Geant4 Cross Reference

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Geant4/examples/extended/field/field04/src/F04SimpleSolenoid.cc

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 26 //
 27 /// \file field/field04/src/F04SimpleSolenoid.cc
 28 /// \brief Implementation of the F04SimpleSolenoid class
 29 //
 30 
 31 #include "F04SimpleSolenoid.hh"
 32 
 33 #include "F04GlobalField.hh"
 34 
 35 #include "G4GeometryManager.hh"
 36 #include "globals.hh"
 37 
 38 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 39 
 40 F04SimpleSolenoid::F04SimpleSolenoid(G4double Bz, G4double fz, G4LogicalVolume* lv, G4ThreeVector c)
 41   : F04ElementField(c, lv),
 42     fBfield(Bz),
 43     fFringeZ(fz),
 44     fFieldLength(2. * ((G4Tubs*)fVolume->GetSolid())->GetZHalfLength() + fFringeZ),
 45     fFieldRadius(((G4Tubs*)fVolume->GetSolid())->GetOuterRadius())
 46 {}
 47 
 48 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 49 
 50 void F04SimpleSolenoid::AddFieldValue(const G4double point[4], G4double field[6]) const
 51 {
 52   G4ThreeVector global(point[0], point[1], point[2]);
 53   G4ThreeVector local;
 54 
 55   local = fGlobal2local.TransformPoint(global);
 56 
 57   if (IsOutside(local)) return;
 58 
 59   G4ThreeVector B(0.0, 0.0, fBfield);
 60 
 61   B = fGlobal2local.Inverse().TransformAxis(B);
 62 
 63   field[0] += B[0];
 64   field[1] += B[1];
 65   field[2] += B[2];
 66 }
 67 
 68 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 69 
 70 G4bool F04SimpleSolenoid::IsOutside(G4ThreeVector& local) const
 71 {
 72   //  EInside inside = tubs->Inside(local);
 73   //  return (inside == kOutside);
 74   G4double r = std::sqrt(local.x() * local.x() + local.y() * local.y());
 75   return (r > fFieldRadius || std::fabs(local.z()) > fFieldLength / 2.0);
 76 }
 77 
 78 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 79 
 80 G4bool F04SimpleSolenoid::IsWithin(G4ThreeVector& local) const
 81 {
 82   //  EInside inside = tubs->Inside(local);
 83   //  return (inside == kInside);
 84   G4double r = std::sqrt(local.x() * local.x() + local.y() * local.y());
 85   return (r < fFieldRadius && std::fabs(local.z()) < fFieldLength / 2.0);
 86 }
 87