ZIGGZAGGXYWITHSIGMA_NAME< PointType, PointContainerType > Class Template Reference

checks whether chain of segments are zigg-zagging (changing sign of curvature of neighbouring segments) in the X-Y-plane, returns number of charge-signs found (if != 1, then the given hitContainer is ziggZagging). More...

#include <ZiggZaggXYWithSigma.h>

Inheritance diagram for ZIGGZAGGXYWITHSIGMA_NAME< PointType, PointContainerType >:

Collaboration diagram for ZIGGZAGGXYWITHSIGMA_NAME< PointType, PointContainerType >:

Public Types
typedef int	variableType
	Type of the returned object. More...
typedef PointContainerType	argumentType
	Type of the argument object. More...
typedef FunctionOf< Nargs, variableType, const argumentType & >::functionType	functionType
	Type of the function returning the value. More...

Public Member Functions
	PUT_NAME_FUNCTION (ZIGGZAGGXYWITHSIGMA_NAME)
	is replaced by "static const std:string name(void)" frunction which returns name of the Class

Static Public Member Functions
static int	value (const PointContainerType &hitContainer)
	checks whether chain of segments are zigg-zagging (changing sign of curvature of neighbouring segments) in the X-Y-plane, returns number of charge-signs found (if != 1, then the given hitContainer is ziggZagging). More...
static variableType	value (const PointContainerType &arg1, const PointContainerType &arg2)
	Static method that return the variable associated to: More...

Static Public Attributes
static const size_t	c_Nargs
	Number of arguments.

Detailed Description

template<typename PointType, typename PointContainerType>
class Belle2::ZIGGZAGGXYWITHSIGMA_NAME< PointType, PointContainerType >

checks whether chain of segments are zigg-zagging (changing sign of curvature of neighbouring segments) in the X-Y-plane, returns number of charge-signs found (if != 1, then the given hitContainer is ziggZagging).

This functions uses the sigma to consider also approximately straight tracks as not zigg-zagging.

ATTENTION: in contrast to the Two- Three- and FourHit-filters, the TrackletFilters do NOT expect Hits, but a Container with pointers to Hits (e.g. Vector of hits or a SpacePointTrackCandidate, These filters therefore apply to arbitrary numbers of hits in that container.

Definition at line 30 of file ZiggZaggXYWithSigma.h.

Member Typedef Documentation

argumentType

typedef PointContainerType argumentType

inherited

Type of the argument object.

Needed for SFINAE in Filter.hh

Definition at line 84 of file SelectionVariable.h.

functionType

typedef FunctionOf<Nargs, variableType, const argumentType&>::functionType functionType

inherited

Type of the function returning the value.

Needed for the automated training

Definition at line 88 of file SelectionVariable.h.

variableType

typedef int variableType

inherited

Type of the returned object.

Needed for SFINAE in Filter.hh

Definition at line 81 of file SelectionVariable.h.

Member Function Documentation

value() [1/2]

static variableType value ( const templateArgumentType &  arg1, const templateArgumentType &  arg2  )

inlinestaticinherited

Static method that return the variable associated to:

Parameters

arg1	first object of the pair
arg2	second object of the pair

N.B. this method must be static.

value() [2/2]

static int value ( const PointContainerType &  hitContainer )

inlinestatic

checks whether chain of segments are zigg-zagging (changing sign of curvature of neighbouring segments) in the X-Y-plane, returns number of charge-signs found (if != 1, then the given hitContainer is ziggZagging).

This functions uses the sigma to consider also approximately straight tracks as not zigg-zagging

Definition at line 37 of file ZiggZaggXYWithSigma.h.

    {
      if (hitContainer.size() < 4) return 1;
 
 
      std::vector<int> chargeSigns;
      chargeSigns.reserve(hitContainer.size() - 2);
 
      auto iterPos = hitContainer.begin();
      auto stopPos = hitContainer.end() - 2;
 
      for (; iterPos < stopPos; ++iterPos) {
        int signVal = SignCurvatureXYError<PointType>::value(**iterPos, **(iterPos + 1), **(iterPos + 2));
        chargeSigns.push_back(signVal);
      }
 
      std::sort(chargeSigns.begin(), chargeSigns.end());
      auto endAfterRemove = std::remove(chargeSigns.begin(), chargeSigns.end(), 0);
      auto finalEnd = std::unique(chargeSigns.begin(), endAfterRemove);
 
      return std::distance(chargeSigns.begin(), finalEnd);
    } // return unit: none

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

• tracking/trackFindingVXD/filterMap/trackletVariables/include/ZiggZaggXYWithSigma.h