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TrajectoryStateOnSurface.h
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TrajectoryStateOnSurface.h
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#ifndef TrajectoryStateOnSurface_H
#define TrajectoryStateOnSurface_H
#include "TrackingTools/TrajectoryState/interface/BasicTrajectoryState.h"
#include "TrackingTools/TrajectoryState/interface/SurfaceSideDefinition.h"
#include "TrackingTools/TrajectoryState/interface/FreeTrajectoryState.h"
#include "DataFormats/GeometrySurface/interface/Surface.h"
#include <iosfwd>
/** As the class name suggests, this class encapsulates the state of a
* trajectory on a surface.
* The class is a reference counting proxy to the actual state, in other words
* it takes no more space than a pointer. Therefore it should be used by value.
*/
class TrajectoryStateOnSurface : private BasicTrajectoryState::Proxy
{
typedef BasicTrajectoryState::Proxy Base;
public:
// construct
TrajectoryStateOnSurface() {}
/// Constructor from one of the basic states
TrajectoryStateOnSurface( BasicTrajectoryState* p) : Base(p) {}
/** Constructor from FTS and surface. For surfaces with material
* the side of the surface should be specified explicitely.
*/
TrajectoryStateOnSurface( const FreeTrajectoryState& fts,
const Surface& aSurface,
const SurfaceSide side = atCenterOfSurface);
/** Constructor from global parameters and surface. For surfaces with material
* the side of the surface should be specified explicitely.
*/
TrajectoryStateOnSurface( const GlobalTrajectoryParameters& gp,
const Surface& aSurface,
const SurfaceSide side = atCenterOfSurface);
/** Constructor from global parameters, errors and surface. For surfaces
* with material the side of the surface should be specified explicitely.
*/
TrajectoryStateOnSurface( const GlobalTrajectoryParameters& gp,
const CartesianTrajectoryError& err,
const Surface& aSurface,
const SurfaceSide side = atCenterOfSurface);
/** Constructor from global parameters, errors and surface. For surfaces
* with material the side of the surface should be specified explicitely.
* For multi-states the weight should be specified explicitely.
*/
TrajectoryStateOnSurface( const GlobalTrajectoryParameters& gp,
const CurvilinearTrajectoryError& err,
const Surface& aSurface,
const SurfaceSide side = atCenterOfSurface,
double weight = 1.);
/** Constructor from global parameters, errors and surface. For multi-states the
* weight should be specified explicitely. For backward compatibility without
* specification of the side of the surface.
*/
TrajectoryStateOnSurface( const GlobalTrajectoryParameters& gp,
const CurvilinearTrajectoryError& err,
const Surface& aSurface,
double weight);
/** Constructor from local parameters, errors and surface. For surfaces
* with material the side of the surface should be specified explicitely.
*/
TrajectoryStateOnSurface( const LocalTrajectoryParameters& p,
const Surface& aSurface,
const MagneticField* field,
const SurfaceSide side = atCenterOfSurface);
/** Constructor from local parameters, errors and surface. For surfaces
* with material the side of the surface should be specified explicitely.
* For multi-states the weight should be specified explicitely.
*/
TrajectoryStateOnSurface( const LocalTrajectoryParameters& p,
const LocalTrajectoryError& err,
const Surface& aSurface,
const MagneticField* field,
const SurfaceSide side = atCenterOfSurface,
double weight = 1.);
/** Constructor from local parameters, errors and surface. For multi-states the
* weight should be specified explicitely. For backward compatibility without
* specification of the side of the surface.
*/
TrajectoryStateOnSurface( const LocalTrajectoryParameters& p,
const LocalTrajectoryError& err,
const Surface& aSurface,
const MagneticField* field,
double weight);
virtual ~TrajectoryStateOnSurface() {}
bool isValid() const {
return Base::isValid() && data().isValid();
}
bool hasError() const {
return data().hasError();
}
FreeTrajectoryState* freeState(bool withErrors = true) const {
return data().freeTrajectoryState();
}
FreeTrajectoryState* freeTrajectoryState(bool withErrors = true) const {
return freeState();
}
const MagneticField *magneticField() const { return data().magneticField(); }
const GlobalTrajectoryParameters& globalParameters() const {
return data().globalParameters();
}
GlobalPoint globalPosition() const {
return data().globalPosition();
}
GlobalVector globalMomentum() const {
return data().globalMomentum();
}
GlobalVector globalDirection() const {
return data().globalDirection();
}
TrackCharge charge() const {
return data().charge();
}
double signedInverseMomentum() const {
return data().signedInverseMomentum();
}
double transverseCurvature() const {
return data().transverseCurvature();
}
const CartesianTrajectoryError& cartesianError() const {
return data().cartesianError();
}
const CurvilinearTrajectoryError& curvilinearError() const {
return data().curvilinearError();
}
const LocalTrajectoryParameters& localParameters() const {
return data().localParameters();
}
LocalPoint localPosition() const {
return data().localPosition();
}
LocalVector localMomentum() const {
return data().localMomentum();
}
LocalVector localDirection() const {
return data().localDirection();
}
const LocalTrajectoryError& localError() const {
return data().localError();
}
const Surface& surface() const {
return data().surface();
}
double weight() const {return data().weight();}
void rescaleError(double factor) {
unsharedData().rescaleError(factor);
}
std::vector<TrajectoryStateOnSurface> components() const {
return data().components();
}
/*
std::vector<TrajectoryStateOnSurface> components() const {
std::vector<BasicTrajectoryState::RCPtr> c( data().components());
std::vector<TrajectoryStateOnSurface> result;
result.reserve(c.size());
for (std::vector<BasicTrajectoryState::RCPtr>::iterator i=c.begin();
i != c.end(); i++) result.push_back(&(**i));
return result;
}
*/
/// Position relative to material, defined relative to momentum vector.
SurfaceSide surfaceSide() const {
return data().surfaceSide();
}
};
std::ostream& operator<<(std::ostream& os, const TrajectoryStateOnSurface& tsos);
#endif

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