#ifndef _RLEMap_H

#define _RLEMap_H

#include "system.h"

#include "RLEPair.h"

#include <math.h>

/* The RLEMap Class is a run length encoded representation of a bitmap

   The I/O functions defined for this class read and write data from 

   TIFF format files using the Silicon Graphics TIFF library.

*/

class RLEMap{

	public:

	// Constructor, Destructor and copy functions

      	RLEMap();

       ~RLEMap();

	// Selector and Modifier functions

	int & imageLength();

	int & imageWidth();

	inline int pixels_between(int start, int finish, int row_num){

	  return fMapData[row_num]->pixelsBetween(start, finish);

	};

	MapStatus & status();

	void display_intervals(char* color);

        void display_intervals(char* window, double scaleFactor, 

			       char * color);

	ListElement* FindNearHorizDot(int startCol, int startRow, int endRow);

	ListElement* FindNearVertDot(int startCol, int endCol, 

				     int startRow, int endRow);

	// I/O operations.  Read and Write are from/to 2 level TIFF files

	  MapStatus readMap(char * filename);

	MapStatus writeMap(char * filename);

	// Data Access and low level manipulation functions  

	 // Access a row of the Map 

	 // usage: rmap[i] returns row i of the RLEMap.

	 // row performs the same function  

	RLEPairs  * operator [](int i);

	RLEPairs * row(int i);

	 int pixelsInRegion(Point  ul, Point  lr);

	short int grayScale(Point  ul, Point  lr);

	void tilt_and_slant(double, int);

	int deskew(); 

	void tilt(double , int);

	void slant(double, int);

	void tilt_row(int, int, RLEPairs** , double, int);

	RLEPairs ** fMapData;    

	// Array length = fImageLength One list

	// for each row	

	  // prints RLEMap representation for row range

	void printPairs(int startRow, int endRow);  

private:

	// Size and status info

	int fImageLength;

	int fImageWidth;

	MapStatus fStatus;

};

void printMap(RLEMap * map);

void testpixelsBetween(RLEMap * map);

double get_skew(RLEMap*);

#endif