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1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer 3 // * License and Disclaimer *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of *
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18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. *
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24 // ******************************************* 24 // ********************************************************************
25 // 25 //
26 // 26 //
27 // 27 //
28 // 28 //
29 // John Allison 17th August 2013 29 // John Allison 17th August 2013
30 // Michael Kelsey 31st January 2019 -- Move f 30 // Michael Kelsey 31st January 2019 -- Move functionality to G4VFieldModel
31 // 31 //
32 // Class Description: 32 // Class Description:
33 // 33 //
34 // Model that knows how to draw the magnetic f 34 // Model that knows how to draw the magnetic field.
35 35
36 #include "G4MagneticFieldModel.hh" 36 #include "G4MagneticFieldModel.hh"
37 #include "G4Field.hh" 37 #include "G4Field.hh"
38 #include "G4Point3D.hh" 38 #include "G4Point3D.hh"
39 39
40 40
41 // Return magnetic field vector for display 41 // Return magnetic field vector for display
42 42
43 void G4MagneticFieldModel:: 43 void G4MagneticFieldModel::
44 GetFieldAtLocation(const G4Field* field, const 44 GetFieldAtLocation(const G4Field* field, const G4Point3D& position,
45 G4double time, G4Point3D& result) const 45 G4double time, G4Point3D& result) const {
46 if (!field) return; // No action if no f 46 if (!field) return; // No action if no field
47 47
48 G4double xyzt[4] = { position.x(), position. 48 G4double xyzt[4] = { position.x(), position.y(), position.z(), time };
49 G4double BEvals[6] = {0.}; // Field retur 49 G4double BEvals[6] = {0.}; // Field returns {Bx,By,Bz,Ex,Ey,Ez}
50 field->GetFieldValue(xyzt, BEvals); 50 field->GetFieldValue(xyzt, BEvals);
51 51
52 result.set(BEvals[0], BEvals[1], BEvals[2]); 52 result.set(BEvals[0], BEvals[1], BEvals[2]);
53 return; 53 return;
54 } 54 }
55 55