TkLayerLess Class Reference

#include <TkLayerLess.h>

Inheritance diagram for TkLayerLess:

List of all members.

Public Member Functions
bool	operator() (const DetLayer *a, const DetLayer *b) const
	TkLayerLess (NavigationDirection dir=insideOut, const DetLayer *fromLayer=0)
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

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Detailed Description

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

Definition at line 15 of file TkLayerLess.h.

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Constructor & Destructor Documentation

TkLayerLess::TkLayerLess	(	NavigationDirection	dir = insideOut,
		const DetLayer *	fromLayer = 0
	)		[inline]

Definition at line 19 of file TkLayerLess.h.

References theFromLayerSign, and theOriginLayer.

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

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Member Function Documentation

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

Definition at line 39 of file TkLayerLess.cc.

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

Referenced by insideOutLess(), and insideOutLessSigned().

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

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

Definition at line 5 of file TkLayerLess.cc.

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

Referenced by operator()().

{
  if (a == b) return false;

  const BarrelDetLayer* bla = 
    dynamic_cast<BarrelDetLayer*>(const_cast<DetLayer*>(a));
  const BarrelDetLayer* blb = 
    dynamic_cast<BarrelDetLayer*>(const_cast<DetLayer*>(b));

  if      ( bla!=0 && blb!=0) {  // barrel with barrel
    return bla->specificSurface().radius() < blb->specificSurface().radius();
  }

  const ForwardDetLayer* flb = 
    dynamic_cast<ForwardDetLayer*>(const_cast<DetLayer*>(b));

  if ( bla!=0 && flb!=0) {  // barrel with forward
    return barrelForwardLess( bla, flb);
  }

  const ForwardDetLayer* fla = 
    dynamic_cast<ForwardDetLayer*>(const_cast<DetLayer*>(a));

  if (fla!=0 && flb!=0) {  //  forward with forward
    return fabs( fla->position().z()) < fabs( flb->position().z());
  }
  if ( fla!=0 && blb!=0) {  // forward with barrel
    return !barrelForwardLess( blb, fla);
  }
  //throw DetLogicError("TkLayerLess: arguments are not Barrel or Forward DetLayers");
  throw Genexception("TkLayerLess: arguments are not Barrel or Forward DetLayers");

}

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

Definition at line 46 of file TkLayerLess.cc.

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

Referenced by operator()().

{
  if (a == b) return false;

  const BarrelDetLayer* bla =
    dynamic_cast<BarrelDetLayer*>(const_cast<DetLayer*>(a));
  const BarrelDetLayer* blb =
    dynamic_cast<BarrelDetLayer*>(const_cast<DetLayer*>(b));

  if      ( bla!=0 && blb!=0) {  // barrel with barrel
    return bla->specificSurface().radius() < blb->specificSurface().radius();
  }

  const ForwardDetLayer* flb =
    dynamic_cast<ForwardDetLayer*>(const_cast<DetLayer*>(b));

  if ( bla!=0 && flb!=0) {  // barrel with forward
    return barrelForwardLess( bla, flb);
  }

  const ForwardDetLayer* fla =
    dynamic_cast<ForwardDetLayer*>(const_cast<DetLayer*>(a));

  if (fla!=0 && flb!=0) {  //  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!=0 && blb!=0) {  // forward with barrel
    return !barrelForwardLess( blb, fla);
  }
  throw Genexception("BeamHaloTkLayerLess: arguments are not Barrel or Forward DetLayers");

}

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

Definition at line 27 of file TkLayerLess.h.

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

                                                               {
    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);
    }
  }

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Member Data Documentation

NavigationDirection TkLayerLess::theDir [private]

Definition at line 40 of file TkLayerLess.h.

Referenced by operator()().

int TkLayerLess::theFromLayerSign [private]

Definition at line 42 of file TkLayerLess.h.

Referenced by insideOutLessSigned(), and TkLayerLess().

bool TkLayerLess::theOriginLayer [private]

Definition at line 41 of file TkLayerLess.h.

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