/// <summary>
/// This initializes a new instance of TerrainQuadTree. It automatically loads all graphics resources,
/// so it must be called at an appropriate time.
/// </summary>
public TerrainQuadTree(Game game, ContentManager content, TerrainQuadTreeParameters parameters)
{
this.game = game;
this.parameters = parameters;
heightMap = content.Load <Texture2D>(parameters.HeightMapName);
layerMap0 = content.Load <Texture2D>(parameters.LayerMap0Name);
layerMap1 = content.Load <Texture2D>(parameters.LayerMap1Name);
layerMap2 = content.Load <Texture2D>(parameters.LayerMap2Name);
grassTexture = content.Load <Texture2D>(parameters.GrassTextureName);
terrainEffect = content.Load <Effect>("Content\\Shaders\\Terrain");
grassEffect = content.Load <Effect>("Content\\Shaders\\Grass");
this.heightMapResolution = heightMap.Width;
grid = new Grid(game, 1.0f / 16.0f, 16);
ComputeNormalMap();
// Due to a bug with XNA 2.0, it keeps the height map data locked after creating the normal map.
// The only solution I found was to set the graphics device's reference to the texture to null.
game.GraphicsDevice.Textures[0] = null;
// About 99% of the preprocessing time is spent simply doing the detailed computations necessary
// to determine the geometric errors of the chunks. Therefore, instead of serializing the entire
// quadtree to speed up initialization, just these values are saved.
if (!parameters.DoPreprocessing)
{
// Load the geometric errors from the chunk data file.
Stream stream = File.Open("Chunks.dat", FileMode.Open);
BinaryFormatter formatter = new BinaryFormatter();
chunkGeometricErrors = (Dictionary <int, float>)formatter.Deserialize(stream);
stream.Close();
}
else
{
chunkGeometricErrors = new Dictionary <int, float>();
}
currentChunkIndex = 0;
ConstructQuadTree();
if (parameters.DoPreprocessing)
{
// Save the geometric errors to the chunk data file.
Stream stream = File.Open("Chunks.dat", FileMode.Create);
BinaryFormatter formatter = new BinaryFormatter();
formatter.Serialize(stream, chunkGeometricErrors);
stream.Close();
}
grassChunk = new GrassChunk(game, this, parameters.GrassChunkDimension, parameters.GrassChunkStarSeparation);
GenerateGrassChunkPositions();
}
/// <summary>
/// This initializes a new instance of TerrainQuadTree. It automatically loads all graphics resources,
/// so it must be called at an appropriate time.
/// </summary>
public TerrainQuadTree(Game game, ContentManager content, TerrainQuadTreeParameters parameters)
{
this.game = game;
this.parameters = parameters;
heightMap = content.Load<Texture2D>(parameters.HeightMapName);
layerMap0 = content.Load<Texture2D>(parameters.LayerMap0Name);
layerMap1 = content.Load<Texture2D>(parameters.LayerMap1Name);
layerMap2 = content.Load<Texture2D>(parameters.LayerMap2Name);
grassTexture = content.Load<Texture2D>(parameters.GrassTextureName);
terrainEffect = content.Load<Effect>("Content\\Shaders\\Terrain");
grassEffect = content.Load<Effect>("Content\\Shaders\\Grass");
this.heightMapResolution = heightMap.Width;
grid = new Grid(game, 1.0f / 16.0f, 16);
ComputeNormalMap();
// Due to a bug with XNA 2.0, it keeps the height map data locked after creating the normal map.
// The only solution I found was to set the graphics device's reference to the texture to null.
game.GraphicsDevice.Textures[0] = null;
// About 99% of the preprocessing time is spent simply doing the detailed computations necessary
// to determine the geometric errors of the chunks. Therefore, instead of serializing the entire
// quadtree to speed up initialization, just these values are saved.
if (!parameters.DoPreprocessing)
{
// Load the geometric errors from the chunk data file.
Stream stream = File.Open("Chunks.dat", FileMode.Open);
BinaryFormatter formatter = new BinaryFormatter();
chunkGeometricErrors = (Dictionary<int, float>)formatter.Deserialize(stream);
stream.Close();
}
else
{
chunkGeometricErrors = new Dictionary<int, float>();
}
currentChunkIndex = 0;
ConstructQuadTree();
if (parameters.DoPreprocessing)
{
// Save the geometric errors to the chunk data file.
Stream stream = File.Open("Chunks.dat", FileMode.Create);
BinaryFormatter formatter = new BinaryFormatter();
formatter.Serialize(stream, chunkGeometricErrors);
stream.Close();
}
grassChunk = new GrassChunk(game, this, parameters.GrassChunkDimension, parameters.GrassChunkStarSeparation);
GenerateGrassChunkPositions();
}
