#ifndef __histogram_h_
#define __histogram_h_

#include "GL/glut.h"

#include "color.h"

#define HISTOGRAM_SIZE  256 // Must be a power of 2

namespace	VMI
{

extern void getSubHistogram(GLuint subHistoGram[][4]);
extern void copySubHistogram(Color *colors, GLuint *histogram, GLuint begin, GLuint end, GLuint subHistoGram[][4]);
extern void printHistogram(GLuint histoGram[][4]);
extern void plotHistogram(GLuint histoGram[][4]);

extern GLuint **initHistogram(GLuint numTriangles, GLuint numCameras);
extern void deleteHistogram(GLuint **histogram, GLuint numCameras);
extern void printFullHistogram(GLuint **histogram, GLuint numCameras, GLuint numTriangles);
extern void getSWHistogram(GLuint *histogram, GLubyte *pixels);
extern void getSWHistoByOcclusionQuery(Mesh *mesh, Color *colors, GLuint *histogram);

extern void resetSWHistogram(GLuint *histogram, GLuint numTriangles);

}

#endif