/data/refman/pasoursint/CMSSW_4_1_8_patch13/src/RecoEgamma/EgammaElectronAlgos/src/PixelMatchNextLayers.cc

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// -*- C++ -*-
//
// Package:    EgammaElectronAlgos
// Class:      PixelMatchNextLayers
// 
//
// Original Author:  Ursula Berthon, Claude Charlot
//         Created:  Mon Mar 27 13:22:06 CEST 2006
// $Id: PixelMatchNextLayers.cc,v 1.14 2009/05/27 14:08:23 fabiocos Exp $
//
//

#include "TrackingTools/DetLayers/interface/DetLayer.h"
#include "TrackingTools/DetLayers/interface/BarrelDetLayer.h"
#include "TrackingTools/DetLayers/interface/ForwardDetLayer.h"
#include "TrackingTools/PatternTools/interface/TrajectoryMeasurement.h" 
#include "TrackingTools/MeasurementDet/interface/LayerMeasurements.h" 
#include "TrackingTools/MaterialEffects/interface/PropagatorWithMaterial.h"
#include "RecoEgamma/EgammaElectronAlgos/interface/BarrelMeasurementEstimator.h"
#include "RecoEgamma/EgammaElectronAlgos/interface/ForwardMeasurementEstimator.h"
#include "RecoEgamma/EgammaElectronAlgos/interface/PixelMatchNextLayers.h"

#include "DataFormats/MuonDetId/interface/DTLayerId.h"
#include "DataFormats/SiPixelDetId/interface/PXBDetId.h"
#include "DataFormats/SiPixelDetId/interface/PXFDetId.h"
#include "DataFormats/SiStripDetId/interface/TIBDetId.h"
#include "DataFormats/SiStripDetId/interface/TOBDetId.h"
#include "DataFormats/SiStripDetId/interface/TIDDetId.h"
#include "DataFormats/SiStripDetId/interface/TECDetId.h"
#include "DataFormats/SiStripDetId/interface/StripSubdetector.h"
#include "DataFormats/SiPixelDetId/interface/PixelSubdetector.h"

#include <iostream> 
#include <algorithm>

 
PixelMatchNextLayers::PixelMatchNextLayers(const LayerMeasurements * theLayerMeasurements,const DetLayer* ilayer, 
                                           FreeTrajectoryState & aFTS,
                                           const PropagatorWithMaterial *aProp,  
                                           const BarrelMeasurementEstimator *aBarrelMeas,
                                           const ForwardMeasurementEstimator *aForwardMeas,
                                           bool searchInTIDTEC)
 {

  typedef std::vector<TrajectoryMeasurement>::const_iterator aMeas;
  std::vector<const DetLayer*> allayers;
  std::vector<const DetLayer*> nl = ilayer->nextLayers( aFTS, alongMomentum);
  for (std::vector<const DetLayer*>::const_iterator il = nl.begin(); il != nl.end(); il++) {
    allayers.push_back(*il);
    std::vector<const DetLayer*> n2l = (*il)->nextLayers( aFTS, alongMomentum);
    for (std::vector<const DetLayer*>::const_iterator i2l = n2l.begin(); i2l != n2l.end(); i2l++) {
      allayers.push_back(*i2l);
    }
  }

  const TrajectoryStateOnSurface tsos(aFTS,ilayer->surface());
  
  if (tsos.isValid()) 
    {    
      for (std::vector<const DetLayer*>::const_iterator il = allayers.begin(); il != allayers.end(); il++) 
        {
          if ( (*il)->subDetector()==GeomDetEnumerators::PixelBarrel || (*il)->subDetector()==GeomDetEnumerators::PixelEndcap ) {
            
            std::vector<TrajectoryMeasurement> pixelMeasurements;
            if ((*il)->subDetector()==GeomDetEnumerators::PixelBarrel) {
              pixelMeasurements = theLayerMeasurements->measurements( **il, tsos , *aProp, *aBarrelMeas); 
            } else {
              pixelMeasurements = theLayerMeasurements->measurements( **il, tsos, *aProp, *aForwardMeas);
            }
            for (aMeas m=pixelMeasurements.begin(); m!=pixelMeasurements.end(); m++){
              if (m == pixelMeasurements.begin()){
                CLHEP::Hep3Vector prediction(m->forwardPredictedState().globalPosition().x(),
                                      m->forwardPredictedState().globalPosition().y(),
                                      m->forwardPredictedState().globalPosition().z());
                predictionHere.push_back( prediction);
              }
              if (m->recHit()->isValid()) {
                measurementsHere.push_back( *m);
                hitsHere.push_back( m->recHit());

                //std::cout<<"\n SH B-D "<<std::endl;

              } else {
                badMeasurementsHere.push_back( *m);
              }
            }
          }
          if (searchInTIDTEC) {   
          //additional search in the TID layers
          if ( ((*il)->subDetector())==GeomDetEnumerators::TID && (ilayer->location()) == GeomDetEnumerators::endcap)
            {
              std::vector<TrajectoryMeasurement> pixelMeasurements;
              pixelMeasurements = theLayerMeasurements->measurements( (**il), tsos , *aProp, *aForwardMeas); 
              
              for (aMeas m=pixelMeasurements.begin(); m!=pixelMeasurements.end(); m++)
                {
                  // limit search in first ring
                  if (TIDDetId(m->recHit()->geographicalId()).ring() > 1) continue;
                  if (m == pixelMeasurements.begin())
                    {
                      CLHEP::Hep3Vector prediction(m->forwardPredictedState().globalPosition().x(),
                                            m->forwardPredictedState().globalPosition().y(),
                                            m->forwardPredictedState().globalPosition().z());
                      predictionHere.push_back( prediction);
                    }
                  if (m->recHit()->isValid()) 
                    {
                      measurementsHere.push_back( *m);
                      hitsHere.push_back(m->recHit());
                    }
                  // else{ std::cout<<" 2H not valid "<<std::endl;}
                }
            } //end of TID search
          
          //additional search in the TEC layers
          if ( ((*il)->subDetector())==GeomDetEnumerators::TEC && (ilayer->location()) == GeomDetEnumerators::endcap)
            {
              std::vector<TrajectoryMeasurement> pixelMeasurements;
              pixelMeasurements = theLayerMeasurements->measurements( (**il), tsos , *aProp, *aForwardMeas); 
                      
              for (aMeas m=pixelMeasurements.begin(); m!=pixelMeasurements.end(); m++)
                {
                  // limit search in first ring and first third wheels
                  if (TECDetId(m->recHit()->geographicalId()).ring() > 1) continue;
                  if (TECDetId(m->recHit()->geographicalId()).wheel() > 3) continue;
                  if (m == pixelMeasurements.begin())
                    {
                      CLHEP::Hep3Vector prediction(m->forwardPredictedState().globalPosition().x(),
                                            m->forwardPredictedState().globalPosition().y(),
                                            m->forwardPredictedState().globalPosition().z());
                      predictionHere.push_back( prediction);
                    }
                  if (m->recHit()->isValid()) 
                    {
                      measurementsHere.push_back( *m);
                      hitsHere.push_back(m->recHit());

                      //std::cout<<"\n SH TEC "<<std::endl;

                    }
                  // else{ std::cout<<" 2H not valid "<<std::endl;}
                }
            } //end of TEC search
          }
        }
    } 
}

  
std::vector<TrajectoryMeasurement> PixelMatchNextLayers::measurementsInNextLayers() const {

  return measurementsHere;
}

std::vector<TrajectoryMeasurement> PixelMatchNextLayers::badMeasurementsInNextLayers() const {

  return badMeasurementsHere;
}

TransientTrackingRecHit::RecHitContainer PixelMatchNextLayers::hitsInNextLayers() const {

  return hitsHere;
}

std::vector<CLHEP::Hep3Vector> PixelMatchNextLayers::predictionInNextLayers() const {

  return predictionHere;
}