public void exportScaleHeightMap()
{
string fileName = string.Format("{0}/{1}.png", Application.dataPath, "heightmap");
int w = terrainData.heightmapWidth;
int h = terrainData.heightmapHeight;
Vector3 meshScale = terrainData.size;
float tRes = Mathf.Pow(2, (int)saveResolution);
meshScale = new Vector3(meshScale.x / (w - 1) * tRes, meshScale.y, meshScale.z / (h - 1) * tRes);
float[,] tData = terrainData.GetHeights(0, 0, w, h);
w = (int)((w - 1) / tRes + 1);
h = (int)((h - 1) / tRes + 1);
Vector3[] tVertices = new Vector3[w * h];
float height = 0;
Texture2D heightMap = new Texture2D(w, h, TextureFormat.BGRA32, true);
Color color = new Color(0, 0, 0, 0);
for (int idy = 0; idy < h; idy++)
{
for (int idx = 0; idx < w; idx++)
{
//tVertices[y * w + x] = Vector3.Scale(meshScale, new Vector3(x, (int)(tData[(int)(x * tRes), (int)(y * tRes)]), y)) + terrainPos;
height = tData[(int)(idy * tRes), (int)(idx * tRes)];
color = new Color(height, height, height, height);
heightMap.SetPixel(idx, idy, color);
}
}
UtilPath.saveTex2File(heightMap, fileName);
}
public void exportHeightMap()
{
string fileName = string.Format("{0}/Resources/Materials/Textures/Terrain/{1}_{2}.png", Application.dataPath, mHeightMapNamePrefix, mTerrainId);
int w = terrainData.heightmapWidth;
int h = terrainData.heightmapHeight;
Vector3 meshScale = terrainData.size;
float[,] tData = terrainData.GetHeights(0, 0, w, h);
//float fx = 0;
//float fy = 0;
Color color = new Color(0, 0, 0, 0);
float height = 0;
Texture2D heightMap = new Texture2D(w, h, TextureFormat.BGRA32, true);
for (int idy = 0; idy < h; ++idy)
{
for (int idx = 0; idx < w; ++idx)
{
height = tData[idy, idx];
// 这个是插值的高度
//fx = ((float)idx) / w;
//fy = ((float)idy) / h;
//height = terrainData.GetInterpolatedHeight(fx, fy);
//height /= meshScale.z;
color = new Color(height, height, height, height);
heightMap.SetPixel(idx, idy, color);
}
}
UtilPath.saveTex2File(heightMap, fileName);
}
public void exportSplatTexture_NotRun()
{
string path = Application.streamingAssetsPath;
int idx = 0;
SplatPrototype splatLayer = null;
Texture2D writeTex = null;
Color color;
for (idx = 0; idx < terrainData.splatPrototypes.Length; ++idx)
{
splatLayer = terrainData.splatPrototypes[idx];
writeTex = new Texture2D(splatLayer.texture.width, splatLayer.texture.height, TextureFormat.RGB24, false);
for (int imageY = 0; imageY < splatLayer.texture.height; ++imageY)
{
for (int imageX = 0; imageX < splatLayer.texture.width; ++imageX)
{
// 这个纹理是不能读写的，需要使用 AssetDatabase.GetAssetPath 读取纹理目录
color = splatLayer.texture.GetPixel(imageX, imageY);
writeTex.SetPixel(imageX, imageY, color);
}
}
UtilPath.saveTex2File(splatLayer.texture, path + "/SplatTextures" + idx + ".png");
}
}
public void exportAlphaMap()
{
float[,,] splatmapData = terrainData.GetAlphamaps(0, 0, terrainData.alphamapWidth, terrainData.alphamapHeight);
int alphamapWidth = terrainData.alphamapWidth;
int alphamapHeight = terrainData.alphamapHeight;
int alphamapLayers = terrainData.alphamapLayers;
int channel = 4;
int channelIdx = 0;
float r = 0;
float g = 0;
float b = 0;
float a = 0;
string fileName = "";
Color color = new Color(0, 0, 0, 0);
Texture2D alphaMap = new Texture2D(alphamapWidth, alphamapHeight, TextureFormat.BGRA32, true);
int imageIdx = 0;
while (channelIdx < alphamapLayers)
{
r = 0;
g = 0;
b = 0;
a = 0;
for (int idy = 0; idy < alphamapHeight; ++idy)
{
for (int idx = 0; idx < alphamapWidth; ++idx)
{
r = splatmapData[idx, alphamapHeight - 1 - idy, channelIdx];
if (channelIdx + 1 < alphamapLayers)
{
g = splatmapData[idx, alphamapHeight - 1 - idy, channelIdx + 1];
}
if (channelIdx + 2 < alphamapLayers)
{
b = splatmapData[idx, alphamapHeight - 1 - idy, channelIdx + 2];
}
if (channelIdx + 3 < alphamapLayers)
{
a = splatmapData[idx, alphamapHeight - 1 - idy, channelIdx + 3];
}
color = new Color(r, g, b, a);
alphaMap.SetPixel(idx, idy, color);
}
}
fileName = string.Format("{0}/{1}_{2}.png", Application.dataPath, "AlphaMap", imageIdx);
UtilPath.saveTex2File(alphaMap, fileName);
imageIdx += 1;
channelIdx += channel;
}
}
// 导出 AlphaMap
public void exportAlphaMap_a()
{
string fileName = "";
Texture2D[] alphamapTextures = terrainData.alphamapTextures;
for (int idx = 0; idx < alphamapTextures.Length; ++idx)
{
fileName = string.Format("{0}/{1}_{2}.png", Application.dataPath, "AlphaMap", idx);
UtilPath.saveTex2File(alphamapTextures[idx], fileName);
}
}
public void exportAlphaTexture()
{
string path = "";
int idx = 0;
while (idx < terrainData.alphamapTextures.Length)
{
path = string.Format("{0}/Resources/Materials/Textures/Terrain/{1}_{2}_{3}.png", Application.dataPath, mAlphaMapNamePrefix, mTerrainId, idx);
UtilPath.saveTex2File(terrainData.alphamapTextures[0], path);
++idx;
}
}
