#ifndef _SceneNodeHierarchyInterface_H__
#define _SceneNodeHierarchyInterface_H__

#include "OgrePlatformHierarchyInterface.h"
#include "VisibilityInfo.h"
#include "QueryManager.h"


namespace Ogre {

/**
	This class implements the hierarchy interface for the Ogre scene node hierarchy.
*/
class SceneNodeHierarchyInterface: public PlatformHierarchyInterface
{
public:
	/** Construction taking the current scene manager and the current 
		rendersystem as argument
		@param sm current scene manager
		@param rsys current render system 
	*/
	SceneNodeHierarchyInterface(SceneManager *sm, RenderSystem *rsys);
	
	bool IsLeaf(GtpVisibility::HierarchyNode *node) const;
	
	void TraverseNode(GtpVisibility::HierarchyNode *node);
	void RenderNode(GtpVisibility::HierarchyNode *node);
	void PullUpVisibility(GtpVisibility::HierarchyNode *node) const;
	bool HasGeometry(GtpVisibility::HierarchyNode *node) const;
	float GetSquaredDistance(GtpVisibility::HierarchyNode *node) const;

	void SetNodeVisible(GtpVisibility::HierarchyNode *node, const bool visible) const;
	void SetLastVisited(GtpVisibility::HierarchyNode *node, 
						const unsigned int frameId) const;

	bool IsNodeVisible(GtpVisibility::HierarchyNode *node) const;
	unsigned int LastVisited(GtpVisibility::HierarchyNode *node) const;

	AxisAlignedBox *GetBoundingBox(GtpVisibility::HierarchyNode *node);

	void VisualizeCulledNode(GtpVisibility::HierarchyNode *node, 
							GtpVisibility::CullingType type) const;
	
	void GetNodeGeometryList(GtpVisibility::HierarchyNode *node,	
					 GtpVisibility::GeometryVector *geometryList, 
					 bool includeChildren);

};

} // namespace Ogre
#endif // SceneNodeHierarchyInterface_H