//--------------------------------------------------------------
#region Creation & Cleanup
//--------------------------------------------------------------
/// <summary>
/// Initializes a new instance of the <see cref="Scene"/> class.
/// </summary>
public Scene()
{
Children = new SceneNodeCollection();
if ((GlobalSettings.ValidationLevelInternal & GlobalSettings.ValidationLevelUserHighExpensive) != 0)
{
SceneChanged += OnSceneChangedValidation;
}
// Create a default collision filter.
var filter = new SceneNodeCollisionFilter(this);
filter.Set(1, 1, false); // Ignore camera vs. camera.
filter.Set(2, 3, false); // Ignore light vs. lens flare.
filter.Set(3, 3, false); // Ignore lens flare vs. lens flare.
filter.Set(3, 4, false); // Ignore lens flare vs. mesh.
filter.Set(4, 4, false); // Ignore mesh vs. mesh.
_filter = filter;
_collisionObjectFilter = new SceneCollisionObjectFilter(filter);
var collisionDetection = new CollisionDetection {
CollisionFilter = null,
};
// DualPartition is better for frustum culling.
_collisionDomain = new CollisionDomain(collisionDetection)
{
BroadPhase = new DualPartition <CollisionObject> {
Filter = _collisionObjectFilter
},
};
}
/// <summary>
/// Initializes a new instance of the <see cref="SceneCollisionObjectFilter"/> class.
/// </summary>
/// <param name="filter">The filter.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="filter"/> is <see langword="null"/>.
/// </exception>
public SceneCollisionObjectFilter(IPairFilter <SceneNode> filter)
{
if (filter == null)
{
throw new ArgumentNullException("filter");
}
_filter = filter;
_filter.Changed += OnChanged;
}
/// <summary>
/// Recursively gets all scene nodes and adds them to the specified collection in depth-first
/// order. (Scene node filtering is applied, EmptyShapes are ignored.)
/// </summary>
/// <param name="node">The root node.</param>
/// <param name="referenceNode">The reference node.</param>
/// <param name="filter">The scene node filter.</param>
/// <param name="list">The collection to which all scene nodes are added.</param>
private static void GetSceneNodes(SceneNode node, SceneNode referenceNode, IPairFilter <SceneNode> filter, List <SceneNode> list)
{
if (node.IsEnabled)
{
if (!(node.Shape is EmptyShape) && filter.Filter(new Pair <SceneNode>(node, referenceNode)))
{
list.Add(node);
}
if (node.Children != null)
{
foreach (var child in node.Children)
{
GetSceneNodes(child, referenceNode, filter, list);
}
}
}
}