RhinoCommon APICurveTangentAtStart Property Evaluates the unit tangent vector at the start of the curve. Namespace: Rhino.Geometry Assembly: RhinoCommon (in RhinoCommon.dll)SyntaxC#VBCopypublic Vector3d TangentAtStart { get; }Public ReadOnly Property TangentAtStart As Vector3d GetReturn ValueType: Vector3dUnit tangent vector of the curve at the start point.RemarksNo error handling.Version InformationRhino for MacSupported in: 5.4Rhino for WindowsSupported in: 6.8See AlsoReferenceCurve ClassRhino.Geometry NamespaceRhino 6.8.18210.11281 (Last updated: 09/08/2018)Copyright © 2009-2018 Robert McNeel & AssociatesReport wishes and bugs at discourse.mcneel.com