CurveEvaluator3D.getFirstDerivative Method
Parent Object:
CurveEvaluator3DDefined in namespace "adsk::core" and the header file is <Core/Geometry/CurveEvaluator3D.h>
Description
Get the first derivative of the curve at the specified parameter position.
Syntax
"curveEvaluator3D_var" is a variable referencing a CurveEvaluator3D object.
(returnValue, firstDerivative) = curveEvaluator3D_var.getFirstDerivative(parameter) |
#include <Core/Geometry/CurveEvaluator3D.h
// Declare the output arguments.
double parameter;
Ptr<Vector3D> firstDerivative;
boolean returnValue = curveEvaluator3D_var->getFirstDerivative(parameter, firstDerivative);
|
Return Value
| boolean |
Returns true if the first derivative was successfully returned. |
Parameters
| parameter |
double |
The parameter position to get the curve first derivative at. The parameter value must be within the range of the parameter extents as provided by getParameterExtents. |
| firstDerivative |
Vector3D |
The output first derivative vector at the parameter position specified. |
Version
Introduced in version August 2014
