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

#ifndef __OCEAN_RENDERER__

#define __OCEAN_RENDERER__

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

#include "shader.h"

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

enum

{

    M_VERTEX_ARRAY,

    M_NORMAL_ARRAY_X,

    M_NORMAL_ARRAY_Y,

    M_TEXCOORD_ARRAY,

    INDEX_BUFFER

};

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

class OceanRenderer

{

public:

    OceanRenderer(

        const int n, 

        const float Wx, 

        const float Wy, 

        const int numtex = 0, 

        const int w = 500, 

        const int h = 500);

    ~OceanRenderer();

    void setup();

    void renderHorizon();

    void renderWaterSurface();

    void render();

    void resize(int w, int h);

    void setCameraPosition(const float4 &v) { camera_position = v; }

    void setCameraDirection(const float4 &v) { camera_direction = v; }

    void updateVertexPositions(const float* ht);

    void updateVertexNormals(const float* nx, const float* ny);

    void keyboard(unsigned char key, int x, int y);

    void setExposure(float v)     { exposure = v;    }

    float getExposure(void) const { return exposure; }

    void setSunAngle(float v)     { sun_angle = v;    }

    float getSunAngle(void) const { return sun_angle; }

    GLuint getBufferId(void) const { return buffer; }

    void fenceVertexArray() { glFinishObjectAPPLE(GL_VERTEX_ARRAY, buffer); }

    void debugPrintOut(int);

    void resetBufferData(void);

protected:

    int N;

    int m;

    int width;

    int height;

    float WX;

    float WY;

    int triangle_count;

    GLuint buffer;

    GLuint indexBuffer;

    float *debugData;

    float4 camera_position;

    float4 camera_direction;

    float sun_angle;

    float exposure;

    Shader ocean_shader;

    Shader sky_shader;

};

#endif