#ifndef _VisibilityDummyPreprocessingManager_H__
#define _VisibilityDummyPreprocessingManager_H__

#include "PreprocessingManager.h"


namespace GtpVisibility {
  
  /**
     Implements a dummy interface to the external visibility preprocessing.
  */
class DummyPreprocessingManager : public PreprocessingManager
{
public:


  /** Constructor taking a scene traverser for a specific type of
      hierarchyInterface as argument. 
  */
  DummyPreprocessingManager( HierarchyInterface *hierarchyInterface );
  
  
  /** 
      Export the scene for visibility preprocessing. Exports the hierarchyInterface including
      its bounding boxes + mesh data for occluders. The viewcell data will either be
      supplied directly to the visibility preprocessing standalone module
  */
  virtual bool ExportScene(const string filename);
  
  
  /** 
      Load preprocessed visibility information
  */
  virtual bool LoadPreprocessedData(const string filename);
  
  
protected:

  /** 
      Find viewcells intersecting a spherical neighborhood of a point.
      Returns false if no viewcell was found.
    */
  virtual bool LocateViewCellIds(const Vector3 &center,
				 const float radius,
				 vector<int> *viewCellIds
				 );


  /**
     Add a PVS of the given viewcell to the already evaluated PVS by computing
     a union with visibleNodes and visibleMeshes. Returns the number of added entries.
  */
  virtual int AddViewCellPVS(const int cellID,
			     NodeInfoContainer *visibleNodes,
			     MeshInfoContainer *visibleMeshes);

};

};

#endif // VisibilityPreprocessingManager