/data/refman/pasoursint/CMSSW_5_3_9_patch3/src/RecoLocalMuon/CSCSegment/src/CSCSegAlgoHitPruning.h

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#ifndef CSCSegment_CSCSegAlgoHitPruning_h
#define CSCSegAlgoHitPruning_h

#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include <DataFormats/CSCRecHit/interface/CSCRecHit2D.h>
#include <DataFormats/CSCRecHit/interface/CSCSegment.h>

#include <vector>

class CSCChamber;

class CSCSegAlgoHitPruning {

 public:

  typedef std::vector<const CSCRecHit2D*> ChamberHitContainer;

  explicit CSCSegAlgoHitPruning(const edm::ParameterSet& ps);

  ~CSCSegAlgoHitPruning();

  std::vector<CSCSegment> pruneBadHits(const CSCChamber* aChamber, std::vector<CSCSegment> segments);

 private:
  void fitSlopes(void);
  void fillChiSquared(void);
  void fillLocalDirection(void);
  CLHEP::HepMatrix derivativeMatrix(void) const;
  AlgebraicSymMatrix weightMatrix(void) const;
  AlgebraicSymMatrix calculateError(void) const;
  void flipErrors(AlgebraicSymMatrix&) const;

  const CSCChamber* theChamber;

  ChamberHitContainer protoSegment;
  float       protoSlope_u;
  float       protoSlope_v;
  LocalPoint  protoIntercept;           
  double      protoChi2;
  LocalVector protoDirection;

  bool    BrutePruning;
};
#endif