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

extern int **initHistogram(int numTriangles, int numCameras);
extern void deleteHistogram(int **histogram, int numCameras);
extern void printFullHistogram(int **histogram, int numCameras, int numTriangles);
extern void getSWHistogram(int *histogram, GLubyte *pixels);
extern void getSWHistogramWin(int *histogram, GLubyte *pixels, GLfloat min[3], GLfloat max[3], Change *c);
extern void getSWHistoByOcclusionQuery(Mesh *mesh, Color *colors, int *histogram);

extern void resetSWHistogram(int *histogram, int numTriangles);
extern void getBoundingBox(Change *c, GLfloat min[3], GLfloat max[3]);
extern void getWindow(GLfloat min[3], GLfloat max[3], int minw[2], int maxw[2]);
}

#endif