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/data/refman/pasoursint/CMSSW_5_3_3/src/RecoVertex/KalmanVertexFit/src/KalmanVertexFitter.cc

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00001 #include "RecoVertex/KalmanVertexFit/interface/KalmanVertexFitter.h"
00002 #include "RecoVertex/KalmanVertexFit/interface/KalmanVertexUpdator.h"
00003 #include "RecoVertex/VertexTools/interface/SequentialVertexSmoother.h"
00004 #include "RecoVertex/VertexTools/interface/DummyVertexSmoother.h"
00005 #include "RecoVertex/KalmanVertexFit/interface/KalmanVertexTrackUpdator.h"
00006 #include "RecoVertex/KalmanVertexFit/interface/KalmanSmoothedVertexChi2Estimator.h"
00007 #include "RecoVertex/KalmanVertexFit/interface/KalmanTrackToTrackCovCalculator.h"
00008 #include "RecoVertex/LinearizationPointFinders/interface/FsmwLinearizationPointFinder.h"
00009 
00010 
00011 KalmanVertexFitter::KalmanVertexFitter(bool useSmoothing )
00012 {
00013   edm::ParameterSet pSet = defaultParameters();
00014   setup(pSet, useSmoothing);
00015 }
00016 
00017 KalmanVertexFitter::KalmanVertexFitter(const edm::ParameterSet& pSet,  bool useSmoothing )
00018 {
00019   setup(pSet, useSmoothing);
00020 }
00021 
00022 void KalmanVertexFitter::setup(const edm::ParameterSet& pSet,  bool useSmoothing )
00023 {
00024   if (useSmoothing) {
00025     KalmanVertexTrackUpdator<5> vtu;
00026     KalmanSmoothedVertexChi2Estimator<5> vse;
00027     KalmanTrackToTrackCovCalculator<5> covCalc;
00028     SequentialVertexSmoother<5> smoother(vtu, vse, covCalc);
00029     theSequentialFitter 
00030       = new SequentialVertexFitter<5>(pSet, FsmwLinearizationPointFinder(20, -2., 0.4, 10.), 
00031                                    KalmanVertexUpdator<5>(), 
00032                                    smoother, LinearizedTrackStateFactory());
00033   }
00034   else {
00035     DummyVertexSmoother<5> smoother;
00036     theSequentialFitter 
00037       = new SequentialVertexFitter<5>(pSet, FsmwLinearizationPointFinder(20, -2., 0.4, 10.), 
00038                                    KalmanVertexUpdator<5>(), 
00039                                    smoother, LinearizedTrackStateFactory());
00040   }
00041 }
00042 
00043 
00044 edm::ParameterSet KalmanVertexFitter::defaultParameters() const 
00045 {
00046   edm::ParameterSet pSet;
00047   pSet.addParameter<double>("maxDistance", 0.01);
00048   pSet.addParameter<int>("maxNbrOfIterations", 10); //10
00049   return pSet;
00050 }