/****************************************************************************

 This file is part of the GLC-lib library.
 Copyright (C) 2005-2008 Laurent Ribon (laumaya@users.sourceforge.net)
 Version 2.0.0, packaged on July 2010.

 http://glc-lib.sourceforge.net

 GLC-lib is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
 the Free Software Foundation; either version 3 of the License, or
 (at your option) any later version.

 GLC-lib is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public License
 along with GLC-lib; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

 *****************************************************************************/

#ifndef GLC_WORLDHANDLE_H_
#define GLC_WORLDHANDLE_H_

#include "glc_3dviewcollection.h"
#include "glc_structoccurence.h"

#include <QHash>

#include "../glc_config.h"

//////////////////////////////////////////////////////////////////////
//! \class GLC_WorldHandle
/*! \brief GLC_WorldHandle : Handle of shared GLC_World*/
//////////////////////////////////////////////////////////////////////
class GLC_LIB_EXPORT GLC_WorldHandle
{
//////////////////////////////////////////////////////////////////////
/*! @name Constructor / Destructor */
//@{
//////////////////////////////////////////////////////////////////////
public:
	//! The default constructor
	GLC_WorldHandle();

	//! The default destructor
	~GLC_WorldHandle();
//@}

//////////////////////////////////////////////////////////////////////
/*! \name Get Functions*/
//@{
//////////////////////////////////////////////////////////////////////
public:
	//! Return the collection
	inline GLC_3DViewCollection* collection()
	{return &m_Collection;}

	//! Return the number of world associated with this handle
	inline int numberOfWorld() const
	{return m_NumberOfWorld;}

	//! Return true if there is only one world associated with this handle
	inline bool isOrphan() const
	{return m_NumberOfWorld == 0;}

	//! Return true if the specified occurence id is in this world
	inline bool contains(GLC_uint id) const
	{return m_OccurenceHash.contains(id);}

	//! Return the occurence specified by an id
	/*! Id must be a valid identifier*/
	inline GLC_StructOccurence* getOccurence(GLC_uint id) const
	{
		Q_ASSERT(m_OccurenceHash.contains(id));
		return m_OccurenceHash.value(id);
	}

	//! Return the list off occurences
	inline QList<GLC_StructOccurence*> occurences() const
	{return m_OccurenceHash.values();}

	//! Return the number of occurence
	inline int numberOfOccurence() const
	{return m_OccurenceHash.size();}

	//! Return the list of instance
	QList<GLC_StructInstance*> instances() const;

	//! Return the list of Reference
	QList<GLC_StructReference*> references() const;

	//! Return the number of body
	int numberOfBody() const;

	//! Return the world Up vector
	inline GLC_Vector3d upVector() const
	{return m_UpVector;}

//@}

//////////////////////////////////////////////////////////////////////
/*! \name Set Functions*/
//@{
//////////////////////////////////////////////////////////////////////
public:
	//! Increment the number of world
	inline void increment()
	{++m_NumberOfWorld;}

	//! Decrement the number of world
	inline void decrement()
	{--m_NumberOfWorld;}

	//! An Occurence has been added
	void addOccurence(GLC_StructOccurence* pOccurence, bool isSelected= false, GLuint shaderId= 0);

	//! An Occurence has been removed
	void removeOccurence(GLC_StructOccurence* pOccurence);

	//! All Occurence has been removed
	inline void removeAllOccurences()
	{
		m_OccurenceHash.clear();
	}

	//! Set the world Up Vector
	inline void setUpVector(const GLC_Vector3d& vect)
	{m_UpVector= vect;}

	//! Set the attached viewport of this world handle
	inline void setAttachedViewport(GLC_Viewport* pViewport)
	{m_Collection.setAttachedViewport(pViewport);}


//@}

//////////////////////////////////////////////////////////////////////
// private members
//////////////////////////////////////////////////////////////////////
private:
	//! The Collection
	GLC_3DViewCollection m_Collection;

	//! Number of this world
	int m_NumberOfWorld;

	//! The hash table containing struct occurence
	QHash<GLC_uint, GLC_StructOccurence*> m_OccurenceHash;

	//! The world Up Vector
	GLC_Vector3d m_UpVector;
};

#endif /* GLC_WORLDHANDLE_H_ */
