ogrepaginglandscapepage.h

使用stl技术,(还没看,是听说的)

/***************************************************************************
	OgrePagingLandScapePage.h  -  description
  -------------------
  begin                : Sat Mar 08 2003
  copyright            : (C) 2003 by Jose A. Milan
  email                : [e-mail]
***************************************************************************/

/***************************************************************************
*                                                                         *
*   This program 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 2 of the    *
*   License, or (at your option) any later version.                       *
*                                                                         *
***************************************************************************/

#ifndef PAGINGLANDSCAPEPAGE_H
#define PAGINGLANDSCAPEPAGE_H

#include "OgrePagingLandScapePrerequisites.h"

namespace Ogre
{

#define PAGE_INSIDE  0x00000001
#define PAGE_CHANGE  0x00000002
#define PAGE_OUTSIDE 0x00000004

class PagingLandScapePage
{
public:
	    /** Sets the appropriate neighbor for this TerrainRenderable.  Neighbors are necessary
    to know when to bridge between LODs.
    */
    void _setNeighbor( Neighbor n, PagingLandScapePage *t )
    {
        mNeighbors[ n ] = t;
    };
    /** Returns the neighbor TerrainRenderable.
    */
    PagingLandScapePage * _getNeighbor( Neighbor n )
    {
        return mNeighbors[ n ];
    };

    PagingLandScapeTile *getTile  (const uint i , const uint j)
    {
        return mTiles[i][j];
    }
    PagingLandScapeTile *getTile  (const Vector3& pos);
	PagingLandScapePage( uint tableX, uint tableZ );

	virtual ~PagingLandScapePage( );

	/** Pre-loads the landscape using parameters int he given in the constructor. */
	void preload( );

	/** Loads the landscape using parameters int he given in the constructor. */
	void load( SceneNode &PagingLandScapeRootNode );

	/** Unloads the landscape data, but doesn磘 destroy the landscape page. */
	void unload( );

	/** Post Unloads the landscape data, but doesn磘 destroy the landscape page. */
	void postUnload( );

	bool isLoaded();

	bool isPreLoaded( );

	/** Returns if the camera is over this landscape page.
	*/
	int isCameraIn( const Vector3 & pos );

	void _Notify(const Vector3 &pos, PagingLandscapeCamera* Cam);

	/// Gets all the patches within an AABB in world coordinates as GeometryData structs
	virtual void getPagingLandScapeRenderOpsInBox(const AxisAlignedBox& box, std::list<RenderOperation>& opList);

protected:

	SceneNode *mPageNode;

	PagingLandScapeTiles mTiles;

	bool mIsLoaded;
	bool mIsPreLoaded;

	uint mTableX;	// Position of this Terrain Page in the Terrain Page Array
	uint mTableZ;

    uint mNumTiles;

	Real mIniX;	//, mEndX;	// Max and Min values of the terrain
	Real mIniZ;	//, mEndZ;

    PagingLandScapePage *mNeighbors[4];

	// Change Zone values
	AxisAlignedBox mBoundsExt;

	AxisAlignedBox mBoundsInt;

};

}

#endif