CTPPSPixelLocalTrack.cc

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/*
 *
* This is a part of CTPPS offline software.
* Author:
*   Fabrizio Ferro (ferro@ge.infn.it)
*   Enrico Robutti (robutti@ge.infn.it)
*   Fabio Ravera   (fabio.ravera@cern.ch)
*
*/

#include "DataFormats/CTPPSReco/interface/CTPPSPixelLocalTrack.h"

//----------------------------------------------------------------------------------------------------

AlgebraicSymMatrix22 CTPPSPixelLocalTrack::trackPointInterpolationCovariance(float z) const
{
  math::Matrix<2, dimension>::type h;
  h(0,0)=1;
  h(1,1)=1;
  h(0,2)=z-z0_;
  h(1,3)=z-z0_;

  return ROOT::Math::Similarity(h,par_covariance_matrix_);
  
}

//----------------------------------------------------------------------------------------------------

CTPPSPixelLocalTrack::CTPPSPixelLocalTrack(float z0, const ParameterVector & track_params_vector, 
      const CovarianceMatrix &par_covariance_matrix, float chiSquared) 
      : track_params_vector_(track_params_vector), z0_(z0), par_covariance_matrix_(par_covariance_matrix),
      chiSquared_(chiSquared), valid_(true), numberOfPointsUsedForFit_(0), recoInfo_(CTPPSpixelLocalTrackReconstructionInfo::invalid)
{

}

bool CTPPSPixelLocalTrack::operator< (const CTPPSPixelLocalTrack &r)
{
  if (z0_ < r.z0_)
    return true;
  if (z0_ > r.z0_)
    return false;
 
  for (int i = 0; i < CTPPSPixelLocalTrack::dimension; ++i)
  {
    if (track_params_vector_[i] < r.track_params_vector_[i])
      return true;
    if (track_params_vector_[i] > r.track_params_vector_[i])
      return false;
  }
 
  return false;

}