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////////////////////////////////////////////////////////////////////////////////////////////////////

#ifndef __GRID_MESH__

#define __GRID_MESH__

#include "compute_types.h"

#include <OpenGL/OpenGL.h>

////////////////////////////////////////////////////////////////////////////////

class GridMesh

{

public:

    GridMesh();

    ~GridMesh();

    bool setup(uint uiCountX, uint uiCountY, 

               float fX0, float fX1, 

               float fY0, float fY1, 

               bool bVertical = false);

    bool setup(uint uiCountX, uint uiCountY, 

               float fA0, float fA1,

               float fRadialAngle, 

               bool bVertical = false);

    void render(GLenum eElementType = GL_TRIANGLE_STRIP, bool bUseVBO = true);

    unsigned int getTriangleCount();

    bool createIndexData(uint uiCountX, uint uiCountY);

    uint getIndexCount()            { return m_uiIndexCount;}

private:

    void createVBO();

    void destroyVBO();

    void addVertex(float x, float y, float z);

    void destroy();

    uint m_uiVertexBufferId;

    float* m_afVertexData; 

    uint m_uiVertexCount;    

    uint m_uiIndexBufferId;

    unsigned short* m_ausIndexData;  

    uint m_uiIndexCount;       

    uint m_uiFaceCount; 

};

////////////////////////////////////////////////////////////////////////////////

#endif