axmol/cocos2dx/effects/CCGrid.h

/****************************************************************************
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"
#ifdef EMSCRIPTEN
#include "base_nodes/CCGLBufferedNode.h"
#endif // EMSCRIPTEN

NS_CC_BEGIN

class Texture2D;
class Grabber;
class GLProgram;

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

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

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

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

    /** size of the grid */
    inline const Size& getGridSize(void) { return _gridSize; }
    inline void setGridSize(const Size& gridSize) { _gridSize = gridSize; }

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

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

    bool initWithSize(const Size& gridSize, Texture2D *pTexture, bool bFlipped);
    bool initWithSize(const Size& gridSize);

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

public:

    /** create one Grid */
    static GridBase* create(const Size& gridSize, Texture2D *texture, bool flipped);
    /** create one Grid */
    static GridBase* create(const Size& gridSize);

    void set2DProjection(void);

protected:
    bool _active;
    int  _reuseGrid;
    Size _gridSize;
    Texture2D *_texture;
    Point _step;
    Grabber *_grabber;
    bool _isTextureFlipped;
    GLProgram* _shaderProgram;
    ccDirectorProjection _directorProjection;
};

/**
 Grid3D is a 3D grid implementation. Each vertex has 3 dimensions: x,y,z
 */
class CC_DLL Grid3D : public GridBase
#ifdef EMSCRIPTEN
, public GLBufferedNode
#endif // EMSCRIPTEN
{
public:
    Grid3D();
    ~Grid3D(void);

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

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

public:
    /** create one Grid */
    static Grid3D* create(const Size& gridSize, Texture2D *pTexture, bool bFlipped);
    /** create one Grid */
    static Grid3D* create(const Size& gridSize);
    
protected:
    GLvoid *_texCoordinates;
    GLvoid *_vertices;
    GLvoid *_originalVertices;
    GLushort *_indices;
};

/**
 TiledGrid3D is a 3D grid implementation. It differs from Grid3D in that
 the tiles can be separated from the grid.
*/
class CC_DLL TiledGrid3D : public GridBase
#ifdef EMSCRIPTEN
, public GLBufferedNode
#endif // EMSCRIPTEN
{
public:
    TiledGrid3D();
    ~TiledGrid3D(void);

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

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

public:

    /** create one Grid */
    static TiledGrid3D* create(const Size& gridSize, Texture2D *pTexture, bool bFlipped);
    /** create one Grid */
    static TiledGrid3D* create(const Size& gridSize);
    
protected:
    GLvoid *_texCoordinates;
    GLvoid *_vertices;
    GLvoid *_originalVertices;
    GLushort *_indices;
};

// end of effects group
/// @}

NS_CC_END

#endif // __EFFECTS_CCGRID_H__