ogrepaginglandscaperenderable.h

使用stl技术,(还没看,是听说的)

/***************************************************************************
  OgrePagingLandScapeRenderable.h  -  description
  -------------------
	begin                : Thu Feb 27 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 PAGINGLANDSCAPERENDERABLE_H
#define PAGINGLANDSCAPERENDERABLE_H


#include "OgrePagingLandScapePrerequisites.h"

namespace Ogre
{

/** Represents a landscape page.
	@remarks
		A LandScapeRenderable represents a page used to render a block of landscape using the procedural terrain approach for LOD.
*/

class PagingLandScapeRenderable : public SimpleRenderable
{
public:

    /** Sets the appropriate neighbor for this TerrainRenderable.  Neighbors are necessary
    to know when to bridge between LODs.
    */
    void _setNeighbor( Neighbor n, PagingLandScapeRenderable *t )
    {
        mNeighbors[ n ] = t;
    };
    /** Returns the neighbor TerrainRenderable.
    */
    PagingLandScapeRenderable * _getNeighbor( Neighbor n )
    {
        return mNeighbors[ n ];
    }
    /// The current LOD level
    uint mRenderLevel;   
    // if a neighbour changes its RenderLevel.
    // get a new Indexbuffer.
    void update();

	/**	Initializes the LandScapeRenderable with the given options and the starting coordinates of this block.
	*/
	PagingLandScapeRenderable();

	~PagingLandScapeRenderable();

	void init( PagingLandScapeTileInfo *info );

	void load();

    void setNeedUpdate (){mNeedReload = true;};

	void release();

	virtual void _notifyCurrentCamera( Camera* cam );

	virtual void _updateRenderQueue(RenderQueue* queue);

	/** Overridden, see Renderable */

	virtual Technique* getTechnique(void) const;

	virtual Real getSquaredViewDepth(const Camera* cam) const;

	virtual Real getBoundingRadius(void) const;

    const bool isLoaded () {return mIsLoaded;};

    const Real getMaxHeight() {return (mBox.getMaximum ()).y;};

protected:

    /// Connection to tiles four neighbours
    PagingLandScapeRenderable *mNeighbors [ 4 ];
    /// Gets the index data for this tile based on current settings
    IndexData* getIndexData(void);

	//unsigned short *mIndex;
	unsigned int mNumIndex;

	bool mInUse;
	bool mIsLoaded;
    bool mInFrustum;
    bool mNeedReload;

	int mMaterialLODIndex;

#if defined(_VisibilityCheck)
	Vector3 mConeNormal;
	float mAngle;
	bool mMustRender;
#endif
	// for loading
	PagingLandScapeTileInfo* mInfo;


};

}

#endif