HermiteSplineTangentsStartTangent Property

The tangent vector at the start of the curve.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.0.4.0 (26.0.4.0)

Syntax

public XYZ StartTangent { get; set; }

Public Property StartTangent As XYZ
	Get
	Set

public:
property XYZ^ StartTangent {
	XYZ^ get ();
	void set (XYZ^ value);
}

member StartTangent : XYZ with get, set

XYZ
This must be a nomalized unit vector.

Exceptions

Exception	Condition
ArgumentNullException	When setting this property: A non-optional argument was null
ArgumentOutOfRangeException	When setting this property: startTangent is not length 1.0.
InapplicableDataException	The start tangent value is not set.