SurfaceEvaluatePoint(Point2d, Int32, Vector3dCollection, Vector3d) Method

Retrieves the 3D point on this surface that corresponds to the specified point parameter value.

Namespace: Teigha.Geometry
Assembly: TD_Mgd (in TD_Mgd.dll) Version: 26.9.0.0
Syntax
public Point3d EvaluatePoint(
        Point2d parameter,
        int derivOrder,
        ref Vector3dCollection derivatives,
        ref Vector3d normal
)

Parameters

parameter  Point2d
[in] Parameter to be evaluated (U, V).
derivOrder  Int32
[in] Maximum order of derivatives to be computed.
derivatives  Vector3dCollection
[out] Receives an array of derivatives at the point corresponding to param.
normal  Vector3d
[out] Receives the normal at the point corresponding to param.

Return Value

Point3d
Remarks
* If derivOrder is 1, then derivatives are ordered: du, dv * If derivOrder is 2, then derivatives are ordered: du, dudu, dv, dvdv, dudv * derivOrder >= 3 is not supported
See Also

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