Description
Evaluate the derivative of the NURBS curve at the specified parameter and order.
Syntax
Function RFNurbsCurve.EvaluateDerivative(dParameter As Double, iOrder As Long, bFromLeft As Boolean, pDerivative As RFVector3) As RFErrorCode
The EvaluateDerivative syntax has these parts:
| Part | Description |
|---|---|
| dParameter | [IN] Double Required. Parameter to evaluate the derivative. |
| iOrder | [IN] Long Required. Order to evaluate the derivative. |
| bFromLeft | [IN] Boolean Required. Whether the calculation is performed from left or not. |
| pDerivative | [OUT] RFVector3 Required. Derivative of the NURBS curve at the specified parameter. |