#include <MSLayersKeeperX0DetLayer.h>

Inheritance diagram for MSLayersKeeperX0DetLayer:

Public Member Functions
virtual void	init (const edm::EventSetup &iSetup)

virtual MSLayer	layer (const DetLayer *layer) const

virtual const MSLayersAtAngle &	layers (float cotTheta) const

	MSLayersKeeperX0DetLayer ()

virtual	~MSLayersKeeperX0DetLayer ()

Public Member Functions inherited from MSLayersKeeper
virtual	~MSLayersKeeper ()

Private Attributes
bool	isInitialised

MSLayersAtAngle	theLayersData

Additional Inherited Members
Protected Types inherited from MSLayersKeeper
typedef MSLayer::DataX0	DataX0

Static Protected Member Functions inherited from MSLayersKeeper
static const DataX0 &	getDataX0 (const MSLayer &l)

static void	setDataX0 (MSLayer &l, const DataX0 &x0Data)

Detailed Description

Definition at line 7 of file MSLayersKeeperX0DetLayer.h.

Constructor & Destructor Documentation

MSLayersKeeperX0DetLayer::MSLayersKeeperX0DetLayer ( )

inline

Definition at line 9 of file MSLayersKeeperX0DetLayer.h.

9 : isInitialised(false) { }

MSLayersKeeperX0DetLayer::isInitialised

bool isInitialised

Definition: MSLayersKeeperX0DetLayer.h:18

virtual MSLayersKeeperX0DetLayer::~MSLayersKeeperX0DetLayer ( )

inlinevirtual

Definition at line 10 of file MSLayersKeeperX0DetLayer.h.

References MSLayersKeeper::init().

10 { }

Member Function Documentation

void MSLayersKeeperX0DetLayer::init ( const edm::EventSetup & iSetup )

virtual

Reimplemented from MSLayersKeeper.

Definition at line 13 of file MSLayersKeeperX0DetLayer.cc.

References GeomDetEnumerators::barrel, PixelRecoLineRZ::cotLine(), reco::if(), slope, and combinedConstraintHelpers::sum2().

 {
   if (isInitialised) return;
   isInitialised = true;
   //  vector<MSLayer> allLayers = MSLayersKeeperX0DetLayerGeom().detLayers();
   //MP
   vector<MSLayer> allLayers;
   theLayersData = MSLayersAtAngle(allLayers);
   
   vector<MSLayer>::iterator it;
   PixelRecoPointRZ zero(0.,0.); 
   for (it = allLayers.begin(); it != allLayers.end(); it++) {
     PixelRecoPointRZ middle = it->face()== GeomDetEnumerators::barrel ?
         PixelRecoPointRZ(it->position(), it->range().mean())
       : PixelRecoPointRZ(it->range().mean(), it->position());
 
     float cotTheta = PixelRecoLineRZ(zero,middle).cotLine();
     float x0 =  getDataX0(*it).x0;
 
     DataX0 dataX0;
     if (it->face()== GeomDetEnumerators::barrel) {
       float sumX0D = theLayersData.sumX0D(zero, middle);
       dataX0 = DataX0(x0, sumX0D, cotTheta);      
     } else {
       float hrange= (it->range().max()-it->range().min())/2.;
       float cot1 = it->position()/(it->range().mean()-hrange/2);
       float cot2 = it->position()/(it->range().mean()+hrange/2);
       PixelRecoLineRZ line1(zero,cot1);
       PixelRecoLineRZ line2(zero,cot2);
       float sum1 = theLayersData.sumX0D(zero,it->crossing(line1).first);
       float sum2 = theLayersData.sumX0D(zero,it->crossing(line2).first);
       float slope = (sum2-sum1)/(1/cot2-1/cot1);
       float sumX0D = sum1 + slope*(1/cotTheta-1/cot1);
       dataX0 = DataX0(x0, sumX0D, cotTheta);
       dataX0.setForwardSumX0DSlope(slope);
     }
     setDataX0(*it, dataX0);
     theLayersData.update(*it);
   }
   //cout << "MSLayersKeeperX0DetLayer LAYERS: "<<endl;
   //theLayersData.print();
 }