IEvaluate2 Method (ICurve)

Evaluates the curve at the specified parameter of the curve.

.NET Syntax

Visual Basic (Declaration)
```Function IEvaluate2( _
ByVal Parameter As Double, _
ByVal NumberOfDerivatives As Integer _
) As Double```
Visual Basic (Usage)
``````Dim instance As ICurve
Dim Parameter As Double
Dim NumberOfDerivatives As Integer
Dim value As Double

value = instance.IEvaluate2(Parameter, NumberOfDerivatives)``````
C#
```double IEvaluate2(
double Parameter,
int NumberOfDerivatives
)```
C++/CLI
```double IEvaluate2(
&   double Parameter,
&   int NumberOfDerivatives
) ```

Parameters

Parameter

Curve parameter

NumberOfDerivatives

Number of derivatives

Return Value

Array of doubles (see Remarks)

Remarks

To determine a valid parameter range, use ICurve::GetEndParams or IEdge::GetCurveParams2.

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 could 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:

 Curve type Maximum number of derivatives Line/circle/ellipse 2 Intersection curve 2 Constant parameter line Determined by underlying surface SP-curve 2 B-curve Any number

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.

Availability

SolidWorks 2007 SP5, Revision Number 15.5

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