#include <ConversionBarrelEstimator.h>

Inheritance diagram for ConversionBarrelEstimator:

Public Member Functions
virtual ConversionBarrelEstimator *	clone () const
	ConversionBarrelEstimator ()
	ConversionBarrelEstimator (float phiRangeMin, float phiRangeMax, float zRangeMin, float zRangeMax, double nSigma=3.)
virtual bool	estimate (const TrajectoryStateOnSurface &ts, const Plane &plane) const
virtual std::pair< bool, double >	estimate (const TrajectoryStateOnSurface &ts, const TransientTrackingRecHit &hit) const
virtual Local2DVector	maximalLocalDisplacement (const TrajectoryStateOnSurface &ts, const Plane &plane) const
double	nSigmaCut () const
Private Attributes
double	theNSigma
float	thePhiRangeMax
float	thePhiRangeMin
float	theZRangeMax
float	theZRangeMin

Detailed Description

Defines the search area in the barrel

Date:: 2012/12/26 11:08:57

Revision:: 1.7

Author:: Nancy Marinelli, U. of Notre Dame, US

Definition at line 21 of file ConversionBarrelEstimator.h.

Constructor & Destructor Documentation

ConversionBarrelEstimator::ConversionBarrelEstimator ( ) [inline]

Definition at line 24 of file ConversionBarrelEstimator.h.

Referenced by clone().

{};

ConversionBarrelEstimator::ConversionBarrelEstimator	(	float	phiRangeMin,
		float	phiRangeMax,
		float	zRangeMin,
		float	zRangeMax,
		double	nSigma = `3.`
	)		`[inline]`

Definition at line 25 of file ConversionBarrelEstimator.h.

                                                                                        : 
                           thePhiRangeMin( phiRangeMin), thePhiRangeMax( phiRangeMax),
                           theZRangeMin( zRangeMin), theZRangeMax( zRangeMax), theNSigma(nSigma) {
    //    std::cout << " ConversionBarrelEstimator CTOR " << std::endl;
}

Member Function Documentation

virtual ConversionBarrelEstimator* ConversionBarrelEstimator::clone ( void ) const [inline, virtual]

Implements MeasurementEstimator.

Definition at line 37 of file ConversionBarrelEstimator.h.

References ConversionBarrelEstimator().

                                                   {
    return new ConversionBarrelEstimator(*this);
  }

virtual bool ConversionBarrelEstimator::estimate	(	const TrajectoryStateOnSurface &	ts,
		const Plane &	plane
	)		const `[virtual]`

Returns true if the TrajectoryStateOnSurface is compatible with the Plane, false otherwise. The TrajectoryStateOnSurface must be on the plane.

Implements MeasurementEstimator.

std::pair< bool, double > ConversionBarrelEstimator::estimate	(	const TrajectoryStateOnSurface &	ts,
		const TransientTrackingRecHit &	hit
	)		const `[virtual]`

Returns pair( true, value) if the TrajectoryStateOnSurface is compatible with the RecHit, and pair( false, value) if it is not compatible. The TrajectoryStateOnSurface must be on the same Surface as the RecHit. For an estimator where there is no value computed, e.g. fixed window estimator, only the first(bool) part is of interest.

Implements MeasurementEstimator.

Definition at line 12 of file ConversionBarrelEstimator.cc.

References TrajectoryStateOnSurface::globalParameters(), TransientTrackingRecHit::globalPosition(), TrackingRecHit::localPositionError(), PV3DBase< T, PVType, FrameType >::phi(), pi, GlobalTrajectoryParameters::position(), query::result, mathSSE::sqrt(), thePhiRangeMin, theZRangeMax, LocalError::yy(), and PV3DBase< T, PVType, FrameType >::z().

                                                                                                      {
  std::pair<bool,double> result;
  
  //std::cout << "  ConversionBarrelEstimator::estimate( const TrajectoryStateOnSurface& ts, const TransientTrackingRecHit& hit) " << std::endl;
 
  float tsPhi = ts.globalParameters().position().phi();
  GlobalPoint gp = hit.globalPosition();
  float rhPhi = gp.phi();
  
  // allow a z fudge of 2 sigma
  float dz = 2. * sqrt(hit.localPositionError().yy()) ;
  float zDiff = ts.globalParameters().position().z() - gp.z(); 
  float phiDiff = tsPhi - rhPhi;
  if (phiDiff > pi) phiDiff -= twopi;
  if (phiDiff < -pi) phiDiff += twopi; 
  
  // add the errors on the window and the point in quadrature
  float zrange = sqrt(theZRangeMax*theZRangeMax + dz*dz);
  
  /*
  std::cout << "  BarrelEstimator ts local error " <<ts.localError().positionError()  << " hit local error " << hit.localPositionError() << std::endl; 
  std::cout << "  BarrelEstimator:  RecHit at " << gp << " phi " << rhPhi << " eta " << gp.eta() <<  std::endl;
  std::cout << "  BarrelEstimator:  ts at " << ts.globalParameters().position() << " phi " <<ts.globalParameters().position().phi() << " eta " << ts.globalParameters().position().eta()<<  std::endl;
  std::cout << "                    zrange = +/-" << zrange << ", zDiff = " << zDiff << std::endl;
  std::cout << "                    thePhiRangeMin = " << thePhiRangeMin << ", thePhiRangeMax = " << thePhiRangeMax << ", phiDiff = " << phiDiff << std::endl;
  */

  
  
  if ( phiDiff < thePhiRangeMax && phiDiff > thePhiRangeMin && 
       zDiff < zrange && zDiff > -zrange) {
    
    //    std::cout << "      estimator returns 1 with phiDiff " << thePhiRangeMin << " < " << phiDiff << " < "
    //    << thePhiRangeMax << " and zDiff " << zDiff << " < " << zrange << std::endl;
    // std::cout << " YES " << phiDiff << " " << zDiff << std::endl;
    // std::cout << "                  => RECHIT ACCEPTED " << std::endl;
    
    result.first=true;
    result.second=phiDiff;
  } else {
    
    //     std::cout << "      estimator returns NOT ACCEPTED  with phiDiff " << thePhiRangeMin << " < " << phiDiff << " < "
    //<< thePhiRangeMax << " and zDiff " << zDiff << " < " << theZRangeMax+dz << std::endl;
    
    result.first=false;
    result.second=0;
    
  }
  
  return result;
  
}

virtual Local2DVector ConversionBarrelEstimator::maximalLocalDisplacement	(	const TrajectoryStateOnSurface &	ts,
		const Plane &	plane
	)		const `[virtual]`

Returns the size of the compatibility region around the local position of the TrajectoryStateOnSurface along the directions of local x and y axis. The TrajectoryStateOnSurface must be on the plane. This method allows to limit the search for compatible detectors or RecHits. The MeasurementEstimator should not return "true" for any RecHit or Plane which is entirely outside of the compatibility region defined by maximalLocalDisplacement().

Reimplemented from MeasurementEstimator.

double ConversionBarrelEstimator::nSigmaCut ( ) const [inline]

Definition at line 48 of file ConversionBarrelEstimator.h.

References theNSigma.