API Reference > OdDb Classes > OdDbLine Class > OdDbLine Methods > OdDbLine::getSecondDeriv Method
OdDbLine::getSecondDeriv Method
Syntax
C++
virtual OdResult getSecondDeriv(double param, OdGeVector3d& secondDeriv) const;
Parameters 
Description 
double param 
[in] Parameter value specifying the point on the line as a Double value.  
OdGeVector3d& secondDeriv 
[out] Reference to a variable in which this method must save the second derivative as three-dimensional vector instance. 

Computes the second derivative for the specified parameter of the line entity and returns the three-dimensional vector instance. The second derivative is constant for any point of the line. 

 

Example of Working with the Line Object 

Computed Line Properties

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