// $Id$
// Category: sector
//
// Class AliMpSectorAreaHPadIterator
// ---------------------------------
// Class, which defines an iterator over the pads 
// inside a given area in a sector in horizontal direction.
//
// Authors: David Guez, Ivana Hrivnacova; IPN Orsay

#ifndef ALI_MP_SECTOR_AREA_H_PAD_ITERATOR_H
#define ALI_MP_SECTOR_AREA_H_PAD_ITERATOR_H

#include "AliMpVPadIterator.h"
#include "AliMpArea.h"
#include "AliMpPad.h"

class AliMpSectorSegmentation;

class AliMpSectorAreaHPadIterator : public AliMpVPadIterator
{
  public:
    AliMpSectorAreaHPadIterator(const AliMpSectorSegmentation* segmentation, 
                                const AliMpArea& area);
    AliMpSectorAreaHPadIterator(const AliMpSectorAreaHPadIterator& src);
    AliMpSectorAreaHPadIterator();
    virtual ~AliMpSectorAreaHPadIterator();

    // operators
    AliMpSectorAreaHPadIterator& 
      operator = (const AliMpSectorAreaHPadIterator& right);

    // methods
    virtual void First();
    virtual void Next();
    virtual Bool_t IsDone() const;
    virtual AliMpPad CurrentItem() const;
    virtual void Invalidate();

  private:
    // private methods
    Bool_t IsValid() const;
    void MoveUp();

    // private data members
    const AliMpSectorSegmentation*  fkSegmentation; // the sector segmentation 
                                    // over which we iterate
    //const AliMpArea  fkArea;         // the area
                                       // (const caused problem with CINT)
    AliMpArea  fkArea;                 // the area
    AliMpPad   fCurrentPad;         // the current pad
    Double_t   fCurrentRowPosition; // the current row position

 ClassDef(AliMpSectorAreaHPadIterator,1) // iterator over motif's pads
};

#endif // ALI_MP_SECTOR_AREA_H_PAD_ITERATOR_H