#ifndef _VisibilityDotSceneManager_H__
#define _VisibilityDotSceneManager_H__

#include <OgreSceneNode.h>
#include <DotSceneManager.h>
#include <OgrePrerequisites.h>
#include "VisibilityManager.h"
#include "OgreSceneNodeHierarchyInterface.h"

namespace Ogre {

/**
	This class extends the dot scene manager, using occlusion queries for 
	visibility culling. 
	@remark the scene manager can operate on Ogre scene descriptions in 
	XML defined by the ".scene" format
*/
class VisibilityDotSceneManager: public DotSceneManager
{
public:
	VisibilityDotSceneManager(GtpVisibility::VisibilityManager *visManager);
	~VisibilityDotSceneManager();

	void _renderVisibleObjects();
	void _findVisibleObjects(Camera* cam, bool onlyShadowCasters);
	void _updateSceneGraph(Camera* cam);

	/** Sets the given option for the SceneManager
		@remarks
		Options are:
		"Algorithm", int *;			
	*/
	virtual bool setOption(const String &, const void *);
	/** Gets the given option for the Scene VisibilityManager.
	    @remarks
		See setOption
	*/
	virtual bool getOption(const String &, void *);

	bool getOptionValues(const String & key, StringVector &refValueList);
	bool getOptionKeys(StringVector &refKeys);

	/** Sets the visibility manager.
		@param visManager the visibility manager
	*/
	void setVisibilityManager(GtpVisibility::VisibilityManager *visManager);
	/** See set.
	*/
	GtpVisibility::VisibilityManager *getVisibilityManager();

protected:

	Ogre::SceneNodeHierarchyInterface *mHierarchyInterface;
	GtpVisibility::VisibilityManager *mVisibilityManager;
};
} // namespace Ogre

#endif // VisibilityDotSceneManager_H