API Reference > OdGe Classes > OdGeCubicSplineCurve2d Class > OdGeCubicSplineCurve2d Methods > OdGeCubicSplineCurve2d::firstDerivAt Method
OdGeCubicSplineCurve2d::firstDerivAt Method
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Syntax
C++
OdGeVector2d firstDerivAt(int fitPointIndex) const;
Parameters
Parameters 
Description 
int fitPointIndex 
[in] Fit point index. 
Description

Returns the first derivative at the specified index. 

 

Remarks

Currently not implemented.

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