Function IEvaluate2( _
   ByVal Param As System.Double, _
   ByVal NumberOfDerivatives As System.Integer _
) As System.Double

Dim instance As ICoEdge
Dim Param As System.Double
Dim NumberOfDerivatives As System.Integer
Dim value As System.Double
 
value = instance.IEvaluate2(Param, NumberOfDerivatives)

System.double IEvaluate2( 
   System.double Param,
   System.int NumberOfDerivatives
)

System.double IEvaluate2( 
&   System.double Param,
&   System.int NumberOfDerivatives
) 

Parameters

Param

Curve parameter desired (U value desired for evaluation)

NumberOfDerivatives

Number of derivatives

Return Value

Array of doubles (see Remarks)

The tangency vector is defined to be in the direction of the coedge.

The format of the return value is an array of (NumberOfDerivatives + 1) * 3 doubles:

[evaluated point], [evaluated derivative 1],...[evaluated derivative NumberOfDerivatives]

In pseudo mathematical notation, this can be written as:

    P(t)  P(t)/dt  P(t)/dtdt ..........

 In terms of the number of derivatives that can be returned for a curve type, you could write:

where the curve type is from ICurve::Identity.

For a curve of type swCurveTypes_e::TRIMMED_TYPE, the number of derivatives is determined by the base curve as obtained from ICurve::GetBaseCurve.