/data/refman/pasoursint/CMSSW_5_3_1/src/TrackingTools/GsfTools/interface/MultiTrajectoryStateAssembler.h

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#ifndef _TrackerReco_MultiTrajectoryStateAssembler_h_
#define _TrackerReco_MultiTrajectoryStateAssembler_h_

// #include "Utilities/Notification/interface/TimingReport.h"
#include "TrackingTools/TrajectoryState/interface/TrajectoryStateOnSurface.h"
#include <vector>
// #include <map>

class MultiTrajectoryStateAssembler {

private:
  typedef TrajectoryStateOnSurface TSOS;
  typedef std::vector<TrajectoryStateOnSurface> MultiTSOS;

public:
  //
  // constructors
  //
  MultiTrajectoryStateAssembler ();
  
  void addState (const TrajectoryStateOnSurface);

  void addInvalidState (const double);

  TrajectoryStateOnSurface combinedState ();
  TrajectoryStateOnSurface combinedState (const float weight);


private:
  void addStateVector (const MultiTSOS&);
  inline bool invalidCombinedState () const
  {
    //
    // Protect against empty combination (no valid input state)
    //
    return theStates.empty();
  }
  bool prepareCombinedState();
  TrajectoryStateOnSurface reweightedCombinedState (const double) const;
  void removeSmallWeights ();
  void removeWrongPz ();

private:
  bool sortStates;
  float minValidFraction;
  float minFractionalWeight;

  bool combinationDone;
  bool thePzError;

  double theValidWeightSum;
  double theInvalidWeightSum;
  MultiTSOS theStates;

//   static TimingReport::Item * theTimerAdd;
//   static TimingReport::Item * theTimerComb;

};

#endif