public static void BuildTerrainTree(MenuCommand menuCommand)
{
GameObject[] SelectObjects = Selection.gameObjects;
foreach (GameObject SelectObject in SelectObjects)
{
Terrain terrain = SelectObject.GetComponent <Terrain>();
if (!terrain)
{
Debug.LogWarning("select GameObject doesn't have terrain component");
continue;
}
TerrainData terrainData = terrain.terrainData;
TreeComponent treeComponent = SelectObject.GetComponent <TreeComponent>();
if (treeComponent == null)
{
treeComponent = SelectObject.AddComponent <TreeComponent>();
}
treeComponent.terrain = terrain;
treeComponent.terrainData = terrainData;
treeComponent.OnSave();
treeComponent.treeSectors = new FTreeSector[terrainData.treePrototypes.Length];
for (int index = 0; index < terrainData.treePrototypes.Length; ++index)
{
treeComponent.treeSectors[index] = new FTreeSector();
treeComponent.treeSectors[index].treeIndex = index;
TreePrototype treePrototype = terrainData.treePrototypes[index];
List <Mesh> meshes = new List <Mesh>();
List <Material> materials = new List <Material>();
GameObject treePrefab = treePrototype.prefab;
LODGroup lodGroup = treePrefab.GetComponent <LODGroup>();
LOD[] lods = lodGroup.GetLODs();
//Collector Meshes&Materials
for (int j = 0; j < lods.Length; ++j)
{
ref LOD lod = ref lods[j];
Renderer renderer = lod.renderers[0];
MeshFilter meshFilter = renderer.gameObject.GetComponent <MeshFilter>();
meshes.AddUnique(meshFilter.sharedMesh);
for (int k = 0; k < renderer.sharedMaterials.Length; ++k)
{
materials.AddUnique(renderer.sharedMaterials[k]);
}
}
//Build LODInfo
FMeshLODInfo[] lodInfos = new FMeshLODInfo[lods.Length];
for (int l = 0; l < lods.Length; ++l)
{
ref LOD lod = ref lods[l];
ref FMeshLODInfo lodInfo = ref lodInfos[l];
Renderer renderer = lod.renderers[0];
lodInfo.screenSize = 1 - (l * 0.03125f);
lodInfo.materialSlot = new int[renderer.sharedMaterials.Length];
for (int m = 0; m < renderer.sharedMaterials.Length; ++m)
{
ref int materialSlot = ref lodInfo.materialSlot[m];
materialSlot = materials.IndexOf(renderer.sharedMaterials[m]);
}
