Public Function AddByCenterRadiusNormal( _
   ByVal CenterX As Double, _
   ByVal CenterY As Double, _
   ByVal CenterZ As Double, _
   ByVal DirNormalX As Double, _
   ByVal DirNormalY As Double, _
   ByVal DirNormalZ As Double, _
   ByVal Radius As Double _
) As Ellipse3D