#ifndef _BBCBILLBOARDCLUSTERDATA_H
#define _BBCBILLBOARDCLUSTERDATA_H

#include <BBCEntityCluster.h>

namespace BBC {

// Fordward declaration...
class BillboardClusterData;

namespace boost
{
    void intrusive_ptr_add_ref(BillboardClusterData * p);
    void intrusive_ptr_release(BillboardClusterData * p);
};

class _BBCExport BillboardClusterData 
{
private:
    long references;
    friend void boost::intrusive_ptr_add_ref(BillboardClusterData * p);
    friend void boost::intrusive_ptr_release(BillboardClusterData * p);

  public:
    BillboardClusterData();

    virtual ~BillboardClusterData();

	void setNormal(Ogre::Vector3 value);

	Ogre::Vector3 getNormal();

	void setD(float value);

	float getD();

    EntityClusterPtr getEntityCluster();

	void setEntityCluster(EntityClusterPtr value);

	virtual void readBillboardClusterData(TiXmlNode *parentNode, int iBillboardGroup);

	virtual void writeBillboardClusterData(TiXmlNode *parentNode, int iBillboardGroup);

	virtual void generateBillboardBoundingQuad();

	unsigned int getNumUVMapGroups();

	Ogre::Vector3 getQuadTopLeftCorner();

	Ogre::Vector3 getQuadTopRightCorner();

	Ogre::Vector3 getQuadBottomLeftCorner();

	Ogre::Vector3 getQuadBottomRightCorner();

	void setQuadTopLeftCorner(Ogre::Vector3 topLeft);

	void setQuadTopRightCorner(Ogre::Vector3 topRight);

	void setQuadBottomLeftCorner(Ogre::Vector3 bottomLeft);

	void setQuadBottomRightCorner(Ogre::Vector3 bottomRight);

	Ogre::Vector3 getAxisX();

	Ogre::Vector3 getAxisY();

	Ogre::Vector3 getAxisZ();

	void setAxisX(Ogre::Vector3 axisX);

	void setAxisY(Ogre::Vector3 axisY);

	void setAxisZ(Ogre::Vector3 axisZ);

	Ogre::Vector2 getBillboardUVMapMin(unsigned int iBillboardGroup);

	void addBillboardUVMapMin(Ogre::Vector2 minVec);

	void removeBillboardUVMapMin(unsigned int iBillboardGroup);

	Ogre::Vector2 getBillboardUVMapMax(unsigned int iBillboardGroup);

	void addBillboardUVMapMax(Ogre::Vector2 maxVec);

	void removeBillboardUVMapMax(unsigned int iBillboardGroup);


protected:
	EntityClusterPtr mEntityCluster;
	
	Ogre::Vector3 mAxisX;

	Ogre::Vector3 mAxisY;

	Ogre::Vector3 mAxisZ;

    enum BoundingQuadVertex {
        QUAD_TOP_LEFT,
        QUAD_TOP_RIGHT,
        QUAD_BOTTOM_RIGHT,
        QUAD_BOTTOM_LEFT
    };

	Ogre::Vector3 mBillboardCorners[4];

	Ogre::Vector3 mNormal;

	std::vector<Ogre::Vector2> mGroupedBillboardUVMapMinList;

	std::vector<Ogre::Vector2> mGroupedBillboardUVMapMaxList;

	float mD;

};

// class specific addref/release implementation
// the two function overloads must be in the boost namespace on most compilers:
namespace boost
{
 inline void intrusive_ptr_add_ref(BillboardClusterData * p)
  {
    // increment reference count of object *p
    ++(p->references);
  }



 inline void intrusive_ptr_release(BillboardClusterData * p)
  {
   // decrement reference count, and delete object when reference count reaches 0
   if (--(p->references) == 0)
     delete p;
  } 
} // namespace boost

typedef ::boost::intrusive_ptr<BillboardClusterData> BillboardClusterDataPtr;

}
#endif