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BezierCurveTangentAt Method
Evaluates the unit tangent vector at a curve parameter.

Namespace: Rhino.Geometry
Assembly: RhinoCommon (in RhinoCommon.dll) Version: 5.1.50000.0 (5.0.20693.0)
Syntax
public Vector3d TangentAt(
	double t
)

Parameters

t
Type: SystemDouble
Evaluation parameter.

Return Value

Type: Vector3d
Unit tangent vector of the curve at the parameter t.
Remarks
No error handling.
See Also