API Reference > OdGe Classes > OdGePointOnSurface Class > OdGePointOnSurface Methods > uDeriv Method > OdGePointOnSurface::uDeriv Method (int)
OdGePointOnSurface::uDeriv Method (int)
Syntax
C++
OdGeVector3d uDeriv(int order) const;
Parameters 
Description 
int order 
[in] Specifies the order of the derivitive [1-2]. 

Returns the specified derivative of the surface in the U direction at the point corresponding to the parameter. 

 

Currently not implemented.

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