Function IGetSplinePtsSize( _
   ByRef PropArray As System.Integer, _
   ByRef KnotsArray As System.Double, _
   ByRef CntrlPntCoordArray As System.Double _
) As System.Integer

Dim instance As ICurve
Dim PropArray As System.Integer
Dim KnotsArray As System.Double
Dim CntrlPntCoordArray As System.Double
Dim value As System.Integer
 
value = instance.IGetSplinePtsSize(PropArray, KnotsArray, CntrlPntCoordArray)

System.int IGetSplinePtsSize( 
   ref System.int PropArray,
   ref System.double KnotsArray,
   ref System.double CntrlPntCoordArray
)

System.int IGetSplinePtsSize( 
&   System.int% PropArray,
&   System.double% KnotsArray,
&   System.double% CntrlPntCoordArray
) 

Parameters

PropArray

Array that includes dimension, order, number of control points, and periodicity

KnotsArray

knot1, knot2, ..., knotn

CntrlPntCoordArray

controlpoint1[dimension], controlpoint2[dimension], ...,  controlpointn[dimension]

Return Value

Size of the data set returned by ICurve::IGetSplinePts

PropArray contains 4 integers:

• Dimension
• Order
• Number of control points
• Periodicity ( True or false )

KnotsArray is an array of doubles with (Number of control points + Order) elements.

The size of the CntrlPntCoordArray array is based on the curve dimension.

• Dimension = 2 then each control point is an array of 2 doubles ( u, v )
• Dimension = 3 then each control point is an array of 3 doubles ( x, y, z)
• Dimension = 4 then each control point is an array of 4 doubles ( x, y, z, w ) where w = weight

Data passed into this method must satisfy the following requirements:

• If the curve is periodic, it must not have any repeated knots.
• If the curve is non-periodic, it must only have repeated knots at its ends.
• The curve must be cubic or lower degree, non-rational and have continuous first and second derivatives.

NOTE: For a linear or quadratic curve to satisfy these continuity requirements, it
must consist of a single segment.