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CurveDerivativeAt Method (Double, Int32, CurveEvaluationSide)

Evaluate the derivatives at the specified curve parameter.

Namespace:  Rhino.Geometry
Assembly:  RhinoCommon (in RhinoCommon.dll)
public Vector3d[] DerivativeAt(
	double t,
	int derivativeCount,
	CurveEvaluationSide side


Type: SystemDouble
Curve parameter to evaluate.
Type: SystemInt32
Number of derivatives to evaluate, must be at least 0.
Type: Rhino.GeometryCurveEvaluationSide
Side of parameter to evaluate. If the parameter is at a kink, it makes a big difference whether the evaluation is from below or above.

Return Value

Type: Vector3d
An array of vectors that represents all the derivatives starting at zero.
Version Information

Rhino for Mac

Supported in: 5.4

Rhino for Windows

Supported in: 6.20
See Also