axmol/cocos2dx/effects/CCGrid.h

/****************************************************************************
Copyright (c) 2010 cocos2d-x.org

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
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****************************************************************************/
#ifndef __EFFECTS_CCGRID_H__
#define __EFFECTS_CCGRID_H__

#include "NSObject.h"
#include "CCNode.h"
#include "CCCamera.h"
#include "ccTypes.h"
#include "CCTexture2D.h"

namespace cocos2d
{
	class CCTexture2D;
	class CCGrabber;

	/** Base class for other
	*/
	class CCGridBase : public NSObject
	{
	public:
		virtual ~CCGridBase(void);

		/** wheter or not the grid is active */
		inline bool isActive(void) { return m_bActive; }
		void setActive(bool bActive);

		/** number of times that the grid will be reused */
		inline int getReuseGrid(void) { return m_nReuseGrid; }
		inline void setReuseGrid(int nReuseGrid) { m_nReuseGrid = nReuseGrid; }

		/** size of the grid */
		inline ccGridSize getGridSize(void) { return m_sGridSize; }
		inline void setGridSize(ccGridSize gridSize) { m_sGridSize = gridSize; }

		/** pixels between the grids */
		inline CGPoint getStep(void) { return m_obStep; }
		inline void setStep(CGPoint step) { m_obStep = step; }

		/** texture used, retain */
// 		inline CCTexture2D* getTexture(void) { return m_pTexture; }
// 		inline void setTexture(CCTexture2D *pTexture)
// 		{
// 			CCX_SAFE_RELEASE(m_pTexture);
// 			m_pTexture = pTexture;
// 			CCX_SAFE_RETAIN(m_pTexture);
// 		}

		/** is texture flipped */
		inline bool isTextureFlipped(void) { return m_bIsTextureFlipped; }
		void setIsTextureFlipped(bool bFlipped);

		bool initWithSize(ccGridSize gridSize, CCTexture2D *pTexture, bool bFlipped);
		bool initWithSize(ccGridSize gridSize);

		void beforeDraw(void);
		void afterDraw(CCNode *pTarget);
		virtual void blit(void);
		virtual void reuse(void);
		virtual void calculateVertexPoints(void);

	public:
		static CCGridBase* gridWithSize(ccGridSize gridSize, CCTexture2D *texture, bool flipped);
		static CCGridBase* gridWithSize(ccGridSize gridSize);
		void set2DProjection(void);
		void set3DProjection(void);

	protected:
		void applyLandscape(void);
		
	protected:
		bool m_bActive;
		int  m_nReuseGrid;
		ccGridSize m_sGridSize;
		CCTexture2D *m_pTexture;
		CGPoint m_obStep;
		CCGrabber *m_pGrabber;
		bool m_bIsTextureFlipped;
	};

	/**
	 CCGrid3D is a 3D grid implementation. Each vertex has 3 dimensions: x,y,z
	 */
	class CCGrid3D : public CCGridBase
	{
	public:
        ~CCGrid3D(void);

		/** returns the vertex at a given position */
		ccVertex3F vertex(ccGridSize pos);
		/** returns the original (non-transformed) vertex at a given position */
		ccVertex3F originalVertex(ccGridSize pos);
		/** sets a new vertex at a given position */
		void setVertex(ccGridSize pos, ccVertex3F vertex);

		virtual void blit(void);
		virtual void reuse(void);
		virtual void calculateVertexPoints(void);

	public:
		static CCGrid3D* gridWithSize(ccGridSize gridSize, CCTexture2D *pTexture, bool bFlipped);
		static CCGrid3D* gridWithSize(ccGridSize gridSize);

	protected:
		GLvoid *m_pTexCoordinates;
		GLvoid *m_pVertices;
		GLvoid *m_pOriginalVertices;
		GLushort *m_pIndices;
	};

	/**
	 CCTiledGrid3D is a 3D grid implementation. It differs from Grid3D in that
	 the tiles can be separated from the grid.
	*/
	class CCTiledGrid3D : public CCGridBase
	{
	public:
		~CCTiledGrid3D(void);

		/** returns the tile at the given position */
		ccQuad3 tile(ccGridSize pos);
		/** returns the original tile (untransformed) at the given position */
		ccQuad3 originalTile(ccGridSize pos);
		/** sets a new tile */
		void setTile(ccGridSize pos, ccQuad3 coords);

		virtual void blit(void);
		virtual void reuse(void);
		virtual void calculateVertexPoints(void);

	public:
		static CCTiledGrid3D* gridWithSize(ccGridSize gridSize, CCTexture2D *pTexture, bool bFlipped);
		static CCTiledGrid3D* gridWithSize(ccGridSize gridSize);

	protected:
		GLvoid *m_pTexCoordinates;
		GLvoid *m_pVertices;
		GLvoid *m_pOriginalVertices;
		GLushort *m_pIndices;
	};
}

#endif // __EFFECTS_CCGRID_H__