GN_Data.h

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//! \file
//!
//! Header file for the GN_Data class.
//!
//! Declares the GN_Data class and the member routines which
//! are used in collecting the information for a given event.
//!
//! \author D.K. Hasell
//! \version 1.0
//! \date 2010-10-31
//!
//! \ingroup detector

// Ensure header file only included once.

#ifndef GN_DATA_H
#define GN_DATA_H

// Include the STL header files referenced in this file.

#include <vector>

// Include the ROOT header files referened here.

#include "TObject.h"

// Use the std namespace.

using namespace std;

//! GN_Data class 

class GN_Data : public TObject {

public:

     //! Constructor.

     GN_Data();

     //! Destructor.

     ~GN_Data();

     // Member functions.

     //! Clear the event vectors.

     void Reset();

     //! Function to calculate the total momentum for a given vertex.

     double P( int i );

     //! Function to calculate the polar angle for a given vertex.

     double Theta( int i );

     //! Function to calculate the azimuthal angle for a given vertex.

     double Phi( int i );

private:

     friend class EventAction;

     int nGN;

     vector<int> id;
     vector<int> q;
     vector<int> tr;

     vector<double> x;
     vector<double> y;
     vector<double> z;

     vector<double> px;
     vector<double> py;
     vector<double> pz;

     ClassDef( GN_Data, 1 )     //The OLYMPUS MC data class.
          };

#endif