TrackHitMeta.h

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#ifndef LARDATAOBJ_RECOBASE_TRACKHITMETA_H
#define LARDATAOBJ_RECOBASE_TRACKHITMETA_H

#include <iosfwd>

// #include "larcoreobj/SimpleTypesAndConstants/geo_vectors.h"

namespace recob {

  class TrackHitMeta {
  public:
    TrackHitMeta() = default;

    TrackHitMeta(unsigned int idx, double dx = 0.0) : fIndex(idx), fDx(dx) {}

    unsigned int Index() const { return fIndex; }

    double Dx() const { return fDx; }

    // /// Candidate to keep 3D trajectory point here instead of inside recob::Track
    //geo::Point_t const & Position3D(void) const { return fPosition3D; }

  private:
    unsigned int fIndex = 0U; 
    double fDx = 0.0;         

    //geo::Point_t fPosition3D;
  }; // class TrackHitMeta

  inline std::ostream& operator<<(std::ostream& o, const TrackHitMeta& a)
  {
    o << a.Index();
    return o;
  }

  inline bool operator<(const TrackHitMeta& a, const TrackHitMeta& b)
  {
    return a.Index() < b.Index();
  }

} // namespace recob

#endif // LARDATAOBJ_RECOBASE_TRACKHITMETA_H