diff --git a/Tracking/TrkExtrapolation/TrkExRungeKuttaPropagator/TrkExRungeKuttaPropagator/RungeKuttaPropagator.h b/Tracking/TrkExtrapolation/TrkExRungeKuttaPropagator/TrkExRungeKuttaPropagator/RungeKuttaPropagator.h
index efedc93345fd25b4546f3054dd414b185163e158..1dd81aec07c856d196b555865de1cacf35b519f9 100755
--- a/Tracking/TrkExtrapolation/TrkExRungeKuttaPropagator/TrkExRungeKuttaPropagator/RungeKuttaPropagator.h
+++ b/Tracking/TrkExtrapolation/TrkExRungeKuttaPropagator/TrkExRungeKuttaPropagator/RungeKuttaPropagator.h
@@ -1,6 +1,6 @@
/*
- Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
-*/
+ Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration
+ */
/////////////////////////////////////////////////////////////////////////////////
// Header file for class RungeKuttaPropagator, (c) ATLAS Detector software
@@ -22,53 +22,53 @@
namespace Trk {
- class Surface ;
- class MagneticFieldProperties ;
- class CylinderBounds ;
- class CylinderSurface ;
- class PatternTrackParameters ;
+class Surface ;
+class MagneticFieldProperties ;
+class CylinderBounds ;
+class CylinderSurface ;
+class PatternTrackParameters ;
- /**
+/**
@class RungeKuttaPropagator
-
+
Trk::RungeKuttaPropagator is algorithm for track parameters propagation through
magnetic field with or without jacobian of transformation. This algorithm
contains three steps.
1.The first step of the algorithm is track parameters transformation from
- local presentation for given start surface to global Runge Kutta coordinates.
+ local presentation for given start surface to global Runge Kutta coordinates.
2.The second step is propagation through magnetic field with or without jacobian.
3.Third step is transformation from global Runge Kutta presentation to local
- presentation of given output surface.
-
-
- AtaPlane AtaStraightLine AtaDisc AtaCylinder Perigee
- | | | | |
- | | | | |
- V V V V V
- -----------------------------------------------------------------
- | Local->Global transformation
- V
- Global position (Runge Kutta presentation)
- |
- |
- Propagation to next surface with or without jacobian
- using Nystroem algorithm
- (See Handbook Net. Bur. of Standards, procedure 25.5.20)
- |
- V Global->Local transformation
- ----------------------------------------------------------------
- | | | | |
- | | | | |
- V V V V V
- PlaneSurface StraightLineSurface DiscSurface CylinderSurface PerigeeSurface
+ presentation of given output surface.
+
+
+ AtaPlane AtaStraightLine AtaDisc AtaCylinder Perigee
+ | | | | |
+ | | | | |
+ V V V V V
+ -----------------------------------------------------------------
+ | Local->Global transformation
+ V
+ Global position (Runge Kutta presentation)
+ |
+ |
+ Propagation to next surface with or without jacobian
+ using Nystroem algorithm
+ (See Handbook Net. Bur. of Standards, procedure 25.5.20)
+ |
+ V Global->Local transformation
+ ----------------------------------------------------------------
+ | | | | |
+ | | | | |
+ V V V V V
+ PlaneSurface StraightLineSurface DiscSurface CylinderSurface PerigeeSurface
For propagation using Runge Kutta method we use global coordinate, direction,
inverse momentum and Jacobian of transformation. All this parameters we save
in array P[42].
- /dL0 /dL1 /dPhi /dThe /dCM
+ /dL0 /dL1 /dPhi /dThe /dCM
X ->P[0] dX / P[ 7] P[14] P[21] P[28] P[35]
Y ->P[1] dY / P[ 8] P[15] P[22] P[29] P[36]
Z ->P[2] dZ / P[ 9] P[16] P[23] P[30] P[37]
@@ -76,393 +76,404 @@ namespace Trk {
Ay ->P[4] dAy/ P[11] P[18] P[25] P[32] P[39]
Az ->P[5] dAz/ P[12] P[19] P[26] P[33] P[40]
CM ->P[6] dCM/ P[13] P[20] P[27] P[34] P[41]
-
+
where
- in case local presentation
+ in case local presentation
- L0 - first local coordinate (surface dependent)
- L1 - second local coordinate (surface dependent)
- Phi - Azimuthal angle
- The - Polar angle
- CM - charge/momentum
+ L0 - first local coordinate (surface dependent)
+ L1 - second local coordinate (surface dependent)
+ Phi - Azimuthal angle
+ The - Polar angle
+ CM - charge/momentum
- in case global presentation
+ in case global presentation
- X - global x-coordinate = surface dependent
- Y - global y-coordinate = surface dependent
- Z - global z-coordinate = sutface dependent
- Ax - direction cosine to x-axis = Sin(The)*Cos(Phi)
- Ay - direction cosine to y-axis = Sin(The)*Sin(Phi)
- Az - direction cosine to z-axis = Cos(The)
- CM - charge/momentum = local CM
+ X - global x-coordinate = surface dependent
+ Y - global y-coordinate = surface dependent
+ Z - global z-coordinate = sutface dependent
+ Ax - direction cosine to x-axis = Sin(The)*Cos(Phi)
+ Ay - direction cosine to y-axis = Sin(The)*Sin(Phi)
+ Az - direction cosine to z-axis = Cos(The)
+ CM - charge/momentum = local CM
- Comment:
- if pointer to const * = 0 algorithm will propagate track
- parameters and jacobian of transformation according straight line model
+Comment:
+if pointer to const * = 0 algorithm will propagate track
+parameters and jacobian of transformation according straight line model
- @author Igor.Gavrilenko@cern.ch
+@author Igor.Gavrilenko@cern.ch
*/
class RungeKuttaPropagator : public AthAlgTool, virtual public IPropagator,
- virtual public IPatternParametersPropagator
- {
- /////////////////////////////////////////////////////////////////////////////////
- // Public methods:
- /////////////////////////////////////////////////////////////////////////////////
-
- public:
-
- RungeKuttaPropagator(const std::string&,const std::string&,const IInterface*);
-
- virtual ~RungeKuttaPropagator ();
-
- /** AlgTool initailize method.*/
- StatusCode initialize();
-
- /** AlgTool finalize method */
- StatusCode finalize();
-
- /** Main propagation mehtod NeutralParameters */
-
- const NeutralParameters* propagate
- (const NeutralParameters &,
- const Surface &,
- PropDirection ,
- BoundaryCheck ,
- bool ) const;
-
- /** Main propagation mehtod without transport jacobian production*/
-
- const TrackParameters* propagate
- (const TrackParameters &,
- const Surface &,
- const PropDirection ,
- BoundaryCheck ,
- const MagneticFieldProperties &,
- ParticleHypothesis ,
- bool ,
- const TrackingVolume* ) const;
-
- /** Main propagation mehtod with transport jacobian production*/
-
- const TrackParameters* propagate
- (const TrackParameters &,
- const Surface &,
- const PropDirection ,
- BoundaryCheck ,
- const MagneticFieldProperties &,
- TransportJacobian *&,
- double &,
- ParticleHypothesis ,
- bool ,
- const TrackingVolume* ) const;
-
- /** The propagation method finds the closest surface */
-
- const TrackParameters* propagate
- (const TrackParameters &,
- std::vector<DestSurf> &,
- PropDirection ,
- const MagneticFieldProperties &,
- ParticleHypothesis ,
- std::vector<unsigned int> &,
- double &,
- bool ,
- bool ,
- const TrackingVolume* ) const;
-
- /** Main propagation mehtod for parameters only without transport jacobian productio*/
-
- const TrackParameters* propagateParameters
- (const TrackParameters &,
- const Surface &,
- const PropDirection ,
- BoundaryCheck ,
- const MagneticFieldProperties &,
- ParticleHypothesis ,
- bool ,
- const TrackingVolume* ) const;
-
-
- /** Main propagation mehtod for parameters only with transport jacobian productio*/
-
- const TrackParameters* propagateParameters
- (const TrackParameters &,
- const Surface &,
- const PropDirection ,
- BoundaryCheck ,
- const MagneticFieldProperties &,
- TransportJacobian *&,
- ParticleHypothesis ,
- bool ,
- const TrackingVolume* ) const;
-
- /** Global position together with direction of the trajectory on the surface */
-
- const IntersectionSolution* intersect
- (const TrackParameters &,
- const Surface &,
- const MagneticFieldProperties &,
- ParticleHypothesis particle=pion,
- const TrackingVolume* tvol=0 ) const;
-
- /** GlobalPositions list interface:*/
-
- void globalPositions
- (std::list<Amg::Vector3D> &,
- const TrackParameters &,
- const MagneticFieldProperties &,
- const CylinderBounds& ,
- double ,
- ParticleHypothesis particle=pion,
- const TrackingVolume* tvol=0 ) const;
-
- /** Test quality Jacobian calculation */
-
- void JacobianTest
- (const TrackParameters &,
- const Surface &,
- const MagneticFieldProperties&) const;
-
- /////////////////////////////////////////////////////////////////////////////////
- // Public methods for Trk::PatternTrackParameters (from IPattern'Propagator)
- /////////////////////////////////////////////////////////////////////////////////
-
- /** Main propagation method */
-
- using IPropagator::propagate;
- bool propagate
- (PatternTrackParameters &,
- const Surface &,
- PatternTrackParameters &,
- PropDirection ,
- const MagneticFieldProperties &,
- ParticleHypothesis particle=pion) const;
-
- /** Main propagation mehtod with step to surface calculation*/
-
- bool propagate
- (PatternTrackParameters &,
- const Surface &,
- PatternTrackParameters &,
- PropDirection ,
- const MagneticFieldProperties &,
- double &,
- ParticleHypothesis particle=pion) const;
-
- /** Main propagation mehtod for parameters only */
-
- bool propagateParameters
- (PatternTrackParameters &,
- const Surface &,
- PatternTrackParameters &,
- PropDirection ,
- const MagneticFieldProperties &,
- ParticleHypothesis particle=pion) const;
-
- /** Main propagation mehtod for parameters only with step to surface calculation*/
-
- bool propagateParameters
- (PatternTrackParameters &,
- const Surface &,
- PatternTrackParameters &,
- PropDirection ,
- const MagneticFieldProperties &,
- double &,
- ParticleHypothesis particle=pion) const;
-
- /** GlobalPositions list interface:*/
-
- void globalPositions
- (std::list<Amg::Vector3D> &,
- const PatternTrackParameters &,
- const MagneticFieldProperties &,
- const CylinderBounds &,
- double ,
- ParticleHypothesis particle=pion) const;
-
- /** GlobalPostions and steps for set surfaces */
-
- void globalPositions
- (const PatternTrackParameters &,
- std::list<const Surface*> &,
- std::list< std::pair<Amg::Vector3D,double> > &,
- const MagneticFieldProperties &,
- ParticleHypothesis particle=pion ) const;
-
- /** a very simple propagation along a given path length */
-
- virtual void propagateStep(const Amg::Vector3D& inputPosition,
- const Amg::Vector3D& inputMomentum,
- double charge,
- double step,
- Amg::Vector3D& outputPosition,
- Amg::Vector3D& outputMomentum,
- const MagneticFieldProperties& mprop);
-
- private:
-
- /////////////////////////////////////////////////////////////////////////////////
- // Private methods:
- /////////////////////////////////////////////////////////////////////////////////
-
- /** Internal RungeKutta propagation method for charge track parameters*/
-
- const TrackParameters* propagateRungeKutta
- (bool ,
- const TrackParameters &,
- const Surface &,
- const PropDirection ,
- BoundaryCheck ,
- const MagneticFieldProperties&,
- double *,
- bool returnCurv) const;
-
- /** Internal RungeKutta propagation method for neutral track parameters*/
-
- const NeutralParameters* propagateStraightLine
- (bool ,
- const NeutralParameters &,
- const Surface &,
- const PropDirection ,
- BoundaryCheck ,
- double *,
- bool returnCurv) const;
-
- /** Internal RungeKutta propagation method */
-
- bool propagateRungeKutta
- (bool ,
- PatternTrackParameters &,
- const Surface &,
- PatternTrackParameters &,
- PropDirection ,
- const MagneticFieldProperties&,
- double &) const;
-
- /** Internal RungeKutta propagation method for propation with jacobian*/
-
- bool propagateWithJacobian
- (bool ,
- int ,
- double *,
- double *,
- double &) const;
-
- /** Propagation methods runge kutta step*/
-
- double rungeKuttaStep
- (bool ,
- double ,
- double *,
- bool &) const;
-
- /** Propagation methods runge kutta step*/
-
- double rungeKuttaStepWithGradient
- (double ,
- double *,
- bool &) const;
-
- /** Propagation methods straight line step*/
-
- double straightLineStep
- (bool ,
- double ,
- double*) const;
-
- /** Test new propagation to cylinder boundary */
-
- bool newCrossPoint
- (const CylinderSurface&,
- const double *,
- const double *) const;
-
- /** Step estimator with directions correction */
-
- double stepEstimatorWithCurvature(int,double*,const double*,bool&) const;
-
- /** Step reduction */
- double stepReduction(const double*) const;
-
- /** Build new track parameters without propagation */
-
- const TrackParameters* buildTrackParametersWithoutPropagation
- (const TrackParameters &,double*) const;
-
- const NeutralParameters* buildTrackParametersWithoutPropagation
- (const NeutralParameters&,double*) const;
-
- void globalOneSidePositions
- (std::list<Amg::Vector3D> &,
- const double *,
- const MagneticFieldProperties &,
- const CylinderBounds &,
- double ,
- ParticleHypothesis particle=pion) const;
-
- void globalTwoSidePositions
- (std::list<Amg::Vector3D> &,
- const double *,
- const MagneticFieldProperties &,
- const CylinderBounds &,
- double ,
- ParticleHypothesis particle=pion) const;
-
- const Trk::TrackParameters* crossPoint
- (const TrackParameters &,
- std::vector<DestSurf> &,
- std::vector<unsigned int>&,
- double *,
- std::pair<double,int> &) const;
-
- void getField (double*,double* ) const;
- void getFieldGradient(double*,double*,double*) const;
-
- //placeholder for compatibility with new interface
- const TrackSurfaceIntersection* intersectSurface(const Surface&,
- const TrackSurfaceIntersection*,
- const double,
- const MagneticFieldProperties&,
- ParticleHypothesis) const {return 0;}
-
- /////////////////////////////////////////////////////////////////////////////////
- // Private data members:
- /////////////////////////////////////////////////////////////////////////////////
-
- double m_dlt ; // accuracy parameter
- double m_helixStep ; // max step whith helix model
- double m_straightStep ; // max step whith srtaight line model
- bool m_usegradient ; // use magnetif field gradient
- mutable double m_direction ;
- mutable double m_step ;
- mutable double m_maxPath ;
- mutable bool m_maxPathLimit ;
- mutable bool m_mcondition ;
- mutable bool m_solenoid ;
- mutable bool m_needgradient ;
- mutable bool m_newfield ;
- mutable double m_field[3] ;
- ServiceHandle<MagField::IMagFieldSvc> m_fieldServiceHandle;
- MagField::IMagFieldSvc* m_fieldService ;
- };
+ virtual public IPatternParametersPropagator
+{
+ /////////////////////////////////////////////////////////////////////////////////
+ // Public methods:
+ /////////////////////////////////////////////////////////////////////////////////
+
+public:
+
+ RungeKuttaPropagator(const std::string&,const std::string&,const IInterface*);
+
+ virtual ~RungeKuttaPropagator ();
+
+ /** AlgTool initailize method.*/
+ StatusCode initialize();
+
+ /** AlgTool finalize method */
+ StatusCode finalize();
+
+ /** Main propagation mehtod NeutralParameters */
+
+ const NeutralParameters* propagate
+ (const NeutralParameters &,
+ const Surface &,
+ PropDirection ,
+ BoundaryCheck ,
+ bool ) const;
+
+ /** Main propagation mehtod without transport jacobian production*/
+
+ const TrackParameters* propagate
+ (const TrackParameters &,
+ const Surface &,
+ const PropDirection ,
+ BoundaryCheck ,
+ const MagneticFieldProperties &,
+ ParticleHypothesis ,
+ bool ,
+ const TrackingVolume* ) const;
+
+ /** Main propagation mehtod with transport jacobian production*/
+
+ const TrackParameters* propagate
+ (const TrackParameters &,
+ const Surface &,
+ const PropDirection ,
+ BoundaryCheck ,
+ const MagneticFieldProperties &,
+ TransportJacobian *&,
+ double &,
+ ParticleHypothesis ,
+ bool ,
+ const TrackingVolume* ) const;
+
+ /** The propagation method finds the closest surface */
+
+ const TrackParameters* propagate
+ (const TrackParameters &,
+ std::vector<DestSurf> &,
+ PropDirection ,
+ const MagneticFieldProperties &,
+ ParticleHypothesis ,
+ std::vector<unsigned int> &,
+ double &,
+ bool ,
+ bool ,
+ const TrackingVolume* ) const;
+
+ /** Main propagation mehtod for parameters only without transport jacobian productio*/
+
+ const TrackParameters* propagateParameters
+ (const TrackParameters &,
+ const Surface &,
+ const PropDirection ,
+ BoundaryCheck ,
+ const MagneticFieldProperties &,
+ ParticleHypothesis ,
+ bool ,
+ const TrackingVolume* ) const;
+
+
+ /** Main propagation mehtod for parameters only with transport jacobian productio*/
+
+ const TrackParameters* propagateParameters
+ (const TrackParameters &,
+ const Surface &,
+ const PropDirection ,
+ BoundaryCheck ,
+ const MagneticFieldProperties &,
+ TransportJacobian *&,
+ ParticleHypothesis ,
+ bool ,
+ const TrackingVolume* ) const;
+
+ /** Global position together with direction of the trajectory on the surface */
+
+ const IntersectionSolution* intersect
+ (const TrackParameters &,
+ const Surface &,
+ const MagneticFieldProperties &,
+ ParticleHypothesis particle=pion,
+ const TrackingVolume* tvol=0 ) const;
+
+ /** GlobalPositions list interface:*/
+
+ void globalPositions
+ (std::list<Amg::Vector3D> &,
+ const TrackParameters &,
+ const MagneticFieldProperties &,
+ const CylinderBounds& ,
+ double ,
+ ParticleHypothesis particle=pion,
+ const TrackingVolume* tvol=0 ) const;
+
+ /** Test quality Jacobian calculation */
+
+ void JacobianTest
+ (const TrackParameters &,
+ const Surface &,
+ const MagneticFieldProperties&) const;
/////////////////////////////////////////////////////////////////////////////////
- // Inline methods for magnetic field information
+ // Public methods for Trk::PatternTrackParameters (from IPattern'Propagator)
/////////////////////////////////////////////////////////////////////////////////
- inline void RungeKuttaPropagator::getField(double* R,double* H) const
- {
- if(m_solenoid) return m_fieldService->getFieldZR(R,H);
- return m_fieldService->getField (R,H);
- }
-
- inline void RungeKuttaPropagator::getFieldGradient(double* R,double* H,double* dH) const
- {
- if(m_solenoid) return m_fieldService->getFieldZR(R,H,dH);
- return m_fieldService->getField (R,H,dH);
- }
+ /** Main propagation method */
+
+ using IPropagator::propagate;
+ bool propagate
+ (PatternTrackParameters &,
+ const Surface &,
+ PatternTrackParameters &,
+ PropDirection ,
+ const MagneticFieldProperties &,
+ ParticleHypothesis particle=pion) const;
+
+ /** Main propagation mehtod with step to surface calculation*/
+
+ bool propagate
+ (PatternTrackParameters &,
+ const Surface &,
+ PatternTrackParameters &,
+ PropDirection ,
+ const MagneticFieldProperties &,
+ double &,
+ ParticleHypothesis particle=pion) const;
+
+ /** Main propagation mehtod for parameters only */
+
+ bool propagateParameters
+ (PatternTrackParameters &,
+ const Surface &,
+ PatternTrackParameters &,
+ PropDirection ,
+ const MagneticFieldProperties &,
+ ParticleHypothesis particle=pion) const;
+
+ /** Main propagation mehtod for parameters only with step to surface calculation*/
+
+ bool propagateParameters
+ (PatternTrackParameters &,
+ const Surface &,
+ PatternTrackParameters &,
+ PropDirection ,
+ const MagneticFieldProperties &,
+ double &,
+ ParticleHypothesis particle=pion) const;
+
+ /** GlobalPositions list interface:*/
+
+ void globalPositions
+ (std::list<Amg::Vector3D> &,
+ const PatternTrackParameters &,
+ const MagneticFieldProperties &,
+ const CylinderBounds &,
+ double ,
+ ParticleHypothesis particle=pion) const;
+
+ /** GlobalPostions and steps for set surfaces */
+
+ void globalPositions
+ (const PatternTrackParameters &,
+ std::list<const Surface*> &,
+ std::list< std::pair<Amg::Vector3D,double> > &,
+ const MagneticFieldProperties &,
+ ParticleHypothesis particle=pion ) const;
+
+ /** a very simple propagation along a given path length */
+
+ virtual void propagateStep(const Amg::Vector3D& inputPosition,
+ const Amg::Vector3D& inputMomentum,
+ double charge,
+ double step,
+ Amg::Vector3D& outputPosition,
+ Amg::Vector3D& outputMomentum,
+ const MagneticFieldProperties& mprop);
+
+private:
+
+ struct Cache{
+ double m_direction ;
+ double m_step ;
+ double m_maxPath ;
+ double m_field[3] ;
+ bool m_maxPathLimit =false;
+ bool m_mcondition =false;
+ bool m_solenoid =true;
+ bool m_needgradient =false;
+ bool m_newfield =true;
+ };
+
+ /////////////////////////////////////////////////////////////////////////////////
+ // Private methods:
+ /////////////////////////////////////////////////////////////////////////////////
+
+ /** Internal RungeKutta propagation method for charge track parameters*/
+
+ const TrackParameters* propagateRungeKutta
+ (Cache& cache ,
+ bool ,
+ const TrackParameters &,
+ const Surface &,
+ const PropDirection ,
+ BoundaryCheck ,
+ const MagneticFieldProperties&,
+ double *,
+ bool returnCurv) const;
+
+ /** Internal RungeKutta propagation method for neutral track parameters*/
+
+ const NeutralParameters* propagateStraightLine
+ (Cache& cache ,
+ bool ,
+ const NeutralParameters &,
+ const Surface &,
+ const PropDirection ,
+ BoundaryCheck ,
+ double *,
+ bool returnCurv) const;
+
+ /** Internal RungeKutta propagation method */
+
+ bool propagateRungeKutta
+ (Cache& cache ,
+ bool ,
+ PatternTrackParameters &,
+ const Surface &,
+ PatternTrackParameters &,
+ PropDirection ,
+ const MagneticFieldProperties&,
+ double &) const;
+
+ /** Internal RungeKutta propagation method for propation with jacobian*/
+
+ bool propagateWithJacobian
+ (Cache& cache ,
+ bool ,
+ int ,
+ double *,
+ double *,
+ double &) const;
+
+ /** Propagation methods runge kutta step*/
+
+ double rungeKuttaStep
+ (Cache& cache,
+ bool ,
+ double ,
+ double *,
+ bool &) const;
+
+ /** Propagation methods runge kutta step*/
+
+ double rungeKuttaStepWithGradient
+ (Cache& cache ,
+ double ,
+ double *,
+ bool &) const;
+
+ /** Propagation methods straight line step*/
+
+ double straightLineStep
+ (bool ,
+ double ,
+ double*) const;
+
+ /** Test new propagation to cylinder boundary */
+
+ bool newCrossPoint
+ (const CylinderSurface&,
+ const double *,
+ const double *) const;
+
+ /** Step estimator with directions correction */
+
+ double stepEstimatorWithCurvature(Cache& cache,int,double*,const double*,bool&) const;
+
+ /** Step reduction */
+ double stepReduction(const double*) const;
+
+ /** Build new track parameters without propagation */
+
+ const TrackParameters* buildTrackParametersWithoutPropagation
+ (const TrackParameters &,double*) const;
+
+ const NeutralParameters* buildTrackParametersWithoutPropagation
+ (const NeutralParameters&,double*) const;
+
+ void globalOneSidePositions
+ (Cache& cache ,
+ std::list<Amg::Vector3D> &,
+ const double *,
+ const MagneticFieldProperties &,
+ const CylinderBounds &,
+ double ,
+ ParticleHypothesis particle=pion) const;
+
+ void globalTwoSidePositions
+ (Cache& cache ,
+ std::list<Amg::Vector3D> &,
+ const double *,
+ const MagneticFieldProperties &,
+ const CylinderBounds &,
+ double ,
+ ParticleHypothesis particle=pion) const;
+
+ const Trk::TrackParameters* crossPoint
+ (const TrackParameters &,
+ std::vector<DestSurf> &,
+ std::vector<unsigned int>&,
+ double *,
+ std::pair<double,int> &) const;
+
+ void getField (Cache& cache, double*,double* ) const;
+ void getFieldGradient(Cache& cache, double*,double*,double*) const;
+
+ //placeholder for compatibility with new interface
+ const TrackSurfaceIntersection* intersectSurface(const Surface&,
+ const TrackSurfaceIntersection*,
+ const double,
+ const MagneticFieldProperties&,
+ ParticleHypothesis) const {return 0;}
+
+ /////////////////////////////////////////////////////////////////////////////////
+ // Private data members:
+ /////////////////////////////////////////////////////////////////////////////////
+
+ double m_dlt ; // accuracy parameter
+ double m_helixStep ; // max step whith helix model
+ double m_straightStep ; // max step whith srtaight line model
+ bool m_usegradient ; // use magnetif field gradient
+ ServiceHandle<MagField::IMagFieldSvc> m_fieldServiceHandle;
+ MagField::IMagFieldSvc* m_fieldService ;
+};
+
+/////////////////////////////////////////////////////////////////////////////////
+// Inline methods for magnetic field information
+/////////////////////////////////////////////////////////////////////////////////
+
+inline void RungeKuttaPropagator::getField(Cache& cache,double* R,double* H) const
+{
+ if(cache.m_solenoid) return m_fieldService->getFieldZR(R,H);
+ return m_fieldService->getField (R,H);
+}
+
+inline void RungeKuttaPropagator::getFieldGradient(Cache& cache,double* R,double* H,double* dH) const
+{
+ if(cache.m_solenoid) return m_fieldService->getFieldZR(R,H,dH);
+ return m_fieldService->getField (R,H,dH);
}
-
+}
+
#endif // RungeKuttaPropagator_H
diff --git a/Tracking/TrkExtrapolation/TrkExRungeKuttaPropagator/src/RungeKuttaPropagator.cxx b/Tracking/TrkExtrapolation/TrkExRungeKuttaPropagator/src/RungeKuttaPropagator.cxx
index 3e5a3db0c7f871cb08aff5abe4019f707611ea23..e489d75ffd0b0364679255d46858360ec370c0c6 100755
--- a/Tracking/TrkExtrapolation/TrkExRungeKuttaPropagator/src/RungeKuttaPropagator.cxx
+++ b/Tracking/TrkExtrapolation/TrkExRungeKuttaPropagator/src/RungeKuttaPropagator.cxx
@@ -33,8 +33,6 @@ Trk::RungeKuttaPropagator::RungeKuttaPropagator
m_straightStep = .01 ;
m_usegradient = false ;
m_fieldService = 0 ;
- m_solenoid = true ;
- m_newfield = true ;
declareInterface<Trk::IPropagator>(this);
declareInterface<Trk::IPatternParametersPropagator>(this);
@@ -90,7 +88,8 @@ const Trk::NeutralParameters* Trk::RungeKuttaPropagator::propagate
bool returnCurv) const
{
double J[25];
- return propagateStraightLine(true,Tp,Su,D,B,J,returnCurv);
+ Cache cache{};
+ return propagateStraightLine(cache,true,Tp,Su,D,B,J,returnCurv);
}
/////////////////////////////////////////////////////////////////////////////////
@@ -109,8 +108,9 @@ const Trk::TrackParameters* Trk::RungeKuttaPropagator::propagate
const TrackingVolume* ) const
{
double J[25];
- m_maxPath = 10000.;
- return propagateRungeKutta(true,Tp,Su,D,B,M,J,returnCurv);
+ Cache cache{};
+ cache.m_maxPath = 10000.;
+ return propagateRungeKutta(cache,true,Tp,Su,D,B,M,J,returnCurv);
}
/////////////////////////////////////////////////////////////////////////////////
@@ -131,9 +131,10 @@ const Trk::TrackParameters* Trk::RungeKuttaPropagator::propagate
const TrackingVolume* ) const
{
double J[25];
- pathLength < 0. ? m_maxPath = 10000. : m_maxPath = pathLength;
- const Trk::TrackParameters* Tpn = propagateRungeKutta(true,Tp,Su,D,B,M,J,returnCurv);
- pathLength = m_step;
+ Cache cache{};
+ pathLength < 0. ? cache.m_maxPath = 10000. : cache.m_maxPath = pathLength;
+ const Trk::TrackParameters* Tpn = propagateRungeKutta(cache,true,Tp,Su,D,B,M,J,returnCurv);
+ pathLength = cache.m_step;
if(Tpn) {
J[24]=J[20]; J[23]=0.; J[22]=0.; J[21]=0.; J[20]=0.;
@@ -159,8 +160,10 @@ const Trk::TrackParameters* Trk::RungeKuttaPropagator::propagate
bool ,
const TrackingVolume* ) const
{
+
+ Cache cache{};
Sol.erase(Sol.begin(),Sol.end()); Path = 0.; if(DS.empty()) return 0;
- m_direction = D;
+ cache.m_direction = D;
// Test is it measured track parameters
//
@@ -168,9 +171,9 @@ const Trk::TrackParameters* Trk::RungeKuttaPropagator::propagate
// Magnetic field information preparation
//
- M.magneticFieldMode()==2 ? m_solenoid = true : m_solenoid = false;
- (useJac && m_usegradient) ? m_needgradient = true : m_needgradient = false;
- M.magneticFieldMode()!=0 ? m_mcondition = true : m_mcondition = false;
+ M.magneticFieldMode()==2 ? cache.m_solenoid = true : cache.m_solenoid = false;
+ (useJac && m_usegradient) ? cache.m_needgradient = true : cache.m_needgradient = false;
+ M.magneticFieldMode()!=0 ? cache.m_mcondition = true : cache.m_mcondition = false;
// Transform to global presentation
//
@@ -220,14 +223,14 @@ const Trk::TrackParameters* Trk::RungeKuttaPropagator::propagate
bool reverted_P = false;
//----------------------------------
- m_newfield = true;
+ cache.m_newfield = true;
while (fabs(W) < Wmax) {
std::pair<double,int> SN;
double S;
- if(m_mcondition) {
+ if(cache.m_mcondition) {
//----------------------------------Niels van Eldik patch
if (reverted_P && St == last_St && InS == last_InS /*&& condition_fulfiled*/) {
@@ -238,8 +241,8 @@ const Trk::TrackParameters* Trk::RungeKuttaPropagator::propagate
last_InS = InS;
//----------------------------------
- if(!m_needgradient) S = rungeKuttaStep (useJac,St,Pn,InS);
- else S = rungeKuttaStepWithGradient( St,Pn,InS);
+ if(!cache.m_needgradient) S = rungeKuttaStep (cache,useJac,St,Pn,InS);
+ else S = rungeKuttaStepWithGradient(cache,St,Pn,InS);
}
else {
@@ -261,7 +264,7 @@ const Trk::TrackParameters* Trk::RungeKuttaPropagator::propagate
bool next; SN=utils.stepEstimator(DS,DN,Po,Pn,W,m_straightStep,Nveto,next);
if(next) {for(int i=0; i!=45; ++i) Po[i]=Pn[i]; W+=S; Nveto=-1; }
- else {for(int i=0; i!=45; ++i) Pn[i]=Po[i]; reverted_P=true; m_newfield= true;}
+ else {for(int i=0; i!=45; ++i) Pn[i]=Po[i]; reverted_P=true; cache.m_newfield= true;}
if (fabs(S)+1. < fabs(St)) Sl=S;
InS ? St = 2.*S : St = S;
@@ -299,8 +302,9 @@ const Trk::TrackParameters* Trk::RungeKuttaPropagator::propagateParameters
const TrackingVolume* ) const
{
double J[25];
- m_maxPath = 10000.;
- return propagateRungeKutta(false,Tp,Su,D,B,M,J,returnCurv);
+ Cache cache;
+ cache.m_maxPath = 10000.;
+ return propagateRungeKutta(cache,false,Tp,Su,D,B,M,J,returnCurv);
}
/////////////////////////////////////////////////////////////////////////////////
@@ -320,8 +324,9 @@ const Trk::TrackParameters* Trk::RungeKuttaPropagator::propagateParameters
const TrackingVolume* ) const
{
double J[25];
- m_maxPath = 10000.;
- const Trk::TrackParameters* Tpn = propagateRungeKutta (true,Tp,Su,D,B,M,J,returnCurv);
+ Cache cache{};
+ cache.m_maxPath = 10000.;
+ const Trk::TrackParameters* Tpn = propagateRungeKutta (cache,true,Tp,Su,D,B,M,J,returnCurv);
if(Tpn) {
J[24]=J[20]; J[23]=0.; J[22]=0.; J[21]=0.; J[20]=0.;
@@ -336,7 +341,8 @@ const Trk::TrackParameters* Trk::RungeKuttaPropagator::propagateParameters
/////////////////////////////////////////////////////////////////////////////////
const Trk::NeutralParameters* Trk::RungeKuttaPropagator::propagateStraightLine
-(bool useJac,
+(Cache& cache ,
+ bool useJac,
const Trk::NeutralParameters & Tp ,
const Trk::Surface & Su ,
Trk::PropDirection D ,
@@ -347,8 +353,8 @@ const Trk::NeutralParameters* Trk::RungeKuttaPropagator::propagateStraightLine
const Trk::Surface* su = &Su;
if(su == &Tp.associatedSurface()) return buildTrackParametersWithoutPropagation(Tp,Jac);
- m_direction = D ;
- m_mcondition = false;
+ cache.m_direction = D ;
+ cache.m_mcondition = false;
Trk::RungeKuttaUtils utils;
@@ -364,12 +370,12 @@ const Trk::NeutralParameters* Trk::RungeKuttaPropagator::propagateStraightLine
if(d>=0.) {s[0]= T(0,2); s[1]= T(1,2); s[2]= T(2,2); s[3]= d;}
else {s[0]=-T(0,2); s[1]=-T(1,2); s[2]=-T(2,2); s[3]=-d;}
- if(!propagateWithJacobian(useJac,1,s,P,Step)) return 0;
+ if(!propagateWithJacobian(cache,useJac,1,s,P,Step)) return 0;
}
else if (ty == Trk::Surface::Line ) {
double s[6] ={T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2)};
- if(!propagateWithJacobian(useJac,0,s,P,Step)) return 0;
+ if(!propagateWithJacobian(cache,useJac,0,s,P,Step)) return 0;
}
else if (ty == Trk::Surface::Disc ) {
@@ -377,37 +383,37 @@ const Trk::NeutralParameters* Trk::RungeKuttaPropagator::propagateStraightLine
if(d>=0.) {s[0]= T(0,2); s[1]= T(1,2); s[2]= T(2,2); s[3]= d;}
else {s[0]=-T(0,2); s[1]=-T(1,2); s[2]=-T(2,2); s[3]=-d;}
- if(!propagateWithJacobian(useJac,1,s,P,Step)) return 0;
+ if(!propagateWithJacobian(cache,useJac,1,s,P,Step)) return 0;
}
else if (ty == Trk::Surface::Cylinder ) {
const Trk::CylinderSurface* cyl = static_cast<const Trk::CylinderSurface*>(su);
double r0[3] = {P[0],P[1],P[2]};
- double s [9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),cyl->bounds().r(),m_direction,0.};
+ double s [9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),cyl->bounds().r(),cache.m_direction,0.};
- if(!propagateWithJacobian(useJac,2,s,P,Step)) return 0;
+ if(!propagateWithJacobian(cache,useJac,2,s,P,Step)) return 0;
// For cylinder we do test for next cross point
//
if(cyl->bounds().halfPhiSector() < 3.1 && newCrossPoint(*cyl,r0,P)) {
- s[8] = 0.; if(!propagateWithJacobian(useJac,2,s,P,Step)) return 0;
+ s[8] = 0.; if(!propagateWithJacobian(cache,useJac,2,s,P,Step)) return 0;
}
}
else if (ty == Trk::Surface::Perigee ) {
double s[6] ={T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2)};
- if(!propagateWithJacobian(useJac,0,s,P,Step)) return 0;
+ if(!propagateWithJacobian(cache,useJac,0,s,P,Step)) return 0;
}
else if (ty == Trk::Surface::Cone ) {
double k = static_cast<const Trk::ConeSurface*>(su)->bounds().tanAlpha(); k = k*k+1.;
- double s[9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),k,m_direction,0.};
- if(!propagateWithJacobian(useJac,3,s,P,Step)) return 0;
+ double s[9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),k,cache.m_direction,0.};
+ if(!propagateWithJacobian(cache,useJac,3,s,P,Step)) return 0;
}
else return 0;
- if(m_direction!=0. && (m_direction*Step)<0.) return 0;
+ if(cache.m_direction!=0. && (cache.m_direction*Step)<0.) return 0;
// Common transformation for all surfaces (angles and momentum)
//
@@ -415,7 +421,7 @@ const Trk::NeutralParameters* Trk::RungeKuttaPropagator::propagateStraightLine
double p=1./P[6]; P[35]*=p; P[36]*=p; P[37]*=p; P[38]*=p; P[39]*=p; P[40]*=p;
}
- if(m_maxPathLimit) returnCurv = true;
+ if(cache.m_maxPathLimit) returnCurv = true;
bool uJ = useJac; if(returnCurv) uJ = false;
@@ -461,7 +467,8 @@ const Trk::NeutralParameters* Trk::RungeKuttaPropagator::propagateStraightLine
/////////////////////////////////////////////////////////////////////////////////
const Trk::TrackParameters* Trk::RungeKuttaPropagator::propagateRungeKutta
-(bool useJac,
+(Cache& cache ,
+ bool useJac,
const Trk::TrackParameters & Tp ,
const Trk::Surface & Su ,
Trk::PropDirection D ,
@@ -472,11 +479,11 @@ const Trk::TrackParameters* Trk::RungeKuttaPropagator::propagateRungeKutta
{
const Trk::Surface* su = &Su;
- m_direction = D ;
+ cache.m_direction = D ;
- M.magneticFieldMode()==2 ? m_solenoid = true : m_solenoid = false;
- (useJac && m_usegradient)? m_needgradient = true : m_needgradient = false;
- M.magneticFieldMode()!=0 ? m_mcondition = true : m_mcondition = false;
+ M.magneticFieldMode()==2 ? cache.m_solenoid = true : cache.m_solenoid = false;
+ (useJac && m_usegradient)? cache.m_needgradient = true : cache.m_needgradient = false;
+ M.magneticFieldMode()!=0 ? cache.m_mcondition = true : cache.m_mcondition = false;
if(su == &Tp.associatedSurface()) return buildTrackParametersWithoutPropagation(Tp,Jac);
@@ -493,49 +500,49 @@ const Trk::TrackParameters* Trk::RungeKuttaPropagator::propagateRungeKutta
if(d>=0.) {s[0]= T(0,2); s[1]= T(1,2); s[2]= T(2,2); s[3]= d;}
else {s[0]=-T(0,2); s[1]=-T(1,2); s[2]=-T(2,2); s[3]=-d;}
- if(!propagateWithJacobian(useJac,1,s,P,Step)) return 0;
+ if(!propagateWithJacobian(cache,useJac,1,s,P,Step)) return 0;
}
else if (ty == Trk::Surface::Line ) {
double s[6] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2)};
- if(!propagateWithJacobian(useJac,0,s,P,Step)) return 0;
+ if(!propagateWithJacobian(cache,useJac,0,s,P,Step)) return 0;
}
else if (ty == Trk::Surface::Disc ) {
double s[4], d = T(0,3)*T(0,2)+T(1,3)*T(1,2)+T(2,3)*T(2,2);
if(d>=0.) {s[0]= T(0,2); s[1]= T(1,2); s[2]= T(2,2); s[3]= d;}
else {s[0]=-T(0,2); s[1]=-T(1,2); s[2]=-T(2,2); s[3]=-d;}
- if(!propagateWithJacobian(useJac,1,s,P,Step)) return 0;
+ if(!propagateWithJacobian(cache,useJac,1,s,P,Step)) return 0;
}
else if (ty == Trk::Surface::Cylinder ) {
const Trk::CylinderSurface* cyl = static_cast<const Trk::CylinderSurface*>(su);
double r0[3] = {P[0],P[1],P[2]};
- double s [9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),cyl->bounds().r(),m_direction,0.};
- if(!propagateWithJacobian(useJac,2,s,P,Step)) return 0;
+ double s [9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),cyl->bounds().r(),cache.m_direction,0.};
+ if(!propagateWithJacobian(cache,useJac,2,s,P,Step)) return 0;
// For cylinder we do test for next cross point
//
if(cyl->bounds().halfPhiSector() < 3.1 && newCrossPoint(*cyl,r0,P)) {
- s[8] = 0.; if(!propagateWithJacobian(useJac,2,s,P,Step)) return 0;
+ s[8] = 0.; if(!propagateWithJacobian(cache,useJac,2,s,P,Step)) return 0;
}
}
else if (ty == Trk::Surface::Perigee ) {
double s[6] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2)};
- if(!propagateWithJacobian(useJac,0,s,P,Step)) return 0;
+ if(!propagateWithJacobian(cache,useJac,0,s,P,Step)) return 0;
}
else if (ty == Trk::Surface::Cone ) {
double k = static_cast<const Trk::ConeSurface*>(su)->bounds().tanAlpha(); k = k*k+1.;
- double s[9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),k,m_direction,0.};
- if(!propagateWithJacobian(useJac,3,s,P,Step)) return 0;
+ double s[9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),k,cache.m_direction,0.};
+ if(!propagateWithJacobian(cache,useJac,3,s,P,Step)) return 0;
}
else return 0;
- if(m_direction && (m_direction*Step)<0.) {return 0;} m_step = Step;
+ if(cache.m_direction && (cache.m_direction*Step)<0.) {return 0;} cache.m_step = Step;
// Common transformation for all surfaces (angles and momentum)
//
@@ -543,7 +550,7 @@ const Trk::TrackParameters* Trk::RungeKuttaPropagator::propagateRungeKutta
double p=1./P[6]; P[35]*=p; P[36]*=p; P[37]*=p; P[38]*=p; P[39]*=p; P[40]*=p;
}
- if(m_maxPathLimit) returnCurv = true;
+ if(cache.m_maxPathLimit) returnCurv = true;
bool uJ = useJac; if(returnCurv) uJ = false;
double p[5]; utils.transformGlobalToLocal(su,uJ,P,p,Jac);
@@ -598,10 +605,10 @@ void Trk::RungeKuttaPropagator::globalPositions
{
Trk::RungeKuttaUtils utils;
double P[45]; if(!utils.transformLocalToGlobal(false,Tp,P)) return;
-
- m_direction = fabs(mS);
- if(mS > 0.) globalOneSidePositions(GP,P,M,CB, mS);
- else globalTwoSidePositions(GP,P,M,CB,-mS);
+ Cache cache{};
+ cache.m_direction = fabs(mS);
+ if(mS > 0.) globalOneSidePositions(cache,GP,P,M,CB, mS);
+ else globalTwoSidePositions(cache,GP,P,M,CB,-mS);
}
/////////////////////////////////////////////////////////////////////////////////
@@ -617,11 +624,12 @@ const Trk::IntersectionSolution* Trk::RungeKuttaPropagator::intersect
{
bool nJ = false;
const Trk::Surface* su = &Su;
- m_direction = 0. ;
+ Cache cache{};
+ cache.m_direction = 0. ;
- m_needgradient = false;
- M.magneticFieldMode()==2 ? m_solenoid = true : m_solenoid = false;
- M.magneticFieldMode()!=0 ? m_mcondition = true : m_mcondition = false;
+ cache.m_needgradient = false;
+ M.magneticFieldMode()==2 ? cache.m_solenoid = true : cache.m_solenoid = false;
+ M.magneticFieldMode()!=0 ? cache.m_mcondition = true : cache.m_mcondition = false;
Trk::RungeKuttaUtils utils;
@@ -637,12 +645,12 @@ const Trk::IntersectionSolution* Trk::RungeKuttaPropagator::intersect
if(d>=0.) {s[0]= T(0,2); s[1]= T(1,2); s[2]= T(2,2); s[3]= d;}
else {s[0]=-T(0,2); s[1]=-T(1,2); s[2]=-T(2,2); s[3]=-d;}
- if(!propagateWithJacobian(nJ,1,s,P,Step)) return 0;
+ if(!propagateWithJacobian(cache,nJ,1,s,P,Step)) return 0;
}
else if (ty == Trk::Surface::Line ) {
double s[6] ={T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2)};
- if(!propagateWithJacobian(nJ,0,s,P,Step)) return 0;
+ if(!propagateWithJacobian(cache,nJ,0,s,P,Step)) return 0;
}
else if (ty == Trk::Surface::Disc ) {
@@ -650,37 +658,37 @@ const Trk::IntersectionSolution* Trk::RungeKuttaPropagator::intersect
if(d>=0.) {s[0]= T(0,2); s[1]= T(1,2); s[2]= T(2,2); s[3]= d;}
else {s[0]=-T(0,2); s[1]=-T(1,2); s[2]=-T(2,2); s[3]=-d;}
- if(!propagateWithJacobian(nJ,1,s,P,Step)) return 0;
+ if(!propagateWithJacobian(cache,nJ,1,s,P,Step)) return 0;
}
else if (ty == Trk::Surface::Cylinder ) {
const Trk::CylinderSurface* cyl = static_cast<const Trk::CylinderSurface*>(su);
double r0[3] = {P[0],P[1],P[2]};
- double s [9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),cyl->bounds().r(),m_direction,0.};
+ double s [9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),cyl->bounds().r(),cache.m_direction,0.};
- if(!propagateWithJacobian(nJ,2,s,P,Step)) return 0;
+ if(!propagateWithJacobian(cache,nJ,2,s,P,Step)) return 0;
// For cylinder we do test for next cross point
//
if(cyl->bounds().halfPhiSector() < 3.1 && newCrossPoint(*cyl,r0,P)) {
- s[8] = 0.; if(!propagateWithJacobian(nJ,2,s,P,Step)) return 0;
+ s[8] = 0.; if(!propagateWithJacobian(cache,nJ,2,s,P,Step)) return 0;
}
}
else if (ty == Trk::Surface::Perigee ) {
double s[6] ={T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2)};
- if(!propagateWithJacobian(nJ,0,s,P,Step)) return 0;
+ if(!propagateWithJacobian(cache,nJ,0,s,P,Step)) return 0;
}
else if (ty == Trk::Surface::Cone ) {
double k = static_cast<const Trk::ConeSurface*>(su)->bounds().tanAlpha(); k = k*k+1.;
- double s[9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),k,m_direction,0.};
- if(!propagateWithJacobian(nJ,3,s,P,Step)) return 0;
+ double s[9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),k,cache.m_direction,0.};
+ if(!propagateWithJacobian(cache,nJ,3,s,P,Step)) return 0;
}
else return 0;
- if(m_maxPathLimit) return 0;
+ if(cache.m_maxPathLimit) return 0;
Amg::Vector3D Glo(P[0],P[1],P[2]);
Amg::Vector3D Dir(P[3],P[4],P[5]);
@@ -694,21 +702,22 @@ const Trk::IntersectionSolution* Trk::RungeKuttaPropagator::intersect
/////////////////////////////////////////////////////////////////////////////////
bool Trk::RungeKuttaPropagator::propagateWithJacobian
-(bool Jac ,
+(Cache& cache ,
+ bool Jac ,
int kind ,
double * Su,
double * P ,
double & W ) const
{
const double Smax = 1000. ; // max. step allowed
- double Wmax = m_maxPath ; // Max way allowed
+ double Wmax = cache.m_maxPath ; // Max way allowed
double Wwrong = 500. ; // Max way with wrong direction
double* R = &P[ 0] ; // Start coordinates
double* A = &P[ 3] ; // Start directions
double* SA = &P[42] ; SA[0]=SA[1]=SA[2]=0.;
- m_maxPathLimit = false ;
+ cache.m_maxPathLimit = false ;
- if(m_mcondition && fabs(P[6]) > .1) return false;
+ if(cache.m_mcondition && fabs(P[6]) > .1) return false;
// Step estimation until surface
//
@@ -716,7 +725,7 @@ bool Trk::RungeKuttaPropagator::propagateWithJacobian
bool Q; double S, Step=utils.stepEstimator(kind,Su,P,Q); if(!Q) return false;
bool dir = true;
- if(m_mcondition && m_direction && m_direction*Step < 0.) {
+ if(cache.m_mcondition && cache.m_direction && cache.m_direction*Step < 0.) {
Step = -Step; dir = false;
}
@@ -728,24 +737,24 @@ bool Trk::RungeKuttaPropagator::propagateWithJacobian
// Rkuta extrapolation
//
int niter = 0;
- m_newfield = true;
+ cache.m_newfield = true;
while(fabs(Step) > m_straightStep) {
if(++niter > 10000) return false;
- if(m_mcondition) {
+ if(cache.m_mcondition) {
- if(!m_needgradient) W+=(S=rungeKuttaStep (Jac,S,P,InS));
- else W+=(S=rungeKuttaStepWithGradient( S,P,InS));
+ if(!cache.m_needgradient) W+=(S=rungeKuttaStep (cache,Jac,S,P,InS));
+ else W+=(S=rungeKuttaStepWithGradient(cache,S,P,InS));
}
else {
W+=(S=straightLineStep(Jac,S,P));
}
- Step = stepEstimatorWithCurvature(kind,Su,P,Q); if(!Q) return false;
+ Step = stepEstimatorWithCurvature(cache,kind,Su,P,Q); if(!Q) return false;
if(!dir) {
- if(m_direction && m_direction*Step < 0.) Step = -Step;
+ if(cache.m_direction && cache.m_direction*Step < 0.) Step = -Step;
else dir = true;
}
@@ -759,7 +768,7 @@ bool Trk::RungeKuttaPropagator::propagateWithJacobian
if(iS > 10 || (iS>3 && fabs(S)>=So)) {if(!kind) break; return false;}
double dW = Wmax-fabs(W);
- if(fabs(S) > dW) {S > 0. ? S = dW : S = -dW; Step = S; m_maxPathLimit = true;}
+ if(fabs(S) > dW) {S > 0. ? S = dW : S = -dW; Step = S; cache.m_maxPathLimit = true;}
So=fabs(S);
}
@@ -786,7 +795,8 @@ bool Trk::RungeKuttaPropagator::propagateWithJacobian
/////////////////////////////////////////////////////////////////////////////////
double Trk::RungeKuttaPropagator::rungeKuttaStep
- (bool Jac,
+ (Cache& cache,
+ bool Jac,
double S ,
double * P ,
bool & InS) const
@@ -798,7 +808,7 @@ double Trk::RungeKuttaPropagator::rungeKuttaStep
double dltm = m_dlt*.03 ;
double f0[3],f[3];
- if(m_newfield) getField(R,f0); else {f0[0]=m_field[0]; f0[1]=m_field[1]; f0[2]=m_field[2];}
+ if(cache.m_newfield) getField(cache,R,f0); else {f0[0]=cache.m_field[0]; f0[1]=cache.m_field[1]; f0[2]=cache.m_field[2];}
bool Helix = false; if(fabs(S) < m_helixStep) Helix = true;
while(S != 0.) {
@@ -822,7 +832,7 @@ double Trk::RungeKuttaPropagator::rungeKuttaStep
//
if(!Helix) {
double gP[3]={R[0]+A1*S4, R[1]+B1*S4, R[2]+C1*S4};
- getField(gP,f);
+ getField(cache,gP,f);
}
else {f[0]=f0[0]; f[1]=f0[1]; f[2]=f0[2];}
@@ -841,7 +851,7 @@ double Trk::RungeKuttaPropagator::rungeKuttaStep
//
if(!Helix) {
double gP[3]={R[0]+S*A4, R[1]+S*B4, R[2]+S*C4};
- getField(gP,f);
+ getField(cache,gP,f);
}
else {f[0]=f0[0]; f[1]=f0[1]; f[2]=f0[2];}
@@ -886,7 +896,7 @@ double Trk::RungeKuttaPropagator::rungeKuttaStep
sA[1] = B6*Sl ;
sA[2] = C6*Sl ;
- m_field[0]=f[0]; m_field[1]=f[1]; m_field[2]=f[2]; m_newfield = false;
+ cache.m_field[0]=f[0]; cache.m_field[1]=f[1]; cache.m_field[2]=f[2]; cache.m_newfield = false;
if(!Jac) return S;
@@ -993,7 +1003,8 @@ double Trk::RungeKuttaPropagator::rungeKuttaStep
/////////////////////////////////////////////////////////////////////////////////
double Trk::RungeKuttaPropagator::rungeKuttaStepWithGradient
-(double S ,
+(Cache& cache,
+ double S ,
double * P ,
bool & InS) const
{
@@ -1005,7 +1016,7 @@ double Trk::RungeKuttaPropagator::rungeKuttaStepWithGradient
double dltm = m_dlt*.03 ;
double f0[3],f1[3],f2[3],g0[9],g1[9],g2[9],H0[12],H1[12],H2[12];
- getFieldGradient(R,f0,g0);
+ getFieldGradient(cache,R,f0,g0);
while(S != 0.) {
@@ -1028,7 +1039,7 @@ double Trk::RungeKuttaPropagator::rungeKuttaStepWithGradient
// Second point
//
double gP1[3]={R[0]+A1*S4, R[1]+B1*S4, R[2]+C1*S4};
- getFieldGradient(gP1,f1,g1);
+ getFieldGradient(cache,gP1,f1,g1);
H1[0] = f1[0]*PS2; H1[1] = f1[1]*PS2; H1[2] = f1[2]*PS2;
double A3 = B2*H1[2]-C2*H1[1]+A[0] ;
@@ -1044,7 +1055,7 @@ double Trk::RungeKuttaPropagator::rungeKuttaStepWithGradient
// Last point
//
double gP2[3]={R[0]+S*A4, R[1]+S*B4, R[2]+S*C4};
- getFieldGradient(gP2,f2,g2);
+ getFieldGradient(cache,gP2,f2,g2);
H2[0] = f2[0]*PS2; H2[1] = f2[1]*PS2; H2[2] = f2[2]*PS2;
double A6 = B5*H2[2]-C5*H2[1] ;
@@ -1199,8 +1210,9 @@ bool Trk::RungeKuttaPropagator::propagate
ParticleHypothesis ) const
{
double S;
- m_maxPath = 10000.;
- return propagateRungeKutta(true,Ta,Su,Tb,D,M,S);
+ Cache cache{};
+ cache.m_maxPath = 10000.;
+ return propagateRungeKutta(cache,true,Ta,Su,Tb,D,M,S);
}
/////////////////////////////////////////////////////////////////////////////////
@@ -1217,8 +1229,9 @@ bool Trk::RungeKuttaPropagator::propagate
double & S ,
ParticleHypothesis ) const
{
- m_maxPath = 10000.;
- return propagateRungeKutta(true,Ta,Su,Tb,D,M,S);
+ Cache cache{};
+ cache.m_maxPath = 10000.;
+ return propagateRungeKutta(cache,true,Ta,Su,Tb,D,M,S);
}
/////////////////////////////////////////////////////////////////////////////////
@@ -1235,8 +1248,9 @@ bool Trk::RungeKuttaPropagator::propagateParameters
ParticleHypothesis ) const
{
double S;
- m_maxPath = 10000.;
- return propagateRungeKutta(false,Ta,Su,Tb,D,M,S);
+ Cache cache{};
+ cache.m_maxPath = 10000.;
+ return propagateRungeKutta(cache,false,Ta,Su,Tb,D,M,S);
}
/////////////////////////////////////////////////////////////////////////////////
@@ -1253,8 +1267,9 @@ bool Trk::RungeKuttaPropagator::propagateParameters
double & S ,
ParticleHypothesis ) const
{
- m_maxPath = 10000.;
- return propagateRungeKutta(false,Ta,Su,Tb,D,M,S);
+ Cache cache{};
+ cache.m_maxPath = 10000.;
+ return propagateRungeKutta(cache,false,Ta,Su,Tb,D,M,S);
}
/////////////////////////////////////////////////////////////////////////////////
@@ -1274,9 +1289,10 @@ void Trk::RungeKuttaPropagator::globalPositions
Trk::RungeKuttaUtils utils;
double P[45]; if(!utils.transformLocalToGlobal(false,Tp,P)) return;
- m_direction = fabs(mS);
- if(mS > 0.) globalOneSidePositions(GP,P,M,CB, mS);
- else globalTwoSidePositions(GP,P,M,CB,-mS);
+ Cache cache{};
+ cache.m_direction = fabs(mS);
+ if(mS > 0.) globalOneSidePositions(cache,GP,P,M,CB, mS);
+ else globalTwoSidePositions(cache,GP,P,M,CB,-mS);
}
/////////////////////////////////////////////////////////////////////////////////
@@ -1284,18 +1300,20 @@ void Trk::RungeKuttaPropagator::globalPositions
/////////////////////////////////////////////////////////////////////////////////
void Trk::RungeKuttaPropagator::globalPositions
-(const PatternTrackParameters & Tp,
+(
+ const PatternTrackParameters & Tp,
std::list<const Trk::Surface*> & SU,
std::list< std::pair<Amg::Vector3D,double> > & GP,
const Trk::MagneticFieldProperties & M ,
ParticleHypothesis ) const
{
- m_direction = 0. ;
- m_mcondition = false ;
- m_maxPath = 10000.;
- m_needgradient = false;
- M.magneticFieldMode()==2 ? m_solenoid = true : m_solenoid = false;
- M.magneticFieldMode()!=0 ? m_mcondition = true : m_mcondition = false;
+ Cache cache{};
+ cache.m_direction = 0. ;
+ cache.m_mcondition = false ;
+ cache.m_maxPath = 10000.;
+ cache.m_needgradient = false;
+ M.magneticFieldMode()==2 ? cache.m_solenoid = true : cache.m_solenoid = false;
+ M.magneticFieldMode()!=0 ? cache.m_mcondition = true : cache.m_mcondition = false;
Trk::RungeKuttaUtils utils;
@@ -1317,48 +1335,48 @@ void Trk::RungeKuttaPropagator::globalPositions
if(d>=0.) {s[0]= T(0,2); s[1]= T(1,2); s[2]= T(2,2); s[3]= d;}
else {s[0]=-T(0,2); s[1]=-T(1,2); s[2]=-T(2,2); s[3]=-d;}
- if(!propagateWithJacobian(false,1,s,P,Step)) return;
+ if(!propagateWithJacobian(cache,false,1,s,P,Step)) return;
}
else if(ty == Trk::Surface::Line ) {
double s[6]={T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2)};
- if(!propagateWithJacobian(false,0,s,P,Step)) return;
+ if(!propagateWithJacobian(cache,false,0,s,P,Step)) return;
}
else if (ty == Trk::Surface::Disc ) {
double s[4],d = T(0,3)*T(0,2)+T(1,3)*T(1,2)+T(2,3)*T(2,2);
if(d>=0.) {s[0]= T(0,2); s[1]= T(1,2); s[2]= T(2,2); s[3]= d;}
else {s[0]=-T(0,2); s[1]=-T(1,2); s[2]=-T(2,2); s[3]=-d;}
- if(!propagateWithJacobian(false,1,s,P,Step)) return;
+ if(!propagateWithJacobian(cache,false,1,s,P,Step)) return;
}
else if (ty == Trk::Surface::Cylinder ) {
const Trk::CylinderSurface* cyl = static_cast<const Trk::CylinderSurface*>(*su);
double r0[3] = {P[0],P[1],P[2]};
- double s [9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),cyl->bounds().r(),m_direction,0.};
+ double s [9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),cyl->bounds().r(),cache.m_direction,0.};
- if(!propagateWithJacobian(false,2,s,P,Step)) return;
+ if(!propagateWithJacobian(cache,false,2,s,P,Step)) return;
// For cylinder we do test for next cross point
//
if(cyl->bounds().halfPhiSector() < 3.1 && newCrossPoint(*cyl,r0,P)) {
- s[8] = 0.; if(!propagateWithJacobian(false,2,s,P,Step)) return;
+ s[8] = 0.; if(!propagateWithJacobian(cache,false,2,s,P,Step)) return;
}
}
else if (ty == Trk::Surface::Perigee ) {
double s[6]={T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2)};
- if(!propagateWithJacobian(false,0,s,P,Step)) return ;
+ if(!propagateWithJacobian(cache,false,0,s,P,Step)) return ;
}
else if (ty == Trk::Surface::Cone ) {
double k = static_cast<const Trk::ConeSurface*>(*su)->bounds().tanAlpha(); k = k*k+1.;
- double s[9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),k,m_direction,0.};
- if(!propagateWithJacobian(false,3,s,P,Step)) return;
+ double s[9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),k,cache.m_direction,0.};
+ if(!propagateWithJacobian(cache,false,3,s,P,Step)) return;
}
else return;
- if(m_maxPathLimit) return;
+ if(cache.m_maxPathLimit) return;
Amg::Vector3D gp(P[0],P[1],P[2]); GP.push_back(std::make_pair(gp,Step));
}
@@ -1370,7 +1388,8 @@ void Trk::RungeKuttaPropagator::globalPositions
/////////////////////////////////////////////////////////////////////////////////
bool Trk::RungeKuttaPropagator::propagateRungeKutta
-(bool useJac,
+(Cache& cache,
+ bool useJac,
Trk::PatternTrackParameters & Ta ,
const Trk::Surface & Su ,
Trk::PatternTrackParameters & Tb ,
@@ -1381,13 +1400,13 @@ bool Trk::RungeKuttaPropagator::propagateRungeKutta
const Trk::Surface* su = &Su; if(!su) return false;
if(su == Ta.associatedSurface()) {Tb = Ta; return true;}
- m_direction = D ;
+ cache.m_direction = D ;
if(useJac && !Ta.iscovariance()) useJac = false;
- M.magneticFieldMode()==2 ? m_solenoid = true : m_solenoid = false;
- (useJac && m_usegradient) ? m_needgradient = true : m_needgradient = false;
- M.magneticFieldMode()!=0 ? m_mcondition = true : m_mcondition = false;
+ M.magneticFieldMode()==2 ? cache.m_solenoid = true : cache.m_solenoid = false;
+ (useJac && m_usegradient) ? cache.m_needgradient = true : cache.m_needgradient = false;
+ M.magneticFieldMode()!=0 ? cache.m_mcondition = true : cache.m_mcondition = false;
Trk::RungeKuttaUtils utils;
@@ -1402,12 +1421,12 @@ bool Trk::RungeKuttaPropagator::propagateRungeKutta
if(d>=0.) {s[0]= T(0,2); s[1]= T(1,2); s[2]= T(2,2); s[3]= d;}
else {s[0]=-T(0,2); s[1]=-T(1,2); s[2]=-T(2,2); s[3]=-d;}
- if(!propagateWithJacobian(useJac,1,s,P,Step)) return false;
+ if(!propagateWithJacobian(cache,useJac,1,s,P,Step)) return false;
}
else if (ty == Trk::Surface::Line ) {
double s[6] ={T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2)};
- if(!propagateWithJacobian(useJac,0,s,P,Step)) return false;
+ if(!propagateWithJacobian(cache,useJac,0,s,P,Step)) return false;
}
else if (ty == Trk::Surface::Disc ) {
@@ -1415,37 +1434,37 @@ bool Trk::RungeKuttaPropagator::propagateRungeKutta
if(d>=0.) {s[0]= T(0,2); s[1]= T(1,2); s[2]= T(2,2); s[3]= d;}
else {s[0]=-T(0,2); s[1]=-T(1,2); s[2]=-T(2,2); s[3]=-d;}
- if(!propagateWithJacobian(useJac,1,s,P,Step)) return false;
+ if(!propagateWithJacobian(cache,useJac,1,s,P,Step)) return false;
}
else if (ty == Trk::Surface::Cylinder ) {
const Trk::CylinderSurface* cyl = static_cast<const Trk::CylinderSurface*>(su);
double r0[3] = {P[0],P[1],P[2]};
- double s [9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),cyl->bounds().r(),m_direction,0.};
+ double s [9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),cyl->bounds().r(),cache.m_direction,0.};
- if(!propagateWithJacobian(useJac,2,s,P,Step)) return false;
+ if(!propagateWithJacobian(cache,useJac,2,s,P,Step)) return false;
// For cylinder we do test for next cross point
//
if(cyl->bounds().halfPhiSector() < 3.1 && newCrossPoint(*cyl,r0,P)) {
- s[8] = 0.; if(!propagateWithJacobian(useJac,2,s,P,Step)) return false;
+ s[8] = 0.; if(!propagateWithJacobian(cache,useJac,2,s,P,Step)) return false;
}
}
else if (ty == Trk::Surface::Perigee ) {
double s[6] ={T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2)};
- if(!propagateWithJacobian(useJac,0,s,P,Step)) return false;
+ if(!propagateWithJacobian(cache,useJac,0,s,P,Step)) return false;
}
else if (ty == Trk::Surface::Cone ) {
double k = static_cast<const Trk::ConeSurface*>(su)->bounds().tanAlpha(); k = k*k+1.;
- double s[9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),k,m_direction,0.};
- if(!propagateWithJacobian(useJac,3,s,P,Step)) return false;
+ double s[9] = {T(0,3),T(1,3),T(2,3),T(0,2),T(1,2),T(2,2),k,cache.m_direction,0.};
+ if(!propagateWithJacobian(cache,useJac,3,s,P,Step)) return false;
}
else return false;
- if(m_maxPathLimit || (m_direction && (m_direction*Step)<0.)) return false;
+ if(cache.m_maxPathLimit || (cache.m_direction && (cache.m_direction*Step)<0.)) return false;
// Common transformation for all surfaces (angles and momentum)
//
@@ -1530,14 +1549,14 @@ const Trk::NeutralParameters* Trk::RungeKuttaPropagator::buildTrackParametersWit
/////////////////////////////////////////////////////////////////////////////////
double Trk::RungeKuttaPropagator::stepEstimatorWithCurvature
-(int kind,double* Su,const double* P,bool& Q) const
+(Cache& cache, int kind,double* Su,const double* P,bool& Q) const
{
// Straight step estimation
//
Trk::RungeKuttaUtils utils;
double Step = utils.stepEstimator(kind,Su,P,Q); if(!Q) return 0.;
double AStep = fabs(Step);
- if( kind || AStep < m_straightStep || !m_mcondition ) return Step;
+ if( kind || AStep < m_straightStep || !cache.m_mcondition ) return Step;
const double* SA = &P[42]; // Start direction
double S = .5*Step;
@@ -1560,15 +1579,16 @@ double Trk::RungeKuttaPropagator::stepEstimatorWithCurvature
/////////////////////////////////////////////////////////////////////////////////
void Trk::RungeKuttaPropagator::globalOneSidePositions
-(std::list<Amg::Vector3D> & GP,
+(Cache & cache,
+ std::list<Amg::Vector3D> & GP,
const double * P,
const MagneticFieldProperties & M ,
const CylinderBounds & CB,
double mS,
ParticleHypothesis ) const
{
- M.magneticFieldMode()==2 ? m_solenoid = true : m_solenoid = false;
- M.magneticFieldMode()!=0 ? m_mcondition = true : m_mcondition = false;
+ M.magneticFieldMode()==2 ? cache.m_solenoid = true : cache.m_solenoid = false;
+ M.magneticFieldMode()!=0 ? cache.m_mcondition = true : cache.m_mcondition = false;
double Pm[45]; for(int i=0; i!=7; ++i) Pm[i]=P[i];
@@ -1580,7 +1600,7 @@ void Trk::RungeKuttaPropagator::globalOneSidePositions
double S = mS ; // max step allowed
double R2m = R2 ;
- if(m_mcondition && fabs(P[6]) > .1) return;
+ if(cache.m_mcondition && fabs(P[6]) > .1) return;
// Test position of the track
//
@@ -1595,15 +1615,15 @@ void Trk::RungeKuttaPropagator::globalOneSidePositions
int sm = 1;
for(int s = 0; s!=2; ++s) {
- m_newfield = true;
+ cache.m_newfield = true;
if(s) {if(per) break; S = -S;}
double p[45]; for(int i=0; i!=7; ++i) p[i]=P[i]; p[42]=p[43]=p[44]=0.;
while(W<100000. && ++niter < 1000) {
- if(m_mcondition) {
- W+=(S=rungeKuttaStep (0,S,p,InS));
+ if(cache.m_mcondition) {
+ W+=(S=rungeKuttaStep (cache,0,S,p,InS));
}
else {
W+=(S=straightLineStep(0, S,p));
@@ -1642,14 +1662,14 @@ void Trk::RungeKuttaPropagator::globalOneSidePositions
for(int s = 0; s!=3; ++s) {
- m_newfield = true;
+ cache.m_newfield = true;
double A = (1.-Pm[5])*(1.+Pm[5]); if(A==0.) break;
S = -(Pm[0]*Pm[3]+Pm[1]*Pm[4])/A;
if(fabs(S) < 1. || ++niter > 1000) break;
- if(m_mcondition) {
- W+=rungeKuttaStep(0,S,Pm,InS);
+ if(cache.m_mcondition) {
+ W+=rungeKuttaStep(cache,0,S,Pm,InS);
}
else {
W+=straightLineStep(0,S,Pm);
@@ -1678,15 +1698,16 @@ void Trk::RungeKuttaPropagator::globalOneSidePositions
/////////////////////////////////////////////////////////////////////////////////
void Trk::RungeKuttaPropagator::globalTwoSidePositions
-(std::list<Amg::Vector3D> & GP,
+(Cache& cache,
+ std::list<Amg::Vector3D> & GP,
const double * P,
const MagneticFieldProperties & M ,
const CylinderBounds & CB,
double mS,
ParticleHypothesis ) const
{
- M.magneticFieldMode()==2 ? m_solenoid = true : m_solenoid = false;
- M.magneticFieldMode()!=0 ? m_mcondition = true : m_mcondition = false;
+ M.magneticFieldMode()==2 ? cache.m_solenoid = true : cache.m_solenoid = false;
+ M.magneticFieldMode()!=0 ? cache.m_mcondition = true : cache.m_mcondition = false;
double W = 0. ; // way
double R2max = CB.r()*CB.r() ; // max. radius**2 of region
@@ -1694,7 +1715,7 @@ void Trk::RungeKuttaPropagator::globalTwoSidePositions
double R2 = P[0]*P[0]+P[1]*P[1]; // Start radius**2
double S = mS ; // max step allowed
- if(m_mcondition && fabs(P[6]) > .1) return;
+ if(cache.m_mcondition && fabs(P[6]) > .1) return;
// Test position of the track
//
@@ -1707,15 +1728,15 @@ void Trk::RungeKuttaPropagator::globalTwoSidePositions
int niter = 0;
for(int s = 0; s!=2; ++s) {
- m_newfield = true;
+ cache.m_newfield = true;
if(s) {S = -S;}
double p[45]; for(int i=0; i!=7; ++i) p[i]=P[i]; p[42]=p[43]=p[44]=0.;
while(W<100000. && ++niter < 1000) {
- if(m_mcondition) {
- W+=(S=rungeKuttaStep (0,S,p,InS));
+ if(cache.m_mcondition) {
+ W+=(S=rungeKuttaStep (cache,0,S,p,InS));
}
else {
W+=(S=straightLineStep(0, S,p));
@@ -1817,16 +1838,17 @@ double Trk::RungeKuttaPropagator::stepReduction(const double* E) const
/////////////////////////////////////////////////////////////////////////////////
void Trk::RungeKuttaPropagator::propagateStep
-(const Amg::Vector3D& Ri,const Amg::Vector3D& Pi,
+( const Amg::Vector3D& Ri,const Amg::Vector3D& Pi,
double Charge,double Step,
Amg::Vector3D& Ro, Amg::Vector3D& Po,
const MagneticFieldProperties& Mag)
{
+ Cache cache{};
// Magnetic field information preparation
//
- Mag.magneticFieldMode()==2 ? m_solenoid = true : m_solenoid = false;
- Mag.magneticFieldMode()!=0 ? m_mcondition = true : m_mcondition = false;
+ Mag.magneticFieldMode()==2 ? cache.m_solenoid = true : cache.m_solenoid = false;
+ Mag.magneticFieldMode()!=0 ? cache.m_mcondition = true : cache.m_mcondition = false;
double M = sqrt(Pi[0]*Pi[0]+Pi[1]*Pi[1]+Pi[2]*Pi[2]); if(M < .00001) {Ro = Ri; Po = Pi; return;}
double Mi = 1./M;
@@ -1839,11 +1861,11 @@ void Trk::RungeKuttaPropagator::propagateStep
double S = Step ;
double W = 0. ;
- m_newfield = true;
+ cache.m_newfield = true;
while (true) {
- if(m_mcondition) {W+=(S=rungeKuttaStep (false,S,P,In));}
+ if(cache.m_mcondition) {W+=(S=rungeKuttaStep (cache,false,S,P,In));}
else {W+=(S=straightLineStep(false,S,P ));}
double ws = Step-W ;