From 1229ccfb65d0ba8e888359d9c4598bea9349b47c Mon Sep 17 00:00:00 2001
From: christos <christos@cern.ch>
Date: Tue, 1 Sep 2020 13:33:37 +0100
Subject: [PATCH] Forward GSf make it part of the fitter, rather than truly
independnet component
---
.../TrkGaussianSumFilter/ForwardGsfFitter.h | 104 ------------------
.../TrkGaussianSumFilter/GaussianSumFitter.h | 48 ++++++--
.../TrkGaussianSumFilter/IForwardGsfFitter.h | 78 -------------
.../src/ForwardGsfFitter.cxx | 71 +-----------
.../src/GaussianSumFitter.cxx | 66 +++++------
.../TrkGaussianSumFilter_entries.cxx | 2 -
6 files changed, 74 insertions(+), 295 deletions(-)
delete mode 100644 Tracking/TrkFitter/TrkGaussianSumFilter/TrkGaussianSumFilter/ForwardGsfFitter.h
delete mode 100644 Tracking/TrkFitter/TrkGaussianSumFilter/TrkGaussianSumFilter/IForwardGsfFitter.h
diff --git a/Tracking/TrkFitter/TrkGaussianSumFilter/TrkGaussianSumFilter/ForwardGsfFitter.h b/Tracking/TrkFitter/TrkGaussianSumFilter/TrkGaussianSumFilter/ForwardGsfFitter.h
deleted file mode 100644
index 22fb3e850516..000000000000
--- a/Tracking/TrkFitter/TrkGaussianSumFilter/TrkGaussianSumFilter/ForwardGsfFitter.h
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
-*/
-
-/**
- * @file ForwardGsfFitter.h
- * @date Wednesday 9th March 2005
- * @author Tom Athkinson, Anthony Morley, Christos Anastopoulos
- * @brief Class definition for the forward GSF fitter
- */
-
-#ifndef TrkForwardGsfFitter_H
-#define TrkForwardGsfFitter_H
-#include "TrkEventPrimitives/ParticleHypothesis.h"
-#include "TrkFitterUtils/FitterTypes.h"
-#include "TrkGaussianSumFilter/GsfMeasurementUpdator.h"
-#include "TrkGaussianSumFilter/IForwardGsfFitter.h"
-#include "TrkGaussianSumFilter/IMultiStateExtrapolator.h"
-#include "TrkMultiComponentStateOnSurface/MultiComponentState.h"
-#include "TrkParameters/TrackParameters.h"
-
-#include "AthenaBaseComps/AthAlgTool.h"
-#include "GaudiKernel/ToolHandle.h"
-
-namespace Trk {
-
-class IMultiStateMeasurementUpdator;
-class IRIO_OnTrackCreator;
-class Surface;
-
-class ForwardGsfFitter
- : public AthAlgTool
- , virtual public IForwardGsfFitter
-{
-
-public:
- /** Constructor with AlgTool parameters */
- ForwardGsfFitter(const std::string&, const std::string&, const IInterface*);
-
- /** Virtual destructor */
- virtual ~ForwardGsfFitter() = default;
-
- /** AlgTool initialise method */
- virtual StatusCode initialize() override final;
-
- /** AlgTool finalise method */
- virtual StatusCode finalize() override final;
-
- /** Configure the forward GSF fitter
- - Configure the extrapolator
- - Configure the measurement updator
- - Configure the RIO_OnTrack creator */
- virtual StatusCode configureTools(
- const ToolHandle<Trk::IMultiStateExtrapolator>& extrapolator,
- const ToolHandle<Trk::IRIO_OnTrackCreator>& rioOnTrackCreator)
- override final;
-
- /** Forward GSF fit using PrepRawData */
- virtual std::unique_ptr<ForwardTrajectory> fitPRD(
- const EventContext& ctx,
- IMultiStateExtrapolator::Cache&,
- const PrepRawDataSet&,
- const TrackParameters&,
- const ParticleHypothesis particleHypothesis =
- nonInteracting) const override final;
-
- /** Forward GSF fit using MeasurementSet */
- virtual std::unique_ptr<ForwardTrajectory> fitMeasurements(
- const EventContext& ctx,
- IMultiStateExtrapolator::Cache&,
- const MeasurementSet&,
- const TrackParameters&,
- const ParticleHypothesis particleHypothesis =
- nonInteracting) const override final;
-
- /** The interface will later be extended so that the initial
- * state can be additionally a MultiComponentState object! */
-
-private:
- /** Progress one step along the fit */
- bool stepForwardFit(
- const EventContext& ctx,
- IMultiStateExtrapolator::Cache&,
- ForwardTrajectory*,
- const PrepRawData*,
- const MeasurementBase*,
- const Surface&,
- MultiComponentState&,
- const ParticleHypothesis particleHypothesis = nonInteracting) const;
-
-private:
- /**These are passed via the configure tools so not retrieved from this tool*/
- ToolHandle<IMultiStateExtrapolator> m_extrapolator;
- ToolHandle<IRIO_OnTrackCreator> m_rioOnTrackCreator;
- GsfMeasurementUpdator m_updator;
- double m_cutChiSquaredPerNumberDOF;
- int m_overideMaterialEffects;
- ParticleHypothesis m_overideParticleHypothesis;
- bool m_overideMaterialEffectsSwitch;
-};
-
-} // end Trk namespace
-
-#endif
diff --git a/Tracking/TrkFitter/TrkGaussianSumFilter/TrkGaussianSumFilter/GaussianSumFitter.h b/Tracking/TrkFitter/TrkGaussianSumFilter/TrkGaussianSumFilter/GaussianSumFitter.h
index 5eaaa6eaa60d..5977c8d574e4 100644
--- a/Tracking/TrkFitter/TrkGaussianSumFilter/TrkGaussianSumFilter/GaussianSumFitter.h
+++ b/Tracking/TrkFitter/TrkGaussianSumFilter/TrkGaussianSumFilter/GaussianSumFitter.h
@@ -12,8 +12,10 @@
#include "TrkEventPrimitives/PropDirection.h"
#include "TrkEventUtils/TrkParametersComparisonFunction.h"
#include "TrkFitterInterfaces/ITrackFitter.h"
+#include "TrkGaussianSumFilter/IGsfSmoother.h"
#include "TrkFitterUtils/FitterTypes.h"
#include "TrkFitterUtils/TrackFitInputPreparator.h"
+#include "TrkGaussianSumFilter/GsfMeasurementUpdator.h"
#include "TrkGaussianSumFilter/IMultiStateExtrapolator.h"
#include "TrkParameters/TrackParameters.h"
#include "TrkToolInterfaces/IRIO_OnTrackCreator.h"
@@ -26,8 +28,6 @@
namespace Trk {
class IMultiStateMeasurementUpdator;
class MultiComponentStateOnSurface;
-class IForwardGsfFitter;
-class IGsfSmoother;
class FitQuality;
class Track;
@@ -118,6 +118,33 @@ private:
//* Calculate the fit quality */
const Trk::FitQuality* buildFitQuality(const Trk::SmoothedTrajectory&) const;
+ /** Forward GSF fit using PrepRawData */
+ std::unique_ptr<ForwardTrajectory> fitPRD(
+ const EventContext& ctx,
+ IMultiStateExtrapolator::Cache&,
+ const PrepRawDataSet&,
+ const TrackParameters&,
+ const ParticleHypothesis particleHypothesis = nonInteracting) const;
+
+ /** Forward GSF fit using MeasurementSet */
+ std::unique_ptr<ForwardTrajectory> fitMeasurements(
+ const EventContext& ctx,
+ IMultiStateExtrapolator::Cache&,
+ const MeasurementSet&,
+ const TrackParameters&,
+ const ParticleHypothesis particleHypothesis = nonInteracting) const;
+
+ /** Progress one step along the fit */
+ bool stepForwardFit(
+ const EventContext& ctx,
+ IMultiStateExtrapolator::Cache&,
+ ForwardTrajectory*,
+ const PrepRawData*,
+ const MeasurementBase*,
+ const Surface&,
+ MultiComponentState&,
+ const ParticleHypothesis particleHypothesis = nonInteracting) const;
+
private:
ToolHandle<IMultiStateExtrapolator> m_extrapolator{
this,
@@ -131,12 +158,7 @@ private:
"Trk::RioOnTrackCreator/RIO_OnTrackCreator",
""
};
- ToolHandle<IForwardGsfFitter> m_forwardGsfFitter{
- this,
- "ForwardGsfFitter",
- "Trk::ForwardGsfFitter/ForwardGsfFitter",
- ""
- };
+
ToolHandle<IGsfSmoother> m_gsfSmoother{ this,
"GsfSmoother",
"Trk::GsfSmoother/GsfSmoother",
@@ -173,9 +195,19 @@ private:
PropDirection m_directionToPerigee;
std::unique_ptr<TrkParametersComparisonFunction>
m_trkParametersComparisonFunction;
+
std::unique_ptr<TrackFitInputPreparator> m_inputPreparator;
std::vector<double> m_sortingReferencePoint;
+ // Measurement updator
+ GsfMeasurementUpdator m_updator;
+
+ // For the forward fit part
+ double m_cutChiSquaredPerNumberDOF;
+ int m_overideMaterialEffects;
+ ParticleHypothesis m_overideParticleHypothesis;
+ bool m_overideMaterialEffectsSwitch;
+
// Number of Fit PrepRawData Calls
mutable std::atomic<int> m_FitPRD;
// Number of Fit MeasurementBase Calls
diff --git a/Tracking/TrkFitter/TrkGaussianSumFilter/TrkGaussianSumFilter/IForwardGsfFitter.h b/Tracking/TrkFitter/TrkGaussianSumFilter/TrkGaussianSumFilter/IForwardGsfFitter.h
deleted file mode 100644
index 7d149e85b3e9..000000000000
--- a/Tracking/TrkFitter/TrkGaussianSumFilter/TrkGaussianSumFilter/IForwardGsfFitter.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
-*/
-
-
-/**
- * @file IForwardGsfFitter.h
- * @date Thursday 8th January 2009
- * @author Anthony Morley, Christos Anastopoulos
- * @brief Abstract interface for the forward GSF fitter
- */
-
-#ifndef TrkIForwardGsfFitter_H
-#define TrkIForwardGsfFitter_H
-
-#include "GaudiKernel/IAlgTool.h"
-#include "GaudiKernel/ToolHandle.h"
-#include "TrkEventPrimitives/ParticleHypothesis.h"
-#include "TrkFitterUtils/FitterTypes.h"
-#include "TrkMultiComponentStateOnSurface/MultiComponentState.h"
-#include "TrkGaussianSumFilter/IMultiStateExtrapolator.h"
-#include "TrkParameters/TrackParameters.h"
-#include "GaudiKernel/EventContext.h"
-
-#include <memory>
-namespace Trk {
-
-class IMultiStateMeasurementUpdator;
-class IRIO_OnTrackCreator;
-class Surface;
-
-static const InterfaceID InterfaceID_ForwardGsfFitter("ForwardGsfFitter", 1, 0);
-
-class IForwardGsfFitter : virtual public IAlgTool
-{
-
-public:
- /** AlgTool interface method */
- static const InterfaceID& interfaceID()
- {
- return InterfaceID_ForwardGsfFitter;
- };
-
- /** Virtual destructor */
- virtual ~IForwardGsfFitter() = default;
-
- /** Configure the forward GSF fitter
- - Configure the extrapolator
- - Configure the measurement updator
- - Configure the RIO_OnTrack creator */
- virtual StatusCode configureTools(
- const ToolHandle<Trk::IMultiStateExtrapolator>&,
- const ToolHandle<Trk::IRIO_OnTrackCreator>&) = 0;
-
- /** Forward GSF fit using PrepRawData */
- virtual std::unique_ptr<ForwardTrajectory> fitPRD(
- const EventContext& ctx,
- Trk::IMultiStateExtrapolator::Cache&,
- const PrepRawDataSet&,
- const TrackParameters&,
- const ParticleHypothesis particleHypothesis = nonInteracting) const = 0;
-
- /** Forward GSF fit using MeasurementSet */
- virtual std::unique_ptr<ForwardTrajectory> fitMeasurements(
- const EventContext& ctx,
- Trk::IMultiStateExtrapolator::Cache&,
- const MeasurementSet&,
- const TrackParameters&,
- const ParticleHypothesis particleHypothesis = nonInteracting) const = 0;
-
- /** The interface will later be extended so that the initial state can be
- * additionally a MultiComponentState object!
- */
-};
-
-} // end Trk namespace
-
-#endif
diff --git a/Tracking/TrkFitter/TrkGaussianSumFilter/src/ForwardGsfFitter.cxx b/Tracking/TrkFitter/TrkGaussianSumFilter/src/ForwardGsfFitter.cxx
index dcb47757ab3e..2bacabf144e7 100644
--- a/Tracking/TrkFitter/TrkGaussianSumFilter/src/ForwardGsfFitter.cxx
+++ b/Tracking/TrkFitter/TrkGaussianSumFilter/src/ForwardGsfFitter.cxx
@@ -6,15 +6,13 @@
* @file ForwardGsfFitter.cxx
* @date Wednesday 9th March 2005
* @author Tom Athkinson, Anthony Morley, Christos Anastopoulos
- * @brief Implementation code for ForwardGsfFitter class
+ * @brief Implementation code for the Forward GsfFitter part
*/
-#include "TrkGaussianSumFilter/ForwardGsfFitter.h"
+#include "TrkGaussianSumFilter/GaussianSumFitter.h"
#include "TrkMultiComponentStateOnSurface/MultiComponentStateOnSurface.h"
-
#include "TrkGaussianSumFilter/IMultiStateExtrapolator.h"
#include "TrkGaussianSumFilter/MultiComponentStateCombiner.h"
-
#include "TrkDetElementBase/TrkDetElementBase.h"
#include "TrkEventPrimitives/FitQuality.h"
#include "TrkMeasurementBase/MeasurementBase.h"
@@ -23,70 +21,11 @@
#include "TrkSurfaces/Surface.h"
#include "TrkToolInterfaces/IRIO_OnTrackCreator.h"
-Trk::ForwardGsfFitter::ForwardGsfFitter(const std::string& type,
- const std::string& name,
- const IInterface* parent)
- : AthAlgTool(type, name, parent)
- , m_updator{}
- , m_cutChiSquaredPerNumberDOF(50.)
- , m_overideMaterialEffects(4)
- , m_overideParticleHypothesis(nonInteracting)
- , m_overideMaterialEffectsSwitch(false)
-{
-
- declareInterface<IForwardGsfFitter>(this);
- declareProperty("StateChi2PerNDOFCut", m_cutChiSquaredPerNumberDOF);
- declareProperty("OverideForwardsMaterialEffects",
- m_overideMaterialEffectsSwitch);
- declareProperty("MaterialEffectsInForwardFitter", m_overideMaterialEffects);
-}
-
-StatusCode
-Trk::ForwardGsfFitter::initialize()
-{
-
- ATH_MSG_DEBUG("A cut on Chi2 / NDOF: " << m_cutChiSquaredPerNumberDOF
- << " will be applied");
- Trk::ParticleSwitcher particleSwitcher;
- m_overideParticleHypothesis =
- particleSwitcher.particle[m_overideMaterialEffects];
- if (m_overideMaterialEffectsSwitch) {
- ATH_MSG_INFO("Material effects in forwards fitter have been overiden by "
- "jobOptions... New "
- "Trk::ParticleHypothesis: "
- << m_overideMaterialEffects);
- }
-
- ATH_MSG_INFO("Initialisation of " << name() << " was successful");
-
- return StatusCode::SUCCESS;
-}
-
-StatusCode
-Trk::ForwardGsfFitter::finalize()
-{
- ATH_MSG_INFO("Finalisation of " << name() << " was successful");
- return StatusCode::SUCCESS;
-}
-
-StatusCode
-Trk::ForwardGsfFitter::configureTools(
- const ToolHandle<IMultiStateExtrapolator>& extrapolator,
- const ToolHandle<IRIO_OnTrackCreator>& rioOnTrackCreator)
-{
- m_extrapolator = extrapolator;
- m_rioOnTrackCreator = rioOnTrackCreator;
- ATH_MSG_INFO("Configuration of " << name() << " was successful");
-
- return StatusCode::SUCCESS;
-}
-
/*
* Forwards fit on a set of PrepRawData
*/
-
std::unique_ptr<Trk::ForwardTrajectory>
-Trk::ForwardGsfFitter::fitPRD(
+Trk::GaussianSumFitter::fitPRD(
const EventContext& ctx,
Trk::IMultiStateExtrapolator::Cache& extrapolatorCache,
const Trk::PrepRawDataSet& inputPrepRawDataSet,
@@ -167,7 +106,7 @@ Trk::ForwardGsfFitter::fitPRD(
* Forwards fit on a set of Measurements
*/
std::unique_ptr<Trk::ForwardTrajectory>
-Trk::ForwardGsfFitter::fitMeasurements(
+Trk::GaussianSumFitter::fitMeasurements(
const EventContext& ctx,
Trk::IMultiStateExtrapolator::Cache& extrapolatorCache,
const Trk::MeasurementSet& inputMeasurementSet,
@@ -242,7 +181,7 @@ Trk::ForwardGsfFitter::fitMeasurements(
* StepForwardFit() private method
*/
bool
-Trk::ForwardGsfFitter::stepForwardFit(
+Trk::GaussianSumFitter::stepForwardFit(
const EventContext& ctx,
Trk::IMultiStateExtrapolator::Cache& extrapolatorCache,
ForwardTrajectory* forwardTrajectory,
diff --git a/Tracking/TrkFitter/TrkGaussianSumFilter/src/GaussianSumFitter.cxx b/Tracking/TrkFitter/TrkGaussianSumFilter/src/GaussianSumFitter.cxx
index 3a8d3e982c2d..af90bcceed3a 100644
--- a/Tracking/TrkFitter/TrkGaussianSumFilter/src/GaussianSumFitter.cxx
+++ b/Tracking/TrkFitter/TrkGaussianSumFilter/src/GaussianSumFitter.cxx
@@ -10,8 +10,6 @@
*/
#include "TrkGaussianSumFilter/GaussianSumFitter.h"
-#include "TrkGaussianSumFilter/IForwardGsfFitter.h"
-#include "TrkGaussianSumFilter/IGsfSmoother.h"
#include "TrkGaussianSumFilter/IMultiStateExtrapolator.h"
#include "TrkGaussianSumFilter/MultiComponentStateCombiner.h"
@@ -43,6 +41,11 @@ Trk::GaussianSumFitter::GaussianSumFitter(const std::string& type,
, m_directionToPerigee(Trk::oppositeMomentum)
, m_trkParametersComparisonFunction(nullptr)
, m_inputPreparator(nullptr)
+ , m_updator{}
+ , m_cutChiSquaredPerNumberDOF(50.)
+ , m_overideMaterialEffects(4)
+ , m_overideParticleHypothesis(nonInteracting)
+ , m_overideMaterialEffectsSwitch(false)
, m_FitPRD{ 0 }
, m_FitMeasurementBase{ 0 }
, m_ForwardFailure{ 0 }
@@ -53,6 +56,11 @@ Trk::GaussianSumFitter::GaussianSumFitter(const std::string& type,
{
declareInterface<ITrackFitter>(this);
declareProperty("SortingReferencePoint", m_sortingReferencePoint);
+ declareProperty("StateChi2PerNDOFCut", m_cutChiSquaredPerNumberDOF);
+ declareProperty("OverideForwardsMaterialEffects",
+ m_overideMaterialEffectsSwitch);
+ declareProperty("MaterialEffectsInForwardFitter", m_overideMaterialEffects);
+
// Estrablish reference point as origin
m_sortingReferencePoint.push_back(0.);
m_sortingReferencePoint.push_back(0.);
@@ -64,14 +72,8 @@ Trk::GaussianSumFitter::initialize()
{
StatusCode sc;
-
- // Request the GSF forward fitter - hardwired type and instanace name for the
- // GSF
- ATH_CHECK(m_forwardGsfFitter.retrieve());
-
// Request the GSF smoother - hardwired type and instance name for the GSF
ATH_CHECK(m_gsfSmoother.retrieve());
-
// Request the GSF extrapolator
ATH_CHECK(m_extrapolator.retrieve());
@@ -98,11 +100,14 @@ Trk::GaussianSumFitter::initialize()
m_trkParametersComparisonFunction =
std::make_unique<Trk::TrkParametersComparisonFunction>(referencePosition);
- // Configure forward fitter
- sc = m_forwardGsfFitter->configureTools(m_extrapolator, m_rioOnTrackCreator);
- if (sc.isFailure()) {
- ATH_MSG_FATAL("Could not configure the forwards GSF fitter... Exiting!");
- return StatusCode::FAILURE;
+ Trk::ParticleSwitcher particleSwitcher;
+ m_overideParticleHypothesis =
+ particleSwitcher.particle[m_overideMaterialEffects];
+ if (m_overideMaterialEffectsSwitch) {
+ ATH_MSG_INFO("Material effects in forwards fitter have been overiden by "
+ "jobOptions... New "
+ "Trk::ParticleHypothesis: "
+ << m_overideMaterialEffects);
}
// Configure smoother
@@ -112,18 +117,8 @@ Trk::GaussianSumFitter::initialize()
return StatusCode::FAILURE;
}
- // GSF Statistics Setup;
- m_FitPRD = 0; // Number of Fit PrepRawData Calls
- m_FitMeasurementBase = 0; // Number of Fit MeasurementBase Calls
- m_ForwardFailure = 0; // Number of Foward Fit Failures:
- m_SmootherFailure = 0; // Number of Smoother Failures:
- m_PerigeeFailure = 0; // Number of MakePerigee Failures:
- m_fitQualityFailure = 0;
-
m_inputPreparator = std::make_unique<TrackFitInputPreparator>();
-
ATH_MSG_INFO("Initialisation of " << name() << " was successful");
-
return StatusCode::SUCCESS;
}
@@ -306,14 +301,12 @@ Trk::GaussianSumFitter::fit(
Trk::IMultiStateExtrapolator::Cache extrapolatorCache;
// Perform GSF forwards fit
- ForwardTrajectory* forwardTrajectory =
- m_forwardGsfFitter
- ->fitPRD(ctx,
- extrapolatorCache,
- sortedPrepRawDataSet,
- estimatedParametersNearOrigin,
- particleHypothesis)
- .release();
+ ForwardTrajectory* forwardTrajectory = fitPRD(ctx,
+ extrapolatorCache,
+ sortedPrepRawDataSet,
+ estimatedParametersNearOrigin,
+ particleHypothesis)
+ .release();
if (!forwardTrajectory) {
ATH_MSG_DEBUG("Forward GSF fit failed... Exiting!");
@@ -467,12 +460,11 @@ Trk::GaussianSumFitter::fit(
// Perform GSF forwards fit - new memory allocated in forwards fitter
ForwardTrajectory* forwardTrajectory =
- m_forwardGsfFitter
- ->fitMeasurements(ctx,
- extrapolatorCache,
- sortedMeasurementSet,
- estimatedParametersNearOrigin,
- particleHypothesis)
+ fitMeasurements(ctx,
+ extrapolatorCache,
+ sortedMeasurementSet,
+ estimatedParametersNearOrigin,
+ particleHypothesis)
.release();
if (!forwardTrajectory) {
diff --git a/Tracking/TrkFitter/TrkGaussianSumFilter/src/components/TrkGaussianSumFilter_entries.cxx b/Tracking/TrkFitter/TrkGaussianSumFilter/src/components/TrkGaussianSumFilter_entries.cxx
index ce335d74f2fe..8c2bcfbaffb1 100644
--- a/Tracking/TrkFitter/TrkGaussianSumFilter/src/components/TrkGaussianSumFilter_entries.cxx
+++ b/Tracking/TrkFitter/TrkGaussianSumFilter/src/components/TrkGaussianSumFilter_entries.cxx
@@ -3,7 +3,6 @@
#include "TrkGaussianSumFilter/GsfMaterialEffectsUpdator.h"
#include "TrkGaussianSumFilter/GsfBetheHeitlerEffects.h"
#include "TrkGaussianSumFilter/GaussianSumFitter.h"
-#include "TrkGaussianSumFilter/ForwardGsfFitter.h"
#include "TrkGaussianSumFilter/GsfExtrapolator.h"
#include "TrkGaussianSumFilter/GsfSmoother.h"
@@ -12,6 +11,5 @@ DECLARE_COMPONENT( Trk::GsfCombinedMaterialEffects )
DECLARE_COMPONENT( Trk::GsfMaterialEffectsUpdator )
DECLARE_COMPONENT( Trk::GsfBetheHeitlerEffects )
DECLARE_COMPONENT( Trk::GaussianSumFitter )
-DECLARE_COMPONENT( Trk::ForwardGsfFitter )
DECLARE_COMPONENT( Trk::GsfExtrapolator )
DECLARE_COMPONENT( Trk::GsfSmoother )
--
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