public QTNode(VertexMultiTextured[,] vertexArray, GraphicsDevice device, Texture2D grassTexture, int maxSize, Effect effect,Texture2D rockTexture, Texture2D snowTexture, Texture2D sandTexture)
{
this.device = device;
this.grassTexture = grassTexture;
this.rockTexture = rockTexture;
this.sandTexture = sandTexture;
this.snowTexture = snowTexture;
this.effect = effect;
width = vertexArray.GetLength(0);
height = vertexArray.GetLength(1);
nodeBoundingBox = TerrainUtils.CreateBoundingBox(vertexArray);
isEndNode = width <= maxSize;
isEndNode &= height <= maxSize;
if (isEndNode)
{
VertexMultiTextured[] vertices = TerrainUtils.Reshape2DTo1D<VertexMultiTextured>(vertexArray);
int[] indices = TerrainUtils.CreateTerrainIndices(width, height);
TerrainUtils.CopyToBuffer(ref nodeVertexBuffer, ref nodeIndexBuffer, vertices, indices, device);
}
else
CreateChildNodes(vertexArray, maxSize);
}
private void CreateChildNodes(VertexMultiTextured[,] vertexArray, int maxSize)
{
VertexMultiTextured[,] ulArray = new VertexMultiTextured[width / 2 + 1, height / 2 + 1];
for (int w = 0; w < width / 2 + 1; w++)
for (int h = 0; h < height / 2 + 1; h++)
ulArray[w, h] = vertexArray[w, h];
nodeUL = new QTNode(ulArray, device, grassTexture, maxSize, effect, rockTexture, snowTexture, sandTexture);
VertexMultiTextured[,] urArray = new VertexMultiTextured[width - (width / 2), height / 2 + 1];
for (int w = 0; w < width - (width / 2); w++)
for (int h = 0; h < height / 2 + 1; h++)
urArray[w, h] = vertexArray[width / 2 + w, h];
nodeUR = new QTNode(urArray, device, grassTexture, maxSize, effect, rockTexture, snowTexture, sandTexture);
VertexMultiTextured[,] llArray = new VertexMultiTextured[width / 2 + 1, height - (height / 2)];
for (int w = 0; w < width / 2 + 1; w++)
for (int h = 0; h < height - (height / 2); h++)
llArray[w, h] = vertexArray[w, height / 2 + h];
nodeLL = new QTNode(llArray, device, grassTexture, maxSize, effect, rockTexture, snowTexture, sandTexture);
VertexMultiTextured[,] lrArray = new VertexMultiTextured[width - (width / 2), height - (height / 2)];
for (int w = 0; w < width - (width / 2); w++)
for (int h = 0; h < height - (height / 2); h++)
lrArray[w, h] = vertexArray[width / 2 + w, height / 2 + h];
nodeLR = new QTNode(lrArray, device, grassTexture, maxSize, effect, rockTexture, snowTexture, sandTexture);
}