public static void SeveToMesh()
{
Transform[] transforms = Selection.transforms;
foreach (Transform transform in transforms)
{
EditorUtility.DisplayProgressBar("Generate...", "heightmap", 0f);
Terrain terrain = transform.GetComponent <Terrain>();
Vector3 size = terrain.terrainData.size;
int w = terrain.terrainData.heightmapWidth;
int h = terrain.terrainData.heightmapHeight;
int resolution = terrain.terrainData.heightmapResolution;
float[,] heightmap = terrain.terrainData.GetHeights(0, 0, w, h);
EditorUtility.DisplayProgressBar("Generate...", "MeshRect", 0.1f);
//网格密度
int meshx = 32;
int meshz = 32;
Mesh mesh = CodeMesh.GetCellXZRect(meshx, meshz, 0, 0, 1f, 1f, size.x / (float)meshx, size.z / (float)meshz);
EditorUtility.DisplayProgressBar("Generate...", "SetHeight", 0.6f);
CodeMesh.SetHeight(terrain, mesh, (int)size.x, (int)size.z);
EditorUtility.DisplayProgressBar("Generate...", "Recalculate", 0.9f);
//修改完高度以后重新运算法线
mesh.RecalculateNormals();
//修改完高度以后重新运算切线
mesh.RecalculateTangents();
//修改完高度以后重新运算包围盒子
mesh.RecalculateBounds();
EditorUtility.DisplayProgressBar("Generate...", "SaveMesh", 0.9f);
AssetDatabase.CreateAsset(mesh, "Assets/T4MOBJ/" + terrain.name + ".asset");
AssetDatabase.Refresh();
EditorUtility.ClearProgressBar();
}
}
public static void SeveToMeshCell()
{
Transform[] transforms = Selection.transforms;
foreach (Transform transform in transforms)
{
EditorUtility.DisplayProgressBar("Generate...", "Heightmap", 0f);
Terrain terrain = transform.GetComponent <Terrain>();
Vector3 size = terrain.terrainData.size;
int w = terrain.terrainData.heightmapWidth;
int h = terrain.terrainData.heightmapHeight;
int resolution = terrain.terrainData.heightmapResolution;
float[,] heightmap = terrain.terrainData.GetHeights(0, 0, w, h);
EditorUtility.DisplayProgressBar("Generate...", "Cutting", 0.1f);
/*
* int meshx = 32;
* int meshz = 32;
*
* Mesh mesh = CodeMesh.GetCellXZRect(meshx, meshz);
* CodeMesh.SetHeight(terrain, mesh, meshx, meshz);
*/
List <MeshCell> list = new List <MeshCell>();
//地图块密度
int cellxNum = 8;
int cellzNum = 8;
CodeMesh.Cutting(terrain, cellxNum, cellzNum, list);
EditorUtility.DisplayProgressBar("Generate...", "TerrainMeshCell", 0.7f);
GameObject terrainMeshCellRoot = new GameObject("TerrainMeshCellRoot");
if (terrain.gameObject.transform.parent != null)
{
terrainMeshCellRoot.transform.parent = terrain.gameObject.transform.parent;
}
terrainMeshCellRoot.transform.position = terrain.gameObject.transform.position;
for (int i = 0; i < list.Count; i++)
{
MeshCell meshCell = list[i];
Mesh mesh = meshCell.mesh;
//修改完高度以后重新运算法线
//mesh.RecalculateNormals();
//修改完高度以后重新运算切线
//mesh.RecalculateTangents();
//修改完高度以后重新运算包围盒子
//mesh.RecalculateBounds();
GameObject terrainMeshCell = new GameObject("TerrainMeshCell_" + mesh.name);
terrainMeshCell.transform.parent = terrainMeshCellRoot.transform;
terrainMeshCell.transform.localPosition = new Vector3(meshCell.xIndex * size.x / cellxNum, 0, meshCell.zIndex * size.z / cellzNum);
MeshFilter meshFilter = terrainMeshCell.AddComponent <MeshFilter>();
meshFilter.sharedMesh = mesh;
terrainMeshCell.AddComponent <MeshRenderer>();
terrainMeshCell.AddComponent <MeshCollider>();
//AssetDatabase.CreateAsset(mesh, "Assets/T4MOBJ/" + terrain.name +"_"+ mesh.name + ".asset");
//AssetDatabase.Refresh();
}
if (true)
{
Vector3 terrainSize = terrain.terrainData.size;
int meshx = (int)terrainSize.x;
int meshz = (int)terrainSize.z;
Mesh terrainMesh = CodeMesh.GetCellXZRect(meshx, meshz);
CodeMesh.SetHeight(terrain, terrainMesh, meshx, meshz);
//修改完高度以后重新运算法线
terrainMesh.RecalculateNormals();
//修改完高度以后重新运算切线
terrainMesh.RecalculateTangents();
//修改完高度以后重新运算包围盒子
terrainMesh.RecalculateBounds();
GameObject terrainMeshCell = new GameObject("TerrainMesh");
terrainMeshCell.transform.parent = terrainMeshCellRoot.transform;
terrainMeshCell.transform.localPosition = new Vector3(0, 0, 0);
MeshFilter meshFilter = terrainMeshCell.AddComponent <MeshFilter>();
meshFilter.sharedMesh = terrainMesh;
MeshRenderer meshRenderer = terrainMeshCell.AddComponent <MeshRenderer>();
}
}
EditorUtility.ClearProgressBar();
}
public static void Cutting(Terrain terrain, int cellxNum, int cellzNum, List <MeshCell> list)
{
Vector3 size = terrain.terrainData.size;
int meshx = (int)size.x;
int meshz = (int)size.z;
#if UNITY_EDITOR
EditorUtility.DisplayProgressBar("Generate...", "terrainMesh GetCellRect", 0.15f);
#endif
Mesh terrainMesh = CodeMesh.GetCellXZRect(meshx, meshz);
#if UNITY_EDITOR
EditorUtility.DisplayProgressBar("Generate...", "terrainMesh SetHeight", 0.2f);
#endif
CodeMesh.SetHeight(terrain, terrainMesh, meshx, meshz);
#if UNITY_EDITOR
EditorUtility.DisplayProgressBar("Generate...", "terrainMesh Recalculate Normals,Tangents", 0.3f);
#endif
//修改完高度以后重新运算法线
terrainMesh.RecalculateNormals();
//修改完高度以后重新运算切线
terrainMesh.RecalculateTangents();
#if UNITY_EDITOR
EditorUtility.DisplayProgressBar("Generate...", "save Recalculate Normals,Tangents", 0.35f);
#endif
normal = new Vector3[meshx + 1, meshz + 1];
tangent = new Vector4[meshx + 1, meshz + 1];
for (int i = 0; i < terrainMesh.vertices.Length; i++)
{
Vector3 vertice = terrainMesh.vertices[i];
int x = (int)vertice.x;
int z = (int)vertice.z;
normal[x, z] = terrainMesh.normals[i];
tangent[x, z] = terrainMesh.tangents[i];
}
//HeightMapDic.Add(v2, vertice.y);
int heightmapWidth = terrain.terrainData.heightmapWidth;
int heightmapHeight = terrain.terrainData.heightmapHeight;
float heightmapWidth_size_x = heightmapWidth / size.x;
float heightmapHeight_size_z = heightmapHeight / size.z;
//单个地图块的尺寸
int cellxSize = Mathf.RoundToInt(size.x / cellxNum);
int cellzSize = Mathf.RoundToInt(size.z / cellzNum);
int heightmapXSize = Mathf.RoundToInt(cellxSize * heightmapWidth_size_x);
int heightmapZSize = Mathf.RoundToInt(cellzSize * heightmapHeight_size_z);
float uOffset = 0;
float vOffset = 0;
float uSize = 1f / cellxNum;
float vSize = 1f / cellzNum;
Vector2 key = new Vector2();
#if UNITY_EDITOR
EditorUtility.DisplayProgressBar("Generate...", "terrainMesh Cell", 0.38f);
#endif
for (int i = 0; i < cellxNum; i++)
{
#if UNITY_EDITOR
EditorUtility.DisplayProgressBar("Generate...", "terrainMesh Cell", 0.38f + 0.6f * (float)i / (float)cellxNum);
#endif
for (int j = 0; j < cellzNum; j++)
{
uOffset = i * uSize;
vOffset = j * vSize;
Mesh mesh = GetCellXZRect(cellxSize, cellzSize, uOffset, vOffset, uSize, vSize);
Vector3[] vertices = mesh.vertices;
Vector3[] normals = new Vector3[vertices.Length];
Vector4[] tangents = new Vector4[vertices.Length];
for (int k = 0; k < vertices.Length; k++)
{
Vector3 p = vertices[k];
int x = (int)p.x + i * cellxSize;
int z = (int)p.z + j * cellzSize;
key.x = x;
key.y = z;
//Vector2 v2 = new Vector2(vertice.x, vertice.z);
p.y = HeightMapDic[x, z];
Debug.LogWarning("key = >>" + key + ",HeightMapDic = " + HeightMapDic[x, z]);
vertices[k] = p;
normals[k] = normal[x, z];
tangents[k] = tangent[x, z];
}
mesh.vertices = vertices;
//修改完高度以后重新运算法线
mesh.normals = normals;
//修改完高度以后重新运算切线
mesh.tangents = tangents;
//修改完高度以后重新运算包围盒子
mesh.RecalculateBounds();
/*
* heightmapXOffset = i * Mathf.RoundToInt(cellxSize * heightmapWidth_size_x);
* heightmapZOffset = j * Mathf.RoundToInt(cellzSize * heightmapHeight_size_z);
*
* float sy = terrain.terrainData.size.y;
* float[,] heightmap = terrain.terrainData.GetHeights(heightmapXOffset, heightmapZOffset, heightmapXSize, heightmapZSize);
*
* SetHeightMap(mesh, cellxSize + 1, cellzSize + 1, heightmap, heightmapXSize, heightmapZSize, sy);
*/
list.Add(new MeshCell(i, j, mesh));
}
}
#if UNITY_EDITOR
EditorUtility.DisplayProgressBar("Generate...", "terrainMesh Cell", 0.38f + 0.6f + 0.02f);
#endif
}
