#ifndef MOSAIC_H
#define MOSAIC_H

// Basically we just have an image, but then we keep an
// Offset, which tells us where to find the coords (0,0) in
// the image. This way we can intelligently add something at
// (10,10) and (100,100) overlaping as they should.

class Mosaic 
{

public:  /*private*/
  float *red;
  float *green;
  float *blue;
  float *alpha;
  
  int xSize, ySize;  // number of elements ; xmax-xmin+1
  int xmin, xmax, ymin, ymax;  // first and last element
  
public:
  Mosaic();
  Mosaic(int xmin, int xmax, int ymin, int ymax);
  
  virtual ~Mosaic();
  
  // Convenience for pixel reference
  inline float &r(long x, long y)
    {
      return *(red+xSize*(y-ymin)+x-xmin);
    }
  inline float &g(long x, long y)
    {
      return *(green+xSize*(y-ymin)+x-xmin);
    }
  inline float &b(long x, long y)
    {
      return *(blue+xSize*(y-ymin)+x-xmin);
    }
  inline float &a(long x, long y)
    {
      return *(alpha+xSize*(y-ymin)+x-xmin);
    }
  
  // Other Routines
  void normalizeAlpha();
  
  
  // Routines from Matlab
  
  void mospad(Mosaic &mos);    // Extend the range of a Mosaic
  void mospad(int xmin, int xmax, int ymin, int ymax);
  
  void mosadd(Mosaic &mos);
  

};



#endif