#ifndef _VisibilityInfo_H__
#define _VisibilityInfo_H__

#include <vector>

#include "VisibilityMesh.h"
#include "HierarchyInterface.h"

namespace GtpVisibility {
  
/** Class storing visibility information.
*/
class VisibilityInfo
{
public:
	VisibilityInfo(const int visiblePixels, const int projectedPixels);

	int GetVisiblePixels() const;
	int GetProjectedPixels() const;

	void SetVisiblePixels(int vis);
	void SetProjectedPixels(int vis);
	
	/** Computes ratio of visible to projected pixels. */
	float ComputeRelativeVisibility();

	/** Adds visibility to current visibility information.
	*/
	void AddVisibility(const VisibilityInfo &info);
	/** Adds visibility to current visibility information.
	*/
	void AddVisibility(const int visiblePixels, const int vrojectedPixels);

protected:
	/** number of visible pixels. 
	*/
    int mVisiblePixels;
	/** number of projected pixels 
	*/
	int mProjectedPixels;
};
/** Class storing the visibility information of a hierarchy node. 
*/
class NodeInfo: public VisibilityInfo
{
public:
    NodeInfo(HierarchyNode *node, const int visiblePixels, const int projectedPixels);

	void SetNode(HierarchyNode *node);
	HierarchyNode *GetNode() const;
	//bool operator<(const NodeInfo& rhs) const {return mNode < rhs.mNode;}

protected:

    /** Pointer to the hierarchy nnode.
	*/
    HierarchyNode *mNode;
};
  
/** Class storing the visibility information of a mesh.
*/
class MeshInfo: public VisibilityInfo
{
public:
	MeshInfo(Mesh *mesh, const int visiblePixels, const int projectedPixels);

	Mesh *GetMesh() const;
	void SetMesh(Mesh *mesh);

	//bool operator<(const MeshInfo& rhs) const {return mMesh < rhs.mMesh;}
	//bool operator==(const MeshInfo& rhs) const {return mMesh == rhs.mMesh;}
	
protected:

    /** Pointer to the mesh.
	*/
    Mesh *mMesh;
};

/** Class storing the visibility information of a patch, i.e., parts of meshes having the same material
	properties.
*/
class PatchInfo: public VisibilityInfo
{
public:
	PatchInfo(Patch *Patch, const int visiblePixels, const int projectedPixels);

	Patch *GetPatch() const;
	void SetPatch(Patch *patch);
	
protected:

    /** Pointer to the patch.
	*/
    Patch *mPatch;
};

//TODO: this define shall be replaced by template typedef
#define InfoContainer std::vector
//#define InfoContainer std::set
};


#endif