public void GenerateTextureMap(uint uiSize, ushort maxHeight, ushort minHeight)
{
if (mTerrainTiles.Count <= 0)
{
return;
}
mTerrainTexture = null;
int tHeightStride = maxHeight / mTerrainTiles.Count;
float[] fBend = new float[mTerrainTiles.Count];
//注意，这里的区域是互相重叠的
int lastHeight = -1;
for (int i = 0; i < mTerrainTiles.Count; ++i)
{
CTerrainTile terrainTile = mTerrainTiles[i];
//lastHeight += 1;
terrainTile.lowHeight = lastHeight + 1;
lastHeight += tHeightStride;
terrainTile.optimalHeight = lastHeight;
terrainTile.highHeight = (lastHeight - terrainTile.lowHeight) + lastHeight;
}
for (int i = 0; i < mTerrainTiles.Count; ++i)
{
CTerrainTile terrainTile = mTerrainTiles[i];
string log = string.Format("Tile Type:{0}|lowHeight:{1}|optimalHeight:{2}|highHeight:{3}",
terrainTile.TileType.ToString(),
terrainTile.lowHeight,
terrainTile.optimalHeight,
terrainTile.highHeight
);
Debug.Log(log);
}
mTerrainTexture = new Texture2D((int)uiSize, (int)uiSize, TextureFormat.RGBA32, false);
CUtility.SetTextureReadble(mTerrainTexture, true);
float fMapRatio = (float)mHeightData.mSize / uiSize;
for (int z = 0; z < uiSize; ++z)
{
for (int x = 0; x < uiSize; ++x)
{
Color totalColor = new Color();
for (int i = 0; i < mTerrainTiles.Count; ++i)
{
CTerrainTile tile = mTerrainTiles[i];
if (tile.mTileTexture == null)
{
continue;
}
int uiTexX = x;
int uiTexZ = z;
//CUtility.SetTextureReadble(tile.mTileTexture, true);
GetTexCoords(tile.mTileTexture, ref uiTexX, ref uiTexZ);
Color color = tile.mTileTexture.GetPixel(uiTexX, uiTexZ);
fBend[i] = RegionPercent(tile.TileType, Limit(InterpolateHeight(x, z, fMapRatio), maxHeight, minHeight));
totalColor.r = Mathf.Min(color.r * fBend[i] + totalColor.r, 1.0f);
totalColor.g = Mathf.Min(color.g * fBend[i] + totalColor.g, 1.0f);
totalColor.b = Mathf.Min(color.b * fBend[i] + totalColor.b, 1.0f);
totalColor.a = 1.0f;
//CUtility.SetTextureReadble(tile.mTileTexture, false);
}//
//输出到纹理上
if (totalColor.r == 0.0f &&
totalColor.g == 0.0f &&
totalColor.b == 0.0f)
{
ushort xHeight = (ushort)(x * fMapRatio);
ushort zHeight = (ushort)(z * fMapRatio);
Debug.Log(string.Format("Color is Black | uiX:{0}|uiZ:{1}|hX:{2}|hZ:{3}|h:{4}", x, z, xHeight, zHeight, GetTrueHeightAtPoint(xHeight, zHeight)));
}
mTerrainTexture.SetPixel(x, z, totalColor);
}
}
//OpenGL纹理的操作
mTerrainTexture.Apply();
CUtility.SetTextureReadble(mTerrainTexture, false);
//string filePath = string.Format("{0}/{1}", Application.dataPath, "Runtime_TerrainTexture.png");
//File.WriteAllBytes(filePath,mTerrainTexture.EncodeToPNG());
//AssetDatabase.ImportAsset(filePath, ImportAssetOptions.ForceSynchronousImport | ImportAssetOptions.ForceUpdate);
//AssetDatabase.SaveAssets();
} //