CRackTrajectoryBuilder::CompareDetByTraj Class Reference

#include <CRackTrajectoryBuilder.h>

Public Member Functions
	CompareDetByTraj (const TSOS &tSos)
bool	operator() (const std::pair< TrackingRecHitRangeIterator, TSOS > rh1, const std::pair< TrackingRecHitRangeIterator, TSOS > rh2)

Private Attributes
const TrajectoryStateOnSurface &	_tSos

Detailed Description

Definition at line 140 of file CRackTrajectoryBuilder.h.

Constructor & Destructor Documentation

CRackTrajectoryBuilder::CompareDetByTraj::CompareDetByTraj ( const TSOS &  tSos )

inline

Definition at line 142 of file CRackTrajectoryBuilder.h.

: _tSos(tSos){};

Member Function Documentation

bool CRackTrajectoryBuilder::CompareDetByTraj::operator() ( const std::pair< TrackingRecHitRangeIterator, TSOS >  rh1, const std::pair< TrackingRecHitRangeIterator, TSOS >  rh2  )

inline

Definition at line 143 of file CRackTrajectoryBuilder.h.

References _tSos, TrajectoryStateOnSurface::globalDirection(), and TrajectoryStateOnSurface::globalPosition().

                                                                          {
      GlobalPoint gp1 = rh1.second.globalPosition();
      GlobalPoint gp2 = rh2.second.globalPosition();

      GlobalPoint gpT = _tSos.globalPosition();
      GlobalVector gpDiff1 = gp1 - gpT;
      GlobalVector gpDiff2 = gp2 - gpT;

      //this might have a better performance ...
      //       float dist1 = ( gp1.x()-gpT.x() ) * ( gp1.x()-gpT.x() ) + ( gp1.y()-gpT.y() ) * ( gp1.y()-gpT.y() ) + ( gp1.z()-gpT.z() ) * ( gp1.z()-gpT.z() );
      //       float dist2 = ( gp2.x()-gpT.x() ) * ( gp2.x()-gpT.x() ) + ( gp2.y()-gpT.y() ) * ( gp2.y()-gpT.y() ) + ( gp2.z()-gpT.z() ) * ( gp2.z()-gpT.z() );
      //if ( dist1<dist2 )

      //     if ( gpDiff1.mag2() < gpDiff2.mag2() )

      float dist1 = gpDiff1 * _tSos.globalDirection();
      float dist2 = gpDiff2 * _tSos.globalDirection();

      if (dist1 < 0)
        return false;
      if (dist1 < dist2)
        return true;

      return false;
    };

Member Data Documentation

const TrajectoryStateOnSurface& CRackTrajectoryBuilder::CompareDetByTraj::_tSos

private

Definition at line 168 of file CRackTrajectoryBuilder.h.

Referenced by operator()().