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SurfaceEvaluate Method

Evaluates a surface mathematically.

Namespace:  Rhino.Geometry
Assembly:  RhinoCommon (in RhinoCommon.dll)
Since: 5.0
Syntax
Copy
public bool Evaluate(
	double u,
	double v,
	int numberDerivatives,
	out Point3d point,
	out Vector3d[] derivatives
)

Parameters

u
Type: SystemDouble
A U parameter.
v
Type: SystemDouble
A V parameter.
numberDerivatives
Type: SystemInt32
The number of derivatives.
point
Type: Rhino.GeometryPoint3d
A point. This out parameter will be assigned during this call.
derivatives
Type: Rhino.GeometryVector3d
A vector array. This out parameter will be assigned during this call. This can be null.

Return Value

Type: Boolean
true if the operation succeeded; false otherwise.
Remarks
The partial derivatives will be in the order {Su, Sv} for numberDerivatives = 1, {Su, Sv, Suu, Suv, Svv} for 2, {Su, Sv, Suu, Suv, Svv, Suuu, Suuv, Suvv, Svvv} for 3, and similar for higher counts.
See Also