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25 // 25 //
26 // G4ErrorCylSurfaceTarget class implementatio << 26 //
27 // << 27 //
28 // Created: P.Arce, September 2004 << 28 //
>> 29 // --------------------------------------------------------------------
>> 30 // GEANT 4 class implementation file
29 // ------------------------------------------- 31 // --------------------------------------------------------------------
30 32
31 #include "G4ErrorCylSurfaceTarget.hh" 33 #include "G4ErrorCylSurfaceTarget.hh"
32 #include "G4GeometryTolerance.hh" 34 #include "G4GeometryTolerance.hh"
33 35
34 #ifdef G4VERBOSE 36 #ifdef G4VERBOSE
35 #include "G4ErrorPropagatorData.hh" // for ver << 37 #include "G4ErrorPropagatorData.hh" //for verbosity checking
36 #endif 38 #endif
37 39
38 #include "geomdefs.hh" 40 #include "geomdefs.hh"
39 #include "G4Normal3D.hh" <<
40 #include "G4Plane3D.hh" 41 #include "G4Plane3D.hh"
41 42
42 //-------------------------------------------- 43 //---------------------------------------------------------------------
43 44
44 G4ErrorCylSurfaceTarget:: 45 G4ErrorCylSurfaceTarget::
45 G4ErrorCylSurfaceTarget( const G4double& radiu 46 G4ErrorCylSurfaceTarget( const G4double& radius,
46 const G4ThreeVector& 47 const G4ThreeVector& trans,
47 const G4RotationMatri 48 const G4RotationMatrix& rotm )
48 : fradius(radius) 49 : fradius(radius)
49 { 50 {
50 theType = G4ErrorTarget_CylindricalSurface; 51 theType = G4ErrorTarget_CylindricalSurface;
51 52
52 ftransform = G4AffineTransform( rotm.inverse 53 ftransform = G4AffineTransform( rotm.inverse(), -trans );
53 #ifdef G4VERBOSE 54 #ifdef G4VERBOSE
54 if(G4ErrorPropagatorData::verbose() >= 2 ) << 55 if(G4ErrorPropagatorData::verbose() >= 2 ) {
55 { <<
56 Dump( " $$$ creating G4ErrorCylSurfaceTarg 56 Dump( " $$$ creating G4ErrorCylSurfaceTarget ");
57 } 57 }
58 #endif 58 #endif
59 } 59 }
60 60
61 //-------------------------------------------- 61 //---------------------------------------------------------------------
62 62
63 G4ErrorCylSurfaceTarget:: 63 G4ErrorCylSurfaceTarget::
64 G4ErrorCylSurfaceTarget( const G4double& radiu 64 G4ErrorCylSurfaceTarget( const G4double& radius,
65 const G4AffineTransfo 65 const G4AffineTransform& trans )
66 : fradius(radius), ftransform(trans.Inverse( 66 : fradius(radius), ftransform(trans.Inverse())
67 { 67 {
68 theType = G4ErrorTarget_CylindricalSurface; 68 theType = G4ErrorTarget_CylindricalSurface;
69 69
70 #ifdef G4VERBOSE 70 #ifdef G4VERBOSE
71 if(G4ErrorPropagatorData::verbose() >= 2 ) 71 if(G4ErrorPropagatorData::verbose() >= 2 )
72 { 72 {
73 Dump( " $$$ creating G4ErrorCylSurfaceTarg 73 Dump( " $$$ creating G4ErrorCylSurfaceTarget ");
74 } 74 }
75 #endif 75 #endif
>> 76 }
>> 77
>> 78 //---------------------------------------------------------------------
>> 79
>> 80 G4ErrorCylSurfaceTarget::~G4ErrorCylSurfaceTarget()
>> 81 {
76 } 82 }
77 83
78 //-------------------------------------------- 84 //---------------------------------------------------------------------
79 85
80 G4double G4ErrorCylSurfaceTarget:: 86 G4double G4ErrorCylSurfaceTarget::
81 GetDistanceFromPoint( const G4ThreeVector& poi 87 GetDistanceFromPoint( const G4ThreeVector& point,
82 const G4ThreeVector& dir 88 const G4ThreeVector& dir ) const
83 { 89 {
84 if( dir.mag() == 0. ) 90 if( dir.mag() == 0. )
85 { 91 {
86 G4Exception("G4ErrorCylSurfaceTarget::GetD 92 G4Exception("G4ErrorCylSurfaceTarget::GetDistanceFromPoint()",
87 "GeomMgt0003", FatalException, 93 "GeomMgt0003", FatalException, "Direction is zero !");
88 } 94 }
89 95
90 //----- Get intersection point 96 //----- Get intersection point
91 G4ThreeVector localPoint = ftransform.Transf 97 G4ThreeVector localPoint = ftransform.TransformPoint( point );
92 G4ThreeVector localDir = ftransform.Transfor 98 G4ThreeVector localDir = ftransform.TransformAxis( dir );
93 G4ThreeVector inters = IntersectLocal(localP 99 G4ThreeVector inters = IntersectLocal(localPoint, localDir);
94 100
95 G4double dist = (localPoint-inters).mag(); 101 G4double dist = (localPoint-inters).mag();
96 102
97 #ifdef G4VERBOSE 103 #ifdef G4VERBOSE
98 if(G4ErrorPropagatorData::verbose() >= 3 ) 104 if(G4ErrorPropagatorData::verbose() >= 3 )
99 { 105 {
100 G4cout << " G4ErrorCylSurfaceTarget::GetDi 106 G4cout << " G4ErrorCylSurfaceTarget::GetDistanceFromPoint():" << G4endl
101 << " Global point " << point << " d 107 << " Global point " << point << " dir " << dir << G4endl
102 << " Intersection " << inters << G4 108 << " Intersection " << inters << G4endl
103 << " Distance " << dist << G4endl; 109 << " Distance " << dist << G4endl;
104 Dump( " CylSurface: " ); 110 Dump( " CylSurface: " );
105 } 111 }
106 #endif 112 #endif
107 113
108 return dist; 114 return dist;
109 } 115 }
110 116
111 117
112 //-------------------------------------------- 118 //---------------------------------------------------------------------
113 119
114 G4double G4ErrorCylSurfaceTarget:: 120 G4double G4ErrorCylSurfaceTarget::
115 GetDistanceFromPoint( const G4ThreeVector& poi 121 GetDistanceFromPoint( const G4ThreeVector& point ) const
116 { 122 {
117 G4ThreeVector localPoint = ftransform.Transf 123 G4ThreeVector localPoint = ftransform.TransformPoint( point );
118 124
119 #ifdef G4VERBOSE 125 #ifdef G4VERBOSE
120 if(G4ErrorPropagatorData::verbose() >= 3 ) 126 if(G4ErrorPropagatorData::verbose() >= 3 )
121 { 127 {
122 G4cout << " G4ErrorCylSurfaceTarget::GetDi 128 G4cout << " G4ErrorCylSurfaceTarget::GetDistanceFromPoint:" << G4endl
123 << " Global point " << point << G4e 129 << " Global point " << point << G4endl
124 << " Distance " << fradius - localP 130 << " Distance " << fradius - localPoint.perp() << G4endl;
125 Dump( " CylSurface: " ); 131 Dump( " CylSurface: " );
126 } 132 }
127 #endif 133 #endif
128 134
129 return fradius - localPoint.perp(); 135 return fradius - localPoint.perp();
130 } 136 }
131 137
132 //-------------------------------------------- 138 //---------------------------------------------------------------------
133 139
134 G4ThreeVector G4ErrorCylSurfaceTarget:: 140 G4ThreeVector G4ErrorCylSurfaceTarget::
135 IntersectLocal( const G4ThreeVector& localPoin 141 IntersectLocal( const G4ThreeVector& localPoint,
136 const G4ThreeVector& localDir 142 const G4ThreeVector& localDir ) const
137 { 143 {
138 G4double eqa = localDir.x()*localDir.x()+loc 144 G4double eqa = localDir.x()*localDir.x()+localDir.y()*localDir.y();
139 G4double eqb = 2*(localPoint.x()*localDir.x( 145 G4double eqb = 2*(localPoint.x()*localDir.x()+localPoint.y()*localDir.y());
140 G4double eqc = -fradius*fradius+localPoint.x 146 G4double eqc = -fradius*fradius+localPoint.x()*localPoint.x()
141 +localPoint.y()*localPoint.y( 147 +localPoint.y()*localPoint.y();
142 G4int inside = (localPoint.perp() > fradius) 148 G4int inside = (localPoint.perp() > fradius) ? -1 : 1;
143 G4double lambda; 149 G4double lambda;
144 150
145 if( eqa*inside > 0. ) 151 if( eqa*inside > 0. )
146 { 152 {
147 lambda = (-eqb + std::sqrt(eqb*eqb-4*eqa*e 153 lambda = (-eqb + std::sqrt(eqb*eqb-4*eqa*eqc) ) / (2.*eqa);
148 } 154 }
149 else if( eqa*inside < 0. ) 155 else if( eqa*inside < 0. )
150 { 156 {
151 lambda = (-eqb - std::sqrt(eqb*eqb-4*eqa*e 157 lambda = (-eqb - std::sqrt(eqb*eqb-4*eqa*eqc) ) / (2.*eqa);
152 } 158 }
153 else 159 else
154 { 160 {
155 if( eqb != 0. ) 161 if( eqb != 0. )
156 { 162 {
157 lambda = -eqc/eqb; 163 lambda = -eqc/eqb;
158 } 164 }
159 else 165 else
160 { 166 {
161 std::ostringstream message; 167 std::ostringstream message;
162 message << "Intersection not possible !" 168 message << "Intersection not possible !" << G4endl
163 << " Point: " << localP 169 << " Point: " << localPoint << ", direction: "
164 << localDir; 170 << localDir;
165 Dump( " CylSurface: " ); 171 Dump( " CylSurface: " );
166 G4Exception("G4ErrorCylSurfaceTarget::In 172 G4Exception("G4ErrorCylSurfaceTarget::IntersectLocal()",
167 "GeomMgt1002", JustWarning, 173 "GeomMgt1002", JustWarning, message);
168 lambda = kInfinity; 174 lambda = kInfinity;
169 } 175 }
170 } 176 }
171 177
172 G4ThreeVector inters = localPoint + lambda*l 178 G4ThreeVector inters = localPoint + lambda*localDir/localDir.mag();
173 179
174 #ifdef G4VERBOSE 180 #ifdef G4VERBOSE
175 if(G4ErrorPropagatorData::verbose() >= 4 ) { 181 if(G4ErrorPropagatorData::verbose() >= 4 ) {
176 G4cout << " G4ErrorCylSurfaceTarget::Inter 182 G4cout << " G4ErrorCylSurfaceTarget::IntersectLocal " << inters << " "
177 << inters.perp() << " localPoint " 183 << inters.perp() << " localPoint " << localPoint << " localDir "
178 << localDir << G4endl; 184 << localDir << G4endl;
179 } 185 }
180 #endif 186 #endif
181 187
182 return inters; 188 return inters;
183 } 189 }
184 190
185 //-------------------------------------------- 191 //---------------------------------------------------------------------
186 192
187 G4Plane3D G4ErrorCylSurfaceTarget:: 193 G4Plane3D G4ErrorCylSurfaceTarget::
188 GetTangentPlane( const G4ThreeVector& point ) 194 GetTangentPlane( const G4ThreeVector& point ) const
189 { 195 {
190 G4ThreeVector localPoint = ftransform.Transf 196 G4ThreeVector localPoint = ftransform.TransformPoint( point );
191 197
192 // check that point is at cylinder surface 198 // check that point is at cylinder surface
193 // 199 //
194 if( std::fabs( localPoint.perp() - fradius ) 200 if( std::fabs( localPoint.perp() - fradius )
195 > 1000.*G4GeometryTolerance::GetInstance 201 > 1000.*G4GeometryTolerance::GetInstance()->GetSurfaceTolerance() )
196 { 202 {
197 std::ostringstream message; 203 std::ostringstream message;
198 message << "Local point not at surface !" 204 message << "Local point not at surface !" << G4endl
199 << " Point: " << point << 205 << " Point: " << point << ", local: " << localPoint
200 << G4endl 206 << G4endl
201 << " is not at surface, b 207 << " is not at surface, but far away by: "
202 << localPoint.perp() - fradius << 208 << localPoint.perp() - fradius << " !";
203 G4Exception("G4ErrorCylSurfaceTarget::GetT 209 G4Exception("G4ErrorCylSurfaceTarget::GetTangentPlane()",
204 "GeomMgt1002", JustWarning, me 210 "GeomMgt1002", JustWarning, message);
205 } 211 }
206 212
207 G4Normal3D normal = localPoint - ftransform. 213 G4Normal3D normal = localPoint - ftransform.NetTranslation();
208 214
209 return G4Plane3D( normal, point ); 215 return G4Plane3D( normal, point );
210 } 216 }
211 217
212 218
213 //-------------------------------------------- 219 //---------------------------------------------------------------------
214 220
215 void G4ErrorCylSurfaceTarget::Dump( const G4St 221 void G4ErrorCylSurfaceTarget::Dump( const G4String& msg ) const
216 { 222 {
217 G4cout << msg << " radius " << fradius 223 G4cout << msg << " radius " << fradius
218 << " centre " << ftransform.Ne 224 << " centre " << ftransform.NetTranslation()
219 << " rotation " << ftransform. 225 << " rotation " << ftransform.NetRotation() << G4endl;
220 } 226 }
221 227