ATLAS Offline Software
CscSegmentMaker.cxx
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1 /*
2  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
3 */
4 
5 
6 #include "MuonReadoutGeometry/CscReadoutElement.h"
7 #include "MuonReadoutGeometry/MuonDetectorManager.h"
8 
9 #include "CscSegmentMaker.h"
10 #include "AthenaBaseComps/AthMsgStreamMacros.h"
11 
12 #include "GeoPrimitives/GeoPrimitives.h"
13 #include "xAODTrigMuon/TrigMuonDefs.h"
14 #include <cmath>
15 
16 
17 namespace TrigL2MuonSA {
18 
19 
20 CscSegmentMaker::CscSegmentMaker(const std::string& type, const std::string& name, const IInterface* parent)
21  : AthAlgTool(type, name, parent),
22  m_util()
23 {
24 }
25 
26 
27 StatusCode CscSegmentMaker::initialize(){
28  ATH_CHECK(m_cscregdict.retrieve());
29  ATH_CHECK(m_muDetMgrKey.initialize());
30  ATH_CHECK(m_idHelperSvc.retrieve());
31  return StatusCode::SUCCESS;
32 }
33 
34 
35 ReturnCode CscSegmentMaker::FindSuperPointCsc( const TrigL2MuonSA::CscHits &cscHits,
36  std::vector<TrigL2MuonSA::TrackPattern> &v_trackPatterns,
37  const TrigL2MuonSA::TgcFitResult &tgcFitResult,
38  const TrigL2MuonSA::MuonRoad &muroad) const
39 {
40  ATH_MSG_DEBUG( "FindSuperPointCsc" );
41  SG::ReadCondHandle<MuonGM::MuonDetectorManager> muDetMgrHandle{m_muDetMgrKey};
42  const MuonGM::MuonDetectorManager* muDetMgr = muDetMgrHandle.cptr();
43 
44  if( !cscHits.empty() ){
45 
46  for (TrigL2MuonSA::TrackPattern& track : v_trackPatterns) { // loop for track candidates
47 
48  //get module hash to read
49  int hash_clusters[32]={0};
50 
51  TrigL2MuonSA::CscHits clusters[32][8];
52  for(unsigned int iclu=0; iclu<cscHits.size(); ++iclu){
53  const TrigL2MuonSA::CscHitData &cscHit = cscHits[iclu];
54 
55  //outlier or not
56  double width = (cscHit.MeasuresPhi == 0 ) ? m_max_residual_eta : m_max_residual_phi;
57  if ( width < std::abs(cscHit.Residual) ) continue;
58 
59 
60  int cathodelayer = 2*(cscHit.WireLayer-1)+ cscHit.MeasuresPhi;//cathodelayer is in [0,7]
61  int module_hash = m_cscregdict->get_hash(cscHit.StationName, cscHit.StationEta, cscHit.StationPhi);
62 
63  if(0<=module_hash && 32>module_hash){
64  clusters[module_hash][cathodelayer].push_back( cscHit );
65  hash_clusters[module_hash]=1;//set modules to read
66  }else{
67  continue;
68  }
69  }//for clusters
70 
71 
72  //decide which module to read
73  int hashSPs[2]={999,999};
74  if( getModuleSP( hashSPs, tgcFitResult, track.phiBin, muroad, hash_clusters)!=ReturnCode::FAILURE ){
75 
76  bool found_segment=false;
77  for(int ihash=0; ihash<2; ++ihash){
78  if(found_segment) break;//once a segment is found, then finish searching more
79 
80  int hashSP=hashSPs[ihash];
81  if(hashSP>32) continue;
82 
83  //making segment
84  CscSegment cscsegment, cscsegment_noip;
85  if (this->make_segment(hashSP, clusters[hashSP] , cscsegment, cscsegment_noip, muDetMgr) != ReturnCode::FAILURE ){
86  found_segment=true;
87  track.hashID_CSC = hashSP;
88 
89  xAOD::L2MuonParameters::Chamber csc = xAOD::L2MuonParameters::Chamber::CSC;
90  xAOD::L2MuonParameters::Chamber outer = xAOD::L2MuonParameters::Chamber::EndcapOuter;
91  TrigL2MuonSA::SuperPoint* superPoint = &(track.superPoints[csc]);
92  const TrigL2MuonSA::SuperPoint* outerSP = &(track.superPoints[outer]);
93  bool &large_dphidz = track.large_dPhidZ;
94  double &outerCorFactor = track.outerCorFactor;
95 
96  //tgcfitresult
97  double tgcmid1z = tgcFitResult.tgcMid1[3];
98  double tgcmid2z = tgcFitResult.tgcMid2[3];
99  double phimiddle = tgcFitResult.phi;
100  double dPhidz = tgcFitResult.dPhidZ;
101  if( 0.75e-6<std::abs(dPhidz) ) large_dphidz=true;
102  double tgcmidZ = (tgcmid1z+tgcmid2z)/2.;
103  double outerz = outerSP->Z;
104 
105  //calculate SP
106  CscSegment cscsegment_ext = segmentAtFirstLayer(hashSP, &cscsegment);
107  double phiMod = m_cscregdict->phiMod(hashSP);
108  double CSCR=cscsegment_ext.x()*std::cos(phiMod)+cscsegment_ext.y()*std::sin(phiMod);
109  double CSCZ=cscsegment_ext.z();
110  double PhiAtCsc = phimiddle/* - std::abs(CSCZ-tgcmidZ)*dPhidz*/;
111  double CSCSPR = CSCR/std::cos( m_util.calc_dphi(PhiAtCsc,phiMod) );
112 
113 
114  superPoint->Z = CSCZ;
115  superPoint->R = CSCSPR;
116  superPoint->Alin = cscsegment_ext.slopeRZ();
117  superPoint->Blin = cscsegment_ext.interceptRZ();
118  superPoint->Npoint = cscsegment_ext.nHitEta();
119  superPoint->Chi2 = cscsegment_ext.chiSquare();
120  ATH_MSG_DEBUG("CSC super point:hashID=" << hashSP
121  << ",CSCR=" << CSCSPR << ",CSCZ=" << CSCZ
122  << ",Slope=" << cscsegment_ext.slopeRZ() << ",Intercept=" << cscsegment_ext.interceptRZ()
123  << ",nHitsEta=" << cscsegment_ext.nHitEta() << ",Chi2="<< cscsegment_ext.chiSquare());
124 
125  //calculate outerSP's correction (dphidz of tgcFitResult)
126  double phiouter = phimiddle+std::abs(outerz-tgcmidZ)*dPhidz;
127  outerCorFactor = std::cos( m_util.calc_dphi(phiouter,phiMod) )/std::cos( m_util.calc_dphi(phimiddle,phiMod) );
128  ATH_MSG_DEBUG("outerCorFactor=" << outerCorFactor);
129 
130  }//if there is a segment.
131  }//ihash loop over modules in which segment will be made
132  }//if there is the module in which segment will be made.
133  }//loop over track pattern candidate
134  }//if there are clusters, then make a segment
135 
136 
137  return ReturnCode::SUCCESS;
138 }
139 
140 
141 
142 
143 // cppcheck-suppress passedByValue
144 ReturnCode CscSegmentMaker::make_segment(int mod_hash, TrigL2MuonSA::CscHits clusters[8],
145  CscSegment &cscsegment,
146  CscSegment &cscsegment_noip, const MuonGM::MuonDetectorManager* muDetMgr) const
147 {
148  ATH_MSG_DEBUG("################################## make_segment #####################################");
149 
150  std::vector<localCscHit> hits_loc_eta[4], hits_loc_phi[4],emp;
151  emp.clear();
152  for(int i =0;i<4;++i){
153  hits_loc_eta[i]=emp;
154  hits_loc_phi[i]=emp;
155  }
156 
157 
158 
159  Amg::Transform3D gToLocal;
160  if(m_use_geometry){
161  Identifier Id = m_idHelperSvc->cscIdHelper().channelID(m_cscregdict->stationName(mod_hash), m_cscregdict->stationEta(mod_hash),m_cscregdict->stationPhi(mod_hash),2/*chamberLayer*/, 1, 0, 1);
162  const MuonGM::CscReadoutElement *csc = muDetMgr->getCscReadoutElement(Id);
163  if (csc == NULL){
164  ATH_MSG_DEBUG( "Csc Readout Element not found ---- skip");
165  return ReturnCode::FAILURE;
166  }
167  ATH_MSG_DEBUG("CscReadoutElement");
168  gToLocal = csc->GlobalToAmdbLRSTransform();
169  }else{
170  double rotpi = (m_cscregdict->stationEta(mod_hash)>0) ? -M_PI/2. : M_PI/2.;
171  Amg::AngleAxis3D rotZamg( (-1)*(m_cscregdict->phiMod(mod_hash)), Amg::Vector3D(0,0,1));
172  Amg::AngleAxis3D rotYamg( (-1)*(m_cscregdict->actualAtanNormal(mod_hash)), Amg::Vector3D(0,1,0) );
173  Amg::AngleAxis3D rotPIamg( rotpi, Amg::Vector3D(0,0,1));
174  Amg::Translation3D translation( 0.0, 0.0, (-1)*(m_cscregdict->displacement(mod_hash)) );
175  gToLocal=translation*rotPIamg*rotYamg*rotZamg;
176  }
177 
178 
179  localCscHit ip_loc;
180  Amg::Vector3D ip_vec = gToLocal*Amg::Vector3D(0.0, 0.0, 0.0);
181  ip_loc.loc_x = ip_vec(Amg::x);
182  ip_loc.loc_y = ip_vec(Amg::y);
183  ip_loc.loc_z = ip_vec(Amg::z);
184  ip_loc.measphi = -1;
185  ip_loc.error = m_err_ip;
186  ip_loc.residual = 0.;
187  ip_loc.isIP = true;
188  ip_loc.enabled = false;
189  ip_loc.stationname = 0;
190 
191  for (unsigned int clyr=0; clyr<8; ++clyr) {
192  for (unsigned int ihit=0; ihit<clusters[clyr].size(); ++ihit) {
193 
194  TrigL2MuonSA::CscHitData &cschit = clusters[clyr][ihit];
195  double r = cschit.r;
196  double phi = cschit.phi;
197  double z = cschit.z;
198 
199  //move to local coordinate system
200  Amg::Vector3D vect(r*std::cos(phi),r*std::sin(phi),z);
201  Amg::Vector3D loc_vect = gToLocal*vect;
202 
203  //building localCscHit object
204  localCscHit loc_hit;
205  loc_hit.loc_x = loc_vect(Amg::x);
206  loc_hit.loc_y = loc_vect(Amg::y);
207  loc_hit.loc_z = loc_vect(Amg::z);
208  loc_hit.measphi=cschit.MeasuresPhi;
209  loc_hit.error = (loc_hit.measphi==0) ? m_err_eta : m_err_phi;
210  loc_hit.residual = cschit.Residual;
211  loc_hit.enabled=true;
212  loc_hit.isIP=false;
213  loc_hit.stationname=cschit.StationName;
214  ATH_MSG_DEBUG( "measphi=" << cschit.MeasuresPhi << " wirelyr=" << cschit.WireLayer << " x=" << loc_hit.loc_x << " y=" << loc_hit.loc_y << " z=" << loc_hit.loc_z << " err=" << loc_hit.error << " res=" << loc_hit.residual);
215 
216 
217  if(0==loc_hit.measphi) {
218  if(m_max_residual_eta>std::abs(loc_hit.residual)) hits_loc_eta[cschit.WireLayer-1].push_back( loc_hit );
219  }
220  if(1==loc_hit.measphi) {
221  if(m_max_residual_phi>std::abs(loc_hit.residual)) hits_loc_phi[cschit.WireLayer-1].push_back( loc_hit );
222  }
223  }//ihit
224  }//clyr
225 
226  Amg::Vector3D seg_pos_loc, seg_dir_loc,seg_pos_loc_noip, seg_dir_loc_noip;
227  int nhite=0,nhitp=0;
228  local2dSegment seg2d_eta ,seg2d_phi, seg2d_eta_noip, seg2d_phi_noip;
229 
230 
231  if( this->make_2dsegment( 0/*=measphi*/, ip_loc, hits_loc_eta, seg2d_eta, seg2d_eta_noip, nhite)!=ReturnCode::SUCCESS ) return ReturnCode::FAILURE;
232  if( this->make_2dsegment( 1/*=measphi*/, ip_loc, hits_loc_phi, seg2d_phi,seg2d_phi_noip, nhitp)!=ReturnCode::SUCCESS ) return ReturnCode::FAILURE;
233 
234 
235  ATH_MSG_DEBUG("==include IP==");
236  if( this->make_4dsegment(seg2d_eta,seg2d_phi,seg_pos_loc,seg_dir_loc)!=ReturnCode::SUCCESS ) return ReturnCode::FAILURE;
237  ATH_MSG_DEBUG("==exclude IP==");
238  if( this->make_4dsegment(seg2d_eta_noip,seg2d_phi_noip,seg_pos_loc_noip,seg_dir_loc_noip)!=ReturnCode::SUCCESS ) return ReturnCode::FAILURE;
239 
240 
241  Amg::Transform3D lToGlobal = gToLocal.inverse();
242  Amg::Vector3D seg_pos = lToGlobal*seg_pos_loc;
243  Amg::Vector3D seg_dir = lToGlobal.rotation()*seg_dir_loc;
244  Amg::Vector3D seg_pos_noip = lToGlobal*seg_pos_loc_noip;
245  Amg::Vector3D seg_dir_noip = lToGlobal.rotation()*seg_dir_loc_noip;
246 
247 
248  //building CscSegment objects
249  cscsegment.set(seg_pos,seg_dir, seg2d_eta.chi2, seg2d_phi.chi2);
250  cscsegment.setNHitEta(seg2d_eta.nhit);
251  cscsegment.setNHitPhi(seg2d_phi.nhit);
252  cscsegment_noip.set(seg_pos_noip,seg_dir_noip, seg2d_eta_noip.chi2, seg2d_phi_noip.chi2);
253  cscsegment_noip.setNHitEta(seg2d_eta_noip.nhit);
254  cscsegment_noip.setNHitPhi(seg2d_phi_noip.nhit);
255 
256 
257  return ReturnCode::SUCCESS;
258 }
259 
260 
261 // cppcheck-suppress passedByValue
262  ReturnCode CscSegmentMaker::make_2dsegment(int measphi, const localCscHit &ip_loc, const std::vector<localCscHit> hits_loc[4],
263  local2dSegment &seg2d,
264  local2dSegment &seg2d_ipremoved,
265  int &nhit) const
266 {
267 
268  int nohit=0;
269  std::vector<int> hit_lyr;
270  hit_lyr.clear();
271 
272  //counting layers without clusters
273  for (int i=0; i<4; ++i ){
274  if( 0==hits_loc[i].size() ) ++nohit;
275  }
276 
277  std::vector<local2dSegment> seg2d_4hitCollection,seg2d_3hitCollection;
278  seg2d_4hitCollection.clear(); seg2d_3hitCollection.clear();
279  std::vector<localCscHit> hits_loc_copy[4];
280  for (int i=0;i<4;++i) hits_loc_copy[i] = hits_loc[i];
281 
282 
283  if(0==nohit){
284 
285  if( this->make_2dseg4hit(measphi, ip_loc, hits_loc_copy, seg2d_4hitCollection, nhit)!=ReturnCode::SUCCESS ) return ReturnCode::FAILURE;
286  //hits already used are removed in hits_loc_copy
287  ATH_MSG_DEBUG("display hits left");
288  display_hits(hits_loc_copy);
289  if( this->make_2dseg3hit(measphi, ip_loc, hits_loc_copy, seg2d_3hitCollection, nhit)!=ReturnCode::SUCCESS ) return ReturnCode::FAILURE;
290 
291  } else if(1==nohit) {
292 
293  if( this->make_2dseg3hit(measphi, ip_loc, hits_loc_copy, seg2d_3hitCollection, nhit)!=ReturnCode::SUCCESS ) return ReturnCode::FAILURE;
294 
295  } else {
296  return ReturnCode::FAILURE;
297  }
298 
299  //select the segment nearest to tgcroad.
300  bool exist=false;
301  seg2d.residual=99999.;
302  for(unsigned int iseg4=0; iseg4< seg2d_4hitCollection.size(); ++iseg4){
303 
304  if( std::abs( seg2d_4hitCollection[iseg4].residual ) < std::abs(seg2d.residual) ){
305  seg2d=seg2d_4hitCollection[iseg4];
306  exist=true;
307  ATH_MSG_DEBUG("seg2d.residual=" << seg2d.residual);
308  }
309  }
310  for(unsigned int iseg3=0; iseg3< seg2d_3hitCollection.size(); ++iseg3){
311 
312  if( std::abs( seg2d_3hitCollection[iseg3].residual ) < std::abs(seg2d.residual) ){
313  seg2d=seg2d_3hitCollection[iseg3];
314  exist=true;
315  ATH_MSG_DEBUG("seg2d.residual=" << seg2d.residual);
316  }
317  }
318 
319  if(false==exist) return ReturnCode::FAILURE;
320 
321  if( this->fit_clusters(measphi,seg2d.localHits,seg2d_ipremoved)!=ReturnCode::SUCCESS ) return ReturnCode::FAILURE;
322 
323  return ReturnCode::SUCCESS;
324 
325 }
326 
327 ReturnCode CscSegmentMaker::make_2dseg4hit(int measphi, const localCscHit &ip_loc,
328  std::vector<localCscHit> hits_loc[4], //removing hits used in fit with 4 hits
329  std::vector<local2dSegment> &seg2d_4hitCollection,
330  int &nhit) const
331 {
332 
333  std::vector<localCscHit> hit_fit;
334 
335  for (unsigned int ihit0=0; ihit0<hits_loc[0].size(); ++ihit0) {
336  for (unsigned int ihit1=0; ihit1<hits_loc[1].size(); ++ihit1) {
337  for (unsigned int ihit2=0; ihit2<hits_loc[2].size(); ++ihit2) {
338  for (unsigned int ihit3=0; ihit3<hits_loc[3].size(); ++ihit3) {
339 
340  // set clusters
341  hit_fit.clear();
342  hit_fit.push_back(ip_loc);
343  hit_fit.push_back(hits_loc[0][ihit0]);
344  hit_fit.push_back(hits_loc[1][ihit1]);
345  hit_fit.push_back(hits_loc[2][ihit2]);
346  hit_fit.push_back(hits_loc[3][ihit3]);
347 
348  //segment fit
349  local2dSegment seg2d_tmp;
350  if( this->fit_clusters(measphi,hit_fit,seg2d_tmp)!=ReturnCode::SUCCESS ) continue;
351 
352 
353  if(seg2d_tmp.chi2<m_max_chisquare){
354  seg2d_tmp.localHits.push_back(hits_loc[0][ihit0]);
355  seg2d_tmp.localHits.push_back(hits_loc[1][ihit1]);
356  seg2d_tmp.localHits.push_back(hits_loc[2][ihit2]);
357  seg2d_tmp.localHits.push_back(hits_loc[3][ihit3]);
358  //disable hits
359  hits_loc[0][ihit0].enabled=false;
360  hits_loc[1][ihit1].enabled=false;
361  hits_loc[2][ihit2].enabled=false;
362  hits_loc[3][ihit3].enabled=false;
363 
364  seg2d_4hitCollection.push_back(seg2d_tmp);
365  ATH_MSG_DEBUG("4hitsegment was made");
366  }
367 
368  }
369  }
370  }
371  }//loop over all combination of 4hits
372 
373 
374  //make vector of hits left unused
375  std::vector<localCscHit> hit_loc_left[4];
376  for (unsigned int ilyr=0;ilyr<4; ++ilyr){
377  for(unsigned int ihit=0; ihit < hits_loc[ilyr].size(); ++ihit){
378 
379  if ( true==hits_loc[ilyr][ihit].enabled ){
380  hit_loc_left[ilyr].push_back(hits_loc[ilyr][ihit]);
381  }
382  }//loop over hits in layer
383  }//loop over wire layer
384 
385  for(int ilyr=0; ilyr<4; ++ilyr) hits_loc[ilyr]=hit_loc_left[ilyr];//copying "objects" of vector
386 
387  nhit=4;
388 
389  return ReturnCode::SUCCESS;
390 
391 }
392 
393 
394 ReturnCode CscSegmentMaker::make_2dseg3hit(int measphi, const localCscHit &ip_loc,
395  // cppcheck-suppress passedByValue
396  const std::vector<localCscHit> hits_loc[4],
397  std::vector<local2dSegment> &seg2d_3hitCollection,
398  int &nhit) const
399 {
400 
401  int empty_lyr=-1;
402  int nohit=0;
403  for (int ilyr=0; ilyr<4; ++ilyr ){
404  if( 0==hits_loc[ilyr].size() ){
405  ++nohit;
406  empty_lyr=ilyr;
407  }
408  }
409 
410  if ( 1<nohit ) return ReturnCode::SUCCESS;
411 
412  std::vector<localCscHit> hit_fit;
413 
414 
415  int hit_lyrA[4] = {1, 2, 3, 0};
416  int hit_lyrB[4] = {2, 3, 0, 1};
417  int hit_lyrC[4] = {3, 0, 1, 2};
418 
419  for(int lyrcomb=0; lyrcomb<4; ++lyrcomb){
420 
421  if(0<=empty_lyr && empty_lyr!=lyrcomb) continue;
422 
423  for (unsigned int ihitA=0; ihitA<hits_loc[hit_lyrA[lyrcomb]].size(); ++ihitA) {
424  for (unsigned int ihitB=0; ihitB<hits_loc[hit_lyrB[lyrcomb]].size(); ++ihitB) {
425  for (unsigned int ihitC=0; ihitC<hits_loc[hit_lyrC[lyrcomb]].size(); ++ihitC) {
426 
427  hit_fit.clear();
428  hit_fit.push_back(ip_loc);
429  hit_fit.push_back(hits_loc[hit_lyrA[lyrcomb]][ihitA]);
430  hit_fit.push_back(hits_loc[hit_lyrB[lyrcomb]][ihitB]);
431  hit_fit.push_back(hits_loc[hit_lyrC[lyrcomb]][ihitC]);
432 
433  //fit clusters
434  local2dSegment seg2d_tmp;
435 
436  if( this->fit_clusters(measphi,hit_fit,seg2d_tmp)!=ReturnCode::SUCCESS ) continue;//for eta
437 
438  if(seg2d_tmp.chi2<2.0*m_max_chisquare/3.0){
439  seg2d_tmp.localHits.push_back(hits_loc[hit_lyrA[lyrcomb]][ihitA]);
440  seg2d_tmp.localHits.push_back(hits_loc[hit_lyrB[lyrcomb]][ihitB]);
441  seg2d_tmp.localHits.push_back(hits_loc[hit_lyrC[lyrcomb]][ihitC]);
442  seg2d_3hitCollection.push_back(seg2d_tmp);
443  ATH_MSG_DEBUG("3hitsegment was made");
444  }
445  }
446  }
447  }
448  }//loop over layer combination
449  nhit=3;
450 
451 
452  return ReturnCode::SUCCESS;
453 }
454 
455 
456 ReturnCode CscSegmentMaker::fit_clusters(int measphi, const std::vector<localCscHit> &hits_fit, local2dSegment &seg2d) const{
457 
458 
459  double S=0.;
460  double Sx=0.;
461  double Sy=0.;
462  double aStt=0.;
463  int nhit=0;
464  int nhit_with_ip=0;
465  double Stt=0.;
466  double Syy=0.;
467  double Sxx=0.;
468  double Sxy=0.;
469  double a = 0.;
470  double b = 0.;
471  double rp=0.;
472  double rq=0.;
473  double aver_res=0.;
474 
475 
476  for (unsigned int ihit=0; ihit< hits_fit.size(); ++ihit) {
477 
478 
479  double x= hits_fit[ihit].loc_z;
480  double y= (measphi==0) ? hits_fit[ihit].loc_y : hits_fit[ihit].loc_x;
481  double err= hits_fit[ihit].error;
482  double w = 1./(err*err);
483  // ATH_MSG_DEBUG("local pos, z=" << hits_fit[ihit].loc_z << ", x,y=" << y << ", err=" << err << ", w=" << w << ", res=" << hits_fit[ihit].residual << ", measphi="<< hits_fit[ihit].measphi);
484  S += w;
485  Sx += w*x;
486  Sy += w*y;
487  if( !hits_fit[ihit].isIP ){
488  seg2d.stationname=hits_fit[ihit].stationname;
489  aver_res += w*hits_fit[ihit].residual;
490  rq += w;
491  rp += w*x;
492  ++nhit;
493  }
494  ++nhit_with_ip;
495  }//ihit
496  seg2d.zshift=rp/rq;
497 
498  seg2d.residual=aver_res/rq;
499 
500 
501  for (unsigned int ihit=0; ihit< hits_fit.size(); ++ihit) {
502 
503  double x= hits_fit[ihit].loc_z;
504  double y= (measphi==0) ? hits_fit[ihit].loc_y : hits_fit[ihit].loc_x;
505  double err = hits_fit[ihit].error;
506  double w = 1./(err*err);// (ihit==0)?0.25:100.;//
507  Stt += w*(x-Sx/S)*(x-Sx/S);
508  aStt += w*y*(x-Sx/S);
509  Sxx += w*x*x;
510  Syy += w*y*y;
511  Sxy += w*x*y;
512 
513  }//ihit
514 
515 
516 
517  if(nhit_with_ip>1){
518  a = seg2d.a = aStt/Stt;
519  b = seg2d.b = (Sy-Sx*a)/S;
520  seg2d.nhit = nhit;
521 
522  }else{
523  return ReturnCode::FAILURE;
524  }
525  seg2d.chi2 = Syy + a*a*Sxx + 2*b*a*Sx + b*b*S - 2*b*Sy - 2*a*Sxy;
526 
527  ATH_MSG_DEBUG( "fit: a=" << a << " b=" << b << " chi2=" << seg2d.chi2 );
528 
529  return ReturnCode::SUCCESS;
530 }
531 
532 
533 
534 ReturnCode CscSegmentMaker::make_4dsegment(const local2dSegment &seg2d_eta,
535  const local2dSegment &seg2d_phi,
536  Amg::Vector3D &seg_pos,
537  Amg::Vector3D &seg_dir) const
538 {
539 
540  int nhit_e=seg2d_eta.nhit;
541  int nhit_p=seg2d_phi.nhit;
542  double a_eta=seg2d_eta.a;
543  double b_eta=seg2d_eta.b;
544  double a_phi=seg2d_phi.a;
545  double b_phi=seg2d_phi.b;
546  double rzshift=seg2d_eta.zshift;
547  double phizshift=seg2d_phi.zshift;
548 
549 
550  if (nhit_e<2 || nhit_p<2 ) return ReturnCode::FAILURE;
551 
552 
553 
554  ATH_MSG_DEBUG("rzshift=" << rzshift << " phizshift=" << phizshift << " diff=" << (rzshift-phizshift)
555  << " angle=" << ( 0.5*M_PI - std::atan(a_phi) ) << " b_phi=" << b_phi /*<< " Newb_phi=" << Newb_phi*/ );
556 
557 
558  double norm = std::sqrt( a_phi*a_phi + a_eta*a_eta + 1 );
559 
560 
561 
562  seg_dir = Amg::Vector3D(a_phi/norm, a_eta/norm, 1./norm);
563  ATH_MSG_DEBUG("segdir_loc (px,py,pz)=" << "(" << seg_dir(Amg::px) << "," << seg_dir(Amg::py) << "," << seg_dir(Amg::pz) << ") a_eta="
564  << a_eta << " a_phi=" << a_phi << " chi2_eta=" << seg2d_eta.chi2 << " chi2_phi=" << seg2d_phi.chi2 );
565 
566  double aver_z=0.5*(rzshift+phizshift);
567 
568 
569  ATH_MSG_DEBUG(" new aver_z=" << aver_z );
570  seg_pos = Amg::Vector3D(seg_dir(Amg::px)*aver_z/seg_dir(Amg::pz) + b_phi, seg_dir(Amg::py)*aver_z/seg_dir(Amg::z) + b_eta, aver_z);
571 
572  ATH_MSG_DEBUG( "myseg_loc (x,y,z,px,py,pz)=(" << seg_pos(Amg::x) << "," << seg_pos(Amg::y) << "," << seg_pos(Amg::z)
573  << "," << seg_dir(Amg::px) << "," << seg_dir(Amg::py) << "," << seg_dir(Amg::pz) << ")");
574 
575  return ReturnCode::SUCCESS;
576 
577 }
578 
579 
580 
581 ReturnCode CscSegmentMaker::getModuleSP(int mod_hashes[2],
582  const TrigL2MuonSA::TgcFitResult &tgcFitResult,
583  int phibin,
584  const MuonRoad &muroad,
585  const int hash_clusters[32]) const
586 {
587  ATH_MSG_DEBUG("getModuleSP()");
588 
589 
590  for(unsigned int imod=0; imod<32;++imod){
591 
592  if( 0==hash_clusters[imod] ) continue;
593  int stationeta = m_cscregdict->stationEta(imod);
594  int side = (muroad.side) ? 1 : -1;
595  double phiMod = m_cscregdict->phiMod(imod);
596  double dphi = m_util.calc_dphi(phiMod, tgcFitResult.phi);
597  ATH_MSG_DEBUG("getModuleSP()::(phi,side) modlue:(" << phiMod << "," << stationeta << ") tgcroad:(" << tgcFitResult.phi << "," << side << ")");
598  if( std::abs(dphi)>M_PI/8. || side != stationeta) continue;
599 
600 
601  if(7!=phibin){
602 
603  if(imod<16 && phibin>7){//small normal
604  mod_hashes[0]=imod;
605  } else if( imod >=16 && phibin<7){//large normal
606  mod_hashes[0]=imod;
607  } else {//overlap
608  mod_hashes[1]=imod;
609  }
610 
611  } else if (7==phibin) {
612 
613  if(imod<16 && 1==muroad.LargeSmall ){//small normal
614  mod_hashes[0]=imod;
615  } else if( imod >=16 && 0== muroad.LargeSmall){//large normal
616  mod_hashes[0]=imod;
617  } else {//overlap
618  mod_hashes[1]=imod;
619  }
620 
621  }
622  }//for imod
623  ATH_MSG_DEBUG("getModuleSP::Normal sector=" << mod_hashes[0] << " overlap sector=" << mod_hashes[1]);
624 
625  return ReturnCode::SUCCESS;
626 
627 
628 }
629 
630 
631 CscSegment CscSegmentMaker::segmentAtFirstLayer(int mod_hash, TrigL2MuonSA::CscSegment *mu_seg) const{
632 
633 
634  double alpha = m_cscregdict->displacement(mod_hash);
635  Amg::Vector3D n = m_cscregdict->nomalVector(mod_hash);
636  double a0=mu_seg->px(), a1=mu_seg->py(), a2=mu_seg->pz();
637  double b0=mu_seg->x(), b1=mu_seg->y(),b2=mu_seg->z();
638  double t = ( alpha-(n(0)*b0+n(1)*b1+n(2)*b2) )/( n(0)*a0+n(1)*a1+n(2)*a2 );
639  double x0=a0*t+b0,x1=a1*t+b1,x2=a2*t+b2;
640  double chisquare=mu_seg->chiSquare();
641  double chisquare_phi=mu_seg->chiSquarePhi();
642 
643  CscSegment cscsegment;
644  cscsegment.set(x0,x1,x2,a0,a1,a2,chisquare, chisquare_phi);
645  cscsegment.setNHitEta(mu_seg->nHitEta());
646  cscsegment.setNHitPhi(mu_seg->nHitPhi());
647 
648  return cscsegment;
649 }
650 
651 
652 
653 // cppcheck-suppress passedByValue
654 ReturnCode CscSegmentMaker::display_hits(const std::vector<localCscHit> localHits[4]) const
655 {
656  for(unsigned int ilyr=0; ilyr<4; ++ilyr){
657  for (unsigned int ihit=0; ihit<localHits[ilyr].size(); ++ihit) {
658  const localCscHit &locHit = localHits[ilyr][ihit];
659  ATH_MSG_DEBUG("measphi=" << locHit.measphi << " wirelyr=" << ilyr+1
660  << " x=" << locHit.loc_x << " y=" << locHit.loc_y << " z=" << locHit.loc_z
661  << " err=" << locHit.error << " res=" << locHit.residual);
662  }
663  }
664 
665  return ReturnCode::SUCCESS;
666 }
667 
668 
669 
670 CscSegment::CscSegment(){
671 
672  m_x=0.;
673  m_y=0.;
674  m_z=0.;
675  m_px=0.;
676  m_py=0.;
677  m_pz=0.;
678  m_slopeRZ=0.;
679  m_interceptRZ=0.;
680  m_nhit_eta=0;
681  m_nhit_phi=0;
682  m_chisquare=0.;
683  m_chisquare_phi=0.;
684 }
685 
686 ReturnCode CscSegment::set(double x, double y, double z, double px, double py, double pz, double chisquare, double chisquare_phi)
687 {
688 
689  m_x=x;
690  m_y=y;
691  m_z=z;
692  m_px=px;
693  m_py=py;
694  m_pz=pz;
695  double r = std::sqrt( x*x + y*y );
696  m_slopeRZ = ( px*x+py*y )/( r*pz );
697  m_interceptRZ = r - slopeRZ()*z;
698  m_chisquare = chisquare;
699  m_chisquare_phi = chisquare_phi;
700 
701  return ReturnCode::SUCCESS;
702 
703 }
704 
705 ReturnCode CscSegment::set( Amg::Vector3D &seg_pos, Amg::Vector3D &seg_dir, double chisquare, double chisquare_phi)
706 {
707 
708  m_x = seg_pos(Amg::x);
709  m_y = seg_pos(Amg::y);
710  m_z = seg_pos(Amg::z);
711  m_px = seg_dir(Amg::px);
712  m_py = seg_dir(Amg::py);
713  m_pz = seg_dir(Amg::pz);
714  double r = std::sqrt( x()*x() + y()*y() );
715  m_slopeRZ = ( px()*x()+py()*y() )/( r*pz() );
716  m_interceptRZ = r - slopeRZ()*z();
717  m_chisquare = chisquare;
718  m_chisquare_phi = chisquare_phi;
719 
720  return ReturnCode::SUCCESS;
721 
722 }
723 
724 
725 
726 bool CscSegment::isClean(){
727 
728  bool eta_clean=false;
729  bool phi_clean=false;
730 
731  if (m_nhit_eta>1&&m_nhit_eta<5) eta_clean = true;
732  if (m_nhit_phi>1&&m_nhit_phi<5) phi_clean = true;
733 
734  return eta_clean && phi_clean;
735 
736 }
737 
738 
739 }//namespace TrigL2MuonSA
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