# GetNormal(bool)

> Returns the Normal extras slice. Vector3 per vertex.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine.UIElements](/engine/6000.7/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
public NativeSlice<Vector3> GetNormal(bool allocate = false)
```

### Parameters

**** (\[bool]\(https\://learn.microsoft.com/dotnet/api/system.boolean)): When true, attaches a fresh slice sized to `vertices.Length` if the channel isn't already present. Returns empty if the channel is disabled on the panel's [ExtraVertexChannels](/engine/6000.7/script-reference/unityengine/uielements/extravertexchannels.md) mask. Idempotent on re-call.

### Returns

| Type                                                                                       | Description |
| ------------------------------------------------------------------------------------------ | ----------- |
| [NativeSlice\<Vector3>](/engine/6000.7/script-reference/unity/collections/nativeslice1.md) |             |