/data/refman/pasoursint/CMSSW_5_3_10_patch1/src/RecoVertex/GhostTrackFitter/interface/GhostTrack.h

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#ifndef RecoBTag_GhostTrack_h
#define RecoBTag_GhostTrack_h

#include <vector>

#include "DataFormats/GeometryVector/interface/GlobalPoint.h"
#include "DataFormats/TrackReco/interface/TrackFwd.h"

#include "TrackingTools/TransientTrack/interface/TransientTrack.h"

#include "RecoVertex/GhostTrackFitter/interface/GhostTrackState.h"
#include "RecoVertex/GhostTrackFitter/interface/GhostTrackPrediction.h"

namespace reco {

class GhostTrack {
    public:
        GhostTrack(const GhostTrackPrediction &prior,
                   const GhostTrackPrediction &prediction,
                   const std::vector<GhostTrackState> &states,
                   double ndof, double chi2) :
                prediction_(prediction), prior_(prior), states_(states),
                ndof_(ndof), chi2_(chi2)
        {}

        GhostTrack(const GhostTrackPrediction &prior,
                   const GhostTrackPrediction &prediction,
                   const std::vector<TransientTrack> &tracks,
                   double ndof, double chi2,
                   const std::vector<float> &weights = std::vector<float>(),
                   const GlobalPoint &origin = GlobalPoint(),
                   bool withOrigin = false);

        GhostTrack(const Track &ghostTrack,
                   const std::vector<TransientTrack> &tracks,
                   const std::vector<float> &weights = std::vector<float>(),
                   const GhostTrackPrediction &prior = GhostTrackPrediction(),
                   const GlobalPoint &origin = GlobalPoint(),
                   bool withOrigin = false);

        const GhostTrackPrediction &prediction() const { return prediction_; }
        const GhostTrackPrediction &prior() const { return prior_; }

        const std::vector<GhostTrackState> &states() const { return states_; }
        double ndof() const { return ndof_; }
        double chi2() const { return chi2_; }

        operator Track() const { return prediction_.track(ndof_, chi2_); }

    private:
        void initStates(const std::vector<TransientTrack> &tracks,
                        const std::vector<float> &weights, double offset);

        GhostTrackPrediction            prediction_;
        GhostTrackPrediction            prior_;
        std::vector<GhostTrackState>    states_;
        double                          ndof_;
        double                          chi2_;
};

}

#endif // RecoBTag_GhostTrack_h