SurfaceEvaluator.getFirstDerivative Method
Parent Object:
SurfaceEvaluatorDefined in namespace "adsk::core" and the header file is <Core/Geometry/SurfaceEvaluator.h>
Description
Get the first derivative of the surface at the specified parameter position.
Syntax
"surfaceEvaluator_var" is a variable referencing a SurfaceEvaluator object.
(returnValue, partialU, partialV) = surfaceEvaluator_var.getFirstDerivative(parameter) |
#include <Core/Geometry/SurfaceEvaluator.h
// Declare the output arguments.
Ptr<Point2D> parameter;
Ptr<Vector3D> partialU;
Ptr<Vector3D> partialV;
boolean returnValue = surfaceEvaluator_var->getFirstDerivative(parameter, partialU, partialV);
|
Return Value
| boolean |
Returns true if the first derivative was successfully returned. |
Parameters
| parameter |
Point2D |
The parameter positions to get the surface first derivative at. The parameter position must be within the range of the parameter extents as verified by isParameterOnFace. |
| partialU |
Vector3D |
The output first derivative U partial vector at the parameter position specified. |
| partialV |
Vector3D |
The output first derivative V partial vector at the parameter position specified. |
Version
Introduced in version August 2014
