API Reference > OdGe Classes > OdGeCubicSplineCurve3d Class > OdGeCubicSplineCurve3d Methods > OdGeCubicSplineCurve3d::firstDerivAt Method
OdGeCubicSplineCurve3d::firstDerivAt Method
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Syntax
C++
OdGeVector3d firstDerivAt(int fitPointIndex) const;
Parameters
Parameters 
Description 
int fitPointIndex 
[in] Fit point index.
 
Returns

First derivative at the specified index.

Description

Returns the first derivative at the specified index. 

 

Remarks

Currently not implemented.

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