TkLayerLess Class Reference

#include <TkLayerLess.h>

Public Member Functions
bool	operator() (const DetLayer *a, const DetLayer *b) const
	TkLayerLess (NavigationDirection dir=insideOut, const DetLayer *fromLayer=nullptr)

Private Member Functions
bool	barrelForwardLess (const BarrelDetLayer *blb, const ForwardDetLayer *fla) const
bool	insideOutLess (const DetLayer *, const DetLayer *) const
bool	insideOutLessSigned (const DetLayer *, const DetLayer *) const

Private Attributes
NavigationDirection	theDir
int	theFromLayerSign
bool	theOriginLayer

Detailed Description

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

Definition at line 14 of file TkLayerLess.h.

Constructor & Destructor Documentation

TkLayerLess()

TkLayerLess::TkLayerLess ( NavigationDirection  dir = insideOut, const DetLayer *  fromLayer = nullptr  )

inline

Definition at line 16 of file TkLayerLess.h.

                                                                                        : theDir(dir) {
    if (fromLayer) {
      theOriginLayer = true;
      theFromLayerSign = (fromLayer->position().z() > 0 ? 1 : -1);
    } else
      theOriginLayer = false;
  }

References theFromLayerSign, and theOriginLayer.

Member Function Documentation

barrelForwardLess()

bool TkLayerLess::barrelForwardLess ( const BarrelDetLayer *  blb, const ForwardDetLayer *  fla  ) const

private

Definition at line 34 of file TkLayerLess.cc.

                                                                                               {
  return bla->surface().bounds().length() / 2. < fabs(flb->position().z());
}

References Surface::bounds(), Bounds::length(), GeometricSearchDet::position(), BarrelDetLayer::surface(), and PV3DBase< T, PVType, FrameType >::z().

Referenced by insideOutLess(), and insideOutLessSigned().

insideOutLess()

bool TkLayerLess::insideOutLess ( const DetLayer *  a, const DetLayer *  b  ) const

private

Definition at line 5 of file TkLayerLess.cc.

                                                                          {
  if (a == b)
    return false;
 
  const BarrelDetLayer* bla = dynamic_cast<const BarrelDetLayer*>(a);
  const BarrelDetLayer* blb = dynamic_cast<const BarrelDetLayer*>(b);
 
  if (bla != nullptr && blb != nullptr) {  // barrel with barrel
    return bla->specificSurface().radius() < blb->specificSurface().radius();
  }
 
  const ForwardDetLayer* flb = dynamic_cast<const ForwardDetLayer*>(b);
 
  if (bla != nullptr && flb != nullptr) {  // barrel with forward
    return barrelForwardLess(bla, flb);
  }
 
  const ForwardDetLayer* fla = dynamic_cast<const ForwardDetLayer*>(a);
 
  if (fla != nullptr && flb != nullptr) {  //  forward with forward
    return fabs(fla->position().z()) < fabs(flb->position().z());
  }
  if (fla != nullptr && blb != nullptr) {  // forward with barrel
    return !barrelForwardLess(blb, fla);
  }
  //throw DetLogicError("TkLayerLess: arguments are not Barrel or Forward DetLayers");
  throw cms::Exception("TkLayerLess", "Arguments are not Barrel or Forward DetLayers");
}

References a, b, barrelForwardLess(), Exception, GeometricSearchDet::position(), BarrelDetLayer::specificSurface(), and PV3DBase< T, PVType, FrameType >::z().

Referenced by operator()().

insideOutLessSigned()

bool TkLayerLess::insideOutLessSigned ( const DetLayer *  a, const DetLayer *  b  ) const

private

Definition at line 38 of file TkLayerLess.cc.

                                                                                {
  if (a == b)
    return false;
 
  const BarrelDetLayer* bla = dynamic_cast<const BarrelDetLayer*>(a);
  const BarrelDetLayer* blb = dynamic_cast<const BarrelDetLayer*>(b);
 
  if (bla != nullptr && blb != nullptr) {  // barrel with barrel
    return bla->specificSurface().radius() < blb->specificSurface().radius();
  }
 
  const ForwardDetLayer* flb = dynamic_cast<const ForwardDetLayer*>(b);
 
  if (bla != nullptr && flb != nullptr) {  // barrel with forward
    return barrelForwardLess(bla, flb);
  }
 
  const ForwardDetLayer* fla = dynamic_cast<const ForwardDetLayer*>(a);
 
  if (fla != nullptr && flb != nullptr) {                 //  forward with forward
    if (fla->position().z() * flb->position().z() > 0) {  // same z-sign
      //regular ordering when same sign
      LogDebug("BeamHaloTkLayerLess") << "reaching this: " << theFromLayerSign << " " << fla->position().z() << " "
                                      << flb->position().z();
      return (fabs(fla->position().z()) < fabs(flb->position().z()));
    } else {  //layers compared are not on the same z-side
      LogDebug("BeamHaloTkLayerLess") << "reaching this at least: " << theFromLayerSign << " " << fla->position().z()
                                      << " " << flb->position().z();
 
      if (theFromLayerSign * fla->position().z() > 0) {
        //"fla" and original layer are on the same side
        //say that fla is less than flb
        return false;
      } else {
        return true;
      }
    }
  }
  if (fla != nullptr && blb != nullptr) {  // forward with barrel
    return !barrelForwardLess(blb, fla);
  }
  throw cms::Exception("BeamHaloTkLayerLess", "Arguments are not Barrel or Forward DetLayers");
}

References a, b, barrelForwardLess(), Exception, LogDebug, GeometricSearchDet::position(), BarrelDetLayer::specificSurface(), theFromLayerSign, and PV3DBase< T, PVType, FrameType >::z().

Referenced by operator()().

operator()()

bool TkLayerLess::operator() ( const DetLayer *  a, const DetLayer *  b  ) const

inline

Definition at line 24 of file TkLayerLess.h.

                                                              {
    if (!theOriginLayer) {
      if (theDir == insideOut)
        return insideOutLess(a, b);
      else
        return insideOutLess(b, a);
    } else {
      if (theDir == insideOut)
        return insideOutLessSigned(a, b);
      else
        return insideOutLessSigned(b, a);
    }
  }

References a, b, insideOut, insideOutLess(), insideOutLessSigned(), theDir, and theOriginLayer.

Member Data Documentation

theDir

NavigationDirection TkLayerLess::theDir

private

Definition at line 39 of file TkLayerLess.h.

Referenced by operator()().

theFromLayerSign

int TkLayerLess::theFromLayerSign

private

Definition at line 41 of file TkLayerLess.h.

Referenced by insideOutLessSigned(), and TkLayerLess().

theOriginLayer

bool TkLayerLess::theOriginLayer

private

Definition at line 40 of file TkLayerLess.h.

Referenced by operator()(), and TkLayerLess().