purging_magnet/include/PurgMagTabulatedField3D.hh

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
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0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
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0024 // ********************************************************************
0025 //
0026 // Code developed by:
0027 //  S.Larsson and J. Generowicz.
0028 //
0029 //    *************************************
0030 //    *                                   *
0031 //    *    PurgMagTabulatedField3D.hh     *
0032 //    *                                   *
0033 //    *************************************
0034 //
0035 //
0036
0037 #include "globals.hh"
0038 #include "G4MagneticField.hh"
0039 #include "G4ios.hh"
0040
0041 #include <fstream>
0042 #include <vector>
0043 #include <cmath>
0044
0045 class PurgMagTabulatedField3D
0046 #ifndef STANDALONE
0047  : public G4MagneticField
0048 #endif
0049 {
0050
0051   // Storage space for the table
0052   std::vector< std::vector< std::vector< double > > > xField;
0053   std::vector< std::vector< std::vector< double > > > yField;
0054   std::vector< std::vector< std::vector< double > > > zField;
0055   // The dimensions of the table
0056   int nx,ny,nz;
0057   // The physical limits of the defined region
0058   double minx, maxx, miny, maxy, minz, maxz;
0059   // The physical extent of the defined region
0060   double dx, dy, dz;
0061   double fZoffset;
0062   bool invertX, invertY, invertZ;
0063
0064 public:
0065   PurgMagTabulatedField3D(const char* filename, double zOffset );
0066   void  GetFieldValue( const  double Point[4],
0067                double *Bfield          ) const;
0068 };
0069