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25 // 25 //
26 // G4CachedMagneticField implementation <<
27 // 26 //
28 // Author: J.Apostolakis, 20 July 2009. << 27 // $Id: G4CachedMagneticField.cc 97486 2016-06-03 10:45:04Z gcosmo $
>> 28 //
29 // ------------------------------------------- 29 // --------------------------------------------------------------------
30 30
31 #include "G4CachedMagneticField.hh" 31 #include "G4CachedMagneticField.hh"
32 32
33 G4CachedMagneticField::G4CachedMagneticField(G << 33 G4CachedMagneticField::G4CachedMagneticField(G4MagneticField *pMagField,
34 G << 34 G4double distance)
35 : fpMagneticField(pMagField), fDistanceConst << 35 : G4MagneticField(),
36 fLastLocation(DBL_MAX,DBL_MAX,DBL_MAX), fL << 36 fLastLocation(DBL_MAX,DBL_MAX,DBL_MAX),
>> 37 fLastValue(DBL_MAX,DBL_MAX,DBL_MAX),
>> 38 fCountCalls(0), fCountEvaluations(0)
37 { 39 {
38 ClearCounts(); << 40 fpMagneticField= pMagField;
>> 41 fDistanceConst= distance;
>> 42
>> 43 // G4cout << " Cached-B-Field constructor> Distance = " << distance << G4endl;
>> 44 this->ClearCounts();
39 } 45 }
40 46
41 G4Field* G4CachedMagneticField::Clone() const 47 G4Field* G4CachedMagneticField::Clone() const
42 { 48 {
43 // Cannot use copy constructor: need to clon << 49 // Cannot use copy constructor: I need to clone the associated magnetic field
44 << 50 G4MagneticField* aF = static_cast<G4MagneticField*>(fpMagneticField->Clone());
45 auto aF = static_cast<G4MagneticField*>(fpM << 51 G4CachedMagneticField* cloned = new G4CachedMagneticField(aF, fDistanceConst);
46 auto cloned = new G4CachedMagneticField(aF, <<
47 52
48 cloned->fLastLocation = fLastLocation; 53 cloned->fLastLocation = fLastLocation;
49 cloned->fLastValue = fLastValue; 54 cloned->fLastValue = fLastValue;
50 return cloned; 55 return cloned;
51 } 56 }
52 57
53 G4CachedMagneticField::~G4CachedMagneticField( << 58 G4CachedMagneticField::~G4CachedMagneticField()
>> 59 {
>> 60 }
54 61
55 void 62 void
56 G4CachedMagneticField::ReportStatistics() 63 G4CachedMagneticField::ReportStatistics()
57 { 64 {
58 G4cout << " Cached field: " << G4endl 65 G4cout << " Cached field: " << G4endl
59 << " Number of calls: " << f << 66 << " Number of calls: " << fCountCalls << G4endl
60 << " Number of evaluations : " << f << 67 << " Number of evaluations : " << fCountEvaluations << G4endl;
61 } 68 }
62 69
63 G4CachedMagneticField:: << 70 G4CachedMagneticField::G4CachedMagneticField(const G4CachedMagneticField &rightCMF)
64 G4CachedMagneticField(const G4CachedMagneticFi <<
65 : G4MagneticField(rightCMF) 71 : G4MagneticField(rightCMF)
66 { 72 {
67 fpMagneticField= rightCMF.fpMagneticField; 73 fpMagneticField= rightCMF.fpMagneticField; // NOTE: sharing pointer here!
68 fDistanceConst = rightCMF.fDistanceConst; 74 fDistanceConst = rightCMF.fDistanceConst;
69 fLastLocation = rightCMF.fLastLocation; 75 fLastLocation = rightCMF.fLastLocation;
70 fLastValue = rightCMF.fLastValue; 76 fLastValue = rightCMF.fLastValue;
71 ClearCounts(); << 77 this->ClearCounts();
72 } 78 }
73 79
74 G4CachedMagneticField& << 80 G4CachedMagneticField& G4CachedMagneticField::operator = (const G4CachedMagneticField &p)
75 G4CachedMagneticField::operator = (const G4Cac <<
76 { 81 {
77 if (&p == this) { return *this; } << 82 if (&p == this) return *this;
78 G4MagneticField::operator=(p); 83 G4MagneticField::operator=(p);
79 fpMagneticField= p.fpMagneticField; // NOTE 84 fpMagneticField= p.fpMagneticField; // NOTE: sharing pointer here!
80 fDistanceConst = p.fDistanceConst; 85 fDistanceConst = p.fDistanceConst;
81 fLastLocation = p.fLastLocation; 86 fLastLocation = p.fLastLocation;
82 fLastValue = p.fLastValue; 87 fLastValue = p.fLastValue;
83 ClearCounts(); << 88 this->ClearCounts();
84 return *this; 89 return *this;
85 } 90 }
86 91
87 void 92 void
88 G4CachedMagneticField::GetFieldValue( const G4 93 G4CachedMagneticField::GetFieldValue( const G4double Point[4],
89 G4 << 94 G4double *Bfield ) const
90 { 95 {
91 G4ThreeVector newLocation( Point[0], Point[1 96 G4ThreeVector newLocation( Point[0], Point[1], Point[2] );
92 97
>> 98 // G4cout << "Cache-B-field called at " << newLocation << G4endl;
>> 99
93 G4double distSq= (newLocation-fLastLoca 100 G4double distSq= (newLocation-fLastLocation).mag2();
94 ++fCountCalls; << 101 fCountCalls++;
95 if( distSq < fDistanceConst*fDistanceConst ) << 102 if( distSq < fDistanceConst*fDistanceConst ) {
96 { <<
97 Bfield[0] = fLastValue.x(); 103 Bfield[0] = fLastValue.x();
98 Bfield[1] = fLastValue.y(); 104 Bfield[1] = fLastValue.y();
99 Bfield[2] = fLastValue.z(); 105 Bfield[2] = fLastValue.z();
100 } << 106 }else{
101 else << 107 // G4CachedMagneticField* thisNonC= const_cast<G4CachedMagneticField*>(this);
102 { <<
103 fpMagneticField->GetFieldValue( Point, Bf 108 fpMagneticField->GetFieldValue( Point, Bfield );
104 ++fCountEvaluations; << 109 // G4cout << " Evaluating. " << G4endl;
105 fLastLocation = G4ThreeVector( Point[0], << 110 fCountEvaluations++;
106 fLastValue = G4ThreeVector( Bfield[0], << 111 // thisNonC->
>> 112 fLastLocation= G4ThreeVector( Point[0], Point[1], Point[2] );
>> 113 // thisNonC->
>> 114 fLastValue= G4ThreeVector( Bfield[0], Bfield[1], Bfield[2] );
107 } 115 }
108 } 116 }
109 117