axmol/cocos2dx/effects/CCGrid.h

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Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2009      On-Core
 
http://www.cocos2d-x.org

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****************************************************************************/
#ifndef __EFFECTS_CCGRID_H__
#define __EFFECTS_CCGRID_H__

#include "cocoa/CCObject.h"
#include "base_nodes/CCNode.h"
#include "CCCamera.h"
#include "ccTypes.h"
#include "textures/CCTexture2D.h"
#include "CCDirector.h"
#include "kazmath/mat4.h"

NS_CC_BEGIN

class CCTexture2D;
class CCGrabber;
class CCGLProgram;

/**
 * @addtogroup effects
 * @{
 */

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

    /** whether 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 const ccGridSize& getGridSize(void) { return m_sGridSize; }
    inline void setGridSize(const ccGridSize& gridSize) { m_sGridSize = gridSize; }

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

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

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

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

public:

    /** create one Grid */
    static CCGridBase* create(const ccGridSize& gridSize, CCTexture2D *texture, bool flipped);
    /** create one Grid */
    static CCGridBase* create(const ccGridSize& gridSize);

    void set2DProjection(void);

protected:
    bool m_bActive;
    int  m_nReuseGrid;
    ccGridSize m_sGridSize;
    CCTexture2D *m_pTexture;
    CCPoint m_obStep;
    CCGrabber *m_pGrabber;
    bool m_bIsTextureFlipped;
    CCGLProgram* m_pShaderProgram;
    ccDirectorProjection m_directorProjection;
};

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

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

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

public:
    /** create one Grid */
    static CCGrid3D* create(const ccGridSize& gridSize, CCTexture2D *pTexture, bool bFlipped);
    /** create one Grid */
    static CCGrid3D* create(const 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 CC_DLL CCTiledGrid3D : public CCGridBase
{
public:
    CCTiledGrid3D();
    ~CCTiledGrid3D(void);

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

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

public:

    /** create one Grid */
    static CCTiledGrid3D* create(const ccGridSize& gridSize, CCTexture2D *pTexture, bool bFlipped);
    /** create one Grid */
    static CCTiledGrid3D* create(const ccGridSize& gridSize);
    
protected:
    GLvoid *m_pTexCoordinates;
    GLvoid *m_pVertices;
    GLvoid *m_pOriginalVertices;
    GLushort *m_pIndices;
};

// end of effects group
/// @}

NS_CC_END

#endif // __EFFECTS_CCGRID_H__