/data/refman/pasoursint/CMSSW_5_3_0/src/L1Trigger/CSCTrackFinder/src/CSCTFTrackBuilder.cc

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#include <L1Trigger/CSCTrackFinder/src/CSCTFTrackBuilder.h>

#include <FWCore/MessageLogger/interface/MessageLogger.h>

#include <DataFormats/MuonDetId/interface/CSCDetId.h>
#include <DataFormats/MuonDetId/interface/CSCTriggerNumbering.h>
#include <DataFormats/L1DTTrackFinder/interface/L1MuDTChambPhContainer.h>

#include <DataFormats/L1CSCTrackFinder/interface/CSCTriggerContainer.h>
#include <L1Trigger/CSCTrackFinder/interface/CSCTFSectorProcessor.h>

#include "CondFormats/L1TObjects/interface/L1MuCSCTFConfiguration.h"
#include "CondFormats/DataRecord/interface/L1MuCSCTFConfigurationRcd.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include <sstream>
#include <stdlib.h>

CSCTFTrackBuilder::CSCTFTrackBuilder(const edm::ParameterSet& pset, bool TMB07,
                                     const L1MuTriggerScales* scales,
                                     const L1MuTriggerPtScale* ptScale ){
  m_minBX = pset.getParameter<int>("MinBX");
  m_maxBX = pset.getParameter<int>("MaxBX");

  for(int e = CSCDetId::minEndcapId(); e <= CSCDetId::maxEndcapId(); ++e)
    {
      for(int s = CSCTriggerNumbering::minTriggerSectorId();
          s <= CSCTriggerNumbering::maxTriggerSectorId(); ++s)
        {
          // All SPs work with the same configuration (impossible to make it more exclusive in this framework)
          my_SPs[e-1][s-1] = new CSCTFSectorProcessor(e, s, pset, TMB07,
                                                      scales, ptScale);
        }
    }
}

void CSCTFTrackBuilder::initialize(const edm::EventSetup& c){
 //my_dtrc->initialize(c);
        for(int e = CSCDetId::minEndcapId(); e <= CSCDetId::maxEndcapId(); ++e)
        {
                for(int s = CSCTriggerNumbering::minTriggerSectorId(); s <= CSCTriggerNumbering::maxTriggerSectorId(); ++s)
                {
                        my_SPs[e-1][s-1]->initialize(c);
                }
        }
}

CSCTFTrackBuilder::~CSCTFTrackBuilder()
{
  for(int e = CSCDetId::minEndcapId(); e <= CSCDetId::maxEndcapId(); ++e)
    {
      for(int s = CSCTriggerNumbering::minTriggerSectorId();
          s <= CSCTriggerNumbering::maxTriggerSectorId(); ++s)
        {
          delete my_SPs[e-1][s-1];
          my_SPs[e-1][s-1] = NULL;
        }
    }
}

void CSCTFTrackBuilder::buildTracks(const CSCCorrelatedLCTDigiCollection* lcts, 
                                    const CSCTriggerContainer<csctf::TrackStub>* dtstubss, //const L1MuDTChambPhContainer* dttrig,
                                    L1CSCTrackCollection* trkcoll, CSCTriggerContainer<csctf::TrackStub>* stubs_to_dt)
{
  std::vector<csc::L1Track> trks;
  CSCTriggerContainer<csctf::TrackStub> stub_list;

  CSCCorrelatedLCTDigiCollection::DigiRangeIterator Citer;

  for(Citer = lcts->begin(); Citer != lcts->end(); Citer++)
    {
      CSCCorrelatedLCTDigiCollection::const_iterator Diter = (*Citer).second.first;
      CSCCorrelatedLCTDigiCollection::const_iterator Dend = (*Citer).second.second;

          for(; Diter != Dend; Diter++)
        {
          csctf::TrackStub theStub((*Diter),(*Citer).first);
          stub_list.push_back(theStub);
        }
    }

  // Now we append the track stubs the the DT Sector Collector
  // after processing from the DT Receiver.

//  CSCTriggerContainer<csctf::TrackStub> dtstubs = my_dtrc->process(dttrig);
//  stub_list.push_many(dtstubs);
  stub_list.push_many(*dtstubss);

  // run each sector processor in the TF
  for(int e = CSCDetId::minEndcapId(); e <= CSCDetId::maxEndcapId(); ++e)
  {
      for(int s = CSCTriggerNumbering::minTriggerSectorId();
        s <= CSCTriggerNumbering::maxTriggerSectorId(); ++s)
      {
         CSCTriggerContainer<csctf::TrackStub> current_e_s = stub_list.get(e, s);
         int spReturnValue = my_SPs[e-1][s-1]->run(current_e_s);
         if(spReturnValue == -1) //Major Error, returning with empty Coll's
         {
           trkcoll->clear();
           stubs_to_dt->clear();
           return;
         }
         else if(spReturnValue)
         {
           std::vector<csc::L1Track> theTracks = my_SPs[e-1][s-1]->tracks().get();
           trks.insert(trks.end(), theTracks.begin(), theTracks.end());
         }
         stubs_to_dt->push_many(my_SPs[e-1][s-1]->dtStubs()); // send stubs whether or not we find a track!!!
      }
  }

  // Now to combine tracks with their track stubs and send them off.
  trkcoll->resize(trks.size());
  std::vector<csc::L1Track>::const_iterator titr = trks.begin();
  L1CSCTrackCollection::iterator tcitr = trkcoll->begin();

  for(; titr != trks.end(); titr++)
    {
      tcitr->first = (*titr);
      std::vector<csctf::TrackStub> possible_stubs = my_SPs[titr->endcap()-1][titr->sector()-1]->filteredStubs();
      std::vector<csctf::TrackStub>::const_iterator tkstbs = possible_stubs.begin();

      int me1ID    = titr->me1ID();
      int me2ID    = titr->me2ID();
      int me3ID    = titr->me3ID();
      int me4ID    = titr->me4ID();
      int mb1ID    = titr->mb1ID();
      int me1delay = titr->me1Tbin();
      int me2delay = titr->me2Tbin();
      int me3delay = titr->me3Tbin();
      int me4delay = titr->me4Tbin();
      int mb1delay = titr->mb1Tbin();
      // BX analyzer: some stub could be delayed by BXA so that all the stubs will run through the core at the same BX;
      //  then there is a rule of "second earlies LCT": resulting track will be placed at BX of the "second earliest LCT";
      //  in the end there are two parameters in place: the delay by BXA w.r.t to the last LCT and track tbin assignment
      std::map< int, std::list<int> > timeline;
      if( me1ID ) timeline[me1delay].push_back(1);
      if( me2ID ) timeline[me2delay].push_back(2);
      if( me3ID ) timeline[me3delay].push_back(3);
      if( me4ID ) timeline[me4delay].push_back(4);
      int earliest_tbin=0, second_earliest_tbin=0;
      for(int bx=7; bx>=0; bx--){
         std::list<int>::const_iterator iter = timeline[bx].begin();
         while( iter != timeline[bx].end() ){
            if( earliest_tbin==0 ) earliest_tbin=bx;
            else if( second_earliest_tbin==0 ) second_earliest_tbin=bx;
            iter++;
         }
      }
      // Core's input was loaded in a relative time window BX=[0-7)
      // To relate it to time window of tracks (centred at BX=0) we introduce a shift:
      int shift   = (m_maxBX + m_minBX)/2 - m_minBX + m_minBX;
      int me1Tbin = titr->bx() - me1delay + second_earliest_tbin + shift;
      int me2Tbin = titr->bx() - me2delay + second_earliest_tbin + shift;
      int me3Tbin = titr->bx() - me3delay + second_earliest_tbin + shift;
      int me4Tbin = titr->bx() - me4delay + second_earliest_tbin + shift;
      int mb1Tbin = titr->bx() - mb1delay + second_earliest_tbin + shift;

      for(; tkstbs != possible_stubs.end(); tkstbs++)
        {
          switch(tkstbs->station())
            {
            case 1:
              if((tkstbs->getMPCLink()
                  +(3*(CSCTriggerNumbering::triggerSubSectorFromLabels(CSCDetId(tkstbs->getDetId().rawId())) - 1))) == me1ID && me1ID != 0 && me1Tbin == tkstbs->BX() )
                {
                  tcitr->second.insertDigi(CSCDetId(tkstbs->getDetId().rawId()), *(tkstbs->getDigi()));
                }
              break;
            case 2:
              if(tkstbs->getMPCLink() == me2ID && me2ID != 0 && me2Tbin == tkstbs->BX() )
                {
                  tcitr->second.insertDigi(CSCDetId(tkstbs->getDetId().rawId()), *(tkstbs->getDigi()));
                }
              break;
            case 3:
              if(tkstbs->getMPCLink() == me3ID && me3ID != 0 && me3Tbin == tkstbs->BX() )
                {
                  tcitr->second.insertDigi(CSCDetId(tkstbs->getDetId().rawId()), *(tkstbs->getDigi()));
                }
              break;
            case 4:
              if(tkstbs->getMPCLink() == me4ID && me4ID != 0 && me4Tbin == tkstbs->BX() )
                {
                  tcitr->second.insertDigi(CSCDetId(tkstbs->getDetId().rawId()), *(tkstbs->getDigi()));
                }
              break;
            case 5:
              if(tkstbs->getMPCLink() == mb1ID && mb1ID != 0 && mb1Tbin == tkstbs->BX() )
              {
              }
              break;
            default:
              edm::LogWarning("CSCTFTrackBuilder::buildTracks()") << "SERIOUS ERROR: STATION " << tkstbs->station() << " NOT IN RANGE [1,5]\n";
            };
        }
      tcitr++; // increment to next track in the collection
    }

}