/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_5_3_14/src/RecoLocalMuon/CSCSegment/src/CSCSegAlgoST.h

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#ifndef CSCSegment_CSCSegAlgoST_h
#define CSCSegment_CSCSegAlgoST_h

#include <RecoLocalMuon/CSCSegment/src/CSCSegmentAlgorithm.h>

#include <DataFormats/CSCRecHit/interface/CSCRecHit2D.h>

#include <deque>
#include <vector>

class CSCSegAlgoShowering;
class CSCSegAlgoST : public CSCSegmentAlgorithm {


public:


  typedef std::vector<const CSCRecHit2D*> ChamberHitContainer;
  typedef std::vector < std::vector<const CSCRecHit2D* > > Segments;
  typedef std::deque<bool> BoolContainer;

  explicit CSCSegAlgoST(const edm::ParameterSet& ps);
  virtual ~CSCSegAlgoST();

  std::vector<CSCSegment> buildSegments(ChamberHitContainer rechits);

  std::vector<CSCSegment> buildSegments2(ChamberHitContainer rechits);

  std::vector<CSCSegment> run(const CSCChamber* aChamber, ChamberHitContainer rechits); 

  std::vector< std::vector<const CSCRecHit2D*> > clusterHits(const CSCChamber* aChamber, ChamberHitContainer & rechits);


   /* Build groups of rechits that are separated in strip numbers and Z to save time on the segment finding
   */
     std::vector< std::vector<const CSCRecHit2D*> > chainHits(const CSCChamber* aChamber, ChamberHitContainer & rechits);


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

private:

  double theWeight(double coordinate_1, double coordinate_2, double coordinate_3, float layer_1, float layer_2, float layer_3);

  void ChooseSegments(void);

  // siplistic routine - just return the segment with the smallest weight
  void ChooseSegments2a(std::vector< ChamberHitContainer > & best_segments, int best_seg);
  // copy of Stoyans ChooseSegments adjusted to the case without fake hits
  void ChooseSegments2(int best_seg);

  // Choose routine with reduce nr of loops
  void ChooseSegments3(int best_seg);
  void ChooseSegments3(std::vector< ChamberHitContainer > & best_segments, std::vector< float > & best_weight, int best_seg);
  //
  void fitSlopes(void);
  void fillChiSquared(void);
  void fillLocalDirection(void);
  void doSlopesAndChi2(void);
  // Duplicates are found in ME1/1a only
  void findDuplicates(std::vector<CSCSegment>  & segments );

  bool isGoodToMerge(bool isME11a, ChamberHitContainer & newChain, ChamberHitContainer & oldChain);

  CLHEP::HepMatrix derivativeMatrix(void) const;
  AlgebraicSymMatrix weightMatrix(void) const;
  AlgebraicSymMatrix calculateError(void) const;
  void flipErrors(AlgebraicSymMatrix&) const;

  void correctTheCovX(void);
  void correctTheCovMatrix(CLHEP::HepMatrix &IC);
  // Member variables
  const std::string myName; 
  const CSCChamber* theChamber;
  Segments GoodSegments;

  ChamberHitContainer PAhits_onLayer[6];
  ChamberHitContainer Psegments_hits;

  std::vector< ChamberHitContainer > Psegments;
  std::vector< ChamberHitContainer > Psegments_noLx;
  std::vector< ChamberHitContainer > Psegments_noL1;
  std::vector< ChamberHitContainer > Psegments_noL2;
  std::vector< ChamberHitContainer > Psegments_noL3;
  std::vector< ChamberHitContainer > Psegments_noL4;
  std::vector< ChamberHitContainer > Psegments_noL5;
  std::vector< ChamberHitContainer > Psegments_noL6;
  std::vector< ChamberHitContainer > chosen_Psegments;
  std::vector< float > weight_A;
  std::vector< float > weight_noLx_A;
  std::vector< float > weight_noL1_A;
  std::vector< float > weight_noL2_A;
  std::vector< float > weight_noL3_A;
  std::vector< float > weight_noL4_A;
  std::vector< float > weight_noL5_A;
  std::vector< float > weight_noL6_A;
  std::vector< float > chosen_weight_A;
  std::vector< float > curv_A;
  std::vector< float > curv_noL1_A;
  std::vector< float > curv_noL2_A;
  std::vector< float > curv_noL3_A;
  std::vector< float > curv_noL4_A;
  std::vector< float > curv_noL5_A;
  std::vector< float > curv_noL6_A;
  std::vector< float > weight_B;
  std::vector< float > weight_noL1_B;
  std::vector< float > weight_noL2_B;
  std::vector< float > weight_noL3_B;
  std::vector< float > weight_noL4_B;
  std::vector< float > weight_noL5_B;
  std::vector< float > weight_noL6_B;

  //ibl

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

  // input from .cfi file
  bool    debug;
  //  int     minLayersApart;
  //  double  nSigmaFromSegment;
  int     minHitsPerSegment;
  //  int     muonsPerChamberMax;
  //  double  chi2Max;
  double  dXclusBoxMax;
  double  dYclusBoxMax;
  int     maxRecHitsInCluster;
  bool    preClustering;
  bool    preClustering_useChaining;
  bool    Pruning;
  bool    BrutePruning;
  double  BPMinImprovement;
  bool    onlyBestSegment;
  bool    useShowering;

  double  hitDropLimit4Hits;
  double  hitDropLimit5Hits;
  double  hitDropLimit6Hits;

  float a_yweightPenaltyThreshold[5][5];

  double  yweightPenaltyThreshold;
  double  yweightPenalty;

  double  curvePenaltyThreshold;
  double  curvePenalty;
  CSCSegAlgoShowering* showering_;
  //
  bool correctCov_;              
  double protoChiUCorrection;
  std::vector<double> e_Cxx;
  double chi2Norm_2D_;               
  double chi2Norm_3D_;               
  unsigned maxContrIndex;       
  bool prePrun_;                 


  double prePrunLimit_;          

  double condSeed1_, condSeed2_;  
  bool covToAnyNumber_;          
  bool covToAnyNumberAll_;       
  double covAnyNumber_;          
  bool passCondNumber;          
  bool passCondNumber_2;          
};

#endif