CMSSW Reference Manual

00001 #ifndef PixelFitterByHelixProjections_H
00002 #define PixelFitterByHelixProjections_H
00003 
00004 #include "RecoPixelVertexing/PixelTrackFitting/interface/PixelFitter.h"
00005 #include "DataFormats/TrackingRecHit/interface/TrackingRecHit.h"
00006 #include "RecoTracker/TkTrackingRegions/interface/TrackingRegion.h"
00007 #include "FWCore/Framework/interface/EventSetup.h"
00008 #include "DataFormats/TrackReco/interface/Track.h"
00009 #include "FWCore/ParameterSet/interface/ParameterSet.h"
00010 
00011 #include <vector>
00012 
00013 //namespace edm {class ParameterSet;}
00014 class TransientTrackingRecHitBuilder;
00015 class TrackerGeometry;
00016 class MagneticField;
00017 
00018 
00019 class PixelFitterByHelixProjections : public PixelFitter {
00020 public:
00021   PixelFitterByHelixProjections(  const edm::ParameterSet& cfg);
00022   virtual ~PixelFitterByHelixProjections() {}
00023     virtual reco::Track* run(
00024       const edm::EventSetup& es,
00025       const std::vector<const TrackingRecHit *>& hits,
00026       const TrackingRegion& region) const;
00027 private:
00028   int charge(const std::vector<GlobalPoint> & points) const;
00029   float cotTheta(const GlobalPoint& pinner, const GlobalPoint& pouter) const;
00030   float phi(float xC, float yC, int charge) const;
00031   float pt(float curvature) const;
00032   float zip(float d0, float curv, 
00033     const GlobalPoint& pinner, const GlobalPoint& pouter) const;
00034   double errZip2(float apt, float eta) const;
00035   double errTip2(float apt, float eta) const;
00036 
00037 private:
00038   edm::ParameterSet theConfig;
00039 
00040   mutable const TrackerGeometry * theTracker;
00041   mutable const MagneticField * theField;
00042   mutable const TransientTrackingRecHitBuilder * theTTRecHitBuilder;
00043 
00044 };
00045 #endif
PixelFitterByHelixProjections.h
