protected override void LoadContent()
{
device = graphics.GraphicsDevice;
cCross = new CoordCross(device);
Texture2D grassTexture = Content.Load <Texture2D>("grass");
Texture2D heightMap = Content.Load <Texture2D>("heightmap");
int width = heightMap.Width;
int height = heightMap.Height;
float[,] heightData = TerrainUtils.LoadHeightData(heightMap);
VertexPositionNormalTexture[] vertices = TerrainUtils.CreateTerrainVertices(heightData);
int[] indices = TerrainUtils.CreateTerrainIndices(width, height);
vertices = TerrainUtils.GenerateNormalsForTriangleStrip(vertices, indices);
VertexPositionNormalTexture[,] vertexArray = Reshape1Dto2D <VertexPositionNormalTexture>(vertices, width, height);
rootNode = new QTNode(vertexArray, device, grassTexture, 64);
}
public QTNode(VertexPositionNormalTexture[,] vertexArray, GraphicsDevice device, Texture2D grassTexture, int maxSize)
{
this.device = device;
this.grassTexture = grassTexture;
basicEffect = new BasicEffect(device, null);
width = vertexArray.GetLength(0);
height = vertexArray.GetLength(1);
nodeBoundingBox = CreateBoundingBox(vertexArray);
isEndNode = width <= maxSize;
isEndNode &= height <= maxSize;
if (isEndNode)
{
VertexPositionNormalTexture[] vertices = Reshape2Dto1D <VertexPositionNormalTexture>(vertexArray);
int[] indices = TerrainUtils.CreateTerrainIndices(width, height);
TerrainUtils.CreateBuffers(vertices, indices, out nodeVertexBuffer, out nodeIndexBuffer, device);
}
else
{
CreateChildNodes(vertexArray, maxSize);
}
}