Surface.Evaluate

Public Class

Evaluates a surface mathematically.

Namespace: Rhino.Geometry

Assembly: RhinoCommon (in RhinoCommon.dll)

**Since:**5.0

Syntax

public bool Evaluate(
  double u,
  double v,
  int numberDerivatives,
  out Point3d point,
  out Vector3d[] derivatives
)

Parameters

u

Type:System.Double
A U parameter.

v

Type:System.Double
A V parameter.

numberDerivatives

Type:System.Int32
The number of derivatives.

point

Type: Rhino.Geometry.Point3d.
A point. This out parameter will be assigned during this call.

derivatives

Type:. Rhino.Geometry.Vector3d..
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.