| CopyActiveRenderTextureToHeightmap | Copies the specified part of the active RenderTexture to the Terrain heightmap texture. |
| CopyActiveRenderTextureToTexture | Copies the specified part of the active RenderTexture to the Terrain texture. |
| DirtyHeightmapRegion | Marks the specified part of the heightmap as dirty. |
| DirtyTextureRegion | Marks the specified part of the Terrain texture as dirty. |
| GetAlphamaps | Returns the alpha map at a position x, y given a width and height. |
| GetAlphamapTexture | Returns the alphamap texture at the specified index. |
| GetDetailLayer | Returns a 2D array of the detail object density in the specific location. |
| GetHeight | Gets the height at a certain point x,y. |
| GetHeights | Get an array of heightmap samples. |
| GetInterpolatedHeight | Gets an interpolated height at a point x,y. The x and y coordinates are clamped to [0, 1]. |
| GetInterpolatedHeights | Gets an array of terrain height values using the normalized x,y coordinates. |
| GetInterpolatedNormal | Get an interpolated normal at a given location. |
| GetMaximumHeightError | Returns an array of tesselation maximum height error values per renderable terrain patch. The returned array can be modified and passed to OverrideMaximumHeightError. |
| GetPatchMinMaxHeights | Returns an array of min max height values for all the renderable patches in a terrain. The returned array can be modified and then passed to OverrideMinMaxPatchHeights. |
| GetSteepness | Gets the gradient of the terrain at point (x,y). |
| GetSupportedLayers | Returns an array of all supported detail layer indices in the area. |
| GetTreeInstance | Get the tree instance at the specified index. It is used as a faster version of treeInstances[index] as this function doesn't create the entire tree instances array. |
| OverrideMaximumHeightError | Override the maximum tessellation height error with user provided values. Note that the overriden values get reset when the terrain resolution is changed and stays unchanged when the terrain heightmap is painted or changed via script. |
| OverrideMinMaxPatchHeights | Override the minimum and maximum patch heights for every renderable terrain patch. Note that the overriden values get reset when the terrain resolution is changed and stays unchanged when the terrain heightmap is painted or changed via script. |
| RefreshPrototypes | Reloads all the values of the available prototypes (ie, detail mesh assets) in the TerrainData Object. |
| SetAlphamaps | Assign all splat values in the given map area. |
| SetBaseMapDirty | Marks the terrain data as dirty to trigger an update of the terrain basemap texture. |
| SetDetailLayer | Sets the detail layer density map. |
| SetDetailResolution | Set the resolution of the detail map. |
| SetHeights | Set an array of heightmap samples. |
| SetHeightsDelayLOD | Set an array of heightmap samples. |
| SetTerrainLayersRegisterUndo | This function sets the terrainLayers property, and in addition, registers the action to the Editor's undo stack. |
| SetTreeInstance | Set the tree instance with new parameters at the specified index. However, TreeInstance.prototypeIndex and TreeInstance.position can not be changed otherwise an ArgumentException will be thrown. |
| SetTreeInstances | Sets the Tree Instance array, and optionally snaps Trees onto the surface of the Terrain heightmap. |
| SyncHeightmap | Performs synchronization queued by previous calls to CopyActiveRenderTextureToHeightmap and DirtyHeightmapRegion, which makes the height data and LOD data used for tessellation up to date. |
| SyncTexture | Performs synchronization queued by previous calls to CopyActiveRenderTextureToAlphamap and DirtyAlphamapRegion, which makes CPU data of the alpha map textures up to date. |