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#ifndef Alignment_TwoBodyDecay_TwoBodyDecayVirtualMeasurement_h
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#define Alignment_TwoBodyDecay_TwoBodyDecayVirtualMeasurement_h
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#include "DataFormats/CLHEP/interface/AlgebraicObjects.h"
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#include "DataFormats/GeometryCommonDetAlgo/interface/GlobalError.h"
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#include "DataFormats/Math/interface/Point3D.h"
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//#include "DataFormats/GeometryVector/interface/GlobalPoint.h"
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#include "DataFormats/BeamSpot/interface/BeamSpot.h"
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/** /class TwoBodyDecayVirtualMeasurement
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*
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* Container-class for the virtual measurements (beam profile, mass-constraint) included
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* into the estimation of the properties of two-body decays (see TwoBodyDecayEstimator).
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*
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* /author Edmund Widl
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*/
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class TwoBodyDecayVirtualMeasurement
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{
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public:
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TwoBodyDecayVirtualMeasurement( const double primaryMass,
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const double primaryWidth,
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const double secondaryMass,
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const reco::BeamSpot& beamSpot ) :
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thePrimaryMass( primaryMass ),
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thePrimaryWidth( primaryWidth ),
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theSecondaryMass( secondaryMass ),
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theBeamSpot( beamSpot ) {}
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TwoBodyDecayVirtualMeasurement( const TwoBodyDecayVirtualMeasurement & other ) :
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thePrimaryMass( other.thePrimaryMass ),
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thePrimaryWidth( other.thePrimaryWidth ),
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theSecondaryMass( other.theSecondaryMass ),
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theBeamSpot( other.theBeamSpot ) {}
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inline const double & primaryMass( void ) const { return thePrimaryMass; }
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inline const double & primaryWidth( void ) const { return thePrimaryWidth; }
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inline const double & secondaryMass( void ) const { return theSecondaryMass; }
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inline const reco::BeamSpot & beamSpot( void ) const { return theBeamSpot; }
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inline const AlgebraicVector beamSpotPosition( void ) const { return convertXYZPoint( theBeamSpot.position() ); }
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inline const AlgebraicSymMatrix beamSpotError( void ) const { return extractBeamSpotError(); }
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private:
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inline const AlgebraicVector convertXYZPoint( const math::XYZPoint & p ) const
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{ AlgebraicVector v(3); v(1)=p.x(); v(2)=p.y(); v(3)=p.z(); return v; }
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inline const AlgebraicSymMatrix extractBeamSpotError() const
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{ AlgebraicSymMatrix bse(3,0); bse[0][0] = theBeamSpot.BeamWidthX(); bse[1][1] = theBeamSpot.BeamWidthY(); bse[2][2] = theBeamSpot.sigmaZ(); return bse; }
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const double & thePrimaryMass;
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const double & thePrimaryWidth;
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const double & theSecondaryMass;
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const reco::BeamSpot & theBeamSpot;
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};
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#endif
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