MuonTransientTrackingRecHit.cc

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#include "RecoMuon/TransientTrackingRecHit/interface/MuonTransientTrackingRecHit.h"
#include "Geometry/CommonDetUnit/interface/GeomDetUnit.h"

#include "DataFormats/GeometryCommonDetAlgo/interface/ErrorFrameTransformer.h"
#include "DataFormats/MuonDetId/interface/MuonSubdetId.h"
#include "DataFormats/TrackingRecHit/interface/AlignmentPositionError.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include "FWCore/Utilities/interface/Exception.h"

#include <map>

typedef MuonTransientTrackingRecHit::MuonRecHitPointer MuonRecHitPointer;
typedef MuonTransientTrackingRecHit::RecHitContainer   MuonRecHitContainer;


MuonTransientTrackingRecHit::MuonTransientTrackingRecHit(const GeomDet* geom, const TrackingRecHit* rh) :
  GenericTransientTrackingRecHit(*geom,*rh){}

MuonTransientTrackingRecHit::MuonTransientTrackingRecHit(const MuonTransientTrackingRecHit& other ) :
  GenericTransientTrackingRecHit(*other.det(), *(other.hit())) {}


LocalVector MuonTransientTrackingRecHit::localDirection() const {

  if (dynamic_cast<const RecSegment*>(hit()) )
     return dynamic_cast<const RecSegment*>(hit())->localDirection(); 
  else return LocalVector(0.,0.,0.);

}

LocalError MuonTransientTrackingRecHit::localDirectionError() const {

  if (dynamic_cast<const RecSegment*>(hit()))
     return dynamic_cast<const RecSegment*>(hit())->localDirectionError();
  else return LocalError(0.,0.,0.);

}

GlobalVector MuonTransientTrackingRecHit::globalDirection() const
{
  return  (det()->surface().toGlobal(localDirection()));
}

GlobalError MuonTransientTrackingRecHit::globalDirectionError() const
{
  return ErrorFrameTransformer().transform( localDirectionError(), (det()->surface()));
}


AlgebraicSymMatrix MuonTransientTrackingRecHit::parametersError() const {
 
  AlgebraicSymMatrix err = GenericTransientTrackingRecHit::parametersError();
  AlgebraicVector par = GenericTransientTrackingRecHit::parameters();

  const AlignmentPositionError* APE = det()->alignmentPositionError();
  if (APE != NULL) {
    AlgebraicVector positions(2,0);
    AlgebraicVector directions(2,0);

    if(err.num_row() == 1) {
     positions[0] = 0.;
     positions[1] = 0.;
     directions[0] = 0.;
     directions[1] = 0.;
     LocalErrorExtended lape = ErrorFrameTransformer().transform46(APE->globalError(),positions,directions);
     err[0][0] += lape.cxx();
    } else if (err.num_row() == 2) {
     positions[0] = localPosition().x();
     positions[1] = 0.;
     directions[0] = 0.;
     directions[1] = 0.;
     LocalErrorExtended lape = ErrorFrameTransformer().transform46(APE->globalError(),positions,directions);

     AlgebraicSymMatrix lapeMatrix(2,0);
     lapeMatrix[1][1] = lape.cxx();
     lapeMatrix[0][0] = lape.cphixphix();
     lapeMatrix[0][1] = lape.cphixx();

     if(err.num_row() != lapeMatrix.num_row())
       throw cms::Exception("MuonTransientTrackingRecHit::parametersError")
        <<"Discrepancy between alignment error matrix and error matrix: APE "
        << lapeMatrix.num_row()
        << ", error matrix " << err.num_row()
        << std::endl;

     err += lapeMatrix;
    } else if (err.num_row() == 4) { 
     positions[0] = par[2];
     positions[1] = par[3];
     directions[0] = par[0];
     directions[1] = par[1];

     LocalErrorExtended lape = ErrorFrameTransformer().transform46(APE->globalError(),positions,directions);

     AlgebraicSymMatrix lapeMatrix(4,0);
     lapeMatrix[2][2] = lape.cxx();
     lapeMatrix[2][3] = lape.cyx();
     lapeMatrix[3][3] = lape.cyy();
     lapeMatrix[0][0] = lape.cphixphix();
     lapeMatrix[0][1] = lape.cphiyphix();
     lapeMatrix[1][1] = lape.cphiyphiy();

     lapeMatrix[0][2] = lape.cphixx();
     lapeMatrix[0][3] = lape.cphixy();
     lapeMatrix[1][3] = lape.cphiyy();
     lapeMatrix[1][2] = lape.cphiyx();

     if(err.num_row() != lapeMatrix.num_row())
       throw cms::Exception("MuonTransientTrackingRecHit::parametersError")
        <<"Discrepancy between alignment error matrix and error matrix: APE "
        << lapeMatrix.num_row()
        << ", error matrix " << err.num_row()
        << std::endl;

     err += lapeMatrix;
    }
  }
  return err;
}

double MuonTransientTrackingRecHit::chi2() const 
{
  if (dynamic_cast<const RecSegment*>(hit()))
    return dynamic_cast<const RecSegment*>(hit())->chi2();
  else return 0.;
}

int MuonTransientTrackingRecHit::degreesOfFreedom() const 
{
  if (dynamic_cast<const RecSegment*>(hit()))
    return dynamic_cast<const RecSegment*>(hit())->degreesOfFreedom();
  else return 0;
}

bool MuonTransientTrackingRecHit::isDT() const{
  return  (geographicalId().subdetId() == MuonSubdetId::DT);
}

bool MuonTransientTrackingRecHit::isCSC() const{
  return  (geographicalId().subdetId() == MuonSubdetId::CSC);
}

bool MuonTransientTrackingRecHit::isRPC() const{
  return  (geographicalId().subdetId() == MuonSubdetId::RPC);
}

// FIXME, now it is "on-demand". I have to change it.
// FIXME check on mono hit!
TransientTrackingRecHit::ConstRecHitContainer MuonTransientTrackingRecHit::transientHits() const{

  ConstRecHitContainer theSubTransientRecHits;
  
  // the sub rec hit of this TransientRecHit
  std::vector<const TrackingRecHit*> ownRecHits = recHits();

  if(ownRecHits.size() == 0){
    theSubTransientRecHits.push_back(TransientTrackingRecHit::RecHitPointer(clone()));
    return theSubTransientRecHits;
  }
  
  // the components of the geom det on which reside this rechit
  std::vector<const GeomDet *> geomDets = det()->components();

  if(isDT() && dimension() == 2 && ownRecHits.front()->dimension() == 1 
     && (geomDets.size() == 3 || geomDets.size() == 2) ){ // it is a phi segment!!
    
    std::vector<const GeomDet *> subGeomDets;

    int sl = 1;
    for(std::vector<const GeomDet *>::const_iterator geoDet = geomDets.begin();
    geoDet != geomDets.end(); ++geoDet){
      if(sl != 3){ // FIXME!! this maybe is not always true
    std::vector<const GeomDet *> tmp = (*geoDet)->components();
    std::copy(tmp.begin(),tmp.end(),back_inserter(subGeomDets));
      }
      ++sl;
    }
    geomDets.clear();
    geomDets = subGeomDets;
  }
  
  // Fill the GeomDet map
  std::map<DetId,const GeomDet*> gemDetMap;
  
  for (std::vector<const GeomDet*>::const_iterator subDet = geomDets.begin(); 
       subDet != geomDets.end(); ++subDet)
    gemDetMap[ (*subDet)->geographicalId() ] = *subDet;
  
  std::map<DetId,const GeomDet*>::iterator gemDetMap_iter;
  
  // Loop in order to check the ids
  for (std::vector<const TrackingRecHit*>::const_iterator rechit = ownRecHits.begin(); 
       rechit != ownRecHits.end(); ++rechit){
    
    gemDetMap_iter = gemDetMap.find( (*rechit)->geographicalId() );
    
    if(gemDetMap_iter != gemDetMap.end() )
      theSubTransientRecHits.push_back(TransientTrackingRecHit::RecHitPointer(new MuonTransientTrackingRecHit(gemDetMap_iter->second, 
                                     *rechit)) );
    else if( (*rechit)->geographicalId() == det()->geographicalId() ) // Phi in DT is on Chamber
      theSubTransientRecHits.push_back(TransientTrackingRecHit::RecHitPointer(new MuonTransientTrackingRecHit(det(), 
                                       *rechit)) );
  }
  return theSubTransientRecHits;

}


void MuonTransientTrackingRecHit::invalidateHit(){ 
  setType(bad); trackingRecHit_->setType(bad); 


  if (isDT()){
    if(dimension() > 1){ // MB4s have 2D, but formatted in 4D segments 
      std::vector<TrackingRecHit*> seg2D = recHits(); // 4D --> 2D
      // load 1D hits (2D --> 1D)
      for(std::vector<TrackingRecHit*>::iterator it = seg2D.begin(); it != seg2D.end(); ++it){
    std::vector<TrackingRecHit*> hits1D =  (*it)->recHits();
    (*it)->setType(bad);
    for(std::vector<TrackingRecHit*>::iterator it2 = hits1D.begin(); it2 != hits1D.end(); ++it2)
      (*it2)->setType(bad);
      }
    }
  }
  else if(isCSC())
    if(dimension() == 4){
      std::vector<TrackingRecHit*>  hits = recHits(); // load 2D hits (4D --> 1D)
      for(std::vector<TrackingRecHit*>::iterator it = hits.begin(); it != hits.end(); ++it)
    (*it)->setType(bad);
    }
  
  
}