(vec.X, vec.Y, vec.Z));
 }