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18 /* History of cvs commits:
21 * Revision 1.4 2007/05/17 17:34:54 kharlov
22 * Merging differences if v1.2 and 1.3
24 * Revision 1.3 2007/05/17 17:13:32 kharlov
25 * Coding convensions satisfied (T.Pocheptsov)
27 * Revision 1.1 2007/04/19 15:47:20 kharlov
28 * Add misalignment of strip units with AliPHOSSurvey class
32 // Objects of this class read txt file with survey (photogrammetry) data
33 // and convert the data into AliAlignObjAngles of alignable PHOS volumes.
34 // It can be used as a base class, you need to override GetStripTransformation.
35 // AliPHOSSurvey inherits TObject only to use AliLog "functions".
36 // Author: Timur Pocheptsov (JINR)
40 #include <TClonesArray.h>
41 #include <TGeoManager.h>
45 #include "AliSurveyObj.h"
47 #include "AliPHOSEMCAGeometry.h"
48 #include "AliAlignObjAngles.h"
49 #include "AliPHOSGeometry.h"
50 #include "AliPHOSSurvey.h"
53 ClassImp(AliPHOSSurvey)
55 //____________________________________________________________________________
56 AliPHOSSurvey::AliPHOSSurvey()
60 //Default constructor.
65 struct AliPHOSStripCoords {
66 Double_t fX1; //x coordinate of the first strip point
67 Double_t fZ1; //z coordinate of the first strip point
68 Double_t fX2; //x coordinate of the second strip point
69 Double_t fZ2; //z coordinate of the second strip point
74 //____________________________________________________________________________
75 AliPHOSSurvey::AliPHOSSurvey(const TString &txtFileName)
79 //Read survey data from txt file.
80 const AliPHOSGeometry *phosGeom = AliPHOSGeometry::GetInstance("IHEP", "IHEP");
82 AliError("Cannot obtain AliPHOSGeometry instance.");
86 std::ifstream inputFile(txtFileName.Data());
88 AliError(("Cannot open the survey file " + txtFileName).Data());
92 AliPHOSEMCAGeometry * emcaGeom = phosGeom->GetEMCAGeometry();
93 fStrNum = emcaGeom->GetNStripX() * emcaGeom->GetNStripZ();
97 Double_t *xReal = new Double_t[fStrNum * 2];//2
98 Double_t *zReal = new Double_t[fStrNum * 2];//3
100 for (Int_t i = 0; i < fStrNum * 2; ++i) {
102 AliError("Error while reading input file.");
107 inputFile>>dummyInt>>xReal[i]>>dummyY>>zReal[i];
112 InitStripData(xReal, zReal);
118 //____________________________________________________________________________
119 AliPHOSSurvey::~AliPHOSSurvey()
121 delete [] fStripData;
124 //____________________________________________________________________________
125 void AliPHOSSurvey::CreateAliAlignObjAngles(TClonesArray &array)
127 //Create AliAlignObjAngles.
128 const AliPHOSGeometry * phosGeom = AliPHOSGeometry::GetInstance("IHEP", "IHEP");
130 AliError("Cannot obtain AliPHOSGeometry instance.");
135 AliWarning("Cannot create local transformations for strip units - gGeoManager does not exist.");
136 AliInfo("Null shifts and rotations will be created instead.");
137 return CreateNullObjects(array, phosGeom);
140 AliPHOSEMCAGeometry * emcaGeom = phosGeom->GetEMCAGeometry();
141 Int_t arrayInd = array.GetEntries(), iIndex = 0;
142 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
143 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,iIndex);
145 for (Int_t module = 1; module <= phosGeom->GetNModules(); ++module) {
146 for (Int_t i = 0, stripNum = 0; i < emcaGeom->GetNStripX(); ++i) {
147 for (Int_t j = 0; j < emcaGeom->GetNStripZ(); ++j) {
148 TString stripName(TString::Format("PHOS/Module%d/Strip_%d_%d", module, i, j));
149 AliPHOSStripDelta t(GetStripTransformation(stripNum++, module));
152 stripName.Data(), volid,
153 t.fXShift, t.fYShift, t.fZShift,
154 -t.fPsi, -t.fTheta, -t.fPhi,
163 //____________________________________________________________________________
164 void AliPHOSSurvey::CreateNullObjects(TClonesArray &array, const AliPHOSGeometry *phosGeom)const
166 //Create null shifts and rotations.
167 const AliPHOSEMCAGeometry * emcaGeom = phosGeom->GetEMCAGeometry();
168 Int_t arrayInd = array.GetEntries(), iIndex = 0;
169 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
170 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,iIndex);
172 for (Int_t module = 1; module <= phosGeom->GetNModules(); ++module)
173 for (Int_t i = 0; i < emcaGeom->GetNStripX(); ++i)
174 for (Int_t j = 0; j < emcaGeom->GetNStripZ(); ++j) {
175 TString stripName(TString::Format("PHOS/Module%d/Strip_%d_%d", module, i, j));
176 new(array[arrayInd]) AliAlignObjAngles(stripName.Data(), volid, 0., 0., 0., 0., 0., 0., true);
181 //____________________________________________________________________________
182 AliPHOSSurvey::AliPHOSStripDelta AliPHOSSurvey::GetStripTransformation(Int_t stripIndex, Int_t module)const
184 //Strip 'stripIndex' transformation.
185 AliPHOSStripDelta t = {0., 0., 0., 0., 0., 0.};
186 if (module != 3 || !fStripData)
188 return fStripData[stripIndex];
191 //____________________________________________________________________________
192 void AliPHOSSurvey::InitStripData(const Double_t *xReal, const Double_t *zReal)
194 const AliPHOSGeometry *phosGeom = AliPHOSGeometry::GetInstance("IHEP", "IHEP");
195 AliPHOSEMCAGeometry * emcaGeom = phosGeom->GetEMCAGeometry();
196 const Float_t *strip = emcaGeom->GetStripHalfSize();
197 const Float_t *cell = emcaGeom->GetSteelCellHalfSize();
199 AliPHOSStripCoords *idealStrips = new AliPHOSStripCoords[fStrNum];//1
200 for (Int_t ix = 0, stripNumber = 0; ix < emcaGeom->GetNStripX(); ++ix) {
201 for (Int_t iz = 0; iz < emcaGeom->GetNStripZ(); ++iz) {
202 AliPHOSStripCoords &str = idealStrips[stripNumber++];
203 str.fX1 = ix * 2 * strip[0];
204 str.fX2 = str.fX1 + 14 * cell[0];
205 str.fZ1 = iz * 2 * strip[2];
206 str.fZ2 = str.fZ1 + 2 * cell[2];
210 AliPHOSStripCoords *realStrips = new AliPHOSStripCoords[fStrNum];//4
211 for (Int_t j = 0, stripNumber = 0; j < emcaGeom->GetNStripX() * 2; j += 2) {
212 for (Int_t i = 0; i < emcaGeom->GetNStripZ(); ++i) {
213 AliPHOSStripCoords &str = realStrips[stripNumber++];
214 str.fX1 = xReal[i + j * emcaGeom->GetNStripZ()];
215 str.fZ1 = zReal[i + j * emcaGeom->GetNStripZ()];
216 str.fX2 = xReal[i + (j + 1) * emcaGeom->GetNStripZ()];
217 str.fZ2 = zReal[i + (j + 1) * emcaGeom->GetNStripZ()];
221 fStripData = new AliPHOSStripDelta[fStrNum];
223 for (Int_t i = 0; i < fStrNum; ++i) {
224 const AliPHOSStripCoords &real = realStrips[i];
225 const AliPHOSStripCoords &ideal = idealStrips[i];
226 AliPHOSStripDelta &t = fStripData[i];
227 t.fTheta = TMath::ATan((real.fZ2 - real.fZ1) / (real.fX2 - real.fX1)) -
228 TMath::ATan((ideal.fZ2 - ideal.fZ1) / (ideal.fX2 - ideal.fX1));
229 t.fTheta *= TMath::RadToDeg();
230 t.fXShift = (real.fX1 + real.fX2) / 2 - (ideal.fX1 + ideal.fX2) / 2;
231 t.fZShift = (real.fZ1 + real.fZ2) / 2 - (ideal.fZ1 + ideal.fZ2) / 2;
232 t.fYShift = 0., t.fPsi = 0., t.fPhi = 0.;
235 delete [] realStrips;
236 delete [] idealStrips;