Import Geant4 10.7.0 source tree

2020-12-04 12:30:43 +01:00
parent 67ba86d073
commit dab42d2018
3770 changed files with 226369 additions and 286486 deletions
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+//
+// ********************************************************************
+// * License and Disclaimer                                           *
+// *                                                                  *
+// * The  Geant4 software  is  copyright of the Copyright Holders  of *
+// * the Geant4 Collaboration.  It is provided  under  the terms  and *
+// * conditions of the Geant4 Software License,  included in the file *
+// * LICENSE and available at  http://cern.ch/geant4/license .  These *
+// * include a list of copyright holders.                             *
+// *                                                                  *
+// * Neither the authors of this software system, nor their employing *
+// * institutes,nor the agencies providing financial support for this *
+// * work  make  any representation or  warranty, express or implied, *
+// * regarding  this  software system or assume any liability for its *
+// * use.  Please see the license in the file  LICENSE  and URL above *
+// * for the full disclaimer and the limitation of liability.         *
+// *                                                                  *
+// * This  code  implementation is the result of  the  scientific and *
+// * technical work of the GEANT4 collaboration.                      *
+// * By using,  copying,  modifying or  distributing the software (or *
+// * any work based  on the software)  you  agree  to acknowledge its *
+// * use  in  resulting  scientific  publications,  and indicate your *
+// * acceptance of all terms of the Geant4 Software license.          *
+// ********************************************************************
+//
+
+#ifndef TCACHED_MAGNETIC_FIELD_DEF
+#define TCACHED_MAGNETIC_FIELD_DEF
+
+#include "G4Types.hh"
+#include "G4ThreeVector.hh"
+#include "G4MagneticField.hh"
+
+template <class T_Field>
+class G4TCachedMagneticField : public G4MagneticField
+{
+ public:  // with description
+  G4TCachedMagneticField(T_Field* pTField, G4double distance)
+    : G4MagneticField()
+    , fLastLocation(DBL_MAX, DBL_MAX, DBL_MAX)
+    , fLastValue(DBL_MAX, DBL_MAX, DBL_MAX)
+    , fCountCalls(0)
+    , fCountEvaluations(0)
+  {
+    fpMagneticField = pTField;
+    fDistanceConst  = distance;
+
+    // G4cout << " Cached-B-Field constructor> Distance = " << distance <<
+    // G4endl;
+    this->ClearCounts();
+  }
+
+  G4TCachedMagneticField(const G4TCachedMagneticField<T_Field>& rightCMF)
+  {
+    fpMagneticField = rightCMF.fpMagneticField;
+    fDistanceConst  = rightCMF.fDistanceConst;
+    fLastLocation   = rightCMF.fLastLocation;
+    fLastValue      = rightCMF.fLastValue;
+    this->ClearCounts();
+  }
+
+  G4TCachedMagneticField* Clone() const
+  {
+    G4cout << "Clone is called" << G4endl;
+    // Cannot use copy constructor: I need to clone the associated magnetif
+    // field
+    T_Field* aF = this->fpMagneticField->T_Field::Clone();
+    G4TCachedMagneticField* cloned =
+      new G4TCachedMagneticField(aF, this->fDistanceConst);
+    cloned->fLastLocation = this->fLastLocation;
+    cloned->fLastValue    = this->fLastValue;
+    return cloned;
+  }
+
+  virtual ~G4TCachedMagneticField() { ; }
+  // Constructor and destructor. No actions.
+
+  void ReportStatistics()
+  {
+    G4cout << " Cached field: " << G4endl
+           << "   Number of calls:        " << fCountCalls << G4endl
+           << "   Number of evaluations : " << fCountEvaluations << G4endl;
+  }
+
+  virtual void GetFieldValue(const G4double Point[4], G4double* Bfield) const
+  {
+    G4ThreeVector newLocation(Point[0], Point[1], Point[2]);
+
+    G4double distSq = (newLocation - fLastLocation).mag2();
+    fCountCalls++;
+    if(distSq < fDistanceConst * fDistanceConst)
+    {
+      Bfield[0] = fLastValue.x();
+      Bfield[1] = fLastValue.y();
+      Bfield[2] = fLastValue.z();
+    }
+    else
+    {
+      // G4CachedMagneticField* thisNonC=
+      // const_cast<G4CachedMagneticField*>(this);
+      fpMagneticField->T_Field::GetFieldValue(Point, Bfield);
+      // G4cout << " Evaluating. " << G4endl;
+      fCountEvaluations++;
+      // thisNonC->
+      fLastLocation = G4ThreeVector(Point[0], Point[1], Point[2]);
+      // thisNonC->
+      fLastValue = G4ThreeVector(Bfield[0], Bfield[1], Bfield[2]);
+    }
+  }
+
+  G4double GetConstDistance() const { return fDistanceConst; }
+  void SetConstDistance(G4double dist) { fDistanceConst = dist; }
+
+  G4int GetCountCalls() const { return fCountCalls; }
+  G4int GetCountEvaluations() const { return fCountEvaluations; }
+  void ClearCounts()
+  {
+    fCountCalls       = 0;
+    fCountEvaluations = 0;
+  }
+
+  G4TCachedMagneticField& operator=(const G4TCachedMagneticField& right)
+  {
+    if(&right == this)
+      return *this;
+
+    fpMagneticField = right.fpMagneticField;
+
+    fDistanceConst= right.fDistanceConst;
+    fLastLocation = right.fLastLocation;
+    fLastValue = right.fLastValue;
+
+    fCountCalls = 0;
+    fCountEvaluations = 0;
+    
+    return *this;
+ }
+
+ private:
+  T_Field* fpMagneticField;
+  // When the field is evaluated within this distance it will not change
+  G4double fDistanceConst;
+  // Caching state
+  mutable G4ThreeVector fLastLocation;
+  mutable G4ThreeVector fLastValue;
+
+ protected:
+  mutable G4int fCountCalls, fCountEvaluations;
+};
+
+#endif /* TCACHED_MAGNETIC_FIELD_DEF */