#ifndef MCTRACK_HPP
#define MCTRACK_HPP
//
// $Id: ToyParticle.hpp,v 1.1 1998/12/20 14:56:29 hobbs Exp $
//
// File: McTrack.hpp
// Purpose: 
// Created: 11-MAY-1998   John Hobbs
//
// $Revision: 1.1 $
//
//

// Include files

// Global definitions
class McTrack {
public:
  McTrack(): _serial_number(-1) {}
  McTrack(std::istream& instr);

  int type() const {return _id; } // The PDG id
  int serial() const { return _serial_number; }

  double b() const;       // The usual track parameters
  double kappa() const;
  double phi0() const;
  double z0() const;
  double lambda() const;

  double xc() const;    // The circle form of the parameters
  double yc() const;
  double R() const;

  double pT() const { return _pt; }    // Duh...
  double p() const;
  double theta() const;
  double eta() const { return _eta; }
  double phi() const { return _phi; }

  static McTrack& bad_track() { return _bad; }

private:

  int _id;
  int _serial_number;
  double _pt;
  double _phi;
  double _eta;
  double _xvert,_yvert,_zvert;

  static McTrack _bad; // Keep this for testing against

  double sign(const double) const;
};

// Constructors/Destructors
McTrack::McTrack(std::istream& instr)
//
// Purpose: Create an MC track by reading the next record from the input
//          stream
//
{
  // Check that this really is an MC track
  std::string tag;
  instr >> tag;
  if( tag != "GTK" ) {
  }

  // Now just read the parameter values
  int idummy;
  instr >> idummy >> _serial_number >> _id >> _pt >> _phi >> _eta
	>> _xvert >> _yvert >> _zvert;
  
}

// Accessors
#include "McTrack.icc"

#endif //MCTRACK_HPP