#ifndef ALITRDTRACKINGSECTOR_H
#define ALITRDTRACKINGSECTOR_H

/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

/* $Id: AliTRDtrackingSector.h 22646 2007-11-29 18:13:40Z cblume $ */

////////////////////////////////////////////////////////////////////////////
//                                                                        //
// Data container for one TRD supermodule                                 // 
//                                                                        // 
// Authors:                                                               //
//                                                                        //
//    Marian Ivanov <M.Ivanov@gsi.de>                                     //
//    Alex Bercuci <A.Bercuci@gsi.de>                                     //
//                                                                        //
////////////////////////////////////////////////////////////////////////////

#ifndef ROOT_Rtypes
#include "Rtypes.h"
#endif

class AliTRDtrackingChamber;
class AliTRDgeometry;

class AliTRDtrackingSector 
{

public:
	enum{
		kNChambersSector   = 30
		, kNplane          = 6
		, kTrackingSectors = 18
	};
	
	AliTRDtrackingSector();
	AliTRDtrackingSector(AliTRDgeometry* geo, Int_t gs);
	AliTRDtrackingSector(const AliTRDtrackingSector &/*t*/);
	virtual ~AliTRDtrackingSector();
	
	AliTRDtrackingSector &operator=(const AliTRDtrackingSector &/*t*/) { return *this; }
	
  void     Clear(const Option_t *opt = 0x0);
	Int_t    GetNChambers() const             { return fN; }
	Double_t GetX(Int_t pl) const                  { return pl >=0 && pl < kNplane ? fX0[pl] : 0.; }
	AliTRDtrackingChamber* GetChamber(Int_t i) const  { return i>=0 && i < fN ? fChamber[i] : 0x0;  }
	AliTRDtrackingChamber* GetChamber(Int_t stack, Int_t plane, Bool_t build = kFALSE);
	AliTRDtrackingChamber** GetStack(Int_t stack);
	Int_t    GetSector() const {return fSector;}	

	void     Init();
	void     Print(Option_t *opt = 0x0);
	
	void     SetGeometry(AliTRDgeometry *geo) {fGeom = geo;}
	 
private:
	Char_t         fSector;           // Sector# in AliTRDgeometry
	UChar_t        fN;                // Total number of chambers allocated
	Char_t         fIndex[kNChambersSector]; // indexes of allocated chambers
	Float_t        fX0[kNplane];      // average position of pad plane for each plane
	AliTRDgeometry *fGeom;            // Geometry
	AliTRDtrackingChamber *fChamber[kNChambersSector];// chambers   
	AliTRDtrackingChamber *fStack[kNplane]; //! temporary holding one stack

	ClassDef(AliTRDtrackingSector, 1) // TRD tracker container for one sector
};


#endif // ALITRDTRACKINGSECTOR_H