// $Id: BrGeantInput.h,v 1.11 1998/07/17 02:20:07 hagel Exp $
//
// $Log: BrGeantInput.h,v $
// Revision 1.11  1998/07/17 02:20:07  hagel
// Modifications for byte swapping in BrGeantInput
//
// Revision 1.10  1998/06/21 20:11:04  hagel
// cleanup
//
// Revision 1.9  1998/05/14 21:18:50  videbaek
// update makefile - do not reload .so libraries
//
// Revision 1.8  1998/05/08 00:58:50  videbaek
// TPC code updates
//
// Revision 1.7  1998/04/30 22:24:34  hagel
// Add io.h include for WIN32 again
//
// Revision 1.6  1998/04/30 17:12:33  videbaek
// Added functionality to BrGeantInput
//
// Revision 1.3  1998/04/08 18:09:23  videbaek
// changed GeantInput class to use open,read
//
// Revision 1.2  1998/04/06 21:12:09  videbaek
// Clean up and additions for Win95
//
// Revision 1.1  1998/04/03 21:15:17  videbaek
// part of first base release
//
// Revision 1.1.1.1  1998/03/04 21:33:10  brahmlib
// Brat geant
//
//
#ifndef _BRGEANTINPUT_H
#define _BRGEANTINPUT_H

///////////////////////////////////////////////////////////////////////
//                                                                   //
//    BrGeantData                                                    //
//                                                                   //
//    BRAHMS simulated raw data class                                //
//                                                                   //
//    BrGeantInput read  geant raw data in stream i/o format         //
//
//    the class is derived from the BrIOModule class                 //
//                                                                   //
//    Author  : F.Videbaek
//    Created : March 98                                             //
//    Version : 1.0                                                  //
//    Changed : 
//
///////////////////////////////////////////////////////////////////////

#define USE_FSTREAM 0

#if USE_FSTREAM
#include "fstream.h"
#else
#ifdef WIN32
#include "io.h"
#endif 
#endif
#include "stdio.h"

#include "BrIOModule.h"
#include "TObject.h"


const int MAXGIVOLU = 30;


class BrGeantHit;  
class BrGeantTrack;  
class BrEvent;  


struct GeantVol {
   int shape;
   int Npar;
   char Name[4];
   float pos[3];
   float rotang[3][3];
   float param[12];
   int Active;
   };


class BrGeantInput : public BrIOModule {

public:
  BrGeantInput(); 
  BrGeantInput(Char_t *filename);
  
  virtual ~BrGeantInput(); 
  
  virtual Bool_t    Open(Char_t *fname);
  virtual Bool_t    Close();
  virtual void      Event(BrEvent* event);
  virtual Bool_t    ReadStreamHeader();
  virtual void      SkipEvent(Int_t numevt);
  
  Int_t   GetNumberOfVolumes(){return fNumberOfVolumes;}
  Bool_t  GetrHeader()               { return rHeader; }
  void    SetrHeader( Bool_t rHead ) { rHeader = rHead; }
  void    SwapLong(int *buffer,int nb);        //Swap bytes on other endian

private:

  Bool_t rHeader;                 //! Header read mark
  Bool_t fByteSwap;               //  Flag for ByteSwap
  Int_t  fEventCounter;           //! Event counter
  Char_t fFileName[256];          //! File name for ASCII file containing raw hits
#if USE_FSTREAM
  ifstream *fFilePointer;         //  File pointer to STREAM file
#else
  Int_t fFileDescriptor;           // file descriptor
#endif
  Int_t       fNumberOfVolumes;   //!  Number of GEANT volumes
  GeantVol fVolume[MAXGIVOLU];    //!  Geant Volumes in STREAM file


public:

ClassDef(BrGeantInput,0) // Interface to STREAM files

};

#endif