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G4ErrorPlaneSurfaceTarget.cc
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25 //
26 // G4ErrorPlaneSurfaceTarget class implementation
27 //
28 // Created: P.Arce, September 2004
29 // --------------------------------------------------------------------
30 
32 
33 #ifdef G4VERBOSE
34 #include "G4ErrorPropagatorData.hh" // for verbosity checking
35 #endif
36 
37 #include "G4Point3D.hh"
38 #include "G4ThreeVector.hh"
39 
40 //---------------------------------------------------------------------
41 
44  : G4Plane3D( aa, ab, ac, ad )
45 {
47 
48 #ifdef G4VERBOSE
50  {
51  Dump( " $$$ creating G4ErrorPlaneSurfaceTarget from parameters");
52  }
53 #endif
54 }
55 
56 //---------------------------------------------------------------------
57 
60  : G4Plane3D( norm, pt )
61 {
63 
64 #ifdef G4VERBOSE
66  {
67  Dump( " $$$ creating G4ErrorPlaneSurfaceTarget from point and normal");
68  }
69 #endif
70 }
71 
72 //---------------------------------------------------------------------
73 
76  const G4Point3D &p2,
77  const G4Point3D &p3)
78  : G4Plane3D( p1, p2, p3 )
79 {
81 
82 #ifdef G4VERBOSE
84  {
85  Dump( " $$$ creating G4ErrorPlaneSurfaceTarget from three points");
86  }
87 #endif
88 }
89 
90 //---------------------------------------------------------------------
91 
93 {
94 }
95 
96 //---------------------------------------------------------------------
97 
99 Intersect( const G4ThreeVector& pt, const G4ThreeVector& dir ) const
100 {
101  G4double lam = GetDistanceFromPoint( pt, dir );
102  G4Point3D inters = pt + lam * dir;
103 
104 #ifdef G4VERBOSE
106  {
107  G4cout << " $$$ creating G4ErrorPlaneSurfaceTarget::Intersect "
108  << inters << G4endl;
109  }
110 #endif
111 
112  return inters;
113 }
114 
115 //---------------------------------------------------------------------
116 
119 {
120  if( std::fabs( dir.mag() -1. ) > 1.E-6 )
121  {
122  std::ostringstream message;
123  message << "Direction is not a unit vector: " << dir << " !";
124  G4Exception("G4ErrorPlaneSurfaceTarget::GetDistanceFromPoint()",
125  "GeomMgt1002", JustWarning, message);
126  }
127  G4double dist = -(a_ * pt.x() + b_ * pt.y() + c_ * pt.z() + d_)
128  / (a_ * dir.x() + b_ * dir.y() + c_ * dir.z() );
129 
130 #ifdef G4VERBOSE
132  {
133  G4cout << " G4ErrorPlaneSurfaceTarget::GetDistanceFromPoint()" << G4endl
134  << " Point: " << pt << ", Direction: " << dir << G4endl
135  << " Distance: " << dist << G4endl;
136  }
137 #endif
138 
139  return dist;
140 }
141 
142 //---------------------------------------------------------------------
143 
146 {
147  G4ThreeVector vec = point() - pt;
148  G4double dist = std::fabs(vec * normal() / normal().mag());
149 
150 #ifdef G4VERBOSE
152  {
153  G4cout << " G4ErrorPlaneSurfaceTarget::GetDistanceFromPoint()" << G4endl
154  << " Point: " << pt << G4endl
155  << " Distance: " << dist << G4endl;
156  }
157 #endif
158 
159  return dist;
160 }
161 
162 //---------------------------------------------------------------------
163 
166 {
167  return *this;
168 }
169 
170 //---------------------------------------------------------------------
171 
173 {
174  G4cout << msg << " point = " << point()
175  << " normal = " << normal() << G4endl;
176 }