public static void SetupTerrainColours()
{
TextureTools.pal.Clear();
//grass medium
TextureTools.AddPaletteColor(new Color32(76, 110, 58, 255));
//grass dark
TextureTools.AddPaletteColor(new Color32(21, 36, 13, 255));
//Water medium
TextureTools.AddPaletteColor(new Color32(8, 41, 52, 255));
//Water dark
TextureTools.AddPaletteColor(new Color32(40, 70, 82, 255));
//Sand medium
TextureTools.AddPaletteColor(new Color32(143, 118, 94, 255));
//Rock medium
TextureTools.AddPaletteColor(new Color32(76, 69, 48, 255));
//snow medium
TextureTools.AddPaletteColor(new Color32(240, 240, 240, 255));
}
public static void ExportZenHeight(GameObject Container, Texture2D HeightMap, string filename, DVector3 TileSize, DVector3 TileLatLon)
{
// You can change that line to provide another MeshFilter
MeshFilter filter = Container.AddComponent <MeshFilter>();
Container.AddComponent <MeshRenderer>();
filter.sharedMesh = new Mesh();
Mesh mesh = filter.sharedMesh;
//mesh.Clear();
float length = 1f;
float width = 1f;
int hx = HeightMap.width;
int hz = HeightMap.height;
_heightData = new float[hx, hz];
for (int xx = 0; xx < hx; xx++)
{
for (int zz = 0; zz < hz; zz++)
{
Color c = HeightMap.GetPixel(xx, zz);
double height = TextureTools.GetAbsoluteHeightFromColor(c);
_heightData[xx, zz] = (float)height; //height values are reversed in unity terrain
}
}
int resX = 21; // 2 minimum
int resZ = 21;
float _relativeScale = 1 / Mathf.Cos(Mathf.Deg2Rad * (float)TileLatLon.x);
#region Vertices
Vector3[] vertices = new Vector3[resX * resZ];
for (float z = 0; z < resZ; z++)
{
// [ -length / 2, length / 2 ]
float zPos = ((float)z / (resZ - 1) - .5f) * length;
for (float x = 0; x < resX; x++)
{
// [ -width / 2, width / 2 ]
float xPos = ((float)x / (resX - 1) - .5f) * width;
//float h = (float)dheights[z*2, x*2];
//if ( x >= resX -2 ) h = (float)dheights[z * 2, HeightMap.height-1];
float h = QueryHeightData(x / (resX - 1), 1 - z / (resZ - 1)) * _relativeScale;
vertices[(int)(x + z * resX)] = new Vector3(xPos, (float)h, zPos);
}
}
#endregion
#region Normales
Vector3[] normales = new Vector3[vertices.Length];
for (int n = 0; n < normales.Length; n++)
{
normales[n] = Vector3.up;
}
#endregion
#region UVs
Vector2[] uvs = new Vector2[vertices.Length];
for (int v = 0; v < resZ; v++)
{
for (int u = 0; u < resX; u++)
{
uvs[u + v * resX] = new Vector2((float)u / (resX - 1), (float)v / (resZ - 1));
}
}
#endregion
#region Triangles
int nbFaces = (resX - 1) * (resZ - 1);
int[] triangles = new int[nbFaces * 6];
int t = 0;
for (int face = 0; face < nbFaces; face++)
{
// Retrieve lower left corner from face ind
int i = face % (resX - 1) + (face / (resZ - 1) * resX);
triangles[t++] = i + resX;
triangles[t++] = i + 1;
triangles[t++] = i;
triangles[t++] = i + resX;
triangles[t++] = i + resX + 1;
triangles[t++] = i + 1;
}
#endregion
mesh.vertices = vertices;
mesh.normals = normales;
mesh.uv = uvs;
mesh.triangles = triangles;
mesh.RecalculateBounds();
Container.transform.localScale = TileSize.ToVector3() + new Vector3(0, 1, 0);
}
/**
* Given an RGB encoded (Massive Format) heightmap, convert it to terrain data and generate a mesh
* DOUBLEPRECISION
*/
static void ExportTerrainFromHeightMap(Texture2D HeightMap, string fileName, SaveResolution saveResolution, SaveFormat saveFormat, Vector3 TileSize)
{
EditorUtility.ClearProgressBar();
//TerrainData td = new TerrainData();
//td.baseMapResolution = 256;
//td.heightmapResolution = 256;
int w = HeightMap.width + 2;
int h = HeightMap.height + 2;
DVector3 size = new DVector3(TileSize.x, (float)EditorGlobals.MaxTerrainHeight, TileSize.z);
double[,] dheights = new double[w, h];
for (int xx = 0; xx < h; xx++)
{
for (int zz = 0; zz < w; zz++)
{
int xxx = Math.Min(xx, HeightMap.width - 1);
int zzz = Math.Min(zz, HeightMap.height - 1);
Color c = HeightMap.GetPixel(xxx, zzz);
//double height = BitmapUtils.MassivePixelToDouble(c) - EditorGlobals.HeightOffset;
double height = TextureTools.MassivePixelToDouble(c);
if (height < EditorGlobals.HeightOffset)
{
height = -20;
}
//range 0 - 1
float fh = (float)(height / EditorGlobals.MaxTerrainHeight);
dheights[xx, zz] = fh; //height values are reversed in unity terrain
}
}
//td.SetHeights(0, 0, fheights);
//ExportOBJ.ExportTerrain(td, fileName, saveResolution, saveFormat);
Vector3 meshScale = size.ToVector3();
int tRes = (int)Mathf.Pow(2, (int)saveResolution);
meshScale = new Vector3(meshScale.x / (w - 1) * tRes, meshScale.y, meshScale.z / (h - 1) * tRes);
Vector2 uvScale = new Vector2(1.0f / (w - 1), 1.0f / (h - 1));
//float[,] tData = terrain.GetHeights(0, 0, w, h);
w = (w - 1) / tRes + 1;
h = (h - 1) / tRes + 1;
Vector3[] tVertices = new Vector3[w * h];
Vector2[] tUV = new Vector2[w * h];
int[] tPolys;
if (saveFormat == SaveFormat.Triangles)
{
tPolys = new int[(w - 1) * (h - 1) * 6];
}
else
{
tPolys = new int[(w - 1) * (h - 1) * 4];
}
// Build vertices and UVs
for (int y = 0; y < h; y++)
{
for (int x = 0; x < w; x++)
{
tVertices[y * w + x] = Vector3.Scale(meshScale, new Vector3(-y, (float)dheights[x * tRes, y * tRes], x)) + terrainPos;
tUV[y * w + x] = Vector2.Scale(new Vector2(x * tRes, y * tRes), uvScale);
}
}
int index = 0;
if (saveFormat == SaveFormat.Triangles)
{
// Build triangle indices: 3 indices into vertex array for each triangle
for (int y = 0; y < h - 1; y++)
{
for (int x = 0; x < w - 1; x++)
{
// For each grid cell output two triangles
tPolys[index++] = (y * w) + x;
tPolys[index++] = ((y + 1) * w) + x;
tPolys[index++] = (y * w) + x + 1;
tPolys[index++] = ((y + 1) * w) + x;
tPolys[index++] = ((y + 1) * w) + x + 1;
tPolys[index++] = (y * w) + x + 1;
}
}
}
else
{
// Build quad indices: 4 indices into vertex array for each quad
for (int y = 0; y < h - 1; y++)
{
for (int x = 0; x < w - 1; x++)
{
// For each grid cell output one quad
tPolys[index++] = (y * w) + x;
tPolys[index++] = ((y + 1) * w) + x;
tPolys[index++] = ((y + 1) * w) + x + 1;
tPolys[index++] = (y * w) + x + 1;
}
}
}
// Export to .obj
StreamWriter sw = new StreamWriter(fileName);
try
{
sw.WriteLine("# Unity terrain OBJ File");
// Write vertices
System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");
counter = tCount = 0;
totalCount = (tVertices.Length * 2 + (saveFormat == SaveFormat.Triangles ? tPolys.Length / 3 : tPolys.Length / 4)) / progressUpdateInterval;
for (int i = 0; i < tVertices.Length; i++)
{
UpdateProgress();
StringBuilder sb = new StringBuilder("v ", 20);
// StringBuilder stuff is done this way because it's faster than using the "{0} {1} {2}"etc. format
// Which is important when you're exporting huge terrains.
sb.Append(tVertices[i].x.ToString()).Append(" ").
Append(tVertices[i].y.ToString()).Append(" ").
Append(tVertices[i].z.ToString());
sw.WriteLine(sb);
}
// Write UVs
for (int i = 0; i < tUV.Length; i++)
{
UpdateProgress();
StringBuilder sb = new StringBuilder("vt ", 22);
sb.Append(tUV[i].x.ToString()).Append(" ").
Append(tUV[i].y.ToString()); ///
sw.WriteLine(sb);
}
if (saveFormat == SaveFormat.Triangles)
{
// Write triangles
for (int i = 0; i < tPolys.Length; i += 3)
{
UpdateProgress();
StringBuilder sb = new StringBuilder("f ", 43);
sb.Append(tPolys[i] + 1).Append("/").Append(tPolys[i] + 1).Append(" ").
Append(tPolys[i + 1] + 1).Append("/").Append(tPolys[i + 1] + 1).Append(" ").
Append(tPolys[i + 2] + 1).Append("/").Append(tPolys[i + 2] + 1);
sw.WriteLine(sb);
}
}
else
{
// Write quads
for (int i = 0; i < tPolys.Length; i += 4)
{
UpdateProgress();
StringBuilder sb = new StringBuilder("f ", 57);
sb.Append(tPolys[i] + 1).Append("/").Append(tPolys[i] + 1).Append(" ").
Append(tPolys[i + 1] + 1).Append("/").Append(tPolys[i + 1] + 1).Append(" ").
Append(tPolys[i + 2] + 1).Append("/").Append(tPolys[i + 2] + 1).Append(" ").
Append(tPolys[i + 3] + 1).Append("/").Append(tPolys[i + 3] + 1);
sw.WriteLine(sb);
}
}
}
catch (Exception err)
{
Debug.Log("Error saving file: " + err.Message);
}
sw.Close();
terrain = null;
EditorUtility.DisplayProgressBar("Saving file to disc.", "This might take a while...", 1f);
EditorWindow.GetWindow <ExportOBJ>().Close();
EditorUtility.ClearProgressBar();
}