#ifndef _IMGTEXTUREATLAS_H
#define _IMGTEXTUREATLAS_H

#include <IMGPrerequisites.h>
#include <IMGTexture.h>

namespace IMG {

// Fordward declaration...
class TextureAtlas;

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

class _IMGExport TextureAtlas : public Texture 
{

  private:
    long references;
    friend void boost::intrusive_ptr_add_ref(TextureAtlas * p);
    friend void boost::intrusive_ptr_release(TextureAtlas * p);

  protected:
	 enum CurrentTextureAtlas 
	 {
	     TEXTURE_ATLAS_PING,
         TEXTURE_ATLAS_PONG
     };

     Ogre::String mTextureAtlasName;

	 Ogre::Texture *mTextureAtlasPong;
	
	 Ogre::SceneNode *mTextureAtlasSceneNode;

     std::vector<TexturePtr> mTextureList;

	 unsigned int mCurrentTextureAtlas;

	 bool mFirstUpdate;

  public:

    TextureAtlas();

    virtual ~TextureAtlas();

	void debug();

	void create(Ogre::String fileName, unsigned int width, unsigned int height, Ogre::PixelFormat pixelFormat, Ogre::Camera *camera);

	void update();

	unsigned int getReference();

	void setTextureAtlasSceneNode(Ogre::SceneNode *textureAtlasSceneNode);

	Ogre::SceneNode* getTextureAtlasSceneNode();

	void save(Ogre::String folderName, Ogre::String filename, Ogre::PixelFormat pixelFormat);

	void addTexture(TexturePtr texture);

	TexturePtr getTexture(unsigned int iTexture);

	void removeTexture(unsigned int iTexture);

    void setTextureAtlasName(Ogre::String textureAtlasName);

    Ogre::String getTextureAtlasName();

	unsigned int getNumTextures();

};

// 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(TextureAtlas * p)
  {
    // increment reference count of object *p
    ++(p->references);
  }



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

typedef ::boost::intrusive_ptr<TextureAtlas> TextureAtlasPtr;

}
#endif