public void AddNeighs(Triangle lNeigh, Triangle rNeigh, Triangle bNeigh)
{
this.lNeigh = lNeigh;
this.rNeigh = rNeigh;
this.bNeigh = bNeigh;
if (lChild != null)
{
Triangle bNeighRightChild = null;
Triangle bNeighLeftChild = null;
Triangle lNeighRightChild = null;
Triangle rNeighLeftChild = null;
if (bNeigh != null)
{
bNeighLeftChild = bNeigh.lChild;
bNeighRightChild = bNeigh.rChild;
}
if (lNeigh != null)
lNeighRightChild = lNeigh.rChild;
if (rNeigh != null)
rNeighLeftChild = rNeigh.lChild;
lChild.AddNeighs(rChild, bNeighRightChild, lNeighRightChild);
rChild.AddNeighs(bNeighLeftChild, lChild, rNeighLeftChild);
}
}
public Triangle(Triangle parent, Vector2 tPoint, Vector2 lPoint, Vector2 rPoint, float[,] heightData)
{
int resolution = heightData.GetLength(0);
tInd = (int)(tPoint.X + tPoint.Y * resolution);
lInd = (int)(lPoint.X + lPoint.Y * resolution);
rInd = (int)(rPoint.X + rPoint.Y * resolution);
lPos = new Vector3(lPoint.X, heightData[(int)lPoint.X, (int)lPoint.Y], lPoint.Y);
Vector2 center = (lPoint + rPoint) / 2;
centerPos = new Vector3(center.X, heightData[(int)center.X, (int)center.Y], center.Y);
this.parent = parent;
if (Vector2.Distance(lPoint, tPoint) > 1)
{
lChild = new Triangle(this, center, tPoint, lPoint, heightData);
rChild = new Triangle(this, center, rPoint, tPoint, heightData);
}
}
protected override void LoadContent()
{
//Loading textures and effects from content
terrainMap = Game.Content.Load<Texture2D>("Models/Terrain/Heightmaps/heightmap4");
grassTexture = Game.Content.Load<Texture2D>("Models/Terrain/Textures/grass");
sandTexture = Game.Content.Load<Texture2D>("Models/Terrain/Textures/sand");
snowTexture = Game.Content.Load<Texture2D>("Models/Terrain/Textures/snow");
rockTexture = Game.Content.Load<Texture2D>("Models/Terrain/Textures/rock");
TerrainUtils.LoadHeightData(terrainMap, ref heightData, ref width, ref height);
TerrainUtils.SetUpVertices(heightData, ref vertices, width, height);
indices = TerrainUtils.CreateTerrainIndices(width, height);
vertices = TerrainUtils.GenerateNormalsForTriangleStrip(vertices, indices);
VertexMultiTextured[,] vertexArray = TerrainUtils.Reshape1DTo2D<VertexMultiTextured>(vertices, width, height);
rootNode = new QTNode(vertexArray, device, grassTexture, 64, effect, rockTexture, snowTexture, sandTexture);
TerrainUtils.CopyToBuffer(ref vertexBuffer, ref indexBuffer, vertices, indices, device);
int terrainSize = 32;
Triangle leftTriangle = new Triangle(null, new Vector2(0, 0), new Vector2(terrainSize, 0), new Vector2(0, terrainSize), heightData);
Triangle rightTriangle = new Triangle(null, new Vector2(terrainSize, terrainSize), new Vector2(0, terrainSize), new Vector2(terrainSize, 0), heightData);
leftTriangle.AddNeighs(null, null, rightTriangle);
rightTriangle.AddNeighs(null, null, leftTriangle);
triangleList = new List<Triangle>();
triangleList.Add(leftTriangle);
triangleList.Add(rightTriangle);
indicesList = new List<int>();
foreach (Triangle t in triangleList)
t.AddIndices(ref indicesList);
dynamicIndexBuffer = new DynamicIndexBuffer(device, typeof(int), indicesList.Count, BufferUsage.WriteOnly);
dynamicIndexBuffer.SetData(indicesList.ToArray(), 0, indicesList.Count, SetDataOptions.Discard);
dynamicIndexBuffer.ContentLost += dynamicIndexBuffer_ContentLost;
}
