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25 //
26 // G4GDMLWriteDefine implementation
27 //
28 // Author: Zoltan Torzsok, November 2007
29 // --------------------------------------------------------------------
30
31 #include "G4GDMLWriteDefine.hh"
32 #include "G4SystemOfUnits.hh"
33
34 const G4double G4GDMLWriteDefine::kRelativePrecision = DBL_EPSILON;
35 const G4double G4GDMLWriteDefine::kAngularPrecision = DBL_EPSILON;
36 const G4double G4GDMLWriteDefine::kLinearPrecision = DBL_EPSILON;
37
38 // --------------------------------------------------------------------
39 G4GDMLWriteDefine::G4GDMLWriteDefine()
40 : G4GDMLWrite()
41 {
42 }
43
44 // --------------------------------------------------------------------
45 G4GDMLWriteDefine::~G4GDMLWriteDefine()
46 {
47 }
48
49 // --------------------------------------------------------------------
50 G4ThreeVector G4GDMLWriteDefine::GetAngles(const G4RotationMatrix& mtx)
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
77 // --------------------------------------------------------------------
78 void G4GDMLWriteDefine::Scale_vectorWrite(xercesc::DOMElement* element,
79 const G4String& tag,
80 const G4String& name,
81 const G4ThreeVector& scl)
82 {
83 const G4double x =
84 (std::fabs(scl.x() - 1.0) < kRelativePrecision) ? 1.0 : scl.x();
85 const G4double y =
86 (std::fabs(scl.y() - 1.0) < kRelativePrecision) ? 1.0 : scl.y();
87 const G4double z =
88 (std::fabs(scl.z() - 1.0) < kRelativePrecision) ? 1.0 : scl.z();
89
90 xercesc::DOMElement* scaleElement = NewElement(tag);
91 scaleElement->setAttributeNode(NewAttribute("name", name));
92 scaleElement->setAttributeNode(NewAttribute("x", x));
93 scaleElement->setAttributeNode(NewAttribute("y", y));
94 scaleElement->setAttributeNode(NewAttribute("z", z));
95 element->appendChild(scaleElement);
96 }
97
98 // --------------------------------------------------------------------
99 void G4GDMLWriteDefine::Rotation_vectorWrite(xercesc::DOMElement* element,
100 const G4String& tag,
101 const G4String& name,
102 const G4ThreeVector& rot)
103 {
104 const G4double x = (std::fabs(rot.x()) < kAngularPrecision) ? 0.0 : rot.x();
105 const G4double y = (std::fabs(rot.y()) < kAngularPrecision) ? 0.0 : rot.y();
106 const G4double z = (std::fabs(rot.z()) < kAngularPrecision) ? 0.0 : rot.z();
107
108 xercesc::DOMElement* rotationElement = NewElement(tag);
109 rotationElement->setAttributeNode(NewAttribute("name", name));
110 rotationElement->setAttributeNode(NewAttribute("x", x / degree));
111 rotationElement->setAttributeNode(NewAttribute("y", y / degree));
112 rotationElement->setAttributeNode(NewAttribute("z", z / degree));
113 rotationElement->setAttributeNode(NewAttribute("unit", "deg"));
114 element->appendChild(rotationElement);
115 }
116
117 // --------------------------------------------------------------------
118 void G4GDMLWriteDefine::Position_vectorWrite(xercesc::DOMElement* element,
119 const G4String& tag,
120 const G4String& name,
121 const G4ThreeVector& pos)
122 {
123 const G4double x = (std::fabs(pos.x()) < kLinearPrecision) ? 0.0 : pos.x();
124 const G4double y = (std::fabs(pos.y()) < kLinearPrecision) ? 0.0 : pos.y();
125 const G4double z = (std::fabs(pos.z()) < kLinearPrecision) ? 0.0 : pos.z();
126
127 xercesc::DOMElement* positionElement = NewElement(tag);
128 positionElement->setAttributeNode(NewAttribute("name", name));
129 positionElement->setAttributeNode(NewAttribute("x", x / mm));
130 positionElement->setAttributeNode(NewAttribute("y", y / mm));
131 positionElement->setAttributeNode(NewAttribute("z", z / mm));
132 positionElement->setAttributeNode(NewAttribute("unit", "mm"));
133 element->appendChild(positionElement);
134 }
135
136 // --------------------------------------------------------------------
137 void G4GDMLWriteDefine::DefineWrite(xercesc::DOMElement* element)
138 {
139 #ifdef G4VERBOSE
140 G4cout << "G4GDML: Writing definitions..." << G4endl;
141 #endif
142 defineElement = NewElement("define");
143 element->appendChild(defineElement);
144 }
145