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
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#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; }

		/** 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__