#ifndef _BITMAP_H

#define _BITMAP_H

#include "system.h"

/** A BitMap representation stores image in an array of unsigned character

    arrays.  There is one uchar array per row.  Each bit of the uchar 

    represents a pixel.

***/

class RLEMap;

class Point;

class BitMap;

extern void byteprint(char d);

extern void bitprint(char d, int x);

class BitMap{

 public:

  friend MapStatus convertMap(RLEMap *,BitMap*,Point,Point);

  friend MapStatus convertMap(BitMap *,RLEMap*,Point,Point);

  BitMap();

  ~BitMap();

  int & imageLength() 

    {return fImageLength;};

  int & imageWidth()

    {return fImageWidth;};

  readBit(Point  p);

  MapStatus & status()

    {return fStatus; };

  uchar * row(int i);         // returns a pointer to row i

  // I/O operations.  readMap and writeMap are from/to 2 level TIFF files

  MapStatus readMap(char * filename);

  MapStatus writeMap(char * filename);   // not done

  // Write out BitMap format for TCL/TK display

  MapStatus writeTclMap(char * filename, Point  ul, Point  lr, int scaledown);

  // Detect skew Angle 

  Angle skewAngle();

  //Rotate the map designated angle.  

  MapStatus rotateMap(Angle angl); 

  // Return a ratio of black pixels to white pixels

  // scaled to 255 0 = all white 255=all black

  short int grayScale(Point  ul, Point  lr);

  // number of black pixels in bounding box

  const int BitMap::pixelsInRegion( Point ul, Point lr);

  int BitMap::minThickness(Point  ul,  Point  lr);

private:

	int fImageWidth;

	int fImageLength;

	MapStatus fStatus;

	uchar ** fMapData;

} ;

#endif