Returns a normal unit vector at the given index.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 21.0.0.0 (21.1.1.109)
Since: 2021

Syntax

C#
`public XYZ GetNormal( int idx )`

Visual Basic
`Public Function GetNormal ( _ idx As Integer _ ) As XYZ`

Visual C++
`public: XYZ^ GetNormal( int idx )`

idx: Type: System Int32
A zero-based index. It must be consistent with the DistributionOfNormals.

XYZ value representing a normal unit vector.

Exceptions

Exception	Condition
Autodesk.Revit.Exceptions ArgumentException	The given value is not a valid index of a normal of the mesh. A valid value is not negative and is smaller than the number of normals in the mesh.