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CurveTangentAtStart Property

Evaluates the unit tangent vector at the start of the curve.

Namespace:  Rhino.Geometry
Assembly:  RhinoCommon (in RhinoCommon.dll)
public Vector3d TangentAtStart { get; }

Return Value

Type: Vector3d
Unit tangent vector of the curve at the start point.
No error handling.
Version Information

Rhino for Mac

Supported in: 5.4

Rhino for Windows

Supported in: 6.8
See Also