API Reference > OdDb Classes > OdDbNurbSurface Class > OdDbNurbSurface Methods > OdDbNurbSurface::modifyPositionAndTangent Method
OdDbNurbSurface::modifyPositionAndTangent Method
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Syntax
C++
OdResult modifyPositionAndTangent(double dU, double dV, const OdGePoint3d& point, const OdGeVector3d* uDeriv = NULL, const OdGeVector3d* vDeriv = NULL);
Parameters
Parameters 
Description 
double dU 
[in] u parameter.  
double dV 
[in] v parameter.  
const OdGePoint3d& point 
[in] A new location of the point on the surface.  
const OdGeVector3d* uDeriv = NULL 
[in] The tangent vector in the u direction.  
const OdGeVector3d* vDeriv = NULL 
[in] The tangent vector in the v direction.
 
Returns

Returns eOk if successful. If the surface doesn't contain any NURBS information, returns eFail.

Description

Adjusts the location and tangent of a point on the surface with the specified parameter ([u, v]). The local control points are adjusted accordingly. If the pointer uDeriv and vDeriv are equal to NULL, then only the location of the point is adjusted. 

 

Remarks

This method is not implemented.

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