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StartTangent Property

The tangent vector at the start of the curve.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0)
Since: 2014

Syntax

C# 
public XYZ StartTangent { get; set; }
Visual Basic 
Public Property StartTangent As XYZ
	Get
	Set
Visual C++ 
public:
property XYZ^ StartTangent {
	XYZ^ get ();
	void set (XYZ^ value);
}

Field Value

This must be a nomalized unit vector.

Exceptions

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

See Also