BasicMultiVertexState Class Reference

#include <BasicMultiVertexState.h>

Inheritance diagram for BasicMultiVertexState:

Public Member Functions
	BasicMultiVertexState ()
	BasicMultiVertexState (const std::vector< VertexState > &vsComp)
virtual BasicMultiVertexState *	clone () const
virtual std::vector< VertexState >	components () const
GlobalError	error () const
bool	isValid () const
GlobalPoint	position () const
GlobalWeight	weight () const
double	weightInMixture () const
AlgebraicVector3	weightTimesPosition () const
Public Member Functions inherited from BasicVertexState
virtual	~BasicVertexState ()

Private Member Functions
void	checkCombinedState () const

Private Attributes
VertexState	theCombinedState
bool	theCombinedStateUp2Date
MultiVertexStateCombiner	theCombiner
std::vector< VertexState >	theComponents
bool	valid

Additional Inherited Members
Public Types inherited from BasicVertexState
typedef ProxyBase < BasicVertexState, CopyUsingClone < BasicVertexState > >	Proxy
typedef ReferenceCountingPointer < BasicVertexState >	RCPtr

Detailed Description

Multi state measurement of a vertex. Some data is calculated on demand to improve performance.

Definition at line 12 of file BasicMultiVertexState.h.

Constructor & Destructor Documentation

BasicMultiVertexState::BasicMultiVertexState ( )

inline

Constructors

Definition at line 18 of file BasicMultiVertexState.h.

Referenced by clone().

: valid(false){}

BasicMultiVertexState::BasicMultiVertexState

(

const std::vector< VertexState > &

vsComp

)

Definition at line 7 of file BasicMultiVertexState.cc.

                                                         :
  valid(true), theComponents(vsComp), theCombinedStateUp2Date( false) {}

Member Function Documentation

void BasicMultiVertexState::checkCombinedState ( ) const

private

Definition at line 61 of file BasicMultiVertexState.cc.

References MultiVertexStateCombiner::combine(), theCombinedState, theCombinedStateUp2Date, theCombiner, theComponents, and valid.

Referenced by error(), position(), weight(), and weightTimesPosition().

{
  if (!valid) throw VertexException("BasicSingleVertexState::invalid");
  if (theCombinedStateUp2Date) return;

  theCombinedState = theCombiner.combine(theComponents);
  theCombinedStateUp2Date = true;
}

virtual BasicMultiVertexState* BasicMultiVertexState::clone ( void  ) const

inlinevirtual

Access methods

Implements BasicVertexState.

Definition at line 24 of file BasicMultiVertexState.h.

References BasicMultiVertexState().

  {
    return new BasicMultiVertexState(*this);
  }

virtual std::vector<VertexState> BasicMultiVertexState::components ( ) const

inlinevirtual

Vector of individual components in the mixture.

Reimplemented from BasicVertexState.

Definition at line 60 of file BasicMultiVertexState.h.

References theComponents.

                                                    {
    return theComponents;
  }

GlobalError BasicMultiVertexState::error ( ) const

virtual

Mean covariance matrix of the mixture (covariance matrix of the collapsed state)

Implements BasicVertexState.

Definition at line 18 of file BasicMultiVertexState.cc.

References checkCombinedState(), VertexState::error(), and theCombinedState.

{
  checkCombinedState();
  return theCombinedState.error();
}

bool BasicMultiVertexState::isValid ( void  ) const

inlinevirtual

The validity of the vertex

Implements BasicVertexState.

Definition at line 67 of file BasicMultiVertexState.h.

References valid.

{return valid;}

GlobalPoint BasicMultiVertexState::position ( ) const

virtual

Mean position of the mixture (position of the collapsed state)

Implements BasicVertexState.

Definition at line 11 of file BasicMultiVertexState.cc.

References checkCombinedState(), VertexState::position(), and theCombinedState.

{
  checkCombinedState();
  return theCombinedState.position();
}

GlobalWeight BasicMultiVertexState::weight ( void  ) const

virtual

Mean weight matrix (inverse of covariance) of the mixture ( weight matrix of the collapsed state)

Implements BasicVertexState.

Definition at line 25 of file BasicMultiVertexState.cc.

References checkCombinedState(), theCombinedState, and VertexState::weight().

Referenced by weightInMixture().

{
  checkCombinedState();
  return theCombinedState.weight();
}

double BasicMultiVertexState::weightInMixture ( ) const

virtual

The weight of this state. It will be the sum of the weights of the individual components in the mixture.

Implements BasicVertexState.

Definition at line 45 of file BasicMultiVertexState.cc.

References gather_cfg::cout, theComponents, valid, and weight().

                                                    {
  if (!valid) throw VertexException("BasicSingleVertexState::invalid");
  if (theComponents.empty()) {
    cout << "Asking for weight of empty MultiVertexState, returning zero!" << endl;
    throw VertexException("Asking for weight of empty MultiVertexState, returning zero!");
    return 0.;
  }

  double weight = 0.;
  for (vector<VertexState>::const_iterator it = theComponents.begin(); 
    it != theComponents.end(); it++) {
    weight += it->weightInMixture();
  }
  return weight;
}

AlgebraicVector3 BasicMultiVertexState::weightTimesPosition ( ) const

virtual

Mean (weight*position) matrix of the mixture

Implements BasicVertexState.

Definition at line 32 of file BasicMultiVertexState.cc.

References checkCombinedState(), theCombinedState, and VertexState::weightTimesPosition().

{
  checkCombinedState();
  return theCombinedState.weightTimesPosition();
}

Member Data Documentation

VertexState BasicMultiVertexState::theCombinedState

mutableprivate

Definition at line 75 of file BasicMultiVertexState.h.

Referenced by checkCombinedState(), error(), position(), weight(), and weightTimesPosition().

bool BasicMultiVertexState::theCombinedStateUp2Date

mutableprivate

Definition at line 76 of file BasicMultiVertexState.h.

Referenced by checkCombinedState().

MultiVertexStateCombiner BasicMultiVertexState::theCombiner

private

Definition at line 78 of file BasicMultiVertexState.h.

Referenced by checkCombinedState().

std::vector<VertexState> BasicMultiVertexState::theComponents

mutableprivate

Definition at line 74 of file BasicMultiVertexState.h.

Referenced by checkCombinedState(), components(), and weightInMixture().

bool BasicMultiVertexState::valid

private

Definition at line 73 of file BasicMultiVertexState.h.

Referenced by checkCombinedState(), isValid(), and weightInMixture().