Function IGetBCurveParams3( _
   ByVal ArraySize As Integer _
) As Double

Dim instance As ICurve
Dim ArraySize As Integer
Dim value As Double
 
value = instance.IGetBCurveParams3(ArraySize)

double IGetBCurveParams3( 
   int ArraySize
)

double IGetBCurveParams3( 
&   int ArraySize
) 

Parameters

ArraySize

Size of the return array

Return Value

• in-process, unmanaged C++: Pointer to an array of doubles describing the parameters of the curve

See In-process Methods for details about this type of method.

Use ICurve::IGetBCurveParamsSize3 to determine the size of the array returned and whether the curve data returned by Curve::IGetBCurveParams3 is cubic rational or not.

To control the accuracy of the curve data, see IModeler::SetToleranceValue.

The return value retval is an array of doubles. The array size is ( 2 + numKnots + numControlPointDoubles) where numKnots is (numControlPoints + order). The array is as follows:

[ packedDouble1, packedDouble2, knot1, knot2,..., ControlPoint1[Dimension], ControlPoint2[Dimension],... ]

where:

• packedDouble1 is an integer pair containing the Dimension and Order

• packedDouble2  is an integer pair containing the NumControlPoints and Periodicity

• knot1

• knot2

...

• ControlPoint1[dimension]

• ControlPoint2[dimension]

...

The size of the control point array is based on the curve dimension:

•   If Dimension = 3, then ControlPoint is an array of 3 doubles ( x, y, z )

•   If Dimension = 4, then ControlPoint is an array of 4 doubles ( x, y, z, w ) where w = weight