LinearizedTrack.hpp

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// This file is part of the Acts project.
//
// Copyright (C) 2019 CERN for the benefit of the Acts project
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#pragma once

#include "Acts/Definitions/Algebra.hpp"
#include "Acts/Definitions/TrackParametrization.hpp"

namespace Acts {


struct LinearizedTrack {
  LinearizedTrack() = default;

  LinearizedTrack(const BoundVector& paramsAtPCA,
                  const BoundSquareMatrix& parCovarianceAtPCA,
                  const BoundSquareMatrix& parWeightAtPCA,
                  const Vector4& linPoint,
                  const ActsMatrix<eBoundSize, 4>& posJacobian,
                  const ActsMatrix<eBoundSize, 3>& momJacobian,
                  const Vector4& position, const Vector3& momentum,
                  const BoundVector& constTerm)
      : parametersAtPCA(paramsAtPCA),
        covarianceAtPCA(parCovarianceAtPCA),
        weightAtPCA(parWeightAtPCA),
        linearizationPoint(linPoint),
        positionJacobian(posJacobian),
        momentumJacobian(momJacobian),
        positionAtPCA(position),
        momentumAtPCA(momentum),
        constantTerm(constTerm) {}

  BoundVector parametersAtPCA{BoundVector::Zero()};
  BoundSquareMatrix covarianceAtPCA{BoundSquareMatrix::Zero()};
  BoundSquareMatrix weightAtPCA{BoundSquareMatrix::Zero()};
  Vector4 linearizationPoint{Vector4::Zero()};
  ActsMatrix<eBoundSize, 4> positionJacobian{ActsMatrix<eBoundSize, 4>::Zero()};
  ActsMatrix<eBoundSize, 3> momentumJacobian{ActsMatrix<eBoundSize, 3>::Zero()};
  Vector4 positionAtPCA{Vector4::Zero()};
  Vector3 momentumAtPCA{Vector3::Zero()};
  BoundVector constantTerm{BoundVector::Zero()};
};

}  // namespace Acts