LinearizedTrack.h

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/*
  Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
*/

//  LinearizedTrack (c) ATLAS Inner Detector Software  2006

 
#ifndef VXVERTEX_LINEARIZEDTRACK_H
#define VXVERTEX_LINEARIZEDTRACK_H
 
#include "EventPrimitives/EventPrimitives.h"
#include "GeoPrimitives/GeoPrimitives.h"
 
class MsgStream;
 
namespace Trk {
 
class LinearizedTrack
{
 
public:

  LinearizedTrack(const AmgVector(5) & expectedParametersAtPCA,
                  const AmgSymMatrix(5) & expectedParErrorAtPCA,
                  const Amg::Vector3D& linPoint,
                  const AmgMatrix(5, 3) & positionJacobian,
                  const AmgMatrix(5, 3) & momentumJacobian,
                  const Amg::Vector3D& expectedPosition,
                  const Amg::Vector3D& expectedMomentum,
                  const AmgVector(5) & constantTerm);
 
  
  LinearizedTrack() = default;
  LinearizedTrack(const LinearizedTrack&) = default;
  LinearizedTrack(LinearizedTrack&&) = default;
  LinearizedTrack& operator=(const LinearizedTrack&) = default;
  LinearizedTrack& operator=(LinearizedTrack&&) = default;
  ~LinearizedTrack() = default;
  
  LinearizedTrack* clone() const;

  MsgStream& dump(MsgStream& sl) const;

  std::ostream& dump(std::ostream& sl) const;
 

  const AmgMatrix(5, 3) & positionJacobian() const
  {
    return m_PositionJacobian;
  }

  const AmgMatrix(5, 3) & momentumJacobian() const
  {
    return m_MomentumJacobian;
  }

  const Amg::Vector3D& expectedPositionAtPCA() const
  {
    return m_ExpectedPositionAtPOCA;
  }

  const Amg::Vector3D& expectedMomentumAtPCA() const
  {
    return m_ExpectedMomentumAtPOCA;
  }

  const AmgVector(5) & constantTerm() const { return m_ConstantTerm; }

  const AmgSymMatrix(5) & expectedCovarianceAtPCA() const;

  AmgSymMatrix(5) expectedWeightAtPCA() const;

  const AmgVector(5) & expectedParametersAtPCA() const;

  bool isValid() const { return m_vl; }

  const Amg::Vector3D& linearizationPoint() const { return m_linPoint; }
 
private:
  AmgVector(5) m_ExpectedParametersAtPOCA;
  AmgSymMatrix(5) m_ExpectedCovarianceAtPOCA;
  Amg::Vector3D m_linPoint;
  AmgMatrix(5, 3) m_PositionJacobian;
  AmgMatrix(5, 3) m_MomentumJacobian;
  Amg::Vector3D m_ExpectedPositionAtPOCA;
  Amg::Vector3D m_ExpectedMomentumAtPOCA;
  AmgVector(5) m_ConstantTerm;
 
  bool m_vl = false; // validity flag: false if the class was created with
                     // default constructor, true otherwise
 
}; // end of class definitions

MsgStream&
operator<<(MsgStream& sl, const LinearizedTrack& sf);
std::ostream&
operator<<(std::ostream& sl, const LinearizedTrack& sf);
 
} // end of namespace definitions
#endif