ConversionFastHelix.h

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#ifndef Egamma_ConversionFastHelix_H_
#define Egamma_ConversionFastHelix_H_
 
#include "DataFormats/GeometryVector/interface/GlobalPoint.h"
#include "TrackingTools/TrajectoryState/interface/FreeTrajectoryState.h"
#include "RecoTracker/TkSeedGenerator/interface/FastCircle.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "MagneticField/Engine/interface/MagneticField.h"
 
class ConversionFastHelix {
private:
  typedef FreeTrajectoryState FTS;
 
public:
  ConversionFastHelix(const GlobalPoint& outerHit,
                      const GlobalPoint& middleHit,
                      const GlobalPoint& aVertex,
                      const MagneticField* field);
 
  ~ConversionFastHelix() {}
 
  void makeHelix();
 
  bool isValid() { return validStateAtVertex; }
 
  FTS stateAtVertex();
 
  FTS helixStateAtVertex();
 
  FTS straightLineStateAtVertex();
 
private:
  FTS theHelix_;
  bool validStateAtVertex;
  GlobalPoint theOuterHit;
  GlobalPoint theMiddleHit;
  GlobalPoint theVertex;
  FastCircle theCircle;
  const MagneticField* mField;
};
 
#endif  //Egamma_ConversionFastHelix_H_