ReferencePlane.Direction Property

The direction of the reference plane.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.1.0.0 (26.1.0.34)

Syntax

public XYZ Direction { get; set; }

Exception	Condition
ArgumentNullException	When setting this property: A non-optional argument was null
ArgumentOutOfRangeException	When setting this property: newDir has zero length.

When setting this property, an exception will be thrown if the direction vector is not perpendicular to the normal vector.