#ifndef __buffers_h_
#define __buffers_h_

#include "GL/glut.h"

#include "color.h"
#include "mesh.h"
#include "change.h"

namespace	VMI
{

typedef struct _VertexIL {
    float tx, ty;       // texture coordinates
    GLubyte r, g, b, a; // color
    float x, y, z;      // position coordinates
} VertexIL;

typedef struct _Vertex_{
    float x, y, z;    // position
} Vertex_;

extern VertexIL *saveVertexBuffer(Change *c, Vertex_ *verts, Color *cols);
extern void loadVertexBuffer(VertexIL *src, Change *c, Vertex_ *verts, Color *cols);
extern VertexIL *saveVertexBufferGPU(Change *c);
extern void loadVertexBufferGPU(VertexIL *src, Change *c);

extern VertexIL *setupInterleave(Mesh *mesh, Color *colors);
extern void setupVertexArray(Mesh *mesh, Color *colors);
extern void updateVertexArray(Mesh *mesh, Change *c, Vertex_ *verts, Color *cols);
extern void setupVertexBufferObjects(Mesh *mesh, Color *colors);
extern void updateVertexBufferObjects(Mesh *mesh, Change *c);
extern void printInterleave(VertexIL *interleave, int num);
extern void updateAllColorInterleave(VertexIL *interleave, int num, Color *colors);
extern void updateColorInterleave(VertexIL *interleave, int num, Color *colors, int begin, int end);
extern void fillColorInterleave(VertexIL *interleave, int num, int begin, int end, GLubyte color);

}

#endif