source: trunk/examples/extended/field/field04/src/F04SimpleSolenoid.cc @ 1309

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#include "globals.hh"

#include "G4GeometryManager.hh"

#include "F04GlobalField.hh"

#include "F04SimpleSolenoid.hh"

F04SimpleSolenoid::F04SimpleSolenoid(G4double Bz, G4double fz,
                               G4LogicalVolume* lv, 
                               G4ThreeVector c) : F04ElementField(c,lv)
{
  Bfield  = Bz;
  fringeZ = fz;

  fieldLength = 2.*((G4Tubs*)lvolume->GetSolid())->GetZHalfLength()+fringeZ;
  fieldRadius = ((G4Tubs*)lvolume->GetSolid())->GetOuterRadius();
}

void F04SimpleSolenoid::addFieldValue(const G4double point[4],
                                         G4double field[6]) const
{
   G4ThreeVector global(point[0],point[1],point[2]);
   G4ThreeVector local;

   local = global2local.TransformPoint(global);

   if (isOutside(local)) return;

   G4ThreeVector B(0.0,0.0,Bfield);

   B = global2local.Inverse().TransformAxis(B);

   field[0] += B[0];
   field[1] += B[1];
   field[2] += B[2];
}

G4bool F04SimpleSolenoid::isOutside(G4ThreeVector& local) const
{
//  EInside inside = tubs->Inside(local);
//  return (inside == kOutside);
  G4double r = std::sqrt(local.x()*local.x()+local.y()*local.y());
  return (r > fieldRadius || std::fabs(local.z()) > fieldLength/2.0);
}

G4bool F04SimpleSolenoid::isWithin(G4ThreeVector& local) const
{
//  EInside inside = tubs->Inside(local);
//  return (inside == kInside);
  G4double r = std::sqrt(local.x()*local.x()+local.y()*local.y());
  return (r < fieldRadius && std::fabs(local.z()) < fieldLength/2.0);
}