---
title: TerrainLayerPaintRule(int)
product: Unity Editor
version: '7000.0'
latest_version: '7000.0'
status: This page documents version 7000.0. The latest version is 7000.0.
canonical: https://docs.unity.com/en-us/engine/7000.0/script-reference/unityeditor/terraintools/terrainlayerpaintrule/ctor
latest_url: https://docs.unity.com/en-us/engine/7000.0/script-reference/unityeditor/terraintools/terrainlayerpaintrule/ctor.md
last_updated: 2026-10-20
generated_at: 2026-11-11T14:01:08.558Z
locale: en-us
---

# TerrainLayerPaintRule(int)

> Creates a rule that paints a layer everywhere in the region at full opacity.

## Definition

* **Type:** Constructor
* **Namespace:** [UnityEditor.TerrainTools](/engine/7000.0/script-reference/unityeditor/terraintools.md)
* **Assembly:** UnityEditor

```csharp
public TerrainLayerPaintRule(int layerIndex)
```

### Parameters

**** (\[int]\(https\://learn.microsoft.com/dotnet/api/system.int32)): The index of the layer in [TerrainData.terrainLayers](/engine/7000.0/script-reference/unityengine/terraindata/terrainlayers.md).