#ifndef ALIFMD_H
#define ALIFMD_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights
 * reserved. 
 *
 * Latest changes by Christian Holm Christensen <cholm@nbi.dk>
 *
 * See cxx source for full Copyright notice                               
 */

//____________________________________________________________________
//
//  Manager class for the FMD - Base class.
//
#ifndef ALIDETECTOR_H 
# include <AliDetector.h>
#endif
#ifndef ALIFMDSUBDETECTOR_H
# include "AliFMDSubDetector.h"
#endif
#ifndef ALIFMDRING_H
# include "AliFMDRing.h"
#endif
#ifndef ROOT_TBranch
# include <TBranch.h>
#endif
#ifndef ROOT_TArrayI
# include <TArrayI.h>
#endif

//____________________________________________________________________
class AliFMD : public AliDetector 
{
public:
  AliFMD();
  AliFMD(const char *name, const char *title, bool detailed);
  AliFMD(const AliFMD& FMD) : AliDetector(FMD)  {}  //copy ctor
  virtual ~AliFMD(); 
  AliFMD&               operator=(const AliFMD&)  {return *this;}

  // GEometry ANd Tracking (GEANT :-)
  virtual void   CreateGeometry();
  virtual void   CreateMaterials(); 
  virtual void   Init();
  virtual void   StepManager() = 0;
  AliFMDSubDetector*    GetFMD1() const       { return fFMD1; }
  AliFMDSubDetector*    GetFMD2() const       { return fFMD2; }
  AliFMDSubDetector*    GetFMD3() const       { return fFMD3; }
  AliFMDRing*           GetInner() const      { return fInner; }
  AliFMDRing*           GetOuter() const      { return fOuter; }

  // Graphics and event display 
  virtual        void   BuildGeometry();
  virtual        void   DrawDetector();
  virtual const  Int_t  DistanceToPrimitive(Int_t px, Int_t py);

  // Hit and digit management 
  virtual void          MakeBranch(Option_t *opt=" ");
  virtual void          SetHitsAddressBranch(TBranch *b);
  virtual void          SetTreeAddress();
  virtual TClonesArray* SDigits() { return fSDigits; }        
  virtual void          ResetSDigits();
  virtual void          AddHit(Int_t track, Int_t *vol, Float_t *hits);
  virtual void          AddHit(Int_t    track, 
			       UShort_t detector, 
			       Char_t   ring, 
			       UShort_t sector, 
			       UShort_t strip, 
			       Float_t  x=0,
			       Float_t  y=0, 
			       Float_t  z=0,
			       Float_t  px=0, 
			       Float_t  py=0, 
			       Float_t  pz=0,
			       Float_t  edep=0,
			       Int_t    pdg=0,
			       Float_t  t=0);
  virtual        void   AddDigit(Int_t *digits);
  virtual        void   AddDigit(UShort_t detector=0, 
				 Char_t   ring='\0', 
				 UShort_t sector=0, 
				 UShort_t strip=0, 
				 UShort_t count1=0, 
				 Short_t  count2=-1, 
				 Short_t  count3=-1);
  virtual        void   AddSDigit(Int_t *digits);
  virtual        void   AddSDigit(UShort_t detector=0, 
				  Char_t   ring='\0', 
				  UShort_t sector=0, 
				  UShort_t strip=0, 
				  Float_t  edep=0,
				  UShort_t count1=0, 
				  Short_t  count2=-1, 
				  Short_t  count3=-1);

  // Digitisation
  virtual AliDigitizer* CreateDigitizer(AliRunDigitizer* manager) const;
  virtual        void   Hits2Digits();
  virtual        void   Hits2SDigits();

  // Raw data 
  virtual        void   Digits2Raw();

  // Set various parameters 
  void     SetLegLength(Double_t     length=1);
  void     SetLegRadius(Double_t     radius=.5);
  void     SetLegOffset(Double_t     offset=.5);
  void     SetModuleSpacing(Double_t spacing=1);

  // Get various parameters
  Int_t    GetSiId() const                 { return (*fIdtmed)[kSiId]; }
  Int_t    GetAirId() const                { return (*fIdtmed)[kAirId]; }
  Int_t    GetPlasticId() const            { return (*fIdtmed)[kPlasticId]; }
  Int_t    GetPcbId() const                { return (*fIdtmed)[kPcbId]; }
  Int_t    GetKaptionId() const            { return (*fIdtmed)[kKaptionId]; }
  Int_t    GetCarbonId() const             { return (*fIdtmed)[kCarbonId]; }
  Int_t    GetPrintboardRotationId() const { return fPrintboardRotationId; }
  Int_t    GetShortLegId() const	   { return fShortLegId; }
  Int_t    GetLongLegId() const	           { return fLongLegId; }
  Double_t GetLegLength() const	           { return fLegLength; }
  Double_t GetLegRadius() const	           { return fLegRadius; }
  Double_t GetModuleSpacing() const	   { return fModuleSpacing; }  

  // Utility
  void   Browse(TBrowser* b);
  Float_t GetSiDensity() const { return fSiDensity; }
  enum { 
    kBaseDDL = 0x1000 // DDL offset for the FMD
  };
protected:
  enum {
    kSiId,                 // ID of Si medium
    kAirId,                // ID of Air medium
    kPlasticId,            // ID of Plastic medium
    kPcbId,                // ID of PCB medium
    kSiChipId,             // ID of Si Chip medium
    kKaptionId,            // ID of Kaption medium
    kCarbonId              // ID of Carbon medium
  };

  void    SetSiDensity(Float_t r=2.33) { fSiDensity = r; }
  TClonesArray*      HitsArray();
  TClonesArray*      DigitsArray();
  TClonesArray*      SDigitsArray();
  
  AliFMDRing*        fInner;        // Inner ring structure
  AliFMDRing*        fOuter;        // Outer ring structure  
  AliFMDSubDetector* fFMD1;         // FMD1 structure
  AliFMDSubDetector* fFMD2;         // FMD2 structure  
  AliFMDSubDetector* fFMD3;         // FMD3 structure

  TClonesArray*      fSDigits;
  Int_t              fNsdigits;
  
  Float_t    fSiDensity;            // Density of Silicon
  Int_t      fPrintboardRotationId; // ID of Rotation of print bard
  Int_t      fIdentityRotationId;   // ID of identity matrix 
  Int_t      fShortLegId;           // ID short leg volume
  Int_t      fLongLegId;            // ID long leg volume  
  Double_t   fLegLength;            // Leg length
  Double_t   fLegRadius;            // Leg radius
  Double_t   fModuleSpacing;        // Staggering offset 
  
  ClassDef(AliFMD,8)     // Base class FMD entry point
};

#endif
//____________________________________________________________________
//
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//   mode: C++
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//
// EOF
//