public static Color BakeNormal(Terrain t, float u, float v)
{
Color c = new Color(0, 0, 1, 1);
#if UNITY_EDITOR
if (t.terrainData == null)
{
MTLog.LogError("terrain data doesn't exist");
return(c);
}
int matCount = t.terrainData.alphamapTextureCount;
if (matCount <= 0)
{
return(c);
}
//base pass
Vector3 normal = BakeLayerNormal(t, 0, 0, u, v);
for (int i = 1; i < matCount; ++i)
{
normal += BakeLayerNormal(t, i, i * 4, u, v);
}
normal = normal.normalized;
c.r = 0.5f * (normal.x + 1f);
c.g = 0.5f * (normal.y + 1f);
c.b = 1;
c.a = 1;
#endif
return(c);
}
public void Add(T item)
{
if (Data == null || Length >= Data.Length)
{
MTLog.LogError("MTArray overflow : " + typeof(T));
}
Data[Length] = item;
++Length;
}
void ITerrainTreeScaner.Run(Vector3 center, out Vector3 hitpos, out Vector3 hitnormal)
{
hitpos = center;
hitnormal = Vector3.up;
RaycastHit hit = new RaycastHit();
if (Physics.Raycast(center, Vector3.down, out hit, CheckRayLen))
{
hitpos = hit.point;
hitnormal = hit.normal;
}
else
{
MTLog.LogError("scan didn't hit terrain");
}
}
private void RayCastBoundary(float fx, float fz, int x, int z, byte bk, SamplerTree sampler)
{
Vector3 top = vCheckTop + fx * Vector3.right + fz * Vector3.forward;
RaycastHit hit = new RaycastHit();
if (Physics.Raycast(top, Vector3.down, out hit, CheckRayLen))
{
SampleVertexData vert = new SampleVertexData();
vert.Position = hit.point;
vert.Normal = hit.normal;
vert.UV = new Vector2(fx / maxX / gridSize[0], fz / maxZ / gridSize[1]);
sampler.AddBoundary(subdivision, x, z, bk, vert);
}
else
{
MTLog.LogError("RayCastBoundary didn't hit terrain");
}
}
public static void SaveMaterials(string dataName, Terrain t)
{
if (t.terrainData == null)
{
MTLog.LogError("terrain data doesn't exist");
return;
}
int matCount = t.terrainData.alphamapTextureCount;
if (matCount <= 0)
{
return;
}
//base pass
SaveMaterail(dataName, t, 0, 0, "MT/Standard-BasePass");
for (int i = 1; i < matCount; ++i)
{
SaveMaterail(dataName, t, i, i * 4, "MT/Standard-AddPass");
}
AssetDatabase.SaveAssets();
AssetDatabase.Refresh();
}
public void StitchBorder(byte flag, byte nflag, float minDis, SamplerTree neighbour)
{
if (neighbour == null)
{
return;
}
if (flag <= RBCorner || nflag <= RBCorner)
{
return;
}
if (!Boundaries.ContainsKey(flag))
{
MTLog.LogError("SamplerTree boundary doesn't contains corner : " + flag);
return;
}
if (!neighbour.Boundaries.ContainsKey(nflag))
{
MTLog.LogError("SamplerTree neighbour boundary doesn't contains corner : " + nflag);
return;
}
if (StitchedBorders.Contains(flag) && neighbour.StitchedBorders.Contains(nflag))
{
return;
}
if (Boundaries[flag].Count > neighbour.Boundaries[nflag].Count)
{
neighbour.Boundaries[nflag].Clear();
neighbour.Boundaries[nflag].AddRange(Boundaries[flag]);
}
else
{
Boundaries[flag].Clear();
Boundaries[flag].AddRange(neighbour.Boundaries[nflag]);
}
//
StitchedBorders.Add(flag);
neighbour.StitchedBorders.Add(nflag);
}
public static Color BakePixel(Terrain t, float u, float v)
{
Color c = Color.black;
#if UNITY_EDITOR
if (t.terrainData == null)
{
MTLog.LogError("terrain data doesn't exist");
return(c);
}
int matCount = t.terrainData.alphamapTextureCount;
if (matCount <= 0)
{
return(c);
}
//base pass
for (int i = 0; i < matCount; ++i)
{
c += BakeLayerPixel(t, i, i * 4, u, v);
}
#endif
return(c);
}
private void StitchCorner(int x, int z)
{
SamplerTree center = GetSubTree(x, z);
if (!center.Boundaries.ContainsKey(SamplerTree.LBCorner))
{
MTLog.LogError("boundary data missing");
return;
}
SamplerTree right = GetSubTree(x + 1, z);
SamplerTree left = GetSubTree(x - 1, z);
SamplerTree right_top = GetSubTree(x + 1, z + 1);
SamplerTree top = GetSubTree(x, z + 1);
SamplerTree left_top = GetSubTree(x - 1, z + 1);
SamplerTree left_down = GetSubTree(x - 1, z - 1);
SamplerTree down = GetSubTree(x, z - 1);
SamplerTree right_down = GetSubTree(x + 1, z - 1);
if (!center.StitchedBorders.Contains(SamplerTree.LBCorner))
{
MergeCorners(center.Boundaries[SamplerTree.LBCorner],
left != null ? left.Boundaries[SamplerTree.RBCorner] : null,
left_down != null ? left_down.Boundaries[SamplerTree.RTCorner] : null,
down != null ? down.Boundaries[SamplerTree.LTCorner] : null);
center.StitchedBorders.Add(SamplerTree.LBCorner);
if (left != null)
{
left.StitchedBorders.Add(SamplerTree.RBCorner);
}
if (left_down != null)
{
left_down.StitchedBorders.Add(SamplerTree.RTCorner);
}
if (down != null)
{
left.StitchedBorders.Add(SamplerTree.LTCorner);
}
}
if (!center.StitchedBorders.Contains(SamplerTree.RBCorner))
{
MergeCorners(center.Boundaries[SamplerTree.RBCorner],
right != null ? right.Boundaries[SamplerTree.LBCorner] : null,
right_down != null ? right_down.Boundaries[SamplerTree.LTCorner] : null,
down != null ? down.Boundaries[SamplerTree.RTCorner] : null);
center.StitchedBorders.Add(SamplerTree.RBCorner);
if (right != null)
{
right.StitchedBorders.Add(SamplerTree.LBCorner);
}
if (right_down != null)
{
right_down.StitchedBorders.Add(SamplerTree.LTCorner);
}
if (down != null)
{
down.StitchedBorders.Add(SamplerTree.RTCorner);
}
}
if (!center.StitchedBorders.Contains(SamplerTree.LTCorner))
{
MergeCorners(center.Boundaries[SamplerTree.LTCorner],
left != null ? left.Boundaries[SamplerTree.RTCorner] : null,
left_top != null ? left_top.Boundaries[SamplerTree.RBCorner] : null,
top != null ? top.Boundaries[SamplerTree.LBCorner] : null);
center.StitchedBorders.Add(SamplerTree.LTCorner);
if (left != null)
{
left.StitchedBorders.Add(SamplerTree.RTCorner);
}
if (left_top != null)
{
left_top.StitchedBorders.Add(SamplerTree.RBCorner);
}
if (top != null)
{
top.StitchedBorders.Add(SamplerTree.LBCorner);
}
}
if (!center.StitchedBorders.Contains(SamplerTree.RTCorner))
{
MergeCorners(center.Boundaries[SamplerTree.RTCorner],
right != null ? right.Boundaries[SamplerTree.LTCorner] : null,
right_top != null ? right_top.Boundaries[SamplerTree.LBCorner] : null,
top != null ? top.Boundaries[SamplerTree.RBCorner] : null);
center.StitchedBorders.Add(SamplerTree.RTCorner);
if (right != null)
{
right.StitchedBorders.Add(SamplerTree.LTCorner);
}
if (right_top != null)
{
right_top.StitchedBorders.Add(SamplerTree.LBCorner);
}
if (top != null)
{
top.StitchedBorders.Add(SamplerTree.RBCorner);
}
}
}
private static void SaveMaterail(string path, string dataName, Terrain t, int matIdx, int layerStart, string shaderName)
{
#if UNITY_EDITOR
if (matIdx >= t.terrainData.alphamapTextureCount)
{
return;
}
string mathPath = string.Format("{0}/{1}_{2}.mat", path, dataName, matIdx);
Material mat = AssetDatabase.LoadAssetAtPath <Material>(mathPath);
if (mat != null)
{
AssetDatabase.DeleteAsset(mathPath);
}
//alpha map
byte[] alphaMapData = t.terrainData.alphamapTextures[matIdx].EncodeToTGA();
string alphaMapSavePath = string.Format("{0}/{1}_alpha{2}.tga",
path, dataName, matIdx);
if (File.Exists(alphaMapSavePath))
{
File.Delete(alphaMapSavePath);
}
FileStream stream = File.Open(alphaMapSavePath, FileMode.Create);
stream.Write(alphaMapData, 0, alphaMapData.Length);
stream.Close();
AssetDatabase.Refresh();
string alphaMapPath = string.Format("{0}/{1}_alpha{2}.tga", path,
dataName, matIdx);
//the alpha map texture has to be set to best compression quality, otherwise the black spot may
//show on the ground
TextureImporter importer = AssetImporter.GetAtPath(alphaMapPath) as TextureImporter;
if (importer == null)
{
MTLog.LogError("export terrain alpha map failed");
return;
}
importer.textureCompression = TextureImporterCompression.Uncompressed;
importer.textureType = TextureImporterType.Default;
importer.wrapMode = TextureWrapMode.Clamp;
EditorUtility.SetDirty(importer);
importer.SaveAndReimport();
Texture2D alphaMap = AssetDatabase.LoadAssetAtPath <Texture2D>(alphaMapPath);
//
Material tMat = new Material(Shader.Find(shaderName));
tMat.SetTexture("_Control", alphaMap);
if (tMat == null)
{
MTLog.LogError("export terrain material failed");
return;
}
for (int l = layerStart; l < layerStart + 4 && l < t.terrainData.terrainLayers.Length; ++l)
{
int idx = l - layerStart;
TerrainLayer layer = t.terrainData.terrainLayers[l];
Vector2 tiling = new Vector2(t.terrainData.size.x / layer.tileSize.x,
t.terrainData.size.z / layer.tileSize.y);
tMat.SetTexture(string.Format("_Splat{0}", idx), layer.diffuseTexture);
tMat.SetTextureOffset(string.Format("_Splat{0}", idx), layer.tileOffset);
tMat.SetTextureScale(string.Format("_Splat{0}", idx), tiling);
tMat.SetTexture(string.Format("_Normal{0}", idx), layer.normalMapTexture);
tMat.SetFloat(string.Format("_NormalScale{0}", idx), layer.normalScale);
tMat.SetFloat(string.Format("_Metallic{0}", idx), layer.metallic);
tMat.SetFloat(string.Format("_Smoothness{0}", idx), layer.smoothness);
}
AssetDatabase.CreateAsset(tMat, mathPath);
#endif
}
public static void LoadMesh(Mesh[] meshes, string dataName, int meshId)
{
string path = string.Format("{0}/MightyTerrainMesh/Resources/{1}_{2}.bytes",
Application.dataPath, dataName, meshId);
FileStream stream = File.Open(path, FileMode.Open);
_vec2Cache.Clear();
_intCache.Clear();
//lods
byte[] nBuff = new byte[sizeof(int)];
stream.Read(nBuff, 0, sizeof(int));
int lods = BitConverter.ToInt32(nBuff, 0);
if (meshes.Length != lods)
{
MTLog.LogError("meshes length does not match lods");
return;
}
for (int l = 0; l < lods; ++l)
{
meshes[l] = new Mesh();
//vertices
_vec3Cache.Clear();
nBuff = new byte[sizeof(int)];
stream.Read(nBuff, 0, sizeof(int));
int len = BitConverter.ToInt32(nBuff, 0);
for (int i = 0; i < len; ++i)
{
_vec3Cache.Add(ReadVector3(stream));
}
meshes[l].vertices = _vec3Cache.ToArray();
//normals
_vec3Cache.Clear();
stream.Read(nBuff, 0, sizeof(int));
len = BitConverter.ToInt32(nBuff, 0);
for (int i = 0; i < len; ++i)
{
_vec3Cache.Add(ReadVector3(stream));
}
meshes[l].normals = _vec3Cache.ToArray();
//uvs
_vec2Cache.Clear();
stream.Read(nBuff, 0, sizeof(int));
len = BitConverter.ToInt32(nBuff, 0);
for (int i = 0; i < len; ++i)
{
_vec2Cache.Add(ReadVector2(stream));
}
meshes[l].uv = _vec2Cache.ToArray();
//faces
_intCache.Clear();
stream.Read(nBuff, 0, sizeof(int));
len = BitConverter.ToInt32(nBuff, 0);
byte[] fBuff = new byte[sizeof(int)];
for (int i = 0; i < len; ++i)
{
stream.Read(fBuff, 0, sizeof(int));
_intCache.Add(BitConverter.ToInt32(fBuff, 0));
}
meshes[l].triangles = _intCache.ToArray();
}
stream.Close();
}
