Solid Edge Geometry Type Library
GetDerivatives Method
Solid Edge Geometry Type Library > Curve Object : GetDerivatives Method
Specifies the number of parameters to be evaluated.
Specifies the array of parameters at which to evaluate the curve.
Returns the array of first derivatives. Can be NULL if not required.
Returns the array of second derivatives. Can be NULL if not required.
Returns the array of third derivatives. Can be NULL if not required.
Description
Evaluates the derivatives of the referenced curve at the points given by an array of parameters on the curve.
Syntax
Visual Basic
Public Sub GetDerivatives( _
   ByVal NumParams As Long, _
   ByRef Params() As Double, _
   ByRef FirstDerv() As Double, _
   ByRef SecondDerv() As Double, _
   ByRef ThirdDerv() As Double _
)
Parameters
NumParams
Specifies the number of parameters to be evaluated.
Params
Specifies the array of parameters at which to evaluate the curve.
FirstDerv
Returns the array of first derivatives. Can be NULL if not required.
SecondDerv
Returns the array of second derivatives. Can be NULL if not required.
ThirdDerv
Returns the array of third derivatives. Can be NULL if not required.
Remarks
The derivatives up to the third order can be output. You can choose to not obtain any of the derivatives by specifying a NULL in place of the corresponding output argument.
See Also

Curve Object  | Curve Members

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