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18 /* History of cvs commits:
21 * Revision 1.3 2007/05/17 17:13:32 kharlov
22 * Coding convensions satisfied (T.Pocheptsov)
24 * Revision 1.1 2007/04/19 15:47:20 kharlov
25 * Add misalignment of strip units with AliPHOSSurvey class
29 // Objects of this class read txt file with survey (photogrammetry) data
30 // and convert the data into AliAlignObjAngles of alignable PHOS volumes.
31 // It can be used as a base class, you need to override GetStripTransformation.
32 // AliPHOSSurvey inherits TObject only to use AliLog "functions".
33 // Author: Timur Pocheptsov (JINR)
37 #include <TClonesArray.h>
38 #include <TGeoManager.h>
42 #include "AliPHOSEMCAGeometry.h"
43 #include "AliAlignObjAngles.h"
44 #include "AliPHOSGeometry.h"
45 #include "AliPHOSSurvey.h"
48 ClassImp(AliPHOSSurvey)
50 //____________________________________________________________________________
51 AliPHOSSurvey::AliPHOSSurvey()
55 //Default constructor.
60 struct AliPHOSStripCoords {
61 Double_t fX1; //x coordinate of the first strip point
62 Double_t fZ1; //z coordinate of the first strip point
63 Double_t fX2; //x coordinate of the second strip point
64 Double_t fZ2; //z coordinate of the second strip point
69 //____________________________________________________________________________
70 AliPHOSSurvey::AliPHOSSurvey(const TString &txtFileName)
74 //Read survey data from txt file.
75 const AliPHOSGeometry *phosGeom = AliPHOSGeometry::GetInstance("IHEP", "IHEP");
77 AliError("Cannot obtain AliPHOSGeometry instance.");
81 std::ifstream inputFile(txtFileName.Data());
83 AliError(("Cannot open the survey file " + txtFileName).Data());
87 AliPHOSEMCAGeometry * emcaGeom = phosGeom->GetEMCAGeometry();
88 fStrNum = emcaGeom->GetNStripX() * emcaGeom->GetNStripZ();
89 const Float_t *strip = emcaGeom->GetStripHalfSize();
90 const Float_t *cell = emcaGeom->GetSteelCellHalfSize();
92 AliPHOSStripCoords *idealStrips = new AliPHOSStripCoords[fStrNum];//1
93 for (Int_t ix = 0, stripNumber = 0; ix < emcaGeom->GetNStripX(); ++ix) {
94 for (Int_t iz = 0; iz < emcaGeom->GetNStripZ(); ++iz) {
95 AliPHOSStripCoords &str = idealStrips[stripNumber++];
96 str.fX1 = ix * 2 * strip[0];
97 str.fX2 = str.fX1 + 14 * cell[0];
98 str.fZ1 = iz * 2 * strip[2];
99 str.fZ2 = str.fZ1 + 2 * cell[2];
104 Double_t dummyY = 0.;
105 Double_t *xReal = new Double_t[fStrNum * 2];//2
106 Double_t *zReal = new Double_t[fStrNum * 2];//3
108 for (Int_t i = 0; i < fStrNum * 2; ++i) {
110 AliError("Error while reading input file.");
111 delete [] idealStrips;
116 inputFile>>dummyInt>>xReal[i]>>dummyY>>zReal[i];
121 AliPHOSStripCoords *realStrips = new AliPHOSStripCoords[fStrNum];//4
123 for (Int_t j = 0, stripNumber = 0; j < emcaGeom->GetNStripX() * 2; j += 2) {
124 for (Int_t i = 0; i < emcaGeom->GetNStripZ(); ++i) {
125 AliPHOSStripCoords &str = realStrips[stripNumber++];
126 str.fX1 = xReal[i + j * emcaGeom->GetNStripZ()];
127 str.fZ1 = zReal[i + j * emcaGeom->GetNStripZ()];
128 str.fX2 = xReal[i + (j + 1) * emcaGeom->GetNStripZ()];
129 str.fZ2 = zReal[i + (j + 1) * emcaGeom->GetNStripZ()];
133 fStripData = new AliPHOSStripDelta[fStrNum];
135 for (Int_t i = 0; i < fStrNum; ++i) {
136 const AliPHOSStripCoords &real = realStrips[i];
137 const AliPHOSStripCoords &ideal = idealStrips[i];
138 AliPHOSStripDelta &t = fStripData[i];
139 t.fTheta = TMath::ATan((real.fZ2 - real.fZ1) / (real.fX2 - real.fX1)) -
140 TMath::ATan((ideal.fZ2 - ideal.fZ1) / (ideal.fX2 - ideal.fX1));
141 t.fTheta *= TMath::RadToDeg();
142 t.fXShift = (real.fX1 + real.fX2) / 2 - (ideal.fX1 + ideal.fX2) / 2;
143 t.fZShift = (real.fZ1 + real.fZ2) / 2 - (ideal.fZ1 + ideal.fZ2) / 2;
144 t.fYShift = 0., t.fPsi = 0., t.fPhi = 0.;
147 delete [] realStrips;
150 delete [] idealStrips;
153 //____________________________________________________________________________
154 AliPHOSSurvey::~AliPHOSSurvey()
156 delete [] fStripData;
159 //____________________________________________________________________________
160 void AliPHOSSurvey::CreateAliAlignObjAngles(TClonesArray &array)
162 //Create AliAlignObjAngles.
163 const AliPHOSGeometry * phosGeom = AliPHOSGeometry::GetInstance("IHEP", "IHEP");
165 AliError("Cannot obtain AliPHOSGeometry instance.");
170 AliWarning("Cannot create local transformations for strip units - gGeoManager does not exist.");
171 AliInfo("Null shifts and rotations will be created instead.");
172 return CreateNullObjects(array, phosGeom);
175 AliPHOSEMCAGeometry * emcaGeom = phosGeom->GetEMCAGeometry();
176 Int_t arrayInd = array.GetEntries(), iIndex = 0;
177 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
178 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,iIndex);
180 for (Int_t module = 1; module <= phosGeom->GetNModules(); ++module) {
181 for (Int_t i = 0, stripNum = 0; i < emcaGeom->GetNStripX(); ++i) {
182 for (Int_t j = 0; j < emcaGeom->GetNStripZ(); ++j) {
183 TString stripName(TString::Format("PHOS/Module%d/Strip_%d_%d", module, i, j));
184 AliPHOSStripDelta t(GetStripTransformation(stripNum++, module));
187 stripName.Data(), volid,
188 t.fXShift, t.fYShift, t.fZShift,
189 -t.fPsi, -t.fTheta, -t.fPhi,
198 //____________________________________________________________________________
199 void AliPHOSSurvey::CreateNullObjects(TClonesArray &array, const AliPHOSGeometry *phosGeom)const
201 //Create null shifts and rotations.
202 const AliPHOSEMCAGeometry * emcaGeom = phosGeom->GetEMCAGeometry();
203 Int_t arrayInd = array.GetEntries(), iIndex = 0;
204 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
205 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,iIndex);
207 for (Int_t module = 1; module <= phosGeom->GetNModules(); ++module)
208 for (Int_t i = 0; i < emcaGeom->GetNStripX(); ++i)
209 for (Int_t j = 0; j < emcaGeom->GetNStripZ(); ++j) {
210 TString stripName(TString::Format("PHOS/Module%d/Strip_%d_%d", module, i, j));
211 new(array[arrayInd]) AliAlignObjAngles(stripName.Data(), volid, 0., 0., 0., 0., 0., 0., true);
216 //____________________________________________________________________________
217 AliPHOSSurvey::AliPHOSStripDelta AliPHOSSurvey::GetStripTransformation(Int_t stripIndex, Int_t module)const
219 //Strip 'stripIndex' transformation.
220 AliPHOSStripDelta t = {0., 0., 0., 0., 0., 0.};
221 if (module != 3 || !fStripData)
223 return fStripData[stripIndex];