/// <summary>
/// Agregar modelos a una celda
/// </summary>
private void addModelsToCell(GrillaRegularNode node, List <TgcMesh> modelos)
{
foreach (TgcMesh mesh in modelos)
{
if (TgcCollisionUtils.testAABBAABB(node.BoundingBox, mesh.BoundingBox))
{
node.Models.Add(mesh);
}
}
}
/// <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>
private void findVisibleMeshes(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>
/// 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);
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);
grid[x, y, z] = node;
}
}
}
return(grid);
}
/// <summary>
/// Agregar modelos a una celda
/// </summary>
private void addModelsToCell(GrillaRegularNode node, List<TgcMesh> modelos)
{
foreach (TgcMesh mesh in modelos)
{
if (TgcCollisionUtils.testAABBAABB(node.BoundingBox, mesh.BoundingBox))
{
node.Models.Add(mesh);
}
}
}
