TrackingTypes.h

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#ifndef TRACKINGTYPE_H
#define TRACKINGTYPE_H

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

// ROOT libraries
#include "Math/GenVector/Rotation3D.h"
#include "Math/GenVector/AxisAngle.h"
#include "Math/SMatrix.h"

namespace recob {

  namespace tracking {

    using Coord_t = double;
    
    using Point_t = geo::Point_t;
    
    using Vector_t = geo::Vector_t;
    
    using Positions_t = std::vector<Point_t>;
    
    using Momenta_t = std::vector<Vector_t>;

    using Rotation_t = ROOT::Math::Rotation3D;

    struct TrajectoryPoint_t {

      Point_t position; 
      Vector_t momentum; 

      TrajectoryPoint_t() = default;

      TrajectoryPoint_t(Point_t pos, Vector_t mom)
        : position(pos), momentum(mom) {}

      Vector_t direction() const
        { return momentum.Unit(); }

    }; // TrajectoryPoint_t

    using SMatrixSym22 = ROOT::Math::SMatrix<double,2,2,ROOT::Math::MatRepSym<double,2> >;
    using SMatrixSym33 = ROOT::Math::SMatrix<double,3,3,ROOT::Math::MatRepSym<double,3> >;
    using SMatrixSym55 = ROOT::Math::SMatrix<double,5,5,ROOT::Math::MatRepSym<double,5> >;
    using SMatrixSym66 = ROOT::Math::SMatrix<double,6,6,ROOT::Math::MatRepSym<double,6> >;
    using SMatrix65    = ROOT::Math::SMatrix<double,6,5>;
    using SMatrix56    = ROOT::Math::SMatrix<double,5,6>;
    using SMatrix55    = ROOT::Math::SMatrix<double,5,5>;
    using SMatrix66    = ROOT::Math::SMatrix<double,6,6>;
    using SVector6     = ROOT::Math::SVector<double,6>;
    using SVector5     = ROOT::Math::SVector<double,5>;
    using SVector3     = ROOT::Math::SVector<double,3>;
    using SVector2     = ROOT::Math::SVector<double,2>;
    
  }
  
}

#endif