This class contains data that defines a NurbCurve3d object. 

If the NurbCurve3d is not periodic, the length of the knot vector will be greater than length of the control array by degree+1. 

If the NurbCurve3d is periodic, the length of the knot vector will be greater than length of the control array by 1.

Public Structure NurbCurve3dData
End Structure

public struct NurbCurve3dData {
}