EventShape.h

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#include <DataFormats/TrackReco/interface/TrackFwd.h>
#include <DataFormats/Math/interface/LorentzVectorFwd.h>
#include <TVector3.h>
#include <vector>

class EventShape {
public:
  static math::XYZTLorentzVectorF thrust(const reco::TrackCollection&);
  static float sphericity(const reco::TrackCollection&);
  static float aplanarity(const reco::TrackCollection&);
  static float planarity(const reco::TrackCollection&);

  EventShape(reco::TrackCollection&);

  math::XYZTLorentzVectorF thrust() const;
  float sphericity() const;
  float aplanarity() const;
  float planarity() const;

private:
  std::vector<TVector3> p;
  std::vector<float> eigenvalues;
};