LayerMeasurements.h

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#ifndef LayerMeasurements_H
#define LayerMeasurements_H


#include "TrackingTools/MeasurementDet/interface/MeasurementDetSystem.h"
#include "DataFormats/TrackerRecHit2D/interface/BaseTrackerRecHit.h"

#include <vector>


class TrajectoryStateOnSurface;
class Propagator;
class MeasurementEstimator;
class TrajectoryMeasurement;
class TrajectoryMeasurementGroup;
class MeasurementTrackerEvent;
class DetLayer;
class DetGroup;


class LayerMeasurements {
public:

using SimpleHitContainer=std::vector<BaseTrackerRecHit *>;


// dummy default constructor (obviously you can't use any object created this way), but it can be needed in some cases
LayerMeasurements() : theDetSystem(0), theData(0) {}
  
  // the constructor that most of the people should be using
  LayerMeasurements( const MeasurementDetSystem& detSystem, const MeasurementTrackerEvent &data) :
    theDetSystem(&detSystem), theData(&data) {}
    
    // return just valid hits, no sorting (for seeding mostly)
    bool recHits(SimpleHitContainer & result,
        const DetLayer& layer, 
        const TrajectoryStateOnSurface& startingState,
        const Propagator& prop, 
        const MeasurementEstimator& est) const;
    

  std::vector<TrajectoryMeasurement>
  measurements( const DetLayer& layer, 
        const TrajectoryStateOnSurface& startingState,
        const Propagator& prop, 
        const MeasurementEstimator& est) const;

  std::vector<TrajectoryMeasurementGroup>
  groupedMeasurements( const DetLayer& layer, 
               const TrajectoryStateOnSurface& startingState,
               const Propagator& prop, 
               const MeasurementEstimator& est) const;


  void addInvalidMeas( std::vector<TrajectoryMeasurement>& measVec,
               const DetGroup& group,
               const DetLayer& layer) const;

  MeasurementDetWithData idToDet(const DetId& id) const {
     return theDetSystem->idToDet(id, *theData);
  }

private:

  const MeasurementDetSystem* theDetSystem;
  const MeasurementTrackerEvent* theData;

};

#endif