1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
16 //-----------------------------------------------------------------
17 // Implementation of the alignment object class through
18 // the concrete representation of alignment object class
19 // AliAlignObjParams derived from the base class AliAlignObj
20 //-----------------------------------------------------------------
22 #include "AliAlignObj.h"
23 #include "AliAlignObjParams.h"
25 ClassImp(AliAlignObjParams)
27 //_____________________________________________________________________________
28 AliAlignObjParams::AliAlignObjParams() : AliAlignObj()
30 // default constructor
32 fTranslation[0]=fTranslation[1]=fTranslation[2]=0.;
33 fRotation[0]=fRotation[1]=fRotation[2]=0.;
36 //_____________________________________________________________________________
37 AliAlignObjParams::AliAlignObjParams(const char* symname, UShort_t volUId, Double_t x, Double_t y, Double_t z, Double_t psi, Double_t theta, Double_t phi, Bool_t global) throw (const Char_t *) : AliAlignObj(symname,volUId)
39 // standard constructor with 3 translation + 3 rotation parameters
40 // If the user explicitly sets the global variable to kFALSE then the
41 // parameters are interpreted as giving the local transformation.
42 // This requires to have a gGeoMenager active instance, otherwise the
43 // constructor will fail (no object created)
46 SetPars(x, y, z, psi, theta, phi);
48 if(!SetLocalPars(x,y,z,psi,theta,phi)) throw "Alignment object creation failed (TGeo instance needed)!\n";
52 //_____________________________________________________________________________
53 AliAlignObjParams::AliAlignObjParams(const char* symname, UShort_t volUId, TGeoMatrix& m, Bool_t global) throw (const Char_t *) : AliAlignObj(symname,volUId)
55 // standard constructor with TGeoMatrix
56 // If the user explicitly sets the global variable to kFALSE then the
57 // parameters are interpreted as giving the local transformation.
58 // This requires to have a gGeoMenager active instance, otherwise the
59 // constructor will fail (no object created)
62 if (!SetMatrix(m)) throw "Alignment object creation failed (can't extract roll-pitch-yall angles from the matrix)!\n";
65 if (!SetLocalPars(fTranslation[0],fTranslation[1],fTranslation[2],fRotation[0],fRotation[1],fRotation[2])) throw "Alignment object creation failed (TGeo instance needed)!\n";
69 //_____________________________________________________________________________
70 AliAlignObjParams::AliAlignObjParams(const AliAlignObj& theAlignObj) :
71 AliAlignObj(theAlignObj)
76 theAlignObj.GetTranslation(tr);
77 SetTranslation(tr[0],tr[1],tr[2]);
79 if (theAlignObj.GetAngles(rot))
80 SetRotation(rot[0],rot[1],rot[2]);
83 //_____________________________________________________________________________
84 AliAlignObjParams &AliAlignObjParams::operator =(const AliAlignObj& theAlignObj)
86 // assignment operator
88 if(this==&theAlignObj) return *this;
89 ((AliAlignObj *)this)->operator=(theAlignObj);
92 theAlignObj.GetTranslation(tr);
93 SetTranslation(tr[0],tr[1],tr[2]);
95 if (theAlignObj.GetAngles(rot))
96 SetRotation(rot[0],rot[1],rot[2]);
101 //_____________________________________________________________________________
102 AliAlignObjParams::~AliAlignObjParams()
104 // default destructor
108 //_____________________________________________________________________________
109 void AliAlignObjParams::SetTranslation(const TGeoMatrix& m)
111 // set the translation parameters extracting them from the matrix
112 // passed as argument
114 if(m.IsTranslation()){
115 const Double_t* tr = m.GetTranslation();
116 fTranslation[0]=tr[0]; fTranslation[1]=tr[1]; fTranslation[2]=tr[2];
118 fTranslation[0] = fTranslation[1] = fTranslation[2] = 0.;
122 //_____________________________________________________________________________
123 Bool_t AliAlignObjParams::SetRotation(const TGeoMatrix& m)
125 // set the rotation parameters extracting them from the matrix
126 // passed as argument
129 const Double_t* rot = m.GetRotationMatrix();
130 return MatrixToAngles(rot,fRotation);
132 fRotation[0] = fRotation[1] = fRotation[2] = 0.;
137 //_____________________________________________________________________________
138 void AliAlignObjParams::GetMatrix(TGeoHMatrix& m) const
140 // get the transformation matrix from the data memebers parameters
141 m.SetTranslation(&fTranslation[0]);
143 AnglesToMatrix(fRotation,rot);
147 //_____________________________________________________________________________
148 AliAlignObj& AliAlignObjParams::Inverse() const
150 // Return a temporary "inverse" of the alignment object, that is return
151 // an object with inverted transformation matrix.
153 static AliAlignObjParams a;
158 a.SetMatrix(m.Inverse());