public OctreeNode crearOctree(List <TgcMesh> modelos, TgcBoundingAxisAlignBox sceneBounds)
{
var rootNode = new OctreeNode();
var pMax = sceneBounds.PMax;
var pMin = sceneBounds.PMin;
//Calcular punto medio y centro
var midSize = sceneBounds.calculateAxisRadius();
var center = sceneBounds.calculateBoxCenter();
//iniciar generacion recursiva de octree
doSectorOctreeX(rootNode, center, midSize, 0, modelos);
//podar nodos innecesarios
deleteEmptyNodes(rootNode.children);
//eliminar hijos que subdividen sin necesidad
//deleteSameMeshCountChilds(rootNode);
//imprimir por consola el octree
//printDebugOctree(rootNode);
//imprimir estadisticas de debug
//printEstadisticasOctree(rootNode);
return(rootNode);
}
/// <summary>
/// Configura los parámetros de la cámara en funcion del BoundingBox de un modelo
/// </summary>
/// <param name="boundingBox">BoundingBox en base al cual configurar</param>
public void targetObject(TgcBoundingAxisAlignBox boundingBox)
{
CameraCenter = boundingBox.calculateBoxCenter();
var r = boundingBox.calculateBoxRadius();
CameraDistance = 2 * r;
}
/// <summary>
/// Hacer visible las meshes de un nodo si es visible por el Frustum
/// </summary>
private void testChildVisibility(TgcFrustum frustum, QuadtreeNode childNode,
float boxLowerX, float boxLowerY, float boxLowerZ, float boxUpperX, float boxUpperY, float boxUpperZ)
{
//test frustum-box intersection
var caja = new TgcBoundingAxisAlignBox(
new TGCVector3(boxLowerX, boxLowerY, boxLowerZ),
new TGCVector3(boxUpperX, boxUpperY, boxUpperZ));
var distanceToCamera = caja.calculateBoxCenter() - Camera.Position;
if (TGCVector3.Length(distanceToCamera) > 10000 + caja.calculateBoxRadius())
{
return;
}
var c = TgcCollisionUtils.classifyFrustumAABB(frustum, caja);
//complementamente adentro: cargar todos los hijos directamente, sin testeos
if (c == TgcCollisionUtils.FrustumResult.INSIDE)
{
addAllLeafMeshes(childNode);
}
//parte adentro: seguir haciendo testeos con hijos
else if (c == TgcCollisionUtils.FrustumResult.INTERSECT)
{
findVisibleMeshes(frustum, childNode, boxLowerX, boxLowerY, boxLowerZ, boxUpperX, boxUpperY, boxUpperZ);
}
}
public static Parallelepiped fromBounding(TgcBoundingAxisAlignBox b)
{
var box = new Parallelepiped();
var size = b.calculateSize();
var pos = b.calculateBoxCenter();
box.setVertex(size, pos);
return(box);
}
public QuadTreeNode crearQuadTree(List <StaticObject> StaticObjects, TgcBoundingAxisAlignBox sceneBounds)
{
var rootNode = new QuadTreeNode();
//Calcular punto medio y centro
var midSize = sceneBounds.calculateAxisRadius();
var center = sceneBounds.calculateBoxCenter();
//iniciar generacion recursiva de octree
doSectorQuadTreeX(rootNode, center, midSize, 0, StaticObjects);
return(rootNode);
}
public QuadtreeNode crearQuadtree(List <TgcMesh> TgcMeshs, TgcBoundingAxisAlignBox sceneBounds)
{
var rootNode = new QuadtreeNode();
//Calcular punto medio y centro
var midSize = sceneBounds.calculateAxisRadius();
var center = sceneBounds.calculateBoxCenter();
//iniciar generacion recursiva de octree
doSectorQuadtreeX(rootNode, center, midSize, 0, TgcMeshs);
//podar nodos innecesarios
optimizeSectorQuadtree(rootNode.children);
//imprimir por consola el octree
//printDebugQuadtree(rootNode);
//imprimir estadisticas de debug
//printEstadisticasQuadtree(rootNode);
return(rootNode);
}
/// <summary>
/// Distancia entre un objeto y la camara
/// </summary>
public static float distanceFromCameraToObject(MeshCreatorCamera camera, TgcBoundingAxisAlignBox aabb)
{
return(distanceFromCameraToPoint(camera, aabb.calculateBoxCenter()));
}