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#ifndef Alignment_CommonAlignment_BeamSpotAlignmentParameters_h
#define Alignment_CommonAlignment_BeamSpotAlignmentParameters_h
#include "Alignment/CommonAlignment/interface/AlignmentParameters.h"
#include "DataFormats/CLHEP/interface/AlgebraicObjects.h"
/// \class BeamSpotAlignmentParameters
///
/// Concrete class for alignment parameters and associated quantities
/// [derived from AlignmentParameters]. The number of parameters
/// N_PARAM is fixed to 4 (2 translations in x & y, and 2 slopes)
///
/// $Date: 2008/09/02 15:08:12 $
/// $Revision: 1.13 $
/// (last update by $Author: flucke $)
class Alignable;
class AlignableDetOrUnitPtr;
class TrajectoryStateOnSurface;
class BeamSpotAlignmentParameters : public AlignmentParameters {
public:
/// Give parameters a name
enum AlignmentParameterName { dx = 0, dy, dxslope, dyslope, N_PARAM };
/// Constructor with empty parameters/covariance (if calcMis = false) or with
/// parameters (no covariance) created from current (mis-)placement of
/// alignable (if calcMis = true).
BeamSpotAlignmentParameters(Alignable *alignable, bool calcMis);
/// Constructor for full set of parameters
BeamSpotAlignmentParameters(Alignable *alignable,
const AlgebraicVector ¶meters,
const AlgebraicSymMatrix &covMatrix);
/// Constructor for selection
BeamSpotAlignmentParameters(Alignable *alignable,
const AlgebraicVector ¶meters,
const AlgebraicSymMatrix &covMatrix,
const std::vector<bool> &selection);
/// Destructor
~BeamSpotAlignmentParameters() override;
void apply() override;
int type() const override;
/// Clone all parameters (for update of parameters)
BeamSpotAlignmentParameters *clone(const AlgebraicVector ¶meters,
const AlgebraicSymMatrix &covMatrix) const override;
/// Clone selected parameters (for update of parameters)
BeamSpotAlignmentParameters *cloneFromSelected(const AlgebraicVector ¶meters,
const AlgebraicSymMatrix &covMatrix) const override;
/// Get all derivatives
AlgebraicMatrix derivatives(const TrajectoryStateOnSurface &tsos, const AlignableDetOrUnitPtr &) const override;
/// Get selected derivatives
AlgebraicMatrix selectedDerivatives(const TrajectoryStateOnSurface &tsos,
const AlignableDetOrUnitPtr &) const override;
/// Get translation parameters
AlgebraicVector translation(void) const;
/// Get rotation parameters
AlgebraicVector rotation(void) const;
/// calculate and return parameters in global frame
AlgebraicVector globalParameters(void) const;
/// print parameters to screen
void print(void) const;
/// Calculate parameter vector of misplacements (shift+rotation) from
/// alignable. (If ali=0, return empty AlgebraicVector of proper length.)
static AlgebraicVector displacementFromAlignable(const Alignable *ali);
};
#endif
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