API Reference > OdDg Classes > OdDgBSplineCurve3d Class > OdDgBSplineCurve3d Methods > TD_USING Method > OdDgBSplineCurve3d::TD_USING Method (OdDgCurveElement3d::getFirstDeriv)
OdDgBSplineCurve3d::TD_USING Method (OdDgCurveElement3d::getFirstDeriv)
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Syntax
C++
Description

This is TD_USING, a member of class OdDgBSplineCurve3d.

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