#ifndef STNTUPLE_TStnPi0Block
#define STNTUPLE_TStnPi0Block
//-----------------------------------------------------------------------------
//  definition of the STNTUPLE pi0 block
//  Author:    P. Murat (CDF/FNAL)
//  Date:      Jul 27 2002
//-----------------------------------------------------------------------------

#include "TClonesArray.h"

#include "TStnDataBlock.hh"
#include "TStnPi0.hh"
#include "TStnLinkBlock.hh"
#include "Stntuple/mod/InitStntupleDataBlocks.hh"

class TStnPi0Block: public TStnDataBlock {

  friend Int_t StntupleInitPi0Block (TStnDataBlock*, AbsEvent* ,int);
  friend Int_t StntuplePi0BlockLinks(TStnDataBlock*, AbsEvent* ,int);

public:
//-----------------------------------------------------------------------------
//  data members
//-----------------------------------------------------------------------------
  Int_t          fNPi0;			// # of electrons
  TClonesArray*  fListOfPi0;		// list of electrons
//-----------------------------------------------------------------------------
//  functions
//-----------------------------------------------------------------------------
public:
					// ****** constructors and destructor
  TStnPi0Block();
  virtual ~TStnPi0Block();
					// ****** accessors

  Int_t           NPi0       () const { return fNPi0; }
  TClonesArray*   ListOfPi0  () const { return fListOfPi0; }

  TStnPi0*   Pi0(int i) const { 
    return (TStnPi0*) fListOfPi0->UncheckedAt(i); 
  }
					// ****** modifiers
  TStnPi0*   NewPi0() {
    TStnPi0* p = new ((*fListOfPi0)[fNPi0]) TStnPi0(fNPi0);
    fNPi0++;
    return p;
  }

  Int_t      Pi0Number(const Pi0Candidate* Pi0);

					// ****** overloaded functions of 
					// TObject
  void Clear(Option_t* opt="");
  void Print(Option_t* opt="") const;

  ClassDef(TStnPi0Block,1)		// Pi0 block
};












#endif