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ODA Drawings SDK
API Reference > OdDg Classes > OdDgCurveElement3d Class > OdDgCurveElement3d Methods > getFirstDeriv Method > OdDgCurveElement3d::getFirstDeriv Method (const OdGePoint3d&, OdGeVector3d&)
OdDgCurveElement3d::getFirstDeriv Method (const OdGePoint3d&, OdGeVector3d&)
Syntax
C++
virtual OdResult getFirstDeriv(const OdGePoint3d& pointOnCurve, OdGeVector3d& firstDeriv) const;
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