Version: 2018.3 (switch to 2019.1a or 2017.4)
  • C#
Experimental: this API is experimental and might be changed or removed in the future.


class in UnityEditor.Experimental.TerrainAPI


Inherits from:ScriptableObject

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Base class for terrain painting tools.

Derive from this class to implement your own terrain painting tools.

using UnityEngine;
using UnityEditor;
using UnityEngine.Experimental.TerrainAPI;

namespace UnityEditor.Experimental.TerrainAPI { public class MyPaintHeightTool : TerrainPaintTool<MyPaintHeightTool> { Material m_Material = null; Material GetPaintMaterial() { if (m_Material == null) m_Material = new Material(Shader.Find("Hidden/Terrain/PaintHeight")); return m_Material; }

public override string GetName() { return "My Paint Height Tool"; }

public override string GetDesc() { return "Left click to raise.\n\nHold shift and left click to lower."; }

public override void OnSceneGUI(Terrain terrain, IOnSceneGUI editContext) { TerrainPaintUtilityEditor.ShowDefaultPreviewBrush(terrain, editContext.brushTexture, editContext.brushSize); }

public override bool OnPaint(Terrain terrain, IOnPaint editContext) { Material mat = TerrainPaintUtility.GetBuiltinPaintMaterial();

float rotationDegrees = 0.0f; BrushTransform brushXform = TerrainPaintUtility.CalculateBrushTransform(terrain, editContext.uv, editContext.brushSize, rotationDegrees); PaintContext paintContext = TerrainPaintUtility.BeginPaintHeightmap(terrain, brushXform.GetBrushXYBounds());

// apply brush Vector4 brushParams = new Vector4(editContext.brushStrength * 0.01f, 0.0f, 0.0f, 0.0f); mat.SetTexture("_BrushTex", editContext.brushTexture); mat.SetVector("_BrushParams", brushParams); TerrainPaintUtility.SetupTerrainToolMaterialProperties(paintContext, brushXform, mat);

Graphics.Blit(paintContext.sourceRenderTexture, paintContext.destinationRenderTexture, mat, (int)TerrainPaintUtility.BuiltinPaintMaterialPasses.RaiseLowerHeight);

TerrainPaintUtility.EndPaintHeightmap(paintContext, "Terrain Paint - MyPaintHeightTool"); return false; } } }

Public Methods

GetDescRetrieves the description of the custom terrain tool.
GetNameRetrieves the name of the custom terrain tool.
OnDisableCalled when the tool is destroyed.
OnEnableCalled when the tool is created.
OnEnterToolModeCalled when the tool is activated.
OnExitToolModeCalled when the tool becomes inactive.
OnInspectorGUICustom terrain tool OnInspectorGUI callback.
OnPaintCustom terrain tool paint callback.
OnSceneGUICustom terrain tool OnSceneGUI callback.

Inherited Members


hideFlagsShould the object be hidden, saved with the Scene or modifiable by the user?
nameThe name of the object.

Public Methods

GetInstanceIDReturns the instance id of the object.
ToStringReturns the name of the GameObject.

Static Methods

DestroyRemoves a gameobject, component or asset.
DestroyImmediateDestroys the object obj immediately. You are strongly recommended to use Destroy instead.
DontDestroyOnLoadDo not destroy the target Object when loading a new Scene.
FindObjectOfTypeReturns the first active loaded object of Type type.
FindObjectsOfTypeReturns a list of all active loaded objects of Type type.
InstantiateClones the object original and returns the clone.
CreateInstanceCreates an instance of a scriptable object.


boolDoes the object exist?
operator !=Compares if two objects refer to a different object.
operator ==Compares two object references to see if they refer to the same object.


AwakeThis function is called when the ScriptableObject script is started.
OnDestroyThis function is called when the scriptable object will be destroyed.

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