ComponentParameters.h

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/*
 Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef TrkComponentParameters
#define TrkComponentParameters
 
#include "TrkParameters/TrackParameters.h"
#include <utility>
#include <vector>
namespace Trk {
 
struct ComponentParameters {
  std::unique_ptr<Trk::TrackParameters> params{nullptr};
  double weight{0};
};
 
using MultiComponentState = std::vector<ComponentParameters>;
 
namespace MultiComponentStateHelpers {
 
MultiComponentState
clone(const MultiComponentState& in);
 
MultiComponentState
WithScaledError(MultiComponentState&& in,
                double errorScaleLocX,
                double errorScaleLocY,
                double errorScalePhi,
                double errorScaleTheta,
                double errorScaleQoverP);
 
bool
allHaveCovariance(const MultiComponentState& in);
 
void
renormaliseState(MultiComponentState&, double norm = 1);
 
} // end of MultiComponentStateHelpers
} // end Trk namespace
 
#endif