public void BorrarModelo(TgcMesh modelo)
{
string[] grillas;
string[] posicion;
int x;
int y;
int z;
grillas = modelo.UserProperties["gid"].Split('+');
foreach (string grilla in grillas)
{
posicion = grilla.Split('.');
x = Convert.ToInt32(posicion[0]);
y = Convert.ToInt32(posicion[1]);
z = Convert.ToInt32(posicion[2]);
GrillaRegularNode nodo = grid[x, y, z];
for (int i = 0; i < nodo.Models.Count; i++)
{
if (nodo.Models[i] == modelo)
{
nodo.Models.RemoveAt(i);
}
}
}
}
/// <summary>
/// Crear meshes debug
/// </summary>
public void createDebugMeshes()
{
debugBoxes = new List <TgcDebugBox>();
for (int x = 0; x < grid.GetUpperBound(0); x++)
{
for (int y = 0; y < grid.GetUpperBound(1); y++)
{
for (int z = 0; z < grid.GetUpperBound(2); z++)
{
GrillaRegularNode node = grid[x, y, z];
TgcDebugBox box = TgcDebugBox.fromExtremes(node.BoundingBox.PMin, node.BoundingBox.PMax, Color.Red);
debugBoxes.Add(box);
}
}
}
}
/// <summary>
/// Activar modelos dentro de celdas visibles
/// </summary>
public void UpdateVisibleMeshes(TgcFrustum frustum)
{
for (int x = 0; x < grid.GetUpperBound(0); x++)
{
for (int y = 0; y < grid.GetUpperBound(1); y++)
{
for (int z = 0; z < grid.GetUpperBound(2); z++)
{
GrillaRegularNode node = grid[x, y, z];
TgcCollisionUtils.FrustumResult r = TgcCollisionUtils.classifyFrustumAABB(frustum, node.BoundingBox);
if (r != TgcCollisionUtils.FrustumResult.OUTSIDE)
{
node.activateCellMeshes();
}
}
}
}
}
/// <summary>
/// Agregar modelos a una celda
/// </summary>
private void addModelsToCell(GrillaRegularNode node, List <TgcMesh> modelos, Vector3 posicion)
{
foreach (TgcMesh mesh in modelos)
{
if (TgcCollisionUtils.testAABBAABB(node.BoundingBox, mesh.BoundingBox))
{
node.Models.Add(mesh);
string gid = posicion.X.ToString()
+ "." + posicion.Y.ToString()
+ "." + posicion.Z.ToString();
if (mesh.UserProperties.ContainsKey("gid") == true)
{
mesh.UserProperties["gid"] = mesh.UserProperties["gid"] + "+" + gid;
}
else
{
mesh.UserProperties.Add("gid", gid);
}
}
}
}
/// <summary>
/// Construye la grilla
/// </summary>
private GrillaRegularNode[, ,] buildGrid(List <TgcMesh> modelos, TgcBoundingBox sceneBounds, Vector3 cellDim)
{
Vector3 sceneSize = sceneBounds.calculateSize();
int gx = (int)FastMath.Ceiling(sceneSize.X / cellDim.X) + 1;
int gy = (int)FastMath.Ceiling(sceneSize.Y / cellDim.Y) + 1;
int gz = (int)FastMath.Ceiling(sceneSize.Z / cellDim.Z) + 1;
GrillaRegularNode[, ,] grid = new GrillaRegularNode[gx, gy, gz];
//Construir grilla
for (int x = 0; x < gx; x++)
{
for (int y = 0; y < gy; y++)
{
for (int z = 0; z < gz; z++)
{
//Crear celda
GrillaRegularNode node = new GrillaRegularNode();
//Crear BoundingBox de celda
Vector3 pMin = new Vector3(sceneBounds.PMin.X + x * cellDim.X, sceneBounds.PMin.Y + y * cellDim.Y, sceneBounds.PMin.Z + z * cellDim.Z);
Vector3 pMax = Vector3.Add(pMin, cellDim);
node.BoundingBox = new TgcBoundingBox(pMin, pMax);
//Cargar modelos en celda
node.Models = new List <TgcMesh>();
addModelsToCell(node, modelos, new Vector3(x, y, z));
grid[x, y, z] = node;
}
}
}
return(grid);
}
/// <summary>
/// Construye la grilla
/// </summary>
private GrillaRegularNode[, ,] buildGrid(List<TgcMesh> modelos, TgcBoundingBox sceneBounds, Vector3 cellDim)
{
Vector3 sceneSize = sceneBounds.calculateSize();
int gx = (int)FastMath.Ceiling(sceneSize.X / cellDim.X) + 1;
int gy = (int)FastMath.Ceiling(sceneSize.Y / cellDim.Y) + 1;
int gz = (int)FastMath.Ceiling(sceneSize.Z / cellDim.Z) + 1;
GrillaRegularNode[, ,] grid = new GrillaRegularNode[gx, gy, gz];
//Construir grilla
for (int x = 0; x < gx; x++)
{
for (int y = 0; y < gy; y++)
{
for (int z = 0; z < gz; z++)
{
//Crear celda
GrillaRegularNode node = new GrillaRegularNode();
//Crear BoundingBox de celda
Vector3 pMin = new Vector3(sceneBounds.PMin.X + x * cellDim.X, sceneBounds.PMin.Y + y * cellDim.Y, sceneBounds.PMin.Z + z * cellDim.Z);
Vector3 pMax = Vector3.Add(pMin, cellDim);
node.BoundingBox = new TgcBoundingBox(pMin, pMax);
//Cargar modelos en celda
node.Models = new List<TgcMesh>();
addModelsToCell(node, modelos, new Vector3(x,y,z));
grid[x, y, z] = node;
}
}
}
return grid;
}
/// <summary>
/// Agregar modelos a una celda
/// </summary>
private void addModelsToCell(GrillaRegularNode node, List<TgcMesh> modelos, Vector3 posicion)
{
foreach (TgcMesh mesh in modelos)
{
if (TgcCollisionUtils.testAABBAABB(node.BoundingBox, mesh.BoundingBox))
{
node.Models.Add(mesh);
string gid = posicion.X.ToString()
+ "." + posicion.Y.ToString()
+ "." + posicion.Z.ToString();
if (mesh.UserProperties.ContainsKey("gid") == true)
mesh.UserProperties["gid"] = mesh.UserProperties["gid"] + "+" + gid;
else
mesh.UserProperties.Add("gid", gid);
}
}
}
