HadrontherapyMagneticField3D.hh

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//
// Hadrontherapy advanced example for Geant4
// See more at: https://twiki.cern.ch/twiki/bin/view/Geant4/AdvancedExamplesHadrontherapy
// (This class was adapted from the purging magnet example, by S.Larsson and J. Generowicz.)

#include "globals.hh"
#include "G4MagneticField.hh"
#include "G4ios.hh"

#include <fstream>
#include <vector>
#include <cmath>

using namespace std;

class HadrontherapyMagneticField3D
#ifndef STANDALONE
 : public G4MagneticField
#endif
{
  
  // Storage space for the table
  vector< vector< vector< double > > > xField;
  vector< vector< vector< double > > > yField;
  vector< vector< vector< double > > > zField;
  // The dimensions of the table
  int nx,ny,nz; 
  // The physical limits of the defined region
  double minx, maxx, miny, maxy, minz, maxz;
  // The physical extent of the defined region
  double dx, dy, dz;
  double fXoffset;
  bool invertX, invertY, invertZ;

public:
  HadrontherapyMagneticField3D(const char* filename, double xOffset );
  void  GetFieldValue( const  double Point[4],
           double *Bfield          ) const;
};