Reference |
The direction of the reference plane.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)


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.
