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25 // 25 //
26 // G4ErrorCylSurfaceTarget class implementatio << 26 //
27 // << 27 // $Id: G4ErrorCylSurfaceTarget.cc,v 1.4 2007/06/20 12:50:48 arce Exp $
28 // Created: P.Arce, September 2004 << 28 // GEANT4 tag $Name: geant4-09-01-patch-01 $
>> 29 //
>> 30 //
>> 31 // --------------------------------------------------------------------
>> 32 // GEANT 4 class implementation file
29 // ------------------------------------------- 33 // --------------------------------------------------------------------
30 34
31 #include "G4ErrorCylSurfaceTarget.hh" 35 #include "G4ErrorCylSurfaceTarget.hh"
32 #include "G4GeometryTolerance.hh" 36 #include "G4GeometryTolerance.hh"
33 37
34 #ifdef G4VERBOSE 38 #ifdef G4VERBOSE
35 #include "G4ErrorPropagatorData.hh" // for ver << 39 #include "G4ErrorPropagatorData.hh" //for verbosity checking
36 #endif 40 #endif
37 41
38 #include "geomdefs.hh" 42 #include "geomdefs.hh"
39 #include "G4Normal3D.hh" <<
40 #include "G4Plane3D.hh" 43 #include "G4Plane3D.hh"
41 44
42 //-------------------------------------------- 45 //---------------------------------------------------------------------
43 46
44 G4ErrorCylSurfaceTarget:: 47 G4ErrorCylSurfaceTarget::
45 G4ErrorCylSurfaceTarget( const G4double& radiu 48 G4ErrorCylSurfaceTarget( const G4double& radius,
46 const G4ThreeVector& 49 const G4ThreeVector& trans,
47 const G4RotationMatri 50 const G4RotationMatrix& rotm )
48 : fradius(radius) 51 : fradius(radius)
49 { 52 {
50 theType = G4ErrorTarget_CylindricalSurface; 53 theType = G4ErrorTarget_CylindricalSurface;
51 54
52 ftransform = G4AffineTransform( rotm.inverse 55 ftransform = G4AffineTransform( rotm.inverse(), -trans );
53 #ifdef G4VERBOSE 56 #ifdef G4VERBOSE
54 if(G4ErrorPropagatorData::verbose() >= 2 ) << 57 if(G4ErrorPropagatorData::verbose() >= 2 ) {
55 { <<
56 Dump( " $$$ creating G4ErrorCylSurfaceTarg 58 Dump( " $$$ creating G4ErrorCylSurfaceTarget ");
57 } 59 }
58 #endif 60 #endif
59 } 61 }
60 62
61 //-------------------------------------------- 63 //---------------------------------------------------------------------
62 64
63 G4ErrorCylSurfaceTarget:: 65 G4ErrorCylSurfaceTarget::
64 G4ErrorCylSurfaceTarget( const G4double& radiu 66 G4ErrorCylSurfaceTarget( const G4double& radius,
65 const G4AffineTransfo 67 const G4AffineTransform& trans )
66 : fradius(radius), ftransform(trans.Inverse( 68 : fradius(radius), ftransform(trans.Inverse())
67 { 69 {
68 theType = G4ErrorTarget_CylindricalSurface; 70 theType = G4ErrorTarget_CylindricalSurface;
69 71
70 #ifdef G4VERBOSE 72 #ifdef G4VERBOSE
71 if(G4ErrorPropagatorData::verbose() >= 2 ) 73 if(G4ErrorPropagatorData::verbose() >= 2 )
72 { 74 {
73 Dump( " $$$ creating G4ErrorCylSurfaceTarg 75 Dump( " $$$ creating G4ErrorCylSurfaceTarget ");
74 } 76 }
75 #endif 77 #endif
76 } 78 }
77 79
78 //-------------------------------------------- 80 //---------------------------------------------------------------------
79 81
>> 82 G4ErrorCylSurfaceTarget::~G4ErrorCylSurfaceTarget()
>> 83 {
>> 84 }
>> 85
>> 86 //---------------------------------------------------------------------
>> 87
80 G4double G4ErrorCylSurfaceTarget:: 88 G4double G4ErrorCylSurfaceTarget::
81 GetDistanceFromPoint( const G4ThreeVector& poi 89 GetDistanceFromPoint( const G4ThreeVector& point,
82 const G4ThreeVector& dir 90 const G4ThreeVector& dir ) const
83 { 91 {
84 if( dir.mag() == 0. ) 92 if( dir.mag() == 0. )
85 { 93 {
86 G4Exception("G4ErrorCylSurfaceTarget::GetD 94 G4Exception("G4ErrorCylSurfaceTarget::GetDistanceFromPoint()",
87 "GeomMgt0003", FatalException, << 95 "InvalidSetup", FatalException, "Direction is zero !");
88 } 96 }
89 97
90 //----- Get intersection point 98 //----- Get intersection point
91 G4ThreeVector localPoint = ftransform.Transf 99 G4ThreeVector localPoint = ftransform.TransformPoint( point );
92 G4ThreeVector localDir = ftransform.Transfor 100 G4ThreeVector localDir = ftransform.TransformAxis( dir );
93 G4ThreeVector inters = IntersectLocal(localP 101 G4ThreeVector inters = IntersectLocal(localPoint, localDir);
94 102
95 G4double dist = (localPoint-inters).mag(); 103 G4double dist = (localPoint-inters).mag();
96 104
97 #ifdef G4VERBOSE 105 #ifdef G4VERBOSE
98 if(G4ErrorPropagatorData::verbose() >= 3 ) 106 if(G4ErrorPropagatorData::verbose() >= 3 )
99 { 107 {
100 G4cout << " G4ErrorCylSurfaceTarget::GetDi 108 G4cout << " G4ErrorCylSurfaceTarget::GetDistanceFromPoint():" << G4endl
101 << " Global point " << point << " d 109 << " Global point " << point << " dir " << dir << G4endl
102 << " Intersection " << inters << G4 110 << " Intersection " << inters << G4endl
103 << " Distance " << dist << G4endl; 111 << " Distance " << dist << G4endl;
104 Dump( " CylSurface: " ); 112 Dump( " CylSurface: " );
105 } 113 }
106 #endif 114 #endif
107 115
108 return dist; 116 return dist;
109 } 117 }
110 118
111 119
112 //-------------------------------------------- 120 //---------------------------------------------------------------------
113 121
114 G4double G4ErrorCylSurfaceTarget:: 122 G4double G4ErrorCylSurfaceTarget::
115 GetDistanceFromPoint( const G4ThreeVector& poi 123 GetDistanceFromPoint( const G4ThreeVector& point ) const
116 { 124 {
117 G4ThreeVector localPoint = ftransform.Transf 125 G4ThreeVector localPoint = ftransform.TransformPoint( point );
118 126
119 #ifdef G4VERBOSE 127 #ifdef G4VERBOSE
120 if(G4ErrorPropagatorData::verbose() >= 3 ) 128 if(G4ErrorPropagatorData::verbose() >= 3 )
121 { 129 {
122 G4cout << " G4ErrorCylSurfaceTarget::GetDi 130 G4cout << " G4ErrorCylSurfaceTarget::GetDistanceFromPoint:" << G4endl
123 << " Global point " << point << G4e 131 << " Global point " << point << G4endl
124 << " Distance " << fradius - localP 132 << " Distance " << fradius - localPoint.perp() << G4endl;
125 Dump( " CylSurface: " ); 133 Dump( " CylSurface: " );
126 } 134 }
127 #endif 135 #endif
128 136
129 return fradius - localPoint.perp(); 137 return fradius - localPoint.perp();
130 } 138 }
131 139
132 //-------------------------------------------- 140 //---------------------------------------------------------------------
133 141
134 G4ThreeVector G4ErrorCylSurfaceTarget:: 142 G4ThreeVector G4ErrorCylSurfaceTarget::
135 IntersectLocal( const G4ThreeVector& localPoin 143 IntersectLocal( const G4ThreeVector& localPoint,
136 const G4ThreeVector& localDir 144 const G4ThreeVector& localDir ) const
137 { 145 {
138 G4double eqa = localDir.x()*localDir.x()+loc 146 G4double eqa = localDir.x()*localDir.x()+localDir.y()*localDir.y();
139 G4double eqb = 2*(localPoint.x()*localDir.x( 147 G4double eqb = 2*(localPoint.x()*localDir.x()+localPoint.y()*localDir.y());
140 G4double eqc = -fradius*fradius+localPoint.x 148 G4double eqc = -fradius*fradius+localPoint.x()*localPoint.x()
141 +localPoint.y()*localPoint.y( 149 +localPoint.y()*localPoint.y();
142 G4int inside = (localPoint.perp() > fradius) 150 G4int inside = (localPoint.perp() > fradius) ? -1 : 1;
143 G4double lambda; 151 G4double lambda;
144 152
145 if( eqa*inside > 0. ) 153 if( eqa*inside > 0. )
146 { 154 {
147 lambda = (-eqb + std::sqrt(eqb*eqb-4*eqa*e 155 lambda = (-eqb + std::sqrt(eqb*eqb-4*eqa*eqc) ) / (2.*eqa);
148 } 156 }
149 else if( eqa*inside < 0. ) 157 else if( eqa*inside < 0. )
150 { 158 {
151 lambda = (-eqb - std::sqrt(eqb*eqb-4*eqa*e 159 lambda = (-eqb - std::sqrt(eqb*eqb-4*eqa*eqc) ) / (2.*eqa);
152 } 160 }
153 else 161 else
154 { 162 {
155 if( eqb != 0. ) 163 if( eqb != 0. )
156 { 164 {
157 lambda = -eqc/eqb; 165 lambda = -eqc/eqb;
158 } 166 }
159 else 167 else
160 { 168 {
161 std::ostringstream message; << 169 G4cerr << "WARNING - G4ErrorCylSurfaceTarget::IntersectLocal()" << G4endl
162 message << "Intersection not possible !" << 170 << " Point: " << localPoint << ", direction: "
163 << " Point: " << localP << 171 << localDir << G4endl;
164 << localDir; <<
165 Dump( " CylSurface: " ); 172 Dump( " CylSurface: " );
166 G4Exception("G4ErrorCylSurfaceTarget::In 173 G4Exception("G4ErrorCylSurfaceTarget::IntersectLocal()",
167 "GeomMgt1002", JustWarning, << 174 "IllegalCondition",
>> 175 JustWarning, "Intersection not possible !");
168 lambda = kInfinity; 176 lambda = kInfinity;
169 } 177 }
170 } 178 }
171 179
172 G4ThreeVector inters = localPoint + lambda*l 180 G4ThreeVector inters = localPoint + lambda*localDir/localDir.mag();
173 181
174 #ifdef G4VERBOSE 182 #ifdef G4VERBOSE
175 if(G4ErrorPropagatorData::verbose() >= 4 ) { 183 if(G4ErrorPropagatorData::verbose() >= 4 ) {
176 G4cout << " G4ErrorCylSurfaceTarget::Inter << 184 G4cout << " G4ErrorCylSurfaceTarget::IntersectLocal " << inters << " " << inters.perp() << " localPoint " << localPoint << " localDir " << localDir << G4endl;
177 << inters.perp() << " localPoint " <<
178 << 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 G4cerr << "WARNING - G4ErrorCylSurfaceTarget::GetTangentPlane()" << G4endl
198 message << "Local point not at surface !" << 204 << " Point: " << point << ", local: " << localPoint
199 << " Point: " << point << << 205 << G4endl
200 << G4endl << 206 << " is not at surface, but far away by: "
201 << " is not at surface, b << 207 << localPoint.perp() - fradius << " !" << G4endl;
202 << localPoint.perp() - fradius << <<
203 G4Exception("G4ErrorCylSurfaceTarget::GetT 208 G4Exception("G4ErrorCylSurfaceTarget::GetTangentPlane()",
204 "GeomMgt1002", JustWarning, me << 209 "IllegalCondition", JustWarning,
>> 210 "Local point not at surface !");
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