API Reference > OdGe Classes > OdGePointOnSurface Class > OdGePointOnSurface Methods > uDeriv Method > OdGePointOnSurface::uDeriv Method (int, OdGeSurface&, OdGePoint2d&)
OdGePointOnSurface::uDeriv Method (int, OdGeSurface&, OdGePoint2d&)
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Parameters |
Description |
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int order |
[in] Specifies the order of the derivitive [1-2]. |
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const OdGeSurface& surface |
[in] Any surface. |
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const OdGePoint2d& param |
[in] Parameter to specify a point on surface. |
Returns the specified derivative of the surface in the U direction at the point corresponding to the parameter.
Specifying surface or param updates the underlying value.
Currently not implemented.
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