Created
June 9, 2015 12:01
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| // Terrain offset thing | |
| // Offsets terrain height, splats, details, trees | |
| // I place this code in the public domain. I accept no responsibility for broken terrains or any other bad things. | |
| // Version 1 | |
| using UnityEngine; | |
| using UnityEditor; | |
| using System.Collections.Generic; | |
| public class TerrainFixer : MonoBehaviour { | |
| static float wrapfloat(float v, float m) | |
| { | |
| if (v < 0) | |
| v += m; | |
| if (v >= m) | |
| v -= m; | |
| return v; | |
| } | |
| static int wrapint( int v, int m ) | |
| { | |
| return (v%m+m)%m; | |
| } | |
| [MenuItem("Sam/TerrainOffsetThing")] | |
| public static void DoSomething() | |
| { | |
| var Offset = new Vector3(-100, -100, 0); | |
| Terrain terr = Selection.activeGameObject.GetComponent<Terrain>(); | |
| if (terr == null) | |
| { | |
| Debug.LogError("You must select a terrain object."); | |
| return; | |
| } | |
| if (!EditorUtility.DisplayDialog("Confirm Terrain Mashing", "Are you sure you want to mangle terrain: " + terr.name, "OK", "Cancel")) | |
| return; | |
| TerrainData td = terr.terrainData; | |
| // Move trees | |
| Vector3 TreeOffset = new Vector3(Offset.x / td.size.x, 0, Offset.y / td.size.z); | |
| var oldtrees = td.treeInstances; | |
| List<TreeInstance> newTrees = new List<TreeInstance>(); | |
| for (int i = 0; i < oldtrees.Length; i++) | |
| { | |
| var tree = oldtrees[i]; | |
| Vector3 newpos = tree.position - TreeOffset; | |
| newpos.x = wrapfloat(newpos.x, 1.0f); | |
| newpos.z = wrapfloat(newpos.z, 1.0f); | |
| tree.position = newpos; | |
| newTrees.Add(tree); | |
| } | |
| td.treeInstances = new TreeInstance[newTrees.Count]; | |
| td.treeInstances = newTrees.ToArray(); | |
| // Move splatmaps | |
| { | |
| var oldalpha = td.GetAlphamaps(0, 0, td.alphamapWidth, td.alphamapHeight); | |
| var newalpha = new float[td.alphamapWidth, td.alphamapHeight, oldalpha.GetLength(2)]; | |
| int xoff = (int)((Offset.x / td.size.x) * td.alphamapWidth); | |
| int yoff = (int)((Offset.y / td.size.z) * td.alphamapHeight); | |
| for (int x = 0; x < td.alphamapWidth; x++) | |
| { | |
| for (int y = 0; y < td.alphamapHeight; y++) | |
| { | |
| for (int z = 0; z < oldalpha.GetLength(2); z++) | |
| { | |
| newalpha[x, y, z] = oldalpha[ | |
| wrapint( (x + xoff), td.alphamapWidth), | |
| wrapint( (y + yoff), td.alphamapHeight), z]; | |
| } | |
| } | |
| } | |
| td.SetAlphamaps(0, 0, newalpha); | |
| } | |
| // Move details: | |
| var layers = td.GetSupportedLayers(0,0,td.detailWidth, td.detailHeight); | |
| foreach( int layer in layers ) | |
| { | |
| var details = td.GetDetailLayer( 0, 0, td.detailWidth, td.detailHeight, layer ); | |
| var newdetails = new int[td.detailWidth, td.detailHeight]; | |
| int xoff = (int)((Offset.x / td.size.x) * td.detailWidth); | |
| int yoff = (int)((Offset.y / td.size.z) * td.detailHeight); | |
| for (int x = 0; x < td.detailWidth; x++) | |
| { | |
| for (int y = 0; y < td.detailHeight; y++) | |
| { | |
| newdetails[x, y] = details[wrapint((x + xoff) , td.detailWidth), wrapint( (y + yoff), td.detailHeight )]; | |
| } | |
| } | |
| td.SetDetailLayer(0, 0, layer, newdetails ); | |
| } | |
| // Move terrain height: | |
| { | |
| var heights = td.GetHeights(0, 0, td.heightmapWidth, td.heightmapHeight); | |
| var newheights = new float[td.heightmapWidth, td.heightmapHeight]; | |
| int yoff = (int)((Offset.y / td.size.z) * td.heightmapHeight); | |
| int xoff = (int)((Offset.x / td.size.x) * td.heightmapWidth); | |
| for (int x = 0; x < td.heightmapWidth; x++) | |
| { | |
| for (int y = 0; y < td.heightmapHeight; y++) | |
| { | |
| newheights[x, y] = heights[ wrapint( (x + xoff), td.heightmapWidth), wrapint( (y + yoff) , td.heightmapHeight)]; | |
| } | |
| } | |
| td.SetHeights(0, 0, newheights); | |
| } | |
| Debug.Log("Done!"); | |
| } | |
| } |
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