GeomDetLess Class Reference

#include <GeomDetLess.h>

Public Member Functions
	GeomDetLess (PropagationDirection dir=alongMomentum)
bool	operator() (const GeomDet *a, const GeomDet *b) const

Private Member Functions
bool	barrelForwardLess (const GeomDet *blb, const GeomDet *fla) const
bool	insideOutLess (const GeomDet *, const GeomDet *) const

Private Attributes
PropagationDirection	theDir

Detailed Description

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

Definition at line 12 of file GeomDetLess.h.

Constructor & Destructor Documentation

GeomDetLess::GeomDetLess ( PropagationDirection  dir = alongMomentum )

inline

Definition at line 15 of file GeomDetLess.h.

                                                         :
    theDir(dir) {}

Member Function Documentation

bool GeomDetLess::barrelForwardLess ( const GeomDet *  blb, const GeomDet *  fla  ) const

private

Definition at line 38 of file GeomDetLess.cc.

References funct::abs(), GeomDet::position(), GloballyPositioned< T >::position(), GeomDet::surface(), and PV3DBase< T, PVType, FrameType >::z().

Referenced by insideOutLess().

{
  return std::abs(bla->surface().position().z()) < std::abs( flb->position().z());
}

bool GeomDetLess::insideOutLess ( const GeomDet *  a, const GeomDet *  b  ) const

private

Definition at line 6 of file GeomDetLess.cc.

References funct::abs(), barrelForwardLess(), edm::hlt::Exception, GeomDet::geographicalId(), PV3DBase< T, PVType, FrameType >::perp(), PixelSubdetector::PixelBarrel, PixelSubdetector::PixelEndcap, GloballyPositioned< T >::position(), GeomDet::surface(), StripSubdetector::TEC, StripSubdetector::TIB, StripSubdetector::TID, StripSubdetector::TOB, and PV3DBase< T, PVType, FrameType >::z().

Referenced by operator()().

{
  if (a == b) return false;

  DetId ida(a->geographicalId());
  DetId idb(b->geographicalId());

  if      ( (ida.subdetId() == StripSubdetector::TIB || ida.subdetId() == StripSubdetector::TOB || ida.subdetId() == PixelSubdetector::PixelBarrel) &&
        (idb.subdetId() == StripSubdetector::TIB || idb.subdetId() == StripSubdetector::TOB || idb.subdetId() == PixelSubdetector::PixelBarrel)) {  // barrel with barrel
    return a->surface().position().perp() < b->surface().position().perp();
  }

  if      ( (ida.subdetId() == StripSubdetector::TEC || ida.subdetId() == StripSubdetector::TID || ida.subdetId() == PixelSubdetector::PixelEndcap) &&
        (idb.subdetId() == StripSubdetector::TEC || idb.subdetId() == StripSubdetector::TID || idb.subdetId() == PixelSubdetector::PixelEndcap)) {  // fwd with fwd
    return std::abs(a->surface().position().z()) < std::abs(b->surface().position().z());
  }
  
  //
  //  here I have 1 barrel against one forward
  //

  if      ( (ida.subdetId() == StripSubdetector::TIB || ida.subdetId() == StripSubdetector::TOB || ida.subdetId() == PixelSubdetector::PixelBarrel) &&
        (idb.subdetId() == StripSubdetector::TEC || idb.subdetId() == StripSubdetector::TID || idb.subdetId() == PixelSubdetector::PixelEndcap)) {  // barrel with barrel
    return barrelForwardLess( a, b);
  }else{
    return !barrelForwardLess( b, a);
  }
  
  throw cms::Exception("GeomDetLess") << "GeomDetLess: arguments are not Ok";
  
}

bool GeomDetLess::operator() ( const GeomDet *  a, const GeomDet *  b  ) const

inline

Definition at line 18 of file GeomDetLess.h.

References alongMomentum, insideOutLess(), and theDir.

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

Member Data Documentation

PropagationDirection GeomDetLess::theDir

private

Definition at line 25 of file GeomDetLess.h.

Referenced by operator()().