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G4GDMLWriteDefine.cc
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27 //
28 // class G4GDMLWriteDefine Implementation
29 //
30 // Original author: Zoltan Torzsok, November 2007
31 //
32 // --------------------------------------------------------------------
33 
34 #include "G4GDMLWriteDefine.hh"
35 #include "G4SystemOfUnits.hh"
36 
40 
42  : G4GDMLWrite(), defineElement(0)
43 {
44 }
45 
47 {
48 }
49 
51 {
52  G4double x,y,z;
53  G4RotationMatrix mat = mtx;
54  mat.rectify(); // Rectify matrix from possible roundoff errors
55 
56  // Direction of rotation given by left-hand rule; clockwise rotation
57 
58  static const G4double kMatrixPrecision = 10E-10;
59  const G4double cosb = std::sqrt(mtx.xx()*mtx.xx()+mtx.yx()*mtx.yx());
60 
61  if (cosb > kMatrixPrecision)
62  {
63  x = std::atan2(mtx.zy(),mtx.zz());
64  y = std::atan2(-mtx.zx(),cosb);
65  z = std::atan2(mtx.yx(),mtx.xx());
66  }
67  else
68  {
69  x = std::atan2(-mtx.yz(),mtx.yy());
70  y = std::atan2(-mtx.zx(),cosb);
71  z = 0.0;
72  }
73 
74  return G4ThreeVector(x,y,z);
75 }
76 
78 Scale_vectorWrite(xercesc::DOMElement* element, const G4String& tag,
79  const G4String& name, const G4ThreeVector& scl)
80 {
81  const G4double x = (std::fabs(scl.x()-1.0) < kRelativePrecision)
82  ? 1.0 : scl.x();
83  const G4double y = (std::fabs(scl.y()-1.0) < kRelativePrecision)
84  ? 1.0 : scl.y();
85  const G4double z = (std::fabs(scl.z()-1.0) < kRelativePrecision)
86  ? 1.0 : scl.z();
87 
88  xercesc::DOMElement* scaleElement = NewElement(tag);
89  scaleElement->setAttributeNode(NewAttribute("name",name));
90  scaleElement->setAttributeNode(NewAttribute("x",x));
91  scaleElement->setAttributeNode(NewAttribute("y",y));
92  scaleElement->setAttributeNode(NewAttribute("z",z));
93  element->appendChild(scaleElement);
94 }
95 
97 Rotation_vectorWrite(xercesc::DOMElement* element, const G4String& tag,
98  const G4String& name, const G4ThreeVector& rot)
99 {
100  const G4double x = (std::fabs(rot.x()) < kAngularPrecision) ? 0.0 : rot.x();
101  const G4double y = (std::fabs(rot.y()) < kAngularPrecision) ? 0.0 : rot.y();
102  const G4double z = (std::fabs(rot.z()) < kAngularPrecision) ? 0.0 : rot.z();
103 
104  xercesc::DOMElement* rotationElement = NewElement(tag);
105  rotationElement->setAttributeNode(NewAttribute("name",name));
106  rotationElement->setAttributeNode(NewAttribute("x",x/degree));
107  rotationElement->setAttributeNode(NewAttribute("y",y/degree));
108  rotationElement->setAttributeNode(NewAttribute("z",z/degree));
109  rotationElement->setAttributeNode(NewAttribute("unit","deg"));
110  element->appendChild(rotationElement);
111 }
112 
114 Position_vectorWrite(xercesc::DOMElement* element, const G4String& tag,
115  const G4String& name, const G4ThreeVector& pos)
116 {
117  const G4double x = (std::fabs(pos.x()) < kLinearPrecision) ? 0.0 : pos.x();
118  const G4double y = (std::fabs(pos.y()) < kLinearPrecision) ? 0.0 : pos.y();
119  const G4double z = (std::fabs(pos.z()) < kLinearPrecision) ? 0.0 : pos.z();
120 
121  xercesc::DOMElement* positionElement = NewElement(tag);
122  positionElement->setAttributeNode(NewAttribute("name",name));
123  positionElement->setAttributeNode(NewAttribute("x",x/mm));
124  positionElement->setAttributeNode(NewAttribute("y",y/mm));
125  positionElement->setAttributeNode(NewAttribute("z",z/mm));
126  positionElement->setAttributeNode(NewAttribute("unit","mm"));
127  element->appendChild(positionElement);
128 }
129 
130 void G4GDMLWriteDefine::DefineWrite(xercesc::DOMElement* element)
131 {
132 #ifdef G4VERBOSE
133  G4cout << "G4GDML: Writing definitions..." << G4endl;
134 #endif
135  defineElement = NewElement("define");
136  element->appendChild(defineElement);
137 }