TrackingRecHitLessFromGlobalPosition Class Reference

#include <TrackingRecHitLessFromGlobalPosition.h>

Public Member Functions
bool	operator() (const TrackingRecHit &a, const TrackingRecHit &b) const
	TrackingRecHitLessFromGlobalPosition (const TrackingGeometry *geometry_, PropagationDirection dir=alongMomentum)

Private Member Functions
bool	barrelForwardLess (const TrackingRecHit &a, const TrackingRecHit &b) const
bool	insideOutLess (const TrackingRecHit &a, const TrackingRecHit &b) const

Private Attributes
const TrackingGeometry *	geometry
PropagationDirection	theDir

Detailed Description

Defines order of layers in the Tracker as seen by straight tracks coming from the interaction region.

Definition at line 13 of file TrackingRecHitLessFromGlobalPosition.h.

Constructor & Destructor Documentation

TrackingRecHitLessFromGlobalPosition()

TrackingRecHitLessFromGlobalPosition::TrackingRecHitLessFromGlobalPosition ( const TrackingGeometry *  geometry_, PropagationDirection  dir = alongMomentum  )

inline

Definition at line 15 of file TrackingRecHitLessFromGlobalPosition.h.

      : geometry(geometry_), theDir(dir) {}

Member Function Documentation

barrelForwardLess()

bool TrackingRecHitLessFromGlobalPosition::barrelForwardLess ( const TrackingRecHit &  a, const TrackingRecHit &  b  ) const

private

Definition at line 66 of file TrackingRecHitLessFromGlobalPosition.cc.

References a, funct::abs(), b, and z.

Referenced by insideOutLess().

                                                                                                                   {
  //
  // for the moment sort again in z, but since the z in the barrel is wrong (it is in the centre of the module)
  // add the semi length
  //
  DetId ida(a.geographicalId());
  DetId idb(b.geographicalId());
  return static_cast<unsigned int>(std::abs(geometry->idToDet(ida)->surface().toGlobal(a.localPosition()).z()) * 1E7) <
         static_cast<unsigned int>(std::abs(geometry->idToDet(idb)->surface().toGlobal(b.localPosition()).z()) * 1E7);
}

insideOutLess()

bool TrackingRecHitLessFromGlobalPosition::insideOutLess ( const TrackingRecHit &  a, const TrackingRecHit &  b  ) const

private

Definition at line 13 of file TrackingRecHitLessFromGlobalPosition.cc.

References a, funct::abs(), b, barrelForwardLess(), Exception, perp(), PixelSubdetector::PixelBarrel, PixelSubdetector::PixelEndcap, StripSubdetector::TEC, StripSubdetector::TIB, StripSubdetector::TID, StripSubdetector::TOB, and z.

Referenced by operator()().

                                                                                                               {
  DetId ida(a.geographicalId());
  DetId idb(b.geographicalId());

  unsigned int idetA = static_cast<unsigned int>(ida.subdetId());
  unsigned int idetB = static_cast<unsigned int>(idb.subdetId());

  //check for mixed case...
  bool same_det = ((idetA == StripSubdetector::TIB && idetB == StripSubdetector::TIB) ||
                   (idetA == StripSubdetector::TID && idetB == StripSubdetector::TID) ||
                   (idetA == StripSubdetector::TIB && idetB == StripSubdetector::TID) ||
                   (idetA == StripSubdetector::TID && idetB == StripSubdetector::TIB) ||

                   (idetA == StripSubdetector::TOB && idetB == StripSubdetector::TOB) ||
                   (idetA == StripSubdetector::TEC && idetB == StripSubdetector::TEC) ||
                   (idetA == StripSubdetector::TOB && idetB == StripSubdetector::TEC) ||
                   (idetA == StripSubdetector::TEC && idetB == StripSubdetector::TOB) ||

                   (idetA == PixelSubdetector::PixelBarrel && idetB == PixelSubdetector::PixelBarrel) ||
                   (idetA == PixelSubdetector::PixelEndcap && idetB == PixelSubdetector::PixelEndcap) ||
                   (idetA == PixelSubdetector::PixelBarrel && idetB == PixelSubdetector::PixelEndcap) ||
                   (idetA == PixelSubdetector::PixelEndcap && idetB == PixelSubdetector::PixelBarrel));

  if (!same_det)
    return (idetA < idetB);

  if ((idetA == StripSubdetector::TIB || idetA == StripSubdetector::TOB || idetA == PixelSubdetector::PixelBarrel) &&
      (idetB == StripSubdetector::TIB || idetB == StripSubdetector::TOB || idetB == PixelSubdetector::PixelBarrel)) {
    return static_cast<unsigned int>(geometry->idToDet(ida)->surface().toGlobal(a.localPosition()).perp() * 1E7) <
           static_cast<unsigned int>(geometry->idToDet(idb)->surface().toGlobal(b.localPosition()).perp() * 1E7);
  }

  if ((idetA == StripSubdetector::TEC || idetA == StripSubdetector::TID || idetA == PixelSubdetector::PixelEndcap) &&
      (idetB == StripSubdetector::TEC || idetB == StripSubdetector::TID || idetB == PixelSubdetector::PixelEndcap)) {
    return static_cast<unsigned int>(std::abs(geometry->idToDet(ida)->surface().toGlobal(a.localPosition()).z()) *
                                     1E7) <
           static_cast<unsigned int>(std::abs(geometry->idToDet(idb)->surface().toGlobal(b.localPosition()).z()) * 1E7);
  }

  //
  //  here I have 1 barrel against one forward
  //

  if ((idetA == StripSubdetector::TIB || idetA == StripSubdetector::TOB || idetA == PixelSubdetector::PixelBarrel) &&
      (idetB == StripSubdetector::TEC || idetB == StripSubdetector::TID || idetB == PixelSubdetector::PixelEndcap)) {
    return barrelForwardLess(a, b);
  } else {
    return !barrelForwardLess(b, a);
  }

  throw cms::Exception("TrackingRecHitLessFromGlobalPosition", "Arguments are not Ok");
}

operator()()

bool TrackingRecHitLessFromGlobalPosition::operator() ( const TrackingRecHit &  a, const TrackingRecHit &  b  ) const

inline

Definition at line 18 of file TrackingRecHitLessFromGlobalPosition.h.

References a, alongMomentum, b, insideOutLess(), and theDir.

                                                                          {
    if (theDir == alongMomentum)
      return insideOutLess(a, b);
    else
      return insideOutLess(b, a);
  }

Member Data Documentation

geometry

const TrackingGeometry* TrackingRecHitLessFromGlobalPosition::geometry

private

Definition at line 30 of file TrackingRecHitLessFromGlobalPosition.h.

theDir

PropagationDirection TrackingRecHitLessFromGlobalPosition::theDir

private

Definition at line 31 of file TrackingRecHitLessFromGlobalPosition.h.

Referenced by operator()().