MarlinKinfit  0.4.0
Public Member Functions | Protected Types | Protected Member Functions | Protected Attributes | List of all members
MassConstraint Class Reference

Implements constraint 0 = mass1 - mass2 - m. More...

#include <MassConstraint.h>

Inheritance diagram for MassConstraint:
ParticleConstraint BaseHardConstraint BaseConstraint

Public Member Functions

 MassConstraint (double mass_=0.)
 Constructor. More...
 
virtual ~MassConstraint ()
 Virtual destructor.
 
virtual double getValue () const
 Returns the value of the constraint.
 
virtual void getDerivatives (int idim, double der[]) const
 Get first order derivatives. More...
 
virtual double getMass (int flag=1)
 Get the actual invariant mass of the fit objects with a given flag. More...
 
virtual void setMass (double mass_)
 Sets the target mass of the constraint. More...
 
virtual int getVarBasis () const
 
- Public Member Functions inherited from ParticleConstraint
 ParticleConstraint ()
 Creates an empty ParticleConstraint object.
 
virtual ~ParticleConstraint ()
 Virtual destructor.
 
virtual void setFOList (std::vector< ParticleFitObject * > *fitobjects_)
 Adds several ParticleFitObject objects to the list. More...
 
virtual void addToFOList (ParticleFitObject &fitobject, int flag=1)
 Adds one ParticleFitObject objects to the list.
 
virtual void resetFOList ()
 Resests ParticleFitObject list.
 
virtual void invalidateCache () const
 Invalidates any cached values for the next event.
 
- Public Member Functions inherited from BaseHardConstraint
virtual ~BaseHardConstraint ()
 Virtual destructor.
 
virtual void add1stDerivativesToMatrix (double *M, int idim) const
 Adds first order derivatives to global covariance matrix M. More...
 
virtual void add2ndDerivativesToMatrix (double *M, int idim, double lambda) const
 Adds second order derivatives to global covariance matrix M. More...
 
virtual void addToGlobalChi2DerVector (double *y, int idim, double lambda) const
 Add lambda times derivatives of chi squared to global derivative vector. More...
 
virtual double dirDer (double *p, double *w, int idim, double mu=1)
 Calculate directional derivative. More...
 
virtual double dirDerAbs (double *p, double *w, int idim, double mu=1)
 Calculate directional derivative for abs(c) More...
 
virtual double getError () const
 Returns the error on the value of the constraint.
 
virtual int getGlobalNum () const
 Accesses position of constraint in global constraint list.
 
virtual void setGlobalNum (int iglobal)
 Sets position of constraint in global constraint list. More...
 
virtual void printFirstDerivatives () const
 
virtual void printSecondDerivatives () const
 
virtual void test1stDerivatives ()
 
virtual void test2ndDerivatives ()
 
virtual double num1stDerivative (int ifo, int ilocal, double eps)
 Evaluates numerically the 1st derivative w.r.t. a parameter. More...
 
virtual double num2ndDerivative (int ifo1, int ilocal1, double eps1, int ifo2, int ilocal2, double eps2)
 Evaluates numerically the 2nd derivative w.r.t. 2 parameters. More...
 
- Public Member Functions inherited from BaseConstraint
 BaseConstraint ()
 Creates an empty BaseConstraint object.
 
 BaseConstraint (const BaseConstraint &rhs)
 Copy constructor. More...
 
BaseConstraintoperator= (const BaseConstraint &rhs)
 Assignment. More...
 
virtual ~BaseConstraint ()
 Virtual destructor.
 
virtual const char * getName () const
 Returns the name of the constraint.
 
virtual void setName (const char *name_)
 Set object's name.
 
virtual std::ostream & print (std::ostream &os) const
 print object to ostream More...
 

Protected Types

enum  { VAR_BASIS =0 }
 
- Protected Types inherited from BaseHardConstraint
typedef std::vector
< BaseFitObject * > 
FitObjectContainer
 Vector of pointers to ParticleFitObjects.
 
typedef
FitObjectContainer::iterator 
FitObjectIterator
 Iterator through vector of pointers to ParticleFitObjects.
 
typedef
FitObjectContainer::const_iterator 
ConstFitObjectIterator
 Constant iterator through vector of pointers to ParticleFitObjects.
 

Protected Member Functions

virtual bool secondDerivatives (int i, int j, double *derivatives) const
 Second derivatives with respect to the 4-vectors of Fit objects i and j; result false if all derivatives are zero. More...
 
virtual bool firstDerivatives (int i, double *derivatives) const
 First derivatives with respect to the 4-vector of Fit objects i; result false if all derivatives are zero. More...
 

Protected Attributes

double mass
 The mass difference between object sets 1 and 2.
 
- Protected Attributes inherited from BaseHardConstraint
FitObjectContainer fitobjects
 The FitObjectContainer.
 
std::vector< double > derivatives
 The derivatives.
 
std::vector< int > flags
 The flags can be used to divide the FitObjectContainer into several subsets used for example to implement an equal mass constraint (see MassConstraint). More...
 
int globalNum
 Position of constraint in global constraint list.
 
- Protected Attributes inherited from BaseConstraint
char * name
 

Additional Inherited Members

Detailed Description

Implements constraint 0 = mass1 - mass2 - m.

This class implements different mass constraints:

Author: Jenny List, Benno List Last update:

Date:
2008/02/12 11:03:32

by:

Author:
blist

Constructor & Destructor Documentation

MassConstraint::MassConstraint ( double  mass_ = 0.)

Constructor.

Parameters
mass_The mass difference between object sets 1 and 2

Member Function Documentation

bool MassConstraint::firstDerivatives ( int  i,
double *  derivatives 
) const
protectedvirtual

First derivatives with respect to the 4-vector of Fit objects i; result false if all derivatives are zero.

Parameters
inumber of 1st FitObject
derivativesThe result 4-vector

Implements BaseHardConstraint.

References BaseHardConstraint::fitobjects, BaseHardConstraint::flags, ParticleFitObject::getE(), ParticleFitObject::getPx(), ParticleFitObject::getPy(), and ParticleFitObject::getPz().

void MassConstraint::getDerivatives ( int  idim,
double  der[] 
) const
virtual

Get first order derivatives.

Call this with a predefined array "der" with the necessary number of entries!

Parameters
idimFirst dimension of the array
derArray of derivatives, at least idim x idim

Implements BaseHardConstraint.

References BaseHardConstraint::fitobjects, BaseHardConstraint::flags, ParticleFitObject::getDE(), ParticleFitObject::getDPx(), ParticleFitObject::getDPy(), ParticleFitObject::getDPz(), ParticleFitObject::getE(), BaseFitObject::getName(), ParticleFitObject::getPx(), ParticleFitObject::getPy(), and ParticleFitObject::getPz().

double MassConstraint::getMass ( int  flag = 1)
virtual

Get the actual invariant mass of the fit objects with a given flag.

Parameters
flagThe flag

References BaseHardConstraint::fitobjects, BaseHardConstraint::flags, ParticleFitObject::getE(), ParticleFitObject::getPx(), ParticleFitObject::getPy(), and ParticleFitObject::getPz().

bool MassConstraint::secondDerivatives ( int  i,
int  j,
double *  derivatives 
) const
protectedvirtual

Second derivatives with respect to the 4-vectors of Fit objects i and j; result false if all derivatives are zero.

Parameters
inumber of 1st FitObject
jnumber of 2nd FitObject
derivativesThe result 4x4 matrix

Implements BaseHardConstraint.

References BaseHardConstraint::fitobjects, BaseHardConstraint::flags, ParticleFitObject::getE(), ParticleFitObject::getPx(), ParticleFitObject::getPy(), and ParticleFitObject::getPz().

void MassConstraint::setMass ( double  mass_)
virtual

Sets the target mass of the constraint.

Parameters
mass_The new mass

References mass.


The documentation for this class was generated from the following files: